CN218780779U

CN218780779U - High leakproofness butterfly valve

Info

Publication number: CN218780779U
Application number: CN202222686346.4U
Authority: CN
Inventors: 洪天助
Original assignee: Quanzhou Yihe New Material Technology Co ltd
Current assignee: Quanzhou Yihe New Material Technology Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-03-31
Anticipated expiration: 2032-10-12

Abstract

The utility model discloses a high leakproofness butterfly valve, its technical scheme is: which comprises a valve body, the valve body top is provided with the mount pad, fixedly connected with seal cover in the valve body, the inside toroidal cavity that is provided with of seal cover, seal cover outer wall fixedly connected with trachea, trachea and toroidal cavity intercommunication, trachea one end runs through the valve body and extends to the valve body outside, the seal cover inboard is equipped with the butterfly plate, butterfly plate middle part fixedly connected with valve rod, valve rod and valve body swing joint, the valve body top runs through the mount pad inside and extend to the mount pad top, a high leakproofness butterfly valve beneficial effect is: through setting up annular cavity in with the seal cover to be connected through trachea and the gas injection device on the valve handle, utilize the gas injection device can make the seal cover inflation when the butterfly plate rotates to contact with the seal cover, and then inseparabler with the laminating of butterfly plate edge, and then strengthened sealing performance.

Description

High leakproofness butterfly valve

Technical Field

The utility model relates to a butterfly valve technical field, concretely relates to high leakproofness butterfly valve.

Background

The butterfly valve is a regulating valve with simple structure, can be used for the on-off control of low-pressure pipeline media, and the closing member (valve clack or butterfly plate) of the butterfly valve is a disc and rotates around a valve shaft to achieve opening and closing.

The existing butterfly valve is internally provided with an annular sealing sleeve, and the butterfly plate is sealed when rotating to the edge to contact the sealing sleeve, so that the sealing performance is insufficient.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a high leakproofness butterfly valve is through setting up the ring cavity in with the seal cover to be connected through trachea and the gas injection device on the valve handle, utilize the gas injection device can make the seal cover inflation when the butterfly plate rotates to contact with the seal cover, and then inseparabler with butterfly plate edge laminating, and then strengthened sealing performance, with the inside seal cover that sets up of present butterfly valve of solution, the butterfly plate rotates and realizes sealing when edge contact seal cover, the not enough problem of sealing performance.

In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a high leakproofness butterfly valve, includes the valve body, the valve body top is provided with the mount pad, fixedly connected with seal cover in the valve body, the inside toroidal cavity that is provided with of seal cover, seal cover outer wall fixedly connected with trachea, trachea and toroidal cavity intercommunication, trachea one end runs through the valve body and extends to the valve body outside, the seal cover inboard is equipped with the butterfly plate, butterfly plate middle part fixedly connected with valve rod, valve rod and valve body swing joint, the valve body top runs through the mount pad inside and extend to the mount pad top, valve body top fixedly connected with handle, be provided with the gas injection device on hand, the gas injection device is connected with the trachea.

Preferably, the gas injection device includes the box body, box body and handle fixed connection, the box body is inside to be fixed with a piston section of thick bamboo, piston section of thick bamboo tip and trachea fixed connection, the inside piston that is provided with of piston section of thick bamboo.

Preferably, be provided with drive assembly in the box body, drive assembly includes screw rod, nut seat and guide bar, the guide bar runs through the nut seat and pegs graft with the activity of nut seat, the guide bar both ends all are fixed with the box body inner wall, the screw rod runs through the nut seat and with nut seat threaded connection, the screw rod both ends all with box body swing joint, nut seat one side fixedly connected with push rod, push rod one end and piston fixed connection.

Preferably, one end of the screw rod penetrates through the outside of the box body, and the screw rod is fixedly connected with a screw cap at one end of the outside of the box body.

Preferably, one side of the nut seat is fixedly connected with a limiting rod, and one end of the limiting rod penetrates through the inner wall of the box body and extends to the outside of the box body.

Preferably, the edge of the mounting seat is provided with a plurality of limiting holes which are uniformly distributed.

Preferably, one side of the box body is fixedly connected with an access cover through a screw.

Preferably, the mounting seat is fixedly connected with a limit stop, and the side wall of the limit stop is fixedly connected with a rubber pad.

The embodiment of the utility model provides a have following advantage:

1. the sealing sleeve is internally provided with the annular cavity and is connected with the gas injection device on the valve handle through the gas pipe, when the butterfly plate rotates to be in contact with the sealing sleeve, the sealing sleeve can be expanded by the gas injection device, and then the butterfly plate is tightly attached to the edge of the butterfly plate, so that the sealing performance is enhanced;

2. can also drive the gag lever post when realizing the gas injection through the rotating spiral cap and insert spacing downthehole to this carries on spacingly to the handle, avoids the handle to rotate at will, and is more practical.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic diagram of the positive effect provided by the present invention;

fig. 2 is a schematic diagram of the back effect provided by the present invention;

FIG. 3 is a schematic view of the structure of the box body provided by the present invention;

fig. 4 is a sectional view of the sealing sleeve provided by the present invention;

fig. 5 is an enlarged view of the a-portion structure in fig. 1 according to the present invention.

In the figure: the valve comprises a valve body 1, a mounting seat 2, a sealing sleeve 3, an annular cavity 4, an air pipe 5, a butterfly plate 6, a valve rod 7, a handle 8, a box body 9, a piston cylinder 10, a piston 11, a nut seat 12, a guide rod 13, a push rod 14, a screw cap 15, a limiting rod 16, a limiting hole 17, an access cover 18, a limit stop 19 and a screw rod 20.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. 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 the attached drawings 1-5, the utility model provides a high leakproofness butterfly valve, including valve body 1, valve body 1 top is provided with mount pad 2, fixedly connected with seal cover 3 in valve body 1, seal cover 3 is inside to be provided with annular cavity 4, seal cover 3 outer wall fixedly connected with trachea 5, trachea 5 and annular cavity 4 communicate, trachea 5 one end runs through valve body 1 and extends to the valve body 1 outside, the inboard of seal cover 3 is equipped with butterfly plate 6, butterfly plate 6 middle part fixedly connected with valve rod 7, valve rod 7 and valve body 1 swing joint, valve body 1 top runs through mount pad 2 inside and extends to mount pad 2 top, valve body 1 top fixedly connected with handle 8, be provided with the gas injection device on handle 8, the gas injection device is connected with trachea 5;

in this embodiment, through setting up annular cavity 4 in the seal cover 3 to be connected through the gas injection device on trachea 5 and the valve handle 8, utilize the gas injection device can make seal cover 3 inflation when butterfly plate 6 rotates to 3 contacts with the seal cover, and then inseparabler with the edge laminating of butterfly plate 6, and then strengthened sealing performance.

Wherein, in order to realize the purpose of manual gas injection, this device adopts following technical scheme to realize: the gas injection device comprises a box body 9, the box body 9 is fixedly connected with a handle 8, a piston cylinder 10 is fixed inside the box body 9, the end part of the piston cylinder 10 is fixedly connected with a gas pipe 5, a piston 11 is arranged inside the piston cylinder 10, a driving assembly is arranged inside the box body 9, the driving assembly comprises a screw rod 20, a nut seat 12 and a guide rod 13, the guide rod 13 penetrates through the nut seat 12 and is movably inserted with the nut seat 12, two ends of the guide rod 13 are both fixed with the inner wall of the box body 9, the screw rod 20 penetrates through the nut seat 12 and is in threaded connection with the nut seat 12, two ends of the screw rod 20 are both movably connected with the box body 9, one side of the nut seat 12 is fixedly connected with a push rod 14, one end of the push rod 14 is fixedly connected with the piston 11, one end of the screw rod 20 penetrates through the outside the box body 9, and one end of the screw rod 20, which is positioned outside the box body 9, is fixedly connected with a screw cap 15;

wherein, in order to realize 8 spacing purposes to the handle, this device adopts following technical scheme to realize: one side of the nut seat 12 is also fixedly connected with a limiting rod 16, one end of the limiting rod 16 penetrates through the inner wall of the box body 9 and extends to the outside of the box body 9, and a plurality of limiting holes 17 which are uniformly distributed are formed in the edge of the mounting seat 2;

wherein, in order to realize the convenient purpose of overhauing 9 insides of box body, this device adopts following technical scheme to realize: one side of the box body 9 is fixedly connected with an access cover 18 through a screw;

wherein, in order to realize the purpose of the rotation angle limit of the handle 8, the device adopts the following technical scheme: fixedly connected with limit stop 19 on mount pad 2, limit stop 19 lateral wall fixedly connected with rubber pad, the rubber pad can provide the cushioning effect when handle 8 contacts limit stop 19.

The utility model discloses a use as follows: use the utility model discloses the time, it can drive valve rod 7 and butterfly plate 6 and rotate to rotate handle 8, until butterfly plate 6 edge contact seal cover 3, later the rotating cap 15, cap 15 can drive screw rod 20 and rotate soon, and then drive nut seat 12 and remove along screw rod 20, can drive push rod 14 and gag lever post 16 simultaneous movement when nut seat 12 removes, can promote piston 11 when push rod 14 removes, inject annular cavity 4 with the air in the piston cylinder 10 through trachea 5, it is inseparabler with butterfly plate 6 edge after 3 inner wall expansions of seal cover this moment, with this improvement sealing performance, and can insert spacing downthehole 17 when gag lever post 16 removes, can fix a position handle 8, avoid handle 8 to rotate at will.

The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solutions described above. Therefore, any simple modifications or equivalent replacements made according to the technical solution of the present invention belong to the scope of protection claimed by the present invention as far as possible.

Claims

1. The utility model provides a high leakproofness butterfly valve, includes valve body (1), its characterized in that: the improved air injection valve is characterized in that a mounting seat (2) is arranged at the top of the valve body (1), a sealing sleeve (3) is fixedly connected in the valve body (1), an annular cavity (4) is arranged inside the sealing sleeve (3), an air pipe (5) is fixedly connected with the outer wall of the sealing sleeve (3), the air pipe (5) is communicated with the annular cavity (4), one end of the air pipe (5) penetrates through the valve body (1) and extends to the outside of the valve body (1), a butterfly plate (6) is arranged on the inner side of the sealing sleeve (3), a valve rod (7) is fixedly connected with the middle of the butterfly plate (6), the valve rod (7) is movably connected with the valve body (1), the top end of the valve body (1) penetrates through the inside of the mounting seat (2) and extends to the top of the mounting seat (2), a handle (8) is fixedly connected with the top of the valve body (1), and an air injection device is arranged on the handle (8) and connected with the air pipe (5).

2. The butterfly valve with high sealing performance according to claim 1, wherein: the gas injection device includes box body (9), box body (9) and handle (8) fixed connection, box body (9) inside is fixed with piston cylinder (10), piston cylinder (10) tip and trachea (5) fixed connection, piston cylinder (10) inside is provided with piston (11).

3. The butterfly valve with high sealing performance according to claim 2, wherein: be provided with drive assembly in box body (9), drive assembly includes screw rod (20), nut seat (12) and guide bar (13), guide bar (13) run through nut seat (12) and peg graft with nut seat (12) activity, guide bar (13) both ends all with box body (9) inner wall fixed, screw rod (20) run through nut seat (12) and with nut seat (12) threaded connection, screw rod (20) both ends all with box body (9) swing joint, nut seat (12) one side fixedly connected with push rod (14), push rod (14) one end and piston (11) fixed connection.

4. A high-tightness butterfly valve according to claim 3, characterized in that: screw rod (20) one end is run through to box body (9) outside, screw rod (20) are located box body (9) outside one end fixedly connected with spiral cap (15).

5. A high-sealability butterfly valve according to claim 3, wherein: and one side of the nut seat (12) is also fixedly connected with a limiting rod (16), and one end of the limiting rod (16) penetrates through the inner wall of the box body (9) and extends to the outside of the box body (9).

6. The butterfly valve with high sealing performance according to claim 5, wherein: the edge of the mounting seat (2) is provided with a plurality of spacing holes (17) which are uniformly distributed.

7. The butterfly valve with high sealing performance according to claim 2, wherein: one side of the box body (9) is fixedly connected with an access cover (18) through a screw.

8. The butterfly valve with high sealing performance according to claim 1, wherein: the mounting seat (2) is fixedly connected with a limit stop block (19), and the side wall of the limit stop block (19) is fixedly connected with a rubber pad.