RU2248703C1 - Blade-type pneumatic feeder - Google Patents

Abstract

FIELD: food-processing industry, in particular, baking industry.

SUBSTANCE: blade-type pneumatic feeder has hopper and rotor positioned for rotation in casing. Casing is equipped with branch pipes for discharge of product and for supplying of pressurized air from pressure pipeline, and drive. Pneumatic distributor located in pressure pipeline is connected with electromagnetic sensor, which is coupled through crank mechanism and ratchet mechanism with rotor shaft of rotation.

EFFECT: increased efficiency.

1 dwg

Description

The present invention relates to the food industry, in particular to the baking industry, and in particular to the designs of bakery units.

In modern bakery production, various types of feeders are used to transport flour by pneumatic transport.

Known rotary feeder brand M-116 (Handbook of bakery production. Volume 1. M., "Food industry", 1972, pp. 125-126). The rotary feeder of the M-116 brand is a rotor-cylinder, along its generatrix 10 longitudinal pockets are made for transporting the material. The dividing ribs of these pockets form lock gates with the walls of the casing and are located at an angle of 70-10 degrees to the axis of the rotor. The feeder is equipped with a pneumatic device that supplies compressed air to the lower part of the housing. When the rotor rotates, the flour moves to the lower part of the body, from where it is transported to production.

As a prototype, a rotary lock feeder of the M-122 brand, developed by VNIIHP NPO Khlebprom (TU 27-08-1997-76), was selected. The specified feeder is designed to supply flour with air from the bulk storage bin to the pneumatic conveying system. It consists of a housing, two end caps, a vane rotor rotating in radial spherical bearings, and nozzles for supplying air and venting air with flour. The feeder drive consists of an electric motor, a worm gear, two three-stage pulleys connected by a V-belt, and a chain drive with sprockets. The feeder flange of the housing is attached to the flange of the outlet cone of the hopper. During the operation of the feeder, the flour enters from the hopper into the body of the feeder, then into the compartments of the rotating blade rotor, which transfers it to the lower part of the feeder. The air coming in under pressure through the inlet pipe is mixed with flour and carries it through the outlet pipe into the flour pipe.

A disadvantage of the known design of the feeder is that the air is fed continuously into the nozzle, and at low rotor speeds the flour aerosol is “lean”, mainly air moves through the flour pipe. If you reduce the amount of air supplied, the flour begins to “lie” on the walls of the flour pipe.

These shortcomings are especially evident when it is necessary to feed a small amount of flour or other bulk material through a short flour line.

The problem solved by the invention is the elimination of these disadvantages, namely increasing the productivity of the feeder.

The problem is solved using the proposed feeder design, including a hopper for feeding bulk material into the feeder, a rotor blade rotating in the housing, a drive and nozzles for discharging bulk material and for supplying compressed air, while a pneumatic distributor is connected to the pressure manifold connected to an electromagnetic sensor connected through a crank and ratchet mechanisms with the axis of rotation of the rotor.

The design of the proposed feeder is shown in the drawing. The feeder consists of a rotor 1, rotating in the housing 2, in the lower part of the housing is equipped with a nozzle for supplying compressed air through the pressure pipe 3 and a nozzle for blowing loose material 4. The axis of the rotor 1 is rigidly connected to the ratchet mechanism 5, which receives rotation from the electric motor 6 through crank mechanism 7. The pressure line of compressed air 3 is connected to the compressor 8 via an electromagnetic pneumatic distributor 9. The pneumatic distributor 9 receives a signal from an electromagnetic sensor 10 associated with the crank th mechanism 7. In the upper part of the body a hopper feeder 11 for feeding bulk material 12 (flour et al.).

The feeder works as follows. During the rotation of the rotor blade 1, the bulk material (flour) from the hopper 11 enters the lower part of the feeder. The rotor blade receives rotation from the electric motor 6 through the crank mechanism 7 and the ratchet wheel 5. Thus, the rotation of the blade rotor is cyclic - one turn of the crank mechanism 7 rotor 1 is rotated by an angle α equal to the angle between two adjacent rotor blades. When the rotor 1 stops, the sensor 10 sends a signal to the pneumatic distributor 9, which opens, and air from the compressor 8 enters the pressure pipe 3, blowing loose material (flour) from the rotor cavity through the nozzle 4. When the rotor 1 resumes movement, the pneumatic distributor 9 closes and access air to the pressure pipe 3 stops. The next cavity of the rotor blade, filled with flour, takes place between the holes of the pipe 4 and the pressure pipe 3 - the cycle repeats. The value of the angle of rotation of the blade rotor 1 is set by a ratchet mechanism 5, the rotation frequency - by an electric motor 6.

Thus, the proposed design of a paddle pneumatic feeder will improve the performance of feeding bulk material (flour) into the flour pipe by eliminating the uneven movement of material in the feeder.

Claims (1)

A pneumatic paddle feeder, including a hopper for supplying bulk material to the feeder, a rotor rotating in the housing, a drive and nozzles for discharging bulk material and supplying compressed air from the pressure manifold, characterized in that a pneumatic distributor is connected to the pressure manifold connected to an electromagnetic signal sensor, connected through a crank and ratchet drive mechanisms with the axis of rotation of the rotor.