CN102758925A - High pressure and low pressure combination gate valve - Google Patents
High pressure and low pressure combination gate valve Download PDFInfo
- Publication number
- CN102758925A CN102758925A CN2012102483661A CN201210248366A CN102758925A CN 102758925 A CN102758925 A CN 102758925A CN 2012102483661 A CN2012102483661 A CN 2012102483661A CN 201210248366 A CN201210248366 A CN 201210248366A CN 102758925 A CN102758925 A CN 102758925A
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- inserted piece
- sealed inserted
- flashboard
- slot
- valve
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Abstract
The invention discloses a high pressure and low pressure combination gate valve, which includes a valve body, a valve seat and a gate plate, wherein a spring and an O-shaped seal ring are arranged between the valve body and the valve seat, a slot is formed in the valve seat, a first seal insert is arranged in the slot, a second seal insert is arranged in the slot, and the distance from the outer end of the second seal insert to the gate plate is smaller than that from the first seal insert to the gate plate. The second seal insert is additionally arranged, and the distance from the outer end of the second seal insert to the gate plate is smaller than that from the first seal insert to the gate plate, so that the gate valve can be sealed under high pressure and low pressure work conditions, and the seal effect is better.
Description
Technical field
The present invention relates to a kind of valve, be specifically related to a kind of high low pressure and use gate valve with.
Background technique
Gate valve is a kind ofly to move as open-shut device and along valve seat axis normal direction with flashboard, and to realize the valve of switching motion, it is mainly used in flowing of control fluid.The moving direction of flashboard is vertical with the moving direction of fluid, and gate valve can only be made standard-sized sheet and complete shut-down, can not do to regulate and throttling.
The flashboard 3 that gate valve generally comprises valve body 1, valve seat 2 and seals is provided with spring 4 between valve body 1 and the valve seat 2, valve seat 2 can be under situation about being under pressure in valve body move left and right, also be provided with O-ring seals 5 between valve body 1 and the valve seat 2.Offer a slot on the existing valve seat 2, a plastic plug 6 is arranged, in the slot referring to shown in Figure 1; Plug-in unit exterior edge face and flashboard are conflicted and are realized sealing; But in actual use, under the low pressure situation, because the displacement distance of valve seat is little; Therefore be easy to cause between plug-in unit and flashboard, produce the gap, and then cause the sealing effect of gate valve not good.
Summary of the invention
The object of the invention provides a kind of high low pressure and uses gate valve with, through the improvement to structure, make gate valve under high low pressure, all can realize sealing, and sealing effect is better.
Technological scheme of the present invention is: a kind of high low pressure is used gate valve with; Comprise valve body, valve seat and flashboard; Said valve body and said valve base chamber are provided with spring and O-ring seals, offer slot on the said valve seat, are provided with first sealed inserted piece in the said slot; Also be provided with second sealed inserted piece in the said slot, the distance of the said second sealed inserted piece outer end to said flashboard is less than the distance of said first sealed inserted piece to said flashboard.Said first sealed inserted piece and second sealed inserted piece near.
Another kind of technological scheme offers second slot on the said valve seat, be provided with second sealed inserted piece in said second slot, and the distance of the said second sealed inserted piece outer end to said flashboard is less than the distance of said first sealed inserted piece to said flashboard.
Further technological scheme, said first sealed inserted piece is a hard plastic insert, said second sealed inserted piece is the soft plastic plug-in unit.
In the technique scheme, gate valve is made up of valve body, valve seat and flashboard, on valve seat, offers slot; First sealed inserted piece is set in the slot; First sealed inserted piece is a hard plastic insert, can select materials such as PTEE, NYLON, PEEK for use, and the first sealed inserted piece outer end and flashboard are conflicted and realized sealing.Preferred a kind of technological scheme is in slot, to set up second sealed inserted piece among the present invention, and the distance of flashboard is arrived less than the distance of the first sealed inserted piece outer end to flashboard in the second sealed inserted piece outer end, and second sealed inserted piece is the soft plastic plug-in unit, can select rubber material for use; Another kind of technological scheme is on valve body, to offer second slot in addition, and second sealed inserted piece is set in second slot, and the distance of flashboard is arrived in the second sealed inserted piece outer end less than the first sealed inserted piece outer end to the distance of flashboard.This gate valve is when the high pressure operating mode, because high pressure can make valve seat move to flashboard, first sealed inserted piece can be conflicted with flashboard and realized sealing, and this moment, second sealed inserted piece can be kept maintaining an equal level by the outer end of flashboard compression and its outer end and first sealed inserted piece; When the low pressure operating mode, because the distance of flashboard is arrived less than the distance of the first sealed inserted piece outer end to flashboard in the outer end of second sealed inserted piece, second sealed inserted piece can be conflicted with flashboard and realized sealing this moment.
Advantage of the present invention is:
1. the present invention is through setting up second sealed inserted piece, and the distance of flashboard is arrived less than the distance of first sealed inserted piece to flashboard in the second sealed inserted piece outer end, make gate valve under the high low pressure operating mode, all can realize sealing, and sealing effect is also better;
2. the present invention is simple in structure, and is easy to use, and is easy to realize, is fit to promote the use of.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
Fig. 1 is the prior art constructions schematic representation;
Fig. 2 is the structural representation of the embodiment of the invention one.
Wherein: 1, valve body; 2, valve seat; 3, flashboard; 4, spring; 5, O-ring seals; 6, plastic plug; 7, valve body; 8, valve seat; 9, flashboard; 10, spring; 11, O-ring seals; 12, first sealed inserted piece; 13, second sealed inserted piece.
Embodiment
Embodiment one: referring to shown in Figure 2; A kind of high low pressure is used gate valve with, comprises valve body 7, valve seat 8 and flashboard 9, and 8 of said valve body 7 and said valve seats are provided with spring 10 and O-ring seals 11; Offer slot on the said valve seat 8; Be provided with first sealed inserted piece 12 in the said slot, also be provided with second sealed inserted piece 13 in the said slot, the distance of said second sealed inserted piece 13 outer ends to said flashboard 9 is less than the distance of said first sealed inserted piece 12 to said flashboard 9; Said first sealed inserted piece 12 is a hard plastic insert, and said second sealed inserted piece 13 is the soft plastic plug-in unit.
Gate valve during fabrication, first sealed inserted piece fitted into slot after, second sealed inserted piece is being clamp-oned in the slot.Gate valve is in high pressure operating mode following time, and the first sealed inserted piece outer end and flashboard are conflicted and realized sealing, because high pressure can make that valve seat moves to flashboard, this moment, second sealed inserted piece can be kept fair with the first sealed inserted piece outer end by flashboard compression and its outer end; In low pressure operating mode following time and since the second sealed inserted piece outer end to the distance of flashboard less than the distance of first sealed inserted piece to flashboard, second sealed inserted piece can be conflicted with flashboard and realized sealing this moment.
Embodiment two: a kind of high low pressure is used gate valve with; Comprise valve body, valve seat and flashboard, said valve body and said valve base chamber are provided with spring and O-ring seals, offer slot on the said valve seat; Be provided with first sealed inserted piece in the said slot; Offer second slot on the said valve seat, be provided with second sealed inserted piece in said second slot, the distance of the said second sealed inserted piece outer end to said flashboard is less than the distance of said first sealed inserted piece to said flashboard; Said first sealed inserted piece is a hard plastic insert, and said second sealed inserted piece is the soft plastic plug-in unit.
Be to have two slots in the present embodiment, be provided with first sealed inserted piece in the slot, be provided with second sealed inserted piece in another slot, but its working principle is similar with embodiment one.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (4)
1. a high low pressure is used gate valve with; Comprise valve body (7), valve seat (8) and flashboard (9); Be provided with spring (10) and O-ring seals (11) between said valve body (7) and said valve seat (8), said valve seat offers slot on (8), is provided with first sealed inserted piece (12) in the said slot; It is characterized in that: also be provided with second sealed inserted piece (13) in the said slot, the distance of said second sealed inserted piece (13) outer end to said flashboard (9) is less than the distance of said first sealed inserted piece (12) to said flashboard (9).
2. a kind of high low pressure according to claim 1 is used gate valve with, it is characterized in that: said first sealed inserted piece (12) and second sealed inserted piece (13) near.
3. a kind of high low pressure according to claim 1 is used gate valve with; It is characterized in that: said valve seat offers second slot on (8); Be provided with second sealed inserted piece (13) in said second slot, the distance of said second sealed inserted piece (13) outer end to said flashboard (9) is less than the distance of said first sealed inserted piece (12) to said flashboard (9).
4. a kind of high low pressure according to claim 1 is used gate valve with, it is characterized in that: said first sealed inserted piece (12) is a hard plastic insert, and said second sealed inserted piece (13) is the soft plastic plug-in unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102483661A CN102758925A (en) | 2012-07-18 | 2012-07-18 | High pressure and low pressure combination gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102483661A CN102758925A (en) | 2012-07-18 | 2012-07-18 | High pressure and low pressure combination gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102758925A true CN102758925A (en) | 2012-10-31 |
Family
ID=47053500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102483661A Pending CN102758925A (en) | 2012-07-18 | 2012-07-18 | High pressure and low pressure combination gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102758925A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068821A (en) * | 1976-09-13 | 1978-01-17 | Acf Industries, Incorporated | Valve seat ring having a corner groove to receive an elastic seal ring |
| CN102062226A (en) * | 2011-01-27 | 2011-05-18 | 保一集团有限公司 | Multichannel sealing all-welded flat sluice valve |
| CN202100745U (en) * | 2011-06-16 | 2012-01-04 | 伯特利阀门集团有限公司 | Flat brake valve with high-sealing performance |
| CN202100747U (en) * | 2011-05-25 | 2012-01-04 | 上海浦东汉威阀门有限公司 | Multistage sealing valve seat of flat brake valve |
| CN102518823A (en) * | 2011-12-27 | 2012-06-27 | 四川精控阀门制造有限公司 | Valve seat sealing structure |
| CN202708143U (en) * | 2012-07-18 | 2013-01-30 | 嘉士凯（苏州）阀门配件有限公司 | High-low pressure mixed gate valve |
-
2012
- 2012-07-18 CN CN2012102483661A patent/CN102758925A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4068821A (en) * | 1976-09-13 | 1978-01-17 | Acf Industries, Incorporated | Valve seat ring having a corner groove to receive an elastic seal ring |
| CN102062226A (en) * | 2011-01-27 | 2011-05-18 | 保一集团有限公司 | Multichannel sealing all-welded flat sluice valve |
| CN202100747U (en) * | 2011-05-25 | 2012-01-04 | 上海浦东汉威阀门有限公司 | Multistage sealing valve seat of flat brake valve |
| CN202100745U (en) * | 2011-06-16 | 2012-01-04 | 伯特利阀门集团有限公司 | Flat brake valve with high-sealing performance |
| CN102518823A (en) * | 2011-12-27 | 2012-06-27 | 四川精控阀门制造有限公司 | Valve seat sealing structure |
| CN202708143U (en) * | 2012-07-18 | 2013-01-30 | 嘉士凯（苏州）阀门配件有限公司 | High-low pressure mixed gate valve |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121031 |