Valve

Abstract

The valve comprises a valve seat, a valve body and a valve element assembly, the valve body comprises a valve body and a connecting convex lug, the valve seat is arranged at one end of the valve body in the axial direction, the valve seat and the valve body jointly define a valve cavity, and a fluid inlet and a fluid outlet which are communicated with the valve cavity are formed in the valve body. The connecting lug is arranged on the peripheral face of the valve body, the valve body is connected with the valve seat through the connecting lug, the connecting position of the connecting lug and the valve seat is located on the peripheral side of the valve body, and the valve element assembly is arranged in the valve cavity and used for controlling communication or cut-off of the fluid inlet and the fluid outlet. According to the valve, the distance between the connecting position of the valve body and the valve seat and the valve cavity can be increased, so that interference to the internal structure of the valve body in the connecting process of the valve body and the valve seat can be reduced, and the reliability of the valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control, in particular to a valve. Background Art

[0002] Valves are control components in fluid delivery systems. They are pipeline accessories that can be used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the delivery medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. The valve body and valve seat of split valves need to be assembled through assembly connection. However, the connection position between the valve body and the valve seat in the related technology is close to the internal structure of the valve, such as the valve core, spring and other components, which makes the assembly process very easy to affect the internal structure of the valve. For example, there is a risk of welding through and damaging the valve core during welding, which directly affects the reliability of the valve. Therefore, there is room for improvement. Utility Model Content

[0003] The utility model provides a valve, which has the advantage of high reliability.

[0004] According to the valve embodiment of the utility model, the valve comprises: a valve seat; a valve body, comprising a valve body and a connecting lug, the valve seat is arranged at one end of the valve body in the axial direction and defines a valve cavity together with the valve body, a fluid inlet and a fluid outlet connected to the valve cavity are formed on the valve body, the connecting lug is arranged on the outer peripheral surface of the valve body, the valve body is connected to the valve seat through the connecting lug, and the connection position between the connecting lug and the valve seat is located on the outer peripheral side of the valve body; a valve core assembly is arranged in the valve cavity and is used to control the connection or cutoff of the fluid inlet and the fluid outlet.

[0005] According to the valve of the embodiment of the utility model, a connecting lug is provided on the outer peripheral surface of the valve body, and the valve body is connected to the valve seat through the connecting lug. The connecting position of the connecting lug and the valve seat is located on the outer peripheral side of the valve body, which can better increase the distance between the connecting position of the valve body and the valve seat and the valve cavity, thereby reducing the interference of the connection process between the valve body and the valve seat on the internal structure of the valve body such as the valve core assembly, thereby improving the reliability of the valve.

[0006] According to some embodiments of the present invention, the connecting lug is welded or riveted to the valve seat.

[0007] According to some embodiments of the present invention, in the axial direction of the valve body, one end of the valve seat connected to the valve body forms a connecting surface located on the outer peripheral side of the valve body, and the connecting lug is arranged and connected to the connecting surface along the axial direction of the valve body.

[0008] According to some embodiments of the present invention, the connecting lug and the valve seat are stacked along the axial direction of the valve body.

[0009] According to some embodiments of the utility model, a mounting groove is formed in the valve seat, and the mounting groove has a mounting opening open toward the valve body, and one end of the valve body facing the valve seat is inserted into the mounting groove through the mounting opening, the connecting lug is located outside the mounting groove, and the outer peripheral edge of the mounting opening constitutes the connecting surface.

[0010] According to some embodiments of the utility model, in the axial direction of the valve body, a positioning groove for accommodating the connecting lug is formed on the end surface of the valve seat facing the valve body body, and the inner bottom surface of the positioning groove constitutes the connecting surface.

[0011] According to some embodiments of the utility model, the fluid inlet is formed at one end of the valve body away from the valve seat, the valve core assembly includes a valve core and an elastic return member arranged along the axial direction of the valve body, both ends of the elastic return member are respectively connected to the valve seat and the valve core, the valve core is movable along the axial direction of the valve body to switch between a first position connecting the fluid inlet and the fluid outlet and a second position cutting off the fluid inlet and the fluid outlet, and in the axial direction of the valve body, the connection position between the connecting surface and the connecting lug is located on the side of the valve core in the second position away from the fluid inlet.

[0012] According to some embodiments of the utility model, a mounting groove is formed in the valve seat, the mounting groove has a mounting opening open toward the valve body, one end of the valve body facing the valve seat is inserted into the mounting groove through the mounting opening, and the connecting lug is located in the mounting groove, wherein the outer peripheral surface of the connecting lug is welded to the inner peripheral surface of the mounting groove; or, the connecting lug is riveted in the mounting groove.

[0013] According to some embodiments of the present invention, a dimension of the connecting lug in the radial direction of the valve body is not less than 1 mm.

[0014] According to some embodiments of the present invention, the connecting lug is in a ring shape surrounding the outer circumferential surface of the valve body; or, a plurality of connecting lugs are arranged at intervals along the circumference of the valve body.

[0015] According to some embodiments of the utility model, the valve body and the connecting lug are integrally formed; and or, a limited rotation protrusion is formed on the inner circumferential surface of the valve body, and a limited rotation groove extending along the axial direction of the valve body is formed on the valve core, and the limited rotation protrusion is movably arranged in the limited rotation groove along the axial direction of the valve body.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a cross-sectional view according to the first embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional view according to the second embodiment of the utility model;

[0020] Figure 3 It is a cross-sectional view according to the third embodiment of the utility model;

[0021] Figure 4 is a cross-sectional view according to the fourth embodiment of the utility model;

[0022] Figure 5 It is a cross-sectional view according to the fifth embodiment of the utility model;

[0023] Figure 6 is a cross-sectional view according to Embodiment 6 of the present utility model;

[0024] Figure 7 It is a schematic diagram according to the sixth embodiment of the utility model;

[0025] Figure 8 It is a cross-sectional view according to the seventh embodiment of the present utility model.

[0026] Reference numerals:

[0027] Valve 100;

[0028] Valve seat 1; mounting groove 11; mounting opening 12; positioning groove 13;

[0029] Valve body 2; valve body 21; fluid inlet 211; fluid outlet 212; rotation limiting protrusion 213; connecting lug 22;

[0030] Valve chamber 3;

[0031] Valve core assembly 4; valve core 41; elastic reset member 42. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0034] The valve 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0035] like Figure 1-8 As shown, the valve 100 according to the embodiment of the present utility model includes: a valve seat 1, a valve body 2 and a valve core assembly 4, the valve body 2 includes a valve body 21 and a connecting lug 22, the valve seat 1 is arranged at one end of the valve body 21 in the axial direction and defines a valve cavity 3 together with the valve body 21, a fluid inlet 211 and a fluid outlet 212 connected to the valve cavity 3 are formed on the valve body 21, the connecting lug 22 is arranged on the outer peripheral surface of the valve body 21, the valve body 21 is connected to the valve seat 1 through the connecting lug 22, and the connection position of the connecting lug 22 and the valve seat 1 is located on the outer peripheral side of the valve body 21, and the valve core assembly 4 is arranged in the valve cavity 3 and is used to control the connection or cutoff of the fluid inlet 211 and the fluid outlet 212. That is to say, the connection position between the valve body 2 and the valve seat 1 is located on the side of the outer peripheral surface of the valve body main body 21 away from the valve cavity 3, which can better increase the distance between the connection position between the valve body 2 and the valve seat 1 and the valve cavity 3, thereby reducing the interference of the connection process between the valve body 2 and the valve seat 1 on the internal structure of the valve body 2 such as the valve core assembly 4, thereby improving the reliability of the valve 100.

[0036] For example, when the connecting lug 22 is connected to the valve seat 1 by welding, by increasing the distance between the connection position of the connecting lug 22 and the valve seat 1 and the valve cavity 3, the heat generated during the welding process, such as welding through the valve body 21, can be avoided to cause damage to the valve core assembly 4; when the connecting lug 22 is connected to the valve seat 1 by riveting, by increasing the distance between the connection position of the connecting lug 22 and the valve seat 1 and the valve cavity 3, the force borne during the riveting process can be avoided from being transmitted to the valve body 21 and causing deformation of the valve body 21, thereby avoiding deformation of the valve body 21 that hinders the normal movement of the valve core assembly 4, which is beneficial to improving the reliability and stability of the valve core assembly 4.

[0037] Specifically, when the valve core assembly 4 controls the fluid inlet 211 to be connected with the fluid outlet 212, a connected flow path is formed between the fluid inlet 211, the valve cavity 3 and the fluid outlet 212, and the fluid can enter the valve cavity 3 through the fluid inlet 211, and the fluid entering the valve cavity 3 can leave the valve cavity 3 through the fluid outlet 212, thereby realizing the flow of the fluid in the valve 100, that is, the valve 100 is in a conducting state at this time; when the valve core assembly 4 controls the shutoff of the fluid inlet 211 and the fluid outlet 212, that is, when the valve core assembly 4 cuts off the connection between the fluid inlet 211 and the fluid outlet 212 through the valve cavity 3, the valve 100 is in a shutoff state.

[0038] According to the valve 100 of the embodiment of the present utility model, a connecting lug 22 is provided on the outer peripheral surface of the valve body 21, and the valve body 21 is connected to the valve seat 1 through the connecting lug 22. The connecting position of the connecting lug 22 and the valve seat 1 is located on the outer peripheral side of the valve body 21, which can better increase the distance between the connecting position of the valve body 2 and the valve seat 1 and the valve cavity 3, thereby reducing the interference of the connection process of the valve body 2 and the valve seat 1 on the internal structure of the valve body 2 such as the valve core assembly 4, thereby improving the reliability of the valve 100.

[0039] In some embodiments, the valve 100 may be a one-way valve, wherein the valve core assembly 4 includes a valve core 41 and an elastic reset member 42, and the elastic reset member 42 is used to push the valve core 41 to remain in a position closing the fluid inlet 211. Specifically, when the fluid flows from the fluid inlet 211 toward the valve cavity 3, the fluid pushes the valve core 41 to squeeze the elastic reset member 42, thereby overcoming the elastic force of the elastic reset member 42 to open the fluid inlet 211, so that the fluid inlet 211 is connected to the valve cavity 3, that is, at this time, the valve core 41 is in a conducting state, and the fluid can enter the valve cavity 3 through the fluid inlet 211 and flow out through the fluid outlet 212; when the fluid pressure of the fluid inlet 211 acting on the valve core 41 disappears, the elastic reset member 42 restores the elastic deformation to push the valve core 41 back to the position closing the fluid inlet 211, and at this time, the valve 100 is in a cut-off state to cut off the flow of the fluid through the valve 100. Therefore, the fluid can only flow from the fluid inlet 211 to the fluid outlet 212, and the reverse flow of the fluid can be prevented.

[0040] According to some embodiments of the utility model, the connecting lug 22 is welded or riveted to the valve seat 1. That is, the connecting lug 22 can be connected to the valve seat 1 by welding, and the connection position of the connecting lug 22 and the valve seat 1 can form a whole after the welding connection, so that the connection position of the connecting lug 22 and the valve seat 1 can better withstand stress and impact, which is conducive to improving the stability and reliability of the connection between the valve body 2 and the valve seat 1; the connecting lug 22 can also be riveted to the valve seat 1, so that the time required for the connection of the connecting lug 22 and the valve seat 1 is short, and the range of applicable materials is wide, such as the valve body 2 can be a metal part or an injection-molded plastic part, which improves the applicable scope and efficiency of the connection.

[0041] According to some embodiments of the utility model, in the axial direction of the valve body 2, one end of the valve seat 1 connected to the valve body 2 is formed with a connection surface located on the outer peripheral side of the valve body main body 21, and the connection lug 22 is arranged and connected to the connection surface along the axial direction of the valve body 2. Therefore, during the process of assembling the valve body 2 and the valve seat 1 along the axial direction, the connection surface can be relatively matched with the connection lug 22, which reduces the difficulty of matching the connection surface with the connection lug 22, thereby improving the assembly efficiency of the valve body 2 and the valve seat 1.

[0042] According to some embodiments of the utility model, the connecting lug 22 and the valve seat 1 are stacked along the axial direction of the valve body 2. Therefore, a larger operating space can be provided for the connection between the connecting lug 22 and the valve seat 1, such as preventing the valve seat 1 from blocking the connection position of the connecting lug 22 and the valve seat 1, thereby reducing the difficulty of connecting the valve body 2 and the valve seat 1, and facilitating the improvement of the assembly efficiency of the valve body 2 and the valve seat 1.

[0043] In some embodiments, in the radial direction of the valve body 2, the end of the connecting lug 22 away from the valve body 21 protrudes from the outer peripheral surface of the valve seat 1 adjacent to the valve body 21, and the portion of the connecting lug 22 protruding from the outer peripheral surface of the valve seat 1 and the valve seat 1 jointly define a seal placement groove. Therefore, the valve seat 1 does not need to be provided with a separate seal placement groove, which can simplify the structure of the valve seat 1 to reduce the difficulty and cost of producing the valve seat 1. Among them, the seal placement groove is used to place the seal to ensure the sealing performance.

[0044] According to some embodiments of the utility model, a mounting groove 11 is formed in the valve seat 1, and the mounting groove 11 has a mounting opening 12 opened toward the valve body 21, and one end of the valve body 21 facing the valve seat 1 is inserted into the mounting groove 11 through the mounting opening 12, and the connecting lug 22 is located outside the mounting groove 11, and the outer peripheral edge of the mounting opening 12 constitutes a connecting surface. In other words, the valve body 21 and the valve seat 1 are plugged and matched, so that the pre-positioning of the valve body 2 and the valve seat 1 can be achieved during the connection process, so as to avoid the movement of the valve body 2 in the radial direction affecting the connection between the connecting lug 22 and the valve seat 1, and the connection position of the connecting lug 22 and the valve seat 1 is located outside the mounting groove 11, so that the connection between the connecting lug 22 and the valve seat 1 can have a larger operating space. Therefore, the difficulty of connecting the valve body 2 and the valve seat 1 can be reduced, which is conducive to improving the assembly efficiency of the valve body 2 and the valve seat 1.

[0045] According to some embodiments of the utility model, in the axial direction of the valve body 2, a positioning groove 13 for accommodating the connecting lug 22 is formed on the end surface of the valve seat 1 facing the valve body 21, and the inner bottom surface of the positioning groove 13 constitutes a connecting surface. In other words, the connecting lug 22 is fixedly connected to the valve seat 1 by connecting with the inner bottom surface of the positioning groove 13 facing the valve body 21, wherein, during the assembly process of the valve body 2 and the valve seat 1, the connecting lug 22 can be aligned with the positioning groove 13 and inserted to form a positioning, which can reduce the difficulty of pre-positioning during the assembly process of the valve body 2 and the valve seat 1, and at the same time, the installation position accuracy of the connecting lug 22 can be guaranteed, and no additional tooling positioning is required, which is conducive to improving the connection efficiency of the valve body 2 and the valve seat 1.

[0046] According to some embodiments of the present invention, the fluid inlet 211 is formed at one end of the valve body 21 away from the valve seat 1, the valve core assembly 4 includes a valve core 41 and an elastic return member 42 arranged along the axial direction of the valve body 2, the two ends of the elastic return member 42 are respectively connected to the valve seat 1 and the valve core 41, and the valve core 41 is movable along the axial direction of the valve body 2 to switch between a first position connecting the fluid inlet 211 and the fluid outlet 212 and a second position cutting off the fluid inlet 211 and the fluid outlet 212.

[0047] That is to say, the elastic reset member 42 is used to push the valve core 41 to remain in the second position. When the fluid flows from the fluid inlet 211 toward the valve cavity 3, the fluid exerts pressure on the valve core 41 and the valve core assembly 4, overcoming the friction of the valve core 41 and the elastic force of the elastic reset member 42, so that the valve core 41 moves from the second position to the first position, and then the fluid inlet 211 is connected with the flow outlet 212, and then the fluid at the fluid inlet 211 can enter the valve cavity 3 and leave through the fluid outlet 212; when the fluid pressure of the fluid inlet 211 acting on the valve core 41 disappears, the elastic reset member 42 restores the elastic deformation to push the valve core 41 to the second position, and then the fluid inlet 211 and the fluid outlet 212 are cut off. Therefore, the fluid can only flow from the fluid inlet 211 to the fluid outlet 212, which can prevent the fluid from flowing in the opposite direction.

[0048] In the axial direction of the valve body 2, the connection position between the connection surface and the connection lug 22 is located on the side of the valve core 41 in the second position away from the fluid inlet 211. That is, when the valve core 41 is in the second position, the connection position between the connection lug 22 and the valve seat 1 is located on the side of the fluid inlet 211 away from the valve core 41, that is, during the switching process of the valve core 41 between the first position and the second position, the connection position between the connection lug 22 and the valve seat 1 is always arranged with the valve core 41 along the axial direction of the valve body 2, so that the connection position between the connection lug 22 and the valve seat 1 can be better avoided from interfering with the movement of the valve core 41, thereby improving the reliability of the valve core 41. For example, when the valve body 2 and the valve seat 1 are welded, it can be avoided that the welding spots generated by welding block the movement of the valve core 41; when the valve body 2 and the valve seat 1 are riveted, it can be avoided that the area of ​​the valve body 2 near the connection position after riveting is deformed to hinder the movement of the valve core 41, thereby improving the reliability of the valve core 41.

[0049] According to some embodiments of the utility model, a mounting groove 11 is formed in the valve seat 1, and the mounting groove 11 has a mounting opening 12 opened toward the valve body 21, and one end of the valve body 21 facing the valve seat 1 is inserted into the mounting groove 11 through the mounting opening 12, and the connecting lug 22 is located in the mounting groove 11. That is, the valve body 21 and the valve seat 1 are plugged and matched, so that the pre-positioning of the valve body 21 and the valve seat 1 can be achieved in the process of connecting, so as to avoid the movement of the valve body 21 in the radial direction affecting the connection between the connecting lug 22 and the valve seat 1. Among them, the outer peripheral surface of the connecting lug 22 is welded to the inner peripheral surface of the mounting groove 11. That is, the connection position of the connecting lug 22 and the valve seat 1 is located on the side of the connecting lug 22 away from the valve body 21 in the axial direction of the valve body 21, which can better increase the distance between the connection position of the valve body 2 and the valve seat 1 and the valve cavity 3, thereby reducing the interference of the connection process of the valve body 2 and the valve seat 1 on the internal structure of the valve body 2, such as the valve core assembly 4, and improving the reliability of the valve 100.

[0050] In a specific example, in the axial direction of the valve body 2, the size of the connecting lug 22 is the same as the depth of the positioning groove 13, and the outer circumference of the connecting lug 22 is welded to the inner circumference of the positioning groove 13. In other words, the valve body 2 and the valve seat 1 are fixedly connected by welding the outer circumference of the connecting lug 22 and the inner circumference of the positioning groove 13 of the valve seat 1. By setting the size of the connecting lug 22 to be the same as the depth of the positioning groove 13, the connection area between the connecting lug 22 and the valve seat 1 can be increased, so as to improve the stability and reliability of the connection between the valve body 2 and the valve seat 1.

[0051] According to some embodiments of the utility model, a mounting groove 11 is formed in the valve seat 1, and the mounting groove 11 has a mounting opening 12 opened toward the valve body 21, and one end of the valve body 21 facing the valve seat 1 is inserted into the mounting groove 11 through the mounting opening 12, and the connecting lug 22 is located in the mounting groove 11, and the connecting lug 22 is riveted into the mounting groove 11. In other words, the valve body 2 is fixedly connected to the valve seat 1 by riveting the connecting lug 22 into the mounting groove 11 of the valve seat 1. Therefore, the time required for connecting the valve body 2 and the valve seat 1 is short, and a wide range of applicable materials are available, such as the valve body 2 can be a metal part or an injection-molded plastic part, which is conducive to improving the applicable scope and efficiency of the connection.

[0052] Specifically, the valve body 21 is inserted into the mounting groove 11 of the valve seat 1 through the mounting opening 12, the size of the connecting lug 22 in the axial direction of the valve body 2 is smaller than the depth of the mounting groove 11, the opening edge of the mounting groove 11 is bent toward the inside of the mounting groove 11 and is located on the side of the connecting lug 22 away from the groove bottom of the mounting groove 11, so that the connecting lug 22 can be restricted from coming out of the mounting groove 11 by the bent portion at the opening edge of the mounting groove 11. The bent portion can be formed into a right-angle step shape, that is, the bent portion is perpendicular to the axial direction of the valve body 2, and the side of the bent portion facing the connecting lug 22 can also be formed as an inclined surface extending obliquely toward the central axis of the valve body 2 in the direction from the groove bottom of the mounting groove 11 to the opening of the mounting groove 11, so as to ensure the limiting effect of the bent portion on the connecting lug 22.

[0053] In some embodiments, an annular guiding slope is formed at the opening of the mounting groove 11 in the axial direction of the valve body 2, and the guiding slope extends obliquely from the opening of the mounting groove 11 to the groove bottom of the mounting groove 11 toward the central axis of the valve body 2. In other words, when the valve body 21 is inserted into the mounting groove 11, the guiding slope can provide a guiding effect for the valve body 21, thereby increasing the positioning accuracy of the insertion of the valve body 21.

[0054] According to some embodiments of the utility model, the size of the connecting lug 22 in the radial direction of the valve body 2 is not less than 1 mm. In other words, the size of the connecting lug 22 in the radial direction of the valve body 2 is controlled to be equal to or greater than 1 mm. Therefore, on the basis of providing sufficient connection space between the connecting lug 22 and the valve seat 1, it is ensured that there is a sufficient safety distance between the connection position of the connecting lug 22 and the valve seat 1 and the valve cavity 3, thereby reducing the interference of the connection process between the valve body 2 and the valve seat 1 on the internal structure of the valve body 2 such as the valve core assembly 4, and improving the reliability of the valve 100. Among them, the size of the connecting lug 22 in the radial direction of the valve body 2 can be 1 mm, 1.5 mm, 2 mm, 3 mm, 4 mm, 5 mm, etc., and no specific limitation is made here.

[0055] In some embodiments, the ratio of the wall thickness of the connecting lug 22 to the wall thickness of the valve body 21 in the radial direction of the valve body 2 is 3-5. Wherein, on the basis of the wall thickness of the valve body 21 remaining unchanged, the smaller the ratio of the wall thickness of the connecting lug 22 to the wall thickness of the valve body 21 in the radial direction of the valve body 2, the smaller the size of the connecting lug 22 in the radial direction of the valve body 2, the lighter the weight of the connecting lug 22 and the less installation space it occupies, the closer the distance between the connection position and the valve body 21, and the fewer the connection positions of the connecting lug 22 and the valve seat 1; conversely, the larger the ratio of the wall thickness of the connecting lug 22 to the wall thickness of the valve body 21 in the radial direction of the valve body 2, the larger the size of the connecting lug 22 in the radial direction of the valve body 2, the greater the weight of the connecting lug 22 and the larger the installation space it occupies, the farther the distance between the connection position and the valve body 21, and the more the connection positions of the connecting lug 22 and the valve seat 1. Therefore, the ratio of the wall thickness of the connecting lug 22 and the valve body 21 in the radial direction of the valve body 2 is set within the range of 3 to 5, so as to avoid the connecting lug 22 being too heavy and occupying too much installation space, while ensuring that there is a sufficient safety distance between the connecting position of the connecting lug 22 and the valve seat 1 and the valve cavity 3, and ensuring sufficient connecting positions, thereby improving the reliability of the valve 100.

[0056] The ratio of the wall thickness of the connecting lug 22 to the wall thickness of the valve body 21 in the radial direction of the valve body 2 may be 3, 3.5, 4, 4.5, 5, etc., and is not specifically limited here. In a specific example, the wall thickness of the valve body 21 may be 0.3 mm, and the wall thickness of the connecting lug 22 in the radial direction of the valve body 2 may be 1 mm.

[0057] According to some embodiments of the utility model, the connecting lug 22 is in the shape of a ring surrounding the outer peripheral surface of the valve body 21. That is, the connecting lug 22 can form an annular connection structure with the valve seat 1, thereby increasing the connection area between the connecting lug 22 and the valve seat 1, thereby improving the stability and reliability of the connection between the valve seat 1 and the valve body 2. In addition, any point of the annular connecting lug 22 in the circumferential direction of the valve body 2 can be used to connect with the valve seat 1, which can reduce the difficulty of positioning the connecting lug 22 and the valve seat 1 in the circumferential direction of the valve body 2.

[0058] According to some embodiments of the present invention, a plurality of connecting lugs 22 are provided and arranged at intervals along the circumference of the valve body 21. That is, the valve body 2 can be fixed on the valve seat 1 by connecting the plurality of connecting lugs 22 to the valve seat 1. Therefore, the number of connection positions between the valve body 2 and the valve seat 1 can be increased, thereby improving the stability and reliability of the connection between the valve seat 1 and the valve body 2.

[0059] According to some embodiments of the utility model, the valve body 21 and the connecting lug 22 are integrally formed. Therefore, the integrally formed structure can not only ensure the structural and performance stability of the valve body 21 and the connecting lug 22, but also facilitate molding and simple manufacturing, and eliminate the assembly parts and connection procedures used for connecting the valve body 21 and the connecting lug 22, so that the production cost is low and the assembly efficiency of the valve body 21 and the connecting lug 22 is greatly improved, and the connection reliability of the valve body 21 and the connecting lug 22 is ensured. Moreover, the integrally formed structure has high overall strength and stability and a longer service life.

[0060] According to some embodiments of the utility model, a limited rotation protrusion 213 is formed on the inner circumferential surface of the valve body 21, and a limited rotation groove extending along the axial direction of the valve body 2 is formed on the valve core 41, and the limited rotation protrusion 213 is movably arranged in the limited rotation groove along the axial direction of the valve body 2. In other words, the limited rotation groove can better limit the axial movement of the limited protrusion 213 along the valve body 2, thereby ensuring the axial movement of the valve core 41 relative to the valve body 2 to improve the stability of the valve core assembly 4. At the same time, the valve core 41 can be prevented from rotating in the circumferential direction relative to the valve body 2, thereby preventing the fluid outlet 212 from being blocked when the valve core 41 rotates, thereby improving the efficiency of the fluid passing through the fluid outlet 212.

[0061] Reference below Figure 1-Figure 8 The valve 100 according to a specific embodiment of the present invention is described. It is worth noting that the following description is only exemplary and intended to be used to explain the present invention, and cannot be understood as limiting the present invention.

[0062] Embodiment 1

[0063] like Figure 1As shown, the valve 100 includes a valve seat 1, a valve body 2 and a valve core assembly 4. The valve body 2 includes a valve body 21 and a connecting lug 22. The valve body 21 is arranged at the upper end of the valve seat 1 and defines a valve cavity 3 together with the valve seat 1. The valve core assembly 4 is arranged in the valve cavity 3. The valve core assembly 4 includes a valve core 41 and an elastic return member 42. The upper end surface of the valve body 21 is formed with a fluid inlet 211 communicating with the valve cavity 3. The outer peripheral surface of the valve body 21 is formed with a fluid outlet 212 communicating with the valve cavity 3. The fluid outlet 212 is provided with A plurality of valves are arranged at intervals along the axial direction of the valve body 2 and are located above the valve seat 1. The valve core 41 is located below the fluid inlet 211. The outer peripheral surface of the valve core 41 is provided with a concave sealing member placement groove. A sealing member for sealing the valve core 41 and the inner peripheral surface of the valve body 21 at the first position is provided in the sealing member placement groove. The outer peripheral surface of the valve core 41 also forms a rotation-limiting groove extending along the axial direction of the valve body 2. A rotation-limiting protrusion 213 is formed on the inner side surface of the valve cavity 3. The valve core 41 includes a blocking portion and a plurality of legs. The blocking portion is used to close the fluid inlet. 211, a plurality of legs are arranged at intervals at the lower end of the blocking portion along the circumference of the valve body 2, and an upper placement groove is defined between the plurality of legs and the lower bottom surface of the blocking portion. The upper end of the elastic reset member 42 is inserted into the upper placement groove. The valve seat 1 is provided with a corresponding lower placement groove. A guide slope is provided at the opening of the lower placement groove. The lower end of the elastic reset member 42 is inserted into the lower placement groove. The connecting lug 22 is located on the outer circumferential surface of the valve body 21. The connecting lug 22 is in a ring shape surrounding the outer circumferential surface of the valve body 21. The connecting lug 22 It is formed by bending the lower end edge of the valve body 21 toward the outer peripheral side of the valve cavity 3, the connecting lug 22 is perpendicular to the axial direction of the valve body 2 and is located above the valve seat 1, and the portion of the end surface of the valve seat 1 facing the valve core and located on the outer peripheral side of the valve body 21 forms a connecting surface, and the bottom surface of the connecting lug 22 is welded to the connecting surface, and the end of the connecting lug 22 away from the valve body 2 protrudes from the outer peripheral surface of the valve seat 1 adjacent to the end of the valve body 2, and the portion of the connecting lug 22 protruding from the outer peripheral surface of the valve seat 1 and the valve seat 1 together define a sealing placement groove.

[0064] Embodiment 2

[0065] The structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are marked with the same reference numerals. Figure 2 The difference between the second embodiment and the first embodiment is that the upper end surface of the valve seat 1 is provided with a positioning groove 13 for accommodating the connecting lug 22, the connecting lug 22 is located in the positioning groove 13, the inner bottom surface of the positioning groove 13 constitutes the connecting surface, and the outer peripheral surface of the valve seat 1 is provided with a concave sealing member placement groove.

[0066] Embodiment 3

[0067] The structure of this embodiment is substantially the same as that of the second embodiment, wherein the same components are marked with the same reference numerals. Figure 3The difference between the third embodiment and the second embodiment is that the depth of the positioning groove 13 is deepened, so that when the valve core 41 moves, the connection position between the connecting lug 22 and the connecting surface is always located below the valve core 41, and the axial size of the connecting lug 22 in the valve body 2 is smaller than the depth of the positioning groove 13, and the opening of the positioning groove 13 is provided with a guiding inclined surface for guiding the insertion of the connecting lug 22.

[0068] Embodiment 4

[0069] The structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are marked with the same reference numerals. Figure 4 The difference between the fourth embodiment and the first embodiment is that a mounting groove 11 is formed in the valve seat 1, and the mounting groove 11 has an upwardly open mounting opening 12, the lower end of the valve body 2 is inserted into the mounting groove 11 through the mounting opening 12, the connecting lug 22 is located in the mounting groove 11, the axial dimension of the connecting lug 22 of the valve body 2 is consistent with the depth of the mounting groove 11, the outer circumferential surface of the connecting lug 22 is welded to the inner circumferential surface of the mounting groove 11, and the outer circumferential surface of the valve seat 1 is formed with a concave sealing member placement groove.

[0070] Embodiment 5

[0071] The structure of this embodiment is substantially the same as that of the fourth embodiment, wherein the same components are marked with the same reference numerals. Figure 5 The difference between the fifth embodiment and the fourth embodiment is that the connecting lug 22 is riveted in the mounting groove 11. Specifically, the axial dimension of the connecting lug 22 in the valve body 2 is smaller than the depth of the mounting groove 11, and the portion of the mounting groove 11 that is higher than the connecting lug 22 is bent toward the mounting groove 11. The bent portion at the opening edge of the mounting groove 11 can limit the connecting lug 22 from escaping from the mounting groove 11.

[0072] Embodiment 6

[0073] The structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are marked with the same reference numerals. Figure 6-7 The difference between the sixth embodiment and the first embodiment is that the connecting lug 22 is riveted to the valve seat 1, and the connecting lug 22 is formed by bending the edge of the fluid outlet 212 along the radial direction of the valve body 2 toward the direction away from the valve cavity 3. Specifically, a mounting groove 11 is formed in the valve seat 1, and the mounting groove 11 has an upwardly open mounting port 12. The lower end of the valve body 21 is inserted into the mounting groove 11 through the mounting port 12. The connecting lug 22 is located above the valve seat 1, and the connecting lug 22 is formed with a connecting hole. A connecting protrusion is provided on the connecting surface, and the connecting protrusion is penetrated into the connecting hole. The connecting protrusion is deformed by squeezing so that the size of the part of the connecting protrusion located on the upper side of the connecting hole is larger than the size of the connecting hole, thereby preventing the connecting protrusion from escaping from the connecting hole. The outer peripheral surface of the valve seat 1 is formed with a concave sealing member placement groove.

[0074] Embodiment 7

[0075] The structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are marked with the same reference numerals. Figure 8 The difference between the seventh embodiment and the first embodiment is that a mounting groove 11 is formed in the valve seat 1, and the mounting groove 11 has an upwardly open mounting opening 12, and the lower end of the valve body 21 is inserted into the mounting groove 11 through the mounting opening 12. The lower end edge of the valve body 21 is flanged twice, and the first 180° upward folding forms a part that is inserted into the mounting groove 11, and the second 90° folding in a direction away from the valve cavity 3 forms a connecting lug 22, which is perpendicular to the axial direction of the valve body 2 and is located above the valve seat 1.

[0076] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0078] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A valve (100), characterized in that: include: Valve seat (1); A valve body (2), comprising a valve body (21) and a connecting lug (22); the valve seat (1) is arranged at one end of the valve body (21) in the axial direction and defines a valve cavity (3) together with the valve body (21); a fluid inlet (211) and a fluid outlet (212) communicating with the valve cavity (3) are formed on the valve body (21); the connecting lug (22) is arranged on the outer peripheral surface of the valve body (21); the valve body (21) is connected to the valve seat (1) via the connecting lug (22); and the connection position between the connecting lug (22) and the valve seat (1) is located on the outer peripheral side of the valve body (21); A valve core assembly (4) is disposed in the valve cavity (3) and is used to control the connection or cutoff between the fluid inlet (211) and the fluid outlet (212).

2. The valve (100) according to claim 1, characterized in that: The connecting lug (22) is welded or riveted to the valve seat (1).

3. The valve (100) according to claim 1, characterized in that: In the axial direction of the valve body (2), one end of the valve seat (1) connected to the valve body (2) is formed with a connecting surface located on the outer peripheral side of the valve body main body (21), and the connecting lug (22) is arranged and connected to the connecting surface along the axial direction of the valve body (2).

4. The valve (100) according to claim 3, characterized in that: The connecting lug (22) and the valve seat (1) are stacked along the axial direction of the valve body (2).

5. The valve (100) according to claim 4, characterized in that: A mounting groove (11) is formed in the valve seat (1), and the mounting groove (11) has a mounting opening (12) open toward the valve body (21); one end of the valve body (21) facing the valve seat (1) is inserted into the mounting groove (11) through the mounting opening (12); the connecting lug (22) is located outside the mounting groove (11), and the outer peripheral edge of the mounting opening (12) constitutes the connecting surface.

6. The valve (100) according to claim 3, characterized in that: In the axial direction of the valve body (2), a positioning groove (13) for accommodating the connecting lug (22) is formed on the end surface of the valve seat (1) facing the valve body (21), and the inner bottom surface of the positioning groove (13) constitutes the connecting surface.

7. The valve (100) according to claim 3, characterized in that: The fluid inlet (211) is formed at one end of the valve body (21) away from the valve seat (1); the valve core assembly (4) comprises a valve core (41) and an elastic return member (42) arranged along the axial direction of the valve body (2); two ends of the elastic return member (42) are respectively connected to the valve seat (1) and the valve core (41); the valve core (41) is movable along the axial direction of the valve body (2) to switch between a first position connecting the fluid inlet (211) and the fluid outlet (212) and a second position blocking the fluid inlet (211) and the fluid outlet (212); in the axial direction of the valve body (2), the connection position between the connection surface and the connection lug (22) is located on a side of the valve core (41) in the second position away from the fluid inlet (211).

8. The valve (100) according to claim 1, characterized in that: A mounting groove (11) is formed in the valve seat (1), and the mounting groove (11) has a mounting opening (12) open toward the valve body (21); one end of the valve body (21) facing the valve seat (1) is inserted into the mounting groove (11) through the mounting opening (12), and the connecting lug (22) is located in the mounting groove (11), wherein: The outer circumferential surface of the connecting lug (22) is welded to the inner circumferential surface of the mounting groove (11); or, the connecting lug (22) is riveted into the mounting groove (11).

9. The valve (100) according to claim 1, characterized in that: The dimension of the connecting lug (22) in the radial direction of the valve body (2) is not less than 1 mm.

10. The valve (100) according to claim 1, characterized in that The connecting lug (22) is in a ring shape surrounding the outer peripheral surface of the valve body (21); or, a plurality of connecting lugs (22) are arranged at intervals along the circumference of the valve body (21).

11. The valve (100) according to claim 1, characterized in that: The valve body (21) and the connecting lug (22) are integrally formed; and or, a limited rotation protrusion (213) is formed on the inner circumferential surface of the valve body (21), and a limited rotation groove extending along the axial direction of the valve body (2) is formed on the valve core (41), and the limited rotation protrusion (213) is movably arranged in the limited rotation groove along the axial direction of the valve body (2).

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