What Is A Rotary Vibrating Screen And What Is Its Purpose?

Rotary vibrating screen is a high-precision fine powder screening machine with low noise and high efficiency. It takes 3-5 minutes to quickly change the screen and has a fully enclosed structure. It is suitable for screening and filtering materials such as particles, powder, and mucus. The rotary vibrating screen is excited by an upright motor, with eccentric weights installed at the upper and lower ends of the motor. The rotating motion of the motor is transformed into a three-dimensional motion of horizontal, vertical, and inclined, and then transmitted to the screen surface. Adjusting the phase angle between the upper and lower ends can change the movement trajectory of the material on the screen surface.

operational principle

The three-dimensional rotary vibrating screen is excited by an upright motor, with eccentric weights installed at the upper and lower ends of the motor to transform the rotational motion of the motor into horizontal, vertical, and inclined three-dimensional motion. This motion is then transmitted to the screen surface, causing the material to move outward and gradually on the screen surface. Therefore, this series of vibrating screens is called rotary vibrating screens. The rotary vibrating screen has the advantages of long material operation trajectory and high screen surface utilization. By adjusting the phase angle of the upper and lower end weights, the movement trajectory of the material on the screen surface can be changed. It can perform precision screening, probability screening, and other screening of the material.

After the rotary vibrating screen is started, its power device is the eccentric blocks with different phases at the upper and lower ends of the vibrating motor. Due to the high-speed placement effect, a composite inertial force is generated. This inertial force forces the vibrating body of the screen machine to rotate again, and the screen frame continuously moves back and forth under the action of the vibrating force, driving the screen surface to vibrate periodically. This causes the materials on the screen surface to move in a directional and active manner along with the screen box. During this process, materials smaller than the screen surface aperture fall to the lower layer through the screen hole, becoming the underscreen material. Materials larger than the screen surface aperture are discharged from the discharge port after continuous jumping motion, completing the screening work. The motion trajectory of the vibrating body of the rotary vibrating screen is a complex three-dimensional spatial curve, which is projected as a circle on the horizontal plane and two identical ellipses on the two vertical planes. In practical application, by adjusting the relative phase of the eccentric blocks at the upper and lower ends of the vibration motor, the movement trajectory of the material on the screen surface can be changed, thereby achieving different screening operations.

 

 

Product features

1. Small in size, light in weight, easy to move, with adjustable discharge port direction. Coarse and fine materials are automatically discharged, and can be operated automatically or manually.

2. High screening accuracy and efficiency, suitable for use in any powder, particle, or mucus category.

3. The sieve is not clogged, the powder does not fly, and the screening can reach 500 mesh (28 microns). The filtration can reach 5 microns.

4. Unique mesh design (mother and son style), long-lasting use of mesh, convenient replacement of mesh, only 3-5 minutes, simple operation, and easy cleaning.

5. No mechanical action, easy maintenance, can be used in single or multiple layers, and the parts in contact with materials are made of stainless steel (excluding pharmaceutical use).

Applicable industries

Any particle, powder, or mucus within a certain range can be screened in various powder industries.

Industry: resin powder, pigment, laundry detergent, micro powder, paint, soda ash, lemon powder, rubber, plastic, etc.

Abrasive and ceramic industries: alumina, quartz sand, slurry, spray soil particles.

Food industry: sugar, salt, alkali, monosodium glutamate, milk powder, soybean milk, yeast, juice, soy sauce, vinegar, etc.

Paper industry: coating coatings, clay slurry, black and white liquid, waste liquid, papermaking liquid, and wastewater recycling.

Metallurgical industry: titanium oxide, zinc oxide, electromagnetic materials, metal powders, welding rod powders, etc.

Pharmaceutical industry: Chinese medicine powder, Chinese medicine liquid, Western medicine powder, Western medicine liquid, Chinese and Western medicine granules, etc.

Environmental protection: garbage, human and animal manure, waste oil, food wastewater, wastewater processing, etc.

 

 

Preparation before installation

1. Check if the motor label matches the requirements.

2. Measure the insulation resistance with a 500 volt megohmmeter, and the value should be dried for the stator winding. The drying temperature should not exceed 120 ℃.

3. Check the fasteners of the motor to prevent looseness.

4. Check the surface of the motor for damage or deformation.

5. Check if the rotation is flexible, and if there are any abnormalities, they should be eliminated.

6. Check the power supply for phase loss and run it without load for 5 minutes.

Installation and Adjustment

1. The motor should be fastened to the installation surface, which must be smooth and flat.

2. The motor can be installed horizontally.

3. The motor lead adopts a four core rubber cable YZ-500V. When connecting to the power supply, the outgoing cable is not allowed to have sharp bends and is reliably fixed with the vibrating body.

4. The motor should have a reliable grounding, with a grounding device inside the motor and markings on the lead end. It can also be grounded using sturdy bolts on the base.

5. Adjustment of excitation force.

Use and Maintenance

1. This machine should be equipped with electrical protection devices.

2. During the initial operation of this machine, check the anchor bolts at least once a day to prevent loosening.

3. When the rotation direction of the motor does not meet the requirements, adjust the phase sequence of the power supply.

4. The motor should ensure good lubrication, and lithium based grease (ZL-3) should be added every two weeks of operation. When adding oil, add an appropriate amount of lithium based grease through the oil cup. When using sealed bearings, the motor is not equipped with an oil cup.

5. After running the machine for a total of 1500 hours, the bearings should be inspected. If there is serious damage, they should be replaced immediately.

6. When the machine is used again after being stopped for a long time, the insulation resistance should be measured. It should be greater than 0.5 megaohms when used for measuring with a 500 volt megohmmeter.