CN220540002U - Priority valve and hydraulic system - Google Patents
Priority valve and hydraulic system Download PDFInfo
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- CN220540002U CN220540002U CN202321772274.3U CN202321772274U CN220540002U CN 220540002 U CN220540002 U CN 220540002U CN 202321772274 U CN202321772274 U CN 202321772274U CN 220540002 U CN220540002 U CN 220540002U
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- 230000001105 regulatory effect Effects 0.000 claims description 44
- 239000003921 oil Substances 0.000 description 31
- 230000009471 action Effects 0.000 description 6
- 239000010720 hydraulic oil Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
A pressure sequence valve and a hydraulic system relate to the technical field of hydraulic systems. The priority valve comprises a first reversing valve part, a second reversing valve part and a valve block main body; the valve block main body is provided with a first main body connector, a second main body connector, a first working connector, a second working connector, a third working connector and a fourth working connector; the first reversing valve part comprises a first reversing connecting port, a second reversing connecting port and a third reversing connecting port; the second reversing valve part comprises a fourth reversing connecting port, a fifth reversing connecting port and a sixth reversing connecting port; the second working connection port is communicated with the second main body connection port through a first one-way valve; the third working connection port is communicated with the first main body connection port through a second one-way valve. The hydraulic system includes a priority valve. The utility model provides a pressure sequence valve and a hydraulic system, which can reduce elements and pipelines when two execution elements are controlled to be started successively, so that the complexity of the structure of the hydraulic system is reduced to a certain extent.
Description
Technical Field
The utility model relates to the technical field of hydraulic systems, in particular to a pressure sequence valve and a hydraulic system.
Background
In a hydraulic system, a plurality of elements are usually arranged, and other elements and pipelines are additionally added to control the sequential starting of two execution elements, so that the hydraulic system is complex in structure, easy to break down and inconvenient to maintain.
Disclosure of Invention
The utility model aims to provide a pressure sequence valve and a hydraulic system, which can reduce elements and pipelines when two execution elements are controlled to be started successively, so that the structural complexity of the hydraulic system is reduced to a certain extent.
In order to achieve the above object, the present utility model provides the following technical solutions:
a pressure sequence valve comprises a first reversing valve part, a second reversing valve part and a valve block main body; the first reversing valve part and the second reversing valve part are respectively fixedly connected with the valve block main body;
the valve block main body is provided with a first main body connector, a second main body connector, a first working connector, a second working connector, a third working connector and a fourth working connector; the first main body connector and the second main body connector are used for connecting a hydraulic pipeline, the first working connector and the second working connector are used for connecting a first executing element, and the third working connector and the fourth working connector are used for connecting a second executing element;
the first reversing valve part comprises a first reversing connecting port, a second reversing connecting port and a third reversing connecting port; the first reversing valve portion is configured to reverse when the first reversing connection port reaches a first preset pressure, and is communicated with the third reversing connection port from the second reversing connection port to the second reversing connection port;
the second reversing valve part comprises a fourth reversing connecting port, a fifth reversing connecting port and a sixth reversing connecting port; the second reversing valve portion is configured to reverse when the fourth reversing connection port reaches a second preset pressure, and is switched from the fifth reversing connection port to the sixth reversing connection port to the fifth reversing connection port to the fourth reversing connection port;
the first main body connection port is respectively communicated with the first working connection port and the fourth reversing connection port, and the second main body connection port is respectively communicated with the fourth working connection port and the first reversing connection port; the second working connection port is communicated with the second reversing connection port; the third working connection port is communicated with the fifth reversing connection port;
the second work connection port is communicated with the second main body connection port through a first one-way valve, and the first one-way valve is configured to conduct the second main body connection port unidirectionally from the second work connection port; the third working connection port is in communication with the first body connection port through a second one-way valve, and the second one-way valve is configured to unidirectionally communicate with the first body connection port from the third working connection port.
In any of the above solutions, optionally, a first pressure adjusting device is connected to the valve block main body, and the first pressure adjusting device is configured to adjust the first preset pressure.
In any of the above solutions, optionally, a second pressure adjusting device is connected to the valve block main body, and the second pressure adjusting device is configured to adjust the second preset pressure.
In any of the above solutions, optionally, the first pressure adjusting device and/or the second pressure adjusting device adopts a pressure adjusting structure;
the pressure regulating structure comprises a pressure regulating nut and a pressure regulating elastic piece; the valve block main body is provided with a pressure regulating through hole for accommodating the pressure regulating elastic piece, the pressure regulating nut is in threaded connection with the valve block main body through the pressure regulating through hole, the pressure regulating nut is abutted to one end of the pressure regulating elastic piece, and the other end of the pressure regulating elastic piece is connected with the first reversing valve portion or the second reversing valve portion.
In any of the above solutions, optionally, the first pressure adjusting device and the second pressure adjusting device are disposed on two corresponding end surfaces of the valve block body.
In any of the above solutions, optionally, the first reversing valve portion and the second reversing valve portion are respectively disposed inside the valve block main body.
In any of the above solutions, optionally, the first body connection port and the second body connection port are located on a first end face of the valve block body;
the first working connection port and the third working connection port are positioned on the second end face of the valve block main body;
the second working connection port and the fourth working connection port are positioned on the third end face of the valve block main body;
the second end face and the third end face of the valve block main body are two corresponding end faces;
the second end face and the third end face of the valve block main body are respectively adjacent to the first end face.
In any of the above technical solutions, optionally, the first reversing valve portion is a two-position three-way reversing valve structure;
the second reversing valve part is of a two-position three-way reversing valve structure.
A hydraulic system includes a priority valve.
In any of the above solutions, optionally, the hydraulic system further includes a first actuator connected to the first working connection port and the second working connection port, and a second actuator connected to the third working connection port and the fourth working connection port;
the first executing element is a swinging cylinder or a hydraulic motor; the second actuator is a swing cylinder or a hydraulic motor.
The beneficial effects of the utility model are mainly as follows:
according to the pressure sequence valve and the hydraulic system, the first reversing valve part, the second reversing valve part, the first one-way valve and the second one-way valve are integrated on the valve block main body to form a whole; the first working connection port and the second working connection port are pressure sequence valves and are connected with an oil inlet and an oil return port of a hydraulic pipeline, the first working connection port and the second working connection port are pressure sequence valves and are connected with an oil inlet and an oil return port of a first execution element, the third working connection port and the fourth working connection port are pressure sequence valves and are connected with an oil inlet and an oil return port of a second execution element, and sequential starting of the first execution element and the second execution element is controlled by adjusting the sequence of the first body connection port and the second body connection port which are oil inlets and oil outlets of the pressure sequence valves; the pressure sequence valve is compact in structure, the first executing element and the second executing element are directly connected through the connecting ports on the valve block main body, other elements and pipelines are not required to be added, the structure of a hydraulic system is greatly simplified, the maintenance is convenient, and the fault rate caused by more pipelines is reduced to a certain extent.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic hydraulic diagram of a priority valve according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of a priority valve according to an embodiment of the present utility model;
FIG. 3 is a top view of the priority valve shown in FIG. 2;
FIG. 4 is a bottom view of the priority valve shown in FIG. 2;
FIG. 5 is a right side view of the priority valve shown in FIG. 2;
fig. 6 is a rear view of the priority valve shown in fig. 2.
Icon: 110-a first reversing valve portion; 120-a second reversing valve portion; 130-a valve block body; 131-a first work connection port; 132-a second work connection port; 133-a third work connection port; 134-fourth work connection port; 135-first body connection port; 136-a second body connection port; 140-a first one-way valve; 150-a second one-way valve; 160-a pressure regulating structure; 210-a first actuator; 220-a second actuator.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Examples
The embodiment provides a pressure sequence valve and a hydraulic system; referring to fig. 1-6, fig. 1 is a hydraulic schematic diagram of a priority valve according to the present embodiment; fig. 2 to 6 are schematic structural views of the priority valve according to the present embodiment, in which fig. 2 is a front view of the priority valve, fig. 3 is a top view of the priority valve shown in fig. 2, fig. 4 is a bottom view of the priority valve shown in fig. 2, fig. 5 is a right side view of the priority valve shown in fig. 2, and fig. 6 is a rear view of the priority valve shown in fig. 2.
The pressure sequence valve provided by the embodiment is used for a hydraulic system, for example, an agricultural machinery hydraulic system. Referring to fig. 1 to 6, the priority valve includes a first reversing valve portion 110, a second reversing valve portion 120, and a valve block body 130. Alternatively, the first and second reversing valve portions 110 and 120 are fixedly connected with the valve block body 130, respectively. Alternatively, the first and second reversing valve portions 110 and 120 are respectively disposed inside the valve block body 130.
The valve block main body 130 is provided with a first main body connection port 135, a second main body connection port 136, a first work connection port 131, a second work connection port 132, a third work connection port 133 and a fourth work connection port 134; the first and second body connection ports 135 and 136 are used to connect hydraulic lines, the first and second work connection ports 131 and 132 are used to connect the first actuator 210, and the third and fourth work connection ports 133 and 134 are used to connect the second actuator 220.
The first reversing valve portion 110 includes a first reversing connection port, a second reversing connection port, and a third reversing connection port; the first reversing valve portion 110 is configured to reverse when the first reversing connection port reaches a first preset pressure, and to switch from the second reversing connection port to communicate with the third reversing connection port to the second reversing connection port to communicate with the first reversing connection port. That is, in the initial state, the second reversing connection port of the first reversing valve portion 110 is communicated with the third reversing connection port, and the second reversing connection port is not communicated with the first reversing connection port; when the first reversing connection port reaches or exceeds the first preset pressure, the oil pressure at the first reversing connection port drives the first reversing valve portion 110 to reverse, and after the reversing, the second reversing connection port is communicated with the first reversing connection port, and the second reversing connection port is not communicated with the third reversing connection port. As shown in fig. 1, the first reversing connection port is shown by (1), (2) the second reversing connection port, and (3) the third reversing connection port.
The second reversing valve portion 120 includes a fourth reversing connection port, a fifth reversing connection port, and a sixth reversing connection port; the second reversing valve portion 120 is configured to reverse when the fourth reversing connection port reaches a second preset pressure, and to switch from the fifth reversing connection port to the sixth reversing connection port. That is, in the initial state, the fifth reversing connection port of the second reversing valve portion 120 is communicated with the sixth reversing connection port, and the fifth reversing connection port is not communicated with the fourth reversing connection port; when the fourth reversing connection port reaches or exceeds the second preset pressure, the oil pressure at the fourth reversing connection port drives the second reversing valve portion 120 to reverse, and after reversing, the fifth reversing connection port is communicated with the fourth reversing connection port, and the fifth reversing connection port is not communicated with the sixth reversing connection port. As shown in fig. 1, the fourth reversing connection port is shown by (4), (5) the fifth reversing connection port, and (6) the sixth reversing connection port.
The first main body connection port 135 is respectively communicated with the first working connection port 131 and the fourth reversing connection port, and the second main body connection port 136 is respectively communicated with the fourth working connection port 134 and the first reversing connection port; the second work connection port 132 communicates with the second reversing connection port; the third working connection port 133 communicates with the fifth reversing connection port.
The second work connection port 132 communicates with the second body connection port 136 through a first one-way valve 140, and the first one-way valve 140 is configured to unidirectionally communicate the second body connection port 136 from the second work connection port 132; the third working connection port 133 communicates with the first body connection port 135 through the second check valve 150, and the second check valve 150 is configured to unidirectionally communicate with the first body connection port 135 from the third working connection port 133.
Alternatively, the first reversing valve portion 110 is a two-position three-way reversing valve structure.
Alternatively, the second reversing valve portion 120 is a two-position three-way reversing valve structure.
In the sequential valve of the present embodiment, the first reversing valve portion 110, the second reversing valve portion 120, the first check valve 140, and the second check valve 150 are integrated on the valve block main body 130 to form a single body; the first main body connection port 135 and the second main body connection port 136 are oil inlet and oil return ports of a pressure sequence valve connected hydraulic pipeline, the first working connection port 131 and the second working connection port 132 are oil inlet and oil return ports of a pressure sequence valve connected first execution element 210, the third working connection port 133 and the fourth working connection port 134 are oil inlet and oil return ports of a pressure sequence valve connected second execution element 220, and sequential starting of the first execution element 210 and the second execution element 220 is controlled by adjusting the sequence of oil inlet and oil outlet of the pressure sequence valve of the first main body connection port 135 and the second main body connection port 136; the priority valve has compact structure, is directly connected with the first executing element 210 and the second executing element 220 through the connecting ports on the valve block main body 130, does not need to add other elements and pipelines, greatly simplifies the structure of a hydraulic system, is convenient to maintain, and reduces the failure rate caused by more pipelines to a certain extent.
The pressure sequence valve in the embodiment has the advantages of compact structure, stable operation and wide application, can reduce the cost of the whole hydraulic system to a certain extent, and has better practicability and popularization prospect. In an alternative to this embodiment, the priority valve has two operating states:
(1) The hydraulic oil of the hydraulic system enters the valve block main body 130 from the first main body connecting port 135, and because the fourth reversing connecting port of the second reversing valve portion 120 and the second one-way valve 150 are not communicated, the oil can only enter the first executing element 210 through the first working connecting port 131 until the action of the first executing element 210 is completed, the oil flows out of the first executing element 210 through the second working connecting port 132, the second reversing connecting port of the first reversing valve portion 110 is communicated with the third reversing connecting port, at the moment, the pressure of the third reversing connecting port is increased, the oil drives the first reversing valve portion 110 to be unable to reverse left, and the hydraulic oil flows back to the second main body connecting port 136 through the first one-way valve 140. Meanwhile, when the oil pressure at the fourth reversing connection port of the second reversing valve portion 120 increases until reaching the second preset pressure, the oil drives the second reversing valve portion 120 to reverse upwards (in the direction shown in fig. 1), the fifth reversing connection port is communicated with the fourth reversing connection port, the oil flows to the third working connection port 133 through the fifth reversing connection port to enter the second executing element 220, the oil flows to the second main body connection port 136 through the fourth working connection port 134 to enter the hydraulic system, and the sequential starting of the first executing element 210 and the second executing element 220 is completed. This state is when the first actuator 210 is first activated, and when the first actuator 210 is completed, the second actuator 220 is restarted.
(2) The hydraulic oil of the hydraulic system enters the valve block main body 130 from the second main body connection port 136, because the first reversing connection port of the first reversing valve portion 110 and the first one-way valve 140 are not communicated, the hydraulic oil enters the second actuating element 220 through the fourth working connection port 134 until the action of the second actuating element 220 is completed, the oil flows out of the second actuating element 220 through the third working connection port 133, the fifth reversing connection port of the second reversing valve portion 120 is communicated with the sixth reversing connection port, at the moment, the pressure of the sixth reversing connection port is increased, the oil drives the second reversing valve portion 120 to be unable to reverse upwards (the direction shown in fig. 1), and the hydraulic oil flows back to the first main body connection port 135 through the second one-way valve 150. Meanwhile, when the oil pressure at the first reversing connection port of the first reversing valve portion 110 increases until reaching a first preset pressure, the oil drives the first reversing valve portion 110 to reverse left (in the direction shown in fig. 1), the second reversing connection port is communicated with the first reversing connection port, the oil flows to the second working connection port 132 through the second reversing connection port to enter the first actuating element 210, the oil flows to the first main body connection port 135 through the first working connection port 131 to enter the hydraulic system, and the sequential starting of the second actuating element 220 and the first actuating element 210 is completed. This state is when the second actuator 220 is first activated, and when the second actuator 220 is completed, the first actuator 210 is restarted.
In an alternative of this embodiment, the valve block body 130 has a first pressure adjusting device connected thereto, the first pressure adjusting device being configured to adjust a first preset pressure of the first reversing valve portion 110. The first pressure adjusting device can adjust the first preset pressure of the first reversing valve 110, so as to adjust the time interval for restarting the first actuator 210 when the action of the second actuator 220 is completed.
In an alternative of this embodiment, a second pressure adjusting device is connected to the valve block main body 130, and the second pressure adjusting device is configured to adjust a second preset pressure of the second reversing valve portion 120. The second preset pressure of the second reversing valve portion 120 can be adjusted by the second pressure adjusting device, so as to adjust the time interval for restarting the second actuator 220 when the action of the first actuator 210 is completed.
Referring to fig. 1-6, in an alternative to this embodiment, the first pressure regulating device and/or the second pressure regulating device employ a pressure regulating structure 160; that is, the first pressure adjusting device adopts the pressure adjusting structure 160, or the second pressure adjusting device adopts the pressure adjusting structure 160, or both the first pressure adjusting device and the second pressure adjusting device adopt the pressure adjusting structure 160.
Optionally, the pressure regulating structure 160 includes a pressure regulating nut and a pressure regulating elastic member; the valve block main body 130 is provided with a pressure regulating through hole for accommodating the pressure regulating elastic piece, the pressure regulating nut is in threaded connection with the valve block main body 130 through the pressure regulating through hole, the pressure regulating nut is abutted against one end of the pressure regulating elastic piece, and the other end of the pressure regulating elastic piece is connected with the first reversing valve portion 110 or the second reversing valve portion 120. By screwing the pressure regulating nut, the first preset pressure of the first reversing valve portion 110 is regulated, and the starting time of the first actuator 210 relative to the second actuator 220 when the action of the second actuator 220 is completed is controlled. Or, by screwing the pressure adjusting nut, the second preset pressure of the second reversing valve portion 120 is adjusted, so as to control the starting time of the second actuator 220 relative to the first actuator 210 when the action of the first actuator 210 is completed.
Optionally, the pressure regulating resilient member is a spring or other resilient structure.
Referring to fig. 5 and 6, in an alternative of the present embodiment, a first pressure adjusting device and a second pressure adjusting device are provided on the corresponding two end surfaces of the valve block main body 130.
Referring to fig. 1-6, in an alternative version of this embodiment, the first body connection port 135 and the second body connection port 136 are located at a first end of the valve block body 130.
The first work connection port 131 and the third work connection port 133 are located at the second end surface of the valve block body 130.
The second and fourth work connection ports 132 and 134 are located at a third end face of the valve block body 130.
Alternatively, the second end surface and the third end surface of the valve block main body 130 are two end surfaces corresponding to each other.
Optionally, the second end face and the third end face of the valve block body 130 are respectively adjacent to the first end face. For example, the second end surface of the valve block body 130 is a top surface shown in fig. 3, the third end surface is a bottom surface shown in fig. 4, and the first end surface is a side surface shown in fig. 5.
The pressure sequence valve in the embodiment has the following advantages:
1. the pressure sequence valve has smaller volume, is convenient to install, can reduce the use of other control elements, and simplifies the arrangement of a hydraulic system.
2. The sequential start of the executive component is realized by the pressure sequence valve, the working response speed is higher, and the sensitivity is higher.
3. The pressure sequence valve has the advantages of simple and compact structure, stable operation and lower failure rate.
4. The pressure sequence valve is convenient to operate, and the pressure can be independently regulated through the first pressure regulating device and the second pressure regulating device so as to control the time difference of starting the executing element.
5. The pressure regulating range of the pressure sequence valve is wide, stepless regulation of pressure can be realized within a certain range, and the application range of the sequence valve is greatly improved.
The embodiment also provides a hydraulic system comprising the priority valve according to any of the embodiments. The hydraulic system adopts the pressure sequence valve, and the first executing element 210 and the second executing element 220 can be directly connected through the connecting port on the valve block main body 130 of the pressure sequence valve, so that other elements and pipelines are not required to be added, the structure of the hydraulic system is greatly simplified, the maintenance is convenient, and the failure rate caused by more pipelines is reduced to a certain extent.
Referring to fig. 1, in an alternative of the present embodiment, the hydraulic system further includes a first actuator 210 connected to the first work connection port 131 and the second work connection port 132, and a second actuator 220 connected to the third work connection port 133 and the fourth work connection port 134.
Alternatively, the first actuator 210 is a swing cylinder or hydraulic motor, or other element.
Alternatively, the second actuator 220 is a swing cylinder or hydraulic motor, or other element.
The hydraulic system provided in this embodiment includes the above-mentioned priority valve, and the technical features of the above-mentioned disclosed priority valve are also applicable to the hydraulic system, and the technical features of the above-mentioned disclosed priority valve are not repeated. The hydraulic system in this embodiment has the advantages of the above-described priority valve, and the advantages of the above-disclosed priority valve are not repeated here.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The pressure sequence valve is characterized by comprising a first reversing valve part, a second reversing valve part and a valve block main body; the first reversing valve part and the second reversing valve part are respectively fixedly connected with the valve block main body;
the valve block main body is provided with a first main body connector, a second main body connector, a first working connector, a second working connector, a third working connector and a fourth working connector; the first main body connector and the second main body connector are used for connecting a hydraulic pipeline, the first working connector and the second working connector are used for connecting a first executing element, and the third working connector and the fourth working connector are used for connecting a second executing element;
the first reversing valve part comprises a first reversing connecting port, a second reversing connecting port and a third reversing connecting port; the first reversing valve portion is configured to reverse when the first reversing connection port reaches a first preset pressure, and is communicated with the third reversing connection port from the second reversing connection port to the second reversing connection port;
the second reversing valve part comprises a fourth reversing connecting port, a fifth reversing connecting port and a sixth reversing connecting port; the second reversing valve portion is configured to reverse when the fourth reversing connection port reaches a second preset pressure, and is switched from the fifth reversing connection port to the sixth reversing connection port to the fifth reversing connection port to the fourth reversing connection port;
the first main body connection port is respectively communicated with the first working connection port and the fourth reversing connection port, and the second main body connection port is respectively communicated with the fourth working connection port and the first reversing connection port; the second working connection port is communicated with the second reversing connection port; the third working connection port is communicated with the fifth reversing connection port;
the second work connection port is communicated with the second main body connection port through a first one-way valve, and the first one-way valve is configured to conduct the second main body connection port unidirectionally from the second work connection port; the third working connection port is in communication with the first body connection port through a second one-way valve, and the second one-way valve is configured to unidirectionally communicate with the first body connection port from the third working connection port.
2. The priority valve of claim 1, wherein a first pressure adjustment device is coupled to the valve block body, the first pressure adjustment device configured to adjust the first preset pressure.
3. The priority valve of claim 2, wherein a second pressure adjustment device is coupled to the valve block body, the second pressure adjustment device configured to adjust the second predetermined pressure.
4. A priority valve as recited in claim 3, wherein the first and/or second pressure regulating devices employ a pressure regulating structure;
the pressure regulating structure comprises a pressure regulating nut and a pressure regulating elastic piece; the valve block main body is provided with a pressure regulating through hole for accommodating the pressure regulating elastic piece, the pressure regulating nut is in threaded connection with the valve block main body through the pressure regulating through hole, the pressure regulating nut is abutted to one end of the pressure regulating elastic piece, and the other end of the pressure regulating elastic piece is connected with the first reversing valve portion or the second reversing valve portion.
5. A priority valve as recited in claim 3 wherein the first and second pressure regulating devices are disposed on corresponding two end faces of the valve block body.
6. The priority valve of claim 1, wherein the first reversing valve portion and the second reversing valve portion are each disposed within the valve block body.
7. The priority valve of claim 1, wherein the first body connection port and the second body connection port are located at a first end face of the valve block body;
the first working connection port and the third working connection port are positioned on the second end face of the valve block main body;
the second working connection port and the fourth working connection port are positioned on the third end face of the valve block main body;
the second end face and the third end face of the valve block main body are two corresponding end faces;
the second end face and the third end face of the valve block main body are respectively adjacent to the first end face.
8. The priority valve of claim 1, wherein the first reversing valve portion is a two-position three-way reversing valve structure;
the second reversing valve part is of a two-position three-way reversing valve structure.
9. A hydraulic system comprising a priority valve as claimed in any one of claims 1 to 8.
10. The hydraulic system of claim 9, further comprising a first actuator coupled to the first work connection port and the second work connection port, and a second actuator coupled to the third work connection port and the fourth work connection port;
the first executing element is a swinging cylinder or a hydraulic motor; the second actuator is a swing cylinder or a hydraulic motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321772274.3U CN220540002U (en) | 2023-07-06 | 2023-07-06 | Priority valve and hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321772274.3U CN220540002U (en) | 2023-07-06 | 2023-07-06 | Priority valve and hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220540002U true CN220540002U (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321772274.3U Active CN220540002U (en) | 2023-07-06 | 2023-07-06 | Priority valve and hydraulic system |
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| Country | Link |
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| CN (1) | CN220540002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117905738A (en) * | 2023-07-06 | 2024-04-19 | 新疆新研牧神科技有限公司 | Sequential starting hydraulic system and harvester |
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2023
- 2023-07-06 CN CN202321772274.3U patent/CN220540002U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117905738A (en) * | 2023-07-06 | 2024-04-19 | 新疆新研牧神科技有限公司 | Sequential starting hydraulic system and harvester |
| CN117905738B (en) * | 2023-07-06 | 2024-08-23 | 新疆新研牧神科技有限公司 | Sequential starting hydraulic system and harvester |
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