CN2259541Y

CN2259541Y - Bi-directional safety valve

Info

Publication number: CN2259541Y
Application number: CN 96205424
Authority: CN
Inventors: 赵英辰; 白树德; 王清殿
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-16
Filing date: 1996-02-16
Publication date: 1997-08-13
Anticipated expiration: 2006-02-16

Abstract

The utility model relates to a bi-directional safety valve. The lower part of a valve body is a connecting flange; the inside of the valve body and an air sealing valve make slide connection; a rubber elastic pad is fixed between the valve body and a valve cap; the valve cap is connected with a positive pressure valve which is communicated with the connecting flange through a breathing pipe. The utility model has the advantages of high sensitivity and high safety.

Description

Bidirectional relief valve

The utility model relates to a kind of positive negative pressure bidirectional relief valve.

In the prior art, it is the individual event positive valve that general fermenting tub etc. has the safe vent valve of pressure vessel, and the untimely discovery of generation negative pressure can cause the tank body distortion or have an accident in jar, and general positive valve sensitivity is low, is difficult to control rated pressure.

The purpose of this utility model provides a kind of positive negative pressure bidirectional relief valve.

The purpose of this utility model realizes by following measure, valve body (11) one ends of bidirectional relief valve are connecting flange (16), the screw that connects with tank body is arranged on the flange, pore is arranged at the top of connecting flange (16), envelope gas cushion rubber (13) is arranged in uniform pore external slot, the disking body combination seal of envelope gas cushion rubber (13) and gas sealing disk (12) bottom, the sliding axle middle part on gas sealing disk (12) top is by the dividing plate location of valve body (11) middle part band pore (14), spring (10) is arranged between the dividing plate of the snap ring of sliding axle outside and valve body (11), on the outer wall of valve body pore is arranged, the top of valve body (11) connects with valve gap (8), compress rubber mat (9) between the two, rubber mat (9) middle part corresponding envelope air valve sliding axle partly has jacking block, the top of valve gap connects positive valve, the inner chamber of positive valve communicates with the inner chamber of valve gap (8) by the mesopore of valve gap, the stomidium of positive valve (3) is outside to connect breathing pipe (1) by tube head nut (2), breathing pipe (1) bottom joins by tube head nut (15) and connecting flange (16), and the inner chamber pore of connecting flange (16) communicates with breathing pipe (1).

Envelope vent plug (4) in the positive valve valve body connects valve rod (5), and control spring (6) is arranged on the valve rod (5), and an end of valve rod connects pressure regulating screw (7).

Narrate below in conjunction with drawings and Examples.

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

With reference to Fig. 1 is an embodiment of the present utility model, and its structure as mentioned above.

This bidirectional relief valve is used on the fermenting tub of brewery, when malleation reaches rating value in the jar, air communication is crossed the inner chamber aperture of connecting flange (16) and the envelope vent plug action that breathing pipe (1) promotes positive valve, air-flow enters valve gap (8) inner chamber, the jacking block that presses on the rubber mat (9) moves down, promote gas sealing disk (12) and move down, realize the venting decompression.

When negative pressure reaches definite value in the jar, to inhale moving gas sealing disk (12) and move down, the realization air inlet is boosted.

This bidirectional relief valve is highly sensitive, the sealing good stability, and Security is good.

Claims

1, a kind of bidirectional relief valve, an end that it is characterized in that valve body (11) is connecting flange (16), the screw that connects with tank body is arranged on the connecting flange, pore is arranged at the top of connecting flange (16), envelope gas cushion rubber (13) is arranged in uniform pore external slot, the disking body combination seal of envelope gas cushion rubber (13) and gas sealing disk (12) bottom, the sliding axle middle part on gas sealing disk (12) top is by the dividing plate location of valve body middle part band pore (14), spring (10) is arranged between the dividing plate of the snap ring of sliding axle outside and valve body (11), on the outer wall of valve body pore is arranged, the top of valve body (11) connects with valve gap (8), compress rubber mat (9) between the two, rubber mat (9) middle part corresponding envelope air valve sliding axle partly has jacking block, the top of valve gap connects positive valve, the inner chamber of positive valve communicates with the inner chamber of valve gap (8) by the mesopore of valve gap, the outside breathing pipe (1) that connects of the stomidium of positive valve (3), breathing pipe (1) bottom and connecting flange (16) join, and the inner chamber pore of connecting flange (16) communicates with breathing pipe (1).

2, bidirectional relief valve according to claim 1 is characterized in that the envelope vent plug (4) in the positive valve valve body connects valve rod (5), and control spring (6) is arranged on the valve rod (5), and an end of valve rod connects pressure regulating screw (7).