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Variable-screw-diameter feeding mechanism of dry type granulator

A technology of dry granulator and screw diameter, which is applied in the direction of mold extrusion granulation, etc. It can solve the problems of tablet compression quality decline, low-density materials cannot be applied, and uneven tablet compression, so as to improve the pre-compression function and solve the problem of dry The effect of legal granulation puzzles

Pending Publication Date: 2020-04-21
南京迦南比逊科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the dry granulation process of the material, the two pressure rollers remove the air in the material during the rolling process, so that the material is rolled into high-density flakes; however, the dry granulation process cannot be applied to some low-density materials, because low-density materials The particle hardness after dry granulation cannot meet the requirements of the production process, so if the material is conveyed to the middle of the two pressure rollers by the feeding screw, the material in the screw groove is pre-compressed in advance, which can solve the above problems well; at the same time In the prior art, when the material is conveyed to the end of the conveying mechanism by the conveying mechanism, there is an uneven spot, which may easily lead to uneven tableting during tableting, resulting in a decrease in the quality of the tablet, directly affecting the quality of the product

Method used

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  • Variable-screw-diameter feeding mechanism of dry type granulator
  • Variable-screw-diameter feeding mechanism of dry type granulator
  • Variable-screw-diameter feeding mechanism of dry type granulator

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A variable screw diameter feeding mechanism of a dry granulator is mainly to improve the pre-compression effect of the feeding screw, including a feeding shell 1, a feeding screw 2 and a feeding channel 3, and the feeding screw 2 is arranged in the feeding channel 3 , the feeding screw 2 adopts a variable-diameter feeding screw, including a feeding inner rod 202 and a feeding screw 203 arranged on the feeding inner rod 202, and a longitudinal feeding is formed between the variable-diameter feeding screw and the bottom of the feeding channel 3 The gap 204 , the longitudinal feeding gap 204 gradually decreases along the feeding direction of the feeding screw 2 .

[0022] In this embodiment, a stirring chamfer 205 is arranged symmetrically at the end of the feeding inner rod 202. The stirring chamfer 205 can rotate together with the feeding inner rod 202 in order to improve the uniformity of the material in the triangular area at the end of the feeding mechanism. , which i...

Embodiment 2

[0026] In this embodiment, the diameter of the inner rod 202 for feeding increases gradually along the feeding direction, and the diameter of the feeding screw 203 remains constant, as image 3 As shown, D is unchanged, d(n-7)≤d(n-6) ≤d(n-5) ≤,,,≤d(n-1) ≤dn, where n is a natural number greater than 0; Thus, the longitudinal feeding gap 204 gradually decreases along the feeding direction.

Embodiment 3

[0028] In this embodiment, the diameter of the feeding screw 203 gradually decreases along the feeding direction, and the diameter of the inner rod 202 gradually increases along the feeding direction, such as Figure 4 As shown, D(n-6)≥D(n-5) ≥D(n-4) ≥,,,≥D(n-1) ≥Dn, and d(n-7)≤d(n-6 ) ≤ d (n-5) ≤,,, ≤ d(n-1) ≤ dn, wherein n is a natural number greater than 0; thus making the longitudinal feeding gap 204 gradually decrease along the feeding direction.

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Abstract

The invention discloses a variable-screw-diameter feeding mechanism of a dry type granulator. The variable-screw-diameter feeding mechanism comprises a material conveying shell, a material conveying screw and a material conveying channel, wherein the material conveying screw is arranged in the material conveying channel, the material conveying screw is a reducing material conveying screw and comprises an inner material conveying rod and a material conveying helix arranged on the inner material conveying rod; a longitudinal material conveying gap is formed between the reducing material conveying screw and the bottom of the material conveying channel; and the longitudinal material conveying gap is gradually reduced in the material conveying direction of the material conveying screw. Comparedwith a traditional dry granulation feeding structure, the variable-screw-diameter feeding mechanism has the beneficial effects that the diameter of the material conveying screw is changed, so air inmaterials is exhausted in advance in the feeding process of the screw, the materials in a screw groove are fully compressed, and therefore, the pre-compression function of the material conveying screwof the dry type granulator is improved.

Description

technical field [0001] The invention relates to the technical field of a dry granulator feeding mechanism, in particular to a variable screw diameter feeding mechanism of a dry granulator. Background technique [0002] During the dry granulation process of the material, the two pressure rollers remove the air in the material during the rolling process, so that the material is rolled into high-density flakes; however, the dry granulation process cannot be applied to some low-density materials, because the low-density materials The hardness of the particles after dry granulation cannot meet the requirements of the production process. Therefore, if the material is conveyed to the middle of the two pressure rollers by the feeding screw, the material in the screw groove is pre-compressed in advance, which can solve the above problems well; at the same time In the prior art, when the material is conveyed to the end of the conveying mechanism by the conveying mechanism, there is an...

Claims

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Application Information

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IPC IPC(8): B01J2/22
CPCB01J2/22
Inventor 方正周真道赵冬魁江聪聪吴武通
Owner 南京迦南比逊科技有限公司