CN221097571U - Load-holding one-way valve assembly with variable area pilot ratio - Google Patents
Load-holding one-way valve assembly with variable area pilot ratio Download PDFInfo
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- CN221097571U CN221097571U CN202322906499.XU CN202322906499U CN221097571U CN 221097571 U CN221097571 U CN 221097571U CN 202322906499 U CN202322906499 U CN 202322906499U CN 221097571 U CN221097571 U CN 221097571U
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- valve
- oil
- valve core
- variable area
- way valve
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- 238000007789 sealing Methods 0.000 claims abstract description 30
- 238000005381 potential energy Methods 0.000 claims abstract description 16
- 210000001503 joint Anatomy 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a load-holding one-way valve assembly with a variable area pilot ratio, which comprises a valve cover, a valve shell and a multi-way valve assembly which are assembled together, wherein the center of the valve cover is provided with a potential energy utilization oil port, and the multi-way valve assembly is provided with an oil inlet and a working oil port; the valve housing is internally provided with a valve sleeve in a sealing sliding manner, the multi-way valve is internally provided with a valve core in a sealing manner, the valve core and the valve sleeve are coaxially arranged, a plurality of radial oil holes which are the same as corresponding working oil holes are uniformly formed in the circumferential direction of the side wall of a concave ring at the lower end of the valve core, and the centers of the valve core and the valve sleeve are respectively provided with a central oil duct for communicating a potential energy utilization oil hole with the radial oil holes; the bottom of the valve core is provided with an oil inlet plugging conical surface. The load with the variable area pilot ratio is adopted to keep the one-way valve, so that the convenience of valve core assembly is improved, and the difficulty of valve core processing is reduced.
Description
Technical Field
The utility model belongs to the technical field of valves, and particularly relates to a load-holding one-way valve assembly with a variable area pilot ratio.
Background
In order to protect environment and save energy, a host manufacturer in the engineering machinery industry is performing research work on energy recycling of mechanical equipment, and a plurality of methods and principles for energy recycling, such as an oil-electricity hybrid power mode and an oil-liquid hybrid power mode, are proposed.
Existing load holding check valve trains with variable area pilot ratio, as shown in fig. 1, include: valve cover, O-shaped ring, valve shell, spring and valve core; the valve core of the hydraulic fluid valve works in a first working position for supplying oil to the energy accumulator (supplying oil to the potential energy utilization oil port) and a second working position for supplying oil to the working pump respectively according to the existence of pressure of the control oil port, so that energy is recovered and reused.
Above-mentioned valve allies oneself with structure, and the drawback that exists is: the valve core is of an integral structure and is slender, the coaxiality requirements are high when the valve core, the valve shell and the multi-way valve are assembled, the coaxiality is insufficient, the precise assembly of the valve core cannot be guaranteed, the sliding and sealing performance between the valve core and the valve shell cannot be guaranteed, the valve core is easy to clamp, the abrasion speed of the valve core is accelerated, the processing technology of the slender valve core is complex, the manufacturing cost is high, and the mass production is difficult.
Disclosure of utility model
Therefore, the utility model aims to provide the load-holding one-way valve assembly with the variable area pilot ratio, so that the convenience of valve element assembly is improved, and the difficulty of valve element processing is reduced.
The utility model solves the problems by the following technical means: the load-holding one-way valve assembly with the variable area pilot ratio comprises a valve cover, a valve shell and a multi-way valve assembly which are assembled together, wherein a potential energy utilization oil port is formed in the center of the valve cover, and an oil inlet and a working oil port are formed in the multi-way valve assembly; the valve housing is internally provided with a valve sleeve in a sealing sliding manner, the multi-way valve is internally provided with a valve core in a sealing manner, the valve core and the valve sleeve are coaxially arranged, a plurality of radial oil holes which are the same as corresponding working oil holes are uniformly formed in the circumferential direction of the side wall of a concave ring at the lower end of the valve core, and the centers of the valve core and the valve sleeve are respectively provided with a central oil duct for communicating a potential energy utilization oil hole with the radial oil holes; the bottom of the valve core is provided with an oil inlet plugging conical surface.
Further, a spring is coaxially sleeved at the joint of the valve sleeve and the valve core.
Further, a pilot oil port is formed in the side wall of the valve casing.
Further, the outer side wall of the valve sleeve is provided with an annular groove to form a pilot oil cavity.
Further, the butt joint assembly surface between the valve cover and the valve shell is sealed through a first sealing ring.
Further, the butt joint assembly surface between the valve housing and the multi-way valve assembly is sealed through a second sealing ring.
The utility model has the beneficial effects that:
The load retaining check valve with the variable area pilot ratio is connected with the valve through the split valve core structure, the load retaining check valve is composed of the valve sleeve and the valve core, the spring is coaxially assembled with the valve sleeve and the valve core, the coaxiality requirements of the valve core, the valve shell and the mounting hole are reduced, the guiding precision is improved, the sliding effect of the valve core in the inner hole of the valve shell and the sealing effect of the valve core at all positions are better, the whole processing technology of the valve core is simplified, the manufacturing cost is reduced, and the quality of batches is guaranteed. The spring can play a role in guiding and compacting the conical surface sealing surface SLc of the shutoff oil duct, reduces collision impact generated by the check valve and the valve cover in the opening process, prolongs the service life of the valve core, and can directly replace the valve core when the check valve leaks, thereby providing technical guarantee for installation and maintenance of the valve core.
Drawings
The utility model is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a prior art structure;
fig. 2 is a schematic structural view of a preferred embodiment of the present utility model.
Detailed Description
The utility model is further described in detail below by means of the figures and examples. The features and advantages of the present utility model will become more apparent from the description. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
As shown in fig. 2: the utility model relates to a load-holding one-way valve assembly with a variable area pilot ratio, which comprises a valve cover 1, a valve shell 3 and a multi-way valve assembly 8 which are assembled together, wherein a potential energy utilization oil port P3 is formed in the center of the valve cover 1, and an oil inlet P1 and a working oil port P2 are formed in the multi-way valve assembly 8; the valve casing 3 is internally provided with a valve sleeve 4 in a sealing sliding manner, the multi-way valve assembly 8 is internally provided with a valve core 7 in a sealing sliding manner, the valve core and the valve sleeve are coaxially arranged, a plurality of radial oil holes which are the same as the corresponding working oil holes P2 are uniformly formed in the circumferential direction of the side wall of a concave ring at the lower end of the valve core, and the centers of the valve core 7 and the valve sleeve 4 are respectively provided with a central oil duct for communicating the potential energy utilization oil hole P3 with the radial oil holes; the bottom of the valve core 7 is provided with an oil inlet plugging conical surface SLc. The butt joint of the valve sleeve and the valve core is coaxially sleeved and provided with a spring 5. And a pilot oil port X is formed in the side wall of the valve casing. The outer side wall of the valve sleeve 4 is provided with an annular groove to form a pilot oil cavity. The butt joint assembly surface between the valve cover 1 and the valve housing 3 is sealed by a first sealing ring 2. The butt joint assembly surface between the valve housing 3 and the multi-way valve assembly 8 is sealed by a second sealing ring 6.
The potential energy utilization oil port P3 can be communicated with the working oil port P2 through the central oil ducts of the valve sleeve 4 and the valve core 7; the groove surfaces at the upper ends of the valve housing 3 and the valve sleeve 4 form a pilot oil cavity SX; the valve core 7, the valve sleeve 4 and the spring 5 form a split valve core of the load holding one-way valve.
The valve cover 1 is fixedly connected to the valve casing 3 through the first sealing ring 2 in a sealing manner, the valve casing 3 is fixedly connected to the multi-way valve assembly 8 through the second sealing ring 6 in a sealing manner, an inner hole is formed in the valve casing 3, the valve sleeve 4 is arranged in the inner hole of the valve casing 3, and a convex ring on the outer side wall of the valve sleeve 4 is identical to the inner hole diameter of the valve casing 3 in diameter, and the convex ring and the valve casing 3 are connected in a sliding and sealing manner to form a first sliding sealing surface Sla.
The multi-way valve unit 8 is provided with a valve core mounting hole which is coaxial with the inner hole of the valve shell 3, the lower end of the valve core mounting hole of the multi-way valve unit 8 is coaxially provided with an oil inlet P1 communicated with the working pump, the diameter of the valve core 7 is the same as that of the valve core mounting hole, the two valve cores are in sliding sealing connection to form a second sliding sealing surface SLb, the valve core 7 is provided with two working positions, and in the first working position, a plugging conical surface at the bottom of the valve core 7 and the oil inlet P1 are sealed to form a conical surface sealing surface SLc for shutting off an oil duct, and at the moment, the oil inlet P1 at the lower end of the valve core 7 is not communicated with the working oil port P2 of the multi-way valve unit 8; in the second working position, the valve core 7 moves upward, so that the oil inlet P1 is communicated with the working oil port P2.
Operating state
(1) One-way valve is opened
When the pressure is built in an oil inlet P1 connected with the working pump, a conical surface sealing surface SLc of the shutoff oil duct receives thrust, and the stressed area of the cross section is S1; the pilot oil port X builds pressure, the valve sleeve 4 receives upward thrust after the pilot oil cavity SX is filled with oil, and the cross-section stressed area is S2; the pressure existing in the oil inlet P3 is utilized by potential energy, the partial area of the upper end surface of the valve sleeve 4 is subjected to downward pressure of the potential energy utilization oil inlet P3 by the conical surface sealing surface SLc of the shutoff oil duct, the cross-section stressed area is S3, when P1 and S1+X are met and S2 is more than P3, the sum of upward thrust generated by the oil inlet P1 and the pilot oil port X exceeds the downward thrust of the potential energy utilization oil port to the valve core, the valve core 7 and the valve sleeve 4 move upwards, the spring 5 is compressed, the oil inlet P1, the working oil port P2 and the potential energy utilization oil port P3 are communicated, when the valve sleeve 4 is displaced to a certain distance, the valve sleeve 4 is contacted with the valve cover 1 to be limited to be displaced, the spring 5 is prevented from being further compressed, and the one-way valve is smoothly opened at the moment.
(2) One-way valve is closed
When the pressure is not established in the oil inlet P1 connected with the working pump, the conical surface sealing surface SLc of the shutoff oil duct has no upward thrust; at the moment, the potential energy builds pressure by utilizing the oil port P3, a part of area of the upper end surface of the valve sleeve 4 and the conical surface sealing surface SLc of the shutoff oil duct are subjected to downward pressure, and the stressed area of the cross section is S3; the pilot oil port X does not build pressure and serves as an oil return port; at this time, the condition that P1+xS2 is less than P3.S3 is satisfied, the valve sleeve 3 and the valve core 7 are subjected to downward movement by the downward thrust generated by the potential energy utilization oil port P3, the spring 5 rebounds, the plugging conical surface at the bottom of the valve core 7 plugs the oil inlet, and the one-way valve is smoothly closed at the moment.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (6)
1. The load-holding one-way valve assembly with the variable area pilot ratio comprises a valve cover, a valve shell and a multi-way valve assembly which are assembled together, wherein a potential energy utilization oil port is formed in the center of the valve cover, and an oil inlet and a working oil port are formed in the multi-way valve assembly; the method is characterized in that: the valve housing is internally provided with a valve sleeve in a sealing sliding manner, the multi-way valve is internally provided with a valve core in a sealing manner, the valve core and the valve sleeve are coaxially arranged, a plurality of radial oil holes which are the same as corresponding working oil holes are uniformly formed in the circumferential direction of the side wall of a concave ring at the lower end of the valve core, and the centers of the valve core and the valve sleeve are respectively provided with a central oil duct for communicating a potential energy utilization oil hole with the radial oil holes; the bottom of the valve core is provided with an oil inlet plugging conical surface.
2. The load holding check valve train with variable area pilot ratio of claim 1, wherein: and a spring is coaxially sleeved at the joint of the valve sleeve and the valve core.
3. The load holding check valve train with variable area pilot ratio of claim 2, wherein: and the side wall of the valve casing is provided with a pilot oil port.
4. A load holding check valve train having a variable area pilot ratio as claimed in claim 3, wherein: the outer side wall of the valve sleeve forms a pilot oil cavity by being provided with an annular groove.
5. The load holding check valve train with variable area pilot ratio of claim 4, wherein: the butt joint assembly surface between the valve cover and the valve shell is sealed through a first sealing ring.
6. The load holding check valve train with variable area pilot ratio of claim 5, wherein: the butt joint assembly surface between the valve shell and the multi-way valve is sealed by a second sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322906499.XU CN221097571U (en) | 2023-10-27 | 2023-10-27 | Load-holding one-way valve assembly with variable area pilot ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322906499.XU CN221097571U (en) | 2023-10-27 | 2023-10-27 | Load-holding one-way valve assembly with variable area pilot ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221097571U true CN221097571U (en) | 2024-06-07 |
Family
ID=91327449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322906499.XU Active CN221097571U (en) | 2023-10-27 | 2023-10-27 | Load-holding one-way valve assembly with variable area pilot ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221097571U (en) |
-
2023
- 2023-10-27 CN CN202322906499.XU patent/CN221097571U/en active Active
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| GR01 | Patent grant |