A self-lubricating butterfly valve

Abstract

This utility model discloses a self-lubricating butterfly valve, including a valve body. A fixed seat is fixedly installed on the top of the valve body. A worm gear is arranged inside the fixed seat. A drive shaft is fixedly installed on the inner wall of the worm gear. A worm is meshed with one side of the worm gear. A handwheel is fixedly installed at one end of the worm and is located outside the fixed seat. A liquid storage chamber is opened on the top of the fixed seat. A drip cover is installed at the bottom of the liquid storage chamber. A second rotating shaft is rotatably installed inside the drip cover. A control plate is evenly installed in a ring array on the outer wall of the second rotating shaft. When the operator turns the handwheel, it drives the worm to rotate. The rotation of the worm drives the rotation of the worm gear. The rotation of the worm gear drives the rotation of the control plate, so that the lubricating oil in the liquid storage chamber is discharged through the control plate into the drip cover and then discharged from the drip cover, so that the lubricating oil drips onto the top of the worm gear and the worm for lubrication.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, specifically a self-lubricating butterfly valve. Background Technology

[0002] Butterfly valves, as a key fluid control device, play an indispensable role in many industrial fields. With their significant advantages such as simple structure, small size, light weight, rapid opening and closing, and flexible operation, they are widely used in fluid transportation pipeline systems in industries such as petroleum, chemical, power, water conservancy, and municipal construction to control the flow and cut-off of various gaseous and liquid media.

[0003] A search revealed a patent, CN220102083U, for a self-lubricating, labor-saving butterfly valve. The valve valve includes a valve body, a valve plate, and a valve stem. The valve plate is located within the valve body and is fixedly connected to the valve stem. A fixed seat is provided on the valve body, and an installation cavity is provided within the fixed seat. A worm gear and a worm are provided within the installation cavity. The worm gear is fixed to the valve stem, and the worm is rotatably connected to the fixed seat and meshes with it for transmission. One end of the worm extends to the outside of the fixed seat and is equipped with a handwheel. An oil reservoir is provided on the top of the fixed seat. This invention, by setting up an oil reservoir, a movable plug, and a driving component, allows the worm gear to rotate during the opening and closing of the butterfly valve, causing the driving component to move the movable plug. This allows lubricating oil to flow out from the guide hole and drip onto the meshing point of the worm gear and worm in a short time, thus achieving a lubrication effect, reducing resistance during the opening and closing of the butterfly valve, and making operation more labor-saving.

[0004] Current butterfly valves achieve self-lubrication by releasing lubricating oil through the pressure of an arc-shaped boss against the mechanical structure when the worm gear rotates. However, if the worm gear stops rotating and the arc-shaped boss is positioned at the mechanical structure, lubricating oil will continue to be released. This not only wastes lubricating oil but can also lead to excessive oil buildup, attracting dust and impurities, forming scale, and ultimately affecting the normal operation of the butterfly valve's internal mechanical structure, thus shortening its service life. Utility Model Content

[0005] The purpose of this invention is to provide a self-lubricating butterfly valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a self-lubricating butterfly valve, comprising a valve body, a fixed seat fixedly installed on the top of the valve body, a worm gear provided inside the fixed seat, a transmission shaft fixedly installed on the inner wall of the worm gear, a worm meshing with one side of the worm gear, a handwheel fixedly installed at one end of the worm gear, and the handwheel being located outside the fixed seat;

[0007] The top of the fixed base has a liquid storage cavity, and the bottom of the liquid storage cavity is equipped with a drip cover. A second rotating shaft is rotatably installed inside the drip cover. Control plates are evenly installed in a ring array on the outer wall of the second rotating shaft. A second bevel gear is fixedly connected to one end of the second rotating shaft. A first bevel gear is meshed with the top of the second bevel gear. A first rotating shaft is fixedly installed at the top of the first bevel gear. A third gear is fixedly installed on the outer wall of the first rotating shaft. A second gear is meshed with one side of the third gear. A first gear is meshed with the side of the second gear away from the third gear. The first gear is fixedly installed on the top of the transmission shaft.

[0008] As a further preferred embodiment of this technical solution, the dripping cover is trumpet-shaped.

[0009] As a further preferred embodiment of this technical solution, a sponge is embedded inside the drip cover, and the sponge is located at the bottom of the control panel.

[0010] As a further preferred embodiment of this technical solution, the bottom end of the dripping cover is provided with through holes evenly distributed.

[0011] As a further preferred embodiment of this technical solution, the tooth blocks on the outer wall of the first gear are distributed in a fan shape.

[0012] As a further preferred embodiment of this technical solution, a liquid filling plug is installed at the top of the fixing base.

[0013] As a further preferred embodiment of this technical solution, a float plate is provided inside the liquid storage cavity, and a schematic plate is fixedly connected to the top of the float plate, with the schematic plate positioned above the fixed base.

[0014] This utility model provides a self-lubricating butterfly valve, which has the following beneficial effects:

[0015] (1) This utility model uses a control board to rotate and drip lubricating oil. When the operator rotates the handwheel, it drives the worm gear to rotate. The rotation of the worm gear drives the rotation of the worm wheel, which in turn drives the rotation of the transmission shaft. The rotation of the transmission shaft drives the rotation of the first gear, which in turn drives the rotation of the second gear, which in turn drives the rotation of the third gear, which in turn drives the rotation of the first rotating shaft. The rotation of the first rotating shaft drives the rotation of the first bevel gear, which in turn drives the rotation of the second bevel gear, which in turn drives the rotation of the second rotating shaft. The rotation of the second rotating shaft drives the control board to rotate, so that the lubricating oil inside the storage chamber is discharged into the dripping hood through the control board and then discharged from the dripping hood. The lubricating oil drips onto the top of the worm wheel and worm gear for lubrication. The control board disperses the lubricating oil and controls the amount of lubricating oil dripped each time. This not only prevents excessive lubricating oil from dripping and causing waste, but also prevents excessive accumulation of lubricating oil, which can attract dust and impurities and form dirt, thereby affecting the normal operation of the internal mechanical structure of the butterfly valve and shortening its service life. This helps to save costs and ensure the service life of the device.

[0016] (2) With the setting of float plate and indicator plate, the float plate floats on the surface of lubricating oil by its own buoyancy during operation, while the indicator plate is located above the fixed base. When the lubricating oil in the storage chamber decreases, the float plate and indicator plate move downward. By observing the position of the indicator plate, the remaining amount of lubricating oil in the storage chamber can be known, which is convenient for timely addition of lubricating oil. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the fixing seat structure of this utility model;

[0020] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 5 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point B.

[0022] In the diagram: 1. Valve body; 2. Fixed seat; 3. Worm gear; 4. Drive shaft; 5. Worm; 6. Handwheel; 7. Float plate; 8. Schematic panel; 9. Liquid storage chamber; 10. Liquid filling plug; 11. Dropping cover; 12. Sponge; 13. Through hole; 14. First gear; 15. Second gear; 16. Third gear; 17. First rotating shaft; 18. First bevel gear; 19. Second bevel gear; 20. Second rotating shaft; 21. Control panel. Detailed Implementation

[0023] 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.

[0024] This utility model provides a technical solution: such as Figures 1 to 5 As shown, in this embodiment, a self-lubricating butterfly valve includes a valve body 1, a fixed seat 2 is fixedly installed on the top of the valve body 1, a worm gear 3 is provided inside the fixed seat 2, a transmission shaft 4 is fixedly installed on the inner wall of the worm gear 3, a worm 5 is meshed with one side of the worm gear 3, a handwheel 6 is fixedly installed at one end of the worm 5, and the handwheel 6 is located outside the fixed seat 2.

[0025] The top of the fixed base 2 is provided with a liquid storage cavity 9, and the bottom of the liquid storage cavity 9 is provided with a drip cover 11. The inside of the drip cover 11 is rotatably mounted with a second rotating shaft 20. The outer wall of the second rotating shaft 20 is uniformly mounted with control plates 21 in a ring array. One end of the second rotating shaft 20 is fixedly connected to a second bevel gear 19. The top end of the second bevel gear 19 is meshed with a first bevel gear 18. The top end of the first bevel gear 18 is fixedly mounted with a first rotating shaft 17. The outer wall of the first rotating shaft 17 is fixedly mounted with a third gear 16. One side of the third gear 16 is meshed with a second gear 15. The side of the second gear 15 away from the third gear 16 is meshed with a first gear 14. The first gear 14 is fixedly mounted on the top of the transmission shaft 4.

[0026] The existing patent CN220102083U discloses a self-lubricating, labor-saving butterfly valve. This patent discloses the valve body 1, fixed seat 2, worm gear 3, transmission shaft 4, worm 5 and handwheel 6 proposed in this application. The technical means will not be described in detail here.

[0027] When the operator turns handwheel 6, it drives worm gear 5 to rotate. The rotation of worm gear 5 drives worm wheel 3, which in turn drives drive shaft 4. Drive shaft 4 then drives first gear 14, which in turn drives second gear 15. Second gear 15 drives third gear 16, which in turn drives first rotating shaft 17. First rotating shaft 17 then drives first bevel gear 18, which in turn drives second bevel gear 19. Second bevel gear 19 then drives second rotating shaft 20. The rotation of the second rotating shaft 20 drives the control plate 21 to rotate, causing the lubricating oil inside the liquid storage chamber 9 to be discharged into the dripping cover 11 through the control plate 21, and then discharged from the dripping cover 11, so that the lubricating oil drips onto the top of the worm gear 3 and worm 5 for lubrication. By dispersing the lubricating oil through the control plate 21, the amount of lubricating oil dripping each time can be controlled. This not only prevents excessive lubricating oil from dripping and causing waste, but also prevents excessive accumulation of lubricating oil, which can attract dust and impurities, form dirt, and thus affect the normal operation of the internal mechanical structure of the butterfly valve and shorten its service life. This helps to save costs and ensure the service life of the device.

[0028] like Figure 4 As shown, the dripping cover 11 is trumpet-shaped.

[0029] like Figure 4 As shown, a sponge 12 is embedded inside the drip cover 11, and the sponge 12 is located at the bottom of the control panel 21.

[0030] During lubrication, when the lubricating fluid enters the drip cover 11, it is absorbed by the sponge 12, preventing direct dripping of lubricating oil from splashing due to impact and posing a risk of contamination.

[0031] like Figure 4 As shown, the bottom end of the dripping cover 11 is provided with through holes 13 evenly distributed.

[0032] During lubrication, it assists in the diversion of lubricating oil.

[0033] like Figure 5 As shown, the tooth blocks on the outer wall of the first gear 14 are distributed in a fan shape.

[0034] When the toothed blocks on the outer wall of the first gear 14 mesh with the second gear 15, they drive the second gear 15 to rotate. When the toothed blocks on the outer wall of the first gear 14 separate from the second gear 15, the second gear 15 stops rotating, thereby reducing the number of times lubricating oil needs to be added and eliminating the need for lubrication every time the gear is used.

[0035] like Figure 3 As shown, a liquid filling plug 10 is installed at the top of the fixed base 2.

[0036] like Figure 3 and Figure 5As shown, a float plate 7 is provided inside the liquid storage chamber 9, and an indicator plate 8 is fixedly connected to the top of the float plate 7. The indicator plate 8 is located above the fixed base 2.

[0037] The float 7 floats on the surface of the lubricating oil by its own buoyancy, while the indicator plate 8 is located above the fixed base 2.

[0038] When the lubricating oil in the reservoir 9 decreases, the float 7 and the indicator plate 8 move downwards. By observing the position of the indicator plate 8, the remaining amount of lubricating oil in the reservoir 9 can be determined, making it convenient to add lubricating oil in a timely manner.

[0039] This utility model provides a self-lubricating butterfly valve, the specific working principle of which is as follows:

[0040] When the operator turns the handwheel 6, it drives the worm 5 to rotate. The rotation of the worm 5 drives the worm wheel 3 to rotate. The rotation of the worm wheel 3 drives the transmission shaft 4 to rotate. The rotation of the transmission shaft 4 drives the first gear 14 to rotate. The rotation of the first gear 14 drives the second gear 15 to rotate. The rotation of the second gear 15 drives the third gear 16 to rotate. The rotation of the third gear 16 drives the first rotating shaft 17 to rotate. The rotation of the first rotating shaft 17 drives the first bevel gear 18 to rotate. The rotation of the first bevel gear 18 drives the second bevel gear 19 to rotate. The rotation of the second bevel gear 19 drives the second rotating shaft 20 to rotate. The rotation of the second rotating shaft 20 drives the control plate 21 to rotate, so that the lubricating oil inside the liquid storage chamber 9 is discharged into the drip cover 11 through the control plate 21, absorbed by the sponge 12, and then discharged from the through hole 13, so that the lubricating oil is dispersed and dripped onto the top of the worm wheel 3 and the worm 5 for lubrication.

[0041] Meanwhile, the float 7 floats on the surface of the lubricating oil by its own buoyancy, while the schematic plate 8 is located above the fixed base 2.

[0042] When the lubricating oil in the reservoir 9 decreases, the float 7 and the indicator plate 8 move downwards. By observing the position of the indicator plate 8, the remaining amount of lubricating oil in the reservoir 9 can be determined, making it convenient to add lubricating oil in a timely manner.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating butterfly valve, comprising a valve body (1), characterized in that: A fixed seat (2) is fixedly installed on the top of the valve body (1). A worm wheel (3) is provided inside the fixed seat (2). A transmission shaft (4) is fixedly installed on the inner wall of the worm wheel (3). A worm (5) is meshed with one side of the worm wheel (3). A handwheel (6) is fixedly installed at one end of the worm (5). The handwheel (6) is located outside the fixed seat (2). The top of the fixed base (2) is provided with a liquid storage cavity (9), and the bottom of the liquid storage cavity (9) is provided with a drip cover (11). The inside of the drip cover (11) is rotatably installed with a second rotating shaft (20). The outer wall of the second rotating shaft (20) is uniformly provided with control plates (21) in a ring array. One end of the second rotating shaft (20) is fixedly connected to a second bevel gear (19). The top end of the second bevel gear (19) is meshed with a first bevel gear (18). The top end of the first bevel gear (18) is fixedly installed with a first rotating shaft (17). The outer wall of the first rotating shaft (17) is fixedly installed with a third gear (16). One side of the third gear (16) is meshed with a second gear (15). The side of the second gear (15) away from the third gear (16) is meshed with a first gear (14). The first gear (14) is fixedly installed on the top of the transmission shaft (4).

2. The self-lubricating butterfly valve according to claim 1, characterized in that: The drip cover (11) is trumpet-shaped.

3. The self-lubricating butterfly valve according to claim 1, characterized in that: The inside of the drip cover (11) is embedded with a sponge (12), which is located at the bottom of the control panel (21).

4. A self-lubricating butterfly valve according to claim 1, characterized in that: The bottom end of the dripping cover (11) is uniformly provided with through holes (13).

5. A self-lubricating butterfly valve according to claim 1, characterized in that: The tooth blocks on the outer wall of the first gear (14) are distributed in a fan shape.

6. A self-lubricating butterfly valve according to claim 1, characterized in that: A liquid filling plug (10) is installed at the top of the fixed base (2).

7. A self-lubricating butterfly valve according to claim 1, characterized in that: The liquid storage chamber (9) is provided with a float plate (7), and a schematic plate (8) is fixedly connected to the top of the float plate (7). The schematic plate (8) is located above the fixed base (2).

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