A valve stem designed to prevent seizing

Abstract

This utility model discloses a valve stem for preventing seizure, comprising a stem body, a threaded post fixedly connected to the bottom of the stem body, a first mounting post fixedly connected to the bottom of the threaded post, a first connecting post fixedly connected to the top of the stem body, a frustum-shaped post fixedly connected to the top of the first connecting post, a second connecting post fixedly connected to the top of the frustum-shaped post, and a second mounting post fixedly connected to the top of the second connecting post. The valve stem of this utility model, through its internally continuous lubrication channel design, can accurately deliver lubricant to key friction points such as threaded connections and component mating areas. Furthermore, the lubricant can be evenly distributed on the contact surface through a specific structure, avoiding the problems of easy lubricant loss and insufficient local lubrication in traditional lubrication methods. This forms long-lasting lubrication protection, significantly reducing the probability of seizure due to increased friction coefficient, and ensuring long-term smooth valve operation.

Description

Technical Field

[0001] This utility model relates to the field of dental comprehensive treatment machine technology, and in particular to a valve stem that prevents seizure. Background Technology

[0002] As the core transmission component of a valve, the valve stem is widely used in industries such as petroleum, chemical, water conservancy, and power. Its main function is to drive the valve core to move through rotation or axial movement, thereby realizing the opening, closing, or flow regulation of the valve.

[0003] Traditional lubrication of valve stems requires regular manual maintenance, which is labor-intensive and cumbersome. Furthermore, during manual lubrication, lubricant tends to concentrate in localized areas of the valve stem surface, failing to penetrate critical friction points such as threaded connections and deep-cavity fits. This results in these areas being chronically under-lubricated, increasing the coefficient of friction between the valve stem and mating parts, and making them prone to seizing. To address these issues, this application proposes a valve stem designed to prevent seizing. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a valve stem designed to prevent seizing. This valve stem, through its internally permeable lubrication channel design, can precisely deliver lubricant to key friction points such as threaded connections and component mating. Furthermore, the lubricant can be evenly distributed on the contact surface through a specific structure, avoiding the problems of easy lubricant loss and insufficient local lubrication in traditional lubrication methods. This forms a long-lasting lubrication protection, significantly reducing the probability of seizing due to increased friction coefficient, and ensuring long-term smooth valve operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A valve stem for preventing seizure includes a stem body, a threaded post fixedly connected to the bottom of the stem body, a first mounting post fixedly connected to the bottom of the threaded post, a first connecting post fixedly connected to the top of the stem body, a frustum-shaped post fixedly connected to the top of the first connecting post, a second connecting post fixedly connected to the top of the frustum-shaped post, and a second mounting post fixedly connected to the top of the second connecting post. Each of the stem body, threaded post, first connecting post, frustum-shaped post, second connecting post, and second mounting post has a communicating oil filling groove. The threaded post has multiple oil outlet holes, all of which communicate with the oil filling grooves.

[0007] Preferably, the outer wall of the threaded post is provided with external threads.

[0008] Preferably, the first mounting post has a through bolt mounting hole.

[0009] Preferably, the outer wall of the second mounting post is fixedly connected with a plurality of protrusions, the plurality of protrusions are distributed at equal intervals, and each of the protrusions is provided with a second mounting hole.

[0010] Preferably, the oil outlet holes are inclined, and the tops of the plurality of oil outlet holes are connected to the bottom of the oil filling groove.

[0011] Preferably, the outer walls of the rod, threaded column, first mounting column, first connecting column, frustum column, second connecting column, and second mounting column are all coated with a layer of PTFE.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. The valve stem, through its internally connected lubrication channel design, can accurately deliver lubricant to key friction points such as threaded connections and component mating. Furthermore, the lubricant can be evenly distributed on the contact surface through a specific structure, avoiding the problems of easy lubricant loss and insufficient local lubrication in traditional lubrication methods. This forms a long-lasting lubrication protection, significantly reducing the probability of seizing due to increased friction coefficient, and ensuring smooth operation of the valve over a long period of time.

[0014] 2. A special coating is applied to the outer wall of each component of the valve stem. This coating can directly reduce the coefficient of friction between the valve stem and the mating parts, reduce the risk of direct contact and adhesion between metals, and resist media corrosion and mechanical stress impact. It avoids the defects of easy peeling of coatings in traditional surface treatment technology, effectively slows down the wear rate of the valve stem, significantly extends the service life of the valve stem and even the entire valve, and reduces equipment replacement and maintenance costs.

[0015] 3. Through reasonable connection and support design, the valve stem components not only achieve stable assembly of each part, but also ensure uniform force distribution during rotation or axial movement of the valve stem through the coordinated cooperation between the components, avoiding component deformation or accelerated wear caused by local stress concentration.

[0016] In summary, the valve stem, through its internally continuous lubrication channel design, can precisely deliver lubricant to key friction points such as threaded connections and component mating. Furthermore, the lubricant can be evenly distributed on the contact surface through a specific structure, avoiding the problems of easy lubricant loss and insufficient local lubrication in traditional lubrication methods. This forms a long-lasting lubrication protection, significantly reducing the probability of seizing due to increased friction coefficient, and ensuring long-term smooth valve operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a valve stem designed to prevent seizing according to the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of a valve stem designed to prevent seizing according to the present invention.

[0019] In the diagram: 1 rod, 2 threaded post, 3 first mounting post, 4 first connecting post, 5 frustum post, 6 second connecting post, 7 second mounting post, 8 oil inlet groove, 9 oil outlet hole, 10 bolt mounting hole, 11 protrusion, 12 second mounting hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-2 A valve stem designed to prevent seizing includes a stem body 1, which serves as the main structure of the valve stem, connecting and supporting various components for coordinated operation. A threaded post 2 is fixedly connected to the bottom of the stem body 1. The threaded post 2 achieves a threaded connection between the valve stem and the valve body through external threads on its outer wall, facilitating assembly and adjustment. The outer wall of the threaded post 2 is provided with external threads. A first mounting post 3 is fixedly connected to the bottom of the threaded post 2. The first mounting post 3 achieves a fixed connection between the bottom of the valve stem and other components through bolt mounting holes 10. Bolt mounting holes 10 are provided through the first mounting post 3 for inserting bolts to fix the first mounting post 3. The cooperation between the first mounting post 3 and the bolt mounting holes 10 achieves the installation and fixation of the sealing element.

[0022] The top of the rod body 1 is fixedly connected to a first connecting post 4, which connects the rod body 1 to the frustum column 5 and transmits force. The top of the first connecting post 4 is fixedly connected to the frustum column 5, which provides a transition between the first connecting post 4 and the second connecting post 6, optimizing the force transmission path. The top of the frustum column 5 is fixedly connected to the second connecting post 6, which connects the frustum column 5 to the second mounting post 7, serving as an intermediate transition. The top of the second connecting post 6 is fixedly connected to the second mounting post 7. The second mounting post 7 connects the top of the valve stem to the drive component through a protrusion 11 and a second mounting hole 12. The outer wall of the second mounting post 7 is fixedly connected to multiple protrusions 11, which provide a base for the second mounting hole 12, enhancing installation stability. The multiple protrusions 11 are evenly spaced, and each protrusion 11 has a second mounting hole 12. The second mounting hole 12 is used to pass through a connector to fix the second mounting post 7 to the external component. The cooperation of the protrusions 11 and the second mounting hole 12 allows for installation and fixation with the handwheel and also seals the oil filling groove 8.

[0023] The rod body 1, threaded column 2, first connecting column 4, frustum column 5, second connecting column 6, and second mounting column 7 are all equipped with interconnected oil filling grooves 8. These grooves 8 store and transport lubricant, providing lubrication channels for each component. The threaded column 2 has multiple oil outlet holes 9, which guide the lubricant from the oil filling grooves 8 to the external thread surface of the threaded column 2. All oil outlet holes 9 are connected to the oil filling grooves 8, are angled, and their tops are connected to the bottom of the oil filling grooves 8, ensuring that the lubricant can flow smoothly from the oil filling grooves 8 into the oil outlet holes 9.

[0024] The outer walls of rod 1, threaded post 2, first mounting post 3, first connecting post 4, frustum post 5, second connecting post 6, and second mounting post 7 are all coated with a layer of PTFE. The PTFE coating reduces the coefficient of friction between each component and mating part, reduces wear, and prevents seizing.

Claims

1. A valve stem to prevent galling, comprising a stem body (1), characterized in that, The bottom of the rod (1) is fixedly connected to a threaded column (2), the bottom of the threaded column (2) is fixedly connected to a first mounting column (3), the top of the rod (1) is fixedly connected to a first connecting column (4), the top of the first connecting column (4) is fixedly connected to a frustum column (5), the top of the frustum column (5) is fixedly connected to a second connecting column (6), the top of the second connecting column (6) is fixedly connected to a second mounting column (7), and each of the rod (1), threaded column (2), first connecting column (4), frustum column (5), second connecting column (6) and second mounting column (7) has a connected oil filling groove (8), and the threaded column (2) has multiple oil outlet holes (9), all of which are connected to the oil filling groove (8).

2. A valve stem to prevent galling according to claim 1, wherein The outer wall of the threaded column (2) is provided with external threads.

3. A valve stem to prevent galling as defined in claim 1, wherein The first mounting post (3) has a through bolt mounting hole (10).

4. A valve stem to prevent galling according to claim 1, wherein The outer wall of the second mounting post (7) is fixedly connected with a plurality of protrusions (11), the plurality of protrusions (11) are distributed at equal intervals, and each of the protrusions (11) is provided with a second mounting hole (12).

5. A valve stem for preventing seizure according to claim 1, characterized in that, The oil outlet (9) is inclined, and the top of each of the multiple oil outlets (9) is connected to the bottom of the oil injection groove (8).

6. A valve stem for preventing seizure according to claim 1, characterized in that, The outer walls of the rod (1), threaded column (2), first mounting column (3), first connecting column (4), frustum column (5), second connecting column (6), and second mounting column (7) are all coated with a layer of PTFE.

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