CN203743599U - Steel pipe cold extruding valve - Google Patents
Steel pipe cold extruding valve Download PDFInfo
- Publication number
- CN203743599U CN203743599U CN201420047991.4U CN201420047991U CN203743599U CN 203743599 U CN203743599 U CN 203743599U CN 201420047991 U CN201420047991 U CN 201420047991U CN 203743599 U CN203743599 U CN 203743599U
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- China
- Prior art keywords
- valve
- packing seat
- sealing
- mounting
- packing
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- Expired - Fee Related
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Abstract
The utility model belongs to the manufacturing technology of valve industries. A valve body 13 is formed by seamless steel pipes in a cold-extruding mode. The technological shortcoming generated during welding or casting is overcome. A valve sealing packing seat 14 is made of abrasion-resisting high-temperature-resisting materials, the section of the valve sealing packing seat 14 is of a V-shaped structure, and three mounting modes of obverse mounting, reverse mounting and opposite mounting are achieved. During mounting, a pressing sleeve 5 extrudes the packing seat 14 through an upper pad 4, so that a V-shaped opening is expanded, the outer edge of the packing seat 14 and an inner hole of a valve cover 3 are sealed in an extruding mode, the inner edge of the packing seat 14 and the outer diameter of a valve rod 1 are sealed in an extruding mode, and valve sealing is achieved. When a valve is opened, a lower pad 9 is extruded through pipe inner fluid pressure, the packing seat 14 is extruded in a force-transmission mode, the V-shaped opening is expanded, the extruding force on the inner hole of the valve cover 3 and the outer diameter of the valve rod 1 form the edge of the packing seat 14 is larger, and accordingly valve operation sealing performance is better. When the valve rod 1 and the packing seat 14 are abraded, abrasion can be automatically compensated through the elasticity of the V structure of the packing seat, accordingly, valve sealing performance is guaranteed, and the service life of a sealing pad is prolonged.
Description
One, affiliated technical field
The utility model belongs to technical field of valve manufacturing, particularly the stop valve manufacturing technology of valve manufacturing.
Two, background technique
What the valve body of domestic valve generally adopted is two kinds of technological method manufactures, and the first is casting technique manufacture, because casting easily produces the defects such as pore, sand holes, wall unevenness be even; The second is welding procedure manufacture, and valve body is spliced by seamless steel pipe, because caliber is less, when welding, can only adopt single face welding and double face shaping technique, easily produces pore, slag inclusion, the defect such as lack of penetration in welding.The manufacturability defect that above manufacturing process produces, is easy to cause valve housing generation explosion or forms and leak.Particularly be used in the occasion of inflammable and explosive gas, liquid, once leak, at any time all can breaking out of fire or explosive accident, cause very large loss can to the people's life and property.
The seal form of valve is a lot, but due to the open and close campaign of valve, the sealing of valve all belongs to motive sealing.Seal form mainly contains packing box seal, sylphon seal and stuffing box and combined bellows sealing, analyzes its sealing effect, has different difference.Packing box seal increases valve opening and closes resistance, easily causes wearing and tearing to reveal.Sylphon seal need to be by bellows and other weld parts, manufacturing process complexity, and require bellows that plastic deformation can not occur because of working stroke, therefore bellows needs certain length could meet working stroke requirement, so, cause valve mechanism size to increase, have certain drawback.200120177980.8 applying date of number of patent application 2007.9.30 stop valve, has just adopted stuffing box and combined bellows seal form.In addition, 90206466.5 applying date of Chinese Patent Application No. 90.5.15 valve without padding, belong to another kind of seal form, valve rod is divided into two sections, centre is connected by tetragonal body, between upper valve rod and valve gap, adopt the sealing of taper fit face, the outside thread of lower valve rod drives valve head to move up and down, and realizes the open and close of valve.Because this patent taper fit surface accuracy is manufactured difficulty, and tetragonal body Placement processing technology complexity, manufacture cost and difficulty of processing are increased, implementing this patent has certain difficulty, and cost of production is higher.Therefore studying valve body manufactures new process and designs easy reliable valve seal technology very necessary.
Three, model utility content
Model utility object of the present utility model is a set of cold-extrusion technology of application, adopt the three way valve of seamless steel pipe extrusion modling valve, solve and on steel pipe, open the shape of a saddle hole technical problem of welding tee again, can avoid the not even welding pore of blow hole, sand holes, wall thickness, slag inclusion, incomplete penetration defect.The valve body wall thickness of extrusion modling is even, and inherent quality is reliable, in use safer.Meanwhile, design simple and easy to do sealing means, meeting Installation and Debugging, keep in repair and changing easily under prerequisite, extend the working life of sealed member as far as possible.
To achieve these goals, the utility model is pressed valve body configuration design cold hobbing cavity mould, utilizes hydraulic equipment to carry out cold hobbing to seamless steel pipe, allows the mouth of pipe position of the valve rod installed on valve body, and three-way pipe port part part is cold extrusion shaped.By the welding of machining valve rod mounting hole and inner valve oralia, make the valve body of steel cold hobbing valve.The sealing of valve adopts high abrasion and resistant to elevated temperatures polytetrafluoroethylene packing pad, for ensureing the sealing of valve, and the wearing and tearing of compensation valve rod and Packing seat, the working life of prolongation Packing seat.The utility model is " V " structure by the Cross section Design of Packing seat.In stuffing box, the installation form of Packing seat has three kinds: the first is that Open Side Down for " V " Packing seat along dress, and stacked system is installed mutually; The second is upside-down mounting, i.e. the opening upwards of " V " Packing seat, and stacked system is installed mutually; The third be to dress, two " V " Packing seat openings relatively after again stack install.Its working principle is: in the time of Installation and Debugging, when filler pressing sleeve compresses filler, " V " opening of Packing seat expands, and the outward edge of Packing seat and valve gap endoporus jam-packed form seal ring, the inward flange of Packing seat and valve rod external diameter jam-packed form seal ring, realize the valve seal after Installation and Debugging.In the time of valve open, pressure in pipeline can produce active force to underlay, and underlay moves up along valve rod, and " V " shape opening of Packing seat can further expand, the edge of " V " Packing seat is larger to the jam-packed power of valve gap endoporus and valve rod external diameter, the better tightness of valve operation.And Packing seat is designed to " V " shape structure, valve rod external diameter and Packing seat inward flange rub while producing wearing and tearing mutually, and the elasticity of Packing seat " V " shape structure can compensate wearing and tearing automatically, thereby ensure the sealing of valve, have extended the working life of sealing gasket.
The utility model beneficial effect is compared with prior art: the three-way pipe valve body that the utility model adopts seamless steel pipe cold extrusion technology to be shaped, avoid casting valve body or seamless steel pipe splicing valve body to produce the leakage problem that manufacturability defect causes, particularly be used in the occasion of inflammable and explosive gas, liquid, can avoid breaking out of fire or explosive accident; The utility model adopts high abrasion and resistant to elevated temperatures polytetrafluoroethylene packing pad, Cross section Design is " V " structure, can automatically carry out elastic compensating to wearing and tearing, thereby ensure the sealing of valve, extend the working life of sealing gasket, avoided wearing and tearing leakage problem, the sylphon seal manufacturing process complexity of packing box seal, the taper fit surface accuracy of the problem that valve mechanism size increases and the sealing of taper fit face is manufactured difficulty, the problem that manufacture cost is high.Therefore, the utility model more has market competition advantage compared with the prior art.
Four, brief description of the drawings
Be described in further detail by reference to the accompanying drawings
Fig. 1, general assembly drawing of the present utility model
Fig. 2, the utility model Packing seat are along assembling structure figure
Fig. 3, the utility model Packing seat inverted structure figure
Fig. 4, the utility model Packing seat are to assembling structure figure
Fig. 1, the utility model are formed by valve body 13, valve rod 1, valve head 11, valve port plate 12, upper pad 4, underlay 9, screw 10, valve gap 3, stuffing box 8, gland 5, flange 2, handwheel 6, nut 7 and Packing seat 14 etc.Valve body 13 is by cold extrusion shaped, and it installs the mouth of pipe place welded flange 2 of valve rod 1 position, interior welds valve port plate 12.Flange 2 is connected with valve gap 3 use screws 10.Valve gap 3 centers are shoulder holes, and upper and lower two positions, place are interior threaded holes.Valve rod 1 is installed in valve gap 3 endoporus, and the screw-internal thread fit of the outside thread of valve rod 1 and valve gap 3 bottoms, forms the regulatory function that valve rod 1 moves up and down.Valve head 11 is installed in valve rod 1 lower end, and valve head 11 coordinates with valve port plate 12, forms valve opening and closing function.Between valve rod 1 and valve gap 3 top endoporus, form stuffing box 8, in stuffing box 8, install pad 4, underlay 9 and Packing seat 14, composition valve sealing device.Packing seat 14 has suitable dress, upside-down mounting, installation form to dress, as tri-kinds of Fig. 2, Fig. 3, Fig. 4.The cross section of Packing seat 14 is " V " shape structure, and while bearing pressure, " V " shape opening can expand, and when reducing or removing pressure, " V " shape opening can utilize self elastic shrinkage recovery.Gland 5 endoporus coordinate with valve rod 1 external diameter, and the screw-internal thread fit on its outside thread and valve gap 3 endoporus tops regulates pressed sealing device, realizes the sealing of valve.Handwheel 6 is installed at valve rod 1 top, fixing with nut 7.
The utility model is in the time of Installation and Debugging, gland 5 outside threads coordinate the Packing seat 14 compressing in stuffing box 8 with valve gap 3 endoporus upper internal threaded, " V " shape opening of Packing seat 14 expands, the outward edge of Packing seat 14 and valve gap 3 endoporus jam-packeds form seal ring, the inward flange of Packing seat 14 and valve rod 1 external diameter jam-packed form seal ring, the valve seal while realizing Installation and Debugging.In the time that valve is opened, hydrodynamic pressure in pipeline can produce active force to underlay 9, underlay 9 moves up along valve rod 1, power transmission extruding Packing seat 14, " V " shape opening of Packing seat 14 can expand again, Packing seat 14 edges are larger to the jam-packed power of valve gap 3 endoporus and valve rod 1 external diameter, make valve operation better tightness.And, Packing seat 14 is designed to " V " shape structure, when valve rod 1 external diameter and Packing seat 14 inward flanges rub while producing wearing and tearing mutually, large self elasticity can compensate wearing and tearing automatically because " V " shape structural design produces for Packing seat 14, thereby ensure the sealing of valve, extended the working life of sealing gasket.
Claims (3)
1. a valve is made up of valve rod (1), flange (2), valve gap (3), upper pad (4), gland (5), handwheel (6), nut (7), stuffing box (8), underlay (9), screw (10), valve head (11), valve port plate (12), valve body (13) and Packing seat (14) etc., it is characterized in that: valve body (13) belongs to cold extrusion shaped; In stuffing box (8), install pad (4), Packing seat (14), underlay (9), composition valve sealing device.
2. valve according to claim 1, is characterized in that: the cross section of Packing seat (14) is v-shaped structure.
3. valve according to claim 1, is characterized in that: Packing seat (14) has suitable dress, upside-down mounting, installation form to dress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420047991.4U CN203743599U (en) | 2014-01-20 | 2014-01-20 | Steel pipe cold extruding valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420047991.4U CN203743599U (en) | 2014-01-20 | 2014-01-20 | Steel pipe cold extruding valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743599U true CN203743599U (en) | 2014-07-30 |
Family
ID=51343400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420047991.4U Expired - Fee Related CN203743599U (en) | 2014-01-20 | 2014-01-20 | Steel pipe cold extruding valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743599U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327626A (en) * | 2017-08-31 | 2017-11-07 | 天津包博特密封科技有限公司 | A kind of high leakproofness valve rod |
| CN110307392A (en) * | 2019-08-06 | 2019-10-08 | 四川省科能工业设备制造有限公司 | The millstone type material conveying valve of valve rod self-tightening sealing |
-
2014
- 2014-01-20 CN CN201420047991.4U patent/CN203743599U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327626A (en) * | 2017-08-31 | 2017-11-07 | 天津包博特密封科技有限公司 | A kind of high leakproofness valve rod |
| CN110307392A (en) * | 2019-08-06 | 2019-10-08 | 四川省科能工业设备制造有限公司 | The millstone type material conveying valve of valve rod self-tightening sealing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 utility model: Steel pipe cold extruding valve Effective date of registration: 20150713 Granted publication date: 20140730 Pledgee: Zhangjiakou commercial bank, Limited by Share Ltd, Handan branch Pledgor: HEBEI YONGXING REFRIGERATION EQUIPMENT CO., LTD. Registration number: 2015990000555 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20180120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |