Pellet shaft furnace tooth roller sealing structure

Abstract

The utility model relates to a pellet shaft furnace tooth roller sealing structure, which belongs to the technical field of tooth rollers, and comprises a furnace body, the furnace body is fixedly connected with a sealing box, the sealing box is internally and rotatably connected with a rotating shaft, and the outer surface of the rotating shaft is fixedly connected with a tooth roller body. The fan blades, the gas inlet channel, the gas inlet filter screen, the gas exhaust channel and the gas exhaust filter screen are used in cooperation, when the tooth roller body works, the fan blades are driven by the rotating shaft to rotate, gas in a furnace body is extracted by the fan blades through the gas inlet channel, dust carried by the gas in the furnace body is filtered by the gas inlet filter screen, the dust is prevented from entering a sealing box, and the service life of the furnace body is prolonged. And the rotation of the fan blades can exhaust the extracted gas in the furnace body through the exhaust channel, so that the gas and dust in the furnace body are prevented from entering the sealing box through the fixed cover and the rotating part of the rotating shaft, and high-pressure hot air and dust in the furnace are prevented from being blown out along the two ends of the tooth roller shaft.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tooth roll technical field, concretely relates to a kind of pellet vertical furnace tooth roll sealing structure. BACKGROUND

[0002] Vertical furnace refers to furnace body vertical, and vertical shaft is arranged on furnace cover, and high-temperature waste gas discharged by electric arc furnace is used to preheat scrap steel in vertical shaft of super-high power electric arc furnace, and furnace gas moves upward in furnace, and presents counterflow heat exchange between furnace charge and fuel;Most of the furnace charge of vertical furnace directly contacts with fuel, and vertical furnace is the main equipment for roasting iron ore pellets, and vertical furnace method has the advantages of simple structure, no special requirement for material, less investment, improved thermal efficiency, convenient operation and maintenance, etc., wherein, tooth roll is the core spare part of pellet vertical furnace, it is installed in the lower part of cooling zone of vertical furnace, and the main function is to support column, movable column, crushing and discharging.

[0003] At present, the existing pellet vertical furnace works, the tooth roll in the vertical furnace rotates at high speed, due to the insufficient sealing effect, the high-pressure hot air and dust in the vertical furnace are blown out along the both ends of the tooth roll shaft during production, which affects the service life of the vertical furnace tooth roll, based on this, a kind of pellet vertical furnace tooth roll sealing structure is provided. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of pellet vertical furnace tooth roll sealing structure with simple structure and reasonable design to solve the above problems.

[0005] The utility model achieves the above-mentioned purposes by the following technical solutions:

[0006] A kind of pellet vertical furnace tooth roll sealing structure, including furnace body, the fixed connection of sealing box is formed on the furnace body, rotatingly connected with the rotating shaft in the sealing box, the outer surface of the rotating shaft is fixedly connected with the tooth roll body, the one end of the sealing box close to tooth roll body is connected with fixed cover by bolt, the one end of the sealing box close to tooth roll body is provided with recess, the outer surface of the rotating shaft is fixedly connected with bearing, the bearing is located in recess and is attached to recess, the outer surface of the rotating shaft is fixedly connected with cleaning mechanism.

[0007] As a further optimization scheme of the utility model, the part of the outer surface of the rotating shaft located in recess is fixedly connected with fan blade, the outer surface of the sealing box is provided with air inlet channel, the fixed rod is fixedly connected in the air inlet channel, the air inlet filter screen is fixedly connected in the air inlet channel.

[0008] As a further optimization scheme of the utility model, the air inlet filter screen is located on the outer surface of the sealing box, the fan blade is located on the right side of the air inlet channel, and the bearing is located on the left side of the air inlet channel.

[0009] As a further optimization of this utility model, an exhaust channel is provided on the fixed cover, a connecting rod is fixedly connected in the exhaust channel, and an exhaust filter is fixedly connected in the exhaust channel.

[0010] As a further optimization of this utility model, the exhaust filter is located on the outer surface of the fixed cover.

[0011] As a further optimization of this utility model, the cleaning mechanism includes a cleaning rod fixedly connected to the outer surface of the rotating shaft. A first brush bristle and a second brush bristle are fixedly connected to the cleaning rod. The first brush bristle is in contact with the exhaust side of the exhaust filter, and the second brush bristle is in contact with the intake side of the intake filter.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention utilizes the combined use of fan blades, an air inlet channel, an air inlet filter, an exhaust channel, and an exhaust filter. When the toothed roller body is working, the fan blades are driven to rotate via the rotating shaft. This causes the fan blades to draw gas from the furnace through the air inlet channel. The dust carried by the gas inside the furnace is filtered by the air inlet filter to prevent dust from entering the sealed box. The rotation of the fan blades will discharge the drawn gas from the furnace through the exhaust channel, preventing gas and dust from entering the sealed box through the fixed cover and the rotating part of the shaft. This prevents high-pressure hot air and dust from being blown out along both ends of the toothed roller shaft. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model.

[0016] Figure 3 This is the utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0017] Figure 4 This is a schematic diagram of the three-dimensional partial cross-section structure of this utility model.

[0018] In the diagram: 1. Furnace body; 2. Sealing box; 3. Rotating shaft; 4. Toothed roller body; 5. Groove; 6. Bearing; 7. Air inlet channel; 8. Fixing rod; 9. Air inlet filter; 10. Fan blade; 11. Fixing cover; 12. Exhaust channel; 13. Connecting rod; 14. Exhaust filter; 15. Cleaning rod; 16. First brush bristles; 17. Second brush bristles. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a toothed roller sealing structure for a pelletizing vertical shaft furnace includes a furnace body 1. A sealing box 2 is fixedly connected to the furnace body 1. A rotating shaft 3 is rotatably connected inside the sealing box 2. A toothed roller body 4 is fixedly connected to the outer surface of the rotating shaft 3. A fixed cover 11 is bolted to one end of the sealing box 2 near the toothed roller body 4. An exhaust channel 12 is provided on the fixed cover 11. A connecting rod 13 is fixedly connected inside the exhaust channel 12. An exhaust filter 14 is fixedly connected inside the exhaust channel 12. The exhaust filter 14 is located on the outer surface of the fixed cover 11. The sealing box 2 is located near the toothed roller body 4. A groove 5 is provided at one end. A bearing 6 is fixedly connected to the outer surface of the rotating shaft 3. A fan blade 10 is fixedly connected to the part of the outer surface of the rotating shaft 3 located in the groove 5. An air intake channel 7 is provided on the outer surface of the sealing box 2. The fan blade 10 is located on the right side of the air intake channel 7. The bearing 6 is located on the left side of the air intake channel 7. A fixing rod 8 is fixedly connected in the air intake channel 7. An air intake filter 9 is fixedly connected in the air intake channel 7. The air intake filter 9 is located on the outer surface of the sealing box 2. The bearing 6 is located in the groove 5 and fits against the groove 5. A cleaning mechanism is fixedly connected to the outer surface of the rotating shaft 3.

[0021] When the toothed roller body 4 rotates, the rotating shaft 3 also rotates. At this time, the rotating shaft 3 will drive the fan blade 10 to rotate, which will cause the fan blade 10 to draw gas from the furnace body 1 through the air intake channel 7. The dust carried by the gas in the furnace body 1 will be filtered by the air intake filter 9 to prevent the dust from entering the sealed box 2. The rotation of the fan blade 10 will discharge the gas drawn from the furnace body 1 through the exhaust channel 12, preventing the gas and dust in the furnace body 1 from entering the sealed box 2 through the fixed cover 11 and the rotating part of the rotating shaft 3. This prevents the high-pressure hot air and dust in the furnace from being blown out along both ends of the toothed roller shaft. In addition, the exhaust filter 14 will make the amount of hot air and dust entering the furnace body 1 through the exhaust channel 12 greater than the amount entering the end of the toothed roller shaft, further preventing the high-pressure hot air and dust in the furnace from being blown out along both ends of the toothed roller shaft. The exhaust filter 14 can block the dust and prevent the dust from entering the sealed box 2.

[0022] like Figure 1 , Figure 3 and Figure 4As shown, the cleaning mechanism includes a cleaning rod 15 fixedly connected to the outer surface of the rotating shaft 3. A first brush bristle 16 and a second brush bristle 17 are fixedly connected to the cleaning rod 15. The first brush bristle 16 is attached to the exhaust side of the exhaust filter screen 14, and the second brush bristle 17 is attached to the intake side of the intake filter screen 9.

[0023] When the rotating shaft 3 rotates, it will drive the cleaning rod 15 to rotate, causing the first bristle 16 to rotate along the exhaust side of the exhaust filter screen 14 and the second bristle 17 to rotate along the intake side of the intake filter screen 9, thereby effectively cleaning the exhaust filter screen 14 and the intake filter screen 9, avoiding the accumulation of dust from affecting the exhaust efficiency of the exhaust filter screen 14, and further preventing the high-pressure hot air and dust in the furnace from being blown out along both ends of the toothed roller shaft.

[0024] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A toothed roller sealing structure for a pelletizing vertical shaft furnace, comprising a furnace body (1), a sealing box (2) fixedly connected to the furnace body (1), a rotating shaft (3) rotatably connected inside the sealing box (2), and a toothed roller body (4) fixedly connected to the outer surface of the rotating shaft (3), characterized in that: The sealing box (2) is connected to a fixed cover (11) by bolts at one end near the toothed roller body (4). The sealing box (2) is provided with a groove (5) at one end near the toothed roller body (4). A bearing (6) is fixedly connected to the outer surface of the rotating shaft (3). The bearing (6) is located in the groove (5) and fits against the groove (5). A cleaning mechanism is fixedly connected to the outer surface of the rotating shaft (3).

2. The toothed roller sealing structure for a pelletizing vertical furnace according to claim 1, characterized in that: A fan blade (10) is fixedly connected to the outer surface of the rotating shaft (3) located in the groove (5). An air intake channel (7) is opened on the outer surface of the sealing box (2). A fixing rod (8) is fixedly connected in the air intake channel (7). An air intake filter (9) is fixedly connected in the air intake channel (7).

3. The toothed roller sealing structure for a pelletizing vertical furnace according to claim 2, characterized in that: The air intake filter (9) is located on the outer surface of the sealed box (2), the fan blade (10) is located on the right side of the air intake channel (7), and the bearing (6) is located on the left side of the air intake channel (7).

4. The toothed roller sealing structure for a pelletizing vertical furnace according to claim 2, characterized in that: An exhaust channel (12) is provided on the fixed cover (11), a connecting rod (13) is fixedly connected in the exhaust channel (12), and an exhaust filter (14) is fixedly connected in the exhaust channel (12).

5. The toothed roller sealing structure for a pelletizing vertical furnace according to claim 4, characterized in that: The exhaust filter (14) is located on the outer surface of the fixed cover (11).

6. The toothed roller sealing structure for a pelletizing vertical furnace according to claim 4, characterized in that: The cleaning mechanism includes a cleaning rod (15) fixedly connected to the outer surface of the rotating shaft (3). A first brush (16) and a second brush (17) are fixedly connected to the cleaning rod (15). The first brush (16) is in contact with the exhaust side of the exhaust filter (14), and the second brush (17) is in contact with the intake side of the intake filter (9).

Images