Gas booster pump

Abstract

The utility model discloses a gas booster pump which comprises a cylinder body, a front end cover and a rear end cover, the front end cover and the rear end cover are arranged at the front end and the rear end of the cylinder body, a front middle cover and a rear middle cover are arranged on the cylinder body in a spaced mode and divide the interior of the cylinder body into three piston cavities, pistons are arranged in the three piston cavities respectively, and the pistons are connected through piston rods. The front middle cover is communicated with a low-pressure air inlet and a high-pressure air outlet, the low-pressure air inlet and the high-pressure air outlet are connected with a pressurizing pipeline, the cylinder body is provided with an electromagnetic valve and a control pipeline, and the electromagnetic valve is connected with the control pipeline to control compressed air to drive the piston to reciprocate in the piston cavity. And a piston in a piston cavity on one side of the front middle cover compresses the introduced pressurized air flow, and the pressurized air flow is output from a high-pressure air outlet. According to the gas booster pump provided by the utility model, airflow input into the cylinder body is switched through the electromagnetic valve to drive the piston to do reciprocating motion, so that compression and pressurization are carried out on the booster chamber communicated between the side surface of the front middle cover and the piston, and the gas booster pump has the advantages of reliable action, rapid switching and high efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of booster pumps, in particular to a gas booster pump. Background Art

[0002] The gas booster pump uses the low-pressure gas at the large-area piston end to drive the high-pressure fluid at the small-area piston end. It can be used to compress air and other gases, and the output air pressure can be adjusted steplessly by the driving air pressure. The existing gas booster pump drives the piston to circulate and reciprocate in the piston chamber by controlling the airflow, compressing part of the introduced gas, and then replenishing it to the output pipeline to achieve a boosting effect. However, when the existing booster pump is in use, its piston may not be able to complete the stroke of the piston in the piston chamber, resulting in more reciprocating motion when compressing the gas to reach the corresponding output pressure, and its working efficiency is relatively low. Utility Model Content

[0003] The utility model aims to provide a gas booster pump, which drives the piston to reciprocate by switching the airflow input into the cylinder body through an electromagnetic valve, thereby compressing and boosting the air in the booster chamber between the side of the front middle cover and the piston, and has the advantages of reliable action, rapid switching and high efficiency.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a gas booster pump, including a cylinder body, a front cover and a rear cover arranged at the front and rear ends of the cylinder body, a front middle cover and a rear middle cover are arranged on the cylinder body at intervals, and the interior of the cylinder body is divided into three piston chambers, each of the three piston chambers is provided with a piston, and the pistons are connected by a piston rod, a low-pressure air inlet and a high-pressure air outlet are connected on the front middle cover, and the low-pressure air inlet and the high-pressure air outlet are connected to a boosting pipeline, a solenoid valve and a control pipeline are provided on the cylinder body, and the solenoid valve is connected to the control pipeline to control the compressed gas to drive the piston to reciprocate in the piston chamber, so that the piston in the piston chamber on one side of the front middle cover compresses the introduced boosted airflow and outputs it from the high-pressure outlet.

[0005] The utility model adopts the above technical solution, and the compressed gas connected to the pipeline is switched by the solenoid valve, and the compressed gas is passed into the piston chambers located on both sides of the piston to drive the piston to reciprocate. The pistons are linked by the piston rod, and the reciprocating movement of the piston in the piston chamber compresses and pressurizes the pressurized airflow passed into one of the piston chambers, so that it is output from the high-pressure outlet to achieve the purpose of pressurization. By switching the solenoid valve, the reciprocating movement of the piston is controlled to increase the pressure, and the use of electrical control can ensure that the piston travels to the end, and the working efficiency is high.

[0006] The gas booster pump is provided with a first one-way valve and a second one-way valve on the booster pipeline, so that the compressed airflow from the side of the front middle cover can only be output from the high-pressure outlet. The first one-way valve and the second one-way valve are connected to the booster pipeline by means of their one-way conduction, so that the input airflow connected to the booster pipeline can only enter the chamber between the front middle cover and the piston, and can only be output from the high-pressure outlet after the piston compresses the airflow and boosts the pressure, thereby playing a role in controlling the flow direction of the airflow.

[0007] In the above-mentioned gas booster pump, the first one-way valve unilaterally guides the booster pipeline gas flow through the front middle cover into the piston chamber. The gas flow input from the booster pipeline can only enter the piston chamber through the front middle cover after passing through the first one-way valve.

[0008] In the above-mentioned gas booster pump, the second one-way valve unilaterally guides the pressurized air flow to flow out of the high-pressure air outlet through the front middle cover. The air flow compressed and pressurized by the piston can only be output from the high-pressure air outlet through the second one-way valve. The first one-way valve and the second one-way valve play a role in preventing the air flow from flowing back.

[0009] The one-way valve of the above-mentioned gas booster pump includes a retainer, a spring and a steel ball. The retainer is provided with an axially penetrating valve cavity. The steel ball and the spring are assembled in the valve cavity. The two ends of the spring are against the inner wall of the valve cavity and the outer surface of the steel ball. When the airflow passes through one side of the retainer, the airflow pushes the steel ball to compress the spring, so that the steel ball loosens the tight seal with the retainer port, and the airflow can pass through the gap between the steel ball and the retainer port. When the airflow is input from the other end of the retainer, the spring is used to fix the steel ball at the edge of the retainer port to play a sealing role. It has the advantages of simple structure and reliable operation.

[0010] In the above-mentioned gas booster pump, two magnetic switches are provided on the outer wall of one piston chamber, and a magnetic ring is provided on the piston in the corresponding piston chamber. The magnetic switch is triggered when the magnetic ring reciprocates in the piston chamber. The magnetic switch is used to detect the movement position of the piston, which can ensure that the piston can complete its stroke in the piston chamber and improve efficiency.

[0011] The above-mentioned gas booster pump has a controller outside the cylinder body, and the controller controls the solenoid valve to switch the control pipeline according to the trigger signal of the magnetic switch. When the piston is in motion, the magnetic ring set on it triggers the magnetic switch. The controller detects the signal of the magnetic switch and controls the solenoid valve to switch the internal conduction condition of the solenoid valve, so that the input airflow drives the piston in the cylinder body to reciprocate.

[0012] The above-mentioned gas booster pump and the solenoid valve are connected to the gas source and the gas source two-piece. The gas source two-piece can play a filtering role. Different two-pieces can be selected according to actual needs to achieve pressure reduction, filtering, and lubrication functions.

[0013] The boosting pipeline of the gas booster pump is also connected to the gas source two-piece. The airflow outputted by the gas source two-piece is inputted into the boosting pipeline, and after entering the piston chamber, it is compressed and pressurized by the piston, and finally outputted from the high-pressure air outlet to realize the boosting function. The output port of the gas source two-piece is connected to the low-pressure air inlet of the boosting pipeline.

[0014] The beneficial effects achieved by the utility model are: three piston chambers and a piston are used in combination to compress the pressurized airflow to achieve a pressurization effect, and the solenoid valve is used to control the reciprocating motion of the piston, so that the piston can accurately complete its stroke in the piston chamber, which has the advantage of high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the appearance structure of a gas booster pump according to an embodiment of the utility model;

[0016] Figure 2 It is a schematic cross-sectional structure diagram of a gas booster pump according to an embodiment of the utility model;

[0017] Figure 3 It is a schematic cross-sectional structure diagram of a gas booster pump according to an embodiment of the utility model along the cross-sectional direction of the front middle cover;

[0018] Figure 4 It is a schematic diagram of the exploded structure of a one-way valve in a gas booster pump according to an embodiment of the utility model.

[0019] Explanation of the reference numerals: cylinder body 1, piston chamber 10, front end cover 11, rear end cover 12, front middle cover 13, rear middle cover 14, piston 15, piston rod 16, magnetic switch 17, magnetic ring 18, boosting pipeline 2, low-pressure air inlet 21, high-pressure air outlet 22, first one-way valve 23, second one-way valve 24, retaining frame 25, spring 26, steel ball 27, valve chamber 28, one-way valve cover plate 29, solenoid valve 3, control pipeline 4, controller 5, air source 6, air source two-piece 7, air port A, air port B, air port C. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Reference Figures 1 to 4As shown, a gas booster pump comprises a cylinder body 1, a front end cover 11 and a rear end cover 12 arranged at the front and rear ends of the cylinder body 1, a front middle cover 13 and a rear middle cover 14 are arranged on the cylinder body 1 at intervals, and the interior of the cylinder body 1 is divided into three piston chambers 10, each of the three piston chambers 10 is provided with a piston 15, and the pistons 15 are connected by a piston rod 16, and a low-pressure air inlet 21 and a high-pressure air outlet 22 are connected on the front middle cover 13, and the low-pressure air inlet 21 and the high-pressure air outlet 22 are connected to a boosting pipeline 2, and a solenoid valve 3 and a control pipeline 4 are arranged on the cylinder body 1, and the solenoid valve 3 is connected to the control pipeline 4 to control the compressed gas to drive the piston 15 to reciprocate in the piston chamber 10, so that the piston 15 in the piston chamber 10 on one side of the front middle cover 13 compresses the introduced boosting airflow and outputs it from the high-pressure air outlet 22.

[0022] The boosting pipeline 2 is provided with a first one-way valve 23 and a second one-way valve 24 , so that the compressed air flow from the side of the front middle cover 13 can only be output from the high-pressure air outlet 22 .

[0023] The first one-way valve 23 unidirectionally guides the air flow of the boosting pipeline 2 to flow into the piston chamber 10 through the front middle cover 13 .

[0024] The second one-way valve 24 unidirectionally guides the pressurized air flow to flow out of the high-pressure air outlet 22 through the front middle cover 13 .

[0025] A one-way valve cover plate 29 is provided on the side wall of the front middle cover 13, and the high-pressure air outlet 22 is provided on the one-way valve cover plate 29. An air port C is also provided on the front middle cover 13, and the air port C is connected to a piston chamber between one side of the front middle cover 13 and the piston 15, and is used to pass the pressurized airflow input from the low-pressure air inlet 21.

[0026] In this embodiment, the one-way valves 23 and 24 include a retaining frame 25, a spring 26 and a steel ball 27. The retaining frame 25 is provided with an axially through-going valve cavity 28. The steel ball 27 and the spring 26 are assembled in the valve cavity 28. The two ends of the spring rest against the inner wall of the valve cavity and the outer surface of the steel ball.

[0027] Two magnetic switches 17 are disposed on the outer wall of one of the piston chambers 10 , and a magnetic ring 18 is disposed on the piston 15 in the corresponding piston chamber 10 . The magnetic ring 18 triggers the magnetic switch when it reciprocates in the piston chamber 10 .

[0028] A controller 5 is disposed outside the cylinder body 1 , and the controller 5 controls the solenoid valve 3 to switch on the control pipeline 4 according to a trigger signal of the magnetic switch 17 .

[0029] The solenoid valve 3 is connected to an air source 6 and an air source double joint 7. The booster pipeline 2 is also connected to the air source double joint 7.

[0030] In this embodiment, the compressed gas generated by the gas source 6 is filtered by the gas source two-piece 7 and then connected to the solenoid valve 3. The solenoid valve 3 conducts the air flow so that the air flow enters the gas port A into the gas source 2. Figure 2 In the piston chamber 10 between the rear end cover 12 and the piston 15 and the piston chamber 10 between the rear middle cover 13 and the piston 15 shown, the piston 10 is pushed to move toward the front end cover 11. At the same time, the air source two-piece 7 is also connected to the booster pipeline 2. The airflow enters the pipeline through the low-pressure air inlet 21, enters the air port C of the front middle cover 13 through the first one-way valve 23, and enters the piston chamber between the two sides of the front middle cover 13 and the piston 15. When the piston 15 moves toward the front end cover 11, the piston 15 compresses the airflow between it and the front middle cover 13, so that the airflow is compressed and flows out from the air port C on one side of the front middle cover 13, and is one-way cut-off by the first one-way valve 23, and one-way conduction by the second one-way valve 24, and then outputs from the high-pressure air outlet 22.

[0031] When the magnetic ring 18 on the piston 15 triggers the magnetic switch 17 on the outer wall of the cylinder 1, the controller 5 detects the trigger signal of the magnetic switch 17, determines that the piston 15 has completed its stroke, and controls the solenoid valve 3 to switch its internal pipeline, switching the compressed air flow from the air port B to the Figure 2 In the piston chamber 10 between the rear middle cover 14 and the piston 10, the piston 15 is pushed to move toward the rear end cover 12. At the same time, the airflow enters the boosting pipeline 2 from the low-pressure air inlet 21, and passes through the first one-way valve 23 for one-way conduction and the second one-way valve 24 for one-way blocking, and passes through the front middle cover 13 to enter the piston chamber 10 between the two sides of the front middle cover 13 and the piston 15. When the piston 15 moves toward the rear end cover 12, the piston 15 compresses the airflow between it and the front middle cover 13, so that the airflow is compressed and flows out from the air port C on the other side of the front middle cover 13, passes through the one-way blocking of the first one-way valve 23, and the one-way conduction of the second one-way valve 24, and is output from the high-pressure air outlet 22.

[0032] In the process of the piston 15 being driven to reciprocate by the airflow generated by the air source 6, the low-pressure airflow is continuously compressed, so that it is compressed and pressurized and then output from the high-pressure air outlet 22, thereby achieving the purpose of pressurization. In this process, the magnetic switch 17 is arranged on the outer wall of the cylinder body 1 to detect the movement position of the magnetic ring 18 on the piston 15, so that the piston 15 can complete its entire stroke in the piston chamber 10, thereby improving work efficiency.

[0033] In summary, the utility model has been made into actual samples and tested for multiple times as described in the specification and the illustrations. From the results of the test, it can be proved that the utility model can achieve its intended purpose, and its practical value is beyond doubt. The above embodiments are only used to illustrate the utility model, and are not intended to limit the utility model in any form. Any person with ordinary knowledge in the technical field can make equivalent embodiments that are partially changed or modified by the technical content disclosed in the utility model without departing from the scope of the technical features of the utility model, and they still fall within the scope of the technical features of the utility model without departing from the technical features of the utility model.

Claims

1. A gas booster pump, comprising a cylinder body (1), a front end cover (11) and a rear end cover (12) provided at the front and rear ends of the cylinder body (1), characterized in that: A front middle cover (13) and a rear middle cover (14) are provided on the cylinder body (1) to separate the interior of the cylinder body (1) into three piston chambers (10). A piston (15) is provided in each of the three piston chambers (10). The pistons (15) are connected via piston rods (16). A low-pressure air inlet (21) and a high-pressure air outlet (22) are connected on the front middle cover (13). The low-pressure air inlet (21) and the high-pressure air outlet (22) are connected to a pressurizing pipeline (2). A solenoid valve (3) and a control pipeline (4) are provided on the cylinder body (1). The solenoid valve (3) is connected to the control pipeline (4) to control the compressed gas to drive the piston (15) to reciprocate in the piston chamber (10), so that the piston (15) in the piston chamber (10) on one side of the front middle cover (13) compresses the introduced pressurized airflow and discharges it from the high-pressure air outlet (22).

2. The gas booster pump according to claim 1, characterized in that: The boosting pipeline (2) is provided with a first one-way valve (23) and a second one-way valve (24), so that the compressed air flow from the side of the front middle cover (13) can only be output from the high-pressure air outlet (22).

3. The gas booster pump according to claim 2, characterized in that: The first one-way valve (23) unidirectionally directs the airflow in the pressurizing pipeline (2) to flow into the piston chamber (10) through the front middle cover (13).

4. The gas booster pump according to claim 2, characterized in that: The second one-way valve (24) unidirectionally guides the pressurized air flow to flow out of the high-pressure air outlet (22) through the front middle cover (13).

5. The gas booster pump according to claim 2, characterized in that: The one-way valve (23, 24) comprises a retainer (25), a spring (26) and a steel ball (27); the retainer (25) is provided with a valve cavity (28) which penetrates axially; the steel ball (27) and the spring (26) are assembled in the valve cavity (28); two ends of the spring abut against the inner wall of the valve cavity and the outer surface of the steel ball.

6. The gas booster pump according to claim 1, characterized in that: Two magnetic switches (17) are provided on the outer wall of one of the piston chambers (10), and a piston (15) in the corresponding piston chamber (10) is provided with a magnetic ring (18). The magnetic ring (18) triggers the magnetic switch when it reciprocates in the piston chamber (10).

7. The gas booster pump according to claim 6, characterized in that: A controller (5) is provided outside the cylinder body (1), and the controller (5) controls the solenoid valve (3) to switch on the control pipeline (4) according to a trigger signal from the magnetic switch (17).

8. The gas booster pump according to any one of claims 1 to 7, characterized in that: The solenoid valve (3) is connected to an air source (6) and an air source second connection piece (7).

9. The gas booster pump according to claim 8, characterized in that: The boost pipeline (2) is also connected to the gas source second connection piece (7).

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