CN110594227A - Two-position three-way reversing valve with self-locking gas circuit - Google Patents
Two-position three-way reversing valve with self-locking gas circuit Download PDFInfo
- Publication number
- CN110594227A CN110594227A CN201910922722.5A CN201910922722A CN110594227A CN 110594227 A CN110594227 A CN 110594227A CN 201910922722 A CN201910922722 A CN 201910922722A CN 110594227 A CN110594227 A CN 110594227A
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- control assembly
- piston
- valve core
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- 238000007789 sealing Methods 0.000 claims abstract description 13
- 210000004907 gland Anatomy 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- 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
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Driven Valves (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a gas path self-locking two-position three-way reversing valve, which comprises: the valve comprises a valve body, an electromagnetic actuator, a pilot valve core, a pilot valve seat, a first air control assembly and a second air control assembly, wherein the first air control assembly and the second air control assembly respectively comprise a bottom cover, a piston and an air control valve core, the front end of a valve core cavity is respectively provided with a first air passage communicated with an air supply pipe joint, the inner wall of the valve core cavity is respectively provided with a second air passage extending to the outer side of the valve body, a third air passage communicated with the first air control assembly and corresponding to the valve core cavity and the second air control assembly and corresponding to an air inlet chamber is arranged in the valve body, and a fourth air passage communicated with the air supply pipe joint and a pilot valve seat fixing hole is arranged in the valve body. Through the mode, the gas path self-locking two-position three-way reversing valve is simple and convenient to operate, achieves quick reversing, and meanwhile strengthens the sealing performance and self-locks when a single first gas path port is closed, so that reversing is more thorough.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a two-position three-way reversing valve with a self-locking gas circuit.
Background
The gas reversing valve is one of valves, can change the flow direction of gas flow in due time, realizes reversing operation of an actuator, and has wide application in the fields of gas production and use.
The existing reversing valve needs to switch an air flow channel by a valve core to realize reversing, the requirement of air flow on the tightness of the channel is high, particularly, the tightness of the switching part of the channel cannot be guaranteed, the leakage problem is easy to generate, the reversing is incomplete or the power loss is caused, and the improvement is needed.
Disclosure of Invention
The invention mainly solves the technical problem of providing the gas path self-locking two-position three-way reversing valve, which utilizes airflow to seal and lock the switching part of the airflow channel, improves the sealing effect, ensures the convenience and the thoroughness of reversing and reduces the power loss.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a two three-way switching-over valves of gas circuit auto-lock, includes: the electromagnetic valve comprises a valve body, an electromagnetic actuator, a pilot valve core, a pilot valve seat, a first air control assembly and a second air control assembly, wherein an air supply pipe joint is arranged on one side of the valve body, mounting cavities which correspond to the first air control assembly and the second air control assembly one by one are arranged in the valve body at intervals, the mounting cavities respectively comprise a bottom cover mounting hole, a piston mounting cavity and a valve core cavity which are sequentially communicated from outside to inside, the first air control assembly and the second air control assembly respectively comprise a bottom cover, a piston and an air control valve core, the bottom cover is arranged in the bottom cover mounting hole, the air control valve core is arranged in the valve core cavity, the piston is positioned in the piston mounting cavity, an air inlet chamber is formed between the piston and the bottom cover in the piston mounting cavity, first air passages communicated with the air supply pipe are respectively arranged at the front end of the valve core cavity, and second air passages extending to the outer side of the valve body are respectively arranged, the valve is characterized in that a third air passage communicated with a first air control assembly corresponding to the valve core cavity and a second air control assembly corresponding to the air inlet chamber is arranged in the valve body, a pilot valve seat fixing hole is formed in the valve body, a fourth air passage communicated with an air supply pipe joint and the pilot valve seat fixing hole is formed in the valve body, the pilot valve core is arranged in the pilot valve seat to control the fourth air passage, a first driven rod penetrating through the pilot valve seat and extending upwards is arranged at the top of the pilot valve core, the electromagnetic actuator is arranged on the valve body to drive the first driven rod, and a fifth air passage communicated with the pilot valve seat fixing hole and corresponding to the air inlet chamber with the first air control assembly is arranged in the valve body.
In a preferred embodiment of the present invention, the electromagnetic actuator is connected to the pilot valve seat fixing hole in a threaded manner, and when the electromagnetic actuator is powered on, the electromagnetic actuator drives the first passive rod to descend.
In a preferred embodiment of the invention, a return spring is arranged between the lower part of the outer circle of the pilot valve core and the bottom of the pilot valve seat fixing hole, sealing rubber rings are respectively arranged at two ends of the pilot valve core and the air control valve core, and a plurality of vent grooves axially extending to the front end are concavely arranged on the outer circle of the air control valve core.
In a preferred embodiment of the present invention, the third air passage has a C-shaped structure.
In a preferred embodiment of the present invention, the first air control assembly and the second air control assembly further include a spiral ring, a diaphragm gland, a diaphragm, a piston sleeve and an air control valve seat sequentially arranged in the piston mounting cavity, the air control valve seat is fixed at the end of the piston mounting cavity in a threaded manner, the piston is arranged in the piston sleeve, the rear end of the air control valve core is respectively provided with a second passive rod penetrating through the corresponding air control valve seat and pointing to the piston, the diaphragm is located at the rear end of the piston sleeve for elastic plugging, the diaphragm gland is arranged at the rear end of the diaphragm for pressing the edge of the diaphragm, the diaphragm gland is provided with a plurality of air holes, and the spiral ring is fixed in the piston mounting cavity in a threaded manner for limiting the diaphragm gland.
In a preferred embodiment of the present invention, the front end of the diaphragm pressing cover is concavely provided with a diaphragm rear convex avoiding groove.
In a preferred embodiment of the invention, an exhaust chamber is directly formed in the piston mounting cavity between the piston sleeve and the air control valve seat, and an air release hole communicated with the exhaust chamber is arranged on the outer side of the valve body.
In a preferred embodiment of the invention, an actuating air passage pipe joint corresponding to the second air passage is arranged outside the valve body.
In a preferred embodiment of the present invention, when the electromagnetic actuator is not powered, the pilot valve core keeps the fourth air passage open under the action of the return spring, and sends the air flow from the air supply pipe joint to the fifth air passage and the air inlet chamber corresponding to the first air control assembly, so as to drive the piston in the first air control assembly to move forward, so that the air control valve core moves forward to block the corresponding first air passage, and keeps the second air control assembly open corresponding to the first air passage, and sends the air flow from the air supply pipe joint to the second air passage corresponding to the second air control assembly.
In a preferred embodiment of the present invention, when the electromagnetic actuator is powered, the pilot valve core closes the fourth air passage, and sends the airflow from the air supply pipe joint to the third air passage, and drives the piston in the second air control assembly to move forward, so that the air control valve core moves forward to block the corresponding first air passage, and keep the first air control assembly open corresponding to the first air passage, and separately send the airflow from the air supply pipe joint to the second air passage corresponding to the first air control assembly, thereby achieving the airflow reversing.
The invention has the beneficial effects that: the two-position three-way reversing valve with the self-locking air passage utilizes the electromagnetic actuator to drive the pilot valve core, is simple and convenient to operate, realizes the driving of air flow on the first air control assembly or the second air control assembly, increases the action sensitivity of the air control valve core and the pressure when the corresponding first air passage is blocked, realizes quick reversing, and simultaneously strengthens the sealing property and self-locking when the port of the single first air passage is closed, so that the reversing is more thorough, the air flow leakage is avoided, and the problem of power consumption is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a preferred embodiment of a two-position three-way reversing valve with self-locking gas paths according to the present invention;
FIG. 2 is a cross-sectional view taken along line C-C of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
fig. 4 is a schematic structural view of the first gas control assembly of fig. 2 with the first gas control assembly removed.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Referring to fig. 1 ~ and fig. 4, an embodiment of the invention includes:
the two-position three-way reversing valve with the self-locking gas path shown in figure 1 comprises: the air supply valve comprises a valve body 1, an electromagnetic actuator 17, a pilot valve core 16, a pilot valve seat 15, a first air control assembly and a second air control assembly, wherein an air supply pipe joint 27 is arranged on one side of the valve body 1 to supply air flow.
As shown in fig. 4, two sets of installation cavities corresponding to the first air control assembly and the second air control assembly one to one are arranged in the valve body 1 at intervals, the installation cavities respectively include a bottom cover installation hole 21, a piston installation cavity 22 and a valve core cavity 23 which are sequentially communicated from outside to inside, and the front end of the valve core cavity 23 is respectively provided with a first air passage 28 communicated with a joint of an air supply pipe 27 for introducing air flow.
As shown in fig. 2, the first gas control assembly and the second gas control assembly respectively include a bottom cover 2, a piston 9 and a gas control valve core 12, the bottom cover 2 is disposed in a bottom cover mounting hole 21 in a threaded manner, and a first sealing ring 4 is additionally installed to seal the bottom cover, so as to prevent gas from leaking.
First accuse gas subassembly and second accuse gas subassembly still respectively including spiral ring 3, diaphragm gland 5, diaphragm 6, piston cover 8 and the accuse gas valve seat 10 of arranging in proper order in piston installation cavity 22, accuse gas valve seat 10 adopts the screw thread mode to fix at piston installation cavity 22 front end to adopt second sealing washer 11 to seal, piston 9 sets up in piston cover 8, carries out piston 9's direction through piston cover 8, is provided with third sealing washer 7 on the 8 excircles of piston cover and seals, avoids gas leakage problem.
The air control valve core 12 is arranged in a valve core cavity 23, an air inlet chamber 20 is formed between the piston 9 and the bottom cover 2 in the piston mounting cavity 22, and after the air inlet chamber 20 is ventilated, the piston 9 is driven. The inner wall of the valve core cavity 23 is provided with second air passages 25 extending to the outer side of the valve body 1, as shown in fig. 3, the outer side of the valve body 1 is provided with an execution air passage pipe joint a and an execution air passage pipe joint B corresponding to the second air passages 25, and the air flow switching of the execution air passage pipe joint a and the execution air passage pipe joint B is performed through the first air control assembly and the second air control assembly.
As shown in fig. 4, a third air passage 26 communicating a valve core cavity corresponding to the first air control assembly and an air inlet chamber corresponding to the second air control assembly is arranged in the valve body 1, the third air passage 26 is of a C-shaped structure, and the third air passage 26 of the C-shaped structure built in the valve body 1 is realized by drilling a process hole and blocking an end part.
The rear end of the air control valve core 12 is respectively provided with a second passive rod which penetrates through the corresponding air control valve seat 10 and points to the piston 9, forward driving of the air control valve core 12 is performed through the piston, the diaphragm 6 is located at the rear end of the piston sleeve 8 to be elastically plugged, the diaphragm gland 5 is arranged at the rear end of the diaphragm to press and fix the edge of the diaphragm 6, structural stability of the edge of the diaphragm 6 is improved, the diaphragm 6 is made of elastic materials, such as plastic sheets, after the air inlet chamber 20 is ventilated, the middle of the diaphragm 6 expands forwards to drive the piston 9 to move forwards, gas is isolated, contact between gas and the piston 9 is avoided, and risk of gas leakage is further reduced.
The diaphragm gland 5 is provided with a plurality of air holes, so that the air in the air inlet chamber 20 can reach the outer side surface of the diaphragm 6, and the spiral ring 3 is fixed in the piston mounting cavity 22 in a threaded mode to limit the diaphragm gland 5. The middle part of the front end of the diaphragm gland 5 is concavely provided with a diaphragm rear convex avoiding groove, and the retreating of the piston 9 is not influenced. An exhaust chamber is directly formed in the piston mounting cavity 22 between the piston sleeve 8 and the air control valve seat, an air leakage hole 24 communicated with the exhaust chamber is formed in the outer side of the valve body, and exhaust is performed when the piston 9 moves forwards.
The valve body 1 is provided with a pilot valve seat fixing hole, the pilot valve seat 15 is arranged in the pilot valve seat fixing hole in a threaded mode and sealed by a fourth sealing ring 13, and air flow leakage is avoided. The valve body is internally provided with a fourth air passage 19 for communicating the air supply pipe joint 27 with a pilot valve seat fixing hole, the pilot valve core 16 is arranged in the pilot valve seat to control the fourth air passage 19, the top of the pilot valve core 16 is provided with a first passive rod which penetrates through the pilot valve seat 15 and extends upwards, the electromagnetic actuator 17 is arranged on the valve body 1 to drive the first passive rod, the valve body 1 is internally provided with a fifth air passage 18 for communicating the pilot valve seat fixing hole with an air inlet chamber corresponding to the first air control assembly, and the fifth air passage 18 and the fourth air passage 19 are communicated and closed through the pilot valve core 16.
The electromagnetic actuator 17 is connected with the pilot valve seat fixing hole in a threaded mode, the electromagnetic actuator 17 drives the first driven rod to descend when being powered on, the fifth air channel 18 and the fourth air channel 19 are closed, the electromagnetic actuator 17 is a manual-automatic integrated electromagnetic actuator, operation can be performed manually, and flexibility is high.
And a return spring 14 is arranged between the lower part of the outer circle of the pilot valve core 16 and the bottom of the pilot valve seat fixing hole, and when the electromagnetic actuator 17 is powered off, the return spring 14 drives the first driven rod to ascend and reset so as to realize the opening of the fifth air passage 18 and the fourth air passage 19.
And sealing rubber rings are respectively arranged at two ends of the pilot valve core 16 and the air control valve core 12, so that the sealing performance during air flow control is improved, and the leakage problem is avoided. The excircle of the air control valve core 12 is concavely provided with a plurality of vent grooves which axially extend to the front end, when the air control valve core 12 retreats, air flow enters the valve core cavity 23 through the corresponding first air passage 28 and the vent grooves so as to enter the corresponding second air passage 25, and when the air control valve core 12 advances, the first air passage 28 is blocked through a sealing rubber ring, so that the air tightness is good.
The electromagnetic actuator 17 adopts a manual-automatic integrated electromagnetic actuator, can be operated manually and has high flexibility. When the electromagnetic actuator 17 is not powered, the pilot valve core 16 keeps the fourth air passage 19 open under the action of the return spring 14, sends the air flow from the air supply pipe joint 27 into the fifth air passage 18 and the air inlet chamber corresponding to the first air control assembly, drives the piston in the first air control assembly to move forward, so that the air control valve core moves forward to block the corresponding first air passage, keeps the second air control assembly open corresponding to the first air passage, sends the air flow from the air supply pipe joint into the second air passage corresponding to the second air control assembly, discharges the air flow through the execution air passage pipe joint B, and keeps the forward movement state of the piston in the first air control assembly through the air flow to realize the closing and locking of the corresponding first air passage;
when the electromagnetic actuator 17 is powered on, the pilot valve core 16 descends to close the fourth air passage, air flow from the air supply pipe joint 27 is sent to the third air passage 26 to drive the piston in the second air control assembly to move forwards, so that the air control valve core moves forwards to block the corresponding first air passage, the first air control assembly is kept open corresponding to the first air passage, the air flow from the air supply pipe joint is sent to the second air passage corresponding to the first air control assembly independently, the air flow is discharged through the execution air passage pipe joint A to realize air passage reversing, the forward movement state of the piston in the second air control assembly is kept through the air flow, and the closing and locking of the corresponding first air passage are realized.
In conclusion, the gas path self-locking two-position three-way reversing valve disclosed by the invention can be used for manually or electrically reversing a gas path, is high in switching speed and good in gas path sealing performance, avoids the problems of leakage and pressure reduction, and improves the use safety and stability.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a two tee bend switching-over valves of gas circuit auto-lock which characterized in that includes: the electromagnetic valve comprises a valve body, an electromagnetic actuator, a pilot valve core, a pilot valve seat, a first air control assembly and a second air control assembly, wherein an air supply pipe joint is arranged on one side of the valve body, mounting cavities which correspond to the first air control assembly and the second air control assembly one by one are arranged in the valve body at intervals, the mounting cavities respectively comprise a bottom cover mounting hole, a piston mounting cavity and a valve core cavity which are sequentially communicated from outside to inside, the first air control assembly and the second air control assembly respectively comprise a bottom cover, a piston and an air control valve core, the bottom cover is arranged in the bottom cover mounting hole, the air control valve core is arranged in the valve core cavity, the piston is positioned in the piston mounting cavity, an air inlet chamber is formed between the piston and the bottom cover in the piston mounting cavity, first air passages communicated with the air supply pipe are respectively arranged at the front end of the valve core cavity, and second air passages extending to the outer side of the valve body are respectively arranged, the valve is characterized in that a third air passage communicated with a first air control assembly corresponding to the valve core cavity and a second air control assembly corresponding to the air inlet chamber is arranged in the valve body, a pilot valve seat fixing hole is formed in the valve body, a fourth air passage communicated with an air supply pipe joint and the pilot valve seat fixing hole is formed in the valve body, the pilot valve core is arranged in the pilot valve seat to control the fourth air passage, a first driven rod penetrating through the pilot valve seat and extending upwards is arranged at the top of the pilot valve core, the electromagnetic actuator is arranged on the valve body to drive the first driven rod, and a fifth air passage communicated with the pilot valve seat fixing hole and corresponding to the air inlet chamber with the first air control assembly is arranged in the valve body.
2. The gas circuit self-locking two-position three-way reversing valve according to claim 1, wherein the electromagnetic actuator is connected with the pilot valve seat fixing hole in a threaded manner, and the electromagnetic actuator drives the first driven rod to descend when being powered on.
3. The gas circuit self-locking two-position three-way reversing valve according to claim 1, wherein a return spring is arranged between the lower part of the outer circle of the pilot valve core and the bottom of the pilot valve seat fixing hole, sealing rubber rings are respectively arranged at two ends of the pilot valve core and the gas control valve core, and a plurality of vent grooves axially extending to the front end are concavely arranged on the outer circle of the gas control valve core.
4. The gas circuit self-locking two-position three-way reversing valve according to claim 1, wherein the third gas channel is of a C-shaped structure.
5. The two-position three-way reversing valve with the self-locking air passage according to claim 1, wherein the first air control assembly and the second air control assembly further respectively comprise a spiral ring, a diaphragm gland, a diaphragm, a piston sleeve and an air control valve seat which are sequentially arranged in the piston installation cavity, the air control valve seat is fixed at the tail end of the piston installation cavity in a threaded mode, the piston is arranged in the piston sleeve, the rear end of the air control valve core is respectively provided with a second passive rod which penetrates through the corresponding air control valve seat and points to the piston, the diaphragm is located at the rear end of the piston sleeve to be elastically plugged, the diaphragm gland is arranged at the rear end of the diaphragm to press and fix the edge of the diaphragm, the diaphragm gland is provided with a plurality of air holes, and the spiral ring is fixed in the piston installation cavity in a threaded mode to limit the diaphragm gland.
6. The gas circuit self-locking two-position three-way reversing valve according to claim 5, wherein a diaphragm rear-convex avoiding groove is concavely arranged at the front end of the diaphragm gland.
7. The gas circuit self-locking two-position three-way reversing valve according to claim 5, wherein an exhaust chamber is directly formed in the piston mounting cavity between the piston sleeve and the gas control valve seat, and an air leakage hole communicated with the exhaust chamber is formed in the outer side of the valve body.
8. The gas circuit self-locking two-position three-way reversing valve according to claim 1, wherein an execution gas circuit pipe joint corresponding to the second gas circuit is arranged on the outer side of the valve body.
9. The gas circuit self-locking two-position three-way reversing valve according to claim 3, wherein when the electromagnetic actuator is not powered, the pilot valve core keeps the opening of the fourth gas channel under the action of the return spring, the gas flow from the gas supply pipe joint is sent to the fifth gas channel and the gas inlet chamber corresponding to the first gas control assembly, the piston in the first gas control assembly is driven to move forward, the gas control valve core moves forward to block the corresponding first gas channel, the second gas control assembly is kept open corresponding to the first gas channel, and the gas flow from the gas supply pipe joint is sent to the second gas control assembly corresponding to the second gas channel.
10. The gas circuit self-locking two-position three-way reversing valve according to claim 9, wherein when the electromagnetic actuator is powered on, the pilot valve core closes the fourth gas channel, the gas flow from the gas supply pipe joint is sent to the third gas channel, the piston in the second gas control assembly is driven to move forward, the gas control valve core moves forward to block the corresponding first gas channel, the first gas control assembly is kept open corresponding to the first gas channel, and the gas flow from the gas supply pipe joint is sent to the second gas channel corresponding to the first gas control assembly independently to realize gas flow reversing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910922722.5A CN110594227B (en) | 2019-09-27 | 2019-09-27 | Two-position three-way reversing valve with self-locking gas circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910922722.5A CN110594227B (en) | 2019-09-27 | 2019-09-27 | Two-position three-way reversing valve with self-locking gas circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110594227A true CN110594227A (en) | 2019-12-20 |
| CN110594227B CN110594227B (en) | 2024-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910922722.5A Active CN110594227B (en) | 2019-09-27 | 2019-09-27 | Two-position three-way reversing valve with self-locking gas circuit |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87208982U (en) * | 1987-06-08 | 1988-12-14 | 王传友 | Diaphragm pneumatic change valve |
| CN201159309Y (en) * | 2008-02-28 | 2008-12-03 | 毛孟其 | Two-position three-way air control valve |
| US20090093338A1 (en) * | 2007-10-05 | 2009-04-09 | Denso Corporation | Hydraulic control unit |
| CN101846111A (en) * | 2010-06-10 | 2010-09-29 | 江苏鼎晟液压有限公司 | Pilot proportional multi-path reversing valve |
| CN104033438A (en) * | 2014-06-09 | 2014-09-10 | 烟台宝钢钢管有限责任公司 | Multi-functional hydraulic-jamming preventing pilot valve for electro-hydraulic directional valve |
| CN104390037A (en) * | 2014-10-31 | 2015-03-04 | 无锡气动技术研究所有限公司 | Four-position five-way reversal valve |
| CN211082429U (en) * | 2019-09-27 | 2020-07-24 | 昆山海芯机电科技有限公司 | Two-position three-way reversing valve with self-locking gas circuit |
-
2019
- 2019-09-27 CN CN201910922722.5A patent/CN110594227B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87208982U (en) * | 1987-06-08 | 1988-12-14 | 王传友 | Diaphragm pneumatic change valve |
| US20090093338A1 (en) * | 2007-10-05 | 2009-04-09 | Denso Corporation | Hydraulic control unit |
| CN201159309Y (en) * | 2008-02-28 | 2008-12-03 | 毛孟其 | Two-position three-way air control valve |
| CN101846111A (en) * | 2010-06-10 | 2010-09-29 | 江苏鼎晟液压有限公司 | Pilot proportional multi-path reversing valve |
| CN104033438A (en) * | 2014-06-09 | 2014-09-10 | 烟台宝钢钢管有限责任公司 | Multi-functional hydraulic-jamming preventing pilot valve for electro-hydraulic directional valve |
| CN104390037A (en) * | 2014-10-31 | 2015-03-04 | 无锡气动技术研究所有限公司 | Four-position five-way reversal valve |
| CN211082429U (en) * | 2019-09-27 | 2020-07-24 | 昆山海芯机电科技有限公司 | Two-position three-way reversing valve with self-locking gas circuit |
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| Publication number | Publication date |
|---|---|
| CN110594227B (en) | 2024-08-20 |
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