Extrusion device for pelletizer

Abstract

The invention provides an extrusion device for a pelletizer. The extrusion device includes an extrusion barrel, a screw rod-type extruder and a discharging port. The extruder comprises an extrusion shaft and an extrusion blade surrounding the extrusion shaft; and the extrusion blade gradually decreases from a feed inlet to a discharge hole. The invention has the beneficial effect that the tapered extruder and the extrusion cylinder cooperate to realize tight compression on the molding material; and the cross-sectional shape of the extrusion blade makes the raw materials be easily extruded, so as to avoid blocking caused by raw materials easily adhered on the extrusion blade. The extrusion device for the pelletizer has the advantages of simple structure, convenient maintenance, low processing cost and high production efficiency.

Description

technical field

[0001] The invention belongs to the field of granule forming equipment, and in particular relates to a granulator extrusion device. Background technique

[0002] Most of the granulators currently in use use extrusion granulation, which is mainly used for the production of pellet fuel and pellet feed. After entering the extrusion molding die, it is formed by plastic deformation and bonding. The die hole of the extrusion molding die has relatively high requirements for the molding particles, especially for the relatively high moisture content. When the moisture content is low, it will cause It is difficult to form granules, the energy consumption of the granulator is high, and when the water content is high, the water in the raw materials is heated and vaporized, and the steam generated is not discharged in time, so that the produced granules burst and produce many cracks, loose and unshaped , which brings some obstacles to the use of the granulator. Content...

Examples

Embodiment Construction

[0015] Such as figure 1 As shown, the present invention creates a kind of granulator extruding device, comprises extruding cylinder 3, screw extruder and discharge port 6, and described extruder is surrounded by extruding shaft 4 and described extruding The extruding vane 5 on the shaft is composed of the extruding vane 5 gradually decreasing from the inlet 1 to the outlet 6; the adjacent extruding vanes 5 are from the inlet 1 to the outlet 6 The direction spacing gradually decreases; the cross section of the extruding cylinder 3 gradually decreases from the feed port 1 to the discharge port 6 . Such a tapered shape gradually reduces the space of the molding raw material in the extrusion device, and the raw material is further compressed, and the air will be gradually squeezed out from the gap between the raw materials to form molding particles with uniform density and tight texture.

[0016] Such as figure 2 As shown, the cross-section of the extruding blade 5 is wide near...

technical field

[0001] The invention belongs to the field of granule forming equipment, and in particular relates to a granulator extrusion device. Background technique

[0002] Most of the granulators currently in use use extrusion granulation, which is mainly used for the production of pellet fuel and pellet feed. After entering the extrusion molding die, it is formed by plastic deformation and bonding. The die hole of the extrusion molding die has relatively high requirements for the molding particles, especially for the relatively high moisture content. When the moisture content is low, it will cause It is difficult to form granules, the energy consumption of the granulator is high, and when the water content is high, the water in the raw materials is heated and vaporized, and the steam generated is not discharged in time, so that the produced granules burst and produce many cracks, loose and unshaped , which brings some obstacles to the use of the granulator. Content...

Examples

Embodiment Construction

[0015] Such as figure 1 As shown, the present invention creates a kind of granulator extruding device, comprises extruding cylinder 3, screw extruder and discharge port 6, and described extruder is surrounded by extruding shaft 4 and described extruding The extruding vane 5 on the shaft is composed of the extruding vane 5 gradually decreasing from the inlet 1 to the outlet 6; the adjacent extruding vanes 5 are from the inlet 1 to the outlet 6 The direction spacing gradually decreases; the cross section of the extruding cylinder 3 gradually decreases from the feed port 1 to the discharge port 6 . Such a tapered shape gradually reduces the space of the molding raw material in the extrusion device, and the raw material is further compressed, and the air will be gradually squeezed out from the gap between the raw materials to form molding particles with uniform density and tight texture.

[0016] Such as figure 2 As shown, the cross-section of the extruding blade 5 is wide near...

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