CN201561137U - Double-sealing sluice valve - Google Patents

Double-sealing sluice valve Download PDF

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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
Application number
CN2009201802983U
Other languages
Chinese (zh)
Inventor
张军
张纪祥
Original Assignee
张军
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 张军 filed Critical 张军
Priority to CN2009201802983U priority Critical patent/CN201561137U/en
Application granted granted Critical
Publication of CN201561137U publication Critical patent/CN201561137U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

A kind of double seal gate valve
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.
CN2009201802983U 2009-11-04 2009-11-04 Double-sealing sluice valve Expired - Fee Related CN201561137U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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