Wastewater treatment sedimentation tank

Abstract

The utility model discloses a wastewater treatment sedimentation tank, relates to wastewater treatment, aims to solve the problem that a flow baffle is inconvenient to clean, and adopts the technical scheme that the wastewater treatment sedimentation tank comprises a tank body, a sludge scraper is rotationally connected in the tank body, a water inlet pipe penetrating through the tank body is arranged on a rotating shaft of the sludge scraper, the sludge scraper comprises a maintenance bridge, and the flow baffle is arranged at an outlet of the water inlet pipe. According to the utility model, more sludge is accumulated on the flow baffle plate, people can start the sludge scraper, the sludge scraper drives the cleaning piece to clean the inner circumferential wall of the flow baffle plate, and the sludge scraped by the cleaning piece can be just scraped into the sludge bucket by the started sludge scraper when falling into the bottom wall of the tank body, so that the sludge can be cleaned, and the sludge can be cleaned. Due to the arrangement of the cleaning piece, the inner circumferential wall of the flow baffle can be well cleaned, and the service life of the scraper knife made of stainless steel can be well prolonged.

Description

Technical Field

[0001] The utility model relates to wastewater treatment, and more specifically, to a sedimentation tank for wastewater treatment. Background Art

[0002] Wastewater treatment is to purify wastewater by using physical, chemical and biological methods to achieve wastewater recycling. In the process of wastewater treatment, the treatment tank is an important wastewater treatment device. In the prior art, there are multiple types of treatment tanks, including sedimentation tanks, and the radial flow sedimentation tank is one type of sedimentation tank.

[0003] The radial flow sedimentation tank includes a tank body. An inlet pipe is provided in the middle of the tank body. An effluent weir is provided on the outer edge of the tank body. A sludge scraper that can rotate and clean the bottom wall of the tank body is provided in the middle of the tank body. The inlet pipe coincides with the rotation axis of the sludge scraper. A sludge hopper is opened at the center of the bottom of the tank body. A baffle is provided at the outlet of the inlet pipe to prevent the wastewater flowing out of the inlet pipe from affecting the supernatant. When there is more sludge settlement on the bottom wall of the tank body, people will start the sludge scraper to clean the bottom wall of the tank body and scrape the sludge into the sludge hopper. An inspection bridge for maintenance personnel to walk on is provided on the sludge scraper, and the inspection bridge is usually always exposed above the tank body.

[0004] When there is more sludge accumulation on the baffle, it will affect the functions such as uniform water distribution of the baffle, and people need to clean the baffle. However, since the inspection bridge is located directly above the baffle, it is not convenient to clean the baffle on the inspection bridge. People usually enter the tank body to clean the baffle, which is rather inconvenient.

[0005] Therefore, a new solution needs to be proposed to solve this problem. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide a sedimentation tank for wastewater treatment.

[0007] The above technical purpose of the present utility model is achieved through the following technical solutions: A sedimentation tank for wastewater treatment includes a tank body. A sludge scraper is rotatably connected in the tank body. An inlet pipe passes through the tank body. The sludge scraper includes an inspection bridge exposed above the tank body. The outlet of the inlet pipe is located directly below the inspection bridge. A circular baffle located below the inspection bridge is provided at the outlet of the inlet pipe. A cleaning member for cleaning the baffle is provided on the inlet pipe, and the cleaning member can rotate together with the sludge scraper.

[0008] The present utility model is further provided as: The cleaning member includes a collar sleeved on the inlet pipe and a cleaning plate fixed on the collar. One end of the cleaning plate away from the collar abuts against the inner peripheral wall of the baffle, and the end of the cleaning plate facing away from the bottom wall of the tank body is fixedly connected to the inspection bridge.

[0009] The utility model is further configured as follows: the cleaning plate includes a bottom plate and a scraper detachably connected to the bottom plate, and one end of the scraper abuts against the inner peripheral wall of the baffle plate.

[0010] The utility model is further configured as follows: circular holes are formed in the side wall of the scraper that fits the bottom plate, through holes are formed in the side wall of the bottom plate facing away from the scraper, and the same bolt passes through the through holes and the circular holes.

[0011] The utility model is further configured as follows: the through hole is a countersunk hole.

[0012] The utility model is further configured as follows: the scraper is made of stainless steel.

[0013] In summary, the utility model has the following beneficial effects: Since the baffle plate 5 is continuously washed by water flow for a long time, the sludge accumulation rate on the baffle plate 5 is lower than that at the bottom of the pool body 1. When a large amount of sludge accumulates at the bottom of the pool body 1, people will start the sludge scraper 2. At this time, the sludge scraper 2 drives the cleaning member to clean the inner peripheral wall of the baffle plate 5. When the sludge scraped off by the cleaning member falls onto the bottom wall of the pool body 1, it can just be scraped into the sludge hopper by the sludge scraper 2. The setting of the cleaning member enables the inner peripheral wall of the baffle plate 5 to be cleaned well. The cleaning member is set to be rotatable together with the sludge scraper 2, so that the cleaning member can be better linked with the sludge scraper 2. After the cleaning member scrapes off the sludge on the baffle plate 5, the sludge scraper 2 can timely scrape the sludge into the sludge hopper. In addition, the cleaning member that can rotate together with the sludge scraper 2 also enables people not to install a power source specifically for the cleaning member, reducing the structure of the sedimentation tank and also reducing the cost of the wastewater treatment sedimentation tank preferably. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2 is a partial cross-sectional view of the utility model;

[0016] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0017] In the figure: 1, pool body; 2, sludge scraper; 3, water inlet pipe; 4, maintenance bridge; 5, baffle plate; 6, collar; 7, bottom plate; 8, scraper; 9, circular hole; 10, through hole; 11, bolt; 12, support. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following combines the drawings and embodiments to describe the utility model in detail.

[0019] The wastewater treatment sedimentation tank is as Figure 1 and Figure 2As shown, it includes a tank body 1, in which a scraper 2 is rotatably connected, a water inlet pipe 3 passes through the middle of the bottom surface of the tank body 1, and the scraper 2 includes an inspection bridge 4 exposed at the top of the tank body 1, and the water outlet of the water inlet pipe 3 is located directly below the inspection bridge 4. A support 12 is fixed to the outer edge of the outlet of the water inlet pipe 3, and a swivel seat rotatably connected to the support 12 is fixed to the bottom of the inspection bridge 4. The inspection bridge 4 can rotate together with the scraper 2, and an annular baffle 5 located below the inspection bridge 4 is provided at the outlet of the water inlet pipe 3. A cleaning member for cleaning the baffle 5 is provided on the water inlet pipe 3, and the cleaning member can rotate together with the scraper 2. Since the baffle 5 is flushed by water for a long time, the sludge accumulation speed on the baffle 5 will be lower than the sludge accumulation speed at the bottom of the tank body 1. When a lot of sludge accumulates at the bottom of the pool body 1, people will start the scraper 2. At this time, the scraper 2 drives the cleaning parts to clean the inner wall of the baffle plate 5. When the sludge scraped off by the cleaning parts falls on the bottom wall of the pool body 1, it can be scraped into the mud bucket by the scraper 2. The setting of the cleaning parts allows the inner wall of the baffle plate 5 to be better cleaned. The cleaning parts are set to rotate together with the scraper 2, so that the cleaning parts can be better linked with the scraper 2. After the cleaning parts scrape the sludge on the baffle plate 5, the scraper 2 can scrape the sludge into the mud bucket in time. In addition, the cleaning parts that can rotate with the scraper 2 also make it unnecessary for people to install a power source specifically for the cleaning parts, which not only reduces the structure of the sedimentation tank but also reduces the cost of the sedimentation tank for wastewater treatment.

[0020] like Figure 2 and Figure 3As shown in the figure, the cleaning part includes a collar 6 sleeved on the water inlet pipe 3 and a cleaning plate fixed on the collar 6. One end of the cleaning plate away from the collar 6 abuts against the inner peripheral wall of the baffle plate 5, and one end of the cleaning plate facing away from the bottom wall of the pond body 1 is fixedly connected to the inspection bridge 4. After people start the sludge scraper 2, the inspection bridge 4 starts to rotate, and drives the cleaning plate fixedly connected to the inspection bridge 4 to rotate along the water inlet pipe 3 together. When the cleaning plate starts to rotate, one end of the cleaning plate that abuts against the inner peripheral wall of the baffle plate 5 will collide with the sludge accumulated on the baffle plate 5. Under the action of this impact, the sludge on the baffle plate 5 can be better separated from the baffle plate 5, so that the cleaning plate can better clean the inner peripheral wall of the baffle plate 5. The cleaning plate includes a bottom plate 7 and a scraper 8 detachably connected to the bottom plate 7. One end of the scraper 8 abuts against the inner peripheral wall of the baffle plate 5, and the width of the scraper 8 is smaller than the width of the bottom plate 7. During the rotation of the bottom plate 7, the scraper 8 will scrape off the sludge on the inner peripheral wall of the baffle plate 5. After the cleaning plate is used multiple times, the part of the scraper 8 that collides with the sludge is prone to wear. People can disassemble the scraper 8 from the bottom plate 7 to replace or maintain the scraper 8. A round hole 9 is opened on the side wall of the scraper 8 that fits the bottom plate 7, and a perforation 10 is opened on the side wall of the bottom plate 7 facing away from the scraper 8. The same bolt 11 passes through the perforation 10 and the round hole 9. When the scraper 8 needs to be repaired or maintained due to wear, the bolt 11 is removed from the round hole 9 and the perforation 10, and then the scraper 8 is separated from the bottom plate 7. After the maintenance is completed, the perforation 10 is aligned with the round hole 9, and then the bolt 11 is passed through the perforation 10 and screwed into the round hole 9. After the bolt 11 completely fixes the scraper 8 on the bottom plate 7, the maintenance of the scraper 8 is completed. The scraper 8 fixed on the bottom plate 7 by the bolt 11 can better ensure the connection stability between the scraper 8 and the bottom plate 7 when the scraper 8 scrapes off the sludge on the inner peripheral wall of the baffle plate 5. The perforation 10 is arranged on the side wall of the bottom plate 7 facing away from the scraper 8, so that when the scraper 8 moves forward, the scraped sludge is not easily introduced into the perforation 10.

[0021] As Figure 2 shown, the perforation 10 is opened at one end of the bottom plate 7 away from the collar 6. The number of the perforations 10 is several, and several perforations 10 are arranged at equal intervals in the height direction of the bottom plate 7. The perforation 10 is a countersunk hole. When the bottom plate 7 drives the scraper 8 to rotate, the scraper 8 collides with the sludge on the baffle plate 5, and this impact will generate a resistance to the scraper 8. The perforation 10 opened at one end of the bottom plate 7 away from the collar 6 can better reduce the lever arm of the resistance to the fixed point of the scraper 8, so as to better reduce the resistance moment generated by this resistance. The perforation 10 is set in the form of a countersunk hole, so that the head of the bolt 11 can better sink into the perforation 10, making the plane of the bottom plate 7 relatively flat. The scraper 8 is made of stainless steel, and stainless steel has good corrosion resistance. The scraper 8 made of stainless steel can better adapt to the working environment of the wastewater treatment sedimentation tank.

[0022] The above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. All technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements should also be regarded as within the protection scope of the present utility model.

Claims

1. Wastewater treatment sedimentation tank, characterized in that: It includes a pond body (1), a sludge scraper (2) is rotatably connected in the pond body (1), a water inlet pipe (3) passes through the pond body (1), the sludge scraper (2) includes a maintenance bridge (4) exposed at the top of the pond body (1), the water outlet of the water inlet pipe (3) is located directly below the maintenance bridge (4), a flow baffle (5) which is annular and located below the maintenance bridge (4) is arranged at the outlet of the water inlet pipe (3), a cleaning member for cleaning the flow baffle (5) is arranged on the water inlet pipe (3), and the cleaning member can rotate together with the sludge scraper (2).

2. The wastewater treatment sedimentation tank according to claim 1, characterized in that: The cleaning member includes a collar (6) sleeved on the water inlet pipe (3) and a cleaning plate fixed on the collar (6), one end of the cleaning plate far away from the collar (6) abuts against the inner peripheral wall of the flow baffle (5), and one end of the cleaning plate facing away from the bottom wall of the pond body (1) is fixedly connected to the maintenance bridge (4).

3. The wastewater treatment sedimentation tank according to claim 2, wherein: The cleaning plate includes a bottom plate (7) and a shovel blade (8) detachably connected to the bottom plate (7), and one end of the shovel blade (8) abuts against the inner peripheral wall of the flow baffle (5).

4. The wastewater treatment sedimentation tank according to claim 3, characterized in that: A round hole (9) is formed in the side wall of the shovel blade (8) that fits with the bottom plate (7), a through hole (10) is formed in the side wall of the bottom plate (7) facing away from the shovel blade (8), and the same bolt (11) passes through the through hole (10) and the round hole (9).

5. The wastewater treatment sedimentation tank according to claim 4, wherein: The through hole (10) is a countersunk hole.

6. The wastewater treatment sedimentation tank according to claim 5, characterized in that: The shovel blade (8) is made of stainless steel.

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