CN210164708U - High-flow high-speed switch valve - Google Patents
High-flow high-speed switch valve Download PDFInfo
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- CN210164708U CN210164708U CN201921177231.4U CN201921177231U CN210164708U CN 210164708 U CN210164708 U CN 210164708U CN 201921177231 U CN201921177231 U CN 201921177231U CN 210164708 U CN210164708 U CN 210164708U
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Abstract
The utility model discloses a high-flow high-speed switch valve, which comprises a pilot valve, wherein the pilot valve is provided with a pilot valve core, the pilot valve is sequentially divided into a servo spiral groove, a first pilot valve oil cavity, a second pilot valve oil cavity, a third pilot valve oil cavity and a fourth pilot valve oil cavity from left to right through the pilot valve core, the right extending end of the pilot valve core is connected with a shifting rod, and a rotary electromagnet is arranged above the shifting rod; the first pilot valve oil cavity is connected with a first oil return port, the second pilot valve oil cavity is connected with an oil inlet, and the third pilot valve oil cavity is connected with a second oil return port; the utility model improves the structure and the oil circuit of the cone valve, improves the stability of operation, the through-flow capacity and the speed of reaction, and improves the quality of products; secondly the utility model discloses still can reduce the striking between cone valve case and the disk seat, reduce the noise, prolong the life of cone valve.
Description
Technical Field
The utility model relates to a liquid flow control valve among hydraulic control system, concretely relates to large-traffic high-speed ooff valve.
Background
At present, China is in an industrial process, the manufacturing industry is an important support and foundation of national economy, various high-performance hydraulic parts are listed into key mechanical foundation part types, so that the research and development strength of the high-end hydraulic parts is increased, the requirements of national and local economic development are completely met, and in a hydraulic control system, a high-speed switch valve plays an important role, and the performance of the high-speed switch valve directly influences the performance of the whole hydraulic control system. At present, a plurality of colleges and research institutions at home and abroad deeply research high-speed switch valves and obtain certain results. However, the hydraulic high-speed switch valve generally has the contradiction between large flow and high frequency response, so that the requirements of a high-power and high-precision hydraulic system cannot be met; moreover, the cone valve is one of important elements in a hydraulic system, and has the characteristics of good sealing performance, strong through-flow capacity, high response speed, strong pollution resistance and the like, but in the dynamic closing process of the cone valve in operation, the valve core is easy to repeatedly impact with the valve seat, the contact stress is always periodic, fatigue damage, pitting corrosion or surface shedding can be caused, and further the structural sealing of the cone valve is unreliable or even the sealing completely fails.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a large-traffic high-speed ooff valve. The utility model improves the structure and the oil circuit of the cone valve, improves the stability, the through-flow capacity and the response speed of the operation, and improves the quality of the product; secondly the utility model discloses still can reduce the striking between cone valve case and the disk seat, reduce the noise, prolong the life of cone valve.
The technical scheme of the utility model: the high-flow high-speed switch valve comprises a pilot valve, wherein the pilot valve is provided with a pilot valve core, the pilot valve is sequentially divided into a servo spiral groove, a first pilot valve oil cavity, a second pilot valve oil cavity, a third pilot valve oil cavity and a fourth pilot valve oil cavity from left to right through the pilot valve core, the right extending end of the pilot valve core is connected with a pulling rod, and a rotary electromagnet is arranged above the pulling rod; the first pilot valve oil cavity is connected with a first oil return port, the second pilot valve oil cavity is connected with an oil inlet, the third pilot valve oil cavity is connected with a second oil return port and comprises a cone valve, the cone valve comprises a valve body, a pilot oil port A and a pilot oil port B are arranged above the valve body, the pilot oil port A is connected with the second pilot valve oil cavity, the pilot oil port B is connected with the third pilot valve oil cavity, and the valve body is sequentially provided with a spring sleeve, a left end cover, a valve seat and a right end cover from left to right; a cone valve core is arranged in the valve body, and a spring seat, a valve sleeve, a cone table and an oil film damper are sequentially arranged on the cone valve core from left to right; a spring cavity is formed between the spring sleeve and the spring seat, a first oil inlet cavity is formed between the left end cover and the valve sleeve, a first cone valve oil cavity is formed between the valve sleeve and the valve seat, a second cone valve oil cavity is formed between the valve seat and the oil film damper, and a second oil inlet cavity is formed between the oil film damper and the right end cover; the upper part of the first oil inlet cavity is connected with a guide oil port A, and the upper part of the second oil inlet cavity is connected with a guide oil port B; an oil inlet is arranged below the first cone valve oil cavity, and an oil outlet is arranged below the second cone valve oil cavity; the valve sleeve is fixed on the cone valve core, a spring fixed with the spring seat is arranged in the spring cavity, and the valve sleeve is matched with the cone valve core.
In the high-flow high-speed switch valve, the right end of the right end cover is symmetrically provided with adjusting screws.
In the high-flow high-speed switch valve, the right piston is embedded in the right end cover, the left piston is embedded in the left end cover, and the right piston and the left piston are respectively fixed with the right end and the left end of the cone valve core.
In the large-flow high-speed switch valve, the oil film damper sequentially comprises a first oil film plate, a second oil film plate and a third oil film plate from left to right, the first oil film plate and the second oil film plate are arranged on the cone valve core, and the third oil film plate is fixed with the valve body.
In the high-flow high-speed switch valve, oil films are arranged among the first oil film plate, the second oil film plate and the third oil film plate.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses be provided with above the cone valve body and lead accuse hydraulic fluid port A and lead accuse hydraulic fluid port B, lead accuse hydraulic fluid port A and be connected with the second pilot valve oil pocket of pilot valve, lead accuse hydraulic fluid port B and be connected with the third pilot valve oil pocket of pilot valve, be equipped with servo spiral groove, first pilot valve oil pocket, second pilot valve oil pocket, third pilot valve oil pocket and fourth pilot valve oil pocket from a left side to the right side in proper order through the pilot valve case in the pilot valve body, and the right stretching end of pilot valve case is connected with the dead man, be equipped with rotatory electro-magnet above the dead; when the rotary electromagnet rotates, the shifting rod drives the pilot valve core to generate rotary motion, and meanwhile, the servo spiral mechanism converts the rotary motion of the pilot valve core into axial motion of the pilot valve core in proportion and controls the pilot valve core to move left and right; when the pilot valve spool moves leftwards, an oil inlet of the pilot valve is communicated with a pilot oil port A through a second pilot oil cavity, pressure oil enters a first cone valve oil cavity of the cone valve from the second pilot oil cavity, meanwhile, a second cone valve oil cavity of the cone valve is communicated with a third pilot oil cavity of the pilot valve, oil is returned through a second oil return port, under the action of the pressure oil and a spring force, the cone valve spool moves rightwards rapidly until a cone table passes through a first oil inlet cavity, reaches the rightmost end of the first oil inlet cavity and is matched with a valve seat, at the moment, oil inlets and oil outlets of the first oil inlet cavity and the second oil inlet cavity are disconnected by the cone valve spool, and the cone valve achieves a locking function; on the contrary, when the pilot valve core moves rightwards, the oil inlet of the pilot valve is communicated with the pilot oil port B through the second pilot oil chamber, pressure oil enters the second pilot oil chamber of the cone valve from the second pilot oil chamber, meanwhile, the first cone valve oil chamber of the cone valve is communicated with the first pilot oil chamber of the pilot valve, the cone valve core moves leftwards under the action of the pressure oil and the spring force, the cone table leaves the valve seat leftwards and moves to the leftmost end of the first oil inlet chamber, and the oil inlets and the oil outlets of the first oil inlet chamber and the second oil inlet chamber are communicated, so that the opening and the closing of the valve are realized. Therefore, the utility model discloses an improve on the structure of awl valve and the oil circuit, improved stability, the through-flow capacity and the response speed of operation, improved the quality of product.
Furthermore, the cone valve comprises a valve body, the valve body is sequentially provided with a spring sleeve, a left end cover, a valve seat and a right end cover from left to right, a cone valve spool is arranged inside the valve body, the cone valve spool is sequentially provided with a spring seat, a valve sleeve, a cone table and an oil film damper from left to right, the outer surface of the oil film damper is fixed on the inner wall of the valve body and is arranged between the second cone valve oil cavity and the second oil inlet oil cavity, and an oil film is arranged in the oil film damper and plays a role in buffering when the cone valve spool is dynamically closed or opened, so that impact between the cone valve spool and the right end cover of the valve body is reduced, impact force and vibration between the cone table and the valve seat on the cone valve spool are reduced, the cone valve spool and the valve seat are protected, and the service life.
As further preferred, the applicant also improves the specific structure of the oil film damper, and the improved oil film damper comprises a third oil film plate fixed with the valve body, and a first oil film plate fixed with the valve core; the working principle of the oil film damper is that oil films are arranged among a first oil film plate, a second oil film plate and a third oil film plate, the third oil film plate is fixed on a valve body in a static mode, when a cone valve spool moves rightwards, the first oil film plate moves towards the second oil film plate at a certain speed, when the first oil film plate approaches the second oil film plate, oil film particles in the first oil film plate and the second oil film plate are mutually squeezed to enable the pressure to rise, the oil films in gaps are pushed to the periphery by the rising pressure, and the oil films between the first oil film plate and the second oil film plate radially flow to achieve a first layer of buffering effect; the second oil film plate is stressed to move towards the third oil film plate, and similarly, the oil film between the second oil film plate and the third oil film plate radially flows to play a second layer of buffering role. Therefore, when the cone valve spool moves in the valve body, the oil film damper can play a double-layer buffering role, impact caused by movement of the cone valve spool is further reduced, the structure of a product is effectively protected, and the service life is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the dynamic closing of the present invention;
FIG. 3 is a schematic diagram illustrating the dynamic opening of the present invention;
fig. 4 is a schematic structural view of an oil film damper.
The labels in the figures are: 1-a valve body; 2-a pilot oil port A; 3-a pilot oil port B; 4-an oil outlet; 5-an oil inlet; 6-a pilot valve; 7-valve housing; 8-cone valve core; 9-left end cap; 10-right piston; 11-a valve seat; 12-oil film damper; 13-spring seats; 14-a spring; 15-a spring cavity; 16-a spring housing; 17-adjusting screws; 19-a conical table; 20-a first oil film plate; 21-a second oil film plate; 22-a third oil film plate; 23-an oil film; 31-a first oil return port; 32-an oil inlet; 33-a second oil return port; 34-a pilot valve spool; 35-servo spiral groove; 36-pulling a rod; 37-a rotary electromagnet; 38-right end cap; 40-left piston; 41-a first oil inlet chamber; 42-a second oil inlet cavity; 43-a first pilot valve oil chamber; 44-a second pilot valve oil chamber; 45-a third pilot valve oil chamber; 46-a fourth pilot valve oil chamber; 47-cone valve; 48-a first cone valve oil chamber; 49-second cone valve oil cavity.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Example (b): the high-flow high-speed switch valve comprises a pilot valve 6, the pilot valve 6 is provided with a pilot valve core 34, the pilot valve core 34 is cylindrical, the pilot valve 6 is sequentially divided into a servo spiral groove 35, a first pilot valve oil chamber 43, a second pilot valve oil chamber 44, a third pilot valve oil chamber 45 and a fourth pilot valve oil chamber 46 from left to right through the pilot valve core 34, the first pilot valve oil chamber 43, the second pilot valve oil chamber 44, the third pilot valve oil chamber 45 and the fourth pilot valve oil chamber 46 are separated by a circular truncated cone protruding from the pilot valve core, the right protruding end of the pilot valve core 34 is connected with a pulling rod 36, and a rotary electromagnet 37 is arranged above the pulling rod 36; the first pilot valve oil cavity 43 is connected with a first oil return port 31, the second pilot valve oil cavity 44 is connected with an oil inlet 32, the third pilot valve oil cavity 45 is connected with a second oil return port 33, and the first oil return port 31 and the second oil return port 33 are finally gathered into the same oil return port for oil return.
The cone valve 47 is as shown in fig. 1, the cone valve 47 comprises a valve body 1, a pilot oil port a2 and a pilot oil port B3 are arranged above the valve body 1, the pilot oil port a2 is connected with a second pilot oil chamber 44 through an oil pipeline, the pilot oil port B3 is connected with a third pilot oil chamber 45 through an oil pipeline, the valve body 1 is sequentially provided with a spring sleeve 16, a left end cover 9, a valve seat 11 and a right end cover 38 from left to right, a right piston 10 is embedded in the right end cover 38, a left piston 40 is embedded in the left end cover 9, the right piston is arranged between the right end and the right end cover of the cone valve core, the left piston is arranged between the left end and the left end cover of the cone valve core, the left piston and the right piston are fixed on the cone valve core and can move left and right on the left end cover and the right end cover, and; a cone valve core 8 is arranged in the valve body 1, the cone valve core 8 is sequentially provided with a spring seat 13, a valve sleeve 7, a cone platform 19 and an oil film damper 12 from left to right, the cone platform comprises a cone surface matched with the valve seat, the valve sleeve is made of rubber materials and is arranged between the cone valve core and the valve body in a matched manner with the cone valve core, and the cone valve core is used for protecting the cone valve core and reducing friction; the valve seat can be made of rubber, an inclined surface matched with the conical surface is arranged on the contact surface of the valve seat and the conical table and used for preventing contact abrasion between the valve seat and the conical table when the conical valve core moves rightwards, the right side of the spring seat is connected with the left piston, the left side of the spring seat is fixed with the spring, and compression and extension of the spring are achieved along with movement of the valve core; a spring cavity 15 is formed between the spring sleeve 16 and the spring seat 13, a first oil inlet cavity 41 is formed between the left end cover 9 and the valve sleeve 7, a first cone valve oil cavity 48 is formed between the valve sleeve 7 and the valve seat 11, a second cone valve oil cavity 49 is formed between the valve seat 11 and the oil film damper 12, and a second oil inlet cavity 42 is formed between the oil film damper 12 and the right end cover 38; the right end of the right end cover 38 is provided with adjusting screws 17 in an up-and-down symmetrical manner; the upper part of the first oil inlet cavity 41 is connected with a pilot oil port A2, and the upper part of the second oil inlet cavity 42 is connected with a pilot oil port B3; an oil inlet 5 is arranged below the first cone valve oil cavity 48, an oil outlet 4 is arranged below the second cone valve oil cavity 49, and both the oil outlet and the oil inlet are large in drift diameter; the valve sleeve 7 is fixed on the cone valve core 8, a spring 14 fixed with a spring seat 13 is arranged in the spring cavity 15, and the valve sleeve 7 is matched with the cone valve core 8.
As shown in fig. 4, the oil film damper 12 sequentially includes a first oil film plate 20, a second oil film plate 21 and a third oil film plate 22 from left to right, the first oil film plate 20 and the second oil film plate 21 are disposed on the cone valve spool 8, the first oil film plate is fixed to the cone valve spool, the second oil film plate is disposed between the first oil film plate and the third oil film plate, a rubber sleeve is fixed to the second oil film plate, the rubber sleeve is sleeved on the spool, the second oil film plate can move left and right on the cone valve spool after being axially stressed, and the outer surface of the third oil film plate is fixed to the inner surface of the valve body 1; and oil films 23 are arranged among the first oil film plate 20, the second oil film plate 21 and the third oil film plate 22.
The working principle is as follows:
as shown in fig. 1-4, the utility model discloses wholly adopt the two stage valve structural style of cone valve and pilot valve, cone valve body top is provided with leads accuse hydraulic fluid port a and leads accuse hydraulic fluid port B, lead accuse hydraulic fluid port a and be connected with the second pilot valve oil pocket of pilot valve, lead accuse hydraulic fluid port B and be connected with the third pilot valve oil pocket of pilot valve, be equipped with servo spiral groove, first pilot valve oil pocket, second pilot valve oil pocket, third pilot valve oil pocket and fourth pilot valve oil pocket from a left side to the right side in proper order through the pilot valve case in the pilot valve body, and the right side of pilot valve case stretches out the end and is connected with the dead man, the dead man; when the rotary electromagnet rotates, the shifting rod drives the pilot valve core to generate rotary motion, and meanwhile, the servo spiral mechanism converts the rotary motion of the pilot valve core into axial motion of the pilot valve core in proportion and controls the pilot valve core to move left and right; when the pilot valve spool moves leftwards, an oil inlet of the pilot valve is communicated with a pilot oil port A through a second pilot oil cavity, pressure oil enters a first cone valve oil cavity of the cone valve from the second pilot oil cavity, meanwhile, a second cone valve oil cavity of the cone valve is communicated with a third pilot oil cavity of the pilot valve, oil is returned through a second oil return port, under the action of the pressure oil and a spring force, the cone valve spool moves rightwards rapidly until a cone table passes through a first oil inlet cavity, reaches the rightmost end of the first oil inlet cavity and is matched with a valve seat, at the moment, oil inlets and oil outlets of the first oil inlet cavity and the second oil inlet cavity are disconnected by the cone valve spool, and the cone valve achieves a locking function; on the contrary, when the pilot valve core moves rightwards, the oil inlet of the pilot valve is communicated with the pilot oil port B through the second pilot oil chamber, pressure oil enters the second pilot oil chamber of the cone valve from the second pilot oil chamber, meanwhile, the first cone valve oil chamber of the cone valve is communicated with the first pilot oil chamber of the pilot valve, the cone valve core moves leftwards under the action of the pressure oil and the spring force, the cone table leaves the valve seat leftwards and moves to the leftmost end of the first oil inlet chamber, and the oil inlets and the oil outlets of the first oil inlet chamber and the second oil inlet chamber are communicated. The cone valve comprises a valve body, the valve body is sequentially provided with a spring sleeve, a left end cover, a valve seat and a right end cover from left to right, a cone valve core is arranged in the valve body, and the cone valve core is sequentially provided with a spring seat, a valve sleeve, a cone table and an oil film damper from left to right; a third oil film plate of the oil film damper is fixed with the valve body, and a first oil film plate is fixed with the valve core; the working principle of the oil film damper is that oil films are arranged among a first oil film plate, a second oil film plate and a third oil film plate, the third oil film plate is fixed on a valve body in a static mode, when a cone valve spool moves rightwards, the first oil film plate moves towards the second oil film plate at a certain speed, when the first oil film plate approaches the second oil film plate, oil film particles in the first oil film plate and the second oil film plate are mutually squeezed to enable the pressure to rise, the oil films in gaps are pushed to the periphery by the rising pressure, and the oil films between the first oil film plate and the second oil film plate radially flow to achieve a first layer of buffering effect; the second oil film plate is stressed to move towards the third oil film plate, and similarly, the oil film between the second oil film plate and the third oil film plate radially flows to play a second layer of buffering role.
Claims (5)
1. The high-flow high-speed switch valve comprises a pilot valve (6), wherein the pilot valve (6) is provided with a pilot valve core (34), the pilot valve (6) is sequentially divided into a servo spiral groove (35), a first pilot valve oil cavity (43), a second pilot valve oil cavity (44), a third pilot valve oil cavity (45) and a fourth pilot valve oil cavity (46) from left to right through the pilot valve core (34), the right extending end of the pilot valve core (34) is connected with a pulling rod (36), and a rotary electromagnet (37) is arranged above the pulling rod (36); first pilot valve oil chamber (43) be connected with first oil return opening (31), second pilot valve oil chamber (44) are connected with oil inlet (32), third pilot valve oil chamber (45) are connected with second oil return opening (33), its characterized in that: the hydraulic control valve comprises a cone valve (47), wherein the cone valve (47) comprises a valve body (1), a pilot oil port A (2) and a pilot oil port B (3) are arranged above the valve body (1), the pilot oil port A (2) is connected with a second pilot oil chamber (44), the pilot oil port B (3) is connected with a third pilot oil chamber (45), and the valve body (1) is sequentially provided with a spring sleeve (16), a left end cover (9), a valve seat (11) and a right end cover (38) from left to right; a cone valve core (8) is arranged in the valve body (1), and the cone valve core (8) is sequentially provided with a spring seat (13), a valve sleeve (7), a conical table (19) and an oil film damper (12) from left to right; a spring cavity (15) is formed between the spring sleeve (16) and the spring seat (13), a first oil inlet cavity (41) is formed between the left end cover (9) and the valve sleeve (7), a first cone valve oil cavity (48) is formed between the valve sleeve (7) and the valve seat (11), a second cone valve oil cavity (49) is formed between the valve seat (11) and the oil film damper (12), and a second oil inlet cavity (42) is formed between the oil film damper (12) and the right end cover (38); a guide control oil port A (2) is connected above the first oil inlet cavity (41), and a guide control oil port B (3) is connected above the second oil inlet cavity (42); an oil inlet (5) is arranged below the first cone valve oil cavity (48), and an oil outlet (4) is arranged below the second cone valve oil cavity (49); the valve sleeve (7) is fixed on the cone valve core (8), a spring (14) fixed with the spring seat (13) is arranged in the spring cavity (15), and the valve sleeve (7) is matched with the cone valve core (8).
2. The high flow high speed switching valve of claim 1; the right end of the right end cover (38) is symmetrically provided with adjusting screws (17).
3. The high flow high speed switching valve of claim 1; the right piston (10) is embedded in the right end cover (38), the left piston (40) is embedded in the left end cover (9), and the right piston (10) and the left piston (40) are respectively fixed with the right end and the left end of the cone valve core (8).
4. The high flow high speed switching valve of claim 1; the oil film damper (12) sequentially comprises a first oil film plate (20), a second oil film plate (21) and a third oil film plate (22) from left to right, the first oil film plate (20) and the second oil film plate (21) are arranged on a cone valve core (8), and the third oil film plate is fixed with the valve body (1).
5. The high flow high speed switching valve of claim 4; oil films (23) are arranged among the first oil film plate (20), the second oil film plate (21) and the third oil film plate (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921177231.4U CN210164708U (en) | 2019-07-25 | 2019-07-25 | High-flow high-speed switch valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921177231.4U CN210164708U (en) | 2019-07-25 | 2019-07-25 | High-flow high-speed switch valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210164708U true CN210164708U (en) | 2020-03-20 |
Family
ID=69794777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921177231.4U Expired - Fee Related CN210164708U (en) | 2019-07-25 | 2019-07-25 | High-flow high-speed switch valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210164708U (en) |
-
2019
- 2019-07-25 CN CN201921177231.4U patent/CN210164708U/en not_active Expired - Fee Related
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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: 20200320 Termination date: 20200725 |