CN220850808U - High leakproofness fire prevention soft seal gate valve - Google Patents
High leakproofness fire prevention soft seal gate valve Download PDFInfo
- Publication number
- CN220850808U CN220850808U CN202322794653.9U CN202322794653U CN220850808U CN 220850808 U CN220850808 U CN 220850808U CN 202322794653 U CN202322794653 U CN 202322794653U CN 220850808 U CN220850808 U CN 220850808U
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- CN
- China
- Prior art keywords
- valve
- filler
- packing
- valve body
- tightness
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- 230000002265 prevention Effects 0.000 title claims description 4
- 238000007789 sealing Methods 0.000 claims abstract description 39
- 239000000945 filler Substances 0.000 claims abstract description 36
- 230000000903 blocking effect Effects 0.000 claims abstract 2
- 238000012856 packing Methods 0.000 claims description 44
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 239000007770 graphite material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 239000002360 explosive Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The utility model discloses a high-tightness fireproof soft sealing gate valve, which relates to the technical field of valves and comprises a valve body, wherein the valve body is provided with a medium flow channel, a valve seat is arranged in the medium flow channel, a valve cover is arranged on the valve body, a flashboard is arranged in the valve body, the flashboard is provided with a sealing surface which is in sealing fit with the valve seat, the upper end of the flashboard is connected with a valve shaft, the upper end of the valve shaft penetrates out of the valve cover and is connected with a hand wheel, a filler assembly is arranged between the valve shaft and the valve cover, the filler assembly comprises a first filler and a second filler, a first filler pressing plate for blocking is arranged between the first filler and the second filler, a second filler pressing plate for pressing the filler is arranged at the upper end of the second filler, a filler pressing sleeve is arranged at the upper end of the second filler pressing plate, and the filler pressing sleeve is fastened through a loose joint bolt nut. The utility model adopts double-filler independent sealing, and can still be in a good sealing state under abnormal conditions such as fire disaster and the like.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a high-tightness fireproof soft sealing gate valve.
Background
The gate valve is a valve with a gate plate, the moving direction of which is perpendicular to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be regulated and throttled. The gate valve mainly used in petroleum, petrochemical, electric power, hydraulic engineering and other engineering industries mainly comprises a valve body, a flashboard, a valve shaft, a valve cover, a support and a driving system, wherein a single-filler sealing structure is often adopted for sealing between the valve shaft and the valve cover, so that the leakage amount of the valve used under the medium working conditions such as poisonous and harmful, corrosive, inflammable and explosive or high-cleanness needs to be strictly controlled, the leakage amount of the existing gate valve is not in accordance with the requirement in the use scene, and when the emergency such as fire occurs, the medium leakage can generate potential safety hazards, thereby influencing the production and even threatening the life.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a high-tightness fireproof soft sealing gate valve.
The technical scheme provided by the utility model is as follows:
The utility model provides a high leakproofness fire prevention soft seal gate valve, includes the valve body, the valve body is equipped with the medium runner, be equipped with the disk seat in the medium runner, be equipped with the valve gap on the valve body, be equipped with the flashboard in the valve body, the flashboard is equipped with and constitutes sealed complex sealed face with the disk seat, the valve shaft is connected to the flashboard upper end, the valve shaft upper end is worn out the valve gap and is connected with the hand wheel, be equipped with the packing subassembly between valve shaft and the valve gap, the packing subassembly includes first packing, second packing, be equipped with the first packing clamp plate that is used for the separation between first packing and the second packing, second packing upper end is equipped with the second packing clamp plate that is used for compressing tightly the packing, second packing clamp plate upper end is equipped with the packing and presses the cover, the packing is pressed the cover and is fastened through loose joint bolt nut.
And a disc spring is arranged between the packing pressing sleeve and the loose joint bolt and nut.
The first filler is clean plastic V-shaped filler, and the second filler is flexible graphite filler.
The valve body upper end is equipped with the connecting hole, the valve gap corresponds the connecting hole and is equipped with the bellying, the bellying is spacing in the connecting hole when valve gap and valve body are connected, be equipped with first gasket between bellying and the connecting hole bottom.
And a second gasket is arranged between the valve body and the valve cover at the outer side of the connecting hole.
The first gasket is made of clean plastic materials, the second gasket is made of stainless steel wound graphite materials, and the second gasket can be independently sealed.
The flashboard is provided with a groove corresponding to the valve seat, the groove is of a dovetail structure with a small bottom width opening, and a sealing block is embedded in the groove.
The valve seat is provided with a sealing surface, and the width of the sealing surface is larger than that of the groove opening.
The utility model has the beneficial effects that: the valve is characterized in that a valve cover is provided with a valve seat, a valve seat is arranged on the valve seat, a valve cover is arranged on the valve seat, a sealing plate is arranged between the valve cover and the valve seat, and a sealing plate is arranged between the valve cover and the valve seat.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model;
Fig. 2 is a partial enlarged view of fig. 1.
Detailed Description
Embodiments of the present utility model are further described below with reference to the accompanying drawings.
As shown in figures 1-2, the high-tightness fireproof soft sealing gate valve comprises a valve body 14, wherein the valve body 14 is provided with a medium flow passage 15, a valve seat 16 is arranged in the medium flow passage 15, a valve cover 11 is arranged on the valve body 14, a flashboard 17 is arranged in the valve body 14, the flashboard 17 is provided with a sealing surface which is in sealing fit with the valve seat 16, the upper end of the flashboard 17 is connected with a valve shaft 2, the upper end of the valve shaft 2 penetrates out of the valve cover 11 to be connected with a hand wheel 1, in the embodiment, a filler assembly is arranged between the valve shaft 2 and the valve cover 11, the filler assembly comprises a first filler 10 and a second filler 8, the first filler 10 is clean plastic V-shaped filler, the second filler 8 is flexible graphite filler, the first filler 10 is positioned at the lower end of the second filler 8, a first filler pressing plate 9 is arranged between the first filler 10 and the second filler 8, the first packing pressing plate 9 is used for separating the first packing 10 and the second packing 8, so that the double packing can be independently sealed, for toxic and harmful, corrosive, inflammable and explosive or high-cleanness and other mediums, the first packing 10 ensures that the medium is positioned in a clean cavity and is not in graphite contact with the second packing 8 above, pollution or leakage of the medium is effectively prevented, the second packing 8 enables the flashboard and the valve seat to be independently sealed under the condition of no sealing surface of the flashboard, the valve can still be in a good sealing state under abnormal conditions such as fire, the upper end of the second packing 8 is provided with the second packing pressing plate 6, the upper end of the second packing pressing plate 6 is provided with the packing pressing sleeve 5, the packing pressing sleeve 5 is fastened through the loose joint bolt nut 3, and sealing reliability is ensured.
In the embodiment, a disc spring 4 is arranged between the packing pressing sleeve 5 and the loose joint bolt nut 3, packing can be properly supplemented when packing loss occurs due to the fact that the disc spring is adopted for packing in a pre-tightening mode, and the service life of the valve is prolonged.
In this embodiment, the upper end of the valve body 14 is provided with the connecting hole 131, the valve cover 11 is provided with the protruding portion 132 corresponding to the connecting hole 131, when the valve cover 11 is connected with the valve body 14, the protruding portion 132 is limited in the connecting hole 131, a first gasket 13 is arranged between the protruding portion 132 and the bottom of the connecting hole 131, a second gasket 12 is arranged between the valve body 14 and the valve cover 11 outside the connecting hole 131, the first gasket 13 is made of clean plastic materials, the second gasket 12 is made of stainless steel winding graphite materials, the second gasket 12 can be independently sealed, and the sealing performance of the joint of the valve body and the valve cover is further improved.
In this embodiment, the gate 17 is provided with a groove 161 corresponding to the valve seat 16, the groove 161 has a dovetail structure with a small bottom width, the groove is embedded with a sealing block 18, the sealing block 18 is made of soft material, and the dovetail groove design ensures that the sealing block 18 is not loosened and keeps good sealing. Further, the valve seat 16 is provided with a sealing surface 161, the width of the sealing surface 161 is larger than the width of the opening of the groove 161, and when an abnormal condition such as damage to the sealing block 18 or fire occurs, the shutter 17 and the valve seat 16 still have steel sealing surfaces in contact and remain sealed.
The examples should not be construed as limiting the utility model, and any non-inventive modifications based on the spirit of the utility model should be regarded as being within the scope of the utility model.
Claims (8)
1. The utility model provides a high leakproofness fire prevention soft seal gate valve, includes the valve body, the valve body is equipped with the medium runner, be equipped with the disk seat in the medium runner, be equipped with the valve gap on the valve body, be equipped with the flashboard in the valve body, the flashboard is equipped with and constitutes sealed complex sealed face with the disk seat, the valve shaft is connected to the flashboard upper end, the valve gap is worn out to the valve shaft upper end and is connected its characterized in that with the hand wheel: the valve is characterized in that a packing assembly is arranged between the valve shaft and the valve cover, the packing assembly comprises a first packing and a second packing, a first packing pressing plate used for blocking is arranged between the first packing and the second packing, a second packing pressing plate used for pressing the packing is arranged at the upper end of the second packing, a packing pressing sleeve is arranged at the upper end of the second packing pressing plate, and the packing pressing sleeve is fastened through a loose joint bolt and a nut.
2. The high-tightness fireproof soft sealing gate valve according to claim 1, wherein: and a disc spring is arranged between the packing pressing sleeve and the loose joint bolt and nut.
3. The high-tightness fireproof soft sealing gate valve according to claim 1, wherein: the first filler is clean plastic V-shaped filler, and the second filler is flexible graphite filler.
4. The high-tightness fireproof soft sealing gate valve according to claim 1, wherein: the valve body upper end is equipped with the connecting hole, the valve gap corresponds the connecting hole and is equipped with the bellying, the bellying is spacing in the connecting hole when valve gap and valve body are connected, be equipped with first gasket between bellying and the connecting hole bottom.
5. The high-tightness fireproof soft sealing gate valve according to claim 4, wherein: and a second gasket is arranged between the valve body and the valve cover at the outer side of the connecting hole.
6. The high-tightness fireproof soft sealing gate valve according to claim 5, wherein: the first gasket is made of clean plastic materials, the second gasket is made of stainless steel wound graphite materials, and the second gasket can be independently sealed.
7. The high-tightness fireproof soft sealing gate valve according to claim 1, wherein: the flashboard is provided with a groove corresponding to the valve seat, the groove is of a dovetail structure with a small bottom width opening, and a sealing block is embedded in the groove.
8. The high-tightness fireproof soft sealing gate valve according to claim 7, wherein: the valve seat is provided with a sealing surface, and the width of the sealing surface is larger than that of the groove opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322794653.9U CN220850808U (en) | 2023-10-18 | 2023-10-18 | High leakproofness fire prevention soft seal gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322794653.9U CN220850808U (en) | 2023-10-18 | 2023-10-18 | High leakproofness fire prevention soft seal gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220850808U true CN220850808U (en) | 2024-04-26 |
Family
ID=90788254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322794653.9U Active CN220850808U (en) | 2023-10-18 | 2023-10-18 | High leakproofness fire prevention soft seal gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220850808U (en) |
-
2023
- 2023-10-18 CN CN202322794653.9U patent/CN220850808U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |