Pressure-adjustable air valve pressure fork for compressor unit

Abstract

The pressure-adjustable air valve pressing fork for the compressor unit comprises a valve seat and a valve deck, a connecting rod is fixedly installed in the middle of the valve deck, the valve seat is arranged on the connecting rod in a sleeving mode and attached to the top of the valve deck, an annular groove is formed in the top of the valve deck, and the valve deck is fixedly connected with the valve seat. An annular groove is formed in the connecting rod, a valve block attached to the bottom face of the valve seat is arranged in the annular groove, a reset supporting assembly used for supporting the valve block is arranged at the bottom of the annular groove, the outer wall of the connecting rod is sequentially sleeved with a sealing sleeve and a guide sleeve which are attached to the top of the valve seat, and the outer wall of the guide sleeve is sleeved with a pressing fork sleeve seat. According to the pressure-adjustable pressure fork structure, redundant force brought to the valve plate can be reduced in the working process, the valve plate has a better working state, an original welding pressure fork structure is replaced with the pressure-adjustable pressure fork structure, and the problem that the valve plate is damaged or the service life of the valve plate is shortened due to the fact that the overall pressure of the pressure fork is too large is solved.

Description

Technical Field

[0001] The invention relates to the technical field of compressor air valves, and in particular discloses an adjustable pressure air valve pressure fork for a compressor unit. Background Art

[0002] The compressor valve is the core component of the compressor conversion and gas control. Its performance directly affects the compression efficiency and system stability. It is responsible for the intake and discharge of gas. The compressor valve is mainly composed of valve plate, spring, valve seat, pressure fork and lifting structure: the valve plate is usually made of wear-resistant and high-temperature resistant materials to withstand the impact of high-speed opening and closing and the corrosion of high-temperature gas; the spring ensures that the valve plate returns quickly; the valve seat design must ensure good sealing to avoid gas leakage; the lifting structure is driven by a connecting rod or directly by pneumatic or hydraulic drive to open or close the valve in time.

[0003] After searching, the patent with publication number CN210889272U discloses an intake valve with a positioning pressure fork, including a valve seat, a pressure fork seat, a guide sleeve arranged in the pressure fork seat, and the bottom of the guide sleeve arranged on the valve seat; at least one limiting part is arranged on the circumference of the guide sleeve, and the valve seat and the pressure fork seat are respectively provided with a placement groove 1 and a placement groove 2, and the limiting part abuts against the placement groove 1 and the placement groove 2 respectively to achieve the limiting. The upper end of the guide sleeve is placed in the placement groove 1, and the lower end is placed in the placement groove 2 to achieve the connection between the three, and at the same time, the limiting part abuts against the placement groove 1 and the placement groove 2 respectively to achieve the limiting.

[0004] Based on the above search and in combination with the prior art, it is found that the existing air valve pressure fork is generally an integral welded structure, and the up and down movement of the pressure fork is controlled by a hydraulic cylinder lifting structure, thereby controlling the movement of the valve plate. However, the pressure fork only plays the role of transmitting force inside the air valve, and does not change the magnitude of the force acting on the valve plate too much, let alone absorb the excess force. Moreover, the selection of the compressor valve is often not particularly suitable. If the selected compressor valve is too large, the remaining force will be very large. Then, after pressing the valve plate downward to open it, the remaining force will all act on the valve plate. At this time, there is an additional risk for the valve plate, which may cause damage to the valve plate or shorten the life of the valve plate. Therefore, an adjustable pressure air valve pressure fork for a compressor unit is proposed to improve the above problems. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing pressure fork only plays the role of transmitting force inside the air valve, and does not change the force acting on the valve plate too much, and cannot absorb the excess force, which will cause damage to the valve plate or shorten the life of the valve plate.

[0006] In order to solve the above problems, the present invention provides an adjustable pressure gas valve pressure fork for a compressor unit, comprising a valve seat and a valve cover, a connecting rod is fixedly installed in the middle position of the valve cover, and the valve seat is sleeved on the connecting rod and fits on the top of the valve cover, an annular groove is opened on the top of the valve cover, and a valve sheet fits on the bottom surface of the valve seat is arranged inside the annular groove, a reset support assembly for supporting the valve sheet is arranged at the bottom of the annular groove, a sealing sleeve and a guide sleeve fit on the top of the valve seat are sequentially sleeved on the outer wall of the connecting rod, and a pressure fork sleeve seat is sleeved on the outer wall of the guide sleeve, and the outer wall of the pressure fork sleeve seat is sequentially sleeved on the bottom of the outer wall A pressure plate and a second gasket, and the pressure plate and the second gasket are fixed to the pressure fork sleeve seat by screwing, a plurality of rows of equidistantly distributed adjustable pressure fork structures are arranged on the pressure plate, the adjustable pressure fork structure includes a plurality of rows of second through holes equidistantly arranged on the pressure plate, and the inner walls of the second through holes are all plugged with pressure rods, a plurality of rows of equidistantly distributed first through holes are arranged on the valve seat, and the bottom of the pressure rod is plugged into the inside of the first through hole, a lower support ring is fixed to the outer wall of the pressure rod near the middle position, and a plurality of rows of equidistantly sleeved upper support rings are fixed to the bottom of the pressure plate, and a third spring is fixedly installed on the inner wall of the upper support ring and the inner wall of the lower support ring.

[0007] By adopting the above technical solution: the excess force applied to the valve plate can be reduced during operation, so that the valve plate can have a better working condition, and the problem of excessive overall pressure on the compression fork causing damage to the valve plate or shortening the life of the valve plate can be avoided.

[0008] The present invention is further configured such that the bottom and the top of the pressure rod are both provided with screw-connecting grooves, and the inner walls of the two screw-connecting grooves are respectively screw-connected with a lower damping pad and an upper damping pad.

[0009] By adopting the above technical solution: the initial force of squeezing the valve plate can be buffered to ensure that the valve plate will not be squeezed and damaged, and the vibration level of the valve plate can be effectively controlled to achieve the purpose of shock absorption and reduce noise, and the upward movement process of the pressure rod can also be buffered.

[0010] The present invention is further configured as follows: the valve seat is provided with a plurality of rows of first air inlet channels which are distributed at equal distances, and the positions of the first air inlet channels are staggered with the positions of the first through holes; the valve cover is provided with a plurality of rows of third air inlet channels which are distributed at equal distances and are connected with the annular grooves; and the valve sheet is provided with a plurality of rows of second air inlet channels which are distributed at equal distances, and the positions of the second air inlet channels correspond to the positions of the third air inlet channels, and the positions of the second air inlet channels are staggered with the positions of the first air inlet channels.

[0011] By adopting the above technical solution: the circulation of gas can be achieved.

[0012] The present invention is further configured such that a nut is threadedly connected to the top of the connecting rod, and a sealing ring sleeved on the outer wall of the connecting rod is fitted on the inner wall of the pressure fork sleeve seat, the top of the sealing sleeve and the top of the guide sleeve, and a push rod cover and a first gasket are sequentially fitted on the top of the inner wall of the pressure fork sleeve seat, the first gasket and the push rod cover are fixed to the inner wall of the pressure fork sleeve seat by threading, and a second spring is fixedly installed on the bottom of the push rod cover and the top of the sealing ring.

[0013] By adopting the above technical solution, the original welding process of the entire pressure fork body and the pressure plate can be changed to a cold installation or hot installation process, so that the assembly is simple.

[0014] The present invention is further configured such that the outer wall of the guide sleeve is fixed with convex strips distributed at equal distances, and the bottom of the inner wall of the pressure fork sleeve seat is provided with guide grooves that are equidistantly fitted on the surface of the convex strips.

[0015] By adopting the above technical solution: the limiting effect of the guide groove and the convex strip is utilized to ensure the stable guiding performance of the pressure fork sleeve seat.

[0016] The present invention is further configured such that the reset support assembly includes a plurality of rows of support holes equidistantly arranged on the bottom inner wall of the annular groove, and a first spring is fixed to the bottom inner wall of the support hole, a support pad is fixed to the top of the first spring, the support pad is attached to the bottom surface of the valve plate, the outer diameter of the support pad is smaller than the inner diameter of the support hole, and the cross-section of the support pad is designed to be T-shaped.

[0017] By adopting the above technical solution, the valve plate can be easily reset, the downward movement of the valve plate can be buffered, and the squeezing energy of the pressure fork can be further dissipated.

[0018] The present invention is further configured such that a plurality of rows of equally spaced guide rods are fixed to the bottom inner wall of the annular groove, and a plurality of rows of equally spaced guide holes are opened on the valve plate, the guide rods are inserted into the guide holes, and the positions of the guide rods, the support holes and the third air inlet passage are all staggered.

[0019] By adopting the above technical solution, it is ensured that the valve plate can be raised and lowered in the same direction, thereby avoiding the problem of the valve plate being offset.

[0020] The present invention is further configured as follows: an annular sealing groove is provided on one side of the top of the valve cover and one side of the top of the valve seat, and a sealing ring is provided on the inner wall of the annular sealing groove; a sealing groove is provided at the middle position of the bottom of the valve seat and the middle position of the top of the valve cover, and a shaft seal is provided on the inner wall of the sealing groove and is sleeved on the outer wall of the connecting rod; positioning rods distributed at equal distances are fixed to the other side of the top of the valve cover, and positioning holes for inserting the positioning rods are provided at equal distances at the bottom of the valve seat.

[0021] By adopting the above technical solution, the valve cover and the valve seat are ensured to be in a sealed state, and the valve seat and the valve cover can be positioned.

[0022] The present invention is further configured as follows: a protective cover is fixedly installed on the top of the valve seat, and the upper damping pad is fitted on the top inner wall of the protective cover, a sealing plug is installed in the middle position of the protective cover, and the sealing plug is sleeved on the outer wall of the pressure fork sleeve seat, the surface of the protective cover is provided with equidistantly distributed air inlets, and dust filters are fixedly installed on the inner walls of the air inlets, and dust removal components are arranged equidistantly distributed inside the protective cover, and the position of the dust removal components corresponds to the position of the air inlets.

[0023] By adopting the above technical solution: the entire air valve pressure fork is protected by a protective cover, and impurities in the gas can be removed by a dust filter, thereby preventing impurities from adhering to the internal components of the air valve pressure fork and affecting its normal operation.

[0024] The present invention is further configured as follows: the dust removal assembly includes an air collecting cylinder fixedly installed on the inner wall of the top of the protective cover at equal distances, and the top of the pressure plate is provided with mounting grooves for inserting the bottom end of the air collecting cylinder at equal distances, the position of the mounting grooves is staggered with the position of the second through hole, a push-pull rod inserted into the inner wall of the air collecting cylinder is fixed at the middle position of the inner wall of the mounting groove, a piston fitted to the inner wall of the air collecting cylinder is fixed on the top of the push-pull rod, an air pipe is fixed on the top of one side of the air collecting cylinder, and a plurality of third through holes for the air pipes to pass through are provided on the pressure plate, an air hood is fixedly installed on the bottom end of the air pipe, a flow equalizing plate is fixedly installed on the inner wall of the air hood, and the position of the air hood corresponds to the position of the air inlet.

[0025] By adopting the above technical solution, the gas can be sprayed onto the dust filter, and the dust filter can be cleaned to avoid clogging of the dust filter and affecting gas circulation.

[0026] In summary, after adopting the above structure, the present invention has the following advantages compared with the prior art: 1. By adopting the above-mentioned adjustable pressure fork structure, a third spring can be installed between the pressure rod and the pressure plate. When the entire pressure fork moves downward, it can drive the pressure rod to push the valve plate to the valve cover. When it is completely at the bottom, the third spring begins to compress until the pressure fork reaches the bottom. The third spring absorbs most of the remaining force, which can reduce the excess force on the valve plate during work and make the valve plate have a better working condition. Therefore, the adjustable pressure pressure fork structure is adopted to replace the original welded pressure fork structure, so as to avoid the problem of excessive overall pressure of the pressure fork causing damage to the valve plate or shortening the life of the valve plate.

[0027] 2. By adopting the above-mentioned adjustable pressure fork structure, a third spring can be installed between the pressure rod and the pressure plate for fixing without welding. When the pressure rod stroke needs to be adjusted, the pressure rod can be directly replaced without replacing the entire set, which is convenient for adapting to a variety of compressor valves.

[0028] 3. By using the above-mentioned connecting rod, sealing sleeve, nut, sealing ring, first gasket, guide sleeve, second gasket and pressure plate, the entire pressure fork body and the pressure plate can be changed from the original welding process to a cold or hot installation process, making it simple to assemble and reduce costs.

[0029] 4. The above-mentioned reset support assembly and lower damping pad are adopted. On the one hand, the downward movement process of the valve plate is buffered by the action of the first spring and the support pad in the reset support assembly, thereby further dissipating the extrusion energy of the pressure fork. On the other hand, it is convenient for the valve plate to perform the reset operation. The initial force of squeezing the valve plate is also buffered by the action of the lower damping pad, thereby ensuring that the valve plate will not be damaged by extrusion. The vibration level of the valve plate can be effectively controlled to achieve the purpose of shock absorption and reduce noise.

[0030] 5. The above-mentioned protective cover, dust filter and dust removal assembly can protect the entire air valve pressure fork under the action of the protective cover, and remove impurities in the gas through the dust filter to prevent impurities from adhering to the internal components of the air valve pressure fork and affecting its normal operation. The dust filter can also be cleaned through the back-spray effect of the dust removal assembly to prevent the dust filter from being blocked and affecting gas circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A cross-sectional view of an adjustable pressure gas valve pressure fork for a compressor unit according to the present invention; Figure 2 It is a three-dimensional structural schematic diagram of an adjustable pressure gas valve pressure fork for a compressor unit of the present invention; Figure 3 This is a schematic diagram of the structure of a guide sleeve and a support hole of an adjustable pressure gas valve pressure fork for a compressor unit according to the present invention; Figure 4 This is an expanded view of a valve seat and a valve cover of an adjustable pressure gas valve pressure fork for a compressor unit of the present invention; Figure 5 A bottom view of a protective cover and a pressure plate of an adjustable pressure gas valve pressure fork for a compressor unit according to the present invention; Figure 6 It is a schematic diagram of the structure of the mounting groove and the second through hole of the adjustable pressure gas valve pressure fork for the compressor unit of the present invention; Figure 7 This is an expanded view of a pressure rod and a third spring of a pressure fork of an adjustable pressure gas valve used in a compressor unit of the present invention; Figure 8 It is a schematic diagram of the structure of an air collecting cylinder and an air cover of an adjustable pressure air valve pressure fork for a compressor unit of the present invention; Fig. 9 This is a schematic diagram of the push-pull rod and piston structure of an adjustable pressure air valve pressure fork for a compressor unit of the present invention; Fig.10The present invention is an exploded view of a pressure fork sleeve and a pressure plate of a pressure fork of an adjustable pressure gas valve used in a compressor unit.

[0032] Description of the numbers in the figure: 1. Valve seat; 2. Valve cover; 3. Protective cover; 4. Dust filter; 5. Pressure fork sleeve seat; 6. Mandrel cover; 7. Sealing plug; 8. Annular groove; 9. Valve plate; 10. First spring; 11. Guide rod; 12. Connecting rod; 13. Shaft seal; 14. Sealing ring; 15. Positioning rod; 16. Air inlet; 17. Press plate; 18. Dust removal assembly; 1801. Mounting groove; 1802. Third through hole; 1803. Gas collecting cylinder; 1804. Gas cover; 1805. Air pipe; 1806. Flow equalizing plate; 1807. Push-pull rod; 1808. Piston; 19. Sealing sleeve; 20 , nut; 21, second spring; 22, sealing ring; 23, first gasket; 24, guide sleeve; 25, second gasket; 26, adjustable pressure fork structure; 2601, first through hole; 2602, pressure rod; 2603, lower damping pad; 2604, lower support ring; 2605, third spring; 2606, upper support ring; 2607, upper damping pad; 2608, second through hole; 2609, screw groove; 27, support hole; 28, first air inlet channel; 29, second air inlet channel; 30, guide hole; 31, third air inlet channel; 32, annular sealing groove; 33, convex strip. DETAILED DESCRIPTION

[0033] The following describes two implementation modes of the present application in detail with reference to the accompanying drawings.

[0034] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The first implementation method: See also Figure 1-Figure 8 and Fig.10The present invention provides an adjustable pressure gas valve pressure fork for a compressor unit, comprising a valve seat 1 and a valve cover 2, a connecting rod 12 is fixedly installed in the middle position of the valve cover 2, and the valve seat 1 is sleeved on the connecting rod 12 and fits on the top of the valve cover 2, an annular groove 8 is provided on the top of the valve cover 2, and a valve plate 9 fitted on the bottom surface of the valve seat 1 is provided inside the annular groove 8, and a reset support component for supporting the valve plate 9 is provided at the bottom of the annular groove 8, a plurality of rows of first air inlet channels 28 distributed at equal distances are provided on the valve seat 1, and the position of the first air inlet channels 28 is staggered with the position of the first through hole 2601, a plurality of rows of third air inlet channels 31 distributed at equal distances and connected to the annular groove 8 are provided on the valve cover 2, and a plurality of rows of second air inlet channels 31 distributed at equal distances and connected to the annular groove 8 are provided on the valve plate 9 Channel 29, the position of the second air inlet channel 29 corresponds to the position of the third air inlet channel 31, and the position of the second air inlet channel 29 is staggered with the position of the first air inlet channel 28. The outer wall of the connecting rod 12 is sequentially sleeved with a sealing sleeve 19 and a guide sleeve 24 that are fitted on the top of the valve seat 1, and the outer wall of the guide sleeve 24 is sleeved with a pressure fork sleeve seat 5, and the bottom of the outer wall of the pressure fork sleeve seat 5 is sequentially sleeved with a pressure plate 17 and a second gasket 25, and the pressure plate 17 and the second gasket 25 are fixed to the pressure fork sleeve seat 5 in a screw connection manner, the top of the connecting rod 12 is screwed with a nut 20, and the inner wall of the pressure fork sleeve seat 5 and the top of the sealing sleeve 19 and the top of the guide sleeve 24 are fitted with a sealing ring 22 sleeved on the outer wall of the connecting rod 12, and the inner wall top of the pressure fork sleeve seat 5 is sequentially fitted with a push rod cover 6 and the first gasket 23, the first gasket 23 and the push rod cover 6 are fixed to the inner wall of the pressure fork sleeve seat 5 by screw connection, the push rod cover 6 is connected to the hydraulic cylinder, and the hydraulic cylinder directly applies force to the push rod cover 6, the bottom of the push rod cover 6 and the top of the blocking ring 22 are fixedly installed with a second spring 21, the outer wall of the guide sleeve 24 is fixed with convex strips 33 distributed at equal distances, and the bottom of the inner wall of the pressure fork sleeve seat 5 is provided with guide grooves that are equidistantly fitted on the surface of the convex strips 33, and the limiting effect of the guide grooves and the convex strips 33 is utilized to ensure the stable guiding performance of the pressure fork sleeve seat 5, and the entire pressure fork body and the pressure plate 17 can be changed from the original welding process to a cold installation or hot installation process, so that the assembly is simple and the cost is reduced, and a plurality of rows of equidistantly distributed adjustable pressure fork structures 26 are arranged on the pressure plate 17. The structure 26 includes a plurality of rows of second through holes 2608 equidistantly provided on the pressure plate 17, and the inner walls of the second through holes 2608 are all plugged with pressure rods 2602, a plurality of rows of first through holes 2601 equidistantly provided on the valve seat 1, and the bottom of the pressure rod 2602 is plugged into the inside of the first through hole 2601, a lower support ring 2604 is fixed to the outer wall of the pressure rod 2602 near the middle position, and a plurality of rows of upper support rings 2606 equidistantly sleeved on the outer wall of the pressure rod 2602 are fixed to the bottom of the pressure plate 17, and a third spring 2605 is fixedly installed on the inner wall of the upper support ring 2606 and the inner wall of the lower support ring 2604. By adopting the above-mentioned adjustable pressure fork structure 26, the third spring 2605 can be installed between the pressure rod 2602 and the pressure plate 17. When the entire pressure fork moves downward,It can drive the pressure rod 2602 to push the valve plate 9 to the valve cover 2. When it is completely at the bottom, the third spring 2605 begins to compress until the pressure fork reaches the bottom. The third spring 2605 absorbs most of the remaining force, which can reduce the excess force on the valve plate 9 during operation, so that the valve plate 9 has a better working state, avoid the problem of excessive pressure on the pressure fork causing damage to the valve plate 9 or shortening the life of the valve plate 9, and install the third spring 2605 between the pressure rod 2602 and the pressure plate 17 for fixing, without welding. When the stroke of the pressure rod 2602 needs to be adjusted, the pressure rod 2602 can be directly replaced without the need to replace the entire set, which is convenient for adapting to a variety of compressor valves.

[0038] In order to avoid other damage problems of valve plate 9, refer to Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 7 The bottom and top of the pressure rod 2602 are both provided with screw grooves 2609, and the inner walls of the two screw grooves 2609 are respectively screwed with a lower damping pad 2603 and an upper damping pad 2607. The lower damping pad 2603 mentioned above can buffer the initial force of squeezing the valve plate 9 to ensure that the valve plate 9 will not be squeezed and damaged, and can effectively control the vibration level of the valve plate 9 to achieve the purpose of shock absorption and reduce noise. The upper damping pad 2607 mentioned above can buffer the upward movement process of the pressure rod 2602.

[0039] In order to facilitate the valve plate 9 to return to its original position, refer to Figure 1 , Figure 3 and Figure 4 The reset support assembly includes a plurality of rows of support holes 27 equidistantly arranged on the bottom inner wall of the annular groove 8, and the bottom inner wall of the support hole 27 is fixed with a first spring 10, and the top of the first spring 10 is fixed with a support pad, which is attached to the bottom surface of the valve plate 9, and the outer diameter of the support pad is smaller than the inner diameter of the support hole 27. The cross-section of the support pad is designed to be T-shaped. The above-mentioned first spring 10 and support pad are used to facilitate the reset operation of the valve plate 9, buffer the downward movement process of the valve plate 9, and further dissipate the extrusion energy of the pressure fork.

[0040] In order to ensure the positioning of the valve plate 9, refer to Figure 1 and Figure 4 A plurality of rows of equally spaced guide rods 11 are fixed to the inner wall of the bottom of the annular groove 8, and a plurality of rows of equally spaced guide holes 30 are opened on the valve plate 9. The guide rods 11 are inserted into the guide holes 30. The positions of the guide rods 11, the support holes 27 and the third air inlet passage 31 are all staggered. The guide rods 11 and the guide holes 30 are used to ensure that the valve plate 9 can be raised and lowered in the same direction, thereby avoiding the problem of the valve plate 9 being offset.

[0041] In order to ensure the sealing performance and positioning performance of the valve cover 2 and the valve seat 1, refer to Figure 1 , Figure 3 and Figure 4 , an annular sealing groove 32 is provided on one side of the top of the valve cover 2 and one side of the top of the valve seat 1, and a sealing ring 14 is provided on the inner wall of the annular sealing groove 32, a sealing groove is provided at the middle position of the bottom of the valve seat 1 and the middle position of the top of the valve cover 2, and a shaft seal 13 sleeved on the outer wall of the connecting rod 12 is provided on the inner wall of the sealing groove, and equidistantly distributed positioning rods 15 are fixed to the other side of the top of the valve cover 2, and equidistantly distributed positioning rods 15 are provided at the bottom of the valve seat 1. Positioning holes for inserting the positioning rods 15 are provided, the above-mentioned shaft seal 13 and sealing ring 14 are used to ensure that the valve cover 2 and the valve seat 1 are in a sealed state, and the above-mentioned positioning rod 15 and positioning hole can be used to position the valve seat 1 and the valve cover 2.

[0042] In summary, the working principle of the present invention is as follows: when the compressor is inhaled, pressure is applied by the hydraulic cylinder to drive the entire pressure fork to move downward, so that the push rod cover 6, the pressure fork sleeve seat 5, the pressure plate 17 and the adjustable pressure fork structure 26 move downward as a whole, driving the pressure rod 2602 to push the valve plate 9 to the valve cover 2, and when it is completely at the bottom, the third spring 2605 begins to compress, and the support pad and the first spring 10 in the reset support assembly are also compressed until the pressure fork is at the bottom. At this time, the first intake channel 28, the second intake channel 29 and the third intake channel 31 are guided. The air intake operation is carried out, so that the third spring 2605 and the first spring 10 absorb most of the remaining force, which can reduce the excess force on the valve plate 9 during operation and make the valve plate 9 have a better working condition; when the compressor is compressed, the hydraulic cylinder no longer applies force, and the valve plate 9 is lifted up under the action of the first spring 10 and the third spring 2605, and the first air intake channel 28 is blocked through the valve plate 9, and the gas cannot escape. The pressure plate 17, the pressure fork sleeve 5 and the adjustable pressure fork structure 26 will be reset under the action of the second spring 21.

[0043] Second implementation method: This embodiment is based on the first embodiment, and the following structure is added to enable the present application to have the functions of removing impurities and preventing clogging. The specific configuration is as follows: Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 and Fig. 9As shown, a protective cover 3 is fixedly installed on the top of the valve seat 1, and the upper damping pad 2607 is attached to the top inner wall of the protective cover 3, a sealing plug 7 is installed in the middle position of the protective cover 3, and the sealing plug 7 is sleeved on the outer wall of the pressure fork sleeve seat 5, and the surface of the protective cover 3 is provided with air inlets 16 distributed at equal distances, and the inner walls of the air inlets 16 are fixedly installed with dust filters 4, and the interior of the protective cover 3 is provided with dust removal components 18 distributed at equal distances, and the position of the dust removal components 18 corresponds to the position of the air inlet 16, except The dust assembly 18 includes a gas collecting cylinder 1803 fixedly installed on the inner wall of the top of the protective cover 3 at an equal distance, and a mounting groove 1801 is opened on the top of the pressure plate 17 at an equal distance for the bottom end of the gas collecting cylinder 1803 to be inserted, the position of the mounting groove 1801 is staggered with the position of the second through hole 2608, and a push-pull rod 1807 inserted into the inner wall of the gas collecting cylinder 1803 is fixed in the middle position of the inner wall of the mounting groove 1801, and a piston 1808 attached to the inner wall of the gas collecting cylinder 1803 is fixed on the top of the push-pull rod 1807. An air pipe 1805 is fixed to the top of one side of the air cylinder 1803, and a plurality of third through holes 1802 for the air supply pipe 1805 to pass through are opened on the pressure plate 17. An air hood 1804 is fixedly installed at the bottom of the air pipe 1805, and a flow equalizing plate 1806 is fixedly installed on the inner wall of the air hood 1804. The position of the air hood 1804 corresponds to the position of the air inlet 16. The above-mentioned protective cover 3 can protect the entire air valve pressure fork, and the above-mentioned dust filter 4 can remove dust in the gas. Debris can be prevented by adhering to the internal components of the air valve pressure fork and affecting its normal operation. Moreover, when the pressure plate 17 is compressed, the gas collecting cylinder 1803, the air pipe 1805, the push-pull rod 1807 and the piston 1808 form a vacuum cylinder structure as a whole, and a part of the gas is stored in the gas collecting cylinder 1803. When the entire air valve pressure fork is reset, the entire vacuum cylinder structure releases the gas and sprays the gas onto the dust filter 4, so as to clean the dust filter 4 and avoid clogging of the dust filter 4 and affecting the gas circulation.

[0044] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An adjustable pressure gas valve fork for a compressor unit, comprising a valve seat (1) and a valve cover (2), characterized in that: A connecting rod (12) is fixedly installed at the middle position of the valve cover (2), and the valve seat (1) is sleeved on the connecting rod (12) and fits on the top of the valve cover (2). An annular groove (8) is opened on the top of the valve cover (2), and a valve plate (9) is arranged inside the annular groove (8) and fits on the bottom surface of the valve seat (1). A reset support component for supporting the valve plate (9) is arranged at the bottom of the annular groove (8). The outer wall of the connecting rod (12) is sleeved with a sealing sleeve (19) and a guide sleeve (24) which fit on the top of the valve seat (1) in sequence, and the outer wall of the guide sleeve (24) is sleeved with a pressure fork sleeve seat (5). The bottom of the outer wall of the pressure fork sleeve seat (5) is sleeved with a pressure plate (17) and a second gasket (25) in sequence, and the pressure plate (17) and the second gasket (25) are fixed to the pressure fork sleeve seat (5) by screw connection. ), a plurality of rows of equidistantly distributed adjustable pressure fork structures (26) are provided on the pressure plate (17), the adjustable pressure fork structures (26) comprising a plurality of rows of second through holes (2608) equidistantly provided on the pressure plate (17), and the inner walls of the second through holes (2608) are all plugged with pressure rods (2602), a plurality of rows of equidistantly distributed first through holes (2601) are provided on the valve seat (1), and the bottom of the pressure rod (2602) is plugged into the inside of the first through hole (2601), the outer wall of the pressure rod (2602) near the middle position is fixed with a lower support ring (2604), and a plurality of rows of equidistantly sleeved upper support rings (2606) are fixed to the bottom of the pressure plate (17), and the inner wall of the upper support ring (2606) and the inner wall of the lower support ring (2604) are fixedly installed with a third spring (2605).

2. The adjustable pressure valve pressure fork for a compressor unit according to claim 1, characterized in that: The bottom and top of the pressure rod (2602) are both provided with screw-connecting grooves (2609), and the inner walls of the two screw-connecting grooves (2609) are respectively screw-connected with a lower damping pad (2603) and an upper damping pad (2607).

3. The adjustable pressure valve pressure fork for a compressor unit according to claim 1, characterized in that: The valve seat (1) is provided with a plurality of rows of first air inlet channels (28) which are distributed at equal distances, and the positions of the first air inlet channels (28) are staggered with the positions of the first through holes (2601); the valve cover (2) is provided with a plurality of rows of third air inlet channels (31) which are distributed at equal distances and are connected to the annular groove (8); and the valve plate (9) is provided with a plurality of rows of second air inlet channels (29) which are distributed at equal distances, and the positions of the second air inlet channels (29) correspond to the positions of the third air inlet channels (31), and the positions of the second air inlet channels (29) are staggered with the positions of the first air inlet channels (28).

4. The adjustable pressure valve pressure fork for a compressor unit according to claim 3, characterized in that: The top of the connecting rod (12) is threadedly connected with a nut (20), and the inner wall of the pressure fork sleeve seat (5), the top of the sealing sleeve (19) and the top of the guide sleeve (24) are fitted with a sealing ring (22) sleeved on the outer wall of the connecting rod (12), and the top of the inner wall of the pressure fork sleeve seat (5) is fitted with a push rod cover (6) and a first gasket (23) in sequence, the first gasket (23) and the push rod cover (6) are fixed to the inner wall of the pressure fork sleeve seat (5) by threading, and the bottom of the push rod cover (6) and the top of the sealing ring (22) are fixedly installed with a second spring (21).

5. The adjustable pressure valve pressure fork for a compressor unit according to claim 4, characterized in that: The outer wall of the guide sleeve (24) is fixed with convex strips (33) distributed at equal distances, and the bottom of the inner wall of the pressure fork sleeve seat (5) is provided with guide grooves that are equidistantly fitted on the surface of the convex strips (33).

6. The adjustable pressure valve pressure fork for a compressor unit according to claim 5, characterized in that: The reset support assembly comprises a plurality of rows of support holes (27) equidistantly arranged on the bottom inner wall of the annular groove (8), and the bottom inner wall of each support hole (27) is fixed with a first spring (10), and the top of each first spring (10) is fixed with a support pad, the support pad is attached to the bottom surface of the valve plate (9), the outer diameter of the support pad is smaller than the inner diameter of the support hole (27), and the cross section of the support pad is designed to be T-shaped.

7. The adjustable pressure gas valve pressure fork for a compressor unit according to claim 6, characterized in that: A plurality of rows of equally spaced guide rods (11) are fixed to the inner wall of the bottom of the annular groove (8), and a plurality of rows of equally spaced guide holes (30) are provided on the valve plate (9), the guide rods (11) are inserted into the guide holes (30), and the positions of the guide rods (11), the support holes (27) and the third air inlet passage (31) are all staggered.

8. The adjustable pressure gas valve pressure fork for a compressor unit according to claim 7, characterized in that: An annular sealing groove (32) is provided on one side of the top of the valve cover (2) and one side of the top of the valve seat (1), and a sealing ring (14) is provided on the inner wall of the annular sealing groove (32). A sealing groove is provided at the middle position of the bottom of the valve seat (1) and the middle position of the top of the valve cover (2), and a shaft seal (13) is provided on the inner wall of the sealing groove and is sleeved on the outer wall of the connecting rod (12). Positioning rods (15) are fixed to the other side of the top of the valve cover (2) at equal distances, and positioning holes for inserting the positioning rods (15) are provided at equal distances at the bottom of the valve seat (1).

9. The adjustable pressure valve pressure fork for a compressor unit according to claim 2, characterized in that: A protective cover (3) is fixedly mounted on the top of the valve seat (1), and an upper damping pad (2607) is fitted to the top inner wall of the protective cover (3); a sealing plug (7) is mounted in the middle of the protective cover (3), and the sealing plug (7) is sleeved on the outer wall of the pressure fork sleeve (5); the surface of the protective cover (3) is provided with air inlets (16) distributed at equal distances, and dust filters (4) are fixedly mounted on the inner walls of the air inlets (16); dust removal components (18) are arranged inside the protective cover (3) at equal distances, and the position of the dust removal components (18) corresponds to the position of the air inlets (16).

10. The adjustable pressure gas valve pressure fork for a compressor unit according to claim 9, characterized in that: The dust removal assembly (18) comprises a gas collecting cylinder (1803) fixedly mounted at equal distances on the inner wall of the top of the protective cover (3), and a mounting groove (1801) is provided at equal distances on the top of the pressure plate (17) for inserting the bottom end of the gas collecting cylinder (1803), the position of the mounting groove (1801) is staggered with the position of the second through hole (2608), a push-pull rod (1807) inserted into the inner wall of the gas collecting cylinder (1803) is fixed in the middle position of the inner wall of the mounting groove (1801), and the top of the push-pull rod (1807) is fixedly mounted on the inner wall of the gas collecting cylinder (1803). A piston (1808) is fixed to the inner wall of the gas collecting cylinder (1803), an air pipe (1805) is fixed to the top of one side of the gas collecting cylinder (1803), and a plurality of third through holes (1802) for the air supply pipes (1805) to pass through are opened on the pressure plate (17), an air hood (1804) is fixedly installed at the bottom end of the air pipe (1805), and a flow equalizing plate (1806) is fixedly installed on the inner wall of the air hood (1804), and the position of the air hood (1804) corresponds to the position of the air inlet (16).

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