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Polyurethane hard foam brush type disintegrating machine

A technology of hard foam and polyurethane, which is applied in the fields of mechanical material recycling, plastic recycling, recycling technology, etc.

Inactive Publication Date: 2007-07-18
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no special equipment on the market for the crushing of polyurethane rigid foam

Method used

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  • Polyurethane hard foam brush type disintegrating machine
  • Polyurethane hard foam brush type disintegrating machine

Examples

Experimental program
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Effect test

Embodiment

[0020] The pulverizer consists of a feeding device, a brush-type crushing wheel, and necessary racks and casings. Its structural principle is shown in Figure 1. 1 is the brush-type crushing wheel, 2 is the foam block to be crushed, and 3 is the powder after crushing. .

[0021] The brush crushing wheel consists of a hub and radially distributed filamentary crushing bodies. The diameter of the hub is between 1 mm and 20,000 mm, and the axial length is between 1 mm and 20,000 mm. The diameter and length are determined according to different process requirements. Filamentous broken bodies are made of metal wire or non-metallic wire, with a diameter between 0.05 mm and 100 mm and a length between 0.01 mm and 10,000 mm. The filiform broken bodies are radially distributed on the outside of the wheel rim. The quantity is determined according to the crushing process. The brush-type crushing wheel can be an integral structure or an assembled structure. The entire brush-type crushing...

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Abstract

A brush-type pulverizer for pulverizing hard polyurethane is composed of a machine frame, a casing with feeding unit and discharging outlet, a driver, and a pulverizing unit installed in said casing via supporter and bearings. Said pulverizing unit consists of a wheel hub and a brush-type pulverizing wheel linked with said driver.

Description

【Technical field】 [0001] The invention belongs to the technical field of crushing and recycling of waste polyurethane rigid foam. 【Background technique】 [0002] Polyurethane rigid foam is a commonly used thermal insulation material. It is often used for thermal insulation in refrigerators, cold storage, insulation pipes, etc. When these equipment are discarded, the rigid foam needs to be treated accordingly. The reason is that, first, the use of foam (including the use of Freon as a blowing agent or non-HCFC as a blowing agent) also requires crushing, and then use the crushed powder to make other products; second, the early production The blowing agent used in most rigid foams is freon (CFC-11), which is a serious ozone-depleting substance in the atmosphere. During the treatment of waste polyurethane rigid foam, the recovery of freon must be solved, and the recovery of freon must be made of polyurethane rigid foam. Crush as required. Therefore, this technology is a necess...

Claims

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Application Information

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IPC IPC(8): B02C18/06B02C18/18B02C18/22B29B17/04B29K75/00
CPCY02W30/52Y02W30/62
Inventor 胡彪李健
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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