Plastic leftover material crushing and recycling equipment and recycling method thereof

Abstract

The invention relates to the technical field of plastic leftover material recycling, in particular to plastic leftover material smashing and recycling equipment and a recycling method thereof. According to the technical scheme, a liquid outlet box is provided with a liquid outlet pipe and a sensor. And the upper blade and the lower blade are respectively provided with an upper transmission gear and a lower transmission gear, are inserted into the limiting sleeve through a connecting rod and are meshed with the planetary gear, so that reverse rotation is realized. The plastic is crushed by the blades in the blocking net and is further crushed by utilizing a cavitation phenomenon, and the crushed plastic is in full contact with the medicament in the recovery reaction box. The equipment realizes effective crushing and recovery of plastic leftover materials. The multi-crushing-module connecting rod transmission is adopted, and synchronous work is achieved. The upper blade and the lower blade rotate reversely to enhance shearing force and cavitation, and the crushing effect is improved. The chemical concentration is monitored in real time through the sensor, the throttling valve is automatically closed to avoid waste and pollution, and the liquid inlet box supplements new chemicals to keep the concentration stable.

Description

Technical Field

[0001] The invention relates to the technical field of plastic scrap recycling, and in particular to a plastic scrap crushing and recycling device and a recycling method thereof. Background Art

[0002] A plastic mold is the abbreviation of a combined mold used for compression molding, extrusion molding, injection molding, blow molding and low-foaming molding. At the same time, the coordinated changes of the mold convex and concave molds and the auxiliary molding system can process a series of plastic parts of different shapes and sizes. When the plastic mold is separated after injection molding, there will be scraps left on the surface of the mold after injection molding. At present, these scraps are manually collected and crushed to form particles, and then they are recycled and injected.

[0003] After searching, the patent with patent announcement number CN202210132559.4 discloses a plastic scrap crushing and recycling device after the use of plastic molds. Although the device is used by setting a crushing mechanism, multiple cross bars rotate so that the permanent magnet plate will continuously pass over the permanent magnet block, and then the induction current is intermittently generated on the induction wire frame, and then the conductive spring is intermittently contracted and extended, thereby driving multiple crushing knives to move up and down, so that when the scraps are crushed, the scraps are constantly shaken up and down to avoid blind spots when the scraps are crushed, resulting in a decrease in the crushing quality of the scraps and affecting the efficiency of its recycling. However, when the device is in use, the plastic is only crushed by the crushing knife. After the crushing, the plastic needs to be recycled through other steps, which increases the complexity and time cost of the processing flow. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a plastic scrap crushing and recycling device and a recycling method thereof, which solve the problems raised in the background technology.

[0005] The solution of the present invention to solve the above technical problems is as follows: A plastic scrap crushing and recycling device comprises a crushing box, wherein the crushing box is provided with a blocking net, a top cover is installed on the top of the blocking net, a motor is installed on the top cover, a gearbox is installed on the output end of the motor, a crushing module is installed below the top cover, and the motor is connected to the crushing module through the gearbox, and the crushing modules are provided with a plurality of them, and the plurality of crushing modules are connected through connecting rods. The crushing box is plugged and installed on the recovery reaction box, the top of the crushing box is provided with a boss, the crushing box is limitedly plugged on the recovery reaction box through the boss of the boss, the two ends of the recovery reaction box are connected with a liquid outlet box and a liquid inlet box through a conduit, a throttle valve and a one-way valve are connected to the conduit between the liquid outlet box and the liquid inlet box, the liquid outlet box is provided with a liquid outlet pipe, a sensor is provided on the liquid outlet box above the liquid outlet pipe, and the liquid inlet box is provided with a liquid inlet pipe; The crushing module is provided with a retaining frame, a supporting rod is installed on the inner side of the retaining frame, and the retaining frame is connected with a hoop through the supporting rod, a planetary gear is rotatably installed on the inner side of the hoop, and a limiting sleeve is provided on the inner side of the hoop, and the crushing module is rotatably installed with an upper blade and a lower blade at both ends of the limiting sleeve, and an upper transmission gear and a lower transmission gear are respectively provided on the upper blade and the lower blade, and a connecting rod is provided on the upper transmission gear and the lower transmission gear, and the upper transmission gear and the lower transmission gear are inserted in the limiting sleeve through the connecting rod, and the upper blade and the lower blade are meshed with the planetary gear through the upper transmission gear and the lower transmission gear. When the upper blade rotates, the upper blade drives the lower blade to rotate in the opposite direction through the planetary gear. While the plastic in the blocking net is crushed by the upper blade and the lower blade, it is further crushed by the cavitation phenomenon generated when the upper blade and the lower blade rotate. While the plastic in the crushing box is crushed by the crushing module, the crushed plastic is fully in contact with the reagent in the recovery reaction box.

[0006] Based on the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the throttle valve is provided with a connecting pipe, the throttle valve is connected with the conduit through the connecting pipe, a driving gear is rotatably installed on the throttle valve, a fixing frame is mounted on the throttle valve, a rack is provided on one side of the fixing frame, a valve plate is provided on the fixing frame, the fixing frame engages the rack through the driving gear, and then drives the valve plate to be inserted into the connecting pipe for throttling.

[0008] The beneficial effects of adopting the above further scheme are: By meshing the drive gear with the rack, the position of the valve plate in the connecting pipe can be accurately controlled, thereby achieving accurate regulation of the flow of the agent. The design of the throttle valve not only automates the flow control process, reducing the reliance on manual adjustment, but also improves the operating efficiency and automation level of the equipment. In addition, the throttle valve has a reasonable structural design, and the valve plate and drive mechanism are easy to disassemble and clean, which greatly facilitates the daily maintenance of the equipment and ensures the long-term stable operation of the equipment.

[0009] Furthermore, the conduits connecting the recovery reaction box with the liquid outlet box and the liquid inlet box are diagonally distributed on both sides of the recovery reaction box, and the height between the liquid outlet box and the recovery reaction box is located at the upper end of the recovery reaction box.

[0010] The beneficial effects of adopting the above further scheme are: This diagonal distribution design is conducive to the uniform flow of the agent between the recovery reaction box, the liquid outlet box and the liquid inlet box, avoiding excessive accumulation of the agent in a certain area or poor flow. At the same time, the height setting between the liquid outlet box and the recovery reaction box helps to promote the natural flow of the agent and improve the efficiency of the agent circulation. This design optimizes the circulation path of the agent, allowing the agent to more fully contact with the plastic particles and undergo a dissolution reaction.

[0011] Furthermore, the upper blade and the lower blade are respectively mounted on the connecting seats at both ends of the crushing module, and the ends of the upper blade and the lower blade are locked and mounted on the connecting seats by means of an insert rod and a nut.

[0012] The beneficial effects of adopting the above further scheme are: This installation method makes it easier to replace and repair the upper and lower blades. When the blade is worn or damaged, just loosen the nut and you can easily remove the blade for replacement or repair. At the same time, the locking method of the rod and nut ensures the stability of the blade on the connection seat, preventing the blade from loosening or falling off during operation, thereby ensuring the working efficiency and safety of the crushing module.

[0013] Furthermore, the crushing module is provided with a shaft sleeve, and the upper transmission gear, the lower transmission gear and the planetary gear are located in the shaft sleeve.

[0014] The beneficial effects of adopting the above further scheme are: The design of the shaft sleeve provides good protection and support for the transmission gear, reducing the wear and noise of the gear during operation. At the same time, placing the transmission gear in the shaft sleeve makes the structure of the entire crushing module more compact and stable. This design not only improves the working efficiency and life of the crushing module, but also reduces the maintenance cost of the equipment.

[0015] Furthermore, the lower blade of the crushing module is connected to the upper blade of another group of crushing modules through a connecting rod transmission, and then multiple groups of crushing modules are connected through the connecting rod transmission.

[0016] The beneficial effects of adopting the above further scheme are: This connecting rod transmission connection method enables multiple groups of crushing modules to work together to complete the crushing task of plastic scraps. By adjusting the length and angle of the connecting rod, the working state of the crushing module can be accurately controlled to meet the crushing needs of plastic scraps of different sizes and shapes. In addition, the connecting rod transmission method also has the advantages of simple structure and easy maintenance.

[0017] Furthermore, the recovery reaction box is filled with a medicine for dissolving plastic, and the liquid outlet box and the liquid inlet box are built with a circulation pump, and the medicine in the recovery reaction box circulates in the liquid outlet box, the liquid inlet box and the recovery reaction box through the circulation pump.

[0018] The beneficial effects of adopting the above further scheme are: The circulation of the reagent not only accelerates the dissolution process, allowing the plastic particles to more fully contact the reagent and undergo a dissolution reaction, but also improves the utilization rate of the reagent. Through the action of the circulation pump, the reagent can continuously circulate between the recovery reaction box, the liquid outlet box and the liquid inlet box, thereby ensuring the uniformity and stability of the reagent concentration. This design optimizes the use of the reagent and reduces production costs.

[0019] Furthermore, through holes are evenly opened on the blocking net, and the reagents in the recovery reaction box pass through the through holes of the blocking net and come into contact with the plastic particles in the blocking net.

[0020] The beneficial effects of adopting the above further scheme are: The through-hole design on the screen allows the reagent to pass smoothly and contact the plastic particles in the screen. This contact method not only improves the dissolution efficiency, but also ensures that the reagent and the plastic particles are fully mixed. At the same time, the size and distribution of the through-holes can be adjusted according to actual needs to meet the dissolution needs of plastic particles of different sizes and shapes.

[0021] Furthermore, the sensor is used to detect the plastic content in the medicine in the liquid outlet box. When the plastic content in the medicine in the liquid outlet box reaches saturation, the throttle valve closes to allow the saturated medicine in the liquid outlet box to flow out from the liquid outlet pipe. At the same time, the liquid inlet box replenishes the medicine through the liquid inlet pipe until the plastic content in the medicine in the liquid outlet box is below the set standard range.

[0022] The beneficial effects of adopting the above further scheme are: The real-time monitoring function of the sensor ensures the accurate control of the plastic content in the reagent in the liquid outlet box. When the plastic content reaches saturation, the timely closure of the throttle valve avoids the continued inflow and waste of saturated reagents. At the same time, the timely replenishment of the liquid inlet box ensures the stability of the reagent concentration in the recovery reaction box. This control method not only improves the automation level of the equipment, but also optimizes the use efficiency of the reagents and reduces production costs.

[0023] A recycling method of a plastic scrap crushing and recycling device comprises the following steps: S1, preparation stage: Pour an appropriate amount of agent for dissolving plastic into the recovery reaction box; ensure that the circulating pumps in the outlet tank and the inlet tank are in working condition so that the agent can circulate between the three; open the throttle valve and the one-way valve to ensure smooth flow of the agent; S2, feeding stage: put the plastic scraps to be recycled into the screen of the crushing box; start the motor and drive the crushing module through the gearbox to start working; S3, crushing and dissolving stage: the upper blade and the lower blade of the crushing module start to rotate, and the plastic scraps are crushed by the shear force and cavitation phenomenon between the blades; while crushing, the reagent in the recovery reaction box enters the recovery reaction box through the through hole of the barrier net, and fully contacts and dissolves with the crushed plastic scraps; during the dissolving process, the reagent is continuously circulated between the liquid outlet box, the liquid inlet box and the recovery reaction box through the circulation pump to accelerate the dissolving process; S4, monitoring and adjustment stage: the sensor monitors the plastic content in the reagent in the liquid outlet tank in real time; when the plastic content reaches saturation, the throttle valve automatically closes, allowing the saturated reagent in the liquid outlet tank to flow out from the liquid outlet pipe; at the same time, the liquid inlet tank replenishes new reagents through the liquid inlet pipe to maintain the reagent concentration in the recovery reaction box; repeat this process until all plastic scraps are completely dissolved; S5, recovery and treatment stage: The reagent containing dissolved plastic flowing out from the liquid outlet pipe is collected for further treatment, such as precipitation, filtration, drying, etc., to recover pure plastic particles; the treated reagent can be recycled or properly disposed of in accordance with environmental protection requirements.

[0024] The present invention provides a plastic scrap crushing and recycling device and a recycling method thereof, which has the following beneficial effects: The equipment uses multiple crushing modules, which are connected by connecting rod transmission to achieve synchronous operation, greatly improving the crushing efficiency. The crushing module adopts the transmission mode of upper and lower blades with planetary gears to achieve reverse rotation of the blades, enhance shear force and cavitation, and further improve the crushing effect. The reagents in the recycling reaction box are continuously circulated through the circulation pump, which accelerates the dissolution process of plastic scraps.

[0025] The equipment is equipped with sensors to monitor the plastic content in the reagent in the liquid outlet tank in real time to ensure that the reagent concentration remains at the optimal state. The throttle valve is automatically closed by driving the gear and rack. When the plastic content reaches saturation, the flow of reagent is automatically cut off to avoid waste and pollution. The liquid inlet tank can be replenished with new reagents in time to maintain a stable reagent concentration in the recovery reaction box.

[0026] The crushing box is plugged into the recovery reaction box through the boss limit of the barrier, with a compact structure and easy installation and removal. The crushing module adopts modular design, which is easy to replace and repair. The reagent circulation system and throttle valve and other components are reasonably designed to facilitate daily maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0028] In the attached picture: Figure 1 It is a schematic diagram of the main appearance of the present invention; Figure 2 It is a rear view schematic diagram of the present invention; Figure 3 It is a schematic diagram of the appearance of the throttle valve of the present invention; Figure 4 This is a schematic diagram of the appearance of the crushing box of the present invention; Figure 5 It is a schematic diagram of the appearance of the top cover of the present invention; Figure 6 This is a schematic diagram of the main explosion structure of the crushing module of the present invention; Figure 7 It is a schematic diagram of the explosion structure of the crushing module of the present invention when viewed from above.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Liquid outlet box; 101. Sensor; 102. Liquid outlet pipe; 2. Conduit; 3. Liquid inlet box; 301. Liquid inlet pipe; 4. Throttle valve; 401. Rack; 402. Drive gear; 403. Connecting pipe; 404. Valve plate; 405. Fixing bracket; 5. Check valve; 6. Crushing box; 601. Gearbox; 602. Top cover; 603. Blocking net; 604. Motor; 7. Recovery reaction box; 8. Crushing module; 801. Upper blade; 8010. Connecting seat; 8011. Upper transmission gear; 802. Retaining frame; 803. Lower blade; 804. Lower transmission gear; 805. Connecting rod; 806. Support rod; 807. Planetary gear; 808. Hoop; 809. Limit sleeve; 9. Connecting rod. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 7 As shown, the embodiments provided by the present invention are: Embodiment 1 A plastic scrap crushing and recycling device includes a crushing box 6, which is provided with a screen 603, and the screen 603 is evenly penetrated with through holes. The medicine in the recovery reaction box 7 passes through the through holes of the screen 603 and contacts with the plastic particles in the screen 603. The through holes on the screen 603 are designed so that the medicine can pass smoothly and contact with the plastic particles in the screen 603. This contact mode not only improves the dissolution efficiency, but also ensures the full mixing of the medicine and the plastic particles. At the same time, the size and distribution of the through holes can also be adjusted according to actual needs to meet the dissolution requirements of plastic particles of different sizes and shapes. A top cover 602 is installed on the top of the blocking net 603, and a motor 604 is installed on the top cover 602. A gearbox 601 is installed at the output end of the motor 604. A crushing module 8 is installed below the top cover 602, and the motor 604 is connected to the crushing module 8 through the gearbox 601. There are several crushing modules 8, and several crushing modules 8 are connected through the connecting rod 9. The lower blade 803 of the crushing module 8 is connected to the upper blade 801 of another group of crushing modules 8 through the connecting rod 9, and then multiple groups of crushing modules 8 are connected through the connecting rod 9. This connecting rod 9 transmission connection mode enables multiple groups of crushing modules 8 to work together and jointly complete the crushing task of plastic scraps. By adjusting the length and angle of the connecting rod 9, the working state of the crushing module 8 can be accurately controlled, thereby meeting the crushing requirements of plastic scraps of different sizes and shapes. In addition, the connecting rod 9 transmission mode also has the advantages of simple structure and easy maintenance.

[0032] Embodiment 2 In order to control the concentration of the reagent in the recovery reaction box 7, for example, Figures 1 to 5As shown, the present invention also includes: and a plurality of crushing boxes 6 are provided on the recovery reaction box 7, so as to facilitate replacement of the crushing boxes 6 that have been recovered at any time, a boss is provided on the top of the blocking net 603 of the crushing box 6, and the crushing box 6 is limitedly inserted into the recovery reaction box 7 through the boss of the blocking net 603, and the two ends of the recovery reaction box 7 are connected to the liquid outlet box 1 and the liquid inlet box 3 through the conduit 2, and the recovery reaction box 7 is filled with a medicine for dissolving plastic, and the liquid outlet box 1 and the liquid inlet box 3 are built with a circulation pump, and the medicine in the recovery reaction box 7 circulates in the liquid outlet box 1, the liquid inlet box 3 and the recovery reaction box 7 through the circulation pump, and the circulation of the medicine not only accelerates the dissolution process, so that the plastic particles can be more fully contacted with the medicine and dissolve, but also improves the utilization rate of the medicine. Through the action of the circulation pump, the medicine can circulate continuously between the recovery reaction box 7, the liquid outlet box 1 and the liquid inlet box 3, thereby ensuring the uniformity and stability of the concentration of the medicine. This design optimizes the use of the medicine and reduces the production cost. The conduits 2 connecting the recovery reaction box 7 with the liquid outlet box 1 and the liquid inlet box 3 are diagonally distributed on both sides of the recovery reaction box 7, and the height between the liquid outlet box 1 and the recovery reaction box 7 is located at the upper end of the recovery reaction box 7. This diagonal distribution design is conducive to the uniform flow of the medicine between the recovery reaction box 7, the liquid outlet box 1 and the liquid inlet box 3, avoiding excessive accumulation or poor flow of the medicine in a certain area. At the same time, the height setting between the liquid outlet box 1 and the recovery reaction box 7 helps to promote the natural flow of the medicine and improve the efficiency of the medicine circulation. This design optimizes the circulation path of the medicine, so that the medicine can contact with the plastic particles more fully and undergo a dissolution reaction. A throttle valve 4 and a one-way valve 5 are connected to the conduit 2 between the liquid outlet box 1 and the liquid inlet box 3. The throttle valve 4 is provided with a connecting pipe 403, and the throttle valve 4 is connected to the conduit 2 through the connecting pipe 403. A driving gear 402 is rotatably installed on the throttle valve 4. A fixing frame 405 is mounted on the throttle valve 4. A rack 401 is provided on one side of the fixing frame 405. A valve plate 404 is provided on the fixing frame 405. The fixing frame 405 engages the rack 401 through the driving gear 402, thereby driving the valve plate 404 to be inserted into the connecting pipe 403 for throttling. Through the engagement of the driving gear 402 with the rack 401, the position of the valve plate 404 in the connecting pipe 403 can be accurately controlled, thereby realizing accurate regulation of the flow rate of the medicine. The design of the throttle valve 4 not only enables the flow control process to be automated, reduces the reliance on manual adjustment, but also improves the operating efficiency and automation level of the equipment.In addition, the structure design of the throttle valve 4 is reasonable, and the valve plate 404 and the driving mechanism are easy to disassemble and clean, which greatly facilitates the daily maintenance and maintenance of the equipment and ensures the long-term stable operation of the equipment. The liquid outlet box 1 is provided with a liquid outlet pipe 102, and the liquid outlet box 1 is provided with a sensor 101 located above the liquid outlet pipe 102. The liquid inlet box 3 is provided with a liquid inlet pipe 301. The sensor 101 is used to detect the plastic content in the medicine in the liquid outlet box 1. When the plastic content in the medicine in the liquid outlet box 1 reaches saturation, the throttle valve 4 is closed, so that the saturated medicine in the liquid outlet box 1 flows out from the liquid outlet pipe 102, and the liquid inlet box 3 replenishes the medicine through the liquid inlet pipe 301 until the plastic content in the medicine in the liquid outlet box 1 is below the set standard range. The real-time monitoring function of the sensor 101 ensures the accurate control of the plastic content in the medicine in the liquid outlet box 1. When the plastic content reaches saturation, the timely closure of the throttle valve 4 avoids the continued inflow and waste of the saturated medicine. At the same time, the timely replenishment of the liquid inlet box 3 ensures the stability of the concentration of the reagent in the recovery reaction box 7. This control method not only improves the automation level of the equipment, but also optimizes the use efficiency of the reagent and reduces the production cost.

[0033] Embodiment 3 In order to ensure the crushing effect of plastic scraps, for example, Figures 1 to 7As shown, the present invention also includes: the crushing module 8 is provided with a retaining frame 802, a support rod 806 is installed on the inner side of the retaining frame 802, the retaining frame 802 is connected to a clamp 808 through the support rod 806, a planetary gear 807 is rotatably installed on the inner side of the clamp 808, and a limit sleeve 809 is provided on the inner side of the clamp 808, and the crushing module 8 is rotatably installed with an upper blade 801 and a lower blade 803 at both ends of the limit sleeve 809, and the upper blade 801 and the lower blade 803 are selected from a special material with high hardness, high fatigue resistance and good corrosion resistance. The material of the blade is made of quartz crystal to improve its ability to resist cavitation and erosion, and a protective coating is formed on the surface of the blade through laser modification, thermal spraying, surface nitriding, chemical plating and electroplating, etc., to further improve its cavitation resistance. The upper blade 801 and the lower blade 803 are respectively installed on the connecting seat 8010 at both ends of the crushing module 8, and the ends of the upper blade 801 and the lower blade 803 are locked and installed on the connecting seat 8010 through a plug rod and a nut. This installation method makes the replacement and maintenance of the upper blade 801 and the lower blade 803 easier. When the blade is worn or damaged, just loosen the nut to easily remove the blade 803 for replacement or maintenance. At the same time, the locking method of the plug rod and the nut ensures the stability of the blade on the connecting seat 8010, avoids the blade from loosening or falling off during the working process, thereby ensuring the working efficiency and safety of the crushing module 8, the upper blade 801 and the lower blade 803 are respectively provided with an upper transmission gear 8011 and a lower transmission gear 804, and the upper transmission gear 8011 and the lower transmission gear 804 are provided with a connecting rod 805, the upper transmission gear 8011 and the lower transmission gear 804 are plugged into the limit sleeve 809 through the connecting rod 805, the upper blade 801 and the lower blade 803 are meshed with the planetary gear 807 through the upper transmission gear 8011 and the lower transmission gear 804, the crushing module 8 is provided with a shaft sleeve, and the upper transmission gear 8011, the lower transmission gear 804 and the planetary gear 807 are located in the shaft sleeve, and the design of the shaft sleeve provides good protection and support for the transmission gear, reducing the wear and noise of the gear during the working process. At the same time, placing the transmission gear in the shaft sleeve makes the structure of the entire crushing module 8 more compact and stable. This design not only improves the working efficiency and life of the crushing module 8, but also reduces the maintenance cost of the equipment. When the upper blade 801 rotates, the upper blade 801 drives the lower blade 803 to rotate in the opposite direction through the planetary gear 807. The plastic in the blocking net 603 is crushed by the upper blade 801 and the lower blade 803, and is further crushed by the cavitation phenomenon generated when the upper blade 801 and the lower blade 803 rotate. The plastic in the crushing box 6 is crushed by the crushing module 8, and the crushed plastic is fully in contact with the reagent in the recovery reaction box 7.

[0034] Embodiment 4 A recycling method of a plastic scrap crushing and recycling device comprises the following steps: S1, preparation stage: pour an appropriate amount of agent for dissolving plastic into the recovery reaction box 7; ensure that the circulation pumps in the liquid outlet box 1 and the liquid inlet box 3 are in working state, so that the agent can circulate between the three; open the throttle valve 4 and the one-way valve 5 to ensure smooth flow of the agent; S2, feeding stage: the plastic scraps to be recycled are put into the screen 603 of the crushing box 6; the motor 604 is started, and the crushing module 8 is driven to start working through the gearbox 601; S3, crushing and dissolving stage: the upper blade 801 and the lower blade 803 of the crushing module 8 start to rotate, and the plastic scraps are crushed by the shear force and cavitation phenomenon between the blades; while crushing, the reagent in the recovery reaction box 7 enters the recovery reaction box 7 through the through hole of the interception net 603, and fully contacts and dissolves with the crushed plastic scraps; during the dissolving process, the reagent is continuously circulated between the liquid outlet box 1, the liquid inlet box 3 and the recovery reaction box 7 through the circulation pump to accelerate the dissolving process; S4, monitoring and adjustment stage: the sensor 101 monitors the plastic content in the agent in the liquid outlet box 1 in real time; when the plastic content reaches saturation, the throttle valve 4 automatically closes, allowing the saturated agent in the liquid outlet box 1 to flow out from the liquid outlet pipe 102; at the same time, the liquid inlet box 3 replenishes new agents through the liquid inlet pipe 301 to maintain the concentration of the agent in the recovery reaction box 7; repeat this process until all the plastic scraps are completely dissolved; S5, recovery and treatment stage: the medicine containing dissolved plastic flowing out from the liquid outlet pipe 102 is collected and further treated, such as precipitation, filtration, drying, etc., to recover pure plastic particles; the treated medicine can be recycled or properly disposed of in accordance with environmental protection requirements.

[0035] Working principle: The equipment mainly consists of a crushing box 6, a recovery reaction box 7, a liquid outlet box 1, a liquid inlet box 3, and related pipes, valves, and transmission devices. A screen 603 is provided in the crushing box 6, and through holes are evenly penetrated on the screen 603 to allow the medicine to pass through and contact the plastic particles. The crushing module 8 is driven by a motor 604, a gearbox 601, and a connecting rod 9 to crush the plastic scraps.

[0036] While crushing, the reagent in the recovery reaction box 7 enters the crushing box 6 through the through hole of the screen 603. The reagent fully contacts the crushed plastic scraps and dissolves. Through the action of the circulation pump, the reagent circulates continuously between the liquid outlet box 1, the liquid inlet box 3 and the recovery reaction box 7. This circulation not only accelerates the dissolution process, but also ensures full utilization of the reagent.

[0037] The plastic scraps are put into the screen 603 of the crushing box 6. The motor 604 is started to drive the crushing module 8 to work through the gearbox 601. The upper blade 801 and the lower blade 803 in the crushing module 8 start to rotate, and the plastic scraps are crushed by shear force and cavitation.

[0038] While crushing, the reagent in the recovery reaction box 7 enters the crushing box 6 through the through hole of the blocking net 603, fully contacts with the crushed plastic scraps and dissolves. The circulation of the reagent accelerates the dissolution process.

[0039] The sensor 101 monitors the plastic content in the medicine in the liquid outlet box 1 in real time. When the plastic content reaches saturation, the throttle valve 4 automatically closes to prevent more medicine from flowing into the liquid outlet box 1. At the same time, the saturated medicine in the liquid outlet box 1 flows out from the liquid outlet pipe 102. The liquid inlet box 3 replenishes new medicine in time through the liquid inlet pipe 301 to keep the concentration of the medicine in the recovery reaction box 7 within a suitable range.

[0040] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A plastic scrap crushing and recycling device, comprising a crushing box (6), the crushing box (6) being provided with a screen (603), a top cover (602) being installed on the top of the screen (603), a motor (604) being installed on the top cover (602), a gearbox (601) being installed on the output end of the motor (604), a crushing module (8) being installed below the top cover (602), and the motor (604) being transmission-connected to the crushing module (8) via the gearbox (601), a plurality of crushing modules (8) being provided, and the plurality of crushing modules (8) being transmission-connected via a connecting rod (9), characterized in that: The crushing box (6) is plugged and installed on the recovery reaction box (7); a boss is provided on the top of the blocking net (603) of the crushing box (6); the crushing box (6) is plugged and connected to the recovery reaction box (7) through the boss of the blocking net (603); the two ends of the recovery reaction box (7) are connected to the liquid outlet box (1) and the liquid inlet box (3) through the conduit (2); a throttle valve (4) and a one-way valve (5) are connected to the conduit (2) between the liquid outlet box (1) and the liquid inlet box (3); the liquid outlet box (1) is provided with a liquid outlet pipe (102); a sensor (101) is provided on the liquid outlet box (1) above the liquid outlet pipe (102); and the liquid inlet box (3) is provided with a liquid inlet pipe (301); The crushing module (8) is provided with a retaining frame (802), a support rod (806) is installed on the inner side of the retaining frame (802), the retaining frame (802) is connected to a clamp (808) via the support rod (806), a planetary gear (807) is rotatably installed on the inner side of the clamp (808), and a limit sleeve (809) is provided on the inner side of the clamp (808), an upper blade (801) and a lower blade (803) are rotatably installed at both ends of the limit sleeve (809) of the crushing module (8), an upper transmission gear (8011) and a lower transmission gear (804) are respectively provided on the upper blade (801) and the lower blade (803), and a connecting rod (805) is provided on the upper transmission gear (8011) and the lower transmission gear (804), and the upper transmission gear (8011) and the lower transmission gear (804) are connected to each other. ) and the lower transmission gear (804) are inserted into the limit sleeve (809) through the connecting rod (805), and the upper blade (801) and the lower blade (803) are meshed with the planetary gear (807) through the upper transmission gear (8011) and the lower transmission gear (804). When the upper blade (801) rotates, the upper blade (801) drives the lower blade (803) to rotate in the opposite direction through the planetary gear (807). The plastic in the blocking net (603) is crushed by the upper blade (801) and the lower blade (803), and is further crushed by the cavitation phenomenon generated when the upper blade (801) and the lower blade (803) rotate. When the plastic in the crushing box (6) is crushed by the crushing module (8), the crushed plastic is fully contacted with the medicine in the recovery reaction box (7).

2. The plastic scrap crushing and recycling equipment according to claim 1, characterized in that: The throttle valve (4) is provided with a connecting pipe (403), and the throttle valve (4) is connected to the conduit (2) through the connecting pipe (403). A driving gear (402) is rotatably mounted on the throttle valve (4). A fixing frame (405) is mounted on the throttle valve (4), and a rack (401) is provided on one side of the fixing frame (405). A valve plate (404) is provided on the fixing frame (405). The fixing frame (405) engages the rack (401) through the driving gear (402), thereby driving the valve plate (404) to be inserted into the connecting pipe (403) for throttling.

3. The plastic scrap crushing and recycling equipment according to claim 1 is characterized in that: The conduits (2) connecting the recovery reaction box (7) with the liquid outlet box (1) and the liquid inlet box (3) are diagonally distributed on both sides of the recovery reaction box (7), and the height between the liquid outlet box (1) and the recovery reaction box (7) is located at the upper end of the recovery reaction box (7).

4. The plastic scrap crushing and recycling equipment according to claim 1, characterized in that: The upper blade (801) and the lower blade (803) are respectively mounted on the connecting seats (8010) at both ends of the crushing module (8), and the ends of the upper blade (801) and the lower blade (803) are mounted on the connecting seats (8010) by means of a plug rod and a nut for locking.

5. The plastic scrap crushing and recycling equipment according to claim 1, characterized in that: The crushing module (8) is provided with a shaft sleeve, and the upper transmission gear (8011), the lower transmission gear (804) and the planetary gear (807) are located inside the shaft sleeve.

6. The plastic scrap crushing and recycling equipment according to claim 1, characterized in that: The lower blade (803) of the crushing module (8) is connected to the upper blade (801) of another group of crushing modules (8) through a connecting rod (9), thereby connecting multiple groups of crushing modules (8) through the connecting rod (9).

7. The plastic scrap crushing and recycling equipment according to claim 1, characterized in that: The recovery reaction box (7) is filled with a medicine for dissolving plastic, and the liquid outlet box (1) and the liquid inlet box (3) are built with a circulation pump, and the medicine in the recovery reaction box (7) circulates in the liquid outlet box (1), the liquid inlet box (3) and the recovery reaction box (7) through the circulation pump.

8. The plastic scrap crushing and recycling equipment according to claim 1, characterized in that: The blocking net (603) is evenly penetrated with through holes, and the medicine in the recovery reaction box (7) passes through the through holes of the blocking net (603) and contacts the plastic particles in the blocking net (603).

9. The plastic scrap crushing and recycling equipment according to claim 1, characterized in that: The sensor (101) is used to detect the plastic content in the medicine in the liquid outlet box (1). When the plastic content in the medicine in the liquid outlet box (1) reaches saturation, the throttle valve (4) closes, allowing the saturated medicine in the liquid outlet box (1) to flow out from the liquid outlet pipe (102). At the same time, the liquid inlet box (3) replenishes the medicine through the liquid inlet pipe (301) until the plastic content in the medicine in the liquid outlet box (1) is below a set standard range.

10. A recycling method for plastic scrap crushing and recycling equipment as claimed in claim 1, characterized in that: The following steps are involved: S1, preparation stage: pouring an appropriate amount of a reagent for dissolving plastic into the recovery reaction box (7); Ensure that the circulation pumps in the liquid outlet tank (1) and the liquid inlet tank (3) are in working condition so that the medicine can circulate between the three; Open the throttle valve (4) and the one-way valve (5) to ensure smooth flow of the medicine; S2, feeding stage: the plastic scraps to be recycled are put into the screen (603) of the crushing box (6); the motor (604) is started to drive the crushing module (8) through the gearbox (601) to start working; S3, crushing and dissolving stage: the upper blade (801) and the lower blade (803) of the crushing module (8) start to rotate, and the plastic scraps are crushed by utilizing the shear force and cavitation phenomenon between the blades; while crushing, the reagent in the recovery reaction box (7) enters the recovery reaction box (7) through the through hole of the blocking net (603), and fully contacts and dissolves the crushed plastic scraps; during the dissolving process, the reagent is continuously circulated between the liquid outlet box (1), the liquid inlet box (3) and the recovery reaction box (7) through the circulation pump to accelerate the dissolving process; S4, monitoring and adjustment stage: the sensor (101) monitors the plastic content in the reagent in the liquid outlet box (1) in real time; when the plastic content reaches saturation, the throttle valve (4) automatically closes, allowing the saturated reagent in the liquid outlet box (1) to flow out from the liquid outlet pipe (102); at the same time, the liquid inlet box (3) replenishes new reagent through the liquid inlet pipe (301) to maintain the reagent concentration in the recovery reaction box (7); repeat this process until all plastic scraps are completely dissolved; S5, recovery and treatment stage: the reagent containing dissolved plastic flowing out from the liquid outlet pipe (102) is collected and further treated, such as precipitation, filtration, drying, etc., to recover pure plastic particles; the treated reagent can be recycled or properly disposed of in accordance with environmental protection requirements.

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