1 check valve is what kind of valve, what is the role
Check valve is a special valve, its main role is to prevent the backflow of fluid, with good airtight performance. Introduction to the role and working principle of the check valve.
1, the role of the check valve
1. Prevent fluid backflow
The main role of the check valve is to prevent the backflow of fluids, which can prevent the fluid from entering the pipeline should not enter. Check valves are very common in atmospheric pressure pipeline network, it can prevent excessive pressure leading to the backflow of fluid in the pipeline, so as to avoid equipment damage.
2. Good airtightness
Check valves have good airtightness, which prevents compressed air from escaping, making the system more economical and safer. Check valves can also be used to block impurities and other fluids and maintain system balance.
Second, the working principle of the check valve
I. Principle
The working principle of the check valve is to use the principle of fluid flow dynamics. When the pressure changes, the fluid in and out of the check valve will be affected. When the fluid flows to the check valve, the check valve will automatically open; when the pressure changes, the check valve will automatically close, thus preventing the fluid from flowing backward.
2. Structure
The structure of the check valve can be divided into two main categories: one is the spherical check valve, whose door is spherical and can be opened or closed automatically; the other is the disc check valve, whose door is round and the shape of the valve flap can prevent backflow according to the pressure of the fluid.
In short, the check valve is a kind of prevent fluid backflow as the main role, has a good sealing performance of the special valve. Its working principle is to utilize the principle of fluid flow dynamics. The valve will be affected. The structure of check valve is divided into ball check valve and disk check valve. The main role of the check valve is to prevent fluid backflow to ensure the normal flow of fluid, save energy and protect equipment safety.