CN214130413U

CN214130413U - Sewage sedimentation tank

Info

Publication number: CN214130413U
Application number: CN202022484732.6U
Authority: CN
Inventors: 冼智林; 刘华强
Original assignee: Danling Zhenling Concrete Co ltd
Current assignee: Danling Zhenling Concrete Co ltd
Priority date: 2020-10-31
Filing date: 2020-10-31
Publication date: 2021-09-07
Anticipated expiration: 2030-10-31

Abstract

The utility model relates to a sewage sedimentation tank belongs to the field of sewage treatment technique, and it includes the sedimentation tank body, be provided with mud draw-out device on the sedimentation tank body, mud draw-out device is used for extracting this internal mud of sedimentation tank, still be provided with drive arrangement on the sedimentation tank body, drive arrangement is used for driving mud draw-out device and removes along the cell body border of sedimentation tank body. This application has the effect that alleviates staff's clean burden.

Description

Sewage sedimentation tank

Technical Field

The application relates to the field of sewage treatment technology, in particular to a sewage sedimentation tank.

Background

The concrete mixing plant is a combined device for intensively mixing concrete, and is also called a concrete precast yard. Because of its high degree of mechanization and automation, it has high productivity, can ensure the quality of concrete and save cement, and is commonly used in large and medium-sized water conservancy projects, electric power projects, bridges and other projects with large concrete engineering quantity, long construction period and centralized construction sites.

In the concrete mixing plant, the mixing host computer often needs to clear up the accumulational concrete in surface after using up, will clear up the sewage that produces in the completion after the clearance and collect in the sewage sedimentation tank, utilize the effect of precipitation to carry out solid-liquid separation to reach sewage purification treatment's effect.

In view of the above-mentioned related technologies, the inventor believes that a large amount of sludge always accumulates at the bottom of the sewage settling tank after the sewage settling tank is used for a long time, and in order to remove the sludge, the sludge often needs to be manually salvaged, which greatly consumes manpower.

SUMMERY OF THE UTILITY MODEL

In order to alleviate staff's clean burden, this application provides a sewage treatment pond.

The application provides a sewage treatment pond adopts following technical scheme:

the utility model provides a sewage sedimentation tank, includes the sedimentation tank body, be provided with mud extraction device on the sedimentation tank body, mud extraction device is used for extracting this internal mud of sedimentation tank, still be provided with drive arrangement on the sedimentation tank body, drive arrangement is used for driving mud extraction device and removes along the cell body border of sedimentation tank body.

Through adopting above-mentioned technical scheme, when the mud in the sewage sedimentation tank piles up too much, the staff opens the mud draw-out device and clears away the mud in the sedimentation tank, utilizes drive arrangement drive mud draw-out device at the cell body border round trip movement of sedimentation tank in order to enlarge clean area to saved the manpower, improved clean efficiency, alleviateed workman's clean burden.

Optionally, the sludge extraction device includes a slurry pump, a slurry extraction pipe and a slurry outlet pipe, one end of the slurry extraction pipe is connected to the slurry extraction port of the slurry pump, the other end of the slurry extraction pipe extends into the sedimentation tank body, and the slurry outlet pipe is arranged at the slurry outlet of the slurry pump.

Through adopting above-mentioned technical scheme, when needs clear up, the staff starts the slush pump, utilizes the mud pipe of taking out of slush pump to extract the mud in the sedimentation tank, takes mud out the back from a mud pipe, and concrete waste material piling zone centralized processing is transported to the rethread transport vechicle to reach the effect of the mud in the clearance sedimentation tank.

Optionally, the driving device includes a beam and a first driving assembly, the beam is disposed on the sedimentation tank body, the first driving assembly is configured to drive the beam to move along a tank body edge of the sedimentation tank body, and the mud pump is disposed on the beam.

Through adopting above-mentioned technical scheme, utilize first drive assembly, the mud pump on the drive crossbeam moves on the sedimentation tank to make the mud pump can extract the mud of large tracts of land in the sedimentation tank, improved clean efficiency.

Optionally, first drive assembly includes first motor and threaded rod, the threaded rod sets up the one side that is close to the cell body border at the sedimentation tank body, just the length direction of threaded rod is mutually perpendicular with the length direction of crossbeam, set up threaded hole on the crossbeam, the crossbeam passes through threaded hole and threaded rod screw-thread fit, the output shaft coaxial line of first motor sets up the one end at the threaded rod, one side of sedimentation tank body still is provided with the rotation stopping piece, the rotation stopping piece is used for preventing crossbeam circumferential direction on the threaded rod.

Through adopting above-mentioned technical scheme, when needs clear up, the staff starts first motor, and the output shaft of first motor rotates and drives the threaded rod and rotate, and the crossbeam passes through screw through-hole and threaded rod screw-thread fit, because only rotate the piece and can prevent crossbeam circumferential direction on the threaded rod for the crossbeam removes along the length direction of threaded rod, thereby drives the slush pump on the crossbeam and removes, is convenient for clear up the mud in the sedimentation tank.

Optionally, the rotation stopping part comprises a guide rod, the guide rod is arranged on the sedimentation tank body, the length direction of the guide rod is consistent with that of the threaded rod, a sliding hole is formed in the cross beam, and the cross beam is sleeved on the guide rod through the sliding hole in a sliding mode.

By adopting the technical scheme, the limiting effect of the guide rod is utilized, the cross beam is prevented from rotating along with the threaded rod when the threaded rod rotates, the cross beam is sleeved on the guide rod through the sliding hole in a sliding mode, and the stability of the cross beam when the cross beam moves on the threaded rod is also improved.

Optionally, a second driving assembly is further disposed on the cross beam, and the second driving assembly is configured to drive the mud pump to move on the cross beam along the length direction of the cross beam.

Through adopting above-mentioned technical scheme, utilize second drive assembly drive slush pump to move on the crossbeam, increased the clean area of slush pump, improved work efficiency, be convenient for carry out the large tracts of land clearance to the mud in the sedimentation tank.

Optionally, the second driving assembly comprises a sliding block and a first driving piece, the sliding block is sleeved on the beam in a sliding mode, limiting grooves are formed in two sides of the beam, limiting blocks matched with the limiting grooves are arranged on two sides of the sliding block, the sliding block is arranged on the beam in a sliding mode through the limiting grooves, the first driving piece is used for driving the sliding block to slide on the beam, and the mud pump is arranged on the sliding block.

By adopting the technical scheme, the driving piece is utilized to drive the sliding block to move on the cross beam, so that the mud pump is driven to move back and forth on the cross beam, and the flexibility in cleaning is improved; through the sliding fit of the limiting block and the limiting groove, the stability of the sliding block moving on the beam is improved.

Optionally, first driving piece includes second motor, dwang, gear and rack, the rack sets up on the crossbeam is close to the inner wall of slider one side, the dwang rotates to set up in the slider, just the length direction of dwang is mutually perpendicular with the crossbeam, the output shaft coaxial line of second motor sets up the one end that is located the slider at the dwang, the gear rotates the other end that sets up in the dwang is located the slider, the gear meshes with the rack mutually.

Through adopting above-mentioned technical scheme, open the second motor, the output shaft of second motor rotates, drives the gear revolve on the dwang, because gear and rack mesh mutually, gear revolve drives slider round trip movement on the crossbeam to drive slush pump round trip movement on the crossbeam, the simple easy operation of drive mode has improved staff's work efficiency.

Optionally, still be provided with on the crossbeam and wash the subassembly, wash the subassembly and be used for wasing accumulational mud on the inside wall of sedimentation tank body.

Through adopting above-mentioned technical scheme, utilize and wash the subassembly and wash the mud on the inside wall of sewage sedimentation tank to avoided to a certain extent because the inconvenient clearance of remaining mud on the inside wall, lead to the condition emergence that sediment constantly piles up on the lateral wall among the sedimentation process, alleviateed staff's clean burden.

Optionally, the cleaning assembly includes a high-pressure nozzle and a second driving member, the second driving member includes a rodless cylinder, the rodless cylinder includes a cylinder body and a moving block, the cross beam is provided with a receiving groove, the cylinder body is disposed in the receiving groove, the moving block is disposed on the cylinder body, and the high-pressure nozzle is disposed on the moving block.

By adopting the technical scheme, when cleaning is carried out, the high-pressure spray head is utilized to wash the sludge which is inconvenient to clean on the inner side wall of the sedimentation tank, and the washed sludge is extracted by the sludge pump, so that the cleaning effect is achieved; the rodless cylinder is started, the rodless cylinder drives the moving block to horizontally move on the cylinder body through the piston, and therefore the high-pressure spray head is driven to reciprocate in the containing groove, the scouring area of the high-pressure spray head is increased, and cleaning efficiency is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

when the sludge in the sewage sedimentation tank is excessively accumulated, a worker starts the sludge extraction device to remove the sludge in the sedimentation tank, and drives the sludge extraction device to move back and forth on the edge of the tank body of the sedimentation tank by using the driving device so as to enlarge the cleaning area, so that the labor is saved, the cleaning efficiency is improved, and the cleaning burden of workers is reduced;

the second driving assembly is utilized to drive the mud pump to move on the cross beam, so that the cleaning area of the mud pump is increased, the working efficiency is improved, and the sludge in the sedimentation tank can be conveniently cleaned in a large area;

when cleaning is carried out, the high-pressure spray head is utilized to wash the sludge which is inconvenient to clean on the inner side wall of the sedimentation tank, and the sludge which is washed away is extracted by the mud pump, so that the cleaning effect is achieved; the rodless cylinder is started, the rodless cylinder drives the moving block to horizontally move on the cylinder body through the piston, and therefore the high-pressure spray head is driven to reciprocate in the containing groove, the scouring area of the high-pressure spray head is increased, and cleaning efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a sewage sedimentation tank according to an embodiment of the present application.

Fig. 2 is a schematic cross-sectional view illustrating a second driving assembly after hiding the sedimentation tank body according to an embodiment of the present application.

FIG. 3 is a partial schematic view of a cleaning assembly according to an embodiment of the present application.

FIG. 4 is a partial schematic view of a water tank for displaying in an embodiment of the present application.

Description of reference numerals: 1. a sedimentation tank body; 11. a slide rail; 12. a fixing plate; 13. a guide plate; 131. a guide bar; 2. a mud pumping device; 21. a slurry pump; 22. a mud pumping pipe; 23. a mud outlet pipe; 3. a drive device; 31. a cross beam; 311. a pulley; 312. a limiting groove; 313. accommodating grooves; 32. a first drive assembly; 321. a first motor; 322. a threaded rod; 4. a slide rail; 5. a second drive assembly; 51. a slider; 511. a chute; 5111. a limiting block; 52. a first driving member; 521. a second motor; 522. rotating the rod; 523. a gear; 524. a rack; 6. cleaning the assembly; 61. a high pressure spray head; 62. a rodless cylinder; 621. a cylinder body; 622. a moving block; 7. a water tank; 71. a water pump; 8. a water pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a sewage sedimentation tank. Referring to fig. 1, a sewage sedimentation tank comprises a sedimentation tank body 1, the sedimentation tank body 1 is a rectangular groove with an opening at the upper end, a sludge extraction device 2 and a driving device 3 are arranged on the sedimentation tank body 1, the sludge extraction device 2 is used for extracting sludge in the sedimentation tank body 1, and the driving device 3 is used for driving the sludge extraction device 2 to move along the tank body edge of the sedimentation tank body 1; specifically, the sludge extraction device 2 comprises a sludge pump 21, a sludge extraction pipe 22 and a sludge outlet pipe 23, wherein one end of the sludge extraction pipe 22 is connected and arranged at a sludge extraction port of the sludge pump 21, the other end of the sludge extraction pipe extends into the sedimentation tank body 1, and the sludge outlet pipe 23 is connected and arranged at a sludge outlet of the sludge pump 21; when the sludge is required to be cleaned, the worker starts the slurry pump 21, the sludge in the sedimentation tank is extracted by the sludge extraction pipe 22 of the slurry pump 21, and the sludge is conveyed to the concrete waste stacking area for centralized treatment by the transport vehicle after being extracted from the sludge outlet pipe 23, so that the effect of cleaning the sludge in the sedimentation tank is achieved.

Referring to fig. 1 and 2, as an embodiment of the driving device 3, the driving device 3 includes a cross beam 31 and a first driving assembly 32, the cross beam 31 is slidably disposed at the open upper end of the sedimentation tank body 1, the tank body edges at two sides of the sedimentation tank body 1 are both provided with a slide rail 411, the length direction of the slide rail 411 is perpendicular to the length direction of the cross beam 31, one side of two ends of the cross beam 31 close to the slide rail 411 is both rotatably provided with a pulley 311, and the pulley 311 is in rolling fit with the slide rail 411; in this embodiment, the number of the pulleys 311 is four, but the number of the pulleys is only required to enable the beam 31 to stably move on the slide rail 411; the first driving assembly 32 is used for driving the cross beam 31 to move along the length direction of the slide rail 411, and the mud pump 21 is arranged on the cross beam 31.

Utilize pulley 311 and slide rail 411's sliding fit, improved the stability of crossbeam 31 when the top of sedimentation tank body 1 moves, through first drive assembly 32, drive crossbeam 31 drives the mud pump 21 on the crossbeam 31 and moves on the sedimentation tank to make mud pump 21 can extract the mud of large tracts of land in the sedimentation tank, improved clean efficiency.

Referring to fig. 1, as an embodiment of the first driving assembly 32, the first driving assembly 32 includes a first motor 321 and a threaded rod 322, two ends of one side of the sedimentation tank body 1, which are close to the sliding rail 411, are fixedly provided with fixing plates 12, two ends of the threaded rod 322 are rotatably arranged on the fixing plates 12, a length direction of the threaded rod 322 is perpendicular to a length direction of the cross beam 31, a side wall of one end of the cross beam 31, which is close to the threaded rod 322, is provided with a threaded through hole, the cross beam 31 is in threaded fit with the threaded rod 322 through the threaded through hole, and an output shaft of the first motor 321 is coaxially arranged at one end of the threaded rod 322, which extends out of the fixing plate 12; one side of keeping away from threaded rod 322 on the cell body border of sedimentation tank body 1 still is provided with the rotation stopping piece, utilizes rotation stopping piece to prevent crossbeam 31 circumferential direction on threaded rod 322 to a certain extent for crossbeam 31 moves along the length direction of threaded rod 322, has also improved the stability when crossbeam 31 moves on threaded rod 322.

Referring to fig. 1, specifically, the rotation stopping member includes a guide rod 131, guide plates 13 are disposed at two ends of one side of the sedimentation tank body 1, which is away from the threaded rod 322, which is close to the slide rail 411, the two ends of the guide rod 131 are fixedly disposed on the guide plates 13, the length direction of the guide rod 131 is consistent with the length direction of the slide rail 411, a slide hole is disposed on a side wall of one end of the cross beam 31, which is close to the guide rod 131, and the cross beam 31 is slidably sleeved on the guide rod 131 through the slide hole.

When needs clear up, the staff starts first motor 321, and the output shaft of first motor 321 rotates and drives threaded rod 322 and rotate, and crossbeam 31 passes through screw through-hole and threaded rod 322 screw-thread fit, because the guide bar can prevent crossbeam 31 circumferential direction on threaded rod 322 for crossbeam 31 moves on slide rail 411 along the length direction of threaded rod 322, thereby drives the mud pump 21 on crossbeam 31 and removes, is convenient for clear up the mud in the sedimentation tank.

Referring to fig. 1 and 2, a second driving assembly 5 is further disposed on the cross beam 31, and the second driving assembly 5 is used for driving the mud pump 21 to move on the cross beam 31 along the length direction of the cross beam 31; as an embodiment of the second driving assembly 5, the second driving assembly 5 includes a sliding block 51 and a first driving member 52, a sliding slot 511 is formed on the sliding block 51, the sliding block 51 is slidably sleeved on the cross beam 31 through the sliding slot 511, two sides of the cross beam 31 are provided with limit slots 312, limit blocks 5111 matched with the limit slots 312 are arranged on inner side walls of two sides of the sliding slot 511, the sliding block 51 is slidably arranged on the cross beam 31 through the limit slots 312, the first driving member 52 is used for driving the sliding block 51 to slide on the cross beam 31, and the mud pump 21 is fixedly arranged on the sliding block 51.

Referring to fig. 2, as an embodiment of the first driving member 52, the first driving member 52 includes a second motor 521, a rotating rod 522, a gear 523 and a rack 524, the rack 524 is disposed on an end wall of the side of the cross beam 31 close to the slider 51, the rotating rod 522 is rotatably disposed in the slider 51, a length direction of the rotating rod 522 is perpendicular to the cross beam 31, an output shaft of the second motor 521 is coaxially disposed at one end of the rotating rod 522 located outside the slider 51, the gear 523 is rotatably disposed at the other end of the rotating rod 522 located inside the slider 51, and the gear 523 is engaged with the rack 524; in the embodiment, the gear 523 is meshed with the rack 524 to drive the slider 51 to move, so that the structure is stable and the applicability is strong.

The staff turns on the second motor 521, the output shaft of the second motor 521 rotates to drive the gear 523 on the rotating rod 522 to rotate, and the gear 523 rotates to drive the sliding block 51 to move back and forth on the cross beam 31 due to the meshing of the gear 523 and the rack 524, so as to drive the mud pump 21 to move back and forth on the cross beam 31.

As another embodiment of the first driving member 52, the second driving member may also be configured as an air cylinder, the air cylinder is disposed in the cross beam 31, a piston rod of the air cylinder extends into the limiting groove 312 and is connected with the limiting block 5111, and the piston rod of the air cylinder is driven to extend and retract to drive the limiting block 5111 to move on the cross beam 31 through the limiting groove 312, so as to drive the mud pump 21 on the slide block 51 to move on the cross beam 31; compared with the former embodiment, the driving structure of the embodiment is simple and easy to operate, and the working efficiency of workers is improved, but the schematic diagram of the embodiment is not shown in the drawings of the embodiment of the application.

Referring to fig. 3, the beam 31 is further provided with a cleaning assembly 6, and the cleaning assembly 6 is used for cleaning sludge accumulated on the inner side wall of the sedimentation tank body 1; specifically, cleaning assembly 6 includes high pressure nozzle 61 and second driving piece, and the second driving piece includes no pole cylinder 62, and no pole cylinder 62 includes cylinder body 621 and movable block 622, has seted up holding tank 313 on the one end terminal surface of keeping away from slider 51 on the crossbeam 31, and cylinder body 621 sets up in holding tank 313, and movable block 622 slides and sets up on cylinder body 621, and high pressure nozzle 61 is fixed to be set up on movable block 622.

During cleaning, the high-pressure spray head 61 is used for scouring the sludge which is inconvenient to clean on the inner side wall of the sedimentation tank, and the sludge which is scoured and fallen is extracted by the mud pump 21 so as to achieve the cleaning effect; the rodless cylinder 62 is started, the rodless cylinder 62 drives the moving block 622 to horizontally move on the cylinder body 621 by using the piston, so that the high-pressure spray head 61 is driven to reciprocate in the accommodating groove 313, the scouring area of the high-pressure spray head 61 is increased, and the cleaning efficiency is improved.

Referring to fig. 3 and 4, the water tank 7 is further arranged at the edge of the sedimentation tank body 1, the water pump 71 is arranged in the water tank 7, the water outlet of the water pump 71 is connected with the high-pressure spray head 61 through the water pipe 8, and the water pump 71 is used for lifting water pressure, so that water in the water tank 7 is conveyed into the water inlet of the water pump 71 and then is injected into the water pipe 8 from the water outlet of the water pump 71, and the effect of conveying water conveniently is achieved. Wherein, the water pipe 8 is a telescopic high-pressure water pipe 8, so that the high-pressure spray head 61 can move on the cross beam 31 to spray water conveniently.

The implementation principle of the sewage sedimentation tank in the embodiment of the application is as follows: when the sludge in the sewage sedimentation tank is accumulated too much, a worker starts a slurry pump 21, the sludge in the sedimentation tank is extracted by using a sludge extraction pipe 22 of the slurry pump 21, and the sludge is transported to a concrete waste stacking area for centralized treatment by a transport vehicle after being extracted from a sludge outlet pipe 23, so that the effect of cleaning the sludge in the sedimentation tank is achieved; then the water pump 71 in the water tank 7 is started, the water pump 71 injects the water in the water tank 7 into the high-pressure spray nozzle 61 through the high-pressure water pipe 8, the rodless cylinder 62 is started, the high-pressure spray nozzle 61 which moves back and forth is used for washing the sludge which is inconvenient to clean on the inner side wall of the sedimentation tank, and the sludge which is washed away is pumped out through the mud pump 21, so that the effect of cleaning the sludge on the inner side wall is achieved;

the worker starts the first motor 321, an output shaft of the first motor 321 rotates to drive the threaded rod 322 to rotate, the cross beam 31 is in threaded fit with the threaded rod 322 through the threaded through hole, and the cross beam 31 moves on the sliding rail 411 along the length direction of the threaded rod 322 by using the limiting effect of the guide rod 131, so that the mud pump 21 on the cross beam 31 is driven to move;

the worker starts the second motor 521, the output shaft of the second motor 521 rotates to drive the gear 523 on the rotating rod 522 to rotate, and the gear 523 rotates to drive the sliding block 51 to move back and forth on the cross beam 31 due to the fact that the gear 523 is meshed with the rack 524, so that the mud pump 21 is driven to move back and forth on the cross beam 31; through with slush pump 21 round trip movement above sedimentation tank body 1 for slush pump 21 can be to the mud of sedimentation tank large tracts of land in the extraction, has not only enlarged clean area, has still saved the manpower, has improved cleaning efficiency, has alleviateed workman's clean burden.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a sewage sedimentation tank which characterized in that: including sedimentation tank body (1), be provided with mud extraction device (2) on sedimentation tank body (1), mud extraction device (2) are used for extracting the mud in sedimentation tank body (1), still be provided with drive arrangement (3) on sedimentation tank body (1), drive arrangement (3) are used for driving mud extraction device (2) and remove along the cell body border of sedimentation tank body (1).

2. A sewage sedimentation tank as claimed in claim 1, wherein: the sludge extraction device (2) comprises a sludge pump (21), a sludge extraction pipe (22) and a sludge outlet pipe (23), one end of the sludge extraction pipe (22) is connected with a sludge extraction port arranged on the sludge pump (21), the other end of the sludge extraction pipe (22) extends into the sedimentation tank body (1), and the sludge outlet pipe (23) is arranged at the sludge outlet of the sludge pump (21).

3. The sewage sedimentation tank of claim 2, wherein: the driving device (3) comprises a cross beam (31) and a first driving assembly (32), the cross beam (31) is arranged on the sedimentation tank body (1), the first driving assembly (32) is used for driving the cross beam (31) to move along the tank body edge of the sedimentation tank body (1), and the mud pump (21) is arranged on the cross beam (31).

4. A sewage sedimentation tank according to claim 3, wherein: first drive assembly (32) include first motor (321) and threaded rod (322), threaded rod (322) set up in sedimentation tank body (1) one side that is close to the cell body border, just the length direction of threaded rod (322) is mutually perpendicular with the length direction of crossbeam (31), set up threaded hole on crossbeam (31), crossbeam (31) are through screw hole and threaded rod (322) screw-thread fit, the output shaft coaxial line of first motor (321) sets up the one end at threaded rod (322), one side of sedimentation tank body (1) still is provided with the rotation stopping piece, the rotation stopping piece is used for preventing crossbeam (31) circumferential direction on threaded rod (322).

5. A sewage sedimentation tank as claimed in claim 4, wherein: the rotation stopping piece comprises a guide rod (131), the guide rod (131) is arranged on the sedimentation tank body (1), the length direction of the guide rod (131) is consistent with that of the threaded rod (322), a sliding hole is formed in the cross beam (31), and the cross beam (31) is sleeved on the guide rod (131) through the sliding hole in a sliding mode.

6. A sewage sedimentation tank according to claim 3, wherein: the cross beam (31) is further provided with a second driving assembly (5), and the second driving assembly (5) is used for driving the mud pump (21) to move on the cross beam (31) along the length direction of the cross beam (31).

7. A sewage sedimentation tank as claimed in claim 6, wherein: the second driving assembly (5) comprises a sliding block (51) and a first driving piece (52), the sliding block (51) is sleeved on the cross beam (31) in a sliding mode, limiting grooves (312) are formed in two sides of the cross beam (31), limiting blocks (5111) matched with the limiting grooves (312) are arranged on two sides of the sliding block (51), the sliding block (51) is arranged on the cross beam (31) in a sliding mode through the limiting grooves (312), the first driving piece (52) is used for driving the sliding block (51) to slide on the cross beam (31), and the mud pump (21) is arranged on the sliding block (51).

8. A sewage sedimentation tank as claimed in claim 7, wherein: first driving piece (52) include second motor (521), dwang (522), gear (523) and rack (524), rack (524) set up on crossbeam (31) is close to the inner wall of slider (51) one side, dwang (522) rotate to set up in slider (51), just the length direction and crossbeam (31) of dwang (522) are mutually perpendicular, the output shaft coaxial line of second motor (521) sets up the one end that is located slider (51) outside dwang (522), gear (523) rotate to set up the other end that is located slider (51) at dwang (522), gear (523) and rack (524) mesh mutually.

9. A sewage sedimentation tank according to claim 3, wherein: still be provided with on crossbeam (31) and wash subassembly (6), wash subassembly (6) and be used for wasing accumulational mud on the inside wall of sedimentation tank body (1).

10. A sewage sedimentation tank as claimed in claim 9, wherein: the cleaning assembly (6) comprises a high-pressure sprayer (61) and a second driving piece, the second driving piece comprises a rodless cylinder (62), the rodless cylinder (62) comprises a cylinder body (621) and a moving block (622), the cylinder body (621) is arranged on the cross beam (31), the moving block (622) is arranged on the cylinder body (621), and the high-pressure sprayer (61) is arranged on the moving block (622).