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Extruder for the extrusion of food or feed

A technology of extruder and feed, applied in the field of twin-screw extruder and single-screw extruder, which can solve the problems of complicated operation and so on

Active Publication Date: 2020-10-27
BUEHLER AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] While such an SSDS is very useful in controlling the operation of a single-screw type extruder, as outlined above, the operation of such a device is still too cumbersome in practice

Method used

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  • Extruder for the extrusion of food or feed
  • Extruder for the extrusion of food or feed
  • Extruder for the extrusion of food or feed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0054] figure 1A typical single screw type extruder E known in the prior art is shown. The extruder E is powered by the main motor 1, with which the drive unit 2 and the support cavity 3 are associated. The machining section 8 usually consists of several so-called cartridges, which are supported by the cartridge supports 5 . The raw material is fed to the extruder E by the side feeder 4 and conveyed through the processing section 8 by means of a screw (not shown). Before entering the processing section 8 , the raw material can be pretreated in so-called conditioners and accumulators, and then fed to the side feeder 4 via the feeder 10 . Depending on the product to be extruded, the configuration of the screw may vary over the length of the processing section 8 . The extruder E is operated by the technician through the operation panel 9 . At the end of the processing section 8 is provided a die comprising a die plate 7 . A tool 6 is arranged downstream of the die. Knives 6...

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PUM

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Abstract

Single screw extruder (E) for the extrusion of food or feed, comprising in the direction of flow of a product to be extruded: i) a processing section (8); ii) a bypass outlet (B); iii) a valve plate (V); iv) a die plate (D); and iv) a cutter (6). The flow of product can be directed through the valve plate under normal operating conditions of the extruder (E), and through the bypass outlet (B) during start-up of the extruder (E) or for maintenance purposes downstream of the valve plate (V). The valve plate (V) is arranged on or in a mounting plate (M); the cutter (6) and the mounting plate (M)are provided with interacting guiding means that prevent rotation of the cutter (6) vis-a-vis the mounting plate (M); and the cutter (6) and the mounting plate (M) are mechanically fastened to each other with rotational locking means.

Description

technical field [0001] The present invention relates primarily to extruders of the predominantly single screw type for extruding food or feed, which are equipped with knives downstream of the die plate. The concept of the present invention is also applicable to twin-screw type extruders. Background technique [0002] Such extruders typically take a certain amount of time to reach a steady operating state upon start-up, and it is not desirable to direct the product through the die and into the tool until the state has stabilized. To this end, a Clean Start and Discharge System (SSDS) can be implemented. Such a device has a valve arranged downstream of the processing section of the extruder and upstream of the die plate of the extruder. The valve can be closed completely, for example, when the extruder is started, and the product is then directed from the processing section through the bypass outlet. In this working condition no product is guided past the formwork and knive...

Claims

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Application Information

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IPC IPC(8): B29C48/00B29C48/25B29B9/06
CPCB29B9/06B29C48/0022B29C48/269B29C48/022B29C48/40B29C48/92A23P30/20B29C48/397B29C2793/0027
Inventor A·克里斯切D·庄U·维斯特
Owner BUEHLER AG