CN120962910B

CN120962910B - A multimodal plastic waste recycling, extrusion, and impurity removal device

Info

Publication number: CN120962910B
Application number: CN202511483326.9A
Authority: CN
Inventors: 杨启峰
Original assignee: Nantong Datai Plastic Products Co ltd
Current assignee: Nantong Datai Plastic Products Co ltd
Priority date: 2025-10-17
Filing date: 2025-10-17
Publication date: 2026-03-13
Anticipated expiration: 2045-10-17
Also published as: CN120962910A

Abstract

The invention relates to the field of garbage recycling equipment and discloses multi-mode plastic garbage recycling extrusion impurity removing equipment which comprises a base, a first motor arranged on the base, a material storage unit arranged at the upper end of the base and used for storing plastic garbage, a crushing unit arranged on the material storage unit and used for crushing the plastic garbage, an extrusion unit arranged inside the material storage unit and fixedly connected with a rotating shaft on the first motor and positioned below the crushing unit and used for extruding the crushed plastic garbage into plastic particles, and an impurity removing unit arranged at a discharge hole of the material storage unit and used for filtering impurities in the plastic particles discharged from the discharge hole.

Description

Multimode plastic garbage recycling, extruding and impurity removing equipment

Technical Field

The invention relates to the technical field of garbage recycling equipment, in particular to multi-mode plastic garbage recycling extrusion impurity removing equipment.

Background

With the wide application of plastic products, the generation amount of plastic garbage is increasing. If the plastic garbage is not properly treated, the plastic garbage can not only cause serious pollution to the environment, such as soil pollution, water pollution and the like, but also occupy a large amount of land resources.

The existing recycling equipment has the following defects that 1, the existing recycling equipment only simply pulverizes plastic garbage, and a special extrusion granulating link is omitted, so that the recycled plastic is irregular in shape, the space occupied by the loose plastic particles is large, the subsequent transportation is inconvenient, and the difficulty and cost of subsequent processing are increased. 2. When the existing plastic granulating device extrudes plastics, because certain powder slag exists in particles after extrusion is finished, the powder slag is convenient to screen by traditional extrusion equipment, and more powder slag exists in the formed particles.

Therefore, the application provides multi-mode plastic garbage recycling, extruding and impurity removing equipment to solve the problems.

Disclosure of Invention

The invention aims to provide multi-mode plastic garbage recycling, extruding and impurity removing equipment, which aims to solve the problems that the plastic particles are relatively loose, occupy relatively large space and are inconvenient for subsequent transportation and more powder residues in the formed particles.

In order to achieve the purpose, the invention provides the technical scheme that the multi-mode plastic garbage recycling, extruding and impurity removing equipment comprises a base, a first motor arranged on the base, a stock unit arranged at the upper end of the base and used for storing plastic garbage, and further comprises:

The crushing unit is arranged on the stock unit and is used for crushing the plastic garbage;

the extrusion unit is arranged in the stock unit, is fixedly connected with the first motor on the rotating shaft and is positioned below the crushing unit, and is used for extruding the crushed plastic garbage into plastic particles;

And the impurity removing unit is arranged at the discharge port of the stock unit and is used for filtering impurities in plastic particles discharged from the discharge port.

Wherein, stock unit includes:

The extrusion barrel is fixed on the fixing frame at the upper end of the base and is used for storing plastic garbage needing extrusion molding;

the crushing barrel is arranged at the upper end of the extrusion barrel and is used for storing plastic garbage to be crushed;

the hopper is fixed at the upper end of the crushing barrel in a funnel-shaped design and is used for storing plastic garbage to be crushed;

the guide hopper is fixed in the feed hopper, the lower end of the guide hopper is close to one side of the crushing unit, and the guide hopper is used for gathering plastic garbage to the position of the crushing unit.

Wherein the pulverizing unit includes:

the fixed seat is fixed at the outer side of the crushing barrel at equal angles;

the second motor is fixed on the fixed seat;

the crushing shaft is fixed at the power output end of the second motor, penetrates through the other side of the crushing barrel and is connected with the other fixed seat;

and the crushing cutters are fixed on the two crushing shafts in a staggered manner and are used for crushing the plastic garbage falling into the guide hopper.

Wherein the pressing unit includes:

the heating box is arranged in the extrusion barrel and is used for heating the plastic falling into the extrusion barrel;

The granulating assembly is arranged in the extrusion barrel and connected with the rotating shaft, and is used for extruding the plastic powder into plastic particles;

and the extrusion assembly is arranged on the rotating shaft and positioned at the upper end of the granulating assembly and is used for extruding the crushed plastic particles on the upper part of the granulating assembly.

Wherein the pressing unit further comprises:

The material distribution disc is fixed at the top end of the rotating shaft in an umbrella-shaped structural design and is used for dispersing the crushed plastic powder.

Wherein the pressing unit further comprises:

The sealing disc is fixed on the rotating shaft, positioned in the extrusion barrel and below the granulating assembly and used for blocking extruded plastic particles;

And the material guide plate is arranged in the extrusion barrel and positioned at the upper end of the sealing disc and is used for discharging the extruded plastic particles into the impurity removal unit.

Wherein, the granulation assembly includes:

The first extrusion plate is sleeved on the rotating shaft and fixed on the inner wall of the extrusion barrel;

the switching plate is sleeved on the rotating shaft and is positioned at the lower end of the first extrusion plate;

the second extrusion plate is sleeved on the rotating shaft, fixedly connected with the inner wall of the extrusion barrel and positioned at the lower end of the switching plate;

The first extrusion plate is provided with a first discharge hole for storing plastic powder, the second extrusion plate is provided with a third discharge hole which is corresponding to the first discharge hole and used for discharging formed plastic particles, and the switching plate is provided with a second discharge hole which is staggered with the first discharge hole and used for controlling the opening and the closing of the first discharge hole and the third discharge hole.

Wherein the pressing unit further comprises;

The switching component is arranged on the extrusion barrel and connected with the granulating component, and is used for controlling the granulating state of the granulating component;

the switching assembly includes:

The first driving wheel is fixed on the rotating shaft and used for transmitting the kinetic energy of the rotating shaft;

The transmission shaft is arranged on the mounting frame at the outer side of the extrusion barrel;

the second driving wheel is fixed on the transmission shaft and is connected with the first driving wheel through a belt;

The rotating disc is fixed on the transmission shaft, penetrates through the extrusion barrel and is provided with intermittent teeth at the position connected with the switching plate;

Teeth meshed with the intermittent teeth are arranged at the position where the switching plate is connected with the intermittent teeth.

Wherein the extrusion assembly comprises:

the connecting shaft is fixed on the rotating shaft and is positioned above the granulating assembly;

and the compression roller is sleeved on the connecting shaft and is used for extruding the plastic powder at the upper end of the granulating assembly.

Wherein, the edulcoration unit includes:

The blanking plate is obliquely arranged at one side of the discharging hole and is used for discharging formed plastic particles;

The filter screen is fixed on the blanking plate and is used for filtering powder slag in the plastic particles;

And the collecting frame is arranged below the filter screen and is used for collecting powder slag in the plastic particles.

Compared with the prior art, the invention has the beneficial effects that:

1. According to the invention, a plurality of processing links such as material storage, crushing, extrusion and impurity removal are integrated in one device, all units are closely matched and work cooperatively, plastic garbage enters from the material storage unit, is crushed by the crushing unit and extruded and granulated by the extrusion unit, and finally is discharged after impurity removal by the impurity removal unit, so that the whole processing flow is coherent and smooth, the material transferring and waiting time of intermediate links is reduced, the overall efficiency of plastic garbage recycling is obviously improved, and the energy consumption and the production cost are reduced;

2. According to the invention, intermittent discharging is realized by arranging the granulating assembly, the discharging control mode is beneficial to compacting plastic particles, the generation of powder slag in the particles is reduced, the uniformity of the plastic particles is further improved, and the problem that the plastic particles are loose and not formed due to continuous discharging is avoided.

Drawings

FIG. 1 is a schematic diagram of a main structure according to an embodiment of the present invention;

FIG. 2 is a schematic side view of an embodiment of the present invention;

FIG. 3 is a schematic top view of an embodiment of the present invention;

FIG. 4 is a schematic view of a cross-section of an embodiment of the present invention;

FIG. 5 is a schematic view illustrating the structure of the inside of the stock unit according to an embodiment of the present invention;

FIG. 6 is a schematic view showing the installation position of the pressing unit according to an embodiment of the present invention;

FIG. 7 is a schematic view showing the connection of the extrusion assembly and the granulating assembly according to an embodiment of the present invention;

FIG. 8 is a schematic view showing a structure of a pulverizing unit according to an embodiment of the present invention;

FIG. 9 is a schematic view showing a structure of a pressing unit according to an embodiment of the present invention;

FIG. 10 is a schematic view of an exploded view of a pelleting module according to an embodiment of the present invention;

FIG. 11 is a schematic diagram illustrating a connection structure between a switching assembly and a switching board according to an embodiment of the present invention;

fig. 12 is a schematic view showing a structure of connection between the intermittent tooth and the switching plate according to an embodiment of the present invention.

1, A base, 11, a fixing frame, 2, a first motor, 21, a rotating shaft, 3, a storage unit, 31, an extrusion barrel, 3101, a discharge hole, 32, a crushing barrel, 33, a feed hopper, 34, a guide hopper, 35, a mounting frame, 36, a heating box, 4, a crushing unit, 41, a fixing seat, 42, a second motor, 43, a crushing shaft, 44, a crushing knife, 5, a collecting frame, 6, a impurity removing unit, 61, a blanking plate, 62, a filter screen, 7, an extrusion unit, 71, a granulating assembly, 711, a first extrusion plate, 7111, a first discharge hole, 712, a switching plate, 71201, teeth, 7121, a second discharge hole, 713, a second extrusion plate, 7131, a third discharge hole, 72, an extrusion assembly, 721, a connecting shaft, 722, a press roller, 73, a distributing disc, 74, a switching assembly, 741, a first, 742, a belt, 743, a second driving wheel, a transmission shaft, 745, a driving wheel, a rotating disc, 7451, intermittent teeth, 75, a sealing disc, and 76.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-12, the invention provides a technical scheme of multi-mode plastic garbage recycling, extruding and impurity removing device, which comprises a base 1, a first motor 2 arranged on the base 1, a storage unit 3 arranged at the upper end of the base 1 and used for storing plastic garbage, a crushing unit 4 arranged on the storage unit 3 and used for crushing the plastic garbage, an extruding unit 7 arranged inside the storage unit 3 and fixedly connected with a rotating shaft 21 on the first motor 2 and positioned below the crushing unit 4 and used for extruding the crushed plastic garbage into plastic particles, and an impurity removing unit 6 arranged at a discharge hole 3101 of the storage unit 3 and used for filtering impurities in the plastic particles discharged from the discharge hole 3101.

During operation, plastics are put into the storage unit 3 from the upper end, the crushing unit 4 is started to crush the plastic raw materials, the first motor 2 is started to drive the extrusion unit 7 to move, the extrusion unit 7 extrudes and forms crushed plastic powder, the formed plastic particles are discharged into the impurity removal unit 6 from the discharge port 3101 to remove impurities, powder slag in the plastic particles is filtered, a plurality of processing links such as storage, crushing, extrusion and impurity removal are integrated into one device, the units are tightly matched and cooperatively operated, the plastic garbage enters from the storage unit 3 and sequentially passes through the crushing unit 4 to crush and the extrusion unit 7 to extrude and granulate, finally the plastic garbage is discharged after impurity removal by the impurity removal unit 6, the whole processing flow is coherent and smooth, the material transferring and waiting time of intermediate links are reduced, the overall efficiency of plastic garbage recycling is remarkably improved, and the energy consumption and the production cost are reduced.

In one embodiment, the material storage unit 3 comprises an extrusion barrel 31 fixed on a fixing frame 11 at the upper end of the base 1 and used for storing plastic waste to be extruded and formed, a crushing barrel 32 arranged at the upper end of the extrusion barrel 31 and used for storing the plastic waste to be crushed, a feed hopper 33 fixed at the upper end of the crushing barrel 32 in a funnel-shaped design and used for storing the plastic waste to be crushed, and a guide hopper 34 fixed inside the feed hopper 33 and arranged at the lower end of the guide hopper towards one side close to the crushing unit 4 and used for gathering the plastic waste towards the position of the crushing unit 4.

In such a design, referring to fig. 1-6, the extrusion barrel 31 is responsible for storing plastic garbage to be extruded and formed, stable raw material storage is provided for the subsequent extrusion process, the crushing barrel 32 is used for storing plastic garbage to be crushed, the plastic garbage reaches proper granularity before entering the extrusion link, the feeding hopper 33 and the guide hopper 34 jointly ensure that the plastic garbage smoothly enters the crushing barrel 32 and precisely guides the plastic garbage to the crushing unit 4, the cooperative material storage system ensures that the whole plastic garbage recycling process flow is smoother, the equipment shutdown waiting time caused by unsmooth material storage link is reduced, the whole production efficiency is improved, the feeding hopper 33 adopts a funnel-shaped design and is fixed at the upper end of the crushing barrel 32, the plastic garbage from various sources can be conveniently received, no matter the plastic garbage is manually put into the feeding hopper 33 or conveyed by conveying equipment, the guide hopper 34 can precisely guide the plastic garbage to the central position of the crushing unit 4 in the process of the plastic garbage entering the crushing barrel 32, and the plastic garbage can be intensively fed into the working area of the crushing cutter, and the crushing unit 4 can crush the plastic garbage more uniformly and fully.

In one embodiment, the crushing unit 4 comprises a fixed seat 41 fixed at equal angles to the outer side of the crushing barrel 32, a second motor 42 fixed on the fixed seat 41, a crushing shaft 43 fixed at the power output end of the second motor 42 and penetrating through the other side of the crushing barrel 32 to be connected with the other fixed seat 41, and crushing cutters 44 fixed on the two crushing shafts 43 in a staggered manner for crushing the plastic garbage falling into the guide hopper 34.

In this way, referring to fig. 1-5 and fig. 8, the crushing unit 4 is provided with two groups, which are respectively fixed at two sides of the crushing barrel 32, the fixing seat 41 is fixed at the outer side of the crushing barrel 32 at equal angles, a stable and reliable supporting structure is provided for the whole crushing unit 4, one end of the crushing shaft 43 is fixed at the power output end of the second motor 42, the other side penetrates out of the crushing barrel 32 and is rotationally connected with the other fixing seat 41, the design of the two ends of the crushing shaft support ensures that the crushing shaft 43 has better rigidity and stability when rotating at high speed, and the crushing cutter 44 can continuously crush falling plastic raw materials in the working process, thereby improving the crushing efficiency of plastics.

In one embodiment, the extruding unit 7 includes a heating box 36 provided inside the extruding tub 31 for heating the plastic falling into the inside of the extruding tub 31, a granulating assembly 71 provided inside the extruding tub 31 and connected to the rotating shaft 21 for extruding the plastic powder into plastic particles, and an extruding assembly 72 provided on the rotating shaft 21 at an upper end of the granulating assembly 71 for extruding the plastic particles crushed at an upper portion of the granulating assembly 71.

5-7, The heating box 36 is arranged in the extrusion barrel 31, can heat plastic powder falling into the extrusion barrel, and can gradually soften and melt the plastic under proper conditions by reasonably controlling the heating temperature and the heating time, so that a good plasticizing state is achieved, the uniform plasticizing effect is beneficial to better filling the plastic into the granulating assembly 71 in the subsequent extrusion process, internal pores and defects are reduced, plastic particles with uniform density and higher strength are produced, when the plasticized plastic enters the granulating assembly 71, the extruding assembly 72 can extrude the plastic into the granulating assembly 71, and the granulating assembly 71 can extrude the plastic into a required shape.

In one embodiment, the pressing unit 7 further includes a distributing tray 73 fixed to the top end of the rotating shaft 21 in an umbrella-shaped structure for distributing the pulverized plastic powder.

In this way, referring to fig. 4-6 and fig. 9-10, the distributing disc 73 with umbrella-shaped design can uniformly disperse the crushed plastic powder falling into the extrusion barrel 31, and in the falling process of the plastic powder, the umbrella-shaped structure disperses the powder along the surface of the powder, so that the powder is prevented from being accumulated in a certain area, the plastic powder can be fully exposed in the heat generated by the heating box 36, the contact area with a heat source is greatly increased, the plastic powder can be uniformly heated, the proper plasticizing temperature is quickly reached, and the plastic powder with stable quality is provided for the subsequent extrusion molding process.

In one embodiment, the extrusion unit 7 further includes a sealing plate 75 fixed on the rotation shaft 21 at the inside of the extrusion barrel 31 and below the granulating assembly 71 for blocking the extrusion-molded plastic particles, and a guide plate 76 provided at the inside of the extrusion barrel 31 and at the upper end of the sealing plate 75 for discharging the extrusion-molded plastic particles into the impurity removing unit 6.

In this way, referring to fig. 5-7, the sealing disc 75 is fixed on the rotating shaft 21 and is located below the granulating assembly 71, so that the plastic particles at the upper end of the sealing disc 75 can be effectively blocked above the sealing disc 75, after the plastic particles at the upper end of the sealing disc 75 are in contact with the material guiding plate 76, the material guiding plate 76 can accurately control the flow direction of the extruded plastic particles, so that the extruded plastic particles are uniformly and orderly discharged into the impurity removing unit 6, the follow-up impurity removing process is facilitated, the plastic particles can be ensured to automatically enter the impurity removing unit 6 for impurity removing treatment, the quality of the plastic particles is further improved, and the requirements of different customers on the quality of regenerated plastic are met.

In one embodiment, the granulating assembly 71 comprises a first extrusion plate 711 sleeved on the rotating shaft 21 and fixed on the inner wall of the extrusion barrel 31, a switching plate 712 sleeved on the rotating shaft 21 and positioned at the lower end of the first extrusion plate 711, a second extrusion plate 713 sleeved on the rotating shaft 21 and fixedly connected with the inner wall of the extrusion barrel 31 and positioned at the lower end of the switching plate 712, a first discharging hole 7111 for storing plastic powder is formed on the first extrusion plate 711, a third discharging hole 7131 which is arranged corresponding to the first discharging hole 7111 in position and used for discharging formed plastic particles is formed on the second extrusion plate 713, and a second discharging hole 7121 which is staggered with the first discharging hole 7111 and used for controlling the opening and closing of the first discharging hole 7111 and the third discharging hole 7131 is formed on the switching plate 712.

In such design, referring to fig. 9-12, after plastic in a plasticizing state enters the first extrusion plate 711, the plastic is pressed into the first discharge hole 7111 by the extrusion component 72, and at this time, the bottom end of the first discharge hole 7111 is sealed by the switching plate 712, so that plastic particles can be fully extrusion molded in the first discharge hole 7111, after the plastic particles in the first discharge hole 7111 are filled, the switching plate 712 rotates, so that the first discharge hole 7111 is communicated with the third discharge hole 7131, molded particles are discharged from the third discharge hole 7131, after the plastic particles are discharged, the lower end of the first discharge hole 7111 is sealed again by the switching plate 712, then the plastic enters the first discharge hole 7111 to perform the next extrusion molding operation, after the particles in the first discharge hole 7111 are fully stored again, the first discharge hole 7111 and the channel of the third discharge hole 7131 are opened again, so that the extrusion molding is performed on the plastic particles in a reciprocating manner, intermittent discharge is realized, the intermittent discharge control mode is helpful for reducing solid particles in the plastic particles, and further avoiding the problem of loose particles being continuously molded.

In one embodiment, the extrusion unit 7 further comprises a switching assembly 74 arranged on the extrusion barrel 31 and connected with the granulating assembly 71 for controlling the granulating state of the granulating assembly 71, wherein the switching assembly 74 comprises a first driving wheel 741 fixed on the rotating shaft 21 and used for transmitting the kinetic energy of the rotating shaft 21, a driving shaft 744 arranged on the mounting frame 35 outside the extrusion barrel 31, a second driving wheel 743 fixed on the driving shaft 744 and connected with the first driving wheel 741 through a belt 742, a rotating disc 745 fixed on the driving shaft 744 and provided with intermittent teeth 7451 at the position penetrating the extrusion barrel 31 and connected with the switching plate 712, and teeth 71201 meshed with the intermittent teeth 7451 are formed at the position where the switching plate 712 is connected with the intermittent teeth 7451.

In this way, referring to fig. 4-7 and fig. 9-11, the first driving wheel 741 is fixed on the rotating shaft 21, and can stably receive the kinetic energy of the rotating shaft 21, and transmit the kinetic energy to the second driving wheel 743 through the belt 742, so as to drive the transmission shaft 744 and the rotating disc 745 to rotate, and the intermittent teeth 7451 on the rotating disc 745 are meshed with the teeth 71201 on the switching plate 712, so that each time the rotating disc 745 rotates for a certain angle, the intermittent teeth 7451 interact with the teeth 71201 to drive the switching plate 712 to perform precise intermittent rotation, thereby precisely controlling the opening and closing of the first discharging hole 7111 and the third discharging hole 7131 in the granulating assembly 71, and realizing intermittent discharging of plastic powder and forming of plastic particles.

In one embodiment, the extrusion assembly 72 comprises a connecting shaft 721 fixed on the rotating shaft 21 and positioned above the granulating assembly 71, and a pressing roller 722 sleeved on the connecting shaft 721 for extruding the plastic powder at the upper end of the granulating assembly 71.

In this way, referring to fig. 5-7 and fig. 9, the connecting shaft 721 is fixed on the rotating shaft 21, and can stably rotate along with the rotating shaft 21 to drive the pressing roller 722 sleeved on the connecting shaft to do circular motion, when the pressing roller 722 presses the plastic powder at the upper end of the granulating assembly 71, the continuous rolling action can apply uniform and continuous pressure to the plastic powder, and the uniform pressing action can enable the plastic powder to better fill the first discharging hole 7111 of the granulating assembly 71, so that the density of the formed plastic particles is uniform, the defects of pores, looseness and the like in the particles are reduced, and the quality and strength of the plastic particles are obviously improved.

In one embodiment, the impurity removing unit 6 comprises a blanking plate 61 obliquely arranged at one side of the discharging hole 3101 and used for discharging formed plastic particles, a filter screen 62 fixed on the blanking plate 61 and used for filtering powder residues in the plastic particles, and a collecting frame 5 arranged below the filter screen 62 and used for collecting the powder residues in the plastic particles.

1-5, The obliquely arranged blanking plate 61 provides a natural sliding channel for plastic particles, when formed plastic particles flow out from the discharge hole 3101 and fall on the blanking plate 61, the formed plastic particles slide downwards along the blanking plate 61 under the action of gravity, in the process, the filter screen 62 fixed on the blanking plate 61 can fully exert the filtering effect of the filter screen, so that the mixed powder residues in the plastic particles are effectively filtered, and then the fallen powder residues are collected in the collecting frame 5 from the filter screen 62, and then the powder residues in the collecting frame 5 can be recycled.

In addition, if there is a description of "first", "second", etc. in the embodiments, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative description thereof. Importance or implicitly indicates the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

Claims

1. The utility model provides a multimode plastics rubbish recycling extrusion edulcoration equipment, includes base (1), sets up first motor (2) on base (1) and sets up stock unit (3) that are used for depositing plastics rubbish in base (1) upper end, its characterized in that still includes:

the crushing unit (4) is arranged on the material storage unit (3) and is used for crushing the plastic garbage;

The extrusion unit (7) is arranged in the stock unit (3), is fixedly connected with the first motor (2) on the rotating shaft (21) and is positioned below the crushing unit (4) and is used for extruding the crushed plastic garbage into plastic particles;

The impurity removing unit (6) is arranged at the discharge port (3101) of the stock unit (3) and is used for filtering impurities in plastic particles discharged from the discharge port (3101);

The stock unit (3) comprises:

The extrusion barrel (31) is fixed on a fixing frame (11) at the upper end of the base (1) and is used for storing plastic garbage needing extrusion molding;

The crushing barrel (32) is arranged at the upper end of the extrusion barrel (31) and is used for storing plastic garbage to be crushed;

The feed hopper (33) is fixed at the upper end of the crushing barrel (32) in a funnel-shaped design and is used for storing plastic garbage to be crushed;

The guide hopper (34) is fixed in the feed hopper (33) and the lower end of the guide hopper is gathered towards one side close to the crushing unit (4) and is used for gathering plastic garbage towards the position of the crushing unit (4);

The pressing unit (7) comprises:

A heating box (36) arranged inside the extrusion barrel (31) and used for heating the plastic falling into the extrusion barrel (31);

a granulating assembly (71) arranged inside the extrusion barrel (31) and connected with the rotating shaft (21) for extruding the plastic powder into plastic particles;

the extrusion assembly (72) is arranged on the rotating shaft (21) and positioned at the upper end of the granulating assembly (71) and is used for extruding the plastic particles crushed at the upper part of the granulating assembly (71);

the granulation assembly (71) comprises:

The first extrusion plate (711) is sleeved on the rotating shaft (21) and is fixed on the inner wall of the extrusion barrel (31);

A switching plate (712) which is sleeved on the rotating shaft (21) and is positioned at the lower end of the first extrusion plate (711);

The second extrusion plate (713) is sleeved on the rotating shaft (21), fixedly connected with the inner wall of the extrusion barrel (31) and positioned at the lower end of the switching plate (712);

a first discharging hole (7111) for storing plastic powder is formed in the first extruding plate (711), a third discharging hole (7131) for discharging formed plastic particles is formed in the second extruding plate (713) in a position corresponding to the first discharging hole (7111), and a second discharging hole (7121) which is staggered with the first discharging hole (7111) and used for controlling the opening and closing of the first discharging hole (7111) and the third discharging hole (7131) is formed in the switching plate (712);

the pressing unit (7) further comprises;

a switching assembly (74) arranged on the extrusion barrel (31) and connected with the granulating assembly (71) for controlling the granulating state of the granulating assembly (71);

the switching assembly (74) includes:

a first driving wheel (741) fixed on the rotating shaft (21) and used for transmitting the kinetic energy of the rotating shaft (21);

A transmission shaft (744) arranged on the mounting frame (35) outside the extrusion barrel (31);

A second driving wheel (743) fixed on the driving shaft (744) and connected with the first driving wheel (741) through a belt (742);

a rotating disc (745) which is fixed on the transmission shaft (744) and penetrates through the extrusion barrel (31) and is provided with intermittent teeth (7451) at the position connected with the switching plate (712);

a tooth (71201) meshed with the intermittent tooth (7451) is arranged at the position where the switching plate (712) is connected with the intermittent tooth (7451);

the press assembly (72) includes:

a connecting shaft (721) fixed to the rotating shaft (21) and located above the granulating assembly (71);

and the compression roller (722) is sleeved on the connecting shaft (721) and is used for extruding the plastic powder at the upper end of the granulating assembly (71).

2. The multi-mode plastic waste recycling extrusion impurity removing device according to claim 1, wherein the crushing unit (4) comprises:

a fixing seat (41) which is fixed at equal angles to the outer side of the crushing barrel (32);

the second motor (42) is fixed on the fixed seat (41);

a crushing shaft (43) fixed at the power output end of the second motor (42) and penetrating through the other side of the crushing barrel (32) to be connected with the other fixed seat (41);

and crushing cutters (44) are fixed on the two crushing shafts (43) in a staggered manner and are used for crushing the plastic garbage falling into the guide hopper (34).

3. The multi-modal plastic waste recycling extrusion and impurity removal apparatus as set forth in claim 1, wherein said extrusion unit (7) further comprises:

A sealing disc (75) fixed on the rotating shaft (21) and positioned in the extrusion barrel (31) and below the granulating assembly (71) for blocking the extruded plastic particles;

and the material guide plate (76) is arranged in the extrusion barrel (31) and is positioned at the upper end of the sealing disc (75) and is used for discharging extruded plastic particles into the impurity removal unit (6).

4. The multi-modal plastic waste recycling extrusion and impurity removal apparatus as set forth in claim 1, wherein said extrusion unit (7) further comprises:

And the distributing disc (73) is fixed at the top end of the rotating shaft (21) in an umbrella-shaped structure design and is used for dispersing the crushed plastic powder.

5. The multi-mode plastic waste recycling extrusion impurity removing device according to claim 1, wherein the impurity removing unit (6) comprises:

A blanking plate (61) which is obliquely arranged at one side of the discharging hole (3101) and is used for discharging formed plastic particles;

The filter screen (62) is fixed on the blanking plate (61) and is used for filtering powder slag in the plastic particles;

and the collecting frame (5) is arranged below the filter screen (62) and is used for collecting powder slag in the plastic particles.