Air separator АСХ-2,5

Purpose:

Air separators АСХ with a closed air circuit and a cross-flow fan are designed for dividing grain crop dehulling products (collection of hull and hulling bran, hull control, and finished product control) and for grain cleaning and blowing off light impurities.

Air separators with a closed air cycle are designed to separate bulk products using an air flow based on the difference in the aerodynamic properties of the particles of the separated components of the mixture. Air separators can be used as separate pieces of equipment, for example, for separating husks and flour in mills, groats, oil presses and oil extraction plants, and in combination with grain separators at elevators, grain receiving and other grain processing enterprises.

Separators are manufactured according to the 3rd category State Standard 15150 in climatic version "У" for the domestic market and export to countries with a temperate climate. In this case, the separators must operate reliably in operating modes at temperatures from minus 10 to plus 40 ° С, relative humidity 80 % at an average annual temperature of plus 15 °С, atmospheric pressure from 650 to 800 mm Hg. (86.6 ÷ 106.7 kPa). Separators are installed in hulling departments of groats factories and grain cleaning departments of mills.

Specification:

Design and operation:

The design of the separators АСХ-2.5 and АСХ-5 is similar and differs only in the lengths of the bodies. The separator consists of an inlet pipe and a housing, which is a prefabricated welded structure made of sheet steel, in which a receiving chamber, vertical pneumatic separating and recirculating channels, and a sediment chamber are formed by the inner walls and partitions. A cross-flow fan (rotor) and an auger are built into the sedimentation chamber along the length of the machine for withdrawing the precipitated relative. An outlet pipe is welded to the bottom of the pneumatic separation channel for removing the purified product from the separator. In the upper part of the receiving chamber, there are cargo valves for adjusting the product supply and a divider, the position of which can change relative to the receiving branch pipe depending on the direction of the product flow, which allows it to be better distributed along the length of the receiving chamber and the pneumatic separation channel. The position of each valve is individually selected and adjusted by moving the weights on the valve mounting levers. The product enters the pneumatic separation channel along a guide, which forms a horizontal section with a width of "20 mm for better" sprinkling "of it in the separation zone, or along an inclined plane of the slope at an angle of 500 when using a separator for husk control.

To regulate the air regime at the entrance to the sedimentation chamber, a streamlined rotary control damper is installed. The cross-section of the regulating flap is lemniscate-shaped. The adjustment is done with a screw.

1. Receiving nozzle
2. Receiving chamber
3. Pneumatic separating channel
4. Sediment chamber
5. Rotor
6. Recirculation channel
7. Screw
8. Valve
9. Drive
10. Counter-drive
11. Divider
12. Outlet nozzle

In the sludge chamber, from the suction side of the fan, there are three swing bars for adjusting the air flow. The position of the groove on the end face of the axle to which the slewing ledge is attached corresponds to the position of the ledge in the cage. The rotor of a cross-flow fan is of a welded construction with discs to which the blades are welded. The rotor rotates in bearing units. Depending on the crop being processed and productivity, the fan speed can be changed with replaceable pulleys. The auger shaft is mounted on two spherical ball bearings. On the opposite side of the rotor drive, there is a window for withdrawing the relays from the auger and an anti-suction valve, which is made of sheet rubber and reinforced with longitudinal metal strips.

For visual observation of the processes of product entry into the machine and separation in the pneumatic channel, two viewing windows are provided from the ends of the machine, which are attached to the walls with a rubber seal. For mounting and cleaning the inner surfaces of the separator, a cover with rubber seals is attached to the end wall of the body. An electric motor mounted on a plate, a V-belt transmission and a counter drive are used to drive the fan and auger. The counter drive can move in two directions: vertical and horizontal, thus ensuring that all V-belts are tensioned. In order to avoid dusting and air suction, a branch pipe is attached to the end wall of the case at the place of discharge. The inlet pipes end with flanges; adapters are attached to the outlet nozzles, which provide the ability to connect gravity product pipelines to them.