Circular Sieve

Working principle of circular sieve

Circular sieve uses a vertical vibration motor as the excitation source. The eccentric hammers at the upper and lower ends of the vibration motor convert the rotary motion into horizontal, vertical and inclined three-dimensional motion, and transmit it to the screen surface of the rotary vibrating screen. According to different screening requirements, the material Through 1-5 layers of screens with different mesh numbers, during this process, the cleaning devices located under the screens of each layer continuously hit the screens, so that the materials can be sieved smoothly, effectively avoiding the problem of material blockage, and materials with different mesh numbers pass through. The screens with the corresponding meshes of each layer are discharged through the outlet set at each layer to realize sieving or filtration.

Benefits of our circular sieve

1. It can be used for safe screening to remove foreign matter, separation process of solid in liquid, separation of different particle sizes in the same product, etc.

2. The screening can reach 500 mesh, providing accurate particle size, and installing a professional screen cleaning system to easily solve the problem of screen blockage.

3. The product can be classified into 6 or less parts of different sizes to achieve uniform particle size distribution.

4. Automatically process the impurities and coarse materials after screening, saving labor. After screening, it can automatically enter the next round of screening work, continuous operation.

5. Quick and easy disassembly without tools, all contact parts can be fully cleaned.

6. Noise levels are typically below 65 dBA.

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Technical parameters

Available in the following models: 16″ (Ø 400 mm) – 24″ (Ø 600 mm) – 30″ (Ø 800 m) – 36″ (Ø 1000 mm) – 48″ (Ø 1200 mm) – 60″ (Ø 1500 mm) – 72″ (Ø 1800 mm) – 90″ (Ø 2200 mm).

Model	Diameter (mm)	Feeding Size (mm)	Frequency (RPM)	Layers	Power (kw)	Capacity (kg/h）
DH-400	400	<10	<1500	1-5	0.18	100
DH-600	600				0.25	200
DH-800	800				0.55	500
DH-1000	1000				0.75	800
DH-1200	1200				1.1	1200
DH-1500	1500				1.5	1800
DH-1800	1800				2.2	2000

Dimension of circular sieve

Model	A	B	C	D	E	F	G	K	M	N	Q/2	Full Height
												1 layer	2 layers	3 layers
DH-400	Φ460	Φ100	Φ460	300	400	500	700	Φ80	Φ400	4-Φ11	310	620	720	820
DH-600	Φ660	Φ150	Φ530	340	460	500	700	Φ100	Φ475	4-Φ11	400	620	720	820
DH-800	Φ800	Φ200	Φ680	370	490	610	730	Φ150	Φ630	4-Φ13	540	710	830	950
DH-1000	Φ960	Φ230	Φ800	420	540	660	780	Φ150	Φ750	4-Φ13	640	760	880	1000
DH-1200	Φ1160	Φ250	Φ985	560	680	800	920	Φ150	Φ925	4-Φ13	750	900	1040	1180
DH-1500	Φ1500	Φ250	Φ128	580	740	900	1060	Φ200	Φ1200	4-Φ17	930	1140	1330	1620
DH-1800	Φ1800	Φ350	Φ190	1090	1250	1410	1570	Φ200	Φ1820	4-Φ17	1180	1504	1664	1824
DH-2000	Φ2000	Φ350	Φ210	1090	1250	1410	1570	Φ200	Φ2020	4-Φ17	1360	1514	1674	1834

Circular sieve customized models and applications

Picture
Application	It can filter solid and liquid or carry out size classification and impurity removal of dry material	Add ultrasonic assisted net cleaning device, which is conducive to the screening of ultra-fine and viscous materials and solves the problem of net blocking	The screen frame is increased and the feeding port is enlarged to prevent the material from splashing and easy to observe the screen.	The gate type design can prolong the screening time, improve the screening accuracy, and the material is more in and less out.	Specially designed for filtering liquids, suitable for slurries with low throughput and low impurities	Use a high-frequency vibration motor (3000 rpm) as the excitation source, suitable for filtering high-concentration slurries, such as ceramic glazes, etc.

Three Common Cleaning Devices

When using circular sieve, many users often have the phenomenon that the sieved product clogs the screen. In this case, it is necessary to use a cleaning device. The following are three common cleaning devices:

1. Bouncing ball cleaning device: Bouncing ball is a common cleaning device. Its shape is round, and its material can be divided into two types: rubber material and silicone material. Its working principle is that it is evenly distributed on the supporting ball board, generally 5-8 are distributed within ten centimeters, and the bouncing ball will also jump and hit the screen when the screen machine is vibrating and screening, so as to clean the screen.

2. Rotary brush cleaning device: It consists of two sets of cylindrical silica gel (the number is related to the diameter of the screen frame). The rotary brush is installed in the center of the screen frame and connected by a coupling. When the screen machine is started, the rotary brush starts simultaneously, so that Clean the net at the bottom of the screen frame.

3. Ultrasonic cleaning device: This device uses an ultrasonic system to clean the screen. Its main components are composed of ultrasonic power supply, transducer and ultrasonic grid. Its principle is to convert conventional power into 18KHZ high-frequency power through the ultrasonic power supply, and act on the grid through the transducer, allowing accurate separation to 20m (#635 mesh).

Application of circular sieve

Circular sieve can sort, separate or sieve materials to the desired particle size for direct use or further processing, using vibrating motion to shake the sieve to screen out the desired product, widely used in food processing, powder handling, feed processing , pharmaceutical, chemical and other industries.

1. Removal of impurities: usually a 1-layer screen, usually fine products that pass through the screen are retained as good products, and can also be used to remove broken or undersized products. In most production environments, the inspection screen is either the first machine in the process to prevent contamination, or the last machine before the packaging machine for final quality checks.

2. Classification: Precise separation of particles of different sizes from the product so that the final material is classified into different sizes. As the particle size is very close to the aperture size, the throughput of the classifying screen is usually much slower than that of the cleaning screen, however, this can be compensated for by a larger mesh area or fine-tuning the motor weight setting.

3. Solid-liquid separation: It can quickly remove insolubles in various types of slurry. It can filter up to 100 cubic meters per hour and is suitable for the filtration of ceramic glazes, pigments, soy milk, juice and other liquids.