Sludge overflow prevention sludge tank mechanism and precipitation system

Abstract

The utility model discloses an anti-overflow sludge tank mechanism and a precipitation system, and mainly relates to the field of sewage treatment equipment. Comprising a long-strip-shaped sewage collecting groove, a groove opening is formed in the top side of the sewage collecting groove, a walking trolley with a linear stroke in the length direction of the groove opening is arranged at the position of the groove opening, a flow guide pipe communicated with a biochemical pool is fixed to one end of the sewage collecting groove, and a middle section pipe matched with the flow guide pipe in a telescopic mode is arranged at the end, located in the sewage collecting groove, of the flow guide pipe. The end, away from the flow guide pipe, of the middle-section pipe is provided with a connecting pipe in telescopic fit with the middle-section pipe, the end, away from the middle-section pipe, of the connecting pipe is provided with a butt joint part vertically extending upwards, the top end of the butt joint part is provided with a sewage suction pipe, a dredge pump is installed on the sewage suction pipe, and a hanging rod is fixed to the upper portion of the end, close to the connecting pipe, of the middle-section pipe. And the top end of the suspender is fixed on the walking trolley. The sludge tank has the beneficial effects that no visible sludge exists in the sludge tank, so that the sludge is prevented from overflowing, and meanwhile, the conveying amount of external return sludge is also ensured.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment equipment, in particular to a sludge trough mechanism and a sedimentation system for preventing sludge overflow. Background Art

[0002] The secondary sedimentation tank used in the sewage treatment plant adopts a structure that combines a horizontal flow sedimentation tank and an inclined plate sedimentation tank. The sludge on the bottom of the tank after sedimentation is extracted to the sludge tank on one side by a sludge suction machine, and then collected and transferred to the biochemical tank by gravity through the pipe at one end of the sludge tank. In actual operation, due to the poor fluidity of the sludge itself, it is difficult to drain the sludge in time by gravity, resulting in uneven distribution and local accumulation of sludge in the tank, and overflowing outside the sludge tank. The overflowed sludge falls into the inclined plate area and pollutes the secondary sedimentation tank again, resulting in an increase in suspended solids in the effluent, affecting the water quality of the biochemically treated water. Utility Model Content

[0003] The purpose of the utility model is to provide a sludge tank mechanism and a sedimentation system that can prevent sludge from overflowing, which can eliminate visible sludge in the sludge tank, avoid sludge overflow and also ensure the transport volume of external return sludge.

[0004] In order to achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0005] A sludge trough mechanism for preventing mud overflow comprises a long strip of sewage collecting trough, a notch is provided on the top side of the sewage collecting trough, a walking trolley with a linear stroke along its length direction is provided at the notch, a guide pipe connected to the biochemical pool is fixed at one end of the sewage collecting trough, a middle section pipe is provided at one end of the guide pipe located in the sewage collecting trough for telescopic cooperation with the middle section pipe, a connecting pipe is provided at one end of the middle section pipe away from the guide pipe for telescopic cooperation with the middle section pipe, a docking portion extending vertically upward is provided at one end of the connecting pipe away from the middle section pipe, a sewage suction pipe is provided at the top end of the docking portion, a sludge suction pump is installed on the sewage suction pipe, a suspension rod is fixed to the upper part of one end of the middle section pipe close to the connecting pipe, and the top end of the suspension rod is fixed to the walking trolley.

[0006] Guide rails extending along the length of the sewage collecting trough are symmetrically provided on both sides of the slot. The walking trolley adopts a metal frame structure. Track wheels are rotatably installed on the corner ends of both sides of the walking trolley. Arc grooves that match the guide rails are provided on the circumference of the track wheels.

[0007] The sewage collecting trough is arranged in parallel on one side of the sedimentation tank. A track is provided on the ground between the sewage collecting trough and the sedimentation tank. The length direction of the track is in the same direction as the sewage collecting tank. A support plate with a reciprocating stroke along its length direction is provided above the track. The support plate is equipped with walking wheels that travel on the track, and the mud suction pump is fixed on the support plate.

[0008] A drag chain is provided between the supporting plate and the traveling trolley, and the length of the drag chain is shorter than the maximum distance between the docking portion and the middle section pipe.

[0009] A clamp assembly is fixed to one end of the middle pipe close to the butt pipe, and the clamp assembly includes an upper hoop and a lower hoop fixed by fastening bolts. The top of the upper hoop is fixedly connected to the bottom end of the boom. A crossbeam is provided in the middle of the traveling trolley, and the crossbeam extends along the width direction of the slot. Strip holes are passed through the upper and lower parts of the crossbeam, and the top of the boom passes through the strip hole. A large nut is threadedly connected to the upper part of the boom, and the bottom surface of the large nut is in contact with the top surface of the crossbeam.

[0010] A plurality of supporting wheel mechanisms are provided at the bottom of the sewage collecting tank along its length direction, and the supporting wheel mechanisms include bottom supporting wheels whose axes are consistent with the width direction of the sewage collecting tank.

[0011] The supporting wheel mechanism also includes a plate frame located on both sides of the bottom supporting wheel. The plate frame is a sheet metal plate and includes a ∠-shaped bottom plate and an inclined plate. The bottom plate is used to be fixed to the bottom of the sewage collecting tank by bolts. An arc-shaped bend connecting the bottom plate and the inclined plate is provided between the bottom plate and the inclined plate. The two ends of the bottom supporting wheel are rotatably mounted on the top of the inclined plate.

[0012] A sedimentation system includes a sedimentation tank and an overflow tank connected at the bottom, and also includes the sludge trough mechanism for preventing sludge overflow as described above. The sludge collecting trough is arranged in parallel between the sedimentation tank and the overflow tank, and the terminal end of the sewage suction pipe is inserted into the bottom of the sedimentation tank.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The modified sewage collection tank can directly transport the sludge through the two-stage telescopic structure as the sludge at the bottom of the sedimentation tank is sucked out, and finally transported to the biochemical pool through the diversion pipe. There is no visible sludge leaking out of the sewage collection tank, which avoids environmental and water pollution caused by sludge accumulation and overflow, and also ensures the efficiency of sludge return transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the present invention (the sewage collecting tank is omitted).

[0016] Figure 2 It is a schematic diagram of the disassembly of the sewage collecting tank and internal components of the utility model.

[0017] Figure 3 It is a schematic diagram of the use state of the utility model.

[0018] Figure 4 It is a schematic diagram of the supporting wheel mechanism of the utility model.

[0019] Figure 5It is an overall schematic diagram of embodiment 2 of the present utility model.

[0020] Reference numerals shown in the accompanying drawings:

[0021] 1. Sewage collecting trough; 2. Diversion pipe; 3. Middle pipe; 4. Connecting pipe; 5. Docking part; 6. Sewage suction pipe; 7. Mud suction pump; 8. Support plate; 9. Travel wheel; 10. Track; 11. Guide rail; 12. Travel trolley; 13. Track wheel; 14. Crossbeam; 15. Strip hole; 16. Hanging rod; 17. Clamp assembly; 18. Ear plate; 19. Bottom supporting wheel; 20. Bottom plate; 21. Inclined plate; 22. Arc bend; 23. Sedimentation tank; 24. Overflow tank; 25. Bridge. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that these equivalent forms also fall within the scope defined in this application.

[0023] Example 1: A sludge trough mechanism to prevent sludge overflow

[0024] This sludge tank is introduced separately and can be applied to various forms of sedimentation tank structures. It can be used to arrange this sludge tank on one side of the sedimentation tank to discharge sludge and divert water, so as to achieve effective docking and sludge transportation with the biochemical tank.

[0025] The sludge tank mechanism includes a long rectangular sewage collecting tank 1, one end of the sewage collecting tank 1 is provided with a mounting hole, a guide pipe 2 is fixed through the mounting hole, the outer end of the guide pipe 2 is used to connect with the biochemical pool through a pipeline to introduce the sludge into the biochemical pool, the part of the guide pipe 2 located in the sewage collecting tank 1 extends along the length direction of the sewage collecting tank 1, the inner end of the guide pipe 2 is provided with an inner end pipe mouth, the inner end pipe mouth is sleeved with a sealed and retractable middle section pipe 3, the middle section pipe 3 is a straight pipe, one end of the middle section pipe 3 is inserted into the sewage collecting tank 2 from the inner end pipe mouth, and the sewage collecting tank is connected to the sewage collecting tank 1. 2 is telescopically matched, and the other end of the middle tube 3 is inserted with a connecting tube 4 that is sealed and telescopically matched with it. The middle part of the connecting tube 4 is provided with a right-angle bend, so that the connecting tube 4 is L-shaped, and the connecting tube 4 includes a telescopic portion that is sealed and telescopically matched with the middle tube 3 and a docking portion 5 extending vertically upward. The top of the docking portion 5 is provided with a sewage suction pipe 6, and a mud suction pump 7 is installed on the sewage suction pipe 6 to extract the mud into the connecting tube 4, and then directly push it to the diversion pipe 2 to enter the biochemical pool. There is no visible sludge in the sludge tank, which avoids sludge overflow and also ensures the external return sludge transportation volume.

[0026] A support plate 8 for fixing and supporting the sludge suction pump 7 is provided below the support plate 8. Travel wheels 9 are rotatably installed on the front and rear sides of the support plate 8. A track 10 is provided below the travel wheel 9 to match it. The travel wheel 9 is I-shaped and has a limiting annular groove on the middle circumference. The top of the track 10 is provided with a track 10 crown that matches the annular groove to constrain the travel direction of the travel wheel 9. The length direction of the track 10 is consistent with the length direction of the sewage collection tank 1. The track 10 is set on the ground on one side of the sewage collection tank 1, between the sewage collection tank 1 and the sedimentation tank, to facilitate movement during sludge suction. A motor for driving the travel wheels 9 is installed on the support plate 8. The motor is connected to and drives one of the travel wheels 9 to achieve active movement, so that the sewage suction pipe 6 can move back and forth along the length direction of the sewage collection tank 1 and the sedimentation tank to pump sludge.

[0027] A notch is provided on the top side of the sewage collecting tank 1, and guide rail rods 11 extending along the length direction of the sewage collecting tank 1 are symmetrically provided on both sides of the notch. The guide rail rod 11 is a circular rod, and a walking trolley 12 with a walking stroke along its length direction is provided above the notch. The walking trolley 12 adopts a metal frame structure, and the two side corner ends of the walking trolley 12 are rotatably installed with track wheels 10. The circumference of the track wheels 10 is provided with an arc groove that matches the guide rod 11. Based on the track wheels 10, the walking trolley 12 moves back and forth on the track rod 10.

[0028] The top of the upper hoop is fixedly connected to the bottom end of the boom 16, so as to realize the dragging and supporting of the middle section pipe 3, so that the end of the middle section pipe 3 close to the connecting pipe 4 moves with the traveling trolley 12, thereby telescoping relative to the guide pipe 2. The upper portion of the suspension rod 16 is threadedly connected with a large nut, and the large nut can quickly fix the suspension rod 16 above the beam 14, and is convenient for adjusting the position and the lifting strength.

[0029] Through the reciprocating movement of the sewage suction pipe 6, the connecting pipe 4 is directly dragged, and the middle pipe 3 is indirectly dragged, so that the two sections are telescopic. The first section of the connecting pipe 4 moves with the movement of the sewage suction pipe 6, and the second section is assisted and stabilized by the walking trolley 12 to move the middle pipe 3. After the transformation, the sludge is directly sucked through the connecting pipe 4, the middle pipe 3, and the diversion pipe 2 and transported to the biochemical pool. There is no visible sludge in the sludge tank, which avoids sludge overflow and also ensures the external return sludge transportation volume.

[0030] At the bottom of the sewage collecting tank 1, multiple groups of supporting roller mechanisms are provided along its length direction. The supporting roller mechanism includes a bottom supporting roller 19 and a ∠-shaped plate frame. The axial direction of the bottom supporting roller 19 is consistent with the width of the sewage collecting tank 1. The bottom supporting roller 19 is used to assist in supporting the telescopic pipeline at each stage below to prevent the pipeline from sinking excessively. There are two plate frames and they are respectively located at both ends of the bottom supporting roller 19. The two ends of the bottom supporting roller 19 are rotatably mounted with the plate frame on the same side. The plate frame includes a ∠-shaped bottom plate 20 and an inclined plate 21. The bottom plate 20 is used to pass through bolts. Fixed to the bottom of the sewage collecting tank 1, an arc-shaped bend 22 is provided between the bottom plate 20 and the inclined plate 21 to connect the two. The plate frame is an integrally formed metal plate (steel plate sheet metal processing), so it has a certain elasticity based on the characteristics of steel. The arc-shaped bend 22 part has elastic deformation characteristics, so that the inclined plate 21 can sink appropriately after being compressed, and has the ability to elastically reset upwards, so that when the diameters of the connecting pipe 4 and the middle pipe 3 are slightly different, each passing pipe can be elastically supported upwards to provide an effective supporting effect.

[0031] In order to improve the durability of the pipeline connection position, a drag chain is provided between the support plate 8 and the walking trolley 12. The length of the drag chain is shorter than the length of the telescopic part of the connecting pipe 4. When the sewage suction pipe 6 moves away from one end of the guide pipe 2 and sucks sewage, the telescopic part of the connecting pipe 4 is dragged out to pull out the middle section of the pipe 3. When the pulled-out length corresponds to the length of the drag chain, continuing to move will drive the walking trolley 12 to move in the same direction, thereby pulling the middle section of the pipe 3 out of the guide pipe 2, realizing the two-stage elongation.

[0032] Example 2: Sedimentation system based on the above sludge tank mechanism

[0033] It includes a sedimentation tank and an overflow tank. The bottoms of the sedimentation tank and the overflow tank are connected and filled with inclined plates 21. The above-mentioned sewage collecting tank 1 is provided between the sedimentation tank and the overflow tank. One end of the sewage collecting tank 1 is longer than the sedimentation tank, so that the guide pipe 2 has a margin.

[0034] A track 10 is also provided on the side of the overflow tank away from the sewage collecting tank 1, and a support plate 8 with running wheels 9 is provided on the track 10. Its structure is consistent with the structure of the support plate 8 and running wheels 9 between the sewage collecting tank 1 and the sedimentation tank. A bridge 25 is installed between the support plates 8 on both sides to facilitate walking and viewing on top.

[0035] Based on the above structure, a complete sedimentation system is formed. The sewage passes through the sedimentation tank liner and enters the overflow tank for clarification. There is a movable support plate 8 between the sedimentation tank and the sewage collecting tank 1. The sludge at the bottom of the sedimentation tank is sucked by movement and directly introduced into the two-stage telescopic pipe. The sludge is directly discharged into the biochemical tank through the diversion pipe 2 to complete the sludge diversion, achieve no sludge accumulation in the sludge tank, ensure the transportation of sludge, and avoid sludge overflow and pollution of the clean water in the overflow tank.

Claims

1. A sludge trough mechanism for preventing sludge overflow, characterized in that: The utility model comprises a long strip-shaped sewage collecting trough, a notch is provided on the top side of the sewage collecting trough, a walking trolley with a linear stroke along its length direction is provided at the notch, a guide pipe connected to the biochemical pool is fixed at one end of the sewage collecting trough, a middle section pipe is provided at one end of the guide pipe located in the sewage collecting trough and telescopically matched with the middle section pipe, a connecting pipe is provided at one end of the middle section pipe away from the guide pipe and telescopically matched with the middle section pipe, a docking part extending vertically upward is provided at one end of the connecting pipe away from the middle section pipe, a sewage suction pipe is provided at the top end of the docking part, a mud suction pump is installed on the sewage suction pipe, a boom is fixed at the upper part of one end of the middle section pipe close to the connecting pipe, and the top end of the boom is fixed on the walking trolley.

2. A sludge trough mechanism for preventing sludge overflow according to claim 1, characterized in that: Guide rails extending along the length of the sewage collecting trough are symmetrically provided on both sides of the slot. The walking trolley adopts a metal frame structure. Track wheels are rotatably installed on the corner ends of both sides of the walking trolley. Arc grooves that match the guide rails are provided on the circumference of the track wheels.

3. A sludge trough mechanism for preventing sludge overflow according to claim 2, characterized in that: The sewage collecting trough is arranged in parallel on one side of the sedimentation tank. A track is provided on the ground between the sewage collecting trough and the sedimentation tank. The length direction of the track is in the same direction as the sewage collecting tank. A support plate with a reciprocating stroke along its length direction is provided above the track. The support plate is equipped with walking wheels that travel on the track, and the mud suction pump is fixed on the support plate.

4. A sludge trough mechanism for preventing sludge overflow according to claim 3, characterized in that: A drag chain is provided between the supporting plate and the traveling trolley, and the length of the drag chain is shorter than the maximum distance between the docking portion and the middle section pipe.

5. The sludge trough mechanism for preventing sludge overflow according to claim 1, characterized in that: A clamp assembly is fixed to one end of the middle pipe close to the butt pipe, and the clamp assembly includes an upper hoop and a lower hoop fixed by fastening bolts. The top of the upper hoop is fixedly connected to the bottom end of the boom. A crossbeam is provided in the middle of the traveling trolley, and the crossbeam extends along the width direction of the slot. Strip holes are passed through the upper and lower parts of the crossbeam, and the top of the boom passes through the strip hole. A large nut is threadedly connected to the upper part of the boom, and the bottom surface of the large nut is in contact with the top surface of the crossbeam.

6. A sludge trough mechanism for preventing sludge overflow according to claim 1, characterized in that: A plurality of supporting wheel mechanisms are provided at the bottom of the sewage collecting tank along its length direction, and the supporting wheel mechanisms include bottom supporting wheels whose axes are consistent with the width direction of the sewage collecting tank.

7. A sludge trough mechanism for preventing sludge overflow according to claim 6, characterized in that: The supporting wheel mechanism also includes a plate frame located on both sides of the bottom supporting wheel. The plate frame is a sheet metal plate and includes a ∠-shaped bottom plate and an inclined plate. The bottom plate is used to be fixed to the bottom of the sewage collecting tank by bolts. An arc-shaped bend connecting the bottom plate and the inclined plate is provided between the bottom plate and the inclined plate. The two ends of the bottom supporting wheel are rotatably mounted on the top of the inclined plate.

8. A precipitation system, characterized in that: It includes a sedimentation tank and an overflow tank connected at the bottom, and also includes a sludge trough mechanism for preventing sludge overflow as described in any one of claims 1 to 7. The sludge collecting trough is arranged in parallel between the sedimentation tank and the overflow tank, and the end pipe mouth of the sewage suction pipe is inserted into the bottom of the sedimentation tank.

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