Dust removal device of electric furnace steelmaking vacuum filter

Abstract

The utility model discloses an electric furnace steelmaking vacuum filter dust removal device which comprises a dust removal body, supporting legs are arranged on the lower surface of the dust removal body, an exhaust pipe is arranged on the upper surface of the dust removal body in a penetrating mode, a discharging bin is arranged below the dust removal body, a discharging pipe is arranged at the position of the discharging bin, and a valve is arranged at the position of the discharging pipe. An air inlet is formed in the side surface of the dust removal body; according to the cooling device, cooling water is injected into the cooling box, gas exchanges heat with the gas inlet pipe when passing through the interior of the cooling box, then high-temperature gas enters the gas inlet pipe, the gas inlet pipe can achieve primary cooling of the gas, meanwhile, the draught fan is started, external cold air is pumped into the gas inlet pipe, the cold air and the high-temperature gas are mixed, and the cooling effect is improved. The temperature of the high-temperature gas is further reduced, and the high-temperature gas can be effectively prevented from directly entering the dust remover to damage the filter bag.

Description

Technical Field

[0001] This utility model relates to the technical field of filter dust removal devices, and in particular to a vacuum filter dust removal device for electric furnace steelmaking. Background Technology

[0002] Electric arc furnace steelmaking generates a large amount of smoke and dust during the oxidation period. This smoke and dust seriously pollutes the surrounding environment, affecting people's lives and the growth of surrounding plants. Baghouse dust collectors are generally used to remove the dust, but because the temperature of the residue in the air is high, it can easily cause the filter bags to burn out.

[0003] A search revealed application number CN202222934462.3, which describes a baghouse dust collector with a cooling function. Specifically, it includes a mounting frame with a cylindrical barrel mounted on the upper left side and a dust collector mounted on the upper right side. A curved inlet pipe is installed inside the barrel, with its left and right ends extending into the lower part of the dust collector. A condenser tube is installed around the inside of the barrel. The filter assembly includes a ring that slides vertically within a groove. A cage is mounted at the lower end of the ring, with filter bags on one side of the cage. A connecting ring is threaded into the groove. A discharge pipe is located at the upper rear end of the dust collector. During use, it prioritizes cooling of high-temperature gas, effectively preventing high-temperature gas from directly entering the dust collector and damaging the filter bags. When replacing the filter bags, operators only need to rotate the grip ring in both directions to disassemble and install them.

[0004] In the aforementioned utility model, cooling water is used to slowly cool the gas through a curved air inlet pipe. However, this method results in limited gas cooling, which may still exceed the limit temperature for the filter bag, thus causing damage to the filter bag.

[0005] To address this issue, a vacuum filter dust removal device for electric arc furnace steelmaking is proposed, which has the advantage of effective cooling, thereby solving the problems mentioned in the background technology. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a vacuum filter dust removal device for electric furnace steelmaking.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A vacuum filter dust removal device for electric arc furnace steelmaking includes a dust removal body, a support leg on the lower surface of the dust removal body, an exhaust pipe through the upper surface of the dust removal body, a discharge hopper below the dust removal body with a discharge pipe and a valve at the discharge pipe, an air inlet on the side surface of the dust removal body with an air inlet pipe, a cooling box outside the air inlet pipe and fixedly connected to the dust removal body, a fan above the cooling box, and one end of the fan connected to the air inlet pipe via a duct.

[0009] As a further description of the above technical solution: a water inlet pipe is provided on the upper part of the cooling box, and a water outlet pipe is provided on the lower surface of the cooling box. Both the water inlet pipe and the water outlet pipe are provided with pipe caps.

[0010] As a further description of the above technical solution: a refrigeration compressor is provided on the lower surface of the cooling box, and the output end of the refrigeration compressor extends through and into the interior of the cooling box.

[0011] As a further description of the above technical solution: the intake pipe has an overall spiral structure.

[0012] As a further description of the above technical solution: the air intake pipe and the cooling box are connected by a welded structure.

[0013] As a further description of the above technical solution: a control panel is provided on the front of the dust removal body.

[0014] This utility model has the following beneficial effects:

[0015] In this invention, by injecting cooling water into the cooling box, the gas exchanges heat with the inlet pipe as it passes through the interior of the cooling box. After the high-temperature gas enters the inlet pipe, the inlet pipe can achieve preliminary cooling of the gas. At the same time, the fan is started to draw cold air from the outside into the inlet pipe, so that the cold air mixes with the high-temperature gas, further reducing the temperature of the high-temperature gas. This can effectively prevent the high-temperature gas from directly entering the dust collector and damaging the filter bags. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a vacuum filter dust removal device for electric furnace steelmaking according to the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the cooling box of a vacuum filter dust removal device for electric furnace steelmaking according to this utility model;

[0018] Figure 3 This is a schematic diagram of the air inlet pipe connection structure of a vacuum filter dust removal device for electric furnace steelmaking according to this utility model.

[0019] Legend:

[0020] 1. Dust collector body; 2. Support legs; 3. Unloading hopper; 4. Cooling box; 5. Air inlet pipe; 6. Water inlet pipe; 7. Water outlet pipe; 8. Fan; 9. Control panel; 10. Air duct; 11. Exhaust pipe; 12. Refrigeration compressor. Detailed Implementation

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

[0022] According to an embodiment of the present invention, a vacuum filter dust removal device for electric furnace steelmaking is provided.

[0023] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments, such as... Figure 1-3 As shown, a dust removal device for vacuum filter in electric arc furnace steelmaking according to an embodiment of the present utility model includes a dust removal body 1, a support leg 2 provided on the lower surface of the dust removal body 1, an exhaust pipe 11 provided through the upper surface of the dust removal body 1, a discharge bin 3 provided below the dust removal body 1, a discharge pipe provided at the discharge bin 3, and a valve provided at the discharge pipe, an air inlet provided on the side surface of the dust removal body 1, an air inlet pipe 5 provided at the air inlet, a cooling box 4 provided outside the air inlet pipe 5, and the cooling box 4 fixedly connected to the dust removal body 1, a fan 8 provided above the cooling box 4, and one end of the fan 8 connected to the air inlet pipe 5 through an air duct 10;

[0024] Specifically, by injecting cooling water into the cooling box 4, the gas exchanges heat with the inlet pipe 5 when passing through the interior of the cooling box 4. After the high-temperature gas enters the inlet pipe 5, the inlet pipe 5 can achieve preliminary cooling of the gas. At the same time, the fan 8 is started to draw cold air from the outside into the inlet pipe 5, so that the cold air mixes with the high-temperature gas, further reducing the temperature of the high-temperature gas. This can effectively prevent the high-temperature gas from directly entering the dust collector and damaging the filter bags.

[0025] In one embodiment, a water inlet pipe 6 is provided above the cooling box 4, and a water outlet pipe 7 is provided on the lower surface of the cooling box 4. Both the water inlet pipe 6 and the water outlet pipe 7 are provided with pipe caps.

[0026] Specifically, cooling water is added to the cooling tank 4 through the inlet pipe 6, and the cooling water in the cooling tank 4 is discharged and replaced through the outlet pipe 7.

[0027] In one embodiment, a refrigeration compressor 12 is provided on the lower surface of the cooling box 4, and the output end of the refrigeration compressor 12 extends through and into the interior of the cooling box 4.

[0028] Specifically, the refrigeration compressor 12 is used to cool the cooling water, which can prevent the cooling water temperature in the cooling box 4 from rising after long-term heat exchange, thus affecting the cooling effect on the gas inside the intake pipe 5.

[0029] In one embodiment, the intake pipe 5 has an overall spiral structure.

[0030] Specifically, it can increase the contact area with cooling water and improve the cooling effect on the gas.

[0031] In one embodiment, the intake pipe 5 and the cooling box 4 are connected by a welded structure.

[0032] Specifically, the connection is tight, and cooling water cannot leak from between the intake pipe 5 and the cooling box 4.

[0033] In one embodiment, a control panel 9 is provided on the front of the dust removal body 1.

[0034] Specifically, control panel 9 is used to control the dust removal device.

[0035] Working principle:

[0036] During use, cooling water is injected into the cooling box 4. As the gas passes through the interior of the cooling box 4, it exchanges heat with the inlet pipe 5. After the high-temperature gas enters the inlet pipe 5, the inlet pipe 5 can achieve preliminary cooling of the gas. At the same time, the fan 8 is started to draw cold air from the outside into the inlet pipe 5, so that the cold air mixes with the high-temperature gas, further reducing the temperature of the high-temperature gas. This can effectively prevent the high-temperature gas from directly entering the dust collector and damaging the filter bags.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vacuum filter dust removal device for electric arc furnace steelmaking, comprising a dust removal body (1), characterized in that: The dust removal body (1) has a support leg (2) on its lower surface, an exhaust pipe (11) through its upper surface, a discharge bin (3) below the dust removal body (1), a discharge pipe and a valve at the discharge bin (3), an air inlet on the side surface of the dust removal body (1) and an air inlet pipe (5) at the air inlet, a cooling box (4) outside the air inlet pipe (5) and a fixed connection between the cooling box (4) and the dust removal body (1), a fan (8) above the cooling box (4) and an air inlet pipe (5) at one end of the fan (8) connected to the air inlet pipe (5) through a duct (10).

2. The vacuum filter dust removal device for electric furnace steelmaking according to claim 1, characterized in that: A water inlet pipe (6) is provided on the upper part of the cooling box (4), and a water outlet pipe (7) is provided on the lower surface of the cooling box (4). Both the water inlet pipe (6) and the water outlet pipe (7) are provided with pipe covers.

3. The vacuum filter dust removal device for electric arc furnace steelmaking according to claim 1, characterized in that: A refrigeration compressor (12) is provided on the lower surface of the cooling box (4), and the output end of the refrigeration compressor (12) extends through and into the interior of the cooling box (4).

4. The vacuum filter dust removal device for electric arc furnace steelmaking according to claim 1, characterized in that: The intake pipe (5) has a spiral structure.

5. The vacuum filter dust removal device for electric arc furnace steelmaking according to claim 1, characterized in that: The air intake pipe (5) and the cooling box (4) are connected by a welded structure.

6. The vacuum filter dust removal device for electric arc furnace steelmaking according to claim 1, characterized in that: The dust removal body (1) is provided with a control panel (9) on the front.

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