SH type lime silo feeding system

1、 Equipment principle and characteristics

Lime incoming method: canned powder, transported by compressed air from the transport vehicle through the feeding pipe, and sent to the silo (20m33-100m3); The lime stored in the silo is transported to the dispensing tank by a vibrating silo top unloader, a star shaped unloader, and a 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. Convenient feeding and discharging;

2. No overflow dust, improve working environment;

3. PLC automatic control achieves automation.

2、 Equipment structure

Lime storage system

It consists of a feed pipe, a top dust collector, a pressure vacuum release valve, a silo, a vibrating bottom unloader, a manual plug valve, a star shaped unloader, a screw conveyor, a top platform and guardrail, a steel ladder, and soft connections. The top dust collector, vibrating discharge hopper, star shaped discharge device, screw conveyor, pressure relief valve, and level gauge are all well-known brands WAN.

Dissolving system: composed of inlet pipeline, dissolving tank, dissolving tank mixer, dosing tank, and dosing tank mixer.

Drug storage system: composed of a drug storage tank and a drug storage tank mixer.

Control system: composed of an electrical control cabinet, a level gauge, and a frequency converter.

3、 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 dust collector on the top of the silo and the air is discharged

The filter bag of the dust collector is cleaned by oscillation of the cleaning device, and the powder is vibrated and dropped into the silo.

Electric control cabinet settings; High material level; And“ Low material level; Alarm function to enable operators to grasp the material level situation; Dry chemical material level in the silo; High position; And“ Low level; Not only in

The indicator lights on the control cabinet panel display and the buzzer sound an alarm, and the alarm signal is output 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 start the dust collector 

Cleaning device.

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 open the transport vehicle

Let's go; 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

Close 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 medicine storage tank is at the set low level, the liquid level gauge sends a signal to the PLC, and the PLC sends an instruction to start Vibration bin bottom unloader, star shaped unloader, and screw conveyor, while starting the mixing tank mixer and opening the inlet solenoid valve 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.