A multi-position directional valve and valve core control method

Abstract

This invention belongs to the field of directional valve technology and discloses a multi-position directional valve and valve core control method, including a valve body, and further including: a feed pipe, which is fixedly connected to one side of the valve body; a discharge pipe, which is fixedly connected to the top of the valve body; and a first protective component, which is fixedly installed on one side of the valve body and wraps around the outside of the feed pipe. The above technical solution, by setting a first protective component, a drive component, and a second protective component, allows the output end of one side of the drive component to move, thereby causing the entire first protective component on both sides to move towards each other and seal the feed pipe when it is idle. The design of the second protective component enables simultaneous shielding and sealing of both the feed pipe and the discharge pipe, greatly improving the convenience of operation and reducing component wear.

Description

Technical Field

[0001] This invention belongs to the field of directional valve technology, specifically a multi-position directional valve and a valve core control method. Background Technology

[0002] A multi-position directional valve is a type of valve that can change the flow direction or on / off state of fluids (such as hydraulic oil, gas, etc.) by switching different positions. It has wide applications in industrial automation, engineering machinery, aerospace and other fields. The core components of a multi-position directional valve are the valve core and the valve body. By moving or rotating the valve core within the valve body, the connection method of the fluid channel is changed, thereby realizing the reversal or on / off of the fluid.

[0003] Existing multi-position directional valves require the fluid to be transported to be connected to the inlet pipe via a pipeline before it can be used for fluid transport, while the outlet pipe is connected to another pipeline. Before the pipeline connection, each pipeline is usually equipped with a corresponding rubber seal to seal the interface. However, this method cannot achieve both opening and closing sealing at the same time, which not only increases the labor intensity of the operator, but also increases the wear and tear of the components due to the need to replace the rubber. Therefore, it is necessary to improve the valve. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a multi-position directional valve and valve core control method, which has the advantage of facilitating simultaneous multi-port sealing protection.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-position reversing valve, comprising a valve body, and further comprising: a feed pipe, the feed pipe being fixedly connected to one side of the valve body; a discharge pipe, the discharge pipe being fixedly connected to the top of the valve body; a first protective component, the first protective component being fixedly installed on one side of the valve body and covering the outside of the feed pipe; a drive component, the drive component being disposed inside the valve body and located at the inner end of one side of the first protective component; and a second protective component, the second protective component being disposed at the top of the valve body and covering the top of the discharge pipe; wherein, the first protective component includes a pipe protective cover movably installed on one side of the valve body, a sliding frame fixedly installed on one side of the outer end of the pipe protective cover and located inside the valve body, a triangular plate fixedly installed on the inner end of one side of the sliding frame, and a sliding groove being formed inside the triangular plate.

[0006] Preferably, a shift motor is provided on the front of the valve body, and the position of the shift motor corresponds one-to-one with the position of the discharge pipe.

[0007] Preferably, the sliding frame is slidably connected to the inner cavity of the valve body located on both sides of the feed pipe.

[0008] Preferably, the drive assembly includes a pneumatic cylinder, a movable rod, and a drive shaft; The pneumatic cylinder is fixedly installed on the back of the valve body and is located at the inner end of the triangular plate. The movable rod is fixedly installed at the output end of the pneumatic cylinder and is located on one side of the triangular plate. The drive shaft is fixedly installed inside both ends of the movable rod.

[0009] Preferably, the protruding portion of the drive shaft extends into the interior of the triangular plate, and the protruding portion of the drive shaft is slidably connected to the inner wall of the triangular plate.

[0010] Preferably, the second protective component includes a mounting cover, a pipe shielding block, and a first elastic element; The mounting cover is fixedly installed on the top of the valve body, and the pipe blocking block is movably installed inside the mounting cover. The pipe blocking block is located on both sides of the top of the discharge pipe, and the pipe blocking block is elastically connected to the inner wall of the mounting cover through a first elastic element.

[0011] Preferably, the inner side of the mounting cover is designed with a slope.

[0012] Preferably, a fixed cover is provided on one side of the mounting cover, and a linkage component is provided inside the fixed cover. The linkage component includes a movable frame, a connecting frame, and a linkage arm. The movable frame is movably installed on the outside of the mounting cover, the connecting frame is fixedly installed on the middle of the top of the pipe protective cover, and the top of the connecting frame extends to the middle of the inner cavity of the fixed cover. The linkage arm is hinged between the inner side of the movable frame and the inner side of the top of the connecting frame.

[0013] Preferably, the inner end of the movable frame is adapted to the internal dimensions of the first elastic element, and the inner end surface of the movable frame is slidably connected to the inner wall of the first elastic element.

[0014] A method for controlling the valve core of a multi-position directional valve, the control method is as follows: S1: Axial electromagnetic force is generated by energizing the electromagnetic coil inside the shift motor; S2: When electromagnetic force is generated, it directly drives the valve core at the bottom of the discharge pipe to move, thereby changing the connection between the channel inside the valve body that is connected to the feed pipe and the channel at the corresponding position that is connected to the discharge pipe, thus realizing the switching of the position. S3: After power failure, the valve core can be restored to its initial state by relying on the internal spring reset mechanism at the bottom of the discharge pipe corresponding to the gear position.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: The above technical solution, by setting up a first protective component, a driving component, and a second protective component, allows the output end of one side of the driving component to move, thereby causing the entire first protective component to move towards each other and seal the feed pipe when it is not in use. The design of the second protective component can cover and seal the top of the discharge pipe, so as to simultaneously cover and seal the entire feed pipe and discharge pipe, which greatly improves the convenience of operation and reduces the wear and tear of components.

[0016] This invention, by setting up a movable frame and a connecting frame, allows the connecting frame to be driven downward by the two ends of the first protective component facing each other. This causes the linkage arm to deflect, and the deflection of the linkage arm causes the movable frame to move in opposite directions, clamping and fixing the two sides of the second protective component. This ensures a stable seal between the second protective component and the top of the discharge pipe. When the first protective component releases its seal on the feed pipe, the connecting frame moves upward, causing the linkage arm to release the clamping of the movable frame. The feed pipe can then be connected smoothly. When connecting the discharge pipe, the top of the first protective component can be pressed down to release the seal on the top of the discharge pipe from both sides, allowing for pipe connection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a partial cross-sectional view of the valve body of the present invention; Figure 3 This is a cross-sectional view of the pneumatic cylinder of the present invention; Figure 4 for Figure 3 A magnified schematic diagram of the partial structure at point A in the middle; Figure 5 for Figure 3 A magnified schematic diagram of the local structure at point B; Figure 6 This is a partial cross-sectional view of the second protective component of the present invention.

[0018] In the diagram: 1. Valve body; 2. Feed pipe; 3. Discharge pipe; 4. First protective assembly; 401. Pipe protective cover; 402. Sliding frame; 403. Triangular plate; 404. Slide groove; 5. Drive assembly; 501. Pneumatic cylinder; 502. Movable rod; 503. Drive shaft; 6. Second protective assembly; 601. Mounting cover; 602. Pipe shield; 603. First elastic element; 7. Fixed cover; 8. Linkage assembly; 801. Movable frame; 802. Connecting frame; 803. Linkage arm; 9. Gear shifting motor. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 6 As shown, the present invention provides a multi-position reversing valve, including a valve body 1, and further including: a feed pipe 2, which is fixedly connected to one side of the valve body 1; a discharge pipe 3, which is fixedly connected to the top of the valve body 1; a first protective component 4, which is fixedly installed on one side of the valve body 1 and wraps around the outside of the feed pipe 2; a drive component 5, which is disposed inside the valve body 1 and located at the inner end of one side of the first protective component 4; and a second protective component 6, which is disposed at the top of the valve body 1 and wraps around the top of the discharge pipe 3; wherein, the first protective component 4 includes a pipe protective cover 401 movably installed on one side of the valve body 1, a sliding frame 402 fixedly installed on one side of the outer end of the pipe protective cover 401 and located inside the valve body 1, and a triangular plate 403 fixedly installed on the inner end of one side of the sliding frame 402, and a sliding groove 404 is opened inside the triangular plate 403.

[0021] When the drive component 5 is running, the output end portion can drive the protruding part of the sliding end on one side to slide inside the slide groove 404, which will pull the two triangular plates 403, the sliding frame 402 and the pipe protective cover 401 to move towards each other until the pipe blocking block 602 moves towards each other and fits together, so as to block and seal the feed pipe 2. Through the design of the second protective component 6, the discharge pipe 3 can be blocked and sealed.

[0022] like Figure 1 and Figure 3 As shown, a shift motor 9 is provided on the front of the valve body 1, and the position of the shift motor 9 corresponds one-to-one with the position of the discharge pipe 3.

[0023] The above solution is adopted: through the design of the shift motor 9, the valve core in the bottom channel of the corresponding discharge pipe 3 can be smoothly driven to connect with the channel on one side of the feed pipe 2, so as to realize the switching connection of the gear.

[0024] like Figure 2 As shown, the sliding frame 402 is slidably connected to the inner cavity of the valve body 1 located on both sides of the feed pipe 2.

[0025] By adopting the above solution, the sliding frame 402 is slidably connected to the inner cavity of the valve body 1, which can limit the movement of the pipe guard 401 in opposite directions, so as to ensure that the pipe guard 401 can smoothly achieve sealing and opening operation of the feed pipe 2.

[0026] like Figure 2 As shown, the drive assembly 5 includes a pneumatic cylinder 501, a movable rod 502, and a drive shaft 503; The pneumatic cylinder 501 is fixedly installed on the back of the valve body 1, and the pneumatic cylinder 501 is located at the inner end of the triangular plate 403. The movable rod 502 is fixedly installed at the output end of the pneumatic cylinder 501, and the movable rod 502 is located on one side of the triangular plate 403. The drive shaft 503 is fixedly installed inside both ends of the movable rod 502.

[0027] The above solution is adopted: by setting up a pneumatic cylinder 501, when the operator starts the pneumatic cylinder 501, the output end of the pneumatic cylinder 501 can drive the movable rod 502 and the drive shaft 503 to move back and forth as a whole.

[0028] like Figure 4 As shown, the protruding part of the drive shaft 503 extends to the interior of the triangular plate 403, and the protruding part of the drive shaft 503 is slidably connected to the inner wall of the triangular plate 403.

[0029] The above solution is adopted: by setting up a drive shaft 503, when the pneumatic cylinder 501 drives the movable rod 502 and the drive shaft 503 to move back and forth, the drive shaft 503 will slide back and forth on the inner wall of the slide groove 404, thereby driving the two triangular plates 403, the sliding frame 402 and the pipe guard 401 to move in opposite directions or away from each other.

[0030] like Figure 6 As shown, the second protective component 6 includes a mounting cover 601, a pipe blocking block 602, and a first elastic member 603; The mounting cover 601 is fixedly installed on the top of the valve body 1, and the pipe blocking block 602 is movably installed inside the mounting cover 601. The pipe blocking block 602 is located on both sides of the top of the discharge pipe 3. The pipe blocking block 602 is elastically connected to the inner wall of the mounting cover 601 through the first elastic member 603.

[0031] The above solution is adopted: through the elastic force of the first elastic element 603 itself, the two pipe blocking blocks 602 will be pushed to move towards each other inside the mounting cover 601, so as to block and seal the top of the discharge pipe 3 and prevent dust from entering when idle.

[0032] like Figure 6 As shown, the inner side of the mounting cover 601 adopts a sloping design.

[0033] By adopting the above solution: through the inclined design of the top of the mounting cover 601, the end of the connected pipe can be pressed down on the inclined surface of the inner end of the mounting cover 601, which allows the mounting cover 601 to move smoothly in opposite directions and compresses the first elastic element 603.

[0034] like Figure 5 As shown, a fixed cover 7 is provided on one side of the mounting cover 601, and a linkage component 8 is provided inside the fixed cover 7. The linkage component 8 includes a movable frame 801, a connecting frame 802, and a linkage arm 803. The movable frame 801 is movably installed on the outside of the mounting cover 601, the connecting frame 802 is fixedly installed on the middle of the top of the pipe protective cover 401, and the top of the connecting frame 802 extends to the middle of the inner cavity of the fixed cover 7. The linkage arm 803 is hinged between the inner side of the movable frame 801 and the inner side of the top of the connecting frame 802.

[0035] The above solution is adopted: by setting up a linkage arm 803, when the entire pipe protective cover 401 is driven to move towards or away from each other, the top pipe protective cover 401 will drive the entire connecting frame 802 to move up and down, so that the linkage arm 803 can drive the movable frame 801 to move towards or away from each other.

[0036] like Figure 6 As shown, the inner end of the movable frame 801 is adapted to the internal dimensions of the first elastic member 603, and the inner end surface of the movable frame 801 is slidably connected to the inner wall of the first elastic member 603.

[0037] By adopting the above solution: through the inner end design of the movable frame 801, the movable frame 801 can be made to face each other to squeeze and clamp the mounting cover 601, and at the same time, the first elastic member 603 can be limited.

[0038] A method for controlling the valve core of a multi-position directional valve, the control method is as follows: S1: Axial electromagnetic force is generated by energizing the electromagnetic coil inside the shift motor 9; S2: When electromagnetic force is generated, it directly drives the valve core at the bottom of the discharge pipe 3 to move, thereby changing the connection between the channel inside the valve body 1 that is connected to the feed pipe 2 and the channel at the corresponding position that is connected to the discharge pipe 3, thus realizing the switching of the position. S3: After power failure, the valve core can be restored to its initial state by relying on the internal spring reset mechanism at the bottom of the discharge pipe 3.

[0039] Working principle and usage process of this invention: First, when the operator needs to connect the feed pipe 2, the pneumatic cylinder 501 can be activated. The operation of the pneumatic cylinder 501 will cause the output end to drive the movable rod 502 and the drive shaft 503 to move to one side. At this time, the drive shaft 503 will slide along the inclined surface of the slide groove 404, which will squeeze and push the two triangular plates 403, the sliding frame 402 and the pipe protective cover 401 to move in opposite directions, so as to release the obstruction and sealing of the feed pipe 2. Finally, the feed pipe 2 can be connected.

[0040] Then, when the protective cover 401 moves in opposite directions, the protective cover 401 at the top will push the connecting frame 802 upward. The upward movement of the connecting frame 802 will cause the linkage arm 803 to deflect smoothly, so that the linkage arm 803 will squeeze and push the linkage arm 803 to move in opposite directions until the inner end of the movable frame 801 releases the clamping and fixing effect on the mounting cover 601. Then, when it is necessary to connect the discharge pipe 3 of the corresponding position, the end of the pipe to be connected can be pressed down to squeeze the inclined surface inside the mounting cover 601, so that the mounting cover 601 is pushed to move in opposite directions, thereby releasing the top cover sealing of the discharge pipe 3, and finally realizing the connection of the pipe of the corresponding position. After that, the operator can start the shift motor 9 of the corresponding position to realize the fluid through the feed pipe 2 from the inside of the discharge pipe 3 of the corresponding position for conveying and reversing discharge.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-position directional control valve, comprising a valve body (1), characterized in that: Also includes; Feed pipe (2), the feed pipe (2) is fixedly connected to one side of valve body (1); The discharge pipe (3) is fixedly connected to the top of the valve body (1); The first protective component (4) is fixedly installed on one side of the valve body (1) and the first protective component (4) is wrapped around the outside of the feed pipe (2); Drive assembly (5), which is disposed inside the valve body (1) and located at the inner end of one side of the first protective assembly (4); The second protective component (6) is disposed on the top of the valve body (1) and is wrapped around the top of the discharge pipe (3); The first protective component (4) includes a pipe guard (401) movably installed on one side of the valve body (1). A sliding frame (402) located inside the valve body (1) is fixedly installed on one side of the outer end of the pipe guard (401). A triangular plate (403) is fixedly installed on the inner end of one side of the sliding frame (402). A groove (404) is provided inside the triangular plate (403).

2. The multi-position directional valve according to claim 1, characterized in that: The valve body (1) is provided with a shift motor (9) on the front side, and the position of the shift motor (9) corresponds one-to-one with the position of the discharge pipe (3).

3. The multi-position directional valve according to claim 1, characterized in that: The sliding frame (402) is slidably connected to the inner cavity of the valve body (1) located on both sides of the feed pipe (2).

4. The multi-position directional valve according to claim 1, characterized in that: The drive assembly (5) includes a pneumatic cylinder (501), a movable rod (502), and a drive shaft (503); The pneumatic cylinder (501) is fixedly installed on the back of the valve body (1), and the pneumatic cylinder (501) is located at the inner end of the triangular plate (403). The movable rod (502) is fixedly installed at the output end of the pneumatic cylinder (501), and the movable rod (502) is located on one side of the triangular plate (403). The drive shaft (503) is fixedly installed inside both ends of the movable rod (502).

5. The multi-position directional valve according to claim 4, characterized in that: The protruding portion of the drive shaft (503) extends into the interior of the triangular plate (403), and the protruding portion of the drive shaft (503) is slidably connected to the inner wall of the triangular plate (403).

6. The multi-position directional valve according to claim 1, characterized in that: The second protective component (6) includes a mounting cover (601), a pipe shield (602), and a first elastic element (603). The mounting cover (601) is fixedly installed on the top of the valve body (1), and the pipe blocking block (602) is movably installed inside the mounting cover (601). The pipe blocking block (602) is located on both sides of the top of the discharge pipe (3). The pipe blocking block (602) is elastically connected to the inner wall of the mounting cover (601) through the first elastic element (603).

7. The multi-position directional valve according to claim 6, characterized in that: The inner side of the mounting cover (601) is designed with a slope.

8. The multi-position directional valve according to claim 6, characterized in that: A fixed cover (7) is provided on one side of the mounting cover (601), and a linkage component (8) is provided inside the fixed cover (7). The linkage component (8) includes a movable frame (801), a connecting frame (802), and a linkage arm (803). The movable frame (801) is movably installed on the outside of the mounting cover (601), the connecting frame (802) is fixedly installed on the middle of the top of the pipe guard (401), and the top of the connecting frame (802) extends to the middle of the inner cavity of the fixed cover (7). The linkage arm (803) is hinged between the inner side of the movable frame (801) and the inner side of the top of the connecting frame (802).

9. The multi-position directional valve according to claim 8, characterized in that: The inner end of the movable frame (801) is adapted to the internal dimensions of the first elastic member (603), and the inner end surface of the movable frame (801) is slidably connected to the inner wall of the first elastic member (603).

10. A method for controlling the valve core of a multi-position directional valve, applied to the multi-position directional valve according to any one of claims 1-9, characterized in that, The control method is as follows: S1: Axial electromagnetic force is generated by energizing the electromagnetic coil inside the shift motor (9); S2: When electromagnetic force is generated, the valve core at the bottom of the discharge pipe (3) is driven to move, thereby changing the connection between the channel inside the valve body (1) that is connected to the feed pipe (2) and the channel at the corresponding position that is connected to the discharge pipe (3), so as to realize the switching of the position. S3: After power failure, the valve core can be restored to its initial state by relying on the internal spring reset mechanism of the corresponding gear at the bottom of the discharge pipe (3).

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