CN208311517U - Soft seal flat gate valve - Google Patents
Soft seal flat gate valve Download PDFInfo
- Publication number
- CN208311517U CN208311517U CN201820482360.3U CN201820482360U CN208311517U CN 208311517 U CN208311517 U CN 208311517U CN 201820482360 U CN201820482360 U CN 201820482360U CN 208311517 U CN208311517 U CN 208311517U
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- flashboard
- valve
- valve seat
- runner
- seal
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Abstract
The utility model relates to a kind of soft seal flat gate valves, including valve body, valve rod, flashboard and valve seat, runner is provided in valve body, valve rod drives the closing and unlatching of flashboard lifting composition runner, valve seat is set in runner and with flashboard in sealing cooperation, valve body is provided with the slideway slid to flashboard for valve seat and the return unit for resetting valve seat to flashboard, the anti-valve seat sliding mechanism for preventing valve seat to be detached from slideway under return unit and medium effect when flashboard rises to runner open state is provided in runner, the position of valve seat and ram seal cooperation is provided with seal groove, it is provided with compressive seal in the seal groove and compressive seal is limited in the screw thread of seal groove.Using the above scheme, the utility model, which provides a kind of guarantee valve, can stablize the soft seal flat gate valve used when medium is fluid.
Description
Technical field
The utility model relates to a kind of gate valves, and in particular to a kind of soft seal flat gate valve.
Background technique
Flat gate valve is mainly used for the industrial circles such as long-distance transport pipes, oil-gas storage, tank field, can be used for other industry necks
Domain, switch and flow control mainly as pipe-line system.Flat gate valve is compact-sized, and sexual valence is relatively high, and fluid resistance is small, stream
Road is unobstructed, energy saving, good seal performance, can effectively prevent the leakage of medium, has the function of two way seal, opens and closes light etc.
Feature, soft seal flat gate valve is in addition to the above advantages, additionally it is possible to for the mixture condition containing solid particle, metallic sealing section
With longer service life.
The flashboard of flat gate valve is designed to relatively thin plate, small volume lighter in weight, since the flashboard of flat gate valve does not have
There is the angle of wedge, in order to ensure the sealing of flashboard and valve seat, needs seat design passing through the medium in pipeline at moveable structure
The spring force of pressure and valve seat behind, so that enabling valve seat and flashboard to fit closely reaches sealing.However, in routine work
In, since medium and spring force act on valve seat excessive, valve seat can be made to skid off from slideway and enter runner, make flashboard and valve seat without
Method sealing cooperation, and then flat gate valve is caused to be unable to normal use.
In addition, flat gate valve is often applied to fluid media (medium), rigid seal this kind of application environment seal performance more
Shortcoming, can not meet sealing demand very well.
Summary of the invention
In view of the deficienciess of the prior art, it is stream that the purpose of this utility model is to provide a kind of guarantee valves in medium
The soft seal flat gate valve used can be stablized when body.
To achieve the above object, the utility model provides following technical solution: including valve body, valve rod, flashboard and valve seat,
Runner is provided in the valve body, the valve rod driving flashboard lifting constitutes the closing and unlatching of runner, the valve seat
It is set in runner and with flashboard in sealing cooperation, the valve body is provided with the slideway slid to flashboard for valve seat and by valve seat
The return unit resetted to flashboard, it is characterised in that: be provided in the runner and prevent when flashboard rises to runner open state
Only valve seat is detached from the anti-valve seat sliding mechanism of slideway under return unit and medium effect, and the valve seat is located at and matches with ram seal
The position of conjunction is provided with seal groove, and compressive seal is provided in the seal groove and compressive seal is limited in the spiral shell of seal groove
Line.
By using above-mentioned technical proposal, anti-valve seat sliding mechanism is added, valve seat is avoided to skid off from slideway, is guaranteeing valve just
It often uses for a long time, compressive seal has better sealing when answering fluid medium, and designs in the inside of seal groove
Screw thread enables compressive seal to be firmly embedded in valve when compressive seal is pressed into seal groove by being squeezed and deformed
In seat.
The utility model is further arranged to: the lateral wall for the part that the lower part of the flashboard cooperates with valve base sealing is in
Arc setting.
By using above-mentioned technical proposal, when valve wide open opens, it is bigger that the lateral wall of arc has valve seat and flashboard
Contact area, valve seat are less likely to be damaged, nor influence the negotiability of valve when full open.
The utility model is further arranged to: the flashboard bottom is provided with arc notch.
By using above-mentioned technical proposal, arc notch is added, flashboard is made to make that there is accurately adjusting flow function in rising
Energy.
The utility model is further arranged to: the anti-valve seat sliding mechanism includes stopper, the stopper one
Body is set to flashboard bottom, and the end face phase when flashboard is in runner open state with the top Relative sliding direction of valve seat
It supports.
By using above-mentioned technical proposal, it is integrally formed at the stopper of flashboard bottom, is in runner opening state in flashboard
When state, by constituting the limit of valve seat with offseting to stopper, avoid valve seat sliding at slideway under return unit and medium effect
Out.
The utility model is further arranged to: the anti-valve seat sliding mechanism includes cushion block, and the valve body is located at stream
Road bottom position corresponding with flashboard is provided with the installation base matched with cushion block card, the lower part Relative sliding direction of the valve seat
Two sides be symmetrically arranged with limit stabilizer blade, limit stabilizer blade and cushion block outer peripheral surface phase when the flashboard rises to runner open state
It supports.
By using above-mentioned technical proposal, cushion block is added, when flashboard is in runner open state, valve seat can be limited
Moving range, cooperation stopper realize limit up and down, improve the stability of limit, and installation base is matched with cushion block card to be installed,
Improve the convenience of dismounting.
The utility model is further arranged to: the anti-valve seat sliding mechanism includes the locating piece above cushion block,
The locating piece includes the mounting portion and limiting section set gradually from bottom to top, is vertically provided with peace in the middle part of the cushion block
Hole is filled, the mounting portion is threadedly engaged with mounting hole, and the limiting section lower end surface offsets with cushion block upper surface, the lock
Stabilizer blade is limited when plate rises to runner open state to offset with limiting section outer peripheral surface.
By using above-mentioned technical proposal, locating piece is added, on the one hand increases the mounting stability of cushion block, on the other hand increases
Add the contact area of limit stabilizer blade and cushion block, improve limit effect, is the installation of valve seat in addition, can first install cushion block when installation
Just limit is provided, is installed and then installs locating piece in valve seat, improve the convenience of installation and disassembly.
The utility model is further arranged to: the valve body rotation is provided with the valve rod of the driving stem lifting in rotation
Nut, the valve stem top are fixedly installed limited block, limited block lower end surface when the flashboard is in runner closed state
It offsets with valve stem nut upper surface.
By using above-mentioned technical proposal, the bottom of flashboard is arranged in common design, the closing limit of gate valve, works as flashboard
Bottom and runner when contacting valve close in place, since valve rod is elongated, flashboard is relatively thin, when closing forces are larger, easily cause
The deformation of valve rod and flashboard is bent, so as to cause the damage and seal failure of valve, in the present embodiment, by limited block and valve
Stem nut, which offsets, realizes that the closing of valve in place, the point of application is transferred between limited block and valve stem nut, to avoid completely
The deformation of valve rod and flashboard is bent.
The utility model is further arranged to: the flashboard, which is located at, is provided with T-slot with the junction of valve rod, described
Valve rod is provided with the T-shaped block positioned at T-slot, and the flashboard, which is located at T-slot both ends and is fixedly installed respectively, is limited in T-shaped block
Baffle in T-slot.
By using above-mentioned technical proposal, since flashboard is relatively thin, there are the possibility that flashboard and valve rod slip, T-shaped block cooperates T
Shape slot, it is ensured that the reliability of the two connection, and limited by baffle, further increase stability.
The utility model is further arranged to: the valve body is provided with greasing channel, and the greasing channel is provided with
The grease pouring valve that greasing channel is closed and opened is controlled, is provided with greasing hole in the valve seat, the greasing hole one end and greasing are logical
Road is mutually opened, and the other end extends to the sealing station of valve seat and flashboard.
By using above-mentioned technical proposal, when valve seat and gate sealing surface have damage that cannot seal, pass through control greasing
Valve makes stop-leak compound enter greasing hole, and stop-leak compound forms sealant in the sealing station of valve seat and flashboard, can be in case of emergency
Play the role of sealing.
The utility model is further arranged to: the valve seat, which is located at, is provided with the first O with the position of slideway sliding cooperation
Type sealing ring and the second O-ring seal, the position that the greasing hole and greasing channel are opened be set to the first O-ring seal and
Between second O-ring seal.
By using above-mentioned technical proposal, multiple O-ring seals both can increase the sealing performance between valve seat and slideway,
It can guarantee that stop-leak compound will not be leaked from the position that greasing hole and greasing channel are opened, simplify structure more.
The utility model is further described with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the structural schematic diagram one of specific embodiment of the present invention；
Fig. 2 is the enlarged drawing of A in Fig. 1；
Fig. 3 is the structural schematic diagram two of specific embodiment of the present invention；
Fig. 4 is the main view of valve seat in specific embodiment of the present invention;
Fig. 5 is the main view of flashboard in specific embodiment of the present invention.
Specific embodiment
As Figure 1-Figure 5, the utility model discloses a kind of soft seal flat gate valves, including valve body 1, valve rod 2, lock
Plate 3 and valve seat 4, are provided with runner 11 in valve body 1, and valve rod 2 drives the lifting of flashboard 3 to constitute the closing and unlatching of runner 11, valve seat 4
It is set in runner 11 and with flashboard 3 in sealing cooperation, valve body 1 is provided with the slideway 12 slid to flashboard 3 for valve seat 4 and by valve
The return units that seat 4 is resetted to flashboard 3, in specific embodiment of the present invention, the preferred spring 41 of the return unit, in runner 11
Be provided with prevents valve seat 4 to be detached from slideway 12 under return unit and medium effect when flashboard 3 rises to 11 open state of runner
Anti- valve seat sliding mechanism, valve seat 4, which is located at, is provided with seal groove 46 with the position of the sealing cooperation of flashboard 3, setting in the seal groove 46
There is compressive seal 47 and compressive seal 47 is limited in the screw thread 461 of seal groove, adds anti-valve seat sliding mechanism, avoid valve
Seat 4 is skidded off from slideway 12, guarantees that valve normally uses for a long time, and compressive seal has better when answering fluid medium
Leakproofness, and screw thread is devised on the inside of seal groove, when compressive seal is pressed into seal groove, made by extrusion deformation soft
Matter sealing element can be firmly embedded in valve seat.
The arc-shaped setting of lateral wall of the lower part of flashboard 3 and the part of the sealing cooperation of valve seat 4, when valve wide open opens, arc
The lateral wall of shape makes valve seat and flashboard have bigger contact area, and valve seat is less likely to be damaged, nor influences valve when full open
The negotiability of door.
3 bottom of flashboard is provided with arc notch 34, adds arc notch 34, and flashboard 3 is made to make to have in rising and accurately adjust
Amount of restriction function.
Anti- valve seat sliding mechanism includes stopper 31, and stopper 31 is integrally formed at 3 bottom of flashboard, and rises in flashboard 3
End face when to 11 open state of runner with the top Relative sliding direction of valve seat 4 offsets, and is integrally formed at the resistance of 3 bottom of flashboard
Block 31, by constituting the limit of valve seat 4 with offseting to stopper 31, is avoided when flashboard 3 rises to 11 open state of runner
Valve seat 4 skids off at slideway 12 under return unit and medium effect.
Anti- valve seat sliding mechanism includes cushion block 5, valve body 1 be located at 11 bottom of runner position corresponding with flashboard 3 be provided with
Cushion block 5 blocks the installation base 13 matched, and the two sides in the lower part Relative sliding direction of valve seat 4 are symmetrically arranged with limit stabilizer blade 42, flashboard 3
Stabilizer blade 42 is limited when rising to 11 open state of runner to offset with 5 outer peripheral surface of cushion block, cushion block 5 is added, when flashboard 3 rises to runner
When 11 open state, the moving range of valve seat 4 can be limited, cooperation stopper 31 realizes limit up and down, improves the stabilization of limit
Property, installation base, with being installed, improves the convenience of dismounting, the installation base 13 is by being located at 5 liang of cushion block with cushion block card
The convex block of side is constituted.
Anti- valve seat sliding mechanism includes the locating piece 51 positioned at 5 top of cushion block, and locating piece 51 includes successively setting from bottom to top
The mounting portion 511 and limiting section 512 set, 5 middle part of cushion block are vertically provided with mounting hole 52, mounting portion 511 and 52 spiral shell of mounting hole
Line cooperation, 512 lower end surface of limiting section offset with 5 upper surface of cushion block, and flashboard 3 limits stabilizer blade 42 when rising to 11 open state of runner
It offsets with 512 outer peripheral surface of limiting section, adds locating piece 51, on the one hand increase the mounting stability of cushion block 5, on the other hand increase limit
The contact area of position stabilizer blade 42 and cushion block 5, improves limit effect, is the peace of valve seat 4 in addition, can first install cushion block 5 when installation
Dress provides just limit, is installed and then installs locating piece 51 in valve seat 4, improve the convenience of installation and disassembly.
Valve body 1 rotates the valve stem nut 6 for being provided with that driving stem 2 is gone up and down in rotation, is fixedly installed at the top of valve rod 2 limited
Position block 21,21 lower end surface of limited block offsets with 6 upper surface of valve stem nut when flashboard 3 drops to 11 closed state of runner, common
The bottom of flashboard 3 is arranged in design, the closing limit of gate valve, and when the bottom of flashboard 3 is contacted with runner 11, valve is closed in place,
Since valve rod 2 is elongated, flashboard 3 is relatively thin, when closing forces are larger, the deformation bending of valve rod 2 and flashboard 3 is easily caused, to lead
The damage and seal failure of valve are caused, in the present embodiment, is offseted by limited block 21 and valve stem nut 6 and realizes the closing of valve
In place, the point of application is transferred between limited block 21 and valve stem nut 6, to avoid the deformation of valve rod 2 and flashboard 3 curved completely
It is bent.
Flashboard 3, which is located at, is provided with T-slot 32 with the junction of valve rod 2, and valve rod 2 is provided with the T-shaped block positioned at T-slot 32
22, flashboard 3 is located at 32 both ends of T-slot and is fixedly installed the baffle 33 being limited in T-shaped block 22 in T-slot 32 respectively, due to lock
Plate 3 is relatively thin, and there are the possibility that flashboard 3 and valve rod 2 slip, T-shaped block 22 cooperates T-slot 32, it is ensured that the reliability of the two connection, and
It is limited by baffle 33, further increases stability.
Valve body 1 is provided with greasing channel 14, and greasing channel 14 is provided with the greasing that control greasing channel 14 is closed and opened
Valve 15 is provided with greasing hole 43 in valve seat 4, which opens with 14 phase of greasing channel, and the other end extends to valve seat 4
Make to seal by controlling grease pouring valve 15 when valve seat 4 and 3 sealing surface of flashboard have damage that cannot seal with the sealing station of flashboard 3
Rouge enters greasing hole 43, and stop-leak compound forms sealant in the sealing station of valve seat 4 and flashboard 3, can in case of emergency play
The effect of sealing, the grease pouring valve 15 be can ball valve, can also be check valve.
Valve seat 4, which is located at, is provided with the first O-ring seal 44 and the second O-ring seal with the position of the sliding cooperation of slideway 12
45, the position that greasing hole 43 and greasing channel 14 are opened is set between the first O-ring seal 44 and the second O-ring seal 45,
Multiple O-ring seals both can increase the sealing performance between valve seat 4 and slideway 12, also can guarantee that stop-leak compound will not be from greasing hole 43
It is leaked with the position that greasing channel 14 is opened, simplifies structure more.
In addition, be related to the noun about orientation in specific embodiment of the present invention, for example, above and below, top, bottom, only
Expression relative positional relationship, and unspecified directions.
Claims (10)
1. a kind of soft seal flat gate valve, including valve body, valve rod, flashboard and valve seat, it is provided with runner in the valve body, it is described
Valve rod driving flashboard lifting constitute the closing and unlatching of runner, the valve seat is set in runner and matches with flashboard in sealing
It closes, the valve body is provided with the slideway slid to flashboard for valve seat and the return unit for resetting valve seat to flashboard, feature exist
In: being provided in the runner when flashboard rises to runner open state prevents valve seat from taking off under return unit and medium effect
Anti- valve seat sliding mechanism from slideway, the valve seat are located at the position cooperated with ram seal and are provided with seal groove, the sealing
It is provided with compressive seal in slot and compressive seal is limited in the screw thread of seal groove.
2. soft seal flat gate valve according to claim 1, it is characterised in that: the lower part of the flashboard and valve base sealing
The arc-shaped setting of the lateral wall of the part of cooperation.
3. soft seal flat gate valve according to claim 1, it is characterised in that: the flashboard bottom is provided with arc and lacks
Mouthful.
4. soft seal flat gate valve according to claim 1, it is characterised in that: the anti-valve seat sliding mechanism includes resistance
Block, the stopper are integrally formed at flashboard bottom, and when flashboard rises to runner open state and the top of valve seat
The end face in Relative sliding direction offsets.
5. soft seal flat gate valve according to claim 1, it is characterised in that: the anti-valve seat sliding mechanism includes pad
Block, the valve body are located at runner bottom position corresponding with flashboard and are provided with the installation base matched with cushion block card, the valve
The two sides in the lower part Relative sliding direction of seat are symmetrically arranged with limit stabilizer blade, and the flashboard rises to the runner open state time limit
Position stabilizer blade offsets with cushion block outer peripheral surface.
6. soft seal flat gate valve according to claim 3, it is characterised in that: the anti-valve seat sliding mechanism includes position
Locating piece above cushion block, the locating piece include the mounting portion and limiting section set gradually from bottom to top, the pad
It is vertically provided with mounting hole in the middle part of block, the mounting portion is threadedly engaged with mounting hole, the limiting section lower end surface and pad
Block upper surface offsets, and stabilizer blade is limited when the flashboard rises to runner open state and is offseted with limiting section outer peripheral surface.
7. soft seal flat gate valve according to claim 1 or 2 or 3 or 4, it is characterised in that: the valve body rotation is set
It is equipped with the valve stem nut of the driving stem lifting in rotation, the valve stem top is fixedly installed limited block, the flashboard
Limited block lower end surface offsets with valve stem nut upper surface when dropping to runner closed state.
8. soft seal flat gate valve according to claim 1 or 2 or 3 or 4, it is characterised in that: the flashboard be located at
The junction of valve rod is provided with T-slot, and the valve rod is provided with the T-shaped block positioned at T-slot, and the flashboard is located at T-slot
Both ends are fixedly installed the baffle being limited in T-shaped block in T-slot respectively.
9. soft seal flat gate valve according to claim 1 or 2 or 3 or 4, it is characterised in that: the valve body is provided with
Greasing channel, the greasing channel are provided with the grease pouring valve that control greasing channel is closed and opened, setting in the valve seat
There is greasing hole, which mutually opens with greasing channel, and the other end extends to the sealing station of valve seat and flashboard.
10. soft seal flat gate valve according to claim 9, it is characterised in that: the valve seat is located to be slid with slideway
The position of cooperation is provided with the first O-ring seal and the second O-ring seal, the position that the greasing hole and greasing channel are opened
It is set between the first O-ring seal and the second O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820482360.3U CN208311517U (en) | 2018-04-04 | 2018-04-04 | Soft seal flat gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820482360.3U CN208311517U (en) | 2018-04-04 | 2018-04-04 | Soft seal flat gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208311517U true CN208311517U (en) | 2019-01-01 |
Family
ID=64719122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820482360.3U Active CN208311517U (en) | 2018-04-04 | 2018-04-04 | Soft seal flat gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208311517U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877088A (en) * | 2022-04-28 | 2022-08-09 | 上海高中压阀门股份有限公司 | Flat gate valve with excellent sealing performance under low pressure condition |
-
2018
- 2018-04-04 CN CN201820482360.3U patent/CN208311517U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877088A (en) * | 2022-04-28 | 2022-08-09 | 上海高中压阀门股份有限公司 | Flat gate valve with excellent sealing performance under low pressure condition |
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