CN213451753U

CN213451753U - Pneumatic butterfly valve with high sealing performance

Info

Publication number: CN213451753U
Application number: CN202022489065.0U
Authority: CN
Inventors: 张丹; 张璐; 刘春义
Original assignee: Tianjin Liwei Valve Co ltd
Current assignee: Tianjin Liwei Valve Co ltd
Priority date: 2020-11-02
Filing date: 2020-11-02
Publication date: 2021-06-15
Anticipated expiration: 2030-11-02

Abstract

The utility model discloses a pneumatic butterfly valve of high leakproofness. The improved pneumatic actuator comprises an outer shell, the shell top is connected with pneumatic actuator, pneumatic actuator bottom middle section is equipped with the pivot, the pivot is passed the shell roof and is extended to inside, oval baffle is installed to the inside pivot both sides of shell, shell inner wall both ends are seted up flutedly, the recess is close to one side at shell center and installs first magnet, install the second magnet with first magnet inter attraction on the baffle. The utility model discloses a set up first magnet and second magnet inter attraction, realize baffle and recess side zonulae occludens, have the effect of consolidating locking, through setting up the packing ring, block the rivers in the gap, improve pneumatic butterfly valve's sealing performance, through setting up the recess, make baffle and shell contactless, do not produce the friction, protecting sheathing and baffle have increased butterfly valve's life.

Description

Pneumatic butterfly valve with high sealing performance

Technical Field

The utility model relates to a butterfly valve technical field specifically is a pneumatic butterfly valve of high leakproofness.

Background

The pneumatic butterfly valve consists of a pneumatic actuator and a butterfly valve. The pneumatic butterfly valve is opened and closed by a circular butterfly plate rotating along with a valve rod to realize the pneumatic valve which starts to act, is mainly used as a cut-off valve, can also be designed to have the function of adjusting or adjusting a section valve, and is increasingly used on low-pressure large-and medium-caliber pipelines at present.

In the use of pneumatic butterfly valve, the leakproofness is one of the important factors of deciding pneumatic butterfly valve performance height and life length, the pneumatic butterfly valve of installation on the big well bore pipeline of current low pressure realizes the sealed of casing pipeline through the friction extrusion of butterfly plate and casing, the pneumatic butterfly valve of this kind of sealed mode is after long-term the use, the butterfly plate excessively rubs with the casing, cause the wearing and tearing of butterfly plate or casing, make butterfly plate and casing can not closely cooperate, can not reach the purpose of pipe seal promptly, on the other hand because the butterfly plate excessively rubs with the casing, cause the wearing and tearing of butterfly plate or casing, make the life of pneumatic butterfly valve shorten.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic butterfly valve of high leakproofness to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a pneumatic butterfly valve of high leakproofness, includes the shell, the shell top is connected with pneumatic actuator, pneumatic actuator bottom middle section is equipped with the pivot, the pivot passes the shell roof and extends to inside, oval baffle is installed to the inside pivot both sides of shell, shell inner wall both ends are seted up flutedly, first magnet is installed to one side that the recess is close to the shell center, install the second magnet with first magnet inter attraction on the baffle.

Preferably, the two side edges of the baffle are provided with gaskets.

Preferably, the annular connector is installed to the shell both sides, the opening has been seted up to connector edge equidistance.

Preferably, the baffle is a stainless steel baffle.

Preferably, the outer wall of the shell is wrapped with a layer of dust cover.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a set up first magnet and second magnet inter attraction, realize baffle and recess side zonulae occludens, have the effect of consolidating locking, through setting up the packing ring, block the rivers in the gap, improve pneumatic butterfly valve's sealing performance, through setting up the recess, make baffle and shell contactless, do not produce the friction, protecting sheathing and baffle have increased butterfly valve's life.

Drawings

Fig. 1 is a schematic front structural view of a pneumatic butterfly valve with high sealing performance according to the present invention;

fig. 2 is a schematic side structural view of the pneumatic butterfly valve with high sealing performance according to the present invention.

In the figure: the pneumatic actuator comprises a shell 1, a pneumatic actuator 2, a rotating shaft 3, a baffle 4, a groove 5, a first magnet 6, a second magnet 7, a gasket 8, an opening 9 and a connector 10

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, the present invention provides a technical solution: the utility model provides a pneumatic butterfly valve of high leakproofness, which comprises a housing 1, 1 top of shell is connected with pneumatic actuator 2, 2 bottom middle sections of pneumatic actuator are equipped with pivot 3, pivot 3 passes 1 roof of shell and extends to inside, oval baffle 4 is installed to 1 inside 3 both sides of pivot of shell, recess 5 has been seted up at 1 inner wall both ends of shell, first magnet 6 is installed to one side that recess 5 is close to 1 center of shell, install second magnet 7 with first magnet 6 inter attraction on the baffle 4, drive pivot 3 through pneumatic actuator 2 and rotate, and then make baffle 4 rotate, when baffle 4 and 5 lateral wall contacts of recess, first magnet 6 and second magnet 7 inter attraction, further strengthen being connected of baffle 4 and recess 5, prevent to be connected not hard up because of pivot 3 and baffle 4 and make the butterfly valve leakproofness descend.

Furthermore, the baffle 4 is provided with gaskets 8 at both side edges to prevent water from flowing through the gap.

Further, the annular connectors 10 are installed on two sides of the shell 1, the openings 9 are formed in the edges of the connectors 10 at equal intervals, and a butterfly valve is convenient to install.

Furthermore, the baffle 4 is a stainless steel baffle, so that the baffle 4 is prevented from rusting and affecting the water quality.

Further, wrap up the one deck dust cover on the 1 outer wall of shell, prevent that the shell dust is too much, probably influence quality of water when changing the pipeline.

Further, the pneumatic actuator 2 is connected with an external power supply and a control switch through a lead.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pneumatic butterfly valve of high leakproofness, includes shell (1), its characterized in that: the improved pneumatic actuator is characterized in that a pneumatic actuator (2) is connected to the upper portion of the shell (1), a rotating shaft (3) is arranged in the middle of the bottom of the pneumatic actuator (2), the rotating shaft (3) penetrates through the top wall of the shell (1) and extends to the inside, oval baffles (4) are installed on two sides of the rotating shaft (3) inside the shell (1), grooves (5) are formed in two ends of the inner wall of the shell (1), first magnets (6) are installed on one side, close to the center of the shell (1), of each groove (5), and second magnets (7) which attract the first magnets (6) mutually are installed on the baffles (4).

2. The pneumatic butterfly valve with high sealing performance according to claim 1, wherein: and gaskets (8) are arranged on the edges of the two sides of the baffle (4).

3. The pneumatic butterfly valve with high sealing performance according to claim 1, wherein: annular connector (10) are installed to shell (1) both sides, opening (9) have been seted up to connector (10) edge equidistance.

4. The pneumatic butterfly valve with high sealing performance according to claim 1, wherein: the baffle (4) is a stainless steel baffle.

5. The pneumatic butterfly valve with high sealing performance according to claim 1, wherein: the outer wall of the shell (1) is wrapped with a layer of dust cover.