Valve element positioning structure

Abstract

The utility model provides a valve core positioning structure which comprises a valve body, a middle seat, an end cover and a valve core, a connecting rod is installed in the middle seat and connected with the valve core, a positioning assembly is arranged in the end cover and comprises a spring, a positioning rod and a first limiting plate, one end of the positioning rod is connected with the valve core, and the other end of the positioning rod is provided with a protruding plate extending outwards in the radial direction. A first mounting groove is formed in the valve body, a second mounting groove is formed in the end cover, the first limiting plate is arranged in the first mounting groove, a first through hole is formed in the first limiting plate, a first concave table is arranged on the valve element, the first concave table is sleeved with the first limiting plate, and the positioning rod and the spring are arranged in the second mounting groove. And the spring is arranged between the first limiting plate and the convex plate. By means of the single spring structure, the valve element can return and position left and right, the spring is arranged in the end cover, the number of parts in the valve body is reduced, the length of the valve body can be shortened, and the occupied space of the valve body is reduced.

Description

Technical Field

[0001] This utility model relates to the field of directional valves, specifically a valve core positioning structure. Background Technology

[0002] Existing directional control valves use two springs to position the valve core from both ends. This requires a relatively long valve body, resulting in a large overall space requirement for the directional control valve. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a valve core positioning structure, including a valve body, a middle seat, an end cover, and a valve core. The valve core is disposed within the valve body, and the middle seat and end cover are respectively installed at both ends of the valve body. A connecting rod is installed inside the middle seat and connected to the valve core. A positioning assembly is disposed inside the end cover, comprising a spring, a positioning rod, and a first limiting plate. One end of the positioning rod is connected to the valve core, and the other end is provided with a convex plate extending radially outward. A first mounting groove is provided on the valve body, and a second mounting groove is provided inside the end cover. The first limiting plate is disposed within the first mounting groove and has a first through hole. A first recess is provided on the valve core, and the first limiting plate is fitted onto the first recess. The positioning rod and the spring are disposed within the second mounting groove, with the spring positioned between the first limiting plate and the convex plate.

[0004] Preferably, the positioning assembly further includes a second limiting plate, which has a second through hole. The second through hole is configured so that the positioning rod can pass through and hold the protrusion. A spring is disposed between the second limiting plate and the first limiting plate. The bottom of the second mounting groove has a movable groove for the protrusion to move.

[0005] Preferably, the positioning rod and the protruding plate are respectively set as the stud and nut of the bolt, and the valve core is provided with a threaded hole.

[0006] Preferably, the opening of the second mounting groove is provided with a movable part for the first limiting plate to move, and the first limiting plate is disposed in the movable part.

[0007] Preferably, the bottom of the first mounting groove is provided with a positioning groove for positioning the first limiting plate.

[0008] Preferably, the positioning rod and the valve core are connected by threads, and the end of the convex plate facing away from the positioning rod has an operating groove.

[0009] The beneficial effects of this utility model are as follows: When the valve core is positioned to the left, the spring pushes the convex plate, causing the positioning rod and valve core to return to the right; when the valve core is positioned to the right, the spring pushes the first limiting plate, causing the valve core to return to the right. Through the above design, the valve core can achieve left and right position return and positioning through a single spring structure. Moreover, the spring is set inside the end cover, reducing the number of components in the valve body, thus shortening the valve body length and reducing the space occupied by the valve body. Attached Figure Description

[0010] Figure 1 This is an overall structural diagram of the present invention;

[0011] Figure 2 for Figure 1 A magnified view of the marked area. Detailed Implementation

[0012] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0013] Please see Figures 1-2 This utility model provides a valve core 4 positioning structure, including a valve body 1, a middle seat 2, an end cover 3, and a valve core 4. The valve core 4 is disposed inside the valve body 1. The middle seat 2 and the end cover 3 are respectively installed at both ends of the valve body 1. A connecting rod 5 is installed inside the middle seat 2 and is connected to the valve core 4. A positioning component 6 is disposed inside the end cover 3. The positioning component 6 includes a spring 62, a positioning rod 63, and a first limiting plate 61. One end of the positioning rod 63 is connected to the valve core 4, and the other end is provided with a convex plate 64 extending radially outward. A first mounting groove 11 is provided on the valve body 1, and a second mounting groove 31 is provided inside the end cover 3. The first limiting plate 61 is disposed inside the first mounting groove 11 and has a first through hole. A first recess 41 is provided on the valve core 4, and the first limiting plate 61 is fitted onto the first recess 41. The positioning rod 63 and the spring 62 are disposed inside the second mounting groove 31, and the spring 62 is disposed between the first limiting plate 61 and the convex plate 64.

[0014] Furthermore, the positioning component 6 also includes a second limiting plate 65, on which a second through hole is provided. The second through hole is configured so that the positioning rod 63 can pass through and lock the protrusion 64. A spring 62 is provided between the second limiting plate 65 and the first limiting plate 61. A movable groove 66 for the protrusion 64 to move is provided at the bottom of the second mounting groove 31.

[0015] When the valve core 4 is positioned to the left, the spring 62 pushes the convex plate 64, causing the positioning rod 63 and the valve core 4 to return to the right; when the valve core 4 is positioned to the right, the spring 62 pushes the first limiting plate 61, causing the valve core 4 to return to the right. Through the above design, the valve core 4 can achieve left and right position return and positioning through a single spring 62 structure. Moreover, the spring 62 is set inside the end cover 3, which reduces the number of components inside the valve body 1, allowing the length of the valve body 1 to be shortened and the space occupied by the valve body 1 to be reduced.

[0016] Furthermore, the positioning rod 63 and the protruding plate 64 are respectively set as the stud and nut of the bolt, and the valve core 4 is provided with a threaded hole.

[0017] The positioning rod 63 and the convex plate 64 are constructed by bolts, and suitable standard parts can be used directly, eliminating the need to design and manufacture corresponding components, thus reducing costs.

[0018] Furthermore, the opening of the second mounting groove 31 is provided with a movable part 67 for the first limiting plate 61 to move, and the first limiting plate 61 is disposed in the movable part 67.

[0019] By restricting the range of motion of the first limiting plate 61 within the end cover 3, the length of the first mounting groove 11 can be shortened, thereby shortening the required length of the valve body 1 and reducing the overall space occupied.

[0020] Furthermore, the bottom of the first mounting groove 11 is provided with a positioning groove 68 for positioning the first limiting plate 61.

[0021] The first limiting plate 61 is positioned by the positioning groove 68 to prevent the first limiting plate 61 from shifting during use and affecting the normal operation of the component.

[0022] Furthermore, the positioning rod 63 is connected to the valve core 4 by a thread, and the end of the protrusion plate 64 facing away from the positioning rod 63 is provided with an operating groove 69.

[0023] The operation slot 69 allows for easy separation of the positioning rod 63 from the valve core 4 using tools, facilitating maintenance in case of malfunction.

[0024] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A valve core positioning structure, characterized in that: The valve body includes a valve body (1), a middle seat (2), an end cap (3), and a valve core (4). The valve core (4) is disposed inside the valve body (1). The middle seat (2) and the end cap (3) are respectively installed at both ends of the valve body (1). A connecting rod (5) is installed inside the middle seat (2) and is connected to the valve core (4). A positioning assembly (6) is disposed inside the end cap (3). The positioning assembly (6) includes a spring (62), a positioning rod (63), and a first limiting plate (61). One end of the positioning rod (63) is connected to the valve core (4), and the other end is provided with a radially outward extending... The valve body (1) has a first mounting groove (11) and the end cap (3) has a second mounting groove (31). The first limiting plate (61) is located in the first mounting groove (11) and has a first through hole. The valve core (4) has a first recess (41) and the first limiting plate (61) is fitted on the first recess (41). The positioning rod (63) and the spring (62) are located in the second mounting groove (31) and the spring (62) is located between the first limiting plate (61) and the convex plate (64).

2. The valve core positioning structure according to claim 1, characterized in that: The positioning component (6) further includes a second limiting plate (65), on which a second through hole is provided. The second through hole is configured so that the positioning rod (63) can pass through and hold the protrusion (64). The spring (62) is provided between the second limiting plate (65) and the first limiting plate (61). The bottom of the second mounting groove (31) is provided with a movable groove (66) for the protrusion (64) to move.

3. The valve core positioning structure according to claim 2, characterized in that: The positioning rod (63) and the convex plate (64) are respectively set as the stud and nut of the bolt, and the valve core (4) is provided with a threaded hole.

4. The valve core positioning structure according to claim 3, characterized in that: The opening of the second mounting groove (31) is provided with a movable part (67) for the first limiting plate (61) to move, and the first limiting plate (61) is disposed in the movable part (67).

5. A valve core positioning structure according to claim 2, characterized in that: The bottom of the first mounting groove (11) is provided with a positioning groove (68) for positioning the first limiting plate (61).

6. The valve core positioning structure according to claim 2, characterized in that: The positioning rod (63) is connected to the valve core (4) by a thread, and the end of the protruding plate (64) facing away from the positioning rod (63) is provided with an operating groove (69).

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