A recycling and processing device for engineering plastic building materials

Abstract

This invention relates to the field of engineering plastics processing equipment technology, and discloses an engineering plastics building material recycling and processing device, including a bidirectional crushing mechanism and a bidirectional linkage mechanism. Internally, it is equipped with a first bevel gear capable of driving the lower crushing roller to rotate, a second bevel gear capable of driving the upper crushing roller to rotate, and a third bevel gear capable of rotating with the rotor of the drive motor and driving the first and second bevel gears to rotate. This engineering plastics building material recycling and processing device, through a single drive source, achieves collision-type crushing of waste plastics around the same axis, thereby increasing the effective crushing area of ​​the plastics. Furthermore, the two crushing rollers of this device can run in opposite directions, thereby improving the crushing efficiency of the plastics.

Description

Technical Field

[0001] This invention relates to the field of engineering plastics processing equipment technology, specifically to an engineering plastics building materials recycling and processing device. Background Technology

[0002] As is well known, engineering plastic building material recycling and processing equipment is an auxiliary device used in the construction process to recycle waste plastic building materials so that they can be reprocessed into plastic products for reuse. It is widely used in the field of construction environmental protection.

[0003] For example, Chinese patent publication number "CN114670372A" discloses "An Engineering Plastic Building Material Recycling and Processing Device," whose main structure includes a device housing. Inside the housing, from top to bottom, there is a pre-crushing trough with an upper opening and a crushing and screening chamber. The inner bottom surface of the pre-crushing trough has a discharge trough communicating with the crushing and screening chamber. Two extrusion plates are symmetrically arranged front and rear within the pre-crushing trough. Multiple rows of crushing cones with multiple rows of conical holes are fixedly connected to opposite sides of the two extrusion plates. The number of crushing cones in one extrusion plate corresponds one-to-one with the number of conical holes in the other extrusion plate. This engineering plastic building material recycling and processing device, driven by a drive gear, transmission gear, and multiple gears, rotates the front and rear shafts. Simultaneously, the turntable rotates, indirectly causing the two extrusion plates to crush the engineering plastics relative to each other. This pre-crushes the engineering plastics using the crushing cones and conical holes. Then, two adjustable-gap crushing rollers further crush the engineering plastics, relieving crushing pressure and crushing them to the desired size.

[0004] In actual operation, the aforementioned engineering plastic building material recycling and processing device results in a large amount of waste plastic accumulating between the two extrusion plates. Under gravity, the amount of accumulated material will result in the bottom accumulation surface being larger than the top accumulation surface. Therefore, when the two extrusion plates extrude the waste plastic, it is difficult to completely crush all the plastic in the initial stage. In addition, when the two crushing rollers crush the plastic in the initial stage, their effective crushing surface is only the relative rotation area between the two crushing rollers. This area is narrow, thus resulting in low crushing efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an engineering plastic building material recycling and processing device. Using a single drive source, it achieves collision-type crushing of waste plastics around the same axis, thereby increasing the effective crushing area of ​​the plastics. Furthermore, the device's two crushing rollers can run in opposite directions, further improving the crushing efficiency of the plastics, thus solving the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an engineering plastic building material recycling and processing device, comprising a drive motor fixedly installed in a motor mounting base, and a bidirectional crushing mechanism, which internally includes a vertical crushing cylinder capable of limiting the flow of waste plastic, an upper crushing roller rotatably placed inside the vertical crushing cylinder and capable of impact crushing the waste plastic, and a lower crushing roller rotatably placed inside the vertical crushing cylinder and capable of impact crushing the waste plastic; and a bidirectional linkage mechanism, which internally includes a first bevel gear capable of driving the lower crushing roller to rotate, a second bevel gear capable of driving the upper crushing roller to rotate, and a third bevel gear capable of rotating with the rotor of the drive motor and driving the first and second bevel gears to rotate.

[0007] Preferably, the bidirectional crushing mechanism includes support legs for supporting the vertical crushing cylinder. The interior of the vertical crushing cylinder has a feeding chamber with an open top for feeding waste plastic. The bottom end of the feeding chamber has a dropping chamber for transferring the waste plastic downwards. The bottom end of the dropping chamber has a crushing chamber with an open bottom. A rotatable upper crushing roller is placed at the center of the crushing chamber. A rotatable lower crushing roller is mounted on the bottom of the upper crushing roller via a bearing. The top of the upper crushing roller has a first rotating shaft integrally formed with it and passing through the dropping chamber. The bottom center of the upper crushing roller has a concave shaft fixing groove. The outer circumference of the upper crushing roller has multiple upper crushing wings integrally formed with it for impact crushing of waste plastic. The outer circumference of the lower crushing roller has multiple lower crushing wings integrally formed with it for impact crushing of waste plastic. The center of the lower crushing roller has an upper shaft mounting hole with open ends.

[0008] Preferably, the radius of the first rotating shaft is smaller than the diameter of the drop chamber, and the gap between them is sufficient to allow the waste plastic to move downwards.

[0009] Preferably, the top of the upper crushing roller is provided with a conical protrusion structure to facilitate the downward movement of waste plastic.

[0010] Preferably, the bidirectional linkage mechanism includes a second rotating shaft integrally disposed on the upper end face of the first bevel gear, a third rotating shaft integrally disposed on the upper end face of the second bevel gear, a first docking plate fixedly installed at the bottom of the lower crushing roller at the top of the second rotating shaft, a lower shaft mounting hole with open ends and the top end connected to the upper shaft mounting hole at the shaft center of the second rotating shaft, the shaft of the third rotating shaft being mounted inside the lower shaft mounting hole by bearings, and a mounting shaft head integrally disposed on the top of the third rotating shaft and fixedly installed inside the shaft fixing groove, the tooth structure of the first bevel gear meshing with the teeth of the third bevel gear, the tooth structure of the second bevel gear meshing with the teeth of the third bevel gear, a fourth rotating shaft integrally disposed at one end of the third bevel gear, and the end of the fourth rotating shaft being connected to the rotor of the drive motor through the second docking plate.

[0011] Preferably, the meshing portions of the first and third bevel gears are arranged symmetrically with the meshing portions of the second and third bevel gears.

[0012] Preferably, it also includes a linkage dust suppression mechanism, which is internally equipped with a water injection pipe fixedly installed at the center of the feeding chamber and is hollow inside, a spiral blade placed inside the water injection pipe and causing the liquid around it to move downward, a fifth rotating shaft that can rotate with the first rotating shaft and drive the spiral blade to rotate, a spray head that sprays the liquid into the feeding chamber in an atomized form, and a buffer air film that can buffer the liquid.

[0013] Preferably, the linkage dust suppression mechanism includes a fixed hollow frame disposed on the outer periphery of the bottom of the water injection pipe and fixedly installed on the inner circumference of the feeding chamber. The water injection pipe has a liquid compression chamber inside. The top of the liquid compression chamber has a pipe docking port that can be connected to an external drain pipe. The bottom of the liquid compression chamber has a liquid reserve chamber to facilitate the flow of liquid to the surrounding area. The bottom of the liquid reserve chamber has a central shaft mounting hole with both ends open. The water injection pipe has multiple horizontal liquid discharge chambers around the liquid reserve chamber. The bottom of the water injection pipe has multiple spray heads for discharging liquid inside the liquid discharge chambers. Each liquid discharge chamber has a buffer gas film installed on its top. A rotatable No. 5 rotating shaft is installed inside the central shaft mounting hole of the water injection pipe through a bearing and a sealing ring. The bottom of the No. 5 rotating shaft is connected to the top of the No. 1 rotating shaft through a No. 3 docking plate. The No. 5 rotating shaft has a spiral blade at the shaft inside the liquid compression chamber.

[0014] Preferably, the edge structure of the buffer gas film is embedded in the interior of the water injection pipe in a sealed manner, and when the buffer gas film is subjected to liquid pressure, it can expand upward.

[0015] Preferably, after being driven by the drive motor, the rotation of the spiral blades, under the linkage effect, causes the surrounding liquid to have a downward movement tendency.

[0016] Compared with the prior art, the present invention provides an engineering plastic building material recycling and processing device, which has the following beneficial effects: By using a single drive source, the device achieves impact crushing of waste plastics around the same axis, thereby increasing the effective crushing area of ​​the plastics. In addition, the two crushing rollers of the device can run in opposite directions, thereby improving the crushing efficiency of the plastics. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the present invention; Figure 3 This is a perspective view of the bidirectional crushing mechanism in this invention; Figure 4 This is a three-dimensional cross-sectional view of the bidirectional crushing mechanism in this invention; Figure 5 This is a perspective view of the bidirectional linkage mechanism in this invention; Figure 6 This is a three-dimensional cross-sectional view of the bidirectional linkage mechanism in this invention; Figure 7 This is a perspective view of the linkage dust suppression mechanism in this invention; Figure 8 This is a three-dimensional cross-sectional view of the linkage dust suppression mechanism in this invention.

[0018] The components include: 1. Motor mounting base; 2. Drive motor; 3. Bidirectional crushing mechanism; 31. Vertical crushing cylinder; 32. Support leg; 33. Feeding chamber; 34. Drop chamber; 35. Crushing chamber; 36. Upper crushing roller; 37. Lower crushing roller; 38. Upper crushing wing; 39. Lower crushing wing; 310. Upper shaft mounting hole; 311. Shaft fixing groove; 312. No. 1 rotating shaft; 4. Bidirectional linkage mechanism; 41. No. 2 rotating shaft; 42. Lower shaft mounting hole; 43. No. 1 connecting plate; 44. No. 3 rotating shaft; 45. Shaft head installation; 46. Bevel gear No. 1; 47. Bevel gear No. 2; 48. Bevel gear No. 3; 49. No. 2 docking plate; 410. No. 4 rotating shaft; 5. Linked dust suppression mechanism; 51. Water injection pipe; 52. Fixed hollow frame; 53. Liquid compression chamber; 54. Pipe docking port; 55. Liquid reserved chamber; 56. Central shaft mounting hole; 57. No. 5 rotating shaft; 58. No. 3 docking plate; 59. Liquid discharge chamber; 510. Buffer air film; 511. Spray head; 512. Spiral blade. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1 and Figure 2 An engineering plastic building material recycling and processing device includes a drive motor 2 fixedly installed in a motor mounting base 1, the motor mounting base 1 and support leg 32 are fixedly installed in the working area, and the drain port of a water supply pipe is connected to the pipe docking port 54.

[0021] To achieve bidirectional impact crushing of waste plastics, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 and Figure 4 A bidirectional crushing mechanism 3 is required, which includes a vertical crushing cylinder 31 for limiting the flow of waste plastic, an upper crushing roller 36 rotatably mounted inside the vertical crushing cylinder 31 for impact crushing of waste plastic, and a lower crushing roller 37 rotatably mounted inside the vertical crushing cylinder 31 for impact crushing of waste plastic. Waste plastic is fed into the feeding chamber 33, and under its own gravity, the plastic enters the crushing chamber 35. The rotating upper crushing roller 36 and lower crushing roller 37 drive the upper crushing fins 38 and lower crushing fins 39 to rotate, respectively. When the plastic encounters the high-speed rotating upper crushing fin 38, it is crushed for the first time. The plastic crushed in the first stage will spiral downward under the impact of gravity and the upper crushing fin 38. When the spiraling downward plastic encounters the lower crushing fin 39 rotating in the opposite direction, it will be crushed again. At the same time, because the movement direction is opposite, the impact force is stronger during the second crushing. Therefore, the crushing effect and efficiency will be gradually improved, thereby realizing bidirectional impact crushing of waste plastic.

[0022] For the specific structure of the bidirectional crushing mechanism 3, please refer to [link / reference]. Figure 3 and Figure 4The system includes support legs 32 for supporting the vertical crushing cylinder 31. The vertical crushing cylinder 31 has an internal feeding chamber 33 with an open top for feeding waste plastics. The bottom end of the feeding chamber 33 has a dropping chamber 34 for downward transfer of the waste plastics. The bottom end of the dropping chamber 34 has a crushing chamber 35 with an open bottom. A rotatable upper crushing roller 36 is placed at the center of the crushing chamber 35. A rotatable lower crushing roller 37 is mounted on the bottom of the upper crushing roller 36 via a bearing. The top end of the upper crushing roller 36 has a first rotating shaft 312 integrally formed with it and passing through the dropping chamber 34. An inner... The upper crushing roller 36 has a concave shaft fixing groove 311. Multiple upper crushing wings 38, integrally formed with the upper crushing roller 36 and used for impact-type crushing of waste plastic, are provided on its outer circumferential surface. The lower crushing roller 37 has multiple lower crushing wings 39, integrally formed with the lower crushing roller 37 and used for impact-type crushing of waste plastic, on its outer circumferential surface. The lower crushing roller 37 has an upper shaft mounting hole 310 with open ends at its center. The shaft radius of the first rotating shaft 312 is smaller than the diameter of the drop chamber 34, and the gap between them is sufficient to allow the waste plastic to move downwards. The top of the upper crushing roller 36 has a conical protrusion structure to facilitate the downward movement of the waste plastic. To achieve coaxial and reverse linkage, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 5 and Figure 6 A bidirectional linkage mechanism 4 needs to be set up, which contains a first bevel gear 46 that can drive the lower crushing roller 37 to rotate, a second bevel gear 47 that can drive the upper crushing roller 36 to rotate, and a third bevel gear 48 that can rotate with the rotor of the drive motor 2 and drive the first bevel gear 46 and the second bevel gear 47 to rotate. When the drive motor 2 is started, the rotor will drive the first bevel gear 46 and the second bevel gear 47 to rotate synchronously through the third bevel gear 48. Since the gear meshing parts of the first bevel gear 46 and the third bevel gear 48 are arranged symmetrically above and below, the first bevel gear 46 and the second bevel gear 47 will rotate synchronously and in opposite directions. The first bevel gear 46 and the second bevel gear 47 will then drive the lower crushing roller 37 and the upper crushing roller 36 to rotate synchronously and in opposite directions, thereby realizing coaxial and reverse linkage.

[0023] For the specific structure of the bidirectional linkage mechanism 4, please refer to [link / reference]. Figure 5 and Figure 6, including a second rotating shaft 41 integrally provided on the upper end surface of the first bevel gear 46. A third rotating shaft 44 with an integrally formed structure is provided on the upper end surface of the second bevel gear 47. The top of the second rotating shaft 41 is provided with a first docking plate 43 fixedly installed at the bottom of the lower crushing roller 37. A lower shaft installation hole 42 with openings at both ends and its top communicating with the upper shaft body placement hole 310 is provided at the axis of the second rotating shaft 41. The shaft body of the third rotating shaft 44 is installed inside the lower shaft installation hole 42 through a bearing. The top of the third rotating shaft 44 is provided with an installation shaft head 45 with an integrally formed structure and fixedly installed inside the shaft body fixing groove 3,11. The tooth structure of the first bevel gear 46 meshes with the tooth structure of the third bevel gear 48. The tooth structure of the second bevel gear 47 meshes with the tooth structure of the third bevel gear 48. One end of the third bevel gear 48 is provided with a fourth rotating shaft 410 with an integrally formed structure. The end of the fourth rotating shaft 410 is docked with the rotor of the drive motor 2 through a second docking plate 49. The gear meshing part of the first bevel gear 46 and the third bevel gear 48 and the gear meshing part of the second bevel gear 47 and the third bevel gear 48 are in an upper and lower symmetric layout.

[0024] In order to achieve a dust removal effect in the linkage state, please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8 , it is necessary to set up a linkage dust reduction mechanism 5, which internally has a water injection pipe 51 fixedly installed at the center of the feeding chamber 33 and hollow inside, a spiral blade 512 placed inside the water injection pipe 51 and capable of making the liquid around it tend to move downward, a fifth rotating shaft 57 that can rotate with the first rotating shaft 312 and drive the spiral blade 512 to rotate, a spray head 511 that sprays the liquid into the feeding chamber 33 in an atomized form, and a buffer air film 510 that can buffer the liquid. The rotating first rotating shaft 312 will drive the spiral blade 512 to rotate. When the spiral blade 512 rotates, it will make the liquid around it tend to move downward. The liquid will enter the inside of the liquid discharge chamber 59 under a certain pressure. Finally, the liquid will be sprayed into the feeding chamber 33 in an atomized form through each spray head 511, thereby achieving a dust removal effect on the dust generated during the crushing process, and thus achieving a dust removal effect in the linkage state.

[0025] Regarding the specific structure of the linkage dust reduction mechanism 5, please refer to Figure 7 and Figure 8The system includes a fixed perforated frame 52 located on the outer periphery of the bottom of the water injection pipe 51 and fixedly installed on the inner circumference of the feeding chamber 33. The water injection pipe 51 contains a liquid compression chamber 53. The top of the liquid compression chamber 53 has a pipe connection port 54 for connecting with an external drain pipe. The bottom of the liquid compression chamber 53 has a liquid reserve chamber 55 to facilitate liquid flow. The bottom of the liquid reserve chamber 55 has a central shaft mounting hole 56 with both ends open. The water injection pipe 51 has multiple horizontal liquid discharge chambers 59 around the liquid reserve chamber 55. The bottom of the water injection pipe 51 has multiple spray heads 511 for discharging liquid from the liquid discharge chambers 59. Each of the liquid discharge chambers... A buffer gas film 510 is installed on the top of each cavity 59. A rotatable No. 5 rotating shaft 57 is installed inside the central shaft mounting hole 56 of the water injection pipe 51 through bearings and sealing rings. The bottom end of the No. 5 rotating shaft 57 is connected to the top end of the No. 1 rotating shaft 312 through the No. 3 docking plate 58. The No. 5 rotating shaft 57 is provided with a spiral blade 512 at the shaft located inside the liquid compression chamber 53. The edge structure of the buffer gas film 510 is embedded in the interior of the water injection pipe 51 in a sealed form. When the buffer gas film 510 is subjected to liquid pressure, it can produce an upward expansion phenomenon. After the drive motor 2 drives it, under the linkage effect, the rotation of the spiral blade 512 causes the liquid around it to have a downward movement tendency.

[0026] In use, the motor mounting base 1 and support leg 32 are fixedly installed in the working area, and the drain port of a water supply pipe is connected to the pipe connection port 54. The drive motor 2 is started, and the rotor drives the first bevel gear 46 and the second bevel gear 47 to rotate synchronously via the third bevel gear 48. Because the meshing parts of the first bevel gear 46 and the third bevel gear 48 are symmetrically arranged, the first bevel gear 46 and the second bevel gear 47 will rotate synchronously and in opposite directions. The first bevel gear 46 and the second bevel gear 47 will then drive the lower crushing roller 37 and the upper... The crushing roller 36 rotates synchronously and in opposite directions, feeding waste plastic into the feeding chamber 33. Under its own gravity, the plastic enters the crushing chamber 35. The rotating upper crushing roller 36 and lower crushing roller 37 drive the upper crushing fins 38 and lower crushing fins 39 to rotate, respectively. When the plastic encounters the high-speed rotating upper crushing fin 38, it will be crushed for the first time. The plastic crushed in the first stage will move in a spiral downward direction under the impact of gravity and the upper crushing fin 38. When the spiraling downward plastic encounters the lower crushing fin 39 with the opposite rotation direction, it will be crushed again. At the same time, due to the opposite direction of movement, the secondary crushing has the characteristic of stronger impact force. Finally, the plastic particles will be discharged downward.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A recycling and processing device for engineering plastic building materials, comprising a drive motor (2) fixedly installed in a motor mounting base (1), characterized in that: It also includes a bidirectional crushing mechanism (3) and a bidirectional linkage mechanism (4). The bidirectional crushing mechanism (3) includes a vertical crushing cylinder (31) for limiting the flow of waste plastic, an upper crushing roller (36) rotatably placed inside the vertical crushing cylinder (31) for impact crushing of waste plastic, and a lower crushing roller (37) rotatably placed inside the vertical crushing cylinder (31) for impact crushing of waste plastic. The bidirectional linkage mechanism (4) includes a first bevel gear (46) for driving the lower crushing roller (37) to rotate, a second bevel gear (47) for driving the upper crushing roller (36) to rotate, and a third bevel gear (48) for rotating with the rotor of the drive motor (2) and driving the first bevel gear (46) and the second bevel gear (47) to rotate. The bidirectional crushing mechanism (3) also includes a support leg (32) for supporting the vertical crushing cylinder (31). The vertical crushing cylinder (31) has a feeding chamber (33) with an open top for feeding waste plastic. The bottom end of the feeding chamber (33) is provided with a dropping chamber (34) for transferring waste plastic downwards. The bottom end of the dropping chamber (34) is provided with a crushing chamber (35) with an open bottom. A rotatable upper crushing roller (36) is placed at the center of the crushing chamber (35). A rotatable lower crushing roller (37) is installed at the bottom of the upper crushing roller (36) through a bearing. The top of the upper crushing roller (36) is provided with a first rotating shaft (312) that is integral with it and passes through the drop cavity (34). The bottom center of the upper crushing roller (36) is provided with a shaft fixing groove (311) with an inward structure. The outer circumferential surface of the upper crushing roller (36) is provided with multiple upper crushing wings (38) that are integral with it and are used for collision crushing of waste plastics. The outer circumferential surface of the lower crushing roller (37) is provided with multiple lower crushing wings (39) that are integral with it and are used for collision crushing of waste plastics. The center of the lower crushing roller (37) is provided with an upper shaft mounting hole (310) with both ends open. The radius of the shaft of the first rotating shaft (312) is smaller than the diameter of the falling cavity (34), and the gap between the two is sufficient to allow the waste plastic to move downward. The top of the upper crushing roller (36) is provided with a conical protrusion structure to facilitate the downward movement of waste plastic; The bidirectional linkage mechanism (4) also includes a second rotating shaft (41) integrally disposed on the upper end face of the first bevel gear (46). The upper end face of the second bevel gear (47) is provided with a third rotating shaft (44) integrally disposed therewith. The top end of the second rotating shaft (41) is provided with a first docking plate (43) fixedly installed at the bottom of the lower crushing roller (37). The shaft center of the second rotating shaft (41) is provided with a lower shaft mounting hole (42) with both ends open and the top end connected to the upper shaft mounting hole (310). The shaft of the third rotating shaft (44) is mounted in the lower shaft mounting hole (42) by bearings. Inside the third shaft (44), the top end of the third shaft (44) is provided with an installation shaft head (45) which is integral with it and fixedly installed inside the shaft fixing groove (311). The tooth structure of the first bevel gear (46) meshes with the tooth structure of the third bevel gear (48). The tooth structure of the second bevel gear (47) meshes with the tooth structure of the third bevel gear (48). One end of the third bevel gear (48) is provided with a fourth shaft (410) which is integral with it. The end of the fourth shaft (410) is connected to the rotor of the drive motor (2) through the second docking plate (49). It also includes a linkage dust suppression mechanism (5), which is equipped with a water injection pipe (51) fixedly installed at the center of the feeding chamber (33) and hollow inside, a spiral blade (512) placed inside the water injection pipe (51) and causing the liquid around it to move downward, a fifth rotating shaft (57) that rotates with the first rotating shaft (312) and drives the spiral blade (512) to rotate, a spray head (511) that sprays the liquid into the feeding chamber (33) in the form of atomization, and a buffer air film (510) for buffering the liquid. The linkage dust suppression mechanism (5) also includes a fixed hollow frame (52) located on the bottom periphery of the water injection pipe (51) and fixedly installed on the inner circumference of the feeding chamber (33). The water injection pipe (51) has a liquid compression chamber (53) inside. The top of the liquid compression chamber (53) has a pipe connection port (54) for connecting with an external drainage pipe. The bottom of the liquid compression chamber (53) has a liquid reserve chamber (55) to facilitate liquid flow to all sides. The bottom of the liquid reserve chamber (55) has a central shaft mounting hole (56) with both ends open. The liquid reserve chamber (55) is surrounded by... Multiple horizontal liquid discharge chambers (59) are provided. The bottom of the water injection pipe (51) is provided with multiple spray heads (511) for discharging liquid inside the liquid discharge chambers (59). A buffer gas film (510) is installed on the top of each liquid discharge chamber (59). A rotatable No. 5 rotating shaft (57) is installed inside the central shaft mounting hole (56) of the water injection pipe (51) through bearings and sealing rings. The bottom end of the No. 5 rotating shaft (57) is connected to the top end of the No. 1 rotating shaft (312) through the No. 3 docking plate (58). A spiral blade (512) is provided on the shaft of the No. 5 rotating shaft (57). The edge structure of the buffer gas membrane (510) is embedded in the interior of the water injection pipe (51) in a sealed form. When the buffer gas membrane (510) is subjected to liquid pressure, it expands upward. After the drive motor (2) is driven, under the linkage effect, the rotation of the spiral blade (512) causes the liquid around it to move downward.

2. The engineering plastic building material recycling and processing device according to claim 1, characterized in that: The meshing parts of the first bevel gear (46) and the third bevel gear (48) are arranged symmetrically above and below with the meshing parts of the second bevel gear (47) and the third bevel gear (48).

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