Switching mechanism and valve

Abstract

The switching mechanism comprises a valve element, the valve element is provided with a sealing face, a long-strip-shaped hole and a cam structure, and the cam structure is provided with a convex part; the rotating disc is provided with a concave part, the side wall of the concave part is provided with a convex structure matched with the cam structure, and the rotating disc is provided with a first connecting structure; the handle is provided with a second connecting structure connected with the first connecting structure and a column body connected with the long-strip hole in a sliding mode; when the handle drives the second connecting structure to rotate through the first connecting structure, the protruding part and the outer protruding structure abut against each other and slide relative to each other, and therefore the long-strip-shaped hole slides relative to the column body. The switching mechanism and the valve are simple in structure and good in sealing performance.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a switch mechanism and a valve. Background Art

[0002] In a fluid system, a valve is a device used to control the direction, pressure, and flow of the fluid, so that the medium (liquid, gas, powder) in the piping and equipment can flow or stop and control its flow.

[0003] When the current valve is switched, the valve core rotates to engage or disengage with the valve inlet, opening or closing the inlet. However, in the process of the valve core rotating and contacting the valve inlet, in order to achieve the reliability of closing, there will be a large friction between the valve core and the valve inlet, which will cause wear. As time goes by, the wear will continue to expand, affecting the sealing in the closed state and the reliability of the closing function. Utility Model Content

[0004] The present application provides a switch mechanism and a valve with a simple structure, which can reduce wear and tear and increase product life.

[0005] In a first aspect, the present application provides a switch mechanism, comprising:

[0006] A valve core having a sealing surface, an elongated hole and a cam structure, wherein the cam structure has a convex portion;

[0007] A rotating disk is provided with a concave portion, a side wall of the concave portion is provided with an outer convex structure for cooperating with the cam structure, and the rotating disk has a first connecting structure;

[0008] A handle, comprising a second connection structure connected to the first connection structure and a column slidably connected to the elongated hole;

[0009] Among them, when the handle drives the turntable to rotate through the first connecting structure and the second connecting structure, the valve core has a first transmission state in which the turntable rotates, and a second transmission state in which the convex portion abuts against the outer convex structure and slides relatively, and the elongated hole slides relative to the column.

[0010] By adopting the above technical solution, when the handle drives the turntable to rotate, the turntable can drive the valve core to rotate together, and can also drive the valve core to move relative to the turntable. This switch mechanism changes the traditional valve's single rotational motion to achieve the valve switch drive structure, and through the combined motion of rotation and movement, it reduces the inevitable wear caused by the single rotation mode. While the structure is simple and the number of parts is small, the service life of the accessories is increased.

[0011] In combination with the first aspect, a further solution is that the cam structure is connected to an elastic member, and the side wall of the turntable is provided with a concave structure for connecting with the elastic member, when the end of the elastic member is located in the concave structure, the valve core and the turntable are in a relatively stable state; when the handle drives the turntable to rotate through the first connecting structure and the second connecting structure, the end of the elastic member has a clutch connection relationship with the concave structure.

[0012] By adopting the above technical solution, the elastic member and the cam structure can be an integrated structure, or they can be designed separately and fixedly connected by assembly. The elastic member is conducive to applying elastic force between the cam structure and the turntable, which can maintain the reliability of the first transmission state when the end of the elastic member is located in the concave structure, increase the resistance of the second transmission state to the first transmission state, and improve the sealing performance, so that the first transmission state and the second transmission state are more reliable and stable.

[0013] In combination with the first aspect, in a further solution, a limiting portion is further provided on the side wall of the recess, and a groove that can accommodate the convex portion is formed between the limiting portion and the external convex structure, and when the convex portion is located in the groove, the end of the elastic member is located in the internal concave structure.

[0014] By adopting the above technical solution, the limiting part can limit the convex part, which is convenient for the installation and positioning of the valve core and the turntable and the transmission of the force between the turntable and the valve core, and is beneficial to the stability of the first transmission state between the valve core and the turntable. The convex part is located in the groove, and the end of the elastic member is located in the concave structure, so that the turntable drives the valve core to rotate synchronously more reliably, and improves a certain degree of anti-rotation resistance.

[0015] In combination with the first aspect, in a further solution, the outer convex structure is provided with a sliding surface, and when the convex portion slides along the sliding surface, the column slides relative to the elongated hole.

[0016] By adopting the above technical solution, in the second transmission state, the valve is closed, and the sliding surface is conducive to reducing the movement resistance. The convex part slides along the sliding surface, so that the valve core and the turntable move relative to each other, and the column slides in the long hole to guide the movement of the valve core relative to the turntable, thereby improving the reliability and stability of the movement.

[0017] In combination with the first aspect, in a further solution, the outer convex structure is further provided with a stabilizing surface connected to the sliding surface, and when the convex portion slides to the stabilizing surface, the valve core and the turntable are in a relatively stable state.

[0018] By adopting the above technical solution, after the second transmission state ends, the valve is in a closed state, and the stabilizing surface is conducive to the stability of the lifting state, thereby increasing the sealing and reliability of the valve core in the closed state.

[0019] In combination with the first aspect, in a further solution, the convex structure further includes a stopper, and the stopper is located at an end of the stable surface away from the sliding surface.

[0020] By adopting the above technical solution, the stopper can limit the rotational movement of the convex part, thereby improving the accuracy of the position of the valve core in the closed state.

[0021] In a second aspect, the present application provides a valve comprising the switch mechanism as described in the first aspect.

[0022] In combination with the second aspect, a further solution also includes a valve body, which is provided with a cavity for accommodating the valve core and the turntable, the cavity is connected with an inlet and an outlet, and the valve body is also provided with an axial hole pivotally connected to the handle, and a pivot structure rotatably connected to the valve core is connected to the valve body on the side opposite to the axial hole.

[0023] By adopting the above technical solution, the pivot structure is beneficial to the stability of the rotation of the bottom of the valve core, the handle passes through the shaft hole and is connected to the turntable in the cavity, the turntable is connected to the valve core, the handle drives the upper part of the valve core to move through the turntable, and the valve core realizes the connection and shutdown between the valve inlet and outlet by switching the inlet or outlet.

[0024] In combination with the second aspect, a further solution is that, under the drive of the handle, the valve core has a first motion state in which the turntable rotates relative to the valve body, and a second motion state in which the valve core moves relative to the turntable and the sealing surface closes the inlet or outlet.

[0025] By adopting the above technical solution, in the first motion state, there is less contact between the valve core and the valve body, so the friction is small. The second motion state is the valve closed and sealed state. In this state, the valve core moves relative to the valve body, and the valve core squeezes and seals the valve body, which has relatively small wear. In the first and second motion states, there is little friction between the valve core and the valve body, so the product has a long life and good sealing performance.

[0026] In combination with the second aspect, a further solution is provided, in the first movement state, the end of the elastic member is located in the concave structure; in the second movement state, the end of the elastic member is separated from the concave structure and abuts against the side wall of the turntable, and the convex portion slides along the sliding surface.

[0027] By adopting the above technical solution, the elastic member improves the stability and reliability of the first motion state and the second motion state.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] 1. The switch mechanism of the present application reduces the inevitable wear caused by a single rotation mode through the combined motion of rotation and movement. It has a simple structure with fewer parts and improves the life of the accessories.

[0030] 2. The switch mechanism of the present application has a more reliable structure, simpler and more convenient operation, and more stable performance.

[0031] 3. The valve applied for is simple and convenient to operate, the valve opening and closing is more reliable and stable, and the service life is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of an embodiment of the switch mechanism of the present application;

[0033] Figure 2 It is a three-dimensional structural schematic diagram of the valve core of the switch mechanism of the present application;

[0034] Figure 3 It is a top view of the valve core of the switch mechanism of the present application;

[0035] Figure 4 It is a structural schematic diagram of the switch mechanism turntable of the present application;

[0036] Figure 5 is a top view of the rotary disk of the switch mechanism of the present application;

[0037] Figure 6 It is a structural schematic diagram of the handle of the switch mechanism of the present application;

[0038] Figure 7 It is a structural schematic diagram of the valve of the present application;

[0039] Figure 8 It is a schematic diagram of the exploded structure of the valve of the present application;

[0040] Fig. 9 This is a schematic diagram of the exploded structure of the valve of the present application from another angle;

[0041] Fig.10 It is a structural schematic diagram of the valve seat of this application;

[0042] Fig.11 It is a structural schematic diagram of the valve seat of the present application from another angle.

[0043] Reference numerals:

[0044] 1. Valve core; 11. Sealing surface; 12. Cam structure; 121. Protrusion; 122. Positioning column; 123. Limiting groove; 124. Stop column; 13. Long hole; 14. Connecting column; 15. Channel; 16. Blind hole; 2. Turntable; 21. Keyway; 22. Concave; 221. Arc groove; 222. Positioning rib; 223. Stopper; 224. Stable surface; 225. Sliding surface; 226. Groove; 227. Limiting part; 23. Protruding rib; 3. Handle; 31. Handle rod; 32. Spline; 33. Column; 34. Ring groove; 4. Spring; 5. Valve body; 51. Cavity; 52. Upper shaft hole; 53. Inlet; 54. Outlet; 55. Lower shaft hole; 56. Stopper; 57. Protrusion; 6. Rotating shaft; 61. Sealing groove. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. The components of the embodiments of the utility model described and shown in the drawings herein can be arranged and designed in various different configurations. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0046] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0049] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0050] Embodiment 1

[0051] See also Figure 1 , discloses a structure of an embodiment of a switch mechanism, the switch mechanism includes a valve core 1, a turntable 2 and a handle 3. The valve core 1 has a sealing surface 11, an elongated hole 13 and a cam structure 12, the cam structure 12 has a convex portion 121, and the cam structure 12 is also connected to an elastic member, and the elastic member in this embodiment is a spring 4. The turntable 2 has a first connection structure, and the first connection structure in this embodiment is a keyway 21. The handle 3 includes a second connection structure connected to the keyway 21 and a column 33 slidably connected to the elongated hole 13, and the second connection structure is a spline 32. The turntable 2 is connected to the cam structure 12, the spline 32 of the handle 3 cooperates with the keyway 21, and the column 33 passes through the keyway 21 and is slidably connected to the elongated hole 13.

[0052] When the handle 3 drives the turntable 2 to rotate through the spline 32 and the keyway 21, the valve core 1 has a first transmission state in which it rotates with the turntable 2, and a second transmission state in which the long hole 13 slides relative to the column 33 so that the valve core 1 and the turntable 2 move relative to each other.

[0053] See also Figure 1-Figure 3 The valve core 1 has a plane adjacent to the sealing surface 11, and the cam structure 12 is integrally arranged on the plane. The cam structure 12 includes a convex portion 121 and a positioning column 122, a stop column 124, and a limit groove 123 for positioning the spring 4. The spring 4 has two free ends, and the two free ends and the cam are used to abut against the rotating disk 2 to realize the conversion between the first transmission state and the second transmission state. The valve core 1 is also provided with a connecting column 14 and a channel 15. The channel 15 runs through the entire valve core 1. A blind hole 16 is provided on the side of the valve core 1 opposite to the cam structure 12.

[0054] See also Figure 3 and Figure 4 The turntable 2 is provided with a recess 22, and the side wall of the recess 22 is provided with an outer convex structure for cooperating with the cam structure 12, and the outer convex structure is provided with a sliding surface 225. When the convex part 121 slides along the sliding surface 225, the column 33 slides relative to the long strip hole 13. The outer convex structure is also provided with a stabilizing surface 224 connected to the sliding surface 225. When the convex part 121 slides to the stabilizing surface 224, the valve core 1 and the turntable 2 are in a relatively stable state. The outer convex structure also includes a stopper 223, and the stopper 223 is located at one end of the stabilizing surface 224 away from the sliding surface 225. The side wall of the recess 22 is also provided with a limiting part 227, and a groove 226 that can accommodate the convex part 121 is formed between the limiting part 227 and the outer convex structure.

[0055] See also Figure 4 and Figure 5The side wall of the turntable 2 is provided with an inner concave structure for connecting with the elastic member, and the inner concave structure is an arc groove 221. The side wall of the recess 22 is also provided with a positioning rib 222, and a metal strip can be arranged inside the positioning rib 222 to enhance the strength of the side wall of the recess 22. The outer edge of the keyway 21 on the bottom surface of the recess 22 is provided with a convex rib 23, combined with Figure 3 The convex rib 23 abuts against the cam structure 12, thereby reducing the friction between the valve core 1 and the rotary disk 2 by reducing the contact area, thereby improving the smoothness of the relative movement.

[0056] See also Figure 1 and Figure 4 The arc groove 221 is used to be connected to the two free ends of the spring 4 in a disengageable manner. When the protrusion 121 is located in the groove 226, the end of the elastic member is located in the concave structure. When the handle 3 drives the turntable 2 to rotate through the first connection structure and the second connection structure, the end of the elastic member has a disengageable connection relationship with the concave structure. When the end of the elastic member is located in the arc groove 221, the valve core 1 and the turntable 2 are in a relatively stable state, and the rotation of the handle 3 can drive the turntable 2 and the valve core 1 to rotate together to form a first transmission state. When the protrusion 121 slides along the sliding surface 225, the two free ends of the spring 4 detach from the two arc grooves 221 and slide in contact with the side walls of the concave portion 22. At the same time, the column 33 of the handle 3 slides in the long hole 13, and the valve core 1 moves relative to the turntable 2 to form a second transmission state.

[0057] See also Figure 6 The handle 3 includes a handle rod 31 and an integrally connected spline 32 and a main body. The handle 3 is also provided with an annular groove 34. An O-ring can be provided in the annular groove 34 to increase the sealing between the handle 3 and the valve core 1.

[0058] Embodiment 2

[0059] See also Figure 7-Figure 11 This embodiment provides a valve, including a valve body 5 and the switch mechanism in the first embodiment. The valve body 5 is provided with a cavity 51 for accommodating the valve core 1 and the rotary disk 2, and the cavity 51 is connected with an inlet 53 and an outlet 54. The valve body 5 is also provided with an upper shaft hole 52 pivotally connected to the handle 3, and the valve body 5 is also provided with a lower shaft hole 55 coaxial with the upper shaft hole 52 on one side opposite to the upper shaft hole 52. A rotating shaft 6 is provided in the lower shaft hole 55, and the rotating shaft 6 passes through the lower shaft hole 55 and extends into the valve body 5 to be pivotally connected to the blind hole 16 of the valve core 1.

[0060] When the handle 3 is driven by rotation, the valve core 1 has a first motion state in which the valve core 1 rotates with the rotary disk 2 relative to the valve body 5 and a second motion state in which the valve core 1 moves relative to the rotary disk 2 and the sealing surface 11 closes the inlet 53 or the outlet 54 .

[0061] In the first movement state, the end of the elastic member is located in the concave structure; in the second movement state, the end of the elastic member is separated from the concave structure and abuts against the side wall of the turntable 2 , and the convex portion 121 slides along the sliding surface 225 .

[0062] See also Figure 7 and Figure 8 The valve core 1 is arranged in the cavity 51 of the valve body 5, the lower part of the valve core 1 is pivotally connected to the rotating shaft 6, and the upper part is transmission-connected to the rotating disk 2 through the cam structure 12. The handle 3 passes through the upper shaft hole 52 and extends into the cavity 51 to be matched and connected with the keyway 21 of the rotating disk 2, and the column 33 extends into the long strip hole 13 and is slidably connected with the valve core 1.

[0063] See also Figure 8-Figure 11 When the channel 15 is connected to the inlet 53 and the outlet 54, it is in the open state. The handle 3 drives the turntable 2 to rotate until the sealing surface 11 of the valve core 1 faces the inlet 53. The valve core 1 rotates with the turntable 2 around the shaft 6 in the first movement state. When the sealing surface 11 of the valve core 1 faces the inlet 53, the valve core 1 moves relative to the turntable 2 in the second movement state, and the sealing surface 11 squeezes the inlet 53 to seal, and the inlet 53 and the outlet 54 are separated to close the valve. In order to increase the sealing performance, a sealing ring is provided at the position where the inlet 53 and the sealing surface 11 of the valve core 1 cooperate.

[0064] See also Fig.10 and Fig.11 Two stops 56 are also provided on the outer side of the upper shaft hole 52 of the valve body 5 , and the stops 56 are used to limit the rotation range of the handle 3 .

[0065] See also Fig. 9 and Fig.11 A protrusion 57 is also provided in the cavity 51 , and the protrusion 57 is used to limit the rotation range of the valve core 1 .

[0066] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes, modifications, substitutions and variants, and these changes, modifications, substitutions and variants all fall within the scope of the utility model claimed for protection.

Claims

1. A switch mechanism, It is characterized in that include: A valve core (1) having a sealing surface (11), an elongated hole (13) and a cam structure (12), wherein the cam structure (12) has a convex portion (121); The rotating disk (2) is provided with a recess (22), the side wall of the recess (22) is provided with an outer convex structure for cooperating with the cam structure (12), and the rotating disk (2) has a first connection structure; A handle (3) comprising a second connection structure connected to the first connection structure and a column (33) slidably connected to the elongated hole (13); When the handle (3) drives the turntable (2) to rotate via the first connecting structure and the second connecting structure, the valve core (1) has a first transmission state in which it rotates along with the turntable (2), and a second transmission state in which the convex portion (121) abuts against and slides relative to the outer convex structure, and the elongated hole (13) slides relative to the column (33).

2. The switch mechanism according to claim 1, It is characterized in that The cam structure (12) is connected to an elastic member, and the side wall of the rotating disk (2) is provided with a concave structure for connecting to the elastic member. When the end of the elastic member is located in the concave structure, the valve core (1) and the rotating disk (2) are in a relatively stable state; when the handle (3) drives the rotating disk (2) to rotate through the first connecting structure and the second connecting structure, the end of the elastic member and the concave structure have a clutch connection relationship.

3. The switch mechanism according to claim 2, It is characterized in that The side wall of the recessed portion (22) is also provided with a limiting portion (227), and a groove (226) capable of accommodating the convex portion (121) is formed between the limiting portion (227) and the outer convex structure; when the convex portion (121) is located in the groove (226), the end of the elastic member is located in the inner recessed structure.

4. The switch mechanism according to claim 2, It is characterized in that The outer convex structure is provided with a sliding surface (225), and when the convex portion (121) slides along the sliding surface (225), the column (33) slides relative to the elongated hole (13).

5. The switch mechanism according to claim 4, It is characterized in that The outer convex structure is also provided with a stabilizing surface (224) connected to the sliding surface (225); when the convex portion (121) slides to the stabilizing surface (224), the valve core (1) and the rotating disk (2) are in a relatively stable state.

6. The switch mechanism according to claim 5, It is characterized in that The outer convex structure further comprises a stopper (223), wherein the stopper (223) is located at an end of the stable surface (224) away from the sliding surface (225).

7. A valve, It is characterized in that The invention comprises a switch mechanism as claimed in any one of claims 1 to 6.

8. A valve according to claim 7, It is characterized in that The valve body (5) further comprises a valve body (5), wherein the valve body (5) is provided with a cavity (51) for accommodating the valve core (1) and the turntable (2), wherein the cavity (51) is connected with an inlet (53) and an outlet (54), and the valve body (5) is further provided with an axial hole pivotally connected to the handle (3), and a pivot structure pivotally connected to the valve core (1) is connected to the valve body (5) on the side opposite to the axial hole.

9. A valve according to claim 8, It is characterized in that When driven by the handle (3), the valve core (1) has a first motion state in which it rotates with the turntable (2) relative to the valve body (5), and a second motion state in which the valve core (1) moves relative to the turntable (2) and the sealing surface (11) closes the inlet (53) or the outlet (54).

10. A valve according to claim 9, It is characterized in that In the first movement state, the end of the elastic member is located in the concave structure; in the second movement state, the end of the elastic member is separated from the concave structure and abuts against the side wall of the turntable (2), and the convex portion (121) slides along the sliding surface (225).

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