CN202708125U

CN202708125U - Butterfly valve

Info

Publication number: CN202708125U
Application number: CN 201220326777
Authority: CN
Inventors: 江炜; 张群
Original assignee: FUJIAN GENERAL VALVE Co Ltd
Current assignee: FUJIAN GENERAL VALVE Co Ltd
Priority date: 2012-07-08
Filing date: 2012-07-08
Publication date: 2013-01-30
Anticipated expiration: 2022-07-08

Abstract

The utility model discloses a butterfly valve and belongs to the technical field of valves. The butterfly valve comprises a valve body, a butterfly plate, a valve rod, a sealing base and a handle. The valve rod penetrates through the valve body, a gland is fixedly mounted on the valve body, a cavity among the valve body, the gland and the valve rod forms a padding chamber, fillers are arranged in the padding chamber, the handle is arranged at the upper end of the valve rod, the lower end of the valve rod is connected with the butterfly plate which is matched with the sealing base, the butterfly plate comprises a main butterfly plate and an auxiliary butterfly plate, the auxiliary butterfly plate is mounted on the valve rod, and the main butterfly plate is mounted on the auxiliary butterfly plate through fasteners. When the butterfly plate is not tightly connected with the sealing base, the butterfly valve is simple to maintain, the maintenance cost is reduced, and is widely applied in the valve manufacturing industry.

Description

Butterfly valve

Technical field

The utility model relates to valve technology field, is specially a kind of novel butterfly valve.

Background technique

Butterfly valve refers to that closure member (flap or butterfly plate) is disk, centers on a kind of valve that valve rod rotates to reach open and close, and main rising cut off and throttling action on pipeline.The butterfly valve open-shut device of conventional construction is a discoidal butterfly plate, is directly installed on the valve rod lower end, and the axis around himself rotates in valve body, thereby reaches the purpose that opens and closes or regulate.The shortcoming of this structure is, when butterfly plate and sealing seat occur contact when tight, the butterfly plate that need to more renew is not only wasted resource, and delayed the manufacture cycle.

The model utility content

Technical problem to be solved in the utility model is: a kind of butterfly valve is provided, when contacting closely with sealing seat with the butterfly plate that solves traditional butterfly valve, must more renews butterfly plate and cause the problem of resource, time waste.

For solving the problems of the technologies described above, the technical solution of the utility model is: butterfly valve, comprise valve body, butterfly plate, valve rod, sealing seat and handle, described valve rod passes described valve body, be installed with gland on the described valve body, described valve body, cavity between gland and the described valve rod forms filler chamber, in the described filler chamber filler is set, described handle is installed in the upper end of described valve rod, the lower end connects the butterfly plate that matches with described sealing seat, described butterfly plate comprises main butterfly plate and secondary butterfly plate, and described secondary butterfly plate is installed on the described valve rod, and described main butterfly plate is installed on the secondary butterfly plate by fastening piece.

As a kind of improvement, be provided with spacer between described main butterfly plate and the secondary butterfly plate.

The utility model is owing to adopted above structure, has following beneficial effect: because butterfly plate is divided into two-part that main butterfly plate and secondary butterfly plate can dismounting, the sealing surface of main butterfly plate is responsible for forming sealing with sealing seat, secondary butterfly plate is responsible for connecting main butterfly plate and valve rod, convenient disassembly, be convenient to safeguard, and only need more when changing that the change owner butterfly plate gets final product, reduced maintenance cost.

Owing on the junction plane of main butterfly plate and secondary butterfly plate spacer is set, can adjusts easily the gap between main butterfly plate and the sealing seat; Like this, when butterfly plate contacts closely with sealing seat, needn't more renew butterfly plate, simply adjust and get final product, convenient and swift, saved cost and time.

Description of drawings

Accompanying drawing is structural representation of the present utility model;

Among the figure: 1, valve body, 2, valve rod, 3, sealing seat, 4, handle, 5, gland, 6, filler, 7, main butterfly plate, 8, secondary butterfly plate, 9, taper pin, 10, socket cap screw, 11, spacer.

Embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

As shown in drawings, a kind of butterfly valve, comprise valve body 1, butterfly plate, valve rod 2, sealing seat 3 and handle 4, valve rod 2 passes valve body 1, be installed with gland 5 on the valve body 1, valve body 1, cavity between gland 5 and the valve rod 2 forms filler chamber, filler 6 is set, the upper end mounting handle 4 of valve rod 2 in the filler chamber, the butterfly plate that lower end joint and seal seat 3 matches, butterfly plate comprises main butterfly plate 7 and secondary butterfly plate 8, and secondary butterfly plate 8 is installed on the valve rod 2, and main butterfly plate 7 is installed on the secondary butterfly plate 8 by fastening piece, secondary butterfly plate 8 is provided with the sealing surface that matches with sealing seat 3, the sealing face adopts the built-up welding cobalt base hard alloy, and sealing surface is wear-resistant, long service life.Usually, those skilled in the art can utilize taper pin 9 to be installed on the valve rod 2 secondary butterfly plate 8 according to usual means, and main butterfly plate 7 utilizes socket cap screw 10 to be installed on the secondary butterfly plate 8.

For the sealing effect of the main butterfly plate 7 of convenient adjustment with sealing seat 3, be provided with spacer 11 between main butterfly plate 7 and the secondary butterfly plate 8.During use, when main butterfly plate 7 contacts closely with sealing seat 3, needn't more renew butterfly plate, only need to change a spacer 11 and get final product, simply adjust and get final product, convenient and swift, saved cost and time.

The utility model is not limited to above-mentioned concrete mode of execution, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within the protection domain of the present utility model.

Claims

1. butterfly valve, comprise valve body, butterfly plate, valve rod, sealing seat and handle, described valve rod passes described valve body, be installed with gland on the described valve body, cavity between described valve body, gland and the described valve rod forms filler chamber, in the described filler chamber filler is set, described handle is installed in the upper end of described valve rod, the lower end connects the butterfly plate that matches with described sealing seat, it is characterized in that: described butterfly plate comprises main butterfly plate and secondary butterfly plate, described secondary butterfly plate is installed on the described valve rod, and described main butterfly plate is installed on the secondary butterfly plate by fastening piece.

2. butterfly valve according to claim 1 is characterized in that: be provided with spacer between described main butterfly plate and the secondary butterfly plate.