Low-emission pipeline of sand casting metallurgical furnace

Abstract

The utility model discloses a sand casting metallurgical furnace low-emission pipeline, which comprises a furnace body, an emission pipeline and a wet dust collector, the bottom of the furnace body is provided with the emission pipeline, the outer side of the emission pipeline is provided with the wet dust collector, and the emission pipeline comprises a pipeline body, a coarse filter screen, a filter channel, a fine filter screen and an activated carbon layer. According to the low-emission pipeline of the sand casting metallurgical furnace, waste gas is filtered for the first time through the coarse filter screen, after remaining waste gas penetrates through the coarse filter screen, harmful particles in the waste gas are captured by liquid in the wet dust collector, enter the sedimentation tank along with the liquid to be settled, the harmful particles are intercepted below by the blocking net, and clean liquid above the blocking net is pumped by the water pump; the waste gas passes through the circulating pipe and then is put into the wet dust collector again for use, after the waste gas is filtered by the wet dust collector, residual harmful particles in the waste gas are filtered by the fine filter screen, and after the harmful gas is filtered by the activated carbon layer, the waste gas is discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical furnaces, in particular to a low-emission pipeline for a sand casting metallurgical furnace. Background Art

[0002] Sand casting metallurgical furnaces are used in the metallurgical industry to smelt metal ores, refine metals, etc., which will generate a large amount of waste gas for emission. In the existing technology, the waste gas is usually filtered before being discharged to the outside.

[0003] However, in the actual emission process, it is found that the exhaust gas generated in the metallurgical furnace contains a large amount of harmful gases and harmful particles floating with the exhaust gas. Using a single filter to filter the exhaust gas cannot achieve dual filtration of harmful gases and harmful particles. Utility Model Content

[0004] The utility model aims to provide a low-emission pipeline for a sand casting metallurgical furnace to solve the problem that the background technology proposed above adopts a single filter screen to filter the exhaust gas, and cannot achieve dual filtering of harmful gases and harmful particles.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-emission pipeline of a sand casting metallurgical furnace, comprising a furnace body, an emission pipeline and a wet dust collector, wherein the bottom of the furnace body is provided with an emission pipeline, the outer side of the emission pipeline is provided with a wet dust collector, the emission pipeline comprises a pipeline body, a coarse filter, a filter channel, a fine filter and an activated carbon layer, the end of the pipeline body close to the furnace body is provided with a coarse filter, the pipeline body on the side of the coarse filter away from the furnace body is provided with a filter channel, the side of the filter channel away from the coarse filter is provided with a fine filter, and the side of the fine filter away from the filter channel is provided with an activated carbon layer;

[0006] A sedimentation tank is provided at one side of the wet dust collector, and a barrier net is provided inside the sedimentation tank.

[0007] Preferably, a water pump is provided on the top of the sedimentation tank, a circulation pipe is fixedly connected to the top of the water pump, and one end of the circulation pipe away from the water pump is installed on the wet dust collector.

[0008] Preferably, the connecting pipe is located below the barrier net, and the extraction pipe at the bottom of the water pump is attached to the top of the barrier net.

[0009] Preferably, the coarse filter, the fine filter and the activated carbon layer are all inserted into the pipeline body.

[0010] Preferably, the wet dust collector is installed on the filtering channel, and a connecting pipe is provided between the wet dust collector and the sedimentation tank.

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

[0012] The utility model discloses a low-emission pipeline for a sand casting metallurgical furnace, which can fully filter the waste gas generated by the sand casting metallurgical furnace in the metallurgical process by means of a coarse filter, a wet dust collector, a fine filter, an activated carbon layer and other multi-layer filtering methods, thereby reducing the emission of harmful gases and harmful particles in the waste gas;

[0013] The harmful particles in the exhaust gas are captured by the wet dust collector and carried into the sedimentation tank, and the liquid in the sedimentation tank is filtered and recycled, reducing the cost of removing harmful particles in the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the utility model as a whole;

[0015] Figure 2 It is a cross-sectional view of the discharge pipeline of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the wet dust collector of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the sedimentation tank of the utility model.

[0018] In the figure: 1. furnace body; 2. discharge pipe; 21. pipe body; 22. coarse filter; 23. filter channel; 24. fine filter; 25. activated carbon layer; 3. wet dust collector; 31. connecting pipe; 32. sedimentation tank; 33. barrier net; 34. water pump; 35. circulation pipe. 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 implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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] See also Figure 1-4A low-emission pipeline for a sand casting metallurgical furnace comprises a furnace body 1, an emission pipeline 2 and a wet dust collector 3. The bottom of the furnace body 1 is provided with an emission pipeline 2, and the exhaust gas generated by the furnace body 1 is discharged to the emission pipeline 2. The outer side of the emission pipeline 2 is provided with a wet dust collector 3. The emission pipeline 2 comprises a pipeline body 21, a coarse filter 22, a filter channel 23, a fine filter 24 and an activated carbon layer 25. The coarse filter 22 is provided at one end of the pipeline body 21 close to the furnace body 1, and a filter channel 23 is provided on the pipeline body 21 on the side of the coarse filter 22 away from the furnace body 1, and a fine filter 24 is provided on the side of the filter channel 23 away from the coarse filter 22. An activated carbon layer 25 is provided on the side of the fine filter 24 away from the filter channel 23. The coarse filter 22 performs the first filtration on the exhaust gas to intercept the large particles of impurities in the exhaust gas. The wet dust collector 3 captures and collects harmful particles in the exhaust gas. After the exhaust gas is filtered by the wet dust collector 3, the fine filter 24 filters the remaining harmful particles in the exhaust gas. After the harmful gas is filtered at multiple levels by the activated carbon layer 25, it is discharged. A sedimentation tank 32 is provided on one side of the wet dust collector 3. A blocking net 33 is provided inside the sedimentation tank 32. The blocking net 33 blocks the harmful particles in the sedimentation tank 32.

[0021] Furthermore, a water pump 34 is provided at the top of the sedimentation tank 32, and a circulation pipe 35 is fixedly connected to the top of the water pump 34. The end of the circulation pipe 35 away from the water pump 34 is installed on the wet dust collector 3. After the exhaust gas passes through the coarse filter 22, the harmful particles in the exhaust gas are captured by the liquid in the wet dust collector 3.

[0022] Furthermore, the connecting pipe 31 is located below the barrier net 33, and the extraction pipe at the bottom of the water pump 34 is attached to the top of the barrier net 33. The harmful particles are intercepted below by the barrier net 33, and the water pump 34 extracts clean liquid above the barrier net 33.

[0023] Furthermore, the coarse filter 22, the fine filter 24 and the activated carbon layer 25 are all inserted into the pipe body 21. When the coarse filter 22, the fine filter 24 and the activated carbon layer 25 are clogged due to long-term filtration, they can be removed from the pipe body 21 and replaced.

[0024] Furthermore, the wet dust collector 3 is installed on the filtering channel 23 , and a connecting pipe 31 is provided between the wet dust collector 3 and the sedimentation tank 32 , and the harmful particulate matter captured and collected by the wet dust collector 3 is transported from the connecting pipe 31 to the sedimentation tank 32 .

[0025] Working principle: The utility model is a low-emission pipeline for a sand casting metallurgical furnace. When in use, the exhaust gas generated by the furnace body 1 is discharged to the exhaust pipe 2, and the coarse filter 22 performs the first filtering on the exhaust gas to intercept the large particles of impurities in the exhaust gas. After the remaining exhaust gas passes through the coarse filter 22, the harmful particles in the exhaust gas are captured by the liquid in the wet dust collector 3, and enter the sedimentation tank 32 with the liquid to precipitate, and the harmful particles are intercepted below by the blocking net 33, and the water pump 34 extracts the clean liquid above the blocking net 33, passes through the circulation pipe 35, and then re-enters the wet dust collector 3 for use. After the exhaust gas is filtered by the wet dust collector 3, the fine filter 24 filters the remaining harmful particles in the exhaust gas, and after filtering the harmful gas through the activated carbon layer 25, it is discharged.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-emission pipeline for a sand casting metallurgical furnace, comprising a furnace body (1), an emission pipeline (2) and a wet dust collector (3), wherein the bottom of the furnace body (1) is provided with an emission pipeline (2), and the outer side of the emission pipeline (2) is provided with a wet dust collector (3), characterized in that: The discharge pipe (2) comprises a pipe body (21), a coarse filter (22), a filter channel (23), a fine filter (24) and an activated carbon layer (25); the coarse filter (22) is provided at one end of the pipe body (21) close to the furnace body (1); a filter channel (23) is provided on the pipe body (21) at a side of the coarse filter (22) away from the furnace body (1); a fine filter (24) is provided on a side of the filter channel (23) away from the coarse filter (22); and an activated carbon layer (25) is provided on a side of the fine filter (24) away from the filter channel (23); A sedimentation tank (32) is provided on one side of the wet dust collector (3), and a barrier net (33) is provided inside the sedimentation tank (32).

2. A low-emission pipeline for a sand casting metallurgical furnace according to claim 1, characterized in that: A water pump (34) is provided on the top of the sedimentation tank (32), a circulation pipe (35) is fixedly connected to the top of the water pump (34), and one end of the circulation pipe (35) away from the water pump (34) is mounted on the wet dust collector (3).

3. A low-emission pipeline for a sand casting metallurgical furnace according to claim 2, characterized in that: The communication pipe (31) is located below the barrier net (33), and the extraction pipe at the bottom of the water pump (34) is attached to the top of the barrier net (33).

4. The low-emission pipeline for a sand casting metallurgical furnace according to claim 1, characterized in that: The coarse filter (22), the fine filter (24) and the activated carbon layer (25) are all inserted into the pipeline body (21).

5. The low-emission pipeline for a sand casting metallurgical furnace according to claim 1, characterized in that: The wet dust collector (3) is installed on the filtering channel (23), and a connecting pipe (31) is provided between the wet dust collector (3) and the sedimentation tank (32).

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