Exhaust one-way valve with annular valve plate

Abstract

The utility model provides an annular valve plate exhaust one-way valve, and relates to the field of compressors. The exhaust one-way valve with the annular valve plate comprises an upper end cover, a lower end cover, a valve seat, a valve cover assembly, the annular valve plate, a locking piece and an elastic piece. One end of the valve seat is mounted on the upper end cover, and the other end of the valve seat is mounted on the lower end cover; the valve deck assembly comprises a valve deck and a stud, the valve deck is located in the lower end cover, one end of the stud is connected with the valve deck, and the other end of the stud penetrates through the valve seat to be connected with the locking piece. The valve seat is provided with a first flow channel, the annular valve plate is located between the valve seat and the valve deck, the annular valve plate corresponds to the first flow channel in position, one end of the elastic piece is installed on the valve deck, and the other end of the elastic piece is connected with the annular valve plate. The valve cover is provided with a second flow channel, and the second flow channel is located between the elastic piece and the stud. According to the exhaust one-way valve with the annular valve plate, the technical problems that in the prior art, an exhaust one-way valve is short in service life, poor in reverse sealing effect, large in stroke, slow in response and high in noise are solved.

Description

Technical Field

[0001] This application relates to the field of compressors, and more specifically, to a one-way exhaust valve with an annular valve plate. Background Technology

[0002] The compressor discharge check valve is an important component in the compressor used to control the discharge of gas from the compressor and prevent the reverse leakage of gas media from outside the system.

[0003] As positive displacement compressors have evolved towards higher pressure and larger displacement in recent years, the requirements for compressor discharge check valves have become increasingly stringent. Discharge check valves are subjected to harsh loads and environments during operation, including tension, compression, impact, wear, corrosion, and high temperatures. With the increasing demand for high-pressure, high-displacement compressors, the operating conditions of discharge check valves are becoming increasingly severe, and the requirements for them are becoming more stringent. The performance of the discharge check valve directly affects the compressor's discharge capacity, power consumption, and operational reliability. However, the existing exhaust check valves in various high-pressure, high-displacement positive displacement compressors are not yet mature, mainly in the following aspects: (1) In hydrogen medium, the compatibility between the pressure-bearing components of the valve and the hydrogen medium is poor, and the hydrogen embrittlement phenomenon will be aggravated under high exhaust pressure; (2) Under high frequency and harsh working conditions, the exhaust check valve generally has a short service life; (3) Poor reverse sealing effect; (4) In order to cope with large displacement, the stroke is increased, resulting in slow response and poor performance of the check valve; (5) Based on the above points 2 and 4, namely the factors of high frequency and large stroke, the exhaust check valve opens and closes frequently, resulting in abnormally high noise. Utility Model Content

[0004] The purpose of this application is to provide an annular valve plate exhaust check valve to alleviate the technical problems of short lifespan, poor reverse sealing effect, large stroke, slow response and high noise in the prior art exhaust check valve.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] The annular valve plate exhaust check valve provided by this utility model includes an upper end cover, a lower end cover, a valve seat, a valve cover assembly, an annular valve plate, a locking element, and an elastic element;

[0007] One end of the valve seat is installed on the upper end cover, and the other end is installed on the lower end cover, and a sealing element is sandwiched between the valve seat and the upper end cover and the lower end cover;

[0008] The valve cover assembly includes a valve cover and a stud. The valve cover is located inside the lower end cover, and there is a gap between the inner wall of the lower end cover and the outer wall of the valve cover. One end of the stud is connected to the valve cover, and the other end passes through the valve seat and is connected to the locking member.

[0009] The valve seat is provided with a first flow channel extending along the axial direction of the valve seat, the annular valve disc is located between the valve seat and the valve cover, and the annular valve disc corresponds to the position of the first flow channel, one end of the elastic member is mounted to the valve cover, and the other end is connected to the annular valve disc.

[0010] The valve cover is provided with a second flow channel extending along the axial direction of the valve cover, and the second flow channel is located between the elastic member and the stud.

[0011] Further, the end surface of the annular valve disc close to the valve seat is provided as a flat surface.

[0012] Further, the end surface of the annular valve disc close to the valve seat is connected through a first round corner transition between the inner wall and the outer wall.

[0013] Further, the end surface of the annular valve disc close to the valve seat is provided as a conical surface or a spherical surface.

[0014] Further, the surface of the valve cover close to the valve seat is provided with a tapered mounting hole, the cross-sectional size of the tapered mounting hole gradually decreases from one end close to the valve seat to one end away from the valve seat, and the elastic member is mounted in the tapered mounting hole.

[0015] Further, the bottom wall of the tapered mounting hole is provided with a flow guide through hole.

[0016] Further, the surface of the valve cover close to the valve seat is provided with a guide portion, the side wall of the guide portion is provided with a plurality of grooves arranged along the circumferential direction of the valve cover.

[0017] The top surface of the guide portion abuts against the valve seat, and the annular valve disc is sleeved on the guide portion in a clearance fit with the guide portion.

[0018] Further, the surface of the valve seat close to the valve cover is provided with an annular groove, and the annular groove communicates with the first flow channel; the cross-sectional size of the first flow channel gradually decreases from one end away from the valve cover to one end close to the valve cover.

[0019] Further, the valve seat comprises a valve seat body, a first limiting disc and a second limiting disc, the first limiting disc and the second limiting disc are respectively located at both ends of the valve seat body.

[0020] The first limiting disc extends into the upper end cover, and a sealing member is clamped between the first limiting disc and the upper end cover, and the second limiting disc extends into the lower end cover, and a sealing member is clamped between the second limiting disc and the lower end cover.

[0021] The upper surface of the valve seat body is clamped with a sealing element between the upper end cover, and the lower surface is clamped with a sealing element between the lower end cover.

[0022] Further, the valve cover is threadedly connected with the stud, or the valve cover is integrally formed with the stud.

[0023] In combination with the above technical solutions, the technical effects achieved by the utility model are analyzed as follows.

[0024] The annular valve plate exhaust one-way valve provided by the utility model comprises an upper end cover, a lower end cover, a valve seat, a valve cover assembly, an annular valve plate, a locking element and an elastic element; one end of the valve seat is installed on the upper end cover, the other end is installed on the lower end cover, and sealing elements are clamped between the valve seat and the upper end cover and the lower end cover; the valve cover assembly comprises a valve cover and a stud, the valve cover is located in the lower end cover, and there is a gap between the inner wall of the lower end cover and the outer wall of the valve cover, one end of the stud is connected with the valve cover, and the other end penetrates through the valve seat and is connected with the locking element; the valve seat is provided with a first flow channel extending along the axial direction of the valve seat, the annular valve plate is located between the valve seat and the valve cover, and the annular valve plate corresponds to the position of the first flow channel, one end of the elastic element is installed on the valve cover, and the other end is connected with the annular valve plate; the valve cover is provided with a second flow channel extending along the axial direction of the valve cover, and the second flow channel is located between the elastic element and the stud.

[0025] The two ends of the valve seat are sealingly connected with the upper end cover and the lower end cover through sealing elements. The valve cover is connected with the stud, the elastic element is installed in the valve cover, and the annular valve plate is gapingly matched with the valve cover; there is a gap between the outer wall of the valve cover and the inner wall of the lower end cover, and the gap forms an annular channel. The stud is connected with the valve cover and connected with the locking element by penetrating through the valve seat, so that the valve cover and the valve seat are connected.

[0026] When the annular valve plate exhaust one-way valve works normally, gas flows from the valve seat to the valve cover, that is, the gas flows into the upper end cover, opens the annular valve plate after passing through the first flow channel of the valve seat, and is divided into the second flow channel of the valve cover or the annular channel between the valve cover and the lower end cover, and then flows into the lower end cover after flowing through the second flow channel and the annular channel, and converges and flows out. Conversely, the gas flows from the valve cover to the valve seat, the annular valve plate is adhered to the valve seat under the action of the elastic element and the gas medium force, and sealing is maintained, so that the function of the exhaust one-way valve is achieved.

[0027] The annular valve plate is used in the annular valve plate exhaust one-way valve, that is, the valve plate is annular; the annular valve plate can meet the flow demand under a small opening height, so that the valve plate can be quickly opened and closed, the response speed of the valve plate is effectively improved, noise is reduced, and the service life of the one-way valve is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those of ordinary skill in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0029] Figure 1 The structure schematic diagram of the annular valve plate exhaust one-way valve provided for the embodiment one of the present application;

[0030] Figure 2 The top view of the valve cover in the annular valve plate exhaust one-way valve provided for the embodiment one of the present application;

[0031] Figure 3 The structure schematic diagram of the valve seat in the annular valve plate exhaust one-way valve provided for the embodiment one of the present application; Figure 2 The cross-sectional view at A-A;

[0032] Figure 4 The structure schematic diagram of the annular valve plate exhaust one-way valve provided for the embodiment one of the present application;

[0033] Figure 5 The structure schematic diagram of the annular valve plate exhaust one-way valve provided for the embodiment two of the present application.

[0034] The icon:

[0035] 100-upper end cover; 110-conical flow channel;

[0036] 200-lower end cover;

[0037] 300-valve seat; 310-first flow channel; 320-valve seat body; 330-first limiting disc; 340-second limiting disc; 350-ring groove;

[0038] 400-valve cover assembly; 410-valve cover; 411-second flow channel; 412-conical mounting hole; 413-flow guide through hole; 414-guide portion; 415-groove; 420-stud;

[0039] 500-annular valve plate;

[0040] 600-locking piece;

[0041] 700-elastic member;

[0042] 800-sealing member. DETAILED DESCRIPTION

[0043] To make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the following will briefly describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Generally, the components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0044] In the description of the present application, it should be noted that the positions or location relationships indicated by the terms "inner", "outer" and the like are based on the positions or location relationships shown in the drawings, or the positions or location relationships commonly placed when the products of the present application are used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0045] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "connection" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0046] Embodiment one

[0047] The annular valve plate exhaust one-way valve provided by the embodiment of the present application comprises an upper end cover 100, a lower end cover 200, a valve seat 300, a valve cover assembly 400, an annular valve plate 500, a locking piece 600 and an elastic piece 700; one end of the valve seat 300 is installed on the upper end cover 100, the other end is installed on the lower end cover 200, and a sealing piece 800 is clamped between the valve seat 300 and the upper end cover 100 and the lower end cover 200; the valve cover assembly 400 comprises a valve cover 410 and a stud 420, the valve cover 410 is located in the lower end cover 200, and there is a gap between the inner wall of the lower end cover 200 and the outer wall of the valve cover 410, one end of the stud 420 is connected with the valve cover 410, and the other end penetrates through the valve seat 300 and is connected with the locking piece 600; the valve seat 300 is provided with a first flow channel 310 extending along the axial direction of the valve seat 300, the annular valve plate 500 is located between the valve seat 300 and the valve cover 410, and the annular valve plate 500 corresponds to the position of the first flow channel 310, one end of the elastic piece 700 is installed on the valve cover 410, and the other end is connected with the annular valve plate 500; the valve cover 410 is provided with a second flow channel 411 extending along the axial direction of the valve cover 410, and the second flow channel 411 is located between the elastic piece 700 and the stud 420.

[0048] Specifically, in the embodiment, the elastic member 700 is a spring, the locking member 600 is a self-locking nut, and the sealing member 800 is an O-ring, of course, other sealing structures with sealing properties should be within the protection scope of the embodiment of the utility model.

[0049] The valve seat 300 is sealingly connected with the upper end cover 100 and the lower end cover 200 at both ends through the sealing member 800. The valve cover 410 is connected with the stud 420, the elastic member 700 is installed in the valve cover 410, and the annular valve disc 500 is gap-coupled with the valve cover 410. The outer wall of the valve cover 410 and the inner wall of the lower end cover 200 have a gap, and the gap forms an annular channel. The stud 420 is connected with the valve cover 410 and connected with the locking member 600 through the valve seat 300, so that the valve cover 410 and the valve seat 300 are connected.

[0050] When the annular valve disc exhaust one-way valve works normally, the gas flows from the valve seat 300 to the valve cover 410, that is, the gas flows into the upper end cover 100, opens the annular valve disc 500 after passing through the first flow channel 310 of the valve seat 300, and flows into the second flow channel 411 of the valve cover 410 or the annular channel between the valve cover 410 and the lower end cover 200, and then flows into the lower end cover 200 after flowing through the second flow channel 411 and the annular channel. The gas flows out after converging. Conversely, the gas flows from the valve cover 410 to the valve seat 300, and the annular valve disc 500 is adhered to the valve seat 300 to keep sealing under the action of the elastic member 700 and the gas medium force, thereby achieving the function of the exhaust one-way valve.

[0051] The annular valve disc 500 is used in the annular valve disc exhaust one-way valve, that is, the valve disc is annular. The annular valve disc 500 can meet the flow demand under a small opening height, so that the valve disc can be quickly opened and closed, the response speed of the valve disc is effectively improved, noise is reduced, and the service life of the one-way valve is prolonged.

[0052] The structure and shape of the annular valve disc exhaust one-way valve are described in detail as follows:

[0053] In the optional scheme of the embodiment of the utility model, referring to Figure 1 , the valve cover 410 is threadedly connected with the stud 420.

[0054] Specifically, the valve cover 410 is made of 316, which is a material widely used in hydrogen medium; the 316 material is a cold deformed 316 material, which further improves the strength of the ring-shaped valve plate exhaust one-way valve under the premise of meeting the excellent compatibility with hydrogen medium. Further, the material of the valve cover 410 can be replaced by other high-strength hydrogen embrittlement resistant materials. The center of the valve cover 410 is provided with a threaded hole for connecting with the stud 420, facilitating coaxial positioning assembly with the valve seat 300.

[0055] The valve cover 410 is threadedly connected with the stud 420, realizing detachable connection of the valve cover 410 and the stud 420, facilitating installation and disassembly.

[0056] In the optional scheme of the embodiment of the utility model, the end face of the ring-shaped valve plate 500 close to the valve seat 300 is set as a plane.

[0057] Specifically, the upper end face of the ring-shaped valve plate 500 is set as a plane, and the upper end face is used for abutting with the lower end face of the valve seat 300.

[0058] The upper end face of the ring-shaped valve plate 500 is a sealing surface, and the sealing surface is set as a plane, enhancing the sealing effect.

[0059] In the optional scheme of the embodiment of the utility model, the end face of the ring-shaped valve plate 500 close to the valve seat 300 is connected with the inner wall through a first round corner, and the end face of the ring-shaped valve plate 500 close to the valve seat 300 is connected with the outer wall through a second round corner.

[0060] Specifically, in the embodiment, the specifications of the first round corner and the second round corner are different.

[0061] The sealing surface of the ring-shaped valve plate 500 has round corners (including the first round corner and the second round corner) of different specifications inside and outside the ring, which are used for adjusting the width of the sealing surface and controlling the opening force of the ring-shaped valve plate 500 within an optimal range.

[0062] In the optional scheme of the embodiment of the utility model, the end face of the ring-shaped valve plate 500 close to the valve seat 300 is set as a conical surface or a spherical surface.

[0063] The sealing surface of the ring-shaped valve plate 500 is set as a conical surface or a spherical surface, and is linearly sealed with the valve seat 300.

[0064] In the optional scheme of the embodiment of the utility model, the material of the ring-shaped valve plate 500 is set as a high-temperature alloy material or a carbon fiber reinforced PEEK material to cope with different working conditions.

[0065] Specifically, the high-temperature alloy material has high high-temperature strength, good oxidation resistance and corrosion resistance, good fatigue performance, fracture toughness and other comprehensive performance. The high-temperature alloy is single austenite structure, and has good organizational stability and use reliability at various temperatures. Therefore, the annular valve plate 500 material is commonly used in the super-high-temperature and high-pressure volumetric compressor. PEEK is a special engineering plastic with excellent properties such as high temperature resistance, self-lubrication, easy processing and high mechanical strength, and is widely used in many fields. We use it as the friction pair matching material of the guide protrusion of the valve cover 410 to ensure the sealing effect and play its characteristics of high temperature resistance, self-lubrication and wear resistance. The annular valve plate 500 material also has the characteristics of small density and light weight, which can reduce the impact of the annular valve plate 500 on the sealing surface of the valve seat 300, and effectively improve the service life of the one-way valve.

[0066] In the optional scheme of the embodiment of the utility model, the surface of valve cover 410 close to valve seat 300 is equipped with taper mounting hole 412, the cross section size of taper mounting hole 412 gradually reduces from the end close to valve seat 300 to the end far from valve seat 300, and elastic part 700 is installed in taper mounting hole 412.

[0067] Specifically, the first flow channel 310, the second flow channel 411 and the taper mounting hole 412 are all provided with a plurality of first flow channels 310, a plurality of second flow channels 411 and a plurality of taper mounting holes 412, the plurality of first flow channels 310 are arranged along the circumference of the valve seat 300, the plurality of second flow channels 411 are arranged along the circumference of the valve cover 410, and the plurality of taper mounting holes 412 are arranged along the circumference of the valve cover 410. Preferably, the plurality of first flow channels 310 and the plurality of taper mounting holes 412 are one-to-one corresponding, so that the annular valve plate 500 can be sealed under the action of the elastic part 700 in the taper mounting hole 412. Referring to Figure 2 And Figure 3 , the second flow channel 411 and the taper mounting hole 412 are arranged in a staggered manner along the circumference of the valve cover 410, thereby enhancing the strength of the valve cover 410.

[0068] The taper mounting hole 412 avoids the friction between the elastic part 700 and the valve cover 410 under the premise of ensuring the guiding and positioning, thereby improving the stability and service life of the elastic part 700. Further, the taper mounting hole 412 can be replaced by a bushing lined with non-metallic wear-resistant material to achieve the same functional effect.

[0069] In the optional scheme of the embodiment of the utility model, the bottom wall of the taper mounting hole 412 is provided with a flow guide through hole 413.

[0070] The taper mounting hole 412 is provided with a small-aperture flow guide through hole 413 at the bottom, which is beneficial to the elastic part 700 when it is not disturbed by the gas medium pressure.

[0071] In the optional scheme of the utility model embodiment, the surface of the valve cover 410 close to the valve seat 300 is provided with a guide part 414, the annular valve sheet 500 is sleeved on the guide part 414, and the annular valve sheet 500 is in clearance fit with the guide part 414.

[0072] Specifically, the tolerance fit between the annular valve sheet 500 and the guide part 414 is selected as H7 / g6.

[0073] The clearance fit between the annular valve sheet 500 and the guide part 414 ensures that the annular valve sheet 500 and the guide part 414 will not be jammed due to thermal deformation difference under extreme working condition temperature.

[0074] On the basis of the above optional scheme, referring to Figure 3 , the side wall of the guide part 414 is provided with a plurality of grooves 415 arranged along the circumference of the valve cover 410; the top surface of the guide part 414 is in abutment with the valve seat 300, and the annular valve sheet 500 is sleeved on the guide part 414 and in clearance fit with the guide part 414.

[0075] Specifically, the side wall of the guide part 414 is provided with a plurality of grooves 415, so that the cross section of the guide part 414 is in petal shape.

[0076] The valve cover 410 is provided with the guide part 414, the guide part 414 is in guide fit with the annular valve sheet 500; the side wall of the guide part 414 is provided with the groove 415, so that the contact area of the guide part 414 and the annular valve sheet 500 is reduced on the basis of ensuring the guide function of the guide part 414, and the friction loss and local high temperature are reduced.

[0077] In the optional scheme of the utility model embodiment, the surface of the valve seat 300 close to the valve cover 410 is provided with an annular groove 350, and the annular groove 350 is in communication with the first flow channel 310; referring to Figure 4 , the cross-sectional dimension of the first flow channel 310 gradually decreases from one end away from the valve cover 410 to one end close to the valve cover 410.

[0078] Specifically, the valve seat 300 is provided with the annular groove 350, and at the same time, the cross-sectional dimension of the first flow channel 310 gradually decreases from top to bottom. The annular groove 350 extends along the circumference of the valve seat 300 and is in communication with a plurality of first flow channels 310 at the same time. The cross section of the first flow channel 310 is circular or waisted. Further, the valve seat 300 is in guide fit with the stud 420 through the central through hole, and a sealing element 800 is clamped between the through hole and the stud 420 for sealing, and the sealing element 800 adopts a radial O-shaped sealing ring. After the valve seat 300 and the guide part 414 of the valve cover 410 are attached, an integral body is formed through a self-locking nut, which is convenient to connect and can ensure that the valve seat 300 and the valve cover 410 will not be separated during disassembly and maintenance. Preferably, the valve seat 300 adopts the entire plane as a sealing surface, which is convenient for processing and can effectively improve the machining precision of the sealing surface, thereby improving the sealing effect of the one-way valve.

[0079] The valve seat 300 is provided with a first flow channel 310 in the shape of a tapered hole or a tapered waist hole, and is connected to a ring groove near the lower sealing end face of the valve seat 300, thereby effectively reducing the flow resistance. The first flow channel 310 in the shape of a tapered waist hole effectively increases the flow area, thereby further reducing the flow resistance of the one-way valve.

[0080] In the optional scheme of the utility model embodiment, referring to Figure 4 The valve seat 300 comprises a valve seat body 320, a first limiting disc 330 and a second limiting disc 340, and the first limiting disc 330 and the second limiting disc 340 are respectively located at two ends of the valve seat body 320; the first limiting disc 330 extends into the upper end cover 100, and a sealing element 800 is clamped between the first limiting disc 330 and the upper end cover 100; the second limiting disc 340 extends into the lower end cover 200, and a sealing element 800 is clamped between the second limiting disc 340 and the lower end cover 200; a sealing element 800 is clamped between the upper surface of the valve seat body 320 and the upper end cover 100, and a sealing element 800 is clamped between the lower surface of the valve seat body 320 and the lower end cover 200.

[0081] Specifically, the first limiting disc 330 and the upper end cover 100 are clamped with a sealing element 800, and the upper surface of the valve seat body 320 and the upper end cover 100 are clamped with a sealing element 800, thereby realizing double sealing of the valve seat 300 and the upper end cover 100. Similarly, the second limiting disc 340 and the lower end cover 200 are clamped with a sealing element 800, and the lower surface of the valve seat body 320 and the lower end cover 200 are clamped with a sealing element 800, thereby realizing double sealing of the valve seat 300 and the lower end cover 200.

[0082] The upper end and the lower end of the valve seat 300 are respectively the first limiting disc 330 and the second limiting disc 340, which are used to be clamped and installed with the upper end cover 100 and the lower end cover 200, thereby enhancing the strength of the valve seat 300, effectively avoiding stress on working parts, including the valve seat 300, the valve cover 410 and the annular valve plate 500, when the upper end cover 100 or the lower end cover 200 is installed or connected with a pipeline, thereby prolonging the service life of the one-way valve, and providing more space for sealing of the valve seat 300.

[0083] In the optional scheme provided by the utility model embodiment, the upper end cover 100, the lower end cover 200, the valve cover 410 and the valve seat 300 are made of the same material.

[0084] The upper end cover 100 and the lower end cover 200 are made of the same material as the valve cover 410, are clamped with the valve seat 300, adopt a radial and axial combined sealing mode, and ensure no leakage. The sealing with external parts, such as a pipeline flange, adopts a stainless steel winding gasket, and sealing is realized by plastic deformation of the winding gasket and the contact surface. Further, the upper end cover 100 and the lower end cover 200 and the external interface can be in a plane sealing form, an NPT or CT interface sealing form.

[0085] The advantages of the annular valve plate exhaust one-way valve are described in detail as follows:

[0086] (1) It can be applied to volumetric compressors with high pressure of 20-90 MPa and high frequency operation, and also to hydrogen environment.

[0087] (2) The annular valve plate exhaust one-way valve has simple overall structure, and is convenient to process and maintain.

[0088] (3) It has small stroke and high response, and has no noise or abnormal sound under high frequency operation.

[0089] (4) It has large flow capacity, can be applied to large displacement compressor models, and has small flow resistance loss.

[0090] (5) It has good forward and reverse sealing performance, stable performance, and long service life.

[0091] Example Two

[0092] Compared with Example One, referring to Figure 5 , the annular valve plate exhaust one-way valve provided in the embodiment is integrally formed with the valve cover 410 and the stud 420.

[0093] The valve cover 410 and the stud 420 are integrated, so that after the valve cover assembly 400 and the valve seat 300 are assembled, the coaxial precision is improved, and then the sealing ring surface of the valve seat 300 is more symmetrical relative to the annular valve plate 500, and then the sealing effect is improved.

[0094] It should be noted that the features in the embodiments in the present application can be combined with each other without conflict.

[0095] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ring-shaped valve disc exhaust one-way valve, characterized by, The utility model relates to a valve, which comprises an upper end cover (100), a lower end cover (200), a valve seat (300), a valve cover assembly (400), an annular valve plate (500), a locking piece (600) and an elastic piece (700). One end of the valve seat (300) is mounted on the upper end cover (100), the other end is mounted on the lower end cover (200), and a sealing piece (800) is clamped between the valve seat (300) and the upper end cover (100) and the lower end cover (200). The valve cover assembly (400) comprises a valve cover (410) and a stud (420), the valve cover (410) is located in the lower end cover (200), there is a gap between the inner wall of the lower end cover (200) and the outer wall of the valve cover (410), one end of the stud (420) is connected with the valve cover (410), and the other end penetrates through the valve seat (300) and is connected with the locking piece (600). The valve seat (300) is provided with a first flow channel (310) extending along the axial direction of the valve seat (300), the annular valve plate (500) is located between the valve seat (300) and the valve cover (410), and the position of the annular valve plate (500) corresponds to that of the first flow channel (310), one end of the elastic piece (700) is mounted on the valve cover (410), and the other end is connected with the annular valve plate (500). The valve cover (410) is provided with a second flow channel (411) extending along the axial direction of the valve cover (410), and the second flow channel (411) is located between the elastic piece (700) and the stud (420). The end surface of the annular valve plate (500) close to the valve seat (300) is a plane.

2. The ring valve skirt exhaust one-way valve of claim 1, wherein, The end surface of the annular valve plate (500) close to the valve seat (300) is connected to the inner wall through a first round corner, and the end surface of the annular valve plate (500) close to the valve seat (300) is connected to the outer wall through a second round corner.

3. The ring valve skirt exhaust one-way valve of claim 2, wherein, The end surface of the annular valve plate (500) close to the valve seat (300) is a conical surface or a spherical surface.

4. The ring valve skirt exhaust one-way valve of claim 1, wherein, The surface of the valve cover (410) close to the valve seat (300) is provided with a conical mounting hole (412), the cross-sectional size of the conical mounting hole (412) gradually decreases from one end close to the valve seat (300) to the other end away from the valve seat (300), and the elastic piece (700) is mounted in the conical mounting hole (412).

5. The ring valve skirt exhaust one-way valve of claim 1, wherein, The bottom wall of the conical mounting hole (412) is provided with a flow guide through hole (413).

6. The ring valve skirt exhaust one-way valve of claim 5, wherein, The surface of the valve cover (410) close to the valve seat (300) is provided with a guide part (414), and the side wall of the guide part (414) is provided with a plurality of grooves (415) arranged at intervals along the circumferential direction of the valve cover (410).

7. The ring valve skirt one-way exhaust valve of claim 1, wherein, The top surface of the guide part (414) abuts against the valve seat (300), and the annular valve plate (500) is sleeved on the guide part (414) and gap-fitted with the guide part (414). ​ 8. The ring valve skirt one-way exhaust valve of claim 1, wherein, The valve seat (300) is provided with an annular groove (350) near the surface of the valve cover (410), and the annular groove (350) communicates with the first flow channel (310); The cross-sectional size of the first flow channel (310) gradually decreases from the end away from the valve cover (410) to the end close to the valve cover (410).

9. The ring valve skirt exhaust one-way valve of claim 1, wherein, The valve seat (300) comprises a valve seat body (320), a first limiting disc (330) and a second limiting disc (340), and the first limiting disc (330) and the second limiting disc (340) are respectively located at two ends of the valve seat body (320); The first limiting disc (330) extends into the upper end cover (100), and a sealing element (800) is clamped between the first limiting disc (330) and the upper end cover (100); the second limiting disc (340) extends into the lower end cover (200), and a sealing element (800) is clamped between the second limiting disc (340) and the lower end cover (200); The upper surface of the valve seat body (320) and the upper end cover (100) are clamped with a sealing element (800), and the lower surface and the lower end cover (200) are clamped with a sealing element (800).

10. The ring valve skirt exhaust one-way valve of claim 1, wherein, The valve cover (410) is threadedly connected with the stud (420); or, the valve cover (410) is integrally formed with the stud (420).

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