CN117432669A - Low-magnetic-resistance high-speed switch valve and combined pilot switch valve - Google Patents
Low-magnetic-resistance high-speed switch valve and combined pilot switch valve Download PDFInfo
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- CN117432669A CN117432669A CN202311423179.7A CN202311423179A CN117432669A CN 117432669 A CN117432669 A CN 117432669A CN 202311423179 A CN202311423179 A CN 202311423179A CN 117432669 A CN117432669 A CN 117432669A
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- 238000004891 communication Methods 0.000 claims abstract description 40
- 230000009471 action Effects 0.000 claims description 9
- 230000005389 magnetism Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 description 7
- 230000004044 response Effects 0.000 description 6
- 238000013459 approach Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K31/0644—One-way valve
- F16K31/0655—Lift valves
- F16K31/0665—Lift valves with valve member being at least partially ball-shaped
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention discloses a low-reluctance high-speed switch valve and a combined pilot switch valve, which relate to the technical field of switch valves and are used for solving the problem of high retraction resistance of a rotor. The low-reluctance high-speed switch valve comprises a controllable valve and a control component, wherein the controllable valve is provided with a first oil inlet channel and a first oil outlet channel, the control component is used for controlling the first oil inlet channel and the first oil outlet channel to be connected and disconnected, the control component comprises an electromagnetic driving piece, a first elastic piece and a rotor, the electromagnetic driving piece is provided with an electromagnetic driving cavity, the first elastic piece is arranged in the electromagnetic driving cavity, one end of the first elastic piece is abutted against the rotor, the rotor is used for controlling the first oil inlet channel and the first oil outlet channel to be connected and disconnected, a plurality of communication cavities are formed in the rotor, the communication cavities are communicated with the rotor along the axial direction of the rotor, one end of each communication cavity is communicated with the outlet of the first oil inlet channel, and the other end of each communication cavity is communicated with the electromagnetic driving cavity. The combined pilot switching valve comprises a main valve and a low-reluctance high-speed switching valve.
Description
Technical Field
The invention relates to the technical field of switch valves, in particular to a low-magnetic-resistance high-speed switch valve and a combined pilot switch valve.
Background
The high-speed switch valve is used as a key element of a hydraulic control system, particularly has very high technical requirements on the high-speed switch valve in the control system in the field of aviation, and two large parameters of flow and response speed in the high-speed switch valve are contradictory, so that the control requirements on the flow and the response speed cannot be met at the same time.
In the prior art, the high-speed switch valve is combined with the high-flow main valve, so that the high-speed switch valve has the characteristics of quick response and large flow, the high-speed switch valve and the main valve are connected into an integrated structure through the structural design of the high-speed switch valve, the switch valve for controlling the large flow is formed, and an oil way is arranged between the rotor for controlling the on-off of the oil way in the high-speed switch valve and the inner wall of the main body of the high-speed switch valve at present.
Disclosure of Invention
The invention aims to provide a low-magnetic resistance high-speed switch valve and a combined pilot switch valve so as to solve the problem of high retraction resistance of a rotor.
The invention provides a low-reluctance high-speed switch valve, which comprises a controllable valve and a control assembly, wherein the controllable valve is provided with a first oil inlet channel and a first oil outlet channel;
the control assembly includes: the electromagnetic driving piece is provided with an electromagnetic driving cavity, the first elastic piece is arranged in the electromagnetic driving cavity, one end of the first elastic piece is propped against the rotor, the rotor is used for controlling the connection and disconnection of the first oil inlet channel and the first oil outlet channel, a plurality of communication cavities are formed in the rotor, the communication cavities penetrate the rotor along the axial direction of the rotor, one end of each communication cavity is communicated with an outlet of the first oil inlet channel, and the other end of each communication cavity is communicated with the electromagnetic driving cavity;
when the electromagnetic driving piece works, the rotor is driven by the electromagnetic driving piece to approach the electromagnetic driving piece along the axial direction of the rotor, and the first oil inlet channel and the first oil outlet channel are disconnected; when the electromagnetic driving piece stops working, the rotor is far away from the electromagnetic driving piece along the axial direction of the rotor under the action of the elasticity of the first elastic piece, and the first oil inlet channel and the first oil outlet channel are communicated;
or when the electromagnetic driving piece works, the rotor is driven by the electromagnetic driving piece to approach the electromagnetic driving piece along the axial direction of the rotor, and the first oil inlet channel and the first oil outlet channel are communicated; when the electromagnetic driving piece stops working, the rotor is far away from the electromagnetic driving piece along the axial direction of the rotor under the action of the elastic force of the first elastic piece, and the first oil inlet channel and the first oil outlet channel are disconnected.
Compared with the prior art, the low-magnetic-resistance high-speed switch valve comprises the controllable valve and the control component, wherein the controllable valve is provided with the first oil inlet channel and the first oil outlet channel, the control component is used for controlling the first oil inlet channel and the first oil outlet channel to be connected and disconnected, in the prior art, an oil way is arranged between the rotor and the inner wall of the main body of the high-speed switch valve, so that the magnetic resistance is increased, the rotor is high in retraction, the oil way of the rotor is arranged in the rotor, one end of the elastic piece is propped against the rotor, the rotor is provided with a plurality of communication cavities, the communication cavities penetrate the rotor along the axial direction of the rotor, one end of each communication cavity is communicated with the outlet of the first oil inlet channel, and the other end of each communication cavity is communicated with the electromagnetic driving cavity of the electromagnetic driving piece, so that a magnetic field generated by the control component after being electrified can not radiate the inner oil channel of the rotor, and the magnetic resistance of the rotor is reduced when the rotor is retracted, so that the rotor smoothly moves up and down in the low-magnetic-resistance high-speed switch valve under the lubrication action of oil.
In a second aspect, the present invention provides a combined pilot switching valve, including a main valve and the low-reluctance high-speed switching valve described in the first aspect, where the low-reluctance high-speed switching valve is used as a pilot valve to control the opening and closing of the main valve.
Compared with the prior art, the combined type pilot switch valve provided by the invention comprises the low-magnetic-resistance high-speed switch valve, and the combined type pilot switch valve has the beneficial effects that the low-magnetic-resistance high-speed switch valve is used as a pilot valve to control the opening and closing of the main valve, when the low-magnetic-resistance high-speed switch valve is used as the pilot valve, the low-magnetic-resistance high-speed switch valve can control the connection and disconnection of an oil way of the low-magnetic-resistance high-speed switch valve and the main valve, the flow of the combined type pilot switch valve is regulated through the cooperation of the low-magnetic-resistance high-speed switch valve and the main valve, and the combined type pilot switch valve is ensured to be suitable for the flow requirements under different working conditions.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 illustrates a perspective view of a switching valve spool according to an exemplary embodiment of the present invention;
FIG. 2 illustrates a cross-sectional view of a switching valve spool according to an exemplary embodiment of the present invention;
FIG. 3 illustrates a block diagram of a low reluctance high speed switching valve according to an exemplary embodiment of the present invention;
FIG. 4 illustrates a cross-sectional view of a low reluctance high speed switching valve according to an exemplary embodiment of the present invention;
FIG. 5 illustrates a block diagram of a combined pilot switching valve according to an exemplary embodiment of the present invention;
fig. 6 shows a sectional view of a combined pilot switching valve according to an exemplary embodiment of the present invention.
Reference numerals:
the valve comprises a 1-switching valve core, a 11-first valve core main body inner hole, a 12-valve ball, a 13-second valve core main body inner hole, a 14-plug, a 2-low magnetic resistance high-speed switching valve, a 211-stator, a 212-rotor, a 21-control component, a 22-thimble, a 23-oil groove, a 24-communication cavity, a 25-electromagnetic driving cavity, a 26-first elastic piece, a 3-main valve, a 31-second oil inlet channel, a 32-main valve core, a 33-valve core groove, a 34-valve port component and a 35-main valve body.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one unless specifically defined otherwise.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The high-speed switch valve is used as a key element of a hydraulic control system, particularly has very high technical requirements on the high-speed switch valve in the control system in the field of aviation, and two large parameters of flow and response speed in the high-speed switch valve are contradictory, so that the control requirements on the flow and the response speed cannot be met at the same time.
In the prior art, the high-speed switch valve is combined with the high-flow main valve, so that the high-speed switch valve has the characteristics of quick response and large flow, the high-speed switch valve and the main valve are connected into an integrated structure through the structural design of the high-speed switch valve, the switch valve for controlling the large flow is formed, and an oil way is arranged between the rotor for controlling the on-off of the oil way in the high-speed switch valve and the inner wall of the main body of the high-speed switch valve at present.
In order to solve the problems, the exemplary embodiment of the invention provides a low-reluctance high-speed switching valve and a combined pilot switching valve, so as to solve the problem of high retraction resistance of a rotor.
Fig. 1 illustrates a perspective view of a switching valve spool of an exemplary embodiment of the present invention, fig. 2 illustrates a cross-sectional view of the switching valve spool of the exemplary embodiment of the present invention, fig. 3 illustrates a structural view of a low reluctance high speed switching valve of the exemplary embodiment of the present invention, and fig. 4 illustrates a cross-sectional view of the low reluctance high speed switching valve of the exemplary embodiment of the present invention. As shown in fig. 1 to 4, the low-reluctance high-speed switch valve 2 provided by the exemplary embodiment of the invention comprises a switch valve core 1, a controllable valve and a control assembly 21, wherein the controllable valve is provided with a first oil inlet channel and a first oil outlet channel, the control assembly 21 is used for controlling the on and off of the first oil inlet channel and the first oil outlet channel, and the switch valve core 1 is arranged in the controllable valve; the on-off valve spool 1 includes: the valve comprises a valve core main body, a valve ball 12 and a thimble 22, wherein the valve core main body is provided with a first oil inlet channel, the valve ball 12 is arranged in the first oil inlet channel, one end of the valve core main body, which is close to a control assembly 21, is provided with a first valve core main body inner hole 11, the thimble 22 limits the rising amplitude of the valve ball 12 through the first valve core main body inner hole 11, one end of the valve core main body, which is far away from the control assembly 21, is provided with a second valve core main body inner hole 13, the aperture of the second valve core main body inner hole 13 is smaller than the diameter of the valve ball 12, and the second valve core main body inner hole 13 is used for limiting the falling amplitude of the valve ball 12; the control assembly 21 includes an electromagnetic driving member, a first elastic member 26 and a rotor 212, where the electromagnetic driving member has an electromagnetic driving cavity 25, the electromagnetic driving cavity 25 is close to the controllable valve, the first elastic member 26 is installed in the electromagnetic driving cavity 25, one end of the first elastic member 26 close to the valve core 1 of the switch valve is against the rotor 212, the rotor 212 has a plurality of communication cavities 24, the plurality of communication cavities 24 penetrate the rotor 212 along the axial direction of the rotor 212, the plurality of communication cavities 24 are distributed along the circumferential direction of the axis of the rotor 212, one end of each communication cavity 24 is communicated with the outlet of the first oil inlet channel, the other end of each communication cavity 24 is communicated with the electromagnetic driving cavity 25 of the electromagnetic driving member, specifically, the horizontal projection of the plurality of communication cavities 24 on the ejector pin 22 is intersected with the horizontal projection of the ejector pin 22.
In particular, when the control assembly 21 controls the first oil inlet channel and the first oil outlet channel to be conducted, oil enters the first oil channel through the second valve core main body inner hole 13, when the oil flows through the valve ball 12, the oil is split to flow out of the first valve core main body inner hole 11 from two sides of the valve ball 12, when the control assembly 21 controls the first oil inlet channel and the first oil outlet channel to be disconnected, the oil cannot flow in from the second valve core main body inner hole 13, based on the fact that when the first oil inlet channel and the first oil outlet channel are conducted and disconnected, the oil flows through the first oil inlet channel, the first valve core main body inner hole 11 is formed at one end of the valve core main body, which is close to the control assembly 21, the lifting amplitude of the valve ball 12 is limited by the first valve core main body inner hole 11, and when the oil flows through the first oil inlet channel, the second valve core main body inner hole 13 is formed at one end, which is far away from the control assembly 21, of the oil needs to flow in from the second valve core main body inner hole 13, and then flows out of the first valve core main body inner hole 11, the diameter of the second valve core main body inner hole 13 is smaller than the diameter of the ball 12, and the valve core main body inner hole 13 is used for limiting the lifting amplitude of the valve core 12.
The rotor 212 is provided with a plurality of communication cavities 24, the communication cavities 24 penetrate through the rotor 212 along the axial direction of the rotor 212, the communication cavities 24 are distributed along the circumferential direction of the axis of the rotor 212, one end of each communication cavity 24 is communicated with an outlet of a first oil inlet channel, the other end of each communication cavity 24 is communicated with an electromagnetic driving cavity 25 of an electromagnetic driving part, the horizontal projection of each communication cavity 24 on the thimble 22 is intersected with the horizontal projection of the thimble 22, it is understood that the horizontal projection of each communication cavity 24 on the thimble 22 is intersected with the horizontal projection of the thimble 22, the projections of the communication cavities 24 are annularly arranged on the thimble 22 along the circumferential direction of the thimble 22, when oil enters each communication cavity 24 through the first oil inlet channel, the oil can be split in a staggered distribution mode with the thimble 22, and the resistance of oil hydraulic pressure to retraction of the rotor 212 is reduced.
As shown in fig. 6, to avoid dropping the valve ball 12, a plug 14 may be disposed near one end of the inner bore 13 of the second valve core body, where the plug 14 is used to limit the valve ball 12 in the valve core body, and it is understood that the plug 14 may be a tubular structure or a structure with other hollow structures.
In addition, in the prior art, an oil path is arranged between the rotor 212 and the inner wall of the pilot valve main body to increase magnetic resistance, so that the resistance of the rotor 212 is large when the rotor is retracted, while in the invention, the oil path of the rotor 212 is arranged in the rotor 212, one end of the first elastic piece 26, which is close to the valve core 1 of the switch valve, is propped against the rotor 212, the rotor 212 is provided with a plurality of communication cavities 24, the plurality of communication cavities 24 penetrate the rotor 212 along the axial direction of the rotor 212, the plurality of communication cavities 24 are distributed along the circumferential direction of the axis of the rotor 212, one end of each communication cavity 24 is communicated with the outlet of the first oil inlet channel, and the other end of each communication cavity 24 is communicated with the electromagnetic driving cavity 25 of the electromagnetic driving piece, so that the magnetic field generated by the control assembly 21 after being electrified is not radiated to the oil channel in the rotor 212, and the magnetic resistance of the rotor 212 is reduced when the rotor 212 is retracted, so that the rotor 212 moves smoothly up and down in the low-magnetic resistance high speed switch valve 2 under the lubrication action of oil.
As shown in fig. 3 and 4, the valve core further includes an oil groove 23, an end of the valve core main body, which is close to the control assembly 21, is formed with the oil groove 23, the oil groove 23 is respectively communicated with an outlet of the first oil inlet channel and an inlet of the first oil outlet channel, the thimble 22 penetrates through the oil groove 23 and slidably extends into the first oil inlet channel through the inner hole 11 of the first valve core main body, and an end part of the thimble 22 extending into the first oil inlet channel is matched with the valve ball 12.
As shown in fig. 4, the control assembly 21 includes an electromagnetic driving member, a first elastic member 26, and a mover 212, where the first elastic member 26 is disposed on the electromagnetic driving member, and one end of the first elastic member 26, which is close to the valve element 1, abuts against the mover 212. For example: the electromagnetic driving member may include a stator 211 and a coil sleeved on the stator 211, where the mover 212 is driven by the electromagnetic driving member to approach the electromagnetic driving member along the axial direction of the mover 212, and the mover 212 is driven by the elastic force of the first elastic member 26 to approach the electromagnetic driving member along the axial direction of the mover 212, and the mover 212 is used to control the first oil inlet channel and the first oil outlet channel to be turned on and off. In specific implementation, when the coil is electrified to generate magnetic attraction force, the mover 212 can overcome the elastic force of the first elastic piece 26 to move in a direction away from the main valve 3 under the action of the magnetic attraction force; the coil is powered off, and the mover 212 is far away from the electromagnetic driving member in the axial direction of the mover 212 under the elastic force of the first elastic member 26.
The low reluctance high speed switching valve 2 of the exemplary embodiment of the present invention is a cylindrical housing structure, the low reluctance high speed switching valve 2 is divided into an upper valve body having a cavity for accommodating the control assembly 21 and a lower valve body (i.e., controllable valve), and the stator 211 is screw-coupled with and forms a seal with the low reluctance high speed switching valve body. The stator 211 is sleeved with a coil, the stator 211 is provided with an electromagnetic driving cavity 25, a first elastic piece 26 is arranged in the electromagnetic driving cavity 25, the end part of the upper valve body, which is close to the lower valve body, is connected with a rotor 212 in a sliding manner, and the first elastic piece 26 is abutted against the rotor 212.
The material of the stator 211 according to the exemplary embodiment of the present invention may be a magnetizable material, for example: the material of the mover 212 is a magnetically attractable material, such as iron, copper, etc.
After the coil is electrified, the stator 211 magnetizes and adsorbs the mover 212, and the mover 212 is retracted against the elastic force of the first elastic member 26. A lower valve body is arranged between the upper valve body and the main valve body 3, the upper valve body and the lower valve body are welded into a whole, a first oil inlet channel is arranged on the lower valve body, and the first oil inlet channel can be of a round hole-shaped structure or of other shapes. Meanwhile, the lower valve body can be symmetrically provided with a first oil outlet channel by taking the first oil inlet channel as a center, and an oil groove 23 is formed between the first oil inlet channel and the first oil outlet channel for the first oil inlet channel to be communicated with the first oil outlet channel.
As shown in fig. 6, when the first oil inlet channel and the first oil outlet channel are connected, the thimble 22 abuts against the valve ball 12 through the first valve core main body inner hole 11, the valve ball 12 is separated from the first valve core main body inner hole 11, and when the first oil inlet channel and the first oil outlet channel are disconnected, the thimble 22 is separated from the valve ball 12 through the first valve core main body inner hole 11, and the valve ball 12 abuts against the first valve core main body inner hole 11.
The low-reluctance high-speed switch valve 2 further includes a magnetism isolating ring, which extends along the circumferential direction of the mover 212 and wraps the outer side wall of the mover 212 and the outer side wall of the electromagnetic driving member, and the magnetism isolating ring can make the magnetism of the magnetic field generated by the coil fully transferred to the stator 211, so as to ensure that the stator 211 can continuously attract the mover 212 to work.
The low-reluctance high-speed switch valve 2 further includes a sealing ring, the sealing ring extends along the circumference of the magnetism isolating ring and wraps the outer side wall of the magnetism isolating ring, the sealing ring is used for sealing the radial direction of the connection part of the rotor 212 and the magnetism isolating ring, blocking oil from entering the periphery of the rotor 212, and further reducing the reluctance.
The exemplary embodiment of the present invention also provides a combined pilot switching valve, which includes a main valve 3 and the low-reluctance high-speed switching valve 2 described in the above embodiment, where the low-reluctance high-speed switching valve 2 is used as a pilot valve to control the main valve 3 to be opened and closed.
Compared with the prior art, the combined pilot switch valve provided by the invention comprises the low-magnetic-resistance high-speed switch valve 2, the beneficial effects of the combined pilot switch valve comprise the beneficial effects of the low-magnetic-resistance high-speed switch valve 2, on the basis, the low-magnetic-resistance high-speed switch valve 2 is used as a pilot valve to control the main valve 3 to be opened and closed, when the low-magnetic-resistance high-speed switch valve 2 is used as the pilot valve, the low-magnetic-resistance high-speed switch valve 2 can control the connection and disconnection of an oil way of the low-magnetic-resistance high-speed switch valve 2 and the main valve 3, and the flow of the combined pilot switch valve can be adjusted through the cooperation of the low-magnetic-resistance high-speed switch valve 2 and the main valve 3, so that the combined pilot switch valve can adapt to flow requirements under different working conditions.
Fig. 5 shows a structural view of a combined pilot switching valve of an exemplary embodiment of the present invention, fig. 6 shows a sectional view of the combined pilot switching valve of an exemplary embodiment of the present invention, and as shown in fig. 5 and 6, the main valve 3 includes a main valve body 35, and a valve port assembly 34 and a main valve spool 32 provided in the main valve body 35 in an axial direction of the main valve body 35, the main valve spool 32 being close to the controllable valve, the valve port assembly 34 being far from the controllable valve, the main valve spool 32 having a second oil inlet passage 31, an inside of the main valve body 35 having a spool groove 33 and a second oil outlet passage communicating with the spool groove 33, the first oil outlet passage communicating with the second oil outlet passage, the valve port assembly 34 being provided in the spool groove 33, the main valve spool 32 extending into the spool groove 33.
In specific implementation, as shown in fig. 5, the low-reluctance high-speed switch valve 2 and the main valve 3 in the combined pilot switch valve according to the embodiment of the present invention may be detachably connected, or welded together. A control assembly 21 in the pilot valve controls the first oil inlet channel and the first oil outlet channel in the controllable valve to be switched on and off.
As shown in fig. 6, when the first oil inlet channel and the first oil outlet channel are conducted, the first oil inlet channel in the pilot valve is communicated with the second oil inlet channel 31 in the main valve 3, oil enters the first oil inlet channel through the second oil inlet channel 31 of the main valve core 32, oil flows into the first oil outlet channel communicated with the first oil inlet channel, the first oil outlet channel is communicated with the second oil outlet channel, and then flows out from the second oil outlet channel, so that hydraulic control of small flow of oil is realized. At this time, the inlet pressure of the valve port assembly 34 is greater than the sum of the gravity of the main valve spool 32 and the pressure of the second oil inlet passage 31 provided by the main valve spool 32 (which may be defined as the pressure generated by the internal measurement of the inlet main valve spool 32). Meanwhile, the main valve core 32 is separated from the valve port assembly 34 under the pressure difference, so that the oil inlet of the valve port assembly 34 is communicated with the valve core groove 33, and the oil at the moment passes through the valve core groove 33 communicated with the oil inlet of the valve port assembly 34, then directly enters the inlet of the second oil outlet channel from the valve core groove 33, and finally flows out of the second oil outlet channel, thereby realizing the hydraulic control of the oil with large flow output.
As shown in fig. 6, when the first oil inlet channel and the first oil outlet channel are disconnected, the first oil inlet channel in the pilot valve is communicated with the second oil inlet channel 31 in the main valve, oil enters the first oil inlet channel through the second oil inlet channel 31 of the main valve spool 32, the first oil inlet channel is disconnected from the first oil outlet channel, oil entering the first oil inlet channel cannot flow into the first oil outlet channel, oil cannot enter the main valve 3 through the second oil inlet channel 31, at this time, a hydraulic difference of oil cannot be generated when the oil cannot enter the main valve 3, and then, the pressure of the oil inlet of the valve port assembly 34 in the main valve 3 cannot cause the separation of the main valve spool 32 and the valve port assembly 34 due to the hydraulic change of the oil, and the abutment between the main valve spool 32 and the valve port assembly 34 can cause the failure of the hydraulic control of the oil with large flow, so that the hydraulic control of the oil with large flow output is stopped is realized.
According to the specific implementation process, when the pilot valve main valve 3 is matched for use, when the first oil inlet channel and the first oil outlet channel are connected, the oil passes through the main valve spool 32 to cause the pressure outside the main valve spool 32 to be greater than the pressure inside the main valve spool 32, the main valve spool 32 is separated from the valve port assembly 34, when the oil inlet of the valve port assembly 34 is communicated with the spool groove 33, most of the oil can enter the main valve 3 through the spool groove 33 communicated with the oil inlet of the valve port assembly 34, when the first oil inlet channel and the first oil outlet channel are disconnected, the oil does not circulate, the pressures on the inner side and the outer side of the main valve spool 32 are equal, the main valve spool 32 is propped against the valve port assembly 34, the oil inlet of the valve port assembly 34 is disconnected from the spool groove 33, the oil can not pass through the spool groove 33 communicated with the oil inlet of the valve port assembly 34, and the oil in the second oil inlet channel 31 is not circulated any more, so that the control of flow output stop is realized. When the pilot valve is independently used, when the first oil inlet channel and the first oil outlet channel are communicated, the pressure of the inner side of the main valve core is larger than the pressure of the outer side of the main valve core through the main valve core 32, a small part of oil can enter the main valve core 32 through the orifice, when the first oil inlet channel and the first oil outlet channel are disconnected, the oil does not circulate, the pressure of the two sides of the main valve core 32 is equal, and the oil cannot enter the main valve core 32. Therefore, the pilot valve is matched with the main valve, and the pilot valve can respond to different flow sizes of the main valve to meet the flow requirements of different working conditions.
In one alternative, as shown in fig. 6, the main valve spool 32 includes a first spool segment distributed along the axial direction of the main valve body 35 and a second spool segment in communication with the first spool segment, the first spool segment being distal from the oil inlet of the valve port assembly 34, the second spool segment being proximal to the oil inlet of the valve port assembly 34, the second spool segment being connected to the first spool segment, the main valve spool 32 further including a second elastic member, the first spool segment being connected to the second spool segment by the second elastic member.
In particular, when the first oil inlet channel is communicated with the first oil outlet channel, the oil enters the first oil inlet channel through the valve port, then flows into the first oil outlet channel communicated with the first oil inlet channel from the first oil inlet channel, flows out of the valve body of the combined pilot switching valve through the second oil outlet channel communicated with the first oil outlet channel, and generates a hydraulic difference of the oil when the oil flows into the first oil inlet channel through the second oil inlet channel 31, when the hydraulic difference of the oil flowing into the first oil inlet channel through the second oil inlet channel 31 is larger than the pressure generated inside the main valve core 32, the valve core groove 33 inside the main valve core 32 is separated from the valve port assembly 34, at this time, the large-flow oil enters through the valve core groove 33, and then the main valve core 32 overcomes the elastic force of the second elastic element oil inlet to move away from the valve port assembly 34 under the action of the oil hydraulic force, and the second oil flows out of the valve core groove 33 directly from the second oil inlet through the valve port assembly 34.
When the first oil inlet channel is disconnected from the first oil outlet channel, oil cannot enter the first oil inlet channel through the valve port, and because the oil cannot flow into the first oil inlet channel through the second oil inlet channel 31, no hydraulic pressure difference of the oil can be generated, and when the oil is not different, that is, the pressures on the inner side and the outer side of the main valve spool 32 are equal, at this time, the main valve spool 32 is abutted against the valve port assembly 34 under the elastic action of the second elastic member, (here, it is understood that one end of the second elastic member is abutted against the first spool section, and the end of the other end of the second elastic member is abutted against the main valve body 35, and the second elastic member is in a pressed state). At this time, the valve port assembly 34 abuts against the valve core groove 33, and oil cannot enter the valve core groove 33 through the oil inlet of the valve port assembly 34, so that the combined pilot switching valve is in a closed state, that is, a state of stopping output work.
Illustratively, when the first oil inlet passage and the first oil outlet passage are disconnected, the pressure of the oil inlet of the valve port assembly 34 is less than or equal to the pressure generated inside the main valve spool 32, the main valve spool 32 abuts against the valve port assembly 34, and the oil inlet of the valve port assembly 34 is disconnected from the spool groove 33. Here, it should be understood that when the coil is disconnected when the first oil inlet channel and the first oil outlet channel are disconnected, the main valve spool 32 abuts against the valve port assembly 34, the oil inlet of the valve port assembly 34 is disconnected from the spool groove 33, the controllable valve is a normally closed controllable valve, and the pressure of the oil inlet of the valve port assembly 34 is smaller than or equal to the pressure generated inside the main valve spool 32.
In practical application, the valve switch is used for conducting a first oil inlet channel and a first oil outlet channel of the controllable valve; when the pressure of the oil inlet of the valve port assembly 34 is smaller than or equal to the pressure generated inside the main valve spool 32, oil enters the second oil outlet channel through the second oil inlet channel 31, the first oil inlet channel and the first oil outlet channel of the main valve spool 32; when the oil inlet pressure of the valve port assembly 34 is greater than the pressure generated inside the main valve spool 32, the oil enters the second oil outlet passage through the valve port assembly 34 and the spool groove 33.
Here, the plurality of switch valves are configured in the oil circuit integrated block, the input port and the output port of the integrated block are provided with pressure sensors, it is to be understood that the pressure at the oil inlet of the valve port assembly 34 is obtained through the pressure sensors, the pressure sensors are in signal connection with the electromagnetic driving member, the pressure sensors can detect the pressure generated at the inner side of the main valve spool 32, when the pressure at the valve port assembly 34 changes, the pressure sensors can transmit the pressure at the oil inlet of the valve port assembly 34 to the electromagnetic driving member, the electromagnetic driving member receives the pressure value of the actual oil from the pressure sensors, the electromagnetic driving member can generate electromagnetic magnetic adsorption force, the controllable valve can be opened or closed, the hydraulic pressure difference is generated in the combined pilot switch valve, and the change of the hydraulic pressure difference enables the oil inlet of the valve port assembly 34 to be conducted with and disconnected from the spool groove 33.
The invention is suitable for a normally open valve, as shown in fig. 6, and the principle is that when an electromagnetic driving piece operates, a rotor 212 moves upwards under the guidance of a first elastic piece 26 so as to drive a thimble 22 to move upwards, a valve ball 12 moves upwards under the pushing of oil, the valve ball 12 seals an inner hole 11 of a first valve core main body, the oil in the inner hole 11 of the first valve core main body is not communicated with the oil in an inner hole 13 of a second valve core main body, and a first oil inlet channel and a first oil outlet channel are disconnected; when the electromagnetic driving member stops operating, the mover 212 moves downwards under the guidance of the first elastic member 26 so as to drive the thimble 22 to move downwards, and then the valve ball 12 is pushed to move downwards, the first valve core main body inner hole 11 is communicated with oil in the second valve core main body inner hole 13, and the first oil inlet channel is communicated with the first oil outlet channel.
Meanwhile, the invention is also suitable for normally closed valves, as shown in fig. 4, and the principle is that when the electromagnetic driving piece operates, the rotor 212 moves upwards under the guidance of the first elastic piece 26, so as to drive the thimble 22 to move upwards, the valve ball 12 moves upwards under the pushing of oil, the valve ball 12 does not block the inner hole 13 of the second valve core main body any more, the inner hole 11 of the first valve core main body is communicated with the oil in the inner hole 13 of the second valve core main body, and the first oil inlet channel is communicated with the first oil outlet channel; when the electromagnetic driving part stops running, the rotor 212 moves downwards under the guidance of the first elastic part 26 so as to drive the thimble 22 to move downwards, the valve ball 12 seals the inner hole 13 of the second valve core main body, the inner holes 11 and 13 of the first valve core main body are not communicated, and the oil in the first oil inlet channel and the oil in the first oil outlet channel are disconnected.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (11)
1. The low-reluctance high-speed switch valve is characterized by comprising a controllable valve and a control assembly, wherein the controllable valve is provided with a first oil inlet channel and a first oil outlet channel, and the control assembly is used for controlling the first oil inlet channel and the first oil outlet channel to be connected and disconnected;
the control assembly includes: the electromagnetic driving piece is provided with an electromagnetic driving cavity, one end of the first elastic piece is propped against the rotor, the rotor is used for controlling the connection and disconnection of the first oil inlet channel and the first oil outlet channel, a plurality of communication cavities are formed in the rotor and are communicated with the rotor along the axial direction of the rotor, one end of each communication cavity is communicated with the outlet of the first oil inlet channel, and the other end of each communication cavity is communicated with the electromagnetic driving cavity;
when the electromagnetic driving piece works, the rotor is driven by the electromagnetic driving piece to be close to the electromagnetic driving piece along the axial direction of the rotor, and the first oil inlet channel and the first oil outlet channel are disconnected; when the electromagnetic driving piece stops working, the rotor is far away from the electromagnetic driving piece along the axial direction of the rotor under the action of the elastic force of the first elastic piece, and the first oil inlet channel and the first oil outlet channel are communicated;
or when the electromagnetic driving piece works, the rotor is driven by the electromagnetic driving piece to be close to the electromagnetic driving piece along the axial direction of the rotor, and the first oil inlet channel and the first oil outlet channel are communicated; when the electromagnetic driving piece stops working, the rotor is far away from the electromagnetic driving piece along the axial direction of the rotor under the action of the elastic force of the first elastic piece, and the first oil inlet channel and the first oil outlet channel are disconnected.
2. The low reluctance high speed switching valve according to claim 1, further comprising a magnetism isolating ring which is wrapped around an outer side wall of the mover and an outer side wall of the electromagnetic driving member along a circumferential extension of the mover.
3. The low reluctance high speed switching valve according to claim 2, further comprising a sealing ring wrapped around an outer sidewall of the magnetism isolating ring along a circumferential extension of the magnetism isolating ring.
4. The low-reluctance high-speed switch valve according to claim 1, wherein the controllable valve is provided with a switch valve core, the switch valve core comprises a valve core body, a valve ball and a thimble, the valve core body is provided with a first oil inlet channel, the valve ball is arranged in the first oil inlet channel, a first valve core body inner hole is formed in one end, close to the control assembly, of the valve core body, the thimble limits the rising amplitude of the valve ball through the first valve core body inner hole, a second valve core body inner hole is formed in one end, far away from the control assembly, of the valve core body, the aperture of the second valve core body inner hole is smaller than the diameter of the valve ball, and the second valve core body inner hole is used for limiting the falling amplitude of the valve ball.
5. The low reluctance high speed switching valve according to claim 4, further comprising an oil groove formed in an end of the spool body near the control assembly, the oil groove being respectively communicated with the outlet of the first oil inlet passage and the inlet of the first oil outlet passage, the ejector pin passing through the oil groove and slidably extending into the first oil inlet passage through the inner hole of the first spool body, and the end of the ejector pin extending into the first oil inlet passage being engaged with the valve ball.
6. The low reluctance high speed switching valve according to claim 4, wherein horizontal projections of the plurality of the communication chambers on the ejector pin intersect with horizontal projections of the ejector pin.
7. The low reluctance high speed switching valve according to claim 1, wherein the electromagnetic driving member includes a stator having the electromagnetic driving chamber and a coil sleeved on the stator, and the first elastic member is disposed in the electromagnetic driving chamber.
8. A combined pilot switching valve, characterized by comprising a main valve and the low-reluctance high-speed switching valve according to any one of claims 1 to 7, wherein the low-reluctance high-speed switching valve controls the opening and closing of the main valve as a pilot valve.
9. The combined pilot switching valve according to claim 8, wherein the main valve includes a main valve body, and a valve port assembly and a main valve spool provided in the main valve body in an axial direction of the main valve body, the main valve spool being close to the controllable valve, the valve port assembly being remote from the controllable valve; the main valve spool is provided with a second oil inlet channel, the inside of the main valve body is provided with a spool groove and a second oil outlet channel communicated with the spool groove, the first oil outlet channel is communicated with the second oil outlet channel, the valve port assembly is arranged in the spool groove, and the main valve spool stretches into the spool groove.
10. The combined pilot switching valve of claim 9, wherein the main valve spool comprises a first spool section distributed along an axial direction of the main valve body and a second spool section in communication with the first spool section, the first spool section being remote from an oil inlet of the valve port assembly, the second spool section being proximate to the oil inlet of the valve port assembly, the second spool section being connected to the first spool section, the main valve spool further comprising a second resilient member through which the first spool section is resiliently connected to the second spool section.
11. The combined pilot switching valve of claim 9, wherein when the first oil inlet passage and the first oil outlet passage are in communication, the first oil inlet passage communicates with the second oil inlet passage, the pressure of the oil inlet of the valve port assembly is greater than the pressure generated inside a main valve spool of the oil inlet, the main valve spool is separated from the valve port assembly, and the oil inlet of the valve port assembly communicates with the spool groove;
when the first oil inlet channel and the first oil outlet channel are disconnected, the first oil inlet channel is communicated with the second oil inlet channel, the pressure of an oil inlet of the valve port assembly is smaller than the pressure generated by the inner side of a main valve core of the oil inlet, the main valve core is propped against the valve port assembly, and the oil inlet of the valve port assembly is disconnected with the valve core groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311423179.7A CN117432669A (en) | 2023-10-30 | 2023-10-30 | Low-magnetic-resistance high-speed switch valve and combined pilot switch valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311423179.7A CN117432669A (en) | 2023-10-30 | 2023-10-30 | Low-magnetic-resistance high-speed switch valve and combined pilot switch valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117432669A true CN117432669A (en) | 2024-01-23 |
Family
ID=89557990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311423179.7A Pending CN117432669A (en) | 2023-10-30 | 2023-10-30 | Low-magnetic-resistance high-speed switch valve and combined pilot switch valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117432669A (en) |
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2023
- 2023-10-30 CN CN202311423179.7A patent/CN117432669A/en active Pending
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