CN86209301U

CN86209301U - Shutter type one-way valve for natural ventilating vent

Info

Publication number: CN86209301U
Application number: CN 86209301
Authority: CN
Inventors: 阎世达; 毛海峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-11-24
Filing date: 1986-11-24
Publication date: 1987-09-23

Abstract

The utility model relates to a shutter type one way valve for a natural ventilating vent, which mainly comprises a valve body (1), sealed materials (2), a blade of valve (3), and a spacing rope (4). The blade of valve (3) can automatically fall down to open the valve when the indoor atmospheric pressure of residents are larger than the atmospheric pressure in exhaust air ducts, and otherwise the valve is shut down. The utility model can effectively prevent the backflow of air stream in exhaust air ducts entering into the room of the resident, and can prevent indoor air pollution of the backflow. The utility model has the advantages of simple structure, no energy resource consumption, reliable working, long lifetime.

Description

Shutter type one-way valve for natural ventilating vent

The utility model relates to a kind of one-way cock of the aperture that ventilates, and pulls out the one-way cock in air flue natural ventilation aperture especially for building.

Present many buildings, particularly civil building, its inner draft type are to adopt to pull out the air flue natural ventilation.Under the normal condition, indoor air enters and pulls out air flue through being opened in ventilation aperture on the wall, upwards flows, and enters atmosphere from the relief opening that is positioned at the building top.Because of various reasons, air refluence phenomenon often takes place, promptly air is gone into indoor from pulling out upper airway flow.Especially for the ventilation in dark kitchen, dark lavatory in the civil building, this phenomenon is even more serious.Owing to use the same air flue that pulls out until each resident family of the bottom from the superiors, when certain resident family in pulling out air flue during discharge of noxious gases (as coal stove flue gas, culinary art oil gas etc.), the air-flow of this refluence can cause the pollution of other resident family's indoor air.The lighter brings peculiar smell, and weight person causes personal injury, even the dead extreme event of the gas poisoning that took place to cause thus.For preventing harmful gas from pulling out in the air flue inlet chamber, the way of solution can adopt forced ventilation, promptly installs ventilator additional in the ventilation aperture.Though effect is good like this, cost of investment height, during-operation service expense height are difficult to promote in China at present.Other way is exactly from being about to the obstruction of vent hole mouth by resident family.Though can avoid harmful gas to pour in down a chimney like this, indoor air can't be discharged from the ventilation aperture, the ventilation aperture has lost the meaning that exists.

The purpose of this utility model be used for the natural ventilation aperture in order to provide a kind of, make air-flow can only one-way flow, can close, cut off respond well, the foolproof louvered one-way cock of structure during the air-flow reverse flow immediately automatically.

The utility model is achieved in that the framework made from on-deformable material such as plastics, metal or timber as valve body, has several wickets on it.Be added with sealing material around these wickets, each window be furnished with a slice light weight and the thin slice of certain intensity is arranged such as aluminium flake as valve disc.There is axle the valve disc lower end, is installed in the bearing on the valve body, and valve disc can be rotated flexibly around this axle.During valve closing, valve disc is in plumbness, is adjacent to wicket sealing material all around, reaches the purpose of airflow partition.During valve opening, valve disc departs from plumbness, is that the center freely is rotated and toppled over the axle of its lower end, the window unlatching on the valve body.Whole valve is the form of venetian blind.Under normal circumstances, when promptly room pressure was greater than the air pressure that pulls out in the air flue, valve disc was opened under the effect of this positive pressure difference, and indoor air can enter and pull out air flue.In case pull out air pressure in the air flue greater than room pressure, reverse flow will take place air-flow, lightweight valve disc backward rotation under the effect of this backpressure difference at this moment is the close on the valve body.So just reached make air-flow can only from indoor in pulling out air flue the purpose of one-way flow.The utility model is simple in structure, does not consume any energy, the functional reliability height, and the life-span is long.

Concrete structure of the present utility model is provided by the following examples and accompanying drawing thereof.

Fig. 1 is the longitudinal sectional view of a kind of concrete structure of the utility model.

Fig. 2 is the front view of this device.

Fig. 3 is the partial enlarged drawing of I portion among Fig. 1.

Below in conjunction with CONSTRUCTED SPECIFICATION and the working condition of accompanying drawing detailed description according to the concrete device that the utility model proposes.

See figures.1.and.2, the valve body (1) that this device is that deformable material is made by being difficult for, profile is rectangle, sealing material (2), lightweight rectangle valve disc (3) and spacing rope (4) are formed.Valve disc (3) is in opening state in Fig. 1.

With reference to Fig. 1, valve body (1) has four windows (8) that can be closed by valve disc (3), has sticked flexible barrier material (2) around the window (8).Valve disc (3) is closed its periphery of back and is fitted with sealing material (2), stops the reverse flow of air-flow effectively.Have groove (5) on two madial walls of valve body (1) symmetrically, the end of groove (5) is bearing (7).There is axle (6) valve disc (3) lower end, and the two end part of axle during assembling (6) can push in the bearing (7) along groove (5).Stepped as shown in Figure 3 between bearing (7) and the groove (5).The bottom surface of bearing (7) tilts, and is a bit larger tham the diameter of axle (6), can guarantee to make valve disc (3) to rotate flexibly like this, again can be when the thickness of sealing material (2) to be slightly different, and it is unaffected that valve disc (3) is closed the sealability of late gate.

When room pressure during greater than the air pressure that pulls out in the air flue, valve disc (3) is that the center is freely rotated clockwise and toppled over axle (6) under the effect of this pressure difference and self gravitation, stops until limited rope (4), is in opening state.Air-flow is through window (8), stream from the top of every valve disc by.Air pressure in pulling out air flue is during greater than the room pressure certain value, and the gravity that valve disc (3) overcomes self rotates counterclockwise, and window (8) is closed, and stops the reverse flow of air-flow.The effect of spacing rope (4) is to be kept at an angle after valve disc (3) is opened, and makes valve disc (3) can not exceed valve body, to adapt to various ventilations aperture.

Because the air pressure that pulls out in the air flue must be greater than room pressure until the horizontal component that overcomes valve disc gravity, just can make valve disc (3) transfer closed condition to from opening state, so the dump angle of valve disc (3) is unsuitable excessive, be advisable between 25 °～35 °, valve disc should be made by light thin material such as aluminium flake in addition.When valve disc material proportion is 6, thickness is 0.3mm, when dump angle is 30 °, pulls out the air flue internal air pressure greater than the about 0.1g/cm of room pressure ², valve disc (3) is rotated counterclockwise from opening state.

During use, this device is installed on place, ventilation aperture with adhesive or screw gets final product.Valve body (1) and between the walls are answered good seal, prevent that from then on harmful gas from revealing.This device all can adapt to well to the ventilation aperture of difformity and size.

Claims

1, a kind of louvered one-way cock that is used for the natural ventilation aperture, can stops the air-flow reverse flow.It is characterized in that by the front have the valve body (1) of several windows (8), the spacing rope (4) that has the rectangle valve disc (3) of axle (6) and longitudinally stride across valve body (1) back side with the corresponding lower end of window (8) quantity is formed.

2, the described one-way cock of claim 1 is characterized in that valve disc (3) freely topples over the restriction that is subjected to spacing rope (4) after the unlatching, and its tilt angle is between 25 °～35 °.

3, the described one-way cock of claim 1, it is characterized in that having symmetrically on two interior sidewall surface of valve body (1) the corresponding groove of quantity (5) with valve disc (3), the end of groove (5) is bearing (7), and bearing (7) is stepped with groove (5), and the bottom surface of bearing (7) is the inclined-plane.The two ends of valve disc axle (6) can fall in the bearing (7) along groove (5), and bearing (7) is greater than the diameter of axle (6).

4, the described one-way cock of claim 1 is characterized in that between valve disc (3) and the valve body (1) flexible barrier material (2) being arranged, and sealing material (2) sticks around ventilation window (8).