Plastic pipe returned material granulation equipment

Abstract

The invention belongs to the technical field of plastic particle production equipment, and particularly relates to plastic pipe returned material granulation equipment which comprises a crushing and cleaning assembly, a liquid discharging and air drying assembly, an extruding and pelletizing assembly and a cooling assembly. The liquid discharging and air drying assembly is used for intermittently discharging cleaning liquid from the cleaned plastic blocks and effectively air-drying the discharged plastic blocks, the extruding and pelletizing assembly is used for extruding plastic strips from the air-dried plastic blocks and effectively pelletizing the extruded softened plastic strips, and the cooling assembly is used for water-cooling plastic particles. According to the invention, the blade plates uniformly distributed in the circumferential direction in the cleaning cylinder of the crushing and cleaning assembly can guide the waste plastic blocks which are crushed by the double-shaft crushing equipment, reach the liquid level of the cleaning liquid, rotate along with the cleaning liquid and have different densities into the cleaning liquid to be effectively cleaned; and the plastic blocks with the density smaller than that of water are prevented from floating on the liquid level in the cleaning process and cannot be effectively cleaned.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic granule production equipment, and in particular relates to a plastic pipe recycling granulation equipment. Background Art

[0002] The recycling of waste plastic pipes is a crucial link in the environmentally friendly production of plastics. Recycled plastics often go through processes such as crushing, cleaning, melting, extrusion, cooling and pelletizing. For example, in the patent with the published application number 201810645870.2, in the cooling process of plastic strips before pelletizing, water cooling, air cooling or liquid nitrogen are generally used to cool the plastic strips. In order to achieve the ideal cooling effect, when the cooling equipment is arranged horizontally, the cooling equipment is required to have a longer layout space and needs to occupy more space in the factory.

[0003] After the waste plastics are crushed and before they are melted and extruded, they need to be effectively cleaned with water containing cleaning agents. The density of plastics varies. Some plastics have a density greater than that of water, while others have a density less than that of water. General cleaning equipment only cleans plastics with a density greater than that of water or by stirring. When stirring and cleaning plastics with a density less than that of water, plastics with a density less than that of water will float upward in the water, resulting in poor cleaning effects. At the same time, the cleaning of general plastics is intermittent, that is, after cleaning a batch of plastics and filtering and collecting them, another batch of plastics is put in for cleaning and filtering and collection. This cleaning method has low cleaning efficiency.

[0004] The present invention designs a plastic pipe recycling granulation device to solve the above problems. Summary of the invention

[0005] Based on this, it is necessary to provide a plastic tube recycling granulation equipment to address the problems existing in the current plastic granule production equipment. The blades evenly distributed circumferentially in the cleaning cylinder of the crushing and cleaning component of the present invention can guide the discarded plastic blocks of different densities that have been crushed by the double-axis crushing equipment and reached the surface of the cleaning liquid and rotated with the cleaning liquid into the cleaning liquid for effective cleaning, thereby preventing the plastic blocks with a density less than water from floating on the liquid surface and not being effectively cleaned during the cleaning process. The crushing and cleaning component of the present invention uses a vortex-shaped first drainage net located below the blades in the cleaning cylinder and evenly distributed circumferentially to allow the cleaned plastic blocks that enter the cleaning liquid and rotate with the cleaning liquid to move along the first drainage net toward the four columns of first discharge ports on the wall of the cleaning cylinder, while the several second drainage nets arranged on the first drainage net accurately guide the cleaned plastic blocks moving along the first drainage net to each first discharge port in the corresponding column and allow the cleaned plastic blocks to enter the corresponding shell of the drainage and air-drying component through the first discharge port. The plastic blocks that enter the corresponding shell are discharged in the corresponding The cleaning liquid is discharged under the interaction of the two second baffles and the first baffle, and the plastic blocks discharged with the cleaning liquid are discharged into the extrusion pelletizing assembly through the first discharge pipe under the blowing of the dry air sent by the first air pump above. The first filter hole at the bottom of the first discharge pipe can filter out the cleaning liquid in the plastic blocks and recycle it, and the dry air sent by the first air pump can effectively dry the plastic blocks from which the cleaning liquid has been filtered out during the movement of the plastic blocks in the first discharge pipe, ensuring that the crushing and cleaning assembly can continuously and uninterruptedly clean the plastic blocks, effectively improving the cleaning efficiency of the plastic blocks. The extrusion pelletizing assembly and cooling assembly in the present invention can pelletize the plastic strips first and then water-cool the plastic pellets after the plastic is extruded into plastic strips. The spiral groove in the cooling assembly can water-cool the large number of plastic pellets that continuously enter in the spiral motion, effectively saving the layout space of the cooling equipment. The two groups of double-person cutters of the extrusion pelletizing assembly in the present invention can effectively pelletize the plastic strips that have just been extruded and are still in a softened state. The air passages on the upper and lower sides of the double-person cutter can effectively blow the cut softened plastic pellets away from the cutter to prevent the softened plastic pellets from sticking to the double-person cutter, thereby effectively completing the efficient pelletizing of the softened plastic strips.

[0006] The above purpose is achieved through the following technical solutions: A plastic pipe recycling granulation equipment, used for crushing, cleaning and extrusion granulation of waste plastics, including: Crushing and cleaning components are used to crush and continuously and effectively clean waste plastics of different densities.

[0007] The draining and air-drying component is used to intermittently drain the cleaning liquid from the cleaned plastic blocks and effectively air-dry the discharged plastic blocks. The draining and air-drying component has the characteristics of low cleaning liquid loss.

[0008] The extrusion pelletizing component is used for extruding plastic strips from air-dried plastic blocks and effectively pelletizing the extruded softened plastic strips.

[0009] The cooling component is used for water cooling plastic pellets, and the cooling component has the characteristic of small layout space.

[0010] In one embodiment, the crushing and cleaning assembly includes a cleaning cylinder suspended by a bracket, a double-axis crushing device is arranged above the cleaning cylinder, a plurality of circumferentially evenly distributed inclined blades are arranged on the upper part of the cleaning cylinder, a plurality of vortex-type first drainage nets are arranged circumferentially below the blades, which are coaxial with the cleaning cylinder and guide the rotating cleaning liquid in the cleaning cylinder to a corresponding row of first discharge ports on the wall of the cleaning cylinder, a plurality of second drainage nets are arranged on the convex surface of the first drainage net to guide the rotating cleaning liquid to the first discharge port, a shaft sleeve is arranged at the bottom of the cleaning cylinder, a rotating shaft connected to the first motor on the bracket is rotatably arranged in the shaft sleeve, a plurality of blades are arranged circumferentially on the upper end of the rotating shaft, and a partition net is arranged between the blades and the first drainage net.

[0011] In one of the embodiments, the drainage and air-drying component includes a plurality of shells corresponding to the first drainage nets one by one, the shells are arranged on the outer wall of the cleaning cylinder at a first discharge port in a row corresponding to the corresponding first drainage net, a first baffle plate is hinged in the shell through a vertical first hinge shaft, the first baffle plate divides the shell into two spaces and is driven by a second motor, one side space of the first baffle plate is connected to the corresponding first discharge port in a row, the top and bottom of the other side space of the first baffle plate are respectively provided with a first air supply pipe and a second discharge port, and the first discharge port divided by the first baffle plate in the shell Two second baffles are symmetrically hinged in the outlet side space through a vertical second hinge axis to push the plastic blocks discharged from the first discharge port toward the first baffle and are driven by a third motor. A fork is provided on the end side of the second baffle. The first air supply pipe is connected to the second annular pipe, and the second annular pipe is connected to the first air pump arranged on the outer wall of the cleaning cylinder through a pipeline. The second discharge port is connected to the first annular pipe arranged on the outer wall of the cleaning cylinder. The first annular pipe is provided with an S-shaped first discharge pipe connected thereto, and the bottom wall surface of the first discharge pipe is provided with densely distributed first filter holes.

[0012] In one embodiment, the outer wall of the first discharge pipe is provided with a first water tank connected with the first filter hole through a drainage channel, the wall surface of the water tank is provided with a first liquid discharge pipe for discharging liquid into the cleaning cylinder, and the first liquid discharge pipe is provided with a first water pump.

[0013] In one embodiment, a first gear is disposed at the upper end of the first hinge shaft, and the first gear is meshed with a second gear disposed on the output shaft of the second motor on the housing.

[0014] In one of the embodiments, a third gear is provided on the two second hinge shafts corresponding to the two second baffles in the shell, the two third gears are meshed with the two fourth gears on the shell one by one, the two fourth gears are connected by two fifth gears meshing with each other, and the shaft where the fifth gear is located is connected to the third motor on the shell.

[0015] In one embodiment, the extrusion pelletizing assembly includes an extruder, the extrusion end of the extruder is provided with a flaring sleeve, the lower end of the flaring sleeve is provided with an extrusion plate, the extrusion plate is provided with a plurality of rows of extrusion holes, the flaring sleeve is provided with a frame, the frame is symmetrically provided with two pairs of guide sleeves, each pair of guide sleeves has a sliding rod sliding horizontally, the two sliding rods are connected to racks through connecting rods, a reciprocating drive assembly is provided on the frame, a sixth gear meshing with the two racks is provided on the output shaft of the reciprocating drive assembly, a plurality of double-man cutters are arranged at intervals on the two sliding rods, the double-man cutters on the two sliding rods are staggered, the gaps between adjacent double-man cutters correspond to a corresponding row of extrusion holes on the extrusion plate, the upper and lower sides of the double-man cutters are provided with separation structures to prevent them from sticking to the plastic pellets, a hopper is provided below the double-man cutter, and the lower end of the hopper is provided on the second discharge pipe that guides the plastic pellets to the cooling assembly.

[0016] In one embodiment, the separation structure includes an air duct of the same length as the double cutter, and the air duct is arranged on the upper and lower sides of the double cutter. The air duct is connected to the second air pump on the corresponding connecting rod through a second air supply pipe buried in the double cutter and the sliding rod, and both sides of the air duct are densely provided with exhaust ports for supplying air to the corresponding side blades of the corresponding double cutter.

[0017] In one of the embodiments, guide plates are provided on both sides of the air passage to enable the air discharged from the corresponding side exhaust ports to move horizontally.

[0018] In one embodiment, the cooling component includes a spiral groove suspended by a bracket, a straight groove is provided at the lower end of the spiral groove, second filter holes are densely distributed at the middle bottom of the straight groove, a second water tank connected to the second filter holes is provided on the outer side of the bottom of the straight groove, a second drainage pipe for circulating water to the upper end of the spiral groove is provided on the wall surface of the second water tank, and a second water pump is provided on the second drainage pipe.

[0019] The beneficial effects of the present invention are: 1. The blades evenly distributed in the circumferential direction of the cleaning cylinder of the crushing and cleaning component of the present invention can guide the discarded plastic blocks of different densities that are crushed by the double-axis crushing equipment and reach the surface of the cleaning liquid and rotate with the cleaning liquid into the cleaning liquid for effective cleaning, thereby preventing the plastic blocks with a density less than that of water from floating on the liquid surface during the cleaning process and failing to be effectively cleaned.

[0020] 2. The crushing and clearing component of the present invention uses a vortex-shaped first drainage net located below the blade and evenly distributed in the circumference in the cleaning cylinder to make the cleaned plastic blocks that enter the cleaning liquid and rotate with the cleaning liquid move along the first drainage net toward the four rows of first discharge ports on the wall of the cleaning cylinder, and a plurality of second drainage nets arranged on the first drainage net accurately guide the cleaned plastic blocks moving along the first drainage net to each first discharge port in a corresponding row and make the cleaned plastic blocks enter the corresponding shell of the drainage and air-drying component through the first discharge port, and the plastic blocks entering the corresponding shell are discharged in the corresponding The cleaning liquid is discharged under the interaction of the two second baffles and the first baffle, and the plastic blocks with the cleaning liquid discharged are discharged into the extrusion pelletizing component through the first discharge pipe under the blowing of dry air sent by the first air pump above. The first filter hole at the bottom of the first discharge pipe can filter out the cleaning liquid in the plastic blocks and recycle it, and the dry air sent by the first air pump can effectively dry the plastic blocks with the cleaning liquid filtered out during the movement of the plastic blocks in the first discharge pipe, thereby ensuring that the crushing and cleaning component can continuously and uninterruptedly clean the plastic blocks, thereby effectively improving the cleaning efficiency of the plastic blocks.

[0021] 3. The extrusion pelletizing component and cooling component of the present invention can pelletize the plastic strips and then water-cool the plastic pellets after the plastic is extruded into plastic strips. The spiral groove in the cooling component can water-cool the large amount of plastic pellets that continuously enter by spiral motion, effectively saving the layout space of the cooling equipment.

[0022] 4. The two sets of double cutters of the extrusion pelletizing assembly of the present invention can effectively pelletize the plastic strips that have just been extruded and are still in a softened state. The air passages on the upper and lower sides of the double cutters can effectively blow the cut softened plastic pellets away from the cutters to prevent the softened plastic pellets from sticking to the double cutters, thereby effectively completing the efficient pelletizing of the softened plastic strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the front side of the present invention; Figure 2 It is a schematic diagram of the rear side of the present invention; Figure 3 is an overall cross-sectional view of the present invention; Figure 4 It is a top-down cross-sectional view of the crushing and cleaning components and the draining and air-drying components; Figure 5 is a cross-sectional view of the distribution state of the blade, the first drainage net, and the second drainage net; Figure 6 It is a side sectional view of the inner structure of the shell; Figure 7 is a cleaning cylinder and a cross-sectional view thereof; Figure 8These are two schematic diagrams of the blade distribution status; Fig. 9 is a schematic diagram of the distribution of the first drainage network and the second drainage network thereon; Fig.10 is the shell and its cross-sectional view; Fig.11 is a schematic diagram of the cooperation between the two second baffles; Fig.12 This is a cross-sectional view of the drainage structure at the lowest point of the first discharge pipe; Fig.13 is a cross-sectional view of the first baffle driving structure; Fig.14 is a cross-sectional view of the second baffle driving structure; Fig.15 are three state diagrams of a first baffle and a second baffle in a housing of a drain and air-dry assembly; Fig.16 is a side cross-sectional view of the extrusion pelletizing assembly; Fig.17 It is a top-down view of the extrusion pelletizing assembly; Fig.18 It is a schematic diagram of the distribution of double cutters on the slide bar; Fig.19 It is the structure of the double cutter and its cross-sectional view; Fig. 20 is a cross-sectional view of the connection between the airway and the second air supply pipe; Fig.21 is a cross-sectional view of a cooling assembly; Fig. 22 It is a schematic diagram of three states of two groups of double cutters cutting pellets; Name of the label in the figure: 100, crushing and cleaning component; 101, cleaning cylinder; 102, first discharge port; 103, shaft sleeve; 104, partition net; 105, blade; 106, first drainage net; 107, second drainage net; 108, first motor; 109, rotating shaft; 110, blade; 111, double-shaft crushing equipment; 200, drainage and air-drying assembly; 201, housing; 202, second discharge port; 203, first air supply pipe; 204, first baffle; 205, first hinge shaft; 206, first gear; 207, second gear; 208, second motor; 209, second baffle; 210, second hinge shaft; 211, third gear; 212, fourth gear; 213, fifth gear; 214, third motor; 215, first ring pipe; 216, first discharge pipe; 217, first filter hole; 218, drainage channel; 219, first water tank; 220, first drainage pipe; 221, first water pump; 222, first air pump; 223, fork; 224, second ring pipe; 300, extrusion pelletizing assembly; 301, expansion sleeve; 302, extrusion plate; 303, extrusion hole; 304, frame; 305, guide sleeve; 306, slide rod; 307, connecting rod; 308, rack; 309, sixth gear; 310, reciprocating drive assembly; 311, double cutter; 312, airway; 313, exhaust port; 314, guide plate; 315, second air supply pipe; 316, second air pump; 317, hopper; 318, second discharge pipe; 319, plastic strip; 320, extruder; 321, separation structure; 400, cooling assembly; 401, spiral groove; 402, straight groove; 403, second filter hole; 404, second water tank; 405, second drain pipe; 406, second water pump. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0026] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] like Figure 1-22 As shown, a plastic pipe recycling granulation equipment is used for crushing, cleaning and extruding granulation of waste plastics, including: The crushing and cleaning component 100 is used for crushing and continuously and effectively cleaning waste plastics of different densities.

[0028] The draining and air-drying component 200 is used to intermittently drain the cleaning liquid from the cleaned plastic blocks and effectively air-dry the discharged plastic blocks. The draining and air-drying component 200 has the characteristic of low loss of cleaning liquid.

[0029] The extrusion pelletizing assembly 300 is used to extrude plastic strips 319 from the air-dried plastic block and effectively pelletize the extruded softened plastic strips 319 .

[0030] The cooling assembly 400 is used for water cooling the plastic pellets, and the cooling assembly 400 has the characteristic of requiring a small layout space.

[0031] In a further embodiment, Figure 1-Figure 9 As shown, the crushing and cleaning assembly 100 includes a cleaning cylinder 101 suspended by a bracket, a double-axis crushing device 111 is arranged above the cleaning cylinder 101, a plurality of circumferentially evenly distributed inclined blades 105 are arranged at the upper part of the cleaning cylinder 101, and a plurality of vortex-type blades 105 are arranged circumferentially below the blades 105, which are coaxial with the cleaning cylinder 101 and guide the cleaning liquid rotating in the cleaning cylinder 101 to the direction of the first discharge port 102 corresponding to a row on the cylinder wall of the cleaning cylinder 101. A first drainage net 106, on the convex surface of which a plurality of second drainage nets 107 are arranged for guiding the rotating cleaning liquid to the first discharge port 102, a shaft sleeve 103 is arranged at the bottom of the cleaning cylinder 101, a rotating shaft 109 connected to a first motor 108 on the bracket is rotatably arranged in the shaft sleeve 103, a plurality of blades 110 are circumferentially arranged on the upper end of the rotating shaft 109, and a partition net 104 is arranged between the blades 110 and the first drainage net 106.

[0032] In a further embodiment, Figure 5 , Figure 6 , Fig.10 , Fig.11 , Fig.12As shown, the drainage and air-drying component 200 includes a plurality of shells 201 corresponding to the first drainage nets 106 one by one, and the shells 201 are arranged on the outer wall of the cleaning cylinder 101 at a row of first discharge ports 102 corresponding to the corresponding first drainage nets 106. A first baffle 204 is hinged in the shell 201 through a vertical first hinge shaft 205, which divides the shell 201 into two spaces and is driven by a second motor 208. One side space of the first baffle 204 is connected to the corresponding row of first discharge ports 102, and the top and bottom of the other side space of the first baffle 204 are respectively provided with a first air supply pipe 203 and a second discharge port 202. The first discharge port 102 side of the shell 201 divided by the first baffle 204 is connected to the first discharge port 102 of the corresponding row. Two second baffles 209 are symmetrically hinged in the space through a vertical second hinge shaft 210 to push the plastic blocks discharged from the first discharge port 102 toward the first baffle 204 and are driven by a third motor 214. A fork 223 is provided on the end side of the second baffle 209. The first air supply pipe 203 is connected to the second annular pipe 224. The second annular pipe 224 is connected to the first air pump 222 arranged on the outer wall of the cleaning cylinder 101 through a pipeline. The second discharge port 202 is connected to the first annular pipe 215 arranged on the outer wall of the cleaning cylinder 101. The first annular pipe 215 is provided with an S-shaped first discharge pipe 216 connected thereto, and the bottom wall of the first discharge pipe 216 is provided with densely distributed first filter holes 217.

[0033] In a further embodiment, Figure 1 , Figure 2 , Figure 3 , Fig.12 As shown, the outer wall of the first discharge pipe 216 is provided with a first water tank 219 connected to the first filter hole 217 through a drainage channel 218, and the wall surface of the water tank is provided with a first liquid discharge pipe 220 for discharging liquid into the cleaning cylinder 101, and the first liquid discharge pipe 220 is provided with a first water pump 221.

[0034] In a further embodiment, Fig.13 As shown, a first gear 206 is disposed at the upper end of the first hinge shaft 205 , and the first gear 206 is meshed with a second gear 207 disposed on the output shaft of the second motor 208 on the housing 201 .

[0035] In a further embodiment, Fig.14 As shown, a third gear 211 is provided on the two second hinge shafts 210 corresponding to the two second baffles 209 in the shell 201, and the two third gears 211 are meshed with the two fourth gears 212 on the shell 201 one by one, and the two fourth gears 212 are transmission connected by two mutually meshing fifth gears 213, and the shaft where the fifth gear 213 is located is transmission connected to the third motor 214 on the shell 201.

[0036] In a further embodiment, Figure 1 , Figure 2 , Figure 3 , Fig.16 , Fig.17 , Fig.18 , Fig.19 As shown, the extrusion pelletizing assembly 300 includes an extruder 320, the extrusion end of the extruder 320 is provided with a flaring sleeve 301, the lower end of the flaring sleeve 301 is provided with an extrusion plate 302, the extrusion plate 302 is provided with a plurality of rows of extrusion holes 303, the flaring sleeve 301 is provided with a frame 304, the frame 304 is symmetrically provided with two pairs of guide sleeves 305, each pair of the guide sleeves 305 is horizontally slidable with a slide bar 306, the two slide bars 306 are connected to a rack 308 through a connecting rod 307, the frame 304 is provided with a reciprocating drive assembly 310, the reciprocating drive assembly 310 A sixth gear 309 meshing with two racks 308 is provided on the output shaft of 10, and a plurality of double cutters 311 are arranged at intervals on the two slide bars 306. The double cutters 311 on the two slide bars 306 are staggered, and the gaps between adjacent double cutters 311 correspond to a corresponding row of extrusion holes 303 on the extrusion plate 302. Separation structures 321 are provided on the upper and lower sides of the double cutters 311 to prevent them from sticking to plastic pellets. A hopper 317 is provided below the double cutters 311, and the lower end of the hopper 317 is provided on the second discharge pipe 318 that guides the plastic pellets to the cooling assembly 400.

[0037] In a further embodiment, Fig.17 , Fig.18 , Fig.19 , Fig. 20 As shown, the separation structure 321 includes an air duct 312 of the same length as the double cutter 311, and the air duct 312 is arranged on the upper and lower sides of the double cutter 311. The air duct 312 is connected to the second air pump 316 on the corresponding connecting rod 307 through a second air supply pipe 315 buried in the double cutter 311 and the sliding rod 306, and both sides of the air duct 312 are densely provided with exhaust ports 313 for supplying air to the corresponding side blades of the corresponding double cutter 311.

[0038] In a further embodiment, Fig.19 As shown, guide plates 314 are provided on both sides of the air passage 312 to enable the air discharged from the corresponding side exhaust ports 313 to move horizontally.

[0039] In a further embodiment, Figure 1 , Figure 2 , Figure 3 , Fig.21As shown, the cooling component 400 includes a spiral groove 401 suspended by a bracket, a straight groove 402 is provided at the lower end of the spiral groove 401, second filter holes 403 are densely distributed at the middle bottom of the straight groove 402, a second water tank 404 connected to the second filter holes 403 is provided on the outer side of the bottom of the straight groove 402, a second drainage pipe 405 for circulating water to the upper end of the spiral groove 401 is provided on the wall surface of the second water tank 404, and a second water pump 406 is provided on the second drainage pipe 405.

[0040] The blades 105 evenly distributed in the circumferential direction of the cleaning cylinder 101 of the crushing and cleaning component 100 of the present invention can guide the discarded plastic blocks of different densities that are crushed by the double-axis crushing device 111 and reach the surface of the cleaning liquid and rotate with the cleaning liquid into the cleaning liquid for effective cleaning, thereby preventing the plastic blocks with a density less than that of water from floating on the liquid surface and not being effectively cleaned during the cleaning process. The crushing and clearing component of the present invention uses the vortex-shaped first drainage net 106 located below the blade 105 in the cleaning cylinder 101 and evenly distributed in the circumferential direction to make the cleaned plastic blocks that enter the cleaning liquid and rotate with the cleaning liquid move along the first drainage net 106 toward the four rows of first discharge ports 102 on the wall of the cleaning cylinder 101, and the plurality of second drainage nets 107 arranged on the first drainage net 106 accurately guide the cleaned plastic blocks moving along the first drainage net 106 to each of the first discharge ports 102 in a corresponding row and make the cleaned plastic blocks enter the corresponding shell 201 of the drainage and air-drying component 200 through the first discharge port 102 and enter the corresponding shell 201. The plastic block discharges the cleaning liquid under the interaction of the corresponding two second baffles 209 and the first baffle 204. The plastic block that discharges the cleaning liquid is discharged into the extrusion pelletizing component 300 through the first discharge pipe 216 under the blowing of the dry air sent by the first air pump 222 above. The first filter hole 217 at the bottom of the first discharge pipe 216 can filter out the cleaning liquid in the plastic block and recycle it, and the dry air sent by the first air pump 222 can effectively dry the plastic block from which the cleaning liquid is filtered out during the movement of the plastic block in the first discharge pipe 216, ensuring that the crushing and cleaning component 100 can continuously and uninterruptedly clean the plastic block, effectively improving the cleaning efficiency of the plastic block. The extrusion pelletizing component 300 and the cooling component 400 in the present invention can pelletize the plastic strips 319 first and then water-cool the plastic pellets after the plastic is extruded into plastic strips 319. The spiral groove 401 in the cooling component 400 can water-cool the large amount of plastic pellets that continue to enter in the spiral motion, effectively saving the layout space of the cooling equipment. The two groups of double cutters 311 of the extrusion pelletizing assembly 300 in the present invention can effectively pelletize the plastic strips 319 that have just been extruded and are still in a softened state. The air ducts 312 on the upper and lower sides of the double cutter 311 can effectively blow the cut softened plastic pellets away from the cutter to prevent the softened plastic pellets from sticking to the double cutter 311, thereby effectively completing the efficient pelletizing of the softened plastic strips 319.

[0041] The operation process of the present invention is as follows: In the initial state, Fig.15 As shown, the two second baffles 209 in each housing 201 of the drain and air dry assembly 200 are in an open state and the movable end of the second baffle 209 is located at one side of the corresponding first discharge port 102, and the first baffle 204 is in a closed state. Fig. 22As shown, the adjacent double cutters 311 in the extrusion pelletizing assembly 300 are in an open state. In the initial state, a proper amount of cleaning liquid is filled in the cleaning cylinder 101. The space on the side of the first discharge port 102 of the housing 201 in the drain and air drying assembly 200 is filled with cleaning liquid.

[0042] When the present invention is used to crush, clean and extrude waste plastics, water is first injected into the spiral groove 401 from the top of the spiral groove 401 in the cooling component 400 and the second water pump 406 is started at the same time to ensure that there is always water flowing in the spiral groove 401 in the cooling component 400, and the water reaching the straight groove 402 enters the second water tank 404 through the second filter hole 403, and the second water pump 406 circulates and discharges the water in the second water tank 404 into the spiral groove 401. At the same time, the first motor 108 is started, so that the first motor 108 drives the blade 110 to rotate through the rotating shaft 109, and the blade 110 drives the cleaning liquid in the cleaning cylinder 101 to rotate and roll up and down like the water in the pulsator washing machine, and the partition net 104 can effectively prevent the solid particles in the upper cleaning liquid from entering the blade 110 and causing damage to the blade 110.

[0043] Next, the waste plastics of different densities are broken into plastic blocks by the double-axis crushing device 111, and the plastic blocks of different densities continuously fall into the cleaning barrel 101. The tumbling and rotating cleaning liquid drives the plastic blocks to tumble and rotate. The plastic blocks with a density less than that of water that tumble and rotate with the cleaning liquid enter the cleaning liquid under the guidance of the blade 105 for effective cleaning, while the plastic blocks with a density greater than that of water sink into the cleaning liquid by themselves to complete effective cleaning.

[0044] The plastic blocks that have been cleaned in the cleaning liquid move toward the first discharge port 102 of the wall of the cleaning cylinder 101 driven by the cleaning liquid and guided by the first drainage net 106 and the second drainage net 107 on the first drainage net 106 and enter the shell 201 of the drainage and air-drying component 200 through the first discharge port 102. The plastic blocks that enter the shell 201 are gradually concentrated between the two second baffles 209. When the amount of plastic blocks between the two second baffles 209 in the shell 201 reaches a certain amount, all the third motors 214 are started, and each third motor 214 drives the two second baffles 209 to close through the corresponding fifth gear 213, fourth gear 212, third gear 211 and second hinge shaft 210. The forks 223 of the two second baffles 209 cross each other and push the plastic blocks concentrated in the shell 201 into the closed space formed by the first baffle 204 and the two second baffles 209. At the same time, the plastic blocks and cleaning liquid that continue to enter the shell 201 from the first discharge port 102 are blocked from continuing to enter between the two second baffles 209, so that the two second baffles 209 close the space at the first discharge port 102 and prevent the cleaning liquid in the cleaning cylinder 101 from leaking.

[0045] Then, the second motor 208 is started, and the second motor 208 drives the first baffle 204 to open through the second gear 207 and the first hinge shaft 205, and the plastic blocks and cleaning liquid originally located in the closed space formed by the first baffle 204 and the two second baffles 209 fall into the second discharge port 202 at the bottom of the shell 201. Next, the first air pump 222 is started, and the first air pump 222 blows dry air into the shell 201 through the second annular tube 224 and the first air supply pipe 203. The dry air entering the shell 201 blows the plastic blocks in the second discharge port 202 at the bottom of the shell 201 into the first discharge pipe 216 through the first annular tube 215. The plastic blocks entering the first discharge pipe 216 enter the extruder 320 under the blowing of the first air pump 222.

[0046] When the plastic block moves in the first discharge pipe 216 and reaches the first filter hole 217 at the lowest point of the first discharge pipe 216, the cleaning liquid in the plastic block enters the first water tank 219 through the first filter hole 217. The plastic block from which the cleaning liquid has been removed is effectively air-dried by the dry air blown by the first air pump 222. The air-dried plastic block enters the extruder 320 for extrusion.

[0047] When the cleaning liquid in the first water tank 219 reaches a certain amount, the first water pump 221 is started, and the first water pump 221 recycles the cleaning liquid in the first water tank 219 to the cleaning cylinder 101 through the first liquid discharge pipe 220. When the plastic blocks in the second discharge port 202 in the shell 201 are completely discharged, the first air pump 222 stops running, and the second motor 208 is started. The second motor 208 drives the first baffle 204 to reset and close through a series of transmissions. After the first baffle 204 is closed, the third motor 214 is started, and the third motor 214 drives the two second baffles 209 in the shell 201 to reset and open through a series of transmissions. At this point, the gap size of the fork 223 at the end of the second baffle 209 is smaller than the minimum particle size of the plastic block to ensure that the fork 223 of the second baffle 209 is During the closing process, the plastic blocks in the cleaning liquid can be effectively pushed into the space formed by the first baffle 204 and the two second baffles 209. After the second baffle 209 is opened and reset, a small amount of plastic blocks enter the triangular space formed by the second baffle 209, the wall of the shell 201 and the wall of the cleaning cylinder 101 without affecting the operation of the second baffle 209. At the same time, during the opening and resetting process of the two second baffles 209, only a small amount of plastic blocks in the cleaning liquid enters the triangular space formed by the second baffle 209, the wall of the shell 201 and the wall of the cleaning cylinder 101 under the disturbance of the cleaning liquid.

[0048] After the two second baffles 209 in the housing 201 are opened and reset, the plastic blocks that have been cleaned in the cleaning cylinder 101 continue to move into the housing 201 through the first discharge port 102 for accumulation.

[0049] like Fig. 22 As shown, the extruder 320 in the extrusion pelletizing assembly 300 melts and extrude the dry clean plastic block from the first discharge pipe 216, and the extruded molten plastic is formed into a softened plastic strip 319 through the extrusion hole 303 on the extrusion plate 302 at the lower end of the flaring sleeve 301. When the plastic strip 319 passes through the two double cutters 311 on both sides of it for a certain distance, the reciprocating drive assembly 310 is started, and the reciprocating drive assembly 310 drives the two sets of double cutters 311 on the two slide bars 306 to reciprocate through the sixth gear 309 and the two racks 308 and pelletizes the softened plastic strip 319. When the two adjacent double cutters 311 complete the pelletizing of the plastic strip When pelletizing at 319, the second air pump 316 delivers air into the two air passages 312 on the upper and lower sides of the double-man cutter 311 through the second air supply pipe 315. The air entering the two air passages 312 on the upper and lower sides of the double-man cutter 311 is blown out horizontally through the exhaust ports 313 on both sides of the corresponding air passages 312 and under the guidance of the corresponding side guide plates 314. The air blown out horizontally from both sides of the air passages 312 blows the plastic pellets cut by the double-man cutter 311 away from the blade of the double-man cutter 311, preventing the plastic pellets that are still in a softened state from sticking to the double-man cutter 311 and causing the outer sides of the plastic pellets to cool and initially form a harder skin, thereby preventing the plastic pellets from sticking to each other when they are concentrated in the hopper 317.

[0050] The plastic pellets produced by the extrusion pelletizing assembly 300 and still in a softened state fall into the hopper 317. The plastic pellets entering the hopper 317 enter the cold water in the spiral groove 401 through the second discharge pipe 318. Driven by the water flow, the plastic pellets spirally move along the spiral groove 401 to the straight groove 402 and are effectively cooled and shaped. When the plastic pellets reaching the straight groove 402 pass through the second filter hole 403, the cold water in the straight groove 402 all enters the second water tank 404 through the filter hole to complete the dehydration of the plastic pellets. The dehydrated plastic pellets in the straight groove 402 roll along the straight groove 402 to the plastic pellet centralized recovery container.

Claims

1. A plastic pipe recycling granulation equipment, used for crushing, cleaning and extrusion granulation of waste plastics, characterized in that: include: Crushing and cleaning components, used to crush and continuously and effectively clean waste plastics of different densities; A drain and air-dry component is used to intermittently drain the cleaning liquid from the cleaned plastic blocks and effectively air-dry the discharged plastic blocks. The drain and air-dry component has the characteristics of low loss of cleaning liquid; An extrusion pelletizing component is used to extrude plastic strips from air-dried plastic blocks and effectively pelletize the extruded softened plastic strips; The cooling component is used for water cooling plastic pellets, and the cooling component has the characteristic of small layout space.

2. The plastic pipe recycling granulation equipment according to claim 1, characterized in that: The crushing and cleaning component includes a cleaning cylinder installed in the air through a bracket, a double-axis crushing device is arranged above the cleaning cylinder, a plurality of circumferentially evenly distributed inclined blades are arranged on the upper part of the cleaning cylinder, a plurality of vortex-type first drainage nets are arranged circumferentially below the blades, which are coaxial with the cleaning cylinder and guide the rotating cleaning liquid in the cleaning cylinder to a corresponding row of first discharge ports on the wall of the cleaning cylinder, a plurality of second drainage nets are arranged on the convex surface of the first drainage net to guide the rotating cleaning liquid to the first discharge port, a shaft sleeve is arranged at the bottom of the cleaning cylinder, a rotating shaft connected to the first motor on the bracket is rotatably arranged in the shaft sleeve, a plurality of blades are arranged circumferentially on the upper end of the rotating shaft, and a partition net is arranged between the blades and the first drainage net.

3. The plastic pipe recycling granulation equipment according to claim 1, characterized in that: The liquid drainage and air drying component includes a plurality of shells corresponding to the first drainage nets one by one, the shells are arranged on the outer wall of the cleaning cylinder at a row of first discharge ports corresponding to the corresponding first drainage nets, a first baffle which divides the shell into two spaces and is driven by a second motor is hinged in the shell through a vertical first hinge axis, a space on one side of the first baffle is connected to a corresponding row of first discharge ports, a first air supply pipe and a second discharge port are respectively arranged at the top and bottom of the space on the other side of the first baffle, two second baffles which push the plastic blocks discharged from the first discharge port toward the first baffle and are driven by a third motor are symmetrically hinged through a vertical second hinge axis in the first discharge port side space divided by the first baffle in the shell, a fork is arranged at the end side of the second baffle, the first air supply pipe is connected to the second annular pipe, the second annular pipe is connected to the first air pump arranged on the outer wall of the cleaning cylinder through a pipeline, the second discharge port is connected to the first annular pipe arranged on the outer wall of the cleaning cylinder, an S-shaped first discharge pipe which is connected thereto is arranged on the first annular pipe, and a densely distributed first filter hole is opened on the bottom wall of the first discharge pipe.

4. The plastic pipe recycling granulation equipment according to claim 3 is characterized in that: The outer wall of the first discharge pipe is provided with a first water tank connected with the first filter hole through a drainage channel, the wall surface of the water tank is provided with a first liquid discharge pipe for discharging liquid into the cleaning cylinder, and the first liquid discharge pipe is provided with a first water pump.

5. The plastic pipe recycling granulation equipment according to claim 3, characterized in that: A first gear is disposed at the upper end of the first hinge shaft, and the first gear is meshed with a second gear disposed on the output shaft of the second motor on the housing.

6. The plastic pipe recycling granulation equipment according to claim 3, characterized in that: A third gear is provided on the two second hinge shafts corresponding to the two second baffles in the shell, and the two third gears are meshed with the two fourth gears on the shell one by one. The two fourth gears are connected by two fifth gears meshing with each other, and the shaft where the fifth gear is located is connected to the third motor on the shell.

7. The plastic pipe recycling granulation equipment according to claim 1, characterized in that: The extrusion pelletizing assembly comprises an extruder, the extrusion end of the extruder is provided with a flaring sleeve, the lower end of the flaring sleeve is provided with an extrusion plate, a plurality of rows of extrusion holes are opened on the extrusion plate, the flaring sleeve is provided with a frame, two pairs of guide sleeves are symmetrically provided on the frame, a sliding rod is horizontally slidable in each pair of the guide sleeves, the two sliding rods are connected with racks through connecting rods, a reciprocating drive assembly is provided on the frame, a sixth gear meshing with the two racks is provided on the output shaft of the reciprocating drive assembly, a plurality of double-man cutters are arranged at intervals on the two sliding rods, the double-man cutters on the two sliding rods are staggered, and the gaps between adjacent double-man cutters correspond to a corresponding row of extrusion holes on the extrusion plate, the upper and lower sides of the double-man cutters are provided with separation structures to prevent them from sticking to plastic pellets, a hopper is provided below the double-man cutter, and the lower end of the hopper is provided on the second discharge pipe that guides the plastic pellets to the cooling assembly.

8. The plastic pipe recycling granulation equipment according to claim 7, characterized in that: The separation structure includes an air duct of the same length as the double-man cutter, and the air duct is arranged on the upper and lower sides of the double-man cutter. The air duct is connected to the second air pump on the corresponding connecting rod through a second air supply pipe buried in the double-man cutter and the sliding rod. Exhaust ports for supplying air to the corresponding side blades of the corresponding double-man cutter are densely distributed on both sides of the air duct.

9. The plastic pipe recycling granulation equipment according to claim 8, characterized in that: Both sides of the air passage are provided with guide plates for causing the air discharged from the corresponding side exhaust ports to move horizontally.

10. The plastic pipe recycling granulation equipment according to claim 1, characterized in that: The cooling component includes a spiral groove suspended by a bracket, a straight groove is provided at the lower end of the spiral groove, second filter holes are densely distributed at the middle bottom of the straight groove, a second water tank connected to the second filter holes is provided on the outer side of the bottom of the straight groove, a second drainage pipe for circulating water to the upper end of the spiral groove is provided on the wall surface of the second water tank, and a second water pump is provided on the second drainage pipe.

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