A reversing device of a pneumatic booster pump and a booster pump

Abstract

The utility model discloses a kind of reversing devices of pneumatic control pressure boost pump, including the pressure boost piston being arranged in pressure boost cylinder, the rear end of pressure boost cylinder is equipped with the reversing valve core of axial extension and perpendicular to axial first gas hole, second gas hole, third gas hole, first gas hole and second gas hole are respectively communicated pneumatic control valve, first gas hole is always open air hole;Reversing valve core is equipped with communication groove;Pressure boost piston connects reversing valve core;Pressure boost piston moves reversely and pushes reversing valve core, so that communication groove is communicated first gas hole and second gas hole, gas in first gas hole enters pneumatic control valve and promotes its reversing;Pressure boost piston moves forward and makes communication groove be communicated second gas hole and third gas hole, gas in second gas hole is discharged from third gas hole and promotes pneumatic control valve reversing.The reversing device of the reversing device of pneumatic control pressure boost pump and the piston stroke linkage of pressure boost pump, and pneumatic control valve reversing is controlled by pneumatic mode, structure is ingenious, few parts, high reliability, action is stable, guarantee the pressure boost efficiency of gas pressure boost pump.

Description

Technical Field

[0001] This utility model relates to the technical field of booster pumps, specifically a reversing device for a pneumatically controlled booster pump. Background Technology

[0002] A gas booster pump uses low-pressure gas at a large-area piston end to drive a small-area piston end to generate high-pressure gas. Its operation relies on high-frequency, automated reversing actions. When the piston reaches the end of its stroke, a reversing valve is used to switch the direction of the driving gas source, pushing the piston to move in the opposite direction, forming a continuous boosting cycle.

[0003] Traditional gas booster pump reversing devices have complex structures and numerous parts; for example, valve core reset usually uses a spring reset device, which is susceptible to spring fatigue and aging, leading to reset lag or even failure; the reliability and control accuracy of the reversing device are not high, which reduces the boosting efficiency of the gas booster pump.

[0004] Therefore, the aforementioned technical problems need to be solved. Summary of the Invention

[0005] This utility model addresses the above-mentioned technical problems by providing a reversing device and a booster pump for a pneumatically controlled booster pump. The reversing valve core of the reversing device is directly linked to the piston stroke of the booster pump, and the reversing action of the pneumatically controlled valve is controlled by pneumatic means. It has a compact structure, few parts, high reliability, stable operation, and ensures the boosting efficiency of the gas booster pump.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A reversing device for a pneumatically controlled booster pump includes a booster piston disposed within a booster cylinder. The booster cylinder has an axially extending reversing valve core at its rear end and a first air hole, a second air hole, and a third air hole perpendicular to the axial direction. The first air hole and the second air hole are respectively connected to a pneumatically controlled valve, and the first air hole is a normally open air hole. The reversing valve core has a communicating groove. The booster piston is connected to the reversing valve core.

[0008] When the booster piston moves to the end position of the rear end of the booster cylinder, the booster piston pushes the reversing valve core backward so that the connecting groove connects the first air hole and the second air hole, and the gas enters the pneumatic control valve to cause it to reverse.

[0009] When the booster piston moves to the end position of the front end of the booster cylinder, the booster piston pulls the reversing valve core forward, so that the connecting groove connects the second air hole and the third air hole, and the gas is discharged, causing the pneumatic control valve to reverse.

[0010] The reversing device of this pneumatic booster pump controls the position of its connecting groove to different locations through the linkage between the reversing valve core and the booster piston.

[0011] When the booster piston moves backward to the end position of the rear end of the booster cylinder, it pushes the reversing valve core backward, connecting the first and second air holes through the connecting groove. The gas in the first air hole enters the pneumatic control valve through the connecting groove and the second air hole, causing it to reverse direction. After the pneumatic control valve reverses direction, it causes the booster piston to change its direction of movement and move forward. When the booster piston moves forward to the end position of the front end of the booster cylinder, it pulls the reversing valve core forward, connecting the second and third air holes through the connecting groove. The gas in the second air hole is discharged from the third air hole through the connecting groove, thus causing the pneumatic control valve to reverse direction. After the pneumatic control valve reverses direction, it causes the booster piston to change its direction of movement and move backward. Therefore, the booster piston achieves cyclic reciprocating motion during the continuous reversing of the pneumatic control valve.

[0012] This reversing device controls the reversing action of the pneumatic control valve through pneumatic means. It has a compact structure, few parts, high reliability, and stable operation, thus ensuring the pressurization efficiency of the gas booster pump.

[0013] A further optimized design includes a valve core pull rod with a flange head. The valve core pull rod movably passes through the booster piston and connects to the reversing valve core. When the booster piston pulls the reversing valve core forward, the flange head presses against the booster piston. The booster piston pulls the reversing valve core forward via the valve core pull rod, thereby opening the second and third air holes in the communicating groove of the reversing valve core.

[0014] A further optimized solution includes a valve core pressure plate, which is located inside the rear end of the booster cylinder and positions the reversing valve core for forward movement. Positioning the reversing valve core by the valve core pressure plate ensures that the connecting groove effectively and accurately connects the second and third air holes.

[0015] A further optimization includes a locking connector attached to the booster piston. The head of the locking connector pushes the reversing valve core backward. The head of the locking connector provides a greater thrust relative to the booster piston, ensuring sufficient force for the reversing valve core to move backward.

[0016] In a further optimized design, the rear end of the booster cylinder is provided with a rear cover, and the first air port, second air port, third air port, and reversing valve core are located inside the rear cover. Providing a rear cover at the rear end of the booster cylinder facilitates product manufacturing, installation, and maintenance.

[0017] A booster pump, comprising a reversing device for any of the above-described pneumatic booster pumps.

[0018] In a further optimized design, a high-pressure pipe is coaxially spaced at the front end of the booster cylinder, and a booster rod connected to the booster piston is provided inside the high-pressure pipe.

[0019] In a further optimized design, the booster cylinder is provided with a front vent hole at the front end and a rear vent hole at the rear end; the front vent hole and the rear vent hole are respectively connected to the pneumatic control valve.

[0020] The air control valve switches the air intake of the booster cylinder between the front vent and the rear vent, thereby changing the direction of motion of the booster piston to achieve its cyclic reciprocating motion.

[0021] In a further optimized design, a front cover is provided at the front end of the booster cylinder, and the high-pressure pipe is connected to the front cover. Providing a front cover at the front end of the booster cylinder facilitates product manufacturing, installation, and maintenance.

[0022] In a further optimized design, the high-pressure pipe is equipped with a high-pressure output port and a low-pressure inlet port, both of which are connected to a one-way valve.

[0023] This utility model has the following technical advantages compared with the prior art:

[0024] The reversing device and reversing valve core of this pneumatic booster pump are directly linked to the piston stroke of the booster pump. The reversing action of the pneumatic control valve is controlled by pneumatic means to realize the reciprocating motion of the booster piston. The structure is compact with few parts, has high reliability, and stable operation, which ensures the boosting efficiency of the gas booster pump. It avoids the risk of lag or even failure of the traditional spring valve core reset. Attached Figure Description

[0025] Figure 1 This is a front view of a specific embodiment of the booster pump of this utility model;

[0026] Figure 2 yes Figure 1 Top view;

[0027] Figure 3 yes Figure 1 The left view;

[0028] Figure 4 yes Figure 1 A sectional view;

[0029] Figure 5 yes Figure 4 A view of the booster piston moving to its rear end position;

[0030] Figure 6 yes Figure 4 A view of the booster piston moving to its front-end position;

[0031] Figure 7 yes Figure 4 Exploded view of the booster piston, reversing valve core, and related connecting parts;

[0032] Figure 8 yes Figure 1 The air circuit diagram for the operation of the booster pump.

[0033] In the diagram: 1. Boost cylinder barrel; 2. Boost piston; 3. Reversing valve core; 3a. Connecting groove; 4. First air hole; 5. Second air hole; 6. Third air hole; 7. Pneumatic control valve; 8. Valve core pull rod; 8a. Flange head; 9. Valve core pressure plate; 10. Locking connector; 11. Rear cover; 12. High pressure pipe; 13. Boost rod; 14. Front vent; 15. Rear vent; 16. Front cover; 17. High pressure output port; 18. Low pressure air inlet; 19. Check valve; 20. Air source; 21. Air source dual unit. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0035] like Figures 1 to 8 As shown, this is a specific embodiment of the booster pump of this utility model; wherein Figures 4 to 7 The specific structure of the reversing device of the pneumatic booster pump is shown.

[0036] like Figure 4 As shown, the reversing device of the pneumatic booster pump includes a booster piston 2 disposed in a booster cylinder 1. The rear end of the booster cylinder 1 is provided with an axially extending reversing valve core 3 and a first air hole 4, a second air hole 5, and a third air hole 6 perpendicular to the axial direction. The first air hole 4 and the second air hole 5 are respectively connected to a pneumatic control valve 7. The first air hole 4 is a normally open air hole. The reversing valve core 3 is provided with a connecting groove 3a. The booster piston 2 is connected to the reversing valve core 3.

[0037] like Figure 5 As shown, when the booster piston 2 moves to the end position of the rear end of the booster cylinder 1, the booster piston 2 pushes the reversing valve core 3 backward so that the connecting groove 3a connects the first air hole 4 and the second air hole 5. The gas in the first air hole 4 enters the pneumatic control valve 7 through the connecting groove 3a and the second air hole 5, causing it to reverse.

[0038] like Figure 6 As shown, when the booster piston 2 moves to the end position of the front end of the booster cylinder 1, the booster piston 2 pulls the reversing valve core 3 forward so that the connecting groove 3a connects the second air hole 5 and the third air hole 6. The gas in the second air hole 5 is discharged from the third air hole 6 through the connecting groove 3a, thereby causing the pneumatic control valve 7 to reverse.

[0039] The reversing device of the pneumatic booster pump controls the position of its connecting groove 3a to different locations through the linkage between the reversing valve core 3 and the booster piston 2.

[0040] like Figure 5 and Figure 6As shown, when the booster piston 2 moves backward to the end position of the rear end of the booster cylinder 1, the booster piston 2 pushes the reversing valve core 3 backward. The connecting groove 3a connects the first air hole 4 and the second air hole 5. The gas in the first air hole 4 enters the pneumatic control valve 7 through the connecting groove 3a and the second air hole 5, causing it to reverse. After the pneumatic control valve 7 reverses, it causes the booster piston 2 to change its direction of movement and move forward. When the booster piston 2 moves forward to the end position of the front end of the booster cylinder 1, the booster piston 2 pulls the reversing valve core 3 forward. The connecting groove 3a connects the second air hole 5 and the third air hole 6. The gas in the second air hole 5 is discharged from the third air hole 6 through the connecting groove 3a, thereby causing the pneumatic control valve 7 to reverse. After the pneumatic control valve 7 reverses, it causes the booster piston 2 to change its direction of movement and move backward. Therefore, the booster piston 2 achieves cyclic reciprocating motion during the continuous reversing process of the pneumatic control valve 7.

[0041] The reversing device controls the reversing action of the pneumatic control valve 7 through pneumatic means. It has a compact structure, few parts, high reliability, and stable operation, which ensures the pressurization efficiency of the gas booster pump.

[0042] like Figure 4 and Figure 7 As shown, the reversing device of the pneumatic booster pump also includes a valve core rod 8, which has a flange head 8a. The valve core rod 8 movably passes through the booster piston 2 and is connected to the reversing valve core 3. When the booster piston 2 pulls the reversing valve core 3 forward, the flange head 8a presses against the booster piston 2. The booster piston 2 pulls the reversing valve core 3 forward through the valve core rod 8, thereby causing the connecting groove 3a of the reversing valve core 3 to open the second air hole 5 and the third air hole 6.

[0043] like Figure 4 As shown, the reversing device of the pneumatic booster pump also includes a valve core pressure plate 9. The valve core pressure plate 9 is located inside the rear end of the booster cylinder 1 and positions the reversing valve core 3 to move forward. By positioning the reversing valve core 3 to move forward through the valve core pressure plate 9, the connecting groove 3a is ensured to effectively and accurately conduct the second air hole 5 and the third air hole 6.

[0044] like Figure 4 and Figure 7 As shown, the reversing device of the pneumatic booster pump also includes a locking connector 10, which is connected to the booster piston 2. The valve core pull rod 8 moves through the locking connector 10. The head of the locking connector 10 pushes the reversing valve core 3 backward; and when the booster piston 2 pulls the reversing valve core 3 forward, the flange head 8a presses against the locking connector 10. The head of the locking connector 10 pushes the reversing valve core 3 with a greater thrust than the booster piston 2, ensuring that the reversing valve core 3 has sufficient thrust to move backward; when the booster piston 2 pulls the reversing valve core 3 forward, the flange head 8a presses against the locking connector 10, with a greater pulling force than when pressed against the booster piston 2.

[0045] like Figure 4 As shown, the rear end of the booster cylinder 1 is provided with a rear cover 11, and the first air port 4, the second air port 5, the third air port 6, and the reversing valve core 3 are located inside the rear cover 11. The valve core pressure plate 9 is fixedly connected to the inner end of the rear cover 11. The rear cover 11 at the rear end of the booster cylinder 1 facilitates the manufacturing, installation, and maintenance of the product.

[0046] This utility model also discloses a booster pump, including the reversing device of the above-mentioned pneumatic booster pump.

[0047] like Figure 1 , Figure 2 and Figure 4 As shown, a high-pressure pipe 12 is coaxially spaced at the front end of the booster cylinder 1. A booster rod 13, connected to the booster piston 2, is located inside the high-pressure pipe 12. The booster rod 13 is locked to the booster piston 2 by a locking connector 10. The booster rod 13 has a clearance hole for the movement of the valve core pull rod 8. A front cover 16 is provided at the front end of the booster cylinder 1, and the high-pressure pipe 12 is connected to the front cover 16. The front cover 16 at the front end of the booster cylinder 1 facilitates product manufacturing, installation, and maintenance. The front cover 16 and the rear cover 11 are respectively sealed to the front and rear ends of the booster cylinder 1 by sealing rings.

[0048] like Figure 8 As shown, the front cover 16 at the front end of the booster cylinder 1 is provided with a front vent hole 14, and the rear cover 11 at the rear end is provided with a rear vent hole 15; the front vent hole 14 and the rear vent hole 15 are respectively connected to the pneumatic control valve 7; the pneumatic control valve 7 is a four-port two-position pneumatic control valve.

[0049] The air control valve 7 switches the air intake of the booster cylinder 1 between the front vent 14 and the rear vent 15, thereby changing the direction of motion of the booster piston 2 to achieve its cyclic reciprocating motion.

[0050] like Figure 2 , Figure 3 and Figure 4 As shown, the high-pressure pipe 12 is equipped with a high-pressure output port 17 and a low-pressure air inlet 18, both of which are connected to a one-way valve 19.

[0051] like Figure 8 As shown, the booster pump also includes an air source 20 and an air source dual unit 21. The air source 20 is connected to the air control valve 7 through the air source dual unit 21.

[0052] The reversing device and reversing valve core of this pneumatic booster pump are directly linked to the piston stroke of the booster pump. The reversing action of the pneumatic control valve is controlled by pneumatic means to realize the reciprocating motion of the booster piston. The structure is compact with few parts, has high reliability, and stable operation, which ensures the boosting efficiency of the gas booster pump. It avoids the risk of lag or even failure of the traditional spring valve core reset.

[0053] In summary, as described in the specification and figures, this utility model has been manufactured into actual samples and subjected to multiple use tests. The test results demonstrate that this utility model achieves its intended purpose, and its practicality is beyond doubt. The embodiments described above are merely for illustrative purposes and are not intended to limit the scope of this utility model. Any equivalent embodiments made by those with common knowledge in the relevant technical field, utilizing the technical content disclosed in this utility model, without departing from the scope of the technical features and similar features disclosed in this utility model, are all within the protection scope of this utility model.

Claims

1. A reversing device for a pneumatically controlled booster pump, characterized in that: The system includes a booster piston (2) disposed within a booster cylinder (1). The booster cylinder (1) has an axially extending reversing valve core (3) at its rear end, as well as a first air hole (4), a second air hole (5), and a third air hole (6) perpendicular to the axial direction. The first air hole (4) and the second air hole (5) are respectively connected to a pneumatic control valve (7). The first air hole (4) is a normally open air hole. The reversing valve core (3) has a communicating groove (3a). The booster piston (2) is connected to the reversing valve core (3). When the booster piston (2) moves to the end position of the rear end of the booster cylinder (1), the booster piston (2) pushes the reversing valve core (3) backward so that the connecting groove (3a) connects the first air hole (4) and the second air hole (5), and the gas enters the pneumatic control valve (7) to cause it to reverse. When the booster piston (2) moves to the end position of the front end of the booster cylinder (1), the booster piston (2) pulls the reversing valve core (3) forward so that the connecting groove (3a) connects the second air hole (5) and the third air hole (6), and the gas is discharged to cause the pneumatic control valve (7) to reverse.

2. The reversing device of the pneumatically controlled booster pump according to claim 1, characterized in that, It also includes a valve core rod (8) having a flange head (8a), the valve core rod (8) being movably inserted through the booster piston (2) and connected to the reversing valve core (3), the flange head (8a) pressing against the booster piston (2) when the booster piston (2) pulls the reversing valve core (3) forward.

3. The reversing device of the pneumatically controlled booster pump according to claim 1, characterized in that, It also includes a valve core pressure plate (9), which is located inside the rear end of the booster cylinder (1) and positions the reversing valve core (3) for forward movement.

4. The reversing device of the pneumatically controlled booster pump according to claim 1, characterized in that, It also includes a locking connector (10) connected to the booster piston (2), which pushes the reversing valve core (3) backward through the head of the locking connector (10).

5. The reversing device of the pneumatically controlled booster pump according to claim 1, characterized in that, The rear end of the booster cylinder (1) is provided with a rear cover (11), and the first air hole (4), the second air hole (5), the third air hole (6) and the reversing valve core (3) are located inside the rear cover (11).

6. A booster pump, characterized in that: The reversing device includes the pneumatic booster pump as described in any one of claims 1 to 5.

7. The booster pump according to claim 6, characterized in that, The front end of the booster cylinder (1) is provided with a high pressure pipe (12) at an interval, and the high pressure pipe (12) is provided with a booster rod (13) that connects to the booster piston (2).

8. The booster pump according to claim 6, characterized in that, The booster cylinder (1) has a front vent (14) at the front end and a rear vent (15) at the rear end; the front vent (14) and the rear vent (15) are respectively connected to the pneumatic control valve (7); The air control valve (7) switches the air intake of the booster cylinder (1) between the front vent (14) and the rear vent (15), thereby changing the direction of motion of the booster piston (2) to achieve its cyclic reciprocating motion.

9. The booster pump according to claim 7, characterized in that, The front end of the booster cylinder (1) is provided with a front cover (16), and the high pressure pipe (12) is connected to the front cover (16).

10. The booster pump according to claim 7, characterized in that, The high-pressure pipe (12) is provided with a high-pressure output port (17) and a low-pressure air inlet (18), which are respectively connected to a one-way valve (19).

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