The use of electric centrifuge

The use of electric centrifuge

1, the working environment temperature of the electric centrifuge: 5-40 °C, relative humidity should not exceed 80%, no conductive dust, corrosive gases and so on.

2. The worktable should be level and stable to prevent vibration. The workroom should be clean, dry, and well ventilated.

3, before starting the machine should first wipe the cavity and rotor clean.

4. Before the work, the empty centrifuge tube should be placed evenly, and the machine should be run at the highest speed for 1-2 minutes. Normal operation can be performed without exception.

Centrifugal definition of electric centrifuge

Centrifugation is the use of the centrifugal force generated by high-speed rotation of the centrifuge rotor to accelerate the settling velocity of the particles in the liquid and separate the sedimentation coefficient and buoyancy density of the sample. Therefore, it is necessary to use a centrifuge to generate a strong centrifugal force in order to force these particles to overcome the diffusion and produce a settling motion.

Electric Centrifuge Features

The structure is scientific and reasonable, safe and reliable, easy to use, non-pollutant material, fast and effortless, new panel design, easy operation, quick start, and quick shutdown. It is the preferred equipment for medical and health, food, environmental protection, scientific research, and teaching.

1. The stainless steel porous technology is used to dry the drums. When used, the water can be thrown out unblocked.

2. Curl closing technology, because the sample in the tumbler will not be thrown out.

3, the external buckets are all made of stainless steel, and full welding technology is adopted, which greatly increases the overall service life of the centrifuge.

4. The motor adopts program-controlled technology to keep the rotational speed at a constant speed (without changes in load).

5, the motor has overheating protection device to ensure that the motor will not overheat and burn out the motor.

Electric centrifuge operating procedures and processing results

For quantification of general liquid fibers, place a piece of gauze or nylon mesh inside the centrifuge dehydration drum. Rotate the timer knob to select the dehydration time. The motor starts and the timer knob starts counting counterclockwise until it returns to zero. In this case, the machine automatically shuts down and removes the wet material. Weigh the dehydrated part of the wet slurry with the mass of 1% g for the g1, and put it in an oven at 105±2°C to dry to a constant weight. This is the absolute dry pulp (if baking to 4 hours) Then put it back in the drying box and dry it for 1 hour. Weighing twice before and after weighing less than five-thousandths is a constant weight. It is g2.

Calculate the water content: y= g1-g2 g1 × 100%

Dry volume: h = 100%-y

Take the dehydrated wet slurry equivalent to 2g of dry pulp sample: X= g1·2 g2

For the concentration of the slurry in each part of the papermaking industry net, take G g of slurry, collect all the wet pulp after dewatering by a centrifuge, and dry it to absolute dryness.

H=Gh

H—Absolute dry weight (G is the content)

H—dry density (100%- g1-g2 g1 × 100%)

Let the desired concentration be η

η= GH G ×100%

For the paper industry laboratory used for washing pulp. In order to remove the acid or alkali content from the slurry, the laboratory must thoroughly wash the slurry. It is convenient to use this machine to wash the slurry.

The method is to add the water to be washed and stir it into a fine nylon mesh dewatering cylinder.

Jinan Derek Instrument Co., Ltd.