CN209781700U

CN209781700U - Multi-spring cooperative compression type efficient sealing butterfly valve

Info

Publication number: CN209781700U
Application number: CN201920588527.9U
Authority: CN
Inventors: 郑亮
Original assignee: Wenzhou Taifu Valve Co Ltd
Current assignee: Wenzhou Taifu Valve Co Ltd
Priority date: 2019-04-27
Filing date: 2019-04-27
Publication date: 2019-12-13
Anticipated expiration: 2029-04-27

Abstract

The utility model discloses the innovation provides a many springs compress tightly high-efficient sealed butterfly valve in coordination. The multi-spring cooperative compression type efficient sealing butterfly valve comprises a valve body and a hand wheel, wherein a valve rod and a disc plate are arranged in the valve body, the disc plate is connected onto the valve rod, the valve rod penetrates through the valve body to be connected with an external hand wheel in a transmission mode, a valve seat is arranged between the valve body and the disc plate, a sealing gland and a disc spring pad are arranged in the valve seat, and a contact surface between the valve seat and the disc plate is a sealing surface. This kind of high-efficient sealed butterfly valve of formula that compresses tightly in coordination of multiple spring, 4 butterfly spring pads synergism, the butterfly spring pad lasts to be pressed on the sealed gland for the sealed of contact surface is maintained in a reasonable interference range all the time, greatly reduced because of the frequent or difference in temperature change of valve switch leads to the risk of leaking.

Description

Multi-spring cooperative compression type efficient sealing butterfly valve

Technical Field

The utility model relates to a governing valve field, concretely relates to high-efficient sealed butterfly valve of formula that compresses tightly in coordination of multi-spring.

Background

The butterfly valve is a valve which uses a disc-shaped butterfly plate as an opening and closing piece and realizes opening, closing and adjustment of a fluid passage by rotating around a valve shaft. The butterfly valve is used as a component for realizing the on-off and flow control of a pipeline system and is widely applied to the fields of petroleum, chemical industry, water and electricity and the like. The valve is divided into a pneumatic butterfly valve, an electric butterfly valve and a manual butterfly valve according to a driving mode. The sealing form of the butterfly valve mostly adopts a sealing structure, and the sealing material mainly comprises rubber, polytetrafluoroethylene and the like, so that the butterfly valve is not suitable for working conditions such as high temperature resistance, high pressure resistance, corrosion resistance or abrasion resistance due to the limitation of structural characteristics. The sealing ring of the butterfly valve is easy to be corroded and eroded by media in the pipeline to be damaged, and particularly, the sealing ring of the soft sealing butterfly valve is easy to age and crack and delaminate when being used for a long time, so that the butterfly valve leaks and even seriously influences the production work.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model discloses the innovation provides a many springs compress tightly high-efficient sealed butterfly valve in coordination.

The multi-spring cooperative compression type efficient sealing butterfly valve comprises a valve body and a hand wheel, wherein a valve rod and a disc plate are arranged in the valve body, the disc plate is connected onto the valve rod, the valve rod penetrates through the valve body to be connected with an external hand wheel in a transmission mode, a valve seat is arranged between the valve body and the disc plate, a sealing gland and a disc spring pad are arranged in the valve seat, and a contact surface between the valve seat and the disc plate is a sealing surface.

The valve seat is U-shaped, be equipped with the annular in the U type valve seat and hold the chamber, the valve body holds the intracavity with gland tight fit installs at the annular, the annular holds and forms a spring chamber between the gland in the intracavity and the valve body, the belleville spring pad is located the spring chamber.

The upper end of the butterfly spring cushion is pressed on the valve body in a propping mode, the lower end of the butterfly spring cushion is pressed on the sealing gland in a propping mode, the sealing gland is of an inverted L shape, and an O-shaped ring is arranged between the sealing gland and the valve body.

The inner wall of the valve seat is provided with a protruding thorn which penetrates into the valve body in the valve seat.

The hand wheel includes inner circle and outer lane, inner circle center department is equipped with the screw, it holds the hole to be equipped with a plurality of between the inner circle of hand wheel and the outer lane, it is the bowl form to hold the hole, it is the arc angle to hold four angles in hole, the edge of holding the hole has the protection muscle, the protection muscle has two initiating terminals, two initiating terminals are located the outer lane.

The number of the holding holes is 5, ribs for connecting the inner ring and the outer ring are arranged between every two holding holes, and holding balls are arranged on the outer sides of the outer rings corresponding to the ribs.

The inner ring is deviated to one side relative to the outer ring.

The edge of the screw hole on the inner ring is provided with a screw hole bulge.

According to the utility model provides a butterfly valve, 4 butterfly spring pad synergism, the butterfly spring pad lasts to press and covers at sealed gland for the sealed of contact surface is maintained throughout in a reasonable interference within range, greatly reduced because of the frequent or difference in temperature change risk that leads to leaking of valve switch.

Drawings

Fig. 1 is a front view of the present invention as a whole.

Fig. 2 is a sectional view of the whole of the present invention.

Fig. 3 is a structural view of a in fig. 2.

Fig. 4 is a structural diagram of the hand wheel of the present invention.

Fig. 5 is a side view of the hand wheel of the present invention.

Detailed Description

As shown in figure 1-2, the multi-spring cooperation compression type high-efficiency sealing butterfly valve comprises a valve body 1 and a hand wheel 6, wherein the valve body 1 comprises a valve rod 2 and a disc plate 3, the disc plate 3 is connected on the valve rod 2, the valve rod 2 penetrates through the valve body 1 and is in transmission connection with an external hand wheel 6, the valve rod 2 is driven by a transmission device to move by rotating the hand wheel 6, the valve rod 2 drives the disc plate 3 to rotate, so that the opening, closing and throttling of the butterfly valve are realized, a valve seat 4 is arranged between the valve body 1 and the disc plate 3, a sealing gland 52 and a disc spring pad 51 are arranged in the valve seat 4, the contact surface between the valve seat 4 and the disc plate 3 is a sealing surface 54, the valve seat 4 is made of sealing material and has good sealing performance, the valve seat 4 is pressed by the downward pressing force of the disc spring pad 51 on the sealing gland 52, so that the valve seat 4 is in closer contact with, the upper and lower sealing performance of the valve seat 4 and the disc plate 3 is improved.

As shown in fig. 3, in order to set the valve body 1 and the built-in gland 52 together, the valve seat 4 is U-shaped, an annular accommodating cavity 5 is arranged in the U-shaped valve seat 4, the valve body 4 and the gland 52 are tightly fitted in the annular accommodating cavity 5, a spring cavity is formed between the gland 52 in the annular accommodating cavity 5 and the valve body 1, and the belleville spring washer 51 is located in the spring cavity.

Because the sealing gland 52 needs to be pressed downwards, the upper end of the butterfly spring gasket 51 is pressed against the valve body 1, the lower end of the butterfly spring gasket is pressed against the sealing gland 52, the sealing gland 52 is in an inverted L shape, the O-shaped ring 53 is arranged between the sealing gland 52 and the valve body 1, when the butterfly spring gasket 51 applies downward force to the sealing gland 52, the sealing gland 52 can press the O-shaped ring 53 downwards, the O-shaped ring 53 is pressed to be flat, and therefore the sealing effect is better.

In order to stably arrange the valve body 1 in the valve seat 4, the inner wall of the valve seat 4 is provided with the protruding thorns 55, the protruding thorns 55 penetrate into the valve body 1 in the valve seat 4, and the protruding thorns 55 mainly play a role in fixing the valve body 1 and the valve seat 4.

As shown in fig. 4-5, the hand wheel 6 includes an inner ring 61 and an outer ring 62, a screw hole 18 is provided at the center of the inner ring 61, a plurality of holding holes 15 are provided between the inner ring 61 and the outer ring 62 of the hand wheel 6, in order to reduce the damage of the hand wheel 6 to the hands when a worker extends into the holding holes 15 to hold the hand wheel 6 to work, and improve the comfort, the holding holes 15 of the hand wheel 6 are set to be bowl-shaped, four corners of the holding holes 15 are arc angles 20, fingers are attached to the arc angles 20 at the inner side of the holding holes 15, so as to reduce the damage of the edges to the finger pressure, the edge of the holding holes 15 is provided with a protection rib 19, the protection rib 19 is provided with two start ends 21, the two start ends 21 are located on the outer ring 62, a certain distance is provided between the two start ends 21 of the protection rib 19, when the fingers are held in the holding holes 15, the inner sides of the fingers are attached to the distance between the two start ends 21, therefore, the pressure of the hand wheel 6 can be reduced when the fingers exert force, and the comfort can be improved.

In order to prevent the hands of a worker from slipping when the worker tightens the valve, a rib 16 connecting the inner ring 61 and the outer ring 62 is arranged between each holding hole 15, and a holding ball 17 is arranged on the outer side of the outer ring 62 corresponding to the rib 16.

In order to save labor for workers, the inner ring 61 is offset to one side relative to the outer ring 62, and the force applied by the workers can be reduced because the inner ring 61 and the outer ring 62 of the hand wheel 6 are provided with a height difference.

The edge of the screw hole 18 on the inner ring 61 is provided with a screw hole bulge 22, so that a worker can sleeve the bulge surface on the valve to rotate the hand wheel, the contact surface of the screw hole 18 and the valve is increased, the force applied by the worker can be smaller, and the labor can be saved for the worker.

Claims

1. The utility model provides a high-efficient butterfly valve that seals of formula that compresses tightly in coordination of multi-spring, includes valve body (1) and hand wheel (6), its characterized in that: valve rod (2) and dish board (3) are drawn together in the valve body (1), dish board (3) are connected on valve rod (2), valve rod (2) pass valve body (1) and are connected with outside hand wheel (6) transmission, be equipped with disk seat (4) between valve body (1) and dish board (3), be equipped with gland (52) and belleville spring pad (51) in disk seat (4), the contact surface between disk seat (4) and dish board (3) is sealed face (54).

2. The multi-spring cooperative compression type efficient sealing butterfly valve according to claim 1, wherein: the valve seat (4) is U-shaped, be equipped with the annular in the U type valve seat (4) and hold chamber (5), valve body (1) and gland (52) tight fit are installed in the annular holds chamber (5), form a spring chamber between gland (52) in the annular holds chamber (5) and valve body (1), belleville spring pad (51) are located the spring chamber.

3. The multi-spring cooperative compression type efficient sealing butterfly valve according to claim 2, wherein: the upper end of the butterfly spring pad (51) is pressed against the valve body (1), the lower end of the butterfly spring pad is pressed against the sealing gland (52), the sealing gland (52) is in an inverted L shape, and an O-shaped ring (53) is arranged between the sealing gland (52) and the valve body (1).

4. The multi-spring cooperative compression type efficient sealing butterfly valve according to claim 2, wherein: the inner wall of the valve seat (4) is provided with a protruding thorn (55), and the protruding thorn (55) pierces the valve body (1) in the valve seat (4).

5. The multi-spring cooperative compression type efficient sealing butterfly valve according to claim 1, wherein: hand wheel (6) include inner circle (61) and outer lane (62), inner circle (61) center department is equipped with screw (18), it holds hole (15) to be equipped with a plurality of between inner circle (61) of hand wheel (6) and outer lane (62), it is the bowl form to hold hole (15), it is arc angle (20) to hold four angles in hole (15), the edge of holding hole (15) has protection muscle (19), protection muscle (19) have two initiating terminals (21), two initiating terminals (21) are located outer lane (62).

6. The multi-spring co-operating compression type efficient sealing butterfly valve according to claim 5, wherein: the number of the holding holes (15) is 5, ribs (16) for connecting the inner ring (61) and the outer ring (62) are arranged between the holding holes (15), and holding balls (17) are arranged on the outer sides of the outer rings (62) corresponding to the ribs (16).

7. The multi-spring co-operating compression type efficient sealing butterfly valve according to claim 5, wherein: the inner ring (61) is offset to one side with respect to the outer ring (62).

8. The multi-spring co-operating compression type efficient sealing butterfly valve according to claim 5, wherein: the edge of the screw hole (18) on the inner ring (61) is provided with a screw hole bulge (22).