CN2692434Y

CN2692434Y - Automatic exhaust valve

Info

Publication number: CN2692434Y
Application number: CN 200420041827
Authority: CN
Inventors: 陆茂; 徐尚义
Original assignee: SHANXI FENGHUO COMMUNICATION GROUP CO Ltd
Current assignee: SHANXI FENGHUO COMMUNICATION GROUP CO Ltd; Shaanxi Fenghuo Communication Group Co Ltd
Priority date: 2004-04-15
Filing date: 2004-04-15
Publication date: 2005-04-13
Anticipated expiration: 2014-04-15

Abstract

The utility model relates to an automatic air exhaust valve which is provided with a valve body (1) used as an air collecting cylinder. The valve body (1) is divided into two parts, and the middle part is clamped and sealed by bolts into a whole. One end of the valve body (1) is connected with a pipe joint (5), and the other end is provided with a pipe opening which is arranged on the outer end of an air exhaust opening (6). A piston rod (2) and a floating ball (4) are positioned in the valve body (1). One end of the piston rod (2) is fixed on the floating ball (4), the other end extends into a pipe opening on the inner end of the air exhaust opening (6), and the top end is fixed with a flexible rubber cushion. The pipe opening on the inner end of the air exhaust opening (6) is provided with a lug boss which is conveniently contacted and sealed with the flexible rubber cushion. The utility model adopts an air exhaust working theory of a piston rod type T-shaped channel to control the working program of the automatic air exhaust valve. The utility model limits the radial swing of the floating ball, which guarantees the closing reliability of the air exhaust opening and is superior to a lever type floating ball.

Description

Automatic control pressure vent

Technical field

The utility model belongs to parts or the accessory technical field in the building heating system, is used in the automatic control pressure vent on heat supply pipeline or the seal container specifically.

Background technique

Existing automatic control pressure vent, the technical problem underlying of existence is:

(1), outlet valve housing material, adopt the technology of steel appearance coated rust proof paint.After using a period of time, the impurity that the rust proof paint of valve inner comes off and steel oxidation produces clings the movable members of outlet valve inside or stops up relief opening, causes outlet valve malfunctioning;

(2), ball float and immovable point adopt lever to be connected, in use for some time, lever produces bending deflection, the lifting of obstruction ball float influences proper functioning;

(3), the sealing contact surface of the relief opening of outlet valve all adopts the metallic material switch, sealing surface weares and teares easily, produces to leak;

(4), ball float adopts the fixed structure of door-hinge formula, ball float fluctuates and relies on buoyancy and deadweight fully, behind the valve inner deposition impurity, clings movable members easily and stops up relief opening, causes outlet valve malfunctioning.

Summary of the invention

The utility model takes following technological means to solve the problem that exists in the background technique:

(1), valve body material, shell divides two kinds, a kind of is the punching press of steel cold drawing, surface plastic spraying; Another kind of shell is a copper material.Can prevent the oxidation of outlet valve valve inner, produce oarse-grained corrosion impurity, influence the proper functioning of outlet valve;

(2), adopting the gather qi together cylinder to reach " piston " rod-type promotes the structure that ball float moves, limits radially wobbling of ball float, guarantee the reliability of exhaust close;

(3), relief opening close the sealing contact surface structure, adopt the rubber soft material to combine with the metallic hard material, not only improved the leakproofness of anti-leak but also ensure close reliably;

(4), between piston-rod lower end and ball float, spring is set, prevent that piston rod top and relief opening from clinging and cause outlet valve malfunctioning, reach the purpose of automatically uninterrupted exhaust.

Specifically, the technical solution of the utility model is: a kind of automatic control pressure vent, it has as the valve body of gather qi together cylinder (1), valve body (1) is divided into two-part and its middle part is sealed into one by the bolt crimping, one end of valve body (1) is connected with pipe joint (5), and the other end is equipped with relief opening (6) the outer end mouth of pipe; Piston rod (2) and ball float (4) are positioned at valve body (1) and piston rod (2) one ends are fixed on the ball float (4), the inner mouth of pipe and piston rod top that piston rod (2) the other end stretches into relief opening (6) are fixed with the flexible rubber pad, are shaped on the boss of being convenient to the contact seal of flexible rubber pad simultaneously in the inner mouth of pipe of relief opening (6).

The spring (3) that ball float (4) can be pushed open is housed on piston rod (2).The effect of spring is to prevent from that piston rod top and relief opening from clinging to cause outlet valve malfunctioning, reaches the purpose of automatically uninterrupted exhaust.

Compare with existing automatic control pressure vent, the utlity model has following advantage:

(1), automatic control pressure vent adopts " piston rod " formula T-shaped passage exhaust work principle, the working procedure of control automatic control pressure vent.Limit radially wobbling of ball float, guaranteed the reliability of exhaust close, be better than the Lever type ball float;

(2), between piston-rod lower end and ball float, spring is set, prevent that piston rod top and relief opening from clinging and cause malfunctioningly, improve the reliability of work;

(3), the structure of closing relief opening adopts the rubber soft material to combine with the metallic hard material, not only improved the leakproofness of anti-leak but also ensured close reliable, be better than firmly hard push rod mode;

(4), the rubber pad on piston rod top and the sealing of relief opening be that face contacts, and reduced the wearing and tearing between the contact part, is better than the sealing mode of circumference form;

(5), the piston rod type exhaust port adopts T-shaped, the air displacement of exhaust passage is big, can thoroughly prevent impurity obstruction air flue in the sealing;

(6), the manufacturing and designing of this outlet valve, valve body, joint and ball float are all selected copper material for use, strengthen the anti-corrosive properties of product, can prevent the exert an influence proper functioning of outlet valve of large particle iron rust.Shell divides two kinds, and a kind of is the punching press of steel cold drawing, and surface plastic spraying is applicable to outdoor pipe network; Another kind of shell is a copper material, is installed in indoorly, and service life is long, and is aesthetic in appearance.

Description of drawings

Accompanying drawing is the utility model structural representation.

Embodiment

A kind of automatic control pressure vent, it has as the valve body of gather qi together cylinder (1), and valve body (1) is divided into two-part and its middle part is sealed into one by the bolt crimping, and an end of valve body (1) is connected with pipe joint (5), and the other end is equipped with relief opening (6) the outer end mouth of pipe; Piston rod (2) and ball float (4) are positioned at valve body (1) and piston rod (2) one ends are fixed on the ball float (4), the inner mouth of pipe and piston rod top that piston rod (2) the other end stretches into relief opening (6) are fixed with the flexible rubber pad, are shaped on the boss of being convenient to the contact seal of flexible rubber pad simultaneously in the inner mouth of pipe of relief opening (6).The spring (3) that ball float (4) can be pushed open is housed on piston rod (2).

The utility model working principle:

(1), when having gas to exist in the system because the principle of proportion, ball float drives piston rod and is in bottom in the outlet valve, at this moment, the gas of outlet valve inside cavity, all the exhaust port by valve body chamber inner top passes through relief opening and drains into atmosphere.

(2), when outlet valve inside cavity water-filling, ball float promotes piston rod and moves upward under buoyancy function, during all towards full water, under buoyancy function, the inlet of relief opening is promptly withstood on the piston rod top in the outlet valve cavity, relief opening " shut " close, stop exhaust.

Automatic control pressure vent carries out gather qi together and exhaust according to said process, gets rid of free gas in pipeline or the containment system.

Claims

1, a kind of automatic control pressure vent, it is characterized in that having valve body (1) as the gather qi together cylinder, valve body (1) is divided into two-part and its middle part is sealed into one by the bolt crimping, and an end of valve body (1) is connected with pipe joint (5), and the other end is equipped with relief opening (6) the outer end mouth of pipe; Piston rod (2) and ball float (4) are positioned at valve body (1) and piston rod (2) one ends are fixed on the ball float (4), the inner mouth of pipe and piston rod top that piston rod (2) the other end stretches into relief opening (6) are fixed with the flexible rubber pad, are shaped on the boss of being convenient to the contact seal of flexible rubber pad simultaneously in the inner mouth of pipe of relief opening (6).

2, automatic control pressure vent according to claim 1 is characterized in that being equipped with the spring (3) that ball float (4) can be pushed open on piston rod (2).