CN2327855Y

CN2327855Y - Breathing valve device

Info

Publication number: CN2327855Y
Application number: CN 97226974
Authority: CN
Inventors: 罗会超
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-09-13
Filing date: 1997-09-13
Publication date: 1999-07-07
Anticipated expiration: 2007-09-13

Abstract

The utility model relates to a breathing valve device used on a sealed water tank, which is composed of a valve body and a valve ball. A valve is under a valve seat at the center of the valve body, and the abutted surface of the valve seat and the valve is a sealing surface. The valve ball supported by a ball tray is under the valve. When the device is arranged on the sealed water tank and used, the valve is closed by means of the buoyancy of the valve ball, so that action is slow and has no impact on the sealing surface. Gradual pressure seal is realized by means of the up-and-down differential pressure of the valve, and the sealing performance is good. Because the valve seat is provided with a plurality of gas passages, the problems of breathing gas and pressure water storage of the sealed water tank under normal pressure are effectively solved. The utility model is an ideal valve device for sealed water tanks.

Description

The inhalation valve door device

The utility model relates to a kind of inhalation valve door device that is applied to airtight water tank (for example pressure type resevoir).

In traditional high-level tank water mode, water tank often is an open architecture, its water level adopts the control of Lever type float valve mostly, but this control mode has such problem, the jam of float valve or poorly sealed, cause water level constantly to rise, float valve damages inefficacy easily, even can cause the waste of water resources; The airtight water tank that designs for " secondary pollution " that solves open tank, for example pressure type purifies resevoir (Chinese patent application number: 97215847.2) owing to need possess the function of pressure water storage and tidal air, and wish to address this problem by valve, the Lever type float valve can't realize still not having desirable appropriate products in the market.

The purpose of this utility model is to provide a kind of inhalation valve door device that is used on the airtight water tank, the tidal air problem when it can solve the pressure water storage of airtight water tank and normal pressure effectively.

The purpose of this utility model is achieved through the following technical solutions: the inhalation valve door device is made of valve body and valve ball, valve body central authorities stud with valve seat, have some passages that are used for breathing gas on the valve seat, the bottom of valve seat is an annular sealing surface, the valve seat center has a pilot hole, under the annular sealing surface of valve seat bottom is the upper end sealing surface of valve, the rod end of valve inserts in the pilot hole of valve seat, and hang by nut, under the toroidal surface of valve lower end a valve ball of holding by the ball holder of fixing.

The utility model also can be set up air chamber above valve body, the gas-filtering device of packing in the air chamber.

Working condition of the present utility model and beneficial effect are: it is installed on when using on the airtight water tank, usually, because the breathing gas passage is arranged, communicates with atmosphere in the water tank.When pipe network water supply entered water tank, along with the rising of water level, valve ball promoted to move on the valve, valve upper end sealing surface is fitted with valve seat bottom annular sealing surface and is also sealed, breathing gas pathway closure, build-up pressure gradually in the water tank, under the effect of inside and outside differential pressure power, valve seal is tighter; When pipe network was cut off the water, water tank still kept certain pressure, along with the minimizing of water storage capacity after the water, pressure reduces gradually, leaves valve until valve ball, and valve is opened under the effect of deadweight and inside and outside differential pressure power, ambient atmosphere by gas channel to the water tank tonifying Qi, to keep internal and external pressure balance; When pipe network supplies water when entering water tank once more, repeat said process again.This shows, tidal air and pressure water storage problem when the utility model has solved airtight resevoir normal pressure effectively, make it have distinct advantages with certain pneumatic water supply, valve relies on the buoyancy of valve ball to close, slow in one's movements, sealing surface there is not impact, by valve difference force pressure sealing gradually up and down, favorable sealing property.

Now the utility model embodiment is described in detail in conjunction with Figure of description:

Accompanying drawing is a structure sectional view of the present utility model.

Illustrated inhalation valve door device is in opening state.The central authorities of valve body 5 have been bumped into valve seat 3, and the center of valve seat 3 is shaped on a pilot hole, are shaped on several tidal air passages 8 all around.The rod end of valve 4 is inserted in the valve seat centre pilot hole from bottom to top, screw with nut after exposing pilot hole, thereby valve 4 is hung.The bottom of valve seat 3 is an annular sealing surface 9, is the upper-end surface of valve 4 under it, and promptly valve sealing face 10, and the lower end surface of valve 4 is a toroidal surface 11.The lower end of valve body 5 is welded with a ball holder 7, is holding in the palm a valve ball 6 in the ball holder 7, is the lower end toroidal surface 11 of valve 4 directly over the valve ball 6.For the air free from admixture that the utility model is entered, to insert air filter 1 in the air chamber above valve body 5, and then air chamber cover 2 is screwed on valve body 5, the below of air chamber cover 2 is shaped on air inlet/outlet 12.

The method that the utility model is installed on the airtight water tank is; Be welded with band outer screw thread seat ring at the top of airtight water tank, the utility model is placed on this seat ring, valve ball is pushed down the valve body outer with locknut again in water tank, and screws fastening with seat ring.

Claims

1. inhalation valve door device, comprise valve body and valve ball, of the present utility model being characterised in that: valve body central authorities stud with valve seat, have some passages that are used for breathing gas on the valve seat, the bottom of valve seat is an annular sealing surface, the valve seat center has a pilot hole, under the annular sealing surface of valve seat bottom is the upper end sealing surface of valve, the rod end of valve inserts in the pilot hole of valve seat, and hang by nut, under the toroidal surface of valve lower end a valve ball of holding by the ball holder of fixing.

2. inhalation valve door device according to claim 1 is characterized in that: the valve body top is provided with air chamber, and gas-filtering device is housed in the air chamber.