Modern homes, high-rise buildings, and more than a dozen families use a common flue, and China people like to stir-fry in a big fire, paying attention to color, flavor and taste. Every dinner, the smell of what food is cooked next door wafts over, which is generally unbearable for housewives who live at home. How can we avoid the smell of oil smoke from neighbor's cooking coming to your house along the flue? Today, Bunny will introduce an artifact-flue check valve and its installation diagram.

What is the flue check valve

As the name implies, the flue check valve is used in the pipeline system, that is, the flue. Its main function is to prevent the medium from flowing backwards, and it can be applied to pipelines with various media. The installation of the flue check valve must be done before the ceiling in the kitchen! Generally, the smoke crossings left by developers are above the normal ceiling height, so once the ceiling is made, it will be much more troublesome to install a check valve.

The main reason is that the check valves of developers are generally poor. After a long time, the smoke will get greasy on the loose-leaf opening, and the wind is not easy to be pumped out, which will affect the performance of the smoking machine. The working principle of the flue check valve is as follows: when the range hood is working, the valve plate is opened by the power of the range hood, so that the indoor lampblack is discharged into the public flue through the valve; When the range hood stops working, the valve plate will automatically close to prevent the waste gas in the flue from flowing back, so as to prevent the oil fume from flowing backwards, and prevent the cross-contamination of indoor oil fume.

installation of flue check valve

how to install it after understanding the importance of check valve? Then look down:

1. Install the fireproof flue check valve at the reserved check valve hole of each flue. First, mix the cement with special glue and cover the edge of the check valve, and then install it at the reserved check valve hole.

2. An oil screen is installed at the air inlet of the valve body, an oil receiving box is arranged under the screen, and the oil screen is connected with the air inlet of the valve body in a movable pumping mode; A whole plate damper is installed in the non-return valve cavity behind the oil screen; The air inlet pipe body is sleeved in the non-return valve cavity; The air door is installed on the pipe body through an eccentric shaft fixed on the wall of the air inlet pipe, and the air outlet of the check valve can be opened and closed around this shaft.

Precautions for installation of kitchen flue

First, the auxiliary flue must be kept

Every kitchen has a flue, and at the same time, the flue is divided into main flue and auxiliary flue. The main flue runs through the whole building, while the auxiliary flue is relatively independent. Generally, the lampblack in the home will go to the auxiliary flue first, and then enter the main flue through the hole in the partition, so as to ensure that the lampblack in each household is isolated. However, if the auxiliary flue is directly connected to the main flue, it will lead to the phenomenon of inverted smoke or cross smoke due to too low pressure.

Second, pay attention to the construction details

First of all, it is very important to choose the installation location of the range hood. The shorter the pipe, the better. Some owners will pull the pipes longer for the sake of beauty. In this way, after turning off the range hood, there will be a lot of oil smoke in the pipes that can't be discharged and then poured back indoors. In addition, in order not to destroy the original main and auxiliary flue, its opening direction can not be changed at will, so it must be played in the auxiliary flue.

Third, pay attention to the safety of smoke exhaust from windows

In order to avoid the problem of smoke cross-talk, some owners give up the original flue and directly open holes in the windows to exhaust smoke. This is ok, but there are several points to pay attention to.

first of all, you must get the consent of the property before opening holes in windows or walls; Secondly, pay attention to the safety problem. Generally, the end of the smoke exhaust pipe is made of metal. If the hole is too small, the metal heat transfer may cause the glass to burst and hurt pedestrians, and the smoke exhaust pipe leads out of the window, and the strong north wind blowing against it will lead to oil smoke backflow. It's best to extend the pipeline and then nest it down, so as to avoid rainwater from flowing into the pipeline when it rains, and keep the windshield outside.

iv. frequent replacement of non-return valve

if the auxiliary flue has been removed, or it is necessary to prevent smoke from pouring out, then use the flue non-return valve. Under normal circumstances, the check valve effect of the range hood is not obvious, but installing the check valve in the flue can protect the range hood, so that the smoke in the flue will not flow backwards into the pipeline and the range hood. However, after installing the check valve, it should be cleaned regularly, otherwise it will make the check valve open and lose its effect, and it is best to replace the flue check valve every two years or so.

After knowing how to install it, Rabbit still wants to emphasize the importance of installing the flue check valve again. Generally, it is recommended to install a public flue, whether it is about to be renovated or under renovation, because the high-rise lampblack is easy to flow backwards, so you can consider saving some money at the lower level, and because the check valve has different materials such as plastic and stainless steel to choose from, the relative price is about 111 yuan, which is not expensive, but it is really useful. And if it is installed, you can find a master who is helping to decorate it at home according to this article.

the above is the related content of the installation schematic diagram of the flue check valve, hoping to help everyone!

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