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Wood powder conveying hopper and feeding system for wood plastic composite sheet material production

A board production and wood-plastic composite technology, applied in the field of feeding systems, can solve the problems of easy sticking to the inner wall of the hopper, continuous accumulation, and clogging, and achieve the effects of reducing clogging, improving quality, and improving work efficiency

Inactive Publication Date: 2014-06-04
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, in the existing hopper structure design, the fan that can generate feeding power is usually directly arranged on the top or bottom of the hopper. Make the discharge opening of the hopper close to the cavity of the hot extrusion mold, and at the same time, the diameter of the discharge opening of the hopper must be limited. Because of this, the wood powder mixture of the existing hopper is easy to stick to the inner wall of the hopper during actual use. On, continue to accumulate until the wood flour mixture clogs the discharge port of the hopper

Method used

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  • Wood powder conveying hopper and feeding system for wood plastic composite sheet material production
  • Wood powder conveying hopper and feeding system for wood plastic composite sheet material production
  • Wood powder conveying hopper and feeding system for wood plastic composite sheet material production

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Such as figure 1 As shown, the wood powder conveying hopper for the production of wood-plastic composite boards provided by this embodiment includes a hopper body 1, and the bottom end of the hopper body 1 is provided with a discharge port 1-2 with a switch valve 2, The side wall 1-1 of the above-mentioned hopper body 1 is surrounded by a circle of sealed air duct 3, and a blower is connected to the position of the air inlet 3-1 of the sealed air duct 3. The side wall 1-1 of the above-mentioned hopper body 1 is closely arranged. There are ventilation holes 4 through the inner surface 1-3 and the outer surface 1-4 of the side wall 1-1, and the above-mentioned ventilation holes 4 are all obliquely facing the feeding port 1-2 at the bottom of the hopper body 1, and the hole diameter of the ventilation holes is to 1 cm.

[0018] Such as Figure 4 As shown, the present embodiment also provides a feeding system that adopts the wood powder conveying hopper for the production...

Embodiment 2

[0021] The wood powder conveying hopper provided by the present embodiment, its general structure domain embodiment 1 is consistent, as figure 2 and image 3 As shown, but the ventilation holes 4 in this embodiment are arranged in a rectangular array on the side wall 1-1 of the hopper body 1, wherein the outer surface openings of two adjacent ventilation holes 4 are between the center of the 4-1 center and the inner surface The vertical distance h between the center of mouth edge 4-2 1 Both are 4.5 centimeters, and each of the above-mentioned ventilation holes 4 faces the discharge port 1-2 at the bottom of the hopper body 1 at an oblique angle of 30°, and the outer surface opening of each ventilation hole 4 is along the center and inner surface opening of the 4-1 The horizontal spacing w and the longitudinal spacing h between the centers along 4-2 2 equal and both are 1.5 cm. In this embodiment, the wind generated by the wind source 5 passes through the ventilation hole 4...

Embodiment 3

[0023] The general structure of the wood flour conveying hopper provided in this embodiment is consistent with that of Embodiment 2, but the outer surface openings of the adjacent two ventilation holes 4 on the side wall 1-1 of the hopper body 1 in this embodiment are along the center of the 4-1 The vertical distance h between the center of the inner surface and the mouth along the 4-2 1 Both are 5.2 centimeters, the lateral spacing w and the longitudinal spacing h between the center of the outer surface mouth of each ventilation hole 4 along the center of 4-1 and the center of the inner surface mouth along 4-2 2 equal, and both are 1.8 cm, and each of the above-mentioned ventilation holes 4 faces the discharge port 1-2 at the bottom of the hopper body 1 at an oblique angle of 45°.

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Abstract

The invention discloses wood plastic composite sheet material production equipment, and especially refers to a wood powder conveying hopper in wood plastic composite sheet material production; the wood powder conveying hopper comprises a hopper body; the bottom of the hopper body is provided with a feed opening having a switch valve; a sealing air path is arranged around a side wall of the hopper body; an air inlet position of the sealing air path is connected with an air source; the side wall of the hopper body is tightly provided with air through holes penetrating an inner surface and an outer surface; the air through holes are arranged facing the feed opening of the bottom of the hopper body in an oblique manner; the hopper of invention solves the plugging technical problem of wood powder conveying hopper in wood plastic composite sheet material production, thereby reducing plugging condition in the usage of the hopper; simultaneously the air generated by the air source uniformly enters the hopper body around the hopper body, thereby effectively ensuring blanking speed of wood powder batch mixture in the hopper.

Description

technical field [0001] The invention relates to a production equipment for wood-plastic composite boards, in particular a wood powder conveying hopper for the production of wood-plastic composite boards and a feeding system using the above-mentioned wood powder conveying hopper. Background technique [0002] Wood-plastic composite board is a kind of wood powder (wood cellulose, plant cellulose) as the basic material, thermoplastic polymer material (plastic) and processing aid (industrial slurry), etc., mixed evenly and then heated by mold equipment The high-tech green environmental protection material made by extrusion molding has both the properties and characteristics of wood and plastic, and can replace new composite materials of wood and plastic. [0003] The above-mentioned wood-plastic composite board production equipment generally includes a wood powder mixing unit, a wood powder transmission unit, and a wood powder hot extrusion unit. Raw materials such as wood powde...

Claims

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Application Information

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IPC IPC(8): B29C43/34B29C31/02B29C43/32
Inventor 张惠娣张利李越宋瑞银
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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