Process and device for recycling waste residues of plastic granulator

Abstract

The invention provides a plastic granulator waste residue recycling process and device, and relates to the technical field of plastic waste residue recycling, the plastic granulator waste residue recycling device comprises a cleaning device, the cleaning device comprises a cleaning water tank, a driving motor is fixedly arranged on the outer side of one short side wall of the cleaning water tank, and a rotating shaft of the driving motor is fixedly sleeved with a driving wheel; a vertical shifting shaft is welded on a rim of the driving wheel; a rectangular screen fence is arranged in the cleaning water tank in a sliding mode, the rectangular screen fence is jointly composed of a rectangular keeping frame, a row of longitudinal handrails and a row of metal blocking nets, and a row of vertical rake shafts are welded to the top ends of the row of longitudinal handrails; two L-shaped sliding rods are symmetrically welded to the top end of the rectangular screen fence, and a U-shaped vertical frame sliding in the longitudinal direction is arranged at the top of the cleaning water tank. And through power transmission of the U-shaped longitudinal frame, the three functions can be driven and executed by one driving motor, so that the need of configuring driving units for the three functions respectively can be omitted, the manufacturing cost of the cleaning device can be reduced, and the energy efficiency ratio of the cleaning device can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic waste residue recycling, and particularly to a process and device for recycling plastic granulator waste residue. Background Art

[0002] During the production process of traditional plastic granulators, waste residues are generated. If these waste residues are not properly disposed of, they will not only occupy a large amount of land resources, but may also pollute the soil and water bodies due to leachate, and incineration will produce harmful substances such as dioxins to pollute the atmosphere. Therefore, it is necessary to design a process and device for recycling plastic granulator waste residue to address this problem.

[0003] In the existing cleaning devices in the recycling devices, most use three different mechanisms to perform tumbling cleaning, lifting and drying, and vibrating discharging on the crushed small plastic blocks. Moreover, these three mechanisms need to be respectively equipped with single sets of power units, which will not only greatly complicate the structure of the recycling device, but also significantly increase the energy consumption and cost of the recycling device, resulting in poor practicability and energy efficiency ratio of the recycling device. Summary of the Invention

[0004] In view of this, the present invention provides a process and device for recycling plastic granulator waste residue to solve the problems of poor practicability and energy efficiency ratio of the recycling device.

[0005] The technical solution proposed by the present invention is as follows: A process and device for recycling plastic granulator waste residue, specifically including a cleaning device. The cleaning device includes a cleaning water tank. On the outer side of a short side wall of the cleaning water tank, a driving motor is fixedly arranged. A driving wheel is fixedly sleeved on the rotating shaft of the driving motor, and a vertical stirring shaft is welded on the rim of the driving wheel; Inside the cleaning water tank, a rectangular sieve fence is slidably arranged. The rectangular sieve fence is jointly composed of a rectangular retaining frame, a row of vertically arranged railings, and a row of metal fences. At the top of a row of vertically arranged railings, a row of vertical raking shafts are welded; At the top of the rectangular sieve fence, two L-shaped sliding rods are symmetrically welded. On the top of the cleaning water tank, a U-shaped vertical frame that slides longitudinally is arranged. The two L-shaped sliding rods are slidably connected with the U-shaped vertical frame; A U-shaped vertical frame is welded on the U-shaped vertical frame. A strip-shaped driving groove is formed through the middle part of the horizontal side rod of the U-shaped vertical frame. The vertical stirring shaft is inserted and slidably matched with the strip-shaped driving groove; At both ends of the rectangular retaining frame, two rectangular caulking plates that are pushed and reset by springs are symmetrically and slidably installed; When the length direction of the rectangular retaining frame is centered inside the cleaning water tank, the two outer long sides of the two rectangular caulking plates are correspondingly in abutting contact with the inner sides of the two short side walls of the cleaning water tank.

[0006] Further, two hydraulic cylinders are symmetrically arranged on the cleaning water tank, and a center drive block is welded to the top end of the piston rod of the hydraulic cylinder; the first end part of the L-shaped slide rod is symmetrically welded with L-shaped support rods, and a longitudinal guide rail shaft is welded between the bottom ends of the two L-shaped support rods. The longitudinal guide rail shaft is in sliding fit with the center drive block through penetration.

[0007] Two longitudinal guide shafts are symmetrically welded at the middle positions of the upper half parts of the two long side walls of the cleaning water tank, and the bottom end part of the U-shaped vertical frame is in sliding fit with the two longitudinal guide shafts.

[0008] The U-shaped longitudinal frame is in sliding sleeve fit with the upper half part of the top end of the cleaning water tank, and the open end of the U-shaped longitudinal frame is welded and fixed to the two vertical side rods of the U-shaped vertical frame.

[0009] Further, two U-shaped mounting grooves are symmetrically opened at both end parts of the rectangular holding frame, and two rectangular caulking plates are correspondingly in sliding fit with the two U-shaped mounting grooves.

[0010] Two limiting shafts are symmetrically welded on the opposite sides of the two rectangular caulking plates. Four shaft holes are symmetrically opened at the positions close to the U-shaped mounting grooves inside the two long side rods of the rectangular holding frame. The four limiting shafts are correspondingly in sliding fit with the four shaft holes in the form of spring push reset.

[0011] Further, a row of longitudinal railings is welded inside the rectangular holding frame, and a row of metal fences cover and connect the space between the row of longitudinal railings and the space between the two outer longitudinal railings and the two short side rods of the rectangular holding frame.

[0012] When the rectangular sieve fence slides down into the lower layer space inside the cleaning water tank, the rectangular sieve fence is completely immersed in the cleaning water contained in the lower layer space of the cleaning water tank. At this time, small plastic waste particles made from crushed plastic waste are fed into the cleaning water and carried on the top end of the rectangular sieve fence for cleaning.

[0013] When the rectangular sieve fence slides up into the middle layer space inside the cleaning water tank, the rectangular sieve fence and the washed plastic particles are taken out of the cleaning water for drying.

[0014] When the rectangular sieve fence slides up into the top opening of the cleaning water tank, the dried plastic particles are lifted to the top opening of the cleaning water tank for discharging.

[0015] Further, the two hydraulic cylinders are fixed at the middle positions on the outer sides of the two long side walls of the cleaning water tank.

[0016] A conical sewage collecting cover is welded at the bottom of the cleaning water tank, and an L-shaped sewage discharge pipe with a self-contained valve is welded at the center position of the bottom of the sewage collecting cover. A water injection pipe with a self-contained valve is welded at one end position of the bottom of one long side wall of the cleaning water tank.

[0017] Furthermore, four vertical pillars are symmetrically welded to the bottom of the cleaning water tank, a material receiving cover with a conical structure is welded on the four vertical pillars, and a short material discharge pipe is welded at the bottom center of the material receiving cover.

[0018] Furthermore, it also includes a drying device, which is arranged above the cleaning device;

[0019] The drying device comprises a trapezoidal air distribution hood and an electric heating fan. The top of the trapezoidal air distribution hood is symmetrically fixed with two air outlets of the electric heating fan connected thereto. Four vertical support rods are symmetrically welded between the trapezoidal air distribution hood and the cleaning water tank.

[0020] Furthermore, it also includes a waste residue pretreatment device, a crushing device, a melt granulation device, a quality inspection device and a packaging and storage device. The above devices are arranged in sequence according to the process flow and connected by a screw conveyor. The connection order is: waste residue pretreatment device, crushing device, cleaning device, drying device, melt granulation device quality inspection device, packaging and storage device.

[0021] Further, the following steps are included:

[0022] ①. The plastic waste generated by the plastic granulator is collected and classified according to different types of plastics and sent to the plastic waste pretreatment device to remove large impurities such as metal pieces, stones, wood chips, etc. in the waste;

[0023] ②, send the plastic waste after impurity removal to the crushing device, and crush it into smaller particles through the crushing device;

[0024] ③. Send the small particles of plastic waste formed after crushing into the cleaning water tank of the cleaning device, add an appropriate amount of cleaning water and surfactant into the cleaning water tank, and clean the small particles of plastic waste to remove oil, dust and other pollutants on the surface of the plastic waste;

[0025] ④. The small particles of plastic waste after cleaning are lifted out of the cleaning water, and then dried by the drying device. The drying temperature and time are adjusted according to the type and characteristics of the plastic, and the drying temperature is controlled between 50℃-100℃;

[0026] ⑤. Transport the dried small-particle plastic waste to the melting granulation device for melting and re-granulation to obtain recycled plastic particles;

[0027] ⑥. Transport the recycled plastic particles to the quality inspection device to inspect the appearance, size, density, melting point, mechanical properties and other indicators of the particles;

[0028] ⑦. Transport the qualified recycled plastic particles to the packaging and storage device for bagging or temporary storage.

[0029] The invention provides a plastic granulator waste residue recycling process and device, which has the following beneficial effects:

[0030] 1. The arrangement of two retractable and sliding rectangular caulking plates can provide a margin space for the high-frequency sliding of the rectangular screen fence inside the cleaning water tank, which helps to ensure the normal high-frequency sliding of the rectangular screen fence, and the arrangement of the two retractable and sliding rectangular caulking plates can also adapt to the high-frequency reciprocating sliding of the rectangular screen fence, and adapt to covering the vacant space of constantly changing size between the two ends of the rectangular screen fence and the two short side walls of the cleaning water tank when the high-frequency reciprocating sliding occurs, thereby preventing small particles of plastic waste from leaking into the cleaning water at the bottom of the cleaning water tank through the vacant space, which requires subsequent additional separation and collection.

[0031] 2. The supporting mechanism composed of the rectangular screen and two rectangular caulking plates can be used to implement tumbling and stirring cleaning of small-particle plastic waste residue, vibration tumbling drying of small-particle plastic waste residue, and vibration tumbling unloading of small-particle plastic waste residue. It has a multifunctional use effect of three functions in one device, which saves the need to configure a set of special implementation mechanisms for the above three functions respectively, helps to simplify the structure of the cleaning device and reduce the overall cost of the recycling device to a certain extent.

[0032] 3. Through the power transmission of the U-shaped longitudinal frame, the above three functions can be driven and executed by a common drive motor, which can save the need to configure drive units for the above three functions separately, help reduce the cost of the cleaning device and improve its energy efficiency; the design of sliding cooperation between the two L-shaped slide bars and the U-shaped vertical frame can make the rectangular screen fence always maintain a transmission connection with the drive motor when it is lifted or slid down, avoiding the power connection between the drive motor and the rectangular screen fence cannot adapt to the lifting and sliding of the rectangular screen fence, resulting in the interruption of the power connection with the drive motor when the rectangular screen fence is lifted and slid, which helps to ensure the normal and effective implementation of the multi-purpose drive function of the drive motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0034] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0035] In the attached picture:

[0036] Figure 1 A schematic diagram showing the front side view of the present invention as a whole is shown;

[0037] Figure 2 A schematic diagram showing the back side view of the present invention as a whole is shown;

[0038] Figure 3Shows the structural schematic diagram of the cleaning water tank in the present invention;

[0039] Figure 4 Shows the schematic diagram of the bottom side view of the cleaning water tank in the present invention;

[0040] Figure 5 Shows the schematic diagram of the half-section internal structure of the washing water tank in the present invention;

[0041] Figure 6 Shows the structural schematic diagram of the rectangular holding frame and the U-shaped vertical frame in the present invention;

[0042] Figure 7 Shows the structural schematic diagram of the U-shaped vertical frame and the U-shaped vertical frame in the present invention;

[0043] Figure 8 Shows the schematic diagram of the剖切 structure of one end part of the rectangular holding frame in the present invention;

[0044] Fig. 9 Shows the schematic diagram of the disassembled state of the rectangular caulking plate in the present invention.

[0045] List of reference numerals:

[0046] 1. Waste pretreatment device;

[0047] 2. Crushing device;

[0048] 3. Cleaning device;

[0049] 31. Cleaning water tank; 311. Vertically arranged guide shaft; 312. Pollutant collecting cover;

[0050] 32. Material receiving cover; 321. Short feeding pipe;

[0051] 33. Upright support pillar;

[0052] 34. Water injection pipe;

[0053] 35. L-shaped sewage discharge pipe;

[0054] 36. Rectangular sieve bar; 361. L-shaped sliding rod; 3611. L-shaped support rod; 3612. Vertically arranged guide rail shaft; 362. Rectangular caulking plate; 3621. Limit shaft; 363. Upright rake shaft; 364. U-shaped installation groove; 365. Rectangular holding frame; 3651. Shaft hole; 366. Vertically arranged railing;

[0055] 37. U-shaped vertical frame;

[0056] 38. U-shaped vertical frame; 381. Strip-shaped driving groove;

[0057] 39. Driving motor; 391. Driving wheel; 3911. Upright dialing shaft;

[0058] 310, hydraulic cylinder; 3101, center transmission block;

[0059] 4. Drying device; 41. Trapezoidal air hood; 42. Electric heating fan; 43. Vertical support pole;

[0060] 5. Melt granulation device;

[0061] 6. Quality inspection device;

[0062] 7. Packaging and storage devices. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0064] Example 1, please refer to Figures 1 to 9 :

[0065] The present embodiment proposes a waste residue recycling device for a plastic granulator, including a cleaning device 3, the cleaning device 3 includes a cleaning water tank 31, a driving motor 39 is fixedly arranged on the outer side of a short side wall of the cleaning water tank 31, a driving wheel 391 is fixedly sleeved on the rotating shaft of the driving motor 39, and a vertical dial shaft 3911 is welded on the wheel rim of the driving wheel 391; a rectangular screen fence 36 is slidably arranged inside the cleaning water tank 31, and the rectangular screen fence 36 is composed of a rectangular retaining frame 365, a row of longitudinal railings 366 and a row of metal fences (in order to prevent problems such as blackening and unclear lines, only Figure 6 A row of vertical rake shafts 363 are welded to the top of a row of longitudinal railings 366; two L-shaped slide bars 361 are symmetrically welded to the top of the rectangular screen fence 36; a vertical U-shaped frame 37 that slides longitudinally is provided on the top of the cleaning water tank 31, and the two L-shaped slide bars 361 are slidably connected to the U-shaped vertical frame 37; a U-shaped vertical frame 38 (such as Figure 7 As shown in the figure, a strip driving groove 381 is penetrated through the middle part of the transverse side rod of the U-shaped longitudinal frame 38, and the vertical dial shaft 3911 is plugged into and slidably matched with the strip driving groove 381; two rectangular caulking plates 362 which are pushed and reset by springs are symmetrically slidably installed on the two end parts of the rectangular retaining frame 365; when the rectangular retaining frame 365 is centered in the length direction of the inside of the cleaning water tank 31, the two outer long sides of the two rectangular caulking plates 362 correspond to the inner sides of the two short side walls of the cleaning water tank 31.

[0066] Preferably, there are two hydraulic cylinders 310 symmetrically arranged on the cleaning water tank 31, and a center drive block 3101 is welded to the top end of the piston rod of the hydraulic cylinder 310 (as shown in Figure 4 ); the first end portions of the L-shaped slide rods 361 are symmetrically welded with L-shaped support rods 3611, and a longitudinal guide rail shaft 3612 is welded between the bottom ends of the two L-shaped support rods 3611 (as shown in Fig. 9 ), and the longitudinal guide rail shaft 3612 is in through-sliding fit with the center drive block 3101; the bottom ends of the two L-shaped slide rods 361 are fixedly welded to the middle parts of the two long side rods of the rectangular holding frame 365, and the vertical rod sections of the two L-shaped slide rods 361 are in through-sliding fit with the top side rod of the U-shaped vertical frame 37; two longitudinal guide shafts 311 are symmetrically welded at the middle positions of the upper half parts of the two long side walls of the cleaning water tank 31, and the bottom end portion of the U-shaped vertical frame 37 is in sliding fit with the two longitudinal guide shafts 311; the U-shaped longitudinal frame 38 is in sliding sleeve fit with the top half part of the cleaning water tank 31, and the open end of the U-shaped longitudinal frame 38 is fixedly welded to the two vertical side rods of the U-shaped vertical frame 37.

[0067] Preferably, two U-shaped mounting grooves 364 are symmetrically formed at both end portions of the rectangular holding frame 365, and two rectangular caulking plates 362 are correspondingly in sliding fit with the two U-shaped mounting grooves 364; two limiting shafts 3621 are symmetrically welded on the opposite sides of the two rectangular caulking plates 362 (as shown in Figure 8 ), and four shaft holes 3651 are symmetrically formed at the positions close to the U-shaped mounting grooves 364 inside the two long side rods of the rectangular holding frame 365, and the four limiting shafts 3621 are correspondingly in sliding fit with the four shaft holes 3651 in the form of spring top push and reset.

[0068] Preferably, a row of longitudinal railings 366 is welded inside the rectangular holding frame 365, and a row of metal meshes are covered and connected in the space between the row of longitudinal railings 366 and the intervals between the two outer longitudinal railings 366 and the two short side rods of the rectangular holding frame 365;

[0069] When the rectangular sieve fence 36 slides down into the lower layer space inside the cleaning water tank 31, the rectangular sieve fence 36 is completely immersed in the cleaning water contained in the lower layer space of the cleaning water tank 31, and at this time, small plastic waste particles made by crushing plastic waste are fed into the cleaning water and carried on the top end of the rectangular sieve fence 36 for cleaning;

[0070] When the rectangular sieve fence 36 slides up into the middle layer space inside the cleaning water tank 31, the rectangular sieve fence 36 and the washed plastic particles are taken out of the cleaning water for drying;

[0071] When the rectangular sieve fence 36 slides up into the top opening of the cleaning water tank 31, the dried plastic particles are lifted to the top opening of the cleaning water tank 31 for discharging.

[0072] Preferably, the two hydraulic cylinders 310 are fixed at the middle position of the outer sides of the two long side walls of the cleaning water tank 31, and the two hydraulic cylinders 310 are connected to the external hydraulic power system through high-pressure oil pipes;

[0073] A conical dirt collecting cover 312 is welded to the bottom of the cleaning water tank 31, an L-shaped sewage discharge pipe 35 with a valve is welded to the bottom center of the dirt collecting cover 312, and a water injection pipe 34 with a valve is welded to one end of the bottom of a long side wall of the cleaning water tank 31.

[0074] Preferably, four vertical pillars 33 are symmetrically welded to the bottom of the cleaning water tank 31 , a material receiving cover 32 with a conical structure is welded on the four vertical pillars 33 , and a short material discharge pipe 321 is welded at the bottom center of the material receiving cover 32 .

[0075] Preferably, it further comprises a drying device 4, which is arranged above the cleaning device 3;

[0076] The drying device 4 includes a trapezoidal air distribution hood 41 and an electric hot air blower 42 . The top of the trapezoidal air distribution hood 41 is symmetrically fixed with two air outlets of the electric hot air blower 42 connected thereto. Four vertical support rods 43 are symmetrically welded between the trapezoidal air distribution hood 41 and the cleaning water tank 31 .

[0077] Preferably, it also includes a waste residue pretreatment device, a crushing device, a melt granulation device, a quality inspection device and a packaging and storage device, which are all prior art, are not described in detail, and are not shown in the figure. The above devices are arranged in sequence according to the process flow and connected by a screw conveyor, and the connection order is: waste residue pretreatment device, crushing device, cleaning device 3, drying device 4, melt granulation device quality inspection device, packaging and storage device;

[0078] The working principle, specific details, implementation steps, functions and interrelationships of the above-mentioned features, and their roles in implementing the present invention are described in detail below:

[0079] Through the power transmission between the vertical dial shaft 3911 and the strip driving groove 381, the driving motor 39 can drive the U-shaped longitudinal frame 38, the U-shaped vertical frame 37, the L-shaped slide bar 361 and the rectangular screen fence 36 to slide back and forth at high frequency along the two longitudinal guide shafts 311 when rotating and driving the driving wheel 391, and when the L-shaped slide bar 361 is driven to slide, it drives the two longitudinal guide shafts 3612 to slide synchronously along the two center transmission blocks 3101; when the rectangular screen fence 36 slides back and forth at high frequency in the lower space inside the cleaning water tank 31, it can drive the small particles of plastic waste carried on its top to move back and forth synchronously at high frequency. When the small particles of plastic waste move back and forth synchronously at high frequency, due to the inertia of its body and the retention effect generated by the cleaning water, it will move back and forth with the The rectangular screen fence 36 slides relative to each other and produces a tumbling effect. Under the action of the tumbling effect, the small particles of plastic waste can continuously roll and rub against each other and fully and comprehensively contact with the cleaning water and the surface activity added to the cleaning water, so that the oil, dust and other pollutants on the surface can be thoroughly and effectively cleaned; because the multiple rows of vertical rake shafts 363 are directly integrated and fixed to the rectangular screen fence 36, when the small particles of plastic waste slide relative to the rectangular screen fence 36, the multiple rows of vertical rake shafts 363 can perform sliding, scraping and stirring on the small particles of plastic waste, which can further enhance the tumbling effect of the small particles of plastic waste, and further enhance the cleaning effect of the dirt on the surface of the small particles of plastic waste; when the rectangular screen fence 36 is driven to slide back and forth at high frequency, its The two rectangular caulking plates 362 are pressed in a high-frequency alternating manner. When the rectangular caulking plates 362 are pressed, they can be pushed back by the short side walls on the corresponding sides of the cleaning water tank 31 to slide toward the inside of the U-shaped mounting groove 364 to leave space for the rectangular screen fence 36 to slide. When the rectangular caulking plates 362 slide inwardly under pressure, the springs on the two limiting shafts 3621 are compressed. When the rectangular screen fence 36 slides away from the pressed rectangular caulking plates 362, the rectangular caulking plates 362 lose the pressure of the rectangular screen fence 36 and can be automatically pushed out of the U-shaped mounting groove 364 by the springs on the two limiting shafts 3621 thereon, and make up for the space vacated between the short side walls of the cleaning water tank 31 when the rectangular screen fence 36 slides away. During the above process, the outer long side of the rectangular caulking plate 362 is always in contact with the inner side of the short side wall of the cleaning water tank 31. In this way, the telescopic sliding arrangement of the two rectangular caulking plates 362 can provide a margin space for the high-frequency sliding of the rectangular screen 36 inside the cleaning water tank 31, which helps to ensure the normal high-frequency sliding of the rectangular screen 36, and the telescopic sliding arrangement of the two rectangular caulking plates 36 can also adapt to the high-frequency reciprocating sliding of the rectangular screen 36, and adapt to covering the vacant space of constantly changing size between the two ends of the rectangular screen 36 and the two short side walls of the cleaning water tank 31 when the high-frequency reciprocating sliding occurs, thereby preventing small particles of plastic waste from leaking into the cleaning water at the bottom of the cleaning water tank 31 through the vacant space, and requiring subsequent additional separation and collection.

[0080] When the rectangular sieve bar 36 slides back and forth at high frequency in the middle space inside the cleaning water tank 31, it can shake, vibrate and tumble the small particle plastic waste residues lifted out of the cleaning water, so that most of the small particle plastic waste residues can be tumbled and transferred to the top surface of the small particle plastic layer (the small particles of plastic accumulate to form a stack layer at the top of the rectangular sieve bar 36) to receive sufficient, comprehensive and thorough blowing and drying by the drying device 4, improving the drying effect on the small particles of plastic.

[0081] When the rectangular sieve bar 36 slides in the top opening of the cleaning water tank 31, it can perform vibrating tumbling discharging on the dried small particle plastic waste residues. When the small particle plastic waste residues vibrate and tumble at the top of the rectangular sieve bar 36, they are continuously guided and gushed out from the four sides of the rectangular sieve bar 36 and fall into the receiving cover 32; it should be noted that when the rectangular sieve bar 36 is lifted to the top opening of the cleaning water tank 31 for vibrating discharging, its top surface should be flush with the top opening of the cleaning water tank 31, and it should be avoided that the rectangular sieve bar 36 and the two rectangular caulking plates 362 are disengaged from the top opening of the cleaning water tank 31.

[0082] The loading mechanism jointly composed of the rectangular sieve bar 36 and the two rectangular caulking plates 362 can not only be used to tumble and stir the small particle plastic waste residues for cleaning, but also perform vibrating tumbling drying on the small particle plastic waste residues, and can also perform vibrating tumbling discharging on the small particle plastic waste residues, with the multi-functional use effect of one device for three purposes. This use effect can save the need to separately configure a set of special implementation mechanisms for each of the above three functions, which helps to simplify the structure of the cleaning device 3 and to a certain extent reduce the overall cost of the recycling device; through the power transmission of the U-shaped vertical frame 38, the above three functions can share one driving motor 39 for driving and execution, which can save the need to separately configure driving units for the above three functions, helping to reduce the cost of the cleaning device 3 and improve its energy efficiency ratio; the design of the two L-shaped slide bars 361 sliding through and cooperating with the U-shaped vertical frame 37 can enable the rectangular sieve bar 36 to always maintain a transmission connection with the driving motor 39 when being lifted or lowered, avoiding the power connection between the driving motor 39 and the rectangular sieve bar 36 being unable to adapt to the lifting and sliding of the rectangular sieve bar 36, resulting in the interruption of the power connection between the driving motor 39 and the rectangular sieve bar 36 during the lifting and sliding of the rectangular sieve bar 36, which helps to ensure the normal and effective implementation of the multi-purpose driving function of the driving motor 39.

[0083] Through the L-shaped slide bars 361, the two hydraulic cylinders 310 can drive the rectangular sieve bar 36 to lift and lower; the design of the two longitudinal guide rails 3612 sliding through and cooperating with the two circular center transmission blocks 3101 can ensure that the rectangular sieve bar 36 always maintains a continuous and effective transmission connection with the two hydraulic cylinders 310 when being driven by high-frequency sliding.

[0084] The drying device 4 blows and dries the small-particle plastic waste residue through two electric hot blowers 42; the cleaned and dried small-particle plastic waste residue received in the receiving cover 32 is transported to the melting granulation device 5 through the unloading short pipe 321 and the screw conveyor between the cleaning device 3 and the melting granulation device 5.

[0085] Based on the first embodiment, the second embodiment:

[0086] This embodiment proposes a plastic granulator waste residue recycling process, which is applied to the recycling device in the first embodiment, and includes the following operating steps:

[0087] ①, the plastic waste residue generated during the production of the plastic granulator is collected and classified according to different types of plastics and sent to the plastic waste residue pretreatment device 1 to remove large impurities such as metal pieces, stones, wood chips, etc. in the waste residue;

[0088] ②, sending the plastic waste residue after impurity removal to the crushing device 2, and crushing it into smaller particles by the crushing device 2;

[0089] ③. Send the small particles of plastic waste formed after crushing into the cleaning water tank 31 of the cleaning device 3, add an appropriate amount of cleaning water and surfactant into the cleaning water tank 31, and clean the small particles of plastic waste to remove oil, dust and other pollutants on the surface of the plastic waste;

[0090] ④. The small particles of plastic waste after cleaning are lifted out of the cleaning water, and then dried by the drying device 4. The drying temperature and time are adjusted according to the type and characteristics of the plastic, and the drying temperature is controlled between 50°C and 100°C;

[0091] ⑤. The dried small-particle plastic waste residue is transported to the melting granulation device 5 for melting and re-granulation to obtain recycled plastic particles;

[0092] ⑥. Transport the recycled plastic particles to the quality inspection device 6 to inspect the appearance, size, density, melting point, mechanical properties and other indicators of the particles;

[0093] ⑦. The recycled plastic particles of qualified quality are transported to the packaging and storage device 7 for bagging or temporary storage.

[0094] In this article, there are a few points to note:

[0095] 1. The drawings of the embodiments of the present invention only involve structures related to the embodiments of the present invention, and other structures can refer to the general design.

[0096] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0097] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A plastic granulator waste residue recycling device, comprising a cleaning device (3), characterized in that: The cleaning device (3) includes a cleaning water tank (31). A driving motor (39) is fixedly arranged on the outer side of a short side wall of the cleaning water tank (31). A driving wheel (391) is fixedly sleeved on the rotating shaft of the driving motor (39). A vertical dialing shaft (3911) is welded on the rim of the driving wheel (391). A rectangular sieve fence (36) is slidably arranged inside the cleaning water tank (31). The rectangular sieve fence (36) is composed of a rectangular holding frame (365), a row of vertically arranged railings (366) and a row of metal fences. A row of vertical raking shafts (363) are welded at the tops of the row of vertically arranged railings (366). Two L-shaped sliding rods (361) are symmetrically welded at the top of the rectangular sieve fence (36). A U-shaped vertical frame (37) that slides longitudinally is arranged at the top of the cleaning water tank (31). The two L-shaped sliding rods (361) are slidably connected with the U-shaped vertical frame (37). A U-shaped vertical frame (38) is welded on the U-shaped vertical frame (37). A strip-shaped driving groove (381) is formed through the middle part of the horizontal side rod of the U-shaped vertical frame (38). The vertical dialing shaft (3911) is inserted into and slidably matched with the strip-shaped driving groove (381). Two rectangular caulking plates (362) that are pushed and reset by springs are symmetrically and slidably installed at the two end parts of the rectangular holding frame (365). When the rectangular holding frame (365) is centered in the length direction inside the cleaning water tank (31), the two outer long sides of the two rectangular caulking plates (362) are correspondingly abutted and contacted with the inner sides of the two short side walls of the cleaning water tank (31).

2. A plastic granulator waste residue recycling device according to claim 1, characterized in that: Two hydraulic cylinders (310) are symmetrically arranged on the cleaning water tank (31). The top of the piston rod of the hydraulic cylinder (310) is welded with a central driving block (3101). L-shaped support rods (3611) are symmetrically welded at the first end parts of the L-shaped sliding rods (361). A vertical guide shaft (3612) is welded between the bottoms of the two L-shaped support rods (3611). The vertical guide shaft (3612) is inserted into and slidably matched with the central driving block (3101). The bottoms of the two L-shaped sliding rods (361) are fixedly welded to the middle parts of the two long side rods of the rectangular holding frame (365). The vertical rod sections of the two L-shaped sliding rods (361) are inserted into and slidably matched with the top side rod of the U-shaped vertical frame (37). Two vertical guide shafts (311) are symmetrically welded at the middle positions of the upper half parts of the two long side walls of the cleaning water tank (31). The bottom end part of the U-shaped vertical frame (37) is slidably matched with the two vertical guide shafts (311). The U-shaped vertical frame (38) is slidably sleeved with the top half part of the cleaning water tank (31). The open end of the U-shaped vertical frame (38) is fixedly welded to the two vertical side rods of the U-shaped vertical frame (37).

3. A plastic granulator waste residue recycling device according to claim 1, characterized in that: Two U-shaped mounting grooves (364) are symmetrically formed at the two end parts of the rectangular holding frame (365). The two rectangular caulking plates (362) are slidably matched with the two U-shaped mounting grooves (364). Two limiting shafts (3621) are symmetrically welded on opposite sides of the two rectangular caulking plates (362), and four shaft holes (3651) are symmetrically opened at positions near the U-shaped mounting grooves (364) inside the two long side rods of the rectangular retaining frame (365), and the four limiting shafts (3621) are slidably matched with the four shaft holes (3651) in the form of spring push reset.

4. A plastic granulator waste residue recycling device according to claim 1, characterized in that: A row of the longitudinal railings (366) is welded to the inside of the rectangular holding frame (365), and a row of metal fences is covered and connected between the row of longitudinal railings (366) and in the intervals between the two longitudinal railings (366) at the outer sides and the two short side bars of the rectangular holding frame (365); When the rectangular screen fence (36) slides down into the lower space inside the cleaning water tank (31), the rectangular screen fence (36) is completely immersed in the cleaning water contained in the lower space of the cleaning water tank (31), and at this time, small particles of plastic waste residue made by crushing plastic waste residue are loaded into the cleaning water and carried on the top of the rectangular screen fence (36) for cleaning; When the rectangular screen (36) slides up to the middle space inside the cleaning water tank (31), the rectangular screen (36) and the cleaned plastic particles are separated from the cleaning water and dried; When the rectangular screen fence (36) slides up to the top opening of the cleaning water tank (31), the dried plastic particles are lifted into the top opening of the cleaning water tank (31) for unloading.

5. A plastic granulator waste residue recycling device according to claim 2, characterized in that: The two hydraulic cylinders (310) are fixed at the middle positions outside the two long side walls of the cleaning water tank (31); A conical dirt collecting cover (312) is welded to the bottom of the cleaning water tank (31), an L-shaped dirt discharge pipe (35) with a valve is welded to the center of the bottom of the dirt collecting cover (312), and a water injection pipe (34) with a valve is welded to one end of the bottom of a long side wall of the cleaning water tank (31).

6. A plastic granulator waste residue recycling device according to claim 1, characterized in that: Four vertical pillars (33) are symmetrically welded to the bottom of the cleaning water tank (31), a material receiving cover (32) with a conical structure is welded on the four vertical pillars (33), and a short material discharge pipe (321) is welded at the center of the bottom of the material receiving cover (32).

7. The device for recycling waste residue from a plastic granulator according to claim 1, characterized in that: It also includes a drying device (4), which is arranged above the cleaning device (3); The drying device (4) comprises a trapezoidal air distribution hood (41) and an electric hot air blower (42). The top of the trapezoidal air distribution hood (41) is symmetrically fixed with two air outlets of the electric hot air blower (42) connected thereto. Four vertical support rods (43) are symmetrically welded between the trapezoidal air distribution hood (41) and the cleaning water tank (31).

8. The device for recycling waste residue from a plastic granulator according to claim 1, characterized in that: The invention comprises a waste residue pretreatment device, a crushing device, a melting granulation device, a quality inspection device and a packaging and storage device. The above devices are arranged in sequence according to the process flow and connected by a screw conveyor. The connection sequence is: waste residue pretreatment device, crushing device, cleaning device (3), drying device (4), melting granulation device quality inspection device, packaging and storage device.

9. A plastic granulator waste residue recycling process, applied to the recycling device described in any one of claims 1 to 8, characterized in that: The steps include: ①, the plastic waste residue generated during the production of the plastic granulator is collected and classified according to different types of plastics and sent to the plastic waste residue pretreatment device (1), and large impurities such as metal pieces, stones, wood chips, etc. in the waste residue are removed; ②, sending the plastic waste residue after impurity removal treatment to the crushing device (2), and crushing it into smaller particles by the crushing device (2); ③, sending the small particles of plastic waste formed after crushing into the cleaning water tank (31) of the cleaning device (3), adding an appropriate amount of cleaning water and surfactant into the cleaning water tank (31), and cleaning the small particles of plastic waste to remove oil, dust and other pollutants on the surface of the plastic waste; ④. The small particles of plastic waste after cleaning are lifted out of the cleaning water and then dried by a drying device (4). The drying temperature and time are adjusted according to the type and characteristics of the plastic, and the drying temperature is controlled between 50°C and 100°C; ⑤. The dried small-particle plastic waste residue is transported to a melting granulation device (5) for melting and re-granulation to obtain recycled plastic particles; ⑥, transporting the recycled plastic particles to the quality inspection device (6), and inspecting the appearance, size, density, melting point, mechanical properties and other indicators of the particles; 7. The recycled plastic particles of qualified quality are transported to the packaging and storage device (7) for bagging or temporary storage.

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