CN216715383U - Combined packing structure for valve - Google Patents
Combined packing structure for valve Download PDFInfo
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- CN216715383U CN216715383U CN202123199599.0U CN202123199599U CN216715383U CN 216715383 U CN216715383 U CN 216715383U CN 202123199599 U CN202123199599 U CN 202123199599U CN 216715383 U CN216715383 U CN 216715383U
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- packing structure
- packing
- elastic ring
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Abstract
The utility model provides a combined packing structure for a valve, wherein a packing mechanism is arranged in the valve, the packing structure is used for sealing the valve, and the packing structure comprises: the rigid ring is sleeved outside the valve rod of the valve; the elastic ring is sleeved outside the rigid ring; the first end surface of the elastic ring is provided with an annular groove; the annular ring is used for the cover to extrude the cell wall of ring channel in the ring channel and to the periphery to make the elastic ring by outside periphery extrusion and external diameter grow, so that the lateral wall of elastic ring and valve inside wall are hugged closely and are realized sealing, and the inside wall of elastic ring and the lateral wall of valve rod are hugged closely and are realized sealing. Adopt the combination packing structure for valve that this application provided, through setting up the rigidity circle, can effectual improvement packing structure's extrusion rigidity, it is inhomogeneous to avoid the elastic ring to warp, through setting up supporting annular ring and elastic ring, can make the elastic ring be the regular towards outside expansion to improve packing structure to the sealing performance of valve.
Description
Technical Field
The utility model relates to the technical field of valve sealing, in particular to a combined packing structure for a valve.
Background
The sealing performance of the valve rod packing is one of the main indexes of the performance of the whole valve, and the tightness directly determines whether the valve has external leakage. According to different working conditions, a proper packing material is selected, the depth of a packing box is reasonably designed, and a reasonable packing sealing structure and a reasonable installation mode are adopted, so that a good valve rod sealing effect can be achieved.
The existing packing structure is characterized in that a sealing gasket is arranged between a valve rod and a valve, the sealing gasket is extruded between the outer wall of the valve rod and the inner side wall of the valve through external force, however, when the sealing gasket is subjected to the external force, the deformation direction of the sealing gasket cannot be controlled, and the sealing effect of the sealing gasket on the valve is poor.
Therefore, there is a need to provide a combined packing structure for a valve to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a combined packing structure for a valve.
The utility model provides a combined packing structure for a valve, which is arranged in the valve and used for sealing the valve, and comprises:
the rigid ring is sleeved outside the valve rod of the valve;
the elastic ring is sleeved outside the rigid ring; an annular groove is formed in the first end face of the elastic ring;
the annular ring, the annular ring is used for the cover to extrude to the periphery in the ring channel the cell wall of ring channel, thereby makes the elastic ring is extruded and the external diameter grow by periphery to make the lateral wall of elastic ring and valve inside wall hug closely and realize sealing, the inside wall of elastic ring with the lateral wall of valve rod is hugged closely and is realized sealing.
Further, the method also comprises the following steps:
the packing pressing plate is sleeved on the outer side of the valve rod, and the valve rod is movably connected with the packing pressing plate; the packing pressing plate is used for pressing the packing structure in the valve.
Furthermore, the packing pressing plate is detachably connected with the valve.
Furthermore, an inner side wall of an opening of the valve is provided with an internal thread, an outer side wall of the packing pressing plate is provided with an external thread, and the internal thread is in threaded connection with the external thread in a matching manner; the bottom of the packing press plate is in press joint with the top of the rigid ring.
Further, the packing device further comprises a gasket, and the gasket is arranged between the packing pressure plate and the rigid ring.
Furthermore, the rigid ring is made of metal.
Furthermore, the elastic ring is made of rubber.
Furthermore, the annular ring is made of polytetrafluoroethylene.
Furthermore, the elastic ring is connected to the outer side of the rigid ring in a plastic mode.
Further, the annular groove is concentrically arranged with the elastic ring.
Compared with the related art, the combined packing structure for the valve provided by the utility model has the following beneficial effects:
the utility model provides a combined packing structure for a valve, which is arranged in the valve and used for sealing the valve, and comprises: the rigid ring is sleeved outside the valve rod of the valve; the elastic ring is sleeved outside the rigid ring; an annular groove is formed in the first end face of the elastic ring; the annular ring is used for being sleeved in the annular groove and extruding the groove wall of the annular groove towards the outer periphery, so that the elastic ring is extruded towards the outer periphery and the outer diameter is enlarged, the outer side wall of the elastic ring is tightly attached to the inner side wall of the valve to realize sealing, and the inner side wall of the elastic ring is tightly attached to the outer side wall of the valve rod to realize sealing. The packing structure that provides with this scheme installs in the valve, presses down and moves the packing structure for the annular ring of packing structure moves towards the inside of recess, and under the extrusion of annular ring, the elastic ring part that two lateral walls of recess correspond moves towards the inside wall of valve and the lateral wall direction of valve rod respectively, makes the lateral wall of elastic ring and valve inside wall hug closely the realization sealed, the inside wall of elastic ring with the realization is sealed is hugged closely to the lateral wall of valve rod. Adopt the combination packing structure for valve that this application provided, through setting up the rigidity circle, can effectual improvement packing structure's extrusion rigidity, it is inhomogeneous to avoid the elastic ring to warp, through setting up supporting annular ring and elastic ring, can make the elastic ring be the regular towards outside expansion to improve packing structure to the sealing performance of valve.
Drawings
FIG. 1 is a schematic structural diagram of a combined packing structure for a valve according to the present invention;
FIG. 2 is a schematic disassembled view of FIG. 1;
FIG. 3 is a schematic view of an assembly structure provided by the present invention;
FIG. 4 is a schematic structural view of a valve provided in the present invention;
fig. 5 is a schematic structural diagram of a packing press plate provided by the present invention.
The reference numbers in the figures: 1. a rigid ring; 2. an elastic ring; 3. an annular groove; 4. an annular ring; 5. a packing press plate; 6. a valve; 7. a valve stem; 8. an internal thread; 9. and (4) external threads.
Detailed Description
The utility model is further described with reference to the following figures and embodiments.
Referring to fig. 1 to 5, the present invention provides a combined packing structure for a valve, the packing structure is disposed in a valve 6, the packing structure is used for sealing the valve 6, and the packing structure includes: the rigid ring 1 is sleeved outside a valve rod 7 of the valve 6; the elastic ring 2 is sleeved on the outer side of the rigid ring 1; an annular groove 3 is formed in the first end face of the elastic ring 2; the annular ring 4 is used for being sleeved in the annular groove 3 and extruding the groove wall of the annular groove 3 towards the outer periphery, so that the elastic ring 2 is extruded towards the outer periphery, the outer diameter of the elastic ring is increased, the outer side wall of the elastic ring 2 is tightly attached to the inner side wall of the valve 6 to realize sealing, and the inner side wall of the elastic ring 2 is tightly attached to the outer side wall of the valve rod 7 to realize sealing.
Specifically, the valve 6 may be a high-pressure valve 6 or a common low-pressure valve 6, the type and type of the valve 6 are not limited in this embodiment, the rigid ring 1 may be made of a metal with a certain strength, such as steel or stainless steel, or may be made of another material with rigidity, such as high-strength PVC, and the material of the rigid ring 1 is not limited in this embodiment. The rigid ring 1 may be a hollow cylinder, and the diameter of the inner hole of the rigid ring 1 needs to be larger than the outer diameter of the valve rod 7, so that the valve rod 7 can penetrate through the inner ring of the rigid ring 1, thereby ensuring that the valve rod 7 can smoothly close or open the valve body.
Specifically, the material of the elastic ring 2 may be a wear-resistant rubber material, such as nitrile rubber, fluorocarbon rubber, etc., the present scheme does not limit the material of the elastic ring 2, and the connection manner between the elastic ring 2 and the rigid ring 1 may be plastic connection or insert connection, that is, the inner diameter of the elastic ring 2 is smaller than the outer diameter of the rigid ring 1 after molding.
Specifically, the annular groove 3 is formed at an end of the elastic ring 2, and as a preferred embodiment, the annular groove 3 may be concentrically formed at the end of the elastic ring 2, that is, a center of a circle where the annular groove 3 is located and a center of a circle where the elastic ring 2 is located are a same center.
Specifically, in order to ensure that the annular ring 4 can spread the annular groove 3 on the elastic ring 2, and further, one side wall of the elastic ring 2 can be close to the inner side wall of the valve 6, and the other side wall can be close to the side wall of the valve rod 7, the cross-sectional diameter of the annular ring 4 needs to be set to a size larger than the width of the annular groove 3, for example, the width of the annular groove is 5cm, the diameter of the cross section of the annular ring 4 can be set to 6cm, 7cm, 8cm, etc., and with the above-mentioned setting, when the annular ring 4 is pressed in the direction of the bottom of the annular groove 3, the annular ring 4 may press the groove wall of said annular groove 3 within the annular groove 3 and towards the outer periphery, therefore, the elastic ring 2 is extruded towards the outer periphery, the outer diameter is increased, the outer side wall of the elastic ring 2 is tightly attached to the inner side wall of the valve 6 to realize sealing, and the inner side wall of the elastic ring 2 is tightly attached to the outer side wall of the valve rod 7 to realize sealing.
Specifically, in actual assembling process, can establish the outside at valve rod 7 with the structure cover that packs that this scheme provided to through supplementary mounting with the fixed extrusion of above-mentioned structure that packs in valve 6's inside, the space between the structure that packs up to this scheme is sealed with valve 6 and valve rod 7. Install the packing structure that this scheme provided in valve 6, press down and move the packing structure for packing structure's annular ring 4 removes towards the inside of recess, and under annular ring 4's squeezing action, 2 parts of the elastic ring that two lateral walls of recess correspond move towards the inside wall of valve 6 and the lateral wall direction of valve rod 7 respectively, make the lateral wall of elastic ring 2 and 6 inside walls of valve hug closely the realization sealed, the inside wall of elastic ring 2 with the realization is sealed is hugged closely to the lateral wall of valve rod 7. Adopt the combination packing structure for valve that this application provided, through setting up rigidity circle 1, can effectual improvement packing structure's extrusion rigidity, avoid elastic ring 2 to warp inhomogeneous, through setting up supporting annular ring 4 and elastic ring 2, can make elastic ring 2 be the regular towards outside expansion to improve packing structure to the sealing performance of valve 6.
In an embodiment, please refer to fig. 3, fig. 4, and fig. 5, which further includes: the packing pressing plate 5 is sleeved on the outer side of the valve rod 7, and the valve rod 7 is movably connected with the packing pressing plate 5; the packing press plate 5 is used to crimp the packing structure inside the valve 6.
Specifically, threaded connection can be adopted to the connected mode of above-mentioned packing clamp plate 5 and valve 6, for example, set up internal thread 8 on the inside wall of the opening part of valve 6, set up external screw thread 9 on the lateral wall of packing clamp plate 5, with packing clamp plate 5 through above-mentioned external screw thread 9 with internal screw thread 8 cooperation spiro union on valve 6 can, in the assembling process, along with above-mentioned packing clamp plate 5 gets into valve 6 inside part big more, packing clamp plate 5 is big more to the extrusion power of rigid ring 1 in the packing structure, the part that annular ring 4 got into ring channel 3 this moment is more, the opening distance of elastic ring 2 is big more, elastic ring 2 is better to the space sealing performance between valve rod 7 and the valve 6.
In one embodiment, the packing press plate 5 is removably attached to the valve 6. The detachable connection mode is adopted, so that the packing structure can be conveniently taken out from the interior of the valve 6 when the packing structure is damaged or needs to be maintained.
In one specific embodiment, an inner thread 8 is arranged on the inner side wall of the opening of the valve 6, an outer thread 9 is arranged on the outer side wall of the packing press plate 5, and the inner thread 8 is in threaded connection with the outer thread 9 in a matching manner; the bottom of the packing press plate 5 is pressed on the top of the rigid ring 1.
In a specific embodiment, the packing device further comprises a gasket, and the gasket is arranged between the packing press plate 5 and the rigid ring 1. Set up the packing ring, at the in-process of twisting above-mentioned packing clamp plate 5, packing clamp plate 5's bottom does not enclose 1 top direct contact with the rigidity, and then reduces packing clamp plate 5 and enclose 1 tip's wearing and tearing to the life of extension rigidity circle 1, and then the life of extension filler structure.
In one embodiment, the rigid ring 1 is made of metal.
In one embodiment, the elastic ring 2 is made of rubber.
In one embodiment, the annular ring 4 is made of teflon.
In one embodiment, the elastic ring 2 is molded on the outer side of the rigid ring 1.
In one embodiment, the annular groove 3 is arranged concentrically with the elastic ring 2.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A composite packing structure for a valve, the packing structure being arranged in a valve (6) for sealing the valve (6), characterized in that the packing structure comprises:
the rigid ring (1), the rigid ring (1) is sleeved outside the valve rod (7) of the valve (6);
the elastic ring (2) is sleeved on the outer side of the rigid ring (1); an annular groove (3) is formed in the first end face of the elastic ring (2);
annular ring (4), annular ring (4) are used for the cover to extrude in annular groove (3) and to the periphery the cell wall of annular groove (3), thereby make elastic ring (2) are extruded and the external diameter grow to the periphery to the lateral wall that makes elastic ring (2) is hugged closely with valve (6) inside wall and is realized sealing, the inside wall of elastic ring (2) with the realization is sealed is hugged closely to the lateral wall of valve rod (7).
2. The unitized packing structure for a valve, according to claim 1, further comprising:
the packing pressing plate (5) is sleeved on the outer side of the valve rod (7), and the valve rod (7) is movably connected with the packing pressing plate (5); the packing pressure plate (5) is used for crimping the packing structure inside the valve (6).
3. The composite packing structure for valves according to claim 2, characterized in that the packing press plate (5) is detachably connected to the valve (6).
4. A unitized packing structure for a valve according to claim 2 or 3,
an internal thread (8) is formed in the inner side wall of the opening of the valve (6), an external thread (9) is formed in the outer side wall of the packing pressing plate (5), and the internal thread (8) is matched and screwed with the external thread (9); the bottom of the packing pressing plate (5) is in press joint with the top of the rigid ring (1).
5. A combined packing structure for valves according to claim 2, characterized by further comprising a gasket disposed between the packing press plate (5) and the rigid ring (1).
6. The combined packing structure for the valve according to claim 1, wherein the rigid ring (1) is made of metal.
7. The combined packing structure for the valve according to claim 1, wherein the elastic ring (2) is made of rubber.
8. The combined packing structure for the valve according to claim 1, characterized in that the material of the annular ring (4) is polytetrafluoroethylene.
9. The packing structure of claim 1, characterized in that the elastic ring (2) is molded on the outside of the rigid ring (1).
10. A composite packing structure for valves according to claim 1, characterized in that said annular groove (3) is arranged concentrically with said elastic ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123199599.0U CN216715383U (en) | 2021-12-20 | 2021-12-20 | Combined packing structure for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123199599.0U CN216715383U (en) | 2021-12-20 | 2021-12-20 | Combined packing structure for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216715383U true CN216715383U (en) | 2022-06-10 |
Family
ID=81884175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123199599.0U Active CN216715383U (en) | 2021-12-20 | 2021-12-20 | Combined packing structure for valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216715383U (en) |
-
2021
- 2021-12-20 CN CN202123199599.0U patent/CN216715383U/en active Active
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