Anti-rotation valve stem and valve core flexible connection mechanism

Abstract

This utility model relates to the field of valve technology, specifically to a flexible connection mechanism between a valve stem and a valve core. It includes a valve cover fixedly installed on the top of a valve body, a valve stem threaded onto the inner side of the valve cover, and a communication port on the inner side of the valve body. A valve core is movably installed on the inner top of the communication port. The valve stem head at the bottom of the valve stem is installed inside the valve core, allowing for flexible compression contact between the valve stem head and a rubber pad. A spring applies elastic pressure to the annular groove on the inner side of the valve stem head, flexibly connecting the valve stem head and the valve core. Rotating the valve stem downwards causes the valve core to contact and seal with the communication port, resulting in a good sealing effect. A fixing screw secures the mounting cover to the valve core, thus installing the valve stem and valve stem head inside the valve core. This flexible connection mechanism is simple to assemble, easy for operators to operate, and improves sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a flexible connection mechanism between an anti-rotation valve stem and a valve core. Background Technology

[0002] A search revealed a utility model patent for a flexible connection mechanism between a valve stem and valve core, with Chinese patent announcement number (CN209705282U). The patent addresses the technical problem of "Currently, in the valve field, the connection structure between the valve stem and valve core typically includes the following: 1. Integral structure; 2. Welded connection; 3. Pin connection; 4. Round nut fixing connection. Each of these structures has some drawbacks, briefly described below: The first type, the integral structure, has the disadvantage that the blank needs to be processed using an integral forging, integral casting, or a single bar. Whether forging or bar stock, there is significant material waste, while casting requires increased mold costs. Unless the production volume is very large, casting is not economical; moreover, the integral..." The one-piece valve core assembly is fixedly connected and cannot automatically align with the valve seat, thus requiring high precision in machining and assembly, resulting in high machining and assembly costs. The second type, welded connection, while offering higher raw material economy and less material waste, is uneconomical due to its fixed connection, requiring high precision in machining and assembly, leading to significant costs in these areas; furthermore, the risk of breakage due to welding quality issues is greatly increased. The third and fourth connection structures, while also offering higher raw material economy and less material waste, are uneconomical due to their fixed connection and high assembly requirements. Therefore, it can be concluded that all four connection methods require high precision in equipment machining and high precision in personnel assembly.

[0003] Therefore, as can be seen from the above-mentioned existing technologies, fixed connection structures have high assembly requirements, resulting in high requirements for both the processing precision of the equipment and the assembly requirements of the personnel for the above four connection methods. Utility Model Content

[0004] The purpose of this utility model is to provide a flexible connection mechanism between the anti-rotation valve stem and the valve core, which has the characteristics of low installation requirements and simple assembly.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flexible connection mechanism between an anti-rotation valve stem and a valve core, comprising a valve cover fixedly installed on the top of a valve body, a valve stem threadedly installed on the inner side of the valve cover, a communication port opened on the inner side of the valve body, a valve core movably installed on the top inner side of the communication port, a valve stem head fixedly sleeved on the inner side of the valve core, a rubber pad fixedly installed on the inner bottom wall of the valve core, an installation cover fixedly installed on the top of the valve core, and multiple springs fixedly installed on the bottom of the installation cover.

[0006] To facilitate media flow, in the preferred embodiment of the anti-rotation valve stem and valve core flexible connection mechanism of this utility model, the left end of the valve body is provided with an inlet and the right end of the valve body is provided with an outlet, and the inlet is connected to the outlet through a connecting port.

[0007] To facilitate flexible connection, in the preferred embodiment of the anti-rotation valve stem and valve core flexible connection mechanism of this utility model, an annular groove is provided on the upper surface of the valve stem head, the spring is positioned corresponding to the annular groove, and multiple springs are distributed in a circumferential array.

[0008] To facilitate assembly and installation, in the preferred embodiment of the anti-rotation valve stem and valve core flexible connection mechanism of this utility model, a fixing screw is installed through the inner side of the mounting cover, and the mounting cover is threadedly fixed to the valve core by the fixing screw.

[0009] To facilitate further assembly and installation, in the preferred embodiment of the anti-rotation valve stem and valve core flexible connection mechanism of this utility model, the lower end of the valve stem passes through the top of the mounting cover and is fixedly connected to the upper surface of the valve stem head, with a gap between the upper surface of the valve stem head and the lower surface of the mounting cover.

[0010] To facilitate further flexible connection, in the preferred embodiment of the anti-rotation valve stem and valve core flexible connection mechanism of this utility model, the upper surface of the rubber pad is in abutting contact with the lower surface of the valve stem head, and a gap is left between the outer circular surface of the valve stem head and the inner circular surface of the valve core.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] The valve stem head, located at the bottom of the valve stem, is installed inside the valve core. This allows for flexible compression contact between the valve stem head and the rubber pad. A spring then applies elastic pressure to the annular groove inside the valve stem head, ensuring a flexible connection between the valve stem head and the valve core. Rotating the valve stem downwards allows the valve core to contact and seal with the connecting port, resulting in a good seal. A fixing screw secures the mounting cover to the valve core, thus installing the valve stem and valve stem head inside the valve core. This flexible connection mechanism is simple to assemble, easy for operators to operate, and enhances the sealing performance. Attached Figure Description

[0013] Figure 1 This is a top-view perspective structural diagram of the present invention.

[0014] Figure 2 This is a top-down perspective view of the present invention.

[0015] Figure 3 This is a partial cross-sectional view of the present invention;

[0016] Figure 4This is a partially enlarged structural diagram of the present invention.

[0017] In the diagram: 1. Valve body; 2. Inlet; 3. Outlet; 4. Valve cover; 5. Valve stem; 6. Valve core; 7. Mounting cover; 8. Fixing screw; 9. Annular groove; 10. Spring; 11. Valve stem head; 12. Rubber pad; 13. Connecting port. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. In the description of this utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must be set in a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, in the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0019] Please see Figures 1 to 4 The anti-rotation valve stem and valve core flexible connection mechanism includes a valve cover 4 fixedly installed on the top of the valve body 1, a valve stem 5 threaded on the inner side of the valve cover 4, a communication port 13 opened on the inner side of the valve body 1, a valve core 6 movably installed on the top inner side of the communication port 13, a valve stem head 11 fixedly sleeved on the inner side of the valve core 6, a rubber pad 12 fixedly installed on the inner bottom wall of the valve core 6, an installation cover 7 fixedly installed on the top of the valve core 6, and multiple springs 10 fixedly installed on the bottom of the installation cover 7.

[0020] In this embodiment: by setting valve stem 5, valve core 6, mounting cover 7, and valve stem head 11, it is easy to fix the mounting cover 7 to the valve core 6 with fixing screws 8 during assembly, so that valve stem 5 and valve stem head 11 are installed in the valve core 6. With the flexible compression contact between valve stem head 11 and rubber pad 12, spring 10 applies elastic pressure to the annular groove 9 on the inner side of valve stem head 11, so that valve stem head 11 and valve core 6 are flexibly connected and installed. The flexible connection mechanism makes assembly simple and easy for operators to operate.

[0021] As a technical optimization of this utility model, the valve body 1 has an inlet 2 at the left end and an outlet 3 at the right end. The inlet 2 is connected to the outlet 3 through a connecting port 13.

[0022] In this embodiment, the inlet 2 and the outlet 3 are connected through the connecting port 13 to facilitate the transport of the medium, so that the medium enters through the inlet 2, passes through the connecting port 13, and is discharged through the outlet 3.

[0023] As a technical optimization of this utility model, an annular groove 9 is provided on the upper surface of the valve stem head 11, the spring 10 is positioned corresponding to the annular groove 9, and multiple springs 10 are distributed in a circumferential array.

[0024] In this embodiment: by setting spring 10, it is convenient to apply elastic pressure to valve stem head 11 through the installation of spring 10, so that valve stem head 11 is installed with elastic pressure above and rubber pad 12 below, so that the contact between valve stem head 11 and valve core 6 and mounting cover 7 is a flexible connection installation, avoiding the problem of high processing accuracy caused by fixed connection structure.

[0025] As a technical optimization of this utility model, a fixing screw 8 is installed through the inner side of the mounting cover 7, and the mounting cover 7 is fixedly installed to the valve core 6 by the fixing screw 8.

[0026] In this embodiment: by setting the fixing screw 8, the mounting cover 7 can be connected and installed with the valve core 6, the valve stem head 11 can be wrapped and installed, and the valve stem head 11 can be installed on the inner side of the valve core 6.

[0027] As a technical optimization of this utility model, the lower end of the valve stem 5 passes through the top of the mounting cover 7 and is fixedly connected to the upper surface of the valve stem head 11, with a gap between the upper surface of the valve stem head 11 and the lower surface of the mounting cover 7; the upper surface of the rubber pad 12 is in abutting contact with the lower surface of the valve stem head 11, with a gap between the outer circular surface of the valve stem head 11 and the inner circular surface of the valve core 6.

[0028] In this embodiment, by setting the gap between the valve stem head 11 and the inner circular surface of the valve core 6, and setting the gap between the upper surface of the valve stem head 11 and the mounting cover 7, the valve stem head 11 can be flexibly fine-tuned between the valve core 6 and the mounting cover 7, which facilitates the flexible connection and installation of the valve stem head 11 with the valve core 6 and the mounting cover 7.

[0029] Working principle: During assembly, place the valve stem head 11 at the bottom of the valve stem 5 into the valve core 6, and align the bottom of the valve stem head 11 with the rubber pad 12. Then, slip the mounting cover 7 onto the top of the valve stem 5, so that the spring 10 at the bottom of the mounting cover 7 aligns with the annular groove 9 above the valve stem head 11. Use fixing screws 8 to thread and fix the valve core 6 through the mounting cover 7. Then, insert the assembled valve core 6 and valve stem 5 through the top of the valve body 1, and then fit the valve cover 4 onto the valve stem 5. Fix the valve cover 4 at the top of the valve body 1. Since the valve stem head 11 and valve core 6 are connected flexibly, the installation requirements are low and the assembly is simple.

[0030] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as riveting and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Anti-rotation valve stem and valve core flexible connection mechanism, characterized in that: The valve includes a valve cover (4) fixedly installed on the top of the valve body (1), a valve stem (5) threaded on the inner side of the valve cover (4), a communication port (13) opened on the inner side of the valve body (1), a valve core (6) movably installed on the top inner side of the communication port (13), a valve stem head (11) fixedly sleeved on the inner side of the valve core (6), a rubber pad (12) fixedly installed on the inner bottom wall of the valve core (6), an installation cover (7) fixedly installed on the top of the valve core (6), and multiple springs (10) fixedly installed on the bottom of the installation cover (7).

2. The anti-rotation valve stem and valve trim flexible coupling mechanism of claim 1, wherein: The valve body (1) has an inlet (2) at the left end and an outlet (3) at the right end. The inlet (2) is connected to the outlet (3) through a connecting port (13).

3. The flexible connection mechanism between the anti-rotation valve stem and the valve core according to claim 1, characterized in that: The valve stem head (11) has an annular groove (9) on its upper surface. The spring (10) is positioned corresponding to the annular groove (9), and multiple springs (10) are arranged in a circular array.

4. The anti-rotation valve stem and valve trim flexible coupling mechanism of claim 1, wherein: A fixing screw (8) is installed through the inner side of the mounting cover (7), and the mounting cover (7) is threadedly fixed to the valve core (6) by the fixing screw (8).

5. The anti-rotation valve stem and valve trim flexible coupling mechanism of claim 1, wherein: The lower end of the valve stem (5) passes through the top of the mounting cover (7) and is fixedly connected to the upper surface of the valve stem head (11). A gap is left between the upper surface of the valve stem head (11) and the lower surface of the mounting cover (7).

6. The anti-rotation valve stem and valve trim flexible coupling mechanism of claim 1, wherein: The upper surface of the rubber pad (12) is in contact with the lower surface of the valve stem head (11), and there is a gap between the outer circular surface of the valve stem head (11) and the inner circular surface of the valve core (6).

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