Extruder for producing PE (Polyethylene) integrally-formed spiral drain pipe

Abstract

The invention relates to the technical field of plastic extruders, and discloses an extruder for producing a PE (polyethylene) integrally-formed spiral drain pipe, which comprises an extrusion cylinder, a conveying cylinder, a mixing cylinder, a mold, a conveying device, an intermittent feeding device, a drying device, a controller and the like, a spiral roller is fixedly connected with a rotating shaft of a second motor, and the conveying roller is fixedly connected with a rotating shaft of a third motor; a cam is fixedly connected with a rotating shaft of a third motor, the top end of a convex rod is fixedly connected with the bottom of a feeding plate, an air spraying pipe is fixedly connected with the inner wall of the top of the conveying barrel, the upper ends of a plurality of spraying heads communicate with the air spraying pipe, and the lower ends of the spraying heads communicate with the interior of the conveying barrel. High-temperature gas heated by the heater in the extrusion cylinder can be extracted and then sprayed to raw materials conveyed in the conveying cylinder, so that the raw materials are kept dry before being conveyed to the extrusion cylinder, and the influence of insufficient drying of the raw materials on the quality of subsequent products is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of plastic extruders, in particular to an extruder for producing PE integrally formed spiral drainage pipes. Background Art

[0002] With the acceleration of urbanization and the continuous improvement of infrastructure construction, drainage pipes, as an important part of urban infrastructure, are increasingly in demand. Among the many drainage pipe materials, polyethylene (PE) has gradually become the preferred material for drainage pipes due to its excellent corrosion resistance, aging resistance, flexibility and good hydraulic performance. In particular, PE one-piece spiral drainage pipes have been widely used in municipal drainage, farmland irrigation and other fields because of their unique spiral structure, which enhances the ring stiffness and compression resistance of the pipe, while improving the self-cleaning ability and service life of the pipe.

[0003] In the production process of existing PE spiral drainage pipes, the PE raw materials may absorb a certain amount of water during storage, transportation and recycling, and some additives such as water-absorbing pigments will also increase the humidity of the raw materials, resulting in the raw materials failing to reach an ideal drying state before entering the extruder. Insufficient drying will not only affect the fluidity of the PE melt, but may also form bubbles inside the pipe, reduce the strength and sealing of the pipe, and affect the quality of the product. Therefore, an extruder for the production of PE one-piece spiral drainage pipes is proposed. Summary of the invention

[0004] The present invention aims to solve the technical problem of how to make PE raw materials dry before melting, prevent bubbles from being generated during the extrusion process of the PE raw materials, and affect the appearance and quality of the product. An extruder for producing PE one-piece spiral drainage pipes is provided.

[0005] The technical solution adopted by the present invention to solve its technical problem is: The extruder for producing PE one-piece spiral drainage pipes includes four support columns, an extrusion barrel, a conveying barrel, a mixing barrel, a mold, a feed port, a first motor, a plurality of stirring blades, a second motor, a spiral roller, a heater, a conveying device, an intermittent feeding device, a drying device, and a controller.

[0006] The extrusion cylinder is transversely arranged above the two support columns, and the bottom of the extrusion cylinder is fixedly connected to the tops of the two support columns.

[0007] The conveying cylinder is transversely arranged above the extruding cylinder, the right part of the conveying cylinder is communicated with the left part of the extruding cylinder, and the bottom of the conveying cylinder is fixedly connected with the tops of the other two supporting columns.

[0008] The mixing cylinder is vertically arranged above the conveying cylinder, and the bottom of the mixing cylinder is communicated with the left part of the conveying cylinder.

[0009] The mold is arranged on the right part of the extrusion cylinder, and the mold is communicated with the extrusion cylinder and the outside world.

[0010] The feed inlet is arranged at the upper part of the mixing cylinder, the lower end of the feed inlet is communicated with the mixing cylinder, and the upper end of the feed inlet is communicated with the outside.

[0011] The first motor is arranged inside the mixing cylinder, and the top of the first motor is fixedly connected to the top inner wall of the mixing cylinder.

[0012] A plurality of stirring blades are transversely arranged inside the mixing barrel, and the side portions of the plurality of stirring blades are respectively fixedly connected to the rotating shaft of the first motor.

[0013] The second motor is arranged on the side of the extrusion cylinder, the rotating shaft of the second motor passes through the extrusion cylinder horizontally and extends to the inside of the extrusion cylinder, and the second motor is fixedly connected to the extrusion cylinder.

[0014] The spiral roller is arranged inside the extruder and sleeved on the outside of the second motor. The axis of the spiral roller coincides with the axis of the rotating shaft of the second motor. The spiral roller is fixedly connected to the rotating shaft of the second motor.

[0015] The heater is arranged in the inner wall of the extrusion cylinder, and the heater is fixedly connected to the extrusion cylinder.

[0016] The conveying device is arranged inside the conveying cylinder, and the conveying device is fixedly connected to the conveying cylinder.

[0017] The intermittent feeding device is arranged inside the mixing barrel and above the conveying device. The intermittent feeding device is connected to the rotating shaft of the first motor and connected to the conveying device.

[0018] The drying device is arranged at the lower part of the conveying cylinder and below the intermittent feeding device. The drying device is connected with the conveying cylinder and the conveying device.

[0019] The controller is arranged above the conveying cylinder, the controller is fixedly connected to the conveying cylinder, and the controller is electrically connected to the first motor, the second motor, the heater, and the conveying device respectively.

[0020] When using this device, the staff pours the PE resin and additives into the mixing barrel from the feed port, and then the staff starts the first motor and the heater through the controller. The heater preheats the extrusion barrel, and the shaft of the first motor drives a number of stirring blades to rotate, and the stirring blades stir and mix the PE resin and the additives. Then, through the intermittent feeding device, the raw material enters the conveying device, and is conveyed to the extrusion barrel through the conveying device. In the process of conveying the raw material by the conveying device, the raw material is dried by the drying device to keep the raw material dry. When the raw material falls into the extrusion barrel, the staff starts the second motor through the controller, and the shaft of the second motor drives the spiral roller to rotate. The spiral roller pushes the molten raw material to the mold. Finally, the molten raw material is extruded through the mold into a spiral drain pipe of a preliminary shape.

[0021] Furthermore, the conveying device includes a vertical plate, a third motor, a conveying roller, a first bevel gear, and a cam.

[0022] The vertical plate is arranged inside the conveying cylinder and is located on the side of the connection point between the conveying cylinder and the mixing cylinder. The vertical plate is fixedly connected to the conveying cylinder.

[0023] The third motor is arranged on the side of the conveying cylinder away from the mold. The rotating shaft of the third motor horizontally passes through the conveying cylinder and the vertical plate. The rotating shaft axis of the third motor is parallel to the rotating shaft axis of the second motor. The third motor is fixedly connected to the conveying cylinder, and the rotating shaft of the third motor is rotatably connected to the vertical plate.

[0024] The conveying roller is arranged inside the conveying cylinder and sleeved on the outer side of the rotating shaft of the third motor. The axis of the conveying roller coincides with the axis of the rotating shaft of the third motor. The conveying roller is fixedly connected to the rotating shaft of the third motor.

[0025] The first bevel gear is vertically arranged inside the conveying cylinder, on the side of the vertical plate away from the mold, and is sleeved on the outside of the rotating shaft of the third motor. The axis of the first bevel gear coincides with the axis of the rotating shaft of the third motor, and the first bevel gear is fixedly connected to the rotating shaft of the third motor.

[0026] The cam is arranged inside the conveying cylinder and sleeved on the outer side of the rotating shaft of the third motor. The cam is fixedly connected to the rotating shaft of the third motor.

[0027] When the raw materials need to be conveyed, the staff starts the third motor through the controller, and the rotating shaft of the third motor drives the first bevel gear to rotate, drives the cam to rotate, drives the conveying roller to rotate, and the conveying roller conveys the raw materials to the inside of the extruder.

[0028] Furthermore, the intermittent feeding device includes a rotating sleeve, a telescopic rod, a spring, a feeding plate, and a protruding rod.

[0029] The rotating sleeve is vertically arranged inside the mixing barrel, sleeved outside the rotating shaft of the first motor, and below the plurality of stirring blades. The axis of the rotating sleeve coincides with the axis of the rotating shaft of the first motor, and the rotating sleeve is rotationally connected to the rotating shaft of the first motor.

[0030] The telescopic rod is vertically arranged inside the mixing barrel and below the rotating sleeve, and the top end of the telescopic rod is fixedly connected to the bottom end of the rotating sleeve.

[0031] The feeding plate is transversely arranged inside the mixing barrel and below the telescopic rod, and the top of the feeding plate is fixedly connected to the bottom end of the telescopic rod.

[0032] The spring is vertically arranged inside the mixing barrel and sleeved on the outside of the telescopic rod. The upper end of the spring is fixedly connected to the bottom of the rotating sleeve, and the lower end is fixedly connected to the top of the feeding plate.

[0033] The protruding rod is vertically arranged at the lower part of the mixing barrel and directly below the feeding plate, and the top end of the protruding rod is fixedly connected to the bottom end of the feeding plate.

[0034] When the raw materials need to be put into the conveying cylinder, the cam drives the convex rod to move upward, and the convex rod drives the feeding plate to move upward. The feeding plate moves upward so that the raw materials fall into the conveying cylinder, and the feeding plate moves upward to squeeze the spring and the telescopic rod. When the cam moves away from the convex rod, the spring and the telescopic rod are reset, pushing the feeding plate to reset, and the feeding plate blocks the raw materials.

[0035] Furthermore, the drying device includes a cylinder body, a piston, a transmission mechanism, a cross bar, an air jet pipe, a plurality of nozzles, an air inlet pipe, an air outlet pipe, two one-way valves, a condenser, and an air outlet pipe.

[0036] The transmission mechanism is arranged at the lower part of the transmission cylinder, connected with the transmission cylinder, and connected with the first bevel gear.

[0037] The cylinder body is arranged below the conveying cylinder and at the side of the conveying mechanism close to the mold, and the top of the cylinder body is fixedly connected to the bottom of the conveying cylinder.

[0038] The piston is vertically arranged inside the cylinder body, and the piston is slidably connected with the cylinder body along the inner wall of the cylinder body.

[0039] The cross bar is transversely arranged on the side of the cylinder body away from the mold, one end of the cross bar is fixedly connected to the piston, and the other end passes through the side of the cylinder body and is connected to the transmission mechanism.

[0040] The air jet pipe is transversely arranged inside the conveying cylinder and above the conveying roller, and the air jet pipe is fixedly connected to the inner wall of the top of the conveying cylinder.

[0041] A plurality of nozzles are vertically arranged inside the conveying cylinder and are located at the lower part of the air injection pipe. The upper ends of the plurality of nozzles are respectively communicated with the air injection pipe, and the lower ends are respectively communicated with the inside of the conveying cylinder.

[0042] The air inlet pipe is arranged on the side of the cylinder body close to the mold, one end of the air inlet pipe is connected with the interior of the extrusion cylinder, and the other end of the air inlet pipe penetrates the cylinder body and is connected with the interior of the cylinder body.

[0043] The condenser is arranged above the conveying cylinder, and the bottom of the condenser is fixedly connected to the top of the conveying cylinder.

[0044] The exhaust pipe is arranged at the upper part of the cylinder body, one end of the exhaust pipe penetrates the cylinder body and is communicated with the inside of the cylinder body, and the other end of the exhaust pipe is communicated with the condenser.

[0045] The air outlet pipe is arranged above the conveying cylinder and at the side of the condenser close to the mold. One end of the air outlet pipe is communicated with the condenser, and the other end passes through the conveying cylinder and is communicated with the air injection pipe.

[0046] The two one-way valves are respectively arranged inside the air intake pipe and the exhaust pipe, and the two one-way valves are respectively fixedly connected to the air intake pipe and the exhaust pipe.

[0047] When the raw materials need to be dried, the transmission mechanism drives the crossbar to move left, and the crossbar drives the piston to move left. The piston moves left, so that the high-temperature air in the extruder passes through the air inlet pipe and the one-way valve in turn into the cylinder. When the transmission mechanism drives the crossbar to move right, the crossbar drives the piston to move right, and the piston pushes the high-temperature air in the cylinder through the one-way valve, the exhaust pipe, the condenser, and the air outlet pipe in turn into the jet pipe, and then the condensed and dried high-temperature air is sprayed to the raw materials conveyed by the conveying roller through several nozzles, so that the raw materials conveyed by the conveying roller become dry.

[0048] Furthermore, the transmission mechanism includes a first rotating shaft, a second bevel gear, a rotating disk, an eccentric column, and a connecting rod.

[0049] The first rotating shaft is vertically arranged at the lower part of the conveying cylinder and at the side of the vertical plate away from the mold. The first rotating shaft passes through the conveying cylinder. The axis of the first rotating shaft is vertical. The first rotating shaft is rotatably connected to the conveying cylinder.

[0050] The second bevel gear is transversely arranged inside the conveying cylinder and sleeved on the outside of the first rotating shaft. The axis of the second bevel gear coincides with the axis of the first rotating shaft. The second bevel gear is fixedly connected to the first rotating shaft and meshes with the first bevel gear.

[0051] The turntable is transversely arranged below the conveying cylinder and sleeved on the outer side of the first rotating shaft. The axis of the turntable coincides with the axis of the first rotating shaft, and the turntable is fixedly connected to the first rotating shaft.

[0052] The eccentric column is vertically arranged below the turntable, and the top of the eccentric column is fixedly connected to the bottom of the turntable.

[0053] The connecting rod is horizontally arranged below the rotating disk, one end of the connecting rod is sleeved on the outer side of the eccentric column and is rotationally connected with the eccentric column, and the other end is hinged with the cross rod, and the axis of the hinge is vertical.

[0054] When the crossbar needs to be moved to the left, the second bevel gear drives the first rotating shaft to rotate, the first rotating shaft drives the rotating disk to rotate, the rotating disk drives the eccentric column to rotate, the eccentric column drives the connecting rod to move left, and the connecting rod drives the crossbar to move left.

[0055] When the crossbar needs to be moved to the right, the eccentric column drives the connecting rod to move to the right, and the connecting rod drives the crossbar to move to the right.

[0056] Furthermore, a plurality of stirring blades are evenly distributed on the outer side of the rotating shaft of the first motor.

[0057] Make the PE material and additives mix evenly.

[0058] Furthermore, the extrusion barrel is made of alloy steel.

[0059] Ensure that the extruder can work stably in high temperature, high pressure and corrosive environment. Furthermore, the vertical plate and the conveying cylinder are fixed by welding.

[0060] This enables the conveying roller to stably convey the raw materials.

[0061] Furthermore, a plurality of nozzles are evenly distributed at the lower part of the air injection pipe.

[0062] The high-temperature gas ejected from the nozzle can be evenly sprayed onto the raw materials, making the raw materials dry.

[0063] Furthermore, the cylinder body and the conveying cylinder are fixed by welding.

[0064] This allows the high-temperature gas in the extrusion barrel to stably pass through the cylinder body into the injection pipe.

[0065] Beneficial effects of the present invention: 1. The present invention provides a cylinder body, an air inlet pipe, an exhaust pipe, a piston and other structures, so that the high-temperature gas heated by the heater in the extrusion barrel can be extracted and then sprayed to the raw materials conveyed in the conveying barrel, so that the raw materials are kept dry before being conveyed to the extrusion barrel, thereby preventing insufficient drying of the raw materials from affecting the quality of subsequent products.

[0066] 2. The present invention provides structures such as a feed plate, a convex rod, a cam, and a telescopic rod, so that the raw material can intermittently fall onto a conveying roller and then enter the extrusion barrel, so that the amount of molten resin raw material in the extrusion barrel can be controlled, which is beneficial to maintaining a stable melting temperature and melting time, thereby improving the melting effect.

[0067] 3. The present invention can also discharge the steam generated by the molten raw material in the extrusion barrel by arranging structures such as the air inlet pipe, the exhaust pipe, the condenser, the air outlet pipe, and the one-way valve. After the high-temperature steam is condensed and dried by the condenser, it can also be used to dry the raw material in the conveying barrel, thereby effectively utilizing the evaporated high-temperature steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 This is a schematic diagram of the front cross-sectional structure of the extruder used in the production of the PE one-piece spiral drainage pipe; Figure 2 This is a schematic diagram of the transmission mechanism of the extruder used in the production of the PE one-piece spiral drainage pipe when viewed from above; Figure 3 It is a schematic diagram of the side view structure of the cam rod of the extruder used for producing the PE one-piece spiral drainage pipe.

[0069] Explanation of the reference numerals in the accompanying drawings: 1. support column; 2. extrusion cylinder; 3. conveying cylinder; 4. mixing cylinder; 5. mold; 6. feed port; 7. first motor; 8. stirring blade; 9. second motor; 10. spiral roller; 11. heater; 12. vertical plate; 13. third motor; 14. conveying roller; 15. first bevel gear; 16. cam; 17. rotating sleeve; 18. telescopic rod; 19. spring; 20. feeding plate; 21. convex rod; 22. cylinder body; 23. piston; 24. first rotating shaft; 25. second bevel gear; 26. turntable; 27. eccentric column; 28. connecting rod; 29. ​​cross bar; 30. jet pipe; 31. nozzle; 32. air inlet pipe; 33. exhaust pipe; 34. one-way valve; 35. controller; 36. condenser; 37. air outlet pipe. DETAILED DESCRIPTION

[0070] The concept and technical effects of the present invention will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features and effects of the present invention.

[0071] like Figure 1-3 As shown, the technical solution adopted by the present invention to solve its technical problem is: The extruder for producing PE one-piece spiral drainage pipes includes four support columns 1, an extrusion barrel 2, a conveying barrel 3, a mixing barrel 4, a mold 5, a feed port 6, a first motor 7, a plurality of stirring blades 8, a second motor 9, a spiral roller 10, a heater 11, a conveying device, an intermittent feeding device, a drying device, and a controller 35.

[0072] The extrusion cylinder 2 is laterally arranged above the two support columns 1 , and the bottom of the extrusion cylinder 2 is fixedly connected to the tops of the two support columns 1 .

[0073] The conveying cylinder 3 is transversely arranged above the extrusion cylinder 2 , the right part of the conveying cylinder 3 is connected to the left part of the extrusion cylinder 2 , and the bottom of the conveying cylinder 3 is fixedly connected to the tops of the other two support columns 1 .

[0074] The mixing drum 4 is vertically arranged above the conveying drum 3 , and the bottom of the mixing drum 4 is communicated with the left part of the conveying drum 3 .

[0075] The die 5 is disposed on the right side of the extrusion cylinder 2 , and the die 5 is communicated with the extrusion cylinder 2 and with the outside world.

[0076] The feed port 6 is arranged at the upper part of the mixing cylinder 4, the lower end of the feed port 6 is connected with the mixing cylinder 4, and the upper end of the feed port 6 is connected with the outside.

[0077] The first motor 7 is disposed inside the mixing cylinder 4 , and the top of the first motor 7 is fixedly connected to the top inner wall of the mixing cylinder 4 .

[0078] A plurality of stirring blades 8 are transversely arranged inside the mixing barrel 4 , and the side portions of the plurality of stirring blades 8 are fixedly connected to the rotating shaft of the first motor 7 .

[0079] The second motor 9 is disposed on the side of the extrusion barrel 2 . The rotation shaft of the second motor 9 transversely penetrates the extrusion barrel 2 and extends to the interior of the extrusion barrel 2 . The second motor 9 is fixedly connected to the extrusion barrel 2 .

[0080] The spiral roller 10 is arranged inside the extruder 2 and sleeved on the outside of the second motor 9. The axis of the spiral roller 10 coincides with the axis of the rotating shaft of the second motor 9. The spiral roller 10 is fixedly connected to the rotating shaft of the second motor 9.

[0081] The heater 11 is disposed in the inner wall of the extrusion cylinder 2 , and the heater 11 is fixedly connected to the extrusion cylinder 2 .

[0082] The conveying device is arranged inside the conveying cylinder 3 , and the conveying device is fixedly connected to the conveying cylinder 3 .

[0083] The intermittent feeding device is arranged inside the mixing drum 4 and above the conveying device. The intermittent feeding device is connected to the rotating shaft of the first motor 7 and connected to the conveying device.

[0084] The drying device is arranged at the lower part of the conveying cylinder 3 and below the intermittent feeding device. The drying device is connected to the conveying cylinder 3 and connected to the conveying device.

[0085] The controller 35 is disposed above the conveying cylinder 3 , and the controller 35 is fixedly connected to the conveying cylinder 3 , and the controller 35 is electrically connected to the first motor 7 , the second motor 9 , the heater 11 , and the conveying device, respectively.

[0086] When using the device, the staff pours the PE resin and additives into the mixing barrel 4 from the feed port 6, and then the staff starts the first motor 7 and the heater 11 through the controller 35. The heater 11 preheats the extrusion barrel 2, and the rotating shaft of the first motor 7 drives the plurality of stirring blades 8 to rotate, and the plurality of stirring blades 8 stir and mix the PE resin and the additives. Then, the raw material enters the conveying device through the intermittent feeding device, and is conveyed to the extrusion barrel 2 through the conveying device. In the process of conveying the raw material by the conveying device, the raw material is dried by the drying device to keep the raw material dry. When the raw material falls into the extrusion barrel 2, the staff starts the second motor 9 through the controller 35, and the rotating shaft of the second motor 9 drives the spiral roller 10 to rotate. The spiral roller 10 pushes the molten raw material to the mold 5. Finally, the molten raw material is extruded through the mold 5 into a spiral drain pipe of a preliminary shape.

[0087] The conveying device includes a vertical plate 12 , a third motor 13 , a conveying roller 14 , a first bevel gear 15 , and a cam 16 .

[0088] The vertical plate 12 is disposed inside the conveying cylinder 3 , and is located on the side of the connection point between the conveying cylinder 3 and the mixing cylinder 4 . The vertical plate 12 is fixedly connected to the conveying cylinder 3 .

[0089] The third motor 13 is arranged on the side of the conveying cylinder 3 away from the mold 5. The rotating shaft of the third motor 13 transversely passes through the conveying cylinder 3 and the vertical plate 12. The rotating shaft axis of the third motor 13 is parallel to the rotating shaft axis of the second motor 9. The third motor 13 is fixedly connected to the conveying cylinder 3, and the rotating shaft of the third motor 13 is rotatably connected to the vertical plate 12.

[0090] The conveying roller 14 is arranged inside the conveying cylinder 3 and sleeved on the outer side of the rotating shaft of the third motor 13 . The axis of the conveying roller 14 coincides with the axis of the rotating shaft of the third motor 13 . The conveying roller 14 is fixedly connected to the rotating shaft of the third motor 13 .

[0091] The first bevel gear 15 is vertically arranged inside the conveying cylinder 3, on the side of the vertical plate 12 away from the mold 5, and is sleeved on the outside of the rotating shaft of the third motor 13. The axis of the first bevel gear 15 coincides with the axis of the rotating shaft of the third motor 13, and the first bevel gear 15 is fixedly connected to the rotating shaft of the third motor 13.

[0092] The cam 16 is disposed inside the conveying cylinder 3 and sleeved on the outer side of the rotating shaft of the third motor 13 . The cam 16 is fixedly connected to the rotating shaft of the third motor 13 .

[0093] When the raw materials need to be conveyed, the staff starts the third motor 13 through the controller 35 , and the rotating shaft of the third motor 13 drives the first bevel gear 15 to rotate, drives the cam 16 to rotate, and drives the conveying roller 14 to rotate, and the conveying roller 14 conveys the raw materials to the inside of the extrusion barrel 2 .

[0094] The intermittent feeding device comprises a rotating sleeve 17 , a telescopic rod 18 , a spring 19 , a feeding plate 20 , and a protruding rod 21 .

[0095] The rotating sleeve 17 is vertically arranged inside the mixing barrel 4, sleeved on the outside of the rotating shaft of the first motor 7, and located below the plurality of stirring blades 8. The axis of the rotating sleeve 17 coincides with the axis of the rotating shaft of the first motor 7, and the rotating sleeve 17 is rotationally connected to the rotating shaft of the first motor 7.

[0096] The telescopic rod 18 is vertically arranged inside the mixing barrel 4 and below the rotating sleeve 17 . The top end of the telescopic rod 18 is fixedly connected to the bottom end of the rotating sleeve 17 .

[0097] The feeding plate 20 is transversely arranged inside the mixing drum 4 and below the telescopic rod 18 , and the top of the feeding plate 20 is fixedly connected to the bottom end of the telescopic rod 18 .

[0098] The spring 19 is vertically arranged inside the mixing barrel 4 and sleeved on the outside of the telescopic rod 18 . The upper end of the spring 19 is fixedly connected to the bottom of the rotating sleeve 17 , and the lower end is fixedly connected to the top of the feeding plate 20 .

[0099] The protruding rod 21 is vertically arranged at the lower part of the mixing barrel 4 and directly below the feeding plate 20 . The top end of the protruding rod 21 is fixedly connected to the bottom of the feeding plate 20 .

[0100] When the raw material needs to be put into the conveying cylinder 3, the cam 16 drives the protruding rod 21 to move upward, and the protruding rod 21 drives the feeding plate 20 to move upward. The feeding plate 20 moves upward so that the raw material falls into the conveying cylinder 3, and the feeding plate 20 moves upward to squeeze the spring 19 and the telescopic rod 18. When the cam 16 moves away from the protruding rod 21, the spring 19 and the telescopic rod 18 are reset, pushing the feeding plate 20 to reset, and the feeding plate 20 blocks the raw material.

[0101] The drying device includes a cylinder body 22 , a piston 23 , a transmission mechanism, a cross bar 29 , an air jet pipe 30 , a plurality of nozzles 31 , an air inlet pipe 32 , an air outlet pipe 33 , two one-way valves 34 , a condenser 36 , and an air outlet pipe 37 .

[0102] The transmission mechanism is disposed at the lower part of the conveying cylinder 3 , connected to the conveying cylinder 3 , and connected to the first bevel gear 15 .

[0103] The cylinder body 22 is disposed below the conveying cylinder 3 and on the side of the conveying mechanism close to the mold 5 . The top of the cylinder body 22 is fixedly connected to the bottom of the conveying cylinder 3 .

[0104] The piston 23 is vertically disposed inside the cylinder body 22 , and the piston 23 is slidably connected to the cylinder body 22 along the inner wall of the cylinder body 22 .

[0105] The cross bar 29 is transversely arranged on the side of the cylinder body 22 away from the mold 5. One end of the cross bar 29 is fixedly connected to the piston 23, and the other end passes through the side of the cylinder body 22 and is connected to the transmission mechanism.

[0106] The air injection pipe 30 is transversely arranged inside the conveying cylinder 3 and above the conveying roller 14 . The air injection pipe 30 is fixedly connected to the inner wall of the top of the conveying cylinder 3 .

[0107] A plurality of nozzles 31 are vertically arranged inside the conveying cylinder 3 and are located at the lower part of the air injection pipe 30 . The upper ends of the plurality of nozzles 31 are respectively communicated with the air injection pipe 30 , and the lower ends are respectively communicated with the inside of the conveying cylinder 3 .

[0108] The air inlet pipe 32 is arranged on the side of the cylinder body 22 close to the mold 5 , one end of the air inlet pipe 32 is connected to the interior of the extrusion barrel 2 , and the other end passes through the cylinder body 22 and is connected to the interior of the cylinder body 22 .

[0109] The condenser 36 is disposed above the conveying cylinder 3 , and the bottom of the condenser 36 is fixedly connected to the top of the conveying cylinder 3 .

[0110] The exhaust pipe 33 is disposed at the upper portion of the cylinder body 22 . One end of the exhaust pipe 33 passes through the cylinder body 22 and communicates with the interior of the cylinder body 22 , and the other end of the exhaust pipe 33 communicates with the condenser 36 .

[0111] The air outlet pipe 37 is arranged above the conveying cylinder 3 and on the side of the condenser 36 close to the mold 5 . One end of the air outlet pipe 37 is connected to the condenser 36 , and the other end passes through the conveying cylinder 3 and is connected to the injection pipe 30 .

[0112] The two one-way valves 34 are respectively disposed inside the intake pipe 32 and the exhaust pipe 33 , and the two one-way valves 34 are respectively fixedly connected to the intake pipe 32 and the exhaust pipe 33 .

[0113] When the raw materials need to be dried, the transmission mechanism drives the crossbar 29 to move left, and the crossbar 29 drives the piston 23 to move left. The piston 23 moves left so that the high-temperature air in the extruder barrel 2 passes through the air inlet pipe 32 and the one-way valve 34 in sequence to enter the cylinder 22. When the transmission mechanism drives the crossbar 29 to move right, the crossbar 29 drives the piston 23 to move right, and the piston 23 pushes the high-temperature air in the cylinder 22 to pass through the one-way valve 34, the exhaust pipe 33, the condenser 36, and the air outlet pipe 37 in sequence to enter the injection pipe 30, and then the condensed and dried high-temperature air is sprayed to the raw materials conveyed by the conveying roller 14 through a plurality of nozzles 31, so that the raw materials conveyed by the conveying roller 14 become dry.

[0114] The transmission mechanism includes a first rotating shaft 24 , a second bevel gear 25 , a rotating disk 26 , an eccentric column 27 , and a connecting rod 28 .

[0115] The first rotating shaft 24 is vertically arranged at the lower part of the conveying cylinder 3 and at the side of the vertical plate 12 away from the mold 5 . The first rotating shaft 24 passes through the conveying cylinder 3 . The axis of the first rotating shaft 24 is vertical. The first rotating shaft 24 is rotatably connected to the conveying cylinder 3 .

[0116] The second bevel gear 25 is transversely arranged inside the conveying cylinder 3 and sleeved on the outside of the first rotating shaft 24. The axis of the second bevel gear 25 coincides with the axis of the first rotating shaft 24. The second bevel gear 25 is fixedly connected to the first rotating shaft 24 and the second bevel gear 25 is meshed with the first bevel gear 15.

[0117] The turntable 26 is transversely disposed below the conveying cylinder 3 and sleeved on the outer side of the first rotating shaft 24 . The axis of the turntable 26 coincides with the axis of the first rotating shaft 24 , and the turntable 26 is fixedly connected to the first rotating shaft 24 .

[0118] The eccentric column 27 is vertically arranged below the rotating disk 26 , and the top of the eccentric column 27 is fixedly connected to the bottom of the rotating disk 26 .

[0119] The connecting rod 28 is transversely arranged below the rotating disk 26. One end of the connecting rod 28 is sleeved on the outside of the eccentric column 27 and is rotatably connected to the eccentric column 27. The other end of the connecting rod 28 is hinged to the cross bar 29, and the axis of the hinge is vertical.

[0120] When the crossbar 29 needs to be moved leftward, the second bevel gear 25 drives the first rotating shaft 24 to rotate, the first rotating shaft 24 drives the rotating disk 26 to rotate, the rotating disk 26 drives the eccentric column 27 to rotate, the eccentric column 27 drives the connecting rod 28 to move leftward, and the connecting rod 28 drives the crossbar 29 to move leftward.

[0121] When the cross bar 29 needs to be moved rightward, the eccentric column 27 drives the connecting rod 28 to move rightward, and the connecting rod 28 drives the cross bar 29 to move rightward.

[0122] A plurality of stirring blades 8 are evenly distributed on the outer side of the rotating shaft of the first motor 7 .

[0123] Make the PE material and additives mix evenly.

[0124] The material of the extrusion cylinder 2 is alloy steel.

[0125] Ensure that the extruder 2 can work stably under high temperature, high pressure and corrosive environment. The vertical plate 12 and the conveying cylinder 3 are fixed by welding.

[0126] This enables the conveying roller 14 to stably convey the raw material.

[0127] A plurality of nozzles 31 are evenly distributed at the lower portion of the air injection pipe 30 .

[0128] The high temperature gas sprayed from the nozzle 31 can be sprayed evenly toward the raw material, so that the raw material is dried.

[0129] The cylinder body 22 and the conveying cylinder 3 are fixed by welding.

[0130] This allows the high-temperature gas in the extrusion barrel 2 to stably pass through the cylinder body 22 and enter the injection pipe 30 .

[0131] Working principle: When using this device, the staff pours PE resin and additives into the mixing barrel 4 from the feed port 6, and then the staff starts the first motor 7 and the heater 11 through the controller 35. The heater 11 preheats the extrusion barrel 2. The rotating shaft of the first motor 7 drives the plurality of stirring blades 8 to rotate, and the plurality of stirring blades 8 stir and mix the PE resin and the additives.

[0132] After the raw materials are mixed for a period of time, the staff starts the third motor 13 through the controller 35. The rotating shaft of the third motor 13 drives the first bevel gear 15 to rotate, drives the conveying roller 14 to rotate, drives the cam 16 to rotate, and the cam 16 drives the protruding rod 21 to move upward. The protruding rod 21 drives the feeding plate 20 to move upward. The feeding plate 20 moves upward so that the raw materials fall into the conveying cylinder 3, and the feeding plate 20 moves upward to squeeze the spring 19 and the telescopic rod 18. When the cam 16 moves away from the protruding rod 21, the spring 19 and the telescopic rod 18 are reset, pushing the feeding plate 20 to reset, and the feeding plate 20 blocks the raw materials.

[0133] When the shaft of the third motor 13 drives the conveying roller 14 to rotate, the conveying roller 14 conveys the raw material to the interior of the extrusion barrel 2, and the raw material melts in the extrusion barrel 2. Then the staff starts the second motor 9 through the controller 35, and the shaft of the second motor 9 drives the spiral roller 10 to rotate. The spiral roller 10 pushes the molten raw material toward the mold 5. Finally, the molten raw material is extruded through the mold 5 into a spiral drainage pipe of a preliminary shape.

[0134] When the rotating shaft of the third motor 13 drives the first bevel gear 15 to rotate, the first bevel gear 15 drives the second bevel gear 25 to rotate, the second bevel gear 25 drives the first rotating shaft 24 to rotate, the first rotating shaft 24 drives the turntable 26 to rotate, the turntable 26 drives the eccentric column 27 to rotate, the eccentric column 27 drives the connecting rod 28 to move left, the connecting rod 28 drives the cross bar 29 to move left, the cross bar 29 drives the piston 23 to move left, the piston 23 moves left so that the high-temperature air in the extrusion barrel 2 enters the cylinder body 22 through the air intake pipe 32 and the one-way valve 34 in sequence.

[0135] When the eccentric column 27 drives the connecting rod 28 to move right, the connecting rod 28 drives the cross bar 29 to move right, and the cross bar 29 drives the piston 23 to move right. The piston 23 pushes the high-temperature air inside the cylinder 22 to enter the injection pipe 30 through the one-way valve 34, the exhaust pipe 33, the condenser 36, and the outlet pipe 37 in sequence. Then, the condensed and dried high-temperature air is sprayed toward the raw materials conveyed by the conveying roller 14 through a plurality of nozzles 31, so that the raw materials conveyed by the conveying roller 14 become dry.

[0136] The above embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work shall all fall within the scope of protection of the present invention.

Claims

1. Extruder for producing PE one-piece spiral drainage pipe, characterized by: It comprises four support columns (1), an extrusion cylinder (2), a conveying cylinder (3), a mixing cylinder (4), a mold (5), a feed port (6), a first motor (7), a plurality of stirring blades (8), a second motor (9), a spiral roller (10), a heater (11), a conveying device, an intermittent feeding device, a drying device, and a controller (35); The extrusion cylinder (2) is disposed transversely above the two support columns (1), and the bottom of the extrusion cylinder (2) is fixedly connected to the tops of the two support columns (1); The conveying cylinder (3) is arranged transversely above the extrusion cylinder (2), the right part of the conveying cylinder (3) is connected to the left part of the extrusion cylinder (2), and the bottom of the conveying cylinder (3) is fixedly connected to the tops of the other two support columns (1); The mixing cylinder (4) is vertically arranged above the conveying cylinder (3), and the bottom of the mixing cylinder (4) is connected to the left part of the conveying cylinder (3); The mold (5) is arranged on the right side of the extrusion cylinder (2), and the mold (5) is connected to the extrusion cylinder (2) and to the outside world; The feed port (6) is arranged at the upper part of the mixing cylinder (4), the lower end of the feed port (6) is connected to the mixing cylinder (4), and the upper end of the feed port (6) is connected to the outside; The first motor (7) is arranged inside the mixing cylinder (4), and the top of the first motor (7) is fixedly connected to the top inner wall of the mixing cylinder (4); A plurality of stirring blades (8) are transversely arranged inside the mixing barrel (4), and the side portions of the plurality of stirring blades (8) are respectively fixedly connected to the rotating shaft of the first motor (7); The second motor (9) is arranged on the side of the extrusion cylinder (2), the rotating shaft of the second motor (9) passes through the extrusion cylinder (2) transversely and extends into the interior of the extrusion cylinder (2), and the second motor (9) is fixedly connected to the extrusion cylinder (2); The spiral roller (10) is arranged inside the extruder cylinder (2) and sleeved on the outside of the second motor (9). The axis of the spiral roller (10) coincides with the axis of the rotating shaft of the second motor (9). The spiral roller (10) is fixedly connected to the rotating shaft of the second motor (9). The heater (11) is arranged in the inner wall of the extrusion tube (2), and the heater (11) is fixedly connected to the extrusion tube (2); The conveying device is arranged inside the conveying cylinder (3), and the conveying device is fixedly connected to the conveying cylinder (3); The intermittent feeding device is arranged inside the mixing drum (4) and above the conveying device. The intermittent feeding device is connected to the rotating shaft of the first motor (7) and connected to the conveying device. The drying device is arranged at the lower part of the conveying cylinder (3) and below the intermittent feeding device. The drying device is connected to the conveying cylinder (3) and connected to the conveying device. The controller (35) is arranged above the conveying cylinder (3), the controller (35) is fixedly connected to the conveying cylinder (3), and the controller (35) is electrically connected to the first motor (7), the second motor (9), the heater (11), and the conveying device respectively.

2. The extruder for producing PE one-piece spiral drainage pipe according to claim 1, characterized in that The conveying device comprises a vertical plate (12), a third motor (13), a conveying roller (14), a first bevel gear (15), and a cam (16); The vertical plate (12) is arranged inside the conveying cylinder (3) and is located on the side of the connection point between the conveying cylinder (3) and the mixing cylinder (4). The vertical plate (12) is fixedly connected to the conveying cylinder (3); The third motor (13) is arranged on the side of the conveying cylinder (3) away from the mold (5), the rotating shaft of the third motor (13) transversely passes through the conveying cylinder (3) and the vertical plate (12), the rotating shaft axis of the third motor (13) is parallel to the rotating shaft axis of the second motor (9), the third motor (13) is fixedly connected to the conveying cylinder (3), and the rotating shaft of the third motor (13) is rotatably connected to the vertical plate (12); The conveying roller (14) is arranged inside the conveying cylinder (3) and sleeved on the outer side of the rotating shaft of the third motor (13). The axis of the conveying roller (14) coincides with the axis of the rotating shaft of the third motor (13). The conveying roller (14) is fixedly connected to the rotating shaft of the third motor (13). The first bevel gear (15) is vertically arranged inside the conveying cylinder (3), on the side of the vertical plate (12) away from the mold (5), and is sleeved on the outer side of the rotating shaft of the third motor (13). The axis of the first bevel gear (15) coincides with the axis of the rotating shaft of the third motor (13). The first bevel gear (15) is fixedly connected to the rotating shaft of the third motor (13); The cam (16) is arranged inside the conveying cylinder (3) and sleeved on the outside of the rotating shaft of the third motor (13). The cam (16) is fixedly connected to the rotating shaft of the third motor (13).

3. The extruder for producing PE one-piece spiral drainage pipe according to claim 2, characterized in that The intermittent feeding device comprises a rotating sleeve (17), a telescopic rod (18), a spring (19), a feeding plate (20), and a protruding rod (21); The rotating sleeve (17) is vertically arranged inside the mixing barrel (4), sleeved on the outside of the rotating shaft of the first motor (7), and located below the plurality of stirring blades (8); the axis of the rotating sleeve (17) coincides with the axis of the rotating shaft of the first motor (7), and the rotating sleeve (17) is rotatably connected to the rotating shaft of the first motor (7); The telescopic rod (18) is vertically arranged inside the mixing barrel (4) and below the rotating sleeve (17), and the top end of the telescopic rod (18) is fixedly connected to the bottom end of the rotating sleeve (17); The feed plate (20) is transversely arranged inside the mixing cylinder (4) and below the telescopic rod (18), and the top of the feed plate (20) is fixedly connected to the bottom end of the telescopic rod (18); The spring (19) is vertically arranged inside the mixing cylinder (4) and sleeved on the outside of the telescopic rod (18); the upper end of the spring (19) is fixedly connected to the bottom of the rotating sleeve (17), and the lower end is fixedly connected to the top of the feeding plate (20); The protruding rod (21) is vertically arranged at the lower part of the mixing cylinder (4), and is arranged directly below the feeding plate (20). The top end of the protruding rod (21) is fixedly connected to the bottom end of the feeding plate (20).

4. The extruder for producing PE one-piece spiral drainage pipe according to claim 3, characterized in that The drying device comprises a cylinder (22), a piston (23), a transmission mechanism, a crossbar (29), an air jet pipe (30), a plurality of nozzles (31), an air inlet pipe (32), an air outlet pipe (33), two one-way valves (34), a condenser (36), and an air outlet pipe (37); The transmission mechanism is arranged at the lower part of the transmission cylinder (3), connected to the transmission cylinder (3), and connected to the first bevel gear (15); The cylinder body (22) is arranged below the conveying cylinder (3) and on the side of the conveying mechanism close to the mold (5), and the top of the cylinder body (22) is fixedly connected to the bottom of the conveying cylinder (3); The piston (23) is vertically arranged inside the cylinder (22), and the piston (23) is slidably connected to the cylinder (22) along the inner wall of the cylinder (22); The cross bar (29) is transversely arranged on the side of the cylinder body (22) away from the mold (5), one end of the cross bar (29) is fixedly connected to the piston (23), and the other end passes through the side of the cylinder body (22) and is connected to the transmission mechanism; The air injection pipe (30) is transversely arranged inside the conveying cylinder (3) and above the conveying roller (14), and the air injection pipe (30) is fixedly connected to the inner wall of the top of the conveying cylinder (3); A plurality of the nozzles (31) are vertically arranged inside the conveying cylinder (3) and are located at the lower part of the air injection pipe (30); the upper ends of the plurality of the nozzles (31) are respectively connected to the air injection pipe (30), and the lower ends are respectively connected to the inside of the conveying cylinder (3); The air inlet pipe (32) is arranged on the side of the cylinder (22) close to the mold (5), one end of the air inlet pipe (32) is connected to the interior of the extrusion barrel (2) through the extrusion barrel (2), and the other end passes through the cylinder (22) and is connected to the interior of the cylinder (22); The condenser (36) is arranged above the conveying cylinder (3), and the bottom of the condenser (36) is fixedly connected to the top of the conveying cylinder (3); The exhaust pipe (33) is arranged at the upper part of the cylinder body (22), one end of the exhaust pipe (33) passes through the cylinder body (22) and is connected to the interior of the cylinder body (22), and the other end of the exhaust pipe (33) is connected to the condenser (36); The air outlet pipe (37) is arranged above the conveying cylinder (3) and on the side of the condenser (36) close to the mold (5); one end of the air outlet pipe (37) is connected to the condenser (36), and the other end passes through the conveying cylinder (3) and is connected to the air injection pipe (30); The two one-way valves (34) are respectively arranged inside the air intake pipe (32) and the exhaust pipe (33), and the two one-way valves (34) are respectively fixedly connected to the air intake pipe (32) and the exhaust pipe (33).

5. The extruder for producing PE one-piece spiral drainage pipe according to claim 4, characterized in that The transmission mechanism comprises a first rotating shaft (24), a second bevel gear (25), a rotating disk (26), an eccentric column (27), and a connecting rod (28); The first rotating shaft (24) is vertically arranged at the lower part of the conveying cylinder (3), and is arranged on the side of the vertical plate (12) away from the mold (5); the first rotating shaft (24) passes through the conveying cylinder (3); the axis of the first rotating shaft (24) is vertical; and the first rotating shaft (24) is rotatably connected to the conveying cylinder (3); The second bevel gear (25) is transversely arranged inside the conveying cylinder (3) and sleeved on the outer side of the first rotating shaft (24); the axis of the second bevel gear (25) coincides with the axis of the first rotating shaft (24); the second bevel gear (25) is fixedly connected to the first rotating shaft (24), and the second bevel gear (25) is meshed with the first bevel gear (15); The turntable (26) is transversely arranged below the conveying cylinder (3) and sleeved on the outer side of the first rotating shaft (24). The axis of the turntable (26) coincides with the axis of the first rotating shaft (24). The turntable (26) is fixedly connected to the first rotating shaft (24). The eccentric column (27) is vertically arranged below the rotating disk (26), and the top of the eccentric column (27) is fixedly connected to the bottom of the rotating disk (26); The connecting rod (28) is arranged horizontally below the rotating disk (26), one end of the connecting rod (28) is sleeved on the outside of the eccentric column (27) and is rotatably connected to the eccentric column (27), and the other end is hinged to the cross rod (29), and the axis of the hinge is vertical.

6. The extruder for producing PE one-piece spiral drainage pipe according to claim 1, characterized in that : A plurality of stirring blades (8) are evenly distributed on the outer side of the rotating shaft of the first motor (7).

7. The extruder for producing PE integrally formed spiral drainage pipe according to claim 1, characterized in that The extrusion barrel (2) is made of alloy steel.

8. The extruder for producing PE one-piece spiral drainage pipe according to claim 2, characterized in that The vertical plate (12) and the conveying cylinder (3) are fixed by welding.

9. The extruder for producing PE integrally formed spiral drainage pipe according to claim 4, characterized in that : A plurality of the nozzles (31) are evenly distributed at the lower part of the air injection pipe (30).

10. The extruder for producing PE integrally formed spiral drainage pipe according to claim 4, characterized in that The cylinder body (22) and the conveying cylinder (3) are fixed by welding.

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