CN112594416B - Self-holding type double-valve-core electromagnetic switch valve and use method thereof - Google Patents

Self-holding type double-valve-core electromagnetic switch valve and use method thereof Download PDF

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Publication number
CN112594416B
CN112594416B CN202011412336.0A CN202011412336A CN112594416B CN 112594416 B CN112594416 B CN 112594416B CN 202011412336 A CN202011412336 A CN 202011412336A CN 112594416 B CN112594416 B CN 112594416B
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valve
valve body
body shell
armature
fixed iron
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CN112594416A (en
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姚静
段怡曼
杨帅
杨柳
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Yanshan University
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Yanshan University
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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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way 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
    • 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
    • F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
    • F16K31/082—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet using a electromagnet and a permanent magnet

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The invention provides a self-holding type double-valve-core electromagnetic switch valve which comprises a valve body mechanism, an electromagnetic mechanism and a valve core mechanism, wherein a valve body shell is fixedly connected through a set screw, a rubber sealing ring is connected with a second valve body shell, a valve sleeve is connected with the second valve body shell, a valve seat is connected with the second valve body shell, a stop iron is connected with a first valve body shell and the valve sleeve, a coil is connected with the valve sleeve and the stop iron, the coil is connected with a lead wire, the lead wire is led out from holes formed in the side surfaces of the valve sleeve and the valve body shell, a magnetism isolating ring is connected with the coil and the stop iron, a fixed iron core is connected with the stop iron and the magnetism isolating ring, a movable push rod is in sliding fit with the inner surface of the fixed iron core, two ends of a spring are respectively connected with the stop iron and the movable push rod, and the movable iron core is connected with the movable push rod in an interference mode. Compared with other electromagnetic switch valves, the electromagnetic switch valve has the advantages of low power consumption, low pressure drop, small volume, large flow, light weight and the like, and has important engineering practical significance.

Description

Self-holding type double-valve-core electromagnetic switch valve and use method thereof
Technical Field
The invention relates to the field of electromagnetic switch valves, in particular to a self-holding type double-valve-core electromagnetic switch valve.
Background
The electromagnetic switch valve is a hydraulic element which utilizes electromagnetism to control the on-off of an oil circuit in a system, and belongs to a control element. As a key element of the electro-hydraulic digital control technology, the electromagnetic switch valve has the advantages of miniaturization, quick response, simple structure and the like, and is generally popularized and applied in the technical field of digital hydraulic engineering.
At present, the existing electromagnetic switch valve usually adopts the power-on or power-off of a coil to control the opening or closing of a valve core, when the valve core is kept in an opening or closing state, the coil needs to be continuously powered on to enable a fixed iron to keep a corresponding electromagnetic force, the continuous power-on can not only increase the heating value of elements and a system and generate a large amount of energy consumption loss, but also easily generate faults such as coil fusing and the like, influences the service life of each element, and is not in accordance with the design principle of energy conservation and high efficiency.
The electromagnetic switch valve used in the fields of automobiles, motorcycles, aerospace and the like needs to meet the requirements of small volume, small pressure drop, large flow and the like, however, the existing electromagnetic switch valve is difficult to meet the use requirements of low pressure drop and large flow when the structural space is small in the actual use process. The existence of the above problems, which limit the industrial practical application of the electromagnetic switch valve, is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a self-holding type double-valve-core electromagnetic switch valve, which is mainly used for avoiding the large energy consumption loss generated when the electromagnetic switch valve is opened or closed for a long time and solving the problems that the electromagnetic switch valve is difficult to meet the use requirements of low pressure drop and large flow and the like when the structural space is smaller.
In order to achieve the above object, the present invention provides a self-holding type dual-spool electromagnetic switch valve, which comprises a valve body mechanism, an electromagnetic mechanism and a spool mechanism;
the valve body mechanism comprises a first valve body shell, a second valve body shell, a rubber sealing ring, a valve sleeve, a valve seat and a valve port, wherein the first valve body shell and the second valve body shell are fixedly connected together by means of a connecting piece, an oil inlet is formed in the upper end face of the first valve body shell, an oil outlet is formed in the lower end face of the second valve body shell, two symmetrically arranged cavities with the same structure are arranged between the lower end of the oil inlet and the upper end of the oil outlet, the two cavities are respectively communicated with the oil inlet and the oil outlet,
the rubber sealing ring is connected with the second upper end surface of the second valve body shell and the first inner side surface of the second valve body shell, the valve sleeve is connected with the third upper end surface of the second valve body shell and the second inner side surface of the second valve body shell, and the valve seat is connected with the third upper end surface of the second valve body shell and the inner surface of the valve sleeve;
the electromagnetic mechanism comprises a spring seat, a coil, a lead wire, a magnetism isolating ring and a fixed iron, wherein the spring seat is connected with the inner side surface of the first valve body shell and the upper end surface of the valve sleeve, the coil is connected with the inner surface of the valve sleeve and the lower end surface of the second spring seat, the coil is connected with the lead wire, the lead wire is led out from holes formed in the side surfaces of the valve sleeve and the valve body shell, the magnetism isolating ring is connected with the inner surface of the coil and the lower end surface of the second spring seat, and the fixed iron is connected with the lower end surface of the second spring seat and the inner surface of.
The valve core mechanism comprises a movable push rod, a spring and an armature, the movable push rod is in sliding fit with the inner surface of the fixed iron, two ends of the spring are respectively connected with the spring seat and the movable push rod, and the armature is connected with the movable push rod in an interference mode.
Preferably, internal threads are arranged inside the oil inlet and the oil outlet;
two mounting lugs are arranged on two sides of the outer surfaces of the first valve body shell and the second valve body shell, a threaded hole is formed in each mounting lug, the first valve body shell and the second valve body shell are fixedly connected through a set screw, and the set screw is located in the threaded holes of the mounting lugs.
Preferably, the inner diameters of the cavity of the first valve body shell and the cavity of the second valve body shell are equal, the center lines of the two cavities are located on the same straight line, the two cavities on the same side are combined to form a valve cavity, and the internal structures of the two valve cavities are completely the same and symmetrical.
Preferably, the electromagnetic mechanism, the valve core mechanism and the valve sleeve and the valve seat in the valve body mechanism are all provided with two groups, and one group is respectively arranged in the two valve cavities.
Preferably, the valve sleeve, the valve seat, the spring seat, the coil, the magnetism isolating ring, the fixed iron, the spring, the movable push rod and the armature are positioned on the same straight line.
Preferably, a sealing groove is arranged on the upper end surface of the second valve body shell, and the sealing groove is connected with the rubber sealing ring;
the rubber sealing ring is of a double-ring structure, and a first through hole and a second through hole of the rubber sealing ring are respectively positioned on the same straight line with the center lines of the left cavity and the right cavity of the sealing groove.
Preferably, the spring seat is of a cylindrical boss structure, and a medium circulation duct and a groove are formed in one end, close to the oil inlet, of the spring seat.
Preferably, the fixed iron is made of soft magnetic materials, and a medium flow channel groove is formed in one side, corresponding to the spring seat groove, of the inner wall surface of the fixed iron;
the armature is a permanent magnet, a circular groove is formed in the center of the upper end face of the permanent magnet, and a chamfer is formed in the lower end face of the permanent magnet.
Preferably, the valve port is a conical valve port, the cone angle is 60-180 degrees, the opening degree of the valve port is 2-2.5mm, and the aperture is 5-7 mm.
Preferably, the invention also provides a use method of the self-holding type double-spool electromagnetic switch valve, which comprises the following steps:
s1, when the valve is at the initial position, the armature does not move, the valve port is in a closed state, and the oil inlet and the oil outlet are in an unconnected state;
s2, an external control power supply is started, a generated electric signal is connected into a coil through a lead, a positive current + I passes through the coil, an electromagnet correspondingly generates a certain electromagnetic force, a fixed iron is quickly magnetized, an armature is opposite to a magnetic pole near the fixed iron after the positive current + I is introduced, a magnetic line of force generated by an armature magnetic field passes through the fixed iron, the electromagnetic force generated between the fixed iron and the armature is larger than resistance, the resistance is the sum of spring force and hydraulic force, the armature is quickly started, an oil inlet is communicated with an oil outlet, a working fluid medium flows in from the oil inlet, reaches a valve port position through a groove in the inner wall surface of a spring seat of each cavity and a groove in the wall surface of the fixed iron respectively, and flows out from the oil outlet;
s3, then, the external control power supply is closed, the electric signal is cut off, the coil is powered off, at the valve core opening position before the control power supply is closed, the magnetic line of force of the magnetic field generated by the armature still passes through the fixed iron, the electromagnetic force generated between the fixed iron and the armature is larger than the resistance, the armature keeps the opening state, the oil inlet is communicated with the oil outlet, the working fluid medium flows in from the oil inlet, reaches the valve port position through the grooves of the inner wall surfaces of the spring seats of the two cavities and the grooves of the wall surfaces of the fixed;
s4, an external control power supply is started, an electric signal is connected into a coil through a lead, a reverse current-I is introduced into the coil at the moment, an electromagnet correspondingly generates a certain electromagnetic force, a fixed iron is quickly magnetized, an armature is the same as a magnetic pole close to the fixed iron after the forward current + I is introduced, the fixed iron and the armature are mutually repelled, the electromagnetic force generated between the fixed iron and the armature is smaller than resistance, the armature is quickly closed, an oil inlet is not communicated with an oil outlet, and a working fluid medium cannot pass through the valve body;
s5, the external control power supply is closed again, the electric signal is disconnected, the coil is powered off, the magnetic force of the fixed iron and the armature is still in a mutually exclusive state at the valve core closing position before the control power supply is closed, the electromagnetic force generated between the fixed iron and the armature is smaller than resistance, the armature is kept in a closing state, the oil inlet is not communicated with the oil outlet, and a working fluid medium cannot pass through the valve body;
s6, repeating the above steps S1-S5, the continuous opening/closing and the holding open/closed state of the electromagnetic opening/closing valve can be repeated.
Compared with the prior art, the invention has the advantages that:
1. compared with other electromagnetic switch valves, the self-holding type double-valve-core electromagnetic switch valve has the advantages of low power consumption, low pressure drop, small volume, large flow, light weight and the like.
2. According to the invention, through the matching use and structural design of the permanent magnet and the soft magnet, the valve core is opened or closed when the coil is electrified, and the valve core can still keep the original opening or closing state when the coil is not electrified, so that the energy consumption loss is solved at the source, and the heating phenomenon of elements and systems is effectively avoided.
3. According to the invention, through the structural design and innovation of the double valve cores, the electromagnetic switch valve can pass larger flow while keeping lower pressure drop under the condition of unchanged original space volume, and the application field of the electromagnetic switch valve is widened.
4. The design of the invention can simultaneously meet the design principle of energy saving and high efficiency, and has important engineering practical significance.
Drawings
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the overall cross section and the overall structure of a self-holding type double-spool electromagnetic switch valve of the present invention;
FIG. 2 is a schematic diagram of the overall structure and the overall cross section of the first valve body housing of the self-holding dual-spool electromagnetic switch valve according to the present invention;
FIG. 3 is a schematic diagram of the overall structure and the overall cross section of the second valve body housing of the self-holding dual-spool electromagnetic switch valve according to the present invention;
FIG. 4 is a schematic diagram of the overall structure and the overall cross section of a spring seat in a self-holding double-spool electromagnetic switch valve according to the present invention;
FIG. 5 is a schematic diagram of the overall structure and the overall cross section of a fixed iron in the self-holding dual-spool electromagnetic switch valve according to the present invention;
FIG. 6 is a schematic diagram of the overall structure of a rubber sealing ring in a self-holding double-spool electromagnetic switch valve according to the present invention;
FIG. 7 is a schematic diagram of the working principle of the cooperation of a fixed iron and an armature of one embodiment in the self-holding double-spool electromagnetic switch valve;
FIG. 8 is a diagram showing simulation results of the working principle of the use of the fixed iron and the armature in cooperation with one embodiment of the self-holding double-spool electromagnetic switch valve of the present invention;
FIG. 9 is a graph showing the relationship between the structural aperture of the spherical valve port and the change of the opening degree of the valve port according to an embodiment of the present invention;
FIG. 10 is a graph showing the relationship between the structural aperture of the conical valve port and the change of the opening degree of the valve port according to an embodiment of the present invention;
FIG. 11 is a diagram illustrating the result of a working principle verification simulation of an embodiment of a self-holding dual-spool electromagnetic switch valve according to the present invention;
in the drawings, the main reference numerals are as follows:
a first valve body housing 1, an oil inlet 101, a first valve body housing left side cavity 102, a first valve body housing right side cavity 103, a first valve body housing mounting lug 104, a threaded through hole 105, a first valve body housing upper end surface 106, a first valve body housing inner side surface 107, a spring seat 2, a spring seat second lower end surface 201, a spring seat inner wall surface groove 202, a valve sleeve 3, a coil 4, a magnet isolating pipe 5, a fixed iron 6, a fixed iron wall surface groove 601, a fixed iron inner surface 602, a lead wire 7, a rubber seal ring 8, a first through hole 801, a second through hole 802, a valve seat 9, a spring 10, a movable push rod 11, an armature 12, a second valve body housing 13, an oil outlet 131, a second valve body housing second inner side surface 132, a second valve body housing first inner side surface 133, a second valve body housing left side cavity 134, a second valve body housing right side cavity 135, a second valve body housing second upper end surface 136, a second valve body housing lower end surface 137, second valve body housing third upper end 138, second valve body housing mounting lug 139, seal groove 1311, seal groove left cavity 1313, seal groove right cavity 1310, threaded hole 1312, valve port 14, set screw 15.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The invention provides a self-holding type double-valve-core electromagnetic switch valve, which comprises a valve body mechanism, an electromagnetic mechanism and a valve core mechanism, as shown in figure 1.
As shown in fig. 1, the valve body mechanism includes a first valve body housing 1, a second valve body housing 13, a set screw 15, a rubber seal 8, a valve sleeve 3, a valve seat 9, and a valve port 14. As shown in fig. 2, the first valve body housing includes an oil inlet 101, a first valve body housing left cavity 102, a first valve body housing right cavity 103, a first valve body housing mounting lug 104, a threaded through hole 105, a first valve body housing upper end surface 106, and a first valve body housing inner side surface 107; as shown in fig. 3, the second body housing comprises an oil outlet 131, a second body housing second inner side 132, a second body housing first inner side 133, a second body housing left side cavity 134, a second body housing right cavity 135, a second body housing second upper end 136, a second body housing lower end 137, a second body housing third upper end 138, a second body housing mounting lug 139, a sealing groove 1311, a threaded bore 1310, a sealing groove left side cavity 1313, and a sealing groove right side cavity; as shown in fig. 6, the rubber seal includes a first through hole 801 and a second through hole 802.
An oil inlet 101 is formed in the upper end surface 106 of the first valve body shell, an internal thread is formed in the oil inlet 101, the lower end of the oil inlet 101 is communicated with two identical and symmetrical first valve body shell left cavity 102 and first valve body shell right cavity 103, mounting lugs 104 are arranged on two sides of the outer surface of the first valve body shell, and threaded through holes 105 are formed in the mounting lugs.
An oil outlet 131 is formed in the lower end face 137 of the second valve body outer shell, internal threads are formed in the oil outlet 131, the upper end of the oil outlet 131 is communicated with a left cavity 134 and a right cavity 135 of the second valve body outer shell which are identical and symmetrical, mounting lugs 139 are formed in two sides of the outer surface of the second valve body outer shell, and threaded holes 1312 are formed in the mounting lugs.
The first valve body housing 1 is fixedly connected with the second valve body housing 2 through a set screw 15, the set screw 15 is positioned in the threaded through hole 105 and the threaded hole 1312, the rubber sealing ring 8 is connected with the second upper end surface 136 of the second valve body housing and the first inner side surface 133 of the second valve body housing, the valve sleeve 3 is connected with the third upper end surface 138 of the second valve body housing and the second inner side surface 132 of the second valve body housing, and the valve seat 9 is connected with the third upper end surface 138 of the second valve body housing and the inner surface of the valve sleeve 3.
As shown in fig. 1, the electromagnetic mechanism includes a spring seat 2, a coil 4, a lead wire 7, a magnetism isolating ring 5, and a fixed iron 6. As shown in fig. 4, the spring seat includes a spring seat second lower end surface 201 and a spring seat inner wall surface recess 202. As shown in fig. 5, the stator includes a stator wall recess 601 and a stator inner surface 602.
The spring seat 2 is connected with the inner side surface 107 of the first valve body shell and the upper end surface of the valve sleeve 3, the coil 4 is connected with the inner surface of the valve sleeve 3 and the second lower end surface 201 of the spring seat, the coil 4 is connected with the lead 7, the lead 7 is led out from holes formed in the side surfaces of the valve sleeve 3 and the first valve body shell 1, the magnetism isolating ring 5 is connected with the inner surface of the coil 4 and the second lower end surface 201 of the spring seat, and the fixed iron 6 is connected with the second lower end surface 201 of the spring seat and the inner surface of the magnetism isolating ring 5.
As shown in fig. 1, the valve core mechanism includes a moving push rod 11, a spring 10, and an armature 12. The movable push rod 11 is in sliding fit with the inner surface 602 of the fixed iron, two ends of the spring 10 are respectively connected with the spring seat 2 and the movable push rod 11, and the armature 12 is connected with the movable push rod 11 in an interference manner.
In the embodiment, as shown in fig. 1, the valve sleeve 3, the valve seat 9, the spring seat 2, the coil 4, the magnetism isolating ring 5, the fixed iron 6, the spring 10, the movable push rod 11, the armature 12 and the valve port 14 are located on the same straight line.
As shown in fig. 6, the rubber sealing ring 8 has a double-ring structure, and the first through hole 801 and the second through hole 802 of the rubber sealing ring 8 are respectively aligned with the center lines of the left cavity 1313 and the right cavity 1310 of the sealing groove.
The working principle of the self-holding type double-spool electromagnetic switch valve of the invention is further described and verified by the following embodiments:
as shown in fig. 1, fig. 7 and fig. 8, the working process of the present invention includes an initial state, an opening process, an opening state, a closing process and a closing state, and the working principle of this embodiment is described as follows:
initial state: in the initial position, the armature 12 is in contact with the valve seat 9, the armature 12 does not move, i.e., the valve element is closed, and the oil inlet 101 and the oil outlet 131 are not communicated.
The starting process comprises the following steps: when an external control power supply is started, a generated electric signal is connected into the coil 4 through the lead 7, a forward current + I passes through the coil 4, the electromagnet correspondingly generates a certain electromagnetic force, the fixed iron 6 is quickly magnetized, the armature 12 is made of a permanent magnet material, therefore, a magnetic field always exists in the armature 12, the magnetic pole of the armature 12 close to the fixed iron 6 with the forward current + I is opposite in side, magnetic lines of force generated by the magnetic field of the armature 12 pass through the fixed iron 6, the electromagnetic force generated between the fixed iron 6 and the armature 12 is larger than resistance, the resistance is the sum of spring force and hydraulic force, the armature 12 is quickly opened, the oil inlet 101 is communicated with the oil outlet 131, a working fluid medium flows in from the oil inlet 101, reaches the position of the valve port 14 through the spring seat groove 202 on the inner wall surface of the two cavities and the groove 601 on the wall surface of the fixed iron respectively, and flows out from the oil outlet 131.
Opening and keeping states: when an external control power supply is turned off, an electric signal connected into the coil 4 cannot be generated, no current passes through the coil 4, at the valve core opening position before the control power supply is turned off, magnetic lines of force generated by a magnetic field of the armature 12 still pass through the fixed iron 6, electromagnetic force generated between the fixed iron 6 and the armature 12 is larger than resistance, the armature 12 is kept in an opening state, the oil inlet 101 is communicated with the oil outlet 131, a working fluid medium flows in from the oil inlet 101, reaches the position of the valve port 14 through the groove 202 on the inner wall surface of the spring seat and the groove 601 on the wall surface of the fixed iron, and flows out from the oil outlet 131;
and (3) closing process: when the external control power supply is turned on again, the generated electric signal is connected into the coil 4 through the lead 7, the electromagnet correspondingly generates a certain electromagnetic force through the reverse current-I in the coil 4, the fixed iron 6 is quickly magnetized again, the armature 12 has the same magnetic pole with the fixed iron 6 with the reverse current-I, the fixed iron 6 and the armature 12 generate magnetic force lines which are mutually repelled, however, the electromagnetic force generated between the fixed iron 6 and the armature 12 is smaller than resistance, the armature 12 is quickly closed, the oil inlet 101 is not communicated with the oil outlet 131, and a working fluid medium cannot pass through the valve;
closing the holding state: when the external control power supply is closed again, an electric signal connected to the coil 4 cannot be generated, no current passes through the coil 4, magnetic lines of force generated by the fixed iron 6 and the armature 12 still repel each other at the valve core closing position before the control power supply is closed, electromagnetic force generated between the fixed iron 6 and the armature 12 is smaller than resistance, the armature 12 keeps a closing state, the oil inlet 101 is not communicated with the oil outlet 131, and a working fluid medium cannot pass through the valve.
Therefore, the electromagnetic switch valve completes one opening/closing action, and the continuous opening/closing and the opening/closing keeping state of the electromagnetic switch valve can be tested by repeating the process.
How to satisfy low pressure drop and large flow simultaneously by the self-holding double-spool electromagnetic switch valve of the invention is further described by combining the following embodiments:
in a specific embodiment, the specific conditions are pressure drop: less than or equal to 50Pa @0.36L/min, flow: 0.36L/min @30 ℃, working fluid medium density: rho 1000Kg/m3The flow coefficient: c. Cd＝0.62；
According to a flow calculation formula:
Figure BDA0002815331550000091
the total valve port area A is 35mm2Because the invention is designed into the self-holding type double-valve-core electromagnetic switch valve, the area A' of a single valve port can be 17.5mm2；
Further, the valve port 14 and the armature 12 are combined to form a valve port structure, and a spherical valve port and a conical valve port are selected for comparative analysis.
Aiming at the spherical valve port, different ball valve radiuses R are respectively selected: 1.5mm, 2mm, 2.5mm, 3mm, 4mm to obtain a variation curve of the valve port opening x and the aperture d, as shown in FIG. 9; similarly, the cone angles of different valve port structures are respectively selected: 60 degrees, 90 degrees, 150 degrees and 180 degrees to obtain a change curve of the valve port opening x and the aperture d, as shown in FIG. 10;
comparing fig. 9 and fig. 10, it is obvious that the parameter adjustment range of the conical valve port is large under the condition of meeting the flow performance requirement, therefore, the conical valve port is selected by the design of the invention.
The working principle of the self-holding double-spool electromagnetic switch valve is verified by combining the embodiment, and the specific verification process is as follows:
the feasibility of the principle is verified through electromagnetic field finite element simulation, a simulation model is built in Maxwell software and comprises a coil 4, a fixed iron 6 and an armature 12, forward current + I and reverse current-I are respectively introduced into the coil 4 in the simulation, and the simulation result is shown in fig. 11.
In a specific embodiment, a curve of the conical valve port shown in fig. 10 is selected to have a valve port structure with a cone angle of 60 °, a valve port opening of 2.5mm and a pore diameter of 5 mm;
using the fluid force calculation formula:
F＝πd2
it can be calculated that: the fluid force F is 0.00098N;
the resistance is the sum of fluid force and spring force, that is, Fz is F + Fs, wherein Fs is spring force, and the pre-tightening force F of the selected spring is0Is 0.3N;
the starting process comprises the following steps: in FIG. 11a, a point is selected, the point electromagnetic force FMWhen the resistance Fz is 0.42N and the resistance Fz is 0.3N, the electromagnetic force generated between the fixed iron and the armature is larger than the resistance, and the armature is rapidly opened and conforms to the working principle;
an opening state: in FIG. 11b, a point is selected, the point electromagnetic force FM1.98N, 0.9N of resistance Fz, the electromagnetic force generated between the fixed iron and the armature is greater than the resistance, and the armature keeps open and conforms to the working principle;
and (3) closing process: in FIG. 11c, a point is selected, the point electromagnetic force FMWhen the resistance Fz is 0.9N, the electromagnetic force generated between the fixed iron and the armature is less than the resistance, the armature is closed quickly, and the working principle is consistent;
and (3) closing state: in FIG. 11d, a point is selected, the point electromagnetic force FMThe resistance Fz is 0.3N, the electromagnetic force generated between the fixed iron and the armature is less than the resistance, and the armature keeps closed, which accords with the working principle;
in summary, under the designed working principle, the valve core can be opened or closed when the coil is electrified and can still keep the original opening or closing state when the coil is not electrified through the matching use and the structural design of the permanent magnet and the soft magnet.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims (9)

1. The utility model provides a self-sustaining formula double-valve core electromagnetic switch valve which characterized in that: the electromagnetic valve comprises a valve body mechanism, an electromagnetic mechanism and a valve core mechanism;
the valve body mechanism comprises a first valve body shell, a second valve body shell, a rubber sealing ring, a valve sleeve and a valve seat, the valve seat is provided with a valve port, the first valve body shell and the second valve body shell are fixedly connected together by means of a connecting piece, the upper end face of the first valve body shell is provided with an oil inlet, the lower end face of the second valve body shell is provided with an oil outlet, two symmetrically arranged cavities with the same structure are arranged between the lower end of the oil inlet and the upper end of the oil outlet, and the two cavities are respectively communicated with the oil inlet and the oil outlet;
the upper end surface of the second valve body shell supporting the rubber sealing ring is a second upper end surface, the upper end surface of the second valve body shell supporting the valve seat is a third upper end surface, the inner side surface of the second valve body shell connected with the rubber sealing ring is a first inner side surface, the inner side surface of the second valve body shell connected with the valve sleeve is a second inner side surface, the rubber sealing ring is connected with the second upper end surface of the second valve body shell and the first inner side surface of the second valve body shell, the valve sleeve is connected with the third upper end surface of the second valve body shell and the second inner side surface of the second valve body shell, and the valve seat is connected with the third upper end surface of the second valve body shell and the inner surface of the valve sleeve;
the electromagnetic mechanism comprises a spring seat, a coil, a lead wire, a magnetism isolating ring and a fixed iron, wherein the spring seat is connected with the inner side surface of the first valve body shell and the upper end surface of the valve sleeve;
the valve core mechanism comprises a movable push rod, a spring and an armature, the movable push rod is in sliding fit with the inner surface of the fixed iron, two ends of the spring are respectively connected with the spring seat and the movable push rod, and the armature is connected with the movable push rod in an interference mode.
2. The self-holding dual spool electromagnetic switch valve according to claim 1, characterized in that: internal threads are arranged inside the oil inlet and the oil outlet;
the two sides of the outer surfaces of the first valve body shell and the second valve body shell are respectively provided with an installation lifting lug, each installation lifting lug is respectively provided with a threaded hole, the first valve body shell and the second valve body shell are fixedly connected through a set screw, and the set screw is positioned in the threaded holes of the installation lifting lugs.
3. The self-holding dual spool electromagnetic switch valve according to claim 1, characterized in that: the inner diameters of the cavity of the first valve body shell and the cavity of the second valve body shell are equal, the center lines of the two cavities are located on the same straight line, the two cavities on the same side are combined to form a valve cavity, and the internal structures of the two valve cavities are completely the same and symmetrical.
4. The self-holding dual spool electromagnetic switch valve according to claim 3, characterized in that: the electromagnetic mechanism, the valve core mechanism and the valve sleeve and the valve seat in the valve body mechanism are all provided with two groups, and two valve cavities are respectively provided with one group.
5. The self-holding dual spool electromagnetic switch valve according to claim 1, characterized in that: the valve sleeve, the valve seat, the coil, the magnetism isolating ring, the fixed iron, the spring, the movable push rod and the central line of the armature are positioned on the same straight line.
6. The self-holding dual spool electromagnetic switch valve according to claim 1, characterized in that: a sealing groove is formed in the upper end face of the second valve body shell and connected with the rubber sealing ring;
the rubber sealing ring is of a double-ring structure, and a first through hole and a second through hole of the rubber sealing ring are respectively positioned on the same straight line with the center lines of the left cavity and the right cavity of the sealing groove.
7. The self-holding dual spool electromagnetic switch valve according to claim 1, characterized in that: the spring seat is of a cylindrical boss structure, and a medium circulation pore channel and a groove are formed in one end, close to the oil inlet, of the spring seat.
8. The self-holding dual spool electromagnetic switch valve according to claim 7, characterized in that: the fixed iron is made of soft magnetic materials, and a medium flow channel groove is formed in one side, corresponding to the groove of the spring seat, of the inner wall surface of the fixed iron;
the armature is a permanent magnet, a circular groove is formed in the center of the upper end face of the permanent magnet, and a chamfer is formed in the lower end face of the permanent magnet.
9. The use method of the self-holding double-spool electromagnetic switch valve according to claim 1, characterized in that: which comprises the following steps:
s1, when the valve is at the initial position, the armature does not move, the valve port is in a closed state, and the oil inlet and the oil outlet are in an unconnected state;
s2, an external control power supply is started, a generated electric signal is connected into a coil through a lead, a positive current + I passes through the coil, an electromagnet correspondingly generates a certain electromagnetic force, a fixed iron is quickly magnetized, an armature is opposite to a magnetic pole near the fixed iron after the positive current + I is introduced, a magnetic line of force generated by an armature magnetic field passes through the fixed iron, the electromagnetic force generated between the fixed iron and the armature is larger than resistance, the resistance is the sum of spring force and hydraulic force, the armature is quickly started, an oil inlet is communicated with an oil outlet, a working fluid medium flows in from the oil inlet, reaches a valve port position through a groove in the inner wall surface of a spring seat of each cavity and a groove in the wall surface of the fixed iron respectively, and flows out from the oil outlet;
s3, then, the external control power supply is closed, the electric signal is cut off, the coil is powered off, at the valve core opening position before the control power supply is closed, the magnetic line of force of the magnetic field generated by the armature still passes through the fixed iron, the electromagnetic force generated between the fixed iron and the armature is larger than the resistance, the armature keeps the opening state, the oil inlet is communicated with the oil outlet, the working fluid medium flows in from the oil inlet, reaches the valve port position through the grooves of the inner wall surfaces of the spring seats of the two cavities and the grooves of the wall surfaces of the fixed iron respectively, and flows out from the oil outlet;
s4, an external control power supply is started, an electric signal is connected into a coil through a lead, a reverse current-I is introduced into the coil at the moment, an electromagnet correspondingly generates a certain electromagnetic force, a fixed iron is quickly magnetized, an armature is the same as a magnetic pole close to the fixed iron after the forward current + I is introduced, the fixed iron and the armature are mutually repelled, the electromagnetic force generated between the fixed iron and the armature is smaller than resistance, the armature is quickly closed, an oil inlet is not communicated with an oil outlet, and a working fluid medium cannot pass through the valve body;
s5, the external control power supply is closed again, the electric signal is disconnected, the coil is powered off, the magnetic force of the fixed iron and the armature is still in a mutually exclusive state at the valve core closing position before the control power supply is closed, the electromagnetic force generated between the fixed iron and the armature is smaller than resistance, the armature is kept in a closing state, the oil inlet is not communicated with the oil outlet, and a working fluid medium cannot pass through the valve body;
s6, repeating the above steps S1-S5, the continuous opening or closing and the holding open or closed state of the electromagnetic opening and closing valve can be repeated.
CN202011412336.0A 2020-12-03 2020-12-03 Self-holding type double-valve-core electromagnetic switch valve and use method thereof Active CN112594416B (en)

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JP2021196412A JP7055513B1 (en) 2020-12-03 2021-12-02 Self-holding dual valve core electromagnetic switch valve and how to use it

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113669461B (en) * 2021-08-19 2022-04-05 浙江大学 Bistable electromagnetic valve
CN114278763B (en) * 2021-12-22 2022-11-11 浙江大学 Multi-state bistable electromagnetic three-way micro valve based on flexible magnet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86208370U (en) * 1986-10-30 1987-12-16 华中工学院 Digital colltrolling solenoid valve
EP0367114A2 (en) * 1988-10-27 1990-05-09 Nippondenso Co., Ltd. Three-way electromagnetic valve
KR20080098708A (en) * 2007-05-07 2008-11-12 위니아만도 주식회사 Valve
CN108019537A (en) * 2017-12-29 2018-05-11 北京理工大学 Bidirectional-movement fuel metering valve

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5371153B2 (en) 2011-04-05 2013-12-18 Ｃｋｄ株式会社 Fluid control valve
JP2019212700A (en) 2018-06-01 2019-12-12 株式会社デンソー Electromagnetic actuator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86208370U (en) * 1986-10-30 1987-12-16 华中工学院 Digital colltrolling solenoid valve
EP0367114A2 (en) * 1988-10-27 1990-05-09 Nippondenso Co., Ltd. Three-way electromagnetic valve
KR20080098708A (en) * 2007-05-07 2008-11-12 위니아만도 주식회사 Valve
CN108019537A (en) * 2017-12-29 2018-05-11 北京理工大学 Bidirectional-movement fuel metering valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
超高压大流量比例插装阀测试方法;姚静、寇成浩;《中国机械工程》;20200331;638-645 *

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