A rod mill liner removal device

Abstract

This utility model discloses a rod mill liner removal device, belonging to the field of rod mill maintenance technology. It includes: a guide beam, which is installed inside the rod mill via a connecting assembly; the connecting assembly restricts the movement of the guide beam; a pulley block, which is slidably connected to the guide beam; and an electric hoist, connected to the pulley block for lifting the liner. The electric hoist and pulley block work together to lift, transport, and lower the liner, replacing the traditional manual handling method. This eliminates the need for manual lifting of the liner, significantly reducing labor intensity and manpower requirements, thus saving labor costs. Using an electric hoist to lift or lower the liner avoids potential safety hazards such as falls and collisions during manual handling, mechanically mitigating the safety risks of personnel operation and improving the safety of the liner removal and installation process.

Description

Technical Field

[0001] This utility model relates to the field of rod mill maintenance technology, specifically a rod mill liner removal device. Background Technology

[0002] In new coal chemical enterprises, the raw coal particles required to prepare gasifier slurry are less than 12mm in size. This requires a rod mill to crush the raw coal. During the crushing process, friction occurs between the rod mill liner, steel rod, and raw coal. After long-term use, the liner becomes thinner and needs to be removed and replaced regularly.

[0003] The rod mill liner is a casting measuring 4000mm*6000mm and weighing approximately 100kg. During the removal and replacement process, the old liner must be manually lifted out of the rod mill through the maintenance port. After removal, the new liner must be lifted from the outside of the rod mill through the maintenance port and installed inside. The manual handling of the rod mill liner inside the rod mill is labor-intensive, poses serious safety risks, wastes labor costs, makes it difficult to control the project schedule, and poses significant safety risks to personnel. Summary of the Invention

[0004] To address the problems of existing technologies, this utility model provides a rod mill liner removal device, comprising: A guide beam, which is installed inside the rod mill via a connecting assembly; The connecting component is used to restrict the movement of the guide beam; The pulley block is slidably connected to the guide rail beam; An electric hoist, connected to the pulley block, is used to lift the liner plate.

[0005] Furthermore, the connecting assembly includes: a hanger, a chain hoist, and a ring. One end of the guide rail beam is fixed to the rod mill by a bracket; Multiple chain hoists are provided, and one end of each chain hoist is connected to the middle and the other end of the guide beam at intervals. The other end of each chain hoist is connected to the rod mill. The ring is connected to the rod mill via the chain hoist; The guide beam is inserted into the ring, and the position of the ring is fixed by the chain hoist.

[0006] Furthermore, one end of each chain hoist is fixed to the bolt hole of the rod mill cylinder.

[0007] Furthermore, at least three chain hoists are connected to the ring and are arranged at a 120° angle.

[0008] Furthermore, the guide beam is made of I-beams, and both ends of the guide beam are designed to be sealed.

[0009] Furthermore, the guide beam can slide freely radially within the ring.

[0010] Furthermore, a rope is fixed to the pulley block for pulling the pulley block in and out of the rod mill.

[0011] The beneficial effects of this utility model are: The lifting, transportation, and lowering of the lining plates are achieved through the coordinated use of an electric hoist and pulley system, replacing the traditional manual handling method. This eliminates the need for manual lifting of the lining plates, significantly reducing labor intensity and manpower requirements, thus saving on labor costs. Using an electric hoist to lift or lower the lining plates avoids the safety hazards of falls and collisions that may occur during manual handling, mechanically mitigating the safety risks of personnel operation and improving the safety of the lining plate removal and installation process. Attached Figure Description

[0012] Figure 1 A schematic diagram of the overall structure of the rod mill liner removal device provided by this utility model; Figure 2 A schematic diagram of the connection structure of the electric hoist provided by this utility model.

[0013] Figure label: In the diagram: 1 is the guide beam, 2 is the hanger, 3 is the limit pin, 4 is the chain hoist, 5 is the liner, 6 is the ring, 7 is the pulley block, 8 is the electric hoist, and 9 is the rod mill. Detailed Implementation

[0014] 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.

[0015] Please see Figure 1-2 This utility model provides a rod mill liner removal device, comprising: Guide rail beam 1, which is installed inside the rod mill 9 via a connecting assembly; The connecting component is used to restrict the movement of the guide beam 1; The connecting assembly includes: a hanger 2, a chain hoist 4, and a ring 6; The hanger 2 is fixed to the outer wall of the rod mill 9 by the limiting pin 3, so that the guide beam 11 cannot move; One end of the guide rail beam 1 is fixed to the rod mill 9 by a hanger 2; Multiple chain hoists 4 are provided, and one end of each chain hoist 4 is connected to the middle and the other end of the guide beam 1 at intervals. The other end of each chain hoist 4 is connected to the rod mill 9. The circular ring 6 is connected to the rod mill 9 via the chain hoist 4; The guide beam 1 is inserted into the ring 6, and the position of the ring 6 is fixed by the chain hoist 4.

[0016] One end of each chain hoist 4 is fixed to the bolt hole of the cylinder of the rod mill 9.

[0017] At least three chain hoists 4 are connected to the ring 6 and are arranged at a 120° angle.

[0018] The guide beam 1 can slide freely radially within the ring.

[0019] Pulley block 7, which is slidably connected to guide rail beam 1; The pulley block 7 is fixed with a rope for pulling the pulley block 7 in and out of the rod mill 9.

[0020] An electric hoist 8 is connected to the pulley block 7 and is used to lift the liner plate 5.

[0021] The guide beam is made of 10# I-beam steel, with both ends sealed by steel plates to prevent the mating parts from slipping out. The guide beam restricts its movement through the coordinated action of multiple components. The pulley block is slidably connected to the guide beam and can move freely along the length of the guide beam. The electric hoist is fixedly connected to the pulley block and is used to lift the liner plate, realizing the lifting and lowering operation of the liner plate and replacing manual lifting.

[0022] One end of the guide rail beam is fixedly connected to the rod mill via a hanger. The hanger is fixed to the outer wall of the rod mill by a limiting pin to restrict the sliding of the hanger itself. Multiple chain hoists (at least four) are installed, with one end fixedly connected to the middle and the other end of the guide rail beam at intervals. The other end of each chain hoist is fixedly connected to the cylinder of the rod mill, and the guide rail beam is fixed by multi-directional tension. The ring is made of 10-inch old elliptical pads or steel plates and is connected to the inner cylinder of the rod mill via the chain hoist. The guide rail beam is inserted into the ring, and the position of the ring is fixed by the chain hoist, so that the ring and the guide rail beam form a mating relationship.

[0023] One end of the chain hoist is fixed to the bolt hole of the rod mill cylinder. The fixing point uses the replaced liner fixing bolts, which eliminates the need to open additional fixing holes. This saves processing costs and utilizes the original structure of the cylinder to ensure fixing strength, allowing the chain hoist to provide stable tension to fix the guide beam and related components.

[0024] There are at least three chain hoists connected by rings, distributed at a 120° angle within a circle and fixed at the bolt holes of the inner cylinder of the rod mill; the symmetrical distribution at a 120° angle can make the rings subject to uniform tension, ensuring the stability of the fit between the rings and the guide beam, and avoiding the guide beam from shaking due to uneven force.

[0025] The ring is made of 10-inch old oval pads or steel plates. Its inner diameter is matched with the outer diameter of the guide beam. After being fixed to the inner cylinder of the rod mill by a chain hoist, the guide beam can slide flexibly in the ring along its own radial direction to meet the lifting requirements of the liner at different positions and improve the flexibility of the device operation.

[0026] The pulley block is fixed with two ropes for pulling the pulley block in and out of the rod mill. During the liner removal process, the pulley block carrying the electric hoist and liner can be pulled out from inside the rod mill to the outside of the maintenance port by pulling the ropes. During the liner installation process, the pulley block carrying the electric hoist and new liner can be pulled from outside the rod mill into the inside by pulling the ropes, realizing efficient transportation of the liner inside and outside the rod mill and eliminating the need for manual handling.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rod mill liner removal device, characterized in that, include: A guide beam, which is installed inside the rod mill via a connecting assembly; The connecting component is used to restrict the movement of the guide beam; The pulley block is slidably connected to the guide rail beam; An electric hoist, connected to the pulley block, is used to lift the liner plate.

2. The rod mill liner removal device according to claim 1, characterized in that, The connecting components include: a hanger, a chain hoist, and a ring. One end of the guide rail beam is fixed to the rod mill by a hanger; Multiple chain hoists are provided, and one end of each chain hoist is connected to the middle and the other end of the guide beam at intervals. The other end of each chain hoist is connected to the rod mill. The ring is connected to the rod mill via the chain hoist; The guide beam is inserted into the ring, and the position of the ring is fixed by the chain hoist.

3. The rod mill liner removal device according to claim 2, characterized in that, One end of each chain hoist is fixed to the bolt hole of the rod mill cylinder.

4. The rod mill liner removal device according to claim 2, characterized in that, There are at least three chain hoists connected to the ring, forming a 120° angle.

5. The rod mill liner removal device according to claim 1, characterized in that, The guide beam is made of I-beams, and both ends of the guide beam are designed to be sealed.

6. The rod mill liner removal device according to claim 1, characterized in that, The guide beam can slide freely radially within the ring.

7. The rod mill liner removal device according to claim 1, characterized in that, The pulley block is fixed with a rope for pulling the pulley block in and out of the rod mill.

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