CN221547863U - Zero leakage valve sealing structure and valve with same - Google Patents
Zero leakage valve sealing structure and valve with same Download PDFInfo
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- CN221547863U CN221547863U CN202323582274.XU CN202323582274U CN221547863U CN 221547863 U CN221547863 U CN 221547863U CN 202323582274 U CN202323582274 U CN 202323582274U CN 221547863 U CN221547863 U CN 221547863U
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Abstract
The utility model belongs to the field of valve structure design, and particularly discloses a zero-leakage valve sealing structure and a valve with the same, wherein the zero-leakage valve sealing structure comprises a valve body, a channel is arranged on the valve body, and an inner cavity is arranged in the valve body; the sealing component is arranged in the inner cavity, is annular and is arranged at the outer side of the channel; the lock nut is arranged in the inner cavity, is in threaded connection with the inner wall of the inner cavity and is used for compressing the sealing assembly; the valve core is arranged in the inner cavity in a sliding manner, the valve core is arranged opposite to the channel, and the outer diameter of the valve core is larger than the inner diameter of the sealing assembly; the utility model can ensure that the sealing effect is better when the valve core is abutted with the sealing component, zero leakage can be realized, and the mounting mode of the sealing component is simple and the structure is reliable.
Description
Technical Field
The utility model belongs to the field of valve structural design, and particularly relates to a zero-leakage valve sealing structure and a valve with the zero-leakage valve sealing structure.
Background
The valve is a control part in a fluid system, is a device for changing the section of a passage and the flow direction of a medium and controlling the movement of the medium to be conveyed, and has wide application, and a large number of valves and various types are required in industries, agriculture, national defense tips, departments of transportation, people living and the like.
In the structural design of the valve, the design of the sealing pair is very important. The existing valve sealing pair adopts three sealing modes: metal + metal seal, metal + non-metal seal, bellows seal; the existing metal and nonmetal seal is generally made of fluoroplastic or hard rubber, and is fixed through bolts or cold pressing and edge rolling processes, and the like, so that the process is complex, the pressure precision requirement on cold pressing is high, and when the pressure value is unsuitable, the conditions that the fluoroplastic is cracked, an annular groove cannot be filled, a sealing block falls off, protrudes and the like can occur, so that the sealing performance of the valve is affected.
Disclosure of utility model
The utility model aims to provide a zero-leakage valve sealing structure and a valve with the zero-leakage valve sealing structure, which can enable the sealing effect to be better when a valve core is abutted with a sealing component, can realize zero leakage, and are simple in installation mode and reliable in structure.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: provided is a zero leakage valve sealing structure, comprising:
the valve body is provided with a channel, and an inner cavity is formed in the valve body;
The sealing component is arranged in the inner cavity, is annular and is arranged at the outer side of the channel;
the lock nut is arranged in the inner cavity, is in threaded connection with the inner wall of the inner cavity and is used for compressing the sealing assembly;
The valve core is arranged in the inner cavity in a sliding manner, the valve core is arranged opposite to the channel, and the outer diameter of the valve core is larger than the inner diameter of the sealing assembly.
Further, the zero leakage valve sealing structure further comprises a base, the base is arranged in the inner cavity, a through hole communicated with the channel is formed in the base, and the sealing assembly is arranged on the base.
Further, a containing groove is formed in one end, close to the valve core, of the base, and the sealing assembly is arranged in the containing groove.
Further, the width of the sealing component is larger than the width of the accommodating groove, and the height of the sealing component is larger than the height of the accommodating groove.
Further, the sealing component comprises a sealing ring and an O-shaped ring, the valve core is abutted on the sealing ring, one end of the sealing ring, which is away from the valve core, is provided with a mounting groove, the O-shaped ring is arranged in the mounting groove,
Further, the section of the sealing ring is in an inverted L shape, and the mounting groove is positioned on the outer side of one end of the sealing ring, which is away from the valve core.
Further, the diameter of the O-shaped ring is smaller than the diameter of the mounting groove, the width of the cross section of the O-shaped ring is larger than the width of the cross section of the mounting groove, and the height of the cross section of the O-shaped ring is larger than the height of the cross section of the mounting groove.
Further, a first chamfer is arranged on the inner wall of the sealing ring, which is close to one end of the valve core, a second chamfer is arranged on the outer wall of the valve core, which is close to one end of the sealing ring, and the second chamfer is abutted to the first chamfer
Further, the first chamfer and the second chamfer are the same in angle, and the length of the first chamfer is smaller than that of the second chamfer.
The valve comprises the zero leakage valve sealing structure, a valve cover, a guide sleeve and an elastic component, wherein one end of the guide sleeve is sleeved in the valve body, the other end of the guide sleeve is sleeved in the valve cover, the valve core is slidably arranged in the guide sleeve, one end of the elastic component is abutted to the valve core, and the other end of the elastic component is abutted to the valve cover.
The utility model has the following beneficial effects:
According to the zero leakage valve sealing structure, the sealing assembly can be pressed by connecting the locking nut with the inner wall of the inner cavity in a threaded manner, the sealing assembly is pressed in the inner cavity and is positioned on the outer side of the channel, when the valve core slides in the inner cavity and is far away from the sealing assembly, the channel is opened, the valve sealing structure is in an open state, when the valve core slides in the inner cavity to be close to the sealing assembly and is abutted to the sealing assembly, the channel is closed, the valve sealing structure is in a closed state, and the locking nut can press the sealing assembly, so that the sealing effect when the valve core is abutted to the sealing assembly is better, zero leakage can be achieved, the installation mode of the sealing assembly is simple, and the structure is reliable.
The valve according to the embodiment of the utility model is designed based on the zero-leakage valve sealing structure, and the beneficial effects of the zero-leakage valve sealing structure are referred to and are not described in detail herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of a valve according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of a valve cartridge provided by an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of a seal ring provided by an embodiment of the present utility model;
fig. 4 is a cross-sectional view of a base provided in an embodiment of the present utility model.
The figure identifies the description:
1. A valve body; 2. a seal assembly; 3. a lock nut; 4. a valve core; 5. a base; 6. a guide sleeve; 7. an elastic component; 8. a valve cover; 11. a channel; 12. an inner cavity; 21. a seal ring; 22. an O-ring; 23. a mounting groove; 24. a first chamfer; 41. a second chamfer; 51. a through hole; 52. a receiving groove; 61. a locking ring; 71. a spring; 72. spring seat.
Detailed Description
The following description of the embodiments of the present utility model will be made more complete in view of the accompanying drawings, in which it is to be understood that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
Example 1
Referring to fig. 1-4, the zero leakage valve sealing structure provided in this embodiment includes a valve body 1, a sealing assembly 2, a lock nut 3 and a valve core 4, a channel 11 is provided on the valve body 1, and an inner cavity 12 is provided in the valve body 1; the sealing component 2 is arranged in the inner cavity 12, and the sealing component 2 is annular and arranged outside the channel 11; the lock nut 3 is arranged in the inner cavity 12 and is in threaded connection with the inner wall of the inner cavity 12 and used for compressing the sealing assembly 2; the valve core 4 is slidably arranged in the inner cavity 12, the valve core 4 is arranged opposite to the channel 11, and the outer diameter of the valve core 4 is larger than the inner diameter of the sealing assembly 2.
Through the structure, in practical application, by adopting the zero-leakage valve sealing structure provided by the embodiment of the utility model, the locking nut 3 is in threaded connection with the inner wall of the inner cavity 12 to tightly press the sealing component 2, the sealing component 2 is tightly pressed in the inner cavity 12 and is positioned outside the channel 11, when the valve core 4 slides in the inner cavity 12 and is far away from the sealing component 2, the channel 11 is opened, the valve sealing structure is in an open state, when the valve core 4 slides in the inner cavity 12 to be close to the sealing component 2 and is abutted on the sealing component 2, the channel 11 is closed, the valve sealing structure is in a closed state, and the locking nut 3 can tightly press the sealing component 2, so that the sealing effect when the valve core 4 is abutted on the sealing component 2 is better, zero leakage can be realized, the installation mode of the sealing component 2 is simple, and the structure is reliable.
Specifically, the zero leakage valve sealing structure further comprises a base 5, the base 5 is arranged in the inner cavity 12, a through hole 51 communicated with the channel 11 is formed in the base 5, the sealing assembly 2 is arranged on the base 5, the base 5 is used for installing the sealing assembly 2, a good supporting effect can be given to the sealing assembly 2, the position of the sealing assembly 2 is more stable, and therefore the valve core 4 is enabled to have a good sealing effect when being abutted to the sealing assembly 2.
Specifically, be equipped with holding groove 52 near the one end of case 4 on base 5, seal assembly 2 locates in holding groove 52, and holding groove 52 is used for holding seal assembly 2, can play better spacing effect to seal assembly 2, prevents that seal assembly 2's position from appearing the skew.
Specifically, the width of seal assembly 2 is greater than the width of holding groove 52, and seal assembly 2 highly is greater than the height of holding groove 52, so can guarantee that seal assembly 2 is in by the extrusion state in holding groove 52, seal assembly 2 has certain compression, can guarantee seal assembly 2 and the sealed effect between base 5 and the valve body 1 to further guarantee the sealed effect when case 4 and seal assembly 2 butt.
Specifically, the sealing assembly 2 comprises a sealing ring 21 and an O-shaped ring 22, the valve core 4 is abutted on the sealing ring 21, a mounting groove 23 is formed in one end, away from the valve core 4, of the sealing ring 21, the O-shaped ring 22 is arranged in the mounting groove 23, and the sealing assembly 2 is formed by the sealing ring 21 and the O-shaped ring 22 together, so that the structure is reliable. Easy assembly, good sealing performance, and the existence of the O-shaped ring 22 can avoid the situation that the sealing ring 21 is broken due to the fact that the locking nut 3 excessively compresses the sealing ring 21.
Specifically, the cross section of the sealing ring 21 is in an inverted L shape, the mounting groove 23 is positioned on the outer side of one end, away from the valve core 4, of the sealing ring 21, the O-shaped ring 22 is arranged in the mounting groove, the O-shaped ring 22 can be pressed by the sealing ring 21, and then after the locking nut 3 is in threaded connection with the inner wall of the inner cavity 12, the sealing ring 21 and the O-shaped ring 22 can be completely fixed.
Specifically, the diameter of the O-ring 22 is smaller than the diameter of the mounting groove 23, so that a certain compression amount of the O-ring 22 in the radial direction can be ensured after the O-ring 22 is sleeved in the mounting groove 23; meanwhile, the width of the section of the O-shaped ring 22 is larger than that of the section of the mounting groove 23, and the height of the section of the O-shaped ring 22 is larger than that of the section of the mounting groove 23, so that a certain compression amount of the O-shaped ring 22 in the axial direction can be ensured after the O-shaped ring 22 is sleeved in the mounting groove 23, and the stability of the sealing assembly 2 and the sealing effect between the sealing assembly 2 and the base 5 and the valve body 1 are ensured.
Preferably, the compression amount of the O-shaped ring 22 in the radial direction is not less than 30%, and the compression amount of the O-shaped ring 22 in the axial direction is not less than 30%, so that good sealing performance is ensured between the O-shaped ring 22 and the sealing ring 21, and between the valve body 1 and the base 5.
Specifically, the inner wall of the sealing ring 21, which is close to one end of the valve core 4, is provided with a first chamfer 24, the outer wall of the valve core 4, which is close to one end of the sealing ring 21, is provided with a second chamfer 41, and the second chamfer 41 is abutted against the first chamfer 24, so that the valve core 4 is abutted against the sealing ring 21, the sealing of the channel 11 is realized, and the valve sealing structure is in a closed state.
Specifically, the angles of the first chamfer 24 and the second chamfer 41 are the same, and the length of the first chamfer 24 is smaller than that of the second chamfer 41, so that the first chamfer 24 and the second chamfer 41 can be completely attached, and the tightness of the first chamfer 24 and the second chamfer 41 when attached can be improved.
Preferably, the angles of the first chamfer 24 and the second chamfer 41 are 30 degrees, and the roughness of the first chamfer 24 and the second chamfer 41 is not smaller than Ra0.8, so that good sealing effect can be ensured when the first chamfer 24 and the second chamfer 41 are abutted against each other.
Example 2
Referring to fig. 1-4, the valve provided in this embodiment includes a zero leakage valve sealing structure as in embodiment 1, and further includes a valve cover 8, a guide sleeve 6, and an elastic component 7, wherein one end of the guide sleeve 6 is sleeved in the valve body 1 and is in threaded connection with the valve body 1, the other end of the guide sleeve 6 is sleeved in the valve cover 8 and is fixed by a locking ring 61, the valve core 4 is slidably disposed in the guide sleeve 6, the guide sleeve 6 is used for providing guiding action for movement of the valve core 4, one end of the elastic component 7 abuts against the valve core 4, the other end abuts against the valve cover 8, the guide sleeve 6 and the valve body 1 are fixed, and the elastic component 7 is located between the valve core 4 and the valve cover 8, so that the valve core 4 and the sealing component 2 can be tightly attached by providing elastic force for the valve core 4.
Specifically, the elastic assembly 7 includes a spring 71 and a spring seat 72 connected to one end of the spring, the other end of the spring 71 abuts against the valve cover 8 to provide an elastic force, the spring seat 72 contacts the valve core 4, and the spring 71 provides the spring seat 72 with an elastic force to push the valve core 4, so that the valve core 4 moves towards the sealing assembly 2.
While the utility model has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.
Claims (10)
1. A zero leakage valve seal structure, comprising:
the valve body is provided with a channel, and an inner cavity is formed in the valve body;
The sealing component is arranged in the inner cavity, is annular and is arranged at the outer side of the channel;
the lock nut is arranged in the inner cavity, is in threaded connection with the inner wall of the inner cavity and is used for compressing the sealing assembly;
The valve core is arranged in the inner cavity in a sliding manner, the valve core is arranged opposite to the channel, and the outer diameter of the valve core is larger than the inner diameter of the sealing assembly.
2. The zero-leakage valve sealing structure according to claim 1, further comprising a base, wherein the base is disposed in the inner cavity, a through hole is formed in the base and is communicated with the channel, and the sealing assembly is disposed on the base.
3. The zero-leakage valve sealing structure according to claim 2, wherein a containing groove is formed in one end, close to the valve core, of the base, and the sealing assembly is arranged in the containing groove.
4. A zero leakage valve seal structure according to claim 3, wherein the width of the seal assembly is greater than the width of the receiving groove and the height of the seal assembly is greater than the height of the receiving groove.
5. The zero-leakage valve sealing structure according to claim 1, wherein the sealing assembly comprises a sealing ring and an O-ring, the valve core is abutted against the sealing ring, a mounting groove is formed in one end, away from the valve core, of the sealing ring, and the O-ring is arranged in the mounting groove.
6. The zero-leakage valve sealing structure according to claim 5, wherein the cross section of the sealing ring is in an inverted L shape, and the mounting groove is located on the outer side of one end of the sealing ring, which is away from the valve core.
7. The zero leakage valve seal structure of claim 6, wherein the O-ring has a diameter smaller than the diameter of the mounting groove, the O-ring cross-section has a width greater than the width of the mounting groove cross-section, and the O-ring cross-section has a height greater than the height of the mounting groove cross-section.
8. The zero-leakage valve sealing structure according to claim 7, wherein a first chamfer is arranged on an inner wall of the sealing ring, which is close to one end of the valve core, and a second chamfer is arranged on an outer wall of the valve core, which is close to one end of the sealing ring, and the second chamfer is abutted against the first chamfer.
9. The zero-leakage valve seal structure of claim 8, wherein the first chamfer and the second chamfer are at the same angle and the length of the first chamfer is less than the length of the second chamfer.
10. A valve, characterized by comprising the zero leakage valve sealing structure according to any one of claims 1-9, and further comprising a valve cover, a guide sleeve and an elastic component, wherein one end of the guide sleeve is sleeved in the valve body, the other end of the guide sleeve is sleeved in the valve cover, the valve core is slidably arranged in the guide sleeve, one end of the elastic component is abutted to the valve core, and the other end of the elastic component is abutted to the valve cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323582274.XU CN221547863U (en) | 2023-12-27 | 2023-12-27 | Zero leakage valve sealing structure and valve with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323582274.XU CN221547863U (en) | 2023-12-27 | 2023-12-27 | Zero leakage valve sealing structure and valve with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221547863U true CN221547863U (en) | 2024-08-16 |
Family
ID=92259605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323582274.XU Active CN221547863U (en) | 2023-12-27 | 2023-12-27 | Zero leakage valve sealing structure and valve with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221547863U (en) |
-
2023
- 2023-12-27 CN CN202323582274.XU patent/CN221547863U/en active Active
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