CN107152552B - Multistage action electromagnetic valve and pipeline system - Google Patents
Multistage action electromagnetic valve and pipeline system Download PDFInfo
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- CN107152552B CN107152552B CN201710549665.1A CN201710549665A CN107152552B CN 107152552 B CN107152552 B CN 107152552B CN 201710549665 A CN201710549665 A CN 201710549665A CN 107152552 B CN107152552 B CN 107152552B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a multi-stage action electromagnetic valve and a pipeline system, and relates to the technical field of electromagnetic valves. The multi-stage action solenoid valve comprises a valve body assembly, a valve core assembly and a pilot valve assembly. The pilot valve assembly is embedded in the valve body assembly, and the valve core assembly is arranged at one end of the pilot valve assembly. The pilot valve assembly comprises a first valve body, a valve rod and a sealing piece, wherein the first valve body comprises a pilot valve cavity, the valve rod is embedded in the pilot valve cavity, and a first spring is arranged between the sealing piece and the valve rod. The valve core assembly comprises an iron core and a shielding pipe, the iron core is arranged in a cavity of the shielding pipe, a second spring is arranged between the iron core and the shielding pipe, and the iron core can drive the valve rod to move along the axis of the shielding pipe so that the sealing piece moves in the valve cavity of the pilot valve and is used for opening or closing the second opening end of the first valve body. Reasonable in design, simple structure can adopt low-power electromagnetic drive device, drive heavy-calibre valve, have reduced system load power and installation, maintenance space.
Description
Technical Field
The invention relates to the technical field of electromagnetic valves, in particular to a multi-stage action electromagnetic valve and a pipeline system.
Background
The existing driving device of the large-caliber electromagnetic valve has larger load power and larger volume, and has poor control on pipeline medium and slow action.
When the electrical element fails, the solenoid valve fails and is inconvenient to maintain.
In summary, how to provide an electromagnetic driving device capable of driving a large-caliber valve and adopting low power is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a multistage action electromagnetic valve which is reasonable in design and simple in structure, can drive a large-caliber valve by adopting a low-power electromagnetic driving device, reduces the system load power to the greatest extent and reduces the installation and maintenance space.
The invention also aims to provide a pipeline system which has the beneficial effects of the multi-stage action electromagnetic valve.
The embodiment of the invention is realized in the following way:
based on the above object, the embodiment of the invention provides a multi-stage action electromagnetic valve, which comprises a valve body assembly, a valve core assembly and a pilot valve assembly, wherein the pilot valve assembly is embedded in a first accommodating cavity at the top end of the valve body assembly, and the valve core assembly is arranged at one end of the pilot valve assembly far away from the valve body assembly;
the pilot valve assembly comprises a first valve body, a valve rod and a sealing piece, wherein the first valve body comprises a pilot valve cavity with a first opening end and a second opening end, the valve rod is embedded in the pilot valve cavity and extends out of the first opening end, the sealing piece is arranged at the position, close to the second opening end, of the valve rod, and a first spring is arranged between the sealing piece and the valve rod;
the valve core assembly comprises an iron core and a shielding pipe, the iron core is arranged in a cavity of the shielding pipe, a first end of the iron core is fixedly connected with one end of the valve rod, which is far away from the first valve body, a second end of the iron core is fixedly connected with the top of the shielding pipe, a second spring is arranged at the top of the shielding pipe, the iron core can drive the valve rod to move along the axis of the shielding pipe, and the valve rod can drive the sealing element to move in the valve cavity of the pilot valve and is used for opening or closing the second opening end of the first valve body.
In addition, the multi-stage action electromagnetic valve provided by the embodiment of the invention can also have the following additional technical characteristics:
in an alternative embodiment of the present invention, the valve body assembly includes a valve main body, a main valve cover, a piston assembly and a third spring, wherein the valve main body is fixedly connected with the main valve cover, the piston assembly is embedded in the main valve cover and encloses a second accommodating cavity with the main valve cover, the third spring is located in the second accommodating cavity, and two ends of the third spring are respectively and fixedly arranged at the tops of the piston assembly and the main valve cover;
the valve body and the main valve cover are provided with a first diversion hole and a second diversion hole, the first diversion hole and the second diversion hole are respectively arranged on two sides of the piston assembly, the first diversion hole of the valve body is communicated with the first diversion hole of the main valve cover, and the second diversion hole of the valve body is communicated with the second diversion hole of the main valve cover;
the first diversion hole is communicated with the first accommodating cavity, and the second diversion hole is communicated with the second accommodating cavity.
In an alternative embodiment of the present invention, the valve body assembly further includes a slave valve cover, the slave valve cover is provided with a penetrating hole, a circumferential side wall of the slave valve cover is provided with a first embedded groove, and the slave valve cover is fixedly arranged at the top of the main valve cover and enables the valve rod to penetrate through the penetrating hole.
In an alternative embodiment of the present invention, the multi-stage action solenoid valve further includes a manual device assembly disposed in the first embedded groove, the manual device assembly including a packing, a pressing member, and a manual member;
the circumference of valve rod be provided with wear to establish hole assorted boss, manual piece inlay locate first inlay establish the groove and can with boss assorted, packing with compress tightly the piece in proper order the cover locate manual piece just set up in first inlay establish the inslot, compress tightly the piece be used for with the packing compresses tightly.
In an alternative embodiment of the present invention, a connecting portion and a clamping groove are disposed at an end of the valve rod, which is far away from the first valve body, a matching cavity and a clamping portion are disposed at a first end of the iron core, the connecting portion can be disposed in the matching cavity, and the clamping portion can be clamped in the clamping groove to fixedly connect the iron core with the valve rod.
In an alternative embodiment of the present invention, the multi-stage action solenoid valve further includes a solenoid assembly disposed outside the valve core assembly;
the electromagnetic assembly comprises a coil, a magnetic conduction plate and a shell assembly, wherein the coil is sleeved on the outer side of the shielding pipe, the magnetic conduction plate is fixedly arranged at the end part of the shielding pipe, and the shell assembly is sleeved on the outer side of the coil and the magnetic conduction plate.
In an alternative embodiment of the present invention, a fixing hole is provided at an end of the shielding pipe away from the valve rod, the magnetic conductive plate is provided with a second embedded groove matched with the shielding pipe, the shielding pipe can be embedded in the second embedded groove, and the magnetic conductive plate is fixedly connected with the shielding pipe through a fastener.
In an alternative embodiment of the present invention, the housing assembly includes a housing body, an end cap, and a wire holder assembly;
the shell body cover is located the coil with the outside of shielding pipe, the first end of shell body with shielding pipe sealing connection, the second end of shell body is provided with the internal thread, the end cover be provided with internal thread assorted external screw thread, the end cover with shell body threaded connection.
In an alternative embodiment of the present invention, the wire holder assembly includes a wire holder body, a wire holder nut, a seal ring, and a grounding screw;
the wire holder body is fixed set up in the shell body, the sealing washer inlays to be located in the wire holder body, the binding nut with wire holder body threaded connection just is used for with the sealing washer compresses tightly, ground screw fixed set up in the side surface of shell body.
The embodiment of the invention also provides a pipeline system which comprises the multi-stage action electromagnetic valve.
The beneficial effects of the embodiment of the invention are as follows: reasonable in design, simple structure can adopt low-power electromagnetic drive device, drive heavy-calibre valve, the drive arrangement required power of solenoid valve has furthest been reduced to the volume of whole valve has been reduced greatly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a multi-stage solenoid valve according to embodiment 1 of the present invention;
FIG. 2 is a schematic view of a view of the valve body assembly of FIG. 1;
FIG. 3 is an enlarged view of a portion of III in FIG. 2;
FIG. 4 is a schematic view of a view of the pilot valve assembly of FIG. 1;
fig. 5 is an enlarged view of part of v in fig. 1;
FIG. 6 is a schematic view of a view of the valve cartridge assembly of FIG. 1;
fig. 7 is a schematic diagram of an angle of view of the electromagnetic assembly of fig. 1.
Icon: 100-a multi-stage action electromagnetic valve; 10-a valve body assembly; 11-a valve body; 113-a first deflector aperture; 115-a second deflector aperture; 13-a main valve cover; 132-a first accommodation chamber; 14-a piston assembly; 145-a second receiving cavity; 16-a third spring; 17-a slave valve cover; 172-perforating holes; a 20-pilot valve assembly; 22-a first valve body; 223-a first open end; 224-a second open end; 226—pilot valve cavity; 23-valve stem; 232-boss; 234-connection; 236-a clamping groove; 25-a first spring; 26-a seal; 28-sealing gasket; 30-a valve core assembly; 32-iron core; 324-mating cavity; 326-a clamping part; 34-shielding the tube; 36-a second spring; 40-a manual device assembly; 41-packing; 42-compressing piece; 45-a manual piece; 50-an electromagnetic assembly; 52-coil; 54-a magnetic conductive plate; 542-second embedded groove; 56-a housing assembly; 562-a shell body; 564-end caps; 568-a wire holder assembly; 5682-wire holder body; 5684-a terminal nut; 5686-a sealing ring; 5688-grounding screw.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.
Wherein fig. 1 to 7 correspond to embodiment 1 of the present invention, a technical solution of the embodiment of the present invention will be described in detail with reference to the accompanying drawings.
Embodiment 1
As shown in fig. 1, the multi-stage action solenoid valve 100 according to embodiment 1 of the present invention includes a valve body assembly 10, a pilot valve assembly 20, a valve core assembly 30, a manual device assembly 40 and an electromagnetic assembly 50, wherein the pilot valve assembly 20 is embedded in the top end of the valve body assembly 10, the valve core assembly 30 is disposed at one end of the pilot valve assembly 20 far away from the valve body assembly 10, the manual device assembly 40 is disposed on the valve rod 23, and the electromagnetic assembly 50 is disposed outside the valve core assembly 30.
The specific structure and the correspondence relationship between the respective components of the multi-stage solenoid valve 100 will be described in detail.
First, as shown in fig. 2, describing the valve body assembly 10 in detail, the valve body assembly 10 includes a valve main body 11, a main valve cover 13, a piston assembly 14, a third spring 16 and a slave valve cover 17, wherein the valve main body 11 is fixedly connected with the main valve cover 13, a first accommodating cavity 132 is provided at the top of the main valve cover 13, the piston assembly 14 is embedded in the main valve cover 13, the piston assembly 14 and the main valve cover 13 enclose a second accommodating cavity 145, the third spring 16 is located in the second accommodating cavity 145, one end of the third spring 16 is fixedly disposed at the top of the main valve cover 13, and the other end is fixedly disposed at the side wall of the piston assembly 14.
Optionally, a first sealing groove for setting a sealing gasket is provided at one end of the piston assembly 14 far away from the third spring 16, a second sealing groove for setting a Y-ring is provided circumferentially on a side surface of the piston assembly 14, and the second accommodating chamber 145 is sealed with the main flow channel of the valve main body 11 by setting the sealing gasket in the first sealing groove and the Y-ring in the second sealing groove.
Alternatively, the valve main body 11 and the main valve cover 13 are provided with a first pilot hole 113 and a second pilot hole 115, the first pilot hole 113 and the second pilot hole 115 are respectively provided at both sides of the piston assembly 14, the first pilot hole 113 of the valve main body 11 and the first pilot hole 113 of the main valve cover 13 are mutually communicated, the second pilot hole 115 of the valve main body 11 and the second pilot hole 115 of the main valve cover 13 are mutually communicated, and in embodiment 1 of the present invention, the first pilot hole 113 is communicated with the first accommodating chamber 132 on the main valve cover 13, and the second pilot hole 115 is communicated with the second accommodating chamber 145.
As shown in fig. 3, alternatively, the slave valve cover 17 is disposed at one end of the main valve cover 13 far from the valve main body 11, the slave valve cover 17 is fixedly connected with the main valve cover 13 through bolts, the slave valve cover 17 is provided with a penetrating hole 172, a first embedded groove is disposed on the circumferential side wall of the slave valve cover 17, the slave valve cover 17 is fixedly disposed at the top of the main valve cover 13 and enables the valve rod 23 to penetrate through the penetrating hole 172, and an external thread is disposed on the outer surface of the slave valve cover 17 and is used for being in threaded connection with the shielding pipe 34.
Next, describing the pilot valve assembly 20, as shown in fig. 4, the pilot valve assembly 20 includes a first valve body 22, a valve rod 23, a sealing member 26, and a sealing gasket 28, wherein the sealing gasket 28 includes a pilot valve sealing gasket and a pilot piston ring, a pilot valve sealing groove is provided on a lower end surface of the first valve body 22, a pilot valve groove is provided on a circumferential outer surface of the first valve body 22, and in embodiment 1 of the present invention, the pilot valve sealing gasket is roll-pressed in the pilot valve sealing groove, and the pilot piston ring is embedded in the pilot valve groove.
Alternatively, the first valve body 22 includes a pilot valve cavity 226 having a first open end 223 and a second open end 224, the valve stem 23 is embedded in the pilot valve cavity 226 and the valve stem 23 can protrude from the first open end 223, the seal 26 is disposed on the valve stem 23 near the second open end 224, and the valve stem 23 is sealed or opened to the second open end 224 of the first valve body 22 by the seal 26.
Optionally, a third embedded groove is further formed at one end of the valve rod 23, where the sealing element 26 is disposed, and the third embedded groove is used for disposing the first spring 25, and the first spring 25 is located between the sealing element 26 and the valve rod 23, so as to reset the sealing element 26 to seal the second open end 224.
Optionally, the circumference of the valve rod 23 is provided with a boss 232 that can be matched with the through hole 172 of the valve cover 17, the boss 232 is used for being matched with one end of the through hole 172 of the valve cover 17 far away from the first valve body 22, and one end of the valve rod 23 far away from the first valve body 22 is further provided with a connecting portion 234 and a clamping groove 236, the connecting portion 234 is used for being arranged in the iron core 32 of the valve core assembly 30, and the clamping groove 236 is used for being embedded with a clamping portion 326 of the iron core 32, so that the iron core 32 is fixedly connected with the valve rod 23.
Then, referring to the manual apparatus assembly 40 in detail, as shown in fig. 5, the manual apparatus assembly 40 is configured to be disposed in a first insertion groove of the slave valve cover 17, the manual apparatus assembly 40 includes a packing 41, a pressing member 42, and a manual member 45, and when assembled, the manual member 45 is disposed in the first insertion groove and can be matched with the boss 232, the manual member 45 is provided with a matching portion matching with the boss 232 of the valve stem 23, the matching portion is located at one side of the boss 232 near the first valve body 22, and the packing 41 and the pressing member 42 are sequentially sleeved with the manual member 45 and are all disposed in the first insertion groove, and the packing 41 is pressed and fixed by screwing the pressing member 42.
In embodiment 1 of the present invention, the pressing member 42 is optionally a pressing nut, and the pressing nut is connected with the slave valve cover 17 by a screw thread manner to perform the function of pressing the packing 41, and the manual lever passes through the pressing nut and the packing 41 and contacts the boss 232 on the valve rod 23, and since the manual lever is provided with a notch matching with the boss 232, the manual lever can be rotated to perform the function of controlling the valve rod 23 to move up and down, thereby achieving the function of opening and closing the pilot valve.
Then, referring to the valve core assembly 30 in detail, as shown in fig. 6, the valve core assembly 30 includes an iron core 32, a shielding tube 34 and a second spring 36, wherein the shielding tube 34 is disposed at one end of the slave valve cover 17 far away from the main valve cover 13, the shielding tube 34 is provided with an internal thread and is in threaded connection with an external thread on the slave valve cover 17, a cavity for accommodating the iron core 32 and the second spring 36 is disposed in the shielding tube 34, and one end of the shielding tube 34 far away from the internal thread is provided with a fixing hole.
Optionally, the iron core 32 is disposed in the cavity of the shielding tube 34, and the iron core 32 includes a first end and a second end opposite to each other, where the first end is fixedly connected to the end of the valve rod 23 away from the first valve body 22, and the second end is disposed with a second spring 36 on top of the shielding tube 34, and the second spring 36 plays a role of resetting the iron core 32.
Specifically, the first end of the iron core 32 is provided with a mating cavity 324 and a clamping portion 326, the connecting portion 234 of the valve rod 23 can be disposed in the mating cavity 324, and the clamping portion 326 of the iron core 32 can be clamped in the clamping groove 236 of the valve rod 23, so that the iron core 32 is fixedly connected with the valve rod 23.
When the plunger 32 moves within the cavity of the shield tube 34, the plunger 32 can move the valve stem 23 along the axis of the shield tube 34, and at the same time, the valve stem 23 can move the seal 26 within the pilot valve cavity 226, thereby opening or closing the second open end 224 of the first valve body 22.
Finally, solenoid assembly 50 is described in detail, and solenoid assembly 50 is disposed externally of spool assembly 30 as shown in FIG. 7, and is described in detail below.
The electromagnetic assembly 50 includes a coil 52, a magnetic conductive plate 54 and a housing assembly 56, wherein the coil 52 is sleeved outside the shielding tube 34, the magnetic conductive plate 54 is fixedly arranged at one end of the shielding tube 34 far away from the slave valve cover 17, and the housing assembly 56 is sleeved outside the coil 52 and the magnetic conductive plate 54.
Optionally, the magnetic conductive plate 54 is provided with a second embedded groove 542 matched with the shielding tube 34, and the shielding tube 34 can be embedded in the second embedded groove 542, and the magnetic conductive plate 54 and the shielding tube 34 are fixedly connected by a fastener, in embodiment 1 of the present invention, a bolt is used to pass through the center of the magnetic conductive plate 54 and connect with the shielding tube 34.
Optionally, the housing assembly 56 includes a housing body 562, an end cap 564, and a wire holder assembly 568, where the housing body 562 is sleeved on the outer side of the coil 52 and the shielding tube 34, the housing body 562 includes a first end and a second end opposite to each other, where the first end is in sealing connection with the shielding tube 34, the second end is provided with an internal thread, the end cap 564 is provided with an external thread matched with the internal thread, and the end cap 564 is in threaded connection with the housing body 562, i.e. the end cap 564 is mounted on the topmost end of the housing body 562 and is fixedly connected with the housing body 562 by adopting a thread.
Optionally, the wire holder assembly 568 includes a wire holder body 5682, a wire holder nut 5684, a seal ring 5686, and a ground screw 5688. The wire holder body 5682 is fixedly arranged on the shell body 562, the welding arrangement is adopted here, the sealing ring 5686 is embedded in the wire holder body 5682, the wire nut 5684 is in threaded connection with the wire holder body 5682 and is used for pressing the sealing ring 5686, the effect of pressing a sealed cable is achieved, and the grounding screw 5688 is fixedly arranged on the side surface of the shell body 562.
The working principle of the multi-stage action solenoid valve 100 according to embodiment 1 of the present invention is as follows:
when the solenoid valve is de-energized, the piston assembly 14 is compressed against the sealing surface of the valve body 11 by the third spring 16, and the solenoid valve is in a closed state.
When the solenoid valve is energized, the coil 52 generates electromagnetic force, the iron core 32 is pulled to move upwards to close the shielding pipe 34, and the valve rod 23 is pulled to move upwards at the same time, at the moment, medium in the upper cavity of the first valve body 22 of the pilot valve assembly 20 is rapidly discharged from the valve port, the pilot valve assembly 20 moves upwards to be opened, at the moment, medium in the upper cavity of the piston assembly 14 is discharged from the first pilot hole 113, the piston assembly 14 is floated upwards under the action of medium pressure difference, and the solenoid valve is opened.
When the solenoid valve is de-energized, the electromagnetic force is lost, the iron core 32 moves downward under the force of the second spring 36 and the dead weight to close the first valve body 22, the pressure in the upper cavity of the piston assembly 14 rises rapidly, the piston assembly 14 moves downward under the force of the medium pressure difference and the third spring 16, and the solenoid valve is closed.
The solenoid valve can be switched on and off once after the power is turned on and off once.
The multi-stage action solenoid valve 100 provided in embodiment 1 of the present invention has the following advantages:
the electromagnetic valve has reasonable design and simple structure, can adopt a low-power electromagnetic driving device to drive a large-caliber valve, and furthest reduces the power required by the driving device of the electromagnetic valve, thereby greatly reducing the volume of the whole valve; the multi-stage action electromagnetic valve 100 has a manual operation function, breaks through the traditional structural mode, adopts a structure combining pilot type and step-by-step direct-acting type, realizes power minimization, drives the maximization of the caliber of a valve, realizes the connection and disconnection of a pipeline medium, reduces the system load power and reduces the installation and maintenance space.
Embodiment 2
Embodiment 2 of the present invention provides a piping system including the multi-stage action solenoid valve 100 of embodiment 1 described above.
Because the existing fuel oil conveying pipeline has negative pressure, after the multistage action electromagnetic valve 100 is configured in a pipeline system, the requirement of a user can be met, and a small-power electromagnetic driving device can be used for driving a large-caliber valve by adopting a mode of combining a pilot type electromagnetic driving device and a step-by-step direct-acting electromagnetic driving device, so that the connection and disconnection of a pipeline medium are realized, the load power of the system is reduced, and the installation and maintenance space is reduced.
It should be noted that the features of the embodiments of the present invention may be combined with each other without collision.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The multi-stage action electromagnetic valve is characterized by comprising a valve body assembly, a valve core assembly and a pilot valve assembly, wherein the pilot valve assembly is embedded in a first accommodating cavity at the top end of the valve body assembly, and the valve core assembly is arranged at one end, far away from the valve body assembly, of the pilot valve assembly;
the pilot valve assembly comprises a first valve body, a valve rod and a sealing piece, wherein the first valve body comprises a pilot valve cavity with a first opening end and a second opening end, the valve rod is embedded in the pilot valve cavity and extends out of the first opening end, the sealing piece is arranged at the position, close to the second opening end, of the valve rod, and a first spring is arranged between the sealing piece and the valve rod;
the valve core assembly comprises an iron core and a shielding pipe, the iron core is arranged in a cavity of the shielding pipe, a first end of the iron core is fixedly connected with one end of the valve rod, which is far away from the first valve body, a second end of the iron core is fixedly connected with the top of the shielding pipe, a second spring is arranged at the top of the shielding pipe, the iron core can drive the valve rod to move along the axis of the shielding pipe, and the valve rod can drive the sealing element to move in the valve cavity of the pilot valve and is used for opening or closing the second opening end of the first valve body.
2. The multi-stage action electromagnetic valve according to claim 1, wherein the valve body assembly comprises a valve main body, a main valve cover, a piston assembly and a third spring, the valve main body is fixedly connected with the main valve cover, the piston assembly is embedded in the main valve cover and enclosed with the main valve cover to form a second accommodating cavity, the third spring is positioned in the second accommodating cavity, and two ends of the third spring are respectively fixedly arranged at the tops of the piston assembly and the main valve cover;
the valve body and the main valve cover are provided with a first diversion hole and a second diversion hole, the first diversion hole and the second diversion hole are respectively arranged on two sides of the piston assembly, the first diversion hole of the valve body is communicated with the first diversion hole of the main valve cover, and the second diversion hole of the valve body is communicated with the second diversion hole of the main valve cover;
the first diversion hole is communicated with the first accommodating cavity, and the second diversion hole is communicated with the second accommodating cavity.
3. The multi-stage action solenoid valve of claim 2, wherein the valve body assembly further comprises a slave valve cover provided with a through-hole therethrough, a circumferential side wall of the slave valve cover is provided with a first embedded groove, and the slave valve cover is fixedly disposed on top of the master valve cover and enables the valve stem to be inserted into the through-hole.
4. The multi-stage action solenoid valve of claim 3, further comprising a manual assembly disposed within the first recessed slot, the manual assembly comprising a filler, a hold-down member, and a manual member;
the circumference of valve rod be provided with wear to establish hole assorted boss, manual piece inlay locate first inlay establish the groove and can with boss assorted, packing with compress tightly the piece in proper order the cover locate manual piece just set up in first inlay establish the inslot, compress tightly the piece be used for with the packing compresses tightly.
5. The multi-stage action solenoid valve according to claim 1, wherein one end of the valve rod, which is far away from the first valve body, is provided with a connecting portion and a clamping groove, the first end of the iron core is provided with a mating cavity and a clamping portion, the connecting portion can be disposed in the mating cavity, and the clamping portion can be clamped in the clamping groove to fixedly connect the iron core with the valve rod.
6. The multi-stage action solenoid valve of claim 5, further comprising an electromagnetic assembly disposed externally of the spool assembly;
the electromagnetic assembly comprises a coil, a magnetic conduction plate and a shell assembly, wherein the coil is sleeved on the outer side of the shielding pipe, the magnetic conduction plate is fixedly arranged at the end part of the shielding pipe, and the shell assembly is sleeved on the outer side of the coil and the magnetic conduction plate.
7. The multi-stage action solenoid valve according to claim 6, wherein a fixing hole is provided at an end of the shielding pipe away from the valve rod, the magnetic conductive plate is provided with a second embedded groove matched with the shielding pipe, the shielding pipe can be embedded in the second embedded groove, and the magnetic conductive plate is fixedly connected with the shielding pipe through a fastener.
8. The multi-stage action solenoid valve of claim 6, wherein the housing assembly comprises a housing body, an end cap, and a wire holder assembly;
the shell body cover is located the coil with the outside of shielding pipe, the first end of shell body with shielding pipe sealing connection, the second end of shell body is provided with the internal thread, the end cover be provided with internal thread assorted external screw thread, the end cover with shell body threaded connection.
9. The multi-stage action solenoid valve of claim 8, wherein the wire holder assembly comprises a wire holder body, a wire holder nut, a seal ring, and a grounding screw;
the wire holder body is fixed set up in the shell body, the sealing washer inlays to be located in the wire holder body, the binding nut with wire holder body threaded connection just is used for with the sealing washer compresses tightly, ground screw fixed set up in the side surface of shell body.
10. A pipe system comprising a multi-stage action solenoid valve according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710549665.1A CN107152552B (en) | 2017-07-07 | 2017-07-07 | Multistage action electromagnetic valve and pipeline system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710549665.1A CN107152552B (en) | 2017-07-07 | 2017-07-07 | Multistage action electromagnetic valve and pipeline system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107152552A CN107152552A (en) | 2017-09-12 |
| CN107152552B true CN107152552B (en) | 2023-09-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110486479B (en) * | 2019-08-28 | 2020-12-18 | 西安航天动力研究所 | Large-flow three-stage pilot-operated electromagnetic valve |
| CN114321061B (en) * | 2021-12-17 | 2024-08-23 | 威海威农科技发展有限公司 | Electric control hydraulic proportional pressure reducing valve |
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| US4503887A (en) * | 1982-01-19 | 1985-03-12 | Automatic Switch Company | Pilot-operated dual flow rate valve |
| WO2006132120A1 (en) * | 2005-06-10 | 2006-12-14 | Kazuhiro Honda | Pilot solenoid valve |
| CN203940078U (en) * | 2014-05-12 | 2014-11-12 | 依格流体技术（嘉兴）有限公司 | A kind of isolated form piston guide type electromagnetic valve |
| CN204677862U (en) * | 2015-06-08 | 2015-09-30 | 广东美的暖通设备有限公司 | Solenoid valve and heat pump water heater |
| CN204985946U (en) * | 2015-09-25 | 2016-01-20 | 宁波开灵气动元件制造有限公司 | Novel guide's diaphragm formula normally open solenoid valve |
| CN206973022U (en) * | 2017-07-07 | 2018-02-06 | 鞍山电磁阀有限责任公司 | Multilevel action magnetic valve and pipe-line system |
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2017
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4503887A (en) * | 1982-01-19 | 1985-03-12 | Automatic Switch Company | Pilot-operated dual flow rate valve |
| WO2006132120A1 (en) * | 2005-06-10 | 2006-12-14 | Kazuhiro Honda | Pilot solenoid valve |
| CN203940078U (en) * | 2014-05-12 | 2014-11-12 | 依格流体技术（嘉兴）有限公司 | A kind of isolated form piston guide type electromagnetic valve |
| CN204677862U (en) * | 2015-06-08 | 2015-09-30 | 广东美的暖通设备有限公司 | Solenoid valve and heat pump water heater |
| CN204985946U (en) * | 2015-09-25 | 2016-01-20 | 宁波开灵气动元件制造有限公司 | Novel guide's diaphragm formula normally open solenoid valve |
| CN206973022U (en) * | 2017-07-07 | 2018-02-06 | 鞍山电磁阀有限责任公司 | Multilevel action magnetic valve and pipe-line system |
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