Oxygenation device based on wall attachment effect

Abstract

The utility model discloses an oxygenation device based on a wall attachment effect, which is characterized in that a plurality of flow guide pipes are arranged at intervals from top to bottom above an aerobic tank, a water inlet main pipe is arranged above the flow guide pipes, and a plurality of water outlet branch pipes are arranged on the water inlet main pipe along the axial direction; during oxygenation, water flow flowing out of the water outlet branch pipe downwards flows through the flow guide pipes and then falls into the aerobic tank, and when the water flow flows through the flow guide pipes, a wall attachment effect is generated to form a water curtain which is in contact with air flow to realize oxygenation. According to the utility model, a water curtain is formed by utilizing a wall attachment effect generated by water flow on the flow guide pipe, and is in full contact with natural air flow, so that a large amount of air is dissolved in the water curtain to fulfill the aim of oxygenating, and a power device such as a fan is not required to be used for oxygenating in the aerobic tank, so that the power device is saved, the structure is simplified, the energy consumption is also saved, and the operation is stable and reliable; and the oxygenation efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to an oxygenating device based on the wall attachment effect. Background Art

[0002] With the development of environmental protection, biochemical treatment of sewage has received increasing attention. In recent years, biological contact oxidation has been widely used in the treatment of urban sewage and industrial wastewater. Especially for some industrial wastewater, in order to avoid the expansion of activated sludge and facilitate the operation and management of treatment plants, biological contact oxidation is usually used.

[0003] Aeration and oxygenation refers to the forced and accelerated transfer of oxygen into the water body, so that the oxygen in the air, activated sludge and pollutants are fully mixed, the activated sludge is suspended, and the oxygen is promoted to move from the water phase to the liquid phase, and from the liquid phase to the activated sludge, ensuring that the microorganisms have enough oxygen to carry out material metabolism.

[0004] At present, the aeration and oxygenation method of sewage biochemical pools is usually to set up a tubular aerator in the biochemical pool, and then supply air to the tubular aerator through a fan installed outside the biochemical pool to aerate and oxygenate the sewage in the biochemical pool. This aeration and oxygenation device needs to be supplied by power equipment (fan), has a complex structure, and consumes a lot of energy. Utility Model Content

[0005] In view of the shortcomings of the above-mentioned existing aeration and oxygenation devices used in sewage treatment, the applicant provides an oxygenation device with a reasonable structure based on the wall effect, which saves power devices, simplifies the structure and reduces energy consumption.

[0006] The technical solution adopted by the utility model is as follows:

[0007] An oxygenation device based on the wall attachment effect, wherein a plurality of guide pipes are arranged from top to bottom above an aerobic pool, a water inlet main pipe is arranged above the guide pipe, and a plurality of water outlet branch pipes are arranged axially on the water inlet main pipe; during oxygenation, water flowing out of the water outlet branch pipe flows downward through the plurality of guide pipes and then falls into the aerobic pool, and when the water flows through the guide pipes, the wall attachment effect is generated to form a water curtain that contacts with the air flow to realize oxygenation.

[0008] As a further improvement of the above technical solution:

[0009] The central axis of the outlet branch pipe deviates from the center of the guide pipe.

[0010] The horizontal distance X between the center of the guide pipe and the central axis of the outlet branch pipe is smaller than the radius R of the guide pipe, and X is approximately 1 / 2-1 / 3 of R.

[0011] The radius R of the guide tube is 100-200 mm.

[0012] Several guide pipes are arranged on the same vertical plane, and the vertical distance Y1 between the centers of two adjacent guide pipes is 400-800 mm.

[0013] The lowest draft pipe is separated from the top surface of the aerobic pool by a certain distance, and the vertical distance Y2 between the center of the lowest draft pipe and the top surface of the aerobic pool is 500-1000mm.

[0014] The central axis of the outlet branch pipe passes through the center of the inlet and outlet main pipes.

[0015] The diameter d of the outlet branch pipe is smaller than the diameter D of the inlet main pipe, and d is approximately 1 / 5-1 / 10 of D.

[0016] The guide pipe and the water inlet pipe are arranged horizontally, and the water outlet branch pipe is arranged vertically; one end of the water inlet pipe is opened as the water inlet, and a plug is arranged at the other end for sealing.

[0017] A plurality of flow guide pipes are arranged on a support frame, and the support frame is fixedly arranged on the aerobic pool.

[0018] The beneficial effects of the utility model are as follows:

[0019] The utility model utilizes the wall attachment effect of water flow on the guide pipe to form a water curtain, which is fully in contact with the air flow of nature, so that a large amount of air is dissolved in the water curtain to achieve the purpose of oxygenation. It is no longer necessary to use power devices such as fans to oxygenate the aerobic pool, which saves power devices, simplifies the structure, and saves energy. The water flow wall attachment effect is used for oxygenation, which is not limited by the power device, has stable and reliable operation, and has high oxygenation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0021] Figure 2 It is a right side structural schematic diagram of the utility model.

[0022] Figure 3 Schematic diagram of the wall effect.

[0023] In the figure: 1, aerobic pool; 2, support frame; 3, guide pipe; 4, water inlet main pipe; 5, water outlet branch pipe; 6, plug; 10, water flow; 20, air flow. DETAILED DESCRIPTION

[0024] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0025] like Figure 1 , Figure 2As shown, the utility model is fixedly provided with a support frame 2 above the aerobic pool 1, and a plurality of horizontal flow guide pipes 3 are provided on the support frame 2. A water inlet main pipe 4 is horizontally provided above the top flow guide pipe 3, and a plurality of water outlet branch pipes 5 are axially provided on the water inlet main pipe 4, and the water outlet branch pipes 5 are connected to the water inlet main pipe 4; one end of the water inlet main pipe 4 is open as a water inlet, and a plug 6 is provided at the other end for sealing. Water is input into the water inlet main pipe 4 from the water inlet, flows out from the plurality of water outlet branch pipes 5, flows through the plurality of flow guide pipes 3, and then falls into the aerobic pool 1. Figure 3 As shown, due to the viscosity of the water flow 10, when there is surface friction between the fluid and the surface of the object it flows through, as long as the curvature is not large, the fluid will flow along the surface of the object, that is, the wall effect is generated. Figure 2 As shown, due to the wall attachment effect when the water flow 10 flows through the guide pipe 3, the water flow 10 deviates from the original vertical flow direction and tends to flow along the surface of the object of the guide pipe 3. By utilizing the generation of the wall attachment effect, the water flow 10 flows forward along the surface from one direction from the first guide pipe 3, falls on the second guide pipe 3, and flows reversely along the surface from another direction, and repeatedly flows reversely from top to bottom along the guide pipe 3 to form a tortuous water curtain. In the downward process, the natural air flow 20 dissolves a large amount of air into the water curtain during the convection process, achieving the effect of oxygenation, and falls downward into the aerobic tank 1 along the water curtain to provide oxygen to the activated sludge in the aerobic tank 1.

[0026] Several flow guide pipes 3 are arranged on the same vertical plane and spaced from top to bottom. The vertical distance Y1 between the centers of two adjacent flow guide pipes 3 is 400-800mm, which ensures the wall attachment effect on the flow guide pipes 3. The number of flow guide pipes 3 arranged from top to bottom does not exceed five groups to prevent the water flow 10 from being seriously dispersed and difficult to produce the wall attachment effect. The length and radius of each flow guide pipe 3 are consistent, the length of the flow guide pipe 3 is less than the width of the aerobic pool 1, and the radius R of the flow guide pipe 3 is 100-200mm, which ensures the generation of the wall attachment effect. The bottom flow guide pipe 3 is separated from the top surface of the aerobic pool 1 by a certain distance, and the vertical distance Y2 between the center of the bottom flow guide pipe 3 and the top surface of the aerobic pool 1 is 500-1000mm.

[0027] The outlet branch pipe 5 is vertically arranged at the bottom side of the inlet main pipe 4, and the central axis of the outlet branch pipe 5 passes through the center of the inlet and outlet main pipes 4. The diameter d of the outlet branch pipe 5 is smaller than the diameter D of the inlet main pipe 4, and d is approximately 1 / 5-1 / 10 of D. The central axis of the outlet branch pipe 5 deviates from the center of the flow guide pipe 3, and the horizontal distance X between the center of the flow guide pipe 3 and the central axis of the outlet branch pipe 5 is smaller than the radius R of the flow guide pipe 3, and X is approximately 1 / 2-1 / 3 of R, so as to ensure the generation of the wall attachment effect.

[0028] The utility model utilizes the wall attachment effect of the water flow 10 on the guide tube 3 to form a water curtain, which is fully in contact with the natural air flow 20, so that a large amount of air is dissolved in the water curtain to achieve the purpose of oxygenation. It is no longer necessary to use a power device such as a fan to oxygenate the aerobic pool 1, which saves the power device, simplifies the structure, and saves energy consumption. The wall attachment effect of the water flow 10 is used for oxygenation, and the operation is stable and reliable, and the oxygenation efficiency is high.

[0029] The above description is an explanation of the utility model, not a limitation of the utility model. The utility model can be modified in any form without violating the spirit of the utility model.

Claims

1. An oxygenation device based on the wall effect, characterized in that: A plurality of guide pipes (3) are arranged from top to bottom above the aerobic pool (1), a water inlet main pipe (4) is arranged above the guide pipe (3), and a plurality of water outlet branch pipes (5) are arranged axially on the water inlet main pipe (4); during oxygenation, water (10) flowing out of the water outlet branch pipe (5) flows downward through the plurality of guide pipes (3) and then falls into the aerobic pool (1), and when the water (10) flows through the guide pipe (3), a wall attachment effect is generated to form a water curtain that contacts with the air flow (20) to achieve oxygenation.

2. The oxygenation device based on the wall effect according to claim 1, characterized in that: The central axis of the water outlet branch pipe (5) deviates from the center of the flow guide pipe (3).

3. The oxygenation device based on the wall effect according to claim 2, characterized in that: The horizontal distance X between the center of the flow guide pipe (3) and the center axis of the water outlet branch pipe (5) is smaller than the radius R of the flow guide pipe (3), and X is approximately 1 / 2 to 1 / 3 of R.

4. The oxygenation device based on the wall effect according to claim 1, characterized in that: The radius R of the flow guide tube (3) is 100-200 mm.

5. The oxygenation device based on the Coanda effect according to claim 1, characterized in that: The plurality of flow guide pipes (3) are arranged on the same vertical plane, and the vertical distance Y1 between the centers of two adjacent flow guide pipes (3) is 400-800 mm.

6. The oxygenation device based on the Coanda effect according to claim 1, characterized in that: The bottom draft tube (3) is spaced a certain distance from the top surface of the aerobic pool (1), and the vertical distance Y2 between the center of the bottom draft tube (3) and the top surface of the aerobic pool (1) is 500-1000 mm.

7. The oxygenation device based on the Coanda effect according to claim 1, characterized in that: The central axis of the water outlet branch pipe (5) passes through the center of the water outlet and inlet main pipes (4).

8. The oxygenation device based on the Coanda effect according to claim 1, characterized in that: The diameter d of the water outlet branch pipe (5) is smaller than the diameter D of the water inlet main pipe (4), and d is approximately 1 / 5-1 / 10 of D.

9. The oxygenation device based on the Coanda effect according to claim 1, characterized in that: The flow guide pipe (3) and the water inlet main pipe (4) are arranged horizontally, and the water outlet branch pipe (5) is arranged vertically; one end of the water inlet main pipe (4) is open as a water inlet, and the other end is provided with a plug (6) for blocking.

10. The oxygenation device based on the Coanda effect according to claim 1, characterized in that: A plurality of flow guide pipes (3) are arranged on a support frame (2), and the support frame (2) is fixedly arranged on the aerobic pool (1).

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