RU174946U1 - HAMMER CRUSHER - Google Patents

Abstract

The utility model relates to the field of feed industry, namely to machines for crushing and grinding feed components. The technical result consists in reducing the dynamic loads on the bearings of the electric motor and, as a result, in increasing the life of the hammer crusher. A hammer crusher is proposed, which comprises a bed, an electric motor, a housing inside which there is a crushing chamber with a hammer rotor and sieves, a fan, and the rotor and fan are mounted on the shaft of a double bearing assembly mounted on a bed and connected through a coupling with an electric motor, with a double bearing the node is made in the form of a cylindrical housing, inside of which two bearings and a shaft are installed. 2 ill.

Description

The utility model relates to the field of feed industry, namely to machines for crushing and grinding feed components.

Known feed mill, patent RU 122309, publ. 11/27/2012, IPC B02C 13/00. The feed crusher comprises a housing with a discharge pipe and an ejection path. The housing is equipped with a lid with a separator, to which a flexible hose with an intake device is attached. A frame of an electric motor with a drive is fixed on the body. A fan and a hammer rotor are installed on the motor shaft. The rotor is formed by two disks, between which there are fingers with vanes and a set of hammers.

Known feed mill, patent RU 122307, publ. November 27, 2012, IPC B02C 13/00, which we take as the closest analogue. The feed crusher comprises a housing with an unloading nozzle, an ejection path, a lid and a separator, to which a flexible hose with a suction device is attached. A frame of an electric motor is fixed on the body, on the shaft of which there is a fan with blades and a hammer rotor. The rotor is formed by two disks, between which there are fingers with sets of hammers, between the disks there are blades attached in front of the hammers in the direction of rotation of the rotor. The crushing chamber is formed on the periphery by sieves, on the sides - by a lid and a wall with a gap in the lower part.

The disadvantage of analogues is the low durability of the rolling bearings of the electric motor, since they experience additional load from the inertia forces that arise from the imbalance of the rotor, fan and from mounting errors. In addition, dynamic loads from hammer blows to the product are transferred to the bearings. The occurrence of such loads leads to the destruction of the bearings of the electric motor.

The technical result consists in reducing the dynamic loads on the bearings of the electric motor and, as a result, in increasing the life of the hammer crusher.

The technical result is achieved due to the fact that a hammer crusher is proposed, comprising a bed, an electric motor, a housing inside which there is a crushing chamber with a hammer rotor and sieves, a fan, while the rotor and fan are mounted on the shaft of a double bearing assembly, mounted on a bed and connected through a clutch with an electric motor, while the double bearing assembly is made in the form of a cylindrical housing, inside which two bearings and a shaft are installed.

The proposed device is illustrated by the following graphic material.

In FIG. 1 shows a General view in section of a hammer mill.

In FIG. 2 shows a general view of a hammer mill.

The hammer crusher comprises a frame 1, an electric motor 2, a housing 3, a double bearing assembly 4. The housing 1 may comprise a hinged cover 5 at the top, as shown in FIG. 2. The housing 3 contains an unloading pipe 6, a crushing chamber formed by the wall 7 of the housing on one side, a partition 8 with a gap in the lower part - on the other hand, and sieves 9 on the periphery. A hammer rotor 10 is installed inside the crushing chamber. The housing 3 comprises a fan 11, which is carried out in a separate chamber formed by the housing wall 12 on one side, a partition 13 with a hole in the center, on the other hand, an ejection track (not shown in Fig.), Along the periphery . The double bearing assembly 4 is made in the form of a cylindrical housing 14, inside which two bearings 15 and the shaft 16 are installed. The double bearing assembly 4 is mounted on the frame 1 and connected through the coupling 17 to the motor 2. A rotor 10 and a fan 11 are mounted on the shaft 16.

Hammer crusher works as follows. After turning on the electric motor 2, rotation from the electric motor through the clutch 17 is transmitted to the shaft 16 of the bearing assembly 4. Through the shaft 16, the rotation is transmitted to the hammer rotor 10 and the fan 11. Under the action of the fan 11 and the rotor 10, a vacuum is created due to which the product intended for crushing is taken the intake device (not shown in FIG.) and enters the crushing chamber with the air flow. The initial product is crushed by hammers pivotally suspended on a rotary rotor 10 until the product reaches a certain fraction of grinding, determined by the size of the openings of the sieves 9. Next, the crushed product is pulled into the hole of the partition 13, where it enters the fan blades 11, through which it is discharged along the discharge path through the discharge pipe 6.

The introduction of a double bearing assembly in comparison with the prototype eliminates the rigid connection between the working shaft and the motor and compensates for the dynamic loads arising from the imbalance of the rotor, fan and mounting errors.

Claims (1)

A hammer crusher containing a bed, an electric motor, a housing inside which there is a crushing chamber with a hammer rotor and sieves, a fan, characterized in that the rotor and fan are mounted on the shaft of a double bearing assembly mounted on the bed and connected through a coupling to the electric motor, while The bearing unit is made in the form of a cylindrical housing, inside of which are installed two bearings and a shaft.

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