CN212559662U

CN212559662U - Plug flow aeration device and aeration system

Info

Publication number: CN212559662U
Application number: CN202020997647.7U
Authority: CN
Inventors: 周俊强
Original assignee: Jinfeng Environmental Protection Co ltd
Current assignee: DASMART ENVIRONMENTAL TECHNOLOGIES (BEIJING) CO LTD
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-02-19
Anticipated expiration: 2030-06-03

Abstract

The utility model provides a plug flow aeration device and an aeration system, wherein the plug flow aeration device comprises a cylindrical shell, a rotary impeller, an air distributor and a convex thorn, and the cylindrical shell comprises a water inlet pipe section and a water outlet pipe section; the rotating impeller is rotatably arranged on the water inlet pipe section and is provided with at least one rotating blade; the air distributor is fixed on the inner side wall of the water inlet pipe section and can be communicated with the air blower, the air distributor is of a hollow shell structure, and a plurality of through holes are distributed on the shell of the air distributor; the spur is located the delivery pipe section and forms from the inside wall protrusion of cylindric casing, and the spur can be cut the bubble through it once more to make the bubble become littleer, thereby can improve the dissolved oxygen efficiency of water.

Description

Plug flow aeration device and aeration system

Technical Field

The utility model belongs to the technical field of sewage treatment, especially, relate to a plug flow aeration equipment and aeration systems.

Background

With the development of water service, water plants generally adopt A2/O process for sewage treatment, and the process needs to be provided with a large number of aerators for aeration. Traditional aerator sets up at the bottom of the pool, adopts the rubber diaphragm to become tiny bubble with the air dispersion to increase water dissolved oxygen. Meanwhile, a plurality of flow impellers are arranged in the aeration tank, so that the sewage and the sludge are mixed to generate transverse flow impellers, and the sewage and the sludge circulate in the aeration tank. Besides, the aerator can realize the circular flow of the sewage only by matching with the impeller, and the equipment investment is large.

In addition, the traditional aerator is usually applied to river treatment with good water quality, and when the aerator is applied to industrial sewage with high pollutant concentration, the defects of low dissolved oxygen efficiency and poor aeration effect exist.

SUMMERY OF THE UTILITY MODEL

The main purpose of the utility model is to provide a plug flow aeration device to improve the dissolved oxygen efficiency.

To the above purpose, the present invention provides the following technical solutions:

one aspect of the utility model provides a plug flow aeration device, which comprises a cylindrical shell, a rotary impeller, an air distributor and a convex thorn, wherein the cylindrical shell comprises a water inlet pipe section and a water outlet pipe section; the rotating impeller is rotatably arranged on the water inlet pipe section and is provided with at least one rotating blade; the air distributor is fixed on the inner side wall of the water inlet pipe section and can be communicated with an air blower, the air distributor is of a hollow shell structure, and a plurality of through holes are distributed on a shell of the air distributor; the convex thorns are positioned on the water outlet pipe sections and are formed by protruding from the inner side wall of the cylindrical shell.

According to an exemplary embodiment of the present invention, the water inlet pipe section extends along a first direction, the water outlet pipe section extends along a second direction, an included angle between the first direction and the second direction is between 60 ° and 120 °, and the water inlet pipe section and the water outlet pipe section are in smooth transition.

Preferably, the angle between the first direction and the second direction is 90 °.

According to another exemplary embodiment of the present invention, the cross-section of the cylindrical shell is circular, and the diameter of the cylindrical shell at the position of the protruding thorn is d1, the length of the protruding thorn is d2, satisfying: 4 × d2 is not less than d1 is not less than 8 × d 2.

Further, the spurs gradually decrease in cross-section from the inner side wall of the cylindrical housing radially inward of the cylindrical housing.

Preferably, the spurs are conical or truncated cone-shaped.

According to another exemplary embodiment of the present invention, the spur is provided at an outer ring side of the water outlet pipe section.

Further, the air distributor is of an annular structure and is fixed on the cylindrical shell along the circumferential direction of the cylindrical shell.

Specifically, the rotating impeller is disposed above the air distributor and can rotate under the push of the gas flowing out of the air distributor.

According to another exemplary embodiment of the utility model, the plug flow aeration equipment still include with the air supply line of air distributor intercommunication, the air supply line is provided with quick-operation joint with the one end of air supply intercommunication, still be provided with the blowoff valve on the air supply line.

Preferably, the plug-flow aeration device further comprises a flow regulating valve, and the flow regulating valve is arranged on the gas supply pipeline.

According to the utility model discloses an on the other hand provides an aeration system, aeration system includes the aeration tank, is fixed in main gas line on the aeration tank lateral wall to and above-mentioned plug flow aeration equipment, plug flow aeration equipment is a plurality of, and is a plurality of plug flow aeration equipment's air distributor respectively with main gas line intercommunication.

The utility model provides a plug flow aeration equipment and aeration systems have following beneficial effect at least: the water outlet pipe section of the cylindrical shell is provided with the convex thorns, and the convex thorns can cut the bubbles passing through the convex thorns again so that the bubbles become smaller, and therefore the dissolved oxygen efficiency of the water body can be improved.

Drawings

The above and/or other objects and advantages of the present invention will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

fig. 1 is a structural diagram of an aeration system according to an embodiment of the present invention.

Fig. 2 is a structural view of the push flow aeration apparatus of fig. 1.

Fig. 3 is a partially enlarged view of fig. 2.

Fig. 4 is a top view of fig. 3.

Description of reference numerals:

1. a plug flow aeration device; 10. a cylindrical housing; 11. rotating the impeller; 12. an air distributor; 13. convex thorns; 14. a water inlet; 15. a water outlet; 16. a blowoff valve; 17. a main gas line; 18. a flow regulating valve; 19. a quick coupling; 20. an aeration tank; 21. a branch gas line; 22. an impeller support frame; 23. an impeller shaft.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, it should not be understood that the aspects of the present invention are limited to the embodiments set forth herein. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.

Fig. 1 is a schematic diagram of an aeration system according to an exemplary embodiment of the present invention. Fig. 2 is a structural view of the push flow aeration apparatus of fig. 1. Fig. 3 is a partially enlarged view of fig. 2. Fig. 4 is a top view of fig. 3.

Referring to fig. 1, an exemplary embodiment of the present invention provides an aeration system, which may include an aeration tank 20, an air supply line disposed above the aeration tank 20, and a plug flow aeration apparatus 1. The air supply line may include a main air line 17 and a plurality of branch air lines 21 in communication with the main air line 17, wherein each branch air line 21 is in communication with a plug flow aerator 1. The plug flow aeration apparatus 1 may be located at the bottom of the aeration tank 20, but is spaced apart from the bottom by a predetermined distance, but not limited thereto.

The structure of the push flow aeration apparatus can be further understood with reference to fig. 2 to 4. The utility model provides a plug flow aeration equipment of an exemplary embodiment, including cylindric casing 10, rotatory impeller 11, air distributor 12 and set up protruding thorn 13 on cylindric casing 10 inner wall. In fig. 2, solid arrows indicate the flow direction of gas, and open arrows indicate the flow direction of sewage.

The cavity of the cylindrical housing 10 is used for accommodating the rotating impeller 11, the air distributor 121, the spurs 13 and the like. The cylindrical housing 10 may include a water inlet pipe section and a water outlet pipe section, and the cylindrical housing 10 may have a water inlet formed at the water inlet pipe section and a water outlet formed at the water outlet pipe section. The cylindrical housing 10 may be an integrally formed structure, or may be formed by assembling a water inlet pipe section and a water outlet pipe section which are separately formed.

The water inlet pipe section and the water outlet pipe section can extend along the same straight line, and the water inlet pipe section and the water outlet pipe section can be different from each other in the same straight line according to needs. Specifically, the water inlet pipe section extends along a first direction, the water outlet pipe section extends along a second direction, an included angle between the first direction and the second direction is 60-120 degrees, and the water inlet pipe section and the water outlet pipe section are in smooth transition. Preferably, the angle between the first direction and the second direction is 90 °.

In this embodiment, the cross section of the water inlet pipe section is circular, the cross section of the water outlet pipe section may be circular, and the connection portion between the water outlet pipe section and the water inlet pipe section is formed as an arc transition, for example, but not limited to, the arc transition may be 1/4 arc bend pipe section. In the use process, the water inlet pipe section can extend longitudinally, and the water outlet pipe section can extend horizontally. In this embodiment, the aeration system includes a plurality of plug-flow aeration devices 1, and water outlets of the plurality of plug-flow aeration devices 1 may be arranged along the same direction or different directions, and may be selected according to actual needs. The present embodiment is described by taking as an example that each cross section of the cylindrical housing 10 is an equal-diameter cross section, and the cross section diameter of the cylindrical housing 10 may be varied along the axial direction of the cylindrical housing 10 as needed.

In this embodiment, the cylindrical housing 10 can be molded by a PE mold, and has a simple overall structure, is not easy to age and corrode, and has a long service life.

The rotating impeller 11 is rotatably disposed on the water inlet pipe section, the rotating impeller 11 has at least one rotating blade, and the rotating impeller 11 may have a rotation axis, which may coincide with the axis of the water inlet pipe section, but is not limited thereto. The present embodiment is explained taking as an example a rotary impeller 11 having 3 rotary blades whose length in the radial direction of the cylindrical housing 10 is not more than the radius of the cylindrical housing 10.

Specifically, the water inlet pipe section in the cylindrical housing 10 is provided with an impeller support bracket 22, and the center of the impeller support bracket 22 is provided with a central through hole through which an impeller shaft 23 of the rotating impeller 11 passes. Further, the impeller supporting frame 22 may have a frame structure or a plate structure.

Referring to fig. 2 and 3, the air distributor 12 is fixed on the inner side wall of the water inlet pipe section and can be communicated with the air supply pipeline, the air distributor 12 is of a hollow shell structure, and a plurality of through holes are distributed on the shell of the air distributor 12. The blower feeds air at a pressure into the air supply line, through which an air flow is supplied to the air distributor 12. Specifically, in the operating state of the blower, the gas may enter the air distributor 12 from the supply line, move upward through the through holes of the housing of the air distributor 12, and finally flow out of the cylindrical housing 10 through the water outlet of the cylindrical housing 10, thereby forming a plurality of bubbles within the aeration tank 20.

Specifically, the air distributor 12 may have a ring-shaped structure, and is fixed on the inner wall of the cylindrical housing 10 along the circumferential direction of the cylindrical housing 10, and the cross section of the air distributor 12 along the axial direction of the water inlet pipe section may be circular, elliptical, polygonal, etc.

In this embodiment, the rotary impeller 11 is disposed above the air distributor 12 and can be rotated by the gas flowing out of the air distributor 12. In the embodiment, the push flow aeration device utilizes the gas provided by the blower to push the rotary impeller 11 to rotate in the aeration process, and the rotary impeller 11 cuts the bubbles passing through the rotary impeller, so that the volume of the bubbles is reduced, the number of the bubbles is increased, and the dissolved oxygen rate of the liquid is improved. In the process, the air blower is used for generating a plug flow effect on the liquid in the aeration tank 20, so that the plug flow aeration device has both the plug flow effect and the aeration effect, compared with the prior art, the aerator and the plug flow device are matched to realize the aeration and the plug flow functions, the number of devices in the aeration tank 20 is reduced, the structure of the plug flow aeration device is simplified, and the manufacturing cost is reduced.

Further, the rotating impeller 11 will drive the water flow to wash the inner side wall of the cylindrical housing 10 when stirring the water flow, so as to achieve the self-cleaning effect.

With reference to fig. 1, the spur 13 is located in the water outlet pipe section and is formed by protruding from the inner side wall of the cylindrical housing 10, and the spur 13 may be disposed on the entire inner side wall of the water outlet pipe section or on the outer ring side of the water outlet pipe section according to the requirement, and due to the existence of the arc-shaped bent pipe section, the liquid will generate centrifugal action in the arc-shaped bent pipe section in the flowing process, so the spur 13 is disposed on the outer ring side, and the utilization efficiency is higher. Further, the burs 13 may have a prism shape, a cylinder shape, or the like.

Preferably, the spurs 13 taper in cross-section from the inner sidewall of the cartridge housing 10 radially inward of the cartridge housing 10, for example, but not limited to, the spurs 13 being conical or frustoconically shaped.

The length of the spur 13 can be selected according to practical requirements, for example, but not limited to, the diameter of the cylindrical shell 10 is d1, and the length of the spur 13 is d2, so as to satisfy the following conditions: 4 × d2 ≦ d1 ≦ 8 × d2, and preferably, the diameter d1 of the cylindrical shell 10 may be 6 times the length of the spurs 13, for example, but not limited to, in the case of a cylindrical shell 10 having a diameter of 300mm, the length of the spurs 13 may be 50 mm.

The bubbles continue to flow towards the water outlet under the driving of the rotating impeller 11, and when the bubbles pass through the convex thorns 13, the convex thorns 13 can cut the bubbles for the second time, so that the volume of the bubbles is reduced again, the number of the bubbles is increased again, and the dissolved oxygen rate of the liquid is further improved.

Continuing to refer to fig. 1, plug flow aeration equipment 1 still includes the air supply line with air distributor 12 intercommunication, can be provided with quick-operation joint 19 on the air supply line to make things convenient for the high-speed joint of plug flow aeration equipment 1 and air supply line, the dismouting of being convenient for makes plug flow aeration equipment 1 have can the lifting function, when overhauing, can promote plug flow aeration equipment 1 to the surface of water more than, has reduced cost of maintenance. Further, the plug-flow aeration device 1 further comprises a flow regulating valve 18, and the flow regulating valve 18 is arranged on the air supply pipeline to control the air intake amount of the air supply pipeline in real time.

Preferably, the plug flow aerator 1 is further provided with a blowdown valve 16, and further, the blowdown valve 16 may communicate with the air distributor 12. Specifically, when the push flow aerator 1 stops operating, sewage flows back into the inner cavity of the cylindrical shell 10 from the water outlet, and the rotating impeller 11, the air distributor 12 and the spurs 13 are all filled with sludge, which even fills the air supply pipeline. When the push flow aeration device 1 is started again, the blower can be turned on first, the drain valve 16 will be opened under the action of air pressure, sewage will be discharged from the drain valve 16, specifically, sludge deposited in the air distributor 12 will be discharged downwards through the drain valve 16 until the sludge in the inner cavity of the air distributor 12 is discharged, so that the push flow aeration device 1 can be aerated again. Preferably, the waste valve 16 may be a one-way trap through which gas cannot pass.

In this embodiment, the air supply line may include a main air line 17 and a plurality of branch air lines 21 communicating with the main air line 17, and the main air line 17 may be disposed above the aeration tank 20, for example, but not limited to, may extend along the inner wall of the aeration tank 20. The branch pipe 21 may extend from above the aeration tank 20 down to the push aerator 1, for example, but not limited to, the branch pipe 21 may extend in a longitudinal direction.

To sum up, the utility model provides a push away and flow aeration equipment utilizes the gas that the air-blower provided, has aeration effect and push away the effect simultaneously, and simple structure has reduced manufacturing cost, has reduced aeration system's energy consumption. Except this, in this embodiment, push away class aeration equipment can realize after air distributor 12 forms the bubble, can carry out twice cutting to the bubble through rotatory impeller 11 and protruding thorn 13 to the dissolved oxygen efficiency of sewage has been improved, makes the aeration effect better.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The described features, structures, or characteristics of the invention may be combined in any suitable manner in one or more embodiments. In the description above, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

Claims

1. A push flow aeration device, comprising:

a cylindrical housing (10) including a water inlet pipe section and a water outlet pipe section;

the rotating impeller (11) is rotatably arranged on the water inlet pipe section;

the air distributor (12) is fixed on the inner side wall of the water inlet pipe section, the air distributor (12) is of a hollow shell structure, a plurality of through holes are distributed on a shell of the air distributor (12), and the air distributor is provided with an air inlet used for being connected with an air supply pipeline;

and the plurality of convex thorns (13) are positioned on the water outlet pipe section and are formed by protruding from the inner side wall of the cylindrical shell (10).

2. The push flow aeration device of claim 1, wherein said water inlet tube section extends in a first direction and said water outlet tube section extends in a second direction, and wherein an angle between said first direction and said second direction is between 60 ° and 120 °.

3. The push flow aerator according to claim 1, wherein the cylindrical housing (10) is circular in cross-section, and the diameter of the cylindrical housing (10) at the location of the spikes (13) is d1, and the length of the spikes (13) is d2, such that: 4 × d2 is not less than d1 is not less than 8 × d 2.

4. A push flow aeration device according to claim 3 wherein the prongs (13) taper in cross-section from the inner sidewall of the cylindrical housing (10) radially inward of the cylindrical housing (10).

5. The push flow aeration device according to claim 4, wherein the spurs (13) are conical or truncated conical in shape.

6. The push flow aeration device according to claim 1, wherein the spurs (13) are provided on the outer circumferential side of the water outlet pipe section.

7. A push flow aeration device according to any one of claims 1 to 6 wherein the air distributor (12) is of annular configuration and is secured to the inner side wall of the cylindrical housing (10) in the circumferential direction of the cylindrical housing (10).

8. The push flow aeration device according to claim 7, wherein the rotating impeller (11) is disposed above the air distributor (12) and is capable of rotating under the push of the gas flowing out of the air distributor (12).

9. The push flow aeration device of claim 8, further comprising an air supply line in communication with the air distributor (12), the air supply line having a quick connector (19) disposed thereon, and further comprising a flow control valve (18), the flow control valve (18) being disposed on the air supply line.

10. The push flow aeration device according to claim 1, further comprising a blowdown valve (16), wherein the blowdown valve (16) is disposed on the air distributor (12) in communication with the interior chamber of the air distributor (12).

11. An aeration system, characterized in that it comprises an aeration tank, a main air line (17) fixed to the side wall of the aeration tank, and a plurality of plug aeration devices according to any one of claims 1 to 10, the air distributors (12) of which are respectively communicated with the main air line (17).