CN105736710A - Proportional control valve - Google Patents
Proportional control valve Download PDFInfo
- Publication number
- CN105736710A CN105736710A CN201610219435.4A CN201610219435A CN105736710A CN 105736710 A CN105736710 A CN 105736710A CN 201610219435 A CN201610219435 A CN 201610219435A CN 105736710 A CN105736710 A CN 105736710A
- Authority
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- China
- Prior art keywords
- voltage stabilizing
- air
- spool
- stabilizing chamber
- port
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
Abstract
The invention discloses a proportional control valve. An air inlet connected with an air source, a pressure opening connected with equipment to be controlled, a first adjusting mechanism arranged between the air inlet and the pressure opening and a pressure stabilization cavity located at the position, between the first adjusting mechanism and the pressure opening, in a main airflow cavity channel are arranged in the main airflow cavity channel; and the first adjusting mechanism is used for opening or closing the main airflow cavity channel according to a preset proportion relation, and therefore airflow entering the pressure stabilization cavity is adjusted, and air pressure in the pressure stabilization cavity is kept within a preset air pressure range. The technical problems that an existing proportional control valve has response lag and is inaccurate in air pressure adjustment and instable in air pressure are solved.
Description
Technical field
The present invention relates to gas pressure controlling device field, in particular to a kind of proportional control valve.
Background technology
Proportional control valve is used for regulated fluid pressure thus other equipment are completed corresponding control, proportional control valve is such as just installed in the brakes of truck, the air inlet of proportional control valve is connected with air pump, pressure port is connected with brake unit, controls suitable air-flow by pressure port entrance brake unit thus complete braking procedure according to the degree of depth of stepping on of brake pedal according to certain proportionate relationship when brake pedal high pressure draught enters proportional control valve.There is delayed, air pressure adjustment is inaccurate and air pressure is unstable defect accordingly in existing proportional control valve.
The response lag that exists for existing proportional control valve, the technical problem that air pressure adjustment is inaccurate and air pressure is unstable, not yet propose effective solution at present.
Summary of the invention
Embodiments provide a kind of proportional control valve, solve at least the response lag that existing proportional control valve exists, the technical problem that air pressure adjustment is inaccurate and air pressure is unstable.
According to embodiments of the present invention, it is provided that a kind of proportional control valve, including: primary air tract, there is air inlet and pressure port, air inlet is connected with source of the gas, and pressure port is connected with equipment to be controlled；First governor motion, is arranged in primary air tract and between air inlet and pressure port；Voltage stabilizing chamber, in primary air tract between the first governor motion and pressure port, first governor motion thus regulating the air-flow entered in voltage stabilizing chamber, makes the air pressure in voltage stabilizing chamber be maintained within the scope of preset pressure for opening or closing primary air tract according to preset ratio relation.
Further, first governor motion includes: spool, it is movably disposed in primary air tract and between air inlet and voltage stabilizing chamber, when spool moves to the first predeterminated position, main air flow passage is opened and make air inlet and voltage stabilizing chamber, when spool moves to the second predeterminated position, main air flow passage is closed and make air inlet cut off with voltage stabilizing chamber；Driving device, is connected with spool, is used for driving spool to move in main air flow passage.
Further, the first end of spool has valve core head, and valve core head is connected on the first spring base by the first spring, and driving device is connected with the second end of spool, has the first valve port mated with valve core head in main air flow passage；Wherein, valve core head compresses the first valve port under the elastic force of the first spring promotes and is cut off with voltage stabilizing chamber by air inlet, promotes the second end of spool and overcome the resistance of the first spring to make valve core head and the first valve port separate air inlet and voltage stabilizing chamber during driving device work.
Further, spool has the flow-guiding channel of connection voltage stabilizing chamber and bleeder port, flow-guiding channel has the first opening of the first end being positioned at spool and the second opening of the second end being positioned at spool, wherein, driving device has the drive rod arranged with spool coaxial inner conductor, the leading section of drive rod has the push rod cup that the second opening with flow-guiding channel mates, push rod cup is provided with the second spring hindering drive rod to stretch out, drive rod is made to stretch out towards the second end of spool during driving device work, being pressed on by push rod cup on the second opening makes flow-guiding channel close, when driving device quits work, push rod cup separates with the second opening under the elastic force of the second spring promotes and is opened by flow-guiding channel.
Further, spool is also socketed with the first sealing member, first sealing member is connected by seal joint and the second spring, there is in primary air tract the second valve port mated with the first sealing member, air inlet is connected by the second valve port with bleeder port, when drive rod is towards the second end motion of spool, push rod cup promotes seal joint to be pressed on the second valve port by the first sealing member by spool and is closed by the second valve port.
Further, driving device also includes the 3rd spring that is connected to drive rod rearward end and hinders drive rod to stretch out.
Further, proportional control valve also includes: the second governor motion, is arranged in the main air flow passage between voltage stabilizing chamber and pressure port, for regulating the air-flow being flowed to pressure port by voltage stabilizing chamber, makes the air pressure in voltage stabilizing chamber be maintained within the scope of preset pressure.
Further, second governor motion includes: the second sealing member, wherein, there is between voltage stabilizing chamber and pressure port the 3rd valve port mated with the second sealing member, being connected to the 4th spring on second sealing member, the second sealing member is pressed on the 3rd valve port by voltage stabilizing chamber and pressure port isolation under the elastic force effect of the 4th spring.
Further, proportional control valve also includes: fast arranging device, connects with pressure port, for when the air pressure of pressure port exceedes predetermined threshold value, being released by pressure port place air-flow.
Further, driving device is proportion electro-magnet.
The proportional control valve of application technical solution of the present invention, by arranging the voltage stabilizing chamber in pressure port, the first governor motion being arranged between air inlet and pressure port and the primary air tract between the first governor motion and pressure port that the air inlet being connected with source of the gas is connected with equipment to be controlled in primary air tract, first governor motion thus regulating the air-flow entered in voltage stabilizing chamber, makes the air pressure in voltage stabilizing chamber be maintained within the scope of preset pressure for opening or closing primary air tract according to preset ratio relation.Solve the response lag that existing proportional control valve exists, the technical problem that air pressure adjustment is inaccurate and air pressure is unstable.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of optional proportional control valve according to embodiments of the present invention；
Fig. 2 is the first governor motion structural representation of optional proportional control valve according to embodiments of the present invention；
Fig. 3 is the plan structure schematic diagram of optional proportional control valve according to embodiments of the present invention.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a present invention part, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, all should belong to the scope of protection of the invention.
According to embodiments of the present invention, it is provided that a kind of proportional control valve, as shown in Figure 1, including: primary air tract, the first governor motion 1 and voltage stabilizing chamber 2, primary air tract has air inlet 3 and pressure port 4, and air inlet 3 is connected with source of the gas, and pressure port 4 is connected with equipment to be controlled；First governor motion 1 is arranged in primary air tract and between air inlet 3 and pressure port 4；In the voltage stabilizing chamber 2 primary air tract between the first governor motion 1 and pressure port 4, first governor motion 1 thus regulating the air-flow entered in voltage stabilizing chamber 2, makes the air pressure in voltage stabilizing chamber 2 be maintained within the scope of preset pressure for opening or closing primary air tract according to preset ratio relation.
The proportional control valve of application technical solution of the present invention, by arranging the voltage stabilizing chamber 2 in pressure port 4, the first governor motion 1 being arranged between air inlet 3 and pressure port 4 and the primary air tract between the first governor motion 1 and pressure port 4 that the air inlet 3 being connected with source of the gas is connected with equipment to be controlled in primary air tract, first governor motion 1 thus regulating the air-flow entered in voltage stabilizing chamber 2, makes the air pressure in voltage stabilizing chamber 2 be maintained within the scope of preset pressure for opening or closing primary air tract according to preset ratio relation.Solve the response lag that existing proportional control valve exists, the technical problem that air pressure adjustment is inaccurate and air pressure is unstable.
When being embodied as, as shown in Figure 1, first governor motion 1 includes: spool 11 and driving device 12, spool 11 is axially movably arranged in primary air tract and between air inlet 3 and voltage stabilizing chamber 2 along proportional control valve, being opened by main air flow passage when spool 11 moves to the first predeterminated position makes air inlet 3 connect with voltage stabilizing chamber 2, being closed by main air flow passage when spool 11 moves to the second predeterminated position makes air inlet 3 and voltage stabilizing chamber 2 cut off, thus realizing regulating the air pressure in voltage stabilizing chamber 2；Driving device 12 adoption rate electric magnet, proportion electro-magnet is arranged on the rear end of spool 11, as shown in Figure 2, the top of proportion electro-magnet has the cable interface 5 passing through top for connecting cable interface 5 proportion electro-magnet controlling cable and is connected with control cable, proportion electro-magnet can control the overhang of drive division according to input current size, the drive division of proportion electro-magnet is connected with spool 11, thus driving the mobile throughput regulated in entrance voltage stabilizing chamber 2 in the spool 11 main air flow passage between air inlet 3 and voltage stabilizing chamber 2.
Specifically, as shown in Figure 3, first end of spool 11 has valve core head 111, valve core head 111 connects on fore first spring base 14 by the first spring 13, driving device 12 is connected with the second end of spool 11, there is in main air flow passage between air inlet 3 with voltage stabilizing chamber 2 the first valve port 15 mated with valve core head 111, when driving device 12 does not work, valve core head 111 is pressed on the first valve port 15 and air inlet 3 and voltage stabilizing chamber 2 is cut off under the elastic force of the first spring 14 promotes, so that the air-flow from air inlet cannot be introduced into voltage stabilizing chamber 2；Driving device 12 receive when control signal is started working promote spool 11 the second end and overcome the resistance of the first spring 14 make valve core head 111 separate with the first valve port 15 air inlet 3 is connected with voltage stabilizing chamber 2 so that from air inlet 3 air-flow entrance voltage stabilizing chamber 2 in.
nullIn order to operationally voltage stabilizing chamber 2 and bleeder port 6 be cut off，And when quitting work, voltage stabilizing chamber 2 is connected with bleeder port 6，It is thus possible to make the air pressure in voltage stabilizing chamber 2 release，So that before working next time，For normal atmosphere (An) thus ensureing the accuracy of air pressure adjustment in voltage stabilizing chamber 2，Spool 11 has the flow-guiding channel 112 of connection voltage stabilizing chamber 2 and bleeder port 6，Flow-guiding channel 112 has the first opening of the first end being positioned at spool 11 and the second opening of the second end being positioned at spool 11，First opening is positioned at the front end of spool 11，Second opening is positioned at the rear end of spool 11，Driving device 12 has the drive rod 121 arranged with spool 11 coaxial inner conductor，Drive rod 121 is positioned at the rear end of spool 11 and has at regular intervals with spool 11，The leading section of drive rod 121 has the push rod cup 122 that the second opening with flow-guiding channel 112 mates，Circumferential outer edges along push rod cup 122 is provided with the second spring 16 hindering drive rod 122 to stretch out，The 3rd spring 17 hindering drive rod 122 to stretch out it is provided with in the rear end of drive rod 121，Driving device 12 overcomes the resistance of the second spring 16 and the 3rd spring 17 to make drive rod 121 stretch out towards the second end of spool 11 and withstand on the second end of spool 11 when working，Make push rod cup 122 be pressed on the second opening to be closed by flow-guiding channel 112；When driving device 12 quits work, push rod cup 122 separates to open flow-guiding channel 112 with the second opening of flow-guiding channel 112 under the 16 of the second spring promotes with the 3rd spring 17 elastic force and makes voltage stabilizing chamber 2 connect with bleeder port 6, and then makes the air pressure in voltage stabilizing chamber 2 can be released to normal atmosphere (An).
nullIn order to after the first valve port 15 is opened，Air inlet 3 and bleeder port 6 are cut off，Spool 11 is also socketed with the first sealing member 113，First sealing member 113 is connected with the other end of the second spring 16 by seal joint 114，There is in primary air tract between air inlet 3 with bleeder port 6 the second valve port 18 mated with the first sealing member 113，Air inlet 3 is connected by the second valve port 18 with bleeder port 6，When drive rod 121 is towards the second end motion of spool 11，Push rod cup 122 promotes spool 11 to move forward，The rear end of spool 11 has annular flange flange 115，Annular flange flange 115 can be stuck on seal joint 114 and promote seal joint 114 to move forward make air inlet 3 and bleeder port 6 cut off thus the first sealing member 113 is pressed on the second valve port 18，The air-flow entered by air inlet 3 in the course of the work will not flow out from bleeder port 6.
nullIn order to make the air pressure that entrance voltage stabilizing chamber 2 inward pressure mouth 4 flows to change suddenly，Ensure the stability of air pressure，Main air flow passage between voltage stabilizing chamber 2 and pressure port 4 is additionally provided with the second governor motion 7，Specifically，Second governor motion 7 includes: the second sealing member 71，Primary air tract between voltage stabilizing chamber 2 with pressure port 4 is provided with the 3rd valve port 72 mated with the second sealing member 71，The front end of the second sealing member 71 is connected to the 4th spring 73，The front end of the 4th spring 73 is stuck on the second spring base 74，Second sealing member 71 is pressed on the 3rd valve port 72 under the elastic force effect of the 4th spring 73 and voltage stabilizing chamber 2 and pressure port 4 is isolated，Enter the air-flow in voltage stabilizing chamber 2 to need the air pressure in voltage stabilizing chamber 2 when reaching predetermined threshold value, to back down the second sealing member 71 to flow to pressure port 4 when flowing to pressure port 4，Thus the air pressure ensured in voltage stabilizing chamber 2 remains within the scope of preset pressure.
Suddenly increase to prevent from entering air-flow in main air flow passage, cause the air pressure of pressure port 4 to uprush, and then cause that the air pressure increase flowing to outside equipment to be controlled makes the start action of equipment to be controlled change suddenly, accidents caused.The proportional control valve of the embodiment of the present invention is additionally provided with fast arranging device 8, fast arranging device 8 connects with pressure port 4, fast arranging device 8 has air vent 81, when the air pressure at pressure port 4 place exceedes predetermined threshold value, fast-discharge valve mouth in fast arranging device 8 can be opened, thereby through air vent 81, the high pressure draught at pressure port 4 place is released, and then make the air pressure of pressure port 4 quickly recover to predetermined threshold value.
During specific works, source of the gas is generally air pump, air-flow from air pump, primary air tract is entered by air inlet 3, when driving device 2 does not work, when being namely not received by control signal, the valve core head 111 of spool 11 is pressed on the first valve port 15 under the first spring 13 promotes and is closed by the main air flow passage between air inlet 3 and voltage stabilizing chamber 2, air-flow cannot be introduced into voltage stabilizing chamber 2, and pressure port 4 there will not be corresponding output pressure；When driving device 12 receives control signal, its drive rod 121 overcomes the resistance of the second spring 16 and the 3rd spring 17 to move towards spool 11 under the driving of proportion electro-magnet, first the push rod cup 122 of driving device 12 withstands on and is closed by the flow-guiding channel 112 in spool 11 on the second opening of spool 11 rear end, thus ensureing that the air-flow entered in voltage stabilizing chamber 2 will not be released by bleeder port 6；Drive rod 121 continue motion overcome the first spring 13 resistance promote spool 11 travel forward make valve core head 111 separate with the first valve port 15 air inlet 3 is connected with voltage stabilizing chamber 2 so that from air inlet 3 air-flow entrance voltage stabilizing chamber 2 in, along with the air pressure in voltage stabilizing chamber 2 gradually rises, air pressure in voltage stabilizing chamber 2 can apply reverse active force to valve core head 111 makes spool 11 be moved rearwards by gradually so that the first valve port 15 progressively closes off, when the counter-force that the air pressure in voltage stabilizing chamber 2 produces and the thrust made a concerted effort more than proportion electro-magnet of the elastic force of the first spring 14, valve core head 111 is again pressed on the first valve port 15 and is closed by first valve port 15, enter in voltage stabilizing chamber 2 thus stopping air inlet 3 air-flow.If the control air pressure in voltage stabilizing chamber 2 declines, the power that air pressure produces declines, and valve core head 111 can depart from the first valve port 15 again thus being opened by the first valve port 15, so repeatedly.Air pressure in voltage stabilizing chamber 2 overcomes the resistance of the 4th spring 73 to back down the second sealing member 71 thus being discharged by pressure port 4 and flowing to equipment to be controlled, drives device action to be controlled.
Below it is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a proportional control valve, it is characterised in that including:
Primary air tract, has air inlet and pressure port, and described air inlet is connected with source of the gas, and described pressure port is connected with equipment to be controlled；
First governor motion, is arranged in described primary air tract and between described air inlet and described pressure port；
Voltage stabilizing chamber, in primary air tract between described first governor motion and described pressure port, described first governor motion thus regulating the air-flow entered in described voltage stabilizing chamber, makes the air pressure in described voltage stabilizing chamber be maintained within the scope of preset pressure for opening or closing described primary air tract according to preset ratio relation.
2. proportional control valve according to claim 1, it is characterised in that described first governor motion includes:
Spool, it is movably disposed in described primary air tract and between described air inlet and described voltage stabilizing chamber, when described spool moves to the first predeterminated position, described main air flow passage is opened and make described air inlet and described voltage stabilizing chamber, when described spool moves to the second predeterminated position, described main air flow passage is closed and make described air inlet cut off with described voltage stabilizing chamber；
Driving device, is connected with described spool, is used for driving described spool to move in described main air flow passage.
3. proportional control valve according to claim 2, it is characterised in that
First end of described spool has valve core head, and described valve core head is connected on the first spring base by the first spring, and described driving device is connected with the second end of described spool, has the first valve port mated with described valve core head in described main air flow passage；
Wherein, described valve core head compresses described first valve port under the elastic force of described first spring promotes and is cut off with described voltage stabilizing chamber by described air inlet, promotes the second end of described spool and overcome the resistance of described first spring to make described valve core head separate described air inlet and described voltage stabilizing chamber with described first valve port during the work of described driving device.
null4. proportional control valve according to claim 3，It is characterized in that，Described spool has the flow-guiding channel connecting described voltage stabilizing chamber with bleeder port，Described flow-guiding channel has the first opening of the first end being positioned at described spool and the second opening of the second end being positioned at described spool，Wherein，Described driving device has the drive rod arranged with described spool coaxial inner conductor，The leading section of described drive rod has the push rod cup that the second opening with described flow-guiding channel mates，Described push rod cup is provided with the second spring hindering described drive rod to stretch out，Described drive rod is made to stretch out towards the second end of described spool during the work of described driving device，Being pressed on by described push rod cup on described second opening makes described flow-guiding channel close，When described driving device quits work，Described push rod cup separates with described second opening under the elastic force of described second spring promotes and is opened by described flow-guiding channel.
5. proportional control valve according to claim 4, it is characterized in that, described spool is also socketed with the first sealing member, described first sealing member is connected with described second spring by seal joint, there is in described primary air tract the second valve port mated with described first sealing member, described air inlet is connected by described second valve port with described bleeder port, when described drive rod is towards the second end motion of described spool, described push rod cup promotes described seal joint to be pressed on described second valve port by described first sealing member by described spool will described second valve port closedown.
6. proportional control valve according to claim 4, it is characterised in that described driving device also includes the 3rd spring being connected to described drive rod rearward end and hindering described drive rod to stretch out.
7. proportional control valve according to claim 1, it is characterised in that described proportional control valve also includes:
Second governor motion, is arranged in the main air flow passage between described voltage stabilizing chamber and described pressure port, for regulating the air-flow being flowed to described pressure port by described voltage stabilizing chamber, makes the air pressure in described voltage stabilizing chamber be maintained within the scope of preset pressure.
8. proportional control valve according to claim 7, it is characterised in that described second governor motion includes:
Second sealing member, wherein, there is between described voltage stabilizing chamber and described pressure port the 3rd valve port mated with described second sealing member, being connected to the 4th spring on described second sealing member, described second sealing member is pressed on described 3rd valve port by described voltage stabilizing chamber and the isolation of described pressure port under the elastic force effect of described 4th spring.
9. proportional control valve according to claim 1, it is characterised in that described proportional control valve also includes:
Fast arranging device, connects with described pressure port, for when the air pressure of described pressure port exceedes predetermined threshold value, being released by described pressure port place air-flow.
10. proportional control valve according to claim 2, it is characterised in that described driving device is proportion electro-magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610219435.4A CN105736710A (en) | 2016-04-11 | 2016-04-11 | Proportional control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610219435.4A CN105736710A (en) | 2016-04-11 | 2016-04-11 | Proportional control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105736710A true CN105736710A (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610219435.4A Pending CN105736710A (en) | 2016-04-11 | 2016-04-11 | Proportional control valve |
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| CN (1) | CN105736710A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145623A (en) * | 2019-05-30 | 2019-08-20 | 广东万和热能科技有限公司 | Gas ratio valve |
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| CN201687991U (en) * | 2010-05-25 | 2010-12-29 | 吴金富 | High-frequency proportional solenoid valve |
| CN103047426A (en) * | 2013-01-11 | 2013-04-17 | 浙江大学台州研究院 | Pneumatic proportional pressure valve |
| CN205559804U (en) * | 2016-04-11 | 2016-09-07 | 西安炎煜电子科技有限公司 | Proportional control valve |
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- 2016-04-11 CN CN201610219435.4A patent/CN105736710A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040004201A1 (en) * | 2002-07-05 | 2004-01-08 | Larsen Todd W. | Balanced valve with actuator |
| CN1508461A (en) * | 2002-12-19 | 2004-06-30 | �����Զ�����ʽ���� | Pressure ratio control valve |
| CN201687991U (en) * | 2010-05-25 | 2010-12-29 | 吴金富 | High-frequency proportional solenoid valve |
| CN103047426A (en) * | 2013-01-11 | 2013-04-17 | 浙江大学台州研究院 | Pneumatic proportional pressure valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110145623A (en) * | 2019-05-30 | 2019-08-20 | 广东万和热能科技有限公司 | Gas ratio valve |
| CN110145623B (en) * | 2019-05-30 | 2024-04-09 | 广东万和热能科技有限公司 | Gas Proportional Valve |
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Application publication date: 20160706 |