CN110486504B - Low-power-consumption large-flow electromagnetic valve - Google Patents
Low-power-consumption large-flow electromagnetic valve Download PDFInfo
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- CN110486504B CN110486504B CN201910787074.7A CN201910787074A CN110486504B CN 110486504 B CN110486504 B CN 110486504B CN 201910787074 A CN201910787074 A CN 201910787074A CN 110486504 B CN110486504 B CN 110486504B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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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
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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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
- F16K31/02—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
- F16K31/0603—Multiple-way valves
- F16K31/061—Sliding valves
- F16K31/0613—Sliding valves with cylindrical slides
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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
- F16K31/02—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
- F16K31/0679—Electromagnet aspects, e.g. electric supply therefor with more than one energising coil
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention relates to a low-power-consumption large-flow electromagnetic valve which comprises a valve body, wherein a valve hole, a pressure oil port, a first working oil port, a second working oil port, a first oil return port and a second oil return port are formed in the valve body; the left valve cover is fixedly connected to the left end of the valve body; the right valve cover is fixedly connected to the right end of the valve body; the valve core is arranged in the valve hole in a sliding manner, and a left pressure cavity and a right pressure cavity are formed between the valve core and the left valve cover and between the valve core and the right valve cover; a left spring and a right spring; the first valve seat is provided with a first damping hole; the second valve seat is provided with a second damping hole; the first electromagnet assembly is arranged in the left valve cover and is matched with the second damping hole to control the on-off of the right pressure cavity and the second oil return port; and the second electromagnet assembly is arranged in the right valve cover and is matched with the second damping hole to control the on-off of the right pressure cavity and the second oil return port. The low-power-consumption large-flow electromagnetic valve has a simple structure and a compact volume, and can realize a large-flow electromagnetic reversing function with low power consumption.
Description
Technical Field
The invention belongs to the technical field of electromagnetic valves, and particularly relates to a low-power-consumption large-flow electromagnetic valve.
Background
The electromagnetic directional valve is the most widely used hydraulic component in a hydraulic system, and the electromagnetic directional valve in the prior art is mostly a six-path electromagnetic directional valve and a ten-path electromagnetic directional valve which are introduced from German doctor-le company, consists of a valve body, a valve core, an electromagnet and a return spring and can work at three positions. However, the two types of electromagnetic directional valves are all switched by directly pushing the valve core to move by the output force of the electromagnet, because the electromagnetic directional valve has counter forces such as spring force, hydraulic clamping force, transient hydraulic force and the like during switching, the output force of the electromagnet for pushing the valve core needs to be larger, and because the electromagnetic valve needs to have the oil seal length and flow output requirements at one end, the electromagnet needs to have a longer working stroke, and thus enough power is needed to ensure the working reliability of the electromagnetic directional valve. For example, the output force of the six-path reversing valve electromagnet is more than 60N, the electromagnet stroke is 2.8mm, the maximum using flow is 60L/Min, and the rated power of the electromagnet is 32W; the output force of the electromagnet of the ten-path electromagnetic directional valve is more than 100N, the electromagnet stroke is 4.2mm, the maximum using flow is 100L/Min, and the rated power of the electromagnet is 40W. In the prior art, for the working condition with the rated flow of more than 100L/Min, a sixteen-diameter electro-hydraulic directional valve is adopted, and the six-diameter electromagnetic directional valve is used as a pilot valve to control the main valve to change direction, so that the valve core of the main valve can be reliably changed under the large flow, but the sixteen-diameter electro-hydraulic directional valve has the defects of large volume and high price.
Disclosure of Invention
The invention aims to solve the technical problem of providing the electromagnetic valve which has the advantages of simple structure, compact volume, low cost, low power consumption and large flow rate.
The technical scheme adopted by the invention for solving the technical problems is as follows: a low-power consumption large-traffic solenoid valve which characterized in that: the hydraulic control valve comprises a valve body, wherein a transverse valve hole is formed in the valve body, a pressure oil port, a first working oil port, a second working oil port, a first oil return port and a second oil return port are formed in the valve body, and a communication groove for communicating the first oil return port with the second oil return port is formed in the valve body;
the left valve cover is fixedly connected to the left end of the valve body and used for plugging a left opening of the valve hole;
the right valve cover is fixedly connected to the right end of the valve body and used for plugging a right opening of the valve hole;
the valve core is arranged in the valve hole in a left-right sliding mode, a left convex shoulder and a right convex shoulder are respectively arranged at the left end and the right end of the valve core, a left pressure cavity is formed between the left convex shoulder and the left valve cover in the valve hole, a right pressure cavity is formed between the right convex shoulder and the right valve cover, a first flow passage used for communicating the left pressure cavity with a pressure oil port is formed in the valve body and the left valve cover, a first damper is arranged in the first flow passage, a second flow passage used for communicating the right pressure cavity with the pressure oil port is formed in the valve body and the left valve cover, and a second damper is arranged in;
the left spring is positioned in the left pressure cavity, one end of the left spring is abutted against the left valve cover, the other end of the left spring is abutted against the valve core to enable the valve core to keep the trend of moving rightwards, the right spring is positioned in the right pressure cavity, one end of the right spring is abutted against the right valve cover, and the other end of the right spring is abutted against the valve core to enable the valve core to keep the trend of moving leftwards;
the first valve seat is fixedly arranged in the left valve cover, a first damping hole is formed in the first valve seat, one end of the first damping hole is communicated with the left pressure cavity, and the other end of the first damping hole is communicated with the first oil return port through a third flow passage formed in the valve body and the left valve cover;
the second valve seat is fixedly arranged in the right valve cover, a second damping hole is formed in the second valve seat, one end of the second damping hole is communicated with the right pressure cavity, and the other end of the second damping hole is communicated with a second oil return port through a fourth flow channel formed in the valve body and the left valve cover;
the first electromagnet assembly is arranged in the left valve cover and is matched with the first damping hole to control the connection and disconnection of the left pressure cavity and the first oil return port;
and the second electromagnet assembly is arranged in the right valve cover and is matched with the second damping hole to control the on-off of the right pressure cavity and the second oil return port.
Preferably, the first electromagnet assembly and the second electromagnet assembly have the same structure and respectively comprise a coil, a magnetic conduction sleeve, an armature, a guide sleeve, a valve needle and a return spring, the armature is slidably arranged in the magnetic conduction sleeve, the guide sleeve is fixedly arranged at the opening of the magnetic conduction sleeve, one end of the valve needle is fixedly connected with the armature, the other end of the valve needle is slidably matched with an inner hole of the guide sleeve and extends out of the guide sleeve, the valve needle is provided with a sharp needle for plugging the first damping hole or the second damping hole, the return spring is arranged between the magnetic conduction sleeve and the armature, one end of the return spring is abutted against the magnetic conduction sleeve, and the other end of the return spring is abutted against the armature to keep.
Preferably, the first flow passage comprises a first through-flow hole provided in the valve body and a second through-flow hole provided in the left bonnet; the second flow passage comprises a third through hole formed in the valve body and a fourth through hole formed in the right valve cover.
Preferably, the following components: the third flow channel comprises a fifth through hole formed in the valve body and a sixth through hole formed in the left valve cover; the fourth flow passage comprises a seventh through-flow hole formed in the valve body and an eighth through-flow hole formed in the right valve cover.
Preferably, when the coils of the first electromagnet assembly and the second electromagnet assembly are not electrified, the valve needle of the first electromagnet assembly blocks the first damping hole under the action of the reset spring of the first electromagnet assembly, the left pressure cavity and the first oil return opening are blocked and are not communicated, the valve needle of the second electromagnet assembly blocks the second damping hole under the action of the reset spring of the second electromagnet assembly, the right pressure cavity and the second oil return opening are blocked and are not communicated, the pressure of the left pressure cavity and the pressure of the right pressure cavity are equal to the pressure of the pressure oil opening, and the valve core is located at the middle position under the action of the left spring and the right spring.
Preferably, when a coil of the first electromagnet assembly is electrified, the armature of the first electromagnet assembly moves leftwards by overcoming the acting force of the return spring, so that the valve needle of the first electromagnet assembly opens the first damping hole, the left pressure cavity is communicated with the first oil return port, the pressure of the right pressure cavity is equal to the pressure of the pressure oil port, the pressure of the left pressure cavity is smaller than the pressure of the pressure oil port, the valve core moves leftwards under the action of the pressure difference between the right pressure cavity and the left pressure cavity, and the valve core works at the left end position.
Preferably, when a coil of the second electromagnet assembly is electrified, the armature of the second electromagnet assembly overcomes the acting force of the reset spring and moves rightwards, so that the valve needle of the second electromagnet assembly opens the second damping hole, the right pressure cavity is communicated with the second oil return opening, the pressure of the left pressure cavity is equal to that of the pressure oil port, the pressure of the right pressure cavity is smaller than that of the pressure oil port, the valve core moves rightwards under the action of the pressure difference between the left pressure cavity and the right pressure cavity, and the valve core works at the right end position.
Preferably, the diameters of the first orifice and the second orifice are not greater than 1 mm.
Compared with the prior art, the invention has the advantages that: according to the invention, the first electromagnet assembly is matched with the first damping hole to control the on-off of the left pressure cavity and the first oil return port, and the second electromagnet assembly is matched with the second damping hole to control the on-off of the right pressure cavity and the second oil return port, so that when the first electromagnet assembly blocks the first damping hole and the second electromagnet assembly blocks the second damping hole, the pressure of the left pressure cavity and the pressure of the right pressure cavity are equal, and the valve core works at the middle position; when the first electromagnet assembly opens the first damping hole, hydraulic oil flows into the first oil return port from the pressure oil port after passing through the first damper, the left pressure cavity and the first damping hole, the pressure of the left pressure cavity is lower than that of the pressure oil port, the pressure of the right pressure cavity is equal to that of the pressure oil port, and the valve core is reversed to the left end position under the action of the pressure difference between the right pressure cavity and the left pressure cavity; when the second electromagnet assembly opens the second damping hole, hydraulic oil flows into the second oil return opening through the second damper, the right pressure cavity and the second damping hole by the pressure oil port, the pressure of the right pressure cavity is lower than that of the pressure oil port, the pressure of the left pressure cavity is equal to that of the pressure oil port, and the valve core is reversed to the left end position under the action of the pressure difference of the left pressure cavity and the right pressure cavity. The diameters of the first damping hole and the second damping hole are small, so that the thrust of the first electromagnet assembly and the second electromagnet assembly is small, and the power consumption can be reduced; the valve core is pushed by the acting force of the pressure difference of the left pressure cavity and the right pressure cavity on the valve core, and the thrust of the electromagnet of the electromagnetic directional valve with the diameter far larger than 10 drift diameters can be generated, so that the valve core can be used under the working condition of large flow.
Drawings
FIGS. 1-2 are schematic three-dimensional structures of embodiments of the present invention;
FIG. 3 is a schematic cross-sectional view of an embodiment of the present invention;
FIG. 4 is a left side view of an embodiment of the present invention;
FIG. 5 is a schematic view of the cross-sectional structure C-C of FIG. 4;
FIG. 6 is a schematic view of the D-D structure of FIG. 4;
FIG. 7 is a schematic view of the structure E-E of FIG. 4;
figure 8 is an exploded view of the first electromagnet assembly.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1-8, is a preferred embodiment of the present invention.
A low-power consumption large-flow electromagnetic valve comprises
The hydraulic control valve comprises a valve body 1, wherein a transverse valve hole 1c is formed in the valve body 1, a pressure oil port P, a first working oil port A, a second working oil port B, a first oil return port T1 and a second oil return port T2 are arranged on the valve body 1, and a communication groove 101 for communicating the first oil return port T1 with the second oil return port T2 is formed in the valve body 1.
And the right valve cover 3 is fixedly connected at the right end of the valve body 1 and used for plugging the right opening of the valve hole 1 c.
A valve core 5, the valve core 5 can slide left and right and is arranged in the valve hole 1c, the left and right ends of the valve core 5 are respectively provided with a left shoulder 51 and a right shoulder 52, in the valve hole 1c, a left pressure chamber 1a is formed between the left shoulder 51 and the left valve cover 2, a right pressure chamber 1b is formed between the right shoulder 52 and the right valve cover 3, a first flow passage for communicating the left pressure chamber 1a and the pressure port P is arranged on the valve body 1 and the left valve cover 2, the first flow passage comprises a first through-flow hole 102 arranged on the valve body 1 and a second through-flow hole 21 arranged on the left valve cover 2, a first damper 8a is arranged in the first flow passage, a second flow passage for communicating the right pressure cavity 1b and the pressure oil port P is arranged on the valve body 1 and the left valve cover 2, the second flow passage includes a third through-hole 103 provided in the valve body 1 and a fourth through-hole 31 provided in the right valve cover 3, and a second damper 8b is provided in the second flow passage.
The left spring 6a is positioned in the left pressure cavity 1a, one end of the left spring 6a is abutted against the left valve cover 2, the other end of the left spring is abutted against the valve core 5 to keep the trend of moving the valve core 5 rightwards, and the right spring 6b is positioned in the right pressure cavity 1b, one end of the right spring is abutted against the right valve cover 3, and the other end of the right spring is abutted against the valve core 5 to keep the trend of moving the valve core 5 leftwards.
The second valve seat 7b, the second valve seat 7b is fixedly installed in the right valve cover 3, a second damping hole 7b1 is arranged on the second valve seat 7b, the diameter of the second damping hole 7b1 is not more than 1mm, one end of the second damping hole 7b1 is communicated with the right pressure cavity 1b, the other end of the second damping hole 7b1 is communicated with a second oil return port T2 through a fourth flow channel arranged on the valve body 1 and the left valve cover 2, and the fourth flow channel comprises a seventh through-flow hole 105 arranged on the valve body 1 and an eighth through-flow hole 32 arranged on the right valve cover 3.
The first electromagnet assembly 4a is arranged in the left valve cover 2 and is used for matching with the first damping hole 7a1 to control the on-off of the left pressure cavity 1a and the first oil return port T1.
And the second electromagnet assembly 4b is arranged in the right valve cover 3 and is used for being matched with the second damping hole 7b1 to control the connection and disconnection of the right pressure cavity 1b and the second oil return port T2.
The first electromagnet assembly 4a and the second electromagnet assembly 4b have the same structure, and each include a coil 41, a flux sleeve 42, an armature 43, a guide sleeve 44, a valve needle 45, and a return spring 46, wherein the armature 43 is slidably disposed in the flux sleeve 42, the guide sleeve 44 is fixedly mounted at an opening of the flux sleeve 42, one end of the valve needle 45 is fixedly connected to the armature 43, the other end of the valve needle 45 is slidably fitted with an inner hole of the guide sleeve 44 and extends out of the guide sleeve 44, a sharp needle 451 for plugging the first damping hole 7a1 or the second damping hole 7b1 is disposed on the valve needle 45, the return spring 46 is disposed between the flux sleeve 42 and the armature 43, one end of the return spring 46 abuts against the flux sleeve 42, and the other end abuts against the armature 43 to keep the armature 43 in an outward extending trend.
The working principle and the process of the invention are as follows:
when the coils 41 of the first electromagnet assembly 4a and the second electromagnet assembly 4b are not electrified, under the action of the return spring 46 of the first electromagnet assembly 4a, the valve needle 45 of the first electromagnet assembly 4a seals the first damping hole 7a1, the left pressure chamber 1a is isolated from the first oil return port T1, under the action of the return spring 46 of the second electromagnet assembly 4b, the valve needle 45 of the second electromagnet assembly 4b seals the second damping hole 7b1, the right pressure chamber 1b is isolated from the second oil return port T2, the pressures of the left pressure chamber 1a and the right pressure chamber 1b are equal to the pressure of the pressure oil port P, and under the action of the left spring 6a and the right spring 6b, the valve core 5 is at the middle position.
When the coil 41 of the first electromagnet assembly 4a is electrified, the armature 43 of the first electromagnet assembly 4a moves leftward against the acting force of the return spring 46, so that the valve needle 45 of the first electromagnet assembly 4a opens the first damping hole 7a1, the left pressure chamber 1a is communicated with the first oil return port T1, the pressure of the right pressure chamber 1b is equal to the pressure of the pressure oil port P, the pressure of the left pressure chamber 1a is smaller than the pressure of the pressure oil port P, the valve element 5 moves leftward under the action of the pressure difference between the right pressure chamber 1b and the left pressure chamber 1a, and the valve element 5 operates at the left end position.
When the coil 41 of the second electromagnet assembly 4b is electrified, the armature 43 of the second electromagnet assembly 4b moves rightward against the acting force of the return spring 46, so that the valve needle 45 of the second electromagnet assembly 4b opens the second damping hole 7b1, the right pressure chamber 1b is communicated with the second oil return port T2, the pressure of the left pressure chamber 1a is equal to that of the pressure oil port P, the pressure of the right pressure chamber 1b is smaller than that of the pressure oil port P, the valve element 5 moves rightward under the action of the pressure difference between the left pressure chamber 1a and the right pressure chamber 1b, and the valve element 5 works at the right end position.
In the invention, the diameters of the first damping hole 7a1 and the second damping hole 7b1 are not more than 1mm, so that even if the pressure of the pressure oil port P is 30MPa, the pressure generated on the valve needle 45 is only 3.14X0.5X0.5X30=23.55N, that is, the first electromagnet assembly 4a and the second electromagnet assembly 4b only need to generate a suction force larger than 23.55N to open the first damping hole 7a1 or the second damping hole 7b1, and the thrust force is much smaller than the thrust force (more than 60N) of the electromagnet of the six-diameter electromagnetic directional valve and the thrust force (more than 100N) of the electromagnet of the ten-diameter electromagnetic directional valve, so that the power consumption of the first electromagnet assembly 4a and the second electromagnet assembly 4b is low. If the same specification size of the ten-diameter electromagnetic directional valve is adopted for the valve body and the valve core in the invention, that is, the diameter of the valve core 5 is 18mm, when the pressure of the pressure port P is 1MPa, the maximum pressure difference between the left pressure chamber and the right pressure chamber is 1MPa, the thrust generated on the valve core 5 by the pressure difference is 3.14X9X 1=254.34N and is far greater than the thrust (100N) of the electromagnet of the ten-diameter electromagnetic directional valve, and so on, when the pressure of the pressure port P is 2MPa, the maximum pressure difference between the left pressure chamber and the right pressure chamber is 2MPa, the thrust generated on the valve core 5 by the pressure difference is 3.14X9X 2=508.68N, therefore, the invention can generate a greater thrust on the valve core and can allow a greater flow (maximum 160L/Min) compared with the ten-diameter electromagnetic directional valve in the prior art.
Claims (8)
1. A low-power consumption large-traffic solenoid valve which characterized in that: comprises that
The hydraulic control valve comprises a valve body (1), wherein a transverse valve hole (1c) is formed in the valve body (1), a pressure oil port (P), a first working oil port (A), a second working oil port (B), a first oil return port (T1) and a second oil return port (T2) are formed in the valve body (1), and a communication groove (101) used for communicating the first oil return port (T1) with the second oil return port (T2) is formed in the valve body (1);
the left valve cover (2), the left valve cover (2) is fixedly connected to the left end of the valve body (1) and used for plugging the left opening of the valve hole (1 c);
the right valve cover (3), the right valve cover (3) is fixedly connected to the right end of the valve body (1) and used for plugging the right opening of the valve hole (1 c);
the valve core (5), the valve core (5) can be arranged in the valve hole (1c) in a left-right sliding mode, a left convex shoulder (51) and a right convex shoulder (52) are arranged at the left end and the right end of the valve core (5) respectively, a left pressure cavity (1a) is formed between the left convex shoulder (51) and the left valve cover (2) in the valve hole (1c), a right pressure cavity (1b) is formed between the right convex shoulder (52) and the right valve cover (3), a first flow channel for communicating the left pressure cavity (1a) with a pressure oil port (P) is formed in the valve body (1) and the left valve cover (2), a first damper (8a) is arranged in the first flow channel, a second flow channel for communicating the right pressure cavity (1b) with the pressure oil port (P) is formed in the valve body (1) and the left valve cover (2), and a second damper (8;
the left spring (6a) is positioned in the left pressure cavity (1a), one end of the left spring is abutted against the left valve cover (2), the other end of the left spring is abutted against the valve core (5) to keep the trend that the valve core (5) moves rightwards, the right spring (6b) is positioned in the right pressure cavity (1b), one end of the right spring is abutted against the right valve cover (3), and the other end of the right spring is abutted against the valve core (5) to keep the trend that the valve core (5) moves leftwards;
the valve comprises a first valve seat (7a), the first valve seat (7a) is fixedly installed in a left valve cover (2), a first damping hole (7a1) is formed in the first valve seat (7a), one end of the first damping hole (7a1) is communicated with a left pressure cavity (1a), and the other end of the first damping hole (7a1) is communicated with a first oil return port (T1) through a third flow passage formed in a valve body (1) and the left valve cover (2);
the second valve seat (7b) is fixedly installed in the right valve cover (3), a second damping hole (7b1) is formed in the second valve seat (7b), one end of the second damping hole (7b1) is communicated with the right pressure cavity (1b), and the other end of the second damping hole (7b1) is communicated with a second oil return port (T2) through a fourth flow channel formed in the valve body (1) and the left valve cover (2);
the first electromagnet assembly (4a) is arranged in the left valve cover (2) and is used for being matched with the first damping hole (7a1) to control the connection and disconnection of the left pressure cavity (1a) and the first oil return port (T1);
and the second electromagnet assembly (4b), the second electromagnet assembly (4b) is arranged in the right valve cover (3) and is used for being matched with the second damping hole (7b1) to control the on-off of the right pressure cavity (1b) and the second oil return port (T2).
2. The low-power-consumption high-flow electromagnetic valve according to claim 1, characterized in that: the first electromagnet assembly (4a) and the second electromagnet assembly (4b) have the same structure and respectively comprise a coil (41), a magnetic sleeve (42) and an armature (43), the valve comprises a guide sleeve (44), a valve needle (45) and a return spring (46), wherein an armature (43) is arranged in the magnetic sleeve (42) in a sliding mode, the guide sleeve (44) is fixedly installed at an opening of the magnetic sleeve (42), one end of the valve needle (45) is fixedly connected with the armature (43), the other end of the valve needle is matched with an inner hole of the guide sleeve (44) in a sliding mode and extends out of the guide sleeve (44), a sharp needle (451) used for blocking a first damping hole (7a1) or a second damping hole (7b1) is arranged on the valve needle (45), the return spring (46) is arranged between the magnetic sleeve (42) and the armature (43), one end of the return spring (46) abuts against the magnetic sleeve (42), and the other end of the return spring abuts against the armature (43) to enable the armature (43) to keep the.
3. The low-power-consumption high-flow electromagnetic valve according to claim 1, characterized in that: the first flow passage comprises a first through hole (102) arranged on the valve body (1) and a second through hole (21) arranged on the left valve cover (2); the second flow passage comprises a third through hole (103) formed in the valve body (1) and a fourth through hole (31) formed in the right valve cover (3).
4. The low-power-consumption high-flow electromagnetic valve according to claim 1, characterized in that: the third flow channel comprises a fifth through hole (104) arranged on the valve body (1) and a sixth through hole (22) arranged on the left valve cover (2); the fourth flow channel comprises a seventh through-flow hole (105) formed in the valve body (1) and an eighth through-flow hole (32) formed in the right valve cover (3).
5. The low-power-consumption high-flow electromagnetic valve according to claim 2, characterized in that: when the coils (41) of the first electromagnet assembly (4a) and the second electromagnet assembly (4b) are not electrified, under the action of a return spring (46) of the first electromagnet assembly (4a), a valve needle (45) of the first electromagnet assembly (4a) blocks a first damping hole (7a1), a left pressure cavity (1a) is isolated from a first oil return port (T1), under the action of a return spring (46) of the second electromagnet assembly (4b), a valve needle (45) of the second electromagnet assembly (4b) blocks a second damping hole (7b1), a right pressure cavity (1b) is isolated from a second oil return port (T2), the pressure of a left pressure cavity (1a) and the pressure of a right pressure cavity (1b) are equal to the pressure of a pressure oil port (P), the valve core (5) is in a middle position under the acting force of the left spring (6a) and the right spring (6 b).
6. The low-power-consumption high-flow electromagnetic valve according to claim 2, characterized in that: when a coil (41) of the first electromagnet assembly (4a) is electrified, an armature (43) of the first electromagnet assembly (4a) overcomes the acting force of a return spring (46) to move leftwards, so that a valve needle (45) of the first electromagnet assembly (4a) opens a first damping hole (7a1), a left pressure cavity (1a) is communicated with a first oil return port (T1), the pressure of a right pressure cavity (1b) is equal to that of a pressure oil port (P), the pressure of the left pressure cavity (1a) is smaller than that of the pressure oil port (P), a valve core (5) moves leftwards under the action of the pressure difference between the right pressure cavity (1b) and the left pressure cavity (1a), and the valve core (5) works at the left end position.
7. The low-power-consumption high-flow electromagnetic valve according to claim 2, characterized in that: when a coil (41) of the second electromagnet assembly (4b) is electrified, an armature (43) of the second electromagnet assembly (4b) overcomes the acting force of a return spring (46) and moves rightwards, so that a valve needle (45) of the second electromagnet assembly (4b) opens a second damping hole (7b1), a right pressure cavity (1b) is communicated with a second oil return port (T2), the pressure of a left pressure cavity (1a) is equal to that of a pressure oil port (P), the pressure of a right pressure cavity (1b) is smaller than that of the pressure oil port (P), a valve core (5) moves rightwards under the action of the pressure difference between the left pressure cavity (1a) and the right pressure cavity (1b), and the valve core (5) works at the right end position.
8. The low-power-consumption high-flow electromagnetic valve according to claim 1, characterized in that: the diameters of the first orifice (7a1) and the second orifice (7b1) are not more than 1 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910787074.7A CN110486504B (en) | 2019-08-25 | 2019-08-25 | Low-power-consumption large-flow electromagnetic valve |
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| CN201910787074.7A CN110486504B (en) | 2019-08-25 | 2019-08-25 | Low-power-consumption large-flow electromagnetic valve |
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| CN110486504A CN110486504A (en) | 2019-11-22 |
| CN110486504B true CN110486504B (en) | 2020-12-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US3701366A (en) * | 1970-08-14 | 1972-10-31 | Atos Apparecchiature Oleodinam | Hydraulic solenoid valve directly operated with adjustable over-ride speed |
| CN2278129Y (en) * | 1996-06-18 | 1998-04-08 | 绍兴市自动化仪表厂 | Low consumption low voltage energy-saving electromagnetic valve |
| CN1133025C (en) * | 2002-01-18 | 2003-12-31 | 宁波华液机器制造有限公司 | Bidirectional differential pressure feedback type proportional pilot control slide valve |
| CN103697216A (en) * | 2013-12-17 | 2014-04-02 | 宁波华液机器制造有限公司 | Low power consumption electromagnetic valve |
| CN104165166B (en) * | 2014-07-30 | 2016-08-24 | 株洲中研流体技术有限公司 | A kind of compact telescopic oil cylinder switching valve group |
| JP5870326B1 (en) * | 2015-01-22 | 2016-02-24 | サンテスト株式会社 | Voice coil motor and direct acting servo valve using the voice coil motor |
| CN208268473U (en) * | 2018-01-26 | 2018-12-21 | 博世力士乐（常州）有限公司 | Reversal valve |
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Effective date of registration: 20201202 Address after: 225000 Guangling Economic Development Zone, Guangling District, Yangzhou City, Jiangsu Province Applicant after: JIANGSU KEMAI HYDRAULIC CONTROL SYSTEM Co.,Ltd. Address before: 315000 Room 805, Hongshu Bay, Jiaochuan Street, Zhenhai District, Ningbo City, Zhejiang Province Applicant before: Huang Honggang |
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