The trommel screen is a kind of vibrating screen machine widely used in the screening technology at present. In order to make the material can be screened out in the large aperture screening section, it must be fully tumbling through the trommel screen. Only when the material particles of different particle sizes are in contact with the sieve holes as much as possible, can the particles that meet the pore size requirements pass through the screen to achieve the purpose of drum screening. In order to improve the screening efficiency of the trommel screen, care must be taken when purchasing. How to choose an ideal trommel screen? What should pay attention to when purchasing?
The trommel screen is mainly composed of a motor, a reducer, a trommel device, a frame, a sealing cover, and an inlet and outlet. The roller device is installed obliquely on the frame. The motor is connected with the roller device through the reducer through the coupling, and the roller device is driven to rotate around its axis.
Due to the overturning and rolling of the material in the drum, the material stuck in the screen hole can be ejected to prevent the screen hole from being blocked.
When the trommel screen is working, the screened material enters the screen cylinder from the feeding device, rises along the inner wall of the rotary screen cylinder, and falls loosely after rising to a certain height. In the continuous screening of the trommel screen, the materials entering the sieve drum are gradually moved to the outlet at the other end of the sieve drum under the action of pressure and looseness. In this process, the material smaller than the sieve hole leaks out through the sieve hole and is discharged from the discharge port arranged at the lower part of the sieve drum, and the material larger than the sieve hole is brought to the other end of the sieve drum with the rotation of the sieve drum. The discharge port flows out to complete the sorting operation.
When purchasing a trommel screen, the first thing to consider is the selection of the screen mesh. Usually, the screen mesh of the trommel screen has a woven type and a punching plate type. The braided screen is mainly made of round steel with the same wire diameter. Once the specific gravity of the material is too large and too heavy, the screen will be deformed and the material will leak, and the interface is relatively thin, and it is relatively difficult to make. It is said that some complexes are also expensive, and once damaged, it is difficult to reinforce, and it is suitable for screening materials with lighter specific gravity. The punching screen is very simple to manufacture. The punching plate is rounded and the interface docking is very strong and durable in design. Generally, materials with a hole diameter larger than 5 mm are screened. If it is a material with high hygiene requirements or special requirements, the punching screen can also be made of 304 stainless steel or carbon steel. Generally, the manufacturer will choose the punching screen plate as the screen of the trommel screen.
The design of the outlet of the trommel screen needs attention. We all know that the trommel screen has fast discharge and high precision, but it is inevitable that the phenomenon of material blocking will occur. When purchasing the discharge port of the trommel screen, we must choose a large diameter, and the angle of the discharge port is as close as possible to the ground. They are perpendicular to each other, so as to ensure that the material is smooth and not blocked when discharging.
For more details, please consult Zhengzhou Sinolion Machinery Co., Ltd, we will serve you wholeheartedly.
