Spherical porous microbubble injector head device

Abstract

The invention relates to a spherical porous microbubble injector head device which comprises an upper shell and a lower shell, a plurality of microchannels are evenly formed in the surface of the upper shell, a gas cavity channel and a liquid cavity channel are formed in the lower shell, the top of the gas cavity channel and the top of the liquid cavity channel are both connected to a gas-liquid mixing area and communicated with the gas-liquid mixing area, and the gas cavity channel and the liquid cavity channel are communicated with the gas-liquid mixing area. A gas-liquid mixing module is arranged in the gas-liquid mixing area, the gas-liquid mixing area is communicated with the microbubble cavity of the upper shell, an inlet of the bottom of the liquid cavity channel is communicated with an inlet of the lower shell, and a gas inlet of the gas cavity channel is formed in the side wall of the lower shell. The device obviously improves the efficiency and economy of the flocculation process, is suitable for the fields of sewage treatment, industrial water treatment and the like, and has wide popularization and application values.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, in particular to a spherical porous micro-bubble injection head device. Background Art

[0002] In the sewage treatment process, the addition and mixing of flocculants are key links. When spraying flocculants, traditional spray heads often have problems such as uneven mixing, low flocculation efficiency, limited bubble generation capacity, and small spray coverage. At the same time, the introduction of air plays an important role in the full contact and reaction between flocculants and sewage, but the existing devices can only achieve the mixing of flocculants and water bodies through simple liquid injection, which cannot effectively increase the gas-liquid contact area and the dispersion effect of flocculants, and it is difficult to achieve efficient mixing of gas and flocculants. In addition, the filtration treatment of flocculants before injection is also crucial to prevent impurities from affecting the flocculation effect and equipment operation. Therefore, it is of great significance to design a spherical porous microbubble spray head device that can effectively solve the above problems. Summary of the invention

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a spherical porous micro-bubble injection head device, which can improve the generation and uniformity of bubbles, expand the injection coverage, and optimize the utilization efficiency of flocculants.

[0004] The present invention is completed by adopting the following technical scheme: a spherical porous microbubble injection head device, including an upper shell and a lower shell, a plurality of openings are evenly arranged on the surface of the upper shell, an air cavity channel and a liquid cavity channel are arranged in the lower shell, the tops of the air cavity channel and the liquid cavity channel are connected to the gas-liquid mixing zone and are conducted with the gas-liquid mixing zone, a gas-liquid mixing module is arranged in the gas-liquid mixing zone, the gas-liquid mixing zone is conducted with the microbubble cavity of the upper shell, the bottom inlet of the liquid cavity channel is conducted with the inlet of the lower shell, and the air inlet of the air cavity channel is arranged at the side wall of the lower shell.

[0005] Furthermore, the gas-liquid mixing module includes a multi-layer filter screen and a gas filter layer, and gas filters are provided on both sides of the multi-layer filter screen. The bottom of the multi-layer filter screen is located at the top outlet of the liquid cavity channel, and the gas filter screen is located at the top inlet of the gas cavity channel.

[0006] Furthermore, an air cavity wall and a liquid cavity wall are arranged in the lower shell body, the liquid cavity wall is sleeved inside the air cavity wall, the inner cavity of the liquid cavity wall forms a liquid cavity channel, and an air cavity channel is formed between the outer wall of the liquid cavity wall and the inner wall of the air cavity wall.

[0007] Furthermore, the liquid cavity channel is an asymmetric conical channel that is dense on the outside and sparse on the inside.

[0008] Furthermore, the air inlet of the air cavity channel is provided with an air pressure regulating valve.

[0009] Furthermore, the bottom of the liquid cavity channel is provided with a first layer of filter screen.

[0010] Furthermore, the upper shell is spherical.

[0011] Furthermore, a threaded connection port is provided at the lower opening end of the lower shell.

[0012] Furthermore, the gas-liquid mixing zone is conductively connected to the microbubble cavity of the upper shell through a connecting channel, and the connecting channel is an asymmetric conical channel.

[0013] Beneficial effects of the present invention:

[0014] 1. Through the porous structure design of the spherical surface, the gas is efficiently cut into microbubbles of uniform size in multiple tiny channels, which significantly increases the gas-liquid contact area and enhances the mass transfer effect, thereby improving the flocculation efficiency and enhancing the bubble generation and uniformity.

[0015] 2. The porous design of the spherical structure realizes all-round injection, ensuring that the flocculant and microbubbles are evenly distributed in the water body, increasing the contact probability between the flocculant and pollutants, thereby improving the overall flocculation effect and expanding the injection coverage.

[0016] 3. Use microbubbles as carriers of flocculants to evenly disperse the flocculants in the water, prevent local concentrations from being too high or too low, give full play to the role of flocculants, reduce dosage and treatment costs, and optimize the utilization efficiency of flocculants. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a spherical porous micro-bubble injection head device;

[0018] Figure 2 for Figure 1 Schematic diagram of the internal structure of the medium-spherical porous microbubble injection head device.

[0019] Marking description: upper shell 1; lower shell 2; microchannel 3; microbubble cavity 4; air cavity channel 5; liquid cavity channel 6; gas-liquid mixing area 7; gas-liquid mixing module 8; connecting channel 9; air cavity wall 21; liquid cavity wall 22; threaded connection port 23; air cavity channel air inlet 51; air pressure regulating valve 52; first layer filter screen 61; multi-layer filter screen 81; gas filter layer 82. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] Reference Figure 1-2 The present invention provides a spherical porous microbubble injection head device, comprising an upper shell 1 and a lower shell 2, wherein the upper shell 1 is conductively connected to the lower shell 2. The upper shell 1 is spherical (preferably an elliptical sphere), and a plurality of microchannels 3 are evenly arranged on the surface of the spherical upper shell, and the interior of the spherical upper shell is a microbubble cavity 4. An air cavity channel 5 and a liquid cavity channel 6 are arranged in the lower shell, and the tops of the air cavity channel 5 and the liquid cavity channel 6 are both connected to the gas-liquid mixing zone 7 and are conductively connected to the gas-liquid mixing zone 7, wherein the air cavity channel 5 is used to store and transport air, and the liquid cavity channel 6 is used to store and transport flocculants. A gas-liquid mixing module 8 is arranged in the gas-liquid mixing zone 7, and the gas-liquid mixing zone 7 is conductively connected to the microbubble cavity 4 through a connecting channel 9, and the connecting channel 9 is preferably an asymmetric conical channel. When the flocculant enters the gas-liquid mixing module 8 through the liquid cavity channel 6, and the air enters the gas-liquid mixing module 8 through the air cavity channel 5, the flocculant and the air are mixed in the gas-liquid mixing module 8, and the air forms microbubbles in the flocculant, enters the microbubble cavity, and is then ejected from the microchannel 3 on the surface of the upper shell. The ejected flocculant and air mixture forms a uniform jet flow under the guidance of the elliptical sphere, which can be more effectively mixed with the sewage, thereby realizing efficient addition of the flocculant.

[0022] Specifically, an air cavity wall 21 and a liquid cavity wall 22 are arranged in the lower shell 2, and the liquid cavity wall 22 is sleeved inside the air cavity wall 21. The inner cavity of the liquid cavity wall 22 forms a liquid cavity channel 6, and the liquid cavity channel 6 is an asymmetric conical channel with dense outside and sparse inside. An air cavity channel 5 is formed between the outer wall of the liquid cavity wall 22 and the inner wall of the air cavity wall 21. The tops of the air cavity channel 5 and the liquid cavity channel 6 both extend to the gas-liquid mixing area 7, and the air cavity channel air inlet 51 is arranged at the side wall of the lower shell 2. The air cavity channel air inlet 51 is equipped with an air pressure regulating valve 52, and the air pressure regulating valve 52 controls the air path pressure of the air. The bottom entrance of the liquid cavity channel 6 is connected to the entrance of the lower shell 2, and the bottom entrance of the liquid cavity channel 6 is provided with a first layer of filter screen 61. The lower opening end of the lower shell 2 is provided with a threaded connection port 23, and the threaded connection port 23 is used to connect an external flocculant device. The flocculant device is detachably connected to the lower opening end of the lower shell 2. The flocculant device contains flocculants and is equipped with a hydraulic valve (the flocculant device is a prior art and is not shown in the drawings).

[0023] The gas-liquid mixing module 8 includes a multi-layer filter 81 and a gas filter layer 82. Gas filters 82 are provided on both sides of the multi-layer filter 81. The bottom of the multi-layer filter 81 is located at the top outlet of the liquid cavity channel 6. The two gas filters 82 are located at the top inlets of the two sides of the gas cavity channel. The air enters the multi-layer filter 81 after being filtered by the gas filters 82 on both sides. The flocculant is filtered by the multi-layer filter 81 and mixed with the air to form a mixture of flocculant and air, which enters the microbubble cavity 4 and is then ejected from the microchannel 3 on the surface of the upper shell.

[0024] Working process: The hydraulic valve of the flocculant device sets the liquid circuit pressure to 0.3-0.5Mpa (this pressure ensures that the flow rate of the flocculant through the multi-layer filter screen is ≥2m / s). The flocculant is initially filtered through the first layer of filter screen 61 to remove larger impurities. The filtered flocculant enters the liquid cavity channel 6 and is transmitted in the opposite direction to the gas-liquid mixing area. It is then filtered twice through the multi-layer filter screen 81 to further improve the purity of the flocculant and ensure that the flocculation effect and equipment operation will not be affected by impurities during injection. Among them, the liquid cavity channel 6 is preferably an asymmetric conical channel with dense outside and sparse inside (50μm at the outlet → 200μm at the inlet), the channel blockage rate is reduced by 90%, the maintenance-free period is extended by 10 times, and the maintenance cost is reduced by 85%.

[0025] At the same time, external air enters the air cavity channel 5 through the air cavity channel air inlet 51, wherein the air pressure regulating valve 52 sets the air path pressure to 0.4-0.6MPa, slightly higher than the liquid path, to prevent liquid backflow. The air enters the air filter layer 82 from the air cavity channel 5, and the air filter layer 82 filters the air to remove dust and other impurities therein, and also plays a role in stabilizing the airflow, so that the air enters the mixing link in a uniform and stable state.

[0026] The filtered air and the filtered flocculant are mixed with each other at the multi-layer filter screen 81. Under the action of the gas circuit pressure and the liquid circuit pressure, a certain turbulence effect is generated in the gas-liquid mixing module, which promotes the initial mixing of the flocculant and the air. The mixed flocculant and air mixture enters the microbubble cavity 4, in which the air forms microbubbles in the flocculant due to the changes in pressure and flow rate. These microbubbles not only increase the contact area between the flocculant and the air, but also help the flocculant to be evenly dispersed and suspended in the sewage by using the microbubbles as the carrier of the flocculant, prevent the local concentration from being too high or too low, give full play to the flocculant effect, reduce the dosage and processing cost, and thus improve the flocculation efficiency. Finally, the mixture is ejected through the holes on the elliptical porous sphere. The ejected flocculant and air mixture is guided by the elliptical sphere to form a uniform jet flow, which can be more effectively mixed with the sewage and realize the efficient addition of the flocculant.

[0027] The mixture is efficiently cut into microbubbles of uniform size through the microchannels 3 of the upper shell, which significantly increases the gas-liquid contact area and enhances the mass transfer effect. That is, 10-50μm microbubbles (accounting for >95%) are generated through the gas-liquid shear coupling mechanism: the specific surface area reaches 20m 2 / m 3 (Traditional nozzles are only 1.8m 2 / m 3) The gas-liquid mass transfer efficiency is increased by 5 times, and the floc formation speed is accelerated to 1.5 times. Microbubbles and flocculants are released synchronously in the pores. The reagent utilization rate jumps from the traditional 45% to 92% (laboratory gas chromatography verification). The pollutant removal rate is increased by 30% (COD removal rate>95% vs. traditional 70%), reducing the dosage of flocculants.

[0028] The upper shell adopts a spherical porous design (120-360 gradient micropores), the agent-bubble coverage area is increased by 400%, a stable vortex flow field is formed, and the flocculant residence time is extended to 180 seconds (traditional nozzles ≤ 45 seconds), achieving all-round injection, ensuring that the flocculant and microbubbles are evenly distributed in the water body, increasing the contact probability between the flocculant and the pollutants, and thus improving the overall flocculation effect. Among them, the diameter of the spherical structure is ≤150mm, and the flow adaptation range is 0.5-50m 3 / h, can directly replace traditional sprinkler heads, reducing transformation costs.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A spherical porous microbubble injection head device, characterized in that: It comprises an upper shell and a lower shell, wherein a plurality of micro-channels are evenly arranged on the surface of the upper shell, and an air cavity channel and a liquid cavity channel are arranged in the lower shell, and the tops of the air cavity channel and the liquid cavity channel are connected to a gas-liquid mixing zone and are communicated with the gas-liquid mixing zone, and a gas-liquid mixing module is arranged in the gas-liquid mixing zone, and the gas-liquid mixing zone is communicated with the micro-bubble cavity of the upper shell, and the bottom inlet of the liquid cavity channel is communicated with the inlet of the lower shell, and the air inlet of the air cavity channel is arranged at the side wall of the lower shell.

2. A spherical porous microbubble injection head device according to claim 1, characterized in that: The gas-liquid mixing module includes a multi-layer filter screen and a gas filter layer. Gas filter screens are arranged on both sides of the multi-layer filter screen. The bottom of the multi-layer filter screen is located at the top outlet of the liquid cavity channel, and the gas filter screen is located at the top inlet of the gas cavity channel.

3. A spherical porous microbubble injection head device according to claim 1 or 2, characterized in that: An air cavity wall and a liquid cavity wall are arranged in the lower shell body. The liquid cavity wall is sleeved inside the air cavity wall. The inner cavity of the liquid cavity wall forms a liquid cavity channel. An air cavity channel is formed between the outer wall of the liquid cavity wall and the inner wall of the air cavity wall.

4. A spherical porous microbubble injection head device according to claim 3, characterized in that: The liquid cavity channel is an asymmetric tapered channel with a dense outer surface and a sparse inner surface.

5. A spherical porous microbubble injection head device according to claim 1, 2 or 4, characterized in that: The air inlet of the air cavity channel is equipped with an air pressure regulating valve.

6. A spherical porous microbubble injection head device according to claim 5, characterized in that: The bottom of the liquid cavity channel is provided with a first layer of filter screen.

7. A spherical porous microbubble injection head device according to claim 1 or 2 or 4 or 6, characterized in that: The upper shell is spherical.

8. The spherical porous microbubble injection head device according to claim 7, characterized in that: A threaded connection port is provided at the lower opening end of the lower shell.

9. The spherical porous microbubble injection head device according to claim 1, characterized in that: The gas-liquid mixing area is conductively connected to the microbubble cavity of the upper shell through a connecting channel, and the connecting channel is an asymmetric tapered channel.

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