SU654723A1 - Device for heating bitumen - Google Patents

Description

one

The invention relates to the field of road construction and the building industry, namely to devices for heating a bituminous material.

A device for heating bitumen and feeding it through pipes is known, in which a pulsating gas flow passes through the flame pipes and cavities between the container and the heat-insulated casing, transferring heat to the bitumen through the walls of the pipes and container 1. In such a device, the heating efficiency is insufficient due to the small area heat transfer.

It is also known a device for heating a bitumen material, comprising a container placed in a heat-insulated casing with L-shaped partitions installed under its outlet, a flame tube and a fuel combustion chamber with a pulsating gas flow nozzle 2.

The disadvantage of such a device is that the free flow of bitumen is prevented by foreign inclusions rolling down under and between the L-shaped partitions, which reduces productivity due to the complex removal of foreign inclusions.

The purpose of the invention is to increase productivity by accelerating the removal of foreign inclusions. The goal is achieved by the fact that the device

the container with the L-shaped partitions installed under its heat-insulated casing, the flame tube and the fuel combustion chamber with a pulsating gas flow nozzle, is equipped with a storage device located under the L-shaped bulkheads with supporting surfaces, and the combustion chamber and the heat tube are located under the drive, and the capacity is freely supported on the supporting surface of the drive.

FIG. 1 shows the proposed device, a longitudinal section; in fig. 2 shows section A-A in FIG. one.

On the supporting surfaces 1 of the accumulator 2, enclosed in a heat-insulated casing 3, a capacity 4 is installed freely, the casing heat insulating casing 5, a lid 6 for loading pieces of bitumen and L-shaped

baffles 7, installed under the outlet openings of the container 4. Ceregorodn 7 are formed by channels 8 for the passage of gas, communicating with gas ducts 9 and 10 of the container 4 and

Through channels I and 12 with a flame tube 13, the latter and the fuel combustion chamber 14 are installed under the bottom of accumulator 2. The outlet duct 10 has an exhaust pipe 15. Outside the device, a fuel tank 16 is installed, connected by pipeline 17 to the nozzle 18 of the fuel combustion chamber 14. A crane 19 is used to regulate the fuel supply, a crane 20 installed in accumulator 2 is used to take off heated bitumen.

The device works as follows.

Lump bitumen through the hole blocked by lid 6 is loaded into tank 4. Fuel from tank 16 is fed through pipe 17 to nozzle 18. Igniter (not shown) ignites fuel. A crane 19 adjusts the fuel supply until the combustion chamber 14 is switched to a pulsating mode of operation. The hot gases successively pass through the flame tube 13, channels I and 12 of accumulator 2, channels 8, gas ducts 9 and 10 of tank 4 and are thrown out through exhaust pipe 15. Bitumen pieces are softened in the upper part of tank 4, melt intensively in the zone of the largest heat transfer due to L-shaped partitions 7, then the heated bitumen flows freely through the gaps into the drive 2, where the required temperature is maintained. The prepared bitumen through the valve 20 is taken from the drive 2.

For periodic cleaning of 4 ps tank

the bottom of the accumulator 2, the container 4 is removed from the supporting surfaces 1 and the gaps between the L-shaped partitions are cleaned.

Due to the implementation of the device with the drive and removable capacity, it is cleaned of foreign inclusions with a small expenditure of time, which contributes to improved performance and savings in maintenance costs.

Claims (2)

1. USSR author's certificate No. 244169, cl. E 01C 19/08, 1967. 2. USSR author's certificate No. 536276, cl. E 01 C 19/08, 1973. w