RU171107U1 - DRYER DRUM - Google Patents

Abstract

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. The dryer drum includes a loading section with a receiving screw attachment located in it, a middle section with screw lifting chain blades placed in it from longitudinal freely suspended chains, a discharge section with lifting blades placed in it, which are bucket-shaped and arranged in rows with partial overlapping of the blades between the rows. The dryer drum in the middle section contains chain pendants in the form of chains fixed at one end. The technical result is to reduce the formation of a stagnant zone of raw materials in the discharge section of the drying drum. 2 s.p. f-ly, 1 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 the unloading section of the drum, lifting chain blades made of transverse chains pick up only large fractions of the dried raw material, and the small fraction falls through the gaps between the transverse chains. Also in the discharge section, the lifting chain vanes are arranged in rows, between which gaps are formed. Dried raw materials may fall into these gaps. The raw material that has fallen through the gaps and fallen through the cracks between the transverse chains remains in the lower part of the drum, weakly contacts the flow of hot air and does not advance to the discharge chamber. This, in turn, leads to the formation of a stagnant zone of raw materials in the discharge section of the drum, worsening the efficiency of the drying drum.

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

The technical result is to reduce the formation of a stagnant zone of raw materials in the discharge section of the drying drum.

The technical result is achieved due to the fact that a drying drum is proposed that includes 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 located in it made bucket-shaped and arranged in rows with partial overlapping of the blades between the rows. The dryer drum in the middle section contains chain pendants in the form of chains fixed at one end.

The utility model is illustrated by the following graphic material.

In FIG. 1 shows a sectional dryer drum.

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.

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 is transported by air flow into the discharge section 4 of the drying drum onto bucket-shaped lifting blades 8. The lifting blades 8 lift and sprinkle the material, while the material is actively in contact with hot air, which contributes to its drying, and breaks up into a smaller fraction. When the material reaches a certain degree of dryness, it is picked up by the air flow and carried away to the discharge zone (not shown). Due to the fact that the lifting blades 8 are bucket-shaped and arranged in rows with partial overlapping of the blades between the rows, there is a complete capture of the material when it is lifted and the formation of stagnant zones from a small fraction of the material in the discharge section of the drum is excluded, as this happens in the prototype.

Thus, the proposed design solution allows to increase the efficiency of the drying drum and reduce the likelihood of the formation of a stagnant zone of raw materials in the discharge section of the drum.

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 located therein from longitudinal freely suspended chains, an unloading section with lifting blades placed therein, characterized in that the lifting blades are in the unloading the parts are bucket-shaped and arranged in rows with partial overlapping of the blades between the rows. 2. A drying drum according to claim 1, characterized in that the receiving-screw nozzle is made in the form of sheet screw-like blades. 3. The dryer drum according to claim 1, characterized in that the middle section contains chain pendants in the form of chains fixed to one end.

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