Two-way valve based on push-push structure, and fluid charging and discharging system

Abstract

A two-way valve (8) based on a push-push structure, comprising a valve body (1), a valve core (2), a limiting assembly (3), and a reset assembly (4). The valve core (2) is located in a valve cavity in the valve body (1); the limiting assembly (3) is connected to the valve core (2) and the valve body (1); the reset assembly (4) is connected to a movable component in the valve core (2) and the valve body (1); the described components form a push-push structure; under the action of an external force and the reset assembly (4), corresponding structures of the valve body (1) and the valve core (2) form predetermined fitnesses at different positions, the predetermined fitnesses respectively corresponding to states of the two-way valve such as a two-way sealing state, a forward conduction state, and a reverse conduction state. The two-way valve has a simple structure, involves low costs, and has a wide range of application. In addition, the present invention also relates to a fluid charging and discharging system having the two-way valve.

Description

A two-way valve and fluid charging and discharging system based on push-push structure Technical Field

[0001] The present invention relates to the field of reversing control valves, in particular to a two-way valve based on a push-push structure and a fluid charging and discharging system containing the two-way valve. Background Art

[0002] Currently, the two-way valves commonly found on the market that can actively control the direction of conduction are mainly controlled by electromagnetic, mechanical, manual, and pressure types. The electromagnetic and mechanical types can be remotely controlled, but their control structures are located outside the main channel of the two-way valve and require additional pipeline structures to provide power, resulting in complex structures and high costs. The manual type does not require the aforementioned pipeline structure to provide power, but can only be placed in locations within human reach, limiting its application scenarios. In addition, manual operation is slow and multiple control structures cannot be operated simultaneously, resulting in low efficiency and a poor user experience. The pressure type does not have the aforementioned problems, but it has many restrictions on the pressure magnitude, difference, and changes at both ends of the two-way valve. In particular, it cannot be used when the pressure difference between the two ends varies greatly, and its application scenarios are limited. Summary of the Invention

[0003] In order to overcome the problems existing in the existing two-way valve in the above background technology, the present invention provides a two-way valve based on a push-push structure and a fluid charging and discharging system including the two-way valve.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A two-way valve 8 based on a push-push structure comprises a valve body 1, a valve core 2, a limit assembly 3, and a reset assembly 4.

[0006] The valve body 1 has a through valve cavity; the valve core 2 is located in the valve cavity, and the movable parts of the valve core 2 can slide along the inner wall of the valve cavity; the limit assembly 3 includes a sliding assembly 31 and a guide groove group 32. The limit assembly 3 is located between the valve body 1 and the valve core 2 and is connected to the two. The reset assembly 4 includes one or more elastic members, and the ends of the elastic members are respectively connected to the movable parts of the valve core 2 and the valve body 1. The above components together constitute a common push-push structure, which is also commonly referred to as a push-push structure. Under the action of external force and the reset assembly 4, the movable parts of the valve core 2 can slide in the valve cavity and be restricted by the limit assembly 3 to multiple predetermined positions in the valve cavity. The specific structures on the valve body 1 and the valve core 2 form different predetermined fits at different predetermined positions. The different predetermined fits correspond to the sealing, forward conduction, reverse conduction and other states of the two-way valve 8.

[0007] In one embodiment of the present invention, the limiting assembly 3 includes a sliding assembly 31 and a guide groove set 32 ​​.

[0008] Furthermore, the sliding assembly 31 includes an elastic structure 311, a sliding end 312, and a fixed end 313. Preferably, the elastic structure 311 is a spring, and the sliding end 312 and the fixed end 313 are the two ends of a cylinder. The fixed end 313 has a blind hole, and the elastic structure 311 is inserted into the blind hole. Under the action of the elastic structure 311, the sliding end 312 is inserted into and pressed against the bottom surface of the guide groove group 32, and the sliding assembly 31 does not deform in the axial direction of the valve cavity. Preferably, the fixed end 313 is inserted into the fixed structure 5 located on the component connected to it together with the elastic structure 311, and the fixed end 313 cannot move in other directions of the fixed structure 5 except the direction of insertion. Preferably, the fixed structure 5 is a blind hole. Preferably, there is only one sliding assembly 31 and corresponding fixed structure 5.

[0009] Furthermore, the guide groove group 32 includes a plurality of guide grooves 321, the number of which is an even number and not less than four. The guide grooves 321 are connected and connected in adjacent order, each guide groove 321 being connected to two other guide grooves 321, and any two guide grooves 321 are connected only once; the bottom surface of the guide groove 321 is smooth, and the bottom surface at the junction of two guide grooves 321 is stepped due to different groove depths, and the vertical surface of the step does not point to the same guide groove 321 at the same time; the end of the guide groove 321 closest to the vertical surface of the step is the head end, and the end of the guide groove 321 closest to the plane of the step is the tail end. The groove depths of the head and tail ends of the guide groove 321 are different and the transition is smooth. The direction of the line connecting the head and tail ends of the guide groove 321 is the guide direction of the guide groove 321, and the guide directions of any two connected guide grooves 321 are opposite along the axial direction of the valve cavity.

[0010] Furthermore, under the action of external force, the sliding end 312 of the sliding assembly 31 can slide along the guide groove 321 . When the sliding end 312 slides from the plane of the step to the vertical surface of the step, it enters the next guide groove 321 .

[0011] Furthermore, the number, length, position, shape, groove depth and the position of the connection on the guide groove 321 of the guide groove 321 are all matched with the different predetermined matches of the valve body 1 and the valve core 2.

[0012] Preferably, the guide grooves 321 are arranged in groups of four, and six identical groups are arranged along the circumference of the connected parts, with the groups connected end to end and connected.

[0013] In one embodiment of the present invention, the valve core 2 includes a one-way valve 21 .

[0014] The one-way valve 21 is conducted along the axis of the valve cavity. The outside of the one-way valve 21 is arranged with a sealing structure 211, a fluid inlet 212, and a fluid outlet 213 in sequence along the conduction direction. The inside of the one-way valve 21 has a one-way conducting channel connecting the fluid inlet 212 and the fluid outlet 213.

[0015] Optionally, the sealing structure 211 is directly protruded outward from the outer side surface of the one-way valve 21 and is distributed along the circumference, and its shape matches the corresponding sealing structure 121 on the inner wall of the valve body 1.

[0016] Optionally, the sealing structure 211 may also be a sealing ring embedded in the outer side of the one-way valve 21 , and its material includes but is not limited to rubber, silicone, polymer, metal, ceramic, etc., and its shape should match the corresponding sealing structure 121 on the inner wall of the valve body 1 .

[0017] Furthermore, the fluid inlet 212 is located on the outer side of the one-way valve 21. The position of the fluid outlet 213, when the aforementioned conditions are met, also needs to be directly connected to the valve cavity.

[0018] Furthermore, the reset assembly 4 includes an elastic member 41. The ends of the elastic member 41 are connected to the one-way valve 21 and the valve body 1, respectively. The connection can be fixed or movable. When the one-way valve 21 is located in the valve cavity, the elastic member 41 applies a force in the same direction as the one-way valve 21, while simultaneously applying a force in the opposite direction to the valve body 1. The force is at least sufficient to propel the one-way valve 21 to slide within the valve cavity when not subject to other external forces. Preferably, the elastic member 41 is a spring.

[0019] Furthermore, the sliding assembly 31 and the guide groove assembly 32 of the limit assembly 3 are respectively connected to the one-way valve 21 and the valve body 1, and the corresponding relationship of the connections can be interchanged. The connection between the guide groove assembly 32 and the one-way valve 21 or the valve body 1 is a fixed connection, preferably, the fixed connection is inlay.

[0020] Furthermore, the inner wall of the valve body 1 is divided into a conducting section 11 and a sealing section 12 in sequence along the conducting direction of the one-way valve 21 .

[0021] Furthermore, the outer side surface of the one-way valve 21 fits tightly with the inner wall of the sealing section 12. The sealing section 12 is provided with a sealing structure 121. The sealing structure 121 and the sealing structure 211 form a predetermined match. When the two are connected, an annular seal is formed. After the annular seal is formed, the valve cavities on both sides thereof are not conductive, and at this time, the two-way valve 8 is not conductive.

[0022] Furthermore, a groove-shaped conducting structure 111 is provided on the inner wall of the conducting section 11, and the number of the groove-shaped conducting structures 111 is not less than 1. When the sealing structure 211 and the fluid inlet 212 of the one-way valve 21 are located within the range of the conducting section 11 under the action of the limiting component 3, the fluid inlet 212 and the groove-shaped conducting structure 111 form a predetermined match, and the fluid inlet 212 is connected to the valve cavity in the conducting section 11 through the groove-shaped conducting structure 111. At this time, the two-way valve 8 is connected along the direction of conduction of the one-way valve 21.

[0023] Furthermore, when the pressure of the fluid on the fluid outlet 213 side of the one-way valve 21 is greater than that on the fluid inlet 212 side, the one-way conducting channel in the one-way valve 21 is closed. When the force difference on both sides is large enough, the one-way valve 21 moves in the direction of the conducting section 11, and the fluid outlet 213 of the one-way valve 21 moves to within the range of the conducting section 11. The one-way valve 21 and the valve body 1 form a predetermined fit, and the valve cavities on both sides of the one-way valve 21 are bidirectionally conducted through the groove-shaped conducting structure 111. Due to the existence of the pressure difference, the conducting direction of the two-way valve 8 is opposite to the conducting direction of the one-way valve 21.

[0024] In one embodiment of the present invention, the valve core 2 includes a one-way valve 21 and a blocking body 22 .

[0025] The one-way valve 21 is axially conductive along the valve cavity. The fluid inlet 212 and the fluid outlet 213 of the one-way valve 21 are respectively located on the bottom surfaces at both ends of the one-way valve 21 and are directly connected to the valve cavity. There is a one-way conductive channel connecting the fluid inlet 212 and the fluid outlet 213 inside the one-way valve 21.

[0026] Optionally, a fixed connection 222 is formed between the sealing body 22 and the valve body 1, and the fixed connection 222 does not form a seal on the valve cavity. The sealing body 22 is located on one side of the fluid inlet 212 of the one-way valve 21 and has a cylindrical protrusion 221 on the side facing the one-way valve 21. The cylindrical protrusion 221 is aligned with the fluid inlet 212 of the one-way valve 21 along the axial direction of the valve cavity. The structure of the cylindrical protrusion 221 cooperates with the fluid inlet 212 of the one-way valve 21 and the channel therein. The cylindrical protrusion 221 and the fluid inlet 212 of the one-way valve 21 form a predetermined fit. The cylindrical protrusion 221 can be inserted into the fluid inlet 212 of the one-way valve 21 to a predetermined depth and seal it.

[0027] Furthermore, the reset assembly 4 includes an elastic member 41. The ends of the elastic member 41 are connected to the one-way valve 21 and the valve body 1, respectively. The connection can be fixed or movable. When the one-way valve 21 is located in the valve cavity, the elastic member 41 applies a force in the same direction as the one-way valve 21, while simultaneously applying a force in the opposite direction to the valve body 1. The force is at least sufficient to enable the one-way valve 21 to slide within the valve cavity when not subject to other external forces. Preferably, the elastic member 41 is a spring.

[0028] Furthermore, the sliding assembly 31 and the guide groove assembly 32 of the limit assembly 3 are respectively connected to the one-way valve 21 and the valve body 1, and the corresponding relationship of the connections can be interchanged. The connection between the guide groove assembly 32 and the one-way valve 21 or the valve body 1 is a fixed connection, preferably, the fixed connection is inlay.

[0029] Furthermore, the inner wall of the valve body 1 is sequentially divided into a conducting section 11 and a sealing section 12 along the conduction direction of the one-way valve 21. The outer side surface of the one-way valve 21 is tightly attached to the inner wall of the sealing section 12, sealing the valve cavity. When the one-way valve 21 enters the sealing section 12, the two form a predetermined fit, and the valve cavity is closed in the direction opposite to the conduction direction of the one-way valve 21.

[0030] Furthermore, the inner wall of the conducting section 11 is provided with groove-shaped conducting structures 111, and the number of groove-shaped conducting structures 111 is no less than one. When the pressure of the fluid on the side of the fluid outlet 213 of the one-way valve 21 is greater than that on the side of the fluid inlet 212, the one-way conducting channel within the one-way valve 21 is closed. When the force difference between the two sides is sufficiently large, the one-way valve 21 moves toward the conducting section 11, and the fluid outlet 213 of the one-way valve 21 moves into the range of the conducting section 11. The one-way valve 21 and the valve body 1 form a predetermined fit, and the valve cavities on both sides of the one-way valve 21 are bidirectionally connected through the groove-shaped conducting structures 111. Due to the pressure difference, the conducting direction of the two-way valve 8 is opposite to the conducting direction of the one-way valve 21.

[0031] Furthermore, when the cylindrical protrusion 221 is inserted into the fluid inlet 212 and seals it, and the one-way valve 21 partially enters the sealing section 12 and seals it, the two-way valve 8 is not conductive.

[0032] Furthermore, when the columnar protrusion 221 is separated from the fluid inlet 212 due to the action of the limiting assembly 3 and the one-way valve 21 completely enters the sealing section 12 and seals it, the two-way valve 8 is opened along the direction of the one-way valve 21.

[0033] Optionally, the blocking body 22 is movably connected to the valve body 1, and the blocking body 22 does not seal the valve cavity. The blocking body 22 is located on the side of the fluid inlet 212 of the one-way valve 21. The structure of the side of the blocking body 22 facing the one-way valve 21 forms a predetermined match with the structure of the bottom surface where the fluid inlet 212 of the one-way valve 21 is located. When the blocking body 22 and the one-way valve 21 are fitted together under the action of an external force, the fluid inlet 212 of the one-way valve 21 can be sealed. Preferably, the side of the blocking body 22 facing the one-way valve 21 has a protruding columnar body that cooperates with the fluid inlet 212. Optionally, when the aperture of the valve cavity is large, one end or both ends of the blocking body 22 may have a support body 223 extending axially, and the support body 223 will not affect the aforementioned function of the blocking body 22.

[0034] Furthermore, the reset assembly 4 includes a first elastic member 41 and a second elastic member 42. The first elastic member 41 has two ends respectively connected to the blocking body 22 and the valve body 1, and the connection can be fixed or movable. The second elastic member 42 has two ends respectively connected to the one-way valve 21 and the valve body 1, and preferably, the connection is fixed. When the blocking body 22 is located in the valve cavity, the elastic member 41 applies a force on the blocking body 22 in the same direction as the one-way valve 21 conduction direction, and at the same time applies a force on the valve body 1 in the opposite direction, and the magnitude of the force is at least sufficient to push the blocking body 22 to slide within the valve cavity when not affected by other external forces. When the one-way valve 21 is located in the valve cavity, the elastic member 42 applies a force on the one-way valve 21 in the same direction as the one-way valve 21 conduction direction, and at the same time applies a force on the valve body 1 in the opposite direction, and the magnitude of the force is at least sufficient to push the one-way valve 21 to slide within the valve cavity when not affected by other external forces. Preferably, both the first elastic member 41 and the second elastic member 42 are springs.

[0035] Furthermore, the sliding assembly 31 and the guide groove group 32 of the limit assembly 3 are connected to the blocking body 22 and the valve body 1 respectively, and the corresponding relationship of the connections can be interchanged. The connection between the guide groove group 32 and the blocking body 22 or the valve body 1 is a fixed connection, preferably, the fixed connection is inlay.

[0036] Furthermore, the inner wall of the valve body 1 is divided into a conducting section 11 and a sealing section 12 in sequence along the conducting direction of the one-way valve 21. The outer side surface of the one-way valve 21 is tightly fitted with the inner wall of the sealing section 12 and seals the valve cavity. When the one-way valve 21 enters the sealing section 12, the two form a predetermined fit, and the valve cavity does not conduct in the direction opposite to the conducting direction of the one-way valve 21.

[0037] Furthermore, a groove-shaped conducting structure 111 is provided on the inner wall of the conducting section 11, and the number of the groove-shaped conducting structures 111 is not less than 1. When the pressure of the fluid on the fluid outlet 213 side of the one-way valve 21 is greater than that on the fluid inlet 212 side, the one-way conducting channel in the one-way valve 21 is closed. When the force difference on both sides is large enough, the one-way valve 21 is close to the blocking body 22, and the two move together in the direction of the conducting section 11. The fluid outlet 213 of the one-way valve 21 moves to the range of the conducting section 11. The one-way valve 21 and the valve body 1 form a predetermined fit. The valve cavities on both sides of the one-way valve 21 and the blocking body 22 are bidirectionally conducted through the groove-shaped conducting structure 111. Due to the existence of the pressure difference, the conducting direction of the two-way valve 8 is opposite to the conducting direction of the one-way valve 21.

[0038] Furthermore, when the blocking body 22 is in close contact with the one-way valve 21 and seals it, and at the same time the one-way valve 21 enters the sealing section 12 and seals it, the two-way valve 8 is not conductive.

[0039] Furthermore, when the blocking body 22 is separated from the one-way valve 21 due to the action of the limiting assembly 3 and the one-way valve 21 enters the sealing section 12 and seals it, the two-way valve 8 is opened along the direction in which the one-way valve 21 is opened.

[0040] Optionally, when the valve cavity aperture is relatively large, one end or both ends of the one-way valve 21 may have a support body 214 extending axially.

[0041] The present invention further proposes a fluid charging and discharging system containing the two-way valve 8 , comprising a control device 6 , a pipeline 7 , a two-way valve 8 , and a fluid storage chamber 9 .

[0042] Furthermore, the control device 6 can apply the required pressure to the fluid in the pipeline 7 when needed, forming a pressure difference on both sides of the two-way valve 8 to promote the movement of the movable parts in the valve core 2, and can also provide reverse pressure when needed to make the fluid flow out of the fluid storage chamber 9.

[0043] Furthermore, one end of the two-way valve 8 directed by the conducting direction of the one-way valve 21 therein is connected to the control device 6 through the pipeline 7 .

[0044] Optionally, the other end of the two-way valve 8 may be directly connected to the fluid storage chamber 9 , or may be connected to the fluid storage chamber 9 through another section of the pipeline 7 .

[0045] Furthermore, there is at least one fluid storage chamber 9 , and each fluid storage chamber 9 is connected to at least one two-way valve 8 .

[0046] Furthermore, all the two-way valves 8 are connected to the control device 6 in parallel via the pipeline 7 .

[0047] Optionally, different fluid storage chambers 9 may be fixedly connected, movably connected, or not connected.

[0048] The advantages of the technical solution provided by the present invention are:

[0049] 1. The slidable one-way valve 21 and the fluid in the pipeline 7 are used to achieve remote transmission of the force provided by the control device 6.

[0050] 2. The push-push structure not only allows the one-way valve 21 to be stably limited to different positions in the valve cavity, but also allows its conduction state to be actively changed through the force transmission of the control device 6.

[0051] 3. The two-way valve 8 has a simple structure, low cost, low failure rate and wide application range.

[0052] 4. By utilizing the parallel connection of the two-way valves 8, the control device 6 can centrally control the two-way valves 8, thereby improving the independence of the fluid storage chamber 9, realizing the personalized appearance, modular functional design and application capabilities of the fluid storage chamber 9, and enhancing the product's anti-destruction and repairability. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. In addition, the drawings are for schematic illustration only and are not drawn to their original size.

[0054] Figure 1 is a side view of the valve body and a schematic diagram of the AA cross-section direction;

[0055] FIG2 is a cross-sectional view of the valve body in the direction AA in an embodiment of a valve core including a one-way valve;

[0056] FIG3 is a three-dimensional schematic diagram of the internal structure of an embodiment in which the valve core includes a one-way valve;

[0057] FIG4 is a three-dimensional exploded view of the internal structure of an embodiment in which the valve core includes a one-way valve;

[0058] FIG5 is a cross-sectional view of the valve body in the direction AA in an embodiment in which the valve core includes a one-way valve and a fixed blocking body;

[0059] FIG6 is a three-dimensional schematic diagram of the internal structure of an embodiment in which the valve core includes a one-way valve and a fixed blocking body;

[0060] FIG7 is a three-dimensional exploded view of the internal structure of an embodiment of a valve core including a one-way valve and a fixed blocking body;

[0061] FIG8 is a cross-sectional view of the valve body in the direction AA in an embodiment in which the valve core includes a one-way valve and a movable blocking body;

[0062] FIG9 is a three-dimensional schematic diagram of the internal structure of an embodiment in which the valve core includes a one-way valve and a movable blocking body;

[0063] FIG10 is a three-dimensional exploded view of the internal structure of an embodiment of a valve core including a one-way valve and a movable blocking body;

[0064] FIG11 is a partially cutaway enlarged three-dimensional schematic diagram of an embodiment of a sliding assembly;

[0065] FIG12 is a schematic diagram of an embodiment of a fluid charging and discharging system.

[0066] Reference numerals:

[0067] 1. Valve body; 11. Conducting section; 111. Conducting structure; 12. Sealing section; 121. Sealing structure; 2. Valve core; 21. One-way valve; 211. Sealing structure; 212. Fluid inlet; 213. Fluid outlet; 214. Support body; 22. Blocking body; 221. Columnar protrusion; 222. Fixed connection; 223. Support body; 3. Limiting assembly; 31. Sliding assembly; 311. Elastic structure; 312. Sliding end; 313. Fixed end; 5. Fixed structure; 32. Guide groove group; 321. Guide groove; 4. Reset assembly; 41. First elastic member; 42. Second elastic member; 6. Control device; 7. Pipeline; 8. Two-way valve; 9. Fluid storage chamber. DETAILED DESCRIPTION

[0068] In order to better understand the above technical solution and make the objectives, technical solutions and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods, so that technicians in this technical field can understand the present invention.

[0069] Obviously, the described embodiments are only some of the embodiments of the present invention. The present invention can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0070] Based on the embodiments of the present invention, equivalent structural transformations, replacements, improvements made by those skilled in the art without making any creative work using the contents of the present invention's description and drawings, or direct or indirect application in other related technical fields, are all included in the patent protection scope of the present invention without departing from the spirit and principle of the present invention.

[0071] Two-way valve embodiment 1:

[0072] As shown in Figure 1, the valve body 1 of the two-way valve 8 is generally cylindrical. When the valve body 1 is cut open along the AA section (see Figure 1), the inner wall of the valve body 1 (see Figure 2) can be seen to be divided into a conducting section 11 and a sealing section 12. The conducting section 11 includes one or more groove-shaped conducting structures 111 extending through the conducting section and arranged in parallel along the circumference of the inner wall of the valve body 1. Those skilled in the art may determine the specific number of conducting structures 111 based on actual circumstances, and all such determinations are within the scope of patent protection of this invention. The sealing section 12 is embedded with a guide groove group 32. The guide groove group 32 consists of four guide grooves 321 as a basic unit, with at least one basic unit distributed circumferentially along the inner wall of the valve body 1. Where the conducting section 11 and the sealing section 12 meet is a sealing structure 121. The sealing structure 121 is stepped and distributed circumferentially along the inner wall of the valve body 1.

[0073] Arranged from left to right within the valve cavity are the reset assembly 4, the valve core 2, and the sliding assembly 31 positioned thereon (see Figures 3 and 4). The reset assembly 4 comprises a first elastic member 41, which is a spring. The left end of the valve body 1 has a circumferentially inward protrusion. The left end of the first elastic member 41 presses against the inner side of this protrusion, pushing it leftward. The right end of the first elastic member 41 presses against the valve core 2, pushing it rightward. The valve core 2 comprises a one-way valve 21. The left end of the side of the one-way valve 21 has a circumferentially outward stepped protrusion, which serves as a sealing structure 211. The right side of the sealing structure 211 mates with the sealing structure 121, ensuring a tight fit and sealing the valve cavity. To the right of the sealing structure 211 is a fluid inlet 212, which communicates with a fluid outlet 213 located at the right end of the one-way valve 21 via a one-way channel within the one-way valve 21. It is well known that there are many ways to implement the one-way conduction structure inside the one-way valve. Those skilled in the art can choose any one of them according to actual conditions, and all of them are included in the scope of patent protection of the present invention. The fluid outlet 213 is directly connected to the valve cavity. There are two support bodies 214 at the right end of the one-way valve 21, and the fixed structure 5 is a blind hole located on one of the support bodies 214. The elastic structure 311 and the fixed end 313 of the sliding assembly 31 are inserted into the fixed structure 5, and the sliding end 312 is inserted into the guide groove 321 and is tightly attached to the bottom surface of the guide groove 321 under the push of the elastic structure 311. The outer diameter of the sliding end 312 matches the width of the guide groove 321, and it will not swing to the sides of the guide groove 321 when sliding along the guide groove 321. The specific width can be set by those skilled in the art according to actual conditions, and all of them are included in the scope of patent protection of the present invention.

[0074] Sliding assembly 31 consists of a cylinder with a blind hole at one end (see Figure 11) and an elastic structure 311. Elastic structure 311 is a spring, with a fixed end 313 located at the end with the hole, and a sliding end 312 located at the end without the hole. Inserted into the blind hole, elastic structure 311 simultaneously applies forces in opposite directions to the bottom surface of fixed structure 5 and sliding end 312.

[0075] Specific working principle:

[0076] The valve body 1 , the valve core 2 , the limit assembly 3 , and the reset assembly 4 together constitute a push-push structure, which is also commonly referred to as a push-push structure.

[0077] As can be seen from the figure, the left side of the one-way valve 21 is subjected to the combined force of the fluid and the first elastic member 41 , and the right side is subjected to the pressure of the fluid.

[0078] As is well known, the moving parts within the two-way valve 8 are also subject to forces such as gravity and friction during their movement. This description, which only explains the operating principle, does not consider these factors. Those skilled in the art may adjust the specific parameters of the fluid pressure, first elastic member 41, and elastic structure 311 based on actual conditions and the influence of forces such as gravity and friction, and all such factors are within the scope of patent protection of this invention.

[0079] In the first state, the two-way valve 8 is not conductive in both directions.

[0080] Referring to Figures 2, 3, and 4, when the pressure on the right side of the one-way valve 21 is less than the combined force on the left side, the one-way valve 21 moves to the right. Driven by the one-way valve 21, the sliding end 312 moves along the corresponding guide groove 321 in the guide groove assembly 32. When the one-way valve 21 moves until the sealing structure 211 and the sealing structure 121 are tightly aligned, a seal is formed at the joint to seal the valve cavity. At this point, the sliding end 312 has slid past the stepped junction at the bottom of the guide groove 321 and entered the next guide groove 321. Because the entire one-way valve 21, except for the sealing structure 211, is located to the right of the joint, fluid on the left side of the two-way valve 8 cannot bypass the seal at the joint to flow to the right. Because the one-way valve 21 only conducts to the right, fluid on the right side of the two-way valve 8 cannot bypass the one-way valve 21 and the joint to flow to the left. At this point, the two-way valve 8 is non-conductive in both directions.

[0081] In the second state, the two-way valve 8 is opened to the right.

[0082] Referring to Figures 2, 3, and 4, when the pressure on the right side of the one-way valve 21 is greater than the combined force on the left side, the one-way valve 21 is blocked, causing the one-way valve 21 to move leftward and compress the first elastic member 41. At this time, driven by the one-way valve 21, the sliding end 312 moves along the guide groove 321 where the sliding end 312 is located when the two-way valve 8 is in the first state, i.e., the two-way non-conductive state. When the sliding end 312 slides over the stepped junction on the bottom surface of the guide groove 321, enters the next guide groove 321, and slides to its leftmost end, the sliding end 312 cannot slide leftward, causing the one-way valve 21 to stop moving. At this point, the fluid outlet 213 is located within the sealing section 12.

[0083] Subsequently, the pressure of the fluid on the right side of the one-way valve 21 is reduced until the one-way valve 21 can move rightward. Driven by the one-way valve 21, the sliding end 312 slides rightward along the guide groove 321 in which it is located. After the sliding end 312 passes the stepped junction on the bottom surface of the guide groove 321 and enters the next guide groove 321, sliding to its rightmost end, it is unable to slide rightward, causing the one-way valve 21 to stop moving. At this point, the sealing structure 211 and fluid inlet 212 of the one-way valve 21 are located within the conducting section 11, while the remaining portion is located within the sealing section 12. The conducting structure 111 is connected to the fluid inlet 212. Fluid on the left side of the two-way valve 8 can flow rightward through the conducting section 11, the conducting structure 111, the fluid inlet 212, the internal passage of the one-way valve 21, the fluid outlet 213, and the sealing section 12. However, due to the rightward-only nature of the one-way valve 21, fluid on the right side of the two-way valve 8 cannot flow past the one-way valve 21 to the left. At this time, the two-way valve 8 is opened to the right.

[0084] In the third state, the two-way valve 8 is open to the left.

[0085] Referring to Figures 2, 3, and 4, when the pressure on the right side of the one-way valve 21 is greater than the combined force on the left side, the one-way valve 21 is not conducting, so the one-way valve 21 moves to the left and compresses the first elastic member 41. At this time, the sliding end 312, driven by the one-way valve 21, moves along the guide groove 321 where the sliding end 312 is located when the two-way valve 8 is in the second state, that is, the rightward conducting state. The sliding end 312 slides over the stepped joint at the bottom of the guide groove 321 and enters the next guide groove 321. At this time, the sealing structure 211 and the fluid inlet 212 of the one-way valve 21 are located in the conducting section 11, and the remaining part is located in the sealing section 12. Keeping the pressure on the right side of the one-way valve 21 unchanged, the one-way valve 21 will continue to drive the sliding end 312 to move to the left. When the one-way valve 21 moves to the point where the fluid outlet 213 is located in the conducting section 11, if the pressure on the right side is large enough, the one-way valve 21 will continue to move to the left until the sliding end 312 is located at the leftmost end of the guide groove 321 and stops; otherwise, the sliding end 312 will continue to move to the left for a distance and stop after the forces on both sides of the one-way valve 21 are balanced. At this time, the sealing structure 211, fluid inlet 212, and fluid outlet 213 of the one-way valve 21 are located in the conducting section 11, and the remaining parts are located in the sealing section 12. The conducting section 11 is connected to the sealing section 12 through the conducting structure 111, crossing the one-way valve 21. The fluid pressure on the right side of the two-way valve 8 is greater than the fluid pressure on the left side, and the fluid flows from right to left. At this time, the two-way valve 8 is conducting to the left.

[0086] Furthermore, regarding the first state of two-way valve 8, "when the pressure on the right side of one-way valve 21 is less than the combined force on the left side, one-way valve 21 moves rightward. At this point, driven by one-way valve 21, sliding end 312 moves along a corresponding guide groove 321 in guide groove group 32." The "corresponding guide groove 321" refers to guide groove 321 where sliding end 312 resides when two-way valve 8 is in the third state, i.e., the leftward conducting state. Therefore, the three states of two-way valve 8 can be cycled through sequentially to achieve the functions described herein.

[0087] Two-way valve embodiment 2:

[0088] As shown in Figure 1, the valve body 1 of the two-way valve 8 is generally cylindrical. When the valve body 1 is cut open along the AA section (see Figure 1), the inner wall of the valve body 1 (see Figure 5) is divided into a conducting section 11 and a sealing section 12. The conducting section 11 includes one or more groove-shaped conducting structures 111 extending through the conducting section and arranged in parallel along the circumference of the inner wall of the valve body 1. The specific number of conducting structures 111 can be determined by those skilled in the art based on practical circumstances and is therefore within the scope of patent protection of this invention. The sealing section 12 is embedded with a guide groove group 32, which consists of four guide grooves 321 as a basic unit, with at least one basic unit distributed circumferentially along the inner wall of the valve body 1.

[0089] Arranged from left to right within the valve cavity are the blocking body 22, reset assembly 4, one-way valve 21, and the sliding assembly 31 positioned thereon (see Figures 6 and 7). The blocking body 22 consists of a cylindrical protrusion 221 and a fixed connection 222. The cylindrical protrusion 221 is generally cylindrical in shape and mates with the fluid inlet 212 of the one-way valve 21. The fixed connection 222 securely connects the cylindrical protrusion 221 to the valve body 1 and aligns its position within the valve cavity with the fluid inlet 212. The number of fixed connections 222 can be determined by those skilled in the art based on practical circumstances and is encompassed within the scope of patent protection of this invention. The reset assembly 4 consists of a first elastic member 41, which is a spring. The left end of the first elastic member 41 presses against the fixed connection 222, pushing it leftward, while the right end presses against the one-way valve 21, pushing it rightward. The blocking body 22 and the one-way valve 21 together constitute the valve core 2. The outer side surface of the one-way valve 21 fits tightly against the sealing section 12 and seals the valve cavity. The fluid inlet 212 is located on the bottom surface of the left end of the one-way valve 21 and is connected to the fluid outlet 213 located at the right end of the one-way valve through a one-way conducting channel located inside the one-way valve 21. As is known to all, there are many ways to implement the one-way conducting structure inside the one-way valve. Those skilled in the art can choose any one of them according to actual conditions, and all are included in the scope of patent protection of the present invention. The fluid outlet 213 is directly connected to the valve cavity. There are two support bodies 214 at the right end of the one-way valve 21, and the fixed structure 5 is a blind hole located on one of the support bodies 214. The elastic structure 311 and the fixed end 313 of the sliding assembly 31 are inserted into the fixed structure 5, and the sliding end 312 is inserted into the guide groove 321 and is pushed by the elastic structure 311 to fit tightly against the bottom surface of the guide groove 321. The outer diameter of the sliding end 312 matches the width of the guide groove 321, and it will not swing to the sides of the guide groove 321 when sliding along the guide groove 321. The specific width can be set by those skilled in the art according to actual conditions, and is included in the scope of patent protection of this invention.

[0090] Sliding assembly 31 consists of a cylinder with a blind hole at one end (see Figure 11) and an elastic structure 311. Elastic structure 311 is a spring, with a fixed end 313 located at the end with the hole, and a sliding end 312 located at the end without the hole. Inserted into the blind hole, elastic structure 311 simultaneously applies forces in opposite directions to the bottom surface of fixed structure 5 and sliding end 312.

[0091] Specific working principle:

[0092] The valve body 1 , the valve core 2 , the limit assembly 3 , and the reset assembly 4 together constitute a push-push structure, which is also commonly referred to as a push-push structure.

[0093] As can be seen from the figure, the left side of the one-way valve 21 is subjected to the combined force of the fluid and the first elastic member 41 , and the right side is subjected to the pressure of the fluid.

[0094] As is well known, the moving parts within the two-way valve 8 are also subject to forces such as gravity and friction during their movement. This description, which only explains the operating principle, does not consider these factors. Those skilled in the art may adjust the specific parameters of the fluid pressure, first elastic member 41, and elastic structure 311 based on actual conditions and the influence of forces such as gravity and friction, and all such factors are within the scope of patent protection of this invention.

[0095] In the first state, the two-way valve 8 is open to the left.

[0096] Referring to Figures 5, 6, and 7, when the pressure on the right side of the one-way valve 21 is greater than the combined force on the left side, the one-way valve 21 is blocked. Consequently, the one-way valve 21 moves leftward and compresses the first elastic member 41. At this point, driven by the one-way valve 21, the sliding end 312 moves along a corresponding guide groove 321 in the guide groove group 32. The sliding end 312 slides over the stepped junction at the bottom of the guide groove 321 and enters the next guide groove 321. At this point, the fluid inlet 212 of the one-way valve 21 is located within the conducting section 11, the fluid outlet 213 and support body 214 are located within the sealing section 12, and the columnar protrusion 221 is inserted into the fluid inlet 212 to a certain depth, sealing it. To maintain the pressure on the right side of the one-way valve 21, the one-way valve 21 will continue to drive the sliding end 312 to the left. When the one-way valve 21 moves to the point where the fluid outlet 213 is located within the conducting section 11, if the pressure on the right side is large enough, the one-way valve 21 will continue to move to the left until the sliding end 312 is located at the leftmost end of the guide groove 321, and will stop. Otherwise, the sliding end 312 will continue to move to the left for a distance, and will stop after the forces on both sides of the one-way valve 21 are balanced. At this point, the fluid inlet 212 and fluid outlet 213 of the one-way valve 21 are located within the conducting section 11, and the remaining portion is located within the sealing section 12. The columnar protrusion 221 is inserted into the fluid inlet 212 to a certain depth and seals it. The conducting section 11 is connected to the sealing section 12 through the conducting structure 111, passing over the one-way valve 21. The fluid pressure on the right side of the two-way valve 8 is greater than the fluid pressure on the left side, and the fluid flows from right to left. At this point, the two-way valve 8 is conducting to the left.

[0097] In the second state, the two-way valve 8 is not conductive in both directions.

[0098] Referring to Figures 5, 6, and 7, when the pressure on the right side of the one-way valve 21 is less than the combined force on the left side, the one-way valve 21 moves to the right. At this time, the sliding end 312, driven by the one-way valve 21, moves along the guide groove 321 where the sliding end 312 is located when the two-way valve 8 is in the first state, i.e., the leftward conducting state. When the sliding end 312 slides over the stepped junction at the bottom of the guide groove 321, enters the next guide groove 321, and slides to its rightmost end, the sliding end 312 is unable to slide to the right, causing the one-way valve 21 to stop moving. At this point, the fluid inlet 212 of the one-way valve 21 is located within the conducting section 11, the fluid outlet 213 and the support body 214 are located within the sealing section 12, and the columnar protrusion 221 is inserted into the fluid inlet 212 to a certain depth and seals it. Because the outer side of the one-way valve 21 is tightly attached to the sealing section 12 and seals the valve cavity, and the fluid inlet 212 is sealed by the cylindrical protrusion 221, the fluid on both sides of the one-way valve 21 cannot flow to the other direction.

[0099] In the third state, the two-way valve 8 is opened to the right.

[0100] Referring to Figures 5, 6, and 7, when the pressure on the right side of the one-way valve 21 is greater than the combined force on the left side, the one-way valve 21 is non-conductive. Therefore, the one-way valve 21 moves to the left and compresses the first elastic member 41. At this time, the sliding end 312, driven by the one-way valve 21, moves along the guide groove 321 where the sliding end 312 is located when the two-way valve 8 is in the second state, i.e., the two-way non-conductive state. When the sliding end 312 slides over the stepped junction at the bottom of the guide groove 321, enters the next guide groove 321, and slides to its leftmost end, the sliding end 312 cannot slide to the left, causing the one-way valve 21 to stop moving. At this time, the fluid inlet 212 is located within the conducting section 11, the fluid outlet 213 and the support body 214 are located within the sealing section 12, and the columnar protrusion 221 is inserted into the fluid inlet 212 to a certain depth and seals it.

[0101] Subsequently, the pressure of the fluid on the right side of the one-way valve 21 is reduced until the one-way valve 21 can move rightward. Driven by the one-way valve 21, the sliding end 312 slides rightward along the guide groove 321 in which it is located. When the sliding end 312 slides past the stepped junction on the bottom surface of the guide groove 321 and enters the next guide groove 321 and slides to its rightmost end, it is unable to slide rightward, causing the one-way valve 21 to stop moving. At this point, the fluid outlet 213 and support body 214 are located within the sealing section 12, the cylindrical protrusion 221 is separated from the fluid inlet 212, and the conductive structure 111 is connected to the fluid inlet 212. The fluid on the left side of the two-way valve 8 can flow rightward through the conductive section 11, the conductive structure 111, the fluid inlet 212, the internal channel of the one-way valve 21, the fluid outlet 213, and the sealing section 12 in sequence. However, due to the rightward-only nature of the one-way valve 21, the fluid on the right side of the two-way valve 8 cannot flow past the one-way valve 21 to the left. At this time, the two-way valve 8 is opened to the right.

[0102] Furthermore, regarding the first state of the two-way valve 8, the phrase "sliding end 312, driven by the one-way valve 21, moves along a corresponding guide groove 321 in the guide groove set 32" refers to the guide groove 321 in which the sliding end 312 resides when the two-way valve 8 is in the third state, i.e., the rightward conducting state. Therefore, the three states of the two-way valve 8 can be cycled through in sequence to achieve the functions described herein.

[0103] Two-way valve embodiment three:

[0104] As shown in Figure 1, the valve body 1 of the two-way valve 8 is generally cylindrical. When the valve body 1 is cut open along section AA (see Figure 1), the inner wall of the valve body 1 (see Figure 8) is divided into a conducting section 11 and a sealing section 12. Conducting section 11 includes one or more slot-shaped conducting structures 111 extending through the conducting section and arranged in parallel along the circumference of the inner wall of the valve body 1. The specific number of conducting structures 111 can be determined by those skilled in the art based on practical circumstances and is therefore within the scope of protection of this invention. The fixing structure 5 is located within conducting section 11.

[0105] Arranged from left to right in the valve cavity are the first elastic member 41, the blocking body 22, the one-way valve 21, and the second elastic member 42 (see Figures 9 and 10). The first elastic member 41 and the second elastic member 42 constitute the reset assembly 4, and both the first elastic member 41 and the second elastic member 42 are springs. Both the left and right ends of the valve body 1 have circumferentially inward protrusions. The left end of the first elastic member 41 presses tightly against the inner side of the left end protrusion and pushes it to the left, while the right end of the first elastic member 41 presses tightly against the blocking body 22 and pushes it to the right. The right end of the second elastic member 42 is fixedly connected to the right end protrusion of the valve body 1 and pulls it to the left, while the left end of the second elastic member 42 is fixedly connected to the one-way valve 21 and pulls it to the right. The blocking body 22 and the one-way valve 21 constitute the valve core 2. The sealing body 22 is generally cylindrical in shape, with a support body 223 on its left bottom surface and a right bottom surface shaped to match the left bottom surface of the one-way valve 21. The right bottom surface of the sealing body 22 also features a cylindrical protrusion that mates with the fluid inlet 212 and seals it. The outer surface of the sealing body 22 is inlaid with a guide groove group 32. The guide groove group 32 consists of four guide grooves 321 as a basic unit, with more than one basic unit distributed circumferentially along the inner wall of the valve body 1. The outer surface of the one-way valve 21 tightly fits the sealing section 12, sealing the valve cavity. The fluid inlet 212 is located on the left bottom surface of the one-way valve 21 and communicates with the fluid outlet 213 located at the right end of the one-way valve 21 via a one-way channel located within the one-way valve 21. It is well known that there are various implementations of the one-way structure within a one-way valve. Those skilled in the art can choose any method based on their specific needs, and all are within the scope of protection of this invention. The fluid outlet 213 directly communicates with the valve cavity. The right end of the one-way valve 21 has two supports 214. The elastic structure 311 and fixed end 313 of the sliding assembly 31 are inserted into the fixed structure 5. The sliding end 312 is inserted into the guide groove 321 and, pushed by the elastic structure 311, clings to the bottom surface of the guide groove 321. The outer diameter of the sliding end 312 matches the width of the guide groove 321, preventing it from swinging to the sides of the guide groove 321 as it slides along the guide groove 321. The specific width can be determined by those skilled in the art based on actual conditions and is within the scope of patent protection of this invention.

[0106] Sliding assembly 31 consists of a cylinder with a blind hole at one end (see Figure 11) and an elastic structure 311. Elastic structure 311 is a spring, with a fixed end 313 located at the end with the hole, and a sliding end 312 located at the end without the hole. Inserted into the blind hole, elastic structure 311 simultaneously applies forces in opposite directions to the bottom surface of fixed structure 5 and sliding end 312.

[0107] Specific working principle:

[0108] The valve body 1 , the valve core 2 , the limit assembly 3 , and the reset assembly 4 together constitute a push-push structure, which is also commonly referred to as a push-push structure.

[0109] As can be seen from the figure, the left side of the sealing body 22 is subjected to the combined force of the fluid and the first elastic member 41, and the right side is subjected to the thrust of the one-way valve 21; the left side of the one-way valve 21 is subjected to the combined force of the fluid and the sealing body 22, and the right side is subjected to the combined force of the fluid and the second elastic member 42.

[0110] As is well known, the moving parts within the two-way valve 8 are also subject to forces such as gravity and friction during their movement. This description, which only explains the operating principle, does not consider these factors. Those skilled in the art may adjust the specific parameters of the fluid pressure, the complex assembly 4, and the elastic structure 311 based on actual conditions and the influence of forces such as gravity and friction, and all such factors are within the scope of patent protection of this invention.

[0111] In the first state, the two-way valve is open to the right.

[0112] Refer to Figures 8, 9, and 10. When the force on the right side of the one-way valve 21 is greater than the force on the left side, the one-way valve 21 is blocked. Therefore, the one-way valve 21 moves to the left and stretches the second elastic member 42. At the same time, the one-way valve 21 pushes the blocking body 22, which is tightly fitted with it, to move to the left and compress the first elastic member 41. At this time, according to the principle of relative motion, the sliding end 312 slides to the right relative to the blocking body 22 along a corresponding guide groove 321 in the guide groove group 32. The sliding end 312 slides across the stepped junction on the bottom surface of the guide groove 321, enters the next guide groove 321, and slides to its rightmost end. The sliding end 312 cannot slide to the right, causing the one-way valve 21 and the blocking body 22 to stop moving. At this time, the fluid inlet 212 of the one-way valve 21 is located in the conducting section 11, and the fluid outlet 213 and support body 214 are located in the sealing section 12. The blocking body 22 is tightly fitted with the one-way valve 21 and seals it.

[0113] Subsequently, the pressure of the fluid on the right side of the one-way valve 21 is reduced to the point where the one-way valve 21 can move to the right and compress the second elastic member 42. The blocking body 22, pushed by the combined force on its left side, moves to the right against the one-way valve 21. At this time, according to the principle of relative motion, the sliding end 312 slides to the left relative to the blocking body 22 along the guide groove 321 in which it is located. When the sliding end 312 slides over the stepped junction on the bottom surface of the guide groove 321, enters the next guide groove 321 and slides to its leftmost end, the sliding end 312 cannot slide to the left, causing the blocking body 22 to stop moving. At this point, the blocking body 22 and the fluid inlet 212 are located within the conducting section 11, and the fluid outlet 213 and the support body 214 are located within the sealing section 12. The one-way valve 21 continues to move to the right until the forces on both sides are balanced and stops. At this point, the one-way valve 21 is located within the sealing section 12 and is completely separated from the blocking body 22, and the conducting structure 111 is connected to the fluid inlet 212. The fluid on the left side of the two-way valve 8 can flow rightward through the conducting section 11, the conducting structure 111, the fluid inlet 212, the internal passage of the one-way valve 21, the fluid outlet 213, and the sealing section 12. However, because the one-way valve 21 only conducts to the right, the fluid on the right side of the two-way valve 8 cannot flow leftward past the one-way valve 21. At this point, the two-way valve 8 is conducting to the right.

[0114] In the second state, the two-way valve 8 is open to the left.

[0115] Refer to Figures 8, 9, and 10. When the force on the right side of the one-way valve 21 is greater than the force on the left side, the one-way valve 21 is not conductive, so the one-way valve 21 moves to the left and stretches the second elastic member 42. After the one-way valve 21 moves to fit tightly with the blocking body 22, the one-way valve 21 pushes the blocking body 22 to move to the left and compresses the first elastic member 41. At this time, according to the principle of relative motion, the sliding end 312 is in the first state along the above-mentioned two-way valve 8, that is, the guide groove 321 where the sliding end 312 is located slides to the right relative to the blocking body 22 when the sliding end 312 is in the right conductive state. The sliding end 312 slides over the stepped joint on the bottom surface of the guide groove 321, enters the next guide groove 321 and slides to its rightmost end. The sliding end 312 cannot slide to the right, causing the one-way valve 21 and the blocking body 22 to stop moving. At this time, the fluid inlet 212 of the one-way valve 21 is located in the conducting section 11 , the fluid outlet 213 and the support body 214 are located in the sealing section 12 , and the blocking body 22 is tightly attached to and seals the one-way valve 21 .

[0116] Keeping the pressure on the right side of the one-way valve 21 from decreasing, the one-way valve 21 will continue to push the blocking body 22 to move to the left. When the one-way valve 21 moves to the point where the fluid outlet 213 is located in the conducting section 11, if the pressure on the right side is large enough, the one-way valve 21 will continue to move to the left until the sliding end 312 is located at the rightmost end of the guide groove 321 and stops; otherwise, the one-way valve 21 will continue to move to the left for a distance and stop after the forces on both sides of the one-way valve 21 are balanced. At this time, the fluid inlet 212 and the fluid outlet 213 of the one-way valve 21 are located in the conducting section 11, and the rest of the one-way valve 21 is located in the sealing section 12. The blocking body 22 fits tightly against the one-way valve 21 and seals it. The conducting section 11 is connected to the sealing section 12 through the conducting structure 111, passing over the blocking body 22 and the one-way valve 21. The fluid pressure on the right side of the two-way valve 8 is greater than the fluid pressure on the left side, and the fluid flows from right to left. At this time, the two-way valve 8 is conducting to the left.

[0117] In the third state, the two-way valve is not conductive in both directions.

[0118] Refer to Figures 8, 9, and 10. When the force on the right side of the one-way valve 21 is less than the force on the left side, the one-way valve 21 moves to the right and compresses the second elastic member 42. The blocking body 22, pushed by the combined force on its left side, moves to the right against the one-way valve 21. At this time, according to the principle of relative motion, the sliding end 312 is in the second state along the above-mentioned two-way valve 8, that is, the guide groove 321 where the sliding end 312 is located slides to the left relative to the blocking body 22 when the sliding end 312 is in the left-conducting state. The sliding end 312 slides over the stepped joint at the bottom of the guide groove 321, enters the next guide groove 321, and slides to its leftmost end. At this time, the one-way valve 21 is located in the sealing section 12, the second elastic member 42 is fully compressed, and the one-way valve 21 is pressed tightly against the second elastic member 42 and cannot move to the right anymore. The blocking body 22 presses tightly against the one-way valve 21 to the right and seals it. Because the outer side of the one-way valve 21 is in close contact with the sealing section 12 and seals the valve cavity, the fluid inlet 212 is sealed by the blocking body 22. The fluids on both sides of the one-way valve 21 cannot flow to each other. At this time, the two-way valve 8 is not conductive in both directions.

[0119] Furthermore, regarding the first state of the two-way valve 8, "according to the principle of relative motion, the sliding end 312 slides rightward relative to the blocking body 22 along a corresponding guide groove 321 in the guide groove group 32." The "corresponding guide groove 321" refers to the guide groove 321 where the sliding end 312 resides when the two-way valve 8 is in the third state, i.e., the bidirectional non-conducting state. Therefore, the three states of the two-way valve 8 can be cycled through in sequence to achieve the functions described in the present invention.

[0120] Fluid charging and discharging system embodiment:

[0121] As shown in Figure 12, the fluid storage chamber 9 is connected to the two-way valve 8 through the pipeline 7, and multiple two-way valves 8 are connected to the control device 6 in parallel through the pipeline 7. The control device 6 is located in the middle of a section of the pipeline 7 and can control the pressure, flow rate, flow direction and other parameters of the fluid in the pipeline 7. The two-way valve 8 is connected to the control device 6 at one end of the one-way valve 21 inside it, specifically to the left in Figure 12. Multiple fluid storage chambers 9 can be connected to each other to achieve a modular structure. The combination can be fixed or movable. Those skilled in the art can select and configure according to actual conditions, which are all included in the scope of patent protection of the present invention.

[0122] Specific working principle:

[0123] As is known, the connection and operation of the components of the fluid charging and discharging system require the coordination of various other related equipment and parts. This specification merely illustrates the operating principles and therefore does not elaborate on these in detail. Those skilled in the art may select commercially available equipment and parts for coordination based on actual circumstances, and may also set specific parameters for the related equipment and components within the system, all of which fall within the scope of patent protection of this invention.

[0124] 12 , the two-way valve 8 is taken as an example in which the initial state is two-way non-conduction.

[0125] The control device 6 first applies a sufficiently large pressure to the right on the fluid in the pipeline 7, and then reduces the pressure or provides pressure to the left. At this time, the conduction direction of the two-way valve 8 is consistent with the conduction direction of the one-way valve 21 inside it, specifically to the left in Figure 12. The fluid in the fluid storage chamber 9 can flow toward the control device 6 through the two-way valve 8, and the fluid in the fluid storage chamber 9 is released.

[0126] Subsequently, the control device 6 applies a sufficiently large pressure to the right on the fluid in the pipeline 7. At this time, the conduction direction of the two-way valve 8 is opposite to the conduction direction of the one-way valve 21 inside it, specifically to the right in Figure 12, and the fluid in the pipeline 7 is filled into the fluid storage chamber 9 through the two-way valve 8.

[0127] Finally, when the fluid in the fluid storage chamber 9 increases, the pressure increases, the pressure on both sides of the two-way valve 8 tends to be similar, or the control device 6 reduces the pressure or provides pressure to the left. At this time, the two-way valve 8 is transformed into a two-way non-conducting state, and the fluid in the fluid storage chamber 9 is sealed.

[0128] It should be noted that, in the present invention, the terms "front", "rear", "left", "right", "up", "down", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0129] In the present invention, terms such as "first," "second," and the like are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0130] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0131] In the present invention, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes 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.

[0132] In the present invention, the same or similar terminology concepts, technical solutions and / or application scenario descriptions are generally only described in detail the first time they appear. When they appear again later, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, for the same or similar terminology concepts, technical solutions and / or application scenario descriptions that are not described in detail later, you can refer to the previous relevant detailed descriptions.

[0133] In the present invention, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0134] In the present invention, the specific shape, precision, length, thickness, material, etc. of each part can be adjusted according to actual conditions. In addition, the present invention is not limited to use only in fluid charging and discharging systems, but can also be used in other systems that require state adjustment and control.

[0135] The technical features of the above-mentioned embodiments can be combined arbitrarily and are not limited to independent schemes. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A two-way valve based on a push-push structure, characterized in that: Contains valve body, valve core, limit assembly and reset assembly; The valve body includes a valve cavity that penetrates the valve body; The valve core is located in the valve cavity; The limiting assembly includes a sliding assembly and a guide groove assembly, and the limiting assembly is located between the valve core and the valve body and connected to the two; The reset assembly includes one or more elastic members, and the two ends of the elastic member are respectively connected to the movable part in the valve core and the valve body; The above components together constitute a push-push structure, which is also commonly called a push-push structure; Under the action of external force and the reset assembly, part of the structure of the valve core can slide in the valve cavity and be limited to multiple predetermined positions in the valve cavity by the limit assembly. The structures on the valve body and the valve core form different predetermined fits at different predetermined positions, and the different predetermined fits respectively correspond to the sealing, forward conduction, reverse conduction and other states of the two-way valve.

2. The two-way valve according to claim 1, characterized in that: The limiting assembly includes a sliding assembly and a guide groove assembly; The sliding assembly includes an elastic structure, a sliding end, and a fixed end. The sliding end is inserted into and pressed against the bottom surface of the guide groove group under the action of the elastic structure. The fixed end cooperates with the corresponding fixed structure and does not move relative to the component connected thereto in the axial direction of the valve cavity. The sliding assembly does not deform in the axial direction of the valve cavity. The guide groove group includes a plurality of guide grooves, the number of the guide grooves is an even number and not less than four, the guide grooves are connected and penetrated in adjacent order, each guide groove is connected to two guide grooves, and any two guide grooves are only connected once, the bottom surface inside the guide groove is smooth, the bottom surface of the guide grooves at the junction is step-shaped, the vertical surface of the step does not point to the same guide groove at the same time, the end of the guide groove close to the step vertical surface is the head end, and the end of the guide groove close to the step plane is the tail end, the groove depths of the head and tail ends of the guide groove are different and the transition is smooth, the direction of the line connecting the head end to the tail end of the guide groove is the guide of the guide groove, and the guide directions of the two connected guide grooves are opposite along the axial direction of the valve cavity; The sliding end of the sliding assembly can slide along the guide groove under the action of external force, and when the sliding end slides from the plane of the step to the vertical surface of the step, it enters the next guide groove; The number, length, position, shape, groove depth and the position of the connection on the guide groove of the guide groove are all matched with the different predetermined matches of the valve body and the valve core.

3. The two-way valve according to claim 1, characterized in that: The valve core includes a one-way valve, which is axially conductive along the valve cavity. The exterior of the one-way valve is sequentially arranged with a sealing structure, a fluid inlet, and a fluid outlet along the conductive direction. The interior of the one-way valve has a one-way conductive channel connecting the fluid inlet and the fluid outlet. The sealing structure is located on the outer side of the one-way valve and is distributed circumferentially. The fluid inlet is located on the outer side of the one-way valve, and the fluid outlet is directly connected to the valve cavity. The reset assembly includes an elastic member, both ends of which are connected to the one-way valve and the valve body respectively; The sliding assembly and the guide groove group of the limit assembly are respectively connected to the one-way valve and the valve body, and the corresponding relationship of the connections can be interchanged; The closure of the valve body is connected to the closure of the valve body by a threaded connection, and the closure of the valve body is connected to the closure of the valve body by a threaded connection. The closure of the valve body is connected to the closure of the valve body by a threaded connection, and the closure of the valve body is connected to the closure of the valve body by a threaded connection.

4. The two-way valve according to claim 1, characterized in that: The valve core includes a one-way valve and a blocking body; The one-way valve is axially conductive along the valve cavity, the fluid inlet and fluid outlet of the one-way valve are respectively located on the bottom surfaces at both ends of the one-way valve and are directly connected to the valve cavity, and the inside of the one-way valve is provided with a one-way conductive channel connecting the fluid inlet and the fluid outlet.

5. The two-way valve according to claim 4, characterized in that: The blocking body is fixedly connected to the valve body, and the connection does not seal the valve cavity; the blocking body is located on one side of the one-way valve fluid inlet and has a columnar protrusion on the side facing the one-way valve, the columnar protrusion is aligned with the fluid inlet of the one-way valve along the axial direction of the valve cavity, and the structure of the columnar protrusion cooperates with the one-way valve fluid inlet and the channel therein; the columnar protrusion and the fluid inlet of the one-way valve form a predetermined fit, and the columnar protrusion can be inserted into the fluid inlet of the one-way valve to a predetermined depth and seal it; The reset assembly includes an elastic member, both ends of which are connected to the one-way valve and the valve body respectively; The sliding assembly and the guide groove group of the limit assembly are respectively connected to the one-way valve and the valve body, and the corresponding relationship of the connections can be interchanged; The inner wall of the valve body is divided into a conducting section and a sealing section in sequence along the conducting direction of the one-way valve; the outer side surface of the one-way valve is tightly fitted with the inner wall of the sealing section, and when the one-way valve is located in the sealing section, the two form a predetermined fit, and the valve cavity is not conducting in the direction opposite to the conducting direction of the one-way valve; the inner wall of the conducting section is provided with a groove-shaped conducting structure, and when the fluid outlet of the one-way valve is located within the range of the conducting section, the one-way valve and the valve body form a predetermined fit, and the valve cavity is bidirectionally conducting.

6. The two-way valve according to claim 4, characterized in that: The blocking body is movably connected to the valve body, and the blocking body is located on the side of the one-way valve fluid inlet. The structure of the blocking body on the side facing the one-way valve forms a predetermined match with the structure on the bottom surface where the one-way valve fluid inlet is located. When the blocking body and the one-way valve are in contact under the action of an external force, the fluid inlet of the one-way valve can be sealed. When the aperture of the valve cavity is large, one end or both ends of the blocking body can have a support body extending in the axial direction; The reset assembly includes a first elastic member and a second elastic member, wherein two ends of the first elastic member are respectively connected to the blocking body and the valve body, and two ends of the second elastic member are respectively connected to the one-way valve and the valve body; The sliding assembly and the guide groove group of the limiting assembly are respectively connected to the blocking body and the valve body, and the corresponding relationship of the connections can be interchanged; The inner wall of the valve body is divided into a conducting section and a sealing section in sequence along the conducting direction of the one-way valve; the outer side surface of the one-way valve is tightly fitted with the inner wall of the sealing section, and when the one-way valve is located in the sealing section, the two form a predetermined fit, and the valve cavity is not conducting in the direction opposite to the conducting direction of the one-way valve; the inner wall of the conducting section is provided with a groove-shaped conducting structure, and when the fluid outlet of the one-way valve is located within the range of the conducting section, the one-way valve and the valve body form a predetermined fit, and the valve cavity is bidirectionally conducting.

7. The two-way valve according to any one of claims 3 to 6, characterized in that: When the valve cavity has a larger aperture, one end or both ends of the one-way valve may have a support body extending in the axial direction.

8. A fluid charging and discharging system, characterized in that: comprising a control device, a pipeline, a two-way valve according to any one of claims 1 to 7, and a fluid storage chamber; The control device can apply a desired pressure to the fluid in the pipeline; The end of the two-way valve pointed in the conducting direction of the one-way valve in the valve core is connected to the control device through the pipeline, and the other end of the two-way valve can be directly connected to the fluid storage chamber or connected to the fluid storage chamber through another section of pipeline; There is at least one fluid storage chamber, and each fluid storage chamber is connected to at least one two-way valve; All the two-way valves are connected to the control device in parallel through the pipeline.

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