Efficient production line of color master batch for plastic cement

Abstract

The invention provides an efficient color master batch production line for plastics, and particularly relates to the technical field of color master batch production, the efficient color master batch production line further comprises a grinding device, mixing equipment, an extrusion structure and a cooling and pelletizing structure which are connected in sequence, the cooling and pelletizing structure is connected with a drying structure through a transfer system, and the drying structure is fixedly arranged on the extrusion structure; the grinding device comprises a support, a crushing and grinding structure, a stirring and feeding structure connected with the crushing and grinding structure and a discharging assembly arranged at the bottom end of the crushing and grinding structure, and the discharging assembly is connected with the mixing equipment. According to the high-efficiency production line for the color master batch for the plastic cement, when the color master batch is produced, the raw material grinding efficiency, the mixing efficiency and the cooling efficiency can be improved, and the color master batch can be fully dried, so that the whole process of the production line is more efficient.

Description

Technical Field

[0001] The invention belongs to the technical field of masterbatch production, and in particular relates to a high-efficiency production line of masterbatch for plastics. Background Art

[0002] Masterbatch is an aggregate obtained by uniformly loading an extraordinary amount of pigment into a resin. The masterbatch technology generally used is a wet process. Masterbatch is generally composed of three parts: colorant, carrier, and dispersant. After grinding and mixing in a high-speed mixer, it is extruded and granulated by a single screw or twin screw, and further water-cooled, air-dried, dehydrated, granulated, and dried. Among them, the formula component materials enter the twin screw by metering feeding, and the materials form a molten mixing field under the shear force of the screw, so that the pigment is dispersed in the carrier resin.

[0003] However, in the prior art, there are several technical problems in the whole production process of masterbatch:

[0004] (1) In the existing grinding device, when grinding, the raw materials are usually uniformly placed in the grinding chamber, and then uniformly ground, and then mixed after grinding. The production process is discontinuous, which easily leads to a decrease in production efficiency;

[0005] (2) For the masterbatch industry, achieving high dispersibility during high-speed mixing is a difficult problem in the industry. In the production process, for formulas with high pigment content, it is even more difficult to solve the problem of pigment dispersion. Pigment agglomeration causes color spots and color flowers, which affects the physical properties of the product.

[0006] (3) The masterbatch is water-cooled and air-dried before pelletizing, and needs to be dried after pelletizing. Not only is the operation cumbersome and complicated, but the masterbatch sizes are different, resulting in the stacking of masterbatch of different sizes too close, that is, the gap between adjacent masterbatch is too small, resulting in uneven and insufficient drying;

[0007] In addition, when the distance between the masterbatch and the drying equipment is small, the masterbatch may be exposed to too much heat and burn out, which will reduce the quality of the masterbatch and affect sales.

[0008] Therefore, this solution proposes an efficient production line for masterbatch of plastics and rubbers, which is used to solve the above-mentioned technical problems at the same time. Summary of the invention

[0009] The purpose of the present invention is to provide an efficient production line for masterbatches for plastics, which solves the technical problems of how to improve the raw material grinding efficiency, mixing efficiency, cooling efficiency and fully dry the masterbatches when producing masterbatches, so as to make the whole process of the production line more efficient.

[0010] A high-efficiency production line for masterbatch for plastics, further comprising a grinding device, a mixing device, an extrusion structure, and a cooling and pelletizing structure connected in sequence, wherein the cooling and pelletizing structure is connected to a drying structure through a transfer system, and the drying structure is fixedly arranged on the extrusion structure;

[0011] The grinding device comprises a bracket, a crushing and grinding structure, a stirring and feeding structure connected to the crushing and grinding structure, and a discharging component arranged at the bottom end of the crushing and grinding structure, and the discharging component is connected to the mixing equipment.

[0012] The crushing and grinding structure comprises a hemispherical shell with an opening facing upward, a containing box coaxially fixed to the top of the hemispherical shell, a grinding block vertically passing through the containing box and contacting the inner side of the hemispherical shell, a vertical cylinder with a bottom end coaxially connected to the upper end of the grinding block, a fixing plate coaxially fixed to the top of the vertical cylinder, and a driving cylinder coaxially fixedly connected to the fixing plate, the grinding block is hemispherical and has a through hole at the center, and the outer side of the vertical cylinder is connected to one end of the feeding cylinder;

[0013] The outer side of the vertical cylinder is in circumferential sliding contact with the inner side of the containing box, the driving cylinder is rotatably connected to the bracket and connected to the second driving motor, and the containing box is connected to the first lifting cylinder.

[0014] The stirring and feeding structure includes a vertically arranged upper driving column, a square column slidably connected to the bottom end of the upper driving column, a telescopic column connected to the bottom end of the square column, a spring sleeved on the outside of the telescopic column, a lower driving column connected to the bottom end of the telescopic column, an upper stirring rod connected to the upper end of the lower driving column, a spiral blade sleeved on the lower end of the lower driving column, a lower stirring rod fixed to the bottom end of the lower driving column, and a spherical protrusion fixed to the center of the lower stirring rod. The top end of the upper driving column is connected to a driving motor, the upper driving column is rotatably connected to a bracket, and the top end of the spring is fixedly connected to the upper driving column.

[0015] The discharging assembly includes a bottom cylinder whose top end is coaxially connected to the bottom end of the hemispherical shell, two lifting cylinders connected to the bottom cylinder for upward and downward sliding, and a discharging pipe whose one end is connected to the outer side of the bottom cylinder, and the other end of the discharging pipe is arranged obliquely downward.

[0016] The mixing device comprises a mixing barrel arranged horizontally, a spiral feeding structure arranged inside the mixing barrel, a plurality of feeding components arranged outside the mixing barrel, a heater arranged near one end of the mixing barrel, a circulating stirring component connected to the outside of the mixing barrel, and an extrusion structure fixedly connected to one end of the mixing barrel, wherein the circulating stirring component is arranged near the heater;

[0017] The circulating stirring component is connected to one of the feeding components close to the end of the mixing barrel.

[0018] The feeding assembly comprises a feeding pipe whose bottom end is connected to the upper end of the outer side of the mixing barrel, and a conical cover coaxially connected to the top end of the feeding pipe.

[0019] The circulating stirring assembly includes a circulating pipe 2 whose one end is connected to the outside of the mixing barrel, a stirring structure connected to the other end of the circulating pipe 2, and a circulating pipe 1 whose one end is connected to the stirring structure through a suction pump, and the other end of the circulating pipe 1 is connected to one of the conical covers.

[0020] One end of the mixing barrel is fixedly connected with an extrusion structure;

[0021] The extrusion structure includes an extrusion barrel, a lower screw feeder arranged inside the extrusion barrel, a molding barrel fixed at the outer end of the extrusion barrel, and a cooling pelletizing structure connected to the molding barrel. One end of the mixing barrel is connected to the outer side of the extrusion barrel, and the molding barrel is provided with a plurality of discharge holes.

[0022] The drying structure comprises a drying cylinder and an upper screw feeder arranged inside the drying cylinder, and the outer side of the drying cylinder is attached to the outer side of the extrusion cylinder.

[0023] The cooling pelletizing structure comprises a water cylinder sleeved on the outside of the forming cylinder, a water inlet pipe connected to the outside of the water cylinder at one end, a water outlet pipe connected to the outside of the water cylinder at one end, a circulating water pump connected to the water inlet pipe or the water outlet pipe, and a fan fixed at the outer end of the forming cylinder, wherein the fan sprays airflow toward the discharge hole;

[0024] It also includes a pelletizing cylinder coaxially arranged near the outer end of the forming cylinder, fixing plates respectively fixed on both sides of the pelletizing cylinder, a cutter arranged at the outer end of the pelletizing cylinder, a linear slide connected to the cutter, and a linear reciprocating motion mechanism connected to the linear slide;

[0025] The pelletizing cylinder is provided with a docking hole, the docking hole corresponds to the discharge hole coaxially, the pelletizing cylinder is fixedly connected to the forming cylinder through the fixing sheet, and a gap is provided between the pelletizing cylinder and the forming cylinder.

[0026] Generally speaking, during mixing, various different materials are gradually added to the mixing equipment.

[0027] The containing box comprises a horizontally arranged annular plate 1, a vertically arranged annular plate 2, and a closing plate arranged parallel to the annular plate 1, the annular plate 2 is coaxially fixed to the outer edge of the annular plate 1, the annular plate 1 and the closing plate are respectively arranged on the upper and lower sides of the annular plate 2, and the upper end surface of the annular plate 1 is an inclined surface.

[0028] The beneficial effects of the present invention are as follows:

[0029] (1) The crushing and grinding structure is designed to achieve the following technical effects:

[0030] First, through the interaction between the grinding block and the hemispherical shell, the grinding block rotates at high speed, and the contact area of ​​the spherical surface is large and uniform, which helps to achieve efficient and uniform crushing and grinding of the raw materials;

[0031] Second, an annular containing box is arranged at the top of the hemispherical shell. When there are a lot of materials in the hemispherical shell, they can be temporarily stored in the containing box. The inner bottom surface of the containing box is an inclined surface, which is convenient for removing the materials.

[0032] Third, the upper end of the grinding block is connected to the vertical cylinder, which not only seals the inner side of the hemispherical shell, but also allows the material to be continuously transported into the vertical cylinder through the feed cylinder, so that the entire grinding and feeding process can be carried out continuously without interruption, greatly improving the grinding efficiency;

[0033] (2) This solution is equipped with a stirring and feeding structure, which achieves the following technical effects:

[0034] First, an upper driving column, a telescopic column, a square column and a spring are provided, so that the telescopic column and the square column can slide up and down, and the height can be adjusted according to the actual position of the hemispherical shell;

[0035] Secondly, a lower driving column and an upper stirring rod are provided. Under the rotation of the lower driving column, the upper stirring rod is driven to rotate continuously, which helps to pre-mix and crush the materials in the vertical cylinder;

[0036] Third, the lower driving column drives the spiral blade to rotate, and the material in the vertical cylinder is continuously sent into the hemispherical shell, ensuring the replenishment of the material in the hemispherical shell, which helps the continuous grinding and mixing process;

[0037] Fourth, a lower stirring rod is provided to help the material spread evenly on the inner side of the hemispherical shell to ensure uniform stirring;

[0038] (3) A discharging assembly is provided to cooperate with the mixing equipment to achieve the following technical effects:

[0039] First, a lifting cylinder 2 and a bottom barrel are provided, and the free end of the lifting cylinder 2 extends into the bottom barrel to support the grinding and prevent the material from entering the bottom barrel without being ground; at the same time, the free end descends, and the ground material directly falls into the discharge pipe and then enters the mixing barrel;

[0040] Second, multiple feeding pipes and conical covers are arranged in sequence along the length direction of the mixing drum, so that different materials can be added in sequence during mixing, and mixed step by step, which helps to increase high dispersibility;

[0041] The third is to set up a circulating stirring component. The heated materials in the mixing barrel enter the stirring structure for stirring, mixing evenly, and then circulate into the mixing barrel again, further improving the high dispersibility of the mixing;

[0042] (4) The cooling pelletizing structure is designed to achieve the following technical effects:

[0043] First, the forming cylinder has a certain length, which assists the cooling effect of the water cylinder, so that the material can be quickly condensed and formed in the process of passing through the forming cylinder, avoiding the disadvantages and troubles of the masterbatch material needing to pass through the water source in the past;

[0044] Secondly, a fan is provided to set a gap between the forming cylinder and the pelletizing cylinder. The fan blows towards the material passing through the gap to further cool and dry it. The pelletizing cylinder has a guiding function, which facilitates the subsequent cutting process and is quick and convenient.

[0045] (5) The extrusion structure and the drying structure work together to achieve the following technical effects:

[0046] First, the heat of the material inside the extruder is used to bake the drying cylinder, which helps to dry the material in the drying cylinder;

[0047] The second is to use the upper screw feeder in the drying cylinder to gradually push the material, so that the material moves evenly and slowly in the upper screw feeder, achieving full contact and heat dissipation between the masterbatch and the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the structure of the high-efficiency production line of masterbatch in the present invention.

[0049] Figure 2 It is a schematic diagram of the structure of the grinding device in the present invention.

[0050] Figure 3 Schematic diagram of the connection structure between the receiving box and the discharging assembly in the present invention Figure 1 .

[0051] Figure 3-1 Schematic diagram of the connection structure between the receiving box and the discharging assembly in the present invention Figure 2 .

[0052] Figure 4 It is a schematic diagram of the structure of the grinding structure in the present invention.

[0053] Figure 5 It is a schematic diagram of the connection structure between the vertical cylinder and the grinding block in the present invention.

[0054] Figure 6 It is a structural schematic diagram of the stirring and feeding structure in the present invention.

[0055] Figure 7 It is a schematic diagram of the lower end structure of the stirring and feeding structure in the present invention.

[0056] Figure 8 It is a schematic diagram of the connection structure of the square column, spring and telescopic column in the present invention.

[0057] Fig. 9 It is a schematic diagram of the structure of the mixing equipment in the present invention.

[0058] Fig.10 It is a schematic diagram of the connection structure of the drying structure and the extrusion structure in the present invention.

[0059] Fig.11 Schematic diagram of the connection structure of the cooling pelletizing structure in the present invention Figure 1 .

[0060] Fig.12 Schematic diagram of the connection structure of the cooling pelletizing structure in the present invention Figure 2 .

[0061] Among them, the figures are marked as follows: 1, bracket; 2, lifting cylinder 1; 3, lifting cylinder 2; 4, accommodating box; 41, closing plate; 411, inclined surface; 42, hemispherical shell; 43, bottom cylinder; 5, grinding structure; 51, driving cylinder; 52, fixing plate; 53, vertical cylinder; 54, grinding block; 541, through hole; 55, feeding cylinder; 6, driving motor 1; 61, upper driving column; 62, telescopic column; 621, square column; 63, spring; 64, lower driving column; 65, upper stirring rod; 66, spiral blade; 67, lower stirring rod; 68, lower stirring rod; 69, lower stirring rod; 70, upper stirring rod; 71, upper stirring rod; 72, lower stirring rod; 73, lower stirring rod; 74, lower stirring rod; 75, upper stirring rod; 76, lower stirring rod; 77, lower stirring rod; 78, lower stirring rod; 79, lower stirring rod; 80, upper stirring rod; 81, upper driving column; 82, upper driving column; 83, upper driving column; 84, lower driving column; 85, upper stirring rod; 86, spiral blade; 87, lower stirring rod; 88, lower stirring rod; 89, lower stirring rod; 90, upper stirring rod; 91, upper driving column; 92, upper driving column; 93, upper driving column; 94, lower driving column; 95, upper stirring rod; 96, spiral blade; 97, lower stirring rod; 98, lower stirring rod; 99, upper stirring rod; 100, upper driving column; 101, upper driving column; 102, upper driving column; 103, upper driving column; 104, lower driving column; 105, upper stirring rod; 106, upper stirring rod; 10 8. Spherical protrusion; 7. Driving motor 2; 8. Discharge pipe; 9. Conical cover; 10. Feeding pipe; 11. Mixing barrel; 12. Heater; 13. Circulation pipe 1; 14. Drying structure; 141. Drying barrel; 15. Extrusion structure; 16. Pelletizing structure; 160. Water inlet pipe; 161. Forming barrel; 162. Discharge hole; 163. Water barrel; 164. Water outlet pipe; 165. Fixing plate; 166. Pelletizing barrel; 167. Cutter; 168. Linear slide rod; 169. Fan; 17. Stirring structure; 171. Circulation pipe 2. DETAILED DESCRIPTION

[0062] In order to more clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0063] See also Figure 1-Figure 12 , a high-efficiency production line for masterbatch for plastics, further comprising a grinding device, a mixing device, an extrusion structure 15, and a cooling and pelletizing structure 16 connected in sequence, wherein the cooling and pelletizing structure 16 is connected to a drying structure 14 through a transfer system, and the drying structure 14 is fixedly arranged on the extrusion structure 15;

[0064] The grinding device comprises a bracket 1, a crushing and grinding structure 5, a stirring and feeding structure connected to the crushing and grinding structure 5, and a discharging component arranged at the bottom end of the crushing and grinding structure 5, and the discharging component is connected to the mixing equipment.

[0065] Among them, the crushing and grinding structure 5 and the stirring and feeding structure are both connected to the bracket.

[0066] After the pelletizing is completed, the masterbatch particles are obtained. The next procedure is to dry the masterbatch. At this time, a transfer system, such as a conveyor belt mechanism, is used to transfer the masterbatch to a drying cylinder 141 on the drying structure for drying. The conveyor belt mechanism is an existing conventional technology and will not be described in detail here, nor will it be marked in the drawings.

[0067] The crushing and grinding structure 5 includes a hemispherical shell 42 with an opening facing upward, a containing box 4 coaxially fixed to the top of the hemispherical shell 42, a grinding block 54 vertically passing through the containing box 4 and contacting the inner side of the hemispherical shell 42, a vertical cylinder 53 whose bottom end is coaxially connected to the upper end of the grinding block 54, a fixing plate 52 coaxially fixed to the top of the vertical cylinder 53, and a driving cylinder 51 coaxially fixedly connected to the fixing plate 52. The grinding block 54 is hemispherical and has a through hole 54 at the center. The outer side of the vertical cylinder 53 is connected to one end of a feed cylinder 55.

[0068] The outer side of the vertical cylinder 53 is in circumferential sliding contact with the inner side of the receiving box 4 , the driving cylinder 51 is rotatably connected to the bracket 1 and connected to the driving motor 2 7 , and the receiving box 4 is connected to the lifting cylinder 1 2 .

[0069] It should be noted that the curvature of the interior of the hemispherical shell 42 is consistent with the curvature of the exterior of the grinding block 54; the lifting cylinder 2 can adjust the height of the accommodating box 4 and the hemispherical shell 42.

[0070] The stirring and feeding structure includes a vertically arranged upper driving column 61, a square column 621 slidingly connected to the bottom end of the upper driving column 61, a telescopic column 62 connected to the bottom end of the square column 621, a spring 63 sleeved on the outside of the telescopic column 62, a lower driving column 64 connected to the bottom end of the telescopic column 62, an upper stirring rod 65 connected to the upper end of the lower driving column 64, a spiral blade 66 sleeved on the lower end of the lower driving column 64, a lower stirring rod 67 fixed to the bottom end of the lower driving column 64, and a spherical protrusion 68 fixed to the center of the lower stirring rod 67. The top end of the upper driving column 61 is connected to the driving motor 6, the upper driving column 61 is rotatably connected to the bracket 1, and the top end of the spring 63 is fixedly connected to the upper driving column 61.

[0071] The discharge assembly includes a bottom cylinder 43 whose top end is coaxially connected to the bottom end of the hemispherical shell 42, a lifting cylinder 23 connected to the bottom cylinder 43 for upward and downward sliding, and a discharge pipe 8 whose one end is connected to the outside of the bottom cylinder 43, and the other end of the discharge pipe 8 is arranged obliquely downward.

[0072] The mixing device includes a mixing barrel 11 arranged horizontally, a spiral feeding structure arranged inside the mixing barrel 11, a plurality of feeding components arranged outside the mixing barrel 11, a heater 12 arranged near one end of the mixing barrel 11, a circulating stirring component connected to the outside of the mixing barrel 11, and an extrusion structure 15 fixedly connected to one end of the mixing barrel 11, wherein the circulating stirring component is arranged near the heater 12;

[0073] The circulating stirring assembly is connected to one of the feeding assemblies near the end of the mixing barrel 11.

[0074] Other components in the mixing equipment, such as valves, which have not been described in detail, belong to the prior art and will not be described in detail here.

[0075] The feeding assembly comprises a feeding pipe 10 whose bottom end is connected to the upper end of the outer side of a mixing barrel 11 , and a conical cover 9 which is coaxially connected to the top end of the feeding pipe 10 .

[0076] The circulation stirring assembly includes a circulation pipe 171 having one end connected to the outside of the mixing barrel 11, a stirring structure 17 connected to the other end of the circulation pipe 171, a circulation pipe 13 having one end connected to the stirring structure 17 through a suction pump, and the other end of the circulation pipe 13 is connected to one of the conical covers 9.

[0077] One end of the mixing barrel 11 is fixedly connected with an extrusion structure 15;

[0078] The extrusion structure 15 includes an extrusion barrel, a lower screw feeder arranged inside the extrusion barrel, a molding barrel 161 fixed to the outer end of the extrusion barrel, and a cooling pelletizing structure 16 connected to the molding barrel 161. One end of the mixing barrel 11 is connected to the outer side of the extrusion barrel, and a plurality of discharge holes 162 are arranged on the molding barrel 161.

[0079] The drying structure 14 includes a drying cylinder and an upper screw feeder arranged inside the drying cylinder, and the outer side of the drying cylinder is attached to the outer side of the extrusion cylinder.

[0080] The cooling pelletizing structure 16 includes a water cylinder 163 sleeved on the outside of the forming cylinder 161, a water inlet pipe 160 connected to the outside of the water cylinder 163 at one end, a water outlet pipe 164 connected to the outside of the water cylinder 163 at one end, a circulating water pump connected to the water inlet pipe 160 or the water outlet pipe 164, and a fan 169 fixed on the outer end of the forming cylinder 161, and the fan 169 sprays airflow toward the position of the discharge hole 162;

[0081] It also includes a pelletizing cylinder 166 coaxially arranged near the outer end of the forming cylinder 161, fixing plates 165 respectively fixed on both sides of the pelletizing cylinder 166, a cutter 167 arranged at the outer end of the pelletizing cylinder 166, a linear slide 168 connected to the cutter 167, and a linear reciprocating motion mechanism connected to the linear slide 168;

[0082] The pelletizing cylinder 166 is provided with a docking hole, which is coaxially corresponding to the discharge hole 162 . The pelletizing cylinder 166 is fixedly connected to the forming cylinder 161 via a fixing sheet 165 , and a gap is provided between the pelletizing cylinder 166 and the forming cylinder 161 .

[0083] Generally speaking, during mixing, various materials (such as rubber, accelerator, active agent, reinforcing filler, etc.) are gradually added into the mixing equipment. The names of the materials are known in the prior art and will not be described in detail here.

[0084] The power structures in this solution are all connected to the PLC controller for unified control.

[0085] The containing box 4 includes a horizontally arranged annular plate 1, a vertically arranged annular plate 2, and a closing plate 41 arranged parallel to the annular plate 1, the annular plate 2 is coaxially fixed to the outer edge of the annular plate 1, the annular plate 1 and the closing plate 41 are respectively arranged on the upper and lower sides of the annular plate 2, and the upper end surface of the annular plate 1 is an inclined surface 411. The upper end surface of the annular plate 1 is an inclined surface 411, which helps the material to fall naturally when discharging.

[0086] The specific working process of the present invention is as follows:

[0087] During specific operation, the material to be ground (for example, the material may be polyethylene wax, color powder, filler, etc.) is poured into the vertical cylinder 53 through the feed cylinder 55. The vertical cylinder 53 has a receiving cavity, and the material is temporarily buffered in the receiving cavity. The drive motor 6 is started to drive the stirring and feeding structure to work. A lower driving column 64 and an upper stirring rod 65 are provided. Under the rotation of the lower driving column 64, the upper stirring rod 65 is driven to rotate continuously, which helps to pre-stir and crush the material in the vertical cylinder 53. The lower driving column 64 drives the spiral blade 66 to rotate, and the material in the vertical cylinder 53 is continuously fed into the hemispherical shell 42, ensuring the replenishment of the material in the hemispherical shell 42, which helps to continue the grinding and stirring process.

[0088] It should be noted that the drive motor 6 can also rotate forward and reverse, so that the spiral blade 66 rotates forward and reverse. When there is a lot of material in the hemispherical shell 42, the material in the vertical cylinder 53 is temporarily not input into the hemispherical shell 42. At this time, the drive motor 6 is reversed to avoid the spiral blade 66 from continuing to feed the material; when the upper stirring rod 65 is required for stirring, the reversal function can also be started at this time to avoid the spiral blade 66 from feeding the material; in short, the operation of the drive motor 6 can be adjusted according to the actual production operation situation to ensure that feeding and grinding are carried out continuously.

[0089] At this time, under the regulation of the lifting cylinder 2, there is a gap between the inner side of the hemispherical shell 42 and the grinding block 54, and the material enters the gap. A lower stirring rod 67 is provided to help the material spread evenly on the inner side of the hemispherical shell 42 to ensure the uniformity of stirring; and an upper driving column 61, a telescopic column 62, a square column 621 and a spring 63 are provided, so that the telescopic column 62 and the square column 621 can slide up and down, which is convenient for the height adaptability adjustment according to the actual position of the hemispherical shell 42;

[0090] Through the interaction between the grinding block 54 and the hemispherical shell 42, the grinding block 54 rotates at a high speed, and the contact area of ​​the spherical surface is large and uniform, which is conducive to achieving efficient and uniform crushing and grinding of the raw materials; the top of the hemispherical shell 42 is provided with an annular containing box 4, when there is a lot of material in the hemispherical shell 42, it can be temporarily stored in the containing box 4, and the inner bottom surface of the containing box 4 is an inclined surface 411, which is convenient for removing the material; the upper end of the grinding block 54 is connected to the vertical cylinder 53, which not only plays the role of sealing the inner side of the hemispherical shell 42, but also can continuously transport materials into the vertical cylinder 53 through the feeding cylinder 55, so that the entire grinding and feeding process can be carried out continuously without interruption, which greatly improves the grinding efficiency;

[0091] A discharge assembly is provided to cooperate with the mixing equipment, and a lifting cylinder 23 and a bottom barrel 43 are provided. The free end of the lifting cylinder 23 extends into the bottom barrel 43 to support the grinding, so as to prevent the material from entering the bottom barrel 43 and not being ground. At the same time, the free end descends, and the ground material directly falls into the discharge pipe 8, and then enters the mixing barrel 11;

[0092] In the length direction of the mixing barrel 11, a plurality of feed pipes 10 and conical covers 9 are sequentially arranged, and when mixing, a plurality of different materials are sequentially added and mixed step by step, which helps to increase high dispersibility;

[0093] A circulating stirring assembly is provided, and the heated materials in the mixing barrel 11 enter the stirring structure 17 for stirring, and are mixed evenly, and then circulate into the mixing barrel 11 again, which further improves the high dispersibility of the mixing;

[0094] Specifically, the material first enters the circulation pipe 2 171, and then enters the stirring structure 17. The stirring structure 17 is a prior art, so as to improve the dispersion. The material in the stirring structure 17 is sucked out by a suction pump and enters the circulation pipe 1 13, and then enters the conical cover 9 and the feeding pipe 10, and enters the extrusion structure 15.

[0095] The extrusion structure 15 includes an extrusion barrel, a lower screw feeder arranged inside the extrusion barrel, and a forming barrel 161 fixed to the outer end of the extrusion barrel. Under the extrusion action of the lower screw feeder, the material enters the forming barrel 161. The forming barrel 161 is provided with a plurality of discharge holes 162, and the material comes out of the discharge holes 162 in the form of a long rope.

[0096] The forming cylinder 161 is connected to a cooling pelletizing structure 16, which includes a water cylinder 163 sleeved on the outside of the forming cylinder 161, a water inlet pipe 160 connected to the outside of the water cylinder 163 at one end, a water outlet pipe 164 connected to the outside of the water cylinder 163 at one end, a circulating water pump connected to the water inlet pipe 160 or the water outlet pipe 164, and a fan 169 fixed at the outer end of the forming cylinder 161, and the fan 169 sprays airflow toward the position of the discharge hole 162;

[0097] Cold water is introduced into the water cylinder 163 through the water inlet pipe 160 and then flows out from the water outlet pipe 164. The circulating water pump is connected to the external water tank to cool the forming cylinder 161, so that the material in the discharge hole 162 is quickly condensed into a solid state, which is convenient for the subsequent cutting process;

[0098] A pelletizing cylinder 166, fixing plates 165 respectively fixed on both sides of the pelletizing cylinder 166, a cutter 167 arranged at the outer end of the pelletizing cylinder 166, a linear slide 168 connected to the cutter 167, and a linear reciprocating motion mechanism connected to the linear slide 168 are coaxially arranged near the outer end of the forming cylinder 161;

[0099] A docking hole is provided on the pelletizing cylinder 166, and the docking hole corresponds to the discharge hole 162 coaxially (the docking hole can be slightly larger than the discharge hole 162), so that the material discharged from the discharge hole 162 then directly enters the docking hole, and the fan blows air toward the gap between the pelletizing cylinder 166 and the forming cylinder 161, further cooling and drying, and finally coming out from the outer end of the docking hole and contacting the cutter 167. The cutter 167 is driven by the linear reciprocating motion mechanism through the linear slide rod 168 to achieve reciprocating up and down motion to cut the material, and finally obtain granular masterbatch; it should be noted that the linear reciprocating motion mechanism can be any conventional mechanical mechanism, as long as it drives the cutter 167 to achieve up and down motion.

[0100] A transfer system is arranged at the outer end of the pelletizing cylinder 166, i.e., near the position of the cutter, such as a conveyor belt mechanism, to transfer the cut granular masterbatch to the drying cylinder 141. To simplify the design, the conveyor belt mechanism is indicated in the accompanying drawings. It is hereby explained that the outer side of the drying cylinder 141 is attached to the outer side of the extrusion cylinder, and the extrusion structure 15 and the drying structure 14 work together. The heat of the material inside the extrusion cylinder is used to bake the drying cylinder 141, which helps to dry the material in the drying cylinder 141. The extrusion process is a conventional operation of the prior art and will not be described in detail here. The upper screw feeder is used in the drying cylinder 141 to gradually push the material so that the material moves evenly and slowly in the upper screw feeder, thereby achieving full contact and heat dissipation between the masterbatch and the material. This idea of ​​combining the extrusion and drying processes helps to save energy.

[0101] Technical features not described in the present invention can be achieved through or by adopting existing technologies and will not be described in detail here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. An efficient production line for masterbatch of plastics, characterized in that: It also includes a grinding device, a mixing device, an extrusion structure (15), and a cooling and pelletizing structure (16) which are connected in sequence, wherein the cooling and pelletizing structure (16) is connected to the drying structure (14) via a transfer system, and the drying structure (14) is fixedly arranged on the extrusion structure (15); The grinding device comprises a bracket (1), a crushing and grinding structure (5), a stirring and feeding structure connected to the crushing and grinding structure (5), and a discharge assembly arranged at the bottom end of the crushing and grinding structure (5), wherein the discharge assembly is connected to the mixing equipment.

2. The high-efficiency production line of masterbatch for plastics according to claim 1 is characterized in that: The crushing and grinding structure (5) comprises a hemispherical shell (42) with an opening facing upward, a containing box (4) coaxially fixed to the top of the hemispherical shell (42), a grinding block (54) vertically passing through the containing box (4) and contacting the inner side of the hemispherical shell (42), a vertical cylinder (53) whose bottom end is coaxially connected to the upper end of the grinding block (54), a fixing plate (52) coaxially fixed to the top of the vertical cylinder (53), and a driving cylinder (51) coaxially fixedly connected to the fixing plate (52), wherein the grinding block (54) is hemispherical and has a through hole (541) at its center, and the outer side of the vertical cylinder (53) is connected to one end of a feed cylinder (55); The outer side of the vertical cylinder (53) is in circumferential sliding contact with the inner side of the containing box (4); the driving cylinder (51) is rotatably connected to the bracket (1) and is connected to the second driving motor (7); and the containing box (4) is connected to the first lifting cylinder (2).

3. The high-efficiency production line of masterbatch for plastics according to claim 1 is characterized in that: The stirring and feeding structure comprises an upper driving column (61) arranged vertically, a square column (621) slidably connected to the bottom end of the upper driving column (61), a telescopic column (62) connected to the bottom end of the square column (621), a spring (63) sleeved on the outside of the telescopic column (62), a lower driving column (64) connected to the bottom end of the telescopic column (62), an upper stirring rod (65) connected to the upper end of the lower driving column (64), a spiral blade (66) sleeved on the lower end of the lower driving column (64), a lower stirring rod (67) fixed to the bottom end of the lower driving column (64), and a spherical protrusion (68) fixed to the center of the lower stirring rod (67), the top end of the upper driving column (61) is connected to a driving motor 1 (6), the upper driving column (61) is rotatably connected to a bracket (1), and the top end of the spring (63) is fixedly connected to the upper driving column (61).

4. The high-efficiency production line of masterbatch for plastics according to claim 2 is characterized in that: The discharge assembly comprises a bottom cylinder (43) whose top end is coaxially connected to the bottom end of the hemispherical shell (42), two lifting cylinders (3) connected to the bottom cylinder (43) for upward and downward sliding, and a discharge pipe (8) whose one end is connected to the outside of the bottom cylinder (43), and the other end of the discharge pipe (8) is arranged obliquely downward.

5. The high-efficiency production line of masterbatch for plastics according to claim 1 is characterized in that: The mixing device comprises a mixing barrel (11) arranged horizontally, a spiral feeding structure arranged inside the mixing barrel (11), a plurality of feeding components arranged outside the mixing barrel (11), a heater (12) arranged near one end of the mixing barrel (11), and a circulating stirring component connected to the outside of the mixing barrel (11), wherein the circulating stirring component is arranged near the heater (12); The circulating stirring component is connected to one of the feeding components close to the end of the mixing barrel (11).

6. The high-efficiency production line of masterbatch for plastics according to claim 5, characterized in that: The feeding assembly comprises a feeding pipe (10) whose bottom end is connected to the upper end of the outer side of the mixing barrel (11), and a conical cover (9) coaxially connected to the top end of the feeding pipe (10).

7. The high-efficiency production line of masterbatch for plastics according to claim 6, characterized in that: The circulation stirring assembly comprises a circulation pipe 2 (171) whose one end is connected to the outside of the mixing barrel (11), a stirring structure (17) connected to the other end of the circulation pipe 2 (171), and a circulation pipe 1 (13) whose one end is connected to the stirring structure (17) via a suction pump, and the other end of the circulation pipe 1 (13) is connected to one of the conical covers (9).

8. The high-efficiency production line for masterbatch for plastics according to claim 5, characterized in that: One end of the mixing barrel (11) is fixedly connected to an extrusion structure (15); The extrusion structure (15) comprises an extrusion barrel, a lower screw feeder arranged inside the extrusion barrel, a molding barrel (161) fixedly connected to the outer end of the extrusion barrel, and a cooling pelletizing structure (16) connected to the molding barrel (161); one end of the mixing barrel (11) is connected to the outer side of the extrusion barrel, and the molding barrel (161) is provided with a plurality of discharge holes (162); The drying structure (14) comprises a drying cylinder and an upper screw feeder arranged inside the drying cylinder, and the outer side of the drying cylinder is attached to the outer side of the extrusion cylinder.

9. The high-efficiency production line for masterbatch for plastics according to claim 5, characterized in that: The cooling and pelletizing structure (16) comprises a water cylinder (163) sleeved on the outside of the forming cylinder (161), a water inlet pipe (160) one end of which is connected to the outside of the water cylinder (163), a water outlet pipe (164) one end of which is connected to the outside of the water cylinder (163), a circulating water pump connected to the water inlet pipe (160) or the water outlet pipe (164), and a fan (169) fixed to the outer end of the forming cylinder (161), wherein the fan (169) sprays airflow toward the position of the discharge hole (162); It also includes a pelletizing cylinder (166) coaxially arranged near the outer end of the forming cylinder (161), fixing plates (165) respectively fixed to both sides of the pelletizing cylinder (166), a cutting knife (167) arranged at the outer end of the pelletizing cylinder (166), a linear slide rod (168) connected to the cutting knife (167), and a linear reciprocating motion mechanism connected to the linear slide rod (168); The pelletizing cylinder (166) is provided with a docking hole, the docking hole being coaxially corresponding to the discharge hole (162), the pelletizing cylinder (166) being fixedly connected to the forming cylinder (161) via the fixing plate (165), and a gap being provided between the pelletizing cylinder (166) and the forming cylinder (161).

10. The high-efficiency production line for masterbatch for plastics according to claim 2, characterized in that: The containing box (4) comprises a horizontally arranged annular plate 1, a vertically arranged annular plate 2, and a closing plate (41) arranged parallel to the annular plate 1, the annular plate 2 being coaxially fixed to the outer edge of the annular plate 1, the annular plate 1 and the closing plate (41) being arranged on the upper and lower sides of the annular plate 2, respectively, and the upper end surface of the annular plate 1 is an inclined surface (411).

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