CN220485491U - An integrated air flotation device for kitchen sewage treatment - Google Patents

Abstract

The utility model discloses an integrated air flotation device for kitchen sewage treatment, which relates to the technical field of sewage treatment and includes: a medicine tank containing flocculant, a mixing box connected to the medicine tank through a first speed regulating valve, and The air flotation chamber connected to the mixing box is provided with a sediment cleaning mechanism under the air flotation chamber, and a bubble generator is provided on the side of the air flotation chamber to inject the generated bubbles into the air flotation chamber. A floating object cleaning mechanism above the air flotation chamber, a control element for controlling the water level in the air flotation chamber, and a controller for controlling the operation of the air flotation integrated device. The air flotation chamber of this utility model is equipped with a filter plate. The filter plate intercepts large pieces of impurities at the bottom and sinks to the bottom to stay in the round tube. Small particles of impurities and oil can pass through the filter plate and combine with the bubbles generated by the bubble generator. When floating and purifying the water, the impurities combined with the bubbles will be sucked away by the floating object cleaning mechanism. Large pieces of impurities can be cleaned and discharged by using the sediment cleaning mechanism.

Description

An integrated air flotation device for kitchen sewage treatment

Technical field

The utility model relates to the technical field of sewage treatment, and specifically relates to an integrated air flotation device for kitchen sewage treatment.

Background technique

Kitchen sewage contains large impurities that are easy to filter, as well as small suspended solids and oil that are difficult to filter directly. The best way to filter small suspended solids and oil is air flotation filtration. The principle of air flotation filtration is to dissolve air in In water, the suspended matter in the water forms flocs under the action of air and floats to the water surface, and then collects foam or scum to achieve the purpose of separating impurities and purifying wastewater. It is mainly divided into two types: dissolved air type air flotation filtration and pressure type air flotation filtration.

The existing air flotation integrated water purification device lacks the cleaning of large impurities and the cleaning of floating impurities.

Utility model content

In view of the shortcomings of the existing technology, the present utility model provides an integrated air flotation device for kitchen sewage treatment to solve the problems raised in the above background technology.

In order to achieve the above objectives, the present utility model is realized through the following technical solutions: an air flotation integrated device for kitchen sewage treatment, including: a medicine tank containing a flocculant, and the medicine tank passes through a first speed regulating valve A connected mixing box, an air flotation chamber connected to the mixing box, a sediment cleaning mechanism located under the air flotation chamber, and a sediment cleaning mechanism located on the side of the air flotation chamber that injects generated bubbles into the air flotation chamber. A bubble generator, a floating object cleaning mechanism located above the air flotation chamber, a control element for controlling the water level in the air flotation chamber, and a controller for controlling the operation of the air flotation integrated device.

Preferably, a spiral stirring paddle is provided inside the mixing box, and the spiral stirring paddle is provided with a first transmission shaft that passes through the mixing box. The first transmission shaft is connected to a first reducer, and the first transmission shaft is connected to a first reducer. The reducer is connected to the first servo motor.

Preferably, the lower side of the side wall of the mixing box is provided with an outlet leading to the air flotation chamber, the air flotation chamber is provided with a filter plate above the outlet, and the bottom of the air flotation chamber is Leading to the sediment cleaning mechanism.

Preferably, the cross section of the bottom is an inverted trapezoid, and the sediment cleaning mechanism includes a circular tube with a side wall connected to the bottom, a spiral transport shaft located inside the circular tube, and a spiral transport shaft located outside the circular tube. A second servo motor drives the spiral transport shaft to rotate, the second servo motor is equipped with a second reducer, and a drain valve is provided below the side of the circular tube.

Preferably, the bubble generator includes a first water outlet provided on the side wall of the air flotation chamber and located above the filter plate, a water pump with a water pumping end connected to the first water outlet, and the first water outlet. A water injection pipe is connected to the water outlet end of the water pump; the water injection pipe is provided with one or more water injection ports, and the water injection port is provided with a bubble injection pipe leading to the air flotation chamber; the bubble generator includes a The bubble injection tube injects air into the air pump.

Preferably, the bubble injection tube is a venturi tube, and an air tube connected to the air pump is provided on the side of the throat of the venturi tube.

Preferably, a water inlet is provided on the side wall of the air flotation chamber above the first water outlet, and a second water inlet is provided at the center between the center point of the water inlet and the center point of the first water outlet. A transmission shaft, one end of the second transmission shaft is located in the air flotation chamber and can cover the filter disc of the water inlet and the first water outlet, and the other end of the second transmission shaft is provided with a driving The filter disc is rotated by a motor, and the water injection pipe is provided with a branch pipe connected to the water inlet.

Preferably, the floating object cleaning mechanism includes a storage box located on the side of the air flotation chamber, a slurry pump with an outlet end connected to the storage box, and a suction box connected with the inlet end of the slurry pump; The suction box is located in the upper opening of the air flotation chamber. The bottom of the suction box is provided with a plurality of through holes. The upper part of the suction box is provided with a cover plate to detachably fix the suction box to the air flotation chamber. Inside the opening at the upper end of the chamber.

Preferably, the control element includes: a drainage pipe provided on the side wall of the air flotation chamber, a second speed regulating valve provided on the drainage pipe, a first liquid valve for detecting the water level in the air flotation chamber. level sensor; the first liquid level sensor, the second speed regulating valve and the controller are electrically connected.

Preferably, the mixing box is provided with a water inlet pipe, the water inlet pipe is provided with a flow sensor, the flow sensor is electrically connected to the controller, and the first speed regulating valve is electrically connected to the controller. .

Compared with the existing technology, this utility model has the following beneficial effects:

1. The air flotation chamber of this integrated air flotation device for kitchen sewage treatment is equipped with a filter plate. The filter plate intercepts large impurities at the bottom and sinks to the bottom to remain in the round tube. Small particles of impurities and oil can pass through. The filter plate air combines with the bubbles generated by the bubble generator to float. During the purification of the water body, the impurities combined with the bubbles will be sucked away by the floating object cleaning mechanism. Large impurities can be drained out of the air flotation chamber by shutting down the machine and using the sediment cleaning mechanism. Clean and discharge; it can not only purify water but also remove impurities.

2. The water inlet pipe of the air flotation integrated device for kitchen sewage treatment is equipped with a flow sensor to detect the amount of sewage inflow. The flow sensor transmits the flow signal to the controller, and the controller sends a signal to control the first speed regulating valve. Match the amount of flocculant added to the amount of sewage water to achieve the best flocculation effect while saving flocculant.

Description of the drawings

Figure 1 is a first isometric view of an integrated air flotation device for kitchen sewage treatment;

Figure 2 is a second isometric view of an integrated air flotation device for kitchen sewage treatment;

Figure 3 is a first cross-sectional view of an integrated air flotation device for kitchen sewage treatment;

Figure 4 is a structural view at point A of the first cross-sectional view;

Figure 5 is a second cross-sectional view of an integrated air flotation device for kitchen sewage treatment.

In the picture: medicine tank 1, first speed control valve 2, mixing box 3, air flotation chamber 4, sediment cleaning mechanism 5, spiral stirring blade 6, first transmission shaft 7, first reducer 8, first servo motor 9. Outlet 10, filter plate 11, round tube 12, screw conveyor shaft 13, second servo motor 14, second reducer 15, drain valve 16, first water outlet 17, water pumping end 18, water pump 19, water outlet 20 , water injection pipe 21, water injection port 22, bubble injection pipe 23, air pump 24, water inlet 25, outlet end 26, filter disc 27, motor 28, branch pipe 29, storage tank 30, slurry pump 31, inlet end 32, Suction box 33, through hole 34, cover plate 35, drain pipe 36, second speed regulating valve 37, first liquid level sensor 38, water inlet pipe 39, flow sensor 40, and second liquid level sensor 41.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all implementations. example.

Please refer to Figures 1 to 5. The present utility model provides a technical solution: an air flotation integrated device for kitchen sewage treatment, including: a medicinal tank 1 containing a flocculant, and the medicinal tank 1 passes through The mixing box 3 connected to the first speed regulating valve 2, the air flotation chamber 4 connected to the mixing box 3, the sediment cleaning mechanism 5 located under the air flotation chamber 4, and the sediment cleaning mechanism 5 located under the air flotation chamber 4. A bubble generator that injects generated bubbles into the air flotation chamber 4 from the side, a floating object cleaning mechanism provided above the air flotation chamber 4, and a control element for controlling the water level in the air flotation chamber 4, and a controller that controls the operation of the air flotation integrated device. The medicine tank 1 is used to add flocculant to the mixing box 3. The mixing box 3 stirs the flocculant and sewage to fully accelerate the flocculation process. The air flotation chamber 4 is a water purification space. The sediment cleaning mechanism 5 is used to clean the bottom of the air flotation chamber 4. Precipitating impurities, the bubble generator generates fine bubbles that combine with suspended particles and oil dirt, and drive the suspended particles and oil dirt to float. The floating object cleaning mechanism absorbs the floating suspended particles and oil dirt, and the control element maintains the water level in the flotation chamber 4 to allow the floating objects to float. The cleaning mechanism can pick up suspended particles and oil.

The inside of the mixing box 3 is provided with a spiral stirring paddle 6. The spiral stirring paddle 6 is provided with a first transmission shaft 7 that passes through the mixing box 3. The first transmission shaft 7 is connected to a first reducer 8. The first reducer 8 is connected to the first servo motor 9 . The first servo motor 9 drives the spiral stirring paddle 6 to mix the flocculant and sewage.

The lower side of the side wall of the mixing box 3 is provided with an outlet 10 leading to the air flotation chamber 4. The air flotation chamber 4 is provided with a filter plate 11 above the outlet 10. The air flotation chamber 4 is provided with a filter plate 11 above the outlet 10. The bottom of the chamber 4 leads to said sediment cleaning mechanism 5 . The filter plate 11 separates the air flotation chamber 4 into upper and lower parts. The filter plate 11 intercepts large pieces of impurities in the lower part. After sedimentation, the sediment cleaning mechanism 5 cleans and transports them out of the air flotation chamber 4. Small suspended matter and oil dirt pass through the filter. The fine bubbles generated by the bubble generator on the plate 11 combine with the suspended particles and oil dirt, and drive the suspended particles and oil dirt to float up and be sucked away by the floating object cleaning mechanism.

The cross section of the bottom is an inverted trapezoid. The sediment cleaning mechanism 5 includes a circular tube 12 with a side wall connected to the bottom. A spiral transport shaft 13 is provided in the circular tube 12. The second servo motor 14 outside the tube 12 drives the spiral transport shaft 13 to rotate. The second servo motor 14 is equipped with a second reducer 15. A drain valve 16 is provided below the side of the circular tube 12. The shape of the bottom is conducive to the sediment falling and entering the circular tube 12. After the air flotation chamber 4 is drained, the second servo motor 14 is started to drive the spiral transport shaft 13 to rotate to discharge the sediment from the drain valve 16.

The bubble generator includes a first water outlet 17 located on the side wall of the air flotation chamber 4 and above the filter plate 11 , and a water pump 19 with a water pumping end 18 connected to the first water outlet 17 , a water injection pipe 21 connected to the water outlet end 20 of the water pump 19; the water injection pipe 21 is provided with one or more water injection ports 22, and the water injection ports 22 are provided with a water injection port leading to the air flotation chamber 4. Bubble injection tube 23; the bubble generator includes an air pump 24 that injects air into the bubble injection tube 23. The water pump 19 draws the water in the air flotation chamber 4 from the first water outlet 17 into the water injection pipe 21, and then injects it from the water injection port 22 into the bubble injection pipe 23 to mix with the air pumped by the air pump 24 to generate bubbles, and then spray the bubbles to the air flotation pipe. Room 4. When the number of bubble injection tubes 23 is multiple, the air outlet tube of the air pump 24 also has a corresponding number of branch air tubes.

The bubble injection tube 23 is a venturi tube, and an air tube connected to the air pump 24 is provided on the side of the throat of the venturi tube. Bubble generation is based on the Venturi principle to mix gas and liquid to produce fine, small bubbles.

A water inlet 25 is provided on the side wall of the air flotation chamber 4 above the first water outlet 17 . The center point of the water inlet 25 and the center point of the first water outlet 17 are provided with a water inlet 25 . A second transmission shaft. One end of the second transmission shaft is located in the air flotation chamber 4 and can cover the filter disk 27 of the water inlet 25 and the first water outlet 17. The second transmission shaft The other end of the shaft is provided with a motor 28 that drives the filter disk 27 to rotate. The water injection pipe 21 is provided with a branch pipe 29 connected to the water inlet 25 . The branch pipe 29 draws water from the water injection pipe 21 and impacts the filter disc 27 from the water inlet 25. The filter disc 27 is provided with fine holes for filtering out impurities to avoid clogging of the venturi tube. The motor 28 passes through the second The transmission shaft drives the filter disc 27 to rotate, allowing the water flow in the branch pipe 29 to continuously flush the fine holes to prevent the holes from being blocked, causing difficulty in pumping water by the water pump 19.

The floating object cleaning mechanism includes a storage box 30 located on the side of the air flotation chamber 4, a slurry pump 31 with an outlet end 26 connected to the storage box 30, and a slurry pump 31 connected with the inlet end 32 of the slurry pump 31. Suction box 33; the suction box 33 is located in the upper opening of the air flotation chamber 4. The bottom of the suction box 33 is provided with a plurality of through holes 34. The upper part of the suction box 33 is provided with a cover 35 to seal the suction box 33. The suction box 33 is detachably fixed in the upper opening of the air flotation chamber 4. The fixing method is: the suction box 33 is connected to the bottom surface of the cover plate 35 through screws, and the cover plate 35 is connected to the edge of the upper end opening of the air flotation chamber 4 through screws. connect. The control components include: a drain pipe 36 provided on the side wall of the air flotation chamber 4, a second speed regulating valve 37 provided on the drain pipe 36, and a valve for detecting the water level in the air flotation chamber 4. The first liquid level sensor 38; the first liquid level sensor 38, the second speed regulating valve 37 and the controller are electrically connected. The first liquid level sensor 38 is used to detect the water level in the air flotation chamber 4. The set water level is in contact with the lower surface of the suction box 33. If the water level is lower than the set value, the controller sends a signal to the second speed regulating valve 37 to reduce the drain pipe 36. The drainage volume allows the water level to rise to the set value. If the water level exceeds the set value, the controller sends a signal to the second speed regulating valve 37 to increase the drainage volume of the drainage pipe 36 to allow the water level to drop. The first liquid level sensor 38 in this embodiment is set up using the connector principle. An upward vertical water pipe is set outside the air flotation chamber 4. The bottom of the water pipe is connected to the air flotation chamber 4. The first liquid level sensor 38 is set in the water In the tube, the measurement height of the first liquid level sensor 38 exceeds the lower bottom surface of the suction box 33 . The cover plate 35 and the suction box 33 are made of transparent material and are used to observe the accumulation of floating objects.

The mixing box 3 is provided with a water inlet pipe 39. The water inlet pipe 39 is provided with a flow sensor 40. The flow sensor 40 is electrically connected to the controller. The first speed regulating valve 2 is connected to the controller. Electrical connection. The flow sensor 40 detects the amount of sewage incoming water. The flow sensor 40 transmits the flow signal to the controller. The controller sends a signal to control the first speed regulating valve 2 so that the amount of flocculant added matches the amount of sewage incoming water and saves money. While using flocculants, the best flocculation effect can be achieved. In addition, a second liquid level sensor 41 is provided in the medicine tank 1, and the second liquid level sensor 41 is also electrically connected to the controller.

In this embodiment, the controller is an STM32 microcontroller, and the STM32 microcontroller is also connected to a display and a control panel. Through the control panel, you can check the remaining amount of flocculant, check the water level in the air flotation chamber 4, control the start of the first servo motor 9, open and close the bubble generator and floating object cleaning mechanism, and control the start of the first servo motor 9 and stop.

When using the utility model's air flotation integrated device for kitchen sewage treatment:

The sewage enters the mixing tank 3 from the water inlet pipe 39. The flow sensor 40 detects the amount of incoming sewage. The flow sensor 40 transmits the flow signal to the controller. The controller sends a signal to control the first speed regulating valve 2 to adjust the amount of flocculant added. It is suitable for the amount of sewage inflow. At the same time, the first servo motor 9 is started through the control panel to drive the spiral stirring paddle 6 to rotate to mix the flocculant and sewage. The sewage flows from the outlet 10 to the air flotation chamber 4, and the filter plate 11 intercepts large pieces of impurities in the air flotation chamber 4. The lower part of the air flotation chamber 4 is cleaned and transported out of the air flotation chamber 4 by the sediment cleaning mechanism 5 after sedimentation. The fine suspended solids and oil dirt pass through the filter plate 11 and are generated by the bubble generator. Fine bubbles combine with the suspended particles and oil dirt, and drive Suspended particles and oily dirt float up and are sucked away by the floating object cleaning mechanism. During this period, the user observes the accumulation amount of impurities on the water surface through the cover plate 35 and starts the slurry pump 31 to suck away the impurities on the water surface. The controller can also be set to suck out the impurities regularly. When cleaning the bottom sediment, it is necessary to block the sewage from entering the mixing box 3 and the air flotation chamber 4, use the drain valve 16 and the drain pipe 36 to drain the accumulated water, and start the second servo motor 14 to drain the sediment from the drain valve 16.

The above are only preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person familiar with the technical field can, within the technical scope disclosed by the present utility model, implement the present utility model according to the present utility model. Novel technical solutions and utility model concepts, including equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims (10)

1. An air-float integrated device for kitchen sewage treatment, characterized by comprising: the device comprises a medicine tank (1) containing a flocculating agent, a stirring tank (3) communicated with the medicine tank (1) through a first speed regulating valve (2), an air floatation chamber (4) communicated with the stirring tank (3), a sediment cleaning mechanism (5) arranged below the air floatation chamber (4), a bubble generator arranged on the side surface of the air floatation chamber (4) and used for jetting generated bubbles into the air floatation chamber (4), a floatation cleaning mechanism arranged above the air floatation chamber (4), a control element used for controlling the water level in the air floatation chamber (4), and a controller used for controlling the operation of the air floatation integrated device.

2. An air flotation integrated device for kitchen sewage treatment according to claim 1, characterized in that a screw stirring paddle (6) is arranged in the stirring tank (3), the screw stirring paddle (6) is provided with a first transmission shaft (7) penetrating out of the stirring tank (3), the first transmission shaft (7) is connected with a first speed reducer (8), and the first speed reducer (8) is connected with a first servo motor (9).

3. An integrated air flotation device for kitchen sewage treatment according to claim 2, characterized in that the underside of the side wall of the stirring tank (3) is provided with an outlet (10) to the air flotation chamber (4), the air flotation chamber (4) is provided with a filter plate (11) at a position above the outlet (10), and the bottom of the air flotation chamber (4) is led to the sediment cleaning mechanism (5).

4. An air-float integrated device for kitchen sewage treatment according to claim 3, wherein the cross section of the bottom is in an inverted trapezoid, the sediment cleaning mechanism (5) comprises a circular tube (12) with a side wall communicated with the bottom, a spiral conveying shaft (13) arranged in the circular tube (12), a second servo motor (14) arranged outside the circular tube (12) and used for driving the spiral conveying shaft (13) to rotate, the second servo motor (14) is provided with a second speed reducer (15), and a blow-down valve (16) is arranged below the side face of the circular tube (12).

5. An integrated air flotation device for kitchen sewage treatment according to claim 3, characterized in that the bubble generator comprises a first water outlet (17) arranged on the side wall of the air flotation chamber (4) and above the filter plate (11), a water pump (19) with a water pumping end (18) connected with the first water outlet (17), and a water injection pipe (21) connected with a water outlet end (20) of the water pump (19); one or more water injection ports (22) are arranged on the water injection pipe (21), and the water injection ports (22) are provided with bubble injection pipes (23) leading into the air floatation chamber (4); the bubble generator includes an air pump (24) injecting air into the bubble jet pipe (23).

6. An integrated air flotation device for kitchen sewage treatment according to claim 5, characterized in that the air bubble jet pipe (23) is a venturi pipe, the side of the throat of which is provided with an air pipe connected to the air pump (24).

7. An integrated air flotation device for kitchen sewage treatment according to claim 5, characterized in that a water inlet (25) is arranged above the first water outlet (17) on the side wall of the air flotation chamber (4), a second transmission shaft is arranged at the center point of the water inlet (25) and the center point of the first water outlet (17), one end of the second transmission shaft is arranged in the air flotation chamber (4) and can cover the water inlet (25) and the filter disc (27) of the first water outlet (17), a motor (28) for driving the filter disc (27) to rotate is arranged at the other end of the second transmission shaft, and a branch pipe (29) is arranged on the water injection pipe (21) and connected with the water inlet (25).

8. An integrated air flotation device for kitchen sewage treatment according to claim 1, characterized in that the float cleaning mechanism comprises a storage tank (30) arranged on the side of the air flotation chamber (4), a slurry pump (31) with an outlet end (26) connected with the storage tank (30), and a suction box (33) connected with an inlet end (32) of the slurry pump (31); the suction box (33) is arranged in an opening at the upper end of the air floatation chamber (4), a plurality of through holes (34) are formed in the bottom of the suction box (33), and a cover plate (35) is arranged on the upper portion of the suction box (33) to detachably fix the suction box (33) in the opening at the upper end of the air floatation chamber (4).

9. An integrated air flotation device for kitchen waste water treatment according to claim 1, wherein the control element comprises: a drain pipe (36) provided on a side wall of the air floatation chamber (4), a second speed regulating valve (37) provided on the drain pipe (36), and a first liquid level sensor (38) for detecting a water level in the air floatation chamber (4); the first liquid level sensor (38) and the second speed regulating valve (37) are electrically connected with the controller.

10. An integrated air flotation device for kitchen sewage treatment according to claim 1, characterized in that the stirring tank (3) is provided with a water inlet pipe (39), the water inlet pipe (39) is provided with a flow sensor (40), the flow sensor (40) is electrically connected with the controller, and the first speed regulating valve (2) is electrically connected with the controller.