CN101749446B - Rising stem knife-shaped gate valve - Google Patents
Rising stem knife-shaped gate valve Download PDFInfo
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- CN101749446B CN101749446B CN2010101089283A CN201010108928A CN101749446B CN 101749446 B CN101749446 B CN 101749446B CN 2010101089283 A CN2010101089283 A CN 2010101089283A CN 201010108928 A CN201010108928 A CN 201010108928A CN 101749446 B CN101749446 B CN 101749446B
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- 230000000630 rising effect Effects 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000012856 packing Methods 0.000 claims description 19
- 210000004907 gland Anatomy 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 7
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 building Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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Abstract
The invention relates to a knife-shaped gate valve, in particular to a rising stem knife-shaped gate valve. The rising stem knife-shaped gate valve is composed of a valve body, a valve seat, a valve plate, a valve rod, a hand wheel bracket and a hand wheel, wherein one end of the valve rod is fixedly connected with the valve plate, and the other end thereof passes through the valve body and the central hole of the hand wheel bracket to be connected with the hand wheel; and the pipeline port of the inner cavity of the valve body is provided with the valve seat matched with the valve plate. The rising stem knife-shaped gate valve is characterized in that the circular sealed seat surface of the valve seat is arranged aslant at the inclination angle of theta; the surface of the valve plate, which is matched with the circular sealed seat surface, is a sloping surface; the hand wheel bracket and the valve body are fixedly connected by an upper cover of the valve body; and the central hole of the hand wheel bracket is provided with a nut, and the valve rod passes through the nut to be connected with the hand wheel. The invention has favorable sealing performance, does not have friction between the valve plate and the circular sealed seat surface and prolongs the service life of the whole knife-shaped gate valve.
Description
Technical field
The present invention relates to a kind of cutter type gate valve, relate in particular to a kind of rising stem knife-shaped gate valve.Mainly as regulating and cut-off device, be applied on the fluid lines such as tap water, sewage, building, oil, chemical industry, food, medicine, light textile, electric power, boats and ships, metallurgy, energy system.
Background technique
The disconnecting link valve is on the basis of common gate valve, changes dull and stereotyped valve plate into knife type valve plate.The disconnecting link valve is little with its volume, flow resistance is little, in light weight, be prone to install, flow resistance that advantage such as quick detachable has solved type valves such as common gate valve, plate valve, ball valve, stop valve, modulating valve, butterfly valve is big, weight big, problems such as difficult, that floor space is big are installed.Press the screw position of valve rod and divide, the disconnecting link valve can be divided into rising stem (RS.) disconnecting link valve and two kinds on dark bar disconnecting link valve.
So-called rising stem (RS.) disconnecting link valve is meant the disconnecting link valve of flashboard with the valve rod moving linearly.Promptly on valve rod, be provided with trapezoidal thread, through the nut of valve tip and the guide groove on the valve body, will rotatablely move becomes straight line motion, just will operate torque and become operation thrust, thereby drive valve rod and valve plate moves upward.
Traditional rising stem (RS.) disconnecting link valve of being sold in the market is owing to opening or closing in the closed procedure; Sealed seat surface on valve plate and the valve body is under the tight state of contact always; Thereby produce very big friction, long-term use can cause the mutual damage of valve plate and sealed seat surface, so its working life is short.And traditional rising stem knife-shaped gate valve is owing to its valve plate is to be processed by the long steel plate that approaches of a monoblock; Its sealing is relatively poor, particularly under the situation of high pressure and high temperature difference, and valve plate or easy deformation loses sealing; Will kill on valve seat, cause starting and closing difficulty.
Summary of the invention
The purpose of this invention is to provide a kind of long service life, and the rising stem (RS.) disconnecting link valve of good seal performance.
The present invention is achieved in that a kind of rising stem knife-shaped gate valve, is made up of valve body, valve seat, valve plate, valve rod, handwheel support and handwheel; One end and the valve plate of said valve rod are connected, and the center hole that the other end passes valve body and handwheel support is connected with handwheel; The pipeline opening of said body cavity is provided with the valve seat that cooperates with valve plate; It is characterized in that: the ring sealing base face tilt of said valve seat is provided with, and its tilt angle is θ; The face that said valve plate matches with the ring packing seat surface is domatic; Said handwheel support and valve body are connected through valve upper cover.Be provided with nut in the center hole of said handwheel support, said valve rod passes nut and is connected with handwheel.
The angular range of the tiltangle of said ring packing seat surface is the 85-88 degree.
The inner chamber both sides of said valve body are provided with parallel protruding guide rail, and this parallel protruding guide rail matches with the spill slide block of valve plate both sides.
Said valve upper cover is made up of gland flange, valve flange and lid; Said lid is between gland flange and valve flange; Said gland flange and handwheel support are connected, and said valve flange and valve body are connected; Be provided with center hole in the said valve upper cover.
Said center hole is built-in with stuffing box packing.
The first half of said valve plate is semicircle, and latter half of is rectangle, and the vertical surface first half of this valve plate is provided with face, and its gradient is the 60-80 degree; On said valve plate is domatic,, be provided with the built-up welding sealing with ring packing seat surface cooperation place.
The face of said valve body and the valve plate place that matches is provided with at least two welding location nails.
The invention has the beneficial effects as follows: the ring sealing base face tilt in the valve body is provided with; And the valve plate surface is transformed into the gradient with matching, when valve plate contacts with the ring packing seat surface, can play good seal action like this, and in the time of valve plate vertical motion downward or upward; Valve plate separates with the ring packing seat surface; Therefore in unlatching and closing course, there is not friction between valve plate and the ring packing seat surface, thereby prolonged the working life of whole cutter type gate valve.Change the first half of valve plate into semicircle, and increased the thickness of valve plate, thereby strengthened the sealability of valve plate.
Description of drawings
Fig. 1 is the generalized section of rising stem knife-shaped gate valve of the present invention;
Fig. 2 is the generalized section of valve body of the present invention;
Fig. 3 is the generalized section of valve plate of the present invention;
Fig. 4 is the rear view of valve plate of the present invention;
Fig. 5 is the plan view of valve plate of the present invention;
Fig. 6 is the structural representation of valve upper cover of the present invention;
Fig. 7 is the structural representation of valve rod of the present invention.
Specific embodiment
Elaborate to the present invention is novel below in conjunction with accompanying drawing and embodiment:
The present invention is a kind of rising stem knife-shaped gate valve, is made up of valve body 1, valve seat 2, valve plate 3, valve rod 4, handwheel support 5, handwheel 6 and valve upper cover 7; One end of said valve rod 4 is provided with draw-in groove 41, and valve rod 4 is connected through this draw-in groove and valve plate 3, and the center hole that the other end of valve rod 4 passes valve body 1 and handwheel support 5 is connected with handwheel 6.The pipeline opening of said valve body 1 inner chamber is provided with the valve seat 2 that cooperates with valve plate 3; The ring packing seat surface 21 of valve seat 2 is obliquely installed, and its tiltangle is the 85-88 degree.The face that said valve plate 3 matches with ring packing seat surface 21 is domatic; Said handwheel support 5 is connected through valve upper cover 7 with valve body 1; Be provided with nut 51 in the center hole of said handwheel support 5, said valve rod 4 passes nut 51 and is connected with handwheel 6.Rotate handwheel 6, valve rod 4 is through realizing straight line motion up and down with cooperating of nut 51, thereby drives moving up and down of valve plate 3.When rising stem knife-shaped gate valve of the present invention was in closed condition, the surface of valve plate 3 and ring packing seat surface 21 can closely cooperate, and reach good sealing effect.When rising stem knife-shaped gate valve of the present invention need be opened, valve rod 4 drove valve plate 3 and upwards does straight line motion, thereby makes valve plate 3 separate with ring packing seat surface 21 immediately once moving upward.Thus, in the process of whole opening and closing, be not have friction-produced between valve plate 3 and the ring packing seat surface 21, evaded mutual wearing and tearing between the two, prolonged the working life of rising stem knife-shaped gate valve.
For further reducing the surface friction drag in valve opening and the closing course, rising stem knife-shaped gate valve of the present invention is provided with parallel protruding guide rail 11 in the inner chamber both sides of valve body 1, and this parallel protruding guide rail 11 matches with the spill slide block 31 of valve plate 3 both sides.Thus, the unlatching of valve plate 3 is to slide on the parallel protruding guide rail 11 of valve body 1 through spill slide block 31 to realize with closure.
In order to cooperate moving up and down of valve plate of the present invention, the present invention is provided with valve upper cover 7 between valve body 1 and handwheel support 5.Said valve upper cover 7 is made up of gland flange 71, valve flange 72 and lid 73; Said lid 73 is between gland flange 71 and valve flange 72; Said gland flange 71 is connected with handwheel support 5, and said valve flange 72 is connected with valve body 1.Because valve upper cover 7 has certain height, given valve plate 3 enough working strokes, guarantee that rising stem knife-shaped gate valve of the present invention can complete opening.
Be provided with center hole 74 in the valve upper cover 7 of the present invention.Said center hole 74 is built-in with stuffing box packing.Stuffing box packing can the blocks flow medium moves upward along with valve rod 4 and outflows.
The present invention is in order to strengthen the sealability of rising stem knife-shaped gate valve, is semicircle with the first half of valve plate 3, and latter half of is rectangle, and increases its thickness, thereby makes and combine closelyr between valve plate 3 and the valve body 1, and can bear high pressure and high temperature difference.
The vertical surface first half of said this valve plate 3 is provided with face 32, and its gradient is the 60-80 degree; On said valve plate 3 is domatic,, be provided with built-up welding sealing 33 with ring packing seat surface 21 cooperation places.And on valve body 1,, be provided with at least two welding location nails 12 with the face 32 of valve plate 3 place that matches.When valve plate 3 along with the promotion of valve rod 4 combines with valve seat 2 sealings, two welding location nails 12 push away valve plate 3 to the direction of valve seat 2 is crowded, thus enhanced leaktightness power, it is tight more to make that valve plate 3 closes more.
Claims (5)
1. rising stem knife-shaped gate valve; Form by valve body (1), valve seat (2), valve plate (3), handwheel support (5) and handwheel (6); One end of valve rod (4) and valve plate (3) are connected, and the center hole that the other end passes valve body (1) and handwheel support (5) is connected with handwheel (6), and the pipeline opening of valve body (1) inner chamber is provided with the valve seat (2) that cooperates with valve plate (3); The face that valve plate (3) matches with ring packing seat surface (21) is domatic, and handwheel support (5) and valve body (1) are connected through valve upper cover (7); Be provided with nut (51) in the center hole of handwheel support, valve rod (4) passes nut (51) and is connected with handwheel (6), and the first half of valve plate (3) is semicircle; Latter half of is rectangle, it is characterized in that, the ring packing seat surface (21) of described valve seat (2) is obliquely installed; Its tilt angle is θ, and the angular range of tiltangle is the 85-88 degree, and the inner chamber both sides of described valve body (1) are provided with parallel protruding guide rail (11); This parallel protruding guide rail (11) matches with the spill slide block (31) of valve plate (3) both sides; The vertical surface first half of described valve plate (3) is provided with face (32), and its gradient is the 60-80 degree, on said valve body (1); With valve plate (3) face (32) place that matches, be provided with at least two welding location nails (12).
2. a kind of rising stem knife-shaped gate valve as claimed in claim 1 is characterized in that: said valve upper cover (7) is made up of gland flange (71), valve flange (72) and lid (73); Said lid (73) is positioned between gland flange (71) and the valve flange (72); Said gland flange (71) is connected with handwheel support (5); Be provided with center hole (74) in the said valve upper cover (7).
3. a kind of rising stem knife-shaped gate valve as claimed in claim 2 is characterized in that: said center hole (74) is built-in with stuffing box packing.
4. a kind of rising stem knife-shaped gate valve as claimed in claim 1 is characterized in that, an end of said valve rod (4) has a draw-in groove (41), and valve rod (4) is fixedly connected with valve plate (3) through this draw-in groove.
5. a kind of cutter type gate valve as claimed in claim 1 is characterized in that, on said valve plate (3) is domatic, with ring packing sealed seat surface (21) cooperation place, is provided with built-up welding sealing (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101089283A CN101749446B (en) | 2010-01-27 | 2010-01-27 | Rising stem knife-shaped gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101089283A CN101749446B (en) | 2010-01-27 | 2010-01-27 | Rising stem knife-shaped gate valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101749446A CN101749446A (en) | 2010-06-23 |
| CN101749446B true CN101749446B (en) | 2012-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101089283A Active CN101749446B (en) | 2010-01-27 | 2010-01-27 | Rising stem knife-shaped gate valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN101749446B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103629379A (en) * | 2013-11-15 | 2014-03-12 | 湖南泵阀制造有限公司 | Shaft guide gate valve |
| CN103697185B (en) * | 2014-01-08 | 2016-05-11 | 点夺机电工程江苏有限公司 | Pipeline isolating valve, |
| CN106286873A (en) * | 2016-11-07 | 2017-01-04 | 施瑞德阀门(厦门)有限公司 | A kind of inclined-plane guide-slot type ceramic gate valve |
| CN107780880A (en) * | 2017-11-21 | 2018-03-09 | 中国石油集团西部钻探工程有限公司 | The effective decompressor of lower tail |
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2010
- 2010-01-27 CN CN2010101089283A patent/CN101749446B/en active Active
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| Publication number | Publication date |
|---|---|
| CN101749446A (en) | 2010-06-23 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Liang Inventor after: Huang Siwei Inventor before: Wang Weidong Inventor before: Huang Siwei |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG WEIDONG HUANG SIWEI TO: WANG LIANG HUANG SIWEI |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A rising stem knife type gate valve Granted publication date: 20120125 Pledgee: China Construction Bank Co.,Ltd. Shanghai Huangpu Sub branch Pledgor: SHANGHAI KAIKE VALVE MANUFACTURING Co.,Ltd. Registration number: Y2024310000352 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |