CN203146882U - Self-inspection type gate valve - Google Patents
Self-inspection type gate valve Download PDFInfo
- Publication number
- CN203146882U CN203146882U CN 201320127748 CN201320127748U CN203146882U CN 203146882 U CN203146882 U CN 203146882U CN 201320127748 CN201320127748 CN 201320127748 CN 201320127748 U CN201320127748 U CN 201320127748U CN 203146882 U CN203146882 U CN 203146882U
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- flashboard
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- sealing
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Abstract
The utility model relates to the technical field of valves, in particular to a self-inspection type gate valve. The self-inspection type gate valve comprises a valve body, a valve seat and a cut-off mechanism. The cut-off mechanism further comprises a conical protruding block, a check block and a valve head. The conical protruding block and the check block are arranged at the lower end of a valve rod in sequence, the valve head is a cavity with an opening in the side portion, a space capable of containing the conical protruding block and the check block is arranged in the cavity, stroke spaces where the conical protruding block and the check blocks are capable of vertically moving are arranged on the top portion and the bottom portion of the space, universal joints are arranged on two sides of the valve head respectively, grooves are formed in the inner sides of gate plates, and the universal joints on the valve head stretch into the grooves and are connected with the gate plates. The self-inspection type gate valve has the advantages of being reasonable in structure and convenient to use, enabling a valve to be opened easily and enabling a sealing pair to be capable of being maintained.
Description
Technical field
The utility model relates to a kind of valve technology field, specifically a kind of self-checking type gate valve.
Background technique
Gate valve is the weighlock plate valve again, the kind of gate valve is a lot, wedge-type double-flashboard, wedge-type Single disc, parallel Single disc etc. are arranged, wherein use comparatively extensive with the wedge-type double ram type, the mechanism of damming in traditional wedge-type double-flashboard gate valve generally includes two shoe brake plates and is arranged on spreading mechanism between two flashboards, and when closing, the valve rod in the spreading mechanism drives the wedge-shaped blocks plate that will rise and is close to two flashboards, and make the sealing surface of two flashboards and valve seat constitute sealing pair, to realize valve closing.Because sealing pair frictional force is bigger, add the pressure of upper valve body inner fluid, make seal pressure bigger, valve opening or closing torque are bigger, when particularly initially opening, cause and open difficulty.In addition, during valve opening, because the sealing surface of flashboard and valve seat has one section sliding friction, formation is worn and torn and is occurred leaking easily, influences sealing effect, and valve can't be safeguarded, can only change.
Summary of the invention
The utility model provides a kind of rational in infrastructure, easy to use in order to overcome above-mentioned defective, and valve opening is easy, the maintainable self-checking type gate valve of sealing pair.
The technical solution adopted in the utility model is: a kind of self-checking type gate valve, comprise valve body, valve seat, the mechanism of damming, have the runner of perforation in the valve body, at two runner mouth places valve seat is set respectively, the mechanism of damming is arranged between two valve seats, the mechanism of damming comprises valve rod and two symmetrically arranged flashboards, the sealing surface of two flashboards and the sealing surface of valve seat form sealing pair, it is characterized in that: the mechanism of damming also comprises the taper projection, block and valve head, described valve rod lower end sets gradually taper projection and block, the taper projection is inverted cone wide at the top and narrow at the bottom, the vertical section of block is inverted T-shaped, described valve head is the cavity of sidepiece band opening, the space of inside cavity for holding taper projection and block, and the top in this space and bottom are provided with taper projection and block stroke moving up and down space, that is: inside cavity comprises the cone space that is arranged on top and the inverted T-shaped space of bottom, the tapering of cone space and height corresponding with the taper projection is greater than the height of taper projection, inverted T-shaped space and block shape are corresponding, and the bottom space height is greater than the stop bottom height, both sides external at valve head is provided with universal joint, be provided with latch plate on valve head top, on valve rod, the top of latch plate is provided with the projection that can press latch plate; Described flashboard inboard arranges groove, and the universal joint on the valve head stretches in this groove and is connected with flashboard.
In this practicality, the sealing surface of valve seat is provided with the leak detection groove of ring, is provided with the sealed groove of annular along the circumferential surface of valve seat, distributes between leak detection groove and the sealed groove to be provided with material hole and to be communicated with, on valve body, be provided with the through hole that communicates with the sealed groove of valve seat; Described flashboard is disc, the circumference of flashboard is provided with tooth, be provided with the through hole that can stretch into for gear below the bottom of valve body, flashboard, be provided with the gear drive that removably connects in the bottom of valve body, the tooth on gear drive and the flashboard meshes.
Valve rod extending port place on valve body arranges Sealing, and the valve rod above the latch plate is provided with sealing block, and sealing block is in the form of annular discs, and when valve rod was promoted to high state, sealing block was close to the valve rod extending port place at valve body top.
The utility model is provided with valve head in stem lower portion, valve head is connected by universal joint with the flashboard of both sides, valve rod forms wedge shape by taper projection and valve head and is connected, when valve rod drive taper projection moves down, the taper projection promotes the valve head both sides and outwards struts, the universal promotion flashboard that connects of valve head both sides outwards moves, thereby makes flashboard and valve base sealing; During Open valve, valve rod drives the taper projection and block is upwards mobile in valve head chamber, the universal joint of valve head both sides all moves inwards and resets, two flashboards just form the gap with valve seat, driving valve head when the taper projection moves to the valve head top moves up, valve head moves up by two flashboards of universal joint drive of both sides, because it is gapped between two flashboards and the valve seat at this moment, frictional force is little when therefore promoting, valve opening is easy, open laborsavingly, reduced the wearing and tearing between flashboard and the valve seat, prolonged working life; The utility model is provided with leak detection groove and sealed groove at valve seat, be provided with material hole between two grooves, the through hole communicate with sealed groove is set at valve body, again the flashboard circumference is arranged tooth, flashboard is connected with gear drive, after leaking appears in the sealing surface wear of valve plate and valve seat, can inject abrasive to the leak detection groove by through hole and material hole, gear drive drives the flashboard rotation, sealing surface is ground, realize the maintainability of valve, can also annotate sealer to sealed groove by through hole and material hole, shutoff is carried out in leakage, all can be improved the sealing effect of valve.
Description of drawings
Fig. 1 is the utility model embodiment 1 schematic representation.
Fig. 2 is the utility model embodiment 2 schematic representation.
Embodiment
Now by reference to the accompanying drawings the utility model is further described, Fig. 1 is embodiment 1 of the present utility model, comprise valve body 1, valve seat 2, the mechanism of damming, have the runner of perforation in the valve body 1, at two runner mouth places valve seat 2 is set respectively, the mechanism of damming is arranged between two valve seats 2, and the mechanism of damming comprises that the sealing surface of valve rod 3 and 4, two flashboards 4 of two symmetrically arranged flashboards and the sealing surface of valve seat 2 form sealing pair.Valve rod 3 tops are connected with transmission device, and transmission device drives valve rod 3 and realizes moving up or down.The mechanism of damming also comprises taper projection 5, block 6 and valve head 7, described valve rod 3 lower ends set gradually taper projection 5 and block 6, taper projection 5 is inverted cone wide at the top and narrow at the bottom, the vertical section of block 6 is inverted T-shaped, namely is made up of montant and transverse slat, and montant can be square cylinder, it also can be circular cylinder, present embodiment is circular cylinder, and transverse slat can be that rectangular plate also can be circular plate, and present embodiment is circular plate.Described valve head 7 is the cavity of sidepiece band opening, the space of inside cavity for holding taper projection 5 and block 6, and the top in this space and bottom are provided with taper projection 5 and block 6 stroke moving up and down spaces, that is: inside cavity comprises the cone space that is arranged on top and the inverted T-shaped space of bottom, corresponding and the height of the tapering of cone space and taper projection 5 is greater than the height of taper projection 5, when taper projection 5 was positioned at valve head 7 tops usually, taper projection 5 was 1-2 centimetre with the skew wall of cone space.The inverted T-shaped space is corresponding with block 6 shapes, and the bottom space height is greater than block 6 bottom level, taper projection 5 and block 6 can move up and down in valve head 7 under valve rod 3 drives like this, when valve rod 3 moves down, taper projection 5 presses down the cone space part of valve head 7, because there is opening valve head 7 both sides, valve head 7 both sides just outwards strut.Both sides external at valve head 7 is provided with universal joint 8, and the opening on the described valve head 7 is shape at right angles, and the opening of both sides is symmetrical arranged, and universal joint 8 is positioned at the corner of opening, and this structure is beneficial to universal joint 8 and outwards struts.Be provided with latch plate on valve head 7 tops, on valve rod 3, the top of latch plate is provided with the projection that can press latch plate.Described flashboard 4 inboards arrange groove, and the universal joint 8 on the valve head 7 stretches in this groove and is connected with flashboard 4.
The utility model is when the needs throttle down, and transmission device drives valve heads 7 by valve rod 3 and flashboard 4 moves down, and when valve head 7 was positioned at valve body 1 bottom, the sealing surface of two flashboards 4 was consistent with the sealing surface height of valve seat 2 but leave the space.Valve rod 3 continues to move down under transmission device drives, projection on the valve rod 3 presses down latch plate, make latch plate be subjected to force compresses, meanwhile, taper projection 5 on the valve rod 3 presses down the wall of the cone space of valve head 7, promote valve head 7 both sides and outwards strut, it is outwards mobile that the universal joint 8 of valve head 7 both sides just promotes flashboard 4, thereby make flashboard 4 and valve seat 2 sealings.
When the needs Open valve, transmission device drives valve rod 3 and moves up, and under the effect of latch plate, valve rod 3 drive taper projections 5 and block 6 is moved up fast in valve head 7, prevent that taper projection 5 from being choked, make the initial actuating that moves on the valve rod 3 light, quick.After taper projection 5 moves up, taper projection 5 no longer struts the both sides of valve head 7, the universal joint 8 of valve head 7 both sides all moves inwards and resets, two flashboards 4 just form the gap with valve seat 2, when taper projection 5 is positioned at valve head 7 tops, block 6 also is positioned at the top in inverted T-shaped space, valve rod 3 drives valve head 7 by taper projection 5 and block 6 and moves up, valve head 7 moves up by two flashboards 4 of universal joint 8 drives of both sides, and owing to gapped between two flashboards 4 and the valve seat 2 at this moment, frictional force is little when therefore promoting, valve opening is easy, open laborsavingly, reduced the wearing and tearing between flashboard 4 and the valve seat 2, prolonged working life.Block 6 is set is the area of contact when increasing valve rod 3 poppet valve head 7, action is more stable when making valve head 7 drive flashboards 4 to rise.
Fig. 2 is the utility model embodiment 2, among the embodiment 2 except the whole technological schemes that comprise embodiment 1, also comprise following technological scheme: the sealing surface of valve seat 2 is provided with the leak detection groove 11 of ring, namely the surface of contact at valve seat 2 and flashboard 4 arranges leak detection groove 11, be provided with the sealed groove of annular along the circumferential surface of valve seat 2, distributing between leak detection groove 11 and the sealed groove is provided with material hole 12 and is communicated with.On valve body 1, be provided with the through hole that communicates with the sealed groove of valve seat 2.Described flashboard 4 is disc, the circumference of flashboard 4 is provided with tooth, below the bottom of valve body 1, flashboard 4, be provided with the through hole that can stretch into for gear, be provided with the gear drive 13 that removably connects in the bottom of valve body 1, the tooth engagement on gear drive 13 and the flashboard 4.Gear drive 13 comprises drive unit and gear, and drive unit rotates by the transmission shaft driven gear, and gear driven flashboard 4 rotates.Drive unit can be motor, and the handwheel that also can be arranged on the transmission shaft carries out manual drives.In the present embodiment, the valve rod 3 extending port places on valve body 1 also arrange Sealing 15, and Sealing 15 can be sealed packing or O-ring seal etc.Valve rod 3 above the latch plate is provided with sealing block 14, and sealing block 14 is in the form of annular discs, and when valve rod 3 was promoted to high state, sealing block 14 was close to the valve rod 3 extending port places at valve body 1 top.The upper surface of described sealing block 14 also can be arc or taper, and valve body 1 top and surface of contact sealing block 14 just are corresponding arc or taper concave surface.
Embodiment 2 valve closing is identical with embodiment 1 with breakdown action, embodiment 2 also can realize following function with respect to the technological scheme that embodiment 1 increases: when the sealing surface of flashboard 4 and valve seat 2 leaks because of wearing and tearing, can inject abrasive by the through hole on valve body 1, the abrasive via through holes, sealed groove and material hole 12 enter leak detection groove 11, abrasive is arrived between the sealing surface of valve seat 2 and flashboard 4, drive flashboard 4 rotations by gear drive 13, thereby the sealing surface of valve seat 2 with flashboard 4 ground, realization is to the maintenance of valve, the leakage that mild wear causes just can be repaired, and need not to change whole valve.When equipment moves, occur to leak, sealer can also be injected in the through hole of valve body 1, sealer is arrived between the sealing surface of valve seat 2 and flashboard 4 carry out leak stopping, need not shutdown, do not influence the operation of equipment.
Among the embodiment 2, when needing to stop transport leak detection, first throttle down, the through hole of valve body 1 connects stamper, and press water is injected in through hole, and press water enters leak detection groove 11 through sealed groove and material hole 12, carry out bulge test, thereby whether the sealing surface that detects valve seat 2 and flashboard 4 there is leakage.
The technological scheme of the Placement of mechanism of damming in the utility model and embodiment's 2 self-grind formula structure also is applicable to wedge-type Single disc 4 valves or plate check valve.
The utlity model has rational in infrastructurely, easy to use, valve opening is easy, the maintainable characteristics of sealing pair.
Claims (3)
1. self-checking type gate valve, comprise valve body, valve seat, the mechanism of damming, have the runner of perforation in the valve body, at two runner mouth places valve seat is set respectively, the mechanism of damming is arranged between two valve seats, the mechanism of damming comprises valve rod and two symmetrically arranged flashboards, the sealing surface of two flashboards and the sealing surface of valve seat form sealing pair, it is characterized in that: the mechanism of damming also comprises the taper projection, block and valve head, described valve rod lower end sets gradually taper projection and block, the taper projection is inverted cone wide at the top and narrow at the bottom, the vertical section of block is inverted T-shaped, described valve head is the cavity of sidepiece band opening, the space of inside cavity for holding taper projection and block, and the top in this space and bottom are provided with taper projection and block stroke moving up and down space, that is: inside cavity comprises the cone space that is arranged on top and the inverted T-shaped space of bottom, the tapering of cone space and height corresponding with the taper projection is greater than the height of taper projection, inverted T-shaped space and block shape are corresponding, and the bottom space height is greater than the stop bottom height, both sides external at valve head is provided with universal joint, be provided with latch plate on valve head top, on valve rod, the top of latch plate is provided with the projection that can press latch plate; Described flashboard inboard arranges groove, and the universal joint on the valve head stretches in this groove and is connected with flashboard.
2. self-checking type gate valve according to claim 1, it is characterized in that: the sealing surface of valve seat is provided with the leak detection groove of ring, be provided with the sealed groove of annular along the circumferential surface of valve seat, distribute between leak detection groove and the sealed groove and be provided with material hole and be communicated with, on valve body, be provided with the through hole that communicates with the sealed groove of valve seat; Described flashboard is disc, the circumference of flashboard is provided with tooth, be provided with the through hole that can stretch into for gear below the bottom of valve body, flashboard, be provided with the gear drive that removably connects in the bottom of valve body, the tooth on gear drive and the flashboard meshes.
3. self-checking type gate valve according to claim 1 and 2, it is characterized in that: the valve rod extending port place on valve body arranges Sealing, valve rod above the latch plate is provided with sealing block, sealing block is in the form of annular discs, when valve rod was promoted to high state, sealing block was close to the valve rod extending port place at valve body top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127748 CN203146882U (en) | 2013-03-20 | 2013-03-20 | Self-inspection type gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320127748 CN203146882U (en) | 2013-03-20 | 2013-03-20 | Self-inspection type gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146882U true CN203146882U (en) | 2013-08-21 |
Family
ID=48974406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320127748 Expired - Lifetime CN203146882U (en) | 2013-03-20 | 2013-03-20 | Self-inspection type gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146882U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133710A (en) * | 2013-03-20 | 2013-06-05 | 潘健 | Self-checking type sluice valve |
| CN103836220A (en) * | 2014-02-18 | 2014-06-04 | 潘健 | Self-sealing slide valve |
| CN103836219B (en) * | 2014-02-18 | 2019-07-19 | 潘健 | Self-test sealing valve |
-
2013
- 2013-03-20 CN CN 201320127748 patent/CN203146882U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103133710A (en) * | 2013-03-20 | 2013-06-05 | 潘健 | Self-checking type sluice valve |
| CN103836220A (en) * | 2014-02-18 | 2014-06-04 | 潘健 | Self-sealing slide valve |
| CN103836219B (en) * | 2014-02-18 | 2019-07-19 | 潘健 | Self-test sealing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |