Mixing and extruding equipment for PP modified and regenerated special material

Abstract

The invention discloses PP modified regeneration special material mixing extrusion equipment, and relates to the technical field of extruders, the PP modified regeneration special material mixing extrusion equipment comprises an extruder main body, a connecting block is mounted at the discharge end of the extruder main body, an extrusion mold is mounted at the discharge end of the connecting block, and a switching plate is slidably arranged on one side of the connecting block; and mounting sliding seats are arranged in mounting holes in one sides of the switching plates, filter screen plates are fixedly arranged in the middles of the mounting sliding seats, a triggering mechanism is arranged in the protective outer box, a back flushing head is arranged in the protective outer box, and a recycling mechanism is arranged in the protective outer box. The mounting sliding seat is arranged on one side of the switching plate, the filter screen plate is fixedly arranged in the mounting sliding seat, impurities in molten feed liquid can be filtered conveniently, switching of the filter screen plate can be automatically completed through the trigger mechanism, and the filter screen plate can be cleaned conveniently and the feed liquid can be recycled conveniently by arranging the back flushing head and the collecting head.

Description

Technical Field

[0001] The invention relates to the technical field of extruders, in particular to a mixing and extruding device for PP modified recycled special materials. Background Art

[0002] PP recycled material refers to the recycled material of polypropylene plastic. Most of PP comes from daily necessities. When recycling, the raw materials need to be crushed, cleaned, dried, mixed with colors, granulated and other processes. Since PP raw materials are recycled and reused, some impurities will still exist after being cleaned and processed. During the extrusion molding process of the extruder, the impurities inside the raw materials after melting can easily cause blockage of the die head, resulting in the subsequent plastic extruder being unable to work normally, which not only reduces the processing quality, but also reduces production efficiency.

[0003] The announcement number is CN117124566B, which discloses a filtering screw extruder. The extruder is provided with a filter seat and a filter element. When the material passes through the filter channel, the filter element can filter the material, thereby effectively separating impurities in the material. However, when the extruder is in use, it is necessary to manually determine whether the filter element is blocked. When the filter element is blocked, it cannot be replaced in time, causing the extruder to interrupt processing. In addition, the extruder is not provided with a part for cleaning or automatically replacing the filter element. Parts, because the filter element temperature is high after being switched, if the staff replaces or cleans the filter element immediately, it is easy to get burned. If the filter element is replaced after automatically cooling, the feed liquid will solidify, thereby increasing the difficulty of replacing the filter element. At the same time, when filtering the filter element, a large amount of melted feed liquid will be carried between the filter seat and the filter element. The above-mentioned extruder is not equipped with collection and protection components, and the temperature of the feed liquid after melting is high. When the filter element is switched, the above-mentioned extruder has poor safety and will cause waste of feed liquid.

[0004] Based on this, a PP modified recycled special material mixing and extrusion equipment is now provided, which can eliminate the disadvantages of the existing devices. Summary of the invention

[0005] The purpose of the present invention is to provide a PP modified recycled special material mixing and extrusion equipment to solve the problem that it is inconvenient to automatically clean the filter component and it is inconvenient to recover the material liquid in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A PP modified recycled special material mixing and extrusion equipment, comprising an extruder body, the extruder body is fixedly arranged on the upper end of a mounting base, the feeding end of the extruder body is connected to a mixing box, the discharge end of the extruder body is installed with a connecting block, the discharge end of the connecting block is installed with an extrusion die, one side of the connecting block is provided with a sliding perforation, a switching plate is slidably arranged in the sliding perforation, one side of the switching plate is symmetrically provided with mounting holes, the mounting holes are provided with mounting slides, the middle of the mounting slides are fixedly provided with filter screen plates, one side of the switching plate is provided with a threaded hole, the threaded hole is matched with a threaded rod, the threaded rod is rotatably arranged inside a protective outer box, one end of the threaded rod is fixedly connected to the output end of a servo motor, the bottom end of the protective outer box is provided with a trigger mechanism for controlling the servo motor to automatically switch the switching plate, the inside of the protective outer box and the two filter screen plates are provided with back-blowing heads at non-working positions, the two back-blowing head input ends are connected with the output end of an industrial hot air blower, and the inside of the protective outer box and the position of one end of the back-blowing head are provided with a recovery mechanism for collecting impurities and liquid.

[0007] On the basis of the above technical solution, the present invention also provides the following optional technical solution: In an optional solution: the trigger mechanism includes a pressure sensor, the pressure sensor is fixedly arranged at the bottom end of the protective outer box, a trigger plate is provided on one side of the trigger end of the pressure sensor, first guide slide bars are slidably provided on both sides of the trigger plate, the first guide slide bars are fixedly arranged at the bottom end of the protective outer box, a second return spring is fixedly provided between one side of the trigger plate and one end of the first guide slide bar, a sliding groove is provided at the bottom end of the connecting block corresponding to the position of the trigger plate, a fixing column is fixedly provided on one side of the trigger plate, a limiting ring groove is provided at the inside of the switching plate corresponding to the position of the mounting slide seat, and the mounting slide seat is slidably provided at the limit ring groove. The limiting ring groove is in the center, and a circular array is provided on one side of the mounting slide seat. A first return spring is installed in each of the spring grooves. The other end of the first return spring is fixedly connected to one side of the limiting ring groove. A fixing rod is provided on one side of the spring groove at a position coaxial with the fixing column. The pressure sensor is electrically connected to the controller. The controller is fixed on the upper end of the protective outer box, the protective outer box is fixed on the upper end of the support seat, and the support seat is fixed on the upper end of the mounting base. A sliding hole is provided on one side of the switching plate, and a second guide slide rod is slidably provided in the sliding hole, and the second guide slide rod is fixed inside the protective outer box.

[0008] In an optional solution: a guide groove is provided inside the connection block at a position corresponding to the position of the fixing rod, and both ends of the guide groove are inclined.

[0009] In an optional scheme: sealing plates are fixedly provided at the positions corresponding to the two ends of the sliding perforations on both sides of the connecting block, the sealing plates are tightly arranged on the switching plates, one end of the sealing plates is tightly arranged on the back-blowing head, an expansion tube is connected to the discharge end of the extruder body, a sliding block is slidingly provided inside the expansion tube, the bottom end of the sliding block is arc-shaped, a limiting slide rod is fixedly provided on the upper end of the sliding block, the limiting slide rod is slidably arranged in the perforation at the upper end of the expansion tube, and a third reset spring is provided between the upper end of the sliding block and the upper end inside the expansion tube.

[0010] In an optional scheme: the recycling mechanism includes a collecting head, and the two collecting heads are coaxially arranged with the two back-blowing heads respectively, the back-blowing heads and the collecting heads are symmetrically arranged, and one end of the back-blowing head and the collecting head are respectively tightly attached to the two sides of the switching plate, and the collecting head is tightly attached to one end of the sealing plate, and the output end of the collecting head is connected to a discharge pipe, and the other end of the discharge pipe is connected to the input end of the recycling box, and a separation grid is provided inside the recycling box, and the separation grid is fixed inside the fixed frame, and the fixed frame is slidably arranged inside the recycling box, and a collecting box is provided below the separation grid, and the collecting box is slidably arranged inside the recycling box, and a plurality of heat-conducting fins are equidistantly provided on both sides of the collecting box, and a plurality of exhaust holes are provided at the bottom of the recycling box, and the industrial hot air blower is fixed at the upper end of the mounting base.

[0011] In an optional solution: a load-bearing plate is closely attached to the bottom of the collection box, the bottom of the load-bearing plate is fixedly connected to the output ends of several spring telescopic rods, several of the spring telescopic rods are fixedly arranged at the bottom of the recycling box, a weighing sensor is fixedly arranged at the bottom of the recycling box, and the weighing sensor is electrically connected to the controller.

[0012] In an optional solution: a sealing baffle is tightly attached to one end of the back-blowing head and the collecting head, and the sealing baffle on the same side is fixed on a mounting column, and rotating plates are rotatably provided at both ends of the mounting column, and the rotating plates are fixed to the bottom end of the inner part of the protective outer box, and a torsion spring is provided between one side of the sealing baffle and one side of the rotating plate.

[0013] In an optional scheme: a fixed plate is fixedly provided at the upper end of the mixing box, a rotating sleeve shaft is rotatably provided in the mounting hole at the upper end of the fixed plate, a mounting shaft is rotatably provided in the middle of the rotating sleeve shaft, a spiral plate is provided at one end of the mounting shaft at a position corresponding to the discharge end of the mixing box, a mixing frame is symmetrically fixedly provided at one end of the mounting shaft, a plurality of first mixing plates are fixedly provided on the inner side of the mixing frame, a plurality of second mixing plates are fixedly provided on the outer side of the rotating sleeve shaft, the first mixing plates and the second mixing plates are alternately arranged, a first bevel gear is fixedly provided at one end of the rotating sleeve shaft, a second bevel gear is fixedly provided at one end of the mounting shaft, the first bevel gear and the second bevel gear are both meshed with a third bevel gear, the third bevel gear is fixedly provided at the output end of the driving motor, and the driving motor is fixedly provided at the upper end of the fixed plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention symmetrically arranges mounting holes on one side of the switching plate, arranges a mounting slide in the mounting hole, and fixes a filter screen plate inside the mounting slide, so that when the PP modified recycled material is processed, the filter screen plate can filter impurities in the melted liquid, and by arranging a pressure sensor, when one side of the filter screen plate is blocked, the liquid is used to push the mounting slide to move and trigger the pressure sensor, so that the servo motor can automatically complete the switching of the filter screen plate, so that the extruder main body can be convenient for continuous production. At the same time, during the switching process of the switching plate, the expansion tube is used in conjunction with the sliding block, and the liquid accumulated inside the extruder main body can be temporarily stored inside the expansion tube, thereby preventing the pressure at the discharge end of the extruder main body from being too high.

[0015] 2. The present invention symmetrically arranges a back-blowing head and a collecting head inside the protective outer box, and both the back-blowing head and the collecting head are closely arranged with one end of the sealing plate, so that when the switching plate is switched, the residual liquid in the mounting hole is prevented from leaking, and the industrial hot air blower is used to transport high-temperature gas to the back-blowing head to prevent the liquid on the filter screen from cooling and solidifying. At the same time, the gas back-blows the filter screen, making it easy to clean the filter screen, and after cleaning, the filter screen can be kept at a fixed temperature, so as to achieve the purpose of preheating the filter screen, so that the filter screen can be directly switched after switching. The collecting head is connected to the inside of the recycling box, and a separation grid and a collecting box are arranged inside the recycling box to separate impurities from the feed liquid, so as to facilitate the recovery of the feed liquid. The hot air is used to exchange heat with the collecting box to prevent the feed liquid inside the collecting box from solidifying. A sealing baffle is arranged at one end of the backblowing head and the collecting head, so that when the filter screen plate is working, the backblowing head and one end of the collecting head are in a sealed state to prevent the waste of hot air and the backflow of hot air after use, thereby increasing the practicability of the PP modified recycled special material mixing and extrusion equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the installation of the connecting block of the present invention.

[0018] Figure 3 This is a schematic diagram of the installation of the filter screen plate of the present invention.

[0019] Figure 4 It is a schematic diagram of the internal structure of the protective outer box of the present invention.

[0020] Figure 5 It is a schematic diagram of the sealing plate structure of the present invention.

[0021] Figure 6 This is a schematic diagram of the structure of the switching board of the present invention.

[0022] Figure 7 This is a schematic diagram of the installation of the pressure sensor of the present invention.

[0023] Figure 8 It is a schematic diagram of the guide groove structure of the present invention.

[0024] Fig. 9 This is a schematic diagram of the installation of the backblowing head and the collecting head of the present invention.

[0025] Fig.10 It is a schematic diagram of the sealing baffle structure of the present invention.

[0026] Fig.11 It is a schematic diagram of the rotating state of the sealing baffle of the present invention.

[0027] Fig.12 It is a schematic diagram of the separation grid structure of the present invention.

[0028] Fig.13 This is a schematic diagram of the installation of the weighing sensor of the present invention.

[0029] Fig.14 This is a schematic diagram of the mounting shaft and rotating sleeve shaft structure of the present invention.

[0030] Notes on figure numbers: 11 extruder body, 12 connecting block, 13 extrusion die, 14 mixing box, 15 mounting base, 16 filter screen, 17 mounting slide, 18 switching plate, 19 threaded rod, 20 servo motor, 21 protective outer box, 22 support seat, 23 sealing plate, 24 first return spring, 25 fixed rod, 26 trigger plate, 27 second return spring, 28 pressure sensor, 29 guide groove, 30 expansion tube, 31 sliding block, 32 third return spring, 33 back blowing head, 34 collecting head, 35 industrial hot air blower, 36 recovery box, 37 separation grid, 38 collecting box, 39 spring telescopic rod, 40 weighing sensor, 41 controller, 42 sealing baffle, 43 torsion spring, 44 mounting shaft, 45 spiral plate, 46 rotating sleeve shaft, 47 driving motor. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. Example 1

[0032] In one embodiment, Figure 1-Figure 14 As shown, a PP modified recycled special material mixing and extrusion equipment comprises an extruder body 11, the extruder body 11 is fixedly arranged on the upper end of a mounting base 15, the feeding end of the extruder body 11 is connected to a mixing box 14, the discharge end of the extruder body 11 is installed with a connecting block 12, the discharge end of the connecting block 12 is installed with an extrusion die 13, one side of the connecting block 12 is provided with a sliding through hole, a switching plate 18 is slidably arranged in the sliding through hole, one side of the switching plate 18 is symmetrically provided with mounting holes, the mounting holes are provided with mounting slides 17, the middle of the mounting slides 17 are fixed with filter screen plates 16, one side of the switching plate 18 is provided with a threaded hole, the threaded hole is matched with a threaded rod 19, the threaded rod 19 is rotated Inside the protective outer box 21, one end of the threaded rod 19 is fixedly connected to the output end of the servo motor 20, and a trigger mechanism for controlling the servo motor 20 to automatically switch the switch plate 18 is provided at the bottom of the protective outer box 21. Back-blowing heads 33 are provided inside the protective outer box 21 and at the non-working positions of the two filter screens 16. The input ends of the two back-blowing heads 33 are connected to the output end of the industrial hot air blower 35. A recovery mechanism for collecting impurities and liquid feed is provided inside the protective outer box 21 and at one end of the back-blowing head 33. The trigger mechanism facilitates the automatic switching of the filter screen 16 when the filter screen 16 is blocked. The recovery mechanism facilitates the collection of impurities and liquid feed, and can also separate and recover impurities from liquid feed. The trigger mechanism includes a pressure sensor 28, which is fixed at the bottom end of the protective outer box 21. A trigger plate 26 is provided on one side of the trigger end of the pressure sensor 28. First guide slide bars are slidably provided on both sides of the trigger plate 26. The first guide slide bars are fixed at the bottom end of the protective outer box 21. A second return spring 27 is fixed between one side of the trigger plate 26 and one end of the first guide slide bar. A sliding groove is provided at the bottom end of the connecting block 12 corresponding to the position of the trigger plate 26. A fixing column is fixed on one side of the trigger plate 26. A switch plate 18 is provided at the corresponding position of the mounting slide seat 17. There is a limiting ring groove, the mounting slide 17 is slidably arranged in the limiting ring groove, a circular array is arranged on one side of the mounting slide 17 with a plurality of spring grooves, a first return spring 24 is installed in each of the spring grooves, the other end of the first return spring 24 is fixedly connected to one side of the limiting ring groove, a fixing rod 25 is arranged coaxially with the fixed column position on one side of the spring groove, the pressure sensor 28 is electrically connected to the controller 41, the controller 41 is fixedly arranged on the upper end of the protective outer box 21, the protective outer box 21 is fixedly arranged on the upper end of the support seat 22, the support seat 22 is fixedly arranged on the upper end of the mounting base 15, and one side of the switching plate 18 A sliding hole is provided, in which a second guide slide bar is slidably provided, and the second guide slide bar is fixedly provided inside the protective outer box 21. When in use, the extruder body 11 conveys and melts the PP recycled material, so that the melted liquid enters the inside of the connecting block 12, so that the filter screen plate 16 filters the impurities in the liquid, and the filtered impurities enter the inside of the extrusion die 13 and are discharged. When one side of the filter screen plate 16 intercepts too many impurities, the impurities block the filter screen plate 16. As the extruder body 11 continuously conveys the liquid, the installation slide seat 17 slides in the limiting ring groove, and at the same time, the installation slide seat 17 drives the fixed rod 25 to move, and the fixed The fixed rod 25 pushes the trigger plate 26 to move through the fixed column. When the mounting slide 17 is restricted by the limit ring groove and no longer moves, the trigger plate 26 squeezes the pressure sensor 28, so that the controller 41 controls the servo motor 20 to rotate a fixed number of circles, so that the other unused filter screen plate 16 moves to the inside of the connecting block 12 to continue filtering. It is worth noting that the extruder body 11 in the present application is an existing component, and the figure is only a schematic diagram. The specific structure is subject to the actual situation. At the same time, the pressure sensor 28, the controller 41 and the servo motor 20 are also existing components, and the technology is relatively mature, so they will not be repeated here.

[0033] A guide groove 29 is provided inside the connecting block 12 at a position corresponding to the position of the fixing rod 25, and both ends of the guide groove 29 are inclined. When in use, when the switching plate 18 switches the filter screen plate 16, one end of the fixing rod 25 pushes the fixing column to move, so that one end of the fixing rod 25 is inside the guide groove 29. When the switching plate 18 drives the filter screen plate 16 to move, the fixing rod 25 slides inside the guide groove 29. When one end of the fixing rod 25 is in close contact with the inclined end of the guide groove 29, the guide groove 29 guides the fixing rod 25, so that the mounting slide 17 moves to the initial position.

[0034] Sealing plates 23 are fixedly provided at the positions corresponding to the two ends of the sliding perforations on both sides of the connecting block 12. The sealing plates 23 are closely arranged with the switching plate 18. One end of the sealing plate 23 is closely arranged with the back-blowing head 33. The discharge end of the extruder body 11 is connected with an expansion tube 30. A sliding block 31 is slidingly provided inside the expansion tube 30. The bottom end of the sliding block 31 is arc-shaped. A limiting slide bar is fixedly provided on the upper end of the sliding block 31. The limiting slide bar is slidably arranged in the perforation at the upper end of the expansion tube 30. The upper end of the sliding block 31 is between the upper end of the sliding block 31 and the upper end of the expansion tube 30. A third return spring 32 is provided. When in use, when the switch plate 18 is switched, the installation perforation will carry the feed liquid, and the sealing plate 23 is tightly attached to both sides of the switch plate 18, so that the feed liquid is always located in the installation perforation, and when the switch plate 18 is switched, the discharge end of the connecting block 12 is closed, and the feed liquid at the discharge end of the extruder body 11 cannot be discharged at this time. As the feed liquid accumulates at the discharge end of the extruder body 11, the feed liquid pushes the sliding block 31 to slide inside the expansion tube 30. When the filter screen plate 16 is switched, the feed liquid inside the expansion tube 30 is discharged under the action of the third return spring 32.

[0035] The recycling mechanism includes a collecting head 34, and the two collecting heads 34 are coaxially arranged with the two back-blowing heads 33 respectively. The back-blowing heads 33 and the collecting heads 34 are symmetrically arranged. One end of the back-blowing head 33 and the collecting head 34 are respectively tightly attached to the two sides of the switching plate 18, and the collecting head 34 is tightly attached to one end of the sealing plate 23. The output end of the collecting head 34 is connected with a discharge pipe, and the other end of the discharge pipe is connected with the input end of the recycling box 36. A separation grid 37 is provided inside the recycling box 36, and the separation grid 37 is fixed inside the fixed frame, and the fixed frame is slidably arranged inside the recycling box 36. A collecting box 38 is provided below the separation grid 37, and the collecting box 38 is slidably arranged inside the recycling box 36. A number of heat-conducting fins are equidistantly arranged on both sides of the collecting box 38, and a number of exhaust holes are arranged at the bottom of the recycling box 36. The industrial hot air blower 35 is fixedly arranged on the upper end of the mounting base 15. When in use, when the switching plate 18 cuts the filter screen plate 16 After replacement, the blocked filter screen plate 16 moves to the coaxial position of the back-blowing head 33 and the collecting head 34, and at the same time, the industrial hot air blower 35 conveys the air heated to a fixed temperature to the back-blowing head 33, and the back-blowing head 33 discharges the hot air to back-blow the filter screen plate 16. Since the back-blowing head 33 and the collecting head 34 are both in close contact with one end of the sealing plate 23, and the filter screen plate 16 is back-blown by the hot air, the feed liquid and the impurities attached to the filter screen plate 16 enter the collecting head 34, and the collecting head 34 conveys the feed liquid and the impurities to the recovery box 36 through the discharge pipe. The separation grid 37 first separates the feed liquid and the impurities, and the impurities are intercepted at the upper end of the separation grid 37. The feed liquid enters the collection box 38 for collection, and at the same time, the hot air enters the recovery box 36 and is discharged through the exhaust hole. When the hot air is discharged, it passes through the heat-conducting fins, so that the heat is transferred to the collection box 38, so that the feed liquid collected in the collection box 38 is kept warm to prevent the feed liquid from solidifying.

[0036] A load-bearing plate is closely attached to the bottom end of the collecting box 38, and the bottom ends of the load-bearing plate are respectively fixedly connected to the output ends of several spring telescopic rods 39, and several of the spring telescopic rods 39 are fixedly arranged at the bottom end of the inside of the recycling box 36. A weighing sensor 40 is fixedly arranged at the bottom end of the inside of the recycling box 36, and the weighing sensor 40 is electrically connected to the controller 41. When in use, after the collecting box 38 collects liquid for a long time, the weight of the collecting box 38 will increase, causing the load-bearing plate to slide inside the recycling box 36, and at the same time, the weighing sensor 40 transmits the detected value to the controller 41. When the set weight is reached, the controller 41 sends out an alarm to remind the staff to process the liquid inside the collecting box 38. It is worth noting that the weighing sensor 40 in the present application adopts existing components, and the specific working principle and control method are existing methods, which will not be repeated here.

[0037] The back-blowing head 33 and one end of the collecting head 34 are both tightly provided with a sealing baffle 42, and the sealing baffle 42 on the same side is fixed on a mounting column, and rotating plates are rotatably provided at both ends of the mounting column, and the rotating plates are fixed to the bottom end of the inner part of the protective outer box 21, and a torsion spring 43 is provided between one side of the sealing baffle 42 and one side of the rotating plate. When in use, when one filter screen plate 16 is in a working state and the other filter screen plate 16 is in a cleaning state, the back-blowing head 33 and one end of the collecting head 34 that are not being cleaned are closed by the sealing baffle 42. When the switching plate 18 switches the filter screen plate 16, the switching plate 18 pushes the sealing baffle 42 to rotate, so that the sealing baffle 42 is separated from the back-blowing head 33 and one end of the collecting head 34. When the switching plate 18 is switched again, under the action of the torsion spring 43, the sealing baffle 42 again closes one end of the back-blowing head 33 and the collecting head 34. Example 2

[0038] The difference from Example 1 is that a fixing plate is fixedly disposed on the upper end of the mixing box 14, a rotating sleeve shaft 46 is rotatably disposed in the mounting hole on the upper end of the fixing plate, a mounting shaft 44 is rotatably disposed in the middle of the rotating sleeve shaft 46, a spiral plate 45 is disposed at one end of the mounting shaft 44 at a position corresponding to the discharging end of the mixing box 14, a mixing frame is symmetrically fixedly disposed on one end of the mounting shaft 44, a plurality of first mixing plates are fixedly disposed on the inner side of the mixing frame, a plurality of second mixing plates are fixedly disposed on the outer side of the rotating sleeve shaft 46, the first mixing plates and the second mixing plates are alternately disposed, a first bevel gear is fixedly disposed on one end of the rotating sleeve shaft 46, and the mounting shaft 44 is provided with a plurality of first mixing plates. A second bevel gear is fixedly provided at one end of the mounting shaft 44, and the first bevel gear and the second bevel gear are both meshed with the third bevel gear. The third bevel gear is fixedly provided at the output end of the driving motor 47, and the driving motor 47 is fixedly provided at the upper end of the fixed plate. When in use, when the PP material is extruded, the processed raw material is placed inside the mixing box 14, and then the driving motor 47 is started, so that the mounting shaft 44 and the rotating sleeve shaft 46 rotate at the same time, and the rotation directions are opposite. At the same time, the mixing frame and the rotating sleeve shaft 46 mix the raw materials inside the mixing box 14 through the first mixing plate and the second mixing plate respectively, so that the raw materials and the ingredients are evenly mixed.

[0039] The above embodiment discloses a PP modified recycled special material mixing and extrusion equipment, wherein, when working, the extruder body 11 conveys and melts the PP recycled material, so that the melted liquid enters the interior of the connecting block 12, so that the filter screen plate 16 filters the impurities in the liquid, and the filtered impurities enter the interior of the extrusion die 13 and are discharged. When one side of the filter screen plate 16 intercepts too many impurities, the impurities block the filter screen plate 16. As the extruder body 11 continuously conveys the liquid, the mounting slide 17 slides in the limiting ring groove, and the mounting slide 1 7 drives the fixing rod 25 to move, and the fixing rod 25 pushes the trigger plate 26 to move through the fixing column. When the mounting slide 17 is restricted by the limit ring groove and no longer moves, the trigger plate 26 squeezes the pressure sensor 28, so that the controller 41 controls the servo motor 20 to rotate a fixed number of circles, so that another unused filter screen plate 16 moves to the inside of the connecting block 12 to continue filtering. When the switching plate 18 is switched, the discharge end of the connecting block 12 is closed. At this time, the material liquid at the discharge end of the extruder body 11 cannot be discharged. As the material liquid accumulates at the discharge end of the extruder body 11 , so that the liquid pushes the sliding block 31 to slide inside the expansion tube 30. When the filter screen plate 16 is switched, the liquid inside the expansion tube 30 is discharged under the action of the third return spring 32, and the blocked filter screen plate 16 moves to the coaxial position of the back-blowing head 33 and the collecting head 34. At the same time, the industrial hot air blower 35 delivers air heated to a fixed temperature to the back-blowing head 33. The back-blowing head 33 discharges the hot air, so that the filter screen plate 16 is back-blown. Since the back-blowing head 33 and the collecting head 34 are both in close contact with one end of the sealing plate 23, and the filter screen plate is blown by the hot air, the back-blowing head 33 and the collecting head 34 are both in close contact with one end of the sealing plate 23. 16 is back-blown, so that the slurry and the impurities attached to the filter screen plate 16 enter the collecting head 34, and the collecting head 34 transports the slurry and impurities to the recovery box 36 through the discharge pipe. The separation grid 37 first separates the slurry and impurities, and the impurities are intercepted at the upper end of the separation grid 37. The slurry enters the collecting box 38 for collection, and at the same time, hot air enters the recovery box 36 and is discharged through the exhaust hole. When the hot air is discharged, it passes through the heat-conducting fins, so that the heat is transferred to the collecting box 38, so that the slurry collected in the collecting box 38 is kept warm.

[0040] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A PP modified recycled special material mixing and extrusion equipment, comprising an extruder body (11), the extruder body (11) is fixedly arranged on the upper end of a mounting base (15), the feeding end of the extruder body (11) is connected to a mixing box (14), the discharge end of the extruder body (11) is installed with a connecting block (12), the discharge end of the connecting block (12) is installed with an extrusion die (13), one side of the connecting block (12) is provided with a sliding through hole, a switching plate (18) is slidably arranged in the sliding through hole, one side of the switching plate (18) is symmetrically provided with mounting holes, the mounting holes are each provided with a mounting slide seat (17), and a filter screen plate (16) is fixedly arranged in the middle of the mounting slide seat (17), characterized in that: A threaded hole is provided on one side of the switching plate (18), and a threaded rod (19) is provided in the threaded hole. The threaded rod (19) is rotatably arranged inside the protective outer box (21), and one end of the threaded rod (19) is fixedly connected to the output end of the servo motor (20). A trigger mechanism for controlling the servo motor (20) to automatically switch the switching plate (18) is provided at the bottom end of the protective outer box (21). Back-blowing heads (33) are provided inside the protective outer box (21) and at non-working positions of the two filter screens (16). The input ends of the two back-blowing heads (33) are both connected to the output end of the industrial hot air blower (35). A recovery mechanism for collecting impurities and liquid is provided inside the protective outer box (21) and at one end of the back-blowing head (33).

2. The PP modified recycled special material mixing and extrusion equipment according to claim 1 is characterized in that: The trigger mechanism comprises a pressure sensor (28), the pressure sensor (28) being fixedly arranged at the bottom end of the protective outer box (21), a trigger plate (26) being arranged on one side of the trigger end of the pressure sensor (28), first guide slide bars being slidably arranged on both sides of the trigger plate (26), the first guide slide bars being fixedly arranged at the bottom end of the protective outer box (21), a second return spring (27) being fixedly arranged between one side of the trigger plate (26) and one end of the first guide slide bar, a sliding groove being arranged at the bottom end of the connecting block (12) corresponding to the position of the trigger plate (26), a fixing column being fixedly arranged on one side of the trigger plate (26), a limiting ring groove being arranged at the inside of the switching plate (18) corresponding to the position of the mounting slide seat (17), the mounting slide seat (17) being slidably arranged on the limiting ring groove, and the mounting slide seat (17) being slidably arranged on the limiting ring groove. A plurality of spring grooves are provided in a circular array on one side of the mounting slide (17), and a first return spring (24) is installed in each of the spring grooves. The other end of the first return spring (24) is fixedly connected to one side of the limiting ring groove. A fixing rod (25) is provided on one side of the spring groove coaxially with the fixed column position. The pressure sensor (28) is electrically connected to the controller (41), and the controller (41) is fixedly provided on the upper end of the protective outer box (21), and the protective outer box (21) is fixedly provided on the upper end of the support seat (22), and the support seat (22) is fixedly provided on the upper end of the mounting base (15). A sliding hole is provided on one side of the switching plate (18), and a second guide slide rod is slidably provided in the sliding hole, and the second guide slide rod is fixedly provided inside the protective outer box (21).

3. The PP modified recycled special material mixing and extrusion equipment according to claim 2 is characterized in that: A guide groove (29) is provided inside the connection block (12) at a position corresponding to the position of the fixing rod (25), and both ends of the guide groove (29) are arranged obliquely.

4. The PP modified recycled special material mixing and extrusion equipment according to claim 3 is characterized in that: Sealing plates (23) are fixedly provided at positions corresponding to both ends of the sliding through holes on both sides of the connecting block (12), and the sealing plates (23) are closely arranged with the switching plate (18). One end of the sealing plate (23) is closely arranged with the back-blowing head (33). An expansion tube (30) is connected to the discharge end of the extruder body (11), and a sliding block (31) is slidably provided inside the expansion tube (30). The bottom end of the sliding block (31) is arranged in an arc shape, and a limiting slide bar is fixedly provided at the upper end of the sliding block (31). The limiting slide bar is slidably arranged in the through hole at the upper end of the expansion tube (30), and a third return spring (32) is provided between the upper end of the sliding block (31) and the upper end of the expansion tube (30).

5. The PP modified recycled special material mixing and extrusion equipment according to claim 4 is characterized in that: The recycling mechanism comprises a collecting head (34), the two collecting heads (34) are respectively coaxially arranged with the two back-blowing heads (33), the back-blowing heads (33) and the collecting heads (34) are symmetrically arranged, one end of the back-blowing head (33) and the collecting head (34) are respectively closely attached to the two sides of the switching plate (18), the collecting head (34) is closely attached to one end of the sealing plate (23), the output end of the collecting head (34) is connected to a discharge pipe, the other end of the discharge pipe is connected to the input end of the recycling box (36), and the recycling A separation grid (37) is provided inside the box (36), the separation grid (37) is fixed inside a fixed frame, the fixed frame is slidably provided inside the recovery box (36), a collection box (38) is provided below the separation grid (37), the collection box (38) is slidably provided inside the recovery box (36), a plurality of heat-conducting fins are provided at equal intervals on both sides of the collection box (38), a plurality of exhaust holes are provided at the bottom of the recovery box (36), and the industrial hot air blower (35) is fixedly provided on the upper end of the mounting base (15).

6. The PP modified recycled special material mixing and extrusion equipment according to claim 5 is characterized in that: A bearing plate is closely attached to the bottom end of the collection box (38), and the bottom ends of the bearing plate are respectively fixedly connected to the output ends of a plurality of spring telescopic rods (39). The plurality of spring telescopic rods (39) are fixedly arranged at the bottom end of the interior of the recycling box (36). A weighing sensor (40) is fixedly arranged at the bottom end of the interior of the recycling box (36), and the weighing sensor (40) is electrically connected to a controller (41).

7. The PP modified recycled special material mixing and extrusion equipment according to claim 6 is characterized in that: The back-blowing head (33) and the collecting head (34) are both tightly provided with sealing baffles (42) at one end, and the sealing baffles (42) on the same side are fixed on a mounting column, and rotating plates are rotatably provided at both ends of the mounting column, and the rotating plates are fixed at the bottom end of the inner part of the protective outer box (21), and a torsion spring (43) is provided between one side of the sealing baffle (42) and one side of the rotating plate.

8. The PP modified recycled special material mixing and extrusion equipment according to claim 1 is characterized in that: A fixing plate is fixedly provided at the upper end of the mixing box (14), a rotating sleeve shaft (46) is rotatably provided in a mounting hole at the upper end of the fixing plate, a mounting shaft (44) is rotatably provided in the middle of the rotating sleeve shaft (46), a spiral plate (45) is provided at one end of the mounting shaft (44) at a position corresponding to the discharge end of the mixing box (14), a mixing frame is symmetrically fixedly provided at one end of the mounting shaft (44), a plurality of first mixing plates are fixedly provided on the inner side of the mixing frame, a plurality of second mixing plates are fixedly provided on the outer side of the rotating sleeve shaft (46), the first mixing plates and the second mixing plates are alternately arranged, a first bevel gear is fixedly provided at one end of the rotating sleeve shaft (46), a second bevel gear is fixedly provided at one end of the mounting shaft (44), the first bevel gear and the second bevel gear are both meshed with a third bevel gear, the third bevel gear is fixedly provided at the output end of a drive motor (47), and the drive motor (47) is fixedly provided at the upper end of the fixing plate.

Images