Is the countercurrent on the second floor fake? A complete solution for two-layer anti-reflux

In daily life, you may often encounter problems related to sewers. When buying a house, friends often hear others say that the second floor is prone to rebellion, and it is best not to buy the second floor. Some people say that the second floor is almost rebellious now. So, is the backflow prevention on the second floor fake? What are the complete solutions to prevent reflux on the second floor? Learn about it with us through today's article!

Is the rebellion on the second floor fake?

1, in fact, this phenomenon is relatively rare. If there is a blockage, the water in the underground well will be poured back to the outdoor ground. This design is to prevent indoor waterproofing. If there is a phenomenon of anti-water, call the property to find a roll, and then dredge the company.

2. The first floor is an independent sewer, and the water on the first floor is low or even no pressure. On the second floor, it is estimated that the sewer pipe outside the building can be ejected from the manhole cover, so it is not easy to block, because the first floor is low and the second floor is one floor higher than the first floor. The common ones above the second floor are relatively easy to rebel. Residential drainage is generally gravity drainage. Dirty water is first discharged into the drainage riser from the sanitary ware, then into the horizontal drainage pipe, and finally into the outdoor drainage inspection well.

3. In general, the drainage speed of the drainage riser is higher than that of the horizontal main pipe. After the sewage is discharged to the bottom of the drainage riser, it will be transferred to the horizontal main pipe, causing instantaneous blockage and forming a short-term positive pressure water column at the bottom of the drainage riser. If the hydraulic conditions are not good, for example, two 45-degree elbows are not used when the drainage riser is connected with the horizontal main pipe, the horizontal main pipe has a small diameter and a small slope, or the pressure water column is relatively high. When the positive pressure water column is higher than the sanitary ware of the ground floor building, dirty water will overflow from the sanitary ware of the ground floor building, which is what we often call sewer anti-water.

4. The reason of backflow is probably that there is a blockage under the main sewage pipe. Once the sewage is not discharged smoothly, the sewage will turn to the nearest outlet. There is no way to deal with this situation, only to dredge the pipeline company. If you live on the second floor, but the water from the sewer turns into your home, it means that the pipes below the second floor are blocked. This kind of blockage is the blockage of the main pipeline, that is, the main sewer from the first floor to the seventh floor is blocked. The location of the blockage is generally from the manhole cover to the 90-degree elbow below the first floor, so there will be more sewage backflow on the second floor.

A complete solution to prevent backflow on the second floor

1. The opening and closing parts of the check valve are automatically opened or closed by the flow and force of the medium to prevent the medium from flowing backwards. This valve is called a check valve. Check valve is an automatic valve, which is mainly used in pipelines with single medium flow, allowing only one-way medium flow to prevent accidents. So it is also called one-way valve and check valve. The automatic closing of the pipeline waterproof valve has the function of non-return, which solves the problem of sewer waterproof.

2. According to the installation drawings, connect the ball valve with the sewer pipe first, and then connect the check valve without glue. Both ends of the double-joint ball valve can be unscrewed, and the valve cover of the check valve can also be unscrewed. These positions can be unscrewed, which is convenient for later maintenance and cleaning, and can prolong the service life on the premise of long-term convenience.

3. After the check valve is spliced, take it to the launching place for comparison. First, choose a suitable angle in space, which is not sticky with water. A suit is a loose part and can be adjusted according to your actual needs. ) Check valves should be installed horizontally and vertically, and small sewer pipes should be vertical. Just use the elbow of the check valve set to change the level directly.

4. Check that there is no problem in the installation space, and then glue it. Stick the socket immediately after applying glue. Pvc water supply glue is a quick-drying accessory, which can't be pulled out after being glued. If it is wrong, replace the attachment. For those water purifiers and dishwashers, tee joints are installed at the end to carry out centralized drainage, so that the platform will not be messy and prevent overflow. If the check valve group is installed at a distance from the lower cabinet board, the things below should be taken down.

Is the backflow on the second floor fake? The overall anti-reflux solution on the second floor brought you here. There are many ways to solve the problem of sewer backflow. More details can continue to follow us.