How to choose a quantitative weighing and packaging machine for nutrient soil

When choosing a quantitative weighing and packaging machine for nutrient soil, factors such as material characteristics, production capacity requirements, precision requirements, degree of automation and budget should be comprehensively considered. The following is a comprehensive and step-by-step purchasing guide provided by Zhengzhou Hanke Machinery for you:

I. Clarify the characteristics of the nutrient soil

Nutrient soil is usually composed of peat soil, humus soil, perlite, vermiculite, organic fertilizer, etc. Before purchasing, it is necessary to confirm:

1. Particle size

Fine powder (such as peat soil) → Prone to dust, requires closed feeding (screw or belt).

Containing particles (such as perlite/vermiculite) → Anti-breakage design is required (low vibration and low drop).

2. Humidity

Drying (moisture content < 10%) → Optional bucket-less type.

Damp (moisture content > 15%) → Equipped with bucket type + arch-breaking device (anti-sticking).

3. Stickiness

For those with a high content of organic fertilizer or humus, a hopper type is preferred. The inner wall of the hopper needs to be polished or lined with polytetrafluoroethylene (anti-sticking).

Second, determine the packaging specifications and production capacity

1. Weight per bag

Small packages (1-5kg) : High precision (±5-10g). It is recommended to choose load cell type (such as electronic scale type).

Large packaging (10-50kg) : Conventional accuracy (±0.2% - 0.5%), with a bucket weighing type available as an option.

2. Capacity demand:

< 500 bags per hour: Single-head packaging machine (such as DC-50 type).

> 800 bags per hour: Double-head parallel or assembly line (with an automatic bag-feeding machine).

Iii. Select the type of packaging machine

Type: Applicable Scenarios: Advantages: Disadvantages

No spiral type, dry and well-flowing nutrient soil, fast speed, less residue, sensitive to humidity, prone to clogging

The bucket-weighing type is suitable for nutrient soil with high viscosity and high humidity. It has high precision and strong adaptability, but the speed is relatively slow and the hopper needs to be cleaned

Electronic scale cup-type, small packaging (1-5kg), high-precision requirement, accuracy ±1g, suitable for high-end products, low production capacity (< 200 bags per hour)

Belt metering type: lightweight nutrient soil containing fibers (such as coconut coir); anti-breakage, suitable for loose materials; relatively low accuracy (±1% to 2%)

Iv. Key Configurations and Functions

1. Weighing system

Sensor brand, anti-vibration design

2. Feeding mechanism:

Double screw feeding (coarse and fine stages) → Increase speed and accuracy.

Vibration discharging assistance → For clayey soil.

3. Material anti-corrosion:

The contact parts are made of 304 stainless steel. In highly corrosive environments, 316L stainless steel is selected.

4. Automated expansion

Automatic bag loading, heat sealing and coding functions → Reduce labor costs.

PLC control + touch screen → Can store multiple formula parameters (such as different packaging specifications).

V. Brand and After-sales Service

1. Domestic brands

High cost performance: Zhengzhou Hanke Machinery (suitable for small and medium-sized factories, price 50,000 to 150,000 yuan).

2. After-sales support

Confirm whether the manufacturer provides installation and commissioning, operation training, and local maintenance service points.

Through the above steps, a suitable nutrient soil packaging machine for production needs can be matched, taking into account both efficiency and cost. When users install equipment, Zhengzhou Hanke Machinery will dispatch professional engineers to the site to guide the installation and train the operation until the users can operate independently. They will also train the performance of the equipment, basic operation methods, and troubleshooting to make the users' operation more worry-free. In case of any equipment failure in the later stage, the manufacturer is always on standby and will respond quickly within a short time, arranging dedicated personnel to solve the problem on-site.