CN111219521A - Servo ultrahigh-pressure water hydraulic throttle valve - Google Patents
Servo ultrahigh-pressure water hydraulic throttle valve Download PDFInfo
- Publication number
- CN111219521A CN111219521A CN202010202658.6A CN202010202658A CN111219521A CN 111219521 A CN111219521 A CN 111219521A CN 202010202658 A CN202010202658 A CN 202010202658A CN 111219521 A CN111219521 A CN 111219521A
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- China
- Prior art keywords
- valve core
- valve
- servo
- driving rod
- cavity
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 230000006698 induction Effects 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
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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
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses a servo ultrahigh pressure water hydraulic throttling valve which comprises a valve body, wherein a circulation cavity, a fluid inlet and a fluid outlet which are communicated with the circulation cavity are arranged in the valve body, a valve core used for adjusting the flow of fluid is arranged in the circulation cavity, the valve core is connected with a servo motor through a coupler, the upper end of the valve body is connected with a motor base, a proximity switch used for controlling the flow of the fluid is installed on the motor base, the coupler is connected with the valve core through a valve core driving rod, a driving limiting pin is installed at the upper end of the valve core driving rod, and a position induction ring is installed on the driving limiting pin. The servo ultrahigh-pressure water hydraulic throttle valve has the advantages of simple structure, high reliability, long service life, convenience in operation, simplicity and convenience in maintenance, lower cost, high control precision and the like.
Description
Technical Field
The invention relates to the field of servo pumps, in particular to a servo ultrahigh pressure water hydraulic throttling valve.
Background
The throttle valve is a valve for controlling the flow of fluid by changing the throttle section or the throttle length, and in the field of hydraulic pressure testing, a needle type throttle valve is one of the most widely used high-pressure valves. The valve core of the needle type throttle valve is in a cone shape or a parabola shape, the sectional area of a channel is changed through the valve core when the needle type throttle valve works, so that the purpose of changing flow and pressure is achieved.
According to the analysis of the advantages and the disadvantages of the needle type throttle valve, the structure of the needle type throttle valve needs to be improved, the advantages of the needle type throttle valve are kept, the existing disadvantages of the needle type throttle valve are improved, the needle type throttle valve has better control precision, and the automation degree is high.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a servo ultrahigh pressure water hydraulic throttle valve.
In order to achieve the purpose, the invention adopts the following technical measures:
a servo ultrahigh-pressure hydraulic throttling valve comprises a valve body, wherein a circulation cavity, a fluid inlet and a fluid outlet which are communicated with the circulation cavity are arranged in the valve body, a valve core used for adjusting the flow of fluid is arranged in the circulation cavity, the valve core is connected with a servo motor through a coupler, the upper end of the valve body is connected with a motor base, a proximity switch used for controlling the flow of the fluid is installed on the motor base, the coupler is connected with the valve core through a valve core driving rod, a driving limit pin is installed at the upper end of the valve core driving rod, and a position induction ring is installed on the driving limit pin.
Preferably, a cavity is arranged in the motor base and is communicated with the circulation cavity, the coupler and the valve core driving rod are arranged in the cavity, the proximity switches are arranged on two sides of the cavity, and the proximity switches are arranged oppositely up and down.
Preferably, install the mount pad on the motor cabinet, proximity switch passes through the mount pad is installed the motor cabinet, the mount pad top is equipped with adjusts the seat, adjust the seat and install the regulation pole, the induction position is adjusted through adjusting the seat and adjusting the pole to the mount pad.
Preferably, the two sides of the motor base are provided with long sliding holes for the proximity switch to move in the radial direction, the proximity switch extends into the motor base from the long sliding holes, and the mounting base is slidably arranged on one side of the long sliding holes.
Preferably, the mounting base is provided with a long round hole, a screw is matched in the long round hole, the mounting base is connected to the side wall of the motor base through the screw, and the mounting base is connected with the adjusting rod.
Preferably, the valve body and the valve core are sealed by a high-pressure sealing element group, the upper part of the high-pressure sealing element group is a sealing element pressing sleeve, the valve core is in interference fit with the sealing element pressing sleeve and the high-pressure sealing element group, and the sealing element pressing sleeve and the high-pressure sealing element group are sealed at the upper part of the circulation cavity.
Preferably, a fixing nut is sleeved at the joint of the valve core and the valve core driving rod, and the fixing nut is sealed at the top of the circulation cavity.
Preferably, the valve core driving rod is fixedly connected with the coupler through the driving limiting pin, and the position sensing ring is sleeved on the outer side of the driving limiting pin.
Preferably, the lower end of the valve core driving rod is in threaded connection with the fixing nut, a connecting hole is formed in the bottom of the valve core driving rod, the top of the valve core is in clearance fit with the connecting hole, a compression nut is connected to the bottom of the connecting hole, and the valve core is connected to the lower end of the valve core driving rod through the compression nut.
The invention has the beneficial effects that:
1. the proximity switch can monitor the position distance of the position induction coil, control the servo motor to start and close, further control the lifting distance of the valve core, and control the opening degree of the valve core in the flow-through cavity through the servo motor, so that the flow controllability of the valve body is greatly improved, and the control precision and the automation degree of the valve can be effectively improved.
2. The proximity switch can adjust the position through the adjusting rod and the adjusting seat, so that the induction position can be adjusted, the applicability of the valve is larger, and the controllable degree is also larger.
3. The valve core and the driving rod are separately arranged and are connected in a clearance fit manner through the compression nut, when the servo motor drives the valve core driving rod to rotate, the valve core does not rotate along with the valve core driving rod, and the service life of the valve core can be effectively prolonged.
4. The servo ultrahigh-pressure water hydraulic throttle valve has the advantages of simple structure, high reliability, long service life, convenience in operation, simplicity and convenience in maintenance, lower cost, high control precision and the like.
Drawings
FIG. 1 is a front view of a servo ultra-high pressure water hydraulic throttle valve of the present invention;
FIG. 2 is a top view of the servo ultrahigh pressure water hydraulic throttle valve of the present invention;
FIG. 3 is a schematic view of the structural principle of the servo ultrahigh pressure water hydraulic throttle valve of the present invention;
fig. 4 is a left side view of the servo ultrahigh pressure water hydraulic throttle valve of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be connected directly or indirectly through an intermediate medium, or may be connected through the inside of the two elements or through positions in a contact relationship between the two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-4, a servo ultrahigh pressure hydraulic throttle valve comprises a valve body 1, a circulation cavity 17, a fluid inlet and a fluid outlet communicated with the circulation cavity 17 are arranged in the valve body 1, a valve core 2 for adjusting fluid flow is arranged in the circulation cavity 17, the valve core 2 is connected with a servo motor 16 through a coupling 12, the upper end of the valve body 2 is connected with a motor base 8, an approach switch 11 for controlling fluid flow is mounted on the motor base 8, the coupling 12 is connected with the valve core 2 through a valve core driving rod 7, a driving limit pin 10 is mounted at the upper end of the valve core driving rod 7, and a position induction ring 9 is mounted on the driving limit pin 10. The proximity switch 11 is used for controlling the on and off of the servo motor 16, and when the position induction coil 9 is driven by the servo motor 16 to approach the induction surface of the proximity switch 11, the proximity switch 11 can be actuated by sensing the action distance of the position induction coil 9 by the proximity switch 11.
The motor base 8 is internally provided with a cavity 81, the cavity 81 is communicated with the circulation cavity 17, the coupler 12 and the valve core driving rod 7 are arranged in the cavity 81, the proximity switches 11 are arranged on two sides of the cavity 81, and the two proximity switches 11 are arranged oppositely from top to bottom and are respectively used for monitoring the highest position and the lowest position of the position induction coil 9, so that the lifting amplitude of the valve core 2 can be conveniently controlled, and the opening degree of the valve core 2 in the circulation cavity 17 can be accurately controlled. In more detail, the valve core driving rod 7 is fixedly connected with the coupler 12 through the driving limit pin 10, and the position induction ring 9 is sleeved outside the driving limit pin 10. The two proximity switches 11 are respectively used for monitoring the position distance of the position induction coil 9, so that the accuracy of controlling the valve core 2 is improved. In other embodiments, the two proximity switches 11 may be disposed up and down in the same direction, and are respectively used for monitoring the highest position and the lowest position of the position sensing coil 9.
More specifically, in order to improve the position adjustability of the proximity switch 11, a mounting base 13 is mounted on the motor base 8, the proximity switch 11 is mounted on the motor base 8 through the mounting base 13, an adjusting base 14 is arranged above the mounting base 13, an adjusting rod 14 is mounted on the adjusting base 14, and the sensing position of the mounting base 13 is adjusted through the adjusting base 14 and the adjusting rod 15. Motor cabinet 8's both sides are equipped with the confession proximity switch 11 radial movement's long slide opening 82, proximity switch 11 certainly long slide opening 82 extends into motor cabinet 8, mount pad 13 slidable formula setting is in one side of long slide opening 82. The mounting base 13 is provided with a long round hole 131, a screw is matched in the long round hole 131, the mounting base 13 is connected to the side wall of the motor base 8 through a screw, and the mounting base 13 is connected with the adjusting rod 15. A threaded hole is formed in the adjusting seat 14, the adjusting rod 14 is in threaded connection with the adjusting seat 14, in this embodiment, the bottom of the adjusting rod 14 abuts against the top of the mounting seat 13, and the mounting seat 13 can be pushed to move downwards by rotating the adjusting rod 14, so that the position of the proximity switch 11 is adjusted; in other embodiments, the bottom of the adjusting rod 14 may be hinged to the top of the mounting base 13, and the adjusting rod 14 may rotate relative to the mounting base 13 to drive the mounting base 13 to ascend or descend.
As a preferable scheme of this embodiment, the valve body 1 and the valve core 2 are sealed by a high-pressure seal set 3, the upper portion of the high-pressure seal set 3 is a seal pressing sleeve 4, the valve core 2 is in interference fit with the seal pressing sleeve 4 and the high-pressure seal set 3, and the seal pressing sleeve 4 and the high-pressure seal set 3 are sealed at the upper portion of the circulation cavity 17, so as to prevent fluid from flowing into the motor base 8 from the circulation cavity 17 and also prevent fluid from leaking from the valve body 1.
And a fixing nut 5 is sleeved at the joint of the valve core 2 and the valve core driving rod 7, the fixing nut 5 is fixed at the top of the circulation cavity 17 in a sealing manner, and the fixing nut 5 compresses the sealing element compressing sleeve 4. More specifically, the lower end of the valve core driving rod 7 is in threaded connection with the fixing nut 5, a connecting hole is formed in the bottom of the valve core driving rod 7, the top of the valve core 2 is in clearance fit with the connecting hole, the bottom of the connecting hole is connected with a compression nut 6, and the valve core 2 is connected to the lower end of the valve core driving rod 7 through the compression nut 6. In this embodiment, the top of the valve core 2 is a clamping block, the compression nut 6 penetrates the valve core 2, the valve core 2 is suspended on the compression nut 6 under the limit of the clamping block, the valve core 2 is in clearance fit with a round hole of the compression nut 6, the valve core 2 and the valve core driving rod 7 are separately arranged, when the servo motor 16 drives the valve core driving rod 7 to rotate, the valve core 2 cannot rotate along with the valve core driving rod 7, and the service life of the valve core 2 can be effectively prolonged.
The working principle is as follows: under the drive of the servo motor 16, the coupler 12 can drive the valve core driving rod 7 to rotate, the coupler 12 rotates in the forward direction or the reverse direction, the valve core driving rod 7 can rotate in a threaded ring of the fixing nut 5 to ascend or descend, so that the valve core 2 is driven to ascend and descend, the circulation cavity 17 is communicated or cut off with the fluid inlet and the fluid outlet, and the two proximity switches 11 are respectively used for monitoring the highest position and the lowest position of the position induction ring 9, so that the ascending and descending amplitude of the valve core 2 is controlled, and the opening degree of the valve core 2 in the circulation cavity 17 is accurately controlled.
The proximity switch of the servo ultrahigh-pressure water hydraulic throttle valve can monitor the position distance of the position induction coil, control the servo motor to start and close, further control the lifting distance of the valve core, and control the opening degree of the valve core in the flow-through cavity through the servo motor, so that the flow controllability of the valve body is greatly improved, and the control precision and the automation degree of the valve can be effectively improved; and proximity switch can be through adjusting pole and regulation seat adjusting position to make inductive position can adjust, make the valve suitability bigger, controllable degree is also bigger, and the case separately sets up with the actuating lever, connects through gland nut clearance fit, and when servo motor driven valve core actuating lever rotated, the case can not follow the case actuating lever and rotate, can effectively improve case life.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (9)
1. The servo ultrahigh-pressure hydraulic throttling valve comprises a valve body (1), wherein a circulation cavity (17) and a fluid inlet and a fluid outlet communicated with the circulation cavity (17) are arranged in the valve body (1), a valve core (2) used for adjusting the flow of fluid is arranged in the circulation cavity (17), the valve core (2) is connected with a servo motor (16) through a coupler (12), the servo ultrahigh-pressure hydraulic throttling valve is characterized in that the upper end of the valve body (2) is connected with a motor base (8), a proximity switch (11) used for controlling the flow of fluid is installed on the motor base (8), the coupler (12) is connected with the valve core (2) through a valve core driving rod (7), a driving limit pin (10) is installed at the upper end of the valve core driving rod (7), and a position induction ring (9) is installed on the driving limit pin.
2. The servo ultrahigh-pressure water hydraulic throttle valve according to claim 1, characterized in that a cavity (81) is arranged in the motor base (8), the cavity (81) is communicated with the circulation cavity (17), the coupling (12) and the valve core driving rod (7) are arranged in the cavity (81), the proximity switches (11) are arranged on both sides of the cavity (81), and the proximity switches (11) are arranged in an up-down opposite manner.
3. The servo ultrahigh pressure hydraulic throttle valve according to claim 1 or 2, characterized in that a mounting seat (13) is mounted on the motor base (8), the proximity switch (11) is mounted on the motor base (8) through the mounting seat (13), an adjusting seat (14) is arranged above the mounting seat (13), an adjusting rod (14) is mounted on the adjusting seat (14), and the sensing position of the mounting seat (13) is adjusted through the adjusting seat (14) and the adjusting rod (15).
4. A servo ultrahigh pressure water hydraulic throttle valve according to claim 3, characterized in that, both sides of said motor base (8) are provided with long slide holes (82) for radial movement of said proximity switch (11), said proximity switch (11) extends from said long slide holes (82) into said motor base (8), and said mounting base (13) is slidably arranged at one side of said long slide holes (82).
5. The servo ultrahigh pressure hydraulic throttle valve according to claim 4, characterized in that an oblong hole (131) is formed in the mounting seat (13), a screw is fitted in the oblong hole (131), the mounting seat (13) is connected to the side wall of the motor seat (8) through a screw, and the mounting seat (13) is connected with the adjusting rod (15).
6. The servo ultrahigh-pressure water hydraulic throttle valve according to claim 1, characterized in that the valve body (1) and the valve core (2) are sealed by a high-pressure seal group (3), a seal pressing sleeve (4) is arranged on the upper portion of the high-pressure seal group (3), the valve core (2) is in interference fit with the seal pressing sleeve (4) and the high-pressure seal group (3), and the seal pressing sleeve (4) and the high-pressure seal group (3) are sealed on the upper portion of the flow cavity (17).
7. The servo ultrahigh-pressure water hydraulic throttling valve according to claim 1, characterized in that a fixing nut (5) is sleeved at the joint of the valve core (2) and the valve core driving rod (7), and the fixing nut (5) is sealed at the top of the circulation cavity (17).
8. The servo ultrahigh-pressure water hydraulic throttle valve according to claim 1, characterized in that the spool driving rod (7) is fixedly connected with the coupling (12) through the driving limit pin (10), and the position induction ring (9) is sleeved outside the driving limit pin (10).
9. The servo ultrahigh-pressure water hydraulic throttle valve according to claim 7, characterized in that the lower end of the valve core driving rod (7) is in threaded connection with the fixing nut (5), the bottom of the valve core driving rod (7) is provided with a connecting hole, the top of the valve core (2) is in clearance fit with the connecting hole, the bottom of the connecting hole is connected with a compression nut (6), and the valve core (2) is connected to the lower end of the valve core driving rod (7) through the compression nut (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010202658.6A CN111219521A (en) | 2020-03-20 | 2020-03-20 | Servo ultrahigh-pressure water hydraulic throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010202658.6A CN111219521A (en) | 2020-03-20 | 2020-03-20 | Servo ultrahigh-pressure water hydraulic throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111219521A true CN111219521A (en) | 2020-06-02 |
Family
ID=70827357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010202658.6A Pending CN111219521A (en) | 2020-03-20 | 2020-03-20 | Servo ultrahigh-pressure water hydraulic throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111219521A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032311A (en) * | 2020-07-27 | 2020-12-04 | 北京精密机电控制设备研究所 | Assembling method of multistage precise-fit axial stepping mechanism |
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| CN107939981A (en) * | 2017-12-21 | 2018-04-20 | 海杰亚（北京）医疗器械有限公司 | The low temperature electric control valve and adjusting method of preload adjustable |
| CN207864630U (en) * | 2017-12-05 | 2018-09-14 | 广州龙渊液压机械有限公司 | A kind of manual antipollution valve suitable for superelevation water hydraulic |
| CN109667966A (en) * | 2019-01-02 | 2019-04-23 | 中山市铧禧电子科技有限公司 | A kind of automatic pressure regulating mechanism |
| CN212131459U (en) * | 2020-03-20 | 2020-12-11 | 广州龙渊液压机械有限公司 | Servo ultrahigh-pressure water hydraulic throttle valve |
-
2020
- 2020-03-20 CN CN202010202658.6A patent/CN111219521A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203463715U (en) * | 2013-07-29 | 2014-03-05 | 上海申吉仪表有限公司 | Pneumatic and manual transformable three-way control valve |
| CN204592494U (en) * | 2015-03-26 | 2015-08-26 | 上海浩祯自动化技术股份有限公司 | Flow control valve |
| CN207864630U (en) * | 2017-12-05 | 2018-09-14 | 广州龙渊液压机械有限公司 | A kind of manual antipollution valve suitable for superelevation water hydraulic |
| CN107939981A (en) * | 2017-12-21 | 2018-04-20 | 海杰亚（北京）医疗器械有限公司 | The low temperature electric control valve and adjusting method of preload adjustable |
| CN109667966A (en) * | 2019-01-02 | 2019-04-23 | 中山市铧禧电子科技有限公司 | A kind of automatic pressure regulating mechanism |
| CN212131459U (en) * | 2020-03-20 | 2020-12-11 | 广州龙渊液压机械有限公司 | Servo ultrahigh-pressure water hydraulic throttle valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112032311A (en) * | 2020-07-27 | 2020-12-04 | 北京精密机电控制设备研究所 | Assembling method of multistage precise-fit axial stepping mechanism |
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