Device for preventing ash deposition in waste gas flue

Abstract

The utility model discloses a device for preventing dust accumulation in a waste gas flue, and particularly relates to the technical field of sintering kiln flues, which comprises a mounting rack, a flue is arranged on one side of the mounting rack, and a gas transmission mechanism is arranged at the top of the mounting rack; the gas conveying mechanism comprises two supports fixedly connected to one side of the fixing ring, balls are rotationally connected to the inner sides of the supports, a gas blowing pipeline is slidably connected to the inner side of the flue, a plurality of gas blowing holes are formed in the inner side of the gas blowing pipeline, and a gas inlet hole is formed in one side of the gas blowing pipeline. A reciprocating mechanism is arranged outside the mounting frame. According to the utility model, the plurality of blowing holes and the reciprocating deflection motion driven by the cylinder are utilized to continuously blow dust in the flue, so that accumulation is avoided, blockage is reduced, an effective waste gas circulation area is kept, and meanwhile, the spiral guide groove structure widens the blowing path and improves the dust blowing efficiency, so that the blow-in time is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of sintering kiln flue technology, and more specifically, to a device for preventing ash accumulation in exhaust gas flues. Background Technology

[0002] Sintering is an indispensable key process in modern steel, building materials (such as ceramics and refractory materials), and non-ferrous metals (such as lead and zinc) industries. Its core equipment, the sintering kiln, generates a large amount of high-temperature dusty waste gas during the production process. The waste gas usually contains high concentrations of dust (such as metal oxides, unburned fuel particles, alkali metal salts, etc.), sulfur oxides, nitrogen oxides, and other harmful components. It must be transported through an efficient flue system to environmental protection facilities such as dust removal, desulfurization, and denitrification for treatment.

[0003] In actual use, under long-term exhaust gas flow, dust in the exhaust gas will continuously accumulate inside the flue. Conventional rapping cleaning has limited effect on high-temperature flues, resulting in a reduction in the effective flow cross-sectional area of ​​the flue and a sharp increase in exhaust gas flow resistance, which affects the gas transmission efficiency of the flue. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a device for preventing ash accumulation in exhaust flues, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for preventing ash accumulation in exhaust ducts includes a mounting frame. A flue is provided on one side of the mounting frame, and an air supply mechanism is provided on the top of the mounting frame. The air supply mechanism includes two brackets fixedly connected to one side of a fixing ring. Ball bearings are rotatably connected to the inner side of the brackets. An air blowing pipe is slidably connected to the inner side of the flue. Multiple air blowing holes are opened on the inner side of the air blowing pipe. An air inlet is opened on one side of the air blowing pipe. An air pump is fixedly connected to the upper surface of the mounting frame. A flexible hose is fixedly connected to the output end of the air pump. An air supply pipe is fixedly connected to one end of the flexible hose. One end of the air supply pipe is fixedly connected to the inner side of the air inlet. A reciprocating mechanism is provided on the outer side of the mounting frame.

[0007] By adopting the above technical solution, air pumps, hoses and air supply pipes are used to continuously supply air to the inside of the air blowing pipe, so that the air blowing pipe and multiple air blowing holes continuously and disperse the air supply to the inside of the flue, avoiding the continuous accumulation of dust inside the flue, reducing the blockage of the transverse flue of the system, and extending the start-up time of the sintering kiln.

[0008] As a further description of the above technical solution: the reciprocating mechanism includes two spiral guide grooves, which are disposed on the outside of the air blowing pipe. A retaining ring is fixedly connected to one end of the air blowing pipe, and a connecting flange is rotatably connected to the outside of the retaining ring. A base frame is fixedly connected to the top of the mounting bracket, and a cylinder is fixedly connected to the inside of the base frame. A cylinder inlet / outlet port is provided on one side of the cylinder, and a cylinder inlet / outlet port is provided on the other side of the cylinder. A cylinder piston is slidably connected to the inside of the cylinder, and a piston rod is fixedly connected to one side of the cylinder piston. The outside of the piston rod is slidably connected to the inside of the cylinder. A retaining ring is fixedly connected to one end of the piston rod, and a connecting flange is rotatably connected to the outside of the retaining ring. Multiple screws are inserted into the inside of the connecting flange, and the outside of the screws is inserted into the inside of the connecting flange.

[0009] By adopting the above technical solution, multiple connecting flanges are used to connect at multiple points, and two supports and ball bearings are used to guide the spiral guide groove to rotate, so that the air blowing pipe can be rotated and guided during the reciprocating movement, thereby improving the flow path of the airflow inside the flue.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] 1. By setting up a gas conveying mechanism, compared with the existing technology, multiple air blowing holes are used to continuously blow the dust inside the flue, which can blow up the dust accumulated in the flue, avoid the continuous accumulation of dust, reduce the blockage of the system's transverse flue, maintain an effective exhaust gas flow area, and extend the start-up time.

[0012] 2. By setting up a reciprocating mechanism, compared with the existing technology, the air blowing pipe is reciprocated by a cylinder, a cylinder inlet / outlet port one, a cylinder inlet / outlet port two, and a piston rod. Combined with the guidance of two spiral guide grooves, a bracket, and balls, the air blowing pipe and air blowing port can be reciprocated and deflected, improving the air blowing path of the air blowing pipe and air blowing port to the inside of the flue and increasing the efficiency of dust dispersion. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the rear structure of this utility model.

[0015] Figure 3 This is a partial schematic diagram of the connection between the fixing rod and the bracket of this utility model.

[0016] Figure 4 This is a partial schematic diagram of the connection between the air blowing pipe and the air delivery pipe of this utility model.

[0017] Figure 5This is a partial schematic diagram of the connection between the air blowing pipe and the connecting flange of this utility model.

[0018] Figure 6 This is a partial schematic diagram of the connection between the cylinder and the piston rod of this utility model.

[0019] The attached diagram is labeled as follows: 1. Mounting bracket; 2. Flue; 3. Fixing ring; 4. Bracket; 5. Ball bearing; 6. Air blowing pipe; 7. Air blowing hole; 8. Retaining ring one; 9. Connecting flange one; 10. Spiral guide groove; 11. Air inlet; 12. Air pump; 13. Hose; 14. Air delivery pipe; 15. Base frame; 16. Cylinder; 17. Cylinder inlet / outlet port one; 18. Cylinder inlet / outlet port two; 19. Cylinder piston; 20. Piston rod; 21. Retaining ring two; 22. Connecting flange two; 23. Screw. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] The embodiments disclosed in this application are as follows: Figure 1-6 The device for preventing dust accumulation in exhaust ducts includes a mounting frame 1, with a flue 2 on one side of the mounting frame 1 and an air supply mechanism on the top of the mounting frame 1. The air supply mechanism includes a fixed ring 3 with two brackets 4 fixedly connected to one side, ball bearings 5 ​​rotatably connected to the inner side of the brackets 4, an air blowing pipe 6 slidably connected to the inner side of the flue 2, multiple air blowing holes 7 opened on the inner side of the air blowing pipe 6, and an air inlet 11 opened on one side of the air blowing pipe 6. An air pump 12 is fixedly connected to the upper surface of the mounting frame 1, a hose 13 is fixedly connected to the output end of the air pump 12, an air supply pipe 14 is fixedly connected to one end of the hose 13, and one end of the air supply pipe 14 is fixedly connected to the inner side of the air inlet 11. A reciprocating mechanism is provided on the outer side of the mounting frame 1. Fresh air is continuously supplied to the inside of the air blowing pipe 6 through the air pump 12, hose 13, and air supply pipe 14 to disperse the dust accumulated inside the flue 2 at multiple points, preventing the dust from continuously accumulating inside the flue 2.

[0022] Reference Figure 1 , Figure 4 and Figure 6As shown, the reciprocating mechanism includes two spiral guide grooves 10, which are located on the outside of the air blowing pipe 6. One end of the air blowing pipe 6 is fixedly connected to a retaining ring 8, and a connecting flange 9 is rotatably connected to the outside of the retaining ring 8. A base frame 15 is fixedly connected to the top of the mounting bracket 1, and a cylinder 16 is fixedly connected to the inside of the base frame 15. One side of the cylinder 16 is provided with a cylinder inlet / outlet port 17, and the other side of the cylinder 16 is provided with a cylinder inlet / outlet port 18. A cylinder piston 19 is slidably connected to the inside of the cylinder 16, and a piston rod 20 is fixedly connected to one side of the cylinder piston 19. The outside of the piston rod 20 is slidably connected to the inside of the cylinder 16, and a retaining ring 21 is fixedly connected to one end of the piston rod 20. The outside of the retaining ring 21 rotates... A connecting flange 22 is connected, and multiple screws 23 are inserted into the inner side of the connecting flange 22. The outer side of the screws 23 is inserted into the inner side of the connecting flange 9. The cylinder 16 is reciprocated through the cylinder inlet / outlet port 17 and the cylinder inlet / outlet port 18. The cylinder piston 19 and piston rod 20 are reciprocated and connected to the air blowing pipe 6 in conjunction with the connecting flange 22, screws 23 and connecting flange 9. The air blowing pipe 6 and the retaining ring 8 rotate inside the connecting flange 9. The bracket 4 and the ball bearing 5 guide the two spiral guide grooves 10, so that the air blowing pipe 6 and the air blowing port 7 have sufficient gas flow path inside the flue 2, which improves the dust blowing efficiency inside the flue 2.

[0023] The working principle of this utility model is as follows: When cleaning the dust inside the flue 2, the air pump 12 is started, and the hose 13 and air supply pipe 14 continuously inject fresh air into the air blowing pipe 6. Fresh air is introduced into the flue 2 through multiple air blowing holes 7 inside the air blowing pipe 6, blowing up the dust inside the flue. At the same time, the external air supply pipe reciprocates the injection and output of air into the cylinder inlet / outlet port 17 and cylinder inlet / outlet port 18, causing the air on both sides of the cylinder piston 19 to push the cylinder piston 19 to reciprocate inside the cylinder 16. This causes the cylinder piston 19 to push the piston rod 20 to move. Then, multiple screws 23 on one side of the piston rod 20 are connected to the connecting flange 9 at multiple points for transmission, allowing the air blowing pipe 6 and the retaining ring 8 to rotate inside the connecting flange 9. Then, the piston rod 20 pushes the connecting flange 22, screw 23 and connecting flange 9 to reciprocate the air blowing pipe 6. During the reciprocating movement of the air blowing pipe 6 inside the fixed ring 3, the two spiral guide grooves 10 on the outside of the air blowing pipe 6 and the two supports 4 and ball bearings 5 ​​on one side of the fixed ring 3 provide rolling guidance. During the reciprocating movement of the air blowing pipe 6 and the two spiral guide grooves 10, the two ball bearings 5 ​​provide rolling guidance, allowing the air blowing pipe 6 to deflect to a certain extent. This allows the multiple air blowing holes 7 inside the air blowing pipe 6 to deflect the air and continuously supply air to the inside of the flue 2. Finally, the dust blown up in the flue is pulled to the secondary combustion chamber by the main kiln system induced draft fan, and then discharged from the system by the secondary combustion chamber shut-off fan, reducing the blockage of the system's transverse flue.

[0024] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0025] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A device for preventing flue dusting, comprising a mounting frame (1), characterized in that: A flue (2) is provided on one side of the mounting frame (1), and a gas supply mechanism is provided on the top of the mounting frame (1); The gas delivery mechanism includes a fixed ring (3) with two brackets (4) fixedly connected to one side, a ball bearing (5) rotatably connected to the inside of the bracket (4), a blowing pipe (6) slidably connected to the inside of the flue (2), a plurality of blowing holes (7) opened on the inside of the blowing pipe (6), and an air inlet (11) opened on one side of the blowing pipe (6). A reciprocating mechanism is provided on the outside of the mounting bracket (1).

2. The apparatus of claim 1, wherein: An air pump (12) is fixedly connected to the upper surface of the mounting bracket (1), and a hose (13) is fixedly connected to the output end of the air pump (12).

3. The apparatus of claim 2, wherein: One end of the hose (13) is fixedly connected to an air supply pipe (14), and one end of the air supply pipe (14) is fixedly connected to the inside of the air inlet (11).

4. The apparatus of claim 1, wherein: The reciprocating mechanism includes two spiral guide grooves (10), which are located on the outside of the air blowing pipe (6). One end of the air blowing pipe (6) is fixedly connected to a retaining ring (8), and a connecting flange (9) is rotatably connected to the outside of the retaining ring (8).

5. The apparatus of claim 1, wherein: The mounting bracket (1) is fixedly connected to the top of the base frame (15), and the base frame (15) is fixedly connected to the inner side of the cylinder (16). The cylinder (16) has a cylinder inlet and outlet port one (17) on one side and a cylinder inlet and outlet port two (18) on the other side.

6. The apparatus of claim 5, wherein: A cylinder piston (19) is slidably connected to the inside of the cylinder (16), and a piston rod (20) is fixedly connected to one side of the cylinder piston (19). The outside of the piston rod (20) is slidably connected to the inside of the cylinder (16).

7. A device according to claim 6, wherein: One end of the piston rod (20) is fixedly connected to a retaining ring (21), and a connecting flange (22) is rotatably connected to the outside of the retaining ring (21). Multiple screws (23) are inserted into the inside of the connecting flange (22), and the outside of the screws (23) is inserted into the inside of the connecting flange (9).

Images