Spiral classifier drive device

Abstract

This application relates to the field of spiral classifier technology. Specifically, an embodiment discloses a transmission device for a spiral classifier, including: a frame, a reduction motor, a pinion, a large gear, and a bearing mechanism. The reduction motor is located at the upper end of the frame and includes a reducer and a motor. The output shaft of the motor is drively connected to the reducer, and the pinion is located at the end of the reducer's output shaft. The base of the bearing mechanism is connected to the upper end of the frame, and a bearing is installed within the bearing mechanism. A rotating shaft on one side of the large gear is connected to the bearing. The pinion meshes with the large gear. This addresses the problems of difficult gear replacement and stress on the transmission device in existing spiral classifier transmission devices.

Description

Technical Field

[0001] This application relates to the field of spiral classifier technology, and specifically to a spiral classifier transmission device. Background Technology

[0002] Currently, V-belt drives are commonly used in the transmission devices of spiral classifiers. The motor is connected to the input shaft of the reducer via a pulley, and the output shaft of the reducer is connected to a pinion. The meshing of the pinion and the large gear drives the spiral shaft to rotate. Traditional V-belt structures are prone to wear and breakage, and the pinion gear in the transmission device is mounted above the large gear (see...). Figure 3 Replacing the large gear is extremely inconvenient, requiring a large installation space and increasing the difficulty of maintenance and repair. The reducer is located directly above the screw shaft bearing mechanism, making it difficult to replace the bearings in the bearing mechanism due to limited space and operational challenges. Furthermore, the design position of the large and small gears in the transmission device is unreasonable, with the forces on the two gears being primarily horizontal. When the tank contains slurry and is started, the horizontal reaction force causes the reducer to shift horizontally, damaging the reducer base plate and ultimately leading to the shutdown of the entire equipment, resulting in significant losses. Summary of the Invention

[0003] The purpose of this application is to provide a transmission device for a spiral classifier, which solves the problems of difficult gear replacement and stress on the transmission device in the prior art spiral classifier.

[0004] To achieve the above objectives, this application provides a transmission device for a spiral classifier, comprising: a frame, a reduction motor, a pinion, a large gear, and a bearing mechanism, wherein...

[0005] The geared motor is mounted on the upper end of the frame. The geared motor includes a reducer and a motor. The output shaft of the motor is connected to the reducer in a transmission manner. The pinion is provided at the end of the output shaft of the reducer.

[0006] The base of the bearing mechanism is connected to the upper end of the frame, and a bearing is provided inside the bearing mechanism. The rotating shaft on one side of the large gear is connected to the bearing.

[0007] The small gear meshes with the large gear.

[0008] Optionally, it also includes:

[0009] The water tank has a spiral classifier transmission device located at one end. A spiral is provided in the water tank along its length. One end of the central shaft of the spiral is connected to the rotating shaft on the other side of the large gear.

[0010] Optionally, a transmission support is provided at one end of the water tank, and the transmission device of the spiral classifier is located at the upper end of the transmission support.

[0011] Optionally, the other end of the water tank is provided with a lower support and a lifting mechanism, the lower support being connected to the other end of the spiral central shaft and the lifting mechanism respectively.

[0012] Optionally, the other end of the water tank is also provided with an overflow trough filter, an adjustment plate, and a discharge valve.

[0013] Optionally, the lower end of the water tank is provided with multiple mounting supports.

[0014] Optionally, a pad is provided below the geared motor and bearing mechanism.

[0015] Optionally, the geared motor and bearing mechanism are bolted to the upper surface of the frame, and the two sides of the frame are connected to the bearing housing and gear cover by bolts and nuts.

[0016] The embodiments of this application have the following advantages:

[0017] This application replaces the original independent motor → small pulley → large pulley → ZQ independent reducer input end → ZQ independent reducer output end structure with an R-series geared motor directly connected to a pinion. This reduces the number of components such as the large pulley, small pulley, V-belt, and pulley cover, simplifying the transmission structure, reducing assembly difficulty, saving installation space, and lowering usage and maintenance costs. The R-series geared motor uses hardened helical gears, which generate less axial force during power transmission and have a more uniform axial force distribution than spur gears. This reduces the requirements for the equipment's support structure, helping to reduce equipment vibration and wear. During helical gear meshing, the tooth surface contact is gradual, making power transmission smoother, reducing impact and vibration, thereby reducing noise and improving the stability of equipment operation. The pinion's installation position has been changed from above the large gear to the side of the large gear, distributing the force in the X and Y directions, reducing the force on the gear in one direction, improving the stress distribution, reducing gear failures, and extending the service life of the transmission device. The transmission device has been moved from above the bearing mechanism to the side of the bearing mechanism, so that the replacement of bearings is not affected by the transmission mechanism, reducing the difficulty of replacing bearing spare parts and making maintenance more convenient. It also reduced the overall height of the transmission base, increasing the stability of the mechanism. Attached Figure Description

[0018] To more clearly illustrate the embodiments of this application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0019] Figure 1A schematic diagram of the structure of a spiral classifier transmission device provided for at least one embodiment of this application;

[0020] Figure 2 A schematic diagram of a spiral classifier equipped with a spiral classifier transmission device is provided for at least one embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the transmission device structure in the prior art;

[0022] Figure 4 This is a schematic diagram of the discharge valve structure of a spiral classifier equipped with a spiral classifier transmission device, provided for at least one embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Bearing housing; 2. Frame; 3. Gear motor; 4. Gear cover; 5. Pinion; 6. Spiral classifier transmission device; 7. Transmission support; 8. Spiral; 9. Water tank; 10. Mounting support; 11. Overflow trough filter screen; 12. Lower support; 13. Adjusting plate; 14. Lifting mechanism; 15. Discharge valve; 16. Large pulley; 17. Independent reducer; 18. Independent motor; 19. Small pulley; 20. Pulley cover; 21. Large gear; 22. Bearing mechanism; 23. Cover plate; 24. Valve body; 25. Slide rod; 26. Clamping plate; 27. Lead screw. Detailed Implementation

[0025] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0027] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0028] This application provides a transmission device for a spiral classifier, see reference. Figures 1 to 2 ,include:

[0029] Frame 2, geared motor 3, pinion 5, large gear 21, bearing mechanism 22, wherein,

[0030] The geared motor 3 is disposed at the upper end of the frame 2. The geared motor 3 includes a reducer and a motor. The output shaft of the motor is connected to the reducer in a transmission manner. The pinion 5 is disposed at the end of the output shaft of the reducer.

[0031] The base of the bearing mechanism 22 is connected to the upper end of the frame 2. The bearing mechanism 22 is equipped with a bearing, and the rotating shaft on one side of the large gear 21 is connected to the bearing.

[0032] The small gear 5 meshes with the large gear 21.

[0033] Specifically, the geared motor 3 is directly connected to the pinion 5. During operation, the pinion 5 meshes with the large gear 21 to drive the spiral 8 to rotate. The slurry to be classified is fed into the middle of the settling zone (about 1 / 3 of the length of the tank from the rear baffle), and the slurry is classified by its own weight. Due to the stirring of the spiral 8 blades, the ore particles are dispersed. The fine ore particles with slow settling speed are carried by the liquid flow over the overflow weir at the tail end and become overflow products; the coarse ore particles with fast settling speed sink to the bottom and are carried out of the settling zone by the spiral 8 blades along the inclined bottom surface. After a dewatering process, they are discharged from the head of the classifier as return sand. The return sand is discharged at a high position and has a high concentration, so it can be directly returned to the mill for re-grinding. A lifting mechanism 14 is provided at the tail end of the classifier. The 8th screw shaft is used to lift the screw shaft during emergency stops or maintenance to prevent the sediment from burying the screw blades and making restarting difficult. In addition, if the coarse sand sediment layer is too thick during operation, making it difficult for the screw shaft to rotate, it can also be slightly raised to prevent damage to the blades and other parts.

[0034] In some embodiments, it also includes:

[0035] The water tank 9 has a spiral classifier transmission device 6 located at one end. A spiral 8 is provided in the water tank 9 along its length. One end of the central shaft of the spiral 8 is connected to the rotating shaft on the other side of the large gear 21.

[0036] Specifically, the spiral 8 is an important working component in the spiral 8 classifier. The spiral 8 includes a central rotating shaft and blades mounted on it, and it has two rotation directions: left and right.

[0037] In some embodiments, a transmission support 7 is provided at one end of the water tank 9, and the spiral classifier transmission device 6 is disposed at the upper end of the transmission support 7.

[0038] In some embodiments, the other end of the water tank 9 is provided with a lower support 12 and a lifting mechanism 14, and the lower support 12 is connected to the other end of the central rotating shaft of the spiral 8 and the lifting mechanism 14 respectively.

[0039] Specifically, the lower support 12 is directly connected to the central rotating shaft of the spiral 8 and the lifting mechanism 14, serving as the force-bearing fulcrum at the other end of the spiral 8. When the lifting mechanism 14 is in operation, it lifts the lower support 12 to raise the entire spiral 8. The adjustment plate 13 is used to adjust the grading area, thereby regulating overflow accuracy, throughput, etc.

[0040] In some embodiments, the other end of the water tank 9 is also provided with an overflow tank filter 11, an adjustment plate 13 and a discharge valve 15.

[0041] Specifically, the overflow trough filter screen 11 is made of 5x5 woven mesh and is placed at the bottom of the overflow trough to separate impurities and increase the resistance to material flow.

[0042] Adjustment plate 13 is made of pine wood and is placed inside the bent plate at the front end of the overflow trough. Increasing or decreasing its number can adjust the overflow flow rate and overflow accuracy.

[0043] refer to Figure 4 The discharge valve 15 is composed of a cover plate 23, a valve body 24, a slide rod 25, a clamping plate 26, a screw rod 27, etc., and is welded to the rear baffle on the tank.

[0044] In some embodiments, the lower end of the water tank 9 is provided with a plurality of mounting supports 10.

[0045] In some embodiments, a pad is provided below the geared motor 3 and the bearing mechanism 22.

[0046] Specifically, a pad is installed below the geared motor 3 and the bearing mechanism 22 to adjust the horizontal height, ensuring that the bearing mechanism 22 and the geared motor 3 are installed on the same plane, thereby improving the stress condition of the transmission device.

[0047] In some embodiments, the geared motor 3 and the bearing mechanism 22 are bolted to the upper surface of the frame 2, and the two sides of the frame 2 are connected to the bearing seat 1 and the gear cover 4 by bolts and nuts.

[0048] Specifically, the working principle of the spiral classifier 8 is as follows: the finely ground slurry is fed into the water tank 9 through the feed inlet located in the middle of the settling zone (about 1 / 3 of the tank length from the rear baffle). The lower end of the inclined water tank 9 is the slurry classification and settling zone. The spiral 8 rotates at low speed, stirring the slurry so that most of the light and fine particles are suspended on the surface and overflow at the overflow edge, entering the next process; the coarse and heavy particles settle at the bottom of the tank and are conveyed by the spiral 8 to the discharge port as return sand and discharged. Due to the continuous feeding of slurry, the overflow and return sand are also continuously discharged separately. If the classifier and the grinding mill are in a closed loop, the coarse material enters the mill for further grinding via the feed chute.

[0049] This application directly connects the geared motor 3 to the pinion 5, replacing the original independent motor 18 → small pulley 19 → large pulley 16 → ZQ independent reducer 17 input end → ZQ independent reducer 17 output end structure with the R-series geared motor 3. This reduces the number of components such as the large pulley 16, small pulley 19, V-belt, and pulley cover 20, simplifying the transmission structure, reducing assembly difficulty, saving installation space, and lowering usage and maintenance costs. The R-series geared motor 3 uses hardened helical gears, which generate less axial force during power transmission and have a more uniform axial force distribution than spur gears. This results in relatively lower requirements for the equipment's support structure, which is beneficial for power reduction. To reduce equipment vibration and wear, the contact between the tooth surfaces during helical gear meshing is gradual, resulting in smoother power transmission, reduced impact and vibration, lower noise, and improved equipment operational stability. The pinion 5's installation position has been moved from above the large gear 21 to its side, distributing the force across the X and Y directions, reducing unidirectional force on the gear, improving stress distribution, reducing gear failures, and extending the service life of the transmission device. The transmission mechanism has also been moved from above the bearing mechanism 22 to its side, eliminating the impact of the transmission mechanism when replacing bearings in the bearing mechanism 22, reducing the difficulty of replacing spare parts in the bearing mechanism 22, and making maintenance more convenient. Simultaneously, the overall height of the transmission base has been reduced, increasing the stability of the mechanism.

[0050] The core design goal of the transmission device 6 of this spiral classifier is to simplify the transmission chain, optimize gear stress, improve operational smoothness, reduce maintenance difficulty, and enhance overall stability. Its working principle and structural characteristics can be elaborated as follows:

[0051] Power transmission path (core optimization): The geared motor 3 (integrating a motor and a hardened helical gear reducer) directly drives the pinion 5 through its output shaft. This is a fundamental simplification of the traditional complex transmission chain (motor → small pulley 19 → V-belt → large pulley 16 → independent reducer 17 → output shaft). The pinion 5 directly meshes with the large gear 21 fixed at one end of the central shaft of the spiral 8, transmitting power to the large gear 21. The large gear 21 drives the spiral 8 in the water tank 9 to rotate at a constant speed through its rotating shaft (rigidly connected to the central shaft of the spiral 8), thus achieving the slurry classification operation.

[0052] Key Structural Layout and Functions: The device adopts the R-series hardened helical gear reducer motor 3, whose core advantages lie in its integrated design (motor and reducer integrated, compact structure) and the characteristics of helical gears. During helical gear meshing, the tooth surface contact is asymptotic, resulting in smoother and more continuous power transmission compared to the instantaneous line contact of spur gears, significantly reducing impact, vibration, and operating noise. Simultaneously, the axial force generated is smaller and more evenly distributed, reducing the strength requirements of the supporting structure (bearings, frame 2), helping to reduce vibration and wear, improve bearing life, and achieve high transmission efficiency. The pinion 5 is positioned on the side of the large gear 21 (instead of directly above it as is common in traditional designs). This key layout change decomposes the gear meshing force into the X (axial) and Y (radial) directions in the horizontal plane, significantly reducing the concentrated load on the gear in a single direction (as in traditional top-bottom layouts where it mainly bears radial force), making the load distribution more even, reducing tooth root bending stress and tooth surface contact stress, effectively reducing the risk of pitting, tooth breakage, and other failures, and extending gear life. The bearing mechanism 22 supports the rotating shaft of the large gear 21 (i.e., the extension end of the central rotating shaft of the helical gear 8), bearing the radial force generated by the rotation of the helical gear 8 and part of the axial force (generated by the working of the helical gear and the helical gear 8). Its base is fixed to the upper end of the frame 2 to ensure stable support of the rotating shaft. The frame 2 serves as the basic support structure for the entire transmission device. An adjustable pad is installed below the geared motor 3 and the bearing mechanism 22. Its core function is to precisely adjust the horizontal height of the output shaft of the geared motor 3 and the rotating shaft of the bearing mechanism 22, ensuring that their center lines are strictly in the same horizontal plane. This is a key prerequisite for achieving precise meshing of the pinion 5 and the large gear 21 (correct center distance and meshing angle). Precise alignment can significantly reduce the additional bending moment and vibration caused by installation errors, making the gear meshing force and bearing load more in line with the design expectations and optimizing the stress condition of the transmission device. The geared motor 3 and the bearing mechanism 22 are firmly connected to the upper surface of the frame 2 by bolts. The two sides of the frame 2 are connected to the bearing seat 1 of the bearing mechanism 22 and (if present) the gear protective cover by bolts and nuts, enhancing the overall rigidity and stability.

[0053] Optimized Spatial Layout (Significant Advantage): The entire transmission system (gear motor 3, pinion 5, and gear 21) is arranged on the side of the bearing mechanism 22 (instead of directly above it in the traditional design). This layout change brings revolutionary advantages. When it is necessary to replace the bearings within the bearing mechanism 22, there is no need to disassemble the upper transmission components (such as the motor, gearbox, and gears). Maintenance personnel can operate directly from the side, greatly reducing the difficulty, time, and cost of bearing maintenance. At the same time, the bulky supports and space required for traditional upper transmission are removed, significantly reducing the overall height of the entire transmission base. The lowered center of gravity, combined with the more compact lateral layout, greatly improves the structural rigidity and anti-tipping stability of the entire transmission system and the spiral 8-stage classifier head, which is especially beneficial for the smooth operation of the equipment under load.

[0054] Overall Technical Results Summary: This design achieves structural simplification (eliminating the need for a mounting base for pulleys, V-belts, belt covers, and an independent reducer 17, reducing the number of parts and simplifying assembly) and space saving (the integrated geared motor 3 and the side layout significantly reduce the space occupied by the transmission components). In terms of performance, the hardened helical gear transmission is smooth, low-noise, and highly efficient; the side meshing and precise leveling pads optimize the stress on the gears and bearings, reducing malfunctions. Maintenance costs are reduced (the simplified structure reduces maintenance points; the side layout facilitates maintenance of critical bearings; improved reliability reduces unexpected downtime). Stability is significantly enhanced (the lowered center of gravity and optimized layout improve equipment operational stability).

[0055] In summary, the spiral classifier transmission device 6, through the adoption of an integrated helical gear reducer motor 3 directly connected, an innovative gear side meshing layout, a precise height adjustment pad, and a revolutionary side-mounted transmission device design, has achieved a highly efficient, stable, reliable, easy-to-maintain, and compact and stable power transmission solution, effectively overcoming many drawbacks of traditional transmission methods.

[0056] Note that, unless otherwise explicitly stated, all features disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by alternative features for achieving the same, equivalent, or similar purpose. Therefore, unless explicitly stated otherwise, each disclosed feature is merely one example of a set of equivalent or similar features. Where used, "further," "preferably," "even further," and "more preferably" are simply starting points for describing another embodiment based on the foregoing embodiments, the combination of which with the foregoing embodiments constitutes the complete configuration of another embodiment. Any combination of several "further," "preferably," "even further," or "more preferably" settings following the same embodiment constitutes yet another embodiment.

[0057] In the implementation of functions and steps, the corresponding functions and steps in the various embodiments may occur in a different order than those shown. For example, two consecutive functions and steps may actually be executed or implemented substantially in parallel, and they may sometimes be executed or implemented in reverse order, depending on the functions involved.

[0058] Although this application has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this application fall within the scope of protection claimed in this application.

Claims

1. A screw classifier drive, characterized by, include: The machine frame, geared motor, pinion, gear, and bearing mechanism, among which... The geared motor is mounted on the upper end of the frame. The geared motor includes a reducer and a motor. The output shaft of the motor is connected to the reducer in a transmission manner. The pinion is provided at the end of the output shaft of the reducer. The base of the bearing mechanism is connected to the upper end of the frame, and a bearing is provided inside the bearing mechanism. The rotating shaft on one side of the large gear is connected to the bearing. The small gear meshes with the large gear.

2. The spiral classifier drive of claim 1, wherein, Also includes: The water tank has a spiral classifier transmission device located at one end. A spiral is provided in the water tank along its length. One end of the central shaft of the spiral is connected to the rotating shaft on the other side of the large gear.

3. The spiral classifier transmission device according to claim 2, characterized in that, One end of the water tank is provided with a transmission support, and the transmission device of the spiral classifier is located at the upper end of the transmission support.

4. The spiral classifier transmission device according to claim 2, characterized in that, The other end of the water tank is provided with a lower support and a lifting mechanism. The lower support is connected to the other end of the spiral central shaft and the lifting mechanism, respectively.

5. The spiral classifier transmission device according to claim 4, characterized in that, The other end of the water tank is also equipped with an overflow trough filter, an adjustment plate, and a ore discharge valve.

6. The spiral classifier transmission device according to claim 2, characterized in that, The lower end of the water tank is equipped with multiple mounting supports.

7. The spiral classifier transmission device according to claim 1, characterized in that, A pad is provided below the geared motor and bearing mechanism.

8. The spiral classifier transmission device according to claim 1, characterized in that, The geared motor and bearing mechanism are bolted to the upper surface of the frame, and the two sides of the frame are connected to the bearing housing and gear cover by bolts and nuts.

Images