CN113790187A - Hydraulic control stop valve - Google Patents
Hydraulic control stop valve Download PDFInfo
- Publication number
- CN113790187A CN113790187A CN202111107377.3A CN202111107377A CN113790187A CN 113790187 A CN113790187 A CN 113790187A CN 202111107377 A CN202111107377 A CN 202111107377A CN 113790187 A CN113790187 A CN 113790187A
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- valve body
- rotating shaft
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- valve
- groove
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
Abstract
The invention discloses a hydraulic control stop valve, which relates to the technical field of fluid control valves.A lower part of an upper valve body is arranged at the upper part of a lower valve body, the upper part and the lower part of one side of the upper valve body are respectively provided with a vent hole and a control groove, the lower part of the upper valve body is provided with a valve core groove, two ends of a valve core are respectively fixed with a first rotating shaft and a second rotating shaft, one end of the first rotating shaft, which is far away from the valve core, extends into the control groove, and a gear is arranged on the first rotating shaft; two sides of the lower part of the upper valve body are respectively provided with a first through hole, two sides of the upper part of the lower valve body are respectively provided with a second through hole, and the valve core is provided with a medium channel penetrating through the two ends; the piston is slidably arranged at the lower part in the lower valve body, two ends of the elastic component are respectively connected with the lower end of the upper valve body and the upper end of the piston, the lower end of the rack is arranged on the piston, and the upper end of the rack extends into the control groove and is meshed with the gear. The hydraulic control stop valve provided by the invention has the advantages of simple structure, convenience in use, production cost saving and automatic opening and closing functions.
Description
Technical Field
The invention relates to the technical field of fluid control valves, in particular to a hydraulic control stop valve.
Background
The stop valve is one of main control equipment applied to a fluid control pipeline, plays roles in adjusting the continuity of fluid in a pipeline and protecting a fluid transmission system from working normally, and is widely applied to the fields of hydraulic systems, industrial pipeline systems, municipal pipeline systems and the like due to the good characteristics of good sealing property, simple structure, convenience in use and the like.
At present, the stop valve is controlled automatically by the aid of the mode that the motor and the air pump are matched and rotated, the structure is complex, the size is relatively large, the device is not convenient to maintain, a large amount of space is occupied, the problem of inconvenience in use is caused, and most importantly, the stop valve cannot be opened and closed automatically according to medium pressure in a traditional stop valve.
Disclosure of Invention
In order to solve the technical problems, the invention provides the hydraulic control stop valve which is simple in structure, convenient to use, capable of saving production cost and capable of automatically opening and closing.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a hydraulic control stop valve, which comprises an upper valve body, a lower valve body, a valve core, a first rotating shaft, a second rotating shaft, a gear, a rack, an elastic part and a piston, wherein the upper end and the lower end of the lower valve body are both of an open structure, the lower part of the upper valve body is arranged at the upper part of the lower valve body, the upper part and the lower part of one side of the upper valve body are respectively provided with a vent hole and a control groove, the vent hole is communicated with the control groove, the lower part of the upper valve body is provided with a valve core groove, the two ends of the valve core are respectively fixed with the first rotating shaft and the second rotating shaft, the valve core is arranged in the valve core groove, the first rotating shaft and the second rotating shaft are both rotatably arranged on the upper valve body, one end of the first rotating shaft, which is far away from the valve core, extends into the control groove, the gear is arranged on the first rotating shaft, and the gear can drive the first rotating shaft to rotate, the gear is positioned in the control groove; two sides of the lower part of the upper valve body are respectively provided with a first through hole, the first through holes are communicated with the valve core groove, the axis direction of the first through holes is vertical to the axis direction of the first rotating shaft, two sides of the upper part of the lower valve body are respectively provided with a second through hole, each second through hole corresponds to one first through hole, the valve core is provided with a medium channel penetrating through two ends, the extending direction of the medium channel is vertical to the axis direction of the first rotating shaft, and two ends of the medium channel are respectively communicated with the two first through holes; the piston is slidably mounted at the lower part of the lower valve body, two ends of the elastic component are respectively connected with the lower end of the upper valve body and the upper end of the piston, the lower end of the rack is mounted on the piston, and the upper end of the rack extends into the control groove and is meshed with the gear.
Preferably, the vent hole is a circular through hole, and the lower end of the vent hole is arranged in the middle of the upper end of the control groove.
Preferably, the valve core is of a spherical structure, the valve core groove is a spherical groove, two sides of the valve core groove are respectively provided with a circular mounting hole and a cylindrical groove, the first rotating shaft and the second rotating shaft are of cylindrical structures, the first rotating shaft penetrates through the circular mounting hole to extend into the control groove, and the second rotating shaft is mounted in the cylindrical groove.
Preferably, the medium passage is a cylindrical hole, and an axial direction of the medium passage is perpendicular to an axial direction of the first rotating shaft.
Preferably, the first through hole and the second through hole are both circular through holes, and the inner diameter of the medium channel, the inner diameter of the first through hole and the inner diameter of the second through hole are the same.
Preferably, the piston includes the base member and sets up in the lug in base member upper surface middle part, base member slidable mounting in lower part in the lower valve body, the both ends of elastomeric element joint respectively in the lower extreme of going up the valve body with on the lug, the lower extreme of rack passes through the bolt fastening in one side of base member upper surface.
Preferably, the elastic member is a compression spring.
Preferably, the outer side lower part of the upper valve body is provided with an external thread, the upper inner side of the lower valve body is provided with an internal thread matched with the external thread structure, and the upper valve body is in threaded connection with the lower valve body.
Preferably, the gear is connected with the first rotating shaft through a flat key, and the first rotating shaft and the second rotating shaft are both welded on the valve core.
Preferably, the middle part of the outer side of the upper valve body is provided with a connecting thread, and the lower part of the outer side of the lower valve body is provided with an O-shaped sealing ring.
Compared with the prior art, the invention has the following technical effects:
the hydraulic control stop valve comprises an upper valve body, a lower valve body, a valve core, a first rotating shaft, a second rotating shaft, a gear, a rack, an elastic component and a piston, wherein the first rotating shaft, the gear and the rack are arranged on one side of the valve core, the rack can be driven to move upwards by utilizing a mode of pressurizing below the piston, then the gear is driven to rotate, the valve core is driven to rotate by the gear through the first rotating shaft, a medium channel in the valve core is communicated with the two first through holes, at the moment, a medium can circulate, namely, the on-off control of the hydraulic control stop valve can be realized by rotating the valve core, the installation of control equipment such as a motor and the like is omitted, the hydraulic control stop valve is simple in structure, small in occupied space and convenient to use, and the production cost is greatly saved. Through set up elastomeric element between piston and last valve body, when the pressure of piston below disappears or when less, elastomeric element can promote piston and rack downstream to utilize the transmission of gear and first pivot to reset the case, make the liquid accuse stop valve close, can open and close the liquid accuse stop valve according to medium pressure is automatic promptly, thereby make the device have the automatic function of opening and closing.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic perspective view of a hydraulic control stop valve provided by the present invention;
FIG. 2 is a front cross-sectional view of a hydraulically controlled shut-off valve provided by the present invention;
FIG. 3 is a side cross-sectional view of a hydraulically controlled shut-off valve provided by the present invention;
fig. 4 is a schematic perspective view of an upper valve body of the hydraulic control stop valve provided by the invention;
fig. 5 is a schematic perspective view of a lower valve body in the hydraulic control stop valve provided by the present invention.
Description of reference numerals: 100. a hydraulic control stop valve; 1. an upper valve body; 2. a lower valve body; 3. a valve core; 4. a first rotating shaft; 5. a second rotating shaft; 6. a gear; 7. a rack; 8. an elastic member; 9. a piston; 91. a substrate; 92. a bump; 10. a vent hole; 11. a control slot; 12. a spool groove; 13. a media channel; 14. a first through hole; 15. a second through hole; 16. an O-shaped sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a hydraulic control stop valve which is simple in structure, convenient to use, capable of saving production cost and capable of automatically opening and closing.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 5, the present embodiment provides a hydraulic stop valve 100, which includes an upper valve body 1, a lower valve body 2, a valve plug 3, a first rotating shaft 4, a second rotating shaft 5, a gear 6, a rack 7, an elastic component 8 and a piston 9, wherein both upper and lower ends of the lower valve body 2 are open structures, a lower portion of the upper valve body 1 is installed at an upper portion of the lower valve body 2, an upper portion and a lower portion of one side of the upper valve body 1 are respectively provided with a vent hole 10 and a control groove 11, the vent hole 10 is communicated with the control groove 11, the vent hole 10 penetrates through a top surface of the upper valve body 1, the control groove 11 penetrates through a bottom surface of the upper valve body 1, a valve plug groove 12 is arranged at a lower portion of the upper valve body 1, a first rotating shaft 4 and a second rotating shaft 5 are respectively fixed at both ends of the valve plug 3, the valve plug 3 is arranged in the valve plug groove 12, the first rotating shaft 4 and the second rotating shaft 5 are both rotatably installed on the upper valve body 1, one end of the first rotating shaft 4 far away from the valve plug 3 extends into the control groove 11, the gear 6 is arranged on the first rotating shaft 4, and the gear 6 can drive the first rotating shaft 4 to rotate, so that the valve core 3 can rotate in the valve core groove 12, and the gear 6 is positioned in the control groove 11; two sides of the lower part of the upper valve body 1 are respectively provided with a first through hole 14, the central axes of the two first through holes 14 are arranged in a collinear way, the first through holes 14 are communicated with a valve core groove 12, the axial direction of the first through holes 14 is vertical to the axial direction of the first rotating shaft 4, two sides of the upper part of the lower valve body 2 are respectively provided with a second through hole 15, each second through hole 15 corresponds to one first through hole 14, the valve core 3 is provided with a medium channel 13 penetrating through two ends, the extending direction of the medium channel 13 is vertical to the axial direction of the first rotating shaft 4, and two ends of the medium channel 13 are respectively communicated with the two first through holes 14; the piston 9 is slidably mounted at the lower part of the lower valve body 2, two ends of the elastic component 8 are respectively connected with the lower end of the upper valve body 1 and the upper end of the piston 9, the lower end of the rack 7 is mounted on the piston 9, and the upper end of the rack 7 extends into the control groove 11 and is meshed with the gear 6.
Specifically, the vent hole 10 is a circular through hole, and the lower end of the vent hole 10 is disposed in the middle of the upper end of the control groove 11.
Specifically, the valve core 3 is a spherical structure, the valve core groove 12 is a spherical groove, the two sides of the valve core groove 12 are respectively provided with a circular mounting hole and a cylindrical groove, the first rotating shaft 4 and the second rotating shaft 5 are both cylindrical structures, the first rotating shaft 4 penetrates through the circular mounting hole to extend into the control groove 11, and the second rotating shaft 5 is mounted in the cylindrical groove.
In this embodiment, the medium passage 13 is a cylindrical hole, and the axial direction of the medium passage 13 is perpendicular to the axial direction of the first rotating shaft 4.
In this embodiment, the first through hole 14 and the second through hole 15 are both circular through holes, and the inner diameter of the medium passage 13, the inner diameter of the first through hole 14, and the inner diameter of the second through hole 15 are all the same.
Through the case 3 that sets up spherical structure in the inside of last valve body 1, the contained angle between the axis direction of medium passageway 13 and the axis direction of first through-hole 14 is 90 degrees during initial condition, only needs to rotate case 3 90 degrees and can open hydraulic control stop valve 100, has not only accelerated the speed of opening and shutting of device, still keeps apart the sealed face of case 3, upper valve body 1 and medium to prevent it from causing the corruption, makes the device convenient to use.
Specifically, piston 9 includes base member 91 and sets up in the lug 92 of base member 91 upper surface middle part, and lower part in lower valve body 2 is installed in base member 91 slidable, and the both ends of elastomeric element 8 are on the lower extreme and the lug 92 of last valve body 1 joint respectively, and the lower extreme of rack 7 passes through the bolt fastening in one side of base member 91 upper surface.
In this embodiment, the elastic member 8 is a compression spring.
In this embodiment, the upper valve body 1 is connected with the lower valve body 2 by threads, the lower valve body 2 is of a cylindrical structure, the outer side of the lower part of the upper valve body 1 is provided with an external thread, and the inner side of the upper part of the lower valve body 2 is provided with an internal thread matched with the external thread.
In this embodiment, the gear 6 is connected to the first shaft 4 through a flat key, so that the gear 6 and the first shaft 4 do not rotate relatively, and when the gear 6 rotates, the gear can drive the first shaft 4 and the valve core 3 to rotate.
In this embodiment, the first rotating shaft 4 and the second rotating shaft 5 are both welded to the valve core 3.
Specifically, the middle part of the outer side of the upper valve body 1 is provided with a connecting thread, the hydraulic control stop valve 100 in the present embodiment can be installed in the hydraulic manifold block through the connecting thread, and the lower part of the outer side of the lower valve body 2 is provided with an O-ring 16.
In hydraulic system is mainly applied to hydraulic control stop valve 100 in this embodiment, hydraulic control stop valve 100 is that direct cartridge formula is connected, because hydraulic system often has hydraulic valve piece or hydraulic manifold block, oil circuit passageway has been seted up on hydraulic manifold block, if tapping at an oil circuit drill way of hydraulic manifold block, this screw thread and the connecting thread phase-match in the middle part of the upper valve body 1 outside, and then make hydraulic control stop valve 100 can threaded mounting on hydraulic manifold block, and simultaneously, can prevent that fluid from leaking by foretell threaded connection department through setting up O type sealing washer 16. The hydraulic manifold block is generally provided with a medium inlet oil passage and a medium outlet oil passage which are horizontally and correspondingly arranged, and a control oil passage which is vertically arranged, wherein the control oil passage is a control port.
The specific using process is as follows: the hydraulic control stop valve 100 in this embodiment is installed on the hydraulic manifold block by a connecting thread, so that the first through hole 14 on the front side of the upper valve body 1 is connected to the medium inlet oil passage, the first through hole 14 on the rear side of the upper valve body 1 is connected to the medium outlet oil passage, and the lower end of the lower valve body 2 is connected to the control oil passage. When pressure is applied to the control oil passage, pressure is applied to the lower end of the lower valve body 2, the piston 9 is pushed to overcome the elastic force of a compression spring to move upwards, meanwhile, the rack 7 fixedly connected with the piston is driven to move upwards, and then the first rotating shaft 4 is driven to rotate by the matching of the rack 7 and the gear 6 so as to realize the forward and backward rotation of the valve core 3, so that the first through hole 14 and the second through hole 15 on the front side and the rear side of the upper valve body 1 and the lower valve body 2 are communicated with the medium passage 13 in the valve core 3, and the opening of the hydraulic control stop valve 100 is realized; when the pressure of the oil passage is controlled to be too low or no pressure, namely the pressure below the lower valve body 2 is too low or no pressure, the piston 9 moves downwards under the action of the elastic force of the compression spring, the valve core 3 is closed in a rotary mode through the cooperation of the gear 6 and the rack 7, the first through hole 14 and the second through hole 15 on the front side and the rear side of the upper valve body 1 and the lower valve body 2 are blocked, the hydraulic control stop valve 100 is closed, and therefore the on-off operation of the device is achieved.
In this embodiment, one side through at case 3 sets up first pivot 4, gear 6 and rack 7, the utilization can drive rack 7 upward movement in the pressurized mode in piston 9 below, and then drive gear 6 rotates, gear 6 drives case 3 through first pivot 4 and rotates, make medium channel 13 and two first through-holes 14 intercommunication in the case 3, the medium can circulate this moment, can realize the control to the break-make of hydraulic control stop valve 100 promptly through letting case 3 rotate, the installation of controlgear such as motor has been saved, moreover, the steam generator is simple in structure, small space occupation, high durability and convenient use, and the production cost is greatly saved. By arranging the elastic component 8 between the piston 9 and the upper valve body 1, when the pressure below the piston 9 disappears or is small, the elastic component 8 can push the piston 9 and the rack 7 to move downwards so as to reset the valve core 3 by utilizing the transmission of the gear 6 and the first rotating shaft 4, so that the hydraulic control stop valve 100 is closed, namely, the hydraulic control stop valve 100 can be automatically opened and closed according to the medium pressure, and the device has the automatic opening and closing function.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (10)
1. A hydraulic control stop valve is characterized by comprising an upper valve body, a lower valve body, a valve core, a first rotating shaft, a second rotating shaft, a gear, a rack, an elastic component and a piston, wherein the upper end and the lower end of the lower valve body are both of an open structure, the lower part of the upper valve body is arranged at the upper part of the lower valve body, the upper part and the lower part of one side of the upper valve body are respectively provided with an air vent and a control groove, the air vent is communicated with the control groove, the lower part of the upper valve body is provided with a valve core groove, the first rotating shaft and the second rotating shaft are respectively fixed at the two ends of the valve core, the valve core is arranged in the valve core groove, the first rotating shaft and the second rotating shaft are both rotatably arranged on the upper valve body, one end of the first rotating shaft, which is far away from the valve core, extends into the control groove, the gear is arranged on the first rotating shaft, and the gear can drive the first rotating shaft to rotate, the gear is positioned in the control groove; two sides of the lower part of the upper valve body are respectively provided with a first through hole, the first through holes are communicated with the valve core groove, the axis direction of the first through holes is vertical to the axis direction of the first rotating shaft, two sides of the upper part of the lower valve body are respectively provided with a second through hole, each second through hole corresponds to one first through hole, the valve core is provided with a medium channel penetrating through two ends, the extending direction of the medium channel is vertical to the axis direction of the first rotating shaft, and two ends of the medium channel are respectively communicated with the two first through holes; the piston is slidably mounted at the lower part of the lower valve body, two ends of the elastic component are respectively connected with the lower end of the upper valve body and the upper end of the piston, the lower end of the rack is mounted on the piston, and the upper end of the rack extends into the control groove and is meshed with the gear.
2. The hydraulically controlled stop valve of claim 1, wherein the vent hole is a circular through hole, and the lower end of the vent hole is arranged in the middle of the upper end of the control groove.
3. The hydraulically-controlled stop valve as claimed in claim 1, wherein the spool is a spherical structure, the spool groove is a spherical groove, a circular mounting hole and a cylindrical groove are respectively formed on two sides of the spool groove, the first rotating shaft and the second rotating shaft are both cylindrical structures, the first rotating shaft passes through the circular mounting hole and extends into the control groove, and the second rotating shaft is mounted in the cylindrical groove.
4. The pilot-operated shutoff valve according to claim 1, wherein the medium passage is a cylindrical hole, and an axial direction of the medium passage is perpendicular to an axial direction of the first rotary shaft.
5. The pilot-operated shutoff valve according to claim 4, wherein the first through hole and the second through hole are both circular through holes, and an inner diameter of the medium passage, an inner diameter of the first through hole, and an inner diameter of the second through hole are all the same.
6. The hydraulically-controlled stop valve as claimed in claim 1, wherein the piston comprises a base and a projection arranged in the middle of the upper surface of the base, the base is slidably mounted at the lower part of the lower valve body, two ends of the elastic component are respectively clamped at the lower end of the upper valve body and the projection, and the lower end of the rack is fixed at one side of the upper surface of the base through a bolt.
7. The pilot operated shutoff valve of claim 1 wherein said resilient member is a compression spring.
8. The hydraulically-controlled stop valve as claimed in claim 1, wherein the lower part of the outer side of the upper valve body is provided with an external thread, the inner side of the upper part of the lower valve body is provided with an internal thread matched with the external thread, and the upper valve body is in threaded connection with the lower valve body.
9. The hydraulically controlled stop valve of claim 1, wherein the gear is connected to the first shaft by a flat key, and the first shaft and the second shaft are welded to the spool.
10. The hydraulically-controlled stop valve as claimed in claim 1, wherein the upper valve body is provided with a connecting thread in the middle of the outer side, and the lower valve body is provided with an O-ring in the lower part of the outer side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111107377.3A CN113790187A (en) | 2021-09-22 | 2021-09-22 | Hydraulic control stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111107377.3A CN113790187A (en) | 2021-09-22 | 2021-09-22 | Hydraulic control stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113790187A true CN113790187A (en) | 2021-12-14 |
Family
ID=78879055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111107377.3A Pending CN113790187A (en) | 2021-09-22 | 2021-09-22 | Hydraulic control stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113790187A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4655253A (en) * | 1983-10-06 | 1987-04-07 | Appendagefabriek "Hoogeveen" Bv | Shut-off valve |
| JPH09273656A (en) * | 1996-04-01 | 1997-10-21 | Keihin Seimitsu Kogyo Kk | Air path opening/closing valve |
| CN101482186A (en) * | 2009-01-06 | 2009-07-15 | 竺浩君 | Manual and automatic control axial flow distribution reversing rotary valve |
| DE202011050667U1 (en) * | 2011-07-08 | 2011-09-09 | Neumeister Hydraulik Gmbh | Safety shut-off valve |
| RU2497027C1 (en) * | 2012-10-31 | 2013-10-27 | Открытое акционерное общество "Центральный научно-исследовательский институт автоматики и гидравлики" (ОАО "ЦНИИАГ") | Hydraulic drive of discrete angular displacement |
| CN208546372U (en) * | 2018-06-12 | 2019-02-26 | 天津海士力机械设备有限公司 | A kind of efficient screw-in cartridge valve being easily installed |
| CN210918984U (en) * | 2019-07-12 | 2020-07-03 | 中国石油化工股份有限公司 | Downhole throttling test valve |
| CN112303276A (en) * | 2020-11-19 | 2021-02-02 | 西安航天动力研究所 | Large-caliber electromagnetic pilot pneumatic control piston rack transmission ball valve |
-
2021
- 2021-09-22 CN CN202111107377.3A patent/CN113790187A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4655253A (en) * | 1983-10-06 | 1987-04-07 | Appendagefabriek "Hoogeveen" Bv | Shut-off valve |
| JPH09273656A (en) * | 1996-04-01 | 1997-10-21 | Keihin Seimitsu Kogyo Kk | Air path opening/closing valve |
| CN101482186A (en) * | 2009-01-06 | 2009-07-15 | 竺浩君 | Manual and automatic control axial flow distribution reversing rotary valve |
| DE202011050667U1 (en) * | 2011-07-08 | 2011-09-09 | Neumeister Hydraulik Gmbh | Safety shut-off valve |
| RU2497027C1 (en) * | 2012-10-31 | 2013-10-27 | Открытое акционерное общество "Центральный научно-исследовательский институт автоматики и гидравлики" (ОАО "ЦНИИАГ") | Hydraulic drive of discrete angular displacement |
| CN208546372U (en) * | 2018-06-12 | 2019-02-26 | 天津海士力机械设备有限公司 | A kind of efficient screw-in cartridge valve being easily installed |
| CN210918984U (en) * | 2019-07-12 | 2020-07-03 | 中国石油化工股份有限公司 | Downhole throttling test valve |
| CN112303276A (en) * | 2020-11-19 | 2021-02-02 | 西安航天动力研究所 | Large-caliber electromagnetic pilot pneumatic control piston rack transmission ball valve |
Non-Patent Citations (2)
| Title |
|---|
| 王国法: "液压支架控制技术", 31 July 2010, 煤炭工业出版社, pages: 113 - 114 * |
| 田鹏, 刁伟东, 徐炜鑫, 王田: "快速关闭阀在电厂抽汽系统中的应用", 黑龙江电力, no. 06, 30 December 2003 (2003-12-30) * |
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