SU874171A1 - Mill for disintegrating loose materials - Google Patents

Description

(54) MILL FOR GRINDING BULBS

I

The invention relates to machines for grinding materials and can be "used for fine grinding of bulk materials.

A separation mill is known, which consists of the grinding mechanism NmEa hammer Tjma and the separation device. The separator is a self-contained disk, on the surface of which there are zigzag canisters, closed with a CpejnQr disk cover. The separator is placed in a common housing with a peal unit and is rotated from a separate drive. Under the action of air flow, the material being crushed passes through a rotating separator, where particles with a mass less than the limit value are transferred from the separator to the bottom of the chamber, and particles with a mass less than the limit value are removed by the air flow from the mill.

However, particles of comminuted material with a mass equal to the limiting value, with the same probability can be MATERIALS

taken out by the air flow or from the worn out into the grinding chamber, because of which they tend to accumulate in the channels of the zigzag separator, which is leaking out. disrupting the mill regime, improves its performance and, ultimately, leads to the necessity of stopping the mill and cleaning the separation wheel.

Closest to the proposed

To those the first solution is a disintegrator consisting of enclosed in a housing equipped with fittings for air supply, two disk rotors coaxially arranged on vertical shafts.

15 with working elements in the form of plates, loading and unloading pipes 21

Disadvantages of the disintegrator are lack of efficiency due to

20 breakthrough material and the absence of separation of the crushed product.

Claims (2)

The purpose of the invention is to increase the efficiency of the grinding process. The supply chain is achieved by the fact that the device containing the Kiapnyc prisoners, equipped with air inlets, two coaxially located on the vertical shafts of the disk rotors with working elements in the vice plates, loading and unloading nozzles, is equipped with additional loading nozzles located along the periphery of the housing, and the plates are fixed to the rotor bottoms in concentric rows at an angle of 1.5-30 to the diameter in the direction of rotation of the rotor, while the shaft is hollow to discharge the finished product. The drawing shows a mill for grinding bulk materials. The mill contains two or more loading devices 1, located on the periphery, and a housing 2, on the inner side of which there are reflective plates 3. In the mill housing there are two coaxial rotors rotating towards each other, arranged in a horizontal plane. Top rotor. 4 contains 2-3 rows of shock plates 5. The lower rotor 6, except for the same number of rows of plates, contains in the inner circle from 4 to 8 beat 7, Reflective plates on the rotors are placed with a shift by the length of the plates. The hollow shaft 8 serves to unload the crushed product. Through the covers 9, air flows through the fittings 10 into the mill housing under the rotating disks. The gap between the plates of the two rotors is 0.2 O, 6 mm. The number of plates in rows selects so that the distance between the plates in the row is the same, regardless of the row number. The plates are set at an angle of 15-30 to the diameter in the direction of rotation of the discs. The distance between the plates in the row at the selected installation angle is taken in such a way that zigzag Ka anbij are obtained in which the particle cannot freely fly from the periphery to the center of the rotor,. to the unloading area. The mill operates as follows: The raw material through the loading devices 1 enters the housing 2, where it falls under the rotating blades 7, is thrown onto the reflective plates 3 and is changed due to repeated shocks. The crushed material under the action of the flow coming through the holes in the lids and the inertial forces is directed to the zigzag separator. Chasins with a mass below the limit value are removed by air from the mill through the hollow shaft 8 of the lower rotor. Particles with the mass of the boundary value and the combat, which fall into the zone of the zigzag operator, partially break up moving towards each other in a series of plates or are thrown back into the main crushing zone. .4 The application of the proposed mejnitsy allows to eliminate the breakthrough of particles of crushed material, higher than the established size limit. Changing the air flow can shift the grain size limit of the grinding product. In this way, the mill increases separation efficiency, thereby increasing productivity. In addition, the combination of grinding and separation devices makes the mill compact and reduces its intensity. Claims of the Invention Mill for grinding bulk materials, enclosed in a housing equipped with air inlets, two coaxially arranged on vertical shafts disk rotors with working elements in the form of plates, loading and unloading nozzles, which is different in that grinding, it is equipped with additional loading nozzles located along the periphery of the housing, and the plates are fixed on the rotor disks in concentric rows at an angle of 15-30 to the diameter of about the direction of rotation of the rotor, with the bottom. shaft is made pol. .dl unloading ready. whatever product. Sources of information taken into account in the examination 1. Khint I. A. Basics of the production of silicate products M., Publishing house of literature on construction, 1966, p. 552-567. 2. USSR author's certificate number 537693, cl. B 02 C 7 / B8, 1974 (. Prototype).