CN211288825U - Valve sealing structure and valve with same - Google Patents
Valve sealing structure and valve with same Download PDFInfo
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- CN211288825U CN211288825U CN201921791735.5U CN201921791735U CN211288825U CN 211288825 U CN211288825 U CN 211288825U CN 201921791735 U CN201921791735 U CN 201921791735U CN 211288825 U CN211288825 U CN 211288825U
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Abstract
The utility model relates to the technical field of valves, especially, relate to a valve seal structure and valve thereof. A valve sealing structure comprises a valve seat, a sealing element and a valve core assembly, wherein a valve port is arranged on the valve seat, a sealing groove is arranged on the valve core assembly, one end of the sealing element is hermetically arranged in the sealing groove, and the other end of the sealing element extends out of a groove opening of the sealing groove and is used for being matched with the valve seat; the valve core assembly comprises a valve core and a pressing block, an installation step is arranged on one end face, close to the valve seat, of the valve core, the pressing block is installed at the installation step, a channel for allowing a medium in the valve port to flow into the sealing groove is formed between the step face of the installation step and the outer wall, facing the valve core, of the pressing block, and the sealing groove is communicated with the channel. A valve comprises a valve body and a valve sealing structure. The utility model has the advantages that: the sealing effect is better, and the sealing is more reliable.
Description
Technical Field
The utility model relates to the technical field of valves, especially, relate to a valve seal structure and valve thereof.
Background
Valves are usually installed on the pipes for transporting fluid, and are used to control the opening/closing of the pipes to control the flow of the fluid. At present, a valve generally includes a valve seat having a valve port, and a valve core installed inside a valve body for sealing the valve port.
At present, when the valve core seals the valve port, the valve is usually sealed only by external force acting on the valve core. However, this sealing method has poor sealing effect and insufficient reliability.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a valve sealing structure with reliable sealing and good sealing effect and a valve having the same.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
a valve sealing structure comprises a valve seat, a sealing element and a valve core assembly, wherein a valve port is arranged on the valve seat, a sealing groove is arranged on the valve core assembly, one end of the sealing element is hermetically arranged in the sealing groove, and the other end of the sealing element extends out of a groove opening of the sealing groove and is used for being matched with the valve seat;
the valve core assembly comprises a valve core and a pressing block, an installation step is arranged on one end face, close to the valve seat, of the valve core, the pressing block is installed at the installation step, a channel for allowing a medium in the valve port to flow into the sealing groove is formed between the step face of the installation step and the outer wall, facing the valve core, of the pressing block, and the channel is communicated with the sealing groove.
In the application, a fluid channel is arranged to communicate a valve port with the sealing groove; therefore, when the sealing element seals the valve port on the valve seat, the reverse pressure at the valve port acts on the sealing element through the fluid channel to push the sealing element and the valve seat to be abutted more tightly, so that the sealing effect and the sealing reliability are effectively improved; meanwhile, it can be understood that the larger the reverse pressure is, the larger the thrust force applied to the sealing element is, and the better the sealing effect is; therefore, the valve sealing structure can be suitable for various pressure pipelines, and the application places of the valve sealing structure are widened.
In one embodiment, a groove/counter bore structure is formed in an end surface of the sealing member away from the valve seat, and the passage is communicated with the groove/counter bore structure.
It can be understood that the arrangement of the groove/hole structure can increase the stressed area of the sealing element, thereby increasing the thrust force borne by the sealing element and further improving the sealing effect of the sealing element.
In one embodiment, the channel is "L" shaped in cross-section.
In one embodiment, the sealing member includes an installation portion and a sealing portion, the sealing portion is disposed on the installation portion and forms a positioning step between the installation portion, a supporting portion is formed on a groove wall of the sealing groove, the installation portion is installed in the sealing groove, the supporting portion supports against the positioning step, and the sealing portion extends out of a notch of the sealing groove and is used for being matched with the valve seat to seal the valve port.
It can be understood that the positioning step and the abutting portion can realize the integral positioning of the sealing element, and the sealing element is prevented from being separated from the sealing groove under the action of thrust, so that the sealing failure and other conditions are avoided.
In one embodiment, the notch of the sealing groove is inwardly formed with a necking to form the abutting portion on the groove wall of the sealing groove.
In one embodiment, the valve core is provided with a first half groove, the pressing block is provided with a second half groove, the pressing block is fixed on the valve core through a fastener, and the first half groove and the second half groove are spliced to form the sealing groove.
It can be understood that the sealing groove is formed by splicing the first half groove and the second half groove, so that the sealing element is greatly convenient to mount and dismount, and the maintenance is more convenient.
The utility model discloses still provide following technical scheme:
a valve comprises a valve body and the valve sealing structure, wherein the valve seat is arranged in the valve body in a sealing mode.
In one embodiment, the valve further comprises an elastic member in a compressed state, the elastic member is arranged between the valve seat and the valve body, and one end of the elastic member abuts against the valve body while the other end abuts against the valve seat.
It can be understood that, through the arrangement of the elastic part, when the sealing part is in a sealing state, the elastic part can apply force to the valve seat, so that the valve seat has a tendency of moving towards the valve core assembly, and therefore the sealing part is in closer contact with the valve seat, the sealing effect is better, and the sealing is more reliable.
In one embodiment, a blocking portion is formed on a side wall of the valve body, a mounting hole is formed in the valve seat, one end of the elastic member abuts against the blocking portion, and the other end of the elastic member is mounted in the mounting hole.
In one embodiment, the valve core assembly includes a valve core and a valve rod, the valve rod is installed inside the valve body, an axis of the valve rod is perpendicular to the flow direction of the valve medium, the valve core is vertically installed on the valve rod, and the valve core can rotate relative to the valve rod from the vertical direction to the flow direction of the medium so as to cooperate with the valve seat to seal the valve.
Compared with the prior art, the valve sealing structure is provided with the fluid channel to communicate the valve port with the sealing groove; therefore, when the sealing element seals the valve port on the valve seat, the reverse pressure at the valve port acts on the sealing element through the fluid channel to push the sealing element and the valve seat to be abutted more tightly, so that the sealing effect and the sealing reliability are effectively improved; meanwhile, it can be understood that the larger the reverse pressure is, the larger the thrust force applied to the sealing element is, and the better the sealing effect is; therefore, the valve sealing structure can be suitable for various pressure pipelines, and the application places of the valve sealing structure are widened.
Drawings
FIG. 1 is a schematic structural view of a valve provided herein;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic structural view of a seal provided herein;
fig. 4 is an enlarged schematic view of a valve core assembly layout provided by the present application.
In the figure, the valve 100, the valve body 10, the inlet 11, the outlet 12, the valve chamber 13, the stopper 14, the valve sealing structure 20, the valve seat 21, the valve port 211, the arc surface 212, the mounting hole 213, the sealing member 22, the groove/counter bore structure 221, the mounting portion 22a, the sealing portion 22b, the positioning step 222, the valve core assembly 23, the sealing groove 231, the abutting portion 231a, the reduced portion 231b, the passage 232, the valve core 233, the first half groove 233a, the pressing block 234, the second half groove 234a, the valve rod 235, the fastening member 236, the elastic member 30, the valve cover 40, and the suspension buckle 41.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the present invention provides a valve 100 installed on a pipeline for opening/closing the pipeline to control the flow of fluid in the pipeline. Here, the fluid may be water, gas, or the like.
The valve 100 may be a ball valve or other type of valve, etc.
Preferably, in this embodiment, the valve 100 is a ball valve. More preferably, the ball valve is of the kind that is a semi-eccentric ball valve.
Specifically, the valve 100 comprises a valve body 10 and a valve sealing structure 20, wherein the valve sealing structure 20 is installed inside the valve body 10, and the valve sealing structure 20 is used for controlling the opening/closing of the valve 100 to realize the opening/closing of a control pipeline.
Further, the valve body 10 has an inlet 11 and an outlet 12 opposite to each other, the valve body 10 further has a valve cavity 13, and a part of the valve sealing structure 20 is installed in the valve cavity 13, and another part of the valve sealing structure is installed at the outlet 12.
As shown in fig. 1 and 2, the valve sealing structure 20 includes a valve seat 21, a sealing member 22, and a valve core assembly 23, wherein the valve seat 21 has a valve port 211, the valve core assembly 23 is provided with a sealing groove 231, one end of the sealing member 22 is sealingly installed in the sealing groove 231, and the other end of the sealing member extends out of the groove of the sealing groove 231, and is configured to cooperate with the valve seat 21 to open and close the valve port 211. The valve core assembly 23 includes a valve core 233 and a pressing block 234, an installation step 232 is disposed on one end surface of the valve core 233 close to the valve seat 21, the pressing block 234 is installed at the installation step 232, a channel 232 through which a medium in the valve port 211 flows into the sealing groove 231 is formed between the step surface of the installation step 232 and the outer wall of the pressing block 234 facing one side of the valve core 233, and the sealing groove 231 is communicated with the channel 232.
It can be understood that when the sealing element 22 seals the valve port 211 on the valve seat 21, the reverse pressure at the valve port 211 acts on the sealing element 22 through the channel 232 to push the abutting between the sealing element 22 and the valve seat 21 to be tighter, which effectively improves the sealing effect and the sealing reliability; meanwhile, it can be understood that the larger the reverse pressure is, the larger the thrust force applied to the sealing member 22 is, and the better the sealing effect is; therefore, the valve sealing structure 20 can be adapted to various pressure pipelines, and the application places of the valve sealing structure are widened.
Further, the valve core assembly 23 is rotatably installed in the valve chamber 13, the valve seat 21 is sealingly installed at the outlet 12 of the valve body 10, the outlet 12 is communicated with the valve port 211, and the rotation of the valve core assembly 23 controls the opening/closing of the valve port 211 to control the communication/disconnection between the inlet 11 and the outlet 12. The reverse pressure at the valve port 211 is such that the outlet 12 side is closed after the conduit is closed.
The valve seat 21 is approximately annular, the inner side of the annular valve seat 21 is the valve port 211, the inner side of one end, close to the sealing element 22, of the valve seat 21 is provided with an arc surface 212, and the sealing element 22 abuts against the arc surface 212, so that the sealing between the sealing element 22 and the valve seat 21 is realized.
It can be understood that the arc surface 212 is provided to reduce the contact surface between the sealing member 22 and the valve seat 21 when the sealing member 22 acts on the valve seat 21, so as to increase the acting force of the sealing member 22 acting on the valve seat 21, thereby improving the sealing effect of the sealing member 22; secondly, the arrangement of the cambered surface 212 also has a certain guiding function, so that the movement of the sealing element 22 can be better guided.
As shown in fig. 3, the surface of the end of the seal 22 remote from the valve seat 21 is provided with a groove/counter-bore structure 221, the groove/counter-bore structure 221 communicating with the passage. It can be understood that the provision of the groove/counterbore structure 221 can increase the force-bearing area of the seal 22, that is, as shown in the formula F ═ ps, the force-bearing area of the seal 22 is increased, so that the thrust force applied to the seal 22 is increased, and the sealing effect of the seal 22 is further improved.
Preferably, the groove/counter bore structure 221 may be a groove or a counter bore, etc. formed in the sealing member 22. Alternatively, bumps may be provided on the surface of the seal 22, with the groove/counterbore structure 221 formed between adjacent bumps.
In this embodiment, the end surface of the sealing member 22 away from the valve seat 21 is grooved to increase the force-bearing area of the sealing member 22.
Preferably, the sealing member 22 is made of rubber, silicone, or the like, that is, the sealing member 22 is a rubber member or a silicone member.
Further, the sealing member 22 includes a mounting portion 22a and a sealing portion 22b, the sealing portion 22b is disposed on the mounting portion 22a and forms a positioning step 222 with the mounting portion 22a, a groove wall of the sealing groove 231 is formed with an abutting portion 231a, the mounting portion 22a is mounted in the sealing groove 231, the abutting portion 231a abuts against the positioning step 222, and the sealing portion 22b extends from a notch of the sealing groove 231 and is used for cooperating with the valve seat 21 to seal the valve port 211.
It can be understood that, by the arrangement of the positioning step 222 and the abutting portion 231a, the whole sealing member 22 can be positioned, and the sealing member 22 is prevented from being separated from the sealing groove 231 under the action of thrust force, which causes the occurrence of sealing failure and the like.
Preferably, a notch of the sealing groove 231 is inwardly formed with a constricted portion 231b to form the abutting portion 231a on a groove wall of the sealing groove 231.
As shown in fig. 2, the valve core assembly 23 further includes a valve rod 235, the valve rod 235 is installed inside the valve body 10, an axis of the valve rod 235 is perpendicular to a medium flow direction of the valve 100, the valve core 233 is vertically installed on the valve rod 235, and the valve core 233 can rotate relative to the valve rod 235 from the vertical direction to the medium flow direction to cooperate with the valve seat 21 to seal the valve port 211.
Further, the pressing piece 234 is fixed to the spool 233 by a fastener 236. It will be appreciated that the valve core 233 and the pressure piece 234 are connected by means of fasteners 236 for easier removal/installation. Preferably, the fastener 236 may be a screw, or the like.
As shown in fig. 4, the valve core 233 is provided with a first half groove 233a, the pressing block 234 is provided with a second half groove 234a, the pressing block 234 is fixed on the valve core 233 by a fastener and is spaced from the valve core 233 to form the channel 232, and the first half groove 233a and the second half groove 234a are combined to form the sealing groove 231. It can be understood that the sealing groove 231 is formed by combining the first half groove 233a and the second half groove 234a, which greatly facilitates the installation and disassembly of the sealing member 22, and the maintenance is more convenient.
As shown in fig. 2, the valve 100 further includes an elastic member 30 in a compressed state, the elastic member 30 is disposed between the valve seat 21 and the valve body 10, and one end of the elastic member 30 abuts against the valve body 10 and the other end abuts against the valve seat 21.
It can be understood that by providing the elastic member 30, when the sealing member 22 is in the sealing state, the elastic member can apply force to the valve seat 21, so that the valve seat 21 has a tendency to move towards the valve core 233 assembly 23, and therefore, the sealing member 22 and the valve seat 21 are connected more tightly, the sealing effect is better, and the sealing is more reliable.
Specifically, a stopper 14 is disposed at the outlet 12 of the valve body 10, a mounting hole 213 is opened at one end of the valve seat 21 away from the sealing element 22, one end of the elastic element 30 abuts against the stopper 14, and the other end is mounted in the mounting hole 213.
Further, as shown in fig. 1, the valve 100 further includes a valve cover 40, and the valve cover 40 is hermetically covered on the valve body 10 and encloses the valve cavity 13 with the valve body 10. Preferably, the valve cover 40 is coupled to the valve body 10 by a plurality of screws.
Optionally, a hanging buckle 41 is connected to the valve cover 40, and the hanging buckle 41 is used for cooperating with an external hoisting device or the like to carry the valve 100.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A valve sealing structure comprises a valve seat, a sealing element and a valve core assembly, wherein a valve port is arranged on the valve seat, a sealing groove is arranged on the valve core assembly, one end of the sealing element is hermetically arranged in the sealing groove, and the other end of the sealing element extends out of a groove opening of the sealing groove and is used for being matched with the valve seat;
the valve core assembly is characterized by comprising a valve core and a pressing block, wherein an installation step is arranged on one end face, close to the valve seat, of the valve core, the pressing block is installed at the installation step, a channel for allowing a medium in the valve port to flow into the sealing groove is formed between the step face of the installation step and the outer wall of one side of the valve core, and the channel is communicated with the sealing groove.
2. A valve seal arrangement according to claim 1, wherein the face of the end of the seal remote from the valve seat is provided with a groove/counterbore arrangement, the passage communicating with the groove/counterbore arrangement.
3. A valve seal structure according to claim 1, wherein the passage is "L" shaped in cross-section.
4. The valve seal structure of claim 1, wherein the sealing member includes an installation portion and a sealing portion, the sealing portion is disposed on the installation portion and forms a positioning step with the installation portion, a supporting portion is formed on a groove wall of the sealing groove, the installation portion is installed in the sealing groove, the supporting portion supports against the positioning step, and the sealing portion extends out of a notch of the sealing groove and is used for being matched with the valve seat to seal the valve port.
5. The valve seal structure of claim 4, wherein the notch of the seal groove is inwardly constricted to form the abutting portion on the groove wall of the seal groove.
6. The valve sealing structure according to claim 1, wherein the valve core is provided with a first half groove, the pressing block is provided with a second half groove, the pressing block is fixed on the valve core through a fastener, and the first half groove and the second half groove are spliced to form the sealing groove.
7. A valve comprising a valve body and a valve seal structure according to any one of claims 1 to 6.
8. The valve of claim 7, further comprising a resilient member in a compressed state, wherein the resilient member is disposed between the valve seat and the valve body, and wherein one end of the resilient member abuts against the valve body and the other end abuts against the valve seat.
9. The valve according to claim 8, wherein a stop portion is formed on a side wall of the valve body, a mounting hole is formed on the valve seat, one end of the elastic member abuts against the stop portion, and the other end of the elastic member is mounted in the mounting hole.
10. The valve of claim 7, wherein the cartridge assembly includes a cartridge and a stem, the stem is mounted inside the valve body, an axis of the stem is perpendicular to the valve media flow direction, the cartridge is vertically mounted on the stem, and the cartridge is capable of rotating relative to the stem from the vertical direction toward the media flow direction to cooperate with the valve seat to seal the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921791735.5U CN211288825U (en) | 2019-10-23 | 2019-10-23 | Valve sealing structure and valve with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921791735.5U CN211288825U (en) | 2019-10-23 | 2019-10-23 | Valve sealing structure and valve with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211288825U true CN211288825U (en) | 2020-08-18 |
Family
ID=72021932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921791735.5U Active CN211288825U (en) | 2019-10-23 | 2019-10-23 | Valve sealing structure and valve with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211288825U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370515A (en) * | 2021-12-28 | 2022-04-19 | 浙江银轮机械股份有限公司 | Flow passage plate structure |
-
2019
- 2019-10-23 CN CN201921791735.5U patent/CN211288825U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370515A (en) * | 2021-12-28 | 2022-04-19 | 浙江银轮机械股份有限公司 | Flow passage plate structure |
| CN114370515B (en) * | 2021-12-28 | 2024-05-28 | 浙江银轮机械股份有限公司 | Flow passage plate structure |
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