Waste gas dust removal device for smelting furnace

Abstract

The utility model relates to the field of waste gas dust removal, and discloses a smelting furnace waste gas dust removal device which comprises a dust removal tank, the top of the dust removal tank is fixedly connected with a gas gathering conical barrel, the top of the gas gathering conical barrel is fixedly connected with an exhaust pipe, an L-shaped gas inlet pipe is arranged in an inner cavity of the dust removal tank, and a liquid discharge pipe is fixed to the bottom of the dust removal tank in a penetrating mode. The bottom of an inner cavity of the dust removal tank is provided with a diffusion cover, the top of the exhaust pipe is fixedly connected with a fixing plate, and the inner cavity of the dust removal tank is provided with a stirring rod. Waste gas is pressurized through the induced draft fan and then guided into the bottom diffusion cover through the L-shaped gas inlet pipe to be diffused and distributed in treatment liquid to be mixed, and when the treated waste gas is exhausted from the exhaust pipe, under the action of the driving mechanism, the stirring rod drives the stirring plate to stir in the treatment liquid, so that the waste gas and the treatment liquid are rapidly fused, and the dust removal efficiency is improved; the problem that an existing dust removal device is difficult to quickly mix waste gas and filtrate for dust removal is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas dust removal, in particular to a waste gas dust removal device for a smelting furnace. Background Art

[0002] A smelting furnace is a furnace that melts iron ore, such as hematite or magnetite, to make pig iron. The furnace is a tall columnar structure lined with refractory materials, and is filled with selected ore, coke and solvent (usually limestone) from the top. The smelting furnace that melts iron ore produces a lot of dusty exhaust gas, and dust removal is essential to ensure the safe discharge of the exhaust gas.

[0003] The patent with publication number CN 220861008 U discloses an exhaust gas dust removal device, which includes a dust removal device body, wherein the inner wall of the dust removal device body is fixedly installed with a first interception plate and a second interception plate, and the center positions of the first interception plate and the second interception plate are detachably connected with a guide pipe, and the device guides the exhaust gas into the bottom of the filtrate of the dust removal device, thereby greatly increasing the mixing efficiency of the exhaust gas and the filtrate, while reducing the generation of bubbles and improving the dust removal efficiency. However, the device has the problem that the exhaust gas is directly introduced from the air inlet pipe into the bottom of the filtrate in the dust removal device body, and is intercepted by the first interception plate and the second interception plate to be mixed with the filtrate, but the guide pipe responsible for discharging the exhaust gas into the bottom of the filtrate is set at the center position of the dust removal device body, and then the flue gas can only slowly diffuse to the surrounding area from one position to mix with the filtrate for dust removal even with the help of the first interception plate and the second interception plate, which makes it difficult to quickly remove the exhaust gas. For this reason, a smelting furnace exhaust gas dust removal device is proposed to solve the problem that the existing dust removal device is difficult to quickly mix the exhaust gas and the filtrate for dust removal. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a smelting furnace waste gas dust removal device to solve the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a smelting furnace waste gas dust removal device, comprising a dust removal tank, a gas gathering cone is fixedly connected to the top of the dust removal tank, an exhaust pipe is fixedly connected to the top of the gas gathering cone, an L-shaped air inlet pipe is arranged in the inner cavity of the dust removal tank, a drain pipe is fixedly passed through the bottom of the dust removal tank, a diffusion cover is arranged at the bottom of the inner cavity of the dust removal tank, a fixed plate is fixedly connected to the top of the exhaust pipe, a stirring rod is arranged in the inner cavity of the dust removal tank, a plurality of stirring plates are arranged on the outer ring of the stirring rod, a driving mechanism is arranged on the top of the fixed plate, a cleaning mechanism is arranged at the bottom of the inner cavity of the gas gathering cone, and a solenoid valve is arranged on one side of the drain pipe.

[0008] Preferably, the gas gathering cone is interconnected with the dust removal tank and the exhaust pipe, and the L-shaped air intake pipe passes through one side of the dust removal tank.

[0009] Preferably, the stirring L-shaped air inlet pipe is interconnected with the inner cavity of the diffusion cover, a plurality of slots are opened on the top of the diffusion cover, and the stirring rod passes through the inner cavity of the gas gathering cone and the fixed plate.

[0010] Preferably, the driving mechanism includes a rotating shaft, which is arranged in the inner cavity of the exhaust pipe and the top of which passes through the middle position of the fixed plate. The outer ring of the rotating shaft is fixedly connected to the turbine blades, and two driving sprockets and two driven sprockets are arranged on the top of the fixed plate.

[0011] Preferably, the driving sprocket and the driven sprocket are connected by chains respectively, the driving sprocket has a smaller diameter than the driven sprocket, the driving sprocket is fixedly connected to the rotating shaft, and the driven sprocket is fixed to the stirring rod.

[0012] Preferably, the outer rings of the stirring rod and the rotating shaft are both provided with bearings, the bearing on the rotating shaft is arranged at the bottom of the inner cavity of the exhaust pipe by means of a stabilizing plate, and the bearing on the stirring rod is arranged in the inner cavity of the fixing plate.

[0013] Preferably, the cleaning mechanism includes a cleaning tube fixed at the bottom of the inner cavity of the gas gathering cone, and two groups of cleaning nozzles are provided on the outer circle of the cleaning tube, and the two groups of cleaning nozzles are respectively facing the inner cavity and the inner cavity wall of the dust removal tank, and a water inlet pipe is provided on one side of the gas gathering cone, and the water inlet pipe is communicated with the cleaning tube.

[0014] (III) Beneficial effects

[0015] 1. The smelting furnace waste gas dust removal device injects the treatment liquid into the dust removal tank, and the waste gas is pressurized by the induced draft fan and then introduced into the bottom diffusion cover through the L-shaped air inlet pipe to be diffused and distributed in the treatment liquid. When the treated waste gas is discharged from the exhaust pipe, the stirring rod drives the stirring plate to stir in the treatment liquid under the action of the driving mechanism, so that the waste gas and the treatment liquid are quickly merged to accelerate the dust removal efficiency, which solves the problem that the existing dust removal device is difficult to quickly mix the waste gas and the filtrate for dust removal.

[0016] 2. The smelting furnace waste gas dust removal device will drive the turbine blades when the waste gas after dust removal is discharged from the exhaust pipe, and then drive the driving sprocket on the rotating shaft to rotate. With the cooperation of the driven sprocket and the chain which are larger in diameter than the driving sprocket, it is more labor-saving and easy to drive the stirring rod fixed to the driven sprocket to rotate, and convert the wind force generated by the exhaust gas into the power of the stirring treatment liquid to ensure the waste gas dust removal effect and efficiency.

[0017] 3. After the exhaust gas dust removal is completed, the clean water pipe is inserted into the water inlet pipe, and water is injected into the cleaning pipe. Then, two cleaning nozzles facing different directions spray water to the inner cavity and tank wall of the dust removal tank respectively, thereby cleaning the internal structure and tank wall of the dust removal tank, thereby improving the functionality of the exhaust gas dust removal device for the smelting furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the structural diagram of the utility model;

[0019] Figure 2 This is a cross-sectional view of the dust removal tank structure of the utility model;

[0020] Figure 3 This is a cross-sectional view of the exhaust pipe structure of the utility model;

[0021] Figure 4 The utility model structure Figure 2 Enlarged view of point A in the middle;

[0022] Figure 5 It is a schematic diagram of the air intake pipe and diffusion cover of the utility model structure.

[0023] In the figure: 1. dust removal tank; 2. gas gathering cone; 3. exhaust pipe; 4. L-shaped air inlet pipe; 5. drain pipe; 6. diffusion cover; 7. fixing plate; 8. stirring rod; 9. stirring plate; 10. driving mechanism; 101. rotating shaft; 102. turbine blades; 103. driving sprocket; 104. driven sprocket; 105. bearing; 106. chain; 107. stabilizing plate; 11. cleaning mechanism; 111. cleaning pipe; 112. cleaning nozzle; 113. water inlet pipe; 12. solenoid valve. DETAILED DESCRIPTION

[0024] 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.

[0025] Example: See Figure 1-5A smelting furnace waste gas dust removal device comprises a dust removal tank 1, a gas gathering cone 2 is fixedly connected to the top of the dust removal tank 1, an exhaust pipe 3 is fixedly connected to the top of the gas gathering cone 2, an L-shaped air inlet pipe 4 is arranged in the inner cavity of the dust removal tank 1, a drain pipe 5 is fixedly passed through the bottom of the dust removal tank 1, a diffusion cover 6 is arranged at the bottom of the inner cavity of the dust removal tank 1, a fixing plate 7 is fixedly connected to the top of the exhaust pipe 3, a stirring rod 8 is arranged in the inner cavity of the dust removal tank 1, a plurality of stirring plates 9 are arranged on the outer ring of the stirring rod 8, a driving mechanism 10 is arranged on the top of the fixing plate 7, a cleaning mechanism 11 is arranged at the bottom of the inner cavity of the gas gathering cone 2, and a solenoid valve 12 is arranged on one side of the drain pipe 5.

[0026] Furthermore, the gas collecting cone 2 is interconnected with the dust removal tank 1 and the exhaust pipe 3 , and the L-shaped air inlet pipe 4 passes through one side of the dust removal tank 1 .

[0027] Furthermore, the L-shaped air inlet pipe 4 is interconnected with the inner cavity of the diffuser cover 6 , a plurality of slots are provided on the top of the diffuser cover 6 , and the stirring rod 8 passes through the inner cavities of the gas gathering cone 2 and the fixing plate 7 .

[0028] Furthermore, the driving mechanism 10 includes a rotating shaft 101, which is arranged in the inner cavity of the exhaust pipe 3 and the top of which passes through the middle position of the fixed plate 7. The outer ring of the rotating shaft 101 is fixedly connected to the turbine blades 102, and two driving sprockets 103 and two driven sprockets 104 are arranged on the top of the fixed plate 7.

[0029] Furthermore, the driving sprocket 103 and the driven sprocket 104 are connected by chains 106 respectively. The diameter of the driving sprocket 103 is smaller than that of the driven sprocket 104. The driving sprocket 103 is fixedly connected to the rotating shaft 101, and the driven sprocket 104 is fixed to the stirring rod 8. When the dust-removed exhaust gas is discharged from the exhaust pipe 3, it will drive the turbine blades 102, and then drive the driving sprocket 103 on the rotating shaft 101 to rotate. With the cooperation of the driven sprocket 104, which has a larger diameter than the driving sprocket 103, and the chain 106, the stirring rod 8 fixed to the driven sprocket 104 can be driven to rotate more easily and labor-savingly, and the wind force generated by the exhaust of the exhaust gas is converted into the power of the stirring treatment liquid, thereby ensuring the dust removal effect and efficiency of the exhaust gas.

[0030] Furthermore, the outer rings of the stirring rod 8 and the rotating shaft 101 are both provided with bearings 105. The bearings 105 on the rotating shaft 101 are arranged at the bottom of the inner cavity of the exhaust pipe 3 using a stabilizing plate 107. The bearings 105 on the stirring rod 8 are arranged in the inner cavity of the fixed plate 7. The bearings 105 are used to reduce the friction between the stirring rod 8 and the rotating shaft 101 and the fixed plate 7, while ensuring that the stirring rod 8 and the rotating shaft 101 can rotate more stably.

[0031] Furthermore, the cleaning mechanism 11 includes a cleaning pipe 111 fixed at the bottom of the inner cavity of the gas gathering cone 2, and two groups of cleaning nozzles 112 are arranged on the outer circle of the cleaning pipe 111, and the two groups of cleaning nozzles 112 are respectively directed to the inner cavity and the inner cavity wall of the dust removal tank 1, and a water inlet pipe 113 is arranged on one side of the gas gathering cone 2, and the water inlet pipe 113 is interconnected with the cleaning pipe 111. After the exhaust gas dust removal operation is completed, the clean water pipe can be inserted into the water inlet pipe 113, and water can be injected into the cleaning pipe 111, and then the two cleaning nozzles 112 facing different directions spray water to the inner cavity and the tank wall of the dust removal tank 1 respectively, thereby cleaning the internal structure and the tank wall of the dust removal tank 1, thereby improving the functionality of the exhaust gas dust removal device of the smelting furnace.

[0032] Working principle: When using this smelting furnace waste gas dust removal device, the treatment liquid is injected into the dust removal tank 1, and the waste gas is pressurized by the induced draft fan and then introduced into the bottom diffusion cover 6 through the L-shaped air inlet pipe 4 to be diffused and distributed in the treatment liquid for mixing. When the treated waste gas is discharged from the exhaust pipe 3, under the action of the driving mechanism 10, the stirring rod 8 drives the stirring plate 9 to stir in the treatment liquid, so that the waste gas and the treatment liquid are quickly merged to accelerate the dust removal efficiency, thereby solving the problem that the existing dust removal device is difficult to quickly mix the waste gas and the filtrate for dust removal.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] 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 smelting furnace exhaust gas dust removal device, comprising a dust removal tank (1), characterized in that: The top of the dust removal tank (1) is fixedly connected to a gas gathering cone (2), the top of the gas gathering cone (2) is fixedly connected to an exhaust pipe (3), the inner cavity of the dust removal tank (1) is provided with an L-shaped air inlet pipe (4), the bottom of the dust removal tank (1) is penetrated and fixed with a liquid discharge pipe (5), the bottom of the inner cavity of the dust removal tank (1) is provided with a diffusion cover (6), the top of the exhaust pipe (3) is fixedly connected to a fixing plate (7), the inner cavity of the dust removal tank (1) is provided with a stirring rod (8), the outer ring of the stirring rod (8) is provided with a plurality of stirring plates (9), the top of the fixing plate (7) is provided with a driving mechanism (10), the bottom of the inner cavity of the gas gathering cone (2) is provided with a cleaning mechanism (11), and one side of the liquid discharge pipe (5) is provided with a solenoid valve (12).

2. The smelting furnace exhaust gas dust removal device according to claim 1 is characterized in that: The gas gathering cone (2) is interconnected with the dust removal tank (1) and the exhaust pipe (3), and the L-shaped air intake pipe (4) passes through one side of the dust removal tank (1).

3. The smelting furnace exhaust gas dust removal device according to claim 1 is characterized in that: The L-shaped air inlet pipe (4) is interconnected with the inner cavity of the diffusion cover (6), a plurality of slots are provided on the top of the diffusion cover (6), and the stirring rod (8) passes through the inner cavities of the gas gathering cone (2) and the fixing plate (7).

4. The smelting furnace exhaust gas dust removal device according to claim 1, characterized in that: The driving mechanism (10) comprises a rotating shaft (101), the rotating shaft (101) being arranged in the inner cavity of the exhaust pipe (3) and the top of which is arranged through the middle of a fixed plate (7), the outer ring of the rotating shaft (101) being fixedly connected with turbine blades (102), and the top of the fixed plate (7) being provided with two driving sprockets (103) and two driven sprockets (104).

5. The smelting furnace exhaust gas dust removal device according to claim 4, characterized in that: The driving sprocket (103) and the driven sprocket (104) are connected by chains (106) respectively; the driving sprocket (103) has a smaller diameter than the driven sprocket (104); the driving sprocket (103) is fixedly connected to the rotating shaft (101); and the driven sprocket (104) is fixed to the stirring rod (8).

6. The smelting furnace exhaust gas dust removal device according to claim 5, characterized in that: The outer rings of the stirring rod (8) and the rotating shaft (101) are both provided with bearings (105); the bearings (105) on the rotating shaft (101) are arranged at the bottom of the inner cavity of the exhaust pipe (3) by means of a stabilizing plate (107); and the bearings (105) on the stirring rod (8) are arranged in the inner cavity of the fixing plate (7).

7. The smelting furnace exhaust gas dust removal device according to claim 1 is characterized in that: The cleaning mechanism (11) comprises a cleaning pipe (111) fixed at the bottom of the inner cavity of the gas gathering cone (2); two groups of cleaning nozzles (112) are arranged on the outer ring of the cleaning pipe (111); the two groups of cleaning nozzles (112) are respectively directed toward the inner cavity and the inner cavity wall of the dust removal tank (1); a water inlet pipe (113) is arranged on one side of the gas gathering cone (2); and the water inlet pipe (113) is communicated with the cleaning pipe (111).

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