A production and processing technology for recycling and reprocessing waste epoxy resin

Abstract

The invention discloses a production and processing technology for recycling and reprocessing waste epoxy resin, belongs to the technical field of epoxy resin recycling and processing, and comprises the following steps: cleaning a plurality of waste decorative plates of fixed size with epoxy resin attached to the surface, and drying the cleaned decorative plates; conveying the plurality of cleaned and dried decorative plates through a conveying mechanism; scraping glue one by one on the decorative plates conveyed in sequence through a hot air scraping mechanism; collecting scraped epoxy resin waste, putting the collected epoxy resin waste into a 4mol / L nitric acid solution, and then soaking it in a constant temperature water bath at 80°C for a certain time, and then adding ethyl acetate to the solution, filtering to remove filter residue after a certain time, and then washing with a sodium carbonate solution to neutrality, and removing ethyl acetate after distillation to obtain an epoxy resin finished product. The invention facilitates scraping of epoxy resin waste on decorative plates of fixed size, and accelerates the recycling and processing efficiency of epoxy resin on waste decorative plates.

Description

Technical Field

[0001] The invention relates to the technical field of epoxy resin recycling and treatment, in particular to a production and processing technology for recycling and reprocessing waste epoxy resin. Background Art

[0002] Epoxy resin refers to organic polymer compounds containing two or more epoxy groups in the molecule. Except for a few, their relative molecular mass is not high. The molecular structure of epoxy resin is characterized by the presence of active epoxy groups in the molecular chain. The epoxy groups can be located at the end, in the middle or in a ring structure of the molecular chain. Due to the presence of active epoxy groups in the molecular structure, they can undergo cross-linking reactions with various types of curing agents to form insoluble, infusible polymers with a three-dimensional network structure.

[0003] The cured epoxy resin has good physical and chemical properties. It has excellent bonding strength to the surfaces of metal and non-metal materials, good dielectric properties, small set shrinkage, good dimensional stability of the product, high hardness, good flexibility, and is stable to alkali and most solvents.

[0004] In the field of construction, epoxy resin can be used for floor coatings, engineering adhesives, wall decoration, etc. Epoxy resin coatings are rich in color, high in gloss, strong in hardness, and have good scratch resistance, chemical resistance, and wear resistance. At the same time, epoxy resin coatings also have excellent mildew and antibacterial functions. Epoxy resin coatings are applied on the front and around the decorative panels. After the decorative panels are used for a long time, the surface solidified waste epoxy resin is difficult to remove, which is not convenient for subsequent recycling of epoxy resin. In the removal of waste epoxy resin on traditional decorative panels, the waste decorative panels are generally crushed and then the epoxy resin is dissolved or softened with chemicals. In this method, the crushed waste decorative panels and the epoxy resin on the decorative panels will react together in the chemicals, and the chemicals will react differently to the waste decorative panels and different types of epoxy resins. A large number of crushed waste decorative panels react with the chemicals for a long time, and it is not convenient to separate the materials produced after the reaction of a large number of waste decorative panels in the mixed solvent and the recycling efficiency of the epoxy resin. Therefore, it is very necessary to design a production and processing technology for recycling and reprocessing waste epoxy resin. Summary of the invention

[0005] The purpose of the present invention is to provide a production and processing technology for recycling and reprocessing waste epoxy resin to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a production and processing technology for recycling and reprocessing waste epoxy resin, comprising the following steps:

[0007] S1: cleaning a number of waste decorative panels with epoxy resin on their surfaces, removing impurities on the surfaces of the decorative panels, and drying the cleaned decorative panels. During cleaning, the front side of the decorative panels faces upward;

[0008] S2: grab several cleaned and dried decorative panels onto a conveying mechanism through a manipulator, position and convey the decorative panels through the conveying mechanism, and convey the cleaned and dried decorative panels through a conveyor belt. The manipulator is arranged above the discharge end of the conveyor belt, and correction cylinders for correcting the deflection of the decorative panels placed on the conveyor belt are arranged on both sides of the discharge end of the conveyor belt. The output end of the correction cylinder is connected to a correction plate. The two correction cylinders push the two correction plates to move, and correct the deflection of the decorative panels on the conveyor belt so that the decorative panels are centered.

[0009] The conveying mechanism comprises a conveying track, a plurality of placement seats are arranged at equal intervals on the conveying track, a bearing suction plate for sucking the decorative panel is arranged on the placement seat, a plurality of suction holes are opened on the bearing suction plate, the suction holes are connected to the vacuum generator through a connecting pipe, and a sealing strip is arranged around a side of the bearing suction plate facing the decorative panel;

[0010] A machine case is provided below the conveying track, a collecting box is provided on the top of the machine case located outside the conveying track, and a collecting chamber is provided on the collecting box located below the conveying track;

[0011] S3: The decorative panels conveyed in sequence are scraped one by one by a hot air scraping mechanism, and the epoxy resin waste on the front and surrounding of the decorative panels is softened by hot air and then scraped off;

[0012] The hot air scraping mechanism comprises a hot air scraping box, the conveying track runs through the lower part of the hot air scraping box, the hot air scraping box is divided into a hot air chamber near the feeding end of the conveying track and a scraping chamber near the discharging end of the conveying track by a partition, and a hot air mechanism for hot air softening the decorative board conveyed by the conveying track is arranged in the hot air chamber;

[0013] A scraping channel for the decorative panel to pass through is provided at the lower part of the partition, and a detachable scraper for scraping off the epoxy resin waste on the front side of the decorative panel is provided at one end of the scraping channel facing the hot air chamber;

[0014] A suction box is provided in the hot air chamber at one side of the detachable scraper, a suction cavity is provided in the suction box, a suction mechanism is provided in the suction cavity, a feeding port connected to the suction cavity is provided on the side of the suction box facing the detachable scraper, and the suction cavity is connected to the collection chamber;

[0015] The scraping chamber is provided with a scraping mechanism for scraping off the epoxy resin waste around the decorative panel;

[0016] S4: Collect the scraped epoxy resin waste, put it into a 4 mol / L nitric acid solution, and then soak it in a constant temperature water bath at 80°C for a certain period of time, then add ethyl acetate to the solution, filter to remove the filter residue after a certain period of time, then wash with sodium carbonate solution until neutral, remove ethyl acetate after distillation, and obtain the epoxy resin finished product.

[0017] In a further embodiment, the hot air mechanism comprises a blast hood arranged in the hot air chamber, a blower is arranged in the blast hood, and an electric heating pipe is arranged at the air outlet end of the blower.

[0018] In a further embodiment, the scraping mechanism includes two slide cylinders arranged in the scraping chamber, the output ends of the two slide cylinders are connected to the connecting frame, and a detachable scraping frame for scraping off the epoxy resin waste around the decorative panel is fixed at the bottom of the connecting frame.

[0019] In a further embodiment, a detachable base cooperating with a detachable scraper frame is provided on the placement seat at the outer side of the bearing suction plate, and a collecting trough is provided on the placement seat at the outer side of the bearing suction plate.

[0020] In a further embodiment, the suction mechanism includes a negative pressure fan arranged in the suction chamber at one end away from the feed port, a material blocking filter is provided on the side of the air outlet end of the negative pressure fan facing the feed port, a first material guide inclined plate is provided at the bottom of the suction box located at the bottom of the feed port, a second material guide inclined plate is provided at the bottom of the material blocking filter, and a discharge port connected to the collection chamber is formed between the first material guide inclined plate and the second material guide inclined plate.

[0021] In a further embodiment, a pressure sensor is provided on the detachable base.

[0022] In a further embodiment, a feed cover connected to a hot air chamber is provided on the hot air scraper box toward the feed end of the conveying track, and a discharge cover connected to the scraper chamber is provided on the hot air scraper box toward the discharge end of the conveying track.

[0023] In a further embodiment, a collecting drawer is provided on the collecting box at the collecting chamber, and a handle is provided on the collecting drawer.

[0024] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0025] 1. Grab several cleaned and dried decorative panels of the same size onto the carrying suction plate on the conveying track by a manipulator, connect them to the vacuum generator through a connecting pipe, and evacuate air so that the carrying suction plate firmly sucks the back of the decorative panel. The firmly sucked decorative panel enters the hot air chamber, and the blower is used to blow air. The electric heating pipe heats the air to form hot air, and the epoxy resin waste on the front and surrounding of the decorative panel in the hot air chamber is softened by hot air. The decorative panel enters the scraping chamber through the scraping channel, and the softened epoxy resin waste on the front of the decorative panel is scraped off by a detachable scraper. When the decorative panel moves to the bottom of the detachable scraping frame, the connecting frame is driven to move by the slide cylinder, and then the detachable scraping frame is driven to scrape off the epoxy resin waste around the decorative panel. Compared with the recycling of epoxy resin on waste decorative panels by chemical substances, the present invention does not need to separate the materials generated after the reaction of a large number of broken waste decorative panels with chemical substances, thereby accelerating the subsequent recycling efficiency of epoxy resin.

[0026] 2. Through the operation of the negative pressure fan, air is exhausted, and the epoxy resin waste scraped by the detachable scraper is sucked into the suction cavity through the feed port, and then falls into the collection chamber. When the conveying track transports the upper placement seat to the bottom in sequence, the epoxy resin waste falling into the collecting trough falls into the collection chamber of the collection box, which is convenient for the collection of epoxy resin waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a process flow chart of the present invention;

[0028] Figure 2 It is a schematic diagram of the installation structure of the conveying mechanism and the hot air scraping mechanism of the present invention;

[0029] Figure 3 is a partial cross-sectional view of the hot air scraping mechanism of the present invention;

[0030] Figure 4 is a top view of the conveying track of the present invention;

[0031] Figure 5 It is a schematic diagram of the suction box structure of the present invention;

[0032] The accompanying drawings are marked as follows: chassis 1, hot air scraper box 2, conveying track 3, feed hood 4, discharge hood 5, placement seat 6, load-bearing suction plate 7, suction hole 8, sealing strip 9, collection box 10, detachable base 11, pressure sensor 12, collection trough 13, partition 14, hot air chamber 15, scraper chamber 16, blower hood 17, blower 18, electric heating pipe 19, scraper channel 20, detachable scraper 21, slide cylinder 22, connecting frame 23, detachable scraper frame 24, suction box 25, suction cavity 26, feed port 27, negative pressure fan 28, material blocking filter 29, first material guide inclined plate 30, second material guide inclined plate 31, discharge port 32. DETAILED DESCRIPTION

[0033] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0034] See also Figure 1-Figure 5 The present invention provides a technical solution: a production and processing technology for recycling and reprocessing waste epoxy resin, comprising the following steps:

[0035] S1: cleaning a number of waste decorative panels with epoxy resin on their surfaces, removing impurities on the surfaces of the decorative panels, and drying the cleaned decorative panels. During cleaning, the front side of the decorative panels faces upwards to facilitate scraping off the epoxy resin waste on the front side of the decorative panels;

[0036] S2: grabbing a number of cleaned and dried decorative panels onto a conveying mechanism through a robot arm, and positioning and conveying the decorative panels through the conveying mechanism;

[0037] The cleaned and dried decorative panels are transported by a conveyor belt, and a manipulator is arranged above the discharging end of the conveyor belt. Correction cylinders for correcting the decorative panels placed on the conveyor belt are arranged on both sides of the discharging end of the conveyor belt, and the output ends of the correction cylinders are connected to the correction plates, and the two correction cylinders push the two correction plates to move, so as to correct the deflection of the decorative panels on the conveyor belt, so that the decorative panels are centered, which is convenient for the manipulator to grab and convenient for the manipulator to subsequently place the centered decorative panels on the carrying suction plate 7 to realize positioning and transportation, and convenient for the subsequent detachable scraper 21 to scrape off the epoxy resin waste on the front of the decorative panels and the detachable scraper frame 24 to scrape off the epoxy resin waste around the decorative panels. When the manipulator places a decorative panel, the conveying track 3 stops conveying, and after the above decorative panel is placed, the conveying track 3 starts conveying, and the next decorative panel is placed and transported;

[0038] The conveying mechanism includes a conveying track 3, on which a plurality of placement seats 6 are arranged at equal intervals, on which a bearing suction plate 7 for sucking the decorative plate is arranged, and on which a plurality of suction holes 8 are opened, which are connected to the vacuum generator through a connecting pipe, and a sealing strip 9 is arranged around a side of the bearing suction plate 7 facing the decorative plate;

[0039] The supporting suction plate 7 is used to place decorative panels of different sizes. The size of the placement seat 6 is larger than the largest decorative panel placed on the supporting suction plate 7. The setting of the sealing strip 9 improves the sealing effect, so that the decorative panel is stable during vacuum suction, which is convenient for scraping off the epoxy resin waste on the front and surrounding of the decorative panel.

[0040] A chassis 1 is provided below the conveying track 3, a collecting box 10 is provided on the top of the chassis 1 outside the conveying track 3, a collecting chamber is provided on the collecting box 10 below the conveying track 3, and the collecting box 10 cooperates with the collecting chamber, so that when the conveying track 3 sequentially conveys the placement seat 6 above to the bottom, the epoxy resin waste falling into the collecting trough 13 falls into the collecting chamber of the collecting box 10;

[0041] S3: The decorative panels conveyed in sequence are scraped one by one by a hot air scraping mechanism, and the epoxy resin waste on the front and surrounding of the decorative panels is softened by hot air and then scraped off;

[0042] The hot air scraping mechanism comprises a hot air scraping box 2, a conveying track 3 passes through the lower part of the hot air scraping box 2, and the hot air scraping box 2 is divided into a hot air chamber 15 near the feeding end of the conveying track 3 and a scraping chamber 16 near the discharging end of the conveying track 3 by a partition 14. The hot air chamber 15 is provided with a hot air mechanism for hot air softening the decorative board conveyed through the conveying track 3;

[0043] A scraping passage 20 for the decorative board to pass through is provided at the lower part of the partition 14. A detachable scraper 21 for scraping off the epoxy resin waste on the front of the decorative board is provided at one end of the scraping passage 20 facing the hot air chamber 15.

[0044] The detachable scraper 21 can be detachably mounted on the partition 14. The mounting height of the detachable scraper 21 can be adjusted in advance according to the different sizes of the decorative panels, so that the detachable scraper 21 can scrape off the epoxy resin waste on the front of the decorative panels. The height of the scraping channel 20 can adapt to the thickness of the decorative panels of different sizes.

[0045] A suction box 25 is provided in the hot air chamber 15 at one side of the detachable scraper 21, a suction chamber 26 is provided in the suction box 25, a suction mechanism is provided in the suction chamber 26, a feeding port 27 connected to the suction chamber 26 is provided on the side of the suction box 25 facing the detachable scraper 21, the suction chamber 26 is connected to the collection chamber, and the scraping mechanism is used to conveniently suck the epoxy resin waste scraped by the detachable scraper 21 into the suction chamber 26 through the feeding port 27, and then falls into the collection chamber;

[0046] A scraping mechanism for scraping off epoxy resin waste around the decorative plate is provided in the scraping chamber 16;

[0047] After the decorative board is scraped out of the scraping chamber 16, the vacuum generator cooperates with the connecting pipe to deflate, so that the supporting suction plate 7 no longer sucks the back of the decorative board, and the decorative board after scraping is clamped and taken to the next station by the clamping claw;

[0048] S4: Collect the scraped epoxy resin waste, put it into a 4 mol / L nitric acid solution, and then soak it in a constant temperature water bath at 80°C for a certain period of time, then add ethyl acetate to the solution, filter to remove the filter residue after a certain period of time, then wash with sodium carbonate solution until neutral, remove ethyl acetate after distillation, and obtain the epoxy resin finished product.

[0049] In a further embodiment, the hot air mechanism includes a blast hood 17 disposed in the hot air chamber 15 , a blower 18 is disposed in the blast hood 17 , and an electric heating pipe 19 is disposed at the air outlet end of the blower 18 .

[0050] Through the above technical solution, the blower 18 is used to blow air, and the electric heating tube 19 heats the air to form hot air, and the epoxy resin waste on the front and surrounding of the decorative panel in the hot air chamber 15 is softened by hot air, wherein the air outlet of the blower hood 17 faces the conveying track 3.

[0051] In a further embodiment, the scraping mechanism includes two slide cylinders 22 arranged in the scraping chamber 16, and the output ends of the two slide cylinders 22 are connected to the connecting frame 23. A detachable scraping frame 24 is fixed at the bottom of the connecting frame 23 for scraping off the epoxy resin waste around the decorative panel.

[0052] Through the above technical solution, the connecting frame 23 is driven to move by the slide cylinder 22, and then the detachable scraper frame 24 is driven to scrape off the epoxy resin waste around the decorative plate, wherein a camera for detecting the position of the decorative plate directly below the detachable scraper frame 24 is provided in the middle of the bottom of the connecting frame 23. When the camera detects that the decorative plate moves to the position directly below the detachable scraper frame 24, the conveying track 3 stops conveying. After the detachable scraper frame 24 scrapes off the epoxy resin waste around the decorative plate, the conveying track 3 continues to convey the decorative plate.

[0053] The detachable scraper frame 24 can be detachably installed at the bottom of the connecting frame 23. Different detachable scraper frames 24 are installed in advance according to the different sizes of the decorative panels, so that the detachable scraper frame 24 can be used to scrape off the epoxy resin waste around the decorative panels.

[0054] In a further embodiment, a detachable base 11 cooperating with the detachable scraper frame 24 is provided on the placement seat 6 outside the support suction plate 7 , and a collecting trough 13 is provided on the placement seat 6 outside the support suction plate 7 .

[0055] Through the above technical scheme, detachable bases 11 of different sizes are installed in advance according to the different sizes of decorative panels. The setting of the detachable base 11 is convenient for supporting the downward detachable scraper frame 24 and protecting the placement seat 6. The setting of the collecting trough 13 is convenient for collecting the epoxy resin waste around the decorative panel scraped by the detachable scraper frame 24.

[0056] In a further embodiment, the suction mechanism includes a negative pressure fan 28 arranged in the suction chamber 26 at one end away from the feed port 27, and a material blocking filter 29 is provided on the side of the air outlet end of the negative pressure fan 28 facing the feed port 27. The bottom of the suction box 25 is located at the bottom of the feed port 27 and is provided with a first material guide inclined plate 30, and the bottom of the material blocking filter 29 is provided with a second material guide inclined plate 31. A discharge port 32 connected to the collection chamber is formed between the first material guide inclined plate 30 and the second material guide inclined plate 31.

[0057] Through the above technical solution, the negative pressure fan 28 works to exhaust air, and the material blocking filter 29 is set to block the epoxy resin waste. Through the cooperation of the first material guide inclined plate 30 and the second material guide inclined plate 31, the epoxy resin waste entering the suction chamber 26 is conveniently introduced into the discharge port 32.

[0058] In a further embodiment, a pressure sensor 12 is provided on the detachable base 11 .

[0059] Through the above technical solution, the pressure sensor 12 is provided to facilitate the detection of the pressure of the detachable scraper frame 24 that moves down to the detachable base 11, thereby preventing the continuously moving detachable scraper frame 24 from damaging the placement seat 6.

[0060] In a further embodiment, a feed cover 4 communicating with the hot air chamber 15 is provided on the hot air scraper box 2 at the feed end facing the conveying track 3, and a discharge cover 5 communicating with the scraper chamber 16 is provided on the hot air scraper box 2 at the discharge end facing the conveying track 3.

[0061] Through the above technical solution, the provision of the feed cover 4 and the discharge cover 5 facilitates the decorative plate to enter the hot air chamber 15 and move out of the scraping chamber 16 .

[0062] In a further embodiment, a collecting drawer is provided on the collecting box 10 at the collecting chamber, and a handle is provided on the collecting drawer.

[0063] Through the above technical solution, the collection drawer cooperates with the handle to facilitate the collection of epoxy resin waste falling into the collection chamber.

[0064] Working principle: Clean several waste decorative panels with epoxy resin on their surfaces, remove impurities on the surfaces of the decorative panels, dry the cleaned decorative panels, grab several cleaned and dried decorative panels of the same size through a robot and place them centrally on the support suction plate 7 on the conveying track 3, connect them to the vacuum generator through a connecting pipe, and evacuate the air so that the support suction plate 7 firmly sucks the back of the decorative panel. The firmly sucked decorative panel enters the hot air chamber 15, and the blower 18 blows the air. The electric heating pipe 19 heats the air to form hot air, and the epoxy resin waste on the front and surrounding of the decorative panel in the hot air chamber 15 is softened by hot air. The decorative panel enters the scraping chamber 16 through the scraping channel 20, and passes through The detachable scraper 21 scrapes off the softened epoxy resin waste on the front side of the decorative panel. When the decorative panel moves to the bottom of the detachable scraper frame 24, the connecting frame 23 is driven to move by the slide cylinder 22, thereby driving the detachable scraper frame 24 to scrape off the epoxy resin waste around the decorative panel. The negative pressure fan 28 works to exhaust air, and the epoxy resin waste scraped off by the detachable scraper 21 is sucked into the suction cavity 26 through the feed port 27, and then falls into the collection chamber. When the conveying track 3 conveys the upper placement seat 6 to the bottom in sequence, the epoxy resin waste falling into the collecting trough 13 falls into the collection chamber of the collecting box 10, thereby realizing the collection of epoxy resin waste, and the collected epoxy resin waste is recycled for subsequent treatment.

[0065] The preferred specific embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above specific embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A production and processing technology for recycling and reprocessing waste epoxy resin, characterized in that: The steps include: S1: cleaning a number of waste decorative panels with epoxy resin on their surfaces, removing impurities on the surfaces of the decorative panels, and drying the cleaned decorative panels. During cleaning, the front side of the decorative panels faces upward; S2: grab several cleaned and dried decorative panels onto a conveying mechanism through a manipulator, position and convey the decorative panels through the conveying mechanism, and convey the cleaned and dried decorative panels through a conveyor belt. The manipulator is arranged above the discharge end of the conveyor belt, and correction cylinders for correcting the deflection of the decorative panels placed on the conveyor belt are arranged on both sides of the discharge end of the conveyor belt. The output end of the correction cylinder is connected to a correction plate. The two correction cylinders push the two correction plates to move, and correct the deflection of the decorative panels on the conveyor belt so that the decorative panels are centered. The conveying mechanism comprises a conveying track (3), a plurality of placement seats (6) are arranged at equal intervals on the conveying track (3), a bearing suction plate (7) for sucking the decorative plate is arranged on the placement seat (6), a plurality of suction holes (8) are opened on the bearing suction plate (7), the suction holes (8) are connected to the vacuum generator through a connecting pipe, and a sealing strip (9) is arranged around a side of the bearing suction plate (7) facing the decorative plate; A machine case (1) is provided below the conveying track (3); a collection box (10) is provided on the top of the machine case (1) and located outside the conveying track (3); a collection chamber is provided on the collection box (10) and located below the conveying track (3); S3: The decorative panels conveyed in sequence are scraped one by one by a hot air scraping mechanism, and the epoxy resin waste on the front and surrounding of the decorative panels is softened by hot air and then scraped off; The hot air scraping mechanism comprises a hot air scraping box (2), the conveying track (3) passes through the lower part of the hot air scraping box (2), the hot air scraping box (2) is divided into a hot air chamber (15) near the feeding end of the conveying track (3) and a scraping chamber (16) near the discharging end of the conveying track (3) by a partition (14), and a hot air mechanism for hot air softening the decorative board conveyed through the conveying track (3) is provided in the hot air chamber (15); A scraping passage (20) for the decorative panel to pass through is provided at the lower portion of the partition plate (14); a detachable scraper (21) for scraping off epoxy resin waste on the front surface of the decorative panel is provided at one end of the scraping passage (20) facing the hot air chamber (15); A suction box (25) is provided in the hot air chamber (15) on one side of the detachable scraper (21), a suction cavity (26) is provided in the suction box (25), a suction mechanism is provided in the suction cavity (26), a feeding port (27) in communication with the suction cavity (26) is provided on the side of the suction box (25) facing the detachable scraper (21), and the suction cavity (26) is in communication with the collection chamber; The scraping chamber (16) is provided with a scraping mechanism for scraping off epoxy resin waste around the decorative panel; S4: Collect the scraped epoxy resin waste, put it into a 4 mol / L nitric acid solution, and then soak it in a constant temperature water bath at 80°C for a certain period of time, then add ethyl acetate to the solution, filter to remove the filter residue after a certain period of time, then wash with sodium carbonate solution until neutral, remove ethyl acetate after distillation, and obtain the epoxy resin finished product.

2. The production and processing technology for recycling and reprocessing waste epoxy resin according to claim 1, characterized in that: The hot air mechanism comprises a blast hood (17) arranged in the hot air chamber (15), a blower (18) is arranged in the blast hood (17), and an electric heating pipe (19) is arranged at the air outlet end of the blower (18).

3. The production and processing technology for recycling and reprocessing waste epoxy resin according to claim 1, characterized in that: The scraping mechanism comprises two slide cylinders (22) arranged in the scraping chamber (16), the output ends of the two slide cylinders (22) are connected to a connecting frame (23), and a detachable scraping frame (24) for scraping off epoxy resin waste around the decorative plate is fixed at the bottom of the connecting frame (23).

4. The production and processing technology for recycling and reprocessing waste epoxy resin according to claim 3, characterized in that: A detachable base (11) matching with a detachable scraper frame (24) is provided on the placement seat (6) outside the bearing suction plate (7), and a material collecting trough (13) is provided on the placement seat (6) outside the bearing suction plate (7).

5. The production and processing technology for recycling and reprocessing waste epoxy resin according to claim 1, characterized in that: The material suction mechanism comprises a negative pressure fan (28) arranged in the material suction chamber (26) at one end away from the material feed port (27); a material blocking filter (29) is provided on the side of the air outlet of the negative pressure fan (28) facing the material feed port (27); a first material guide inclined plate (30) is provided at the bottom of the material suction box (25) at the bottom of the material feed port (27); a second material guide inclined plate (31) is provided at the bottom of the material blocking filter (29); and a material outlet (32) communicating with the collection chamber is formed between the first material guide inclined plate (30) and the second material guide inclined plate (31).

6. The production and processing technology for recycling and reprocessing waste epoxy resin according to claim 4, characterized in that: The detachable base (11) is provided with a pressure sensor (12).

7. The production and processing technology for recycling and reprocessing waste epoxy resin according to claim 1, characterized in that: A feed cover (4) communicating with a hot air chamber (15) is provided on the hot air scraper box (2) at a feed end facing the conveying track (3), and a discharge cover (5) communicating with a scraper chamber (16) is provided on the hot air scraper box (2) at a discharge end facing the conveying track (3).

8. The production and processing technology for recycling and reprocessing waste epoxy resin according to claim 1, characterized in that: The collecting box (10) is provided with a collecting drawer located at the collecting chamber, and the collecting drawer is provided with a handle.

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