AELCThe self-priming device is based on the principle of jet flow,AELCType andAELBThe self-priming device is based on GermanyKSBCompany transfers to GermanyVATECMade with advanced technology by mechanical manufacturing factories. Its performance parameters, structure, installation dimensions, testing requirements, and main component materials are all in accordance with German standardsVATECRegulations of mechanical manufacturing plants.

AELCThe self-priming device relies on a gas injection device to achieve suction. The device is small in size, light in weight, and easy to use. It can be installed on the pump frame and connected to the pump's suction port, giving the pump self-priming ability and ensuring that it automatically starts when the pump is filled with water. And automatically turn off the self-priming device after the pump is started. Therefore, it is particularly suitable for the configuration and use of marine centrifugal pumps, and can also be used on other industrial pumps with similar conditions. Easy to achieve automated control.

2、 Performance specifications and materials

AELCThere are three specifications of self-priming devices:

AELCType andAELBThere are three specifications for each self-priming device. approachAELC33、AELC43、AELC53、AELB33、AELB43, andAELB53type Example:AELC-0.3The extraction volume is0.3m³/min

The installation dimensions of the three self-priming devices are the same, and users can choose the specifications that are suitable for their own use based on their performance. All materials of the self-priming device are made of corrosion-resistant materials, and the main component materials are shell Body:ZCuZn16Si4
Float chamber:ZCuZn16Si4
Power nozzle: reinforced nylon
Mixing nozzle: reinforced nylon

3、 Structure

AELCThe self-priming device is composed of a spray body, joints, pressure switch components, solenoid valves, pneumatic valve components, time circuit breakers, intermediate relays, and other components assembled into an electrical box, which is easy to install and use. The appearance, installation dimensions, connection method, and electrical circuit diagram of the device are shown in the attached figure:

4、 Action process

Before starting the pump, the outlet valve of the pump must be closed (no air leakage is allowed in the pipeline) and the inlet valve must be opened. Press the button to turn on the power, and the solenoid valve will automatically open. Due to the action of compressed air, the pneumatic valve will also open at the same time, and the self-priming device will start to extract air from the pump, gradually forming a vacuum. Evacuation time relay control (depending on the air storage capacity of the pump and suction pipeline, the action time of the time relay is set, and the factory time is set to2min）After the pumping is completed, the time relay commands the motor to start automatically, and the pump starts working (at this time, the pump outlet valve is opened). Under the pressure of the pump outlet, the pressure switch is activated, causing the electromagnetic valve to close and the pneumatic valve to close, and the self-priming device stops working. When the outlet pressure of the pump is lower than the opening point pressure of the pressure switch, the pressure switch will turn on the solenoid valve, and the self-priming device will work to keep the pump running normally.

The running time of the pump or when the pump needs to stop can be controlled by an automatic stop device to stop both the pump and the self-priming device at the same time.

5、 Instructions for use

1Pressure range: Use the outlet pressure of the pump to operate the pressure switch to turn on and off the self-priming device. Generally, adjust the pressure switch to the lowest point of the normal working pressure range of the pump during use.

2Voltage used for self-priming device electrical components220V、50Hzperhaps60Hz. Power40VAInsulation levelIP55.

3The use of self-priming devices must have a compressed air source and a pressure range for the compressed air0.5-0.7PMaThe consumption of compressed air is0.07m³/min-0.16m³/min(In)0.6PMaUnder certain circumstances.

4The suction port on the pump system must be set at the highest point above the pump casing and inlet pipeline, and the self-priming device should be higher than the suction port300Millimeters.

5If the pump cannot drain normally after starting, the power should be disconnected, the self-priming device, pump, and pump pipeline should be inspected, and the fault should be eliminated before restarting.

Note:1The exhaust port adoptsφ14×2(Diameter)φ10ofPVCWoven rubber hose connection, clamped at both ends with stainless steel clamps, connected at the highest point of the pump body.

2The high-pressure water interface adoptsφ6×1(Diameter)φ4）The copper pipe is flared at both ends and connected to the pump outlet.

Note: The starter box is designed for direct starting and is suitable for starting small power motors. High power motors should choose the step-down starting type.

When the starter box is not ordered, it is only for the self-priming device part. This diagram is for reference only.