RU2484000C1 - Movable spiral-screwed spindle - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: feeder is intended for unloading bulk materials from bins. The feeder is connected with engine and is mounted on barrow. Feeder casing ends with flange to be attached to bin. At the bottom of feeder there is fitting pipe for gravity-flowing pipe connecting. Actuating element is made as protruding from casing spiral screw with variable outer diameter evenly decreasing to its end with loop instead of the last wind.

EFFECT: higher evenness and lower energy consumption of unloading from bin, increase in durability of feeder.

3 dwg

Description

The device relates to the field of unloading bulk materials from silos.

A bunker device is known consisting of a container ending with an outlet funnel, a screw drive feeder for unloading bulk materials from a hopper in the form of a screw (JP 62218332, 03.20.1986; CA 2020294, 01/06/1991; JP 05147746, 05/14/1992; US 5181804, 26.01 .1993; US 5333762, 08/02/1994; JP 11189779, 12.26.1997; AU 728327, 07.23.1998; US 6062720, 05.16.2000).

The disadvantage of this device is the increased metal and energy intensity associated with the use of a screw with constant geometric parameters along its entire length as a working member of the feeder.

Known bunker device containing a container for bulk materials having an outlet funnel, a screw drive feeder for unloading bulk materials from the hopper in the form of a spring conveyor (RU 2159531 C1, 11.27.2000).

A disadvantage of the known device is the formation of a stagnant zone, which makes it difficult to unload bulk material, leading to high energy and working hours.

There are known options for a bunker device that differ in geometrical parameters of the working bodies of spiral screw feeders that are rigidly attached to the tank (RU 87415, 10.10.2009; RU 89087, 11.27.2009; RU 89088, 11.27.2009).

In a number of technological processes, hopper devices are used to a greater extent for storing bulk material, which leads to idle drive equipment. On the other hand, the dismantling and installation of the feeder, associated with the breakdown of the drive or the working body, require a lot of labor and time.

There is a mobile screw feeder, consisting of a wheelchair, the frame of which is mounted on two wheels, and a screw aggregated with a drive (AT 391308, 03/15/1990). The specified device is the closest analogue.

A disadvantage of the known device is the lack of fastening with a hopper, which puts the risk of contact runout of the screw and the walls of the tank, which leads to wear of the structural elements of the devices. The use of the auger as a working body increases the metal consumption of the mobile feeder, and also causes the formation of a stagnant zone, which makes it difficult to unload bulk material, leading to high energy and working hours.

The technical result of the claimed invention is to increase the efficiency of technological processes and procedures for unloading bins. This is achieved by the fact that the aggregate motor and feeder are placed on the wheelbarrow. The casing of the feeder ends with a flange for attachment to the hopper, and from the bottom there is a pipe for attaching a gravity pipe. Partially exposed working body of a movable spiral screw feeder is made in the form of a spiral screw with a variable external diameter, uniformly decreasing towards the end with a loop.

Distinctive features of the claimed invention are the following: the working body of the feeder is made in the form of a spiral screw with a variable external diameter, uniformly decreasing towards the end with a loop.

In Fig.1 shows a General diagram and the device of a spiral screw feeder, Fig.2 depicts a General view of the invention, Fig.3 shows a carbine with a guide cable.

A motor 15, a frame 4 and a casing 8 of the feeder with a strapping 5 and a sealant 14 are mounted on the frame 2. A spiral screw 9 is placed in the casing, which is mated to the pulley 1 by means of a shaft, a bolt 6 and a sleeve 7. The driven pulley and the driven shaft are supported by a bearing 3 mounted in the walls of the frame. The casing ends with a flange 11, the spiral screw with a loop 12. The bulk material 10 is discharged through the discharge pipe 13.

The device operates as follows. The operator rolls a movable spiral screw feeder to the hopper. In the technological hole of the hopper there is a guide cable, moored from the back of the tank, with a carabiner with a curved latch on. Fixing the loop 12 of the spiral screw 9 with a carabiner, the engine 15 is switched on in low-speed mode. At the same time, two operations are performed: the spiral screw is inserted into the technological hole of the hopper, which is boring the bulk mass 10, and manually pulling the cable into the rear technological hole of the hopper. After the engine 15 is turned off and the carabiner with a locking nut is mated with a bearing mounted in the back wall of the hopper, the flange 11 is attached to the wall of the tank.

Next, the engine 15 operates in a predetermined sequence of modes, transmitting torque through an intermediate flexible connection to the spiral screw 9. The bulk material 10, falling into the inter-turn space, moves along the hopper trough to the casing 8, is transported to the discharge pipe 13. The resonant runout of the feeder is prevented by the sealing system 14, by the strapping 5 and additionally damped by the frame 4 and the frame 2. By reducing the diameter of the spiral screw 9, the bulk material 10 is captured along the entire length of the chute, rather than lko from the rear wall of the hopper, which resulted in the formation of stagnant zones near the front wall. Dismantling the device is carried out similarly with the installation, the steps in the reverse order.

Distinctive features of the invention can improve the uniformity of the emptying of the hopper, increase the service life of the feeder with lower metal consumption, simplifying the structural design of the working body and reducing the energy consumption of the unloading process.

Claims (1)

A mobile spiral screw feeder containing a wheelbarrow with an aggregated motor and a feeder, the casing of which ends with a flange for attachment to the hopper, and from the bottom there is a pipe for attaching a gravity pipe, and a partially exposed working body, characterized in that the working body is made in the form of a spiral screw with a variable outer diameter, evenly decreasing towards the end with a loop instead of the last turn.

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