A plastic masterbatch production equipment

Abstract

The present invention relates to the technical field of masterbatch production, and more particularly to a plastic masterbatch production device, comprising a granulation mechanism, the granulation mechanism comprising a motor, a barrel, a feed pipe, an electromagnetic induction coil, an auger, a water cylinder, a forming pipe, a primary rotating shaft, and a cutter. The motor is fixedly connected to the center of the upper end face of the barrel, and the feed pipe is connected to the left side of the upper end face of the barrel. The electromagnetic induction coil is wound around the outer surface of the barrel. The auger is located at the center of the barrel, and the output shaft of the motor passes through the barrel and is fixedly connected to the upper end of the auger. The water cylinder is fixedly connected to the lower end face of the barrel, and the upper and lower ends of the primary rotating shaft are movably connected to sealed bearings at the center of the upper and lower end faces of the water cylinder, respectively. The plastic masterbatch production device improves the cooling and forming effect of the masterbatch by combining water cooling and air cooling to prevent it from sticking to the cutter after cutting. The masterbatch is screened by a screening mechanism, thereby improving the quality of the masterbatch.

Description

Technical Field

[0001] The invention relates to the technical field of masterbatch production, in particular to a device for producing plastic masterbatch. Background Art

[0002] A masterbatch is a polymer obtained by uniformly loading an unusual amount of pigment onto a resin. The masterbatch technology typically employed is a wet process. Masterbatch materials undergo aqueous grinding, phase transfer, water washing, drying, and granulation to ensure product quality. Furthermore, while the pigment is being ground, a series of masterbatch technical tests should be conducted, such as determining the fineness of the sand-milled slurry, its diffusion properties, its solids content, and the fineness of the colorant. Masterbatches generally consist of three components: a colorant, a carrier, and a dispersant. After mixing in a high-speed mixer, crushing, and extrusion into granules, masterbatches are used in plastics processing, offering significant advantages such as high concentration, good dispersion, and cleanliness.

[0003] The existing patent (Announcement No.: CN209078948U) discloses an energy-saving masterbatch production device, comprising a housing, a sleeve fixedly connected to the center of the upper end of the housing through a first axial hole, the upper end of the sleeve passing through the first axial hole and fixedly connected to a feed hopper, a rotating shaft vertically disposed within the sleeve, a spiral blade fixedly connected to the shaft wall of the rotating shaft, a cross plate fixedly connected to the inner edge of the sleeve's lower opening, a plurality of annularly distributed discharge holes extending between the upper and lower ends of the cross plate, and the upper openings of the discharge holes are tapered, a cover plate is provided at the upper end of the feed hopper, the left and right sides of the cover plate are fastened to the side walls of the feed hopper by latches, and one end of the rotating shaft extends into the interior of the feed hopper and fixedly connected to a spline gauge. This utility model can effectively save energy consumption during masterbatch production, increase the production speed of masterbatch, and cool the formed masterbatch to improve the production quality of the masterbatch.

[0004] However, the following issues were not considered when using this energy-saving masterbatch production equipment:

[0005] The masterbatch in the sleeve is directly extruded through the spiral blades for slitting, and is only cooled by the exhaust fan, which has a poor cooling effect. As a result, the masterbatch is still sticky during the slitting process, and is easily adhered to the cutter and the mesh plate, thus affecting the slitting effect. The mesh plate does not have a screening function. Due to the insufficient pelletizing accuracy, the masterbatch sizes are different, and the gap between the masterbatches is large. This will cause inaccurate measurement, and the mixing of masterbatches of different sizes will affect the quality of the masterbatch. Summary of the Invention

[0006] The object of the present invention is to provide a plastic masterbatch production device to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a plastic masterbatch production device, comprising a granulation mechanism, the granulation mechanism comprising a motor, a barrel, a feed pipe, an electromagnetic induction coil, an auger, a water cylinder, a forming tube, a primary rotating shaft and a cutter, the motor is fixedly connected to the center position of the upper end surface of the barrel, and the feed pipe is connected to the left side of the upper end surface of the barrel, the electromagnetic induction coil is wound around the outer surface of the barrel, the auger is located at the center position inside the barrel, and the output shaft of the motor passes through the barrel and is fixedly connected to the upper end of the auger. The water cylinder is fixedly connected to the lower end surface of the material cylinder, and the upper and lower ends of the first-level rotating shaft are movably connected to the sealed bearings at the center positions of the upper and lower end surfaces of the water cylinder respectively. The upper end of the first-level rotating shaft passes through the upper end surface of the water cylinder and is fixedly connected to the lower end of the auger, and the lower end of the first-level rotating shaft passes through the lower end surface of the water cylinder and is fixedly connected to the center position of the cutter. A plurality of forming tubes are equidistantly arranged in a ring near the inner wall of the water cylinder, and the upper and lower ends of the forming tubes pass through the upper and lower end surfaces of the water cylinder respectively. A screening mechanism is provided under the water cylinder.

[0008] Preferably, an insulating heat-insulating layer is fixedly connected between the electromagnetic induction coil and the outer surface of the barrel, and an annular cavity is opened inside the barrel body of the barrel, and a heat-insulating layer is fixedly connected inside the annular cavity.

[0009] Preferably, a plurality of air holes are equidistantly provided in a circular pattern on the outer surface of the upper end of the water cylinder, and blades are fixedly connected vertically and equidistantly to the outer surface of the first-stage rotating shaft. The cooling water level in the water cylinder is lower than the height of the air holes, and the uppermost blade is higher than the cooling water level.

[0010] Preferably, the screening mechanism includes a box body, a discharge port, a sieve plate, a fixing ring and an axis hole, the box body has a cylindrical cavity structure, and the center position of the upper end surface of the box body is connected to the lower end surface of the water cylinder and is fixedly connected to the water cylinder, the sieve plate has a conical structure, and the center position of the upper end of the sieve plate is fixedly connected to the fixing ring, and the center position of the fixing ring is provided with an axis hole, the sieve plates are arranged at equal intervals, and the sieve holes of the three sieve plates decrease successively, the center position of the lower end surface of the cutter at the lower end of the water cylinder is fixedly connected to a secondary rotating shaft, and the fixing ring at the center position of the upper end of each sieve plate is sleeved on the secondary rotating shaft, and the box position at the left and right ends of the outer edge of each sieve plate is provided with a discharge port, and a limiting block is provided in the discharge port, and the left and right ends of the outer edge of each sieve plate are fixedly connected to the limiting block, a support plate is fixedly connected below the discharge port, and a receiving groove is placed on the support plate.

[0011] Preferably, each of the secondary rotating shafts above the fixing ring is fixedly connected to a fixing block on both sides, and the lower end face of each fixing block is fixedly connected to a protrusion, the lower end of the protrusion is a hemispherical structure, and the upper end face of the fixing ring is fixedly connected to a plurality of protrusions at equal intervals in a corresponding ring, the lower end face of the limit block is provided with a cylindrical hole, and a limiting rod is provided in the cylindrical hole, the lower end of the limit rod is fixedly connected to the lower end face of the discharge port, the outer surface of the limit rod is provided with a spring, and the upper end of the spring is fixedly connected to the lower end face of the limit block, and the lower end of the spring is fixedly connected to the lower end face of the discharge port.

[0012] Preferably, the outer side surface of each fixed block is fixedly connected to a scraper, and the lower end surface of the scraper is in contact with the upper end surface of the screen plate, the fan blade is fixedly connected below the secondary rotating shaft, and the lower end of the secondary rotating shaft is movably connected to the bearing at the center position of the lower end surface inside the box body, the lower end of the box body is fixedly connected to the bottom plate, and the lower end surface of the bottom plate is evenly provided with ventilation holes that penetrate to the lower end surface inside the box body, and the four corner positions of the lower end surface of the bottom plate are fixedly connected to universal wheels.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. A water cylinder is set on the outside of the forming tube. The cooling water in the water cylinder cools the masterbatch in the forming tube. When the masterbatch is extruded through the forming tube, it is also blown by the fan blades at the bottom of the box to improve the cooling effect of the masterbatch. After the cutter cuts the masterbatch, the masterbatch is not easy to stick to the cutter, thereby improving processing efficiency.

[0015] 2. A screening mechanism is set below the granulation mechanism. The motor of the granulation mechanism drives the sieve plate of the screening mechanism to vibrate up and down, thereby achieving efficient screening of the masterbatch, so that the masterbatch enters the collection tank according to different sizes, improving the quality of the masterbatch and saving electricity at the same time; BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0018] Figure 2 For the present invention Figure 1 AA section view in;

[0019] Figure 3 For the present invention Figure 2 Enlarged view of the screening mechanism in;

[0020] Figure 4 For the present invention Figure 2 BB cross-section in;

[0021] Figure 5 For the present invention Figure 2 Enlarged view of point E in the figure;

[0022] Figure 6 For the present invention Figure 3 Enlarged view of point C in the figure;

[0023] Figure 7 For the present invention Figure 3 Enlarged view of point D in .

[0024] Description of reference numerals:

[0025] 1. Granulating mechanism; 11. Motor; 12. Barrel; 13. Feed pipe; 14. Electromagnetic induction coil; 15. Auger; 16. Water cylinder; 161. Air hole; 17. Forming tube; 18. Primary rotating shaft; 181. Blade; 19. Cutter; 2. Screening mechanism; 21. Box; 22. Discharge port; 23. Screen plate; 24. Fixing ring; 25. Shaft hole; 3. Receiving slot; 31. Support plate; 4. Secondary rotating shaft; 41. Scraper; 42. Fan blade; 43. Fixing block; 431. Bump; 5. Limit block; 51. Cylindrical hole; 52. Spring; 53. Limit rod; 6. Insulation layer; 7. Annular cavity; 71. Insulation layer; 8. Bottom plate; 81. Ventilation hole; 9. Universal wheel. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figures 1 to 7 , the present invention provides a technical solution:

[0028] A plastic masterbatch production device includes a granulation mechanism 1, the granulation mechanism 1 includes a motor 11, a barrel 12, a feed pipe 13, an electromagnetic induction coil 14, an auger 15, a water cylinder 16, a forming tube 17, a primary rotating shaft 18 and a cutter 19, the motor 11 is fixedly connected to the center position of the upper end surface of the barrel 12, and the feed pipe 13 is connected to the left side of the upper end surface of the barrel 12, the electromagnetic induction coil 14 is wound around the outer surface of the barrel 12, the auger 15 is at the center position inside the barrel 12, and the output shaft of the motor 11 passes through the barrel 12 and is fixedly connected to the upper end of the auger 15, the The water cylinder 16 is fixedly connected to the lower end surface of the barrel 12, and the upper and lower ends of the first-level rotating shaft 18 are movably connected to the sealed bearings at the center positions of the upper and lower end surfaces of the water cylinder 16 respectively. The upper end of the first-level rotating shaft 18 passes through the upper end surface of the water cylinder 16 and is fixedly connected to the lower end of the auger 15, and the lower end of the first-level rotating shaft 18 passes through the lower end surface of the water cylinder 16 and is fixedly connected to the center position of the cutter 19. A plurality of forming tubes 17 are equidistantly arranged in a ring near the inner side wall of the water cylinder 16, and the upper and lower ends of the forming tubes 17 pass through the upper and lower end surfaces of the water cylinder 16 respectively. A screening mechanism 2 is provided below the water cylinder 16.

[0029] During operation, raw materials are added to the barrel 12 through the feed pipe 13, the motor 11 is started to drive the auger 15 to rotate, and at the same time, an alternating current is connected to the electromagnetic induction coil 14. The alternating current generates an alternating magnetic field through the electromagnetic induction coil 14, and the auger 15 made of magnetic conductive material is placed therein to cut the alternating magnetic lines of force, thereby generating eddy currents inside the raw materials. The eddy currents cause the atoms inside the raw materials to move irregularly at high speed, and the atoms collide and rub against each other to generate heat energy, thereby heating the raw materials. The raw materials are heated evenly and melted under the action of the electromagnetic induction coil 14, and are pushed into the forming tube 17 inside the water cylinder 16 under the action of the auger 15. Under the action of the cooling water inside the water cylinder 16, the masterbatch raw materials are gradually formed in the forming tube 17 without being placed in the forming tube. In a completely molten state, it is continuously extruded into a forming tube 17 under the action of pressure, so that the extruded masterbatch is in a strip shape. The inner surface of the forming tube 17 is coated with an anti-adhesion coating to avoid the masterbatch raw material sticking to the inner surface of the forming tube 17 and causing blockage. Since the primary rotating shaft 18 is fixedly connected to the lower end of the auger 15, the motor 11 drives the primary rotating shaft 18 to rotate while driving the auger 15, thereby driving the cutter 19 to rotate. The extruded strip masterbatch is cut into masterbatch under the cutting action of the cutter 19. The cooling water can accelerate the cooling and molding of the molten masterbatch raw material, thereby facilitating the cutting of the cutter 19 and preventing the masterbatch from sticking to the cutter 19 due to excessive temperature, thereby improving the cutting effect.

[0030] As an embodiment of the present invention, Figure 2 and Figure 5As shown, an insulating heat-insulating layer 6 is fixedly connected between the electromagnetic induction coil 14 and the outer surface of the barrel 12 , and an annular cavity 7 is opened inside the barrel body of the barrel 12 , and a heat-insulating layer 71 is fixedly connected inside the annular cavity 7 .

[0031] During operation, an insulating and heat-insulating layer 6 is fixedly connected between the electromagnetic induction coil 14 and the outer surface of the barrel 12. The insulating and heat-insulating layer 6 can prevent the alternating current in the electromagnetic induction coil 14 from directly acting on the barrel 12 and causing damage to the electrical components on the barrel 12. At the same time, it can prevent the high temperature in the barrel 12 from being conducted to the electromagnetic induction coil 14 and causing damage to the electromagnetic induction coil 14. The setting of the thermal insulation layer 71 can reduce the heat loss during the heating process, so that the masterbatch raw material can be fully and evenly heated, thereby improving the melting effect and avoiding insufficient melting and clogging of the forming tube 17.

[0032] As an embodiment of the present invention, Figure 2 and Figure 4 As shown, a plurality of air holes 161 are equidistantly provided in a circular shape on the outer surface of the upper end of the water cylinder 16, and blades 181 are fixedly connected vertically and equidistantly to the outer surface of the primary rotating shaft 18. The cooling water level in the water cylinder 16 is lower than the height of the air holes 161, and the uppermost blade 181 is higher than the cooling water level.

[0033] During operation, based on the above embodiment, the first-level rotating shaft 18 drives the blades 181 to rotate during the rotation process, thereby stirring the cooling water in the water cylinder 16. Since the cooling water continuously absorbs the heat of the masterbatch raw material in the forming tube 17, the temperature of the cooling water will gradually rise, so the cooling water is continuously stirred by the blades 181 to improve the fluidity of the cooling water, thereby accelerating the cooling rate of the cooling water. In addition, the top blade 181 is higher than the liquid level of the cooling water, so that the blade 181 can exchange the hot air in the water cylinder 16 with the external air during the rotation process, thereby further improving the cooling rate of the cooling water, thereby ensuring the cooling and molding effect of the masterbatch raw material in the forming tube 17, and facilitating cutting into particles.

[0034] As an embodiment of the present invention, Figure 2 、 Figure 3 and Figure 6As shown, the screening mechanism 2 includes a box body 21, a discharge port 22, a sieve plate 23, a fixing ring 24 and an axial hole 25. The box body 21 is a cylindrical cavity structure, and the center position of the upper end surface of the box body 21 is connected to the lower end surface of the water cylinder 16 and is fixedly connected to the water cylinder 16. The sieve plate 23 is a conical structure, and the center position of the upper end of the sieve plate 23 is fixedly connected to the fixing ring 24, and the center position of the fixing ring 24 is provided with an axial hole 25. The sieve plates 23 are arranged at equal distances, and the sieve holes of the three sieve plates 23 are reduced in sequence. The water cylinder 16 is small, and the center position of the lower end surface of the cutter 19 at the lower end is fixedly connected to the secondary rotating shaft 4. The fixing ring 24 at the center position of the upper end of each sieve plate 23 is sleeved on the secondary rotating shaft 4. The box body 21 at the left and right ends of the outer edge of each sieve plate 23 is provided with a discharge port 22, and a limiting block 5 is provided in the discharge port 22. The left and right ends of the outer edge of each sieve plate 23 are fixedly connected to the limiting block 5. A support plate 31 is fixedly connected below the discharge port 22, and a receiving groove 3 is placed on the support plate 31.

[0035] During operation, the cut masterbatch falls on the sieve plate 23. Since the sieve plate 23 is a conical structure and the sieve holes of the three sieve plates 23 are reduced in sequence, the large-particle masterbatch falling on the first sieve plate 23 passes through the uppermost discharge port 22 on the left and right sides of the box body 21 and enters the corresponding receiving groove 3. The medium-particle masterbatch passes through the first sieve plate 23 and falls on the second sieve plate 23, and then enters the corresponding receiving groove 3 through the discharge port 22 in the middle position of the left and right sides of the box body 21. The small-particle masterbatch falls onto the third sieve plate 23 after passing through the first and second sieve plates 23, and enters the corresponding receiving groove 3 through the lowermost discharge port 22 on the left and right sides of the box body 21. Through layer-by-layer screening, masterbatch of different sizes can be distinguished, thereby improving the quality of the masterbatch. The three sieve plates 23 are all slidably connected to the secondary rotating shaft 4 by the fixing ring 24, which provides convenience for subsequently driving the sieve plate 23 to vibrate and improve the screening effect.

[0036] As an embodiment of the present invention, Figure 3 、 Figure 6 and Figure 7 As shown, the left and right sides of the secondary rotating shaft 4 above each of the fixing rings 24 are fixedly connected with a fixing block 43 respectively, and the lower end face of each fixing block 43 is fixedly connected with a protrusion 431, and the lower end of the protrusion 431 is a hemispherical structure, and the upper end face of the fixing ring 24 is fixedly connected with multiple protrusions 431 at equal intervals in a corresponding ring shape, and the lower end face of the limit block 5 is provided with a cylindrical hole 51, and a limiting rod 53 is provided in the cylindrical hole 51, and the lower end of the limit rod 53 is fixedly connected to the lower end face of the discharge port 22, and the outer surface of the limit rod 53 is provided with a spring 52, and the upper end of the spring 52 is fixedly connected to the lower end face of the limit block 5, and the lower end of the spring 52 is fixedly connected to the lower end face of the discharge port 22.

[0037] During operation, in the initial state, the convex block 431 on the lower end face of the fixing block 43 and the convex block 431 on the upper end face of the fixing ring 24 are staggered with each other. Since the secondary rotating shaft 4 is fixedly connected to the center position of the lower end face of the cutter 19, the primary rotating shaft 18 drives the cutter 19 to rotate while driving the secondary rotating shaft 4 to rotate, thereby the electric fixing block 43 rotates, and then drives the convex block 431 on the lower end face of the fixing block 43 and the convex block 431 on the upper end face of the fixing ring 24 to continuously collide with each other, generating an extrusion force on the sieve plate 23, thereby causing the sieve plate 23 to be pressed. The sieve plate 23 is displaced downward, and the left and right ends of the sieve plate 23 are fixedly connected to the limit block 5, thereby driving the limit block 5 to move downward along the limit rod 53, and then driving the limit block 5 to compress the spring 52. When the protrusion 431 on the lower end face of the fixed block 43 and the protrusion 431 on the upper end face of the fixed ring 24 are continuously separated from each other, the sieve plate 23 begins to rebound under the action of the spring 52, and this process is repeated. The sieve plate 23 is able to vibrate back and forth, thereby avoiding the accumulation of masterbatch on the sieve plate 23 and reducing the screening effect.

[0038] As an embodiment of the present invention, Figure 3 、 Figure 6 and Figure 7 As shown, the outer side surface of each fixed block 43 is fixedly connected to a scraper 41, and the lower end surface of the scraper 41 is in contact with the upper end surface of the screen plate 23, the lower side of the secondary rotating shaft 4 is fixedly connected to the fan blade 42, and the lower end of the secondary rotating shaft 4 is movably connected to the bearing at the center position of the lower end surface of the box body 21, the lower end of the box body 21 is fixedly connected to the bottom plate 8, and the lower end surface of the bottom plate 8 is evenly provided with ventilation holes 81 that penetrate to the lower end surface of the box body 21, and the four corner positions of the lower end surface of the bottom plate 8 are fixedly connected to the universal wheels 9.

[0039] During operation, based on the above embodiment, since the discharge ports 22 are both opened on the left and right sides of the box body 21, the secondary rotating shaft 4 drives the fixed block 43 to rotate while driving the scraper 41 to rotate, thereby scraping the masterbatch accumulated on the front and rear sides of the upper end face of the sieve plate 23, so that the masterbatch can be driven to the discharge port 22 position, thereby entering the corresponding receiving groove 3, thereby improving the collection degree of the masterbatch. At the same time, the secondary rotating shaft 4 can drive the fan blades 42 to rotate continuously, thereby sucking the cold air under the bottom plate 8 into the inside of the box body 21 through the ventilation hole 81, and cooperating with the cooling water in the water cylinder 16 to air-cool the masterbatch after being extruded from the water cylinder 16, thereby improving the cooling and molding effect of the masterbatch, avoiding sticking to the cutter 19 after cutting, and also avoiding the masterbatch sticking to the sieve plate 23, thereby improving the processing rate.

[0040] Working principle: Add raw materials into the barrel 12 through the feeding pipe 13, start the motor 11 to drive the auger 15 to rotate, and at the same time connect the alternating current to the electromagnetic induction coil 14. The alternating current generates an alternating magnetic field through the electromagnetic induction coil 14. The auger 15 made of magnetic conductive material is placed in it to cut the alternating magnetic lines of force, thereby generating eddy currents inside the raw materials. The eddy currents make the atoms inside the raw materials move irregularly at high speed, and the atoms collide and rub with each other to generate heat energy, thereby heating the raw materials. The raw materials are heated evenly and melted under the action of the electromagnetic induction coil 14, and are pushed into the forming tube 17 inside the water cylinder 16 under the action of the auger 15. Under the action of the cooling water inside the water cylinder 16, the masterbatch raw materials are gradually formed in the forming tube 17 without being in a completely molten state. The masterbatch is continuously extruded into the forming tube 17 under the action of pressure, so that the extruded masterbatch is in the shape of strips. The inner surface of the forming tube 17 is coated with an anti-adhesion coating to avoid the masterbatch raw material adhering to the inner surface of the forming tube 17 and causing clogging. Since the first-level rotating shaft 18 is fixedly connected to the lower end of the auger 15, the motor 11 drives the first-level rotating shaft 18 to rotate while driving the auger 15 to rotate, thereby driving the cutter 19 to rotate. The extruded strip masterbatch is cut into masterbatch under the cutting action of the cutter 19. The cooling water can accelerate the cooling and molding of the masterbatch raw material in the molten state, thereby facilitating the cutting of the cutter 19 and preventing the masterbatch from being too hot and still sticking to the cutter 19, thereby improving the cutting effect. The masterbatch falls on the cutter 19 after cutting. On the sieve plate 23, since the sieve plate 23 is a conical structure and the sieve holes of the three sieve plates 23 are reduced in sequence, the large-particle masterbatch falling on the first sieve plate 23 passes through the uppermost discharge port 22 on the left and right sides of the box body 21 and enters the corresponding receiving tank 3. The medium-particle masterbatch passes through the first sieve plate 23 and falls on the second sieve plate 23, and then enters the corresponding receiving tank 3 through the discharge port 22 in the middle position of the left and right sides of the box body 21. The small-particle masterbatch passes through the first and second sieve plates 23 and falls onto the third sieve plate 23, and enters the corresponding receiving tank 3 through the lowermost discharge port 22 on the left and right sides of the box body 21. Through layer-by-layer screening, masterbatch of different sizes can be distinguished, thereby improving the quality of the masterbatch. In the initial state, the fixed block The convex block 431 on the lower end face of 43 and the convex block 431 on the upper end face of the fixing ring 24 are staggered with each other. The primary rotating shaft 18 drives the secondary rotating shaft 4 to rotate while driving the cutter 19 to rotate, thereby the electric fixing block 43 rotates, and then drives the convex block 431 on the lower end face of the fixing block 43 and the convex block 431 on the upper end face of the fixing ring 24 to collide with each other continuously, generating an extrusion force on the sieve plate 23, thereby causing the sieve plate 23 to move downward. The left and right ends of the sieve plate 23 are fixedly connected to the limit blocks 5, thereby driving the limit blocks 5 to move downward along the limit rod 53, and then driving the limit blocks 5 to compress the spring 52. When the convex block 431 on the lower end face of the fixing block 43 and the convex block 431 on the upper end face of the fixing ring 24 are continuously separated from each other, the sieve plate 23 begins to rebound under the action of the spring 52, and this is repeated.The sieve plate 23 is able to vibrate up and down, thereby preventing the masterbatch from accumulating on the sieve plate 23 and reducing the screening effect. Since the discharge ports 22 are both opened on the left and right sides of the box body 21, the secondary rotating shaft 4 drives the fixed block 43 to rotate and drives the scraper 41 to rotate, thereby scraping the masterbatch accumulated on the front and rear sides of the upper end face of the sieve plate 23, so that the masterbatch can be driven to the discharge port 22 position and enter the corresponding receiving groove 3, thereby improving the collection rate of the masterbatch. At the same time, the secondary rotating shaft 4 can drive the fan blade 42 to rotate continuously, thereby sucking the cold air under the bottom plate 8 into the box body 21 through the ventilation hole 81. The cooling water in the water cylinder 16 is used to cool the masterbatch after being extruded from the water cylinder 16, thereby improving the cooling and forming effect of the masterbatch, preventing the masterbatch from sticking to the cutter 19 after cutting, and also preventing the masterbatch from sticking to the sieve plate 23, thereby improving the processing rate.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A plastic masterbatch production device, comprising a granulation mechanism (1), characterized in that: The granulating mechanism (1) comprises a motor (11), a barrel (12), a feed pipe (13), an electromagnetic induction coil (14), an auger (15), a water cylinder (16), a forming pipe (17), a primary rotating shaft (18) and a cutter (19), wherein the motor (11) is fixedly connected to the center position of the upper end surface of the barrel (12), and the feed pipe (13) is connected to the left side of the upper end surface of the barrel (12), the electromagnetic induction coil (14) is wound around the outer surface of the barrel (12), the auger (15) is at the center position inside the barrel (12), and the output shaft of the motor (11) passes through the barrel (12) and is fixedly connected to the upper end of the auger (15), the water cylinder (16) ) is fixedly connected to the lower end surface of the barrel (12), and the upper and lower ends of the first-level rotating shaft (18) are respectively movably connected to the sealing bearings at the center positions of the upper and lower end surfaces of the water barrel (16), the upper end of the first-level rotating shaft (18) passes through the upper end surface of the water barrel (16) and is fixedly connected to the lower end of the auger (15), and the lower end of the first-level rotating shaft (18) passes through the lower end surface of the water barrel (16) and is fixedly connected to the center position of the cutter (19), a plurality of forming tubes (17) are equidistantly arranged in an annular manner near the inner side wall of the water barrel (16), and the upper and lower ends of the forming tubes (17) respectively pass through the upper and lower end surfaces of the water barrel (16), and a screening mechanism (2) is provided below the water barrel (16); An insulating heat-insulating layer (6) is fixedly connected between the electromagnetic induction coil (14) and the outer surface of the barrel (12), an annular cavity (7) is provided inside the barrel body of the barrel (12), and a heat-insulating layer (71) is fixedly connected inside the annular cavity (7); The outer surface of the upper end of the water cylinder (16) is provided with a plurality of air holes (161) in an annular manner and at equal intervals. The outer surface of the primary rotating shaft (18) is vertically and equidistantly fixedly connected with blades (181). The cooling water level in the water cylinder (16) is lower than the height of the air holes (161), and the uppermost blade (181) is higher than the cooling water level. The screening mechanism (2) comprises a box body (21), a discharge port (22), a sieve plate (23), a fixing ring (24) and an axial hole (25); the box body (21) is a cylindrical cavity structure, and the center position of the upper end surface of the box body (21) is communicated with the lower end surface of the water cylinder (16) and is fixedly connected to the water cylinder (16); the sieve plate (23) is a conical structure, and the center position of the upper end of the sieve plate (23) is fixedly connected to the fixing ring (24), and the center position of the fixing ring (24) is provided with an axial hole (25); the sieve plates (23) are arranged at equal intervals, and the sieve holes of the three sieve plates (23) decrease in sequence. The center position of the lower end surface of the cutter (19) at the lower end of the water cylinder (16) is fixedly connected with a secondary rotating shaft (4), and the fixing ring (24) at the center position of the upper end of each sieve plate (23) is sleeved on the secondary rotating shaft (4). The box body (21) positions at the left and right ends of the outer edge of each sieve plate (23) are provided with a discharge port (22), and a limiting block (5) is provided in the discharge port (22). The left and right ends of the outer edge of each sieve plate (23) are fixedly connected to the limiting block (5), and a support plate (31) is fixedly connected below the discharge port (22), and a receiving groove (3) is placed on the support plate (31); The left and right sides of the secondary rotating shaft (4) above each of the fixing rings (24) are fixedly connected with fixing blocks (43) respectively, and the lower end surface of each fixing block (43) is fixedly connected with a protrusion (431), the lower end of the protrusion (431) is in a hemispherical structure, the upper end surface of the fixing ring (24) is fixedly connected with a plurality of protrusions (431) in a corresponding annular equidistant manner, the lower end surface of the limiting block (5) is provided with a cylindrical hole (51), and a limiting rod (53) is provided in the cylindrical hole (51), the lower end of the limiting rod (53) is fixedly connected to the lower end surface of the discharge port (22), the outer surface of the limiting rod (53) is sleeved with a spring (52), the upper end of the spring (52) is fixedly connected to the lower end surface of the limiting block (5), and the lower end of the spring (52) is fixedly connected to the lower end surface of the discharge port (22); The outer side surface of each fixed block (43) is fixedly connected to a scraper (41), and the lower end surface of the scraper (41) contacts the upper end surface of the screen plate (23); the fan blade (42) is fixedly connected to the lower side of the secondary rotating shaft (4), and the lower end of the secondary rotating shaft (4) is movably connected to the bearing at the center position of the lower end surface of the box body (21); the lower end of the box body (21) is fixedly connected to the bottom plate (8), and the lower end surface of the bottom plate (8) is evenly provided with ventilation holes (81) that penetrate to the lower end surface of the box body (21); the four corner positions of the lower end surface of the bottom plate (8) are fixedly connected to universal wheels (9); Raw materials are added to the barrel (12) through the feed pipe (13), and the motor (11) is started to drive the auger (15) to rotate. At the same time, an alternating current is connected to the electromagnetic induction coil (14). The alternating current generates an alternating magnetic field through the electromagnetic induction coil (14). The auger (15) made of a magnetic conductive material is placed therein to cut the alternating magnetic field lines, thereby generating eddy currents inside the raw materials. The eddy currents cause the atoms inside the raw materials to move at high speed and irregularly. The atoms collide and rub against each other to generate heat energy, thereby achieving the effect of heating the raw materials. The raw materials are heated evenly and melted under the action of the electromagnetic induction coil (14). Under the action of the auger (15), the raw materials are pushed into the forming tube (17) inside the water barrel (16). Under the action of the cooling water inside the water barrel (16), the masterbatch raw materials are The masterbatch is gradually formed in the forming tube (17) without being in a completely molten state, and is continuously extruded from the forming tube (17) under the action of pressure, so that the extruded masterbatch is in a strip shape. The inner surface of the forming tube (17) is coated with an anti-adhesion coating to avoid the masterbatch raw material from adhering to the inner surface of the forming tube (17) and causing a clogging phenomenon. Since the first-level rotating shaft (18) is fixedly connected to the lower end of the auger (15), the motor (11) drives the first-level rotating shaft (18) to rotate while driving the auger (15), thereby driving the cutter (19) to rotate. The extruded strip masterbatch is cut into masterbatch under the cutting action of the cutter (19). The cooling water can accelerate the cooling and shaping of the masterbatch raw material in the molten state, thereby facilitating the cutter (19) to cut it. At the same time, it prevents the masterbatch from being too sticky due to high temperature and sticking to the cutter (19), thereby improving the cutting effect. The masterbatch after cutting falls on the sieve plate (23). Since the sieve plate (23) is a conical structure and the sieve holes of the three sieve plates (23) are reduced in sequence, the large-particle masterbatch falling on the first sieve plate (23) passes through the discharge port (22) at the top of the left and right sides of the box (21) and enters the corresponding receiving groove (3). The medium-particle masterbatch passes through the first sieve plate (23) and falls on the second sieve plate (23), and then passes through the discharge port (22) at the middle position of the left and right sides of the box (21) and enters the corresponding receiving groove (3). The small-particle masterbatch passes through the first and second sieve plates (23) and falls to the third sieve plate (23). On the sieve plate (23), the material enters the corresponding receiving groove (3) through the discharge port (22) at the bottom of the left and right sides of the box (21). Through layer-by-layer screening, masterbatches of different sizes can be distinguished, thereby improving the quality of the masterbatches. In the initial state, the protrusion (431) on the lower end face of the fixed block (43) and the protrusion (431) on the upper end face of the fixed ring (24) are staggered with each other. The primary rotating shaft (18) drives the cutter (19) to rotate while driving the secondary rotating shaft (4) to rotate, thereby the electric fixed block (43) rotates, and then drives the protrusion (431) on the lower end face of the fixed block (43) and the protrusion (431) on the upper end face of the fixed ring (24) to continuously collide with each other, generating an extrusion force on the sieve plate (23), thereby causing the sieve plate (23) to move downward.The left and right ends of the sieve plate (23) are fixedly connected to the limit block (5), thereby driving the limit block (5) to move downward along the limit rod (53), and then driving the limit block (5) to compress the spring (52). When the protrusion (431) on the lower end face of the fixed block (43) and the protrusion (431) on the upper end face of the fixed ring (24) are continuously separated from each other, the sieve plate (23) begins to rebound under the action of the spring (52). This is repeated, and the sieve plate (23) is able to vibrate up and down, thereby preventing the masterbatch from accumulating on the sieve plate (23) and reducing the screening effect. Since the discharge ports (22) are both opened on the left and right sides of the box body (21), the fixed block (43) is driven to rotate by the secondary rotating shaft (4) while the sieve plate (23) is driven to rotate. The movable scraper (41) rotates to scrape the masterbatch accumulated on the front and rear sides of the upper end of the sieve plate (23), so that the masterbatch can be driven to the discharge port (22) and enter the corresponding receiving groove (3), thereby improving the collection degree of the masterbatch. At the same time, the secondary rotating shaft (4) can drive the fan blade (42) to rotate continuously, thereby sucking the cold air below the bottom plate (8) into the box body (21) through the ventilation hole (81), and cooperating with the cooling water in the water cylinder (16) to cool the masterbatch after being extruded from the water cylinder (16), thereby improving the cooling and molding effect of the masterbatch, avoiding adhesion to the cutter (19) after cutting, and also avoiding adhesion to the sieve plate (23), thereby improving the processing rate.

Images