CN2888202Y

CN2888202Y - Butterfly valve

Info

Publication number: CN2888202Y
Application number: CN 200620101438
Authority: CN
Inventors: 孙成义
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-04
Filing date: 2006-03-04
Publication date: 2007-04-11
Anticipated expiration: 2016-03-04

Abstract

The utility model discloses a butterfly valve, an upper valve body and a lower valve body form an inner cavity of the valve body, the central position of the upper valve body and the lower valve body is provided with a valve rod hole, the inner cavity of the valve body is embedded with a seal ring and a valve board, the upper and lower end of which is provided with square valve rod hole, round head for the lower valve rod is arranged inside the round hole of the lower valve body and square head is arranged inside the square hole of the valve board, said square head for the upper valve rod is directly inserted into the square head of the valve board through the valve rod hole of the valve body, the lower-middle part of the upper valve rod is provided with a spring embedding ring, a copper nut and an O-shape rubber ring, the top of the upper valve body is provided with a flange with a positioning post at the rim, a flow score board and a handle, the round disc of the handle is provided with a spring, a safety pin and a fixing pin. The utility model has adopted the structure of split-body valve body, the valve rod and non-pin valve board to terminate the pin hole on the valve board and widen the seal surface of the seal ring, utterly solving the difficult problem of normal leaking for the butterfly valve and has the advantages of simple structure and convenient installation and maintenance.

Description

Butterfly valve

Technical field

The utility model relates to the butterfly valve of control flow rate on a kind of pipeline, especially adopts split type valve body, stem structure and does not have the pin valve plate.

Background technique

At present, the butterfly valve of control flow rate structure is made up of valve body, valve rod and valve plate, the handle of monomer on the known pipeline, valve rod is directly fixed on valve body lower end by the valve plate endoporus by valve body top valve rod hole, valve plate and valve rod adopt dowel fixes, the pin hole of valve plate is the disadvantage of butterfly valve seepage, and the maintenance of monolithic valve body, valve rod is very inconvenient.

Summary of the invention

In order to overcome the technical deficiency of existing butterfly valve, the utility model provides a kind of split type valve body, stem structure and does not have the butterfly valve of pin valve plate, and the seal ring sealing surface of this butterfly valve is widened, and sealability improves greatly, and I﹠M is convenient.

The purpose of this utility model provides a kind of butterfly valve, it is to be assembled into body cavity by upper valve body and following valve body, on, the central position of following valve body is provided with valve rod hole, embed seal ring in the body cavity, valve plate, the upper and lower end of valve plate is provided with square valve rod hole, its lower valve rod round end is allocated into down in the valve body circular hole, square toes are allocated in the valve plate square hole, eliminate pin hole on the valve plate, thoroughly solved a valve plate pin hole seepage difficult problem, described upper valve rod square toes directly insert in the valve plate square hole by the valve rod hole of valve body, in the upper valve rod on the lower side portion be provided with the spring capel, copper nut, O type rubber ring, the upper valve body top is provided with the flange that there is locating column at the edge, flow mark plate, handle, the handle disk is provided with spring, arming pin, fixing pin cooperates by arming pin on the handle and flow mark plate, with the flow of control butterfly valve, reach the purpose of accurate control flow rate.

The beneficial effects of the utility model are to utilize split valve body, valve rod and no pin valve board structure to eliminate pin hole on the valve plate, widen the sealing surface of seal ring, have thoroughly solved the difficult problem of common butterfly valve seepage, simple in structure, installation and maintenance convenience.

Description of drawings:

Below in conjunction with accompanying drawing and example the utility model is further specified:

Fig. 1 is a structural drawing of the present utility model.

Fig. 2 is a blast structural drawing of the present utility model.

Upper valve rod in the drawings, 1; 2, arming pin; 3, handle; 4, locating column; 5, upper valve body; 6, valve plate; 7, following valve body; 8, seal ring; 9, copper nut; 10, O type rubber ring; 11, spring capel; 12, lower valve rod; 13, screw; 14, flow mark plate; 15, flange; 16, fixing pin; 17, spring.

Embodiment:

In Fig. 1, belt supporting frame upper valve body 5 is formed the butterfly valve inner chamber with following valve body 7, embed seal ring 8, valve plate 6 in the butterfly valve inner chamber, upper valve rod 1 directly inserts in the valve plate hole 6 from upper valve body 5 valve rod holes, upper valve body 5 upper end mating edges are along flange 15, handle 3 that locating column 4 is arranged, handle 3 dishes are provided with arming pin 2, fixing pin 16, and upper valve rod 1 upper end is stretched out handle 3 dishes and fixed with hold-doun nut.

In Fig. 2, embed seal ring 8 in following valve body 7 inner chambers, then lower valve rod 12 round ends are allocated into down in valve body 7 holes by seal ring 8 holes, again valve plate 6 square hole alignment lower valve rods 12 are allocated in seal ring 8 inner chambers, it will be equipped with spring capel 11, O type rubber ring 10, upper valve rod 1 square toes of copper nut 9 insert in valve plate 6 square holes by seal ring 8 holes, upper valve body 5 valve rod holes of employing belt supporting frame pack into upper valve rod 1 and engage with screw 13 fixing with following valve body 7, its upper valve body 5 upper end mating edges are along the flange 15 that locating column 4 is arranged, allocate flow mark plate 14 in flange 15 inner chambers into, be provided with handle 3 above the flange 15, handle 3 dishes are provided with arming pin 2, arming pin 2 is provided with spring 17, handle 3 dishes adopt fixing pin 16 to be fixed on the flange 15, during use, earlier arming pin 2 is up drawn and revolve, according to required flow handle 3 is rotated then, aim at flow mark plate 14 holes, handle 3 rotations are upper valve rod 1 simultaneously, valve plate 6, lower valve rod 12 rotates opens or closes valve plate 6, behind the control valve flow, upper end arming pin 2 rotation is put down, and at this moment arming pin 2 can be fixed on arming pin 2 by spring 17 in the suitable metering orifice of flow mark plate 14 with firm discharge.

Claims

1, a kind of butterfly valve, it is characterized in that being assembled into body cavity by upper valve body and following valve body, on, the central position of following valve body is provided with valve rod hole, embed seal ring in the body cavity, valve plate, the upper and lower end of valve plate is provided with the square valve rod hole, its lower valve rod round end is allocated into down in the valve body circular hole, square toes are allocated in the valve plate square hole, described upper valve rod square toes directly insert in the valve plate square hole by the valve rod hole of valve body, in the upper valve rod on the lower side portion be provided with the spring capel, copper nut, O type rubber ring, the upper valve body top is provided with the flange that there is locating column at the edge, flow mark plate, handle, the handle disk is provided with spring, arming pin, fixing pin.

2, butterfly valve according to claim 1 is characterized in that it all is squares that upper and lower valve rod and valve plate match one.

3, butterfly valve according to claim 1, what it is characterized in that valve plate and valve rod match all is square holes.

4, butterfly valve according to claim 1 is characterized in that being carved with on the flange flowmeter numerical table.

5, butterfly valve according to claim 1 is characterized in that arming pin is provided with the tooth post.