CN109595358B - Safe type tee bend proportion choke valve structure - Google Patents
Safe type tee bend proportion choke valve structure Download PDFInfo
- Publication number
- CN109595358B CN109595358B CN201811620471.7A CN201811620471A CN109595358B CN 109595358 B CN109595358 B CN 109595358B CN 201811620471 A CN201811620471 A CN 201811620471A CN 109595358 B CN109595358 B CN 109595358B
- Authority
- CN
- China
- Prior art keywords
- valve
- main
- main valve
- hole
- sleeve
- 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.)
- Active
Links
Images
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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
-
- 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
- F16K31/1225—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston with a plurality of pistons
-
- 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
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention relates to the technical field of valves and discloses a safety three-way proportional throttle valve structure which comprises a main valve seat, a displacement sensor and a pilot valve, wherein a P oil port communicated with a main valve cavity is sequentially arranged on the side surface of the main valve seat from top to bottom, the hydraulic control valve comprises a valve sleeve and a valve body, wherein a P through hole is formed in the side face of the valve sleeve corresponding to the P oil hole, an A through hole is formed in the side face of the valve sleeve corresponding to the A oil hole, a T through hole is formed in the side face of the valve sleeve corresponding to the T oil hole, a driving cylinder is arranged on the outer side face of a main valve cover, a hollow main valve core is arranged in the valve sleeve, a first main piston and a second main piston are sequentially arranged on the main valve core from top to bottom, a braking piston is arranged in the driving cylinder, a sensor positioning sleeve is arranged at the upper end of the driving cylinder, the upper end of the main valve core penetrates through the driving cylinder and. The invention has the advantages of good stability, safe use and convenient maintenance.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a safety three-way proportional throttle valve structure.
Background
The tee bend proportion choke valve is extensive be applied to equipment such as die casting machine, forging press, ceramic press, and the basic theory of operation of proportion choke valve: the valve core displacement of the large-drift-diameter proportional throttle valve is controlled in a closed loop mode through the small-specification pilot type proportional servo valve and the displacement sensor on the main valve core, so that the opening degree of the proportional throttle valve is accurately controlled, and the function of adjusting the flow proportion between the oil port P, the oil port A and the oil port T is achieved. The displacement sensor in the conventional three-way proportional throttle valve is directly communicated with the oil port A, the oil port A is a working oil port and is usually connected with a pipeline or an actuating mechanism, the oil port A has large pressure impact or negative pressure, the pressure impact or negative pressure easily causes the displacement sensor to be fatally damaged, and the proportional throttle valve is usually large in size and weight, large in replacement difficulty, long in maintenance and high in cost; and adopt unilateral direction through-flow between the main valve core and the valve barrel of common tee bend proportion choke valve, under the condition that fluid is at large-traffic high pressure drop, can cause the main valve core to produce great radial effort in the removal in-process certainly, influence the velocity of motion and the precision of main valve core on the one hand, on the other hand, can lead to main valve core card to die when radial effort reaches certain degree to as for main valve core can't remove, and then influence the effective control of equipment.
Disclosure of Invention
The invention provides a safe three-way proportional throttle valve structure for solving the problems of the three-way proportional throttle valve in the prior art, wherein a displacement sensor in the throttle valve is very convenient to mount, dismount and replace, the main valve core is uniformly stressed in the circumferential direction and is not easy to block when moving, and the safe three-way proportional throttle valve structure is safer to use.
In order to achieve the purpose, the invention adopts the following technical scheme:
a safety three-way proportional throttle valve structure comprises a main valve seat, a displacement sensor and a pilot valve, a main valve cavity is arranged in the main valve seat, a main valve cover is arranged at the upper end of the main valve cavity, a P oil port, an A oil port and a T oil port which are communicated with the main valve cavity are sequentially arranged on the side surface of the main valve seat from top to bottom, a valve sleeve is arranged in the main valve cavity, a valve sleeve limiting seat is arranged at the bottom of the main valve cavity, a limiting convex ring clamped and sealed with the outer side of the upper end of the valve sleeve is arranged on the inner side surface of the main valve cover, the side surface of the valve sleeve is provided with a P through hole corresponding to the P oil port, the side surface of the valve sleeve is provided with an A through hole corresponding to the A oil port, the side surface of the valve sleeve is provided with a T through hole corresponding to the T oil port, a first isolating ring is arranged at the position, located between the P through hole and the A through hole, of the inner wall of the main valve cavity, and a second isolating ring is arranged at the position, located between the A through hole and the T through hole, of the inner wall of the main valve cavity; a driving cylinder is arranged on the outer side surface of the main valve cover, the axis of the driving cylinder is coaxial with the valve sleeve, a hollow main valve core is arranged in the valve sleeve, the upper end of the main valve core penetrates through the main valve cover and extends into the driving cylinder, a first main piston and a second main piston are sequentially arranged at the position, located in the valve sleeve, of the main valve core from top to bottom, the center of the valve sleeve limiting seat is provided with a sealing hole which is connected with the lower end of the main valve core in a sliding and sealing way, a brake piston which is fixedly connected with the main valve core is arranged in the driving cylinder, the side surface of the driving cylinder is provided with an upper oil hole and a lower oil hole which are respectively connected with the pilot valve through pipelines, the upper end of the driving cylinder is provided with a sensor locating sleeve, the upper end of the main valve core penetrates through the driving cylinder and extends into the sensor locating sleeve, the displacement sensor is fixed in the sensor positioning seat and coaxially extends into the main valve core.
When the hydraulic system is in a power-off state or has no instruction signal, the pilot valve controls the upper oil hole to feed oil and the lower oil hole to feed oil, the brake piston is positioned at the lower end of the driving cylinder, the main valve core, the first main piston and the second main piston are positioned at downward extreme positions, the P through hole and the A through hole are sealed by the first main piston, the A through hole is communicated with the T through hole, namely the P oil hole and the A oil hole are in a stop state, the A oil hole and the T oil hole are in a communicated state, the T oil hole is communicated with the oil tank and is a pressure relief oil hole, namely the A oil hole is relieved through the T oil hole, namely when the hydraulic system has no instruction signal or is suddenly powered off, the A oil; when the pilot valve obtains a command signal, the pilot valve controls the lower oil hole to feed oil and the upper oil hole to return oil, the brake piston moves upwards to drive the main valve core, the first main piston and the second main piston to move upwards, the through hole A and the through hole T are closed by the second main piston, the through hole P is communicated with the through hole A, namely the oil port P and the oil port A are in a communicated state, the oil port A and the oil port T are in a cut-off state, the opening degree between the oil port P (working oil port) and the oil port A can be adjusted through the displacement sensor and the pilot valve so as to accurately adjust the flow, and therefore accurate proportional throttling adjustment is achieved; in the whole using process, the displacement sensor is always isolated and protected through the hollow main valve core, is not influenced by oil pressure impact or negative pressure at the oil port P, the oil port A and the oil port T, is not influenced by high-temperature and low-temperature media, has better stability, is not easy to damage, and thus the service life and the stability of the whole displacement sensor are improved; an independent valve sleeve structure is adopted, and the valve sleeve can be independently processed and assembled and is easy to carry out surface treatment, so that the processing precision of the main valve cavity is greatly reduced, the processing cost is reduced, and the surface treatment cost is reduced; the circumference atress is even when main valve core removes, can not appear the dead condition of card, uses safelyr.
Preferably, the side face of the upper end of the sensor positioning sleeve is provided with a pressure relief oil port. When the both ends junction of main valve core takes place to leak, the oil of leaking can be followed pressure release oil port and arrange to prevent that displacement sensor from receiving the oil pressure effect, but also can judge the encapsulated situation of main valve core both ends junction according to the fluid of pressure release oil port.
Preferably, a plurality of through holes are formed between the valve sleeve and the main valve cavity, the plurality of through holes P are uniformly distributed on the circumferential surface of the valve sleeve, the plurality of through holes A are uniformly distributed on the circumferential surface of the valve sleeve, the plurality of through holes T are uniformly distributed on the circumferential surface of the valve sleeve, and the plurality of through holes T are uniformly distributed on the circumferential surface of the valve sleeve; and sealing rings are arranged between the inner ring of the first isolating ring and the outer wall of the valve sleeve and between the inner ring of the second isolating ring and the outer wall of the valve sleeve. The P through hole, the A through hole and the T through hole are all provided with a plurality of holes which are evenly distributed, so that the large flow between the P oil port and the A oil port and the large flow between the A oil port and the T oil port can be ensured, and the pressure loss is small.
Preferably, a plurality of oil through holes are uniformly distributed along the circumferential direction between two end faces of the first main piston and the second main piston. No matter the oil port P is communicated with the oil port A or the oil port A is communicated with the oil port T, the oil pressures between the two end faces of the first main piston and the two end faces of the second main piston are consistent, so that the main valve core cannot be displaced due to the pressure difference between the end faces of the first main piston and the second main piston, and the stability is better; and the oil through hole greatly lightens the mass of the first main piston and the second main piston, so that the control sensitivity of the pilot valve is improved.
Preferably, the inner wall of the valve sleeve is provided with conical sealing seats distributed along the circumferential direction at the lower side of the P through hole, and the lower end of the first main piston is provided with a sealing conical surface matched with the conical sealing seats. The conical sealing seat has the sealing function with the first main piston and also has the limiting function of downward movement of the main valve core.
Preferably, the pilot valve is a proportional servo valve.
Therefore, the invention has the following beneficial effects: (1) the displacement sensor is completely isolated from the main valve cavity, the oil port A, the oil port P and the oil port T, cannot be influenced by oil pressure impact or negative pressure, cannot be influenced by cold and hot media, and is good in stability, long in service life and not easy to damage; (2) an independent valve sleeve structure is adopted, and the valve sleeve can be independently processed and assembled and is easy to carry out surface treatment, so that the processing precision of the main valve cavity is greatly reduced, the processing cost is reduced, and the surface treatment cost is reduced; (3) the main valve core is not influenced by radial pressure when working, so that the movement is more stable, the main valve core is not easy to be blocked, and the use is safer; (4) the pressure of the two ends of the first piston and the second piston is always kept consistent, the resistance is small when the main valve core moves, and the precision is high.
Drawings
Fig. 1 is a schematic view of the state when the oil port a and the oil port T are communicated.
Fig. 2 is a schematic view of the state when the oil port P and the oil port a are communicated.
Fig. 3 is a partially enlarged view of a portion B in fig. 2.
In the figure: the hydraulic control valve comprises a main valve seat 1, a displacement sensor 2, a pilot valve 3, a main valve cavity 4, a main valve cover 5, a P oil port 6, an A oil port 7, a T oil port 8, a valve sleeve 9, a valve sleeve limiting seat 10, a limiting convex ring 11, a P through hole 12, an A through hole 13, a T through hole 14, a first isolating ring 15, a second isolating ring 16, a driving cylinder 17, a main valve core 18, a first main piston 19, a second main piston 20, a sealing hole 21, a braking piston 22, an upper oil hole 23, a lower oil hole 24, a sensor positioning sleeve 25, a pressure relief oil port 26, an oil through hole 27, a conical sealing seat 90 and a sealing conical surface 190.
Detailed Description
The invention is further described with reference to the accompanying drawings and the detailed description below:
as shown in fig. 1 and fig. 2, a safety three-way proportional throttle valve structure includes a main valve seat 1, a displacement sensor 2, and a pilot valve 3, the pilot valve in this embodiment is a proportional servo valve, a main valve cavity 4 is disposed in the main valve seat, a main valve cover 5 is disposed at the upper end of the main valve cavity, a P oil port 6, an a oil port 7, and a T oil port 8 are sequentially disposed on the side surface of the main valve seat from top to bottom, a valve sleeve 9 is disposed in the main valve cavity, a ring cavity is formed between the valve sleeve and the main valve cavity, a valve sleeve limiting seat 10 is disposed at the bottom of the main valve cavity, a limiting convex ring 11 clamped and sealed with the outer side of the upper end of the valve sleeve is disposed on the inner side surface of the main valve cover, P through holes 12 are disposed on the side surface of the valve sleeve corresponding to the P oil port, a plurality of the P through holes, the valve comprises a valve sleeve, a valve body, a valve cover, a main valve cavity, a plurality of through holes A, a plurality of through holes T, a plurality of sealing rings A, a plurality of sealing rings B and a plurality of sealing rings B, wherein the through holes A are uniformly distributed on the circumferential surface of the valve sleeve;
the outer side surface of the main valve cover 5 is provided with a driving cylinder 17, the axis of the driving cylinder is coaxial with the valve sleeve, a hollow main valve core 18 is arranged in the valve sleeve 9, the upper end of the main valve core penetrates through the main valve cover and extends into the driving cylinder, a first main piston 19 and a second main piston 20 are sequentially arranged at the position, which is positioned in the valve sleeve, on the main valve core from top to bottom, a plurality of oil through holes 27 which are uniformly distributed along the circumferential direction are respectively arranged between the two end surfaces of the first main piston and the second main piston, the center of the valve sleeve limiting seat 10 is provided with a sealing hole 21 which is connected with the lower end of the main valve core in a sliding and sealing way, a brake piston 22 which is fixedly connected with, the upper oil hole and the lower oil hole are respectively connected with the pilot valve through pipelines, the upper end of the driving cylinder is provided with a sensor positioning sleeve 25, the upper end of the main valve core penetrates through the driving cylinder and extends into the sensor positioning sleeve, and the displacement sensor 2 is fixed in the sensor positioning seat and coaxially extends into the main valve core; the side surface of the upper end of the sensor positioning sleeve is provided with a pressure relief oil port 26.
As shown in fig. 3, the inner wall of the valve housing 9 is provided with conical sealing seats 90 distributed along the circumferential direction at the lower side of the P through hole, and the lower end of the first main piston 19 is provided with a sealing conical surface 190 matched with the conical sealing seats.
The principle of the invention is as follows with reference to the attached drawings: as shown in fig. 1, in a power-off state or when there is no instruction signal, the pilot valve controls the upper oil hole to feed oil and the lower oil hole to return oil, the brake piston is located at the lower end of the drive cylinder, the main valve core, the first main piston and the second main piston are located at downward extreme positions, the P through hole and the a through hole are sealed by the first main piston, the a through hole is communicated with the T through hole, that is, the P oil hole and the a oil hole are in a cut-off state, the a oil hole and the T oil hole are in a communicated state, the T oil hole is communicated with the oil tank and is a pressure relief oil hole, that is, the a oil hole is relieved through the T oil hole, that is, when there is no instruction signal or power-off; when the pilot valve obtains a command signal, as shown in fig. 2, the pilot valve controls the lower oil hole to feed oil and the upper oil hole to return oil, the brake piston moves upwards, and further drives the main valve core, the first main piston and the second main piston to move upwards, at the moment, the through hole a and the through hole T are sealed by the second main piston, the through hole P is communicated with the through hole a, namely, the oil port P and the oil port a are in a communicated state, and the oil port a and the oil port T are in a cut-off state, and the opening degree between the oil port P (working oil port) and the oil port a can be adjusted through the displacement sensor and the pilot valve so as to accurately adjust the flow, thereby realizing accurate; in the whole using process, the displacement sensor is always isolated and protected through the hollow main valve core, is not influenced by oil pressure impact or negative pressure at the oil port P, the oil port A and the oil port T, is not influenced by high-temperature and low-temperature media, has better stability, is not easy to damage, and thus the service life and the stability of the whole displacement sensor are improved; an independent valve sleeve structure is adopted, and the valve sleeve can be independently processed and assembled and is easy to carry out surface treatment, so that the processing precision of the main valve cavity is greatly reduced, the processing cost is reduced, and the surface treatment cost is reduced; the circumference atress is even when main valve core removes, can not appear the dead condition of card, uses safelyr. And because the oil circuit (pilot oil circuit) of the pilot valve is totally isolated from the oil circuit (main oil circuit) in the main valve cavity, the pilot valve belongs to two independent oil circuits, the working media in the two oil circuits can adopt independent working media, and are not interfered with each other, for example, the pilot oil circuit adopts conventional hydraulic oil, and the main oil circuit can adopt special media such as high-temperature media, low-temperature media and the like to meet the requirements of special working conditions, so that the universality is stronger.
In this embodiment, signal transmission, processing, control, and feedback between the displacement sensor and the pilot valve are all general techniques in the existing three-way proportional throttle valve, which belong to the prior art and are not the techniques to be protected in this application, and therefore this part of the prior art is not described in detail in this embodiment. The present invention is not limited to the above embodiments, and any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are all covered in the protection scope of the present invention.
Claims (6)
1. A safety three-way proportional throttle valve structure comprises a main valve seat, a displacement sensor and a pilot valve, a main valve cavity is arranged in the main valve seat, a main valve cover is arranged at the upper end of the main valve cavity, a P oil port, an A oil port and a T oil port which are communicated with the main valve cavity are sequentially arranged on the side surface of the main valve seat from top to bottom, it is characterized in that a valve sleeve is arranged in the main valve cavity, a valve sleeve limiting seat is arranged at the bottom of the main valve cavity, the inner side surface of the main valve cover is provided with a limiting convex ring which is clamped and sealed with the outer side of the upper end of the valve sleeve, the side surface of the valve sleeve is provided with a P through hole at the position corresponding to the P oil port, the side surface of the valve sleeve is provided with an A through hole at the position corresponding to the A oil port, the side surface of the valve sleeve is provided with a T through hole at the position corresponding to the T oil port, a first isolating ring is arranged at the position, located between the P through hole and the A through hole, of the inner wall of the main valve cavity, and a second isolating ring is arranged at the position, located between the A through hole and the T through hole, of the inner wall of the main valve cavity; a driving cylinder is arranged on the outer side surface of the main valve cover, the axis of the driving cylinder is coaxial with the valve sleeve, a hollow main valve core is arranged in the valve sleeve, the upper end of the main valve core penetrates through the main valve cover and extends into the driving cylinder, a first main piston and a second main piston are sequentially arranged at the position, located in the valve sleeve, of the main valve core from top to bottom, the center of the valve sleeve limiting seat is provided with a sealing hole which is connected with the lower end of the main valve core in a sliding and sealing way, a brake piston which is fixedly connected with the main valve core is arranged in the driving cylinder, the side surface of the driving cylinder is provided with an upper oil hole and a lower oil hole which are respectively connected with the pilot valve through pipelines, the upper end of the driving cylinder is provided with a sensor locating sleeve, the upper end of the main valve core penetrates through the driving cylinder and extends into the sensor locating sleeve, the displacement sensor is fixed in the sensor positioning sleeve and coaxially extends into the main valve core.
2. The safety three-way proportional throttle valve structure according to claim 1, wherein a pressure relief oil port is formed in the side surface of the upper end of the sensor positioning sleeve.
3. The safety three-way proportional throttle valve structure according to claim 1, wherein a plurality of P through holes are formed between the valve sleeve and the main valve cavity, the P through holes are uniformly distributed on the circumferential surface of the valve sleeve, the a through holes are uniformly distributed on the circumferential surface of the valve sleeve, the T through holes are uniformly distributed on the circumferential surface of the valve sleeve, and the T through holes are uniformly distributed on the circumferential surface of the valve sleeve; and sealing rings are arranged between the inner ring of the first isolating ring and the outer wall of the valve sleeve and between the inner ring of the second isolating ring and the outer wall of the valve sleeve.
4. The safety three-way proportional throttle valve structure according to claim 1, 2 or 3, wherein a plurality of oil through holes are uniformly distributed along the circumferential direction between two end faces of the first main piston and the second main piston.
5. The safety three-way proportional throttle valve structure as claimed in claim 1, wherein the inner wall of the valve housing is provided with conical sealing seats distributed along the circumferential direction at the lower side of the P through hole, and the lower end of the first main piston is provided with a sealing conical surface matched with the conical sealing seats.
6. The safety three-way proportional throttle valve structure as claimed in claim 1, wherein the pilot valve is a proportional servo valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811620471.7A CN109595358B (en) | 2018-12-27 | 2018-12-27 | Safe type tee bend proportion choke valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811620471.7A CN109595358B (en) | 2018-12-27 | 2018-12-27 | Safe type tee bend proportion choke valve structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109595358A CN109595358A (en) | 2019-04-09 |
| CN109595358B true CN109595358B (en) | 2020-11-10 |
Family
ID=65962728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811620471.7A Active CN109595358B (en) | 2018-12-27 | 2018-12-27 | Safe type tee bend proportion choke valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109595358B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU88277A1 (en) * | 1993-05-27 | 1994-12-01 | Hydrolux Sarl | Pilot operated servo valve |
| CN103038558B (en) * | 2010-06-11 | 2015-09-02 | 布勒股份公司 | valve configurations |
| US9970557B2 (en) * | 2016-06-27 | 2018-05-15 | Travis Victor Dean Loewen | Multi-pilot variable pressure relay valve |
| CN108757623B (en) * | 2018-08-20 | 2024-05-10 | 刘永 | Stable two-way proportional throttle valve |
-
2018
- 2018-12-27 CN CN201811620471.7A patent/CN109595358B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109595358A (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9453518B2 (en) | Proportional pressure-regulating valve | |
| CN201209679Y (en) | Proportional guide servo control fully-active throttle cartridge valve | |
| US9395014B2 (en) | Pilot-control stage for a proportionally controlled high-pressure hydraulic valve | |
| CN102705286B (en) | Balanced high-pressure large-current AC (Alternating Current) servo direct-driven cartridge valve | |
| KR20210141620A (en) | Multi Sealing High Speed Solenoid Valve | |
| CN108591158B (en) | High-pressure large-flow two-position four-way hydraulic control reversing valve | |
| CN110131240B (en) | Hydraulic position and pressure closed-loop control dynamic and static simulation test system and method | |
| CN110273887B (en) | Servo actuator | |
| US4385746A (en) | Four-way plug valve | |
| CN111911216A (en) | Directional flow valve with continuous flow adjusting function and control method thereof | |
| CN109595358B (en) | Safe type tee bend proportion choke valve structure | |
| CN108757623B (en) | Stable two-way proportional throttle valve | |
| CN103591070A (en) | Thread direct-drive-type electro-hydraulic proportional flow valve of permanent-magnetic alternating-current servo motor | |
| SE440126B (en) | servo valve | |
| CN207004985U (en) | Hydraulic pressure valve core detects controlling organization | |
| CN109245489A (en) | A kind of hydraulic feedback permanent magnet speed regulation device | |
| CN210859416U (en) | Hydraulic position and pressure closed-loop control dynamic and static simulation test system | |
| CN102162476A (en) | High-flow hydraulic feedback pilot control plug-type proportion throttle valve system | |
| CN106641386B (en) | Pressure compensation electricity ratio seat valve | |
| CN203906930U (en) | Water three-way regulating valve | |
| CN103672138A (en) | Single-pedal type foot valve | |
| CN204493336U (en) | For the distributor of tractor | |
| CN108547982B (en) | A kind of controllable angle-style check-valves of aperture | |
| CN108644183B (en) | Pump control type electrohydraulic actuator system | |
| CN208793353U (en) | Proportional throttle valve structure is led in stable type two |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |