A microbubble pump

Abstract

The application discloses a micro-bubble pump, which comprises a pump shell and a vortex impeller, and is characterized in that the pump shell comprises a first pump shell (1) and a second pump shell (2), the first pump shell comprises a first shell section (7) and a second shell section (8), the second pump shell comprises a third shell section (9) and a fourth shell section (10), a first flow channel C1 is formed between the first shell section and the third shell section, a second flow channel C2 is formed between the second shell section and the fourth shell section, a third flow channel C3 is formed between the third shell section and the outer circumferential surface of the vortex impeller, a fourth flow channel C4 is formed between the fourth shell section and the outer circumferential surface of the vortex impeller, the first flow channel C1 is connected with the fourth flow channel C4 through a first communication channel, and the third flow channel C3 is connected with the second flow channel C2 through a second communication channel. The application can improve the output flow and pressure of the micro-bubble pump, thereby improving the efficiency of the micro-bubble pump.

Description

Technical Field

[0001] This invention relates to the field of gas-liquid mixing pump technology, and more specifically to a microbubble pump. Background Technology

[0002] A gas-liquid mixing pump uses negative pressure to draw in gas through its suction inlet. It can attract, mix, and dissolve gas and liquid, directly pumping highly dissolved gas and liquid to the point of use. A gas-liquid mixing pump is a type of pump that can generate microbubbles; vortex pumps are commonly used microbubble pumps or gas-liquid mixing pumps. Microbubble pumps are frequently used in equipment / processes such as air flotation, ozone water production, oxygen-enriched water production, and biochemical treatment. However, existing microbubble pumps still have issues such as relatively low output flow rate and pressure, a narrow maximum flow range in the Q-P curve, and the need for further improvement in pump efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a microbubble pump. Through the design of a first flow channel C1, a second flow channel C2, a third flow channel C3, and a fourth flow channel C4, the flow channels C1-C4 and C3-C2 form a cross-flow channel configuration. This allows for expanding the range / width of the maximum flow rate segment in the Q-P (flow-pressure) curve of the microbubble pump while ensuring gas solubility. Compared to a single-shell pump, this increases the output flow rate and pressure of the microbubble pump, thereby improving its efficiency. Furthermore, the design of the first and second adjustment sections reduces boundary layer eddies in flow channels C2 and C4, reducing pressure loss and further increasing the output flow rate and pressure of the microbubble pump, thus improving its efficiency.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A microbubble pump includes a pump casing and a vortex impeller (IM), the vortex impeller being installed inside the pump casing; characterized in that: the pump casing includes a first pump casing (1) and a second pump casing (2), the second pump casing being disposed on the inner circumferential side of the first pump casing; the first pump casing includes a first casing section (7) and a second casing section (8), the first casing section and the second casing section having approximately the same radius; the second pump casing includes a third casing section (9) and a fourth casing section (10), the third casing section and the fourth casing section having approximately the same radius; a first flow channel C1 is formed between the first casing section and the third casing section; and a flow channel C1 is formed between the second casing section and the fourth casing section. The second flow channel C2, the third shell section and the outer peripheral surface of the vortex impeller form the third flow channel C3, the fourth shell section and the outer peripheral surface of the vortex impeller form the fourth flow channel C4, the first partition (3) is disposed between the inlet end (5) and the outlet end (6), the second partition (4) is disposed between the third flow channel C3 and the fourth flow channel C4, the first flow channel C1 is connected to the fourth flow channel C4 through the first connecting channel, the third flow channel C3 is connected to the second flow channel C2 through the second connecting channel, the first flow channel C1 and the third flow channel C3 are connected to the inlet end, and the second flow channel C2 and the fourth flow channel C4 are connected to the outlet end.

[0006] Furthermore, the inner circumferential surface of the second housing segment (8) is provided with a first adjustment part (30), the first adjustment part including a plurality of first step parts, the first step parts being obtained by reducing the wall thickness of the second housing segment.

[0007] Furthermore, the plurality of first stepped portions extend and are arranged circumferentially along the second housing segment (8), and extend from the upstream end to the downstream end of the second housing segment.

[0008] Furthermore, the inner circumferential surface of the fourth housing segment (10) is provided with a second adjustment part (20), the second adjustment part includes a plurality of second step parts, the second step parts are obtained by reducing the wall thickness of the fourth housing segment.

[0009] Furthermore, the plurality of second step portions extend circumferentially along the fourth shell segment (10) and are arranged therein, extending from the upstream end to the downstream end of the fourth shell segment.

[0010] Furthermore, the second flow channel C2 has a minimum radial width S1, and each first step portion has a radial depth H1, where H1 = (0.03-0.10)S1.

[0011] Furthermore, the fourth flow channel C4 has a minimum radial width S2, and each second step has a radial depth H2, where H2 = (0.03-0.10)S2; S1 = (0.95-1.0)S2.

[0012] Furthermore, there is a radial gap G between the inner circumferential surface of the first partition (3) or the second partition (4) and the outer circumferential surface of the vortex impeller (IM), where G = (1.3-2.0)H1 or G = (1.3-2.0)H2.

[0013] This invention discloses a microbubble pump. Through the design of a first flow channel C1, a second flow channel C2, a third flow channel C3, and a fourth flow channel C4, the flow channels C1-C4 and C3-C2 form a cross-flow dual-channel arrangement. This design expands the range / width of the maximum flow rate segment in the Q-P (flow-pressure) curve of the microbubble pump while ensuring gas solubility. Compared to a single-shell pump, this increases the output flow rate and pressure of the microbubble pump, thereby improving its efficiency. Furthermore, the design of the first and second adjustment sections reduces boundary layer eddies in flow channels C2 and C4, minimizing pressure loss and further increasing the output flow rate and pressure of the microbubble pump, thus enhancing its efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a microbubble pump in the prior art;

[0015] Figure 2 This is a schematic diagram of the microbubble pump structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the microbubble pump structure of the present invention.

[0017] In the figure: First pump casing 1, second pump casing 2, first partition 3, second partition 4, inlet end 5, outlet end 6, first casing section 7, second casing section 8, third casing section 9, fourth casing section 10, first adjusting section 30, second adjusting section 20, first flow channel C1, second flow channel C2, third flow channel C3, fourth flow channel C4, vortex impeller IM. Detailed Implementation

[0018] To make the technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of the present invention, and are only used to explain the present invention, not to limit the present invention. It should be noted that, for ease of description, only the parts / structures related to the present invention are shown in the accompanying drawings. Other related parts can be referred to with ordinary design. In the absence of conflict, the embodiments and technical features in the embodiments of the present invention can be combined with each other to obtain new embodiments.

[0019] Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention. Furthermore, unless otherwise defined, the technical or scientific terms used in the description of this invention should have the ordinary meaning understood by those skilled in the art.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] like Figure 2-3 As shown, a microbubble pump includes a pump casing and a vortex impeller IM, with the vortex impeller IM installed inside the pump casing. The pump casing comprises a first pump casing 1 and a second pump casing 2, with the second pump casing 2 disposed on the inner circumference of the first pump casing 1. The first pump casing 1 includes a first casing section 7 and a second casing section 8, with the first casing section 7 and the second casing section 8 having approximately the same outer diameter / radius. The second pump casing 2 includes a third casing section 9 and a fourth casing section 10, with the third casing section 9 and the fourth casing section 10 having approximately the same outer diameter / radius. A first flow channel C1 is formed between the first casing section 7 and the third casing section 9. The second casing section 8 and the fourth casing section 10... The second flow channel C2 is formed between the third shell section 9 and the outer peripheral surface of the vortex impeller IM. The fourth flow channel C4 is formed between the fourth shell section 10 and the outer peripheral surface of the vortex impeller IM. The first partition 3 is located between the inlet end 5 and the outlet end 6. The second partition 4 is located between the third flow channel C3 and the fourth flow channel C4. The first flow channel C1 is connected to the fourth flow channel C4 through the first connecting channel. The third flow channel C3 is connected to the second flow channel C2 through the second connecting channel. The first flow channel C1 and the third flow channel C3 are connected to the inlet end 5. The second flow channel C2 and the fourth flow channel C4 are connected to the outlet end 6.

[0022] The present invention discloses a microbubble pump, which, through the design of a first flow channel C1, a second flow channel C2, a third flow channel C3, and a fourth flow channel C4, forms a cross-type dual flow channel arrangement with flow channels C1-C4 and C3-C2. This arrangement can expand the range / width of the maximum flow range in the Q-P (flow-pressure) curve of the microbubble pump while ensuring gas solubility. Compared with a single-shell pump, this arrangement can improve the output flow rate and pressure of the microbubble pump, thereby improving the efficiency of the microbubble pump.

[0023] Furthermore, a first adjustment part 30 is provided on the inner peripheral surface of the second housing segment 8. The first adjustment part 30 includes a plurality of first step parts, which are obtained by reducing the wall thickness of the second housing segment 8.

[0024] Multiple first step portions extend and are arranged along the circumference of the second shell section 8, and extend from the upstream end to the downstream end of the second shell section 8.

[0025] The inner circumferential surface of the fourth housing segment 10 is provided with a second adjustment part 20. The second adjustment part 20 includes a plurality of second step parts, which are obtained by reducing the wall thickness of the fourth housing segment 10.

[0026] Multiple second-step portions extend circumferentially along the fourth shell section 10 and are arranged in a manner that extends from the upstream end to the downstream end of the fourth shell section 10.

[0027] The present invention discloses a microbubble pump, which, through the design of the first adjustment part 30 and the second adjustment part 20, can reduce the boundary layer eddies in the flow channels C2 and C4, reduce pressure loss, and thereby further improve the output flow rate and pressure of the microbubble pump and improve the efficiency of the microbubble pump.

[0028] Furthermore, the second flow channel C2 has a minimum radial width S1, and each first step portion has a radial depth H1, H1 = (0.03-0.10)S1, preferably 0.05-0.07.

[0029] The fourth flow channel C4 has a minimum radial width S2, and each second step has a radial depth H2, H2 = (0.03-0.10)S2, preferably 0.05-0.07. S1 = (0.95-1.0)S2.

[0030] There is a radial gap G between the inner circumferential surface of the first partition part 3 or the second partition part 4 and the outer circumferential surface of the vortex impeller IM, where G = (1.3-2.0)H1 or G = (1.3-2.0)H2, preferably 1.5-1.8.

[0031] This invention discloses a microbubble pump. Through the design of a first flow channel C1, a second flow channel C2, a third flow channel C3, and a fourth flow channel C4, the flow channels C1-C4 and C3-C2 form a cross-flow dual-channel arrangement. This arrangement expands the range / width of the maximum flow rate segment in the Q-P (flow-pressure) curve of the microbubble pump while ensuring gas solubility. Compared to a single-shell pump, this increases the output flow rate and pressure of the microbubble pump, thereby improving its efficiency. Furthermore, the design of the first adjustment unit 30 and the second adjustment unit 20 reduces boundary layer eddies in flow channels C2 and C4, reducing pressure loss and further increasing the output flow rate and pressure of the microbubble pump, thus improving its efficiency.

[0032] The above embodiments are illustrative of the present invention and not intended to limit the invention. It is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microbubble pump, comprising a pump casing and a vortex impeller (IM), the vortex impeller being installed inside the pump casing; characterized in that: The pump casing includes a first pump casing (1) and a second pump casing (2). The second pump casing is disposed on the inner circumference of the first pump casing. The first pump casing includes a first casing section (7) and a second casing section (8), which have approximately the same radius. The second pump casing includes a third casing section (9) and a fourth casing section (10), which have approximately the same radius. The first casing section and the third casing section form a first flow channel C1, and the second casing section and the fourth casing section form a second flow channel C2. The third casing section is adjacent to the outer circumference of the vortex impeller. The surface between the two sides forms a third flow channel C3, and the fourth shell section and the outer peripheral surface of the vortex impeller form a fourth flow channel C4. The first partition (3) is located between the inlet end (5) and the outlet end (6), and the second partition (4) is located between the third flow channel C3 and the fourth flow channel C4. The first flow channel C1 is connected to the fourth flow channel C4 through the first connecting channel, and the third flow channel C3 is connected to the second flow channel C2 through the second connecting channel. The first flow channel C1 and the third flow channel C3 are connected to the inlet end, and the second flow channel C2 and the fourth flow channel C4 are connected to the outlet end. The inner circumferential surface of the second shell section (8) is provided with a first adjustment part (30). The first adjustment part includes a plurality of first step parts, which are obtained by reducing the wall thickness of the second shell section. The plurality of first step parts extend and are arranged along the circumferential direction of the second shell section (8) and extend from the upstream end to the downstream end of the second shell section.

2. A microbubble pump as described in claim 1, characterized in that, The inner circumferential surface of the fourth housing segment (10) is provided with a second adjustment part (20), which includes a plurality of second step parts, which are obtained by reducing the wall thickness of the fourth housing segment.

3. A microbubble pump as described in claim 2, characterized in that, The plurality of second step portions extend circumferentially along the fourth shell section (10) and are arranged therein, extending from the upstream end to the downstream end of the fourth shell section.

4. A microbubble pump as described in claim 3, characterized in that, The second flow channel C2 has a minimum radial width S1, and each first step has a radial depth H1, where H1 = (0.03-0.10)S1.

5. A microbubble pump as described in claim 4, characterized in that, The fourth flow channel C4 has a minimum radial width S2, and each second step has a radial depth H2, where H2 = (0.03-0.10)S2; S1 = (0.95-1.0)S2.

6. A microbubble pump as described in claim 5, characterized in that, The inner circumferential surface of the first partition (3) or the second partition (4) has a radial clearance G between the outer circumferential surface of the vortex impeller (IM), where G = (1.3-2.0)H1 or G = (1.3-2.0)H2.

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