A new type of high-efficiency self-priming pump that can pump gas intermittently

Abstract

The utility model discloses a novel high-efficiency self-priming pump which is not afraid of gas and can intermittently draw suction, belongs to the technical field of self-priming pumps, comprises a pump body, a liquid outlet pipe is arranged at the top of the pump body, a stepper motor is fixedly installed at the bottom of the pump body, the output shaft of the stepper motor is fixedly connected with a rotating rod, the outer surface of the rotating rod is rotatably connected to the outer side wall of the pump body through a rotating shaft, the other end of the rotating rod passes through the pump body and is fixedly connected with an impeller, a liquid inlet pipe is arranged on the side of the pump body away from the stepper motor, a one-way valve is installed on the outer surface of the liquid inlet pipe, a cover plate is arranged at the top of the pump body, a liquid adding assembly and a gas-liquid balance assembly are arranged on the upper surface of the cover plate, a liquid storage chamber, a gas-liquid separation chamber and a high-pressure chamber are respectively opened inside the pump body, thereby improving the stability of the self-priming pump during operation, realizing intermittent suction and being able to work continuously without secondary emptying after inhaling air, thereby improving the working efficiency of the self-priming pump.

Description

Technical Field

[0001] The utility model relates to the technical field of self-priming pumps, in particular to a novel high-efficiency self-priming pump which can intermittently pump gas without fear of gas. Background Art

[0002] The self-priming pump is a self-priming centrifugal pump. It has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long life, and strong self-priming ability. It is suitable for various industries such as metallurgy, chemical industry, pharmaceuticals, and environmental protection.

[0003] Existing self-priming pumps generally draw gas and liquid into the inner cavity of the pump body at the same time when in use. When the gas content inside the pump body is large, it is easy to cause the self-priming pump to interrupt its operation. At the same time, when the self-priming pump is started again, the staff needs to add liquid to empty it before it can continue to work, resulting in a decrease in the working efficiency of the self-priming pump.

[0004] According to a self-priming pump provided by announcement number: CN217462682U, it relates to the technical field of self-priming pumps, improves the existing self-priming pumps, most of which lack a filtering structure, which easily causes the problem of pump body blockage, including a base, a pump body, a filter box and a filter screen, the two filter boxes are connected to a first connecting pipe on one side away from the pump body, the two first connecting pipes are connected to a first three-way pipe at one end away from the filter box, the two filter boxes are connected to a second connecting pipe at one end away from the first connecting pipe, the two second connecting pipes are connected to a second three-way pipe at one end away from the filter box, and the second three-way pipe is connected to the water inlet. In this application, through the arrangement of the filter box, the filter screen, the first connecting pipe, the first three-way pipe, the second connecting pipe and the second three-way pipe, the filter screen in the filter box can intercept and filter impurities such as garbage in the water, thereby reducing impurities entering the pump body, making the pump body less likely to be blocked, improving the working efficiency of the pump body, and saving energy consumption.

[0005] According to the self-priming pump introduced above, when the internal gas content of the pump body is large, it is easy to cause the self-priming pump to interrupt its operation. At the same time, when the self-priming pump is started again, the staff needs to add liquid to empty the gas before it can continue to work, resulting in a decrease in the working efficiency of the self-priming pump. Therefore, we need to propose a new type of high-efficiency self-priming pump that is not afraid of gas and can be pumped intermittently. Utility Model Content

[0006] The utility model aims to provide a novel high-efficiency self-priming pump which is not afraid of gas and can intermittently pump. By setting a one-way valve, the suction pipe is sealed when the self-priming pump is stopped to avoid liquid reflux, so that a certain amount of liquid is contained in the liquid outlet cavity. Liquid can be added to the high-pressure cavity through the liquid adding component, and the pressure inside the high-pressure cavity is increased through the cooperation of the gas-liquid balance component, so that the liquid flows into the liquid storage cavity to supply liquid to the impeller, thereby improving the stability of the self-priming pump during operation, realizing intermittent suction and being able to work continuously after inhaling air without secondary emptying, thereby improving the working efficiency of the self-priming pump, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a new type of high-efficiency self-priming pump that is not afraid of gas and can intermittently pump, comprising a pump body, a liquid outlet pipe is arranged at the top of the pump body, a stepper motor is fixedly installed at the bottom of the pump body, the output shaft of the stepper motor is fixedly connected to a rotating rod, the outer surface of the rotating rod is rotatably connected to the outer side wall of the pump body through a rotating shaft, the other end of the rotating rod passes through the pump body and is fixedly connected to an impeller, a liquid inlet pipe is arranged on the side of the pump body away from the stepper motor, a one-way valve is installed on the outer surface of the liquid inlet pipe, a cover plate is arranged at the top of the pump body, a liquid adding assembly and a gas-liquid balance assembly for controlling the gas pressure of the pump body are arranged on the upper surface of the cover plate, a base is fixedly connected to the lower surface of the pump body, and a liquid storage chamber, a gas-liquid separation chamber and a high-pressure chamber are respectively provided inside the pump body.

[0008] Preferably, a gas-liquid separation tube is provided at the bottom end of the pump body, one end of the gas-liquid separation tube passes through the pump body and is connected to the inner cavity of the gas-liquid separation chamber, and the other end of the gas-liquid separation tube passes through the pump body and is connected to the inner cavity of the high-pressure chamber.

[0009] Preferably, a liquid inlet is provided at the top of the liquid inlet pipe, and three groups of the liquid inlet are provided, and the three groups of the liquid inlet are symmetrically distributed on the upper surface of the liquid inlet pipe.

[0010] Preferably, an electric motor is fixedly mounted on the outer surface of the liquid outlet pipe, and a connecting rod is fixedly connected to the output end of the electric motor. The other end of the connecting rod passes through the liquid outlet pipe and is rotatably connected to the inner wall of the liquid outlet pipe through a rotating shaft. A sealing plate is provided on the outer surface of the connecting rod.

[0011] Preferably, the gas-liquid balance component includes an air pressure pump, which is fixedly connected to the upper surface of the cover plate through a mounting bracket, a connecting pipe is provided at one end of the air pressure pump, the other end of the connecting pipe passes through the pump body and is connected to the inner cavity of the high-pressure chamber, a pressure flow meter is provided on the outer surface of the connecting pipe, and an air intake pipe is provided at the other end of the air pressure pump.

[0012] Preferably, the liquid adding assembly includes a liquid storage tank, which is fixedly mounted on the upper surface of the cover plate, the bottom end of the liquid storage tank is connected to a liquid delivery pipe, the other end of the liquid delivery pipe is connected to the inner cavity of the high-pressure chamber, and a control valve is provided on the outer surface of the liquid delivery pipe.

[0013] Preferably, a notch is provided on the surface of the liquid storage tank, a transparent glass plate is embedded in the inner cavity of the notch of the liquid storage tank, and scale lines are provided on the surface of the transparent glass plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model provides a new type of high-efficiency self-priming pump that is not afraid of gas and can be pumped intermittently. When the self-priming pump is stopped, a one-way valve installed at the water suction port is used for sealing to ensure that the pump cavity is filled with a certain amount of liquid at any time period, which is convenient for the self-priming pump to be started again.

[0016] 2. The utility model provides a new type of high-efficiency self-priming pump which can intermittently pump gas without fear. Through the cooperation of the gas-liquid separation chamber and the liquid outlet pipe, the sucked gas will be separated in the gas-liquid separation chamber, and the gas will be discharged into the high-pressure chamber through the gas-liquid separation pipe and discharged through the liquid outlet pipe, thereby ensuring the vacuum degree of the impeller inlet. Since a certain amount of liquid is always stored in the liquid storage chamber, the liquid suction area of ​​the pump impeller can always be in a vacuum state, thereby realizing continuous liquid supply.

[0017] 3. The utility model provides a new type of high-efficiency self-priming pump that is not afraid of gas and can be pumped intermittently. Liquid can be added to the high-pressure chamber through the liquid adding component. Through the cooperation of the gas-liquid balance component, the pressure inside the high-pressure chamber is increased, so that the liquid flows into the liquid storage chamber to supply liquid to the impeller, thereby realizing the continuous operation of the pump.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the internal structure of the pump body of the utility model;

[0020] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the utility model from a top view;

[0022] Figure 4 It is a structural schematic diagram of a local cross-sectional structure of the utility model;

[0023] Figure 5 It is a structural schematic diagram of a partial cross-sectional structure of the liquid outlet pipe of the utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the liquid inlet pipe of the utility model when viewed from above.

[0025] In the figure: 1. pump body; 2. liquid outlet pipe; 3. stepper motor; 4. rotating rod; 5. impeller; 6. liquid inlet pipe; 7. one-way valve; 8. cover plate; 9. liquid adding assembly; 91. liquid storage tank; 92. liquid delivery pipe; 93. control valve; 10. gas-liquid balance assembly; 101. air pressure pump; 102. connecting pipe; 103. pressure flow meter; 104. suction pipe; 11. base; 12. liquid storage chamber; 13. gas-liquid separation chamber; 14. high-pressure chamber; 15. gas-liquid separation tube; 16. liquid inlet; 17. electric motor; 18. connecting rod; 19. sealing plate; 20. transparent glass plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-6 The utility model provides a technical solution: a new type of high-efficiency self-priming pump that is not afraid of gas and can be sucked intermittently, including a pump body 1, a liquid outlet pipe 2 is arranged at the top of the pump body 1, a stepper motor 3 is fixedly installed at the bottom of the pump body 1, and the output shaft of the stepper motor 3 is fixedly connected with a rotating rod 4, the outer surface of the rotating rod 4 is rotatably connected to the outer wall of the pump body 1 through a rotating shaft, and the other end of the rotating rod 4 passes through the pump body 1 and is fixedly connected with an impeller 5, a liquid inlet pipe 6 is arranged on the side of the pump body 1 away from the stepper motor 3, a one-way valve 7 is installed on the outer surface of the liquid inlet pipe 6, a cover plate 8 is arranged at the top of the pump body 1, a liquid adding component 9 and a gas-liquid balance component 10 for controlling the gas pressure of the pump body 1 are arranged on the upper surface of the cover plate 8, a base 11 is fixedly connected to the lower surface of the pump body 1, and a liquid storage chamber 12, a gas-liquid separation chamber 13 and a high-pressure chamber 14 are respectively opened inside the pump body 1;

[0028] During operation, the liquid adding component 9 is started to inject liquid into the high-pressure chamber 14, and then the gas-liquid balance component 10 is started to increase the pressure in the high-pressure chamber 14. The liquid flows into the liquid storage chamber 12 by its own weight and the pressure it is subjected to, so that the liquid storage tank is filled with liquid. The stepping motor 3 is started to drive the impeller 5 to rotate through the rotating rod 4, so that the self-priming pump extracts the liquid. When pumping liquid, the inhaled gas will be separated in the gas-liquid separation chamber 13 through the cooperation of the gas-liquid separation chamber 13 and the liquid outlet pipe 2, and the gas is discharged into the high-pressure chamber 14 through the gas-liquid separation pipe 15 and discharged through the liquid outlet pipe 2, thereby ensuring the vacuum degree of the impeller 5 inlet. When the self-priming pump is stopped, the one-way valve 7 installed at the water suction port is used for sealing to ensure that the pump chamber is filled with a certain amount of liquid at any time period, so as to facilitate the restart of the self-priming pump, thereby improving the stability of the self-priming pump during operation, realizing intermittent suction and being able to work continuously without secondary emptying after inhaling air, thereby improving the working efficiency of the self-priming pump.

[0029] A gas-liquid separation tube 15 is provided at the bottom end of the pump body 1. One end of the gas-liquid separation tube 15 passes through the pump body 1 and is connected to the inner cavity of the gas-liquid separation chamber 13. The other end of the gas-liquid separation tube 15 passes through the pump body 1 and is connected to the inner cavity of the high-pressure chamber 14. Through the setting of the gas separation tube, the inhaled gas will be separated in the gas-liquid separation chamber 13, and the gas will be discharged into the high-pressure chamber 14 through the gas-liquid separation tube 15 and discharged through the liquid outlet pipe 2, thereby ensuring the vacuum degree of the impeller 5 inlet.

[0030] A liquid inlet 16 is provided at the top of the liquid inlet pipe 6, and three groups of liquid inlets 16 are arranged. The three groups of liquid inlets 16 are symmetrically distributed on the upper surface of the liquid inlet pipe 6. Through the arrangement of the three groups of liquid inlets 16, when the self-priming pump extracts the liquid, the three groups of liquid inlets 16 can simultaneously extract the liquid, thereby improving the liquid suction efficiency of the self-priming pump.

[0031] An electric motor 17 is fixedly installed on the outer surface of the liquid outlet pipe 2, and a connecting rod 18 is fixedly connected to the output end of the electric motor 17. The other end of the connecting rod 18 passes through the liquid outlet pipe 2 and is rotatably connected to the inner wall of the liquid outlet pipe 2 through a rotating shaft. A sealing plate 19 is provided on the outer surface of the connecting rod 18. Starting the electric motor 17 can drive the connecting rod 18 to rotate, and the connecting rod 18 drives the sealing plate 19 to rotate, and the angle of the sealing plate 19 on the liquid outlet pipe 2 is adjusted to realize the closing and opening states of the liquid outlet pipe 2. When the pressure in the high-pressure chamber 14 is increased, the liquid outlet pipe 2 is closed, and the liquid outlet pipe 2 is opened when discharging liquid and exhausting air.

[0032] The gas-liquid balance component 10 includes an air pressure pump 101, which is fixedly connected to the upper surface of the cover plate 8 through a mounting frame. A connecting pipe 102 is provided at one end of the air pressure pump 101, and the other end of the connecting pipe 102 passes through the pump body 1 and is connected to the inner cavity of the high-pressure chamber 14. A pressure flow meter 103 is provided on the outer surface of the connecting pipe 102, and an intake pipe 104 is provided at the other end of the air pressure pump 101. When the air pressure pump 101 is started, air is sucked in through the intake pipe 104, and at the same time, gas is sent into the interior of the high-pressure chamber 14 through the connecting pipe 102, thereby increasing the gas pressure intensity in the high-pressure chamber 14. The setting of the pressure flow meter 103 facilitates the staff to observe the pressure intensity in the high-pressure pump and adjust the gas pressure.

[0033] The liquid adding assembly 9 includes a liquid storage tank 91, which is fixedly mounted on the upper surface of the cover plate 8. The bottom end of the liquid storage tank 91 is connected to a liquid delivery pipe 92, the other end of the liquid delivery pipe 92 is connected to the inner cavity of the high-pressure chamber 14, and a control valve 93 is provided on the outer surface of the liquid delivery pipe 92. When the control valve 93 is opened, the liquid in the liquid storage tank 91 is delivered into the high-pressure chamber 14 through the liquid delivery pipe 92.

[0034] A notch is provided on the surface of the liquid storage tank 91, and a transparent glass plate 20 is embedded in the inner cavity of the notch of the liquid storage tank 91. Scale lines are provided on the surface of the transparent glass plate 20. The setting of the glass plate facilitates the staff to observe the height of the liquid level in the liquid storage tank 91 to avoid the liquid level in the liquid storage tank 91 being too low.

[0035] When in use: When working, open the control valve 93 to open the liquid delivery pipe 92, so that the liquid in the liquid storage tank 91 flows into the high-pressure chamber 14 through the liquid delivery pipe 92, and then start the air pressure pump 101 to absorb air through the suction pipe 104, and at the same time, send the gas into the high-pressure chamber 14 through the connecting pipe 102, so as to increase the gas pressure intensity in the high-pressure chamber 14. The liquid flows into the liquid storage chamber 12 by its own weight and the pressure it receives, so that the liquid storage tank is filled with liquid. Start the stepper motor 3 to drive the impeller 5 to rotate through the rotating rod 4, so that the self-priming pump extracts the liquid. When the liquid is extracted, the liquid The gas flows into the liquid storage chamber 12 through the liquid inlet pipe 6, and the inhaled gas is separated in the gas-liquid separation chamber 13. The gas is discharged into the high-pressure chamber 14 through the gas-liquid separation pipe 15 and discharged through the liquid outlet pipe 2, thereby ensuring the vacuum degree of the impeller 5 inlet. When the self-priming pump is shut down, the one-way valve 7 installed at the water suction port is used for sealing to ensure that the pump chamber is filled with a certain amount of liquid at any time period, which is convenient for the self-priming pump to be restarted, thereby improving the stability of the self-priming pump during operation, realizing intermittent suction, and being able to work continuously after inhaling air without secondary emptying, thereby improving the working efficiency of the self-priming pump.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel high-efficiency self-priming pump capable of intermittently pumping gas without fear of gas, comprising a pump body (1), characterized in that: The top end of the pump body (1) is provided with a liquid outlet pipe (2), the bottom end of the pump body (1) is fixedly mounted with a stepper motor (3), the output shaft of the stepper motor (3) is fixedly connected with a rotating rod (4), the outer surface of the rotating rod (4) is rotatably connected with the outer wall of the pump body (1) via a rotating shaft, the other end of the rotating rod (4) passes through the pump body (1) and is fixedly connected with an impeller (5), a liquid inlet pipe (6) is provided on the side of the pump body (1) away from the stepper motor (3), a one-way valve (7) is installed on the outer surface of the liquid inlet pipe (6), the top end of the pump body (1) is provided with a cover plate (8), the upper surface of the cover plate (8) is provided with a liquid adding assembly (9) and a gas-liquid balance assembly (10) for controlling the gas pressure of the pump body (1), the lower surface of the pump body (1) is fixedly connected with a base (11), and the interior of the pump body (1) is respectively provided with a liquid storage chamber (12), a gas-liquid separation chamber (13) and a high-pressure chamber (14).

2. According to claim 1, a new type of high-efficiency self-priming pump that is not afraid of gas and can be pumped intermittently is characterized by: A gas-liquid separation tube (15) is provided at the bottom end of the pump body (1), one end of the gas-liquid separation tube (15) passes through the pump body (1) and is connected to the inner cavity of the gas-liquid separation chamber (13), and the other end of the gas-liquid separation tube (15) passes through the pump body (1) and is connected to the inner cavity of the high-pressure chamber (14).

3. According to claim 1, a new type of high-efficiency self-priming pump that is not afraid of gas and can be pumped intermittently is characterized by: The top of the liquid inlet pipe (6) is provided with a liquid inlet (16), and the liquid inlet (16) is provided in three groups, and the three groups of liquid inlet (16) are symmetrically distributed on the upper surface of the liquid inlet pipe (6).

4. According to claim 1, a new type of high-efficiency self-priming pump that is not afraid of gas and can be pumped intermittently is characterized by: An electric motor (17) is fixedly mounted on the outer surface of the liquid outlet pipe (2); an output end of the electric motor (17) is fixedly connected to a connecting rod (18); the other end of the connecting rod (18) passes through the liquid outlet pipe (2) and is rotatably connected to the inner wall of the liquid outlet pipe (2) via a rotating shaft; a sealing plate (19) is provided on the outer surface of the connecting rod (18).

5. According to claim 1, a new type of high-efficiency self-priming pump that is not afraid of gas and can be pumped intermittently is characterized by: The gas-liquid balance component (10) comprises an air pressure pump (101), the air pressure pump (101) being fixedly connected to the upper surface of the cover plate (8) via a mounting frame, a connecting pipe (102) being provided at one end of the air pressure pump (101), the other end of the connecting pipe (102) passing through the pump body (1) and being connected to the inner cavity of the high-pressure chamber (14), a pressure flow meter (103) being provided on the outer surface of the connecting pipe (102), and an air intake pipe (104) being provided at the other end of the air pressure pump (101).

6. According to claim 1, a new type of high-efficiency self-priming pump that is not afraid of gas and can be pumped intermittently is characterized by: The liquid adding assembly (9) comprises a liquid storage tank (91), the liquid storage tank (91) being fixedly mounted on the upper surface of the cover plate (8), the bottom end of the liquid storage tank (91) being connected to a liquid delivery pipe (92), the other end of the liquid delivery pipe (92) being connected to the inner cavity of the high-pressure chamber (14), and the outer surface of the liquid delivery pipe (92) being provided with a control valve (93).

7. A novel high-efficiency self-priming pump capable of intermittently pumping gas without fear of gas according to claim 6, characterized in that: The surface of the liquid storage tank (91) is provided with a notch, the inner cavity of the notch of the liquid storage tank (91) is embedded with a transparent glass plate (20), and the surface of the transparent glass plate (20) is provided with scale lines.

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