Explain the classification and principle analysis of check valves
1. The check valve manufacturer describes the function of the check valve
The check valve is also called the stop valve, one-way valve, one-way valve or check valve. Its function is to ensure the directional distribution and movement of the medium in the pipeline, and it is impossible to cause diversion.
The closing of the check valve is to open and close automatically by virtue of the strength of the media movement. The check valve is a fully automatic valve equipment. The check valve only allows media to be used in pipelines that move at an angle to prevent media shunting. Its application area is extensive, and it can be used for large and small calibers, various media and ultra-high pressure systems of power stations.
2. The check valve manufacturer explains the principle of the check valve
The opening of the check valve refers to the opening of the valve disc by relying on the positive flow of the medium. The same principle is that the medium flows back to facilitate the closure of the valve flap. Check valves are also known as check valves, check valves, reverse flow valves and back pressure valves. Most of them are automatic valves, and their main function is to prevent the backflow of the medium, the reversal of the pump and the drive motor and the leakage of the container medium. At the same time, it is also used for safety protection in auxiliary systems that may increase the pressure above the system pressure.
3. Check valve manufacturers share the classification of check valves
The check valve is mainly used to prevent the backflow of the medium in the pipeline, and the bottom valve and duckbill valve are also check valve categories.
There are three types of check valves:
1. The lifting type is divided into two categories: vertical and horizontal. The lift-type structure moves along the axis.
Example: 1. Lifting mute check valve is used on pipelines with high quality requirements for water supply and drainage projects; at the same time, it can be installed at the pump outlet and requires relatively high pressure (PN2.5Mpa) in the pipeline network, which is a waterproof impact stopper. An important product for return valves.
2 Lifting muffler check valve is suitable for water supply and drainage system and pump outlet of high-rise buildings, not suitable for sewage pipeline field.
3 Horizontal check valves are suitable for submersible, drainage, sewage pumps, especially sewage and sludge systems.
The rotating structure is divided into single-lobe, double-lobe and multi-lobe. The selected structure is rotated based on the center of gravity.
Example: 1 Select the rubber check valve to be used in the urban water pipe network system, which is not suitable for the sewage pipeline with a large amount of sediment.
2. Rotary single flap check valve has a wide range of use and can be installed on pipelines such as water supply and drainage, petroleum, chemical, metallurgy, industry, etc., which is a suitable occasion for space constraints.
The 3-disc structure is a straight-through type.