CN-121993611-A - Valve rod slip-increasing structure

Abstract

The invention relates to the field of valve maintenance and discloses a valve rod sliding structure, wherein a supporting sleeve is fixedly connected to the top end of a transmission sleeve, a rotating column is connected to the inside of the supporting sleeve in a sliding manner, an adjusting handle is fixedly connected to the outside of the rotating column, a blocking valve is rotatably connected to the inside of the transmission sleeve, a mounting threaded column is fixedly connected to the bottom end of the rotating column, the bottom end of the mounting threaded column is connected with the inside of the blocking valve through a traction rod, the rotating opening and closing of the blocking valve are realized, a mounting groove is formed in the inside of the supporting sleeve, a fixing sleeve is fixedly connected to the inside of the mounting groove, and the outside of the mounting threaded column is connected with the inside of the fixing sleeve in a threaded manner. According to the invention, the friction force outside the valve rod is reduced, the smoothness of the rotation of the valve rod is improved, the locking of the valve rod caused by long-term use is avoided, and the use stability is improved.

Inventors

• Shi Miaozhi
• SHI HAIJIAN
• ZHANG JIE
• CHEN SENLIN

Assignees

• 江苏神通阀门股份有限公司
• 中石化广州工程有限公司

Dates

Publication Date

20260508

Application Date

20241106

Claims (4)

1. 1. The utility model provides a valve rod slip structure, its characterized in that includes transmission sleeve (1) that is used for supporting, the top fixedly connected with support sleeve (2) of transmission sleeve (1), the inside sliding connection of support sleeve (2) has column of revolution (3), the outside fixedly connected with adjustment handle (5) of column of revolution (3), the inside rotation of transmission sleeve (1) is connected with and blocks valve (6), the bottom fixedly connected with installation screw thread post (12) of column of revolution (3), the bottom of installation screw thread post (12) links to each other with the inside of blocking valve (6) through the traction lever to be used for realizing blocking the rotation of valve (6) and opening and shutting, the traction lever is including connecting column (11) that are located installation screw thread post (12) bottom, limiting notch (22) have been seted up to the inside both sides of blocking valve (6), the inside of both sides of connecting column (11) all fixedly connected with limiting plate (21), the outside sliding connection of limiting plate (21) is in the inside of limiting notch (22), the outside sliding connection of connecting column (11) is at blocking valve (6) inside of supporting sleeve (8), the inside of fixing thread (8) is installed in the inside of supporting sleeve (8), the inside of column spinner (3) links to each other with installation screw thread post (12) through the drainage groove to be used for realizing the outside lubrication of installation screw thread post (12), outside fixedly connected with supporting ring (10) of column spinner (3), supporting ring (10) link to each other with the inside of fixed cover (8) through the sealing ring, the sealing ring is including seal cover (17) that are located supporting ring (10) bottom, sealed notch (18) have been seted up in the top outside of fixed cover (8), the bottom fixedly connected with upside sealing pad (16) of seal cover (17), the outside nestification of seal cover (17) is in the inside of sealed notch (18), the drainage groove is including being located transmission groove (19) that the column spinner (3) is inside seted up, discharge groove (20) have all been seted up to the bottom both sides of transmission groove (19), entering notch (4) have been seted up at the middle part of adjusting handle (5), link up between entering notch (4) and transmission groove (19), lubrication groove (14) have been seted up to outside that the outside of installation screw thread post (12) is located discharge port (13) horizontal position.
2. 2. A valve rod sliding increasing structure according to claim 1, wherein the outer part of the supporting ring (10) is attached to the inner wall of the mounting groove (9) for realizing the moving stability of the rotating column (3).
3. 3. The valve rod sliding increasing structure according to claim 1, wherein two sides of the inner part of the transmission sleeve (1) are fixedly connected with seal semi-rings (7), and the inner sides of the seal semi-rings (7) are respectively correspondingly attached to two sides of the blocking valve (6).
4. 4. The valve rod sliding structure according to claim 1, wherein the lower side sealing gasket (15) is fixedly connected to the inner bottom end of the sealing notch (18), and the bottom end of the upper side sealing gasket (16) is attached to the top end of the lower side sealing gasket (15).

Description

Valve rod slip-increasing structure Technical Field The invention relates to the field of valve maintenance, in particular to a valve rod sliding increasing structure. Background The valve rod is a key component in the valve, and controls the flow of fluid through rotation or movement, and is generally connected with a driving device of the valve and a valve clack and is responsible for transmitting the action of the driving device to the valve clack so as to realize the opening and closing or regulating functions of the valve. The long-term use of valve rod because the extrusion of rivers and the rust that the valve rod outside produced cause the outside coefficient of friction increase of valve rod, the valve rod can appear the problem such as bite between valve body, and the valve rod is rotatory to be opened extremely hard, carries out normal use extremely difficultly. Disclosure of Invention The invention aims to solve the defects in the prior art, and provides a valve rod sliding structure which can avoid the locking of the valve rod caused by long-term use. In order to achieve the above purpose, the present invention provides the following technical solutions: The utility model provides a valve rod increases smooth structure, including the transmission sleeve that is used for supporting, the top fixedly connected with of transmission sleeve supports the sleeve, the inside sliding connection who supports the sleeve has the column spinner, the outside fixedly connected with of column spinner adjusts the handle, the inside rotation of transmission sleeve is connected with stops the valve, the bottom fixedly connected with installation screw thread post of column spinner, the bottom of installation screw thread post passes through the traction lever and blocks the inside of valve and link to each other, be used for realizing stopping the rotatory opening and shutting of valve, the traction lever is including the spliced pole that is located installation screw thread post bottom, the restriction notch has been seted up to the inside both sides of stopping the valve, the equal fixedly connected with limiting plate in both sides of spliced pole, the outside sliding connection of limiting plate is in the inside of restriction notch, the outside sliding connection of spliced pole is in the inside of stopping the valve. The inside of supporting sleeve has seted up the fixed cover of inside fixedly connected with of mounting groove, the inside of the fixed cover again of outside threaded connection of installation screw thread post, the inside of column spinner links to each other through drainage groove and installation screw thread post, in order to be used for realizing the outside lubrication of installation screw thread post, the outside fixedly connected with supporting ring of column spinner, the supporting ring passes through the sealing ring and links to each other with the inside of fixed cover, the sealing ring is including the seal cover that is located the supporting ring bottom, seal notch has been seted up in the top outside of fixed cover, the bottom fixedly connected with upside sealing pad of seal cover, the outside nestification of seal cover is in the inside of seal notch. The drainage groove is including being located the transmission groove that the column spinner was inside offered, and discharge groove has all been seted up to the bottom both sides of transmission groove, and the entering notch has been seted up at the regulation handle middle part, link up between entering notch and the transmission groove, and the outside of installation screw post is located discharge port horizontal position and has seted up lubrication ring groove. Further, the outside laminating of support ring is at the inner wall of mounting groove to be used for realizing the stability that the column spinner removed. Further, the seal half rings are fixedly connected to two sides of the inner portion of the transmission sleeve, and the inner sides of the seal half rings are correspondingly attached to two sides of the blocking valve respectively. Further, the inside bottom fixedly connected with downside is sealed fills up of sealed notch, and the laminating of the bottom of upside is sealed the top of filling up at the downside. The invention has the following beneficial effects: According to the invention, lubricating oil is added into the groove opening to enter the transmission groove, then discharged to two sides through the discharge groove and discharged through the discharge port, and the lubricating oil enters the lubricating ring groove due to the limitation of the fixed sleeve, so that the lubricating outside the mounting threaded column is performed, the friction outside the valve rod is reduced, the rotating smoothness of the valve rod is improved, the valve rod is prevented from being blocked due to long-term use, and the use stability is improved. Drawings FIG. 1 is an overall view of a valve ste