CN112372891A

CN112372891A - Renewable resources retrieves and utilizes device

Info

Publication number: CN112372891A
Application number: CN202011141718.4A
Authority: CN
Inventors: 刘鹏飞
Original assignee: Anhui Zeyuan New Material Technology Co ltd
Current assignee: Anhui Zeyuan New Material Technology Co ltd
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-02-19

Abstract

The invention discloses a renewable resource recycling and utilizing device, which comprises a base, wherein the base is sequentially provided with a sorting device, a crushing device and a granulating device, the sorting device separates glass, metal and plastic in a recycled material by using buoyancy of liquid and enables the liquid and the plastic to jointly enter the crushing device so as to enhance the viscosity of the plastic in the crushing process, and the granulating device dries and melts the plastic crushed by the crushing device and extrudes the granules. According to the invention, through the sorting equipment, high-density and low-density substances are automatically screened by utilizing buoyancy in the buoyancy channel, so that a density interval where plastics are located is screened, the non-magnetic hard objects are stripped, the plastic products are automatically conveyed to the crushing equipment by the buoyancy channel, and the liquid and the plastic products enter the crushing equipment together to enhance the viscosity of the plastics in the crushing process, so that the plastic products are crushed more thoroughly.

Description

Renewable resources retrieves and utilizes device

Technical Field

The invention relates to the technical field of resource recovery, in particular to a device for recovering and utilizing renewable resources.

Background

In the aspect of plastic recycling market, due to environmental protection requirements and cost control, the household appliance industry has huge demand on recycling environmental protection plastics, and the domestic market is in short supply and demand, so that a large amount of environmental protection plastic return materials meeting the RHOS standard need to be imported from abroad. For example, in a High Impact Polystyrene (HIPS) material used for a television set cabinet, the environment-friendly recycled material can account for fifty percent, and the amount of the environment-friendly HIPS recycled material particles needed by a manufacturer for one year can reach over 5 ten thousand tons. With the continuous promotion and enhancement of the environmental protection requirement, the requirement for the environment-friendly HIPS feed back is also increased year by year.

The recycling and utilization of renewable resources are mainly realized by sorting and recyclingdifferent materials, for example, plastic products need to be crushed and granulated after being selected, and glass bottles and the like can be used for a second time after being cleaned and sterilized. When plastic products are recovered, other sundries need to be stripped, the metal in the recovered materials is generally stripped by the prior art through magnetic action, the other hard materials, such as sundries such as stones and glass, are difficult to treat through stripping, and the plastic can be filtered through a filtering mode.

Disclosure of Invention

The invention aims to provide a renewable resource recycling device to solve the technical problem that nonmagnetic impurities are difficult to separate when plastic products are recycled in the prior art.

In order to solve the technical problems, the invention specifically provides the following technical scheme:

a renewable resource recycling and utilizing device comprises a base, wherein sorting equipment, crushing equipment and granulating equipment are sequentially arranged on the base;

the sorting equipment comprises a buoyancy channel for separating high-density substances and low-density substances in recovered substances through liquid buoyancy, a supply mechanism for circularly supplying liquid to the buoyancy channel, and a feeding mechanism for conveying a mixture of the separated low-density substances and the liquid to the crushing equipment, wherein the granulating equipment is used for granulating and recycling the crushed mixture.

As a preferable scheme of the present invention, the supply mechanism includes a liquid inlet channel communicated with one end of the buoyancy channel, and a centrifugal pump fixedly installed in the liquid inlet channel, the liquid inlet channel is filled with a buoyancy liquid, and the buoyancy liquid is pumped into the buoyancy channel by the centrifugal pump and flows to the other end of the buoyancy channel;

the feeding mechanism comprises an inclined guide-out groove fixedly connected to the other end of the buoyancy channel, and a drainage channel used for discharging part of the buoyancy liquid is formed in the inclined guide-out groove;

the top end of the buoyancy channel is provided with a feeding port, a magnetic separation groove used for adsorbing metal is installed in the buoyancy channel, and a sinking groove used for collecting high-density sundries is formed in the bottom of the buoyancy channel.

As a preferable scheme of the invention, an outer discharge door which is automatically opened after the glass reaches a certain weight is movably installed at the bottom of the sinking groove, a liquid injection collection cavity for preventing the buoyancy liquid in the buoyancy channel from flowing downwards is arranged below the outer discharge door, and a communicating pore channel is formed on the outer discharge door.

As a preferable scheme of the present invention, one side of the outer discharge door is hinged to one side of the sinking groove, the other side of the outer discharge door is fixed to the other side of the sinking groove through a load-bearing electromagnet block, a sealing rubber ring for sealing and attaching to the bottom end of the sinking groove is fixedly installed on the outer discharge door, and the bottom end of the outer discharge door is connected to one side of the liquid injection collection cavity, which is far away from the load-bearing electromagnet block, through a return spring.

As a preferable scheme of the invention, the crushing equipment comprises a treatment kettle which is rotatably arranged on the base through a hollow shaft, and a feeding door which is used for bearing plastics on the inclined guide-out groove is movably arranged at the top end of the treatment kettle;

a plurality of separating and crushing grooves are uniformly formed in the inner wall of the treatment kettle, an independent rotating rod with the rotating speed different from or the rotating direction opposite to that of the hollow shaft is rotatably mounted in the hollow shaft, a bottom supporting circular plate is fixedly mounted at the top end of the independent rotating rod, and the edge of the bottom supporting circular plate can be relatively rotatably mounted at the bottom end of the treatment kettle through a sealing engagement groove;

the center fixed mounting who holds in the palm end plectane top has the swivel cutter frame, a plurality of annular sword holds in the palm is installed to the outside top-down equidistant of swivel cutter frame have a plurality of cutting blades through centrifugal force self-adaptation subassembly movable mounting on the annular sword holds in the palm offer on the inner wall of processing kettle and be used for the nestification the centre gripping annular of cutting blade.

As a preferable scheme of the invention, the centrifugal force self-adaptive assembly comprises a knife retracting groove formed in the annular knife holder, the cutting blade is nested in the knife retracting groove, one end of the cutting blade is hinged to one end of the knife retracting groove, the other end of the cutting blade is connected to the other end of the knife retracting groove through an elastic piece, a containing magnet block is fixedly mounted on the cutting blade, and an adjusting electromagnet block used for attracting the containing magnet block to enable the cutting blade to be contained in the knife retracting groove is mounted in the knife retracting groove.

As a preferable scheme of the present invention, the granulation apparatus includes a heating wire disposed in an inner wall of the treatment kettle, and a drying air nozzle hole disposed in the annular cutter holder, a hot air chamber is disposed in the rotary cutter holder, the drying air nozzle hole is communicated with the hot air chamber through an air duct, an included angle between the drying air nozzle hole and a horizontal line is an acute angle, the inner wall of the treatment kettle is tapered, an air exhaust hole is disposed on the feed door, and an extrusion cutting assembly is disposed on the treatment kettle at a position corresponding to the annular cutter holder.

As a preferable scheme of the present invention, the extrusion cutting assembly includes gradient valves which are arranged on the separation crushing tank at equal intervals from top to bottom and used for releasing molten plastics with different densities, a plurality of movable ring bodies which correspond to the gradient valves one to one are arranged on the processing kettle, a plurality of extrusion hole arrays which are used for extruding the molten plastics outwards through the gradient valves under the action of centrifugal force are arranged on the movable ring bodies, and a ring cutter which is used for granulating the extruded molten plastics is rotatably arranged outside the movable ring bodies.

As a preferable scheme of the present invention, the circular cutting device includes a plurality of "convex" grooves formed in an outer wall of the processing kettle, the movable ring body is rotatably nested inside the "convex" grooves by being driven by a first motor, an annular frame body is rotatably nested outside the "convex" grooves by being driven by a second motor, a plurality of vertical blades are installed at equal intervals along a length direction of the annular frame body, a separation gap is provided between adjacent vertical blades, a cross-sectional area of the separation gap is larger than an area of the extrusion hole array, and apertures of single holes of adjacent extrusion hole arrays are different.

As a preferable aspect of the present invention, the gradient valve is a trapezoidal block, the processing kettle is provided with a plurality of sliding grooves, the top end of the gradient valve is linearly slidably mounted at the bottom end of the sliding grooves, an engagement block is fixedly mounted inside the sliding grooves, and one end of the sliding grooves causes the gradient valve to abut against the engagement block through a compression spring.

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

according to the invention, through the sorting equipment, high-density and low-density substances are automatically screened by utilizing buoyancy in the buoyancy channel, so that a density interval where plastics are located is screened, the non-magnetic hard objects are stripped, the plastic products are automatically conveyed to the crushing equipment by the buoyancy channel, and the liquid and the plastic products enter the crushing equipment together to enhance the viscosity of the plastics in the crushing process, so that the plastic products are crushed more thoroughly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

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

FIG. 2 is a top view of a crushing apparatus and a pelletizing apparatus in an embodiment of the invention;

FIG. 3 is a schematic structural diagram of an annular frame according to an embodiment of the present invention;

fig. 4 is a schematic view of the installation of the gradient valve and bite block in an embodiment of the invention.

The reference numerals in the drawings denote the following, respectively:

1-a base; 2-sorting equipment; 3-a crushing device; 4-granulation equipment;

21-a buoyancy channel; 22-a buoyant liquid; 23-a liquid inlet channel; 24-a centrifugal pump; 25-a feeding port; 26-a magnetic separation tank; 27-sinking the groove; 28-outer discharge gate; 29-a liquid injection collection chamber; 210-inclined lead-out slots; 211-a drainage channel; 212-a load-bearing electromagnet block; 213-a return spring; 214-a communicating aperture;

31-a treatment kettle; 32-a separation crushing tank; 33-independent rotating rods; 34-a bottom supporting circular plate; 35-sealing the occlusion groove; 36-a rotating tool holder; 37-annular cutter holder; 38-cutting blade; 39-a clamping ring groove; 310-retracting the cutter groove; 311-a hollow shaft; 312-an elastic member; 313-housing a magnet block; 314-adjusting electromagnet blocks; 315-a feed gate;

41-heating wires; 42-spraying holes by using dry air; 43-hot air cavity; 44-air duct; 45-gradient valves; 46-a movable ring body; 47-array of extrusion orifices; 48- "convex" shaped groove; 49-ring frame body; 410-vertical blades; 411-separation gap; 412-bite block; 413-compression spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the present invention provides a renewable resource recycling and utilizing device, which comprises a base 1, wherein a sorting device 2, a crushing device 3 and a granulation device 4 are sequentially arranged on the base 1, the sorting device 2 comprises a buoyancy channel 21 for separating high-density substances and low-density substances in recycled materials through liquid buoyancy, a supply mechanism for circularly supplying liquid to the buoyancy channel 21, and a feeding mechanism for conveying a mixture of the separated low-density substances and liquid to the crushing device 3, and the granulation device 4 is used for granulating and recycling the crushed mixture. The supply mechanism comprises a liquid inlet channel 23 communicated with one end of the buoyancy channel 21 and a centrifugal pump 24 fixedly installed on the liquid inlet channel 23, buoyancy liquid 22 is filled in the liquid inlet channel 23, and the buoyancy liquid 22 is pumped into the buoyancy channel 21 by the centrifugal pump 24 and flows to the other end of the buoyancy channel 21; the feeding mechanism comprises an inclined leading-out groove 210 fixedly connected to the other end of the buoyancy channel 21, and a drainage channel 211 for discharging part of the buoyancy liquid 22 is formed in the inclined leading-out groove 210; the top end of the buoyancy channel 21 is provided with a feeding port 25, a magnetic separation groove 26 for adsorbing metal is installed in the buoyancy channel 21, and a sinking groove 27 for collecting high-density impurities is formed in the bottom of the buoyancy channel 21.

According to the invention, through the sorting equipment 2, high-density and low-density substances are automatically screened by utilizing buoyancy in the buoyancy channel 21, so that the density interval of the plastic is screened, the non-magnetic hard objects are stripped, the plastic products are automatically conveyed to the crushing equipment by the buoyancy channel 21, and the liquid and the plastic products enter the crushing equipment 3 together to enhance the viscosity of the plastic during the crushing process, so that the plastic products are crushed more thoroughly.

The present embodiment is generally suitable for recycling the articles in the "recyclable waste bin", and the articles mainly comprise glass bottles, plastic bottles, aluminum cans, iron cans, etc. Among these items, it is obvious that plastic bottles are the lightest density material and therefore use buoyancy to separate. If the recovered objects have objects with density lower than that of the plastic bottles, the density of the upper layer solution is lower than that of the lower layer solution by injecting the low-density solution and the high-density solution into the buoyancy channel 21 in an up-and-down layered mode, so that the plastic bottles float in the middle layer of the buoyancy channel 21, and the objects with lighter density can be salvaged in the highest layer by adopting a fishing net or other structures.

An outer discharge door 28 which is used for automatically opening after the glass reaches a certain weight is movably mounted at the bottom of the sinking groove 27, a liquid injection collection cavity 29 which is used for preventing the buoyancy liquid 22 in the buoyancy channel 21 from flowing downwards is arranged below the outer discharge door 28, and a communicating pore passage 214 is formed in the outer discharge door 28. One side of the outer discharge door 28 is hinged to one side of the sinking groove 27, the other side of the outer discharge door 28 is fixed to the other side of the sinking groove 27 through a bearing electromagnet block 212, a sealing rubber ring for sealing and attaching to the bottom end of the sinking groove 27 is fixedly installed on the outer discharge door 28, and the bottom end of the outer discharge door 28 is connected to one side, far away from the bearing electromagnet block 212, of the liquid injection collection cavity 29 through a return spring 213.

The water pressure on the upper surface and the lower surface of the outer discharging door 28 is the same by filling liquid in the liquid injection collecting cavity 29, so that the gravity required for opening the outer discharging door 28 is reduced, when the outer discharging door 28 bears the recovered object with certain weight, the outer discharging door 28 automatically turns downwards, the recovered object of glass drops, and the communicating pore passage 214 is formed in the outer discharging door 28, so that the area of water required to be stirred when the outer discharging doors 28 are opened is reduced, and the opening resistance is correspondingly reduced.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the crushing device 3 includes a processing kettle 31 rotatably mounted on the base 1 through a hollow shaft 311, and a feeding door 315 for receiving the plastic on the inclined guiding-out chute 210 is movably mounted at the top end of the processing kettle 31; a plurality of separating and crushing grooves 32 are uniformly formed in the inner wall of the treatment kettle 31, an independent rotating rod 33 with a rotating speed different from or in a direction opposite to that of the hollow shaft 311 is rotatably mounted in the hollow shaft 311, a bottom supporting circular plate 34 is fixedly mounted at the top end of the independent rotating rod 33, and the edge of the bottom supporting circular plate 34 is relatively rotatably mounted at the bottom end of the treatment kettle 31 through a sealing engagement groove 35; the center fixed mounting who holds in the palm end plectane 34 top has rotatory knife rest 36, a plurality of annular sword holds in the palm 37 is installed to the outside top-down equidistant ground of rotatory knife rest 36 a plurality of cutting edge 38 of self-adaptation subassembly movable mounting have through the centrifugal force on the annular sword holds in the palm 37 offer on the inner wall of processing cauldron 31 and be used for the nestification the centre gripping annular 39 of cutting edge 38.

The centrifugal force self-adaptive assembly comprises a knife retracting groove 310 formed in the annular knife holder 37, the cutting blade 38 is nested in the knife retracting groove 310, one end of the cutting blade 38 is hinged to one end of the knife retracting groove 310, the other end of the cutting blade 38 is connected to the other end of the knife retracting groove 310 through an elastic piece 312, a receiving magnet block 313 is fixedly mounted on the cutting blade 38, and an adjusting electromagnet block 314 used for attracting the receiving magnet block 313 to enable the cutting blade 38 to be received in the knife retracting groove 310 is mounted in the knife retracting groove 310.

Because plastic products are lighter and have no viscosity, when the plastic sheets are crushed, the crushing blades can drive the plastic sheets to move, so that the interaction between the plastic sheets and the crushing blades is greatly reduced, and the cutting effect of the plastic sheets is poor.

In the embodiment, the plastic recovery material is separated by the buoyancy liquid 22 and the buoyancy liquid 22 remained on the plastic recovery material helps the plastic recovery material to be crushed, and the viscosity of the plastic recovery material is increased by increasing the viscosity of the buoyancy liquid 22, so that the crushing speed is increased, and the plastic recovery material can be formed by adding a thickening agent into common water.

Carry out position restriction to plastics recovery powder through separating broken groove 32 to through the nested slip of cutting edge 38 and centre gripping annular 39, clear up the plastics recovery thing of remaining on cutting edge 38 through centre gripping annular 39, and centre gripping annular 39 can carry out the conflict of certain degree to the plastic sheet, thereby makes the cutting lighter.

Through the rotational speed of control swivel knife rest 36 for cutting blade 38 has certain centripetal force, and when the centripetal force on cutting blade 38 was greater than the appeal of adjusting electromagnet piece 314 to accomodating magnet piece 313, make cutting blade 38 pop out, thereby through the rotatory speed of control swivel knife rest 36, thereby adjust the quantity that cutting blade 38 popped out, thereby increase the quantity of blade and cut the plastics with the cooperation higher rotational speed, and then control the crushing degree of plastics.

Wherein, granulation equipment 4 including set up in heater strip 41 in the inner wall of processing cauldron 31, and set up in annular sword holds in the palm the dry wind orifice 42 of 37 be provided with hot-blast chamber 43 in the rotatory knife rest 36, dry wind orifice 42 through wind channel 44 with hot-blast chamber 43 intercommunication, just dry wind orifice 42 is the acute angle with the contained angle of water flat line, the inner wall of processing cauldron 31 is the toper feed door 315 is last to have seted up the hole 413 of airing exhaust correspond on the processing cauldron 31 the position that annular sword held in the palm 37 is provided with extrudes cutting assembly. Extrude cutting assembly including top-down equidistant set up in separate broken groove 32 on and be used for releasing the gradient valve 45 of the molten state plastics of different density be provided with on the processing cauldron 31 a plurality ofly with the movable ring body 46 of gradient valve 45 one-to-one be provided with a plurality ofly on the movable ring body 46 and be used for the molten state plastics process under the centrifugal force the outside extrusion hole array 47 of gradient valve 45 the outside of movable ring body 46 is rotationally provided with the annular cutter that is used for carrying out the eager grain after extruding the molten state plastics.

The rotation of the treatment kettle 31 is controlled and then stopped, so that the plastic crushed objects slide up and down on the inner wall of the treatment kettle 31, and the plastic crushed objects are dried by hot air in the sliding process, so that the buoyancy liquid 22 on the plastic crushed objects is evaporated. If the additive in the buoyancy liquid 22 cannot be removed by evaporation, the buoyancy liquid 22 and the molten plastic can be separated by directly centrifuging the two.

Wherein, the circular cutting ware is including offering a plurality of "protruding" font recess 48 on the outer wall of treatment kettle 31, activity ring body 46 is through first motor drive rotationally nested "protruding" font recess 48's inboard "protruding" font recess 48's the outside is through second motor drive rotationally nested have annular support body 49 the equidistant a plurality of vertical blades 410 of installing of its length direction of edge of annular support body 49 is adjacent be provided with separation clearance 411 between vertical blade 410, just the cross sectional area of separation clearance 411 is greater than extrude hole array 47's area, it is adjacent extrude hole array 47's haplopore pore diameter different. The gradient valve 45 is a trapezoid block, the processing kettle 31 is provided with a plurality of sliding grooves, the top end of the gradient valve 45 is linearly slidably mounted at the bottom end of the sliding grooves, the inner side of the sliding grooves is fixedly provided with an engagement block 412, and one end of the sliding grooves enables the gradient valve 45 to abut against the engagement block 412 through a compression spring 412.

Through the cutting mode of differential rotation, when the plastic recovery object is molten, the molten plastic recovery object can be centrifugally separated, so that plastics with different components in the plastic recovery object can be respectively led out.

The thickness of the plastic extruded particles is adjusted by adjusting the extrusion hole array 47 to be aligned with the gradient valve 45, and then cutting is carried out simultaneously.

In the prior art, the molten plastic extrusion process is to extrude the molten plastic through an extrusion port with a fixed shape under the action of a screw, and cut the molten plastic after water cooling and shaping under the action of a tractor, so that the plastic extrusion process is mainly used for mass continuous production of various products with the same cross section and can also be used for plastic modification granulation. The extruder for plastic pelletizing generally comprises: the motor, reducing gear box, thrust bearing, barrel and spiral extrusion molding pole, spiral extrusion molding pole are installed in the barrel, and spiral extrusion molding pole includes double thread or single thread structure. The spiral extrusion rod is actually a bevel or ramp wound on the central layer with the purpose of increasing the pressure to overcome the greater resistance. There are three main types of resistance to be overcome during extrusion: the friction of the solid particles against the cylinder wall, the adhesion of the melt to the cylinder wall, the resistance to the flow of the melt inside it when pushed forward, leading to the following problems: (1) the abrasion of the spiral plastic extrusion rod and the inner wall of the cylinder body is very serious, and the spiral plastic extrusion rod and the cylinder body need to be replaced after the cylinder is used for about one year, so that the production cost is increased; (2) the plastic granulation process is unstable when the plastic formula is changed; (3) the existing plastic extruding machine has long discharge time when being stopped, large reactive loss and time and labor waste when a head die of the plastic extruding machine is assembled and disassembled; (4) the existing plastic extruding machine has slow granulation efficiency and is difficult to greatly improve the production efficiency.

And in this embodiment, the melted plastic product is extruded by centrifugal force and automatically extruded out of the equipment, and this way does not need the screw to extrude the plastic product and wear the screw, thus greatly reducing the installation difficulty and replacement difficulty of operators.

And the extruded article is directly outside the equipment, and the extrudate can be cooled and formed through external low temperature or low temperature air current, water cooling is not needed in the forming process, and the article after the procedure is dried in the water cooling process in the prior art, so that the step can be omitted.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims

1. The utility model provides a renewable resources retrieves and utilizes device, includes base (1) has set gradually letter sorting equipment (2), crushing equipment (3) and granulation equipment (4), its characterized in that:

the sorting equipment (2) comprises a buoyancy channel (21) for separating high-density substances and low-density substances in recovered substances through liquid buoyancy, a supply mechanism for circularly supplying liquid to the buoyancy channel (21), and a feeding mechanism for conveying a mixture of the separated low-density substances and the liquid to the crushing equipment (3), wherein the granulating equipment (4) is used for granulating and recycling the crushed mixture.

2. The recycling and utilizing apparatus of claim 1, wherein: the supply mechanism comprises a liquid inlet channel (23) communicated with one end of the buoyancy channel (21) and a centrifugal pump (24) fixedly installed on the liquid inlet channel (23), buoyancy liquid (22) is filled in the liquid inlet channel (23), and the buoyancy liquid (22) is pumped into the buoyancy channel (21) by the centrifugal pump (24) and flows to the other end of the buoyancy channel (21);

the feeding mechanism comprises an inclined guide-out groove (210) fixedly connected to the other end of the buoyancy channel (21), and a drainage channel (211) used for discharging part of the buoyancy liquid (22) is formed in the inclined guide-out groove (210);

the top end of the buoyancy channel (21) is provided with a feeding port (25), a magnetic separation groove (26) for adsorbing metal is installed in the buoyancy channel (21), and a sinking groove (27) for collecting high-density impurities is formed in the bottom of the buoyancy channel (21).

3. The recycling and utilizing apparatus of claim 2, wherein: an outer discharging door (28) which is automatically opened after the glass reaches a certain weight is movably mounted at the bottom of the sinking groove (27), a liquid injection collecting cavity (29) which is used for preventing the buoyancy liquid (2) in the buoyancy channel (21) from flowing downwards is arranged below the outer discharging door (28), and a communicating pore channel (214) is formed in the outer discharging door (28).

4. The recycling and utilizing apparatus of claim 3, wherein: one side of the outer discharging door (28) is hinged to one side of the sinking groove (27), the other side of the outer discharging door (28) is fixed to the other side of the sinking groove (27) through a bearing electromagnet block (212), a sealing rubber ring used for being hermetically attached to the bottom end of the sinking groove (27) is fixedly mounted on the outer discharging door (28), and the bottom end of the outer discharging door (28) is connected to one side, far away from the bearing electromagnet block (212), of the liquid injection collection cavity (29) through a reset spring (213).

5. The recycling apparatus for renewable resources according to claim 2, 3 or 4, wherein: the crushing device (3) comprises a treatment kettle (31) which is rotatably arranged on the base (1) through a hollow shaft (311), and a feeding door (315) for bearing plastics on the inclined guide-out groove (210) is movably arranged at the top end of the treatment kettle (31);

a plurality of separating and crushing grooves (32) are uniformly formed in the inner wall of the treatment kettle (31), an independent rotating rod (33) with the rotating speed different from or the rotating direction opposite to that of the hollow shaft (311) is rotatably mounted in the hollow shaft (311), a bottom supporting circular plate (34) is fixedly mounted at the top end of the independent rotating rod (33), and the edge of the bottom supporting circular plate (34) is relatively rotatably mounted at the bottom end of the treatment kettle (31) through a sealing engagement groove (35);

the center fixed mounting who holds in the palm end plectane (34) top has rotatory knife rest (36), a plurality of annular sword holds in the palm (37) are installed to the outside top-down equidistant of rotatory knife rest (36) a plurality of cutting edge (38) through centrifugal force self-adaptation subassembly movable mounting on annular sword holds in the palm (37) offer on the inner wall of processing cauldron (31) and be used for the nestification centre gripping annular (39) of cutting edge (38).

6. The recycling and utilizing apparatus of claim 5, wherein: the centrifugal force self-adaptive assembly comprises a knife retracting groove (310) formed in the annular knife holder (37), the cutting blade (38) is embedded in the knife retracting groove (310), one end of the cutting blade (38) is hinged to one end of the knife retracting groove (310), the other end of the cutting blade (38) is connected to the other end of the knife retracting groove (310) through an elastic piece (312), a magnet accommodating block (313) is fixedly mounted on the cutting blade (38), and an adjusting electromagnet block (314) used for attracting the magnet accommodating block (313) to enable the cutting blade (38) to be accommodated in the knife retracting groove (310) is mounted in the knife retracting groove (310).

7. The recycling and utilizing apparatus of claim 6, wherein: granulation equipment (4) including set up in heater strip (41) in handling cauldron (31) inner wall, and set up in dry wind orifice (42) that annular sword held in the palm (37) be provided with hot-blast chamber (43) in rotatory knife rest (36), dry wind orifice (42) through wind channel (44) with hot-blast chamber (43) intercommunication, just dry wind orifice (42) are the acute angle with the contained angle of water flat line, the inner wall of handling cauldron (31) is the toper hole of airing exhaust (413) has been seted up on feed door (315) it corresponds on cauldron (31) the position of annular sword support (37) is provided with extrudes cutting assembly.

8. The recycling and utilizing apparatus of claim 7, wherein: extrude cutting assembly including top-down equidistant set up in separate on broken groove (32) and be used for releasing gradient valve (45) of the molten state plastics of different density be provided with on processing cauldron (31) a plurality ofly with movable ring body (46) of gradient valve (45) one-to-one be provided with a plurality ofly on movable ring body (46) and be used for the molten state plastics process under the centrifugal force effect outside extrusion's of gradient valve (45) extrusion hole array (47) the outside of movable ring body (46) is rotationally provided with and is used for carrying out the circular cutting ware of cutting grain after extruding the molten state plastics.

9. The recycling and utilizing apparatus of claim 8, wherein: the ring cutter is including offering a plurality of "protruding" font recess (48) on the outer wall of treatment kettle (31), activity ring body (46) are rotatably nested through first motor drive in the inboard of "protruding" font recess (48) the outside of "protruding" font recess (48) is rotatably nested through second motor drive has annular support body (49) a plurality of vertical blades (410) are equidistantly installed along its length direction of annular support body (49), and is adjacent be provided with between vertical blade (410) and separate clearance (411), just the cross sectional area who separates clearance (411) is greater than extrude the area of hole array (47), adjacent the haplopore pore diameter who extrudes hole array (47) is different.

10. The recycling and utilizing apparatus of claim 9, wherein: the gradient valve (45) is a trapezoid block, a plurality of sliding grooves are formed in the treatment kettle (31), the top end of the gradient valve (45) can be linearly and slidably mounted at the bottom end of each sliding groove, an engagement block (412) is fixedly mounted on the inner side of each sliding groove, and one end of each sliding groove enables the gradient valve (45) to abut against the engagement block (412) through a compression spring (412).