Unit control device
By setting up parallel filters and electric valves on the return water pipe of the airfloating equipment, automatic switching is achieved, solving the problem of blockage of the return water pipe, ensuring the continuous operation of the equipment and the stability of the dissolved gas effect.
Patent Information
- Application Number
- CN202422692998.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-11-06
AI Technical Summary
The return water pipes of airfloating equipment are prone to blockage and lack effective detection methods, which leads to the equipment shutdown and cleaning of the filter, affecting continuous operation.
Two parallel filters are set up on the return water pipe, equipped with a flow meter and an electric valve. The electric valve is switched when the flow rate decreases through the flow meter to realize automatic switching of the filter and ensure continuous operation of the equipment.
The continuous operation of the air float equipment is achieved, the phenomenon of shutdown due to filter clogging is avoided, and the stability of the dissolved gas effect is ensured.
Smart Images
Figure CN223275988U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, in particular to a unit control device. Background Art
[0002] Flotation equipment is currently the most widely used sewage treatment equipment. Flotation equipment is generally composed of a dissolved air tank, a reaction unit, a dissolved air generating unit, a water storage unit, etc. The dissolved air generating unit includes a micro-bubble generator and a return water component. The return water component uses a return water pump to return the water treated by flotation from the water tank to the vicinity of the dissolved air releaser, where it mixes with micro-bubbles to produce flotation. Since the suspended matter in the outlet water of the flotation equipment is about 20 mg / L and also contains some impurities, the return water pipe is prone to blockage after running for a long time. Generally, a filter is added to the inlet of the return water pipe. However, there is currently no equipment specifically used to detect whether the filter of the return water pipe is blocked. The operator can only rely on experience to judge. The equipment needs to be shut down during the cleaning of the filter, affecting the continuous operation of the equipment. Utility Model Content
[0003] In order to solve the problem of blockage of the return water pipeline of the flotation equipment, the utility model provides a unit control device.
[0004] The technical solution provided by the utility model is: a unit control device, including a dissolved air box, a water tank, a reaction unit and a dissolved air generating unit, the return water pump inlet of the dissolved air generating unit is connected to a return water pipe, the other end of the return water pipe is arranged in the water tank, a flow meter is provided on the return water pipe, and two filters are connected in parallel to the front end of the flow meter in the return water pipe, and electric valves are provided at the front and rear ends of each filter;
[0005] The return water pipe enters the water tank vertically from the bottom of the water tank. After entering the water tank, the return water pipe is connected to a buffer tube with a larger diameter through a reducer and reducer. The top of the buffer tube is fixedly connected to the absorption cover. The absorption cover has a cup-shaped structure. The water absorption cover is inverted on the upper part of the buffer tube, and the lower edge of the water absorption cover is lower than the upper end of the buffer tube.
[0006] The water tank is provided with two upper and lower liquid level switches, and the water absorption cover is located below the lower liquid level switch.
[0007] The beneficial effects of the utility model are as follows: two parallel filters are set in the return water pipeline, and the two filters are switched for use. The flow meter and the electric valve are both connected to the control box. When the flow rate of the return water pipeline drops to the set value, the control box switches the switch of the electric valve, and switches the return water to the other filter 5 to continue running, which does not affect the continuous operation of the equipment while ensuring the dissolved air effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Attachment Figure 1 It is a structural diagram of the present utility model.
[0009] In the figure, 1-dissolved air box, 2-water tank, 3-reflux water pump, 4-reflux water pipe, 5-filter, 6-flow meter, 7-electric valve, 8-buffer tube, 9-water absorption hood, 10-reaction unit, 11-dissolved air generating unit, 12-liquid level switch. DETAILED DESCRIPTION
[0010] like Figure 1 As shown, a unit control device includes a dissolved air tank 1, a water tank 2, a reaction unit 10 and a dissolved air generating unit 11. The inlet of the reflux water pump 3 of the dissolved air generating unit 11 is connected to the reflux water pipe 4. The other end of the reflux water pipe 4 is arranged in the water tank 2. The reflux water pipe 4 is provided with a flow meter 6. The reflux water pipe 4 is connected to two filters 5 in parallel at the front end of the flow meter 6. The front and rear ends of each filter 5 are provided with electric valves 7.
[0011] Two parallel filters 5 are set in the return water pipe 4. The two filters 5 are switched for use. The flow meter 6 and the electric valve 7 are both connected to the control box. When the flow of the return water pipe 4 drops to the set value, the control box switches the switch of the electric valve 7 and switches the return water to the other filter 5 for continued operation, which does not affect the continuous operation of the equipment while ensuring the dissolved air effect.
[0012] The return water pipe 4 enters the water tank 2 vertically from the bottom of the water tank 2. After entering the water tank 2, the return water pipe 4 is connected to a buffer tube 8 with an enlarged diameter through a reducer. The top of the buffer tube 8 is fixedly connected to an absorption cover 9. The absorption cover 9 has a cup-shaped structure. The water absorption cover 9 is inverted on the upper part of the buffer tube 8. The lower edge of the water absorption cover 9 is lower than the upper end of the buffer tube 8. The buffer tube 8 with an enlarged diameter reduces the flow rate of water absorption, prevents fine impurities from being carried into the return water pipe 4 by the water flow, reduces the probability of blockage of the filter 5, and prevents impurities settling from top to bottom from falling into the buffer tube 8.
[0013] The water tank 2 is provided with two upper and lower liquid level switches 12 for controlling the liquid level of the water tank 2. The water absorption hood 9 is located below the lower liquid level switch 12. The water absorption hood 9 is below the lowest liquid level of the water tank 2 to ensure that the return water pipe 4 will not be emptied.
Claims
1. A unit control device, comprising a dissolved air box (1), a water tank (2), a reaction unit (10) and a dissolved air generating unit (11), characterized in that: The inlet of the reflux water pump (3) of the dissolved gas generating unit (11) is connected to the reflux water pipe (4), the other end of the reflux water pipe (4) is arranged in the water tank (2), a flow meter (6) is arranged on the reflux water pipe (4), two filters (5) are connected in parallel at the front end of the flow meter (6), and electric valves (7) are arranged at the front and rear ends of each filter (5); The return water pipe (4) enters the water tank (2) vertically upward from the bottom of the water tank (2). After entering the water tank (2), the return water pipe (4) is connected to a buffer pipe (8) with a larger diameter through a reducer. The top of the buffer pipe (8) is fixedly connected to a water absorption cover (9). The water absorption cover (9) has a cup-shaped structure. The water absorption cover (9) is inverted on the upper part of the buffer pipe (8), and the lower edge of the water absorption cover (9) is lower than the upper end of the buffer pipe (8).
2. A unit control device according to claim 1, characterized in that: The water tank (2) is provided with two upper and lower liquid level switches (12), and the water absorption cover (9) is located below the lower liquid level switch (12).