Wet rod mill convenient to maintain

Abstract

The utility model relates to a wet-type rod mill convenient to maintain, which comprises a cylinder body, a plurality of rod mills, a plurality of rod mills and a plurality of rod mills, the feeding part is connected to the axial outer ends of the flanges at the two ends of the barrel through end face flanges, and a feeding liner tube is arranged on the feeding part; the feeding bearing seats are mounted on the feeding parts on the two sides and used for supporting rotation of the barrel and the feeding parts; the large gear is mounted at the axial inner end of the flange on one side of the barrel; the small gear device comprises a small gear meshed with the large gear; a motor shaft of the output motor is connected with the pinion device through a first coupler, and the output motor is used for driving the pinion to rotate to drive the bull gear and the barrel to rotate; and the slow transmission device is selectively connected with the pinion device through a claw clutch, and is used for replacing an output motor to drive the barrel body to rotate at a low speed during maintenance, rotating the lining plate which is positioned above and needs to be replaced to a proper position below and then stopping, so that the lining plate is convenient to replace, the steel bar is convenient to add, and compared with the prior art, the stopping time is shortened, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery and equipment technology, and in particular to a wet rod mill that is easy to maintain. Background Technology

[0002] Rod mills are commonly used grinding equipment in industries such as mining, metallurgy, building materials, and chemicals, primarily for crushing and grinding materials. Wet rod mills are a type of rod mill that works by using rotating steel rods inside the cylinder to impact and grind the material. An internal liner acts as a wear-resistant layer, bearing the direct impact between the steel rods and the material. Water is added as a medium to form a slurry for grinding, resulting in high grinding efficiency and uniform product particle size.

[0003] Currently, common wet rod mills mainly consist of a cylinder, inlet and outlet sections, bearing housings, and a transmission device. The cylinder is the main body of the rod mill, containing steel rods and liners. Rotation of the steel rods grinds the material. Chinese patent document CN112844647B discloses a high-capacity rod mill with a cylinder containing liners on its inner wall. The liners inside the cylinder have either inclined convex strips as guide convex strips or inclined grooves as guide grooves. The cylinder has multiple rings of discharge holes, each equipped with a discharge screen. This invention, by using inclined convex strips or grooves on the cylinder liner, guides the material towards the discharge end during rotation, accelerating the material movement speed. Adding a discharge hole between the traditional inlet and outlet, with a screen attached, ensures that the properly ground stone leaves the cylinder as early as possible, reducing over-grinding. Dry production avoids water treatment, thereby increasing the rod mill's throughput.

[0004] The liners and steel rods inside the aforementioned rod mill will wear down during use. Replacing the liners and adding steel rods requires stopping the machine. Because the rod mill is relatively large, after replacing the lower liner, the upper liner needs to be rotated downwards for replacement. However, the cylinder's rotation speed is not adjustable, and after starting the motor, it is often impossible to immediately adjust it to the appropriate position to replace the upper liner. Therefore, the rod mill experiences prolonged downtime and high maintenance costs when replacing liners and adding steel rods. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to provide a wet rod mill that is easy to maintain. A claw clutch connects the rod mill's transmission structure to a slow-drive device. During normal operation, the slow-drive device disengages from the transmission structure and does not participate in the movement. When maintenance is required, the slow-drive device reconnects to the transmission structure via the claw clutch, and a small motor on the slow-drive device drives the cylinder to rotate quickly to the appropriate position for liner replacement, reducing downtime and improving production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A wet rod mill that is easy to maintain, characterized in that it comprises:

[0008] The cylinder has flanges welded to both ends along its axial direction, multiple discharge ports are provided in the middle circumferential direction, multiple lining plates are fixed on its inner wall, and multiple steel bars are provided inside.

[0009] The feeding section is connected to the outer axial ends of the flanges at both ends of the cylinder via end face flanges, and a feeding liner is provided on it;

[0010] The feed bearing housing is installed on both sides of the feed section to support the rotation of the cylinder and the feed section;

[0011] The large gear is installed on the inner axial end of the flange on one side of the cylinder;

[0012] A pinion device, including a pinion that meshes with a large gear;

[0013] The output motor has its motor shaft connected to the pinion gear device via a first coupling, which is used to drive the pinion gear to rotate and drive the large gear and the cylinder to rotate.

[0014] The slow transmission device, selectively connected to a pinion gear via a claw clutch, is used to replace the output motor in driving the cylinder at low speed during maintenance.

[0015] Preferably, the pinion device further includes a first connecting shaft and two first support bearing seats mounted on the first connecting shaft, the pinion being mounted on the first connecting shaft and positioned between the two first support bearing seats; the motor shaft of the output motor is connected to the first connecting shaft via a first coupling.

[0016] Preferably, the slow transmission device includes a second connecting shaft, a claw clutch, a reducer, and a small motor. The claw clutch includes a connecting gear mounted on the end of the first connecting shaft and a claw gear mounted on the end of the second connecting shaft that can mesh with the connecting gear. The claw gear is provided with a shift fork for driving the claw gear to slide back and forth on the second connecting shaft, thereby enabling the claw gear to mesh or disengage with the connecting gear. The output shaft of the reducer is connected to the second connecting shaft via a second coupling, and the output shaft of the small motor is connected to the input shaft of the reducer.

[0017] Preferably, a second support bearing seat is installed on the second connecting shaft.

[0018] Preferably, the bearing installed in the second support bearing housing is a self-aligning roller bearing.

[0019] Preferably, the slow transmission device further includes a brake, and the output shaft of the small motor is connected to the input shaft of the reducer on the brake.

[0020] Preferably, the inner wall of the feed liner is provided with a water-blocking spiral strip to prevent water backflow.

[0021] Preferably, the side wall of the cylinder is provided with an inspection port, and the inspection port is provided with an inspection door.

[0022] This utility model, employing the above-mentioned technical solution, has the following beneficial effects: The output motor of the rod mill drives the pinion gear to rotate, which in turn drives the large gear and the cylinder to rotate. By selectively connecting the slow transmission device to the pinion gear on the rod mill, it can be either disengaged or engaged with the pinion gear. During normal operation of the rod mill, the slow transmission device is disengaged from the pinion gear and does not participate in the movement. When maintenance is required, the slow transmission device is connected to the pinion gear via a claw clutch, and the small motor on the slow transmission device drives the cylinder to move at a low speed. In this way, when replacing liners and adding steel bars, the slow transmission device can be used to slow down the cylinder, rotating the liner to be replaced from the upper position to a suitable lower position before stopping the machine, facilitating liner replacement and steel bar addition. Compared with the prior art, this reduces downtime and lowers maintenance costs. Furthermore, the use of a claw clutch to selectively connect the slow transmission device to the pinion gear makes operation simple, the structure compact, and improves the maintenance efficiency and service life of the rod mill. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a wet rod mill that is easy to maintain.

[0024] Figure 2 This is a schematic diagram showing the connection between the pinion and the slow-speed transmission device.

[0025] Figure 3 for Figure 2 A schematic diagram of the AA-direction cross-section structure.

[0026] Figure 4 This is a schematic diagram showing the fit between the pinion and the gear.

[0027] Figure 5 This is a three-dimensional structural diagram of the pinion device.

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the cylinder. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] like Figures 1-6The illustrated wet rod mill, which is easy to maintain, includes:

[0035] The cylinder 1 has flanges 2 welded to both ends of its axial direction, multiple discharge ports 3 are provided in the middle circumferential direction, multiple liner plates are fixed on its inner wall, multiple fixing holes 100 are provided on the surface of the cylinder for fixing the liner plates, and multiple steel bars are provided inside the cylinder.

[0036] The feed section 6 is connected to the outer axial ends of the flanges 2 at both ends of the cylinder 1 via the end face flange 4, and a feed liner 5 is provided on it;

[0037] The feed bearing seat 7 is installed on the feed sections 6 on both sides and is used to support the rotation of the cylinder 1 and the feed section 6;

[0038] The large gear 8 is installed on the inner axial end of the flange 2 on one side of the cylinder 1;

[0039] The pinion device includes a pinion 9 that meshes with the large gear 8;

[0040] The output motor 10 has its motor shaft 11 connected to the pinion gear device via the first coupling 12, which is used to drive the pinion gear 9 to rotate and drive the large gear 8 and the cylinder 1 to rotate.

[0041] The slow transmission device 13 is selectively connected to the pinion device via a claw clutch 14, and is used to replace the output motor 10 to drive the cylinder 1 to rotate at a low speed during maintenance.

[0042] In the above technical solution, the output motor of the rod mill drives the pinion gear to rotate, which in turn drives the large gear and the cylinder to rotate. A slow-drive device is selectively connected to the pinion gear on the rod mill. This selective connection allows for either disengagement or engagement with the pinion gear. During normal operation of the rod mill, the slow-drive device is disengaged from the pinion gear and does not participate in the movement. When maintenance is required, the slow-drive device connects to the pinion gear via a claw clutch, and a small motor on the slow-drive device drives the cylinder to move at a low speed. This allows the slow-drive device to decelerate the cylinder when replacing liners or adding steel bars, rotating the liner to be replaced from its upper position to a suitable lower position before stopping the machine. This facilitates liner replacement and steel bar addition, reducing downtime and maintenance costs compared to existing technologies.

[0043] Furthermore, the pinion device also includes a first connecting shaft 15 and two first support bearing seats 16 supported and mounted on the first connecting shaft 15. The pinion 9 is mounted on the first connecting shaft 15 and positioned between the two first support bearing seats 16. The motor shaft 11 of the output motor 10 is connected to the first connecting shaft 15 via a first coupling 12. In this technical solution, the first support bearing seats are used to support the pinion and the first connecting shaft, making the pinion more stable during rotation. The first coupling allows the output motor to directly drive the pinion to rotate and drive the large gear.

[0044] Furthermore, the slow transmission device 13 includes a second connecting shaft 17, a claw clutch 14, a reducer 18, and a small motor 19. The claw clutch 14 includes a connecting gear 20 mounted on the end of the first connecting shaft 15, and a claw gear 21 mounted on the end of the second connecting shaft 17 and capable of meshing with the connecting gear. The claw gear 21 is provided with a shift fork 22 for driving the claw gear 21 to slide back and forth on the second connecting shaft 17, thereby enabling the claw gear 21 to mesh or disengage with the connecting gear 20. The output shaft of the reducer 18 is connected to the second connecting shaft 17 through a second coupling 23, and the output shaft of the small motor 19 is connected to the input shaft of the reducer 18. In this technical solution, the driven part of the claw clutch, namely the connecting gear, is mounted on the first connecting shaft on the side of the pinion, and the driving part of the claw clutch, namely the claw gear, is mounted on the second connecting shaft. When the rod mill is in operation, the connecting gear and the claw gear are separated, and the output motor drives the pinion to drive the large gear and the cylinder to rotate. When the rod mill needs maintenance, the shift fork drives the claw gear to mesh with the connecting gear to connect the first connecting shaft and the second connecting shaft. The small motor drives the second connecting shaft to rotate at low speed through the reducer, thereby driving the first connecting shaft and the pinion to rotate, and then driving the large gear and the cylinder to rotate at low speed.

[0045] Furthermore, a second support bearing seat 24 is installed on the second connecting shaft 17. In this technical solution, the second support bearing seat is used to support the second connecting shaft.

[0046] Furthermore, the bearing disposed within the second support bearing housing 24 is a self-aligning roller bearing. In this technical solution, the self-aligning roller bearing can withstand the radial load from the claw clutch.

[0047] Furthermore, the slow transmission device 13 also includes a brake 25, and the output shaft of the small motor 19 and the input shaft of the reducer 18 are connected to the brake 25. In this technical solution, when the liner is being inspected or replaced, the slow transmission device does not rotate, and the brake locks the slow transmission device to prevent the cylinder from reversing.

[0048] Furthermore, the inner wall of the feed liner 5 is provided with a water-blocking spiral strip to prevent water backflow. In this technical solution, if material overflows from the feed inlet during feeding, wastewater will enter the support bearing of the cylinder, causing damage to the bearing. The water-blocking spiral strip can prevent water backflow and avoid it from flowing back into the support bearing.

[0049] Furthermore, an inspection port is provided on the side wall of the cylinder 1, and an inspection door 26 is provided on the inspection port. In this technical solution, the inspection door facilitates internal maintenance of the cylinder.

[0050] In this specific embodiment, addressing the issue of long downtime and high maintenance costs associated with replacing liners and adding steel rods in existing rod mills, the above solution incorporates a slow-drive device on the rod mill. During normal operation, the slow-drive device disengages from the pinion gear and does not participate in movement. When maintenance is required, the slow-drive device connects to the pinion gear via a claw clutch, and a small motor on the slow-drive device drives the cylinder at a low speed. This allows the slow-drive device to decelerate the cylinder during liner replacement and steel rod addition, rotating the liner to be replaced from its upper position to a suitable lower position before stopping the machine. This facilitates liner replacement and steel rod addition, reducing downtime and maintenance costs compared to existing technologies. Furthermore, the use of a claw clutch for selective connection between the slow-drive device and the pinion gear simplifies operation, improves the compact structure, and enhances the maintenance efficiency and service life of the rod mill.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A wet rod mill that is easy to maintain, characterized in that, include: The cylinder (1) has flanges (2) welded to both ends of its axial direction, and multiple discharge ports (3) are provided in the middle circumferential direction. Multiple lining plates are fixed on its inner wall, and multiple steel bars are provided inside. The feed section (6) is connected to the outer axial end of the flanges (2) at both ends of the cylinder (1) via the end face flange (4), and a feed liner (5) is provided on it. The feed bearing housing (7) is installed on the feed sections (6) on both sides and is used to support the rotation of the cylinder (1) and the feed section (6); The large gear (8) is installed on the inner axial end of the flange (2) on one side of the cylinder (1); The pinion device includes a pinion (9) that meshes with the large gear (8); The output motor (10) has its motor shaft (11) connected to the pinion device via the first coupling (12) to drive the pinion (9) to rotate and drive the large gear (8) and the cylinder (1) to rotate. The slow transmission device (13) is selectively connected to the pinion device via a claw clutch (14) and is used to replace the output motor (10) to drive the cylinder (1) to rotate at a low speed during maintenance.

2. The easy-to-maintain wet rod mill according to claim 1, characterized in that: The pinion device also includes a first connecting shaft (15) and two first support bearing seats (16) mounted on the first connecting shaft (15). The pinion (9) is mounted on the first connecting shaft (15) and located between the two first support bearing seats (16). The motor shaft (11) of the output motor (10) is connected to the first connecting shaft (15) through a first coupling (12).

3. The easy-to-maintain wet rod mill according to claim 2, characterized in that: The slow transmission device (13) includes a second connecting shaft (17), a claw clutch (14), a reducer (18), and a small motor (19). The claw clutch (14) includes a connecting gear (20) mounted on the end of the first connecting shaft (15) and a claw gear (21) mounted on the end of the second connecting shaft (17) and capable of meshing with the connecting gear. The claw gear (21) is provided with a shift fork (22) for driving the claw gear (21) to slide back and forth on the second connecting shaft (17), so that the claw gear (21) and the connecting gear (20) can mesh or separate. The output shaft of the reducer (18) is connected to the second connecting shaft (17) through a second coupling (23), and the output shaft of the small motor (19) is connected to the input shaft of the reducer (18).

4. A wet rod mill for easy maintenance according to claim 3, characterized in that: A second support bearing seat (24) is installed on the second connecting shaft (17).

5. A wet rod mill for easy maintenance according to claim 4, characterized in that: The bearing installed in the second support bearing housing (24) is a self-aligning roller bearing.

6. A wet rod mill for easy maintenance according to claim 3, characterized in that: The slow transmission device (13) also includes a brake (25), and the output shaft of the small motor (19) and the input shaft of the reducer (18) are connected to the brake (25).

7. A wet rod mill for easy maintenance according to claim 1, characterized in that: The inner wall of the feed liner (5) is provided with a water-blocking spiral strip to prevent water backflow.

8. A wet rod mill for easy maintenance according to claim 1, characterized in that: The cylinder (1) has an inspection port on its side wall, and an inspection door (26) is provided on the inspection port.

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