Butterfly valve with self-locking function

Abstract

The utility model relates to the technical field of butterfly valves, and discloses a butterfly valve with a self-locking function, which comprises a valve body, a fixing piece fixedly connected to the outer surface of the valve body, a valve arranged on the inner wall of the valve body, and a limiting component arranged at the top of the fixing piece. When equipment needs to be opened, the motor is started to enable the worm to drive the worm gear to rotate, the worm gear rotates to drive the valve to rotate to be opened, after the valve is opened, the worm stops rotating due to operation stopping of the motor, and then the worm gear does not rotate in cooperation with the self-locking effect generated between the worm and the worm gear. And when equipment is maintained, lubricating oil can be put into the flow dividing piece from the feeding port, the lubricating oil passes through the outer surface of the guiding piece when being discharged from the discharging hole, the guiding piece is arranged in the mode that the circular-truncated-cone-shaped end is fixedly connected with the spherical body, and therefore the lubricating oil can accurately drop on the outer surface of the worm to conduct lubricating treatment.

Description

TECHNICAL FIELD

[0001] The utility model relates to butterfly valve technical field, concretely is a butterfly valve with self -locking function. BACKGROUND

[0002] Butterfly valve is also called flap valve, it is a simple structure regulating valve, can be used for low pressure pipeline medium switch control butterfly valve is to refer to the closing piece as disc, rotates around the valve shaft to reach the opening and closing of a kind of valve.

[0003] According to the electric butterfly valve with self-locking function (announcement number: CN222085172U) disclosed, the threaded connection on the connecting pipe can be connected with other pipelines, the sealing ring is used to seal the gap between the connecting pipe and the pipeline to prevent leakage, the filter pipe can filter the liquid in the electric butterfly valve body to prevent the accumulation of sundries in the electric butterfly valve body, and the control switch can control the power on and off of the motor and the electric telescopic rod. When the motor drives the drive rod to rotate, it can drive the blocking plate to rotate to flow the liquid in the electric butterfly valve body. When the motor stops rotating, the output rod of the electric telescopic rod will drive the rotating rod to descend and insert into the hole on the multi-hole turntable to brake the multi-hole turntable, so that the multi-hole turntable cannot rotate to achieve the self-locking effect of the blocking plate.

[0004] However, the above-mentioned device can change the orientation of the multi-hole turntable during the rotation of the motor, and thus the rotating rod cannot be accurately inserted into the hole on the multi-hole turntable when it is lowered, so that the device cannot be well self-locked. In view of this, we propose a butterfly valve with self-locking function. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a butterfly valve with self-locking function to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a butterfly valve with self-locking function, comprising a valve body, the outer surface of the valve body is fixedly connected with a fixing part, the inner wall of the valve body is provided with a valve, the top of the fixing part is provided with a limiting assembly, the limiting assembly comprises:

[0007] The mounting part is fixedly connected at the top of the fixing part, the motor is fixedly connected at the side of the mounting part, the output end of the motor is fixedly connected with a worm, and the end of the valve rod fixedly connected with a worm wheel is arranged on the outer surface of the valve.

[0008] The cover plate is arranged on the upper surface of the mounting part, the upper surface of the cover plate is provided with an inlet, the bottom of the cover plate is fixedly connected with a flow divider, the bottom of the flow divider is provided with an outlet hole, and the bottom of the flow divider is fixedly connected with a guide.

[0009] Preferably, the guide is provided by a circular truncated cone end fixedly connected with a spherical body, and the guide is arranged at a position close to the discharge hole at the bottom of the flow divider, so that the guide can guide the lubricating oil flowing out of the discharge hole.

[0010] Preferably, the feed inlet is arranged at a position corresponding to the center of the flow divider, and the feed inlet is in communication with the inside of the flow divider, so that the lubricating oil can enter the inside of the flow divider through the feed inlet.

[0011] Preferably, the worm is arranged at a position corresponding to the worm gear, and the worm is engaged with the worm gear, so that the worm can drive the worm gear to rotate.

[0012] Preferably, the bottom of the cover plate is provided with a positioning assembly, the positioning assembly comprises a sliding rail fixedly connected to the bottom of the cover plate, a rotating member rotatably connected to the inner wall side of the sliding rail, a threaded rod fixedly connected to the side of the rotating member, a movable block threadedly connected to the outer surface of the threaded rod, and an application member fixedly connected to the bottom of the movable block.

[0013] Preferably, the size of the movable block is adapted to the size of the sliding rail, and the movable block is arranged inside the sliding rail.

[0014] Preferably, the size of the rotating member is adapted to the size of the sliding rail, and the outer surface of the rotating member is arranged to pass through the cover plate.

[0015] Compared with the prior art, the butterfly valve with self-locking function has the following beneficial effects:

[0016] 1. The butterfly valve with self-locking function can better perform self-locking. When the equipment needs to be opened, the motor is started to drive the worm to rotate the worm gear. The worm gear drives the valve to rotate and open when the worm gear rotates. After the valve is opened, the worm stops rotating due to the stop of the motor. The self-locking effect between the worm and the worm gear is used to prevent the worm gear from rotating. Lubricating oil can be put into the flow divider through the feed inlet when the equipment is maintained. The lubricating oil can be accurately dropped on the outer surface of the worm for lubrication through the guide arranged at the circular truncated cone end fixedly connected with the spherical body.

[0017] 2. The butterfly valve with self-locking function can facilitate the maintenance of the worm gear and the worm. After the lubricating oil is dropped on the outer surface of the worm, the rotating member is rotated to rotate the threaded rod. The movable block moves towards the worm gear, and the application member is in contact with the outer surface of the worm gear. The lubricating oil can be evenly applied when the worm gear rotates. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is three-dimensional left view structure schematic view of the utility model;

[0019] Figure 2 It is sectional structure schematic view of the utility model;

[0020] Figure 3 It is cover plate lower view structure schematic view of the utility model;

[0021] Figure 4 It is A area enlarged structure schematic view of the utility model.

[0022] In the figure: 1, valve body;2, fixed part;3, valve;4, limiting assembly;401, mounting part;402, motor;403, worm;404, worm wheel;405, cover plate;406, feed inlet;407, flow dividing part;408, discharge hole;409, guide part;5, positioning assembly;501, sliding rail;502, rotating part;503, threaded rod;504, movable block;505, smearing part. DETAILED DESCRIPTION

[0023] As Figures 1-4 shown, the utility model provides a kind of technical scheme: a butterfly valve with self-locking function, including valve body 1, fixedly connected with fixed part 2 on the outer surface of valve body 1, the inner wall of valve body 1 is provided with valve 3, limiting assembly 4 is arranged on the top of fixed part 2, limiting assembly 4 includes mounting part 401, motor 402, worm 403, worm wheel 404, cover plate 405, feed inlet 406, flow dividing part 407, discharge hole 408 and guide part 409.

[0024] In the embodiment of the utility model, mounting piece 401 fixedly connected at fixed part 2 top, mounting piece 401 side fixedly connected with motor 402, the output of motor 402 fixedly connected with worm 403, the position of worm 403 corresponds with the position of worm wheel 404, worm 403 is engaged with worm wheel 404, this can make worm 403 drive worm wheel 404 to rotate, the valve stem end fixedly connected with worm wheel 404 that valve 3 outer surface sets up, cover plate 405 sets up at mounting piece 401 upper surface place, cover plate 405 upper surface is provided with feed inlet 406, the position of feed inlet 406 corresponds with the center place of shunt piece 407, feed inlet 406 is communicated with shunt piece 407 inside, this makes lubricating oil can be very good through feed inlet 406 enters shunt piece 407 inside, cover plate 405 bottom fixedly connected with shunt piece 407, shunt piece 407 bottom is provided with discharge hole 408, shunt piece 407 bottom fixedly connected with guide 409, guide 409 is provided with spherical body by circular platform end fixedly connected, the position of guide 409 is at shunt piece 407 bottom close to discharge hole 408 place setting, this makes guide 409 can guide the lubricating oil that the discharge hole 408 inside flows out.

[0025] Meanwhile, cover plate 405 bottom is provided with positioning assembly 5, positioning assembly 5 includes slide rail 501, the inner wall side of slide rail 501 is rotatably connected with rotating part 502, the size of rotating part 502 is adapted to the size of slide rail 501, rotating part 502 outer surface is set through cover plate 405, rotating part 502 side fixedly connected with threaded rod 503, the outer surface of threaded rod 503 is threadedly connected with movable block 504, the size of movable block 504 is adapted to the size of slide rail 501, movable block 504 sets up in slide rail 501 inside, movable block 504 bottom fixedly connected with smearing part 505, like this can after lubricating oil drops in the outer surface place of worm 403, rotating rotating part 502 lets threaded rod 503 rotate, like this can make movable block 504 move towards worm wheel 404, let smearing part 505 side and worm wheel 404 outer surface place contact, like this can let lubricating oil be smeared more evenly when worm wheel 404 rotates.

[0026] In the utility model, when the equipment needs to be opened, the motor 402 starts to drive the worm 403 to rotate the worm wheel 404, the worm wheel 404 rotates to drive the valve 3 to rotate and open, after the valve 3 is opened, the worm 403 stops rotating because the motor 402 stops working, and the self-locking effect between the worm 403 and the worm wheel 404 is used to prevent the worm wheel 404 from rotating, and when the equipment is maintained, the lubricating oil can be put into the shunt 407 from the feed inlet 406, and the lubricating oil is discharged from the discharge hole 408 through the outer surface of the guide 409, the guide 409 is fixedly connected with the spherical body by the circular table-shaped end, the lubricating oil can accurately drop on the outer surface of the worm 403 for lubrication, and the equipment can be better self-locked.

[0027] Further, after the lubricating oil drops on the outer surface of the worm 403, the rotating part 502 rotates the threaded rod 503, so that the movable block 504 moves to the worm wheel 404, the side of the smearing part 505 contacts the outer surface of the worm wheel 404, so that the lubricating oil can be smeared more uniformly when the worm wheel 404 rotates.

[0028] The foregoing is a detailed description of the utility model, but some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A butterfly valve with a self-locking function, comprising a valve body (1), wherein a fixing member (2) is fixedly connected to the outer surface of the valve body (1), and a valve (3) is provided on the inner wall of the valve body (1), characterized in that: The top of the fastener (2) is provided with a limiting component (4), the limiting component (4) including: Mounting component (401), which is fixedly connected to the top of the fixing component (2), a motor (402) is fixedly connected to the side of the mounting component (401), a worm gear (403) is fixedly connected to the output end of the motor (402), and a worm wheel (404) is fixedly connected to the end of the valve stem provided on the outer surface of the valve (3). A cover plate (405) is provided on the upper surface of the mounting component (401). The upper surface of the cover plate (405) is provided with a feed inlet (406). A flow divider (407) is fixedly connected to the bottom of the cover plate (405). A discharge hole (408) is opened at the bottom of the flow divider (407). A guide (409) is fixedly connected to the bottom of the flow divider (407).

2. A butterfly valve with a self-locking function according to claim 1, characterized in that: The guide (409) is fixedly connected to a spherical body at the end of a frustum, and the guide (409) is located at the bottom of the diverter (407) near the discharge hole (408).

3. A butterfly valve with a self-locking function according to claim 1, characterized in that: The position of the feed inlet (406) corresponds to the center of the diverter (407), and the feed inlet (406) communicates with the interior of the diverter (407).

4. A butterfly valve with a self-locking function according to claim 1, characterized in that: The worm (403) is positioned corresponding to the worm wheel (404), and the worm (403) meshes with the worm wheel (404).

5. A butterfly valve with a self-locking function according to claim 1, characterized in that: The bottom of the cover plate (405) is provided with a positioning component (5), the positioning component (5) includes a slide rail (501), the slide rail (501) is fixedly connected to the bottom of the cover plate (405), the inner wall side of the slide rail (501) is rotatably connected to a rotating part (502), the side of the rotating part (502) is fixedly connected to a threaded rod (503), the outer surface of the threaded rod (503) is threadedly connected to a movable block (504), and the bottom of the movable block (504) is fixedly connected to an applicator (505).

6. A butterfly valve with a self-locking function according to claim 5, characterized in that: The size of the movable block (504) is adapted to the size of the slide rail (501), and the movable block (504) is disposed inside the slide rail (501).

7. A butterfly valve with a self-locking function according to claim 5, characterized in that: The size of the rotating component (502) is adapted to the size of the slide rail (501), and the outer surface of the rotating component (502) is arranged to pass through the cover plate (405).

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