CN88200670U

CN88200670U - Squeezed granulating equipment for film type wet waste plastic

Info

Publication number: CN88200670U
Application number: CN198888200670U
Authority: CN
Inventors: 卢生华
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-01-28
Filing date: 1988-01-28
Publication date: 1988-11-23

Abstract

The utility model discloses the squeezed granulating equipment for film type wet waste plastic. At least two screw extruders with the same distance and unequal depths connected in series are adopted, wherein, the first screw extruder is a water recession type extruder, and the last screw extruder is a bleeder type extruder. Two extruders are connected by an oblique die head (8) and a sealing switch elbow (10), a roller type feeder (2) is adopted for feeding, and a filter screen and a hot cutting die head are connected by a manual oblique ring (19). The equipment can used for fully draining water and exhausting steam, effectively preventing the thermal degradation and the thermal oxidation of materials and producing colorless and transparent plastic granules.

Description

Squeezed granulating equipment for film type wet waste plastic

The utility model belongs to plastic granulating equipment, specifically, is the equipment that is used for the direct extruding pelletization of washing wet feed of waste plastic film.

In known technology; in order to solve the recovery processing granulation of waste plastic film; various extruding granulators have been designed; but they are mostly because form serious thermal degradation and thermal oxide in whole granulation process; make the plastic granule of being produced be brown, influenced its use value and range of application.Though advanced vented extruder can overcome the disadvantage of thermal degradation and thermal oxide, this device structure complexity is made difficulty of processing, and cost is very high, and general medium-sized and small enterprises do not dare to inquire.In addition; a common drawback of above-mentioned all extruding granulators is; plastics after requiring to wash are before granulation; necessary fully dried material; this has just increased investments such as drying equipment, energy consumption, place to the user; be the mocromembrane type mulch film of 0.007-0.015mm for thickness particularly, present drying technology is less than ideal effect.

The purpose of this utility model is can directly produce the equipment of water white pellet for membranaceous plastics wet feed provides a kind of not drying.

This equipment has adopted electrical apparatus control system of the prior art, transmission system substantially, has not equidistantly waited dark screw extruder, electric heating coil and basic fundamental such as fervent, improved be to utilize at least two equidistantly not wait dark screw extruder to be cascaded, wherein first is the drainage type extruder, the i.e. position corresponding with the roll-type feeding device and separate the corresponding position of pine section with screw rod and establish osculum and discharge casing below the extruder sleeve is so that the moisture discharge that material is extruded when entering this screw extruder; The last platform screw extruder of being connected is the bleeder extruder, promptly corresponding screw rod is separated pine section position one vavuum pump is installed at this extruder sleeve top, make through screw rod fricting shearing and electric heating coil heating, fully the various oligomer that volatilized in the material of fusion are extracted out extraneous.

At last platform screw extruder tail, connect the fervent die head of filter screen with hand inclined plane ring structure, promptly be complementary by an inclined-plane rotating ring and an inclined-plane stationary ring (being fixed on the extruder sleeve), two inclined plane ring external application tensioning rings are fixed together extruder sleeve and fervent die head, this structure is convenient to change fast filter screen, comes compared with various pneumatic, hydraulic pressure of the prior art and electrical means, and it is simple in structure, the corollary equipment that needs is few, also greatly reduces cost.

The screw extruder that two quilts are connected is connected with the sealing adaptor elbow with an inclined-plane die head, be that the inclined-plane die head is installed in the extruder tail, its inclined-plane degree is 30 °～45 °, several holes are arranged above, its role is to: the hot bar that the material behind the extruder extrusion molten is extruded by this die head, at the charge door that can fall to smoothly under the gravity effect on next extruder sleeve, continue extrusion molten; Sealing adaptor elbow one end connects the inclined-plane die head of an extruder tail, and the other end is connected on the charge door of next extruder.Because material the flash distillation area here increases, water vapour flash distillation in the material is come out, so have (because the existence of water vapour of several passages at the top of switching elbow, the elbow pressure inside is a little more than ambient pressure, therefore, air can not enter elbow, and material has also been avoided oxidized possibility); For ease of observing the discharging situation of switching elbow inside, and can keep in repair or clear up die head at any time, have the cleaning window of a with closure at the front end face of switching elbow, sealing covers and is provided with observation window.

The feeding device of this equipment is the roll-type feeding device, be installed in the sleeve top of first screw extruder prow, this feeding device has loading hopper and two sulfurations that install in the upper and lower order that the roller of rubber is arranged, and this roller can be made backward rotation under the driving of drive disk assembly.The below of roller is a sealed feeding funnel, is connected with charging aperture on the extruder sleeve.After the plastics wet feed adds from loading hopper, being made counter-rotational two rollers is involved in and pushes (extruding force of two rollers can be regulated according to circumstances), most of moisture in the wet feed and air are extruded (moisture of being extruded is drained) from the osculum of loading hopper bottom, sent into the charge door of extruder then through feeding funnel.For the material that guarantee to add extruder is not piled up, and advanced by the screw rod rotation rapidly, the charge door on this sleeve should be opened departing from the sleeve vertical center line and locate for 15 °-30 °, and offset direction is consistent with the screw rod direction of rotation.

Describe an embodiment of the present utility model in detail below in conjunction with accompanying drawing, present embodiment is to be composed in series by two screw extruders, and accompanying drawing 1 is first screw extruder (being the drainage type extruder) generalized section.

Accompanying drawing 2 is second screw extruder (being the bleeder extruder) generalized sections.

Accompanying drawing 3 is roll-type feeding device schematic diagrames.

Accompanying drawing 4 connects the fervent die head schematic diagram of filter screen for the inclined plane ring structure.

Accompanying drawing 5 is inclined plane ring rotation direction schematic diagrames.

In the accompanying drawings, remove electrical apparatus control system (15), transmission system (1) and extruder equidistantly do not wait dark screw rod (4,11), screw sleeve (6,16) and the outer several groups of electric heating coils (3 of sleeve, 5) with prior art basic identical outside, the improvement part of present embodiment is: the extruder (drainage type extruder and bleeder extruder) that two quilts are connected is connected by switching elbow (10), concrete connected mode is, at first extruder tail, one inclined-plane gradient be installed be 40 ° and have the inclined-plane die head (8) of several apertures, one end of switching elbow (10) is connected with die head (8) outer fringe seal, and the other end and second extruder charge door (12) are tightly connected.The top of switching elbow (10) is provided with passage (7), the water vapour in the elbow can be discharged extraneous.The front end of switching elbow (10) is provided with cleaning window (9), is stamped the seal cover of band observation window on the cleaning window (9), can observe the working condition in the elbow (10) at any time.

At first extruder prow, roll-type feeding device (2) is installed, this feeding device (seeing accompanying drawing 3) has the roller (22) of rubber and feed cylinder (23) to form by loading hopper (21), two surface sulfurations, two rubber rollers (22) are positioned between loading hopper (21) and the feed cylinder (23), during work, two rollers (22) are made backward rotation, and the material in the feeding funnel (21) is involved in the middle of two rollers after the extruding, send into feed cylinder (23).Because adding the material of loading hopper (21) is wet feed, after roller (22) extruding, has big water gaging and be extruded, so below loading hopper, be provided with osculum (26); For avoiding air to be involved in oxidation material in the extruder, feed cylinder (23) is airtight tube, and the lower end is connected with charging aperture (25) on the extruder sleeve; For the material of avoiding entering charging aperture (25) is not piled up, improve extrusion efficiency, this charging aperture (25) should be opened departing from the sleeve vertical center line and locate for 20 °, and its offset direction is consistent with the screw rod direction of rotation; For observing the interior feeding situation of feed cylinder (23), and when breaking down, in time clear up, on the feeding barrel, be provided with cleaning window (24), still be added with the seal cover of band observation window on the cleaning window.

Separate pine section (14) corresponding position with feeding device (2) and screw rod respectively in the bottom of first extruder sleeve (6) and be provided with osculum (31) and discharge casing (13), like this, material is squeezed in the progradation of screw rod (4) and part moisture that the heating of electric heating coil (3) is separated is again discharged extruder.

On second extruder sleeve (16), vavuum pump (18) is installed, its effect is: when material is separated the pine section and lost external pressure suddenly through the screw rod that further fully enters after the fusion of the screw rod (11) of second extruder and electric heating coil (5), make that contained various oligomer evaporate in the material, at this moment, utilize this vavuum pump (18), not only above-mentioned oligomer can be extracted out, and, because the suction of vavuum pump can make in the sleeve (16) and form negative pressure again, promote that the oligomer in the material continues volatilization, thereby, improved the quality of extruded stock.

The fervent die head of filter screen (20) that is installed in second extruder tail is to connect with two inclined plane ring structures (19), this structure is mainly by being fixed on an inclined plane ring (29) and the movable inclined plane ring (28) on the sleeve (16) and being buckled in outside two inclined plane rings, the last tensioning ring (27) that the fervent die head of filter screen (20) and sleeve (16) can be linked into an integrated entity, tensioning ring (30) is formed down, and tensioning ring is fastening with screw (32) up and down.When needing to change filter screen, earnestly die head is supported by supporter, pulling inclined plane ring (28) with hook-headed wrench then rotates to arrow (shown in the accompanying drawing 5) rightabout, make, following tensioning ring unclamps, remove trip bolt (32) and take off two tensioning rings, at this moment, whole hot-cutting machine can be along ad hoc slide carriage (17) segment distance that moves right, be replaceable filter screen (33), when resetting, the smooth plate of hot-cutting machine (17) is moved to the left, buckles tensioning ring (27) and following tensioning ring (30), trip bolt (32), use hook-headed wrench to pull inclined plane ring (28) again along arrow direction (shown in the accompanying drawing 5), like this, under the effect on inclined plane ring inclined-plane, tensioning ring is moved to the left up and down, till can not pulling again.

The utility model has the advantage of that the extruder of being connected can realize down draining, draining, the flash distillation steam discharge, the purposes such as vacuum steam discharge, and because after material enters machine, whole process is in air-tight state, thereby effectively prevent thermal degradation, the thermal oxide of membranaceous waste or used plastics wet feed, and discharge its contained oligomer, produce water white high-quality plastic granule. In addition, the utility model also have simple in structure, easy to manufacture, cost is low, power consumption less with operation, the advantage such as easy to maintenance.

Claims

1, a kind of membranaceous waste or used plastics wet feed extruding and granulating equipment comprises electrical apparatus control system, transmission system, does not equidistantly wait dark screw extruder and hot-cutting machine, of the present utility model being characterised in that:

(1) adopt at least two be cascaded equidistantly do not wait dark screw extruder, wherein first is the drainage type extruder, last platform is the bleeder extruder;

(2) adopt inclined-plane die head (8) to be connected between the two extruders with sealing adaptor elbow (10);

(3) at first extruder prow sleeve top, roll-type feeding device (2) is installed;

(4) filter screen that is installed in last platform extruder tail and fervent die head be adopt two mutually the manual inclined plane ring structures (19) of coupling be connected.

2,, it is characterized in that the cover tube bottom of the above-mentioned corresponding roll-type feeding device of first screw extruder (2) and the cover tube bottom that correspondence does not equidistantly wait dark screw rod to separate pine section (14) are respectively equipped with osculum (31) and discharge casing (13) according to the described extruding and granulating equipment of claim 1.

3,, it is characterized in that the top of above-mentioned sealing adaptor elbow (10) is provided with passage (7) according to the described extruding and granulating equipment of claim 1.

4, according to claim 1,3 described extruding and granulating equipments, the front end face of the elbow (10) that it is characterized in that transferring has the cleaning window (9) of a with closure.

5,, it is characterized in that the sleeve charging aperture (25) that is connected with roll-type feeding device (2) is opened departing from sleeve (6) vertical center line to locate for 15 °-30 ° that offset direction is consistent with the screw rod direction of rotation according to the described extruding and granulating equipment of claim 1.