A plastic extrusion granulation equipment

Abstract

The present invention relates to the technical field of plastic production and processing, and specifically to a plastic extrusion granulation equipment, including a discharge hopper, a spiral extrusion mechanism, a heating furnace, a stirring mechanism, a cooling mechanism, a drying mechanism and a pelletizing mechanism, wherein the spiral extrusion mechanism, the stirring mechanism, the cooling mechanism, the drying mechanism and the pelletizing mechanism are connected in sequence, the discharge hopper is arranged at the top of the spiral extrusion mechanism and communicates with the interior of the spiral extrusion mechanism, and the heating furnace is arranged at the bottom of the spiral extrusion mechanism. The present invention can prevent plastic materials from adhering to the stirring blades, thereby reducing the waste of plastic materials and ensuring the stirring effect, and can also reduce the drying time of plastic materials, avoid the influence of long-term treatment on plastic materials, and can also avoid the plastic performance being easily damaged due to the large temperature difference before and after, affecting its quality.

Description

Technical Field

[0001] The invention relates to the technical field of plastic production and processing, and in particular to a plastic extrusion granulation device. Background Art

[0002] In the plastic industry, plastic raw materials need to be melted and then introduced into the injection molding machine to make plastic products. Different plastic products have different performance requirements, and the required plastic raw materials are also different. These plastic raw materials are made by mixing various raw materials together into strips, and then the plastic raw materials with strip structures are cut into granules by a pelletizer. Before the pelletizer pelletizes, the temperature of the plastic raw materials with strip structures is relatively high, and it is necessary to cool the plastic raw materials by passing them into cooling water.

[0003] However, the existing plastic extrusion granulation equipment has at least the following drawbacks: 1. The structure of the mixer is relatively simple, the mixing effect is not ideal, and the problem of insufficient stirring is prone to occur. Moreover, since plastic has a certain viscosity, it is easy to stick to the stirring head, which will not only cause material waste, but also affect the stirring effect. 2. The plastic raw materials after cooling and cooling have water droplets, and there is a lack of parts to remove water droplets. Not only does it take a long time to dry, it will also affect the performance of the plastic raw materials and even leave water marks, greatly affecting the quality of the plastic raw materials. 3. When the high-temperature plastic raw materials are directly introduced into the cold water, the temperature difference before and after is large, and its performance is easily damaged, affecting the quality of the plastic.

[0004] Therefore, the industry is in urgent need of a solution that can solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a plastic extrusion granulation device to address the deficiencies of the prior art. The object of the present invention can be achieved through the following technical solutions.

[0006] A plastic extrusion granulation device, comprising a discharge hopper, a spiral extrusion mechanism, a heating furnace, a stirring mechanism, a cooling mechanism, a drying mechanism and a pelletizing mechanism, wherein the spiral extrusion mechanism, the stirring mechanism, the cooling mechanism, the drying mechanism and the pelletizing mechanism are connected in sequence, the discharge hopper is arranged at the top of the spiral extrusion mechanism and communicates with the interior of the spiral extrusion mechanism, and the heating furnace is arranged at the bottom of the spiral extrusion mechanism; the stirring mechanism comprises a stirring drive device, a stirring head and a stirring machine body, the stirring head is located in the stirring machine body and is electrically connected to the stirring drive device, the stirring head comprises a stirring base, a first stirring blade, a second stirring blade, a screw and a screw driving device, the screw driving device is fixed on the top of the stirring base, the screw is connected to the screw driving device, and the The first stirring blade is fixed on the stirring base, the second stirring blade is movably connected to the stirring base, an air avoidance groove is provided in the middle of the first stirring blade, the screw passes through the air avoidance groove and is connected to the second stirring blade, the first stirring blade includes a plurality of first blades, the first blade is bent, the second stirring blade includes a plurality of second blades, the second stirring blade is provided with an oblique scraping groove, the screw drives the second stirring blade to move and allows the first blade to be inserted into the oblique scraping groove; the drying mechanism includes a drying component and a water filtering component, the inlet of the drying component is connected to the outlet of the water filtering component; the cooling mechanism includes a cooling trough body and a refrigeration device, the cooling trough body includes a transition trough and a cooling trough in sequence, the temperature of the transition trough is between the temperature of the cooling trough and the temperature of the plastic material.

[0007] Preferably, the water filter assembly includes a water filter trough, a water filter plate, a guide block, a tension spring and a water filter pushing device, the guide block is arranged at the bottom edge of the water filter trough, the water filter plate is provided with a plurality of water filter holes, the water filter plate is obliquely arranged above the guide block, and the downward inclined end of the water filter plate is connected to the trough wall of the water filter trough, the upward inclined end of the water filter plate is provided with a bending portion, the water filter pushing device is fixed on one side of the water filter trough and connected to the bending portion, one end of the tension spring is connected to the bottom surface of the upward inclined end of the water filter plate, and the other end of the tension spring is connected to the water filter trough.

[0008] Preferably, the drying component comprises a drying cabinet, a hair dryer and a transmission device, wherein the hair dryer is arranged on the top of the drying cabinet and is connected to the drying cabinet, and the transmission device is arranged inside the drying cabinet and below the hair dryer.

[0009] Preferably, a drainage block is provided in the cooling groove, and the drainage block includes a side surface, a bottom surface and a drainage surface. The side surface of the drainage block is close to one side wall of the cooling groove, and the bottom surface of the drainage block is close to the bottom surface of the cooling groove. The drainage surface faces the other side wall of the cooling groove. A plurality of water inlets are provided on the side wall of the cooling groove opposite to the drainage surface. A water inlet pipe connected to the refrigeration equipment is provided at the water inlet, and the water inlet pipe is aligned with the bottom end of the drainage surface. A water outlet is provided on the bottom surface of the cooling groove, and the water outlet is provided with a water outlet pipe connected to the refrigeration equipment.

[0010] Preferably, the inclination direction of the oblique scraping groove is consistent with the bending direction of the first blade, and the width of the oblique scraping groove is equal to the thickness of the first blade.

[0011] Preferably, the spiral extrusion mechanism includes a screw barrel, an extrusion screw, a screw driving device, an extrusion head and a gearbox, the extrusion screw is electrically connected to the screw driving device, the gearbox is electrically connected to the screw driving device, and the extrusion screw is arranged in the screw barrel.

[0012] Preferably, a network diversion device is provided at the outlet end of the stirring mechanism, and the network diversion device comprises a network diversion body, a diversion plate and a diversion cylinder, the diversion plate is inserted into the network diversion body, and the diversion cylinder is electrically connected to the diversion plate.

[0013] Preferably, it further comprises a carrying platform, which is arranged at the lower end of the heating furnace.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By arranging two stirring blades in different directions at different positions, it is convenient to stir the plastic in different directions at multiple levels, which is conducive to sufficient and uniform stirring. The second stirring blade can also be driven by the screw to move the first blade through the oblique scraping groove of the second stirring blade. Under the action of the oblique scraping groove, the plastic sticking to the first blade is scraped off, thereby reducing the waste of plastic materials and ensuring the stirring effect.

[0016] 2. A water filter assembly is set at the input end of the drying mechanism, and the plastic material coming out of the cooling tank is sent to the water filter assembly for vibration, so that the water droplets attached to the plastic material are removed, the drying time of the plastic material is reduced, and the influence of long-term treatment on the plastic material is avoided.

[0017] 3. By setting a transition tank with a temperature between the temperature of the cooling tank and the temperature of the plastic material, the high-temperature plastic material is passed into the transition tank for preliminary cooling and then into the cooling tank for cooling, which can avoid the large temperature difference before and after which the plastic performance is easily damaged and its quality is affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the granulation equipment in an embodiment of the present invention.

[0019] Figure 2 Schematic diagram of the structure of the stirring mechanism in the embodiment of the present invention.

[0020] Figure 3 Schematic diagram of the structure of the stirring head in the embodiment of the present invention.

[0021] Figure 4 Schematic diagram of the structure of the drying mechanism in the embodiment of the present invention.

[0022] Figure 5 Schematic diagram of the structure of the water filter assembly in an embodiment of the present invention.

[0023] Figure 6 Schematic diagram of the structure of the cooling mechanism in an embodiment of the present invention.

[0024] Figure 7 Schematic diagram of the structure of the drainage block in an embodiment of the present invention.

[0025] Figure 8 It is a structural schematic diagram of a spiral extrusion mechanism with a hidden spiral drum in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than 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 work belong to the protection scope of the present invention.

[0027] A plastic extrusion granulation equipment, such as Figures 1 to 8As shown, it includes a discharge hopper 1, a spiral extrusion mechanism 2, a heating furnace 3, a stirring mechanism 4, a cooling mechanism 5, a drying mechanism 6 and a pelletizing mechanism 7. The spiral extrusion mechanism 2, the stirring mechanism 4, the cooling mechanism 5, the drying mechanism 6 and the pelletizing mechanism 7 are connected in sequence. The discharge hopper 1 is arranged at the top of the spiral extrusion mechanism 2 and communicates with the interior of the spiral extrusion mechanism 2. The heating furnace 3 is arranged at the bottom of the spiral extrusion mechanism 2. The plastic material enters from the discharge hopper 1 and smoothly falls into the spiral extrusion mechanism 2. Under the action of the spiral extrusion mechanism 2 and the heating furnace 3, the plastic material is compressed and forced to move forward. The temperature of the plastic material rises rapidly to melt it, so that it can be uniformly extruded from the spiral extrusion mechanism 2, and then enters the stirring mechanism 4 for stirring and extrusion, so as to make the plastic material uniform and dense, and then falls into the cooling mechanism 5 to cool the plastic material, and then passes through the drying mechanism 6 to dry the plastic material and then is sent to the pelletizing mechanism 7 for cutting into granules.

[0028] like Figure 2 As shown, the stirring mechanism 4 includes a stirring driving device 41, a stirring head 43 and a stirring machine body 42. The stirring head 43 is located in the stirring machine body 42 and is electrically connected to the stirring driving device 41. Figure 3As shown, the stirring head 43 includes a stirring base 431, a first stirring blade 432, a second stirring blade 433, a screw 434 and a screw driving device 435. The stirring base 431 provides adaptability conditions for the installation of various components. The screw driving device 435 is fixed on the top of the stirring base 431. The screw 434 is connected to the screw driving device 435. The screw driving device 435 provides the power required for the screw 434 to work. The first stirring blade 432 is fixed on the stirring base 431 to rotate with the stirring base 431 to stir the plastic material. The second stirring blade 433 is movably connected to the stirring base 431, a clearance groove is provided in the middle of the first stirring blade 432, the screw 434 passes through the clearance groove and is connected to the second stirring blade 433, the first stirring blade 432 includes a plurality of first blades, the first blades are bent, the second stirring blade 433 includes a plurality of second blades, the second stirring blade 433 is provided with an oblique scraping groove 436, the screw 434 drives the second stirring blade 433 to move and allows the first blade to be inserted into the oblique scraping groove 436. In a general state, the second stirring blade 433 is relatively immobile on the stirring base 431, and then rotates with the stirring base 431 to stir the plastic material. When it is necessary to scrape off the plastic stuck on the first blade, under the action of the screw driving device 435, the screw 434 is driven to move upward, and the second stirring blade 433 connected to the screw 434 also moves upward with the screw 434, so that the first blade of the first stirring blade 432 is inserted into the oblique scraping groove 436 of the second stirring blade 433, and then the plastic attached to the first blade is scraped off. The operation is simple, convenient and fast.

[0029] like Figure 4 As shown, the drying mechanism 6 includes a drying component 62 and a water filter component 61. The inlet of the drying component 62 is connected to the outlet of the water filter component 61. The plastic material with water droplets attached after the cooling treatment of the cooling mechanism 5 in the previous process is sent to the water filter component 61 for water drop removal and then sent to the drying component 62. Figure 6 As shown, the cooling mechanism 5 includes a cooling trough body 51 and a refrigeration device 52. The cooling trough body 51 includes a transition trough 511 and a cooling trough 512 in sequence. The temperature of the transition trough 511 is between the temperature of the cooling trough 512 and the temperature of the plastic material. The high-temperature plastic material is passed through the transition trough 511 for preliminary cooling and then passed through the cooling trough 512 for cooling. This can avoid the plastic performance being easily damaged due to the large temperature difference between the front and the back, thereby affecting its quality.

[0030] The plastic extrusion granulation equipment provided in this embodiment, on the one hand, is convenient for stirring the plastic in different directions at multiple levels by setting two stirring blades in different directions at different positions, which is conducive to sufficient and uniform stirring, and can also drive the second stirring blade 433 to move through the oblique scraping groove 436 of the second stirring blade 433 through the screw 434, so that the first blade passes through the oblique scraping groove 436 of the second stirring blade 433, and the plastic adhering to the first blade is scraped off under the action of the oblique scraping groove 436, thereby reducing the waste of plastic materials and ensuring the stirring effect. On the other hand, a water filter component 61 is set at the input end of the drying mechanism 6, and the plastic material coming out of the cooling groove 512 is sent to the water filter component 61 for vibration, so that the water droplets attached to the plastic material are removed, reducing the drying time of the plastic material, and avoiding the influence of long-term treatment on the plastic material. Furthermore, by setting a transition groove 511 whose temperature is between the temperature of the cooling groove 512 and the temperature of the plastic material, the high-temperature plastic material is passed into the transition groove 511 for preliminary cooling and then into the cooling groove 512 for cooling, thereby avoiding the large temperature difference between the front and the back causing the plastic performance to be easily damaged and affecting its quality.

[0031] A plastic extrusion granulation device provided in this embodiment, such as Figure 4 and Figure 5 As shown, the water filter assembly 61 includes a water filter trough 611, a water filter plate 612, a guide block 613, a tension spring 614 and a water filter push device 615. The guide block 613 is arranged at the bottom edge of the water filter trough 611, and is used to guide the fallen water drops to a predetermined position for processing, so as to avoid adverse effects on the drying equipment. The water filter plate 612 is provided with a plurality of water filter holes, which can flow out the fallen water drops. The water filter plate 612 is arranged obliquely above the guide block 613. On the one hand, the oblique arrangement facilitates the water drops that fall from the plastic material to flow away, and on the other hand, it also provides suitable conditions for the water filter assembly 61 to vibrate and dewater. And the downwardly inclined end of the water filter plate 612 is connected to the groove wall of the water filter trough 611, that is, the downwardly inclined end of the water filter plate 612 is relatively fixed on the groove wall, which can be achieved by means of positioning and buckling. The upwardly inclined end of the water filter plate 612 is provided with a bending portion 616, and the water filter pusher 615 is fixed to one side of the water filter tank 611 and connected to the bending portion 616, so that the water filter pusher 615 pushes the bending portion 616 to raise the upwardly inclined end of the water filter plate 612 to a certain height, thereby vibrating to remove water drops. One end of the tension spring 614 is connected to the bottom surface of the upwardly inclined end of the water filter plate 612, and the other end of the tension spring 614 is connected to the water filter tank 611, so that the upwardly moving water filter plate 612 is pulled back to its original position by the tension of the tension spring 614, thereby generating a vibration effect.

[0032] A plastic extrusion granulation device provided in this embodiment, such as Figure 4As shown, the drying component 62 includes a drying cabinet 621, a hair dryer 622 and a transmission device 623. The hair dryer 622 is arranged on the top of the drying cabinet 621 and is connected to the drying cabinet 621. The transmission device 623 is arranged inside the drying cabinet 621 and is located below the hair dryer 622.

[0033] A plastic extrusion granulation device provided in this embodiment, such as Figure 7 As shown, a drainage block 53 is provided in the cooling groove 512, and the drainage block 53 includes a side surface 531, a bottom surface 532 and a drainage surface 533. The side surface 531 of the drainage block 53 is in close contact with one side wall of the cooling groove 512, and the bottom surface 532 of the drainage block 53 is in close contact with the bottom surface of the cooling groove 512. The drainage surface 533 faces the other side wall of the cooling groove 512. A plurality of water inlets are provided on the side wall of the cooling groove 512 opposite to the drainage surface 533. A water inlet pipe connected to the refrigeration equipment 52 is provided at the water inlet, and the water inlet pipe is aligned with the bottom end of the drainage surface 533. A water outlet is provided on the bottom surface of the cooling groove 512, and the water outlet is provided with a water outlet pipe connected to the refrigeration equipment 52. The plastic material is sequentially introduced into the transition trough 511 and the cooling trough 512. A drainage block 53 is arranged in the cooling trough 512 and the water inlet pipe is aligned with the bottom end of the drainage surface 533, so that the cooling water from the refrigeration equipment 52 can be drained to the plastic material for primary cooling. Then, the cooling water flows downward along the drainage block 53 under the action of gravity to cool the plastic material again, so that the plastic material can be fully cooled.

[0034] A plastic extrusion granulation device provided in this embodiment, such as Figure 3 As shown, the inclination direction of the oblique scraping groove 436 is consistent with the bending direction of the first blade, ensuring that the first blade can be smoothly inserted into the oblique scraping groove 436, and the width of the oblique scraping groove 436 is equal to the thickness of the first blade, so that the oblique scraping groove 436 can just allow the first blade to enter, and the plastic material stuck to the surface of the first blade is scraped off the first blade under the action of the oblique scraping groove 436.

[0035] A plastic extrusion granulation device provided in this embodiment, such as Figure 8 As shown, the spiral extrusion mechanism 2 includes a spiral barrel, an extrusion screw 21, a screw driving device 22, an extrusion head 24 and a gearbox 23. The extrusion screw 21 is electrically connected to the screw driving device 22 to achieve spiral extrusion of plastic material. The gearbox 23 is electrically connected to the screw driving device 22 to adjust the operating speed of the screw driving device 22. The extrusion screw 21 is arranged in the spiral barrel.

[0036] A plastic extrusion granulation device provided in this embodiment, such as Figure 2As shown, the outlet end of the stirring mechanism 4 is provided with a road network diversion device 44, which can form a strong extrusion pressure. The road network diversion device 44 includes a road network diversion body 441, a diversion plate 442 and a diversion cylinder 443. The diversion plate 442 is inserted into the road network diversion body 441, and the diversion cylinder 443 is electrically connected to the diversion plate 442, thereby pushing the diversion plate to move in the road network diversion body, thereby adjusting the extrusion pressure.

[0037] The plastic extrusion granulation equipment provided in this embodiment also includes a carrying platform, which is arranged at the lower end of the heating furnace 3 to facilitate carrying various components.

[0038] The present invention is further described above with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in the field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A plastic extrusion granulation equipment, characterized in that: The invention comprises a discharge hopper, a spiral extrusion mechanism, a heating furnace, a stirring mechanism, a cooling mechanism, a drying mechanism and a pelletizing mechanism, wherein the spiral extrusion mechanism, the stirring mechanism, the cooling mechanism, the drying mechanism and the pelletizing mechanism are connected in sequence, the discharge hopper is arranged at the top of the spiral extrusion mechanism and is connected to the interior of the spiral extrusion mechanism, and the heating furnace is arranged at the bottom of the spiral extrusion mechanism: the stirring mechanism comprises a stirring drive device, a stirring head and a stirring machine body, the stirring head is located in the stirring machine body and is electrically connected to the stirring drive device, the stirring head comprises a stirring base, a first stirring blade, a second stirring blade, a screw and a screw driving device, the screw driving device is fixed on the top of the stirring base, the screw is connected to the screw driving device, the first stirring blade The second stirring blade is fixed on the stirring base, and is movably connected to the stirring base. An air avoidance groove is provided in the middle of the first stirring blade, and the screw passes through the air avoidance groove and is connected to the second stirring blade. The first stirring blade includes a plurality of first blades, and the first blades are bent. The second stirring blade includes a plurality of second blades, and the second stirring blade is provided with an oblique scraping groove. The screw drives the second stirring blade to move and inserts the first blade into the oblique scraping groove. The drying mechanism includes a drying component and a water filtering component, and the inlet of the drying component is connected to the outlet of the water filtering component. The cooling mechanism includes a cooling tank body and a refrigeration device, and the cooling tank body includes a transition tank and a cooling tank in sequence, and the temperature of the transition tank is between the temperature of the cooling tank and the temperature of the plastic material. A drainage block is provided in the cooling trough, and the drainage block includes a side surface, a bottom surface and a drainage surface. The side surface of the drainage block is in close contact with one side wall of the cooling trough, and the bottom surface of the drainage block is in close contact with the bottom surface of the cooling trough. The drainage surface faces the other side wall of the cooling trough. A plurality of water inlets are provided on the side wall of the cooling trough opposite to the drainage surface. A water inlet pipe connected to the refrigeration equipment is provided at the water inlet, and the water inlet pipe is aligned with the bottom end of the drainage surface. A water outlet is provided on the bottom surface of the cooling trough, and the water outlet is provided with a water outlet pipe connected to the refrigeration equipment. A network diversion device is provided at the outlet end of the stirring mechanism. The network diversion device includes a network diversion body, a diversion plate and a diversion cylinder. The diversion plate is inserted into the network diversion body, and the diversion cylinder is electrically connected to the diversion plate.

2. A plastic extrusion granulation equipment according to claim 1, characterized in that: The water filter assembly includes a water filter trough, a water filter plate, a guide block, a tension spring and a water filter pushing device. The guide block is arranged at the bottom edge of the water filter trough, the water filter plate is provided with a plurality of water filter holes, the water filter plate is obliquely arranged above the guide block, and the downwardly inclined end of the water filter plate is connected to the trough wall of the water filter trough, the upwardly inclined end of the water filter plate is provided with a bending portion, the water filter pushing device is fixed to one side of the water filter trough and connected to the bending portion, one end of the tension spring is connected to the bottom surface of the upwardly inclined end of the water filter plate, and the other end of the tension spring is connected to the water filter trough.

3. A plastic extrusion granulation equipment according to claim 1, characterized in that: The drying assembly includes a drying cabinet, a hair dryer and a transmission device. The hair dryer is arranged on the top of the drying cabinet and is connected to the drying cabinet. The transmission device is arranged inside the drying cabinet and is located below the hair dryer.

4. A plastic extrusion granulation equipment according to claim 1, characterized in that: The inclination direction of the oblique scraping groove is consistent with the bending direction of the first blade, and the width of the oblique scraping groove is equal to the thickness of the first blade.

5. The plastic extrusion granulation equipment according to claim 1, characterized in that: The spiral extrusion mechanism includes a screw barrel, an extrusion screw, a screw driving device, an extrusion head and a gearbox. The extrusion screw is electrically connected to the screw driving device, the gearbox is electrically connected to the screw driving device, and the extrusion screw is arranged in the screw barrel.

6. A plastic extrusion granulation equipment according to claim 1, characterized in that: It also includes a carrying platform, which is arranged at the lower end of the heating furnace.

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