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Double-runner and fluctuation-free screen exchanger

A non-fluctuation, screen changer technology, applied in the field of parts of plastic extruders, can solve the problems of poor sealing performance of screen changer, easy failure, loss of work stoppage, etc., to achieve easy operation, less loss of raw materials, and product quality. improved effect

Inactive Publication Date: 2014-10-22
ZHEJIANG LEENY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional screen changer is driven by a hydraulic method, which requires manual screen change, and must be replaced when the equipment is stopped. material loss, and every time there is a downtime loss, and the traditional screen changer has extremely poor sealing performance and is prone to failure

Method used

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  • Double-runner and fluctuation-free screen exchanger
  • Double-runner and fluctuation-free screen exchanger
  • Double-runner and fluctuation-free screen exchanger

Examples

Experimental program
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Effect test

specific Embodiment 1

[0021] Such as figure 1 A double-channel wave-free screen changer shown includes a box body 3, a guide column 2, a wire mesh fixing base 6, an oil cylinder 7 and a fixing plate 1, and rectangular feeding ports 10 and Outlet 5, the upper and lower ends of the box are inwardly formed columnar chambers, and the upper and lower chambers are disconnected structures; the fixed plate 1 is connected with the box body 3 through guide columns 2, and the fixed plate 1 A wire mesh fixing base 6 is provided between the box body and the box body.

[0022] Two guide posts are provided at the feed port end of the box body, and one guide post is provided at the discharge port end of the box body, so as to facilitate taking out the screen mesh during the screen replacement process.

[0023] Two sets of guide sleeves are arranged on the guide column 2, and each set of guide sleeves is two and arranged diagonally.

[0024] The guide sleeve is connected with a wire mesh fixing base 6 through fix...

specific Embodiment 2

[0032] Such as Figure 4 A double-channel wave-free screen changer shown includes a box body 3, a guide column 2, a wire mesh fixing base 6, a screw drive device 14 and a fixing plate 1, and rectangular feeding ports are provided on both sides of the box body. The mouth 10 and the discharge port 5, the upper and lower ends of the box are inwardly formed columnar chambers to form a material chamber 9, and the upper and lower chambers are non-communicative structures.

[0033] Two guide posts are provided at the feed port end of the box body, and one guide post is provided at the discharge port end of the box body, so as to facilitate taking out the screen mesh during the screen replacement process.

[0034] Two sets of guide sleeves are arranged on the guide column 2, and each set of guide sleeves is two and arranged diagonally.

[0035] The guide sleeve is connected with a wire mesh fixing base 6 through fixing bolts. The main body of the wire mesh fixing base 6 is a circular...

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Abstract

The invention provides a double-runner and fluctuation-free screen exchanger which comprises a box body, a guide column, a screen mesh fixing base and a fixing plate, wherein a rectangular feeding hole and a rectangular discharging hole are formed in two sides of the box body, the upper end and the lower end of the box body are inwards-formed columnar cavities, and the upper cavity and the lower cavity are of a non-communicating structure. The feeding hole and the discharging hole of the screen exchanger are both provided with flow control regulating valves, and after a screen is exchanged, the purpose that the whole device works without fluctuation by regulating the switching on or switching off of the valves. The screens of the upper cavity and the lower cavity can be alternatively exchanged, and also can be simultaneously exchanged, so that the screen exchanger is capable of replacing the filter screen under the condition that an extruder is not stopped, a circular truncated cone-shaped structure of the screen mesh fixing base ensures that the wall of a base has certain taper, and has functions of self-fastening, automatically locating and not easily causing melt leakage due to tight jointing of an inclined surface, and the like. The double-runner and fluctuation-free screen exchanger is simple in integral structure and convenient to operate, and facilitates the improvement of the processing efficiency of the extruder and meanwhile the reduction of the production cost.

Description

technical field [0001] The invention relates to a component of a plastic extruder, in particular to a double-channel non-fluctuation screen changer. Background technique [0002] A screen changer is a manual or automatic switching device that includes one or more screens to filter out foreign particles and impurities as the plasticized material flows through the screen. The filter screen is supported by an alloy perforated plate, which is installed on a plate or column carrier, and the carrier can be moved to switch between a system working position and an off-line non-working position. Screen changers can be installed into any new or existing extruder, melt pump, reactor or other extrusion line. [0003] In the polymer granulation process, in order to ensure the smooth and standardized granulation of the material, the polymer in the molten state needs to be strictly filtered before passing through the template holes. According to the different grades of the material, the ...

Claims

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Application Information

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IPC IPC(8): B29C47/68B29C47/08
CPCB29C48/691
Inventor 魏正才
Owner ZHEJIANG LEENY TECH
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