A plastic film extruder filter device with automatic slag discharge

An automatic slag discharge and plastic film technology, applied in the field of plastic film extruders, can solve the problems of defective films, reduced production efficiency, shortened service life of filters, etc., to achieve stable product quality, save production time, and prolong service life. Effect
CN103144276BInactive Publication Date: 2015-09-09浙江瑞宏塑胶有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
浙江瑞宏塑胶有限公司
Publication Date
2015-09-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the technical field of plastic film extruders, and relates to a filter device of an automatic-deslagging plastic film extruder. The filter device comprises a shell, a filter disc, a rotating device, filter sheets, a filter sheet replacement window, a window cover, a feed port and a discharge port, wherein a feed channel positioned between the feed port and one filter sheet is provided with a deslagging channel; the discharge port of the deslagging channel is dead against the filter sheet which is not dead against the feed port; the deslagging channel or the feed channel is provided with a pressure sensor and a one-way valve; one side of the feed port is provided with a deslagging pipe communicated with the opposite surface of the filter sheet which is dead against the outlet of the deslagging channel; and a controller receives a pressure signal transmitted by the pressure sensor and controls the opening and closing of the one-way valve to achieve automatic deslagging. The filter device disclosed by the invention has the advantages of stability in product quality, long service life of the filter sheets, no raw material waste, non-stop automatic deslagging, time saving, high efficiency, low cost and suitability for plastic extrusion equipment of various types.
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Description

technical field

[0001] The invention belongs to the technical field of plastic film extruders, in particular to an automatic slag-discharging filter device for plastic film extruders. Background technique

[0002] At present, the filter device of a plastic film extruder includes a housing, a filter disc in the housing, and a rotating device for the filter disc. The filter disc is evenly distributed with detachable filter sheets in the circumferential direction, and one side of the housing is provided with a feed port, The other side is provided with a discharge port, and the housing on the side of the feed port is provided with a filter replacement window and a window cover with a locking device. After the filter is damaged due to excessive pressure or material, open the filter The disadvantage of replacing the filter by replacing the window is that if the front side of the filter is blocked by impurities, the pressure of the film forming liquid in front of the filter will i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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