Sewage treatment air flotation device

Abstract

The utility model provides a sewage treatment air flotation device, and belongs to the technical field of sewage treatment. According to the structure of the device, an outer side air supply pipe and an inner side air supply pipe are connected to a cylinder, an outer side one-way valve and a main filter are installed in the outer side air supply pipe, an inner side one-way valve is installed in the inner side air supply pipe, a containing bin is kept in a treatment tank and connected with the inner side air supply pipe, and the containing bin is connected to a transition pipe through an upper conveying pipe; an auxiliary filter is mounted in the upper conveying pipe; and the transition pipe is connected to the small annular gas distributor and the large annular gas distributor. According to the utility model, a bubble distribution structure is improved, and an air speed short-time control mechanism with a pure mechanical structure is designed. The multi-stage annular gas distributor is adopted, so that the gas distribution performance of the multi-stage annular gas distributor is better, and the mass transfer efficiency is improved; and meanwhile, the controllability of the air speed is realized, and the control requirements of part of air floatation treatment processes are met.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment flotation device. Background Art

[0002] Flotation involves introducing or generating a large number of fine bubbles into water, causing them to adhere to impurity flocs and, thanks to buoyancy, to rise to the surface, thereby achieving efficient solid-liquid separation. Existing dynamic flotation devices, using fine bubbles as a medium, rely on the bubbles' oxygenation and lifting properties to separate suspended solids such as sand and grease from wastewater. Therefore, the distribution of microbubbles has a direct impact on treatment effectiveness. Currently, the bubble distribution of conventional flotation devices still needs to be improved, and the mass transfer efficiency between gas and liquid also needs to be enhanced. Summary of the Invention

[0003] The technical problem to be solved by the present invention is how to further improve the bubble distribution and gas-liquid mass transfer efficiency of the air flotation device.

[0004] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0005] A sewage treatment flotation device comprises a treatment tank, an input pipe, an output pipe, a support frame, a driving mechanism, a cylinder, a piston, an outer air supply pipe, a main filter, an outer one-way valve, an inner air supply pipe, a receiving chamber, an inner one-way valve, an upper delivery pipe, an auxiliary filter, a transition pipe, a small annular gas distributor, and a large annular gas distributor; an input pipe and an output pipe are respectively installed in the treatment tank, the support frame is located outside the treatment tank, the driving mechanism is installed on the support frame, the driving mechanism is connected to the piston in the cylinder, and the driving direction of the driving mechanism is parallel to the extension direction of the cylinder, the outer air supply pipe and the inner air supply pipe are connected to the cylinder, the outer one-way valve and the main filter are installed in the outer air supply pipe, the inner one-way valve is installed in the inner air supply pipe, the receiving chamber is maintained in the treatment tank and is connected to the inner air supply pipe, the receiving chamber is connected to the transition pipe through an upper delivery pipe, the auxiliary filter is installed in the upper delivery pipe, and the transition pipe is connected to the small annular gas distributor and the large annular gas distributor.

[0006] Preferably, a stirring mechanism is installed in the treatment tank, and the stirring mechanism is maintained above the small annular gas distributor and the large annular gas distributor.

[0007] Preferably, one end of the transition pipe is connected to the top of the upward delivery pipe, and the other end is folded back downward to be connected to the containing chamber.

[0008] Preferably, the inner air supply pipe extends in a horizontal direction, and a gap is left between the processing tank and the inner air supply pipe.

[0009] Preferably, the driving mechanism is a reciprocating linear motion mechanism, and the motion direction of the driving mechanism is vertical.

[0010] Preferably, a roof is installed on the top of the processing tank, and the roof extends above the support frame and the driving mechanism.

[0011] In the structure of the utility model, the treatment tank is the air flotation treatment space; the input pipe and the output pipe are used to input and output sewage respectively; the support frame is used to install the driving mechanism, thereby driving the piston to move in the cylinder, and then

[0012] The air supply speed can be controlled intermittently, and a large number of bubbles can be delivered in a short time; the outer air supply pipe and the inner air supply pipe

[0013] The outer one-way valve and the inner one-way valve are respectively installed in the outer air supply pipe and the inner air supply pipe.

[0014] It plays a check function in the air pipe to avoid backflow caused by piston movement; the main filter plays an initial role in the outer air supply pipe.

[0015] The upper pipe guides the gas from the holding chamber into the transition pipe; the auxiliary filter further filters the gas;

[0016] The annular gas distributor and the large annular gas distributor provide multi-stage gas distribution, so that the bubbles are

[0017] Distribute as much as possible in the tank.

[0018] The utility model discloses a sewage treatment flotation device. This device improves the bubble distribution structure and

[0019] A purely mechanical gas velocity short-time control mechanism is designed. Through the multi-stage annular gas distributor, this practical

[0020] The new gas distribution is better, thus improving the mass transfer efficiency; at the same time, the gas velocity is controllable to meet

[0021] Control requirements for some flotation treatment processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an internal diagram of the present utility model;

[0023] Figure 2 This is an external view of the inner air supply pipe, storage chamber, transition pipe and other components;

[0024] Figure 3 This is an internal diagram of the inner air supply pipe, storage chamber, upper delivery pipe and other components;

[0025] in:

[0026] 1. Processing tank 2. Input pipe 3. Output pipe 4. Support frame

[0027] 5. Driving mechanism 6. Cylinder 7. Piston 8. External air supply pipe

[0028] 9. Main filter 10. External one-way valve 11. Internal air supply pipe 12. Storage chamber

[0029] 13. Inside one-way valve 14. Upward delivery pipe 15. Auxiliary filter 16. Transition pipe

[0030] 17. Small annular gas distributor 18. Large annular gas distributor. DETAILED DESCRIPTION

[0031] The following will describe the specific implementation of the present invention in detail. In order to avoid too many unnecessary details, the well-known structures or functions will not be described in detail in the following embodiments.

[0032] Approximate language used in the text can be used to quantitatively express that the amount of change that can be made without changing the basic function is allowed.

[0033] Unless otherwise defined, the technical and scientific terms used in the following examples have the same meaning as those in this specification.

[0034] The same meaning as commonly understood by those skilled in the art to which the utility model belongs.

[0035] Example 1

[0036] A sewage treatment flotation device, see Figures 1 to 3 , including a processing tank 1, an input pipe 2, an output pipe 3, a support frame 4, a driving mechanism 5, a cylinder 6, a piston 7, an outer air supply pipe 8, a main filter 9, an outer one-way valve 10, an inner air supply pipe 11, a storage bin 12, an inner one-way valve 13, an upper delivery pipe 14, an auxiliary filter 15, a transition pipe 16, a small annular gas distributor 17, and a large annular gas distributor 18; the input pipe 2 and the output pipe 3 are respectively installed in the processing tank 1, the support frame 4 is located outside the processing tank 1, the driving mechanism 5 is installed on the support frame 4, and the driving mechanism 5 is connected to the piston 7 in the cylinder 6. The cylinder 6 is connected, and the driving direction of the driving mechanism 5 is parallel to the extension direction of the cylinder 6. The outer air supply pipe 8 and the inner air supply pipe 11 are connected to the cylinder 6. The outer one-way valve 10 and the main filter 9 are installed in the outer air supply pipe 8. The inner one-way valve 13 is installed in the inner air supply pipe 11. The accommodating chamber 12 is maintained in the treatment tank 1 and is connected to the inner air supply pipe 11. The accommodating chamber 12 is connected to the transition pipe 16 through the upper delivery pipe 14. The auxiliary filter 15 is installed in the upper delivery pipe 14. The transition pipe 16 is connected to a small annular gas distributor 17 and a large annular gas distributor 18.

[0037] Among them, the treatment tank 1 is an air flotation treatment space; the input pipe 2 and the output pipe 3 are used to input and output sewage respectively; the support frame 4 is used to install the driving mechanism 5, thereby driving the piston 7 to move in the cylinder 6, and then the air supply speed can be intermittently controlled, and a large number of bubbles can be delivered in a short time; the outer air supply pipe 8 and the inner air supply pipe 11 are used to supply air to the holding chamber 12; the outer one-way valve 10 and the inner one-way valve 13 respectively play a check role in the outer air supply pipe 8 and the inner air supply pipe 11 to avoid backflow caused by the movement of the piston 7; the main filter 9 plays a primary filtration role in the outer air supply pipe 8; the upper delivery pipe 14 introduces the gas from the holding chamber 12 into the transition pipe 16; the auxiliary filter 15 further filters; the small annular gas distributor 17 and the large annular gas distributor 18 provide multi-stage gas distribution effect, so that the bubbles are distributed as fully as possible in the treatment tank 1.

[0038] Example 2

[0039] A sewage treatment flotation device, see Figures 1 to 3 , including a processing tank 1, an input pipe 2, an output pipe 3, a support frame 4, a driving mechanism 5, a cylinder 6, a piston 7, an outer air supply pipe 8, a main filter 9, an outer one-way valve 10, an inner air supply pipe 11, a storage bin 12, an inner one-way valve 13, an upper delivery pipe 14, an auxiliary filter 15, a transition pipe 16, a small annular gas distributor 17, and a large annular gas distributor 18; the input pipe 2 and the output pipe 3 are respectively installed in the processing tank 1, the support frame 4 is located outside the processing tank 1, the driving mechanism 5 is installed on the support frame 4, and the driving mechanism 5 is connected to the piston 7 in the cylinder 6. The cylinder 6 is connected to the outer air supply pipe 8 and the inner air supply pipe 11. An outer check valve 10 and a main filter 9 are installed in the outer air supply pipe 8. An inner check valve 13 is installed in the inner air supply pipe 11. A holding chamber 12 is held within the treatment tank 1 and connected to the inner air supply pipe 11. The holding chamber 12 is connected to a transition pipe 16 via an ascending pipe 14. A secondary filter 15 is installed in the ascending pipe 14. The transition pipe 16 is connected to a small annular gas distributor 17 and a large annular gas distributor 18. A stirring mechanism is installed within the treatment tank 1, positioned above the small annular gas distributor 17 and the large annular gas distributor 18. One end of the transition pipe 16 is connected to the top of the ascending pipe 14, and the other end is bent downward to connect to the holding chamber 12. The inner air supply pipe 11 extends horizontally, with a gap between the treatment tank 1 and the inner air supply pipe 11. The driving mechanism 5 is a reciprocating linear motion mechanism, and the motion direction of the driving mechanism 5 is vertical. A ceiling is installed on the top of the processing tank 1, and the ceiling extends above the support frame 4 and the driving mechanism 5.

[0040] The above embodiments of the present invention are described in detail, but the above contents are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the scope of application of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A sewage treatment flotation device, characterized in that: The invention comprises a processing tank (1), an input pipe (2), an output pipe (3), a support frame (4), a driving mechanism (5), a cylinder (6), a piston (7), an outer air supply pipe (8), a main filter (9), an outer one-way valve (10), an inner air supply pipe (11), a storage chamber (12), an inner one-way valve (13), an upper delivery pipe (14), an auxiliary filter (15), a transition pipe (16), a small annular gas distributor (17), and a large annular gas distributor (18); the input pipe (2) and the output pipe (3) are respectively installed in the processing tank (1), the support frame (4) is located outside the processing tank (1), the driving mechanism (5) is installed on the support frame (4), and the driving mechanism (5) is connected to the cylinder (6). The cylinder (6) is connected to the piston (7), and the driving direction of the driving mechanism (5) is parallel to the extension direction of the cylinder (6). An outer air supply pipe (8) and an inner air supply pipe (11) are connected to the cylinder (6). An outer one-way valve (10) and a main filter (9) are installed in the outer air supply pipe (8). An inner one-way valve (13) is installed in the inner air supply pipe (11). The accommodating chamber (12) is maintained in the treatment tank (1) and is connected to the inner air supply pipe (11). The accommodating chamber (12) is connected to a transition pipe (16) through an upper delivery pipe (14). A secondary filter (15) is installed in the upper delivery pipe (14). The transition pipe (16) is connected to a small annular gas distributor (17) and a large annular gas distributor (18).

2. A sewage treatment flotation device according to claim 1, characterized in that: A stirring mechanism is installed in the treatment tank (1), and the stirring mechanism is maintained above the small annular gas distributor (17) and the large annular gas distributor (18).

3. A sewage treatment flotation device according to claim 1, characterized in that: One end of the transition pipe (16) is connected to the top of the upward delivery pipe (14), and the other end is folded back downwardly and connected to the accommodating chamber (12).

4. A sewage treatment flotation device according to claim 1, characterized in that: The inner air supply pipe (11) extends in a horizontal direction, and a gap is left between the processing tank (1) and the inner air supply pipe (11).

5. A sewage treatment flotation device according to claim 1, characterized in that: The driving mechanism (5) is a reciprocating linear motion mechanism, and the motion direction of the driving mechanism (5) is vertical.

6. A sewage treatment flotation device according to claim 1, characterized in that: A roof is installed on the top of the processing tank (1), and the roof extends above the support frame (4) and the driving mechanism (5).

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