CN220727214U - Check valve and manifold system - Google Patents

Abstract

The application relates to a one-way valve and manifold system, the one-way valve includes valve body and valve seat, the valve body is along the axial direction of the one-way valve, there is fluid channel penetrating the valve body; the valve seat is arranged in the fluid channel and is detachably connected with the valve body; wherein, along the extending direction of the fluid channel, the one-way valve is provided with an outlet side and an inlet side, and the valve seat is close to the inlet side and is coaxially arranged with the fluid channel; the one-way valve further comprises a first sealing element and a second sealing element, wherein the first sealing element and the second sealing element are respectively arranged at two sides of the valve seat along the axial direction of the one-way valve and sleeved on the radial outer side wall of the valve seat; wherein the first seal and the second seal are used for sealing a gap between the valve seat and the valve body. The check valve fills the gap between the valve body and the valve seat through the first sealing element and the second sealing element, so that the sealing effect between the valve body and the valve seat is realized, the fluid medium is prevented from flowing into the gap between the valve seat and the valve body, sand accumulation is effectively prevented, and the valve seat is ensured to be normally detached.

Description

Check valve and manifold system

Technical Field

The application relates to the technical field of valves, in particular to a one-way valve and manifold system.

Background

A one-way valve, also known as a check valve or a non-return valve, is a valve that allows only one-way flow of fluid, etc., without back flow. The device mainly can avoid the reverse flow of fluid, the overhigh pressure in the system, the oil way division, the execution mechanism formation by matching with the throttle valve, the reaction and the like.

The valve assembly in the related art has a valve body; a valve seat connected to the valve body; a hanger extending within the valve body proximate the valve seat; a flap pivotally connected to the hanger and actuatable between an open configuration and a closed configuration; and a valve cover connected to the valve body to secure the hanger in place relative to the valve seat.

However, the sealing treatment is not performed between the valve seat and the end face of the valve body, so that fluid medium easily flows into a gap between the valve seat and the valve body, and the valve seat is difficult to detach.

Disclosure of Invention

An object of the present application is to provide a check valve and manifold system that can promote sealing performance between valve seat and valve body.

To this end, in a first aspect, embodiments of the present application provide a check valve, where the check valve includes a valve body and a valve seat, and the valve body is provided with a fluid channel penetrating the valve body along an axial direction of the check valve;

the valve seat is arranged in the fluid channel and is detachably connected with the valve body; wherein, along the extending direction of the fluid channel, the one-way valve is provided with an outlet side and an inlet side, and the valve seat is close to the inlet side and is coaxially arranged with the fluid channel;

the one-way valve further comprises a first sealing element and a second sealing element, wherein the first sealing element and the second sealing element are respectively arranged on two sides of the valve seat along the axial direction of the one-way valve and sleeved on the radial outer side wall of the valve seat;

wherein the first seal and the second seal are configured to seal a gap between the valve seat and the valve body.

In one possible implementation, the radially outer side wall of the valve seat is provided with a first annular groove and a second annular groove;

the first sealing element is arranged in the first annular groove, and the outer diameter size of the first sealing element is larger than the depth of the first annular groove;

the second sealing piece is arranged in the second annular groove, and the outer diameter size of the second sealing piece is larger than the depth of the second annular groove.

In one possible implementation, the axial surface of the valve seat on the outlet side is provided with at least one positioning portion for mounting in alignment with the valve body.

In one possible implementation, the valve further comprises a flow baffle rotatably mounted to the valve body;

the flow baffle plate can rotate relative to the valve seat, so that the flow baffle plate can be buckled to the valve seat to seal the fluid channel; or,

the baffle is capable of moving away from the valve seat to open the fluid passage.

In one possible implementation, the flow baffle includes a valve plate, a connecting shaft body, and a valve plate bracket;

one end of the valve plate is rotatably arranged on the valve plate bracket through the connecting shaft body, and the other end of the valve plate can move relative to the valve seat so as to be close to or far away from the valve seat;

the valve plate support is mounted on the valve body.

In one possible implementation manner, the valve plate comprises a valve plate main body and a connecting lifting lug, wherein the connecting lifting lug is formed by bending one end of the valve plate main body relative to the valve plate main body; the connecting shaft body is rotatably arranged on the connecting lifting lug;

the valve plate support is annular, and the radial inner side wall of the valve plate support is provided with a mounting groove matched with the connecting lifting lug.

In one possible implementation, the valve plate body includes a base skeleton and a protective layer;

the surface of basic skeleton is provided with a plurality of third annular grooves, the protective layer with a plurality of third annular grooves cooperation is installed in the surface of basic skeleton.

In one possible implementation, the base skeleton is provided with at least one limit portion, which abuts against the valve seat when the flow blocking plate blocks the fluid passage.

In one possible implementation, the valve body is provided with a service channel in its radial direction, the service channel being in communication with the fluid channel;

wherein, the valve plate support joint in the maintenance passageway.

In one possible implementation, a surface of the valve plate holder, which is far from the outside of the check valve, is provided with a slope in the axial direction of the service passage.

In one possible implementation, the valve further comprises a valve cover mounted on the overhaul channel, and the valve cover is detachably connected with the valve body;

wherein, the valve gap with the sealed setting between the maintenance passageway.

To this end, in a second aspect, embodiments of the present application provide a manifold system comprising a one-way valve as described in the first aspect.

According to the check valve and the manifold system provided by the embodiment of the application, the check valve fills the gap between the valve body and the valve seat through the first sealing element and the second sealing element, so that the sealing effect between the valve body and the valve seat is realized, the gap between the valve seat and the valve body is avoided when a fluid medium flows into, sand accumulation is effectively prevented, and the valve seat is ensured to be normally detached.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief description will be given below of the drawings that are needed in the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. In addition, in the drawings, like parts are designated with like reference numerals and the drawings are not drawn to actual scale.

Fig. 1 shows a schematic structural diagram of a check valve according to an embodiment of the present application;

FIG. 2 shows a schematic structural view of a valve seat of the check valve shown in FIG. 1;

FIG. 3 shows a schematic structural view of a valve seat of the check valve shown in FIG. 1;

FIG. 4 shows a schematic view of the structure of the baffle of the check valve shown in FIG. 1;

FIG. 5 shows a schematic view of the structure of the baffle of the check valve shown in FIG. 1;

FIG. 6 shows a schematic structural view of a valve plate of the check valve shown in FIG. 1;

fig. 7 shows a partially enlarged schematic view of the valve plate C of the check valve shown in fig. 5.

Reference numerals illustrate:

1. a valve body; 11. a fluid channel; 111. a first step; 112. a second step; 12. a service passage;

2. a valve seat; 21. a first valve seat body; 22. a second valve seat body; 23. a first annular groove; 24. a second annular groove; 25. a positioning part;

3. a first seal; 4. a second seal;

5. a flow baffle; 51. a valve plate; 511. penetrating through the shaft hole; 512. a valve plate main body; 5121. a base skeleton; 51211. a third annular groove; 51212. a limit part; 5122. a protective layer; 513. the connecting lifting lug; 52. a connecting shaft body; 53. a valve plate support; 531. a pin hole; 532. a mounting groove; 533. a planar structure; 534. an inclined plane;

6. a valve cover; 61. a seal ring; 62. a flange; 63. an O-ring;

7. a suspension ring screw; 8. a first thread protector; 81. a union sealing ring; 9. wing nuts; 91. a sector retainer ring; 92. a circlip; 10. and a second wire guard.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

Fig. 1 shows a schematic structural diagram of a check valve according to an embodiment of the present application; FIG. 2 shows a schematic structural view of a valve seat of the check valve shown in FIG. 1; FIG. 3 shows a schematic structural view of a valve seat of the check valve shown in FIG. 1; FIG. 4 shows a schematic view of the structure of the baffle of the check valve shown in FIG. 1; FIG. 5 shows a schematic view of the structure of the baffle of the check valve shown in FIG. 1; FIG. 6 shows a schematic structural view of a valve plate of the check valve shown in FIG. 1; fig. 6 shows a partially enlarged schematic view of the valve plate C of the check valve shown in fig. 5.

In some exemplary embodiments, as shown in fig. 1-4, embodiments of the present application provide a one-way valve for use in a manifold system to communicate with a conduit in the manifold system to deliver a liquid or gas. Wherein, the check valve can only carry in one direction, avoid appearing countercurrent etc..

The check valve includes a valve body 1 and a valve seat 2, and the valve body 1 is provided with a fluid passage 11 penetrating the valve body 1 along an axial direction of the check valve (refer to an X axis shown in fig. 1) for flowing a fluid medium. Wherein the valve body 1 is for example tubular for easy fitting connection with other pipes.

The valve seat 2 is disposed in the fluid passage 11 and is detachably connected to the valve body 1. The valve seat 2 and the valve body 1 can be in a buckle connection for convenient disassembly, or the valve seat 2 and the valve body 1 can be in threaded connection, so that the valve seat 2 and the valve body 1 are connected more reliably, and separation under flushing of a fluid medium is avoided.

Wherein the one-way valve has an outlet side a and an inlet side B along the extending direction of the fluid passage 11 (refer to X-axis shown in fig. 1), and the valve seat 2 is disposed adjacent to the inlet side a and coaxially with the fluid passage 11.

In some examples, the valve seat 2 has a cylindrical structure, and has a first valve seat body 21 and a second valve seat body 22, where the inner diameter of the first valve seat body 21 is the same as the inner diameter of the second valve seat body 22, so as to ensure the circulation of the fluid medium, and the fluid medium can normally pass through and cannot stay. The outer diameter of the first valve seat body 21 is smaller than the outer diameter of the second valve seat body 22 so that the valve seat 2 can be embedded in the valve body 1.

Illustratively, the fluid passage 11 is provided with stepped recesses, such as a first step 111 and a second step 112, and in the installed state, the first valve seat body 21 corresponds to the first step 111, and the second valve seat body 22 corresponds to the second step 112, forming a limit for the valve seat 2. When the valve seat 2 is screwed to the valve body 1, the phenomenon of tripping does not occur, and the valve seat 2 can be installed in an aligned manner.

The check valve further comprises a first sealing element 3 and a second sealing element 4, wherein the first sealing element 3 and the second sealing element 4 are respectively arranged on two sides of the valve seat 2 along the axial direction of the check valve and sleeved on the radial outer side wall of the valve seat 2. The first sealing element 3 and the second sealing element 4 are used for blocking a gap between the valve seat 2 and the valve body 1, so that gap sealing between the valve seat 2 and the valve body 1 during reverse closure is realized, and sand accumulation is effectively prevented.

In the use, the impurity such as easy doping solid particle in the fluid medium, its diameter is less, easily gets into the clearance between disk seat 2 and the valve body 1, and first sealing member 3 and second sealing member 4 can prevent that it from getting into in the clearance between disk seat 2 and the valve body 1 at both ends, and prevents to appear the snap-in phenomenon when threaded connection, guarantees that disk seat 2 can normal dismouting.

In some examples, the radially outer side wall of the valve seat 2 is provided with a first annular groove 23 and a second annular groove 24. The first sealing element 3 is arranged in the first annular groove 23, the outer diameter of the first sealing element 3 is larger than the depth of the first annular groove 23, so that the surface of the first sealing element 3 can protrude out of the edge of the first annular groove 23, and when the valve seat 2 is connected with the valve body 1, the first sealing element 3 can be abutted against the valve body 1 or extruded by the valve body 1, and the sealing effect is realized.

The second sealing member 4 is disposed in the second annular groove 24, and the outer diameter of the second sealing member 4 is greater than the depth of the second annular groove 24, and the manner and implementation purposes of the second sealing member 4 are the same as those of the first sealing member 3, and the detailed description thereof will not be repeated.

Wherein the first annular groove 23 may be disposed on, but not limited to, the first valve seat body 21, and the second annular groove 24 may be disposed on, but not limited to, the second valve seat body 22.

Wherein the axial surface of the valve seat 2, at the outlet side B, is provided with at least one positioning portion 25. The positioning portion 25 is in a groove shape and is used as a dismounting hole, and the positioning portion 25 is used for being installed in alignment with the valve body 1, so that a tool can be conveniently and quickly installed. And is provided on the outlet side B, the mounting position can be prevented from being washed out.

Here, the positioning portion 25 may be one or a plurality of positioning portions, and the plurality of positioning portions may be uniformly distributed along the circumferential direction thereof, so as to further enhance the positioning effect, in particular, in terms of practical situations.

In some exemplary embodiments, as shown in fig. 1 and 4-7, the check valve further includes a baffle 5, where the baffle 5 is rotatably mounted to the valve body 1. Wherein the flow baffle 5 is rotatable relative to the valve seat 2.

When the baffle plate 5 rotates relative to the valve seat 2, the baffle plate 5 can be buckled to the valve seat 2 to block the fluid channel 11, so as to prevent the fluid medium from flowing reversely. Or when the flow baffle plate 5 rotates relative to the valve seat 2, the flow baffle plate 5 can be separated from the valve seat 2 to open the fluid channel 11, so that the smoothness of the fluid channel is ensured, and the fluid medium can normally flow.

In some examples, baffle 5 includes a valve plate 51, a connecting shaft 52, and a valve plate bracket 53. One end of the valve plate 51 is rotatably mounted on the valve plate support 53 through the connecting shaft body 52, and the other end of the valve plate 51 can move relative to the valve seat 2 so as to be close to or far away from the valve seat 2, thereby realizing blocking or opening.

The valve plate support 53 is provided with a pin hole 531, the corresponding position of the valve plate 51 is provided with a through shaft hole 511, the connecting shaft body 52 is rotatably installed in the through shaft hole 511, and two ends of the connecting shaft body extend out of the through shaft hole 511 and are inserted into the pin hole 531. The pin holes 531 are bar-shaped to provide horizontal movement activity to the valve plate 51 while avoiding excessive thickness of the valve plate holder 53.

The two ends of the connecting shaft body 52 are sleeved with protective sleeves, namely, the connecting positions of the connecting shaft body 52 and the valve plate support 53 are provided with nonmetallic wear-resistant sleeves, so that the abrasion of the connecting shaft body 52 and the valve plate support 53 can be reduced, the corrosion resistance is improved, and the service life is effectively prolonged.

The valve plate support 53 provides rotational support for the connecting shaft body 52, and the valve plate support 53 is mounted on the valve body 1 to achieve assembly. Wherein, valve plate 51, connecting axle body 52, valve plate support 53 are clearance fit, through controlling the size, can guarantee after the free fall of valve plate 51 and valve seat 2 mating surface laminating.

In the present embodiment, as shown in fig. 1, 4 to 7, valve plate 51 includes a valve plate main body 512 and a connecting lug 513, and connecting lug 513 is formed by bending one end of valve plate main body 512 with respect to valve plate main body 512. Wherein the connection shaft body 52 is rotatably mounted to the connection lug 513.

Under the installed state, the connection lug 513 is bent towards the valve seat 2 side, and the connection lug 513 is bent towards one side and protrudes out of the valve plate main body 512, so that the off-axis design of the connection shaft body 52 is realized, and when the valve plate 51 is in a free state, the attachment of the valve plate 51 and the valve seat 2 is more compact, so that the initial sealing of the fluid channel 11 is established.

The valve plate support 53 is annular, and when the valve plate 51 rotates relative to the valve seat 2 to open the fluid passage 11, the valve plate 51 can be changed from vertical suspension to horizontal placement, and the valve plate main body 512 of the valve plate 51 is attached to the valve plate support 53. Wherein the valve plate 51 has a circular shape so as to be fitted with the valve plate holder 53.

The radial inner side wall of the valve plate support 53 is provided with the mounting groove 532 matched with the connecting lifting lug 513, so that when the valve plate 51 rotates freely, the erosion is reduced and the stability of the valve plate 51 is maintained when a high-pressure fluid medium enters the space above the valve plate 51.

In the present embodiment, as shown in fig. 1, 4 to 7, the valve plate main body 512 includes a base skeleton 5121 and a protective layer 5122. The basic skeleton 5121 is, for example, a metal skeleton, and improves the strength of the valve plate main body 512, and the protective layer 5122 is, for example, a nonmetallic vulcanized layer, improves the corrosion resistance and strength of the valve plate main body 512, and prolongs the service life of the valve plate main body 512.

The surface of basic skeleton 5121 is provided with a plurality of third annular grooves 51211, and protective layer 5122 cooperates with a plurality of third annular grooves 51211, installs in the surface of basic skeleton 5121, has increased basic skeleton 5121 and nonmetallic structure layer's cohesion, has prolonged the life of valve plate 51.

The base skeleton 5121 is provided with at least one limiting portion 51212, and the limiting portion 51212 is of a protruding structure and protrudes out of the surface of the base skeleton 5121. When the baffle plate 5 seals the fluid channel 11, the limiting part 51212 can provide supporting force when being abutted to the valve seat 2, so that the nonmetallic vulcanized layer is prevented from being excessively extruded under the condition of ensuring the sealing, and the damage of the nonmetallic vulcanized layer is avoided.

In some exemplary embodiments, as shown in fig. 1, the valve body 1 is provided with a service passage 12 in its radial direction, the service passage 12 communicates with the fluid passage 11, and the service passage 12 also communicates with the outside of the check valve, so as to facilitate servicing of the valve plate 51 and the like. Wherein, valve plate support 53 joint is in the maintenance passageway 12.

In one example, the inner side wall of the service channel 12 is stepped, and the valve plate support 53 is placed at the stepped position to support the valve plate support 53, so that assembly and limiting are achieved.

Wherein the surface of the valve plate holder 53 that cooperates with the service channel 12 is at least partially planar 533. For ease of explanation and understanding, reference is made to fig. 1 for exemplary illustration in the orientation of the illustration, i.e., the lower region of the valve plate holder 53 is straight-sided. After being matched with the overhaul channel 12, the rotation can be effectively prevented, and the positioning function is realized.

Along the axial direction of the service passage (refer to the Z axis shown in fig. 1), the surface of the valve plate support 53, which is far from the outside of the check valve, is provided with a slope 534, forming a large bevel shape. When the valve plate 51 is in the open position, that is, the valve plate 51 is horizontally placed and attached to the lower area of the valve plate support 53, the inclined surface 534 of the valve plate 51 can effectively avoid damage to the protective layer 5122 of the valve plate 51 due to smaller contact area of the valve plate 51, the matching part of the valve plate support 53 and the valve plate 51 is prolonged, the contact area is increased, and abrasion of the matching position is reduced.

In some exemplary embodiments, as shown in fig. 1, the check valve further includes a valve cover 6 mounted to the service passage 12, and the valve cover 6 is used to block the service passage 12, thereby realizing an upper cover plate structure of the check valve.

The valve cover 6 is detachably connected with the valve body 1, such as interference insertion, so that the installation is simple and quick; or, can also threaded connection for the valve gap 6 is more reliable with the connection of valve body 1, avoids its pine to take off, can also avoid wearing and tearing problem when pegging graft. The external threads of the valve cover 6 are specially treated, so that the resistance of screwing of the threads is reduced, and the quick assembly and disassembly are facilitated. And the connection position of the overhaul channel 12 and the valve cover 6 can also be set to be in a step shape so as to support and limit the valve cover 6 and prevent the threads from tripping, and the valve cover 6 falls into the fluid channel 11.

The valve cover 6 and the overhauling channel 12 are arranged in a sealing way, so that the fluid medium is prevented from flowing out of the one-way valve or external impurities enter the one-way valve. Wherein, the lower terminal surface of valve gap 6 and the up end laminating of valve plate support 53 set up, can realize sealing connection through sealing washer 61 between valve gap 6 and the valve plate support 53, form the seal of interference realization valve gap 6 and valve plate 51 through the extrusion.

The side of the valve cover 6 remote from the valve plate holder 53 is provided with a flange 62 on its circumferential outer side wall, the flange 62 of which can be brought into abutment with the outer surface of the valve body 1. Wherein a sealing connection between the flange 62 and the valve body 1 can be achieved by means of an O-ring 63. And both sides of the valve cover 6 are subjected to sealing treatment, so that the sealing effect is effectively improved.

In this embodiment, as shown in fig. 1, the check valve further includes a lifting screw 7 disposed on the valve cover 6, where the lifting screw 7 is screwed on the valve cover 6, so as to facilitate disassembly and replacement, and integral lifting of the upper cover plate type check valve is achieved through the lifting screw 7.

In some exemplary embodiments, as shown in fig. 1, the one-way valve further comprises a first bead 8 provided at the inlet side a, the first bead 8 being in sealing connection with the valve body 1.

The first thread protector 8 covers the end of the inlet side A of the valve body 1 and is used for protecting the one-way valve from being washed or damaged, and meanwhile, the surface of the one-way valve can be prevented from being impacted or corroded by external force. The first thread protector 8 is for example made of a rigid pipe protection material, such as steel pipe or plastic pipe.

Wherein, the fluid channel 11 is provided with a sealing groove at the inlet side A, and a union sealing ring 81 is embedded in the sealing groove to realize the sealing effect of the inlet side A.

In this embodiment, as shown in fig. 1, the one-way valve further comprises a wing nut 9 provided at the outlet side B and a second thread protector 10. The material and function of the second wire protector 10 are the same as those of the first wire protector 8, and the detailed description thereof will not be repeated.

The second thread protector 10 is arranged on the wing nut 9, and the wing nut 9 is in sealing connection with the valve body 1. The wing nut 9 is sleeved at the end part of the valve body 1, a gap is reserved between the wing nut 9 and the valve body 1, and the wing nut 9 and the valve body 1 can be sealed through the fan-shaped retainer ring 91. And the wing nut 9 and the valve body 1 can be further provided with a circlip 92 which can be extruded to further improve the sealing effect.

Here, the first wire protector 8 and the second wire protector 10 may be connected by union seal rings, or may be connected to the valve body 1 by a clip type connection, in particular, in terms of practical situations.

The present disclosure also contemplates a manifold system including a one-way valve as in any of the embodiments described above. When overhauling the check valve, can dismantle parts such as valve plate through the maintenance passageway and change, need not dismantle it from the pipeline, realized online maintenance, the dismouting is high-efficient, has realized quick replacement wearing parts, promotes maintenance efficiency.

The valve seat of the one-way valve is in threaded connection with the valve body, so that the one-way valve is convenient to replace. And the valve seat and the inner side wall of the fluid channel are subjected to sealing treatment, so that leakage and sand accumulation in gaps are effectively avoided, and thread snap-in phenomenon is avoided.

The valve plate of the one-way valve is provided with the connecting lifting lug, which is favorable for tightly attaching the valve plate and the valve seat and is favorable for establishing initial sealing. Meanwhile, the leakage of the fluid medium to the upper part can be reduced, and the scouring is effectively reduced.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).

Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (12)

1. The one-way valve is characterized by comprising a valve body and a valve seat, wherein the valve body is provided with a fluid channel penetrating through the valve body along the axial direction of the one-way valve;

the valve seat is arranged in the fluid channel and is detachably connected with the valve body; wherein, along the extending direction of the fluid channel, the one-way valve is provided with an outlet side and an inlet side, and the valve seat is close to the inlet side and is coaxially arranged with the fluid channel;

the one-way valve further comprises a first sealing element and a second sealing element, wherein the first sealing element and the second sealing element are respectively arranged on two sides of the valve seat along the axial direction of the one-way valve and sleeved on the radial outer side wall of the valve seat;

wherein the first seal and the second seal are configured to seal a gap between the valve seat and the valve body.

2. The one-way valve of claim 1, wherein a radially outer sidewall of the valve seat is provided with a first annular groove and a second annular groove;

the first sealing element is arranged in the first annular groove, and the outer diameter size of the first sealing element is larger than the depth of the first annular groove;

the second sealing piece is arranged in the second annular groove, and the outer diameter size of the second sealing piece is larger than the depth of the second annular groove.

3. A one-way valve according to claim 1, wherein an axial surface of the valve seat on the outlet side is provided with at least one positioning portion for fitting in alignment with the valve body.

4. The one-way valve of claim 1, further comprising a baffle rotatably mounted to the valve body;

the flow baffle plate can rotate relative to the valve seat, so that the flow baffle plate can be buckled to the valve seat to seal the fluid channel; or,

the baffle is capable of moving away from the valve seat to open the fluid passage.

5. The one-way valve of claim 4, wherein the baffle comprises a valve plate, a connecting shaft, and a valve plate bracket;

one end of the valve plate is rotatably arranged on the valve plate bracket through the connecting shaft body, and the other end of the valve plate can move relative to the valve seat so as to be close to or far away from the valve seat;

the valve plate support is mounted on the valve body.

6. The one-way valve according to claim 5, wherein the valve plate includes a valve plate body and a connecting lug formed by bending one end of the valve plate body with respect to the valve plate body; the connecting shaft body is rotatably arranged on the connecting lifting lug;

the valve plate support is annular, and the radial inner side wall of the valve plate support is provided with a mounting groove matched with the connecting lifting lug.

7. The one-way valve of claim 6, wherein the valve plate body comprises a base skeleton and a protective layer;

the surface of basic skeleton is provided with a plurality of third annular grooves, the protective layer with a plurality of third annular grooves cooperation is installed in the surface of basic skeleton.

8. The one-way valve of claim 7, wherein the base skeleton is provided with at least one stopper portion that abuts the valve seat when the flow blocking plate blocks the fluid passage.

9. The one-way valve of claim 5, wherein the valve body is provided with a service passage in a radial direction thereof, the service passage being in communication with the fluid passage;

wherein, the valve plate support joint in the maintenance passageway.

10. The one-way valve according to claim 9, wherein a surface of the valve plate holder, which is away from an outer side of the one-way valve, is provided with a slope in an axial direction of the service passage.

11. The one-way valve of claim 10, further comprising a valve cover mounted to the service passage, the valve cover being removably coupled to the valve body;

wherein, the valve gap with the sealed setting between the maintenance passageway.

12. A manifold system comprising the one-way valve of any one of claims 1-11.