CN107514465A - Guide electromagnetic valve - Google Patents
Guide electromagnetic valve Download PDFInfo
- Publication number
- CN107514465A CN107514465A CN201610437514.2A CN201610437514A CN107514465A CN 107514465 A CN107514465 A CN 107514465A CN 201610437514 A CN201610437514 A CN 201610437514A CN 107514465 A CN107514465 A CN 107514465A
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- China
- Prior art keywords
- valve
- pilot
- guide
- main
- main valve
- 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.)
- Granted
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000012530 fluid Substances 0.000 description 9
- 210000003660 reticulum Anatomy 0.000 description 8
- 238000013461 design Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000004941 influx Effects 0.000 description 2
- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/40—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
- F16K31/406—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The present invention relates to control valve technical field, specifically discloses a kind of guide electromagnetic valve, including：Valve body of main valve part, pilot valve valve part and pilot valve driving part, the valve body of main valve part include the main valve body provided with main valve chamber, primary valve and main valve plug are provided with the main valve chamber；The pilot valve valve part includes the guide valve blocks for being provided with guide's valve pocket, the pilot valve intracavitary is provided with poppet port, guide's valve pocket connects with the main valve chamber, it is characterized in that, the pilot valve valve part also includes connecting section, the connecting section has pilot passage, the poppet port is connected by the pilot passage with Main valve outlet passage, the main valve plug is to be set in the connecting section and can slide axially to control the opening/closing ring-type valve element of the primary valve, guide electromagnetic valve provided by the invention, the stroke of main valve plug is not restricted by pilot valve stroke, simplify product structure.
Description
Technical field
The present invention relates to control valve technical field, and in particular to a kind of guide electromagnetic valve.
Background technology
The use of guide electromagnetic valve product is generally used for controlling opening for big flow medium than wide
Open or close.Fig. 1 is a kind of structural representation of the guide electromagnetic valve of prior art.
The guide electromagnetic valve includes valve part 100 and pilot valve components 200.Valve part 100
Body on be welded with intake channel 201 and exit passageway 202.Pilot valve components 200 include set
Cylinder 206, the dynamic iron core 204 set in sleeve 206 and static iron core 205, in dynamic iron core 204
Front end be provided with pilot valve 203.Valve part 100 and 200 closed welding of pilot valve components.
Piston element 103 is slidably disposed in valve pocket.
When magnet coil in the power-off state, pilot valve 203 is closed under spring force
The valve port of pilot valve.The high-pressure fluid medium of entrance sleeve 201 is flowed into the pilot valve valve pocket 201 on top
In and keep high pressure, piston element 100 abuts main valve valve port in the presence of fluid pressure differential,
It is closed guide electromagnetic valve；When the magnet coil of guide electromagnetic valve is powered,
Pilot valve 203 overcomes spring force resistance to open the valve port of pilot valve under magnetic field force effect.Lead
High-pressure medium in the valve pocket 201 of valve is flowed out by the valve port of pilot valve, due to the aperture on piston
Circulation area is less than the circulation area of pilot valve valve port, so fluid media (medium) in the valve pocket 201 of pilot valve
Number of dropouts is more than influx, and the pressure of valve pocket 201 is less than the Fluid pressure of entrance sleeve 201,
Piston element 103 opens the valve port of main valve in the presence of fluid pressure differential, makes pilot-operated type electric
Magnet valve is in opening.
But the pilot-operated type flow control valve of above prior art is applying to the larger control of flow
In system processed, it is desirable to which the aperture (A) of valve port becomes big, and the stroke (L) of corresponding pilot valve also will
Ask change big, often because electromagnetic force deficiency can impact to the performance of product, make product
It can decline.In order to solve the above problems, can typically consider to carry out main valve stroke and pilot valve stroke
The mode of separation designs, i.e., is designed, reached by the way of bypass low-pressure channel as shown in Figure 2
To the purpose for reducing pilot valve stroke.But the structure to valve part by being erected, transverse direction
The mode that hole and cylindrical circumferential slot are processed, Product Process it is bad and also design runner
Complexity, product reliability decline.
So how to improve the structure design of guide electromagnetic valve, the reliable operation of product is improved
Property, it is those skilled in the art's problem to be solved.
The content of the invention
In view of the above-mentioned problems, the invention provides a kind of improved guide electromagnetic valve, including：
Valve body of main valve part, the valve body of main valve part include the main valve body provided with main valve chamber, the master
Primary valve and main valve plug are provided with valve pocket, main valve inlet passage connects with the main valve chamber, main
Valve outlet passage connects with the primary valve；Pilot valve valve part, the pilot valve valve part bag
The guide valve blocks provided with guide's valve pocket are included, the pilot valve intracavitary is provided with poppet port, described
Guide's valve pocket connects with the main valve chamber；Pilot valve driving part, the pilot valve driving part include
Pilot valve, the pilot valve extend into the pilot valve intracavitary and control the poppet port
It is opening/closing；Bonnet, the bonnet coordinate with the closed main valve chamber with the main valve body；It is described to lead
Valve body part also includes connecting section, and the connecting section has pilot passage, the guide
Valve port is connected by the pilot passage with the Main valve outlet passage, and the main valve plug is to be arranged
In the connecting section and can slide axially to control the opening/closing ring-type valve element of the primary valve.
Guide electromagnetic valve provided by the invention, connecting section is set on pilot valve valve part,
By the way that the main valve plug of ring-type is set in into connecting section, main valve body and pilot valve valve body are relatively fixed,
And main valve plug relative can slide, so the stroke of main valve plug is not restricted by pilot valve stroke,
When applying in the larger control system of flow, there can be enough opening travels, to use
Less driving force reaches larger stroke, simplifies product structure, saves the energy.
On the basis of above technical scheme, as further technology extend, the main valve plug with
Seal is provided between the connecting section；
Further, it is additionally provided with the main valve plug in the main valve chamber against the primary valve
Spring；
Further, the external diameter (D1) of the connecting section is less than the aperture (D2) of the primary valve；
Further, the connecting section is extended in the primary valve；
Further, the pilot passage include the path section that is connected with the poppet port and with institute
State the big footpath section of Main valve outlet passage connection；
Further, the bonnet is integrally formed with the guide valve blocks；
Further, connecting section is integrally formed with the guide valve blocks；
In the further technical scheme that the present invention provides, pilot valve driving part can be designed
Optimization, make Product processing assembling simply, manufacturability is strong, and performance is guaranteed.
Brief description of the drawings
Fig. 1：A kind of structural representation of the guide electromagnetic valve of prior art；
Fig. 2：Another structural representation of the guide electromagnetic valve of prior art；
Fig. 3 A：A kind of structural representation of guide electromagnetic valve that the present invention provides when closed；
Fig. 3 B：The structural representation of guide electromagnetic valve in the on-state in Fig. 3 A；
Fig. 4：The structural representation of the guide valve blocks of guide electromagnetic valve in Fig. 3 A；
Fig. 5：The structural representation of the ring-type main valve plug of guide electromagnetic valve in Fig. 3 A；
Fig. 6：The structural representation of the main valve body of guide electromagnetic valve in Fig. 3 A；
Fig. 7：The structural representation for another guide electromagnetic valve that the present invention provides；
Fig. 8：The structural representation of the guide valve blocks of guide electromagnetic valve in Fig. 7.
Fig. 3 -- the label declaration in Fig. 8：
1- valve body of main valve parts；
11- main valve chambers, 12- primary valves；
13- main valve plugs, 131- endoporus；
14- main valve inlet passages；
15- Main valve outlet passages；
16- main valve bodies；
17- inlet tubes, 18- outlets；
2- pilot valve valve parts；
21- guide's valve pocket, 22- poppet ports；
23- pilot passages, 24- connecting section；
25/25A- guide valve blocks, 251- base portions；
3- pilot valve driving parts；
31- pilot valves, 32- sleeves；
33- dynamic iron cores, 34- static iron cores；
35- magnet coils；
4/4A- bonnets；
5- seals；
6- springs；
7- sealing gaskets.
Embodiment
In order that those skilled in the art is better understood from technical scheme, tie below
The drawings and specific embodiments are closed to be described in further detail.
Fig. 3 A and Fig. 3 B are a kind of guide electromagnetic valve for providing of the present invention respectively in closing and unlatching
Structural representation, Fig. 4 be Fig. 3 A in guide electromagnetic valve guide valve blocks structural representation,
Fig. 5 is the structural representation of the ring-type main valve plug of guide electromagnetic valve in Fig. 3 A, and Fig. 6 is figure
The structural representation of the main valve body of guide electromagnetic valve in 3A.
As shown in Fig. 3 A, Fig. 3 B, Fig. 4, Fig. 5 and Fig. 6.Guide electromagnetic valve includes main valve
Valve part 1, pilot valve valve part 2 and pilot valve driving part 3.
Valve body of main valve part 1 includes main valve body 16, and main valve chamber 11 is provided with main valve body 16,
Primary valve 12 is formed by processing in the bottom of main valve chamber 11.Main valve inlet passage 14 and main valve
Chamber 11 connects；Main valve outlet passage 15 connects with primary valve 12.Inlet tube 17 is welded on master
The one end of valve intake channel 14；Outlet 18 is welded on the one end of Main valve outlet passage 15.
Pilot valve valve part 2 includes guide valve blocks 25, in the present embodiment guide valve blocks 25
Base portion 251 is generally cylindrical structure, extends outside to form disc-shaped structure from base portion 251
As bonnet 4, extend axially downward to form protrusion tubular structure as connecting tube from base portion 251
Portion 24, connecting section 24 offer through hole as pilot passage 23.
In this embodiment, guide valve blocks 25 and bonnet 4 and connecting section 24 are integrated processing
The structure of shaping.Bonnet 4 coordinates with closed main valve chamber 11 with the installation of main valve body 16, makes simultaneously
Obtain pilot valve valve part 2 to be fixed on valve body of main valve part 1, the outer diameter D 1 of connecting section 24
Less than the aperture D2 of primary valve 12, the connecting section 24 of pilot valve valve part 2 extends downward into
In primary valve 12.
Guide's valve pocket 21 is provided with guide valve blocks 25, guide's valve pocket 21 connects with main valve chamber 11
It is logical.The bottom of guide's valve pocket 21 forms poppet port 22 by processing, and pilot passage 23 includes
The path section connected with poppet port 22 and the big footpath section connected with Main valve outlet passage 15.This
Sample releases the high-pressure fluid in guide's valve pocket 21 more rapid, improved when pilot valve is opened
The unlatching ability of magnetic valve.
Pilot valve driving part 3 includes sleeve 32, and magnet coil 35 is arranged with outside sleeve 32.
Upper end in sleeve 32 is welded with static iron core 34, and dynamic iron core 33 is slidably disposed on
In sleeve 32, the front end of dynamic iron core 33 is provided with pilot valve 31, and pilot valve driving part 3 is logical
Cross sleeve 32 to be welded on guide valve blocks 25, pilot valve 31 is extend into guide's valve pocket 21
Control the opening/closing of the poppet port (22).
Main valve plug 13 as cyclic structure is arranged in main valve chamber 11, its main valve plug 13
Annular groove is offered on the hole wall of endoporus 131, seal 5, main valve are provided with annular groove
Core 13 is set in connecting section 24 by endoporus 131, and is realized by seal 5 in master
Close fit between valve element 13 and connecting section 24.The outside diameter and main valve of main valve plug 13
The inner diameter of chamber 11 is engaged, and main valve plug 13 can be relative to the connecting section of guide valve blocks 25
24 slide axially in main valve chamber 11, with the unlatching of control bound mouth 12 and closure.
Main valve chamber 11 is additionally provided with spring 6, and spring 6 is with the base portion 251 of guide valve blocks 25
Spring base is by main valve plug 13 against primary valve 12.
When magnet coil 35 is in the power-off state (shown in Fig. 3 A), dynamic iron core 33 is in spring force
In the presence of, drive pilot valve 31 to move down and close poppet port 22.Main valve inlet leads to
The high-pressure fluid medium in road 14 is flowed into guide's valve pocket 21 and main valve chamber 11 on top, and is protected
Hold high pressure.Main valve plug 13 abuts master in the presence of the active force of spring 6 and hydraulic pressure
Valve port 12, is closed guide electromagnetic valve；When magnet coil 35 is powered, move
Iron core 33 overcomes spring force resistance under magnetic field force effect, drives pilot valve 31 to move up
Open poppet port 22.High-pressure medium in guide's valve pocket 21 and main valve chamber 11 passes through pilot valve
Mouth 22 flows out, and fluid media (medium) number of dropouts is more than influx in main valve chamber 11, in hydraulic pressure
In the presence of, main valve plug 13 overcomes the active force upward sliding of spring 6 to open primary valve 12,
Guide electromagnetic valve is set to be in opening.
Because main valve plug 13 is set in connecting section 24, so having very in sliding process
Good guidance quality, it is not easy to block, and also main valve plug 13 is annular design, relative to overall circle
Disk shape, sliding it, required driving force is smaller, and the flexibility ratio of control valve has changed
Kind, the guide electromagnetic valve applies in large flow fluid control system, has good improvement
Effect.
Fig. 7 is the structural representation for another guide electromagnetic valve that the present invention provides, and Fig. 8 is
The structural representation of the guide valve blocks of guide electromagnetic valve in Fig. 7.
As shown in Figure 7 and Figure 8.The difference of the technical scheme and aforementioned schemes is, leads
Valve body part 2 includes guide valve blocks 25A, from guide valve blocks 25A base portion 251 axially to
Lower extension forms protrusion tubular structure and offers insertion as connecting section 24, connecting section 24
Hole is as pilot passage 23.Bonnet 4A is to lead to again with guide valve blocks 25A after discoid part is processed
Cross weld it is welded together.
Described above is only the preferred embodiment of the present invention, it is noted that is led for this technology
For the those of ordinary skill in domain, under the premise without departing from the principles of the invention, it can also make
Some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of guide electromagnetic valve, including：
Valve body of main valve part (1), the valve body of main valve part (1) are included provided with main valve chamber (11)
Main valve body (16), the main valve chamber (11) is interior to be provided with primary valve (12) and main valve plug (13), main
Valve intake channel (14) connects with the main valve chamber (11), Main valve outlet passage (15) and the master
Valve port (12) connects；
Pilot valve valve part (2), the pilot valve valve part (2) include being provided with guide's valve pocket (21)
Guide valve blocks (25), is provided with poppet port (22), the elder generation in guide's valve pocket (21)
Pilot valve chamber (21) connects with the main valve chamber (11)；
Pilot valve driving part (3), the pilot valve driving part (3) include pilot valve (31), institute
State pilot valve (31) and extend into the control poppet port (22) in guide's valve pocket (21)
It is opening/closing；
Bonnet (4), the bonnet (4) coordinate with the closed main valve chamber with the main valve body (16)
(11)；
Characterized in that, the pilot valve valve part (2) also includes connecting section (24), it is described
Connecting section (24) has pilot passage (23), and the poppet port (22) is led to by the pilot valve
Road (23) connects with the Main valve outlet passage (15), and the main valve plug (13) is described to be set in
Connecting section (24) can simultaneously slide axially to control the opening/closing ring-type valve element of the primary valve (12).
2. guide electromagnetic valve as claimed in claim 1, it is characterised in that the main valve
Seal (5) is provided between core (13) and the connecting section (24).
3. guide electromagnetic valve as claimed in claim 1, it is characterised in that the main valve
The spring (6) against the primary valve (12) by the main valve plug (13) is additionally provided with chamber (11).
4. guide electromagnetic valve as claimed in claim 1, it is characterised in that the connection
The external diameter (D1) of pipe portion (24) is less than the aperture (D2) of the primary valve (12).
5. guide electromagnetic valve as claimed in claim 4, it is characterised in that the connection
Pipe portion (24) is extended in the primary valve (12).
6. guide electromagnetic valve as claimed in claim 4, it is characterised in that the pilot valve
Passage (23) includes the path section connected with the poppet port (22) and led to the Main valve outlet
The big footpath section of road (15) connection.
7. the guide electromagnetic valve as described in claim any one of 1-6, it is characterised in that
The bonnet (4) is integrally formed with the guide valve blocks (25).
8. the guide electromagnetic valve as described in claim any one of 1-6, it is characterised in that
Connecting section (24) is integrally formed with the guide valve blocks (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610437514.2A CN107514465B (en) | 2016-06-17 | 2016-06-17 | Guide electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610437514.2A CN107514465B (en) | 2016-06-17 | 2016-06-17 | Guide electromagnetic valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107514465A true CN107514465A (en) | 2017-12-26 |
| CN107514465B CN107514465B (en) | 2019-05-28 |
Family
ID=60720878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610437514.2A Active CN107514465B (en) | 2016-06-17 | 2016-06-17 | Guide electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107514465B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576052A (en) * | 2017-09-25 | 2018-01-12 | 江阴市南丰科技有限公司 | A kind of firing equipment for Chemical Manufacture |
| CN108488473A (en) * | 2018-03-16 | 2018-09-04 | 武汉理工大学 | Pilot-operated type piezo electric valve |
| CN110792786A (en) * | 2018-08-01 | 2020-02-14 | 盾安环境技术有限公司 | Electromagnetic valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4179096A (en) * | 1978-04-03 | 1979-12-18 | Automatic Switch Company | Valve member for pilot operated valves |
| GB2059019B (en) * | 1979-09-20 | 1984-05-02 | Rilco Maschf | Valve |
| CN201116606Y (en) * | 2007-11-15 | 2008-09-17 | 上海欧凯电磁阀制造有限公司 | Solenoid valve |
| CN201116609Y (en) * | 2007-10-24 | 2008-09-17 | 河南海力特机电制造有限公司 | High-pressure water-base solenoid valve |
| CN204961974U (en) * | 2015-09-16 | 2016-01-13 | 浙江三花制冷集团有限公司 | Pilot -operated electromagnetic valve |
-
2016
- 2016-06-17 CN CN201610437514.2A patent/CN107514465B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4179096A (en) * | 1978-04-03 | 1979-12-18 | Automatic Switch Company | Valve member for pilot operated valves |
| GB2059019B (en) * | 1979-09-20 | 1984-05-02 | Rilco Maschf | Valve |
| CN201116609Y (en) * | 2007-10-24 | 2008-09-17 | 河南海力特机电制造有限公司 | High-pressure water-base solenoid valve |
| CN201116606Y (en) * | 2007-11-15 | 2008-09-17 | 上海欧凯电磁阀制造有限公司 | Solenoid valve |
| CN204961974U (en) * | 2015-09-16 | 2016-01-13 | 浙江三花制冷集团有限公司 | Pilot -operated electromagnetic valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576052A (en) * | 2017-09-25 | 2018-01-12 | 江阴市南丰科技有限公司 | A kind of firing equipment for Chemical Manufacture |
| CN108488473A (en) * | 2018-03-16 | 2018-09-04 | 武汉理工大学 | Pilot-operated type piezo electric valve |
| CN108488473B (en) * | 2018-03-16 | 2023-12-15 | 武汉理工大学 | Pilot-operated piezoelectric valve |
| CN110792786A (en) * | 2018-08-01 | 2020-02-14 | 盾安环境技术有限公司 | Electromagnetic valve |
| CN110792786B (en) * | 2018-08-01 | 2021-09-28 | 盾安环境技术有限公司 | Electromagnetic valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107514465B (en) | 2019-05-28 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20220819 Address after: 312500 Daming new area, Zhejiang Xinchang Economic Development Zone, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Sanhua Commercial Refrigeration Co.,Ltd. Address before: 312500 R & D building of Zhejiang Sanhua refrigeration group, xialiquan village, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG SANHUA CLIMATE AND APPLIANCE CONTROLS GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right |