CN219623318U - Built-in two-position five-way double-control reversing valve - Google Patents
Built-in two-position five-way double-control reversing valve Download PDFInfo
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- CN219623318U CN219623318U CN202320282475.9U CN202320282475U CN219623318U CN 219623318 U CN219623318 U CN 219623318U CN 202320282475 U CN202320282475 U CN 202320282475U CN 219623318 U CN219623318 U CN 219623318U
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Abstract
The utility model relates to a built-in two-position five-way double-control reversing valve, and belongs to the technical field of hydraulic equipment control. The valve comprises a valve body, a main valve core, a pilot valve core and a spring, wherein an A oil port, a B oil port, a P1 oil port, a P2 oil port and a T oil port are arranged on the valve body, pilot joints and plugs are arranged at two ends of the valve cavity, pi oil ports are arranged in the pilot joints, the pilot valve core is assembled with a valve core hole of the main valve core in an inserting mode, when the main valve core is positioned at the left side, the A oil port and the B oil port are respectively communicated with the T oil port, and when the main valve core is positioned at the right side, the P1 oil port is communicated with the A oil port, and the P2 oil port is communicated with the B oil port. The utility model also comprises a reversing structure for automatically reversing the main valve core from the right position to the left position, and the utility model adopts a built-in design and installation space, does not need to be replaced integrally, has low maintenance cost, can realize that one valve can simultaneously control two actuating elements, and can realize the closing, opening and reversing operation of each oil port relatively simply.
Description
Technical Field
The utility model relates to a built-in two-position five-way double-control reversing valve, and belongs to the technical field of hydraulic equipment control.
Background
The hydraulic reversing valve used in the hydraulic equipment control is a direction control valve which utilizes control liquid pressure to push a valve core to change the flowing direction of fluid, and the reversing valve can adopt an external structure, but the external reversing valve is installed in the hydraulic equipment to increase the installation space of the hydraulic equipment, so that the external reversing valve is easy to interfere when installed in a limited space, the installation space of the hydraulic equipment is large, the assembly of the hydraulic equipment is affected, the external reversing valve is generally in an integral replacement mode during maintenance, and the subsequent maintenance cost of the reversing valve is high. The existing two-position five-way double-control valve adopts a combined valve mode, specifically adopts two-position three-way reversing valves to carry out reversing control, and the combined valve structure is complex in liquid path, troublesome in pipeline installation and subsequent maintenance, and meanwhile large in size, complex in oil path and influences popularization and application of the reversing valve.
Disclosure of Invention
The utility model provides a built-in two-position five-way double-control reversing valve aiming at the defects in the prior art.
The technical scheme for solving the technical problems is as follows: the utility model provides a built-in two-position five-way double control reversing valve, includes the valve body, locates main valve core, the guide case and the spring of setting between main valve core and guide case in the valve pocket of valve body, be equipped with A hydraulic fluid port, B hydraulic fluid port, P1 hydraulic fluid port, P2 hydraulic fluid port and T hydraulic fluid port on the valve body, left end, the right-hand member of valve pocket have respectively sealed connection guide joint and end cap, guide joint in be equipped with Pi hydraulic fluid port, be equipped with the case hole in the main valve core, the left end of guide case with the case hole is inserted and is fit, when the main valve core is in the left bit, A hydraulic fluid port and B hydraulic fluid port all with T hydraulic fluid port intercommunication, when the main valve core is in the right bit, P1 hydraulic fluid port with A hydraulic fluid port intercommunication and P2 hydraulic fluid port with B hydraulic fluid port intercommunication.
The beneficial effects of the utility model are as follows: when the P1 oil port and the P2 oil port enter hydraulic oil with certain pressure, the left end face of the main valve core is pressed on the inner end face of the pilot joint under the action of the elasticity of the spring, and the hydraulic oil of the A oil port and the B oil port can only return to the T oil port through the main valve core and the pilot valve core; when the Pi oil port enters hydraulic oil with certain pressure, the main valve core compresses the spring to move rightwards to the contact surface of the pilot valve core and the spring under the pressure action of the hydraulic oil, at the moment, the P1 oil port is communicated with the A oil port through the main valve core, the hydraulic oil enters the A oil port from the P1 oil port, the P2 oil port is communicated with the B oil port through the main valve core, the hydraulic oil enters the B oil port from the P2 oil port, and the hydraulic oil can enter the B oil port from the P2 oil port. The built-in valve has compact structure, no external installation space is needed in the built-in valve, the internal installation space is also small, the components can be replaced according to the damage condition of the components in the valve body during maintenance, the whole replacement is not needed, and the maintenance cost is low; the two-position five-way double-control reversing valve can realize that one valve can simultaneously control two actuating elements, and can relatively simply realize the closing, opening and reversing operation of each oil port.
On the basis of the technical scheme, the utility model can be improved as follows.
Further, the reversing structure is used for automatically reversing the main valve core from the right position to the left position, the reversing structure comprises a reversing channel arranged between the valve body and the main valve core, the P1 oil port and/or the P2 oil port are/is communicated with the reversing channel, a first annular table and a second annular table are arranged on the main valve core, the first annular table and the second annular table are respectively arranged on the left side and the right side of the reversing channel, and the cross section area of the first annular table is larger than that of the second annular table.
The beneficial effect of adopting above-mentioned further scheme is, through the control internal pressure size with the automatic switching-over of control main valve core, the switching-over valve can realize the case automatic switching-over after internal pressure risees, reaches intelligent control purpose, and the switching-over is that the hydraulic pressure is different to cause the main valve core activity on the main valve core, and the hydraulic oil of P1 hydraulic fluid port or P2 hydraulic fluid port or P1 and P2 hydraulic fluid port gets into the switching-over passageway, because the area of action on the left side of switching-over passageway is big, and the area of action on the right side is little, thereby the different atress of cross-sectional area is different about on the main valve core realizes the automatic switching-over of main valve core.
Further, a first channel for communicating the oil port A with the valve core hole when the main valve core is at the left position and a second channel for communicating the oil port B with the valve core hole when the main valve core is at the left position are arranged on the main valve core, and a backflow channel for communicating the oil port T with the valve core hole when the main valve core is at the left position is arranged on the pilot valve core.
The main valve core has the beneficial effects that the first channel and the second channel which are communicated with the working oil inlet and the valve core hole are arranged on the main valve core, and the first channel and the second channel are matched with the backflow channel on the pilot valve core, so that the two working oil inlets can be respectively communicated with the T oil port when the left position of the main valve core is met, and the hydraulic oil return requirement when the main valve core is at the left position is met.
Further, the first passage includes a first annulus and at least one radially disposed first orifice in communication with the first annulus, and/or the second passage includes a second annulus and at least one radially disposed second orifice in communication with the second annulus.
The main valve core is provided with at least one throttle hole, and the throttle hole is arranged on the main valve core and is used for enabling hydraulic oil to flow into the T-shaped oil port smoothly through the valve core hole when the main valve core is at the left position.
Further, the oil port B is communicated with the oil port P2 through the second loop when the main valve core is at the right position.
The beneficial effect of adopting above-mentioned further scheme is that, the second circuit not only is in left position intercommunication B hydraulic fluid port and T hydraulic fluid port at the main valve core, but also can communicate B hydraulic fluid port and P2 hydraulic fluid port when the main valve core is in right position.
Further, a first annular groove communicated with the P1 oil port is formed in the outer surface of the main valve core, and the first annular groove is communicated with the P1 oil port and the A oil port when the main valve core is at the right position.
The beneficial effect of adopting above-mentioned further scheme is, the intercommunication of first annular and P1 hydraulic fluid port can satisfy the requirement that A hydraulic fluid port can not pass through first annular and P1 hydraulic fluid port intercommunication when main valve core right side and main valve core left side when A hydraulic fluid port is through first annular and P1 hydraulic fluid port intercommunication.
Further, an annular land is arranged in the valve core hole, the pilot valve core comprises a head and a rod, and the spring is sleeved on the rod between the head and the annular land.
The beneficial effect of adopting above-mentioned further scheme is, the spring is compressed and is located the shoulder hole of main valve core when the case is in the right side, the second passageway moves to the sealing connection position between the pole portion of guide's case and the main valve core to the right side, backflow channel on the guide's case does not communicate with the second passageway this moment, backflow channel on the guide's case is including setting up axial passageway and the radial passageway of at least one in the pole portion, axial passageway's left end and case hole intercommunication, right side and radial passageway intercommunication, radial passageway can with T hydraulic fluid port intercommunication when the main valve core is in the left side, the right-hand member face of main valve core is closely laminated with the head of guide's case when the main valve core is in the right side and is sealed.
Further, a first annular cavity communicated with the P1 oil port is formed in the valve body, and/or a second annular cavity communicated with the P2 oil port is formed in the valve body.
The beneficial effect of adopting above-mentioned further scheme is, has the first ring chamber of hydraulic oil corresponding with P1 hydraulic fluid port on the valve body, and this first ring chamber still can be with the first annular groove intercommunication on the main valve core when main valve core is in the right side and realize the intercommunication between A hydraulic fluid port and the P1 hydraulic fluid port.
Furthermore, a throttle plug is arranged on the oil port A and/or the oil port B.
The hydraulic flow through the oil port is regulated, local state change in the system is buffered, and oscillation is reduced.
Further, the plug is connected with the valve body through threads, and/or the pilot joint is connected with the valve body through threads.
The further scheme has the beneficial effects that the plug is connected with the valve body through threads; the pilot joint can also be connected with the valve body through threads.
Furthermore, a sealing ring is also arranged between the plug and the valve body and/or between the pilot joint and the valve body.
The beneficial effect of adopting the further scheme is that a sealing ring is arranged between the plug and the valve body; a sealing ring is arranged between the pilot joint and the valve body, and the tightness between the position of the plug or the pilot joint and the valve body is further improved through the sealing ring.
Drawings
FIG. 1 is a schematic view of the main valve core of the present utility model in the left position;
FIG. 2 is a schematic view of the main valve core of the present utility model in the right position;
FIG. 3 is a hydraulic schematic of the present utility model;
in the figure, 1, a plug; 2. a pilot spool; 21. a return passage; 3. a spring; 4. a throttle screw plug; 5. a main spool; 51. a valve core hole; 52. a first loop; 53. a first orifice; 54. a second loop; 55. a second orifice; 56. a first ring groove; 57. a reversing port; 58. a first ring table; 59. a second ring table; 6. a valve body; 61. a first annular cavity; 62. a second annular chamber; 7. a pilot joint; 8. and (3) sealing rings.
Detailed Description
The principles and features of the present utility model are described below in connection with examples, which are set forth only to illustrate the present utility model and not to limit the scope of the utility model.
As shown in fig. 1-3, the built-in two-position five-way double-control reversing valve comprises a valve body 6, a main valve core 5, a pilot valve core 2 and a spring 3, wherein the main valve core 5, the pilot valve core 2 and the spring 3 are arranged between the main valve core 5 and the pilot valve core 2, an oil port A, an oil port B, an oil port P1, an oil port P2 and an oil port T are arranged on the valve body 6, a pilot joint 7 and a plug 1 are respectively and hermetically connected to the left end and the right end of the valve cavity, a Pi oil port is arranged in the pilot joint 7, a valve core hole 51 is arranged in the main valve core 5, the left end of the pilot valve core 2 is assembled with the valve core hole 51 in an inserting mode, the oil port A and the oil port B are communicated with the oil port T when the main valve core 5 is positioned at the left position, and the oil port P1 is communicated with the oil port A and the oil port P2 is communicated with the oil port B when the main valve core 5 is positioned at the right position.
The left or right position of the main valve core corresponds to the left or right position of the structure diagram.
The reversing structure comprises a reversing channel arranged between the valve body and the main valve core, the reversing channel comprises a reversing port 57 arranged on the valve body, the P1 oil port and/or the P2 oil port are communicated with the reversing channel through the reversing port, a first annular table 58 and a second annular table 59 are arranged on the main valve core, the first annular table and the second annular table are respectively arranged on the left side and the right side of the reversing channel, and the cross section area of the first annular table is larger than that of the second annular table. The valve core automatic reversing can be realized after the internal pressure of the reversing valve rises by controlling the internal pressure so as to control the automatic reversing of the main valve core, the intelligent control purpose is achieved, the reversing is that the main valve core moves due to the fact that the oil pressure acts on the main valve core with different forces, the hydraulic oil of the P1 oil port or the P2 oil port or the P1 and P2 oil ports enters a reversing channel through the reversing port, the oil channels communicated with the reversing port are not shown in the figure, and the automatic reversing of the main valve core is realized due to the fact that the acting area of the left side of the reversing channel is large, the acting area of the right side is small, and the different stresses of the left cross sectional area and the right sectional area on the main valve core are different.
The main valve core 5 is provided with a first channel for communicating the oil port A with the valve core hole 51 when the main valve core 5 is at the left position and a second channel for communicating the oil port B with the valve core hole 51 when the main valve core 5 is at the left position, and the pilot valve core 2 is provided with a backflow channel 21 for communicating the oil port T with the valve core hole 51 when the main valve core 5 is at the left position. The main valve core 5 is provided with a first channel and a second channel which are communicated with the working oil inlet and the valve core hole 51, and the first channel and the second channel are matched with the backflow channel 21 on the pilot valve core 2, so that the two working oil inlets can be respectively communicated with the T oil port when the left position of the main valve core 5 is met, and the hydraulic oil return requirement when the left position of the main valve core 5 is met.
The first passage includes a first annulus 52 and at least one radially disposed first orifice 53 in communication with the first annulus 52, and/or the second passage includes a second annulus 54 and at least one radially disposed second orifice 55 in communication with the second annulus 54. The throttle is radially arranged on the main valve core 5, and at least one throttle is arranged on the throttle to realize that hydraulic oil can smoothly flow into the T-shaped oil port through the valve core hole 51 when the main valve core 5 is at the left position.
And the oil port B is communicated with the oil port P2 through the second loop 54 when the main valve core 5 is at the right position. The second ring 54 not only communicates the B port with the T port when the main spool 5 is in the left position, but also communicates the B port with the P2 port when the main spool 5 is in the right position.
The outer surface of the main valve core 5 is provided with a first annular groove 56 communicated with the P1 oil port, and the first annular groove 56 is communicated with the P1 oil port and the A oil port when the main valve core 5 is at the right position. The first annular groove 56 is communicated with the P1 oil port, so that the requirements that the A oil port is communicated with the P1 oil port through the first annular groove 56 when the main valve core 5 is at the right position and the A oil port cannot be communicated with the P1 oil port through the first annular groove 56 when the main valve core 5 is at the left position can be met.
The valve core hole 51 is internally provided with an annular shoulder, the pilot valve core 2 comprises a head part and a rod part, and the spring 3 is sleeved on the rod part between the head part and the annular shoulder. The right side of the annular shoulder forms a spring 3 cavity for accommodating the spring 3, the spring 3 is compressed and located in a stepped hole of the main valve core 5 when the valve core is in the right position, the second channel moves to the right to a sealing connection position between the rod part of the pilot valve core 2 and the main valve core 5, at the moment, the backflow channel 21 on the pilot valve core 2 is not communicated with the second channel, the backflow channel 21 on the pilot valve core 2 comprises an axial channel and at least one radial channel which are arranged in the rod part, the left end of the axial channel is communicated with the valve core hole 51, the right side is communicated with the radial channel, the radial channel can be communicated with a T oil port when the main valve core 5 is in the left position, and the right end face of the main valve core 5 is tightly attached and sealed with the head part of the pilot valve core 2 when the main valve core 5 is in the right position.
A first annular cavity 61 communicated with the P1 oil port is arranged in the valve body 6, and/or a second annular cavity 62 communicated with the P2 oil port is arranged in the valve body 6. The valve body 6 is provided with a first hydraulic oil annular cavity 61 corresponding to the P1 oil port, and the first annular cavity 61 can still be communicated with the first annular groove 56 on the main valve core 5 to realize the communication between the A oil port and the P1 oil port when the main valve core moves right.
Further, a throttle plug 4 is arranged on the oil port A and/or the oil port B.
The plug 1 is connected with the valve body 6 through threads, and/or the pilot joint 7 is connected with the valve body 6 through threads. The plug 1 is connected with the valve body 6 through threads; the pilot connection 7 can also be screwed to the valve body 6.
Sealing rings 8 are also provided between the plug 1 and the valve body 6 and/or between the pilot joint 7 and the valve body 6. A sealing ring 8 is arranged between the plug 1 and the valve body 6; a sealing ring 8 is arranged between the pilot joint 7 and the valve body 6, and the sealing performance between the position of the plug 1 or the pilot joint 7 and the valve body 6 is further improved through the sealing ring 8.
The reversing valve is arranged on a valve body 6, a sealing plug 1 and a pilot joint 7 are arranged on the valve body 6 and used for fixing and limiting the travel of the reversing valve, a main valve core 5 is arranged in a valve cavity of the valve body 6, a valve core hole 51 and a spring 3 cavity are formed in the main valve core 5, the small end of a pilot valve core 2 is arranged in the valve core hole 51 of the main valve core 5, a spring 3 is arranged in the spring 3 cavity of the main valve core 5, the main valve core 5 is pressed to the end face of the pilot joint 7 by the action of the spring force of the spring 3 to realize the sealing of one end of the main valve core 5, the other end of the spring 3 is contacted with the large end of the pilot valve core 2, and the pilot valve core 2 is pressed to the end face of the plug 1 to realize the sealing of one end of the pilot valve core 2.
Working principle: when the P1 oil port and the P2 oil port enter hydraulic oil with certain pressure, the main valve core is pressed to the end face of the pilot joint under the action of the spring force of the spring, and at the moment, the hydraulic oil of the oil port A and the hydraulic oil of the oil port B only can pass through the throttling screw plug, the channel of the main valve core and the pilot valve core and return to the oil port T. When the Pi oil port enters hydraulic oil with certain pressure, the main valve core moves rightward to the contact surface of the pilot valve core and the spring under the action of hydraulic pressure, at the moment, the P1 oil port is communicated with the A oil port through a first annular groove of the main valve core, hydraulic oil enters the A oil port from the P1 oil port through a throttle screw plug, meanwhile, the P2 oil port is communicated with the B oil port through a second annular groove of the main valve core, and hydraulic oil enters the B oil port from the P2 oil port through the throttle screw plug. When the P1 oil port, the P2 oil port and the Pi oil port simultaneously enter hydraulic oil with certain pressure, and the pressure of the P1 oil port or the P2 oil port is increased, because the left and right acting areas of the main valve core at the P1/P2 oil ports are different, hydraulic pressure is different, the main valve core is subjected to left resultant force at the moment, when the magnitude of the resultant force and the spring force is enough to overcome the acting force of the Pi oil port hydraulic pressure on the valve core, the main valve core is changed to move left, at the moment, the P1 oil port is not communicated with the B oil port through the main valve core opening, and the P2 oil port is not communicated with the A oil port through the main valve core opening, at the moment, the hydraulic oil at the A oil port and the B oil port can only pass through a throttle screw plug, an orifice of the main valve core and a pilot valve core to return to the T oil port, and the two-position five-way double-control reversing valve can realize simultaneous control of two actuating elements by using the two-position five-way reversing valve, and the closing, opening and reversing operation of each oil port can be realized relatively conveniently.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. The utility model provides a built-in two-position five-way double control reversing valve, its characterized in that includes valve body (6), locates main valve core (5) in the valve pocket of valve body (6), guide case (2) and set up in main valve core (5) and guide case (2) between spring (3), be equipped with A hydraulic fluid port, B hydraulic fluid port, P1 hydraulic fluid port, P2 hydraulic fluid port and T hydraulic fluid port on valve body (6), the right-hand member of valve pocket is sealed, left end sealing connection has guide joint (7), guide joint (7) on be equipped with the Pi hydraulic fluid port with the valve pocket intercommunication, the left end of guide case (2) is through with setting up case hole (51) in main valve core (5) insert the fit, main valve core (5) are in the left bit, A hydraulic fluid port and B hydraulic fluid port all with T hydraulic fluid port intercommunication, P1 hydraulic fluid port with A hydraulic fluid port and P2 hydraulic fluid port with B hydraulic fluid port intercommunication when main valve core (5) are in the right bit.
2. The built-in two-position five-way double-control reversing valve according to claim 1, further comprising a reversing structure, wherein the reversing structure comprises a reversing channel arranged between the valve body and the main valve core, the P1 oil port and/or the P2 oil port are communicated with the reversing channel, a first annular table (58) and a second annular table (59) are arranged on the main valve core, the first annular table (58) and the second annular table (59) are respectively arranged on the left side and the right side of the reversing channel, and the cross section area of the first annular table (58) is larger than that of the second annular table (59).
3. The built-in two-position five-way double-control reversing valve according to claim 1 or 2, wherein a first channel for communicating an oil port A with a valve core hole (51) when the main valve core (5) is in a left position and a second channel for communicating an oil port B with the valve core hole (51) when the main valve core (5) is in the left position are arranged on the main valve core (5), and a backflow channel (21) for communicating an oil port T with the valve core hole (51) when the main valve core (5) is in the left position is arranged on the pilot valve core (2).
4. A two-position five-way double control reversing valve according to claim 3, wherein the first passage comprises a first ring (52) and at least one radially arranged first orifice (53) communicating with the first ring (52), and/or the second passage comprises a second ring (54) and at least one radially arranged second orifice (55) communicating with the second ring (54).
5. The built-in two-position five-way double control reversing valve according to claim 4, wherein the port B is communicated with the port P2 through the second loop (54) when the main valve spool (5) is in the right position.
6. The built-in two-position five-way double-control reversing valve according to claim 1 or 2, wherein a first annular groove (56) communicated with the P1 oil port is arranged on the outer surface of the main valve core (5), and the first annular groove (56) is communicated with the P1 oil port and the A oil port when the main valve core (5) is in a right position.
7. The built-in two-position five-way double control reversing valve according to claim 1 or 2, characterized in that an annular land is arranged in the valve core hole (51), the pilot valve core (2) comprises a head part and a rod part, and the spring (3) is sleeved on the rod part between the head part and the annular land.
8. The built-in two-position five-way double-control reversing valve according to claim 1 or 2, wherein a first annular cavity (61) communicated with the P1 oil port is arranged in the valve body (6) and/or a second annular cavity (62) communicated with the P2 oil port is arranged in the valve body (6).
9. The built-in two-position five-way double-control reversing valve according to claim 1 or 2, wherein a throttle plug (4) is arranged on the oil port A and/or the oil port B.
10. The built-in two-position five-way double-control reversing valve according to claim 1 or 2, characterized in that a plug (1) is connected to the right end of the valve cavity in a sealing manner, the plug (1) is connected with the valve body (6) through threads, and/or the pilot joint (7) is connected with the valve body (6) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320282475.9U CN219623318U (en) | 2023-02-21 | 2023-02-21 | Built-in two-position five-way double-control reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320282475.9U CN219623318U (en) | 2023-02-21 | 2023-02-21 | Built-in two-position five-way double-control reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219623318U true CN219623318U (en) | 2023-09-01 |
Family
ID=87777414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320282475.9U Active CN219623318U (en) | 2023-02-21 | 2023-02-21 | Built-in two-position five-way double-control reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219623318U (en) |
-
2023
- 2023-02-21 CN CN202320282475.9U patent/CN219623318U/en active Active
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