A vibrating screen, also known as a vibratory sieve or vibratory separator, is a device used to separate particles by size through the application of vibration. It consists of a screen mesh or surface which vibrates in order to separate particles based on their size or shape. Vibrating screens are commonly used in industries such as mining, construction, agriculture, and recycling to efficiently sort and classify materials.

1. Vibrating screen function

• Particle Screening: Separating particles based on size, shape, and other characteristics to classify materials into different size fractions.
• Particle Sorting: Sorting particles into various categories or grades according to predetermined criteria.
• Particle Dewatering: Removing moisture from particles to achieve a dry product or reduce moisture content.
• Particle Cleaning: Removing impurities, debris, or contaminants from particles to improve product quality.
• Particle Grading: Classifying particles into different grades or classes based on their size distribution.
• Particle Scalping: Removing oversized or undersized particles from a material stream to ensure uniformity and consistency.
• Particle Recovery: Recovering valuable particles from a mixture or waste stream for reuse or recycling purposes.

2. Company Profile

Tianjin Taishouxing International Trade Co., Ltd., established in 2011, is a professional manufacturer and exporter specializing in the production of steel deep processing products and other building materials. With 12 years of development history, the company’s main products include scaffolding, steel props, formwork, and pedal.Located in the Huayuan High-tech Industrial Park in Tianjin, the company’s production facilities are situated near Guo Tianjin Daqiu Zhuang, close to the 205 National Road, 70 kilometers from Tianjin Xingang Port, and 50 kilometers from Tianjin Airport, making transportation by water, land, and air extremely convenient. Covering an area of 100,000 square meters, the company currently employs 130 people and has an annual production capacity of approximately 400,000 tons of construction-related products.

3. Product introduction

• Linear screen

Functions: grading, desludging, and desliming (slit screen plates can also be used for dehydration).Screen plate selection: steel structure screen plate and full polyurethane screen plate.Vibrator selection: ZDQ series vibrator.Feeding particle size: 0-300mm, suitable for classifying large and medium-sized coal and non-coal materials with high fine particle content.

• banana sieve

Function: grading, deintermediation, desludge.Screen plate selection: steel structure screen plate and full polyurethane screen plate.Vibrator selection: ZDQ series vibrator.Feeding particle size: 0-300mm, suitable for classifying large and medium-sized coal and non-coal materials with high fine particle content.

• Circular vibrating screen

Function:Grading.Screen plate selection: punching screen plate, rod screen plate, woven screen plate.Vibrator selection: RDQ series vibrator.Feeding particle size: 0-300mm, suitable for primary and secondary classification of conventional materials.

• Linear screen, banana screen

Function: screening sticky materials.Screen plate selection: fixed screen surface (woven, punched, rods, slits) and relaxation screen plate.Vibrator selection: ZDQ series vibrator or RDQ series vibrator Feeding particle size: 0-50mm.When the fixed sieve plate is used for relaxation screening, the feed particle size is 0-300mm.

• Rod screen (rod feeder)

Function: feeding + pre-screening.Screen plate selection: Steel structure rod screen plate (manganese steel, stainless steel, wear-resistant material).Vibrator selection: ZDQ series vibrator .feeding particle size: 30-1000mm suitable for pre-screening of large-grained materials

• High Frequency Vibrating Screen:

Designed for dewateringpurposes. The screen plate features polyurethane frame with stainless steel strip seams or full polyurethane strip seams. The vibrator selection includes ZDQ series vibrators or vibrating motors. It is suitable for a feed particle size of 0-5mm and is used for dewatering froth coal and coal slurry in coal mines, as well as dewatering fine sand in non-coal applications.

• Sieve Bends:

Also Read: How does a shaker screen work?

Available in vibrating and non-vibrating variants, both designed for dewatering purposes. The vibrating variants come equipped with vibrating motors, while the non-vibrating variants do not include motors. The screen plate features curved screen plates. Vibrator selection includes vibrating motors. It is suitable for a feed particle size of 0-5mm and is used for dewatering froth coal and coal slurry during transportation in coal mines, as well as dewatering fine sand in non-coal applications.

4. Vibrating screen parameters

• Amplitude of vibrating screen

Generally, the larger the High Frequency vibrating screens model, the larger the amplitude selected. Because the greater the amplitude of the vibrating screen, the less clogging of the screen holes will be, which is more conducive to the screening and stratification of ores and better screening production capacity. The selection of vibrating screen amplitude is usually determined by the particle size and properties of the ore. When the ore particles are small, moist and have a certain degree of viscosity, we need to use low frequency and large amplitude.

• Vibration frequency of vibrating screen

The vibration frequency has a direct impact on the beating state of the ore particles on the screen surface. Taking the high-frequency vibrating screen as an example, its high frequency destroys the surface tension of the slurry very well, causing the fine-grained materials to oscillate at high speed on the screen surface, accelerating the separation of useful minerals, and at the same time increasing the separation of materials smaller than the separation particle size from the screen. The probability of hole contact thus creates good screening conditions.

• Screen surface inclination angle of vibrating screen

The inclination angle of the Vibrating Screens is determined based on the material application and actual production needs. For fine screening, it is recommended to use a horizontal vibrating screen; if the particle size of the screened material is large and the screening rate is good, an inclination angle of 5-10° can be used; if the particles are large and excessively powdered, an inclination angle of 15° can be used. The premise of a reasonable range of vibrating screen inclination angle is that the material particles are evenly distributed. Different types of vibrating screens have different installation inclination angles. The installation inclination angle of high-frequency vibrating screen is about 30°, the inclination angle of general-purpose vibrating screen is 0-15°, while the discharging end of the vibrating screen for dehydration is tilted upward (often said negative angle).

These parameters are crucial for selecting, designing, and operating vibrating screens effectively in various industrial applications.