Screening type plastic recycling machine

Abstract

The invention relates to the technical field of plastics, and provides a powder screening type plastic recycling machine which is characterized in that a cooling and grinding device is arranged in a box body and is connected with the box body. And the powder screening device is arranged in the box body, is arranged below the cooling and grinding device and is connected with the cooling and grinding device. And the cleaning device is arranged below the cooling and grinding device, is arranged in the powder screening device and is connected with the powder screening device. When working starts, a worker puts plastic into the cooling and grinding device, then the worker opens the cooling and grinding device, the cooling and grinding device conducts primary smashing on the plastic, then the primarily-smashed plastic is ground into powder, and then plastic powder enters the powder screening device; and the cooling and grinding device drives the powder screening device to screen the plastic powder, and meanwhile, the powder screening device drives the cleaning device to clean the interior of the powder screening device, so that the powder screening device is prevented from being blocked.

Description

Technical Field

[0001] The invention relates to the technical field of plastics, in particular to a powder screening type plastic recycling machine. Background Art

[0002] With the improvement of global environmental awareness and the strengthening of environmental protection policies, the demand for plastic recycling and reuse continues to increase. As a key equipment in the plastic recycling process, the powder screening plastic recycling machine has the advantages of high crushing efficiency, low energy consumption, and easy operation, which meets the market demand for waste plastic processing. In addition, the application of the powder screening plastic recycling machine also has important environmental significance. By recycling and utilizing waste plastics, resource waste and environmental pollution can be reduced, and resource recycling and sustainable development can be promoted. This has a positive effect on improving resource utilization efficiency, reducing production costs, improving corporate economic benefits, and promoting social sustainable development. The powder screening plastic recycling machine feeds the plastic powder to be recycled into the main body through the feed port, and the screen in the main body will screen and filter the plastic powder to remove impurities.

[0003] Since waste plastics often contain impurities and fine particles such as fibers, these particles easily accumulate at the sieve holes, causing sieve hole blockage, affecting the screening efficiency and the normal operation of the recycling machine. Therefore, solving the sieve hole blockage problem is the key to improving the performance of the powder-screening plastic recycling machine. Summary of the invention

[0004] The invention aims to solve the technical problem of how to solve the sieve hole blockage, and proposes a powder screening type plastic recycling machine. The technical solution of the invention is as follows: A powder screening plastic recycling machine comprises: a box, a cooling and grinding device, a powder screening device, and a cleaning device. The cooling and grinding device is arranged inside the box and connected to the box. The powder screening device is arranged inside the box, arranged below the cooling and grinding device, and connected to the cooling and grinding device. The cleaning device is arranged below the cooling and grinding device, arranged inside the powder screening device, and connected to the powder screening device.

[0005] At the beginning of the work, the staff puts the plastic into the cooling and grinding device, and then the staff turns on the cooling and grinding device. The cooling and grinding device will perform initial crushing on the plastic, and then grind the initially crushed plastic into powder. After that, the plastic powder enters the powder screening device, and the cooling and grinding device drives the powder screening device to screen the plastic powder. At the same time, the powder screening device will drive the cleaning device to clean the inside of the powder screening device to prevent the powder screening device from being blocked.

[0006] Furthermore, the cooling and grinding device includes: a partition, a crushing box, an arc filter plate, a spherical connector, a first connecting rod, a rolling head, a first long strip opening, a first motor, a curved rod, a conveying box, a rotating rod, a spiral blade, a placement plate, a second motor, a feed hopper, a refrigerator, a plurality of nozzles, and a connecting pipe. The partition is horizontally arranged, arranged inside the box body, and the partition is fixedly connected to the box body. The crushing box is arranged below the partition, and the crushing box is fixedly connected to the partition. The arc filter plate is arranged below the crushing box and is fixedly connected to the crushing box. The spherical connector passes through the partition, and the spherical connector is fixedly connected to the partition. The first connecting rod is inclinedly arranged, the first connecting rod passes through the spherical connector, and is arranged inside the crushing box, arranged above the arc filter plate, and the first connecting rod is fixedly connected to the spherical connector. The rolling head is arranged inside the crushing box, arranged below the first connecting rod, and arranged above the arc filter plate, and the rolling head is fixedly connected to the lower end of the first connecting rod. The first long strip opening is arranged at the upper end of the first connecting rod, and arranged above the spherical connector. The axis of the first motor is arranged horizontally, the first motor is arranged above the partition, arranged on the side of the first connecting rod, and the first motor is fixedly connected to the partition. The bent rod is arranged obliquely, the lower end of the bent rod is sleeved on the rotating shaft of the first motor, the upper end of the bent rod passes through the first long strip opening, the lower end of the bent rod is fixedly connected to the rotating shaft of the first motor, and the upper end of the bent rod contacts the first long strip opening. The axis of the conveying box is arranged horizontally, the conveying box passes through the side of the box body, is arranged above the partition, and is arranged on the side of the first motor, the conveying box is fixedly connected to the partition, and the conveying box is connected to the crushing box. The axis of the rotating rod coincides with the axis of the conveying box, the rotating rod passes through the side of the conveying box away from the first motor, the rotating rod is rotatably connected to the conveying box, and its rotating axis is arranged horizontally. The spiral blade is arranged in the conveying box, sleeved on the rotating rod, and fixedly connected to the rotating rod. The placement plate is arranged horizontally, arranged on the side of the conveying box away from the first motor, and the placement plate is fixedly connected to the conveying box. The axis of the second motor shaft coincides with the axis of the rotating rod, the second motor is arranged above the placement plate, the second motor shaft is fixedly connected to the rotating rod, and the second motor is fixedly connected to the placement plate. The feed hopper is arranged above the conveying box and on the side of the box body, and the feed hopper is connected to the conveying box. The refrigerator is arranged above the partition and on the side of the first motor away from the conveying box, and the refrigerator is fixedly connected to the partition. A plurality of nozzles are arranged on the rolling head, and a plurality of nozzles are fixedly connected to the rolling head. The connecting pipe passes through the partition, the upper end of the connecting pipe is connected to the refrigerator, and the lower end of the connecting pipe is connected to the plurality of nozzles.

[0007] At the beginning of the work, the staff puts the plastic into the feed hopper, and the plastic enters the conveying box through the feed hopper, and then turns on the second motor, the first motor and the refrigerator. When the staff turns on the second motor, the second motor rotates to drive the rotating rod to rotate and drive the spiral blade to rotate. The spiral blade rotates to drive the plastic from the conveying box to the crushing box. The spiral blade will perform the initial crushing of the plastic in the process of conveying the plastic, increasing the crushing effect of the plastic. When the staff turns on the first motor, the first motor rotates to drive the crankshaft to rotate, and the crankshaft rotates to drive the first connecting rod to rotate back and forth. The first connecting rod rotates to drive the rolling head to rotate back and forth to crush the plastic. The crushed plastic is initially screened through the arc filter plate and enters the screening box. In the process of crushing the plastic, the refrigerator delivers cooling gas to the crushing box, thereby reducing the temperature of the plastic and increasing the crushing effect.

[0008] Furthermore, the connecting pipe is a stainless steel hose.

[0009] Stainless steel hose has a wide temperature resistance range and good flexibility Furthermore, the rolling head is provided with rolling teeth.

[0010] The crushing teeth can increase the crushing effect on the plastic.

[0011] Furthermore, the powder screening device includes: two second long strip openings, a second connecting rod, two third connecting rods, two sliding blocks, a screening box, an arc-shaped screen plate, a material dividing plate, and two springs. The two second long strip openings are arranged vertically, and are respectively arranged on two sides of the crushing box that are far away from each other. The second connecting rod is arranged horizontally, passes through the two second long strip openings, and is arranged on the side of the first connecting rod. The second connecting rod is rotatably connected to the first connecting rod, and its rotation axis is arranged horizontally, and the second connecting rod contacts the two second long strip openings. The two third connecting rods are arranged vertically, and are respectively arranged on the sides of the two second long strip openings that are far away from each other, and are arranged below the second connecting rod. The upper ends of the two third connecting rods are fixedly connected to the second connecting rod. The two sliding blocks are respectively sleeved on the two third connecting rods, and the two sliding blocks are arranged below the second connecting rod. The two sliding blocks are respectively slidably connected to the two third connecting rods in the vertical direction. The screening box is arranged on the side where the two sliding blocks are close to each other, and is arranged below the crushing box. The two sides of the screening box are respectively fixedly connected to the two sliding blocks. The arc screen plate is arranged below the screening box, and the arc screen plate is fixedly connected to the screening box. The material dividing plate is arranged inside the screening box, and the material dividing plate is arranged above the arc screen plate and below the arc filter plate, and the material dividing plate is fixedly connected to the screening box. Two springs are arranged horizontally, respectively arranged below the two sliding blocks, and respectively arranged on the sides of the screening box close to the two sliding blocks, and the ends of the two springs close to each other are fixedly connected to the two sides of the screening box, and the ends of the two springs far away from each other are fixedly connected to the box body.

[0012] When the first connecting rod rotates, the first connecting rod drives the second connecting rod to rotate, the second connecting rod drives the third connecting rod to rotate, the third connecting rod drives the screening box to move left and right, and the screening box moves left and right to drive the arc screen plate to move left and right, thereby screening the plastic powder.

[0013] Furthermore, the spring is a multi-strand helical spring.

[0014] The multi-strand helical spring has good support and is easy to compress. It can provide vertical support to the screening box and also provide a buffering effect.

[0015] Furthermore, the cleaning device includes: two third long strip openings, a fixed rod, a first threaded rod, a circular gear, a rack, two second threaded rods, a scraper, two brush cylinders, a collection box, and a discharge port. The two third long strip openings are respectively arranged on the two sides of the screening box, arranged below the material dividing plate, and arranged above the arc-shaped screen plate. The fixed rod passes through the two third long strip openings, is arranged below the material dividing plate, and is arranged above the arc-shaped screen plate, and the fixed rod is fixedly connected to the box body. The first threaded rod passes through the side of the screening box, is arranged below the two third long strip openings, and is arranged above the arc-shaped screen plate. The first threaded rod is rotatably connected to the screening box, and its rotation axis is arranged horizontally. The circular gear is sleeved on the first threaded rod, arranged below the fixed rod, and arranged on the side of the screening box close to the box body, and the circular gear is fixedly connected to the first threaded rod. The rack is sleeved on the fixed rod, arranged above the circular gear, and arranged on the side of the screening box close to the box body. The rack is fixedly connected to the fixed rod and meshes with the circular gear. The two second threaded rods are arranged horizontally, arranged in the screening box, arranged below the two third long strip openings, and arranged above the first threaded rod. The two second threaded rods are fixedly connected to the screening box. The scraper is arranged vertically, sleeved on the first threaded rod, sleeved on the two second threaded rods, arranged below the fixed rod, and arranged above the arc-shaped screen plate. The scraper is threadedly connected to the first threaded rod and slidably connected to the two second threaded rods in the horizontal direction. The two brush cylinders are respectively sleeved on the two second threaded rods and arranged on the side of the scraper close to the circular gear. The two brush cylinders are rotatably connected to the scraper, and the rotation axis thereof is parallel to the rotation axis of the first threaded rod. The two brush cylinders are respectively threadedly connected to the two second threaded rods. The collection box is arranged inside the box body, arranged below the arc-shaped screen plate, and the collection box is fixedly connected to the bottom surface inside the box body. The discharge port is arranged on the side of the screening box away from the circular gear and arranged below the first threaded rod.

[0016] When the screening box moves left and right, the screening box will drive the circular gear to move left and right, and the circular gear rotates with the cooperation of the rack. The rotation of the circular gear drives the first threaded rod to rotate, and the rotation of the first threaded rod drives the scraper to move left and right. The left and right movement of the scraper pushes the larger plastic particles after screening through the discharge port into the collection box. When the scraper moves left and right, the scraper drives the brush cylinder to move left and right, and the brush cylinder rotates with the cooperation of the second threaded rod. The rotation of the brush cylinder can clean up the larger plastic particles that block the sieve holes on the arc sieve plate, thereby increasing the powder screening efficiency.

[0017] Furthermore, a baffle is provided in the collection box.

[0018] The baffle of the collection box can divide the collection box into several areas, which can collect plastic powder and larger plastic particles at the same time, making it convenient for staff to operate.

[0019] Furthermore, the discharge port is higher than the arc-shaped screen plate by a certain distance.

[0020] The discharge material is higher than the curved screen plate to prevent the scraper from pushing the larger plastic particles into the collection box.

[0021] Furthermore, a switch door is provided outside the discharge port.

[0022] The switch door outside the discharge port pushes the switch door when the scraper pushes the enlarged plastic particles, so that the larger plastic can enter the collection box. It is closed at other times to prevent plastic powder from entering the collection box through the discharge port.

[0023] Beneficial effects of the present invention: 1. The first threaded rod and the circular gear are driven to move by the left and right movement of the screening box. The circular gear rotates under the action of the fixed rack to drive the first threaded rod to rotate. The rotation of the first threaded rod drives the scraper to move left and right. The left and right movement of the scraper drives the brush cylinder to move left and right. The brush cylinder rotates with the cooperation of the second threaded rod, thereby cleaning the arc screen plate, removing the larger plastic particles and impurities on it, and preventing blockage.

[0024] 2. As the scraper moves left and right, larger plastic particles can be pushed into the collection box, reducing the risk of clogging of the screen holes, improving screening efficiency, and ensuring the quality of recycled plastics. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] Figure 1 It is a front cross-sectional view of the present invention; Figure 2 It is a rear view of the screening box of the present invention; Figure 3 It is a front view of the screening box of the present invention.

[0027] Description of reference numerals: 1. box body; 201. partition; 202. crushing box; 203. arc filter plate; 204. spherical connector; 205. first connecting rod; 206. rolling head; 207. first long strip opening; 208. first motor; 209. curved rod; 210. conveying box; 211. rotating rod; 212. spiral blade; 213. placing plate; 214. second motor; 215. feeding hopper; 216. refrigerator; 217. nozzle; 218. Connecting pipe; 301, second long strip opening; 302, second connecting rod; 303, third connecting rod; 304, sliding block; 305, screening box; 306, arc-shaped screen plate; 307, dividing plate; 308, spring; 401, third long strip opening; 402, fixing rod; 403, first threaded rod; 404, circular gear; 405, rack; 406, two second threaded rods; 407, scraper; 408 brush cylinder; 409, collecting box; 410, discharge port. DETAILED DESCRIPTION

[0028] The following will be combined with 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 making creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 3 The present invention provides a powder screening plastic recycling machine, comprising: a box body 1, a cooling and grinding device, a powder screening device, and a cleaning device. The cooling and grinding device is arranged inside the box body 1 and connected to the box body 1. The powder screening device is arranged inside the box body 1, arranged below the cooling and grinding device, and connected to the cooling and grinding device. The cleaning device is arranged below the cooling and grinding device, arranged inside the powder screening device, and connected to the powder screening device.

[0030] At the beginning of the work, the staff puts the plastic into the cooling and grinding device, and then the staff turns on the cooling and grinding device. The cooling and grinding device will perform initial crushing on the plastic, and then grind the initially crushed plastic into powder. The plastic powder enters the powder screening device, and the cooling and grinding device drives the powder screening device to screen the plastic powder. At the same time, the powder screening device will drive the cleaning device to clean the inside of the powder screening device to prevent the powder screening device from being blocked.

[0031] The cooling and grinding device includes: a partition 201, a crushing box 202, an arc filter plate 203, a spherical connector 204, a first connecting rod 205, a rolling head 206, a first long strip opening 207, a first motor 208, a curved rod 209, a conveying box 210, a rotating rod 211, a spiral blade 212, a placement plate 213, a second motor 214, a feed hopper 215, a refrigerator 216, a plurality of nozzles 217, and a connecting pipe 218. The partition 201 is horizontally arranged inside the box body 1, and the partition 201 is fixedly connected to the box body 1. The crushing box 202 is arranged below the partition 201, and the crushing box 202 is fixedly connected to the partition 201. The arc filter plate 203 is arranged below the crushing box 202 and is fixedly connected to the crushing box 202. The spherical connector 204 penetrates the partition 201, and the spherical connector 204 is fixedly connected to the partition 201. The first connecting rod 205 is arranged obliquely, passes through the spherical connector 204, is arranged inside the crushing box 202, is arranged above the arc filter plate 203, and is fixedly connected to the spherical connector 204. The rolling head 206 is arranged inside the crushing box 202, is arranged below the first connecting rod 205, is arranged above the arc filter plate 203, and is fixedly connected to the lower end of the first connecting rod 205. The first long opening 207 is arranged at the upper end of the first connecting rod 205, and is arranged above the spherical connector 204. The axis of the first motor 208 is arranged horizontally, and the first motor 208 is arranged above the partition 201 and on the side of the first connecting rod 205. The first motor 208 is fixedly connected to the partition 201. The bent rod 209 is tilted, the lower end of the bent rod 209 is sleeved on the rotating shaft of the first motor 208, the upper end of the bent rod 209 passes through the first long strip opening 207, the lower end of the bent rod 209 is fixedly connected to the rotating shaft of the first motor 208, and the upper end of the bent rod 209 contacts the first long strip opening 207. The axis of the conveying box 210 is horizontally arranged, the conveying box 210 passes through the side of the box body 1, is arranged above the partition 201, and is arranged on the side of the first motor 208. The conveying box 210 is fixedly connected to the partition 201, and the conveying box 210 is connected to the crushing box 202. The axis of the rotating rod 211 coincides with the axis of the conveying box 210, the rotating rod 211 passes through the side of the conveying box 210 away from the first motor 208, the rotating rod 211 is rotatably connected to the conveying box 210, and its rotation axis is horizontally arranged. The spiral blade 212 is arranged in the conveying box 210, sleeved on the rotating rod 211, and fixedly connected to the rotating rod 211. The placement plate 213 is horizontally arranged, and is arranged on the side of the conveying box 210 away from the first motor 208, and the placement plate 213 is fixedly connected to the conveying box 210. The axis of the second motor 214 shaft coincides with the axis of the rotating rod 211, and the second motor 214 is arranged above the placement plate 213, and the second motor 214 shaft is fixedly connected to the rotating rod 211, and the second motor 214 is fixedly connected to the placement plate 213. The feed hopper 215 is arranged above the conveying box 210, and is arranged on the side of the box body 1, and the feed hopper 215 is connected to the conveying box 210.The refrigerator 216 is disposed above the partition 201 and on the side of the first motor 208 away from the conveying box 210, and the refrigerator 216 is fixedly connected to the partition 201. A plurality of nozzles 217 are disposed on the rolling head 206, and the plurality of nozzles 217 are fixedly connected to the rolling head 206. The connecting pipe 218 passes through the partition 201, and the upper end of the connecting pipe 218 is connected to the refrigerator 216, and the lower end of the connecting pipe 218 is connected to the plurality of nozzles 217.

[0032] At the beginning of the work, the staff puts the plastic into the feed hopper 215, and the plastic enters the conveying box 210 through the feed hopper 215, and then turns on the second motor 214, the first motor 208 and the refrigerator 216. When the staff turns on the second motor 214, the second motor 214 rotates to drive the rotating rod 211 to rotate and drive the spiral blade 212 to rotate. The spiral blade 212 rotates to drive the plastic from the conveying box 210 into the crushing box 202. The spiral blade 212 will initially crush the plastic in the process of conveying the plastic, thereby increasing the crushing effect of the plastic. When the staff turns on the first motor 208, the first motor 208 rotates to drive the curved rod 209 to rotate, the rotation of the curved rod 209 drives the first connecting rod 205 to rotate back and forth, the rotation of the first connecting rod 205 drives the crushing head 206 to rotate back and forth to crush the plastic, and the crushed plastic is initially screened through the arc filter plate 203 and enters the screening box 305. In the process of crushing the plastic, the refrigerator 216 transports the cooling gas to the crushing box 202, thereby reducing the temperature of the plastic and increasing the crushing effect.

[0033] The connecting pipe 218 is a stainless steel hose.

[0034] Stainless steel hose has a wide temperature resistance range and good flexibility The rolling head 206 is provided with rolling teeth.

[0035] The crushing teeth can increase the crushing effect on the plastic.

[0036] The powder screening device includes: two second long strip openings 301, a second connecting rod 302, two third connecting rods 303, two sliding blocks 304, a screening box 305, an arc-shaped screen plate 306, a material dividing plate 307, and two springs 308. The two second long strip openings 301 are vertically arranged, respectively arranged on two sides of the crushing box 202 that are away from each other. The second connecting rod 302 is horizontally arranged, passes through the two second long strip openings 301, and is arranged on the side of the first connecting rod 205. The second connecting rod 302 is rotatably connected to the first connecting rod 205, and its rotation axis is horizontally arranged. The second connecting rod 302 contacts the two second long strip openings 301. The two third connecting rods 303 are vertically arranged, respectively arranged on the sides of the two second long strip openings 301 that are away from each other, and are arranged below the second connecting rod 302. The upper ends of the two third connecting rods 303 are fixedly connected to the second connecting rod 302. The two sliding blocks 304 are respectively sleeved on the two third connecting rods 303, the two sliding blocks 304 are arranged below the second connecting rod 302, and the two sliding blocks 304 are respectively slidably connected with the two third connecting rods 303 in the vertical direction. The screening box 305 is arranged on the side where the two sliding blocks 304 are close to each other, and is arranged below the crushing box 202. The two sides of the screening box 305 are respectively fixedly connected with the two sliding blocks 304. The arc screen plate 306 is arranged below the screening box 305, and the arc screen plate 306 is fixedly connected to the screening box 305. The dividing plate 307 is arranged in the screening box 305, and the dividing plate 307 is arranged above the arc screen plate 306, and is arranged below the arc filter plate 203, and the dividing plate 307 is fixedly connected to the screening box 305. The two springs 308 are arranged horizontally, respectively arranged below the two sliding blocks 304, and respectively arranged on the sides of the screening box 305 close to the two sliding blocks 304. The ends of the two springs 308 close to each other are fixedly connected to the two side surfaces of the screening box 305, and the ends away from each other are fixedly connected to the box body 1.

[0037] When the first connecting rod 205 rotates, the first connecting rod 205 drives the second connecting rod 302 to rotate, the second connecting rod 302 drives the third connecting rod 303 to rotate, the third connecting rod 303 drives the screening box 305 to move left and right, the screening box 305 moves left and right to drive the arc screen plate 306 to move left and right, thereby screening the plastic powder.

[0038] The spring 308 is a multi-strand coil spring 308 .

[0039] The multi-strand helical spring 308 has good support and is easily compressed, and can provide a buffering effect while providing vertical support force to the screening box 305.

[0040] The cleaning device includes: two third long strip openings 401, a fixed rod 402, a first threaded rod 403, a circular gear 404, a rack 405, two second threaded rods 406, a scraper 407, two brush cylinders 408, a collection box 409, and a discharge port 410. The two third long strip openings 401 are respectively arranged on the two sides of the screening box 305, arranged below the material dividing plate 307, and arranged above the arc-shaped screen plate 306. The fixed rod 402 passes through the two third long strip openings 401, is arranged below the material dividing plate 307, and is arranged above the arc-shaped screen plate 306, and the fixed rod 402 is fixedly connected to the box body 1. The first threaded rod 403 passes through the side of the screening box 305, is arranged below the two third long strip openings 401, and is arranged above the arc-shaped screen plate 306. The first threaded rod 403 is rotatably connected to the screening box 305, and its rotation axis is arranged horizontally. The circular gear 404 is sleeved on the first threaded rod 403, arranged below the fixed rod 402, and arranged on the side of the screening box 305 close to the box body 1, and the circular gear 404 is fixedly connected to the first threaded rod 403. The rack 405 is sleeved on the fixed rod 402, arranged above the circular gear 404, and arranged on the side of the screening box 305 close to the box body 1. The rack 405 is fixedly connected to the fixed rod 402 and meshes with the circular gear 404. The two second threaded rods 406 are horizontally arranged, arranged in the screening box 305, arranged below the two third long strip openings 401, and arranged above the first threaded rod 403. The two second threaded rods 406 are fixedly connected to the screening box 305. The scraper 407 is vertically arranged, sleeved on the first threaded rod 403, sleeved on the two second threaded rods 406, arranged below the fixed rod 402, and arranged above the arc-shaped screen plate 306. The scraper 407 is threadedly connected with the first threaded rod 403, and is slidably connected with the two second threaded rods 406 in the horizontal direction. Two brush cylinders 408 are respectively sleeved on the two second threaded rods 406, and are arranged on the side of the scraper 407 close to the circular gear 404. The two brush cylinders 408 are rotatably connected with the scraper 407, and their rotation axes are parallel to the rotation axis of the first threaded rod 403. The two brush cylinders 408 are respectively threadedly connected with the two second threaded rods 406. The collection box 409 is arranged inside the box body 1, arranged below the arc-shaped screen plate 306, and the collection box 409 is fixedly connected to the bottom surface of the box body 1. The discharge port 410 is arranged on the side of the screening box 305 away from the circular gear 404, and is arranged below the first threaded rod 403.

[0041] When the screening box 305 moves left and right, the screening box 305 drives the circular gear 404 to move left and right, and the circular gear 404 rotates with the cooperation of the rack 405. The rotation of the circular gear 404 drives the first threaded rod 403 to rotate, and the rotation of the first threaded rod 403 drives the scraper 407 to move left and right. The scraper 407 moves left and right to push the screened larger plastic particles through the discharge port 410 into the collection box 409. When the scraper 407 moves left and right, the scraper 407 drives the brush cylinder to move left and right, and the brush cylinder rotates with the cooperation of the second threaded rod. The rotation of the brush cylinder can clean the larger plastic particles that block the sieve holes on the arc sieve plate 306, thereby increasing the powder screening efficiency.

[0042] A baffle is provided inside the collection box 409 .

[0043] The baffle of the collection box 409 can divide the collection box 409 into several areas, and can collect plastic powder and larger plastic particles at the same time, which is convenient for the staff to operate.

[0044] The discharge port 410 is higher than the arc-shaped screen plate 306 by a certain distance.

[0045] The discharge is higher than the arc sieve plate 306 to prevent the scraper 407 from pushing the plastic powder into the collection box 409 when pushing larger plastic particles.

[0046] A switch door is provided outside the discharge port 410 .

[0047] The switch door outside the discharge port 410 is pushed when the scraper 407 pushes the enlarged plastic particles, so that the larger plastic can enter the collection box 409, and is closed at other times to prevent plastic powder from entering the collection box 409 through the discharge port 410.

[0048] Working principle: At the beginning of the work, the staff puts the plastic into the feed hopper 215, and the plastic enters the conveying box 210 through the feed hopper 215, and then turns on the second motor 214, the first motor 208 and the refrigerator 216. When the staff turns on the second motor 214, the second motor 214 rotates to drive the rotating rod 211 to rotate and drive the spiral blade 212 to rotate. The spiral blade 212 rotates to drive the plastic from the conveying box 210 into the crushing box 202. The spiral blade 212 will initially crush the plastic in the process of conveying the plastic, thereby increasing the crushing effect of the plastic.

[0049] When the staff turns on the first motor 208, the first motor 208 rotates to drive the curved rod 209 to rotate, the rotation of the curved rod 209 drives the first connecting rod 205 to rotate back and forth, the rotation of the first connecting rod 205 drives the crushing head 206 to rotate back and forth to crush the plastic, and the crushed plastic is initially screened through the arc filter plate 203 and enters the screening box 305. In the process of crushing the plastic, the refrigerator 216 transports the cooling gas to the crushing box 202, thereby reducing the temperature of the plastic and increasing the crushing effect.

[0050] When the first connecting rod 205 rotates, the first connecting rod 205 drives the second connecting rod 302 to rotate, the second connecting rod 302 drives the third connecting rod 303 to rotate, the third connecting rod 303 drives the screening box 305 to move left and right, the screening box 305 moves left and right to drive the arc screen plate 306 to move left and right, thereby screening the plastic powder.

[0051] When the screening box 305 moves left and right, the screening box 305 drives the circular gear 404 to move left and right, and the circular gear 404 rotates with the cooperation of the rack 405. The rotation of the circular gear 404 drives the first threaded rod 403 to rotate, and the rotation of the first threaded rod 403 drives the scraper 407 to move left and right. The scraper 407 moves left and right to push the screened larger plastic particles through the discharge port 410 into the collection box 409. When the scraper 407 moves left and right, the scraper 407 drives the brush cylinder to move left and right, and the brush cylinder rotates with the cooperation of the second threaded rod. The rotation of the brush cylinder can clean the larger plastic particles that block the sieve holes on the arc sieve plate 306, thereby increasing the powder screening efficiency.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A powder screening plastic recycling machine, characterized in that: include: A box body (1), a cooling and grinding device, a powder screening device, and a cleaning device; the cooling and grinding device is arranged inside the box body (1) and is connected to the box body (1); the powder screening device is arranged inside the box body (1), arranged below the cooling and grinding device, and is connected to the cooling and grinding device; the cleaning device is arranged below the cooling and grinding device, arranged inside the powder screening device, and is connected to the powder screening device.

2. A powder screening plastic recycling machine according to claim 1, characterized in that: The cooling and grinding device comprises: a partition (201), a crushing box (202), an arc-shaped filter plate (203), a spherical connector (204), a first connecting rod (205), a rolling head (206), a first long strip opening (207), a first motor (208), a curved rod (209), a conveying box (210), a rotating rod (211), a spiral blade (212), a placement plate (213), a second motor (214), a feed hopper (215), a refrigerator (216), a plurality of nozzles (217), and a connecting pipe (218); the partition (201) is horizontally arranged and arranged inside the box body (1); the partition (201) is fixedly connected to the box body (1); the crushing box (2 02) is arranged below the partition (201), and the crushing box (202) is fixedly connected to the partition (201); the arc-shaped filter plate (203) is arranged below the crushing box (202) and is fixedly connected to the crushing box (202); the spherical connector (204) passes through the partition (201), and the spherical connector (204) is fixedly connected to the partition (201); the first connecting rod (205) is arranged obliquely, and the first connecting rod (205) passes through the spherical connector (204), is arranged inside the crushing box (202), and is arranged above the arc-shaped filter plate (203), and the first connecting rod (205) and the spherical connector (204) are connected to each other. The crushing head (206) is arranged inside the crushing box (202), below the first connecting rod (205), and above the arc filter plate (203), and the crushing head (206) is fixedly connected to the lower end of the first connecting rod (205); the first long strip opening (207) is arranged at the upper end of the first connecting rod (205), and above the spherical connecting head (204); the axis of the first motor (208) is arranged horizontally, the first motor (208) is arranged above the partition (201), and is arranged on the side of the first connecting rod (205), and the first motor (208) is fixedly connected to the partition (201); the curved rod (20 9) is arranged obliquely, the lower end of the curved rod (209) is sleeved on the rotating shaft of the first motor (208), the upper end of the curved rod (209) passes through the first long strip opening (207), the lower end of the curved rod (209) is fixedly connected to the rotating shaft of the first motor (208), and the upper end of the curved rod (209) is in contact with the first long strip opening (207); the axis of the conveying box (210) is arranged horizontally, the conveying box (210) passes through the side of the box body (1), is arranged above the partition (201), and is arranged on the side of the first motor (208), the conveying box (210) is fixedly connected to the partition (201), and the conveying box (210) is communicated with the crushing box (202);The axis of the rotating rod (211) coincides with the axis of the conveying box (210); the rotating rod (211) passes through the side of the conveying box (210) away from the first motor (208); the rotating rod (211) is rotatably connected to the conveying box (210), and its rotation axis is arranged horizontally; the spiral blade (212) is arranged in the conveying box (210), sleeved on the rotating rod (211), and fixedly connected to the rotating rod (211); the placement plate (213) is arranged horizontally, and is arranged on the side of the conveying box (210) away from the first motor (208); the placement plate (213) is fixedly connected to the conveying box (210); the axis of the rotating shaft of the second motor (214) coincides with the axis of the rotating rod (211); the second motor (214) is arranged above the placement plate (213), and the rotating shaft of the second motor (214) is connected to the rotating rod (211) is fixedly connected, the second motor (214) is fixedly connected to the placement plate (213); the feed hopper (215) is arranged above the conveying box (210) and on the side of the box body (1), and the feed hopper (215) is connected to the conveying box (210); the refrigerator (216) is arranged above the partition (201) and on the side of the first motor (208) away from the conveying box (210). , the refrigerator (216) is fixedly connected to the partition (201); a plurality of the nozzles (217) are arranged on the rolling head (206), and a plurality of the nozzles (217) are fixedly connected to the rolling head (206); the connecting pipe (218) passes through the partition (201), the upper end of the connecting pipe (218) is connected to the refrigerator (216), and the lower end of the connecting pipe (218) is connected to a plurality of the nozzles (217). ; 3. A powder screening plastic recycling machine according to claim 2, characterized in that: The connecting pipe (218) is a stainless steel hose.

4. A powder screening plastic recycling machine according to claim 2, characterized in that: The rolling head (206) is provided with rolling teeth.

5. A powder screening plastic recycling machine according to claim 2, characterized in that: The powder screening device comprises: two second long strip openings (301), a second connecting rod (302), two third connecting rods (303), two sliding blocks (304), a screening box (305), an arc-shaped screening plate (306), a material dividing plate (307), and two springs (308); the two second long strip openings (301) are vertically arranged, and are respectively arranged on two side surfaces of the crushing box (202) that are away from each other; the second connecting rod (302) is horizontally arranged, passes through the two second long strip openings (301), and is arranged on the side of the first connecting rod (205); the second connecting rod (302) The second connecting rod (302) is rotatably connected to the first connecting rod (205), and its rotation axis is horizontally arranged. The second connecting rod (302) is in contact with the two second long strip openings (301); the two third connecting rods (303) are vertically arranged, respectively arranged on the sides of the two second long strip openings (301) away from each other, and arranged below the second connecting rod (302), and the upper ends of the two third connecting rods (303) are fixedly connected to the second connecting rod (302); the two sliding blocks (304) are respectively sleeved on the two third connecting rods (303), and the two sliding blocks (304) are arranged on the second connecting rods (303). Below the second connecting rod (302), the two sliding blocks (304) are respectively connected to the two third connecting rods (303) in a sliding manner in the vertical direction; the screening box (305) is arranged on the side where the two sliding blocks (304) are close to each other, and is arranged below the crushing box (202), and the two side surfaces of the screening box (305) are respectively fixedly connected to the two sliding blocks (304); the arc-shaped screen plate (306) is arranged below the screening box (305), and the arc-shaped screen plate (306) is fixedly connected to the screening box (305); the material dividing plate (307) is arranged on the screening box (305); In the box (305), the material dividing plate (307) is arranged above the arc-shaped screen plate (306) and below the arc-shaped filter plate (203), and the material dividing plate (307) is fixedly connected to the screening box (305); the two springs (308) are arranged horizontally, respectively arranged below the two sliding blocks (304), and respectively arranged on the sides of the screening box (305) close to the two sliding blocks (304); the ends of the two springs (308) close to each other are respectively fixedly connected to the two side surfaces of the screening box (305), and the ends of the two springs far away from each other are fixedly connected to the box body (1).

6. A powder screening plastic recycling machine according to claim 5, characterized in that: The spring (308) is a multi-strand helical spring (308).

7. A powder screening plastic recycling machine according to claim 5, characterized in that: The cleaning device comprises: two third long strip openings (401), a fixed rod (402), a first threaded rod (403), a circular gear (404), a rack (405), two second threaded rods (406), a scraper (407), two brush cylinders (408), a collection box (409), and a discharge port (410); the two third long strip openings (401) are respectively arranged on two sides of the screening box (305), arranged below the material distribution plate (307), and arranged above the arc-shaped screen plate (306); the fixed rod (402) passes through the two third long strip openings (401), is arranged below the material distribution plate (307), and is arranged above the arc-shaped screen plate (306). The fixing rod (402) is fixedly connected to the box body (1); the first threaded rod (403) passes through the side of the screening box (305), is arranged below the two third long strip openings (401), and is arranged above the arc-shaped screen plate (306); the first threaded rod (403) is rotatably connected to the screening box (305), and its rotation axis is arranged horizontally; the circular gear (404) is sleeved on the first threaded rod (403), is arranged below the fixing rod (402), and is arranged on the side of the screening box (305) close to the box body (1); the circular gear (404) is fixedly connected to the first threaded rod (403); the rack (405) is sleeved on the first threaded rod (403); The fixing rod (402) is arranged above the circular gear (404) and is arranged on the side of the screening box (305) close to the box body (1); the rack (405) is fixedly connected to the fixing rod (402) and meshes with the circular gear (404); the two second threaded rods (406) are arranged horizontally, arranged in the screening box (305), arranged below the two third long strip openings (401), and arranged above the first threaded rod (403); the two second threaded rods (406) are fixedly connected to the screening box (305); the scraper (407) is arranged vertically, sleeved on the first threaded rod (403), and sleeved on the two second threaded rods ( The first threaded rod (403) is provided on the second threaded rod (406), is provided below the fixed rod (402), and is provided above the arc-shaped screen plate (306); the scraper (407) is threadedly connected to the first threaded rod (403), and is slidably connected to the two second threaded rods (406) in the horizontal direction; the two brush cylinders (408) are respectively sleeved on the two second threaded rods (406), and are provided on the side of the scraper (407) close to the circular gear (404); the two brush cylinders (408) are rotatably connected to the scraper (407), and the rotation axis thereof is parallel to the rotation axis of the first threaded rod (403); the two brush cylinders (408) are respectively threadedly connected to the two second threaded rods (406);The collecting box (409) is arranged inside the box body (1) and below the arc-shaped screen plate (306), and the collecting box (409) is fixedly connected to the bottom surface inside the box body (1); the discharge port (410) is arranged on the side of the screening box (305) away from the circular gear (404), and below the first threaded rod (403).

8. A powder screening plastic recycling machine according to claim 7, characterized in that: A baffle is provided inside the collection box (409).

9. A powder screening plastic recycling machine according to claim 7, characterized in that: The discharge port (410) is higher than the arc-shaped screen plate (306) by a certain distance.

10. A powder screening plastic recycling machine according to claim 7, characterized in that: A switch door is provided outside the discharge port (410).

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