Novel modularized pneumatic hydraulic booster pump

Abstract

The utility model discloses a novel modularized pneumatic hydraulic booster pump which comprises a shell and a piston plate, the piston plate is arranged in an inner cavity of the shell, a conical coupling is arranged in the center of the piston plate, and an air pressure piston rod and an oil pressure piston rod are dynamically coupled through the conical coupling. The piston plate, the air pressure piston rod and the oil pressure piston rod divide the interior of the shell into an air inlet buffering cavity, a double-piston working cavity and a hydraulic output cavity through sealing pieces, and an air filter of a centrifugal separation structure is arranged between an air inlet connector formed in the left side of the shell and the air inlet buffering cavity. An air silencer is arranged at an exhaust port of the air inlet buffer cavity and is fixed in the upper part of the shell through a silencer baffle ring; through the arrangement, the problems that the leakage risk is high due to the fact that an existing pneumatic hydraulic booster pump is complex in pipeline connection, pressure pulsation is large due to a single-piston working mode, and the maintenance cost is increased due to the separation design of a filtering device and a silencing device are solved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic power equipment technology, specifically to a novel modular pneumatic-hydraulic booster pump that significantly improves system efficiency and reliability through optimized fluid path and mechanical structure design. Background Technology

[0002] A pneumatic-hydraulic booster pump is a device that uses gas pressure to increase liquid pressure, operating on the principle of Pascal's law. Specifically, it converts the pressure energy of gas into the pressure energy of liquid through the piston movement of a pneumatic cylinder. When compressed air enters the pneumatic cylinder, it pushes the piston forward, compressing the gas inside and generating high-pressure gas. Then, a pressure proportional valve, according to a set pressure ratio, transmits the high-pressure gas to the hydraulic cylinder, thereby boosting the liquid pressure.

[0003] Existing pneumatic-hydraulic booster pumps generally suffer from the following defects: complex pipeline connections leading to a high risk of leakage, single-piston working mode causing large pressure pulsation, and separate design of filtration and silencing devices increasing maintenance costs. Utility Model Content

[0004] The main objective of this invention is to provide a novel modular pneumatic-hydraulic booster pump that can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A novel modular pneumatic-hydraulic booster pump includes a housing and a piston plate. The piston plate is disposed in the inner cavity of the housing, and a tapered coupling is disposed at the center of the piston plate. The tapered coupling power couples the pneumatic piston rod and the hydraulic piston rod from top to bottom. The piston plate, the pneumatic piston rod, and the hydraulic piston rod are separated from top to bottom by a seal into three functional chambers: an air inlet buffer chamber, a dual-piston working chamber, and a hydraulic output chamber.

[0007] To achieve the effect of integrating the filtration and silencing device with the booster pump and reducing maintenance costs, this utility model discloses a novel modular pneumatic-hydraulic booster pump. An air inlet is provided on the left side of the housing. An air filter with a centrifugal separation structure is provided between the air inlet and the air inlet buffer chamber. An air silencer is provided at the exhaust port of the air inlet buffer chamber. The air silencer is fixed inside the housing above by a silencer retaining ring.

[0008] In order to achieve power synchronization between the pneumatic piston rod and the hydraulic piston rod and eliminate the phase difference, the pneumatic piston rod and the hydraulic piston rod are arranged coaxially as a novel modular pneumatic-hydraulic booster pump of this utility model. The pneumatic piston rod passes through the air intake buffer chamber and the double piston working chamber, and the hydraulic piston rod passes through the double piston working chamber and the hydraulic output chamber.

[0009] In order to achieve the effect of automatic discharge and circulation of gas in the intake buffer chamber, as a novel modular pneumatic-hydraulic booster pump of this utility model, a pneumatic control valve is provided in the intake buffer chamber, the pneumatic piston rod passes through the pneumatic control valve, the pneumatic piston rod can extend and retract on the inner wall of the pneumatic control valve, and matching O-rings are provided on the outer wall of the pneumatic control valve and the outer wall of the pneumatic piston rod.

[0010] In order to achieve the effect of continuous active liquid intake and pressurization in the hydraulic output chamber by driving the piston plate in the working chamber of the double piston to make piston movement without interruption, as a new type of modular pneumatic hydraulic booster pump of this utility model, the outer wall of the piston plate is provided with a matching bidirectional sealing ring, the conical coupling is supported and limited on the piston plate by the coupling pressure plate, the coupling pressure plate is supported by a spring provided in the working chamber of the double piston, one end of the spring is fixed at the bottom of the working chamber of the double piston (6), and the other end supports the coupling pressure plate, and the inner wall of the hydraulic output chamber is provided with a one-way sealing ring that covers the oil piston rod.

[0011] In order to reduce the large pressure pulsation when the pneumatic hydraulic booster pump is in operation, as a novel modular pneumatic hydraulic booster pump of this utility model, the bottom of the air intake buffer chamber and the double piston working chamber are respectively provided with a first buffer ring and a second buffer ring, and a pulsation relief device is provided directly above the pneumatic piston rod, which is directly opposite the air silencer.

[0012] In order to achieve the effect of stable output after liquid is drawn into the hydraulic output chamber and pressurized, as a novel modular pneumatic hydraulic booster pump of this utility model, an inlet port and a Y-type diverter outlet port are respectively provided on the lower and right sides of the housing. Both the inlet port and the Y-type diverter outlet port are connected to the hydraulic output chamber. An inlet check valve and an outlet check valve are respectively provided inside the inlet port and the Y-type diverter outlet port.

[0013] To achieve precise control of the pneumatic-hydraulic booster pump and make its operation more stable and safe, this utility model discloses a novel modular pneumatic-hydraulic booster pump. The intelligent pressure and temperature integrated sensor on the housing is connected to the dual-piston working chamber. The output end of the intelligent pressure and temperature integrated sensor is electrically connected to a power supply controller. The power supply controller is also connected to the air inlet through a pneumatic pipeline. The housing is also provided with an exhaust port, which is equipped with an exhaust screw and is connected to the hydraulic output chamber.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This new modular pneumatic-hydraulic booster pump integrates the air handling unit, dual piston assembly, and hydraulic circuit into the same housing, reducing the number of parts compared to traditional structures and improving assembly efficiency. Through the dual-piston power coupling mechanism connecting the pneumatic piston rod and the hydraulic piston rod with a tapered coupling, as well as the setting of a buffer ring and a pulsation relief device, the power transmission efficiency is improved and the pressure pulsation rate is reduced.

[0016] 2. This new modular pneumatic-hydraulic booster pump uses an intelligent integrated pressure and temperature sensor to collect real-time pressure and temperature data within the dual-piston working chamber and outputs it to the power supply controller. The power supply controller uses a PID+fuzzy control algorithm to adjust the opening of its internal solenoid valve and control the pressure of compressed air inflow in real time, making the output pressure fluctuation more stable and achieving a more stable and safer operation of the pneumatic-hydraulic booster pump. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a novel modular pneumatic-hydraulic booster pump according to Embodiment 1 of this utility model;

[0018] Figure 2 This is a simplified flowchart illustrating the working principle of a novel modular pneumatic-hydraulic booster pump according to Embodiment 1 of this utility model.

[0019] Figure 3 This is a schematic diagram of the intelligent control structure in Embodiment 2 of this utility model.

[0020] In the diagram: 1. Housing; 2. Piston plate; 201. Two-way sealing ring; 202. Conical coupling; 3. Pneumatic piston rod; 4. Hydraulic piston rod; 5. Inlet buffer chamber; 6. Double piston working chamber; 7. Hydraulic output chamber; 8. Inlet port; 801. Air filter; 9. Pneumatic control valve; 10. One-way sealing ring; 11. Liquid inlet port; 1101. Liquid inlet check valve; 12. Y-type diverting liquid outlet port; 1201. Liquid outlet check valve; 13. Spring; 14. Coupling pressure plate; 15. First buffer ring; 16. Second buffer ring; 17. Pulsating slow-release device; 18. Air silencer; 19. Silencer retaining ring; 20. Pneumatic pipeline; 21. Intelligent pressure and temperature integrated sensor; 22. Power supply controller; 23. Exhaust screw. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] like Figure 1-2 As shown, a novel modular pneumatic-hydraulic booster pump includes a housing 1 and a piston plate 2. The piston plate 2 is disposed in the inner cavity of the housing 1. A tapered coupling 202 is disposed at the center of the piston plate 2. The tapered coupling 202 power couples the pneumatic piston rod 3 and the hydraulic piston rod 4 from top to bottom. The piston plate 2, the pneumatic piston rod 3 and the hydraulic piston rod 4 are separated into three functional chambers from top to bottom in the housing 1 by a sealing element: an air intake buffer chamber 5, a double piston working chamber 6 and a hydraulic output chamber 7.

[0024] In practical use, the air intake buffer chamber 5, the dual-piston working chamber 6, and the hydraulic output chamber 7 are set up to achieve the effect of integrating the air handling unit, the dual-piston collaborative system, and the intelligent fluid control circuit into the same housing.

[0025] In this embodiment, an air inlet 8 is provided on the left side of the housing 1, and an air filter 801 with a centrifugal separation structure is provided between the air inlet 8 and the air inlet buffer chamber 5. An air silencer 18 is provided at the exhaust port of the air inlet buffer chamber 5, and the air silencer 18 is fixed inside the housing 1 above by a silencer retaining ring 19.

[0026] In practical use, the integrated design of the air filter 801 and air silencer 18, which combine the filtration and silencer devices with the booster pump, reduces maintenance costs.

[0027] In this embodiment, the pneumatic piston rod 3 and the hydraulic piston rod 4 are arranged coaxially. The pneumatic piston rod 3 passes through the air intake buffer chamber 5 and the double piston working chamber 6, and the hydraulic piston rod 4 passes through the double piston working chamber 6 and the hydraulic output chamber 7.

[0028] In practical use, the pneumatic piston rod 3 and the hydraulic piston rod 4 are arranged coaxially to achieve power synchronization between the pneumatic piston rod 3 and the hydraulic piston rod 4, thus eliminating the phase difference.

[0029] In this embodiment, an air control valve 9 is provided in the air intake buffer chamber 5, and the air pressure piston rod 3 can extend and retract on the inner wall of the air control valve 9. O-rings matching the valve are provided on the outer wall of the air control valve 9 and the outer wall of the air pressure piston rod 3.

[0030] In practical use, the gas in the intake buffer chamber 5 can be automatically discharged and circulated by setting the pneumatic control valve 9 and the pneumatic piston rod 3.

[0031] In this embodiment, a matching bidirectional sealing ring 201 is provided on the outer wall of the piston plate 2, and the tapered coupling 202 is supported and limited on the piston plate 2 by the coupling pressure plate 14. The coupling pressure plate 14 is supported by the spring 13 provided in the double piston working chamber 6, and a one-way sealing ring 10 is provided on the inner wall of the hydraulic output chamber 7 to cover the hydraulic piston rod 4.

[0032] In practical use, the piston plate 2, the hydraulic piston rod 4 and the spring 13 are arranged to achieve the effect of the piston plate 2 driving the hydraulic piston rod 4 to make continuous piston movement in the double piston working chamber 6, thereby realizing the effect of continuous active liquid intake and pressurization in the hydraulic output chamber 7.

[0033] In this embodiment, a first buffer ring 15 and a second buffer ring 16 are respectively provided at the bottom of the air intake buffer chamber 5 and the dual piston working chamber 6, and a pulsating slow-release device 17 is provided directly above the air pressure piston rod 3.

[0034] In practical use, the first buffer ring 15, the second buffer ring 16 and the pulsation relief device 17 are set to reduce the large pressure pulsation when the pneumatic hydraulic booster pump is in operation.

[0035] In this embodiment, a liquid inlet 11 and a Y-type diversion liquid outlet 12 are respectively provided on the lower and right sides of the housing 1. Both the liquid inlet 11 and the Y-type diversion liquid outlet 12 are connected to the hydraulic output chamber 7. A liquid inlet check valve 1101 and a liquid outlet check valve 1201 are respectively provided inside the liquid inlet 11 and the Y-type diversion liquid outlet 12.

[0036] In practical use, by setting up the inlet port 11, the Y-type diversion outlet port 12, the inlet check valve 1101 and the outlet check valve 1201, the effect of absorbing liquid in the hydraulic output chamber 7 and then pressurizing and stabilizing the output is achieved.

[0037] Working principle: During operation, compressed air enters the intake buffer chamber 5 through the air filter 801, pushing the piston plate 2 downward in the double piston working chamber 6, compressing the spring 13. This further pushes the hydraulic piston rod 4 into the hydraulic output chamber 7 to compress and discharge the liquid. When the spring 13 is fully compressed, the upper end of the pneumatic piston rod 3 disengages from the inner wall of the pneumatic control valve 9, allowing the gas to be discharged through the air silencer 18. Then, the spring 13 rebounds, further driving the lower end of the hydraulic piston rod 4 to retract from the hydraulic output chamber 7, creating a negative pressure in the hydraulic output chamber 7 to draw in unpressurized liquid. At the same time, the piston plate 2 and the pneumatic piston rod 3 return to their original positions, and the compressed air pushes the piston plate 2 to do work, cycling in sequence to realize the pneumatic hydraulic booster pump's booster output of the liquid.

[0038] Example 2

[0039] like Figure 3 As shown, the distinguishing feature of this embodiment from that of embodiment 1 is that the intelligent pressure and temperature integrated sensor 21 on the housing 1 is connected to the dual piston working chamber 6 at its acquisition end, and the output end of the intelligent pressure and temperature integrated sensor 21 is electrically connected to the power supply controller 22. The power supply controller 22 is also connected to the air inlet 8 through the pneumatic pipeline 20. The housing 1 is also provided with an exhaust screw 23 that is connected to the hydraulic output chamber 7.

[0040] In practical use, by setting up the intelligent pressure and temperature integrated sensor 21, the power supply controller 22 and the exhaust screw 23, the pneumatic hydraulic booster pump can be precisely controlled to achieve a more stable and safer operation. When it is necessary to actively drain the hydraulic output chamber 7, the exhaust screw 23 is loosened so that atmospheric pressure liquid is introduced into the hydraulic output chamber 7 and discharged from the Y-type diversion outlet 12.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A new modular aerohydraulic booster pump comprising a casing (1) and a piston plate (2), characterized by the fact that: The piston plate (2) is arranged in the inner cavity of the shell (1), the center position of the piston plate (2) is provided with a tapered shaft coupling (202), the tapered shaft coupling (202) is power coupled from top to bottom with the air pressure piston rod (3) and the oil pressure piston rod (4) respectively, the piston plate (2), the air pressure piston rod (3) and the oil pressure piston rod (4) are separated from top to bottom by the sealing element to divide the inside of the shell (1) into three functional chambers of the air inlet buffer cavity (5), the double piston working cavity (6) and the hydraulic output cavity (7) respectively.

2. A new modular pneumatic hydraulic booster pump as claimed in claim 1, wherein: The left side of the shell (1) is provided with an air inlet interface (8), the air inlet interface (8) is provided with an air cleaner (801) with a centrifugal separation structure in the middle of the air inlet buffer cavity (5), the air outlet of the air inlet buffer cavity (5) is provided with an air silencer (18), the air silencer (18) is fixed on the inside of the shell (1) by the silencer stop ring (19).

3. A new modular pneumatic hydraulic booster pump as claimed in claim 1, wherein: The air pressure piston rod (3) and the oil pressure piston rod (4) are coaxially arranged, the air pressure piston rod (3) penetrates the air inlet buffer cavity (5) and the double piston working cavity (6), the oil pressure piston rod (4) penetrates the double piston working cavity (6) and the hydraulic output cavity (7).

4. A new modular pneumatic hydraulic booster pump as claimed in claim 1, wherein: The air inlet buffer cavity (5) is provided with an air control valve (9), the air pressure piston rod (3) penetrates the air control valve (9), the air pressure piston rod (3) can be telescopic in the inner wall of the air control valve (9), the outer wall of the air control valve (9) and the outer wall of the air pressure piston rod (3) are both provided with O-rings matched therewith.

5. A new modular pneumatic hydraulic booster pump as claimed in claim 1, wherein: The outer wall of the piston plate (2) is provided with a bidirectional sealing ring (201) matched therewith, the tapered shaft coupling (202) is supported and limited on the piston plate (2) by the shaft coupling pressing plate (14), the shaft coupling pressing plate (14) is provided with supporting force by the spring (13) arranged in the double piston working cavity (6), one end of the spring (13) is fixed on the bottom of the double piston working cavity (6), the other end supports the shaft coupling pressing plate (14), the inner wall of the hydraulic output cavity (7) is provided with a one-way sealing ring (10) to cover the oil pressure piston rod (4).

6. A new modular pneumatic hydraulic booster pump as claimed in claim 1, wherein: The bottom of the air inlet buffer cavity (5) and the double piston working cavity (6) is respectively provided with a first buffer ring (15) and a second buffer ring (16), the air pressure piston rod (3) is provided with a pulsation slow-release device (17) above.

7. A new modular pneumatic hydraulic booster pump as claimed in claim 1, wherein: The lower and right side of the shell (1) is respectively provided with a liquid inlet interface (11) and a Y-shaped shunt liquid outlet interface (12), the liquid inlet interface (11) and the Y-shaped shunt liquid outlet interface (12) are both through the hydraulic output cavity (7), the inside of the liquid inlet interface (11) and the Y-shaped shunt liquid outlet interface (12) is respectively provided with a liquid inlet one-way valve (1101) and a liquid outlet one-way valve (1201).

8. A new modular pneumatic hydraulic booster pump as claimed in claim 1, wherein: The intelligent pressure and temperature integrated sensor (21) arranged on the shell (1) is connected with the double-piston working cavity (6), the output end of the intelligent pressure and temperature integrated sensor (21) is electrically connected with the energy supply controller (22), the energy supply controller (22) is also connected with the air inlet (8) through the pneumatic pipeline (20), the shell (1) is also provided with an air outlet, the air outlet is provided with an air outlet screw (23), and the air outlet is connected with the hydraulic output cavity (7).

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