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Continuous extrusion device based on twin screw extruder

A technology of twin-screw extruder and extrusion device, which is applied in the direction of mixer with rotary stirring device, mixer, transportation and packaging, etc., can solve the problem of not being able to obtain the exhaust device, etc., and achieve the effect of simple replacement

Inactive Publication Date: 2015-12-23
THE JAPAN STEEL WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] That is, the exhaust device used in the above-mentioned Patent Document 1 has the following disadvantages: Although the inert gas components mixed with the plastic raw material or the air involved, and the volatilization remaining in the plastic raw material are exhausted by an external suction source such as a vacuum pump, components, etc., but if the filter is clogged, the function of the exhaust device cannot be obtained unless the machine is stopped and the filter is replaced

Method used

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  • Continuous extrusion device based on twin screw extruder
  • Continuous extrusion device based on twin screw extruder
  • Continuous extrusion device based on twin screw extruder

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Embodiment Construction

[0032] The object of the present invention is to provide a continuous extrusion device based on a twin-screw extruder, which can operate the twin-screw extruder by using the other filter when replacing one of a pair of filters, thereby enabling Perform continuous operation.

[0033] Next, preferred embodiments of the continuous extrusion apparatus of the twin-screw extruder of the present invention will be described with reference to the drawings.

[0034] In addition, the same reference numerals are assigned to the same or equivalent parts as those of the conventional example, and the description will be given.

[0035] exist figure 1 Among them, reference numeral 1 denotes a cylinder, 2 and 2a are screws, 3 is a hopper, 4 is a kneading section, 5 is an exhaust device, 6 is a filter, and 7 is an exhaust valve on the downstream side. , the inert gas 13 is supplied to the hopper 3 and the exhaust valve 7, but it may not be supplied.

[0036] A first pressure detector 15 for...

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Abstract

According to the present invention, a twin screw extruder is continuously operated even during filter replacement by using a pair of filters. This continuous extrusion device based on a twin screw extruder has a pair of filters (6, 6a) provided to a degassing device (5), and a partition valve (24) having a valve (34) for establishing or terminating communication between the filters (6, 6a) and the screw hole (16) of a cylinder (1). When the first filter (6) is being replaced, degassing is performed using the other, second filter (6a). The twin screw extruder is continuously operated even during filter (6, 6a) replacement.

Description

technical field [0001] The present invention relates to a continuous extrusion device based on a twin-screw extruder, and more particularly to a twin-screw extruder capable of continuous operation by using the other filter to operate when replacing one of a pair of filters new improvements. Background technique [0002] In the past, as such an extrusion device based on a twin-screw extruder, there is a device proposed in Patent Document 1. The structure of the device is as follows: Figure 5 shown. also, Figure 5 It is not the same drawing as in Patent Document 1, but an equivalent drawing is used. exist Figure 5 Among them, 1 is the cylinder, 2 is the screw, 3 is the hopper, 4 is the mixing section, 5 is the exhaust device, 6 is the filter, and 7 is the downstream exhaust valve. In order to prevent oxidation of the plastic in the hopper 3 and the exhaust valve 7, an inert gas 13 is sometimes supplied. The above-mentioned exhaust valve 7 may be opened to the atmosphere ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B7/48B29C47/76B29C48/295B29C48/40B29C48/54B29C48/57B29C48/69B29C48/76B29C48/92
CPCB29B7/801B29B7/82B29B7/845B29C2791/006B29C48/145B29C48/295B29C48/54B29C48/57B29B7/483B29B7/488B29C48/763B29C48/92B29C48/402B29C48/767B29C2948/924B29C2948/92019B29C2948/92561B29C48/40B29C48/69B01F27/42B01F35/90B01F35/7547B01F2035/98B01F2101/2805
Inventor 高本诚二石川诚柿崎淳藤田玲生矢田恭平
Owner THE JAPAN STEEL WORKS LTD