CN108167506B - High-speed electromagnetic valve - Google Patents
High-speed electromagnetic valve Download PDFInfo
- Publication number
- CN108167506B CN108167506B CN201810186230.XA CN201810186230A CN108167506B CN 108167506 B CN108167506 B CN 108167506B CN 201810186230 A CN201810186230 A CN 201810186230A CN 108167506 B CN108167506 B CN 108167506B
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- valve
- valve core
- valve body
- sealing
- cavity
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- 238000007789 sealing Methods 0.000 claims abstract description 59
- 239000012530 fluid Substances 0.000 claims abstract description 50
- 230000005389 magnetism Effects 0.000 claims description 12
- 230000003068 static effect Effects 0.000 claims description 11
- 230000009471 action Effects 0.000 description 8
- 239000003921 oil Substances 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
-
- 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
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a high-speed electromagnetic valve, which comprises a valve core, wherein the tail part of the valve core is propped against a return spring through a spring seat, the spring seat is provided with an orifice, the orifice divides a low-pressure cavity into a front cavity and a rear cavity, fluid acts on the valve core from front to back through the front cavity, and the fluid acts on the valve core from back to front through the rear cavity, a magnetic gap and an annular overflow gap. The valve core sealing conical surface and the valve seat sealing conical surface form a sealing belt when the cone angles are different and the cone angles are in contact, and the sealing belt enables the areas of fluid pressure received by the front end and the rear end of the valve core to be completely equal, so that the opening force of the valve core is not influenced by the fluid pressure.
Description
Technical Field
The invention relates to the technical field of electromagnetic valves, in particular to an electromagnetic valve capable of responding at high speed.
Background
For high speed solenoid valves, the imbalance force created by the fluid pressure increases with the size of the spool and can severely affect the spool movement. The spool diameter of the known high-speed solenoid valve must therefore not be too large, i.e. the flow is small.
In order to improve the response speed of a valve under the condition of large flow, chinese patent No. 103256267A discloses a hydraulic high-speed digital valve, which comprises a valve body and a valve core slidably arranged in the valve body, wherein one end of the valve core is provided with a sealing surface and is matched with the sealing surface in the valve body to form a sealing interface, an oil inlet channel and an oil outlet are respectively arranged on two sides of the sealing interface, the oil inlet channel is positioned between the valve body and the valve core and surrounds the valve core, so that the resultant force of the hydraulic oil inlet on the valve core is zero under the closed state of the digital valve, and the oil outlet is positioned at one end of the valve body. The pressure of the oil outlet is transmitted to the pressure balance cavity through the channel, and the resultant force of the axial force applied to the valve core is zero. Therefore, the design of the valve core size is not limited by hydraulic pressure any more, a large-flow digital valve can be realized, and quick response is realized under the action of electromagnetic force and spring force.
The digital valve still has the following to be improved that 1) the electromagnet and the electromagnetic coil are positioned at the tail end of the valve body, the electromagnetic efficiency is low, 2) the valve body is in surface contact with the valve core, the processing difficulty is high, the problem of loose closing is easy to occur along with uneven abrasion of a contact surface, the area of hydraulic oil in an oil outlet acts on the closing direction of the valve core in a valve closing state is larger than the area of the valve opening direction, the resultant force of the hydraulic oil on the valve core in the moving direction is not zero, the force for closing the valve core is generated, the movement of the valve core is limited, even the valve core cannot be opened, and therefore the structure can only be used in hydraulic control with low outlet pressure and is limited in use.
In the Chinese patent CN104315159A and a hydraulic high-speed digital valve in an electromagnetic valve, the technical problems are solved to a certain extent, the hydraulic high-speed digital valve comprises a valve body and a valve core which is slidably arranged in the valve body, a cylindrical movable armature is sleeved at the rear end of the valve core, a fixed armature is arranged in the valve body behind the movable armature, the valve body comprises a front valve body, a rear valve body and a spacer arranged between the front valve body and the rear valve body, the front valve body and the rear valve body are made of magnetic materials, the spacer is made of magnetic materials, the joint surface of the fixed armature and the movable armature is positioned in the coverage area of the spacer, and an annular coil assembly is sleeved outside the valve body. The electromagnetic coil is positioned at the middle section of the valve body, the whole structure is more compact, the position of the fixed armature can be conveniently adjusted, so that the clearance between the fixed armature and the movable armature can be finely adjusted, and the conical surface with unequal inclination angles at the joint of the valve core and the valve body ensures the stress balance of the valve core, improves the sealing effect and can avoid leakage caused by uneven abrasion of the sealing surface.
Chinese patent No. CN104913099a also discloses a similar structure.
However, as the practice proceeds deeply, there have been found problems of 1) a clearance fit between the valve element guide surface and the valve sleeve, through which clearance fluid can be discharged, 2) the response speed of the valve element, and also the room for improvement.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a high-speed electromagnetic valve so as to improve the corresponding speed of a valve core.
In order to solve the technical problems, the high-speed electromagnetic valve comprises a valve body, a valve rod and a valve rod, wherein the valve body comprises a front valve body and a rear valve body, the rear valve body is connected with a rear valve body end cover, and the rear valve body end cover is fixedly connected with the front valve body; the front valve body is provided with a fluid inlet and a fluid outlet, and a valve seat part and a valve core mounting hole are arranged in the front valve body; the valve comprises a valve core, a movable armature, a static armature and a magnetic coil, wherein the head of the valve core is provided with a valve core sealing conical surface, the valve seat part is provided with a valve seat sealing conical surface, the valve core sealing conical surface is different from the cone angle of the valve seat sealing conical surface, a sealing strip is formed when the valve core sealing conical surface is abutted against the valve seat sealing conical surface, the valve core is provided with an axial through hole, the axial through hole is communicated with the fluid outlet, the sealing strip divides the valve body into a high-pressure area communicated with the fluid inlet and a low-pressure cavity communicated with the fluid outlet, the movable armature is fixed at the tail part of the valve core, the static armature is fixed at the inner hole of the static armature, a spring sleeve is sleeved in the inner hole of the static armature, a return spring is arranged in the spring sleeve, an end cover of the back valve body and the magnetic ring are surrounded on the periphery of the magnetic coil, the movable armature stretches into the inner hole of the magnetic ring through the central hole of the back end cover, the static armature stretches into the inner hole of the magnetic ring from the other end cover, the movable armature stretches into the inner hole of the magnetic ring through the back valve seat, the back valve seat is provided with a gap, the gap is reserved between the movable valve body and the back valve seat, the movable valve seat is opposite to the inner hole, the orifice divides the low pressure chamber into a front chamber and a rear chamber, the fluid applies pressure from front to back to the valve spool through the front chamber, and the fluid applies pressure from back to front to the valve spool through the rear chamber, the magnetic gap, and the annular flow gap.
Preferably, a shaft sealing device is arranged between the guide surface of the valve core and the valve body.
Preferably, the shaft sealing means is a sealing ring.
After the technical scheme is adopted, the valve core has the technical effects that the head part of the valve core is provided with the valve core sealing conical surface, the valve seat part is provided with the valve seat sealing conical surface, the valve core sealing conical surface is different from the cone angle of the valve seat sealing conical surface, and a sealing belt is formed when the valve core sealing conical surface and the valve seat sealing conical surface are in contact with each other, and the sealing belt enables the areas of fluid pressure received by the front end and the rear end of the valve core to be completely equal, so that the opening force of the valve core is not influenced by the magnitude of the fluid pressure.
In addition, a shaft sealing device is arranged between the guide surface of the valve core and the valve body, so that fluid leakage is avoided between the guide surface of the valve core and the valve body.
Drawings
FIG. 1 is a sectional view showing the structure of a high-speed solenoid valve according to embodiment 1 of the invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at II;
FIG. 3 is an enlarged view of a portion of FIG. 1 at I;
FIG. 4 is a structural cross-sectional view of embodiment 2 of the high-speed solenoid valve of the invention;
FIG. 5 is an enlarged view of a portion of III from FIG. 4;
In the figure, a front valve body, a 2-valve core, a 3-rear valve body end cover, a 4-rear valve body, a 5-electromagnetic coil, a 6-magnetism isolating ring, a 7-static armature, an 8-spring sleeve, a 9-return spring, a 10-spring seat, a 101-orifice, a 11-movable armature, a 12-fluid outlet, a 13-fluid inlet, a 14-sealing ring, a 1 a-valve seat sealing conical surface, a 2 a-valve core sealing conical surface, a 1B-valve seat sealing conical surface, a 2B-valve core sealing conical surface, a t-magnetic gap, an A-front cavity and a B-rear cavity are arranged.
Detailed Description
The invention will be further described with reference to the drawings and examples.
For convenience of description, the side on which the electromagnetic coil is disposed is defined as "rear", and the opposite side is defined as "front".
Example 1
As shown in fig. 1, a valve body of a digital valve comprises a front valve body 1 and a rear valve body 4, wherein the rear valve body 4 is connected with a rear valve body end cover 3, and the rear valve body end cover 3 is fixedly connected with the front valve body 1.
The front valve body 1 is provided with a fluid inlet 13 and a fluid outlet 12, the fluid outlet 12 is positioned at the end part of the front valve body 1, and the fluid inlet 13 is positioned on the peripheral wall of the front valve body 1.
A valve seat part and a valve core mounting hole are arranged in the front valve body 1. The valve core 2 is in sliding fit with the valve core mounting hole, a sealing ring 14 is arranged between the guide surface of the valve core 2 and the valve body 1, the sealing ring 14 is a shaft sealing device, and fluid leakage is avoided between the guide surface of the valve core and the valve body.
As shown in fig. 3, the head portion of the valve element 2 is provided with a valve element sealing tapered surface 2a, the valve seat portion is provided with a valve seat sealing tapered surface 1a, and the valve element sealing tapered surface 2a and the valve seat sealing tapered surface 1a have different taper angles and form a sealing band when they are abutted against each other. The valve core 2 is provided with an axial through hole which is communicated with the fluid outlet 12, and the sealing belt divides the valve body into a high-pressure area communicated with the fluid inlet 13 and a low-pressure cavity communicated with the fluid outlet 12. The sealing belt has the function of making the areas of the fluid pressure on the front end and the rear end of the valve core 2 completely equal, so that the opening force of the valve core 2 is not influenced by the magnitude of the controlled fluid pressure.
As shown in fig. 1 and fig. 2 together, the movable armature 11 is fixed at the tail of the valve core 2, the static armature 7 is fixed at the rear valve body 4, a spring sleeve 8 is sleeved in an inner hole of the static armature 7, a return spring 9 is arranged in the spring sleeve 8, a magnetism isolating ring 6 is arranged in an inner hole of the electromagnetic coil 5, the magnetism isolating ring 6 is made of magnetism isolating metal materials, and the rear valve body 4, the rear valve body end cover 3 and the magnetism isolating ring 6 are surrounded on the periphery of the electromagnetic coil 5.
The movable armature 11 extends into the inner hole of the magnetism isolating ring 6 through the central hole of the end cover 3 of the rear valve body, the static armature 7 extends into the inner hole of the magnetism isolating ring 6 from the other end, two end faces are opposite, a magnetic gap t is reserved in the middle, one of the magnetic gaps t is used for providing a stroke space for the valve core 2, and the other is used for a fluid passage, and the function is also mentioned in the following description.
The tail of the valve core 2 is propped against the return spring 9 through the spring seat 10, the spring seat 10 is provided with an orifice 101, the orifice 101 divides the low-pressure cavity into a front cavity A and a rear cavity B, the orifice 101 is different from a general through hole, the throttle is used for throttling flowing fluid, and the fluid pressure of the front cavity A and the rear cavity B is different at the moment of opening and closing the valve, so that pressure difference is generated on the valve core, and the opening and closing of the valve are quickened. The movable armature 11 and the inner hole of the rear valve body end cover 3 are provided with annular overflow gaps with the inner hole of the magnetism isolating ring 6. The fluid acts on the valve core 2 from front to back through the front cavity a, and the fluid acts on the valve core 2 from back to front through the rear cavity B, the magnetic gap t and the annular overflow gap.
For convenience of explanation of the working principle of the present invention, the fluid pressure of the front chamber is PA, the fluid pressure of the rear chamber B is PB, and the fluid pressure of the high-pressure region is P1.
In the valve power-off state, the valve core 2 is in a closed state under the action of the force of the return spring 9, and at the moment, pa=pb, P1> PA, and P1> PB, the areas of the fluid pressures received by the front end and the rear end of the valve core 2 are completely equal, and the resultant force of the fluid pressures received by the valve core is 0.
The valve is electrified, under the action of electromagnetic force, the valve core 2 moves backwards, at the moment when the valve core 2 is opened, fluid is sprayed from a high-pressure area to a front cavity A of a low-pressure cavity, the pressure of PA rises, the pressure PB of a rear cavity B is not greatly changed due to the action of an orifice 101, the pressure of the front end fluid borne by the valve core 2 is larger than the pressure of the rear end fluid borne by the valve core 2, and under the combined action of the fluid pressure and electromagnetic force, the valve core 2 is pushed to move backwards quickly, so that the opening speed is greatly increased. After the valve is fully opened, fluid pressure is conducted from the front chamber a to the rear chamber B through the orifice 101, at which point pa=pb.
When the valve is powered off, under the action of spring force, the valve core 2 starts to move towards the front end direction, the pressure PA of the front cavity A starts to drop at the moment of movement, the pressure PB of the rear cavity B does not change greatly due to the action of the throttle hole 101, at the moment, the pressure of rear-end fluid borne by the valve core 2 is larger than that of the front end, and the valve core is quickly closed under the combined action of fluid pressure and spring force. After the valve is fully closed, the front and rear chambers a and B are pressure balanced, pa=pb.
Example 2
As shown in fig. 4, this embodiment is basically the same as embodiment 1 except for the sealing structure of the valve body and the valve seat. In the present embodiment, as shown in fig. 5, the corner of the valve seat sealing cone 1a abuts against the valve element sealing cone 2a, whereas in fig. 3, the corner of the valve element sealing cone 2a abuts against the valve seat sealing cone 1a. The structure of this embodiment is generally designed as a normally open valve, and the structure of embodiment 2 is generally designed as a normally closed valve.
The present invention is not limited to the above embodiments, and all modifications based on the concept, principle, structure and method of the present invention are included in the scope of the present invention.
Claims (2)
1. A high speed solenoid valve comprising:
The valve body comprises a front valve body and a rear valve body, wherein the rear valve body is connected with a rear valve body end cover which is fixedly connected with the front valve body;
the valve core is in sliding fit with the valve core mounting hole, a valve core sealing conical surface is arranged at the head part of the valve core, a valve seat sealing conical surface is arranged at the valve seat part, the valve core sealing conical surface and the valve seat sealing conical surface are different in cone angle and form a sealing belt when the valve core sealing conical surface and the valve seat sealing conical surface are in contact with each other, an axial through hole is formed in the valve core, the axial through hole is communicated with the fluid outlet, and the sealing belt divides the valve body into a high-pressure area communicated with the fluid inlet and a low-pressure cavity communicated with the fluid outlet;
The movable armature is fixed at the tail part of the valve core, the static armature is fixed in the rear valve body, a spring sleeve is sleeved in an inner hole of the static armature, a return spring is arranged in the spring sleeve, a magnetism isolating ring is arranged in the inner hole of the electromagnetic coil, the rear valve body, a rear valve body end cover and the magnetism isolating ring are enclosed around the electromagnetic coil, the movable armature stretches into the inner hole of the magnetism isolating ring through a central hole of the rear valve body end cover, the static armature stretches into the inner hole of the magnetism isolating ring from the other end, two end faces are opposite, a magnetic gap is reserved in the middle, annular overcurrent gaps are reserved between the movable armature and the inner hole of the rear valve body end cover and between the movable armature and the magnetism isolating ring inner hole,
The tail of the valve core is propped against the return spring through a spring seat, the spring seat is provided with an outer spherical surface and is provided with an orifice along the axial direction, the axial through hole forms an inner taper hole at the tail of the valve core, the inner taper hole is matched with the outer spherical surface, the orifice divides the low-pressure cavity into a front cavity and a rear cavity, the fluid acts on the valve core from front to back through the front cavity, and the fluid acts on the valve core from back to front through the rear cavity, the magnetic gap and the annular overflow gap;
and a shaft sealing device is arranged between the guide surface of the valve core and the valve body.
2. The high speed solenoid valve of claim 1 wherein said shaft seal is a seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810186230.XA CN108167506B (en) | 2018-03-07 | 2018-03-07 | High-speed electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810186230.XA CN108167506B (en) | 2018-03-07 | 2018-03-07 | High-speed electromagnetic valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108167506A CN108167506A (en) | 2018-06-15 |
| CN108167506B true CN108167506B (en) | 2024-12-17 |
Family
ID=62511892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810186230.XA Active CN108167506B (en) | 2018-03-07 | 2018-03-07 | High-speed electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167506B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542969B (en) * | 2020-11-26 | 2024-08-13 | 未势能源科技有限公司 | Solenoid valve of high-pressure bottle valve and high-pressure bottle valve |
| CN114962505B (en) * | 2022-05-12 | 2023-03-31 | 燕山大学 | High-speed switch electromagnetic valve |
| CN115405710B (en) * | 2022-09-01 | 2023-06-09 | 唐山传奇科技有限公司 | Self-closing high-speed relief valve |
| CN115607796B (en) * | 2022-09-22 | 2024-04-26 | 哈尔滨工业大学 | A low-noise solenoid valve for a ventilator with high control accuracy and high sensitivity and a ventilator |
| CN115854099B (en) * | 2022-11-29 | 2025-06-17 | 上海宇航系统工程研究所 | A medium-isolated permanent magnet self-locking solenoid valve for spacecraft |
| CN120062370A (en) * | 2025-04-28 | 2025-05-30 | 富临精工股份有限公司 | Solenoid valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204127361U (en) * | 2014-10-15 | 2015-01-28 | 潍坊力创电子科技有限公司 | Hydraulic pressure large discharge high-speed figure valve open in usual |
| CN104913099A (en) * | 2014-10-15 | 2015-09-16 | 潍坊力创电子科技有限公司 | Conical sealing type hydraulic large-flow high-speed digital valve |
| CN207921445U (en) * | 2018-03-07 | 2018-09-28 | 潍坊力创电子科技有限公司 | High-speed electromagnetic valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201330613Y (en) * | 2008-12-18 | 2009-10-21 | 四川神坤装备股份有限公司 | High-pressure large-flow-rate safety valve |
| CN101625043B (en) * | 2009-08-13 | 2011-12-21 | 凯迈（洛阳）气源有限公司 | high-pressure reducing valve |
| CN103727079A (en) * | 2012-10-15 | 2014-04-16 | 北京精密机电控制设备研究所 | High-pressure small-drift-diameter high-precision slide-valve-type safety and overflow valve |
| CN105972230B (en) * | 2016-07-01 | 2018-02-23 | 潍坊力创电子科技有限公司 | The gas spray valve with buffer gear of electromagnetic drive |
| CN106090398B (en) * | 2016-08-30 | 2018-10-09 | 常德翔宇设备制造有限公司 | Direct-acting high-pressure electromagnetic valve with large drift diameter |
-
2018
- 2018-03-07 CN CN201810186230.XA patent/CN108167506B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204127361U (en) * | 2014-10-15 | 2015-01-28 | 潍坊力创电子科技有限公司 | Hydraulic pressure large discharge high-speed figure valve open in usual |
| CN104913099A (en) * | 2014-10-15 | 2015-09-16 | 潍坊力创电子科技有限公司 | Conical sealing type hydraulic large-flow high-speed digital valve |
| CN207921445U (en) * | 2018-03-07 | 2018-09-28 | 潍坊力创电子科技有限公司 | High-speed electromagnetic valve |
Also Published As
| Publication number | Publication date |
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| CN108167506A (en) | 2018-06-15 |
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