CN205331451U

CN205331451U - Eccentric butterfly valve structure with from compensation function

Info

Publication number: CN205331451U
Application number: CN201620018921.5U
Authority: CN
Inventors: 孙海东
Original assignee: WUXI KELEI VALVE INDUSTRIAL CO LTD
Current assignee: WUXI KELEI VALVE INDUSTRIAL CO LTD
Priority date: 2016-01-08
Filing date: 2016-01-08
Publication date: 2016-06-22
Anticipated expiration: 2026-01-08

Abstract

The utility model relates to an eccentric butterfly valve structure with from compensation function, including the valve body, it has the through -hole to open in the valve body on, sets up the step along the inner wall of through -hole, the disk seat stretch into the through -hole of valve body interior and with the step butt, set up the valve plate in the disk seat. In the valve body, cup joint the shaftbushing in upper valve shaft 's periphery, the butt department of going up shaftbushing and valve plate forms first path shaft part, lower valve shaft is connected by second path shaft part, pitch diameter shaft part, big footpath shaft part and forms the step shaft, forms the compensation clearance that is used for the disk seat pressurized to squint between the inner wall of disk seat and first path shaft part and the pitch diameter shaft part. The utility model discloses simple structure, valve body when receiving from the pressure on a dextrad left side, the disk seat under the effect of step all the time with the valve body butt, the valve plate pressurized supports to the disk seat simultaneously, closely cooperates with the disk seat, forms and seals. Through the design compensation clearance, when the valve body received from the pressure on the left hand right side, the disk seat was in the effect in compensation clearance skew and keep closely cooperating forming in the valve plate all the time and seal up down.

Description

A kind of eccentric-butterfly-valve structure with self-compensating function

Technical field

This utility model relates to valve body apparatus field, particularly relates to a kind of eccentric-butterfly-valve structure with self-compensating function。

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。Fixing at existing butterfly valve structure seating position at present, when valve body is by bidirection press, the situation that valve plate blow-by causes valve body to leak easily occurring, thus reducing the work efficiency of valve body。

Utility model content

The applicant is for above-mentioned existing issue, having carried out Improvement, it is provided that a kind of eccentric-butterfly-valve structure with self-compensating function, in this utility model, valve seat has gap left and right displacement, when thus meeting valve body by bidirection press, valve plate closely cooperates with valve seat all the time, it is ensured that two way seal。

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

A kind of eccentric-butterfly-valve structure with self-compensating function, including valve body, has through hole on described valve body, and the inwall along described through hole offers step, and valve seat stretches in the through hole of valve body and abuts with step；Arranging valve plate in described valve seat, valve plate connects valve shaft and lower valve shaft respectively, forms the compensation gap for the skew of valve seat pressurized between the inwall of lower valve shaft, upper neck bush and valve seat。

Its further technical scheme is in that:

Neck bush in the periphery socket of valve shaft in described valve body, on described, the abutting place of described upper neck bush and valve plate forms the first path shaft part；Described lower valve shaft is formed multidiameter by the second path shaft part, central diameter shaft part, the connection of big footpath shaft part。

The beneficial effects of the utility model are as follows:

This utility model simple in construction, easy to use, effectively achieving being connected of valve seat and valve body by arranging step in the inside of valve body, valve body is when being subject to pressure from right to left, and valve seat abuts with valve body all the time under the effect of step, valve plate pressurized is against valve seat simultaneously, closely cooperates with valve seat。The mounting means that valve seat abuts with valve body step avoids and requires over a large amount of bolt fixed valve base and valve body in the past, not only reduces the labor intensity of workman, also improves efficiency of assembling, shortens installation time。By design compensation gap, when valve body is by pressure from left to right, valve seat offsets under the effect compensating gap and keeps closely cooperating being formed in valve plate all the time and seals, and utilizes compensation gap to achieve two way seal of the present utility model。The sealing in order to realize valve shaft outer ring of the layout of disc spring, applies pressure when stress to filler, utilizes packing press ring can provide carrying stress surface for disc spring stress, and the layout of sealing ring substantially increases sealing。

Accompanying drawing explanation

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

Fig. 2 is side view of the present utility model。

Wherein: 1, gland；2, disc spring；3, packing press ring；4, filler；5, upper neck bush；501, the first path shaft part；6, valve body；601, step；7, valve seat；8, PTFE；9, valve plate；10, lower neck bush；11, lower valve shaft；1101, the second path shaft part；1102, central diameter shaft part；1103, big footpath shaft part；12, upper valve shaft；13, sealing ring；14, gap is compensated。

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 and Figure 2, a kind of eccentric-butterfly-valve structure with self-compensating function described in the utility model includes valve body 6, through hole is had on valve body 6, inwall along through hole offers step 601, valve seat 7 stretches in the through hole of valve body 6 and abuts with step 601, valve plate 9 is set in valve seat 7, valve body 6 is stretched in one end of upper valve shaft 12 and the one end with valve plate 9 is socketed, one end of lower valve shaft 11 is also stretched in valve body 6 and is socketed in the other end of valve plate 9, makes valve plate more than 9 valve shaft 12 or lower valve shaft 11 rotate in valve body 6 for the point of rotation；Neck bush 5 in valve body 6, on the periphery of upper valve shaft 12 is socketed, the abutting place of upper neck bush 5 and valve plate 9 forms the first path shaft part 501。Lower valve shaft 11 is connected by the second path shaft part 1101, central diameter shaft part 1102, big footpath shaft part 1103 and forms multidiameter, forms the compensation gap 14 for the skew of valve seat 7 pressurized between inwall and the first path shaft part 501 and the central diameter shaft part 1102 of valve seat 7。Also offering groove in the inner ring place of valve seat 7, in groove, interlocking is for the PTFE8 (PTFE is politef) with valve plate 9 sealing。In one end of valve body 6, also coordinate gland 1 in the periphery of upper valve shaft 12。Between the inwall and the periphery of upper valve shaft 12 of upper neck bush 5, also order arranges one group of disc spring 2, packing press ring 3, filler 4 and sealing ring 13。In valve body 6, it is also provided with sealing ring 13 along the outer ring of upper neck bush 5。In valve body 6, the periphery along lower valve shaft 11 footpath shaft part 1103 significantly is also provided with multiple sealing ring 13。Lower neck bush 10 is also set up in the periphery of lower valve shaft 11。Above-mentioned packing press ring 3 is for providing carrying stress surface to the disc spring 2 of stress deformation。The sealing in order to realize valve shaft outer ring of the layout of disc spring, applies pressure when stress to filler。

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. the eccentric-butterfly-valve structure with self-compensating function, it is characterized in that: include valve body (6), through hole is had on described valve body (6), inwall along described through hole offers step (601), and valve seat (7) stretches in the through hole of valve body (6) and abuts with step (601)；Valve plate (9) is set in described valve seat (7), valve plate (9) connects valve shaft (12) and lower valve shaft (11) respectively, forms the compensation gap (14) for the skew of valve seat (7) pressurized between the inwall of lower valve shaft (11), upper neck bush (5) and valve seat (7)。

2. a kind of eccentric-butterfly-valve structure with self-compensating function as claimed in claim 1, it is characterized in that: the upper neck bush (5) of periphery socket of valve shaft (12) in described valve body (6), on described, the abutting place of described upper neck bush (5) and valve plate (9) forms the first path shaft part (501)；Described lower valve shaft (11) is formed multidiameter by the second path shaft part (1101), central diameter shaft part (1102), big footpath shaft part (1103) connection。