electromagnetic sieve-Dahan Machinery

What is an Electromagnetic Sieve?

Electromagnetic Sieve is also a mechanical laboratory sieve, which drives stacked sieves and samples by shaking to achieve analysis and detection.

The Electromagnetic Sieve is an update or upgrade to the standard test sieve.

Electromagnetic Sieve uses an electromagnetic vibrator as the vibration source, with a vibration frequency of 3000 times/min. The sieve surface can generate high-frequency vibrations to promote the movement of sample particles, which can greatly improve the sieving efficiency of fine samples. Dry sieving can sieve to 20um (635 mesh), add negative pressure device, can dry sieve to 5um. Electromagnetic Sieve can hold 8 layers of test sieves (including the bottom of the sieve), and can precisely divide a sample into 2-9 particle size segments at the same time.

Advantages of Electromagnetic Sieve

1. Three-dimensional vibration action: vertical, horizontal and rotating, which can produce faster and more effective screening. Because the screen surface can vibrate up and down at high frequency, the material can be thrown out of the mesh, and the material rarely sticks to the mesh.

2. The digital microprocessor control panel is adjustable: the timer is 0-99 minutes, continuous or intermittent vibration action, and automatic shutdown can be timed (for fine material screening).

3. Up to 8 sieves: The electromagnetic sieve shaker can be placed with 8 layers of test sieves (including the sieve bottom), which can precisely separate a granular material into 2-7 particle size segments at the same time.

4. Platform operation: The control panel can be fixed on the wall or placed on the workbench.

What is the purpose of a Electromagnetic Sieve?

Electromagnetic sieve is a new type of test sieve, electromagnetic sieve shaker is a laboratory test sieve designed for ultrafine powder sieving detection on the basis of the original ordinary test sieve. The electromagnetic sieve has higher sieving accuracy than ordinary test sieves, which solves the problem that ultrafine powder is difficult to sieve.

Suitable Materials for Electromagnetic Sieve

Fine particles, metal powder, carbon powder, chemical powder, food powder, pharmaceutical powder, diamond powder,building materials, dyes, ceramics, rubber, paper, dry and wet powders, etc.

Applicable materials

Materials	Mesh	Materials	Mesh	Materials	Mesh
Worm dung	30 mesh	Soybeans	4-5 mesh	green beans	10 mesh
Rice	12-14 mesh	rice flour	30-40 mesh	Cornmeal	30-40 mesh
flour	50-60 mesh	Miscellaneous grains	40-50 mesh	Sesame Millet	22-24 mesh
Fried Chicken Burger Breaded	20-30 mesh	Mung bean flour	40-50 mesh	Sesame powder	40-50 mesh
Notoginseng powder	100-120 mesh	Pine pollen	100-120 mesh	Chinese medicine powder	40-50 mesh
Oral Chinese medicine powder	60-80 mesh	Traditional Chinese Medicine Mask	80-120 mesh	Pearl powder	120-150 mesh
Medicine residue	60-150 mesh	Soy milk	80-120 mesh	honey	80-120 mesh
Soup dregs	120-150 mesh	Tea water	Cooking oilh	120-150 mesh	150-200 mesh

How Does an Electromagnetic Sieve Work?

The electromagnetic sieve generates vibration through electromagnetic force. When the electromagnetic system is energized, the screen body produces high-frequency vibration, causing the material on the screen surface to move continuously and evenly.

The vibration frequency can be adjusted according to material characteristics, particle size, and production requirements. Different vibration frequencies may affect screening efficiency, throughput, and powder movement.

Pinciple of electromagnetic sieve shaker

Electromagnetic Sieve vs Traditional Vibrating Screen

Electromagnetic sieve is generally used for fine powder processing, while traditional vibrating screens are often used for larger particle materials and higher-capacity applications.

Item	Electromagnetic Sieve	Traditional Vibrating Screen
Vibration Type	Electromagnetic vibration	Motor-driven vibration
Screening Precision	Higher for fine & ultra-fine powder	Ordinary precision
Fine Mesh Screening	Fully suitable	Limited performance
Material Movement	Stable and uniform	Larger vibration amplitude
Mesh Blocking	Low blocking rate	Easy to block with fine powder
Ultra-Fine Powder	Ideal for processing	Poor adaptability
Vibration Frequency	Stepless adjustable	Fixed frequency / Limited adjustment

How to Choose an Electromagnetic Sieve?

Screen Mesh Size: Select a screen with the appropriate mesh size based on the material grading accuracy requirements. For fine and ultrafine powder sieving, a high-mesh screen is recommended to ensure optimal separation results.

Processing Capacity Requirements: Determine the screen diameter and overall machine configuration based on actual production output, balancing capacity and sieving efficiency.

Material Characteristics: Consider material moisture content, bulk density, particle size distribution, and flowability, as these characteristics directly affect sieving accuracy and screen clogging.

Screen Material: For the food and pharmaceutical industries, 304 or 316L stainless steel is preferred due to its corrosion resistance.

Installation Environment: Consider the workshop space and production line layout in advance when selecting a screen to ensure compatibility with on-site installation and assembly line integration.

Cleaning Requirements: Equipment in the food and pharmaceutical industries should have a simple structure for easy disassembly and cleaning. Material contact surfaces should be polished for convenient daily disinfection and maintenance.

Applications of Electromagnetic Sieve

Food Industry:In food production, screening equipment is commonly used to remove impurities and maintain uniform particle size before packaging or mixing processes.

Chemical Industry:Chemical powders such as resin powder, pigment powder, and additive powder may require fine screening during production.

Electromagnetic vibration can help improve powder movement on fine mesh screens.

Metal Powder Industry:Metal powder processing often requires accurate particle classification. Aluminum powder, copper powder, and alloy powders are commonly screened before further processing.

Battery Material Industry:Battery material production usually involves fine powder grading. Graphite powder and lithium battery materials often require stable vibration and fine mesh screening.

Multiple models available

Electromagnetic sieve shakers are available in a variety of models:

A059-01 Kit: Dimensions Sieve Ø 200mm-8"; 320x380x850mm; Weight approx 40kg.

A059-02 KIT: Dimensions sieve Ø200-250-300-315mm-8"-12"; 380x440x1080 mm; weight about 65 kg.

A059-03 KIT: Dimensions sieve Ø 200-250-300-315-350-400 mm - 8"-12"; 430x460x1150 mm; weight approx. 80 kg.

A059-04 Kit: Size Sieve Ø 200-250-300-315-400-450 mm - 8"-12"-18"; 480x500x1150 mm; Weight approx. 85 Kg.

Serial number	name		Unit	Value
1	Sieve surface diameter		mm	Φ200/100/75
2	Number of layers of screen surface		Layer	1——8
3	Number of swings		Times/Minutes	290
4	Round trip distance		mm	25
5	Number of round trips		Times/Minutes	290
6	Number of vibrations		Times/Minutes	3000
7	Amplitude		mm	0——3
8	Motor	Power	KW	0.37
8	Motor	Speed	Revolutions/Minutes	1400
9	Dimensions		mm	660X470X800
10	Weight of the whole machine		KG	105

Customer case

Customer site

Steps for usage

1. If you need to adjust the vibration amplitude, you can adjust the potentiometer knob to get different amplitudes. If you adjust the material spreading range, please adjust the motor eccentric block. The method is to adjust the length of M8 bolts or additional screws on the excitation block on the motor to obtain different excitation forces. Generally not adjusted.

2. Adjust the time according to the screening needs. The first two digits of the time relay on the left side of the front panel of the electromagnetic sieve are minutes and the last two digits are seconds. The timing can be adjusted within 0-99 minutes and 59 seconds as needed.

3. For the test sieve used in the electromagnetic sieve shaker, the bottom layer is lowered (non-porous sieve), and the sieve cover is placed on the top. The middle of the sieve bottom and sieve cover can be put into 1-7 layers of test sieves according to the requirements of the sieving granularity section, from top to bottom, from coarse to fine, and the materials that need to be screened are put on the top (also the coarsest screen) layer.

4. Put the test sieve into the equipment and lock the nuts on the top and both sides. The specific method is: first loosen the four locking nuts on the top and both sides of the standard vibrating screen, so that the two columns on both sides can fall freely on the test screen that has been placed, and then lock the two sides of the screen first. Tighten the nut, just lock the two nuts on the top of the screen machine. Note: The nuts on the top and both sides must be tightened. The tightening is loosened when the two nuts on the top of the screen machine are on both sides of the top, and then the top nuts are tightened after pressing on both sides.

5. After completing the above steps, turn on the green button on the right side of the front panel of the electromagnetic sieve. After a period of time for screening, when the time ends, the screen machine will automatically stop, or you can press the red button to end the screening. At the end of the screening, you can screen out the materials with multiple particle size segments you need at one time.