Bidirectional locking valve and fluid conveying pipeline with same

Abstract

The invention relates to a two-way explosion-proof valve and a fluid conveying pipeline with the two-way explosion-proof valve. The bidirectional locking valve comprises a butterfly valve, a rotating shaft coaxially connected with a valve rod of the butterfly valve, a connecting part connected with a valve body of the butterfly valve, a locking piece and an elastic reset mechanism. The radial side wall of the rotating shaft is provided with a long-strip-shaped protrusion and two or more limiting protrusions. The locking piece is detachably connected with the connecting part, the two opposite sides of the locking piece installed on the connecting part abut against the two limiting protrusions, and rotation of the limiting protrusions and the rotating shaft is bidirectionally locked; the two-way locking valve is provided with two rotating shaft locking positions, namely a first locking position and an original locking position. When the rotating shaft is located at the original locking position, the elastic part of the elastic reset mechanism is in a natural state; when located at the first locking position, the long-strip-shaped protrusion compresses the elastic part. The elastic reset mechanism is used for elastically pushing the long-strip-shaped protrusion and the rotating shaft to rotate and reset to the original locking position after the locking piece is dismantled and locking is relieved, and the rotating shaft is suitable for rotating to the first locking position from the original locking position so as to change the opening degree of the butterfly valve.

Description

Technical Field

[0001] The present application relates to the technical field of fluid control valves, and in particular to a two-way locking valve and a fluid delivery pipeline having the same. Background Art

[0002] A butterfly valve, also known as a flap valve, is a valve used in fluid delivery pipelines to control the flow of fluid in the pipe by using its own opening, such as various types of fluids such as flammable gas, steam, water, mud, oil and liquid metal. A butterfly valve usually includes a fixed cylindrical channel (valve body), a flipping disc-shaped disc and a rotating valve stem. A driving device is usually set at the valve stem to drive the valve stem to rotate, driving the disc fixedly connected to it to rotate in the valve body, thereby achieving the purpose of adjusting the opening.

[0003] As a valve, the existing butterfly valve itself does not have a locking function, such as patent document CN101384848A. The disc plate is easy to rotate randomly under the impact of the fluid, and the stability of the valve opening after adjustment cannot be guaranteed. This defect can only be overcome by connecting an external driving device with a locking function, which puts higher requirements on the driving method and driving device of the valve stem, which is not conducive to the promotion and application of butterfly valves.

[0004] Therefore, how to design a butterfly valve with a self-locking function has become an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] Based on the above problems, the present application provides a two-way locking valve and a fluid delivery pipeline having the same.

[0006] In order to achieve the purpose of the present invention, a two-way locking valve is provided, which is used to be installed on a fluid delivery pipeline to adjust, control and cut off the fluid flow of the fluid delivery pipeline, comprising:

[0007] Butterfly valve, rotating shaft, fixing part, locking part and elastic reset mechanism;

[0008] The rotating shaft is coaxially connected to the valve stem of the butterfly valve, a long protrusion and two or more limit protrusions are provided on the radial side wall of the rotating shaft, the fixing portion is connected to the valve body of the butterfly valve, the locking portion includes a locking member, the fixing portion is provided with a connecting portion to be detachably connected to the locking member, the locking member installed on the connecting portion is simultaneously located in the rotation track area of ​​the two limit protrusions, and the two opposite sides are respectively abutted against the two limit protrusions, which is suitable for limiting the rotation of the limit protrusions and bidirectionally locking the rotation of the rotating shaft;

[0009] More than two limiting protrusions form more than two rotating shaft locking positions, wherein the two rotating shaft locking positions are respectively a first locking position and an original locking position, and the bidirectional locking valve is only provided with one of the original locking positions. When the rotating shaft is located at the original locking position, the elastic part of the elastic reset mechanism is in a natural state, and when the rotating shaft is located at the first locking position, the long protrusion of the rotating shaft compresses the elastic part, and the elastic reset mechanism is suitable for pushing the long protrusion and the rotating shaft to rotate and reset to the original locking position after the locking piece is removed to release the rotating shaft lock, and the rotating shaft is suitable for rotating to rotate to different rotating shaft locking positions, wherein the rotating shaft is suitable for rotating from the original locking position to the first locking position to change the opening of the butterfly valve and adjust the control fluid flow.

[0010] According to another aspect of the present application, a fluid delivery pipeline is provided, wherein the fluid delivery pipeline is provided with the aforementioned two-way locking valve.

[0011] The two-way locking valve provided by the present application has the function of two-way locking the rotation of the rotating shaft, valve stem and disc plate, and also has the function of automatically resetting the rotating shaft after unlocking until the butterfly valve is fully opened / fully closed. Compared with the existing butterfly valve, the present application can withstand the impact of the fluid in the pipeline, lock the rotation of the butterfly valve, and ensure the stability and continuity of the valve opening after adjustment. There is no need for an external drive device with a locking function to overcome this defect. It is suitable for various valve stem driving methods and drive devices, and has the function of instantly closing the valve, which is conducive to the promotion and application of butterfly valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic structural diagram of a two-way locking valve according to an embodiment of the present application is shown;

[0013] Figure 2 A schematic structural diagram of a two-way locking valve according to an embodiment of the present application is shown;

[0014] Figure 3 A schematic diagram showing the structure of a butterfly valve according to an embodiment of the present application;

[0015] Figure 4 A diagram showing the connection structure of the rotating shaft, the elastic reset mechanism and the fixing part of an embodiment of the present application;

[0016] Figure 5 A diagram showing the connection structure of the rotating shaft, the locking portion and the fixing portion of an embodiment of the present application;

[0017] Figure 6 A diagram showing the connection structure of the rotating shaft, the locking portion and the fixing portion of an embodiment of the present application;

[0018] Figure 7 Show Figure 5 A partial structure enlarged view of the embodiment;

[0019] Figure 8 A schematic structural diagram of a fluid delivery pipeline according to an embodiment of the present application is shown.

[0020] Valve stem 110, disc plate 120, valve body 130, rotating shaft 200, limiting protrusion 210, long protrusion 220, spline groove 230, fixing part 300, bearing 310, locking member 410, first locking hole 411, pin 420, electromagnet 430, second reset elastic member 440, second slider 450, first reset elastic member 510, top pressing part 520, first slider 530, first pipe 610, second pipe 620. DETAILED DESCRIPTION

[0021] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0022] It should be understood that the terms "length", "width", "height", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0023] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0024] The present application provides a two-way locking valve, including a valve body, wherein the valve body includes a butterfly valve, a rotating shaft 200, a fixing portion 300, a locking portion and an elastic reset mechanism.

[0025] The rotating shaft 200 is coaxially fixedly connected to the valve stem 110 of the butterfly valve, and the rotating shaft 200 is suitable for rotating to drive the valve stem 110 to rotate to adjust the opening of the butterfly valve. The radial side wall of the rotating shaft 200 is provided with a long protrusion 220 and two or more limit protrusions 210, and the two or more limit protrusions 210 are arranged adjacent to each other;

[0026] The fixing part 300 is connected to the valve body 130 of the butterfly valve, and the fixing part 300 is provided with a connecting part;

[0027] The locking part includes a locking member 410, which is detachably connected to the connecting part. The locking member 410 installed on the connecting part is simultaneously located in the rotation track area of ​​the two limiting protrusions 210. The opposite ends of the locking member 410 installed on the connecting part are respectively in contact with the two limiting protrusions 210, so as to limit the rotation of the limiting protrusions 210 and lock the rotation of the rotating shaft 200 in both directions.

[0028] The two or more limit protrusions 210 form more than two rotating shaft locking positions. One of the rotating shaft locking positions is the original locking position. It should be noted that the two-way locking valve provided by the present application is provided with and only has one original locking position. When the rotating shaft 200 is located at the original locking position, the opening of the butterfly valve is unique, which is any one of fully open and fully closed, preferably fully closed. The other rotating shaft locking position is the first locking position. It should be noted that the two-way locking valve provided by the present application is provided with and only has one first locking position. When the rotating shaft 200 is located at the original locking position and at the first locking position, the opening of the butterfly valve is different. The present application does not limit the specific number of rotating shaft locking positions, which can be flexibly set according to the use requirements, at least two. The remaining rotating shaft locking positions can be distinguished by naming. Specifically: in addition to the original rotating shaft locking position and the first rotating shaft locking position, if there are other rotating shaft locking positions, they can be named as the second locking position, the third locking position, the fourth locking position..., and so on, no matter which locking position is, only one is set. The compression degree of the elastic part of the elastic reset mechanism may be different for different rotating shaft locking positions, and the elastic force is just enough to reset the rotating shaft 200 to the initial locking position and keep it from moving.

[0029] The rotating shaft 200 rotates around its axis. Relative to the original locking position, the rotating shaft 200 at the first locking position rotates at a preset angle S. The preset angle S specifically refers to the rotation angle along the Figure 5 In the clockwise direction shown, the angle through which the rotating shaft 200 rotates from the original locking position to the first locking position. According to the basic common sense of the rotation angle of the rotating shaft 200, we know that the value range of the preset angle S is 0°~360°. The preset angle S provided in the present application is 0°<S<180° or 180°<S<360°. S is not 0° and 360°, which means that these are two completely different rotating shaft locking positions. S is not 180°, which means that these two rotating shaft locking positions correspond to two completely different butterfly valve openings. The present application does not make specific restrictions on the specific value of the preset angle, and can be flexibly designed according to actual needs, as long as the rotating shaft 200 can be locked corresponding to two different butterfly valve openings, the disc plate 120 can be fixed, the opening adjustment can be realized, and the opening adjustment of the butterfly valve as a regulating valve and the fluid control function can be guaranteed.

[0030] It should also be noted that the two or more limit protrusions 210 form more than two rotating shaft locking positions, which means there are at least two rotating shaft locking positions, and at least the butterfly valve should be locked and fixed in two opening states. It does not mean that there are only two rotating shaft locking positions, and only the switching adjustment of the butterfly valve at two openings (for example, fully open and fully closed) can be realized. This application does not make specific restrictions on the butterfly valve openings corresponding to the two rotating shaft locking positions. As long as the butterfly valve opening corresponding to the original locking position is any one of fully open and fully closed, it can be fully open. At this time, the butterfly valve is a normally open valve, and the opening will only be reduced when needed. Whether the valve opening corresponding to the first locking position and the remaining locking positions is fully closed should also be flexibly set according to the specific fluid delivery requirements, which can be there or not. It can also be fully closed. At this time, the butterfly valve is a normally closed valve, and the valve will only be opened when needed to allow fluid to flow through. Whether the valve opening corresponding to the first locking position and the remaining locking positions is fully open should also be flexibly set according to the specific fluid delivery requirements.

[0031] When the rotating shaft 200 is located at the original locking position, the long protrusion 220 of the rotating shaft 200 does not press against the elastic part of the elastic reset mechanism, and the elastic part of the elastic reset mechanism is in a natural state. In addition, when the rotating shaft 200 is located at the original locking position, the opening of the butterfly valve is unique, which is either fully open or fully closed.

[0032] It should be noted that, “when the rotating shaft 200 is in the original locking position, the long protrusion 220 of the rotating shaft 200 does not press against the elastic part of the elastic reset mechanism”, which means that the long protrusion 220 abuts against the elastic reset mechanism, but at the abutting position, the elastic part of the elastic reset mechanism is just in a natural state. It can also be that there is a gap between the long protrusion 220 and the elastic reset mechanism, and they are not in contact or abutting. In other words, at this time, the long protrusion 220 of the rotating shaft 200 is far away from the elastic reset mechanism.

[0033] When the rotating shaft 200 is located at the first locking position, the long protrusion 220 of the rotating shaft 200 compresses the elastic part. The elastic reset mechanism is suitable for pushing the long protrusion 220 and the rotating shaft 200 to rotate and reset to the original locking position after the locking member 410 is removed to release the locking of the rotating shaft 200. The rotating shaft 200 is suitable for rotating to make the rotating shaft 200 rotate to different rotating shaft locking positions, wherein the rotating shaft 200 is suitable for rotating from the original locking position to the first locking position to change the opening of the butterfly valve and adjust the control fluid flow.

[0034] The present application does not limit the opening corresponding to the first locking position (and the remaining shaft locking positions, if any), and can be flexibly set according to actual needs. For example, four completely identical limiting protrusions 210 that are distributed circumferentially and located in the same radial plane of the shaft 200 correspond to four preset gaps, corresponding to four shaft locking positions, and the corresponding four butterfly valve openings are fully open, fully closed, fully open and fully closed. The limiting protrusions 210 that are also set on the eight references correspond to the butterfly valve openings of the eight shaft locking positions, which are fully open, half open (50% opening, the same below), fully closed, half open, fully open, half open, fully closed and half open. The limit protrusions 210 are also arranged on the sixteen parameters, and the butterfly valve openings corresponding to the sixteen shaft locking positions are fully open, 75% open, half open, 25% open, fully closed, 25% open, half open, 75% open, fully open, 75% open, half open, 25% open, fully closed, 25% open, half open, and 75% open.

[0035] In addition, as long as the limiting protrusion 210 can cooperate with the locking member 410 to complete the locking and unlocking of the rotating shaft 200, the common point of multiple limiting protrusions 210 is the structure of being abutted by the locking member 410 and rotated to push away the locking member 410. It is not necessary for each limiting protrusion 210 to maintain the same shape, size, specifications and structure, and they can be consistent or inconsistent.

[0036] Therefore, the plurality of limiting protrusions 210 may also be located in the same plane of the rotating shaft 200 in the radial direction, and the areas on the radial cross section of the rotating shaft 200 are different. Or there are components that are not located in the same plane of the rotating shaft 200 in the radial direction, but with the axial direction of the rotating shaft 200 as the projection direction and a plane in the radial direction of the rotating shaft 200 as the projection surface, and the corresponding projection areas are different. As long as the gap size between two adjacent limiting protrusions 210 is matched with the locking member 410, the space requirements required for the functions of abutting limiting, removing the connection, sliding, elastic extension, etc. are met. For example, only two limiting protrusions 210 are provided, and the two limiting protrusions 210 form a preset gap of two trumpet-shaped openings, forming two rotating shaft locking positions, preferably fully open and fully closed, and the two limiting parts themselves have large and small areas, but the two preset gaps are matched with the locking member 410. Three limiting protrusions 210, three limiting protrusions 210 form a preset gap of three trumpet-shaped openings, forming three rotating shaft locking positions, preferably fully open, half open and fully closed. In other words, the butterfly valve openings corresponding to multiple shaft locking positions are allowed to be repeated, or they may not be repeated. They can be flexibly set according to actual usage requirements and usage habits.

[0037] When the rotating shaft 200 is located at the original locking position, the elastic part of the elastic reset mechanism is in a natural state. When the rotating shaft 200 is located at the first locking position, the long protrusion 220 of the rotating shaft 200 compresses the elastic part. Except for the rotating shaft locking position corresponding to the valve opening consistent with the original locking position, when the rotating shaft 200 is located at any rotating shaft locking position, the elastic part will be compressed. The rotation angle of the rotating shaft 200 relative to the original locking position is different, and the compression and rebound reset elastic force of the elastic part are also different, but the rotating shaft 200 can be reset to the first locking position and then stop. After the rotating shaft 200 stops rotating, the locking member 410 is reinstalled to abut against the limit lock.

[0038] The present application automatically resets the rotating shaft 200 which is still in the first locking position (or any one of the second, third, etc. locking positions, if any) after being unlocked to the original locking position by setting an elastic reset mechanism. Conversely, if the butterfly valve opening needs to be adjusted, the rotating shaft 200 which is still in the original locking position after being unlocked needs to be rotated to the first locking position (or any one of the second, third, etc. locking positions, if any), and the rotating shaft 200 needs to be rotated until the rotating shaft 200 is rotated to the target rotating shaft locking position, and then the locking operation of the locking part can be performed.

[0039] The fixing part 300 and the valve body 130 of the butterfly valve provided in the present application are fixed on the pipeline and are relatively fixed. The rotating shaft 200 rotates relative to the fixing part 300, and drives the valve stem 110 and the disc plate 120 to rotate to adjust the opening of the butterfly valve. The locking member 410 is fixedly installed on the fixing part 300 and abuts against the two limit protrusions 210 on the rotating shaft 200 to perform bidirectional locking of the rotating shaft 200. The locking member 410 is located in the clockwise rotation track area of ​​one of the limit protrusions 210 and abuts against the limit, and is located in the counterclockwise rotation track area of ​​the other limit protrusion 210 and abuts against the limit. The two limiting protrusions 210 are fixed on the radial side wall of the rotating shaft 200. The clockwise and counterclockwise rotation of the rotating shaft 200 is limited by the locking member 410. As long as the connection between the locking member 410 and the fixing part 300 is stable and does not fall off, the rotating shaft 200 cannot rotate in the clockwise and counterclockwise directions, that is, the butterfly valve is locked in both directions and the opening is stable. When the locking of the rotating shaft 200 needs to be released and the butterfly valve opening needs to be adjusted, the locking member 410 can be removed from the connecting part, and the locking member 410 leaves the limiting protrusion 210 and no longer abuts against the limiting position. At this time, the compressed elastic part releases the elastic force to push the long protrusion 220 to rotate, driving the rotating shaft 200 to rotate and automatically reset to the original locking position.

[0040] The cooperation of the limiting protrusion 210 and the locking member 410 forms more than two rotating shaft locking positions corresponding to different butterfly valve openings, and the butterfly valve opening is switched by the elastic force of the elastic part pushing the reset and the rotation drive of the rotating shaft 200, and the locking part is used to lock and unlock the rotating shaft 200 at this rotating shaft locking position. Under the premise of ensuring the opening adjustment function of the butterfly valve as a regulating valve, compared with the existing butterfly valve type valve, it cannot self-lock after adjusting to the target opening, and either allows the fluid impact to rotate at will, and cannot ensure the accuracy, stability and controllability of the opening of the valve body 130, or it must add a driving device with a locking function, and use the driving device to self-lock its drive shaft, and the fixed connection between the drive shaft and the valve stem 110 to overcome this defect, resulting in each valve body 130 must be connected and configured with a driving device during use, and the driving device must have a locking function, cannot be removed, and cannot manually drive the valve stem 110 to rotate, which puts higher requirements on the driving method and driving device of the valve stem 110, resulting in high driving costs, which is not conducive to the promotion and application of butterfly valves.

[0041] The valve provided in the present application has a self-locking function, which can lock the rotating shaft 200 at the target opening, and ensure the accuracy, stability and controllability of the opening of the valve body 130. In addition, because this two-way locking valve has a self-locking function, it is no longer required that the driving device for adjusting the opening must have a self-locking function. It can have a self-locking function or not. In addition, during use, the driving device for adjusting the opening can be connected to drive the rotating shaft 200 to rotate, or the rotating shaft 200 can be manually gripped and rotated if the conveying scale and the required driving force allow. The present application does not specifically limit the structure of the holding part of the rotating shaft 200 in the possible way of manually driving the rotating shaft 200 to rotate, as long as the rotating shaft 200 can be rotated and the switching of the rotating shaft locking position is completed. The rotating shaft 200 can be provided with a handle, such as a handwheel handle, and a worm gear transmission can also be provided to manually rotate the worm wheel. In other words, the defects of "high requirements on the driving mode and driving device of the valve stem 110, and high driving cost" caused by the butterfly valve structure are overcome, and the options of the adaptable driving mode and driving device are more and the requirements are lower, which is conducive to the promotion and application of butterfly valves.

[0042] In a possible implementation, the elastic part of the elastic reset mechanism is a first reset elastic member 510, and the elastic reset mechanism includes a pressing portion 520 and a first reset elastic member 510; the first reset elastic member 510 is respectively connected to the side wall of the fixing portion 300 and the pressing portion 520 at both ends along its elastic direction, and the long protrusion 220 is suitable for rotating with the rotating shaft 200, and one end of its body protrudes out of the radial side wall of the rotating shaft 200 to press the pressing portion 520, so that the pressing portion 520 is displaced along the elastic direction of the first reset elastic member 510 to compress the first reset elastic member 510, and the first reset elastic member 510 is suitable for automatically resetting the pressing portion 520 that is displaced by the long protrusion 220 by utilizing elastic force after the locking member 410 is removed to release the locking of the rotating shaft 200, and the pressing force pushes the long protrusion 220 and the rotating shaft 200 to rotate.

[0043] Furthermore, the fixing portion 300 is provided with a reset sliding track, the side walls of which are located outside the rotation track area of ​​the long protrusion 220, the pressing portion 520 matches and is slidably connected to the reset sliding track, and the sliding direction of the pressing portion 520 is consistent with the elastic direction of the first reset elastic member 510.

[0044] Furthermore, the elastic reset mechanism further includes a first slider 530, which is in an elongated shape and has a body length direction that is consistent with the elastic direction of the first reset elastic member 510. The first reset elastic member 510 is a spring. The first slider 530 is sleeved in the spring of the first reset elastic member 510. A gap is provided between the first slider 530 and the inner wall of the spring structure of the first elastic member so that the two can slide relative to each other. One end of the body length of the first slider 530 is connected to the top pressing portion 520, and the other end of the body length passes through the housing of the fixing portion 300. The first slider 530 is slidably connected to the fixed part 300 and is slidably connected to the perforation in the shell structure of the fixed part 300. When the pressing part 520 is pressed and displaced by the limiting protrusion 210, the first reset elastic member 510 (the two elastic ends are respectively fixed to the pressing part 520 and the inner wall of the fixed part 300) is compressed, and the second slider 450 which is sleeved in the first reset elastic member 510 and connected to the pressing part 520 slides out of the shell, providing directionality and firmness for the retraction of the first reset elastic member 510 and the pressing part 520. The protruding end is closely related to the telescopic state of the first reset elastic member 510 and the operating state of the elastic reset mechanism and is easy to observe, and can serve as a state indicator inside the rotating shaft 200.

[0045] In a possible implementation, the pressing portion 520 is in the shape of a plate, also called a pressing plate, and the long protrusion 220, the pressing plate and the spring form a piston assembly with an automatic reset function.

[0046] In a possible implementation, the locking member 410 is detachably connected to the connecting portion through the pin 420, which is simple to operate, cheap and readily available. Specifically: the locking member 410 is provided with a first locking hole 411, the connecting portion side wall of the fixing portion 300 is provided with a locking groove or a second locking hole is provided, the first locking hole 411 and the locking groove (and / or the second locking hole) are both matched with the pin 420, and the first locking hole 411 and the locking groove (and / or the second locking hole) are arranged relative to each other for the pin 420 to be inserted, thereby fixing the locking member 410 and the connecting portion to limit the movement of the locking member 410. Therefore, once the pin 420 is inserted, no matter in which direction (clockwise or counterclockwise) the rotating shaft 200 drives the limiting protrusion 210 to rotate, it will not be able to rotate due to the physical obstruction of the locking part, thus realizing the locking of the rotating shaft 200 and the valve stem 110, and the disc plate 120 is fixed and will not rotate at will due to the impact force caused by the fluid, which can ensure the stability and continuity of the opening after adjustment, and truly realize the opening adjustment and valve opening and closing.

[0047] Furthermore, the locking part also includes an electromagnet 430, which is a device that generates electromagnetism when powered on. A conductive winding matching its power is wound around the outside of the iron core, and a ferromagnetic material is placed in the center of the winding as the iron core. After the conductive winding is powered on, the iron core is magnetized, and the magnetic pin 420 is displaced, so that the connection and disassembly state of the locking member 410 on the connection part are switched. The magnetic field strength can be controlled by controlling the current passed into the conductive winding to adapt to pins 420 of different specifications.

[0048] In a possible implementation, the connecting portion is provided with a second locking hole, and along the direction of gravity, the second locking hole is above the first locking hole 411, and the pin 420 naturally falls due to gravity, passing through the connecting portion and the locking portion for fixed connection. After the electromagnet 430 is energized, a magnetic force is generated, and the magnetic pin 420 moves upward until the pin 420 just exits the first locking hole 411, and the connection with the locking member 410 is released, at which time the connection relationship between the locking member 410 and the connecting portion is released. Furthermore, the connecting portion is provided with both a second locking hole and a locking groove opposite to the second locking hole, so that the connection relationship is more secure and can withstand greater forces without displacement.

[0049] In a possible implementation, the fixing portion 300 is provided with a locking driving device, and the driving end of the locking driving device is connected to the locking member 410 to drive the locking member to move, extend into or withdraw from the preset gap, and switch the state of locking or unlocking. The locking driving device can be an elastic member, such as the second resetting elastic member 440, preferably a spring, which drives the locking member to move by utilizing the elastic force of natural rebound when compressed; it can also be a motor linear driving member, as long as it can achieve extension to lock and retraction to unlock.

[0050] In a possible implementation, the fixing portion 300 is provided with a guiding sliding track matching the locking portion, the guiding sliding track is entirely located outside the rotation track area of ​​the limiting protrusion 210, and the fixing portion 300 is slidably connected to the guiding sliding track.

[0051] After adjusting the opening of the two-way locking valve, it is necessary to lock the rotating shaft 200 and the valve stem 110. At this time, the locking part can be slid to make it opposite to the connecting part, so as to connect and fix the locking member 410 to the connecting part. Subsequently, one end of the locking part passes through the guide sliding track and extends into the preset gap between two adjacent limiting protrusions 210, and is located in the rotation track area of ​​the two limiting protrusions 210. The opposite ends of the locking part extending into one end abut against the two limiting protrusions 210, limiting the movement of the limiting protrusions 210 and locking the rotation of the rotating shaft 200.

[0052] When the valve opening adjustment needs to be made and the locking relationship of the locking member 410 needs to be released, the connection between the locking member 410 and the connecting portion is removed, and the locking portion is slid to move away from the limiting protrusion 210 until the locking portion is outside the rotation track area of ​​the limiting protrusion 210, and the two opposite sides that were previously in contact no longer contact the limiting protrusion 210. At this time, under the action of the first reset elastic member 510, the rotating shaft 200, the limiting protrusion 210, the valve stem 110, and the disc plate 120 rotate freely, or under the self-rotation drive of the rotating shaft 200, each component rotates freely.

[0053] Furthermore, the fixing part 300 is also provided with a locking driving device, and the driving end of the locking driving device is connected to the locking member 410 to drive the sliding displacement of the locking member, and extend into or withdraw from the preset gap to switch the state of locking or unlocking. Furthermore, the locking driving device is a second resetting elastic member 440, and the connection method is as follows, and the guide sliding track is used to guide the locking member 410 to extend into locking and withdraw from unlocking, so as to prevent the oblique force from causing dislocation, causing fatigue aging of the elastic member, and shortening the service life of the two-way stop valve.

[0054] In a possible implementation, one end of the locking portion is adapted to pass through the guide sliding track and extend into the preset gap between two adjacent limiting protrusions 210, and the sliding track of the other end of the locking portion always passes through the end of the guide sliding track away from the limiting protrusion 210, passes through the side wall of the fixing portion 300, passes through the shell side wall of the fixing portion 300 and passes through its shell structure. The locking portion is held away from the end of the limiting protrusion 210, or a locking driving device connected to the locking member 410 is used to push the sliding displacement of the locking member 410, extend into or withdraw from the preset gap, and switch the state of locking or unlocking.

[0055] In a possible implementation, the locking portion further includes a second reset elastic member 440, which is preferably a spring; the two ends of the second reset elastic member 440 along its elastic direction are respectively connected to the side wall of the fixing portion 300 and the locking member 410, and when the second reset elastic member 440 is in a natural state, the end of the locking member 410 that is away from the second reset elastic member 440 is suitable for extending between two adjacent limiting protrusions 210 to abut against the limit, wherein the end of the limiting protrusion 210 close to the other limiting protrusion 210 is arc-shaped, and the preset gap between the two adjacent limiting protrusions 210 is a trumpet-shaped opening. The trumpet-shaped thinner end of the preset gap faces the rotating shaft 200, and the locking portion extends toward the thinner end through the thicker end of the preset gap, and the extending direction of the locking portion, the elastic direction of the second reset elastic member 440, and the trumpet-shaped center line of the preset gap are all consistent with the radial direction of the rotating shaft 200;

[0056] After the locking member 410 is removed from the connecting portion, the limiting protrusion 210 is adapted to rotate with the rotating shaft 200 to push the locking member 410 to move along the elastic direction of the second resetting elastic member 440, compressing the second resetting elastic member 440 so that the locking member 410 moves out of the rotation track area of ​​the limiting protrusion 210, releasing the locking of the rotating shaft 200, and the second resetting elastic member 440 is adapted to automatically reset the locking member 410 that is displaced by the limiting protrusion 210 by elastic force, and extend into the preset gap to abut against the limiting position. In other words:

[0057] When the locking part and the connecting part are in the connected state, the locking member 410 is fixed, and no matter whether the rotating shaft 200 and the limiting protrusion 210 have a clockwise or counterclockwise rotation tendency under the action of the fluid impact force, they cannot rotate due to the physical limiting positioning of the locking member 410, thereby achieving the locking of the rotating shaft 200 and the valve stem 110. The rotation thrust at this time = fluid impact force A + maximum elastic force B caused by the compression of the long protrusion 220 on the first reset elastic member 510 max , which is also the case when the pressing portion 520 is as far away from the rotating shaft 200 as possible and is at the maximum displacement position, the elastic force value B of the first resetting elastic member 510 is max At this time, the locking force = the static friction force C caused by the connection of the locking part. As long as the connection structure of the first reset elastic member 510 and the locking part on the connection part is reasonably selected and the maximum displacement distance of the pressing part 520 (the maximum value of the expansion and contraction amount that the first reset spring in the bidirectional locking valve can perform) is reasonably designed, the static friction force of the connection of the locking part is large enough, and the rotation thrust can be less than the locking force, and the locking shaft 200 and the valve stem 110 can be fixed and not rotated.

[0058] When the locking part and the connecting part are in the dismantled state and the fixing relationship is released, the locking member 410 still extends into the gap under the support of the second reset elastic member 440, but under the elastic force of the first reset elastic member 510, the long protrusion 220 drives the rotating shaft 200, and the rotating shaft 200 drives the limiting protrusion 210 to generate a rotation tendency and a certain driving force, pushing the locking member 410 to retract. Because the rotational thrust at this time is still equal to the fluid impact force A + the elastic force B released by the compression and rebound of the first reset elastic member min～max , and because the locking part and the connecting part lose their connection, the friction force is zero, and the strong force of friction caused by the locking part connection is lost. At this time, the locking force is D min～max The maximum value of the locking force is the maximum elastic force D caused by the compression of the second resetting elastic member 440 when the locking member 410 just exits the locking area (the rotation track area of ​​the limiting protrusion 210). max By properly selecting the first resetting elastic member 510 and the second resetting elastic member 440 and properly designing the maximum displacement distance of the pressing portion 520, it is possible to achieve that the rotation thrust is greater than the locking force, the limiting protrusion 210 is quickly pushed away from the locking portion, and the locking portion retracts and is no longer limited.

[0059] It should be noted that the reasonable selection of the connection structure of the first reset elastic member 510, the second reset elastic member 440 and the locking member on the connection part and the reasonable design of the maximum displacement distance of the pressing part 520 are to meet the conditions of firm locking and automatic reset after unlocking. Specifically: Taking into account the impact force of the fluid, when locking, A max+ B max <C, unlocking process A min +B min >D max , assuming A min is 0, then B min >D max In summary, the connection structure of the first resetting elastic member 510, the second resetting elastic member 440 and the locking portion on the connection portion is selected and tested to meet D max <B min <A max +B max<C. Moreover, when the pressing part 520 is as far away from the rotating shaft 200 as possible and is at the maximum displacement position, when the first reset elastic member 510 is compressed to the maximum, the elastic potential energy formed minus the part converted into the elastic potential energy of the second reset elastic member 440, minus the part of the friction loss between the limiting protrusion 210 and the outer edge of the locking part, and the rest of the energy loss of the rotation of the rotating shaft 200 (such as the conventional loss of friction at the bearing 310 and fluid impact, etc.), is just enough to provide the kinetic energy required for the rotation and reset of the rotating shaft 200. Depending on the specific conditions of the optional elastic member and the detachable connection structure, there can be a certain margin spacing between the locking member 410 installed on the connection part and the limiting protrusion 210, and the opening fluctuation can be within an acceptable range.

[0060] Further, the second reset elastic member 440 is preferably a spring, and a side of the locking portion away from the second reset elastic member 440 (also a side along the elastic direction of the second reset elastic member 440) is made of smooth and wear-resistant material, and the first direction is perpendicular to the elastic direction of the second reset elastic member 440. The opposite sides of the end of the locking portion away from the second reset elastic member 440 along the first direction are made of rough and wear-resistant materials with a large friction coefficient. Furthermore, the fixing portion 300 is provided with a guide sliding track matching the locking portion, and the fixing portion 300 is slidably connected to the guide sliding track. One end of the guide sliding track along the sliding direction of the locking portion is arranged toward the rotating shaft 200 and the limiting protrusion 210, and the second reset elastic member 440 is installed in the other end of the guide sliding track. When the second reset elastic member 440 is in a natural state (elastically compressed without being squeezed by the limiting protrusion 210), the end of the locking portion close to the second reset elastic member 440 is located in the guide sliding track, and the end of the locking portion away from the second reset elastic member 440 passes through the guide sliding track and penetrates into the preset gap between the two adjacent limiting protrusions 210, and is located in the rotation trajectory area of ​​the two limiting protrusions 210.

[0061] Furthermore, the locking part further includes a second slider 450, which is in an elongated shape and has a body length direction that is consistent with the elastic direction of the second reset elastic member 440. The second reset elastic member 440 is a spring, and the second slider 450 is sleeved in the spring of the second reset elastic member 440. A gap is provided between the second slider 450 and the inner wall of the spring of the second reset elastic member 440 so that the two can slide relative to each other. One end of the body length of the second slider 450 is connected to the locking member 410, and the other end of the body length passes through the housing of the fixing part 300, and the second slider 450 is slidably connected to the fixing part 300, and is slidably connected to the through hole in the housing structure of the fixing part 300. When the locking member 410 is displaced by the pressure of the limiting protrusion 210, the second reset elastic member 440 (the two ends of the elastic member are respectively fixed to the locking member 410 and the inner wall of the fixing portion 300) is compressed, and the second slider 450 located in the second reset elastic member 440 and connected to the pressing portion 520 slides out of the shell, thereby improving the directionality and firmness of the retraction of the second reset elastic member 440 and the pressing portion 520. The protruding end is closely related to the locking state of the rotating shaft 200 and is easy to observe, and can serve as a status indicator inside the rotating shaft 200.

[0062] In a possible implementation, regardless of whether the plurality of limit protrusions 210 are located in the same plane along the radial direction of the rotating shaft 200, the locking member 410 connected to the connection portion extends (elastically, slides or pushes) between the two limit protrusions 210 along the radial direction of the rotating shaft 200, and the two opposite ends are respectively in contact with the two limit protrusions 210. Furthermore, the two or more limit protrusions 210 are located on the same plane along the radial direction of the rotating shaft 200, and the force direction is unified to reduce the oblique force, reduce the adverse effects of the oblique force, such as fatigue aging of the elastic member, and have the effect of extending the service life of the valve. It also has the advantages of reducing the amount of consumables, simple structure, and easy manufacturing and repair.

[0063] Furthermore, the locking member 410 installed on the connecting portion is located between two adjacent limiting protrusions 210 and is also located within the rotation track area of ​​the two limiting protrusions 210, which is suitable for limiting the rotation of the limiting protrusions 210 and bidirectionally locking the rotation of the rotating shaft 200; on the rotating shaft 200, the preset gap between two adjacent limiting protrusions 210 matches the locking member 410, and there are more than two preset gaps, each of which corresponds to a locking position of the locking member 410 and a rotating shaft locking position of the rotating shaft 200. The rotation angle of the rotating shaft 200 corresponding to the two preset gaps is 90° or 270°, and the corresponding two butterfly valve openings are fully open and fully closed respectively. The butterfly valve openings corresponding to the remaining preset gaps are flexibly set according to actual use requirements.

[0064] It should be noted that the preset gap matches the locking member 410, which means that when the locking member 410 is connected, the two adjacent limiting protrusions 210 just abut against the opposite side walls of the locking member 410, respectively. Abutment means that the distance between the opposite side walls of the locking member 410 and the limiting protrusion 210 is small, which allows the smooth connection and disassembly of the locking member 410 and the smooth extension and withdrawal of the locking area, and does not cause a large displacement of the limiting protrusion 210 and a large rotation of the rotating shaft 200 due to the large distance. In this implementation, the locking area refers to the area partially or completely covered by the locking member 410 after being installed on the fixing part 300. This area is located between two adjacent limiting protrusions 210, and also includes the area formed by the partial rotation tracks of the two limiting protrusions 210.

[0065] Furthermore, the locking portion further includes a second resetting elastic member 440, and its connection method and the preset gap shape structure of the limiting protrusion 210, the connection structure and function of each component are referred to above.

[0066] In one possible implementation, when the rotating shaft 200 is located in the original locking position, the opening of the butterfly valve is one of fully open and fully closed; when the rotating shaft 200 is located in the first locking position, the opening of the butterfly valve is the other of fully open and fully closed. That is to say, the preset angle S is 90° or 270°. The rotating shaft 200 switches between the original locking position and the first locking position to achieve the full-open and full-close switching of the butterfly valve. Further, when the rotating shaft 200 is located in the original locking position, the opening of the butterfly valve is fully closed; when the rotating shaft 200 is located in the first locking position, the opening of the butterfly valve is fully open. Furthermore, the preset angle is 90°, such as Figure 6 shown.

[0067] In a possible implementation, the rotating shaft 200 is provided with two long protrusions 220, the length direction of the long protrusions 220 is consistent with the radial direction of the rotating shaft 200, and the two long protrusions 220 are respectively located at opposite ends of the rotating shaft 200 along its radial direction, and the number of elastic reset mechanisms is consistent with the number of long protrusions 220 and is arranged one by one. By adding elastic reset mechanisms, the total force of the first reset elastic member 510 is increased, and the reset is automatically performed as quickly as possible, and the direction of the force is kept consistent, which can reduce unnecessary energy consumption.

[0068] Each locking portion is provided with a locking member 410. The present application does not limit the specific number of locking portions, and there may be one locking portion, and correspondingly, there is only one locking member 410. There may also be more than two locking portions, as long as the locking positions of the corresponding rotating shaft 200 are the same after the two locking portions are installed on the fixing portion 300. The additional locking portions can increase the static friction between the locking member 410 and the connecting portion under the same connection structure design scheme, so that the detachable connection mode between the locking member 410 and the connecting portion has more options, lower requirements, and is more conducive to manufacturing.

[0069] In a possible implementation, the two-way locking valve also includes a (butterfly valve) opening adjustment drive device, which includes a worm wheel and a worm. The rotating shaft 200 is provided with a worm, which is coaxially connected to the rotating shaft 200, and the worm matches and meshes with the worm wheel. When the worm wheel is rotated, the worm meshed with it rotates accordingly, and because the worm is coaxially connected to the rotating shaft 200, the rotating shaft 200 also rotates accordingly, driving the valve stem 110 to rotate and adjust the butterfly valve opening. The worm wheel and the worm cooperate with each other to form all or part of the opening adjustment drive device, and the butterfly valve opening can be adjusted by holding the worm wheel and directly rotating manually. At this time, the worm wheel and the worm itself are the entire two-way locking valve adjustment drive device. A connecting rotation drive device can also be added to the worm wheel to drive the rotation of the worm wheel. At this time, the worm wheel and the worm are the drive end transmission assembly of the opening adjustment drive device and are part of it. The present application does not specifically limit the type of the driving device for rotation, as long as it can drive the worm gear to rotate and adjust the opening of the butterfly valve, a common rotary driver such as a motor can be selected. Preferably, the worm gear is provided with a handle, and the handle is preferably a hand wheel coaxially connected to the turbine. By holding the hand wheel and rotating it, the turbine, worm, rotating shaft 200 and valve stem 110 can be manually driven to rotate to adjust the opening of the butterfly valve.

[0070] Furthermore, the worm and the rotating shaft 200 are detachably connected, so that the opening adjustment driving device and the rotating shaft 200 can be flexibly connected and disassembled, which is convenient for the disassembly, replacement and maintenance of the components and has the effect of extending the service life of the overall two-way locking valve device.

[0071] In addition, two types of two-way locking valves including and not including the opening adjustment drive device can be used as two different flexible options. The user can only purchase one two-way locking valve including the adjustment drive device and two or more of the other type. The valve body and the opening adjustment drive device do not necessarily have to be set in the same number and one-to-one correspondence. The worm and the rotating shaft 200 are detachably connected, which realizes the flexible connection and disassembly of the adjustment drive device and the valve body. One adjustment drive device can adjust the butterfly valve opening of multiple valve bodies. The adjustment drive device can be purchased on demand, which can save costs.

[0072] In a possible implementation, the worm is detachably connected to the rotating shaft 200 through a spline. Specifically, the worm is plugged into the rotating shaft 200 through a spline, and a spline protrusion is provided along one axial end of the worm, and a spline groove 230 is provided at the axial end of the rotating shaft 200 away from the butterfly valve. The worm is plugged into the rotating shaft 200 through the spline protrusion groove. The installation direction of the two-way locking valve on the fluid delivery pipeline is adjusted so that the axial end of the rotating shaft 200 away from the butterfly valve faces upward. A flat key can also be provided at the connection between the worm and the rotating shaft 200, which is inserted into the connection between the two along the radial direction of the rotating shaft 200 to fix the connection between the two so that it is not easy to fall off axially. One end of the flat key passes through the connection. When dismantling, the flat key is first pulled out, and then the spline plug-in is cancelled.

[0073] In a possible implementation, the fixing part 300 is in the shape of a shell, the rotating shaft 200 rotates in the shell of the fixing part 300, the axial end of the rotating shaft 200 away from the butterfly valve passes through the shell of the fixing part 300, the elastic reset mechanism is installed inside the shell of the fixing part 300, and the locking member 410 is detachably connected to the inner wall of the fixing part 300. The electromagnet 430 can be located inside the shell of the fixing part 300 or outside, which can be flexibly selected.

[0074] In a possible implementation, the rotating shaft 200 includes a reset shaft, a locking shaft and a worm gear that are coaxially connected in sequence, and the axial end of the reset shaft that is away from the locking shaft is coaxially fixedly connected to the end of the valve stem 110 that passes through the valve body 130. The radial side wall of the reset shaft is provided with a long protrusion 220, and the radial side wall of the locking shaft is provided with more than two limit protrusions 210.

[0075] In a possible implementation, the butterfly valve includes a valve body 130, a disc plate 120 and a valve stem 110. The valve body 130 is a cylindrical pipe, the disc plate 120 is located inside the pipe of the valve body 130 and matches the valve body 130, one end of the valve stem 110 penetrates into the pipe of the valve body 130 and is connected to the disc plate 120, and the other end of the valve stem 110 penetrates out of the pipe of the valve body 130 and is coaxially connected to the rotating shaft 200. The valve stem 110 is provided with a bearing 310 in the through hole on the valve body 130, and the valve stem 110 is rotatably connected to the inner wall of the through hole through the bearing 310 of the through hole, so that the valve body 130 rotates and drives the disc plate 120 to rotate. The rotation axis 200 of the disc plate 120, the valve stem 110 and the rotating shaft 200 is perpendicular to the axial direction of the pipe of the valve body 130, and the disc plate 120 is axially symmetrical around its rotation axis 200.

[0076] According to another aspect of the present application, a fluid delivery pipeline is provided, and the fluid delivery pipeline is provided with the aforementioned two-way locking valve.

[0077] In a possible implementation, the fluid delivery pipeline is suitable for delivering a fluid such as a combustible gas, and the aforementioned two-way locking valve serves as an explosion-proof valve of the fluid delivery pipeline.

[0078] In a possible implementation, the fluid delivery pipeline includes a pipeline body and a two-way stop valve installed on the pipeline body. The two opening ends of the valve body 130 of the butterfly valve are connected to the pipeline body of the fluid delivery pipeline, and the fluid flows in the valve body 130. For example, the pipeline body is cut into two sections at the installation position of the two-way stop valve, and the first pipeline 610 and the second pipeline 620 are arranged from front to back along the fluid flow direction. The two axial ends of the valve body 130 are open, and the two opening ends of the valve body 130 are sealed and detachably connected to the output end of the first pipeline 610 and the input end of the second pipeline 620, respectively. For example, a (detachable) connecting flange with a coaxial sealing ring is added.

[0079] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A two-way locking valve, characterized in that: Used to be installed on a fluid delivery pipeline to instantly block the fluid in the fluid delivery pipeline, comprising: Butterfly valve, rotating shaft, fixing part, locking part and elastic reset mechanism; The rotating shaft is coaxially connected to the valve stem of the butterfly valve, a long protrusion and two or more limit protrusions are provided on the radial side wall of the rotating shaft, the fixing portion is connected to the valve body of the butterfly valve, the locking portion includes a locking member, the fixing portion is provided with a connecting portion to be detachably connected to the locking member, the locking member installed on the connecting portion is simultaneously located in the rotation track area of ​​the two limit protrusions, and the two opposite sides are respectively abutted against the two limit protrusions, which is suitable for limiting the rotation of the limit protrusions and bidirectionally locking the rotation of the rotating shaft; More than two limiting protrusions form more than two rotating shaft locking positions, wherein the two rotating shaft locking positions are respectively a first locking position and an original locking position, and the bidirectional locking valve is only provided with one of the original locking positions. When the rotating shaft is located at the original locking position, the elastic part of the elastic reset mechanism is in a natural state, and when the rotating shaft is located at the first locking position, the long protrusion of the rotating shaft compresses the elastic part, and the elastic reset mechanism is suitable for pushing the long protrusion and the rotating shaft to rotate and reset to the original locking position after the locking piece is removed to release the rotating shaft lock, and the rotating shaft is suitable for rotating to rotate to different rotating shaft locking positions, wherein the rotating shaft is suitable for rotating from the original locking position to the first locking position to change the opening of the butterfly valve and adjust the control fluid flow.

2. The two-way locking valve according to claim 1, characterized in that: The locking portion further includes a second resetting elastic member; The two ends of the second reset elastic member along its elastic direction are respectively connected to the side wall of the fixing portion and the locking member, and when the second reset elastic member is in a natural state, the end of the locking member away from the second reset elastic member is suitable for extending into between two adjacent limiting protrusions to abut against the limiting position, wherein the end of the limiting protrusion close to the other limiting protrusion is arc-shaped, and the preset gap between the two adjacent limiting protrusions is trumpet-shaped, and the trumpet-shaped thinner end of the preset gap faces the rotating shaft; After the locking piece is removed from the connecting portion, the limiting protrusion is suitable for following the rotation of the rotating shaft to press and push the locking piece to move along the elastic direction of the second reset elastic piece, compressing the second reset elastic piece so that the locking piece moves out of the rotation track area of ​​the limiting protrusion, thereby releasing the lock of the rotating shaft, and the second reset elastic piece is suitable for using elastic force to automatically reset the locking piece that is displaced by the limiting protrusion, and extend into the preset gap to abut against the limit.

3. The two-way locking valve according to claim 1, characterized in that: The locking member is detachably connected to the connecting portion via a pin, and the locking portion further comprises an electromagnet, which is suitable for magnetically attracting the displacement pin to connect and disassemble the locking member at the connecting portion.

4. The two-way locking valve according to claim 1, characterized in that: The two or more limiting protrusions are located on the same plane of the rotating shaft along its radial direction.

5. The two-way locking valve according to claim 1, characterized in that: When the rotating shaft is located at the original locking position, the opening of the butterfly valve is fully closed; when the rotating shaft is located at the first locking position, the opening of the butterfly valve is fully open.

6. The two-way locking valve according to claim 1, characterized in that: The elastic part of the elastic reset mechanism is a first reset elastic member, and the elastic reset mechanism includes a pressing part and a first reset elastic member; The two ends of the first reset elastic member along its elastic direction are respectively connected to the side wall of the fixed part and the pressing part, and the long protrusion is suitable for following the rotation of the rotating shaft, and one end of its body protrudes out of the radial side wall of the rotating shaft to press the pressing part, so that the pressing part is displaced along the elastic direction of the first reset elastic member to compress the first reset elastic member, and the first reset elastic member is suitable for automatically resetting the pressing part that is displaced by the long protrusion by utilizing elastic force after the locking member is removed to release the rotating shaft lock, and the pressing force pushes the long protrusion and the rotating shaft to rotate.

7. The two-way locking valve according to claim 6, characterized in that: The fixing portion is provided with a reset sliding track, and the side walls of the reset sliding track are all located outside the rotation track area of ​​the long protrusion. The pressing portion matches and is slidably connected to the reset sliding track, and the sliding direction of the pressing portion is consistent with the elastic direction of the first reset elastic member.

8. The two-way locking valve according to claim 1, characterized in that: It also includes a drive device for adjusting the opening, which is connected to the rotating shaft and is used to drive the rotating shaft to rotate to different rotating shaft locking positions.

9. The two-way locking valve according to claim 8, characterized in that: The opening adjustment driving device is detachably connected to the rotating shaft.

10. A fluid delivery pipeline, characterized in that: The fluid delivery pipeline is provided with a two-way locking valve as described in any one of claims 1-9.

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