Ongoing residue filter mingled with plastic hot-melt extrusion

Abstract

The invention relates to an ongoing residue filter mingled with plastic hot-melt extrusion, which comprises a filtering system, a taper reduction sleeve and a deslagging system, wherein a conic filtering sleeve is sleeved in a connecting sleeve and is provided with high density filtering holes, a screw rod is arranged in the conic filtering sleeve, the appearance of the screw rod is closely matched with that of an inner cavity of the conic filtering sleeve, the screw rod and the inner cavity of the conic filtering sleeve rotate relatively, one end of the taper reduction sleeve is connected with a taper reduction sleeve connection flange, the other end of the taper reduction sleeve is arranged in a deslagging sleeve and is fixed with a bearing support, the other end of the deslagging sleeve and a gearbox flange are fixed with each other, the bearing support is fixed in the deslagging sleeve, a thrust bearing is installed on the screw rod and is connected with the bearing support, openings are symmetrically formed in the peripheral wall of the deslagging sleeve, and an upper opening and a lower opening are respectively opposite to an exhaust vent and a deslagging port of the taper reduction sleeve. The ongoing residue filter adopts a filter body and a screw rod rotational extrusion technology, thus being capable of continuously filtering and discharging slag automatically, not only improving the production efficiency and lowering the manufacture and production cost, but also lowering the consumption, being simple in installation and maintenance, being in accordance with the requirement of environment protection, novelty and creation, and having a terrific market prospect.

Description

technical field [0001] The invention relates to a residue filter of a recycled plastic extruder, and more specifically refers to a filter suitable for recycling and regenerating hot-melt extrusion of mixed plastics in garbage, which can continuously and automatically discharge impurities therein, belonging to plastic The field of mechanical filtration technology. Background technique [0002] As the whole society pays more and more attention to environmental protection, recycling and reusing waste plastic mixed in garbage is not only beneficial to environmental protection, but also saves resources. However, the mixed plastics recovered from garbage often contain a large amount of various impurities (especially many small particles that are difficult to clean up manually). Therefore, in the process of recycling mixed plastics, in order to remove these impurities, It is necessary to set a filter device on the plastic extruder. At present, most of the filters or residue filte...

AI Technical Summary

Problems solved by technology

However, the mixed plastics recovered from garbage often contain a large amount of various impurities (especially many small particles that are difficult to clean up manually). Therefore, in the process of recycling mixed plastics, in order to remove these impurities, It is necessary to set a filter device on the plastic extruder

At present, most of the filters or residue filters of general-purpose plastic extruders designed, manufactured, sold and used at home and abroad have the following disadvantages: (1) the usual plastic extruders are mainly composed of plastic heating devices, filter screens, and filter screens. If the amount of impurities in the mixed plastic is small and the particle size is small, the machine can basically operate normally, but when there are many types and large content of impurities, it is easy to block the filter screen. At this time, frequent replacement or cleaning of the filter screen is required. Not only It reduces the working efficiency of the filter of the extruder, and also increases the workload of the staff, which will increase the cost

For this reason, after continuous improvement, there was a netless filter for plastic extruders. However, the feed in the scheme mostly enters from the middle of the filter body, which makes it easy for the plastic to diffuse to both ends of the filter and accumulate at the outlet. The dead corner of the slag outlet and the filter, because the filtered impurities are removed from one end of the filter, it is easy to cause the plastic to be discharged together with the slag, the slag discharge rate is greatly reduced, or the separated impurities are accumulated in the dead corner at both ends of the filter Phenomena that are not easily ruled out

(2) Usually, the slag discharge of the plastic extruder filter with net or without net is manually and regularly timed, and the slag discharge efficiency is low, time-consuming and labor-intensive

(3) Ordinary screened or non-netted plastic extruder filters cannot discharge slag continuously, artificially control the slag discharge time, and accidents such as outdated leakage often occur, and the slag discharge hole is blocked due to too much slag in the slag storage area and not discharged in time The phenomenon

Images