Valve assembly resistant to medium long-period impact

Abstract

The utility model discloses a valve assembly resistant to medium long-period impact, which comprises a valve seat, a valve seat ring arranged at the top of an outer ring of the valve seat, a top plate arranged at the top of the valve seat ring, a buffer sleeve arranged between the valve seat ring and the top plate and fixedly connected with the periphery of the top of the valve seat, and a sleeve rod slidably arranged in the buffer sleeve. The top of the sleeve rod is fixedly connected with the top plate, the bottom of the sleeve rod is fixedly provided with a first piston, the first piston is in sliding and sealing connection with the surface of the inner wall of the buffer sleeve, and the bottom of the buffer sleeve is provided with a micro-channel. The internal pressure of the first piston is increased, and then the gas is slowly exhausted through the micro-channel, so that the purpose of relieving the downward moving speed of the first piston is achieved, and the influence of impact force generated by the high-pressure gas on the valve seat is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and in particular relates to a valve component capable of resisting long-period impact of media. Background Art

[0002] As the main equipment for controlling medium flow or on-off, the performance and reliability of valves are directly related to the operational stability of the system.

[0003] At present, some valves are constantly opened and closed during operation and are subjected to repeated impacts of the medium, which seriously affects the service life of the valve seat, causes erosion and wear, and then leakage. Therefore, a valve assembly that can resist long-term impact of the medium is proposed. Utility Model Content

[0004] The purpose of the present utility model is to provide a valve assembly that can resist long-term impact of a medium, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a valve assembly that is resistant to long-term impact of media, comprising a valve seat, a valve seat ring and a buffer sleeve, a valve seat ring is provided on the top of the outer ring of the valve seat, a top plate is provided on the top of the valve seat ring, a buffer sleeve is provided between the valve seat ring and the top plate, the buffer sleeve is fixedly connected to the top periphery of the valve seat, a sleeve rod is provided for sliding inside the buffer sleeve, the top of the sleeve rod is fixedly connected to the top plate, a first piston is fixedly installed on the bottom of the sleeve rod, the first piston is slidably and sealedly connected to the inner wall surface of the buffer sleeve, a microchannel is provided at the bottom of the buffer sleeve, and the microchannel penetrates the shell of the buffer sleeve and extends to the outside.

[0006] Preferably, a valve stem is provided at the top center position of the valve seat, and an upper spring seat and a lower spring seat are provided at the top of the valve stem in sequence from top to bottom, and an air cylinder is provided on the top of the lower spring seat, and a second piston is slidingly provided inside the air cylinder, and the second piston slides and is sealed with the inner wall of the air cylinder, and a cylinder rod is fixedly installed on the top of the second piston, and the top of the cylinder rod is fixedly connected to the upper spring seat.

[0007] Preferably, both the inner ring and the outer ring of the valve seat ring are provided with a corrugated rubber sleeve, and the two ends of the corrugated rubber sleeve are fixedly connected to the valve seat and the top plate respectively by gluing.

[0008] Preferably, a buffer spring is provided inside the buffer sleeve, and two ends of the buffer spring are fixedly connected to the bottom of the first piston at the inner bottom surface of the buffer sleeve respectively.

[0009] Preferably, a sealing ring is provided on the outer periphery of the valve seat, and the sealing ring is sleeved on the outer periphery of the valve seat and embedded in the valve seat.

[0010] Preferably, a valve spring is provided between the upper spring seat and the lower spring seat, and two ends of the valve spring are fixedly connected to the upper spring seat and the lower spring seat respectively.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. By using the sleeve rod to push the first piston to slide inside the buffer sleeve and compressing the buffer spring, the air inside the buffer sleeve is squeezed to increase its internal pressure, and then the medium is slowly discharged through the microchannel, thereby achieving the purpose of slowing down the downward movement of the first piston, thereby reducing the impact of the impact force generated by the medium on the valve seat.

[0013] 2. By using the cylinder rod to push the second piston to move, pressure is applied to the bottom end of the cylinder, which increases the internal pressure of the cylinder, thereby relieving the pressure of the valve spring. When resetting, the medium in the cylinder is used to push the second piston upward to provide assistance to the valve spring, thereby reducing the burden on the valve spring and extending the service life of the valve spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the gas cylinder of the present utility model;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the valve seat ring of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the gas cylinder of the present utility model;

[0018] Figure 5 For the utility model Figure 3 A is a schematic diagram of the enlarged structure.

[0019] In the figure: 1. Valve seat; 2. Sealing ring; 3. Valve seat ring; 4. Top plate; 5. Corrugated rubber sleeve; 6. Buffer sleeve; 7. Sleeve rod; 8. First piston; 9. Buffer spring; 10. Microchannel; 11. Valve stem; 12. Lower spring seat; 13. Valve spring; 14. Upper spring seat; 15. Air cylinder; 16. Cylinder rod; 17. Second piston. DETAILED DESCRIPTION

[0020] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0021] Please refer to Figure 1-5 The utility model provides a novel high pressure regulating valve technical scheme: including valve seat 1, valve seat ring 3 and buffer sleeve 6, the outer ring top of valve seat 1 is provided with valve seat ring 3, the top of valve seat ring 3 is provided with top plate 4, buffer sleeve 6 is arranged between valve seat ring 3 and top plate 4, buffer sleeve 6 is fixedly connected with the top outer periphery of valve seat 1, sleeve rod 7 is slidably arranged in the inside of buffer sleeve 6, the top of sleeve rod 7 is fixedly connected with top plate 4, first piston 8 is fixedly installed at the bottom of sleeve rod 7, first piston 8 is slidably and sealingly connected with the inner wall surface of buffer sleeve 6, the bottom of buffer sleeve 6 is provided with small-diameter micro flow channel 10, and micro flow channel 10 extends to the outside through the shell of buffer sleeve 6.

[0022] Specifically, the top center position of valve seat 1 is provided with valve rod 11, and upper spring seat 14 and lower spring seat 12 are sequentially arranged on the top end of valve rod 11 from top to bottom, air cylinder 15 is arranged on the top of lower spring seat 12, second piston 17 is slidably arranged in the inside of air cylinder 15, second piston 17 is slidably and sealingly connected with the inner wall of air cylinder 15, cylinder rod 16 is fixedly installed at the top of second piston 17, and the top of cylinder rod 16 is fixedly connected with upper spring seat 14.

[0023] Specifically, the inner ring and the outer ring of valve seat ring 3 are provided with corrugated rubber sleeves 5, and the two ends of corrugated rubber sleeves 5 are fixedly connected with valve seat 1 and top plate 4 respectively in a gluing manner.

[0024] Specifically, buffer spring 9 is arranged in the inside of buffer sleeve 6, and the two ends of buffer spring 9 are fixedly connected with the bottom surface in the inside of buffer sleeve 6 and the bottom of first piston 8 respectively.

[0025] Specifically, sealing ring 2 is arranged on the outer periphery of valve seat 1 and is embedded in valve seat 1.

[0026] Specifically, valve spring 13 is arranged between upper spring seat 14 and lower spring seat 12, and the two ends of valve spring 13 are fixedly connected with upper spring seat 14 and lower spring seat 12 respectively.

[0027] In this embodiment, a buffer sleeve 6 with a sleeve rod 7 and a first piston 8 is provided on the top of the valve seat 1. When the valve seat 1 is working, the sleeve rod 7 is used to push the first piston 8 to slide inside the buffer sleeve 6 and compress the buffer spring 9. When the first piston 8 moves downward inside the buffer sleeve 6, the air inside it is squeezed, so that the internal pressure of the buffer sleeve 6 increases, and then the gas is slowly discharged by using a micro-channel 10 with a smaller diameter, thereby achieving the purpose of alleviating the downward speed of the first piston 8, thereby reducing the impact of the impact force generated by the high-pressure gas on the valve seat 1, and by An air cylinder 15 is arranged between 14 and the lower spring seat 12. When the valve stem 11 drives the upper spring seat 14 to move and compress the valve spring 13, it drives the cylinder rod 16 to move downward, and utilizes the cylinder rod 16 to push the second piston 17 to move, and applies pressure to the inner bottom end of the air cylinder 15, so that the internal pressure of the air cylinder 15 increases, thereby achieving the purpose of relieving the pressure of the valve spring 13, and when resetting, utilizes the high-pressure gas in the air cylinder 15 to push the second piston 17 to move upward, providing assistance to the valve spring 13, thereby achieving the purpose of reducing the burden on the valve spring 13, thereby achieving the purpose of extending the service life of the valve spring 13.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A valve assembly resistant to long-term impact of a medium, comprising a valve seat (1), a valve seat ring (3) and a buffer sleeve (6), characterized in that: A valve seat ring (3) is provided on the top of the outer ring of the valve seat (1), a top plate (4) is provided on the top of the valve seat ring (3), a buffer sleeve (6) is provided between the valve seat ring (3) and the top plate (4), the buffer sleeve (6) is fixedly connected to the top periphery of the valve seat (1), a sleeve rod (7) is provided for sliding inside the buffer sleeve (6), the top of the sleeve rod (7) is fixedly connected to the top plate (4), a first piston (8) is fixedly installed on the bottom of the sleeve rod (7), the first piston (8) is slidably and sealedly connected to the inner wall surface of the buffer sleeve (6), a microchannel (10) is provided at the bottom of the buffer sleeve (6), and the microchannel (10) penetrates the shell of the buffer sleeve (6) and extends to the outside.

2. A valve assembly resistant to long-period impact of media according to claim 1, characterized in that: A valve stem (11) is provided at the top center position of the valve seat (1), an upper spring seat (14) and a lower spring seat (12) are provided at the top of the valve stem (11) in order from top to bottom, an air cylinder (15) is provided at the top of the lower spring seat (12), a second piston (17) is provided inside the air cylinder (15) for sliding, the second piston (17) is slidably and sealedly connected to the inner wall of the air cylinder (15), a cylinder rod (16) is fixedly installed on the top of the second piston (17), and the top of the cylinder rod (16) is fixedly connected to the upper spring seat (14).

3. The valve assembly resistant to long-period impact of media according to claim 1, characterized in that: The inner ring and the outer ring of the valve seat ring (3) are both provided with a corrugated rubber sleeve (5), and the two ends of the corrugated rubber sleeve (5) are fixedly connected to the valve seat (1) and the top plate (4) respectively by gluing.

4. The valve assembly resistant to long-period impact of media according to claim 1, characterized in that: A buffer spring (9) is provided inside the buffer sleeve (6), and two ends of the buffer spring (9) are fixedly connected to the bottom of the first piston (8) at the inner bottom surface of the buffer sleeve (6) respectively.

5. The valve assembly resistant to long-period impact of media according to claim 1, characterized in that: A sealing ring (2) is provided on the outer periphery of the valve seat (1); the sealing ring (2) is sleeved on the outer periphery of the valve seat (1) and embedded in the valve seat (1).

6. The valve assembly resistant to long-period impact of media according to claim 2, characterized in that: A valve spring (13) is provided between the upper spring seat (14) and the lower spring seat (12), and two ends of the valve spring (13) are fixedly connected to the upper spring seat (14) and the lower spring seat (12) respectively.

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