CN111288205A - Recoil type electromagnetic valve and electro-hydraulic control system - Google Patents

Recoil type electromagnetic valve and electro-hydraulic control system Download PDF

Info

Publication number
CN111288205A
CN111288205A CN202010269460.XA CN202010269460A CN111288205A CN 111288205 A CN111288205 A CN 111288205A CN 202010269460 A CN202010269460 A CN 202010269460A CN 111288205 A CN111288205 A CN 111288205A
Authority
CN
China
Prior art keywords
iron core
movable iron
channel
assembly
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010269460.XA
Other languages
Chinese (zh)
Other versions
CN111288205B (en
Inventor
邓岩
鄂威
卜义昭
李忠航
张馨
周天丽
于杨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anshan Solenoid Valve Co ltd
Original Assignee
Anshan Solenoid Valve Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anshan Solenoid Valve Co ltd filed Critical Anshan Solenoid Valve Co ltd
Priority to CN202010269460.XA priority Critical patent/CN111288205B/en
Publication of CN111288205A publication Critical patent/CN111288205A/en
Application granted granted Critical
Publication of CN111288205B publication Critical patent/CN111288205B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F16K31/0655—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise

Landscapes

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

Abstract

The invention relates to the technical field of hydraulic valve bodies, in particular to a recoil type electromagnetic valve and an electro-hydraulic control system. The recoil electromagnetic valve comprises a valve body, a valve cover, a coil, a movable iron core assembly and a piston assembly, wherein the valve body is provided with a second channel, a first channel and a communicating groove, and the communicating groove is communicated with an inlet of the second channel and an outlet of the first channel; the valve cover is arranged on the valve body, and a pressure compensation chamber is arranged in the valve cover; the movable iron core assembly is arranged in the pressure compensation chamber, a pressure compensation through hole is formed in the piston assembly, and the piston assembly is arranged in the communicating groove; under the state that the coil is powered off, the movable iron core assembly covers the pressure compensating through hole; and under the state that the coil is electrified, the pressure supplementing through hole is communicated with the second channel and the communicating groove. The electro-hydraulic control system comprises the recoil type electromagnetic valve. The recoil type electromagnetic valve and the electro-hydraulic control system reduce the power required by generating electromagnetic force, thereby reducing the volume.

Description

Recoil type electromagnetic valve and electro-hydraulic control system
Technical Field
The invention relates to the technical field of hydraulic valve bodies, in particular to a recoil type electromagnetic valve and an electro-hydraulic control system.
Background
The recoil type electromagnetic valve is suitable for the working environment with zero pressure difference or high pressure, and has the characteristics of zero pressure difference opening and closing, high pressure resistance, long service life and the like. The working principle is as follows: when the power is on, the electromagnetic valve opens the auxiliary valve first, the pressure in the lower cavity of the main valve is larger than the pressure in the upper cavity, and the valve is opened by utilizing the simultaneous action of the pressure difference and the electromagnetic force; when the power is cut off, the auxiliary valve pushes the closing member to move downwards by utilizing spring force or medium pressure so as to close the valve.
The recoil electromagnetic valve in the related art adopts a high-power electromagnetic driving device to directly drive moving parts in the valve to be opened or closed, and the volume of the conventional recoil electromagnetic valve is larger due to the larger volume of the electromagnetic driving device, so that the requirement on installation and maintenance space is higher.
Disclosure of Invention
The first purpose of the present invention is to provide a recoil type solenoid valve, so as to solve the technical problem that the recoil type solenoid valve in the prior art has high requirements for installation and maintenance space due to large volume.
The second purpose of the invention is to provide an electro-hydraulic control system, so as to solve the technical problem that the installation and maintenance space of the electro-hydraulic control system is excessively high due to the large volume of a recoil type electromagnetic valve in the prior art to a certain extent.
In order to achieve the above object, the present invention provides the following technical solutions;
based on the first purpose, the invention provides a recoil type electromagnetic valve, which comprises a valve body, a valve cover, a coil, a movable iron core assembly and a piston assembly, wherein a second channel, a first channel and a communicating groove are arranged in the valve body, and the bottom of the communicating groove is communicated with an inlet of the second channel and an outlet of the first channel;
the valve cover is arranged on the valve body corresponding to the notch of the communicating groove in a covering manner, and a pressure supplementing cavity communicated with the notch of the communicating groove is arranged inside the valve cover;
the movable iron core assembly is arranged in the pressure compensation chamber, a pressure compensation through hole is formed in the piston assembly, and the piston assembly is arranged in the communicating groove;
under the state that the coil is powered off, the movable iron core assembly compresses and covers the piston assembly at the joint of the second channel and the communication groove, the movable iron core assembly covers the pressure supplementing through hole, and the medium pressure in the pressure supplementing cavity is greater than that in the second channel;
under the state that the coil is electrified, the movable iron core assembly can move in the pressure supplementing cavity towards the direction far away from the piston assembly, so that the pressure supplementing through hole is communicated with the second channel and the communicating groove.
In any of the above solutions, optionally, the piston assembly includes a piston main body and a first elastic member;
the piston body comprises a cover part and a guide post, and the guide post is connected to the surface of the cover part, which faces away from the second channel;
the first elastic piece is sleeved on the outer side of the guide column, and the pressure supplementing through hole is formed in the guide column and penetrates through the sealing cover part;
and under the state that the coil is powered off, the movable iron core assembly compresses the first elastic piece so as to compress and cover the cover part at the joint of the second channel and the communication groove.
In any of the above technical solutions, optionally, the piston main body further includes a first sealing gasket and a retainer ring;
the surface of the cover portion facing the second channel is provided with an installation groove, the first sealing gasket is embedded in the installation groove, and the retainer ring is arranged on the surface of the first sealing gasket facing the second channel.
In any of the above technical solutions, optionally, the recoil electromagnetic valve further includes a guide portion surrounding an outer ring edge of the cover portion, and a balance chamber is formed between the guide portion and the guide post;
the cover portion is provided with a balance through hole communicated between the balance chamber and the first channel.
In any of the above technical solutions, optionally, the movable iron core assembly includes a movable iron core body, a buffer column, and a second elastic member;
a buffer chamber is arranged in the movable iron core body, a pilot through hole is arranged on the side wall of the movable iron core body, a guide through hole is formed at the end part of the movable iron core body, which is far away from the piston assembly, and the pilot through hole and the guide through hole are communicated with the pressure compensation chamber and the buffer chamber;
the buffer column comprises a first constant diameter part, a second constant diameter part and an expanding part connected between the first constant diameter part and the second constant diameter part, and the radial size of the expanding part is larger than that of the first constant diameter part and that of the second constant diameter part;
the first constant diameter part and the diameter expanding part are positioned in the buffer cavity, and the second constant diameter part is arranged in the guide through hole in a penetrating mode;
the second elastic piece is sleeved on the first constant diameter portion, the first end of the second elastic piece abuts against the diameter expanding portion, and the second end of the second elastic piece is connected with the movable iron core body.
In any of the above technical solutions, optionally, the movable iron core assembly further includes an aligning head disposed in the buffer chamber, the aligning head includes an aligning portion and a positioning column, one end of the aligning portion is arc-surface shaped, and the positioning column is disposed at the other end of the aligning portion;
the second end of the second elastic element is sleeved on the positioning column and is abutted against the aligning portion, and the aligning portion is abutted against the movable iron core body.
In any of the above technical solutions, optionally, the movable iron core assembly further includes a second sealing gasket and a nut;
an external thread is formed at one end, facing the piston assembly, of the movable iron core body, and the nut is in threaded connection with the movable iron core body through the external thread, so that the second sealing gasket is limited between the movable iron core body and the nut;
the orientation of nut piston assembly's terminal surface is provided with dodges the through-hole to make movable iron core assembly can pass through the second is sealed fills up with piston assembly contacts.
In any of the above technical solutions, optionally, the recoil solenoid valve further includes a housing assembly, and the housing assembly is covered on the outer sides of the valve body and the coil;
and the shell assembly comprises a shell body and a cable fixing assembly arranged on the shell body.
In any of the above technical solutions, optionally, the cable fixing assembly includes a wire holder disposed on the housing body, and a socket and a wire nut sequentially connected to the wire holder;
the inside of socket is provided with the gum cover, the socket with be provided with the third sealed pad between the wire holder.
Based on the second objective, the electro-hydraulic control system provided by the invention comprises the recoil type solenoid valve according to any one of the above technical solutions.
By adopting the technical scheme, the invention has the beneficial effects that:
the invention provides a recoil electromagnetic valve which comprises a valve body, a valve cover, a coil, a movable iron core assembly and a piston assembly. The valve body is internally provided with a second channel, a first channel and a communicating groove, and the groove bottom of the communicating groove is communicated with the inlet of the second channel and the outlet of the first channel. Under the state of coil outage, under the action of gravity of the movable iron core assembly, medium pressure of a pressure supplementing cavity in the valve cover and self gravity of the piston assembly, the piston assembly can be enabled to stably plug the inlet of the second channel, and therefore the medium in the first channel is prevented from flowing to the second channel. Under the state that the coil is electrified, the movable iron core assembly firstly opens a sealing surface between the starting iron core assembly and the pressure supplementing through hole under the action of electromagnetic force, so that high-pressure liquid in the pressure supplementing cavity enters the second channel through the pressure supplementing through hole, a recoil effect on the piston assembly is formed, and the piston assembly opens an inlet of the second channel under the action of medium pressure difference. In conclusion, a two-stage valve opening process is formed, so that the recoil type electromagnetic valve realizes the stability of instantaneous opening and closing under a pressure difference or high pressure state, and the power required by the generation of electromagnetic force of the recoil type electromagnetic valve is reduced to the maximum extent, so that the integral volume of the recoil type electromagnetic valve is effectively reduced, the requirements on installation and maintenance space are obviously reduced, and the application range is expanded.
The electro-hydraulic control system comprises the recoil type electromagnetic valve, so that all the beneficial effects of the recoil type electromagnetic valve can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a recoil solenoid valve according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a piston assembly of a recoil solenoid valve according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a movable iron core assembly of a recoil solenoid valve according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a housing assembly of a recoil solenoid valve according to a second embodiment of the present invention.
Icon: 1-a valve body; 2-a piston assembly; 201-a guide; 202-a first gasket; 203-a check ring; 204-balance via holes; 205-pressure compensating through holes; 206-an equilibrium chamber; 3-a first elastic member; 5-a movable iron core assembly; 501-moving iron core body; 502-a buffer column; 503-a second elastic member; 504-a centering head; 505-flat pad; 506-a second gasket; 507-screw cap; 6-valve cover; 7-a seal; 8-a magnetic conductive plate; 9-a coil; 10-a housing assembly; 1001-housing body; 1002-wire holder; 1003-third gasket; 1004-screw; 1005-a socket; 1006-flat washer; 1007-a rubber sleeve; 1008-terminal nuts; 14-cap nut; 15-a first channel; 16-a second channel; 17-communicating groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
The recoil type electromagnetic valve provided by the embodiment is used for an electro-hydraulic control system.
Referring to fig. 1 to 4, the recoil type solenoid valve provided in this embodiment includes a valve body 1, a valve cover 6, a coil 9, a plunger assembly 5 and a piston assembly 2, a second passage 16, a first passage 15 and a communicating groove 17 are provided inside the valve body 1, and a groove bottom of the communicating groove 17 communicates an inlet of the second passage 16 with an outlet of the first passage 15. That is, when the recoil type solenoid valve is in an open state at the junctions of the first passage 15 and the second passage 16 at the communication grooves 17, respectively, the medium can flow between the first passage 15 and the second passage 16.
The valve cover 6 is covered on the valve body 1 corresponding to the notch of the communicating groove 17, and a pressure supplementing cavity communicated with the notch of the communicating groove 17 is arranged in the valve cover 6. Optionally, a seal 7 is provided at the connection between the bonnet 6 and the valve body 1 to prevent leakage of media from the plenum chamber and the slot of the connecting groove through the connection therebetween.
The outside of valve gap 6 is twined and is had coil 9, and movable iron core subassembly 5 sets up in the benefit pressure cavity, and movable iron core can be at the pressure cavity reciprocating motion of benefit to be close to or keep away from piston assembly 2.
The inside of the piston assembly 2 is provided with a pressure compensating through hole 205, and the piston assembly 2 is arranged in the communicating groove 17, the piston assembly 2 can reciprocate in the communicating groove 17 to be close to or far away from the inlet of the second channel 16, and then the inlet of the second channel 16 is closed or opened.
Under the condition that the coil 9 is powered off, the movable iron core assembly 5 presses and covers the piston assembly 2 at the joint of the second channel 16 and the communication groove 17, and the movable iron core assembly 5 covers the pressure supplementing through hole 205. In the use state, the recoil type solenoid valve is generally required to be in a vertical state, namely, the movable iron core assembly 5 is arranged in a posture of being positioned right above the piston assembly 2. Therefore, in the deenergized state of the coil 9, there is no medium in the second passage 16, that is, the pressure acting on the piston assembly 2 is zero, so that under the action of the medium pressure in the pressure compensation chamber, the gravity of the plunger assembly 5 and the gravity of the piston assembly 2, the piston assembly 2 is pressed against and covers the connection between the second passage 16 and the connection groove, thereby achieving the purpose of cutting off the communication path between the first passage 15 and the second passage 16, and preventing the medium in the first passage 15 from flowing into the second passage 16 through the communication groove 17. And because the movable iron core assembly 5 is covered on the pressure compensating through hole 205, the medium in the pressure compensating chamber can not enter the second channel 16 through the pressure compensating through hole 205 in the state that the coil 9 is powered off.
In the state where the coil 9 is energized, the plunger assembly 5 can move in the pressure compensation chamber in a direction away from the piston assembly 2 so that the pressure compensation through hole 205 communicates the second passage 16 with the communication groove 17. At this time, the coil 9 after being powered on generates electromagnetic force, the movable iron core assembly 5 is far away from the piston assembly 2 under the action of the electromagnetic force until the movable iron core assembly abuts against the top of the pressure supplementing chamber, so that the movable iron core opens the pressure supplementing through hole 205 of the piston assembly 2, a medium in the pressure supplementing chamber can enter the second channel 16, the pressure of the medium in the second channel 16 is gradually increased, and then the piston assembly 2 is subjected to resultant force along the direction deviating from the first channel 15, so that the piston assembly 2 is smoothly opened.
The recoil electromagnetic valve in the embodiment comprises a valve body 1, a valve cover 6, a coil 9, a movable iron core assembly 5 and a piston assembly 2. The valve body 1 is internally provided with a second channel 16, a first channel 15 and a communication groove 17, and the groove bottom of the communication groove 17 is communicated with the inlet of the second channel 16 and the outlet of the first channel 15. Under the condition that the coil 9 is in a power-off state, the piston assembly 2 can stably block the outlet of the second channel 16 under the action of the gravity of the movable iron core assembly 5, the medium pressure of the pressure supplementing chamber in the valve cover 6 and the self gravity of the piston assembly 2, so that the medium in the first channel 15 is prevented from flowing to the second channel 16. Under the state that the coil 9 is electrified, the movable iron core assembly 5 firstly opens a sealing surface between the starting iron core assembly 5 and the pressure supplementing through hole 205 under the action of electromagnetic force, so that high-pressure liquid in the pressure supplementing cavity enters the second channel 16 through the pressure supplementing through hole 205, a recoil action on the piston assembly 2 is formed, and then the piston assembly 2 opens an inlet of the second channel 16 under the action of medium pressure difference. In conclusion, a two-stage development process is formed, so that the stability of instantaneous opening and closing of the recoil type electromagnetic valve under a pressure difference or high-pressure state is realized, the power required by the generation of electromagnetic force of the recoil type electromagnetic valve is reduced to the maximum extent, and the overall volume of the recoil type electromagnetic valve is effectively reduced.
In an alternative to this embodiment, shown in fig. 2, the piston assembly 2 comprises a piston body and a first resilient member 3.
The piston main part includes closing cap portion and guide post, the guide post is connected in the surface that deviates from in second passageway 16 of closing cap portion, the surface area that defines closing cap portion face to moving iron core subassembly 5 and contact with the medium is first area, the surface area that closing cap portion face to second passageway 16 and contact with the medium is the second area, because first area equals the second area and subtracts the area of guide post and closing cap portion junction, therefore first area is obviously less than the second area, thereby fill with the medium in second passageway 16 after, the resultant force of the medium power of applying at the closing cap portion is pointed to moving iron core subassembly 5 by second passageway 16, and then make the surface that closing cap portion faced second passageway 16 can open and close the entry of second passageway 16 with high efficiency.
The first elastic element 3 is sleeved outside the guide post, and the pressure compensating through hole 205 is arranged in the guide post and penetrates through the sealing cover part. In the state that the coil 9 is deenergized, the movable iron core assembly 5 presses the first elastic member 3, so that the cover portion presses and covers the joint of the second channel 16 and the communication groove 17, that is, the external force pressing the cover portion to the inlet of the second channel 16 further includes the pressure of the first elastic member 3.
By limiting the piston assembly 2 to comprise the first elastic part 3, on one hand, under the power-off state of the coil 9, the pressure on the sealing cover part can be increased, on the other hand, under the power-on state of the coil 9, the first elastic part 3 can be restored, so that the pressure provided by the first elastic part 3 is removed, the piston assembly 2 is opened more easily, the required electromagnetic force can be further reduced, and the volume of the recoil type electromagnetic valve can be further reduced.
In an alternative of this embodiment, the piston body further comprises a first seal gasket 202 and a retainer ring 203;
the surface of the cover portion facing the second passage 16 is formed with a mounting groove, and the first gasket 202 is fitted in the mounting groove, whereby the first gasket 202 and the cover portion can be reliably connected.
The retainer ring 203 is disposed on the surface of the first gasket 202 facing the second channel 16, so that a positioning connection is formed between the first gasket 202 and the mounting groove, which is beneficial to ensuring the flatness of the first gasket 202, thereby improving the sealing degree of the first gasket 202 to the outlet of the second channel 16, and facilitating the replacement of the first gasket 202 when the first gasket 202 fails.
In the alternative of this embodiment, the recoil electromagnetic valve further includes the guide part 201 that encloses in the outer lane edge of closing cap portion, forms balanced cavity 206 between guide part 201 and the guide post, can improve the whole straightness that hangs down of reciprocating motion in the intercommunication groove 17 of piston assembly 2 through setting up guide part 201, avoids appearing the slope dislocation.
The sealing cover portion is provided with a balance through hole 204 communicated between the balance chamber 206 and the first channel 15, and by arranging the balance through hole 204 communicated with the balance chamber 206, under the state that the coil 9 is electrified, the medium in the first channel 15 can also enter the second channel 16 through the balance through hole 204, the balance chamber 206 and the pressure supplementing through hole 205 in sequence, so that the pressurizing duration of the second channel 16 is favorably shortened, and the opening duration of the piston assembly 2 is favorably shortened. In addition, because the balance through hole 204 is in a normally open state, the medium in the first channel 15 can always flow into the pressure compensation chamber and the communication groove 17, so that when the coil is electrified, the medium can timely enter the second channel 16 through the pressure compensation through hole 205.
Optionally, the aperture of the balance through hole 204 is smaller than the aperture of the pressure compensation through hole 205, when the medium in the pressure compensation chamber starts to flow into the second channel 16 through the pressure compensation through hole 205, the medium flow rate of the medium entering the communicating groove 17 is smaller than the medium flow rate of the medium flowing out of the communicating groove 17, so that the medium pressure in the pressure compensation chamber tends to decrease at least for a period of time, and the pressure of the second channel 16 may be greater than the pressure of the pressure compensation chamber, so that the surface of the cover portion facing the second channel 16 can further efficiently open and close the inlet of the second channel 16.
In an alternative of this embodiment, referring to fig. 3, the plunger assembly 5 includes a plunger body 501, a buffer column 502 and a second elastic member 503.
The inside of moving iron core body 501 is provided with the buffer chamber, and the lateral wall of moving iron core body 501 is provided with the guide through-hole, and the tip that deviates from in piston assembly 2 of moving iron core body 501 is formed with the direction through-hole, and the guide through-hole all communicates with the repression chamber and buffer chamber with the direction through-hole.
The strut 502 includes a first constant diameter portion, a second constant diameter portion, and an enlarged diameter portion connected between the first constant diameter portion and the second constant diameter portion, and a radial dimension of the enlarged diameter portion is larger than those of the first constant diameter portion and the second constant diameter portion.
First constant diameter portion and hole enlargement portion are located the cushion chamber, and the second constant diameter portion wears to locate in the direction through-hole, and the outer lane and the direction through-hole phase-match of second constant diameter portion, and second constant diameter portion can be in the direction through-hole along axial displacement. The second elastic member 503 is sleeved on the first constant diameter portion, a first end of the second elastic member 503 abuts against the diameter expanding portion, and a second end of the second elastic member 503 is connected with the movable iron core body 501.
Specifically, in the state where the coil 9 is deenergized, the buffer post 502 moves toward the side of the guide through hole in the buffer chamber until the diameter-enlarged portion abuts against the wall surface of the guide through hole under the action of the second elastic member 503. Under the circumstances that coil 9 got electricity, move iron core assembly 5 and wholly move to the direction that deviates from in piston assembly 2, move iron core assembly 5 and strike the top of repressing the cavity through second constant diameter portion to through buffer column 502 under the dual function of buffer column 503 to the compression of second elastic component 503 and medium through guide's through-hole outflow buffer cavity, play the cushioning effect, avoid moving iron core assembly 5 and cause violent striking to the top of repressing the cavity, and then be favorable to noise reduction.
In an alternative of this embodiment, the movable iron core assembly 5 further includes an aligning head 504 disposed in the buffer chamber, the aligning head 504 includes an aligning portion and a positioning column, one end of the aligning portion is arc-surface shaped, and the positioning column is disposed at the other end of the aligning portion; the second end of the second elastic member 503 is sleeved on the positioning column and abuts against the aligning portion, and the aligning portion abuts against the movable iron core body 501.
Optionally, one end of the centering portion is partially spherical. Through setting up this aligning head 504, can play the effect of resetting from the centering to make movable iron core subassembly 5 open and close more stably, be favorable to prolonging this movable iron core subassembly 5 and this recoil solenoid valve's life.
In an alternative of this embodiment, the plunger assembly 5 further includes a second sealing pad 506 and a nut 507.
An external thread is formed at one end of the movable iron core body 501 facing the piston assembly 2, and the nut 507 is screwed on the movable iron core body 501 through the external thread, so that the second sealing gasket 506 is limited between the movable iron core body 501 and the nut 507, the convenience in dismounting and mounting the second sealing gasket 506 is improved, and the second sealing gasket 506 can be protected through the nut 507.
The end surface of the nut 507 of the second gasket 506 facing the piston assembly 2 is provided with an escape through hole so that the moving core assembly 5 can be brought into contact with the piston assembly 2 through the second gasket 506. That is, by providing the relief through hole, a portion of the second seal 506 can be exposed to the piston assembly 2, which is advantageous for improving the sealing performance of the pressure compensating through hole 205.
Optionally, a flat gasket 505 is disposed between the centering portion and the second gasket 506 to buffer the impact force of the centering portion on the second gasket 506.
In an alternative of the present embodiment, referring to fig. 4, the recoil type solenoid valve further includes a housing assembly 10, the housing assembly 10 is housed outside the valve body 1 and the coil 9; and the housing assembly 10 includes a housing body 1001 and a cable fixing assembly provided to the housing body 1001. By arranging the housing assembly 10, the electrical safety of the coil 9 is advantageously ensured.
Optionally, the top end of the housing body 1001 and the top end of the bonnet 6 are fixed by a cap nut 14, and a sealing member 7 is disposed between the cap nut 14 and the housing body 1001.
Optionally, a magnetic conductive plate 8 is further disposed in the housing body 1001, and a sealing member 7 is disposed at a connection position of the magnetic conductive plate 8 and the housing body 1001.
In an alternative of this embodiment, the cable fixing assembly includes a wire holder 1002 provided to the housing body 1001, and a socket 1005 and a wire nut 1008 connected to the wire holder 1002 in this order; a rubber sleeve 1007 is arranged inside the socket 1005, and a third sealing gasket 1003 is arranged between the socket 1005 and the wire holder 1002.
Alternatively, the socket 1005 and the wire holder 1002 are fastened by a screw 1004, a rubber sleeve 1007 is mounted inside the socket 1005, and a limit nut is screwed into the socket 1005 and presses the rubber sleeve 1007 by a flat washer 1006 to play a role of pressing and sealing the cable.
Example two
The second embodiment provides an electro-hydraulic control system, the embodiment includes the recoil type solenoid valve of the first embodiment, the technical features of the recoil type solenoid valve disclosed in the first embodiment are also applicable to the embodiment, and the technical features of the recoil type solenoid valve disclosed in the first embodiment are not described repeatedly.
The electro-hydraulic control system in this embodiment has the advantages of the recoil type solenoid valve of the first embodiment, and the advantages of the recoil type solenoid valve disclosed in the first embodiment are not described repeatedly herein.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention. Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Claims (10)

1. A recoil type electromagnetic valve is characterized by comprising a valve body, a valve cover, a coil, a movable iron core assembly and a piston assembly, wherein a second channel, a first channel and a communicating groove are arranged in the valve body, and the bottom of the communicating groove is communicated with an inlet of the second channel and an outlet of the first channel;
the valve cover is arranged on the valve body corresponding to the notch of the communicating groove in a covering manner, and a pressure supplementing cavity communicated with the notch of the communicating groove is arranged inside the valve cover;
the movable iron core assembly is arranged in the pressure compensation chamber, a pressure compensation through hole is formed in the piston assembly, and the piston assembly is arranged in the communicating groove;
under the state that the coil is powered off, the movable iron core assembly compresses and covers the piston assembly at the joint of the second channel and the communication groove, and the movable iron core assembly covers the pressure supplementing through hole;
under the state that the coil is electrified, the movable iron core assembly can move in the pressure supplementing cavity towards the direction far away from the piston assembly, so that the pressure supplementing through hole is communicated with the second channel and the communicating groove.
2. The recoil solenoid valve of claim 1, wherein the piston assembly comprises a piston body and a first resilient member;
the piston body comprises a cover part and a guide post, and the guide post is connected to the surface of the cover part, which faces away from the second channel;
the first elastic piece is sleeved on the outer side of the guide column, and the pressure supplementing through hole is formed in the guide column and penetrates through the sealing cover part;
and under the state that the coil is powered off, the movable iron core assembly compresses the first elastic piece so as to compress and cover the cover part at the joint of the second channel and the communication groove.
3. The recoil solenoid valve of claim 2, wherein the piston body further comprises a first seal and a retainer ring;
the surface of the cover portion facing the second channel is provided with an installation groove, the first sealing gasket is embedded in the installation groove, and the retainer ring is arranged on the surface of the first sealing gasket facing the second channel.
4. The recoil solenoid valve of claim 3, further comprising a pilot portion circumscribing an outer circumferential edge of the cover portion, the pilot portion and the pilot post forming a balancing chamber therebetween;
the cover portion is provided with a balance through hole communicated between the balance chamber and the first channel.
5. The recoil solenoid valve of claim 1, wherein the plunger assembly comprises a plunger body, a damping post, and a second resilient member;
a buffer chamber is arranged in the movable iron core body, a pilot through hole is arranged on the side wall of the movable iron core body, a guide through hole is formed at the end part of the movable iron core body, which is far away from the piston assembly, and the pilot through hole and the guide through hole are communicated with the pressure compensation chamber and the buffer chamber;
the buffer column comprises a first constant diameter part, a second constant diameter part and an expanding part connected between the first constant diameter part and the second constant diameter part, and the radial size of the expanding part is larger than that of the first constant diameter part and that of the second constant diameter part;
the first constant diameter part and the diameter expanding part are positioned in the buffer cavity, and the second constant diameter part is arranged in the guide through hole in a penetrating mode;
the second elastic piece is sleeved on the first constant diameter portion, the first end of the second elastic piece abuts against the diameter expanding portion, and the second end of the second elastic piece is connected with the movable iron core body.
6. The recoil electromagnetic valve of claim 5, wherein the plunger assembly further comprises an aligning head disposed in the buffer chamber, the aligning head comprises an aligning portion and a positioning post, one end of the aligning portion is arc-shaped, and the positioning post is disposed at the other end of the aligning portion;
the second end of the second elastic element is sleeved on the positioning column and is abutted against the aligning portion, and the aligning portion is abutted against the movable iron core body.
7. The recoil solenoid valve of claim 5, wherein the plunger assembly further comprises a second seal and a nut;
an external thread is formed at one end, facing the piston assembly, of the movable iron core body, and the nut is in threaded connection with the movable iron core body through the external thread, so that the second sealing gasket is limited between the movable iron core body and the nut;
the orientation of nut piston assembly's terminal surface is provided with dodges the through-hole to make movable iron core assembly can pass through the second is sealed fills up with piston assembly contacts.
8. The recoil solenoid valve of claim 1, further comprising a housing assembly housed outside the valve body and the coil;
and the shell assembly comprises a shell body and a cable fixing assembly arranged on the shell body.
9. The recoil solenoid valve of claim 8, the cable securing assembly comprising a wire holder disposed on the housing body and a socket and a wire nut connected to the wire holder in sequence;
the inside of socket is provided with the gum cover, the socket with be provided with the third sealed pad between the wire holder.
10. Electro-hydraulic control system, characterized by comprising a recoil solenoid valve according to any one of claims 1 to 9.
CN202010269460.XA 2020-04-08 2020-04-08 Recoil type electromagnetic valve and electrohydraulic control system Active CN111288205B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010269460.XA CN111288205B (en) 2020-04-08 2020-04-08 Recoil type electromagnetic valve and electrohydraulic control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010269460.XA CN111288205B (en) 2020-04-08 2020-04-08 Recoil type electromagnetic valve and electrohydraulic control system

Publications (2)

Publication Number Publication Date
CN111288205A true CN111288205A (en) 2020-06-16
CN111288205B CN111288205B (en) 2024-07-05

Family

ID=71019404

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010269460.XA Active CN111288205B (en) 2020-04-08 2020-04-08 Recoil type electromagnetic valve and electrohydraulic control system

Country Status (1)

Country Link
CN (1) CN111288205B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08135839A (en) * 1994-11-10 1996-05-31 Konan Denki Kk Pilot type double acting solenoid valve
US20130248021A1 (en) * 2010-12-01 2013-09-26 Andreas Förster Actuator For An Adjustable Damper-Valve Device
CN205504140U (en) * 2016-03-28 2016-08-24 奉化市安利特机械有限公司 Pesticide is electromagnetism guide head for atomizer
CN106979371A (en) * 2017-04-14 2017-07-25 金华市德诺电器有限公司 A kind of magnetic valve
CN208651767U (en) * 2018-07-09 2019-03-26 宁波盛达阳光自动化科技有限公司 A kind of novel pneumatic solenoid valve
CN211875244U (en) * 2020-04-08 2020-11-06 鞍山电磁阀有限责任公司 Recoil type electromagnetic valve and electro-hydraulic control system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08135839A (en) * 1994-11-10 1996-05-31 Konan Denki Kk Pilot type double acting solenoid valve
US20130248021A1 (en) * 2010-12-01 2013-09-26 Andreas Förster Actuator For An Adjustable Damper-Valve Device
CN205504140U (en) * 2016-03-28 2016-08-24 奉化市安利特机械有限公司 Pesticide is electromagnetism guide head for atomizer
CN106979371A (en) * 2017-04-14 2017-07-25 金华市德诺电器有限公司 A kind of magnetic valve
CN208651767U (en) * 2018-07-09 2019-03-26 宁波盛达阳光自动化科技有限公司 A kind of novel pneumatic solenoid valve
CN211875244U (en) * 2020-04-08 2020-11-06 鞍山电磁阀有限责任公司 Recoil type electromagnetic valve and electro-hydraulic control system

Also Published As

Publication number Publication date
CN111288205B (en) 2024-07-05

Similar Documents

Publication Publication Date Title
CN211875244U (en) Recoil type electromagnetic valve and electro-hydraulic control system
CN106641398B (en) Large-caliber pilot unloading type electromagnetic valve
CN108458151B (en) Self-sealing type double-redundancy two-position three-way electromagnetic valve
CN111442099A (en) Heavy-calibre guide's formula high pressure normally open solenoid valve
CN111288205A (en) Recoil type electromagnetic valve and electro-hydraulic control system
CN211574378U (en) Electromagnetic valve
CN218761119U (en) Buffer with sealing effect for roller cage shoe
CN113565970A (en) Electromagnetic valve
CN109578613B (en) PDS ball valve
CN218818391U (en) Large-flow safety valve
CN201269187Y (en) Pressure-regulating spilling system of plunger type high-pressure water pump
CN212657302U (en) Leaf spring check valve
CN218625438U (en) Solenoid valve and solenoid valve subassembly
CN101463811B (en) Pressure-regulating spilling system of plunger type high-pressure water pump
CN218376600U (en) Valve bridge and diesel engine with valve clearance compensation
CN219911994U (en) New energy automobile fills case
CN210623241U (en) Normally closed electromagnetic one-way valve special for hydraulic electric actuator
CN217783907U (en) Optimized pressure release valve stroke-increasing structure and oil cylinder using same
CN216278255U (en) Cylinder block flow distribution disc assembly, hydraulic power mechanism and engineering machinery
CN209876063U (en) High-precision gas safety valve
CN215928569U (en) Pilot-operated type electromagnetic valve
CN209743692U (en) Overflow valve
CN221195878U (en) Direct-drive damping control valve
CN113833879A (en) Leaf spring check valve
CN219827560U (en) Pneumatic damper

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant