CN217481989U

CN217481989U - Pneumatic expansion butterfly valve

Info

Publication number: CN217481989U
Application number: CN202220705123.5U
Authority: CN
Inventors: 董丽丽
Original assignee: Boruite Shanghai Fluid Technology Co ltd
Current assignee: Shanghai Biruite Valve Group Co.,Ltd.
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-09-23
Anticipated expiration: 2032-03-29

Abstract

The utility model discloses a pneumatic expansion butterfly valve, which comprises a valve body, wherein an annular groove is arranged in the middle part of the valve body, an annular air bag is arranged in the annular groove, an upper support is arranged on the upper side of the valve body, an actuator is arranged at the upper end of the upper support, a valve rod is rotatably arranged in the upper support, a valve clack is arranged in the middle part of the valve body, the valve rod is fixedly connected with the valve clack, an inner positioning groove is arranged on the lower side of the annular groove, a lower support plate is slidably arranged in the inner positioning groove, a limiting part is arranged on one side of the lower support plate, the lower part of the valve clack is clamped between the limiting parts, and one end of the lower support plate is connected with an electric push rod in a transmission way, the lower support plate and the limiting part are arranged in the inner positioning groove, and the lower support plate and the limiting part are driven by the electric push rod to lift and adjust, thereby the lower side of the valve body can be clamped and the stability of the valve clack when being closed can be improved, thereby being beneficial to improving the sealing performance of the valve clack.

Description

Pneumatic expansion butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field specifically is a pneumatic inflation formula butterfly valve.

Background

A butterfly valve, also called a flap valve, is a regulating valve with simple structure, and can be used for the on-off control of low-pressure pipeline media, namely a valve which is opened and closed by rotating around a valve shaft, wherein a closing member (a valve clack or a butterfly plate) is a disk. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The pipe mainly plays a role in cutting off and throttling. The butterfly valve opening and closing piece is a disc-shaped butterfly plate and rotates around the axis of the butterfly plate in the valve body, so that the opening and closing or adjusting purpose is achieved.

The novel pneumatic expansion butterfly valve with application number CN201922136941.9 among the prior art, stability when the inside valve clack of its valve body is closed is relatively poor to stability when influence valve clack is closed makes the leakproofness that the butterfly valve used relatively poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic inflation formula butterfly valve to stability when solving the inside valve clack of valve body among the prior art closed is relatively poor, thereby stability when influencing the valve clack closure, makes the relatively poor problem of leakproofness that the butterfly valve used.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pneumatic inflation formula butterfly valve, includes the valve body, the annular groove has been seted up at the middle part in the valve body, annular groove internally mounted has the annular gasbag, the upper bracket is installed to the valve body upside, the executor is installed to the upper bracket upper end, the inside rotatory valve rod of installing of upper bracket, the mid-mounting has the valve clack in the valve body, and valve rod and valve clack fixed connection, interior constant head tank is installed to the annular groove downside, interior constant head tank inside slidable mounting has down the extension board, the locating part is installed to lower extension board one side, and valve clack lower part card establishes between the locating part, extension board one end transmission is connected with electric putter down, electric putter installs in the mounting groove in the valve body outside.

Furthermore, connecting flanges are installed at two ends of the valve body, and positioning holes are formed in the connecting flanges.

Furthermore, one end of the valve rod is clamped in the middle of the outer side of the valve clack, and the valve clack and the valve rod are fixedly connected through screws.

Furthermore, a limiting groove is formed between the limiting parts, and the two groups of limiting parts are symmetrically arranged around the lower support plate.

Further, the sealing washer is installed in the valve clack outside, and sealing washer parallel arrangement has two sets ofly.

Furthermore, the lower support plate is arranged to be an arc-shaped plate, and the width of the limiting groove is larger than the thickness of the valve clack.

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

1. the utility model discloses a constant head tank in the annular groove downside is installed, and interior positioning groove is provided with down extension board and locating part, and extension board one end transmission is connected with electric putter down for extension board and locating part lift adjustment under the electric putter drive, thereby can carry out the spacing processing of joint to the valve clack downside, stability when being favorable to improving the valve clack closure, thereby be favorable to improving the leakproofness that the butterfly valve used.

2. The utility model discloses and seted up the annular groove through the middle part in the valve body, annular groove internally mounted has the annular airbag, and the sealing washer is installed in the valve clack outside, is convenient for improve the closed leakproofness that makes of valve clack, and sealing performance is stronger.

3. The utility model discloses a be formed with the spacing groove between the locating part, and the locating part is provided with two sets ofly about the lower bolster symmetry for can carry out the spacing processing of joint to valve clack both ends downside, rock when preventing that the valve clack from closing.

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 principles of the invention. In the drawings:

FIG. 1 is a front view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the limiting member of the present invention when the limiting member is engaged with the limiting valve flap;

fig. 3 is a schematic diagram of the lower support structure of the present invention.

In the figure: 1. a valve body; 2. an upper support; 3. a valve stem; 4. an annular groove; 5. an annular air bag; 6. a valve flap; 7. a connecting flange; 8. positioning holes; 9. an inner positioning groove; 10. a lower support plate; 11. an electric push rod; 12. mounting grooves; 13. a limiting member; 14. a limiting groove; 15. a seal ring; 16. and an actuator.

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.

Referring to fig. 1, 2 and 3, in an embodiment of the present invention, a pneumatic expansion butterfly valve includes a valve body 1, an annular groove 4 is formed in the middle of the valve body 1, an annular air bag 5 is installed inside the annular groove 4, an air inlet and outlet is connected to one side of the annular air bag 5 for improving the sealing performance of the valve flap 6, the sealing performance is strong, an upper support 2 is installed on the upper side of the valve body 1, an actuator 16 is installed on the upper end of the upper support 2, a valve rod 3 is rotatably installed inside the upper support 2, a valve flap 6 is installed in the middle of the valve body 1, the valve rod 3 is fixedly connected to the valve flap 6, an inner positioning slot 9 is installed on the lower side of the annular groove 4, a lower support plate 10 is slidably installed inside the inner positioning slot 9, a limiting member 13 is installed on one side of the lower support plate 10, the lower portion of the valve flap 6 is clamped between the limiting members 13, an electric push rod 11 is connected to one end of the lower support plate 10 in a transmission manner, the electric push rod 11 is installed in an installation slot 12 outside the valve body 1, make through electric putter 11 drive down extension board 10 and locating part 13 lift adjustment to can carry out the spacing processing of joint to valve clack 6 downside both ends, be favorable to improving the stability when valve clack 6 is closed, thereby be favorable to improving the leakproofness of the closed use of valve clack 6.

Preferably, connecting flanges 7 are installed at the two ends of the valve body 1, and positioning holes 8 are formed in the connecting flanges 7, so that the two ends of the valve body 1 can be conveniently installed and fixed.

Preferably, 3 one end card of valve rod is established in 6 outside middle parts of valve clack, and is fixed through the screw connection between valve clack 6 and the valve rod 3, is convenient for install fixed processing to valve rod 3 and valve clack 6.

Preferably, a limiting groove 14 is formed between the limiting pieces 13, and two groups of limiting pieces 13 are symmetrically arranged about the lower support plate 10, so that clamping limiting processing can be performed on two ends of the lower side of the valve body 1, and the stability of the valve body 1 during closing can be improved.

Preferably, the sealing rings 15 are installed on the outer side of the valve clack 6, and the two groups of sealing rings 15 are arranged in parallel, so that the sealing performance of the valve clack 6 during closing is further improved.

Preferably, the lower support plate 10 is an arc-shaped plate, and the width of the limiting groove 14 is larger than the thickness of the valve flap 6, so that the lower end of the valve flap 6 is clamped in the limiting groove 14.

The utility model discloses a theory of operation and use flow: interior constant head tank 9 of side-mounting has through the annular groove 4 in the valve body 1, and be provided with down extension board 10 and locating part 13 in the interior constant head tank 9, extension board 10 one end transmission is connected with electric putter 11 down, make extension board 10 and locating part 13 lift adjustment under the 11 drives of electric putter, thereby can carry out the spacing processing of joint to 6 downside both ends of valve clack, be favorable to improving the stability when valve clack 6 is closed, thereby be favorable to improving the leakproofness of 6 closed uses of valve clack.

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 above, 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. A pneumatic expansion butterfly valve, includes valve body (1), its characterized in that: annular groove (4) have been seted up at the middle part in valve body (1), annular groove (4) internally mounted has annular gasbag (5), upper bracket (2) are installed to valve body (1) upside, executor (16) are installed to upper bracket (2) upper end, upper bracket (2) internal rotation installs valve rod (3), mid-mounting has valve clack (6) in valve body (1), and valve rod (3) and valve clack (6) fixed connection, constant head tank (9) in annular groove (4) downside is installed, interior constant head tank (9) internal sliding installs down extension board (10), locating part (13) are installed to extension board (10) one side down, and valve clack (6) lower part card establishes between locating part (13), extension board (10) one end transmission is connected with electric putter (11) down.

2. A pneumatic expansion butterfly valve according to claim 1, characterized in that: connecting flanges (7) are installed at two ends of the valve body (1), and positioning holes (8) are formed in the connecting flanges (7).

3. The pneumatic expansion butterfly valve according to claim 1, characterized in that: one end of the valve rod (3) is clamped in the middle of the outer side of the valve clack (6), and the valve clack (6) and the valve rod (3) are fixedly connected through screws.

4. A pneumatic expansion butterfly valve according to claim 1, characterized in that: a limiting groove (14) is formed between the limiting pieces (13), and two groups of limiting pieces (13) are symmetrically arranged relative to the lower support plate (10).

5. The pneumatic expansion butterfly valve according to claim 1, characterized in that: and sealing rings (15) are installed on the outer side of the valve clack (6), and two groups of sealing rings (15) are arranged in parallel.

6. A pneumatic expansion butterfly valve according to claim 1, characterized in that: the lower support plate (10) is arranged to be an arc-shaped plate, and the width of the limiting groove (14) is larger than the thickness of the valve clack (6).