What is a one-way valve? Check valve is divided into two types of general check valve and check valve. The role of the general one-way valve is to allow only one-way flow through the reverse can not flow, also known as check valve. Check valve also play the role of liquid return, but can also be used to control the pressure of the hydraulic circuit will open the one-way valve in order to achieve conditional reverse conduction, lift the anti-stop. China's current production of general check valve tube (straight-through) and plate (angle-type). Tubular check valve with tube connection. Plate check valve with plate connection. The working principle of the tube check valve is: when the pressure oil flows in from the oil inlet A, overcome the spring force, open the valve core 2 and flow out from the oil outlet B. When the liquid flow is reversed, Under the action of the oil, the cone of the valve core is pressed against the valve seat of the valve body 1, so that the liquid flow can not pass through. The working principle of the plate check valve is basically the same as that of the pipe. The difference is that the oil flows directly to the oil outlet B after opening the valve core without passing through the center hole of the valve core. Graphic symbol of one-way valve. The characteristics of the two types of one-way valves are as follows: the plate check valve has the advantages of small resistance, stable operation and easy replacement of springs; the small size and simple structure of the check valve are easy to produce vibration and noise. Therefore, when the high-pressure large flow plate check valve, the flow is smaller, the pressure can be used when the valve spool valve. The check valve spring is mainly used to overcome the friction and inertia of the spool. In order to make one-way valve work sensitive and reliable, the spring stiffness should be small, so as to avoid excessive pressure drop when the flow through the one-way valve. General check valve opening pressure of 35 ~ 50 kPa. When all flow through the check valve, the pressure loss should generally not exceed 300 kPa. Read related articles hydraulic mechanism to reduce the impact of hydraulic shock method of hazardous liquids flow through the gap and constant ideal liquid flow cavitation and harm Author: Shengzhou Wei Delong Pumps XHB rotary piston
Pump, XHB rotor pump Widely used in oil depots, oil, unloading, cleaning the ideal pump, but also sewage treatment, filter press dedicated pump. Copyright: Reprinted "What is a one-way valve?" The article must be linked to indicate the author and the original source and the statement, if you have any questions about this article, please submit to the author, will be dealt with the first time.
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