CN105020404A - Hydraulic control valve - Google Patents
Hydraulic control valve Download PDFInfo
- Publication number
- CN105020404A CN105020404A CN201510397041.3A CN201510397041A CN105020404A CN 105020404 A CN105020404 A CN 105020404A CN 201510397041 A CN201510397041 A CN 201510397041A CN 105020404 A CN105020404 A CN 105020404A
- Authority
- CN
- China
- Prior art keywords
- sealing
- piston
- sealing gasket
- flap
- valve body
- Prior art date
- 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
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
Abstract
The invention relates to a valve, in particular to a hydraulic control valve. The hydraulic control valve comprises a valve body, a valve part arranged in the valve body, and a valve rod connected with the valve part, wherein an entering channel for enabling a medium to enter and a flowing-out channel for flowing out the medium are arranged in the valve body; a pressure cylinder is additionally arranged on the valve body; a piston is arranged in the pressure cylinder; the other end, connected to one end of the valve part, of the valve rod penetrates through the pressure cylinder to be linked and connected with the piston; a sealing ring is arranged between the valve part and the valve body; a piston sealing ring is arranged between the piston and the pressure cylinder, and comprises a sealing gasket and a sealing elastic piece; an opening is formed in the piston; the sealing gasket comprises a first sealing gasket towards a pneumatic cylinder and a second sealing gasket towards a driving cylinder; the first sealing gasket and the second sealing gasket are respectively positioned in the opening for sealing the piston and the pressure cylinder; the sealing elastic piece is positioned between the first sealing gasket and the second sealing gasket, and is bonded and butted to the first sealing gasket and the second sealing gasket; and limiting pieces are respectively arranged between the first and second sealing gaskets and the piston. The invention provides the hydraulic control valve whose piston sealing ring is not liable to be worn.
Description
Technical field
The present invention relates to a kind of valve, particularly a kind of irrigation control valve.
Background technique
Irrigation control valve is a kind of common mechanical parts, irrigation control valve includes valve body, be located at flap in valve body and connect the valve rod of flap, the inlet passage and flowing out through for medium outflow that enter for medium is provided with in valve body, valve body is also provided with pressure cylinder, piston is provided with in pressure cylinder, the other end of valve rod connection flap one end runs through pressure cylinder and piston is connected, piston is placed in pressure cylinder and pressure cylinder is divided into drive cylinder and pneumatic cylinder and piston can move back and forth in pressure cylinder, seal ring is provided with between flap and valve body, piston packing is provided with between piston and pressure cylinder, the principle of this structure is that pressure cylinder is provided with import and outlet, import and outlet are connected to pressure regulator valve and by the size of pressure regulator valve pilot pressure in-cylinder pressure, when pressure cylinder internal pressure increases, piston moves toward drive cylinder downwards, piston driving valve rod makes flap move down through hole shutoff by inlet passage and flow pass, irrigation control valve is closed, when the pressure in pressure cylinder reduces, flap backs down by the pressure that the medium in inlet passage produces, flap band ovable valve stem makes piston upwards move toward pneumatic cylinder direction, irrigation control valve is opened, the valve of this structure is valve common in water pipeline, structure is simple, in such an embodiment, piston packing is common stuffing box packing, piston is in long-term moving back and forth, piston packing is easy to wearing and tearing, if piston packing weares and teares, the leakage of pressure cylinder internal pressure will be caused, this directly will affect the open and close of irrigation control valve.
Summary of the invention
For the deficiency that prior art exists, the invention provides the nonabradable irrigation control valve of a kind of piston packing.
For achieving the above object, the invention provides following technological scheme: a kind of irrigation control valve, include valve body, be located at flap in valve body and connect the valve rod of flap, the inlet passage and flowing out through for medium outflow that enter for medium is provided with in valve body, valve body is provided with piston cylinder, piston is provided with and piston cylinder is divided into booster cavity and pressure-releasing chamber by piston assembly in piston cylinder, piston and flap are connected by valve rod, described booster cavity is connected with inlet passage conducting by water pipeline, pressure-releasing chamber is connected with flow pass conducting by water pipeline, the water pipeline that booster cavity is connected with inlet passage and the water pipeline that pressure-releasing chamber is connected with flow pass are respectively equipped with control valve, Sealing is provided with between described flap and valve body, black box is provided with between piston and piston cylinder inwall, it is special toward being: described black box includes sealing gasket and sealing shell fragment, described piston is provided with opening, sealing gasket includes the first sealing gasket towards pressure-releasing chamber and the second sealing gasket towards booster cavity, the first described sealing gasket and the second sealing gasket are placed in respectively in opening to fit with piston and conflict, described sealing shell fragment is placed in fit between the first sealing gasket and the second sealing gasket and with the first sealing gasket and the second sealing gasket and conflicts, one end of sealing shell fragment connects piston, the other end laminating conflict piston cylinder inwall, the both sides of described piston gap are respectively equipped with inclined-plane towards the ramp blocks of opening and ramp blocks conflict piston cylinder inwall, the first described sealing block and the second sealing block are respectively equipped with Stamping Steel Ribbon, described Stamping Steel Ribbon connects the first sealing block and the second sealing block respectively and forms with it " L " shape and Stamping Steel Ribbon and ramp blocks are inclined-plane coordinates, first sealing gasket and the second sealing gasket are provided with bounding means respectively and between piston, the opening of piston is provided with the sealing cover removably connected with piston.
Adopt technique scheme, black box includes sealing gasket and sealing shell fragment, and sealing gasket is divided into the first sealing gasket and the second sealing gasket, sealing shell fragment is placed in fit between the first sealing gasket and the second sealing gasket and with the first sealing gasket and the second sealing gasket conflicts, when piston is in moving back and forth, when there are wearing and tearing in the first sealing gasket or the second sealing gasket, sealing shell fragment has elasticity because of it, fill up so compression can be carried out to the place of wearing and tearing, such as, there are wearing and tearing in the first sealing gasket, so piston is when moving to pneumatic cylinder direction, pressure so from drive cylinder direction can make sealing shell fragment apply pressure to the first sealing gasket, at this moment, the place of the first sealing gasket wearing and tearing can make it to piston press because of the pressure sealing shell fragment, at this moment the place of wearing and tearing can be filled up, so the second sealing gasket is former identical with the first sealing gasket, here no longer repeat, here it should be noted that, if there are wearing and tearing in the first sealing gasket, at this moment piston is again when moving towards drive cylinder direction, so because have the second sealing gasket below, second sealing gasket has possessed the effect of sealing, first sealing gasket and the second sealing gasket are also provided with Stamping Steel Ribbon, and Stamping Steel Ribbon and the ramp blocks that piston is arranged are that inclined-plane coordinates, in such setting, first sealing gasket and the second sealing gasket just achieve the dot encapsulation of piston and pressure cylinder inwall by Stamping Steel Ribbon and ramp blocks, and it is well-known, the effect that the effect of dot encapsulation seals much larger than face, and the setting of bounding means is to prevent sealing gasket from skidding off outside opening, sealing cover and piston removably connect, and are the replacings of conveniently sealing gasket and sealing shell fragment, reach the object of double insurance in sum, the irrigation control valve of this structure, no matter how piston moves, all there will not be and cause irrigation control valve to open and close because of the wearing and tearing of black box, solve the problem that background technique proposes.
The present invention is set to further: described sealing cover be located at opening on one end of pressure-releasing chamber and one end of sealing cover and the first sealing gasket fit and conflict, sealing cover and piston are provided with tapped hole, and sealing cover is threaded by screw thread hole with piston.
Adopt technique scheme, it is conveniently sealing gasket and seal the replacing of shell fragment that sealing cover and piston removably connect, and the mode be threaded mentioned here is the simplest and firm, can certainly be other Placement, the mode that the present invention is preferably threaded.
The present invention is further set to: described sealing cover and piston are respectively equipped with spacing breach, first sealing gasket and the second sealing gasket are respectively equipped with the spacing block set with spacing breach adaptation, and spacing block set is step-like with the first sealing gasket and the second sealing gasket respectively.
Adopt technique scheme, when the spacing block set on the first sealing gasket and the second sealing gasket is placed in the spacing breach on sealing cover and piston respectively, opening that the first sealing gasket and the second sealing gasket just cannot skid off piston, reaches spacing effect outward.
The present invention is further set to: described Sealing includes the metal sealing block be located on flap and the seal ring be located between flap and metal sealing block, described metal sealing block is located at flap on one end of valve body and metal sealing block and flap gluing, sealing, one end of metal sealing block is provided with valve body gluing, sealing and perpendicular to the second metal sealing block of metal sealing block, described metal sealing block and flap removably connect.
Adopt technique scheme, the setting of metal sealing block is the sealing effect in order to strengthen between flap and valve body, metal sealing block laminating flap, and the second metal sealing block is connected with valve interior wall gluing, sealing and with metal sealing block is vertical, in arranging like this, the effect of hard sealing is just achieved between flap and valve body, and between metal sealing block and flap, be also provided with seal ring, this is assistant metal sealing block to the sealing of valve body and flap, if when metal sealing block occurs that the situation such as wearing and tearing causes leakage, seal ring is the Packed function of tool also, so also can prevent medium from revealing, reach the effect of double-sealing, in such scheme, metal sealing block and flap removably connect, this is for son facilitates the replacing of metal sealing block, if there is damage, metal sealing block can be removed the metal sealing block more renewed.
The present invention is further set to: described metal sealing block is connected by the second screw with flap.
Adopt technique scheme, the mode that screw connects is simple and convenient and firm.
The present invention is further set to: described sealing shell fragment is metal clips.
Adopt technique scheme, the working life of metal clips is higher.
The present invention is further set to: described valve body is connected by the 3rd screw with piston cylinder, is provided with stuffing box packing between valve body and piston cylinder.
Adopt technique scheme, the Placement of screw is the most firm, and stuffing box packing occurs between valve body and piston cylinder revealing to prevent.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the embodiment of the present invention.
Embodiment
A kind of irrigation control valve as shown in Figure 1, include valve body 1, be located at flap 2 in valve body 1 and connect the valve rod 3 of flap 2, be provided with in valve body 1 inlet passage 4 that enters for medium and flow out for medium flow out through 5, valve body 1 is provided with piston cylinder 6, piston 61 is provided with and piston cylinder 6 is divided into booster cavity 62 and pressure-releasing chamber 63 by piston 61 in piston cylinder 6, piston 61 and flap 2 are connected by valve rod 3, described booster cavity 62 is connected with inlet passage 4 conducting by water pipeline 10, pressure-releasing chamber 63 is connected with flow pass 5 conducting by water pipeline 10, booster cavity 62 is respectively equipped with control valve 7 with entering on water pipeline 10 that logical 4 roads are connected and the water pipeline 10 that pressure-releasing chamber 63 is connected with flow pass 5, Sealing 8 is provided with between described flap 2 and valve body 1, black box 9 is provided with between piston 61 and piston cylinder 6 inwall, it is special toward being: described black box 9 includes sealing gasket 91 and sealing shell fragment 92, described piston 61 is provided with opening 611, sealing gasket 91 includes the first sealing gasket 911 towards pressure-releasing chamber 63 and the second sealing gasket 912 towards booster cavity 62, the first described sealing gasket 911 and the second sealing gasket 912 are placed in respectively in opening 611 to fit with piston 61 and conflict, described sealing shell fragment 92 to be placed between the first sealing gasket 911 and the second sealing gasket 912 and to seal 912 with the first sealing gasket 911 and second and pads to fit and conflict, one end of sealing shell fragment 92 connects piston 61, the other end laminating conflict piston cylinder 6 inwall, the both sides of described piston gap 611 be respectively equipped with the ramp blocks 612 of inclined-plane towards opening 611 and ramp blocks 612 is conflicted piston cylinder 6 inwall, the first described sealing block 911 and the second sealing 912 pieces are respectively equipped with Stamping Steel Ribbon 913, described Stamping Steel Ribbon 912 connects the first sealing block 911 respectively and the second sealing block 912 forms " L " shape with it and Stamping Steel Ribbon 913 coordinates in inclined-plane with ramp blocks 612, first sealing gasket 911 and the second sealing gasket 912 are provided with bounding means 93 respectively and between piston 61, opening 611 place of piston 61 is provided with the sealing cover 94 removably connected with piston 61, in such scheme, black box 9 includes sealing gasket 91 and sealing shell fragment 92, and sealing gasket 91 is divided into the first sealing gasket 911 and the second sealing gasket 912, sealing shell fragment 92 is placed in fit between the first sealing gasket 911 and the second sealing gasket 912 and with the first sealing gasket 911 and the second sealing gasket 912 conflicts, when piston 61 is in moving back and forth, when there are wearing and tearing in the first sealing gasket 911 or the second sealing gasket 912, sealing shell fragment 92 has elasticity because of it, fill up so compression can be carried out to the place of wearing and tearing, such as, there are wearing and tearing in the first sealing gasket 911, so piston 61 is when moving to pressure-releasing chamber 63 direction, pressure so from booster cavity 62 direction can make sealing shell fragment 92 apply pressure to the first sealing gasket 911, at this moment, the place that first sealing gasket 911 weares and teares can make it to extrude to piston 61 because of the pressure sealing shell fragment 92, at this moment the place of wearing and tearing can be filled up, so the principle of the second sealing gasket 912 is identical with the first sealing gasket 911, here no longer repeat, here it should be noted that, if there are wearing and tearing in the first sealing gasket 911, at this moment piston 61 is again when moving towards booster cavity 62 direction, so because have the second sealing gasket 912 below, second sealing gasket 912 has possessed the effect of sealing, first sealing gasket 911 and the second sealing gasket 912 are also provided with Stamping Steel Ribbon 912, and Stamping Steel Ribbon 912 and the ramp blocks 612 that piston 61 is arranged coordinate in inclined-plane, in such setting, first sealing gasket 911 and the second sealing gasket 912 just achieve the dot encapsulation of piston 61 and piston cylinder 6 inwall by Stamping Steel Ribbon 913 and ramp blocks 912, and it is well-known, the effect that the effect of dot encapsulation seals much larger than face, and the setting of bounding means 93 is to prevent sealing gasket 91 from skidding off outside opening 611, sealing cover 94 and piston 61 removably connect, and are the replacings of conveniently sealing gasket 91 and sealing shell fragment 92, reach the object of double insurance, in sum, the irrigation control valve of this structure, no matter how piston 61 moves, all there will not be and cause irrigation control valve to open and close because of the wearing and tearing of black box 9, solve the problem that background technique proposes.
In embodiments of the present invention, described sealing cover 94 be located at opening on one end of pressure-releasing chamber 63 and one end of sealing cover 94 and the first sealing gasket 911 fit and conflict, sealing cover 94 and piston 61 are provided with tapped hole 95, sealing cover 94 is threaded by screw thread hole with piston 61, in such scheme, it is conveniently sealing gasket 91 and seal the replacing of shell fragment 92 that sealing cover 94 and piston 61 removably connect, and the mode be threaded mentioned here is the simplest and firm, can certainly be other Placement, the mode that the present invention is preferably threaded.
In embodiments of the present invention, described sealing cover 94 and piston 61 are respectively equipped with spacing breach 931, first sealing gasket 911 and the second sealing gasket 912 are respectively equipped with the spacing block set 932 with spacing breach 931 adaptation, spacing block set 932 respectively with the first sealing gasket 911 and the second sealing gasket 912 in step-like, in such scheme, when spacing block set 932 on first sealing gasket 911 and the second sealing gasket 912 is placed in the spacing breach 931 on sealing cover 94 and piston 61 respectively, the opening 611 that first sealing gasket 91 and the second sealing gasket 92 just cannot skid off piston 61 is outer, reach spacing effect.
In embodiments of the present invention, described Sealing 8 includes the metal sealing block 21 be located on flap 2 and the seal ring 22 be located between flap 2 and metal sealing block 21, described metal sealing block 21 is located at flap 2 on one end of valve body 1 and metal sealing block 21 and flap 2 gluing, sealing, one end of metal sealing block 21 is provided with valve body 1 gluing, sealing and perpendicular to the second metal sealing block 211 of metal sealing block 21, described metal sealing block 21 removably connects with flap 2, in such scheme, the setting of metal sealing block 21 is the sealing effects in order to strengthen between flap 2 and valve body 1, metal sealing block 21 is fitted flap 2, and the second metal sealing block 211 is connected with valve body 1 inwall gluing, sealing and with metal sealing block 21 is vertical, in arranging like this, the effect firmly sealed just is achieved between flap 2 and valve body 1, and between metal sealing block 21 and flap 2, be also provided with seal ring 22, this is the sealing of assistant metal sealing block 21 pairs of valve bodies 1 and flap 2, if when metal sealing block 21 occurs that the situation such as wearing and tearing causes leakage, seal ring 22 is the Packed function of tool also, so also can prevent medium from revealing, reach the effect of double-sealing, in such scheme, metal sealing block 21 and flap 2 removably connect, this is the replacing of conveniently metal sealing block 21, if there is damage, metal sealing block 21 can be removed the metal sealing block more renewed.
In embodiments of the present invention, described metal sealing block 21 is connected by the second screw 23 with flap 2, and in such scheme, the mode that screw connects is simple and convenient and firm.
In embodiments of the present invention, described sealing shell fragment 92 is metal clips, and in such scheme, the working life of metal clips is higher.
In embodiments of the present invention, described valve body 1 is connected by the 3rd screw 11 with piston cylinder 6, is provided with stuffing box packing 12, between valve body 1 and piston cylinder 6 in such scheme, the Placement of screw is the most firm, and stuffing box packing 12 occurs between valve body 1 and piston cylinder 6 revealing to prevent.
Claims (7)
1. an irrigation control valve, include valve body, be located at flap in valve body and connect the valve rod of flap, the inlet passage and flowing out through for medium outflow that enter for medium is provided with in valve body, valve body is provided with piston cylinder, piston is provided with and piston cylinder is divided into booster cavity and pressure-releasing chamber by piston assembly in piston cylinder, piston and flap are connected by valve rod, described booster cavity is connected with inlet passage conducting by water pipeline, pressure-releasing chamber is connected with flow pass conducting by water pipeline, the water pipeline that booster cavity is connected with inlet passage and the water pipeline that pressure-releasing chamber is connected with flow pass are respectively equipped with control valve, Sealing is provided with between described flap and valve body, black box is provided with between piston and piston cylinder inwall, it is special toward being: described black box includes sealing gasket and sealing shell fragment, described piston is provided with opening, sealing gasket includes the first sealing gasket towards pressure-releasing chamber and the second sealing gasket towards booster cavity, the first described sealing gasket and the second sealing gasket are placed in respectively in opening to fit with piston and conflict, described sealing shell fragment is placed in fit between the first sealing gasket and the second sealing gasket and with the first sealing gasket and the second sealing gasket and conflicts, one end of sealing shell fragment connects piston, the other end laminating conflict piston cylinder inwall, the both sides of described piston gap are respectively equipped with inclined-plane towards the ramp blocks of opening and ramp blocks conflict piston cylinder inwall, the first described sealing block and the second sealing block are respectively equipped with Stamping Steel Ribbon, described Stamping Steel Ribbon connects the first sealing block and the second sealing block respectively and forms with it " L " shape and Stamping Steel Ribbon and ramp blocks are inclined-plane coordinates, first sealing gasket and the second sealing gasket are provided with bounding means respectively and between piston, the opening of piston is provided with the sealing cover removably connected with piston.
2. irrigation control valve according to claim 1, it is characterized in that: described sealing cover be located at opening on one end of pressure-releasing chamber and one end of sealing cover and the first sealing gasket fit and conflict, sealing cover and piston are provided with tapped hole, and sealing cover is threaded by screw thread hole with piston.
3. irrigation control valve according to claim 1 and 2, it is characterized in that: described sealing cover and piston are respectively equipped with spacing breach, first sealing gasket and the second sealing gasket are respectively equipped with the spacing block set with spacing breach adaptation, and spacing block set is step-like with the first sealing gasket and the second sealing gasket respectively.
4. irrigation control valve according to claim 1, it is characterized in that: described Sealing includes the metal sealing block be located on flap and the seal ring be located between flap and metal sealing block, described metal sealing block is located at flap on one end of valve body and metal sealing block and flap gluing, sealing, one end of metal sealing block is provided with valve body gluing, sealing and perpendicular to the second metal sealing block of metal sealing block, described metal sealing block and flap removably connect.
5. the irrigation control valve according to claim 1 or 4, is characterized in that: described metal sealing block is connected by the second screw with flap.
6. irrigation control valve according to claim 1 and 2, is characterized in that: described sealing shell fragment is metal clips.
7. the irrigation control valve according to right 1, is characterized in that: described valve body is connected by the 3rd screw with piston cylinder, is provided with stuffing box packing between valve body and piston cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510397041.3A CN105020404A (en) | 2015-06-30 | 2015-06-30 | Hydraulic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510397041.3A CN105020404A (en) | 2015-06-30 | 2015-06-30 | Hydraulic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105020404A true CN105020404A (en) | 2015-11-04 |
Family
ID=54410593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510397041.3A Pending CN105020404A (en) | 2015-06-30 | 2015-06-30 | Hydraulic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105020404A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587922A (en) * | 2015-12-09 | 2016-05-18 | 安徽铜都流体科技股份有限公司 | Energy-saving pump control valve |
| CN107218423A (en) * | 2017-06-01 | 2017-09-29 | 刘明生 | A kind of pilot valve auxiliary type Self-operated valve executing agency |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030085533A1 (en) * | 2001-11-07 | 2003-05-08 | Bernhard Spiegl | Sealing elements for compressor valves |
| CN102022550A (en) * | 2009-09-10 | 2011-04-20 | 江南阀门有限公司 | Double-sealing structure of piston type axial flow valve |
| CN203067894U (en) * | 2013-01-29 | 2013-07-17 | 西麦克阀门制造有限公司 | Water control valve |
| CN203395300U (en) * | 2013-06-27 | 2014-01-15 | 浙江工贸职业技术学院 | Check valve with double seals |
| CN203585491U (en) * | 2013-10-29 | 2014-05-07 | 浙江良茂阀门有限公司 | Water conservancy control valve reliable in opening and closing |
-
2015
- 2015-06-30 CN CN201510397041.3A patent/CN105020404A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030085533A1 (en) * | 2001-11-07 | 2003-05-08 | Bernhard Spiegl | Sealing elements for compressor valves |
| CN102022550A (en) * | 2009-09-10 | 2011-04-20 | 江南阀门有限公司 | Double-sealing structure of piston type axial flow valve |
| CN203067894U (en) * | 2013-01-29 | 2013-07-17 | 西麦克阀门制造有限公司 | Water control valve |
| CN203395300U (en) * | 2013-06-27 | 2014-01-15 | 浙江工贸职业技术学院 | Check valve with double seals |
| CN203585491U (en) * | 2013-10-29 | 2014-05-07 | 浙江良茂阀门有限公司 | Water conservancy control valve reliable in opening and closing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587922A (en) * | 2015-12-09 | 2016-05-18 | 安徽铜都流体科技股份有限公司 | Energy-saving pump control valve |
| CN105587922B (en) * | 2015-12-09 | 2018-05-15 | 安徽铜都流体科技股份有限公司 | Energy-saving pump-controlling valve |
| CN107218423A (en) * | 2017-06-01 | 2017-09-29 | 刘明生 | A kind of pilot valve auxiliary type Self-operated valve executing agency |
| CN107218423B (en) * | 2017-06-01 | 2019-07-09 | 刘明生 | A kind of pilot valve auxiliary type Self-operated valve executing agency |
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Application publication date: 20151104 |
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