JP6132408B2 - Free-supporting spiral pump - Google Patents

Description

  The present invention relates to an Archimedes pump for transferring a liquid by rotating a spirally installed tube, and more particularly to a free-supporting helical pump with less restrictions on the installation location.

  Conventionally, as a means for pumping water from a river or an irrigation canal, a water wheel or a powered pump is used. However, since the head of a water turbine is determined by the diameter (the height at which water is pumped up), the head cannot be increased in a place where a large water turbine cannot be installed. In addition to the high manufacturing cost, there is a problem that installation and movement are not easy. On the other hand, in the case of a pump with power, there is a problem that the installation location is limited in addition to an increase in manufacturing cost and running cost because it is necessary to increase the size of the pump if the head is increased.

In order to solve such a problem, for example, Patent Document 1 discloses an invention relating to an Archimedes pump in which a spiral plate is integrally provided in a cylindrical body under the name “pumping device”.
The invention disclosed in Patent Document 1 is a conventional Archimedes pump in which an impeller is attached to one of rotating shafts protruding outward from both ends of a spiral plate, and the rotating shaft is rotatably supported by a support. It has become.
According to such a structure, when the impeller is disposed in water, the rotating shaft rotates together with the impeller that rotates in response to the water flow, so that the spiral plate also rotates, and as a result, water is pumped up along the pipeline. It has the action. In other words, the present invention has a structure in which the spiral plate is rotated using the water flow, so that the running cost can be reduced.

Patent Document 2 discloses an invention relating to a pump using the rotational force of a windmill under the name “windmill and irrigation pump”.
The invention disclosed in Patent Document 2 is a structure in which a windmill having a plurality of wind receiving blades is attached to the upper end of a rotating shaft of a screw blade, and water is pumped up by the rotational force of the windmill. Unlike the above, fuel costs and electricity costs are not charged, so running costs can be reduced.

Japanese Patent Application Laid-Open No. 07-269489 Japanese Unexamined Patent Publication No. 01-208574

  In the invention described in Patent Document 1 which is the above-described prior art, it is difficult to install in a deep lake or the like because a mechanism for rotating the spiral plate needs to be installed in water. That is, there is a problem that there are many restrictions on the installation location. Further, since the structure is complicated, there is a problem that transportation and installation are not easy and the manufacturing cost is high. Furthermore, there is a problem that the degree of freedom in design with respect to the length of the body portion is small and the versatility is poor.

  In the invention disclosed in Patent Document 2, a windmill is attached to the upper end of the rotating shaft of the screw blade, and there is a problem that it cannot be manufactured at low cost because it has a complicated and large structure. In addition, there is a problem that the installation location is limited. Furthermore, since the length of the pumping cylinder which contains a screw blade cannot be changed freely, it is poor in versatility.

  The present invention has been made in response to such a conventional situation, and is a free-supporting spiral pump that has few restrictions on the installation location, can be easily changed in overall length, and can be manufactured at low cost. The purpose is to provide.

  In order to achieve the above object, a free-supporting spiral pump according to a first aspect of the present invention includes a plurality of first annular disks arranged concentrically at predetermined intervals, and the first annular disks A plurality of rod-shaped bodies that are connected to each other, a tube that is spirally wound to form a water channel, and a fixture that is attached to the first annular disk or rod-shaped body. Is arranged at a predetermined interval with respect to the circumferential direction of the first annular disk so as to be orthogonal to the first annular disk and to surround the tube. Together with a cylindrical frame, the tube is fixed to the frame, and is installed inside the first annular disc so that the central axis of the helix is parallel to the cylindrical axis of the frame. It is supported by a fixture so that it can rotate around a cylindrical axis. The one in which the features.

In the present invention, “the central axis of the spiral is parallel to the cylindrical axis of the frame” means a state including the case where “the central axis of the spiral is substantially parallel to the cylindrical axis of the frame”. .
The free-supporting spiral pump having the above structure has an effect that the tube is held while being held in a spiral shape by the frame. In addition, the lower end of the tube is placed in the water channel, and the frame is pivoted around the cylindrical axis with the frame fixed to a pedestal or the like via a fixture so that the cylindrical axis of the frame is slightly inclined from the vertical direction. If it does, water of a flowing water channel will move in a tube in connection with it. That is, the spirally wound tube functions as an Archimedes pump.

In addition, since the frame is composed of only two types of simple parts such as the first annular disk and the rod-shaped body, and the tube as well as the frame has a light-weight structure, the free-supporting spiral pump of the present invention is mounted on the frame. When fixing to a frame or the like, it is difficult for the posture of the frame to become unstable even when the fixture is attached near the center of the frame.
The frame is easy to assemble and disassemble. In particular, if disassembled, the frame is not bulky, so it is easy to carry and does not require a large space for storage.
Furthermore, in the free-supporting spiral pump according to the present invention, the flat portion of the first annular disk at the end of another frame is brought into contact with the flat portion of the first annular disk at the end of a certain frame. By fixing the two first annular disks using screws, bolts, or the like, the two frames can be easily connected.

According to a second aspect, in the first aspect, the fixing device includes an annular holding unit attached to the frame, and a supporting unit that supports the holding unit so as to be rotatable about the cylindrical axis of the frame. It is characterized by this.
In the free-supporting spiral pump having such a structure, in addition to the action of the first invention, when the holding means is rotated with respect to the supporting means in a state where the supporting means is fixed to the gantry or the like, the frame is cylindrical. It has the effect of easily rotating around the axis.

  According to a third invention, in the second invention, the holding means is a second annular disk into which the frame is inserted, and an outer peripheral surface of the rod-shaped body installed on the inner peripheral surface of the second annular disk. And a support means having a circular opening into which the frame can be inserted, and a concentric and circular shape with respect to the opening of the support plate. A plurality of first and second bearings arranged at equal intervals in the circumferential direction, and the second annular disk is installed concentrically with the opening of the support plate. And the 2nd bearing is installed in a support plate so that rotation is possible in the state where it contact | abutted with respect to the outer peripheral surface and plane of a 2nd annular disc, respectively.

In the present invention, “the first bearing and the second bearing are arranged at equal intervals in the circumferential direction with respect to the opening of the support plate” means “the first bearing and the second bearing”. Are arranged at substantially equal intervals in the circumferential direction with respect to the opening of the support plate.
In the free-supporting spiral pump having such a structure, in addition to the action of the second invention, the holder is a structure that can be attached to an arbitrary position in the longitudinal direction of the rod-shaped body. This has the effect that there are very few restrictions on the mounting location of the.

According to a fourth invention, in the third invention, the fixture is connected to an annular gear formed so that the frame can be inserted and arranged concentrically with the opening of the support plate, and a drive shaft of the motor. A sprocket that is rotatably installed in the same plane as the gear, and a roller chain wound around the sprocket and the gear. The gear is rotatably installed integrally with the second annular disk. It is characterized by that.
In the free-supporting helical pump having such a structure, in addition to the action of the third invention, when the motor is driven, the driving force is transmitted to the gear via the sprocket and the roller chain, and the second annular circle Together with the plate, the frame rotates around the cylindrical axis.

According to a fifth invention, in the first to fourth inventions, at least one of the tube and the frame is made of a synthetic resin.
In the free-supporting spiral pump having such a structure, the tube and the frame have a lighter structure, and therefore the posture of the frame is unstable even when the fixture is attached near the center of the frame when it is fixed to a frame or the like. The effect of the first invention that it is difficult to be in a state is further exhibited.

According to the first invention, the frame and the tube inclined at a desired angle can be installed in a stable state without supporting the end of the frame. Accordingly, the frame can be lengthened to support a tube longer than the conventional one. Furthermore, since it is not necessary to provide a drive mechanism for rotating the tube at the upper and lower ends of the frame as in the conventional case, in the case of the present invention, for example, a place where the drive mechanism cannot be installed in water or above the tube It can be installed in places where there are obstacles.
In addition, since it is easy to assemble, disassemble and carry, it is easy to install and remove. Furthermore, since the number of parts is small and each part has a simple shape, it can be manufactured at low cost. In addition, several types of rods with different lengths are prepared in advance, and those having an appropriate length are selected from those according to the application, and the frame can be easily assembled by appropriately combining them. It can be adjusted to the desired length. It is also possible to add several frames for use.

  According to the second invention, in addition to the effect of the first invention, there is an effect that a mechanism for rotating the frame around the cylindrical shaft can be realized at low cost.

  According to the third invention, in addition to the effect of the second invention, the fixture is attached to the frame at a desired position excluding the first annular disk, and the position is adjusted after the attachment. Therefore, there is an effect that workability at the time of installation is good. In addition, a mechanism for rotatably supporting the holding means can be realized at a low cost.

  According to the fourth invention, in addition to the effect of the third invention, there is an effect that a mechanism for rotating the holding means can be realized at low cost.

  According to the fifth invention, the effect of the first invention based on the fact that the tube and the frame have a lightweight structure is further exhibited.

It is an external appearance perspective view of the Example of the free support type spiral pump which concerns on embodiment of this invention. It is an AA arrow directional cross-sectional view in FIG. It is a BB sectional view taken on the line in FIG. It is CC sectional view taken on the line in FIG. It is DD sectional view taken on the line in FIG. (A) is a top view of the holding | maintenance means which shows the state with which the rod-shaped body was hold | maintained with the holder, (b) is the EE arrow directional cross-sectional view in the figure (a). (A) is a top view of a gear, (b) is sectional drawing of an annular disc and a gear which show the state where the gear was joined to the annular disc. (A) And (b) is the schematic diagram which showed the example of installation of the free support type | formula spiral pump of this invention.

  In this embodiment, it is described as a device that draws water from a flowing water channel or the like, but when the frame in which the tube is accommodated is rotated in the reverse direction, the present invention is also used as a device that feeds air into the water. can do.

The structure of the free-supporting spiral pump of the present invention will be specifically described with reference to FIGS.
FIG. 1 is an external perspective view of the free-supporting spiral pump of this embodiment, and FIGS. 2 and 3 are cross-sectional views taken along lines AA and BB in FIG. 1, respectively. 4 and 5 are a sectional view taken along line CC and a sectional view taken along line DD in FIG. 1, respectively. Further, FIG. 6A is a plan view of the holding means showing a state in which the rod-shaped body is held by the holder, and FIG. 6B is a cross-sectional view taken along the line EE in FIG. . On the other hand, FIG. 7 (a) is a plan view of the gear, and FIG. 7 (b) shows a state in which the gear is joined to the annular disk, corresponding to FIG. 6 (b).
6A shows a cross-sectional view of the rod-like body, and FIGS. 6B and 7B show the support plates 7 and 8, the bearings 15 and 16, the rotating shafts 15a and 16a, and the shaft fixture 17. Is indicated by a broken line.

  As shown in FIGS. 1 to 5, the free-supporting spiral pump 1 includes a plurality of annular disks 2 arranged concentrically at predetermined intervals, and arranged so as to be orthogonal to the plane portion thereof. A plurality of rod-like bodies 3 that connect the annular disks 2 to each other, a tube 4 made of a synthetic resin that is spirally wound to form a water channel, and a fixture 5 that is attached to the rod-like body 3. ing.

  The rod-like bodies 3 are arranged at substantially equal intervals in the circumferential direction of the annular disk 2 so as to surround the tube 4, and form a cylindrical frame 6 together with the annular disk 2. Further, the tube 4 is installed inside the annular disk 2 so that the center axis of the spiral is substantially parallel to the cylindrical axis of the frame 6. That is, the frame 6 is supported by the fixture 5 so as to be rotatable about the cylindrical axis. The frame 6 has a function of holding the tube 4 while maintaining a spiral shape.

  Note that the opening of the lowermost annular disk 2 forming the frame 6 is closed by a disk (not shown) so that the tube 4 does not move downward due to its own weight. However, when the tube 4 made of vinyl or rubber is used, the tube 4 has elasticity, and a force for deforming in the direction in which the inner diameter of the helix is increased acts on the inner peripheral surface of the annular disk 2, and the tube There is a high possibility that a large frictional force is generated between the outer peripheral surface of 4 and the inner peripheral surface of the annular disk 2. And the downward movement of the tube 4 may be prevented by the frictional force. In this case, it is not necessary to close the opening of the lowermost annular disk 2 forming the frame 6. Further, at least a part of the tube 4 may be fixed to the frame 6 instead of closing the opening of the annular disk.

  In this embodiment, the rod-shaped body 3 has a hollow structure in which female screw portions are formed at both ends for weight reduction. The rod-shaped body 3 is formed so as to be screwed to each female screw portion, and is connected to the other rod-shaped body 3 via a male screw member inserted through a through hole provided in the flat portion of the annular disk 2. It has the structure connected with the annular disk 2 sandwiched therebetween. In addition, the rod-shaped body 3 can also be made into the solid structure which has an external thread part and an internal thread part in both ends, respectively. In this case, the two rod-like bodies 3 are formed by screwing the other female screw portion into one male screw portion inserted through a through-hole provided in the flat portion of the annular disc 2, so that the annular disc 2 Are connected to each other with a gap in between. However, when the rod-shaped body 3 has a solid structure, it is desirable to reduce the weight by reducing the diameter.

The fixture 5 has circular openings 7a and 8a through which the frame 6 can be inserted, and is arranged in parallel at a predetermined interval so that the centers of the openings 7a and 8a are located on the same straight line. A pair of support plates 7, 8, connecting plates 9 a to 9 c for connecting the support plates 7, 8 and the rod-like body 10, and an annular circle arranged concentrically with the openings 7 a, 8 a of the support plates 7, 8 Plates 11 and 12 and a gear 13 are provided, and a connecting member 14 is attached to the connecting plate 9a. The rod-shaped body 10 has male screw portions formed at both ends, and the male screw portions are screwed into the female screw portions of the screw holes 18 provided in the support plates 7 and 8, thereby supporting the support plate 7, 8 is connected.
The support plates 7 and 8 are provided with openings 7a and 8a so as to have a substantially circular shape in plan view, and are formed so as to protrude laterally from this portion, and the end portions of the connecting plates 9a to 9c are joined to each other. Mounting portions 7d and 8d. The rod-like body 10 is disposed around the openings 7a and 8a so as to be orthogonal to the support plates 7 and 8, and both ends thereof are fixed to the inner surfaces 7b and 8b of the support plates 7 and 8, respectively.

Further, the inner surfaces 7b and 8b of the support plates 7 and 8 are arranged orthogonally to the plane portion, concentrically with the openings 7a and 8a, and at substantially equal intervals in the circumferential direction. Three bearings 15 that rotate about the rotation shaft 15a are attached, and are installed on the support plates 7 and 8 so as to be rotatable in contact with the outer peripheral surfaces of the annular disks 11 and 12, respectively. Has been. That is, the annular disks 11 and 12 are rotatably held by these three bearings 15.
On the other hand, the outer surfaces 7c and 8c of the support plates 7 and 8 are concentric with respect to the openings 7a and 8a and are arranged at substantially equal intervals in the circumferential direction and are orthogonal to the rotating shaft 15a. Three bearings 16 that rotate about the moving shaft 16a are rotatably installed in contact with the flat surfaces of the annular disks 11 and 12. The shaft fixture 17 that holds the rotating shaft 16 a of the bearing 16 is screwed to the support plates 7 and 8.

  The annular disks 11 and 12 are provided with openings 11a and 12a having an inner diameter larger than the outer diameter of the annular disk 2, and a rod-like body 3 inserted through the openings 11a and 12a on the inner peripheral surface thereof. A holding tool 19 is installed so as to surround the outer periphery. That is, the annular disks 11, 12 and 19 constitute holding means for holding the frame 6, and the support plates 7 and 8 and the bearings 15 and 16 support the holding means so as to be rotatable about the cylindrical axis of the frame 6. The supporting means is configured.

Further, the outer peripheral surface of the rod-shaped body 3 and the inner peripheral surface of the holder 19 are in close contact with each other, and a rod-like shape is formed with respect to the holding means composed of the holder 19 and the annular disks 11 and 12 by the frictional force generated between them. The body 3 is fixed so as not to slide. The annular disks 11 and 12 are restricted by the bearing 16 from moving toward the outer surfaces 7c and 8c of the support plates 7 and 8. That is, the rod-shaped body 3 is held by the holding means so as not to move in the longitudinal direction, and the holding means is supported by the support means so as not to move in the longitudinal direction of the rod-shaped body 3.
In addition, the magnitude of the frictional force generated between the outer peripheral surface of the rod-shaped body 3 and the inner peripheral surface of the holder 19 changes the inner diameter of the holder 19 with respect to the outer diameter of the rod-shaped body 3 or holds the rod-shaped body 3 and the holder. It can be easily adjusted by installing a spacer made of an elastic material between the tools 19. Moreover, you may attach to the rod-shaped body 3 the member which restrict | limits the movement of the annular discs 11 and 12 to the inner surfaces 7b and 8b side of the support plates 7 and 8 instead of adjusting the frictional force mentioned above. Or it can also be set as the structure where the bearing 16 was provided in the inner surface 7b, 8b side of the support plates 7 and 8. FIG.

A gear 13 having an opening 13a having the same inner diameter as the opening 12a is concentrically disposed on one surface of the annular disk 12 and is screwed using a screw hole 20. Thereby, the gear 13 can be rotated integrally with the annular disk 12.
An opening 8e is provided in the mounting portion 8d of the support plate 8, and the motor 21 is attached to the mounting portion 8d of the support plate 8 by the mounting plate 22 with the drive shaft 21a protruding toward the inner surface 8b through the opening 8e. The screw hole 22a is used for screwing. In the motor 21, the drive shaft 21 a is parallel to the rotation shaft 15 a, and the sprocket 23 attached to the drive shaft 21 a is rotatable in the same plane as the gear 13. A roller chain 24 is wound around the sprocket 23 and the gear 13.
Therefore, when the motor 21 is driven, the driving force is transmitted from the gear 13 to the annular disk 12 and further to the rod-shaped body 3 via the sprocket 23 and the roller chain 24, so that the frame 6 is centered on the cylindrical axis. Rotate.

FIG. 8A and FIG. 8B are schematic views showing an installation example of the free-supporting spiral pump 1.
As shown in FIG. 8A, the fixture 5 is fixed to the gantry 26 fixed to the ground 25 so that the cylindrical axis forms a predetermined inclination angle with the vertical direction and the lower end 6a is installed in the flowing water channel. When the free-supporting spiral pump 1 is fixed via the first open end 4 a, one open end 4 a of the tube 4 is disposed below the water surface 27. Therefore, when the motor 21 (see FIG. 5) is driven as described above, the tube 4 together with the frame 6 rotates around the central axis. And every time the tube 4 rotates, the water in a flowing water channel is moved in steps upwards, and is finally discharged from the other opening end 4b. That is, the tube 4 wound in a spiral shape to form a water channel exhibits a function as an Archimedes pump by being rotated around the central axis of the spiral.

As already described, in the free-supporting spiral pump 1, the frame 6 is composed of two kinds of lightweight and simple shapes of the annular disk 2 and the rod-shaped body 3. Since the tube 4 is also made of synthetic resin and is light, when the free-supporting spiral pump 1 is fixed to the mount 26, the fixture 5 is attached near the center of the frame 6 as shown in FIG. Even in this case, it is difficult for the posture of the frame 6 to become unstable. That is, the frame 6 and the tube 4 inclined at a desired angle can be installed in a stable state without supporting the end of the frame 6. Therefore, the frame 6 and the tube 4 which are longer than before can be used.
Further, in the free-supporting spiral pump 1, it is not necessary to provide a mechanism for rotating the tube 4 at the upper end and the lower end of the frame 6. Therefore, for example, the free support of the present invention can be applied to a place where a long tube 4 must be used or a place where there is an obstacle and a mechanism for rotating the tube 4 cannot be installed in the water or above the tube 4. If it is a type | formula spiral pump 1, installation is possible.

  The free-supporting spiral pump 1 is easy to assemble and disassemble the frame 6. In particular, if disassembled, the free-standing spiral pump 1 is not bulky and is easy to carry and does not require a large space for storage. That is, the free-supporting spiral pump 1 is easy to assemble, disassemble, or carry, and therefore has good workability when installing and removing. Moreover, since the number of parts is small and each part has a simple shape, it can be manufactured at low cost.

Furthermore, by preparing several types of rod-shaped bodies 3 having different lengths in advance, selecting those having an appropriate length according to the application, and combining them appropriately, the frame 6 can be easily obtained. Can be adjusted to a desired length.
Further, the flat portion of the annular disk 2 located at the end of another frame 6 is brought into contact with the flat portion of the annular disk 2 located at the end of one frame 6, and these two annular disks 2 are brought into contact with each other. Are fixed to each other using screws, bolts or the like, and the two frames 6 are connected. That is, the frame 6 can be easily added and lengthened.
Thus, in the free-supporting spiral pump 1 of the present invention, a rod 6 having a different length is used to assemble a frame 6 having a desired length, or several already-assembled frames 6 can be assembled on site. Since the total length of the frame 6 can be adjusted by adding, there are few restrictions on the installation location, and workability at the time of installation is also good.

In the present embodiment, the tube 4 is made of a synthetic resin. However, any material can be used as long as it is a member that has at least water-tightness and can be formed into a spiral shape. The frame 6 may be made of metal or synthetic resin. However, if not only the tube 4 but also the frame 6 is made of synthetic resin, the load applied to the support means is reduced. The frame 6 can be installed in a more stable state even when attached to other locations.
Furthermore, in addition to the vicinity of the center of the frame 6, it is also possible to have a structure that supports at least one end of the frame 6. In this embodiment, the fixture 5 includes the support plates 7 and 8 and the annular disks 11 and 12. However, with the above-described structure, the frame 6 can be removed even if the support plate 7 and the annular disk 11 are omitted. It is possible to support in a stable state. Note that the support plate 7 and the annular disc 11 can be omitted even when the frame 6 is not so long or when the support plate 8, the annular disc 12 and the holder 19 are sufficiently thick. Conversely, when the frame 6 is long, the frame 6 may be supported by a plurality of fixtures 5. In this case, the number of support plates and annular discs is greater than two, but the number of support plates and annular discs in the present invention is not limited to the two shown in this embodiment, and can be changed as appropriate. Is possible.

When the frame 6 is supported by the two fixtures 5, for example, as shown in FIG. 8B, one fixture 5 is installed in the opposite direction with respect to the other fixture 5, and two The fixtures 5 and 5 may be integrated through the connection member 28. However, the two sprockets 23, 23 installed in each fixture 5 are attached to both ends of one rotating shaft (not shown) driven by the motor 21 instead of being attached to the driving shaft 21 a of each motor 21. Shall be attached to each.
According to such a structure, the two annular disks 12 and 12 respectively installed on the two fixtures 5 can be rotated in a synchronized state by one motor 21.

Further, a through hole for inserting a rotation shaft to which the sprocket 23 is attached may be provided in the support plate 7 and each sprocket 23 may be connected by the rotation shaft. In this case, it is not necessary to install the two fixtures 5 and 5 in opposite directions. And even if there are three or more fixtures 5 attached to the frame 6, the above-described effects are exhibited in the same manner.
In addition, when attaching the some fixing tool 5 to the flame | frame 6, the motor 21 may each be installed in each fixing tool 5, but in that case, it is necessary to synchronize the motors 21 mutually.

  Furthermore, in this embodiment, the holder 19 is attached to the rod-shaped body 3, but the mechanism is fixed by providing the annular disks 11 and 12 with a mechanism for holding the annular disk 2 instead of the holder 19. It is good also as a structure where the tool 5 is attached to the annular disc 2. FIG. However, with the structure shown in the present embodiment, the holder 19 can be attached to an arbitrary position in the longitudinal direction of the rod-shaped body 3, so that there are extremely restrictions on the attachment position of the fixing tool 5 to the frame 6. There is a merit that there are few. The holder 19 can be slid even after being attached to the rod-shaped body 3, and the position of the rod-shaped body 3 in the longitudinal direction can be changed. That is, if it is the structure which hold | maintains the rod-shaped body 3 with the holder 19, the attachment location with respect to the flame | frame 6 of the fixing tool 5 can be adjusted easily at any time, Therefore The workability | operativity at the time of installation is good.

  Thus, the holding means for the frame 6 is not limited to the structure shown in this embodiment, and can be changed as appropriate. Also, a support means for supporting the annular disks 11 and 12 rotatably about the cylindrical shaft of the frame 6 by bearings 15 and 16 installed on the support plates 7 and 8 and a mechanism for rotating the holding means. The structure is not limited to that shown in this embodiment. For example, it is good also as a structure which provided the bearing 16 in the inner surface 7b, 8b side of the support plates 7 and 8. FIG. In addition, the driving force of the motor 21 can be directly transmitted to the rotation shafts 15a and 16a of the bearings 15 and 16 without installing the gear 13 and the roller chain 24. In the case of the structure shown in the present embodiment, a mechanism for rotatably supporting the holding means and a mechanism for rotating the frame 6 about the cylindrical axis by rotating the holding means can be realized at low cost. it can.

The invention described in claims 1 to 4 of the present invention can be used when pumping water from a flowing water channel or the like or when sending air into water.

  DESCRIPTION OF SYMBOLS 1 ... Free support type spiral pump 2 ... Circular disk 3 ... Rod-shaped body 4 ... Tube 5 ... Fixing tool 6 ... Frame 6a ... Lower end 7,8 ... Support plate 7a, 8a ... Opening part 7b, 8b ... Inner surface 7c, 8c ... External surface 7d, 8d ... Mounting portion 8e ... Opening portion 9a to 9c ... Connecting plate 10 ... Bar-shaped body 11,12 ... Annular disk 11a, 12a ... Opening portion 13 ... Gear 13a ... Opening portion 14 ... Connecting member 15 ... Bearing 15a ... Rotating shaft 16 ... Bearing 16a ... Rotating shaft 17 ... Shaft fixture 18 ... Screw hole 19 ... Holder 20 ... Screw hole 21 ... Motor 21a ... Drive shaft 22 ... Mounting plate 22a ... Screw hole 23 ... Sprocket 24 ... Roller chain 25 ... Ground 26 ... Mount 27 ... Water 28 ... Connection member

Claims (4)

A plurality of first annular disks arranged concentrically at a predetermined interval;
A plurality of rods that connect the first annular disks to each other;
A tube having water tightness and spirally wound to form a water channel;
A fixture attached to the first annular disk or the rod-shaped body,
The rod-shaped body is arranged at a predetermined interval with respect to the circumferential direction of the first annular disk so as to be orthogonal to the first annular disk and to surround the tube. Forming a cylindrical frame with the first annular disc;
The tube is fixed to the frame, and is installed inside the first annular disc so that a central axis of the spiral is parallel to a cylindrical axis of the frame.
The frame is supported by the fixture so as to be rotatable about the cylindrical shaft ,
The fixture free-supported to an annular holding means attached to said frame, support means for supporting the pivotally said holding means about said cylindrical axis of said frame, characterized in Rukoto provided with Spiral pump. The holding means is
A second annular disk in which the frame is inserted, and a holder that is installed on the inner circumferential surface of the second annular disk and holds the outer circumferential surface of the rod-shaped body,
The support means is
A support plate having a circular opening into which the frame can be inserted;
A plurality of first bearings and second bearings arranged concentrically with respect to the opening of the support plate and at equal intervals in the circumferential direction;
The second annular disc is installed concentrically with the opening of the support plate,
The first bearing and the second bearing are installed on the support plate so as to be rotatable while being in contact with the peripheral surface and the plane of the second annular disc, respectively. The free-supporting spiral pump according to claim 1 . The fixture is
An annular gear formed so that the frame can be inserted and arranged concentrically with the opening of the support plate;
A sprocket connected to the drive shaft of the motor and installed so as to be rotatable in the same plane as this gear;
This sprocket and a roller chain wound around the gear,
3. The free-supporting spiral pump according to claim 2, wherein the gear is rotatably installed integrally with the second annular disk. It said tube and said frame is freely-supported helical pump according to any one of claims 1 to 3, characterized in that at least one is made of a synthetic resin.

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