Please explain how the flue is installed?

Installation steps: Trim the reserved hole of the floor slab (large deviation notifies the civil engineer to chisel), first pop out the center line of the reserved hole of the floor slab, and trim it according to the size requirements of the reserved hole according to the center line. Distribute the pipes on each layer according to the installation drawing. Layer by layer installation from bottom to top, after adjusting the verticality, the exhaust air duct is temporarily fixed with concrete blocks.

At the interface of the upper and lower exhaust pipes, 801 glue is mixed with vegetarian cement slurry, and the mixed mortar is scraped and coated at the end of the pipe according to the weight ratio of 1. Exhaust ducts of kitchen and other sections are supported every 5 floors.

For details, see the Guangdong 12J T910 standard atlas. After the completion of the sectional project, the verticality, the height of the air inlet, and the quality of the pipe body are checked. After the completion of the section, the nozzle is covered to prevent debris from falling into the pipeline.

Because the exhaust duct is a thin-walled component, it should be lifted and placed gently when moving and installing, and should not be impacted and collided, and heavy objects should not be stacked on the pipeline and walked. If there is local damage, under the premise of not affecting the use effect, 1:2 cement mortar and 5% glue can be used to repair it on site.

After the system is completed, the system is self-tested.

The flue is installed layer by layer from bottom to top, and special attention should be paid to checking the flue model and floor. Strictly according to the mark of the product model code, install in order, and never install it by mistake during installation. The flue must be installed at the joints of the floor slab, the joints between the upper and lower pipes are sealed with cement sand ash, the gap between the pipeline and the floor slab is filled with C20 fine stone concrete, and the C20 concrete ridge is poured (the thickness of the ridge is 80, and the elevation of the top of the ridge is 200 higher than the elevation of the hall floor), and the exhaust duct of each layer should be supported (the lower end of the flue is embedded with iron parts, and the angle steel is welded at the floor slab).

After the flue is installed, the gap between the flue and the wall must be filled with C20 fine stone concrete, if the gap is too small, the wall should be plastered before the flue is installed to prevent the flue from leaking over the wall. During construction, foreign objects are not allowed to be put into the flue, and during the construction and installation of the flue, the nozzle should be shielded until the interface is installed. When shielding is thin-walled cement mortar, the manufacturer should embed the iron wire on its surface to facilitate the external pulling during dismantling, so as not to cause the thin-walled wall to fall into the flue during demolition.

In order to standardize and facilitate the connection between the kitchen flue and the range hood, the pipe manufacturer should provide a special exhaust duct air inlet interface for the construction unit to embed when plastering in the kitchen. Pay attention to the settlement of the flue on the first floor, and pay attention to ensure that the flue on the first floor settles together with the building. When cleaning the surface of the flue, a net should be hung between the flue and the wall to prevent cracking at the joints.

I have to say that there are still many profits in the direction of kitchen flue installation, so in recent years, some manufacturers have also targeted this piece of fat, and some manufacturers even give users the best quality flue pipes, resulting in vicious competition in the market, which also lays a bad factor for our future life. But in any case, we should pay attention to the aforementioned when installing the kitchen flue, and we still have to shop around in the choice of pipes to avoid unnecessary losses.

The main and auxiliary flues are independent of each other. When we install the kitchen flue, we should separate the main flue and the auxiliary flue, and the standard smoke exhaust method is generally to discharge the oil smoke to the auxiliary flue first, and then inject it into the main flue through the auxiliary flue. If the main and auxiliary pipes are connected together, then there will be backlash because the pressure on the main pipe is greater than that of the secondary pipe.

The shorter the range hood duct, the better. The pipe installation of the range hood is best as short as possible, because if the pipe connected to the range hood is too long, it will not only waste materials, but also make the smoke remain in the pipe, when we turn off the range hood, the smoke will flow back to the room, thus affecting our kitchen environment.

The smoke exhaust opening of the window should be large, and the pipe opening to the outside should be facing the center of the earth. If the window smoke vent opening is too small, the temperature of the smoke exhaust will crack the glass. The opening of the pipe leading to the outside of the window is facing the center of the earth to prevent foreign objects from entering the pipe when it rains or winds.

The check valve is cleaned regularly. Under normal circumstances, we install a check valve to better prevent smoke back-up and better protect our range hood, but the check valve is often filled with thick dirt, which will affect the effect of our range hood, so we should regularly clean the check valve. The long-term operation of the check valve will also consume its capacity, so in order to better achieve the effect of smoke exhaust, it is also a good choice to choose to replace a check valve after a few years.

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1. During the construction of the main structure, according to the position of the design drawings, the hole of the ventilation flue is reserved, and the size of the hole is 50 80mm more than the peripheral size of the component. The reinforcement in the reserved hole should also be reserved.

2. Before installation, according to the size of the ventilation flue, hang the vertical line from the top hole to ensure the verticality of the flue installation.

3. When the first layer is installed, first use 1:2 cement mortar to level the ground. After the first section of the pipe seat is slurred, C20 concrete with a height of about 40cm is poured in the pipe; After the concrete is finally set, the upper ventilation flue is installed.

4. First, the lower mouth seat of the connector is disturbed at the upper mouth of the lower flue partition, and its four sides should also be sealed with slurry. The ventilation flue should be treated as a layered support. Construction Practices:

After the upper and lower pipelines are slurry on the right seat, the interface of the upper and lower floor ventilation flue is generally located at the floor slab, so the embedded steel plate at the root of the pipeline is welded 12 steel bars and the hole reserved steel bar welding, supported on the floor base.

5. The joint surface of the upper and lower sections of the ventilation flue is coated with polymer cement slurry (108 glue: cement = 6:1); The joints between the ventilation flue and the floor slab should be chiseled in advance, cleaned and cleaned after the formwork, and filled with C20 fine stone micro-expanded concrete.

6. The concrete surface at the joint should be about 3cm lower than the floor surface. After filling the concrete, water is stored on the surface of the concrete for maintenance.

7. After cleaning the foot position of the ventilation flue, make two times of 2mm thick 851 polyurethane waterproof coating 20cm high; Or pound a reinforced concrete water-retaining base surface 1 around the foot of the ventilation flue: cement mortar plastering, calendering, and water-retaining base surface plastering should be completed before the cement sand finishing layer on the floor floor. The steel bar needs to be reserved when pounding the fine stone concrete sealing.

8. Before plastering or decorating, the net should be hung around the periphery of the ventilation flue.

9, the joint between the two floors of the ventilation flue, the upper and lower sections of the ventilation flue joint surface should be coated with polymer cement slurry, and then the exposed part of the interface is wrapped with galvanized steel wire mesh, and the embedded steel plate of the upper and lower pipelines is welded with 6 steel bars.

10. After the ventilation flue is installed on the roof, the anti-backfill hood required by different series of products should be installed according to the design requirements.

The general family will install a range hood, where there is a range hood, there will be a flue installation, the installation of the flue is more important, otherwise there will be problems in the process of use, so it is better to look at some of the specifications for installing the flue, thenFlue installation specificationsWhat are the general ones? What are the precautions for flue installation? Let's introduce it to you.

1. Flue installation specifications.

1. The auxiliary flue must be retained.

Each kitchen has a flue, and at the same time, the flue is also divided into main and secondary, the main flue runs through the entire building, and the auxiliary flue is relatively independent. Generally, the oil smoke in the home will first go to the auxiliary flue, and then enter the main flue through the hole in the partition, so as to ensure that the oil smoke of each household is isolated. However, if the auxiliary flue is directly connected to the main flue, it will lead to the phenomenon of smoke pouring or string smoke due to low pressure.

2. Pay attention to the construction details.

First of all, it is important to choose the location where the range hood is installed. The shorter the pipe, the better. Some owners will stretch the pipe longer for the sake of aesthetics, so that after turning off the range hood, the pipe will also collect a lot of oil smoke that cannot be discharged, and then poured back indoors.

In addition, in order not to destroy the original main and auxiliary flues, the opening direction can not be changed at will, and must be played in the auxiliary flue.

3. Pay attention to safety in window smoke exhaust.

In order to avoid the problem of smoke stringing, some owners abandon the original flue and directly open a hole in the window to exhaust the smoke, which is okay, but there are a few points to be aware of. First of all, before opening a hole in the window or wall, be sure to get the consent of the property; Secondly, pay attention to safety issues, generally the end of the smoke exhaust pipe is made of metal, if the hole is too small, the metal heat transfer may make the glass burst, injuring pedestrians, and the smoke pipe leads to the window, and the strong north wind blowing will cause the smoke to back. It is good to extend the pipe and put it down, so that it can also prevent rainwater from flowing into the pipe when it rains and keep the wind out.

2. Precautions for flue installation.

1. The flue installation should be kept at a certain distance from combustible materials such as ceilings or furniture, and the distance should not be less than 15 cm. When installing the flue, it should be noted that the gap between the flue and the opening and rotating should not be sealed with cement or glue and other substances, so as not to be inconvenient for maintenance in the future.

2. The main function of the flue check valve is to prevent the smoke from blowing back to play a role in blocking, one side can normally remove the smoke, and the other end can prevent the smoke from blowing backwards to cause the smoke to back up. It has a unique pressure change and air pulling technology, which can make the air inlet generate static pressure or even negative pressure, which can not only easily meet the check function, but also fundamentally solve the stubborn diseases such as oil smoke backfilling and smoke crossing.

3. The exhaust port of the flue should be placed at a high point, not lower than the highest part of the water heater, otherwise it is likely to cause exhaust gas backfill. It is best to install a draft filter at the exhaust port to prevent backfill. After installing the pipeline, use fertilizer and soapy water at each connection to test whether there is air leakage.

Flue installation requires skills, so it is best for you to master some skills when installing, so what are the flue installation specifications and installation precautions, you have read the above introduction and also understood.

Flue, also known as exhaust duct, ventilation duct, residential exhaust duct, is a kind of pipe used for exhaust gas and exhaust gas. Residential flue is a vertical pipeline product used to exhaust kitchen smoke and bathroom waste, and is an important component of the common exhaust pipeline of residential kitchen and bathroom. Under normal circumstances, it is necessary to find a special person to install according to the installation requirements of the flue, if the worker does not install in accordance with the installation requirements of the flue, it is likely to have a great impact on the flue.

The specifications, installation position, height and direction of the air duct should meet the requirements of the design, and the effective cross-section of the interface should not be reduced during installation. The connection of the pipe should be tight and firm, and the thickness of the gasket should not be less than 3mm. The connection between the air duct and the brick and concrete air duct should be inserted along the wind direction and sealed measures.

Fourth, in the connection between the air duct and the fan, in case of bending, the guide vane should be installed to ensure the smooth flow of air.

The installation of the smoke pipe should be carried out in order from low to high, and when installing, the model and floor of the flue should be carefully checked, and the installation should be carried out according to the number and order of the flue.

In the process of installing the flue, joints should be made on the ground, and in order to prevent water leakage, the connection of the upper and lower pipes must be sealed with cement mortar, and the gap between the pipe and the ground must be filled with fine stone powder of C20. In addition, it is necessary to support the ventilation ducts on each floor.

When the flue is installed, the gap between the flue and the wall should be filled, if the gap of the flue is small, it must be painted in front of the flue, so that the flue will not seep smoke.

When installing the smoke trace middle channel, there can be no impurities in the flue, and there should be a covering device at the flue mouth, which can only be removed after the flue connector is installed. If the worker searches the mountain with a thin-walled cement mortar, it is necessary to lay a layer of iron sheet on it in advance, so that it can be pulled out when dismantling it later, so that the thin wall will not fall into the chimney.

The above is all the content of the flue installation specification, in order to prevent the improper installation of the flue and affect the normal use of the flue, please be sure to install it in strict accordance with the installation procedures of the flue. Hopefully, this article can provide you with some help.