Adjustable wafer type fluorine-lined butterfly valve

Abstract

The utility model relates to the technical field of valves, in particular to an adjustable wafer type fluorine-lined butterfly valve which comprises a butterfly valve body, a transmission assembly used for driving the butterfly valve body to be opened and closed is arranged at the top of the butterfly valve body, and a length-adjustable crank is arranged on one side of the transmission assembly. The crank comprises a hollow sleeve rod, and a circular through hole is formed in one side of the end of the hollow sleeve rod. The pull ring can be pulled in the direction away from the U-shaped frame, the pull ring drives the positioning rod, so that the end of the positioning rod is pulled out of the positioning groove, the telescopic rod can slide in the hollow sleeve rod, the telescopic rod is pulled out of the hollow sleeve rod, the length of the whole crank is increased, the length of the power arm is increased, and the service life of the power arm is prolonged. According to the butterfly valve, the rotating rod can obtain larger torque, so that when the pressure in a pipeline is too large, the butterfly valve can be easily opened, external equipment is not needed, and the butterfly valve is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to an adjustable wafer type fluorine-lined butterfly valve. Background Technique

[0002] The butterfly plate of the fluorine-lined butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped valve plate rotates around the axis, and the rotation angle is between 0° and 90°. When it rotates to 90°, the valve is in a fully open state. It is widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. The lining material of the fluorine-lined butterfly valve is fluoroplastic, which is used to isolate the erosion and corrosion of the valve body and valve plate by strong alkali organic solvents and other corrosive gas and liquid media with various concentrations transported in the pipeline.

[0003] Application No.: CN202222925243.9 "A wafer type fluorine-lined butterfly valve". By setting a sealing device, when adjusting the state of the pipeline, rotate the handle clockwise. The handle rotates the drive shaft, the drive shaft drives the transmission box, the transmission box drives the baffle, the baffle rotates, and at the same time the connecting flange closes, and then the pipeline can be closed. When assembling the butterfly valve, the sealing ring and the connecting frame are respectively sleeved on the drive shaft, the sealing ring is pushed to the preset area, and the two side sleeves are aligned with the sealing ring. At the same time, the two side sleeves are pushed, and the two side sleeves are buckled to the surface of the limit frame and the sealing ring. Then the connecting frame is pushed. After the connecting frame is inserted into the guiding groove, the pin is inserted into the slot, and at the same time the positioning bolt is inserted into the assembly hole. Rotate the positioning bolt, and the positioning bolt is gradually screwed into the thread groove, and the connecting frame is fixed on the two side sleeves, and then the installation operation of the sealing device is completed. By setting the sealing device, the sealing performance at the connection of the drive shaft of the butterfly valve is improved, thereby reducing the probability of medium infiltration causing internal structure rusting, improving the stability of the drive mechanism of the butterfly valve, and improving the use effect of the butterfly valve.

[0004] However, the handle of the above wafer type fluorine-lined butterfly valve cannot be adjusted. When the pressure in the pipeline is too high, the force required to drive the butterfly valve is also large. As a result, external equipment is needed to open and close the valve, which is very inconvenient to use. Content of the Utility Model

[0005] The purpose of the utility model is to provide an adjustable wafer type fluorine-lined butterfly valve to increase the length of the power arm of the crank to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an adjustable wafer type fluorine-lined butterfly valve, including a butterfly valve body. A transmission component for driving the opening and closing of the butterfly valve body is provided at the top of the butterfly valve body, and a crank with adjustable length is provided on one side of the transmission component.

[0007] Among them, the crank includes: a hollow sleeve rod, a circular through hole is provided on one side of the end of the hollow sleeve rod, the inner wall of the hollow sleeve rod is slidably sleeved on the side of the telescopic rod, several groups of positioning grooves are equidistantly provided on one side of the telescopic rod, one end of the telescopic rod is fixedly connected to one end of the handle, and a positioning member for fixing the telescopic rod is provided at the position of the circular through hole on the side of the hollow sleeve rod.

[0008] Preferably, the positioning member includes: a U-shaped frame, both ends of the U-shaped frame are fixedly connected to the position of the circular through hole on the side of the hollow sleeve rod, and one side of the U-shaped frame is slidably sleeved on the outside of the positioning rod.

[0009] Preferably, one end of the positioning rod is fixedly connected to the outside of the pull ring, and the other end of the positioning rod is slidably inserted into the circular through hole and the positioning groove.

[0010] Preferably, the outside of the positioning rod is fixedly connected to the inner ring of the limiting plate, a return spring is provided between the limiting plate and the U-shaped frame, and the inner ring of the return spring is slidably sleeved on the outside of the positioning rod.

[0011] Preferably, the transmission assembly includes: a support block, the inside of the support block is rotatably connected to the outside of the rotating rod, and one end of the rotating rod is fixedly connected to the end of the hollow sleeve rod.

[0012] Preferably, the outside of the rotating rod is fixedly inserted into the inner ring of the worm, and the outside of the worm is engaged with the outside of the worm gear.

[0013] Preferably, the butterfly valve body includes: a valve body, the outside of the valve body is fixedly connected to the bottom of the support block, and the inner ring of the valve body is slidably connected to the outside of the baffle.

[0014] Preferably, the outside of the baffle is fixedly connected to the bottom end of the rotating shaft, and the top end of the rotating shaft is fixedly inserted into the inner ring of the worm gear.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] In the present utility model, the pull ring can be pulled in a direction away from the U-shaped frame, the pull ring drives the positioning rod, so that the end of the positioning rod is withdrawn from the positioning groove, and in this way, the telescopic rod can slide in the hollow sleeve rod. The telescopic rod is pulled out of the hollow sleeve rod, thereby increasing the length of the entire crank, and further increasing the length of the power arm, so that the rotating rod can obtain a greater torque. In this way, when the pressure in the pipeline is too high, the butterfly valve can also be easily opened without the aid of external equipment, making the butterfly valve more convenient to use.

[0017] Other features and advantages of the present utility model will be described in the subsequent description, and in part, will be obvious from the description, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures pointed out in the description and the drawings. Brief Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the structure of the butterfly valve body of the present utility model;

[0020] Figure 3 is a schematic diagram of the structure of the transmission assembly of the present utility model;

[0021] Figure 4 is a schematic diagram of the structure of the crank of the present utility model;

[0022] Figure 5 is a schematic diagram of the structure of the positioning member of the present utility model.

[0023] In the figure: 1, crank; 11, handle; 12, telescopic rod; 13, hollow sleeve rod; 14, positioning groove; 15, circular through hole; 16, positioning member; 161, pull ring; 162, U-shaped frame; 163, return spring; 164, limiting plate; 165, positioning rod; 2, transmission assembly; 21, support block; 22, worm; 23, worm gear; 24, rotating rod; 3, butterfly valve body; 31, rotating shaft; 32, baffle; 33, valve body. Detailed Description of the Preferred Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-5 , the present utility model provides a technical solution: an adjustable wafer type lined fluorine butterfly valve, comprising: a butterfly valve body 3, a transmission assembly 2 for driving the opening and closing of the butterfly valve body 3 is provided at the top of the butterfly valve body 3, and an adjustable-length crank 1 is provided on one side of the transmission assembly 2.

[0026] The crank handle 1 includes: a hollow sleeve rod 13, a circular through hole 15 is provided on one side of the end of the hollow sleeve rod 13, the inner wall of the hollow sleeve rod 13 is slidably sleeved on the side of the telescopic rod 12, a number of groups of positioning grooves 14 are equidistantly arranged on one side of the telescopic rod 12, one end of the telescopic rod 12 is fixedly connected to one end of the handle 11, and a positioning member 16 for fixing the telescopic rod 12 is provided at the position of the circular through hole 15 on the side of the hollow sleeve rod 13.

[0027] Further, when the pressure in the pipeline is too high and the force required to drive the butterfly valve is also large, the pull ring 161 can be pulled away from the U-shaped frame 162. The pull ring 161 drives the positioning rod 165, so that the end of the positioning rod 165 is withdrawn from the positioning groove 14. In this way, the telescopic rod 12 can slide within the hollow sleeve rod 13. The telescopic rod 12 is pulled out from the hollow sleeve rod 13 to increase the length of the entire crank handle 1, thereby increasing the length of the power arm and enabling the rotating rod 24 to obtain a greater torque. In this way, when the pressure in the pipeline is too high, the butterfly valve can also be easily opened without the aid of external equipment, making the butterfly valve more convenient to use.

[0028] The positioning member 16 includes: a U-shaped frame 162, both ends of the U-shaped frame 162 are fixedly connected to the position of the circular through hole 15 on the side of the hollow sleeve rod 13, and one side of the U-shaped frame 162 is slidably sleeved on the outside of the positioning rod 165. One end of the positioning rod 165 is fixedly connected to the outside of the pull ring 161, and the other end of the positioning rod 165 is slidably inserted into the circular through hole 15 and the positioning groove 14. The outside of the positioning rod 165 is fixedly connected to the inner ring of the limiting plate 164, and a return spring 163 is provided between the limiting plate 164 and the U-shaped frame 162. The inner ring of the return spring 163 is slidably sleeved on the outside of the positioning rod 165.

[0029] Further, when the telescopic rod 12 is pulled out from the hollow sleeve rod 13 to an appropriate length, the pull ring 161 is released. At this time, the return spring 163 rebounds and pushes the limiting plate 164 to move towards the circular through hole 15. The limiting plate 164 drives the positioning rod 165 to move, so that the positioning rod 165 is inserted into the circular through hole 15 and the positioning groove 14. In this way, the telescopic rod 12 cannot be telescoped within the hollow sleeve rod 13.

[0030] The transmission assembly 2 includes: a support block 21, the inside of the support block 21 is rotatably connected to the outside of the rotating rod 24, and one end of the rotating rod 24 is fixedly connected to the end of the hollow sleeve rod 13. The outside of the rotating rod 24 is fixedly inserted into the inner ring of the worm 22, and the outside of the worm 22 is engaged with the outside of the worm gear 23.

[0031] The butterfly valve body 3 includes: a valve body 33, the outside of the valve body 33 is fixedly connected to the bottom of the support block 21, and the inner ring of the valve body 33 is slidably connected to the outside of the baffle 32. The outside of the baffle 32 is fixedly connected to the bottom end of the rotating shaft 31, and the top end of the rotating shaft 31 is fixedly inserted into the inner ring of the worm gear 23.

[0032] Further, when it is necessary to open or close the butterfly valve, hold the handle 11 by hand, drive the telescopic rod 12 and the hollow sleeve rod 13 to rotate through the handle 11, the hollow sleeve rod 13 drives the rotating rod 24 to rotate, the rotating rod 24 drives the worm 22 to rotate, the worm 22 drives the worm wheel 23 to rotate, and the worm wheel 23 drives the baffle 32 to rotate through the rotating shaft 31, so as to realize the opening and closing of the baffle 32.

[0033] Working principle: When it is necessary to open or close the butterfly valve, hold the handle 11 by hand, drive the telescopic rod 12 and the hollow sleeve rod 13 to rotate through the handle 11, the hollow sleeve rod 13 drives the rotating rod 24 to rotate, the rotating rod 24 drives the worm 22 to rotate, the worm 22 drives the worm wheel 23 to rotate, and the worm wheel 23 drives the baffle 32 to rotate through the rotating shaft 31, so as to realize the opening and closing of the baffle 32;

[0034] When the pressure in the pipeline is too high and the force required to drive the butterfly valve is also large, the pull ring 161 can be pulled away from the U-shaped frame 162. The pull ring 161 drives the positioning rod 165, so that the end of the positioning rod 165 is withdrawn from the positioning groove 14. In this way, the telescopic rod 12 can slide in the hollow sleeve rod 13. Pull out the telescopic rod 12 from the hollow sleeve rod 13 to increase the length of the entire crank 1, thereby increasing the length of the power arm and enabling the rotating rod 24 to obtain a greater torque. In this way, when the pressure in the pipeline is too high, the butterfly valve can also be easily opened without the aid of external equipment, making the butterfly valve more convenient to use. After the telescopic rod 12 is pulled out from the hollow sleeve rod 13 to an appropriate length, release the pull ring 161. At this time, the return spring 163 rebounds and pushes the limiting plate 164 to move towards the circular through hole 15. The limiting plate 164 drives the positioning rod 165 to move, so that the positioning rod 165 is inserted into the circular through hole 15 and the positioning groove 14, and in this way, the telescopic rod 12 cannot be telescoped in the hollow sleeve rod 13.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable wafer-type fluorine-lined butterfly valve, characterized in that, It includes a butterfly valve body (3). A transmission component (2) for driving the opening and closing of the butterfly valve body (3) is provided at the top of the butterfly valve body (3). A crank (1) with an adjustable length is provided on one side of the transmission component (2). Among them, the crank (1) includes: a hollow sleeve rod (13). A circular through hole (15) is formed on one side of the end of the hollow sleeve rod (13). The inner wall of the hollow sleeve rod (13) is slidably sleeved on the side of the telescopic rod (12). A number of groups of positioning grooves (14) are equidistantly formed on one side of the telescopic rod (12). One end of the telescopic rod (12) is fixedly connected to one end of the handle (11). A positioning member (16) for fixing the telescopic rod (12) is provided at the position of the circular through hole (15) on the side of the hollow sleeve rod (13).

2. The adjustable wafer type fluorine-lined butterfly valve according to claim 1, characterized in that: The positioning member (16) includes: A U-shaped frame (162). The two ends of the U-shaped frame (162) are fixedly connected to the position of the circular through hole (15) on the side of the hollow sleeve rod (13). One side of the U-shaped frame (162) is slidably sleeved on the outside of the positioning rod (165).

3. The adjustable wafer type fluorine-lined butterfly valve according to claim 2, characterized in that: One end of the positioning rod (165) is fixedly connected to the outside of the pull ring (161). The other end of the positioning rod (165) is slidably inserted into the circular through hole (15) and the positioning groove (14).

4. The adjustable wafer type fluorine-lined butterfly valve according to claim 3, wherein: The outside of the positioning rod (165) is fixedly connected to the inner ring of the limit plate (164). A return spring (163) is provided between the limit plate (164) and the U-shaped frame (162). The inner ring of the return spring (163) is slidably sleeved on the outside of the positioning rod (165).

5. The adjustable wafer type fluorine-lined butterfly valve according to claim 1, wherein: The transmission component (2) includes: a support block (21). The inside of the support block (21) is rotatably connected to the outside of the rotating rod (24). One end of the rotating rod (24) is fixedly connected to the end of the hollow sleeve rod (13).

6. The adjustable wafer-type fluorine-lined butterfly valve according to claim 5, characterized in that: The outside of the rotating rod (24) is fixedly inserted into the inner ring of the worm (22). The outside of the worm (22) is engaged with the outside of the worm gear (23).

7. The adjustable wafer type fluorine-lined butterfly valve according to claim 6, characterized in that: The butterfly valve body (3) includes: a valve body (33). The outside of the valve body (33) is fixedly connected to the bottom of the support block (21). The inner ring of the valve body (33) is slidably connected to the outside of the baffle (32).

8. The adjustable wafer-type fluorine-lined butterfly valve according to claim 7, wherein: The outside of the baffle (32) is fixedly connected to the bottom end of the rotating shaft (31). The top end of the rotating shaft (31) is fixedly inserted into the inner ring of the worm gear (23).

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