Waste plastic depainting method and device

Abstract

The invention relates to the field of waste plastic paint removal, in particular to a waste plastic paint removal method and device which comprises a box body, four sets of supporting legs are installed below the box body, a box door is rotationally connected to one side of the box body, a top cover is rotationally connected to the upper portion of the box body, and a bottom cover is installed at the bottom of the box body. A paint remover can be sequentially sprayed to the plastic surface through the pressurized atomization tank, in the process, a first stirring rod and a second stirring rod continuously stir, the reaction effect of the paint remover is improved along with follow-up heating, along with stirring, a sieve tray vibrates, paint leather obtained after reaction is vibrated off, and the paint removal effect is improved. Meanwhile, the pressurized atomization tank can spray a water source to the plastic surface to accelerate the falling of the patent leather, in this way, it can be guaranteed that the paint remover is evenly sprayed, the reaction effect of the paint remover is improved through subsequent heating, vibration of the sieve tray is matched with water source spraying, the patent leather is effectively vibrated off, multidirectional stirring is conducted in the whole process, and the effect of each link is enhanced.

Description

Technical Field

[0001] The invention relates to the field of waste plastic paint stripping, and in particular to a waste plastic paint stripping method and a waste plastic paint stripping device. Background Art

[0002] Paint stripping of waste plastics is an important part of the recycling of waste plastics, which aims to remove impurities such as paint and coatings attached to the surface of plastics to improve the quality and utilization rate of recycled plastics. Paint stripping of waste plastics is an important part of the recycling of waste plastics, which aims to remove impurities such as paint and coatings attached to the surface of plastics to improve the quality and utilization rate of recycled plastics.

[0003] The Chinese patent application with announcement number CN218574492U, a paint stripping device, includes a waste removal box, a rotatable heating box is installed inside the waste removal box, heating blocks are installed on both sides of the inside of the heating box, and a sealing assembly is installed below the feed port and on the heating box. The utility model is provided with a waste removal box, a heating block and a heat insulation layer. After the aluminum waste enters from the feed port, the paddle is moved, and the sealing plate can be moved out of the second sliding groove while the paddle moves. While moving, the other end of the sealing plate will enter the first sliding groove and get stuck, which plays a protective role during the processing. After the waste aluminum enters the heating box, it is heated by the heating block inside the heating box to a temperature of about 500°. At this time, impurities such as glue and paint can be melted, but the aluminum will not melt.

[0004] In the existing paint stripping process, it is necessary to select a paint stripping method according to the material of the material, and plastic paint stripping generally adopts the method of spraying chemical paint strippers to carry out paint stripping work, but this kind of paint stripping method has the situation that the paint stripper cannot be sprayed evenly during use, resulting in incomplete paint stripping in the dead corners of the plastic parts, and after the existing paint strippers are sprayed onto the surface of the plastic parts, although they can make the paint fall off, they cannot guarantee that they are completely detached, and the paint may sag, requiring manual secondary peeling, and the existing paint stripping process generally waits for the paint stripper to react naturally with the paint surface after the spraying is completed. Since the reaction time of the two is relatively long, the overall efficiency of the paint stripping work is affected.

[0005] Therefore, it is necessary to invent a waste plastic paint stripping method and device to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a method and device for stripping paint from waste plastics. Through multi-directional stirring, the effects of spraying paint strippers and subsequent vibration paint stripping are significantly improved, and heating is used to improve the reaction effect of the paint strippers and shorten their cycle. Finally, spraying water can improve the effect of paint peeling, so as to solve the problems of uneven spraying of paint strippers and incomplete paint peeling in the prior art.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waste plastic paint stripping device, comprising a box body, four groups of supporting legs are installed at the bottom of the box body, a box door is rotatably connected to one side of the box body, a top cover is rotatably connected to the top of the box body, a bottom cover is installed at the bottom of the box body, a paint stripping tank is installed in the box body, and the top of the paint stripping tank is connected to the top cover, and the bottom of the paint stripping tank is connected to the bottom cover, one side of the paint stripping tank is rotatably connected to the tank door, and the tank door and the box door are on the same side, an electric heater is installed on the inner wall of the box body, pressurized atomizing tanks are installed at the four corners of the box body, and the pressurized atomizing tanks are respectively connected to the water tank and the paint stripping agent storage tank pipeline;

[0008] A paint stripping component is installed in the box and is used to strip paint from waste plastics;

[0009] The driving component is installed in the box and is used to drive the paint stripping component to work.

[0010] As a preferred solution of the present invention, the paint stripping assembly includes a motor, which is installed in a paint stripping tank. A carrying plate is installed at the output end of the motor, a positioning ring is fixed on the carrying plate, a positioning groove is opened on the inner wall of the paint stripping tank, and the positioning groove is slidably connected to the positioning ring.

[0011] As a preferred solution of the present invention, the carrying plate is symmetrically provided with discharge ports, and the discharge ports are communicated with the space below the paint stripping tank, a connecting shaft is installed at the center position of the carrying plate, a sieve plate is sleeved on the connecting shaft, a plurality of sieve slots are provided in the sieve plate, a plurality of scraper rods are installed in the carrying plate, and the scraper rods are slidably arranged with the corresponding sieve slots.

[0012] As a preferred solution of the present invention, a convex tooth ring 1 is sleeved and fixed on the connecting shaft, a convex tooth ring 2 is installed under the sieve plate, and the convex tooth ring 2 is meshed with the convex tooth ring 1, and the teeth of the convex tooth ring 2 and the convex tooth ring 1 are arc-shaped.

[0013] As a preferred solution of the present invention, a sliding seat is installed above the sieve plate, and the sliding seat is sleeved with the connecting shaft, a sleeve is sleeved and fixed on the connecting shaft, a spring is fitted in the sleeve, and the spring is sleeved with the connecting shaft, and the bottom of the spring is fitted with the top of the sliding seat.

[0014] As a preferred solution of the present invention, a plurality of stirring rods are installed in a circular distribution on the connecting shaft, an annular groove is opened on the side of the sieve plate, a slider is slidably connected in the annular groove, and the slider is fixedly connected to the inner wall of the paint stripping tank.

[0015] As a preferred solution of the present invention, the paint stripping assembly includes a main bevel gear, which is installed above the connecting shaft. Four groups of steel pipe shafts are rotatably connected in a ring-shaped distribution on the inner wall of the paint stripping tank. Several groups of through holes are opened on the surface of the steel pipe shaft, and the steel pipe shaft is connected to the pressurized atomization tank pipeline.

[0016] As a preferred solution of the present invention, a secondary bevel gear is installed on one side of each group of the steel pipe shaft, and each group of the secondary bevel gear is meshed with the main bevel gear, a plurality of groups of stirring rods are installed in a ring-shaped distribution on the steel pipe shaft, an arc-shaped electric heating plate is installed on the inner wall of the paint stripping tank, and the arc-shaped electric heating plate is linearly connected to the electric heater.

[0017] The waste plastic depainting method comprises the waste plastic depainting device as described above, and the specific processing steps are as follows:

[0018] S1: Place the waste plastic into the paint stripping tank through the top cover, then start the motor to drive the carrier plate to rotate, and at the same time, the pressurized atomizer sprays the paint stripping agent onto the waste plastic through the through hole of the steel pipe shaft;

[0019] S2: At this time, the stirring rods 1 and 2 will stir the waste plastics as they rotate. When the spraying is completed, the electric heater will heat to accelerate the paint stripping reaction of the paint stripper;

[0020] S3: Finally, with the continuous rotation, the sieve plate passes through the sieve slot, and the waste paint skin is screened and falls to the bottom of the paint stripping tank, completing the entire paint stripping process.

[0021] In the above technical solution, compared with the prior art, the technical effects and advantages provided by the present invention are as follows:

[0022] The paint stripper can be sprayed onto the plastic surface in sequence through a pressurized atomizer tank, and in the process, stirring rods one and two are continuously stirred, and with subsequent heating, the reaction effect of the paint stripper is improved, and with the progress of stirring, the sieve plate will vibrate to shake off the reacted paint, and at the same time, the pressurized atomizer tank will spray water onto the plastic surface to accelerate the shedding of the paint. In this way, the paint stripper can be sprayed evenly, and the subsequent heating improves the reaction effect of the paint stripper, and the vibration of the sieve plate cooperates with the spraying of water to effectively shake off the paint, and multi-directional stirring is performed throughout the process, thereby enhancing the effects of each link. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the bottom structure of the box body of the present invention;

[0026] Figure 3 It is a schematic diagram of the box sliced ​​structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the planed structure of the paint stripping can of the present invention;

[0028] Figure 5 It is a schematic diagram of the connection structure between the carrier plate and the sieve plate of the present invention;

[0029] Figure 6 For the present invention Figure 4 The enlarged structural diagram at A in the middle;

[0030] Figure 7 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0031] Figure 8 For the present invention Figure 4 Enlarged structural diagram at point C in the middle.

[0032] Description of reference numerals:

[0033] 001, box body; 101, support legs; 102, box door; 103, top cover; 104, bottom cover; 105, paint stripping tank; 106, tank door; 107, electric heater; 108, pressurized atomizing tank; 002, drive assembly; 201, motor; 202, carrier plate; 203, positioning ring; 204, positioning groove; 205, discharge port; 206, connecting shaft; 207, sieve plate; 208 , sieve slot; 209, scraper rod; 210, convex tooth ring one; 211, convex tooth ring two; 212, sliding seat; 213, sleeve; 214, spring; 215, stirring rod one; 216, annular groove; 217, slider; 003, paint stripping assembly; 301, main bevel gear; 302, steel pipe shaft; 303, through hole; 304, secondary bevel gear; 305, stirring rod two; 306, arc-shaped electric heating plate. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] The present invention provides Figure 1-8The waste plastic paint stripping device shown comprises a box body 001, four sets of supporting legs 101 are installed below the box body 001, a box door 102 is rotatably connected to one side of the box body 001, a top cover 103 is rotatably connected to the top of the box body 001, a bottom cover 104 is installed at the bottom of the box body 001, a paint stripping tank 105 is installed in the box body 001, and the top of the paint stripping tank 105 is connected to the top cover 103, and the bottom of the paint stripping tank 105 is connected to the bottom cover 104, one side of the paint stripping tank 105 is rotatably connected to a tank door 106, and the tank door 106 and the box door 102 are on the same side, an electric heater 107 is installed on the inner wall of the box body 001, and pressurized atomizing tanks 108 are installed at the four corners of the box body 001, and the pressurized atomizing tank 108 is respectively connected to the water tank and the paint stripping agent storage tank pipeline;

[0036] The water and the paint stripper may be atomized separately by means of a pressurized atomizing tank 108 .

[0037] Paint stripping assembly 003, installed in box 001, is used to strip paint from waste plastics;

[0038] The driving component 002 is installed in the box body 001 and is used to drive the paint stripping component 003 to work.

[0039] Furthermore, in the above structure, the paint stripping component 003 includes a motor 201, which is installed in the paint stripping tank 105. A carrying plate 202 is installed at the output end of the motor 201, and a positioning ring 203 is fixedly sleeved on the carrying plate 202. A positioning groove 204 is opened on the inner wall of the paint stripping tank 105, and the positioning groove 204 is slidably connected to the positioning ring 203.

[0040] The motor 201 drives the carrier plate 202 to rotate, and drives the positioning ring 203 to slide in the positioning groove 204, so that the carrier plate 202 can run more smoothly.

[0041] Furthermore, in the above structure, discharge ports 205 are symmetrically provided on the carrier plate 202, and the discharge ports 205 are communicated with the space below the paint stripping tank 105. A connecting shaft 206 is installed at the center position of the carrier plate 202, and a sieve plate 207 is sleeved on the connecting shaft 206. A plurality of sieve slots 208 are provided in the sieve plate 207. A plurality of scraper rods 209 are installed in the carrier plate 202, and the scraper rods 209 are slidably arranged with the corresponding sieve slots 208.

[0042] The supporting plate 202 can drive the connecting shaft 206 to rotate, thereby causing the scraper rod 209 to rotate, and the sieve plate 207 can support the plastic and sieve the paint through the sieve slot 208, and the scraper rod 209 can scrape the sieve slot 208 during rotation to ensure that the paint will not get stuck in the sieve slot 208.

[0043] Furthermore, in the above structure, a convex tooth ring 210 is sleeved and fixed on the connecting shaft 206, a convex tooth ring 211 is installed under the sieve plate 207, and the convex tooth ring 211 is meshed with the convex tooth ring 1 210, and the teeth of the convex tooth ring 211 and the convex tooth ring 1 210 are arc-shaped.

[0044] The convex tooth ring 1 210 is driven to rotate by the connecting shaft 206 , so that the convex tooth ring 1 210 squeezes the convex tooth ring 2 211 , thereby driving the sieve plate 207 to move upward, so that the sieve plate 207 sieves the paint leather through the sieve groove 208 .

[0045] Furthermore, in the above structure, a sliding seat 212 is installed above the sieve plate 207, and the sliding seat 212 is sleeved with the connecting shaft 206. A sleeve 213 is sleeved and fixed on the connecting shaft 206. A spring 214 is fitted inside the sleeve 213, and the spring 214 is sleeved with the connecting shaft 206, and the bottom of the spring 214 is fitted with the top of the sliding seat 212.

[0046] The sieve plate 207 is squeezed and moved, thereby squeezing the spring 214, so that the sieve plate 207 can be reset after the convex tooth ring 211 and the convex tooth ring 1 210 are misaligned. By repeating this action, the waste plastics are vibrated and screened to ensure the effect of paint peeling.

[0047] Furthermore, in the above structure, a plurality of stirring rods 215 are installed in a circular distribution on the connecting shaft 206, an annular groove 216 is opened on the side of the sieve plate 207, a slider 217 is slidably connected in the annular groove 216, and the slider 217 is fixedly connected to the inner wall of the paint stripping tank 105.

[0048] The stirring rod 215 can stir the waste plastics by rotating the connecting shaft 206, and the arrangement of the slider 217 and the annular groove 216 can ensure the stable position of the sieve plate 207 when it vibrates.

[0049] Furthermore, in the above structure, the paint stripping component 003 includes a main bevel gear 301, which is installed above the connecting shaft 206. Four groups of steel pipe shafts 302 are rotatably connected in a ring-shaped distribution on the inner wall of the paint stripping tank 105. Several groups of through holes 303 are opened on the surface of the steel pipe shaft 302, and the steel pipe shaft 302 is connected to the pressurized atomization tank 108 pipeline.

[0050] The water source and the paint stripper can be atomized and added into the steel pipe shaft 302 in batches through the pressurized atomizing tank 108 , and then sprayed onto the surface of the waste plastic through the through hole 303 .

[0051] Furthermore, in the above structure, a secondary bevel gear 304 is installed on one side of each group of steel pipe shafts 302, and each group of secondary bevel gears 304 is meshed with the main bevel gear 301, and multiple groups of stirring rods 305 are installed in a ring-shaped distribution on the steel pipe shaft 302, and an arc-shaped electric heating plate 306 is installed on the inner wall of the paint stripping tank 105, and the arc-shaped electric heating plate 306 is linearly connected to the electric heater 107.

[0052] The main bevel gear 301 drives the secondary bevel gear 304 to rotate, thereby rotating the steel pipe shaft 302, and then driving the stirring rod 2 305 to rotate and cooperate with the stirring rod 1 215 to stir the waste plastic, so that the paint stripper is sprayed evenly, and the arc-shaped electric heating plate 306 can accelerate the reaction efficiency of the paint stripper, and can be subsequently cleaned by spraying water, and the stirring rod 1 215 and the stirring rod 2 305 drive the stirring throughout the process to improve the paint stripping effect.

[0053] The waste plastic depainting method comprises the waste plastic depainting device as above, and the specific processing steps are as follows:

[0054] S1: Place the waste plastic into the paint stripping tank 105 through the top cover 103, then start the motor 201 to drive the carrier plate 202 to rotate, and at the same time, the pressurized atomizing tank 108 sprays the paint stripping agent onto the waste plastic through the through hole 303 of the steel pipe shaft 302;

[0055] S2: At this time, the stirring rod 1 215 and the stirring rod 2 305 will stir the waste plastics as they rotate. When the spraying is completed, the electric heater 107 is heated to accelerate the paint stripping reaction of the paint stripper;

[0056] S3: Finally, with the continuous rotation, the sieve plate 207 passes through the sieve slot 208, and the waste paint skin is screened and falls to the bottom of the paint stripping tank 105, completing the entire paint stripping process.

[0057] like Figure 1-8As shown, waste plastic is added to the sieve plate 207 inside the paint stripping tank 105 through the top cover 103, and the motor 201 is started to rotate the carrier plate 202, and the sieve plate 207 vibrates up and down, and the pressurized atomizing tank 108 first atomizes the paint stripping agent and transports it to the steel pipe shaft 302, and at the same time, the stirring rod 1 215 and the stirring rod 2 305 will stir the waste plastic, so that the paint stripping agent is evenly sprayed. After the spraying is completed, the spraying is stopped, and the stirring rod 1 215 and the stirring rod 2 305 continue to work, and the electric heater 107 will pass the arc The electric heating plate 306 is used for heating to accelerate the reaction of the paint stripper, and stirring can improve the uniformity of heating. After the reaction is completed, the water source is atomized and sprayed onto the surface of the waste plastic for washing. At the same time, continuous stirring can make the paint skin fall off better, and with the continuous vibration of the sieve plate 207, the paint skin is sieved off. This structure can ensure the uniform spraying of the paint stripper, and the subsequent heating improves the reaction effect of the paint stripper. The vibration of the sieve plate 207 and the continuous stirring of the sprayed water source can effectively shake off the paint skin, thereby completing the entire paint stripping work.

[0058] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A waste plastic paint stripping device, comprising a housing (001), characterized in that: Four groups of supporting legs (101) are installed below the box (001), a box door (102) is rotatably connected to one side of the box (001), a top cover (103) is rotatably connected to the top of the box (001), a bottom cover (104) is installed at the bottom of the box (001), a paint stripping tank (105) is installed in the box (001), and the top of the paint stripping tank (105) is connected to the top cover (103), and the paint stripping tank (105) is connected to the top cover (103). (105) is connected to the bottom cover (104) at the bottom, one side of the paint stripping tank (105) is rotatably connected to a tank door (106), and the tank door (106) and the box door (102) are on the same side, an electric heater (107) is installed on the inner wall of the box body (001), and pressurized atomizing tanks (108) are installed at the four corners of the box body (001), and the pressurized atomizing tank (108) is respectively connected to the water tank and the paint stripping agent storage tank pipeline; A paint stripping assembly (003), installed in the box (001), is used to strip paint from waste plastics; The driving component (002) is installed in the box (001) and is used to drive the paint stripping component (003) to work.

2. The waste plastic paint stripping device according to claim 1, characterized in that: The paint stripping assembly (003) comprises a motor (201), the motor (201) is installed in a paint stripping tank (105), a carrying plate (202) is installed at the output end of the motor (201), a positioning ring (203) is sleeved and fixed on the carrying plate (202), a positioning groove (204) is opened on the inner wall of the paint stripping tank (105), and the positioning groove (204) is slidably connected to the positioning ring (203).

3. The waste plastic paint stripping device according to claim 2, characterized in that: The carrier plate (202) is symmetrically provided with a discharge port (205), and the discharge port (205) is connected to the space below the paint stripping tank (105). A connecting shaft (206) is installed at the center position of the carrier plate (202), and a sieve plate (207) is sleeved on the connecting shaft (206). A plurality of sieve slots (208) are provided in the sieve plate (207). A plurality of scraper rods (209) are installed in the carrier plate (202), and the scraper rods (209) are slidably arranged with the corresponding sieve slots (208).

4. The waste plastic paint stripping device according to claim 3, characterized in that: A convex tooth ring 1 (210) is sleeved and fixed on the connecting shaft (206), and a convex tooth ring 2 (211) is installed below the sieve plate (207). The convex tooth ring 2 (211) is meshed with the convex tooth ring 1 (210), and the teeth of the convex tooth ring 2 (211) and the convex tooth ring 1 (210) are arc-shaped.

5. The waste plastic paint stripping device according to claim 4, characterized in that: A sliding seat (212) is installed above the sieve plate (207), and the sliding seat (212) is sleeved with the connecting shaft (206). A sleeve (213) is sleeved and fixed on the connecting shaft (206). A spring (214) is fitted inside the sleeve (213), and the spring (214) is sleeved with the connecting shaft (206), and the lower part of the spring (214) is fitted with the upper part of the sliding seat (212).

6. The waste plastic paint stripping device according to claim 5, characterized in that: A plurality of stirring rods (215) are arranged in an annular arrangement on the connecting shaft (206), an annular groove (216) is provided on the side of the sieve plate (207), a slider (217) is slidably connected in the annular groove (216), and the slider (217) is fixedly connected to the inner wall of the paint stripping tank (105).

7. The waste plastic paint stripping device according to claim 1, characterized in that: The paint stripping assembly (003) comprises a main bevel gear (301), which is mounted above a connecting shaft (206). Four groups of steel pipe shafts (302) are rotatably connected in an annular arrangement on the inner wall of the paint stripping tank (105), and a plurality of through holes (303) are formed on the surface of the steel pipe shaft (302), and the steel pipe shaft (302) is connected to a pipeline of a pressurized atomizing tank (108).

8. The waste plastic paint stripping device according to claim 7, characterized in that: A secondary bevel gear (304) is installed on one side of each group of the steel pipe shaft (302), and each group of secondary bevel gears (304) is meshed with the main bevel gear (301), and multiple groups of stirring rods (305) are installed in a ring-shaped distribution on the steel pipe shaft (302), and an arc-shaped electric heating plate (306) is installed on the inner wall of the paint stripping tank (105), and the arc-shaped electric heating plate (306) is linearly connected to the electric heater (107).

9. A method for depainting waste plastics, comprising a waste plastic depainting device as claimed in any one of claims 1 to 8, characterized in that: The processing steps are as follows: S1: placing the waste plastic into the paint stripping tank (105) through the top cover (103), and then starting the motor (201) to drive the carrier plate (202) to rotate, while the pressurized atomizing tank (108) sprays the paint stripping agent onto the waste plastic through the through hole (303) of the steel pipe shaft (302); S2: At this time, the stirring rod 1 (215) and the stirring rod 2 (305) will stir the waste plastics as they rotate. When the spraying is completed, the electric heater (107) is heated to accelerate the paint stripping reaction of the paint stripper; S3: Finally, with the continuous rotation, the sieve plate (207) passes through the sieve slot (208), and the waste paint is screened and falls to the bottom of the paint stripping tank (105), completing the entire paint stripping process.

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