JP5662099B2 - Solid-liquid separator - Google Patents

Description

  The present invention relates to a solid-liquid separator that separates a solid-liquid mixture in which a solid and a liquid are mixed into a solid and a liquid.

  2. Description of the Related Art A solid-liquid separation device that separates a solid-liquid mixture into a solid and a liquid is known (see, for example, Patent Document 1). The solid-liquid separation device of Patent Document 1 includes a cylindrical rotating body, a recess provided on the outer peripheral surface of the rotating body, and an opening of the recess provided in the recess and corresponding to the outer peripheral surface of the rotating body. A pressing body that can move between the bottom surface of the recess and the recess, a housing formed between the pressing body and the opening of the recess, and a rotating body that rotatably accommodates a solid and liquid mixture. A casing having a dehydrating plate with a dehydrating hole connected to an inlet portion and an outlet portion of the liquid mixture, one end of the inlet portion, and one end of the outlet portion and covering the outer peripheral surface of the rotating body within a predetermined angle range; The solid-liquid mixture put in the housing portion is pressed in the direction of the dehydration plate by the pusher, so that the liquid in the solid-liquid mixture is dehydrated from the dehydration hole, and the solid and liquid And are separated.

JP 2007-152322 A

  In the above-described solid-liquid separation device, the solid-liquid mixture charged into the container is pressed in the direction of the dehydrating plate by the pusher, and the solid-liquid mixture is pressed against the dehydrating plate. Since the rotation of the rotating body is hindered, it is necessary to use a motor with a large capacity for rotating the rotating body as the motor as the rotation drive source, and there are problems such as high cost of the apparatus and large size of the apparatus.

A solid-liquid separation device according to the present invention includes a cylindrical rotating body, a rotation drive control mechanism for the rotating body, a recess provided on the outer peripheral surface of the rotating body so as to be recessed from the outer peripheral surface, and a rotary body provided in the recess. A pusher that can move between the opening of the recess and the bottom surface of the recess at a position corresponding to the outer peripheral surface of the recess, a housing formed between the pusher and the opening of the recess, and a rotating body With dehydration holes that can be accommodated and connected to the inlet and outlet of the solid-liquid mixture in which solid and liquid are mixed, one end of the inlet, and one end of the outlet to cover the outer peripheral surface of the rotating body in a predetermined angle range A rotary drive control mechanism, the rotation drive control mechanism is a claw wheel provided on the rotation center axis of the rotating body so as to be rotatable together with the rotation center axis. and a rotational force imparting mechanism that imparts rotational force in one direction to the ratchet wheel in contact with the teeth of the ratchet wheel As a rotational force imparting mechanism, a pair of hydraulic jacks are used vertically and horizontally, and the rotating body is pressed by simultaneously pressing the teeth of each ratchet wheel in contact with each piston that performs linear motion of each hydraulic jack with each piston. Since it is rotated in one direction, a large rotational torque for rotating the rotating body with a small force can be obtained, and the solid-liquid separator can be miniaturized.
A set of two hydraulic jacks is arranged so that the expansion and contraction direction of the piston and the tangent of the circle in contact with the circumferential surface of the disc of the claw wheel are parallel to each other, and when the piston extends to the maximum, Since the pistons are positioned parallel to each other and the tip positions of the pistons are positioned on a straight line passing through the center of rotation of the claw wheel on the circumferential surface of the claw wheel disc , A large rotational torque for rotating the rotating body can be obtained, and the solid-liquid separation device can be miniaturized.
The rotational force imparting mechanism includes a claw, a hinge that rotatably supports the claw in a direction approaching the rotation center of the claw wheel, and a claw that urges the claw wheel in a direction approaching the rotation center of the claw wheel to Since the urging means that engages between the teeth adjacent to each other is provided, the claw can be reliably engaged between the teeth by the hinge and the urging means, and the urging means Thus, the engaged state can be reliably maintained, and the rotating body can be reliably rotated.

The longitudinal cross-sectional view of a solid-liquid separator (Embodiment 1). 1 is an exploded perspective view of a solid-liquid separator (Embodiment 1). FIG. The perspective view which shows the internal structure of the rotary body of a solid-liquid separator (Embodiment 1). The enlarged view of the spin-drying | dehydration part and accommodating part of a solid-liquid separator (Embodiment 1). The figure which shows the rotational drive control mechanism of a solid-liquid separator (Embodiment 1). The perspective view which shows a solid-liquid separator from the rotation drive control mechanism side (Embodiment 1). The table | surface (Embodiment 1) which shows the operation | movement relationship of the hydraulic jack as a rotational force provision mechanism of a solid-liquid separator, a claw wheel, and a pushing body. Operation | movement explanatory drawing of a rotational drive control mechanism (Embodiment 1).

  As shown in FIG. 1, the solid-liquid separation device according to the first embodiment includes a cylindrical rotating body 1, a recess 36 provided on the outer peripheral surface of the rotating body, a pressing body 44 provided in the recess, An accommodating portion 51 that accommodates a solid-liquid mixture such as food, a casing 2 that rotatably accommodates the rotating body 1, a pressing drive control mechanism 99 of the pressing body 44, and the rotating shaft 10 of the rotating body 1 are rotated. And a rotational drive control mechanism 3 for the purpose.

  The rotating body 1 includes a rotating shaft 10 and a rotating drum unit 11. The rotating drum unit 11 includes a cylindrical part 12 and a circular closing plate 13. The rotating drum portion 11 has a configuration in which openings at both ends of the cylindrical portion 12 are closed by the blocking plates 13; 13 by connecting both ends of the cylindrical portion 12 and the closing plates 13; 13 (FIG. 2). reference). The rotating shaft 10 passes through the cylinder center of the cylinder part 12 and the circular centers of the closing plates 13; 13 at both ends of the cylinder part 12, and is non-rotatably connected to the closing plates 13; 13 (see FIG. 2). As a result, the rotational force of the rotary shaft 10 that is rotated by the power of the rotational drive control mechanism 3 is transmitted to the cylindrical portion 12 via the closing plates 13 and 13. That is, the rotating body 1 in which the rotating shaft 10 and the rotating drum portion 11 rotate together is formed.

  The cylinder portion 12 includes an inner wall portion 15 and a partition wall body 16. The inner wall portion 15 is formed in a cylindrical shape having a substantially regular octagonal cross section. The partition wall body 16 is formed of a bar having a fan-like cross section. In the partition wall body 16, a bar extends along a direction in which the cylinder of the inner wall 15 extends (hereinafter referred to as “cylinder length direction”) at a position corresponding to a substantially regular octagonal corner 17 on the outer periphery of the inner wall 15. To be provided. That is, the eight partition wall bodies 16 are arranged at an angle of 45 ° from each other in the direction along the outer periphery of the inner wall portion 15 (hereinafter referred to as “circumferential direction”), and each partition wall The body 16 is provided so as to extend along the cylinder length direction of the inner wall portion 15.

  The inner wall portion 15 is formed in a cylindrical shape having a substantially regular octagonal cross section by connecting both ends of the eight flat plates 21 and the capping plates 13; 13 corresponding to the two ends with a set screw (not shown) (see FIG. 2). A gap 25 is provided between the flat plate 21 and the flat plate 21. In the gap 25, both ends of the partition wall body 16 and the blocks corresponding to both ends are inserted with the fan base portion 27 sandwiched between the two inclined surfaces 26; 26 of the partition wall body 16 having a sectional fan shape. The plates 13 and 13 are connected to each other by a set screw (not shown), whereby an inner wall portion 15 formed of a cylindrical body having a substantially regular octagonal cross section with the rotation center of the rotary shaft 10 as the center of the tube, and the inner wall portion 15 In this circumferential direction, a cylindrical portion 12 is formed which is composed of eight partition wall bodies 16 disposed on the outer periphery of the inner wall portion 15 at an angle of 45 ° to each other. The outer surface 31 of the flat plate 21 forming one side of the substantially regular octagonal cross section of the inner wall portion 15 and the slopes 26 and 26 of the partition wall body 16 disposed on both sides of the flat plate 21 are perpendicular to each other.

  That is, the inclined surfaces 26; 26 of the two partition walls 16 disposed on both sides of the flat plate 21 are parallel to each other, and the inclined surfaces 26; 26 and the outer surface 31 of the flat plate 21 form a right angle. The outer surface 33 of the partition wall body 16 of the cylindrical portion 12 is positioned on the outer peripheral surface of the cylindrical portion 12, that is, the outer peripheral surface 32 of the rotating body 1. A concave portion 36 is defined by the parallel and opposed surfaces 26 and 26 of the partition wall bodies 16 and 16 located on both sides of the flat plate 21 and the inner surfaces 34 and 34 of the closing plate 13 and 13. That is, the rotating body 1 includes eight concave portions 36 provided on the outer peripheral surface 32 of the rotating body 1 so as to be recessed from the outer peripheral surface 32. The eight recesses 36 are rectangular recesses extending along the cylinder length direction of the rotating body 1, and are provided intermittently at equal intervals in the circumferential direction of the rotating body 1. The outer peripheral surface 32 of the rotating body 1 is a virtual surface that connects the outer surface 33 and the outer surface 33 of the partition wall body 16 so as to block the opening 35 of the concave portion 36 (= the opening 35 of the accommodating portion 51). It is formed by the arc surface and the outer surface 33 of the partition wall body 16.

  A pressing mechanism 41 is attached to the flat plate 21. The pressing mechanism 41 includes, for example, a hydraulic jack provided with a cylinder 42, a piston 43, and a pressing body 44. A mounting flange 41 a is provided around one end of the cylinder 42. In the flat plate 21, cylinder installation holes 37 penetrating the flat plate 21 are formed at three positions with a predetermined interval along the extending direction of the tube of the tube portion 12 (see FIG. 3). The cylinder 42 is passed through the cylinder installation hole 37 from the other end of the cylinder 42 inwardly from the outside of the cylindrical portion 12 to contact the mounting flange 41a and the outer surface 31 of the flat plate 21, and these are fixed to each other with screws not shown. The A pusher 44 is attached to the tip of the piston 43. The pressing body 44 is in contact with the parallel facing surfaces 26 and 26 of the partition wall bodies 16 and 16 located on both sides of the flat plate 21 and the inner surface 34 and 34 of the closing plate 13; It is sized to be closed from the outside. That is, the push body 44 is formed of a plate material having a surface that matches the area of the outer surface 31 of the flat plate 21, and a peripheral surface 47 that contacts the four inner wall surfaces (surface 26; 26, inner surface 34; 34) of the recess 36. Is provided. That is, since the inner wall surface of the recess 36 that forms the accommodating portion 51 described later is formed by a surface parallel to the moving direction of the push body 44, the push body 44 is parallel to the inner wall surface of the recess 36. What is necessary is just to use the thing provided with the surrounding surface 47 which can move in the state which mutually contacted, and the accommodating part 51 of the sealed state can be formed with the push body 44 of simple structure like a board | plate material. The curvature of the outer surface 46 of the pressing body 44 is formed to have the same curvature as that of the outer peripheral surface 32 of the rotating body 1. A seal groove 48 that goes around the peripheral surface 47 is formed on the peripheral surface 47 of the push body 44, and a seal material 49 is provided in the seal groove 48 (see FIG. 4). The pressing body 44 can move on a radial line connecting the rotation center of the rotating shaft 10 and the outer peripheral surface 32 of the rotating body 1 by hydraulic drive by the pressing mechanism 41. That is, the push body 44 moves in the recess 36 between the opening 35 of the recess 36 at a position corresponding to the outer peripheral surface 32 of the rotating body 1 and the bottom surface of the recess 36 formed by the outer surface 31 of the flat plate 21. Is possible. Since the pressing body 44 accommodated in the one accommodating portion 51 is configured to be driven by the three pressing mechanisms 41, the small pressing mechanism 41 can be used, the apparatus can be downsized, and the pressing body 44 can be made smooth. It is possible to move to.

  The partition wall 16 that faces the outer surface 46 of the pusher 44; the parallel surface 26; the closing plate 13 that faces the outer wall 26; the space surrounded by the inner surface 34; 51 is formed. That is, the accommodating part 51 is formed between the push body 44 and the opening part 35 of the recessed part 36. The rotator 1 includes eight rectangular accommodating portions 51 that extend along the cylinder length direction on the outer peripheral surface 32 of the rotator 1 at regular intervals in the circumferential direction of the rotator 1. The accommodating portion 51 has a shape that extends in a direction along the extending direction of the cylinder of the rotating body 1 and extends along the outer peripheral surface 32 of the rotating body 1, and the length along the outer peripheral surface 32 is an extension of the cylinder. Shorter than the length along the direction. For this reason, a plurality of accommodating portions 51 can be provided in the direction along the outer peripheral surface 32 of the rotating body 1, and the accommodating capacity of each accommodating portion 51 can be increased.

  The cylinder 42 of the pressing mechanism 41 and the oil tank 52 are connected to each other via the oil feeding cables 53; 54; 55 and the hydraulic control valve 56 (see FIG. 2). In FIGS. 1 and 2, the oil supply cables 53; 54; 55 and the hydraulic control valve 56 are illustrated as a single oil supply system and oil discharge system. The rotary shaft 10 is provided with a cable relay 57 called a rotary joint, an internal oil feed cable 53 connected to the cylinder 42 and the cable relay 57 are connected, and an external connected to the hydraulic control valve 56. The oil supply cable 54 and the hydraulic control valve 56 are connected, and the tank-side oil supply cable 55 connected to the tank and the hydraulic control valve 56 are connected. By using the cable relay 57, the oil feeding cable 53; 54 is connected so as not to be twisted by the rotation of the rotary shaft 10, and the cylinder 42 and the hydraulic pressure are connected by the oil feeding cable 53; 54 and the cable relay 57. An oil feed path that connects the control valve 56 to each other is formed. That is, since the pusher 44 is formed to be movable by the hydraulically driven push mechanism 41, the pusher 44 can be moved smoothly and can be easily controlled.

  The casing 2 includes a front connecting part 61, a rear wall part 62, and a trunk wall part 63. The trunk wall part 63 includes a front wall part 64, a rear connection part 65, an inlet part 66, a dewatering part 67, an outlet part 68, and a standby part 69 (see FIG. 2). The width T in the circumferential direction of the rotating body 1 in each of the accommodating portions 51 is the same. The width T is smaller than the widths of the inlet hole 66a of the inlet portion 66, the dewatering portion 67, the outlet hole 68a of the outlet portion 68, and the standby portion 69 along the circumferential direction of the rotating body 1. The dehydrating unit 67 includes a dehydrating plate 71 and an outer plate 72. The dewatering plate 71 is disposed along the outer peripheral surface 32 of the rotating body 1. The dehydrating plate 71 is formed to have a size that covers the openings 35 of the plurality of accommodating portions 51 formed along the outer peripheral surface 32 of the rotating body 1. For example, as shown in FIG. 1, the dehydrating plate 71 is formed in a cross-sectional arc shape in an angle range that covers the five accommodating portions 51, extends along the cylinder length direction of the rotating body 1, and the outer peripheral surface of the rotating body 1 32 is covered in the above angle range. The dehydrating plate 71 is formed with dehydrating holes 73 through which the liquid of the solid-liquid mixture passes from the outer peripheral surface 32 side of the rotating body 1 to the outer plate 72 side. That is, the dewatering plate 71 is formed by a perforated plate such as punching metal (see FIG. 4). The dewatering hole 73 is formed so as to gradually increase in diameter from the inner surface 71a side to the outer surface 71b side of the dewatering plate 71. For example, the inner surface 71a has a diameter of 2 mm and the outer surface 71b has a diameter of 3 mm. Similar to the dewatering plate 71, the outer plate 72 is formed in a cross-sectional arc shape in an angular range that covers the five accommodating portions 51, and extends along the direction in which the cylinder of the rotating body 1 extends. Although it is a plate that covers the surface 32 within the above-mentioned angle range, the diameter is larger than that of the dewatering plate 71 because it is disposed outside the dewatering plate 71 so as to face the outer surface 71 b of the dewatering plate 71. The dewatering plate 71 and the outer plate 72 are connected to each other by a column 74 and a set screw (not shown). A drainage space 77 is formed by a space surrounded by the dewatering plate 71 and the outer plate 72. The other end of the dewatering plate 71 and the other end of the outer plate 72 are connected to each other by the sealing plate 70, and one end of the dehydrating plate 71 and one end of the outer plate 72 are connected to each other by the sealing plate 60. The front connecting portion 61 is connected to the front end opening 77a, and the rear connecting portion 65 is connected to the rear end opening 77b of the drainage space 77, whereby the dewatering plate 71, the outer plate 72, and the inner surface 75 of the front connecting portion 61 ( A drainage space 77 surrounded by a sealed state is formed by the inner surface 76 (see FIG. 2) of the rear connecting portion 65 and the sealing plate 60; The sealing plate 60 is a plate that separates the drainage space 77 and the inlet portion 66, and the sealing plate 70 is a plate that separates the drainage space 77 and the outlet portion 68. A drain hole 78 is formed in the outer plate 72 below the drain space 77, and a drain pipe 79 is connected to the drain hole 78. A drainage pump 80 is connected to the drainage pipe 79, and water discharged into the drainage space 77 is sucked by the drainage pump 80 and sent to a water storage unit (not shown). That is, since the plurality of accommodating portions 51 are provided at predetermined intervals in the direction along the outer periphery of the rotating body 1 and the dehydrating plate 71 is formed to have a size that covers the openings 35 of the plural accommodating portions 51, The dewatering section can be lengthened, and continuous dehydration processing with a long dehydration time is possible. Moreover, since the drain hole 78 connected to the drainage space 77 is provided in the outer plate 72, drainage treatment can be performed efficiently.

  The inlet 66 is connected to one end 81 of the dewatering unit 67. The outlet portion 68 is connected to the other end portion 82 of the dewatering portion 67. The width length a of the portion along the circumferential direction of the rotating body 1 in the outlet hole 68a of the outlet portion 68 is such that all of the openings 35 in one storage portion 51 correspond to the outlet hole 68a. The opening 35 in the other accommodating part 51 is set to a length that does not correspond to the outlet hole 68a. Specifically, the length of the width along the circumferential direction of the rotating body 1 in the opening 35 of the accommodating portion 51 is T, and the outer surface 33 of the partition wall body 16 constituting the outer peripheral surface 32 of the rotating body 1 When the length of the width of the portion along the circumferential direction of the rotating body 1 is b, T <a <(T + b) is set. By setting in this way, the portion other than the outlet portion 68, in particular, the range of the dewatering portion 67 can be lengthened, so that dewatering can be performed efficiently.

  The standby unit 69 is connected to the other end 83 of the inlet 66 and the other end 84 of the outlet 68, and separates the inlet 66 and the outlet 68. The outlet portion inner surface 85 that forms the boundary between the standby portion 69 and the outlet portion 68 forms a residual solid scraping portion that scrapes off the solid adhering to the outer surface 46 of the pusher 44 that passes through the outlet portion 68. Therefore, since the solid adhering to the outer surface 46 of the push body 44 is scraped off by the residual solid scraping portion before the accommodating portion 51 that has passed through the outlet portion 68 reaches the inlet portion 66, the accommodating portion that reaches the inlet portion 66. Since the solid-liquid mixture for the fixed quantity determined each time can be accommodated in 51, processing efficiency can be improved.

  As shown in FIG. 2, the front wall portion 64 and the rear wall portion 62 are provided with bearings 90; 91 that rotatably support the rotary shaft 10. Both ends of the rotating shaft 10 of the rotating body 1 are rotatably supported by a bearing 90 on the front wall portion 64 and a bearing 91 on the rear wall portion. The inner surface 76 of the rear wall portion 62 and the rear connection portion 65 of the casing 2 are connected by a set screw (not shown), and the inner surface 75 of the front connection portion 61 and the outer surface 64a of the front wall portion 64 are connected by a set screw (not shown). The dewatering portion 67 is connected to the inner surface 76 of the rear wall portion 62 and the inner surface 75 of the front connecting portion 61 by a set screw (not shown), so that the rotating body 1 is rotatably accommodated and surrounds the rotating body 1. 2 is assembled.

The hydraulic control device 96 and the hydraulic control valve 56 are connected to each other by a control signal line 98.
The pressing drive control mechanism 99 includes a hydraulic control device 96, an oil tank 52, an oil feeding cable 53; 54; 54, a hydraulic control mechanism including the hydraulic control valve 56, and the pressing mechanism 41.

As shown in FIG. 5, the rotation drive control mechanism 3 includes a ratchet 301, a rotational force applying mechanism 302, and a hydraulic control mechanism 303.
The claw wheel 301 includes a plurality of teeth 305 provided on the peripheral surface 307 of the disk 304 at regular intervals along the circumferential direction, and includes a mounting hole 306 at the center of the disk 304. For example, the one end portion 10a of the rotating shaft 10 protruding from the rear wall portion 62 is fitted into the attachment hole 306 of the claw wheel 301 so that the claw wheel 301 can rotate together with the rotating shaft 10. The rotary shaft 10 is fixed so as not to rotate.
A stopper 308 is attached to the other end portion 10b of the rotating shaft 10 protruding from the front wall portion 64 to prevent the rotating shaft 10 from coming off from the bearing 90 (see FIG. 2).
As described above, when the hook wheel 301 is rotated, the rotating shaft 10 and the rotating body 1 that are rotatably supported by the bearings 90 and 91 are also rotated together.

The rotational force applying mechanism 302 includes a hydraulic jack having a cylinder 310 and a piston 311. As the hydraulic jack, for example, the upper hydraulic jack 302A that presses the teeth 305 of the claw wheel 301 that comes to the upper side of the casing 2 in the claw wheel 301, and the claw wheel 301 that comes to the lower side of the casing 2 in the claw wheel 301. And a lower hydraulic jack 302B that presses. If the upper and lower hydraulic jacks 302A and 302B are used in this way, the ratchet wheel 301 can be smoothly rotated in one direction.
In addition, if a set of two hydraulic jacks is used vertically or horizontally, the ratchet wheel 301 can be smoothly rotated in one direction. For example, in a set of two hydraulic jacks, when the piston 311 extends to the maximum (see FIG. 5), the pistons 311 are positioned parallel to each other, and the tip positions of the pistons 311 are claw wheels. On the peripheral surface 307 of the disc 304 of 301, it is provided so that it may be located on the straight line which passes along the rotation center of the ratchet wheel 301.
The hydraulic jacks 302 </ b> A and 302 </ b> B are arranged so that the expansion / contraction direction of the piston 311 (extension direction of the central axis of the piston) and the tangent of the circle in contact with the circumferential surface 307 of the disk 304 are parallel. It is attached to the base frame 313 so that it can rotate in the direction approaching the claw wheel 301 and in the direction away from the claw wheel 301. With this base frame 313, the solid-liquid separator can be stably installed on the installation surface.

The hinge 312 supports the claw 318 so that the claw 318 approaches the rotation center of the claw wheel 301 and the claw 318 so as to rotate away from the rotation center of the claw wheel 301. The cylinder 310 is rotatably attached to the base frame 313 around a pin 314 attached to the base frame 313 so as to face the same direction.
In addition, a coil spring 315 is provided as a biasing means for biasing the piston 311 in a direction approaching the rotation center of the claw wheel 301. The coil spring 315 has one end connected to the cylinder 310 and the other end connected to the stationary part of the solid-liquid separator. That is, the other end of the coil spring 315 is connected to a stationary part such as the outer surface 62a of the other rear wall part 62 or the base frame 313 as shown in FIG.

The piston 311 includes a piston shaft 316 and a pressing cap 317 having a diameter larger than the shaft diameter of the piston shaft 316.
The pressing cap 317 has a bottomed hole (not shown) centered on the central axis of the rod-shaped body and is formed from one end surface to the other end surface of the rod-shaped body, and the tip end side of the piston shaft 316 is fitted into the bottomed hole. It is fixed to the tip of the piston shaft 316.
The front end of the pressing cap 317 has a claw 318 that protrudes in a direction approaching the claw wheel 301 and enters the valley between the adjacent teeth 305 of the claw wheel 301 and presses the teeth 305. The front end surface of the pressing cap 317 in the claw 318 functions as the pressing surface 320, and the front end surface in the protruding direction of the claw 318 functions as the sliding surface 321.

  The teeth 305 of the claw wheel 301 include a pressure receiving surface 325 and a smooth surface 326. The pressure receiving surface 325 rises from the peripheral surface 307 of the disk 304 and is formed to be a surface parallel to the pressing surface 320 when the piston 311 is fully extended, for example. The pressure receiving surface 325 is formed by, for example, a slope having an angle smaller than 90 ° with the peripheral surface 307 and an angle close to a right angle. The smooth surface 326 is a surface continuous with the pressure receiving surface 325, and a gentle slope connecting the surface edge of the protruding tip side 328 of the pressure receiving surface 325 and the peripheral surface 307 of the disk 304 (the peripheral surface 307 rather than the pressure receiving surface 325). And the slope formed by a slanted angle). That is, the plurality of teeth 305 of the ratchet wheel 301 have a pressure receiving surface 325 rising from the peripheral surface 307 and a smooth surface 326 falling from the surface edge of the protruding tip side 328 of the pressure receiving surface 325 toward the peripheral surface 307. It is formed by being repeatedly provided at predetermined intervals along the peripheral surface 307. For example, about 8 to 12 are provided on the peripheral surface 307 of the disc 304. The teeth 305 are formed such that the direction in which the smooth surface 326 rises from the peripheral surface 307 toward the pressure receiving surface 325 and the rotation direction of the ratchet wheel 301 are opposite to each other.

  The protrusion length of the claw 318 of the pressing cap 317 in the piston 311 is such that when the piston 311 extends and pushes one tooth 305, the tooth 305 immediately after the rotation direction of the claw wheel 301 is the circumferential surface of the pressing cap 317. It is determined so that the contact between the pressing surface 320 of the piston 311 and the pressure receiving surface 325 of the tooth 305 is released by contacting the 329 and the rotational force is not transmitted to the ratchet wheel 301. That is, the piston 311 is configured such that the piston 311 does not hit the tooth 305 immediately after the piston 311 extends.

The hydraulic control mechanism 303 connects the oil tank 330, the cylinder 310, and the oil tank 330, and supplies and discharges an oil that serves as an oil supply path from the oil tank 330 to the cylinder 310 and an oil return path from the cylinder 310 to the oil tank 330. A hydraulic control valve 332 provided in the oil supply path and the oil return path of the oil supply / discharge cable 331, and a hydraulic control device 333 that controls the hydraulic control valve 332, respectively. The hydraulic control device 333 and the hydraulic control valve 332 are connected to each other by a control signal line 334.
A hydraulic supply / discharge mechanism including an oil tank 330; an oil supply / discharge cable 331; a hydraulic control valve 332 is provided for each of the upper hydraulic jack 302A and the lower hydraulic jack 302B, and the upper hydraulic jack 302A. And the hydraulic control device 333 that controls the lower hydraulic jack 302B in an integrated manner, for example, allows the piston 311 of the upper and lower hydraulic jacks 302A; 302B to simultaneously extend and retract (see FIG. 8), or The extension operations of the pistons 311 of the upper and lower hydraulic jacks 302A; 302B are alternately performed. When the extending operation and the retracting operation of the piston 311 of the upper and lower hydraulic jacks 302A and 302B are performed at the same time, the force for rotating the claw wheel 301 is increased, and the claw wheel 301 is easily rotated. When the extension operation of the piston 311 of the upper and lower hydraulic jacks 302A; 302B is alternately performed, compared with the case where the extension operation and the contraction operation of the piston 311 of the upper and lower hydraulic jacks 302A; Can be rotated more continuously, and the working time until the solid in the accommodating part 51 is discharged | emitted from the exit part 68 can be shortened.

In this application, since the friction force between the dehydrating plate 71 and the solid-liquid mixture is large and the claw wheel 301 is difficult to rotate in the reverse direction, a reverse rotation prevention claw (not shown) that prevents the claw wheel 301 from rotating in the reverse direction is provided. It may or may not be provided.
In the case of the upper rotational force applying mechanism 302, when the piston 311 is contracted and the sliding surface 321 of the piston exceeds the smooth surface 326, the rotational force applying mechanism 302 rotates downward about the hinge 312 by gravity. Since the claw 318 falls on the peripheral surface 307 behind the tooth 305 immediately after, the coil spring 315 may or may not be provided.

The operation of the solid-liquid separator will be described. For example, for example, twelve teeth 305 of the claw wheel 301 are provided along the peripheral surface 307 of the disc 304 at a predetermined interval, and the upper and lower hydraulic jacks 302A; pistons 311; Each time the teeth 305 and 305 are pressed once each in a linear motion parallel to the tangential line of the circle 304 in contact with the peripheral surface 307, that is, the operation until the piston 311 changes from the maximum retracted state to the maximum extended state (hereinafter referred to as the piston). A case where the rotating body 1 rotates by 45 ° every time (referred to as 311 one-stroke operation) will be described.
As shown in FIG. 1, the piston 43 of the push body 44 is set in a fully retracted state in the housing portion 51 in a state where the housing portion 51 is positioned so as to receive the solid-liquid mixture introduced through the inlet portion 66. The solid-liquid mixture is accommodated, and the pressing surface 320 of the piston 311 of the hydraulic jack 302A; 302B is brought into contact with the pressure receiving surface 325 side of the tooth 305 of the claw wheel 301 as shown in FIG. Then, as shown in FIG. 8B, the piston 311 of the hydraulic jack 302A; 302B is operated by one stroke to press the teeth 305 of the ratchet wheel 301, so that as shown in FIG. The rotating body 1 is rotated by 45 ° so that the pressing body 44 and the dewatering plate 71 face each other. When the accommodating portion 51 that accommodates the solid-liquid mixture first rotates the rotating body 1 from the position corresponding to the inlet portion 66, the piston 43 of the pusher 44 is set in the maximum retracted state. Thereby, the friction between the solid-liquid mixture and the dehydrating plate 71 during the rotation of the rotating body 1 can be reduced.
After the rotating body 1 is rotated by 45 °, the piston 43 of the pusher 44 is extended, and the pusher 44 pushes the solid-liquid mixture in the accommodating portion 51 in the direction of the dehydration plate 71 to perform dehydration work. That is, the hydraulic control device 96 controls the hydraulic control valve 56 so as to start supplying hydraulic pressure to the cylinder 42 of the pressing mechanism 41, so that the pressing body 44 provided at the distal end of the pressing body 44 of the pressing mechanism 41 is rotated. The solid-liquid mixture is pressed in the direction of the dehydration plate 71 by the pusher 44, and the water in the solid-liquid mixture is discharged into the drainage space 77 through the dehydration holes 73.
After performing such dehydration work for a predetermined time (for example, several seconds or several tens of seconds), as shown in FIG. 8C, when the piston 311 of the hydraulic jack 302A; 302B is retracted, the claw 318 of the piston 311 The sliding surface 321 slides on the smooth surface 326 and the claw 318 is positioned after the tooth 305 immediately after the rotation direction of the claw wheel 301. That is, when the piston 311 is contracted and the sliding surface 321 of the piston 311 exceeds the sliding surface 326, the hydraulic jacks 302A; 302B rotate downward about the hinge 312 and the pawl 318 is behind the immediately following tooth 305. In contact with the peripheral surface 307. When the piston 311 of the hydraulic jacks 302A; 302B is retracted, if the operation of moving the pusher 44 in the direction of the outer peripheral surface 32 of the rotating body 1 is continued or stopped, the solid-liquid mixture and the dehydrating plate 71 The frictional force can be increased, and the rotating body 1 can be prevented from rotating in the reverse direction. In the case where the above-described reverse rotation preventing claw is provided, when the piston 311 of the hydraulic jack 302A; 302B is retracted, the piston 43 of the push body 44 may be retracted.
Then, after the claw 318 is positioned behind the immediately following tooth 305 (rear with respect to the rotation direction of the rotating body 1) and the dehydrating operation by the pusher 44 is set in a stopped state, the piston 311 of the hydraulic jack 302A; 302B is moved. The rotary body 1 is further rotated by 45 ° by operating for one stroke. Thereafter, when the rotating body 1 is rotated by operating the piston 311 of the hydraulic jacks 302A; 302B for one stroke, the rotating body 1 is rotated after the dehydrating operation by the push body 44 is set to the stop state.
Here, setting the dehydrating operation by the pusher 44 to the stopped state means an operation of pushing the solid-liquid mixture in the housing portion 51 toward the dehydrating plate 71 by the pusher 44, that is, the pusher 44 is moved to the rotating body 1. The operation of moving in the direction of the outer peripheral surface 32 is set to a stopped state, or the piston 43 of the pusher 44 is retracted, that is, the pusher 44 is moved in the direction of the outer peripheral surface 32 of the rotating body 1. This means that the pressing body 44 is further moved in a direction approaching the bottom surface of the recess 36 (the outer surface 31 of the flat plate 21) from the state where the operation is stopped.
And after rotating the rotary body 1, the dehydrating operation by the push body 44 is performed.
That is, as shown in FIG. 7, when the piston 311 of the hydraulic jack 302A; 302B is operated for one stroke, the rotary body 1 rotates as shown in FIG. At this time, the dehydrating operation by the pusher 44 is stopped. Further, when the dehydrating operation by the push body 44 is performed, the driving of the hydraulic jacks 302A; 302B is stopped, and the rotating body 1 is not rotated. That is, the operation of performing the dehydrating operation without rotating the rotating body 1 after rotating the rotating body 1 by operating the piston 311 for one stroke is repeated.

Thereafter, similarly, the operation of rotating the rotating body 1 and the dehydrating operation are repeated, and when the accommodating part 51 reaches the outlet part 68, the solid after the dehydration is discharged from the outlet part 68.
In this way, the operation of rotating the rotating body 1 and the dehydration operation are performed separately while shifting the time, whereby the dehydration operation for a predetermined time is performed a plurality of times. That is, in the section where the dehydrating plate 71 exists, the solid-liquid mixture can be sufficiently dehydrated by performing the dehydrating operation for a predetermined time when the rotating body 1 is not rotating, and dewatering is performed during the rotating operation of the rotating body 1. Since no operation is performed, the friction between the solid-liquid mixture and the dewatering plate 71 can be reduced. That is, while the rotating body 1 is rotating, in order to reduce the friction between the solid-liquid mixture and the dehydrating plate 71, the dehydrating operation by the push body 44 is stopped, and the dehydrating operation is performed when the rotating body 1 is stopped. Therefore, the rotating body 1 can be easily rotated and the wear of the dewatering plate 71 due to friction can be reduced.

  As shown in FIG. 1, when the pusher 44 that has completed the dehydrating operation reaches the outlet 68, the control device 96 controls the hydraulic control valve 56 to extend the piston 43 of the push mechanism 41 to the maximum extent. Then, the push body 44 is moved until the outer surface 46 of the push body 44 comes to the position of the outer peripheral surface 32 of the rotating body 1. When the pusher 44 reaches the standby unit 69, the control device 96 controls the hydraulic control valve 56 to contract the piston 43 of the push mechanism 41 so that the pusher 44 is moved to the bottom surface of the recess 36 (the flat plate 21. Control is performed so as to begin to lower in the direction of the outer surface 31). Thereby, the accommodating part 51 is formed, and the solid-liquid mixture from the inlet part 66 is accommodated in the accommodating part 51. Each pressing mechanism 41 is individually controlled as described above.

In the first embodiment, a claw wheel 301 provided on the rotation center axis of the rotating body 1 with the rotation center axis as a rotation center so as to be rotatable together with the rotation center axis, and a tooth wheel 301 in contact with the teeth 305 of the claw wheel 301. Are provided with two hydraulic jacks 302A: 302B that apply a rotational force in one direction to the teeth 305 of the claw wheel 301 directly by the claws 318 of the piston 311 that performs linear motion by the hydraulic pressure of the hydraulic jacks 302A: 302B. Therefore, a large rotational torque for rotating the rotating body 1 with a small force can be obtained. Therefore, the solid-liquid separator can be miniaturized without using a large capacity motor to obtain a large rotational torque for rotating the rotating body 1.
Further, since the dehydrating operation by the pusher 44 is stopped while the rotating body 1 is rotating, the wear of the dewatering plate 71 due to the friction between the solid-liquid mixture and the dehydrating plate 71 during the rotation of the rotating body 1 can be reduced. The dehydration performance of the solid-liquid separator can be maintained well.

  In addition, when the rotating body 1 is rotated after stopping the dehydrating operation by the pressing body 44 by stopping the operation of moving the pressing body 44 in the direction of the outer peripheral surface 32 of the rotating body 1, The friction between the solid-liquid mixture and the dehydrating plate 71 during rotation can be reduced, and the drive control of the pusher 44 can be simplified.

  The dehydrating operation by the push body 44 is performed by setting the push body 44 in a state in which the push body 44 is moved in a direction approaching the bottom surface of the recess 36 from a state in which the operation of moving the push body 44 in the direction of the outer peripheral surface of the rotating body 1 is stopped. When the rotating body 1 is rotated after stopping, the friction between the solid-liquid mixture and the dehydrating plate 71 during the rotation of the rotating body 1 can be further reduced.

  Further, the rotational force applying mechanism 302 urges the claw 318, the hinge 312 that rotatably supports the claw 318 in a direction approaching the rotation center of the claw wheel 301, and the claw 318 in a direction approaching the rotation center of the claw wheel 301. Since the coil spring 315 as an urging means to be engaged between the teeth 305 adjacent to each other on the peripheral surface 307 of the claw wheel 301 is provided, the claw 318 is moved to the teeth 305 by the hinge 312 and the coil spring 315. And the teeth 305 can be reliably engaged with each other, and the engagement state can be reliably maintained by the coil spring 315, so that the rotating body 1 can be reliably rotated.

In the first embodiment, the cylindrical rotating body 1, the concave portion 36 provided in the outer peripheral surface 32 of the rotating body 1 so as to be recessed from the outer peripheral surface 32, and the outer peripheral surface 32 of the rotary body 1 provided in the concave portion 36. Between the opening 35 of the recess 36 and the bottom surface of the recess 36 (the outer surface 31 of the flat plate 21), and between the pressing body 44 and the opening 35 of the recess 36. The housing portion 51 formed, the casing 2 in which the rotating body 1 is rotatably accommodated, and a pressing drive control mechanism 99 for the pressing body 44 are provided. The casing 2 is an inlet of a solid-liquid mixture in which solid and liquid are mixed. A portion 66, an outlet portion 68, and a dehydrating portion 67 that is connected to one end of the inlet portion 66 and one end of the outlet portion 68 and covers the outer peripheral surface 32 of the rotating body 1 in a predetermined angle range. A dehydrating plate 71 disposed along the outer peripheral surface 32 of the rotating body 1 is provided, and dehydrating 71 is provided with a dehydration hole 73, and the accommodating portion 51 located at the inlet portion 66 has reached the position corresponding to the dehydrating plate 71 as the rotating body 1 rotates after accommodating the solid-liquid mixture from the inlet portion 66. In this case, the push drive control mechanism 99 moves the pusher 44 in the direction of the dehydrating plate 71, whereby the liquid in the solid-liquid mixture is discharged to the outer surface side of the dehydrating plate 71 through the dehydrating hole 73 of the dehydrating plate 71. When the accommodating part 51 that has passed through the dehydrating part 67 reaches the outlet part 68 with the rotation of the rotating body 1, the pressing drive control mechanism 99 moves the pressing body 44 in the direction of the outer peripheral surface 32 of the rotating body 1. By doing so, when the solid in the container 51 is pushed by the pusher 44 and discharged from the outlet 68, the container 51 that has passed through the outlet 68 with the rotation of the rotating body 1 reaches the inlet 66. In addition, the solid liquid from the inlet portion 66 enters the housing portion 51. And a configuration in which compound is contained. That is, the solid-liquid mixture is accommodated in the accommodating portion 51 provided on the outer peripheral surface 32 of the rotating body 1, and the solid-liquid mixture accommodated in the accommodating portion 51 is rotated along the outer peripheral surface 32 of the rotating body 1. Since the solid-liquid mixture is dehydrated by pushing it with the pusher 44 in the direction of the dewatering plate 71 arranged in a row, it is necessary to provide a long cylinder to press the solid-liquid mixture or to transport the solid-liquid mixture. The device can be reduced in size.
In the first embodiment, a plurality of storage portions 51 are provided at predetermined intervals in a direction along the outer periphery of the rotating body 1, and a dehydrating plate 71 having a size that covers the openings 35 of the plurality of storage portions 51. Since the solid-liquid mixture is continuously accommodated in the plurality of accommodating portions 51 as the rotating body 1 rotates, the solid-liquid mixture accommodated in the plurality of accommodating portions 51 can be continuously dehydrated. That is, the dehydration process can be performed efficiently.

  As the urging means, a weight for urging the claw 318 in a direction approaching the rotation center of the claw wheel 301 may be used. Further, the position of the hinge 312 may be set so that the hydraulic jacks 302 </ b> A and 302 </ b> B rotate with their own weight and the claw 318 is biased in a direction approaching the rotation center of the claw wheel 301.

Embodiment 2
In the first embodiment, the dehydrating operation is not performed while the rotating body 1 is rotating. However, when the pusher 44 is in a position facing the dehydrating plate 71, the rotating body 1 is rotating and stopped. In either case, the dehydration operation may be performed continuously.
According to the second embodiment, since it is not necessary to repeatedly perform the dehydrating operation and the dehydration stopping operation of the pusher 44, the pusher 44 can be easily controlled.
In addition, while the pusher 44 and the dehydrating plate 71 are facing each other, the dehydrating operation is continuously performed while the rotating body 1 is continuously rotated, so that the dehydrating effect is excellent.

One hydraulic jack may be used.
The number of the accommodating parts 51 provided in the outer peripheral surface 32 of the rotary body 1 should just be one or more. In this case, the plurality of accommodating portions 51 are arranged at intervals of (360 / n) ° around the rotation shaft 10. In addition, n is the number of the accommodating parts 51 of 2 or more.
Instead of the hydraulically driven pressing mechanism 41, a hydraulically driven or pneumatically driven pressing mechanism or a pressing mechanism using a cam and a spring may be used.
Further, the accommodating portion that becomes wider as it approaches the outer peripheral surface 32 from the rotating shaft 10 side of the rotating body 1, that is, the wall surface of the partition wall body that partitions the accommodating portion is formed in a plane parallel to the radial line of the rotating body, It is also possible to use an accommodating portion having a wall surface diverging, and a pusher whose width is variable by a spring mechanism or the like.

As the rotational force imparting mechanism 302, for example, a mechanism provided with an advancing / retreating rod configured to be movable in parallel with a tangent of a circle in contact with the circumferential surface 307 of the disk 304 by a rack and pinion mechanism may be used.
A ratchet 301 and a rotational force applying mechanism 302 may be provided on the outer surface 64 a of the front wall portion 64.

  The relationship between the number a of the teeth of the claw wheel and the number b of the accommodating portions is not particularly limited. That is, a = b or a> b or a <b.

  In the first embodiment, the dehydrating operation is performed every time the piston 311 of the hydraulic jack changes from the maximum retracted state to the maximum extended state, that is, every time the hook wheel 301 rotates by a certain angle by operating the piston 311 of the hydraulic jack for one stroke. Although an example of performing is shown, a dehydrating operation is performed each time a plurality of stroke operations (for example, about 2 to 3 times) by the piston 311 of the hydraulic jack are completed, or during a one-stroke operation of the piston 311 of the hydraulic jack. The dehydration operation may be performed intermittently.

  According to the solid-liquid separation device of the present invention, for example, a solid-liquid mixture such as shield excavated sediment, food waste, dredged soil, dam sediment, sewage sediment, sediment, sludge and the like can be dehydrated.

1 rotating body, 2 casing, 3 rotation drive control mechanism, 32 outer peripheral surface of rotating body,
35 opening part of accommodating part, 36 recessed part, 41 pressing mechanism, 44 push body, 51 accommodating part,
66 inlet part, 67 dewatering part, 68 outlet part, 71 dehydrating plate, 72 outer plate,
73 dewatering hole, 78 drainage hole, 99 drive control mechanism,
301 Claw wheel, 302 rotational force applying mechanism, 302A; 302B hydraulic jack,
312 Hinge, 315 Coil spring (biasing means).

Claims (3)

A cylindrical rotating body, a rotation drive control mechanism for the rotating body, a recess provided in the outer peripheral surface of the rotating body so as to be recessed from the outer peripheral surface, and a position provided in the concave portion and corresponding to the outer peripheral surface of the rotary body A push body movable between the opening of the recess and the bottom surface of the recess; a housing formed between the push body and the opening of the recess; and a rotating body that rotatably accommodates the solid and liquid A casing having a dehydrating plate with dehydrating holes connected to an inlet portion, an outlet portion, one end of the inlet portion, and one end of the outlet portion, and covering the outer peripheral surface of the rotating body in a predetermined angle range; With
The rotation drive control mechanism includes a claw wheel provided on the rotation center axis of the rotating body so as to be rotatable with the rotation center axis as a rotation center and a tooth of the claw wheel to contact with the claw wheel. A rotational force applying mechanism for applying a rotational force in the direction ,
As a rotational force imparting mechanism, a set of two hydraulic jacks on the top and bottom or left and right,
A solid-liquid separator characterized in that a rotating body is rotated in one direction by simultaneously pressing the teeth of each claw wheel contacting each piston performing linear movement of each hydraulic jack with each piston . A set of two hydraulic jacks is arranged so that the expansion and contraction direction of the piston and the tangent of the circle in contact with the circumferential surface of the disc of the claw wheel are parallel to each other, and when the piston extends to the maximum, The pistons are located parallel to each other, and the tip positions of the pistons are provided so as to be located on a straight line passing through the rotation center of the claw wheel on the circumferential surface of the claw wheel disc. The solid-liquid separator according to claim 1.   The rotational force imparting mechanism includes a claw, a hinge that rotatably supports the claw in a direction approaching the rotation center of the claw wheel, and a claw that urges the claw wheel in a direction approaching the rotation center of the claw wheel to The solid-liquid separator according to claim 1, further comprising an urging unit that engages between teeth adjacent to each other.

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