Sliding block assembly and valve

Abstract

The utility model provides a sliding block assembly and a valve, and relates to the technical field of valves. The sliding block assembly comprises a main body structure which is provided with a containing cavity, and the containing cavity is used for providing a circulation channel for fluid; the main body structure is provided with an inner wall positioned in the accommodating cavity; the inner wall comprises a first side wall and a second side wall which are oppositely arranged, and a top wall, one ends of the first side wall and the top wall are continuously connected through a first curved wall, and the other ends of the second side wall and the top wall are continuously connected through a second curved wall; in the middle section of the inner wall in the length direction, the curvature radius of the first curved wall and the curvature radius of the second curved wall are both smaller than the first size; wherein the first size is one half of the maximum distance between the first side wall and the second side wall in the same section. By changing the shape of the containing cavity of the main body structure, the fluid flowing sectional area of the sliding block assembly can be increased, the flow resistance can be reduced, the fluid flow can be increased, and the overall performance of the sliding block assembly can be improved.

Description

Technical Field

[0001] The present disclosure relates to the field of valve technology, and in particular to a slider assembly and a valve. Background Art

[0002] A valve is a device used to control the flow of fluids (such as water, steam, oil, gas, etc.). It can adjust the flow rate, pressure and flow direction of the fluid. Valves are widely used in various industrial fields, including chemical, petroleum, natural gas, electricity, water treatment, heating and air conditioning systems, etc. As a valve, a four-way valve has four interfaces and is usually used to control the flow direction of the fluid. The slider assembly is the fluid flow switching component of the four-way valve. Its position in the valve body can determine the passage of the fluid, and its performance affects the performance of the entire valve body.

[0003] Currently, when the overall size of the slider assembly is fixed, the fluid flow area, flow rate and flow resistance of the slider assembly are all fixed, which limits the performance improvement of the slider assembly. Utility Model Content

[0004] In view of this, a slider assembly and a valve are provided, wherein the slider assembly can change the fluid area of ​​the fluid, reduce the flow resistance, increase the fluid flow rate, and improve the overall performance of the slider assembly.

[0005] Other features and advantages of the present disclosure will become apparent from the following detailed description, or may be learned in part by the practice of the present disclosure.

[0006] According to one aspect of the present disclosure, there is provided a slider assembly, the slider assembly comprising:

[0007] A main body structure, wherein the main body structure has a receiving cavity, and the receiving cavity is used to provide a flow channel for a fluid;

[0008] The main structure has an inner wall, and the inner wall is located in the accommodating cavity;

[0009] The inner wall comprises a first side wall and a second side wall which are arranged opposite to each other, and a top wall, wherein one end of the first side wall and the top wall are continuously connected by a first curved wall, and the other end of the second side wall and the top wall are continuously connected by a second curved wall;

[0010] In a middle cross section of the inner wall in the length direction, the curvature radius of the first curved wall and the curvature radius of the second curved wall are both smaller than the first size;

[0011] The first dimension is half of the maximum distance between the first side wall and the second side wall in the same cross section.

[0012] In an exemplary embodiment of the present disclosure, a curvature radius of the top wall is greater than a curvature radius of the first curved wall and the second curved wall.

[0013] In an exemplary embodiment of the present disclosure, the radius of curvature of the first side wall is greater than the radius of curvature of the first curved wall and the second curved wall; the radius of curvature of the second side wall is greater than the radius of curvature of the first curved wall and the second curved wall.

[0014] In an exemplary embodiment of the present disclosure, a ratio of a radius of curvature of the first curved wall to the first dimension is 0.2 to 0.4; a ratio of a radius of curvature of the second curved wall to the first dimension is 0.2 to 0.4.

[0015] In an exemplary embodiment of the present disclosure, the main structure further includes an inner lining, and the inner lining includes the inner wall.

[0016] In an exemplary embodiment of the present disclosure, the liner has an annular connecting portion, which is arranged on a circumferential position of the liner and extends in a direction away from the liner, and the liner is fixed in the main structure through the annular connecting portion.

[0017] In an exemplary embodiment of the present disclosure, the slider assembly further includes a support pin, which is disposed in the accommodating cavity, and two ends of the support pin are respectively connected to the first side wall and the second side wall.

[0018] In an exemplary embodiment of the present disclosure, the support pin is connected to the main structure by welding or plugging.

[0019] In an exemplary embodiment of the present disclosure, the cross section of the support pin is elliptical, and the ratio of the major axis to the minor axis of the elliptical cross section of the support pin is 4-6.

[0020] According to another aspect of the present disclosure, a valve is provided, which includes the above-mentioned slider assembly; the ratio of the height to the width of the accommodating cavity is 1 to 1.2; wherein the width of the accommodating cavity is the maximum distance between the first side wall and the second side wall in the middle cross-section of the inner wall in the length direction; and the height is the maximum distance between the top wall and the lower surface of the main structure in the middle cross-section of the inner wall in the length direction.

[0021] The slider assembly provided by the present invention has an inner wall of a main structure including a first side wall, a second side wall and a top wall, the first side wall and the top wall are continuously connected by a first curved wall, the second side wall and the top wall are continuously connected by a second curved wall, the curvature radii of the first curved wall and the second curved wall are both smaller than a first dimension, and the first dimension is half of the width of the accommodating cavity. By changing the shape of the inner wall of the main structure, the capacity of the accommodating cavity can be expanded, the flow area of ​​the fluid can be increased, and the fluid flow rate can be increased, thereby reducing the flow resistance and improving the overall performance of the slider assembly.

[0022] The valve provided by the present disclosure applies the above-mentioned slider assembly, thereby improving the overall flow capacity of the valve, reducing the flow resistance of the valve, and improving the overall performance of the valve.

[0023] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0025] Figure 1 It is a schematic structural diagram of a conventional slider in an exemplary embodiment of the present disclosure.

[0026] Figure 2 It is a cross-sectional schematic diagram of a slider assembly in an exemplary embodiment of the present disclosure.

[0027] Figure 3 It is a cross-sectional schematic diagram of a slider assembly in an exemplary embodiment of the present disclosure.

[0028] Figure 4 It is a bottom view of a slider assembly in an exemplary embodiment of the present disclosure.

[0029] Figure 5 It is a schematic cross-sectional view of a slider assembly with a liner in an exemplary embodiment of the present disclosure.

[0030] Figure 6 It is a schematic cross-sectional view of a slider assembly with a liner in an exemplary embodiment of the present disclosure.

[0031] Figure 7 It is a bottom view of a slider assembly with a liner in an exemplary embodiment of the present disclosure.

[0032] Figure 8 It is a structural diagram of a valve in an exemplary embodiment of the present disclosure.

[0033] The reference numerals are described as follows:

[0034] 10. Slider assembly; 100. Main structure; 110. Accommodating cavity; 120. Inner wall; 121. First side wall; 122. Second side wall; 123. Top wall; 124. First curved wall; 125. Second curved wall; 200. Inner lining; 210. Annular connecting portion; 300. Support pin; 400. Valve; 401. Switching port; 402. Inlet; 1000. Arched top. DETAILED DESCRIPTION

[0035] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0036] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0037] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0038] In the relevant technology, valves can be used to control parameters such as flow, pressure and flow direction of fluids. Valves can be divided into many types according to their functions and applications, including stop valves, directional valves, safety valves, regulating valves, plug valves, butterfly valves and other types. As a type of directional valve, the four-way valve is usually used to control the movement direction of hydraulic cylinders, cylinders or other actuators. The four-way valve has four interfaces and can control the flow direction of two different fluids.

[0039] The main component used to change the direction of the fluid in a four-way valve is a slider (also called a slide valve or piston). The slider reconfigures the fluid channel by changing its position in the valve body. Figure 1 As shown, the top of the slider cavity may be an arched top 1000. When the length, width and height of the slider cavity are fixed, the flow rate and flow resistance of the slider cannot be changed, which limits the overall performance of the slider.

[0040] Based on this, the present disclosure provides a slider assembly 10, such as Figure 2 As shown, the slider assembly 10 includes: a main structure 100, the main structure 100 has a accommodating cavity 110, and the accommodating cavity 110 is used to provide a circulation channel for the fluid; the main structure 100 has an inner wall 120, and the inner wall 120 is located in the accommodating cavity 110; the inner wall 120 includes a first side wall 121 and a second side wall 122, and a top wall 123 that are arranged opposite to each other, one end of the first side wall 121 and the top wall 123 are continuously connected by a first curved wall 124, and the other end of the second side wall 122 and the top wall 123 are continuously connected by a second curved wall 125; in the middle section of the inner wall 120 in the length direction, the curvature radius of the first curved wall 124 and the curvature radius of the second curved wall 125 are both smaller than the first dimension; wherein the first dimension is one half of the maximum distance between the first side wall 121 and the second side wall 122 in the same section.

[0041] The slider assembly 10 provided by the present disclosure has an inner wall 120 of a main structure 100 including a first side wall 121, a second side wall 122 and a top wall 123. The first side wall 121 and the top wall 123 are continuously connected by a first curved wall 124, and the second side wall 122 and the top wall 123 are continuously connected by a second curved wall 125. The curvature radii of the first curved wall 124 and the second curved wall 125 are both smaller than a first dimension, and the first dimension is half of the width of the accommodating cavity 110. By changing the shape of the inner wall 120 of the main structure 100, the capacity of the accommodating cavity 110 can be expanded, the flow area of ​​the fluid can be increased, and the fluid flow rate can be increased, thereby reducing the flow resistance and improving the overall performance of the slider assembly 10.

[0042] The following will describe in detail the various parts of the slider assembly provided by the embodiment of the present disclosure in conjunction with the accompanying drawings:

[0043] In the embodiments provided in the present disclosure, Figures 2 to 4 As shown, the slider assembly 10 includes a main structure 100, and the main structure 100 has a receiving cavity 110, and the receiving cavity 110 is used to provide a flow channel for the fluid. The slider assembly 10 is generally used to control the flow rate and flow direction of the fluid. The main structure 100 is the main working part of the slider assembly 10. After the fluid passes through the main structure 100, the flow rate or flow direction can be changed.

[0044] The main structure 100 can be formed of materials such as stainless steel, copper alloy, plastic, hard alloy, ceramic, etc. For example, if it is formed of plastic, it can be made of plastic materials such as tetrafluoroethylene, nylon, polyoxymethylene, etc., and can be formed by injection molding. The main structure 100 provided by the present disclosure can be formed by different molding methods according to the different materials used.

[0045] like Figure 2 As shown, combined Figure 3 and Figure 4 The main structure 100 has an inner wall 120 and an outer wall arranged opposite to each other, the inner wall 120 is located in the accommodating cavity 110, the inner wall 120 wraps the accommodating cavity 110, and the contour shape of the inner wall 120 is the same or substantially the same as the contour shape of the accommodating cavity 110. The inner wall 120 includes a first side wall 121 and a second side wall 122, wherein the first side wall 121 and the second side wall 122 can extend in the length direction. The inner wall 120 also includes a top wall 123, which can also extend in the length direction.

[0046] One end of the first side wall 121 and the top wall 123 are continuously connected through the first curved wall 124, and the other end of the second side wall 122 and the top wall 123 are continuously connected through the second curved wall 125. The continuous connection in this article means that the two curves transition smoothly at the connection point, and the tangent directions of the two curves at the connection point are the same.

[0047] In the embodiment provided by the present disclosure, in the middle section of the inner wall 120 in the length direction, the curvature radius of the first curved wall 124 and the curvature radius of the second curved wall 125 are both smaller than the first dimension. The first dimension is half of the maximum distance between the first side wall 121 and the second side wall 122 in the same section, that is, the first dimension is half of the width of the accommodating cavity 110, that is, R1<B / 2; R2<B / 2, wherein B represents the width of the accommodating cavity 110, B / 2 represents the first dimension, R1 represents the curvature radius of the first curved wall 124, and R2 represents the curvature radius of the second curved wall 125. The first curved wall 124 and the second curved wall 125 with such dimensions can increase their own curvature degree, thereby increasing the flow area of ​​the accommodating cavity 110, increasing the flow rate, reducing the flow resistance, and improving the fluid flow capacity of the slider assembly 10.

[0048] The middle section of the inner wall 120 refers to a section located at or near the midpoint of the axis along the length direction of the main structure 100. Since the structures at both ends of the slider assembly 10 are not completely the same as the middle structure, the structure in the present disclosure is mainly applicable to the middle section of the inner wall 120.

[0049] The ratio of the radius of curvature of the first curved wall 124 to the first dimension is 0.2 to 0.4, that is, the value of R1:B / 2 is 0.2 to 0.4, for example, it can be 0.2, 0.25, 0.3, 0.35, 0.4, etc. The ratio of the radius of curvature of the second curved wall 125 to the first dimension is 0.2 to 0.4, that is, the value of R2:B / 2 is 0.2 to 0.4, for example, it can be 0.2, 0.25, 0.3, 0.35, 0.4, etc. The radius of curvature of the first curved wall 124 and the second curved wall 125 is within the above range, which can ensure that the curvature of the first curved wall 124 and the second curved wall 125 can achieve the purpose of increasing the fluid flow rate and ensure the ease of implementation in the manufacturing process.

[0050] The curvature radius of the first curved wall 124 and the curvature radius of the second curved wall 125 may be the same or different. To ensure the symmetry of the component structure and the convenience of process manufacturing, the curvature radius of the first curved wall 124 and the curvature radius of the second curved wall 125 are usually made the same.

[0051] In the embodiment provided by the present disclosure, the radius of curvature of the top wall 123 is greater than the radius of curvature of the first curved wall 124 and the second curved wall 125, that is, R3>R1 and R3>R2, where R3 represents the radius of curvature of the top wall 123. The top wall 123 is formed by a curve with a smaller degree of completeness than the first curved wall 124 and the second curved wall 125, which can reduce the difficulty of process processing and also achieve the purpose of increasing the flow area. Furthermore, the top wall 123 can be formed by a straight line. When the dimensions of the accommodating cavity 110 in all directions are fixed, the use of a straight top wall 123 can further increase the flow area of ​​the accommodating cavity 110 and improve the flow rate.

[0052] In the embodiment provided by the present disclosure, the radius of curvature of the first side wall 121 is greater than the radius of curvature of the first curved wall 124 and the second curved wall 125; the radius of curvature of the second side wall 122 is greater than the radius of curvature of the first curved wall 124 and the second curved wall 125, that is, R4>R1 and R4>R2; R5>R1 and R5>R2. In some embodiments, the first side wall 121 and the second side wall 122 can both adopt a curved curve away from the interior of the accommodating cavity 110 to increase the volume of the accommodating cavity 110 and improve the flow capacity of the accommodating cavity 110.

[0053] The first side wall 121 and the second side wall 122 may have the same or different curvature radii. To ensure the symmetry of the assembly structure and the convenience of process manufacturing, the curvature radius of the first side wall 121 is usually the same as the curvature radius of the second side wall 122. In some embodiments, the first side wall 121 and the second side wall 122 may also be formed in a straight line form to facilitate the subsequent assembly of the main structure 100 in the valve 400 and to improve the convenience of process manufacturing.

[0054] In the embodiments provided in the present disclosure, Figures 5 to 7 As shown, the main structure 100 also includes a liner 200, and the liner 200 includes an inner wall 120. In order to improve the strength of the main structure 100 and improve the service life of the slider assembly 10, the main structure 100 includes a body and a liner 200, and the liner 200 can be made of corrosion-resistant and high-strength materials such as alloys and stainless steel. The body is located outside the liner 200 and fits the outer wall of the liner 200, and the inner contour of the liner 200 forms the inner wall 120.

[0055] When the main structure 100 has the lining 200, the lining 200 also has the same inner wall structure as the main structure 100 provided in the above embodiment, that is, the inner wall 120 of the lining 200 also includes a first side wall 121 and a second side wall 122, and a top wall 123, which are arranged opposite to each other. One end of the first side wall 121 and the top wall 123 are continuously connected by a first curved wall 124, and the other end of the second side wall 122 and the top wall 123 are continuously connected by a second curved wall 125; in the middle section of the inner wall 120 in the length direction, the curvature radius of the first curved wall 124 and the curvature radius of the second curved wall 125 are both smaller than the first dimension; wherein the first dimension is one-half of the maximum distance between the first side wall 121 and the second side wall 122 in the same section. The structure, shape and positional relationship of the inner wall 120 included in other specific linings 200 are as described in the above embodiment and will not be described in detail here.

[0056] The liner 200 has an annular connection portion 210, which is arranged in a circumferential position of the liner 200 and extends in a direction away from the liner 200. The liner 200 is fixed in the main structure 100 through the annular connection portion 210. Specifically, when forming the main structure 100 with the liner 200, the liner 200 can be processed and formed first, and then the main body can be processed and formed by injection molding, so that the liner 200 and the main body are formed in a manner of fitting; or after the main body is processed and formed, a positioning groove can be opened on the main body, and the annular connection portion 210 can be inserted into the positioning groove, so that the main body and the liner 200 are connected; or the liner 200 and the main body can be fitted and connected by bonding. The connection method of the liner 200 and the main body can be adaptively selected according to the required strength of the component and the requirements of the specific processing method.

[0057] The wall thickness of the liner 200 is uniform, that is, the thickness of any part of the liner 200 is equal to ensure the fit between the liner 200 and the body. In the present disclosure, uniformity is not necessarily uniform in a strict sense. Due to process limitations, when manufacturing the liner 200, the thickness of one or some parts of the liner 200 may be smaller or larger, but the overall thickness of the liner 200 is uniform, and the liner 200 can be considered to be uniform.

[0058] In the embodiments provided in the present disclosure, Figures 2 to 7 As shown, in order to prevent the main structure 100 from being deformed or damaged due to environmental factors such as high pressure during operation, the slider assembly 10 also includes a support pin 300, which is arranged in the accommodating cavity 110, and the two ends of the support pin 300 are respectively connected to the first side wall 121 and the second side wall 122.

[0059] In some embodiments, the support pin 300 is connected to the main structure 100 by welding, for example, laser welding, argon arc welding, cold welding, etc., and one end of the support pin 300 is welded to the first side wall 121, and the other end of the support pin 300 is welded to the second side wall 122. Specifically, the distance between the welding point of the support pin 300 on the first side wall 121 and the welding point of the support pin 300 on the second side wall 122 is equal to the width of the accommodating cavity 110, which can ensure that the support pin 300 effectively supports the main structure 100, thereby increasing the strength of the slider assembly 10.

[0060] In some embodiments, the support pin 300 is connected to the main structure 100 by plugging. For example, slots can be respectively opened on the first side wall 121 and the second side wall 122, and the two ends of the support pin 300 are respectively inserted into the two slots to achieve the connection between the support pin 300 and the main structure 100, thereby improving the strength of the slider assembly 10.

[0061] In some embodiments, the slider assembly 10 does not have a liner 200, and when it is made of plastic or ceramics, etc., which is not suitable for connecting the support pin 300 by welding, a plug-in method can be used to connect the main structure 100 and the support pin 300. In some embodiments, the slider assembly 10 is made of metal material, which is convenient for connecting with the support pin 300 by welding, and the connection strength between the support pin 300 and the main structure 100 can be improved. In some embodiments, the slider assembly 10 has a metal liner 200, and the support pin 300 can be connected to the liner 200 by welding, or the liner 200 and the body in the main structure 100 can be slotted at the same time, so that the support pin 300 is connected to the main structure 100. In some embodiments, when the liner 200 is made of plastic or ceramics, etc., which is not suitable for connecting the support pin 300 by welding, a plug-in method can be used to connect the main structure 100 and the support pin 300.

[0062] The end of the support pin 300 may be in a smooth square or rectangular shape; or in a stepped shape; or in a convex shape. The shape of the end of the support pin 300 is matched with the shape of the slot provided on the first side wall 121 and the second side wall 122, such as a square or rectangular slot, a stepped slot or a concave slot. The shape of the end of the support pin 300 may be selected according to factors such as the specific use requirements and manufacturing requirements of the component, and the shape of the slot may match the shape of the end of the support pin 300.

[0063] It should be noted that when slotting is performed on the main body and the lining 200 at the same time, the slots on the main body and the slots on the lining 200 can be slots of the same shape and size and overlap with each other to ensure that the slots on the main body and the slots on the lining 200 are evenly stressed and will not be deformed or damaged.

[0064] The cross-sectional shape of the support pin 300 may be circular, elliptical, square, rectangular, semicircular, polygonal, etc., and the overall shape of the support pin 300 may be a round rod, an elliptical rod, a square rod, etc. Figure 3 and Figure 5 As shown, when the cross-section of the support pin 300 is an ellipse, the ratio of the length of the major axis to the minor axis of the ellipse is 4 to 6. For example, the ratio between the two can be 4, 5 or 6, which can not only ensure the supporting strength of the support pin 300, but also avoid the support pin 300 from blocking the opening of the accommodating cavity 110, thereby ensuring the effective support of the support pin 300 and improving the overall strength of the slider assembly 10.

[0065] The slider assembly 10 provided by the present disclosure has an inner wall 120 of a main structure 100 including a first side wall 121, a second side wall 122 and a top wall 123. The first side wall 121 and the top wall 123 are continuously connected by a first curved wall 124, and the second side wall 122 and the top wall 123 are continuously connected by a second curved wall 125. The curvature radii of the first curved wall 124 and the second curved wall 125 are both smaller than a first dimension, and the first dimension is half of the width of the accommodating cavity 110. By changing the shape of the inner wall 120 of the main structure 100, the capacity of the accommodating cavity 110 can be expanded, the flow area of ​​the fluid can be increased, and the fluid flow rate can be increased, thereby reducing the flow resistance and improving the overall performance of the slider assembly 10.

[0066] The present disclosure also provides a valve 400, such as Figure 8As shown, the valve 400 includes the above-mentioned slider assembly 10; the ratio of the height to the width of the accommodating cavity 110 of the slider assembly 10 is 1 to 1.2; wherein, the width of the accommodating cavity 110 is the maximum distance between the first side wall 121 and the second side wall 122 in any cross section of the inner wall 120 in the length direction; the height is the maximum distance between the top wall 123 and the lower surface of the main structure 100 in any cross section of the inner wall 120 in the length direction, and the length directions are perpendicular to each other.

[0067] In the embodiments provided in the present disclosure, in order to improve the performance of the slider assembly 10, the ratio of the height to the width of the accommodating cavity 110 of the slider assembly 10 can be 1 to 1.2. For example, the ratio between the two can be 1, 1.05, 1.1, 1.15, 1.2, etc. When the height-to-width ratio is within the above range, it can be ensured that the valve 400 has a larger flow rate and a smaller flow resistance.

[0068] In the embodiment provided in the present disclosure, a four-way valve is taken as an example. The valve 400 may also include a valve body having a valve cavity, four flow ports connected to the valve cavity, and a valve seat and other components. The slider assembly 10 is arranged in the valve cavity. Among the four flow ports, three flow ports are switching ports 401, and one flow port is an inlet 402. When the slider assembly 10 slides to two of the three switching ports 401 in the valve cavity, the two switching ports 401 are connected with the accommodating cavity 110 of the main structure 100 to form a low-pressure channel, and the low-pressure fluid flows in this low-pressure channel; the inlet 402 is connected with the remaining switching port 401 through the valve cavity to form a high-pressure channel, and the high-pressure fluid flows in this high-pressure channel. Since the valve 400 adopts the above-mentioned slider assembly 10, the flow resistance of the low-pressure fluid in the main structure 100 is reduced, the flow rate of the low-pressure fluid is increased, the internal pressure of the slider assembly 10 is further reduced, and the damage to the slider assembly 10 is avoided, thereby improving the overall strength and durability of the valve 400.

[0069] In the embodiment provided by the present disclosure, the structure of the slider assembly 10 is as described in the above embodiment, and the structure of the slider assembly 10 is not described in detail here. The above slider assembly 10 can be applied to various types of four-way valves such as T-type four-way valves, piston four-way valves, ball four-way valves or coil four-way valves. In addition, the valve 400 of the present disclosure is not limited to four-way valves, but can also be other types of valves 400, and the slider assembly 10 can also be adaptively modified, added, replaced, deleted or other changes, and these changes are still within the scope of the principle of the slider assembly 10 proposed by the present disclosure.

[0070] The valve 400 provided in the present disclosure uses the above-mentioned slider assembly 10, thereby improving the overall flow capacity of the valve 400, reducing the flow resistance of the valve 400, and improving the overall performance of the valve 400.

[0071] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A slider assembly, characterized in that: include: A main body structure (100), wherein the main body structure (100) has a receiving cavity (110), and the receiving cavity (110) is used to provide a flow channel for a fluid; The main structure (100) has an inner wall (120), and the inner wall (120) is located in the accommodating cavity (110); The inner wall (120) comprises a first side wall (121) and a second side wall (122) which are arranged opposite to each other, and a top wall (123); one end of the first side wall (121) and the top wall (123) are continuously connected via a first curved wall (124); and the other end of the second side wall (122) and the top wall (123) are continuously connected via a second curved wall (125); In a middle cross section of the inner wall (120) in the length direction, the curvature radius of the first curved wall (124) and the curvature radius of the second curved wall (125) are both smaller than the first size; The first dimension is one half of the maximum distance between the first side wall (121) and the second side wall (122) in the same cross section.

2. The slider assembly according to claim 1, characterized in that: The curvature radius of the top wall (123) is greater than the curvature radii of the first curved wall (124) and the second curved wall (125).

3. The slider assembly according to claim 1, characterized in that: The radius of curvature of the first side wall (121) is greater than the radius of curvature of the first curved wall (124) and the second curved wall (125); the radius of curvature of the second side wall (122) is greater than the radius of curvature of the first curved wall (124) and the second curved wall (125).

4. The slider assembly according to claim 1, characterized in that: The ratio of the radius of curvature of the first curved wall (124) to the first dimension is 0.2 to 0.4; the ratio of the radius of curvature of the second curved wall (125) to the first dimension is 0.2 to 0.

4.

5. The slider assembly according to any one of claims 1 to 4, characterized in that: The main structure (100) further includes an inner liner (200), and the inner liner (200) includes the inner wall (120).

6. The slider assembly according to claim 5, characterized in that: The liner (200) has an annular connecting portion (210), which is arranged at a circumferential position of the liner (200) and extends in a direction away from the liner (200). The liner (200) is fixed in the main structure (100) via the annular connecting portion (210).

7. The slider assembly according to any one of claims 1 to 4, characterized in that: The slider assembly (10) further comprises a support pin (300), wherein the support pin (300) is arranged in the accommodating cavity (110), and two ends of the support pin (300) are respectively connected to the first side wall (121) and the second side wall (122).

8. The slider assembly according to claim 7, characterized in that: The support pin (300) is connected to the main structure (100) by welding or plugging.

9. The slider assembly according to claim 7, characterized in that: The cross section of the support pin (300) is elliptical, and the ratio of the major axis to the minor axis of the elliptical cross section of the support pin (300) is 4-6.

10. A valve, characterized in that: Comprising a slider assembly (10) as claimed in any one of claims 1 to 9; The ratio of the height to the width of the accommodating cavity (110) is 1 to 1.2; wherein the width of the accommodating cavity (110) is the maximum distance between the first side wall (121) and the second side wall (122) in the middle cross-section of the inner wall (120) in the length direction; and the height is the maximum distance between the top wall (123) and the lower surface of the main structure (100) in the middle cross-section of the inner wall (120) in the length direction.

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