SU781162A1 - Loose material lifter - Google Patents

Description

I

The invention relates to devices for the vertical transport of powdered and fine-grained materials and can be used in various industries, for example, in construction for transporting cement.

Famous lift for bulk materials, which has a tank loading pipe for a material, the upper and lower parts of which are connected by an elastic element, an air chamber with a porous partition connected to a compressed air source, a transport conduit and an exciter 1.

A disadvantage of the known elevator is that the transportation of material is associated with a high consumption of compressed air, the production of which requires a large amount of electricity, and a high throughput filter is required to clean the compressed air.

The purpose of the invention is to reduce the energy consumption for transportation of the material.

This goal is achieved by the fact that the lower part of the tank has a bottom with a tapered bore and is provided with an additional, elastic element connecting it to the air chamber, and the outlet end of the loading nozzle is stirred: inside the tank coaxially with the tapered bore and provided with an elastic flange fixed on it, blocking the aforementioned hole, wherein a valve consisting of a vertical rod, one end of which is fixed in the air chamber, and conical is installed coaxially with it under the outlet opening of the loading nozzle; A head mounted on the other end of the rod with the possibility of reciprocating movement along it, the air chamber being provided with a connecting pipe with the atmosphere with a check valve.

The goal is also achieved by the fact that the taper of the hole in the bottom of the container is not less than the natural fragility of the slope of the material being transported.

In addition, there are no air exhaust ducts in the valve head.

At the same time, the valve is provided with a cover protecting the above-mentioned channels, attached to the bottom surface of the conical head to the rod.

In order to ensure a smooth impact of the vibration impulses on the capacitance, the latter is provided with horizontal platforms fixed on the outer surface of its lower part, on which vibration exciters are mounted symmetrically relative to the vertical axis of the capacitance, in number at least two.

In order to ensure complete cleaning of the container from the material, it is equipped with side dischargers mounted in the lower part of the container and having discharge pipes with elastic inserts. FIG. 1 shows a lift of bulk materials, a general view; in fig. 2 is a section BB in FIG. one; in fig. 3 shows a section B-B in FIG. one; in fig. 4 is a diagram of the connection of the hoist with the equipment of the cement warehouse.

The lift for bulk materials contains a container for a material consisting of the upper part 1 and the lower part 2, interconnected by an annular elastic element 3 representing a metal or rubber bellows, the lower part 2 of the container by means of another elastic element 4 connected to the airfoil 5, microporous septum 6.

On the outer surface of the lower part of the tank there are platforms 7, by which it rests on the bracket 8 of the frame 9 through springs 10. On platforms 7, vibration exciters 11 of directional action, interconnected by shaft 12 and actuated by drive 13, are installed symmetrically with respect to the vertical axis of the tank.

To the top of the tank attached transport pipeline 14.

The tank has in the lower part of the bottom 15 with a tapered bore, the conicity of which is not less than the natural angle of slope of the pumped material.

The bottom 15 and microporous septum 6 form the discharge chamber 16.

The container has a loading nozzle 17, the outlet end 18 of which is placed inside the container coaxially with the tapered hole of the bottom 15. The nozzle 17 is rigidly fixed in the wall of the upper part 1 of the container.

At the outlet end of the loading nozzle, a flange 19 of elastic material is fixed, blocking the opening in the bottom 15 of the container, and to block the outlet opening of the nozzle 17, a valve consisting of a rod 20, a fixture, is installed below it. one end in the air chamber 5, and the conical head 21 mounted on the rod with the possibility of reciprocating movement along it.

In the valve head 21, there are channels a, which exhaust air from the superstructure space when the conical head moves down the rod 20. The outlets of the channels a and the rod 20 are protected by a cover 22. K

aerodist 5 is connected to the pipe 23 with a check valve that supplies air from the atmosphere. In the lower part 2 of the tank, two side unloaders 24 are installed, the discharge pipes of which have elastic inserts 25 and are connected to the receiving chamber 26 of the pneumatic screw feeder 27. The air chamber is connected via a valve 28 to a source of compressed air.

The feed inlet 17 is connected via an air-cutter 29 to the receiving hopper 30. The transport pipeline 14 enters the precipitator-bunker 31 with the exhaust manifold 32. The precipitator-bunker is connected by pipelines 33 to silage banks 34.

The lift works as follows.

Initially, the cement from the receiving hopper 30 is fed through the airwell 29 to the patrol-side 17. The valve head 21 is lowered under the weight of the cement and the cement fills the discharge chamber 16.

Then, the actuator 13 of the exciters 11 is started, and the lower part 2 of the container begins to oscillate. When it moves down, the volume of the discharge chamber 16 and the cement sharply decrease, affecting the conical valve head 21, squeezes its top and enters the container. At the same time, the valve closes the outlet opening of the nozzle 17. As the lower part of the tank moves upward, the volume of chamber 16 increases, and since part of the cement has squeezed into the tank, it is under the heads. The valve forms a discharged space and, under the weight of the cement column, is pressed down, opening the passage to the cement.

At the same time, the atmospheric air from the air chamber 5 through the microporous partition 6, compressed during the previous run of the lower part of the tank downwards, enters the chamber 16 when the valve 28 is closed, the cement layer above the partition 6 is aerated. The flange 19 closes the opening of the bottom 15, not allowing Wash cement from the tank back into chamber 16.

Upon subsequent downward movement of the lower part of the tank, the next portion of cement enters it, lifting the previous portion up. After the transport pipeline 14 is completely filled, the cement is poured into the precipitator bunker 31, from where it enters the silo cans 34 and the concrete mixing plant through pipelines 33 .

To clean the container from the cement residue, open the side unloaders 24 and activate the exciters 11. The cement spills into the receiving chamber 26 of the pneumatic screw elevator 27, which feeds the cement into a bunker-damper (not shown).

Claims (6)

Cleaning cement residue from chamber 16 is carried out by supplying compressed air under a microporous partition 6. With the valve 28 open, the compressed air entering the chamber 16 aerates the cement above the partition and supplies it via pipeline 14 to the precipitator hopper 31. Under the influence of compressed air valve head 21 closes the outlet port of the pipe 17. From the hopper 31, the air through the pipe 32 through the filter (not shown) escapes into the atmosphere. Claim 1. Bulk material elevator, predominantly cement, containing a material tank with a loading nozzle, the upper and lower parts of which are connected by an elastic element, an air chamber with a porous partition connected to a source of compressed air, a transport pipeline and a vibration exciter, characterized in that, in order to reduce the energy consumption for the transportation of material, the lower part of the tank has a bottom with a tapered hole and is equipped with an additional the elastic element connecting it with the air chamber, and the outlet end of the inlet nozzle is placed inside the tank coaxially with the tapered hole and provided with an elastic flange fixed to it, overlapping the aforementioned orifice, with a valve installed under the outlet nozzle of the inlet nozzle. vertical rod, one end of which is fixed in the air chamber, and a conical head mounted on the other end of the rod with the possibility of reciprocating along non The air chamber is equipped with a connecting pipe with an atmosphere with a non-return valve. 2. An elevator according to claim 1, characterized in that the taper of the hole in the bottom of the container is not less than the natural angle of the transported material. 3. An elevator according to claim 1, characterized in that air vent channels are provided in the valve head. 4. A lifter according to claim 3, characterized in that the valve is provided with a sheath enclosing the aforementioned channels attached to the lower surface of the conical head and to the rod. 5. A lifter according to claim 1, characterized in that, in order to ensure a uniform impact of the vibration impulses on the capacitance, the latter is provided with horizontal platforms fixed on the outer surface of its lower part, on which at least two are mounted symmetrically with respect to the vertical si capacitance. 6. A lifter according to claim 1, characterized in that, in order to ensure complete cleaning of the container from the material, it is equipped with side dischargers mounted in the lower part of the container and having discharge connections with elastic inserts. Sources of information taken into account for the expertise 1. Japanese Application No. 51-35312, cl. B 65 G 53/04, 1972 (prototype). L / FIG.