CN215928444U - High-pressure valve for preventing filler leakage - Google Patents
High-pressure valve for preventing filler leakage Download PDFInfo
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- CN215928444U CN215928444U CN202121197006.4U CN202121197006U CN215928444U CN 215928444 U CN215928444 U CN 215928444U CN 202121197006 U CN202121197006 U CN 202121197006U CN 215928444 U CN215928444 U CN 215928444U
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- packing
- valve rod
- gland
- valve
- pressure valve
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Abstract
The utility model discloses a high-pressure valve for preventing packing leakage, which comprises a valve body, a valve rod and a gland, wherein the gland is sleeved on the valve rod and is connected with the valve body through a locking bolt, a packing box is arranged between the gland and the valve rod, a packing pressing plate is arranged on the valve rod above the packing box and is connected with the gland through a loose joint bolt, V-shaped packing is filled in the packing box and is provided with a plurality of layers, and the side wall of the valve rod is provided with a polishing layer which is in sliding seal with the V-shaped packing. According to the utility model, the packing of the high-pressure valve is replaced by the V-shaped packing, the compression amount is larger, the compensation amount is sufficient, the gap between the valve rod and the packing box can be better sealed by the V-shaped packing during pre-tightening, and the polishing layer is additionally arranged on the surface of the valve rod, so that sundries are not easy to adhere to the surface of the valve rod, the packing is not damaged in the operation process, and the good sealing property of the packing is ensured.
Description
Technical Field
The utility model relates to a stuffing box, in particular to a high-pressure valve for preventing stuffing from leaking.
Background
The stuffing box is used as a sealing device for blocking a leakage passage by stuffing, is applied to a contact type dynamic sealing position in reciprocating or rotating motion, can prevent gas, liquid materials and the like from leaking, and is divided into soft stuffing sealing and hard stuffing sealing.
Because the packing that current high-pressure valve used is square packing, the compressive capacity of square packing is little, and the compensation volume of packing is not enough when using for a long time, appears leaking easily, and moreover, valve rod smooth finish is not enough or there is the debris of adhesion on the valve rod surface after using for a long time, and in operation process, the valve rod produces great damage to the packing, can lead to the sealed inefficacy of packing to can make the packing box appear leaking, it is big to appear leaking the back on-line treatment degree of difficulty, and the leaking stoppage effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of the prior art and provides a high-pressure valve which is reasonable in design and reduces the leakage probability of a high-pressure valve filler.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the high-pressure valve capable of preventing packing leakage comprises a valve body, a valve rod and a gland, wherein the gland sleeve is connected with the valve body through a locking bolt on the valve rod, a packing box is arranged between the gland and the valve rod, a packing pressing plate is arranged on the valve rod above the packing box and is connected with the gland through a loose joint bolt, the high-pressure valve is characterized in that V-shaped packing is filled in the packing box, a plurality of layers of V-shaped packing are arranged along the axis direction of the valve rod, and a polishing layer in sliding sealing with the V-shaped packing is arranged on the side wall of the valve rod.
The technical problem to be solved by the utility model can also be solved by the following technical scheme that the opening directions of the V-shaped fillers are arranged in the same direction.
The technical problem to be solved by the utility model can be realized by the following technical scheme that the opening directions of the V-shaped fillers of the adjacent layers are reversely arranged.
The technical problem to be solved by the utility model can also be realized by the following technical scheme that a first belleville spring is arranged on a loose joint bolt between the packing pressing plate and the gland, and 3-7 pieces of the first belleville spring are arranged, so that the compression degree of the packing pressing plate on the V-shaped packing is conveniently adjusted.
The technical problem to be solved by the utility model can also be realized by the following technical scheme that a second belleville spring is arranged on the locking bolt between the gland and the valve body.
The technical problem to be solved by the utility model can also be realized by adopting the following technical scheme that the loose joint bolt is a lengthened loose joint bolt.
Compared with the prior art, the utility model has the following technical effects:
firstly, the packing of the high-pressure valve is replaced by V-shaped packing, the compression amount of the V-shaped packing is large, sufficient compensation amount is provided, and the V-shaped packing can better seal a gap between a valve rod and a packing box during pre-tightening;
and secondly, the polishing layer is additionally arranged on the surface of the valve rod, so that the surface of the valve rod is not easy to adhere to impurities, the filler is not damaged in the operation process, the good sealing performance of the filler is ensured, and meanwhile, the V-shaped filler is in sliding fit with the V-shaped filler, so that the impurities are further prevented from being adsorbed on the valve rod.
By adopting the high-pressure valve, the probability of leakage of the high-pressure valve in the postmeal box is reduced, and the operation risk of leveling of the high-pressure valve due to valve leakage in the operation process of the high-pressure valve during the starting and stopping of the device is also reduced.
Drawings
Fig. 1 is a structural view of a high pressure valve according to the present invention.
In the figure: 1-valve body, 2-gland, 3-second belleville spring, 4-valve rod, 5-V type packing, 6-loose joint bolt, 7-packing press plate, 8-first belleville spring, 9-packing box and 10-locking bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, a high pressure valve for preventing packing leakage comprises a valve body 1, a valve rod 4 and a gland 3, wherein the gland 3 is sleeved on the valve rod 4 and is connected with the valve body 1 through a locking bolt 10, a packing box 9 is arranged between the gland 2 and the valve rod 1, a packing pressure plate 7 is arranged on the valve rod 4 above the packing box 9, the packing pressure plate 7 is connected with the gland 2 through a loose joint bolt 6, the loose joint bolt 6 adopts an elongated loose joint bolt, a V-shaped packing 5 is filled in the packing box 9, a plurality of layers of V-shaped packing 5 are arranged along the axial direction of the valve rod, a polishing layer matched with the V-shaped packing 5 is arranged on the side wall of the valve rod 4 in the packing box 9,
a first butterfly spring 8 is arranged on a loose joint bolt 6 between the packing press plate 7 and the gland 2, the first butterfly spring 8 is provided with 3-7 pieces, the compression force of the packing press plate on the V-shaped packing is convenient to adjust, a second butterfly spring 3 is arranged on a locking bolt 10 between the gland 2 and the valve body 1, and the second butterfly spring 3 is provided with 2-4 pieces.
In the operation process, the V-shaped packing 5 can better seal the gap between the valve rod and the packing box under the pre-tightening action force of the packing pressing plate. When the opening directions of the multiple layers of V-shaped packing 5 are all arranged towards one direction, such as downwards or upwards, the side edges of the V-shaped packing 5 are in sliding fit with the valve rod polishing layer, so that the sealing of the valve rod is ensured, and FIG. 1 is a schematic diagram of the V-shaped packing arranged in the same direction; when the opening directions of the V-shaped packing 5 of the adjacent layers are reversely arranged, the compression amount and the rebound amount of the V-shaped packing are improved, the compensation amount of the packing is further increased, and a better sealing effect is obtained between the packing box 9 and the valve rod 4. Therefore, the arrangement direction of the V-shaped packing in the high-pressure valve is preferably arranged in an adjacent reverse direction.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a prevent high-pressure valve of packing leakage, includes valve body, valve rod and gland, and the gland cover meets with the valve body through locking bolt on the valve rod be equipped with the stuffing box between gland and the valve rod, installs the packing clamp plate on the valve rod of stuffing box top, and the packing clamp plate meets with the gland through the loose joint bolt, its characterized in that the packing box intussuseption is filled with V type packing, and V type packing is equipped with a plurality of layers along the axis direction of valve rod, is equipped with on the valve rod lateral wall with V type packing sliding seal's polishing layer.
2. The high pressure valve for preventing packing leakage of claim 1, wherein the opening directions of the V-shaped packing are arranged in the same direction.
3. The high pressure valve for preventing packing leakage of claim 1, wherein the opening directions of the V-shaped packings of adjacent layers are reversed.
4. The high pressure valve for preventing packing leakage of claim 1, wherein a first belleville spring is installed on the loose joint bolt between the packing press plate and the gland.
5. The high pressure valve for preventing packing leakage of claim 4, wherein the first belleville spring is provided with 3-7 pieces.
6. The high pressure valve for preventing packing leakage of claim 1, wherein a second belleville spring is installed on the locking bolt between the gland and the valve body.
7. The high pressure valve for preventing packing leakage of claim 1, wherein the loose joint bolt is an elongated loose joint bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121197006.4U CN215928444U (en) | 2021-05-31 | 2021-05-31 | High-pressure valve for preventing filler leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121197006.4U CN215928444U (en) | 2021-05-31 | 2021-05-31 | High-pressure valve for preventing filler leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215928444U true CN215928444U (en) | 2022-03-01 |
Family
ID=80402658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121197006.4U Active CN215928444U (en) | 2021-05-31 | 2021-05-31 | High-pressure valve for preventing filler leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215928444U (en) |
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2021
- 2021-05-31 CN CN202121197006.4U patent/CN215928444U/en active Active
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