RU227364U1 - HOPPER-FEEDER - Google Patents

Abstract

The utility model relates to the field of transportation of bulk materials and is used as a storage hopper in technological complexes for the production of various composite materials. The feeder hopper consists of a drive, a supply hopper with a loading hatch, a shaft with a screw, which has the ability to reverse rotation and is equipped with triangular-section fender blades on both sides, a housing with unloading and unloading hatches located on opposite sides, and the unloading hatch is equipped with a cover , made flush with the inner surface of the housing. The cross-section of the supply hopper is made in the form of an equilateral trapezoid, the larger base of which is located in the lower part. The side walls of the supply hopper have an inclination of 2° from the vertical plane and are equipped with brackets on which vibration-stimulating devices are installed. The technical result consists in eliminating jamming (hanging) of bulk material between the walls in the supply hopper and ensures uninterrupted delivery of bulk material from the feeder hopper. 1 ill.

Description

The utility model relates to the field of transportation of bulk materials and is used as a storage hopper in technological complexes for the production of various composite materials. The utility model can be used in the chemical, construction and other industries.

Typical designs of screw and screw feeders are known, given in the literature (Grigoriev A.M. “Screw Conveyors” M.: “Machine Building”, 1972; Malikov S.P. “Balances and weighing dispensers: Handbook” M.: “Machine Building”, 1981, pp. 90-91; Vidineev Yu.D. “Continuous dispensers” M.: “Energy”, 1978, p. 73), which consist of a housing with loading and unloading pipes, inside the housing there is a rotating shaft with a screw surface, which is supported on bearing supports. The shaft is rotated by a drive. As a rule, such technical devices are built into one or another technological scheme for transporting bulk material from a storage hopper to a subsequent technological apparatus, for example, a dosing device for powdered materials.

The design of a screw feeder is known according to RF patent No. 2381164 B65G 33/14, which, according to the description, performs the function of a storage hopper, the supply of bulk material from which is carried out by a screw feeder. This design of the screw feeder was adopted by the authors as a prototype, as it is the closest in terms of essential features of the patented technical solution.

The disadvantages of the prototype include the fact that the side walls of the supply hopper are made vertical, and in the case of loading bulk material into the supply hopper using the pouring method, spontaneous compaction occurs. At the same time, with a long technological cycle and the use of hygroscopic bulk material, it becomes saturated with moisture. This leads to the fact that the flowability of the processed product decreases, caking occurs in the upper layers, and jamming (hanging) of the bulk material occurs between the vertical walls in the supply bin. This leads to forced unscheduled shutdowns of the technological cycle until the cause is eliminated.

The technical problem to be solved by the proposed utility model is to prevent jamming (hanging) of bulk material between the walls in the supply hopper, which will ensure uninterrupted delivery of bulk material from the feed hopper.

The technical result is achieved by the fact that the feeder hopper consists of a drive, a supply hopper with a loading hatch, a shaft with an auger, which has the ability to reverse rotation and is equipped on both sides with fender blades of a triangular cross-section, a housing with unloading and unloading hatches located on opposite sides, in this case, the unloading hatch is equipped with a cover made flush with the inner surface of the housing. The cross-section of the supply hopper is made in the form of an equilateral trapezoid, the larger base of which is located in the lower part. The side walls of the supply hopper have an inclination of 2° from the vertical plane, and are equipped with brackets on which vibration-stimulating devices are installed.

The essence of the proposed utility model is illustrated in Fig, which schematically shows the feeder hopper and its main elements,

Where:

1 - supply hopper;

2 - loading hatch;

3 - shaft with auger;

4 - drive;

5 - cover;

6 - unloading hatch;

7 - body;

8 - unloading hatch;

9 - fender blade;

10 - wall;

11 - bracket;

12 - vibration stimulating device.

The feed hopper consists of a supply hopper 1, a shaft with a screw 3, a housing 7 and a drive 4. The supply hopper has a loading hatch 2. The cross-section of the supply hopper is an equilateral trapezoid, expanding at the bottom. The walls 10 of the supply hopper are made with a slope of 2°. Each of the walls is equipped with a bracket 11, on which a vibration-stimulating device 12 is installed. The shaft with the auger is equipped on both sides with fender blades 9 of a triangular cross-section. The shaft with the auger has the possibility of reverse rotation. Housing 7 is equipped with an unloading hatch 8 and a discharge hatch 6, located on opposite sides of the housing. The unloading hatch is equipped with an opening cover 5, which is made flush with the inner surface of the housing.

The operation of the feeder hopper is carried out as follows. In the initial state, the unloading hatch 8 of the feeder hopper is connected by a connecting element to the subsequent technological apparatus. The unloading hatch 6 is closed by a lid 5. The required amount of bulk material is loaded into the supply hopper 1 through the loading hatch 2. By turning on the drive 4, the shaft with the screw 3 is rotated, which directs the bulk material from the supply hopper to the subsequent technological apparatus. The rotation speed of the drive 4, and, accordingly, the shaft with the screw 3, is regulated by the control system of the technological complex. Together with the shaft with the auger 3, the fender blades 9 rotate, which prevent bulk material from entering the bearing units. Since the breaker blades are made in the shape of a triangle, in any direction of rotation of the shaft with the auger, they will direct the bulk material in the direction opposite to the bearing units. The shape of the supply hopper, made in the form of an equilateral trapezoid expanding at the bottom, eliminates cases of jamming (hanging) of bulk material between the walls 10 in the supply hopper. Additional intensification of the unloading of bulk material from the supply hopper is provided by the use of vibration-stimulating devices 12. At the end of the technological process, the surface of the shaft with the screw 3, the internal surfaces of the housing 7 and the supply hopper 1 are cleaned from the remnants of the processed product. To do this, remove the connecting element from the unloading hatch 8, open the cover 5 of the unloading hatch 6. Place containers under the unloading and unloading hatches, and unload the remaining bulk material. After this, final cleaning of the surfaces of the internal volume of the feed hopper is carried out. The unloading hatch 6 is closed with a lid 5, and the unloading hatch 8 of the feeder hopper is connected by a connecting element to the subsequent technological apparatus. The feeder hopper is ready for the next technological cycle.

Thus, the use of a supply hopper in a feeder hopper, which in cross-section is made in the form of an equilateral trapezoid expanding at the bottom, in which the side walls of the supply hopper are made with a slope, and are additionally equipped with vibration-stimulating devices, eliminates jamming (hanging) of bulk material between walls in the supply hopper, and ensures uninterrupted delivery of bulk material from the feed hopper.

Testing of the proposed utility model in the pilot industrial conditions of JSC NIIPM confirmed its effectiveness and performance.

Claims (1)

Feeder hopper, consisting of a drive, a supply hopper with a loading hatch, a shaft with a screw, which has the ability to reverse rotation and is equipped with triangular-section fender blades on both sides, a housing with unloading and unloading hatches located on opposite sides, while the unloading hatch is equipped a cover made flush with the inner surface of the housing, characterized in that the supply hopper in cross-section is made in the form of an equilateral trapezoid, the larger base of which is located in the lower part, the side walls of the supply hopper have an inclination of 2° from the vertical plane and are equipped with brackets on which vibration stimulating devices are installed.

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