The production of cow dung liquid biofertilizer relies on several essential pieces of equipment. Here is a detailed, technical overview of the main components, focusing on solid - liquid separators, fermentation tanks, and other crucial tools.

1. Solid - Liquid Separator

1.1 Screw Press Separator

The screw press separator is a widely used device in this process. It features a screw conveyor within a tapered cylindrical screen. As cow dung slurry enters the machine, the screw rotates at a speed of 10 - 30 revolutions per minute, gradually compressing the material. The pressure exerted forces the liquid through the screen pores, while the solid residue is discharged at the narrow end. With a processing capacity of 2 - 5 tons per hour, it can reduce the solid content of cow dung from about 20% to 30 - 40%.

1.2 Centrifugal Separator

Centrifugal separators utilize high - speed rotation to achieve separation. These machines typically operate at 3000 - 5000 revolutions per minute. The cow dung mixture is fed into the rotating drum, and the centrifugal force separates the denser solids from the lighter liquid. The separated liquid is collected through outlets, while the solids adhere to the drum wall and are periodically removed. They can handle up to 3 - 6 cubic meters of slurry per hour, offering high - efficiency separation. Click here to get more!

2. Cow Dung Liquid Fermentation Tank

2.1 Design and Structure

Fermentation tanks are usually constructed from stainless steel or FRP (Fiberglass Reinforced Plastic) for corrosion resistance. They come in various sizes, with capacities ranging from 50 to 500 cubic meters. The tanks are equipped with an airtight lid to maintain anaerobic conditions, which are essential for the fermentation process. Temperature - control systems are integrated, capable of maintaining the internal temperature between 35 - 45°C, an optimal range for microbial activity.

2.2 Agitation System

Inside the fermentation tank, an agitation system ensures uniform mixing of the cow dung liquid. Mechanical agitators, driven by electric motors, rotate at 10 - 20 revolutions per minute. This continuous stirring promotes the contact of organic matter with microorganisms, accelerating the decomposition process and preventing sedimentation.

3. Mixing Equipment

3.1 Horizontal Axis Mixer

Horizontal axis mixers are used to blend cow dung with other additives, such as microbial inoculants or nutrients. These mixers consist of a horizontal cylindrical tank with internal paddles. The paddles rotate at 20 - 40 revolutions per minute, thoroughly mixing the components within 5 - 10 minutes. They have a mixing capacity of 1 - 3 cubic meters per batch, ensuring consistent composition of the fermentation mixture.

4. Pumping Equipment

4.1 Diaphragm Pump

Diaphragm pumps are commonly employed to transfer cow dung slurry and liquid biofertilizer. These pumps use a reciprocating diaphragm to create suction and pressure. With a flow rate of 3 - 8 cubic meters per hour, they can handle viscous materials without causing damage to the components. They are also resistant to abrasion, making them suitable for the often - gritty cow dung slurry.

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In conclusion, these key pieces of equipment play indispensable roles in cow manure liquid biofertilizer production, each with its unique design and functionality to ensure efficient processing. Welcome to visit : https://www.biofertilizerproduction.com/product/liquid-biofertilizer-production-technology/