Method and device for removing paint from iron shells of waste household appliances

Abstract

The invention relates to the technical field of metal recovery, in particular to a waste household appliance iron shell paint removing device which comprises a box body, a heating chamber, a dust storage bin and a material storage bin are sequentially arranged in the box body from top to bottom, and a paint layer of a waste household appliance iron shell is heated through the heating chamber, so that the paint layer becomes loose; then a first scraping plate and a second scraping plate are used for scraping the paint layer of the iron shell in the transverse direction and the longitudinal direction correspondingly, the removal efficiency of the paint layer of the iron shell of the waste household appliance is improved, a first elastic plate and a second elastic plate can be better attached to the surface of the iron shell, and the paint layer on the surface of the iron shell can be better scraped; and the air pressure in the dust removal box body is reduced through the vacuum pump, and sweeps generated in the paint removal process enter the dust storage box body through the dust suction opening, so that the sweeps are conveniently and intensively collected and treated, and the harm to the environment is avoided. In addition, the invention further relates to a paint removing method for the iron shells of the waste household appliances.

Description

Technical Field

[0001] The invention relates to the technical field of metal recovery, in particular to a method and a device for stripping paint from iron casings of waste household appliances. Background Art

[0002] With the advancement of science and technology and the improvement of people's living standards, the speed of replacement of household appliances is accelerating, resulting in a sharp increase in the number of waste household appliances. If these waste household appliances are not properly handled, they will not only occupy a large amount of land resources, but also cause serious pollution to the environment, such as the leakage of heavy metals and harmful substances. Therefore, the research and development and application of waste household appliance recycling technology is particularly important.

[0003] Since metal products are sprayed with a layer of protective and decorative paint when they are used, the paint contains volatile organic compounds (VOCs), heavy metals and other harmful substances. If they are directly incinerated or landfilled, they will release toxic and harmful gases and leachate, causing pollution to the atmosphere, soil and water. In addition, some components in the paint may also be harmful to human health. Therefore, stripping and recycling the iron shells of waste household appliances can reduce the pollution of these harmful substances to the environment, reduce the damage to the ecological environment, and protect the safety of the human living environment.

[0004] In the prior art, the paint on the iron casing of waste household appliances is mainly removed by grinding, which is not only complicated but also has low removal efficiency, especially for the edges and uneven places, the paint is not removed cleanly, which affects the further recycling of the iron casing, and the debris generated by grinding will harm the environment. In view of this, we propose a method and device for removing paint from the iron casing of waste household appliances. Summary of the invention

[0005] The purpose of the present invention is to provide a method and device for stripping paint from iron casings of waste household appliances, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] On the one hand, the present invention provides a paint stripping device for iron housing of waste household appliances, comprising a box body, wherein a heating chamber, a dust storage bin, and a material storage bin are sequentially arranged inside the box body from top to bottom;

[0008] A first door is hingedly connected to the front side of the heating chamber, heating blocks are symmetrically arranged on both sides of the interior of the heating chamber, an annular slide groove is arranged inside the heating chamber, a slider is symmetrically slidably connected inside the annular slide groove, a first scraper is connected to one side of the slider close to the middle of the heating chamber through a spring, and a gap is left between the first scrapers on both sides;

[0009] The dust storage bin comprises two groups of symmetrically arranged dust storage boxes, a dust removal chamber is formed between the two groups of dust storage boxes, a support plate is slidably arranged on the top of the dust storage box, a clamping assembly is arranged above the support plate, a first motor is fixedly arranged on the outer side wall of the box, an output end of the first motor passes through the side wall of the box and is connected to a first telescopic rod, the other end of the first telescopic rod is fixedly connected to one side of the support plate, a second scraper is rotatably connected to one side of the dust storage box close to the dust removal chamber, a torsion spring is arranged between the second scraper and the side wall of the dust storage box, and when the torsion spring is in a normal working state, the opposite sides of the second scrapers on both sides abut against each other;

[0010] A dust suction port is provided on the top of the dust storage box and on one side close to the dust removal chamber. The dust suction port is located above the second scraper. A vacuum pump is connected to the outside of the dust storage box through a pipeline. A dustproof net is provided at the connection between the dust storage box and the pipeline.

[0011] A second door is hinged on the front side of the storage bin, and the bottom of the dust removal chamber is communicated with the storage bin.

[0012] Preferably, a second motor is fixedly arranged in the middle of the upper part of the box body, the output end of the second motor passes through the top wall of the box body and is fixedly connected to a rotating shaft, the bottom of the rotating shaft is fixedly connected to a connecting block, an L-shaped connecting rod is symmetrically arranged at the bottom of the connecting block, one end of the L-shaped connecting rod is fixedly connected to the connecting block, and the other end of the connecting rod is fixedly connected to the slider.

[0013] Preferably, a positioning rod is fixedly connected to one side of the slider close to the middle of the heating chamber, a sleeve is slidably sleeved on the outside of the positioning rod, a first scraper is fixedly connected to one end of the sleeve away from the slider, and the spring is sleeved on the outside of the sleeve.

[0014] Preferably, the clamping assembly includes a symmetrically arranged third motor, a second telescopic rod, and a clamping plate, the third motor is symmetrically arranged on the outside of the box, the output end of the third motor passes through the side wall of the box and is fixedly connected to the second telescopic rod, the other end of the second telescopic rod is fixedly connected to the clamping plate, and a step is provided on the side of the support plate away from the first telescopic rod.

[0015] Preferably, electric cylinders are symmetrically arranged on the front and rear sides above the box body, and the output ends of the electric cylinders penetrate through the top wall of the box body and are fixedly connected to a fixing groove.

[0016] Preferably, the first scraper includes a fixed plate and a first elastic plate, one side of the fixed plate is fixedly connected to the spring and the sleeve, and the other side of the fixed plate is fixedly connected to the first elastic plate, and a gap is left between the first elastic plates on both sides;

[0017] The second scraper includes a rotating plate and a second elastic plate. The rotating plate is rotatably connected to the side wall of the dust storage box. A torsion spring is arranged between the rotating plate and the side wall of the dust storage box. The end of the rotating plate away from the dust storage box is fixedly connected to the second elastic plate. When the torsion spring is in a normal working state, the opposite sides of the second elastic plates on both sides abut against each other.

[0018] Preferably, a temperature sensor is further provided inside the heating chamber, and a temperature display is provided outside the box body, and the temperature display is electrically connected to the temperature sensor for communication.

[0019] Preferably, the side wall of the dust storage box is slidably connected with a sliding groove through a track, and the side wall of the storage bin is provided with a heat dissipation window.

[0020] On the other hand, the present invention provides a method for removing paint from the iron casing of waste household appliances, comprising the following steps:

[0021] S1. Dismantle the iron casing of the waste household appliances to obtain a sheet-like iron casing;

[0022] S2, placing the sheet iron shell in a heating chamber for heating, and fixing it through a fixing groove and a support plate to loosen the paint layer;

[0023] S3, using the second motor to drive the first scraper to rotate, and scraping the paint layer on the surface of the flaky iron shell horizontally;

[0024] S4, scraping off the paint layer on the surface of the sheet-like iron shell longitudinally by the elastic plate of the second scraper;

[0025] S5. The iron shell after paint removal enters the storage bin for cooling;

[0026] S6. Take out the cooled iron shell for further recycling.

[0027] Preferably, the height of the sheet iron shell is smaller than the distance between the highest point of the L-shaped connecting rod and the annular slide groove, the width of the sheet iron shell is smaller than the maximum distance between the sleeves on both sides, and the internal temperature of the heating chamber is 60-100°C.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The device for removing paint from the iron shell of waste household appliances heats the paint layer of the iron shell of the waste household appliances through a heating chamber to loosen the paint layer, and then uses a first scraper and a second scraper to scrape the paint layer of the iron shell from the horizontal and vertical directions respectively, thereby improving the removal efficiency of the paint layer of the iron shell of the waste household appliances.

[0030] 2. The first scraper in the paint stripping device for the iron shell of waste household appliances includes a fixed plate and a first elastic plate, and the second scraper includes a rotating plate and a second elastic plate. The first elastic plate and the second elastic plate can better fit the surface of the iron shell, so that the paint layer on the surface can be better scraped off.

[0031] 3. The device for removing paint from the iron shell of waste household appliances reduces the air pressure inside the dust removal box through a vacuum pump. The waste generated during the paint removal process enters the dust storage box through the dust suction port, which is convenient for the centralized collection and treatment of the waste and avoids harm to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the internal structure of the box body in the present invention from a first viewing angle;

[0034] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0035] Figure 4 It is a schematic diagram of the internal structure of the box body in another perspective of the present invention;

[0036] Figure 5 For the present invention Figure 4 The enlarged structural diagram at B in the middle;

[0037] Figure 6 It is a schematic diagram of the annular chute structure in the present invention.

[0038] In the figure: 1, box body; 11, first motor; 12, second motor; 13, electric cylinder; 131, fixed groove; 121, rotating shaft; 122, connecting block; 123, L-shaped connecting rod; 2, heating chamber; 21, first box door; 22, heating block; 23, annular slide groove; 24, slider; 241, positioning rod; 242, sleeve; 25, spring; 26, first scraper; 261, fixed plate; 262, first elastic plate; 27, clamping assembly; 271, first Three motors; 272, second telescopic rod; 273, clamping plate; 28, temperature display; 29, temperature sensor; 3, dust storage bin; 31, dust storage box; 311, sliding groove; 32, dust removal chamber; 33, support plate; 331, step; 34, first telescopic rod; 35, second scraper; 351, rotating plate; 352, second elastic plate; 36, torsion spring; 37, dust suction port; 38, vacuum pump; 4, storage bin; 41, second box door; 42, heat dissipation window. DETAILED DESCRIPTION

[0039] 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.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0043] Example 1

[0044] See also Figure 1-Figure 6 As shown, a technical solution provided by the present invention is:

[0045] The device for removing paint from the iron shell of waste household appliances comprises a box body 1, wherein a heating chamber 2, a dust storage bin 3, and a material storage bin 4 are sequentially arranged inside the box body 1 from top to bottom. Before removing paint from the iron shell of waste household appliances, the iron shell of waste household appliances is first disassembled to obtain a sheet-like iron shell;

[0046] A first door 21 is hinged on the front side of the heating chamber 2. Heating blocks 22 are symmetrically arranged on both sides of the heating chamber 2. The heating blocks 22 are used to heat the iron shell to loosen the paint layer. An annular slide groove 23 is arranged inside the heating chamber 2. A slider 24 is symmetrically slidably connected inside the annular slide groove 23. A first scraper 26 is connected to the slider 24 on one side close to the middle of the heating chamber 2 through a spring 25. A gap is left between the first scrapers 26 on both sides. The slider 24 rotates in the annular slide groove 23 to drive the first scraper 26 to rotate. The sheet iron shell is placed between the first scrapers 26 on both sides through the first door 21. The paint layer on the sheet iron shell is scraped off laterally by the rotation of the first scraper 26.

[0047] The dust storage bin 3 includes two groups of symmetrically arranged dust storage boxes 31, which are used to collect waste scraps generated during the paint stripping process. A dust removal chamber 32 is formed between the two groups of dust storage boxes 31. A support plate 33 is slidably arranged on the top of the dust storage box 31, and the support plate 33 is used to support the bottom of the flaky iron shell. A clamping assembly 27 is arranged above the support plate 33, and the clamping assembly 27 is used to clamp and fix the bottom of the flaky iron shell to prevent the flaky iron shell from shaking during the paint stripping process. A first motor 11 is fixedly arranged on the outer side wall of the box 1, and the output end of the first motor 11 passes through the side wall of the box 1 and is connected to a first telescopic rod 34, and the other end of the first telescopic rod 34 is fixedly connected to one side of the support plate 33, and a second scraper is rotatably connected to one side of the dust storage box 31 close to the dust removal chamber 32. The second scraper 35 is provided with a torsion spring 36 between the second scraper 35 and the side wall of the dust storage box 31. When the torsion spring 36 is in a normal working state, the opposite sides of the second scrapers 35 on both sides abut against each other, so as to keep the heating chamber 2 warm. After the paint layer of the sheet iron shell is scraped off horizontally, the first motor 11 drives the support plate 33 to move in opposite directions, and at the same time, the clamping assembly 27 releases the clamping fixation of the sheet iron shell. The sheet iron shell enters the dust removal chamber 32 under the action of gravity and contacts with the second scraper 35. The second scraper 35 rotates downward under the pressure of the sheet iron shell and drives the torsion spring 36 to rotate. At the same time, during the falling process of the sheet iron shell, the second scraper 35 scrapes off its paint layer longitudinally. After the scraping is completed, the second scraper 35 is reset under the action of the torsion spring 36.

[0048] A dust suction port 37 is provided on the top of the dust storage box 31 and on one side close to the dust removal chamber 32. The dust suction port 37 is located above the second scraper 35. A vacuum pump 38 is connected to the outside of the dust storage box 31 through a pipeline. A dustproof net is provided at the connection between the dust storage box 31 and the pipeline. The vacuum pump 38 reduces the air pressure inside the dust removal box 31. The waste generated during the paint stripping process enters the dust storage box 31 through the dust suction port 37, which is convenient for the centralized collection and treatment of the waste.

[0049] A second door 41 is hinged on the front side of the storage bin 4, and the bottom of the dust removal chamber 32 is connected to the storage bin 4. The paint layer of the flaky iron shell is longitudinally scraped off by the dust removal chamber 32 and then enters the storage bin 4 for storage, and then can be taken out through the second door 41 for subsequent recycling.

[0050] In this embodiment, a second motor 12 is fixedly arranged in the middle of the upper part of the box body 1, and the output end of the second motor 12 passes through the top wall of the box body 1 and is fixedly connected to a rotating shaft 121, and a connecting block 122 is fixedly connected to the bottom of the rotating shaft 121, and an L-shaped connecting rod 123 is symmetrically arranged at the bottom of the connecting block 122, and one end of the L-shaped connecting rod 123 is fixedly connected to the connecting block 122, and the other end of the connecting rod 123 is fixedly connected to the slider 24. The rotation of the rotating shaft 121 is controlled by the second motor 12, and the rotation of the connecting block 122 and the L-shaped connecting rod 123 are driven at the same time, thereby driving the rotation of the slider 24.

[0051] The slider 24 is fixedly connected to a positioning rod 241 on one side close to the middle of the heating chamber 2. A sleeve 242 is slidably sleeved on the outer side of the positioning rod 241. The sleeve 242 is fixedly connected to the end away from the slider 24 with a first scraper 26. The spring 25 is sleeved on the outer side of the sleeve 242. The first scraper 26 rotates from the middle of the sheet iron shell to its edge. The first scraper 26 is squeezed and the spring 25 is compressed. At this time, the sleeve 242 is compressed along the positioning rod 241. The sleeve 242 and the positioning rod 241 exert pressure on the first scraper The movement of 26 plays a positioning role. After the first scraper 26 rotates to the edge of the sheet iron shell, the spring 25 starts to reset and drives the sleeve 242 to stretch along the positioning rod 241. The first scraper 26 scrapes the paint layer on the other side of the sheet iron shell. The second motor 12 controls the rotation of the rotating shaft 121, and at the same time drives the rotation of the connecting block 122 and the L-shaped connecting rod 123, thereby driving the rotation of the slider 24 and the first scraper 26, so that the first scraper 26 repeatedly scrapes the paint layer of the sheet iron shell.

[0052] In this embodiment, the clamping assembly 27 includes a symmetrically arranged third motor 271, a second telescopic rod 272, and a clamping plate 273. The third motor 271 is symmetrically arranged on the outside of the box body 1. The output end of the third motor 271 passes through the side wall of the box body 1 and is fixedly connected to the second telescopic rod 272. The other end of the second telescopic rod 272 is fixedly connected to the clamping plate 273. The movement of the second telescopic rod 272 is controlled by the third motor 271, thereby driving the clamping plate 273 to move toward each other and clamp and fix the sheet-like iron shell. A step 331 is provided on the side of the support plate 33 away from the first telescopic rod 34. The support plates 33 on both sides move toward each other under the control of the first motor 11, and the steps 331 on both sides abut against each other, which can support the sheet-like iron shell.

[0053] In order to make the sheet-like iron shell descend better in the dust removal chamber 32, electric cylinders 13 are symmetrically arranged on the front and rear sides above the box body 1. The output end of the electric cylinder 13 passes through the top wall of the box body 1 and is fixedly connected to a fixed groove 131. The electric cylinder 13 drives the fixed groove 131 to move downward. The fixed groove 131 contacts the top of the sheet-like iron shell, so that the fixed groove 131 pushes the sheet-like iron shell to move downward.

[0054] In this embodiment, the first scraper 26 includes a fixed plate 261 and a first elastic plate 262. One side of the fixed plate 261 is fixedly connected to the spring 25 and the sleeve 242, and the other side of the fixed plate 261 is fixedly connected to the first elastic plate 262. A gap is left between the first elastic plates 262 on both sides. When the surface of the sheet iron shell is uneven, the first elastic plate 262 can better fit the surface of the sheet iron shell, so as to better scrape off the paint layer on the surface.

[0055] The second scraper 35 includes a rotating plate 351 and a second elastic plate 352. The rotating plate 351 is rotatably connected to the side wall of the dust storage box 31. A torsion spring 36 is provided between the rotating plate 351 and the side wall of the dust storage box 31. The end of the rotating plate 351 away from the dust storage box 31 is fixedly connected to the second elastic plate 352. When the torsion spring 36 is in a normal working state, the opposite sides of the second elastic plates 352 on both sides abut against each other. The second elastic plates 352 can also better fit the surface of the sheet-like iron shell, making it easier to scrape off the paint layer on the surface.

[0056] In this embodiment, a temperature sensor 29 is further provided inside the heating chamber 2, and a temperature display 28 is provided outside the box body 1. The temperature display 28 is electrically connected to the temperature sensor 29 for communication. The temperature inside the heating chamber can be monitored in real time through the temperature sensor 29 and displayed through the temperature display 28, which is convenient for staff to perform real-time monitoring.

[0057] In order to facilitate the treatment of waste chips generated during the paint stripping process, the side wall of the dust storage box 31 is connected to a sliding groove 311 through a track sliding. The sliding groove 311 can be used to take out the waste chips collected inside the dust storage box 31 for dumping treatment.

[0058] In this embodiment, in order to facilitate cooling of the sheet iron shell stored in the storage bin 4, a heat dissipation window 42 is provided on the side wall of the storage bin 4 to prevent burns to the staff when the sheet iron shell is taken out.

[0059] When the paint stripping device for iron shells of waste household appliances of this embodiment is used, the sheet iron shell is placed between the first scrapers 26 on both sides through the first box door 21, and the support plates 33 on both sides move toward each other under the control of the first motor 11, and the steps 331 on both sides abut against each other to support the sheet iron shell. At the same time, the movement of the second telescopic rod 272 is controlled by the third motor 271, thereby driving the clamping plates 273 to move toward each other and clamp and fix the sheet iron shell, and the heating block 22 is used to heat the sheet iron shell to loosen the paint layer;

[0060] The second motor 12 controls the rotation of the rotating shaft 121, and at the same time drives the connection block 122 and the L-shaped connection rod 123 to rotate, thereby driving the slider 24 and the first scraper 26 to rotate, so that the first scraper 26 repeatedly scrapes the paint layer of the flaky iron shell. During the process of the first scraper 26 squeezing and scraping the flaky iron shell, the sleeve 242 and the positioning rod 241 play a positioning role in the movement of the first scraper 26. When the surface of the flaky iron shell is uneven, the first elastic plate 262 can better fit the surface of the flaky iron shell, so as to better scrape the paint layer on the surface.

[0061] After the paint layer of the flaky iron shell is scraped off laterally, the first motor 11 drives the support plate 33 to move in opposite directions, and at the same time, the third motor 271 controls the second telescopic rod 272 to move in opposite directions, and the clamping plate 273 releases the clamping fixation of the flaky iron shell. The flaky iron shell enters the dust removal chamber 32 under the action of gravity and contacts the second scraper 35. The second scraper 35 rotates downward under the pressure of the flaky iron shell and drives the torsion spring 36 to rotate. At the same time, during the falling process of the flaky iron shell, the second scraper 35 scrapes off its paint layer longitudinally. After the scraping is completed, the second scraper 35 is reset under the action of the torsion spring 36. In order to make the flaky iron shell fall better in the dust removal chamber 32, the electric cylinder 13 drives the fixed groove 131 to move downward, and the fixed groove 131 contacts the top of the flaky iron shell, so that the fixed groove 131 pushes the flaky iron shell to move downward.

[0062] The paint layer of the flaky iron shell is scraped off longitudinally in the dust removal chamber 32 and then enters the storage bin 4 for storage, where it is cooled through the heat dissipation window 42, and then can be taken out through the second box door 41 for subsequent recycling;

[0063] The waste generated during the paint stripping process is collected in the dust storage box 31, and the waste collected in the dust storage box 31 can be taken out through the sliding groove 311 for dumping.

[0064] Example 2

[0065] On the basis of Example 1, the present invention also provides a method for removing paint from the iron casing of waste household appliances, comprising the following steps:

[0066] S1. Dismantle the iron casing of the waste household appliances to obtain a sheet-like iron casing;

[0067] S2, placing the sheet iron shell in the heating chamber 2 for heating, and fixing it through the fixing groove 131 and the support plate 32 to loosen the paint layer;

[0068] S3, using the second motor 12 to drive the first scraper 26 to rotate, and scraping the paint layer on the surface of the sheet-like iron shell horizontally;

[0069] S4, longitudinally scraping off the paint layer on the surface of the sheet-like iron shell by the elastic plate 352 of the second scraper 35;

[0070] S5, the iron shell after paint removal enters the storage bin 3 for cooling;

[0071] S6. Take out the cooled iron shell for further recycling.

[0072] In this embodiment, the height of the sheet iron shell is smaller than the distance between the highest point of the L-shaped connecting rod 123 and the annular slide groove 23, and the width of the sheet iron shell is smaller than the maximum distance between the sleeves 242 on both sides;

[0073] In this embodiment, the internal temperature of the heating chamber 2 is 60-100° C., which makes the paint layer of the iron casing of the waste household appliance loose.

[0074] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for removing paint from iron housings of waste household appliances, comprising a housing (1), characterized in that: The box body (1) is provided with a heating chamber (2), a dust storage bin (3), and a material storage bin (4) in sequence from top to bottom; A first door (21) is hingedly connected to the front side of the heating chamber (2), heating blocks (22) are symmetrically arranged on both sides of the interior of the heating chamber (2), an annular slide groove (23) is arranged inside the heating chamber (2), a slider (24) is symmetrically slidably connected inside the annular slide groove (23), a side of the slider (24) close to the middle of the heating chamber (2) is connected to a first scraper (26) through a spring (25), and a gap is left between the first scrapers (26) on both sides; The dust storage bin (3) comprises two groups of symmetrically arranged dust storage boxes (31), a dust removal chamber (32) is formed between the two groups of dust storage boxes (31), a support plate (33) is slidably arranged on the top of the dust storage box (31), a clamping assembly (27) is arranged above the support plate (33), a first motor (11) is fixedly arranged on the outer wall of the box (1), an output end of the first motor (11) passes through the side wall of the box (1) and is connected to a first telescopic rod (34), the other end of the first telescopic rod (34) is fixedly connected to one side of the support plate (33), a second scraper (35) is rotatably connected to one side of the dust storage box (31) close to the dust removal chamber (32), a torsion spring (36) is arranged between the second scraper (35) and the side wall of the dust storage box (31), when the torsion spring (36) is in a normal working state, the opposite sides of the second scrapers (35) on both sides abut against each other; A dust suction port (37) is provided on the top of the dust storage box (31) and on a side close to the dust removal chamber (32); the dust suction port (37) is located above the second scraper (35); a vacuum pump (38) is connected to the outside of the dust storage box (31) via a pipeline; and a dustproof net is provided at the connection between the dust storage box (31) and the pipeline; A second door (41) is hingedly connected to the front side of the material storage bin (4), and the bottom of the dust removal chamber (32) is connected to the material storage bin (4).

2. The paint stripping device for iron casing of waste household appliances according to claim 1, characterized in that: A second motor (12) is fixedly arranged in the middle of the upper part of the box body (1); an output end of the second motor (12) passes through the top wall of the box body (1) and is fixedly connected to a rotating shaft (121); a connecting block (122) is fixedly connected to the bottom of the rotating shaft (121); an L-shaped connecting rod (123) is symmetrically arranged at the bottom of the connecting block (122); one end of the L-shaped connecting rod (123) is fixedly connected to the connecting block (122), and the other end of the connecting rod (123) is fixedly connected to the sliding block (24).

3. The paint stripping device for iron casing of waste household appliances according to claim 2, characterized in that: A positioning rod (241) is fixedly connected to one side of the slider (24) close to the middle of the heating chamber (2); a sleeve (242) is slidably sleeved on the outside of the positioning rod (241); an end of the sleeve (242) away from the slider (24) is fixedly connected to a first scraper (26); and the spring (25) is sleeved on the outside of the sleeve (242).

4. The paint stripping device for iron casing of waste household appliances according to claim 1, characterized in that: The clamping assembly (27) comprises a symmetrically arranged third motor (271), a second telescopic rod (272), and a clamping plate (273); the third motor (271) is symmetrically arranged on the outside of the box body (1); an output end of the third motor (271) passes through a side wall of the box body (1) and is fixedly connected to the second telescopic rod (272); the other end of the second telescopic rod (272) is fixedly connected to the clamping plate (273); and a step (331) is provided on a side of the support plate (33) away from the first telescopic rod (34).

5. The paint stripping device for iron casing of waste household appliances according to claim 1, characterized in that: Electric cylinders (13) are symmetrically arranged on the front and rear sides above the box body (1), and the output end of the electric cylinder (13) penetrates the top wall of the box body (1) and is fixedly connected to a fixing groove (131).

6. The paint stripping device for iron casing of waste household appliances according to claim 1, characterized in that: The first scraper (26) comprises a fixed plate (261) and a first elastic plate (262), one side of the fixed plate (261) is fixedly connected to the spring (25) and the sleeve (242), and the other side of the fixed plate (261) is fixedly connected to the first elastic plate (262), and a gap is left between the first elastic plates (262) on both sides; The second scraper (35) comprises a rotating plate (351) and a second elastic plate (352); the rotating plate (351) is rotatably connected to the side wall of the dust storage box (31); a torsion spring (36) is provided between the rotating plate (351) and the side wall of the dust storage box (31); one end of the rotating plate (351) away from the dust storage box (31) is fixedly connected to the second elastic plate (352); when the torsion spring (36) is in a normal working state, the opposite sides of the second elastic plates (352) on both sides abut against each other.

7. The paint stripping device for iron casing of waste household appliances according to claim 1, characterized in that: A temperature sensor (29) is also provided inside the heating chamber (2), and a temperature display (28) is provided outside the box (1), and the temperature display (28) is electrically connected to the temperature sensor (29) for communication.

8. The paint stripping device for iron casing of waste household appliances according to claim 1, characterized in that: The side wall of the dust storage box (31) is slidably connected to a sliding groove (311) via a track, and the side wall of the material storage bin (4) is provided with a heat dissipation window (42).

9. A method for removing paint from iron housings of waste household appliances, characterized in that: The following steps are involved: S1. Dismantle the iron casing of the waste household appliances to obtain a sheet-like iron casing; S2, placing the sheet-like iron shell in a heating chamber (2) for heating, and fixing it through a fixing groove (131) and a support plate (32) to loosen the paint layer; S3, using the second motor (12) to drive the first scraper (26) to rotate, so as to scrape the paint layer on the surface of the sheet-like iron shell in a transverse direction; S4, longitudinally scraping off the paint layer on the surface of the sheet-like iron shell by the elastic plate (352) of the second scraper (35); S5, the iron shell after paint removal enters the storage bin (3) for cooling; S6. Take out the cooled iron shell for further recycling.

10. The method for removing paint from iron casing of waste household appliances according to claim 9, characterized in that: The height of the sheet iron shell is smaller than the distance between the highest point of the L-shaped connecting rod (123) and the annular slide groove (23), the width of the sheet iron shell is smaller than the maximum distance between the sleeves (242) on both sides, and the internal temperature of the heating chamber (2) is 60-100°C.

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