Linear sealing valve group

Abstract

The invention discloses a linear sealing valve group which comprises a valve body and at least one group of valve elements, the valve body is provided with at least one group of valve cavities, at least one working channel, an oil inlet channel and an oil outlet channel, each working channel is provided with two connectors, the oil inlet channel is provided with at least one oil inlet, and the oil outlet channel is provided with at least one oil outlet. The oil outlet channel is provided with at least one oil outlet, the valve body forms an abutting structure in each valve cavity, each abutting structure is provided with an abutting wall, the valve element is provided with a connecting wall, a section is formed in the moving direction of the valve element, and section lines on the same sides of the abutting walls and the connecting walls extend and intersect. The section size of the portion, forming the connecting wall, of the valve element and the section size of the portion, forming the abutting wall, of the abutting structure are randomly gradually changed in the moving direction of the valve element, and the valve element abuts against the abutting wall in the mode that the connecting wall makes line contact with the abutting wall. The sealing performance is better, and the response is faster.

Description

Technical Field

[0001] This application relates to the field of valve technology, and more particularly to valve assemblies with line seals. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters of the conveyed medium. They are commonly used in various industries. Currently, most valves adopt a slide valve structure, achieving sealing through surface contact.

[0003] In this type of valve, a spool valve slides within a valve cavity, which connects to an inlet or outlet channel and a working channel. An abutment wall is formed between the interfaces of the inlet or outlet channel and the working channel, respectively. A convex wall and a groove are formed on the periphery of the spool valve. When the groove of the spool valve corresponds to either interface and the convex wall abuts against the abutment wall, the inlet or outlet channel and the working channel are blocked. When the convex wall of the spool valve is misaligned with the abutment wall and the groove simultaneously corresponds to both interfaces, the inlet or outlet channel and the working channel are connected.

[0004] During this process, because the spool valve seals itself by contacting the convex wall with the abutting wall, hydraulic oil may leak out from the gap between them, posing a relatively high risk of leakage. Furthermore, the spool valve is required to move a predetermined distance to achieve flow direction switching, resulting in a relatively slow response time. Summary of the Invention

[0005] To address the aforementioned technical problems and achieve at least one advantage of this application, this application provides a line-sealed valve assembly, the line-sealed valve assembly comprising:

[0006] The valve body has at least one set of valve chambers, at least one working channel, an oil inlet channel, and an oil outlet channel. Each working channel has two interfaces. The oil inlet channel has at least one oil inlet, and the oil outlet channel has at least one oil outlet. Two valve chambers are provided in one set. Each valve chamber is connected to one of the interfaces. Each oil inlet of the oil inlet channel is connected to one of the valve chambers in the set. Each oil outlet of the oil outlet channel is connected to the other valve chamber in the set. The valve body forms an abutment structure in each valve chamber. The interface and the oil inlet or the oil outlet connected to the valve chamber are respectively placed on both sides of the corresponding abutment structure. The abutment structure has an abutment wall.

[0007] At least one set of valve cores, wherein two valve cores are provided in one set, each valve core is movably mounted in one of the valve chambers to abut or separate from the corresponding abutment structure, the valve core has a connecting wall, and a cross section is made along the moving direction of the valve core, the cross section line of the abutment wall and the connecting wall on the same side extends and intersects, the cross section size of the part of the valve core forming the connecting wall and the part of the abutment structure forming the abutment wall is arbitrarily gradually changed along the moving direction of the valve core, the valve core abuts against the abutment wall in such a way that the connecting wall and the abutment wall line are in contact.

[0008] According to one embodiment of this application, two valve chambers in a group are arranged on the same side. The valve body has at least one set of mounting groups. Each mounting group includes a first mounting part and a second mounting part. The first mounting part participates in forming the valve chamber communicating with the oil inlet and is located in the movement direction of the valve core in the corresponding valve chamber. The second mounting part participates in forming the valve chamber communicating with the oil outlet and is located in the movement direction of the valve core in the corresponding valve chamber. The line-sealed valve group further includes at least one pushing mechanism. Each pushing mechanism includes a pushing member. The pushing member includes a pushing group. The pushing group includes a first pushing member and a second pushing member. The first pushing member is movably inserted into the first mounting part and abuts against the valve core in the corresponding valve chamber. The second pushing member is movably inserted into the second mounting part and abuts against the valve core in the corresponding valve chamber. The first pushing member and the second pushing member of each pushing group move in the same direction to push the corresponding valve core to move and abut or separate from the corresponding abutment structure.

[0009] According to one embodiment of this application, each of the pushing mechanisms includes a main body, and the pushing component includes a moving group. The main body is installed on the valve body, and the valve body has at least one movable space. Each of the main bodies has an installation space, and each installation space communicates with one of the movable spaces. Each moving group is installed in an installation space such that it partially moves in the direction of extending into or withdrawing from the movable space. The first pushing member and the second pushing member of a group of pushing groups are partially placed in the same movable space and correspond to the same moving group when their corresponding valve cores are not subjected to external force. The moving direction of the moving group is parallel to the moving direction of the pushing group. The moving group moves in the installation space in the direction of extending into the movable space so as to push the first pushing member and the second pushing member of a group of pushing groups out of the movable space to push the corresponding two valve cores to move and abut or separate from the corresponding two abutting structures.

[0010] According to one embodiment of this application, the valve core has a through channel, the valve cavity is connected to the oil outlet portion or the valve cavity is connected to the oil inlet portion and the through channel, the line-sealed valve assembly further includes at least one sealing element, a sealing element is disposed between each of the first push member and each of the first mounting portions, and each of the second push members is clearance-fitted with the second mounting portion.

[0011] According to one embodiment of this application, a set of valve chambers and valve cores are provided, and a working channel is provided. An oil inlet and an oil outlet are provided. The two interfaces of one working channel are respectively connected to the two valve chambers of the set. The two valve cores of the set move in the same direction so that one valve core abuts against the corresponding abutting structure and the other valve core separates from the corresponding abutting structure, so that the working channel is connected to the oil inlet channel or the oil outlet channel.

[0012] According to one embodiment of this application, when neither of the two valve cores is driven, the valve core in the valve cavity connected to the oil inlet abuts against the corresponding abutting structure, and the valve core in the valve cavity connected to the oil outlet separates from the corresponding abutting structure, so that the working channel is connected to the oil outlet channel and isolated from the oil inlet channel. After both valve cores are driven and moved, the valve core in the valve cavity connected to the oil inlet separates from the corresponding abutting structure, and the valve core in the valve cavity connected to the oil outlet abuts against the corresponding abutting structure, so that the working channel is isolated from the oil outlet channel and connected to the oil inlet channel.

[0013] According to one embodiment of this application, when neither of the two valve cores is driven, the valve core in the valve cavity connected to the oil inlet separates from the corresponding abutment structure, and the valve core in the valve cavity connected to the oil outlet abuts against the corresponding abutment structure, so that the working channel is isolated from the oil outlet channel and connected to the oil inlet channel. After both valve cores are driven and moved, the valve core in the valve cavity connected to the oil inlet abuts against the corresponding abutment structure, and the valve core in the valve cavity connected to the oil outlet separates from the corresponding abutment structure, so that the working channel is connected to the oil outlet channel and isolated from the oil inlet channel.

[0014] According to one embodiment of this application, the valve chamber and the valve core are each provided in two sets, and the working channel is provided in two sets, the oil inlet and the oil outlet are each provided in two sets. The two valve chambers of one set are connected to the two interfaces of the same working channel or to one interface of each of the two working channels. The two valve cores of one set move in the same direction, and the two sets of valve cores move in opposite directions. The two sets of valve cores can be moved arbitrarily to make the valve core abut against or separate from the abutting structure, so as to control the on / off status of the two working channels with the oil inlet channel and the oil outlet channel respectively.

[0015] According to one embodiment of this application, each of the two valve chambers in each group is connected to an interface of each of the two working channels. When neither of the two groups of valve cores is driven, each of the two groups of valve cores abuts against the corresponding abutment structure, so that both working channels are isolated from the oil inlet channel and the oil outlet channel. After one group of valve cores is driven to move, the two valve cores in the group separate from the corresponding abutment structure, so that one of the two working channels is connected to the oil inlet channel and the other is connected to the oil outlet channel. After the two groups of valve cores are driven to move towards each other, the two groups of valve cores separate from the corresponding abutment structure, so that both working channels are connected to the oil inlet channel and the oil outlet channel.

[0016] According to one embodiment of this application, each of the two sets of valve chambers is connected to the interface of the two working channels. When neither set of valve cores is driven, the valve cores in the two valve chambers connected to the oil inlet abut against the corresponding abutment structure, and the valve cores in the two valve chambers connected to the oil outlet separate from the corresponding abutment structure, so that both working channels are connected to the oil outlet channel and isolated from the oil inlet channel. After one set of valve cores is driven to move, either of the two valve cores in the set abuts against the corresponding abutment structure. The first abutting structure is separated from the second, and the second abuts against the corresponding abutting structure, so that one of the two working channels is connected to the oil inlet channel and isolated from the oil outlet channel, while the other remains connected to the oil outlet channel. After the two sets of valve cores are driven to move towards each other, the valve cores in the two valve chambers connected to the oil inlet are separated from the corresponding abutting structure, and the valve cores in the two valve chambers connected to the oil outlet abut against the corresponding abutting structure, so that both working channels are isolated from the oil outlet channel and connected to the oil inlet channel. Attached Figure Description

[0017] Figure 1 A schematic diagram of a first embodiment of the line-sealed valve assembly described in this application is shown in one state.

[0018] Figure 2 It shows Figure 1 Enlarged view of the structure at point A in the middle.

[0019] Figure 3 It shows Figure 1 Enlarged view of the structure at point B in the middle.

[0020] Figure 4 A schematic diagram of the structure of an example of a first embodiment of the line-sealed valve assembly described in this application in another state is shown.

[0021] Figure 5 A schematic diagram of a structural state is shown for yet another example of a first embodiment of the line-sealed valve assembly described in this application.

[0022] Figure 6 A schematic diagram of another example of the first embodiment of the line-sealed valve assembly described in this application is shown in another state.

[0023] Figure 7 A schematic diagram of a second embodiment of the line-sealed valve assembly described in this application is shown in one state.

[0024] Figure 8 A schematic diagram of the structure of an example of a second embodiment of the line-sealed valve assembly described in this application is shown in another state.

[0025] Figure 9 A schematic diagram of the structure of a second embodiment of the line-sealed valve assembly described in this application is shown in yet another state.

[0026] Figure 10 A schematic diagram of a second embodiment of the line-sealed valve assembly described in this application is shown in a further state.

[0027] Figure 11 A schematic diagram of a structural state is shown for yet another example of a second embodiment of the line-sealed valve assembly described in this application.

[0028] Figure 12 A schematic diagram of another example of a second embodiment of the line-sealed valve assembly described in this application is shown in another state.

[0029] Figure 13 A schematic diagram of the structure of yet another example of a second embodiment of the line-sealed valve assembly described in this application is shown in yet another state.

[0030] Figure 14 A schematic diagram of another example of a second embodiment of the line-sealed valve assembly described in this application is shown in yet another state. Detailed Implementation

[0031] The following description is intended to disclose this application and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of this application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this application.

[0032] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0033] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0034] refer to Figures 1 to 14 A preferred embodiment of the line-sealed valve assembly according to this application will be described in detail below. The line-sealed valve assembly includes a valve body 10, which has at least one set of valve chambers 101, at least one working channel 102, an oil inlet channel 103, and an oil outlet channel 104. Each working channel 102 has two interfaces 1021, the oil inlet channel 103 has at least one oil inlet 1031, and the oil outlet channel 104 has at least one oil outlet 1041. Two valve chambers 101 are provided in one set. Each valve chamber 101 communicates with one of the interfaces 1021, and each oil inlet 1031 of the oil inlet channel 103 communicates with one of the valve chambers 101 in the set. Each oil outlet 1041 of the oil outlet channel 104 communicates with the other valve chamber 101 in the set. The valve body 10 forms an abutment structure 11 in each valve cavity 101, and the interface 1021 and the oil inlet 1031 or the oil outlet 1041 connected to the valve cavity 101 are respectively placed on both sides of the corresponding abutment structure 11.

[0035] The line-sealed valve assembly includes at least one set of valve cores 20, with two valve cores 20 in each set. Each valve core 20 is movably mounted in one of the valve chambers 101 to abut or separate from the corresponding abutment structure 11, thereby connecting or disconnecting the portion of the valve chamber 101 connected to the interface 1021 from the portion of the corresponding valve chamber 101 connected to the oil inlet 1031 or the oil outlet 1041, thus controlling the on / off state.

[0036] It is worth mentioning that the valve core 20 has a contact wall 21, and the abutment structure 11 has an abutment wall 111. Taking a cross-section along the moving direction of the valve core 20, the cross-sectional lines of the abutment wall 111 and the contact wall 21 on the same side extend and intersect. The portion of the valve core 20 forming the contact wall 21 and the portion of the abutment structure 11 forming the abutment wall 111 have arbitrarily varying cross-sectional dimensions along the moving direction of the valve core 20. The valve core 20 abuts against the abutment wall 111 in a line contact manner. In this way, the line contact sealing method, compared to the surface contact sealing method used in the slide valve structure, avoids the jamming problem present in the slide valve structure, resulting in better sealing performance, zero leakage, and faster response.

[0037] Furthermore, the line-sealed valve assembly also includes at least two reset members 30, with each reset member 30 having its two ends connected to the inner wall of a valve core 20 and a valve cavity 101, respectively. The reset member 30 is capable of elastic deformation when the corresponding valve core 20 is driven to move, and the reset member 30 is capable of being reset after the force applied to the valve core 20 is removed.

[0038] Furthermore, the line-sealed valve assembly also includes at least one pushing mechanism 40, each of the pushing mechanisms 40 corresponding to a set of valve cores 20 to drive them to move and abut or separate from the corresponding abutment structure 11, while the reset member 30 undergoes elastic deformation.

[0039] Furthermore, the two valve chambers 101 in a set are arranged on the same side. The valve body 10 has at least one set of mounting groups 12, each mounting group 12 including a first mounting part 121 and a second mounting part 122, wherein the first mounting part 121 participates in forming the valve chamber 101 communicating with the oil inlet 1031 and is located in the movement direction of the valve core 20 in the corresponding valve chamber 101, and the second mounting part 122 participates in forming the valve chamber 101 communicating with the oil outlet 1041 and is located in the movement direction of the valve core 20 in the corresponding valve chamber 101.

[0040] Each of the pushing mechanisms 40 includes a pushing member 41, which includes a pushing assembly 411. The pushing assembly 411 includes a first pushing member 4111 and a second pushing member 4112. The first pushing member 4111 is movably inserted into the first mounting portion 121 and abuts against the valve core 20 in the corresponding valve cavity 101. The second pushing member 4112 is movably inserted into the second mounting portion 122 and abuts against the valve core 20 in the corresponding valve cavity 101. The first pushing member 4111 and the second pushing member 4112 of each pushing assembly 411 move in the same direction to push the corresponding valve core 20 to move and abut or separate from the corresponding abutment structure 11.

[0041] Further, each of the pushing mechanisms 40 includes a main body 42, and each pushing member 41 includes a moving assembly 412. The main body 42 is mounted on the valve body 10, which has at least one movable space 105. Each main body 42 has a mounting space 4201, which communicates with the movable space 105. Each moving assembly 412 is mounted in the mounting space 4201 in a manner that allows it to partially extend into or withdraw from the movable space 105. The first pushing member 4111 and the second pushing member 4112 of a set of pushing assemblies 411 are partially kept within the same movable space 105 and correspond to the same moving assembly 412 when their corresponding valve core 20 is not subjected to external force. The moving direction of the moving assembly 412 is parallel to the moving direction of the pushing assembly 411. The movable assembly 412 moves in the mounting space 4201 toward the direction of extending into the active space 105 so as to push the first pusher 4111 and the second pusher 4112 of the set of pusher assemblies 411 out of the active space 105 to push the corresponding two valve cores 20 to move and abut or separate from the corresponding two abutting structures 11.

[0042] Preferably, the movable assembly 412 includes an armature 4121 and a movable member 4122, the movable member 4122 being mounted on the armature 4121, the armature 4121 being movably mounted in the mounting space 4201, and the ends of the first push member 4111 and the second push member 4112 of the push assembly 411, away from the valve core 20, corresponding to the movable member 4122. The main body 42 includes a coil 421 and a mounting shell 422. The mounting shell 422 forms the mounting space 4201. The coil 421 is installed in the mounting shell 422 and sleeved on the armature 4121. The armature 4121 is magnetically connected to the coil 421. The coil 421 is configured to magnetize the armature 4121 and drive the armature 4121 to move in the mounting space 4201, thereby moving the moving part 4122 toward the pushing group 411. The pushing group 411 then pushes the corresponding two valve cores 20 to move and abut or separate from the corresponding two abutting structures 11.

[0043] Preferably, the armature 4121 is made of a soft magnetic material.

[0044] Preferably, the movable member 4122 is detachably mounted to the armature 4121. Preferably, the movable member 4122 is plugged into the armature 4121 so that a movable member 4122 of appropriate size is selected based on the distance between the first push member 4111 and the second push member 4112 of a set of push groups 411, ensuring that the first push member 4111 and the second push member 4112 of a set of push groups 411 can be simultaneously pushed by the same movable member 4122.

[0045] It is worth mentioning that the valve core 20 has a through channel 201, and the portion of the valve cavity 101 connected to the oil outlet 1041 or the portion of the valve cavity 101 connected to the oil inlet 1031 is connected to the through channel 201. The line-sealed valve assembly also includes at least one sealing element 50, and one sealing element 50 is provided between each of the first push member 4111 and a first mounting portion 121 to prevent hydraulic oil introduced by the oil inlet channel 103 from partially seeping into the active space 105, thereby preventing the pressure in the mounting space 4201 from increasing and affecting the operation of the push member 41. Furthermore, each of the second pusher members 4112 is clearance-fitted with the second mounting portion 122 so that the through channel 201 of the valve core 20 in the valve chamber 101 communicating with the oil outlet 1041 communicates with the movable space 105. This allows a portion of the hydraulic oil guided to the oil outlet 1041 to enter the movable space 105 and then be introduced into the mounting space 4201, thereby providing lubrication for the movement of the moving assembly 412 and improving the smoothness of its movement. Additionally, while the moving assembly 412 pushes a set of pusher members 411 out of the movable space 105, the moving assembly 412 squeezes the hydraulic oil in the movable space 105 so that a portion enters the mounting space 4201 and a portion seeps into the gap between the second pusher member 4112 and the second mounting portion 122 for discharge, thus timely relieving pressure.

[0046] In this way, through the sealing cooperation between the first pusher 4111 and the first mounting part 121, and the clearance cooperation between the second pusher 4112 and the second mounting part 122, the pressure entering the active space 105 is reduced while the pressure is released in time. This cooperation provides lubrication for the pusher mechanism 40 without the need for additional oil replenishment, and does not affect its operation. This ensures that the valve core 20 responds quickly, reduces the failure rate, and improves its service life.

[0047] Preferably, the seal 50 is implemented as a sealing ring.

[0048] Further, the valve core 20 includes a core body 22 and a pushed portion 23. The connecting wall 21 is formed in the core body 22. The core body 22 is slidably mounted in the valve cavity 101. The pushed portion 23 is mounted at one end of the core body 22 and corresponds to a first pushing member 4111 or a second pushing member 4112. The core body 22 has a hollow channel 2201, and the pushed portion 23 forms at least one communicating hole 2301 communicating with the hollow channel 2201. The communicating hole 2301 and the hollow channel 2201 together form the through channel 201. One end of the communicating hole 2301 away from the hollow channel 2201 faces the side where the adjacent first pushing member 4111 or second pushing member 4112 is located and is offset from the first pushing member 4111 or second pushing member 4112. When the first pushing member 4111 or the second pushing member 4112 is driven to move, the first pushing member 4111 or the second pushing member 4112 pushes the corresponding pushed part 23 of the valve core 20 to push the core body 22 to move and abut or separate from the abutting structure 11. In this way, through the cooperation of the core body 22 and the pushed part 23, the first pushing member 4111 or the second pushing member 4112 is provided with a force application position, while the hydraulic oil can flow smoothly.

[0049] Preferably, multiple connecting holes 2301 are provided, and the multiple connecting holes 2301 are distributed around the position where the pushed part 23 is pressed by the first pushing member 4111 or the second pushing member 4112, so as to increase the flow channel of hydraulic oil.

[0050] refer to Figure 1 as well as Figures 4 to 6 In the first embodiment, a set of valve chambers 101 and valve cores 20 are provided, and a working channel 102 is provided, along with an oil inlet 1031 and an oil outlet 1041. The two interfaces 1021 of one working channel 102 are respectively connected to the two valve chambers 101 of the set. The two valve cores 20 of the set move in the same direction so that one valve core 20 abuts against the corresponding abutment structure 11 and the other valve core 20 separates from the corresponding abutment structure 11. This allows either the portion of one valve chamber 101 connected to the oil inlet 1031 or the portion of the other valve chamber 101 connected to the oil outlet 1041 to be connected to the portion of the corresponding valve chamber 101 connected to the interface 1021, while the other portion is disconnected from the portion of the corresponding valve chamber 101 connected to the interface 1021. This allows the working channel 102 to connect to the oil inlet channel 103 or the oil outlet channel 104.

[0051] refer to Figure 1 and Figure 4 In one example of the first embodiment, when neither of the two valve cores 20 is driven, the valve core 20 in the valve cavity 101 connected to the oil inlet 1031 abuts against the corresponding abutment structure 11, and the valve core 20 in the valve cavity 101 connected to the oil outlet 1041 separates from the corresponding abutment structure 11. This causes the portion of one valve cavity 101 connected to the oil inlet 1031 to be separated from the portion of the corresponding valve cavity 101 connected to the interface 1021, and the portion of the other valve cavity 101 connected to the oil outlet 1041 to be connected to the portion of the corresponding valve cavity 101 connected to the interface 1021. This allows the working channel 102 to connect to the oil outlet channel 104 and be separated from the oil inlet channel 103, so that the oil can flow from the working channel 102 to the oil outlet channel 104. Oil is discharged through channel 104; after both valve cores 20 are moved by driving force, the valve core 20 in the valve cavity 101 connected to the oil inlet 1031 separates from the corresponding abutment structure 11, and the valve core 20 in the valve cavity 101 connected to the oil outlet 1041 abuts against the corresponding abutment structure 11, so that the part of one valve cavity 101 connected to the oil inlet 1031 is connected to the part of the corresponding valve cavity 101 connected to the interface 1021, and the part of the other valve cavity 101 connected to the oil outlet 1041 is separated from the part of the corresponding valve cavity 101 connected to the interface 1021, thereby separating the working channel 102 from the oil outlet channel 104 and connecting it to the oil inlet channel 103, so that oil is supplied to the working channel 102 by the oil inlet channel 103.

[0052] refer to Figures 5 to 6In another example of the first embodiment, when neither of the two valve cores 20 is driven, the valve core 20 in the valve cavity 101 connected to the oil inlet 1031 separates from the corresponding abutment structure 11, and the valve core 20 in the valve cavity 101 connected to the oil outlet 1041 abuts against the corresponding abutment structure 11, so that the portion of one valve cavity 101 connected to the oil inlet 1031 is connected to the portion of the corresponding valve cavity 101 connected to the interface 1021, and the portion of the other valve cavity 101 connected to the oil outlet 1041 is separated from the portion of the corresponding valve cavity 101 connected to the interface 1021, thereby isolating the working channel 102 from the oil outlet channel 104 and connecting it to the oil inlet channel 103, so that the oil inlet channel 103 supplies oil to the working channel 102. Oil is supplied through channel 102; after both valve cores 20 are moved by driving force, the valve core 20 in the valve cavity 101 connected to the oil inlet 1031 abuts against the corresponding abutment structure 11, and the valve core 20 in the valve cavity 101 connected to the oil outlet 1041 separates from the corresponding abutment structure 11, so that the part of one valve cavity 101 connected to the oil inlet 1031 is isolated from the part of the corresponding valve cavity 101 connected to the interface 1021, and the part of the other valve cavity 101 connected to the oil outlet 1041 is connected to the part of the corresponding valve cavity 101 connected to the interface 1021, thereby making the working channel 102 connected to the oil outlet channel 104 and isolated from the oil inlet channel 103, so that oil is discharged from the working channel 102 to the oil outlet channel 104.

[0053] refer to Figures 7 to 14 In the second embodiment, two sets of valve chambers 101 and valve cores 20 are provided, and two working channels 102 are provided, along with two oil inlets 1031 and two oil outlets 1041. The two valve chambers 101 in one set are connected to the two interfaces 1021 of the same working channel 102 or to one interface 1021 of each of the two working channels 102. The two valve cores 20 in one set move in the same direction, while the two sets of valve cores 20 move in opposite directions. The two sets of valve cores 20 can be moved arbitrarily to abut or separate from the abutment structure 11, thereby controlling the connection / disconnection of each of the two working channels 102 with the oil inlet channel 103 and the oil outlet channel 104.

[0054] refer to Figures 7 to 10In one example of the second embodiment, the two valve chambers 101 in each group are connected to one of the interfaces 1021 of each of the two working channels 102. When neither group of valve cores 20 is under driving force, each group of valve cores 20 abuts against the corresponding abutment structure 11, so that the portion of each valve chamber 101 in each group that is connected to the two oil inlets 1031 is isolated from the portion of each of the two valve chambers 101 that is connected to one of the interfaces 1021 of each of the two working channels 102, and the portion of the other valve chamber 101 in each group that is connected to the two oil outlets 1041 is isolated from the portion of each of the two valve chambers 101. Each of the interfaces 1021 connected to each of the two working channels 102 groups is partially isolated, thereby isolating both working channels 102 from the oil inlet channel 103 and the oil outlet channel 104; after one group of valve cores 20 is driven to move, the two valve cores 20 in the group are separated from the corresponding abutment structure 11, so that the portion of one valve chamber 101 in the corresponding group connected to the oil inlet 1031 is separated from the portion of the corresponding valve chamber 101 connected to one of the working channels 102. A portion of the interface 1021 is connected, and a portion of another valve chamber 101 in the corresponding group is connected to the oil outlet 1041, and a portion of the corresponding valve chamber 101 is connected to a portion of the interface 1021 in another working channel 102, so that one of the two working channels 102 is connected to the oil inlet channel 103 and the other is connected to the oil outlet channel 104, so that the oil inlet channel 103 supplies oil to one of the working channels 102, and the other working channel 102 supplies oil to the oil outlet channel 104. 04 Oil discharge; After the two sets of valve cores 20 are driven to move towards each other, the two sets of valve cores 20 are separated from the corresponding abutment structure 11, so that the parts of the four valve chambers 101 of the two sets that are connected to the four interfaces 1021 are respectively connected to the parts of the two valve chambers 101 that are connected to the oil inlet 1031 and the parts of the two valve chambers 101 that are connected to the oil outlet 1041, so that the two working channels 102 are connected to the oil inlet channel 103 and the oil outlet channel 104.

[0055] refer to Figures 11 to 14In another example of the second embodiment, each of the two sets of valve chambers 101 is connected to the interface 1021 of the two working channels 102.When neither set of valve cores 20 is under driving force, the valve cores 20 in the two valve chambers 101 connected to the oil inlet 1031 abut against the corresponding abutment structure 11, and the valve cores 20 in the two valve chambers 101 connected to the oil outlet 1041 separate from the corresponding abutment structure 11, so that the portion of each of the two valve chambers 101 connected to the oil inlet 1031 is separated from the portion of each of the two valve chambers 101 connected to one of the interfaces 1021 of each of the two working channels 102, and the portion of each of the two valve chambers 101 connected to the oil outlet 1041 is separated from the portion of each of the two valve chambers 101 connected to the other interface 1021 of each of the two working channels 102. A portion of the interface 1021 is connected, thereby enabling both working channels 102 to communicate with the oil outlet channel 104 and be isolated from the oil inlet channel 103, so that oil can be discharged from the two working channels 102 to the oil outlet channel 104 respectively; after one set of valve cores 20 is driven to move, either of the two valve cores 20 in the set separates from the corresponding abutment structure 11 and the other abuts with the corresponding abutment structure 11, so that a portion of one valve chamber 101 in the corresponding set communicates with the oil inlet 1031 and a portion of the corresponding valve chamber 101 communicates with a portion of the interface 1021 of one working channel 102, and the other valve chamber 101 in the corresponding set communicates with the oil outlet 1031. Part 41 is separated from the portion of the corresponding valve chamber 101 that is connected to another interface 1021 of one of the working channels 102, so that one of the two working channels 102 is connected to the oil inlet channel 103 and separated from the oil outlet channel 104, while the other remains connected to the oil outlet channel 104, so that oil is supplied from the oil inlet channel 103 to one of the working channels 102, while the other working channel 102 continues to discharge oil to the oil outlet channel 104; after the two sets of valve cores 20 are driven to move towards each other, the valve cores 20 in the two valve chambers 101 connected to the oil inlet 1031 are separated from the corresponding abutment structure 11, and the valve cores 20 in the two valve chambers 101 connected to the oil outlet 1041 are separated from the corresponding abutment structure 11, and the valve cores 20 in the two valve chambers 101 connected to the oil outlet 1041 are separated from the corresponding abutment structure 11. The valve core 20 in cavity 101 abuts against the corresponding abutting structure 11, so that the portion of each of the two valve cavities 101 connected to the oil inlet 1031 is connected to the portion of each of the two valve cavities 101 connected to one of the interfaces 1021 of each of the two working channels 102, and the portion of each of the two valve cavities 101 connected to the oil outlet 1041 is separated from the portion of each of the two valve cavities 101 connected to the other interface 1021 of each of the two working channels 102, thereby making both working channels 102 separated from the oil outlet channel 104 and connected to the oil inlet channel 103, so that oil is supplied to the two working channels 102 by the oil inlet channel 103.

[0056] Those skilled in the art should understand that the embodiments of this application described above and shown in the accompanying drawings are merely examples and do not limit the scope of this application. The advantages of this application have been fully and effectively implemented. The functional and structural principles of this application have been demonstrated and explained in the embodiments, and any variations or modifications can be made to the implementation of this application without departing from the stated principles.

Claims

1. A valve assembly with a line seal, characterized in that, The line-sealed valve assembly includes: The valve body has at least one set of valve chambers, at least one working channel, an oil inlet channel, and an oil outlet channel. Each working channel has two interfaces. The oil inlet channel has at least one oil inlet, and the oil outlet channel has at least one oil outlet. Two valve chambers are provided in one set. Each valve chamber is connected to one of the interfaces. Each oil inlet of the oil inlet channel is connected to one of the valve chambers in the set. Each oil outlet of the oil outlet channel is connected to the other valve chamber in the set. The valve body forms an abutment structure in each valve chamber. The interface and the oil inlet or the oil outlet connected to the valve chamber are respectively placed on both sides of the corresponding abutment structure. The abutment structure has an abutment wall. At least one set of valve cores, wherein two valve cores are provided in one set, each valve core is movably mounted in one of the valve chambers to abut or separate from the corresponding abutment structure, the valve core has a connecting wall, and a cross section is made along the moving direction of the valve core, the cross section line of the abutment wall and the connecting wall on the same side extends and intersects, the cross section size of the part of the valve core forming the connecting wall and the part of the abutment structure forming the abutment wall is arbitrarily gradually changed along the moving direction of the valve core, the valve core abuts against the abutment wall in such a way that the connecting wall and the abutment wall line are in contact.

2. The line-sealed valve assembly according to claim 1, characterized in that, Two valve chambers in a group are arranged on the same side. The valve body has at least one set of mounting groups. Each mounting group includes a first mounting part and a second mounting part. The first mounting part participates in forming the valve chamber communicating with the oil inlet and is located in the movement direction of the valve core in the corresponding valve chamber. The second mounting part participates in forming the valve chamber communicating with the oil outlet and is located in the movement direction of the valve core in the corresponding valve chamber. The line-sealed valve group also includes at least one pushing mechanism. Each pushing mechanism includes a pushing member. The pushing member includes a pushing group. The pushing group includes a first pushing member and a second pushing member. The first pushing member is movably inserted into the first mounting part and abuts against the valve core in the corresponding valve chamber. The second pushing member is movably inserted into the second mounting part and abuts against the valve core in the corresponding valve chamber. The first pushing member and the second pushing member of each pushing group move in the same direction to push the corresponding valve core to move and abut or separate from the corresponding abutment structure.

3. The line-sealed valve assembly according to claim 2, characterized in that, Each of the pushing mechanisms includes a main body, and the pushing component includes a moving assembly. The main body is mounted on the valve body, which has at least one movable space. Each main body has an installation space, and each installation space communicates with one of the movable spaces. Each moving assembly is mounted in an installation space such that it partially moves in or out of the movable space. The first and second pushing components of a set of pushing assemblies remain partially placed in the same movable space and correspond to the same moving assembly when their corresponding valve cores are not subjected to external forces. The moving direction of the moving assembly is parallel to the moving direction of the pushing assembly. The moving assembly moves in the installation space in the direction of extending into the movable space to push the first and second pushing components of the set of pushing assemblies out of the movable space, thereby pushing the corresponding two valve cores to move and abut or separate from the corresponding two abutting structures.

4. The line-sealed valve assembly according to claim 3, characterized in that, The valve core has a through channel, and the valve cavity is connected to the oil outlet portion or the valve cavity is connected to the oil inlet portion and the through channel. The line-sealed valve assembly further includes at least one sealing element. A sealing element is provided between each of the first push members and each of the first mounting portions, and each of the second push members is clearance-fitted with the second mounting portion.

5. The line-sealed valve assembly according to claim 4, characterized in that, Each valve chamber and valve core is provided in a set, and each working channel is provided in a set. Each oil inlet and oil outlet is provided in a set. The two interfaces of one working channel are respectively connected to the two valve chambers of the set. The two valve cores of the set move in the same direction so that one valve core abuts against the corresponding abutting structure and the other valve core separates from the corresponding abutting structure, so that the working channel is connected to the oil inlet channel or the oil outlet channel.

6. The line-sealed valve assembly according to claim 5, characterized in that, When neither of the valve cores is driven, the valve core in the valve chamber connected to the oil inlet abuts against the corresponding abutting structure, and the valve core in the valve chamber connected to the oil outlet separates from the corresponding abutting structure, so that the working channel is connected to the oil outlet channel and isolated from the oil inlet channel. After both valve cores are driven and moved, the valve core in the valve chamber connected to the oil inlet separates from the corresponding abutting structure, and the valve core in the valve chamber connected to the oil outlet abuts against the corresponding abutting structure, so that the working channel is isolated from the oil outlet channel and connected to the oil inlet channel.

7. The line-sealed valve assembly according to claim 5, characterized in that, When neither of the two valve cores is driven, the valve core in the valve chamber connected to the oil inlet separates from the corresponding abutment structure, and the valve core in the valve chamber connected to the oil outlet abuts against the corresponding abutment structure, thereby isolating the working channel from the oil outlet channel and connecting it to the oil inlet channel. After both valve cores are driven and moved, the valve core in the valve chamber connected to the oil inlet abuts against the corresponding abutment structure, and the valve core in the valve chamber connected to the oil outlet separates from the corresponding abutment structure, thereby connecting the working channel to the oil outlet channel and isolating it from the oil inlet channel.

8. The line-sealed valve assembly according to claim 4, characterized in that, The valve chamber and the valve core are each provided in two sets, and the working channel is provided in two sets. The oil inlet and the oil outlet are each provided in two sets. The two valve chambers in one set are connected to the two interfaces of the same working channel or to one interface of each of the two working channels. The two valve cores in one set move in the same direction, and the two sets of valve cores move in opposite directions. The two sets of valve cores can be moved arbitrarily to make the valve core abut against or separate from the abutment structure, so as to control the on / off status of the two working channels with the oil inlet channel and the oil outlet channel respectively.

9. The line-sealed valve assembly according to claim 8, characterized in that, Each group of two valve chambers is connected to one of the interfaces of each of the two working channels. When neither group of valve cores is driven, each group of valve cores abuts against the corresponding abutment structure, so that both working channels are isolated from the oil inlet channel and the oil outlet channel. After one group of valve cores is driven to move, the two valve cores in the group separate from the corresponding abutment structure, so that one of the two working channels is connected to the oil inlet channel and the other is connected to the oil outlet channel. After the two groups of valve cores are driven to move towards each other, the two groups of valve cores separate from the corresponding abutment structure, so that both working channels are connected to the oil inlet channel and the oil outlet channel.

10. The line-sealed valve assembly according to claim 8, characterized in that, Each of the two sets of valve chambers is connected to the interface of the two working channels. When neither set of valve cores is driven, the valve cores in the two valve chambers connected to the oil inlet abut against the corresponding abutment structure, and the valve cores in the two valve chambers connected to the oil outlet separate from the corresponding abutment structure, so that both working channels are connected to the oil outlet channel and isolated from the oil inlet channel. After one set of valve cores is driven to move, either of the two valve cores in that set abuts against the corresponding abutment structure. The valve cores are separated from the corresponding abutting structure, so that one of the two working channels is connected to the oil inlet channel and isolated from the oil outlet channel, while the other remains connected to the oil outlet channel. After the two sets of valve cores are driven to move towards each other, the valve cores in the two valve chambers connected to the oil inlet are separated from the corresponding abutting structure, and the valve cores in the two valve chambers connected to the oil outlet channel abut against the corresponding abutting structure, so that both working channels are isolated from the oil outlet channel and connected to the oil inlet channel.

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