A stationary distribution device for a double shaft lime kiln

Abstract

The present application relates to the technical fields of furnace kiln calcination, in particular to a fixed type distributing device of double-chamber lime kiln, which is characterized in that a distributing baffle is arranged on the inner wall of one side wall of the housing left and right side walls of the lower feeding gate mechanism, which is adjacent to the corner of the chute, and the side of the distributing baffle facing the feeding direction of the lower feeding gate is an inclined plane which is inclined from top to bottom to the center of the housing, and the included angle between the inclined plane and the inner wall is 2-4°, so that the diameter of the discharging port of the fixed type distributor can be improved by the distributing baffle, the discharging track of the material is changed, and the material can be ensured to fall to the center point of the kiln chamber, thereby ensuring the uniform distribution of the particle size of the material and the flatness of the material surface; the airflow and air pressure in the kiln are ensured to be stable, the cross section is uniformly heated, the risk of lime nodulation and under-burning or over-burning is avoided, and the finished product quality of the limestone is improved.

Description

Technical Field

[0001] This invention relates to the field of furnace and kiln calcination technology, and in particular to a fixed feeding device for a double-chamber lime kiln. Background Technology

[0002] The fixed material distributor in the double-chamber kiln is located at the top of the kiln chamber, with one distributor per chamber. Each distributor has an effective storage capacity of 10 tons. Because the existing fixed-distribution chute has an angled design and a fixed shape, uneven material distribution (material bias, where a thicker layer of material falls near the angled side of the chute) occurs each time material is added to the kiln, resulting in an uneven material surface within the kiln chamber. This unevenness directly affects the calcination quality of the limestone and also causes localized pressure increases within the kiln, both of which are undesirable outcomes for those skilled in the art. Summary of the Invention

[0003] To address the aforementioned problems, this invention discloses a fixed material distribution device for a double-chamber lime kiln, thereby solving the problem of uneven material distribution into the kiln chamber by the fixed material distributor in the prior art.

[0004] A fixed feeding device for a double-chamber lime kiln, wherein the fixed feeding device is disposed above the kiln chamber of the double-chamber lime kiln to feed material into the kiln chamber, wherein the fixed feeding device includes a kiln top hopper, an electro-hydraulic three-way distributor, an upper feeding gate mechanism, a chute, and a lower feeding gate mechanism.

[0005] The kiln top hopper is connected to two chutes via the electro-hydraulic three-way distributor, and each of the two chutes is provided with an upper feeding gate mechanism at the connection point between it and the electro-hydraulic three-way distributor.

[0006] Each of the chutes and the kiln chamber is provided with a lower feeding gate mechanism. The lower feeding gate mechanism includes a shell, a lower feeding gate installed on the shell, and a material distribution baffle disposed inside the shell. The shell is cuboid in shape. The material distribution baffle is fixedly disposed on the inner wall of the side wall of the left and right sides of the shell, near the corner of the chute. The side of the material distribution baffle facing the feeding direction of the lower feeding gate is an inclined surface that slopes from top to bottom toward the center of the shell, and the angle between the inclined surface and the inner wall is 2 to 4°.

[0007] In some embodiments, the fabric baffle is a right-angled triangle plate, which includes a horizontal plane, a vertical plane, and an inclined plane. The vertical plane of the right-angled triangle plate is disposed close to the side wall of the outer shell, and the horizontal plane of the right-angled triangle plate is disposed at the bottom of the outer shell.

[0008] In some embodiments, the width of the horizontal plane of the right-angled triangular plate is 40–60 mm.

[0009] In some embodiments, the vertical surface of the fabric baffle is welded to the outer casing.

[0010] In some embodiments, the vertical surface of the fabric baffle is detachably fixed to the housing.

[0011] In some embodiments, the vertical surface of the fabric baffle is fixed to the housing by bolts.

[0012] In some embodiments, the area of ​​the vertical surface of the fabric baffle is equal to the area of ​​the inner wall of the side wall of the left and right side walls of the housing that is located near the corner of the chute.

[0013] In some of these embodiments, the fabric baffle is welded from steel plates.

[0014] In some embodiments, the thickness of the steel plate is 8 to 12 mm.

[0015] In some of these embodiments, the feeding gate is an electro-hydraulic jaw gate.

[0016] Compared with the prior art, the present invention has the following advantages or beneficial effects:

[0017] This invention provides a fixed material distribution device for a double-chamber lime kiln. A material distribution baffle is installed on the inner wall of the side wall of the outer shell of the lower feeding gate mechanism, near the corner of the chute. The side of the material distribution baffle facing the feeding direction of the lower feeding gate is an inclined plane that slopes from top to bottom towards the center of the outer shell, and the angle between the inclined plane and the inner wall is 2-4°. This allows the material distribution baffle to improve the discharge diameter of the fixed material distributor and change the material discharge trajectory, ensuring that the material falls to the center point of the kiln chamber. This, in turn, ensures uniform particle size distribution and a smooth material surface. It also ensures stable airflow and pressure inside the kiln, uniform heating of the cross-section, avoids the risk of lime nodule formation and under- or over-burning, and thus improves the quality of the finished limestone product. Attached Figure Description

[0018] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; their focus is on illustrating the gist of the invention.

[0019] Figure 1 This is a schematic diagram of the fixed feeding device of the double-chamber lime kiln in an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the lower feeding gate mechanism located on the left side;

[0021] Figure 3 for Figure 2 Schematic diagram of the structure of the middle fabric baffle;

[0022] Figure 4 for Figure 1 A schematic diagram of the lower feeding gate mechanism located on the right side of the center;

[0023] Figure 5 for Figure 4 A schematic diagram of the structure of the fabric baffle. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but these are not intended to limit the scope of the invention.

[0025] like Figures 1-5 As shown, this invention discloses a fixed feeding device for a double-chamber lime kiln. This fixed feeding device is installed above the kiln chamber 6 of the double-chamber lime kiln to feed material into the kiln chamber 6. Specifically, the fixed feeding device includes a kiln top hopper 1, an electro-hydraulic three-way distributor 2, an upper feeding gate mechanism 3, chutes 4, and a lower feeding gate mechanism 5. The kiln top hopper 1 is connected to two chutes 4 via the electro-hydraulic three-way distributor 2, and an upper feeding gate mechanism 3 is provided at the connection point between each of the two chutes 4 and the electro-hydraulic three-way distributor 2. A lower feeding gate mechanism 5 is provided between each chute 4 and the kiln chamber 6. The lower feeding gate mechanism 5 includes a housing 51, a lower feeding gate 52 installed on the housing 51, and a feeding baffle installed inside the housing 51. 53. The outer shell 51 is cuboid in shape. The material distribution baffle 53 is fixedly installed on the inner wall of the side wall of the outer shell 51 near the corner of the chute 4. The side of the material distribution baffle 53 facing the feeding direction of the lower feeding gate 52 is an inclined surface 533. The inclined surface 533 slopes from top to bottom towards the center of the outer shell 51, and the angle between the inclined surface 533 and the inner wall is 2 to 4°. Due to the blocking effect of the inclined surface 533 of the material distribution baffle 53, the falling trajectory of the stone can be changed, so that the stone can fall to the center point of the kiln chamber 6, thereby ensuring that the particle size distribution of the material is uniform and the surface of the material is flat. It ensures that the airflow and pressure in the kiln are stable and the cross-section is heated evenly, avoiding the risk of lime nodule formation and under-burning, thereby improving the quality of the finished limestone.

[0026] In a preferred embodiment of the present invention, the fabric baffle 53 is a right-angled triangular plate, which includes a horizontal surface 532, a vertical surface 531 and an inclined surface 533. The vertical surface 531 of the right-angled triangular plate is disposed close to the side wall of the outer shell 51, and the horizontal surface 532 of the right-angled triangular plate is disposed at the bottom of the outer shell 51. Preferably, the width of the horizontal surface 532 of the right-angled triangular plate is 40 to 60 mm (e.g., 40 mm, 50 mm, 55 mm or 60 mm, etc.).

[0027] In a preferred embodiment of the present invention, the vertical surface 531 of the fabric baffle 53 is welded to the outer shell 51 to achieve a stable connection between the fabric baffle 53 and the outer shell 51. Of course, in other embodiments of the present invention, the vertical surface 531 of the fabric baffle 53 can also be detachably fixed to the outer shell 51 by bolts for easy disassembly.

[0028] In a preferred embodiment of the present invention, the area of ​​the vertical surface 531 of the fabric baffle 53 is equal to the inner wall area of ​​the side wall of the left and right side walls of the outer shell 51 that is adjacent to the corner of the chute 4, so as to achieve full coverage of the side wall by the fabric baffle 53, thereby achieving a better uniform fabric distribution effect.

[0029] In a preferred embodiment of the present invention, the fabric baffle 53 is welded from steel plates. Specifically, the right-angled triangular plate is welded from three steel plates, and the thickness of the steel plates is 8 to 12 mm (e.g., 8 mm, 10 mm, 11 mm or 12 mm).

[0030] In a preferred embodiment of the present invention, the feeding gate is an electro-hydraulic jaw gate.

[0031] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the essence of the present invention, and will not be elaborated here either.

[0032] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention's technical solutions still fall within the protection scope of the present invention.

Claims

1. A fixed feeding device for a double-chamber lime kiln, the fixed feeding device being disposed above the kiln chamber of the double-chamber lime kiln to feed material into the kiln chamber, characterized in that, The fixed feeding device includes a kiln top hopper, an electro-hydraulic three-way feeder, an upper feeding gate mechanism, a chute, and a lower feeding gate mechanism; The kiln top hopper is connected to the two chutes via the electro-hydraulic three-way distributor, and each of the two chutes is provided with an upper feeding gate mechanism at the connection point between it and the electro-hydraulic three-way distributor. Each of the chutes and the kiln chamber is provided with a lower feeding gate mechanism. The lower feeding gate mechanism includes a shell, a lower feeding gate installed on the shell, and a material distribution baffle disposed inside the shell. The shell is cuboid in shape. The material distribution baffle is fixedly disposed on the inner wall of the side wall of the left and right sides of the shell, near the corner of the chute. The side of the material distribution baffle facing the feeding direction of the lower feeding gate is an inclined surface that slopes from top to bottom toward the center of the shell, and the angle between the inclined surface and the inner wall is 2 to 4°. The fabric baffle is a right-angled triangle, which includes a horizontal plane, a vertical plane, and an inclined plane. The vertical plane of the right-angled triangle is closely attached to the side wall of the outer shell, and the horizontal plane of the right-angled triangle is located at the bottom of the outer shell. The angle between the vertical plane and the inclined plane of the right-angled triangle is 2 to 4°. The area of ​​the vertical surface of the fabric baffle is equal to the area of ​​the inner wall of the side wall of the left and right side walls of the outer shell that is located near the corner of the chute.

2. The fixed feeding device for a double-chamber lime kiln as described in claim 1, characterized in that, The width of the horizontal plane of the right-angled triangular plate is 40-60 mm.

3. The fixed feeding device for a double-chamber lime kiln as described in claim 1, characterized in that, The vertical surface of the fabric baffle is welded to the outer shell.

4. The fixed feeding device for a double-chamber lime kiln as described in claim 1, characterized in that, The vertical surface of the fabric baffle is detachably fixed to the outer casing.

5. The fixed feeding device for a double-chamber lime kiln as described in claim 4, characterized in that, The vertical surface of the fabric baffle is fixed to the outer casing by bolts.

6. The fixed feeding device for a double-chamber lime kiln as described in claim 1, characterized in that, The fabric baffle is welded from steel plates.

7. The fixed feeding device for a double-chamber lime kiln as described in claim 6, characterized in that, The thickness of the steel plate is 8-12 mm.

8. The fixed feeding device for a double-chamber lime kiln as described in claim 1, characterized in that, The feeding gate is an electro-hydraulic jaw gate.

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