KR102710942B1 - Microbial activation stirring device for biogasification of organic waste resources - Google Patents

Abstract

The present invention relates to a microbial activation stirring device. In particular, the present invention relates to a microbial activation stirring device for biogasification of organic waste resources.
According to one embodiment of the present invention, a microbial activation stirring device crushes scum generated in an anaerobic digestion tank through a scum flow unit coupled to a shaft, moves the crushed scum to the lower center of the digestion tank, thereby increasing the contact time between scum and microorganisms, and ultimately improving the decomposition efficiency of organic matter.

Description

{MICROBIAL ACTIVATION STIRRING DEVICE FOR BIOGASIFICATION OF ORGANIC WASTE RESOURCES}

The present invention relates to a microbial activation stirring device. In particular, the present invention relates to a microbial activation stirring device for biogasification of organic waste resources.

The stirring device for anaerobic digestion of organic waste resources rotates at an appropriate rotation speed to ensure sufficient stirring of the organic waste resources inside the digestion tank with microorganisms.

In addition, the speed of the rotating body can be controlled by connecting the inverter of the reducer included in the stirring device.

Scum that occurs at the top of an anaerobic digester reduces digestion efficiency and interferes with the discharge of biogas, causing many problems in digester maintenance.

KR 10-1202444 B

A microbial activation stirring device according to one embodiment of the present invention is proposed to solve the above problems, and can improve stirring efficiency by increasing the crushing and decomposition efficiency of scum generated in an anaerobic digestion tank.

According to one embodiment, the invention provides a stirring chamber for accommodating organic waste resources and microorganisms; a shaft installed along an axial direction of the stirring chamber within the stirring chamber; a plurality of scum flow units coupled to the shaft and rotating within the stirring chamber according to rotation of the shaft; a driving module fixed to the stirring chamber and providing driving force to the shaft; And a stirring blade coupled to the shaft, and configured to rotate within the stirring chamber according to the rotation of the shaft, and configured to enable upper and lower flow of organic waste resources and microorganisms stored in the stirring chamber, wherein the plurality of scum flow units include a first scum flow unit disposed on the shaft and a second scum flow unit disposed on the shaft and positioned below the first scum flow unit, wherein the first scum flow unit includes a first scum flow screw, and the second scum flow unit includes a second scum flow screw, wherein the first scum flow screw and the second scum flow screw have screw pitches formed in opposite directions, respectively, in a microorganism-activating stirring device can be provided.

In addition, the first scum flow unit may include: the first scum flow screw; a scum flow tube accommodating the first scum flow screw; a scum inlet formed in the scum flow tube; and a scum crushing blade disposed in the scum flow tube.

In addition, the scum crushing blade may include a scum horizontal crushing blade extending radially from an outer surface of the scum flow pipe; and a scum vertical crushing blade coupled to the scum horizontal crushing blade and arranged parallel to an outer surface of the scum flow pipe along a longitudinal direction of the scum flow pipe.

In addition, the above-described vertical crushing blade may include a first vertical crushing blade facing the above-described scum flow pipe; and a second vertical crushing blade formed by bending with the first vertical crushing blade.

In addition, the microbial activation stirring device may include an anti-eccentricity member that receives the lower end of the shaft and is arranged on the inner lower surface of the stirring chamber; and a bottom center support that is arranged on the inner lower surface of the stirring chamber and is coupled to the anti-eccentricity member.

In addition, the eccentricity prevention unit may include an eccentricity prevention housing base arranged on the upper end of the bottom center support; an eccentricity prevention layer coupled to the upper surface of the eccentricity prevention housing base and into which the shaft is rotatably inserted; and an eccentricity prevention housing coupled to the upper surface of the eccentricity prevention housing base and having a shape that surrounds the outer surface of the eccentricity prevention layer.

Additionally, the above-mentioned anti-eccentricity layer may be polytetrafluoroethylene (PTFE).

In addition, the microbial activation stirring device includes a plurality of temperature sensors arranged within the stirring chamber, and the plurality of temperature sensors can be arranged spaced apart from each other in the upper and lower direction within the stirring chamber.

According to one embodiment of the present invention, a microbial activation stirring device crushes scum generated in an anaerobic digestion tank through a scum flow unit coupled to a shaft, moves the crushed scum to the lower center of the digestion tank, thereby increasing the contact time between scum and microorganisms, and ultimately improving the decomposition efficiency of organic matter.

Figure 1 shows a microbial activation stirring device according to one embodiment of the present invention.
Figure 2 shows a drawing centered on the second stirring shaft of the microbial activation stirring device illustrated in Figure 1.
Figure 3 shows the first scum flow unit of the microbial activation stirring device illustrated in Figure 1.
Figure 4 shows the first scum flow section shown in Figure 3 cut along line B1-B2.
Figure 5 shows a driving module according to one embodiment of the present invention.
Figure 6 shows the shape and folding structure of a stirring blade according to one embodiment of the present invention.
Figure 7 shows a drawing centered on the third stirring shaft of the microbial activation stirring device illustrated in Figure 1.
Figure 8 shows a drawing centered on the fourth stirring shaft of the microbial activation stirring device illustrated in Figure 1.
Figure 9 shows the structure of an eccentricity prevention unit according to one embodiment of the present invention.
Figure 10 shows the eccentricity prevention part illustrated in Figure 9 cut along line A1-A2.
Figure 11 shows a block diagram of a microbial activation stirring device according to one embodiment of the present invention.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Regardless of the drawing symbols, identical or similar components will be given the same reference numerals and redundant descriptions thereof will be omitted. The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably only for the convenience of writing the specification, and do not in themselves have distinct meanings or roles. In addition, the attached drawings are only intended to facilitate easy understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited by the attached drawings, and it should be understood that they include all modifications, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Terms that include ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The terms are used only to distinguish one component from another.

When it is said that a component is "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may also be other components in between. On the other hand, when it is said that a component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, it should be understood that terms such as “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

In the drawings, the sizes of components may be exaggerated or reduced for convenience of explanation. For example, the sizes and thicknesses of each component shown in the drawings are arbitrarily shown for convenience of explanation, and therefore the present invention is not necessarily limited to what is shown.

In some embodiments, where the embodiments are otherwise feasible, a particular process sequence may be performed in a different order than the order described. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in a reverse order from the order described.

In the following embodiments, when it is said that a film, a region, a component, etc. are connected, it includes not only cases where the film, region, or component is directly connected, but also cases where other film, region, or component is interposed between the film, region, or component and is indirectly connected. For example, in the present specification, when it is said that a film, region, or component, etc. is electrically connected, it includes not only cases where the film, region, or component is directly electrically connected, but also cases where other film, region, or component is interposed between them and is indirectly electrically connected.

Any or all of the embodiments of the present invention described above are not mutually exclusive or distinct. Any or all of the embodiments of the present invention described above may have their respective components or functions combined or used together.

Figure 1 shows a microbial activation stirring device according to one embodiment of the present invention.

The microbial activation stirring device (10) may include a stirring chamber (100). The stirring chamber (100) may be a vertical stirring device for anaerobic digestion of organic waste resources. For example, the stirring chamber (100) may rotate at 15 to 25 rpm. The stirring chamber (100) may enable sufficient stirring between organic waste resources and microorganisms inside the digestion tank. In addition, the stirring chamber (100) may be connected to an invert of a reducer to control the speed of the rotating body.

The stirring chamber (100) may include a chamber body (110). The chamber body (110) may form the overall outer shape of the stirring chamber (100). The chamber body (110) may form a hollow shape. For example, the chamber body (110) may have a cylindrical shape with an upper and lower end open. The chamber body (110) may include a chamber body extension bar (111). The chamber body extension bar (111) may extend upward from the upper end of the chamber body (110). The chamber body extension bar (111) may have a thickness smaller than the thickness of the chamber body (110).

The stirring chamber (100) may include a chamber cover (120). The chamber cover (120) may be connected or coupled to an open upper portion of the chamber body (110). For example, the chamber cover (120) may be formed to extend from an inner surface of the chamber body (110) toward the center of the chamber body (110). The bottom surface of the chamber cover (120) may be directed toward or face the axial center of the chamber body (110).

The chamber cover part (120) may include a chamber inlet (121). The chamber inlet (121) may be located at the center of the chamber cover part (120). The chamber inlet (121) may form a shape that extends a predetermined distance upward from the center of the chamber cover part (120). The chamber inlet (121) may function as an upper inlet of the stirring chamber (100).

The stirring chamber (100) may include a chamber bottom portion (130). The chamber bottom portion (130) may be connected or coupled to an open lower portion of the chamber body (110). For example, the chamber bottom portion (130) may be formed to extend from an inner surface of the chamber body (110) toward the center of the chamber body (110). An upper surface of the chamber bottom portion (130) may face or be directed toward the axial center of the chamber body (110).

The chamber bottom part (130) may include a bottom center (131). The bottom center (131) may form a lower end of the chamber bottom part (130). For example, the bottom center (131) may form the lowermost end of the stirring chamber (100). The chamber bottom part (130) may include a bottom extension bar (132). The bottom extension bar (132) may extend from an outer end of the chamber bottom part (130) toward an outer side of the chamber body (110). The chamber bottom part (130) may include a bottom center support (135). The bottom center support (135) may be located on an upper surface of the bottom center (131). The bottom center support (135) can be connected or coupled to an eccentricity prevention member (600) described later.

The stirring chamber (100) may include a shaft fixing plate (140). The shaft fixing plate (140) may be placed at the chamber inlet (121) of the chamber cover (120). The shaft fixing plate (140) may have a plate or board shape. The shaft fixing plate (140) may have a circular plate shape. The shaft fixing plate (140) may support a drive module (400) described below.

The stirring chamber (100) may include a sludge extraction pipe (150). The sludge extraction pipe (150) may enable external discharge of sludge accumulated within the stirring chamber (100). The sludge extraction pipe (150) may be spaced apart from the inner surface of the chamber bottom portion (130) and may be installed penetrating the chamber body (110). That is, the sludge extraction pipe (150) may recover sludge collected at the center of the chamber bottom portion (130) and allow it to flow to the outside of the chamber body (110).

The microbial activation stirring device (10) may include a shaft (200). The shaft (200) may be installed along the axial direction of the stirring chamber (100) within the stirring chamber (100). For example, the lower end of the shaft (200) may be supported on a chamber bottom part (130), and the upper end of the shaft (200) may be connected to a chamber cover part (120).

For example, the lower end of the shaft (200) may be supported on the bottom center (131), while the upper end of the shaft (200) may be connected to the chamber inlet (121). For example, the upper end of the shaft (200) may be connected or coupled to a shaft fixing plate (140). The shaft fixing plate (140) may support the load of the shaft (200). Through this, the lower end of the shaft (200) may be maintained free within the chamber body (110).

The shaft (200) may include a plurality of shafts (210, 220, 230, 240). The plurality of shafts (210, 220, 230, 240) may be arranged in a row. For example, the plurality of shafts (210, 220, 230, 240) may be connected sequentially from the top to the bottom. The plurality of shafts (210, 220, 230, 240) may be integrally connected and may be rotatable simultaneously. The shaft (200) may include a shaft connection frame (250).

The shaft connecting frame (250) can connect a plurality of shafts (210, 220, 230, 240). For example, the shaft connecting frame (250) can function as a connecting medium between the motor shaft (210) and the first stirring shaft (220). For example, the shaft connecting frame (250) can connect the lower end of the motor shaft (210) and the upper end of the first stirring shaft (220). For example, the shaft connecting frame (250) includes a motor shaft frame coupled to the motor shaft (210) and a first stirring shaft frame coupled to the first stirring shaft (220), and the motor shaft frame and the first stirring shaft frame can be connected using a fastening means such as a connecting bolt.

The microbial activation stirring device (10) may include a scum flow unit (300). The scum flow unit (300) may have a crushing and downward flow function for the digestion liquid and scum within the stirring chamber (100).

The scum flow unit (300) may include a first scum flow unit (310). The first scum flow unit (310) may include a first scum flow screw (311). The first scum flow screw (311) may be arranged along the first stirring shaft (220).

The first scum flow unit (310) may include a scum flow pipe (312). The scum flow pipe (312) may accommodate a first scum flow screw (311). An inner surface of the scum flow pipe (312) may face the first scum flow screw (311). The scum flow pipe (312) may include an upper surface (311a) of the flow pipe. A first stirring shaft (220) may penetrate the upper surface (311a) of the flow pipe. The upper surface (311a) of the flow pipe may have a circular plate shape and may be coupled to the first stirring shaft (220). The upper surface of the flow pipe (311a) can prevent the digestive fluid flowing in through the side of the scum flow pipe (312) from flowing to the upper part of the scum flow pipe (312).

The first scum flow portion (310) may include a scum inlet (313). The scum inlet (313) may be an opening or hole formed in the scum flow pipe (312). The scum inlet (313) may be an opening or hole formed in the side of the scum flow pipe (312). The scum inlet (313) may be adjusted to the level of the extinguishing liquid stored in the stirring chamber (100).

The scum inlet hole (313) is formed at the upper portion of the first scum flow portion (310) to enable the inflow of the extinguishing liquid contained in the stirring chamber (100). That is, the extinguishing liquid flowing within the stirring chamber (100) can be introduced into the interior of the scum flow pipe (312) through the scum inlet hole (313).

The first scum flow unit (310) may include a scum grinding blade (315). The scum grinding blade (315) may be arranged on the upper outer side of the first scum flow unit (310). The scum grinding blade (315) may include a scum horizontal grinding blade (315h) and a scum vertical grinding blade (315v) coupled to the scum horizontal grinding blade (315h). The scum horizontal grinding blade (315h) may extend radially from the outer surface of the scum flow pipe (312).

The scum horizontal grinding blade (315h) may be plural. The scum horizontal grinding blade (315h) may be symmetrically arranged on both sides of the scum inlet hole (313). The scum vertical grinding blade (315v) may be coupled to the outer end of the scum horizontal grinding blade (315h). The scum vertical grinding blade (315v) and the scum horizontal grinding blade (315h) may be fixed by a grinding blade connecting portion (315p). For example, the grinding blade connecting portion (315p) may be a bolt structure that simultaneously penetrates and connects the scum horizontal grinding blade (315h) and the scum vertical grinding blade (315v).

The scum vertical grinding blade (315v) may be arranged parallel to the outer surface of the scum flow pipe (312) along the longitudinal direction of the scum flow pipe (312). The scum vertical grinding blade (315v) may have a folded shape. For example, the scum vertical grinding blade (315v) may include a first vertical grinding blade (315v1) facing the scum flow pipe (312) and a second vertical grinding blade (315v2) that is formed by being folded so as to be perpendicular to the first vertical grinding blade (315v1). The scum vertical grinding blade (315v) may have a structure that surrounds the outer end of the scum horizontal grinding blade (315h). For example, the second vertical grinding blade (315v2) may be arranged parallel to the side end of the scum horizontal grinding blade (315h). Meanwhile, the first vertical crushing blade (315v1) may be formed by bending at the outer edge of the second vertical crushing blade (315v2) and may have a structure that wraps around the end of the scum horizontal crushing blade (315h).

The scum flow unit (300) may include a second scum flow unit (320). The second scum flow unit (320) may include a second scum flow screw (321).

The first scum flow portion (310) and the second scum flow portion (320) can enable flow in opposite directions. For example, the first scum flow portion (310) can enable downward flow of the fluid, while the second scum flow portion (320) can enable upward flow of the fluid.

The first scum flow unit (310) and the second scum flow unit (320) are integrally connected to the shaft (200) and can rotate simultaneously. That is, when the shaft (200) rotates, the first scum flow screw (311) of the first scum flow unit (310) rotates in the forward direction, while the second scum flow screw (321) of the second scum flow unit (320) rotates in the reverse direction.

The contaminated water introduced through the scum inlet hole (313) of the first scum flow unit (310) can flow downwardly along the shaft (200) of the chamber body (110) and then flow upwardly along the inner and outer sides of the chamber body (110). Meanwhile, the contaminated water introduced through the second scum flow unit (320) can flow upwardly along the shaft (200) of the chamber body (110) and then flow downwardly along the inner and outer sides of the chamber body (110).

The microbial activation stirring device (10) may include a driving module (400).

The drive module (400) may include a drive housing (410). The drive housing (410) may be coupled to a shaft fixing plate (140). The drive housing (410) may be positioned on the upper outer side of the stirring chamber (100).

The drive module (400) may include a drive motor (420). The drive motor (420) may be placed on the upper side of the drive housing (410). The drive module (400) may include a differential gear (430). The differential gear (430) may be connected to a rotational axis of the drive motor (420) and may be connected to a motor shaft (210). The drive module (400) may transmit the driving force of the drive motor (420) to the motor shaft (210) through the differential gear (430).

The drive module (400) may include a sealing member (450). The sealing member (450) may include a sealing outer housing (451). The sealing outer housing (451) may be arranged at the bottom of the shaft fixing plate (140). The sealing outer housing (451) may have a shape of a motor shaft (210). The motor shaft (210) may pass through the sealing outer housing (451). A sealing member may be arranged at a connection portion between the motor shaft (210) and the sealing outer housing (451).

The confidentiality unit (450) may include a confidentiality inner housing (453). The confidentiality inner housing (453) may be connected to the drive housing (410) and the confidentiality inner housing (453) by penetrating the shaft fixing plate (140). The lower part of the confidentiality inner housing (453) may have an open structure.

The upper end of the confidential inner housing (453) may be positioned higher than the upper end of the confidential outer housing (451). The confidential inner housing (453) may be positioned apart from the confidential outer housing (451). For example, a liquid (antifreeze) such as water may be positioned between the confidential inner housing (453) and the confidential outer housing (451) and inside the confidential inner housing (453).

Through this, leakage through the joint point of the shaft (200) and the shaft fixing plate (140) can be prevented. For example, gas that may be generated inside the chamber body (110) can be prevented from leaking through the upper space of the stirring chamber (100) by the sealing function of the airtight maintenance part (450).

The microbial activation stirring device (10) may include a stirring blade (500). The stirring blade (500) may enable upper and lower flow of the digestion liquid within the chamber body (110). The stirring blade (500) may include a first stirring blade (510). The first stirring blade (510) may be coupled to a first stirring shaft (220).

The stirring blade (500) may include a second stirring blade (520). The second stirring blade (520) may be coupled to a second stirring shaft (230).

The stirring blade (500) may include a third stirring blade (530). The third stirring blade (530) may be coupled to a third stirring shaft (240).

The above first stirring blade (510) and second stirring blade (520) may be foldably coupled to the shaft (200). For example, the first stirring blade (510) may be coupled to the first stirring shaft (220) so as to be swingable in the up-and-down direction. The first stirring shaft (220) may include a shaft bracket that surrounds the first stirring shaft (220). For example, the first stirring blade (510) may be swingably coupled to the shaft bracket. The inner end of the first stirring blade (510) may be coupled to the shaft bracket through a hinge structure. Through this, the first stirring blade (510) can change its position between a folded state parallel to the axial direction of the first stirring shaft (220) and an unfolded state parallel to the radial direction of the first stirring shaft (220).

The second stirring blade (520) can be swingably coupled to the second stirring shaft (230) in the vertical direction. The second stirring shaft (230) can include a shaft bracket that surrounds the second stirring shaft (230). For example, the second stirring blade (520) can be swingably coupled to the shaft bracket. An inner end of the second stirring blade (520) can be coupled to the shaft bracket through a hinge structure. Through this, the second stirring blade (520) can change its position between a folded state parallel to the axial direction of the second stirring shaft (230) and an unfolded state parallel to the radial direction of the second stirring shaft (230).

The present invention enables the external removal of a shaft (200) to which a stirring blade (500) is coupled through the folding shape of the first stirring blade (510) and the second stirring blade (520).

The stirring blade (500) may include a third stirring blade (530). The third stirring blade (530) may be positioned below the second scum flow portion (320). As time passes, the lower portion of the stirring chamber (100), which is an anaerobic digestion tank, accumulates sludge at the lower portion due to phenomena such as compaction, thereby forming a sludge lump, which may cause the sludge extraction pipe to become clogged.

The third stirring blade (530) can be rotated simultaneously with the rotation of the shaft (200) to float the compacted sludge at the bottom of the stirring chamber (100). The floated sludge can be floated by the scum flow unit (300) attached to the shaft (200). This creates a continuous flow for the settled sludge, thereby preventing the formation of sludge lumps, preventing the clogging of the pipe, and promoting the decomposition rate of the organic matter through continuous contact with microorganisms.

The microbial activation stirring device (10) may include an anti-eccentricity unit (600). The anti-eccentricity unit (600) may include an anti-eccentricity layer (610). The anti-eccentricity layer (610) may form a hollow cylindrical shape. The anti-eccentricity layer (610) may have an open shape at the top and bottom. The inner surface of the anti-eccentricity layer (610) may face the outer surface of the third stirring shaft (240). For example, the lower surface of the third stirring shaft (240) may be introduced through the upper surface of the anti-eccentricity layer (610).

The anti-eccentricity layer (610) may include a polytetrafluoroethylene (PTFE) material. Polytetrafluoroethylene may be a non-flammable fluororesin belonging to the organic polymer series made of large molecules formed by chemically bonding many small molecules (units) in a chain or network form. Polytetrafluoroethylene may be heat-resistant, have an extremely low coefficient of friction, and have excellent chemical resistance.

Polytetrafluoroethylene, commonly known by its abbreviation PTFE or its trade name Teflon, is chemically resistant to all chemicals and can have a smooth surface. The coefficient of friction of polytetrafluoroethylene ranges from 0.05 to 0.1, and the tensile strength can range from 10 MPa to 43 MPa.

In addition, polytetrafluoroethylene can maintain its physical properties over a wide temperature range (-270 to 250°C). Polytetrafluoroethylene can be suitable as a protective coating for gaskets, bearings, inner walls of containers and pipes, parts of valves and pumps used in corrosive environments, cookware, saw blades, and other products.

The eccentricity prevention unit (600) may include an eccentricity prevention housing (620). The eccentricity prevention housing (620) may have a shape that surrounds the eccentricity prevention layer (610). For example, the eccentricity prevention housing (620) may form a hollow cylindrical shape with an upper and a lower part open. For example, the eccentricity prevention housing (620) may use austenitic stainless steel. For example, the eccentricity prevention housing (620) may include a STS 304 material. The tensile strength of STS 304 may be 520 MPa or more. That is, the tensile strength of the eccentricity prevention housing (620) may be greater than the tensile strength of the eccentricity prevention layer (610). Through this, the eccentricity prevention housing (620) may stably support the eccentricity prevention layer (610).

The eccentricity prevention unit (600) may include an eccentricity prevention housing base (630). The eccentricity prevention housing base (630) may be connected or coupled to the bottom of the eccentricity prevention layer (610) and the eccentricity prevention housing (620). The eccentricity prevention housing base (630) may have a plate shape.

The anti-eccentricity housing base (630) can function as a flange that is coupled to the upper end of the bottom center support (135). That is, the anti-eccentricity housing base (630) and the upper end of the bottom center support (135) can be coupled through a fastening means such as a coupling bolt. The anti-eccentricity housing base (630) can include a base reinforcement (632).

The base reinforcement (632) may be formed along the longitudinal direction on the outer surface of the eccentricity prevention housing (620). There may be a plurality of base reinforcements (632). The plurality of base reinforcements (632) may be arranged at predetermined intervals along the outer periphery of the eccentricity prevention housing (620). The present invention can prevent the shaft (200) from being detached by the eccentricity prevention member (600). That is, an eccentricity prevention layer (610) made of Teflon material may be arranged inside the eccentricity prevention housing (620).

In the past, even when sufficient eccentricity of the shaft (200) was compensated for, there was a problem that eccentric rotation occurred on the opposite side of the shaft reducer depending on the characteristics of the inflow raw water and the length of the shaft axis. The present invention installs a Teflon guide box through an eccentricity prevention layer (610) and an eccentricity prevention housing (620), and adopts the eccentricity prevention layer (610) as Teflon, thereby enabling improvement of the vulnerable part of the shaft (200) and durability.

The eccentricity prevention unit (600) can prevent eccentricity of the shaft (200) by enabling stable rotational behavior of the third stirring shaft (240). The third stirring shaft (240) can be introduced into the eccentricity prevention layer (610) in a rotatably manner. The friction between the third stirring shaft (240) and the inner surface of the eccentricity prevention layer (610) made of Teflon material can be minimized.

The lower end of the third stirring shaft (240) may be spaced apart from the upper surface of the eccentricity prevention housing base (630). The load of the shaft (200) including the third stirring shaft (240) may be transferred to the stirring chamber (100) by the shaft fixing plate (140). That is, the eccentricity prevention unit (600) may be free from the burden of the load of the shaft (200).

The microbial activation stirring device (10) may include a temperature sensor (700). There may be a plurality of temperature sensors (700). For example, the temperature sensor (700) may include a first temperature sensor (710) and a second temperature sensor (720). The first temperature sensor (710) may be disposed on the upper side of the inner surface of the chamber body (110). For example, the first temperature sensor (710) may be disposed on the chamber body (110) to match the height of the first stirring blade (510). The second temperature sensor (720) may be disposed below the first temperature sensor (710). For example, the second temperature sensor (720) can be placed in the chamber body (110) to match the height of the second stirring blade (520).

The present invention can measure the temperature difference within the stirring chamber (100) using a temperature sensor (700). That is, the upper and lower temperature difference can be applied to improve the stirring performance of the stirring chamber (100), which is an anaerobic digestion tank. Through this, the rotation speed of the stirring chamber (100) can be controlled.

The present invention can predict the stirring state by using the upper and lower temperature difference in the stirring chamber (100). By controlling the stirring speed by linking the intensity of stirring according to the temperature difference of the temperature sensor (700) with the differential gear (430) of the drive module (400), the intensity of stirring inside the stirring chamber (100) can be kept constant. Through this, the decomposition efficiency of organic matter can be improved.

이상일 경우는　교반 챔버(100)의 출력을 50~60hz 유지하며, 온도편차가 0.5

이내일 경우는 50hz 이하에서 운전할 수 있다. 불필요한 동력을 줄이면서, 교반강도는 안정적으로 운전할 수 있다.　For example, the temperature difference between the upper and lower parts of the stirring chamber (100) is 0.5

In this case, the output of the stirring chamber (100) is maintained at 50~60hz and the temperature deviation is 0.5

In this case, it can be operated at 50 Hz or less. It can operate stably with stirring intensity while reducing unnecessary power.

Meanwhile, the microbial activation stirring device (10) may be equipped with a flow meter (not shown). A plurality of flow meters may be installed in the vertical direction within the chamber body (110). For example, a plurality of flow values may be measured through flow meters installed vertically within the stirring chamber (100). An average flow value is calculated through the plurality of measured flow values, and the rotation speed of the stirring chamber (100) may be controlled through HZ adjustment by an inverter. That is, the stirring intensity of the stirring chamber (100) may be measured through the flow meter. Meanwhile, since securing a flow meter or a concentration meter is not easy, a method using a temperature sensor (700) may be possible.

The microbial activation stirring device (10) may include a heat exchange unit (800). The heat exchange unit (800) may be located inside the stirring chamber (100). Specifically, it may be located at a point 2 m below the stirring chamber (100). The heat exchange unit (800) may apply an indirect heat exchange method of introducing external hot water into the stirring chamber (100) to heat it. The heat exchange unit (800) may first heat the lower part of the stirring chamber (100) to cause a temperature difference between the upper and lower parts of the stirring chamber (100).

The following shows the process of maintaining the stirring intensity of the microbial activation stirring device (10).

First, the temperature deviation within the stirring chamber (100) is measured through the temperature sensor (700). If it is determined that the measured temperature deviation is outside the set allowable range, a heating instruction is given through the heat exchange unit (800). Here, the allowable range can be defined as determining that an appropriate stirring intensity is maintained within the stirring chamber (100). Through the heating instruction, the temperature of the lower part of the stirring chamber (100) can be increased. At the same time, the rotation speed of the shaft (200) can be controlled through the drive module (400).

Meanwhile, an initial operation control system can be applied to ensure the durability of the microbial activation stirring device (10).

The initial operation control system may mean sequentially increasing the initial operation speed of the microbial activation stirring device (10).

For example, the initial operation control system is A) Start slowly for 1 minute to match the 20Hz operation speed. It can operate at 20Hz for 20 minutes. B) Start slowly for 5 minutes to match the 40Hz operation speed. It can operate at 40Hz for 1 hour. C) Start slowly for 5 minutes to match the 60Hz operation speed. It can then operate continuously. (However, it can only operate up to 60Hz.) However, the operation time and Hz may change depending on the properties of the influent organic matter.

Meanwhile, a contaminant removal system capable of cleaning contaminants wrapped around the scum flow unit (300) and the stirring blade (500) may be introduced. The contaminant removal system may be for minimizing the contaminant wrapping phenomenon that may occur in the scum flow unit (300) and the stirring blade (500). The contaminant removal system can secure the stability of the stirrer and prevent user negligence, etc. when the scum flow unit (300) and the stirring blade (500) perform reverse rotation.

The contaminant removal system can operate normally within the range of the initially set current value, and can be operated when a certain current is exceeded (set by considering the duration in consideration of errors).

First, the waste removal system can be operated normally in forward operation. The digestion tank agitator can be stopped for 1.5 hours and then operated in reverse operation. It can be operated in reverse rotation for 1.5 hours. The reverse rotation of the digestion tank agitator can be stopped for 1.5 hours. Next, the digestion tank agitator can be operated normally.

Figure 11 shows a block diagram of a microbial activation stirring device according to one embodiment of the present invention.

A microbial activation stirring device (10) according to one embodiment of the present invention may include a control unit (11). The control unit (11) may perform a computation. The control unit (11) may process a signal. For example, the control unit (11) may receive input signals (S1, S2, S3) and generate output signals (S4, S5) based on the input signals (S1, S2, S3). The input signals (S1, S2, S3) may include or mean at least one of a first signal (S1), a second signal (S2), and a third signal (S3). The output signals (S4, S5) may include or mean at least one of a fourth signal (S4) and a fifth signal (S5).

The temperature sensor (700) can measure temperature information within the chamber body (110). That is, the first temperature sensor (710) and the second temperature sensor (720) can measure the upper and lower temperatures within the chamber body (110). The temperature sensor (700) can generate a first signal (S1) regarding the temperature while maintaining a predetermined height difference for the extinguishing water flowing within the chamber body (110) and transmit the signal to the control unit (11).

The heat exchange unit (800) may include a heat exchange flow rate sensor (810). The heat exchange flow rate sensor (810) may obtain the supply amount of fluid supplied through the heat exchange unit (800). The heat exchange flow rate sensor (810) may generate a second signal (S2) regarding the flow rate of fluid supplied to the chamber body (110) and transmit it to the control unit (11).

The drive module (400) may include an encoder (425) that senses the rotation speed of the drive motor (420). The encoder (425) may measure the driving speed of the drive motor (420) for rotating the shaft (200). The encoder (425) may generate a third signal (S3) including information about the rotation speed of the drive motor (420) and transmit it to the control unit (11). Based on the first, second, and third signals (S1, S2, S3), the control unit (11) may obtain information about the temperature difference of the extinguishing water flowing in the chamber body (110), the flow rate of the temperature supplied through the heat exchange unit (800), and the rotation speed of the drive motor (420) in real time.

The control unit (11) can generate a fourth signal (S4) based on the input signals (S1, S2, S3). The fourth signal (S4) can include information about the operation of the drive motor (420) based on information about the temperature deviation of the fire extinguishing water and the temperature flow rate. For example, the fourth signal (S4) can include information about adjusting the driving speed of the drive motor (420) when it is determined that the temperature deviation of the fire extinguishing water exceeds a set range.

The control unit (11) can generate a fifth signal (S5) based on the input signals (S1, S2, S3). The fifth signal (S5) can include information regarding the operation of the heat exchange unit (800). For example, the fifth signal (S5) can include information regarding controlling the amount of heat supplied to the chamber body (110) by controlling the flow rate control valve forming the heat exchange unit (800) when it is determined that the temperature deviation of the extinguishing water exceeds a set range.

Although the microbial activation stirring device according to the above embodiment of the present invention has been described as a specific embodiment, this is merely an example and the present invention is not limited thereto, and should be interpreted as having the widest scope according to the basic idea disclosed in this specification. Those skilled in the art may implement an embodiment that is not specified by combining or replacing the disclosed embodiments, but this also does not exceed the scope of the present invention. In addition, those skilled in the art may easily change or modify the disclosed embodiment based on this specification, and it is clear that such changes or modifications also fall within the scope of the present invention.

10: Microbial activation stirring device 100: Stirring chamber
11: Control unit 110: Chamber body
111: Chamber body extension bar 120: Chamber cover part
121: Chamber entrance 130: Chamber bottom
131: Bottom center 132: Bottom extension bar
135: Bottom center support 140: Shaft fixing plate
150 : Sludge extraction pipe 200 : Shaft
210: Motor shaft 220: First stirring shaft
230: 2nd stirring shaft 240: 3rd stirring shaft
250: Shaft connecting frame 300: Scum fluid part
310: 1st scum flow part 311: 1st scum flow screw
312: Scum flow pipe 313: Scum inlet hole
315: Scum Crushing Blade 315h: Scum Horizontal Crushing Blade
315p: Crusher blade connection 315v: Scum vertical crusher blade
320: Second scum flow unit 321: Second scum flow screw
400 : Drive module 410 : Drive housing
420: Drive motor 430: Differential gear
450 : Confidentiality Section 451 : Confidentiality External Housing
453 : Confidential inner housing 500 : Stirring blade
510: 1st stirring blade 520: 2nd stirring blade
530: 3rd stirring blade 600: Anti-eccentricity part
610: Anti-eccentricity layer 620: Anti-eccentricity housing
630: Anti-eccentric housing base 632: Base reinforcement
700: Temperature sensor 710: First temperature sensor
720: Second temperature sensor 800: Heat exchanger
810 : Heat exchange flow sensor

Claims (8)

A stirring chamber containing organic waste and microorganisms;
A shaft installed along the axial direction of the stirring chamber within the stirring chamber;
A plurality of scum flow members coupled to the shaft and rotating within the stirring chamber according to the rotation of the shaft;
A driving module fixed to the above stirring chamber and providing driving force to the shaft; and
A stirring blade coupled to the shaft and rotating within the stirring chamber according to the rotation of the shaft, and enabling an upper and lower flow of organic waste resources and microorganisms stored in the stirring chamber;
The above multiple scum fluid parts are:
a first scum flow member arranged on the shaft; and
a second scum flow member disposed on the shaft and positioned below the first scum flow member;
The above first scum flow unit includes a first scum flow screw,
The second scum flow unit includes a second scum flow screw,
The above first scum fluid part is,
The first scum flow screw coupled to the above shaft;
A scum flow tube accommodating the first scum flow screw;
A scum inlet formed in the above scum flow tube; and
Including a scum crushing blade arranged in the above scum flow pipe;
The first scum flow screw and the second scum flow screw are each formed with screw pitches in opposite directions.
Microbial activation stirring device.
delete In the first paragraph,
The above scum crushing blade is a scum horizontal crushing blade extending radially from the outer surface of the scum flow tube; and
A scum vertical grinding blade coupled to the scum horizontal grinding blade and arranged parallel to the outer surface of the scum flow pipe along the longitudinal direction of the scum flow pipe;
Microbial activation stirring device.
In the third paragraph,
The above scum vertical crushing blade,
a first vertical crushing blade facing the scum flow tube; and
Including the first vertical crushing blade and the second vertical crushing blade formed by bending,
Microbial activation stirring device.
In the first paragraph,
The above microbial activation stirring device is,
An anti-eccentricity member that accommodates the lower end of the shaft and is arranged on the inner lower surface of the stirring chamber; and
A bottom center support is disposed at the inner bottom of the stirring chamber and is coupled to the eccentricity prevention member;
Microbial activation stirring device.
In clause 5,
The above anti-eccentricity part is,
An anti-eccentricity housing base positioned on the upper side of the bottom center support;
An eccentricity prevention layer coupled to the upper surface of the above eccentricity prevention housing base and into which the shaft is rotatably inserted; and
An eccentricity prevention housing having a shape that is coupled to the upper surface of the eccentricity prevention housing base and surrounds the outer surface of the eccentricity prevention layer;
Microbial activation stirring device.
In Article 6,
The above anti-eccentricity layer is,
Polytetrafluoroethylene (PTFE),
Microbial activation stirring device.
In the first paragraph,
The above microbial activation stirring device is,
comprising a plurality of temperature sensors arranged within the stirring chamber;
The above multiple temperature sensors,
are spaced apart in the upper and lower directions within the above stirring chamber,
Microbial activation stirring device.

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