CN208935434U - Two way seal gate valve - Google Patents
Two way seal gate valve Download PDFInfo
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- CN208935434U CN208935434U CN201821641003.3U CN201821641003U CN208935434U CN 208935434 U CN208935434 U CN 208935434U CN 201821641003 U CN201821641003 U CN 201821641003U CN 208935434 U CN208935434 U CN 208935434U
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- valve
- way seal
- executing agency
- seal gate
- supporting plate
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Abstract
The utility model relates to a kind of two way seal gate valve, including valve body, valve body, which has, valve chamber and is connected with executing agency, is oppositely arranged on valve body there are two valve seat and in being correspondingly provided with two valve plates in valve chamber；Transmission mechanism is additionally provided in valve chamber, transmission mechanism connect and had with executing agency sealing drive state and valve to lead to drive state, seals under drive state, and two valve plates are located remotely from each other to be bonded with two valve seats respectively；Valve leads under drive state, and two valve plates are close to each other to separate respectively with two valve seats.Two way seal gate valve provided by the utility model is bonded with two sealing surface of seats of valve body respectively by two pieces of valve plates, realizes two way seal, sealing is more reliable, and sealing effect is preferable.Two valve plates mode depressurization close to each other or separate, especially close to each other with two valve plates is realized by transmission mechanism, is avoided the opposite sliding between valve plate and the sealing surface of valve seat, is efficiently reduced sealing surface wear, guarantee sealing effect.
Description
Technical field
The utility model belongs to valve technology field, and in particular to a kind of two way seal gate valve.
Background technique
In the industrial production, pressure, flow direction of pipeline internal medium etc. can change with production status, frequently appear in not
The opposite situation with the flow direction of pipeline internal medium under operating condition and high and low pressure side.And common gate valve often only has side equipped with close
Cover can only bear corresponding side high pressure, and when high-pressure side becomes the other side, sealing effect weakens significantly, it is possible to produce leakage,
It influences production and even causes safety accident.If installed using 2 gate valves are opposite, though two way seal can be realized, increases and set
Standby investment, and complexity is controlled, reliability is low.
Utility model content
The utility model embodiment is related to a kind of two way seal gate valve, can at least solve the segmental defect of the prior art.
The utility model embodiment is related to a kind of two way seal gate valve, including valve body, and the valve body has valve chamber and connection
There is executing agency, is oppositely arranged on the valve body there are two valve seat and in being correspondingly provided with two valve plates in the valve chamber；
Transmission mechanism is additionally provided in the valve chamber, the transmission mechanism connect with the executing agency and there is sealing to be driven
State and valve lead to drive state,
Under the sealing drive state, two valve plates are located remotely from each other to be bonded with two valve seats respectively；
The valve leads under drive state, and two valve plates are close to each other to separate respectively with two valve seats.
As one of embodiment, the transmission mechanism includes supporting plate and two groups of gear units, and the gear unit includes passing
Dynamic connecting rod and sliding component, the kinematic link both ends are cut with scissors with the sliding component and the output end of the executing agency respectively
It connects, the sliding component other end is connected with the corresponding valve plate, and two sliding components are limited as can be in the supporting plate
It is upper to slide and the supporting plate be driven mobile with the output end of the executing agency.
As one of embodiment, fixed there are two sleeve on the supporting plate, two sliding components are slidedly arranged on two institutes respectively
It states in sleeve and stretches out the corresponding sleeve respectively to connecting with the valve plate, it is convex that the sliding component is equipped with annular abutment
Platform and be arranged with retracting spring, the retracting spring is contained in the sleeve and one end is connected on the abutting boss and it is another
One end is connected on the end wall far from the kinematic link of the sleeve.
As one of embodiment, the sliding component include holddown spring, with the hinged piston portion of the kinematic link with
And what is connect with the valve plate wears socket part, the piston portion and the socket part of wearing are slidedly arranged in the sleeve, and the abutting is convex
Platform be formed in it is described wear in socket part, described holddown spring one end is abutted with the piston portion and the other end to be connected to the abutting convex
On platform.
As one of embodiment, the sleeve lining is equipped with annular stop boss and the annular stop boss is positioned at described
One end close to the kinematic link of sleeve.
As one of embodiment, the sliding component and the corresponding valve plate are hinged.
Limited block is equipped with as one of embodiment, in the valve chamber and the limited block is located at the separate described of the supporting plate
The side of executing agency；The supporting plate and the limited block against when, two valve plates are opposite with two valve seats respectively.
As one of embodiment, the side plate face far from the executing agency of the supporting plate is equipped with can be with the limit
The voussoir of block wedge form.
As one of embodiment, under the sealing drive state, two kinematic links are on same straight line.
As one of embodiment, the executing agency includes the vavle shelf being fixedly installed on the valve body, movably pacifies
Loaded on the valve rod being connect on the vavle shelf and with the transmission mechanism and for driving the valve rod to be axially moved along itself
Execute driving unit.
The utility model embodiment at least has the following beneficial effects:
Two way seal gate valve provided by the utility model, by two pieces of valve plates respectively with two valve base sealing face pastes of valve body
It closes, realizes two way seal, sealing is more reliable, and sealing effect is preferable.Realize that two valve plates are close to each other or remote by transmission mechanism
From mode depressurization especially close to each other with two valve plates avoids relatively sliding between valve plate and the sealing surface of valve seat
It is dynamic, sealing surface wear is efficiently reduced, guarantees sealing effect.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is structural schematic diagram when two way seal gate valve provided by the embodiment of the utility model fully opens；
Fig. 2 is structural schematic diagram of the valve plate provided by the embodiment of the utility model with valve seat when opposite；
Fig. 3 is structural schematic diagram when two way seal gate valve provided by the embodiment of the utility model is closed.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
Such as Fig. 1-Fig. 3, the utility model embodiment provides a kind of two way seal gate valve, including valve body 1, and the valve body 1 has
There is valve chamber and be connected with executing agency, be oppositely arranged on the valve body 1 there are two valve seat 11 and be correspondingly provided in the valve chamber
Two valve plates 2；Transmission mechanism is additionally provided in the valve chamber, the transmission mechanism connect with the executing agency and there is sealing to pass
Dynamic state and valve lead to drive state, under the sealing drive state, two valve plates 2 be located remotely from each other thus respectively with two valves
Seat 11 is bonded；The valve leads under drive state, and two valve plates 2 are close to each other to separate respectively with two valve seats 11.
It is easy-to-understand to, under above-mentioned sealing drive state, two valve plates 2 are bonded with two valve seats 11, and gate valve is in close state；
Above-mentioned valve leads under drive state, and two valve plates 2 are separated with two valve seats 11, and gate valve is in the open state.Two valve seats 11 for
Sealing surface is equipped on the position that valve plate 2 is bonded, and correspondence is respectively equipped with sealing surface on two valve plates 2, in two valve plates 2 respectively with two
When the sealing surface fitting of a valve seat 11, two way seal is realized.
Two way seal gate valve provided in this embodiment, by two pieces of valve plates 2 respectively with two 11 sealing surfaces of valve seat of valve body 1
Two way seal is realized in fitting, and sealing is more reliable, and sealing effect is preferable.By transmission mechanism realize two valve plates 2 it is close to each other or
Separate, especially close to each other with two valve plates 2 mode depressurization, avoids between valve plate 2 and the sealing surface of valve seat 11
Opposite sliding, efficiently reduces sealing surface wear, guarantees sealing effect.
Based on above-mentioned two way seal, it is assumed that wherein side is high-pressure side, the other side is low-pressure side, even if high-pressure side medium
Pressure is more than to grant the sealing pressing force of corresponding side valve plate 2 and opened the side valve plate 2, and high-pressure medium enters in valve chamber, valve chamber
Interior pressure medium can act on the back side of two side valve plates 2, and low pressure side valve plate 2 is on the one hand made to bear pressure medium and sealing compression
The effect in the same direction of power greatly enhances the sealing effect of the side, on the other hand, offsets the outer pressure medium of valve of high pressure side valve plate 2, most
Eventually under the action of sealing pressing force, which compresses 11 sealing surface of valve seat again, realizes two way seal.
Above-mentioned two way seal gate valve is advanced optimized, such as Fig. 1-Fig. 3, the transmission mechanism includes supporting plate 5 and two groups of biographies
Moving cell, the gear unit include kinematic link 3 and sliding component 4,3 both ends of kinematic link respectively with the sliding structure
Part 4 and the output end of the executing agency are hinged, and 4 other end of sliding component is connected with the corresponding valve plate 2, described in two
Sliding component 4 is limited to slide and can drive the supporting plate 5 to move with the output end of the executing agency on the supporting plate 5
It is dynamic.The articulated shaft of above-mentioned 3 both ends of kinematic link connection is axially parallel, and hangs down with the linear drives direction of above-mentioned executing agency
Directly.
Above-mentioned executing agency is generally used for linear reciprocation driving, and two transmissions connect two groups of above-mentioned gear units in other words
Bar 3 is preferably the output end axisymmetrical arrangement relative to the executing agency, guarantees two 2 synchronization actions of valve plate.Wherein one
In a specific embodiment, above-mentioned valve body 1 is horizontally mounted, and the valve port axis of two valve seats 11 is parallel with horizontal direction；Above-mentioned execution machine
Structure is installed on the top of valve body 1, output end axis with it is vertically parallel；Articulated shaft between kinematic link 3 and executing agency's output end
It is axial for horizontal direction and vertical with above-mentioned valve port axis；Above-mentioned supporting plate 5 is horizontally disposed, and sliding component 4 removes can be with executing agency
Outside output end lifting moving, horizontal sliding is only capable of on the supporting plate 5.Above-mentioned transmission mechanism under the driving effect of executing agency,
It can be close to or far from valve seat 11, when supporting plate 5 is moved to corresponding position and is blocked by corresponding component in valve chamber, in the machine of execution
It under the further driving effect of structure, is slided since sliding component 4 is limited on supporting plate 5, cunning can be driven by kinematic link 3
Dynamic component 4 slides on supporting plate 5, to drive two pieces of valve plates 2 close to each other or separate.
It is to be appreciated that having position limiting structure in valve chamber, limited for the shift motion to supporting plate 5, guarantees two
Valve plate 2 can be opposite with two valve seats 11；The setting position of position limiting structure can select as the case may be, such as the setting position of valve seat 11
It sets, such as the relative position between supporting plate 5 and sliding component 4, as the position limiting structure can be the inner wall of valve body 1.In this implementation
In example, such as Fig. 1-Fig. 3, it is preferable that use limited block 12, it may be assumed that be equipped with limited block 12 and the limited block 12 in the valve chamber
In the side far from the executing agency of the supporting plate 5；Supporting plate 5 and limited block 12 against when, two valve plates 2 respectively with two valve seats
11 is opposite, guarantee executing agency it is further act under, two valve plates 2 can be located remotely from each other to reclining respectively with two valve seats 11.
It is further preferred that the side plate face far from the executing agency of the supporting plate 5 is equipped with energy such as Fig. 1-Fig. 3
With the voussoir 52 of 12 wedge form of limited block.By supporting plate 5 and 12 wedge-like engagement of limited block, when not only can provide sealing
Supporting force, when also valve plate 2, transmission mechanism etc. can be made to move downward, automatic capturing position guarantees the centering of valve plate 2 and valve seat 11.
For the connection relationship between above-mentioned sliding component 4 and supporting plate 5, it can be and through-hole etc. is set in supporting plate 5, it is sliding
Dynamic component 4 is slidably installed in the through-hole, and both ends are connected with corresponding kinematic link 3 and valve plate 2 respectively；As preferred embodiment party
Formula, such as Fig. 1-Fig. 3, fixed there are two sleeve 51 on the supporting plate 5, two sliding components 4 are slidedly arranged on two sleeves respectively
It stretches out in 51 and respectively the corresponding sleeve 51 and is connect to the valve plate 2, so that sliding component 4 is limited in sleeve 51
It is interior, and supporting plate 5 can be driven to be performed mechanism driving together.The sliding component 4 is equipped with annular abutment boss and is arranged with back
Journey spring 6, the retracting spring 6 is contained in the sleeve 51 and one end is connected on the abutting boss and the other end abuts
In on the end wall far from the kinematic link 3 of the sleeve 51.The effect of above-mentioned retracting spring 6 essentially consists in, depressurization
When state, under the elastic acting force of the retracting spring 6, valve plate 2 first along it is axial (namely the valve port of valve seat 11 is axial, perpendicular to
Sealing surface) it is separated with valve seat 11, then along the separate valve in direction (namely linear drives direction of executing agency) for being parallel to sealing surface
Seat 11 avoids the opposite sliding between sealing surface, to efficiently reduce sealing surface wear.
Based on above structure, sliding component 4 can be continuous structure, for example slide link, be also possible to split type knot
Structure, in the present embodiment, such as Fig. 1-Fig. 3, it is preferable that the sliding component 4 includes holddown spring 42, cuts with scissors with the kinematic link 3
The piston portion 41 connect and what is connect with the valve plate 2 wear socket part 43, the piston portion 41 is slidedly arranged on the socket part 43 of wearing
In the sleeve 51, the abutting boss be formed in it is described wear in socket part 43, described 42 one end of holddown spring and the piston portion
41 abut and the other end be connected on the abutting boss.By the way that holddown spring 42 is arranged, enough sealing pressing forces are provided, are protected
Sealing effect is demonstrate,proved, can compensate for sealing surface, abrasion of hinge point etc., equipment is reliable, long service life.Further, described
51 inner wall of sleeve is equipped with annular stop boss and the annular stop boss is located at the close kinematic link 3 of the sleeve 51
One end, sliding stroke of above-mentioned 4/ piston portion 41 of sliding component in sleeve 51 is limited, is avoided from sleeve 51
It skids off.The rigidity of above-mentioned holddown spring 42 is preferably greater than the rigidity of retracting spring 6, to be largely greater than retracting spring 6
Rigidity is preferred, and grants component as main pressing force of the spring by holddown spring 42.
Above structure is advanced optimized, such as Fig. 1-Fig. 3, it is preferable that under above-mentioned sealing drive state, supporting plate 5 and limit
Block 12 is against and two kinematic links 3 are on same straight line.Based on the structure of above-mentioned split type sliding component 4, preferably it is
3 axis of kinematic link, 42 axis of holddown spring, wears 43 axis of socket part, 6 axis of retracting spring and valve plate 2 at 41 axis of piston portion
Center is conllinear, so that the reaction force that two kinematic links 3 are born is contrary, cancels out each other, above-mentioned transmission mechanism reaches certainly
The state of lock does not need executing agency and provides extra power, seals relatively reliable.
Above structure is advanced optimized, such as Fig. 1-Fig. 3, the sliding component 4 and the corresponding valve plate 2 are hinged, into one
Step is preferably flexural pivot connection, and valve plate 2 can be enable adaptively to swing when being bonded 11 sealing surface of valve seat, and compensation processing, assembly miss
Difference guarantees that valve plate 2 is bonded completely with 11 sealing surface of valve seat.
Above-mentioned executing agency can be using the manual actuator of this field routine or automatic executing agency etc..This implementation
In example, preferably, such as Fig. 1-Fig. 3, the executing agency includes the vavle shelf 72 being fixedly installed on the valve body 1, movable
Ground is installed on the valve rod 73 connecting on the vavle shelf 72 and with the transmission mechanism and for driving the valve rod 73 along itself
The execution driving unit 71 of axial movement.The execution driving unit 71 can drive using hydraulic cylinder, cylinder, electric pushrod etc. are automatic
Dynamic equipment, can also be used the driving structures such as motor+screw body；In the present embodiment, which includes hydraulic cylinder,
The hydraulic cylinder is installed on the vavle shelf 72 and output shaft and the valve rod 73 are coaxially connected.Further, in above-mentioned vavle shelf
72 equipped with limiting section is opened, and the driving equipments such as hydraulic cylinder cross movement and damage valve plate 2 and valve body 1 when for avoiding gate valve from opening
Deng.
Based on above structure, the course of work of the gate valve approximately as:
When closing valve, driving unit 71 is executed by two kinematic links 3 and drives the downward fortune together such as valve plate 2, supporting plate 5
It is dynamic, until 5 bottom voussoir 52 of supporting plate agrees with limited block 12.Valve plate 2 and 11 sealing surface center of valve seat are in sustained height at this time,
But it is at regular intervals between valve plate 2 and valve seat 11.
It executes 71 driving stem 73 of driving unit further to move down, pushes piston portion 41 to compress by kinematic link 3
Holddown spring 42, holddown spring 42 overcomes 6 power of retracting spring and drive valve plate 2 is close to being bonded with valve seat 11 to valve seat 11, directly
It is contacted to 73 end of valve rod with supporting plate 5, holddown spring 42 is compressed to greatest extent at this time, between 11 sealing surface of valve plate 2 and valve seat
Produce enough sealing pressing forces.
It when Open valve, executes 71 driving stem 73 of driving unit and moves upwards, piston portion 41 is driven by kinematic link 3
Level sliding, unclamps holddown spring 42 gradually, and removal seals pressing force, and wears socket part 43 and valve by the drive of retracting spring 6
2 horizontal movement of plate disengages valve plate 2 and 11 sealing surface of valve seat, keeps one section of safe distance S.When piston portion 41 retreats to limit position
It postpones, valve rod 73 continues up, and promotes the entirety such as valve plate 2, sleeve 51, supporting plate 5 and moves upwards, fully opens valve.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of two way seal gate valve, including valve body, the valve body has valve chamber and is connected with executing agency, it is characterised in that:
It is oppositely arranged on the valve body there are two valve seat and in being correspondingly provided with two valve plates in the valve chamber；
Transmission mechanism is additionally provided in the valve chamber, the transmission mechanism connect with the executing agency and has sealing drive state
Lead to drive state with valve,
Under the sealing drive state, two valve plates are located remotely from each other to be bonded with two valve seats respectively；
The valve leads under drive state, and two valve plates are close to each other to separate respectively with two valve seats.
2. two way seal gate valve as described in claim 1, it is characterised in that: the transmission mechanism includes supporting plate and two groups of transmissions
Unit, the gear unit include kinematic link and sliding component, the kinematic link both ends respectively with the sliding component and
The output end of the executing agency is hinged, and the sliding component other end is connected with the corresponding valve plate, the two sliding structures
Part is limited to slide and can drive the supporting plate mobile with the output end of the executing agency on the supporting plate.
3. two way seal gate valve as claimed in claim 2, it is characterised in that: fixed on the supporting plate there are two sleeve, two institutes
Sliding component is stated to be slidedly arranged on respectively in two sleeves and stretch out the corresponding sleeve respectively to connecting with the valve plate, it is described
Sliding component is equipped with annular abutment boss and is arranged with retracting spring, and the retracting spring is contained in the sleeve and one end
Be connected to it is described abutting boss on and the other end be connected to the sleeve far from the kinematic link end wall on.
4. two way seal gate valve as claimed in claim 3, it is characterised in that: the sliding component includes holddown spring and institute
It states the hinged piston portion of kinematic link and what is connect with the valve plate wears socket part, the piston portion is set with the socket part cunning of wearing
In in the sleeve, the abutting boss be formed in it is described wear in socket part, described holddown spring one end is abutted with the piston portion
And the other end is connected on the abutting boss.
5. two way seal gate valve as described in claim 3 or 4, it is characterised in that: it is convex that the sleeve lining is equipped with annular stop
Platform and the annular stop boss are located at one end close to the kinematic link of the sleeve.
6. two way seal gate valve as claimed in claim 2, it is characterised in that: the sliding component is cut with scissors with the corresponding valve plate
It connects.
7. two way seal gate valve as claimed in claim 2, it is characterised in that: be equipped with limited block and the limit in the valve chamber
Block is located at the side far from the executing agency of the supporting plate；The supporting plate and the limited block against when, two valve plates
It is opposite with two valve seats respectively.
8. two way seal gate valve as claimed in claim 7, it is characterised in that: one far from the executing agency of the supporting plate
Lateral plates are equipped with can be with the voussoir of the limited block wedge form.
9. two way seal gate valve as claimed in claim 2, it is characterised in that: under the sealing drive state, two transmissions
Connecting rod is on same straight line.
10. two way seal gate valve as described in claim 1, it is characterised in that: the executing agency includes being fixedly installed in institute
State the vavle shelf on valve body, the valve rod that is movably installed on the vavle shelf and connect with the transmission mechanism and for driving
The valve rod is along the execution driving unit itself being axially moved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821641003.3U CN208935434U (en) | 2018-10-10 | 2018-10-10 | Two way seal gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821641003.3U CN208935434U (en) | 2018-10-10 | 2018-10-10 | Two way seal gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208935434U true CN208935434U (en) | 2019-06-04 |
Family
ID=66724066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821641003.3U Active CN208935434U (en) | 2018-10-10 | 2018-10-10 | Two way seal gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208935434U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210224A (en) * | 2018-10-10 | 2019-01-15 | 中冶南方工程技术有限公司 | Two way seal gate valve |
| CN112728145A (en) * | 2020-12-21 | 2021-04-30 | 何松 | Double-sided gate valve |
-
2018
- 2018-10-10 CN CN201821641003.3U patent/CN208935434U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210224A (en) * | 2018-10-10 | 2019-01-15 | 中冶南方工程技术有限公司 | Two way seal gate valve |
| CN112728145A (en) * | 2020-12-21 | 2021-04-30 | 何松 | Double-sided gate valve |
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