Plastic color master batch screening and impurity removing system

Abstract

The invention relates to a plastic color master batch screening and impurity removing system and relates to the technical field of plastic color master batch production, the screening and impurity removing system comprises a machine body, a drying and screening mechanism and a scrap iron removing mechanism, and the drying and screening mechanism comprises a conveying belt arranged on the machine body and used for conveying color master batches; the flattening and heating assembly is used for flattening the color master batches and primarily heating the color master batches; the blowing drying assembly is used for blowing hot air to dry the color master batches and removing light impurities in the color master batches, and the scrap iron removing mechanism is used for removing scrap iron in the color master batches dried by blowing the hot air; and the screening assembly is used for screening the color master batch with the scrap iron removed to obtain the color master batch with the required particle size. According to the color master batch production line, color master batches are uniformly spread on the conveying belt through the spreading heating assembly, the air blowing drying assembly is started to dry and clear light impurities at the same time, the scrap iron removing mechanism is used for removing scrap iron, and finally the color master batches meeting the requirements are obtained through screening of the screening assembly, so that the finished product quality of the color master batches is improved.

Description

Technical Field

[0001] The present application relates to the technical field of plastic masterbatch production, and in particular to a plastic masterbatch screening and impurity removal system. Background Art

[0002] Masterbatch, also known as color seed, is a new type of colorant for polymer materials, also known as pigment preparation. Masterbatch is mainly used in plastics. Masterbatch is composed of three basic elements: pigment or dye, carrier and additive. It is an aggregate obtained by uniformly attaching an extraordinary amount of pigment to the resin. It can be called a pigment concentrate, so its tinting power is higher than the pigment itself.

[0003] At present, the domestic production of masterbatch process is to mix molecular wax, plastic particles or plastic powder with color powder or filler at high speed and then put them into the extruder for extrusion and granulation. After the masterbatch is formed, it needs to be dried and sieved to obtain the masterbatch of target particle size.

[0004] The general screening process of masterbatch is: pour a large batch of masterbatch into the vibrating screen plate for vibration screening. The masterbatch will accumulate, collide and squeeze in this process, and the masterbatch will be subjected to a large vibration force, which will cause the surface of the masterbatch to be damaged. In addition, due to mechanical wear such as the cutter, the process causes the inclusion of various impurities such as iron filings, and the removal effect of iron filings and impurities is poor, thereby reducing the quality of the finished masterbatch. Summary of the invention

[0005] In order to improve the finished product quality of masterbatch, the present application provides a plastic masterbatch screening and impurity removal system.

[0006] The plastic masterbatch screening and impurity removal system provided in this application adopts the following technical solutions: The plastic masterbatch screening and impurity removal system comprises a machine body, a drying and screening mechanism and an iron chip removal mechanism arranged on the machine body, wherein the drying and screening mechanism comprises: A conveyor belt, arranged on the machine body and used for conveying masterbatch; A flattening and heating component, used for flattening the masterbatch and for preliminarily heating the masterbatch; The air drying component is used to blow hot air to dry the flattened masterbatch and remove light impurities in the masterbatch. The iron chip removal mechanism is used to remove iron chips in the masterbatch after hot air drying. The screening component is used to screen the masterbatch after removing the iron filings to obtain the masterbatch with the required particle size.

[0007] By adopting the above technical scheme, the masterbatch is added to the conveyor belt, the conveyor belt drives the masterbatch to move, the flattening heating component flattens the masterbatch on the conveyor belt and performs preliminary heating at the same time, the heating makes the masterbatch particles accumulated together due to water vapor separate, thereby improving the flattening effect of the masterbatch, and the masterbatch is flattened more evenly; the masterbatch is moved to the air drying component, the air drying component is started to blow hot air to dry the flattened masterbatch, and at the same time, the hot air blows to move the lighter light impurities in the masterbatch upward to achieve removal, then the masterbatch is moved to the iron chip removal mechanism, the iron chip removal mechanism is started to remove the iron chips in the masterbatch, and finally the masterbatch is moved to the screening component for screening, so as to select the masterbatch that meets the required particle size.

[0008] By flattening the heating component, the masterbatch is evenly flattened on the conveyor belt, which greatly improves the efficiency and effect of subsequent drying. The wind drying component is started to dry and also removes light impurities. The iron chip removal mechanism is used to remove iron chips, and the iron chip removal mechanism removes the iron chips after the masterbatch is dried, thereby improving the removal effect of iron chips. Finally, the screening component is used to screen to obtain the masterbatch that meets the requirements. Therefore, the above process is realized by flattening and conveying, which reduces the probability of damage to the surface of the masterbatch due to vibration, and also improves the removal effect of iron chips, thereby improving the finished product quality of the masterbatch, and also improves the efficiency of the masterbatch screening process, and reduces the screening cost.

[0009] Optionally, the flattening heating component includes: A flattening roller, rotatably mounted on the machine body and used to flatten the masterbatch; A heating tube is arranged in the flattening roller and is used to heat the flattening roller and heat the masterbatch; A driving member is used to drive the flattening roller to rotate.

[0010] By adopting the above technical solution, the driving member drives the flattening roller to rotate, the flattening roller flattens the masterbatch, and the heating tube heats the flattening roller at the same time. The flattening roller heats the masterbatch, and because the heating of the flattening roller only removes part of the moisture in the masterbatch, the masterbatch accumulated due to water vapor can be separated. Therefore, the rotating flattening roller does not require very high heat to achieve the required heating effect, which reduces the requirements for the equipment.

[0011] Optionally, a plurality of heat transfer rods for conducting heat are evenly arranged on the flattening roller along its radial and axial directions, and the heat transfer rods extend into the masterbatch and are used to heat the masterbatch.

[0012] By adopting the above technical solution, the heat on the flattening roller is transferred to a plurality of heat transfer rods, and the plurality of heat transfer rods are inserted between the masterbatch particles, thereby further improving the heating effect on the masterbatch, further reducing the heat required to achieve the desired effect, and realizing the energy-saving effect. When the heat transfer rods are inserted between the masterbatch particles, the heat transfer rods heat the masterbatch particles so that the masterbatch particles are separated from each other, and when the heat transfer rods are inserted into the masterbatch particles, a certain impact force is also formed on the accumulated masterbatch particles. The impact force causes the accumulated masterbatch particles to be separated from each other, making the masterbatch flattened more evenly, thereby further improving the subsequent drying efficiency and effect, thereby improving the quality of the finished masterbatch product, and also improving the efficiency of the masterbatch screening process, reducing the screening cost.

[0013] Optionally, the conveyor belt is provided with a plurality of ventilation holes for air to pass through, and the wind drying component comprises: A blowing member is arranged on the machine body and allows hot air to be blown toward the masterbatch through the ventilation holes to dry and remove light impurities; An air suction pipe is arranged on the machine body and located above the conveyor belt; An air suction member is arranged on the air suction pipe; The filter frame is arranged on the suction pipe. The blowing member and the suction member are started simultaneously to allow hot air and light impurities to enter the suction pipe and move the light impurities to the filter frame for collection while the hot air is moved out through the suction member.

[0014] By adopting the above technical solution, the blowing member and the suction member are started at the same time, and the hot air is blown upward through the ventilation holes toward the masterbatch, so as to achieve drying of the masterbatch. At the same time, the light impurities move upward into the suction pipe during the hot air blowing process, and then the impurities enter the filter frame for collection, and the air is blown out through the suction member, thereby greatly improving the drying efficiency and the efficiency and effect of removing impurities, thereby improving the quality of the finished masterbatch, and improving the efficiency of the masterbatch screening process, reducing the screening cost.

[0015] Optionally, a sliding hole is provided on the suction pipe, the filter frame is slidably installed on the sliding hole and is provided with a positioning plate that rests on the suction pipe for positioning, and the positioning plate is provided with a magnet that is adsorbed on the suction pipe for positioning.

[0016] By adopting the above technical solution, the filter frame is removed by pulling the positioning plate for cleaning, and is positioned on the air suction pipe by adsorption by a magnet, thereby further improving the collection effect of impurities and improving the removal effect of impurities.

[0017] Optionally, the screening assembly comprises: Screening plate 1, screening plate 2 and receiving plate are arranged on the machine body from top to bottom and are used to receive the masterbatch on the conveyor belt for screening in sequence and make the particle size of the masterbatch from top to bottom gradually decrease. The masterbatch on the screening plate 2 is the masterbatch particle of the required particle size. Three conveyor belts are arranged on the machine body. The sieve plate 1, the sieve plate 2 and the receiving plate are all in an inclined state and the masterbatch is respectively conveyed to the three conveyor belts for conveying.

[0018] By adopting the above technical scheme, the conveyor belt conveys the masterbatch after the iron filings are removed to the screening plate one for screening, the masterbatch falls to the screening plate two for further screening, and part of the masterbatch continues to fall onto the receiving plate through the screening plate two, so the masterbatch with larger particle size stays on the screening plate one, and the masterbatch with particle size that meets the requirements stays on the screening plate two, and the masterbatch with smaller particle size stays on the receiving plate, and finally the masterbatch continues to roll to the corresponding three conveyor belts for transmission, thereby realizing the screening of the masterbatch, and the masterbatch screening process can be realized without vibration, which reduces the probability of collision and damage between the masterbatch, thereby improving the finished product quality of the masterbatch.

[0019] Optionally, the iron chip removal mechanism includes: A rotating roller is rotatably mounted on the machine body, and the conveyor belt drives the masterbatch after air drying to move to the rotating roller; A rotating member, used for driving the rotating roller to rotate; A plurality of magnetic rods are arranged on the rotating roller in an axial and radial array, and the rotating roller rotates to drive the plurality of magnetic rods to extend into the masterbatch and be used to absorb iron filings; The removal component is arranged on the machine body, and the magnetic rod drives the iron filings away from the masterbatch and close to the removal component, and the iron filings are removed and collected by the removal component.

[0020] By adopting the above technical solution, the rotating member drives the rotating roller to rotate, and the rotating roller drives the multiple magnetic rods to rotate. The multiple magnetic rods are inserted between the masterbatch particles, and the magnetic rods can adsorb iron filings located on the sides of the magnetic rods. The multiple magnetic rods adsorb simultaneously, thereby absorbing the iron filings in the masterbatch. The magnetic rods drive the iron filings to move up away from the masterbatch and close to the removal component. After the removal component contacts the multiple magnetic rods, it is used to remove the iron filings on the magnetic rods, and then the magnetic rods continue to be inserted into the masterbatch to remove the iron filings, thereby greatly improving the removal efficiency and effect of the iron filings in the masterbatch.

[0021] At the same time, the insertion and movement of the magnetic rod further makes the masterbatch flatter more evenly, so that the masterbatch is more efficient and effective when entering the screening component for screening, thereby improving the quality of the finished masterbatch, and improving the efficiency of the masterbatch screening process and reducing the screening cost.

[0022] Optionally, the removal component includes: A removal plate is arranged on the machine body and located on one side of the rotating roller, and a plurality of removal holes with the same width as the diameter of the magnetic rod are opened on the removal plate, and when the magnetic rod passes through the removal holes, the iron filings on the magnetic rod are scraped off and dropped onto the removal plate; The collecting box is arranged on the machine body and is located on the side of the removing plate away from the rotating roller. The removing plate is in an inclined state and is used to guide the fallen iron filings to the collecting box for collection.

[0023] By adopting the above technical solution, the rotation of the magnetic rod drives the iron filings close to the removal plate, and the magnetic rod enters the removal hole. As the magnetic rod rotates, the removal plate scrapes the iron filings on the magnetic rod, so that the iron filings on the magnetic rod are gradually concentrated until the magnetic rod is rotated out of the removal hole, and the iron filings remain on the removal plate. The removal plate is in an inclined state, which makes the iron filings move downward to the collection box for collection, thereby achieving the removal of the iron filings on the magnetic rod.

[0024] Optionally, an elastic mounting block is provided on the end of the removal hole away from the rotating roller, and two elastic scraping blocks are provided on the end of the mounting block close to the rotating roller. After the magnetic rod rotates to the removal hole, it squeezes the two scraping blocks and then moves between the two scraping blocks and rotates out of the removal hole, squeezing the mounting block.

[0025] By adopting the above technical solution, the magnetic rod squeezes the two scraping blocks and moves between the two scraping blocks. The two scraping blocks can scrape the iron filings on the side walls that are not in contact with the removal hole until the magnetic rod continues to rotate and squeezes the mounting block, so that the magnetic rod is separated from the scraping block and the mounting block, so that the iron filings remain on the removal plate, thereby further improving the removal effect of the iron filings on the magnetic rod and improving the quality of the masterbatch finished product.

[0026] Optionally, guide blocks are provided on the removal plate and on both sides of the removal hole, and inclined guide surfaces are provided on the guide blocks. The guide blocks are used to scrape iron filings on the magnetic rod and guide the iron filings to the removal plates located on both sides of the removal hole.

[0027] By adopting the above technical solution, after the removal plate scrapes off the iron filings on the magnetic rod, since the removal hole is for the magnetic rod to pass through, during the rotation of the magnetic rod, when the magnetic rod just enters the removal hole, the gap between the magnetic rod and the removal hole is the largest, and this gap gradually becomes smaller as the magnetic rod rotates. Because the magnetic rod needs to pass through, this gap always exists, causing the scraped iron filings to easily fall through this gap, thereby reducing the removal effect of the iron filings; The iron filings on the magnetic rod are scraped off by the guide block. Due to the guiding effect of the guide surface, the scraped iron filings are moved to the removal plates located on both sides of the removal hole, and then the inclined removal plates can guide the iron filings to the collection box for collection. Therefore, by guiding the iron filings away from the removal hole, the probability of iron filings falling from this gap is reduced, the removal effect of the iron filings is further improved, and the quality of the masterbatch finished product is improved.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: The masterbatch is evenly spread on the conveyor belt by the flattening heating component, the wind drying component is started to dry and remove light impurities, the iron filings removal mechanism is used to remove iron filings, and finally the masterbatch that meets the requirements is screened by the screening component. Therefore, the above process is realized by flattening and conveying, which reduces the probability of damage to the surface of the masterbatch due to vibration and improves the removal effect of iron filings, thereby improving the quality of the finished masterbatch, and also improves the efficiency of the masterbatch screening process and reduces the screening cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural diagram of the screening and impurity removal system; Figure 2 It is a three-dimensional structural diagram of the air drying component in the screening and impurity removal system; Figure 3 It is a three-dimensional structural diagram of the iron chip removal mechanism in the screening and impurity removal system; Figure 4 yes Figure 3 The enlarged schematic diagram of the middle A part; Figure 5 It is a schematic diagram of the three-dimensional structure of the screening component in the screening and impurity removal system.

[0030] : 1. Machine body; 2. Drying and screening mechanism; 21. Conveyor belt; 3. Flattening and heating assembly; 31. Flattening roller; 32. Driving member; 33. Heat transfer rod; 4. Air-blowing and drying assembly; 41. Blowing member; 42. Suction pipe; 43. Filter frame; 44. Suction member; 45. Sliding hole; 46. Positioning plate; 47. Enlarged end; 48. Magnet; 49. Heating wire; 5. Iron chip removal mechanism; 51. Rotating roller; 52. Rotating member; 53. Magnetic rod; 6. Removal assembly; 61. Removal plate; 62. Collecting box; 63. Removal hole; 64. Mounting block; 65. Scraping block; 66. Guide block; 7. Screening assembly; 71. Screening plate one; 72. Screening plate two; 73. Receiving plate; 74. Conveyor belt. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-5 This application is described in further detail.

[0032] The embodiments of the present application disclose a plastic masterbatch screening and impurity removal system.

[0033] Reference Figure 1 The plastic masterbatch screening and impurity removal system includes a body 1, a drying and screening mechanism 2 and an iron chip removal mechanism 5 arranged on the body 1, the drying and screening mechanism 2 is used for conveying, drying, removing light impurities and screening the masterbatch, and the iron chip removal mechanism 5 is used for removing iron chips from the masterbatch to obtain masterbatch particles of a desired particle size.

[0034] The drying and screening mechanism 2 includes a conveyor belt 21, a flattening and heating component 3, and an air drying component 4. The conveyor belt 21 is installed on the machine body 1, and a fixed motor for driving the conveyor belt 21 to move is fixedly installed on the machine body 1. The conveyor belt 21 is evenly provided with a plurality of ventilation holes for air to pass through but the masterbatch cannot pass through; the conveyor belt 21 transports the masterbatch to the flattening and heating component 3, the air drying component 4 and the iron chip removal mechanism 5 in sequence, the flattening and heating component 3 is used to flatten the masterbatch and to preliminarily heat the masterbatch, the air drying component 4 is used to blow hot air to dry the flattened masterbatch and can remove light impurities in the masterbatch, and the iron chip removal mechanism 5 is used to remove iron chips in the masterbatch after hot air drying.

[0035] The flattening and heating assembly 3 includes a flattening roller 31, a heating tube and a driving member 32. The flattening roller 31 is horizontally and rotatably mounted on the machine body 1 and is located above the conveyor belt 21. The axial direction of the flattening roller 31 is perpendicular to the direction in which the conveyor belt 21 conveys the masterbatch. Both ends of the flattening roller 31 extend to both sides of the conveyor belt 21. The flattening roller 31 rotates to flatten the masterbatch. The heating tube is fixedly mounted in the flattening roller 31 and is used to heat the flattening roller 31.

[0036] A plurality of heat transfer rods 33 are fixedly installed at intervals along the axial and radial directions of the flattening roller 31 on the outer wall thereof. The heat transfer rods 33 extend into the flattening roller 31 and are used for conducting heat. The axis of the heat transfer rods 33 is perpendicular to the axis of the flattening roller 31. The flattening roller 31 rotates to drive the heat transfer rods 33 to extend into the masterbatch, so that the plurality of heat transfer rods 33 and the flattening roller 31 cooperate to heat the masterbatch, so that the moisture on the masterbatch evaporates, reducing the probability of the masterbatch particles being accumulated due to moisture, and making the masterbatch particles separate from each other. Moreover, when the heat transfer rods 33 are inserted into the masterbatch particles, a certain impact is formed on the masterbatch, and the impact causes the accumulated masterbatch particles to separate from each other, making the masterbatch flattened more evenly. Moreover, the rotation speed of the heat transfer rods 33 is relatively slow, so the impact force on the masterbatch is relatively small, so the probability of the masterbatch surface being damaged is relatively small, and the subsequent drying efficiency and effect are also improved.

[0037] The driving member 32 is a driving motor. The driving member 32 is fixedly mounted on the machine body 1 and the output shaft is coaxially connected with the flattening roller 31. The rotation speed of the flattening roller 31 is closely related to the moving speed of the conveyor belt 21. The faster the conveyor belt 21 is, the faster the rotation speed of the flattening roller 31 is. On the contrary, the slower the conveyor belt 21 is, the slower the rotation speed of the flattening roller 31 is. The driving member 32 drives the flattening roller 31 to rotate. The rotation of the flattening roller 31 drives the heat transfer rod 33 to rotate. The flattening roller 31 flattens the masterbatch and heats the masterbatch in contact with it. A plurality of heat transfer rods 33 are inserted between the masterbatch particles, so as to further flatten and heat the masterbatch particles.

[0038] Reference Figure 1 and Figure 2 The wind drying component 4 includes a blowing piece 41, an air suction pipe 42, a filter frame 43 and an air suction piece 44. The blowing piece 41 is a fan. The blowing piece 41 is fixedly installed on the body 1 and is located on the inner side of the conveyor belt 21. At the same time, the air outlet of the blowing piece 41 is upward. A heating wire 49 is fixedly installed on the body 1 and below the blowing piece 41. When the blowing piece 41 is started, the air heated by the heating wire 49 is blown toward the masterbatch particles through the ventilation holes, so as to dry the masterbatch particles, and at the same time, it can also blow the light impurities mixed in the masterbatch upward, such as dust and other impurities.

[0039] The suction pipe 42 is U-shaped and its two ends are opened vertically downward. A truncated cone-shaped enlarged end 47 is fixedly installed at one end of the suction pipe 42 close to the flattening roller 31. The enlarged end 47 increases the area for impurities to enter the suction pipe 42. The enlarged end 47 is arranged corresponding to the blowing piece 41, so that hot air and light impurities moving upward can enter, and the other end opening of the suction pipe 42 is offset from the blowing piece 41 and is located on the side of the blowing piece 41 away from the flattening roller 31; the suction piece 44 is a fan, and the suction piece 44 is fixedly installed at the opening of one end of the suction pipe 42 that is offset from the blowing piece 41, and the air outlet of the suction piece 44 is vertically downward.

[0040] A sliding hole 45 is provided on the suction pipe 42 located above the suction member 44, and a filter frame 43 is horizontally slidably installed on the sliding hole 45. The filter frame 43 is used to collect light impurities and allow air to pass through. A positioning plate 46 that rests against the outer wall of the suction pipe 42 is fixedly installed on the filter frame 43, and a magnet 48 is fixed on the outer wall of the suction pipe 42 for adsorbing and positioning the positioning plate 46.

[0041] The blowing member 41 and the suction member 44 are started at the same time, so that the hot air dries the masterbatch with hot air, and at the same time, the light impurities move upward and the hot air enters the suction pipe 42, and the hot air and the light impurities first move upward and then move downward to the filter frame 43, and the light impurities stay in the filter frame 43 for collection, while the hot air is removed through the suction member 44, and part of the removed hot air can continue to be blown to the masterbatch for drying, thereby improving the drying efficiency and effect of the masterbatch.

[0042] Reference Figure 1 and Figure 3 The iron chip removal mechanism 5 includes a rotating roller 51, a rotating member 52, a plurality of magnetic rods 53 and a removal component 6. The rotating roller 51 is rotatably mounted on the machine body 1, and the axes of the rotating roller 51 and the flattening roller 31 are parallel; the rotating member 52 is a rotating motor, which is fixedly mounted on the machine body 1 and the output shaft is connected to the rotating roller 51. The rotation speed of the rotating roller 51 is closely related to the moving speed of the conveyor belt 21. The faster the speed of the conveyor belt 21, the faster the rotation speed of the rotating roller 51. Conversely, the slower the speed of the conveyor belt 21, the slower the rotation speed of the rotating roller 51. The conveyor belt 21 transports the dried masterbatch to the rotating roller 51.

[0043] A plurality of magnetic rods 53 are fixedly mounted on the rotating roller 51 and are spaced apart axially and radially around the rotating roller 51. The axis of the magnetic rod 53 is perpendicular to the axis of the rotating roller 51. The magnetic rod 53 is magnetic and is inserted between the masterbatch particles and cooperated to absorb iron filings.

[0044] The removal assembly 6 is arranged on the machine body 1, and the magnetic rod 53 drives the iron filings away from the masterbatch and close to the removal assembly 6, so that the iron filings located on the magnetic rod 53 are removed and collected by the removal assembly 6. The removal assembly 6 includes a removal plate 61 and a collection box 62, wherein the removal plate 61 is fixedly mounted on the machine body 1 and located on one side of the rotating roller 51, and the collection box 62 is clamped and mounted on the machine body 1 and located on the side of the removal plate 61 away from the rotating roller 51.

[0045] Reference Figure 3 and Figure 4 The removal plate 61 is tilted downward and its height close to the rotating roller 51 is higher than its height close to the collecting box 62. The removal plate 61 is located above the collecting box 62. The removal plate 61 is provided with a plurality of removal holes 63 for a plurality of magnetic rods 53 to pass through on the side close to the rotating roller 51. The width of the removal holes 63 is the same as the diameter of the magnetic rod 53. When the magnetic rod 53 passes through the removal holes 63, the iron filings on the magnetic rod 53 are scraped off by the removal plate 61, and the fallen iron filings fall downward into the collecting box 62 for collection.

[0046] An elastic mounting block 64 is fixedly mounted on one end of each removal hole 63 away from the rotating roller 51. The upper surface of the mounting block 64 extends above the removal plate 61 and is provided with two scraping blocks 65. The two scraping blocks 65 are located on both sides of the axis of the magnetic rod 53 and are close to each other away from one end of the mounting block 64. The two scraping blocks 65 are elastic. When the magnetic rod 53 rotates to the removal hole 63, the magnetic rod 53 presses one end of the two scraping blocks 65 away from the mounting block 64 and pushes the two scraping blocks 65 away from each other, so that the magnetic rod 53 moves between the two scraping blocks 65. The two scraping blocks 65 rebound and press against the magnetic rod 53. Therefore, the two scraping blocks 65 can scrape the iron filings on the side wall of the magnetic rod 53 that is not in contact with the removal hole 63, thereby further improving the scraping effect of the iron filings on the magnetic rod 53.

[0047] Guide blocks 66 are provided on the removal plate 61 and on both sides of each removal hole 63. An inclined guide surface is formed on the upper surface of the guide block 66. When the magnetic rod 53 rotates into the removal hole 63, the two guide blocks 66 cooperate to scrape the iron filings on the magnetic rod 53. At the same time, the scraped iron filings are guided to the removal plate 61 on both sides of the removal hole 63 through the action of the two guide surfaces, thereby reducing the probability of the iron filings falling through the removal hole 63. At the same time, the guide block 66 extends to the mounting block 64, and the two scraping blocks 65 are located above the guide block 66, so that the guide block 66 can also prevent the iron filings scraped by the scraping block 65 from entering the removal hole 63, so that the scraped iron filings can be collected in the collection box 62 through the removal plate 61 as much as possible.

[0048] The end of the magnetic rod 53 away from the rotating roller 51 squeezes the mounting block 64 and then rotates out of the removal hole 63, thereby reducing the gap between the magnetic rod 53 and the removal hole 63 when it rotates out, reducing the probability of iron filings falling from the removal hole 63, and improving the removal and collection effect of iron filings; the two scraping blocks 65 are provided with a guide angle that facilitates the magnetic rod 53 to squeeze into between the two scraping blocks 65.

[0049] Reference Figure 1 and Figure 5 The drying and screening mechanism 2 also includes a screening component 7, which is used to screen the masterbatch after removing the iron filings to obtain the masterbatch of the required particle size; the screening component 7 includes a screening plate 1 71, a screening plate 2 72, a receiving plate 73 and three conveyor belts 74, the screening plate 1 71, the screening plate 2 72 and the receiving plate 73 are vertically spaced and fixedly installed on the body 1 and are inclined along the same inclination direction, the screening plate 1 71 is located at the highest point and receives the masterbatch after removing the iron filings on the conveyor belt 21, the three conveyor belts 74 are vertically spaced and respectively corresponding to the screening plate 1 71, the screening plate 2 72 and the receiving plate 73, and the height of the screening plate 1 71 close to the conveyor belt 74 is lower than the height close to the conveyor belt 21.

[0050] Screening plate 1 71 and screening plate 2 72 are both provided with screening holes with gradually decreasing diameters. The masterbatch screened by screen plate 1 71 falls downward onto screen plate 2 72, and the masterbatch on screen plate 2 72 falls onto the receiving plate after screening, so that the particle size of the masterbatch on screen plate 1 71, screen plate 2 72 and receiving plate 73 gradually becomes smaller. At the same time, the masterbatch on screen plate 1 71, screen plate 2 72 and receiving plate 73 respectively falls downward onto three conveyor belts 74 under the action of gravity, and the masterbatch on screen plate 2 72 is the masterbatch of the required particle size, so the masterbatch of the required particle size is selected for collection, thereby reducing the probability of damage to the surface of the masterbatch due to vibration, thereby improving the quality of the finished masterbatch.

[0051] The working principle of the embodiment of the present application is as follows: The masterbatch is added to the conveyor belt 21 for transportation, the flattening roller 31 rotates to flatten the masterbatch, and at the same time, multiple heat transfer rods 33 are inserted between the masterbatch particles for heating, so that the masterbatch particles are separated from each other and evenly flattened on the conveyor belt 21. The masterbatch moves to the suction pipe 42, the blowing member 41 and the suction member 44 are started at the same time, and the hot air blows upward to the masterbatch for drying, and the light impurities are moved upward to the filter frame 43 for collection.

[0052] The masterbatch moves to the rotating roller 51, and the rotating roller 51 rotates to drive multiple magnetic rods 53 to be inserted between the masterbatch particles, so as to achieve the adsorption of iron filings in the masterbatch. After the magnetic rod 53 adsorbs the iron filings, it rotates upward, so that the magnetic rod 53 passes through the removal hole 63. Therefore, the removal plate 61 is used to scrape the iron filings on the magnetic rod 53, so that the iron filings fall downward to the collection box 62 for collection. At the same time, after the magnetic rod 53 rotates, it squeezes the two scraping blocks 65 and moves between the two scraping blocks 65. Then, the magnetic rod 53 squeezes the mounting block 64 and the two scraping blocks 65 and moves out of the removal hole 63. Therefore, the scraping block 65 and the mounting block 64 simultaneously scrape the iron filings on the magnetic rod 53, so that the iron filings are moved to the collection box 62 for collection, thereby achieving the removal of iron filings in the masterbatch.

[0053] The masterbatch continues to move to the screening plate 71 for screening, and then moves to the screening plate 72, and finally moves to the receiving plate 73. At the same time, the masterbatch on the screening plate 71, the screening plate 72 and the receiving plate 73 respectively falls downward onto the three conveyor belts 74 for transportation. The masterbatch located on the screening plate 72 is the masterbatch of the required particle size, thereby improving the quality of the finished masterbatch, and improving the efficiency of the masterbatch screening process, reducing the screening cost.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. Plastic masterbatch screening and impurity removal system, characterized by: The invention comprises a machine body (1), a drying and screening mechanism (2) and an iron chip removal mechanism (5) arranged on the machine body (1), wherein the drying and screening mechanism (2) comprises: A conveyor belt (21), arranged on the machine body (1) and used for conveying masterbatch; A flattening and heating component (3) is used to flatten the masterbatch and to preliminarily heat the masterbatch; The air drying component (4) is used to blow hot air to dry the masterbatch after it has been flattened and to remove light impurities in the masterbatch. The iron chip removal mechanism (5) is used to remove iron chips in the masterbatch after it has been dried with hot air. The screening component (7) is used to screen the masterbatch after the iron filings are removed to obtain the masterbatch with the required particle size.

2. The plastic masterbatch screening and impurity removal system according to claim 1 is characterized by: The flattening and heating component (3) comprises: A flattening roller (31) is rotatably mounted on the machine body (1) and is used to flatten the masterbatch; A heating tube, disposed in the flattening roller (31) and used to heat the flattening roller (31) and to heat the masterbatch; The driving member (32) is used for driving the flattening roller (31) to rotate.

3. The plastic masterbatch screening and impurity removal system according to claim 2 is characterized by: A plurality of heat transfer rods (33) for conducting heat are evenly arranged on the flattening roller (31) along its radial direction and axial direction. The heat transfer rods (33) extend into the masterbatch and are used to heat the masterbatch.

4. The plastic masterbatch screening and impurity removal system according to claim 1 is characterized by: The conveyor belt (21) is provided with a plurality of ventilation holes for air to pass through, and the air-blowing drying component (4) comprises: A blowing member (41) is arranged on the machine body (1) and allows hot air to be blown toward the masterbatch through the ventilation holes to dry it and remove light impurities; An air suction pipe (42) is arranged on the machine body (1) and is located above the conveyor belt (21); An air suction member (44) is arranged on the air suction pipe (42); The filter frame (43) is arranged on the suction pipe (42), and the blowing member (41) and the suction member (44) are started simultaneously to allow hot air and light impurities to enter the suction pipe (42) and to move the light impurities to the filter frame (43) for collection while the hot air is moved out through the suction member (44).

5. The plastic masterbatch screening and impurity removal system according to claim 4 is characterized by: The air suction pipe (42) is provided with a sliding hole (45), the filter frame (43) is slidably mounted on the sliding hole (45) and is provided with a positioning plate (46) that abuts against the air suction pipe (42) for positioning, and the positioning plate (46) is provided with a magnet (48) that is adsorbed on the air suction pipe (42) for positioning.

6. The plastic masterbatch screening and impurity removal system according to claim 1 is characterized by: The screening assembly (7) comprises: Screening plate 1 (71), screening plate 2 (72) and receiving plate (73) are arranged on the machine body (1) at intervals from top to bottom and are used to receive the masterbatch on the conveyor belt (21) and screen them in sequence so that the particle size of the masterbatch gradually decreases from top to bottom, and the masterbatch on the screening plate 2 (72) is the masterbatch particle of the required particle size; Three conveyor belts (74) are arranged on the machine body (1); the sieve plate 1 (71), the sieve plate 2 (72) and the receiving plate (73) are all in an inclined state and convey the masterbatch to the three conveyor belts (74) for conveyance.

7. The plastic masterbatch screening and impurity removal system according to claim 1 is characterized by: The iron chip removal mechanism (5) comprises: A rotating roller (51) is rotatably mounted on the machine body (1), and the conveyor belt (21) drives the masterbatch after air drying to move to the rotating roller (51); A rotating member (52) for driving the rotating roller (51) to rotate; A plurality of magnetic rods (53) are arranged in an array on the rotating roller (51) along the axial direction and radial direction of the rotating roller (51), and the rotating roller (51) rotates to drive the plurality of magnetic rods (53) to extend into the masterbatch and be used to absorb iron filings; The removal component (6) is arranged on the machine body (1), and the magnetic rod (53) drives the iron filings away from the masterbatch and close to the removal component (6) and removes and collects the iron filings through the removal component (6).

8. The plastic masterbatch screening and impurity removal system according to claim 7 is characterized in that: The removal component (6) comprises: a removal plate (61) disposed on the machine body (1) and located on one side of the rotating roller (51); the removal plate (61) is provided with a plurality of removal holes (63) having a width equal to the diameter of the magnetic rod (53); when the magnetic rod (53) passes through the removal holes (63), the iron filings on the magnetic rod (53) are scraped off and dropped onto the removal plate (61); The collecting box (62) is arranged on the machine body (1) and is located on a side of the removing plate (61) away from the rotating roller (51); the removing plate (61) is in an inclined state and is used to guide fallen iron filings to the collecting box (62) for collection.

9. The plastic masterbatch screening and impurity removal system according to claim 8, characterized in that: An elastic mounting block (64) is arranged on one end of the removal hole (63) away from the rotating roller (51), and two elastic scraping blocks (65) are arranged on one end of the mounting block (64) close to the rotating roller (51). The magnetic rod (53) rotates to the removal hole (63) and squeezes the two scraping blocks (65). Then, the magnetic rod (53) moves to between the two scraping blocks (65) and rotates out of the removal hole (63). Then, the mounting block (64) is squeezed and rotated out.

10. The plastic masterbatch screening and impurity removal system according to claim 8, characterized in that: Guide blocks (66) are provided on the removal plate (61) and on both sides of the removal hole (63); the guide blocks (66) are provided with inclined guide surfaces; the guide blocks (66) are used to scrape iron filings on the magnetic rod (53) and guide the iron filings to the removal plate (61) located on both sides of the removal hole (63).

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