Waste gas multi-stage purification device of combustion furnace

Abstract

The utility model relates to the technical field of waste gas purification, in particular to a multi-stage waste gas purification device of a combustion furnace, which comprises a dust removal box, a purification box and a filter box which are sequentially arranged from back to front, a plurality of straight pipes are installed on the outer wall of the transverse pipe, the straight pipes penetrate through the connecting frame and penetrate out of the purifying box, and nozzles are installed at the tail ends of the straight pipes; after being discharged through the combustion furnace, waste gas enters the dust removal box through the smoke inlet, dust removal treatment can be conducted on the waste gas under the action of the dust removal barrel, then the waste gas enters the purification box, the multiple spray heads spray water mist to conduct secondary treatment on the waste gas, and particulate matter and the like in the waste gas can be settled under the action of the water mist; then the waste gas subjected to secondary treatment enters a filter box, and the waste gas can be filtered again under the action of a plurality of activated carbon filter screens; according to the design, through the multi-type purification design, the filtering and purifying effects on waste gas exhausted by the combustion furnace can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas purification, in particular to a multi-stage waste gas purification device of a combustion furnace. Background Art

[0002] A combustion furnace is a device used to burn fuel to generate high temperature. It is widely used in many fields such as industry, metallurgy, chemical industry, and environmental protection. During the use of the combustion furnace, a large amount of exhaust gas will be generated due to combustion. This type of exhaust gas contains a large amount of pollutants. If it is directly discharged, it will cause damage to the atmospheric environment. Therefore, it is necessary to purify the exhaust gas from the combustion furnace.

[0003] The utility model patent with the authorization announcement number CN215027312U discloses a combustion furnace waste gas treatment device, which includes a treatment device body, a fixed support leg, an air inlet and an air outlet, wherein the fixed support leg is fixedly connected to the bottom of the treatment device body, the air inlet is connected to the lower side of the treatment device body, the air outlet is connected to the top of the treatment device body, a water pipe is arranged inside the treatment device body, a water mist nozzle is fixedly connected to the bottom of the water pipe, the water pipe is connected to a connecting rod, the connecting rod is connected to the inner wall of the treatment device body, one end of the water pipe is connected to a water pipe, one end of the water pipe is connected to the water pipe and the other end is connected to a water pump and a water tank in sequence, the water pump It is connected to the top of the treatment device body, the water tank is connected to the top of the treatment device body, the water tank is arranged on one side of the water pump, the air outlet is installed with an air filter, the bottom of the treatment device body is opened with a drain outlet, hanging rods are installed on both sides of the drain outlet, a filter plate is installed at the bottom of the hanging rod, and the inner wall of the filter plate is connected with a filter screen; the utility model treats solid particulate matter mixed in the combustion exhaust gas, and then uses water mist to spray and filter it. The annular water pipe and the surrounding water mist nozzles can fully spray and filter the exhaust gas, and the filtered impurities fall to the bottom of the treatment device with the water mist and are discharged. At the same time, the filter plate is arranged at the bottom of the drain outlet for re-filtration and collection to avoid secondary pollution of particulate matter.

[0004] Although the combustion furnace exhaust gas treatment device can purify the combustion furnace exhaust gas through spray filtration, this purification method still has the following problems when used: relying solely on the water mist spray method to remove pollutants such as particulate matter in the exhaust gas is limited, and it is difficult to achieve an ideal purification effect. The fine particles in the exhaust gas may escape the capture of the water mist and continue to float in the exhaust gas, causing potential harm to the environment after being discharged. In view of this, we propose a multi-stage exhaust gas purification device for the combustion furnace. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-stage exhaust gas purification device for a combustion furnace to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A multi-stage exhaust gas purification device for a combustion furnace, comprising a dust removal box, a purification box and a filter box arranged in sequence from the back to the front;

[0008] The dust collecting box has a hollow structure, and a smoke inlet is installed at the lower part of the rear side wall of the dust collecting box; a horizontal plate is fixed inside the dust collecting box, a through hole is opened in the center of the horizontal plate, and a dust collecting cylinder with an open top is rotatably installed at the through hole, and the outer wall of the dust collecting cylinder has a hollow structure, and a connecting shaft is coaxially fixed to the inner bottom of the dust collecting cylinder, and a motor for driving the connecting shaft to rotate is installed on the top of the dust collecting box; fixed plates are fixed to the inner walls of both sides of the dust collecting box, and a brush for cleaning the outer wall of the dust collecting cylinder is installed on one side wall of the fixed plate; two first connecting pipes for connecting to the purification box are also installed on the top of the dust collecting box;

[0009] The purification box has a hollow structure. A connecting frame is fixed on the inner top of the purification box. A main water pipe is fixed in the inner cavity of the connecting frame. The top of the main water pipe passes through the top of the purification box and passes out to the top of the purification box. A plurality of horizontal pipes are fixed on the outer wall of the main water pipe from top to bottom. A plurality of straight pipes are installed on the outer wall of the horizontal pipe. The straight pipes pass through the connecting frame and pass out into the purification box. A nozzle is installed at the end of the straight pipe. Two second connecting pipes for connecting to the filter box are installed on the top of the purification box.

[0010] The filter box has a hollow structure with a notch on the top and a removable top plate at the notch. A plurality of frames for inserting the filter box are fixed at the bottom of the top plate, and an activated carbon filter is fixed at the opening of the frame. An exhaust fan is installed at the front end of the filter box.

[0011] As a preferred technical solution of the utility model, the size of the notch is matched with the size of the top plate, and the top plate is fixedly connected to the filter box by bolts.

[0012] As a preferred technical solution of the utility model, a dust exhaust port is installed at the bottom of the dust removal box, a sealing cover is installed at the bottom of the dust exhaust port, and the sealing cover is threadedly connected to the dust exhaust port.

[0013] As a preferred technical solution of the utility model, a sewage pipe is installed at the bottom of the purification box, a valve is installed on the sewage pipe, and the valve is fixedly connected to the sewage pipe through a flange.

[0014] As a preferred technical solution of the utility model, the outer wall of the dust removal cylinder is coaxially keyed with two limit rings near the top, and the two limit rings are respectively located at the upper and lower sides of the horizontal plate.

[0015] As a preferred technical solution of the utility model, first support rods are installed at the four corners of the bottom of the dust removal box, and second support rods are installed at the four corners of the bottom of the filter box.

[0016] As a preferred technical solution of the utility model, the dust removal box is fixedly connected to the purification box by bolts, and the filter box is fixedly connected to the purification box by bolts.

[0017] As a preferred technical solution of the utility model, the connecting frame is fixedly connected to the purification box by bolts, and the overall shape of the connecting frame is U-shaped.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] By setting up a dust removal box, a purification box and a filter box: after the exhaust gas is discharged from the combustion furnace, it enters the dust removal box through the smoke inlet. Under the action of the dust removal cylinder, the exhaust gas can be dusted, and then the exhaust gas enters the purification box, and multiple nozzles spray water mist to perform secondary treatment on the exhaust gas. Under the action of water mist, the particulate matter in the exhaust gas can be settled, and then the exhaust gas after the secondary treatment enters the filter box, and under the action of multiple activated carbon filters, the exhaust gas can be filtered again. This design can improve the filtering and purification effect of the exhaust gas discharged from the combustion furnace through a multiple purification design. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0022] Figure 3 It is a structural cross-sectional view of part of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the dust removal cylinder in the utility model;

[0024] Figure 5 It is a partial structural schematic diagram of the utility model;

[0025] Figure 6 It is a schematic diagram of the structure of the activated carbon filter in the utility model.

[0026] In the figure:

[0027] 1. dust removal box; 10. horizontal plate; 101. through hole; 11. dust removal cylinder; 111. limiting ring; 12. connecting shaft; 13. motor; 14. smoke inlet; 15. dust outlet; 16. first support rod; 17. first connecting pipe; 18. fixing plate; 181. brush;

[0028] 2. Purification box; 21. Drain pipe; 22. Valve; 23. Connecting frame; 24. Main water pipe; 25. Horizontal pipe; 26. Straight pipe; 27. Sprinkler; 28. Second connecting pipe;

[0029] 3. filter box; 30. notch; 31. top plate; 32. frame; 321. activated carbon filter; 33. second support rod; 34. exhaust fan. DETAILED DESCRIPTION

[0030] 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 described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0031] This embodiment provides a technical solution:

[0032] See also Figure 1-Figure 6 As shown, a multi-stage exhaust gas purification device for a combustion furnace comprises a dust removal box 1, a purification box 2 and a filter box 3 which are arranged in sequence from back to front; the dust removal box 1 is of a hollow structure, and a smoke inlet 14 is installed at the lower part of the rear side wall of the dust removal box 1; a horizontal plate 10 is fixed inside the dust removal box 1, a through hole 101 is opened at the center of the horizontal plate 10, and a dust removal cylinder 11 with an open top is rotatably installed at the through hole 101, and the outer wall of the dust removal cylinder 11 is of a hollow structure, and a connecting shaft 12 is coaxially fixed to the inner bottom of the dust removal cylinder 11, and a motor 13 for driving the connecting shaft 12 to rotate is installed on the top of the dust removal box 1; fixing plates 18 are fixed to the inner walls of both sides of the dust removal box 1, and a brush 181 for cleaning the outer wall of the dust removal cylinder 11 is installed on one side wall of the fixing plate 18; two first connecting pipes 17 for connecting to the purification box 2 are also installed on the top of the dust removal box 1; the purification box 2 It has a hollow structure, a connecting frame 23 is fixed to the inner top of the purification box 2, a main water pipe 24 is fixed in the inner cavity of the connecting frame 23, the top of the main water pipe 24 passes through the top of the purification box 2 and passes out to the top of the purification box 2, a plurality of transverse pipes 25 are fixed to the outer wall of the main water pipe 24 from top to bottom, a plurality of straight pipes 26 are installed on the outer wall of the transverse pipe 25, the straight pipes 26 pass through the connecting frame 23 and pass out to the purification box 2, and a nozzle 27 is installed at the end of the straight pipe 26; two second connecting pipes 28 for connecting to the filter box 3 are installed on the top of the purification box 2; the filter box 3 has a hollow structure, a notch 30 is opened on the top of the filter box 3, a detachable top plate 31 is provided at the notch 30, a plurality of frames 32 inserted into the filter box 3 are fixed at the bottom of the top plate 31, and an activated carbon filter 321 is fixed at the opening of the frame 32; an exhaust fan 34 is installed at the front end of the filter box 3.

[0033] In this embodiment, the size of the notch 30 matches the size of the top plate 31, and the top plate 31 is fixedly connected to the filter box 3 by bolts. This design ensures that the top plate 31 can be accurately installed on the notch 30, achieving good sealing and preventing exhaust gas leakage. The bolt connection method provides a stable fixing effect, ensuring that the top plate 31 will not loosen or fall off during use.

[0034] In this embodiment, a dust outlet 15 is installed at the bottom of the dust removal box 1, and a sealing cover is installed at the bottom of the dust outlet 15, and the sealing cover is threadedly connected to the dust outlet 15. The setting of the dust outlet 15 is convenient for cleaning dust and particulate matter in the dust removal box 1. The threaded sealing cover ensures that the dust outlet 15 can be tightly closed when not in use, preventing dust from leaking out and keeping the working environment clean, and also has the advantage of easy disassembly and assembly.

[0035] In this embodiment, a sewage pipe 21 is installed at the bottom of the purification box 2, and a valve 22 is installed on the sewage pipe 21, and the valve 22 is fixedly connected to the sewage pipe 21 through a flange. The sewage pipe 21 is used to discharge sewage or waste liquid generated during the purification process to keep the inside of the purification box 2 clean. The setting of the valve 22 facilitates the control of the sewage discharge process and avoids sewage leakage when sewage discharge is not required.

[0036] In this embodiment, the outer wall of the dust collecting cylinder 11 is coaxially keyed with two limit rings 111 near the top, and the two limit rings 111 are respectively located at the upper and lower sides of the horizontal plate 10. The setting of the limit rings 111 limits the movement range of the dust collecting cylinder 11 on the horizontal plate 10, prevents the dust collecting cylinder 11 from shaking or displacement during operation, and ensures the stability of the entire dust collecting system.

[0037] In this embodiment, first support rods 16 are installed at the four corners of the bottom of the dust removal box 1, and second support rods 33 are installed at the four corners of the bottom of the filter box 3. This design improves the stability of the dust removal box 1 and the filter box 3, and prevents the equipment from tilting or collapsing due to vibration or external force during operation.

[0038] In this embodiment, the dust removal box 1 is fixedly connected to the purification box 2 by bolts, and the filter box 3 is fixedly connected to the purification box 2 by bolts. The bolt connection method ensures that the connection between the dust removal box 1, the purification box 2 and the filter box 3 is firm and reliable, and improves the structural stability of the entire system.

[0039] In this embodiment, the connecting frame 23 is fixedly connected to the purification box 2 by bolts, and the overall shape of the connecting frame 23 is U-shaped. The U-shaped connecting frame 23 plays a stable supporting role for the main water pipe 24, etc. The bolt connection method ensures that the connection between the connecting frame 23 and the purification box 2 is firm and reliable.

[0040] It should be added that the bottom of the dust removal box 1 and the bottom of the purification box 2 in this embodiment are both cone-shaped. This design is conducive to the natural accumulation of dust and sewage at the bottom of the dust removal box 1 and the bottom of the purification box 2 under the action of gravity. This design facilitates the subsequent cleaning and discharge of dust and sewage.

[0041] It is worth noting that the motor 13 and the exhaust fan 34 involved in this embodiment are existing conventional technologies and will not be described in detail here.

[0042] When in use, the user first turns on the power of the motor 13 and the exhaust fan 34, and the motor 13 and the exhaust fan 34 start to work. The output shaft of the motor 13 rotates to drive the connecting shaft 12 and the dust collecting cylinder 11 to rotate. At the same time, the exhaust gas enters the dust collecting box 1 through the smoke inlet 14. When the exhaust gas passes through the rotating dust collecting cylinder 11, the dust in the exhaust gas is intercepted by the dust collecting cylinder 11. As the dust collecting cylinder 11 rotates, the bristles 181 brush off the dust on the outer wall of the dust collecting cylinder 11; then the filter The waste gas enters the purification box 2 through the first connecting pipe 17, and the water source simultaneously enters the multiple horizontal pipes 25 and straight pipes 26 on both sides through the main water pipe 24, and is sprayed out through multiple nozzles 27. At this time, the waste gas contacts the water mist, and the particles in the waste gas fall down. Then the filtered waste gas enters the filter box 3 through the second connecting pipe 28. The waste gas passes through multiple activated carbon filters 321 at the same time, and the waste gas is purified again. Finally, the purified waste gas is discharged to the outside through the exhaust fan 34.

[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A multi-stage exhaust gas purification device for a combustion furnace, characterized in that: It comprises a dust removal box (1), a purification box (2) and a filter box (3) which are arranged in sequence from the back to the front; The dust removal box (1) is of a hollow structure, and a smoke inlet (14) is installed at the lower part of the rear side wall of the dust removal box (1); a horizontal plate (10) is fixed inside the dust removal box (1), a through hole (101) is opened at the center of the horizontal plate (10), and a dust removal cylinder (11) with an open top is rotatably installed at the through hole (101), the outer wall of the dust removal cylinder (11) is of a hollow structure, a connecting shaft (12) is coaxially fixed to the inner bottom of the dust removal cylinder (11), and a motor (13) for driving the connecting shaft (12) to rotate is installed at the top of the dust removal box (1); fixed plates (18) are fixed to the inner walls of both sides of the dust removal box (1), and a brush (181) for cleaning the outer wall of the dust removal cylinder (11) is installed on one side wall of the fixed plate (18); two first connecting pipes (17) for connecting to the purification box (2) are also installed at the top of the dust removal box (1); The purification box (2) is of a hollow structure. A connecting frame (23) is fixed to the inner top of the purification box (2). A main water pipe (24) is fixed in the inner cavity of the connecting frame (23). The top of the main water pipe (24) passes through the top of the purification box (2) and passes out to the top of the purification box (2). A plurality of transverse pipes (25) are fixed from top to bottom on the outer wall of the main water pipe (24). A plurality of straight pipes (26) are installed on the outer wall of the transverse pipe (25). The straight pipes (26) pass through the connecting frame (23) and pass out to the purification box (2). A nozzle (27) is installed at the end of the straight pipe (26). Two second connecting pipes (28) for connecting to the filter box (3) are installed on the top of the purification box (2). The filter box (3) is of a hollow structure. A notch (30) is provided at the top of the filter box (3). A detachable top plate (31) is provided at the notch (30). A plurality of frames (32) inserted into the filter box (3) are fixed at the bottom of the top plate (31). An activated carbon filter screen (321) is fixed at the opening of the frame (32). An exhaust fan (34) is installed at the front end of the filter box (3).

2. The multi-stage exhaust gas purification device of the combustion furnace according to claim 1, characterized in that: The size of the notch (30) matches the size of the top plate (31), and the top plate (31) is fixedly connected to the filter box (3) via bolts.

3. The multi-stage exhaust gas purification device of a combustion furnace according to claim 1, characterized in that: A dust discharge port (15) is installed at the bottom of the dust removal box (1), a sealing cover is installed at the bottom of the dust discharge port (15), and the sealing cover is threadedly connected to the dust discharge port (15).

4. The multi-stage exhaust gas purification device of a combustion furnace according to claim 1, characterized in that: A sewage pipe (21) is installed at the bottom of the purification box (2), a valve (22) is installed on the sewage pipe (21), and the valve (22) is fixedly connected to the sewage pipe (21) through a flange.

5. The multi-stage exhaust gas purification device of a combustion furnace according to claim 1, characterized in that: Two limiting rings (111) are coaxially keyed to the outer wall of the dust removal cylinder (11) near the top, and the two limiting rings (111) are respectively located at the upper and lower sides of the transverse plate (10).

6. The multi-stage exhaust gas purification device of a combustion furnace according to claim 1, characterized in that: The first support rods (16) are installed at the four corners of the bottom of the dust removal box (1), and the second support rods (33) are installed at the four corners of the bottom of the filter box (3).

7. The multi-stage exhaust gas purification device of a combustion furnace according to claim 1, characterized in that: The dust removal box (1) is fixedly connected to the purification box (2) via bolts, and the filter box (3) is fixedly connected to the purification box (2) via bolts.

8. The multi-stage exhaust gas purification device of a combustion furnace according to claim 1, characterized in that: The connecting frame (23) is fixedly connected to the purification box (2) by means of bolts, and the overall shape of the connecting frame (23) is U-shaped.

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