Plastic particle screening device for runway
By designing a plastic particle screening device with adjustable sieve hole size, the problem of poor adaptability of traditional devices was solved, and the screening efficiency and runway quality were improved.
Patent Information
- Application Number
- CN202511240979.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-02
- Publication Date
- 2025-10-10
AI Technical Summary
Traditional plastic particle screening devices are difficult to flexibly adapt to different particle size requirements, resulting in uneven screening, affecting the quality and service life of the runway.
A plastic particle screening device with adjustable sieve hole size is designed. The spacing of the connecting ropes is changed by rotating the shaft and the worm gear mechanism to achieve convenient adjustment of the sieve hole size. The vibration and material guiding mechanism are combined to ensure the screening effect.
It realizes the flexible adjustment of the sieve hole size, improves the screening efficiency and applicability, ensures the uniformity of plastic particles, and extends the service life of the runway.
Smart Images
Figure CN120755997A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the field of plastic particle screening devices, in particular to a plastic particle screening device for running tracks. BACKGROUND
[0002] The plastic track is also called the track and field track, which is composed of polyurethane prepolymer, mixed polyether, waste tire rubber, EPDM rubber particles or PU particles, pigments, additives and fillers. The screening of the plastic particles of the plastic track before laying is a crucial process. The uniformity of the particle size directly determines the physical properties and service life of the final track. If unqualified large particles or impurities are mixed in, it is easy to cause the unevenness of the track surface, uneven elasticity, significantly accelerate the wear and aging, and shorten the service life. Therefore, ensuring the accurate screening of the plastic particles before laying is the key link to ensure the quality of the track. However, the traditional screening device has problems such as being difficult to flexibly adapt to different particle size requirements. Therefore, we design a screening device for conveniently screening plastic particles of different sizes. SUMMARY
[0003] The application provides a plastic particle screening device for running tracks to solve the defects in the prior art.
[0004] The application is implemented through the following technical solutions: A plastic particle screening device for running tracks, comprising a box body, a screening box is arranged in the box body, a plurality of supporting legs are fixedly installed on the box body, a feeding port is formed in the top of the box body, a plurality of discharge ports are formed in the box body, a discharge port is formed in the bottom of the box body, a vibrating mechanism for vibrating the screening box is arranged in the box body, the screening box is annular and has an internal cavity, rotating shafts are rotatably installed around the screening box cavity, a plurality of annular grooves are formed in the rotating shafts, the annular grooves on the opposite rotating shafts are one-to-one corresponding, a same connecting rope is arranged in the corresponding annular grooves, an annular through groove is formed in the box body, the connecting ropes pass through the through groove, and the connecting ropes form a screen in a staggered manner; the annular grooves are obliquely arranged, the spacing between adjacent annular grooves is the same in the axial direction of the rotating shaft, and the oblique annular grooves can make the connecting ropes move at equal distances; one end of one of the rotating shafts is fixedly installed with a coaxial worm wheel, a worm is arranged in meshing connection on one side of the worm wheel, the worm is rotatably installed on the screening box and extends to the outside, coaxial bevel gears are fixedly installed on the rotating shafts, the adjacent end portions of the two rotating shafts are connected through the bevel gears, the corresponding two bevel gears are in meshing connection, and the opposite rotating shafts rotate in the same direction.
[0005] The plastic particle screening device for running tracks as described above, wherein the vibrating mechanism comprises a vibrating motor, a plurality of first spring telescopic rods are fixedly installed in the box body, the screening box is fixedly installed on the first spring telescopic rods, and a material guiding mechanism for guiding the plastic particles out of the discharge port is arranged in the box body.
[0006] The runway plastic particle screening device has a plurality of second spring telescopic rods fixedly installed in the box body, a same material guiding hopper fixedly installed on the second spring telescopic rods, a gear rack fixedly installed on one of the second spring telescopic rods, a gear fixedly installed on the worm and capable of engaging with the gear rack, and the gear is not engaged with the gear rack in a normal state.
[0007] The runway plastic particle screening device has a plurality of second spring telescopic rods fixedly installed in the box body, a same material guiding hopper fixedly installed on the second spring telescopic rods, a gear rack fixedly installed on one of the second spring telescopic rods, a gear fixedly installed on the worm and capable of engaging with the gear rack, and the gear is not engaged with the gear rack in a normal state.
[0008] The runway plastic particle screening device has a plurality of second spring telescopic rods fixedly installed in the box body, a same material guiding hopper fixedly installed on the second spring telescopic rods, a gear rack fixedly installed on one of the second spring telescopic rods, a gear fixedly installed on the worm and capable of engaging with the gear rack, and the gear is not engaged with the gear rack in a normal state.
[0009] The runway plastic particle screening device has a plurality of second spring telescopic rods fixedly installed in the box body, a same material guiding hopper fixedly installed on the second spring telescopic rods, a gear rack fixedly installed on one of the second spring telescopic rods, a gear fixedly installed on the worm and capable of engaging with the gear rack, and the gear is not engaged with the gear rack in a normal state.
[0010] The runway plastic particle screening device has a plurality of second spring telescopic rods fixedly installed in the box body, a same material guiding hopper fixedly installed on the second spring telescopic rods, a gear rack fixedly installed on one of the second spring telescopic rods, a gear fixedly installed on the worm and capable of engaging with the gear rack, and the gear is not engaged with the gear rack in a normal state.
[0011] The runway plastic particle screening device has a plurality of second spring telescopic rods fixedly installed in the box body, a same material guiding hopper fixedly installed on the second spring telescopic rods, a gear rack fixedly installed on one of the second spring telescopic rods, a gear fixedly installed on the worm and capable of engaging with the gear rack, and the gear is not engaged with the gear rack in a normal state.
[0012] The runway plastic particle screening device has a plurality of second spring telescopic rods fixedly installed in the box body, a same material guiding hopper fixedly installed on the second spring telescopic rods, a gear rack fixedly installed on one of the second spring telescopic rods, a gear fixedly installed on the worm and capable of engaging with the gear rack, and the gear is not engaged with the gear rack in a normal state. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and all other embodiments obtained by a person of ordinary skill in the art without creative effort based on the embodiments in the present application shall fall within the protection scope of the present application.
[0014] Figure 1 is a structural schematic diagram of a screening box; Figure 2 is a mounting schematic diagram of a brush plate; Figure 3 is Figure 2 A view of Figure 4 is a mounting schematic diagram of a guide plate; Figure 5 is Figure 4 B view of
[0015] Reference signs: 2, support leg, 3, feeding port, 4, discharging port, 5, discharging port, 9, box body, 10, screening box, 11, rotating shaft, 12, annular groove, 13, connecting rope, 14, worm wheel, 15, worm, 16, bevel gear, 17, through groove, 20, support rod, 21, driving motor, 22, vertical shaft, 23, annular cover, 24, connecting cloth, 25, brush plate, 31, second spring telescopic rod, 32, guide hopper, 33, rack, 34, gear, 40, pressing plate, 50, hand wheel, 60, vibration motor, 61, first spring telescopic rod, 70, guide plate, 71, tension spring, 72, push rod. DETAILED DESCRIPTION
[0016] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and all other embodiments obtained by a person of ordinary skill in the art without creative effort based on the embodiments in the present application shall fall within the protection scope of the present application.
[0017] A plastic particle screening device for a runway, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, including box 9, box 9 is provided with screening box 10, box 9 is fixedly installed several support legs 2, the top of box 9 is provided with feed inlet 3, several discharge ports 4 are opened on the box 9, the bottom of box 9 is provided with discharge port 5, the vibration mechanism for vibrating the screening box 10 is arranged in the box 9, the screening box 10 is annular, and the inside is provided with a cavity, the rotating shaft 11 is rotatably installed around the cavity of the screening box 10, the both ends of the rotating shaft 11 are rotatably connected with the inner wall of the screening box 10 through the bearing with seat, several annular grooves 12 are opened on the rotating shaft 11, the annular grooves 12 on the both ends of the rotating shaft 11 are symmetrically distributed about the perpendicular axis of the rotating shaft 11, the corresponding annular grooves 12 in the opposite two rotating shafts 11 one by one, the same connecting rope 13 is arranged in the corresponding annular grooves 12, the annular through slot 17 is opened on the box 9, the connecting rope 13 passes through the through slot 17, the both ends of the connecting rope 13 are wound in the annular groove 12, and the end is fixedly connected with the inner wall of the annular groove 12, the several connecting ropes 13 are staggered to form a screen; the annular grooves 12 are arranged obliquely, the spacing of adjacent annular grooves 12 is the same in the axial direction of the rotating shaft 11, the inclination angles of the annular grooves 12 on the opposite two rotating shafts 11 are the same, and the inclined annular grooves 12 can make the connecting rope 13 move equidistantly; one end of one of the rotating shafts 11 is fixedly installed with a coaxial worm wheel 14, the worm wheel 14 is meshingly connected with a worm 15 on one side, the worm 15 is rotatably installed on the screening box 10 and extends to the outside, the outer periphery of the worm 15 is rotatably connected with the inner wall of the reserved hole of the screening box 10 through the bearing, the coaxial bevel gears 16 are fixedly installed on the rotating shaft 11, the adjacent ends of the two rotating shafts 11 are connected through the bevel gears 16, the corresponding two bevel gears 16 are meshingly connected, and the rotating directions of the opposite two rotating shafts 11 are the same. The present application has the advantages of simple structure, ingenious design, changing the spacing between the corresponding connecting ropes 13 by rotating the rotating shaft 11, thereby changing the size of the screen holes formed by the connecting ropes 13, realizing the convenient adjustment and control of the screen hole size, adjusting the size of the plastic particles to be screened according to the needs, effectively solving the problems of complicated replacement and poor adaptability of the traditional fixed screen, flexible operation, stronger applicability, meeting the actual needs, and being suitable for promotion.When using the device, the plastic particles to be screened are put into the box 9 from the feeding port 3, and then fall on the screen of the screening box 10, and then the screening box 10 and the screen are vibrated by the vibration mechanism, the particles smaller than the screen holes on the screen pass through the screen holes and are discharged from the discharge port 5, and the particles larger than the screen holes are vibrated to the edge of the screening box 10 and then fall, and then are discharged from the discharge port 4; when it is needed to adjust the size of the screen holes on the screen, the worm 15 is rotated, the worm 15 drives the worm wheel 14 and the corresponding rotating shaft 11 to rotate, the adjacent rotating shafts 11 are driven by the bevel gears 16 to rotate together, and then the two ends of the connecting ropes 13 move in the corresponding annular grooves 12, due to the inclined arrangement of the annular grooves 12, the winding positions of the connecting ropes 13 in the annular grooves 12 are axially displaced, the distance between the two adjacent connecting ropes 13 is changed, and the size of the screen holes of the screen formed by the staggered connecting ropes 13 is changed, and by controlling the rotating direction of the worm 15, the connecting ropes 13 can be controlled to move away from each other or move close to each other, and the corresponding screen holes are enlarged or reduced.
[0018] Specifically, as shown in Figure 2 、 Figure 4 The vibration mechanism of the embodiment includes a vibration motor 60, a plurality of first spring telescopic rods 61 are fixedly installed in the box 9, the screening box 10 is fixedly installed on the first spring telescopic rods 61, the fixed end of the first spring telescopic rod 61 is fixedly connected to the inner wall of the box 9, the movable end of the first spring telescopic rod 61 is fixedly connected to the screening box 10, and a material guiding mechanism for guiding the plastic particles out of the discharge port 4 is installed in the box 9. The vibration motor 60 is powered, the vibration motor 60 drives the screening box 10 to vibrate, and under the limitation of the first spring telescopic rod 61, the screening box 10 realizes reciprocating vibration up and down, the screening box 10 vibrates to throw the material, the particles smaller than the screen holes pass through the screen holes, the particles larger than the screen holes are vibrated to the edge of the screening box 10 and then fall, and then are discharged from the discharge port 4 under the guidance of the material guiding mechanism.
[0019] Specifically, as shown in Figure 2 、 Figure 4As shown, several second spring telescopic rods 31 are fixedly installed in the box 9, and a same material guide hopper 32 is fixedly installed on the second spring telescopic rod 31. The fixed end of the second spring telescopic rod 31 is fixedly connected to the inner wall of the box 9, and the movable end of the second spring telescopic rod 31 is fixedly connected to the material guide hopper 32 through a connecting rod. A rack 33 is fixedly installed on one of the second spring telescopic rods 31, and a gear 34 capable of engaging with the rack 33 is fixedly installed on the worm 15. The gear 34 is coaxially arranged with the worm 15, and in a normal state, the gear 34 does not engage with the rack 33. When the screen formed by the connecting ropes 13 is blocked, the plastic particles are accumulated in the screen and the material guide hopper 32, so that the material guide hopper 32 moves downward due to gravity, the second spring telescopic rod 31 is elongated, the rack 33 is driven to move downward until it engages with the gear 34, thereby driving the gear 34 and the worm 15 to rotate forward, the worm 15 drives the worm wheel 14 to rotate together, and then drives the rotating shaft 11 to rotate through the transmission of the bevel gear 16, so that the distance between the connecting ropes 13 in the same direction is increased, and then the screen hole of the screen formed by the connecting ropes 13 is increased, and the plastic particles can fall from the increased screen hole, so that the automatic unblocking of the screen is realized. When there is no longer a large amount of plastic particles accumulated in the screen and the material guide hopper 32, the material guide hopper 32 is automatically reset under the action of the second spring telescopic rod 31, and drives the rack 33 to move upward, and then the rack 33 drives the gear 34 to rotate reversely until it is separated, thereby driving all the rotating shafts 11 to rotate reversely to reset, so that the distance between the connecting ropes 13 returns to the original state, and the screen hole of the screen is automatically restored to the original state.
[0020] Further, as shown in Figure 2 、 Figure 4 , one side of the rotating shaft 11 of the embodiment is provided with a pressing plate 40, and the pressing plate 40 is fixedly installed in the cavity of the screening box 10. One side of the pressing plate 40 is in contact with the rotating shaft 11. The pressing plate 40 can limit the connecting rope 13 in the corresponding annular groove 12, so as to avoid the connecting rope 13 from falling off the annular groove 12.
[0021] Further, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 , a hand wheel 50 is fixedly installed on the worm 15. Rotating the worm 15 through the hand wheel 50 is more convenient and labor-saving.
[0022] Further, as shown in Figure 2As shown, the box 9 of the embodiment is fixedly installed with a support rod 20, the support rod 20 is fixedly installed with a driving motor 21, the output shaft of the driving motor 21 is fixedly installed with a coaxial vertical shaft 22, the vertical shaft 22 is fixedly installed with a brush plate 25, the brush plate 25 is provided with a brush, the brush on the brush plate 25 is in contact with the screen formed by the connecting rope 13; the material guiding mechanism comprises a ring cover 23, the ring cover 23 is fixedly installed in the box 9, the ring cover 23 is connected with the screening box 10 through a ring-shaped connecting cloth 24, the outer periphery of the top end of the connecting cloth 24 is fixedly connected with the screening box 10, the outer periphery of the bottom end of the connecting cloth 24 is fixedly connected with the outer periphery of the top end of the ring cover 23, the bottom end of the ring cover 23 is fixedly connected with the inner wall of the box 9, in the embodiment, the four peripheries of the box 9 are respectively provided with discharge ports 4. The driving motor 21 is powered, the driving motor 21 drives the vertical shaft 22 to rotate, thereby driving the brush plate 25 to revolve, the brush on the brush plate 25 pushes the plastic particles on the screen, so that the plastic particles smaller than the screen holes of the screen are more easily passed through the screen holes, the plastic particles larger than the screen holes are pushed to the edge of the screen, finally falling on the connecting cloth 24 and the ring cover 23 around the four peripheries of the screening box 10, and finally discharged from the discharge ports 4; when the vibrating mechanism drives the screening box 10 to vibrate, the flexibility of the connecting cloth 24 will not cause the screening box 10 to interfere with the ring cover 23.
[0023] Further, as shown in the drawings, Figure 4 The material guiding mechanism of the embodiment comprises hand guiding plates 70, the two sides of the box 9 are respectively hingedly connected with the guiding plates 70, the front and back sides of the guiding plates 70 are in sliding contact with the inner wall of the box 9, the guiding plates 70 are located on one side of the discharge ports 4, in the embodiment, the left and right sides of the box 9 are respectively provided with discharge ports 4, the front and back sides of the screening box 10 are in sliding contact with the inner wall of the box 9, a plurality of tension springs 71 are arranged between the guiding plates 70 and the box 9, one end of the tension spring 71 is fixedly connected with the inner wall of the box 9, the other end of the tension spring 71 is fixedly connected with the guiding plate 70, the two guiding plates 70 are separated from each other under the action of the tension spring 71, a push rod 72 is fixedly installed on the second spring telescopic rod 31, one end of the push rod 72 abuts against the guiding plate 70, the other end of the push rod 72 is fixedly connected with the movable end of the second spring telescopic rod 31. When the second spring telescopic rod 31 is elongated, the push rod 72 will move downward, thereby pushing the guiding plate 70 to rotate along the hinged shaft, the tension spring 71 is stretched, until the top ends of the two guiding plates 70 abut against each other, at this time, the plastic particles falling from the screen will be intercepted by the guiding plate 70, and finally discharged from the discharge ports 4, avoiding the plastic particles blocking the screen falling from the screen after cleaning from falling through the discharge port 5 and mixing with the screened plastic particles; when the second spring telescopic rod 31 is reset, the push rod 72 is also reset, the guiding plate 70 is automatically reset under the action of the tension spring 71.
[0024] Further, as shown in the drawings, Figure 2 , Figure 4As shown, the inner periphery of the top of the screening box 10 is arranged to be inclined. The inner periphery of the top of the screening box 10 is arranged to be inclined so as to facilitate the plastic particles that cannot pass through the screen to move to the edge of the top of the screening box 10 and fall off.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A plastic particle screening device for a runway, comprising a box (9), a screening box (10) provided in the box (9), a plurality of support legs (2) fixedly mounted on the box (9), a feed inlet (3) provided at the top of the box (9), a plurality of discharge openings (4) provided on the box (9), a discharge opening (5) provided at the bottom of the box (9), a vibration mechanism for vibrating the screening box (10) provided in the box (9), and characterized in that: The screening box (10) is annular and has a cavity inside. Rotating shafts (11) are rotatably installed around the cavity of the screening box (10). Several annular grooves (12) are respectively opened on the rotating shafts (11). The annular grooves (12) on the two opposite rotating shafts (11) correspond to each other one by one. The corresponding annular grooves (12) are provided with the same connecting rope (13). An annular through-groove (17) is opened on the box body (9). The connecting rope (13) passes through the through-groove (17). Several connecting ropes (13) are staggered to form a screen. The annular grooves (12) are inclined, and the spacing between adjacent annular grooves (12) is at the rotating shaft (11). The axial directions of the two rotating shafts (11) are the same, and the inclined annular groove (12) can make the connecting rope (13) produce equidistant movement; a coaxial worm wheel (14) is fixedly installed at one end of one of the rotating shafts (11), and a worm (15) is meshed with one side of the worm wheel (14), and the worm (15) is rotatably mounted on the screening box (10) and extends to the outside. Coaxial bevel gears (16) are fixedly installed on the rotating shafts (11), and the adjacent ends of the two rotating shafts (11) are connected by the bevel gears (16). The corresponding two bevel gears (16) are meshed with each other, and the two relative rotating shafts (11) rotate in the same direction.
2. The plastic particle screening device for a runway according to claim 1, characterized in that: The vibration mechanism includes a vibration motor (60), a plurality of first spring telescopic rods (61) fixedly installed in the box body (9), a screening box (10) fixedly installed on the first spring telescopic rods (61), and a material guide mechanism for guiding plastic particles out of the discharge port (4) installed in the box body (9).
3. The plastic particle screening device for a runway according to claim 2, characterized in that: A plurality of second spring telescopic rods (31) are fixedly installed in the box body (9), and a same guide hopper (32) is fixedly installed on the second spring telescopic rods (31), a rack (33) is fixedly installed on one of the second spring telescopic rods (31), and a gear (34) capable of meshing with the rack (33) is fixedly installed on the worm (15), and the gear (34) is not meshed with the rack (33) in a normal state.
4. The plastic particle screening device for a runway according to claim 1, characterized in that: A pressing plate (40) is provided on one side of the rotating shaft (11), and the pressing plate (40) is fixedly installed in the cavity of the screening box (10), and one side of the pressing plate (40) is in contact with the rotating shaft (11).
5. The plastic particle screening device for a runway according to claim 1, characterized in that: A hand wheel (50) is fixedly mounted on the worm (15).
6. The plastic particle screening device for a runway according to claim 3, characterized in that: A support rod (20) is fixedly mounted on the box body (9), a driving motor (21) is fixedly mounted on the support rod (20), a coaxial vertical shaft (22) is fixedly mounted on the output shaft of the driving motor (21), a brush plate (25) is fixedly mounted on the vertical shaft (22), a brush is provided on the brush plate (25), and the brush on the brush plate (25) contacts and cooperates with the screen formed by the connecting rope (13); the material guiding mechanism includes an annular cover (23), the annular cover (23) is fixedly mounted in the box body (9), and the annular cover (23) is connected to the screening box (10) through an annular connecting cloth (24).
7. The plastic particle screening device for a runway according to claim 3, characterized in that: The material guiding mechanism comprises a material guiding plate (70), and the material guiding plates (70) are hinged on both sides of the box body (9). The front and rear sides of the material guiding plate (70) are in sliding contact with the inner wall of the box body (9). The material guiding plate (70) is located on one side of the discharge port (4). The front and rear sides of the screening box (10) are in sliding contact with the inner wall of the box body (9). Several tension springs (71) are provided between the material guiding plate (70) and the box body (9). The two material guiding plates (70) are separated from each other under the action of the tension springs (71). Push rods (72) are fixedly installed on the second spring telescopic rod (31), and one end of the push rod (72) rests on the material guiding plate (70).
8. The plastic particle screening device for a runway according to claim 1, characterized in that: The inner circumference of the top of the screening box (10) is inclined.