Plastic particle separator

Abstract

The separator comprises a feeding pipe, a separation box, a discharging pipe, a blast pipe, a dust removal pipe, a screening mechanism, an electrostatic mechanism and a window, the separation box is fixedly connected with the feeding pipe, the discharging pipe, the blast pipe, the dust removal pipe and the window, the screening mechanism comprises a side hole plate and a partition assembly, the side hole plate is fixedly connected with the separation box, and the partition assembly is fixedly connected with the separation box. The separation assembly is fixedly connected with the separation box, the electrostatic mechanism comprises a box body, and the box body is fixedly connected with the separation box and the separation assembly; the invention relates to the technical field of crushed plastic material screening equipment, particles with different particle sizes can be completely screened, after plastic particles are screened through reverse blowing, the particles with different sizes containing static electricity are thoroughly separated from dust, and the screening efficiency of the crushed plastic particles is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic crushing material screening equipment, in particular to a plastic particle separator. Background Art

[0002] The existing crushed materials are separated. After crushing, they are separated by cyclone separators and vibrating screens. Since the crushed materials are transported at high speed through metal pipes, the crushed material particles carry static electricity. The original design, including cyclone separators and vibrating screens, cannot completely and effectively screen out small particles of powder. Excessive crushed material powder directly causes the recycled material to be reused in the workshop production line, resulting in quality problems in the molding materials.

[0003] In the separation process, because the plastic film particles are of different sizes and have static electricity during the crushing process, the plastic particles without static electricity cannot be screened by the electrostatic screening machine. The electrostatic screening technology of plastic particles is widely used in the fields of plastic recycling, plastic processing and plastic manufacturing. It can help enterprises improve the purity and utilization rate of plastic particles, reduce production costs and improve product quality. Summary of the invention

[0004] The object of the present invention is to provide a plastic particle separator to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: the plastic particle separator includes a feed pipe, a separation box, a discharge pipe, an air blast pipe, a dust removal pipe, a screening mechanism, an electrostatic mechanism and a window; the separation box is fixedly connected to the feed pipe, the discharge pipe, the air blast pipe, the dust removal pipe and the window; the screening mechanism includes a side hole plate and a partition assembly; the side hole plate is fixedly connected to the separation box; the partition assembly is fixedly connected to the separation box; the electrostatic mechanism includes a box body; the box body is fixedly connected to the separation box and the partition assembly.

[0006] The present invention discloses a sorting device for separating small-particle powder in crushed plastic. The crushed material is introduced into a separation box through a feed pipe, and an air blower is ventilated to the bottom of the separation box through a side hole plate and a partition assembly. The small-particle powder is lifted up by backblowing the falling material, and the large-particle crushed material falls directly into a screening mechanism by gravity and is discharged through a discharge pipe. When the material is backblown, a part of the large-particle crushed material mixed with the small-particle crushed material is lifted up and falls into the box body, and the large-particle crushed material and the small-particle crushed material are separated again through an electrostatic mechanism, and the large-particle crushed material flows back to the screening mechanism through the partition assembly and is discharged through the discharge pipe, and the small-particle crushed material is sucked away by an external fan through a dust removal pipe, thereby completing the complete removal of small-particle powder in the plastic crushed material.

[0007] Furthermore, the screening mechanism also includes an air balancing plate and a slope baffle, and the partition assembly includes a back plate. The air balancing plate and the slope baffle are fixedly connected to the back plate. The air balancing plate, the slope baffle, the back plate and the separation box form a flow channel. The back plate is provided with a main air inlet, a side air inlet and a dust return inlet. The main air inlet is adjacent to the air balancing plate, and the side air inlet is located below the slope baffle. The back plate is fixedly connected to the box body.

[0008] The plastic crushed materials fall into the flow channel composed of the air distribution plate, the slope baffle, the back plate and the separation box from the feed pipe. The blower pipe ventilates the separation box through the side hole plate, the side window, the main air outlet and the side air outlet. The airflow passes through the air distribution plate through the main air outlet, and passes through the slope baffle through the side air outlet to back-blow the crushed materials falling in the flow channel, so that the small particles of dust are raised, and the large particles of crushed materials are directly discharged from the discharge pipe.

[0009] Furthermore, the partition assembly also includes a horizontal plate, which is fixedly connected to the back plate, which is fixedly connected to the separation box, and which is fixedly connected to the box body. The back plate, the horizontal plate and the bottom of the separation box form an air intake cabin, and the back plate, the horizontal plate and the top of the separation box form an exhaust cabin. The horizontal plate is located above the side hole plate, and the horizontal plate is located above the main air outlet. A dust return port is also provided on the back plate, and a return flow port is provided on the box body. The dust return port is fixedly connected to the return flow port.

[0010] The horizontal plate separates the back plate from the separation box. The air intake cabin is located below the horizontal plate, and the exhaust cabin is located above the horizontal plate. The air blower pipe blows air into the separation box through the air intake cabin, the side hole plate, the side window, the main air outlet, and the side air outlet, so that the small particles of dust mixed with the large particles of dust are blown back and lifted up. The mixed particles of dust are sucked by the box body in the exhaust cabin, and the large particles and small particles are separated again by the electrostatic mechanism. The large particles return to the flow channel through the reflux port and are discharged from the discharge pipe, and the small particles are sucked away by the external fan through the dust removal pipe.

[0011] Furthermore, the electrostatic mechanism also includes an electrostatic generator, an isolation plate, a side plate, a grille, a guide mechanism and a twisting mechanism. The electrostatic generator, the isolation plate and the side plate are all fixedly connected to the box body. The box body is also provided with a dust suction port. The grille is fixedly connected to the return port. The isolation plate, the side plate and the side of the box body close to the return port form a large particle chamber. The isolation plate, the side plate and the side of the box body close to the dust suction port form a small particle chamber. The guide mechanism includes an upper frame and a first pulley. The twisting mechanism includes a lower frame and a second pulley. The upper frame and the lower frame are all fixedly connected to the box body. The first pulley and the second pulley are connected by a belt drive.

[0012] The external fan draws the gas in the electrostatic mechanism out through the dust suction port, so that the box generates suction force on the raised crushed material dust. The raised dust falls into the guide mechanism through the lower frame and is combed into lines hanging down along the axis of the lower frame. The line-shaped dust falls into the twisting mechanism through the lower frame. The twisting mechanism rubs the particle dust, so that the charge on the surface of the plastic particles is transferred, and the plastic particles carry static electricity and fall to the side of the electrostatic generator. The electrostatic generator generates a high-voltage electrostatic field, and the electric field force exerts force on the falling static electricity. Electrostatic plastic produces a horizontal effect. Through the analysis of the gravity of the falling particles and the force of the horizontal electric field, large and small particles of plastic are thrown away from the return port in the electric field. In the electrostatic field, small particles are more strongly affected by the electric field and are subjected to a greater horizontal force from the electric field. The small particles of crushed material fall over the isolation plate and fall into the small particle chamber, where they are sucked out through the dust suction port by an external fan. The large particles of crushed material cannot fall over the isolation plate, so they fall into the large particle chamber and return to the flow channel through the grille and the return port.

[0013] Furthermore, the guide mechanism also includes a servo motor, a gear set and a guide roller. The servo motor and the gear set are fixedly connected to the upper frame, the first pulley is fixedly connected to the output end of the servo motor, the gear set is transmission-connected to the output end of the servo motor and the guide roller, and the guide roller is rotationally connected to the upper frame.

[0014] There are two groups of guide rollers. The raised dust falls on the guide rollers through the lower frame. The servo motor outputs a fixed-axis torque to the gear group, which is transmitted to the two groups of guide rollers through the gear group. The two groups of guide rollers rotate towards each other. The dust particles that fall on the guide rollers fall from the gap between the two groups of guide rollers as the guide rollers rotate relative to each other. The dust particles fall in lines. The servo motor outputs a fixed-axis torque to drive the first pulley to rotate.

[0015] Furthermore, the twisting mechanism also includes a first gear rod, a second gear rod, a double-headed connecting rod, a reciprocating mechanism and a cradle, the second pulley is fixedly connected to the first gear rod, the first gear rod and the second gear rod are both rotatably connected to the lower frame, the first gear rod is meshed with the second gear rod tooth surfaces, the second gear rod is fixedly connected to the double-headed connecting rod, the double-headed connecting rod is rotatably connected to the cradle, a sliding hole is provided on the lower frame, the reciprocating mechanism includes an outer frame and a sliding rod, the outer frame is fixedly connected to the lower frame, the sliding rod is slidably connected to the sliding hole, and the sliding rod is hinged to the cradle at one end away from the double-headed connecting rod.

[0016] The servo motor outputs a fixed-axis torque to the first pulley, which is transmitted to the first gear rod through the belt transmission between the first pulley and the second pulley, and the first gear rod is meshed with the second gear rod tooth surface. The second gear rod is fixedly equipped with a double-headed connecting rod, and the fixed-axis torque of the servo motor is transmitted to the double-headed connecting rod, and the double-headed connecting rod rotates with the axis of the second gear rod as the center of a circle, and both ends of the double-headed connecting rod are rotationally connected to two groups of cradles respectively, and the two groups of cradles are hinged to two groups of sliding rods respectively. The double-headed connecting rod rotates, driving the two groups of sliding rods to slide back and forth in the sliding holes, and the two groups of sliding rods drive the two groups of reciprocating mechanisms to slide back and forth at the same time.

[0017] Furthermore, the reciprocating mechanism also includes a rack, a spring and a sliding mechanism. The rack is fixedly connected to the outer frame. The sliding mechanism includes an outer shell and a gear column. The outer shell is provided with a sliding mouth. The spring is fixedly connected to the outer frame and the outer shell. The outer shell is slidably connected to the outer frame. The rack is slidably connected to the sliding mouth, and the rack engages with the tooth surface of the gear column.

[0018] The slide bar drives the slide bar mechanism to slide back and forth along the outer frame, the slide bar mechanism squeezes the spring, and the slide bar mechanism moves back and forth relative to the rack. Through the meshing of the rack and the tooth surface of the gear column, the relative sliding of the rack is converted into the reciprocating rotation of the gear column.

[0019] Furthermore, the slide mechanism also includes a flower wheel and side soft leather. The gear column is rotatably connected to the outer shell, the gear column is fixedly connected to the flower wheel, and the gear column and the flower wheel are provided with several groups. The several groups of gear columns and flower wheels are linearly evenly distributed along the outer shell. The side soft leather is fixedly connected to the outer frame, and the flower wheel is in contact with the side soft leather.

[0020] Several groups of gear columns evenly distributed along the outer shell are meshed with the tooth surface of the rack. When the rack slides back and forth along the sliding mouth, the gear column drives the flower wheel to rotate back and forth. Several groups of flower wheel edges evenly distributed along the outer shell contact the side soft leather. Several groups of flower wheels support the side soft leather when they rotate back and forth. By arranging two groups of relative reciprocating mechanisms, when the two groups of relative reciprocating mechanisms move back and forth at the same time, the two groups of relatively arranged side soft leathers contact and rub back and forth at the same time, and present wave undulations, bionic simulation of the action of rubbing with fingertips, and particle dust falls between the two groups of side soft leathers. Plastic particles are rubbed by the two groups of side soft leathers. Leather and plastic are two different materials with differences in physical and chemical properties. When the two materials rub against each other, charge transfer occurs, so that the particle dust is evenly attached with static electricity when falling.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention designs a screening mechanism, and the blast pipe blows air into the separation box, so that small particles are backblown and lifted up for discharge, and most of the large particle crushed materials are directly discharged from the discharge pipe, which can effectively screen the plastic particles containing static electricity into large and small particle sizes; the present invention designs an electrostatic mechanism, and when backblowing the material, a part of the large particle crushed materials are mixed with the small particle crushed materials and lifted up, and the particles are sucked in by suction generated by an external fan, and the dust is combed into lines and hangs down, and the particle dust is rubbed by simulated twisting, so that the plastic particles carry static electricity and fall to the side of the electrostatic generator, and the electrostatic generator generates a high-voltage electrostatic field, and the electric field force exerts a horizontal effect on the falling electrostatic plastic. In the electrostatic field, small particles are more strongly affected by the electric field and are subjected to a greater horizontal force from the electric field, and the large and small particle crushed materials are separated by the falling trajectory landing point, and the large particle crushed materials fall into the large particle chamber and are screened through the grille The granules fall between the two groups of side soft leathers, and the plastic particles are rubbed by the two groups of side soft leathers. When the two materials rub against each other, charge transfer occurs, so that the granules are evenly attached with static electricity when falling. The present invention can completely screen the large and small sized particles, and after the plastic particles that may not contain static electricity are screened by back-blowing, secondary electrostatic screening is performed, and static electricity is actively added to the particles to completely separate the large and small particles, thereby greatly improving the screening efficiency of the broken plastic particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the screening mechanism structure of the present invention; Figure 3 It is a schematic diagram of the structure of the partition assembly of the present invention; Figure 4 It is a schematic diagram of the electrostatic mechanism structure of the present invention; Figure 5 It is a schematic diagram of the structure of the flow guiding mechanism of the present invention; Figure 6 It is a schematic structural diagram of the twisting mechanism of the present invention; Figure 7 for Figure 6 A local enlarged schematic diagram of area A; Figure 8 It is a schematic diagram of the structure of the slide mechanism of the present invention.

[0023] In the figure: 1, feed pipe; 2, separation box; 3, discharge pipe; 4, blast pipe; 5, dust removal pipe; 6, screening mechanism; 61, side hole plate; 62, partition assembly; 621, back plate; 6211, main air outlet; 6212, side air outlet; 6213, dust return port; 622, cross plate; 623, air intake cabin; 624, exhaust cabin; 63, wind balance plate; 64, slope baffle; 65, flow channel; 7, electrostatic mechanism; 71, box; 711, return port; 712, dust suction port; 72, electrostatic generator; 73, isolation plate; 74, side plate; 75, grille; 76, flow guide mechanism; 761, upper frame; 762, servo motor machine; 763, first pulley; 764, gear set; 765, guide roller; 77, twisting mechanism; 771, lower frame; 7711, sliding hole; 772, second pulley; 773, first gear rod; 774, second gear rod; 775, double-headed connecting rod; 776, reciprocating mechanism; 7761, outer frame; 7762, rack; 7763, spring; 7764, slide bar; 7765, slide bar mechanism; 7766, outer shell; 77661, slide; 7767, gear column; 7768, flower wheel; 7769, side soft leather; 777, rocking frame; 78, large particle chamber; 79, small particle chamber; 8, window. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] like Figure 1 , Figure 2 As shown, the technical solution of the plastic particle separator provided by the present invention includes a feed pipe 1, a separation box 2, a discharge pipe 3, an air blast pipe 4, a dust removal pipe 5, a screening mechanism 6, an electrostatic mechanism 7 and a window 8, the separation box 2 is fixedly connected to the feed pipe 1, the discharge pipe 3, the air blast pipe 4, the dust removal pipe 5 and the window 8, the screening mechanism 6 includes a side hole plate 61 and a partition assembly 62, the side hole plate 61 is fixedly connected to the separation box 2, the partition assembly 62 is fixedly connected to the separation box 2, the electrostatic mechanism 7 includes a box body 71, and the box body 71 is fixedly connected to the separation box 2 and the partition assembly 62.

[0026] The present invention is a sorting device for separating small-particle powder from crushed plastic. The crushed material is introduced into the separation box 2 through the feed pipe 1, and the blower pipe 4 is ventilated to the bottom of the separation box 2 through the side hole plate 61 and the partition component 62. The small-particle powder is lifted up by backblowing the falling material, and the large-particle crushed material directly falls into the screening mechanism 6 and is discharged from the discharge pipe 3. When the material is backblown, a part of the large-particle crushed material mixed with the small-particle crushed material is lifted up and falls into the box body 71. The large-particle crushed material and the small-particle crushed material are separated again by the electrostatic mechanism 7, and the large-particle crushed material flows back to the screening mechanism 6 through the partition component 62 and is discharged from the discharge pipe 3. The small-particle crushed material is sucked away by the external fan through the dust removal pipe 5, thereby completing the complete removal of small-particle powder from the plastic crushed material.

[0027] like Figure 2 , Figure 3 , Figure 4 As shown, the screening mechanism 6 also includes an air balancing plate 63 and a slope baffle 64, the partition assembly 62 includes a back plate 621, the air balancing plate 63 and the slope baffle 64 are fixedly connected to the back plate 621, the air balancing plate 63, the slope baffle 64, the back plate 621 and the separation box 2 form a flow channel 65, the back plate 621 is provided with a main air inlet 6211, a side air inlet 6212 and a dust return inlet 6213, the main air inlet 6211 is adjacent to the air balancing plate 63, the side air inlet 6212 is located below the slope baffle 64, and the back plate 621 is fixedly connected to the box body 71.

[0028] The plastic crushed materials fall into the flow channel 65 composed of the air balancing plate 63, the slope baffle 64, the back plate 621 and the separation box 2 from the feed pipe 1. The blower pipe 4 ventilates the separation box 2 through the side hole plate 61, the side window 21, the main air port 6211 and the side air port 6212. The airflow passes through the air balancing plate 63 through the main air port 6211, and passes through the slope baffle 64 through the side air port 6212 to back-blow the crushed materials falling in the flow channel 65, so that small particles of dust are raised, and large particles of crushed materials are directly discharged from the discharge pipe 3.

[0029] like Figure 2 , Figure 3 , Figure 4 As shown, the partition assembly 62 also includes a transverse plate 622, which is fixedly connected to the back plate 621, which is fixedly connected to the separation box 2, and which is fixedly connected to the box body 71. The back plate 621, the transverse plate 622, and the bottom of the separation box 2 form an air intake cabin 623, and the back plate 621, the transverse plate 622, and the top of the separation box 2 form an exhaust cabin 624. The transverse plate 622 is located above the side hole plate 61, and the transverse plate 622 is located above the main air outlet 6211. A dust return port 6213 is also provided on the back plate 621, and a return port 711 is provided on the box body 71. The dust return port 6213 is fixedly connected to the return port 711.

[0030] The transverse plate 622 separates the back plate 621 from the separation box 2. Below the transverse plate 622 is the air intake cabin 623, and above the transverse plate 622 is the exhaust cabin 624. The blower pipe 4 ventilates the separation box 2 through the air intake cabin 623, the side hole plate 61, the side window 21, the main air outlet 6211, and the side air outlet 6212, so that the small particles of dust mixed with the large particles of dust are blown back and lifted up. The mixed particle dust is sucked by the box body 71 located in the exhaust cabin 624, and the large particle crushed materials and the small particle crushed materials are separated again in the electrostatic mechanism 7. The large particle crushed materials return to the flow channel 65 through the reflux port 711 and the dust return port 6213 and are discharged from the discharge pipe 3, and the small particle crushed materials are sucked away by the external fan through the dust removal pipe 5.

[0031] like Figure 5 , Figure 6 , Figure 7 As shown, the electrostatic mechanism 7 also includes an electrostatic generator 72, an isolation plate 73, a side plate 74, a grille 75, a guide mechanism 76 and a twisting mechanism 77. The electrostatic generator 72, the isolation plate 73 and the side plate 74 are all fixedly connected to the box body 71. The box body 71 is also provided with a dust suction port 712. The grille 75 is fixedly connected to the return port 711. The isolation plate 73, the side plate 74 and the side of the box body 71 close to the return port 711 form a large particle chamber 78. The isolation plate 73, the side plate 74 and the side of the box body 71 close to the dust suction port 712 form a small particle chamber 79. The guide mechanism 76 includes an upper frame 761 and a first pulley 763. The twisting mechanism 77 includes a lower frame 771 and a second pulley 772. The upper frame 761 and the lower frame 771 are all fixedly connected to the box body 71. The first pulley 763 and the second pulley 772 are connected by belt transmission.

[0032] The external fan draws out the gas in the electrostatic mechanism 7 through the dust suction port 712, so that the box body 71 generates suction force on the raised crushed material dust, and the raised dust falls into the guide mechanism 76 through the lower frame 771, and is combed into a line shape hanging down along the axial direction of the lower frame 771. The line-shaped dust falls into the twisting mechanism 77 through the lower frame 771, and the particle dust is rubbed by the twisting mechanism 77, so that the charge on the surface of the plastic particles is transferred, so that the plastic particles carry static electricity and fall to the side of the electrostatic generator 72, and the electrostatic generator generates a high-voltage electrostatic field, and the electric field force acts on the falling Electrostatic plastic produces a horizontal effect. Through the gravity of the falling particles and the force analysis of the horizontal electric field, large and small particles of plastic are thrown away from the return port 711 in the electric field. In the electrostatic field, small particles are more strongly affected by the electric field and are subjected to a greater horizontal force from the electric field. The small particles fall over the isolation plate 73 and fall into the small particle chamber 79, where they are sucked out by the external fan through the dust suction port 712. The large particles cannot fall over the isolation plate 73, so they fall into the large particle chamber 78 and return to the flow channel 65 through the grille 75 and the return port 711.

[0033] like Figure 5As shown, the guide mechanism 76 also includes a servo motor 762, a gear set 764 and a guide roller 765. The servo motor 762 and the gear set 764 are fixedly connected to the upper frame 761. The first pulley 763 is fixedly connected to the output end of the servo motor 762. The gear set 764 is transmission-connected to the output end of the servo motor 762 and the guide roller 765. The guide roller 765 is rotationally connected to the upper frame 761.

[0034] There are two groups of guide rollers 765. The raised dust falls on the guide rollers 765 through the lower frame 771. The servo motor 762 outputs a fixed-axis torque to the gear set 764, which is transmitted to the two groups of guide rollers 765 through the gear set 764. The two groups of guide rollers 765 rotate towards each other. The dust particles falling on the guide rollers 765 fall from the gap between the two groups of guide rollers 765 as the guide rollers 765 rotate relative to each other. The dust particles fall in lines. The servo motor 762 outputs a fixed-axis torque to drive the first pulley 763 to rotate.

[0035] like Figure 6 , Figure 7 As shown, the twisting mechanism 77 also includes a first gear rod 773, a second gear rod 774, a double-headed connecting rod 775, a reciprocating mechanism 776 and a cradle 777, the second pulley 772 is fixedly connected to the first gear rod 773, the first gear rod 773 and the second gear rod 774 are both rotatably connected to the lower frame 771, the first gear rod 773 is meshed with the second gear rod 774 tooth surfaces, the second gear rod 774 is fixedly connected to the double-headed connecting rod 775, the double-headed connecting rod 775 is rotatably connected to the cradle 777, a sliding hole 7711 is provided on the lower frame 771, the reciprocating mechanism 776 includes an outer frame 7761 and a sliding rod 7764, the outer frame 7761 is fixedly connected to the lower frame 771, the sliding rod 7764 is slidably connected to the sliding hole 7711, and the sliding rod 7764 is hinged to the cradle 777 at one end away from the double-headed connecting rod 775.

[0036] The servo motor 762 outputs a fixed-axis torque to the first pulley 763, which is transmitted to the first gear rod 773 through the belt transmission between the first pulley 763 and the second pulley 772. The first gear rod 773 meshes with the tooth surface of the second gear rod 774, and the second gear rod 774 is fixedly assembled with a double-headed connecting rod 775. The fixed-axis torque of the servo motor 762 is transmitted to the double-headed connecting rod 775, and the double-headed connecting rod 775 rotates with the axis of the second gear rod 774 as the center of the circle. The two ends of the double-headed connecting rod 775 are respectively connected to the two groups of cradles 777 for rotation, and the two groups of cradles 777 are respectively hinged to the two groups of sliding rods 7764. The double-headed connecting rod 775 rotates, driving the two groups of sliding rods 7764 to slide back and forth in the sliding hole 7711, and the two groups of sliding rods 7764 drive the two groups of reciprocating mechanisms 776 to slide back and forth at the same time.

[0037] like Figure 6 , Figure 7 , Figure 8 As shown, the reciprocating mechanism 776 also includes a rack 7762, a spring 7763 and a slide mechanism 7765. The rack 7762 is fixedly connected to the outer frame 7761. The slide mechanism 7765 includes a shell 7766 and a gear column 7767. The shell 7766 is provided with a slide 77661. The spring 7763 is fixedly connected to the outer frame 7761 and the shell 7766. The shell 7766 is slidably connected to the outer frame 7761. The rack 7762 is slidably connected to the slide 77661. The rack 7762 is meshed with the tooth surface of the gear column 7767.

[0038] The slide bar 7764 drives the slide bar mechanism 7765 to slide back and forth along the outer frame 7761. The slide bar mechanism 7765 squeezes the spring 7763. At the same time, the slide bar mechanism 7765 moves back and forth relative to the rack 7762. Through the engagement of the tooth surface of the rack 7762 and the gear column 7767, the relative sliding of the rack 7762 is converted into the reciprocating rotation of the gear column 7767.

[0039] like Figure 8 As shown, the slide mechanism 7765 also includes a flower wheel 7768 and a side soft leather 7769, the gear column 7767 is rotatably connected to the outer shell 7766, the gear column 7767 is fixedly connected to the flower wheel 7768, the gear column 7767 and the flower wheel 7768 are each provided with a plurality of groups, and the plurality of groups of gear columns 7767 and flower wheels 7768 are linearly evenly distributed along the outer shell 7766, the side soft leather 7769 is fixedly connected to the outer frame 7761, and the flower wheel 7768 is in contact with the side soft leather 7769.

[0040] A plurality of groups of gear columns 7767 linearly evenly distributed along the housing 7766 are all meshed with the tooth surface of the rack 7762. When the rack 7762 slides back and forth along the sliding opening 77661, the gear columns 7767 drive the flower wheel 7768 to reciprocate. The edges of the plurality of groups of flower wheels 7768 linearly evenly distributed along the housing 7766 contact the side soft leather 7769. When the plurality of groups of flower wheels 7768 reciprocate, they support the side soft leather 7769. By arranging two groups of relative reciprocating mechanisms 776, the two groups of relative When the reciprocating mechanism 776 moves back and forth at the same time, the two sets of relatively arranged side soft leathers 7769 contact and rub back and forth while undulating in waves, bionic simulation of the action of rubbing with fingertips, and the particle dust falls between the two sets of side soft leathers 7769. The plastic particles are rubbed by the two sets of side soft leathers 7769. Leather and plastic are two different materials with differences in physical and chemical properties. When the two materials rub against each other, charge transfer occurs, so that the particle dust is evenly attached with static electricity when falling.

[0041] The working principle of the present invention is as follows: the crushed material is introduced into the flow channel 65 through the feed pipe 1, and the blower pipe 4 is ventilated into the separation box 2 to back-blow the falling material, so that the small particles are lifted up, and the large particles of crushed material are directly discharged from the discharge pipe 3. When the material is back-blown, a part of the large particles of crushed material mixed with the small particles of crushed material are lifted up, and the external fan exhausts air to generate suction for the lifted crushed material dust, and the lifted dust falls on the guide roller 765, and the servo motor 762 outputs torque to the gear group 764, which is transmitted through the gear group 764. The torque is transferred to the two groups of guide rollers 765, and the gap between the two groups of guide rollers 765 falls in a linear shape, and is transmitted to the double-headed connecting rod 775 through the belt transmission between the first pulley 763 and the second pulley 772, driving the two groups of sliding rods 7764 to slide back and forth. When the rack 7762 slides back and forth along the sliding mouth 77661, the gear column 7767 drives the flower wheel 7768 to rotate back and forth, and the edge of the flower wheel 7768 contacts the side soft leather 7769, and the two groups of side soft leathers 7769 arranged opposite to each other contact and rub back and forth at the same time. The plastic particles are rubbed by the two sets of side soft leathers 7769 to make the dust particles evenly attached with static electricity when falling. The plastic particles carry static electricity and fall to the side of the electrostatic generator 72. The electrostatic generator generates a high-voltage electrostatic field. The electric field force exerts a horizontal effect on the falling electrostatic plastic. Through the analysis of the gravity of the falling particles and the force of the horizontal electric field, the large and small plastic particles move away from the return port 711 in the electric field. In the electrostatic field, small particles are more strongly affected by the electric field and are subjected to a greater horizontal force. The small-particle crushed material falls over the isolation plate 73 and falls into the small-particle chamber 79, where it is sucked out by an external fan through the dust suction port 712. The large-particle crushed material cannot fall over the isolation plate 73, and falls into the large-particle chamber 78, and returns to the flow channel 65 through the grille 75 and the reflux port 711. The small-particle crushed material is sucked away by the external fan through the dust removal pipe 5, thereby completing the complete removal of small-particle powder in the plastic crushed material.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. Plastic particle separator, characterized in that: The separator comprises a feed pipe (1), a separation box (2), a discharge pipe (3), an air blast pipe (4), a dust removal pipe (5), a screening mechanism (6), an electrostatic mechanism (7) and a viewing window (8); the separation box (2) is fixedly connected to the feed pipe (1), the discharge pipe (3), the air blast pipe (4), the dust removal pipe (5) and the viewing window (8); the screening mechanism (6) comprises a side hole plate (61) and a partition assembly (62); the side hole plate (61) is fixedly connected to the separation box (2); the partition assembly (62) is fixedly connected to the separation box (2); the electrostatic mechanism (7) comprises a box body (71); the box body (71) is fixedly connected to the separation box (2) and the partition assembly (62).

2. The plastic particle separator according to claim 1, characterized in that: The screening mechanism (6) further comprises an air distribution plate (63) and a slope baffle (64); the partition assembly (62) comprises a back plate (621); the air distribution plate (63) and the slope baffle (64) are both fixedly connected to the back plate (621); the air distribution plate (63), the slope baffle (64), the back plate (621) and the separation box (2) form a flow channel (65); a main air port (6211) and a side air port (6212) are provided on the back plate (621); the main air port (6211) is adjacent to the air distribution plate (63); the side air port (6212) is located below the slope baffle (64); and the back plate (621) is fixedly connected to the box body (71).

3. The plastic particle separator according to claim 2, characterized in that: The partition assembly (62) further comprises a transverse plate (622), wherein the transverse plate (622) is fixedly connected to the back plate (621), the back plate (621) is fixedly connected to the separation box (2), the transverse plate (622) is fixedly connected to the box body (71), the back plate (621), the transverse plate (622) and the bottom of the separation box (2) form an air intake cabin (623), and the back plate (621), the transverse plate (622) and the top of the separation box (2) form an exhaust cabin (624), the transverse plate (622) is located above the side hole plate (61), the transverse plate (622) is located above the main air outlet (6211), the back plate (621) is further provided with a dust return port (6213), the box body (71) is provided with a return port (711), and the dust return port (6213) is fixedly connected to the return port (711).

4. The plastic particle separator according to claim 3, characterized in that: The electrostatic mechanism (7) further comprises an electrostatic generator (72), an isolation plate (73), a side plate (74), a grille (75), a flow guide mechanism (76) and a twisting mechanism (77); the electrostatic generator (72), the isolation plate (73) and the side plate (74) are all fixedly connected to the box body (71); a dust suction port (712) is also provided on the box body (71); the grille (75) is fixedly connected to the return port (711); the isolation plate (73), the side plate (74) and the box body (71) are connected to a side close to the return port (711); The large particle chamber (78) comprises a small particle chamber (79) formed by the isolation plate (73), the side plate (74) and the side of the housing (71) close to the dust suction port (712); the flow guide mechanism (76) comprises an upper frame (761) and a first belt pulley (763); the twisting mechanism (77) comprises a lower frame (771) and a second belt pulley (772); the upper frame (761) and the lower frame (771) are both fixedly connected to the housing (71); and the first belt pulley (763) and the second belt pulley (772) are connected via a belt transmission.

5. The plastic particle separator according to claim 4, characterized in that: The flow guide mechanism (76) further comprises a servo motor (762), a gear set (764) and a flow guide roller (765); the servo motor (762) and the gear set (764) are both fixedly connected to the upper frame (761); the first pulley (763) is fixedly connected to the output end of the servo motor (762); the gear set (764) is transmission-connected to the output end of the servo motor (762) and the flow guide roller (765); and the flow guide roller (765) is rotationally connected to the upper frame (761).

6. The plastic particle separator according to claim 4, characterized in that: The twisting mechanism (77) further comprises a first gear rod (773), a second gear rod (774), a double-head connecting rod (775), a reciprocating mechanism (776) and a cradle (777); the second belt pulley (772) is fixedly connected to the first gear rod (773); the first gear rod (773) and the second gear rod (774) are both rotatably connected to the lower frame (771); the first gear rod (773) and the second gear rod (774) are meshed with each other in tooth surfaces; the second gear rod (774) and the double-head connecting rod are meshed with each other in tooth surfaces; The rod (775) is fixedly connected, the double-headed connecting rod (775) is rotatably connected to the cradle (777), the lower frame (771) is provided with a sliding hole (7711), the reciprocating mechanism (776) comprises an outer frame (7761) and a sliding rod (7764), the outer frame (7761) is fixedly connected to the lower frame (771), the sliding rod (7764) is slidably connected to the sliding hole (7711), and the sliding rod (7764) is hinged to one end of the cradle (777) away from the double-headed connecting rod (775).

7. The plastic particle separator according to claim 6, characterized in that: The reciprocating mechanism (776) further comprises a rack (7762), a spring (7763) and a slide mechanism (7765); the rack (7762) is fixedly connected to the outer frame (7761); the slide mechanism (7765) comprises an outer shell (7766) and a gear column (7767); a sliding opening (77661) is provided on the outer shell (7766); the spring (7763) is fixedly connected to the outer frame (7761) and the outer shell (7766); the outer shell (7766) is slidably connected to the outer frame (7761); the rack (7762) is slidably connected to the sliding opening (77661); and the rack (7762) is meshed with the tooth surface of the gear column (7767).

8. The plastic particle separator according to claim 7, characterized in that: The slide mechanism (7765) further comprises a flower wheel (7768) and a side soft leather (7769); the gear column (7767) is rotatably connected to the outer shell (7766); the gear column (7767) is fixedly connected to the flower wheel (7768); the gear column (7767) and the flower wheel (7768) are each provided with a plurality of groups; the plurality of groups of the gear columns (7767) and the flower wheels (7768) are linearly evenly distributed along the outer shell (7766); the side soft leather (7769) is fixedly connected to the outer frame (7761); and the flower wheel (7768) is in contact with the side soft leather (7769).

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