Efficient and uniform plastic particle automatic stirring machine

Abstract

The invention belongs to the technical field of plastic stirring, and particularly relates to an efficient uniform plastic particle automatic stirring machine which comprises a stirring barrel and a controller mounted on the outer side wall of the stirring barrel, and further comprises a stirring unit mounted in the stirring barrel; the two circulating feeding units are symmetrically arranged on the side wall of the stirring barrel, the feeding ends and the discharging ends of the two circulating feeding units communicate with the interior of the stirring barrel, and the stirring unit and the two circulating feeding units are jointly provided with a transmission mechanism. According to the plastic particle mixing device, the mixing efficiency of plastic particles can be improved in an external circulation flowing mode, stirring work can be automatically stopped under the condition that the mixing uniformity of the plastic particles is ensured, time waste is reduced, meanwhile, water vapor and dust of the plastic particles can be reduced, and the preparation quality of subsequent plastic products can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic stirring, and in particular relates to an efficient and uniform automatic stirring machine for plastic particles. Background Art

[0002] Plastic particles are widely used in modern industry, such as plastic product manufacturing, runway paving, etc. Plastic particle mixer plays a key role in it. The uniform mixing of plastic particles is crucial to product quality. Through the efficient operation of the mixer, plastic particles of different colors and materials can be fully mixed to ensure that the product meets the standard requirements in performance and appearance.

[0003] At present, common plastic pellet mixers mainly include a mixing barrel and a mixing mechanism, and the mixing mechanism is used to quickly and evenly mix the plastic pellets to achieve the purpose of quickly mixing the plastic pellets, such as a plastic pellet mixer disclosed in patent announcement number CN221267806U;

[0004] When plastic pellet mixers are used today, they are usually stirred by timed stirring. For example, the stirring time is set to 20 minutes, and then the plastic pellets are turned out, or after stirring for a certain period of time, a person manually checks whether the plastic pellets are evenly mixed, and then decides whether to end the stirring work. First, when stirring at a fixed time, the timing is usually set based on the time required for uniform stirring in the past. However, since each batch of plastic pellets is different (for example, the particle size of the plastic pellets that need to be stirred is different), the amount of plastic pellets that need to be stirred is also different, so it is difficult to reasonably set the timed stirring time. Insufficient timed time will result in uneven stirring and mixing, and too long timed time will affect the overall efficiency and increase unnecessary energy consumption. The method of manually checking whether the mixing is uniform will be affected by human subjective consciousness and is not accurate enough, which may affect the preparation quality of subsequent plastic products. Summary of the invention

[0005] The object of the present invention is to provide a highly efficient and uniform automatic mixer for plastic particles in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: an efficient and uniform automatic plastic granule mixer, comprising a mixing barrel and a controller installed on the outer wall of the mixing barrel, and also comprising:

[0007] A stirring unit is installed inside the stirring barrel;

[0008] Two circulating feeding units are symmetrically arranged on the side wall of the mixing barrel, and the feeding end and the discharging end of the two circulating feeding units are both connected to the inside of the mixing barrel, and the mixing unit and the two circulating feeding units are jointly equipped with a transmission mechanism;

[0009] Two boxes are symmetrically arranged on the outer side wall of the mixing barrel, and both boxes are connected to the circulating feeding unit on the same side;

[0010] Two air separation processing units are arranged on the side wall of the box body on the same side, and a starting mechanism is installed inside the two boxes;

[0011] The two air outlet pipes are both fixedly plugged into the top of the box body on the same side, and the pipe walls of the two air outlet pipes are both fixedly connected with a trigger mechanism.

[0012] Preferably, the stirring unit includes a stirring shaft rotatably arranged at the bottom of the stirring barrel, and a stirring blade is fixedly sleeved on the shaft wall of the stirring shaft, a driving motor is fixedly installed at the bottom of the stirring barrel, and the output end of the driving motor is transmission-connected to the stirring shaft, and the driving motor is electrically connected to the controller.

[0013] Preferably, the two circulating feeding units each include a feed barrel and a discharge barrel fixedly inserted into the side wall of the mixing barrel, and the feed barrel is located above the discharge barrel, the inner walls of the feed barrel and the discharge barrel are rotatably connected to a feed shaft, and the shaft wall of the feed shaft is fixedly sleeved with a spiral feeding blade, when the spiral feeding blades inside the feed barrel and the discharge barrel rotate in the same direction, the movement directions of the plastic particles inside the feed barrel and the discharge barrel are opposite, the two feeding shafts are connected together by a belt drive assembly, a drop pipe is fixedly inserted into the end of the lower barrel wall of the feed barrel away from the mixing barrel, and the drop pipe is connected to the box body, two discharge holes are provided at the bottom of the box body, and a receiving hopper connected to the two discharge holes is fixedly installed at the bottom of the box body, and the receiving hopper is connected to the discharge barrel.

[0014] Preferably, the transmission mechanism includes an isolation cover fixedly mounted on the inner bottom of the mixing barrel, and the stirring main shaft is rotatably connected to the top of the isolation cover, the feeding shafts in the two discharge barrels are rotatably connected to the side walls of the isolation cover, and the stirring main shaft and the two feeding shafts on the same side are transmission-connected via a bevel gear assembly.

[0015] Preferably, the two air separation processing units each include a mounting cover fixedly mounted on the side wall of the box body away from the mixing barrel, a hot air blower is fixedly mounted inside the mounting cover, and the air inlet end of the hot air blower passes through the side wall of the mounting cover, a plurality of blowing holes are provided on the side wall of the box body located inside the mounting cover, and the hot air blower is electrically connected to the controller.

[0016] Preferably, the starting mechanism includes a lamp board fixedly mounted on one side of the two discharge holes, and a photosensitive resistor is fixedly mounted on the hole wall on the side opposite to the discharge hole and the lamp board on the same side, and two normally closed electromagnetic switches, two normally open electromagnetic switches and two electric regulating resistors are fixedly mounted on the inner wall of the box body, and each of the photosensitive resistors is connected in series with the corresponding normally closed electromagnetic switch, normally open electromagnetic switch and electric regulating resistor through a controller.

[0017] Preferably, the trigger mechanism includes a first diverter pipe fixedly plugged into the wall of the air outlet duct, a first normally closed solenoid valve is installed inside the first diverter pipe, and a normally open solenoid valve is installed inside the air outlet duct at a position above the first diverter pipe, a temperature detector is fixedly plugged into the wall of the first diverter pipe near the air outlet end, the detection end of the temperature detector is arranged inside the first diverter pipe, and the controller controls the operation of the first normally closed solenoid valve and the normally open solenoid valve according to the electrical signals output by the normally closed solenoid switch and the normally open solenoid switch.

[0018] Preferably, an infrared spotlight is fixedly installed on the inner wall of the air outlet duct, and an infrared detector is fixedly installed on the inner wall of the air outlet duct on the side opposite to the infrared spotlight, a second diversion pipe is fixedly plugged into the pipe wall of the air outlet duct, and a second normally closed solenoid valve is installed inside the second diversion pipe, a gas flow meter is fixedly plugged into the pipe wall of the second diversion pipe, the controller controls the operation of the second normally closed solenoid valve and the normally open solenoid valve according to the electrical signal output by the infrared detector, and the gas flow meter and the infrared spotlight are both electrically connected to the controller.

[0019] Compared with the existing technology, the advantages of an efficient and uniform plastic particle automatic mixer are:

[0020] 1. Through the cooperation of the stirring barrel, the controller and the stirring unit, the plastic particles can be quickly and evenly stirred. Through the cooperation of the circulating feeding unit and the transmission mechanism, the plastic particles can be circulated externally during the stirring process, thereby increasing the mixing efficiency of the plastic particles and improving the mixing uniformity of the plastic particles.

[0021] 2. Through the cooperation of the provided box and the air separation processing unit, the moisture and dust that may be adsorbed by the plastic particles can be removed as much as possible during the external circulation of the plastic particles, thereby preventing the plastic particles from agglomerating due to moisture under the action of the stirring and extruding force, affecting the mixing effect, and also helping to improve the subsequent preparation quality of the plastic particles.

[0022] 3. Through the cooperation of the start mechanism and the trigger mechanism, the air separation processing unit can be coordinated to regularly detect whether the plastic particles are evenly mixed, and automatically stop stirring after the plastic particles are evenly mixed, thereby ensuring uniform mixing while minimizing time waste and ensuring overall work efficiency.

[0023] 4. Through the cooperation of the infrared spotlight, infrared detector, second shunt pipe, second normally closed solenoid valve and gas flow meter, based on the amount of moisture and dust removed by the air separation processing unit, when the amount of moisture and dust inside the plastic particles is large, it can automatically remind personnel to improve the raw material storage environment or the front processing procedures, thereby indirectly improving the preparation quality of plastic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a highly efficient and uniform plastic particle automatic mixer provided by the present invention;

[0025] Figure 2 It is a schematic diagram of the connection structure of a feed barrel and a discharge barrel of an efficient and uniform plastic particle automatic mixer provided by the present invention;

[0026] Figure 3 It is a cross-sectional structural schematic diagram of an efficient and uniform plastic particle automatic mixer provided by the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of a box of an efficient and uniform plastic particle automatic mixer provided by the present invention;

[0028] Figure 5 The invention provides a high-efficiency and uniform automatic plastic particle mixer. Figure 4 A magnified view of the structure of part A;

[0029] Figure 6 The present invention provides a schematic diagram of the internal structure of an air outlet duct of a high-efficiency and uniform plastic particle automatic mixer.

[0030] In the figure: 1 a mixing barrel, 2 a controller, 3 a mixing unit, 31 a mixing spindle, 32 a mixing blade, 33 a driving motor, 4 a circulating feeding unit, 41 a feeding barrel, 42 a discharging barrel, 43 a feeding shaft, 44 a spiral feeding blade, 45 a belt transmission assembly, 46 a dropping pipe, 47 a discharging hole, 48 a receiving hopper, 5 a transmission mechanism, 51 an isolation cover, 52 a bevel gear assembly, 6 a box, 7 an air selection processing unit, 71 a mounting cover, 72 a hot air blower, 73 an air blowing hole, 8 a starting mechanism, 81 a lamp board, 82 a photosensitive resistor, 83 a normally closed electromagnetic switch, 84 a normally open electromagnetic switch, 85 an electric regulating resistor, 9 an air outlet pipe, 10 a trigger mechanism, 101 a first shunt pipe, 102 a first normally closed electromagnetic valve, 103 a normally open electromagnetic valve, 104 a temperature detector, 11 an infrared spotlight, 12 an infrared detector, 13 a second shunt pipe, 14 a second normally closed electromagnetic valve, and 15 a gas flow meter. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] like Figure 1-Figure 6As shown, an efficient and uniform automatic mixer for plastic particles comprises a mixing barrel 1 and a controller 2 installed on the outer wall of the mixing barrel 1, and also comprises: a mixing unit 3, the mixing unit 3 is installed inside the mixing barrel 1, the mixing unit 3 comprises a mixing spindle 31 rotatably arranged at the bottom of the mixing barrel 1, and a mixing blade 32 is fixedly sleeved on the shaft wall of the mixing spindle 31, a driving motor 33 is fixedly installed at the bottom of the mixing barrel 1, and the output end of the driving motor 33 is transmission-connected to the mixing spindle 31, and the driving motor 33 is electrically connected to the controller 2, wherein a discharge port and a sealing cover for sealing the discharge port are provided at the bottom of the mixing barrel 1, and after the mixing is completed, the sealing cover is opened to discharge the plastic particles through the discharge port.

[0033] The two circulating feeding units 4 are symmetrically arranged on the side wall of the mixing barrel 1, and the feeding end and the discharging end of the two circulating feeding units 4 are connected to the inside of the mixing barrel 1, the mixing unit 3 and the two circulating feeding units 4 are jointly installed with a transmission mechanism 5, the two circulating feeding units 4 include a feeding cylinder 41 and a discharging cylinder 42 fixedly inserted into the side wall of the mixing barrel 1, and the feeding cylinder 41 is located above the discharging cylinder 42, the inner walls of the feeding cylinder 41 and the discharging cylinder 42 are rotatably connected with a feeding shaft 43, and the shaft wall of the feeding shaft 43 is fixedly sleeved with a spiral feeding blade 44, when the spiral feeding blades 44 inside the feeding cylinder 41 and the discharging cylinder 42 rotate in the same direction, the moving directions of the plastic particles inside the feeding cylinder 41 and the discharging cylinder 42 are opposite, and the two feeding shafts 43 are jointly connected through a belt transmission assembly 45 for transmission, and the feeding A drop pipe 46 is fixedly inserted at one end of the lower wall of the barrel 41 away from the mixing barrel 1, and the drop pipe 46 is connected to the box body 6. Two discharge holes 47 are provided at the bottom of the box body 6, and a receiving hopper 48 connected to the two discharge holes 47 is fixedly installed at the bottom of the box body 6. The receiving hopper 48 is connected to the discharge barrel 42. The belt drive assembly 45 includes components such as a belt, a pulley, and a tensioning wheel. The tensioning wheel is installed on the outer wall of the mounting cover 71. When the lower feed shaft 43 rotates, the upper feed shaft 43 can be synchronously driven to rotate through the pulley, the belt and the tensioning wheel. Among them, the box body 6 is provided with an inclined baffle below the discharge end of the drop pipe 46, which is used to buffer and disperse the plastic particles falling from the drop pipe 46 to avoid excessive concentration of the plastic particles and affect the separation effect of the plastic particles.

[0034] The transmission mechanism 5 includes an isolation cover 51 fixedly installed on the inner bottom of the mixing barrel 1, and the stirring main shaft 31 is rotatably connected to the top of the isolation cover 51, and the feeding shafts 43 in the two discharge barrels 42 are rotatably connected to the side walls of the isolation cover 51. The stirring main shaft 31 and the two feeding shafts 43 on the same side are transmission-connected through a bevel gear assembly 52. ​​The bevel gear assembly 52 includes a driving bevel gear and two driven bevel gears. The stirring main shaft 31 drives the two driven bevel gears to drive the feeding shaft 43 to rotate through the driving bevel gear.

[0035] The two boxes 6 are symmetrically arranged on the outer wall of the mixing barrel 1, and the two boxes 6 are connected to the circulating feeding unit 4 on the same side. The two air separation processing units 7 are arranged on the side wall of the box 6 on the same side. A starting mechanism 8 is installed inside the two boxes 6. The two air separation processing units 7 include a mounting cover 71 fixedly installed on the side wall of the box 6 away from the mixing barrel 1. A hot air blower 72 is fixedly installed inside the mounting cover 71, and the air inlet end of the hot air blower 72 passes through the side wall of the mounting cover 71. A plurality of blowing holes 73 are opened on the side wall of the box 6 located inside the mounting cover 71. The hot air blower 72 is electrically connected to the controller 2, and the hot air blower 72 can operate in high power and low power states.

[0036] The starting mechanism 8 includes a lamp board 81 fixedly mounted on one side of the two discharge holes 47, and a photosensitive resistor 82 is fixedly mounted on the hole wall on the side opposite to the lamp board 81 on the same side of the discharge hole 47. Two normally closed electromagnetic switches 83, two normally open electromagnetic switches 84 and two electric regulating resistors 85 are fixedly mounted on the inner wall of the box body 6. Each photosensitive resistor 82 is connected in series with the corresponding normally closed electromagnetic switch 83, normally open electromagnetic switch 84 and electric regulating resistor 85 through the controller 2.

[0037] The two air outlet pipes 9 are fixedly plugged into the top of the box body 6 on the same side, and the pipe walls of the two air outlet pipes 9 are fixedly connected to a trigger mechanism 10. The trigger mechanism 10 includes a first diverter pipe 101 fixedly plugged into the pipe wall of the air outlet pipe 9, a first normally closed solenoid valve 102 is installed inside the first diverter pipe 101, and a normally open solenoid valve 103 is installed inside the air outlet pipe 9 at a position above the first diverter pipe 101. A temperature detector 104 is fixedly plugged into the pipe wall of the first diverter pipe 101 near the air outlet end, and the detection end of the temperature detector 104 is arranged inside the first diverter pipe 101. The controller 2 controls the first normally closed solenoid valve 102 and the normally open solenoid valve 103 to work according to the electrical signals output by the normally closed solenoid switch 83 and the normally open solenoid switch 84. The temperature detector 104 can monitor the temperature and output an electrical signal to the controller 2 after the temperature reaches a threshold value. This is an existing mature technology, so it will not be elaborated here.

[0038] An infrared spotlight 11 is fixedly installed on the inner wall of the air outlet pipe 9, and an infrared detector 12 is fixedly installed on the inner wall of the air outlet pipe 9 on the side opposite to the infrared spotlight 11. A second shunt pipe 13 is fixedly plugged into the pipe wall of the air outlet pipe 9, and a second normally closed solenoid valve 14 is installed inside the second shunt pipe 13. A gas flow meter 15 is fixedly plugged into the pipe wall of the second shunt pipe 13. The controller 2 controls the operation of the second normally closed solenoid valve 14 and the normally open solenoid valve 103 according to the electrical signal output by the infrared detector 12. The gas flow meter 15 and the infrared spotlight 11 are both electrically connected to the controller 2. The infrared detector 12 can monitor the infrared intensity in real time, and automatically output an electrical signal to the controller 2 after the infrared intensity reaches a threshold value, while the gas flow meter 15 can monitor the gas flow passing through, and display the monitoring results in real time on the display end of the controller 2. This is an existing mature technology, so it will not be elaborated here.

[0039] The operating principle of the present invention is described as follows: the plastic particles with a good proportion are poured into the mixing barrel 1, and then the barrel cover of the mixing barrel 1 is closed, and then the controller 2 is started;

[0040] After the controller 2 is started, it will immediately control the drive motor 33 to work. The drive motor 33 can drive the stirring main shaft 31 to drive the stirring blade 32 to rotate, so that the plastic particles inside the stirring barrel 1 can be quickly stirred, so that different plastic particles can be quickly and evenly mixed. When the stirring main shaft 31 rotates, the two feeding shafts 43 on the same side will be driven to rotate through the bevel gear assembly 52. ​​Through the belt transmission assembly 45, the feeding shafts 43 inside the two feeding barrels 41 can be rotated synchronously. When the spiral feeding blades 44 inside the feeding barrel 41 and the discharging barrel 42 rotate, the moving directions of the plastic particles inside the feeding barrel 41 and the discharging barrel 42 are opposite. Therefore, the plastic particles entering the feeding barrel 41 will be pushed toward the direction of the dropping pipe 46 by the spiral feeding blades 44 inside the feeding barrel 41 (during the stirring Under the action of the blades 32, the plastic particles inside the mixing barrel 1 remain in a moving state, and the moving plastic particles will be squeezed into the feed barrel 41), until the plastic particles move to the position of the drop tube 46, and the plastic particles fall into the box body 6 through the drop tube 46, and fall into the discharge barrel 42 through the discharge hole 47 and the receiving hopper 48. Under the action of the spiral feeding blades 44 inside the discharge barrel 42, the plastic particles inside the discharge barrel 42 will be returned to the mixing barrel 1. The cyclic feeding method of feeding through the feed barrel 41 and discharging from the discharge barrel 42 can increase the flow range of the plastic particles during the stirring of the plastic particles by the stirring blades 32, and improve the exchange speed of the upper plastic particles and the lower plastic particles, thereby helping to increase the efficiency of uniform mixing of the plastic particles.

[0041] After the controller 2 is started, the hot air blower 72 will be started synchronously, and the hot air blower 72 will work in a low-power state. At this time, the hot air blower 72 will blow a low-flow rate airflow into the box body 6 through the blowing hole 73. Under the action of the low-flow rate airflow and the hot airflow, the water vapor and dust on the surface of the plastic particles will be blown away as much as possible (because the plastic particles may absorb moisture and dust during storage, and moisture will increase the adhesion of the plastic particles, and under the action of the stirring and extrusion force, the plastic particles are easy to agglomerate, and the dust will affect the quality of the subsequent preparation of plastic products). By reducing the water vapor and dust on the surface of the plastic particles, it is not only beneficial to improve the mixing uniformity of the plastic particles, but also to improve the preparation quality of the subsequent plastic products, and the airflow carrying water vapor and dust will be discharged through the air outlet 9 (wherein, in order to prevent the hot air blower 72 from sending external dust into the box body 6, causing secondary contamination of the plastic particles, a dust filter or other structure can be installed at the air inlet end of the hot air blower 72 to prevent dust in the external air from causing secondary contamination of the plastic particles);

[0042] The controller 2 starts the uniformity detection work every 3 minutes. When the controller 2 starts the uniformity detection work, it controls the hot air blower 72 to run at high power (the power can be adjusted by the controller 2 according to the size of the plastic particles to be stirred and mixed as needed). At this time, the plastic particles passing through the box 6 are blown to different distances by the airflow under the action of the high-speed airflow. For example, when the plastic particles with a particle size of 3 mm are mixed with the plastic particles with a particle size of 1.2 mm, the hot air blower 72 is in a high-power state, and the airflow velocity delivered by the hot air blower 72 reaches 15 meters per second. At this time, due to the large mass of the plastic particles with a particle size of 3 mm, the plastic particles are less affected by the airflow under the action of gravity. Therefore, the 3 mm plastic particles will fall vertically and be discharged through the discharge hole 47 close to the hot air blower 72. The plastic particles with a particle size of 1.2 mm are offset by the airflow due to their small mass and are discharged through the discharge hole 47 far away from the hot air blower 72.

[0043] When the controller 2 starts a uniformity detection operation, it will synchronously control the two light boards 81 to work, and connect the photosensitive resistor 82 with the corresponding electric regulating resistor 85, the normally closed electromagnetic switch 83 and the normally open electromagnetic switch 84. If the plastic particles have not been stirred evenly at this time, there are more plastic particles of the same kind. Therefore, more plastic particles pass through one of the discharge holes 47, while fewer plastic particles pass through the other discharge hole 47. For the discharge hole 47 with more plastic particles, more light is blocked by the light board 81 due to more plastic particles passing through. At this time, the light intensity irradiated to the photosensitive resistor 82 on this side is relatively low (the photosensitive resistor 82 is in the range of 10Lux to 200Lux, and its own resistance decreases synchronously with the increase of light intensity). At this time, the electric current of the photosensitive resistor 82 The resistance is too high, so the current passing into the normally closed electromagnetic switch 83 and the normally open electromagnetic switch 84 corresponding to the photosensitive resistor 82 is too small. At this time, the normally closed electromagnetic switch 83 remains in a closed state, while the normally open electromagnetic switch 84 remains in an open state. Therefore, the controller 2 will only receive the closing electrical signal of the normally closed electromagnetic switch 83. For the discharge hole 47 with fewer plastic particles passing through, since fewer plastic particles pass through, less light is blocked. At this time, the normally closed electromagnetic switch 83 and the normally open electromagnetic switch 84 corresponding to the photosensitive resistor 82 in the discharge hole 47 will remain in an open state and the normally open electromagnetic switch 84 will remain in a closed state because the current passing through is too large. Therefore, the controller 2 will receive the closing electrical signal of the normally open electromagnetic switch 84 on this side. At this time, the controller 2 will not control the first normally closed electromagnetic valve 102 to work;

[0044] As the plastic particles are gradually stirred and mixed evenly, the amount of plastic particles passing through each discharge hole 47 is appropriate, and the current intensity passing through the corresponding normally open electromagnetic switch 84 and the normally closed electromagnetic switch 83 is moderate (due to the different particle sizes of different types of plastic particles, the connection loop resistance between the photosensitive resistor 82 and the normally open electromagnetic switch 84 and the normally closed electromagnetic switch 83 can be adjusted by the electric resistor 85). At this time, the normally closed electromagnetic switch 83 will remain in an open state due to the passage of a sufficiently large current, and the normally open electromagnetic switch 84 will also remain in an open state due to the passage of an insufficient current. Therefore, when the plastic particles are stirred and mixed evenly, the controller 2 will not receive the closing electrical signal of the normally open electromagnetic switch 84 and the normally closed electromagnetic switch 83. At this time, the controller 2 will control the normally open electromagnetic valve 103 and the first normally closed electromagnetic valve 102 to be energized. At this time, the airflow passing through the inside of the air outlet pipe 9 will be discharged through the first diversion pipe 101. Since the airflow delivered by the hot air blower 72 has a certain amount of heat, When the airflow passes through the first shunt pipe 101, the airflow can heat up the detection end of the temperature detector 104. After the temperature detector 104 detects that the temperature rises to a preset value (the preset value can be adjusted according to the temperature heated by the hot air blower 72), the temperature detector 104 will transmit an electrical signal to the controller 2. If the controller 2 receives electrical signals output by two temperature detectors 104 at the same time during a single uniformity detection, it means that the plastic particles have been fully mixed and uniform. At this time, the controller 2 will control the stirring work to end and remind the personnel through its own voice module (wherein, since it takes a certain time for the temperature detector 104 to heat up, and the controller 2 needs to receive electrical signals output by two temperature detectors 104 at the same time before controlling the stirring work to end, it can avoid the occasional phenomenon that the plastic particles passing through the discharge hole 47 are sufficiently uniform, but the plastic particles are not mixed uniformly as a whole, causing the controller 2 to erroneously trigger the stopping of the stirring work);

[0045] The duration of a single uniformity detection operation is 3 minutes, that is, the hot air blower 72 operates at a high power state for 3 minutes. Within 3 minutes, the controller 2 does not simultaneously receive the electrical signals output by the two temperature detectors 104, which means that the plastic particles have not been fully mixed. After the uniformity detection operation is completed, the controller 2 controls the hot air blower 72 to continue to operate at a low power state and continue the stirring operation, and controls the light board 81, the photosensitive resistor 82, etc. to stop working until the next uniformity detection operation is started;

[0046] When the controller 2 does not start the uniformity detection work (that is, when the hot air blower 72 is running at low power), the controller 2 will control the infrared spotlight 11 to work, and the infrared spotlight 11 will emit infrared rays to the infrared detector 12. If the plastic particles absorb a lot of moisture and dust, the water vapor and dust passing through the air outlet 9 will also increase synchronously, and the water vapor and dust will refract the infrared rays, thereby causing the infrared intensity irradiated to the infrared detector 12 to become lower. After the infrared detector 12 detects that the infrared intensity is lower than the threshold, it will output an electrical signal to the controller 2. At this time, the controller 2 will control the normally open solenoid valve 103 and the second normally closed solenoid valve 14 to start, so the airflow discharged through the air outlet 9 at this time will The gas is discharged through the second branch pipe 13, so the gas flow will pass through the detection end of the gas flow meter 15, and the gas flow meter 15 can measure the gas flow passing through. When the stirring work is completed, the staff checks the flow value of the gas flow meter 15 through the controller 2 to know the amount of water vapor and dust adsorbed by the plastic particles (the larger the flow value, the larger the amount of water vapor and dust). When the amount of water vapor and dust is too large, the staff should promptly check the storage environment of the plastic particles or the previous process to improve the storage environment of the plastic particles or improve the processing quality of the previous work, reduce the amount of dust and water vapor in the plastic particles that need to be stirred later, thereby helping to improve the preparation quality of subsequent plastic products.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An efficient and uniform plastic granule automatic mixer, comprising a mixing barrel (1) and a controller (2) mounted on the outer side wall of the mixing barrel (1), characterized in that: Also includes: A stirring unit (3) installed inside the stirring barrel (1); Two circulating feeding units (4) are symmetrically arranged on the side wall of the stirring barrel (1), and the feeding ends and the discharging ends of the two circulating feeding units (4) are both connected to the interior of the stirring barrel (1), and the stirring unit (3) and the two circulating feeding units (4) are jointly equipped with a transmission mechanism (5); Two boxes (6) are symmetrically arranged on the outer side wall of the mixing barrel (1), and the two boxes (6) are both connected to the circulating feeding unit (4) on the same side; Two air separation processing units (7) are arranged on the side wall of the box body (6) on the same side, and a starting mechanism (8) is installed inside the two boxes (6); The two air outlet pipes (9) are both fixedly plugged into the top of the box body (6) on the same side, and the pipe walls of the two air outlet pipes (9) are both fixedly connected to a trigger mechanism (10).

2. The efficient and uniform automatic plastic particle mixer according to claim 1, characterized in that: The stirring unit (3) comprises a stirring main shaft (31) rotatably arranged at the bottom of the stirring barrel (1), and a stirring blade (32) is fixedly sleeved on the shaft wall of the stirring main shaft (31), a driving motor (33) is fixedly installed at the bottom of the stirring barrel (1), and the output end of the driving motor (33) is transmission-connected to the stirring main shaft (31), and the driving motor (33) is electrically connected to the controller (2).

3. The efficient and uniform automatic plastic particle mixer according to claim 2, characterized in that: The two circulating feeding units (4) each include a feed barrel (41) and a discharge barrel (42) fixedly plugged into the side wall of the mixing barrel (1), and the feed barrel (41) is located above the discharge barrel (42), the inner walls of the feed barrel (41) and the discharge barrel (42) are both rotatably connected to a feed shaft (43), and the shaft wall of the feed shaft (43) is fixedly sleeved with a spiral feed blade (44), when the spiral feed blades (44) inside the feed barrel (41) and the discharge barrel (42) rotate in the same direction, the plastic particles are moved in the feed barrel (41) and the discharge barrel (42) The moving directions inside are opposite, and the two feeding shafts (43) are connected together by a belt transmission assembly (45). A drop pipe (46) is fixedly inserted at one end of the lower wall of the feed barrel (41) away from the mixing barrel (1), and the drop pipe (46) is connected to the box body (6). Two discharge holes (47) are provided at the bottom of the box body (6), and a receiving hopper (48) connected to the two discharge holes (47) is fixedly installed at the bottom of the box body (6), and the receiving hopper (48) is connected to the discharge barrel (42).

4. The efficient and uniform automatic plastic particle mixer according to claim 3, characterized in that: The transmission mechanism (5) comprises an isolation cover (51) fixedly mounted on the inner bottom of the mixing barrel (1), and the mixing main shaft (31) is rotatably connected to the top of the isolation cover (51), and the feeding shafts (43) in the two discharge barrels (42) are both rotatably connected to the side walls of the isolation cover (51), and the mixing main shaft (31) and the two feeding shafts (43) on the same side are transmission-connected via a bevel gear assembly (52).

5. The efficient and uniform automatic plastic particle mixer according to claim 1, characterized in that: The two air separation processing units (7) each comprise a mounting cover (71) fixedly mounted on the side wall of the housing (6) away from the mixing barrel (1); a hot air blower (72) is fixedly mounted inside the mounting cover (71), and an air inlet end of the hot air blower (72) passes through the side wall of the mounting cover (71); a plurality of blowing holes (73) are provided on the side wall of the housing (6) at a position inside the mounting cover (71); and the hot air blower (72) is electrically connected to the controller (2).

6. The efficient and uniform automatic plastic particle mixer according to claim 3, characterized in that: The starting mechanism (8) comprises a lamp board (81) fixedly mounted on one side of the two discharge holes (47), and a photosensitive resistor (82) is fixedly mounted on the hole wall of the discharge hole (47) on the side opposite to the lamp board (81) on the same side. Two normally closed electromagnetic switches (83), two normally open electromagnetic switches (84) and two electric regulating resistors (85) are fixedly mounted on the inner wall of the box body (6), and each of the photosensitive resistors (82) is connected in series with the corresponding normally closed electromagnetic switch (83), normally open electromagnetic switch (84) and electric regulating resistor (85) through the controller (2).

7. The efficient and uniform automatic plastic particle mixer according to claim 6, characterized in that: The trigger mechanism (10) comprises a first shunt pipe (101) fixedly plugged into the wall of the air outlet pipe (9); a first normally closed solenoid valve (102) is installed inside the first shunt pipe (101); a normally open solenoid valve (103) is installed inside the air outlet pipe (9) at a position above the first shunt pipe (101); a temperature detector (104) is fixedly plugged into the wall of the first shunt pipe (101) at a position close to the air outlet end; a detection end of the temperature detector (104) is arranged inside the first shunt pipe (101); and the controller (2) controls the operation of the first normally closed solenoid valve (102) and the normally open solenoid valve (103) according to electrical signals output by the normally closed solenoid switch (83) and the normally open solenoid switch (84).

8. The efficient and uniform automatic plastic granule mixer according to claim 7, characterized in that: An infrared lamp (11) is fixedly mounted on the inner wall of the air outlet pipe (9), and an infrared detector (12) is fixedly mounted on the inner wall of the air outlet pipe (9) on the side opposite to the infrared lamp (11). A second shunt pipe (13) is fixedly plugged into the pipe wall of the air outlet pipe (9), and a second normally closed solenoid valve (14) is installed inside the second shunt pipe (13). A gas flow meter (15) is fixedly plugged into the pipe wall of the second shunt pipe (13). The controller (2) controls the operation of the second normally closed solenoid valve (14) and the normally open solenoid valve (103) according to the electrical signal output by the infrared detector (12). Both the gas flow meter (15) and the infrared lamp (11) are electrically connected to the controller (2).

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