RU159268U1 - Fine fuel dispenser - Google Patents

Abstract

A fine fuel metering feeder comprising a main hopper with a rotor, an additional hopper, a shutter separating the hopper and made in the form of a gate, and an air supply pipe for transporting fuel, characterized in that it contains air supply pipelines to said hoppers made with mounted on by valves and connected to the air supply pipe for transporting fuel.

Description

The utility model relates to pneumatic transport and may find application for the transport of finely dispersed materials to the cupola.

Known feeder-dispenser [1, p. 282], consisting of a chamber, a loading hopper, a chamber neck, a throat valve with a shutter, a main compressed air supply pipe, additional tangential compressed air supply pipes and an output pipe for supplying fine material to the process unit using compressed air.

After filling the chamber with a dispersed mixture, compressed air is fed into the chamber through the main supply pipe and additional tangential supply pipes. A flap valve under pressure of compressed air closes the neck of the chamber, compressed air, brought tangentially, twists the dispersed mixture and pushes it through the outlet pipe into the process unit. The disadvantage of this design is the uneven operation of the feeder due to the location of the valve inside the neck, which causes the valve to engage after relieving pressure from the surface layer of the moist dispersed material that has grown on the walls of the feeder. In this regard, the melting technology is disrupted, the furnace productivity and the temperature of the smelted metal decrease.

Closest to the proposed utility model is a pneumatic transport feeder of finely dispersed materials [2], containing a chamber with a neck for loading materials, equipped with a valve with a shutter in the form of a plate, a pipe of the main supply of compressed air, pipes of an additional tangential supply of compressed air, additionally contains a second chamber with a neck in the form of a truncated parallelepiped located inside the chamber of the feeder, as well as a second pipe of the main supply of compressed air, while both pipes of the main and compressed air are arranged to contact with each flap valve neck, except this includes sensors that capture the upper levels of the materials in the grist chambers. The main drawback of the design is the complexity of the design, the likelihood of frequent failure of the hopper valves, and therefore a violation of the technology of the melting mode.

The objective of the utility model is to simplify the design and provide a stable supply of a given amount of finely dispersed fuel using a metering feeder into a cupola.

To do this, the finely divided fuel feeder-dosing unit, including the main hopper with a rotor, an additional hopper, a shutter separating the hopper and made in the form of a gate, and an air supply pipe for transporting fuel, contains air supply pipelines to the said bunkers, made with valves and mounted on them connected to the air supply pipe for transporting fuel.

The drawing shows the inventive feeder-dispenser.

The device consists of: cupola - 1; the main bunker of dusty materials - 2; rotor - 3; cavities. 4 rotors; additional bunker of dusty materials - 5; tuyeres - 6 blast connected to the pipeline 7 for supplying compressed air; backpressure pipelines of the main and additional bunkers - 8, 9 for supplying air to the bunkers; valves of backpressure pipelines of the main and additional bunkers - 10, 11; gate - 12; additional hopper covers - 13.

The work of the feeder-dispenser is as follows. In the initial position, the additional hopper 5 of the dispenser is filled with material, and the gate valve 12 in the open position. Getting started: the dispenser rotor 3 is in the closed position, the pipeline valve for the additional hopper 11 is in the open position, the valve for the dispenser 10 is in the closed position. Air flows into the tuyere 6 through the blast pipe 7. At the same time, air enters the back pressure pipe of the additional hopper 9 which carries out the mixing of materials in the additional hopper 5. From the start of the blast, the rotor of the dispenser 3 starts a rotational movement, the rotor speed is regulated. Under the influence of air pressure from the backpressure pipe 9 and gravity, the fuel particles enter the rotor cavity 4. During rotation, the rotor periodically switches to the open position and spills the material into the blast pipe 7. Particles of material are transported into the tuyere 6 of the cupola 1 by the air pressure coming from fan. When the additional hopper 5 is emptied, the gate valve 12 is turned to the closed position, valve 11 is turned to the closed position, and valve 10 is in the open position, to ensure air supply to the main hopper 2. To replenish the additional hopper with dusty material, the cover of the additional hopper 13 opens, in the additional hopper 5 is filled with dusty material, after filling the hopper lid is closed. Valve 10 is moved to the closed position, valve Yves is open, and the gate valve is open. Thus, the process of replenishing silos with finely dispersed material is periodically repeated.

Thus, the use of the inventive feeder-dispenser provides a predetermined amount of fine dusty materials to the cupola, which gives a stable flow of the melting process.

Information sources

1. P.N. Aksenov. Foundry equipment. M .: Mechanical Engineering, 1977.

2. RF patent for utility model No. 150948, application No. 2014139768.

Claims (1)

A fine fuel metering feeder comprising a main hopper with a rotor, an additional hopper, a shutter separating the hopper and made in the form of a gate, and an air supply pipe for transporting fuel, characterized in that it contains air supply pipelines to said hoppers made with mounted on by valves and connected to the air supply pipe for transporting fuel.

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