CN214404810U - High-low pressure automatic flow-dividing one-way valve device - Google Patents
High-low pressure automatic flow-dividing one-way valve device Download PDFInfo
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- CN214404810U CN214404810U CN202120039618.4U CN202120039618U CN214404810U CN 214404810 U CN214404810 U CN 214404810U CN 202120039618 U CN202120039618 U CN 202120039618U CN 214404810 U CN214404810 U CN 214404810U
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Abstract
The utility model discloses a high-low pressure automatic shunting one-way valve device, which solves the problem that the fatigue stress of the oil circuit is large when the high-low pressure hydraulic oil of the one-way valve passes through the same oil circuit in the prior art, the high-low pressure automatic shunting one-way valve device comprises an outer shell, a first inner shell, a second inner shell, a valve core and a pre-tightening component, wherein the first inner shell is fixed in the outer shell, the second inner shell is movably arranged in the first inner shell, one end of the first inner shell, which is close to an oil outlet, is provided with a high-pressure relief hole, one end of the second inner shell, which is close to the oil outlet, is provided with a low-pressure relief hole, the first pre-tightening piece and the second pre-tightening piece respectively provide downward pre-tightening force for the second inner shell and the valve core, so that the high-pressure relief hole is closed by the second inner shell, the low-pressure relief hole is opened by the valve core, when the low-pressure state, the hydraulic oil passes through the low-pressure flow passage, when the high pressure state, the hydraulic oil passes through the high-pressure flow passage, the low-pressure flow passage is separated from the high-pressure flow passage, so that the fatigue stress caused by overlarge pressure change in the same oil passage is avoided.
Description
Technical Field
The utility model relates to a technical field of check valve refers in particular to an automatic reposition of redundant personnel check valve device of high-low pressure.
Background
The check valve is commonly called a check valve, which is also called a check valve or a check valve and is used for preventing reverse flow of oil flow in a hydraulic system or preventing reverse flow of compressed air in a pneumatic system.
For the existing high-pressure plunger oil pump device, the working pressure is generally about 10 Mpa-100 Mpa, and the pressure change is large, but in the prior art, the flow of high pressure and low pressure cannot be shunted, so that the fatigue stress of the system is large due to the change of high pressure and low pressure, and the service life of the system is short easily.
Disclosure of Invention
The utility model discloses having considered aforementioned problem and having made, utility model's aim at provides an automatic reposition of redundant personnel check valve device of high-low pressure, can shunt high-pressure fluid and low-pressure fluid.
In order to achieve the above object, the utility model provides an automatic reposition of redundant personnel check valve device of high-low pressure, include:
the oil outlet is formed in one end of the shell;
the first inner shell is arranged in the outer shell and surrounds the outer shell to form a high-pressure flow passage, and a high-pressure relief hole which is communicated with the high-pressure flow passage and the oil outlet is formed in the first inner shell;
the second inner shell is arranged in the first inner shell in a lifting manner and is used for closing or opening the high-pressure relief hole, a low-pressure flow channel is arranged in the second inner shell, and a low-pressure relief hole communicated with the low-pressure flow channel and the oil outlet hole is arranged in the second inner shell;
the valve core is arranged in the second inner shell and used for closing or opening the low-pressure relief hole;
the pretension subassembly, the pretension subassembly includes first pretension piece and second pretension piece, first pretension piece sets up first inner shell with between the second inner shell, be used for driving the second inner shell is closed high pressure relief hole, the second pretension piece sets up in the second inner shell, be used for driving the case is opened low pressure relief hole, just the pretightning force of first pretension piece is greater than the pretightning force of second pretension piece.
According to the high-low pressure automatic flow dividing one-way valve device, the first pre-tightening piece comprises a first spring, the first spring is sleeved on the outer side of the first inner shell, and the first inner shell ascends or descends to drive the first spring to compress or expand.
According to the high-low pressure automatic flow dividing one-way valve device, the second pre-tightening piece comprises a second spring and a valve rod, the valve core is arranged below the low-pressure relief hole, one end of the valve rod is movably arranged in the second inner shell and connected with the second spring, the other end of the valve rod penetrates through the low-pressure relief hole to be connected with the valve core, and the valve core rises or falls to drive the second spring to rise or fall.
According to the high-low pressure automatic flow dividing one-way valve device, the stiffness coefficient of the second spring is smaller than that of the first spring.
According to a high-low pressure automatic reposition of redundant personnel check valve device, the one end of shell is equipped with the bottom plate, the oil outlet sets up on the bottom plate, the bottom of first inner shell with the bottom plate is fixed to be met, high-pressure release hole sets up the bottom of first inner shell, the bottom of second inner shell with the bottom plate activity meets, works as the bottom of second inner shell with when the bottom plate meets, the second inner shell is used for closing high-pressure release hole.
According to the automatic reposition of redundant personnel check valve device of high-low pressure, the bottom of second inner shell is equipped with the slant spoiler, the low pressure relief hole sets up on the slant spoiler, just low pressure relief hole below is equipped with the bell mouth, the case sets up in the bell mouth.
The utility model discloses following beneficial effect has: when the fluid is in a low-pressure state, the low-pressure relief hole is opened, the high-pressure relief hole is closed, and when the fluid is in a high-pressure state, the low-pressure relief hole is closed, the high-pressure relief hole is opened, so that the low-pressure flow passage and the high-pressure flow passage can be separated, the pressure in the same oil passage is stabilized, the fatigue stress caused by pressure change can be avoided, and the service life of the oil passage is prolonged.
Drawings
FIG. 1 is an appearance diagram of the overall structure of the present invention;
fig. 2 is a cross-sectional view of the overall structure of the present invention;
fig. 3 is a schematic view of the assembly of the second preload member and the valve core of the present invention.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 3, a high-low pressure automatic flow-dividing check valve device comprises:
the hydraulic oil pump comprises a shell 100, wherein one end of the shell 100 is provided with an oil outlet 110, the other end of the shell 100 is provided with an oil inlet, and hydraulic oil enters from the oil inlet and flows out of the oil outlet 110.
In this embodiment, a bottom plate 120 is disposed at the bottom end of the casing 100, and the oil outlet 110 is disposed on the bottom plate 120, so that hydraulic oil enters from the top of the casing 100 and exits from the oil outlet 110 at the bottom, and the gravity can be used to save the motion power of the hydraulic oil.
The bottom end of the second inner case 300 is movably connected to the bottom plate 120, and when the bottom end of the second inner case 300 is connected to the bottom plate 120, the second inner case 300 is used to close the high pressure relief hole 220.
The first inner casing 200 is arranged in the outer casing 100, and surrounds the outer casing 100 to form a high pressure flow passage 210, and a high pressure relief hole 220 communicating the high pressure flow passage 210 with the oil outlet 110 is arranged on the first inner casing 200, the bottom end of the first inner casing 200 is fixedly connected with the bottom plate 120, the high pressure relief hole 220 is arranged at the bottom end of the first inner casing 200, when the pressure of hydraulic oil is higher, the hydraulic oil can flow to the oil outlet 110 through the high pressure flow passage 210 and the high pressure relief hole 220, and flow out from the oil outlet 110.
The second inner casing 300 is arranged in the first inner casing 200 in a lifting manner, and is used for closing or opening the high-pressure relief hole 220, the bottom end of the second inner casing 300 is movably connected with the bottom plate 120, when the bottom end of the second inner casing 300 is connected with the bottom plate 120, the second inner casing 300 seals a flow channel between the high-pressure relief hole 220 and the oil outlet 110, closes the high-pressure relief hole 220, a low-pressure flow channel 310 is arranged in the second inner casing 300, and a low-pressure relief hole 320 communicated with the low-pressure flow channel 310 and the oil outlet 110 is arranged in the second inner casing 300.
And a valve spool 400, the valve spool 400 being disposed in the second inner case 300 to close or open the low pressure relief hole 320.
The pre-tightening assembly 500, the pre-tightening assembly 500 includes a first pre-tightening member 510 and a second pre-tightening member 520, the first pre-tightening member 510 is disposed between the first inner housing 200 and the second inner housing 300 and used for driving the second inner housing 300 to close the high pressure relief hole 220, the first pre-tightening member 510 provides a downward pre-tightening force to the second outer housing 100, so that the bottom end of the first inner housing 200 is tightly attached to the bottom plate 120 and further closes the high pressure relief hole 220, the second pre-tightening member 520 is disposed in the second inner housing 300 and used for driving the spool 400 to open the low pressure relief hole 320, the second pre-tightening member 520 provides a pre-tightening force to the spool 400, so that the spool 400 is far away from the low pressure relief hole 320 and opens the low pressure relief hole 300, when low pressure hydraulic oil is introduced, the high pressure flow passage 210 is closed and only flows into the low pressure flow passage 310 and then flows out through the low pressure relief hole 320 and the oil outlet 110, and as the oil pressure rises, the pressure provided by the hydraulic oil is greater than the pre-tightening force of the second pre-tightening member 520, the valve core 400 moves upward until the valve core 400 moves to a position where the low pressure relief hole 320 is closed, and the pretightening force of the first pretightening member 510 is greater than the pretightening force of the second pretightening member 520, and in the process of the movement of the valve core 400, the pretightening force provided by the first pretightening member 510 to the second inner housing 300 is still greater than the hydraulic force, the second inner housing 300 does not move, after a certain pressure is continuously increased, the hydraulic oil becomes high pressure oil, and at this time, the pressure greater than the pretightening force of the first pretightening member 510 drives the second inner housing 300 to move upward, so as to open the high pressure relief hole 220, and at this time, the low pressure relief hole 320 is already closed. The reverse and positive pressure reduction processes are the same, so that the high-pressure flow passage 210 and the low-pressure flow passage 310 are separated, and the system fatigue stress caused by overlarge pressure change in the same oil circuit is avoided.
The first preload member 510 includes a first spring 511, the first spring 511 is sleeved on the outer side of the first inner housing 200, the first inner housing 200 ascends or descends to drive the first spring 511 to compress or expand, the first inner housing 200 ascends to further compress the first spring 511, and the first spring 511 automatically drives the first inner housing 200 to descend to close the high pressure relief hole 220 after the hydraulic oil pressure is reduced.
The second preload member 520 includes a second spring 521 and a stem 522, the spool 400 is disposed below the low pressure relief hole 320, one end of the stem 522 is movably disposed in the second housing 100 and connected to the second spring 521, and the other end of the stem 522 passes through the low pressure relief hole 320 and is connected to the spool 400, the second spring 521 is driven to ascend or descend by the ascending or descending of the spool 400, and similarly, the second spring 521 is further compressed by the ascending of the spool 400, and when the pressure is reduced, the second spring 521 drives the spool 400 to move downward through the stem 522 to open the low pressure relief hole 320.
The stiffness coefficient of the second spring 521 is smaller than that of the first spring 511.
The bottom of the second inner casing 300 is provided with an oblique spoiler 330, the low pressure relief hole 320 is provided on the oblique spoiler 330, a tapered hole 331 is provided below the low pressure relief hole 320, the spool 400 is provided in the tapered hole 331, when the pressure of the hydraulic oil is low, the hydraulic oil flows out through the low pressure relief hole 320, the tapered hole 331 and the oil outlet 110, and when the pressure of the hydraulic oil is increased, the spool 400 is driven to move upward.
The utility model provides a high-low pressure automatic diversion one-way valve device, which is characterized in that a fixed first inner shell is arranged in an outer shell, a movable second inner shell is arranged in the first inner shell, a high-pressure flow passage is arranged between the first inner shell and the outer shell, a low-pressure flow passage is arranged in the second inner shell, an oil outlet is arranged at the bottom of the outer shell, a high-pressure relief hole is arranged at one end of the first inner shell close to the oil outlet, one end of the second inner shell, which is close to the oil outlet, is provided with a low-pressure relief hole, the first pre-tightening piece and the second pre-tightening piece provide downward pre-tightening force for the second inner shell and the valve core, so that the second inner shell closes the high-pressure relief hole, the valve core opens the low-pressure relief hole, in the low pressure state, the hydraulic oil passes through the low pressure flow passage, and in the high pressure state, the hydraulic oil passes through the high pressure flow passage, so that the low pressure flow passage is separated from the high pressure flow passage, and the fatigue stress caused by overlarge pressure change in the same flow passage is avoided.
The technical solutions of the present invention have been described in detail with reference to the accompanying drawings, and the described embodiments are used to help understand the ideas of the present invention. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the claims.
Claims (6)
1. A high-low pressure automatic flow-dividing one-way valve device is characterized by comprising:
the oil outlet is formed in one end of the shell;
the first inner shell is arranged in the outer shell and surrounds the outer shell to form a high-pressure flow passage, and a high-pressure relief hole which is communicated with the high-pressure flow passage and the oil outlet is formed in the first inner shell;
the second inner shell is arranged in the first inner shell in a lifting manner and is used for closing or opening the high-pressure relief hole, a low-pressure flow channel is arranged in the second inner shell, and a low-pressure relief hole communicated with the low-pressure flow channel and the oil outlet hole is arranged in the second inner shell;
the valve core is arranged in the second inner shell and used for closing or opening the low-pressure relief hole;
the pretension subassembly, the pretension subassembly includes first pretension piece and second pretension piece, first pretension piece sets up first inner shell with between the second inner shell, be used for driving the second inner shell is closed high pressure relief hole, the second pretension piece sets up in the second inner shell, be used for driving the case is opened low pressure relief hole, just the pretightning force of first pretension piece is greater than the pretightning force of second pretension piece.
2. The automatic high and low pressure flow dividing check valve device according to claim 1, wherein the first preload member comprises a first spring, the first spring is sleeved outside the first inner housing, and the first inner housing ascends or descends to compress or expand the first spring.
3. The high-low pressure automatic flow dividing one-way valve device according to claim 2, wherein the second preload member comprises a second spring and a valve rod, the valve core is arranged below the low pressure relief hole, one end of the valve rod is movably arranged in the second inner shell and connected with the second spring, the other end of the valve rod penetrates through the low pressure relief hole to be connected with the valve core, and the valve core ascends or descends to drive the second spring to ascend or descend.
4. A high and low pressure automatic flow dividing check valve device according to claim 3, wherein the stiffness coefficient of said second spring is smaller than the stiffness coefficient of said first spring.
5. The automatic high-low pressure shunt one-way valve device according to claim 1, wherein a bottom plate is arranged at one end of the outer shell, the oil outlet is arranged on the bottom plate, the bottom end of the first inner shell is fixedly connected with the bottom plate, the high-pressure relief hole is arranged at the bottom end of the first inner shell, the bottom end of the second inner shell is movably connected with the bottom plate, and when the bottom end of the second inner shell is connected with the bottom plate, the second inner shell is used for closing the high-pressure relief hole.
6. The automatic high-low pressure flow dividing one-way valve device according to claim 5, wherein an inclined spoiler is arranged at the bottom of the second inner casing, the low pressure relief hole is formed in the inclined spoiler, a tapered hole is formed below the low pressure relief hole, and the valve core is arranged in the tapered hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120039618.4U CN214404810U (en) | 2021-01-06 | 2021-01-06 | High-low pressure automatic flow-dividing one-way valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120039618.4U CN214404810U (en) | 2021-01-06 | 2021-01-06 | High-low pressure automatic flow-dividing one-way valve device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214404810U true CN214404810U (en) | 2021-10-15 |
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ID=78044536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120039618.4U Active CN214404810U (en) | 2021-01-06 | 2021-01-06 | High-low pressure automatic flow-dividing one-way valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214404810U (en) |
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2021
- 2021-01-06 CN CN202120039618.4U patent/CN214404810U/en active Active
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