Multi-stage screening device for plastic particles
By designing a multi-stage screening device and a corresponding discharge mechanism, the problem of screen hole clogging during the screening of plastic particles was solved, achieving efficient and thorough separation of plastic particles and improving screening efficiency and quality.
Patent Information
- Application Number
- CN202511529352.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-24
- Publication Date
- 2025-12-05
AI Technical Summary
When screening plastic particles in existing multi-stage screening devices, some plastic particles get stuck on the screen plate, causing the screen holes to become clogged and reducing screening efficiency and effectiveness.
A multi-stage screening device for plastic granules was designed, which adopts a multi-stage screening mechanism and a corresponding discharge mechanism. The screening cylinder is driven to rotate and shake by a drive mechanism, and the tilt angle of the screening cylinder is controlled by a cylinder. A blocking component is used to prevent granules from getting stuck in the screen holes. The discharge mechanism is used to achieve efficient screening.
It improves screening efficiency, reduces screen clogging, ensures thorough separation of plastic particles of different sizes, improves screening quality and efficiency, and reduces material waste.
Smart Images
Figure CN121062068A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of plastic particle screening, and discloses a multi-stage plastic particle screening device. BACKGROUND
[0002] Plastic particles need to be screened before use, so that the uniformity of the plastic particles in the subsequent use process is ensured, thereby playing a role in ensuring product quality. When the particle sizes of the plastic particles are consistent, the melt flowability of the plastic particles is also consistent, process parameters are more controllable, product surface defects such as spots and bubbles can be effectively avoided, and the strength of the product meets the standard.
[0003] For example, patent application No. 2023103926932 discloses a modified plastic particle multi-stage screening device, which comprises a box body provided with a feeding port at the top end, a plurality of screening parts are sequentially arranged in the box body from top to bottom, the screening part comprises an upper sieve plate arranged obliquely and a lower sieve plate slidably connected to the upper sieve plate below the upper sieve plate; a plurality of upper sieve holes are uniformly distributed on the upper sieve plate, a plurality of lower sieve holes are uniformly distributed on the lower sieve plate, a plurality of anti-blocking units are arranged on the lower sieve plate corresponding to the lower sieve holes, the anti-blocking unit comprises a rectangular sink arranged along the length direction of the lower sieve plate, a sliding plate arranged in the rectangular sink and a striking rod rotatably connected to the lower sieve plate, when the sliding plate slides away from the lower sieve hole, the sliding plate pushes the striking rod to rotate so that the lower end of the striking rod extends into the screening channel, the side wall of the box body is fixedly connected with a gas cylinder, and the output shaft of the gas cylinder is arranged along the length direction of the upper sieve plate.
[0004] When the existing multi-stage screening device screens plastic particles, part of the plastic particles will be stuck on the sieve plate, blocking the sieve holes, thereby reducing the screening efficiency and reducing the number of sieve holes that can effectively screen, so that part of the plastic particles that can be screened are not screened out and moved to the stacking place that does not belong to the particle size of the plastic particles, thereby making the screening effect poor. SUMMARY
[0005] Therefore, the purpose of the present application is to provide a plastic particle multi-stage screening device to solve the technical problem that part of the plastic particles will be stuck on the sieve plate when the existing multi-stage screening device screens plastic particles, blocking the sieve holes, thereby reducing the screening efficiency and reducing the number of sieve holes that can effectively screen, so that part of the plastic particles that can be screened are not screened out and moved to the stacking place that does not belong to the particle size of the plastic particles, thereby making the screening effect poor.
[0006] In order to achieve the above object, the present application provides the following technical scheme: a plastic particle multi-stage screening device, comprising a base, a first matching frame is arranged on the base, a second matching frame which can rotate is arranged on the first matching frame, a first air cylinder is arranged between the first matching frame and the second matching frame, the two ends of the first air cylinder are rotatably connected with the first matching frame and the second matching frame respectively, and a multi-stage screening mechanism for screening plastic particles is arranged on the second matching frame; a feeding port is arranged on one side of the multi-stage screening mechanism, the feeding port is connected with the base through an extension rod, and the two ends of the extension rod are hinged to the feeding port and the base; a discharging assembly is arranged on the other side of the multi-stage screening mechanism.
[0007] Further, the multi-stage screening mechanism comprises a screening cylinder which is fixedly connected to the second matching frame, a plurality of groups of circular screens are arranged in the screening cylinder, the plurality of groups of circular screens are placed from inside to outside in sequence, a plurality of groups of filter holes are formed in the plurality of groups of circular screens, the filter holes of the circular screen closer to the center have larger diameters, and the filter holes of the circular screen closer to the outside have smaller diameters; the space between every two adjacent circular screens and the space inside the circular screen located at the center are filter cavities, a first auxiliary assembly is arranged in the filter cavity located at the center, and a second auxiliary assembly is arranged in the remaining filter cavities; the diameters of the plurality of groups of circular screens are different, the axes of the plurality of groups of circular screens overlap with the axis of the screening cylinder; a plurality of groups of second fixed blocks are fixedly connected to the inner walls of the plurality of groups of circular screens, and the cross section of the second fixed block is triangular.
[0008] Further, a second sealing plate is arranged on one side of the screening cylinder, the second sealing plate is rotatably connected with the screening cylinder, a fixed plate which can rotate is arranged at the center of the second sealing plate, a plurality of groups of first clamping blocks are arranged on the second sealing plate, and one end of each of the plurality of groups of circular screens is clamped in each of the plurality of groups of first clamping blocks; a plurality of groups of first sealing plates are arranged on the other side of the screening cylinder, one end of each of the plurality of groups of circular screens is clamped on each of the plurality of groups of first sealing plates, a second matching ring which can rotate is arranged between every two adjacent first sealing plates, the plurality of groups of first sealing plates and the plurality of groups of second matching rings are staggered with each other, and the first sealing plate located at the outermost side is rotatably connected with the screening cylinder.
[0009] Further, the first auxiliary assembly comprises a first connecting shaft, the hitting block is close to the adjacent circular screen, the first connecting shaft is arranged through the first sealing plate and the fixed plate; the second auxiliary assembly comprises a first matching ring, a plurality of sets of limiting blocks are arranged on the second sealing plate, the first matching ring is slidably clamped on the plurality of sets of limiting blocks, a plurality of sets of clamping blocks are fixedly connected on the first matching ring, and a rectangular groove is formed in each set of clamping blocks; a plurality of sets of first connecting frames are arranged on the second matching ring.
[0010] Further, a plurality of sets of the first connecting frames and the first connecting shaft are fixedly connected with a plurality of sets of extension blocks and hitting blocks, a plurality of sets of the second fixed blocks and a plurality of sets of the hitting blocks are staggered with each other; one of the hitting blocks on the first connecting frame is clamped in the corresponding rectangular groove.
[0011] Further, the discharging assembly comprises a discharging box, a plurality of sets of matching grooves are arranged in the discharging box, a discharging port is formed in each set of the matching grooves, and the inner walls of the matching grooves are inclined; a plurality of sets of the first sealing plates are provided with discharging valves, and a plurality of sets of the discharging valves are aligned with a plurality of sets of the matching grooves respectively; a fixed frame is arranged on the base, the fixed frame is slidably connected with the discharging box, a first fixed block is fixedly connected to the discharging box, the first fixed block is slidably clamped on the fixed frame, a second air cylinder is arranged on the fixed frame, and the telescopic end of the second air cylinder is fixedly connected with the first fixed block.
[0012] Further, the screening drum is provided with a driving mechanism, the driving mechanism comprises a fixed plate, the fixed plate is fixedly connected to the screening drum, a driving motor is arranged on the fixed plate, a second connecting shaft is arranged at the extending end of the driving motor, two sets of connecting seats are arranged on the screening drum, and the second connecting shaft is arranged through the two sets of connecting seats; a spur gear is fixedly connected to the second connecting shaft, a tooth ring is fixedly connected to the second sealing plate, and the spur gear is meshed with the tooth ring; a belt is arranged between the second connecting shaft and the first connecting shaft, and a connecting assembly is arranged on the first connecting shaft.
[0013] Further, the connecting assembly comprises two sets of first connecting sleeves and two sets of second connecting sleeves, the two sets of first connecting sleeves and the two sets of second connecting sleeves are clamped on the first connecting shaft, a plurality of sets of second clamping blocks are fixedly connected to the first connecting shaft, the first connecting sleeve and the second connecting sleeve are clamped on the plurality of sets of second clamping blocks, the two sets of first connecting sleeves are fixedly connected, and the two sets of second connecting sleeves are fixedly connected to the first connecting shaft; two sets of first fixed rods are fixedly connected to the first connecting sleeve, and the two sets of first fixed rods are clamped on the plurality of sets of second matching rings.
[0014] Further, the screening barrel is provided with a matched discharging mechanism, the matched discharging mechanism comprises a first movable ring and a second movable ring, a plurality of groups of second connecting frames and a plurality of groups of magnets are fixedly connected to the first movable ring and the second movable ring; a supporting block is arranged on the second movable ring, and the second movable ring is slidingly clamped in the supporting block; a fixed ring is arranged on the first movable ring, and the second connecting frames on the first movable ring are slidingly clamped in the fixed ring; the second movable ring is connected with the fixed plate, the first movable ring is connected with the screening barrel, two groups of second matching blocks are fixedly connected to the fixed plate and the screening barrel, and four groups of first matching blocks are slidingly clamped in the second matching blocks, wherein two groups of the first matching blocks are fixedly connected to the supporting block, and the remaining two groups of the first movable ring are fixedly connected to the fixed ring; a plurality of groups of blocking components are arranged between the plurality of groups of second connecting frames, and the plurality of groups of blocking components are matched with the plurality of groups of circular screens.
[0015] Further, the blocking component comprises an arc-shaped plate, the arc-shaped plate is located in the filtering cavity, a plurality of groups of blocking blocks are fixedly connected to the arc-shaped plate, and the blocking blocks can be clamped in the filtering holes; two groups of metal blocks are fixedly connected to the two sides of the arc-shaped plate, and a plurality of groups of magnets are aligned with a plurality of groups of the metal blocks.
[0016] The working principle and beneficial effects of the scheme are:
[0017] In use, the worker first pours the plastic particles to be screened into the feed inlet, and then the worker drives the multi-stage screening mechanism to operate through the driving mechanism, so as to screen the plastic particles in multiple stages, and at the same time, the worker makes the screening barrel shake by controlling the first cylinder to extend and retract, so that the plastic particles in the screening barrel also move with the movement of the screening barrel, so as to increase the moving direction of the plastic particles and enable the plastic particles in the screening barrel to move in multiple directions, thereby improving the screening efficiency.
[0018] When the screening of the plastic particles in the screening barrel is completed, the matched discharging mechanism is started to move the arc-shaped plate to a specified position, at this time, the filtering holes below the circular screen are blocked, and at this time, the plastic particles cannot be clamped in the filtering holes, then the discharge valve is opened, at this time, the plastic particles can be smoothly removed, at this time, the worker only needs to place a collecting frame at the outlet end of the discharge outlet to collect the screened plastic particles, and during screening, the situation that the filtering holes are blocked due to the plastic particles during screening, thereby reducing the screening efficiency, is avoided, thereby improving the screening efficiency, and the quality of the screening meets the standard, and the plastic particles of different particle sizes will not be mixed due to incomplete screening. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1Structure schematic view of the embodiment;
[0020] Figure 2 Exploded view of the embodiment;
[0021] Figure 3 Structure schematic view of the internal structure of the embodiment;
[0022] Figure 4 Structure schematic view of the multi-stage screening mechanism in the embodiment;
[0023] Figure 5 Structure schematic view of the cooperating discharging mechanism in the embodiment;
[0024] Figure 6 Structure schematic view of the first auxiliary assembly in the embodiment;
[0025] Figure 7 Structure schematic view of the Figure 6 Enlarged schematic view of A in the embodiment;
[0026] Figure 8 Structure schematic view of the second auxiliary assembly in the embodiment;
[0027] Figure 9 Structure schematic view of the Figure 8 Enlarged schematic view of B in the embodiment;
[0028] Figure 10 Structure schematic view of the discharging box in the embodiment.
[0029] In the drawings, the following are marked: base 101, first cooperating frame 102, second cooperating frame 103, screening cylinder 104, fixed frame 105, discharging box 106, feeding port 107, first air cylinder 108;
[0030] Second air cylinder 201, first fixed block 202, first fixed groove 203, cooperating groove 204, discharging port 205, discharging valve 206;
[0031] Circular screen 301, second fixed block 302, first sealing plate 303, second fixed groove 304, second sealing plate 305, fixed plate 306, first clamping block 307;
[0032] First connecting shaft 401, extension block 402, hitting block 403, first cooperating ring 404, clamping block 405, rectangular groove 406, first connecting frame 407, second cooperating ring 408, third fixed groove 409, second clamping block 410, first connecting sleeve 411, first fixed rod 412, second connecting sleeve 413, clamping groove 414, limiting block 415;
[0033] Fixed plate 501, driving motor 502, second connecting shaft 503, connecting seat 504, straight gear 505, gear ring 506, belt 507;
[0034] First movable ring 601, second movable ring 602, second connecting frame 603, magnet 604, support block 605, fixing ring 606, arc plate 607, blocking block 608, metal block 609, first mating block 610, second mating block 611. Detailed Implementation
[0035] The following detailed description illustrates the specific implementation method:
[0036] Example
[0037] like Figures 1 to 10 As shown, a multi-stage screening device for plastic granules is disclosed, including a base 101, a first mounting frame 102 on the base 101, a rotatable second mounting frame 103 on the first mounting frame 102, a multi-stage screening mechanism on the second mounting frame 103, the multi-stage screening mechanism being fixedly connected to the second mounting frame 103, a feed inlet 107 on one side of the multi-stage screening mechanism, a telescopic rod between the feed inlet 107 and the base 101, with both ends of the telescopic rod hinged to the base 101 and the feed inlet 107 respectively; and a discharge assembly on the other side of the multi-stage screening mechanism.
[0038] The multi-stage screening mechanism comprises a screening cylinder 104 fixedly connected to the second matching frame 103, a plurality of groups of circular screens 301 arranged in the screening cylinder 104, wherein the diameters of the plurality of groups of circular screens 301 are different, but the axes of the plurality of groups of circular screens 301 overlap with the axis of the screening cylinder 104, the circular screen 301 at the center has the smallest diameter, the circular screen 301 at the outermost position has the largest diameter, a plurality of groups of filtering holes are arranged on each of the plurality of groups of circular screens 301, the filtering holes on the plurality of groups of circular screens 301 gradually decrease from inside to outside according to the positions of the circular screens 301, the circular screen 301 at the center has the largest filtering hole, and the circular screen 301 at the outermost position has the smallest filtering hole, the space between each two adjacent circular screens 301 and the space inside the circular screen 301 at the center are filtering cavities, the first auxiliary assembly is arranged in the filtering cavity at the center, the second auxiliary assembly is arranged in each of the remaining filtering cavities, the second sealing plate 305 is arranged on one side of the screening cylinder 104, the second sealing plate 305 is rotatably connected to the screening cylinder 104, the fixed plate 306 rotatable is arranged at the center of the second sealing plate 305, the plurality of groups of first clamping blocks 307 are arranged on the second sealing plate 305, and each of the plurality of groups of first clamping blocks 307 is clamped at one end of each of the plurality of groups of circular screens 301, the plurality of groups of first sealing plates 303 are arranged on the other side of the screening cylinder 104, the second fixed grooves 304 are arranged on each of the plurality of groups of first sealing plates 303, one end of each of the plurality of groups of circular screens 301 is clamped in each of the plurality of groups of second fixed grooves 304, each of the plurality of groups of first sealing plates 303 is annular, the rotatable second matching rings 408 are arranged between each two adjacent first sealing plates 303, the plurality of groups of first sealing plates 303 and the plurality of groups of second matching rings 408 are staggered with each other, the plurality of groups of first sealing plates 303 and the plurality of groups of second matching rings 408 form a complete circle, the outermost first sealing plate 303 is rotatably connected to the screening cylinder 104, and the plurality of groups of second fixed blocks 302 are fixedly connected to the inner walls of the plurality of groups of circular screens 301, wherein the plurality of groups of second fixed blocks 302 are annularly distributed on the circular screens 301, and the plurality of groups of second fixed blocks 302 are linearly distributed on the circular screens 301.
[0039] The first auxiliary assembly comprises a first connecting shaft 401, a plurality of groups of extension blocks 402 are arranged on the first connecting shaft 401, the plurality of groups of extension blocks 402 are arranged in a ring shape on the first connecting shaft 401, the plurality of groups of extension blocks 402 are arranged linearly on the first connecting shaft 401, a plurality of groups of beating blocks 403 are fixedly connected to the plurality of groups of extension blocks 402, the beating blocks 403 are close to the adjacent circular screen meshes 301 but do not contact the circular screen meshes 301, the plurality of groups of second fixing blocks 302 and the plurality of groups of beating blocks 403 are interlaced with each other, one end of the first connecting shaft 401 penetrates through the first sealing plate 303, the other end penetrates into the fixed plate 306, and the first connecting shaft 401 is rotatably connected with the first sealing plate 303 and the fixed plate 306.
[0040] The second auxiliary assembly comprises a first matching ring 404, a plurality of groups of limiting blocks 415 are arranged on the second sealing plate 305, the limiting blocks 415 are in an L shape, the first matching ring 404 is slidably clamped on the plurality of groups of limiting blocks 415, the first matching ring 404 can rotate on the plurality of groups of limiting blocks 415, a plurality of groups of clamping blocks 405 are fixedly connected to the first matching ring 404, a rectangular groove 406 is formed in each of the plurality of groups of clamping blocks 405, a plurality of groups of first connecting frames 407 are arranged on a second matching ring 408, a plurality of groups of extension blocks 402 and beating blocks 403 are fixedly connected to each of the plurality of groups of first connecting frames 407, the plurality of groups of extension blocks 402 and the plurality of groups of beating blocks 403 are linearly arranged on the first connecting frame 407, and each of the plurality of groups of beating blocks 403 is clamped in the adjacent rectangular groove 406.
[0041] The driving mechanism is arranged on the screening cylinder 104, and the driving mechanism comprises a fixed plate 306 fixedly connected to the screening cylinder 104, a driving motor 502 arranged on the fixed plate 306, a fixed end of the driving motor 502 fixedly connected to the fixed plate 306 by bolts, a second connecting shaft 503 arranged at an extending end of the driving motor 502, and an output end of the driving motor 502 fixedly connected to the second connecting shaft 503 through a coupling, two groups of connecting seats 504 arranged on the screening cylinder 104, the second connecting shaft 503 penetrating the two groups of connecting seats 504, the second connecting shaft 503 rotatably connected to the connecting seats 504, a straight gear 505 fixedly connected to the second connecting shaft 503, a tooth ring 506 fixedly connected to the second sealing plate 305, and the straight gear 505 engaged with the tooth ring 506. A belt 507 is arranged between the second connecting shaft 503 and the first connecting shaft 401, the first connecting shaft 401 is provided with a connecting assembly, the connecting assembly comprises two groups of first connecting sleeves 411 and two groups of second connecting sleeves 413, the two groups of first connecting sleeves 411 and the two groups of second connecting sleeves 413 are clamped on the first connecting shaft 401, the two groups of first connecting sleeves 411 and the two groups of second connecting sleeves 413 can form a ring, the two groups of first connecting sleeves 411 are fixedly connected by bolts, the two groups of second connecting sleeves 413 are fixedly connected to the first connecting shaft 401 by bolts, the first connecting shaft 401 is fixedly connected with a plurality of groups of second clamping blocks 410, clamping grooves 414 are arranged on the first connecting sleeves 411 and the second connecting sleeves 413, the plurality of groups of second clamping blocks 410 are respectively clamped in corresponding groups of clamping grooves 414, each group of second clamping blocks 410 is clamped in two groups of clamping grooves 414, one side of the first connecting sleeve 411 is in contact with the first sealing plate 303, and the other side is in contact with the second connecting sleeve 413, the first connecting sleeve 411 is fixedly connected with two groups of first fixing rods 412, a plurality of groups of third fixing grooves 409 are arranged on the second matching ring 408, and the plurality of groups of first fixing rods 412 are clamped in the plurality of groups of third fixing grooves 409.
[0042] The discharge assembly comprises a discharge box 106, a plurality of sets of matching grooves 204 are arranged in the discharge box 106, the plurality of sets of matching grooves 204 are arranged in up-down direction, the plurality of sets of matching grooves 204 are all provided with discharge ports 205, the inner walls of the matching grooves 204 are all inclined, the lowest points of the inner walls of the matching grooves 204 are located at the discharge ports 205, a plurality of sets of first sealing plates 303 are all provided with discharge valves 206, the plurality of sets of discharge valves 206 are respectively aligned with the plurality of sets of filtering cavities, the plurality of sets of matching grooves 204 are respectively aligned with the plurality of sets of discharge valves 206, a fixing frame 105 is arranged on the base 101, the fixing frame 105 is in sliding connection with the discharge box 106, and the fixing frame 105 and the discharge box 106 are both arranged in an inclined manner; a first fixing block 202 is fixedly connected to the discharge box 106, a first fixing groove 203 is arranged on the fixing frame 105, the first fixing block 202 is slidingly clamped in the first fixing groove 203, and a second air cylinder 201 is arranged on the fixing frame 105, the fixed end of the second air cylinder 201 is fixedly connected to the fixing frame 105, and the telescopic end of the second air cylinder 201 is fixedly connected to the first fixing block 202.
[0043] The screening drum 104 is provided with a matching discharge mechanism, the matching discharge mechanism comprises first movable rings 601 and second movable rings 602, the first movable rings 601 and the second movable rings 602 are respectively located at two ends of the first connecting shaft 401, a plurality of sets of magnets 604 are fixedly connected to the first movable rings 601 and the second movable rings 602, the first movable rings 601 and the second movable rings 602 are both in the shape of a circular ring, a plurality of sets of second connecting frames 603 are fixedly connected to the first movable rings 601 and the second movable rings 602, a support block 605 is arranged in the second movable ring 602, the support block 605 is located inside the second movable ring 602, the second movable ring 602 is slidingly clamped in the support block 605 at two ends, the second movable ring 602 can rotate on the support block 605, a fixed ring 606 is arranged outside the first movable ring 601, the second connecting frame 603 on the first movable ring 601 is slidingly clamped in the fixed ring 606, and the first movable ring 601 can rotate in the fixed ring 606, the first movable ring 601 and the corresponding second connecting frame 603 are both inside the fixed ring 606, wherein the second movable ring 602 is connected with the fixed plate 306, the first movable ring 601 is connected with the screening drum 104, two sets of second matching blocks 611 are fixedly connected to the fixed plate 306 and the screening drum 104, and four sets of first matching blocks 610 are slidingly clamped in the four sets of second matching blocks 611, wherein two sets of first matching blocks 610 are fixedly connected to the support block 605, and the remaining two sets of first movable rings 601 are fixedly connected to the fixed ring 606, a plurality of sets of plugging assemblies are arranged on the plurality of sets of second connecting frames 603, and the plurality of sets of plugging assemblies are respectively used for cooperation with a plurality of sets of plugging blocks 608.
[0044] The blocking assembly comprises an arc-shaped plate 607 located in the filter cavity, one side of the arc-shaped plate 607 is in contact with the first connecting frame 407, and the other side is not in contact with the corresponding circular screen 301, a plurality of groups of blocking blocks 608 are fixedly connected to the arc-shaped plate 607, the blocking blocks 608 can be worn in the filter holes, two groups of metal blocks 609 are fixedly connected to both sides of the arc-shaped plate 607, the metal blocks 609 are made of metal and can be attracted to magnetic substances, a plurality of groups of magnets 604 are fixedly connected to the plurality of groups of second connecting frames 603, and the plurality of groups of magnets 604 are aligned with the plurality of groups of metal blocks 609 two by two.
[0045] The feeding port 107 is fixedly connected to the fixed plate 306, and the feeding port 107 is in communication with one of the filter cavities.
[0046] The first matching frame 102 and the second matching frame 103 are both arc-shaped, and the first gas cylinder 108 is arranged between the first matching frame 102 and the second matching frame 103, the fixed end of the first gas cylinder 108 is connected to the first matching frame 102, the telescopic end of the first gas cylinder 108 is connected to the second matching frame 103, and the two ends of the first gas cylinder 108 are rotatably connected to the first matching frame 102 and the second matching frame 103 respectively.
[0047] The screening drum 104, the feeding port 107, the first gas cylinder 108, the telescopic rod, the second gas cylinder 201, the discharge valve 206, the circular screen 301 and the driving motor 502 are all common technical means for those skilled in the art, and their structures, connection modes and use modes are all known to those skilled in the art.
[0048] In specific implementation:
[0049] In use, the worker first pours the plastic particles to be screened into the feed inlet 107, through the feed inlet 107 into the multi-stage screening mechanism, then the worker starts the driving motor 502, the driving motor 502 output end drives the second connecting shaft 503 to rotate, at this time the second connecting shaft 503 rotates on the two groups of connecting seats 504, the second connecting shaft 503 drives the spur gear 505 to rotate, the spur gear 505 drives the gear ring 506 to rotate, the gear ring 506 drives a plurality of groups of circular screen meshes 301 to rotate, the second connecting shaft 503 rotates, at the same time through the belt 507 drives the first connecting shaft 401 to rotate, the first connecting shaft 401 drives the first auxiliary assembly and the second auxiliary assembly to rotate through the connecting assembly, since the circular screen meshes 301 are driven by gear meshing when rotating, the first auxiliary assembly and the second auxiliary assembly are driven by the belt 507 when rotating, so the rotating direction of the circular screen meshes 301 is different from the rotating direction of the first auxiliary assembly and the second auxiliary assembly, thereby achieving the purpose of quickly screening the plastic particles, while screening, the first air cylinder 108 is also started, and repeatedly expands and contracts, when the first air cylinder 108 extends, drives the second matching frame 103 to rotate, the second matching frame 103 drives the screening cylinder 104 to rotate, at this time the screening cylinder 104 is inclined, and the feed end is higher than the discharge end, after the screening cylinder 104 is inclined by a certain angle, the first air cylinder 108 is controlled to contract, drives the second matching frame 103 and the screening cylinder 104 to rotate, at this time the rotating direction of the second matching frame 103 and the screening cylinder 104 is just opposite to the previous one, at this time the feed end moves downward, and the discharge end moves upward, until the screening cylinder 104 is inclined by a certain angle, at this time the discharge end is higher than the feed end, reciprocate in this way, so that the screening cylinder 104 shakes, at this time the plastic particles in the screening cylinder 104 also move with the movement of the screening cylinder 104, can increase a moving direction for the plastic particles, so that the plastic particles in the screening cylinder 104 can move in multiple directions, thereby improving the screening efficiency;
[0050] When the plastic particles in the screening cylinder 104 are completely screened, the first air cylinder 108 is controlled to fully extend, so that the screening cylinder 104 is inclined, at this time the screening cylinder 104 is parallel to the discharge box 106, then the second air cylinder 201 is started, the extension end of the second air cylinder 201 extends, drives the first fixed block 202 to slide in the first fixed groove 203, the first fixed block 202 drives the discharge box 106 to slide on the fixed frame 105, until the second air cylinder 201 fully extends, at this time the discharge box 106 moves to contact with the screening cylinder 104, at this time the several groups of discharge valves 206 are respectively located in the corresponding matching grooves 204, and the matching discharge mechanism is started to make the corresponding circular screen 301 below present a plane, then the discharge valve 206 is started, the discharge valve 206 is opened, at this time the several groups of filtering cavities are respectively communicated with the corresponding matching grooves 204, at this time the plastic particles move to the matching grooves 204 through their own gravity, and the inner wall of the matching groove 204 is inclined, so the plastic particles will move to the discharge port 205, and then move out of the discharge box 106 through the discharge port 205, at this time the workers only need to place a collecting frame at the outlet end of the discharge port 205, so that the screened plastic particles can be collected, different particle sizes of particles will enter different matching grooves 204, so that the multi-stage screening of the plastic particles is completed, and during the screening, the situation that the filtering holes are blocked by the plastic particles during the screening, resulting in reduced screening efficiency, can be reduced, so that the screening efficiency is improved, and the screening quality meets the standard, and the mixed situation of different particle sizes of plastic particles due to incomplete screening does not occur.
[0051] When the multi-stage screening mechanism is in operation, the plastic particles will always be deposited below the circular screen 301. The fixed plate 306 drives the second sealing plate 305 to rotate, and the second sealing plate 305 drives a plurality of groups of circular screens 301 to rotate through the first clamping block 307. The circular screen 301 drives the corresponding first sealing plate 303 to rotate at the same time, and the first connecting shaft 401 drives a plurality of groups of extension blocks 402 and beating blocks 403 to rotate. At this time, the rotation direction of the first connecting shaft 401 is opposite to the rotation direction of the circular screen 301. The circular screen 301 drives the first connecting sleeve 411 and the second connecting sleeve 413 to rotate at the same time. The first connecting sleeve 411 drives the first fixed rod 412 to rotate. The first fixed rod 412 drives a plurality of groups of second matching rings 408 to rotate through cooperation with the third fixed groove 409. The second matching ring 408 rotates between the two groups of first sealing plates 303. The second matching ring 408 drives the corresponding first connecting frame 407, extension block 402 and beating block 403 to rotate, so that a plurality of groups of beating blocks 403 rotate in the corresponding circular screen 301. When the beating block 403 rotates, a plurality of groups of beating blocks 403 drive the corresponding clamping block 405 to rotate. The clamping block 405 drives the first matching ring 404 to rotate in a plurality of groups of limiting blocks 415. When the plastic particles move in the circular screen 301, the second fixed block 302 will slide the plastic particles to both sides of the second fixed block 302. Then the beating block 403 will beat the plastic particles between the two groups of second fixed blocks 302, and the plastic particles will be scattered. At the same time, it can prevent the plastic particles from accumulating at the bottom of the circular screen 301, so that the plastic particles move at high speed below the circular screen 301, improving the efficiency of screening. A plurality of groups of circular screens 301 cooperate with each other to screen the plastic particles. The plastic particles located at the center have the largest particle size. The plastic particles located in the screening cylinder 104 have smaller particle sizes. The particle size of the plastic particles in the central circular screen 301 decreases from the inside to the outside. The plastic particles filtered by the outermost circular screen 301 will fall into the screening cylinder 104. The plastic particles in the screening cylinder 104 will not be filtered again.
[0052] When the discharging mechanism is not in use, the arc-shaped plate 607 is magnetically attracted to the corresponding magnet 604 through the metal block 609, so that the metal block 609 is fixed in the specified position. When the arc-shaped plate 607 is not in use, the arc-shaped plate 607 is located on one side of the circular screen 301 and does not interfere with the normal screening of the plastic particles by the circular screen 301. When it is needed to be used, the staff rotates the first movable ring 601 and the second movable ring 602 by 90 degrees, and the first movable ring 601 and the second movable ring 602 drive the plurality of groups of second connecting frames 603 and magnets 604 to rotate. The first movable ring 601 rotates in the fixed ring 606, and the second movable ring 602 rotates on the support block 605. When the magnet 604 rotates, it is magnetically attracted to drive the corresponding metal block 609 to rotate. The plurality of groups of metal blocks 609 drive the blocking blocks 608 to rotate until the blocking blocks 608 move to the lowest end of the circular screen 301. At this time, the plurality of groups of blocking blocks 608 are aligned with the filter holes on the circular screen 301. Then the staff moves the support block 605 and the fixed ring 606 upward, driving the plurality of groups of magnets 604 and the plurality of groups of arc-shaped plates 607 to move upward, so that the arc-shaped plate 607 contacts the corresponding circular screen 301. At this time, the plurality of groups of blocking blocks 608 are clamped in the filter holes, and the plastic particles clamped in the filter holes are extruded. At the same time, the blocking blocks 608 fill the filter holes, so that the bottom surface of the circular screen 301 is an approximately smooth plane. At this time, the plastic particles cannot be clamped on the filter holes, and the plastic particles can be smoothly removed from the screening cylinder 104, reducing the number of plastic particles remaining in the screening cylinder 104 and reducing material waste. At the same time, the staff does not need to frequently clean the inside of the screening cylinder 104, which can effectively improve the work efficiency of screening.
[0053] The above is only an embodiment of the present application, and the common knowledge of specific structures and properties in the scheme is not described in detail. It should be noted that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be considered as the protection scope of the present application. These will not affect the effect and practicability of the present application.
Claims
1. A multi-stage plastics particle sizing apparatus, characterized by: The utility model provides a plastic particle screening device, including base, be provided with first cooperation frame on the base, be provided with rotatable second cooperation frame on the first cooperation frame, be provided with first pneumatic cylinder between the first cooperation frame with second cooperation frame, first pneumatic cylinder both ends respectively with first cooperation frame and rotatable connection of second cooperation frame, be provided with multistage screening mechanism for screening plastic particle on the second cooperation frame, One side of the multistage screening mechanism is provided with a feed inlet, and the feed inlet is connected with the base through an extension rod, and the extension rod is hinged at both ends on the feed inlet and the base. The other side of the multistage screening mechanism is provided with a discharge assembly.
2. The multi-stage plastic particle screening device of claim 1, wherein: The multistage screening mechanism includes a screening cylinder fixedly connected to the second cooperation frame, a plurality of groups of circular screens arranged inside the screening cylinder, the plurality of groups of circular screens arranged from inside to outside, and a plurality of groups of filter holes opened on the plurality of groups of circular screens, the filter holes of the circular screen closer to the center having a larger diameter, and the filter holes of the circular screen closer to the outside having a smaller diameter. The space between every two adjacent groups of circular screens and inside the circular screen at the center is a filter cavity, a first auxiliary assembly is arranged in the filter cavity at the center, and a second auxiliary assembly is arranged in the remaining filter cavities. The plurality of groups of circular screens have different diameters, and the axes of the plurality of groups of circular screens overlap with the axis of the screening cylinder. The inner walls of the plurality of groups of circular screens are fixedly connected with a plurality of groups of second fixing blocks, and the cross section of the second fixing block is triangular.
3. A multi-stage plastics particle sizing apparatus as claimed in claim 2, wherein: One side of the screening cylinder is provided with a second sealing plate rotatably connected to the screening cylinder, a fixed plate rotatably arranged at the center of the second sealing plate, a plurality of groups of first clamping blocks arranged on the second sealing plate, and one end of each group of circular screens clamped in each group of first clamping blocks. The other side of the screening cylinder is provided with a plurality of groups of first sealing plates, one end of each group of circular screens clamped in each group of first sealing plates, a second cooperation ring rotatably arranged between every two adjacent groups of first sealing plates, and the plurality of groups of first sealing plates and the plurality of groups of second cooperation rings interlaced with each other. The outermost first sealing plate is rotatably connected to the screening cylinder.
4. A multi-stage plastics particle sizing apparatus as claimed in claim 3, wherein: The first auxiliary assembly includes a first connecting shaft, the striking block is close to the adjacent circular screen, and the first connecting shaft passes through the first sealing plate and the fixed plate. The second auxiliary assembly includes a first cooperation ring, a plurality of groups of limiting blocks arranged on the second sealing plate, the first cooperation ring slidingly clamped in the plurality of groups of limiting blocks, a plurality of groups of clamping blocks fixedly connected to the first cooperation ring, and a rectangular slot opened in each group of clamping blocks. A plurality of groups of first connecting frames are arranged on the second cooperation ring.
5. A multi-stage plastics particle sizing apparatus as claimed in claim 4, wherein: A plurality of groups of extension blocks and striking blocks are fixedly connected to the plurality of groups of first connecting frames and the first connecting shaft, and the plurality of groups of second fixing blocks and the plurality of groups of striking blocks are interlaced with each other. One group of striking blocks on the first connecting frame is clamped in the corresponding rectangular slot.
6. A multi-stage plastics particle sizing apparatus as claimed in claim 5, wherein: The discharge assembly comprises a discharge box, a plurality of sets of matching grooves are arranged in the discharge box, and discharge ports are formed in the plurality of sets of matching grooves; the inner walls of the matching grooves are inclined; A plurality of sets of first sealing plates are arranged on the plurality of sets of matching grooves, and a plurality of sets of discharge valves are arranged on the plurality of sets of first sealing plates; the plurality of sets of discharge valves are aligned with the plurality of sets of matching grooves, respectively; A fixing frame is arranged on the base, the fixing frame is in sliding connection with the discharge box, a first fixing block is fixedly connected to the discharge box, the first fixing block is in sliding clamping on the fixing frame, a second air cylinder is arranged on the fixing frame, and the telescopic end of the second air cylinder is fixedly connected with the first fixing block.
7. A multi-stage plastics particle sizing apparatus as claimed in claim 6, wherein: A driving mechanism is arranged on the screening cylinder, the driving mechanism comprises a fixed plate, the fixed plate is fixedly connected to the screening cylinder, a driving motor is arranged on the fixed plate, a second connecting shaft is arranged at the extending end of the driving motor, two sets of connecting seats are arranged on the screening cylinder, and the second connecting shaft is arranged in the two sets of connecting seats; A spur gear is fixedly connected to the second connecting shaft, a gear ring is fixedly connected to the second sealing plate, and the spur gear is in meshing connection with the gear ring; A belt is arranged between the second connecting shaft and the first connecting shaft, and a connecting assembly is arranged on the first connecting shaft.
8. A multi-stage plastics particle sizing apparatus as claimed in claim 7, wherein: The connecting assembly comprises two sets of first connecting sleeves and two sets of second connecting sleeves, the two sets of first connecting sleeves and the two sets of second connecting sleeves are clamped on the first connecting shaft, A plurality of sets of second clamping blocks are fixedly connected to the first connecting shaft, the first connecting sleeve and the second connecting sleeve are clamped on the plurality of sets of second clamping blocks, the two sets of first connecting sleeves are fixedly connected, and the two sets of second connecting sleeves are fixedly connected to the first connecting shaft; Two sets of first fixing rods are fixedly connected to the first connecting sleeve, and the two sets of first fixing rods are clamped on the plurality of sets of second matching rings.
9. A multi-stage plastics particle sizing apparatus as claimed in claim 8, wherein: A matching discharge mechanism is arranged in the screening cylinder, the matching discharge mechanism comprises a first movable ring and a second movable ring, a plurality of sets of second connecting frames and a plurality of sets of magnets are fixedly connected to the first movable ring and the second movable ring; A supporting block is arranged on the second movable ring, and the two ends of the second movable ring are in sliding clamping in the supporting block; A fixed ring is arranged on the first movable ring, and the second connecting frame on the first movable ring is in sliding clamping in the fixed ring; The second movable ring is connected with the fixed plate, the first movable ring is connected with the screening cylinder, two sets of second matching blocks are fixedly connected to the fixed plate and the screening cylinder, and a first matching block is in sliding clamping in four sets of second matching blocks, wherein two sets of first matching blocks are fixedly connected to the supporting block, and the remaining two sets of first movable rings are fixedly connected to the fixed ring; A plurality of sets of blocking assemblies are arranged between the plurality of sets of second connecting frames, and the plurality of sets of blocking assemblies are matched with the plurality of sets of circular screens, respectively.
10. A multi-stage plastics particle sizing apparatus as claimed in claim 9, wherein: The blocking assembly comprises an arc-shaped plate, the arc-shaped plate is located in a filtering cavity, a plurality of sets of blocking blocks are fixedly connected to the arc-shaped plate, and the blocking blocks are arranged in the filtering holes; Two sets of metal blocks are fixedly connected to the two sides of the arc-shaped plate, and the plurality of sets of magnets are aligned with the plurality of sets of metal blocks, respectively.