Wear-resistant pulverized coal burner

Abstract

The utility model discloses a wear-resistant pulverized coal burner which comprises an installation seat, a pulverized coal input pipe and an oxygen input pipe are arranged on the installation seat, threads are arranged on the outer wall of the oxygen input pipe, a second nut is arranged on the outer wall of the oxygen input pipe in a sleeved mode, and threads are arranged on the outer wall of the pulverized coal input pipe. A fixing frame is arranged on one side of the mounting base, an outer cylinder is movably connected to one side of the fixing frame, the pulverized coal conveying channel is formed in the inner wall of the outer cylinder, and one side of the pulverized coal conveying channel is movably connected with the pulverized coal input pipe; an oxygen nozzle is arranged on the inner side of the pulverized coal conveying channel, and one side of the oxygen nozzle is movably connected with an oxygen input pipe. The device can reduce abrasion of the inner wall of the pulverized coal conveying channel, meanwhile, the pulverized coal conveying channel can be rapidly replaced, and the maintenance cost of the pulverized coal conveying channel is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal powder burner technical field, concretely is a wear -resisting type coal powder burner. BACKGROUND

[0002] Coal powder burner is a kind of equipment specially designed for burning powdered coal (coal powder), and is widely used in industrial processes requiring a large amount of heat energy, such as power plant boilers, steel plant blast furnaces and other industrial heating furnaces;Its main function is to mix coal powder with air (or oxygen) and spray it into the combustion chamber at an appropriate flow rate and mode to achieve efficient and stable combustion process.

[0003] During use, due to the high-speed flow of coal powder, the coal powder rubs against the inner wall of the coal powder burner during flow, which easily causes unevenness of the inner wall of the coal powder burner, thereby easily causing instability of subsequent coal powder delivery, affecting normal use of the coal powder burner, and therefore needs to be improved. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a wear -resisting type coal powder burner to solve the problem of easy wear of the inner wall of the coal powder burner during coal powder delivery as proposed in the above background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a wear -resisting type coal powder burner, comprising a mounting seat, the mounting seat is provided with a coal powder input pipe and an oxygen input pipe, a fixed frame is arranged on one side of the mounting seat, an outer cylinder is movably connected to one side of the fixed frame, a coal powder delivery channel is arranged on the inner wall of the outer cylinder, one side of the coal powder delivery channel is movably connected to the coal powder input pipe, an oxygen jet head is arranged on the inner side of the coal powder delivery channel, one side of the oxygen jet head is movably connected to the oxygen input pipe, and a tungsten carbide coating is arranged inside the cavity of the coal powder delivery channel.

[0006] Preferably, the outer wall of the coal powder input pipe is provided with threads, a first nut is sleeved on the outer wall of the coal powder input pipe, and the first nut is threadedly connected to the coal powder input pipe and one side of the coal powder delivery channel.

[0007] Preferably, the outer wall of the oxygen input pipe is provided with threads, a second nut is sleeved on the outer wall of the oxygen input pipe, and the second nut is threadedly connected to the oxygen input pipe and the oxygen jet head.

[0008] Preferably, threads are formed on the outer walls of the fixed frame and the outer cylinder, and a third nut is sleeved on the outer walls of the fixed frame and the outer cylinder.

[0009] Preferably, the outer cylinder and the fixed frame form a splicing structure, and the fixed frame and the outer cylinder are threadedly connected to the third nut.

[0010] Preferably, the mounting seat is fixedly connected to the fixed frame, and a gap is reserved between the mounting seat and the fixed frame.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] (1), this device can reduce the abrasion of the inner wall of pulverized coal conveying channel, also can realize the quick replacement of pulverized coal conveying channel, reduce the cost of maintaining pulverized coal conveying channel.

[0013] (2), this device through setting tungsten carbide coating in the inside of pulverized coal conveying channel, simultaneously inserts the pulverized coal conveying channel in the inside of outer tube, and fixes the outer tube and pulverized coal conveying channel on the fixed frame, thereby can replace the pulverized coal conveying channel alone after the abrasion of pulverized coal conveying channel, reduce the cost of maintaining pulverized coal conveying channel.

[0014] (3), this device can realize the quick assembly and disassembly of outer tube and pulverized coal conveying channel, thereby facilitate the maintenance work. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a wear-resistant coal powder burner structure schematic view of the utility model;

[0016] Figure 2 It is a wear-resistant coal powder burner of the utility model Figure 2 It is the enlarged view of A place in the middle;

[0017] Figure 4 It is the right view of a wear-resistant coal powder burner of the utility model.

[0018] In the drawing: 1, pulverized coal input pipe;2, mounting seat;3, first nut;4, fixed frame;5, third nut;6, outer tube;7, oxygen input pipe;8, second nut;9, pulverized coal conveying channel;10, oxygen jet;11, tungsten carbide coating. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Please refer to Figures 1-4The utility model provides a technical scheme: a kind of wear-resistant pulverized coal burner, including mounting seat 2, mounting seat 2 is provided with pulverized coal input pipe 1 and oxygen input pipe 7, the outer wall of pulverized coal input pipe 1 is provided with thread, the outer wall of pulverized coal input pipe 1 is equipped with first nut 3, and first nut 3 is formed thread connection with pulverized coal input pipe 1 and pulverized coal conveying channel 9 one side;This structure can realize the quick installation and disassembly of pulverized coal input pipe 1 and pulverized coal conveying channel 9 by first nut 3;The outer wall of oxygen input pipe 7 is provided with thread, the outer wall of oxygen input pipe 7 is equipped with second nut 8, and second nut 8 is formed thread connection with oxygen input pipe 7 and oxygen jet head 10;This structure can be quickly connected and disassembled by second nut 8 oxygen input pipe 7 and oxygen jet head 10;Mounting seat 2 one side is provided with fixed frame 4, and the outer wall of fixed frame 4 and outer cylinder 6 is all provided with thread, and the outer wall of fixed frame 4 is equipped with third nut 5 with outer cylinder 6;Outer cylinder 6 and fixed frame 4 form splicing structure, and the outer wall of fixed frame 4 and outer cylinder 6 is formed thread connection with third nut 5;This structure can quickly fix fixed frame 4 and outer cylinder 6 by third nut 5;Mounting seat 2 is fixedly connected with fixed frame 4, and gap is reserved between mounting seat 2 and fixed frame 4;This structure reserves the gap between mounting seat 2 and fixed frame 4, and then it is convenient to rotate and operate first nut 3 and second nut 8;Fixed frame 4 one side is movably connected with outer cylinder 6, and the inner wall of outer cylinder 6 is provided with pulverized coal conveying channel 9;The tungsten carbide coating 11 of this structure, the tungsten carbide coating has the characteristics of wear resistance, high temperature resistance, so as to play the protection role to the inner cavity of pulverized coal conveying channel 9;Pulverized coal conveying channel 9 one side is movably connected with pulverized coal input pipe 1, and the inboard of pulverized coal conveying channel 9 is provided with oxygen jet head 10, and oxygen jet head 10 one side is movably connected with oxygen input pipe 7, and the cavity of pulverized coal conveying channel 9 is provided with tungsten carbide coating 11;The outer cylinder 6, pulverized coal conveying channel 9 and oxygen jet head 10 of the device can be quickly separated with fixed frame 4.

[0021] Working principle: when using the wear-resistant pulverized coal burner, if pulverized coal conveying channel 9 needs to be disassembled, first nut 3 can be rotated to the end of pulverized coal input pipe 1, so that first nut 3 is completely moved to the pulverized coal input pipe 1, at this time, pulverized coal conveying channel 9 can be pulled out from the inside of fixed frame 4 and outer cylinder 6, if outer cylinder 6 needs to be disassembled, third nut 5 can be rotated to the end of outer cylinder 6, so that third nut 5 is separated from fixed frame 4, at this time, outer cylinder 6 can be separated from fixed frame 4 to complete disassembly, if oxygen jet head 10 needs to be disassembled, second nut 8 can be rotated to the end of oxygen input pipe 7, and then oxygen jet head 10 can be separated from fixed frame 4, and in the use process of the device, coal powder contacts tungsten carbide coating 11 when passing through the inside of pulverized coal conveying channel 9, so as to improve the wear resistance of pulverized coal conveying channel 9.

[0022] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A wear-resistant pulverized coal burner comprising a mounting seat (2), characterized in that: The mounting seat (2) is provided with a pulverized coal input pipe (1) and an oxygen input pipe (7), one side of the mounting seat (2) is provided with a fixing frame (4), one side of the fixing frame (4) is movably connected with an outer cylinder (6), the inner wall of the outer cylinder (6) is provided with a pulverized coal conveying channel (9), one side of the pulverized coal conveying channel (9) is movably connected with the pulverized coal input pipe (1), the inner side of the pulverized coal conveying channel (9) is provided with an oxygen nozzle (10), one side of the oxygen nozzle (10) is movably connected with the oxygen input pipe (7), and the cavity of the pulverized coal conveying channel (9) is provided with a tungsten carbide coating (11).

2. A wear resistant pulverized coal burner according to claim 1, characterized in that: The outer wall of the pulverized coal input pipe (1) is provided with threads, the outer wall of the pulverized coal input pipe (1) is sleeved with a first nut (3), and the first nut (3) is threadedly connected with the pulverized coal input pipe (1) and one side of the pulverized coal conveying channel (9).

3. A wear resistant pulverized coal burner according to claim 1, characterized in that: The outer wall of the oxygen input pipe (7) is provided with threads, the outer wall of the oxygen input pipe (7) is sleeved with a second nut (8), and the second nut (8) is threadedly connected with the oxygen input pipe (7) and the oxygen nozzle (10).

4. The abrasion resistant coal powder burner according to claim 1, characterized in that: The outer walls of the fixing frame (4) and the outer cylinder (6) are provided with threads, and the outer walls of the fixing frame (4) and the outer cylinder (6) are sleeved with a third nut (5).

5. A wear resistant pulverized coal burner according to claim 1, characterized in that: The outer cylinder (6) and the fixing frame (4) form a splicing structure, and the fixing frame (4) and the outer cylinder (6) are threadedly connected with the third nut (5).

6. A wear resistant pulverized coal burner according to claim 1, characterized in that: The mounting seat (2) is fixedly connected with the fixing frame (4), and a gap is reserved between the mounting seat (2) and the fixing frame (4).

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