Inclined plate sedimentation tank with automatic cleaning function

Abstract

The utility model discloses an inclined plate sedimentation tank with an automatic cleaning function, which adopts the technical scheme that the inclined plate sedimentation tank comprises a tank body and inclined plates, a plurality of inclined plates are arranged in the tank body at intervals, an external washing source is arranged above the tank body and is connected with a backwashing mechanism, the backwashing mechanism comprises a square frame pipe, a horizontal pipe and a vertical pipe, and the square frame pipe is connected with the horizontal pipe. The square frame pipe and the horizontal pipe are both provided with back washing holes, the directions of the back washing holes are all aligned with the surface of the inclined plate, and a valve is arranged on the vertical pipe. The device has the beneficial effects that (1) the device can effectively remove sludge attached to the inclined plate, the problem of blockage of the inclined plate sedimentation tank is well solved, the working efficiency of the inclined plate sedimentation tank is improved, and the effluent quality is improved; (2) according to the device, the maintenance and management cost of the inclined plate sedimentation tank is reduced, the workload is reduced, moss attached to the inclined plate is reduced, and the service life of the inclined plate sedimentation tank is also prolonged; and (3) the device is low in manufacturing cost, convenient to operate, suitable for modification of most inclined plate sedimentation tanks and wide in application range.

Description

Technical Field

[0001] The utility model belongs to the technical field of maintenance of inclined plate sedimentation tanks, in particular to an inclined plate sedimentation tank with an automatic cleaning function. Background Art

[0002] In water supply and sewage treatment systems, the use of inclined plate (tube) sedimentation tanks is an advanced water treatment technology. Based on the Hazen submerged tank theory, the sedimentation tank is divided into n layers horizontally, which can increase the treatment capacity by n times. It has the advantages of high effluent quality, mature technology, high removal rate, short residence time, and small footprint. Therefore, it is often used in:

[0003] 1. When the existing sewage treatment plants tap their potential or expand their treatment capacity;

[0004] 2. When the sewage treatment plant is limited by its floor space, it can be used as a primary sedimentation tank;

[0005] 3 In the high-efficiency sedimentation tank of the tertiary treatment of the sewage treatment plant.

[0006] However, the existing inclined plate sedimentation pond system has the following defects:

[0007] 1. Inclined plate is easily blocked

[0008] Since the sludge has a certain viscosity, some of the sludge will adhere to the surface of the inclined plate. If it is not cleaned in time, more and more sludge will be attached, which will easily clog the inclined plate, reduce the working efficiency of the inclined plate, and affect the water quality of the effluent.

[0009] 2. The inclined plate consumes more materials and needs to be replaced after aging, which is very expensive.

[0010] Inclined plates are typically made of polymer materials, and the influent often contains corrosive coagulants, which can be corrosive to the materials. Furthermore, in areas with ample visible light, moss tends to grow on the inclined tube sedimentation tank, accelerating corrosion of the tube material. Summary of the Invention

[0011] In response to the problems in the above-mentioned prior art, the utility model provides an inclined plate sedimentation tank with an automatic cleaning function, and its technical solution is: it includes a tank body and an inclined plate, a plurality of inclined plates are arranged at intervals inside the tank body, an external flushing source is arranged above the tank body, and the external flushing source is connected to the backwashing mechanism. The backwashing mechanism includes a square pipe, a horizontal pipe and a vertical pipe, and backwash holes are provided on the square pipe and the horizontal pipe. The directions of the backwash holes are all aligned with the surface of the inclined plate, and a valve is provided on the vertical pipe.

[0012] As a preferred solution, the external flushing source is connected to the vertical pipe, and the vertical pipe is connected to the horizontal pipe and the square pipe.

[0013] As a preferred solution, the interval between the backwash holes is 100-200mm, and the diameter is 3-10mm.

[0014] As a preferred solution, the horizontal pipe is located below the inclined plate, and the distance between the horizontal pipe and the inclined plate is 100-200mm.

[0015] As a preferred solution, the square frame pipe is arranged at the periphery of the inclined plate.

[0016] As a preferred solution, the valve is controlled by a PLC control system or manually.

[0017] As a preferred solution, the air pressure of the external washing source is higher than 4.0kgf / cm 2 , and the water pressure of the water source is higher than 2.5kgf / cm 2 .

[0018] As a preferred solution, the valve is a pneumatic valve or an electric valve.

[0019] The beneficial effects of the present application are as follows:

[0020] (1) The device can effectively remove the sludge attached to the inclined plate by setting the periodic aeration cleaning of the inclined plate sedimentation tank through the PLC control system or manually, and can solve the problem of the inclined plate sedimentation tank blockage, improve the working efficiency of the inclined plate sedimentation tank, and improve the water quality;

[0021] (2) The device reduces the maintenance and management cost of the inclined plate sedimentation tank, reduces the workload, reduces the algae attached to the inclined plate, and improves the service life of the inclined plate sedimentation tank;

[0022] (3) Compared with mechanical sludge removal or manual sludge removal, the device is cheap, easy to operate, suitable for the transformation of most inclined plate sedimentation tanks at present, and has a wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a top view of the present application.

[0024] Figure 2 is Figure 1 a structural schematic view of A-A view.

[0025] In the figure: 1, tank body; 2, inclined plate; 3, backwash mechanism; 301, square frame pipe; 302, horizontal pipe; 303, vertical pipe; 304, backwash hole; 4, external washing source; 5, valve; 6, PLC control system. DETAILED DESCRIPTION

[0026] The present application will be further described in detail below according to the drawings and specific embodiments.

[0027] Example 1

[0028] like Figure 1-2 The inclined plate sedimentation tank shown has an automatic cleaning function, including a tank body 1 and an inclined plate 2. Several inclined plates 2 are arranged at intervals inside the tank body 1. An external flushing source 4 is arranged above the tank body 1, and the external flushing source 4 is connected to a flushing mechanism 3. The backwashing mechanism 3 includes a square pipe 301, a horizontal pipe 302 and a vertical pipe 303. Backwash holes 304 are provided on the square pipe 301 and the horizontal pipe 302. The backwash holes 304 are all aligned with the surface of the inclined plate 2. A valve 5 is provided on the vertical pipe 303.

[0029] Furthermore, the external flushing source 4 is connected to the vertical pipe 303 , and the vertical pipe 303 is connected to the horizontal pipe 302 and the square pipe 301 .

[0030] Furthermore, the intervals between the backwash holes 304 are 100-200 mm, and the diameters thereof are 3-10 mm.

[0031] Furthermore, the horizontal tube 302 is located below the inclined plate 2, and the distance between the horizontal tube 302 and the inclined plate 2 is 100-200 mm.

[0032] Furthermore, the square frame tube 301 is arranged on the periphery of the inclined plate 2 .

[0033] Furthermore, the valve 5 is opened and closed by a PLC control system 6 or manually opened and closed.

[0034] Furthermore, the air pressure of the external flushing source 4 must be higher than 4.0 kgf / cm 2 , the water pressure of the water source must be higher than 2.5kgf / cm 2 .

[0035] The working process of the above inclined plate sedimentation tank is as follows:

[0036] When a lot of sludge is deposited on the surface of the inclined plate 2 in the tank body 1 during operation, the valve 5 is opened, and the external flushing source 4 enters the backwashing mechanism 3. Under the action of external pressure, the gas (water flow) enters the square pipe 301 and the horizontal pipe 302 at the bottom of the tank body 1 from the vertical pipe 303, and enters the inclined plate 2 through the backwashing hole 304. During the process of rising on the inclined plate 2, the gas (water flow) contacts and rubs against the sludge deposited on the inclined plate 2, and carries the sludge out of the inclined plate 2, thereby achieving cleaning of the inclined plate 2.

[0037] According to actual conditions, the cleaning intensity and frequency can be set in the PLC control system 6 according to the amount of sludge deposited on the surface of the inclined plate 2.

Claims

1. A sloping plate sedimentation tank with an automatic cleaning function, comprising a tank body (1) and sloping plates (2), wherein a plurality of sloping plates (2) are arranged at intervals inside the tank body (1), characterized in that: An external flushing source (4) is provided above the pool body (1), and the external flushing source (4) is connected to a backwashing mechanism (3). The backwashing mechanism (3) comprises a square frame pipe (301), a horizontal pipe (302), and a vertical pipe (303). Backwashing holes (304) are provided on the square frame pipe (301) and the horizontal pipe (302). The directions of the backwashing holes (304) are both aligned with the surface of the inclined plate (2). A valve (5) is provided on the vertical pipe (303).

2. The inclined plate sedimentation tank with automatic cleaning function according to claim 1, characterized in that: The external flushing source (4) is connected to the vertical pipe (303), and the vertical pipe (303) is connected to the horizontal pipe (302) and the square pipe (301).

3. The inclined plate sedimentation tank with automatic cleaning function according to claim 1, characterized in that: The backwash holes (304) are spaced 100-200 mm apart and have a diameter of 3-10 mm.

4. The inclined plate sedimentation tank with automatic cleaning function according to claim 1, characterized in that: The horizontal tube (302) is located below the inclined plate (2), and the distance between the horizontal tube (302) and the inclined plate (2) is 100-200 mm.

5. The inclined plate sedimentation tank with automatic cleaning function according to claim 1, characterized in that: The square frame tube (301) is arranged on the periphery of the inclined plate (2).

6. The inclined plate sedimentation tank with automatic cleaning function according to claim 1, characterized in that: The valve (5) is opened and closed by a PLC control system (6) or manually opened and closed.

7. The inclined plate sedimentation tank with automatic cleaning function according to claim 1, characterized in that: The external flushing source (4) is an air source or a water source, and the air pressure of the air source must be higher than 4.0 kgf / cm 2 , the water pressure of the water source must be higher than 2.5 kgf / cm 2 .

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