Waste gas treatment device for bauxite shaft kiln

Abstract

The utility model discloses a waste gas treatment device for a bauxite shaft kiln, which relates to the technical field of waste gas treatment and comprises a gas inlet pipeline and a gas outlet pipeline, a second mounting ring is mounted on the surface of the gas inlet pipeline, and a first mounting ring is mounted on the surface of the gas outlet pipeline. The upper end of the first mounting ring and the lower end of the second mounting ring are each provided with an annular clamping groove, filtering pipelines are installed between the air inlet pipeline and the air outlet pipeline, and a plurality of bent air passing channels are formed between the filtering pipelines. When waste gas passes through the plurality of gas passing channels in the filtering pipeline, dust particles in the waste gas can impact on the surfaces of the gas passing channels at the bending parts of the gas passing channels, and the dust particles can be adhered to the bending parts of the expired channels due to the fact that the waste gas contains sulfide, so that the content of the dust particles in the waste gas is reduced, and the service life of the waste gas is prolonged. The subsequent waste gas treatment process is reduced, so that the waste gas treatment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a waste gas treatment device for a bauxite vertical kiln. Background Art

[0002] Bauxite, also known as alumina or bauxite, is mainly composed of aluminum oxide. It is a hydrated aluminum oxide containing impurities and is a soil-like mineral. When bauxite is fired in a vertical kiln, a large amount of waste gas is produced, and special treatment equipment is required to remove the toxic components in the waste gas.

[0003] Existing vertical kiln waste gas treatment devices generally transport the waste gas generated by the vertical kiln through pipelines. However, the waste gas generated by the vertical kiln contains not only toxic gases, but also a large number of dust particles. During the transportation through the pipeline, the waste gas will be transported synchronously, and a large number of dust particles will affect the efficiency of subsequent waste gas treatment. Utility Model Content

[0004] The utility model aims to provide a bauxite shaft kiln waste gas treatment 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: an exhaust gas treatment device for a bauxite vertical kiln, comprising an air inlet pipe and an air outlet pipe, a second mounting ring is installed on the surface of the air inlet pipe, a first mounting ring is installed on the surface of the air outlet pipe, an annular groove is provided at the upper end of the first mounting ring and a lower end of the second mounting ring, a filter pipe is installed between the air inlet pipe and the air outlet pipe, a plurality of bent air passages are provided between the filter pipes, two sliding rings are slidably installed on the surface of the filter pipe, an annular block is installed on the upper end of the upper sliding ring, and an annular block is installed on the lower end of the lower sliding ring, and the two annular blocks are respectively adapted to the two annular grooves.

[0006] Preferably, a connection structure is installed on the surfaces of the air inlet pipe and the air outlet pipe.

[0007] Preferably, the connecting structure includes an upper connecting plate, a supporting arc plate and a lower connecting plate. The surface of the air inlet pipe is installed with an annular upper connecting plate, and the surface of the air outlet pipe is installed with an annular lower connecting plate. Two supporting arc plates are symmetrically installed between the upper connecting plate and the lower connecting plate, and the spacing between the two supporting arc plates is greater than the size of the filter pipe.

[0008] Preferably, a flange is installed at the lower end of the air outlet pipe.

[0009] Preferably, a fixed ring plate is installed at the center of the outer surface of the filter pipe, and a plurality of threaded rods are installed in an array at both upper and lower ends of the fixed ring plate, and locking nuts are threadedly connected to the surfaces of the threaded rods.

[0010] Preferably, the surfaces of the two sliding rings are provided with a plurality of through holes in an array, the positions of the through holes match the positions of the threaded rods, and the sizes of the through holes are larger than the sizes of the threaded rods and smaller than the sizes of the locking nuts.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the exhaust gas treatment device of the bauxite vertical kiln, the exhaust gas enters through an air inlet pipe and is transported through a filter pipe and an exhaust pipe. A second mounting ring is installed on the surface of the air inlet pipe, and a first mounting ring is installed on the surface of the exhaust pipe. An annular groove is provided on the surface of the first mounting ring and the second mounting ring. The filter pipe is installed between the air inlet pipe and the exhaust pipe through two annular grooves and two annular clamping blocks. When the exhaust gas passes through multiple air passages inside the filter pipe, dust particles inside the exhaust gas will collide with the surface of the air passage at the bend of the air passage. Since the exhaust gas contains sulfide inside, the dust particles will be contaminated at the bend of the air passage, thereby reducing the content of dust particles in the exhaust gas, reducing the subsequent exhaust gas treatment process, and increasing the efficiency of the exhaust gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the disassembly of the overall structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the sliding ring and the through hole of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the gas passage of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the sliding ring and the threaded rod of the utility model.

[0018] In the figure: 1. air inlet pipe; 2. air outlet pipe; 3. connection structure; 301. upper connection plate; 302. support arc plate; 303. lower connection plate; 4. filter pipe; 5. flange; 6. threaded rod; 7. locking nut; 8. first mounting ring; 9. annular groove; 10. air passage; 11. sliding ring; 12. annular block; 13. through hole; 14. fixed ring plate; 15. second mounting ring. 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] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] like Figures 1 to 5As shown, the exhaust gas treatment device of the bauxite shaft kiln in this embodiment includes an air inlet pipe 1 and an air outlet pipe 2. A second mounting ring 15 is installed on the surface of the air inlet pipe 1, and the second mounting ring 15 is fixedly installed on the surface of the air inlet pipe 1. A first mounting ring 8 is installed on the surface of the air outlet pipe 2, and the first mounting ring 8 is fixedly installed on the surface of the air outlet pipe 2. The first mounting ring 8 and the second mounting ring 15 have the same size. The upper end of the first mounting ring 8 and the lower end of the second mounting ring 15 are both provided with an annular groove 9. The two annular grooves 9 have the same size and are opposite in direction. A filter pipe 4 is installed between the air inlet pipe 1 and the air outlet pipe 2. A plurality of bent air passages 10 are provided between the filter pipes 4. The exhaust gas passes through the filter pipes 4. When there are multiple air passages 10 inside the pipe 4, the dust particles inside the exhaust gas will collide with the surface of the air passage 10 at the bend of the air passage 10. Since the exhaust gas contains sulfides, the dust particles will be contaminated at the bend of the air passage, thereby reducing the content of dust particles in the exhaust gas. Two sliding rings 11 are slidably installed on the surface of the filter pipe 4. An annular clamping block 12 is installed at the upper end of the upper sliding ring 11, and an annular clamping block 12 is installed at the lower end of the lower sliding ring 11. The two annular clamping blocks 12 are respectively matched with the two annular clamping grooves 9, and the two annular clamping blocks 12 are clamped and connected by the two annular clamping grooves 9 and the two annular clamping blocks 12, so that the filter pipe 4 is installed between the air inlet pipe 1 and the air outlet pipe 2.

[0023] Specifically, a connection structure 3 is installed on the surfaces of the air inlet pipe 1 and the air outlet pipe 2. The air inlet pipe 1 and the air outlet pipe 2 are connected together through the connection structure 3, so that the positions of the air inlet pipe 1 and the air outlet pipe 2 will not change.

[0024] Furthermore, the connecting structure 3 includes an upper connecting plate 301, a supporting arc plate 302 and a lower connecting plate 303. The surface of the air inlet pipe 1 is installed with an annular upper connecting plate 301, and the surface of the air outlet pipe 2 is installed with an annular lower connecting plate 303. Two supporting arc plates 302 are symmetrically installed between the upper connecting plate 301 and the lower connecting plate 303. The spacing between the two supporting arc plates 302 is greater than the size of the filter pipe 4, and the positions of the upper connecting plate 301 and the lower connecting plate 303 are fixed. The upper connecting plate 301 and the lower connecting plate 303 are connected together by the two supporting arc plates 302. The spacing between the two supporting arc plates 302 is greater than the size of the filter pipe 4, so that the filter pipe 4 can be pulled out or put in from between the two supporting arc plates 302.

[0025] Furthermore, a flange 5 is installed at the lower end of the gas outlet pipe 2, and the gas outlet pipe 2 is connected to other external pipes through the flange 5, so as to transport the exhaust gas to the treatment device.

[0026] Furthermore, a fixed ring plate 14 is installed at the center position of the outer surface of the filter pipe 4, and multiple threaded rods 6 are installed in an array at the upper and lower ends of the fixed ring plate 14. The surface of the threaded rod 6 is threadedly connected with a locking nut 7, and the locking nut 7 is threadedly connected to the surface of the threaded rod 6 and can move along the length direction of the threaded rod 6.

[0027] Furthermore, the surfaces of the two sliding rings 11 are arranged in an array with a plurality of through holes 13, the positions of the through holes 13 are adapted to the positions of the threaded rod 6, the size of the through holes 13 is larger than the size of the threaded rod 6 and smaller than the size of the locking nut 7, the filter pipe 4 is placed between the air inlet pipe 1 and the air outlet pipe 2, and the two sliding rings 11 are respectively coincident with the positions of the first mounting ring 8 and the second mounting ring 15, and the locking nut 7 is rotated upward, the locking nut 7 will drive one sliding ring 11 to move toward the position of the second mounting ring 15, and an annular clamping block 12 is clamped with the annular clamping groove 9 at the lower end of the second mounting ring 15, and then the locking nut 7 is rotated downward to move the other sliding ring 11 to the position of the first mounting ring 8, and similarly, the sliding ring 11 and the first mounting ring 8 are clamped together, and the positions of the two sliding rings 11 are fixed by the locking nut 7, thereby fixing the position of the filter pipe 4.

[0028] The method of using this embodiment is as follows: exhaust gas enters through an air intake pipe 1 and is transported through a filter pipe 4 and an exhaust pipe 2. A second mounting ring 15 is installed on the surface of the air intake pipe 1, and a first mounting ring 8 is installed on the surface of the exhaust pipe 2. An annular groove 9 is provided on the surface of the first mounting ring 8 and the second mounting ring 15. The filter pipe 4 is installed between the air intake pipe 1 and the exhaust pipe 2 through two annular grooves 9 and two annular blocks 12. When the exhaust gas passes through multiple air passages 10 inside the filter pipe 4, dust particles inside the exhaust gas will collide with the surface of the air passage 10 at the bend of the air passage 10. Since the exhaust gas contains sulfides inside, the dust particles will be contaminated at the bend of the air passage, thereby reducing the content of dust particles in the exhaust gas, reducing the subsequent exhaust gas treatment process, and increasing the efficiency of the exhaust gas treatment.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. 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 bauxite shaft kiln waste gas treatment device, comprising an air inlet pipe (1) and an air outlet pipe (2), characterized in that: A second mounting ring (15) is mounted on the surface of the air inlet pipe (1), and a first mounting ring (8) is mounted on the surface of the air outlet pipe (2). An annular groove (9) is provided at the upper end of the first mounting ring (8) and the lower end of the second mounting ring (15). A filter pipe (4) is mounted between the air inlet pipe (1) and the air outlet pipe (2). A plurality of bent air passages (10) are provided between the filter pipes (4). Two sliding rings (11) are slidably mounted on the surface of the filter pipe (4). An annular block (12) is mounted at the upper end of the upper sliding ring (11), and an annular block (12) is mounted at the lower end of the lower sliding ring (11). The two annular blocks (12) are respectively matched with the two annular grooves (9).

2. The exhaust gas treatment device for bauxite shaft kiln according to claim 1 is characterized in that: A connection structure (3) is installed on the surfaces of the air inlet pipe (1) and the air outlet pipe (2).

3. The exhaust gas treatment device for bauxite shaft kiln according to claim 2 is characterized in that: The connection structure (3) comprises an upper connection plate (301), a supporting arc plate (302) and a lower connection plate (303); the surface of the air inlet pipe (1) is provided with an annular upper connection plate (301); the surface of the air outlet pipe (2) is provided with an annular lower connection plate (303); two supporting arc plates (302) are symmetrically installed between the upper connection plate (301) and the lower connection plate (303); the distance between the two supporting arc plates (302) is greater than the size of the filter pipe (4).

4. The exhaust gas treatment device for bauxite shaft kiln according to claim 1 is characterized in that: A flange (5) is installed at the lower end of the air outlet pipe (2).

5. The exhaust gas treatment device for bauxite shaft kiln according to claim 1 is characterized in that: A fixed ring plate (14) is installed at the center of the outer surface of the filter pipe (4), and a plurality of threaded rods (6) are installed in an array at both the upper and lower ends of the fixed ring plate (14), and locking nuts (7) are threadedly connected to the surfaces of the threaded rods (6).

6. The exhaust gas treatment device for bauxite shaft kiln according to claim 5 is characterized in that: The surfaces of the two sliding rings (11) are each provided with a plurality of through holes (13) in an array, the positions of the through holes (13) being adapted to the positions of the threaded rods (6), and the sizes of the through holes (13) being larger than the sizes of the threaded rods (6) and smaller than the sizes of the locking nuts (7).

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