CN205331452U - Biplate body butterfly valve structure with shaft seal - Google Patents

Abstract

The utility model relates to a biplate body butterfly valve structure with shaft seal, including each other for the last valve body connected and valve body down, set up the disk seat between the valve body under and in last valve body, follow the periphery suit elasticity back of disk seat, upper valve shaft 's one end runs through the valve body and is connected with the valve plate, lower valve shaft's one end with the valve body is connected down, lower valve shaft's the other end also is connected with the valve plate, in the junction of upper valve shaft, lower valve shaft and valve plate, upper valve shaft and lower valve shaft's periphery still the order cup joint a plurality of dish springs and clamping ring, still set up O type sealing washer and V type sealing washer between the outer wall of the inner wall of clamping ring and valve shaft. The utility model discloses simple structure, convenient to use can realize hanging customer's description or engineering code through the design earhole, prevent that the problem that the unable model of differentiation appears in the customer from taking place, and there is the elastic compaction in arranging of dish spring between messenger its and the disk seat, utilizes the clamping ring to bear the stress surface for dish spring atress provides, O type sealing washer between while clamping ring inner wall and the valve shaft outer wall and V type sealing washer arrange the great leakproofness that has improved.

Description

A kind of biplate body butterfly valve structure with sealing

Technical field

This utility model relates to field, especially a kind of biplate body butterfly valve structure with sealing。

Background technology

Butterfly valve is again flap valve, it it is the adjustment valve of a kind of simple in construction, can be used for the butterfly valve of the on-off control of low pressure pipeline medium and refer to that closure member (flap or butterfly plate) is disk, rotate a kind of valve reaching to open and close around valve shaft, valve can be used for controlling the flowing of all kinds fluids such as sky gas and water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium。Current existing butterfly valve structure causes leakage due to the not good valve body that is easily caused of sealing effectiveness, thus affecting enterprise's manufacturing schedule, increases product rework rate。

Utility model content

The applicant, for above-mentioned existing issue, has carried out Improvement, it is provided that a kind of biplate body butterfly valve structure with sealing, its advantage with good sealing effect。

The technical scheme that this utility model adopts is as follows:

A kind of biplate body butterfly valve structure with sealing, including the upper valve body connected each other and lower valve body, arranges valve seat between described upper valve body and lower valve body, and the periphery along described valve seat is set with elastic backrest；One end of upper valve shaft is run through upper valve body and is connected with valve plate, and one end of lower valve shaft is connected with described lower valve body, and the other end of described lower valve shaft is also connected with valve plate；In the junction of described upper valve shaft, lower valve shaft and valve plate, on described, the periphery of valve shaft and lower valve shaft also order is socketed multiple disc spring and pressure ring, also sets up O RunddichtringO and V-shaped seal ring between the inwall and the outer wall of valve shaft of described pressure ring。

The beneficial effects of the utility model are as follows:

This this utility model simple in construction, easy to use, hanging client's description or engineering code can be realized by designing earhole, prevent the problem that product type occurs cannot be distinguished by client from occurring, additionally by increasing elastic backrest in valve seat outer ring, elastic backrest is utilized to support to valve seat and fixing, make valve seat be unlikely to deform, substantially increase the service life of valve seat, it is ensured that stable sealing and moment of torsion。The layout of disc spring makes to exist between itself and valve seat elastic compaction, utilizes pressure ring can provide carrying stress surface for disc spring stress, and simultaneously the layout of O RunddichtringO between pressure ring inwall and valve shaft outer wall and V-shaped seal ring substantially increases sealing。

Accompanying drawing explanation

Fig. 1 is front view of the present utility model。

Fig. 2 is sectional structure schematic diagram of the present utility model。

Fig. 3 is the Fig. 2 structure for amplifying schematic diagram at A place。

Wherein: 1, groove；2, flange portion；3, dust-proof seal ring；4, axle sleeve；51, upper valve shaft；52, lower valve shaft；6, disc spring；7, valve seat；8, elastic backrest；9, O RunddichtringO；10, valve plate；11, earhole；12, upper valve body；13, bolt；14, lower valve body；15, V-shaped seal ring；16, pressure ring。

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described。

As shown in Figure 1, Figure 2 and Figure 3, upper valve body 12 and the lower valve body 14 that a kind of biplate body butterfly valve structure with sealing includes connecting each other, affixed by bolt 13 between upper valve body 12 and lower valve body 14。Arranging valve seat 7 between upper valve body 12 and lower valve body 14, the periphery along valve seat 7 is set with elastic backrest 8。One end of upper valve shaft 51 is run through upper valve body 12 and is connected with valve plate 10, and one end of lower valve shaft 52 is connected with described lower valve body 14, and the other end of described lower valve shaft 52 is also connected with valve plate 10；In the junction of described upper valve shaft 51, lower valve shaft 52 and valve plate 10, in the periphery of upper valve shaft 51 and lower valve shaft 52, also order is socketed multiple disc spring 6 and pressure ring 16, as shown in Figure 1, the outer wall of pressure ring 16 one end inwall and valve seat 7 is worked in coordination, O RunddichtringO 9 and V-shaped seal ring 15 is also set up between the inwall and the outer wall of upper valve shaft 51 of pressure ring 16, when disc spring 6 carries stress deformation, pressure ring 16 is used for providing carrying stress surface to abut disc spring 6。As shown in Figure 1 and Figure 2, also setting up flange portion 2 in the top of upper valve body 12, also have groove 1 in the top of flange portion 2, stretch out formation flange in the bottom of flange portion 2, along the periphery of upper valve body 12, has earhole 11 on flange。Earhole 11 is arranged symmetrically with centered by the axle of valve shaft 5。Dust-proof seal ring 3 and axle sleeve 4 is also set up in the periphery of above-mentioned upper valve shaft 51。The periphery of above-mentioned axle sleeve 4 adopts polytetrafluorethylecoatings coatings, and valve seat 7 adopts PTFE material to make, and elastic backrest adopts silica gel material to make, it is ensured that valve seat 7 is unlikely to deform, and improves serviceability and the service life of valve seat 7。Above-mentioned upper valve body 12 adopts ductile cast iron material to make with lower valve body 14, is also coated with epoxy coating on upper valve body 12 with lower valve body 14。The layout of disc spring 6 makes there is elastic compaction between itself and valve seat 7, substantially increases sealing。The effect of being squeezed between pressure ring 16 and valve shaft 5 of above-mentioned O RunddichtringO 9, thus forming sealing。

Above description is to explanation of the present utility model, is not the restriction to utility model, and this utility model limited range is referring to claim, and when without prejudice to basic structure of the present utility model, this utility model can do any type of amendment。

Claims (1)

1. the biplate body butterfly valve structure with sealing, including the upper valve body (12) connected each other and lower valve body (14), it is characterized in that: arrange valve seat (7) between described upper valve body (12) and lower valve body (14), the periphery along described valve seat (7) is set with elastic backrest (8)；One end of upper valve shaft (51) is run through upper valve body (14) and is connected with valve plate (10), one end of lower valve shaft (52) is connected with described lower valve body (14), and the other end of described lower valve shaft (52) is also connected with valve plate (10)；In described upper valve shaft (51), the junction of lower valve shaft (52) and valve plate (10), the periphery also order of valve shaft (51) and lower valve shaft (52) is socketed multiple disc spring (6) and pressure ring (16) on described, also sets up O RunddichtringO (9) and V-shaped seal ring (15) between the inwall and the outer wall of upper valve shaft (51) of described pressure ring (16)。