CN207648176U - Soft or hard two-stage sealing gate valve - Google Patents
Soft or hard two-stage sealing gate valve Download PDFInfo
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- CN207648176U CN207648176U CN201721897634.7U CN201721897634U CN207648176U CN 207648176 U CN207648176 U CN 207648176U CN 201721897634 U CN201721897634 U CN 201721897634U CN 207648176 U CN207648176 U CN 207648176U
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Abstract
The utility model discloses a kind of soft or hard two-stage sealing gate valves, including valve body, flashboard, valve rod, valve deck, valve stem nut, handwheel, locking nut, flashboard is wedge-type single shutter, it is provided with and the matched wedge shaped passage of flashboard in the middle part of valve body, wedge shaped passage is communicated with inlet and outlet runner, flashboard cooperatively forms gate sealing surface and valve body sealing surface with wedge type chamber, the hard sealing element of flashboard is arranged in gate sealing surface, soft or hard two-stage sealing element is arranged in valve body sealing surface, primary seal is hard sealing element, second seal member is soft seal, flashboard is connect by T-slot with valve rod lower end, it is connected using packing seal between valve rod and valve deck, valve rod top is threadedly coupled with valve stem nut, handwheel is installed on valve stem nut, locking nut is provided on handwheel.The utility model patent provides a kind of soft or hard two-stage sealing gate valve, and reasonable design, simple and compact for structure, good seal performance, service life are long, and overall cost is low, and pipe safety is high.
Description
Technical field
The utility model is related to a kind of technical field of valve, more particularly to soft or hard two-stage sealing gate valve.
Background technology
Gate valve originates from the 1830's Mo, and by nearly development in 180 years, the design of gate valve is at this stage quite
Maturation disclosure satisfy that most of working condition requirement, and there are poor sealing performances for traditional gate valve at present, easily reveal, operational torque is big, causes
The service life of gate valve is short, and the safety of conduit running is low.
Development key at this stage is how to improve the sealing performance of valve, reduces the operational torque of valve, extends valve
The service life of door, ensures the safety of conduit running.
Utility model content
In order to overcome the shortcomings of that existing research, the utility model patent provide a kind of soft or hard two-stage sealing gate valve, design
Rationally, simple and compact for structure, good seal performance, service life are long, and overall cost is low, and pipe safety is high.To realize above-mentioned work(
Can, the above-mentioned technical problem of the utility model is mainly to be addressed by following technical proposals：
The utility model discloses a kind of soft or hard two-stage sealing gate valves, including valve body, flashboard, valve rod, valve deck, valve rod spiral shell
Mother, handwheel, locking nut, flashboard are wedge-type single shutter, are provided with and the matched wedge shaped passage of flashboard, wedge shaped passage in the middle part of valve body
It is communicated with inlet and outlet runner, flashboard cooperatively forms gate sealing surface and valve body sealing surface with wedge type chamber, and lock is arranged in gate sealing surface
Soft or hard two-stage sealing element is arranged in the hard sealing element of plate, valve body sealing surface, and primary seal is hard sealing element, and second seal member is soft close
Sealing, flashboard are connect by T-slot with valve rod lower end, are connected using packing seal between valve rod and valve deck, valve rod top and valve
Stem nut is threadedly coupled, and is equipped with handwheel on valve stem nut, locking nut is provided on handwheel.
Further, the hard sealing element is located at soft seal close to the side of inlet and outlet runner axial line.
Further, the soft seal is that the dovetail groove being opened in valve body sealing surface and fixation are filled in dovetail groove
Sealing material.
Further, the sealing material is PTFE, and PTFE is integral sintered to be fixed in dovetail groove.
Further, the sealing material is rubber, and rubber, which integrally vulcanizes, to be fixed in dovetail groove.
Further, the soft sealing face of the soft seal is in the crown sealing surface of circle.
Further, the hard sealing element uses built-up welding stainless steel, hard alloy on valve body sealing surface.
Further, the soft sealing face of the soft seal than valve body sealing surface protrusion, the hard sealing surface of hard sealing element with
Valve body sealing surface is concordant.
Further, the hard sealing element of the flashboard is built-up welding stainless steel, hard alloy in gate sealing surface.
Further, configuration is equipped with needle bearing and lubricating cup in the valve stem nut, and lubricant grease is noted in lubricating cup.
The operation principle and process of utility model.
When gate valve is in full open position, medium is flowed to from the import of valve body and is exported, the wedge shaped passage of flashboard and valve body
In discrete state.When needing to completely close gate valve, by rotate handwheel driving stem nut rotation to ovable valve stem to
Lower movement, valve rod move downward wedge-shaped single disc and are gradually matched with wedgy passage, the soft seal of flashboard hard sealing element and valve body
It is affixed to merge and is expressed to the crown soft sealing face of circle, there are one compressions between each other with the hard sealing element of flashboard for the crown soft sealing face of circle
Power makes flashboard be sealed with the hard sealing surface of valve body, to realize the flowing function of cut-out medium.
Soft or hard two-stage sealing element is arranged in valve body sealing surface, and primary seal is hard sealing element, and second seal member is soft seal
Part, soft seal are the dovetail groove being opened in valve body sealing surface and the fixed sealing material being filled in dovetail groove.By soft or hard
The combined use of sealing ensure that zero leakage of sealing surface, especially suitable for the stronger occasion of the permeability such as gas medium, greatly
Improve conduit running safety greatly.
The sealing material of soft seal is using soft materials such as PTFE, rubber, and when using PTFE, PTFE seal material is whole
It is sintered in dovetail groove and is formed the soft sealing face of valve body；When using rubber, rubber packing material integrally vulcanizes in dovetail groove
And form the soft sealing face of valve body.The secured of soft seal and valve body is can guarantee by dovetail groove and integral sintered, sulfuration process
In conjunction with, it is not easily to fall off.
Hard sealing element is located at soft seal close to the side of inlet and outlet runner axial line, and the soft sealing face of soft seal is in circle
Crown sealing surface.The crown sealing surface of circular arc can guarantee that compressing force is concentrated mainly on circle when flashboard closes compression soft seal
Arc bizet position will not influence dovetail groove location in turn, at the same the crown sealing surface of circular arc will not be pressurized again after compression deformation squeeze into it is hard
On sealing surface, to ensure that good sealing performance.
Valve rod drives nut to use upper dress formula valve stem nut, and increases needle bearing, substitute conventional thrust ball bearing and
The design of bearing-free increases grease lubrication, substantially reduces the driving moment of valve, reduces the structure ruler at driving nut position
It is very little, material and space are saved, cost is reduced.
The soft or hard two-stage sealing gate valve of the utility model is suitable for temperature and is not higher than 200 degrees Celsius, the field without granule medium
It closes, the occasion stringent to Gate-valve sealing performance requirement, especially suitable for gas medium.
The beneficial effects of the utility model：
1, soft or hard two-stage sealing element, primary seal is arranged in the soft or hard two-stage sealing gate valve of the utility model, valve body sealing surface
Part is hard sealing element, and second seal member is soft seal, and zero leakage of sealing surface is ensure that by the combined use of soft and hard seal,
Especially suitable for the stronger occasion of the permeability such as gas medium, conduit running safety is substantially increased.
2, the sealing material of the soft or hard two-stage sealing gate valve of the utility model, soft seal is soft using PTFE, rubber etc.
Material.When using PTFE, PTFE seal material is integral sintered in dovetail groove and to form the soft sealing face of valve body；Using rubber
When, rubber packing material integrally vulcanizes in dovetail groove and forms the soft sealing face of valve body.Pass through dovetail groove and integral sintered, sulphur
Chemical industry skill can guarantee the strong bonded, not easily to fall off of soft seal and valve body.
3, the soft or hard two-stage sealing gate valve of the utility model, soft sealing face are that the crown sealing surface of circular arc can guarantee in flashboard pass
When closing compression soft seal, compressing force is concentrated mainly on circular arc bizet position will not influence dovetail groove location in turn, simultaneously circle
The crown sealing surface of arc will not be pressurized after compression deformation and squeeze on hard sealing surface again, to ensure that good sealing performance.
4, the soft or hard two-stage sealing gate valve of the utility model, valve rod drives nut to use upper dress formula valve stem nut, and increases
Needle bearing substitutes the design of conventional thrust ball bearing and bearing-free, increases grease lubrication, substantially reduces the driving force of valve
Square reduces the structure size at driving nut position, saves space, reduce cost.
5, the soft or hard two-stage sealing gate valve design of the utility model is reasonable, and simple and compact for structure, good seal performance uses the longevity
Life length, overall cost is low, and pipe safety is high.
Description of the drawings
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, other drawings may also be obtained based on these drawings.
Fig. 1 is the soft or hard two-stage sealing gate valve structure schematic diagram of the utility model.
Fig. 2 is the positions A flashboard and the enlarged diagram before valve seal in Fig. 1.
Fig. 3 is the positions A flashboard and the enlarged diagram after valve seal in Fig. 1.
In figure：1, valve body；11, wedge shaped passage；12, valve body sealing surface；13, hard sealing element；131, hard sealing surface；14、
Soft seal；141, dovetail groove；142, sealing material；143, soft sealing face；2, flashboard；21, gate sealing surface；22, flashboard is hard
Sealing element；3, valve rod；4, valve deck；5, valve stem nut；6, handwheel；7, locking nut；8, needle bearing；9, lubricating cup.
Specific implementation mode
The preferred embodiment of the utility model is described in detail below in conjunction with the accompanying drawings, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, it is apparent clear to be made to the scope of protection of the utility model
Define.
As shown in Figs. 1-3, the utility model discloses a kind of soft or hard two-stage sealing gate valves, including valve body 1, flashboard 2, valve rod
3, valve deck 4, valve stem nut 5, handwheel 6, locking nut 7, flashboard 2 are wedge-type single shutter, and the middle part of valve body 1 is provided with and 2, flashboard
The wedge shaped passage 11 matched, wedge shaped passage 11 are communicated with inlet and outlet runner, and flashboard 2 cooperatively forms gate sealing surface 21 with wedge type chamber 11
With valve body sealing surface 12, the hard sealing element 22 of flashboard is arranged in gate sealing surface 21, and soft or hard two-stage sealing element is arranged in valve body sealing surface 12,
Primary seal is hard sealing element 13, and second seal member is soft seal 14, and flashboard 2 is connect by T-slot with 3 lower end of valve rod,
It is connected using packing seal between valve rod 3 and valve deck 4,3 top of valve rod is threadedly coupled with valve stem nut 5, is installed on valve stem nut 5
There is handwheel 6, locking nut 7 is provided on handwheel 6.
The hard sealing element 13 is located at soft seal 14 close to the side of inlet and outlet runner axial line.
The soft seal 14 is that the dovetail groove 141 being opened in valve body sealing surface 12 and fixation are filled in dovetail groove 141
Sealing material 142.
The sealing material 142 is PTFE, and PTFE is integral sintered to be fixed in dovetail groove 141.
The sealing material 142 is rubber, and rubber, which integrally vulcanizes, to be fixed in dovetail groove 141.
The soft sealing face 143 of the soft seal 14 is in the crown sealing surface of circle.
The hard sealing element 13 is using built-up welding stainless steel, hard alloy on valve body sealing surface 12.
The soft sealing face 143 of the soft seal 14 is than 12 protrusion of valve body sealing surface, the hard sealing surface 131 of hard sealing element 13
It is concordant with valve body sealing surface 12.
The hard sealing element 22 of flashboard is built-up welding stainless steel, hard alloy in gate sealing surface 21.
Configuration is equipped with needle bearing 8 and lubricating cup 9 in the valve stem nut 5, and lubricant grease is noted in lubricating cup 9.
The operation principle and process of utility model.
When gate valve is in full open position, medium is flowed to from the import of valve body 1 and is exported, and flashboard 2 and the wedge type of valve body 1 are logical
Road 11 is in discrete state.When needing to completely close gate valve, by rotating the rotation of 6 driving stem nut 5 of handwheel to drive
Valve rod 3 moves downward, and valve rod 3 moves downward wedge-shaped single disc 1 and gradually matched with wedgy passage 11, the hard sealing element 22 of flashboard and valve
The soft seal 14 of body 2, which is affixed to merge, is expressed to the crown soft sealing face 143 of circle, and the crown soft sealing face 143 of circle and flashboard are firmly close
There are one compressing forces between each other for sealing 22, and flashboard 2 is made to be sealed with 1 hard sealing surface 131 of valve body, to realize the stream of cut-out medium
Dynamic function.
Soft or hard two-stage sealing element is arranged in valve body sealing surface 12, and primary seal is hard sealing element 13, and second seal member is soft
Sealing element 14, soft seal 14 be the dovetail groove 141 that is opened in valve body sealing surface 12 and it is fixed be filled in it is close in dovetail groove 141
Closure material 142.Zero leakage that ensure that sealing surface by the combined use of soft and hard seal, especially suitable for infiltrations such as gas mediums
The stronger occasion of property, substantially increases conduit running safety.
The sealing material of soft seal is using soft materials such as PTFE, rubber, and when using PTFE, PTFE seal material is whole
It is sintered in dovetail groove and is formed the soft sealing face 143 of valve body 1；When using rubber, rubber packing material integrally vulcanizes in dovetail
Slot is interior and forms the soft sealing face 143 of valve body 1.Soft seal 14 is can guarantee by dovetail groove 141 and integral sintered, sulfuration process
It is strong bonded, not easily to fall off with valve body 1.
Hard sealing element 13 is located at soft seal 14 close to the side of inlet and outlet runner axial line, the soft seal of soft seal 14
Face 143 is in the crown sealing surface of circle.The crown sealing surface of circular arc can guarantee flashboard 2 close compression soft seal 14 when, compressing force
141 position of dovetail groove will not be influenced in turn by being concentrated mainly on circular arc bizet position, while the crown sealing surface of circular arc will not be pressurized again
It is squeezed into after compression deformation on hard sealing surface 131, to ensure that good sealing performance.
Valve rod 3 drives nut to use upper dress formula valve stem nut 5, and increases needle bearing 8, substitutes conventional thrust ball bearing
With the design of bearing-free, increase grease lubrication, substantially reduce the driving moment of valve, reduces the structure ruler at driving nut position
It is very little, material and space are saved, cost is reduced.
The soft or hard two-stage sealing gate valve of the utility model is suitable for temperature and is not higher than 200 degrees Celsius, the field without granule medium
It closes, the occasion stringent to Gate-valve sealing performance requirement, especially suitable for gas medium.
The beneficial effects of the utility model：
1, the soft or hard two-stage sealing gate valve of the utility model, soft or hard two-stage sealing element is arranged in valve body sealing surface 12, primary close
Sealing is hard sealing element 13, and second seal member is soft seal 14, ensure that sealing surface by the combined use of soft and hard seal
Zero leakage, especially suitable for the stronger occasion of the permeability such as gas medium, substantially increases conduit running safety.
2, the sealing material of the soft or hard two-stage sealing gate valve of the utility model, soft seal is soft using PTFE, rubber etc.
Material.When using PTFE, PTFE seal material is integral sintered in dovetail groove and to form the soft sealing face 143 of valve body 1；Using rubber
When glue, rubber packing material integrally vulcanizes in dovetail groove and forms the soft sealing face 143 of valve body 1.By dovetail groove 141 and whole
Body sintering, sulfuration process can guarantee the strong bonded, not easily to fall off of soft seal 14 and valve body 1.
3, the soft or hard two-stage sealing gate valve of the utility model, soft sealing face are that the crown sealing surface of circular arc can guarantee in flashboard 2
When closing compression soft seal 14, compressing force is concentrated mainly on circular arc bizet position will not influence 141 position of dovetail groove in turn,
The crown sealing surface of circular arc will not be pressurized after compression deformation and squeeze on hard sealing surface 131 again simultaneously, good close to ensure that
Sealing property.
4, the soft or hard two-stage sealing gate valve of the utility model, valve rod drives nut to use upper dress formula valve stem nut, and increases
Needle bearing substitutes the design of conventional thrust ball bearing and bearing-free, increases grease lubrication, substantially reduces the driving force of valve
Square reduces the structure size at driving nut position, saves space, reduce cost.
5, the soft or hard two-stage sealing gate valve design of the utility model is reasonable, and simple and compact for structure, good seal performance uses the longevity
Life length, overall cost is low, and pipe safety is high.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any change or replacement expected without creative work should be covered within the scope of the utility model.
Therefore, the scope of protection of the utility model should be determined by the scope of protection defined in the claims.
Claims (10)
1. soft or hard two-stage sealing gate valve, which is characterized in that including valve body (1), flashboard (2), valve rod (3), valve deck (4), valve rod spiral shell
Female (5), handwheel (6), locking nut (7), flashboard (2) are wedge-type single shutter, are provided in the middle part of valve body (1) and are matched with flashboard (2)
Wedge shaped passage (11), wedge shaped passage (11) communicates with inlet and outlet runner, and it is close that flashboard (2) with wedge type chamber (11) cooperatively forms flashboard
The hard sealing element of flashboard (22) is arranged in cover (21) and valve body sealing surface (12), gate sealing surface (21), and valve body sealing surface (12) is set
Soft or hard two-stage sealing element is set, primary seal is hard sealing element (13), and second seal member is soft seal (14), and flashboard (2) is logical
It crosses T-slot to connect with valve rod (3) lower end, be connect using packing seal between valve rod (3) and valve deck (4), valve rod (3) top and valve
Stem nut (5) is threadedly coupled, and is equipped with handwheel (6) on valve stem nut (5), locking nut (7) is provided on handwheel (6).
2. soft or hard two-stage sealing gate valve according to claim 1, which is characterized in that the hard sealing element (13) is located at soft close
Sealing (14) is close to the side of inlet and outlet runner axial line.
3. soft or hard two-stage sealing gate valve according to claim 1, which is characterized in that the soft seal (14) is to be opened in valve
Dovetail groove (141) in body sealing surface (12) and the fixed sealing material (142) being filled in dovetail groove (141).
4. soft or hard two-stage sealing gate valve according to claim 3, which is characterized in that the sealing material (142) is PTFE,
PTFE is integral sintered to be fixed in dovetail groove (141).
5. soft or hard two-stage sealing gate valve according to claim 3, which is characterized in that the sealing material (142) is rubber,
Rubber, which integrally vulcanizes, to be fixed in dovetail groove (141).
6. soft or hard two-stage sealing gate valve according to claim 1, which is characterized in that the soft seal of the soft seal (14)
Face (143) is in the crown sealing surface of circle.
7. soft or hard two-stage sealing gate valve according to claim 1, which is characterized in that the hard sealing element (13) is using in valve
Built-up welding stainless steel, hard alloy on body sealing surface (12).
8. soft or hard two-stage sealing gate valve according to claim 6, which is characterized in that the soft seal of the soft seal (14)
Than valve body sealing surface (12) protrusion, the hard sealing surface (131) of hard sealing element (13) is concordant with valve body sealing surface (12) in face (143).
9. soft or hard two-stage sealing gate valve according to claim 1, which is characterized in that the hard sealing element of flashboard (22) be
Built-up welding stainless steel, hard alloy in gate sealing surface (21).
10. soft or hard two-stage sealing gate valve according to claim 1, which is characterized in that configuration peace in the valve stem nut (5)
Equipped with needle bearing (8) and lubricating cup (9), lubricant grease is noted in lubricating cup (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721897634.7U CN207648176U (en) | 2017-12-29 | 2017-12-29 | Soft or hard two-stage sealing gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721897634.7U CN207648176U (en) | 2017-12-29 | 2017-12-29 | Soft or hard two-stage sealing gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207648176U true CN207648176U (en) | 2018-07-24 |
Family
ID=62876666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721897634.7U Active CN207648176U (en) | 2017-12-29 | 2017-12-29 | Soft or hard two-stage sealing gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207648176U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210221A (en) * | 2018-11-01 | 2019-01-15 | 江苏圣泰阀门有限公司 | A kind of heavy caliber veneer flap type |
-
2017
- 2017-12-29 CN CN201721897634.7U patent/CN207648176U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210221A (en) * | 2018-11-01 | 2019-01-15 | 江苏圣泰阀门有限公司 | A kind of heavy caliber veneer flap type |
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