Automated gypsum vacuum belt dewatering machine

Automated gypsum vacuum belt dewatering machineApplication field

power industry

In the wet desulfurization system of coal-fired power plants, the bottom slurry of the gypsum cyclone is subjected to secondary dehydration to generate gypsum with a moisture content of less than 10%, which is used as a cement retarder or building material.

Chemical and Pharmaceutical

Process solid-liquid separation of materials such as titanium dioxide, catalysts, and traditional Chinese medicine extracts to improve product purity and achieve resource recovery.

Mining and Metallurgy

Dehydration of copper and iron concentrates and dry discharge of tailings to reduce slurry volume and lower transportation and disposal costs.

Environmental Engineering

Dehydration of municipal sludge and electroplating waste to achieve reduction and harmless treatment.

Automated gypsum vacuum belt dewatering machineworking principle

Feed and preliminary filtration

The gypsum slurry is evenly spread on the moving filter cloth by the feeder, and the large solid particles settle first under the action of gravity, forming a filter cake layer with large gaps, reducing the subsequent filtration resistance.

Vacuum suction dehydration

After the vacuum box under the filter cloth is connected to the vacuum system, a filtration zone is formed. The filtrate passes through the filter cloth and the rubber belt groove and flows into the vacuum chamber, and solid particles are trapped to form a filter cake.

Washing and drying by suction

The filter cake enters the washing area with the tape and is further washed by a multi-stage spray device to reduce the impurity content; Subsequently, it enters the drying zone and vacuum suction reduces the moisture content of the filter cake.

Unloading and filter cloth regeneration

When the filter cake reaches the discharge end, it is peeled off and discharged by a scraper; After the filter cloth is regenerated by the cleaning device, it enters the filtering area again through the correction and tensioning device, and starts the next cycle.

Precautions for use

Operating standards:

Untrained personnel are strictly prohibited from operating the equipment. Before starting, it is necessary to check the tension of the filter belt, the sealing of the vacuum system, and the lubricating oil level.

Pay close attention to parameters such as vacuum degree and filter belt speed during operation, and immediately shut down for troubleshooting in case of abnormalities.

Maintenance and upkeep:

Regularly clean the filter cloth and filter belt to prevent blockage; Replace worn parts (such as friction bands and scraper blades) in a timely manner.

Inspect key components such as vacuum pumps and drive motors quarterly to ensure stable operation.

Safety protection

Cut off the power supply and hang warning signs during maintenance to prevent accidental start-up; Wear protective gloves and goggles when operating rotating parts.

Maintain good ventilation around the equipment to avoid the accumulation of flammable and explosive gases.

Environmental control:

Strengthen equipment rust prevention treatment in humid environments and regularly check the insulation performance of electrical components.

In winter, it is necessary to drain the accumulated water in the pipeline to prevent freezing and cracking; Strengthen heat dissipation in high temperature environments.