Belt type roasting machine and multi-channel smoke hood device thereof

Abstract

The utility model provides a belt type roasting machine and a multi-channel smoke hood device thereof. The multi-channel smoke hood device of the belt type roasting machine comprises a first cooling smoke hood located above the front section of a first cooling section of the roasting machine, a second cooling smoke hood located above the rear section of the first cooling section of the roasting machine, a high-temperature flue communicated with the second cooling smoke hood and a medium-temperature flue communicated with the first cooling smoke hood. The medium-temperature flue is communicated with a hearth of a preheating section of the roasting machine through a medium-temperature air branch pipe, and the high-temperature flue is communicated with a hearth of a roasting section of the roasting machine through a high-temperature branch pipe. According to the multi-channel smoke hood device, high-temperature hot air and medium-temperature hot air are conveyed through the smoke hood in a partitioned mode, and the high-temperature hot air is connected with the roasting section, so that the hearth temperature of the roasting section is increased, fuel consumption is reduced, and the smoke discharge amount is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of roasting machine structures, and particularly relates to a traveling grate roasting machine and a multi-channel hood device thereof. Background Art

[0002] At present, in the production process of a traveling grate roasting machine, the following structure is adopted. Figure 1 As shown, the atmospheric cold air blown into the first cooling section passes through the material layer for heat exchange, and then the temperature rises. The hot air converges through the hood above the first cooling section. The hood is connected to the furnaces of the preheating section and the roasting section respectively through hot air branch pipes. The suction force is provided by the bottom air box to introduce the hot air into the soaking section, the preheating section and the roasting section. Burners are also installed on the hot air branch pipes of the preheating section and the roasting section to supplement heat, and the hot air branch pipes provide the combustion-supporting air required for combustion.

[0003] However, since the air temperature in the first cooling section gradually decreases, the average air temperature after mixing is about 800-900°C, and the hot air is excessive. In order to ensure the temperature required for the roasting process, more high-calorific value fuel needs to be consumed to increase the furnace temperature. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a traveling grate roasting machine and a multi-channel hood device thereof, aiming to increase the furnace temperature of the traveling grate roasting machine without increasing fuel consumption.

[0005] To achieve the above purpose, the utility model provides a multi-channel hood device for a traveling grate roasting machine, which includes a first cooling hood located above the front section of the first cooling section of the roasting machine, a second cooling hood located above the rear section of the first cooling section of the roasting machine, a high-temperature flue connected to the second cooling hood, and a medium-temperature flue connected to the first cooling hood. Among them,

[0006] The medium-temperature flue is connected to the furnace of the preheating section of the roasting machine through a medium-temperature air branch pipe, and the high-temperature flue is connected to the furnace of the roasting section of the roasting machine through a high-temperature branch pipe.

[0007] Preferably, there are two medium-temperature flues, and the two medium-temperature flues are located on both sides above the high-temperature flue.

[0008] Preferably, the medium-temperature flue includes a horizontal pipe, a reducing pipe and a medium-temperature reducing pipe arranged in sequence. The medium-temperature reducing pipe is connected to the medium-temperature air branch pipe, and the horizontal pipes of the two medium-temperature flues are connected to the first cooling hood through a tee pipe.

[0009] Preferably, a plurality of herringbone high-temperature branch pipes are arranged below the high-temperature flue.

[0010] Preferably, the plurality of high-temperature branch pipes are evenly arranged below the high-temperature flue.

[0011] Preferably, a plurality of vertically arranged medium-temperature air branch pipes are provided below the medium-temperature flue.

[0012] Preferably, the plurality of medium-temperature air branch pipes are uniformly arranged below the medium-temperature flue.

[0013] Preferably, the high-temperature flue is a high-temperature special-shaped pipe.

[0014] The present utility model further provides a traveling grate, which includes the multi-channel hood device of the traveling grate as described above, and further includes a first cooling section, a soaking section, a roasting section, and a preheating section arranged in sequence. The first cooling section includes a front part of the first cooling section and a rear part of the first cooling section, and a partition wall is arranged between the front part of the first cooling section and the rear part of the first cooling section.

[0015] Preferably, a partition wall is arranged between the soaking section and the roasting section.

[0016] For the traveling grate provided by the present utility model, high-temperature and medium-temperature hot air are transported through hood zoning. The high-temperature hot air is connected to the roasting section, thereby increasing the furnace temperature of the roasting section, reducing fuel consumption, and reducing flue gas emissions. At the same time, the traveling grate of the present utility model has a simple structure and is easy to implement. In addition, the medium-temperature hot air is divided into two rows and connected to the preheating section, optimizing the flow field in the furnace; the hot air pipeline is horizontally arranged, which can effectively reduce the equipment height, reduce the civil engineering cost of the plant, and is reliable in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of a traveling grate in the prior art;

[0018] Figure 2 is a front view structural schematic diagram of a preferred embodiment of the traveling grate of the present utility model;

[0019] Figure 3 is a top view structural schematic diagram of a preferred embodiment of the traveling grate of the present utility model;

[0020] Figure 4 is a right view structural schematic diagram of a preferred embodiment of the traveling grate of the present utility model;

[0021] Figure 5 is Figure 2 a sectional structural schematic diagram in the A-A direction shown.

[0022] In the figure, 1 - the first cooling section, 101 - the front part of the first cooling section, 102 - the rear part of the first cooling section, 2 - the soaking section, 3 - the roasting section, 4 - the preheating section, 5 - the partition wall, 6 - the first cooling hood, 7 - the three-way pipe, 8 - the horizontal pipe, 9 - the reducing pipe, 10 - the medium-temperature reducing pipe, 11 - the medium-temperature air branch pipe, 12 - the second cooling hood, 13 - the high-temperature reducing pipe, 14 - the high-temperature branch pipe, 15 - the air box, 16 - the furnace.

[0023] The realization, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0024] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] Referring to Figures 2 to 5 , the present utility model provides a traveling grate stoker, which includes a multi-channel hood device, and further includes a first cooling section, a soaking section 2, a roasting section 3 and a preheating section 4 arranged in sequence. The first cooling section includes a front section 101 of the first cooling section and a rear section 102 of the first cooling section. A partition wall 5 is arranged between the front section 101 of the first cooling section and the rear section 102 of the first cooling section. The multi-channel hood device includes a first cooling hood 6 located above the front section 101 of the first cooling section of the traveling grate stoker, a second cooling hood 12 located above the rear section 102 of the first cooling section of the traveling grate stoker, a high-temperature flue connected to the second cooling hood 12, and a medium-temperature flue connected to the first cooling hood 6. Among them,

[0027] the medium-temperature flue is communicated with the furnace chamber of the preheating section 4 of the traveling grate stoker through a medium-temperature air branch pipe 11, and the high-temperature flue is communicated with the furnace chamber of the roasting section 3 of the traveling grate stoker through a high-temperature branch pipe 14.

[0028] Further, referring to Figure 2 , a partition wall 5 is arranged between the soaking section 2 and the roasting section 3 to prevent air leakage in the furnace chamber.

[0029] In this embodiment, referring to Figure 3 , there are two medium-temperature flues, and the two medium-temperature flues are located on both sides above the high-temperature flue, so that the three form a three-channel structure. On the one hand, the equipment height can be effectively reduced. In addition, the air flow distribution in the preheating section 4 is more uniform.

[0030] Specifically, in this embodiment, referring to Figure 2 and Figure 3, the medium-temperature flue includes a horizontally arranged pipe 8, a reducing pipe 9, and a medium-temperature reducing pipe 10 arranged in sequence. The medium-temperature reducing pipe 10 is communicated with the medium-temperature air branch pipe 11. The horizontally arranged pipes 8 of the two medium-temperature flues are communicated with the first cooling hood 6 through a tee pipe 7. The outlet of the tee pipe 7 is connected to two horizontally arranged pipes 8, dividing the hot air from the first cooling hood 6 into two rows.

[0031] Further, referring to Figure 5 , a plurality of herringbone-shaped high-temperature branch pipes 14 are arranged below the high-temperature flue. The plurality of high-temperature branch pipes 14 are evenly arranged below the high-temperature flue, so as to ensure that the hot air is evenly sent to the furnace chamber of the roasting section 3 of the roasting machine.

[0032] Under the suction of the air box 15, a part of the hot air enters the furnace chamber of the soaking section 2, and the remaining hot air enters the furnace chamber of the roasting section 3 from both sides through the high-temperature reducing pipe 13 to participate in the roasting and combustion reactions.

[0033] Referring to Figure 4 , a plurality of vertically arranged medium-temperature air branch pipes 11 are arranged below the medium-temperature flue. The plurality of medium-temperature air branch pipes 11 are evenly arranged below the medium-temperature flue. The high-temperature flue is a high-temperature special-shaped pipe. Under the suction of the bottom air box 15, the hot air enters the furnace chamber from both sides through the medium-temperature reducing pipe 10 to participate in the reaction.

[0034] The belt roasting machine proposed in this embodiment transports high-temperature and medium-temperature hot air through hood zoning. The high-temperature hot air is connected to the roasting section 3, thereby increasing the furnace chamber temperature of the roasting section 3, reducing fuel consumption, and reducing flue gas emissions. At the same time, the structure of this belt roasting machine is simple and easy to implement. In addition, the medium-temperature hot air is divided into two rows and connected to the preheating section 4, optimizing the flow field in the furnace chamber; at the same time, the horizontal layout of the hot air pipeline can effectively reduce the equipment height, reduce the civil engineering cost of the workshop, and is reliable in use.

[0035] The present utility model further proposes a multi-channel hood device for a belt roasting machine.

[0036] In this preferred embodiment, a multi-channel hood device for a belt roasting machine includes a first cooling hood 6 located above the front section 101 of the first cooling section of the roasting machine, a second cooling hood 12 located above the rear section 102 of the first cooling section of the roasting machine, a high-temperature flue communicated with the second cooling hood 12, and a medium-temperature flue communicated with the first cooling hood 6. Among them, the medium-temperature flue is communicated with the furnace chamber of the preheating section 4 of the roasting machine through the medium-temperature air branch pipe 11, and the high-temperature flue is communicated with the furnace chamber of the roasting section 3 of the roasting machine through the high-temperature branch pipe 14.

[0037] Specifically, referring to Figure 3 , there are two medium-temperature flues, and the two medium-temperature flues are located on both sides above the high-temperature flue. Connecting the medium-temperature hot air in two rows to the preheating section 4 optimizes the flow field in the furnace chamber on the one hand;

[0038] Specifically, in this embodiment, the medium-temperature flue duct includes a horizontally arranged pipe 8, a reducing pipe 9, and a medium-temperature reducing pipe 10 arranged in sequence. The medium-temperature reducing pipe 10 is communicated with the medium-temperature air branch pipe 11. The horizontally arranged pipes 8 of the two medium-temperature flue ducts are communicated with the first cooling hood 6 through a tee pipe 7. The hot air pipeline includes the horizontal layout of the horizontally arranged pipe 8, which can effectively reduce the height of the equipment, reduce the civil engineering cost of the plant, and is reliable in use.

[0039] Specifically, in this embodiment, referring to Figure 5 , a plurality of herringbone-shaped high-temperature branch pipes 14 are arranged below the high-temperature flue duct. The plurality of high-temperature branch pipes 14 are uniformly arranged below the high-temperature flue duct. A plurality of vertically arranged medium-temperature air branch pipes 11 are arranged below the medium-temperature flue duct. The plurality of medium-temperature air branch pipes 11 are uniformly arranged below the medium-temperature flue duct. The high-temperature flue duct is a high-temperature special-shaped pipe.

[0040] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A multi-channel fume hood device for a belt roaster, characterized in that: It includes a first cooling hood located above the front section of the roasting machine cooling section, a second cooling hood located above the rear section of the roasting machine cooling section, a high-temperature flue connected to the second cooling hood, and a medium-temperature flue connected to the first cooling hood, wherein: The medium-temperature flue is connected to the furnace of the preheating section of the roaster through the medium-temperature wind branch pipe, and the high-temperature flue is connected to the furnace of the roasting section of the roaster through the high-temperature branch pipe.

2. The multi-channel fume hood device of the belt roaster according to claim 1, characterized in that: There are two medium-temperature flues, which are located on both sides above the high-temperature flue.

3. The multi-channel fume hood device of the belt roasting machine according to claim 2, characterized in that: The medium-temperature flue comprises a horizontal pipe, a reducer and a medium-temperature reducer arranged in sequence. The medium-temperature reducer is connected to the medium-temperature wind branch pipe. The horizontal pipes of the two medium-temperature flues are connected to the first cooling hood through a three-way pipe.

4. The multi-channel fume hood device of a belt roaster according to claim 1, characterized in that: A plurality of herringbone-shaped high-temperature branch pipes are arranged below the high-temperature flue.

5. The multi-channel fume hood device of the belt roasting machine according to claim 4, characterized in that: A plurality of high-temperature branch pipes are evenly arranged below the high-temperature flue.

6. The multi-channel fume hood device of a belt roaster according to claim 1, characterized in that: A plurality of vertically arranged medium-temperature air branch pipes are arranged below the medium-temperature flue.

7. The multi-channel fume hood device of a belt roaster according to claim 6, characterized in that: A plurality of medium-temperature air branch pipes are evenly arranged below the medium-temperature flue.

8. The multi-channel fume hood device of a belt roasting machine according to any one of claims 1 to 7, characterized in that: The high-temperature flue is a high-temperature special-shaped tube.

9. A belt roasting machine, characterized in that: A multi-channel smoke hood device for a belt roasting machine comprising any one of claims 1 to 8, further comprising a cooling section, a heat equalization section, a roasting section and a preheating section arranged in sequence, the cooling section comprising a cooling section front section and a cooling section rear section, a partition wall being arranged between the cooling section front section and the cooling section rear section.

10. The belt roasting machine according to claim 9, characterized in that: A partition wall is arranged between the soaking section and the roasting section.

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