Plastic raw material screening equipment for protective film production

Abstract

The invention belongs to the technical field of plastic production and screening, and particularly relates to plastic raw material screening equipment for protective film production. The screening part is arranged in the processing part; the guide part is used for guiding the plastic particles to enter the screening part; the treatment part comprises a flow dividing box shell, and the flow dividing box shell is erected on the ground. The device can screen fed plastic particles, the mixed plastic particles are sequentially divided into three groups according to the particle size and output to the outside through the discharging bottom pipe, and due to the fact that the screening barrel can sequentially expand in sequence according to the screening state of the internal particles, under the condition that it is guaranteed that the fine particles are completely screened, the screening efficiency is greatly improved. Most plastic particles are transferred into the screening barrel with a larger filtering opening to be sorted, so that the situation that small-particle plastic which is not screened out is discharged from other discharging openings, and the screened-out particles are still mixed is avoided.

Description

Technical Field

[0001] This invention belongs to the field of plastic production screening technology, specifically a plastic raw material screening device for protective film production. Background Technology

[0002] Plastics are high molecular weight compounds polymerized from monomers through addition or condensation reactions. Commonly known as plastics or resins, they can have their composition and shape changed freely. They are composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. Plastic granules are a product of plastic products and also a raw material for plastic production and processing. They have important production and research value. During the production and processing of plastic granules, a screening process is usually required to remove impurities and substandard plastic granules.

[0003] A raw material screening mechanism and screening equipment for plastic production, with publication number CN119704443A, uses a three-section screen to screen plastic granules from left to right. Therefore, the diameter of the plastic granules to be screened should be in ascending order from left to right. However, the granules that are just put into the machine will accumulate on the left side of the three-section screen. Larger granules may block the filter port of the three-section screen, resulting in less granules screened out from the leftmost discharge port. The remaining small plastic granules that are not screened will be discharged from other discharge ports with the movement, resulting in mixed granules after screening. Therefore, improvements are needed. Summary of the Invention

[0004] To address the problem of impurities still existing in the granules separated by existing technologies, the technical solution adopted in this invention is: a plastic raw material screening device for protective film production, comprising: Processing components; The screening component is located inside the processing component; Guiding components are used to guide plastic particles into the screening components; The processing component includes: Diverter housing, which is mounted on the ground; The screening component includes: The first screening cylinder has its outer surface on the left side connected to the inner cavity of the diversion box via a snap-fit, and the inner cavity of the first screening cylinder is uniformly provided with first filter ports. The second screening cylinder has its left side sleeved with the outer surface of the first screening cylinder, and the inner cavity of the second screening cylinder is uniformly provided with second filter ports. The third screening cylinder has its right side fitted onto the outer surface of the second screening cylinder, and its inner cavity is uniformly provided with third filter ports. The top of the diversion box shell is provided with a receiving groove for accommodating the three sets of screening cylinders. The three sets of screening cylinders can be sequentially nested together, with the first screening cylinder located in the innermost layer and the third screening cylinder located in the outermost layer. The diameters of the filter ports of the first, second, and third filters increase progressively, and after the three sets of screening cylinders are sequentially nested, the center lines of the filter ports of each screening cylinder are the same.

[0005] Furthermore, the screening component also includes: Side-rotating machine; An insert sleeve is provided, wherein the inner cavity of the insert sleeve is inserted into the outer surface of the rotating shaft of the side rotating machine at the center of the shaft, and the outer surface of the insert sleeve is covered with a protective sleeve. A connecting sleeve is provided, wherein the outer surface of the insertable sleeve is slidably connected to the axis of the inner wall of the insertable sleeve, and the left side of the outer surface of the connecting sleeve extends into the interior of the third screening cylinder through the insertion port. The insertable sleeve drives the screened cylinder assembly to rotate.

[0006] Furthermore, the connecting sleeve includes: A guide cylinder shell, the left end of the outer surface of the guide cylinder shell is inserted into the inner cavity of the third screening cylinder through a socket, and a filter screen is fixedly connected to the left end of the guide cylinder shell, and the filter screen extends into the interior of the third screening cylinder. The built-in suction pump has its outer surface inserted into the left end of the inner wall of the guide cylinder shell, and its external pipe extends to the outside of the guide cylinder shell. The built-in suction pump performs suction through the two sets of pipes on the left side and exhausts through the pipes on the front and rear sides. The built-in push cylinder has a traction connecting rod slidably connected to its left end, and the outer surface of the built-in push cylinder is fixedly connected to the left side of the inner cavity of the guide cylinder shell. The inner impact ring has its outer surface slidably connected to the inner wall of the filter screen, and the left end of the traction rod is inserted into the inner cavity of the inner impact ring through a socket. The built-in pusher can cause an impact on the filter screen from the inside out by reciprocatingly pushing the inner impact ring.

[0007] Furthermore, the processing component also includes: The bottom discharge pipe is inserted into the bottom of the outer surface of the diversion box shell through a port. The inner cavity of the diversion box shell is evenly provided with three sets of partition grooves, and each partition groove is aligned with the fully slid-out screening cylinder. Side guide rail, the left end of which is inserted into the left side of the outer surface of the diverter housing; The control vertical plate has its top end fixedly connected to the right side of the outer surface of the side rotating machine, and its bottom end is slidably connected to the inner wall of the side guide rail via a traction device. The control components are located on the front and rear sides of the inner cavity of the diversion box and are used to pull the folded cylinder structure of the screening components.

[0008] Furthermore, the control component includes: A guide plate, the outer surface of which is inserted into the inner cavity of the diversion box shell through a groove, and the inner cavity of the guide plate is provided with a horizontal slide rail; The end motor has friction balls evenly distributed on its outer surface near the guide plate. The outer surface of the friction balls is in rolling contact with the back of the guide plate. The end motor can drive the friction balls to rotate via an internal turntable, thereby using rolling friction to drive the end motor to slide horizontally along the horizontal rail of the guide plate.

[0009] Furthermore, the control component also includes: The adjusting rod has one end away from the distributor housing that is inserted into the middle of the outer surface of the end motor, and the outer surface of the adjusting rod is slidably connected to the inner cavity of the guide plate through a horizontal slide rail. The front end of the adjusting rod extends into the interior of the distributor housing. The adjusting rod is a two-section segmented rod. The guide shaft has its back surface fixedly connected to the end of the adjusting rod away from the end motor. The guide shaft has symmetrical connecting plates on both sides of its outer surface. The adjusting rod is held in place by the connecting plates at the side position of the corresponding screening cylinder.

[0010] Furthermore, the guiding component includes: Feeding cylinder, the top of which is fixedly connected to a funnel flare; A bent tube is provided, the top end of which is inserted into the bottom end of the feeding cylinder, and the bottom end of which is inserted into the axis of the inner cavity of the first screening cylinder through an insertion interface. A filter plug, the outer surface of which is fixedly connected to the axis of the inner wall of the funnel flare.

[0011] Furthermore, the guiding component also includes: A stirring motor, the outer surface of which is fixedly connected to the ceiling via a connector, an extension rod is inserted into the outer surface of the stirring motor shaft, the bottom end of which extends into the interior of the bent tube, and the outer surface of which is rotatably connected to the axis of the inner wall of the filter plug. A striking fan plate, the outer surface of which is inserted into the outer surface of the extension connecting rod; A dust collection box, the outer surface of which is inserted into the inner cavity of the feeding cylinder, and the air inlet of the dust collection box extends into the interior of the feeding cylinder.

[0012] The beneficial effects of this invention are as follows: 1. This device can screen the fed plastic granules, dividing the mixed plastic granules into three groups according to their size, and outputting them to the outside through the bottom discharge pipe. Since the screening cylinder expands sequentially according to the screening state of the internal particles, it can transfer most of the plastic granules to the screening cylinder with larger filter openings for further sorting while ensuring that the finer particles are completely screened. This avoids the situation where small plastic particles that are not screened are discharged from other outlets, resulting in mixed particles in the screened granules.

[0013] 2. The particles inside the screening cylinder will rotate centrifugally with the cylinder body, thereby accelerating the screening efficiency. The connecting sleeve on the right side can use the built-in suction pump to draw and adsorb the plastic particles into the rightmost cylinder body, realizing the particle transfer effect and preventing the particles from accumulating inside the first screening cylinder and making it difficult to transfer effectively. After the filter screen is improved, the built-in pusher will repeatedly push the inner impact ring to hit the filter screen, shaking the plastic particles attached to the filter screen opening to the left, thereby preventing the plastic particles from clogging the filter screen opening and ensuring the adsorption effect of the connecting sleeve.

[0014] 3. This device controls each screening cylinder to move independently through control components, and can maintain the stable rotation of each screening cylinder during particle screening. The screening cylinders are unfolded in sequence according to the set order, avoiding the problem that when the nested screening cylinders are centrifugally rotated, the vibration of the internal particles will cause the screening cylinders to separate, resulting in a large number of mixed particles being directly discharged through the large filter port, which would lead to a deterioration in screening effect.

[0015] 4. After the plastic granules are added into the feeding cylinder through the flared opening of the funnel, the plastic granules will enter the first screening cylinder on the far left along the bent pipe. During the process of passing through the bent pipe, the stirring motor will break up the agglomerated plastic granules by rotating the impact fan plate, so that the plastic granules are evenly dispersed and avoid clumping. Since the dust and impurities attached to the dispersed plastic granules are relatively light, the dust collection box located at the top can absorb the separated dust and achieve the dust removal and purification effect. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the screening component of the present invention; Figure 4 This is a cross-sectional view of the connecting sleeve of the present invention; Figure 5 This is a cross-sectional view of the diversion box shell of the present invention; Figure 6 This is a cross-sectional view of the guide plate of the present invention; Figure 7 This is a cross-sectional view of the feeding cylinder of the present invention.

[0017] In the diagram: 1. Processing component; 2. Screening component; 3. Guiding component; 21. First screening cylinder; 22. Second screening cylinder; 23. Third screening cylinder; 24. Side rotating machine; 25. Insertion sleeve; 26. Connecting sleeve; 261. Guide cylinder shell; 262. Built-in suction pump; 263. Filter screen cover; 264. Built-in push cylinder; 265. Inner impact ring; 11. Diversion box shell; 12. Separating groove; 13. Discharge bottom 14. Side guide rail; 15. Control vertical plate; 4. Control components; 41. Guide plate; 42. Horizontal slide rail; 43. End motor; 44. Friction ball; 45. Adjusting rod; 46. Guide shaft; 47. Connecting clamp; 31. Feeding cylinder; 32. Bending through pipe; 33. Funnel flare; 34. Dust collection box; 35. Filter plug; 36. Stirring motor; 37. Extension rod; 38. Impact fan plate. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0019] Example 1, please refer to Figures 1-4 This invention provides a technical solution: a plastic raw material screening device for protective film production, comprising: Processing component 1; Screening component 2 is located inside processing component 1; Guide component 3 is used to guide plastic particles into screening component 2; Processing component 1 includes: Diverter housing 11, which is mounted on the ground; Screening component 2 includes: The first screening cylinder 21 has its outer left side snapped into the left side of the inner cavity of the diversion box shell 11 via a snap-fit, and the inner cavity of the first screening cylinder 21 is uniformly provided with first filter ports. The second screening cylinder 22 has its left side sleeved with the outer surface of the first screening cylinder 21, and the inner cavity of the second screening cylinder 22 is uniformly provided with second filter ports. The third screening cylinder 23 is sleeved on the right side of the outer surface of the second screening cylinder 22, and the inner cavity of the third screening cylinder 23 is uniformly provided with third filter ports. The top of the diversion box shell 11 is provided with a receiving groove for accommodating the three sets of screening cylinders. The three sets of screening cylinders can be sequentially sleeved together. At this time, the first screening cylinder 21 is located in the innermost layer, and the third screening cylinder 23 is located in the outermost layer. The filter port diameters of the first filter port, the second filter port, and the third filter port increase in sequence, and after the three sets of screening cylinders are sequentially sleeved, the center lines of the filter ports of each screening cylinder are the same.

[0020] Screening component 2 also includes: Side-rotating machine 24; Insertion sleeve 25, the shaft on the right side of the inner cavity of insertion sleeve 25 is inserted into the outer surface of the rotating shaft of the side rotating machine 24, and the outer surface of insertion sleeve 25 is covered with a protective sleeve. The outer surface of the connecting sleeve 26 and the insert sleeve 25 are slidably connected to the axis of the inner wall of the insert sleeve 25, and the left side of the outer surface of the connecting sleeve 26 extends into the interior of the third screening cylinder 23 through the insertion port. The insert sleeve 25 drives the sleeved screening cylinder assembly to rotate.

[0021] Connecting sleeve 26 includes: The guide cylinder shell 261 has its left end inserted into the inner cavity of the third screening cylinder 23 via a socket. A filter screen 263 is fixedly connected to the left end of the guide cylinder shell 261 and extends into the interior of the third screening cylinder 23. The built-in suction pump 262 is inserted into the left end of the inner wall of the guide cylinder shell 261 on its outer surface, and the external pipe of the built-in suction pump 262 extends to the outside of the guide cylinder shell 261. The built-in suction pump 262 performs suction work through the two sets of pipes on the left side and exhaust work through the pipes on the front and rear sides. The built-in push cylinder 264 has a traction connecting rod slidably connected to its left end, and the outer surface of the built-in push cylinder 264 is fixedly connected to the left side of the inner cavity of the guide cylinder shell 261. The inner impact ring 265 has its outer surface slidably connected to the inner wall of the filter screen 263, and the left end of the traction rod is inserted into the inner cavity of the inner impact ring 265 through a socket. The built-in pusher 264 can cause an impact on the filter screen 263 from the inside out by reciprocatingly pushing the inner impact ring 265.

[0022] Plastic granules are fed into the internal screening component 2 through the guide component 3. In the initial state, the three screening cylinders are sequentially nested together, and the first screening cylinder 21 is always located on the left side of the diversion box shell 11 and is limited so that the first screening cylinder 21 can only rotate and cannot move. Since the three screening cylinders are nested together, each filter port is in an axially aligned state. Starting from the first screening cylinder 21 inside, the diameter of the filter port of each screening cylinder gradually increases from the inside to the outside, which is used to screen out three groups of particles of different sizes.

[0023] The newly added plastic granules will gather inside the first screening cylinder 21. At this time, the connecting sleeve 26 is stretched to the leftmost position. The second screening cylinder 22 and the third screening cylinder 23 are both fitted outside the first screening cylinder 21. Under the rotation of the side rotating machine 24, the stacked screening cylinders rotate centrifugally. The plastic granules inside the first screening cylinder 21 are centrifuged and the smallest particles inside pass through the filter ports of the three sets of screening cylinders and are discharged into the leftmost dividing groove 12, and then conveyed outward through the discharge bottom pipe 13.

[0024] After a period of centrifugal rotation, the fine particles inside are discharged. The second screening cylinder 22 and the third screening cylinder 23 are then pulled to the right synchronously by the control components 4 on both sides, so that the first screening cylinder 21 and the second screening cylinder 22 are completely separated. However, the third screening cylinder 23 is still fitted onto the outer surface of the second screening cylinder 22. At this time, the plastic particles inside enter the interior of the second screening cylinder 22. Since the filter port of the second screening cylinder 22 is larger than the filter port of the first screening cylinder 21, a second group of plastic particles will pass through the filter ports of the second screening cylinder 22 and the third screening cylinder 23 and enter the middle dividing groove 12, and be transported outward through the discharge bottom pipe 13.

[0025] After a period of centrifugal rotation, the control unit 4 pulls the third screening cylinder 23 to the right, so that the three sets of screening cylinders are in a neutral position. Figure 2 As shown in the fully extended state, the plastic particles inside enter the interior of the third screening cylinder 23. Since the filter opening of the third screening cylinder 23 is larger than that of the filter opening of the second screening cylinder 22, the remaining plastic particles will enter the rightmost dividing groove 12 through the filter opening of the third screening cylinder 23 and be conveyed outward through the discharge bottom pipe 13. At this time, the plastic particles have been screened.

[0026] After the plastic granules fed in a single batch are screened, subsequent feeding is carried out. At this time, the screening cylinders are compressed back to the sequentially nested state to prevent the fed plastic granules from passing directly through the second screening cylinder 22 and the third screening cylinder 23.

[0027] Example 2, please refer to Figures 1-7 The present invention provides a technical solution: based on embodiment 1, the processing component 1 further includes: The bottom discharge pipe 13 is inserted into the bottom of the outer surface of the diversion box shell 11 through a port. The inner cavity of the diversion box shell 11 is evenly provided with three sets of partition grooves 12, and each partition groove 12 is aligned with the fully slid-out screening cylinder. Side guide rail 14, the left end of which is inserted into the left side of the outer surface of the diverter housing 11; The top of the control vertical plate 15 is fixedly connected to the right side of the outer surface of the side rotating machine 24, and the bottom of the outer surface of the control vertical plate 15 is slidably connected to the inner wall of the side guide rail 14 through a traction device. The control component 4 is located on the front and rear sides of the inner cavity of the diversion box shell 11 and is used to pull the folded cylinder structure of the screening component 2.

[0028] Control component 4 includes: The guide plate 41 has an outer surface that is inserted into the inner cavity of the diversion box housing 11 through a groove, and the inner cavity of the guide plate 41 is provided with a horizontal slide rail 42. The end motor 43 has friction balls 44 evenly distributed on its outer surface near the guide plate 41. The outer surface of the friction balls 44 is in rolling contact with the back of the outer surface of the guide plate 41. The end motor 43 can drive the friction balls 44 to rotate through an internal turntable, thereby driving the end motor 43 to slide horizontally against the horizontal slide rail 42 of the guide plate 41 through rolling friction.

[0029] Control component 4 also includes: Adjusting rod 45, the end of adjusting rod 45 away from the diverter housing 11 is inserted into the middle of the outer surface of the end motor 43, and the outer surface of adjusting rod 45 is slidably connected to the inner cavity of guide plate 41 through horizontal slide rail 42. The front end of adjusting rod 45 extends into the interior of diverter housing 11. Adjusting rod 45 is a two-section segmented connecting rod. The guide shaft 46 has its back side fixedly connected to the end of the adjusting rod 45 away from the end motor 43. Connecting clamps 47 are symmetrically arranged on both sides of the outer surface of the guide shaft 46. The adjusting rod 45 is held by the connecting clamps 47 to the side position of the corresponding screening cylinder.

[0030] Guide component 3 includes: Feeding cylinder 31, with a funnel flare 33 fixedly connected to the top of feeding cylinder 31; The top end of the bent tube 32 is inserted into the bottom end of the feeding cylinder 31, and the bottom end of the bent tube 32 is inserted into the axis of the inner cavity of the first screening cylinder 21 through the insertion interface. The outer surface of the filter plug 35 is fixedly connected to the axis of the inner wall of the funnel flare 33.

[0031] Guide component 3 also includes: A stirring motor 36 has its outer surface fixedly connected to the ceiling via a connector. An extension rod 37 is inserted into the outer surface of the rotating shaft of the stirring motor 36. The bottom end of the extension rod 37 extends into the interior of the bent pipe 32. The outer surface of the extension rod 37 is rotatably connected to the axis of the inner wall of the filter plug 35. The outer surface of the striking fan plate 38 is inserted into the outer surface of the extension link 37. The dust collection box 34 has its outer surface inserted into the inner cavity of the feeding cylinder 31, and the air inlet of the dust collection box 34 extends into the interior of the feeding cylinder 31.

[0032] Since the guide cylinder shell 261 is always inserted into the third screening cylinder 23, the built-in suction pump 262 inside will drive the plastic particles into the rightmost cylinder by means of suction and flow, assisting in the transfer of plastic particles. With the filter screen 263 blocking, the plastic particles will not enter the built-in suction pump 262. In order to prevent the plastic particles from blocking the filter port of the filter screen 263, the built-in push cylinder 264 will repeatedly push the inner impact ring 265 to hit the filter screen 263, shaking the plastic particles attached to the filter port of the filter screen 263 to the left.

[0033] Each screening cylinder is clamped and controlled by a corresponding connecting clamp 47. When the screening cylinders rotate, they will slip relative to the connecting clamp 47. When the corresponding screening cylinder is pulled to move, the end motor 43 will drive the adjusting rod 45 to slide along the inner wall of the guide plate 41 by controlling the friction ball 44 to roll, thereby realizing the action of controlling each screening cylinder to move individually.

[0034] After the plastic granules are added into the feeding cylinder 31 through the funnel flare 33, the plastic granules will enter the leftmost first screening cylinder 21 along the bent pipe 32. During the process of passing through the bent pipe 32, the stirring motor 36 will disperse the agglomerated plastic granules by rotating the impact fan plate 38, so that the plastic granules are evenly dispersed and avoid clumping. Since the dust and impurities attached to the dispersed plastic granules are relatively light, the dust collection box 34 located at the top can absorb the separated dust and achieve the dust removal and purification effect.

[0035] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A plastic raw material screening device for protective film production, comprising: Processing component (1); The screening component (2) is located inside the processing component (1); Guide component (3) is used to guide plastic particles into screening component (2); The characteristic is that the processing component (1) includes: Diverter housing (11), which is mounted on the ground; The screening component (2) includes: The first screening cylinder (21) has its outer surface on the left side connected to the inner cavity of the diversion box shell (11) via a snap-fit, and the inner cavity of the first screening cylinder (21) is uniformly provided with a first filter port. The second screening cylinder (22) is sleeved on the left side of the first screening cylinder (21) and the inner cavity of the second screening cylinder (22) is uniformly provided with second filter ports. The third screening cylinder (23) is sleeved on the right side of the second screening cylinder (22) and the inner cavity of the third screening cylinder (23) is uniformly provided with a third filter port.

2. The plastic raw material screening equipment for protective film production according to claim 1, characterized in that: The screening component (2) further includes: Side-rotating machine (24); Insertion sleeve (25), the shaft center on the right side of the inner cavity of the insertion sleeve (25) is inserted into the outer surface of the rotating shaft of the side rotating machine (24), and the outer surface of the insertion sleeve (25) is covered with a protective sleeve. Connecting sleeve (26), the outer surface of the insert sleeve (25) is slidably connected to the axis of the inner wall of the insert sleeve (25), and the left side of the outer surface of the connecting sleeve (26) extends into the interior of the third screening cylinder (23) through the insertion port.

3. The plastic raw material screening equipment for protective film production according to claim 2, characterized in that: The connecting sleeve (26) includes: The guide cylinder shell (261) has its left end inserted into the inner cavity of the third screening cylinder (23) through a socket. A filter screen cover (263) is fixedly connected to the left end of the guide cylinder shell (261), and the filter screen cover (263) extends into the interior of the third screening cylinder (23). Built-in suction pump (262), the outer surface of which is inserted into the left end of the inner wall of the guide cylinder shell (261), and the external tube of the built-in suction pump (262) extends to the outside of the guide cylinder shell (261); Built-in push cylinder (264), the left end of which is slidably connected to a traction link, and the outer surface of the built-in push cylinder (264) is fixedly connected to the left side of the inner cavity of the guide cylinder shell (261); The inner impact ring (265) has its outer surface slidably connected to the inner wall of the filter screen (263), and the left end of the traction rod is inserted into the inner cavity of the inner impact ring (265) through a socket.

4. The plastic raw material screening equipment for protective film production according to claim 2, characterized in that: The processing unit (1) further includes: The bottom discharge pipe (13) is inserted into the bottom of the outer surface of the diversion box shell (11) through a port, and the inner cavity of the diversion box shell (11) is uniformly provided with partition grooves (12). Side guide rail (14), the left end of which is inserted into the left side of the outer surface of the diversion box housing (11); The top of the control vertical plate (15) is fixedly connected to the right side of the outer surface of the side rotating machine (24), and the bottom of the outer surface of the control vertical plate (15) is slidably connected to the inner wall of the side guide rail (14) through a traction device. The control component (4) is located on the front and rear sides of the inner cavity of the diversion box shell (11) and is used to pull the folded cylinder structure of the screening component (2).

5. The plastic raw material screening equipment for protective film production according to claim 4, characterized in that: The control component (4) includes: The guide plate (41) has an outer surface that is inserted into the inner cavity of the diversion box shell (11) through a groove, and the inner cavity of the guide plate (41) is provided with a horizontal slide rail (42). The end motor (43) has friction balls (44) evenly arranged on the side of its outer surface near the guide plate (41). The outer surface of the friction balls (44) is in rolling connection with the back of the outer surface of the guide plate (41).

6. The plastic raw material screening equipment for protective film production according to claim 5, characterized in that: The control component (4) further includes: Adjusting rod (45), one end of the adjusting rod (45) away from the diverter housing (11) is inserted into the middle of the outer surface of the end motor (43), and the outer surface of the adjusting rod (45) is slidably connected to the inner cavity of the guide plate (41) through the horizontal slide rail (42), and the front end of the adjusting rod (45) extends into the interior of the diverter housing (11); The guide shaft (46) has its back side of its outer surface fixedly connected to the end of the adjusting link (45) away from the end motor (43). Connecting clamps (47) are symmetrically arranged on both sides of the outer surface of the guide shaft (46).

7. The plastic raw material screening equipment for protective film production according to claim 1, characterized in that: The guide component (3) includes: Feeding cylinder (31), the top of which is fixedly connected to a funnel flare (33). The top end of the bent tube (32) is inserted into the bottom end of the feeding cylinder (31), and the bottom end of the bent tube (32) is inserted into the axis of the inner cavity of the first screening cylinder (21) through the insertion interface. The filter plug (35) is fixedly connected to the axial center of the inner wall of the funnel flare (33) on its outer surface.

8. The plastic raw material screening equipment for protective film production according to claim 7, characterized in that: The guide component (3) further includes: A stirring motor (36) is fixedly connected to the ceiling via a connector on its outer surface. An extension rod (37) is inserted into the outer surface of the rotating shaft of the stirring motor (36). The bottom end of the extension rod (37) extends into the interior of the bent pipe (32). The outer surface of the extension rod (37) is rotatably connected to the axis of the inner wall of the filter plug (35). The outer surface of the striking fan plate (38) is inserted into the outer surface of the extension link (37); The dust collection box (34) has its outer surface inserted into the inner cavity of the feeding cylinder (31), and the air inlet of the dust collection box (34) extends into the interior of the feeding cylinder (31).

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