Valve rod nut of rising stem gate valve

Abstract

The utility model discloses a rising stem gate valve rod nut, and relates to the technical field of valve rod nuts. Comprising a fixing ring, and a connecting seat is arranged on the outer side of the fixing ring; the lubricating mechanism is arranged in the fixing ring and used for lubricating the valve rod, the lubricating mechanism comprises a rotating piece and a lubricating piece, the rotating piece is arranged in the fixing ring and used for storing oil liquid, the lubricating piece is arranged on the outer side of the rotating piece and used for controlling the oil liquid, and the rotating piece is matched with the lubricating piece to coat the valve rod with the oil liquid. The rotating piece comprises a rotating column, and the rotating column rotates in the fixing ring. Through the arrangement of the rotating piece and the lubricating piece, the valve rod is coated with oil in the moving process through the cooperation of the rotating column, the oil storage groove, the sealing ring, the oil outlet hole, the connecting plate, the communicating groove and the ball, the situation that the surface of the valve rod is gradually rusted due to the fact that lubricating grease on the outer side of the valve rod loses efficacy is avoided, and then the gate valve opening and closing control difficulty is lowered.

Description

Technical Field

[0001] This utility model relates to the field of valve stem nut technology, specifically to a valve stem nut for a rising stem gate valve. Background Technology

[0002] A rising stem gate valve is mainly composed of a valve body, a valve stem, a gate, a handwheel, and other components. The valve stem is exposed, and a handwheel or other driving device is installed on its top. The valve stem and the gate are connected by threads. The valve stem is usually also equipped with a threaded sleeve to ensure movement stability. By rotating the handwheel, the valve stem is driven to make linear movement, thereby realizing the raising and lowering of the gate and achieving the purpose of opening and closing the valve.

[0003] When a rising stem gate valve is in operation, the valve stem is exposed to the external environment for a long time. Over time, the grease on the outside of the valve stem will fail, causing the valve stem surface to gradually corrode. This increases the difficulty of opening and closing the gate valve. To address this issue, a valve stem nut for rising stem gate valves is proposed. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the lubricating grease on the outside of the valve stem will fail over time due to long-term exposure to the external environment, resulting in gradual corrosion on the valve stem surface and increasing the difficulty of opening and closing the gate valve. This invention provides a valve stem nut for a rising stem gate valve.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A stem nut for a rising stem gate valve, comprising:

[0007] A fixing ring is provided on the outer side of the fixing ring;

[0008] A lubrication mechanism, located inside a fixed ring, is used to lubricate the valve stem. The lubrication mechanism includes a rotating component and a lubricating component. The rotating component is located inside the fixed ring and is used to store oil. The lubricating component is located outside the rotating component and is used to control the oil flow. The rotating component, in conjunction with the lubricating component, coats the valve stem with oil.

[0009] Furthermore, the rotating component includes a rotating column that rotates inside the fixed ring, with the axis of the rotating column parallel to the axis of the fixed ring. The rotating column has a connecting sleeve and a baffle at both ends, and an oil storage groove is provided inside the rotating column, which penetrates the baffle. The opening end of the oil storage groove is provided with a sealing ring, and multiple oil outlet holes are provided inside the sealing ring.

[0010] Furthermore, the lubricating component includes a connecting plate disposed outside the sealing ring. The connecting plate has a connecting groove on its side relative to the sealing ring. There are multiple connecting grooves, and each connecting groove corresponds to an oil outlet hole. A sliding hole is provided in the middle of the connecting plate. A rotating groove is provided on the side wall of the sliding hole. Each rotating groove corresponds to a connecting groove and the rotating groove is connected to the connecting groove. A ball bearing is provided inside the rotating groove, and the ball bearing rotates inside the rotating groove.

[0011] Furthermore, the connecting plate is provided with an oil guide groove on the side opposite to the sealing ring, and the oil guide groove is connected to the connecting groove.

[0012] Furthermore, a thrust bearing is also fitted on the outer side of the connecting sleeve and the rotating column, and the thrust bearing is located at both ends of the fixed ring.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention, through the arrangement of rotating and lubricating components, achieves oil coating on the valve stem during movement via the cooperation of rotating column, oil reservoir, sealing ring, oil outlet, connecting plate, connecting groove, and ball bearings. This prevents the grease on the outside of the valve stem from failing and causing gradual corrosion on the valve stem surface, thereby reducing the difficulty of gate valve opening and closing control. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial sectional view of the fixing ring of this utility model;

[0017] Figure 3 This is a utility model Figure 2 Enlarged view of section A in the middle;

[0018] Figure 4 This is an enlarged view of the rotating column of this utility model;

[0019] Figure 5 This is an enlarged view of the sliding component of this utility model;

[0020] Reference numerals: 1. Fixed ring; 101. Connecting seat; 2. Rotating component; 201. Connecting sleeve; 202. Rotating column; 203. Oil reservoir; 204. Sealing ring; 205. Oil outlet; 206. Baffle; 3. Lubricating component; 301. Connecting plate; 302. Connecting groove; 303. Ball bearing; 304. Oil guide groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figures 1 to 5 As shown, a valve stem nut for a rising stem gate valve includes: a retaining ring 1 with a connecting seat 101 on its outer side; and a lubrication mechanism disposed inside the retaining ring 1 for lubricating the valve stem. The lubrication mechanism includes a rotating component 2 and a lubricating component 3. The rotating component 2 is disposed inside the retaining ring 1 for storing oil, and the lubricating component 3 is disposed outside the rotating component 2 for controlling the oil. The rotating component 2, in conjunction with the lubricating component 3, coats the valve stem with oil. Specifically, during use, the valve stem is controlled and lubricated by the cooperation of the rotating component 2 and the lubricating component 3 to ensure the stability of the gate valve's opening and closing. During use, the retaining ring 1 is connected to the gate valve body via the connecting seat 101.

[0026] like Figures 1 to 5As shown, the rotating component 2 includes a rotating column 202, which rotates inside the fixed ring 1, and the axis of the rotating column 202 is parallel to the axis of the fixed ring 1. Connecting sleeves 201 and baffles 206 are respectively provided at both ends of the rotating column 202. An oil storage tank 203 is provided inside the rotating column 202, and the oil storage tank 203 penetrates the baffle 206. A sealing ring 204 is provided at the opening end of the oil storage tank 203, and multiple oil outlet holes 205 are provided inside the sealing ring 204. Specifically, during use, the connecting... A control panel is also installed on the outside of the connecting sleeve 201. The control panel works with the connecting sleeve 201 to control the rotation of the rotating part 2 relative to the fixed ring 1, ensuring stability during valve stem adjustment. The oil reservoir 203 can store lubricating oil during use. The sealing ring 204 can block the oil inside the oil reservoir 203, and at the same time, the oil outlet 205 controls the falling speed of the oil. A sealing gasket is provided between the sealing ring 204 and the oil reservoir 203, and the sealing ring 204 and the oil reservoir 203 are connected by bolts.

[0027] like Figures 1 to 5 As shown, the lubricating component 3 includes a connecting plate 301, which is disposed outside the sealing ring 204. The connecting plate 301 has multiple connecting grooves 302 relative to the sealing ring 204, each corresponding to an oil outlet hole 205. A sliding hole is formed in the middle of the connecting plate 301, and a rotating groove is formed on the sidewall of the sliding hole. The rotating groove corresponds to and is connected to the connecting grooves 302. A ball bearing 303 is provided inside the rotating groove, and the ball bearing 303 rotates within the rotating groove. Specifically, during use… During the process, the oil flowing out of the oil outlet 205 is stored through the connecting groove 302, so that the ball 303 can pick up the oil inside the connecting groove 302 during rotation. The connecting plate 301 and the sealing ring 204 are connected by bolts, so that the connecting groove 302 can drive the sealing ring 204 and the connecting plate 301 to rotate synchronously. During use, the ball 303 abuts against the threaded groove on the outside of the valve stem, thereby driving the ball 303 to rotate during the movement of the valve stem, so that the ball 303 lubricates the valve stem at different positions.

[0028] like Figures 1 to 5 As shown, the connecting plate 301 is also provided with an oil guide groove 304 on the side opposite to the sealing ring 204, and the oil guide groove 304 is connected to the connecting groove 302. Specifically, during use, the oil guide groove 304 connects multiple connecting grooves 302 to ensure the stability of the oil inside the connecting groove 302 during use.

[0029] like Figures 1 to 5As shown, a thrust bearing is also sleeved on the outside of the connecting sleeve 201 and the rotating column 202, and the thrust bearing is set at both ends of the fixed ring 1. Specifically, the thrust bearing can reduce the friction between the control panel and the fixed ring 1 during the rotation process, so as to ensure the stability of the control panel during use.

[0030] like Figures 1 to 5 As shown, the working state of the valve stem nut of this rising stem gate valve is as follows: When controlling the valve stem, the valve stem is moved by rotating the rotating column 202. During the movement of the valve stem, the oil inside the oil storage tank 203 is guided by the cooperation of the oil outlet 205 and the connecting groove 302 to ensure that the oil can contact the ball 303. Finally, the valve stem drives the ball 303 to rotate while coating the outside of the valve stem with oil, thereby extending the service life of the valve stem.

[0031] In summary, this utility model includes: a fixed ring 1, with a connecting seat 101 on the outer side of the fixed ring 1; and a lubrication mechanism, disposed inside the fixed ring 1, for lubricating the valve stem. The lubrication mechanism includes a rotating component 2 and a lubricating component 3. The rotating component 2 is disposed inside the fixed ring 1 for storing oil, and the lubricating component 3 is disposed outside the rotating component 2 for controlling the oil. The rotating component 2, in conjunction with the lubricating component 3, coats the valve stem with oil. Through the arrangement of the rotating component 2 and the lubricating component 3, this utility model achieves oil coating on the valve stem during movement through the cooperation of the rotating column 202, the oil storage tank 203, the sealing ring 204, the oil outlet 205, the connecting plate 301, the connecting groove 302, and the ball bearing 303. This prevents the grease on the outer side of the valve stem from failing, which would lead to gradual corrosion on the valve stem surface, thereby reducing the difficulty of gate valve opening and closing control.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A valve stem nut for a rising stem gate valve, characterized in that, include: A fixing ring is provided on the outer side of the fixing ring; A lubrication mechanism, located inside a fixed ring, is used to lubricate the valve stem. The lubrication mechanism includes a rotating component and a lubricating component. The rotating component is located inside the fixed ring and is used to store oil. The lubricating component is located outside the rotating component and is used to control the oil flow. The rotating component, in conjunction with the lubricating component, coats the valve stem with oil.

2. The stem nut of a rising stem gate valve according to claim 1, characterized in that, The rotating component includes a rotating column that rotates inside a fixed ring, with the axis of the rotating column parallel to the axis of the fixed ring. The rotating column has a connecting sleeve and a baffle at both ends. An oil storage tank is provided inside the rotating column and passes through the baffle. A sealing ring is provided at the opening end of the oil storage tank, and multiple oil outlet holes are provided inside the sealing ring.

3. The stem nut of a rising stem gate valve according to claim 2, characterized in that, The lubricating component includes a connecting plate disposed outside the sealing ring. The connecting plate has a connecting groove on its side relative to the sealing ring. There are multiple connecting grooves, and each connecting groove corresponds to an oil outlet hole. A sliding hole is provided in the middle of the connecting plate. A rotating groove is provided on the side wall of the sliding hole. Each rotating groove corresponds to a connecting groove and the rotating groove is connected to the connecting groove. A ball bearing is provided inside the rotating groove, and the ball bearing rotates inside the rotating groove.

4. The stem nut of a rising stem gate valve according to claim 3, characterized in that, The connecting plate also has an oil guide groove on the side opposite to the sealing ring, and the oil guide groove is connected to the connecting groove.

5. The stem nut of a rising stem gate valve according to claim 2, characterized in that, The connecting sleeve and the outer side of the rotating column are also fitted with thrust bearings, and the thrust bearings are located at both ends of the fixed ring.

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