CN103711925A - Pressure balance type inverted cock valve - Google Patents
Pressure balance type inverted cock valve Download PDFInfo
- Publication number
- CN103711925A CN103711925A CN201410010465.5A CN201410010465A CN103711925A CN 103711925 A CN103711925 A CN 103711925A CN 201410010465 A CN201410010465 A CN 201410010465A CN 103711925 A CN103711925 A CN 103711925A
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- China
- Prior art keywords
- cock
- valve
- pressure balance
- stopcock
- balance type
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/0207—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor with special plug arrangement, e.g. special shape or built in means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/0242—Spindles and actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/025—Particular coverings or materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/02—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having conical surfaces; Packings therefor
- F16K5/0292—Easy mounting or dismounting means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/16—Special arrangements for separating the sealing faces or for pressing them together for plugs with conical surfaces
- F16K5/162—Special arrangements for separating the sealing faces or for pressing them together for plugs with conical surfaces with the plugs or parts of the plugs mechanically pressing the seal against the housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/22—Features relating to lubrication
- F16K5/222—Features relating to lubrication for plugs with conical surfaces
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a pressure balance type inverted cock valve which comprises a valve body, a cock, a valve rod and padding. The cock is an inverted conical cock with the lower end being larger than the upper end. The cock is arranged in an inner cavity of the valve body, the valve rod drives the cock to rotate, a sealing face of the cock is a conical face, the valve rod is connected with the cock through a cross connector, a cylindrical spring or a belleville spring is arranged between the valve rod and the cock, the lower end of the valve body is fixedly provided with a valve cover, and the valve cover is provided with an adjustment shaft. The lower end of the adjustment shaft penetrates out of the valve cover, and the upper end of the adjustment shaft abuts against the cock. the lower end of the cock is provided with a first check valve, a sealing grease groove is formed in the sealing face of the cock, an oil storage tank is arranged in the valve body, the oil storage tank of the valve body is communicated with the sealing grease groove of the cock, and an oil filling valve communicated with the oil storage tank is arranged outside the valve body. The pressure balance type inverted cock valve can be used under high temperature, high pressure and severe work conditions, and has the advantages of being reliable in sealing, small in operation torque, long in service life, and the like.
Description
Technical field
The invention belongs to technical field of valve manufacturing, be specifically related to a kind of pressure balance type upside-down mounting stopcock, for the control of gas, liquid conducting pipes.
Background technique
At present domestic used stopcock is all to take soft seal, small-bore, low-pressure as main, can not solve the application of stopcock under high temperature, high pressure, harsh operating mode completely, the main dependence on import of high-end stopcock product.Due to stopcock as easy as rolling off a log wearing and tearing that cause sealing surface in the process of opening and closing, to such an extent as to cause the serious problems such as valve leak, cock be stuck.So machining accuracy and quality of fit that the cock of stopcock and valve body sealing surface require are very high.
Summary of the invention
In order to address the above problem, the invention provides a kind of pressure balance type upside-down mounting stopcock that can use under high temperature, high pressure and harsh operating mode, this stopcock has the advantages such as sealing is reliable, operational torque is little, long service life.
The present invention for the technological scheme that solves its technical problem and adopt is:
A kind of pressure balance type upside-down mounting stopcock, comprise valve body, cock, valve rod and filler, described cock is the cone-shaped valve plug that lower end is greater than the upside-down mounting of upper end, described cock is arranged in described body cavity, described valve rod drives described cock to rotate, the sealing surface of cock is the conical surface, described valve rod is connected by cross connector with described cock, and be provided with cylindrical spring or butterfly spring between described valve rod and described cock, described valve body lower end is fixed with valve gap, described valve gap is provided with adjustment axle, described adjustment axle can the screw on valve gap in rotation so that self lifting, the lower end of described adjustment axle is piercing in outside described valve gap and cock is supported in upper end, the lower end of described cock is provided with the first safety check, the sealing surface of described cock is provided with seal grease groove, described valve body is provided with oil storage tank, the oil storage tank of valve body communicates with the seal grease groove of cock, valve body is provided with the fuel feeding valve communicating with oil storage tank outward.
The cock mounting type of pressure balance type upside-down mounting stopcock of the present invention is upside-down mounting type.When valve closing, the pressure medium of the upper and lower cavity of stopcock equates, because there is area difference cock lower end and upper end, therefore, it is tightr that the thrust of medium can make that cock contacts with valve body, and the sealing surface of cock and valve can better be sealed.
In the moment of valve opening, because the first safety check is arranged at the bottom of cock, when the chamber pressure of cock lower end is too high, the first safety check can be opened, and lays down the pressure of cock lower end cavity, therefore also can not make that cock is unconfined upwards alters, and causes stuck phenomenon.
Valve rod is connected by cross connector with cock, by cross connector, connect, the power that medium acts in cock can not be directly delivered on valve rod, effectively solve prior art valve rod and be connected with the design of cock integral type or alternate manner cock and the valve rod bulk deformation bringing, cause cock or valve rod stuck with surface tear phenomenon; Belleville spring or cylindrical spring are placed in the place being connected with cock at valve rod in addition, the elastic force of spring and the self gravitation of cock can make to occur micro-gap between cock and valve body sealing surface, so not only reduced the unlatching moment of torsion of valve, also can effectively protect sealing surface, under worst hot case, the thermal expansion of cock can be repaired by its lifting, avoids high temperature stuck phenomenon, therefore, guarantee that on the one hand cock can adjust up and down in valve body; Effectively prevent that on the other hand phenomenon from appearring killing in cock and valve body.
By rotation, adjust the Percent of contact area of axle regulating cock and valve seal, guarantee sealing.
The sealing surface of cock has seal grease groove, and body cavity is also provided with oil storage tank, can inject seal grease by fuel feeding valve, by rotation cock, seal grease is spread upon on the sealing surface of valve body and cock equably, form the continuous oil film of one deck, make valve reach zero leakage.Although pressure balance type upside-down mounting stopcock adopts seal grease to reduce, open and close moment and improve sealability, may the medium circulating in pipeline be produced and be polluted.Therefore, under the condition of different medium and operating mode, the seal grease that needs selection to adapt with it.
The present invention for the further technological scheme that solves its technical problem and adopt is:
Between described fuel feeding valve and described oil storage tank, be provided with the second safety check.
The structure that cock is supported in described adjustment axle upper end is: center, described cock lower end offers V-shape hole, be provided with spheroid, described spheroid top is positioned at described V-shape hole, described spheroid below is provided with ball seat, described spheroid bottom is positioned at described ball seat, between described ball seat and described adjustment axle upper end, is provided with seal membrane, and described body cavity lower end is provided with step, described seal membrane edge is against described step, and is provided with seal ring between seal membrane edge and step.
On the sealing surface of described cock, be coated with curing molybdenum layer, polytetrafluoroethylene (PTFE) layer or carburization zone, or the sealing surface of cock is carried out to nitriding processing or pile-up welding hard alloy.
The passage of described cock is straight cylinder type or Venturi type, and the cross section of the passage of described cock is circular or trapezoidal.
The cone angle of the sealing surface of the cone-shaped of described cock is 9 °.
Be provided with and adjust axial compression lid, it is outside that described adjustment axial compression lid is removably covered in described adjustment axle lower end.
Described the first safety check is provided with two.
The invention has the beneficial effects as follows:
1) at valve rod and cock place, place one group of belleville spring or cylindrical spring, solve under high-temperature condition the stuck phenomenon that the thermal expansion by cock causes;
2) between valve rod and cock, by cross connector, connected, effectively solve the design of valve rod and cock integral type or alternate manner and is connected cock and the valve rod bulk deformation bringing, cause cock or valve rod stuck with surface tear phenomenon;
3) the first safety check is arranged at the bottom of cock, effectively avoids the stuck phenomenon causing because of cock lower end chamber pressure;
4) design of closed oil groove, reduces seal grease as far as possible and enters in pipeline, and medium is polluted;
5) adjust the design of axle, reliable sealing is provided;
6) according to different operating modes, cock surface is processed, as spraying molybdenum disulfide or PTFE, reduce friction factor, reduce moment of torsion, increase the service life; Pile-up welding hard alloy or spraying carbide or nitriding are processed, and improve cock surface hardness, and corrosion-proof wear is applicable to harsh operating mode.
Accompanying drawing explanation
Fig. 1 is one of schematic diagram of pressure balance type upside-down mounting stopcock of the present invention;
Fig. 2 be pressure balance type upside-down mounting stopcock of the present invention schematic diagram two;
Fig. 3 is the schematic diagram that the valve rod of pressure balance type upside-down mounting stopcock of the present invention is connected with cock;
Fig. 4 is the schematic diagram of the cock oil groove of pressure balance type upside-down mounting stopcock of the present invention;
Fig. 5 is the schematic diagram of the adjustment axle of pressure balance type upside-down mounting stopcock of the present invention;
Description of reference numerals:
1-valve body; 2-valve rod; 3-butterfly spring; 4-cross connector; 5-cock; 6-fuel feeding valve; 7-the second safety check; 8-filler; 9-valve gap; 10-spheroid; 11-seal membrane; 12-adjusts axle; 13-adjusts axial compression lid; 14-the second safety check.
Embodiment
Below, by specific instantiation explanation the specific embodiment of the present invention, those skilled in the art can understand advantage of the present invention and effect easily by content disclosed in the present specification.The present invention also can other different mode be implemented, and, under not departing from disclosed category, can give different modifications and change that is.
Embodiment: refer to shown in accompanying drawing, the invention will be further elaborated.
As depicted in figs. 1 and 2, the invention provides a kind of pressure balance type upside-down mounting stopcock that cock is stuck that seals reliably, prevents.Comprising important spare parts such as valve body 1, valve rod 2, butterfly spring 3, cross connector 4, cock 5, fuel feeding valve 6, the second safety check 7, filler 8, valve gap 9, spheroid 10, seal membrane 11, adjustment axle 12, adjustment axial compression lid the 13 and second safety check 14.Form by cock runner hole can be divided into conventional straight cylinder type or Venturi type.Valve body and internals material select kind many, and applied range is applicable to various media.Select and there is the pressure balancing plug valve that lower end is greater than the such inverted structure of taper cock of upper end, can change online easily worn part, convenient for maintaining and maintenance.
As shown in Figure 3, between valve rod 2 and cock 5, adopt cross connector 4 to be connected; Between valve rod 2 and cock 5, there is butterfly spring 3, prevent that cock 5 and valve body 1 from killing, solve under high-temperature condition the stuck phenomenon that the thermal expansion by cock causes; By cross connector 4, connect, the power that medium acts in cock 5 can not be directly delivered on valve rod 2, causes valve rod 2 stress deformations, even with filler 8, stuck phenomenon occurs.
As shown in Figure 4, the sealing surface of cock has seal grease groove, and body cavity is also provided with oil storage tank, can inject seal grease by fuel feeding valve 6, by rotation cock 5, seal grease be spread upon on the sealing surface of valve body 1 and cock 5 equably, form the continuous oil film of one deck, make valve reach zero leakage.According to different operating modes, cock 5 surfaces are processed, as spraying molybdenum disulfide or PTFE, reduce friction factor, reduce moment of torsion, increase the service life; Pile-up welding hard alloy or spraying carbide, improve cock 5 surface hardnesses, and corrosion-proof wear, is applicable to harsh operating mode;
As shown in Figure 5, by adjusting the Percent of contact area of axle 12 regulating cocks 5 and valve body 1 sealing, guarantee sealing.Described cock 5 centers, lower end offer V-shape hole, be provided with spheroid 10, described spheroid top is positioned at described V-shape hole, described spheroid below is provided with ball seat, described spheroid bottom is positioned at described ball seat, between described ball seat and described adjustment axle upper end, is provided with seal membrane 11, and described body cavity lower end is provided with step, described seal membrane edge is against described step, and is provided with seal ring between seal membrane edge and step.Seal membrane 11 has certain elasticity and ductility, and making to adjust axle 12 can up-down adjustment, adjusts between axle 12 and cock 5 and adopts spheroid 10 to support, and in adjustment process, the thrust that cock 5 is subject to is even, guarantees that cock 5 is concentric with valve body 1.After mixing up, install adjustment axial compression lid 13 and not only can prevent random adjustment, also can prevent that dust from entering.Major part (being lower end) in cock 5 arranges the first safety check 14, mainly prevents that the pressure of the cavity of cock 5 major parts from raising to the excessive stuck phenomenon causing of the thrust making progress of cock.Common greasing stopcock is not placed safety check, causes like this runner hole directly to communicate with cock major part cavity, for some temperature influences, changes medium greatly, is easily filled in cock major part cavity the inside, causes the cock can not up-down adjustment.
In sum, the present invention is a kind of pressure balance type upside-down mounting stopcock, mainly from several details aspect, has optimized structure, makes that pressure balance type upside-down mounting stopcock sealing is reliable, long service life, maintenance be simple.
Claims (8)
1. a pressure balance type upside-down mounting stopcock, comprise valve body (1), cock (5), valve rod (2) and filler (8), described cock is the cone-shaped valve plug that lower end is greater than the upside-down mounting of upper end, described cock is arranged in described body cavity, described valve rod drives described cock to rotate, the sealing surface of cock is the conical surface, it is characterized in that: described valve rod is connected by cross connector (4) with described cock, and between described valve rod and described cock, be provided with cylindrical spring or butterfly spring (3), described valve body lower end is fixed with valve gap (9), described valve gap is provided with adjusts axle (12), described adjustment axle can the screw on valve gap in rotation so that self lifting, the lower end of described adjustment axle is piercing in outside described valve gap and cock is supported in upper end, the lower end of described cock is provided with the first safety check (14), the sealing surface of described cock is provided with seal grease groove, described valve body is provided with oil storage tank, the oil storage tank of valve body communicates with the seal grease groove of cock, valve body is provided with the fuel feeding valve (6) communicating with oil storage tank outward.
2. pressure balance type upside-down mounting stopcock as claimed in claim 1, is characterized in that: between described fuel feeding valve and described oil storage tank, be provided with the second safety check (7).
3. pressure balance type upside-down mounting stopcock as claimed in claim 1, it is characterized in that: the structure that cock is supported in described adjustment axle upper end is: center, described cock lower end offers V-shape hole, be provided with spheroid (10), described spheroid top is positioned at described V-shape hole, described spheroid below is provided with ball seat, described spheroid bottom is positioned at described ball seat, between described ball seat and described adjustment axle upper end, be provided with seal membrane (11), described body cavity lower end is provided with step, described seal membrane edge is against described step, and is provided with seal ring between seal membrane edge and step.
4. pressure balance type upside-down mounting stopcock as claimed in claim 1, is characterized in that: on the sealing surface of described cock, be coated with curing molybdenum layer, polytetrafluoroethylene floor or carburization zone, or the sealing surface of cock is carried out to nitriding processing or pile-up welding hard alloy.
5. pressure balance type upside-down mounting stopcock as claimed in claim 1, is characterized in that: the passage of described cock is straight cylinder type or Venturi type, and the cross section of the passage of described cock is circular or trapezoidal.
6. pressure balance type upside-down mounting stopcock as claimed in claim 1, is characterized in that: the cone angle of the sealing surface of the cone-shaped of described cock is 9 °.
7. pressure balance type upside-down mounting stopcock as claimed in claim 1, is characterized in that: be provided with and adjust axial compression lid (13), it is outside that described adjustment axial compression lid is removably covered in described adjustment axle lower end.
8. pressure balance type upside-down mounting stopcock as claimed in claim 1, is characterized in that: described the first safety check is provided with two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410010465.5A CN103711925A (en) | 2014-01-10 | 2014-01-10 | Pressure balance type inverted cock valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410010465.5A CN103711925A (en) | 2014-01-10 | 2014-01-10 | Pressure balance type inverted cock valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103711925A true CN103711925A (en) | 2014-04-09 |
Family
ID=50405147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410010465.5A Pending CN103711925A (en) | 2014-01-10 | 2014-01-10 | Pressure balance type inverted cock valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103711925A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108119663A (en) * | 2017-12-26 | 2018-06-05 | 福斯流体控制（苏州）有限公司 | Metal hard-sealing high temperature high pressure stop cock |
| CN108426065A (en) * | 2018-03-15 | 2018-08-21 | 江苏中关村科技产业园节能环保研究有限公司 | A kind of the promotion commutation four-way valve and fluid switching method of structure optimization |
| WO2018188500A1 (en) * | 2017-04-12 | 2018-10-18 | 杭州三花研究院有限公司 | Electronic expansion valve |
| CN111120682A (en) * | 2020-02-21 | 2020-05-08 | 戴学祥 | Plug valve |
| CN113294583A (en) * | 2021-04-30 | 2021-08-24 | 西安航天远征流体控制股份有限公司 | Pressure balance type plug valve and driving device thereof |
-
2014
- 2014-01-10 CN CN201410010465.5A patent/CN103711925A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018188500A1 (en) * | 2017-04-12 | 2018-10-18 | 杭州三花研究院有限公司 | Electronic expansion valve |
| US11703258B2 (en) | 2017-04-12 | 2023-07-18 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electronic expansion valve |
| CN108119663A (en) * | 2017-12-26 | 2018-06-05 | 福斯流体控制（苏州）有限公司 | Metal hard-sealing high temperature high pressure stop cock |
| CN108426065A (en) * | 2018-03-15 | 2018-08-21 | 江苏中关村科技产业园节能环保研究有限公司 | A kind of the promotion commutation four-way valve and fluid switching method of structure optimization |
| CN111120682A (en) * | 2020-02-21 | 2020-05-08 | 戴学祥 | Plug valve |
| CN113294583A (en) * | 2021-04-30 | 2021-08-24 | 西安航天远征流体控制股份有限公司 | Pressure balance type plug valve and driving device thereof |
| CN113294583B (en) * | 2021-04-30 | 2024-03-08 | 西安航天远征流体控制股份有限公司 | Pressure balance type plug valve and driving device thereof |
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Application publication date: 20140409 |