Intake and exhaust valve structure of hydraulic drive compressor

Abstract

The utility model relates to the technical field of hydraulic compressors, in particular to an air inlet and exhaust valve structure of a hydraulic compressor. Comprising a valve body, an air inlet and outlet channel is formed in the valve body, a spring seat is movably installed in the air inlet and outlet channel, a groove cavity is formed in the spring seat, a ball is movably arranged in the groove cavity, one side of the ball penetrates out of the open end of the groove cavity and is in contact fit sealing with a step in the air inlet and outlet channel, and the other side of the ball abuts against the inner end of a guide column. An inner spring is arranged between the inner end of the guide column and the spring seat, and an outer spring is arranged outside the end, away from the ball, of the spring seat. When gas pressure is not high, gas pushes a ball to move, the ball pushes a guide column to compress an inner spring, the ball is small in moving distance and small in opening amount, and the requirement for gas inlet and outlet amount can be met; when the gas pressure is too large, the ball pushes the whole spring seat to move, the spring seat compresses the outer spring, at the moment, the moving distance of the ball is large, the opening amount is large, and more gas can enter or be exhausted rapidly.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid drive compressor technical field especially relates to a kind of liquid drive compressor inlet and exhaust valve structure. BACKGROUND

[0002] At present, when the compressor pressurizes gas, the gas cavity piston inside the compressor is driven reciprocating by driving mechanism, which can realize the pressurization of gas, wherein the driving mechanism includes crankshaft connecting rod or hydraulic driving form. When the gas cavity piston reciprocates to pressurize gas, low-pressure gas enters the compression cylinder through the inlet valve, and then high-pressure gas is discharged outward through the exhaust valve. The opening amount of the current inlet valve and exhaust valve is limited, more gas cannot enter the compression cylinder quickly, and the pressurized gas cannot be discharged quickly, which affects the compression efficiency. In addition, due to the influence of the gas pressure in the compression cylinder, the inlet valve and exhaust valve cannot be quickly closed to cut off the connection between the inner and outer cavities. Currently, there is no good solution to the above problems.

[0003] In summary, the above problems of the inlet valve and exhaust valve in the compression cylinder have become a technical problem that needs to be solved in the industry. INVENTION CONTENTS

[0004] The utility model provides a kind of liquid drive compressor inlet and exhaust valve structure to make up for the deficiency of prior art, solve the problem of limited opening amount of inlet valve and exhaust valve in previous compression cylinder and slow inlet and exhaust speed.

[0005] The utility model employs the technical scheme to solve the above technical problems:

[0006] A kind of liquid drive compressor inlet and exhaust valve structure, including valve body, the valve body is equipped with inlet and exhaust passage, spring seat is movably installed in inlet and exhaust passage, gap is arranged between the outer surface of spring seat and the inner wall of inlet and exhaust passage, slot cavity is arranged in spring seat, spherical ball is movably arranged in slot cavity, the opening end of slot cavity is contacted and matched with the step in inlet and exhaust passage, the other side of spherical ball is abutted with the inner end of guide column, inner spring is arranged between the inner end of guide column and spring seat, the outer end of guide column is movably penetrated through spring seat and is equipped with elastic baffle ring, elastic baffle ring is abutted with the outer end of spring seat, outer spring is arranged on the outer side of the end of spring seat away from spherical ball, one end of outer spring is abutted with the step on the outer surface of spring seat, and the other end is abutted with spring baffle ring seat installed in inlet and exhaust passage.

[0007] The two sides of the spring seat are flatly arranged.

[0008] The spherical ball is made of hard alloy.

[0009] Sealing pad is arranged at the step in inlet and exhaust passage in contact with spherical ball, and sealing pad is installed and fixed by sealing pad baffle ring seat.

[0010] The sealing gasket is made of PTFE material.

[0011] One end of the inner spring abuts against the step of the inner end of the guide column, and the other end abuts against the spring seat.

[0012] The spring retainer seat is installed in the air inlet and outlet channel through a snap spring, and the air inlet and outlet channel is provided with a snap spring groove matched with the snap spring.

[0013] The elastic force of the outer spring is greater than that of the inner spring.

[0014] The utility model discloses the above-mentioned scheme has the following advantages:

[0015] The spring seat is movably installed in the air inlet and outlet channel, the spherical ball is movably arranged in the spring seat, the inner end of the guide column and the spring seat are provided with the inner spring, and the outer side of the end of the spring seat away from the spherical ball is provided with the outer spring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the sectional view structural schematic diagram of the utility model.

[0017] Fig. 2 It is the internal structure three-dimensional schematic diagram of the utility model.

[0018] In the drawing, 1, valve body, 2, air inlet and outlet channel, 3, spring seat, 4, spherical ball, 5, guide column, 6, inner spring, 7, elastic retainer, 8, outer spring, 9, spring retainer seat, 10, sealing gasket, 11, sealing gasket retainer seat, 12, snap spring. DETAILED DESCRIPTION

[0019] In order to clearly illustrate the technical features of the scheme, the utility model is described in detail below through specific implementation mode, and is combined with its drawings.

[0020] For example, Figs. 1-2As shown, a liquid-driven compressor inlet and exhaust valve structure comprises a valve body 1, an inlet and exhaust passage 2 is arranged in the valve body 1, a spring seat 3 is movably arranged in the inlet and exhaust passage 2, a gap is arranged between the outer surface of the spring seat 3 and the inner wall of the inlet and exhaust passage 2, a groove cavity is arranged in the spring seat 3, a ball 4 is movably arranged in the groove cavity, one side of the ball 4 passes through the opening end of the groove cavity and is in contact and sealing with the step in the inlet and exhaust passage 2, the other side of the ball 4 abuts against the inner end of a guide column 5, an inner spring 6 is arranged between the inner end of the guide column 5 and the spring seat 3, the outer end of the guide column 5 movably passes through the spring seat 3 and is arranged with an elastic retainer 7, the elastic retainer 7 abuts against the outer end of the spring seat 3, an outer spring 8 is arranged on the outer side of the end of the spring seat 3 away from the ball 4, one end of the outer spring 8 abuts against the step on the outer surface of the spring seat 3, and the other end abuts against a spring retainer seat 9 arranged in the inlet and exhaust passage 2.

[0021] The two sides of the spring seat 3 are flatly arranged, so that the inlet and exhaust are more smooth.

[0022] The ball 4 is made of hard alloy, has high hardness, is wear-resistant, and has long service life.

[0023] A sealing gasket 10 is arranged at the step in the inlet and exhaust passage 2 in contact with the ball 4, the sealing gasket 10 is arranged and fixed through a sealing gasket retainer seat 11, the sealing gasket 10 is made of PTFE material, can resist high temperature and high pressure, easily forms a sealing band with the ball 4, and can well play a sealing role.

[0024] One end of the inner spring 6 abuts against the step of the inner end of the guide column 5, and the other end abuts against the spring seat 3.

[0025] The spring retainer seat 9 is arranged in the inlet and exhaust passage 2 through a snap spring 12, the inlet and exhaust passage 2 is arranged with a snap spring groove matched with the snap spring 12, and is easy to install and disassemble.

[0026] The elastic force of the outer spring 8 is greater than that of the inner spring 6.

[0027] Working principle:

[0028] In normal state, the inner end of the spring seat 3 is in abutment with the sealing gasket retainer ring seat 11 under the elastic action of the outer spring 8, the elastic retainer ring 7 is in abutment with the outer end of the spring seat 3 under the elastic action of the inner spring 6, the inner end of the guide column 5 is in abutment with the spherical ball 4, and the spherical ball 4 is in contact and cooperation sealing with the sealing gasket 10. When the gas is inhaled or exhaled, the spherical ball 4 is pushed to move away from the sealing gasket 10 by the gas when the gas pressure exceeds the elastic force of the inner spring 6 and is lower than the elastic force of the outer spring 8, and the spherical ball 4 pushes the guide column 5 to compress the inner spring 6, at this time, the moving distance of the spherical ball 4 is small, and the opening amount is small, but the current inhaled or exhaled amount can be met; when the gas pressure is too large and exceeds the elastic force of the outer spring 8, the spherical ball 4 pushes the whole spring seat 3 to move, and the spring seat 3 compresses the outer spring 8, at this time, the moving distance of the spherical ball 4 is large, and the opening amount is large, and more gas can be inhaled or exhaled quickly; when the inhaled or exhaled gas ends, the spring seat 3 and the spherical ball 4 can be quickly reset under the joint action of the outer spring 8 and the inner spring 6, so that the spherical ball 4 cooperates with the sealing gasket 10 to seal the inhaled or exhaled passage 2 and timely cut off the connection between the inner cavity and the outer cavity.

[0029] The above specific embodiment cannot be regarded as the limitation of the protection scope of the utility model, and any alternative improvement or change made by the person skilled in the art to the embodiment of the utility model falls within the protection scope of the utility model.

[0030] The not detailed parts of the utility model are the known technology of the person skilled in the art.

Claims

1. A liquid drive compressor inlet and discharge valve structure, characterized by: The utility model provides a valve body, the valve body is equipped with the air inlet and exhaust passage, spring seat is movably installed in the air inlet and exhaust passage, the outer surface of spring seat is equipped with the gap with the inner wall of air inlet and exhaust passage, spring seat is equipped with the groove cavity, the groove cavity is movably equipped with the ball, the opening end of the groove cavity of one side of ball is contacted and is sealed with the step in the air inlet and exhaust passage, the other side of ball is contacted with the inner end of guide column, the inner end of guide column is equipped with the inner spring between spring seat, the outer end of guide column is movably worn out spring seat and is equipped with the elastic baffle ring, the outer end of spring seat is contacted with the elastic baffle ring, the outer side of one end of spring seat is equipped with the outer spring, the other end of outer spring is contacted with the spring baffle ring seat of installation in the air inlet and exhaust passage.

2. A liquid actuated compressor inlet and outlet valve structure according to claim 1, wherein: The both sides of the spring seat are flatly arranged.

3. A liquid actuated compressor inlet and outlet valve structure according to claim 1, wherein: The ball is made of hard alloy.

4. A liquid actuated compressor inlet and outlet valve structure according to claim 1, wherein: The step in the air inlet and exhaust passage, which is in contact with the ball, is provided with a sealing gasket, and the sealing gasket is fixed by a sealing gasket baffle ring seat.

5. A liquid actuated compressor inlet and outlet valve structure according to claim 4 wherein: The sealing gasket is made of PTFE material.

6. A liquid actuated compressor inlet and outlet valve structure according to claim 1, wherein: One end of the inner spring is in contact with the step of the inner end of the guide column, and the other end is in contact with the spring seat.

7. A liquid actuated compressor inlet and outlet valve structure as defined in claim 1 wherein: The spring baffle ring seat is installed in the air inlet and exhaust passage by a snap spring, and the air inlet and exhaust passage is provided with a snap spring groove matched with the snap spring.

8. A liquid actuated compressor inlet and outlet valve structure according to claim 1, wherein: The elastic force of the outer spring is greater than that of the inner spring.

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