二、Equipment principle and characteristics

Lime incoming method: canned powder is transported by the compressed air provided by the transport vehicle through the feeding pipe and sent to the silo. The lime stored in the silo is conveyed to the dispensing tank by the vibrating silo top unloader, star unloader, and screw conveyor. At the same time, the inlet solenoid valve and the dispensing tank mixer are turned on to prepare the dry powder into a certain concentration of liquid medicine; The prepared medicinal solution is added to the dosing point through the dispensing tube of the dispensing tank by the dosing pump.

1. Large capacity storage: The silo can be designed with different capacities according to demand to meet the storage needs of large-scale projects for lime and avoid frequent replenishment.

2. Automated operation: Manage the storage and transportation of lime through an automatic control system, reduce manual operations, and achieve intelligent feeding.

3. Safety and Environmental Protection: Equipped with professional dust prevention devices, effectively controlling the leakage of lime dust, reducing environmental pollution, and meeting environmental standards.

4. Efficient and stable: The vibration and flow aid design ensures that materials are not blocked, and the quantitative feeding system ensures the stability of material supply, improving processing efficiency.

5. Easy to maintain: The structural design is reasonable, the operation is simple, and the maintenance and cleaning of the silo are easy to carry out, reducing the maintenance cost of the equipment.

四、Working principle

Lime is transported to the silo through the feeding pipe by the compressed air provided by the transport vehicle; When the mixture of powder and compressed air enters the silo, it passes through the top dust collector and the air is discharged. The filter bag of the top dust collector is cleaned by the cleaning device and the powder is shaken into the silo.

The electric control cabinet is equipped with alarm functions for "high material level" and "low material level" to enable operators to grasp the material level situation; The "high" and "low" levels of dry chemicals in the silo not only need to be indicated by indicator lights and buzzers on the control cabinet panel, but also output alarm signals to the central control room PLC.

When the material level in the silo reaches the set middle position, notify the transport vehicle to deliver the material, connect the feed pipe, start the transport vehicle's air pump, and pump the dry chemical into the silo. Simultaneously activate the cleaning device on the dust collector.

When the material level in the silo reaches the set high level, an audible and visual alarm will be triggered, and the alarm signal will be output to the central control room PLC; At this point, turn off the air pump of the transport vehicle, disconnect the feeding pipe, and drive the transport vehicle away. Simultaneously delay by 5 minutes to turn off the cleaning device on the top dust collector of the warehouse (adjustable time setting).

When the material level in the silo reaches the set low level, an audible and visual alarm will be triggered, and the alarm signal will be output to the central control room PLC; If the dry powder is not replenished to the silo after a delay of 30 minutes, the PLC will shut down the entire system (adjustable time setting).

The dry chemicals stored in the silo are transported to the dispensing tank by vibrating top unloaders, star shaped unloaders, and screw conveyors. At the same time, the inlet solenoid valve and dispensing tank mixer are opened to prepare the dry powder into a certain concentration of liquid medicine.

The prepared medication is waiting for the dosing pump to add it to the dosing point.

Under normal working conditions, the dosing pump continuously extracts medication from the storage tank; When the liquid level in the storage tank is at the set low level, the liquid level gauge sends a signal to the PLC, which sends instructions to start the vibration bin bottom unloader, star unloader, and screw conveyor. At the same time, the mixing tank mixer is started and the inlet solenoid valve is opened to allow water to enter. The dispensing process begins; When the liquid level in the storage tank gradually rises to a high level, the liquid level gauge sends a signal to the PLC, which sends instructions to stop the vibration bin bottom unloader, star unloader, and screw conveyor. At the same time, the mixing tank mixer is stopped and the water inlet solenoid valve is closed for water inlet, and the dispensing process stops; This work cycle continues indefinitely.