CN114562567B

CN114562567B - Valve device

Info

Publication number: CN114562567B
Application number: CN202210260328.1A
Authority: CN
Inventors: 王渊渊; 杨孔雳; 王明政; 谷继品; 刘艳; 蒋恩; 张寅然
Original assignee: China Institute of Atomic of Energy
Current assignee: China Institute of Atomic of Energy
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2023-03-21
Anticipated expiration: 2042-03-16
Also published as: CN114562567A

Abstract

There is provided a valve device comprising: a valve body having an operation through hole, an input through hole, and at least one output through hole; a driving part extending into the operation through hole; a valve rod which is driven by the driving part to move linearly relative to the input through hole so as to allow the communication between the input through hole and the at least one output through hole or disconnect the communication between the input through hole and the at least one output through hole; and the elastic compression assembly and the support assembly are sleeved on the valve rod and positioned in the operation through hole, and the compression assembly and the support assembly are provided with concave-convex joint surfaces matched with each other, so that the compression assembly and the support assembly are in sealed radial elastic contact with the inner wall of the operation through hole and the outer diameter of the valve rod under the condition of linear movement of the valve rod. The valve device can prevent the conveyed medium from overflowing from a gap between the valve rod and the operation through hole, and improves the sealing performance of the valve device.

Description

Valve device

Technical Field

At least one embodiment of the present disclosure relates to a valve device, and more particularly, to a valve device that prevents leakage of a medium in a fluid state.

Background

When detecting a fluid medium such as gas or liquid in the sealed cavity, the medium needs to be led out from the sealed cavity by using a valve device to collect the medium so as to be further conveyed to a related detection device. In particular, when detecting a toxic and harmful medium (e.g., toxic gas) in the sealed cavity, it is necessary to change the boundary of the sealed cavity to collect the medium without leakage of the medium. And after the medium is collected, the collecting device is removed, and the original sealing state of the sealing cavity is recovered again. Since the medium in the sealed cavity may be harmful to the human body and has a certain pressure, the valve device is required to have good sealing performance during detection.

Disclosure of Invention

To address at least one of the above and other deficiencies in the prior art, embodiments of one aspect of the present disclosure provide a valve device that may prevent a conveyed medium from leaking to an external environment.

According to an embodiment of an aspect of the present invention, there is provided a valve device including:

a valve body having an operation through hole, an input through hole, and at least one output through hole;

a driving part extending into the operation through hole;

a valve rod which is driven by the driving part to move linearly relative to the input through hole so as to allow the input through hole to be communicated with the at least one output through hole or disconnect the input through hole from the at least one output through hole; and

elastic compression assembly and supporting component, the cover is located on above-mentioned valve rod and is fixed a position in above-mentioned operation through-hole, and above-mentioned compression assembly and above-mentioned supporting component have the unsmooth faying face of mutually supporting for above-mentioned compression assembly and above-mentioned supporting component radially elastic contact with the external diameter of above-mentioned operation through-hole inner wall and valve rod under the condition of above-mentioned valve rod rectilinear movement.

Drawings

Other objects and advantages of the present disclosure will become apparent from the following description of the disclosure, which is made with reference to the accompanying drawings, and can assist in a comprehensive understanding of the disclosure.

FIG. 1 is an axial cross-sectional schematic view of a valve arrangement according to an embodiment of the present disclosure;

FIG. 2 is an axial cross-sectional schematic view of a valve arrangement according to another embodiment of the present disclosure; and

fig. 3 is a schematic top view of a valve arrangement according to an embodiment of the present disclosure.

In the above figures, the reference numerals have the following meanings in detail:

100-a valve body;

110-a body portion;

111-an operational via;

112-output vias;

120-a mounting portion;

121-input via;

130-a first sealing ring;

140-a second seal ring;

150-a first mounting frame;

160-a second mounting frame;

170-sealing plate;

171-a base;

172-an insertion portion;

173-third sealing ring;

200-a drive section;

210-a screw plug;

220-screw rod;

221-a binding chamber;

222-a bonding hole;

230-a valve handle;

300-a valve stem;

310-a gasket;

400-a compression assembly;

410-a pressure ring;

420-a first baffle plate;

500-a support assembly;

510-a support ring;

520-a second baffle plate;

600-shell.

It is noted that, for the sake of clarity, in the drawings used to describe embodiments of the present disclosure, structures or regions may be enlarged or reduced in size, i.e., the drawings are not drawn to actual scale.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items.

In this document, unless specifically stated otherwise, directional terms such as "upper", "lower", "left", "right", "inside", "outside", and the like are used to indicate orientations or positional relationships based on the orientation shown in the drawings, merely for convenience in describing the present disclosure, and do not indicate or imply that the referenced device, element, or component must have a particular orientation, be constructed or operated in a particular orientation. It should be understood that when the absolute positions of the objects to be described are changed, the relative positional relationships they represent may also change accordingly. Accordingly, these directional terms should not be construed as limiting the present disclosure.

FIG. 1 is an axial cross-sectional schematic view of a valve arrangement according to an embodiment of the present disclosure.

According to an exemplary embodiment of the present disclosure, as shown in fig. 1, a valve apparatus may include a valve body 100, a driving part 200, a valve stem 300, an elastic compression assembly 400, and a support assembly 500.

The valve body 100 has an operation through hole 111, an input through hole 121, and at least one output through hole 112. The driving part 200 extends into the operation through hole 111. The valve stem 300 is linearly moved relative to the input through-hole 121 by the driving of the driving part 200 to allow or interrupt communication between the input through-hole 121 and the at least one output through-hole 112121 or communication between the input through-hole 121 and the at least one output through-hole 112.

The elastic compression assembly 400 and the support assembly 500 are sleeved on the valve rod 300 and positioned in the operation through hole 111, and the compression assembly 400 and the support assembly 500 have concave-convex joint surfaces matched with each other, so that the compression assembly 400 and the support assembly 500 are radially and elastically contacted with the inner wall of the operation through hole 111 and the outer diameter of the valve rod 300 under the condition that the valve rod 300 linearly moves, and the operation through hole 111 is sealed.

In an exemplary embodiment of the present disclosure, the valve body 100 serves as a carrier of a flow passage of a medium in a fluid state such as gas or liquid. In the case where the valve body 100 is a T-shaped three-way valve, the number of the operation through holes 111, the input through holes 121, and the output through holes 112 is one, wherein the sum of the number of the operation through holes 111, the input through holes 121, and the output through holes 112 is equal to N of the N-way valve device. In an alternative embodiment, the number of operation vias 111 and input vias 121 is one each, while the number of output vias 112 is 2 or 3.

In the embodiment of the present disclosure, in the case of using the valve device, a delivery pipe or a container of the medium is connected to the input through hole 121, wherein an end surface of the pipe or the container contacting the input through hole 121 may be provided with an O-ring to enhance sealing.

In the embodiment of the present disclosure, under the condition that the driving portion 200 is rotated, the driving portion 200 makes a linear movement, and at this time, the driving portion 200 can drive the valve rod 300 to make a linear movement, so that the compression assembly 400 and the support assembly 500 are extruded and deformed, the inner wall of the operation through hole 111 and the outer diameter of the valve rod 300 are radially elastically contacted, and the medium is prevented from leaking from the operation through hole 111.

In the embodiment of the present disclosure, the rotation of the driving part 200 linearly moves the valve rod 300 connected thereto, and the compressing assembly 400 and the supporting assembly 500 are deformed to elastically contact the inner wall of the operation through hole 111 and the outer diameter of the valve rod 300 in the radial direction, thereby preventing the medium in the valve device from overflowing from the gap between the valve rod 300 and the operation through hole 111 in the valve device and improving the sealing performance of the valve device.

FIG. 2 is an axial cross-sectional schematic view of a valve arrangement according to another embodiment of the present disclosure.

As shown in fig. 2, the compression assembly 400 includes a compression ring 410 and the support assembly 500 includes a support ring 510. At least one V-shaped groove is formed on one of the pressing ring 410 and the support ring 510, and at least one V-shaped protrusion, which is respectively fitted into the at least one V-shaped groove, is formed on the other of the pressing ring 410 and the support ring 510.

In the embodiment of the present disclosure, the operation through hole 111 includes a first sub hole, a second sub hole, and a third sub hole that are sequentially communicated from the outside to the inside and have an inner diameter that is sequentially reduced, stepped portions are formed at the combining portions of the first and second sub holes and the second and third sub holes, and the compression assembly 400 and the support assembly 500 are disposed in the second sub hole. The outer sides of the press ring 410 and the support ring 510 are respectively provided with a first blocking sheet 420 and a second blocking sheet 520, and the first blocking sheet 420 abuts against a step part formed by the combination part of the second branch hole and the third branch hole.

In an embodiment of the present disclosure, the pressing ring 410 and the support ring 510 may be a material having elasticity.

In the embodiment of the present disclosure, the valve rod 300 is driven to move upwards under the condition that the driving portion 200 rotates in the opposite direction, so that the pressing ring 410 and the support ring 510 between the pressing ring 410 and the support structure are elastically deformed, and thus the gap between the valve rod 300 and the operation through hole 111 is blocked, and further the medium is prevented from overflowing from the gap.

In the embodiment of the present disclosure, the valve rod 300 is driven to move downward when the driving part 200 rotates in the forward direction, so that the valve rod 300 can disconnect the communication between the input through hole 121 and the at least one output through hole 112, thereby achieving the switching between the disconnected communication state and the connected communication state of the valve device.

In the embodiment of the disclosure, in order to improve the air tightness between the pressing ring 410 and the support ring 510 after the pressing ring 410 and the support ring 510 are deformed, at least one V-shaped structure matched with each other may be respectively disposed on the surfaces of the pressing ring 410 and the support ring 510, so that the pressing ring 410 and the support ring 510 can better provide a good sealing effect for the valve device when the pressing ring and the support ring are deformed, and meanwhile, the processing requirement of the valve device is also reduced, and the cost is saved.

It should be noted that the cross-sectional shapes of the pressing ring 410 and the supporting ring 510 are not limited to V-shapes, and may be other shapes, such as wave-shaped, arc-shaped, etc.

In the embodiment of the present disclosure, an end of the valve stem 300 facing the input through hole 121 may be a piston, and the piston may be combined with the input through hole 121 to achieve the closing of the input through hole 121, wherein the piston may protrude from the third sub-hole.

In one embodiment of the present disclosure, as shown in fig. 2, the driving part 200 includes a screw plug 210 and a screw 220.

The screw plug 210 is screw-coupled into the first sub-hole of the operation through-hole 111, and an inner end of the screw plug 210 abuts against the second stopper 520 and a step formed by a coupling portion of the first sub-hole and the second sub-hole. The screw 220 is screw-coupled into the screw plug 210, and an inner side end of the screw 220 is coupled with the valve stem 300 to convert the rotation of the screw 220 into the linear movement of the valve stem 300.

In an embodiment of the present disclosure, the screw plug 210 may be a T-shaped hollow cylinder, and the outer surface of the lower cylinder is provided with an external thread for screwing with the first sub-hole. The first branch hole may be provided with a felt ring to prevent dust from entering an inner cavity of the valve device, wherein an outer side of an upper portion of the screw plug 210 may be processed into an outer hexagonal head to facilitate installation and clamping.

In the embodiment of the present disclosure, since the screw 220 is rotatable with respect to the plug 210, there is a gap between the screw 220 and the plug 210, which causes a medium leakage. In order to avoid leakage of the medium from the gap, a sealing ring may be arranged in an annular groove of the screw plug 210 at the first branch hole, further improving the sealing performance of the valve device.

In the valve device with the screw plug 210 installed therein, in the open state in which the valve device can allow the medium to flow from the input through hole 121 to the output through hole 112, the screw plug 210 may provide a certain support for the second flap 520 of the support assembly 500, so as to seal the gap between the screw plug 210 and the valve stem 300 during the deformation of the compressing assembly 400 and the support assembly 500, thereby improving the sealing performance of the valve device.

In the embodiment of the present disclosure, the inner end of the screw 220 forms a coupling chamber 221 and a coupling hole 222 communicating with the coupling chamber 221, and the first end of the valve rod 300 forms a coupling neck passing through the coupling hole 222 and a flange formed at a distal end of the coupling neck and protruding radially outward, the flange being received in the coupling chamber 221.

In an embodiment of the present disclosure, the combination of the combination chamber 221 and the combination hole 222 may be a groove having a substantially T-shaped cross-section, wherein one side of the T-shaped groove may have a through opening to facilitate the installation of the valve stem 300 in the combination chamber 221 or the removal of the valve stem 300 from the combination chamber 221.

In the embodiment of the present disclosure, in the case of rotating the screw 220, the screw 220 ascends or descends with respect to the screw plug 210 within a certain stroke. At this time, the valve rod 300 ascends or descends along with the screw plug 210 under the pulling or pushing action of the coupling chamber 221 and the coupling hole 222, so that the compression assembly 400 and the support assembly 500 on the valve rod 300 are elastically deformed, and the gap between the valve rod 300 and the operation through hole 111 is sealed.

As shown in fig. 2, the driving part 200 further includes a valve handle 230. The valve handle 230 is disposed at an outer end of the screw 220 extending out of the screw plug 210, and the valve handle 230 is used for rotating the screw 220.

In the disclosed embodiment, the valve handle 230 may be a round bar or rod, which is the power input of the valve device and facilitates the operation of the valve device by the operator. The operator rotates the valve handle 230 to drive the screw 220 to rotate together, so as to switch between the open state and the closed state.

In the embodiment of the present disclosure, after one end (upper end in fig. 2) of the screw 220 is inserted into a circular hole in the middle of the valve handle 230, a cylindrical pin may be used for rigid connection.

In the embodiment of the present disclosure, the input through hole 121 is axially aligned with the operation through hole 111, and the axial direction of the output through hole 112 is substantially perpendicular to the axial direction of the input through hole 121. In an alternative embodiment, the axial direction of the output through hole 112 has a predetermined acute angle with the axial direction of the input through hole 121.

In the embodiment of the present disclosure, in the reverse rotation of the operation driving part 200, since the input through hole 121 is axially aligned with the operation through hole 111112, the valve rod 300 is driven to linearly move in an upward direction such that the input through hole 121 communicates with the output through hole 112. Or the drive portion 200 may be rotated in the forward direction to interrupt the communication between the input through hole 121 and the output through hole 112.

In the embodiment of the present disclosure, the second end (lower end in fig. 2) of the valve rod 300 protrudes from the operation through hole 111 toward the inner end of the input through hole 121 to close or open the inner end of the input through hole 121, thereby allowing or breaking communication between the input through hole 121 and the at least one output through hole 112.

In the embodiment of the present disclosure, the second end of the valve rod 300 may be the above-mentioned piston, and the communication between the input through hole 121 and the at least one output through hole 112 is realized or the communication between the input through hole 121 and the at least one output through hole 112 is interrupted by the positional relationship between the piston and the input through hole 121.

As shown in fig. 2, a groove is formed on an end surface of the second end of the valve stem 300, and a packing 310 is provided in the groove.

In the embodiment of the present disclosure, in order to avoid the gap between the piston and the input through hole 121 to cause the medium to flow when the valve device is in the closed state, a sealing gasket 310 may be disposed on the piston gasket to ensure good sealing between the piston and the second through hole in the closed state. For example, a piston gasket may be disposed in a groove at the second end of the valve rod 300, the size of the gasket 310 being larger than the size of the input through-hole 121, the gasket 310 being used to improve the sealing between the piston and the input through-hole 121 in the closed state.

In the disclosed embodiment, the sealing pad 310 may be a solid disc, and the material of the sealing pad may be nitrile rubber, which is the most direct sealing partition in the valve device.

In an embodiment of the present disclosure, the valve body 100 includes a main body portion 110 and a mounting portion 120. An operation through hole 111 and an output through hole 112 are provided on the main body portion 110. A first end of the mounting portion 120 is detachably mounted to the body portion 110, a second end of the mounting portion 120 is coupled to the case 600 of the outer container, and the input through hole 121 axially penetrates the mounting portion 120.

In the embodiment of the present disclosure, a first sealing ring 130 is disposed at a coupling position of the mounting portion 120 and the main body portion 110.

In the embodiment of the present disclosure, the mounting portion 120 serves as an intermediate member for connection, which can connect the external container with the main body portion 110, and since the mounting portion 120 is detachably connected with the main body portion 110, there may be a gap for medium leakage between the two, so that a first sealing ring 130 may be provided at a position where the two are combined to enhance the sealing property at the connection position.

As shown in fig. 2, the second end of the mounting part 120 is inserted into a coupling through-hole formed at the sidewall of the container, and a second sealing ring 140 is provided at a position where the second end of the mounting part 120 is coupled to a coupling hole 222 of the container. The second end of the mounting part 120 and the coupling hole 222 of the container may be provided with stepped portions coupled to each other, and the second sealing ring 140 is provided on the stepped portions to improve sealing performance.

As shown in fig. 2, the valve device further includes a first mounting frame 150 mounted on the mounting part 120, and the valve device is mounted on the sidewall of the container by the first mounting frame 150.

In an embodiment of the present disclosure, in order to enhance the stability of the connection between the container and the valve device, the connection between the two may be performed by using the first mounting frame 150, for example, by a mounting plate provided with bolts. In the case where the valve device is installed in the case of the housing 600 of the sealed chamber, the valve device may be regarded as a part of the boundary of the sealed chamber. The valve device is used for collecting the gas medium in the sealed cavity, so that the gas medium can be detected by the related detection device, and the gas medium can be prevented from leaking in the process.

In an embodiment of the present disclosure, as shown in fig. 2 and 3, the valve apparatus further includes at least one second mounting frame 160 and a sealing plate 170. At least one second mounting frame 160 is respectively mounted at positions of the main body 110 at the output through holes 112. A sealing plate 170 is mounted on the second mounting frame 160, and the sealing plate 170 is sealed outside the output through-hole 112.

In the embodiment of the present disclosure, when the conveyance of the medium is not performed, the output through hole 112 may be blocked by the second mounting frame 160, and the medium is prevented from overflowing from the output through hole 112.

In an embodiment of the present disclosure, the sealing plate 170 includes a base 171, an insert 172, and a third sealing ring 173. The base 171 is mounted on the second mounting frame 160. The insertion portion 172 extends from the base portion 171 and is inserted into the output through hole 112. A third seal ring 173 is provided at an end of the insertion portion 172.

In the embodiment of the present disclosure, the insertion portion 172 is used to block the output through hole 112, and the third sealing ring 173 is used to improve the sealing performance between the insertion portion 172 and the output through hole 112, so that the medium can be effectively prevented from overflowing from the output through hole 112.

In the embodiment of the disclosure, the above parts are connected by bolts, so that the structure is simple, and the installation and the disassembly are convenient.

It will be appreciated by those skilled in the art that the embodiments described above are exemplary and can be modified by those skilled in the art, and that the structures described in the various embodiments can be freely combined without conflict in structure or principle.

Although a few embodiments of the present general inventive concept have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept, the scope of which is defined in the claims and their equivalents.

Claims

1. A valve device, comprising:

a driving part extending into the operation through hole;

a valve rod which is driven by the driving part to move linearly relative to the input through hole so as to allow or disconnect the communication between the input through hole and the at least one output through hole; and

the elastic compression component and the support component are sleeved on the valve rod and positioned in the operation through hole, and the compression component and the support component are provided with concave-convex joint surfaces matched with each other, so that the compression component and the support component are radially and elastically contacted with the inner wall of the operation through hole and the outer diameter of the valve rod under the condition that the valve rod linearly moves;

the operation through hole comprises a first branch hole, a second branch hole and a third branch hole which are communicated in sequence from outside to inside and have sequentially reduced inner diameters, and the compression assembly and the support assembly are arranged in the second branch hole;

one end of the valve rod, facing the input through hole, is provided with a piston, the piston extends out of the third branch hole and is combined with the input through hole to realize the closing of the input through hole;

the compression assembly comprises a compression ring, and the support assembly comprises a support ring; at least one V-shaped groove is formed in one of the pressing ring and the supporting ring, and at least one V-shaped protrusion respectively matched with the at least one V-shaped groove is formed in the other one of the pressing ring and the supporting ring;

the driving part drives the valve rod to move upwards when rotating reversely, so that the compression ring and the support ring are elastically deformed, and a gap between the valve rod and the operation through hole is blocked;

a second baffle is arranged on the outer side of the support ring;

the driving part includes: a screw plug screw-coupled into the first branch hole;

the inner end of the spiral plug abuts against the second baffle and a step part formed by the joint of the first branch hole and the second branch hole, and when the valve device allows a medium to flow from the input through hole to the output through hole, the spiral plug provides support for the second baffle of the support assembly.

2. The valve arrangement according to claim 1,

the outside of clamping ring is equipped with first separation blade.

3. The valve device according to claim 2, wherein the driving portion includes:

a screw threadedly coupled into the screw plug, an inner end of the screw being coupled with the valve stem to convert rotation of the screw into linear movement of the valve stem.

4. The valve device according to claim 3, wherein an inner end of the screw rod forms a combining chamber and a combining hole communicating with the combining chamber,

a first end of the valve stem forms a combining neck portion and a flange formed at a distal end of the combining neck portion and protruding radially outward,

the combining neck passes through the combining hole, and the flange is received in the combining chamber.

5. The valve arrangement according to claim 3, wherein the drive portion further comprises:

and the valve handle is arranged at the outer side end of the screw rod extending out of the screw plug and is used for rotating the screw rod.

6. The valve arrangement according to any one of claims 1-5, wherein the input through bore is axially aligned with the operational through bore, and the axial direction of the output through bore is substantially perpendicular to the axial direction of the input through bore.

7. The valve arrangement of claim 6, wherein the second end of the valve stem protrudes from the operational through-hole toward the inner end of the input through-hole to close or open the inner end of the input through-hole to allow or break communication between the input through-hole and the at least one output through-hole.

8. The valve assembly of claim 7 wherein the second end of the valve stem defines a groove, the groove having a gasket disposed therein.

9. The valve arrangement of claim 7, wherein the valve body comprises:

a main body portion on which the operation through hole and the output through hole are provided; and

the installation department, the first end detachably of installation department installs on the main part, the second end of installation department combines with the casing of external container, input through-hole axial runs through the installation department.

10. The valve assembly of claim 9, wherein the engagement of the mounting portion with the body portion defines a first sealing ring.

11. The valve device as claimed in claim 9, wherein the second end of the mounting portion is inserted into a coupling through-hole formed on a sidewall of the container, and a second sealing ring is provided at a position where the second end of the mounting portion is coupled to the coupling through-hole of the container.

12. The valve apparatus of claim 9, further comprising a first mounting frame mounted on the mounting portion, the valve apparatus being mounted on the side wall of the container by the first mounting frame.

13. The valve arrangement of claim 9, further comprising:

at least one second mounting frame respectively mounted at positions of the main body part at the output through holes; and

and the sealing plate is installed on the second installation frame and packaged at the outer side of the output through hole.

14. The valve arrangement of claim 13, wherein the seal plate comprises:

a base mounted on the second mounting frame;

an insertion portion extending from the base portion and inserted into the output through hole; and

and a third seal ring provided at an end of the insertion portion.