CN209892757U

CN209892757U - Novel butt-clamping butterfly valve

Info

Publication number: CN209892757U
Application number: CN201920119378.1U
Authority: CN
Inventors: 谈军; 蔡灵杰; 黄永涛; 谈仁明
Original assignee: Wuxi Manlu Valve Co Ltd
Current assignee: Wuxi Manlu Valve Co Ltd
Priority date: 2019-01-24
Filing date: 2019-01-24
Publication date: 2020-01-03
Anticipated expiration: 2029-01-24

Abstract

The utility model discloses a novel butt clamp butterfly valve, include valve body, valve plate sealing washer, valve rod, base, go up connecting pipe, worm wheel head and hand wheel, the both sides of valve plate are equallyd divide from inside to outside and do not are provided with and aerify layer and planking, the outer edge of valve plate and planking links to each other through aerifing rubber, valve plate, outer planking and aerifing rubber formation aerify the layer, the valve rod is hollow structure and inside and being provided with the gas tube, the air inlet of gas tube extends valve rod and last connecting pipe, the bottom of gas tube is provided with equal trachea, equal tracheal both ends are worn out the valve rod and are being linked together two respectively and aerify the layer and be used for aerifing. The utility model discloses a setting on the layer of aerifing and the elastic expansion function of rubber self is aerifyd in the utilization, can utilize the mode of aerifing through the weeping problem that the effectual solution of aerifing rubber appears because the space to guaranteed to last, stable result of use to pressing from both sides the butterfly valve, possessed fabulous market perspective.

Description

Novel butt-clamping butterfly valve

Technical Field

The utility model relates to a butterfly valve, concretely relates to novel butt clamp butterfly valve.

Background

The butt clamp butterfly valve is through rotating the hand wheel for the rotation of valve plate in the valve body, thereby realize the switch of butterfly valve, but current butt clamp butterfly valve is when closed state, the valve plate is laminated with the valve plate sealing washer in the valve body through the lateral wall, utilize the valve plate sealing washer to realize sealed, reach the effect that prevents the fluid medium and pass through, in the middle of the actual use, although the valve plate sealing washer possesses certain elasticity of stretching out and drawing back, the live time is long, still can appear the space between valve plate and the valve plate sealing washer, the weeping condition appears, thereby seriously influenced the result of use of butt clamp butterfly valve, it is more distressing that, even the staff has found the weeping condition, also do not have better method to maintain and deal with, unless change valve plate sealing washer whole, this not only cost input is great, and also difficult to realize from dismantling and installing.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the liquid leakage condition existing in the prior art, a novel butt-clamping butterfly valve capable of guaranteeing continuous and stable high sealing effect is provided.

The technical scheme is as follows: in order to realize the above-mentioned purpose, the utility model provides a novel to pressing from both sides butterfly valve, including valve body, valve plate sealing washer, valve rod, base, last connecting pipe, worm wheel head and hand wheel, the both sides of valve plate are equallyd divide from inside to outside and do not are provided with and aerify layer and planking layer, the outer edge of valve plate and planking layer links to each other through aerifing rubber, valve plate, planking layer and aerifing rubber form and aerify the layer, the valve rod is hollow structure and inside and is provided with the gas tube, valve rod and last connecting pipe are extended to the air inlet of gas tube, the bottom of gas tube is provided with the gas tube of equaling, the valve rod is being linked together respectively and is used.

The design principle of the utility model is that: through the setting of aerifing the layer and the flexible function of elasticity that the rubber self was aerifyd in the utilization, in case the contact of the rubber of aerifing the layer surface and valve plate sealing washer has appeared the space and has appeared the weeping condition, the staff accessible is aerifyd the layer, make and aerify rubber expand, it can fill the space between its and the valve plate sealing washer automatically at the in-process of expansion to aerify rubber, thereby high leakproofness between gas filled rubber part and the valve plate sealing washer has been ensured, even there is certain space in valve plate and planking layer and valve plate sealing washer like this, owing to aerify the existence of rubber, the weeping condition can not appear yet.

Furthermore, a plurality of reinforcing ribs are arranged between the valve plate and the outer plate layer, so that the connection strength between the valve plate and the outer plate layer is improved.

Furthermore, the air inlet of the inflation tube is provided with a sealing plug to prevent the inflation tube from leaking air.

Further, the joint that lies in valve body and valve rod on the base is provided with the bottom sealing washer, the joint that lies in valve body and valve rod in going up the connecting tube is provided with the top sealing washer, ensures the leakproofness between valve body and the valve rod.

Has the advantages that: compared with the prior art, the utility model, through the setting of aerifing the layer and the flexible function of elasticity that the rubber self was aerifyd in the utilization, can utilize the effectual solution of inflatable mode through aerifing rubber because the weeping problem that the space appears to guaranteed to press from both sides butterfly valve and continued, stable result of use, possessed fabulous market perspective.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a plan sectional view of the valve body in a closed state;

FIG. 3 is a schematic view of the structural connection between the valve plate and the gas-filled tube.

Detailed Description

The invention will be further elucidated with reference to the drawings and the specific embodiments.

As shown in figures 1-3, the utility model provides a novel butt-clamping butterfly valve, which comprises a valve body 1, a valve plate 4, a valve plate sealing ring 2, a valve rod 3, a base 5, an upper connecting pipe 6, a worm gear 7 and a hand wheel 71, wherein both sides of the valve plate 4 are respectively provided with an inflation layer 9 and an outer plate layer 41 from inside to outside, the outer edges of the valve plate 4 and the outer plate layer 41 are connected through inflation rubber 42, the valve plate 4, the outer plate layer 41 and the inflation rubber 42 form the inflation layer 9, the valve rod 3 is of a hollow structure and is internally provided with an inflation pipe 8, the air inlet of the inflation pipe 8 extends out of the valve rod 3 and the upper connecting pipe 6, the bottom of the inflation pipe 8 is provided with an air equalizing pipe 82, both ends of the air equalizing pipe 82 penetrate out of the valve rod 3 and are respectively communicated with the two inflation layers 9 for inflation, a plurality of reinforcing ribs 43 are arranged between the valve plate 4 and the outer plate layer 41, a top end sealing ring 61 is arranged at the joint of the valve body 1 and the valve rod 3 in the upper connecting pipe 6.

As shown in fig. 2 and 3, when the opposite clamping butterfly valve is in a closed state, when the valve plate 4, the two outer plate layers 41 and the two air-filled layers 9 have gaps with the valve plate sealing ring 2, a liquid leakage situation occurs, after the staff finds that the sealing plug 81 is pulled out, the inflation device is used for inflating through the air inlet of the inflation tube 8, the supplemented air enters the air equalizing tube 82 and then respectively enters the inflation cavities of the two inflation layers 9, because the air pressure is increased, the inflation rubber 42 begins to expand, the inflation rubber 42 can automatically fill the gap between the inflation rubber 42 and the valve plate sealing ring 2, a worker observes the real-time liquid leakage condition, once the leakage condition disappears, the worker stops filling the sealing plug 81 after stopping filling air, and at the moment, because the filling rubber 42 and the valve plate sealing ring 2 maintain excellent sealing performance, the gap between the valve plate 4 and the outer plate layer 41 and the valve plate packing 2 does not cause leakage.

Claims

1. The utility model provides a novel butt clamp butterfly valve, includes valve body (1), valve plate (4), valve plate sealing washer (2), valve rod (3), base (5), goes up connecting pipe (6), worm gear head (7) and hand wheel (71), its characterized in that: the both sides of valve plate (4) are equallyd divide from inside to outside and are provided with respectively aerify layer (9) and planking layer (41), the outer edge of valve plate (4) and outer planking layer (41) links to each other through inflating rubber (42), valve plate (4), outer planking layer (41) and inflating rubber (42) and forming aerify layer (9), valve rod (3) are hollow structure and inside and are provided with gas tube (8), the air inlet of gas tube (8) extends valve rod (3) and upper junction pipe (6), the bottom of gas tube (8) is provided with equal trachea (82), the both ends of equal trachea (82 are worn out valve rod (3) and are being linked together two respectively and aerify layer (9) and be used for aerifing.

2. The novel butt-clamping butterfly valve according to claim 1, characterized in that: a plurality of reinforcing ribs (43) are arranged between the valve plate (4) and the outer plate layer (41).

3. The novel butt-clamping butterfly valve according to claim 1, characterized in that: and a sealing plug (81) is arranged at the air inlet of the inflation tube (8).

4. The novel butt-clamping butterfly valve according to claim 1, characterized in that: and a bottom end sealing ring (51) is arranged at the joint of the valve body (1) and the valve rod (3) on the base (5).

5. The novel butt-clamping butterfly valve according to claim 1, characterized in that: and a top end sealing ring (61) is arranged at the joint of the valve body (1) and the valve rod (3) in the upper connecting pipe (6).