Ash hopper mechanism for colored waste heat boiler

Abstract

The utility model discloses ash bucket mechanism of nonferrous waste heat boiler, including by upper and lower intercommunication ash bucket body, ash cone bucket, ash pipe, ash bucket body, the upper end of ash bucket body is connected with boiler ash outlet, and ash cone bucket gradually becomes smaller from ash bucket body to ash pipe direction caliber, and the furnace door is set up on ash bucket body, and its characterized in that: fixedly set up between ash bucket body and ash cone bucket is grating, and grating is covered with cross -shaped grid, and the side length of every cross -shaped grid is less than the caliber of ash pipe. The utility model has the advantages of simple structure, convenient to use, can leave the big piece's slag on grating, prevents the falling and jam in ash pipe, and the loose ash is discharged through ash pipe, thereby effectively avoids the ash pipe and blocks up.

Description

Technical Field

[0001] This utility model relates to the field of waste heat boiler technology, specifically to the ash hopper of a non-ferrous waste heat boiler. Background Technology

[0002] The high-temperature flue gas produced by non-ferrous smelting has a high dust content, and the dust is highly adhesive. After entering the waste heat boiler for heat release, the temperature drops, and the molten metal in the dust easily adheres to the water-cooled walls and boiler inlet. Over time, the adhered dust slag accumulates, eventually falling into the ash hopper. Large slag pieces can easily clog the ash discharge pipe at the bottom of the ash hopper, and the small cleaning holes make cleaning difficult, affecting subsequent ash discharge. The falling large slag pieces can also deform the ash hopper, affecting its usability. If the accumulated ash slag is not cleaned in time, it will cause more and more ash to accumulate in the boiler furnace, altering the flue gas flow direction and affecting the normal operation of downstream equipment. In severe cases, it can lead to complete blockage of the boiler furnace, paralyzing the entire system. Utility Model Content

[0003] The technical problem this invention aims to solve is to provide an ash hopper mechanism for a non-ferrous waste heat boiler. This mechanism has a simple and ingenious structure, prevents ash pipe blockage, effectively protects the ash hopper, prevents deformation, and significantly extends the service life of the ash hopper. To solve the above problems, the technical solution adopted by this utility model is: an ash hopper mechanism for a non-ferrous waste heat boiler, comprising an ash hopper body, an ash-falling cone, and an ash-falling pipe connected sequentially from top to bottom. The upper end of the ash hopper body is connected to the boiler ash outlet. The diameter of the ash-falling cone gradually decreases from the ash hopper body towards the ash-falling pipe. A furnace door is provided on the ash hopper body. A grid plate is fixedly provided between the ash hopper body and the ash-falling cone. The grid plate is covered with a grid pattern, and the side length of each grid pattern is smaller than the diameter of the ash-falling pipe.

[0004] Furthermore, in the aforementioned ash hopper mechanism of the non-ferrous waste heat boiler, the inner wall of the ash-falling cone hopper forms a 65° angle with the horizontal plane.

[0005] Furthermore, in the aforementioned ash hopper mechanism of the non-ferrous waste heat boiler, furnace doors are provided on both sides of the ash hopper body, and each side furnace door is a double door.

[0006] Furthermore, in the aforementioned ash hopper mechanism of the non-ferrous waste heat boiler, the upper end of the ash hopper body is connected to the boiler ash outlet via an expansion joint, and the ash falling cone and the ash falling pipe are also connected via an expansion joint.

[0007] Furthermore, in the aforementioned ash hopper mechanism of the non-ferrous waste heat boiler, the expansion joint structure includes: an upper and lower annular expansion joint top plate and an expansion joint bottom plate. A flexible expansion joint sealing ring band protruding outwards is arranged around the outer sides of the expansion joint top plate and the expansion joint bottom plate. The upper and lower ends of the expansion joint sealing ring band are fixed to the expansion joint top plate and the expansion joint bottom plate, respectively. A filling cavity is formed between the expansion joint top plate, the expansion joint bottom plate, and the expansion joint sealing ring band. The filling cavity is filled with refractory filler and thermal insulation filler. The thermal insulation filler is located outside the refractory filler, and a wire mesh is arranged inside the refractory filler. A partition plate assembly is arranged between the refractory filler and the thermal insulation filler. The partition plate assembly includes an upper partition plate and a lower partition plate. The upper partition plate extends upwards to the expansion joint top plate and is fixed thereto, and the lower partition plate extends downwards to the expansion joint bottom plate and is fixed thereto. The ends of the upper and lower partition plates are staggered vertically.

[0008] Furthermore, in the aforementioned ash hopper mechanism of the non-ferrous waste heat boiler, a disc spring buffer support is provided at the lower end of the ash hopper body, and the disc spring buffer support is evenly spaced around the ash hopper body.

[0009] The advantages of this invention are: its structure is simple yet ingenious and practical. First, the side lengths of the grid on the grating plate are all smaller than the diameter of the ash discharge pipe. This ensures the separation of large slag particles from loose ash. Large slag particles remain on the grating plate, preventing them from falling and getting stuck in the ash discharge pipe, while loose ash is discharged through the pipe. Second, the thicker steel grating plate is fixed to the ash hopper wall, which can evenly distribute the impact force when large slag particles fall, preventing deformation. Furthermore, disc spring buffer supports are distributed around the ash hopper, forming a frame with the grating plate. When large slag particles fall and impact, the impact force is distributed from the grating plate to each disc spring buffer support, effectively protecting the ash hopper, preventing deformation, and effectively extending the service life of the ash hopper. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the ash hopper mechanism of the non-ferrous waste heat boiler described in this utility model.

[0011] Figure 2 yes Figure 1 Schematic diagram of the AA section structure.

[0012] Figure 3 yes Figure 1 A magnified schematic diagram of the expansion joint. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments.

[0014] like Figure 1 , Figure 2 , Figure 3As shown, the ash hopper mechanism of the non-ferrous waste heat boiler includes an ash hopper body 1, an ash-falling cone 2, and an ash-falling pipe 3 connected sequentially from top to bottom. The upper end of the ash hopper body 1 is connected to the boiler ash outlet. The ash-falling cone 2 is a cone with a gradually decreasing diameter from the ash hopper body 1 towards the ash-falling pipe 3. A furnace door 4 is provided on the ash hopper body 1. In this embodiment, to facilitate ash cleaning, furnace doors 4 are provided on both sides of the ash hopper body 1, and each furnace door 4 is a double door. The double door structure greatly facilitates ash cleaning and makes it easier to remove large pieces of slag. A disc spring buffer support 6 is provided at the lower end of the ash hopper body 1, and the bottom of the disc spring buffer support 6 is fixed to the boiler steel structure 61. The disc spring buffer supports 6 are evenly spaced around the ash hopper body 1. The disc spring buffer supports 6 provide elastic support for the entire ash hopper.

[0015] A grating plate 7 is fixedly installed between the ash hopper body 1 and the ash discharge cone hopper 2. The grating plate 7 is made of 20-30mm thick stainless steel plate. The grating plate 7 is covered with a grid pattern, and the side length of each grid pattern is smaller than the diameter of the ash discharge pipe 3. The top of the grating plate 7 is parallel to the bottom edge of the double-door furnace door 4, which facilitates ash removal.

[0016] In this application, a grid plate 7 is fixedly installed between the ash hopper body 1 and the ash discharge cone hopper 2. Its purpose is to disperse the impact force of large slag particles falling from the hopper, ensuring uniform stress on the ash hopper and preventing localized deformation. The grid plate 7 effectively intercepts falling large slag particles, preventing them from damaging the ash hopper or clogging the ash discharge pipe 3. Simultaneously, the grid plate 7 also separates large slag particles from loose ash.

[0017] In this embodiment, the inner wall of the ash collection cone 2 forms a 65° angle with the horizontal plane. The inner wall of the ash collection cone 2 is relatively steep, which is intended to facilitate the sliding of loose dust and prevent it from adhering to the inner wall of the ash collection cone 2.

[0018] The upper end of the ash hopper body 1 is connected to the boiler ash outlet through an expansion joint 5, and the ash cone hopper 2 and the ash pipe 3 are also connected through an expansion joint 5.

[0019] In this embodiment, the expansion joint 5 includes an annular top plate 51 and a bottom plate 52, arranged at the top and bottom respectively. A flexible expansion joint sealing ring 53, protruding outwards, surrounds the outer sides of the top plate 51 and the bottom plate 52. The upper and lower ends of the sealing ring 53 are fixed to the top plate 51 and the bottom plate 52 respectively, forming a filling cavity between the top plate 51, the bottom plate 52, and the sealing ring 53. The filling cavity is filled with refractory filler 54 and thermal insulation filler 55. The thermal insulation filler 55 is located outside the refractory filler 54, and a wire mesh 56 is provided inside the refractory filler 54. The sealing ring 53 is made of flexible composite material, which provides a good sealing effect and allows for deformation during expansion. A partition plate assembly is provided between the refractory packing 54 and the insulating packing 55. The partition plate assembly includes an upper partition plate 57 and a lower partition plate 58. The upper partition plate 57 extends upward to the top plate 51 of the expansion joint and is fixed thereto. The lower partition plate 58 extends downward to the bottom plate 52 of the expansion joint and is fixed thereto. The ends of the upper partition plate 57 and the lower partition plate 58 are staggered. In this application, the expansion joint 5 is designed to provide deformation allowance when the boiler expands due to heat, preventing damage to the ash hopper due to thermal expansion and contraction of the boiler. The upper partition plate 57 and the lower partition plate 58 are separate units, also to better provide deformation allowance.

[0020] As can be seen from the above, this application provides an ash hopper mechanism for a non-ferrous waste heat boiler, which is simple in structure yet ingenious and practical. First, a grating plate 7 is installed, with the side lengths of the grid pattern on the grating plate 7 all smaller than the diameter of the ash discharge pipe 3. This ensures the separation of large slag deposits from loose ash. Large slag deposits remain on the grating plate 7, preventing them from falling and getting stuck in the ash discharge pipe 3, while loose ash is discharged through the ash discharge pipe 3, effectively preventing blockage. Second, a thicker steel grating plate is fixed to the ash hopper wall, which can evenly distribute the impact force when large slag deposits fall, preventing deformation. Furthermore, disc spring buffer supports 6 are distributed around the ash hopper, forming a frame with the grating plate 7. When large slag deposits fall and impact, the impact force is distributed from the grating plate 7 to each disc spring buffer support, effectively protecting the ash hopper, preventing deformation, and effectively extending the service life of the ash hopper.

Claims

1. An ash hopper mechanism for a non-ferrous waste heat boiler, comprising an ash hopper body, an ash-falling cone, and an ash-falling pipe connected sequentially from top to bottom, wherein the upper end of the ash hopper body is connected to the boiler ash outlet, the diameter of the ash-falling cone gradually decreases from the ash hopper body towards the ash-falling pipe, and a furnace door is provided on the ash hopper body, characterized in that: A grid plate is fixedly installed between the ash hopper body and the ash discharge cone. The grid plate is covered with a grid pattern, and the side length of each grid pattern is smaller than the diameter of the ash discharge pipe.

2. The ash hopper mechanism of the non-ferrous waste heat boiler according to claim 1, characterized in that: The inner wall of the ash-collecting cone forms a 65° angle with the horizontal plane.

3. The ash hopper mechanism of the non-ferrous waste heat boiler according to claim 1, characterized in that: The ash hopper has furnace doors on both sides, and each furnace door is a double door.

4. The ash hopper mechanism of the non-ferrous waste heat boiler according to claim 1, characterized in that: The upper end of the ash hopper body is connected to the boiler ash outlet through an expansion joint, and the ash cone hopper and the ash pipe are also connected through an expansion joint.

5. The ash hopper mechanism of the non-ferrous waste heat boiler according to claim 1, characterized in that: The expansion joint structure includes: an annular top plate and a bottom plate, arranged at the top and bottom. A flexible sealing ring band protruding outwards is arranged around the outer sides of the top and bottom plates. The upper and lower ends of the sealing ring band are fixed to the top and bottom plates, respectively. A filling cavity is formed between the top, bottom, and sealing ring bands. The cavity is filled with refractory filler and insulating filler. The insulating filler is located outside the refractory filler, and a wire mesh is arranged inside the refractory filler. A partition plate assembly is arranged between the refractory filler and the insulating filler. The partition plate assembly includes an upper partition plate and a lower partition plate. The upper partition plate extends upwards to the top plate and is fixed thereto, and the lower partition plate extends downwards to the bottom plate and is fixed thereto. The ends of the upper and lower partition plates are staggered vertically.

6. The ash hopper mechanism of the non-ferrous waste heat boiler according to claim 1, characterized in that: A disc spring buffer support is provided at the lower end of the ash hopper body, and the disc spring buffer support is evenly spaced around the ash hopper body.

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