Water distribution device of UASB (upflow anaerobic sludge blanket) anaerobic reactor

Abstract

The invention relates to the technical field of anaerobic reactors, and provides a water distribution device of a UASB anaerobic reactor, the water distribution device comprises a shell and a conveying mechanism, a sludge zone and a reaction zone are arranged in the shell, the sludge zone surrounds the outer side of the reaction zone, and the conveying mechanism is arranged in the shell and is used for feeding sludge and sewage into the reaction zone; the conveying mechanism comprises a water conveying pipe, a collecting pipe and a sludge conveying assembly, the water conveying pipe and the collecting pipe are both arranged in the shell, the inlet end of the water conveying pipe penetrates out of the shell to be used for spraying sewage, and the outlet end of the water conveying pipe extends to the sludge area; the inlet end of the collecting pipe extends to the sludge area, the outlet end of the collecting pipe extends to the reaction area, the inlet end of the collecting pipe is connected with a suction bin, and the suction bin directly faces the outlet end of the water supply pipe; the sludge conveying assembly is arranged in the sludge area and used for pushing sludge in the sludge area into the suction bin. According to the water distribution device of the UASB anaerobic reactor, the mass transfer efficiency can be improved, and the possibility of sludge stacking and hardening is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of anaerobic reactors, and in particular to a water distribution device of a UASB anaerobic reactor. Background Art

[0002] The UASB anaerobic reactor is a high-speed anaerobic reactor that uses biological methods to treat wastewater. The main function of the water distribution device of the UASB anaerobic reactor is to evenly distribute the water flow in the reactor to promote sufficient contact and reaction between water and microorganisms. This water distribution device is usually composed of a mixer, a guide device and a support structure, which is designed to ensure that the water flow can effectively pass through the entire reactor. The water distribution design is the core of the reactor design. Whether the water distribution is uniform and whether the anaerobic sludge and sewage are fully mixed is the basis for ensuring the reaction efficiency. In actual use, traditional water distribution devices have problems such as poor mass transfer between sewage and anaerobic sludge, sludge accumulation and hardening, and low reaction efficiency, so further improvement is needed. Summary of the invention

[0003] In order to improve mass transfer efficiency and reduce the possibility of sludge accumulation and hardening, the present application provides a water distribution device for a UASB anaerobic reactor.

[0004] The water distribution device of a UASB anaerobic reactor provided in this application adopts the following technical solution: A water distribution device for a UASB anaerobic reactor comprises a shell and a conveying mechanism, wherein the shell has a sludge zone and a reaction zone, wherein the sludge zone is surrounded by the outside of the reaction zone, and the conveying mechanism is arranged in the shell for conveying sludge and sewage into the reaction zone; the conveying mechanism comprises a water delivery pipe, a collecting pipe and a sludge delivery assembly, wherein the water delivery pipe and the collecting pipe are both arranged in the shell, the inlet end of the water delivery pipe passes through the shell for spraying sewage, and the outlet end of the water delivery pipe extends to the sludge zone; the inlet end of the collecting pipe extends to the sludge zone, and the outlet end of the collecting pipe extends to the reaction zone, the inlet end of the collecting pipe is connected to a suction bin, and the suction bin is connected to the inlet end of the collecting pipe. The suction bin is opposite to the outlet end of the water delivery pipe; the mud delivery assembly is arranged in the sludge area to push the sludge in the sludge area into the suction bin; the mud delivery assembly includes a pushing sleeve, a rotating ring, a guide member and a driving member, the pushing sleeve sliding sleeve is arranged on the peripheral wall of the water delivery pipe, and a pushing area with an opening facing the suction bin is formed between the inner wall of the pushing sleeve and the outer peripheral wall of the water delivery pipe; the rotating ring is rotatably installed on the bottom of the sludge area, the guide member is arranged between the pushing sleeve and the rotating ring, and when the rotating ring rotates around its own central axis, the guide member drives the pushing sleeve to move back and forth along the axial direction of the water delivery pipe; the driving member is arranged on the shell to drive the rotating ring to rotate.

[0005] By adopting the above technical scheme, through the arrangement of the water delivery pipe, the collecting pipe and the mud delivery component, when in use, the sewage is sprayed to the suction bin through the water delivery pipe, and enters the reaction zone through the collecting pipe. When the sewage passes through the suction bin, the negative pressure generated by the spraying can suck the anaerobic sludge in the sludge area into the suction bin, and enters the reaction zone along with the sewage, thereby improving the mass transfer effect of the anaerobic reaction and reducing the possibility of sludge accumulation, calcification and hardening in the sludge area. In addition, during the sewage spraying process, the mud delivery component is used to push the sludge in the sludge area toward the suction bin, and the mud delivery component cooperates with the negative pressure suction to ensure that the sludge can enter the reaction zone, thereby improving the stability of the overall structure.

[0006] Through the arrangement of the pushing sleeve, the rotating ring, the guide member and the driving member, when the sewage is sprayed into the reaction zone, the driving member drives the rotating member to rotate around its own central axis. Under the action of the guiding member, the pushing sleeve can move back and forth along the axial direction of the water delivery pipe, thereby continuously pushing the sludge toward the suction bin, so that the sludge gathers in the suction bin and flows to the reaction zone with the sewage, ensuring that the sludge can enter the reaction zone and improving the stability of the overall structure.

[0007] Optionally, the guide member includes a guide ring strip and a guide block, the guide ring strip is arranged on the top wall of the rotating ring, the guide ring strip is annularly wavy around the central axis of the rotating ring, and forms a plurality of wave crests and a plurality of wave troughs; one end of the guide block is connected to the push sleeve, and the other end is provided with an embedding groove for the guide ring strip to be embedded, when the rotating ring rotates and forces the guide block to move toward the wave crest, the push sleeve moves toward the side away from the collecting pipe, and when the rotating ring rotates and forces the guide block to move toward the wave trough, the push sleeve moves toward the side close to the collecting pipe.

[0008] By adopting the above-mentioned technical scheme, through the setting of the guide ring bar and the guide block, the guide ring bar is in a circular wave shape, so that when the rotating ring rotates around its own central axis, the rotating ring can push the guide block through the guide ring bar, forcing the pushing sleeve to move back and forth along the axial direction of the water supply pipe, so as to continuously push the sludge in the sludge area toward the suction bin, thereby improving the suction effect of the sludge and allowing the sludge to follow the sewage to flow to the reaction area.

[0009] Optionally, the collecting pipe is connected to a swirl bend, the inlet end of the swirl bend is connected to the outlet end of the collecting pipe, and the outlet end of the swirl bend is connected to the reaction zone; the angle between the inlet direction of the swirl bend and the outlet direction of the swirl bend is an obtuse angle.

[0010] By adopting the above technical solution and setting the cyclone elbow, after the sewage and sludge flow into the cyclone elbow through the collecting pipe, under the action of the cyclone elbow, the sewage and sludge entering the reaction zone form a cyclone, thereby enhancing the mass transfer effect of the anaerobic reaction.

[0011] Optionally, the inlet end of the swirl bend is sleeved on the outer peripheral wall of the outlet end of the collecting pipe, and the swirl bend is provided with a rotating component, which is used to drive the swirl bend to reciprocate around the central axis of the collecting pipe.

[0012] By adopting the above-mentioned technical solution and setting up the rotating component, when sewage and sludge pass through the swirl bend, the rotating component is used to force the swirl bend to rotate back and forth around the central axis of the collecting pipe, thereby achieving the effect of adjusting the direction of the outlet end of the swirl bend, which is beneficial to reducing the dead angle of water distribution and improving the mixing effect.

[0013] Optionally, a guide groove is provided on the outer circumferential wall of the collecting pipe outlet end, and the guide groove extends in an arc along the axial direction of the collecting pipe; the rotating assembly includes a guide column and a linkage member, one end of the guide column is connected to the inner circumferential wall of the inlet end of the swirl bend pipe, and the other end is slidably inserted in the guide groove, when the swirl bend pipe is driven to displace along the central axis of the collecting pipe, the guide column slides in the guide groove and drives the swirl bend pipe to rotate around the central axis of the collecting pipe; the linkage member is arranged between the swirl bend pipe and the push sleeve to drive the swirl bend pipe and the push sleeve to displace synchronously.

[0014] By adopting the above-mentioned technical scheme, through the setting of the guide column and the linkage, when the push sleeve moves toward the collecting pipe, the linkage forces the swirl bend and the push sleeve to move synchronously, so that the guide column of the swirl bend can slide in the guide groove, thereby forcing the swirl bend to rotate a certain angle around the central axis of the collecting pipe; when the push sleeve moves away from the collecting pipe, that is, the swirl bend moves in the opposite direction, under the action of the guide column, the swirl bend can rotate a certain angle around the central axis of the collecting pipe in the opposite direction, thereby realizing the reciprocating rotation of the swirl bend, which greatly improves the operational convenience of the overall structure.

[0015] Optionally, the linkage member includes a linkage ring and a linkage rod, the linkage ring is rotatably connected to the inlet end of the swirl elbow, one end of the linkage rod is connected to the linkage ring, and the other end is connected to the push sleeve.

[0016] By adopting the above technical solution and arranging the linkage ring and the linkage rod, the swirl bend pipe and the push sleeve can be displaced synchronously, and the swirl bend pipe can be rotated at a certain angle around the central axis of the collecting pipe.

[0017] Optionally, the pushing sleeve includes a first pushing portion and a second pushing portion, the first pushing portion is sleeved on the outer peripheral side of the water supply pipe, the guide block is arranged on the outer peripheral wall of the first pushing portion, the second pushing portion is slidably installed in the first pushing portion, and the second pushing portion is provided with a through hole for the water supply pipe to pass through; the second pushing portion is provided with a pulling component, and when the first pushing portion is displaced toward the side close to the collecting pipe, the pulling component forces the second pushing portion to displace toward the side close to the collecting pipe relative to the first pushing portion.

[0018] By adopting the above-mentioned technical solution and setting the pulling component, when the rotating ring rotates to drive the guide block to move toward the side close to the collecting pipe, it can drive the first pushing part and the second pushing part to move toward the side close to the collecting pipe. At the same time, under the action of the pulling component, the second pushing part can move toward the side close to the collecting pipe relative to the first pushing part, thereby improving the pushing effect on the sludge.

[0019] Optionally, one end of the first pushing part close to the collecting pipe is rotatably connected to a reversing wheel; the pulling assembly includes a pulling rope and a reset spring, one end of the pulling rope is connected to the second pushing part, and the other end passes around the reversing wheel and is connected to the inner wall of the shell; the reset spring is installed between the first pushing part and the second pushing part, and the reset spring normally causes the second pushing part to move to the end of the first pushing part away from the collecting pipe.

[0020] By adopting the above-mentioned technical solution, through the setting of the pulling rope and the reset spring, the reset spring normally causes the second pushing part to move to the end of the first pushing part away from the collecting pipe. When the first pushing part and the second pushing part move toward the side close to the collecting pipe, the pulling rope can pull the second pushing part, thereby forcing the second pushing part to move toward the side close to the collecting pipe relative to the first pushing part, thereby improving the pushing effect of the sludge.

[0021] Optionally, there are multiple water delivery pipes and they are arranged at intervals around the central axis of the shell. The number of the collecting pipes and the number of the push sleeves are arranged corresponding to the number of the water delivery pipes. Each of the push sleeves is slidably sleeved on the outer peripheral wall of the corresponding water delivery pipe. When the guide ring drives all the push sleeves to displace, the displacement directions of two adjacent push sleeves are opposite.

[0022] By adopting the above-mentioned technical scheme, by setting the displacement directions of two adjacent push sleeves to be opposite, on the one hand, when the guide ring drives all the push sleeves to displace, the displacement of all the push sleeves can stir the sludge in the sludge area to a certain extent, reduce the possibility of sludge accumulation and hardening, and the displacement directions of two adjacent push sleeves are opposite, thereby improving the stirring effect; on the other hand, the displacement directions of two adjacent push sleeves are opposite, so that among the multiple collecting pipes, at least a part of the collecting pipes are in a state of entering sludge, so that the overall structure can continuously transport sludge into the reaction zone to maintain the effect of continuously transporting sludge.

[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the arrangement of the water delivery pipe, the collecting pipe and the mud delivery assembly, when in use, the sewage is sprayed to the suction bin through the water delivery pipe and enters the reaction zone through the collecting pipe. When the sewage passes through the suction bin, the negative pressure generated by the spraying can suck the anaerobic sludge in the sludge zone into the suction bin and enter the reaction zone along with the sewage, thereby improving the mass transfer effect of the anaerobic reaction and reducing the possibility of sludge accumulation, calcification and hardening in the sludge zone. In addition, during the sewage spraying process, the mud delivery assembly is used to push the sludge in the sludge zone toward the suction bin. The mud delivery assembly cooperates with the negative pressure suction to ensure that the sludge can enter the reaction zone and improve the stability of the overall structure. 2. Through the arrangement of the push sleeve, the rotating ring, the guide member and the driving member, when the sewage is sprayed into the reaction zone, the driving member drives the rotating member to rotate around its own central axis. Under the action of the guide member, the push sleeve can move back and forth along the axial direction of the water delivery pipe, thereby continuously pushing the sludge toward the suction bin, so that the sludge gathers in the suction bin and flows to the reaction zone with the sewage, ensuring that the sludge can enter the reaction zone and improving the stability of the overall structure; 3. By setting the displacement directions of two adjacent push sleeves to be opposite, on the one hand, when the guide ring drives all the push sleeves to displace, the displacement of all the push sleeves can stir the sludge in the sludge area to a certain extent, reduce the possibility of sludge accumulation and hardening, and the displacement directions of the two adjacent push sleeves are opposite, thereby improving the stirring effect; on the other hand, the displacement directions of the two adjacent push sleeves are opposite, so that among the multiple collecting pipes, at least a part of the collecting pipes are in a state of entering sludge, so that the overall structure can continuously transport sludge into the reaction area to maintain the effect of continuous sludge transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of Example 1; Figure 2 is a partial cross-sectional view of the conveying mechanism of embodiment 1; Figure 3 yes Figure 2 The enlarged view of point A in the middle; Figure 4 is a partial cross-sectional view of the swirl elbow of Example 1; Figure 5 is a partial cross-sectional view of the guide ring strip of embodiment 1; Figure 6 is a schematic diagram of the structure of the rotating assembly embodied in Example 2; Figure 7 is a partial cross-sectional view of a guide post according to Embodiment 2; Figure 8 is a schematic diagram of the structure of the guide groove embodied in Example 2; Fig. 9 It is a partial cross-sectional view of the pulling assembly according to the third embodiment.

[0025] Description of reference numerals: 1. Shell; 11. Sludge zone; 12. Reaction zone; 13. Cover plate; 14. Separation ring plate; 15. Support ring; 16. Filter screen; 17. Water outlet pipe; 18. Drain pipe; 19. Isolation ring plate; 2. Conveying mechanism; 21. Water delivery pipe; 22. Collecting pipe; 221. Suction bin; 222. Guide groove; 223. Abutment notch; 23. Swirl elbow; 231. Docking ring; 3. Mud delivery assembly; 31. Push sleeve; 311. Push zone; 312. First push portion; 313. Second push portion; 314. 4. Through hole; 315. Reversing wheel; 316. Sliding groove; 317. Sliding block; 32. Rotating ring; 33. Guide ring strip; 331. Wave crest; 332. Wave trough; 34. Guide block; 341. Embedded groove; 35. Drive rod; 36. Drive gear; 37. Drive gear ring; 38. Belt; 4. Rotating assembly; 41. Guide column; 42. Linkage ring; 43. Linkage rod; 5. Pulling assembly; 51. Pulling rope; 52. Return spring; 6. Stirring assembly; 61. Stirring shaft; 62. Stirring blade; 63. Drive motor. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 -Attached Fig. 9 This application is described in further detail. Example 1

[0027] The embodiment of the present application discloses a water distribution device of a UASB anaerobic reactor.

[0028] Reference Figure 1 , Figure 2 A water distribution device for a UASB anaerobic reactor includes a shell 1 and a conveying mechanism 2. The shell 1 is a vertically arranged circular tank structure. A plurality of legs are arranged at the bottom of the shell 1, and the shell 1 is erected on the ground through the legs. The top of the shell 1 is open, and a cover plate 13 for opening and closing the shell 1 is installed on the top of the shell 1. The cover plate 13 can be detachably installed on the shell 1 by bolt connection.

[0029] Reference Figure 2 A separation ring plate 14 is installed in the shell 1, and the central axis of the separation ring plate 14 is arranged to coincide with the central axis of the shell 1. The separation ring plate 14 separates the interior of the shell 1 into a sludge area 11 and a reaction area 12. The sludge area 11 is surrounded by the outside of the reaction area 12, and the top of the reaction area 12 is connected to the sludge area 11; a support ring 15 located above the separation ring plate 14 is installed on the inner peripheral wall of the shell 1, and a filter screen 16 is installed on the support ring 15. The filter screen 16 is detachably installed on the support ring 15 by bolt connection.

[0030] Reference Figure 1 , Figure 2The shell 1 is respectively connected with a water outlet pipe 17 and a sewage pipe 18. The water outlet pipe 17 is installed on the peripheral wall of the shell 1. The inlet end of the water outlet pipe 17 is connected to the sludge area 11 and the inlet end of the water outlet pipe 17 is located above the filter screen 16; the sewage pipe 18 is installed on the bottom wall of the shell 1, and the inlet end of the sewage pipe 18 is connected to the sludge area 11; in this embodiment, both the water outlet pipe 17 and the sewage pipe 18 are installed with valves.

[0031] Reference Figure 1 , Figure 2 The shell 1 is equipped with a stirring component 6 for stirring sludge and sewage. The stirring component 6 includes a stirring shaft 61, a stirring blade 62 and a driving motor 63. The stirring shaft 61 is vertically arranged and located in the reaction zone 12. The lower end of the stirring shaft 61 is rotatably mounted on the bottom wall of the shell 1 and is coaxially arranged with the shell 1; the stirring blade 62 is mounted on the peripheral wall of the stirring shaft 61 and a plurality of stirring blades are spaced apart along the central axis of the stirring shaft 61. The driving motor 63 is fixedly mounted on the bottom of the shell 1, and the output shaft of the driving motor 63 passes through the bottom wall of the shell 1 and is coaxially connected to the stirring shaft 61.

[0032] Reference Figure 2 , Figure 3 The conveying mechanism 2 is arranged in the shell 1 for conveying sludge and sewage into the reaction zone 12. In this embodiment, the conveying mechanism 2 includes a water supply pipe 21, a collecting pipe 22 and a sludge delivery assembly 3. The water supply pipe 21 and the collecting pipe 22 are both arranged in the shell 1. The inlet end of the water supply pipe 21 passes through the shell 1 for spraying sewage, and the outlet end of the water supply pipe 21 extends to the sludge area 11; the collecting pipe 22 is installed on the dividing ring plate 14, the inlet end of the collecting pipe 22 extends to the sludge area 11, and the outlet end of the collecting pipe 22 extends to the reaction zone 12; the inlet end of the collecting pipe 22 is connected to a suction bin 221, the suction bin 221 is opposite to the outlet end of the water supply pipe 21, the outlet end of the water supply pipe 21 is inserted into the suction bin 221, and there is a gap between the inner circumferential wall of the suction bin 221 and the outlet end of the water supply pipe 21, so as to allow the sludge in the sludge area 11 to enter the collecting pipe 22.

[0033] Reference Figure 2 , Figure 4 It should be noted that, in the present embodiment, a plurality of water supply pipes 21 and a plurality of collecting pipes 22 are provided correspondingly, and the plurality of water supply pipes 21 and the plurality of collecting pipes 22 are arranged at intervals around the central axis of the shell 1, and the suction bin 221 of each collecting pipe 22 is directly opposite to the outlet end of the corresponding water supply pipe 21.

[0034] Reference Figure 3 , Figure 4Each collecting pipe 22 is connected to a swirl bend 23, the inlet end of the swirl bend 23 is sleeved on the outer peripheral wall of the outlet end of the collecting pipe 22, and the outlet end of the swirl bend 23 is connected to the reaction zone 12. In this embodiment, the inlet end of the swirl bend 23 and the outlet end of the collecting pipe 22 are detachably connected in the form of a threaded connection (the thread is not shown in the figure); the angle between the inlet direction of the swirl bend 23 and the outlet direction of the swirl bend 23 is an obtuse angle. Specifically, the angle between the inlet direction of the swirl bend 23 and the outlet direction of the swirl bend 23 is 120°.

[0035] Reference Figure 2 , Figure 3 The mud delivery component 3 is arranged in the sludge area 11 to push the sludge in the sludge area 11 into the suction bin 221. The mud delivery component 3 includes a pushing sleeve 31, a rotating ring 32, a guide member and a driving member. In this embodiment, the number of the pushing sleeves 31 is arranged corresponding to the number of the water delivery pipes 21, and each pushing sleeve 31 is slidably sleeved on the outer peripheral wall of the corresponding water delivery pipe 21; a pushing area 311 with an opening facing the suction bin 221 is formed between the inner wall of the pushing sleeve 31 and the outer peripheral wall of the water delivery pipe 21.

[0036] Reference Figure 3 , Figure 4 The rotating ring 32 is rotatably installed at the bottom of the sludge area 11, and the central axis of the rotating ring 32 is coincident with the central axis of the shell 1 and can rotate around its own central axis; the guide member is arranged between the push sleeve 31 and the rotating ring 32, and when the rotating ring 32 rotates around its own central axis, the guide member drives the push sleeve 31 to move back and forth along the axial direction of the water supply pipe 21.

[0037] Reference Figure 4 , Figure 5 The guide member includes a guide ring strip 33 and a guide block 34. The guide ring strip 33 is fixedly installed on the top wall of the rotating ring 32. The guide ring strip 33 is annular and wavy around the central axis of the rotating ring 32, and forms a plurality of wave crests 331 and a plurality of wave troughs 332. The plurality of wave crests 331 and the plurality of wave troughs 332 are arranged at intervals around the central axis of the shell 1; a plurality of guide blocks 34 are provided and are correspondingly arranged with a plurality of push sleeves 31. One end of each guide block 34 is fixedly connected to the outer peripheral wall of the corresponding push sleeve 31, and the other end is provided with an embedding groove 341 for the guide ring strip 33 to be embedded. When the rotating ring 32 rotates and forces the guide block 34 to move toward the wave crest 331, the push sleeve 31 moves toward the side away from the collecting pipe 22. When the rotating ring 32 rotates and forces the guide block 34 to move toward the wave trough 332, the push sleeve 31 moves toward the side close to the collecting pipe 22.

[0038] It should be noted that, in the present embodiment, when the guide ring strip 33 drives all the pushing sleeves 31 to displace, the displacement directions of two adjacent pushing sleeves 31 are opposite (i.e., when the guide block 34 of one of the pushing sleeves 31 is located at the crest 331 of the guide ring strip 33, the guide block 34 of the adjacent pushing sleeve 31 is located at the trough 332 of the guide ring strip 33).

[0039] Reference Figure 2 , Figure 3 The driving member is arranged on the shell 1 to drive the rotating ring 32 to rotate. The driving member includes a driving rod 35, a driving gear 36, a driving ring gear 37 and a belt 38. The driving rod 35 is rotatably installed on the bottom wall of the shell 1. One end of the driving rod 35 extends into the sludge area 11 and is coaxially fixed to the driving gear 36. The driving ring gear 37 is coaxially fixed to the inner circumferential wall of the rotating ring 32. The driving gear 36 and the driving ring gear 37 are meshed for transmission; the belt 38 is wound between the output shaft of the driving motor 63 and the driving rod 35, so that when the driving motor 63 is started, the stirring shaft 61 and the driving rod 35 can rotate synchronously.

[0040] Reference Figure 3 An isolation ring plate 19 is fixedly mounted on the outer peripheral wall of the separation ring plate 14. The isolation ring plate 19 is used to cover the driving gear 36 and the driving ring gear 37 to reduce the possibility of the driving gear 36 and the driving ring gear 37 being contaminated by sludge.

[0041] The implementation principle of Example 1 of the present application is as follows: when in use, sewage is sprayed to the suction bin 221 through the water delivery pipe 21, and enters the reaction zone 12 through the collection pipe 22. When the sewage passes through the suction bin 221, the negative pressure generated by the spraying can suck the anaerobic sludge in the sludge zone 11 into the suction bin 221, and enter the collection pipe 22 along with the sewage; in addition, during the sewage spraying process, the sludge in the sludge zone 11 is pushed toward the suction bin 221 by the mud delivery component 3, and the mud delivery component 3 cooperates with the negative pressure suction form to ensure that the sludge can enter the collection pipe 22 along with the sewage. After the sewage and sludge enter the reaction zone 12 through the cyclone bend 23, a cyclone is formed, which strengthens the mass transfer effect of the anaerobic reaction and prevents the sludge from accumulating and hardening. Subsequently, the sewage that has completed the reaction flows upward through the outlet pipe 17, and the sludge falls back to the reaction zone 12 again to mix with the newly entered sewage to form a cyclic reaction process, and the reaction efficiency is higher.

[0042] By setting the displacement directions of two adjacent pushing sleeves 31 to be opposite, on the one hand, the displacement directions of the two adjacent pushing sleeves 31 are opposite, which can improve the stirring effect of the sludge in the sludge area 11 to a certain extent; on the other hand, by setting the displacement directions of the two adjacent pushing sleeves 31 to be opposite, without considering negative pressure suction, at least a part of the collecting pipes 22 among the multiple collecting pipes 22 are in a sludge-intake state, so that the overall structure can continuously transport sludge into the reaction area 12, so as to maintain the effect of continuously transporting sludge from the sludge area 11 to the reaction area 12. Example 2

[0043] The embodiment of the present application discloses a water distribution device of a UASB anaerobic reactor.

[0044] Reference Figure 6 , Figure 7 , Figure 8 The difference between the water distribution device of a UASB anaerobic reactor disclosed in the embodiment of the present application and that in embodiment 1 is as follows: In this embodiment, the inlet end of the swirl bend 23 is sleeved on the outer peripheral wall of the outlet end of the collecting pipe 22, and the swirl bend 23 is provided with a rotating assembly 4, which is used to drive the swirl bend 23 to reciprocate around the central axis of the collecting pipe 22; the outer peripheral wall of the outlet end of the collecting pipe 22 is provided with a guide groove 222, and the guide groove 222 extends in an arc along the axis direction of the collecting pipe 22. The rotating assembly 4 includes a guide column 41 and a linkage, one end of the guide column 41 is fixedly connected to the inner peripheral wall of the inlet end of the swirl bend 23, and the other end is slidably inserted in the guide groove 222, and the swirl bend 23 is slidably and rotatably installed on the outlet end of the collecting pipe 22 through the guide column 41. When the swirl bend 23 is driven to displace along the central axis of the collecting pipe 22, the guide column 41 slides in the guide groove 222 and drives the swirl bend 23 to rotate around the central axis of the collecting pipe 22.

[0045] Reference Figure 6 , Figure 7 The linkage part is arranged between the swirl bend 23 and the push sleeve 31 to drive the swirl bend 23 and the push sleeve 31 to move synchronously; a docking ring 231 is fixedly installed at the inlet end of the swirl bend 23, and the linkage part includes a linkage ring 42 and a linkage rod 43, and the linkage ring 42 is rotatably connected to the side wall of the docking ring 231 close to the water supply pipe 21; one end of the linkage rod 43 is fixedly connected to the linkage ring 42, and the other end passes through the separation ring plate 14 and is fixedly connected to the push sleeve 31. In this embodiment, a plurality of linkage rods 43 are provided and are arranged at intervals around the central axis of the linkage ring 42.

[0046] Reference Figure 6 , Figure 8The outer wall of the suction bin 221 is provided with a plurality of abutment notches 223, and the plurality of abutment notches 223 are arranged corresponding to the plurality of linkage rods 43. The peripheral wall of each linkage rod 43 abuts against the side wall of the corresponding abutment notch 223, so that the plurality of linkage rods 43 limit the suction bin 221, thereby reducing the radial swing of the suction bin 221 along the collecting pipe 22 under the impact of sludge, thereby improving the connection stability between the collecting pipe 22 and the separating ring plate 14.

[0047] The implementation principle of Example 2 of the present application is as follows: when the push sleeve 31 is displaced toward the collecting pipe 22, the linkage rod 43 forces the swirl bend 23 and the push sleeve 31 to displace synchronously, so that the guide column 41 of the swirl bend 23 can slide in the guide groove 222, thereby forcing the swirl bend 23 to rotate a certain angle around the central axis of the collecting pipe 22; when the push sleeve 31 is displaced toward away from the collecting pipe 22, that is, the swirl bend 23 is displaced in the reverse direction, under the action of the guide column 41, the swirl bend 23 can rotate a certain angle in the reverse direction around the central axis of the collecting pipe 22, thereby realizing the reciprocating rotation of the swirl bend 23, thereby achieving the effect of adjusting the direction of the outlet end of the swirl bend 23, which is beneficial to reducing the dead angle of water distribution to improve the mixing effect.

[0048] Another particularly important point is that when the guide ring 33 drives all the push sleeves 31 to move, the displacement directions of two adjacent push sleeves 31 are opposite, so that the swing directions of two adjacent swirl bends 23 are opposite, further reducing the water distribution dead angle to improve the mixing effect. Example 3

[0049] The embodiment of the present application discloses a water distribution device of a UASB anaerobic reactor.

[0050] Reference Fig. 9 The difference between the water distribution device of a UASB anaerobic reactor disclosed in the embodiment of the present application and that in embodiment 1 is as follows: In this embodiment, the pushing sleeve 31 includes a first pushing portion 312 and a second pushing portion 313. The first pushing portion 312 is sleeved on the outer peripheral side of the water supply pipe 21. The inner diameter of the first pushing portion 312 is larger than the outer diameter of the water supply pipe 21. The guide block 34 is fixedly installed on the outer peripheral wall of the first pushing portion 312; the second pushing portion 313 is installed in the first pushing portion 312. The second pushing portion 313 is provided with a through hole 314 for the water supply pipe 21 to pass through. The inner peripheral wall of the first pushing portion 312 is provided with a sliding groove 316. The two ends of the sliding groove 316 are extended along the length direction of the first pushing portion 312. The peripheral wall of the second pushing portion 313 is fixedly installed with a sliding block 317. The sliding block 317 is slidably installed in the sliding groove 316. The second pushing portion 313 is slidably installed on the first pushing portion 312 through the sliding block 317 and can be close to or away from the suction bin 221.

[0051] Reference Fig. 9The second pushing part 313 is provided with a pulling component 5. When the first pushing part 312 is displaced toward the side close to the collecting pipe 22, the pulling component 5 forces the second pushing part 313 to be displaced toward the side close to the collecting pipe 22 relative to the first pushing part 312; the end of the first pushing part 312 close to the collecting pipe 22 is rotatably connected with a reversing wheel 315, and the pulling component 5 includes a pulling rope 51 and a reset spring 52. One end of the pulling rope 51 is fixedly connected to the sliding block 317 of the second pushing part 313, and the other end bypasses the reversing wheel 315 and is fixedly connected to the inner wall of the shell 1 located in the sludge area 11; it should be noted that in order to improve the pulling effect of the second pushing part 313, the number of sliding blocks 317 and pulling ropes can be correspondingly set to multiple (only one is shown in the figure).

[0052] The return spring 52 is installed in the sliding groove 316, one end of the return spring 52 is fixedly connected to the sliding block 317 of the second pushing portion 313, and the other end is fixedly connected to the inner wall of the sliding groove 316. The return spring 52 normally causes the second pushing portion 313 to move to the end of the first pushing portion 312 away from the collecting pipe 22 (that is, when the guide block 34 is located at the crest 331 of the guide ring strip 33, the second pushing portion 313 moves to the end of the first pushing portion 312 away from the collecting pipe 22).

[0053] The implementation principle of Example 3 of the present application is as follows: when the second pushing part 313 normally moves to the end of the first pushing part 312 away from the collecting pipe 22, and the guide block 34 drives the first pushing part 312 and the second pushing part 313 to move toward the side close to the collecting pipe 22, the pulling rope 51 can pull the second pushing part 313, thereby forcing the second pushing part 313 to move relative to the first pushing part 312 toward the side close to the collecting pipe 22, so as to push the sludge in the pushing area 311 and improve the pushing effect of the sludge.

[0054] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A water distribution device for a UASB anaerobic reactor, characterized in that: The invention comprises a shell (1) and a conveying mechanism (2), wherein the shell (1) has a sludge zone (11) and a reaction zone (12), wherein the sludge zone (11) is surrounded by the outside of the reaction zone (12), and the conveying mechanism (2) is arranged in the shell (1) to convey sludge and sewage to the reaction zone (12); the conveying mechanism (2) comprises a water delivery pipe (21), a collecting pipe (22) and a sludge delivery assembly (3), wherein the water delivery pipe (21) and the collecting pipe (22) are connected to the sludge delivery assembly (3); The collecting pipes (22) are all arranged in the shell (1); the inlet end of the water supply pipe (21) passes through the shell (1) for spraying sewage, and the outlet end of the water supply pipe (21) extends to the sludge area (11); the inlet end of the collecting pipe (22) extends to the sludge area (11), and the outlet end of the collecting pipe (22) extends to the reaction area (12); the inlet end of the collecting pipe (22) is connected to a suction bin (221), and the suction bin (22 1) directly opposite to the outlet end of the water delivery pipe (21); the mud delivery assembly (3) is arranged in the mud area (11) to push the mud in the mud area (11) into the suction bin (221); the mud delivery assembly (3) comprises a pushing sleeve (31), a rotating ring (32), a guide member and a driving member, the pushing sleeve (31) is slidably sleeved on the peripheral wall of the water delivery pipe (21), and the inner wall of the pushing sleeve (31) and the outer peripheral wall of the water delivery pipe (21) are interlocked. A push zone (311) is formed with an opening toward the suction bin (221); the rotating ring (32) is rotatably mounted on the bottom of the sludge zone (11); the guide member is arranged between the push sleeve (31) and the rotating ring (32); when the rotating ring (32) rotates around its own central axis, the guide member drives the push sleeve (31) to move back and forth along the axial direction of the water supply pipe (21); and the driving member is arranged on the housing (1) to drive the rotating ring (32) to rotate.

2. The water distribution device of a UASB anaerobic reactor according to claim 1, characterized in that: The guide member comprises a guide ring strip (33) and a guide block (34); the guide ring strip (33) is arranged on the top wall of the rotating ring (32); the guide ring strip (33) is annularly wavy around the central axis of the rotating ring (32) and forms a plurality of wave crests (331) and a plurality of wave troughs (332); one end of the guide block (34) is connected to the push sleeve (31), and the other end is provided with an embedding groove (341) for the guide ring strip (33) to be embedded; when the rotating ring (32) rotates and forces the guide block (34) to move toward the wave crest (331), the push sleeve (31) moves toward a side away from the collecting pipe (22); when the rotating ring (32) rotates and forces the guide block (34) to move toward the wave trough (332), the push sleeve (31) moves toward a side close to the collecting pipe (22).

3. The water distribution device of a UASB anaerobic reactor according to claim 1, characterized in that: The collecting pipe (22) is connected to a swirl bend pipe (23); the inlet end of the swirl bend pipe (23) is connected to the outlet end of the collecting pipe (22); the outlet end of the swirl bend pipe (23) is connected to the reaction zone (12); and the angle between the inlet direction of the swirl bend pipe (23) and the outlet direction of the swirl bend pipe (23) is an obtuse angle.

4. The water distribution device of a UASB anaerobic reactor according to claim 3, characterized in that: The inlet end of the swirl bend (23) is sleeved on the outer peripheral wall of the outlet end of the collecting pipe (22), and the swirl bend (23) is provided with a rotating assembly (4), and the rotating assembly (4) is used to drive the swirl bend (23) to reciprocate around the central axis of the collecting pipe (22).

5. The water distribution device of a UASB anaerobic reactor according to claim 4, characterized in that: The outer peripheral wall of the outlet end of the collecting pipe (22) is provided with a guide groove (222), and the guide groove (222) extends in an arc along the axial direction of the collecting pipe (22); the rotating assembly (4) comprises a guide column (41) and a linkage member, one end of the guide column (41) is connected to the inner peripheral wall of the inlet end of the swirl bend pipe (23), and the other end is slidably inserted in the guide groove (222); when the swirl bend pipe (23) is driven to move along the central axis of the collecting pipe (22), the guide column (41) slides in the guide groove (222) and drives the swirl bend pipe (23) to rotate around the central axis of the collecting pipe (22); the linkage member is arranged between the swirl bend pipe (23) and the pushing sleeve (31) to drive the swirl bend pipe (23) and the pushing sleeve (31) to move synchronously.

6. The water distribution device of a UASB anaerobic reactor according to claim 5, characterized in that: The linkage member comprises a linkage ring (42) and a linkage rod (43); the linkage ring (42) is rotatably connected to the inlet end of the swirl elbow (23); one end of the linkage rod (43) is connected to the linkage ring (42) and the other end is connected to the push sleeve (31).

7. The water distribution device of a UASB anaerobic reactor according to claim 2, characterized in that: The push sleeve (31) comprises a first push portion (312) and a second push portion (313); the first push portion (312) is sleeved on the outer peripheral side of the water supply pipe (21); the guide block (34) is arranged on the outer peripheral wall of the first push portion (312); the second push portion (313) is slidably installed in the first push portion (312); the second push portion (313) is provided with a through hole (314) for the water supply pipe (21) to pass through; the second push portion (313) is provided with a pulling component (5); when the first push portion (312) moves toward a side close to the collecting pipe (22), the pulling component (5) forces the second push portion (313) to move relative to the first push portion (312) toward a side close to the collecting pipe (22).

8. The water distribution device of the UASB anaerobic reactor according to claim 7, characterized in that: One end of the first pushing portion (312) close to the collecting pipe (22) is rotatably connected to a reversing wheel (315); the pulling assembly (5) comprises a pulling rope (51) and a return spring (52); one end of the pulling rope (51) is connected to the second pushing portion (313), and the other end of the pulling rope (51) passes around the reversing wheel (315) and is connected to the inner wall of the shell (1); the return spring (52) is installed between the first pushing portion (312) and the second pushing portion (313); the return spring (52) normally causes the second pushing portion (313) to move to the end of the first pushing portion (312) away from the collecting pipe (22).

9. The water distribution device of a UASB anaerobic reactor according to claim 2, characterized in that: A plurality of the water supply pipes (21) are arranged at intervals around the central axis of the shell (1); the number of the collecting pipes (22) and the number of the pushing sleeves (31) are arranged corresponding to the number of the water supply pipes (21); each of the pushing sleeves (31) is slidably sleeved on the outer peripheral wall of the corresponding water supply pipe (21); when the guide ring (33) drives all the pushing sleeves (31) to move, the displacement directions of two adjacent pushing sleeves (31) are opposite.

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