CN213575581U

CN213575581U - Butterfly valve capable of accurately controlling flow

Info

Publication number: CN213575581U
Application number: CN202021828916.3U
Authority: CN
Inventors: 段树龙
Original assignee: Tianjin Yifa Technology Co ltd
Current assignee: Tianjin Yifa Technology Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-06-29
Anticipated expiration: 2030-08-27

Abstract

The utility model discloses a but butterfly valve of accurate control flow belongs to valve technical field, including the butterfly valve main part, the inside of butterfly valve main part is provided with the sealing washer, the inside of sealing washer is provided with the butterfly plate, the inside of butterfly plate is provided with the valve rod, the top of butterfly valve main part is fixed with adjusts the frame, the one end of valve rod runs through the butterfly valve main part and extends to the inside of adjusting the frame, the outside on valve rod top is fixed with first gear, the top of first gear is provided with the second gear, second gear and valve rod fixed connection, the inside rotation of adjusting the frame is connected with the pivot. The utility model discloses can play the effect to the restriction of valve rod turned angle according to the gear of the different diameters of use to the difference of flow size demand, make the butterfly plate can realize more slight angular rotation, and then reach the purpose of accurate regulated flow to can adapt to different use scenes, enlarged the application range of butterfly valve.

Description

Butterfly valve capable of accurately controlling flow

Technical Field

The utility model relates to a butterfly valve especially relates to a but butterfly valve of accurate control flow belongs to valve technical field.

Background

The butterfly valve is a flap valve, can control the passing of the fluid through the radial rotation of the butterfly plate, the range of the rotation angle is 0-90 degrees, the flow can be controlled and adjusted to a certain extent along with the adjustment of the angle, the integral structure is simple, the volume is small, the operation is convenient, and the flap valve can play a good role in cutting off and throttling in the pipeline transportation of various types of gas, oil gas and other fluids;

some butterfly valve opening and closing parts on the existing market are disc-shaped butterfly plates, and rotate around the axis of the butterfly plates in a valve body, so that the opening and closing or adjusting purpose is achieved, but the flow control is often not accurate enough, the requirements of some accurate flow control cannot be met, and the application range and the field of the butterfly valve are limited.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a but butterfly valve of accurate control flow to solve the inaccurate problem of flow control among the prior art.

The purpose of the utility model can be achieved by adopting the following technical scheme:

a butterfly valve capable of accurately controlling flow comprises a butterfly valve body, wherein a sealing ring is arranged inside the butterfly valve body, a butterfly plate is arranged inside the sealing ring, a valve rod is arranged inside the butterfly plate, an adjusting frame is fixed at the top of the butterfly valve body, one end of the valve rod penetrates through the butterfly valve body and extends into the adjusting frame, a first gear is fixed on the outer side of the top end of the valve rod, a second gear is arranged at the top of the first gear, the second gear is fixedly connected with the valve rod, a rotating shaft is rotatably connected inside the adjusting frame, a main gear is fixed on the outer side of the rotating shaft, a worm wheel is fixed on the outer side of the top end of the rotating shaft, a worm is rotatably connected inside the adjusting frame, the worm is meshed with the worm wheel, internal thread pipes are fixed on the inner top wall and the inner bottom wall of the adjusting frame, and external thread pipes are in the two sets of the internal, two sets of the inside of external screw pipe rotates respectively and is connected with first pinion and second pinion, one side of butterfly valve main part is provided with filtering component, one side of adjusting the frame is provided with spacing subassembly.

Preferably: the filter assembly comprises a mounting hole, a filter screen cover and a bolt, wherein one side of the butterfly valve main body is uniformly arranged on the mounting hole, the filter screen cover is positioned on one side of the butterfly valve main body, the bolt is uniformly fixed on one side of the filter screen cover, and the size of the bolt is matched with that of the mounting hole.

Preferably: the limiting assembly comprises a rotary table, a connecting rod and a spring, the rotary table is located at one end of the worm, the connecting rod is located on one side of the adjusting frame and is hinged to the adjusting frame, the spring is fixed to the outer side of one end of the connecting rod, a sleeve is fixedly connected to one end of the spring, and the sleeve is movably connected with the connecting rod.

Preferably: the inner side of the sleeve is provided with a friction increasing pad which is a rubber friction increasing pad.

Preferably: the outer side of the internal thread pipe is provided with a rotating handle, and the outer side of the rotating handle is provided with anti-skid grains.

Preferably: the number of the main gears is two, the two main gears are the same in size, the diameter of the first auxiliary gear is smaller than that of the second auxiliary gear, and the diameter of the first gear is smaller than that of the second gear.

The utility model has the advantages that:

the utility model provides a pair of but butterfly valve of accurate control flow: through the mutual matching use of the adjusting frame, the first gear, the second gear, the rotating shaft, the main gear, the worm wheel, the worm, the internal threaded pipe, the external threaded pipe, the first pinion and the second pinion, gears with different diameters can be used according to different flow requirements, the effect of limiting the rotation angle of the valve rod is achieved, the butterfly plate can realize finer angle rotation, the purpose of accurately adjusting the flow is further achieved, therefore, the butterfly valve can adapt to different use scenes, and the use range of the butterfly valve is expanded; through the mutual matching use of the mounting hole, the filter screen cover and the bolt, large particles in liquid can be blocked on one side of the filter screen at the input port, so that the quality of the liquid is improved on one hand, and the abrasion problem of the large particles to a sealing ring in a butterfly valve can be reduced on the other hand, thereby prolonging the service life of the butterfly valve sealing ring; through mutually supporting use of carousel, connecting rod, spring, sleeve pipe and couple, when adjusting into fixed angle with valve rod and butterfly plate, carry out spacing fixed to the carousel, prevent that butterfly plate and valve rod from leading to the valve rod gyration because of rivers factor to lead to the problem that the velocity of flow produced the change to keep the stability of flow.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

fig. 2 is an enlarged view of the structure at a in fig. 1 of the present invention;

fig. 3 is a side view of the present invention;

fig. 4 is a schematic view of the strainer cover of the present invention;

fig. 5 is a schematic view of the hook of the present invention.

In the figure: 1. a butterfly valve body; 2. mounting holes; 3. a seal ring; 4. a butterfly plate; 5. a valve stem; 6. an adjusting frame; 7. a first gear; 8. a second gear; 9. a rotating shaft; 10. a main gear; 11. a worm gear; 12. a worm; 13. an internally threaded tube; 14. an externally threaded tube; 15. a first counter gear; 16. a second counter gear; 17. a filter screen cover; 18. a bolt; 19. a turntable; 20. a connecting rod; 21. a spring; 22. a sleeve; 23. and (4) hanging hooks.

Detailed Description

In order to make the technical solutions of the present invention clearer and clearer for those skilled in the art, the present invention will be described in further detail with reference to the following embodiments and drawings, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1-5, the present embodiment provides a butterfly valve capable of accurately controlling flow, which includes a butterfly valve body 1, a sealing ring 3 is disposed inside the butterfly valve body 1, a butterfly plate 4 is disposed inside the sealing ring 3, a valve rod 5 is disposed inside the butterfly plate 4, an adjusting frame 6 is fixed on the top of the butterfly valve body 1, one end of the valve rod 5 penetrates through the butterfly valve body 1 and extends into the adjusting frame 6, a first gear 7 is fixed on the outer side of the top end of the valve rod 5, a second gear 8 is disposed on the top of the first gear 7, the second gear 8 is fixedly connected with the valve rod 5, a rotating shaft 9 is rotatably connected inside the adjusting frame 6, a main gear 10 is fixed on the outer side of the rotating shaft 9, a worm wheel 11 is fixed on the outer side of the top end of the rotating shaft 9, a worm 12 is rotatably connected inside the adjusting frame 6, the worm 12 is engaged with the worm wheel 11, an inner top wall, the two groups of internal thread pipes 13 are internally and respectively in threaded connection with an external thread pipe 14, the two groups of external thread pipes 14 are internally and respectively in rotary connection with a first pinion 15 and a second pinion 16, one side of the butterfly valve main body 1 is provided with a filtering component, and one side of the adjusting frame 6 is provided with a limiting component.

In this embodiment, as shown in fig. 1-4, the filter assembly includes a mounting hole 2, a filter screen cover 17 and bolts 18, one side of the butterfly valve main body 1 is evenly provided with the mounting hole 2, the filter screen cover 17 is located one side of the butterfly valve main body 1, one side of the filter screen cover 17 is evenly fixed with the bolts 18, the size of the bolts 18 matches with the size of the mounting hole 2, the bolts 18 on one side of the filter screen cover 17 are respectively inserted into the mounting hole 2, and the filter screen cover 17 is fixed on one side of the butterfly valve main body 1 through nuts, the filter screen cover 17 filters large-particle impurities at an inlet, large particles in liquid are blocked at one side of a filter screen at an input port, on one hand, the quality of the liquid is improved, on the other hand, the problem of abrasion of the sealing ring in the butterfly.

In this embodiment, as shown in fig. 5, the limiting component includes a rotary disc 19, a connecting rod 20 and a spring 21, the rotary disc 19 is located at one end of the worm 12, the connecting rod 20 is located at one side of the adjusting frame 6, and the connecting rod 20 is hinged to the adjusting frame 6, the spring 21 is fixed at the outer side of one end of the connecting rod 20, one end of the spring 21 is fixedly connected with a sleeve 22, the sleeve 22 is movably connected with the connecting rod 20, after the valve rod 5 is fixed at an angle, the sleeve 22 is pulled, and a hook 23 at one end of the sleeve 22 is clamped at the outer side of the rotary disc 19, under the elastic force of the spring 21, the sleeve 22 and the hook 23 are pulled towards the direction of the adjusting frame 6, so that the hook 23 is tightly attached at the outer side of the rotary disc 19 to limit the rotary disc 19, and the problem that the flow.

In this embodiment, as shown in fig. 5, the inner side of the sleeve 22 is provided with a friction increasing pad, and the friction increasing pad is a rubber friction increasing pad, so that the friction increasing pad in the sleeve 22 can increase the friction force with the outer side of the turntable 19 to prevent the turntable 19 from rotating.

In this embodiment, as shown in fig. 2, a turning handle is disposed on the outer side of the internal threaded tube 13, and an anti-slip pattern is disposed on the outer side of the turning handle, so that people can conveniently rotate the internal threaded tube 13 by the turning handle and the anti-slip pattern.

In the present embodiment, as shown in fig. 1, the number of the main gears 10 is two, and the two main gears 10 are the same in size, the diameter of the first pinion 15 is smaller than the diameter of the second pinion 16, the diameter of the first gear 7 is smaller than the diameter of the second gear 8, when the first pinion 15 meshes with the main gear 10 and the second gear 8 at the same time, the worm 12 is rotated, the worm 12 drives the second gear 8 to rotate through the main gear 10 and the first pinion 15, and the diameter of the second gear 8 is larger, so that the angle of rotation of the first pinion 15 driving the second gear 8 is smaller, so that the rotation angle of the butterfly plate 4 and the valve rod 5 is smaller, the adjustment is more accurate, and the diameter of the first gear 7 is smaller than the diameter of the second gear 8, the angle of each rotation is larger, the accuracy is reduced, and can be changed according to the usage scenario.

As shown in fig. 1 to 5, the present embodiment provides a butterfly valve capable of accurately controlling a flow rate, which operates as follows:

step 1: according to requirements, an external threaded pipe 14 at the top or the bottom of the adjusting frame 6 is rotated, the external threaded pipe 14 moves upwards or downwards under the meshing of the internal threaded pipe 13, the external threaded pipe 14 drives a first pinion 15 or a second pinion 16 to lift, and then the first pinion 15 is clamped or separated between the second gear 8 and the main gear 10, or the second pinion 16 is clamped or separated between the first gear 7 and the main gear 10;

step 2: rotating a turntable 19, wherein the turntable 19 drives a worm wheel 11 to rotate through a worm 12, the worm wheel 11 drives a main gear 10 to rotate through a rotating shaft 9, the main gear 10 drives a second gear 8 or a first gear 7 to rotate through a first pinion 15 and a second pinion 16, and further drives a valve rod 5 and a butterfly plate 4 to rotate, so that the valve rod 5 rotates at a more accurate angle, and flow is adjusted;

and step 3: bolts 18 on one side of the filter screen cover 17 are respectively inserted into the mounting holes 2, the filter screen cover 17 is fixed on one side of the butterfly valve main body 1 through nuts, and large-particle impurities at an inlet are filtered by the filter screen cover 17.

The above description is only a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can replace or change the technical solution and the concept of the present invention within the scope of the present invention.

Claims

1. The utility model provides a but butterfly valve of accurate control flow which characterized in that: comprises a butterfly valve main body (1), a sealing ring (3) is arranged in the butterfly valve main body (1), a butterfly plate (4) is arranged in the sealing ring (3), a valve rod (5) is arranged in the butterfly plate (4), an adjusting frame (6) is fixed at the top of the butterfly valve main body (1), one end of the valve rod (5) penetrates through the butterfly valve main body (1) and extends into the adjusting frame (6), a first gear (7) is fixed at the outer side of the top end of the valve rod (5), a second gear (8) is arranged at the top of the first gear (7), the second gear (8) is fixedly connected with the valve rod (5), a rotating shaft (9) is connected in the inner rotation of the adjusting frame (6), a main gear (10) is fixed at the outer side of the rotating shaft (9), a worm wheel (11) is fixed at the outer side of the top end of the rotating shaft (9), a worm (12) is connected in the inner rotation of the adjusting frame (, worm (12) and worm wheel (11) mesh mutually, the interior roof and the interior diapire of adjusting frame (6) all are fixed with internal thread pipe (13), and are two sets of the inside of internal thread pipe (13) all threaded connection have external screw thread pipe (14), and are two sets of the inside of external screw thread pipe (14) is rotated respectively and is connected with first pinion (15) and second pinion (16), one side of butterfly valve main part (1) is provided with filtering component, one side of adjusting frame (6) is provided with spacing subassembly.

2. A butterfly valve with precise flow control according to claim 1, wherein: the filter assembly comprises a mounting hole (2), a filter screen cover (17) and bolts (18), one side of the butterfly valve main body (1) is uniformly arranged in the mounting hole (2), the filter screen cover (17) is located on one side of the butterfly valve main body (1), the bolts (18) are uniformly fixed on one side of the filter screen cover (17), and the size of the bolts (18) is matched with the size of the mounting hole (2).

3. A butterfly valve with precise flow control according to claim 1, wherein: spacing subassembly includes carousel (19), connecting rod (20) and spring (21), carousel (19) is located the one end of worm (12), connecting rod (20) are located the one side of adjusting frame (6), and connecting rod (20) are articulated mutually with adjusting frame (6), the outside of connecting rod (20) one end is fixed with spring (21), the one end fixedly connected with sleeve pipe (22) of spring (21), sleeve pipe (22) and connecting rod (20) swing joint.

4. A butterfly valve with precise flow control according to claim 3, wherein: and the inner side of the sleeve (22) is provided with a friction increasing pad which is a rubber friction increasing pad.

5. A butterfly valve with precise flow control according to claim 1, wherein: the outer side of the internal thread pipe (13) is provided with a rotating handle, and the outer side of the rotating handle is provided with anti-skid grains.

6. A butterfly valve with precise flow control according to claim 1, wherein: the number of the main gears (10) is two, the two main gears (10) are the same in size, the diameter of the first auxiliary gear (15) is smaller than that of the second auxiliary gear (16), and the diameter of the first gear (7) is smaller than that of the second gear (8).