Gate valve rod with lubricating device

Abstract

The utility model relates to the technical field of valve rods, and discloses a gate valve rod with a lubricating device, which comprises a valve pipe, the top end of the valve pipe is fixedly connected with a fixed box, the top end of the fixed box is fixedly connected with a screw cylinder, a switch assembly is arranged between the inside of the fixed box and the inside of the valve pipe, the side end of the fixed box is provided with a circular groove, and the screw cylinder is fixedly connected with the circular groove. According to the utility model, through the cooperative arrangement of the circular groove, the lubricating assembly and the observation assembly, the lubricating assembly is not in direct contact with the outside, the lubricating oil is prevented from adsorbing dust and impurities, the service life of the lubricating assembly is prolonged, the service life of the lubricating assembly is prolonged, and the service life of the lubricating assembly is prolonged. And due to the arrangement of the observation assembly, the use amount of the lubricating oil can be known conveniently, and therefore personnel can control the use amount of the lubricating oil conveniently.

Description

Technical Field

[0001] This utility model relates to the field of valve stem technology, specifically to a gate valve stem with a lubrication device. Background Technology

[0002] A gate valve is a device that controls fluid flow through a gate. The gate moves perpendicular to the direction of the fluid. Gate valves can only be fully open or fully closed; they cannot be used for regulation or throttling. Gate valves are sealed by the contact between the valve seat and the gate. Usually, metal materials are installed on the sealing surface to increase wear resistance. The opening and closing of the gate valve is driven by the raising and lowering of the valve stem. The valve stem of a gate valve needs to be lubricated regularly during production and daily life.

[0003] Existing patent application CN202420631149.9 discloses a gate valve stem with a lubrication device, including a gate valve body, a lubrication device, and a gate valve stem. The technical solution mainly includes: the lubrication device includes an oil storage box with an oil storage chamber inside; an elastic pushing device is provided on one side of the oil storage chamber; a discharge port is provided on the other side of the oil storage box; a scraper is provided on one side of the discharge port; recovery chambers are provided at both ends of the scraper; one end of the recovery chamber has a notch that engages with the threaded portion on the gate valve stem; the other end is connected to the oil storage chamber and has a tapered return channel; a connecting part is provided on one side of the scraper; and one end of the gate valve stem passes through the connecting part. This invention has the effects of saving lubricant, controlling the appropriate amount of lubricant added, facilitating equipment lubrication and maintenance by workers, and reducing work difficulty.

[0004] The above solution has the following problems during implementation: excess lubricating oil exposed at the outer scraper end easily attracts dust and impurities, and after recycling, it is easy to collect the dust along with it. This can affect the normal operation of the valve stem when it is used again. Therefore, a gate valve stem with a lubrication device is needed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a gate valve stem with a lubrication device, which solves the problem in the prior art where excess lubricating oil exposed at the outer end of the scraper easily attracts dust and impurities, and after recycling, it is easy to collect the dust along with the oil, which in turn affects the normal operation of the valve stem during subsequent use.

[0006] This utility model provides the following technical solution: a gate valve stem with a lubrication device, including a valve tube, a fixed box fixedly connected to the top of the valve tube, a screw cylinder fixedly connected to the top of the fixed box, a switch assembly provided between the interior of the fixed box and the interior of the valve tube, a circular groove opened on the side end of the fixed box, a lubrication assembly for lubricating the switch assembly provided inside the circular groove, and an observation assembly for observing the amount of lubrication used on the side end of the lubrication assembly.

[0007] As a preferred embodiment of the above technical solution, the lubrication assembly includes an oil reservoir pipe inserted into a circular groove. A connecting pipe is fixedly connected to the side end of the oil reservoir pipe, and a sponge is threadedly installed on the side end of the connecting pipe. A screw is threadedly connected to the side end of the oil reservoir pipe, and a piston is fixedly connected to the side end of the screw. The piston is located inside the oil reservoir pipe, and a knob is fixedly connected to the side end of the screw.

[0008] As a preferred embodiment of the above technical solution, the side end of the oil storage pipe is fixedly connected to two side plates, and the side end of the oil storage pipe is fixedly connected to a second side plate. Each side plate is connected to the side end of the fixed box with a bolt.

[0009] As a preferred embodiment of the above technical solution, the observation component includes a guide rod, which is fixedly connected to the side end of the second side plate. The top of the guide rod has a scale line, and a circular plate is fixedly connected to the side end of the guide rod.

[0010] As a preferred embodiment of the above technical solution, a sleeve plate is fitted onto the outer end of the guide rod, and a bearing is installed on the inner side of the sleeve plate.

[0011] As a preferred embodiment of the above technical solution, the knob is installed on the inner side of the bearing.

[0012] As a preferred embodiment of the above technical solution, the switching assembly includes a valve stem, which is threadedly connected to a screw cylinder and a fixed housing. A gate valve is rotatably mounted at the bottom end of the valve stem, and a rotating plate is fixedly connected to the top end of the valve stem.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention, through the coordinated arrangement of a circular groove, a lubrication component, and an observation component, ensures that the lubrication component does not directly contact the outside environment, preventing the lubricating oil from absorbing dust and impurities, thereby preventing the valve stem from malfunctioning. The observation component facilitates monitoring the amount of lubricating oil used, making it easier for personnel to control the amount of lubricating oil used. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a gate valve stem with a lubrication device;

[0016] Figure 2 for Figure 1 A magnified schematic diagram of the structure of part A in the diagram;

[0017] Figure 3 This is a cross-sectional view of the stem of a gate valve with a lubrication device.

[0018] Figure 4 for Figure 3 A magnified schematic diagram of part B.

[0019] In the diagram: 1. Valve pipe; 101. Fixing box; 102. Screw barrel; 103. Circular groove; 2. Switch assembly; 201. Valve stem; 202. Gate valve; 203. Rotary plate; 3. Lubrication assembly; 301. Oil reservoir pipe; 302. Connecting pipe; 303. Sponge wiper; 304. Screw; 305. Piston; 306. Knob; 307. Side plate one; 308. Side plate two; 309. Bolt; 4. Observation assembly; 401. Guide rod; 402. Scale line; 403. Circular plate; 404. Sleeve plate; 405. Bearing. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] like Figures 1-4 As shown, this utility model provides a technical solution: a gate valve stem with a lubrication device, including a valve tube 1, a fixed box 101 fixedly connected to the top of the valve tube 1, a screw cylinder 102 fixedly connected to the top of the fixed box 101, a switch assembly 2 provided between the interior of the fixed box 101 and the interior of the valve tube 1, the switch assembly 2 including a valve stem 201, the valve stem 201 being threadedly connected inside the screw cylinder 102 and inside the fixed box 101, a gate valve 202 rotatably mounted at the bottom of the valve stem 201, and a rotating plate 203 fixedly connected to the top of the valve stem 201. When a person rotates the rotating plate 203 to drive the valve stem 201 to rotate, it can open the valve. The gate valve 202 moves up and down, causing the valve pipe 1 to open or close. A circular groove 103 is provided on the side of the fixed box 101. The inside of the circular groove 103 is a lubrication component 3 for lubricating the switch assembly 2. The side of the lubrication component 3 is provided with an observation component 4 for observing the amount of lubrication component 3. Through the coordinated arrangement of the circular groove 103, the lubrication component 3 and the observation component 4, the lubrication component 3 will not directly contact the outside world, avoiding the lubricating oil from absorbing dust and impurities, thereby preventing the normal operation of the valve stem 201. The setting of the observation component 4 makes it easy to know the amount of lubricating oil used, thus making it easy for personnel to control the amount of lubricating oil used.

[0022] As one implementation method in this embodiment, such as Figure 2 and Figure 4As shown, the lubrication assembly 3 includes an oil reservoir 301, which is inserted into a circular groove 103. A connecting pipe 302 is fixedly connected to the side end of the oil reservoir 301. A sponge 303 is threadedly installed on the side end of the connecting pipe 302. The sponge 303 is removable and replaceable. A screw 304 is threadedly connected to the side end of the oil reservoir 301. A piston 305 is fixedly connected to the side end of the screw 304, which is located inside the oil reservoir 301. A knob 306 is fixedly connected to the side end of the screw 304. Two side plates 307 are fixedly connected to the side end, and a second side plate 308 is fixedly connected to the side end of the oil storage pipe 301. Bolts 309 are installed between the side end of each side plate 307 and the side end of the fixed box 101. In practice, by disassembling the sponge 303, rotating the knob 306 drives the screw 304 and piston 305 to move within the oil storage pipe 301, causing the connecting pipe 302 to align with the lubricating oil collected in the valve pipe 1. Then, the sponge 303 is reinstalled, and the oil storage pipe 301 is inserted into the circular groove 10. After 3 minutes, the side plate 307 is installed to the side end of the fixed box 101 using bolts 309. Then, rotating the knob 306 drives the screw 304 and piston 305 to rotate. The piston 305, under the rotation of the screw 304, pushes the lubricating oil towards the connecting pipe 302, causing the lubricating oil to wet the sponge 303 after passing through the connecting pipe 302. When the operator rotates the rotating plate 203, causing the valve stem 201 to rotate, the gate valve 202 can move up and down, opening or closing the valve pipe 1. At this time, the valve stem... As valve stem 201 moves up and down, it continuously contacts sponge 303. The lubricating oil absorbed by sponge 303 can evenly wipe valve stem 201, thus facilitating lubrication. At the same time, the sponge 303 saves lubricating oil and avoids excessive lubricating oil being applied to valve stem 201, which would be wasteful. Since oil reservoir 301 and sponge 303 are located in circular groove 103, they do not directly contact the outside environment, preventing the lubricating oil from absorbing dust and impurities, thereby ensuring the normal operation of valve stem 201.

[0023] As one implementation method in this embodiment, such as Figure 2As shown, the observation component 4 includes a guide rod 401, which is fixedly connected to the side end of the side plate 308. The top of the guide rod 401 has a scale line 402, and a circular plate 403 is fixedly connected to the side end of the guide rod 401. A sleeve plate 404 is fitted on the outer end of the guide rod 401, and a bearing 405 is installed on the inner side of the sleeve plate 404. A knob 306 is installed on the inner side of the bearing 405. In practice, rotating the knob 306 drives the screw 304 and the piston 305 to rotate. At this time, the piston 305 pushes the lubricating oil towards the connecting pipe 302 under the rotation of the screw 304, so that the lubricating oil wets the sponge 303 after passing through the connecting pipe 302. At this time, due to the setting of the bearing 405, when the knob 306 can rotate, it drives the sleeve plate 404 to move at the outer end of the guide rod 401. At this time, the amount of lubricating oil can be known by observing the scale line 402 on the guide rod 401, which makes it easier for personnel to control the amount of lubricating oil used.

[0024] Working principle: By disassembling the sponge 303, rotating the knob 306 drives the screw 304 and piston 305 to move within the oil reservoir 301, aligning the connecting pipe 302 with the lubricating oil collected in the valve pipe 1. Then, the sponge 303 is reinstalled. After inserting the oil reservoir 301 into the circular groove 103, the side plate 307 is attached to the side of the fixed box 101 using bolts 309. Rotating the knob 306 then drives the screw 304 and piston 305 to rotate. The piston 305, under the rotation of the screw 304, pushes the lubricating oil towards the connecting pipe 302, allowing the lubricating oil to wet the sponge 303 after passing through the connecting pipe 302. Due to the bearing 405, with the knob 306 rotating, the sleeve 404 moves outside the guide rod 401. By observing the scale line 402 on the guide rod 401, the amount of lubricating oil can be determined, making it easier for personnel to control the amount of lubricating oil used. When the personnel rotate the rotating plate 203 to drive the valve stem 201 to rotate, the gate valve 202 can be moved up and down, causing the valve pipe 1 to open or close. At this time, the valve stem 201 will continuously contact the sponge 303 while moving up and down. The lubricating oil absorbed by the sponge 303 can evenly wipe the valve stem 201, thus facilitating the lubrication of the valve stem 201. At the same time, the setting of the sponge 303 can save lubricating oil and avoid excessive lubricating oil being applied to the valve stem 201, which would be wasteful. Since the oil storage pipe 301 and the sponge 303 are set in the circular groove 103, they will not directly contact the outside environment, avoiding the lubricating oil from absorbing dust and impurities, thereby preventing the valve stem 201 from operating normally.

[0025] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A gate valve stem with a lubrication device, comprising a valve tube (1), a fixed housing (101) fixedly connected to the top end of the valve tube (1), a screw cylinder (102) fixedly connected to the top end of the fixed housing (101), and a switching assembly (2) provided between the interior of the fixed housing (101) and the interior of the valve tube (1), characterized in that: The fixed box (101) has a circular groove (103) on its side. The inside of the circular groove (103) is provided with a lubrication component (3) for lubricating the switch assembly (2). The side of the lubrication component (3) is provided with an observation component (4) for observing the amount of lubrication component (3).

2. The valve stem of a gate valve with a lubrication device according to claim 1, characterized in that: The lubrication assembly (3) includes an oil reservoir (301) inserted into a circular groove (103). A connecting pipe (302) is fixedly connected to the side end of the oil reservoir (301). A sponge (303) is threaded onto the side end of the connecting pipe (302). A screw (304) is threaded onto the side end of the oil reservoir (301). A piston (305) is fixedly connected to the side end of the screw (304). The piston (305) is located inside the oil reservoir (301). A knob (306) is fixedly connected to the side end of the screw (304).

3. A lubricated gate valve stem as defined in claim 2, wherein: The oil storage pipe (301) is fixedly connected to two side plates (307) and the side plate (308) is fixedly connected to the side of the oil storage pipe (301). Each side plate (307) is connected to the side of the fixed box (101) with a bolt (309).

4. The valve stem of a gate valve with a lubrication device according to claim 3, characterized in that: The observation component (4) includes a guide rod (401), which is fixedly connected to the side end of the side plate (308). The top end of the guide rod (401) is provided with a scale line (402), and a circular plate (403) is fixedly connected to the side end of the guide rod (401).

5. The valve stem of a gate valve with a lubrication device according to claim 4, characterized in that: The outer end of the guide rod (401) is fitted with a sleeve plate (404), and a bearing (405) is installed on the inner side of the sleeve plate (404).

6. The valve stem of a gate valve with a lubrication device according to claim 5, characterized in that: The knob (306) is mounted on the inside of the bearing (405).

7. The valve stem of a gate valve with a lubrication device according to claim 1, characterized in that: The switch assembly (2) includes a valve stem (201), which is threadedly connected to the screw cylinder (102) and the fixed box (101). A gate valve (202) is rotatably provided at the bottom end of the valve stem (201), and a rotating plate (203) is fixedly connected to the top end of the valve stem (201).

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