Automatic backwashing device of mechanical stirring clarification tank and mechanical stirring clarification tank using same

Abstract

The utility model discloses an automatic backwashing device for a mechanical stirring clarification tank and the mechanical stirring clarification tank using the automatic backwashing device, belongs to the field of sewage treatment, and solves the problems that the manual labor intensity is higher and the generated water quantity is unstable in the existing inclined pipe cleaning mode. The automatic backwashing device of the mechanical stirring clarification tank comprises an air inlet main pipe, the air inlet main pipe is connected with an air blower, the air inlet main pipe is in a circular ring shape, the air inlet main pipe is connected with a plurality of backwashing air pipes along the circumferential direction, and each backwashing air pipe is connected with a plurality of backwashing branch pipes. The mechanical stirring clarification tank comprises a first reaction chamber, a second reaction chamber and a separation chamber which are sequentially communicated, an inclined pipe is arranged in the separation chamber, a backwashing branch pipe is located at the bottom of the inclined pipe and distributed in the separation chamber, and an air inlet header pipe is located on a top platform of the second reaction chamber. According to the utility model, on-line cleaning of the inclined pipe in the mechanical stirring clarification tank is realized by utilizing air, and the backwashing branch pipes can be arranged in the whole inclined pipe area, so that the washing efficiency is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of sewage treatment, specifically relating to an automatic backwashing device for a mechanically stirred clarifier and a mechanically stirred clarifier using the same. Background Technology

[0002] Mechanically stirred clarifiers are compact, efficient, and flexible water supply and wastewater treatment devices with wide applications, suitable for treating drinking water, industrial, and domestic wastewater. Utilizing shallow pool theory, mechanically stirred clarifiers feature inclined tubes, resulting in high sedimentation efficiency, short retention time, and high effluent quality. However, with increased operating time, the inclined tubes are prone to clogging if not flushed regularly, leading to decreased effluent turbidity.

[0003] Currently, mechanically stirred clarifiers use a method of periodically stopping water flow and manually flushing with high-pressure water after water level drops to clean the inclined tubes. This method is labor-intensive and results in unstable water output. Utility Model Content

[0004] The purpose of this invention is to provide an automatic backwashing device for mechanically stirred clarifiers to solve the problems of high manual labor intensity and unstable water volume caused by existing inclined tube cleaning methods.

[0005] Another objective of this invention is to provide a mechanically stirred clarification tank.

[0006] The technical solution of this utility model is: an automatic backwashing device for a mechanical stirring clarification tank, including an air inlet main pipe, which is connected to a blower. The air inlet main pipe is circular, and multiple backwashing air pipes are connected to the air inlet main pipe along the circumference. Multiple backwashing branch pipes are connected to each backwashing air pipe.

[0007] As a further improvement of this utility model, the backwash branch pipe is provided with two exhaust holes, the angle between the exhaust holes and the vertical direction is 45°, and the two exhaust holes are arranged symmetrically.

[0008] As a further improvement of this utility model, each backflushing air pipe is equipped with an electric regulating valve.

[0009] A mechanically stirred clarifier using the above-mentioned automatic backwashing device includes a first reaction chamber, a second reaction chamber, and a separation chamber connected in sequence, with the separation chamber being annular; the first reaction chamber is connected to a main water inlet pipe; the separation chamber is provided with an inclined tube and a water distribution tank, with the water distribution tank connected to a main water outlet pipe; backwashing branch pipes are located at the bottom of the inclined tubes and distributed in the separation chamber; and the main air inlet pipe is located on the top platform of the second reaction chamber.

[0010] As a further improvement of this utility model, each backflushing air pipe is equipped with an electric regulating valve.

[0011] As a further improvement of this utility model, the electric regulating valve is located on the top platform of the second reaction chamber.

[0012] The beneficial effects of this invention are as follows: This invention utilizes air to achieve online cleaning of the inclined tubes in a mechanically stirred clarifier. Backwash branch pipes can be arranged throughout the entire inclined tube area, ensuring washing efficiency, removing accumulated sludge from the inclined tubes, reducing manual labor, saving costs, reducing turbidity of the effluent, and ensuring stable effluent flow. Each backwash air pipe is equipped with an electric regulating valve, which can be individually controlled, allowing for group online cleaning of the inclined tubes. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0014] Figure 2 This is a top view of the structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the backwash branch pipe in this utility model.

[0016] In the diagram: 1-Separation chamber; 2-Inclined pipe; 3-Collection tank; 4-Backwash air pipe; 5-Backwash branch pipe; 6-Air hole; 7-Electric regulating valve; 8-First reaction chamber; 9-Second reaction chamber; 10-Main water inlet pipe; 11-Main water outlet pipe; 12-Guard railing; 13-Main air inlet pipe. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings.

[0018] like Figure 1-3 As shown, an automatic backwashing device for a mechanically stirred clarifier includes an air inlet main pipe 13, which is connected to a Roots blower. The air inlet main pipe 13 is annular, and multiple backwashing air pipes 4 are connected to the air inlet main pipe 13 along the circumference. Multiple backwashing branch pipes 5 are connected to each backwashing air pipe 4.

[0019] The backwash branch pipe 5 is provided with two exhaust holes 6, the angle between the exhaust holes 6 and the vertical direction is 45°, and the two exhaust holes 6 are arranged symmetrically.

[0020] Each backflushing air pipe 4 is equipped with an electric regulating valve 7.

[0021] A mechanically stirred clarification tank includes a first reaction chamber 8, a second reaction chamber 9, and a separation chamber 1 connected in sequence. The separation chamber 1 is annular. The first reaction chamber 8 and the second reaction chamber 9 are located at the center of the annular separation chamber 1. The first reaction chamber 8 is located below the second reaction chamber 9. A sludge scraper is installed in the first reaction chamber 8, and a stirrer is installed in the second reaction chamber 9. A main water inlet pipe 10 is connected to the upper side of the first reaction chamber 8. An inclined pipe 2 and a water collection tank 3 are installed in the separation chamber 1. The water collection tank 3 is located above the inclined pipe 2 and is connected to a main water outlet pipe 11. The tank is characterized in that: a backwash branch pipe 5 is located at the bottom of the inclined pipe 2 and is distributed in the separation chamber 1; and an air inlet main pipe 13 is located on the top platform of the second reaction chamber 9.

[0022] Each backflushing air pipe 4 is equipped with an electric regulating valve 7.

[0023] The electric regulating valve 7 is located on the top platform of the second reaction chamber 9. The top platform is surrounded by a guardrail 12, and the main air inlet pipe 13 and the electric regulating valve 7 are both located inside the guardrail 12.

[0024] When the turbidity of the effluent from the mechanically stirred clarifier increases, the Roots blower is turned on. Air enters the backwash branch pipe 5 through the main air inlet pipe 13 and the backwash air pipe 4, and is then sprayed out through the air hole 6 to backwash the inclined tube 2. Each backwash air pipe 4 can be individually controlled by an electric regulating valve 7, and the inclined tube 2 can be cleaned online in groups to reduce the cleaning area and ensure the turbidity of the effluent.

Claims

1. An automatic backwashing device for a mechanically stirred clarifier, characterized in that: It includes an intake manifold (13), which is connected to a blower. The intake manifold (13) is circular, and multiple backwash pipes (4) are connected to the intake manifold (13) along the circumference. Multiple backwash branch pipes (5) are connected to each backwash pipe (4).

2. The automatic backwashing device for a mechanically stirred clarifier according to claim 1, characterized in that: The backwash branch pipe (5) is provided with two exhaust holes (6), the angle between the exhaust hole (6) and the vertical direction is 45°, and the two exhaust holes (6) are arranged symmetrically.

3. An automatic backwashing device for a mechanically stirred clarifier according to claim 1 or 2, characterized in that: Each backflushing air pipe (4) is equipped with an electric regulating valve (7).

4. A mechanically stirred clarifier using the automatic backwashing device of the mechanically stirred clarifier according to claim 1 or 2, comprising a first reaction chamber (8), a second reaction chamber (9), and a separation chamber (1) connected in sequence, the separation chamber (1) being annular; the first reaction chamber (8) being connected to a main inlet pipe (10); the separation chamber (1) being provided with an inclined pipe (2) and a water collection tank (3), the water collection tank (3) being connected to a main outlet pipe (11); characterized in that: The backwash branch pipe (5) is located at the bottom of the inclined pipe (2), and the backwash branch pipe (5) is distributed in the separation chamber (1). The main air inlet pipe (13) is located on the top platform of the second reaction chamber (9).

5. A mechanically stirred clarifier according to claim 4, characterized in that: Each backflushing air pipe (4) is equipped with an electric regulating valve (7).

6. A mechanically stirred clarifier according to claim 5, characterized in that: The electric regulating valve (7) is located on the top platform of the second reaction chamber (9).

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