CN2564818Y

CN2564818Y - Reinforced duplex check valve

Info

Publication number: CN2564818Y
Application number: CN 02277009
Authority: CN
Inventors: 吕萨
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-08-05
Filing date: 2002-08-05
Publication date: 2003-08-06
Anticipated expiration: 2012-08-05

Abstract

The utility model relates to a reinforced duplex check valve. The utility model is provided with a valve body, one end of the valve body is an air inlet, the other end is an air outlet, a shutter type check valve is inserted between the air inlet and the air outlet, the air outlet part is provided with a valve plate, and the valve plate is arranged on the shaft which is arranged on the center level B of the air outlet or the tube wall on the lower part of the air outlet; meanwhile, the lower side of the inner wall of the air outlet of the valve body can be provided with a positioning boss, and the appropriate position of the valve plate is provided with a matching block. The utility model has the advantages of simple structure, easy fabrication, and convenient operation; the utility model can effectively improve the fume exhaust effect of the concentrated smoke exhaust system of houses, and the utility model is suitable to be matched with various types of concentrated smoke exhaust systems of the houses to use.

Description

The dual safety check of enhancement mode

Technical field

The utility model relates to a kind of safety check.Refering in particular to is a kind of dual safety check of enhancement mode that is applied to residential housing kitchen, toilet cigarette, the concentrated releasing system of gas.

Background technique

At present, the kitchen of residential housing, toilet cigarette, gas are concentrated releasing system, be generalizable, it comprises check valve, concentrates compositions such as outlet pipe, roof exhaust outlet, its working principle is that the flue gas that premises produces is sent into concentrated outlet pipe through check valve, rises to roof exhaust outlet discharging through concentrating outlet pipe; The dwelling house cigarette of this structure, gas are concentrated releasing system, have solved indoor cigarette, the concentrated emission problem of gas preferably, have improved the dwelling house surrounding enviroment and have polluted; But because its check valve structure that adopts is not too reasonable, generally adopt traditional louvered check valve, its valve plate is opened deficiency, resistance is excessive when causing cigarette, gas discharging, and discharge amount is reduced, and has influenced the working efficiency that cigarette, gas are concentrated releasing system; Recently, have a kind of eccentric check valve to come out, its patent No. " 99239938.6 ", its structural feature are at exhaust outlet one valve plate to be installed, and the position of valve plate main shaft is in the top at exhaust outlet center; The check valve of this structure, it is big to have the valve plate open angle, the advantage that exhaust resistance is little, but because its eccentric main axis is in the top, center of exhaust outlet, therefore, when valve plate was opened, axle top air displacement was less, and axle below air displacement is bigger, valve plate can not be opened to level in addition, angle is an acute angle between it and the exhaust port central shaft, therefore, and under the guiding of valve plate, the cigarette of discharging through the axle below, gas must possess the trend to the motion of relief opening below, like this, will with flue in, the air-flow of motion produces and to answer back to from bottom to top, influence emission effect, when serious, very cause the product cigarette, the phenomenon that gas recharges influences the performance of system's normal function.Recently, the check valve that has the valve plate bottom directly to be hinged on exhaust outlet tube wall bottom edge emerges, though the valve plate opening of this check valve can surpass 90 degree, but this moment, its valve plate then can't return, therefore, its opening is limited in 90 degree, and the exhaust port area is little, and it is smooth and easy that influence is discharged fume.

Summary of the invention

The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of simple and reasonable, and is easy to manufacture in addition, easy to use, and cigarette, gas discharge passage residential housing cigarette, gas are smoothly concentrated the dual safety check of enhancement mode of releasing system use.

The utility model is to adopt following proposal to realize, it has a valve body, valve body one end is an intake grill, the other end is an exhaust outlet, between intake grill and exhaust outlet, be fitted with a louvered safety check, be provided with a valve plate at the exhaust outlet place, valve plate is installed on the axle that is arranged on exhaust outlet central horizontal face B or its below tube wall, perpendicular distance C 〉=1cm of this 4 distance of shaft centers exhaust outlet tube wall bottom A, simultaneously, be provided with a location boss at valve body exhaust outlet inwall downside, be provided with a balancing weight in the valve plate appropriate location.

The utility model is owing to adopt said structure, on the one hand, because the axle of valve plate is in the exhaust outlet central lower, therefore, when valve plate is opened, its main exhaust outlet is in the exhaust outlet central upper, valve plate is opened the back and is an obtuse angle with the exhaust outlet center line in addition, plays a leading role, and the flue gas direction of moving from bottom to top in the cigarette, fate line direction that makes exhaust outlet and the smoke-ejecting pipe is consistent, phenomenon is answered back in unlikely generation, makes the fume emission passage smooth and easy; On the other hand, when valve plate and louvered closure of check ring, because its dual non-return effect, can guarantee that flue gas can not pour in down a chimney to dwelling house in the flue, can effectively improve the effect of central exhaust system, simultaneously cigarette, gas non-return, because the louvered safety check adopts the plug-in type structure, when its page sheet has been infected with greasy dirt, dust, can be easily with it to extract out in the valve body, to clean, can effectively simplify purging system cleaning, maintenance work; In sum, the utility model is simple in structure, and manufacturing is easy, and is easy to use, can effectively improve the smoke discharging effect of dwelling house central exhaust system, is suitable for using with the dwelling house central exhaust system support of various models.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

Embodiment

See accompanying drawing, the utility model is by valve body 1, louvered safety check 2, valve plate 3, axle 4 is formed, described valve body 1 one ends are intake grill 5, the other end is an exhaust outlet 6, between intake grill 5 and exhaust outlet 6, be fitted with a louvered safety check 2, valve plate 3 is installed on the axle 4 that is arranged on exhaust outlet 6 central horizontal face B or its below tube wall, perpendicular distance C 〉=1cm of the distance of shaft centers tube wall bottom A of axle 4 is provided with a location boss 7 below exhaust outlet 6 inwalls of valve body 1, the appropriate location is provided with a balancing weight 8 on valve plate 3.The utility model in use, earlier with its intake grill and premises suction fan Chu Kou Even Xiang, exhaust outlet then is connected with main smokejack in the dwelling house central exhaust gas system, utilizes the forced exhaust of indoor exhaust machine, louvered safety check and valve plate are opened, realized the exhaust purpose; When stopping exhaust, the louvered safety check return of will conducting oneself with dignity reaches the non-return purpose, and valve plate is the counterweight because of being provided with on it then, makes its self-return, reaches the purpose of non-return equally.

Claims

The dual safety check of enhancement mode, comprise valve body 1, louvered safety check 2, valve plate 3, axle 4, positioning boss 7, balancing weight 8, it is characterized in that: valve plate 3 is installed on the axle 4 that is arranged on exhaust outlet 6 central horizontal face B or its below tube wall, perpendicular distance C 〉=1cm of the distance of shaft centers exhaust outlet tube wall bottom A of axle 4.