CN203023508U - Balance type high-pressure stop valve - Google Patents
Balance type high-pressure stop valve Download PDFInfo
- Publication number
- CN203023508U CN203023508U CN 201220740567 CN201220740567U CN203023508U CN 203023508 U CN203023508 U CN 203023508U CN 201220740567 CN201220740567 CN 201220740567 CN 201220740567 U CN201220740567 U CN 201220740567U CN 203023508 U CN203023508 U CN 203023508U
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- valve
- valve rod
- sealing
- pressure stop
- transmission nut
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- Expired - Fee Related
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Abstract
The utility model discloses a balance type high-pressure stop valve which comprises a guide sealing mechanism composed of a valve clack and a valve rod, wherein an outer sealing sleeve mechanism is arranged at the joint of the guide sealing mechanism and the valve body; the upper part of the guide sealing mechanism is connected with a transmission mechanism; a transmission nut is fixed in the transmission mechanism; the transmission nut is in threaded connection with the valve rod; thrust bearings are mounted above and below the transmission nut; and the valve rod is provided with a valve rod anti-rotation mechanism for preventing the valve rod from rotating. The balance type high-pressure stop valve disclosed by the utility model has the advantages that 1) a valve door is opened and started in a conical sealing manner, and rigid sealing such as flat sealing, cutter-shaped sealing, conical sealing and the like can be adopted when the gas pressure is 45MPa, wherein the required sealing force is the lowest by adopting conical sealing in the condition of same drift diameter; 2) by adopting a balance cavity structure, the medium force on the outer circle of the valve clack is balanced, and only the medium force on the section of the valve rod is left; and 3) an O-shaped ring is made from polyurethane rubber, F4 is sprayed to the surface, and the friction force against the O-shaped ring can be reduced when the valve clack moves up and down.
Description
Technical field
The utility model relates to a kind of stop valve that is applicable to Aero-Space high-pressure liquid system, ground installation and oil, chemical field.
Background technique
At present, as shown in Figure 1 and Figure 2, high-pressure stop valve mainly is divided into angle shut-off valve and through shut off valve both at home and abroad, and the basic structure of every kind of stop valve is consistent with seal form, and the high-pressure liquid stop valve mainly is comprised of following component: drive link 101; Gland 102; Valve body 103; Stuffing box gland 104; Backing plate 105; Valve rod 106; Nut 107; Handle 108; Dust ring 109; Round section joint ring 110; Round section joint ring 111 etc.Its working principle is: by left rotation and right rotation handle 108, the band ovable valve stem 106, flap 112 is moved up and down, realize valve unlatching, close.There is following defective in this high-pressure stop valve due to the restriction that is subjected to its structure and seal form:
1) seal form of the valve rod of this valve and valve gap is end face seal, valve rod will realize that initial sealing must apply certain axial pre tightening force, valve rod can be subject to high-pressure medium to the powerful end thrust of valve rod when work simultaneously, the force of sliding friction that also has seal ring frictional force and end thrust to produce is handled difficulty and motion thread is occured often and kills phenomenon and damage threshold during therefore this valve work.
2) flap of this valve does not have accurate guiding and rotation-preventing mechanism, so the contact position of valve disc sealing surface and valve body sealing surface changes often.This variation can cause the unstable working condition of whole valve body working seal face, affects the sealability of valve.
Therefore, should not adopt this kind structural type under high-pressure work.
Summary of the invention
The purpose of this utility model is to provide a kind of easy to operate, good seal performance, is fit to the balanced high pressure stop valve of Aero-Space, petrochemical industry high-pressure work.
For achieving the above object, the utility model is by the following technical solutions:
A kind of balanced high pressure stop valve, it comprises the pilot seal mechanism that is made of flap and valve rod, outer seal sleeve mechanism is set in the joint of pilot seal mechanism and valve body, and the top of pilot seal mechanism is connected with driving mechanism, be fixedly installed transmission nut in described driving mechanism, transmission nut is connected with threaded stem, and transmission nut up and down installed thrust bearing; Be provided with the anti-rotation mechanism of valve rod that prevents that valve rod from rotating on described valve rod.
The anti-rotation mechanism of described valve rod comprises the key that is arranged in the stem side square groove, and key slides up and down and is arranged in the keyway that stops spin-block, and only spin-block is fixed on the outer cover of valve body.
Between described transmission nut and outer cover, dust ring is set.
Described outer seal sleeve mechanism refers to: between valve body and valve rod, stuffing box gland is set, at least one "O"-ring of stuffing box gland overcoat.
It is conical surface seal between described flap and valve base joint.
Between valve base joint and valve body, seal ring is set.
The top of described valve rod is connected with indicating arm.
Adopt the utility model of technique scheme, have the following advantages:
1), valve opening and closing adopts cone seal, gas can adopt the rigid seals such as plane sealing, knife-edge sealing, cone sealing under 45Mpa pressure, wherein adopt to bore to be sealed in identical stimulating the menstrual flow down, required must sealing force be minimum;
2), adopt the counter balance pocket structure, balance the suffered medium power of flap cylindrical, the suffered medium power in surplus valve rod cross section only;
3), the round section joint ring material adopts urethane rubber, surface spraying F4 is in the time of can reducing flap and move up and down and the frictional force of round section joint ring;
4), valve end is provided with boss, by key, only spin-block etc. is connected with valve rod and prevents that valve rod from rotating with transmission nut, and valve rod is only moved up and down under the effect of transmission nut screw thread power;
5), transmission nut loads onto thrust-bearing up and down, thrust-bearing bears the axial forces such as the contained medium power of valve rod, frictional force, sealing force, in this case, the change sliding friction is rolling friction, frictional force reduces a lot, makes the handle left-right rotation more laborsaving;
6), increase on outer cover and loosen screw, prevent that outer cover from rotating and coming off, safety coefficient is high;
7), whole through finite element analysis, on the basis that guarantees valve performance, more reasonable structure, compactness;
8), pipe joint, fastening piece etc. adopt the aerospace standard part, and are safe and reliable.
Description of drawings
Fig. 1 is the structural representation of existing angle shut-off valve.
Fig. 2 is the structural representation of existing through shut off valve.
Fig. 3 is the structural representation of the utility model balanced type right angle high-pressure stop valve.
Fig. 4 is the structural representation of the straight-through high-pressure stop valve of the utility model balanced type.
Embodiment
As shown in Figure 3, Figure 4, a kind of balanced high pressure stop valve, it comprises the pilot seal mechanism that is made of flap 14 and valve rod 17, and outer seal sleeve mechanism is set in the joint of pilot seal mechanism and valve body 9, and the top of pilot seal mechanism is connected with driving mechanism.
Be fixedly installed transmission nut 2 in driving mechanism, transmission nut 2 both sides are provided with handle 1, and its top is fixing by fastening piece 3.The bottom of transmission nut 2 is threaded with valve rod 17, because transmission nut 2 is fixing, so when rotary drive nut 2, valve rod 17 moves up and down.Be the mobile position of indication valve rod 17, the top of above-mentioned valve rod 17 is connected with indicating arm 20.And transmission nut is installed thrust bearing 6 Shang Xia 2, and thrust-bearing 6 bears the axial forces such as the contained medium power of valve rod 17, frictional force, sealing force, and in this case, the change sliding friction is rolling friction, and frictional force reduces a lot, makes the handle left-right rotation more laborsaving.For preventing that thrust-bearing 6 from entering dust, between transmission nut 2 and outer cover 5, dust ring 4 is set.
For prevent that valve rod 17 from rotating with transmission nut 2 in moving up and down process, be provided with the anti-rotation mechanism of valve rod that prevents that valve rod from rotating on above-mentioned valve rod 17, the anti-rotation mechanism of valve rod comprises the key 8 that is arranged in valve rod 17 side grooves, key 8 slides up and down and is arranged in the keyway that stops spin-block 7, only spin-block 7 is fixed on the outer cover 5 of valve body, increase on outer cover 5 and loosen screw 19, prevent that outer cover 5 from rotating and coming off, safety coefficient is high.Valve body 9 ends are provided with boss, by key 8, only spin-block 7 etc. is connected with valve rod 17, prevents that valve rod 17 from transmission nut 2 rotations, only move up and down valve rod 17 under the effect of transmission nut 2 screw thread power.
Outer seal sleeve mechanism refers to: between valve body 9 and valve rod 17, stuffing box gland 18 is set, at least one "O"-ring 10 of stuffing box gland 18 overcoats.
The interior baffle ring 15 and fixing by screw 16 that arranges of flap 14, and be conical surface seal between flap 14 and valve base joint 12, gas is under 45Mpa pressure, can adopt the rigid seals such as plane sealing, knife-edge sealing, cone sealing, wherein adopt cone to be sealed in identical stimulating the menstrual flow down, required must sealing force be minimum.
Bottom connecting valve seat joint 12 and the pipe joint 11 of valve body 9, and between valve base joint 12 and valve body 9, seal ring 13 is set.
Assembly process of the present utility model is: valve rod 17 is packed in flap 14, is pressed into baffle ring 15 on valve rod 17 rear fixing with screw 19, the round section joint ring 10 of packing in flap 14 round section joint ring grooves; The assembly parts such as valve rod are packed into below valve body 9; Loaded onto the stuffing box gland 18 of round section joint ring above valve body 9, stuffing box gland 18 is installed to the position, valve rod 17 is pulled out; Dress key 8 on valve rod 17; On valve rod 17, dress stops spin-block 7, dress indicating arm 20 on valve rod 17; 6 one of dress thrust-bearings; Dress transmission nut 2 on thrust-bearing 6; Another part thrust-bearing 6 of dress on transmission nut 2; Outer cover 5 dust ring 4 of packing into; Outer cover 5 is enclosed within on transmission nut 2 tightens at valve body 9; On outer cover 5, cartridge screw 19 is tightened; Handle 1 is contained on transmission nut 2, steps up with fastening piece 3; Load onto below valve body 7 with the valve base joint 12 of seal ring 13 and tighten; Valve seat 9 sides are loaded onto pipe joint 11 and are tightened, and whole assembling is complete.It is identical that Fig. 4 assembles principle fundamental sum Fig. 3.
Working principle of the present utility model is: fastening piece 3 steps up handle 1, drive transmission nut 2 during handle 1 left-right rotation, at this moment transmission nut 2 and valve rod 17 relatively rotate valve rod 17(valve rod are connected with spin-block 7 only by key 8, stop spin-block and are connected and are positioned with the boss of valve body 9 upper-end surfaces) move up and down under the guiding of screw thread.Realize thus the keying of valve.When the sealing surface of the valve base joint on valve clack sealing surface and valve body contacted, valve was closed; When the valve base joint sealing surface on valve clack sealing surface and valve body was thrown off, valve was unlocked.Fig. 3 is identical for Fig. 4 principle fundamental sum.
Claims (7)
1. balanced high pressure stop valve, it comprises the pilot seal mechanism that is made of flap (14) and valve rod (17), outer seal sleeve mechanism is set in the joint of pilot seal mechanism and valve body (9), and the top of pilot seal mechanism is connected with driving mechanism, it is characterized in that: be fixedly installed transmission nut (2) in described driving mechanism, transmission nut (2) is threaded with valve rod (17), and transmission nut (2) up and down installed thrust bearing (6); Be provided with the anti-rotation mechanism of valve rod that prevents that valve rod from rotating on described valve rod (17).
2. balanced high pressure stop valve according to claim 1, it is characterized in that: described valve rod anti-rotation mechanism comprises the key (8) that is arranged in the groove of valve rod (17) side, key (8) slides up and down and is arranged in the keyway that stops spin-block (7), and only spin-block (7) is fixed on the outer cover (5) of valve body.
3. balanced high pressure stop valve according to claim 2, is characterized in that: between described transmission nut (2) and outer cover (5), dust ring (4) is set.
4. balanced high pressure stop valve according to claim 1 is characterized in that: described outer seal sleeve mechanism refers to: between valve body (9) and valve rod (17), stuffing box gland (18) is set, stuffing box gland (18) at least one "O"-ring of overcoat (10).
5. balanced high pressure stop valve according to claim 1, is characterized in that: be conical surface seal between described flap (14) and valve base joint (12).
6. balanced high pressure stop valve according to claim 5, is characterized in that: between valve base joint (12) and valve body (9), seal ring (13) is set.
7. balanced high pressure stop valve according to claim 1, it is characterized in that: the top of described valve rod (17) is connected with indicating arm (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740567 CN203023508U (en) | 2012-12-31 | 2012-12-31 | Balance type high-pressure stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740567 CN203023508U (en) | 2012-12-31 | 2012-12-31 | Balance type high-pressure stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203023508U true CN203023508U (en) | 2013-06-26 |
Family
ID=48647495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220740567 Expired - Fee Related CN203023508U (en) | 2012-12-31 | 2012-12-31 | Balance type high-pressure stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203023508U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629380A (en) * | 2013-12-04 | 2014-03-12 | 西峡龙成特种材料有限公司 | Gas pipeline sealing valve for high-temperature environment |
| CN104265915A (en) * | 2014-09-25 | 2015-01-07 | 江苏华太电力仪表有限公司 | External thread angle stop valve |
| CN104613181A (en) * | 2014-11-28 | 2015-05-13 | 北京卫星制造厂 | Vacuum stop valve under zero gravity |
| CN105952931A (en) * | 2015-03-09 | 2016-09-21 | 费斯托股份有限两合公司 | Valve |
| CN108019527A (en) * | 2017-12-07 | 2018-05-11 | 北京市北分仪器技术有限责任公司 | A kind of manual vacuum takes out valve in advance |
| CN108050289A (en) * | 2018-01-25 | 2018-05-18 | 杭州圣渥科技有限公司 | Reversal valve and water purifier |
| EP3638890A4 (en) * | 2017-06-15 | 2021-04-14 | Hema Endüstri Anonim Sirketi | A throttling locking valve |
-
2012
- 2012-12-31 CN CN 201220740567 patent/CN203023508U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629380A (en) * | 2013-12-04 | 2014-03-12 | 西峡龙成特种材料有限公司 | Gas pipeline sealing valve for high-temperature environment |
| CN104265915A (en) * | 2014-09-25 | 2015-01-07 | 江苏华太电力仪表有限公司 | External thread angle stop valve |
| CN104613181A (en) * | 2014-11-28 | 2015-05-13 | 北京卫星制造厂 | Vacuum stop valve under zero gravity |
| CN104613181B (en) * | 2014-11-28 | 2017-11-07 | 北京卫星制造厂 | A kind of vaccum stop valve under zero-g |
| CN105952931A (en) * | 2015-03-09 | 2016-09-21 | 费斯托股份有限两合公司 | Valve |
| EP3638890A4 (en) * | 2017-06-15 | 2021-04-14 | Hema Endüstri Anonim Sirketi | A throttling locking valve |
| CN108019527A (en) * | 2017-12-07 | 2018-05-11 | 北京市北分仪器技术有限责任公司 | A kind of manual vacuum takes out valve in advance |
| CN108019527B (en) * | 2017-12-07 | 2023-07-18 | 北京市北分仪器技术有限责任公司 | Manual vacuum pre-pumping valve |
| CN108050289A (en) * | 2018-01-25 | 2018-05-18 | 杭州圣渥科技有限公司 | Reversal valve and water purifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20161231 |