Overturning roller overhauling device of coal mill

Abstract

The utility model discloses a coal mill turning roller maintenance device, which belongs to the technical field of coal mills, and comprises a coal mill body, and a turning roller used for assisting coal milling is mounted in the coal mill body; the periphery of the coal mill body is provided with an access hole for overhauling and checking the turning roller, an inner cavity of the access hole is provided with an adaptive access door, and the side surface of the access door is fixedly connected with a sealing frame; the fixed assembly frames are arranged on the peripheries of the corresponding access doors and are detachably connected with the coal mill body through countersunk bolts; the movable assembly frame is rotationally connected with the fixed assembly frame through a hinge, the movable assembly frame is further fixedly connected with the fixed assembly frame through a plurality of fixing bolts, a dustproof box is fixedly connected to the side face of the movable assembly frame, a hydraulic rod is installed in the side face of the dustproof box in an embedded mode, and a movable part of the hydraulic rod is fixedly connected with the access door. According to the overturning roller overhauling device of the coal mill, the overhauling door is designed to be movable and rotatable, so that the burden of mounting and dismounting is reduced, and time and labor are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mills, in particular to a roll turning and repairing device for a coal mill. Background Art

[0002] During the dismantling and maintenance of the medium-speed coal mill, the rollers and other structures will be inspected. The coal mill maintenance door is fastened to the coal mill body with bolts. When inspecting, the entire maintenance door needs to be removed. However, there is no place to put the dismantled maintenance door, and the subsequent installation is also difficult, time-consuming and labor-intensive.

[0003] After searching, the Chinese patent document (authorization announcement number CN213914248U) discloses a medium-speed coal mill that is easy to maintain, including a coal mill body, maintenance doors on both sides of the coal mill body, a maintenance platform is arranged below the front side of the maintenance door of the coal mill body, an auxiliary door disassembly assembly is arranged between the coal mill body and the maintenance door, and the auxiliary door disassembly assembly is arranged between the upper side of the grinding roller shaft head of the coal mill body and the side flange of the door; the auxiliary door disassembly assembly includes a first support, a second support, and a jack installed between the first support and the second support, the first support is arranged on the upper side of the grinding roller shaft head, the second support is arranged on the side flange of the door, and the first support and the second support are arranged oppositely. The utility model has the following advantages: saving manpower, saving construction costs, ensuring personal safety, no high-altitude operations, no high-altitude falling accidents; firm and durable, reliable quality, simple operation, easy maintenance, saving time and effort. During maintenance, the entire maintenance door needs to be removed, but there is no place to put the dismantled maintenance door, and the subsequent installation is also difficult, time-consuming and laborious. Utility Model Content

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

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal mill roller overhaul device, comprising:

[0006] Coal mill body, inside of which rollers for assisting coal grinding are installed;

[0007] The outer periphery of the coal mill body is provided with an inspection port for inspecting and checking the rollers, the inner cavity of the inspection port is provided with an adapted inspection door, and a sealing frame is fixedly connected to the side of the inspection door;

[0008] A plurality of fixed assembly frames are arranged on the outer periphery of the corresponding inspection doors and are detachably connected to the coal mill body through countersunk bolts;

[0009] The movable assembly frame is rotatably connected to the fixed assembly frame by a hinge, and the movable assembly frame is also fixed to the fixed assembly frame by a plurality of fixing bolts. A dust box is fixedly connected to the side of the movable assembly frame, and a hydraulic rod is embedded in the side of the dust box. The moving part of the hydraulic rod is connected and fixed to the inspection door.

[0010] As a preferred embodiment, a plurality of dust-resistant fans are embedded in the side of the dust-proof box, a plurality of rectangular channels are opened on the outer periphery of the dust-proof box, and sealing plates for sealing both sides of the dust-resistant fans are arranged in the rectangular channels.

[0011] As a preferred embodiment, the shape of the sealing plate is set to be C-shaped, the side of the sealing plate is connected with an anti-slip block, the sealing plate is connected and fixed to the dustproof box by a lock, and the inner wall of the sealing plate is bonded with a rubber sealing gasket.

[0012] As a preferred embodiment, a movable rod is fixedly connected to the side of the inspection door, and a sleeve sleeved on the outer periphery of the movable rod is embedded in the side of the dustproof box.

[0013] As a preferred embodiment, a threaded channel is provided on the outer circumference of the sleeve, and a fixed threaded rod is threadedly connected to the threaded channel.

[0014] As a preferred embodiment, a circular passage for the fixed threaded rod to pass through is opened on the outer periphery of the movable rod. When the fixed threaded rod passes through the circular passage near the inspection door, it plays a role in stabilizing the inspection door, and the inspection door is located in the inspection opening.

[0015] As a preferred embodiment, the top of the dustproof box is connected to multiple fixing clips, and the multiple fixing clips jointly fix a multi-stage telescopic rod. The periphery of the moving part of the multi-stage telescopic rod is connected to a lighting lamp for maintenance lighting and a camera for maintenance recording.

[0016] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0017] The inspection door of the coal mill roller inspection device is in the inspection port when in use, ensuring the normal use of the whole. The sealing frame can block the inspection port to ensure the sealing effect. When inspection is required, the fixing of the fixed threaded rod is released, the hydraulic rod is controlled to make the inspection door detach from the inspection port, the fixing bolt is taken out, and then the fixed assembly frame is rotated so that the dust box and the inspection door are rotated to one side, and the previous operation is reversed so that the inspection door can return to the inspection port for sealing. The inspection door does not need to be disassembled and placed during the whole process, saving time and labor.

[0018] The coal mill roller maintenance device has a hydraulic rod that can ensure the stability of the maintenance door. The cooperation between the casing and the movable rod can comprehensively improve the stability of the maintenance door, move the blocking plate, release the blockage of the dust-resistant fan, turn on the dust-resistant fan to blow air into the dustproof box, and blow the air and coal dust near the maintenance port into the coal mill body, reducing the impact on subsequent maintenance.

[0019] The coal mill roll inspection device removes the multi-stage telescopic rod, extends the multi-stage telescopic rod, and inserts the camera and lighting into the coal mill body from the inspection port for lighting and recording, thereby improving the efficiency of inspection;

[0020] The coal mill roller maintenance device is designed with an inspection door that can be moved and rotated, which reduces the burden of installation and disassembly and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the utility model after removing the fixed assembly frame;

[0024] Figure 3 It is a structural schematic diagram of the fixed assembly frame and the dustproof box of the utility model;

[0025] Figure 4 For the utility model Figure 3 Schematic diagram of the structure after removing the blocking plate;

[0026] Figure 5 It is a structural schematic diagram of the hydraulic rod and the sleeve of the utility model;

[0027] Figure 6 This is a structural schematic diagram of a blocking plate of the utility model;

[0028] Figure 7 It is a structural schematic diagram of the multi-stage telescopic rod of the utility model.

[0029] Description of reference numerals:

[0030] In the figure: 1- coal mill body; 2- inspection port; 3- inspection door; 4- fixed assembly frame; 5- countersunk bolt; 6- movable assembly frame; 7- fixed bolt; 8- dustproof box; 9- hydraulic rod; 10- dust-resistant fan; 11- blocking plate; 12- anti-slip block; 13- movable rod; 14- casing; 15- fixed threaded rod; 16- fixed clamp; 17- multi-stage telescopic rod; 18- lighting lamp; 19- camera; 20- sealing plate. DETAILED DESCRIPTION

[0031] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0032] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0033] The connection method can be bonding, welding, bolt connection and other existing methods, depending on actual needs.

[0034] See also Figures 1 to 5 As shown, a coal mill roller overhaul device, this embodiment includes:

[0035] A coal mill body 1, wherein a roller for assisting coal grinding is installed inside the coal mill body 1;

[0036] The outer periphery of the coal mill body 1 is provided with an inspection port 2 for inspecting and checking the rollers, and the inner cavity of the inspection port 2 is provided with an adapted inspection door 3. The outer periphery of the inspection door 3 is bonded with a rubber sleeve. When in use, the inspection door 3 is in the inspection port 2 to ensure the normal use of the whole. The sealing frame 20 can block the inspection port 2 to ensure the sealing effect. The side of the inspection door 3 is fixedly connected with the sealing frame 20. The side of the sealing frame 20 is bonded with a sealing gasket to improve the sealing effect. The outer diameter of the sealing frame 20 is larger than the inner diameter of the inspection port 2, and the outer diameter of the sealing frame 20 is smaller than the inner diameter of the fixed assembly frame 4, the movable assembly frame 6 and the dust box 8;

[0037] A plurality of fixed assembly frames 4 are arranged on the outer periphery of the corresponding inspection doors 3 and are detachably connected to the coal mill body 1 through countersunk bolts 5;

[0038] The movable assembly frame 6 is rotatably connected to the fixed assembly frame 4 through a hinge, and the movable assembly frame 6 is also connected and fixed to the fixed assembly frame 4 through a plurality of fixing bolts 7. A dust box 8 is fixedly connected to the side of the movable assembly frame 6, and a hydraulic rod 9 is embedded in the side of the dust box 8. The movable part of the hydraulic rod 9 is connected and fixed to the inspection door 3. The hydraulic rod 9 is controlled to contract so that the inspection door 3 is separated from the inspection port 2, the fixing bolts 7 are taken out, and then the fixed assembly frame 4 is rotated to one side, so that the dust box 8 and the inspection door 3 are rotated to one side. Compared with removing the inspection door 3 and finding a place to place and subsequently install it, it saves time and effort.

[0039] A plurality of dust-resistant fans 10 are embedded in the side of the dust-proof box 8, and a plurality of rectangular channels are opened on the outer periphery of the dust-proof box 8. A sealing plate 11 for sealing the two sides of the dust-resistant fans 10 is arranged in the rectangular channel. The shape of the sealing plate 11 is set to be C-shaped, and an anti-slip block 12 is connected to the side of the sealing plate 11. The sealing plate 11 is connected and fixed to the dust-proof box 8 by a lock. The sealing plate 11 is moved to release the blockage of the dust-resistant fan 10, and the dust-resistant fan 10 is turned on to blow air into the dust-proof box 8, so as to blow the air and coal dust near the inspection port 2 into the coal mill body 1, thereby reducing the impact on subsequent maintenance. A rubber sealing gasket is bonded to the inner wall of the sealing plate 11.

[0040] A movable rod 13 is fixedly connected to the side of the inspection door 3, and a sleeve 14 is embedded in the side of the dust box 8 and is sleeved on the outer periphery of the movable rod 13. A threaded channel is provided on the outer periphery of the sleeve 14, and a fixed threaded rod 1 is threadedly connected to the threaded channel. A circular channel is provided on the outer periphery of the movable rod 13 for the fixed threaded rod 15 to pass through. When the fixed threaded rod 15 passes through the circular channel near the inspection door 3, it plays a role in stabilizing the inspection door 3. The inspection door 3 is in the inspection port 2. When maintenance is required, the fixed threaded rod 15 is released.

[0041] A plurality of fixing clips 16 are connected to the top of the dustproof box 8, and a multi-stage telescopic rod 17 is fixed to the plurality of fixing clips 16. A lighting lamp 18 for maintenance lighting and a camera 19 for maintenance recording are connected to the periphery of the moving part of the multi-stage telescopic rod 17. The multi-stage telescopic rod 17 is removed and extended, and the camera 19 and the lighting lamp 18 are inserted into the coal mill body 1 from the inspection port 2 for lighting and recording.

[0042] The coal mill body 1, hydraulic rod 9, dust-resistant fan 10, lighting lamp 18 and camera 19 are all conventional instruments. Their working principles, sizes and models are irrelevant to the problems solved by this application, so they will not be described in detail. Each structure has its own switch or remote control switch, and the provision of power is also common knowledge in the field. In addition, the utility model is mainly used to protect mechanical devices, so the utility model will no longer explain the control method and circuit connection in detail. The battery, switch or remote control switch are all installed on the side of the coal mill body 1.

[0043] How it works

[0044] The inspection door 3 of the coal mill roller inspection device is located in the inspection port 2 when in use, ensuring normal use of the whole, and the sealing frame 20 can block the inspection port 2 to ensure the sealing effect;

[0045] When maintenance is required, release the fixation of the fixed threaded rod 15, control the hydraulic rod 9 to retract the inspection door 3 from the inspection port 2, move the blocking plate 11, release the blockage of the dust-resistant fan 10, turn on the dust-resistant fan 10 to blow air into the dustproof box 8, and blow the air and coal dust near the inspection port 2 into the coal mill body 1 to reduce the impact on subsequent maintenance, remove the fixing bolt 7, and then rotate the fixed assembly frame 4 to one side so that the dustproof box 8 and the inspection door 3 are rotated to one side, remove the multi-stage telescopic rod 17, extend the multi-stage telescopic rod 17, and insert the camera 19 and the lighting lamp 18 from the inspection port 2 into the coal mill body 1 for lighting and recording.

[0046] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0047] Although the 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 mill roller maintenance device, characterized in that: include: A coal mill body (1), wherein a roller for assisting coal grinding is installed inside the coal mill body (1); The outer periphery of the coal mill body (1) is provided with an inspection port (2) for inspecting and checking the rollers, the inner cavity of the inspection port (2) is provided with an adapted inspection door (3), and a sealing frame (20) is fixedly connected to the side of the inspection door (3); A plurality of fixed assembly frames (4) are arranged on the outer periphery of the corresponding inspection door (3) and are detachably connected to the coal mill body (1) via countersunk bolts (5); The movable assembly frame (6) is rotatably connected to the fixed assembly frame (4) via a hinge, and the movable assembly frame (6) is also fixedly connected to the fixed assembly frame (4) via a plurality of fixing bolts (7). A dust box (8) is fixedly connected to the side of the movable assembly frame (6), and a hydraulic rod (9) is embedded in the side of the dust box (8). The movable part of the hydraulic rod (9) is fixedly connected to the inspection door (3).

2. A coal mill roller maintenance device according to claim 1, characterized in that: A plurality of dustproof fans (10) are embedded in the side of the dustproof box (8), a plurality of rectangular channels are opened on the outer periphery of the dustproof box (8), and sealing plates (11) are arranged in the rectangular channels for sealing the two sides of the dustproof fans (10).

3. A coal mill roller maintenance device according to claim 2, characterized in that: The shape of the blocking plate (11) is set to be C-shaped, the side of the blocking plate (11) is connected to an anti-slip block (12), the blocking plate (11) is connected and fixed to the dustproof box (8) through a lock buckle, and the inner wall of the blocking plate (11) is bonded with a rubber sealing gasket.

4. A coal mill roller maintenance device according to claim 1, characterized in that: A movable rod (13) is fixedly connected to the side of the inspection door (3), and a sleeve (14) sleeved on the outer periphery of the movable rod (13) is embedded in the side of the dustproof box (8).

5. A coal mill roller maintenance device according to claim 4, characterized in that: A threaded channel is formed on the outer periphery of the sleeve (14), and a fixed threaded rod (15) is threadedly connected to the threaded channel.

6. A coal mill roller maintenance device according to claim 5, characterized in that: The outer circumference of the movable rod (13) is provided with a circular passage for the fixed threaded rod (15) to pass through. When the fixed threaded rod (15) passes through the circular passage near the inspection door (3), it plays a role in stabilizing the inspection door (3). The inspection door (3) is located in the inspection opening (2).

7. A coal mill roller maintenance device according to claim 1, characterized in that: The top end of the dustproof box (8) is connected to a plurality of fixing clips (16), the plurality of fixing clips (16) are commonly fixed to a multi-stage telescopic rod (17), and the outer periphery of the moving part of the multi-stage telescopic rod (17) is connected to a lighting lamp (18) for maintenance lighting and a camera (19) for maintenance recording.

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