Device for preventing sludge hardening of primary sedimentation tank

Abstract

The utility model relates to the field of sludge treatment of a sewage treatment plant, in particular to a device for preventing sludge hardening of a primary sedimentation tank. The utility model provides a device for preventing sludge from hardening in a primary sedimentation tank, which can solve the problem of hardening of sludge on the four walls of a sludge hopper, ensure that the sludge can timely slide to the bottom of the sludge hopper, improve the working efficiency of sludge collection and ensure the normal operation of a sludge discharge system. A device for preventing sludge hardening in a primary sedimentation tank comprises the primary sedimentation tank, a transverse plate and the like, and the transverse plate is arranged at the upper part of the primary sedimentation tank. The main body structure of the sludge hopper is made of the stainless steel lining material, and the surface of the stainless steel lining material is polished; high-pressure gas is intermittently provided for the aeration branch pipes through the aeration main pipe, sludge on the four walls of the sludge bucket is washed, and the effects that the problem that the sludge is hardened on the four walls of the sludge bucket can be solved, it is guaranteed that the sludge can slide to the bottom of the sludge bucket in time, the sludge collecting work efficiency is improved, and normal operation of a sludge discharging system is guaranteed are achieved.

Description

Technical Field

[0001] The utility model relates to the field of sludge treatment in sewage treatment plants, in particular to a device for preventing sludge from compacting in primary sedimentation tanks. Background Art

[0002] The primary sedimentation tank refers to a common water treatment structure where flocs are precipitated and removed during the flow of sewage from the inlet to the outlet in a rectangular tank. When sewage enters the primary sedimentation tank, the flow rate decreases rapidly, which greatly reduces the ability of the water flow to carry suspended matter, causing the suspended matter in the sewage to settle under the action of gravity sedimentation and form primary sludge, which is then collected into the sludge hopper by the traction-driven scraper and then discharged through the sludge discharge pipe. The treated sewage is discharged from the upper part of the tank body, thereby achieving the separation of sewage and sludge. The scraper can only scrape the primary sludge to the edge of the sludge hopper. Due to the high viscosity of the sludge, it is difficult for the sludge to slide to the bottom of the sludge hopper under the action of its own gravity. As time goes by, the sludge on the four walls of the sludge hopper cannot flow to the bottom of the sludge discharge pipe in time, causing a large amount of sludge to accumulate and easily become compacted. In addition, the amount of sludge extracted by the bottom sludge discharge pipe is limited, resulting in incomplete sludge discharge from the sludge hopper of the primary sedimentation tank, resulting in low efficiency of sludge collection and affecting the normal operation of the sludge discharge system of the primary sedimentation tank.

[0003] Therefore, a device for preventing sludge from compacting in the primary sedimentation tank has been developed to solve the problem of sludge compaction on the four walls of the sludge hopper, ensure that the sludge can slide to the bottom of the sludge hopper in time, improve the efficiency of sludge collection, and ensure the normal operation of the sludge discharge system. Utility Model Content

[0004] In order to overcome the shortcomings of the existing primary sedimentation tank, the sludge on the four walls of the sludge hopper cannot flow to the bottom sludge discharge pipe in time, is prone to compaction, and the amount of sludge extracted by the bottom sludge discharge pipe is limited, the utility model provides a device for preventing the sludge in the primary sedimentation tank from compacting, which can solve the problem of sludge compaction on the four walls of the sludge hopper, ensure that the sludge can slide to the bottom of the sludge hopper in time, improve the efficiency of sludge collection work, and ensure the normal operation of the sludge discharge system.

[0005] Technical solution: A device for preventing sludge from compacting in a primary sedimentation tank comprises a primary sedimentation tank, a transverse plate, a motor and wheels. A transverse plate is arranged on the upper part of the primary sedimentation tank, the upper sides of the front and rear parts of the transverse plate are connected to motors, the lower sides of the front and rear parts of the transverse plate are rotatably connected to wheels, the wheels are in contact with the primary sedimentation tank, and the output shafts of the motors pass through the transverse plate and are connected to adjacent wheels.

[0006] In addition, it is particularly preferred that it also includes a scraper plate and a scraper plate, a scraper plate is connected to the middle part of the transverse plate, and the lower side of the scraper plate is in contact with the primary sedimentation tank, and the lower sides of the front and rear parts of the transverse plate are connected to the scraper plates, and the scraper plates are in contact with the primary sedimentation tank, and the lower sides of the scraper plates are connected to the scraper plates.

[0007] In addition, it is particularly preferred that it also includes an underwater anti-seepage structure, a sludge hopper and a reinforcement bracket. The underwater anti-seepage structure is connected to the lower side of the left part of the primary sedimentation tank, the front and rear parts of the underwater anti-seepage structure are connected to the sludge hopper, and the lower side of the sludge hopper is connected to multiple reinforcement brackets, and the reinforcement brackets are all connected to the primary sedimentation tank.

[0008] In addition, it is particularly preferred that the inner lining of the sludge hopper is made of stainless steel, and the surface of the material is polished.

[0009] In addition, it is particularly preferred that a sludge discharge pipe is further included, and the lower part of the sludge hopper is connected with a sludge discharge pipe, and the sludge discharge pipe passes through the primary sedimentation tank.

[0010] In addition, it is particularly preferred that it also includes an aeration main pipe, a pipe bracket, an aeration branch pipe, an outlet pipe and a control stop valve. The aeration main pipe is connected to the left rear side of the primary settling tank, the left side of the sludge hopper is connected to the pipe bracket, the pipe brackets are connected to the aeration branch pipes, the aeration branch pipes are connected to the aeration main pipe, the aeration branch pipes are connected to multiple outlet pipes, the outlet pipes are provided with multiple pipe outlet holes, and the rear of the aeration main pipe is rotatably connected to the control stop valve.

[0011] The beneficial effects are as follows: 1. The utility model adopts a sludge hopper main body structure composed of a stainless steel lining material, and the surface of the material is polished; the aeration main pipe intermittently provides high-pressure gas to the aeration branch pipe to flush the sludge on the four walls of the sludge hopper, thereby solving the problem of sludge compaction on the four walls of the sludge hopper, ensuring that the sludge can slide to the bottom of the sludge hopper in time, improving the efficiency of sludge collection work, and ensuring the normal operation of the sludge discharge system.

[0012] 2. The utility model accelerates sludge settling under the dual effects of the stainless steel lining of the sludge hopper and aeration, so that the angle between the inclined wall of the sludge hopper and the horizontal plane is only 50°, thereby achieving the effect of reducing the overall depth of the primary sedimentation tank and reducing the engineering construction cost of the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 It is a cross-sectional schematic diagram of the first three-dimensional structure of the utility model.

[0015] Figure 3 It is a cross-sectional schematic diagram of the second three-dimensional structure of the utility model.

[0016] Figure 4 It is a schematic cross-sectional view of a local three-dimensional structure of the utility model.

[0017] Among them, the above-mentioned drawings include the following figure marks: 1. primary sedimentation tank, 2. horizontal plate, 3. motor, 4. wheel, 5. mud scraper, 6. slag scraper, 7. underwater anti-seepage structure, 8. sludge hopper, 9. reinforcement bracket, 10. mud discharge pipe, 11. aeration main pipe, 12. pipe bracket, 13. aeration branch pipe, 14. outlet pipe, 15. pipe outlet hole, 16. control stop valve. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0019] A device for preventing sludge from compacting in a primary sedimentation tank, such as Figure 1-Figure 4 As shown, it includes a primary sedimentation tank 1, a transverse plate 2, a motor 3, wheels 4, a scraper plate 5, a scraper plate 6, an underwater anti-seepage structure 7, a sludge bucket 8, a reinforcement bracket 9, a sludge discharge pipe 10, an aeration main pipe 11, a pipe bracket 12, an aeration branch pipe 13, an outlet pipe 14 and a control stop valve 16. A transverse plate 2 is provided on the upper part of the primary sedimentation tank 1, the upper sides of the front and rear parts of the transverse plate 2 are both connected to the motor 3, the lower sides of the front and rear parts of the transverse plate 2 are both rotatably connected to the wheels 4, the wheels 4 are all in contact with the primary sedimentation tank 1, the output shafts of the motor 3 pass through the transverse plate 2 and are connected to the adjacent wheels 4, the middle part of the transverse plate 2 is connected to the scraper plate 5, the lower side of the scraper plate 5 is in contact with the primary sedimentation tank 1, the lower sides of the front and rear parts of the transverse plate 2 are both connected to the scraper plate 6, the scraper plate 6 is in contact with the primary sedimentation tank 1, the lower side of the scraper plate 6 is connected to the scraper plate 5, the left lower part of the primary sedimentation tank 1 The side is connected with an underwater anti-seepage structure 7, and the front and rear parts of the underwater anti-seepage structure 7 are connected with sludge hoppers 8. The lining of the sludge hopper 8 is made of stainless steel, and the surface of the material is polished to facilitate the sludge to slide down. Two reinforcement brackets 9 are connected to the lower side of the sludge hopper 8, and the reinforcement brackets 9 are connected to the primary sedimentation tank 1. A sludge discharge pipe 10 is connected between the lower parts of the sludge hopper 8, and the sludge discharge pipe 10 passes through the primary sedimentation tank 1. An aeration main pipe 11 is connected to the left rear side of the primary sedimentation tank 1. A pipe bracket 12 is connected to the left side of the sludge hopper 8, and an aeration branch pipe 13 is connected to the pipe bracket 12. The aeration branch pipe 13 is connected to the aeration main pipe 11. Sixteen air outlet pipes 14 are connected to the aeration branch pipe 13, and three pipe air outlet holes 15 are opened on the air outlet pipe 14. A control stop valve 16 is rotatably connected to the rear of the aeration main pipe 11.

[0020] When the utility model is used, sewage is first allowed to enter the primary sedimentation tank 1, and suspended matter in the sewage is allowed to settle under the action of gravity sedimentation to form primary sludge. Subsequently, the motor 3 is started to drive the wheel 4 to rotate, so that the cross plate 2 moves, and the scraper plate 5 and the scraper plate 6 move in the primary sedimentation tank 1, so that the scraper plate 5 and the scraper plate 6 scrape the sludge to the sludge bucket 8. The reinforcement bracket 9 is used to enhance the load-bearing and structure of the sludge bucket 8. The underwater anti-seepage structure 7 can prevent the sewage from corroding the reinforcement bracket 9 for a long time. The main structure of the sludge bucket 8 is composed of a stainless steel lining material, and the surface of the material is polished, which reduces the resistance caused by the friction between the sludge and the wall of the sludge bucket 8, reduces the situation where the sludge sticks to the four walls of the sludge bucket 8, and makes the sludge slide to the bottom of the sludge bucket 8 faster. When the sludge enters the sludge bucket 8, the aeration main pipe 11 can be The blower in the blower room of the external sewage treatment plant controls the aeration main pipe 11 to intermittently provide high-pressure gas to the aeration branch pipe 13 by controlling the stop valve 16. The pipe bracket 12 supports the aeration branch pipes 13. Then the high-pressure gas enters the outlet pipe 14 and is ejected through the pipe outlet hole 15, so that the high-pressure gas flushes the sludge on the four walls of the sludge hopper 8, and the sludge is cleaned in time through the bottom sludge discharge pipe 10, thereby solving the problem of sludge compaction on the four walls of the sludge hopper 8, ensuring that the sludge can slide to the bottom of the sludge hopper 8 in time, improving the sludge collection efficiency, and ensuring the normal operation of the sludge discharge system. Under the dual effects of the stainless steel lining of the sludge hopper 8 and aeration, the sludge sedimentation is accelerated, so that the angle between the inclined wall of the sludge hopper 8 and the horizontal plane is only 50°, which reduces the overall depth of the primary sedimentation tank 1 and reduces the engineering construction cost of the tank body.

[0021] It should be understood that this embodiment is only used to illustrate the present invention and is not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A device for preventing sludge compaction in a primary sedimentation tank, characterized in that: The invention comprises a primary sedimentation tank (1), a transverse plate (2), a motor (3) and a wheel (4), wherein the primary sedimentation tank (1) is provided with a transverse plate (2), the upper part of the transverse plate (2) is connected to the motor (3), the lower part of the transverse plate (2) is rotatably connected to the wheel (4), the wheels (4) are in contact with the primary sedimentation tank (1), and the output shaft of the motor (3) passes through the transverse plate (2) and is connected to the adjacent wheel (4); the invention also comprises an underwater anti-seepage structure (7), a sludge hopper (8), an aeration main pipe (11), a pipe support (12), an aeration branch pipe (13), an air outlet pipe (14) and a control stop valve (16), the primary sedimentation tank (1) is provided with a transverse plate (2), the upper part of the front and rear parts of the transverse plate (2) are connected to the motor (3), the lower part of the front and rear parts of the transverse plate (2) are rotatably connected to the wheel (4), the wheels (4) are in contact with the primary sedimentation tank (1), and the output shaft of the motor (3) passes through the transverse plate (2) and is connected to the adjacent wheel (4); the invention also comprises an underwater anti-seepage structure (7), a sludge hopper (8), an aeration main pipe (11), a pipe support (12), an aeration branch pipe (13), an air outlet pipe (14) and a control stop valve (16), The lower left side of the pool (1) is connected to an underwater anti-seepage structure (7), and the front and rear parts of the underwater anti-seepage structure (7) are both connected to a sludge hopper (8). The rear left side of the primary sedimentation tank (1) is connected to an aeration main pipe (11), and the left part of the sludge hopper (8) is connected to a pipe bracket (12). The pipe bracket (12) is connected to an aeration branch pipe (13), and the aeration branch pipe (13) is connected to the aeration main pipe (11). The aeration branch pipe (13) is connected to a plurality of air outlet pipes (14), and the air outlet pipes (14) are provided with a plurality of pipe air outlet holes (15). The rear part of the aeration main pipe (11) is rotatably connected to a control stop valve (16).

2. A device for preventing sludge compaction in a primary sedimentation tank as claimed in claim 1, characterized in that: It also includes a scraper plate (5) and a scraper plate (6), wherein the middle portion of the transverse plate (2) is connected to the scraper plate (5), the lower side of the scraper plate (5) is in contact with the primary sedimentation tank (1), the lower sides of the front and rear portions of the transverse plate (2) are both connected to the scraper plates (6), the scraper plates (6) are in contact with the primary sedimentation tank (1), and the lower sides of the scraper plates (6) are both connected to the scraper plates (5).

3. A device for preventing sludge compaction in a primary sedimentation tank as claimed in claim 2, characterized in that: It also includes a reinforcement bracket (9), and a plurality of reinforcement brackets (9) are connected to the lower side of the sludge hopper (8), and the reinforcement brackets (9) are all connected to the primary sedimentation tank (1).

4. A device for preventing sludge compaction in a primary sedimentation tank as claimed in claim 3, characterized in that: The inner lining of the sludge hopper (8) is made of stainless steel, and the surface of the material is polished.

5. A device for preventing sludge compaction in a primary sedimentation tank as claimed in claim 3, characterized in that: It also includes a mud discharge pipe (10), the lower part of the mud hopper (8) is connected with the mud discharge pipe (10), and the mud discharge pipe (10) passes through the primary sedimentation tank (1).

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