What is the function of the one-way valve device of Plastic Emulsion Pump?

1. Basic structure of one-way valve device
The one-way valve device of Plastic Emulsion Pump usually includes valve disc, valve seat, spring and other components. The valve disc is a key component for controlling the flow of fluid. It can automatically open or close under the action of fluid; the valve seat cooperates with the valve disc to form a sealing structure to prevent fluid leakage; the spring is used to assist the opening and closing of the valve disc to ensure the sensitivity and reliability of the one-way valve.

2. Working principle of one-way valve device
The working principle of the one-way valve device mainly depends on the pressure difference of the fluid and the automatic switching characteristics of the valve disc. When the pressing head of the Pump is pressed, the pressure in the pump body decreases, and the emulsion in the suction tube is sucked into the pump body under the action of the pressure difference. At this time, the valve disc of the first one-way valve (usually located between the pressing head and the main column) is pushed open, allowing the emulsion to enter the pump body. At the same time, the valve disc of the second one-way valve (usually located between the plastic spring and the pump body inlet) remains closed to prevent the emulsion in the pump body from flowing back.

When the pressing head is released, the plastic spring returns to its original shape, pushing the pull rod and the plug upward. At this time, the pressure in the pump body increases, and the emulsion is discharged under the action of the pressure difference. At this time, the valve flap of the second one-way valve is pushed open, allowing the emulsion in the pump body to be discharged through the outlet. At the same time, the valve flap of the first one-way valve is closed to prevent the emulsion from flowing back from the suction tube.

3. The main function of the one-way valve device
Ensure the one-way flow of fluid: The most significant function of the one-way valve device is to ensure the one-way flow of the emulsion in the pump body. This avoids the backflow and mixing of the emulsion inside the pump body, ensuring the purity and quality of the product. At the same time, the opening and closing characteristics of the one-way valve also ensure the continuity and stability of the emulsion during the pumping process.
Prevent leakage and pollution: The sealing structure of the one-way valve device can effectively prevent the leakage of the emulsion, avoiding product waste and environmental pollution. In addition, the one-way valve can also prevent external impurities and air from entering the pump body, ensuring the hygiene and safety of the product.
Improve pumping efficiency: The automatic switching characteristics of the one-way valve device enable the emulsion to flow quickly and continuously during the pumping process, improving the pumping efficiency. At the same time, the sensitivity and reliability of the one-way valve also ensure the stability and reliability of the pumping process, reducing failures and maintenance costs.
Protect the pump body and other components: The one-way valve device can also protect the pump body and other components. When the internal pressure of the pump body increases abnormally, the one-way valve can automatically close to prevent the emulsion from flowing back and impacting the pump body and other components, extending the service life of the pump.
IV. Maintenance and care of the one-way valve device
In order to ensure the normal operation of the Plastic Emulsion Pump one-way valve device, regular maintenance and care are required. Here are some suggestions:

Regularly check the sealing of the one-way valve: Regularly check whether the valve disc and valve seat of the one-way valve are worn or damaged to ensure that the sealing between them is good. If wear or damage is found, a new one-way valve device should be replaced in time.
Clean the one-way valve device: Clean the one-way valve device regularly to remove dirt and impurities attached to the valve disc and valve seat. This helps maintain the sensitivity and reliability of the one-way valve and improves pumping efficiency.
Check the elasticity of the spring: Check the elasticity of the spring regularly to see if it is weakened or broken. If the spring loses its elasticity or breaks, it should be replaced with a new spring in time to ensure the normal opening and closing of the one-way valve.
Avoid excessive pressing and impact: When using the Plastic Emulsion Pump, avoid excessive pressing and impacting the pressing head to avoid damage to the one-way valve device and other components. At the same time, care should be taken to avoid excessive pressure or vibration on the pump body to extend its service life.