CN207161567U - A kind of electric-controlled silicon oil clutch - Google Patents

A kind of electric-controlled silicon oil clutch Download PDF

Info

Publication number
CN207161567U
CN207161567U CN201721018138.XU CN201721018138U CN207161567U CN 207161567 U CN207161567 U CN 207161567U CN 201721018138 U CN201721018138 U CN 201721018138U CN 207161567 U CN207161567 U CN 207161567U
Authority
CN
China
Prior art keywords
spring
valve block
active plate
electric
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.)
Expired - Fee Related
Application number
CN201721018138.XU
Other languages
Chinese (zh)
Inventor
段耀龙
张文辉
丁鹤剑
石芦月
张军杰
李军辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xuelong Group Co Ltd
Original Assignee
Xuelong Group Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xuelong Group Co Ltd filed Critical Xuelong Group Co Ltd
Priority to CN201721018138.XU priority Critical patent/CN207161567U/en
Application granted granted Critical
Publication of CN207161567U publication Critical patent/CN207161567U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Electrically Driven Valve-Operating Means (AREA)

Abstract

A kind of electric-controlled silicon oil clutch, the follower plate and the oil piping system between active plate and follower plate coordinated including main shaft, active plate, valve block mechanism, electromagnet mechanism, control system and active plate, active plate is connected with main shaft, and valve block mechanism is located on active plate;Oil piping system includes the power cavity and oil outlet, the spill port of connection shoe cream room and power cavity of the shoe cream room of storage silicone oil, clutch active plate and follower plate;Control system controls valve block mechanism to swing up and down by controlling electromagnet mechanism, to control the opening and closing of oil outlet;Valve block mechanism includes spring, valve block and armature;Valve block includes valve body and valve head;Spring is arranged between valve block and main shaft, for driving the reset of valve head.Its advantage is:The precompressed angle elastic reset of valve block empennage is replaced by using spring reset, eliminate because of use and caused by the valve block Flexible change failure mode that makes valve be not closed completely, do not open, improve service life, the safety and reliability of valve block.

Description

A kind of electric-controlled silicon oil clutch
Technical field
It the utility model is related to a kind of electric-controlled silicon oil clutch.
Background technology
Save the long-range policy that the energy is national economic development.Shown according to relevant information, the energy of automobile 5~10% Amount consumption is on the fan running of engine, and in the actual moving process of automobile engine, typically only need fan 5~ Operating can is kept to meet that cooling requires in 10% time, so in the prior art, a kind of silicon oil filled fan clutch be present, Using the engine blower of the clutch, fan can be caused just to be started working when engine needs cooling, engine is not required to Fan does not work when cooling down.
Chinese Patent Application No. 201420370260.3 discloses a kind of valve block controlling organization of electric-controlled silicon oil clutch, bag Active mandrel in electric-control silicone oil fan clutch, magnet coil, electrical control circuit, the electromagnetic control system of driving disc spacing pressing composition are included, it is special Putting is:Rotary magnet is provided with the correspondence position of active mandrel, driving disc spacing pressing, it is fuel-displaced on the valve block and driving disc spacing pressing on rotary magnet Hole contact connection, and the back-moving spring and reset ball being arranged between active mandrel and driving disc spacing pressing.
The operation principle of the electric-controlled silicon oil clutch is:After electrical control circuit control magnet coil is powered, in driving disc spacing pressing End produces N poles and the magnetic pole of S poles 2, and the armature in rotary magnet makees spiral shell under magneticaction along inner spiral groove and external spiral groove Rotation is moved, while rotates 10 degree or so of angle in tangential direction with the valve block on moving armature, and oil outlet is opened;When automatically controlled electricity After road control magnet coil power-off, in the presence of back-moving spring and reset ball, the motion of armature reverse acting spiral is anti-with moving valve plate To tangentially turning an angle, oil outlet is closed.
However, although above-mentioned electric-controlled silicon oil clutch, which can be realized, to be opened and closed the function of oil outlet, said structure is deposited In following defect:1. the setting of rotary magnet makes the structure of the electric-controlled silicon oil clutch very complicated in the patent.2. the patent is sharp Rotated in tangential direction with the valve block on moving armature to realize difficult to realize pair of the technological means of oil outlet opening and closing with rotary magnet The angle of valve block rotation is precisely controlled, such as:Only valve block could open spill port completely after deflecting certain angle, and this will The silicone oil in shoe cream room is caused to be flowed out in time from spill port.3. the valve block of the patent is arranged on armature, armature is set On rotary magnet, spring is arranged on the lower section of rotary magnet, and when needing to close oil outlet, back-moving spring needs to reset simultaneously Rotary magnet, armature and valve block reset could be by fuel-displaced bore closure, and this set inevitably results in the failure of spring and resetted not The problem of timely, -- because the structure being pressed on spring is too many, by making, the compressive load that spring is born is very big.4. the patent is resetting Set on spring and reset ball, can play really will improve the effect of the sensitivity of response, exactly because but the spring ball In the presence of the degree of accuracy for the closing for causing oil outlet being substantially reduced, reason is, is connect between spring ball and rotary magnet for point Touch, and it is well known that engineering goods can all produce vibration in motion process, this vibration will cause spring ball to exist Rolling on rotary magnet, this will substantially reduce the degree of accuracy of oil outlet opening and closing.5. the patent is only by using the reset of spring Realize that the closing type of drive of oil outlet is very unreliable come the rotation with moving valve plate mechanism-valve block, armature and rotary magnet, one Denier spring failure -- spring has elastic fatigue under long-term work, and the electric-controlled silicon oil clutch will be unable to oil return bore closure, So as to cause still have the problem of silicone oil outflow in cold turner condition, so as to cause the waste of the energy.
In order to overcome above mentioned problem, the utility model patent that Chinese Patent Application No. is 201020505938.6 discloses one Valve block mechanism kind for silicon oil filled fan clutch, including main shaft, the protecgulum that is fixedly connected and bonnet, it is arranged at protecgulum and bonnet Between and the active plate that is fixed on main shaft, and the oil piping system being arranged between protecgulum, bonnet and active plate;The oil circuit System is stored up including the shoe cream room for storing silicone oil, the power cavity for clutch protecgulum, bonnet and active plate and for connecting The oil outlet and oil return valve opening of oil pocket and power cavity;Also include valve block mechanism, electromagnet mechanism and control system, the valve block machine The oil outlet of structure one end and oil piping system coordinates, and the valve block mechanism other end coordinates with electromagnet mechanism;The control system For controlling the electric current of electromagnet in electromagnet mechanism, and then by controlling valve block mechanism to be controlled oil outlet.
The operation principle of the silicon oil filled fan clutch:When control system powers off electromagnet mechanism, electromagnet is without magnetic field Producing, i.e., electromagnet mechanism does not produce magnetic force to armature, and at this moment valve block is in released state with oil outlet, i.e. oil outlet is opened, At this moment the silicone oil in shoe cream room is flowed into power cavity, therefore rotation speed of the fan will be converted from low speed to fast state.Work as control system After being powered to electromagnet mechanism, electromagnetic force caused by electromagnet drives valve block mechanism using the positive stop lug boss edge of active plate as fulcrum It is rotated in a clockwise direction so that the other end of valve block closes oil outlet and blocked the silicone oil in shoe cream room to be flowed into power cavity In oil circuit, therefore the silicone oil in power cavity will be reduced, and the rotating speed of fan also decreases.
It can be seen that the sensitivity that the angle that valve block opens and closes opens and closes with valve block is the core control point of electric-controlled silicon oil clutch work One of.When valve is closed, due to the effect of centrifugal force, silicone oil is stored in shoe cream room, fan idle running;According to different arteries and veins Dutycycle is rushed, controls the keying angle of valve block, silicone oil enters maze trough by a certain percentage, and constantly circulates;Fan has adaptable Rotation speed operation, valve block fully open, and maze trough is full of silicone oil, and constantly circulates, fan full-speed operation.
Although the patent is overcome present in the utility model patent that Chinese Patent Application No. is 201020505938.6 Only by spring reset but valve block resets very insecure problem, but the patent is still by the way that valve block to be rotated to certain angle Degree is to realize the opening and closing of oil outlet, therefore there is also the problem of the inaccuracy of the opening and closing of oil outlet for the patent.
Also, the valve block mechanism of the silicon oil filled fan clutch there is problems, two empennages punching of valve block dress screw The precompressed angle of system is important control point, and it is constant and make for a long time to be difficult to control valve block empennage angle according to current working condition The Flexible change caused by rear valve block fatigue, and then influence the use of electric control clutch assembly product.
Therefore, a kind of precompressed angle elastic reset that can replace valve block empennage how is produced, to eliminate because for a long time Using and cause valve block Flexible change influence valve be not closed completely and be opened and closed inaccurate failure mode into people in the art The technical problem of member's urgent need to resolve.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of electric-controlled silicon oil clutch.
A kind of electric-controlled silicon oil clutch of the present utility model, its technical scheme are:
A kind of electric-controlled silicon oil clutch, including main shaft, active plate, valve block mechanism, electromagnet mechanism, control system and institute State the follower plate that active plate is engaged and the oil piping system being arranged between active plate and follower plate, the active plate and master Axis connection, the valve block mechanism are arranged on the active plate;The oil piping system includes being used for shoe cream room, the use for storing silicone oil In the power cavity of clutch active plate and follower plate and oil outlet and spill port for connecting shoe cream room and power cavity;It is described Control system controls the valve block mechanism to swing up and down by controlling the electromagnet mechanism, the oil outlet is opened or Close;It is characterized in that:The valve block mechanism includes valve block, spring and the armature being fixedly connected with the valve block;The valve Piece includes valve body and valve head, and one end of the valve body is fixed on the boss on active plate, and the other end of the valve body is connected to In position limiting structure on active plate;The spring is arranged between the valve block and the main shaft, for driving the valve head Reset.
Wherein, counterbore is provided with the top of the main shaft, the spring is arranged in the counterbore;The depth of the counterbore Less than the length of the spring, the diameter of the counterbore is more than the external diameter of the spring.
Wherein, installation step is provided with the top of the main shaft, the spring is arranged on the installation step;The peace The height for filling step is less than the length of the spring, and the diameter of the installation step is less than the internal diameter of the spring.
Wherein, the pre compressed magnitude of the spring is the 10%-30% of its length, and the pre compressed magnitude of the spring is thrum After spring is compressed, the elastic deformation of spring.
Wherein, the spring is that the spring is Helix Cylinder Compressible Spring or helicon compression spring.
Wherein, the spring end ciphering type Helix Cylinder Compressible Spring or end ciphering type helicon compression spring.
Wherein, the spring is deformed compression spring.
Wherein, the deformed spring is provided with the spiral shell of base to be provided with top plate at the top of spring in the bottom of spring Cylindrical compression spring is revolved, through hole is provided with the top plate;Or, the deformed compression spring is that top is provided with big steel loop, bottom Portion is provided with the Helix Cylinder Compressible Spring for the concentric circles base being made up of the steel loop of multiple different-diameters.
Wherein, the deformed compression spring is that top is provided with big steel loop, and bottom is provided with by the steel of multiple different-diameters Ring group into concentric circles base Helix Cylinder Compressible Spring.
Wherein, the deformed compression spring is that both ends are big, the small Spring capable of diameter varying in middle part.
Implementation of the present utility model includes following technique effect:
Electric-controlled silicon oil clutch of the present utility model, the precompressed angle bullet of valve block empennage is replaced by using spring reset Property reset, eliminate because long-time use and caused by valve block Flexible change influence valve be not closed completely and open inaccurate failure Pattern, so as to improve the service life of the valve block of electric control clutch, safety and reliability.
Brief description of the drawings
Fig. 1 is a kind of structure chart of embodiment of the present utility model.
Fig. 2 is the structure chart of another embodiment of the present utility model.
Fig. 3 is the structure chart of active plate of the present utility model.
Fig. 4 is the structure chart of valve block mechanism of the present utility model.
Fig. 5 is valve structure figure of the present utility model.
Embodiment
The utility model is described in detail below in conjunction with embodiment and accompanying drawing, it should be pointed out that described Embodiment be intended merely to facilitate to understanding of the present utility model, and do not play any restriction effect to it.
As Figure 1-5, a kind of electric-controlled silicon oil clutch provided by the utility model, including main shaft 1, active plate 2, valve block The follower plate 6 and be arranged at the active plate 2 that mechanism 3, electromagnet mechanism 4, control system 5 and the active plate 2 coordinate With the oil piping system between follower plate 6, the active plate 2 is connected with the main shaft 1, and the valve block mechanism 3 is arranged on the master On dynamic plate 2;The oil piping system includes being used to store the shoe cream room 71 of silicone oil, for clutch active plate 2 and the power of follower plate 6 Chamber 72 and oil outlet 73 and spill port 74 for connecting shoe cream room 71 and power cavity 72;The control system 5 passes through control The electromagnet mechanism 4 controls the valve block mechanism 3 to swing up and down, by opening or closing for the oil outlet 73;It is described Valve block mechanism 3 includes spring 31, valve block 32 and the armature 33 being fixedly connected with the valve block 32;The valve block 32 includes valve Body 321 and valve head 322, one end 3211 of the valve body 321 are fixed on the boss 21 on active plate 2, the valve body it is another End 3212 is connected in the position limiting structure 22 on active plate 2;The spring 31 be arranged on the valve block 32 and the main shaft 1 it Between, for driving the reset of the valve head 322;The wire diameter of the spring 31 is 0.1-5mm.The electricity that the present embodiment provides Silicon oil clutch is controlled, the precompressed angle elastic reset of valve block empennage is replaced by using spring reset, is eliminated because for a long time Using and cause valve block Flexible change to influence valve and be not closed completely and do not open inaccurate failure mode, it is automatically controlled so as to improve The service life of the valve block of clutch, safety and reliability.
Control system 5 can control the energization and power-off of electromagnet mechanism 4, moreover it is possible in electricity when controlling electromagnet mechanism 4 Its internal size of current is controlled under the "on" position of magnet mechanism 4.When the electromagnet mechanism 4 of control system 5 is powered, under armature 33 Move, compression spring 31, valve head 322 is moved up, and valve head 322 is contacted with oil outlet 73, and oil outlet 73 is closed;When the electromagnetism of control system 5 Iron power off when, armature moves up, and spring 11 upsprings valve body 91 during reinstatement, and valve head 92 will move down, valve head 92 with Oil outlet 73 separates, and oil outlet 73 is opened.The control system of the silicon oil filled fan clutch is to use ripe circuit structure, This is no longer described in detail.
Preferably, as shown in figure 1, the top of the main shaft 1 is provided with counterbore 11, the spring 31 is arranged on the counterbore In 11;The depth of the counterbore 11 is less than the length of the spring 31, and the diameter of the counterbore 11 is more than the outer of the spring 31 Footpath.Or as shown in Fig. 2 the top of the main shaft 1 is provided with installation step 11 ', the height of the installation step 11 ' is less than described The length of spring 31, the diameter of the installation step 11 ' are less than the internal diameter of the spring 31.The present embodiment on main shaft by setting Installation step 11 ' is put, and the spring 31 is enclosed on the installation step 11 ', to prevent the transverse shifting of spring 31.The peace Step 11 ' is filled equivalent to support, spring 31 is stably set between main shaft 1 and valve block 32, avoids spring in compression process It is middle valve block to be resetted because producing flexural deformation, so as to ensure that spring 31 in whole work process all the time in main shaft 1 Worked between valve block 32.
Preferably, when the 10%-30% that the pre compressed magnitude of the spring 31 is its length, the precommpression of the spring 31 After amount refers to that spring is compressed, the elastic deformation of spring.
Preferably, the spring 31 is Helix Cylinder Compressible Spring or end ciphering type Helix Cylinder Compressible Spring;Or institute It is helicon compression spring or end ciphering type helicon compression spring to state spring 31.
Preferably, the spring 31 is deformed compression spring.
It is further preferred that the deformed spring is provided with to be provided with top plate at the top of spring in the bottom of spring The Helix Cylinder Compressible Spring of base, through hole is provided with the top plate;Or the deformed compression spring is that top is provided with greatly Steel loop, bottom are provided with the Helix Cylinder Compressible Spring for the concentric circles base being made up of the steel loop of multiple different-diameters;It is or described Deformed compression spring is that both ends are big, the small Spring capable of diameter varying in middle part.
Preferably, the spring 11 is carbon spring steel wires, and the trade mark is 25-80 or 40Mn-70Mn;Or the spring is qin Steel wire, the trade mark 60-80, T8MnA-T9A or 60Mn-70Mn;Or the spring is silicon-manganese spring steel silk, the trade mark is 60Si2MnA, 65Si2MnWA or 70Si2MnA;Or the spring is chrome alum spring steel wire, trade mark 50CrVA;Or the spring For chrome-silicon spring steel wire, trade mark 55CrSiA;Or the spring is stainless steel wire, the trade mark is A groups:1Cr18Ni9、 0Cr19Ni10 or 0Cr19Ni12Mo2, B group:1Cr18Ni9,0Cr18Ni10 or C group:0Cr17Ni8Al;Or the spring is silicon Bronze wire, trade mark QSn3-1;Or the spring is tin bronze line, the trade mark QSn4-3, QSn6.5-0.1, QSn6.5-0.4 or QSn7-0.2。
Finally it should be noted that above example is only illustrating the technical solution of the utility model, rather than to this reality With the limitation of novel protected scope, although being explained with reference to preferred embodiment to the utility model, this area it is general It is logical it will be appreciated by the skilled person that can be modified to the technical solution of the utility model or equivalent substitution, without departing from this The spirit and scope of utility model technical scheme.

Claims (9)

1. a kind of electric-controlled silicon oil clutch, including main shaft, active plate, valve block mechanism, electromagnet mechanism, control system, with it is described Follower plate that active plate is engaged and the oil piping system being arranged between active plate and follower plate, the active plate and main shaft Connection, the valve block mechanism are arranged on the active plate;The oil piping system is including being used to store the shoe cream room of silicone oil, being used for The power cavity of clutch active plate and follower plate and oil outlet and spill port for connecting shoe cream room and power cavity;The control System processed controls the valve block mechanism to swing up and down by controlling the electromagnet mechanism, and the oil outlet is beaten on or off Close;It is characterized in that:The valve block mechanism includes valve block and spring;The valve block includes valve body and valve head, and the one of the valve body End is fixed on the boss on active plate, and the other end of the valve body is connected in the position limiting structure on active plate;The spring It is arranged between the valve block and the main shaft, for driving the reset of the valve head.
A kind of 2. electric-controlled silicon oil clutch according to claim 1, it is characterised in that:It is heavy to be provided with the top of the main shaft Hole, the spring are arranged in the counterbore;The depth of the counterbore is less than the length of the spring, and the diameter of the counterbore is big In the external diameter of the spring.
A kind of 3. electric-controlled silicon oil clutch according to claim 1, it is characterised in that:Peace is provided with the top of the main shaft Step is filled, the spring is arranged on the installation step;The height of the installation step is less than the length of the spring, described The diameter of installation step is less than the internal diameter of the spring.
A kind of 4. electric-controlled silicon oil clutch according to claim 1, it is characterised in that:The pre compressed magnitude of the spring is bullet The 10%-30% of spring length.
A kind of 5. electric-controlled silicon oil clutch according to claim 4, it is characterised in that:The spring is Helix Cylinder Compressible Spring or helicon compression spring.
A kind of 6. electric-controlled silicon oil clutch according to claim 4, it is characterised in that:The spring is end ciphering type spiral shell Revolve cylindrical compression spring or end ciphering type helicon compression spring.
A kind of 7. electric-controlled silicon oil clutch according to claim 4, it is characterised in that:The spring is deformed compression bullet Spring.
A kind of 8. electric-controlled silicon oil clutch according to claim 7, it is characterised in that:The deformed spring is in spring Top is provided with top plate, and the Helix Cylinder Compressible Spring of base is provided with the bottom of spring, through hole is provided with the top plate; Or, the deformed compression spring is that top is provided with big steel loop, bottom be provided be made up of the steel loop of multiple different-diameters it is same The Helix Cylinder Compressible Spring of heart round bottom seat.
A kind of 9. electric-controlled silicon oil clutch according to claim 7, it is characterised in that:The deformed compression spring is both ends Greatly, the small Spring capable of diameter varying in middle part.
CN201721018138.XU 2017-08-15 2017-08-15 A kind of electric-controlled silicon oil clutch Expired - Fee Related CN207161567U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721018138.XU CN207161567U (en) 2017-08-15 2017-08-15 A kind of electric-controlled silicon oil clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721018138.XU CN207161567U (en) 2017-08-15 2017-08-15 A kind of electric-controlled silicon oil clutch

Publications (1)

Publication Number Publication Date
CN207161567U true CN207161567U (en) 2018-03-30

Family

ID=61717331

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721018138.XU Expired - Fee Related CN207161567U (en) 2017-08-15 2017-08-15 A kind of electric-controlled silicon oil clutch

Country Status (1)

Country Link
CN (1) CN207161567U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108798862A (en) * 2018-08-22 2018-11-13 温州车舟汽车部件有限公司 A kind of electric-controlled silicon oil clutch
CN108894865A (en) * 2018-08-22 2018-11-27 温州车舟汽车部件有限公司 A kind of new electronic control silicon oil clutch
CN113503208A (en) * 2021-07-30 2021-10-15 华纳圣龙(宁波)有限公司 Double-valve electric control silicone oil fan clutch
CN114251380A (en) * 2021-12-23 2022-03-29 苏州奥沃汽车配件有限公司 Magnetic circuit separated electric control silicone oil clutch structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108798862A (en) * 2018-08-22 2018-11-13 温州车舟汽车部件有限公司 A kind of electric-controlled silicon oil clutch
CN108894865A (en) * 2018-08-22 2018-11-27 温州车舟汽车部件有限公司 A kind of new electronic control silicon oil clutch
CN113503208A (en) * 2021-07-30 2021-10-15 华纳圣龙(宁波)有限公司 Double-valve electric control silicone oil fan clutch
CN114251380A (en) * 2021-12-23 2022-03-29 苏州奥沃汽车配件有限公司 Magnetic circuit separated electric control silicone oil clutch structure

Similar Documents

Publication Publication Date Title
CN107255122B (en) A kind of electric-controlled silicon oil clutch
CN207161567U (en) A kind of electric-controlled silicon oil clutch
BRPI0409774A (en) high speed programmable valve actuator
CN209430274U (en) The silicon oil filled fan clutch of marmem and magnet control
CN206801678U (en) A kind of magnetorheological fan clutch of temperature control
CN203755873U (en) Oil-free automatic door closer
CN206487793U (en) Electromagnetism multidisc clutch device, water pump and the vehicles with the device
CN207864734U (en) A kind of spring reset type Electric Actuator
CN205383131U (en) Built -in magneto -rheological fluid brake's pendulum actuating cylinder
CN209669419U (en) A kind of direct-drive type revolving cup and the revolving cup cluster control system with the direct-drive type revolving cup
CN108087094A (en) Electromagnetic clutch water pump with double frictional disks
CN205025223U (en) Non -contact electromagnetic induction locks for centrifugal separator
CN206770041U (en) Rotary idle speed control magnetic valve
CN204436557U (en) The how fast electric-control silicone oil fan clutch of one
CN204572211U (en) Magnetoresistive type electronic throttle
CN206770648U (en) Magnetic valve, changing air valve phase control device and vehicle
CN207053310U (en) Magnetic suspension motor and domestic air conditioning
CN206623455U (en) A kind of hydraulic press protects brake
CN207082445U (en) A kind of switching construction of contact-making switch
CN2922110Y (en) Primary rotating shaft armature structure with super-strong wear resistance
CN201104350Y (en) Soft start permanent magnetic brake motor
CN204464083U (en) A kind of Monostable permanent magnetism operating mechanism
CN202301999U (en) Wafer electric butterfly valve
CN203144621U (en) Electromagnetic valve pulley component of electronic jacquard machine
CN217634143U (en) Device for improving maneuverability and sealing performance of electric valve

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20180330

Termination date: 20200815