CN201561137U - Double-sealing sluice valve - Google Patents
Double-sealing sluice valve Download PDFInfo
- Publication number
- CN201561137U CN201561137U CN2009201802983U CN200920180298U CN201561137U CN 201561137 U CN201561137 U CN 201561137U CN 2009201802983 U CN2009201802983 U CN 2009201802983U CN 200920180298 U CN200920180298 U CN 200920180298U CN 201561137 U CN201561137 U CN 201561137U
- Authority
- CN
- China
- Prior art keywords
- sealing
- flashboard
- screw rod
- gate valve
- valve
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 44
- 239000000945 filler Substances 0.000 claims description 17
- 238000005266 casting Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 210000003660 reticulum Anatomy 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Sliding Valves (AREA)
Abstract
The utility model discloses a double-sealing sluice valve, which includes a valve body, a lower valve cover integrally structured with the valve body, and an upper valve cover forming a flange type dismountable connection with the lower valve cover; the upper valve cover is provided with an operating screw and an operating handlewheel; a flashboard interlocked with the operating screw is arranged in the valve body; the valve cavity of the valve body is provided with a sealing surface matched with the flashboard; the contact surface of the screw and the upper valve cover is sealed by padding and/or O-shaped sealing rings; a reversed round table sealing element taking the screw as a middle axis is fixedly arranged on the screw above the flashboard; and the bottom surface of the upper valve cover is provided with a reversed round table sealing surface matched with the sealing element.
Description
Technical field:
The utility model relates to a kind of double seal gate valve.
Background technique:
Gate valve is to control gate valve by the lifting of flashboard to open and close, and that is to say that when the valve pocket of general who has surrendered's gate valve under the flashboard sealed, gate valve was closed; Otherwise when flashboard was risen the valve pocket perforation that makes gate valve by the screw rod drive, gate valve was opened.Shown in Figure 1, when gate valve is opened, flashboard 1 is in the flashboard chamber 2, seal by filler 5 and/or O RunddichtringO 6 between the surface of contact of bonnet 3 and screw rod 4, this moment, filler and O RunddichtringO bore pressure, long-term pressure-bearing makes filler and seal ring place can produce leakage, and some special industry need be passed through the line transportation poisonous and harmful substance, and the leakage of gate valve can endanger the healthy of environment and staff.When revealing, gate valve just need close this gate valve or the upstream and downstream gate valve keeps in repair leakage point, and concerning the manufacturing enterprise of some special industries, can not close oil transportation, gas transmission or water supply gate valve, even otherwise of short duration stopping production also can cause tremendous loss, this just needs that development is a kind of can be with the sealing suitable for reading of flashboard chamber so that can repair or change the double seal gate valve of filler/O RunddichtringO under the state that gate valve is held open.
Summary of the invention:
For overcoming the defective of prior art, the purpose of this utility model is to provide a kind of double seal gate valve, can be under the state that gate valve is held open, sealing suitable for reading with the flashboard chamber at flashboard place, reveal so that repair because of filler or O RunddichtringO damage the gate valve that causes, also just need not stop production line, avoid loss.
The utility model technical solution problem adopts following technological scheme:
A kind of double seal gate valve, comprise valve body, the bottom flange that is structure as a whole with valve body, form the dismantled and assembled bonnet that is connected of flange-type with bottom flange, described bonnet is provided with operation screw rod and operation handwheel, be provided with and operate the flashboard of screw rod interlock in the valve body, be provided with the sealing surface that matches with flashboard in the valve pocket of valve body, seal with filler and/or O RunddichtringO between the surface of contact of screw rod and bonnet, be positioned at that to be installed with the screw rod on the screw rod of flashboard top be the reverse frustoconic Sealing of axis, the bottom surface of described bonnet is provided with the reverse frustoconic sealing surface that matches with described Sealing.
Described reverse frustoconic Sealing and the moulding of described screw rod integrally casting.
Compared with the prior art, the beneficial effects of the utility model are embodied in:
The utility model is by setting firmly the reverse frustoconic Sealing on the screw rod body above the flashboard, sealing part and screw rod are integral structure and are axis with the screw rod, and be provided with the reverse frustoconic sealing surface that matches with described Sealing in the bottom surface of bonnet, when gate valve is in open mode, Sealing and reverse frustoconic sealing surface Spielpassung, Sealing not pressure-bearing itself can loss, still seal with filler and/or O RunddichtringO between bonnet and the screw rod, when causing gate valve to be revealed, filler or seal ring loss need change, the turn screw rod that can make progress this moment makes Sealing and reverse frustoconic sealing surface closely contact and forms sealing (gate valve still is in open mode), just replaceable or reparation filler and seal ring.The utility model can be implemented under the prerequisite of closing gate valve (promptly not closing pipelines such as oil transportation, gas, water) not, and the leakage of gate valve is handled.The utility model is simple in structure, and is reasonable in design, processes easyly and with low cost, need not to change the basic structure and the using method of gate valve.
Description of drawings:
Fig. 1 is the structural representation of existing gate valve; Structural representation when Fig. 2 is in closed condition for the utility model gate valve; Structural representation when Fig. 3 seals for the utility model gate valve is in opening state and Sealing.
Number in the figure: 1 flashboard, 2 flashboard chambeies, 3 bonnets, 4 screw rods, 5 fillers, 6, the O RunddichtringO, 7 valve bodies, 8 bottom flanges, 9 handwheels, 10 Sealings.
Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.
Embodiment, non-limiting examples is as described below:
Embodiment: in conjunction with Fig. 2, the double seal gate valve of present embodiment, comprise valve body 7, with valve body be the bottom flange that is in valve body top 8 of integral structure, form the dismantled and assembled bonnet that is connected 3 of flange-type with bottom flange, on, seal with the bolt connection and with sealing gasket between the bottom flange, on, form the flashboard chamber 2 that can hold flashboard 1 between the bottom flange, be provided with operation screw rod 4 and operation handwheel 9 on the top of bonnet 3, flashboard 1 is fixed on the lower end of screw rod 4 in the screw rod interlock, be provided with the sealing surface that matches with flashboard 1 in the valve pocket of valve body 7, the closing gate valve but the sealing surface during forward rotation handwheel 9 in screw rod 4 descending drive flashboards 1 and the valve pocket closely cooperates, backward rotation handwheel then gate valve is opened, flashboard 1 is in the flashboard chamber 2 when gate valve is opened, seal with filler 5 and/or O RunddichtringO 6 between the surface of contact of screw rod 4 and bonnet 3, damage easily because of filler or the long-term pressure-bearing of O RunddichtringO and to cause gate valve to be revealed, for repairing or change filler or O RunddichtringO under the prerequisite that is implemented in closing gate valve not, gate valve of the present utility model is provided with the selfsealings that Sealing 10 is realized gate valve, Sealing be positioned on the screw rod of flashboard top and with the moulding of screw rod integrally casting, Sealing is reverse frustoconic and is the axis setting with the screw rod, and is provided with the reverse frustoconic sealing surface that matches with Sealing in the bottom surface of bonnet.In conjunction with Fig. 3, when filler 5 or O RunddichtringO 6 damages when causing gate valve to reveal needs replacing, backward rotation handwheel 9 rises screw rod, this moment Sealing 10 with the formation selfsealings that closely cooperate of the reverse frustoconic sealing surface of bonnet bottom surface, can be implemented under the situation of closing gate valve not and change filler or O RunddichtringO, can be implemented under the situation of closing gate valve not and change filler or O RunddichtringO.Gate valve of the present utility model has in the oil transportations of pressing or not having pressure, air feed, the water supply line applicable to all kinds of, also applicable in the pipeline of carrying corrosivity or toxic and harmful, liquid, is particularly useful in the conveyance conduit of all kinds of manufacturing enterprises that can not stop production.In specifically being provided with, hard alloy abrasion-resistant layer can be plated in the surface of Sealing, and the surface of reverse frustoconic sealing surface also handles accordingly, to improve the sealability and the working life of Sealing.
Claims (2)
1. double seal gate valve, comprise valve body, the bottom flange that is structure as a whole with valve body, form the dismantled and assembled bonnet that is connected of flange-type with bottom flange, described bonnet is provided with operation screw rod and operation handwheel, be provided with and operate the flashboard of screw rod interlock in the valve body, be provided with the sealing surface that matches with flashboard in the valve pocket of valve body, seal with filler and/or O RunddichtringO between the surface of contact of screw rod and bonnet, it is characterized in that, be positioned at that to be installed with the screw rod on the screw rod of flashboard top be the reverse frustoconic Sealing of axis, the bottom surface of described bonnet is provided with the reverse frustoconic sealing surface that matches with described Sealing.
2. a kind of double seal gate valve according to claim 1 is characterized in that, described reverse frustoconic Sealing and the moulding of described screw rod integrally casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201802983U CN201561137U (en) | 2009-11-04 | 2009-11-04 | Double-sealing sluice valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201802983U CN201561137U (en) | 2009-11-04 | 2009-11-04 | Double-sealing sluice valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201561137U true CN201561137U (en) | 2010-08-25 |
Family
ID=42626281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201802983U Expired - Fee Related CN201561137U (en) | 2009-11-04 | 2009-11-04 | Double-sealing sluice valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201561137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397560A (en) * | 2018-01-19 | 2018-08-14 | 上海远高阀业（集团）有限公司 | A kind of super-large diameter flexible wedge gate gate valve |
-
2009
- 2009-11-04 CN CN2009201802983U patent/CN201561137U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397560A (en) * | 2018-01-19 | 2018-08-14 | 上海远高阀业（集团）有限公司 | A kind of super-large diameter flexible wedge gate gate valve |
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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: 20100825 Termination date: 20171104 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |