RU2613193C1 - Proportioning feeder for granular materials - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: proportioning feeder for granular materials includes a motor, boot reservoir, body, screw, bearing assembly and the main feeder outlet, and the cylindrical coil spring, tension and release of which is provided by the solenoid. Solenoid and engine control is provided by electronic device control. Excess material passing through the gaps formed by the spring turns, are poured into the collector.

EFFECT: possibility of a regulated material feed to the work area, without changing the number of motor revolutions.

2 dwg

Description

The invention relates to metering devices for bulk materials.

Known feeder-dispenser of bulk materials allowing the flow of bulk materials into the work area with the least wear on the screw and bearing assemblies due to a removable anti-friction insert that protects the housing from material, a helical groove located in the shaft friction zone, and a seal with winding directed to the side , similar to the screw winding direction, due to which the material is removed from the bearing towards the screw assembly. The invention allows to regulate the supply of material to the working area, as well as to increase the resource of the bearing and screw units (RF patent No. 2545303, B01F 15/04, publ. 03/27/2015).

The disadvantage is a change in the flow of bulk material due to a change in the number of revolutions of the electric motor or the use of conveying gas.

Known spiral feeder-dispenser of bulk materials, comprising a housing with loading and unloading necks and a transporting spiral located in it, a drive, a rod located in the cavity of the transporting spiral on the opposite side of the drive with the possibility of axial movement to the required depth, characterized in that the transporting body made of conveying and dosing sections, in the dosing section in the discharge neck area the tubular body is conical, the conveying section made in the form of a helical conical spiral spring placed on the discharge neck side, and a conical shaft with the possibility of rotation and axial movement is installed in the helical conical spiral spring (RF patent No. 2469942, B65G 33/14, B65G 33/26, publ. 12.20.2012 )

The design drawback is low productivity due to the use of a coil spring.

Known feeder-dispenser of bulk materials of continuous action, containing a hopper tapering downward with an unloading nozzle, a transporting body and a drive located on the bottom of the hopper, the transporting body being made in the form of a spiral with a variable pitch located on the shaft, the spiral being connected at one end to the shaft by bushings with a clamp, characterized in that the transporting body is made combined and consists of a transporting and dosing sections, while the transporting section is made n in the form of a tape spiral rigidly connected to the shaft with a constant pitch of turns, and the dispensing section is in the form of a cylindrical compression spring placed on the shaft from the side of the discharge pipe, one end of the compression spring being connected to the shaft via a sleeve with a clamp, and the free end of the spring is in contact with a tape spiral with the ability to move along its surface with adjusting changes in the pitch of the turns of the compression spring. The free end of the shaft is made in the form of a pin for rotating the shaft relative to the cylindrical compression spring with adjusting changes in the pitch of the turns of the latter (RF patent No. 92293, АСС 7/00, publ. March 20, 2010).

The disadvantage is the small flow control range.

The invention solves the problem of the regulated supply of bulk material (hereinafter material) into the working area without changing the screw speed.

The technical result is achieved by the fact that the feeder-dispenser of bulk materials, which includes an engine, a loading tank, a housing, a screw, a bearing assembly, according to the invention further comprises a coil spring, the tension of which is carried out by a solenoid, the electronic control unit controls the solenoid and engine (ECU ), while the excess material passing through the gaps formed by the coils of the spring is poured into the collection.

The figure 1 shows a schematic diagram of a feeder-dispenser.

The figure 2 shows the feeder-dispenser at the time of regulating the flow.

Bulk material feeder-feeder consists of a loading reservoir 1, a bearing assembly 2, a housing 3, a coil spring 4, an engine 5, a screw 6, a solenoid 7, an ECU 8, a collection 9.

The device operates as follows.

The engine 5 transmits torque to the screw 6, which has a cantilever fixing in the bearing assembly 2. Material from the loading tank 1 is gravity fed into the housing 3 and then by means of the screw 6 into the coil spring 4.

The ECU 8 controls the engine 5 and the solenoid 7, which in turn pulls or releases the coil spring 4, while part of the material wakes up through the gaps formed by its turns into the collector 9, thereby changing the supply of material through the main output of the feeder.

Claims (1)

Bulk material feeder-feeder, which includes an engine, a loading tank, a housing, a screw, a bearing assembly and a main feeder output, characterized in that the feeder-feeder additionally contains a coil spring, the tension and release of which is carried out by a solenoid, the solenoid and the motor control an electronic control unit, while excess material passing through the gaps formed by the coils of the spring is poured into the collection.

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