Sludge settling system

Abstract

The utility model discloses a sludge settling system, which comprises an inner tank body, an outer tank body, a scraping mechanism and a slag discharge groove, the inner tank body is arranged in the middle of the outer tank body, the inner tank body is respectively connected with a water inlet pipe and a first sludge discharge pipe, and the outer tank body is respectively connected with a water outlet pipe and a second sludge discharge pipe; the slag discharging groove comprises a first groove body and a second groove body which are the same in structure, the first groove body is arranged on the inner side edge of the top of the inner tank body, and the second groove body is arranged on the inner side of the outer tank body and lower than the first groove body; the scraping mechanism comprises a mounting frame, a rotary driving part, a rotating shaft, a connecting column and a slag scraping plate, the mounting frame is erected at the top of the outer tank body, the rotary driving part is arranged on the mounting frame, the rotating shaft is connected with the rotary driving part and is vertically arranged in the middle of the outer tank body, the connecting column is perpendicular to the rotating shaft, and the slag scraping plate comprises a first scraping plate and a second scraping plate. According to the sludge settling system disclosed by the utility model, scum of the inner tank body and the outer tank body can be conveniently cleaned at the same time, and the effluent quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a sludge sedimentation system. Background Art

[0002] In order to screen sludges of different qualities, facilitate the recycling of concentrated heavy sludge, improve the effluent quality and reduce costs, the structure of an inner cylinder and an outer cylinder has been adopted in the disclosed technology. The inner cylinder is arranged inside the outer cylinder, and sewage is discharged into the inner cylinder, so that the sewage in the inner cylinder flows out from the top to the outer cylinder, and in this process, the light sludge is driven into the outer cylinder to realize the screening of the sludge. However, the sewage often contains scum floating on the water surface, which easily affects the effluent quality, and the prior art lacks a structure for separately cleaning the scum in the inner cylinder and the outer cylinder. Summary of the Utility Model

[0003] In view of the above problems, the utility model provides a sludge sedimentation system, which is convenient for simultaneously cleaning the scum in the inner tank body and the outer tank body and improving the effluent quality.

[0004] The technical solution of the utility model is as follows:

[0005] A sludge sedimentation system, comprising:

[0006] An inner tank body, which is arranged in the middle of the outer tank body. The inner tank body is respectively connected with a water inlet pipe and a first sludge discharge pipe. The water inlet pipe is higher than the first sludge discharge pipe. The outer tank body is respectively connected with a water outlet pipe and a second sludge discharge pipe. The water outlet pipe is higher than the second sludge discharge pipe;

[0007] A slag discharge trough, which comprises a first trough body and a second trough body with the same structure. The first trough body is arranged at the inner edge of the top of the inner tank body, and the second trough body is arranged inside the outer tank body at a position lower than the first trough body;

[0008] A scraping mechanism, which comprises a mounting frame, a rotary driving part, a rotating shaft, a connecting column and a slag scraping plate. The mounting frame is erected on the top of the outer tank body. The rotary driving part is arranged on the mounting frame. The rotating shaft is connected with the rotary driving part and is vertically arranged in the middle of the outer tank body. The connecting column is arranged perpendicular to the rotating shaft. The slag scraping plate comprises a first scraping plate and a second scraping plate whose top sides are respectively rotatably connected with the connecting column. The movement track of the first scraping plate intersects with the first trough body, and the movement track of the second scraping plate intersects with the second trough body.

[0009] In a further technical solution, the inner width of the slag discharge trough is greater than the width of the slag scraping plate. An opening is arranged at one end of the slag scraping plate entering the slag discharge trough. A slag discharge port is arranged at the inner bottom of the end of the slag scraping plate leaving the slag discharge trough. A slag discharge pipe extending to the outside of the outer tank body is arranged at the slag discharge port; the inner bottom surface of the slag discharge trough gradually rises along the direction from the opening to the slag discharge port.

[0010] In a further technical solution, collar rings are respectively provided on the top sides of the first scraping plate and the second scraping plate, connecting grooves matching the collar rings are provided on the connecting column, and the collar rings are sleeved outside the connecting grooves and rotatably connected to the connecting column.

[0011] In a further technical solution, the slag scraping plate further includes a third scraping plate and a fourth scraping plate. The third scraping plate is provided on the bottom side of the connecting column between the rotating shaft and the first scraping plate, and the fourth scraping plate is provided on the bottom side of the connecting column between the inner tank body and the second scraping plate.

[0012] In a further technical solution, a filter screen is provided on the bottom side of the middle part of the slag discharge pipe.

[0013] In a further technical solution, installation columns are evenly arranged between the inner tank body and the outer tank body.

[0014] In a further technical solution, the bottoms of the inner tank body and the outer tank body are both conical.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1. On the basis of arranging an inner tank body in the outer tank body to screen light sludge and heavy sludge, a scraping mechanism and a slag discharge trough for scraping floating slag on the inner tank body and the outer tank body are arranged. The rotating driving part of the scraping mechanism can rotate the scraping plates on the connecting column to scrape on the sewage water surface, push the floating slag to move to the slag discharge trough for collection, which is convenient for subsequent discharge. The first scraping plate and the second scraping plate respectively correspond to the first trough body and the second trough body, and scrape the floating slag on the water surfaces of the inner tank body and the outer tank body respectively. Moreover, when the first scraping plate passes through the first trough body, it can rotate relative to the connecting column, and when the second scraping plate passes through the second trough body, it can rotate relative to the connecting column, while the floating slag is blocked by the slag discharge trough for collection. The rotating shaft can continuously rotate, realizing continuous collection of the floating slag, facilitating the simultaneous cleaning of the floating slag in the inner tank body and the outer tank body, and improving the effluent quality;

[0017] 2. The fixedly arranged third scraping plate and fourth scraping plate can respectively scrape the floating slag concentrated outside the moving ranges of the first scraping plate and the second scraping plate, which is beneficial for subsequent cleaning and avoids the floating slag being scattered on the water surface and affecting the effluent quality;

[0018] 3. The filter screen arranged on the slag discharge pipe can filter out and recycle the water entering together with the floating slag;

[0019] 4. The bottoms of the inner tank body and the outer tank body are conical, which is beneficial for sludge concentration and facilitates the output of sludge from the first sludge discharge pipe and the second sludge discharge pipe respectively. Description of the Drawings

[0020] Figure 1 is a schematic cross-sectional view of a sludge sedimentation system according to an embodiment of the present utility model;

[0021] Figure 2 is a schematic structural view of the slag discharge trough according to an embodiment of the present utility model;

[0022] Figure 3 is a partial sectional view of the slag discharge pipe described in the embodiment of the present utility model;

[0023] Figure 4 is a structural schematic diagram of the connecting column described in the embodiment of the present utility model.

[0024] Explanation of reference numerals:

[0025] 10. Inner pool body; 11. Water inlet pipe; 12. First sludge discharge pipe; 20. Outer pool body; 21. Water outlet pipe; 22. Second sludge discharge pipe; 31. Mounting frame; 32. Rotary drive member; 33. Rotating shaft; 34. Connecting column; 35. First scraper; 36. Second scraper; 37. Connecting groove; 38. Third scraper; 39. Fourth scraper; 41. First groove body; 42. Second groove body; 43. Opening; 44. Slag discharge port; 45. Slag discharge pipe; 46. Filter screen; 50. Mounting column. Detailed implementation manners

[0026] The embodiments of the present utility model will be further described below with reference to the accompanying drawings.

[0027] Embodiment:

[0028] As Figure 1 , Figure 2 and Figure 4As shown in the figure, a sludge sedimentation system includes an inner tank body 10, an outer tank body 20, a scraping mechanism and a slag discharge tank. The inner tank body 10 is arranged in the middle of the outer tank body 20. Installation columns 50 are evenly arranged between the inner tank body 10 and the outer tank body 20 for stably installing the inner tank body 10 in the outer tank body 20. A water inlet pipe 11 and a first sludge discharge pipe 12 are respectively connected to the inner tank body 10. The water inlet pipe 11 is higher than the first sludge discharge pipe 12. A water outlet pipe 21 and a second sludge discharge pipe 22 are respectively connected to the outer tank body 20. The water outlet pipe 21 is higher than the second sludge discharge pipe 22. The slag discharge tank includes a first tank body 41 and a second tank body 42 with the same structure. The inner width of the slag discharge tank is greater than the width of the slag scraping plate. An opening 43 is provided at one end of the slag scraping plate entering the slag discharge tank. The slag scraping plate can push the floating slag into the slag discharge tank from the opening 43. A slag discharge port 44 is provided at the inner bottom of one end of the slag scraping plate leaving the slag discharge tank. A slag discharge pipe 45 extending to the outside of the outer tank body 20 is provided at the slag discharge port 44. The inner bottom surface of the slag discharge tank gradually rises along the direction from the opening 43 to the slag discharge port 44. The first tank body 41 is arranged at the inner top edge of the inner tank body 10. The second tank body 42 is arranged inside the outer tank body 20 at a position lower than the first tank body 41. The water outlet pipe 21 can be arranged to align with the bottom of the second tank body 42, which is convenient for maintaining the water level in the outer tank body 20 at the position of the bottom of the second tank body 42 and is beneficial for the floating slag to enter the second tank body 42. The scraping mechanism includes a mounting frame 31, a rotary driving member 32, a rotating shaft 33, a connecting column 34 and a slag scraping plate. The mounting frame 31 is erected on the top of the outer tank body 20. The rotary driving member 32 can include a motor and a reduction box and is arranged on the mounting frame 31. The rotating shaft 33 is connected to the rotary driving member 32 and is vertically arranged in the middle of the outer tank body 20. The connecting column 34 is arranged perpendicular to the rotating shaft 33. The slag scraping plate includes a first scraping plate 35 and a second scraping plate 36. Collar rings are respectively provided on the top sides of the first scraping plate 35 and the second scraping plate 36. A connecting groove 37 matching the collar rings is provided on the connecting column 34. The collar rings are sleeved on the outside of the connecting groove 37 to rotatably connect the connecting column 34. The movement track of the first scraping plate 35 intersects with the first tank body 41, and the movement track of the second scraping plate 36 intersects with the second tank body 42.

[0029] The working principle of the above technical solution is as follows:

[0030] When the system works, sewage with sludge is input from the outside into the inner tank body 10 through the water inlet pipe 11. The heavy sludge sinks to the bottom of the inner tank body 10, and the light sludge and water gradually overflow to the top side edge of the inner tank body 10 and enter the outer tank body 20. The scum contained in the sewage is dispersed on the water surface of the inner tank body 10, and a part of it overflows with the water to the water surface of the outer tank body 20. At this time, the rotary driving member 32 is turned on, and the rotating shaft 33 drives the connecting column 34 to rotate. The first scraper 35 can scrape most of the scum in the inner tank body 10 into the first tank body 41. Similarly, the second scraper 36 can scrape most of the scum in the outer tank body 20 into the second tank body 42, and finally the scum is discharged from the slag discharge pipe 45. When the slag scraping plate passes through the slag discharge groove, it will be blocked by the bottom side of the slag discharge groove and the side far away from the opening 43. By rotating the collar relative to the connecting groove 37, the slag scraping plate can smoothly pass through the slag discharge groove after pushing the scum into the slag discharge groove. The rotating shaft 33 can continuously rotate to realize continuous collection of the scum. Finally, the water after sedimenting the sludge in the inner tank body 10 and the outer tank body 20 is discharged from the water outlet pipe 21, and the screened heavy sludge and light sludge are discharged from the first sludge discharge pipe 12 and the second sludge discharge pipe 22 respectively.

[0031] In another embodiment, as Figure 1 shown, the slag scraping plate further includes a third scraper 38 and a fourth scraper 39. The third scraper 38 is arranged at the bottom side of the connecting column 34 between the rotating shaft 33 and the first scraper 35, and the fourth scraper 39 is arranged at the bottom side of the connecting column 34 between the inner tank body 10 and the second scraper 36.

[0032] The fixedly arranged third scraper 38 and fourth scraper 39 can respectively scrape the scum concentrated outside the moving ranges of the first scraper 35 and the second scraper 36, which is beneficial to subsequent cleaning and avoids the scum being dispersed on the water surface and affecting the water outlet quality.

[0033] In another embodiment, as Figure 3 shown, a filter screen 46 is arranged at the bottom side of the middle part of the slag discharge pipe 45. The filter screen 46 arranged on the slag discharge pipe 45 can filter out and recycle the water entering together with the scum.

[0034] In another embodiment, as Figure 1 shown, the bottoms of both the inner tank body 10 and the outer tank body 20 are conical. The conical bottoms of the inner tank body 10 and the outer tank body 20 are beneficial to sludge concentration and facilitate the output of sludge from the first sludge discharge pipe 12 and the second sludge discharge pipe 22 respectively.

[0035] The above embodiments only represent the specific implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A sludge settling system, characterized in that: include: The inner tank body is arranged in the middle of the outer tank body, the inner tank body is respectively connected with a water inlet pipe and a first mud discharge pipe, the water inlet pipe is higher than the first mud discharge pipe, the outer tank body is respectively connected with a water outlet pipe and a second mud discharge pipe, the water outlet pipe is higher than the second mud discharge pipe; The slag discharge trough comprises a first trough body and a second trough body of the same structure, wherein the first trough body is arranged at the inner edge of the top of the inner tank body, and the second trough body is arranged at the inner side of the outer tank body and lower than the first trough body; The scraping mechanism includes a mounting frame, a rotating drive member, a rotating shaft, a connecting column and a scraper plate, wherein the mounting frame is mounted on the top of the outer pool body, the rotating drive member is arranged on the mounting frame, the rotating shaft is connected to the rotating drive member and is vertically arranged in the middle of the outer pool body, the connecting column is arranged perpendicular to the rotating shaft, and the scraper plate includes a first scraper plate and a second scraper plate which are respectively rotatably connected to the connecting column on the top side, the movement trajectory of the first scraper plate is staggered with the first trough body, and the movement trajectory of the second scraper plate is staggered with the second trough body.

2. A sludge settling system according to claim 1, characterized in that: The inner width of the slag discharge trough is greater than the width of the scraper plate, an opening is provided at one end of the scraper plate entering the slag discharge trough, a slag discharge port is provided at the inner bottom of the end of the scraper plate leaving the slag discharge trough, and a slag discharge pipe extending to the outside of the outer pool body is provided at the slag discharge port; the inner bottom surface of the slag discharge trough gradually rises along the direction from the opening to the slag discharge port.

3. A sludge settling system according to claim 1 or 2, characterized in that: A collar is provided on the top side of the first scraper and the top side of the second scraper respectively. A connecting groove matching the collar is provided on the connecting column. The collar is sleeved on the outer side of the connecting groove and rotatably connected to the connecting column.

4. A sludge settling system according to claim 3, characterized in that: The scraper also includes a third scraper and a fourth scraper. The third scraper is arranged at the bottom side of the connecting column between the rotating shaft and the first scraper, and the fourth scraper is arranged at the bottom side of the connecting column between the inner pool body and the second scraper.

5. A sludge settling system according to claim 2, characterized in that: A filter screen is provided at the bottom side of the middle part of the slag discharge pipe.

6. A sludge settling system according to claim 1, characterized in that: Mounting columns are evenly arranged between the inner tank body and the outer tank body.

7. A sludge settling system according to claim 1, characterized in that: The bottoms of the inner pool body and the outer pool body are both conical.

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