CN209922941U - High-efficient air dissolving device suitable for air supporting technology - Google Patents

Abstract

A high-efficiency air dissolving device suitable for an air floatation process comprises a device main body and a device cover body, wherein the device cover body is covered on the top surface of the device main body, the upper part of the device main body is in a hollow cylindrical shape and is provided with a water inlet, a plurality of groups of toothed grid bars are arranged in the upper part along the circumferential direction, and all tooth sheets of the plurality of groups of toothed grid bars are integrally arranged into a spiral line shape extending along the axial direction of the device main body; the lower part of the device main body is provided with a water outlet, and a plurality of groups of guide plates are arranged in the lower part along the circumferential direction; an exhaust pipe is arranged on the cover body of the device in a penetrating way and extends into the upper part of the device main body. The water flow is guided and cut by mainly adopting a plurality of groups of dentate grid bars, so that the exchange surface area between liquid and gas is increased, the gas dissolving efficiency is improved, the volume of the device is reduced, the quantity of undissolved gas is reduced, and the investment cost and the operation cost are reduced.

Description

High-efficient air dissolving device suitable for air supporting technology

Technical Field

The utility model relates to a technical field of industry, municipal water treatment facilities especially relates to a high-efficient gas device that dissolves suitable for air supporting technology.

Background

Air floatation is often used in industrial and municipal water treatment as part of the treatment process, and the most central equipment in the air floatation process belongs to an air dissolving device.

In the existing gas dissolving technology, due to the surface tension phenomenon, bubbles tend to naturally and rapidly coalesce to form larger bubbles, so that the gas-liquid surface exchange efficiency is limited. Therefore, in order to achieve the required dissolving effect, the gas dissolving device is required to have a large volume, and the gas needs to be repeatedly sprayed into the liquid by the spray head for contact reaction, which finally results in high operation cost. Another solution is to introduce an excess of gas, i.e. a greater amount of gas than can actually be dissolved in the liquid, to increase the surface exchange rate. However, this leads to gas losses, since the excess undissolved gas must be removed in time to avoid the final flooding of the dissolving device with excess gas.

SUMMERY OF THE UTILITY MODEL

To the above problems, the present invention provides a high efficiency air dissolving device suitable for air floatation process.

The purpose of the utility model can be realized by the following technical scheme: a high-efficiency air dissolving device suitable for an air floatation process comprises a device main body and a device cover body, wherein the device cover body is covered on the top surface of the device main body, the device main body and the device cover body form a closed container, the upper part of the device main body is in a vertically arranged hollow cylinder shape, a water inlet is arranged at the upper part of the device main body, a plurality of groups of toothed bars are arranged in the upper part of the device main body along the circumferential direction, each group of toothed bars comprises a bar main body and a plurality of teeth, the bar main body is in a long strip shape and extends along the axial direction, the teeth are uniformly distributed on the bar main body, and all the teeth of the plurality of groups of toothed bars are integrally arranged into a spiral line shape extending along the axial direction of; the lower part of the device main body is provided with a water outlet, a plurality of groups of guide plates are uniformly distributed in the lower part of the device main body along the circumferential direction, each group of guide plates comprises a guide plate main body and a side guide plate, the guide plate main body is arranged on the radial surface of the device main body, and the side guide plate is obliquely and downwards connected to one surface of the guide plate main body; an exhaust pipe penetrates through the device cover body and extends into the upper portion of the device main body.

Further, the lower part of the device body is in a hollow truncated cone shape with a small top and a large bottom. Furthermore, the bottom surface of the device main body is in a spherical curved surface shape, and the outer side of the bottom of the device main body is welded with a support leg.

Furthermore, a plurality of groups of the dentate grid bars are uniformly distributed or connected and arranged at equal intervals in the circumferential direction.

Further, the grid body of the toothed grid is fixed on the inner wall of the device body or a support independent from the inner wall of the device body.

Further, an air inlet is arranged at the upper part of the device main body. Still further, an adjustable float gas flow meter is connected to the gas inlet.

Further, the upper portion of the inside edge of the deflector main body is a bevel edge, the upper end of the bevel edge is far away from the central axis of the deflector main body, the lower end of the bevel edge is close to the central axis of the deflector main body, and the lower portion of the inside edge of the deflector main body is a vertical edge.

Furthermore, a first regulating valve is arranged on the exhaust pipe, and a second regulating valve is arranged at the water outlet. Still further, the first regulating valve is a pneumatic membrane diaphragm regulating valve.

Compared with the prior art, the beneficial effects of the utility model are that: the upper part of the device main body is provided with a plurality of groups of dentate grid bars for guiding and cutting water flow, so that the exchange surface area between liquid and gas is increased; the lower part of the device main body is provided with a plurality of groups of guide plates for regulating the water flow of the spiral motion to a stable water flow state again. The whole device greatly improves the gas dissolving efficiency, reduces the volume of the device, reduces the quantity of undissolved gas and reduces the investment cost and the operation cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of a-a of fig. 1.

Fig. 3 is a cross-sectional view of b-b of fig. 1.

The parts in the figures are numbered as follows:

a water inlet

B air inlet

C water outlet

1 device body

101 upper part of the device body

102 lower part of the device body

103 bottom surface of the device body

2 device cover

3 tooth-shaped grid

301 grate bar main body

302 tooth sheet

4 exhaust pipe

401 excess gas exhaust inlet

5 first regulating valve.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings to make it clear to those skilled in the art how to practice the invention. While the invention has been described in connection with its preferred embodiments, these embodiments are intended to be illustrative, and not to limit the scope of the invention.

Referring to fig. 1, the efficient air dissolving device suitable for the air floatation process comprises a device body 1 and a device cover body 2, wherein the device cover body 2 is covered on the top surface of the device body 1, the device body 1 and the device cover body 2 form a closed container, the upper part 101 of the device body is in a hollow cylinder shape which is vertically arranged, the lower part 102 of the device body is in a hollow truncated cone shape with a small upper part and a large lower part, the bottom surface 103 of the device body is in a spherical curved surface shape, and support legs are welded on the outer side of the bottom of the device body 1.

A water inlet A and an air inlet B are arranged at the upper position of the side surface of the upper part 101 of the device main body; referring to fig. 1 and 2, a plurality of sets of toothed bars 3 are uniformly distributed in the upper portion 101 of the device body along the circumferential direction, each set of toothed bars 3 includes a bar body 301 and a plurality of teeth 302, the bar body 301 is long and fixed on the inner wall of the upper portion 101 of the device body in an axially extending manner, the lower end of the bar body 301 extends to a position close to the lower portion 102 of the device body, the teeth 302 are uniformly distributed on the bar body 301, all the teeth 302 of the plurality of sets of toothed bars 3 are integrally arranged in a spiral shape extending along the axial direction of the device body 1, and the toothed bars 3 function as obstacles for enabling liquid to flow along a spiral path, and simultaneously have the functions of cutting the liquid and increasing the surface area of the liquid.

An exhaust pipe 4 is arranged on the device cover body 2 in a penetrating manner, one part of the exhaust pipe 4 extends in the upper part 101 of the device main body along the central axis of the device main body 1, and the port is used as an excessive gas exhaust inlet 401, the rest part of the exhaust pipe 4 is arranged outside the device main body 1 and is provided with a first regulating valve 5, and the other port of the exhaust pipe 4 is used as an excessive gas exhaust outlet.

A water outlet C is formed in the lower position of the side surface of the lower part 102 of the device main body and connected with a second regulating valve 6; referring to fig. 1 and 3, a plurality of groups of baffles 7 are uniformly distributed in the lower part 102 of the device main body along the circumferential direction, each group of baffles 7 comprises a baffle main body 701 and a side baffle 7027, the baffle main body 701 is arranged on the radial surface of the device main body 1, and the side baffle 7027 is obliquely and downwardly connected to one surface of the baffle main body 701. The upper portion of the inner side edge of the deflector main body 701 is a bevel edge, the upper end of the bevel edge is far away from the central axis of the device main body 1, the lower end of the bevel edge is close to the central axis of the device main body 1, and the lower portion of the inner side edge of the deflector main body 701 is a vertical edge. The guide plate 7 has a flow guiding function on the water flow, so that the water flow is gradually changed into a steady flow state from a turbulent flow state.

In operation, liquid enters the device body 1 from the water inlet a, the liquid flows along the inner wall at a certain speed under the action of centrifugal force to form a liquid thin layer, gas to be dissolved is introduced into the device body 1 from the gas inlet B, and the gas forms a gas bag in the upper part 101 of the device body, and the lower position of the gas bag can be adjusted by adjusting the position of the excess gas exhaust inlet 401. The entering liquid is cut and guided by the dentate grid 3, so that the liquid is fully spread on the inner wall of the upper part 101 of the device main body and flows along a spiral downward route, the liquid surface area is greatly expanded, and the liquid and the gas are fully mixed and dissolved in the upper part 101 of the device main body; and then, the spirally moved water flow is regulated to flow out from the water outlet C again through the action of the guide plate 7.

The first regulating valve 5 and the second regulating valve 6 are used for ensuring that the inside of the device main body 1 is under a certain pressure, and respectively regulating the flow rate of liquid passing through and the discharge amount of gas so as to maintain the liquid level position in the device main body 1 at the excessive gas exhaust inlet 401 of the exhaust pipe 4 all the time.

The toothed bars 3 can be fixed to the inner wall or to a support independent of the inner wall. The toothed bars 3 may be distributed regularly or arranged in a row, may be arranged at an angle or perpendicular to the liquid flow path. The toothed bars 3 may be replaced by plates or other mechanical blocking means, forming a gas environment capable of guiding the liquid to follow a path and dispersing it in the upper part 101 of the device body.

The air inlet B may be provided at any position on the apparatus body 1, in particular above or below the liquid level. If desired, the gas may be introduced into the liquid just upstream of the gas dissolving means. In this case, there is no gas inlet on the apparatus body 1.

The gas inlet B can be connected with an adjustable float gas flowmeter which reduces the gas inlet amount when the liquid level of the gas dissolving device is reduced, and otherwise, increases the gas inlet amount. Alternatively, the first regulating valve 5 can be replaced by a diaphragm (calibrated orifice) or by an automatic valve operating periodically according to the level of liquid in the gas dissolving device.

It should be noted that many variations and modifications of the embodiments of the present invention are possible, which are fully described, and are not limited to the specific examples of the above embodiments. The above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.

Claims (10)

1. The efficient air dissolving device is characterized in that the upper part of the device body is in a vertically arranged hollow cylinder shape, a water inlet is formed in the upper part of the device body, a plurality of groups of toothed bars are circumferentially arranged in the upper part of the device body, each group of toothed bars comprises a bar main body and a plurality of teeth, the bar main body is in a long strip shape and axially extends, the teeth are uniformly distributed on the bar main body, and all the teeth of the plurality of groups of toothed bars are integrally distributed into a spiral line shape extending along the axial direction of the device body; the lower part of the device main body is provided with a water outlet, a plurality of groups of guide plates are uniformly distributed in the lower part of the device main body along the circumferential direction, each group of guide plates comprises a guide plate main body and a side guide plate, the guide plate main body is arranged on the radial surface of the device main body, and the side guide plate is obliquely and downwards connected to one surface of the guide plate main body; an exhaust pipe penetrates through the device cover body and extends into the upper portion of the device main body.

2. The efficient air dissolving device suitable for air floating process as claimed in claim 1, wherein the lower part of said device body is in the shape of a hollow truncated cone with a small top and a large bottom.

3. The efficient air dissolving device suitable for air floating process as claimed in claim 2, wherein the bottom surface of the device body is spherically curved, and the bottom of the device body is welded with support legs.

4. The efficient air dissolving device suitable for air floating process as claimed in claim 1, wherein said plurality of sets of toothed bars are uniformly distributed or connected in a circumferential direction at equal intervals.

5. The efficient air dissolving device suitable for air floating process as claimed in claim 1 or 4, wherein the grid body of said toothed grid is fixed on the inner wall of the device body or on a support independent from the inner wall of the device body.

6. The efficient air dissolving device suitable for air floating process as claimed in claim 1, wherein an air inlet is provided at an upper portion of said device body.

7. The efficient air dissolving device suitable for the air floating process as claimed in claim 6, wherein the air inlet is connected with an adjustable float gas flowmeter.

8. The efficient air dissolving device suitable for the air floatation process according to claim 1, wherein the upper portion of the inner side edge of the deflector body is a bevel edge, the upper end of the bevel edge is far away from the central axis of the deflector body, the lower end of the bevel edge is close to the central axis of the deflector body, and the lower portion of the inner side edge of the deflector body is a vertical edge.

9. The efficient air dissolving device suitable for air floating process as claimed in claim 1, wherein said exhaust pipe is provided with a first regulating valve, and said water outlet is provided with a second regulating valve.

10. The efficient air dissolving device suitable for air floating process as claimed in claim 9, wherein said first adjusting valve is a pneumatic membrane diaphragm adjusting valve.

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