CN117869634A - One-way valve suitable for strong volatile oil liquid - Google Patents
One-way valve suitable for strong volatile oil liquid Download PDFInfo
- Publication number
- CN117869634A CN117869634A CN202410158924.8A CN202410158924A CN117869634A CN 117869634 A CN117869634 A CN 117869634A CN 202410158924 A CN202410158924 A CN 202410158924A CN 117869634 A CN117869634 A CN 117869634A
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- valve
- oil
- valve seat
- cavity
- seat
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- 239000007788 liquid Substances 0.000 title claims abstract description 25
- 239000000341 volatile oil Substances 0.000 title claims description 7
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 239000003921 oil Substances 0.000 claims description 147
- 238000004891 communication Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims 1
- 230000006872 improvement Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Check Valves (AREA)
Abstract
The invention discloses a one-way valve suitable for high-volatility oil liquid, relates to the technical field of one-way valves, and is mainly used for solving the problem that a dead cavity is easy to appear when the existing one-way valve works in a high-temperature-difference hydraulic system taking the high-volatility oil liquid as a working medium. The main structure is as follows: the valve comprises a valve body, wherein an oil inlet channel, a valve cavity and an oil outlet channel are sequentially arranged in the valve body, a valve seat is arranged in the valve cavity, a valve seat reset spring is arranged on the oil outlet side of the valve seat, a valve core is arranged in the oil outlet channel, the outer wall of the oil inlet side of the valve core is in conical surface sealing fit with the inner wall of the oil outlet channel, and a valve core reset spring is arranged at the oil inlet end of the valve core. The invention provides a one-way valve suitable for high-volatility oil liquid, which can effectively ensure the performance of the one-way valve when the one-way valve works in a high-temperature-difference hydraulic system taking the high-volatility oil liquid as a working medium.
Description
Technical Field
The invention relates to the technical field of one-way valves, in particular to a one-way valve suitable for high-volatility oil liquid.
Background
The check valve is one of the directional control valves of the hydraulic system and mainly used for limiting the flow of oil to one direction only and not to the opposite direction. Although the check valve structure and the working principle are relatively simple, the check valve is one of the most used elements in the hydraulic system. Therefore, the check valve can be correctly and reasonably designed to meet the functional requirements of different application occasions of the hydraulic system, and the system cost is reduced.
When the existing check valve works in a high temperature difference hydraulic system with high-volatility oil liquid as a working medium, a 'dead space' is easy to appear between opening and closing of the valve, the high-volatility medium left in the valve cavity volatilizes in the valve cavity under the high-temperature effect, and the pressure in the valve cavity is improved, so that the force required for opening the check valve is increased, and even the leakage or the failure that the check valve cannot be opened in time is caused. Therefore, in order to ensure the working performance of the check valve in a high temperature difference hydraulic system using a high-volatility oil liquid as a working medium, a new check valve is urgently needed at present.
Disclosure of Invention
The invention aims to provide a one-way valve suitable for high-volatility oil liquid, which can effectively ensure the performance of the one-way valve when the one-way valve works in a high-temperature-difference hydraulic system taking the high-volatility oil liquid as a working medium.
The technical scheme for solving the technical problems is as follows: the utility model provides a check valve suitable for strong volatile oil liquid, includes the valve main part, coaxial intercommunication in proper order is equipped with oil feed passageway, valve pocket and play oil channel in the valve main part, be equipped with the disk seat that can follow its axial reciprocating motion in the valve pocket, the play oil side of disk seat is equipped with the disk seat reset spring that can drive its closed oil feed passageway, be equipped with the case that can follow its axial reciprocating motion in the play oil channel, be conical surface sealing fit between the oil feed side outer wall of case and the play oil channel inner wall, and be equipped with the case reset spring that can drive its closed oil channel on the oil feed end of case, the disk seat reset spring is greater than the drive force of case reset spring to the disk seat to the drive force of case.
As a further improvement of the invention, the valve seat comprises an upper valve seat and a lower valve seat which are coaxially and sequentially arranged along the oil conveying direction and fixedly connected through a plurality of screws, a plurality of first oil through grooves are arranged on the outer side wall of the upper valve seat, the oil inlet side end face of the upper valve seat is in sealing fit with the end face of the outlet end of the oil inlet channel, and a plurality of second oil through grooves are arranged on the outer side wall of the lower valve seat.
As a further improvement of the invention, the end face of the oil inlet side of the upper valve seat is provided with a circular stepped groove, the side wall of the circular stepped groove is provided with a plurality of air holes communicated with the valve cavity, and the circular stepped groove is internally provided with sealing rubber material in sealing fit with the end face of the outlet end of the oil inlet channel.
As a further improvement of the invention, a valve seat cavity is arranged in the lower valve seat, a plurality of oil through holes communicated with the valve cavity are arranged on the side wall of the valve seat cavity, the oil inlet end of the valve core movably penetrates through the lower valve seat to extend into the valve seat cavity, the end face of the oil inlet end of the valve core is in threaded connection with an adjusting screw, the valve core reset spring is sleeved on the valve core between the adjusting screw and the inner wall of the valve seat cavity, and the two ends of the valve core reset spring are respectively in tight contact with the adjusting screw and the inner wall of the valve seat cavity.
As a further improvement of the invention, the valve seat return spring is arranged between the lower valve seat and the inner wall of the valve cavity, and two ends of the valve seat return spring are respectively in tight contact with the lower valve seat and the inner wall of the valve cavity.
As a further improvement of the invention, the valve body comprises an upper shell and a valve body which are coaxially and sequentially connected, the oil inlet channel is arranged at the axle center of the upper shell, the valve cavity and the oil outlet channel are sequentially arranged at the axle center of the valve body, a sealing groove which is arranged around the axle center of the upper shell is arranged on the connecting surface of the upper shell and the valve body, and a sealing ring is arranged in the sealing groove.
As a further improvement of the invention, the upper shell is provided with a avoiding groove which is arranged around the outlet end of the oil inlet channel on the contact sealing surface of the upper shell and the valve seat.
As a further improvement of the invention, the valve cavity is communicated with the oil outlet channel through a communication oil channel, and a plurality of third oil through grooves are arranged on the inner wall of the communication oil channel.
As a further improvement of the invention, the valve core is provided with a sealing ring on the conical surface sealing matching surface with the oil outlet channel, and the sealing ring is arranged around the axle center of the valve core.
As a further improvement of the invention, a valve core oil passage is arranged on the outer wall of the oil outlet side of the valve core.
Advantageous effects
Compared with the prior art, the one-way valve suitable for the high-volatility oil liquid has the advantages that:
1. because the valve core is driven by the valve core return spring to close the inlet of the oil outlet channel, when the pressure in the check valve is increased and the working condition of 'dead space' appears, the pressure in the 'dead space' is larger than the driving force of the valve core return spring, the valve core can be independently opened, so that the pressure in the 'dead space' can be released through the oil outlet channel, and the opening performance of the check valve in the working process of a high-temperature-difference hydraulic system taking strong volatile oil as a working medium can be effectively ensured.
2. In the one-way valve, besides a valve seat which is used for closing an outlet of an oil inlet channel and can be opened under the pushing of oil, a valve core which is in conical surface sealing fit between the outer wall of the oil inlet side and the inner wall of the oil outlet channel and can axially reciprocate along the oil outlet channel is also arranged in the oil outlet channel. Therefore, the one-way valve has a double-sealing structure and has stronger sealing performance. Meanwhile, because the driving force of the valve seat return spring to the valve seat is larger than the driving force of the valve core return spring to the valve core, when the oil pressure in the oil inlet channel can push the valve seat, the valve core can be naturally pushed open, so that the one-way valve achieves the linkage double-valve-core structure form of a valve in the valve, and the one-way valve has the advantages of compact structure, light weight, large flow, high response speed and sensitivity to the change of the internal and external pressure of the one-way valve.
The invention will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a perspective view of the present invention in use;
FIG. 3 is a front view of the oil outlet passage end of the present invention
FIG. 4 is a front view of the oil inlet passage side of the valve body of the present invention;
fig. 5 is a perspective view of the valve seat and valve element of the present invention.
Wherein: 1-an upper housing; 11-sealing the groove; 12-sealing rings; 13-avoiding grooves; 14-an oil inlet passage; 2-a valve body; 21-a valve cavity; 22-an oil outlet channel; 23-a third oil groove; 3-upper valve seat; 31-circular stepped grooves; 32-a sealing compound; 33-ventilation holes; 34-a first oil passing groove; 4-a lower valve seat; 41-an oil through hole; 42-valve seat cavity; 43-a second oil drain groove; 44-valve seat return spring; 5-valve core; 51-adjusting the screw; 52-a spool return spring; 53-sealing ring; 54-valve core oil duct.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical solutions and advantages of the present invention more apparent. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; of course, it may be mechanically or electrically connected; in addition, the connection may be direct, indirect via an intermediate medium, or communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Embodiments of the present invention will now be described with reference to the accompanying drawings.
Examples
The specific embodiment of the invention is shown in figures 1-5, and the one-way valve suitable for the high-volatility oil liquid comprises a valve body with a columnar structure. The valve main body is internally and coaxially provided with an oil inlet channel 14, a valve cavity 21 and an oil outlet channel 22 which are communicated in sequence along the axial direction. The valve cavity 21 is provided with a valve seat capable of axially reciprocating, and the outer side wall of the valve seat is provided with an oil through groove for conveying oil from the oil inlet side of the valve seat to the oil outlet side of the valve seat. And, the valve cavity 21 is communicated with the oil outlet channel 22 through a communication oil channel, and a plurality of third oil through grooves 23 are arranged on the inner wall of the communication oil channel. In order to enable the valve seat to close the oil inlet passage 14 in the closed state, the oil outlet side of the valve seat is provided with a valve seat return spring 44 which can drive the valve seat to close the oil inlet passage 14. In this embodiment, the valve seat is in sealing engagement with the oil passage 14.
Meanwhile, in order to solve the problem of "dead space", the check valve is provided with a valve element 5 reciprocally movable in the axial direction thereof in the oil outlet passage 22. The outer wall of the oil inlet side of the valve core 5 is in conical surface sealing fit with the inner wall of the oil outlet channel 22, and the oil inlet end of the valve core 5 is provided with a valve core reset spring 52 which can drive the valve core to seal the oil outlet channel 22. In the present embodiment, the driving force of the valve seat return spring 44 to the valve seat is larger than the driving force of the spool return spring 52 to the spool 5.
Besides a valve seat which is used for closing the outlet of the oil inlet channel 14 and can be opened under the pushing of oil, the check valve is also internally provided with a valve core 5 which is in conical surface sealing fit between the outer wall of the oil inlet side and the inner wall of the oil outlet channel 22 and can axially reciprocate along the oil outlet channel 22. Therefore, the one-way valve has a double-sealing structure and has stronger sealing performance. Meanwhile, because the driving force of the valve seat return spring 44 to the valve seat is larger than the driving force of the valve core return spring 52 to the valve core 5, when the oil pressure in the oil inlet channel 14 can push the valve seat, the valve core 5 can be naturally pushed open easily, so that the check valve achieves a linkage double-valve-core structure of a valve in the valve, has compact structure, light weight, large flow and quick response speed, and is sensitive to the change of the internal and external pressure of the check valve.
The one-way valve comprises an opening working process and a closing working process when in use. During the opening process of the one-way valve, the pressure oil in the oil inlet channel 14 overcomes the resultant force of the valve seat return spring 44 and the valve core return spring 52 under the action of hydraulic pressure, firstly pushes the valve seat to enable the pressure oil to enter the valve cavity 21 of the valve main body, then pushes the valve core 5 under the action of hydraulic pressure and overcomes the spring force of the valve core return spring 52, and the one-way valve is opened; during the closing process of the check valve, the hydraulic pressure of the pressure oil in the oil inlet channel 14 decreases, and the valve seat is reset to close the oil inlet channel 14 as the hydraulic pressure continues to decrease, because the driving force of the valve seat reset spring 44 to the valve seat is greater than the driving force of the valve core reset spring 52 to the valve core 5, the valve core 5 is closed first.
In the check valve, since the valve core 5 is driven by the valve core return spring 52 to close the inlet of the oil outlet channel 22, when the pressure in the check valve is increased and the working condition of 'dead space' appears, the pressure in the 'dead space' is larger than the driving force of the valve core return spring 52, the 'dead space' can be independently opened by the valve core 5, so that the pressure of the 'dead space' can be released through the oil outlet channel 22, and the opening performance of the check valve in a high temperature difference hydraulic system with strong volatile oil as a working medium can be effectively ensured.
With respect to the specific structure of the valve seat, the valve seat includes an upper valve seat 3 and a lower valve seat 4 coaxially and sequentially disposed in the oil conveying direction and fixedly connected by a plurality of screws. Wherein, the upper valve seat 3 is provided with a round boss for positioning the lower valve seat 4 on the connecting surface with the lower valve seat 4. The outer side wall of the upper valve seat 3 is provided with a plurality of first oil through grooves 34, and the outer side wall of the lower valve seat 4 is provided with a plurality of second oil through grooves 43. The first oil drain groove 34 and the second oil drain groove 43 together form an oil drain groove of the valve seat. The oil inlet side end surface of the upper valve seat 3 is in sealing fit with the outlet end surface of the oil inlet channel 14. Specific: the end face of the oil inlet side of the upper valve seat 3 is provided with a circular stepped groove 31, and the side wall of the circular stepped groove 31 is provided with a plurality of air holes 33 communicated with the valve cavity 21. The circular stepped groove 31 is also internally provided with a sealing rubber material 32 which is in sealing fit with the end face of the outlet end of the oil inlet channel 14 so as to form a sealing face for axial sealing of the end face.
With respect to the specific structure of the lower valve seat 3, a valve seat cavity 42 is provided in the lower valve seat 3, and a plurality of oil holes 41 communicating with the valve cavity 21 are provided on the sidewall of the valve seat cavity 42. The oil inlet end of the valve core 5 movably passes through the lower valve seat 3 and extends into the valve seat cavity 42, and the oil inlet end surface of the valve core 5 is in threaded connection with an adjusting screw 51. The valve core reset spring 52 is sleeved on the valve core 5 between the adjusting screw 51 and the inner wall of the valve seat cavity 42, and two ends of the valve core reset spring 52 are respectively in tight contact with the adjusting screw 51 and the inner wall of the valve seat cavity 42. The pre-pressure of the spool return spring 52 can be adjusted by the adjusting screw 51. Correspondingly, the valve seat return spring 44 in the embodiment is arranged between the lower valve seat 3 and the inner wall of the valve cavity 21, and two ends of the valve seat return spring 44 are respectively in tight contact with the lower valve seat 3 and the inner wall of the valve cavity 21.
Regarding the specific structure of the valve body, the valve body comprises an upper shell 1 and a valve body 2 which are coaxially and sequentially connected, an oil inlet channel 14 is arranged at the axle center of the upper shell 1, and a valve cavity 21 and an oil outlet channel 22 are sequentially arranged at the axle center of the valve body 2. The upper housing 1 is provided with a seal groove 11 arranged around the axis of the upper housing 1 on the connection surface with the valve body 2, and a seal ring 12 is installed in the seal groove 11. The sealing groove 11 and the inner cavity wall of the valve body 2 squeeze the sealing ring 12 to ensure the tightness of the connection. In this embodiment, the upper housing 1 is provided with a relief groove 13 provided around the outlet end of the oil inlet passage 14 on the contact sealing surface with the valve seat.
In order to realize the sealing fit between the valve core 5 and the oil outlet passage 22, the valve core 5 is provided with a sealing ring 53 on the conical surface sealing fit surface with the oil outlet passage 22. The seal ring 53 is disposed around the axial center of the spool 5. Meanwhile, a spool oil passage 54 is provided on the outer wall of the oil outlet side of the spool 5.
The invention has been described in connection with the preferred embodiments, but the invention is not limited to the embodiments disclosed above, but it is intended to cover various modifications, equivalent combinations according to the essence of the invention.
Claims (10)
1. The utility model provides a check valve suitable for strong volatile oil liquid, includes the valve main part, coaxial intercommunication in proper order is equipped with oil feed passageway (14), valve pocket (21) and play oil passageway (22) in the valve main part, be equipped with in valve pocket (21) and follow its axial reciprocating motion's disk seat, the play oil side of disk seat is equipped with disk seat reset spring (44) that can drive its sealed oil feed passageway (14), a serial communication port, be equipped with in play oil passageway (22) and follow its axial reciprocating motion's case (5), be conical surface sealing fit between the oil feed side outer wall of case (5) and the oil passageway (22) inner wall, and be equipped with case reset spring (52) that can drive its sealed oil passageway (22) on the oil feed end of case (5), the drive force of disk seat reset spring (44) is greater than the drive force of case reset spring (52) to case (5).
2. The one-way valve suitable for high-volatility oil liquid according to claim 1, wherein the valve seat comprises an upper valve seat (3) and a lower valve seat (4) which are coaxially and sequentially arranged along the oil liquid conveying direction and fixedly connected through a plurality of screws, a plurality of first oil through grooves (34) are arranged on the outer side wall of the upper valve seat (3), the oil inlet side end face of the upper valve seat (3) is in sealing fit with the outlet end face of the oil inlet channel (14), and a plurality of second oil through grooves (43) are arranged on the outer side wall of the lower valve seat (4).
3. The one-way valve for the high-volatility oil liquid of claim 2, wherein a circular stepped groove (31) is arranged on the end face of the oil inlet side of the upper valve seat (3), a plurality of air holes (33) communicated with the valve cavity (21) are formed in the side wall of the circular stepped groove (31), and a sealing sizing material (32) in sealing fit with the end face of the outlet end of the oil inlet channel (14) is further arranged in the circular stepped groove (31).
4. A one-way valve for high-volatility oil liquid according to claim 2 or 3, wherein a valve seat cavity (42) is arranged in the lower valve seat (3), a plurality of oil through holes (41) communicated with the valve cavity (21) are formed in the side wall of the valve seat cavity (42), the oil inlet end of the valve core (5) movably penetrates through the lower valve seat (3) to extend into the valve seat cavity (42) and the oil inlet end face of the valve core (5) is in threaded connection with an adjusting screw (51), the valve core return spring (52) is sleeved on the valve core (5) between the adjusting screw (51) and the inner wall of the valve seat cavity (42), and two ends of the valve core return spring (52) are respectively in tight contact with the adjusting screw (51) and the inner wall of the valve seat cavity (42).
5. The one-way valve for high-volatility oil liquid of claim 4, wherein the valve seat return spring (44) is disposed between the lower valve seat (3) and the inner wall of the valve cavity (21), and two ends of the valve seat return spring (44) are respectively in contact with the lower valve seat (3) and the inner wall of the valve cavity (21).
6. The one-way valve suitable for high-volatility oil liquid of claim 1, wherein the valve body comprises an upper shell (1) and a valve body (2) which are coaxially and sequentially connected, the oil inlet channel (14) is arranged at the axle center of the upper shell (1), the valve cavity (21) and the oil outlet channel (22) are sequentially arranged at the axle center of the valve body (2), the upper shell (1) is provided with a sealing groove (11) which is arranged around the axle center of the upper shell (1) on a connecting surface with the valve body (2), and a sealing ring (12) is arranged in the sealing groove (11).
7. A non-return valve for a highly volatile oil liquid according to claim 6, characterized in that the upper housing (1) is provided with a relief groove (13) provided around the outlet end of the oil inlet channel (14) on the contact sealing surface with the valve seat.
8. The one-way valve for the high-volatility oil liquid of claim 1, wherein the valve cavity (21) is communicated with the oil outlet channel (22) through a communication oil channel, and a plurality of third oil through grooves (23) are arranged on the inner wall of the communication oil channel.
9. The one-way valve for high-volatility oil liquid of claim 1, wherein the valve core (5) is provided with a sealing ring (53) on a conical surface sealing matching surface with the oil outlet channel (22), and the sealing ring (53) is arranged around the axis of the valve core (5).
10. The one-way valve for high-volatility oil liquid of claim 1, wherein a valve core oil passage (54) is provided on the outer wall of the oil outlet side of the valve core (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410158924.8A CN117869634A (en) | 2024-02-04 | 2024-02-04 | One-way valve suitable for strong volatile oil liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410158924.8A CN117869634A (en) | 2024-02-04 | 2024-02-04 | One-way valve suitable for strong volatile oil liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117869634A true CN117869634A (en) | 2024-04-12 |
Family
ID=90577483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410158924.8A Pending CN117869634A (en) | 2024-02-04 | 2024-02-04 | One-way valve suitable for strong volatile oil liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117869634A (en) |
-
2024
- 2024-02-04 CN CN202410158924.8A patent/CN117869634A/en active Pending
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