Used vibrating screen

Types of used vibrating screens

A used vibrating screen sorts and separates material, mostly solid and rough, according to size or shape. The screen is positioned at an angle to achieve separation. It is commonly used in industries such as mining, recycling, agriculture, and the pharmaceutical industry.

There are two types of vibrating screens. The circular vibrating screen is a single-shaft vibrating screen with an elliptical motion track. The linear vibrating screen is a double-shaft vibrating screen with a linear track. Both screens work by changing the direction of the screen, making the material bounce in different directions. Linear vibrating screens are used more for the screening of wet materials with low amounts of large particles, while circular vibrating screens are better suited for screening dry materials with high amounts of large particles.

The elliptical vibrating screen is a vibrating screen with an elliptical movement track. It is also called an ellipsoidal vibrating screen, a planar elliptical vibrating screen, or a linear vibrating screen. The movement track of the screen box is elliptical. The vibrating screen has an elliptical motion track, which is suitable for the classification of large particle sizes. Elliptical vibrating screens are widely used in coal preparation plants, coal mines, smelting, and dressing as well as the chemical industry.

Specification and maintenance of used vibrating screens

Specification

• Structure:

The vibrating screen is usually composed of a screen box, a vibration unit, and a vibration isolator. The vibration unit includes an eccentric block, a bearing housing, and a bearing. The eccentric block is fixed on the main shaft, and the main shaft drives the bearing housing to rotate through a pulley or a coupling. The vibration isolator is usually made of spring or rubber.

• Vibration Parameters:

These parameters include vibration force, amplitude, vibration frequency, and direction angle. The vibration force is the driving force of the vibrating screen. Its unit is Newton. The amplitude represents the displacement of the vibrating screen. The unit is mm. The vibration frequency represents the number of swings per unit time. The unit is Hz. The direction angle usually refers to the angle between the motion trajectory of the vibrating screen and the horizontal plane.

• Screen Mesh:

The screen mesh is the main wearing part of the vibrating screen. It is usually made of spring steel, stainless steel, and other materials. The screen mesh size and the aperture size are the main parameters.

• Capacity:

The capacity of the vibrating screen is usually calculated by the screening area and the screen mesh size. The screening area is the area of the screen mesh, which is determined by the screen mesh size. The capacity is the amount of material that the vibrating screen can process in a specific time.

Maintenance

It is essential to do proper maintenance for used vibrating screens to enhance their operational efficiency and extend their service life. The following are some commonly used maintenance methods.

• Always check the screen surface of the vibrating screen to find and solve problems in time. If the screen mesh is damaged, it should be replaced as soon as possible.
• Regularly check the vibration motor and the vibration exciter. The fasteners of the vibration motor and the vibration exciter should be tightened at fixed intervals. If the parts are damaged, they should be repaired or replaced in time.
• Regularly check the vibration transmission system, including the V-belt, gear, and other components, to ensure that they are in good condition.
• Lubricate the vibration motor regularly to ensure its good operation.

Scenarios

Vibrating screens have a wide range of scenarios across many different industries. They are commonly used in the following industries for their intended purpose:

• Food Processing: In the food processing industry, vibrating screens are used to sort and purify food products. They are used to remove impurities and contaminants, classify food products into distinct categories, and filter solid particles from liquids. This makes food products of the highest quality and safety. Vibrating screens are used to process a variety of food products, including grains, vegetables, meat, and dairy products.
• Mining: In the mining industry, vibrating screens are used to separate and classify different types of minerals. They are commonly used in the early stages of mining to separate valuable minerals from other materials. Vibrating screens are also used in the mining industry to further process minerals after extraction. They are used to grade and separate minerals according to their size and quality.
• Chemical Processing: Vibrating screens are used in the chemical processing industry to separate and purify chemicals and pharmaceuticals. They are used to remove impurities and contaminants from chemicals and pharmaceutical products. Vibrating screens are used to ensure that chemical products meet the required quality standards. In the chemical processing industry, vibrating screens are used to process a variety of products, including fertilizers, pesticides, and specialty chemicals.
• Construction: In the construction industry, vibrating screens are used to separate and classify different types of materials. They are used to process construction waste and recover valuable materials for reuse. Vibrating screens are also used in the construction industry to separate aggregates and other materials used in construction.
• Recycling: Vibrating screens are used in the recycling industry to sort and categorize different types of materials. They are used to separate and recover valuable materials from recyclable waste. Vibrating screens are also used to remove impurities and contaminants from recycled materials.

How to choose used vibrating screens

Various factors should be considered when choosing a used vibrating screen for sale. Since the business is a second-hand machine, the condition of the machine should be the first important factor to look at. Ensure the screen is in good working condition, and no parts need to be replaced. The machine should be able to produce the required capacity and separation efficiency. If it is worn out and parts need to be replaced, the cost of replacement should be reasonable.

It is also important to consider the material features and properties that need to be screened. Ensure the size and type of mesh of the vibrating screen match the material that will be processed. The machine should have the required capacity and separation efficiency for the application.

The area of the site where the screen will be installed should be measured to ensure it can fit the available space. The screen's height and width and the space needed for maintenance and servicing should be considered.

Ensure the screen has the necessary features for the application, such as the proper mesh size, screening motion, and angle. The screen should also have the required capacity.

If there are specific requirements, such as the need for a certain frequency or deck configuration, these should be specified. It might take more time to find a screen that meets specific requirements. If the machine is too far away, it might be too expensive to transport it. If the machine is not close to the site, the cost of transporting it should be reasonable. A machine that is in close proximity to the site is the most cost-effective option.

Since it is a used machine, the cost of purchase is important. The machine should be within budget, and the maintenance and running costs should be affordable. Thorough research and price comparisons will help find a machine that is within budget.

Used vibrating screens Q and A

Q1: Can a used vibrating screen be modified to meet specific needs?

A1: Yes, it can. An experienced supplier can modify a used vibrating screen to meet specific requirements. For instance, it can be resized to fit a particular production line. Additionally, the screen's mesh size can be changed to achieve different separation needs. Such modifications are more cost-effective than purchasing a new vibrating screen.

Q2: How can business owners maximize the lifespan of a used vibrating screen?

A2: Regular maintenance is the key to extending the lifespan of a used vibrating screen. Owners should inspect the screen for loose fasteners, unusual noises, and signs of wear. Such maintenance helps identify potential issues before they become severe. Additionally, owners should follow a routine lubrication schedule to protect critical components. The appropriate lubrication minimizes friction and reduces premature wear. Also, owners should ensure that the screen is used within its capacity. Overloading can lead to accelerated wear and premature failure. Finally, operators should provide adequate training to equipment handlers. Proper handling and operation are crucial to preventing damage.

Q3: Can a used vibrating screen be used in food processing applications?

A3: It's possible to use a used vibrating screen in food processing applications. However, it requires thorough cleaning to remove residue or contaminants from previous materials. The cleaning process can vary depending on the type of vibrating screen. For instance, some screens can be disassembled for a thorough wash. On the other hand, some screens are only suitable for dry cleaning procedures. It's also important to note that a used vibrating screen may not meet current hygiene and safety standards. As a result, it may not be suitable for critical food processing applications.