CN201615275U - Light flat gate valve - Google Patents
Light flat gate valve Download PDFInfo
- Publication number
- CN201615275U CN201615275U CN2009202221183U CN200920222118U CN201615275U CN 201615275 U CN201615275 U CN 201615275U CN 2009202221183 U CN2009202221183 U CN 2009202221183U CN 200920222118 U CN200920222118 U CN 200920222118U CN 201615275 U CN201615275 U CN 201615275U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- light
- seat
- grease
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model provides a light flat gate valve which comprises a valve body, a valve base, a wedge disc, a valve cover, a valve rod, a bracket and a transmission device, a valve body end flange is connected with a pipeline in silk flanged manner; a pre-tightening spring is arranged between the valve base and the valve body and is sealed by an O-shaped seal ring, so as to form a floating valve base structure on both sides of the wedge disc; a PTFE seal ring is embedded in the sealed surface of the valve base, hard alloy is applied on the sealed surface through spray welding, so as to form double seal. The light flat gate valve has reliable sealing performance, light weight, small volume, less length, can effectively reduce the load on the root part of a large petroleum storage tank and is particularly applicable to large petroleum storage tanks.
Description
Technical field
The utility model belongs to the mechanical valve class, is specifically related to the plate valve that Large Storage Tanks oil tank root such as a kind of oil uses.
Background technique
Existing ordinary flat gate valve, because valve body needs by bolt its end flange to be connected with pipeline, the structural design of its connection part is not quite reasonable, the structure length that causes valve is long partially, volume and weight are bigger than normal, use can increase the load of oil tank root on Large Storage Tanks oil tank roots such as oil.
Summary of the invention
The purpose of this utility model is to provide that a kind of sealability is reliable, in light weight, volume is little, length is short, can effectively alleviate the light-duty plate valve of oil tank root load.
For achieving the above object, the technological scheme taked of the utility model is:
A kind of light-duty plate valve comprises valve body, valve seat, flashboard, valve gap, valve rod, support and transmission device, and its valve body end flange adopts the studding form to be connected with pipeline; Be provided with preloading spring between valve seat and the valve body and adopt the sealing of zero RunddichtringO, constitute the floating valve seat structural type of flashboard both sides; Inlay poly-polytetrafluoroethylsealed sealed circle at the sealing surface place of valve seat, and on the sealing face surfacing cemented carbide, form double seal.
Also be provided with grease pouring valve on the described valve body, seal grease enters sealing surface of seat by the grease pouring valve on the valve body, with the poly-tetrafluoro soft seal of the common formation of described double seal, cemented carbide seals firmly and the triple seal of greasing auxiliary seal, makes sealing more reliable, reaches zero leakage.
Also be provided with grease pouring valve on the described valve gap, seal grease is injected into by the filler spacer ring by the grease pouring valve on the valve gap and plays the auxiliary seal effect between valve rod and the filler, makes sealing reliably reach zero leakage.
The above-mentioned light-duty plate valve that the utility model provides, simple in structure, economic and practical, because its end flange adopts studding to be connected with pipeline, make the structure length of valve body shorten to 1/2 of common valve at least, have advantages such as structure length is short, in light weight, volume is little, price is low, can effectively alleviate the load of oil tank root.Because valve seat adopts sealing of zero RunddichtringO and spring to apply the floating valve seat structure of pretightening force; when valve expanded by heating and the pressure that causes lumen during greater than pipeline pressure; the pressure difference that medium acts on the valve seat both sides pushes away flashboard with floating valve seat; cavity pressure is released in the pipeline by the gap of flashboard and valve base chamber; thereby effectively protected the safety of valve; and 1/2 of the keying moment Gongwei common valve of this structure can reach light open and close valve.Because adopting on the sealing surface, valve seat inlays poly-tetrafluoro (PTFE) seal ring, and the surfacing cemented carbide, having the double seal effect of poly-tetrafluoro to metal and metal to metal, poly-tetrafluoro (PTFE) sealing surface has the effect of removing the flashboard adhesion simultaneously; The surfacing cemented carbide has extremely strong sealing to the hard sealing that metal forms, and abrasion-resistance has various suspended particulates in the pipeline medium, can not produce any influence to sealing pair, guarantees not leak.
Description of drawings
Fig. 1 is light-duty construction of parallel gate valve schematic representation;
Fig. 2 is the I partial enlarged drawing of Fig. 1.
Among the figure: the 1-limiting board; 2,3,11-zero RunddichtringO; The 4-valve body; The 5-valve seat; The 6-drain plug; The 7-flashboard; The 8-grease pouring valve; 9-gathers polytetrafluoroethylsealed sealed circle; The 10-preloading spring; 12-surfacing cemented carbide; The 13-bolt; The 14-nut; The 15-valve gap; The 16-valve rod; The 17-stuffing box; The 18-support; The 19-transmission device.
Embodiment
As shown in Figure 1 and Figure 2, among the light-duty plate valve embodiment that the utility model provides, valve body 4 is cylindrical perpendicular to the valve pocket of flow direction, and the end flange of valve body 4 adopts the studding form to be connected with pipeline.Limiting board 1 is established in the bottom of valve body 4, valve seat 5 is installed in the valve seat orifice of valve body 4, valve seat 5 is taked floating valve seat structural type, promptly between valve seat 5 and valve body 4, be provided with preloading spring 10 and adopt zero RunddichtringO sealing 2,3 and 11, both sides at flashboard 7 constitute floating valve seat, the piston effect of floating valve seat can realize importing and exporting sealing simultaneously, thereby the lumen of valve body 4 and passage are isolated fully, can overhaul valve in working order down, when in the valve pocket residue being arranged, unload drain plug 6 and blowdown valve is installed, residue in the valve body chamber is discharged.Poly-polytetrafluoroethylsealed sealed circle 9 is inlayed at the sealing surface place of valve seat 5, and surfacing cemented carbide 12, also be provided with grease pouring valve 8 on the valve body 4, seal grease enters sealing surface of seat by the grease pouring valve on the valve body, constitute poly-tetrafluoro thus to the soft seal of metal, the hard sealing and the triple seal of greasing auxiliary seal of metal to metal, make sealing more reliable, realize zero leakage.Also be provided with grease pouring valve 8 on the valve gap 15, seal grease is injected into by the filler spacer ring by the grease pouring valve on the valve gap 15 and plays the auxiliary seal effect between valve rod 16 and the filler, makes packing seal more reliable, and valve gap 15 is connected by bolt 13 and nut 14 with valve body 4.Flashboard 7 is parallel Single disc, is connected with valve rod 16 through T-slot, and valve rod 16 links to each other with electric transmission machanism 19 on being contained in support 18, and electric transmission machanism 19 control flashboards 7 produce relative movement in valve body 4, makes valve opening or closes.
Above-described only is preferred embodiment of the present utility model.Should be understood that those of ordinary skill, under technology enlightenment provided by the utility model, can also make other equivalent modifications and improvement, also should be considered as protection domain of the present utility model for valve technology field.
Claims (3)
1. a light-duty plate valve comprises valve body, valve seat, flashboard, valve gap, valve rod, support and transmission device, it is characterized in that: its valve body end flange adopts the studding form to be connected with pipeline; Be provided with preloading spring between valve seat and the valve body and adopt the sealing of zero RunddichtringO, constitute the floating valve seat structural type of flashboard both sides; Inlay poly-polytetrafluoroethylsealed sealed circle at the sealing surface place of valve seat, and on the sealing face surfacing cemented carbide, form double seal.
2. light-duty plate valve according to claim 1 is characterized in that: also be provided with grease pouring valve on the described valve body, seal grease enters sealing surface of seat by the grease pouring valve on the valve body.
3. light-duty plate valve according to claim 1 and 2 is characterized in that: also be provided with grease pouring valve on the described valve gap, seal grease is injected between valve rod and the filler by the filler spacer ring by the grease pouring valve on the valve gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202221183U CN201615275U (en) | 2009-12-14 | 2009-12-14 | Light flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202221183U CN201615275U (en) | 2009-12-14 | 2009-12-14 | Light flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201615275U true CN201615275U (en) | 2010-10-27 |
Family
ID=43001644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202221183U Expired - Fee Related CN201615275U (en) | 2009-12-14 | 2009-12-14 | Light flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201615275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503297A (en) * | 2020-04-25 | 2020-08-07 | 浙江富锐实业有限公司 | High-performance hard-density bidirectional knife valve |
-
2009
- 2009-12-14 CN CN2009202221183U patent/CN201615275U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111503297A (en) * | 2020-04-25 | 2020-08-07 | 浙江富锐实业有限公司 | High-performance hard-density bidirectional knife valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204004574U (en) | Gudgeon ball valve | |
| CN202371199U (en) | High pressure flat gate valve with flow guide hole | |
| CN205173525U (en) | Submarine pipeline pair gate valve | |
| CN201615275U (en) | Light flat gate valve | |
| CN202719181U (en) | Hard seal ball valve | |
| CN206668991U (en) | A kind of soft seat butterfly valve of novel sealing structure | |
| CN211599543U (en) | High-temperature high-pressure three-way high-pressure double-sealing hydraulic control stop valve | |
| CN103410994B (en) | Sand prevention valve | |
| CN203309238U (en) | High-temperature high-pressure spring full lift safety valve | |
| CN102032358A (en) | All-welded buried root ball valve of compound seal fixed ball | |
| CN204610917U (en) | Forged steel pipeline soft seal plate valve | |
| CN210949952U (en) | Ultra-high pressure guide plate flat gate valve | |
| CN101985990B (en) | Metal bidirectional sealing valve cavity safety relief device | |
| CN205225143U (en) | Scour prevention's geothermol power well head assembly | |
| CN203115129U (en) | Triple eccentric metallic seal butterfly valve | |
| CN107917205A (en) | A kind of soft seal three-eccentric-butterfly-valve | |
| CN206338432U (en) | A kind of dual-seal flat gate valve | |
| CN203009855U (en) | Internal-pressure self-sealing type valve cover stop valve | |
| CN201723746U (en) | High-temperature and high-pressure stop valve of T-type power station | |
| CN201836479U (en) | Safety relief device of metal two-way sealing valve cavity | |
| CN204610915U (en) | Flexible disc Wedge gate valve | |
| CN201354869Y (en) | rubber-lining check valve on sealing surface | |
| CN205479460U (en) | Floating ball valve | |
| CN211599582U (en) | Flat gate valve not easy to leak | |
| CN204610912U (en) | The hard sealed flat gate valve of forged steel pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20171214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |