阅读说明：本技术 空心桨叶干燥机返料结构 (Material returning structure of hollow blade dryer ) 是由 任红兵 党梅 于 2018-06-14 设计创作，主要内容包括：本发明涉及一种空心桨叶干燥机返料结构。设置有使物料从干燥机(1)的出料口(2)重新返回进干燥机(1)的回输装置(3)。本发明供一种物料返回进料端结构,该返料结构可以使部分干燥物料返回进料端,与湿物料混合,降低干燥难度,更有利于物料受热均匀,避免出现干燥不均的问题。(The invention relates to a material returning structure of a hollow blade dryer. A feedback device (3) is arranged for returning the material from the discharge hole (2) of the dryer (1) to the dryer (1). The material returning and feeding end structure can return part of dry materials to the feeding end to be mixed with wet materials, reduces the drying difficulty, is more beneficial to uniformly heating the materials and avoids the problem of nonuniform drying.)

1. The material returning structure of the hollow blade dryer is characterized in that a material returning device (3) which enables materials to return into the dryer (1) from a discharge hole (2) of the dryer (1) is arranged.

2. The hollow blade dryer return structure according to claim 1, characterized in that the return means (3) comprise a return pipe (31) and a return port (32) for dropping material into the dryer (1); the feedback port (32) is communicated with the feed port (4) of the dryer (1).

3. The hollow blade dryer material returning structure according to claim 2, characterized in that the feedback port (32) and the feed port (4) are coaxially arranged and are positioned outside the feed port (4), the side part of the feed port (4) is provided with an annular notch, and the material passes through an interlayer formed by the feedback port (32) and the feed port (4) and enters the dryer (1) from the annular notch.

4. The hollow blade dryer returning charge structure of claim 2, wherein a crushing device for crushing the material is arranged in the returning pipe (31).

5. The hollow blade dryer material returning structure according to claim 1, characterized in that a heat insulating layer is arranged outside the dryer (1) and a jacket for introducing a heat medium is arranged outside the dryer.

6. Hollow blade dryer return structure according to claim 1, characterized in that the dryer (1) is provided with a screw conveyor.

Technical Field

The invention relates to a material returning structure of a hollow blade dryer, and belongs to the technical field of drying equipment.

Background

The phenomenon that part of materials are excessively dried and part of materials do not meet the drying requirement can occur in the drying process of the existing hollow blade, and the phenomenon of physical property change can occur on the excessively dried materials, so that the color or the particle size is changed; materials which do not meet the drying requirements cannot be directly packaged, secondary drying is needed, and energy, labor and time are wasted.

Disclosure of Invention

Aiming at the defects, the invention aims to provide the material returning structure of the hollow blade dryer, which has a reasonable structure, can fully dry materials and avoid the problem of uneven drying.

The technical scheme adopted by the invention is as follows: the invention is provided with a feedback device (3) which returns the material from the discharge opening (2) of the dryer (1) back into the dryer (1).

The feedback device (3) comprises a feedback pipe (31) and a feedback opening (32) which enables the materials to fall into the dryer (1); the feedback port (32) is communicated with the feed port (4) of the dryer (1).

The material feeding device is characterized in that the feedback port (32) and the feeding port (4) are coaxially arranged and are positioned outside the feeding port (4), an annular notch is formed in the side portion of the feeding port (4), and materials pass through an interlayer formed by the feedback port (32) and the feeding port (4) and enter the dryer (1) from the annular notch.

A smashing device for smashing the materials is arranged in the feedback pipe (31).

The dryer (1) is externally provided with a heat insulation layer and a jacket for introducing a heat medium.

The dryer (1) is provided with a spiral conveying device.

The invention has the advantages that: 1) the material returning and feeding end structure can return part of dried materials to the feeding end to be mixed with wet materials, so that the drying difficulty is reduced, the materials are heated uniformly, and the problem of non-uniform drying is avoided;

2) according to the invention, through the arrangement of the structures of the feedback port and the feed port, the feedback material enters the drier at a certain speed and is fully and uniformly mixed with the new material, and meanwhile, the feeding mode of the feedback material can form a certain collision with the new material, so that the material is smashed, and the drying effect of the material is further improved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure, 1 is a drier, 2 is a discharge hole, 3 is a feedback device and 4 is a feed hole;

31 is a feedback pipe, 32 is a feedback port.

Detailed Description

The invention is provided with a feedback device 3 for returning the material from the discharge opening 2 of the dryer 1 back into the dryer 1.

The feedback device 3 comprises a feedback pipe 31 and a feedback port 32 for dropping the materials into the dryer 1; the feedback port 32 communicates with the feed port 4 of the dryer 1.

The feedback port 32 and the feed port 4 are coaxially arranged and are positioned outside the feed port 4, an annular notch is formed in the side part of the feed port 4, and materials pass through an interlayer formed by the feedback port 32 and the feed port 4 and enter the dryer 1 from the annular notch.

A smashing device for smashing the materials is arranged in the feedback pipe 31.

The drier 1 is externally provided with a heat insulation layer and a jacket for introducing a heat medium.

The dryer 1 is provided with a screw conveyor.

The working process of the invention is as follows: the material conveying uses closed screw conveying; a conveying screw is externally provided with a jacket and a heat-insulating layer, and a jacket heat source uses steam condensate water to ensure that materials enter a feeding end at high temperature, so that the phenomenon of secondary heating is avoided; and the feeding end mixing device is used for mixing dry materials and wet materials.

According to the invention, the pressurizing device is further arranged on the path of the return pipe 31, so that the pressure and the speed of the returned materials are improved, the returned materials are enabled to form more powerful impact on the new materials, the returned materials and the new materials are uniformly mixed, meanwhile, the new materials are further crushed, and the phenomenon of hardening of the materials is avoided.