CN214578002U - Plug-in two-way proportional speed regulating valve - Google Patents
Plug-in two-way proportional speed regulating valve Download PDFInfo
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- CN214578002U CN214578002U CN202120371778.9U CN202120371778U CN214578002U CN 214578002 U CN214578002 U CN 214578002U CN 202120371778 U CN202120371778 U CN 202120371778U CN 214578002 U CN214578002 U CN 214578002U
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Abstract
The utility model discloses a cartridge formula two-way proportional speed regulating valve, the disk seat passes through the swivel nut and can dismantle fixedly with solenoid valve body, the front end of disk seat establishes the valve barrel, be equipped with the compensation case in the valve barrel, the rear end portion of compensation case is provided with the compensation cavity, the valve barrel is provided with first pressure release hole, the compensation case is equipped with second pressure release hole, second pressure release hole is linked together with the compensation cavity, the disk seat rear end is equipped with the oil inlet, the case activity sets up in the disk seat, the front end of case is equipped with the pilot hole, be equipped with the case chamber that is linked together with the pilot hole in the case, the case is equipped with the first damping hole corresponding with the oil inlet, first damping hole is linked together with the case chamber, the front end of pilot valve case is equipped with the sealing, the pilot valve core sets up the second damping hole that is linked together with water conservancy diversion chamber, case chamber; the pressure relief valve has the advantages that the position maintaining function and the speed adjusting function are integrated on one valve, so that the pressure is maintained, and simultaneously, the current can be continuously changed, so that the size of an opening during pressure relief is controlled, and the continuous change of the speed is realized.
Description
Technical Field
The utility model particularly relates to a cartridge formula two-way proportional speed control valve.
Background
The electric control valves in the hydraulic system usually include an electromagnetic switch valve, an electromagnetic proportional valve and an electromagnetic servo valve. The electromagnetic proportional valve in turn typically comprises an electromagnetic proportional pressure valve, an electromagnetic proportional flow valve and an electromagnetic proportional directional valve. The electromagnetic proportional flow valve is further divided into a proportional throttle valve and a proportional speed regulating valve. The hydraulic valves of the types can realize remote and automatic control and realize the automation of a hydraulic system by additionally arranging an electromagnetic operation device.
In a hydraulic system, a hydraulic oil cylinder as an actuating element is relatively complex in use condition compared with other actuating elements. The most common working condition is to control the load to rise and keep the position unchanged and fall after the load is in place, and the whole movement process needs to keep the load to run stably and uniformly. The ascending working condition is usually realized by using a one-way valve or a one-way electromagnetic valve, the position is maintained by using a common pilot-controlled one-way valve or a one-way electromagnetic valve, the descending is realized by using a manual valve or a one-way electromagnetic valve or controlling the pilot-controlled one-way valve to be opened, a speed regulating valve or a one-way throttle valve is required to be additionally arranged at a constant speed, the 3 stages of the working conditions are realized in the prior art, the working conditions can be realized by matching 3 control valves, once the running speed is set, the change is required again, and the running speed cannot be continuously adjusted. The biggest problem of the existing regulating valve is that the starting and the ending of the operation cause larger hydraulic impact, which is reflected on the oil cylinder as the instability of the load and has the shaking phenomenon.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the plug-in type two-way proportional speed regulating valve has the advantages of simple structure, convenience in disassembly and assembly, small integrated volume and capability of realizing continuous regulation.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a plug-in type two-way proportional speed regulating valve comprises an electromagnetic valve body, a valve core, a valve seat, a threaded sleeve, a compensating valve core and a pilot valve core, wherein a flow guide cavity is formed in the pilot valve core, the valve seat is detachably fixed with the electromagnetic valve body through the threaded sleeve, a hollow valve sleeve is fixedly arranged at the front end of the valve seat, the compensating valve core is arranged in the valve sleeve, the front end part of the compensating valve core is sealed, a compensating cavity is formed in the rear end part of the compensating valve core, a compensating spring is arranged between the compensating valve core and the step hole, a first pressure relief hole is formed in the valve sleeve, a second pressure relief hole corresponding to the first pressure relief hole is formed in the compensating valve core, the second pressure relief hole is communicated with the compensating cavity, an oil inlet communicated with the interior is formed in the rear end of the valve seat, and the valve core is movably arranged in the valve seat and positioned behind the step hole, the front end of the valve core can be in sealing fit with the rear wall of the step hole, the front end of the valve core is provided with a pilot hole communicated with the step hole, a valve core cavity communicated with the pilot hole is formed inside the valve core, the valve core is provided with a first damping hole corresponding to the oil inlet, the first damping hole is communicated with the valve core cavity, the pilot valve core is movably arranged in the valve core cavity, the front end of the pilot valve core is provided with a sealing part used for sealing the pilot hole, the pilot valve core is provided with a second damping hole communicated with the flow guide cavity and the valve core cavity, and the moving iron of the electromagnetic valve body is connected with the pilot valve core and used for driving the pilot valve core.
Furthermore, the rear end part of the pilot valve core is integrally provided with a clamping ring protruding outwards, the moving iron is provided with a through hollow part, the front end of the hollow part is in a step shape, the front end of the moving iron is provided with a limiting ring matched with the clamping ring, the clamping ring is arranged at the front end of the hollow part, a buffer spring is arranged in the step-shaped hollow part, one end of the buffer spring is abutted against the moving iron, the other end of the buffer spring is abutted against the pilot valve core, and the hollow part is communicated with the flow guide cavity.
Furthermore, the solenoid valve body still include the flux sleeve, the flux sleeve in be provided with the installation cavity that runs through, the movable iron set up in the front end portion of installation cavity and with the sealed laminating of inner wall of flux sleeve, the installation cavity in be provided with adjusting bolt, adjusting bolt and the sealed cooperation of flux sleeve, adjusting bolt and movable iron between be provided with adjusting spring, adjusting spring's one end offset with adjusting bolt, adjusting spring's the other end compress tightly movable iron.
Furthermore, the sealing part is conical, and the tip of the conical sealing part can extend into the pilot hole to seal the pilot hole through the conical surface.
Furthermore, the front end of the valve core protrudes outwards to form a step shape, and the rear side surface of the hole wall of the stepped hole is provided with a sealing notch; the valve core has the advantages that secondary sealing between the valve core and the valve seat can be realized, and the sealing reliability is improved.
Furthermore, the screw sleeve, the valve seat and the valve sleeve are provided with sealing rings.
Furthermore, a plurality of second pressure relief holes are uniformly distributed on the compensating valve core along the radial direction of the compensating valve core; the advantage lies in the promptness that a plurality of second pressure release holes that set up can make pressure oil when the discharge, realizes the balance of case more easily, improves the reliability of two-way proportional governor valve.
Furthermore, the adjusting bolt is a hexagon bolt, and the head of the adjusting bolt is also provided with a hexagon socket; the two-way proportional speed regulating valve has the advantages that the pressure of the spring can be changed by receiving the test of controlling the regulating bolt, the adaptability of the two-way proportional speed regulating valve is improved, and the elastic fatigue caused by frequent use of the spring is made up.
Compared with the prior art, the utility model has the advantages that position holding function and speed regulation function integration can realize pressure holding on a valve, thereby opening size when also can the continuous change electric current control pressure release simultaneously, can be with the continuous change of controlled flow to realize the continuous change of speed. And the speed can be controlled not to change suddenly due to the change of the load size, and the smooth operation is realized. The continuous slow opening and closing can eliminate hydraulic impact and further eliminate the shaking phenomenon of the oil cylinder during operation. The utility model discloses an oil circuit is simple, and is integrated convenient, and solenoid valve body passes through the swivel nut and fixes the installation of being convenient for mutually with the disk seat and dismantle, saves the maintenance cost.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of a portion a in fig. 1 in a closed state according to the present invention;
fig. 3 is a schematic view of a state of a portion a in fig. 1 when the present invention is in an initial on state;
fig. 4 is a schematic diagram of the function symbol of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
A plug-in type two-way proportional speed regulating valve comprises an electromagnetic valve body 1, a valve core 4, a valve seat 3 with a step hole 6 arranged inside, a threaded sleeve 2, a compensation valve core 5 and a pilot valve core 7 with a flow guide cavity 7.1 arranged inside, wherein the valve seat 3 is detachably fixed with the electromagnetic valve body 1 through the threaded sleeve 2, a hollow valve sleeve is fixedly arranged at the front end of the valve seat 3, the compensation valve core 5 is arranged in the valve sleeve, the compensation valve core 5 is in sealing fit with the valve sleeve, the front end part of the compensation valve core 5 is sealed, the rear end part of the compensation valve core 5 is provided with a compensation cavity 5.1, a compensation spring 19 is arranged between the compensation valve core 5 and the step hole 6, a first pressure relief hole 11 is arranged on the side wall of the valve sleeve, a plurality of second pressure relief holes 12 are uniformly distributed and arranged along the radial direction of the compensation valve core 5, the second pressure relief holes 12 are communicated with the compensation cavity 5.1, an oil inlet 10 communicated with the inside is arranged at the rear end of the valve seat 3, the valve core 4 is movably arranged in the valve seat 3 and positioned behind the step hole 6, the front end of the valve core 4 can be matched with the rear wall of the stepped hole 6 in a sealing mode, the front end of the valve core is provided with a pilot hole 13 communicated with the stepped hole 6, a valve core cavity 4.1 communicated with the pilot hole 13 is formed in the valve core, the valve core 4 is provided with a first damping hole 14 corresponding to the oil inlet 10, the first damping hole 14 is communicated with the valve core cavity 4.1, the pilot valve core 7 is movably arranged in the valve core cavity 4.1, the front end of the pilot valve core 7 is provided with a sealing portion 7.2 used for sealing the pilot hole 13, and the pilot valve core 7 is provided with a second damping hole 15 communicated with the flow guide cavity 7.1 and the valve core cavity 4.1.
The electromagnetic valve body 1 further comprises a magnetic conductive sleeve 8 and a cylindrical electromagnetic coil 16, the electromagnetic coil 16 is sleeved on the outer side of the magnetic conductive sleeve 8, a through installation cavity 8.1 is formed in the magnetic conductive sleeve 8, the movable iron 9 is arranged at the front end portion of the installation cavity 8.1 and is in sealing fit with the inner wall of the magnetic conductive sleeve 8, an adjusting bolt 17 is arranged in the installation cavity 8.1, the adjusting bolt 17 is in sealing fit with the magnetic conductive sleeve 8, an adjusting spring 18 is arranged between the adjusting bolt 17 and the movable iron 9, one end of the adjusting spring 18 is abutted to the adjusting bolt 17, and the other end of the adjusting spring 18 compresses the movable iron 9. After the power is switched on, the electromagnetic coil 16 drives the moving iron 9 to move, so that the moving iron 9 drives the pilot valve core 7 to move.
The rear end part of the pilot valve core 7 is integrally provided with a clamping ring 20 protruding outwards, the moving iron 9 is provided with a through hollow part 9.1, the front end of the hollow part 9.1 is step-shaped, the front end of the moving iron 9 is provided with a limiting ring matched with the clamping ring 20, the clamping ring 20 is arranged at the front end of the hollow part 9.1, a buffer spring 21 is arranged in the step-shaped hollow part 9.1, one end of the buffer spring 21 is abutted against the moving iron 9, the other end of the buffer spring is abutted against the pilot valve core 7, and the hollow part 9.1 is communicated with the pilot chamber 7.1.
The sealing part 7.2 is of a conical shape, and the tip of the conical sealing part 7.2 can extend into the pilot hole 13 to seal the pilot hole 13 through the conical surface.
The front end of the valve core 4 protrudes outwards to form a step shape, and the rear side surface of the hole wall of the stepped hole 6 is provided with a sealing notch; when the valve core is in a sealing state, the front end of the valve core 4 is sealed with the edge of the sealing notch, and the stepped valve core part extends into the stepped hole 6, so that secondary sealing between the valve core and the side wall of the stepped hole 6 is realized, and the reliability of the valve core is improved.
The screw sleeve 2, the valve seat 3 and the valve sleeve are all provided with a sealing ring 22; the adjusting bolt 17 is a hexagon bolt, and the head of the adjusting bolt 17 is further provided with a hexagon socket, so that the adjusting bolt 17 can be adjusted conveniently.
The specific working principle is as follows: the functional symbol shows that the opening at the front end of the valve sleeve is communicated with the oil inlet 10, and the first pressure relief hole 11 is isolated from the oil inlet 10 and the opening end of the valve sleeve. When the valve core 4 is in a closed state, namely no current flows through the electromagnetic coil 16, the electromagnetic valve body 1 does not generate backward pulling force, and the valve core 4 is pressed on the side wall of the stepped hole 6 through the transmission of the moving iron 9 and the pilot valve core 7 under the action of the adjusting spring 18; meanwhile, the pilot valve core 7 is sealed with the pilot hole 13 under the action of the adjusting spring 18, so that the sealing of the valve core and the valve seat 3 is realized. After oil is fed, pressure oil enters the magnetic conduction sleeve 8 through the oil inlet 10, the first damping hole 14, the second damping hole 15, the flow guide cavity 7.1 and the hollow part 9.1 of the moving iron 9, and the pressure of the pressure oil acts in the valve core cavity 4.1, so that the conical surface at the front end of the valve core is tightly pressed on the valve seat 3. Meanwhile, the pressure oil acts on the front end face of the compensating valve core 5 through the opening end of the valve sleeve, so that the compensating spring 19 is compressed, the first pressure relief hole 11 and the second pressure relief hole 12 are staggered to open and close a channel, and the compensating spring 19 is stabbed to be in a maximum compression state.
When the electromagnet coil is electrified, electromagnetic force is generated and acts on the moving iron 9, the moving iron 9 is pulled to move leftwards, the pilot valve core 7 is pulled to move leftwards together, and at the moment, the conical surface at the front end of the pilot valve core 7 leaves the pilot hole 13. Since the diameter of the pilot bore 13 is larger than the diameter of the first damping orifice 14, once the pilot bore 13 is opened, the pressure in the pilot chamber 7.1 decreases and a pressure difference is created which acts on the outside of the front end of the spool, causing the spool to move to the left with the pilot spool 7, opening the stepped bore 6, and pressure oil enters the compensation cavity 5.1 through the stepped bore 6 and acts on the compensation spool 5. Under the additional action of the acting force of the compensating spring 19, the compensating valve core 5 moves rightwards, a passage between the first pressure relief hole 11 and the second pressure relief hole 12 is opened, and the pressure oil flows outwards from the oil inlet 10 through the stepped hole 6, the compensating cavity 5.1, the second pressure relief hole 12 and the first pressure relief hole 11 to be relieved.
During the leftward movement of the valve core, the flow area of the pilot hole 13 is reduced, and at this time, the pressure in the pilot chamber 7.1 rises until the pressure is close to the pressure in the stepped hole 6, i.e., pressure balance is achieved, and at this time, the valve core is in a fixed position under the action of hydraulic pressure.
Along with the increase of current, the electromagnetic force is gradually increased, the opening between the front end face of the valve core 4 and the stepped hole 6 is gradually increased, the flow of pressure oil entering the compensation cavity 5.1 is gradually increased, so that the pressure of the compensation cavity 5.1 and the pressure of the opening end of the valve sleeve are gradually close to each other and offset, the compensation valve core 5 gradually moves rightwards under the action of the compensation spring 19, the corresponding areas of the first pressure relief hole 11 and the second pressure relief hole 12 are gradually increased, and finally the flow from the oil inlet 10 to the first pressure relief hole 11 is increased along with the increase of current.
When the current in the coil is constant, namely the valve core is in a balance position, when the load of the oil inlet 10 is increased, namely the pressure is increased, the pressure at the opening at the front end of the valve sleeve is also increased, and the increased pressure oil enters the compensation cavity 5.1 through the stepped hole 6 and acts on the compensation valve core 5. Meanwhile, the pressure oil entering the compensation cavity 5.1 is slower than the change of the load, namely the change of the pressure oil at the opening at the front end of the valve sleeve, so that the pressure increased at the left end of the compensation valve core 5 is temporarily smaller than the pressure at the right end of the compensation valve core 5, the compensation valve core 5 can move leftwards immediately, the relative area between the first pressure relief hole 11 and the second pressure relief hole 12 is reduced, and the flow of the first pressure relief hole 11 is temporarily reduced. When the pressures at the left and right ends of the compensation valve core 5 are gradually equal, the compensation valve core 5 moves again under the action of the force of the compensation spring 19, the relative area between the first pressure relief hole 11 and the second pressure relief hole 12 is changed, and the pressure difference at the two sides of the compensation valve core 5 is kept basically unchanged.
The above-described embodiments are only preferred embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which are within the scope of the present invention.
Claims (8)
1. A plug-in type two-way proportional speed regulating valve comprises an electromagnetic valve body, a valve core and a valve seat, wherein a step hole is formed in the valve seat, the plug-in type two-way proportional speed regulating valve is characterized by further comprising a threaded sleeve, a compensating valve core and a pilot valve core, a flow guide cavity is formed in the pilot valve core, the valve seat is detachably fixed with the electromagnetic valve body through the threaded sleeve, a hollow valve sleeve is fixedly arranged at the front end of the valve seat, the compensating valve core is arranged in the valve sleeve, the front end portion of the compensating valve core is sealed, a compensating cavity is formed in the rear end portion of the compensating valve core, a compensating spring is arranged between the compensating valve core and the step hole, a first pressure relief hole is formed in the valve sleeve, a second pressure relief hole corresponding to the first pressure relief hole is formed in the compensating valve core, the second pressure relief hole is communicated with the compensating cavity, an oil inlet communicated with the rear end of the valve seat is formed in the valve seat, and the valve core is movably arranged in the rear portion of the step hole, the front end of the valve core can be in sealing fit with the rear wall of the step hole, the front end of the valve core is provided with a pilot hole communicated with the step hole, a valve core cavity communicated with the pilot hole is formed inside the valve core, the valve core is provided with a first damping hole corresponding to the oil inlet, the first damping hole is communicated with the valve core cavity, the pilot valve core is movably arranged in the valve core cavity, the front end of the pilot valve core is provided with a sealing part used for sealing the pilot hole, the pilot valve core is provided with a second damping hole communicated with the flow guide cavity and the valve core cavity, and the moving iron of the electromagnetic valve body is connected with the pilot valve core and used for driving the pilot valve core.
2. A plug-in two-way proportional speed regulating valve according to claim 1, wherein a snap ring protruding outward is integrally disposed at the rear end of the pilot valve core, the movable iron is provided with a through hollow portion, the front end of the hollow portion is stepped, a limit ring matched with the snap ring is disposed at the front end of the movable iron, a buffer spring is disposed in the stepped hollow portion, one end of the buffer spring abuts against the movable iron, the other end of the buffer spring abuts against the pilot valve core, and the hollow portion is communicated with the flow guide cavity.
3. The plug-in type two-way proportional speed regulating valve according to claim 2, wherein the electromagnetic valve body further comprises a magnetic conductive sleeve, a through installation cavity is arranged in the magnetic conductive sleeve, the movable iron is arranged at the front end of the installation cavity and is in sealing fit with the inner wall of the magnetic conductive sleeve, an adjusting bolt is arranged in the installation cavity, the adjusting bolt is in sealing fit with the magnetic conductive sleeve, an adjusting spring is arranged between the adjusting bolt and the movable iron, one end of the adjusting spring abuts against the adjusting bolt, and the other end of the adjusting spring presses the movable iron.
4. The cartridge type two-way proportional speed regulating valve according to claim 1, wherein the sealing portion is tapered, and a tip of the tapered sealing portion is capable of extending into the pilot hole to seal the pilot hole by the tapered surface.
5. The proportional speed regulating valve of claim 1, wherein the front end of the valve core protrudes outward to form a step shape, and the rear side of the hole wall of the stepped hole is provided with a sealing notch.
6. The proportional speed regulating valve of claim 1, wherein the threaded sleeve, the valve seat and the valve sleeve are provided with sealing rings.
7. The cartridge type two-way proportional speed regulating valve according to claim 1, wherein the compensator spool is provided with a plurality of second relief holes arranged in a radially uniform manner.
8. The plug-in type two-way proportional speed regulating valve according to claim 3, wherein the adjusting bolt is a hexagon bolt, and a hexagon socket is further arranged at the head of the adjusting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120371778.9U CN214578002U (en) | 2021-02-08 | 2021-02-08 | Plug-in two-way proportional speed regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120371778.9U CN214578002U (en) | 2021-02-08 | 2021-02-08 | Plug-in two-way proportional speed regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214578002U true CN214578002U (en) | 2021-11-02 |
Family
ID=78350965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120371778.9U Expired - Fee Related CN214578002U (en) | 2021-02-08 | 2021-02-08 | Plug-in two-way proportional speed regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214578002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906399A (en) * | 2023-07-17 | 2023-10-20 | 杭州励贝电液科技有限公司 | Hydraulic proportional speed regulating valve |
-
2021
- 2021-02-08 CN CN202120371778.9U patent/CN214578002U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906399A (en) * | 2023-07-17 | 2023-10-20 | 杭州励贝电液科技有限公司 | Hydraulic proportional speed regulating valve |
| CN116906399B (en) * | 2023-07-17 | 2024-04-19 | 杭州励贝电液科技有限公司 | Hydraulic proportional speed regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211102 |