Waste acrylic cracking temperature control device

Abstract

The invention belongs to the technical field of waste acrylic material heating and cracking, and discloses a waste acrylic cracking temperature control device which comprises a cracking shell, a feeding port is fixedly connected to the cracking shell, a middle-layer partition plate is fixedly connected to the interior of the cracking shell, an inner-layer partition plate is fixedly connected to the interior of the cracking shell, and the inner-layer partition plate is fixedly connected to the interior of the cracking shell. An inner material sliding ring is fixedly connected to the upper end of the inner-layer partition plate, a middle-layer material sliding ring is fixedly connected to the upper end of the middle-layer partition plate, and a middle-layer filter screen is arranged between the inner material sliding ring and the middle-layer material sliding ring; through the cooperation of the inner-layer filter screen, the middle-layer filter screen and other structures, waste acrylic materials in the inner feeding sliding pipe are filtered for the first time through the inner-layer filter screen, and the remaining waste acrylic materials are filtered for the second time through the middle-layer filter screen; and the residual waste acrylic material slides into the space between the cracking shell and the middle-layer partition plate through the middle-layer material sliding ring.

Description

Technical Field

[0001] The invention belongs to the technical field of heating and cracking of waste acrylic materials, in particular to a waste acrylic cracking temperature control device. Background Art

[0002] Acrylic, commonly known as plexiglass, will produce some acrylic sheet waste during the production process. Due to its small size, it cannot be sold as a product, so it is necessary to recycle these acrylic sheet waste. At the same time, acrylic is a recyclable material. The recycled acrylic can be reprocessed into new products.

[0003] Existing acrylic recycling generally heats the acrylic to crack it into liquid, and then processes it into new products. During the acrylic heating and cracking process, all the waste acrylic materials are generally added to the heating chamber for heating and cracking. The added waste acrylic materials are of different sizes, which makes the waste acrylic materials of different sizes heated unevenly during the heating process, resulting in reduced heating efficiency. At the same time, the heating temperature cannot be controlled according to the amount of waste acrylic materials added, resulting in a waste of resources. Summary of the invention

[0004] In order to solve the problem proposed in the above background technology that different sizes of waste acrylic materials are heated differently, which may lead to reduced heating efficiency of the waste acrylic materials, and at the same time, the heating temperature cannot be controlled according to the amount of heated waste acrylic materials, resulting in waste of resources, the present invention provides a waste acrylic cracking temperature control device.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waste acrylic cracking temperature control device, comprising a cracking shell, a feed port fixedly connected to the cracking shell, a middle-layer partition plate fixedly connected inside the cracking shell, an inner-layer partition plate fixedly connected inside the cracking shell, an inner sliding ring fixedly connected to the upper end of the inner-layer partition plate, a middle-layer sliding ring fixedly connected to the upper end of the middle-layer partition plate, a middle-layer filter screen is arranged between the inner sliding ring and the middle-layer sliding ring, an inner-layer filter screen is arranged inside the inner sliding ring, an electric push rod is installed on the outer contour of the cracking shell, a connecting transmission plate is fixedly connected to the upper end of the electric push rod, and a feed control structure is fixedly connected to the connecting transmission plate.

[0006] Preferably, the feed control structure includes an inner feed sliding tube fixedly connected to a connecting transmission plate, the inner feed sliding tube is slidably connected to an inner feed blocking tube, a feed control tube is fixedly connected inside the inner feed sliding tube, a symmetrically distributed connecting sliding plate is fixedly connected to the outer contour of the inner feed blocking tube, and the connecting sliding plate is slidably connected to a middle-layer feed blocking tube.

[0007] Preferably, a symmetrically distributed middle-layer filter screen is fixedly connected to the middle-layer sliding ring, the middle-layer filter screen is slidably connected to the middle-layer feed baffle pipe, and the aperture of the inner-layer filter screen is smaller than the aperture of the middle-layer filter screen.

[0008] Preferably, a fourth return spring is provided between the connecting transmission plate and the inner feed retaining tube, the lower end of the middle feed retaining tube is in contact with the middle sliding ring, and the lower end of the inner feed retaining tube is in contact with the inner sliding ring.

[0009] Preferably, the cracking shell is fixedly connected to symmetrically distributed shell brackets, a hot air blower is installed on one of the shell brackets, an air inlet duct is fixedly connected to the hot air blower, the air inlet duct is fixedly connected to the cracking shell, and the air inlet duct is connected to the middle partition plate and the inner partition plate.

[0010] Preferably, an outer sliding plate is slidably connected between the cracking outer shell and the middle partition plate, a first return spring is arranged between the outer sliding plate and the cracking outer shell, a middle sliding plate is slidably connected between the middle partition plate and the inner partition plate, a second return spring is arranged between the middle sliding plate and the cracking outer shell, an inner sliding plate is slidably connected within the inner partition plate, and a third return spring is arranged between the inner sliding plate and the cracking outer shell.

[0011] Preferably, the lower end of the outer sliding plate is fixedly connected to an outer piston baffle, the lower end of the middle sliding plate is fixedly connected to a middle piston baffle, and the lower end of the inner sliding plate is fixedly connected to an inner piston baffle. The outer piston baffle, the middle piston baffle and the inner piston baffle are all slidably connected to the cracking shell. The curvature of the outer piston baffle is the same as the curvature of the inner diameter of the cracking shell, the curvature of the middle piston baffle is the same as the curvature of the inner diameter of the middle partition plate, and the curvature of the inner piston baffle is the same as the curvature of the inner diameter of the inner partition plate.

[0012] Preferably, the cracking shell, the middle partition plate and the inner partition plate are all provided with air outlets connected to the air inlet duct, and the width of the air outlets of the cracking shell, the middle partition plate and the inner partition plate is smaller than the width of the corresponding outer piston baffle, the middle piston baffle and the inner piston baffle.

[0013] Preferably, a feed baffle is fixedly connected in the feed port, a fixed bracket is fixedly connected on the upper side of the feed baffle in the feed port, a feed sliding block is slidably connected in the feed baffle, the feed sliding block and the fixed bracket are slidably connected, and a fifth return spring is arranged between the feed sliding block and the fixed bracket.

[0014] Preferably, the feed sliding block is extruded and matched with the feed control tube, and the inner diameter of the feed port is the same as the outer diameter of the inner feed sliding tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides an inner filter screen and a middle filter screen and other structures to perform a first filtration on the waste acrylic material in the inner feed sliding tube through the inner filter screen, and perform a second filtration on the remaining waste acrylic material through the middle filter screen. The remaining waste acrylic material slides into between the cracking shell and the middle partition plate through the middle sliding ring, and then the waste acrylic material is heated by hot air blown out by a hot air blower. By filtering the waste acrylic material, waste acrylic materials of the same size are heated together, so that the heating effect of the hot air on the waste acrylic material is enhanced, and the heating efficiency is accelerated.

[0017] The present invention cooperates with structures such as a hot air blower and an outer sliding plate, and the waste acrylic material falls on the outer sliding plate, the middle sliding plate and the inner sliding plate to make the outer sliding plate, the middle sliding plate and the inner sliding plate slide downward, and controls the downward sliding distance of the outer piston baffle plate, the middle piston baffle plate and the inner piston baffle plate according to the weight of the waste acrylic material, thereby controlling the amount of hot air blown by the hot air blower to enter, and thereby controlling the heating temperature of the waste acrylic material of different weights;

[0018] The present invention cooperates with structures such as an inner feed sliding tube and a feed sliding block, and the inner feed sliding tube drives the feed control tube to slide up into the feed port, and then the feed control tube squeezes the feed sliding block, so that the sealed state between the feed sliding block and the feed baffle is released, and the waste acrylic material enters the inner feed sliding tube through the gap between the feed baffle and the feed sliding block, and is then filtered for the first time by the inner filter screen. As the inner feed sliding tube slides up and down, the waste acrylic material that has passed the first filtration slides into the middle filter screen through the inner sliding ring for the second filtration, and the middle feed baffle tube is driven to slide upward by the connecting sliding plate, so that the remaining waste acrylic material all enters the outer sliding plate, thereby achieving graded filtration of the waste acrylic material, and controlling waste acrylic materials of the same size to be heated and cracked together. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 A half-section schematic diagram of the cracking shell of the present invention;

[0021] Figure 3 A half-section schematic diagram of the internal structure of the present invention;

[0022] Figure 4 A half-section schematic diagram of a partition baffle of the present invention;

[0023] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0024] Figure 6 This is a schematic diagram of the connection of the filter screen of the present invention;

[0025] Figure 7 A half-section schematic diagram of the connection between the inner layer partition plate and the feed sliding pipe of the present invention;

[0026] Figure 8 It is a half-section schematic diagram of the feed baffle of the present invention.

[0027] In the figure: 100, cracking shell; 101, shell support; 102, feed port; 103, middle layer partition plate; 104, inner layer partition plate; 200, hot air blower; 201, air inlet duct; 300, electric push rod; 301, connecting transmission plate; 400, outer layer sliding plate; 401, first return spring; 402, middle layer sliding plate; 403, second return spring; 404, inner layer sliding plate; 405, third return spring; 406, outer layer piston baffle; 407, middle layer Piston baffle; 408, inner piston baffle; 500, inner feed sliding tube; 501, inner feed baffle tube; 502, middle feed baffle tube; 503, connecting sliding plate; 504, feed control tube; 505, fourth return spring; 506, inner sliding ring; 507, middle sliding ring; 508, limit slide rod; 509, middle filter screen; 510, inner filter screen; 600, feed baffle; 601, fixed bracket; 602, fifth return spring; 603, feed sliding block. DETAILED DESCRIPTION

[0028] 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.

[0029] like Figures 1 to 8 As shown, the present invention provides a waste acrylic cracking temperature control device, including a cracking shell 100, a feed port 102 is fixedly connected to the cracking shell 100, a middle layer partition plate 103 is fixedly connected inside the cracking shell 100, an inner layer partition plate 104 is fixedly connected inside the cracking shell 100, an inner sliding ring 506 is fixedly connected to the upper end of the inner layer partition plate 104, a middle layer sliding ring 507 is fixedly connected to the upper end of the middle layer partition plate 103, a middle layer filter screen 509 is arranged between the inner sliding ring 506 and the middle layer sliding ring 507, an inner layer filter screen 510 is arranged in the inner sliding ring 506, an electric push rod 300 is installed on the outer contour of the cracking shell 100, a connecting transmission plate 301 is fixedly connected to the upper end of the electric push rod 300, and a feed control structure is fixedly connected to the connecting transmission plate 301.

[0030] The above scheme is adopted: the feed control structure is driven to slide up and down by the electric push rod 300, thereby controlling the waste acrylic material entering from the feed port 102 to enter the cracking shell 100, so that the waste acrylic material is first filtered through the inner filter screen 510 to the inner partition plate 104, and then the remaining waste acrylic material is filtered through the middle filter screen 509 to between the middle partition plate 103 and the inner partition plate 104, and finally the remaining waste acrylic material enters between the middle partition plate 103 and the cracking shell 100, so that the waste acrylic material entering the cracking shell 100 is divided into large and small sizes.

[0031] like Figures 4 to 6 As shown, the feed control structure includes an inner feed sliding tube 500 fixedly connected to the connecting transmission plate 301, the inner feed sliding tube 500 is slidably connected to the inner feed blocking tube 501, a feed control tube 504 is fixedly connected inside the inner feed sliding tube 500, a symmetrically distributed connecting sliding plate 503 is fixedly connected to the outer contour of the inner feed blocking tube 501, and the connecting sliding plate 503 is slidably connected to the middle-layer feed blocking tube 502.

[0032] A symmetrically distributed middle filter screen 509 is fixedly connected to the middle sliding ring 507 . The middle filter screen 509 is slidably connected to the middle feed baffle tube 502 . The aperture of the inner filter screen 510 is smaller than that of the middle filter screen 509 .

[0033] A fourth return spring 505 is provided between the connecting transmission plate 301 and the inner feed retaining tube 501 , the lower end of the middle feed retaining tube 502 is fitted with the middle sliding ring 507 , and the lower end of the inner feed retaining tube 501 is fitted with the inner sliding ring 506 .

[0034] The above scheme is adopted: the electric push rod 300 drives the connecting transmission plate 301 to slide up and down, and then drives the inner feed sliding tube 500 to slide up and down, so that the waste acrylic materials entering the cracking shell 100 through the feed port 102 all fall into the inner feed sliding tube 500, and then the waste acrylic materials are filtered for the first time through the inner filter screen 510. The waste acrylic materials filtered for the first time enter the inner partition plate 104, and as the inner feed sliding tube 500 slides upward, the fourth return spring 505 drives the inner feed baffle tube 501 to slide upward, so that the remaining waste acrylic materials in the inner feed sliding tube 500 slide through the inner sliding ring 506 to the middle filter screen 509. The waste acrylic material is filtered for the second time through the middle filter screen 509, so that the filtered waste acrylic material enters between the middle partition plate 103 and the inner partition plate 104, and the remaining waste acrylic material is blocked by the middle feed baffle tube 502. As the inner feed sliding tube 500 continues to slide upward, the inner feed baffle tube 501 drives the middle feed baffle tube 502 to slide upward through the connecting sliding plate 503, so that the remaining waste acrylic material passes through the middle sliding ring 507 and slides into between the cracking shell 100 and the middle partition plate 103. Since the aperture of the inner filter screen 510 is smaller than that of the middle filter screen 509, the waste acrylic material is divided into different sizes to facilitate subsequent heating and cracking.

[0035] like Figure 8 As shown, a feed baffle 600 is fixedly connected inside the feed port 102, a fixed bracket 601 is fixedly connected on the upper side of the feed baffle 600 inside the feed port 102, a feed sliding block 603 is slidably connected inside the feed baffle 600, the feed sliding block 603 and the fixed bracket 601 are slidably connected, and a fifth return spring 602 is arranged between the feed sliding block 603 and the fixed bracket 601.

[0036] The feed sliding block 603 is extruded and matched with the feed control tube 504 , and the inner diameter of the feed port 102 is the same as the outer diameter of the inner feed sliding tube 500 .

[0037] The above scheme is adopted: when the connecting transmission plate 301 drives the inner feed sliding tube 500 to slide upward into the feed port 102, since the outer diameter of the inner feed sliding tube 500 is the same as the inner diameter of the feed port 102, the feed sliding block 603 is squeezed upward through the feed control tube 504, thereby unlocking the sealing state of the feed sliding block 603 and the feed baffle 600, so that the waste acrylic material enters the inner feed sliding tube 500 through the gap between the feed sliding block 603 and the feed baffle 600.

[0038] like Figures 1 to 4As shown, the cracking shell 100 is fixedly connected to symmetrically distributed shell brackets 101, a hot air blower 200 is installed on one shell bracket 101, the hot air blower 200 is fixedly connected to an air inlet duct 201, the air inlet duct 201 is fixedly connected to the cracking shell 100, and the air inlet duct 201 is connected to the middle partition plate 103 and the inner partition plate 104.

[0039] An outer sliding plate 400 is slidably connected between the cracking shell 100 and the middle partition plate 103, a first return spring 401 is arranged between the outer sliding plate 400 and the cracking shell 100, a middle sliding plate 402 is slidably connected between the middle partition plate 103 and the inner partition plate 104, a second return spring 403 is arranged between the middle sliding plate 402 and the cracking shell 100, an inner sliding plate 404 is slidably connected inside the inner partition plate 104, and a third return spring 405 is arranged between the inner sliding plate 404 and the cracking shell 100.

[0040] The lower end of the outer sliding plate 400 is fixedly connected to an outer piston baffle 406, the lower end of the middle sliding plate 402 is fixedly connected to a middle piston baffle 407, and the lower end of the inner sliding plate 404 is fixedly connected to an inner piston baffle 408. The outer piston baffle 406, the middle piston baffle 407 and the inner piston baffle 408 are all slidably connected to the cracking shell 100. The curvature of the outer piston baffle 406 is the same as the curvature of the inner diameter of the cracking shell 100, the curvature of the middle piston baffle 407 is the same as the curvature of the inner diameter of the middle partition plate 103, and the curvature of the inner piston baffle 408 is the same as the curvature of the inner diameter of the inner partition plate 104.

[0041] The cracking shell 100, the middle partition plate 103 and the inner partition plate 104 are all provided with air outlets connected to the air inlet duct 201, and the width of the air outlets of the cracking shell 100, the middle partition plate 103 and the inner partition plate 104 is smaller than the width of the corresponding outer piston baffle 406, the middle piston baffle 407 and the inner piston baffle 408.

[0042] According to the above scheme, after the waste acrylic material filtered by the inner filter screen 510 enters the inner partition plate 104, it falls on the inner sliding plate 404, and the inner sliding plate 404 is driven to slide downward by the gravity of the waste acrylic material, thereby driving the inner piston baffle 408 to slide downward, so that the hot air blown by the hot air blower 200 to the inner partition plate 104 is no longer blocked by the inner piston baffle 408, and the third reset spring 405 is compressed according to the weight of the waste acrylic material on the inner sliding plate 404. The amount of hot air entering the inner partition plate 104 is adjusted, thereby controlling the heating temperature of the waste acrylic material on the inner sliding plate 404. Similarly, the second return spring 403 is compressed according to the weight of the waste acrylic material entering the middle sliding plate 402, thereby controlling the downward sliding distance of the middle piston baffle 407, and then controlling the amount of hot air entering between the middle partition plate 103 and the inner partition plate 104, thereby achieving the effect of controlling the heating temperature. Similarly, the heating temperature of the waste acrylic material on the outer sliding plate 400 can be controlled.

[0043] The working principle and use process of the present invention:

[0044] First, the operator adds the waste acrylic material into the feed port 102, and then starts the electric push rod 300 and the hot air blower 200, and drives the connecting transmission plate 301 to slide up and down through the electric push rod 300, so that the inner feed sliding tube 500 slides up and down. When the inner feed sliding tube 500 slides up to the feed port 102, the feed control tube 504 squeezes the feed sliding block 603, so that the sealed state between the feed sliding block 603 and the feed baffle 600 is released, and then the waste acrylic material in the feed port 102 slides into the inner feed sliding tube 500, and then the waste acrylic material slides onto the inner filter screen 510, and the waste acrylic material is filtered for the first time through the inner filter screen 510, and the filtered waste acrylic material is sent to the inner separation On the inner sliding plate 404 in the plate 104, the gravity of the waste acrylic material causes the inner sliding plate 404 to slide downward, thereby driving the inner piston baffle 408 to slide downward, so that the hot air channel on the inner wall of the inner partition plate 104 is no longer blocked by the inner piston baffle 408, so that the hot air generated by the hot air blower 200 enters the inner partition plate 104 through the air inlet duct 201, and the waste acrylic material on the inner sliding plate 404 is heated by the hot air. At the same time, the third return spring 405 is used to adjust the sliding distance of the inner piston baffle 408 according to the gravity of the waste acrylic material entering the inner sliding plate 404, thereby controlling the amount of hot air entering the inner partition plate 104, and thereby controlling the heating temperature of the waste acrylic material on the inner sliding plate 404.

[0045] When the first filtration of the waste acrylic material is completed, the inner feed sliding tube 500 is driven to continue to slide upwards by the connecting transmission plate 301, and the inner feed retaining tube 501 is driven to slide upwards synchronously by the fourth return spring 505, so that the inner feed retaining tube 501 is separated from the inner sliding ring 506, so that the waste acrylic material that has not been filtered on the inner filter screen 510 slides to the middle filter screen 509 through the inner sliding ring 506, and is filtered for the second time by the middle filter screen 509, and is filtered by the middle feed retaining tube 501. 2 is blocked on the middle filter screen 509, and the waste acrylic material filtered by the middle filter screen 509 enters between the middle partition plate 103 and the inner partition plate 104, and falls onto the middle sliding plate 402. Similarly, the middle sliding plate 402 is pressed to slide downward, driving the middle piston baffle 407 to slide synchronously, and the second return spring 403 controls the waste acrylic material to enter the hot air furnace between the middle partition plate 103 and the inner partition plate 104, thereby controlling the heating temperature of the waste acrylic material on the middle sliding plate 402.

[0046] As the connecting transmission plate 301 drives the inner feed sliding tube 500 to continue to slide upward, the connecting sliding plate 503 drives the middle feed baffle tube 502 to slide upward, and then the waste acrylic material that has been filtered twice slides into the cracking shell 100 and the middle partition plate 103 through the middle sliding ring 507, and falls onto the outer sliding plate 400. Similarly, the outer sliding plate 400 and the outer piston baffle 406 are squeezed to slide downward, opening the hot air channel on the inner wall of the cracking shell 100 blocked by the outer piston baffle 406. The size of the hot air channel is controlled by the first return spring 401 according to the weight of the waste acrylic material on the outer sliding plate 400, thereby controlling the heating temperature of the waste acrylic material on the outer sliding plate 400.

[0047] As the inner feed sliding tube 500 continues to slide upward, the feed sliding block 603 is squeezed again through the feed control tube 504 to feed the waste acrylic material in the feed port 102 into the inner feed sliding tube 500, and then the waste acrylic material is filtered again by the inner filter screen 510 and the middle filter screen 509.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste acrylic cracking temperature control device, comprising a cracking housing (100), characterized in that: A feed port (102) is fixedly connected to the cracking shell (100), a middle layer partition plate (103) is fixedly connected inside the cracking shell (100), an inner layer partition plate (104) is fixedly connected inside the cracking shell (100), an inner sliding ring (506) is fixedly connected to the upper end of the inner layer partition plate (104), a middle layer sliding ring (507) is fixedly connected to the upper end of the middle layer partition plate (103), a middle layer filter screen (509) is arranged between the inner sliding ring (506) and the middle layer sliding ring (507), an inner layer filter screen (510) is arranged inside the inner sliding ring (506), an electric push rod (300) is installed on the outer contour of the cracking shell (100), a connecting transmission plate (301) is fixedly connected to the upper end of the electric push rod (300), and a feed control structure is fixedly connected to the connecting transmission plate (301).

2. The waste acrylic cracking temperature control device according to claim 1, characterized in that: The feed control structure comprises an inner feed sliding tube (500) fixedly connected to a connecting transmission plate (301); the inner feed sliding tube (500) is slidably connected to an inner feed blocking tube (501); a feed control tube (504) is fixedly connected inside the inner feed sliding tube (500); a symmetrically distributed connecting sliding plate (503) is fixedly connected to the outer contour of the inner feed blocking tube (501); and the connecting sliding plate (503) is slidably connected to a middle-layer feed blocking tube (502).

3. The waste acrylic cracking temperature control device according to claim 2, characterized in that: The middle layer sliding ring (507) is fixedly connected with a symmetrically distributed middle layer filter screen (509), the middle layer filter screen (509) is slidably connected to the middle layer feed baffle tube (502), and the aperture of the inner layer filter screen (510) is smaller than the aperture of the middle layer filter screen (509).

4. The waste acrylic cracking temperature control device according to claim 3, characterized in that: A fourth return spring (505) is provided between the connecting transmission plate (301) and the inner feed retaining tube (501), the lower end of the middle feed retaining tube (502) is in contact with the middle sliding ring (507), and the lower end of the inner feed retaining tube (501) is in contact with the inner sliding ring (506).

5. The waste acrylic cracking temperature control device according to claim 1, characterized in that: The cracking shell (100) is fixedly connected to symmetrically distributed shell brackets (101), a hot air blower (200) is installed on one of the shell brackets (101), an air inlet duct (201) is fixedly connected to the hot air blower (200), the air inlet duct (201) is fixedly connected to the cracking shell (100), and the air inlet duct (201) is connected to the middle partition plate (103) and the inner partition plate (104).

6. The waste acrylic cracking temperature control device according to claim 5, characterized in that: An outer sliding plate (400) is slidably connected between the cracking shell (100) and the middle partition plate (103), a first return spring (401) is arranged between the outer sliding plate (400) and the cracking shell (100), a middle sliding plate (402) is slidably connected between the middle partition plate (103) and the inner partition plate (104), a second return spring (403) is arranged between the middle sliding plate (402) and the cracking shell (100), an inner sliding plate (404) is slidably connected inside the inner partition plate (104), and a third return spring (405) is arranged between the inner sliding plate (404) and the cracking shell (100).

7. The waste acrylic cracking temperature control device according to claim 6, characterized in that: The outer sliding plate (400) is fixedly connected to an outer piston baffle (406) at its lower end, the middle sliding plate (402) is fixedly connected to a middle piston baffle (407) at its lower end, and the inner sliding plate (404) is fixedly connected to an inner piston baffle (408) at its lower end. The outer piston baffle (406), the middle piston baffle (407) and the inner piston baffle (408) are all slidably connected to the cracking shell (100). The curvature of the outer piston baffle (406) is the same as the curvature of the inner diameter of the cracking shell (100), the curvature of the middle piston baffle (407) is the same as the curvature of the inner diameter of the middle partition plate (103), and the curvature of the inner piston baffle (408) is the same as the curvature of the inner diameter of the inner partition plate (104).

8. The waste acrylic cracking temperature control device according to claim 7, characterized in that: The cracking shell (100), the middle partition plate (103) and the inner partition plate (104) are all provided with air outlets connected to the air inlet duct (201), and the width of the air outlets of the cracking shell (100), the middle partition plate (103) and the inner partition plate (104) is smaller than the width of the corresponding outer piston baffle (406), the middle piston baffle (407) and the inner piston baffle (408).

9. The waste acrylic cracking temperature control device according to claim 2, characterized in that: A feed baffle (600) is fixedly connected inside the feed port (102), a fixed bracket (601) is fixedly connected inside the feed port (102) on the upper side of the feed baffle (600), a feed sliding block (603) is slidably connected inside the feed baffle (600), the feed sliding block (603) and the fixed bracket (601) are slidably connected through, and a fifth return spring (602) is arranged between the feed sliding block (603) and the fixed bracket (601).

10. The waste acrylic cracking temperature control device according to claim 9, characterized in that: The feed sliding block (603) is extruded and matched with the feed control tube (504), and the inner diameter of the feed port (102) is the same as the outer diameter of the inner feed sliding tube (500).

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