RU2749217C1 - Device for melting and heating packed bitumen - Google Patents

Abstract

FIELD: road construction.SUBSTANCE: invention relates to the production of road construction materials, namely to the preparation of bitumen in the preparation of hot asphalt concrete mixtures. The device for melting and heating packed bitumen contains a case, a receiving chamber, registers of the bitumen melting and heating unit, a storage cavity, a temperature sensor and a drain device. The pipes of the first upper cutting row of the melting block register are made of round pipes or of pipes with a cross section in the form of an isosceles triangle and have a sharp knife blade in the upper part with a height of no more than 2 cm. Each pipe of the upper cutting row is laid on a round pipe of the second row of the melting block register. Each subsequent row of pipes of the melting block register, starting from the third, is displaced in parallel in the plane of the row relatively to the pipes of its upper row by no more than the radius of the round pipes.EFFECT: technical result of the invention is an increase in the productivity of the device for melting and heating packed bitumen.1 cl, 2 dwg

Description

Packaged bitumen is heated in devices for melting packaged bitumen (bitumen smelters).

The invention relates to the production of road building materials, namely the preparation of bitumen in the preparation of hot asphalt mixtures.

A melting device is known for melting and heating solid and viscous petroleum products used in road and construction works, among which devices are known containing means for supplying a coolant (hot gas, water vapor, liquid), including pipes serving for supplying a coolant (see patent DE 29621829 published 02.26.1998, patent CN 2048871 published 06.12.1989).

Known device for melting packaged solid and viscous petroleum products, mainly polymer-modified bitumen (Patent RU No. 130605, IPC S10C 3/12, E01C 19/08, publ. 07/27/2013), containing a body, a melting unit and a storage cavity with mechanical and / or hydraulic stirring means, oil registers of the melting unit and storage cavity, shut-off and control valves.

The closest technical solution is a device for melting solid and viscous petroleum products packed in a container (Patent RU No. 107530, IPC E01C 19/08, publ. 08/20/2011), containing a body, a melting unit and a storage cavity, oil registers of the melting unit and storage cavity, temperature sensor and drain device.

However, as follows from the results of operation, this technical solution has the following disadvantages:

- low speed of container unloading, due to the significant overall dimensions of the cross-section of the upper register pipes, which create great resistance when moving bitumen;

- exclusion from work in the initial period of pipes of the lower register due to the low rate of bitumen flow into the storage cavity.

The objective of the present invention is to increase the productivity of the device for melting and heating packaged bitumen.

The essence of the invention lies in the fact that a device for melting and heating packaged bitumen containing a housing, a receiving chamber, registers of the bitumen melting and heating unit, a storage cavity, a temperature sensor and a drain device, and the pipes of the first upper cutting row of the melting unit register are made of round pipes or from pipes with a cross-section in the form of an isosceles triangle and have a sharp knife blade in the upper part no more than 2 cm high, each pipe of the upper cutting row is laid on a round pipe of the second row of the register of the melting block, and each subsequent row of pipes of the register of the melting block, starting from the third, is displaced parallel to plane of the row relative to the pipes of its upper row by no more than the radius of the round pipes.

The technical result.

The technical result is achieved by increasing the contact area of bitumen with heating elements during melting by cutting a block of bitumen with an upper cutting row of round pipes or pipes with a cross-section in the form of an isosceles triangle with knives into separate segments and sliding them when moving bitumen into the storage cavity along the surface of pipes of displaced rows relative to its upper row of the register of the melting unit, which increases the performance of the device.

The specified task is achieved:

- the creation of a melting block with an upper cutting row of round pipes or of pipes with a cross-section in the form of an isosceles triangle, having sharp knives, which provides a quick division of the bitumen block into strips of small width due to the small area of contact of the upper cutting row with the bitumen block;

- displacement of the rows of the register of the melting unit starting from the third row in the plane of the row relative to its upper row, which provides an increase in the contact area of the heating elements with the cut strips of bitumen moving into the storage cavity.

The essence of the invention is illustrated by drawings, where FIG. 1 shows a device for melting and heating packaged bitumen with an upper cutting row of the register of a melting unit made of round pipes, and FIG. 2 with the upper cutting row of the register of the melting unit made of pipes with a cross-section in the form of an isosceles triangle.

A device for melting and heating packaged bitumen contains a housing 1, with a receiving chamber 2, a bitumen block 3, a melting register consisting of the first upper cutting row 4 of round pipes or pipes with a cross-section in the form of an isosceles triangle with knives installed on the second row 5 of round pipes, and the third and subsequent rows 6 of round pipes displaced relative to each other, a storage cavity 7 with a heating register 8, a temperature sensor 9 and a drain device 10.

The invention works as follows.

In the receiving chamber 2 of the housing 1 of the device for melting and heating the packaged bitumen on the first upper cutting row 4 from round pipes or from pipes with a cross-section in the form of an isosceles triangle with knives, a bitumen block 3 is installed. The coolant circulating inside the melting register provides heating of the register pipes walls, as well as knives of the first upper cutting row 4. Heated knives and pipes of the first upper cutting row 4, as well as pipes of the second row 5 of the melting register provide cutting of the bitumen block 3 into strips. Under the action of gravity, the strips of bitumen fall and slide over the surface of the register pipes of the third and subsequent rows 6, the bitumen melting process is carried out. Bitumen enters the heating registers 8 of the storage cavity 7. It is heated. Pumping / draining of bitumen is carried out through the drain device 10 when the bitumen reaches the required temperature, recorded by the temperature sensor 9.

The use of round pipes or pipes with a cross-section in the form of an isosceles triangle with sharp knives in the upper part as pipes of the first upper cutting row of the melting unit provides an increase in the specific pressure on the contact area of bitumen and the register and a decrease in cutting resistance. The height of the knife is no more than 2 cm and the support of the first row of the melting unit on the second ensures high surface heating power of the upper row register tubes and knives, as well as the best cutting conditions and structural strength. The displacement of the pipes of the third and each subsequent rows of the melting unit register in parallel in the plane of the row relative to the pipes of its upper row by no more than the radius of the round pipes provides an increase in the contact area of the heating surface with the strips of bitumen, but does not create great resistance for moving bitumen into the storage cavity, which contributes to the rapid frustration and increased performance of the device.

Claims (1)

A device for melting and heating packaged bitumen, containing a housing, a receiving chamber, registers of a bitumen melting and heating unit, a storage cavity, a temperature sensor and a drain device, characterized in that the pipes of the first upper cutting row of the melting unit register are made of round pipes or pipes with a cross section in the form of an isosceles triangle and have a sharp knife blade in the upper part no more than 2 cm high, each pipe of the upper cutting row is laid on a round pipe of the second row of the register of the melting unit, and each subsequent row of pipes of the register of the melting unit, starting from the third, is displaced parallel in the plane row relative to the pipes of its upper row by no more than the radius of round pipes.

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