Sand and stone production line screening system equipment introduction

Sand and stone production line screening operation can be divided into dry screening and wet screening according to the different moisture content of the material. Mortar enterprises generally use dry screening. Dry screening is more difficult for sticky and wet sand, and wet screening can also be used. That is, spray water on the screen surface will be fine and muddy wash down, or the screen surface and materials are immersed in water for screening. The ready-mixed mortar industry abroad is usually supported by professional sand drying enterprises.

According to the use of different screening, can be divided into independent screening and auxiliary screening of two categories. The product obtained after screening is the finished product screening called independent screening; The screening combined with crushing and drying operations is called auxiliary screening. In the production of ready-mixed mortar, it is necessary to remove the particles larger than 5mm in the material, and sometimes it is necessary to divide the material into several levels of products, which are often screened independently.

In the production of ready-mixed mortar, it is often necessary to divide the material into a number of grain levels. A series of screen surfaces with different screens are usually used for screening in a certain order (screen sequence).

The type of sand and stone production line equipment screen machine can be divided into the following four categories according to the movement mode of screen surface.

(1) fixed screen screen surface fixed, simple structure, small power or no power, can be used for crushing operations in advance screening. There are fixed screen and roller screen.

(2) the rotary screen is made of sieve mesh or sieve plate cylindrical surface to do the rotary motion of the sieve machine. There are cylinder screen, cone screen, corner post screen and cone screen, etc.

(3) the shaking screen depends on the crank connecting rod mechanism. The transmission machine can make the screen surface reciprocating motion. There are single box shaking screen and double screen box shaking screen.

(4) the vibrating screen relies on the shaker to produce vibration screen machine. According to the transmission mode can be divided into mechanical vibrating screen and electromagnetic vibrating screen two categories. According to the different motion track of the screen surface. It can be divided into circular vibrating screen and linear vibrating screen.

At present, most of the mortar industry use shaking screen, vibrating screen or rotary screen, the use of rotary screen is more at present.