CN110735965A - pilot electromagnetic valves - Google Patents

pilot electromagnetic valves Download PDF

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Publication number
CN110735965A
CN110735965A CN201911100077.5A CN201911100077A CN110735965A CN 110735965 A CN110735965 A CN 110735965A CN 201911100077 A CN201911100077 A CN 201911100077A CN 110735965 A CN110735965 A CN 110735965A
Authority
CN
China
Prior art keywords
valve
valve seat
cavity
assembly
sealing
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.)
Pending
Application number
CN201911100077.5A
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Chinese (zh)
Inventor
丁柏勇
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.)
Zhejiang Yi Da Auto Parts And Components Co Ltd
Original Assignee
Zhejiang Yi Da Auto Parts And Components 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 Zhejiang Yi Da Auto Parts And Components Co Ltd filed Critical Zhejiang Yi Da Auto Parts And Components Co Ltd
Priority to CN201911100077.5A priority Critical patent/CN110735965A/en
Publication of CN110735965A publication Critical patent/CN110735965A/en
Pending legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • 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
    • 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
    • F16K1/465—Attachment of sealing rings to the 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
    • 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
    • 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
    • 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

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 pilot electromagnetic valves, which comprise a valve body, a valve core assembly, a valve core spring, a valve seat assembly, a valve cover assembly, a positioning ring, a coil assembly and a coil fixing assembly, wherein an inlet channel is arranged in the valve body and is connected with a main cavity, an installation cavity is connected above the main cavity, a sealing cavity is connected above the installation cavity, an outlet channel is also connected below the main cavity, a valve body connecting channel is arranged in the installation cavity and is connected with the outlet channel and the installation cavity, the valve core assembly is installed in the main cavity, the valve seat assembly is installed above the valve core assembly, the valve core spring is arranged between the valve core assembly and the valve seat assembly, the positioning ring is fixedly installed at the upper end of the valve seat assembly, the valve cover assembly is also installed in a matched mode in the valve seat assembly, the coil assembly is installed outside the valve cover assembly in a matched mode, and the valve cover assembly are fixedly connected through.

Description

pilot electromagnetic valves
Technical Field
The invention relates to the field of automobile air conditioner control devices, in particular to pilot electromagnetic valves.
Background
In an air conditioning system for an automobile, a solenoid valve is used to control opening and closing of fluid, a pilot type solenoid valve is used in a large diameter, in order to reduce power consumption, a two-stage pilot type solenoid valve is used, as shown in prior patent No. cn105135029a, when a coil is energized, a plunger is driven downward against the biasing force of a plunger spring, a valve shaft is moved downward with a plunger by the biasing force of a 2 nd closing spring, a spool portion of a 2 nd spool of the valve shaft is pressed against a pilot valve core, a pilot hole of the pilot spool is closed by a spool portion of a 2 nd spool, and at the same time, the pilot valve core is moved downward with a valve shaft against the biasing force of a valve opening spring, and the pilot valve core is pressed against a 2 nd valve seat of a 2 nd pilot passage to close the 2 nd valve port, a flow path of high pressure fluid (refrigerant) is formed by introducing the high pressure fluid (refrigerant) into a 1 st valve chamber of an inflow chamber, then flowing into a 1 st pressure equalizing passage of a 1 st spool, and then flowing into a 1 st valve chamber through a sliding surface of a large diameter portion of a piston ring, flowing into a sliding surface (with a transverse hole) of the inflow chamber, and flowing into a sliding surface of the piston ring, and flowing into a second valve chamber, and flowing out of the second valve chamber, and flowing into the second valve chamber, and flowing out of the valve chamber, and flowing into the valve chamber, when the valve chamber, and flowing into the valve chamber, and flowing out of the valve chamber.
Disclosure of Invention
The invention provides pilot electromagnetic valves, which have the characteristics of short response time, simple structure of the electromagnetic valve, small space and low cost, and is realized by the following technical scheme:
pilot electromagnetic valve comprises a valve body, a valve core assembly, a valve core spring, a valve seat assembly, a valve cover assembly, a positioning ring, a coil assembly and a coil fixing assembly, wherein an inlet channel is arranged in the valve body and connected with a main cavity, an installation cavity is connected above the main cavity, a sealing cavity is connected above the installation cavity, an outlet channel is further connected below the main cavity, a valve body connecting channel is arranged in the installation cavity and connected with the outlet channel and the installation cavity, the valve core assembly is arranged in the main cavity, the lower end of the valve core assembly is used for being matched with the sealing outlet channel, the valve seat assembly is arranged above the valve core assembly and matched with the sealing cavity, the installation cavity and the main cavity, the valve core spring is arranged between the valve core assembly and the valve seat assembly, the positioning ring is fixedly arranged at the upper end of the valve seat assembly, the valve cover assembly is also arranged in the valve seat assembly in a matched manner, the lower end of the iron core assembly in the valve cover assembly is used for being.
, arranging threads on the inner wall of the installation cavity in the valve body, wherein the diameter of the installation cavity is larger than that of the main cavity, the connection position is a plane, a valve body connecting channel communicated between the installation cavity and the outlet channel is arranged on the plane, and the lower part of the main cavity is provided with a valve body sealing boss, and the outlet channel is arranged in the valve body sealing boss and communicated with the main cavity.
, connecting a counter bore at the other end of the inlet channel in the valve body, connecting a second counter bore at the other end of the outlet channel, forming a threaded hole at the same side of the valve body with the counter bore, forming a second threaded hole at the same side of the valve body with the second counter bore, forming a counter bore and the second counter bore respectively for connecting with a joint of a corresponding connecting block, forming a threaded hole and a second threaded hole respectively for connecting and fixing with a through hole of the corresponding connecting block, and forming and or more third threaded holes at the bottom of the valve body for fixing the solenoid valve with a system.
, the valve core component comprises a valve core, a valve core sealing ring and a gasket, the valve core sealing ring and the gasket are matched with the valve core to play a sealing role, the diameter of the top excircle of the valve core is larger than that of the bottom excircle, a valve core counter bore is arranged in the top of the valve core, a damping hole is arranged at the bottom of the valve core counter bore, a valve core transverse through hole is arranged in the middle of the valve core, the other end of the damping hole is intersected with the valve core transverse through hole, a sinking ring is arranged at the bottom of the valve core, and the sinking.
, the valve seat assembly comprises a valve seat and a valve seat sealing ring, the center of the top of the valve seat is provided with a connecting cavity and a valve seat sealing cavity, the connecting cavity is located above the valve seat sealing cavity, the bottom of the valve seat sealing cavity is provided with a valve seat sealing boss, the valve seat sealing boss is provided with a valve seat pilot hole, the middle of the valve seat is provided with a transverse valve seat channel, the transverse valve seat channel is communicated with the valve seat pilot hole, the bottom of the valve seat is also provided with a valve seat counter bore, the valve seat pilot hole is not communicated with the valve seat counter bore, the bottom of the valve seat sealing cavity is also provided with a valve seat connecting channel, the valve seat connecting channel is connected with the valve seat counter bore.
, arranging a valve seat sealing groove outside the upper end of the valve seat, arranging a second valve seat sealing groove outside the lower end of the valve seat, wherein the sealing grooves are matched with valve seat sealing rings, a sealing ring in the valve seat sealing groove is contacted with the inner wall of a sealing cavity in the valve body, a sealing ring in the second valve seat sealing groove is contacted with the inner wall of a main cavity in the valve body, the upper end of the valve seat of the installation cavity is matched with the sealing cavity of the valve body, and the lower end of the valve seat is matched with the main cavity of the valve body.
, the valve cover assembly comprises a valve cover, a valve cover sealing ring, a sleeve, a static iron core, a movable iron core assembly and a pilot spring, the valve cover is assembled in a connecting cavity and a sealing cavity at the top of the valve seat, the valve cover sealing ring is assembled at the bottom of the valve cover, the iron core assembly is assembled in the valve cover, the static iron core is assembled at the upper end of the iron core assembly, the spring is arranged between the static iron core and the iron core assembly, the sleeve is sleeved outside the static iron core and the iron core assembly, and the sleeve is fixedly.
, arranging an external thread on the upper part of the valve cover, arranging a sealing groove on the lower part of the valve cover, matching the sealing ring of the valve cover, arranging a containing cavity in the center of the bottom of the valve cover, arranging a groove in the top of the valve cover, communicating the containing cavity with the groove of the valve cover, and arranging a plurality of counter bores on the top of the valve cover.
, fixing the coil assembly, wherein the coil assembly comprises a coil and a magnetic conduction frame, the magnetic conduction frame comprises an upper plane, a side plane and a lower plane, a groove and a convex point are arranged on the upper plane, a coil boss is arranged on the top of the coil, a concave point is arranged on the coil boss, the groove of the magnetic conduction frame is matched with the coil boss of the coil, the convex point of the magnetic conduction frame is matched with the concave point of the coil, the coil is fixed in the magnetic conduction frame, and and or more inner convex points are arranged on the upper surface of the lower plane of the magnetic conduction frame and used for fixing the coil on the magnetic conduction frame.
, fixing the coil assembly and a positioning ring, wherein and outer salient points are arranged at the bottom of the coil assembly, the positioning ring comprises an upper outer circular ring, a lower outer circular ring, an inner circular ring and an arc groove on the inner circular ring, and an outer convex point at the bottom of the coil assembly is matched with the arc groove of the positioning ring and used for fixing the turnover angle of the coil assembly and the positioning ring.
The beneficial effect of above-mentioned scheme lies in:
1. the main cavity, the installation cavity and the sealing cavity of the valve body are designed at the same end by the electromagnetic valve with the structure, the structure is optimized, the space size of the electromagnetic valve is reduced, and the material cost of the valve body and the valve seat is reduced by about 20%.
2. Through the design of the internal structure of the valve seat, various cavities and channels have the effect in the valve seat, so that the secondary valve core is reduced, and the similar pressure reduction effect of the secondary valve core is also achieved, so that the structure is simpler, the parts are fewer, and the manufacturing cost and the material cost of redundant parts are reduced.
3. And because the secondary valve core is reduced, the corresponding time for opening and closing the valve is shortened, the response time is faster than that of a secondary pilot type electromagnetic valve, and the response time is accelerated to 20 milliseconds from 1.5 seconds.
4. Because the pressure reduction effect similar to that of the secondary valve core is achieved, the electromagnetic force of upward movement of the movable iron core assembly can be reduced, namely, the power of the coil is reduced, and the material cost of the coil and the power consumption of the electromagnetic valve during opening and closing are reduced.
5. Through the inner structure of the positioning ring, the positioning ring is combined with the valve body and the coil assembly, and the direction of the arc groove of the positioning ring and the direction of the valve body are appointed according to the directions of the coil assembly and the valve body. The direction of coil pack and valve body is controlled according to the different needs of customer promptly, as long as adjust the location frock, need not make different holding rings, makes the solenoid valve product more standardized, reduces the inventory and the production cycle of spare part promptly, reduction in production cost.
Drawings
FIG. 1 is a front cross-sectional view of an embodiment of a solenoid valve configuration according to the present invention;
FIG. 2 is a front cross-sectional view of a valve body of embodied solenoid valves according to the present invention;
FIG. 3 is a perspective view of the valve body of specific embodiments of the present invention;
FIG. 4 is a cross-sectional view of an embodiment solenoid valve cartridge according to the present invention;
FIG. 5 is a front cross-sectional view of embodied solenoid valve seats according to the present invention
FIG. 6 is a side cross-sectional view of a valve seat of embodied solenoid valves according to the present invention;
FIG. 7 is a perspective view of embodied solenoid valve seats according to the present invention;
FIG. 8 is another degree perspective view of the valve seat of the embodiment of the present invention;
FIG. 9 is a cross-sectional view of the valve cover of embodied solenoid valves according to the present invention;
FIG. 10 is a front view of exemplary solenoid valve positioning rings according to the present invention
FIG. 11 is a top view of exemplary solenoid valve positioning rings according to the present invention;
FIG. 12 is an enlarged view of a portion of FIG. 10;
FIG. 13 is a perspective view of an embodiment solenoid valve yoke according to the present invention;
FIG. 14 is a front cross-sectional view of specific embodiments of a normally closed solenoid valve configuration according to the present invention;
FIG. 15 is a side cross-sectional view of specific embodiments of a normally closed solenoid valve configuration according to the present invention;
FIG. 16 is a perspective view of embodied normally closed solenoid valves of the present invention;
FIG. 17 is a perspective view of another embodied normally open solenoid valve in accordance with the present invention;
FIG. 18 is a view showing the usage state of another embodied normally open solenoid valves of the present invention;
fig. 19 is a front cross-sectional view of another embodied normally open solenoid valve configuration of the present invention.
The specific implementation mode is as follows:
the invention is further described with reference to the drawings and the detailed description.
As shown in fig. 1, the solenoid valve includes a valve body 1, a valve core assembly 2, a valve core spring 3, a valve seat assembly 4, a valve cover assembly 5, a positioning ring 6, a coil assembly 7, and a coil fixing assembly 8.
As shown in fig. 4 and 5, a main cavity 101 is arranged in the middle of a valve body 1, an installation cavity 110 and a sealing cavity 111 are arranged at the upper part of the main cavity 101, -th threads 1101 are arranged on the periphery of the installation cavity 110, the diameter of the installation cavity 110 is larger than that of the main cavity 101 of the valve body 1, the connection position is a -th plane 1102, a valve body connecting channel 1103 is arranged at the 0-th plane 1102, the other 1 end of the valve body connecting channel 1103 is intersected with an outlet channel 105, a counter bore 102 is arranged on the side of the valve body 1, a second counter bore 106 is arranged on the other side of the valve body 1, the channel connecting the main cavity 101 and the counter bore 102 is an inlet channel 103, a valve body sealing boss 104 is arranged on the lower part of the main cavity 101 of the valve body 1, an outlet channel 105 is arranged in the center of the valve body sealing boss 104, the outlet channel 105 is communicated with the second counter bore 106 on the other side of the valve body 1, and the solenoid valve body 1 is designed at the same end, so that the structure is more optimized, the space size.
As shown in FIGS. 4 and 5, a counter bore 102 is arranged on the 1 side of the valve body 1, a threaded hole 107 is arranged on the side of the 0 counter bore 102, a second threaded hole 108 is arranged on the side of the second counter bore 106 of the valve body 1, the counter bore 102 and the second counter bore 106 of the valve body 1 are respectively sealed with a joint of a corresponding connecting block, the threaded hole 107 and the second threaded hole 108 are respectively connected and fixed with a through hole of the corresponding connecting block through screws, and more than third threaded holes 109 are arranged at the bottom of the valve body 1, and the whole solenoid valve is fixed with a system through the third threaded holes 109.
As shown in fig. 1, a valve core assembly 2 is installed in the main cavity 101, and the lower end of the valve core assembly 2 is used for matching and sealing the outlet channel 105; the valve seat assembly 4 is arranged above the valve core assembly 2 and matched with the sealing cavity 111, the mounting cavity 110 and the main cavity 101; a valve core spring 3 is arranged between the valve core component 2 and the valve seat component 4; the upper end of the valve seat assembly 4 is fixedly provided with a positioning ring 6 in a matching way, meanwhile, the upper end of the valve seat assembly 4 is also provided with a valve cover assembly 5 in a matching way, and the lower end of an iron core assembly 55 in the valve cover assembly 5 is used for matching with a valve seat pilot hole 419 in the valve seat 41 in the sealing valve seat assembly 4; the valve cover component 5 is externally provided with a coil component 7 in a matching way, and the two are fixedly connected through a coil component fixing part 8.
The valve core assembly 2 comprises a valve core 21, a valve core sealing ring 22 and a gasket 23, as shown in fig. 1 and 4, the valve core 21 is dumbbell-shaped, the diameter of the top outer circle 211 of the valve core is larger than that of the bottom outer circle 212 of the valve core, valve core counter bores 213 are arranged in the top of the valve core 21, a damping hole 214 is arranged in the center of the valve core counter bore 213, the other end of the damping hole 214 is intersected with a valve core transverse through hole 215, a counter ring 216 is arranged at the bottom, the counter ring 216 is arranged in the valve core sealing ring 22 and the gasket 23, and the valve core sealing ring.
The valve seat assembly 4 includes a valve seat 41 and a valve seat sealing ring 42, as shown in fig. 5, 6, 7 and 8, a second thread 411 and a valve seat boss 412 are arranged on the top outer circle of the valve seat 41, a third valve seat sealing groove 413 is arranged at the joint of the second thread 411 and the valve seat boss 412, a step ring 414 and a valve seat counter bore 415 are arranged at the bottom of the valve seat 41, a large ring 4141 is arranged at the upper part of the step ring 414, a small ring 4142 is arranged at the lower part of the step ring 414, the joint part is a third plane 4143, second planes 41412 are respectively arranged on two sides of the large ring 4141, a transverse valve seat channel 421 is arranged on the second plane 41412, a second valve seat sealing groove 4144 is arranged at the small ring 4142, the valve seat 41 is connected with a third thread 1101 of the valve body 1 installation cavity 110 through the second thread 411, and the upper and lower positions of the valve seat 41 are fixed by the third plane 4143 of the valve seat 41 abutting against a plane of the valve body 1.
As shown in fig. 5, 6, 7 and 8, the center of the top of the valve seat 41 is provided with a connecting cavity 416, a valve seat sealing cavity 417, a valve seat sealing boss 418, a valve seat pilot hole 419 and a valve seat connecting channel 420, the connecting cavity 416 comprises a thread 4161 on the periphery and a relief groove 4162 for machining, the valve seat pilot hole 419 is arranged in the center of the valve seat sealing boss 418, the valve seat pilot hole 419 is not communicated with the valve seat counterbore 415, the valve seat pilot hole 419 is communicated with the transverse valve seat channel 421, the valve seat connecting channel 420 is not communicated with the transverse valve seat channel 421, the valve seat sealing cavity 417 is connected with the valve seat counterbore 415 by the valve seat connecting channel 420, the diameter of the valve seat pilot hole 419 is not more than that of the transverse valve seat channel 421, and the diameter of the valve seat pilot hole 419. The structure reduces the secondary valve core, but achieves the similar pressure reduction effect of the secondary valve core, so the structure is simpler, the parts are fewer, the manufacturing cost and the material cost of redundant parts are reduced, and the corresponding time for opening and closing the valve is shortened due to the reduction of the secondary valve core. Because the similar decompression effect of the secondary valve core is achieved, the upward moving electromagnetic force of the movable iron core assembly 55 can be reduced, namely, the power of the coil is reduced, and the material cost of the coil and the power consumption of the electromagnetic valve during opening and closing are reduced.
As shown in fig. 5, 6, 7 and 8, the outer diameter of the large ring 4141 of the valve seat 41 is larger than the outer diameter of the main cavity 101 of the valve body 1, the outer diameter of the large ring 4141 of the valve seat 41 is smaller than the outer diameter of the installation cavity 110 of the valve body 1, and the hollow cross-sectional area formed by the large ring 4141 of the valve seat 41 and the installation cavity 110 of the valve body 1 is larger than or equal to the cross-sectional area of the center of the circle of the valve body connecting passage 1103.
As shown in fig. 5, 6, 7 and 8, circular ring grooves 422 are formed on the top surfaces of the connection chamber 416 of the valve seat 41 and the valve seat boss 412, two or more valve seat counter bores 423 are formed in the bottom of the circular ring grooves 422, a boss nail wrench with the corresponding number of the valve seat counter bores 423 is used for extending into the valve seat counter bores 423, and the valve seat 41 is rotated and tightened so that the third plane 4143 of the valve seat 41 abuts against the plane 1102 of the valve body 1.
As shown in fig. 5, 6, 7 and 8, the -th seat seal groove 413 of the seat 41 is fitted with the seal ring 42, and the seal ring groove 413 of the seat 41 is sealed with the seal cavity 111 of the valve body 1.
The valve cover assembly 5 consists of a valve cover 51, a valve cover sealing ring 52, a sleeve 53, a static iron core 54, a movable iron core assembly 55 and a pilot spring 56. As shown in fig. 9, the upper portion of the bonnet 51 is provided with a bonnet external thread 511, the lower portion of the bonnet 51 is provided with a bonnet boss 512, the bonnet boss 512 is internally provided with a bonnet sealing groove 513, the lower center of the bonnet 51 is provided with an accommodating cavity 515, the upper center of the bonnet 51 is provided with a bonnet groove 516, the bonnet external thread 511 of the bonnet 51 is connected with the valve seat internal thread 4161 of the valve seat 41, the bonnet groove 516 of the bonnet 51 is welded and fixed with the sleeve 53 after being pressed and mounted, the bonnet sealing groove 513 of the bonnet 51 is mounted in the bonnet sealing ring 52 and then is matched and sealed with the peripheral wall 4171 of the valve seat sealing cavity 417 of the valve seat 41, two or more bonnet counter bores 517 are arranged between the bonnet external thread 511 of the bonnet 51 and the bonnet groove 516, the wrench with bosses with the corresponding number of the bonnet counter bores 517 is used for extending into the bonnet counter bores 517, the bonnet 51.
As shown in fig. 10, 11, and 12, the positioning ring 6 is made of aluminum or aluminum alloy, the positioning ring 6 is provided with an upper outer ring 61, a lower outer ring 62, an inner ring 63, and an arc groove 64 on the inner ring 63, the positioning ring 6 is pressed into the annular groove 422 of the valve seat 41, the diameter of the upper outer ring 61 of the positioning ring 6 is greater than the diameter of the outer circle of the annular groove 422 of the valve seat 41, that is, the upper outer ring 61 of the positioning ring 6 abuts against the outer circle of the annular groove 422 of the valve seat 41 after press-fitting, the diameter of the lower outer ring 62 of the positioning ring 6 is less than the diameter of the outer circle of the annular groove 422 of the valve seat 41, the diameter of the inner ring 63 of the positioning ring 6 is less than the diameter of the outer circle of the annular groove 422 of the valve seat 41, that the inner ring 63 of the positioning ring 6 has a gap with the outer circle of the annular groove 422 of the valve seat 41, that the gap is greater than 0.2mm, that the lower ring 62 of the lower ring segment 62 of the positioning ring 6 can be directly installed into the annular groove 422 of the valve seat 41, that the valve body 1 is installed into the valve body 1, that the valve body is installed into the positioning fixture, that the valve seat 41, that the valve body is installed into the valve seat, that the valve body, that the valve seat 41, the fixture is not required by the standard, that the peripheral ring 61 of the peripheral ring 6, the peripheral ring 61 is not required by the peripheral groove, that the peripheral groove of the peripheral groove 422 of the peripheral groove of the positioning ring 6, the peripheral groove 422 of the peripheral groove of the positioning ring 6, the peripheral groove 422 of the peripheral groove of the fixture, that the peripheral groove of.
As shown in fig. 13, the magnetic conduction frame 72 is shaped like frame turned by 90 degrees, and is folded by metal plates into an upper plane 721, a side plane 722 and a lower plane 723, the upper plane 721 is formed by grooves 7211 and salient points 7212, the grooves 7211 of the magnetic conduction frame 72 are matched with the coil bosses 711 of the coil 71, the salient points 7212 of the magnetic conduction frame 72 are matched with the concave points of the coil 71, so that the coil 71 can be fixed in the magnetic conduction frame 72, in order to prevent the coil bosses 711 of the coil 71 from being too low to position the coil 71, two or more than two inner salient points 7231 are arranged on the lower plane 723 of the magnetic conduction frame 72, so as to ensure that the coil 71 is fixed on the magnetic conduction frame 72, and or more than outer salient points 7232 are arranged on the lower plane 723 of the magnetic conduction frame 72, and the outer salient points 7232 of the magnetic conduction frame 72 are arranged in the circular arc grooves 64 of the positioning ring 6, so that the angles of the magnetic conduction frame 72 and the.
As shown in fig. 14 and 15, the medium enters the accommodating chamber 1-1 formed by the lower half section of the main chamber 101 and the lower half section of the valve element 21 from the inlet channel 103 of the valve body 1, then enters the damping hole 214 through the valve element transverse through hole 215 of the valve element 21, enters the back pressure chamber 1-2 formed by the valve element counterbore 213 of the valve element 21 and the valve seat counterbore 415 of the valve seat 41, and then enters the pilot chamber 1-3 through the valve seat connecting channel 420.
As shown in fig. 16, the solenoid valve can be selected as a normally closed solenoid valve; as shown in fig. 14 and 15, when the solenoid valve is not energized, the movable iron core assembly 55 is under the elastic force of the pilot spring 56, so that the movable iron core assembly 55 abuts against the valve seat pilot hole 419, that is, the valve seat pilot hole 419 is closed, the pilot chamber 1-3 is blocked from the back pressure chamber 1-2, the valve core assembly 2 is under the elastic force of the valve core spring 3, so that the valve core assembly 2 is sealed from the valve port 104 of the valve body 1, and the inlet channel 103 and the outlet channel 105 are blocked;
when the electromagnetic valve is powered on, the movable iron core assembly 55 overcomes the elastic force of the pilot spring 56, moves upwards, and makes the movable iron core assembly 55 leave the valve seat pilot hole 419, the pilot cavity 1-3 is communicated with the back pressure cavity 1-2, the pressure of the back pressure cavity 1-2 is reduced, when the pressure of the back pressure cavity 1-2 side is smaller than the pressure of the accommodating cavity 1-1 side, the force generating pressure difference can overcome the elastic force of the valve core spring 3, the valve core assembly 2 leaves the main valve port 104, and the inlet channel 103 is communicated with the outlet channel 105 through the main valve port 104.
As shown in fig. 17, 18, and 19, when the solenoid valve is energized, the movable iron core assembly 55 overcomes the elastic force of the pilot spring 56, the movable iron core assembly 55 moves downward, so that the movable iron core assembly 55 abuts against the valve seat pilot hole 419, that is, the valve seat pilot hole 419 is closed, the pilot chamber 1-3 is closed from the back pressure chamber 1-2, the valve core assembly 2 is under the elastic force of the valve core spring 3, so that the valve core assembly 2 is sealed from the valve port 104 of the valve body 1, and the inlet channel 103 and the outlet channel 105 are closed;
when the electromagnetic valve is not powered on, the movable iron core assembly 55 is under the action of the elastic force of the pilot spring 56, the movable iron core assembly 55 leaves the valve seat pilot hole 419, the pilot cavity 1-3 is communicated with the back pressure cavity 1-2, the pressure of the back pressure cavity 1-2 is reduced, when the pressure of the back pressure cavity 1-2 side is smaller than the pressure of the accommodating cavity 1-1 side, the force generating pressure difference can overcome the elastic force of the valve core spring 3, the valve core assembly 2 leaves the main valve port 104, and the inlet channel 103 is communicated with the outlet channel 105 through the main valve port 104.
The above is the preferred embodiment of the present invention, and several other simple substitutions and modifications made on the premise of the inventive concept should be considered as falling into the protection scope of the present invention.

Claims (10)

  1. The pilot electromagnetic valve is characterized in that an inlet channel is arranged in the valve body and connected with a main cavity, an installation cavity is connected above the main cavity, a sealing cavity is connected above the installation cavity, an outlet channel is connected below the main cavity, a valve body connecting channel is arranged in the installation cavity and connected with the outlet channel and the installation cavity, a valve core assembly is arranged in the main cavity, the lower end of the valve core assembly is used for being matched with the sealing outlet channel, a valve seat assembly is arranged above the valve core assembly and matched with the sealing cavity, the installation cavity and the main cavity, the valve core spring is arranged between the valve core assembly and the valve seat assembly, the positioning ring is fixedly arranged at the upper end of the valve seat assembly, the valve cover assembly is also arranged in the valve seat assembly in a matched mode, the lower end of the valve core assembly in the valve cover assembly is used for being matched with a pilot hole in a valve seat in the valve seat assembly, and a coil assembly is arranged outside the valve cover assembly in a matched mode and fixedly connected with the valve seat assembly through a coil assembly fixing piece.
  2. 2. The kinds of pilot solenoid valves of claim 1, wherein the valve body has a th thread on the inner wall of the installation cavity, the diameter of the installation cavity is larger than that of the main cavity, the connection point is a th plane, the valve body connection channel connecting the installation cavity and the outlet channel is arranged on the plane, the lower part of the main cavity is provided with a valve body sealing boss, and the outlet channel is arranged in the valve body sealing boss and is communicated with the main cavity.
  3. 3. The pilot electromagnetic valves according to claim 1 or 2, wherein a th counter bore is connected to the other end of the inlet channel, a second counter bore is connected to the other end of the outlet channel, a th threaded hole is formed in the same side of the valve body with the th counter bore, a second threaded hole is formed in the same side of the valve body with the second counter bore, the th counter bore and the second counter bore are respectively used for being connected with a connector of a corresponding connecting block, the th threaded hole and the second threaded hole are respectively used for being connected and fixed with a through hole of the corresponding connecting block, and and or more third threaded holes are formed in the bottom of the valve body and are used for fixing the electromagnetic valve with a system.
  4. 4. The kinds of pilot electromagnetic valves of claim 1, wherein the spool assembly comprises a spool, a spool seal ring and a washer, the spool seal ring and the washer are engaged with the spool to seal, the diameter of the top outer circle of the spool is larger than that of the bottom outer circle, the top of the spool is provided with a spool counter bore, the bottom of the spool counter bore is provided with a damping hole, the middle of the spool is provided with a spool transverse through hole, the other end of the damping hole is intersected with the spool transverse through hole, the bottom of the spool is provided with a counter ring, and the counter ring is engaged with the spool seal ring and the washer.
  5. 5. The kinds of pilot electromagnetic valves according to claim 1, wherein the valve seat assembly comprises a valve seat and a valve seat seal ring, the top center of the valve seat is provided with a connecting cavity and a valve seat seal cavity, the connecting cavity is located above the valve seat seal cavity, the bottom of the valve seat seal cavity is provided with a valve seat seal boss, the valve seat seal boss is provided with a valve seat pilot hole, the middle of the valve seat is provided with a transverse valve seat channel, the transverse valve seat channel is communicated with the valve seat pilot hole, the bottom of the valve seat is further provided with a valve seat counter bore, the valve seat pilot hole is not communicated with the valve seat counter bore, the bottom of the valve seat seal cavity is further provided with a valve seat connecting channel, the valve seat counter bore is connected with the valve seat seal cavity, the.
  6. 6. The pilot electromagnetic valves according to claim 5, wherein the valve seat has a th sealing groove outside the upper end, and a second sealing groove outside the lower end, and the sealing grooves are fitted with sealing rings of the valve seat, the sealing ring in the th sealing groove of the valve seat is in contact with the inner wall of the sealing cavity in the valve body, the sealing ring in the second sealing groove of the valve seat is in contact with the inner wall of the main cavity in the valve body, the upper end of the valve seat of the installation cavity is fitted with the sealing cavity of the valve body, and the lower end of the valve seat is fitted with the main cavity of the valve body.
  7. 7. The kinds of pilot electromagnetic valves according to claim 1, wherein the valve cover assembly comprises a valve cover, a valve cover sealing ring, a sleeve, a static iron core, a movable iron core assembly and a pilot spring, the valve cover is assembled in a connecting cavity and a sealing cavity at the top of the valve seat, the valve cover sealing ring is assembled at the bottom of the valve cover, the iron core assembly is assembled in the valve cover, the static iron core is assembled at the upper end of the iron core assembly, the spring is arranged between the static iron core and the iron core assembly, the sleeve is sleeved outside the static iron core and the iron core assembly, and the sleeve is fixedly.
  8. 8. The pilot operated solenoid valve of claim 7, wherein the top of the cap has male threads and the bottom has a sealing groove, the sealing groove is engaged with the sealing ring, the bottom center of the cap has a receiving cavity, the top center of the cap has a cap groove, the receiving cavity is connected to the cap groove, and the top of the cap has a plurality of counter bores.
  9. 9. The kinds of pilot electromagnetic valves of claim 1, wherein the coil assembly comprises a coil and a magnetic frame, the magnetic frame comprises an upper plane, a side plane and a lower plane, the upper plane is provided with a groove and a convex point, the top of the coil is provided with a coil boss, the coil boss is provided with a concave point, the groove of the magnetic frame is matched with the coil boss of the coil, the convex point of the magnetic frame is matched with the concave point of the coil, the coil is fixed in the magnetic frame, and the upper surface of the lower plane of the magnetic frame is provided with and or more inner convex points for fixing the coil on the magnetic frame.
  10. 10. The pilot electromagnetic valve as claimed in claim 1, wherein the coil assembly has and or more protrusions at its bottom, the positioning ring includes arc grooves on its upper and lower rings, inner ring and inner ring, and the protrusions at the bottom of the coil assembly are matched with the arc grooves of the positioning ring to fix the rotation angle of the coil assembly and the positioning ring.
CN201911100077.5A 2019-11-12 2019-11-12 pilot electromagnetic valves Pending CN110735965A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911100077.5A CN110735965A (en) 2019-11-12 2019-11-12 pilot electromagnetic valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911100077.5A CN110735965A (en) 2019-11-12 2019-11-12 pilot electromagnetic valves

Publications (1)

Publication Number Publication Date
CN110735965A true CN110735965A (en) 2020-01-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911100077.5A Pending CN110735965A (en) 2019-11-12 2019-11-12 pilot electromagnetic valves

Country Status (1)

Country Link
CN (1) CN110735965A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113757398A (en) * 2020-06-03 2021-12-07 浙江三花智能控制股份有限公司 Electromagnetic valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH650320A5 (en) * 1983-01-28 1985-07-15 Fluid Automation Syst Solenoid valve
WO2013097446A1 (en) * 2011-12-31 2013-07-04 Danfoss (Tianjin) Ltd. Solenoid valve
CN105135029A (en) * 2014-05-26 2015-12-09 株式会社不二工机 Two-stage pilot solenoid valve
CN209146387U (en) * 2018-11-14 2019-07-23 惠州市高斯强电子有限公司 A kind of low-power consumption self-holding electromagnetic valve
CN209294525U (en) * 2018-10-30 2019-08-23 杭州三花研究院有限公司 Solenoid valve
CN210890328U (en) * 2019-11-12 2020-06-30 浙江易达汽车零部件有限公司 Electromagnetic valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH650320A5 (en) * 1983-01-28 1985-07-15 Fluid Automation Syst Solenoid valve
WO2013097446A1 (en) * 2011-12-31 2013-07-04 Danfoss (Tianjin) Ltd. Solenoid valve
CN105135029A (en) * 2014-05-26 2015-12-09 株式会社不二工机 Two-stage pilot solenoid valve
CN209294525U (en) * 2018-10-30 2019-08-23 杭州三花研究院有限公司 Solenoid valve
CN209146387U (en) * 2018-11-14 2019-07-23 惠州市高斯强电子有限公司 A kind of low-power consumption self-holding electromagnetic valve
CN210890328U (en) * 2019-11-12 2020-06-30 浙江易达汽车零部件有限公司 Electromagnetic valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113757398A (en) * 2020-06-03 2021-12-07 浙江三花智能控制股份有限公司 Electromagnetic valve

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