An energy-saving, environmentally friendly and efficient twin-screw extruder

Abstract

The present invention is applicable to the technical field of screw extruders and provides an energy-saving, environmentally friendly and efficient twin-screw extruder, comprising a twin-screw barrel; an annular plate is fixed on the peripheral side of the twin-screw barrel; a swivel is rotatably arranged on the side of the annular plate; a feeding part is fixed on the end of the swivel; the feeding part comprises a plurality of arc-shaped heat-conducting plates and U-shaped heat-conducting plates connected in sequence; a temperature difference power generation part is clamped between the twin-screw barrel and the feeding part; an outer insulation cylinder is fixed on the side of the annular plate; a storage funnel is connected to the top of the outer insulation cylinder, and a downward-inclined feeding channel is connected to the bottom thereof; a feeding funnel is connected to the top of the twin-screw barrel; the device drives the temperature difference power generation part to rotate synchronously by controlling the rotation of the feeding part, and the feeding part transfers the raw materials in the storage funnel to realize the preheating of the raw materials during transportation, and at the same time, realizes the cooling of the cold end, improves the power generation efficiency, and realizes the efficient recovery of heat from the twin-screw extruder.

Description

Technical Field

[0001] The invention relates to the technical field of screw extruders, and more particularly to an energy-saving, environmentally friendly and efficient twin-screw extruder. Background Art

[0002] The material in the twin-screw extruder is transported forward in a manner that does not completely fill the screw groove, which has the effect of forcing the material to move forward. At the same time, the twin-screw extruder also has a good dispersion and mixing effect on the material at the meshing point of the two screws.

[0003] Wood plastic board is produced by wood plastic extruder production line, which consists of feed hopper, twin screw extruder, vacuum shaping table, haul-off machine, cutting machine and material rack. The mesh size of wood powder and plastic particles used in wood plastic extruder is 80-120 mesh.

[0004] Twin-screw extruders require barrel heating during the raw material processing process. Plastic particles are extruded and pelletized through the heated barrel. The barrel temperature is controlled through water cooling, where cooling water enters the barrel to remove heat, thereby controlling the barrel temperature to fluctuate within a set range. However, the water heated by the barrel needs to be cooled by a condenser before being recirculated into the barrel. During this process, the heat used to cool the barrel water is wasted. Furthermore, existing twin-screw extruders lack a mechanism for preheating the raw materials. Therefore, it is essential to utilize the heat generated during the barrel's operation to preheat the raw materials. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an energy-saving, environmentally friendly and efficient twin-screw extruder. The hot end of the temperature difference power generation part is attached to the outer wall of the twin-screw barrel, and its cold end and heat-conducting fins are attached to the arc-shaped heat-conducting plate and the U-shaped heat-conducting plate respectively. The rotating feeding part is controlled to drive the temperature difference power generation part to rotate synchronously. The feeding part transfers the raw materials in the storage funnel to between two adjacent U-shaped heat-conducting plates in a quantitative manner. Heat exchange occurs between the raw materials and the U-shaped heat-conducting plates to achieve preheating of the raw materials. At the same time, the cold end is cooled, the power generation efficiency is improved, and the efficient recovery of heat from the twin-screw extruder is achieved.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A twin-screw extruder according to claim 1, wherein the extruder is provided with a plurality of screws, the plurality of screws being connected to each other via a plurality of channels, and the plurality of channels being connected to each other via a plurality of channels.

[0008] The present invention is further configured as follows: the temperature difference power generation part includes a plurality of heat insulation plates and power generation units that are staggered in sequence; each of the heat insulation plates and power generation units is arranged concentrically; the power generation unit includes a cold end and a hot end; the cold end and the hot end are both made of insulating ceramic materials; a first copper sheet is fixed to the bottom surface of the cold end; a second copper sheet and a third copper sheet are fixed to the surface of the hot end; the first copper sheet is electrically connected to the second copper sheet and the third copper sheet with an N-type semiconductor and a P-type semiconductor respectively; the side surface of the cold end is fixed with heat-conducting fins that are clipped and adapted to the U-shaped heat-conducting plate.

[0009] The present invention is further configured as follows: a first cable is electrically connected between the N-type semiconductor on the power generation unit and the P-type semiconductor on the adjacent power generation unit; a positive conductive plate and a negative conductive plate are fixedly connected to the side surfaces of the two adjacent heat insulation plates; a second cable is electrically connected between the second copper sheet and the third copper sheet on one power generation unit and the positive conductive plate and the negative conductive plate, respectively; a positive conductive ring rail and a negative conductive ring rail arranged concentrically are fixedly connected to the side surface of the annular plate; the ends of the positive conductive ring rail and the negative conductive ring rail are electrically connected to the positive conductive column and the negative conductive column, respectively; a battery energy storage device is installed on the side surface of the annular plate; a circuit amplification module is electrically connected between the input end of the battery energy storage device and the positive conductive column and the negative conductive column.

[0010] The present invention is further configured as follows: straight heat exchange pipes are evenly arranged between the inner walls of the storage funnel from top to bottom; a sealing groove is provided at the end of the outer insulation tube; an exhaust part is plugged into the end of the outer insulation tube; the exhaust part includes a positioning ring; a sealing ring that is plugged into the sealing groove is fixed on one side of the positioning ring; a fixing plate that is fixed to the bottom surface of the positioning ring and is fixed to the side of the material conveying channel by fastening bolts.

[0011] The present invention is further configured as follows: an exhaust pipe is evenly fixed through the other opposite side of the positioning ring; an annular disk is connected between the ends of each of the exhaust pipes; an exhaust fan is fixedly installed on the side of the annular disk; an air disk is fixed on the output end of the exhaust fan; a plurality of ear tubes are evenly connected and arranged on the side of the air disk; the ear tubes are connected to one end of the corresponding heat exchange straight pipe through a high-temperature resistant hose; a plurality of ventilation slots are evenly opened on the side of the annular plate between the arc-shaped heat conduction plate and the outer insulation tube.

[0012] The present invention is further configured as follows: a plurality of heat exchange grooves are evenly opened on the outer peripheral side of the twin-screw barrel; a heat exchange elbow is fixed inside the heat exchange groove; the two ends of the heat exchange elbow are respectively connected to a cold water inlet pipe and a hot water outlet pipe; a heat exchange spiral tube is fixed on the peripheral side of the feeding funnel; one end of the heat exchange spiral tube is connected to the hot water outlet pipe, and the other end thereof is connected to an external water supply pipe.

[0013] The present invention is further configured as follows: a gear ring is fixed on the outer peripheral side of the rotating ring; a servo motor is fixedly installed on the side of the annular plate; and a first gear meshing with the gear ring is fixed on the output end of the servo motor through a reducer.

[0014] The present invention is further configured as follows: a gear ring is fixed to the outer peripheral side of the turntable; a drive motor is fixedly installed on the side of the annular plate; and a second gear meshing with the gear ring is fixed to the output end of the drive motor through a reducer.

[0015] The advantages of the present invention are:

[0016] 1. The present invention adheres the hot end of the temperature difference power generation unit to the outer wall of the twin-screw barrel, and adheres the cold end and the heat-conducting fins to the arc-shaped heat-conducting plate and the U-shaped heat-conducting plate respectively. The rotating feeding unit is controlled to drive the temperature difference power generation unit to rotate synchronously. The feeding unit quantitatively transfers the raw materials in the storage funnel to between two adjacent U-shaped heat-conducting plates. Heat exchange occurs between the raw materials and the U-shaped heat-conducting plates to achieve preheating of the raw materials. At the same time, the cold end is cooled, the power generation efficiency is improved, the heat of the twin-screw extruder is efficiently recovered, and energy saving and environmental protection are achieved.

[0017] 2. The present invention controls the exhaust part to draw the hot air between adjacent U-shaped heat conduction plates into the heat exchange straight pipe inside the storage funnel, thereby preheating the raw materials inside the storage funnel. At the same time, the flowing hot air accelerates the heat exchange of the raw materials between the adjacent U-shaped heat conduction plates, further improving the preheating effect of the raw materials.

[0018] 3. The present invention heats the cold water flowing inside the heat exchange elbow through a twin-screw barrel, and the heated hot water enters the heat exchange spiral tube to preheat the raw materials inside the feeding funnel, further improving the preheating effect of the raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1This is a structural schematic diagram of an energy-saving, environmentally friendly and efficient twin-screw extruder of the present invention.

[0020] Figure 2 For the present invention Figure 1 Schematic diagram of the structure without the exhaust part.

[0021] Figure 3 For the present invention Figure 2 Schematic diagram of the structure from the right view perspective.

[0022] Figure 4 For the present invention Figure 3 A magnified view of area A.

[0023] Figure 5 For the present invention Figure 2 A structural diagram from another angle.

[0024] Figure 6 For the present invention Figure 2 Schematic diagram of the structure of the left view.

[0025] Figure 7 For the present invention Figure 6 Magnified view of area B.

[0026] Figure 8 It is a structural schematic diagram of the temperature difference power generation unit of the present invention.

[0027] Figure 9 It is a structural schematic diagram of the thermoelectric power generation unit of the present invention from a front view perspective.

[0028] Figure 10 For the present invention Figure 9 Magnified view of area C.

[0029] Figure 11 It is a structural schematic diagram of the thermoelectric power generation unit of the present invention from a rear view perspective.

[0030] Figure 12 For the present invention Figure 11 Magnified view of area D.

[0031] Figure 13 It is a structural schematic diagram of the exhaust part of the present invention.

[0032] Figure 14 It is a structural schematic diagram of the ventilation part of the present invention from another angle.

[0033] In the figure: 1. Twin-screw barrel; 2. Annular plate; 3. Rotating ring; 4. Curved heat-conducting plate; 5. U-shaped heat-conducting plate; 6. External heat-insulating barrel; 7. Storage hopper; 8. Feed channel; 9. Feeding hopper; 10. Fixing ring; 11. Baffle ring; 12. Feeding port; 13. Rotating plate; 14. Partition; 15. Temperature difference power generation unit; 16. Heat-insulating plate; 17. Power generation unit; 18. Cold end; 19. Hot end; 20. First copper sheet; 21. Second copper sheet; 22. Third copper sheet; 23. N-type semiconductor; 24. P-type semiconductor; 25. Heat-conducting fin; 26. First cable; 27. Positive conductive plate; 28. Negative conductive plate; 29. , positive conductive ring rail; 30, negative conductive ring rail; 31, positive conductive column; 32, negative conductive column; 33, battery energy storage device; 34, heat exchange straight pipe; 35, sealing groove; 36, exhaust part; 37, positioning ring; 38, sealing ring; 39, fixing plate; 40, exhaust pipe; 41, annular disk; 42, exhaust fan; 43, wind disk; 44, ear tube; 45, ventilation groove; 46, heat exchange groove; 47, heat exchange elbow; 48, cold water inlet pipe; 49, hot water outlet pipe; 50, heat exchange spiral pipe; 51, gear ring; 52, servo motor; 53, first gear; 54, gear ring; 55, drive motor; 56, second gear. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0036] In the present invention, unless otherwise specified, directions such as "up" and "down" are generally used with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" are generally used with respect to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0037] For example 1, please refer to Figure 1-14 , the present invention provides the following technical solutions:

[0038] An energy-saving, environmentally friendly and efficient twin-screw extruder, specifically, includes a twin-screw barrel 1; an annular plate 2 is fixed to the side surface of the twin-screw barrel 1; a swivel 3 is rotatably provided through the side surface of the annular plate 2; a feed portion is fixed to the end of the swivel 3; the feed portion includes a plurality of arc-shaped heat conducting plates 4 and U-shaped heat conducting plates 5 connected in sequence in an interlaced manner; a temperature difference power generation portion 15 is clamped between the twin-screw barrel 1 and the feed portion.

[0039] An outer insulation tube 6 is fixed to the side of the annular plate 2; a storage funnel 7 is provided on the top of the outer insulation tube 6, and a downward-slanting conveying channel 8 is provided on the bottom thereof; a feeding funnel 9 is provided on the top of the twin-screw barrel 1; a fixing ring 10 is fixed to the bottom discharge port of the conveying channel 8; a baffle ring 11 is fixed to the side of the fixing ring 10; a feeding port 12 connected to the feeding funnel 9 is provided on the side surface of the baffle ring 11; a turntable 13 is rotatably provided on the side surface of the fixing ring 10; a number of partitions 14 that rotate with the outer side surface of the baffle ring 11 are evenly fixed on the inner side surface of the turntable 13.

[0040] The thermoelectric power generation unit 15 includes a plurality of heat insulation plates 16 and power generation units 17 connected in sequence. Each heat insulation plate 16 and power generation unit 17 is arranged concentrically. The power generation unit 17 includes a cold end 18 and a hot end 19. Both the cold end 18 and the hot end 19 are made of insulating ceramic material.

[0041] Working principle of this embodiment 1:

[0042] By fitting the hot end 19 of the temperature difference power generation unit 15 to the outer wall of the twin-screw barrel 1, and fitting the cold end 18 and the heat-conducting fins 25 to the arc-shaped heat-conducting plate 4 and the U-shaped heat-conducting plate 5 respectively, the rotating feeding unit is controlled to drive the temperature difference power generation unit 15 to rotate synchronously, and the feeding unit transfers the raw materials in the storage funnel 7 to between the two adjacent U-shaped heat-conducting plates 5 in a quantitative manner. Heat exchange occurs between the raw materials and the U-shaped heat-conducting plates 5, thereby preheating the raw materials and, at the same time, cooling the cold end 18, improving the power generation efficiency, and realizing efficient heat recovery of the twin-screw extruder.

[0043] For example 2, please refer to Figure 1-14 , this second embodiment makes the following improvements on the basis of the first embodiment. Specifically, a first copper sheet 20 is fixed to the bottom surface of the cold end 18; a second copper sheet 21 and a third copper sheet 22 are fixed to the surface of the hot end 19; the first copper sheet 20 is electrically connected to the second copper sheet 21 and the third copper sheet 22 via an N-type semiconductor 23 and a P-type semiconductor 24 respectively; a heat-conducting fin 25 that is snap-fitted with the U-shaped heat-conducting plate 5 is fixed to the side surface of the cold end 18; the bottom of each heat insulation plate 16 and the bottom of the hot end 19 are rotatably fitted with the outer wall of the twin-screw barrel 1.

[0044] A first cable 26 is electrically connected between the N-type semiconductor 23 on the power generation unit 17 and the P-type semiconductor 24 on the adjacent power generation unit 17; a positive conductive plate 27 and a negative conductive plate 28 are fixedly connected to the side surfaces of the two adjacent thermal insulation plates 16; and a second cable is electrically connected between the second copper sheet 21 and the third copper sheet 22 on one power generation unit 17 and the positive conductive plate 27 and the negative conductive plate 28, respectively.

[0045] A positive conductive ring rail 29 and a negative conductive ring rail 30 are fixedly connected to the side of the annular plate 2, which are arranged concentrically. The ends of the positive conductive ring rail 29 and the negative conductive ring rail 30 are electrically connected to the positive conductive column 31 and the negative conductive column 32, respectively. A battery energy storage device 33 is installed on the side of the annular plate 2. A circuit amplification module is electrically connected between the input end of the battery energy storage device 33 and the positive conductive column 31 and the negative conductive column 32.

[0046] Working principle of the second embodiment:

[0047] The hot end 19 of the power generation unit 17 can be used to absorb the waste heat released by the outer wall of the twin-screw barrel 1, and the exhaust part 36 and the raw materials in the transfer process ensure that the cold end 18 of the power generation unit 17 is cooled during normal operation, so that a temperature difference is generated between the hot end 19 and the cold end 18 of the power generation unit 17, thereby generating current; the adjacent groups of power generation units 17 are connected in series through the corresponding first cables 26, and the current generated by the temperature difference power generation unit 15 can be amplified by the circuit amplification module. The battery energy storage device 33 can store the current, realize the conversion of thermal energy into electrical energy, and improve the efficient recovery and utilization of the heat energy generated during the operation of the twin-screw extruder.

[0048] As the thermoelectric power generation unit 15 rotates along with the feeding unit, its positive conductive plate 27 and negative conductive plate 28 slide on the positive conductive ring rail 29 and negative conductive ring rail 30 respectively, thereby ensuring normal conduction and charging between the thermoelectric power generation unit 15 and the battery energy storage device 33. Since the thermoelectric power generation unit 15 is in a state of consistent and slow rotation, the thermoelectric power generation unit 15 and the battery energy storage device 33 cannot be connected by conventional cables. Therefore, a sliding electrical connection method is adopted in which the positive conductive ring rail 29, the negative conductive ring rail 30 and the positive conductive plate 27, the negative conductive plate 28 are respectively connected on the positive conductive ring rail 29 to avoid the problem of wire winding (similar to the electrical connection method of a contactor).

[0049] For example three, please refer to Figure 1-14 , this embodiment 3 makes the following improvements on the basis of embodiment 2. Specifically, heat exchange straight pipes 34 are evenly provided between the inner walls of the storage funnel 7 from top to bottom; a sealing groove 35 is opened at the end of the outer insulation tube 6; an exhaust part 36 is inserted into the end of the outer insulation tube 6; the exhaust part 36 includes a positioning ring 37; a sealing ring 38 that is inserted into the sealing groove 35 is fixed on one side of the positioning ring 37; a fixing plate 39 fixed to the bottom surface of the positioning ring 37 is fixed to the side of the material conveying channel 8 by fastening bolts.

[0050] An exhaust pipe 40 is evenly fixed on the other opposite side of the positioning ring 37; an annular disk 41 is connected between the ends of each exhaust pipe 40; an exhaust fan 42 is fixedly installed on the side of the annular disk 41; an air disk 43 is fixed on the output end of the exhaust fan 42; a number of ear tubes 44 are evenly connected to the side of the air disk 43; the ear tubes 44 are connected to one end of the corresponding heat exchange straight pipe 34 through a high-temperature resistant hose; a number of ventilation slots 45 are evenly opened on the side of the annular plate 2 between the arc-shaped heat conducting plate 4 and the outer insulation tube 6.

[0051] A plurality of heat exchange grooves 46 are evenly arranged on the outer side of the twin-screw barrel 1; a heat exchange elbow 47 is fixed inside the heat exchange groove 46; the two ends of the heat exchange elbow 47 are respectively connected to a cold water inlet pipe 48 and a hot water outlet pipe 49; a heat exchange spiral tube 50 is fixed on the side of the feeding funnel 9; one end of the heat exchange spiral tube 50 is connected to the hot water outlet pipe 49, and the other end is connected to the external water supply pipe.

[0052] A gear ring 51 is fixed to the outer peripheral side of the rotating ring 3; a servo motor 52 is fixedly installed on the side of the annular plate 2; and a first gear 53 meshing with the gear ring 51 is fixed to the output end of the servo motor 52 through a reducer.

[0053] A gear ring 54 is fixed to the outer peripheral side of the turntable 13; a drive motor 55 is fixedly installed on the side of the annular plate 2; a second gear 56 meshing with the gear ring 54 is fixed to the output end of the drive motor 55 through a reducer.

[0054] Working principle of the third embodiment:

[0055] By controlling and starting the servo motor 52, the first gear 53 is driven to rotate slowly, thereby driving the ring gear 51 and the rotating ring 3 to rotate slowly and synchronously. The rotation of the rotating ring 3 drives the feeding part at its end to rotate slowly and synchronously. The raw materials inside the storage funnel 7 fall into the space between the two adjacent U-shaped heat conduction plates 5 in a quantitative manner in turn, realizing the rotation and transportation of the raw materials. During the transportation process, the raw materials exchange heat with the hot air between the arc-shaped heat conduction plate 4 and the outer insulation tube 6, realizing preheating of the raw materials during transportation. At the same time, the temperature of the arc-shaped heat conduction plate 4, the U-shaped heat conduction plate 5, the heat conduction fins 25 and the cold end 18 is reduced, that is, the temperature difference between the hot end 19 and the cold end 18 is increased, thereby improving the power generation efficiency.

[0056] When the two adjacent U-shaped heat conducting plates 5 rotate downward, the raw materials therein fall into the inside of the feeding channel 8 and slide along the inner bottom surface of the feeding channel 8 into the inside of the turntable 13. The control starts the driving motor 55 to drive the second gear 56 to rotate slowly, thereby driving the gear ring 54 and the turntable 13 to rotate slowly. The rotation of the turntable 13 drives each group of partitions 14 to rotate synchronously. The sliding raw materials are fed into the feeding port 12 by the rotating partitions 14 and fall into the inside of the feeding funnel 9, realizing automatic feeding of the twin-screw extruder and improving work efficiency.

[0057] By controlling and starting the exhaust fan 42, external cold air enters through the ventilation slots 45, and the hot air between the arc-shaped heat-conducting plate 4 and the outer insulation tube 6 is extracted, thereby accelerating the flow of hot air in the internal space, further improving the preheating effect and efficiency of the raw materials between the two adjacent U-shaped heat-conducting plates 5, and at the same time, further reducing the temperature of the arc-shaped heat-conducting plate 4, the U-shaped heat-conducting plate 5, the heat-conducting fins 25 and the cold end 18, thereby further improving the power generation efficiency; the hot air after heat exchange enters each group of ear tubes 44 through the wind disk 43, and enters the heat exchange straight pipe 34 through the corresponding high-temperature resistant hose, exchanges heat with the raw materials inside the storage funnel 7, and realizes preheating of the raw materials inside the storage funnel 7.

[0058] The cold water flowing inside the heat exchange elbow 47 is heated by the outer wall of the twin-screw barrel 1, and the heated hot water flows into the heat exchange spiral tube 50 to further preheat the raw materials inside the feeding funnel 9, further improving the preheating effect of the raw materials inside the feeding funnel 9 and improving the melting and molding efficiency of the subsequent twin-screw extruder; by controlling the flow rate of the cold water input, the heating temperature of the twin-screw barrel 11 can be kept within the set range.

[0059] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0060] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0061] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0062] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

[0063] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An energy-saving, environmentally friendly and efficient twin-screw extruder, comprising a twin-screw barrel; characterized in that: An annular plate is fixed to the circumferential side of the twin-screw barrel; a rotating ring is rotatably provided on the side of the annular plate; a feeding portion is fixed to the end of the rotating ring; the feeding portion includes a plurality of arc-shaped heat conducting plates and U-shaped heat conducting plates connected in sequence; a temperature difference power generation portion is clamped between the twin-screw barrel and the feeding portion; An outer heat-insulating cylinder is fixed to the side of the annular plate; a storage funnel is connected to the top of the outer heat-insulating cylinder, and a downward-slanting feeding channel is connected to the bottom of the outer heat-insulating cylinder; a feeding funnel is connected to the top of the twin-screw barrel; a fixed ring is connected and fixed at the discharge port at the bottom of the feeding channel; a retaining ring is fixed to the side of the fixed ring; a feeding port connected to the feeding funnel is opened on the side surface of the retaining ring; a turntable is rotatably provided on the side surface of the fixed ring; a number of partitions that rotate in coordination with the outer side surface of the retaining ring are evenly fixed on the inner side surface of the turntable; The temperature difference power generation part includes several insulation plates and power generation units that are connected in sequence in an interlaced manner; each of the insulation plates and power generation units is arranged concentrically; the power generation unit includes a cold end and a hot end; both the cold end and the hot end are made of insulating ceramic; a first copper sheet is fixed to the bottom surface of the cold end; a second copper sheet and a third copper sheet are fixed to the surface of the hot end; the first copper sheet is electrically connected to the second copper sheet and the third copper sheet with an N-type semiconductor and a P-type semiconductor respectively; heat-conducting fins that are adapted to the U-shaped heat-conducting plate are fixed to the side surfaces of the cold end; straight heat exchange tubes are evenly arranged from top to bottom through the inner walls of the storage funnel.

2. The energy-saving, environmentally friendly and efficient twin-screw extruder according to claim 1, characterized in that: A first cable is electrically connected between the N-type semiconductor on the power generation unit and the P-type semiconductor on the adjacent power generation unit; a positive conductive plate and a negative conductive plate are fixedly connected to the sides of the two adjacent heat insulation plates; a second cable is electrically connected between the second copper sheet and the third copper sheet on one power generation unit and the positive conductive plate and the negative conductive plate respectively; The side of the annular plate is fixedly connected to a positive conductive ring rail and a negative conductive ring rail arranged concentrically; the ends of the positive conductive ring rail and the negative conductive ring rail are electrically connected to a positive conductive column and a negative conductive column respectively; a battery energy storage device is installed on the side of the annular plate; a circuit amplification module is electrically connected between the input end of the battery energy storage device and the positive conductive column and the negative conductive column.

3. The energy-saving, environmentally friendly and efficient twin-screw extruder according to claim 2, characterized in that: The end of the outer heat-insulating tube is provided with a sealing groove; the end of the outer heat-insulating tube is plugged with an exhaust part; The exhaust part includes a positioning ring; a sealing ring that is plugged into the sealing groove is fixed on one side of the positioning ring; and a fixing plate that is fixed to the bottom of the positioning ring and is fixed to the side of the material conveying channel by fastening bolts.

4. The energy-saving, environmentally friendly and efficient twin-screw extruder according to claim 3, characterized in that: An exhaust pipe is evenly fixed on the other opposite side of the positioning ring; an annular disk is connected between the ends of each exhaust pipe; an exhaust fan is fixedly installed on the side of the annular disk; an air disk is fixed on the output end of the exhaust fan; a number of ear tubes are evenly connected and arranged on the side of the air disk; the ear tubes are connected to one end of the corresponding heat exchange straight pipe through a high-temperature resistant hose; a number of ventilation slots are evenly opened on the side of the annular plate between the arc-shaped heat conduction plate and the outer insulation tube.

5. The energy-saving, environmentally friendly and efficient twin-screw extruder according to claim 4, characterized in that: A plurality of heat exchange grooves are evenly arranged on the outer peripheral side of the twin-screw barrel; a heat exchange elbow is fixed inside the heat exchange groove; the two ends of the heat exchange elbow are respectively connected to a cold water inlet pipe and a hot water outlet pipe; a heat exchange spiral tube is fixed on the peripheral side of the feeding funnel; one end of the heat exchange spiral tube is connected to the hot water outlet pipe, and the other end is connected to the external water supply pipe.

6. The energy-saving, environmentally friendly and efficient twin-screw extruder according to claim 5, characterized in that: A gear ring is fixed on the outer peripheral side of the rotating ring; a servo motor is fixedly installed on the side of the annular plate; and a first gear meshing with the gear ring is fixed on the output end of the servo motor through a reducer.

7. The energy-saving, environmentally friendly and efficient twin-screw extruder according to claim 6, characterized in that: A gear ring is fixed on the outer peripheral side of the turntable; a driving motor is fixedly installed on the side of the annular plate; and a second gear meshing with the gear ring is fixed on the output end of the driving motor through a reducer.

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