Butterfly valve with self-lubricating function

Abstract

The utility model relates to the technical field of valves, and discloses a butterfly valve with a self-lubricating function, which comprises an outer cover, two first gears are arranged in the outer cover, two second gears are arranged in the outer cover, the top of the first gear on the right side is fixedly connected with a rotating cover, and the top of the second gear on the right side is fixedly connected with the rotating cover. The top of the second gear on the right side is fixedly connected with a rotating rod, the rotating rod is rotationally connected with a rotating cover, the second gear on the right side is connected with the first gear on the left side in a meshed mode, and a lubricating assembly is arranged on the inner bottom wall of the outer cover and used for automatically lubricating a butterfly valve. According to the butterfly valve, the control disc on the lower side is rotated to drive the rotating rod to rotate, the valve rod drives the butterfly plate to rotate, and when the butterfly plate rotates to a position close to a closed position or a position needing to be opened, the control disc on the upper side is rotated to drive the rotating cover to rotate, and the valve rod drives the butterfly plate to rotate, so that the problem that the opening degree of the butterfly valve is difficult to accurately control under the labor-saving condition is solved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a butterfly valve with self-lubricating function. Background Technology

[0002] Butterfly valves are key mechanical devices for controlling fluid flow in fluid transport systems. They achieve various control functions by changing the cross-sectional area of ​​the flow channel. Their basic functions include cutting off, connecting, and regulating the flow rate. Their structure mainly consists of a valve body, a butterfly plate, a valve stem, and a drive device. With their simple structure, convenient operation, and good regulating performance, they are used in many scenarios involving fluid control.

[0003] The butterfly plate in a butterfly valve is disc-shaped and rotates around the valve stem to open and close the valve. In operation, especially when more precise adjustment of the opening is required, existing butterfly valves often face the problem of not being able to balance operational accuracy and reducing operating force. It is difficult to accurately control the opening of the butterfly valve while saving effort. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a butterfly valve with self-lubricating function, which aims to improve the problem that butterfly valves are difficult to accurately control the opening degree with less effort.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a butterfly valve with self-lubricating function, comprising an outer cover, two first gears and two second gears disposed inside the outer cover, a rotating cover fixedly connected to the top of the first gear on the right, and a rotating rod fixedly connected to the top of the second gear on the right, the rotating rod being rotatably connected to the rotating cover, the rotating cover being rotatably connected to the outer cover, two control discs disposed on the top of the outer cover, the upper control disc being fixedly connected to the rotating rod, and the lower control disc being fixedly connected to the rotating cover, the first gear on the right being meshed with the second gear on the left, and the second gear on the right being meshed with the first gear on the left, and a lubrication assembly disposed on the inner bottom wall of the outer cover, the lubrication assembly being used for automatically lubricating the butterfly valve.

[0006] Preferably, the lubrication assembly includes a storage box, which is fixedly connected to an outer cover. A feed pipe is slidably connected to the top of the storage box, and a plug is slidably connected to the top of the feed pipe. An adsorption pad is fixedly connected to the bottom wall of the storage box, and a pipe is fixedly connected to the surface of the adsorption pad. An extrusion plate is fixedly connected to the bottom of the feed pipe, and the extrusion plate is slidably connected to the storage box.

[0007] Preferably, a valve stem is fixedly connected inside the first gear on the left side, and the valve stem is fixedly connected to the second gear on the left side.

[0008] Preferably, the adsorption pad is rotatably connected to the valve stem, and a butterfly plate is fixedly connected to the bottom of the valve stem.

[0009] Preferably, the surface of the adsorption pad is an open-pore metal shell, and the interior of the adsorption pad is an oleophilic polymer gel.

[0010] Preferably, the valve stem is rotatably connected to the storage box, and the valve stem is slidably connected to the extrusion plate.

[0011] Preferably, a sealing ring, which is made of rubber, is fixedly connected to the surface of the butterfly plate.

[0012] Preferably, the sealing ring is located on the surface of the valve stem, and the valve stem is rotatably connected to the outer cover.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, rotating the lower control disc drives the rotating rod to rotate, the rotating rod drives the first gear on the right to rotate, the first gear on the right to rotate, the first gear on the left to rotate, the first gear on the left to rotate, the valve stem to rotate, the valve stem to rotate, and the butterfly plate to rotate. When the butterfly plate rotates to a position close to closed or requiring opening, rotating the upper control disc drives the rotating cover to rotate, the rotating cover drives the second gear on the right to rotate, the second gear on the right to rotate, the second gear on the left to rotate, the second gear on the left to rotate, the valve stem to rotate, and the valve stem to rotate, thus solving the problem of butterfly valves being difficult to accurately control the opening degree with less effort.

[0015] 2. In this utility model, opening the plug allows lubricating medium to be added into the storage box through the feed pipe. The oleophilic polymer gel in the adsorption pad absorbs and slowly seeps out the lubricating medium through the openings on the surface of the adsorption pad onto the valve stem, thereby slowly applying lubricating medium to the valve stem and achieving automatic lubrication of the valve stem. Pressing the feed pipe causes the extrusion plate to move down and extrude a large amount of lubricating medium, which quickly passes through the adsorption pad and enters the surface of the valve stem, thus achieving automatic lubrication of the valve stem and solving the problem of cumbersome lubrication operation of butterfly valves. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a butterfly valve with self-lubricating function proposed in this utility model;

[0017] Figure 2 This is a schematic diagram of the adsorption pad of a butterfly valve with self-lubricating function proposed in this utility model.

[0018] Figure 3 A schematic diagram of the sealing ring of a butterfly valve with self-lubricating function proposed in this utility model;

[0019] Figure 4This is a schematic diagram of the rotating rod of a butterfly valve with self-lubricating function proposed in this utility model;

[0020] Figure 5 This is a schematic diagram of the feed pipe of a butterfly valve with self-lubricating function proposed in this utility model.

[0021] Legend:

[0022] 1. Outer cover; 2. Rotating cover; 3. Rotating rod; 4. First gear; 5. Second gear; 6. Control panel; 7. Valve stem; 8. Storage box; 9. Feed pipe; 10. Extrusion plate; 11. Plug; 12. Pipe; 13. Sealing ring; 14. Butterfly plate; 15. Adsorption pad. Detailed Implementation

[0023] 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. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figure 1 Figure 2 and Figure 4 This utility model provides an embodiment of a butterfly valve with self-lubricating function, comprising an outer cover 1, two first gears 4 and two second gears 5 disposed inside the outer cover 1, a rotating cover 2 fixedly connected to the top of the right first gear 4, a rotating rod 3 fixedly connected to the top of the right second gear 5, the rotating rod 3 being rotatably connected to the rotating cover 2, the rotating cover 2 being rotatably connected to the outer cover 1, two control discs 6 disposed on the top of the outer cover 1, the upper control disc 6 being fixedly connected to the rotating rod 3, and the lower control disc 6 being fixedly connected to the rotating cover 2, the right first gear 4 being meshed with the left second gear 5, and the right second gear 5 being meshed with the left first gear 4, and a lubrication assembly disposed on the inner bottom wall of the outer cover 1 for automatically lubricating the butterfly valve.

[0025] Specifically, the two first gears 4 and two second gears 5 inside the outer cover 1 form two different gear transmission ratios by meshing the right first gear 4 with the left second gear 5 and the right second gear 5 with the left first gear 4. When the lower control panel 6 is rotated, the power is transmitted to the right first gear 4 through the rotating cover 2, which then drives the left second gear 5, ultimately causing the valve stem 7 to rotate and adjust the opening of the butterfly plate 14. Since the number of teeth of the first gear 4 is greater than that of the second gear 5, a large gear ratio transmission is formed, which can reduce torque and reduce the operating force required to adjust the opening, thus achieving labor-saving adjustment. When the upper control panel 6 is rotated, the power is transmitted to the right second gear 5 through the rotating rod 3, which drives the left first gear 4 to rotate and adjust the opening of the butterfly plate 14. At this time, a small gear ratio transmission is used, which can improve the accuracy of adjustment. The opening can be precisely controlled when the butterfly plate 14 is close to the closed or open position, thus solving the problem that the butterfly valve is difficult to accurately control the opening while saving effort.

[0026] Reference Figure 1 , Figure 2 and Figure 5 The lubrication assembly includes a storage box 8, which is fixedly connected to the outer cover 1. A feed pipe 9 is slidably connected to the top of the storage box 8, and a plug 11 is slidably connected to the top of the feed pipe 9. An adsorption pad 15 is fixedly connected to the bottom wall of the storage box 8, and a pipe 12 is fixedly connected to the surface of the adsorption pad 15. An extrusion plate 10 is fixedly connected to the bottom of the feed pipe 9, and the extrusion plate 10 is slidably connected to the storage box 8.

[0027] Specifically, the storage box 8 provides an independent and stable storage space for the lubricating medium, preventing it from leaking into other parts of the butterfly valve. By opening the plug 11, the lubricating medium can be added to the storage box 8 through the feed pipe 9. The surface of the adsorption pad 15 is an open metal shell, and the inside is an oleophilic polymer gel. This structure can absorb the lubricating medium through the openings on the surface of the adsorption pad 15 and slowly seep out onto the valve stem 7, thereby achieving continuous and slow automatic lubrication of the valve stem 7. Pressing the feed pipe 9 drives the extrusion plate 10 to squeeze the lubricating medium, allowing a large amount of lubricating medium to quickly pass through the openings on the adsorption pad 15 and enter the surface of the valve stem 7 for rapid lubrication.

[0028] Reference Figure 2 A valve stem 7 is fixedly connected inside the first gear 4 on the left side, and the valve stem 7 is fixedly connected to the second gear 5 on the left side.

[0029] Specifically, when the upper or lower control panel 6 is rotated to drive the corresponding gear to rotate, the power can be transmitted to the butterfly plate 14 through the valve stem 7, thereby realizing the adjustment of the butterfly valve opening.

[0030] Reference Figure 2 and Figure 3 The adsorption pad 15 is rotatably connected to the valve stem 7, and the bottom of the valve stem 7 is fixedly connected to the butterfly plate 14.

[0031] Specifically, when the valve stem 7 rotates, it transmits power to the butterfly plate 14, causing the butterfly plate 14 to rotate synchronously, thereby adjusting the opening of the butterfly valve.

[0032] Reference Figure 3 The surface of the adsorption pad 15 is an open metal shell, and the interior of the adsorption pad 15 is an oleophilic polymer gel.

[0033] Specifically, the oleophilic polymer gel has oil absorption and retention properties, enabling it to absorb and store lubricating media. At the same time, it can slowly release the stored lubricating media onto the surface of the valve stem 7, achieving automatic and continuous lubrication of the valve stem 7. The perforated metal shell provides physical support and protection for the internal oleophilic polymer gel, ensuring that the gel can stably perform its function of storing and releasing lubricating media for a long time.

[0034] Reference Figure 2 and Figure 5 The valve stem 7 is rotatably connected to the storage box 8, and the valve stem 7 is slidably connected to the extrusion plate 10.

[0035] Specifically, the storage box 8 provides a relatively stable support point for the valve stem 7, so that the valve stem 7 will not wobble or deviate during rotation.

[0036] Reference Figure 3 A sealing ring 13 is fixedly connected to the surface of the butterfly plate 14. The sealing ring 13 is made of rubber.

[0037] Specifically, rubber has sealing properties to prevent liquid leakage.

[0038] Reference Figure 2 and Figure 3 The sealing ring 13 is located on the surface of the valve stem 7, and the valve stem 7 is rotatably connected to the outer cover 1.

[0039] Specifically, the outer cover 1 provides support and positioning for the valve stem 7, enabling the valve stem 7 to maintain a stable axial position during rotation and preventing swaying or deviation.

[0040] Working principle: When it is necessary to rotate the butterfly plate 14 to adjust the butterfly valve opening by a large range, rotate the lower control plate 6. The lower control plate 6 drives the rotating cover 2 to rotate, and the rotating cover 2 drives the first gear 4 on the right to rotate. Since the first gear 4 on the right is meshed with the second gear 5 on the left, the rotation of the first gear 4 on the right will drive the second gear 5 on the left to rotate. Since the second gear 5 on the left is fixedly connected to the valve stem 7, the rotation of the second gear 5 on the left will drive the valve stem 7 to rotate. The valve stem 7 will then drive the butterfly plate 14 to rotate. Since the number of teeth of the first gear 4 is greater than that of the second gear 5, a large gear ratio transmission is formed, which reduces the torque and thus reduces the operating force, achieving the purpose of adjusting the butterfly valve opening with less effort.

[0041] When the butterfly plate 14 rotates to a position close to the closed position or needs to be opened, and the butterfly valve opening needs to be precisely controlled, the upper control plate 6 is rotated. The upper control plate 6 drives the rotating rod 3 to rotate, and the rotating rod 3 drives the second gear 5 on the right to rotate. The second gear 5 on the right meshes with the first gear 4 on the left. The rotation of the second gear 5 on the right will drive the first gear 4 on the left to rotate. Similarly, the first gear 4 on the left is fixedly connected to the valve stem 7. The rotation of the first gear 4 on the left will drive the valve stem 7 to rotate, and the valve stem 7 will then drive the butterfly plate 14 to rotate. At this time, the transmission is carried out with a small gear ratio, which improves the accuracy of operation and solves the problem that the butterfly valve is difficult to accurately control the opening with less effort.

[0042] When the butterfly valve needs lubrication, open the plug 11 at the top of the feed pipe 9. Lubricating medium can be added to the storage box 8 through the feed pipe 9. The surface of the adsorption pad 15 on the bottom wall of the storage box 8 is an open metal shell, and the inside is an oleophilic polymer gel. The oleophilic polymer gel absorbs the lubricating medium through the openings on the surface of the adsorption pad 15 and slowly seeps out onto the valve stem 7, thereby achieving slow automatic lubrication of the valve stem 7. When a large amount of lubricating medium needs to be provided to the valve stem 7 quickly, press the feed pipe 9. The feed pipe 9 drives the extrusion plate 10 to slide downward in the storage box 8. The downward movement of the extrusion plate 10 will squeeze the lubricating medium in the storage box 8, so that a large amount of lubricating medium can quickly pass through the openings on the adsorption pad 15 and enter the surface of the valve stem 7, thus solving the problem of cumbersome butterfly valve lubrication operation.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A butterfly valve with self-lubricating function, comprising an outer cover (1), characterized in that: The outer cover (1) is provided with two first gears (4) and two second gears (5). The top of the first gear (4) on the right is fixedly connected to a rotating cover (2), and the top of the second gear (5) on the right is fixedly connected to a rotating rod (3). The rotating rod (3) is rotatably connected to the rotating cover (2), and the rotating cover (2) is rotatably connected to the outer cover (1). The top of the outer cover (1) is provided with two control discs (6). The upper control disc (6) is fixedly connected to the rotating rod (3), and the lower control disc (6) is fixedly connected to the rotating cover (2). The first gear (4) on the right is meshed with the second gear (5) on the left, and the second gear (5) on the right is meshed with the first gear (4) on the left. The bottom wall of the outer cover (1) is provided with a lubrication assembly for automatically lubricating the butterfly valve.

2. A butterfly valve with self-lubricating function according to claim 1, characterized in that: The lubrication assembly includes a storage box (8), which is fixedly connected to an outer cover (1). A feed pipe (9) is slidably connected to the top of the storage box (8), and a plug (11) is slidably connected to the top of the feed pipe (9). An adsorption pad (15) is fixedly connected to the bottom wall of the storage box (8), and a pipe (12) is fixedly connected to the surface of the adsorption pad (15). An extrusion plate (10) is fixedly connected to the bottom of the feed pipe (9), and the extrusion plate (10) is slidably connected to the storage box (8).

3. A butterfly valve with self-lubricating function according to claim 1, characterized in that: A valve stem (7) is fixedly connected inside the first gear (4) on the left side, and the valve stem (7) is fixedly connected to the second gear (5) on the left side.

4. A butterfly valve with self-lubricating function according to claim 2, characterized in that: The adsorption pad (15) is rotatably connected to the valve stem (7), and a butterfly plate (14) is fixedly connected to the bottom of the valve stem (7).

5. A butterfly valve with self-lubricating function according to claim 2, characterized in that: The surface of the adsorption pad (15) is an open metal shell, and the interior of the adsorption pad (15) is an oleophilic polymer gel.

6. A butterfly valve with self-lubricating function according to claim 3, characterized in that: The valve stem (7) is rotatably connected to the storage box (8), and the valve stem (7) is slidably connected to the extrusion plate (10).

7. A butterfly valve with self-lubricating function according to claim 4, characterized in that: A sealing ring (13) is fixedly connected to the surface of the butterfly plate (14), and the sealing ring (13) is made of rubber.

8. A butterfly valve with self-lubricating function according to claim 7, characterized in that: The sealing ring (13) is located on the surface of the valve stem (7), and the valve stem (7) is rotatably connected to the outer cover (1).

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