CN207393611U - A kind of high frequency sound twin-stage proportional direction valve - Google Patents
A kind of high frequency sound twin-stage proportional direction valve Download PDFInfo
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- CN207393611U CN207393611U CN201721269942.5U CN201721269942U CN207393611U CN 207393611 U CN207393611 U CN 207393611U CN 201721269942 U CN201721269942 U CN 201721269942U CN 207393611 U CN207393611 U CN 207393611U
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Abstract
The utility model discloses a kind of high frequency sound twin-stage proportional direction valve, including：Pilot valve, the pilot valve include guide valve blocks, and guide's valve pocket is equipped in the guide valve blocks, are equipped with pilot valve in guide's valve pocket, and the pilot valve can formerly horizontal slip in guide valve bushing；Drive system, the drive system are connected with pilot valve, can drive in the first guide valve bushing of pilot valve and slide；Main valve, the main valve are connected with pilot valve, and the fluid in pilot valve can be fed directly in main valve, and main valve body is equipped in the main valve, main valve plug is equipped in the main valve body；Position sensing mechanism, the position sensing mechanism are connected respectively with main valve plug and drive system.The utility model can realize quick proportion directional control, its fast response time compared with common proportional reversing valve, control accuracy is high, available in high frequency sound, high-precision control system.
Description
Technical field
The utility model is related to a kind of proportional servo valves, and in particular to a kind of high frequency sound twin-stage proportional direction valve.
Background technology
In many high-precision hydraulic control occasions, it is often necessary to use proportional servo valve.Proportional servo valve herein often fills
As the role of core component, the performance of equipment and the quality of the product of production are directly affected.
Existing proportional servo valve generally uses double-spring structure, and double-spring structure symmetry requirement is high, and precompressed
Contracting is big.
In addition, the integrated form amplifier and proportion electro-magnet in existing proportional servo valve are provided separately, it is necessary to which intermediate turn
It connects, it is complicated, and seal and control and is bad with effectiveness.
Furthermore existing proportional servo valve is not provided with pressure reducing valve between pilot valve and main valve, and the fluctuation of pressure can be direct
It is transmitted to inside closed signal and goes, add control difficulty, system pressure caused by especially pulsing and loading fluctuates big field
It closes particularly evident.
Utility model content
The utility model to solve the above-mentioned problems, so as to provide a kind of high frequency sound twin-stage proportional direction valve.
In order to achieve the above objectives, the technical solution of the utility model is as follows：
A kind of high frequency sound twin-stage proportional direction valve, the high frequency sound twin-stage proportional direction valve include：
Pilot valve, the pilot valve include guide valve blocks, guide's valve pocket, guide's valve pocket are equipped in the guide valve blocks
Interior to be equipped with pilot valve, the pilot valve can formerly horizontal slip in guide valve bushing；
Drive system, the drive system are connected with pilot valve, can drive sliding in the first guide valve bushing of pilot valve
It is dynamic；
Main valve, the main valve are connected with pilot valve, and the fluid in pilot valve can be fed directly in main valve, the master
Main valve body is equipped in valve, main valve plug is equipped in the main valve body；
Position sensing mechanism, the position sensing mechanism are connected respectively with main valve plug and drive system.
In a preferred embodiment of the utility model, the pilot valve is three-position four-way valve.
In a preferred embodiment of the utility model, the pilot valve further includes end cap, the first spring base and first
Spring, the end cap are arranged on guide valve blocks one side, and the first spring cavity is formed between guide valve blocks, and first spring is set
It puts in the first spring cavity, first spring one end is fixedly connected with end cap, and first spring base is arranged on the first spring
Intracavitary, and be fixedly connected with the first spring other end, first spring base is connected with guide's valve pocket, described pilot valve one end
It may pass through spring base and the first spring be connected.
In a preferred embodiment of the utility model, the drive system includes proportion electro-magnet and integrated form amplifies
Device, the other end of electromagnet push-rod and pilot valve on the proportion electro-magnet connect, and pilot valve passes through proportion electro-magnet
Promotion and the first spring form dynamic balance.
In a preferred embodiment of the utility model, the guide valve blocks bottom is equipped with the first oil duct and the second oil
Road, first oil duct and the second oil duct connect respectively with the hydraulic fluid port on guide valve blocks.
In a preferred embodiment of the utility model, the main valve is Single spring structure, and the main valve further includes a left side
End cap, right end cap, second spring and second spring seat, the left end cap and right end cap are separately positioned on main valve body both ends, described
Second spring chamber is equipped between left end cap and main valve body, the second spring seat is arranged on second spring intracavitary, second bullet
Spring is arranged on second spring seat, and described main valve plug one end is directly connected with second spring seat, the main valve plug and left end cap it
Between be equipped with positioning screw, the right end cap be equipped with connecting hole.
In a preferred embodiment of the utility model, the main valve body top is equipped with the 3rd oil duct and the 4th oil duct,
Described 3rd oil duct one end is connected with the first oil duct, and the other end inside main valve body with connecting, described 4th oil duct one end and second
Oil duct connects, and the other end inside main valve body with connecting.
In a preferred embodiment of the utility model, the position sensing mechanism includes position sensor and sensor
Demodulator is interference fitted between the pressure pipe and right end cap of the position sensor by being press-fitted, and the measuring staff in pressure pipe passes through
Connecting hole on right end cap is injected in main valve plug, and described sensor demodulator one end is connected with position sensor, and the other end passes through
Electrical cable is connected with integrated form amplifier.
In a preferred embodiment of the utility model, fixed pressure reducing valve, institute are equipped between the pilot valve and main valve
Pressure reducing valve is stated to connect with the first oil duct, the second oil duct, the 3rd oil duct and the 4th oil duct respectively,
Between the pilot valve and main valve be equipped with fixed pressure reducing valve, the fixed pressure reducing valve respectively with the first oil duct, second
Oil duct, the 3rd oil duct and the connection of the 4th oil duct, the fixed pressure reducing valve are sliding valve structure, and the fixed pressure reducing valve will be by that will depressurize
The pressure of mouth is introduced into relief pressure valve cartridge one end inside fixed pressure reducing valve, makes this pressure that relief pressure valve cartridge be promoted to remove control relief pressure valve cartridge
Opening increase and decrease pressure simultaneously reach balance with the relief spring inside fixed pressure reducing valve, then decompressed pressure enter again pilot valve into
Hydraulic fluid port.
The beneficial effects of the utility model are：
The utility model can realize that quick proportion directional controls, its fast response time compared with common proportional reversing valve,
Control accuracy is high, available in high frequency sound, high-precision control system, compared with traditional double-spring structure, Single spring structure
Uniformity of the proportional direction valve on two outbound courses is enhanced, reduces precommpression.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the structure diagram of guide's valve pocket；
Fig. 3 is the sectional view in the A-A directions of Fig. 2；
Structure diagram when Fig. 4 being guide's valve pocket and pilot valve cooperation in security bit；
Structure diagram when Fig. 5 being guide's valve pocket and pilot valve cooperation in energization middle position；
Fig. 6 is the structure diagram of proportion electro-magnet.
Specific embodiment
In order to which the technical means, creative features, achievable purpose and effectiveness for realizing the utility model are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Referring to Fig. 1 to Fig. 6, high frequency sound twin-stage proportional direction valve provided by the utility model, including pilot valve 100, master
Valve 200, drive system and position sensing mechanism, pilot valve 100 are connected with main valve 200, and pilot valve 100 can be by fluid stream
Enter into main valve 200.
Pilot valve 100, including guide valve blocks 110, guide's valve pocket 120, pilot valve 130, end cap 140, the first spring
150 and first spring 160 of seat.
Guide's valve pocket 120 is arranged in guide valve blocks 110, and pilot valve 130 is arranged in guide's valve pocket 120, and can
Horizontal slip is carried out in first guide valve bushing 120, guide's valve pocket 120 and pilot valve can be changed by the slip of pilot valve 130
The size of hydraulic fluid port opening between 130.
100 specific valve of pilot valve is three-position four-way valve, and tool is there are one safeguard protection position, by using pilot valve 130
With the fit structure of guide's valve pocket 120, different safe median functions can be realized, and can realize different covering situations so as to have
There is different control characteristics, to meet different operating modes, herein using the safe function of Y types, other functions can control main valve 200
Power off initial hydraulic position.
Guide's valve pocket 120 reaches different by going out rectangle or window as needed with wire cutting and electrical discharge machining
Output characteristics.
Pilot valve 130 and guide's valve pocket 120 are processed for match grinding, its covering situation of strict guarantee and gap.
End cap 140 is arranged on 110 one side of guide valve blocks, and the first spring cavity is formed between guide valve blocks 110, the first bullet
Spring 160 is arranged in the first spring cavity, and 160 one end of the first spring is connected with end cap 140, and the first spring base 150 is arranged on first
It in spring cavity, and is connected with 160 other end of the first spring, the first spring base 150 is connected with guide's valve pocket 120, pilot valve 130
The extended guide's valve pocket 120 in one end is connected with the first spring base 150, and such first spring 160 can be that pilot valve 130 carries
For an elastic force, and with drive system give pilot valve 130 thrust formed dynamic balance, so as to reach control guide valve blocks
110 inner fluids flow to the hydraulic fluid port A of guide valve blocks 110 and the pressure of hydraulic fluid port B and the size of flow.
Drive system is connected with pilot valve 130, can drive interior gram of 130 first guide valve bushing 120 of pilot valve
The elastic force for taking the first spring 160 is moved, including proportion electro-magnet 310 and integrated form amplifier 320.
Electromagnet push-rod on proportion electro-magnet 310 is connected with the end of pilot valve 130, and proportion electro-magnet 310 controls
Electromagnet push-rod promotes pilot valve 130 to carry out displacement.
Integrated form amplifier 320 is connected with proportion electro-magnet 310, and controllable proportion electro-magnet 310 works.
For the ease of installation, screw hole 311 is equipped at 310 top of proportion electro-magnet, and integrated form amplifier 320 passes through spiral shell
Nail is directly installed on the top of proportion electro-magnet 310 with the cooperation of screw hole 311, so reduces intermediate transit, tailored appearance,
Sealing and control effect are more preferably.
In addition, being equipped with sensor in proportion electro-magnet 310, sensor is connected with integrated form amplifier 320, and electromagnet passes
Electromagnet push-rod position signal can be transmitted directly to integrated form amplifier 320 by sensor, and integrated form amplifier 320 is again by position
Signal is compared, and difference is converted into 310 identifiable driving value of proportion electro-magnet is sent to proportion electro-magnet 310, high-precision
Degree control electromagnet push-rod position.
Main valve 200 is Single spring structure, is connected with pilot valve 100, including main valve body 210, main valve plug 220, a left side
End cap 230, right end cap 240, second spring 250 and second spring seat 260.
Main valve plug 220 is arranged in main valve body 210, and left end cap 230 and right end cap 240 are sealingly disposed in main valve body respectively
210 both ends, are equipped with second spring chamber between left end cap 230 and main valve body 210, second spring seat 260 is arranged on second spring
Intracavitary, second spring 250 are arranged on second spring seat 260, and 220 one end of main valve plug is directly connected with second spring seat 260, main
Positioning screw 270 is equipped between spool 220 and left end cap 230, being equipped on right end cap 240 prevents the anti-of the rotation of main valve plug 220
Turn screw 241.
Compared with traditional double-spring structure, the main valve 200 in the application uses Single spring structure, so enhances ratio
Uniformity of the direction valve on two outbound courses, reduces spring pre compressed magnitude.
In this way, when fluid is flowed into main valve body 210 by pilot valve 100, fluid can promote main valve plug 220 to overcome second
The elastic force of spring 250 is moved, so as to change the openings of sizes of 210 upper hydraulic fluid port of main valve body.
Specifically the first oil duct 171 and the second oil duct 172 can be equipped in the bottom of pilot valve 100, be equipped at 200 top of main valve
3rd oil duct 201 and the 4th oil duct 202,201 one end of the 3rd oil duct are connected with the first oil duct 171, in the other end and main valve body 210
Portion connects, and 202 one end of the 4th oil duct is connected with the second oil duct 172, and the other end is connected with 210 inside of main valve body, such pilot valve
100 can be delivered directly to fluid in main valve body 210.
In addition, the fixed pressure reducing valve 500 of superposing type, fixed pressure reducing valve 500 are equipped between pilot valve 100 and main valve 200
It is connected respectively with the first oil duct 171, the second oil duct 172, the 3rd oil duct 201 and the 4th oil duct 202.
Fixed pressure reducing valve is sliding valve structure, passes through the pressure reducing valve introducing the pressure of pressure-reduction outlet inside fixed pressure reducing valve
Core one end, make this pressure promote relief pressure valve cartridge go control relief pressure valve cartridge opening increase and decrease pressure and with the decompression inside fixed pressure reducing valve
Spring reaches balance, and then decompressed pressure enters the oil inlet of pilot valve again, can be finally that main valve 200 provides more stable elder generation
Control pressure is led, the application is allow to use wider operating mode.
Position sensing mechanism is connected with main valve plug 220 and drive system, is for sensing main valve plug respectively
220 displacement, and the shift value sensed is sent to drive system.
Position sensing mechanism specifically includes position sensor 410 and sensor demodulator 420, position sensor 410 it is resistance to
Measuring staff in pressure pipe is injected through the connecting hole on right end cap 240 in main valve plug 220, and is connected, and thus position sensor 410 can
Sense the displacement of main valve plug 220, and pass through sensor demodulator 420 and shift value is sent to integrated form amplifier 320.
Between pressure pipe and right end cap 240 flange end face seal, sensor are interference fitted or are threadedly coupled by being press-fitted
420 one end of demodulator is connected with position sensor 410, and the other end is connected by electrical cable with integrated form amplifier 320.
In addition the connection of the measuring staff in main valve plug 220 and pressure pipe is using press-fit, by by measuring staff connecting portion pressure
It is flat, it is firmly locked in the induction precision that position sensor 410 can be so improved in the measuring staff mounting hole on main valve plug 220.
Contrast module is equipped in integrated form amplifier 320, shift value is sent to integrated form amplifier by position sensor 410
After 320, contrast module the shift value of receiving and integrated form amplifier 320 can be inputed to proportion electro-magnet 310 driving be worth into
Row comparison, and the result after comparison is sent to integrated form amplifier 320, and integrated form amplifier 320 is according to comparing result control
Proportion electro-magnet 310 processed works, and is controlled so as to fulfill quick proportion directional, it is responded compared with common proportional reversing valve
Speed is fast, and control accuracy is high, available in high frequency sound, high-precision control system.
Here is the specific work process of the application：
(1) driving value, 310 basis of proportion electro-magnet are inputted to proportion electro-magnet 310 by integrated form amplifier 320 first
Pilot valve 130 is pushed to corresponding position by driving value, can be formed between pilot valve 130 and guide's valve pocket 120 and held accordingly
Mouthful, at this moment the fluid of relevant pressure can be flowed into main valve body 210 by pilot valve 100；
(2) main valve plug 220 in main valve body 210 can carry out the displacement of corresponding position according to the fluid of inflow, and position passes
Sensor 410 can sense the displacement of main valve plug 220, and shift value is sent to integrated form by sensor demodulator 420 and is amplified
Device 320；
(3) position signal that sensor demodulator 420 is sent and its are inputed to ratio electromagnetism by integrated form amplifier 320
The driving value of iron 310 is compared, if there is deviation, will control proportion electro-magnet 310 drive proportion electro-magnet push rod to
It is preceding or backward, and one end due to pilot valve 130 and the push rod of proportion electro-magnet 310 link, the other end of pilot valve 130
First spring 160 is connected by the first spring base 150, integrated form amplifier 320 drives proportion electro-magnet push rod to front or rear, elder generation
Opening between guide valve core 130 and guide's valve pocket 120 can become larger and become smaller, and can also change direction, thus can cause pilot valve 100
Hydraulic fluid port pressure variation, and pilot valve 100 is connected with the both ends in main valve body 210, and main valve plug 220 can allow in displacement again
Spring force balances again with hydraulic coupling, and position sensor 410 can sense the displacement of main valve plug 220 again, and by shift value
Integrated form amplifier 320 is sent to by sensor demodulator 420；
(4) position signal that sensor demodulator 420 is sent and its are inputed to ratio electromagnetism by integrated form amplifier 320
Driving value after iron 310 is corrected is compared again, if there is deviation, continues to repeat the operation of step (3)；
(5) by being repeated in step (4), until the position that integrated form amplifier 320 sends sensor demodulator 420
It is zero to put signal value and input to the difference of the driving value of proportion electro-magnet 310 with it.
The basic principle of the utility model and main feature and the advantages of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Simply illustrate the principle of the utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed scope is defined by the appending claims and its equivalent thereof.
Claims (9)
1. a kind of high frequency sound twin-stage proportional direction valve, which is characterized in that the high frequency sound twin-stage proportional direction valve includes：
Pilot valve, the pilot valve include guide valve blocks, guide's valve pocket are equipped in the guide valve blocks, is set in guide's valve pocket
There is a pilot valve, the pilot valve formerly horizontal in guide valve bushing can be slided；
Drive system, the drive system are connected with pilot valve, can drive in the first guide valve bushing of pilot valve and slide；
Main valve, the main valve are connected with pilot valve, and the fluid in pilot valve can be fed directly in main valve, in the main valve
Equipped with main valve body, main valve plug is equipped in the main valve body；
Position sensing mechanism, the position sensing mechanism are connected respectively with main valve plug and drive system.
2. a kind of high frequency sound twin-stage proportional direction valve according to claim 1, which is characterized in that the pilot valve is three
Four-way valve.
3. a kind of high frequency sound twin-stage proportional direction valve according to claim 2, which is characterized in that the pilot valve further includes
End cap, the first spring base and the first spring, the end cap is arranged on guide valve blocks one side, and first is formed between guide valve blocks
Spring cavity, first spring are arranged in the first spring cavity, and first spring one end is fixedly connected with end cap, and described first
Spring base is arranged in the first spring cavity, and is fixedly connected with the first spring other end, first spring base and guide's valve pocket
Connection, described pilot valve one end may pass through the first spring base and the first spring is connected.
4. a kind of high frequency sound twin-stage proportional direction valve according to claim 3, which is characterized in that the drive system includes
Proportion electro-magnet and integrated form amplifier, the other end of electromagnet push-rod and pilot valve on the proportion electro-magnet connect,
Pilot valve forms dynamic balance by the promotion of proportion electro-magnet with the first spring.
A kind of 5. high frequency sound twin-stage proportional direction valve according to claim 4, which is characterized in that the guide valve blocks bottom
Equipped with the first oil duct and the second oil duct, first oil duct and the second oil duct connect respectively with the hydraulic fluid port on guide valve blocks.
6. a kind of high frequency sound twin-stage proportional direction valve according to claim 5, which is characterized in that the main valve is Single spring
Structure, the main valve further include left end cap, right end cap, second spring and second spring seat, the left end cap and right end cap difference
Main valve body both ends are arranged on, second spring chamber is equipped between the left end cap and main valve body, the second spring seat is arranged on the
In two spring cavitys, the second spring is arranged on second spring seat, and described main valve plug one end is directly connected with second spring seat,
Positioning screw is equipped between the main valve plug and left end cap, the right end cap is equipped with connecting hole.
7. a kind of high frequency sound twin-stage proportional direction valve according to claim 5, which is characterized in that the main valve body top is set
There are the 3rd oil duct and the 4th oil duct, described 3rd oil duct one end is connected with the first oil duct, and the other end inside main valve body with connecting, institute
It states the 4th oil duct one end to connect with the second oil duct, the other end inside main valve body with connecting.
A kind of 8. high frequency sound twin-stage proportional direction valve according to claim 6, which is characterized in that the position sensing mechanism
Including position sensor and sensor demodulator, matched somebody with somebody between the pressure pipe and right end cap of the position sensor by being press-fitted interference
It closes, the measuring staff in pressure pipe is injected through the connecting hole on right end cap in main valve plug, described sensor demodulator one end and position
Sensor connects, and the other end is connected by electrical cable with integrated form amplifier.
9. a kind of high frequency sound twin-stage proportional direction valve according to claim 5, which is characterized in that the pilot valve and main valve
Between be equipped with fixed pressure reducing valve, the fixed pressure reducing valve respectively with the first oil duct, the second oil duct, the 3rd oil duct and the 4th oil duct connect
Logical, the fixed pressure reducing valve is sliding valve structure, and the fixed pressure reducing valve by the pressure of pressure-reduction outlet by being introduced into fixed pressure reducing valve
Internal relief pressure valve cartridge one end makes this pressure that relief pressure valve cartridge be promoted to go control relief pressure valve cartridge opening increase and decrease pressure and depressurized with definite value
Relief spring inside valve reaches balance, and then decompressed pressure enters the oil inlet of pilot valve again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721269942.5U CN207393611U (en) | 2017-09-29 | 2017-09-29 | A kind of high frequency sound twin-stage proportional direction valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721269942.5U CN207393611U (en) | 2017-09-29 | 2017-09-29 | A kind of high frequency sound twin-stage proportional direction valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207393611U true CN207393611U (en) | 2018-05-22 |
Family
ID=62330848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721269942.5U Active CN207393611U (en) | 2017-09-29 | 2017-09-29 | A kind of high frequency sound twin-stage proportional direction valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207393611U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654430A (en) * | 2017-09-29 | 2018-02-02 | 上海立新液压有限公司 | A kind of high frequency sound twin-stage proportional direction valve and its proportion directional control method |
| CN112112850A (en) * | 2020-09-14 | 2020-12-22 | 宁波华液机器制造有限公司 | Automatic pilot valve structure and pilot-operated relief pressure valve placed in middle |
-
2017
- 2017-09-29 CN CN201721269942.5U patent/CN207393611U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107654430A (en) * | 2017-09-29 | 2018-02-02 | 上海立新液压有限公司 | A kind of high frequency sound twin-stage proportional direction valve and its proportion directional control method |
| CN112112850A (en) * | 2020-09-14 | 2020-12-22 | 宁波华液机器制造有限公司 | Automatic pilot valve structure and pilot-operated relief pressure valve placed in middle |
| CN112112850B (en) * | 2020-09-14 | 2022-08-12 | 宁波华液机器制造有限公司 | Automatic pilot valve structure and pilot-operated relief pressure valve placed in middle |
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