Granulating systems for the production of plastic granules

Abstract

The present application relates to the technical field of granulation production, and provides a granulation system for producing plastic granules, including a plastic melting device, a granule forming device, a granule cooling device and a dehydration and screening device arranged in sequence, the dehydration and screening device including a vibrating conveyor plate, a collecting hopper, a collecting tank and a drying mechanism, the vibrating conveyor plate is arranged at an angle, the inlet end of the vibrating conveyor plate is lower than the outlet end of the vibrating conveyor plate, and the vibrating conveyor plate is provided with a vibrating conveying motor; the vibrating conveyor plate is provided with a permeable mesh plate and a screening mesh plate in sequence along the conveying direction, the collecting hopper is arranged at the bottom of the vibrating conveyor plate and the inlet end of the collecting hopper is directly opposite to the screening mesh plate, and the outlet end of the collecting hopper is connected to the inlet end of the drying mechanism; the collecting tank is arranged on one side of the vibrating conveyor plate, and the outlet end of the vibrating conveyor plate is connected to the inlet end of the collecting tank. The granulation system for producing plastic granules of the present application can improve the production efficiency of plastic granules.

Description

Technical Field

[0001] The present application relates to the technical field of granulation production, and in particular to a granulation system for producing plastic granules. Background Art

[0002] In the extrusion industry, the plastic granulation system refers to a system that makes mixed plastics into particles. Its working principle is to use the physical and chemical properties of plastic materials to make particles of specific size and shape under appropriate temperature, pressure and rotation speed through cooling water or air cooling.

[0003] In the prior art, plastic granulation mainly includes a plastic melting device, a particle forming device and a particle cooling device. The recycled waste plastic is heated to a molten state by the plastic melting device, then transferred to the particle forming device for cutting into particles, and then cooled by the particle cooling device to obtain plastic particles.

[0004] When plastic particles are formed, some plastic particles tend to stick together and form agglomerates (hereinafter referred to as agglomerated plastic particles). The agglomerates may block the equipment feed port or damage equipment parts during the subsequent processing and transfer process. The usual practice is to use mechanical stirring to stir the plastic particles to break up the agglomerates. However, in actual operation, when stirring the agglomerates, some agglomerates are often not broken up or broken up insufficiently due to inadequate stirring. They need to be manually screened out later, which reduces production efficiency. Therefore, further improvement is needed. Summary of the invention

[0005] In order to improve the production efficiency of plastic particles, the present application provides a granulation system for producing plastic particles.

[0006] The granulation system for producing plastic granules provided in this application adopts the following technical solutions:

[0007] The granulation system for producing plastic particles comprises a plastic melting device, a particle forming device, a particle cooling device and a dehydration and screening device which are arranged in sequence. The dehydration and screening device comprises a vibrating conveying plate, a collecting hopper, a collecting tank and a drying mechanism. The inlet end of the vibrating conveying plate is connected to the outlet end of the particle cooling device. The vibrating conveying plate is arranged at an angle. The inlet end of the vibrating conveying plate is lower than the outlet end of the vibrating conveying plate. The vibrating conveying plate is provided with a vibrating conveying motor. The vibrating conveying plate is provided with a permeable mesh plate and a screening mesh plate in sequence along the conveying direction. The collecting hopper is arranged at the bottom of the vibrating conveying plate and the inlet end of the collecting hopper is opposite to the screening mesh plate. The outlet end of the collecting hopper is connected to the inlet end of the drying mechanism. The collecting tank is arranged at one side of the vibrating conveying plate, and the outlet end of the vibrating conveying plate is connected to the inlet end of the collecting tank.

[0008] By adopting the above technical scheme, through the setting of a vibrating conveyor plate, a collecting hopper and a collecting pool, the plastic particles are sent to the vibrating conveyor plate after cooling, and the vibrating conveying motor is turned on to force the vibrating conveyor plate to vibrate to convey the plastic particles, so that the plastic particles are conveyed and vibrated at the same time. When the plastic particles pass through the permeable mesh plate, the moisture in the plastic particles flows into the collecting pool through the permeable mesh plate for dehydration. At the same time, during the vibration of the vibrating conveyor plate, the plastic particles can be broken up to reduce the possibility of agglomeration of the plastic particles. The broken up plastic particles fall from the screening mesh plate to the collecting hopper, and are transferred from the collecting hopper to the drying mechanism for drying; the particle clusters that are not broken up fall from the outlet end of the vibrating conveyor plate to the collecting pool, which has a screening effect and greatly improves the working efficiency.

[0009] Optionally, the permeable mesh plate has a raised portion on the side away from the screening mesh plate, and the raised portion gradually increases in height from the side close to the permeable mesh plate to the side away from the permeable mesh plate, and a collection area is formed between the raised portion and the permeable mesh plate; a water collecting pool is provided at the bottom of the vibrating conveyor plate, and the water collecting pool is provided with a feed hood, and the feed hood is provided in the collection area, and the feed hood is connected to a feed pipe, the inlet end of the feed pipe is connected to the outlet end of the particle cooling device, and the outlet end of the feed pipe passes through the feed hood and is connected to the collection area.

[0010] By adopting the above-mentioned technical solution and setting the warping part, after the plastic particles are fed in from the inlet end of the vibrating conveyor plate, the warping part can block the plastic particles, thereby reducing the possibility of the plastic particles falling out from the inlet end of the vibrating conveyor plate and improving the stability of the plastic particle conveying.

[0011] Optionally, the vibrating conveyor plate is provided with a guide hopper, the inlet end of the guide hopper is connected to the outlet end of the vibrating conveyor plate, and the outlet end of the guide hopper is connected to the inlet end of the collecting pool; a breaking up component for breaking up the particle clusters is provided in the collecting pool.

[0012] By adopting the above-mentioned technical solution and setting up the breaking-up component, after the particle clusters that have not been broken up by the vibrating conveyor plate fall into the collection pool, the breaking-up component can break up the particle clusters, thereby reducing the possibility of the particle clusters clogging the equipment feed port or damaging equipment components during subsequent processing and transfer.

[0013] Optionally, the breaking up component includes an extrusion frame, a flow-reducing member and a driving member. The extrusion frame is slidably installed in the collecting pool and is arranged in plurality at intervals. Two adjacent extrusion frames form a falling channel for the particle cluster to fall. An extrusion roller is installed on the inner wall of each extrusion frame. An extrusion zone is formed between the extrusion rollers of the two adjacent extrusion frames. The flow-reducing member is arranged between the two adjacent extrusion frames to slow down the falling speed of the particle cluster. The driving member is arranged between the collecting pool and the extrusion frame. The driving member is used to drive all the extrusion frames to slide synchronously to expand or reduce the size of the falling channel.

[0014] By adopting the above-mentioned technical scheme, through the setting of the extrusion frame, the slow-flow member and the driving member, after the particle group enters the collection pool, it falls from the falling channel, and the driving member drives all the extrusion frames to slide to expand or reduce the size of the falling channel, so that when the particle group passes through the extrusion area, the two extrusion rollers can squeeze the particle group and force the particle group to disperse; through the setting of the slow-flow member, the falling speed of the particle group can be slowed down to increase the residence time of the particle group in the falling channel and improve the dispersion effect of the particle group.

[0015] Optionally, each of the extrusion frames has a plurality of extrusion rollers spaced apart in the height direction, so that a plurality of extrusion zones are formed between two adjacent extrusion frames; the flow-delaying member is disposed between two adjacent extrusion frames and between two vertically adjacent extrusion zones.

[0016] By adopting the above-mentioned technical scheme, by setting up multiple extrusion zones, the particle cluster can be extruded multiple times during its falling process, thereby improving the effect of breaking up the particle cluster; the slow-flow member is located between two vertically adjacent extrusion zones, so that when the particle cluster passes through the extrusion zone, it is blocked and decelerated by the slow-flow member, and when two adjacent extrusion frames approach each other, the extrusion roller can better extrude the particle cluster, thereby improving the extrusion effect.

[0017] Optionally, the flow-delaying member includes a push rod and two rotating plates, wherein the push rod is slidably installed on the inner wall of the collection pool and can be raised and lowered, one side of the two rotating plates is hinged to the push rod, and the sides of the two rotating plates away from the push rod are respectively hinged to two adjacent extrusion frames; when the two adjacent extrusion frames approach each other, the push rod moves upward and is inserted into the extrusion area.

[0018] By adopting the above-mentioned technical scheme, through the setting of the push rod and the two rotating plates, when the particle cluster falls from the falling channel, the two rotating plates can form a barrier to the particle cluster to slow down the falling speed of the particle cluster, thereby facilitating the two horizontally adjacent extrusion rollers to extrude it and disperse the particle cluster; when the two adjacent extrusion frames approach each other (the falling channel shrinks), the two rotating plates are driven to flip over to convert to a folded state. At this time, the two rotating plates jointly push the push rod, forcing the push rod to move up and insert into the top extrusion area to act on the particle cluster in the extrusion area. The push rod and the two horizontally adjacent extrusion rollers form three-point extrusion on the particle cluster, thereby improving the effect of breaking up the particle cluster.

[0019] Optionally, a blowing air duct for blowing hot air is provided in the push rod, and a first air outlet groove and a second air outlet groove are respectively provided on the outer peripheral wall of the push rod, the first air outlet groove and the second air outlet groove are both connected to the blowing air duct, and the first air outlet groove and the second air outlet groove are arranged at intervals around the central axis of the push rod; the first air outlet groove faces the extrusion area at the top, and the second air outlet groove faces the rotating plate.

[0020] By adopting the above-mentioned technical scheme, hot air is blown through the first air outlet slot or the second air outlet slot. On the one hand, when the extrusion roller breaks up the particle clusters, the hot air can blow up the particle clusters, thereby improving the breaking up effect of the extrusion roller on the particle clusters; on the other hand, the hot air can dry the moisture attached to the outer wall of the plastic particles to share the drying pressure of the subsequent drying mechanism; and, by drying the moisture attached to the outer wall of the plastic particles, the possibility of mutual adhesion between the plastic particles due to the presence of moisture can be reduced to a certain extent, thereby improving the breaking up effect of the particle clusters.

[0021] Optionally, each of the rotating pieces is provided with a rotating ring on one side close to the top rod, the rotating ring is sleeved on the outer peripheral wall of the top rod, and one side of the rotating piece is hinged to the top rod through the rotating ring; the rotating ring is provided with a connecting arc groove, when the two rotating pieces are in a folded state, the rotating ring closes the second air outlet groove and the connecting arc groove is connected to the first air outlet groove, and when the two rotating pieces are in an unfolded state, the rotating ring closes the first air outlet groove and the connecting arc groove is connected to the second air outlet groove.

[0022] By adopting the above-mentioned technical scheme, through the setting of the rotating ring and the connecting arc groove, when the two adjacent extrusion frames approach each other, the two rotating plates are forced to flip over, so that the push rod is pushed upward into the top extrusion area. At this time, the two rotating plates are in a folded state, and the hot air in the blowing flow channel can be blown outward from the first air outlet groove and the connecting arc groove in sequence to act on the top extrusion area, thereby blowing away the particle clusters in the extrusion area; when the two adjacent extrusion frames move away from each other, the two rotating plates flip and force the push rod to move downward. At this time, the plastic particles fall on the two rotating plates, and the hot air in the blowing flow channel can be blown outward from the second air outlet groove and the connecting arc groove in sequence to act on the plastic particles on the rotating plates, further dry and blow off the plastic particles, so that the plastic particles can continue to fall, which greatly improves the effect of breaking up the particle clusters.

[0023] Optionally, a lifting rod is slidably installed in the collecting pool, and each of the extrusion frames is connected to a connecting rod, one end of the connecting rod is hinged to the side wall of the extrusion frame, and the other end is hinged to the lifting rod; the driving member includes a rotating shaft, an eccentric rod, a push-pull rod and a driving motor, the rotating shaft is rotatably installed on the side wall of the collecting pool, the eccentric rod is arranged at one end of the rotating shaft and is eccentrically arranged between the rotating shaft; one end of the push-pull rod is hinged to the eccentric rod, and the other end is hinged to the lifting rod, the driving motor is arranged on the side wall of the collecting pool, and the output shaft of the driving motor is coaxially connected to the rotating shaft; when the rotating shaft rotates, the lifting rod can be lifted and lowered, and two adjacent extrusion frames are close to or away from each other.

[0024] By adopting the above-mentioned technical scheme, through the setting of the rotating shaft, eccentric rod, push-pull rod and driving motor, after the particle group falls into the falling channel, the driving motor drives the rotating shaft to rotate, driving the eccentric rod to revolve around the central axis of the rotating shaft, and the eccentric rod pulls the lifting rod to lift and lower through the pushing rod, so that the two adjacent extrusion frames are close to or away from each other to break up the particle group.

[0025] Optionally, the sizes of two adjacent falling channels change in the opposite direction. When one of the falling channels expands, the falling channel adjacent to it shrinks, and when one of the falling channels shrinks, the falling channel adjacent to it expands.

[0026] By adopting the above-mentioned technical solution, after multiple particle clusters fall into the collecting pool, when one of the falling channels expands, the falling channel adjacent to it shrinks, and the shrunken falling channel is able to break up the particle clusters, while the enlarged falling channel is used for the particle clusters to fall into and wait for being broken up, thereby achieving the purpose of having at least one or more falling channels in an expanded state for the particle clusters to fall, so that the particle clusters can continue to fall, and avoiding the possibility that all the falling channels shrink simultaneously, resulting in the accumulation of multiple particle clusters at the inlet end of the collecting pool.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. Through the setting of the vibrating conveyor plate, the collecting hopper and the collecting pool, the plastic particles are sent to the vibrating conveyor plate after cooling, and the vibrating conveying motor is turned on to force the vibrating conveyor plate to vibrate to convey the plastic particles, so that the plastic particles are conveyed and vibrated at the same time. When the plastic particles pass through the permeable mesh plate, the water in the plastic particles flows into the collecting pool through the permeable mesh plate for dehydration. At the same time, during the vibration of the vibrating conveyor plate, the plastic particles can be broken up to reduce the possibility of agglomeration of the plastic particles. The broken plastic particles fall from the screening mesh plate to the collecting hopper, and are transferred from the collecting hopper to the drying mechanism for drying; the particle clusters that are not broken up fall from the outlet end of the vibrating conveyor plate to the collecting pool, which has a screening effect and greatly improves the working efficiency;

[0029] 2. Through the arrangement of the ejector rod and the two rotating pieces, when the particle mass falls from the falling channel, the two rotating pieces can block the particle mass to slow down the falling speed of the particle mass, thereby facilitating the two horizontally adjacent squeezing rollers to squeeze it and disperse the particle mass; when the two adjacent squeezing frames approach each other (the falling channel is reduced), the two rotating pieces are driven to flip and switch to a folded state. At this time, the two rotating pieces jointly push the ejector rod, forcing the ejector rod to move up and insert into the squeezing area at the top to act on the particle mass in the squeezing area. The ejector rod and the two horizontally adjacent squeezing rollers form a three-point squeezing on the particle mass, thereby improving the effect of breaking up the particle mass;

[0030] 3. Blowing hot air through the first air outlet slot or the second air outlet slot, on the one hand, when the extrusion roller breaks up the particle clusters, the hot air can blow up the particle clusters, thereby improving the breaking up effect of the extrusion roller on the particle clusters; on the other hand, the hot air can dry the moisture attached to the outer wall of the plastic particles to share the drying pressure of the subsequent drying mechanism; and, drying the moisture attached to the outer wall of the plastic particles can, to a certain extent, reduce the possibility of plastic particles sticking to each other due to the presence of moisture, thereby improving the breaking up effect of the particle clusters. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the overall structure of Example 1;

[0032] Figure 2 is a schematic diagram of the structure of a vibrating conveyor plate in Example 1;

[0033] Figure 3 is a schematic diagram of an explosion of the aggregate hopper embodied in Example 1;

[0034] Figure 4 yes Figure 2 The enlarged view of point A in the middle;

[0035] Figure 5is a partial cross-sectional view of the disintegrated components embodied in Embodiment 2;

[0036] Figure 6 yes Figure 5 The enlarged view of point B in the middle;

[0037] Figure 7 is an exploded schematic diagram of a rotating ring embodied in Example 2;

[0038] Figure 8 is a partial cross-sectional view of a driving member according to Embodiment 2;

[0039] Fig. 9 is a partial cross-sectional view of the connecting pipe of Embodiment 3;

[0040] Fig.10 is a partial cross-sectional view of embodiment 3 showing the connecting arc groove connecting to the second gas outlet groove;

[0041] Fig.11 It is a partial cross-sectional view of Example 3 showing that the connecting arc groove is connected to the first air outlet groove.

[0042] Explanation of reference numerals: 1. Plastic melting device; 2. Particle forming device; 3. Particle cooling device; 4. Vibrating conveyor plate; 41. Collecting hopper; 42. Vibrating conveying motor; 43. Water-permeable mesh plate; 431. Lifting portion; 432. Collection area; 433. Water-permeable hole; 44. Screening mesh plate; 441. Screening hole; 45. Water collecting pool; 451. Filter hole plate; 452. Collecting box; 453. Guide strip; 454. Guide groove; 455. Movable box; 456. Handle; 46. Feed cover; 461. Feed pipe; 47. Guide hopper; 48. Collecting pool; 5. Collecting pool; 51. Lifting Rod; 52, slide rail; 53, guide cloth; 54, first lifting groove; 55, second lifting groove; 56, discharge pipe; 57, air supply pipe; 58, connecting pipe; 6, drying mechanism; 7, scattering component; 71, extrusion frame; 711, falling channel; 712, connecting rod; 72, extrusion roller; 721, extrusion area; 73, push rod; 731, blowing air channel; 732, first air outlet groove; 733, second air outlet groove; 734, lifting block; 74, rotating sheet; 741, rotating ring; 742, connecting arc groove; 75, rotating shaft; 76, eccentric rod; 77, push-pull rod; 78, driving motor. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1 -Attached Fig.11 This application is described in further detail. Example 1

[0044] The embodiment of the present application discloses a granulation system for producing plastic granules.

[0045] Reference Figure 1, a granulation system for producing plastic granules, comprising a plastic melting device 1, a granule forming device 2, a granule cooling device 3 and a dehydration screening device which are arranged in sequence, the plastic melting device 1 is used to heat the waste plastic to a molten state, the granule forming device 2 is used to extrude and cut the molten waste plastic into granules, and the granule cooling device 3 is used to cool the plastic granules (the plastic melting device 1, the granule forming device 2 and the granule cooling device 3 are all prior art structures, and their structures are not elaborated on in detail here).

[0046] Reference Figure 1 , Figure 2 The dewatering and screening device includes a vibrating conveyor plate 4, a collecting hopper 41, a collecting pool 5 and a drying mechanism 6. A water collecting pool 45 is arranged at the bottom of the vibrating conveyor plate 4. The top of the water collecting pool 45 is open and forms an inlet end of the water collecting pool 45. The vibrating conveyor plate 4 is installed on the top of the water collecting pool 45. In this embodiment, the vibrating conveyor plate 4 is inclined, and the height of the inlet end of the vibrating conveyor plate 4 is lower than the height of the outlet end of the vibrating conveyor plate 4.

[0047] Reference Figure 1 , Figure 2 A feed cover 46 is fixedly installed on the top of the water collecting pool 45. The feed cover 46 is arranged on the inlet end of the vibrating conveying plate 4. The feed cover 46 is connected with a feed pipe 461. The inlet end of the feed pipe 461 is connected with the outlet end of the particle cooling device 3. The outlet end of the feed pipe 461 passes through the feed cover 46 and is connected with the inlet end of the vibrating conveying plate 4. The inlet end of the vibrating conveying plate 4 is connected to the outlet end of the particle cooling device 3 through the feed pipe 461.

[0048] Reference Figure 2 , Figure 3 A mounting frame is installed on the top wall of the vibrating conveyor plate 4, and a vibrating conveying motor 42 is installed on the mounting frame. The vibrating conveying motor 42 is installed on the vibrating conveyor plate 4 through the mounting frame. The vibrating conveying motor 42 is used to drive the vibrating conveyor plate 4 to vibrate to convey the plastic particles, so that the plastic particles are conveyed toward the outlet end of the vibrating conveyor plate 4.

[0049] Reference Figure 2 , Figure 3The bottom wall of the vibrating conveyor plate 4 is sequentially installed with a permeable mesh plate 43 and a screening mesh plate 44 along the conveying direction. The surface of the permeable mesh plate 43 is provided with a plurality of permeable holes 433, and the plurality of permeable holes 433 are evenly distributed along the surface of the permeable mesh plate 43. The inlet end of the water collecting pool 45 is directly opposite to the permeable mesh plate 43; the permeable mesh plate 43 has a warping portion 431 on the side away from the screening mesh plate 44, and the warping portion 431 is integrally formed with the permeable mesh plate 43. The warping portion 431 gradually increases in height from the side close to the permeable mesh plate 43 to the side away from the permeable mesh plate 43, and a collection area 432 is formed between the warping portion 431 and the permeable mesh plate 43, and a feed cover 46 is covered in the collection area 432, and the outlet end of the feed pipe 461 is connected to the collection area 432.

[0050] Reference Figure 1 , Figure 2 , Figure 3 , a plurality of screening holes 441 are provided on the surface of the screening mesh plate 44, and the plurality of screening holes 441 are evenly distributed along the surface of the screening mesh plate 44; in the present embodiment, the screening mesh plate 44 is detachably mounted on the vibrating conveying plate 4 by means of bolt connection; a collecting pool 48 is mounted on one side of the water collecting pool 45, a collecting hopper 41 is mounted on the lower surface of the vibrating conveying plate 4 and is located on the top of the collecting pool 48, an inlet end of the collecting hopper 41 faces the screening mesh plate 44, an outlet end of the collecting hopper 41 is connected to the collecting pool 48, the collecting pool 48 is connected to the drying mechanism 6 by a pipeline, and the outlet end of the collecting hopper 41 is connected to the inlet end of the drying mechanism 6 through the collecting pool 48; the drying mechanism 6 is used to dry the moisture of the plastic particles (the drying mechanism 6 is a prior art structure, and its structure is not elaborated on in detail herein).

[0051] Reference Figure 1 , Figure 3 The collecting pool 5 is arranged on one side of the vibrating conveying plate 4. The collecting pool 5 is used to collect particle clusters. The top of the collecting pool 5 is open and forms the inlet end of the collecting pool 5. The vibrating conveying plate 4 is equipped with a guide hopper 47. The inlet end of the guide hopper 47 is connected to the outlet end of the vibrating conveying plate 4, and the outlet end of the guide hopper 47 is connected to the inlet end of the collecting pool 5.

[0052] Reference Figure 2 , Figure 4 In this embodiment, a filter plate 451 is installed at the inlet end of the water collection pool 45, and the filter plate 451 is used to filter foreign matter mixed in the water. A collection box 452 for collecting foreign matter is installed on the side wall of the water collection pool 45. The top of the collection box 452 is open, and a guide member is provided between the collection box 452 and the filter plate 451. The guide member is used to guide the foreign matter filtered by the filter plate 451 to the collection box 452.

[0053] Reference Figure 2 , Figure 4The guide member is configured as a guide bar 453, which is installed in the water collecting pool 45, and the guide bar 453 is located on one side of the filter hole plate 451, and the height of the guide bar 453 is lower than the height of the filter hole plate 451, and one end of the guide bar 453 extends into the collection box 452; a guide groove 454 is provided on the top wall of the guide bar 453, and both ends of the guide groove 454 are extended along the length direction of the guide bar 453, and one end of the guide groove 454 passes through the side wall of the guide bar 453 close to the collection box 452 to be connected to the collection box 452; with such a design, after a certain amount of foreign matter is filtered on the filter hole plate 451, the foreign matter is pushed toward the side of the guide bar 453, so that it falls into the guide groove 454, and can be collected in the collection box 452 by the guide groove 454.

[0054] A movable box 455 is placed in the collection box 452 . The top of the movable box 455 is open, and the outlet end of the guide groove 454 faces the top of the movable box 455 . The movable box 455 is provided with a handle 456 for taking the movable box 455 .

[0055] The implementation principle of Example 1 of the present application is as follows: after the plastic particles are cooled, they are fed into the vibrating conveyor plate 4, and the vibrating conveying motor 42 is turned on to force the vibrating conveyor plate 4 to vibrate to convey the plastic particles, so that the plastic particles vibrate while being conveyed, and when the plastic particles pass through the permeable mesh plate 43, the moisture in the plastic particles flows into the collecting tank 45 through the permeable mesh plate 43 for dehydration treatment; at the same time, during the vibration of the vibrating conveyor plate 4, the plastic particles can be broken up to reduce the possibility of agglomeration of the plastic particles, and the broken up plastic particles fall from the screening mesh plate 44 to the collecting hopper 41, and are transferred from the collecting hopper 41 to the drying mechanism 6 for drying; the particle clusters that are not broken up fall from the outlet end of the vibrating conveyor plate 4 to the collecting tank 5, which has a screening effect and greatly improves the working efficiency. Example 2

[0056] The embodiment of the present application discloses a granulation system for producing plastic granules.

[0057] Reference Figure 5 The difference between the granulation system for producing plastic granules disclosed in the embodiment of the present application and embodiment 1 is that:

[0058] In this embodiment, a breaking-up component 7 is installed in the collecting pool 5, and the breaking-up component 7 is used to break up the collected particle clusters; the breaking-up component 7 includes an extrusion frame 71, a flow-reducing member and a driving member, the extrusion frame 71 is a rectangular frame structure, and a slide rail 52 is fixedly installed on the inner wall of the collecting pool 5, and both ends of the slide rail 52 are extended in the horizontal direction, the extrusion frame 71 is slidably installed on the slide rail 52, and multiple extrusion frames 71 are arranged at intervals along the length direction of the slide rail 52, and two adjacent extrusion frames 71 form a falling channel 711 for the particle clusters to fall.

[0059] It should be noted that a guide cloth 53 is installed between the two extrusion frames 71 closest to the side and the inner wall of the collecting pool 5. One side of the guide cloth 53 is fixedly connected to the top wall of the extrusion frame 71, and the other side is fixedly connected to the inner wall of the collecting pool 5. The guide cloth 53 is used to guide the particle cluster so that the particle cluster falls from the falling channel 711.

[0060] Reference Figure 5 , Figure 6 A squeezing roller 72 is installed on the inner wall of each squeezing frame 71, and the two ends of the squeezing roller 72 are respectively connected to the two opposite inner walls of the squeezing frame 71, and a squeezing area 721 is formed between the squeezing rollers 72 of two adjacent squeezing frames 71; in this embodiment, there are multiple squeezing rollers 72 in each squeezing frame 71, and the multiple squeezing rollers 72 are arranged at intervals along the height direction to form multiple squeezing areas 721 between two adjacent squeezing frames 71.

[0061] Reference Figure 5 , Figure 6 The slow-flow member is arranged between two adjacent extrusion frames 71 and between two vertically adjacent extrusion areas 721. The slow-flow member is used to slow down the falling speed of the particle group; the slow-flow member includes a top rod 73 and two rotating plates 74. The two opposite inner walls of the collecting pool 5 are provided with a first lifting groove 54. The two ends of the first lifting groove 54 are extended along the height direction. The two ends of the top rod 73 are fixedly installed with lifting blocks 734. The two lifting blocks 734 are arranged corresponding to the two first lifting grooves 54. Each lifting block 734 is slidably installed on the corresponding first lifting groove 54. The top rod 73 is slidably installed on the inner wall of the collecting pool 5 through the lifting block 734 so that it can be lifted and lowered.

[0062] Reference Figure 6 , Figure 7 A plurality of rotating rings 741 are fixedly installed on one side of the two rotating pieces 74. The rotating rings 741 are sleeved on the outer peripheral wall of the top rod 73. The rotating rings 741 of the two rotating pieces 74 are staggered along the length direction of the top rod 73. The two rotating pieces 74 are hinged to the top rod 73 through their respective rotating rings 741; the sides of the two rotating pieces 74 away from the top rod 73 are respectively hinged to the inner walls of the two adjacent extrusion frames 71. When the two adjacent extrusion frames 71 approach each other, the top rod 73 moves upward and is inserted into the extrusion area 721.

[0063] Reference Figure 5 , Figure 8The driving member is arranged between the collecting pool 5 and the extrusion frame 71, and the driving member is used to drive all the extrusion frames 71 to slide synchronously to expand or reduce the size of the falling channel 711; the two opposite inner walls of the collecting pool 5 are provided with second lifting grooves 55, and the two ends of the second lifting grooves 55 are extended along the height direction. A lifting rod 51 is slidably installed between the two second lifting grooves 55, and each extrusion frame 71 is connected to a connecting rod 712, one end of the connecting rod 712 is hinged to the side wall of the extrusion frame 71, and the other end is hinged to the lifting rod 51.

[0064] Reference Figure 5 , Figure 8 The driving member includes a rotating shaft 75, an eccentric rod 76, a push-pull rod 77 and a driving motor 78. The rotating shaft 75 is rotatably installed on the side wall of the collecting tank 5. The eccentric rod 76 is fixedly installed on one end of the rotating shaft 75. In this embodiment, the eccentric rod 76 is eccentrically arranged with respect to the rotating shaft 75 (that is, the central axis of the eccentric rod 76 is arranged parallel to the central axis of the rotating shaft 75). One end of the push-pull rod 77 is hinged to the eccentric rod 76, and the other end is hinged to the lifting rod 51.

[0065] Reference Figure 8 The driving motor 78 is fixedly installed on the outer wall of the collecting pool 5, and the output shaft of the driving motor 78 penetrates into the collecting pool 5 and is coaxially connected to the rotating shaft 75. When the rotating shaft 75 rotates, the lifting rod 51 can be lifted and lowered, and the two adjacent extrusion frames 71 are close to or away from each other; it should be noted that, in this embodiment, the sizes of the two adjacent falling channels 711 change in the opposite direction. When one of the falling channels 711 expands, the falling channel 711 adjacent to it shrinks, and when one of the falling channels 711 shrinks, the falling channel 711 adjacent to it expands.

[0066] Reference Figure 5 A discharge pipe 56 is connected to the bottom of the collecting tank 5, the inlet end of the discharge pipe 56 is connected to the inside of the collecting tank 5, and the outlet end of the discharge pipe 56 is connected to the inlet end of the drying mechanism 6; in other embodiments, the outlet end of the discharge pipe 56 can be connected to the inlet end of the vibrating conveyor plate 4 to form a circulation, thereby reducing the possibility of some plastic particles sticking to each other.

[0067] The implementation principle of Example 2 of the present application is as follows: after the particle cluster falls into the falling channel 711, the driving motor 78 drives the rotating shaft 75 to rotate, driving the eccentric rod 76 to revolve around the central axis of the rotating shaft 75, and the eccentric rod 76 pulls the lifting rod 51 to lift and lower through the pushing rod, so that the two adjacent extrusion frames 71 are close to each other or away from each other. When the two extrusion frames 71 are close to each other, the two horizontally adjacent extrusion rollers 72 are driven to approach each other to extrude the particle cluster in the extrusion area 721. At the same time, the top rod 73 moves upward under the action of the two rotating plates 74, and also acts on the particle cluster, forming a three-point extrusion, so that the particle cluster is diffused, thereby improving the effect of breaking up the particle cluster. Example 3

[0068] The embodiment of the present application discloses a granulation system for producing plastic granules.

[0069] Reference Fig. 9 , Fig.10 The difference between the granulation system for producing plastic granules disclosed in the embodiment of the present application and embodiment 2 is that:

[0070] In this embodiment, a blowing air duct 731 is opened in the top rod 73, and the side wall of the collecting pool 5 is connected to an air supply pipe 57 for supplying hot air. One end of the air supply pipe 57 penetrates into the collecting pool 5 and is connected to a connecting pipe 58. One end of the connecting pipe 58 is connected to the air supply pipe 57 and communicates with the inside of the air supply pipe 57, and the other end is connected to the top rod 73 and connected to the blowing air duct 731. The blowing air duct 731 is connected to the inside of the air supply pipe 57 through the connecting pipe 58, and the connecting pipe 58 is configured as a corrugated hose.

[0071] Reference Fig.10 , Fig.11 The outer peripheral wall of the push rod 73 is respectively provided with a first air outlet groove 732 and a second air outlet groove 733, both of which are connected to the blowing flow channel 731, and the first air outlet groove 732 and the second air outlet groove 733 are arranged at intervals around the central axis of the push rod 73, and two second air outlet grooves 733 are provided, and the first air outlet groove 732 is located between the two second air outlet grooves 733; in this embodiment, both ends of the first air outlet groove 732 and both ends of the second air outlet groove 733 are extended along the length direction of the push rod 73.

[0072] Reference Fig.10 , Fig.11 , the first air outlet groove 732 faces the extrusion area 721 at the top, and the two second air outlet grooves 733 are arranged corresponding to the two rotating pieces 74, and the second air outlet grooves 733 face the corresponding rotating pieces 74; the outer peripheral walls of the rotating rings 741 corresponding to the two rotating pieces 74 are each provided with a connecting arc groove 742, the connecting arc groove 742 penetrates the inner peripheral wall of the rotating ring 741, and the connecting arc groove 742 is arranged in an arc shape around the central axis of the rotating ring 741; when the two rotating pieces 74 are in a folded state (two adjacent extrusion frames 71 are close to each other), the rotating ring 741 closes the second air outlet groove 733 and the connecting arc groove 742 is connected to the first air outlet groove 732, and when the two rotating pieces 74 are in an unfolded state (two adjacent extrusion frames 71 are away from each other), the rotating ring 741 closes the first air outlet groove 732 and the connecting arc groove 742 is connected to the second air outlet groove 733.

[0073] The implementation principle of the third embodiment of the present application is as follows: by blowing hot air through the blowing air channel 731, the plastic particles can be pre-dried, the drying pressure of the subsequent drying mechanism 6 can be reduced, and the effect of breaking up the particle clusters can be improved to a certain extent; when the two adjacent extrusion frames 71 are close to each other, the two rotating pieces 74 are forced to flip, so that the top rod 73 is pushed upward into the top extrusion area 721. At this time, the two rotating pieces 74 are in a folded state, and the hot air from the blowing air channel 731 can be blown outward from the first air outlet groove 732 and the connecting arc groove 742 in sequence to achieve The extrusion area 721 is used for the top, so as to blow away the particle clusters in the extrusion area 721; when the two adjacent extrusion frames 71 move away from each other, the two rotating pieces 74 flip and force the top rod 73 to move downward. At this time, the plastic particles fall on the two rotating pieces 74, and the hot air in the blowing air channel 731 can be blown outward from the second air outlet groove 733 and the connecting arc groove 742 in turn to act on the plastic particles on the rotating piece 74, further dry the plastic particles and blow them off, so that the plastic particles can continue to fall, which greatly improves the effect of breaking up the particle clusters.

[0074] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A granulation system for producing plastic granules, characterized in that: The invention comprises a plastic melting device (1), a particle forming device (2), a particle cooling device (3) and a dehydration and screening device which are arranged in sequence. The dehydration and screening device comprises a vibrating conveying plate (4), a collecting hopper (41), a collecting pool (5) and a drying mechanism (6). The inlet end of the vibrating conveying plate (4) is connected to the outlet end of the particle cooling device (3). The vibrating conveying plate (4) is arranged in an inclined manner. The inlet end of the vibrating conveying plate (4) is lower than the outlet end of the vibrating conveying plate (4). The vibrating conveying plate (4) is provided with a vibrating conveying motor (42). The vibrating conveying plate (4) is provided with a water-permeable mesh plate (43) and a screening mesh plate (44) in sequence along the conveying direction. The collecting hopper (41) is arranged on the vibrating conveying plate ( 4) and the inlet end of the collecting hopper (41) is directly opposite to the screening mesh plate (44), and the outlet end of the collecting hopper (41) is connected to the inlet end of the drying mechanism (6); the collecting pool (5) is arranged on one side of the vibrating conveying plate (4), and the outlet end of the vibrating conveying plate (4) is connected to the inlet end of the collecting pool (5); the side of the permeable mesh plate (43) away from the screening mesh plate (44) has a warping portion (431), and the warping portion (431) gradually increases in height from the side close to the permeable mesh plate (43) to the side away from the permeable mesh plate (43), and a collection area (432) is formed between the warping portion (431) and the permeable mesh plate (43); the bottom of the vibrating conveying plate (4) is provided with a water collecting pool (45), The water collecting pool (45) is provided with a feed cover (46), and the feed cover (46) is provided in the collecting area (432). The feed cover (46) is connected to a feed pipe (461), and the inlet end of the feed pipe (461) is connected to the outlet end of the particle cooling device (3), and the outlet end of the feed pipe (461) passes through the feed cover (46) and is connected to the collecting area (432); the vibrating conveying plate (4) is provided with a guide hopper (47), and the inlet end of the guide hopper (47) is connected to the outlet end of the vibrating conveying plate (4), and the outlet end of the guide hopper (47) is connected to the inlet end of the collecting pool (5); a breaking up component (7) for breaking up the particle clusters is provided in the collecting pool (5); the breaking up component (7) comprises an extrusion frame (71), a flow-delaying member and a driving member, wherein the extrusion frame (71) is slidably installed in the collection pool (5) and is arranged in plurality at intervals, and two adjacent extrusion frames (71) form a falling channel (711) for the particle cluster to fall; an extrusion roller (72) is installed on the inner wall of each extrusion frame (71), and an extrusion area (721) is formed between the extrusion rollers (72) of the two adjacent extrusion frames (71); the flow-delaying member is arranged between the two adjacent extrusion frames (71) to slow down the falling speed of the particle cluster, and the driving member is arranged between the collection pool (5) and the extrusion frame (71), and the driving member is used to drive all the extrusion frames (71) to slide synchronously to expand or reduce the size of the falling channel (711);A plurality of squeezing rollers (72) are arranged at intervals along the height direction of each squeezing frame (71), so that a plurality of squeezing areas (721) are formed between two adjacent squeezing frames (71); the slow-flow member is arranged between two adjacent squeezing frames (71) and is located between two vertically adjacent squeezing areas (721); the slow-flow member comprises a top rod (73) and two rotating pieces (74); the top rod (73) is slidably mounted on the inner wall of the collection tank (5) and can be raised and lowered; one side of the two rotating pieces (74) is hinged to the top rod (73); the sides of the two rotating pieces (74) away from the top rod (73) are respectively hinged to two adjacent squeezing frames (71); when two adjacent squeezing frames (71) approach each other, the top rod (73) moves upward and is inserted into the squeezing area (721). ; 2. The granulation system for producing plastic granules according to claim 1, characterized in that: The push rod (73) is provided with a blowing air channel (731) for blowing hot air, and the outer peripheral wall of the push rod (73) is provided with a first air outlet groove (732) and a second air outlet groove (733), the first air outlet groove (732) and the second air outlet groove (733) are both connected to the blowing air channel (731), and the first air outlet groove (732) and the second air outlet groove (733) are arranged at intervals around the central axis of the push rod (73); the first air outlet groove (732) faces the extrusion area (721) at the top, and the second air outlet groove (733) faces the rotating plate (74).

3. The granulation system for producing plastic granules according to claim 2, characterized in that: A rotating ring (741) is provided on one side of each rotating piece (74) close to the push rod (73); the rotating ring (741) is sleeved on the outer peripheral wall of the push rod (73); one side of the rotating piece (74) is hinged to the push rod (73) through the rotating ring (741); the rotating ring (741) is provided with a connecting arc groove (742); when the two rotating pieces (74) are in a folded state, the rotating ring (741) closes the second air outlet groove (733) and the connecting arc groove (742) is connected to the first air outlet groove (732); when the two rotating pieces (74) are in an unfolded state, the rotating ring (741) closes the first air outlet groove (732) and the connecting arc groove (742) is connected to the second air outlet groove (733).

4. The granulation system for producing plastic granules according to claim 1, characterized in that: A lifting rod (51) is slidably installed in the collection tank (5), and each of the extrusion frames (71) is connected to a connecting rod (712). One end of the connecting rod (712) is hinged to the side wall of the extrusion frame (71), and the other end is hinged to the lifting rod (51); the driving member comprises a rotating shaft (75), an eccentric rod (76), a push-pull rod (77) and a driving motor (78); the rotating shaft (75) is rotatably installed on the side wall of the collection tank (5), and the eccentric rod (76) is arranged on the rotating shaft (75). One end of the shaft (75) is eccentrically arranged with respect to the rotating shaft (75); one end of the push-pull rod (77) is hinged to the eccentric rod (76), and the other end is hinged to the lifting rod (51); the driving motor (78) is arranged on the side wall of the collecting tank (5), and the output shaft of the driving motor (78) is coaxially connected to the rotating shaft (75); when the rotating shaft (75) rotates, the lifting rod (51) can be raised and lowered, and two adjacent extrusion frames (71) are moved closer to or farther away from each other.

5. The granulation system for producing plastic granules according to claim 4, characterized in that: The sizes of the two adjacent falling channels (711) change in opposite directions. When one of the falling channels (711) expands, the adjacent falling channel (711) shrinks, and when one of the falling channels (711) shrinks, the adjacent falling channel (711) expands.

Images