High-efficiency gas-liquid mixing pump

Abstract

This invention discloses a high-efficiency gas-liquid mixing pump, comprising an inlet pipe (2), an outlet pipe (3), a pump casing (4), a vortex impeller (5), a partition (6), and a pump cavity flow channel (7), wherein the vortex impeller and the pump casing form the pump cavity flow channel; characterized in that it further comprises a balancing mechanism, which includes a first flow channel (8), a second flow channel (9), a balancing adjustment chamber (10), a conical connecting hole (11), a third flow channel (12), and a regulating valve core (14). One end of the first flow channel is connected to the outlet pipe through the connecting hole, and the first side of the other end is connected to the pump cavity flow channel through the conical connecting hole, while the second side of the other end is connected to the balancing adjustment chamber through the third flow channel. One end of the second flow channel is connected to the inlet pipe through the connecting hole, and the other end is connected to the balancing adjustment chamber through the connecting hole. This invention can adjust / balance the pressure difference and flow resistance of the pump cavity when the gas-liquid mixing pump is in an unstable operating condition, thereby improving the hydraulic performance of the gas-liquid mixing pump, the efficiency of pumping gas-liquid mixed media, and the operational stability of the gas-liquid mixing pump.

Description

Technical Field

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

[0002] Gas-liquid mixing pumps utilize negative pressure to draw in gas at the suction inlet. They can perform gas-liquid suction, mixing, and dissolution, directly pumping the highly dissolved solution to the point of use. Vortex pumps are commonly used gas-liquid mixing pumps. They are frequently used in equipment / processes such as air flotation, ozone water production, oxygen-enriched water production, and biochemical treatment. However, existing gas-liquid mixing pumps suffer from problems such as large pressure differences in the pump chamber, high flow resistance, and limited flow rate at the inlet of the pump chamber under unstable operating conditions. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a high-efficiency gas-liquid mixing pump. Through the design of a balancing adjustment mechanism, this pump can regulate / balance the pressure difference and flow resistance in the pump chamber during unstable operating conditions (such as abnormal stop phases, abnormal pressure / flow rate changes, and start-up phases), thereby improving the hydraulic performance and pumping efficiency of the gas-liquid mixture, as well as enhancing its operational stability. The design of the cut-out section promotes partial backflow from the outlet pipe side to the inlet pipe side and increases the inlet flow rate of the pump chamber flow channel, thus regulating / balancing the pressure difference and flow resistance in the pump chamber and improving the efficiency of the gas-liquid mixing pump.

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

[0005] A high-efficiency gas-liquid mixing pump includes a pump body (1), an inlet pipe (2), an outlet pipe (3), a pump casing (4), a vortex impeller (5), a partition (6), a pump cavity flow channel (7), and a motor (M). The pump body is installed at one end of the motor, the vortex impeller is connected to the output shaft of the motor, the pump casing is provided with an inlet pipe and an outlet pipe, the inlet pipe and the outlet pipe are arranged radially, the vortex impeller and the pump casing form a pump cavity flow channel, and a partition is provided between the inlet pipe and the outlet pipe; the pump body is characterized by further including a balance adjustment mechanism, the balance adjustment mechanism including a first flow channel (8), a second flow channel (9), a balance adjustment cavity (10), a conical connecting hole (11), a third flow channel (12), and a regulating valve core (14). One end of the first flow channel is connected to the outlet pipe through the connecting hole, the first side of the other end is connected to the pump cavity flow channel through the conical connecting hole, and the second side of the other end is connected to the balance adjustment cavity through the third flow channel. One end of the second flow channel is connected to the inlet pipe through the connecting hole, and the other end is connected to the balance adjustment cavity through the connecting hole.

[0006] Furthermore, the balance adjustment chamber (10) is located at the bottom end of the pump casing. The balance adjustment chamber includes a first chamber and a second chamber. The first chamber and the second chamber are separated by the adjustment piston (13). The second side of the other end of the first flow channel (8) is connected to the second chamber through the third flow channel. The other end of the second flow channel (9) is connected to the first chamber through the connecting hole. An adjustment valve core is provided at the upper end of the adjustment piston. The adjustment valve core is arranged radially. The upper end of the adjustment valve core has a tapered section. The tapered section cooperates with the tapered connecting hole. Under the action of the liquid pressure difference, the adjustment piston causes the adjustment valve core (14) to move up and down. The adjustment valve core can open or close the tapered connecting hole (11).

[0007] Furthermore, the first flow channel (8) is arranged along the outer periphery of the pump casing and is a flow channel composed of two shells, that is, the outer shell and the pump casing form the first flow channel, and the second flow channel (9) is composed of a connecting pipe.

[0008] Furthermore, an adjustment spring with a preset elastic coefficient is provided in the balance adjustment cavity (10). One end of the adjustment spring is connected to the outer wall of the outer shell, and the other end is connected to the upper end face of the adjustment piston (13). The adjustment spring is sleeved on the outer periphery of the adjustment valve core (14).

[0009] Furthermore, the partition (6) is provided with a cut (15), which is located on the outer periphery of the vortex impeller (5). The cut includes a first cut groove (16) and a second cut groove (17).

[0010] Furthermore, the first notch (16) is a V-shaped notch, and the top surface of the first notch is located on the inner circumferential surface of the inlet pipe (2). The second notch (17) is a U-shaped notch with a pointed bottom end, and the top surface of the second notch is opposite to the outer circumferential surface of the vortex impeller (5).

[0011] Furthermore, the circumferential depth of the cut portion (15) is greater than the radial depth of the cut portion, or the circumferential depth of the second cut groove (17) is greater than the radial depth of the first cut groove (16).

[0012] Furthermore, the maximum circumferential length of the cut portion (15) is 0.4-0.9 times the circumferential length of the corresponding position of the partition portion (6).

[0013] Furthermore, the gas-liquid mixing pump is a vortex pump.

[0014] This invention discloses a high-efficiency gas-liquid mixing pump. Through the design of a balancing adjustment mechanism, it can regulate / balance the pressure difference and flow resistance in the pump chamber during unstable operating conditions (such as abnormal stop phases, abnormal pressure / flow rate changes, and start-up phases), thereby improving the hydraulic performance and pumping efficiency of the gas-liquid mixture, as well as enhancing the pump's operational stability. The design of the cut-out section promotes partial backflow from the outlet pipe side to the inlet pipe side and increases the inlet flow rate of the pump chamber flow channel, thus regulating / balancing the pressure difference and flow resistance in the pump chamber and improving the efficiency of the gas-liquid mixing pump. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an existing gas-liquid mixing pump;

[0016] Figure 2 This is a schematic diagram of the high-efficiency gas-liquid mixing pump / vortex pump structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the cutout structure of the partition portion of the present invention.

[0018] In the diagram: 1. Pump body; 2. Inlet pipe; 3. Outlet pipe; 4. Pump casing; 5. Vortex impeller; 6. Isolation section; 7. Pump cavity flow channel; 8. First flow channel; 9. Second flow channel; 10. Balance adjustment chamber; 11. Conical connecting hole; 12. Third flow channel; 13. Adjusting piston; 14. Adjusting valve core; 15. Cut-out section; 16. First cut-out groove; 17. Second cut-out groove; 18. Motor M. Detailed Implementation

[0019] 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.

[0020] 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.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] like Figure 1-3As shown, a high-efficiency gas-liquid mixing pump includes a pump body 1, an inlet pipe 2, an outlet pipe 3, a pump casing 4, a vortex impeller 5, a partition 6, a pump cavity flow channel 7, and a motor M. The pump body 1 is mounted on one end of the motor M. The vortex impeller 5 is connected to the output shaft of the motor M. The pump casing 4 is provided with the inlet pipe 2 and the outlet pipe 3, which are arranged radially. The vortex impeller 5 and the pump casing 4 form the pump cavity flow channel 7. The partition 6 is provided between the inlet pipe 2 and the outlet pipe 3. The pump is characterized by further including a balance adjustment mechanism. The mechanism, the balance adjustment mechanism, includes a first flow channel 8, a second flow channel 9, a balance adjustment cavity 10, a tapered connecting hole 11, a third flow channel 12, and a regulating valve core 14. One end of the first flow channel 8 is connected to the outlet pipe 3 through the connecting hole, and the first side of the other end is connected to the pump cavity flow channel 7 through the tapered connecting hole 11. The second side of the other end is connected to the balance adjustment cavity 10 through the third flow channel 12. One end of the second flow channel 9 is connected to the inlet pipe 2 through the connecting hole, and the other end is connected to the balance adjustment cavity 10 through the connecting hole.

[0023] Furthermore, the balance adjustment chamber 10 is located at the bottom end of the pump housing 4. The balance adjustment chamber 10 includes a first chamber and a second chamber, which are separated by the adjustment piston 13. The second side of the other end of the first flow channel 8 is connected to the second chamber through the third flow channel 12. The other end of the second flow channel 9 is connected to the first chamber through a connecting hole. The upper end of the adjustment piston 13 is provided with an adjustment valve core 14, which is arranged radially. The upper end of the adjustment valve core 14 has a tapered section, which is matched with the tapered connecting hole 11. Under the action of the liquid pressure difference, the adjustment piston 13 allows the adjustment valve core 14 to move up and down, and the adjustment valve core 14 can open or close the tapered connecting hole 11.

[0024] The present invention discloses a high-efficiency gas-liquid mixing pump, which, through the design of a balancing adjustment mechanism, can adjust / balance the pressure difference and flow resistance of the pump chamber during unstable operating conditions of the gas-liquid mixing pump (such as abnormal stop stage, abnormal pressure / flow change stage, start-up stage, etc.), thereby improving the hydraulic performance of the gas-liquid mixing pump, the efficiency of pumping gas-liquid mixed media, and the operational stability of the gas-liquid mixing pump.

[0025] The first flow channel 8 is arranged along the outer periphery of the pump casing 4 and is a flow channel composed of two shells, that is, the outer shell and the pump casing 4 form the first flow channel 8, and the second flow channel 9 is composed of a connecting pipe.

[0026] An adjusting spring with a preset elastic coefficient is provided in the balance adjusting cavity 10. One end of the adjusting spring is connected to the outer wall of the outer shell, and the other end is connected to the upper end face of the adjusting piston 13. The adjusting spring is sleeved on the outer periphery of the adjusting valve core 14.

[0027] Furthermore, a cutout 15 is provided on the partition 6. The cutout 15 is located on the outer periphery of the vortex impeller 5 and includes a first cutout groove 16 and a second cutout groove 17.

[0028] like Figure 2-3 As shown, the first notch 16 is a V-shaped notch, and the top surface of the first notch 16 is located on the inner circumferential surface of the inlet pipe 2. The second notch 17 is a U-shaped notch with a pointed bottom end, and the top surface of the second notch 17 is opposite to the outer circumferential surface of the vortex impeller 5.

[0029] The circumferential depth of the cut portion 15 is greater than the radial depth of the cut portion 15, or the circumferential depth of the second cut groove 17 is greater than the radial depth of the first cut groove 16.

[0030] The maximum circumferential length of the cut portion 15 is 0.5-0.8 times the circumferential length of the corresponding position of the partition portion 6.

[0031] The gas-liquid mixing pump is a vortex pump, which can be used to pump liquids or gas-liquid mixtures.

[0032] The present invention discloses a high-efficiency gas-liquid mixing pump, which, through the design of the cut-out portion 15, can promote partial backflow from the outlet pipe 3 side to the inlet pipe 2 side and increase the flow rate at the inlet end of the pump cavity flow channel 7, thereby adjusting / balancing the pressure difference and flow resistance of the pump cavity and improving the efficiency of the gas-liquid mixing pump.

[0033] This invention discloses a high-efficiency gas-liquid mixing pump. Through the design of a balancing adjustment mechanism, it can regulate / balance the pressure difference and flow resistance in the pump chamber during unstable operating conditions (such as abnormal stop phases, abnormal pressure / flow rate changes, and start-up phases), thereby improving the hydraulic performance and pumping efficiency of the gas-liquid mixture, as well as enhancing the pump's operational stability. The design of the cut-out section promotes partial backflow from the outlet pipe side to the inlet pipe side and increases the inlet flow rate of the pump chamber flow channel, thus regulating / balancing the pressure difference and flow resistance in the pump chamber and improving the efficiency of the gas-liquid mixing pump.

[0034] 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 high-efficiency gas-liquid mixing pump, comprising a pump body (1), an inlet pipe (2), an outlet pipe (3), a pump shell (4), a vortex impeller (5), a partition (6), a pump cavity flow channel (7), and a motor (M), wherein the pump body is mounted at one end of the motor, the vortex impeller is connected with an output shaft of the motor, the inlet pipe and the outlet pipe are arranged on the pump shell in a radial direction, the vortex impeller and the pump shell form the pump cavity flow channel, and the partition is arranged between the inlet pipe and the outlet pipe. characterized in that The high-efficiency gas-liquid mixing pump further comprises a balance adjusting mechanism, which comprises a first flow channel (8), a second flow channel (9), a balance adjusting cavity (10), a tapered communication hole (11), a third flow channel (12), and an adjusting valve core (14), wherein one end of the first flow channel is in communication with the outlet pipe through the communication hole, the other end is in communication with the pump cavity flow channel through the tapered communication hole on the first side, and the other end is in communication with the balance adjusting cavity through the third flow channel on the second side; one end of the second flow channel is in communication with the inlet pipe through the communication hole, and the other end is in communication with the balance adjusting cavity through the communication hole. The balance adjusting cavity (10) is arranged at the bottom end of the pump shell, and comprises a first cavity and a second cavity, which are separated by an adjusting piston (13), wherein the first cavity is located above the second cavity, the second side of the other end of the first flow channel (8) is in communication with the second cavity through the third flow channel, the other end of the second flow channel (9) is in communication with the first cavity through the communication hole, the upper end of the adjusting piston is provided with the adjusting valve core, the adjusting valve core is arranged in a radial direction, the upper end of the adjusting valve core has a tapered section which is matched with the tapered communication hole, the adjusting valve core (14) can move up and down under the action of the liquid pressure difference, and the adjusting valve core can open or close the tapered communication hole (11). The first flow channel (8) is arranged along the outer periphery of the pump shell and is formed by two layers of shells, i.e., the first flow channel is formed between the outer shell and the pump shell, and the second flow channel (9) is formed by a communication pipe.

2. A high-efficiency gas-liquid mixing pump as claimed in claim 1, characterized in that, An adjusting spring with a preset elastic coefficient is arranged in the balance adjusting cavity (10), one end of the adjusting spring is connected to the outer sidewall of the outer shell, the other end is connected to the upper end surface of the adjusting piston (13), and the adjusting spring is sleeved on the outer periphery of the adjusting valve core (14).

3. A high-efficiency gas-liquid mixing pump as claimed in claim 1, characterized in that, The partition (6) is provided with a cutout portion (15) which is arranged on the outer periphery of the vortex impeller (5), and the cutout portion comprises a first cutout groove (16) and a second cutout groove (17).

4. A high-efficiency gas-liquid mixing pump as claimed in claim 3, characterized in that, The first cutout groove (16) is a V-shaped cutout groove, and the top surface of the first cutout groove is located on the inner periphery of the inlet pipe (2); the second cutout groove (17) is a U-shaped cutout groove with a bottom end sharp portion, and the top surface of the second cutout groove is arranged opposite to the outer periphery of the vortex impeller (5).

5. A high-efficiency gas-liquid mixing pump as claimed in claim 4, characterized in that, The circumferential depth of the cutout portion (15) is greater than the radial depth of the cutout portion, or the circumferential depth of the second cutout groove (17) is greater than the radial depth of the first cutout groove (16).

6. A high-efficiency gas-liquid mixing pump as claimed in claim 5, characterized in that, The maximum circumferential length of the cutout portion (15) is 0.4-0.9 times the circumferential length of the corresponding position of the partition (6).

7. A high-efficiency gas-liquid mixing pump as claimed in claim 1, characterized in that, The gas-liquid mixing pump is a vortex pump.

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