CN112571755B

CN112571755B - Environment-friendly filtering type plastic extruding machine

Info

Publication number: CN112571755B
Application number: CN202011351270.9A
Authority: CN
Inventors: 范犁生
Original assignee: Zhangzhou Puruibang Energy Saving Technology Co ltd
Current assignee: Zhangzhou Puruibang Energy Saving Technology Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2023-01-24
Anticipated expiration: 2040-11-27
Also published as: CN112571755A

Abstract

The invention discloses an environment-friendly filtering type plastic extruding machine, which comprises an extruding machine body, wherein a fixed seat is arranged at the top end of the extruding machine body, a feeding pipe is connected with the top of one side of the fixed seat, a circulating mechanism is arranged at the top of one side of the fixed seat, and the circulating mechanism comprises a fan, a conical pipe, an air outlet pipe, a filtering box, a connecting pipe, a sealing plate, a positioning groove, a filtering net, a sealing cover and a sealing gasket.

Description

Environment-friendly filtering type plastic extruding machine

Technical Field

The invention relates to the technical field of plastic extruding machine equipment, in particular to an environment-friendly filtering type plastic extruding machine.

Background

The plastic extruding machine is an important plastic machine, the production and manufacture of most of plastic products can be realized by extrusion molding, and the plastic extruding machine is an important plastic machine, and the production and manufacture of most of plastic products can be realized by extrusion molding;

therefore, the Chinese patent net discloses an environment-friendly plastic extruding machine with the application number of 201822140127.X, the quantity of finished products can be conveniently mastered by workers through a weighing sensor so as to be conveniently taken out in time, and peculiar smell and gas contained in the finished products which are just processed can be pumped out for filtering through an air filter box;

however, in the practical use process of the plastic extruding machine disclosed by the patent, due to the lack of a circulating mechanism, when harmful gas generated in the plastic extruding process is filtered by workers, the treated gas cannot be recycled, so that the waste of heat resources is reduced.

Disclosure of Invention

The invention provides an environment-friendly filtering type plastic extruding machine which can effectively solve the problem that in the actual use process of the plastic extruding machine provided by the patent in the background art, due to the lack of a circulating mechanism, when workers filter harmful gas generated in the plastic extruding process, the treated gas cannot be recycled, so that the waste of heat resources is reduced.

In order to achieve the purpose, the invention provides the following technical scheme: an environment-friendly filtering type plastic extruding machine comprises an extruding machine body, wherein a fixed seat is installed at the top end of the extruding machine body, the top of one side of the fixed seat is connected with a feeding pipe, and a circulating mechanism is installed at the top of one side of the fixed seat;

the circulating mechanism comprises a fan, a conical pipe, an air outlet pipe, a filter box, a connecting pipe, a sealing plate, a positioning groove, a filter screen, a sealing cover and a sealing gasket;

the fan is installed to fixing base one side angular position department, fan both sides symmetric connection has the conical duct, a conical duct end connection has out the tuber pipe, fixing base opposite side corner position department installs the rose box, the connecting pipe is all installed to the rose box both sides, rose box top limit portion articulates there is the closing plate, the constant head tank has been seted up to rose box top equidistance, the inboard sliding connection of constant head tank has the filter screen, inlet pipe top limit portion articulates there is sealed lid, sealed lid bottom is connected with sealed the pad.

Preferably, one connecting pipe tip and conical tube are connected, another connecting pipe tip imbeds inside the fixing base, sealed pad bottom and inlet pipe top contact, the input of fan and external power source's output electric connection, the fixing base inboard is the curved surface.

Preferably, the extruder comprises a segmented screw; the sectional screw comprises a feeding section, a melting section and a homogenizing section; and different-speed linkage rotation is realized between the feeding section and the melting section and between the melting section and the homogenizing section through a linkage mechanism respectively.

Wherein, the center of one end of the feeding section and the homogenizing section respectively extends outwards to form a convex shaft; the melting section is of a tubular structure; the two convex shafts are inserted and butted from two ends of the melting section respectively; the outer diameter of the convex shaft is smaller than the inner diameter of the melting section, and the convex shaft can rotate relative to the melting section; the inner wall of the melting section and the outer walls of the two convex shafts respectively enclose a sealed cavity; electrorheological fluid is filled in the sealed cavity; the melting section is positioned on the inner wall of the sealed cavity and is provided with protruding outer toothed plates at intervals; the feeding section and the homogenizing section are positioned on the outer wall of the sealed cavity and are provided with inner toothed plates at intervals corresponding to the outer toothed plates; a gap is formed between the outer toothed plate and the inner toothed plate, so that the outer toothed plate and the inner toothed plate cannot interfere; the electrorheological fluids in the two sealed cavities are applied with electric fields by an independent circuit respectively; the outer toothed plate and the inner toothed plate are respectively used as positive and negative electrodes to apply an electric field to the electrorheological fluid.

The outer circumference of the stop block is embedded with a first piston ring; the first piston ring seals against the inner wall of the melting section to realize sealed rotation; the stop block, the outer wall of the convex shaft and the inner wall of the melting section enclose to form the sealed cavity; the convex shafts outside the two stop blocks are respectively sleeved with a bearing; the bearing outer ring abuts against the inner wall of the melting section.

Wherein, a seal sleeve is respectively hooped at the boundary of the outer walls of the feeding section and the melting section and the boundary of the outer walls of the melting section and the homogenizing section; a plurality of outer annular grooves are formed in the inner wall of the seal sleeve; inner annular grooves are formed in the outer walls of the feeding section, the melting section and the homogenizing section corresponding to the outer annular grooves, a plurality of second piston rings are embedded in the outer annular grooves and the inner annular grooves respectively, the corresponding outer annular grooves and the corresponding inner annular grooves are embedded by one second piston ring so that the feeding section, the melting section and the homogenizing section can rotate relative to the sealing sleeve, and the axial displacement is limited by the sealing sleeve; the outer circumferential surface of the sealing sleeve is a cambered surface on an axial tangent plane so as to avoid blocking the advance of materials.

Preferably, the bottom of one side of the fixed seat is connected with a filtering mechanism in a sliding manner;

the filtering mechanism comprises an impurity filtering box, a filtering plate, a push rod, a scraping plate, a supporting plate, a positioning plate, a clamping groove and a clamping block;

fixing base one side bottom sliding connection has strains miscellaneous case, strain miscellaneous incasement side embedding and install the filter, strain miscellaneous case one side middle part sliding connection has the push rod, strain miscellaneous incasement side through push rod sliding connection has the scraper blade, strain miscellaneous case one side bottom sliding connection has the backup pad, the locating plate is installed to backup pad one side symmetry, strain miscellaneous incasement portion and correspond the locating plate position and roughly seted up the draw-in groove, the inboard embedding of draw-in groove has the fixture block.

Preferably, one side of the clamping block is fixedly connected with the positioning plate, and the size of the cross section of the supporting plate is larger than that of the cross section of the filtering plate.

Preferably, the inboard top of fixing base rotates and is connected with the stirring rod, the corresponding stirring rod position department in fixing base top installs agitator motor, agitator motor output shaft and stirring rod fixed connection, the inboard sliding connection that corresponds the stirring rod below position department of fixing base has the slide, the inside embedding of fixing base installs the electric plate.

Preferably, the input ends of the stirring motor and the electric heating plate are electrically connected with the output end of an external power supply, and the sliding plate is connected inside the fixed seat in a sliding manner.

Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:

1. be provided with circulation mechanism, can form airtight space with the fixing base inboard, also can carry out the circulation to the inboard air of fixing base and flow, thereby can carry out filtration treatment to the air, the staff of also being convenient for changes the filter screen after the use, and then avoid mixing the toxic gas contaminated air who presss from both sides in the air, the healthy influence that causes of toxic gas to staff has also been avoided, and simultaneously, the hot-air who also avoids in the fixing base flows the external wasting of resources that causes heat energy.

2. Be provided with filtering mechanism, the staff of being convenient for carries out filtration treatment to the plastics after the stirring to avoid in the plastics adnexed impurity to cause the quality of later stage product to reduce, also be convenient for the staff clears up the impurity on filtering plate surface, thereby reduced the degree of difficulty that the staff cleared up the filter, simultaneously, also avoid the staff when removing and strain miscellaneous case, the adnexed impurity in filter bottom drops out.

3. Be provided with stirring rod, agitator motor and electric plate, the staff of being convenient for carries out hybrid processing fast to plastics to improved the work efficiency that the staff mixes plastics, simultaneously, through the slide, can avoid plastics to drop when mixing in extruding machine organism inboard.

4. The linkage mechanism is specially arranged aiming at the extrusion molding characteristics of the plastic extruding machine and the structural characteristics of the sectional type screw, the linkage mechanism utilizes the characteristics of electrorheological fluid, has extremely strong plasticity and variability, can simply and conveniently realize reversible instantaneous control through the strength of an external electric field, thereby adjusting the rotating speed of each section of the screw according to different materials, formulas and processes, and adapting to the melting and homogenizing characteristics of different materials, formulas and processes; and the contradiction that the melting section and the homogenizing section are plasticized and homogenized incompletely when the rotating speed is too high, feeding is supplemented insufficiently when the rotating speed of the feeding section is too low, flow cutoff is generated, and air is easy to enter can be solved.

5. The application utilizes the phase change under the action of the electric field of the electrorheological fluid, thereby realizing the wide change of the anti-shearing capability, realizing the linkage change of the large-amplitude continuity of each segment, being very flexible, greatly improving the application range of the plastic extruding machine using the technology, being very suitable for extrusion molding production enterprises with small scale, and effectively reducing the cost of the equipment.

6. The inside and outside leakproofness of each segmentation relative rotation in-process is ensured through first piston ring, second piston ring and seal cover.

7. The outer toothed plate and the two side surfaces of the inner toothed plate are firstly attached with insulating sheets, and then the insulating sheets are attached with conductive electrode plates, so that the current can be prevented from being conducted to the outside through the screw rod, and danger and waste of electric energy are avoided; utilize simultaneously outer pinion rack and interior pinion rack and the direct and even contact's of electrorheological fluids characteristics, with its electrode as applying the electric field to the electrorheological fluids and utilize the electrorheological fluids to apply shearing force transmission pivoted application of force component, make full use of the structure and the distribution characteristics of outer pinion rack and interior pinion rack.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the construction of the circulation mechanism of the present invention;

FIG. 3 is a schematic view of the construction of the filter mechanism of the present invention;

FIG. 4 is a schematic view of a mounting structure of the latch of the present invention;

FIG. 5 is a schematic view of the installation structure of the filter net of the present invention;

FIG. 6 is a schematic structural view of a segmented screw of the present invention;

FIG. 7 is a partial schematic view of a segmented screw of the present invention after removal of the electrorheological fluid.

The reference numbers in the figures: 1. a body of the plastic extruding machine; 2. a fixed seat; 3. a feed pipe;

4. a circulating mechanism; 401. a fan; 402. a tapered tube; 403. an air outlet pipe; 404. a filter box; 405. a connecting pipe; 406. a sealing plate; 407. positioning a groove; 408. a filter screen; 409. a sealing cover; 410. a gasket;

5. a filtering mechanism; 501. a impurity filtering box; 502. a filter plate; 503. a push rod; 504. a squeegee; 505. a support plate; 506. positioning a plate; 507. a card slot; 508. a clamping block;

6. a stirring rod; 7. a stirring motor; 8. a slide plate; 9. an electric hot plate;

10. a segmented screw; 101. a feeding section; 102. a melting section; 103. a homogenization section; 104. a protruding shaft; 1041. a stopper; 1042. a first piston ring; 1043. a bearing; 105. sealing the cavity; 106. electrorheological fluid; 107. an outer toothed plate; 108. an inner toothed plate; 109. sealing sleeves; 1093. a second piston ring.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b): as shown in fig. 1-5, the invention provides a technical scheme, an environment-friendly filtering plastic extruding machine, which comprises an extruding machine body 1, wherein a fixed seat 2 is installed at the top end of the extruding machine body 1, the inner side of the fixed seat 2 is a curved surface, the top of one side of the fixed seat 2 is connected with a feeding pipe 3, in order to facilitate a worker to circularly flow air in the fixed seat 2, and a circulating mechanism 4 is installed at the top of one side of the fixed seat 2;

the circulating mechanism 4 comprises a fan 401, a conical pipe 402, an air outlet pipe 403, a filter box 404, a connecting pipe 405, a sealing plate 406, a positioning groove 407, a filter screen 408, a sealing cover 409 and a sealing gasket 410;

a fan 401 is arranged at the angular position of one side of the fixed seat 2, the model of the fan 401 is FA-30, the input end of the fan 401 is electrically connected with the output end of an external power supply, conical tubes 402 are symmetrically connected with two sides of the fan 401, one end of each conical tube 402 is connected with an air outlet tube 403, a filter box 404 is arranged at the angular position of the other side of the fixed seat 2, connecting tubes 405 are arranged on two sides of the filter box 404, one end of each connecting tube 405 is connected with the corresponding conical tube 402, one end of the other connecting tube 405 is embedded in the fixed seat 2, a sealing plate 406 is hinged to the edge of the top end of the filter box 404, positioning grooves 407 are equidistantly arranged at the top end of the filter box 404, a filter screen 408 is slidably connected to the inner side of each positioning groove 407, a sealing cover 409 is hinged to the edge of the top end of the feed tube 3, a sealing gasket 410 is connected to the bottom end of the sealing cover 409, and the bottom end of the sealing gasket 410 is in contact with the top end of the feed tube 3, so that a worker can filter the toxic gas mixed in the air;

in order to facilitate the filtering treatment of the mixed plastics by the workers, the bottom of one side of the fixed seat 2 is connected with a filtering mechanism 5 in a sliding way;

the filtering mechanism 5 comprises a impurity filtering box 501, a filtering plate 502, a push rod 503, a scraping plate 504, a supporting plate 505, a positioning plate 506, a clamping groove 507 and a clamping block 508;

the bottom of one side of the fixed seat 2 is slidably connected with an impurity filtering box 501, a filter plate 502 is embedded in the inner side of the impurity filtering box 501, a push rod 503 is slidably connected to the middle of one side of the impurity filtering box 501, a scraper 504 is slidably connected to the inner side of the impurity filtering box 501 through the push rod 503, a support plate 505 is slidably connected to the bottom of one side of the impurity filtering box 501, the cross section of the support plate 505 is larger than that of the filter plate 502, positioning plates 506 are symmetrically arranged on one side of the support plate 505, a clamping groove 507 is formed in the impurity filtering box 501 corresponding to the positioning plate 506, a clamping block 508 is embedded in the inner side of the clamping groove 507, and one side of the clamping block 508 is fixedly connected with the positioning plate 506, so that impurities attached to the bottom end of the filter plate 502 can be prevented from falling out when a worker moves the impurity filtering box 501;

for the convenience of staff mixes plastics, 2 inboard tops of fixing base are rotated and are connected with stirring rod 6, 2 tops of fixing base correspond 6 position departments of stirring rod and install agitator motor 7, agitator motor 7 model is YE280M1-4, 7 output shafts of agitator motor and 6 fixed connection of stirring rod, 2 inboard corresponding 6 below position departments sliding connection of stirring rod of fixing base have slide 8, slide 8 sliding connection is inside fixing

base

2, 2 inside imbeds of fixing base and installs electric plate 9, electric plate 9 is the material that can convert electric energy into heat energy, agitator motor 7 and electric plate 9's input all with external power source's output electric connection, thereby avoid plastics to take place the solidification phenomenon in mixing process.

The working principle and the using process of the invention are as follows: an environment-friendly filtering type plastic extruding machine, in the actual use process, a worker pours plastic into a fixed seat 2 through an inlet pipe 3, the inlet pipe 3 is hinged with a sealing cover 409, the sealing cover 409 can be rotated, so that the sealing cover 409 is contacted with the top end of the inlet pipe 3, the sealing cover 409 can be sealed with the connecting part of the inlet pipe 3 through a sealing gasket 410, then the worker starts an electric heating plate 9 to heat the plastic in the fixed seat 2, the worker starts a stirring motor 7 at the moment, a stirring rod 6 can be enabled to start rotating through the stirring motor 7, the plastic can be mixed through the stirring rod 6, and the extrusion efficiency of the extruding machine is improved;

when plastics are mixed and stirred, a worker starts the fan 401, air in the fixed seat 2 can enter the filter box 404 along the air outlet pipe 403, the conical pipe 402 and the connecting pipe 405 in sequence through the fan 401, toxic gas mixed in the air can be filtered through the filter screen 408 in the filter box 404, the filtered air enters the fixed seat 2 through the connecting pipe 405, and therefore heat loss in the fixed seat 2 caused by air flowing is avoided, and the worker can conveniently detach and replace the used filter screen 408 through the sealing plate 406 and the positioning groove 407;

finally, after plastics have stirred, the staff passes through the slip of slide 8, can make the plastics after the stirring flow in straining miscellaneous case 501, lead to and strain filter 502 in miscellaneous case 501, can mix the impurity of pressing from both sides in the plastics and carry out filtration treatment, at this moment, the staff passes through the slip of push rod 503, can remove the position of scraper blade 504, through scraper blade 504, can scrape off the processing to the impurity on filter 502 surface, thereby avoid piling up of impurity to cause the jam of filter 502, the plastics after the filtration flows in extruder organism 1, through extruder organism 1, can transport plastics, then, the staff passes through the slip of backup pad 505 with straining miscellaneous case 501, can make fixture block 508 imbed draw-in groove 507 inboard, thereby fix the position of locating plate 506, through the fixed connection of locating plate 506 and backup pad 505, can fix the position of backup pad 505, through backup pad 505, the adnexed impurity in filter 502 bottom can drop out when the staff removes straining miscellaneous case 501.

In addition, the screw rod of the plastic extruding machine is improved in a pioneering way, so that the screw rod has flexible adjustability and is convenient to adapt to different extrusion materials; the working part of the screw can be divided into three sections, a feeding section 101, a melting section (compression section) 102, and a homogenizing section (metering section) 103.

1. And the feeding section is mainly used for compacting and conveying the plastic. The working process of the section is that after entering the screw from the hopper, the plastic is conveyed forwards and compacted under the action of the rotating screw through the friction action between the inner wall of the machine barrel and the surface of the screw. The plastic remains substantially solid in the feeding section. The length of the screw in the feeding section varies with the type of plastic, with the longest extruded crystalline polymer, the second shortest rigid amorphous polymer and the shortest soft amorphous polymer.

2. The melting section, also called the compression section, has the functions of further compacting and plasticizing the plastic and pressing the air entrained in the plastic back to the feeding port for discharging. The channel section should be of the compression type and the working process is that after the plastic enters the melting section from the feeding section, the plastic is gradually compacted because the channel becomes gradually shallower and the back pressure generated by the screen, perforated plate and head creates high pressure in the plastic as the plastic is continuously conveyed forward. Meanwhile, the materials are heated from the outside of the machine barrel and are strongly stirred, mixed and sheared by the screw and the machine barrel, the materials begin to melt, the liquid phase is continuously increased along with the advancing process, the solid phase is continuously reduced, and all or most of the plastic is converted into a sticky state to the tail end of a melting area. The length of the melting section is mainly related to the viscous flow temperature and other properties of the plastic, the plastic with a wide melting temperature range can occupy the whole length of the screw, the melting temperature range is narrow, and the compression section is short. The polyethylene is generally 45% -50% of the total length of the screw.

3. The homogenizing section is also called homogenizing section or metering section, and after the plastic enters the homogenizing section, the plastic is further plasticized and extruded from the screw at constant pressure, quantity and temperature. The homogenizing section accounts for about 20% -50% of the total length of the screw. In order to avoid dead zone of material flow before the end of screw head, the screw head is designed into cone or semi-circle, and some screw homogenizing sections are a cylinder with smooth surface to form torpedo head, which can save material flow, eliminate pulsation and raise the plasticizing capacity of screw.

The sectional screws of the existing extruding machine are all of an integrally processed structure, and all the sections share the same rotating shaft, so the rotating speeds of the sections are the same, but the optimal configuration of the sections is usually not the same rotating speed of all the sections but needs different rotating speeds due to different functional effects; in addition, different raw materials have different parameters such as melting process, melting temperature, fluidity and the like, the sectional type screw of the existing extruding machine is difficult to adapt to the requirements of extruding different raw materials simultaneously, the adaptability is not strong, the existing extruding process only can adjust the different materials by means of adjusting the melting temperature and the rotating speed of the screw is rough, the effect of customizing different materials cannot be achieved far away, and the produced extruding machine is general due to the fact that the cost problem is considered in the production process, the screw cannot be customized to produce according to different materials and formulas, and the cost benefit is not achieved.

Thus, referring to fig. 6 and 7, the present invention, in its expanded form, has developed a new segmented screw 10, which is characterized by the coupled segments, but which allows different speeds and is adjustable; the segmented screw 10 comprises a feeding section 101, a melting section 102 and a homogenizing section 103; the feeding section 101 and the melting section 102 and the homogenizing section 103 respectively realize different-speed linkage rotation through a linkage mechanism.

Furthermore, a convex shaft 104 extends outwards from the center of one end of each of the feeding section 101 and the homogenizing section 103; the melting section 102 is a tubular structure; the two convex shafts 104 are inserted and butted from two ends of the melting section 102 respectively; the outer diameter of the protruding shaft 104 is smaller than the inner diameter of the melting section 102, and the protruding shaft can rotate relative to the melting section 102; the inner wall of the melting section 102 and the outer walls of the two convex shafts 104 respectively enclose a sealed cavity 105; the sealed cavity 105 is filled with electrorheological fluid 106; the melting section 102 is provided with protruding external tooth plates 107 on the inner wall of the sealed cavity 105 at intervals; inner toothed plates 108 are arranged on the outer wall of the sealed cavity 105 of the feeding section 101 and the homogenizing section 103 at intervals corresponding to the outer toothed plates 107; the outer toothed plate 107 and the inner toothed plate 108 have a gap therebetween so that they do not interfere; the electrorheological fluids 106 in the two sealed cavities 105 are applied with electric fields by an independent circuit respectively; the outer toothed plate 107 and the inner toothed plate 108 are respectively used as positive and negative poles to apply an electric field to the electrorheological fluid 106, the two side faces of the outer toothed plate 107 and the two side faces of the inner toothed plate 108 are firstly attached with insulating sheets, and then the insulating sheets are attached with conductive electrode sheets, so that the current can be prevented from being conducted to the outside through the screw rods, and danger and waste of electric energy are avoided.

Further, two stoppers 1041 are arranged outside the protruding shaft 104 at intervals, and a first piston ring 1042 is embedded on the outer circumferential surface of each stopper 1041; the first piston ring 1042 seals against the inner wall of the melting section 102 for sealed rotation; the stop 1041, the outer wall of the protruding shaft 104 and the inner wall of the melting section 102 enclose the sealed cavity 105; a bearing 1043 is further sleeved on the convex shaft 104 outside the two stoppers 1041 respectively; the outer race of the bearing 1043 abuts against the inner wall of the melting section 102.

Furthermore, a sealing sleeve 109 is respectively hooped at the boundary of the outer walls of the feeding section 101 and the melting section 102 and at the boundary of the outer walls of the melting section 102 and the homogenizing section 103; a plurality of outer annular grooves are formed in the inner wall of the seal sleeve 109; inner annular grooves are also formed in the outer walls of the feeding section 101, the melting section 102 and the homogenizing section 103 corresponding to the outer annular grooves, a plurality of second piston rings 1093 are respectively embedded in the outer annular grooves and the inner annular grooves, and the corresponding outer annular grooves and the inner annular grooves are embedded by one second piston ring 1093 so that the feeding section 101, the melting section 102 and the homogenizing section 103 can rotate relative to the sealing sleeve 109 and are limited by the sealing sleeve 109 in axial displacement; the outer circumferential surface of the sealing sleeve 109 is a cambered surface on an axial tangent plane so as to avoid blocking the material from advancing.

The working principle of the sectional type screw rod is as follows: the external motor drives the sectional screw 10 to rotate by the other end of the feeding section 101 of the sectional screw 10; at the moment, according to the added extrusion molding raw materials and different formulas, a craftsman learns the optimal speed distribution of each section of screw rod at the moment according to a large amount of previous researches, the computer automatically adjusts the circuit current, the electric field is applied to the electrorheological fluid 106 by taking the outer toothed plate 107 and the inner toothed plate 108 as positive and negative poles respectively, and the structural characteristics of the electrorheological fluid can be effectively utilized by taking the outer toothed plate 107 and the inner toothed plate 108 as linkage members for applying the electric field and conducting shearing force due to the direct and uniform contact of the electrorheological fluid and the electrorheological fluid, and meanwhile, the viscosity of the electrorheological fluid 106 is avoided and controlled, when the intensity of the applied electric field is greatly lower than a certain critical value, the electrorheological fluid is in a liquid state, and at the moment, the rotation of the feeding section 101 cannot drive the melting section 102 and the homogenizing section 103 to rotate; when the electric field intensity is much higher than the critical value, the electric field intensity becomes solid, and at the moment, the two sections linked by the electrorheological fluid 106 become a whole and have the same rotating speed; at the critical value of the electric field intensity, the viscosity of the electrorheological fluid 106 is increased along with the increase of the electric field intensity, at the moment, the electrorheological fluid 106 is not liquid or solid and has stronger shearing resistance, so that the two segments can be linked to rotate without enabling the two segments to have the same speed; therefore, the rotating speed of each segment can be controlled by controlling the external electric field intensity of the electrorheological fluid 106 between the feeding segment 101 and the melting segment 102 and the external electric field intensity of the electrorheological fluid 106 between the melting segment 102 and the homogenizing segment 103, and due to the characteristics of the electrorheological fluid 106, when the feeding segment 101 is a power input segment, the rotating speed of the melting segment 102 is less than or equal to the rotating speed of the feeding segment 101, the rotating speed of the homogenizing segment 103 is less than or equal to the rotating speed of the melting segment 102, which is just in accordance with the change of the cavity volume in the extruder, and the adjustable parameters can be enough to adapt to the requirements of different materials, formulas and injection molding processes.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an environmental protection filtration type plastics extruding machine, includes extruding machine organism (1), fixing base (2) are installed on extruding machine organism (1) top, fixing base (2) one side top is connected with inlet pipe (3), its characterized in that: the top of one side of the fixed seat (2) is also provided with a circulating mechanism (4); the circulating mechanism (4) comprises a fan (401), a conical pipe (402), an air outlet pipe (403), a filter box (404), a connecting pipe (405), a sealing plate (406), a positioning groove (407), a filter screen (408), a sealing cover (409) and a sealing gasket (410); the fan (401) is installed at the angular position of one side of the fixed seat (2), conical pipes (402) are symmetrically connected to two sides of the fan (401), one end of each conical pipe (402) is connected with an air outlet pipe (403), the other side of the fixed seat (2) is provided with a connecting pipe (405), the edge of the top end of the filter box (404) is hinged with a sealing plate (406), positioning grooves (407) are formed in the top end of the filter box (404) at equal intervals, a filter screen (408) is connected to the inner side of each positioning groove (407) in a sliding mode, the edge of the top end of the feeding pipe (3) is hinged with a sealing cover (409), and the bottom end of the sealing cover (409) is connected with a sealing gasket (410); the extruder comprises a segmented screw (10); the segmented screw (10) comprises a feeding section (101), a melting section (102) and a homogenizing section (103); the different-speed linkage rotation is realized between the feeding section (101) and the melting section (102) and between the melting section (102) and the homogenizing section (103) through a linkage mechanism respectively; one end centers of the feeding section (101) and the homogenizing section (103) respectively extend outwards to form a protruding shaft (104); the melting section (102) is of a tubular structure; the two convex shafts (104) are inserted and butted from two ends of the melting section (102) respectively; the outer diameter of the convex shaft (104) is smaller than the inner diameter of the melting section (102), and the convex shaft can rotate relative to the melting section (102); the inner wall of the melting section (102) and the outer walls of the two convex shafts (104) respectively enclose a sealed cavity (105); electrorheological fluid (106) is filled in the sealed cavity (105); the melting section (102) is provided with protruding outer toothed plates (107) on the inner wall of the sealed cavity (105) at intervals; the feeding section (101) and the homogenizing section (103) are positioned on the outer wall of the sealed cavity (105) and are provided with inner toothed plates (108) at intervals corresponding to the outer toothed plates (107); the outer toothed plate (107) and the inner toothed plate (108) are provided with a gap so that the outer toothed plate and the inner toothed plate do not interfere; the electrorheological fluids (106) in the two sealed cavities (105) are respectively applied with an electric field by an independent circuit; the outer toothed plate (107) and the inner toothed plate (108) are respectively used as a positive pole and a negative pole to apply an electric field to the electrorheological fluid (106); two stop blocks (1041) are arranged outside the protruding shaft (104) at intervals, and a first piston ring (1042) is embedded in the outer circumferential surface of each stop block (1041); the first piston ring (1042) seals against an inner wall of the melt section (102) for sealed rotation; the stop block (1041), the outer wall of the convex shaft (104) and the inner wall of the melting section (102) enclose the sealed cavity (105); the convex shafts (104) outside the two stoppers (1041) are respectively sleeved with a bearing (1043); the bearing (1043) outer ring abuts against the inner wall of the melting section (102); a sealing sleeve (109) is respectively sleeved on the boundary of the outer walls of the feeding section (101) and the melting section (102) and the boundary of the outer walls of the melting section (102) and the homogenizing section (103); a plurality of outer annular grooves are formed in the inner wall of the sealing sleeve (109); inner annular grooves are formed in the outer walls of the feeding section (101), the melting section (102) and the homogenizing section (103) corresponding to the outer annular grooves, a plurality of second piston rings (1093) are embedded in the outer annular grooves and the inner annular grooves respectively, and the corresponding outer annular grooves and the corresponding inner annular grooves are embedded by one second piston ring (1093) so that the feeding section (101), the melting section (102) and the homogenizing section (103) can rotate relative to the sealing sleeve (109) and are limited by the sealing sleeve (109) in axial displacement; the outer circumferential surface of the sealing sleeve (109) is an arc surface on an axial tangent plane so as to avoid blocking the advance of the material.

2. The plastic extruder as claimed in claim 1, wherein one end of one of said connecting pipes (405) is connected to the tapered pipe (402), the other end of said connecting pipe (405) is embedded inside the fixing base (2), the bottom end of said sealing gasket (410) is in contact with the top end of the feeding pipe (3), the input end of said blower (401) is electrically connected to the output end of the external power source, and the inside of said fixing base (2) is curved.

3. The plastic extruder of claim 1, wherein the filter mechanism (5) is slidably connected to the bottom of one side of the fixing base (2);

the filtering mechanism (5) comprises a impurity filtering box (501), a filtering plate (502), a push rod (503), a scraping plate (504), a supporting plate (505), a positioning plate (506), a clamping groove (507) and a clamping block (508);

fixing base (2) one side bottom sliding connection has and strains miscellaneous case (501), strain miscellaneous case (501) inboard embedding and install filter (502), strain miscellaneous case (501) one side middle part sliding connection and have push rod (503), strain miscellaneous case (501) inboard through push rod (503) sliding connection have scraper blade (504), strain miscellaneous case (501) one side bottom sliding connection and have backup pad (505), locating plate (506) are installed to backup pad (505) one side symmetry, strain miscellaneous case (501) inside and correspond locating plate (506) position and roughly seted up draw-in groove (507), draw-in groove (507) inboard embedding has fixture block (508).

4. The plastic extruder as claimed in claim 3, wherein the fixture (508) is fixedly connected to the positioning plate (506) on one side, and the cross-sectional dimension of the support plate (505) is larger than that of the filter plate (502).

5. The environment-friendly filtering type plastic extruder as claimed in claim 1, wherein a stirring rod (6) is rotatably connected to the top of the inner side of the fixing base (2), a stirring motor (7) is installed at the top end of the fixing base (2) corresponding to the position of the stirring rod (6), an output shaft of the stirring motor (7) is fixedly connected with the stirring rod (6), a sliding plate (8) is slidably connected to the inner side of the fixing base (2) corresponding to the position below the stirring rod (6), and an electric heating plate (9) is embedded and installed in the fixing base (2).

6. The plastic extruder as claimed in claim 5, wherein the input terminals of the stirring motor (7) and the electric heating plate (9) are electrically connected to the output terminal of the external power source, and the sliding plate (8) is slidably connected to the inside of the fixing base (2).