Coal mill roller sleeve device

Abstract

The utility model relates to the technical field of coal mill equipment, in particular to a coal mill roller sleeve device. According to the technical scheme, the device comprises a bottom plate, a top seat, baffles and a groove, the top seat is fixed to the middle of the top surface of the bottom plate, a roller sleeve is placed in the middle of the interior of the top seat, a placing opening is formed in the top end of the interior of the top seat, sliding grooves are formed in the two sides of the interior of the placing opening, and the baffles slide in the sliding grooves; an air cylinder penetrates through the top end of the support. The roller sleeve is made of tungsten steel materials, the friction force of the surface structure of the roller sleeve is increased, the effective grinding area of the surface structure of the roller sleeve is increased, and therefore the grabbing force to raw coal is improved, and the grinding efficiency can be improved. A to-be-mounted roller sleeve is placed in the top plate and is preheated by hot air flowing in the top plate, so that the roller shaft is more easily pushed into the top plate by the top plate which descends and moves.

Description

Technical Field

[0001] The utility model relates to the technical field of coal grinding equipment, in particular to a coal grinding roller sleeve device. Background Art

[0002] Coal mill is a kind of equipment used for coal crushing and coal powder combustion preparation. It is mainly used to grind coal blocks or coal powder into fine coal powder and transport it to boilers or other thermal energy equipment through pipelines for combustion. Coal mills are usually composed of feeding devices, coal grinding devices, powder discharge devices, transmission devices, electrical control systems, etc. The basic principle of coal mill is to grind coal blocks or coal powder into the required fine granular coal powder through the friction and extrusion between the grinding roller and the grinding disc.

[0003] The roller sleeves on the surface of the grinding rollers currently in use are made of traditional composite cladding wear-resistant layer materials. After being used too many times, they will expand and contract due to heat and cold, causing deformation of the roller sleeve base, which brings difficulties to the actual installation and disassembly. After the roller sleeve is deformed, the grinding roller hub will also be deformed and damaged accordingly, and the life of the hub will be greatly reduced. In addition, the existing installation operation is mostly performed manually using tools such as hammers to install the roller shaft into the roller sleeve. This operation is time-consuming, labor-intensive and inconvenient for staff to operate. Utility Model Content

[0004] The utility model aims to provide a coal grinding roller sleeve device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal mill roller sleeve device, comprising a bottom plate, a top seat, a baffle and a groove, a top seat is fixed in the middle of the top surface of the bottom plate, a roller sleeve is placed in the middle of the interior of the top seat, a placement opening is opened at the top end of the top seat, sliding grooves are opened on both sides of the placement opening, a baffle slides inside the sliding groove, a bracket is fixed at the rear end of the top surface of the bottom plate, and a cylinder is installed through the top of the bracket.

[0006] When using a coal mill roller sleeve device in the present technical solution, the staff must first connect the power supply to the utility model, control the operation of the utility model through the control panel, the staff pinches the push block and applies force to push the baffle, pushes the baffle away from the inside of the placement port, and the placement port begins to open after the baffle is pushed away. The staff places the roller sleeve to be installed in the middle of the inside of the top seat through the placement port. After placement, the staff pulls the baffle to cover the placement port. After the placement port is completely covered, the staff starts the fan and the heating net, and the heating net is powered on and starts to heat, and the fan starts to rotate and draws external air into the inside of the top seat. The gas entering the top seat will first pass through the inside of the heating net, and be heated into hot gas by the heating net and blown to the surface of the roller sleeve to perform heat treatment on it. After the heat treatment, the staff turns off the fan and the heating net , pull the baffle open again. After the baffle is opened, the staff will lift the roller to be installed with the roller sleeve and put it on the two support blocks. After putting it on, start the slide rail. The slide rail moves the two support blocks in the opposite direction and supports and fixes the roller from the inside. After the roller is fixed, the staff controls the cylinder to push the top plate connected to the output end. The top plate descends with the roller fixed on the bottom surface and enters the inside of the top seat through the placement port. Continue to move the roller and it will be pressed into the inside of the roller sleeve. After pressing, the staff controls the slide rail to move the support blocks in the opposite direction, so that the support blocks will release the support and fixation of the roller. After releasing, control the cylinder to lift the top plate. After the top plate is lifted, the staff starts the fan again but does not start the heating net. The fan starts to blow flowing air into the inside of the top seat to cool the roller sleeve that has just been preheated, so that it can be quickly connected with the roller.

[0007] Preferably, the output end of the cylinder is connected to a top plate, and a groove is provided in the middle of the bottom surface of the top plate. The groove allows the slide rail to be hidden inside and provides an installation position.

[0008] Preferably, a slide rail is fixed inside the groove, a support block is slidably mounted on the surface of the slide rail, and a roller is provided on the surface of the support block. Through the cooperation of the slide rail and the support block, rollers of different sizes can be supported and fixed from the inside, achieving the effect of adapting to rollers of different sizes for fixing.

[0009] Preferably, a push block is fixed to one end of the top surface of the baffle. By providing the push block, it is convenient for the staff to pull the baffle, thus achieving the effect of providing a force application point.

[0010] Preferably, a heating net is fixed to one end of the top seat. By providing the heating net, the gas sent into the top seat by the fan can be heated, achieving the effect of preheating the roller sleeve by heating the gas.

[0011] Preferably, a fan is fixed to one end of the outer portion of the top seat. By providing the fan, a flow air duct can be formed inside the top seat, thereby achieving the effect of blowing flowing gas into the top seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The roller sleeve of the utility model is made of tungsten steel material, which improves the friction force and effective grinding area of ​​the roller sleeve surface structure, thereby improving the grip of the raw coal and helping to improve the grinding efficiency. The utility model is provided with a top seat with a two-end through-structure design, in which the roller sleeve to be installed is placed and preheated by the hot air flowing inside, so that it is easier for the descending and moving top plate to push the roller shaft into it. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main appearance structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the top seat of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the placement port of the utility model;

[0017] Figure 4 It is a schematic diagram of the bottom structure of the top plate of the utility model.

[0018] In the figure: 1. bottom plate; 2. top seat; 3. placement opening; 4. baffle; 5. push block; 6. fan; 7. top plate; 8. bracket; 9. cylinder; 10. roller sleeve; 11. heating net; 12. slide groove; 13. roller shaft; 14. support block; 15. slide rail; 16. groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a coal mill roller sleeve device proposed by the utility model includes a bottom plate 1, a top seat 2, a baffle 4 and a groove 16, a top seat 2 is fixed in the middle of the top surface of the bottom plate 1, a roller sleeve 10 is placed in the middle of the inside of the top seat 2, a placement opening 3 is opened at the top end of the top seat 2, slide grooves 12 are opened on both sides of the inside of the placement opening 3, a baffle 4 slides inside the slide groove 12, a bracket 8 is fixed to the rear end of the top surface of the bottom plate 1, and a cylinder 9 is installed through the top of the bracket 8.

[0022] The staff needs to first connect the external power supply to the utility model and control the operation of the utility model through the control panel. The staff pinches the push block 5 and applies force to push the baffle 4, pushes the baffle 4 from the inside of the placement port 3, and the placement port 3 begins to open after the baffle 4 is pushed away. The staff places the roller sleeve 10 to be installed in the middle of the inside of the top seat 2 through the placement port 3. After placement, the staff pulls the baffle 4 to cover the placement port 3. After the placement port 3 is completely covered, the staff starts the fan 6 and the heating net 11, and the heating net 11 is powered on and starts heating, and the fan 6 starts to rotate and draws external air into the inside of the top seat 2. The gas entering the top seat 2 will first pass through the inside of the heating net 11, and be heated into hot gas by the heating net 11 and blown to the surface of the roller sleeve 10 to perform heat treatment on it. After the heat treatment, the staff turns off the fan 6 and the heating net 11, and pulls to open the baffle 4 again. The baffle 4 is opened and then works The staff lifts the roller 13 to be installed together with the roller sleeve 10 and puts it on the two support blocks 14. After putting it on, the slide rail 15 is started. The slide rail 15 moves the two support blocks 14 in reverse and supports and fixes the roller 13 from the inside. After the roller 13 is fixed, the staff controls the cylinder 9 to push the top plate 7 connected to the output end. The top plate 7 descends with the roller 13 fixed on the bottom surface and enters the inside of the top seat 2 through the placement port 3. If the roller 13 continues to move, it will be pressed into the inside of the roller sleeve 10. After being pressed, the staff controls the slide rail 15 to move the support block 14 in the opposite direction, so that the support block 14 will release the support and fixation of the roller 13. After being released, the cylinder 9 is controlled to lift the top plate 7. After the top plate 7 is lifted, the staff starts the fan 6 again without starting the heating net 11. The fan 6 starts to blow flowing air into the inside of the top seat 2 to cool the roller sleeve 10 that has just been preheated, so that it can be quickly connected with the roller 13.

[0023] Embodiment 2

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a coal mill roller sleeve device proposed by the utility model, compared with the first embodiment, this embodiment also includes: the output end of the cylinder 9 is connected to the top plate 7, a groove 16 is opened in the middle of the bottom surface of the top plate 7, a slide rail 15 is fixed inside the groove 16, a support block 14 is slidably installed on the surface of the slide rail 15, a roller shaft 13 is provided on the surface of the support block 14, a push block 5 is fixed to one end of the top surface of the baffle 4, a heating net 11 is fixed to the inner end of the top seat 2, and a fan 6 is fixed to the outer end of the top seat 2.

[0025] In this embodiment, Figure 4 As shown, the opening of the groove 16 allows the slide rail 15 to be hidden and installed therein, providing an installation position;

[0026] like Figure 4As shown, through the cooperation of the slide rail 15 and the support block 14, roller shafts 13 of different sizes can be supported and fixed from the inside thereof, achieving the effect of adapting roller shafts 13 of different sizes for fixing;

[0027] like Figure 1 , Figure 2 and Figure 3 As shown, by setting the push block 5, it is convenient for the staff to pull the baffle 4, achieving the effect of providing a force application point;

[0028] like Figure 2 As shown, by providing a heating net 11, the gas sent into the top seat 2 by the fan 6 can be heated, achieving the effect of preheating the roller sleeve 10 by heating the gas;

[0029] like Figure 1 and Figure 2 As shown, by providing a fan 6, a flow passage can be formed inside the top seat 2, thereby achieving the effect of blowing flowing gas into the top seat 2.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal grinding roller sleeve device, comprising a bottom plate (1), a top seat (2), a baffle (4) and a groove (16), characterized in that: A top seat (2) is fixed in the middle of the top surface of the bottom plate (1), a roller sleeve (10) is placed in the middle of the top seat (2), a placement opening (3) is opened at the top end of the top seat (2), sliding grooves (12) are opened on both sides of the placement opening (3), a baffle (4) slides inside the sliding groove (12), a bracket (8) is fixed at the rear end of the top surface of the bottom plate (1), and a cylinder (9) is installed through the top end of the bracket (8).

2. A coal mill roller sleeve device according to claim 1, characterized in that: The output end of the cylinder (9) is connected to a top plate (7), and a groove (16) is provided in the middle of the bottom surface of the top plate (7).

3. A coal mill roller sleeve device according to claim 1, characterized in that: A slide rail (15) is fixed inside the groove (16), a support block (14) is slidably mounted on the surface of the slide rail (15), and a roller shaft (13) is provided on the surface of the support block (14).

4. A coal mill roller sleeve device according to claim 1, characterized in that: A push block (5) is fixed to one end of the top surface of the baffle (4).

5. A coal mill roller sleeve device according to claim 1, characterized in that: A heating net (11) is fixed at one end inside the top seat (2).

6. A coal mill roller sleeve device according to claim 1, characterized in that: A fan (6) is fixed to one end of the exterior of the top seat (2).

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