CN203477343U

CN203477343U - High-strength double-spring butterfly type stop valve

Info

Publication number: CN203477343U
Application number: CN201320486856.5U
Authority: CN
Inventors: 王志喜; 刘浩
Original assignee: TIANJIN LEICESTER VALVE Co Ltd
Current assignee: TIANJIN LEICESTER VALVE Co Ltd
Priority date: 2013-08-09
Filing date: 2013-08-09
Publication date: 2014-03-12
Anticipated expiration: 2023-08-09

Abstract

The utility model relates to a high-strength double-spring butterfly type stop valve. A fixing beam is fixedly installed at one diameter position inside a valve seat, symmetrical guide oblique planes are formed on the side edge, facing the water inlet direction, of the fixing beam, a main shaft parallel to the fixing beam is fixedly installed inside a valve body on the axial right side of the fixing beam, an upper valve clack and a lower valve clack are symmetrically and elastically hinged to the main shaft and respectively rotate relatively around the main shaft, and the periphery of the upper valve clack and the periphery of the lower valve clack are in sealing fit with the valve seat. The valve seat internally and fixedly provided with an inward-convex shoulder structure is coaxially and integrally arranged in the middle inside the valve body, and a guide oblique plane is formed on the side wall, facing the water inlet direction, of the inward-convex shoulder inside the valve seat. The glue hanging valve seat formed in a casting mode is adopted, outer flanging fixedly connected with the valve body is integrally arranged on the end portion of the valve seat, the axial stability and sealing precision of the valve seat can be effectively guaranteed, the problem of valve seat loosing caused after the high-strength double-spring butterfly type stop valve is used for a long time is avoided, and the service life of the valve is prolonged.

Description

High strength dual spring butterfly stop valve

Technical field

The utility model belongs to valve field, especially a kind of high strength dual spring butterfly stop valve.

Background technique

Butterfly stop valve claims again butterfly check valve, and its effect is only to allow medium to flow to a direction, and stops direction to flow.Common this valve is automatic operation, and under the mobile fluid pressure action of direction, flap is opened; When fluid flows, by the flap of coincidence certainly of hydrodynamic pressure and flap, act on valve seat in the other direction, thereby cut off, flow.But current stop valve can only be arranged on horizontal pipe, rely on flap deadweight to block runner, the action of damming is slower, and sealing is poor.

Model utility content

The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of high strength dual spring butterfly stop valve of reasonable in design, simple in structure, easy to operate, long service life is provided.

The utility model solves its technical problem and takes following technological scheme to realize:

A kind of high strength dual spring butterfly stop valve, comprise valve body, valve seat, fixed beam, upper flap, lower Disc, main shaft, positioning rod and torque spring, valve body is a cylinder barrel shaped structure, in described valve seat, a diametrical position is fixed with a fixed beam, fixed beam side towards water inlet direction is shaped with symmetrical guiding surface, in the valve body on the axial right side of this fixed beam, be fixed with a main shaft parallel with fixed beam, on this main shaft, symmetrical elasticity is hinged with flap and lower Disc, on this flap with lower Disc respectively around the relative rotation of main shaft, the outer rim of upper flap and lower Disc all coordinates with valve base sealing, it is characterized in that: in described valve body, the coaxial one in middle part is fixed with the valve seat of an internal shoulder structure in being shaped with, in the valve seat in water inlet direction, internal shoulder sidewall is shaped with guiding surface.

And, in the valve body on described main shaft right side, be fixed with a positioning rod parallel with main shaft, on main shaft, spacer sleeve is equipped with two torque springs, the two ends of one of them torque spring press-fit respectively and are fixed on flap and positioning rod, and the two ends of another torque spring press-fit respectively and are fixed on lower Disc and positioning rod.

And the reinforced block hinge that described upper flap and lower Disc are fixedly mounted with by a plurality of intervals is respectively contained on main shaft.

Advantage of the present utility model and good effect are:

1, the utility model adopts the Double-disc type structure of symmetrical hinge dress, according to pipeline flow, opens respectively, dams, stop effective, and fast response time.

2, flap of the present utility model is all provided with powerful torque spring, increases rebound velocity, guarantees sealing and the cutout speed of response of stop valve, lift line Security.

3, valve seat of the present utility model and valve body adopt integrally casting moulding, and stabilized structure, can be arranged in vertical pipeline, the valve seat distortion that is difficult for getting loose, and overall mechanical properties is strong, long service life.

4, the utility model response quick action that dams, good seal performance, and also simple in structure, easily to control, valve part reliability is high, long service life.

Accompanying drawing explanation

Fig. 1 is structural front view of the present utility model;

Fig. 2 is the rear view of Fig. 1;

Fig. 3 is that the A-A of Fig. 1 is to sectional view;

Fig. 4 is the use view of Fig. 3.

Embodiment

Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.

A kind of high strength dual spring butterfly stop valve, comprise valve body 1, valve seat 3, fixed beam 4, upper flap 2, lower Disc 5, main shaft 8, positioning rod 4 and torque spring 6, valve body is a cylinder barrel shaped structure, in this valve body, the coaxial one in middle part is fixed with the valve seat of an internal shoulder structure in being shaped with, as shown in Figure 3, in figure, left side is water inlet direction, and in the valve seat in water inlet direction, internal shoulder sidewall is shaped with guiding surface.

In described valve seat, a diametrical position is fixed with a fixed beam, fixed beam side towards water inlet direction is shaped with symmetrical guiding surface, in the valve body on the axial right side of this fixed beam, be fixed with a main shaft parallel with fixed beam, on this main shaft, symmetrical elasticity is hinged with flap and lower Disc, on this, flap is with lower Disc respectively around the relative rotation of main shaft, and the outer rim of upper flap and lower Disc all coordinates with valve base sealing.

In order to guarantee the rebound velocity of upper flap and lower Disc, in the valve body on described main shaft right side, be fixed with a positioning rod parallel with main shaft, on main shaft, spacer sleeve is equipped with two torque springs, the two ends of one of them torque spring press-fit respectively and are fixed on flap and positioning rod, the two ends of another torque spring press-fit respectively and are fixed on lower Disc and positioning rod, under torque spring effect, described upper flap and lower Disc coordinate with valve base sealing when not being subject to axial force.

In order to guarantee the intensity of flap, reinforced block 7 hinges that described upper flap and lower Disc are fixedly mounted with by a plurality of intervals are respectively contained on main shaft.

If accompanying drawing 3 is to as shown in accompanying drawing 4, left side water inlet right side water outlet is through-flow direction, and while there is adverse current in pipeline, the rapid resilience of upper flap and lower Disc and valve seat form sealing, block runner, effective anti-backflow.

Although disclose for the purpose of illustration embodiment of the present utility model and accompanying drawing, but it will be appreciated by those skilled in the art that: within not departing from the spirit and scope of the utility model and claims, various replacements, variation and modification are all possible, therefore, scope of the present utility model is not limited to embodiment and the disclosed content of accompanying drawing.

Claims

1. a high strength dual spring butterfly stop valve, comprise valve body, valve seat, fixed beam, upper flap, lower Disc, main shaft, positioning rod and torque spring, valve body is a cylinder barrel shaped structure, in described valve seat, a diametrical position is fixed with a fixed beam, fixed beam side towards water inlet direction is shaped with symmetrical guiding surface, in the valve body on the axial right side of this fixed beam, be fixed with a main shaft parallel with fixed beam, on this main shaft, symmetrical elasticity is hinged with flap and lower Disc, on this flap with lower Disc respectively around the relative rotation of main shaft, the outer rim of upper flap and lower Disc all coordinates with valve base sealing, it is characterized in that: in described valve body, the coaxial one in middle part is fixed with the valve seat of an internal shoulder structure in being shaped with, in the valve seat in water inlet direction, internal shoulder sidewall is shaped with guiding surface.

2. high strength dual spring butterfly stop valve according to claim 1, it is characterized in that: in the valve body on described main shaft right side, be fixed with a positioning rod parallel with main shaft, on main shaft, spacer sleeve is equipped with two torque springs, the two ends of one of them torque spring press-fit respectively and are fixed on flap and positioning rod, and the two ends of another torque spring press-fit respectively and are fixed on lower Disc and positioning rod.

3. high strength dual spring butterfly stop valve according to claim 1, is characterized in that: the reinforced block hinge that described upper flap and lower Disc are fixedly mounted with by a plurality of intervals is respectively contained on main shaft.