Jet mill device for producing PBS modified plastic master batch and production process of PBS modified plastic master batch

Abstract

The invention discloses a jet mill device for PBS modified plastic master batch production, the jet mill device comprises a jet assembly, a transmission assembly and a shunting assembly, the shunting assembly is used for screening, blocking, shunting and blocking prevention of plastic master batches, and the shunting assembly comprises a toothed plate which is fixedly connected to one side of a grading wheel and is rotatably connected with an air exhaust swirler; the invention also provides a production process of the PBS modified plastic master batch. The production process comprises the following steps: S1, preparing the PBS resin, the modifier, the pigment, the dispersant and other raw materials; s2, preliminarily mixing the PBS resin, the modifier, the pigment and other raw materials; s4, shunting and collecting; s5, granulating and drying; and S6, quality monitoring and packaging. According to the device, redundant materials are effectively pushed to be scattered out of the grading wheel through swinging of the baffle in the grading wheel, excessive accumulation of the materials in the grading wheel is avoided, and the materials of which the sizes do not reach the standard are blocked and shunted through the baffle, so that the materials continue to stay in the grading wheel for further grinding.

Description

Technical Field

[0001] The invention relates to the technical field of air flow mill devices, in particular to an air flow mill device for producing PBS modified plastic masterbatch and a production process thereof. Background Art

[0002] The jet mill for plastic masterbatch production is a device used to crush and refine plastic raw materials. This device usually uses jet mill technology to crush the material through high-speed airflow to produce fine particles or powder for the preparation of plastic masterbatch.

[0003] For the current airflow mill device, such as the airflow mill device for producing plastic masterbatch disclosed in the Chinese patent publication number "CN118372398A", when the airflow mill crushes and grinds the material, the material is directly transported after the classifying wheel after grinding one circle, which easily leads to insufficient grinding of the material in the airflow mill, and material accumulation inside the airflow mill and the classifying wheel, which makes it easier for the internal material to not be fully ground, so that the prepared plastic masterbatch cannot meet the required standards. Accordingly, the present application proposes an airflow mill device for producing PBS modified plastic masterbatch and its production process. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a jet mill device for producing PBS modified plastic masterbatch and a production process thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A jet mill device for producing PBS modified plastic masterbatch, comprising an air jet component, a transmission component and a flow splitter component, characterized in that: The transmission assembly is used to continuously convey and heat the plastic material, and the transmission assembly includes a preparation tank, a support frame fixedly connected to one side of the preparation tank, and a motor fixedly connected to the top of the support frame; An air extraction vortex flow device is fixedly connected to the interior of the preparation tank, and a classifying wheel is rotatably connected between one side of the air extraction vortex flow device and the inner wall of the preparation tank; The shunting device is used to screen, block and shunt plastic masterbatches and to prevent shunting and blocking. The shunting component includes a toothed plate fixedly connected to one side of the classifying wheel and rotatably connected with the exhaust vortex device, and the inner side of the exhaust vortex device is rotatably connected with the third gear. One side of the exhaust vortex device is fixedly connected with two fixed blocks, and a blocking plate is rotatably connected between the two fixed blocks, and the top of the blocking plate is fixedly connected with a fourth gear. The inner side of one of the fixed blocks is rotatably connected with a second reciprocating screw, and the second reciprocating screw is fixedly connected with the third gear. The second reciprocating screw is threadedly sleeved with a second screw nut, and the bottom of the second screw nut is fixedly connected with a sliding rod, and the second fixed plate is fixedly connected with the second fixed plate below the second reciprocating screw and between the exhaust vortex device, and the second fixed plate is rotatably connected with a fan-shaped tooth, and a sliding groove is provided on the fan-shaped tooth, and the sliding rod is slidably connected with the sliding groove. The jet assembly is used to perform air flow crushing and grinding on plastic materials. The jet assembly includes four air inlet pipes fixedly connected to the preparation tank, one end of the four air inlet pipes is fixedly connected to a ventilation pipe, the ventilation pipe is fixedly connected to an air inlet joint, and the other ends of the four air inlet pipes and located inside the preparation tank are fixedly connected to jet heads.

[0006] Preferably, one side of the preparation tank is rotatably connected to a first gear, a transmission shaft is fixedly connected to the first gear, the driving end of the motor is connected to the transmission shaft by a synchronous belt, the side of the preparation tank close to the first gear is rotatably connected to a second gear, the second gear is fixedly connected to a first bevel gear, two first fixed plates are fixedly connected to one side of the preparation tank, a first reciprocating screw is rotatably connected between the two first fixed plates, a first screw nut is threadedly sleeved on the first reciprocating screw, the top of the first reciprocating screw is fixedly connected to the second bevel gear, and a heating component for lightly preheating unprocessed plastic materials to deepen the softening degree is provided on the first screw nut.

[0007] Preferably, the heating assembly includes a push rod fixedly connected to the first screw nut, a piston fixedly connected to the bottom of the push rod, a water tank fixedly connected to the outside of the preparation tank, a heating box fixedly connected to the outside of the preparation tank, a water inlet pipe fixedly connected between the heating box and the water tank, a feed orifice plate fixedly connected to the preparation tank, a heating tube wrapped around the feed orifice plate fixedly connected to the water tank, and an output port of the heating tube fixedly connected to the heating box.

[0008] Preferably, an exhaust port is fixedly connected to the top of the preparation tank, a material extraction port communicating with the exhaust vortex finder is fixedly connected to one side of the preparation tank, and the classifying wheel is fixedly connected to the transmission shaft.

[0009] Preferably, a plurality of grading holes are provided on the baffle plate, the diameter of the grading holes is smaller than the diameter of the openings on the grading wheel, and the slide groove is an arc-shaped groove hole.

[0010] Preferably, a plurality of heating holes are provided on the feed orifice plate opening, and the feed orifice plate opening is made of a fast heat-conducting material.

[0011] Preferably, a one-way valve is provided inside the heating tube, which is unidirectionally directed toward the heating box, and a one-way valve is provided inside the water inlet pipe, which is unidirectionally directed toward the inside of the water tank.

[0012] The present invention also provides a production process of PBS modified plastic masterbatch, which adopts the above-mentioned air jet mill device for producing PBS modified plastic masterbatch for grinding, and comprises the following steps: S1. Prepare raw materials: prepare PBS resin, modifier, pigment, dispersant and other raw materials, and ensure the purity and quality of the raw materials to avoid affecting the performance of the final product; S2. Premixing of raw materials: Preliminary mixing of raw materials such as PBS resin, modifier and pigment, and ensuring uniform distribution of raw materials during mixing to improve the efficiency of subsequent crushing and granulation; S3, air flow mill grinding: the pre-mixed raw materials are fed into the air flow mill through the feed orifice. At this time, the raw materials in the process of transportation are slightly preheated by the heating tube outside the feed orifice to deepen the softening degree of the raw materials. Then, the raw materials are crushed at high speed with the help of compressed air or other fluids as the working medium. During the crushing process, strong impact, collision and friction shear will occur between the particles and between the particles and the wall of the classifying wheel, so that the raw materials are crushed to the required particle size. S4, diversion and collection: The crushed materials are collected outside through the exhaust vortex flow device inside the classifying wheel. At this time, the insufficiently ground materials are diverted by the classifying wheel and the diversion component and returned to the classifying wheel and the preparation tank for re-grinding. The qualified fine powder enters the cyclone separator with the air flow and is collected. The dust-containing gas is filtered and purified by the bag dust collector and then discharged into the atmosphere; S5, granulation and drying: the collected fine powder is sent to the granulator for granulation, and the uniformity and integrity of the particles must be ensured during the granulation process. Finally, the granulated particles need to be dried to remove moisture and volatile substances; S6. Quality monitoring and packaging: The PBS modified plastic masterbatch after granulation is subjected to quality inspection, including particle size, color, dispersibility and other indicators. Finally, the qualified masterbatch is packaged and labeled for subsequent use.

[0013] The present invention has the following beneficial effects: 1. By setting a transmission component and a heating component, the transmission shaft can be driven by a motor to drive the synchronous belt to rotate, the transmission shaft drives the first gear to rotate, the first gear pushes the second gear to rotate, the second gear drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the first reciprocating screw to rotate. At this time, the first reciprocating screw rotates to drive the first screw nut thereon to push the piston along the inside of the water tank through the push rod to perform piston movement. When the piston squeezes the water inside the water tank inward, the hot water is squeezed into the inside of the heating tube. At this time, the hot water surrounds the feed orifice plate through the heating tube to heat the inside of the feed orifice plate, and then flows back to the inside of the heating box. When the piston draws the water inside the water tank outward, the hot water is drawn out from the inside of the heating box through the water inlet pipe to the inside of the water tank through the atmospheric pressure, and then the material passing through the inside of the feed orifice plate is continuously slightly heated and softened by the water temperature.

[0014] 2. By setting up the jet assembly and the diversion assembly, the jet can be guided to the inside of the ventilation pipe through the air intake joint, and then diverted into the inside of the preparation tank through four air intake pipes. The airflow is ejected from the four jet heads inside the preparation tank. At this time, the material is put into the preparation tank through the feed orifice. After the material is heated and softened, it is transmitted upward through the jet airflow. The motor drives the transmission shaft and the grading wheel on it to rotate through the synchronous belt. The rotation of the grading wheel drives the toothed plate to rotate along the inside of the air extraction vortex device. The toothed plate drives the third gear and the second reciprocating screw on it to rotate. At this time, the second reciprocating screw The second lead screw nut on the lead screw drives the sliding rod to slide back and forth along the sliding groove, which can push the sector-shaped teeth to reciprocate around the second fixed plate, and then push the fourth gear and the blocking plate fixedly connected thereto to swing back and forth through the sector-shaped teeth. Finally, not only does the blocking plate swing inside the grading wheel to push excess material out of the grading wheel, but the blocking plate also blocks and diverts materials that do not meet the size standards, so that they continue to stay inside the grading wheel for further grinding. When the material is crushed and ground inside the grading wheel, it is continuously sucked out through the suction port by the exhaust vortex device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of a jet mill device for producing PBS modified plastic masterbatch and its production process proposed by the present invention; Figure 2 It is a schematic diagram of the structure inside the preparation tank in the present invention; Figure 3 It is a schematic diagram of the structure inside the grading wheel of the present invention; Figure 4 It is a schematic diagram of the structure inside the air extraction vortex finder of the present invention; Figure 5 It is a structural schematic diagram of the diversion component in the present invention; Figure 6 for Figure 1 Schematic diagram of the enlarged structure of A.

[0016] In the figure: 1 preparation tank, 2 air inlet pipe, 3 ventilation pipe, 4 air inlet joint, 5 jet head, 6 first gear, 7 transmission shaft, 8 second gear, 9 first bevel gear, 10 first fixed plate, 11 first reciprocating screw, 12 first screw nut, 13 second bevel gear, 14 support frame, 15 motor, 16 synchronous belt, 17 push rod, 18 piston, 19 water tank, 20 heating box, 21 feed orifice, 22 heating pipe, 23 water inlet pipe, 24 air extraction vortex device, 25 grading wheel, 26 tooth plate, 27 third gear, 28 fixed block, 29 baffle plate, 30 fourth gear, 31 second reciprocating screw, 32 second screw nut, 33 slide rod, 34 second fixed plate, 35 fan-shaped teeth, 36 slide groove, 37 exhaust port, 38 extraction port. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Embodiment 1

[0018] Reference Figure 1-Figure 2 and Figure 6 , a jet mill device for producing PBS modified plastic masterbatch, comprising: a jet assembly, a transmission assembly and a flow splitter assembly; The transmission assembly is used to continuously convey and heat the plastic material, and the transmission assembly includes a preparation tank 1, a support frame 14 fixedly connected to one side of the preparation tank 1, and a motor 15 fixedly connected to the top of the support frame 14; An exhaust vortex flow device 24 is fixedly connected to the inside of the preparation tank 1, and a classifying wheel 25 is rotatably connected between one side of the exhaust vortex flow device 24 and the inner wall of the preparation tank 1. The classifying wheel 25 is used to classify the material inside the preparation tank 1 and provide the material to impact and polish the wall; The shunt assembly is used for screening, blocking and shunt-preventing plastic masterbatch. The shunt assembly includes a tooth plate 26 fixedly connected to one side of the grading wheel 25 and rotatably connected to the exhaust vortex generator 24. A third gear 27 is rotatably connected to one side of the exhaust vortex generator 24 near the tooth plate 26. Two fixed blocks 28 are fixedly connected to one side of the exhaust vortex generator 24. A baffle plate 29 is rotatably connected between the two fixed blocks 28. The baffle plate 29 can filter and block oversized material particles to prevent them from being directly fed to the outside. A fourth gear 30 is fixedly connected to the top of the baffle plate 29. A second reciprocating screw 31 is rotatably connected to the inside of a fixed block 28. The second reciprocating screw 31 and the third gear 30 are rotatably connected to each other. The second reciprocating screw 31 is fixedly connected with the second lead screw nut 32, and the bottom of the second lead screw nut 32 is fixedly connected with the slide bar 33. A second fixed plate 34 is fixedly connected to the lower part of the second reciprocating screw 31 and between the exhaust vortex finder 24. The second fixed plate 34 is rotatably connected with the fan-shaped teeth 35. The fan-shaped teeth 35 can synchronously drive the fourth gear 30 to reciprocate at a certain angle. The fan-shaped teeth 35 are provided with a slide groove 36. The slide bar 33 is slidably connected with the slide groove 36. The setting of the slide groove 36 can enable the second lead screw nut 32 to push the slide bar 33 to slide back and forth therein, and then the reciprocating sliding of the slide bar 33 pushes the fan-shaped teeth 35 to reciprocate in an arc. The jet assembly is used for air flow crushing and grinding of plastic materials. The jet assembly includes four air inlet pipes 2 fixedly connected to the preparation tank 1, one end of the four air inlet pipes 2 is fixedly connected to a ventilation pipe 3, the ventilation pipe 3 is fixedly connected to an air inlet joint 4, and the other ends of the four air inlet pipes 2 and located inside the preparation tank 1 are fixedly connected to a jet head 5.

[0019] In this embodiment, the air inlet joint 4 guides the air flow to the inside of the vent pipe 3, and then the air flow is divided into the inside of the preparation tank 1 through the four air inlet pipes 2. The air flow is ejected from the four air jets 5 inside the preparation tank 1. At this time, the material is put into the preparation tank 1 through the feed orifice 21. After the material is heated and softened, it is transmitted upward by the air jet to the inside of the classifying wheel 25 for unified crushing and grinding. At the same time, the transmission shaft 7 drives the classifying wheel 25 thereon to rotate along the inside of the exhaust vortex flow device 24. The rotation of the classifying wheel 25 drives the toothed plate 26 to rotate along the inside of the exhaust vortex flow device 24. The toothed plate 26 pushes the third gear 27 and the second reciprocating screw 31 thereon to rotate. At this time, the second screw nut 32 on the second reciprocating screw 31 drives the sliding rod 33 to slide reciprocatingly along the sliding groove 36, which can push the fan-shaped tooth 35 to reciprocate around the second fixed plate 34, and then push the fourth gear 30 and the blocking plate 29 fixedly connected thereto to swing back and forth through the fan-shaped tooth 35. Finally, not only does the blocking plate 29 swing inside the classifying wheel 25 to push the excess material out of the classifying wheel 25, but the blocking plate 25 also blocks and diverts the material that does not meet the size standard, so that it continues to stay inside the classifying wheel 25 for further grinding, which can efficiently divert and re-grind the plastic masterbatch, greatly improving the work efficiency and yield rate. Embodiment 2

[0020] Further, see Figure 2-Figure 5 Compared with the first embodiment, in the present embodiment, one side of the preparation tank 1 is rotatably connected with a first gear 6, a transmission shaft 7 is fixedly connected to the first gear 6, a driving end of the motor 15 is connected to the transmission shaft 7 via a synchronous belt 16, a side of the preparation tank 1 close to the first gear 6 is rotatably connected with a second gear 8, a first bevel gear 9 is fixedly connected to the second gear 8, two first fixed plates 10 are fixedly connected to one side of the preparation tank 1, a first reciprocating screw 11 is rotatably connected between the two first fixed plates 10, a first screw nut 12 is threadedly sleeved on the first reciprocating screw 11, a second bevel gear 13 is fixedly connected to the top of the first reciprocating screw 11, and a heating component for slightly preheating the unprocessed plastic material to deepen the softening degree is provided on the first screw nut 12; In this embodiment, after starting the motor 15, the motor 15 drives the synchronous belt 16 to drive the transmission shaft 7 to rotate, the transmission shaft 7 drives the first gear 6 to rotate, the first gear 6 drives the second gear 8 to rotate, the second gear 8 drives the first bevel gear 9 to rotate, the first bevel gear 9 drives the second bevel gear 13 to rotate, the second bevel gear 13 drives the first reciprocating screw 11 to rotate, at this time, the first reciprocating screw 11 rotates to drive the first screw nut 12 thereon to slide back and forth along the reciprocating screw 11, thereby driving the entire heating assembly to continue to operate and maintain the softening effect. Embodiment 3

[0021] Reference Figure 1-Figure 2Compared with the first and second embodiments, the heating assembly in this embodiment includes a push rod 17 fixedly connected to the first lead screw nut 12, a piston 18 fixedly connected to the bottom of the push rod 17, a water tank 19 fixedly connected to the outside of the preparation tank 1, a heating box 20 fixedly connected to the outside of the preparation tank 1, a water inlet pipe 23 fixedly connected between the heating box 20 and the water tank 19, a feed orifice 21 fixedly connected to the preparation tank 1, a heating tube 22 wound around the feed orifice 21 fixedly connected to the water tank 19, and an output port of the heating tube 22 fixedly connected to the heating box 20; A number of heating holes are provided on the feed orifice plate 21, which is made of a fast heat-conducting material. The heating holes and the heat-conducting material can quickly absorb and conduct heat to the feed orifice plate 21 and its interior, thereby producing an effect of heating and softening the plastic passing through the feed orifice plate 21 to a certain extent.

[0022] A one-way valve is arranged inside the heating pipe 22, which is directed one way toward the heating box 20; and a one-way valve is arranged inside the water inlet pipe 24, which is directed one way toward the water tank 19. The one-way valve can prevent the hot water inside the heating pipe 22 and the water inlet pipe 23 from flowing back to the previous place when the piston 18 continues to reciprocate, thereby causing water circulation disorder and untimely hot water replenishment.

[0023] An exhaust port 37 is fixedly connected to the top of the preparation tank 1, and a material extraction port 38 connected to the exhaust vortex generator 24 is fixedly connected to one side of the preparation tank 1. The classifying wheel 25 is fixedly connected to the transmission shaft 7. The air flow inside the preparation tank 1 is discharged to the outside of the tank body through the exhaust port 37 to prevent gas reflux from interfering with the rising direction of the material.

[0024] In this embodiment, when the first reciprocating screw 11 rotates, it drives the first screw nut 12 thereon to push the piston 18 through the push rod 17 to perform piston movement along the inside of the water tank 19. When the piston 18 squeezes the moisture inside the water tank 19 inward, the hot water is squeezed into the heating tube 22. At this time, the hot water surrounds the feed orifice 21 through the heating tube 22 to heat the inside, and then flows back to the inside of the heating box 20. When the piston 18 draws the moisture inside the water tank 19 outward, the hot water is drawn from the inside of the heating box 20 through the water inlet pipe 23 to the inside of the water tank 19 by atmospheric pressure, and then the material passing through the inside of the feed orifice 21 is continuously slightly heated and softened by the water temperature to prevent the plastic particles fed from being too hard, thereby causing insufficient grinding of the particles by the air flow mill, thereby causing excessive production of defective products.

[0025] The present invention also provides a production process of PBS modified plastic masterbatch, which adopts the above-mentioned air jet mill device for producing PBS modified plastic masterbatch for grinding, and comprises the following steps: S1. Prepare raw materials: prepare PBS resin, modifier, pigment, dispersant and other raw materials, and ensure the purity and quality of the raw materials to avoid affecting the performance of the final product; S2. Premixing of raw materials: Preliminary mixing of raw materials such as PBS resin, modifier and pigment, and ensuring uniform distribution of raw materials during mixing to improve the efficiency of subsequent crushing and granulation; S3, air flow mill grinding: the pre-mixed raw materials are fed into the air flow mill device through the feed orifice 21. At this time, the raw materials in the process of transportation are slightly preheated by the heating tube 22 outside the feed orifice 21 to deepen the softening degree of the raw materials. Then, the raw materials are crushed at high speed with the help of compressed air or other fluid as the working medium. During the crushing process, strong impact, collision and friction shear will occur between the particles and between the particles and the wall of the classifying wheel 25, so that the raw materials are crushed to the required particle size; S4, diversion and collection: The crushed material passes through the vortex extractor 24 inside the classifying wheel 25 and is collected outside. At this time, the insufficiently ground material is diverted by the classifying wheel 25 and the diversion component back to the classifying wheel 25 and the inside of the preparation tank 1 for re-grinding. The qualified fine powder enters the cyclone separator with the air flow and is collected. The dust-containing gas is filtered and purified by the bag dust collector and then discharged into the atmosphere; S5, granulation and drying: the collected fine powder is sent to the granulator for granulation, and the uniformity and integrity of the particles must be ensured during the granulation process. Finally, the granulated particles need to be dried to remove moisture and volatile substances; S6. Quality monitoring and packaging: The PBS modified plastic masterbatch after granulation is subjected to quality inspection, including particle size, color, dispersibility and other indicators. Finally, the qualified masterbatch is packaged and labeled for subsequent use.

[0026] The above description is only a preferred specific implementation manner of the invention, but the protection scope of the invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the invention within the technical scope disclosed by the invention, which should be covered by the protection scope of the invention.

Claims

1. A jet mill device for producing PBS modified plastic masterbatch, comprising an air jet component, a transmission component and a flow splitter component, characterized in that: The transmission assembly is used to continuously transport and heat the plastic material, and the transmission assembly comprises a preparation tank (1), a support frame (14) fixedly connected to one side of the preparation tank (1), and a motor (15) fixedly connected to the top of the support frame (14); An air extraction vortex generator (24) is fixedly connected to the interior of the preparation tank (1), and a classifying wheel (25) is rotatably connected between one side of the air extraction vortex generator (24) and the inner wall of the preparation tank (1); The diversion component is used for screening, blocking and diversion of plastic masterbatch to prevent blockage. The diversion component comprises a toothed plate (26) fixedly connected to one side of the grading wheel (25) and rotatably connected to the exhaust vortex generator (24); a third gear (27) is rotatably connected to a side of the exhaust vortex generator (24) close to the toothed plate (26); two fixed blocks (28) are fixedly connected to one side of the exhaust vortex generator (24); a baffle plate (29) is rotatably connected between the two fixed blocks (28); a fourth gear (30) is fixedly connected to the top of the baffle plate (29); and a third gear (30) is rotatably connected to the inside of one of the fixed blocks (28). A second reciprocating screw (31) is rotatably connected thereto; the second reciprocating screw (31) is fixedly connected to the third gear (27); a second screw nut (32) is threadedly sleeved on the second reciprocating screw (31); a slide bar (33) is fixedly connected to the bottom of the second screw nut (32); a second fixed plate (34) is fixedly connected below the second reciprocating screw (31) and between the second reciprocating screw and the air extraction vortex finder (24); a sector tooth (35) is rotatably connected to the second fixed plate (34); a slide groove (36) is provided on the sector tooth (35); and the slide bar (33) is slidably connected to the slide groove (36); The jet assembly is used for air flow crushing and grinding of plastic materials, and comprises four air inlet pipes (2) fixedly connected to the preparation tank (1), one end of the four air inlet pipes (2) being fixedly connected to a ventilation pipe (3), the ventilation pipe (3) being fixedly connected to an air inlet joint (4), and the other end of the four air inlet pipes (2) and located inside the preparation tank (1) being fixedly connected to a jet head (5).

2. A jet mill device for producing PBS modified plastic masterbatch according to claim 1, characterized in that: A first gear (6) is rotatably connected to one side of the preparation tank (1), a transmission shaft (7) is fixedly connected to the first gear (6), a driving end of the motor (15) and the transmission shaft (7) are connected via a synchronous belt (16), a second gear (8) is rotatably connected to one side of the preparation tank (1) close to the first gear (6), a first bevel gear (9) is fixedly connected to the second gear (8), two first fixed plates (10) are fixedly connected to one side of the preparation tank (1), a first reciprocating screw (11) is rotatably connected between the two first fixed plates (10), a first screw nut (12) is threadedly sleeved on the first reciprocating screw (11), a second bevel gear (13) is fixedly connected to the top of the first reciprocating screw (11), and a heating component for lightly preheating unprocessed plastic material to deepen the softening degree is arranged on the first screw nut (12).

3. A jet mill device for producing PBS modified plastic masterbatch according to claim 2, characterized in that: The heating assembly comprises a push rod (17) fixedly connected to a first lead screw nut (12), a piston (18) fixedly connected to the bottom of the push rod (17), a water tank (19) fixedly connected to the outside of the preparation tank (1), a heating box (20) fixedly connected to the outside of the preparation tank (1), a water inlet pipe (23) fixedly connected between the heating box (20) and the water tank (19), a feed orifice plate opening (21) fixedly connected to the preparation tank (1), a heating pipe (22) wound around the feed orifice plate opening (21) fixedly connected to the water tank (19), and an output port of the heating pipe (22) fixedly connected to the heating box (20).

4. A jet mill device for producing PBS modified plastic masterbatch according to claim 1, characterized in that: An exhaust port (37) is fixedly connected to the top of the preparation tank (1), a material extraction port (38) communicating with the air extraction vortex generator (24) is fixedly connected to one side of the preparation tank (1), and the classifying wheel (25) is fixedly connected to the transmission shaft (7).

5. A jet mill device for producing PBS modified plastic masterbatch according to claim 1, characterized in that: The baffle plate (29) is provided with a plurality of grading holes, the diameter of the grading holes being smaller than the diameter of the openings on the grading wheel (25), and the slide groove (36) being an arc-shaped groove hole.

6. A jet mill device for producing PBS modified plastic masterbatch according to claim 3, characterized in that: A plurality of heating holes are provided on the feed orifice plate opening (21), and the feed orifice plate opening (21) is made of a fast heat-conducting material.

7. A jet mill device for producing PBS modified plastic masterbatch according to claim 3, characterized in that: A one-way valve that is directed one-way toward the heating box (20) is provided inside the heating pipe (22), and a one-way valve that is directed one-way toward the inside of the water box (19) is provided inside the water inlet pipe (23).

8. A production process of PBS modified plastic masterbatch, based on the use of a jet mill for producing PBS modified plastic masterbatch according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Prepare raw materials: prepare PBS resin, modifier, pigment, dispersant and other raw materials, and ensure the purity and quality of the raw materials to avoid affecting the performance of the final product; S2. Premixing of raw materials: Preliminary mixing of raw materials such as PBS resin, modifier and pigment, and ensuring uniform distribution of raw materials during mixing to improve the efficiency of subsequent crushing and granulation; S3, air flow mill grinding: the premixed raw materials are fed into the air flow mill device through the feed orifice (21). At this time, the raw materials are slightly preheated during transportation through the heating tube (22) outside the feed orifice (21) to deepen the softening degree of the raw materials. Then, the raw materials are crushed at high speed with the help of compressed air or other fluid as the working medium. During the crushing process, strong impact collision and friction shearing will occur between the particles and between the particles and the wall of the classifying wheel (25), thereby crushing the raw materials to the required particle size. S4, diversion and collection: The crushed material passes through the inside of the classifying wheel (25) and the exhaust vortex device (24) to be collected outside. At this time, the insufficiently ground material is diverted by the classifying wheel (25) and the diversion component and returned to the classifying wheel (25) and the inside of the preparation tank (1) for re-grinding. The qualified fine powder is collected by the cyclone separator along with the air flow, and the dust-containing gas is filtered and purified by the bag dust collector and then discharged into the atmosphere; S5, granulation and drying: the collected fine powder is sent to the granulator for granulation, and the uniformity and integrity of the particles must be ensured during the granulation process. Finally, the granulated particles need to be dried to remove moisture and volatile substances; S6. Quality monitoring and packaging: The PBS modified plastic masterbatch after granulation is subjected to quality inspection, including particle size, color, dispersibility and other indicators. Finally, the qualified masterbatch is packaged and labeled for subsequent use.

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