CN215258123U

CN215258123U - Butterfly valve worm gear

Info

Publication number: CN215258123U
Application number: CN202121144087.1U
Authority: CN
Inventors: 赵东旭
Original assignee: Tianjin Ruideshi Valve Co ltd
Current assignee: Tianjin Ruideshi Valve Co ltd
Priority date: 2021-05-26
Filing date: 2021-05-26
Publication date: 2021-12-21
Anticipated expiration: 2031-05-26

Abstract

The utility model provides a butterfly valve worm wheel head, which belongs to the technical field of valves and comprises a worm wheel head body, wherein the worm wheel head body is of a cavity structure, a rotating shaft is rotatably connected between the front inner wall and the rear inner wall of the worm wheel head body, the circumferential surface of the rotating shaft is fixedly connected with a worm wheel, the left inner wall of the worm wheel head body is rotatably connected with a worm, the right end of the worm movably penetrates through the right end of the worm wheel head body rightwards and extends rightwards, the worm is meshed with the worm wheel, the left inner wall and the right inner wall of the worm wheel head body are fixedly connected with second fixed blocks, the lower ends of the two second fixed blocks are fixedly connected with slide bars, the lower ends of the two slide bars are fixedly connected with the lower inner wall of the worm wheel head body, the circumferential surfaces of the two slide bars are sleeved with slide blocks, and the slide bars, the pull rings and the return springs are matched with each other through the fixed blocks, so as to facilitate the limiting of the worm wheel, and the worm wheel can be prevented from rotating when the worm is not used for throttling, the stability of the device is ensured.

Description

Butterfly valve worm gear

Technical Field

The utility model belongs to the technical field of the valve, concretely relates to butterfly valve worm wheel head.

Background

The butterfly valve has the main functions of cutting off a medium or regulating the flow of the medium in a pipeline, has simple structure and small fluid resistance, the sealing surfaces of a valve plate and a valve seat are isolated from the medium, and a channel is streamline and smooth and is not easy to deposit the medium.

The worm gear head is a mechanism for controlling the opening of a butterfly valve and the flow of a medium. Among the prior art, the worm gear does not possess the instruction function, and when using, the flow size of valve is not convenient for to control, under dim environment, more difficult the operating condition who judges the worm gear very much, influences the work degree of difficulty, and in addition, the inside turbine of current worm gear is not hard up easily, when not adjusting, receives hydraulic effect and takes place the rotation easily, and the structure is unstable, influences the size of flow.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a butterfly valve worm wheel head aims at solving the worm wheel head among the prior art and does not possess the instruction function, when using, is not convenient for control the flow size of valve, under dim environment, is more difficult to judge the operating condition of worm wheel head, influences the work degree of difficulty, and in addition, the inside turbine of current worm wheel head is not hard up easily, when not adjusting, receives hydraulic effect and takes place the rotation easily, and unstable structure influences the problem of the size of flow.

In order to achieve the above object, the utility model provides a following technical scheme:

a butterfly valve worm-gear head comprises a worm-gear head body, wherein the worm-gear head body is of a cavity structure, a rotating shaft is rotatably connected between the front inner wall and the rear inner wall of the worm-gear head body, a worm wheel is fixedly connected to the circumferential surface of the rotating shaft, a worm is rotatably connected to the left inner wall of the worm-gear head body, the right end of the worm movably penetrates through the right end of the worm-gear head body rightwards and extends rightwards, the worm is meshed with the worm wheel, the left inner wall and the right inner wall of the worm-gear head body are fixedly connected with second fixed blocks, the lower ends of the two second fixed blocks are fixedly connected with slide bars, the lower ends of the two slide bars are fixedly connected to the lower inner wall of the worm-gear head body, a slide block is sleeved on the circumferential surface of the two slide bars, two first springs are fixedly connected to the upper end of the slide block, and the upper ends of the two first springs are respectively fixedly connected to the lower ends of the two second fixed blocks, the two first springs are respectively sleeved on the circumferential surfaces of the two sliding rods, a second screw rod is connected to the lower end of the worm gear head body in a threaded mode, the second screw rod penetrates through the lower inner wall of the worm gear head body in an upward movable mode and extends upwards, a clamping block is fixedly connected to the upper end of the sliding block, an arc-shaped groove is formed in the front end of the worm gear head body, a disc is fixedly connected to the front end of the arc-shaped groove of the worm gear head body, two thread grooves are formed in the front end of the worm gear, first screws are connected to the two thread grooves in a threaded mode, nuts are fixedly connected to the two front ends of the first screws, a pointer is rotatably connected to the front end of the disc, two first fixing blocks are fixedly connected to the front end of the worm gear head body, and a dial gauge is fixedly connected between the end portions, close to the two first fixing blocks.

As an optimized scheme, the right-hand member fixedly connected with hand wheel of worm, the section of hand wheel is trapezoidal.

As an optimized proposal of the utility model, the circumference surface of the hand wheel is carved with anti-skid lines.

As an optimized scheme of the utility model, the inner wall of worm wheel head body is equipped with sealed the pad.

As an optimal scheme of the utility model, two second springs of lower extreme fixedly connected with of slider, two the equal fixed connection of lower extreme of second spring is in the last inner wall of worm wheel head body, and two second springs overlap respectively and locate the circumferential surface of two slide bars.

As an optimal scheme of the utility model, the lower extreme fixedly connected with hand screw rod head of second screw rod, the section of hand screw rod head is the pentagon.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in the device, a worm is driven to rotate by rotating a hand wheel, the worm rotates to drive a worm wheel to rotate, the worm wheel drives a rotating shaft to rotate, the rotating shaft rotates to drive a disc to rotate, the disc rotates to drive a pointer to rotate, when the pointer rotates to a specified scale of a scale, the hand wheel is stopped rotating, at the moment, a hand screw head is rotated to drive a second screw to perform threaded motion, the second screw moves upwards, an extrusion sliding block moves upwards along a sliding rod, the sliding block moves upwards to extrude a first spring, the second spring is stretched, the sliding block moves upwards to drive a clamping block to move upwards, the worm wheel can be clamped by the upward movement of the clamping block, the worm wheel is prevented from rotating again, a limiting effect is achieved, the disc, an indication arrow and indication scale are arranged, the worm wheel head has an indication function, and a worker can conveniently control the size of a valve clack inside the butterfly valve, the flow of valve is convenient to control, and simple structure is convenient for assemble moreover.

2. In this device, through the cooperation setting between fixed block, rack, dead lever, pull ring and the return spring, be convenient for carry out limiting displacement to the turbine, can avoid the turbine to take place to rotate when not adjusting the turbine, guarantee the stability of device.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a left sectional view of the present invention;

FIG. 2 is a right sectional view of the present invention;

fig. 3 is a front view of the present invention.

In the figure: 1. a worm gear head body; 2. a worm; 3. a hand wheel; 4. a dial gauge; 5. a first fixed block; 6. a disc; 7. a nut; 8. a pointer; 9. a worm gear; 10. a second fixed block; 11. a first screw; 12. a rotating shaft; 13. a slide bar; 14. a first spring; 15. a second spring; 16. a second screw; 17. screwing the screw head by hand; 18. a slider; 19. and (7) clamping blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-3, the present invention provides the following technical solutions:

a butterfly valve worm-gear head comprises a worm-gear head body 1, the worm-gear head body 1 is of a cavity structure, a rotating shaft 12 is rotatably connected between the front inner wall and the rear inner wall of the worm-gear head body 1, a worm wheel 9 is fixedly connected to the circumferential surface of the rotating shaft 12, a worm 2 is rotatably connected to the left inner wall of the worm-gear head body 1, the right end of the worm 2 movably penetrates through the right end of the worm-gear head body 1 rightwards and extends rightwards, the worm 2 is meshed with the worm wheel 9, the left inner wall and the right inner wall of the worm-gear head body 1 are fixedly connected with second fixed blocks 10, the lower ends of the two second fixed blocks 10 are fixedly connected with sliding rods 13, the lower ends of the two sliding rods 13 are fixedly connected to the lower inner wall of the worm-gear head body 1, a sliding block 18 is sleeved on the circumferential surface of the two sliding rods 13, two first springs 14 are fixedly connected to the upper ends of the sliding block 18, the two first springs 14 are respectively and fixedly connected to the lower ends of the two second fixed blocks 10, and two first springs 14 are respectively sleeved with the circumferential surfaces of the two sliding rods 13, the lower end of the worm gear head body 1 is in threaded connection with a second screw 16, the second screw 16 upwards movably penetrates through the lower inner wall of the worm gear head body 1 and upwards extends, the upper end of a sliding block 18 is fixedly connected with a clamping block 19, the front end of the worm gear head body 1 is provided with an arc-shaped groove, the front end of the arc-shaped groove of the worm gear head body 1 is fixedly connected with a disc 6, the front end of a worm gear 9 is provided with two thread grooves, the two thread grooves are internally and uniformly connected with first screws 11, the front ends of the two first screws 11 are fixedly connected with nuts 7, the front end of the disc 6 is rotatably connected with a pointer 8, the front end of the worm gear head body 1 is fixedly connected with two first fixing blocks 5, and the graduation meters 4 are fixedly connected between the end parts, which the two first fixing blocks 5 are close to each other.

In the embodiment of the present invention, the worm 2 is driven to rotate by rotating the handwheel 3, the worm 2 is rotated to drive the worm wheel 9 to rotate, the worm wheel 9 drives the rotating shaft 12 to rotate, the rotating shaft 12 is rotated to drive the disc 6 to rotate, the disc 6 is rotated to drive the pointer 8 to rotate, when the pointer 8 rotates to the specified scale of the scale 4, the handwheel 3 is stopped to rotate, at this time, the hand screw head 17 is rotated, the hand screw head 17 rotates to drive the second screw 16 to perform the screw motion, the second screw 16 moves upwards, the extrusion slider 18 moves upwards along the slide bar 13, the slider 18 moves upwards to extrude the first spring 14, the second spring 15 is stretched, the slider 18 moves upwards to drive the fixture block 19 to move upwards, the fixture block 19 moves upwards to block the worm wheel 9, the worm wheel 9 is prevented from rotating again, a limiting function is achieved, by arranging the disc 6, the pointer 8 and the scale 4, not only make worm wheel head body 1 possess directional function, the staff of being convenient for controls the block size of the inside valve clack of butterfly valve, the flow size of the control valve of being convenient for, simple structure is convenient for assemble moreover.

Referring to fig. 2, a hand wheel 3 is fixedly connected to the right end of the worm 2, and the cross section of the hand wheel 3 is trapezoidal.

In this embodiment: the worm 2 can be better rotated.

Specifically, the circumferential surface of the hand wheel 3 is engraved with anti-slip threads, which are not shown in the drawings.

In this embodiment: the sliding can be prevented when the hand wheel 3 is rotated.

Specifically, the inner wall of the worm gear head body 1 is provided with a sealing gasket, which is not shown in the figure.

In this embodiment: can prevent the problem of infiltration and appearance debris in the worm wheel head body 1.

Specifically referring to fig. 3, the lower end of the sliding block 18 is fixedly connected with two second springs 15, the lower ends of the two second springs 15 are both fixedly connected to the upper inner wall of the worm gear head body 1, and the two second springs 15 are respectively sleeved on the circumferential surfaces of the two sliding rods 13.

In this embodiment: the provision of the second spring 15 gives a restoring force to the slide 18, which leads to a better return of the slide 18.

Referring to fig. 1 in particular, the lower end of the second screw 16 is fixedly connected with a hand-screwed screw head 17, and the cross section of the hand-screwed screw head 17 is pentagonal.

In this embodiment: the second screw 16 can be screwed better so that it does not slip.

The utility model discloses a theory of operation and use flow: when the device is used, the worm 2 is driven to rotate through rotating the hand wheel 3, the worm 2 rotates to drive the worm wheel 9 to rotate, the worm wheel 9 drives the rotating shaft 12 to rotate, the rotating shaft 12 rotates to drive the disc 6 to rotate, the disc 6 rotates to drive the pointer 8 to rotate, when the pointer 8 rotates to the specified scale of the scale 4, the hand wheel 3 stops rotating, the hand is rotated to screw the screw head 17 at the moment, the hand is rotated to screw the screw head 17 to rotate to drive the second screw 16 to perform threaded motion, the second screw 16 moves upwards, the extrusion sliding block 18 moves upwards along the sliding rod 13, the sliding block 18 moves upwards to extrude the first spring 14, the second spring 15 is stretched, the sliding block 18 moves upwards to drive the clamping block 19 to move upwards, the clamping block 19 moves upwards to clamp the worm wheel 9, the worm wheel 9 is prevented from rotating again, and a limiting effect is achieved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a butterfly valve worm wheel head which characterized in that: the worm gear comprises a worm gear body (1), wherein the worm gear body (1) is of a cavity structure, a rotating shaft (12) is rotatably connected between the front inner wall and the rear inner wall of the worm gear body (1), a worm gear (9) is fixedly connected to the circumferential surface of the rotating shaft (12), a worm (2) is rotatably connected to the left inner wall of the worm gear body (1), the right end of the worm (2) movably penetrates through the right end of the worm gear body (1) rightwards and extends rightwards, the worm (2) is meshed with the worm gear (9), second fixed blocks (10) are fixedly connected to the left inner wall and the right inner wall of the worm gear body (1), sliding rods (13) are fixedly connected to the lower ends of the two second fixed blocks (10), sliding rods (13) are fixedly connected to the lower inner wall of the worm gear body (1), and sliding blocks (18) are sleeved on the circumferential surface of the sliding rods (13), the upper end of the sliding block (18) is fixedly connected with two first springs (14), the upper ends of the two first springs (14) are respectively fixedly connected to the lower ends of two second fixed blocks (10), the two first springs (14) are respectively sleeved on the circumferential surfaces of the two sliding rods (13), the lower end of the worm gear head body (1) is in threaded connection with a second screw rod (16), the second screw rod (16) upwards movably penetrates through the lower inner wall of the worm gear head body (1) and upwards extends, the upper end of the sliding block (18) is fixedly connected with a clamping block (19), the front end of the worm gear head body (1) is provided with an arc-shaped groove, the front end of the arc-shaped groove of the worm gear head body (1) is fixedly connected with a disc (6), the front end of the worm gear (9) is provided with two thread grooves, and the two thread grooves are both internally and threadedly connected with first screw rods (11), the front ends of the two first screw rods (11) are fixedly connected with nuts (7), the front end of the disc (6) is rotatably connected with a pointer (8), the front end of the worm wheel head body (1) is fixedly connected with two first fixing blocks (5), and a dial gauge (4) is fixedly connected between the end parts, close to each other, of the two first fixing blocks (5).

2. The butterfly valve worm gear head of claim 1, wherein: the right end of the worm (2) is fixedly connected with a hand wheel (3), and the section of the hand wheel (3) is trapezoidal.

3. A butterfly valve worm gear head as claimed in claim 2, wherein: the circumference surface of the hand wheel (3) is carved with anti-skidding lines.

4. A butterfly valve worm gear head according to claim 3, characterised in that: the inner wall of the worm gear head body (1) is provided with a sealing gasket.

5. The butterfly valve worm gear head of claim 4, wherein: the lower extreme fixedly connected with two second springs (15) of slider (18), two the equal fixed connection in the last inner wall of worm wheel head body (1) of lower extreme of second spring (15), and two second springs (15) overlap respectively and locate the circumferential surface of two slide bars (13).

6. The butterfly valve worm gear head of claim 5, wherein: the lower extreme fixedly connected with hand screw rod head (17) of second screw rod (16), the section of hand screw rod head (17) is the pentagon.