Smoke exhaust device of vanadium-nitrogen alloy tunnel kiln

Abstract

The utility model discloses a smoke exhaust device of a vanadium-nitrogen alloy tunnel kiln, which belongs to the technical field of vanadium-nitrogen alloy tunnel kilns and comprises a base, the top surface of the base is fixedly connected with a spray tower and fixedly provided with a water pump, the output end of the water pump is provided with a spray mechanism, and the input end of the water pump is fixedly connected with a water suction pipe. And the end part of the water suction pipe is fixedly connected with a water pumping pipe. According to the utility model, the water pump, the water suction pipe, the water pumping pipe, the multi-way joint, the water guide pipe, the spray thrower and the spray head are matched to dedust flue gas entering the spray tower, the filter screen in the water pumping pipe is utilized to filter impurities in water, and the filtered impurities are deposited in the inner cavity of the threaded cylinder to be collected; the function of cleaning and filtering impurities in circulating water is realized, and the influence of the impurities on subsequent flue gas dust removal is avoided.

Description

Technical Field

[0001] This utility model relates to the field of vanadium-nitrogen alloy tunnel kiln technology, and more specifically, to a flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln. Background Technology

[0002] Vanadium-nitrogen alloys, as a novel steel additive, can replace ferrovanadium in the production of microalloyed steel, significantly improving the overall properties of steel, including strength, toughness, ductility, and resistance to thermal fatigue. This allows for the upgrading of steel products at a lower cost, enhancing the safety of buildings and their components in practical applications, reducing steel consumption, and saving construction costs. However, the processing of vanadium-nitrogen alloys in tunnel kilns generates flue gas, which, if directly emitted, affects air quality and requires treatment.

[0003] A search revealed a utility model patent with publication number CN211435588U, which discloses a flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln. This technical solution, based on the characteristics of the vanadium-nitrogen alloy sintering process, designs a targeted flue gas treatment and emission system. Specifically, the patent first uses a heat exchanger to initially reduce the flue gas temperature, then uses a cyclone dust collector to remove large-diameter particles, and then sprays the gas through a spray tower to fully capture dust before emission. Building upon this, the patent innovatively improves the structure of the spray tower by introducing a spray water recycling system and employing a stirring mechanism at the bottom of the tower to prevent impurity deposition. Simultaneously, a wave-damping plate limits the waves and swirls caused by the stirring. The airflow after spraying contains a certain amount of water vapor, which can be mitigated by a steam-water separator before being discharged. The airflow flowing through the steam-water separator is ultimately guided into the chimney for discharge. This patent can effectively purify particulate pollutants in flue gas, and is particularly suitable for treating vanadium-nitrogen alloy sintering flue gas. However, the aforementioned patent has the following shortcomings: although the cooling water in the spray tower can be recycled, there are impurities filtered out in the recycled water, and failure to treat them will affect the subsequent dust removal effect on the flue gas. Therefore, we propose a flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide a flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln.

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln includes a base, a spray tower fixedly connected to the top surface of the base, a water pump fixedly installed on the top surface of the base, a spray mechanism at the output end of the water pump, a suction pipe fixedly connected to the input end of the water pump, a pumping pipe fixedly connected to the end of the suction pipe, one end of the pumping pipe being fixedly sleeved to the bottom of the inner cavity of the spray tower, and the other end of the pumping pipe having a threaded opening, in which a threaded cylinder is threadedly installed, a filter screen fixedly connected to the top surface of the threaded cylinder, the side of the filter screen being in contact with the inner wall of the pumping pipe, the position of the filter screen being aligned with the position of one end of the suction pipe, and an agitation mechanism being provided on the side of the bottom end of the spray tower.

[0007] As a preferred embodiment of the present invention, the spraying mechanism includes a multi-port connector fixedly installed at the output end of the water pump. Multiple output ends of the multi-port connector are fixedly connected to water guide pipes. The ends of the multiple water guide pipes are respectively fixedly sleeved to the inner cavity of the spraying tower and fixedly connected to sprayers. Multiple nozzles are fixedly installed on the bottom surface of the multiple sprayers.

[0008] As a preferred embodiment of the present invention, the agitation mechanism includes a servo motor fixedly installed on the side of the spray tower, the output shaft of the servo motor extending into the inner cavity of the spray tower and fixedly connected to an agitator.

[0009] As a preferred embodiment of this utility model, an air inlet pipe is fixedly sleeved on the side of the spray tower, and an exhaust pipe is fixedly connected to the top of the spray tower.

[0010] As a preferred embodiment of this utility model, the spray tower is provided with a water inlet on its side, and a plug is fitted onto the water inlet.

[0011] As a preferred embodiment of this utility model, a drain valve is fixedly installed on the outer side of the bottom end of the spray tower, and one end of the drain valve extends to the bottom of the inner cavity of the spray tower.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] In this invention, a water pump, suction pipe, pumping pipe, multi-way connector, water guide pipe, sprayer, and nozzle work together to remove dust from the flue gas entering the spray tower. A filter screen in the pumping pipe filters impurities from the water, and the filtered impurities are collected and deposited in the inner cavity of the threaded cylinder. This achieves the function of cleaning and filtering impurities in the circulating water, preventing impurities from affecting subsequent flue gas dust removal, and demonstrates good practicality. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the spray tower of this utility model;

[0017] Figure 4 This is a schematic diagram showing the disassembled water pumping pipe and threaded cylinder of this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the stirring paddle of this utility model.

[0019] Explanation of the labels in the diagram:

[0020] 1. Base; 2. Spray tower; 3. Water pump; 4. Spraying mechanism; 5. Agitating mechanism; 6. Pumping pipe; 7. Suction pipe; 8. Threaded port; 9. Threaded cylinder; 10. Filter screen; 11. Servo motor; 12. Agitator; 13. Multi-port connector; 14. Water guide pipe; 15. Sprayer; 16. Nozzle; 17. Exhaust pipe; 18. Air inlet pipe; 19. Drain valve; 20. Water inlet; 21. Plug. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example:

[0025] Please see Figure 1-5 A flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln includes a base 1, a spray tower 2 fixedly connected to the top surface of the base 1, a water pump 3 fixedly installed on the top surface of the base 1, a spray mechanism 4 provided at the output end of the water pump 3, a suction pipe 7 fixedly connected to the input end of the water pump 3, a pumping pipe 6 fixedly connected to the end of the suction pipe 7, one end of the pumping pipe 6 fixedly sleeved to the bottom of the inner cavity of the spray tower 2, and the other end of the pumping pipe 6 provided with a threaded port 8, a threaded cylinder 9 threadedly installed in the threaded port 8, a filter screen 10 fixedly connected to the top surface of the threaded cylinder 9, the side of the filter screen 10 fitting against the inner wall of the pumping pipe 6, the position of the filter screen 10 being aligned with the position of one end of the suction pipe 7, and an agitation mechanism 5 provided on the side of the bottom end of the spray tower 2.

[0026] In this embodiment, the filter screen 10 is used to filter impurities in the water, and the filtered impurities are deposited in the inner cavity of the threaded cylinder 9. In addition, an external power supply is used to power the water pump 3 and the servo motor 11.

[0027] For details, please refer to Figure 1 and Figure 2 The spraying mechanism 4 includes a multi-port connector 13 fixedly installed at the output end of the water pump 3. Multiple output ends of the multi-port connector 13 are fixedly connected to water guide pipes 14. The ends of the multiple water guide pipes 14 are respectively fixedly sleeved to the inner cavity of the spraying tower 2 and fixedly connected to sprayers 15. Multiple nozzles 16 are fixedly installed on the bottom surface of the multiple sprayers 15.

[0028] For details, please refer to Figure 1 , Figure 2 and Figure 5 The stirring mechanism 5 includes a servo motor 11 fixedly installed on the side of the spray tower 2. The output shaft of the servo motor 11 extends into the inner cavity of the spray tower 2 and is fixedly connected to a stirring paddle 12.

[0029] In this embodiment, the servo motor 11 drives the stirring paddle 12 to rotate, and the stirring paddle 12 stirs the water in the inner cavity of the spray tower 2 to prevent impurities in the water from depositing in the inner cavity of the spray tower 2.

[0030] For details, please refer to Figure 1 An air inlet pipe 18 is fixedly connected to the side of the spray tower 2, and an exhaust pipe 17 is fixedly connected to the top of the spray tower 2.

[0031] In this embodiment, the flue gas to be dusted is introduced into the inner cavity of the spray tower 2 through the air inlet pipe 18, and the flue gas after dusting is discharged through the exhaust pipe 17. A heat exchanger and a cyclone dust collector can be installed at the front end of the air inlet pipe 18, and a steam-water separator and a chimney can be installed at the rear end of the exhaust pipe 17.

[0032] For details, please refer to Figure 1 and Figure 3 The spray tower 2 is provided with a water inlet 20 on its side, and a plug 21 is fitted on the water inlet 20.

[0033] In this embodiment, the water inlet 20 is sealed by the plug 21, and dust-suppressing water is injected into the inner cavity of the spray tower 2 from the water inlet 20.

[0034] For details, please refer to Figure 1 A drain valve 19 is fixedly installed on the outer side of the bottom end of the spray tower 2, and one end of the drain valve 19 extends to the bottom of the inner cavity of the spray tower 2.

[0035] In this embodiment, the wastewater inside the spray tower 2 is discharged through the drain valve 19 so that the dust settling water can be replaced.

[0036] Working principle: In use, flue gas is first introduced into the inner cavity of the spray tower 2 through the air inlet pipe 18, causing the flue gas to move upward. Then, the water pump 3 is started to draw water from the bottom of the inner cavity of the spray tower 2 through the water suction pipe 7 and the water extraction pipe 6. The filter screen 10 filters the impurities in the water, and the filtered impurities are collected in the inner cavity of the threaded cylinder 9. The filtered water enters the multi-way connector 13. Finally, the water in the multi-way connector 13 is introduced into multiple sprayers 15 through multiple water guide pipes 14, so that the water in the multiple sprayers 15 is sprayed out from the nozzles 16. The water sprayed from the nozzles 16 comes into contact with the upward-moving flue gas, thereby cleaning the impurities in the flue gas.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln, comprising a base (1), characterized in that: A spray tower (2) is fixedly connected to the top surface of the base (1). A water pump (3) is fixedly installed on the top surface of the base (1). A spraying mechanism (4) is provided at the output end of the water pump (3). A suction pipe (7) is fixedly connected to the input end of the water pump (3). A pumping pipe (6) is fixedly connected to the end of the suction pipe (7). One end of the pumping pipe (6) is fixedly sleeved to the bottom of the inner cavity of the spray tower (2). A threaded opening (8) is provided at the other end of the pumping pipe (6). A threaded cylinder (9) is threaded in the threaded opening (8). A filter screen (10) is fixedly connected to the top surface of the threaded cylinder (9). The side of the filter screen (10) is in contact with the inner wall of the pumping pipe (6). The position of the filter screen (10) is aligned with the position of one end of the suction pipe (7). An agitation mechanism (5) is provided on the side of the bottom end of the spray tower (2).

2. The flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln according to claim 1, characterized in that: The spraying mechanism (4) includes a multi-port connector (13) fixedly installed at the output end of the water pump (3). Multiple output ends of the multi-port connector (13) are fixedly connected to water guide pipes (14). The ends of the multiple water guide pipes (14) are respectively fixedly sleeved to the inner cavity of the spraying tower (2) and fixedly connected to sprayers (15). Multiple nozzles (16) are fixedly installed on the bottom surface of the multiple sprayers (15).

3. The flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln according to claim 2, characterized in that: The stirring mechanism (5) includes a servo motor (11) fixedly installed on the side of the spray tower (2), and the output shaft of the servo motor (11) extends into the inner cavity of the spray tower (2) and is fixedly connected to a stirring paddle (12).

4. The flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln according to claim 1, characterized in that: An air inlet pipe (18) is fixedly sleeved on the side of the spray tower (2), and an exhaust pipe (17) is fixedly connected to the top of the spray tower (2).

5. The flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln according to claim 1, characterized in that: The spray tower (2) is provided with a water inlet (20) on its side, and a plug (21) is fitted on the water inlet (20).

6. The flue gas exhaust device for a vanadium-nitrogen alloy tunnel kiln according to claim 1, characterized in that: A drain valve (19) is fixedly installed on the outer side of the bottom end of the spray tower (2), and one end of the drain valve (19) extends to the bottom of the inner cavity of the spray tower (2).

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