CN211712678U - Closed unpowered air floatation device - Google Patents

Abstract

The utility model discloses an airtight unpowered air supporting device, which comprises a tank body, dissolve the air water releaser, the oil trap, the internal district of intaking is separated in proper order through the baffle in proper order through the jar, the contact zone, the disengagement zone, clear water district and sump oil, the district of intaking, the contact zone, disengagement zone and clear water district top intercommunication, district and contact zone lower part intercommunication intake, upper portion intercommunication in contact zone and the disengagement zone, it sets up in the contact zone bottom to dissolve the air water releaser, the oil trap sets up in the upper portion of contact zone and disengagement zone, the two of oil trap are fixed on the baffle, the bottom of oil trap links to each other with sump oil storehouse through a pipeline that runs through clear water district, the baffle middle part between district and the contact zone of intaking is equipped with a baffle, the baffle. The utility model discloses need not to set up extra mechanical slag extractor, realize unpowered row's sediment, go out water stable in quality of water.

Description

Closed unpowered air floatation device

Technical Field

The utility model belongs to the field of water treatment facilities, concretely relates to airtight unpowered air supporting device.

Background

The air floating device is to introduce air into water in the form of micro-bubbles to make the micro-bubbles and oil (slag) suspended in the water form a water-gas-solid three-phase mixed system, after the oil (slag) is adhered with the bubbles, the oil (slag) floats upwards to the water surface when the density is less than that of the water, and forms a floating oil (slag) layer which is separated from the water. The floating oil (slag) on the upper part of the contact zone of the traditional open type air floating device is separated from oil (slag) water by arranging a mechanical slag scraping device on the upper part, so that the flotation separation effect of air floating is achieved, and the quality of effluent water is clarified.

However, in some special use environments, such as explosion-proof areas, the wastewater contains toxic gas, the used gas-dissolving medium is nitrogen, the nitrogen can be recycled, and the nitrogen can be supplemented only when the gas pressure is insufficient, but the conventional open type air flotation can not achieve the purpose of recycling, so the air flotation is designed into a closed form, but the use environment and conditions are complex, the closed air flotation can not be provided with a mechanical oil (slag) scraping device, and can only be separated by depending on the characteristics of gas, solid and liquid of water, the water quality of the air flotation effluent is unstable, more oil and slag can be contained, and the water quality of the effluent is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an airtight unpowered air supporting device, need not to set up extra mechanical row's sediment equipment, realizes unpowered row's sediment, goes out water stable in quality of water.

In order to achieve the above object, the utility model provides a following technical scheme: a closed unpowered air floating device comprises a tank body, a dissolved air water releaser and an oil collecting tank, wherein the tank body is internally divided into a water inlet area, a contact area, a separation area, a clear water area and an oil collecting bin in sequence by a partition plate, and is characterized in that the water inlet area, the contact area, the separation area and the top of the clear water area are communicated, the lower parts of the water inlet area and the contact area are communicated, the middle upper part of the contact area and the middle upper part of the separation area are communicated, the tank body of the water inlet area is provided with a water inlet, the bottom of the clear water area is provided with a water outlet, the dissolved air water releaser is arranged at the bottom of the contact area, the oil collecting tank is arranged at the upper parts of the contact area and the separation area, two ends of the oil collecting tank are fixed on the partition plate, the bottom of the oil collecting tank is connected with the oil collecting bin through a pipeline penetrating, be equipped with a sleeve valve in the clear water district, its regulation pole stretches out outside the jar body, and the sleeve valve passes through the channel-section steel to be fixed in clear water district bottom, and the inlet tube of sleeve valve bottom passes the baffle and stretches into the disengagement zone, and clear water district bottom is passed through the outer circulating pump of pipe connection jar and is linked to each other with dissolving the gas water releaser, and nitrogen gas entry and nitrogen gas circulation mouth are seted up at the outer jar body top in non-collection oil storehouse, and the nitrogen gas circulation mouth passes through the pipeline and links to each other with dissolving the gas water releaser, and collection oil storehouse bottom. The water pressurization that the circulating pump will clear water district gets into dissolves gas water releaser and nitrogen gas formation and dissolves gas water blowout together, dissolve gas water and form the micro bubble behind the entering jar body, bring oil (sediment) to the surface of water, the pressurized gas water that dissolves touches the baffle and gets into the disengagement zone, make the disengagement zone form the vortex field, thereby make water face oil (sediment) toward the oil trap gathering of central authorities, get into the sump oil storehouse from the sump oil and discharge from the row's cinder notch again, the sleeve valve in the liquid level accessible clear water district of disengagement zone is adjusted, when gas pressure is not enough, from nitrogen gas entry make-up gas.

Furthermore, the bottom of the water inlet area, the bottom of the contact area and the bottom of the separation area are provided with a plurality of sludge discharge openings. The sludge deposited at the bottom of the tank is discharged periodically through a sludge discharge port.

Further, the oil collecting groove is a U-shaped groove.

Furthermore, the tops of two side edges of the oil collecting groove are in a sawtooth shape, and the tops of the sawtooth side edges can reduce water entering the oil collecting groove.

Furthermore, the baffle plate between the water inlet area and the contact area and the baffle plate form an angle of 60-70 degrees, and the best angle is 67.5 degrees.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model realizes unpowered slag discharge without arranging additional mechanical slag discharge equipment, and the dissolved air water released by the dissolved air water releaser is pressurized by the circulating pump to form a cyclone field, so that the oil (slag) is gathered towards the oil collecting tank, the effect of separating the oil (slag) from the water is improved, and the quality of the effluent water is greatly improved; the nitrogen is recycled, so that resources are saved, and the whole container is sealed and can be safely used in some special use environments.

Drawings

Fig. 1 is a schematic structural view of the present invention;

in the figure: 1. a water inlet area; 2. a contact zone; 3. a separation zone; 4. a clear water zone; 5. an oil collection bin; 6. a water inlet; 7. a dissolved gas water releaser; 8. an oil sump; 9. a baffle plate; 10. a water inlet pipe; 11. a sleeve valve; 12. a circulation pump; 13. a slag discharge port; 14. a sludge discharge port; 15. a water outlet; 16. a nitrogen inlet; 17. a nitrogen gas circulation port.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

As shown in figure 1, the closed unpowered air floatation device comprises a tank body, a dissolved air water releaser 7 and an oil collecting tank 8, wherein the tank body is internally divided by a partition plate into a water inlet area 1, a contact area 2, a separation area 3, a clear water area 4 and an oil collecting bin 5 in sequence, the water inlet area 1, the contact area 2, the separation area 3 and the top of the clear water area 4 are communicated, the lower parts of the water inlet area 1 and the contact area 2 are communicated, the middle upper parts of the contact area 2 and the separation area 3 are communicated, the tank body of the water inlet area 1 is provided with a water inlet 6, the bottom of the clear water area 4 is provided with a water outlet 15, the dissolved air water releaser 7 is arranged at the bottom of the contact area 2, the oil collecting tank 8 is arranged at the upper parts of the contact area 2 and the separation area 3, two ends of the oil collecting tank 8 are fixed on the partition plate, the bottom of the, baffle 9 is downward and cover contact zone 2 to one side, leave rivers passageway between baffle 9 end and contact zone 2 and the separation zone 3 between the baffle, be equipped with a sleeve valve 11 in clear water district 4, it is external that its regulation pole stretches out the jar, sleeve valve 11 passes through the channel-section steel to be fixed in clear water district 4 bottoms, the inlet tube 10 of sleeve valve 11 bottom passes the baffle and stretches into separation zone 3, circulating pump 12 outside the pipe connection jar is passed through to clear water district 4 bottoms links to each other with dissolved air water releaser 7, nitrogen gas entry 16 and nitrogen gas circulation mouth 17 are seted up to the outer jar body top in non-oil collecting storehouse 5, nitrogen gas circulation mouth 17 links to each other with dissolved air water releaser 7 through the pipeline, oil collecting storehouse 5 bottom is equipped with a row of cinder notch 13. The water pressurization of clear water district 4 of circulating pump 12 gets into and dissolves gas water releaser 7 and nitrogen gas formation and dissolves gas water and spout together, dissolve gas water and form the micro bubble after getting into the jar body, bring oil (sediment) to the surface of water, pressurized dissolves gas water and touches baffle 9 and gets into disengagement zone 3, make disengagement zone 3 form the vortex field, thereby make water surface oil (sediment) toward the gathering tank 8 gathering of central authorities, get into collection oil bin 5 from gathering tank 8 and discharge from row cinder notch 13 again, the liquid level accessible clear water district 4 of disengagement zone 3 sleeve valve 11 is adjusted, when gas pressure is not enough, from 16 make-up gas in nitrogen gas entry.

The bottom of the water inlet area 1, the contact area 2 and the separation area 3 is provided with a plurality of sludge discharge openings 14, sludge sinking to the bottom of the tank is periodically discharged through the sludge discharge openings 14, the oil collecting tank 8 is a U-shaped tank, the tops of two side edges of the oil collecting tank 8 are in a sawtooth shape, the tops of the side edges of the sawtooth shape can reduce water entering the oil collecting tank 8, and a baffle plate between the water inlet area 1 and the contact area 2 forms an angle of 67.5 degrees with the baffle plate 9.

The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims (6)

1. A closed unpowered air floating device comprises a tank body, a dissolved air water releaser and an oil collecting tank, wherein the tank body is internally divided into a water inlet area, a contact area, a separation area, a clear water area and an oil collecting bin in sequence by a partition plate, and is characterized in that the water inlet area, the contact area, the separation area and the top of the clear water area are communicated, the lower parts of the water inlet area and the contact area are communicated, the middle upper part of the contact area and the middle upper part of the separation area are communicated, the tank body of the water inlet area is provided with a water inlet, the bottom of the clear water area is provided with a water outlet, the dissolved air water releaser is arranged at the bottom of the contact area, the oil collecting tank is arranged at the upper parts of the contact area and the separation area, two ends of the oil collecting tank are fixed on the partition plate, the bottom of the oil collecting tank is connected with the oil collecting bin through a pipeline penetrating, be equipped with a sleeve valve in the clear water district, its regulation pole stretches out outside the jar body, and the sleeve valve passes through the channel-section steel to be fixed in clear water district bottom, and the inlet tube of sleeve valve bottom passes the baffle and stretches into the disengagement zone, and clear water district bottom is passed through the outer circulating pump of pipe connection jar and is linked to each other with dissolving the gas water releaser, and nitrogen gas entry and nitrogen gas circulation mouth are seted up at the outer jar body top in non-collection oil storehouse, and the nitrogen gas circulation mouth passes through the pipeline and links to each other with dissolving the gas water releaser, and collection oil storehouse bottom.

2. The closed unpowered air floating device according to claim 1, wherein the bottom of the water inlet region, the contacting region and the separating region are provided with a plurality of sludge discharge ports.

3. The closed unpowered air flotation device according to claim 1, wherein the oil collection tank is a U-shaped tank.

4. The closed unpowered air-floating device according to claim 3, wherein tops of two sides of the oil collecting tank are serrated.

5. The closed unpowered air flotation device according to claim 1, wherein the partition between the water inlet zone and the contact zone is at an angle of 60-70 degrees to the baffle.

6. The closed unpowered air flotation device according to claim 5, wherein the partition between the water inlet zone and the contact zone is at an angle of 67.5 degrees to the baffle.

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