A high-efficiency reducer for a single-screw extruder

Abstract

This invention relates to the field of speed reducer technology and discloses a high-efficiency speed reducer for a single-screw extruder. The reducer includes a gearbox housing with a support base at its bottom. An input shaft passes through the gearbox housing, and a reduction gear meshes on the input shaft. An output shaft passes through the gearbox housing, and the reduction gear is mounted on the output shaft. An observation window is provided on one side of the gearbox housing for observing its interior. A spraying assembly is also provided on one side of the gearbox housing. A defoaming assembly is provided at the bottom of the gearbox housing. The spraying assembly sprays oil onto the meshing tooth roots of the input shaft and the reduction gear. The defoaming assembly eliminates air bubbles generated during oil circulation within the gearbox housing. Compared to existing technologies, this invention provides precise lubrication to the meshing tooth roots of the input shaft and the reduction gear, improving gear meshing efficiency and reducing wear.

Description

Technical Field

[0001] This invention relates to the field of speed reducer technology, specifically a high-efficiency speed reducer for a single-screw extruder. Background Technology

[0002] Single-screw extruders are commonly used equipment in the plastics and rubber processing industries, and their core transmission component is typically a speed reducer. The speed reducer not only needs to convert the high-speed rotation of the motor into a low-speed, high-torque output, but also needs to ensure good stability and reliability under long-term continuous operation. Most existing speed reducers for single-screw extruders use traditional oil immersion lubrication or splash lubrication methods, achieving gear surface lubrication and cooling through gear agitation in an oil bath.

[0003] Traditional oil immersion or splash lubrication methods are insufficient to guarantee point lubrication in the gear meshing area, especially at the root of the meshing teeth. Under high-speed, heavy-load conditions, the oil film in this area is prone to rupture, leading to gear scuffing, pitting, wear, and even premature failure. Furthermore, the oil has a high air content: during operation, the high-speed agitation of the gears and shafts easily entrains air into the oil, forming microbubbles. These bubbles enter the gear meshing area with the oil, disrupting the oil film continuity, reducing load-bearing capacity and cooling performance, and in severe cases, causing dry friction and localized overheating. Therefore, this application discloses a high-efficiency reducer for single-screw extruders to meet the requirements of point-jet lubrication in the gear meshing area. Summary of the Invention

[0004] Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a high-efficiency reducer for single-screw extruders, which has advantages such as improved gear meshing efficiency and reduced wear. It solves the problem that traditional oil immersion or splash lubrication cannot guarantee fixed-point lubrication of the gear meshing area, especially the root of the meshing teeth.

[0006] Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency reducer for a single-screw extruder, comprising a reducer housing, a support base at the bottom of the reducer housing, an input shaft passing through the reducer housing, multiple sets of reduction gears rotatably mounted on the inner wall of the reducer housing, the input shaft meshing with one of the reduction gears, an output shaft passing through the reducer housing, the output shaft coaxially mounted with one of the reduction gears, an observation window on one side of the reducer housing for observing the interior of the reducer housing, an installation cylinder passing through the inner wall of one side of the reducer housing, a connecting pipe connected to one end of the installation cylinder, an oil suction pump at one end of the connecting pipe, a spraying assembly on one side of the reducer housing, and a defoaming assembly passing through the bottom of the reducer housing, the defoaming assembly being located between the support bases; the spraying assembly is used to spray oil onto the meshing tooth roots of the input shaft and the reduction gears; the defoaming assembly is used to eliminate air bubbles generated during the circulation of oil within the reducer housing.

[0008] Preferably, the injection assembly includes a mounting cylinder that penetrates the inner wall of one side of the gearbox housing. The mounting cylinder is provided with multiple sets of mounting seats, each mounting seat having a movable groove. A movable plate is provided on the outer side of the mounting cylinder, and multiple sets of contact plates are provided on the movable plate. The contact plates are slidably disposed within the movable grooves. A guide groove is provided on the movable plate, and the guide groove has a curved arc structure. Multiple sets of rotating rods are rotatably disposed on the mounting cylinder. A deflecting vane is provided on one side of each rotating rod, and adjacent deflecting vanes are in contact with each other. A limit rod is provided at the top of each rotating rod, and one end of the limit rod extends into the guide groove.

[0009] Preferably, the defoaming component includes a collection cylinder that passes through the bottom of the gearbox housing, one end of the oil suction pump is connected to the collection cylinder, a set of defoaming plates are provided on the inner wall of the collection cylinder, the defoaming plates are wavy, multiple sets of contact grooves are opened on one side surface of the defoaming plates, and extension plates are provided at both ends of the defoaming plates, the extension plates are curved.

[0010] Preferably, one side of the movable plate is made of cast iron, an electromagnet is provided on one side of the inner wall of the gearbox housing, the electromagnet is coaxially arranged with the mounting cylinder, the electromagnet is located on one side of the movable plate, a control source is provided at one end of the electromagnet, and a temperature sensor and a speed sensor are provided inside the gearbox housing.

[0011] Preferably, the movable plate may also be provided with an adjusting cylinder, the adjusting cylinder is hollow, the inner wall of the adjusting cylinder is provided with an internal thread, and a threaded rod that meshes with the internal thread passes through the inner wall of the gearbox housing.

[0012] Preferably, a concentrating plate is provided at one end of the deflecting blade, and the concentrating plate is semi-circular.

[0013] Preferably, a support frame is provided on the inner wall of the collecting cylinder, and a rotating shaft is rotatably mounted on the support frame. Multiple sets of drive blades are provided at the bottom of the rotating shaft, and multiple sets of collecting plates are provided at the top of the rotating shaft. The collecting plates are curved, and a guide groove is provided on one side surface of the collecting plate. The thickness of one end of the collecting plate gradually increases, and one bottom side of the collecting plate contacts the bottom of the gearbox housing.

[0014] Preferably, a magnetic trap is provided at the bottom of the collecting cylinder for collecting friction debris in the oil inside the collecting cylinder.

[0015] Preferably, the bottom of the gearbox housing is provided with an inclined plate, the height of which gradually decreases towards one side of the collection cylinder.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention provides a high-efficiency speed reducer for a single-screw extruder, which has the following advantages:

[0018] 1. This single-screw extruder uses a high-efficiency reducer. The input shaft drives a reduction gear to rotate under external power. The reduction gear meshes with the output shaft to transmit power, thereby reducing the speed and outputting the required torque. During the operation of the gearbox, the spraying assembly can perform targeted spray lubrication on the tooth root positions of the input shaft and the meshing side of the reduction gear, ensuring sufficient oil film coverage on the tooth surfaces during high-speed meshing. The circulating oil inside the gearbox is easily entangled with air under the high-speed agitation of the input shaft, forming a large number of microbubbles. If these bubbles enter the tooth meshing area with the oil flow, it will cause the lubricating oil film to break and lubrication performance to decrease. The defoaming assembly defoams the oil... Defoaming treatment is performed to prevent air bubble accumulation from affecting lubrication. An observation window allows real-time monitoring of the gearbox's internal operation and oil status, facilitating monitoring and maintenance. A spray assembly on the gearbox ensures precise lubrication of the input shaft and the meshing gear teeth, improving gear meshing efficiency and reducing wear. The defoaming assembly effectively reduces air bubbles generated during oil circulation, ensuring lubricant stability and cooling effect, and extending the service life of gears and bearings. The observation window allows for direct monitoring of the gearbox's internal operating status, facilitating timely maintenance and overall improving the gearbox's operational reliability and efficiency.

[0019] 2. This single-screw extruder uses a high-efficiency reducer. An arc-shaped guide groove is provided on the moving plate. The tops of multiple rotating rods are inserted into the guide groove via limiting rods. An electromagnet is installed on the inner wall of the reducer housing, coaxially arranged with the moving plate. When energized, the electromagnet attracts or releases the moving plate through magnetic force. As the moving plate moves, the limiting rods move along the guide groove, causing the rotating rods to rotate. A deflecting vane is provided on one side of the rotating rod. Adjacent deflecting vanes support and interact with each other. The end concentrator plate converges and guides the deflected oil flow, adjusting the injection direction. This ensures that the input shaft and the root of the gear teeth on the meshing side are always adequately lubricated, preventing tooth surface wear and overheating failure caused by oil film rupture.

[0020] 3. This single-screw extruder uses a high-efficiency reducer. The combination of electromagnet and control source extends the injection control from mechanical adjustment to electromagnetic intelligent control, improving response speed and automation level. At the same time, the introduction of temperature and speed sensors enables the injection action to form a closed-loop feedback control with the actual operating state of the gear set, thereby realizing dynamic adjustment of lubricating oil quantity and injection direction. This ensures sufficient lubrication and cooling under high loads while avoiding excessive injection under low loads, improving the utilization efficiency of lubricating oil, enhancing the lubrication reliability and lifespan of the gear set, reducing oil waste and excessive injection, and improving the energy efficiency and operational stability of the reducer.

[0021] 4. This single-screw extruder uses a high-efficiency reducer. During operation, the screw rod rotates manually or driven by a motor. Through the transmission relationship of the screw pair, it drives the adjusting cylinder to move precisely along the axial direction. The adjusting cylinder is fixedly connected to the moving plate, thus directly driving the moving plate to achieve position adjustment. When the moving plate is displaced along the axial direction under the action of the adjusting cylinder, the corresponding contact plate position and the deflection angle of the rotating rod also change accordingly, thereby precisely changing the spray direction and spray position of the nozzle in the spray assembly, ensuring that the lubricating oil is delivered to the target tooth surface area at a fixed point.

[0022] 5. This single-screw extruder uses a high-efficiency reducer. When the oil suction pump starts to pump oil, suction is generated at the bottom of the collecting cylinder, causing the oil inside the collecting cylinder to flow. The flowing oil drives the drive blades at the bottom of the rotating shaft to rotate, causing the rotating shaft to rotate synchronously, which in turn drives the collecting plate at the top to work. During the rotation, the collecting plate contacts the bottom of the gearbox, continuously guiding and collecting the dispersed oil into the collecting cylinder. The collecting plate is arranged in a curved shape and has guide grooves on its surface, gradually thickening at one end. During the rotation, it can generate diversion and acceleration effects, allowing the oil to enter the collecting cylinder faster and more concentratedly. At the same time, the corrugated defoaming plate and its surface contact grooves on the inner wall of the collecting cylinder can disturb and shear the flowing oil, accelerating the aggregation and collapse of bubbles. This can significantly reduce the gas content of the oil, ensure the continuity and load-bearing capacity of the lubricating oil film, thereby improving the lubrication and cooling effect of the reducer gear set, extending the service life of the transmission components, and improving the operational stability and reliability of the equipment.

[0023] 6. This single-screw extruder uses a high-efficiency reducer, which is fixed to the bottom of the collecting cylinder by a magnet or magnetic rod assembly. When the lubricating oil flows through the collecting cylinder during circulation, the ferromagnetic wear debris entrained in it will be attracted and fixed on the surface of the collector under the action of the magnetic field, thus preventing it from continuing to flow with the oil into the gear meshing area or the injection component. As the oil continues to circulate, the magnetic collector can continuously intercept and deposit ferromagnetic debris, thereby purifying the oil. It can effectively remove the ferromagnetic wear debris generated by gear meshing and bearing operation in the oil, preventing it from entering the lubrication points with the circulating oil and causing secondary wear and blockage. It will not cause significant resistance to the oil flow and is also easy to clean and maintain regularly. Attached Figure Description

[0024] Figure 1 This is a first-view three-dimensional structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the second-view three-dimensional structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the gearbox housing of the present invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the spray assembly of the present invention;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of the regulating cylinder of the present invention;

[0029] Figure 6 This is a schematic diagram of the three-dimensional structure of the mounting cylinder of the present invention;

[0030] Figure 7 For the present invention Figure 6 Enlarged 3D structural diagram at point A in the middle;

[0031] Figure 8 This is a three-dimensional structural diagram of the rotating rod of the present invention;

[0032] Figure 9 This is a schematic diagram of the deflection blade opening direction structure of the present invention;

[0033] Figure 10 This is a schematic diagram of the three-dimensional structure of the collection tube of the present invention;

[0034] Figure 11 This is a partial cross-sectional three-dimensional structural diagram of the collecting cylinder of the present invention;

[0035] Figure 12 This is a schematic diagram of the oil state inside the collection cylinder of the present invention.

[0036] In the diagram: 1. Gearbox housing; 2. Support base; 3. Input shaft; 4. Reduction gear; 5. Output shaft; 6. Connecting pipe; 7. Oil suction pump; 8. Electromagnet; 9. Mounting cylinder; 10. Mounting base; 11. Moving groove; 12. Moving plate; 13. Contact plate; 14. Guide groove; 15. Rotating rod; 16. Deflecting vane; 17. Limiting rod; 18. Adjusting cylinder; 19. Internal thread; 20. Collection cylinder; 21. Support frame; 22. Rotating shaft; 23. Drive vane; 24. Collection plate; 25. Guide groove; 26. Defoaming plate; 27. Contact groove; 28. Extension plate; 29. ​​Inclined plate; 30. Observation window. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a high-efficiency reducer for a single-screw extruder.

[0039] In one typical implementation of this application, such as Figures 1-12As shown, a high-efficiency reducer for a single-screw extruder includes a gearbox housing 1, a support base 2 at the bottom of the gearbox housing 1, an input shaft 3 passing through the gearbox housing 1, multiple sets of reduction gears 4 rotatably mounted on the inner wall of the gearbox housing 1, the input shaft 3 meshing with one of the reduction gears 4, an output shaft 5 passing through the gearbox housing 1, the output shaft 5 being coaxially mounted with one of the reduction gears 4, and a... An observation window 30 is provided, which can be used to observe the interior of the gearbox housing 1. A mounting cylinder 9 is installed through the inner wall of one side of the gearbox housing 1. One end of the mounting cylinder 9 is connected to a connecting pipe 6, and one end of the connecting pipe 6 is equipped with an oil suction pump 7. A spraying assembly is provided on one side of the gearbox housing 1. A defoaming assembly is installed through the bottom of the gearbox housing 1 and is located between the support seats 2. The spraying assembly is used to spray oil onto the meshing tooth roots of the input shaft 3 and the reduction gear 4. The defoaming assembly is used to eliminate air bubbles generated when the oil in the gearbox housing 1 is circulated.

[0040] The input shaft 3 drives the reduction gear 4 to rotate under external power. The reduction gear 4 meshes with the output shaft 5 to transmit power, thereby reducing the speed and outputting the required torque. During the operation of the gearbox housing 1, the spraying component can perform targeted spraying lubrication on the tooth root position of the meshing side of the input shaft 3 and the reduction gear 4, so that the tooth surface is fully covered with oil film during high-speed meshing. The circulating oil in the gearbox housing 1 is easily entangled with air under the high-speed agitation of the input shaft 3, forming a large number of microbubbles. If the bubbles enter the tooth meshing area with the oil flow, it will cause the lubricating oil film to break and the lubrication performance to decrease. The defoaming component defoams the oil to prevent air from entering. Bubble buildup affects lubrication. The observation window 30 allows for real-time monitoring of the internal operation and oil status of the gearbox housing 1, facilitating monitoring and maintenance. By installing a spray assembly on the gearbox housing 1, precise lubrication is achieved at the root of the meshing gear teeth of the input shaft 3 and the reduction gear 4, improving gear meshing efficiency and reducing wear. The defoaming assembly effectively reduces bubbles generated during oil circulation, ensuring the stability and cooling effect of the lubricating oil and extending the service life of gears and bearings. The observation window 30 provides a direct view of the internal operating status of the gearbox housing 1, facilitating timely maintenance and improving the overall reliability and efficiency of the reducer.

[0041] As a preferred embodiment of this example, please refer to the appendix. Figures 1-9The injection assembly includes a mounting cylinder 9 that penetrates the inner wall of one side of the gearbox housing 1. Multiple mounting seats 10 are mounted on the mounting cylinder 9, and each mounting seat 10 has a moving groove 11. A moving plate 12 is mounted on the outer side of the mounting cylinder 9, and multiple contact plates 13 are mounted on the moving plate 12. The contact plates 13 are slidably mounted within the moving groove 11. A guide groove 14 is provided on the moving plate 12, and the guide groove 14 has a curved arc structure. Multiple rotating rods 15 are rotatably mounted on the mounting cylinder 9, and deflecting vanes 16 are provided on one side of each rotating rod 15. Adjacent deflecting vanes 16 are in contact with each other, and one end of each deflecting vane 16 is... A concentrator plate is provided, which is semi-circular in shape; a limit rod 17 is provided at the top of the rotating rod 15, and one end of the limit rod 17 extends into the guide groove 14; one side of the moving plate 12 is made of cast iron, and an electromagnet 8 is provided on one side of the inner wall of the gearbox housing 1. The electromagnet 8 is coaxially arranged with the mounting cylinder 9. The electromagnet 8 is located on one side of the moving plate 12, and one end of the electromagnet 8 is provided with a control source. A temperature sensor and a speed sensor are provided inside the gearbox housing 1; one end of the mounting cylinder 9 is connected to a connecting pipe 6, and one end of the connecting pipe 6 is provided with an oil suction pump 7. One end of the oil suction pump 7 is connected to the collecting cylinder 20.

[0042] An arc-shaped guide groove 14 is provided on the movable plate 12. The tops of multiple sets of rotating rods 15 are inserted into the guide groove 14 through limiting rods 17. An electromagnet 8 is installed on the inner wall of the gearbox housing 1. The electromagnet 8 is coaxially arranged with the movable plate 12. When energized, it attracts or releases the movable plate 12 through magnetic force. As the movable plate 12 moves, the limiting rod 17 moves along the guide groove 14 and drives the rotating rods 15 to rotate. A deflecting vane 16 is provided on one side of the rotating rod 15. Adjacent deflecting vanes 16 support and link each other. The end concentrator plate converges and guides the deflected oil flow, realizing the adjustment of the injection direction. At the same time, the temperature sensor and speed sensor can monitor the working status of the gear pair in real time and transmit the signal to the control source to drive the electromagnet 8 and the oil suction pump 7 to work together. The oil suction pump 7 is connected to the collection cylinder 20 through the connecting pipe 6. After drawing oil, it is accurately sprayed into the gear meshing area through the nozzle, thereby realizing dynamic lubrication and cooling based on working condition feedback. The injection assembly can... The system allows for flexible adjustment of the injection direction and flow rate under different operating conditions, ensuring that the input shaft 3 and the gear reduction gear 4 always receive sufficient lubrication at the meshing tooth root, thus preventing tooth surface wear and overheating failure caused by oil film rupture. The moving plate 12, in conjunction with the arc-shaped guide groove 14 and the rotating rod 15, enables precise adjustment of the injection angle, making the oil injection more targeted and stable. The combination of the electromagnet 8 and the control source extends the injection control from mechanical adjustment to electromagnetic intelligent control, improving response speed and automation level. At the same time, the introduction of temperature and speed sensors enables the injection action to form a closed-loop feedback control with the actual operating state of the gear set, thereby achieving dynamic adjustment of lubricating oil quantity and injection direction. This ensures sufficient lubrication and cooling under high loads while avoiding excessive injection under low loads, improving the utilization efficiency of lubricating oil, enhancing the lubrication reliability and lifespan of the gear set, reducing oil waste and excessive injection, and improving the energy efficiency and operational stability of the reducer.

[0043] Furthermore, in the above scheme, the movable plate 12 may also be provided with an adjusting cylinder 18. The adjusting cylinder 18 is hollow, and an internal thread 19 is provided on the inner wall of the adjusting cylinder 18. A threaded rod that meshes with the internal thread 19 passes through the inner wall of the gearbox housing 1.

[0044] Based on the aforementioned spray assembly, an adjusting cylinder 18 is further provided. The adjusting cylinder 18 has a hollow structure with internal threads 19 machined on its inner wall. A threaded rod that meshes with the adjusting cylinder 1 is arranged through the inner wall of the gearbox housing 1. In use, the threaded rod rotates manually or driven by a motor, driving the adjusting cylinder 18 to move precisely along the axial direction through the transmission relationship of the threaded pair. The adjusting cylinder 18 is fixedly connected to the moving plate 12, thereby directly driving the moving plate 12 to achieve position adjustment. When the moving plate 12 is displaced axially under the action of the adjusting cylinder 18, the position of the corresponding contact plate 13 and the deflection angle of the rotating rod 15 also change accordingly, thereby precisely changing the spray position. The spray direction and position of the nozzle in the spray assembly ensure that the lubricating oil is delivered to the target tooth surface area at a fixed point. By adding an adjusting cylinder 18 and a threaded rod that cooperates with it to the moving plate 12, this application can realize the fine adjustment of the spray assembly in the axial direction, making the control of the spray angle and spray position more flexible. This structure has the advantages of mechanical locking and continuous adjustment, and can quickly switch the spray parameters under different working conditions. It avoids the jitter and deviation in the spray direction adjustment, improves the spray stability and oil utilization rate, and thus further improves the lubrication reliability and service life of the reducer gear pair under high load and high speed conditions.

[0045] As a preferred embodiment of this example, please refer to the appendix. Figure 3 , Figures 10-12 The defoaming assembly includes a collection cylinder 20 that passes through the bottom of the gearbox housing 1. One end of the oil suction pump 7 is connected to the collection cylinder 20. A set of defoaming plates 26 are provided on the inner wall of the collection cylinder 20. The defoaming plates 26 are wavy. Multiple contact grooves 27 are provided on one side surface of the defoaming plates 26. Extension plates 28 are provided at both ends of the defoaming plates 26. The extension plates 28 are curved. A support frame 21 is provided on the inner wall of the collection cylinder 20. A rotating shaft 22 is rotatably mounted on the support frame 21. Multiple drive blades 23 are provided at the bottom of the rotating shaft 22. Multiple collection plates 24 are provided at the top of the rotating shaft 22. The collection plates 24 are curved. A guide groove 25 is provided on one side surface of the collection plate 24. The thickness of one end of the collection plate 24 gradually increases. One side of the bottom of the collection plate 24 contacts the bottom of the gearbox housing 1. An inclined plate 29 is provided at the bottom of the gearbox housing 1. The height of the inclined plate 29 gradually decreases towards the collection cylinder 20.

[0046] When the oil pump 7 starts pumping oil, suction is generated at the bottom of the collection cylinder 20, causing the oil inside the collection cylinder 20 to flow. The flowing oil drives the drive blade 23 at the bottom of the rotating shaft 22 to rotate, causing the rotating shaft 22 to rotate synchronously, which in turn drives the collection plate 24 at the top to work. During the rotation, the collection plate 24 contacts the bottom of the gearbox housing 1, continuously guiding and collecting the dispersed oil into the collection cylinder 20. The collection plate 24 is arranged in a curved shape and has guide grooves 25 on its surface, and gradually thickens at one end. During the rotation, it can generate diversion and acceleration effects, allowing the oil to enter the collection cylinder 20 faster and more concentratedly. At the same time, the corrugated defoaming plate 26 and its surface contact grooves 27 provided on the inner wall of the collection cylinder 20 can disturb and shear the flowing oil, accelerating the aggregation and collapse of bubbles. Combined with the curved extension plates 28 at both ends and the inclined bottom, The guiding function of plate 29 ensures the stability of oil flow during collection and reflux, improving the overall defoaming effect; it achieves active collection and guidance of oil, preventing air bubbles from accumulating at the bottom of the tank; the combination of the curved structure of collection plate 24 and guide groove 25 creates a stable flow channel for oil when entering collection cylinder 20, accelerating the entry speed and reducing turbulence, thus improving oil aggregation and degassing efficiency; the wavy defoaming plate 26 and contact groove 27 further increase the shear and contact area between oil and air bubbles, making air bubbles easier to break; the extension plate 28 provides smooth guidance during fluid reflux, preventing secondary agitation; this solution can significantly reduce the gas content of oil, ensure the continuity and load-bearing capacity of the lubricating oil film, thereby improving the lubrication and cooling effect of the reducer gear set, extending the service life of transmission components, and improving the operational stability and reliability of the equipment.

[0047] As a preferred embodiment of this example, please refer to the appendix. Figure 1 A magnetic collector, specifically a magnet or magnetic rod assembly, is provided at the bottom of the collection cylinder 20 to collect friction debris in the oil inside the collection cylinder 20.

[0048] The magnetic collector is fixed to the bottom of the collection cylinder 20 by a magnet or magnetic rod assembly. When the lubricating oil flows through the collection cylinder 20 during circulation, the ferromagnetic wear debris entrained in it is attracted and fixed on the surface of the collector under the action of the magnetic field, thus preventing it from continuing to flow into the gear meshing area or the spray assembly with the oil. As the oil continues to circulate, the magnetic collector can continuously intercept and deposit ferromagnetic debris, thereby purifying the oil. It can effectively remove the ferromagnetic wear debris generated by gear meshing and bearing operation in the oil, preventing it from entering the lubrication points with the circulating oil and causing secondary wear and blockage. It does not cause significant resistance to the oil flow and is easy to clean and maintain regularly. It not only significantly improves the cleanliness and stability of the lubricating oil, but also extends the service life of gears and bearings, and improves the overall operational reliability and safety of the reducer.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high efficiency reducer for single screw extruder, comprising a reducer box body (1), characterized in that: The bottom of the reduction gearbox box body (1) is provided with a support seat (2), the reduction gearbox box body (1) is provided with an input shaft (3) penetrating through, a plurality of sets of reduction gears (4) are rotationally arranged on the inner wall of the reduction gearbox box body (1), the input shaft (3) is engaged with one of the reduction gears (4), the reduction gearbox box body (1) is provided with an output shaft (5) penetrating through, the output shaft (5) is coaxially arranged with one of the reduction gears (4), one side of the reduction gearbox box body (1) is provided with an observation window (30), the observation window (30) can be used for observing the inside of the reduction gearbox box body (1), a mounting cylinder (9) is penetratingly arranged on the inner wall of one side of the reduction gearbox box body (1), one end of the mounting cylinder (9) is connected with a connecting pipe (6), one end of the connecting pipe (6) is provided with an oil suction pump (7), one side of the reduction gearbox box body (1) is provided with a spraying assembly; a defoaming assembly is penetratingly arranged on the bottom of the reduction gearbox box body (1), and the defoaming assembly is located between the support seats (2); the spraying assembly is used for spraying oil on the meshing side of the input shaft (3) and the reduction gear (4); the spraying assembly comprises a plurality of mounting seats (10) arranged on the mounting cylinder (9), a moving groove (11) is formed in the mounting seat (10), a moving plate (12) is arranged on the outer side of the mounting cylinder (9), a plurality of contact plates (13) are arranged on the moving plate (12), the contact plate (13) is slidingly arranged in the moving groove (11), a guide groove (14) is formed in the moving plate (12), the guide groove (14) is a curved arc structure, a plurality of rotating rods (15) are rotationally arranged on the mounting cylinder (9), a deflection vane (16) is arranged on one side of the rotating rod (15), the adjacent deflection vanes (16) are in contact with each other, a limiting rod (17) is arranged on the top of the rotating rod (15), and one end of the limiting rod (17) extends into the guide groove (14); the defoaming assembly is used for eliminating the bubbles generated during the circulation of the oil in the reduction gearbox box body (1); the defoaming assembly comprises a collecting cylinder (20) penetrating through the bottom of the reduction gearbox box body (1), one end of the oil suction pump (7) is in communication with the collecting cylinder (20), a defoaming plate (26) is arranged on the inner wall of the collecting cylinder (20), the defoaming plate (26) is arranged in a wave shape, a plurality of contact grooves (27) are formed in one side surface of the defoaming plate (26), and extension plates (28) are arranged at both ends of the defoaming plate (26).

2. A high efficiency speed reducer for a single screw extruder as claimed in claim 1, characterized in that: One side of the moving plate (12) is made of cast iron, one side of the inner wall of the reduction gearbox box body (1) is provided with an electromagnet (8), the electromagnet (8) is coaxially arranged with the mounting cylinder (9), the electromagnet (8) is arranged on one side of the moving plate (12), one end of the electromagnet (8) is provided with a control source, and temperature sensors and speed sensors are arranged in the reduction gearbox box body (1).

3. A high efficiency speed reducer for a single screw extruder as claimed in claim 1, wherein: The mobile plate (12) is further provided with an adjusting cylinder (18), which is hollow, and the inner wall of the adjusting cylinder (18) is provided with an internal thread (19), and the inner wall of the speed reducer box body (1) is provided with a threaded rod which is engaged with the internal thread (19).

4. A high efficiency speed reducer for a single screw extruder as claimed in claim 2, wherein: One end of the deflection vane (16) is provided with a concentrating plate, which is semi-circular.

5. A high efficiency speed reducer for a single screw extruder as claimed in claim 1, wherein: The inner wall of the collecting cylinder (20) is provided with a supporting frame (21), the supporting frame (21) is rotatably provided with a rotating shaft (22), the bottom of the rotating shaft (22) is provided with a plurality of driving vanes (23), the top of the rotating shaft (22) is provided with a plurality of collecting plates (24), the collecting plates (24) are curved, the side surface of the collecting plates (24) is provided with a guide groove (25), the thickness of one end of the collecting plates (24) gradually increases, and the bottom side of the collecting plates (24) is in contact with the bottom of the speed reducer box body (1).

6. A high efficiency speed reducer for a single screw extruder as claimed in claim 5, wherein: The bottom of the collecting cylinder (20) is provided with a magnetic trap for collecting friction debris in the oil in the collecting cylinder (20).

7. A high efficiency speed reducer for a single screw extruder as claimed in claim 6, wherein: The bottom of the speed reducer box body (1) is provided with an inclined plate (29), and the height of the inclined plate (29) gradually decreases towards one side of the collecting cylinder (20). The mobile plate (12) is further provided with an adjusting cylinder (18), which is hollow, and the inner wall of the adjusting cylinder (18) is provided with an internal thread (19), and the inner wall of the speed reducer box body (1) is provided with a threaded rod which is engaged with the internal thread (19).

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