WO2023124692A1

WO2023124692A1 - Sealing structure of valve device and valve device

Info

Publication number: WO2023124692A1
Application number: PCT/CN2022/134695
Authority: WO
Inventors: 王俊杰
Original assignee: 浙江盾安人工环境股份有限公司
Priority date: 2021-12-30
Filing date: 2022-11-28
Publication date: 2023-07-06
Also published as: CN217381694U

Abstract

A sealing structure of a valve device and a valve device. The valve device comprises a sealing block (10), an elastic member (20), and a sealing ring (30). The elastic member (20) and the sealing ring (30) are sequentially sleeved on the sealing block (10), and a valve core (201) and a valve body (202) are in communication by means of the sealing block (10). The sealing block (10) comprises a rigid sealing surface (11), and the rigid sealing surface (11) can abut against the valve core (201) so as to assemble and seal the sealing block (10) and the valve core (201). The sealing ring (30) comprises a flexible sealing surface (31), and the flexible sealing surface (31) can abut against the valve body (202) so as to assemble and seal the sealing ring (30) and the valve body (202).

Description

A sealing structure of a valve device and the valve device

related application

This application claims the priority of the Chinese patent application filed on December 30, 2021 with the application number 202123437267.1 and the title of the invention is "a valve device sealing structure and valve device", the entire contents of which are incorporated in this application by reference .

technical field

The present application relates to the related technical field of valve device sealing, in particular to a sealing structure of a valve device and the valve device.

Background technique

At present, the sealing between the valve core and the valve body in the existing valve device door usually adopts the soft seal of the sealing ring, or the combination of soft and hard sealing method of the sealing ring and the sealing block. Since the valve core needs to rotate relative to the valve body when the valve body is working, the above sealing method cannot provide a strict sealing effect on the valve core and the valve body, thus causing internal leakage when the valve body is working. . In addition, since the assembly distance between the valve core and the valve body remains unchanged, the size of the existing sealing structure cannot be adjusted substantially, which makes it very difficult to assemble the sealing structure at the position between the valve core and the valve body

Contents of the invention

According to various embodiments of the present application, a sealing structure of a valve device and the valve device are provided.

A sealing structure of a valve device is installed between a valve core and a valve body, and is used for sealing the valve core and the valve body. The sealing structure includes a sealing block, an elastic member and a sealing ring. The elastic member and the sealing ring are sequentially fitted on the sealing block, and the valve core and the valve body are communicated through the sealing block. The sealing block includes a rigid sealing surface, and the rigid sealing surface can abut against the valve core to seal the seal block and the valve core in assembly. The sealing ring includes a flexible sealing surface, and the flexible sealing surface can abut against the valve body to seal the sealing ring and the valve body in assembly.

In this application, through the structural arrangement of the above-mentioned sealing block, elastic member and sealing ring, the sealing structure uses the rigid sealing surface to abut the sealing valve core, and uses the flexible sealing surface to abut the valve body, so as to realize the sealing effect of the sealing structure on the valve body. The effective sealing of soft and hard combination between the core and the valve body realizes the sealing on both sides of the dynamic side and the static side respectively, and the structural setting of the elastic member further ensures the sealing performance of the sealing structure for the assembly between the valve core and the valve body. Avoid leakage between the valve core and the valve body; at the same time, using the structural characteristics of the elastic member, the distance between the rigid sealing surface and the flexible sealing surface on the sealing structure can be greatly adjusted, thereby facilitating the assembly of the sealing structure to Between the spool and the valve body.

In one embodiment, the rigid sealing surface is configured as a circular arc surface matching the upper spherical surface of the valve core.

It can be understood that the rigid sealing surface is set to match the arc surface of the upper spherical surface of the valve core, so as to specifically realize the structural setting of the rigid sealing surface, thereby increasing the gap between the two when the rigid sealing surface abuts against the valve core. The degree of fit, so as to ensure that the rigid sealing surface is against the valve core to achieve the sealing effect of the two.

In one embodiment, the flexible sealing surface includes a plurality of annular convex surfaces, and the plurality of annular convex surfaces are sequentially arranged at intervals on one end of the sealing ring facing the valve body.

It can be understood that setting the flexible sealing surface as a structural arrangement of multiple annular convex surfaces, so as to specifically realize the structural arrangement of the flexible sealing surface, has the effect of ensuring the sealing effect of the two when the flexible sealing surface abuts against the valve body .

In one embodiment, the elastic member is installed between the sealing block and the sealing ring in a pre-compressed manner, and the elastic member can respectively push the sealing block and the sealing ring in opposite directions. lock up.

It can be understood that the assembly of the elastic member between the sealing block and the sealing ring is specifically realized by pre-compressing the elastic member.

In one embodiment, the elastic member includes a plurality of wave springs, and the plurality of wave springs are stacked.

It can be understood that, by arranging the elastic member as a plurality of wave springs, the structural arrangement of the elastic member can be specifically realized, and the service life of the elastic member can be prolonged by utilizing the structural characteristics of the wave springs.

In one embodiment, the sealing structure further includes a spacer, and the spacer is arranged between the sealing ring and the elastic member, and the elastic member can push the elastic member through the spacer. The sealing ring, so that the flexible sealing surface of the sealing ring is against the valve body.

It can be understood that the stability of the sealing ring under stress can be improved through the structural arrangement of the spacer.

In one embodiment, the sealing block includes a block portion and a sleeve portion, the rigid sealing surface is arranged on an end of the block portion away from the sleeve portion, and the sleeve portion faces toward the The direction part of the valve body is inserted into the valve body.

It can be understood that the structural setting of the sealing block is realized through the above structural setting of the sealing block.

In one embodiment, a boss is provided on the stopper, and the rigid sealing surface is arranged on an end surface of the boss away from the stopper.

It can be understood that, through the structural arrangement of the above-mentioned boss, the structural arrangement of the rigid sealing surface on the stopper part is specifically realized, so that when the sealing structure is assembled between the valve core and the valve body, the tooling that compresses the sealing structure can be used. The abutment of the pressure plate on the stopper part is limited, so that the sealing structure is assembled to the position between the valve core and the valve body.

In one embodiment, the blocking portion is provided with a plurality of connecting ribs, and the plurality of connecting ribs are sequentially connected to the outer peripheral wall of the boss at intervals.

It can be understood that, through the structural arrangement of the above-mentioned connecting ribs, the stability of the contact when the tooling pressure plate is abutted against the stopper portion is further improved.

The present application also claims a valve device, which includes a valve core, a valve body and a sealing structure, and the sealing structure is installed between the valve core and the valve body to protect the valve core and the valve body. The valve body is assembled and sealed; the sealing structure is the above-mentioned sealing structure.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects and advantages of the present application will be apparent from the description, drawings and claims.

Description of drawings

In order to better describe and illustrate embodiments and/or examples of the inventions disclosed herein, reference may be made to one or more of the accompanying drawings. Additional details or examples used to describe the drawings should not be considered limitations on the scope of any of the disclosed inventions, the presently described embodiments and/or examples, and the best mode of these inventions currently understood.

Fig. 1 is a structural schematic diagram of a sealing structure of a valve device according to one or more embodiments/some embodiments.

Figure 2 is an exploded view of a sealing structure of a valve arrangement according to one or more/some embodiments.

Fig. 3 is a schematic structural diagram of the sealing block in the present application.

Fig. 4 is a cross-sectional view of the sealing structure of the present application when assembled between the valve core and the valve body.

Fig. 5 is a partial sectional view of the valve device of the present application.

FIG. 6 is a structural schematic view of the sealing structure of the valve device of the present application when it is assembled to the valve body by a tooling plate.

Among them, 10, sealing block; 11, rigid sealing surface; 111, arc surface; 110, block part; 1110, boss; 1111, peripheral wall; 1120, connecting rib; 210, wave spring; 30, sealing ring; 31, flexible sealing surface; 311, annular convex surface; 40, septum; 410, flat gasket; 201, valve core; 2011, spherical surface; 202, valve body; mouth edge; 203, tooling plate; 2031, groove.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the accompanying drawings in the embodiments of the application. Apparently, the described embodiments are only part of the embodiments of the application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be noted that when an element is referred to as being “disposed on” another element, it may be directly disposed on the other element or there may be an intervening element. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "affixed to" another element, it can be directly affixed to the other element or intervening elements may also be present.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terminology used in the description of the present application is only for the purpose of describing specific implementations, and is not intended to limit the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in Figure 4 and Figure 5, the valve device provided by an embodiment of the present application includes a valve core 201, a valve body 202 and a sealing structure, which are installed at a position between the valve core 201 and the valve body 202 to control the valve The core 201 and the valve body 202 are assembled and sealed. It should be noted that, the above-mentioned sealing structure is specifically that the valve core 201 and the upper pipe portion of the valve body 202 are assembled and sealed.

As shown in Figure 1 and Figure 2, the sealing structure of the present application includes a sealing block 10, an elastic member 20 and a sealing ring 30, wherein the elastic member 20 and the sealing ring 30 are sequentially set on the sealing block 10, and the valve core 201 and the valve body 202 communicates through the sealing block 10 .

Specifically, the sealing block 10 includes a rigid sealing surface 11, and the rigid sealing surface 11 can be pressed against the valve core 201 to seal the sealing block 10 and the valve core 201; the sealing ring 30 includes a flexible sealing surface 31, and the flexible sealing surface 31 can Abut against the valve body 202 to seal the sealing ring 30 and the valve body 202 . That is to say, when the sealing structure is assembled between the valve core 201 and the valve body 202, it can perform hard sealing on the valve core 201 and soft sealing on the valve body 202, so as to achieve soft sealing between the valve core 201 and the valve body 202. Hard-bonded effective sealing realizes sealing on both sides of the dynamic side and the static side respectively. It should be noted that the sealing structure is assembled to the position between the valve core 201 and the valve body 202, the sealing block 10 partially protrudes into the valve body 202, and the flexible sealing surface 31 of the sealing ring 30 can abut against the valve body 202. On the edge of the nozzle 2021.

It can be understood that the sealing structure is provided with an elastic member 20 between the sealing ring 30 and the sealing block 10, so as to ensure the sealing of the sealing structure to the assembly between the valve core 201 and the valve body 202, and avoid the valve core 201 and the valve body 202 Leakage occurs between them; in addition, using the structural setting of the elastic member 20, the distance between the rigid sealing surface 11 and the flexible sealing surface 31 used to seal the valve core 201 and the valve body 202 on the sealing structure can be greatly adjusted, Furthermore, it is convenient to assemble the sealing structure between the valve core 201 and the valve body 202 .

As shown in Figure 3 and Figure 5, the rigid sealing surface 11 is set to match the arc surface 111 of the spherical surface 2011 on the valve core 201, so as to specifically realize the structural setting of the rigid sealing surface 11 and increase the rigid sealing surface 11 against When it is on the spool 201 , the fit between the two can ensure the sealing effect of the two when the rigid sealing surface 11 abuts on the spool 201 . Of course, the rigid sealing surface 11 is not limited to what is shown in the figure, and for those skilled in the art, the rigid sealing surface 11 can be set as a plane, which will not be elaborated here.

As shown in Figures 1 and 2, the flexible sealing surface 31 on the sealing ring 30 includes a plurality of annular convex surfaces 311, and the plurality of annular convex surfaces 311 are sequentially and spacedly arranged on one end of the sealing ring 30 facing the valve body 202, so as to specifically realize this. The structural arrangement of the flexible sealing surface ensures that the flexible sealing surface 31 abuts against the valve body 202 to achieve the sealing effect of both and provides an elastic margin supplement to enhance the sealing effect. In some embodiments, the sealing ring 30 can be an X-shaped sealing ring. Of course, it should be noted that the flexible sealing surface 31 is not limited to what is shown in the figure, and those skilled in the art can set the flexible sealing surface 31 as a plane, an arc, or other shapes.

As shown in Figure 1, the elastic member 20 is installed between the sealing block 10 and the sealing ring 30 in a pre-compressed manner, and the elastic member 20 can push the sealing block 10 and the sealing ring 30 in opposite directions respectively, so that the elastic The component 20 is assembled between the sealing block 10 and the sealing ring 30, so that the rigid sealing surface 11 on the sealing block 10 can be close to the valve core 201, and at the same time, the flexible sealing surface 31 on the sealing ring 30 can squeeze the valve body 202 and generate deformation, so as to ensure the sealability of the sealing structure to the assembly of the valve core 201 and the valve body 202 .

Specifically, the elastic member 20 includes a plurality of wave springs 210, and the plurality of wave springs 210 are stacked so as to specifically realize the structural arrangement of the elastic member 20. By utilizing the structural characteristics of the wave springs 210, the service life of the elastic member 20 can be extended. effect. The elastic member 20 can also be configured as a single wave spring. Certainly, the elastic member 20 is not limited to the wave spring 210 described in the figure, and for those skilled in the art, the elastic member 20 can be set as other springs such as compression springs.

As shown in Figures 1 and 2, the sealing structure further includes a septum 40, which is disposed between the sealing ring 30 and the elastic member 20, and the elastic member 20 can push the sealing ring 30 through the septum 40, The flexible sealing surface 31 of the sealing ring 30 is made to abut against the valve body 202 , thereby improving the stability of the sealing ring 30 under force.

Specifically, the spacer 40 is configured as a flat spacer 410 , so as to realize the structural arrangement of the spacer 40 .

As shown in FIG. 3 , the sealing block 10 includes a block portion 110 and a sleeve portion 120, the rigid sealing surface 11 is arranged on the end portion of the block portion 110 away from the sleeve portion 120, and the sleeve portion 120 faces the valve body 202. The direction part is inserted into the valve body 202, so as to realize the structure of the sealing block 10 in detail.

Wherein, the block portion 110 is provided with a boss 1110, and the rigid sealing surface 11 is arranged on an end surface of the boss 1110 away from the block portion 110, so as to realize the sealing of the rigid sealing surface 11 on the block portion 110. The structure is set so that when the sealing structure is assembled between the valve core 201 and the valve body 202, the position of the tooling plate 203 that compresses the sealing structure can be limited against the stopper part 110, so as to facilitate the assembly of the sealing structure to The position between the valve core 201 and the valve body 202 .

Further, the block portion 110 is provided with a plurality of connecting ribs 1120, and the plurality of connecting ribs 1120 are sequentially arranged at intervals and connected with the outer peripheral wall 1111 of the boss 1110, so as to further improve the adhesion between the tooling platen 203 and the block portion 110. Stability by time contact. It should be noted that the tooling plate 203 is provided with a groove 2031 matching the connecting rib 1120 .

As shown in Figure 4, when the sealing structure is assembled to the valve body 202 and the valve core 201, the elastic member 20, the spacer 40 and the sealing ring 30 can be sequentially sleeved on the sleeve part 120 of the sealing block 10, and then the sealing The sleeve part 120 on the block 10 is aligned with the valve body 202 and inserted until the flexible sealing surface 31 on the sealing ring 30 abuts against the nozzle edge 2021 of the valve body 202, so as to realize the assembly of the sealing structure on the valve body 202, and then use The tooling pressure plate 203 presses against the block portion 110 of the sealing block 10 and compresses the elastic member 20, and finally puts the valve core 201 into the valve body 202, so as to realize the assembly of the sealing structure between the valve core 201 and the valve body 202 position for easy assembly.

In addition, the sealing block 10 and the sealing ring 30 of the present application are respectively provided with anti-corrosion coatings, so as to meet the use requirements when the sealing structure is applied to work between the valve core 201 and the valve body 202 .

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims

A sealing structure of a valve device, installed at a position between a valve core and a valve body of the valve device, and used to seal the valve core and the valve body (202);

It is characterized in that the sealing structure includes a sealing block, an elastic member and a sealing ring, the elastic member and the sealing ring are sequentially set on the sealing block, and the valve core and the valve body pass through the sealing block connected;

The sealing block includes a rigid sealing surface, and the rigid sealing surface can be against the valve core to seal the seal block and the valve core in assembly;

The sealing ring includes a flexible sealing surface, and the flexible sealing surface can abut against the valve body to seal the sealing ring and the valve body in assembly.
The sealing structure of the valve device according to claim 1, wherein the rigid sealing surface (11) is set as an arc surface matching the upper spherical surface (2011) of the valve core.
The sealing structure of the valve device according to claim 1, wherein the flexible sealing surface includes a plurality of annular convex surfaces, and the plurality of annular convex surfaces are sequentially and spacedly arranged on the sealing ring toward one end of the valve body superior.
The sealing structure of the valve device according to claim 1, wherein the elastic member is installed between the sealing block and the sealing ring in a pre-compressed manner, and the elastic member can be respectively pushed in opposite directions. Top the sealing block and the sealing ring.
The sealing structure of the valve device according to claim 4, wherein the elastic member comprises a plurality of wave springs, and the plurality of wave springs are stacked.
The sealing structure of the valve device according to claim 1, wherein the sealing structure further comprises a spacer, the spacer is arranged between the sealing ring and the elastic member (20), and the elastic member The sealing ring can be pushed by the spacer, so that the flexible sealing surface of the sealing ring (202) is against the valve body (202).
The sealing structure of the valve device according to claim 1, wherein the sealing block includes a block portion and a sleeve portion, and the rigid sealing surface is located at an end of the block portion away from the sleeve portion, The sleeve portion is partially inserted into the valve body toward the valve body.
The sealing structure of a valve device according to claim 7, wherein a boss is provided on the stopper, and the rigid sealing surface is located on an end surface of the boss away from the stopper.
The sealing structure of the valve device according to claim 8, wherein a plurality of connecting ribs are arranged on the stopper part, and the plurality of connecting ribs are arranged at intervals in sequence and connected with the outer peripheral wall of the boss.
A valve device, including a valve core, a valve body and a sealing structure, the sealing structure is installed between the valve core and the valve body, and is used to assemble and seal the valve core and the valve body ; It is characterized in that the sealing structure is the sealing structure described in any one of claims 1-9.