Feeding assembly of rotary kiln

Abstract

The feeding assembly of the rotary kiln comprises a feeding shell and a connecting shell, the feeding shell is fixedly connected with the connecting shell, an inner cavity of the feeding shell is communicated with an inner cavity of the connecting shell, an auxiliary heating mechanism is assembled in the inner cavity of the connecting shell, and a smoke recycling mechanism is fixedly assembled on the side wall of the connecting shell. Before materials enter the rotary kiln, the materials can be preheated through the auxiliary heating mechanism in the connecting shell, the temperature of the materials entering the rotary kiln is increased, and therefore the material roasting efficiency of the rotary kiln and the product quality of generated products are improved; the heat energy for preheating the materials by the auxiliary heating mechanism is mainly realized through the high-temperature flue gas in the flue gas recovery mechanism, so that the heat energy in the high-temperature flue gas can be utilized while the materials are preheated, the aim of recycling resources is fulfilled, and the energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kilns, in particular to a feeding component of a rotary kiln. Background Art

[0002] A rotary kiln is a device that heats materials through a rotating cylinder. Inside is a continuously rotating cylinder, in which the raw materials undergo physical changes and chemical reactions at high temperatures, and are ultimately converted into the desired products. Rotary kilns are widely used in many fields such as building materials, metallurgy, and chemical industry, and are an indispensable part of industrial production. During the iron ore powder pelletizing and sintering process, the rotary kiln can provide a stable high-temperature environment, promote the consolidation and reduction reactions of the iron ore powder, and improve the utilization rate of the iron ore powder and the quality of the product. Most existing rotary kilns use a method of directly feeding the material from the silo into the rotary kiln during use. The material in the silo is directly put into the rotary kiln in this way. Since the temperature of the material entering the rotary kiln may be relatively low, the lower temperature of the material in the subsequent roasting process of the rotary kiln will not only affect the roasting efficiency of the rotary kiln, but also affect the quality of the product after roasting in the rotary kiln. To this end, we propose a feeding component for a rotary kiln. Utility Model Content

[0003] The purpose of the utility model is to provide a feeding assembly for a rotary kiln to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a feed assembly for a rotary kiln, comprising a feed shell and a connecting shell, wherein the feed shell and the connecting shell are fixedly connected, the inner cavities of the feed shell and the connecting shell are in communication, the inner cavity of the connecting shell is equipped with an auxiliary heating mechanism, and the side wall of the connecting shell is fixedly equipped with a fume recovery mechanism;

[0005] The auxiliary heating mechanism includes a rotating shaft, which is rotatably connected to the inner cavity of the connecting shell. The side wall of the rotating shaft is evenly and fixedly equipped with heat exchange plates in a circumferential manner. One end of the rotating shaft is fixedly connected to the drive motor, and the other end of the rotating shaft is fixedly connected to the heat exchange component.

[0006] Preferably, buffer blocks are evenly and fixedly mounted on the side walls of the heat exchange plates.

[0007] Preferably, the heat exchange assembly includes a heat exchange shaft, which is fixedly connected to the end of the rotating shaft. The side wall of the heat exchange shaft is evenly fixedly equipped with a heat exchange frame, and the heat exchange body is evenly fixedly equipped inside the heat exchange frame.

[0008] Preferably, the flue gas recovery mechanism includes a recovery shell, the recovery shell is fixedly connected to the side wall of the connecting shell, the bottom of the recovery shell is fixedly connected to a flue gas recovery pipe, the top of the recovery shell is fixedly connected to a flue gas connecting pipe, and a fan is fixedly installed in the flue gas connecting pipe.

[0009] Preferably, the number of the fans is at least two groups.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: a feed assembly of a rotary kiln, a feed shell and a connecting shell are arranged between the hopper and the rotary kiln, and before the material enters the rotary kiln, the material can be preheated by the auxiliary heating mechanism in the connecting shell, thereby increasing the temperature of the material entering the rotary kiln, thereby improving the roasting efficiency of the rotary kiln for the material and the product quality of the generated product; at the same time, a flue gas recovery mechanism is provided in the device, and the heat energy used by the auxiliary heating mechanism to preheat the material is mainly realized by the high-temperature flue gas in the flue gas recovery mechanism, and while achieving the purpose of preheating the material, the heat energy in the high-temperature flue gas can also be utilized, thereby achieving the purpose of resource recovery and reuse and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the present utility model.

[0012] Figure 2 It is a structural diagram of the present utility model.

[0013] Figure 3 This is a schematic structural diagram of the heat exchange plate of the present utility model.

[0014] Figure 4 This is a schematic structural diagram of the heat exchange component of the present utility model.

[0015] Figure 5 This is a structural diagram of the smoke recovery mechanism of the utility model.

[0016] In the figure: 1. Feed shell, 2. Connecting shell, 3. Auxiliary heating mechanism, 31. Rotating shaft, 32. Heat exchange plate, 33. Drive motor, 34. Buffer block, 4. Heat exchange assembly, 41. Heat exchange shaft, 42. Heat exchange frame, 43. Heat exchange body, 5. Flue gas recovery mechanism, 51. Flue gas recovery pipe, 52. Recovery shell, 53. Flue gas connecting pipe, 54. Fan. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4and Figure 5 The utility model provides a technical solution: a feeding assembly of a rotary kiln, comprising a feeding shell 1, a connecting shell 2 fixedly connected to the top of the feeding shell 1, the connecting shell 2 is used to connect with the discharge of the silo, the inner cavity of the feeding shell 1 is connected with the feeding port of the rotary kiln, and the material enters the connecting shell 2 after coming out of the silo, and is fed to the feeding port of the rotary kiln through the connecting shell 2 and the inner cavity of the feeding shell 1. The inner cavity of the connecting shell 2 is equipped with an auxiliary heating mechanism 3, and the auxiliary heating mechanism 3 is provided to heat the material entering the connecting shell 2, which can temporarily increase the temperature of the material, so that the material can be more fully roasted in the rotary kiln when it subsequently enters the rotary kiln, thereby improving the roasting efficiency of the material.

[0019] like Figure 2 and Figure 3 As shown in the figure, the auxiliary heating mechanism 3 includes a rotating shaft 31, which is rotatably connected to the inner cavity of the connecting shell 2, and a heat exchange plate 32 is fixedly connected to the side wall of the rotating shaft 31. There are four heat exchange plates 32, and the four heat exchange plates 32 are evenly distributed circumferentially around the axis of the rotating shaft 31. One end of the rotating shaft 31 is fixedly connected to a drive motor 33, and the drive motor 33 is electrically connected to an external power supply. The drive motor 33 is embedded in the side wall of the connecting shell 2, and the rotating shaft 31 is driven by the drive motor 33 to rotate, so that the material falling onto the surface of the heat exchange plate 32 can be intermittently discharged through the connecting shell 2. When the material passes through the heat exchange plate 32, it is preheated by the heat exchange plate 32. The other end of the rotating shaft 31 is fixedly equipped with a heat exchange component 4, and heat is transferred to the heat exchange plate 32 by setting the heat exchange component 4.

[0020] like Figure 3 As shown in the figure, the surface of the heat exchange plate 32 is uniformly and integrally formed with a buffer block 34. By setting the buffer block 34, the speed of the material passing through the heat exchange plate 32 can be slowed down, the contact time between the heat exchange plate 32 and the material can be increased, and the material passing through the surface of the heat exchange plate 32 can be better preheated.

[0021] like Figure 1 and Figure 5As shown in the figure, the heat exchange component 4 is fixedly assembled in the flue gas recovery mechanism 5, and the flue gas recovery mechanism 5 includes a flue gas recovery pipe 51, a recovery shell 52 and a flue gas connecting pipe 53. One end of the flue gas recovery pipe 51 is connected to the shell at the discharge port of the rotary kiln, and the other end of the flue gas recovery pipe 51 is fixedly connected to the recovery shell 52. The recovery shell 52 is fixedly assembled on the side wall of the connecting shell 2, and the side wall of the recovery shell 52 is fixedly connected to one end of the flue gas connecting pipe 53. The other end of the flue gas connecting pipe 53 is fixedly connected to the external flue gas purification equipment. The connecting pipe 53 is fixed to the side wall of the connecting shell 2 by a clamping frame. A fan 54 is fixedly installed in the flue gas connecting pipe 53. The fan 54 is electrically connected to an external power supply. The fan 54 is a high-temperature resistant fan. The air is driven by the fan 54 to flow, and the high-temperature flue gas in the rotary kiln is recovered into the recovery shell 52. The heat exchange component 4 located in the recovery shell 52 is heated, so that the heat exchange component 4 heats the heat exchange plate 32. The number of fans 54 is at least two groups. Setting two groups of fans 54 can enhance the effect of flue gas recovery.

[0022] like Figure 4 As shown in the figure, the heat exchange assembly 4 includes a heat exchange shaft 41, which is fixedly connected to the end of the rotating shaft 31. The side wall of the heat exchange shaft 41 is welded with a heat exchange frame 42 evenly distributed in a circumference, and a heat exchange body 43 is evenly fixedly assembled in the heat exchange frame 42. The heat exchange shaft 41, the heat exchange frame 42 and the heat exchange body 43 are all cast with a metal material that is easy to conduct heat. The heat exchange frame 42 and the heat exchange body 43 can be rotated through the heat exchange shaft 41 and the rotating shaft 31. When the flue gas passes through the inner cavity of the recovery shell 52, it can fully absorb heat through the heat exchange body 43 and transfer heat to the heat exchange plate 32.

[0023] Working principle: Compared with the traditional rotary kiln feeding equipment, this device is equipped with an auxiliary heating mechanism 3. Through the circulating rotation of the heat exchange plate 32 in the auxiliary heating mechanism 3, the material entering the rotary kiln can be preheated, which is convenient for the subsequent roasting of the material in the rotary kiln and can improve the roasting product quality and roasting efficiency. The heat exchange plate 32 is heated by the heat exchange component 4. The heat exchange component 4 raises the temperature in the recovery shell 52 through the recovered flue gas, thereby realizing the recovery and reuse of the heat energy of the flue gas in the rotary kiln and saving energy.

Claims

1. A feed assembly for a rotary kiln, comprising a feed shell (1) and a connecting shell (2), characterized in that: The feed shell (1) and the connecting shell (2) are fixedly connected, the inner cavities of the feed shell (1) and the connecting shell (2) are in communication, the inner cavity of the connecting shell (2) is equipped with an auxiliary heating mechanism (3), and the side wall of the connecting shell (2) is fixedly equipped with a smoke recovery mechanism (5); The auxiliary heating mechanism (3) comprises a rotating shaft (31), the rotating shaft (31) being rotatably connected to the inner cavity of the connecting shell (2), the side wall of the rotating shaft (31) being evenly and fixedly equipped with heat exchange plates (32) in a circumferential manner, one end of the rotating shaft (31) being fixedly connected to a drive motor (33), and the other end of the rotating shaft (31) being fixedly connected to a heat exchange component (4).

2. A rotary kiln feed assembly according to claim 1, characterized in that: Buffer blocks (34) are evenly and fixedly mounted on the side walls of the heat exchange plates (32).

3. The feed assembly of a rotary kiln according to claim 1, characterized in that: The heat exchange assembly (4) comprises a heat exchange shaft (41), the heat exchange shaft (41) being fixedly connected to the end of the rotating shaft (31), a heat exchange frame (42) being evenly fixedly mounted on the side wall of the heat exchange shaft (41), and a heat exchange body (43) being evenly fixedly mounted inside the heat exchange frame (42).

4. The feed assembly of a rotary kiln according to claim 1, characterized in that: The smoke recovery mechanism (5) comprises a recovery shell (52), the recovery shell (52) is fixedly connected to the side wall of the connecting shell (2), the bottom of the recovery shell (52) is fixedly connected to a smoke recovery pipe (51), the top of the recovery shell (52) is fixedly connected to a smoke connecting pipe (53), and a fan (54) is fixedly installed in the smoke connecting pipe (53).

5. The feed assembly of a rotary kiln according to claim 4, characterized in that: The number of the fans (54) is at least two groups.

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