Self-lubricating butterfly valve

Abstract

The utility model discloses a self-lubricating butterfly valve, which belongs to the technical field of butterfly valves, and comprises a valve body, a butterfly plate, a driving component and a lubricating component, the lubricating component comprises an oil storage tank, an oil outlet pipe, a plugging block, a connecting rod, a first spring and a U-shaped frame, a guide pipe is arranged on one side of the oil storage tank, a movable rod penetrates through the guide pipe in a sliding manner, and the movable rod is arranged on the U-shaped frame. An inclined guide groove is formed in the surface of the movable rod, a guide block is fixedly connected to the upper end of the connecting rod, the guide block is slidably connected into the guide groove, a positioning groove is formed in the top of the movable rod, a shell is fixedly connected to the position, close to the upper portion of the movable rod, of the oil storage tank, and a positioning rod slidably penetrates through the interior of the shell; the positioning rod is sleeved with a second spring; by arranging the lubricating assembly, when the butterfly valve is opened and closed, the worm can be self-lubricated, the friction between the worm and the worm gear is reduced, then the resistance when the butterfly valve is opened and closed is reduced, and more labor is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of butterfly valves, and particularly relates to a self-lubricating butterfly valve. Background Technique

[0002] A butterfly valve refers to a valve in which the closing member (valve flap or butterfly plate) is a disc and rotates around the valve shaft to achieve opening and closing. It mainly functions as a cut-off and throttle in a pipeline. The opening and closing member of a butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve opening, closing, or adjustment. The full opening to full closing of a butterfly valve is usually less than 90°.

[0003] The butterfly plate of the existing butterfly valve is driven by a driving mechanism. This driving mechanism includes a handwheel, a worm driven by the handwheel, and the worm drives a worm gear that cooperates with it, thereby driving the rotation of the rotating shaft of the butterfly plate to realize the opening and closing of the butterfly plate and the valve body. However, there is a large amount of friction during the meshing process of the worm and the worm gear, resulting in a large resistance when opening and closing the butterfly valve, and it is relatively laborious. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a self-lubricating butterfly valve to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A self-lubricating butterfly valve includes a valve body, a butterfly plate, a driving component, and a lubricating component. The butterfly plate is rotatably installed in the valve body. The driving component includes a driving box fixedly installed on one side of the valve body. Inside the driving box, there is a worm and a worm gear that mesh with each other. The lubricating component includes an oil storage tank fixedly installed on the top of the driving box. The bottom of the oil storage tank is fixedly connected with an oil outlet pipe extending into the driving box. The lower end of the oil outlet pipe is located above the worm. The upper end of the oil outlet pipe is plugged with a plug block. The top of the plug block is fixedly connected with a connecting rod. A first spring is sleeved on the connecting rod. The inner bottom wall of the oil storage tank is fixedly connected with a U-shaped frame. The plug block is slidably sleeved on the U-shaped frame. The upper end of the first spring abuts against the inner top wall of the U-shaped frame. One side of the oil storage tank is provided with a guide pipe. A movable rod slidably penetrates through the guide pipe. The surface of the movable rod is provided with an inclined guide groove. The upper end of the connecting rod is fixedly connected with a guide block. The guide block is slidably connected in the guide groove. The top of the movable rod is provided with a positioning groove. Above the movable rod near the oil storage tank, a housing is fixedly connected. A positioning rod slidably penetrates through the housing. A second spring is sleeved on the positioning rod.

[0006] As a preferred implementation manner, one end of the worm is fixedly installed with a handwheel, and the worm gear is fixedly installed at the upper end of the butterfly plate.

[0007] As a preferred embodiment, a fuel filling port is provided at the top of the fuel storage tank, and a sealing plug is inserted inside the fuel filling port.

[0008] As a preferred embodiment, a pull ring is rotatably connected to one end of the movable rod.

[0009] As a preferred embodiment, an inclined angle inclined towards the fuel storage tank is provided at the lower end of the positioning rod.

[0010] As a preferred embodiment, a limiting groove is formed on the inner wall of the guiding tube, a limiting block is provided on the side wall of the movable rod, and the limiting block is slidably connected in the limiting groove.

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

[0012] For this self-lubricating butterfly valve, by providing a lubricating assembly, when opening and closing the butterfly valve, the pull ring can be used to pull the movable rod first, so that the movable rod drives the guiding block to slide along the guiding groove, the guiding block drives the connecting rod to move upward, the connecting rod drives the blocking block to move out of the oil outlet pipe, and the lubricating oil in the fuel storage tank is discharged from the oil outlet pipe onto the worm to perform self-lubrication on the worm, reduce the friction between the worm and the worm wheel, and further reduce the resistance when opening and closing the butterfly valve, making it more labor-saving;

[0013] For this self-lubricating butterfly valve, by providing a positioning groove, a housing, a positioning rod and a second spring, after the movable rod is pulled out, the second spring will drive the positioning rod to insert into the positioning groove to position the movable rod, so that there is no need to keep pulling the movable rod all the time. After the operation is completed, the positioning rod can be pulled upward to be pulled out of the positioning groove, and then the blocking block can be automatically blocked from the oil outlet pipe under the drive of the first spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of the present utility model;

[0015] Figure 2 is the internal structural schematic diagram of the drive box of the present utility model;

[0016] Figure 3 is the present utility model Figure 2 The enlarged view of the structure at A in.

[0017] In the figure: 1. Valve body; 2. Butterfly plate; 3. Drive assembly; 31. Drive box; 32. Worm; 33. Worm wheel; 34. Handwheel; 4. Lubricating assembly; 41. Fuel storage tank; 42. Oil outlet pipe; 43. Blocking block; 44. Connecting rod; 45. First spring; 46. U-shaped frame; 47. Movable rod; 48. Guiding groove; 49. Guiding block; 410. Positioning groove; 411. Housing; 412. Positioning rod; 413. Second spring; 414. Sealing plug; 415. Pull ring; 416. Limiting block. Detailed implementation manners

[0018] The following describes the present utility model in further detail in conjunction with embodiments.

[0019] The following embodiments are used to illustrate the present utility model, but cannot be used to limit the protection scope of the present utility model. The conditions in the embodiments can be further adjusted according to specific conditions. Any simple improvement to the method of the present utility model under the premise of the concept of the present utility model belongs to the scope protected by the present utility model.

[0020] Please refer to Figures 1-3 , the present utility model provides a self-lubricating butterfly valve, which includes a valve body 1, a butterfly plate 2, a driving assembly 3 and a lubricating assembly 4. The butterfly plate 2 is rotatably installed in the valve body 1. The driving assembly 3 includes a driving box 31 fixedly installed on one side of the valve body 1. A worm 32 and a worm gear 33 that mesh with each other are arranged inside the driving box 31. One end of the worm 32 is fixedly installed with a handwheel 34, and the worm gear 33 is fixedly installed at the upper end of the butterfly plate 2. By rotating the handwheel 34, the worm 32 can be driven to rotate, so that the worm 32 drives the worm gear 33 to rotate, and the worm gear 33 drives the butterfly plate 2 to rotate, realizing the opening and closing of the butterfly valve.

[0021] The lubricating assembly 4 includes an oil storage tank 41 fixedly installed on the top of the driving box 31. The top of the oil storage tank 41 is provided with an oil filling port, and a sealing plug 414 is inserted inside the oil filling port. Lubricating oil can be added into the oil storage tank 41 through the oil filling port, and the oil filling port is sealed with the sealing plug 414.

[0022] The bottom of the oil storage tank 41 is fixedly connected with an oil outlet pipe 42 extending into the driving box 31. The lower end of the oil outlet pipe 42 is located above the worm 32. The upper end of the oil outlet pipe 42 is inserted with a plugging block 43. The top of the plugging block 43 is fixedly connected with a connecting rod 44. A first spring 45 is sleeved on the connecting rod 44. The inner bottom wall of the oil storage tank 41 is fixedly connected with a U-shaped frame 46. The plugging block 43 is slidably sleeved on the U-shaped frame 46. The upper end of the first spring 45 abuts against the inner top wall of the U-shaped frame 46. A guide pipe is arranged on one side of the oil storage tank 41. A movable rod 47 is slidably penetrated inside the guide pipe. One end of the movable rod 47 is rotatably connected with a pull ring 415. An inclined guide groove 48 is formed on the surface of the movable rod 47. The upper end of the connecting rod 44 is fixedly connected with a guide block 49. The guide block 49 is slidably connected in the guide groove 48. By providing the lubricating assembly 4, when opening and closing the butterfly valve, the pull ring 415 can be used to pull the movable rod 47 first, so that the movable rod 47 drives the guide block 49 to slide along the guide groove 48, the guide block 49 drives the connecting rod 44 to move upward, the connecting rod 44 drives the plugging block 43 to move out of the oil outlet pipe 42, and the lubricating oil in the oil storage tank 41 is discharged from the oil outlet pipe 42 onto the worm 32, performing self-lubrication on the worm 32, reducing the friction between the worm 32 and the worm gear 33, and further reducing the resistance when opening and closing the butterfly valve, making it more labor-saving.

[0023] Among them, a limiting groove is formed on the inner wall of the guiding pipe, and a limiting block 416 is arranged on the side wall of the movable rod 47. The limiting block 416 is slidably connected in the limiting groove. By arranging the limiting block 416, the movable rod 47 can be limited.

[0024] A positioning groove 410 is formed at the top of the movable rod 47. A housing 411 is fixedly connected above the movable rod 47 close to the oil storage tank 41. A positioning rod 412 is slidably penetrated through the housing 411. The lower end of the positioning rod 412 is provided with an inclined angle inclined towards the oil storage tank 41. A second spring 413 is sleeved on the positioning rod 412. By arranging the positioning groove 410, the housing 411, the positioning rod 412 and the second spring 413, after the movable rod 47 is pulled out, the second spring 413 will drive the positioning rod 412 to insert into the positioning groove 410 to position the movable rod 47, so that it is not necessary to always pull the movable rod 47. After the operation is completed, the positioning rod 412 can be pulled upward to be pulled out of the positioning groove 410, and then the plugging block 43 can be automatically blocked at the oil outlet pipe 42 under the drive of the first spring 45.

[0025] The working principle and usage process of the present utility model are as follows: First, when opening and closing the butterfly valve, the movable rod 47 can be pulled first by using the pull ring 415. After the movable rod 47 is pulled out, the second spring 413 will drive the positioning rod 412 to insert into the positioning groove 410 to position the movable rod 47, so that it is not necessary to always pull the movable rod 47. The movable rod 47 drives the guiding block 49 to slide along the guiding groove 48, the guiding block 49 drives the connecting rod 44 to move upward, the connecting rod 44 drives the plugging block 43 to move out of the oil outlet pipe 42, and the lubricating oil in the oil storage tank 41 is discharged to the worm 32 through the oil outlet pipe 42 to lubricate the worm 32 itself, reduce the friction between the worm 32 and the worm gear 33, and further reduce the resistance when opening and closing the butterfly valve, making it more labor-saving. After the operation is completed, the positioning rod 412 can be pulled upward to be pulled out of the positioning groove 410, and then the plugging block 43 can be automatically blocked at the oil outlet pipe 42 under the drive of the first spring 45.

[0026] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating butterfly valve, comprising a valve body (1), a butterfly plate (2), a drive assembly (3) and a lubrication assembly (4), characterized in that: The butterfly plate (2) is rotatably mounted in the valve body (1); the driving assembly (3) comprises a driving box (31) fixedly mounted on one side of the valve body (1); the interior of the driving box (31) is provided with a worm (32) and a worm wheel (33) meshing with each other; the lubricating assembly (4) comprises an oil storage tank (41) fixedly mounted on the top of the driving box (31); the bottom of the oil storage tank (41) is fixedly connected with an oil outlet pipe (42) extending into the driving box (31); the lower end of the oil outlet pipe (42) is located above the worm (32); the upper end of the oil outlet pipe (42) is plugged with a blocking block (43); the top of the blocking block (43) is fixedly connected with a connecting rod (44); the connecting rod (44) is sleeved with a first spring (45); the inner bottom wall of the oil storage tank (41) is fixedly connected with a U-shaped frame (46); 6), the blocking block (43) is slidably sleeved on the U-shaped frame (46), the upper end of the first spring (45) abuts against the inner top wall of the U-shaped frame (46), a guide tube is provided on one side of the oil storage tank (41), a movable rod (47) is slidably penetrated in the guide tube, the surface of the movable rod (47) is provided with an inclined guide groove (48), the upper end of the connecting rod (44) is fixedly connected with a guide block (49), the guide block (49) is slidably connected in the guide groove (48), a positioning groove (410) is provided on the top of the movable rod (47), the oil storage tank (41) is fixedly connected with a shell (411) near the upper side of the movable rod (47), a positioning rod (412) is slidably penetrated in the shell (411), and a second spring (413) is sleeved on the positioning rod (412).

2. A self-lubricating butterfly valve according to claim 1, characterized in that: A hand wheel (34) is fixedly mounted on one end of the worm (32), and the worm wheel (33) is fixedly mounted on the upper end of the butterfly plate (2).

3. A self-lubricating butterfly valve according to claim 1, characterized in that: The top of the oil storage tank (41) is provided with a refueling port, and a sealing plug (414) is inserted into the interior of the refueling port.

4. A self-lubricating butterfly valve according to claim 1, characterized in that: One end of the movable rod (47) is rotatably connected to a pull ring (415).

5. The self-lubricating butterfly valve according to claim 1, characterized in that: The lower end of the positioning rod (412) is provided with an angle inclined toward the oil storage tank (41).

6. A self-lubricating butterfly valve according to claim 1, characterized in that: The inner wall of the guide tube is provided with a limiting groove, and the side wall of the movable rod (47) is provided with a limiting block (416), and the limiting block (416) is slidably connected in the limiting groove.

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