RU171108U1 - DRYER DRUM - Google Patents

Abstract

The invention relates to devices for drying wet material and, in particular, is intended for drying bulk materials of a layered and fibrous form, for example, chicken droppings. The dryer drum includes a loading section with a receiving screw attachment located in it, a middle section with screw lifting chain blades located in it from longitudinal freely suspended chains, an unloading section with lifting blades located in it, while the drying drum contains a disk in the discharge section located across the direction of air flow. The technical result is to improve the drying of the material to be dried. 2 s.p. f-ly, 2 ill.

Description

The invention relates to devices for drying wet material, and is particularly intended for drying bulk materials of a layered and fibrous form, for example, chicken droppings.

A drying drum is an integral part of the drying device, which additionally includes a loading chamber, an unloading chamber and a heat generator (or gas burner). Subjected to drying, the material through the loading chamber enters the drying drum and moves along it towards the discharge chamber. The dryer drum rotates around its longitudinal axis, and the material entering the drum constantly moves along the axis of the drum, while being mixed and constantly in contact with the heat flow of air. As you move to the discharge chamber, the material dries. The drying of the material in the drum occurs due to direct contact of the raw material with the flow of hot air (gas) and the contact of the raw material with the blades and chain suspensions placed inside the drying drum.

Known dryer drum, copyright certificate SU 1084563, publ. 04/07/1984, F26B 11/04, selected as the closest analogue. The known device comprises a housing consisting of three functional sections: loading section, middle section and unloading section. In the loading section there is a receiving-screw nozzle made in the form of leaf blades and chain blades. In the middle section, chain partitions are made of alternating diametrically fixed and freely suspended chains. In the unloading section of the drum, the lifting chain vanes are made of transverse chains mounted on trims. Along the entire length of the drying drum in the intervals between the lifting chain vanes, cross-chain suspensions are made in a checkerboard pattern in the form of chains attached to both ends.

In a known drying drum, a stream of hot air drives the material to be dried directly through all sections. If the flow of hot air is strong enough, then the material will quickly overcome all sections in a direct flow and will not have time to dry.

The objective of the proposed utility model is to improve the design of the drying drum.

The technical result is to improve the drying of the material to be dried.

The technical result is achieved due to the fact that a drying drum is proposed, including a loading section with a receiving screw attachment located in it, a middle section with screw lifting chain blades placed therein from longitudinal freely suspended chains, an unloading section with lifting blades placed in it, this drying drum contains a disk in the discharge section, located across the direction of movement of the air stream. Advantageously, the disk is attached by means of supports to the inner walls of the drying drum. Mostly the disc is made of steel.

The utility model is illustrated by the following graphic materials:

In FIG. 1 shows a dryer drum in a perspective view, general view; FIG. 2 is a section AA in FIG. one.

The drying drum contains a cavity 1, consisting of three functional sections: loading section 2, middle section 3 and unloading section 4. In the loading section 2 there is a receiving-screw nozzle made in the form of sheet screw-like blades 5. In the middle section 3 there are screw lifting chain blades 6. Chain blades 6 are made of longitudinal freely suspended chains and are fixed at both ends using brackets 7. In the unloading section 4 are placed lifting blades 8, made bucket-shaped. The lifting blades 8 are arranged in rows with partial overlapping of the blades between the rows. In the middle section 3, the dryer drum comprises chain pendants 9 in the form of chains attached to one end. Additionally, the drying drum contains a disk 10 in the discharge section 4, located across the direction of movement of the air flow. The disk is attached by means of supports to the inner walls of the drying drum.

The dryer drum operates as follows.

The material to be dried through a loading chamber (not shown) enters the rotating housing 1 into the loading section 2 onto a screw-receiving nozzle in the form of helical blades 5, which moves the material into the middle section onto the screw lifting chain blades 6, which lift and sprinkle the material. When the drum rotates, the chains of the lifting chain blades 6 under their own weight collide or hit the walls of the drum and additionally hit the chain suspensions 9, due to which the material to be dried is broken into a smaller fraction and the chains are cleared of adhering material. Further, the material flows by air flow into the unloading section 4 of the drying drum onto bucket-shaped lifting blades 8. The air flow with the material hits the disk 10, resulting in turbulence. Larger particles are then thrown to the walls of the drying drum on bucket-shaped lifting blades 8, which lift and showers the material for their further drying and breaking. Small particles of material are carried away by the air flow into the vortex zone and then removed through the gap between the disk and the walls of the drying drum into the discharge zone.

Thus, the presence of the disk increases the exposure time of the material in the drying drum, which allows better drying of the material.

Claims (3)

1. A drying drum, comprising a loading section with a receiving screw attachment located in it, a middle section with screw lifting chain blades placed therein from longitudinal freely suspended chains, an unloading section with lifting blades placed therein, characterized in that it contains a disk in the unloading sections located across the direction of air flow. 2. The dryer drum according to claim 1, characterized in that the disk is attached by means of supports to the inner walls of the dryer drum. 3. The drying drum according to claim 1, characterized in that the disk is made of steel.

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