A jet mill device for producing PBS modified plastic masterbatch and its production process

Abstract

The present invention discloses a jet mill device for producing PBS modified plastic masterbatch, including an air jet component, a transmission component and a diversion component, wherein the diversion component is used for screening, blocking and diversion and blocking of plastic masterbatch, and the diversion component includes a tooth plate fixedly connected to one side of a grading wheel and rotatably connected to an exhaust vortex flow device; the present invention also proposes a production process for PBS modified plastic masterbatch, including the following steps: S1, preparing raw materials such as PBS resin, modifier, pigment, dispersant, etc.; S2, preliminarily mixing raw materials such as PBS resin, modifier and pigment; S4, diversion and collection; S5, granulation and drying; S6, quality monitoring and packaging. The present invention effectively pushes excess materials out of the grading wheel by swinging the baffle plate inside the grading wheel, avoiding excessive accumulation of materials inside the grading wheel, and blocks and diverts materials whose sizes do not meet the standards through the baffle plate, so that they continue to stay inside 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] Jet mills for plastic masterbatch production are used to crush and refine plastic raw materials. These devices typically utilize jet mill technology to crush the material with high-speed airflow, producing fine particles or powder for the production of plastic masterbatch.

[0003] Current jet mills, such as the one disclosed in Chinese Patent Publication No. CN118372398A for producing plastic masterbatches, pulverize and grind the material by directly conveying it behind the classifying wheel after one round of grinding. This can easily lead to insufficient grinding of the material within the mill. Furthermore, material accumulation can occur within the mill and the classifying wheel, further preventing sufficient grinding of the material, resulting in the finished plastic masterbatch failing to meet the required standards. Accordingly, this application proposes a jet mill for producing PBS-modified plastic masterbatches and a production process thereof. 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 and a production process for producing PBS modified plastic masterbatch.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A jet mill device for producing PBS modified plastic masterbatch, comprising an air jet component, a transmission component and a flow diversion component;

[0007] The transmission assembly is used to continuously transport 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;

[0008] 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;

[0009] The top of the blocking plate is fixedly connected to the fourth gear, and the top of the blocking plate is fixedly connected to the fourth gear, and the fourth gear is fixedly connected to the fourth gear.

[0010] One side of the preparation tank is rotatably connected to a first gear, a transmission shaft is fixedly connected to the first gear, a driving end of the motor is connected to the transmission shaft via a synchronous belt, the classifying wheel is fixedly connected to the transmission shaft, the rotation of the classifying wheel drives the gear plate to rotate along the inside of the exhaust vortex finder, and the gear plate drives the third gear and the second reciprocating screw thereon to rotate;

[0011] 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 end of the four air inlet pipes and located inside the preparation tank are fixedly connected to a jet head.

[0012] Preferably, the preparation tank is rotatably connected to a second gear on one side close to the first gear, a first bevel gear is fixedly connected to the second 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, a second bevel gear is fixedly connected to the top of the first reciprocating screw, and a heating component is provided on the first screw nut for lightly preheating the unprocessed plastic material to deepen the softening degree.

[0013] Preferably, the heating assembly includes a push rod fixedly connected to the first screw nut, the bottom of the push rod is fixedly connected to a piston, the outside of the preparation tank is fixedly connected to a water tank, the outside of the preparation tank is fixedly connected to a heating box, a water inlet pipe is fixedly connected between the heating box and the water tank, a feed orifice plate is fixedly connected to the preparation tank, a heating pipe wrapped around the feed orifice plate is fixedly connected to the water tank, and the output port of the heating pipe is fixedly connected to the heating box.

[0014] Preferably, an exhaust port is fixedly connected to the top of the preparation tank, and a material extraction port communicating with the exhaust vortex device is fixedly connected to one side of the preparation tank.

[0015] Preferably, a plurality of grading holes are opened on the blocking plate, the diameter of the grading holes is smaller than the diameter of the openings on the grading wheel, and the sliding groove is an arc-shaped slot.

[0016] Preferably, a plurality of heating holes are provided on the feed orifice plate, and the feed orifice plate is made of a fast heat-conducting material.

[0017] Preferably, a one-way valve is provided inside the heating pipe, 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.

[0018] The present invention also provides a production process for PBS modified plastic masterbatch, which uses the above-mentioned air jet mill device for producing PBS modified plastic masterbatch for grinding, comprising the following steps:

[0019] 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;

[0020] S2. Raw material premixing: Preliminary mixing of raw materials such as PBS resin, modifier and pigment, and ensuring uniform distribution of raw materials during the mixing process to improve the efficiency of subsequent crushing and granulation;

[0021] S3. Jet mill grinding: The pre-mixed raw materials are fed into the jet mill through the feed orifice. At this time, the raw materials are slightly preheated by the heating tube outside the feed orifice to deepen the softening degree of the raw materials. Then, compressed air or other fluid is used as the working medium to grind the raw materials at high speed. During the grinding process, strong impact, collision and friction shear will occur between the particles and between the particles and the wall of the classifying wheel, thereby grinding the raw materials to the required particle size;

[0022] S4, diversion and collection: The crushed material passes through the vortex extractor inside the classifying wheel and is collected outside. At this time, the classifying wheel and diversion component divert the insufficiently ground material obliquely back to the classifying wheel and the inside of the preparation tank for re-grinding. The qualified fine powder is collected by the cyclone separator with the air flow, and the dust-laden gas is filtered and purified by the bag dust collector before being discharged into the atmosphere;

[0023] 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.

[0024] 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.

[0025] The present invention has the following beneficial effects:

[0026] 1. By setting up a transmission assembly and a heating assembly, the transmission shaft can be driven by a motor-driven 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 it, and then flows back to the inside of the heating box. When the piston draws the water inside the water tank outward, hot water is drawn out from the inside of the heating box through the water inlet pipe into the inside of the water tank by 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.

[0027] 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 inlet joint, and then diverted into the inside of the preparation tank through four air inlet 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 being heated and softened, the material is transmitted upward through the jet airflow. The motor drives the transmission shaft and the classifying wheel on it to rotate through the synchronous belt. The rotation of the classifying wheel drives the gear plate to rotate along the inside of the exhaust vortex device. The gear 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 slide rod to slide back and forth along the slide groove, which can push the sector teeth to rotate back and forth around the second fixed plate, and then push the fourth gear and the blocking plate fixedly connected to it to swing back and forth through the sector 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 extracted out through the extraction port by the exhaust vortex device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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;

[0029] Figure 2 This is a schematic diagram of the structure of the interior of the preparation tank in the present invention;

[0030] Figure 3 Schematic diagram of the internal structure of the classifying wheel in the present invention;

[0031] Figure 4 Schematic diagram of the internal structure of the air extraction vortex finder in the present invention;

[0032] Figure 5 Schematic diagram of the structure of the diversion component in the present invention;

[0033] Figure 6 for Figure 1 Schematic diagram of the enlarged structure of A in the figure.

[0034] In the figure: 1 preparation tank, 2 air inlet pipe, 3 ventilation pipe, 4 air inlet joint, 5 nozzle, 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 exhaust vortex device, 25 classifying 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 sector teeth, 36 slide chute, 37 exhaust port, 38 extraction port. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0036] Example 1:

[0037] Reference Figure 1-Figure 2 and Figure 6 , a jet mill device for producing PBS modified plastic masterbatch, comprising: an air jet component, a transmission component and a diversion component;

[0038] The transmission assembly is used to continuously transport and heat the plastic material. 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;

[0039] An exhaust vortex generator 24 is fixedly connected to the interior of the preparation tank 1. A classifying wheel 25 is rotatably connected between one side of the exhaust vortex generator 24 and the inner wall of the preparation tank 1. The classifying wheel 25 classifies the material inside the preparation tank 1 and provides the material with a collision and grinding wall.

[0040] The diversion component is used to screen, block and divert plastic masterbatch to prevent blocking. The diversion component includes a tooth plate 26 fixedly connected to one side of the grading wheel 25 and rotatably connected to the exhaust vortex finder 24. The inside of the exhaust vortex finder 24 is rotatably connected to the side close to the tooth plate 26. A third gear 27 is fixedly connected to one side of the exhaust vortex finder 24. Two fixed blocks 28 are fixedly connected to one side of the exhaust vortex finder 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. The top of the baffle plate 29 is fixedly connected to a fourth gear 30. The inside of a fixed block 28 is rotatably connected to a second reciprocating screw 31. The second reciprocating screw 31 and the third gear are connected to each other. The second reciprocating screw 31 is fixedly connected to the second gear 27, and a second lead screw nut 32 is threadedly sleeved on the second reciprocating screw 31. The bottom of the second lead screw nut 32 is fixedly connected to the sliding rod 33. A second fixed plate 34 is fixedly connected to the lower part of the second reciprocating screw 31 and the exhaust vortex finder 24. The second fixed plate 34 is rotatably connected to the fan-shaped teeth 35. The fan-shaped teeth 35 can synchronously drive the fourth gear 30 to reciprocate at a certain angle. A sliding groove 36 is provided on the fan-shaped teeth 35. The sliding rod 33 is slidably connected to the sliding groove 36. The setting of the sliding groove 36 can enable the second lead screw nut 32 to push the sliding rod 33 to slide back and forth inside it, and then the reciprocating sliding of the sliding rod 33 pushes the fan-shaped teeth 35 to rotate back and forth in an arc.

[0041] One side of the preparation tank 1 is rotatably connected to a first gear 6, to which a transmission shaft 7 is fixedly connected. The driving end of the motor 15 is connected to the transmission shaft 7 via a synchronous belt 16. The classifying wheel 25 is fixedly connected to the transmission shaft 7. The rotation of the classifying wheel 25 drives the toothed plate 26 to rotate along the inside of the exhaust vortex finder 24. The toothed plate 26 drives the third gear 27 and the second reciprocating screw 31 thereon to rotate.

[0042] The jet assembly is used to perform air flow crushing and grinding on 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 end of the four air inlet pipes 2 and located inside the preparation tank 1 are fixedly connected to a jet head 5.

[0043] In this embodiment, the air inlet connector 4 guides the air flow into the vent pipe 3, and then the air flow is divided into the preparation tank 1 through the four air inlet pipes 2. The air flow is ejected from the four air nozzles 5 inside the preparation tank 1. At this time, the material is fed into the preparation tank 1 through the feed orifice 21. After being heated and softened, the material is transported upward by the air jet to the inside of the classifying wheel 25 for unified crushing and grinding.

[0044] At the same time, the transmission shaft 7 drives the classifying wheel 25 on it to rotate along the inside of the exhaust vortex flow device 24, and the rotation of the classifying wheel 25 drives the gear plate 26 to rotate along the inside of the exhaust vortex flow device 24, and the gear plate 26 drives the third gear 27 and the second reciprocating screw 31 on it 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 sector gear 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 sector gear 35, and finally not only makes the blocking plate 29 swing inside the classifying wheel 25 to push the excess material out of the classifying wheel 25, but also blocks and diverts the material that does not meet the size standard through the blocking plate 29, so that it continues to stay in the classifying wheel 25 for further grinding, which can effectively divert and re-grind the plastic masterbatch, greatly improving the working efficiency and yield rate.

[0045] Embodiment 2;

[0046] Further, refer to Figure 2-Figure 5 Compared with the first embodiment, in this embodiment, the side of the preparation tank 1 close to the first gear 6 is rotatably connected to the second gear 8, and the second gear 8 is fixedly connected to the first bevel gear 9. Two first fixed plates 10 are fixedly connected to one side of the preparation tank 1, and 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, and a second bevel gear 13 is fixedly connected to the top of the first reciprocating screw 11. A heating component for slightly preheating the unprocessed plastic material to deepen the softening degree is provided on the first screw nut 12;

[0047] 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 pushes 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, and 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 first reciprocating screw 11, thereby driving the entire heating component to continue to operate and maintain the softening effect.

[0048] Embodiment 3;

[0049] 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 pipe 22 wound around the feed orifice 21 fixedly connected to the water tank 19, and an output port of the heating pipe 22 fixedly connected to the heating box 20;

[0050] There are several heating holes on the feed orifice plate 21. The feed orifice plate 21 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 a certain degree of heating and softening effect on the plastic passing through the feed orifice plate 21.

[0051] A one-way valve is provided inside the heating pipe 22, which is directed one way toward the heating box 20, and a one-way valve is provided inside the water inlet pipe 23, which is directed one way toward the inside of the water tank 19. The setting of 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.

[0052] 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 air flow inside the preparation tank 1 is discharged outside the tank body through the exhaust port 37 to prevent gas reflux from interfering with the rising direction of the material.

[0053] 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 water inside the water tank 19 inward, the hot water is squeezed into the inside of the heating tube 22. At this time, the hot water surrounds the feed orifice 21 through the heating tube 22 to heat the inside of it, and then flows back to the inside of the heating box 20. When the piston 18 draws the water inside the water tank 19 outward, the hot water is drawn out 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 heated and softened by the water temperature to prevent the fed plastic particles from being too hard, thereby causing the air flow mill to insufficiently grind them, thereby causing excessive production of defective products.

[0054] The present invention also provides a production process for PBS modified plastic masterbatch, which uses the above-mentioned air jet mill device for producing PBS modified plastic masterbatch for grinding, comprising the following steps:

[0055] 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;

[0056] S2. Raw material premixing: Preliminary mixing of raw materials such as PBS resin, modifier and pigment, and ensuring uniform distribution of raw materials during the mixing process to improve the efficiency of subsequent crushing and granulation;

[0057] S3, air flow mill grinding: The pre-mixed raw materials are fed into the air flow mill through the feed orifice 21. The raw materials are slightly preheated during transportation by the heating tube 22 outside the feed orifice 21 to deepen the softening of the raw materials. Then, compressed air or other fluid is used as the working medium to grind the raw materials at high speed. During the grinding process, strong impact, collision and friction shear are generated between the particles and between the particles and the wall of the classifying wheel 25, thereby grinding the raw materials to the desired particle size.

[0058] S4, diversion and collection: The crushed material passes through the classifying wheel 25 and the vortex extractor 24 to be collected outside. At this time, the classifying wheel 25 and the diversion component divert the insufficiently ground material obliquely back 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 with the air flow, and the dust-containing gas is filtered and purified by the bag dust collector and discharged into the atmosphere;

[0059] 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.

[0060] 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.

[0061] The above description is only a preferred specific embodiment of the invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present 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, and the diversion component comprises 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 the side of the exhaust vortex generator (24) close to 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); 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 movably 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 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); 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) is connected to the transmission shaft (7) via a synchronous belt (16), the classifying wheel (25) is fixedly connected to the transmission shaft (7), the classifying wheel (25) rotates to drive the toothed plate (26) to rotate along the inside of the air extraction vortex finder (24), and the toothed plate (26) drives the third gear (27) and the second reciprocating screw (31) thereon to rotate; The jet assembly is used for air flow crushing and grinding of plastic materials, and comprises four air inlet pipes (2) fixedly connected to a 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 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 slightly 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 the first 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), and a material extraction port (38) communicating with the air extraction vortex generator (24) is fixedly connected to one side of the preparation tank (1).

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) is 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 arranged inside the heating pipe (22), and a one-way valve that is directed one-way toward the inside of the water box (19) is arranged 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), and the raw materials are lightly 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), so that the raw materials are crushed to the required particle size; S4, diversion and collection: The crushed materials are collected outside through the classifying wheel (25) through the exhaust vortex device (24). At this time, the insufficiently ground materials are diverted back to the classifying wheel (25) and the preparation tank (1) through the classifying wheel (25) and the diversion component 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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