Dust removal device in aluminum alloy smelting process

Abstract

The utility model relates to the technical field of aluminum alloy production, provides a dust removal device in an aluminum alloy smelting process, and solves the problem of high maintenance cost of a dust removal method in the existing aluminum alloy smelting process. The dust removal method in the aluminum alloy smelting process is applied to the dust removal device, the dust removal device comprises a shell, an air inlet and an air outlet are formed in the upper side and the lower side of the shell respectively, a plurality of dust collection pipes are arranged in the shell, a discharge column is arranged in each dust collection pipe, air holes are formed in each dust collection pipe, and dust collection nets are arranged on the two sides of each dust collection pipe. A gas collection channel is arranged on the outer side of each dust collection net, and the discharge state of discharge columns close to the two sides of each gas collection channel is controlled according to the gas flow in each gas collection channel, so that dust removal is achieved; by designing the discharging column, the dust collecting pipe and the dust collecting net, most smoke dust can be removed through cooperation of the discharging column and the dust collecting pipe, the burden of the dust collecting net is relieved, the maintenance frequency is reduced, and therefore the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy production technology, and specifically to a dust removal device in the aluminum alloy smelting process. Background Technology

[0002] With the rapid development of my country's economy and the advancement of industrialization, the smelting industry of non-ferrous metals such as aluminum and magnesium has experienced tremendous growth. Aluminum-magnesium alloys, in particular, are widely used in aerospace, automobile manufacturing, and building decoration industries due to their excellent mechanical properties and good corrosion resistance. However, the production process of aluminum-magnesium alloys also generates large amounts of harmful gases, such as sulfur dioxide and nitrogen oxides, which severely pollute the air and have a serious impact on human health and the ecological environment.

[0003] In existing production lines, the common method for removing the flue gas generated during the smelting process is to use a bag filter to remove dust from the gas. However, after a certain dust removal cycle, the dust on the surface of the bag filter will clog the mesh of the bag, requiring regular replacement, which results in high maintenance costs. Utility Model Content

[0004] Therefore, in view of the above problems, this utility model provides a dust removal device in the aluminum alloy smelting process, which solves the problem of high maintenance cost of existing dust removal equipment in the aluminum alloy smelting process.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A dust removal device for aluminum alloy smelting includes a housing with an air inlet and an air outlet on its upper and lower sides, respectively. The housing contains several dust collection pipes, each containing a discharge column. Each dust collection pipe has a vent hole, and each dust collection pipe has a dust collection screen on both sides. Each dust collection screen has a gas collection channel on its outer side. The discharge state of the discharge columns adjacent to each gas collection channel is controlled according to the gas flow rate within each gas collection channel. Each discharge column has a discharge state and a non-discharge state. In the discharge state, the discharge column is connected to the negative electrode; in the non-discharge state, the discharge column is disconnected from the negative electrode.

[0007] Furthermore, when the flow rate difference between the air inlet and the air outlet reaches a preset first difference value, each of the discharge columns is in a discharge state; when the flow rate difference between the air inlet and the air outlet reaches a preset second difference value, each of the discharge columns is in a non-discharge state.

[0008] Furthermore, the dust removal device also includes several nozzles, each of which is located at the top of each of the dust collection pipes, and each nozzle is activated to clean the dust from each of the dust collection pipes.

[0009] Furthermore, the dust removal device also includes an opening and closing component, which includes a fixed frame and several lifting cylinders. Each lifting cylinder is located around the fixed frame, each dust collection pipe is connected to the top of the fixed frame, the bottom of the dust collection pipe is provided with a conical head, and each air collection channel is provided with a vibration module on its side wall.

[0010] Furthermore, the dust removal device also includes several relays, each relay being connected to each of the discharge columns. When the gas flow rate in each gas collection channel reaches a preset first flow rate, the corresponding relay is controlled to connect to each of the discharge columns.

[0011] Furthermore, the diameter of each of the aforementioned vent holes is 1cm-20cm.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, through the design of a discharge column, dust collection pipe and dust collection net, can remove most of the smoke and dust first when the gas flow rate in the gas collection channel is greater than the preset first flow rate, by cooperating with the discharge column and dust collection pipe, reducing the burden on the dust collection net, thereby reducing the maintenance frequency and thus reducing maintenance costs.

[0014] 2. This utility model, through the design of a discharge column, a dust collection pipe, and a dust collection net, allows the discharge column and dust collection pipe to work together to remove dust when the gas flow rate in the gas collection channel is less than a preset first flow rate. After the dust collection net has been working for a certain period of time, when the flow rate difference between the inlet and outlet reaches the preset first difference, the dust collection net and the dust collection pipe can work together to remove dust. This can also reduce the burden on the dust collection net, reduce the maintenance frequency, and thus reduce maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the ventilation hole configuration in an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the opening and closing component structure according to an embodiment of the present utility model.

[0018] Explanation of icon numbers

[0019] Housing 1; Air inlet 11; Air outlet 12;

[0020] Dust collection pipe 2; air vent 21; conical head 22;

[0021] Discharge column 3;

[0022] Dust collection net 4;

[0023] Gas collection channel 5; Vibration module 51;

[0024] Nozzle 6;

[0025] Opening and closing components 7; fixing frame 71; lifting cylinder 72. Detailed Implementation

[0026] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0027] Example

[0028] like Figures 1 to 3 As shown, a dust removal device for aluminum alloy smelting includes a housing 1. The housing 1 has an air inlet 11 and an air outlet 12 on its upper and lower sides, respectively. Nine dust collection pipes 2 are located inside the housing 1. Each dust collection pipe 2 contains a discharge column 3. Each dust collection pipe 2 has a vent hole 21. Dust collection nets 4 are located on both sides of each dust collection pipe 2. A gas collection channel 5 is located outside each dust collection net 4. The discharge state of the discharge columns 3 adjacent to each gas collection channel 5 is controlled according to the gas flow rate within each gas collection channel 5. Each discharge column 3 has a discharge state and a non-discharge state. In the discharge state, the discharge column is connected to the negative electrode; in the non-discharge state, the discharge column is disconnected from the negative electrode.

[0029] It should be noted that each of the dust collection tubes 2 is a tube with a closed top and an open bottom. The top of each of the dust collection tubes 2 is electrically connected to the anode, and the bottom of each of the discharge columns 3 is electrically connected to the cathode. The vent holes 21 are evenly distributed on the surface of each of the dust collection tubes 2.

[0030] The dust removal device also includes several relays (not shown in the figure), each of which is connected to each of the discharge columns 3. When the gas flow rate in each of the gas collection channels 5 reaches the preset first flow rate, the corresponding relay is controlled to connect each of the discharge columns 3 to the negative electrode.

[0031] In this embodiment, the gas flow rate in each of the gas collection channels 5 is greater than the preset first flow rate. The corresponding relays are controlled to connect to each of the discharge columns 3. Most of the smoke and dust are removed first through the cooperation of the discharge column 3 and the dust collection pipe 2, reducing the burden on the dust collection screen 4, thereby reducing the maintenance frequency and thus reducing maintenance costs. The relays can be purchased from the market and will not be described in detail here.

[0032] The setting of the first flow rate is adjusted according to the size of the dust removal equipment. When the gas flow rate in the gas collection channel 5 is greater than the preset first flow rate, it indicates that the flue gas flow rate is large. If the dust collection net 4 is used to handle the flue gas flow rate, the permeability of the dust collection net 4 will decrease sharply, which will lead to excessive pressure inside the shell 1. Therefore, the dust removal device proposed in this application can handle a larger flue gas flow rate with the same size as the traditional bag dust collector.

[0033] When the flow rate difference between the air inlet 11 and the air outlet 12 reaches a preset first difference value, all the discharge columns 3 are in a discharge state. When the flow rate difference between the air inlet 11 and the air outlet 12 reaches a preset second difference value, all the discharge columns 3 are in a non-discharge state.

[0034] The dust removal device also includes several nozzles 6, each nozzle 6 being located at the top of each dust collection pipe 2, and each nozzle 6 being activated to clean the dust collection pipe 2.

[0035] Under the jet action of the nozzle 6, the particles adsorbed on the surface of the dust collection pipe 2 will be carried by the flue gas flow through the air vent 21 to the surface of the dust collection net 4 and blocked. The nozzle can spray air in a single burst or spray air in multiple intervals.

[0036] The dust removal device also includes an opening and closing component 7, which includes a fixed frame 71 and several lifting cylinders 72. Each lifting cylinder 72 is located around the fixed frame 71. Each dust collection pipe 2 is connected to the top of the fixed frame 71. The bottom of the dust collection pipe 2 is provided with a conical head 22. Each air collection channel 5 is provided with a vibration module 51 on its side wall.

[0037] The lifting cylinders 72 are activated to lower the dust collection pipes 2, and the vibration modules 51 are activated to clean the dust collection screens 4.

[0038] After the dust removal is completed, the lifting cylinder 72 returns the conical head 22 to its original position.

[0039] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A dust extraction device for use in the smelting of aluminium alloys, comprising a housing, characterised in that: The housing has an air inlet and an air outlet on its upper and lower sides, respectively. The housing contains several dust collection tubes, each containing a discharge column. Each dust collection tube has a vent hole, and each dust collection tube has a dust collection screen on both sides. Each dust collection screen has a gas collection channel on its outer side. The discharge state of the discharge columns adjacent to each gas collection channel is controlled according to the gas flow rate in each gas collection channel. Each discharge column has a discharge state and a non-discharge state. In the discharge state, the discharge column is connected to the negative electrode. In the non-discharge state, the discharge column is disconnected from the negative electrode.

2. The dust removal device in the smelting process of aluminum alloy according to claim 1, characterized in that: When the flow rate difference between the air inlet and the air outlet reaches a preset first difference value, all the discharge columns are in a discharge state. When the flow rate difference between the air inlet and the air outlet reaches a preset second difference value, all the discharge columns are in a non-discharge state.

3. The dust removal device in the smelting process of aluminum alloy according to claim 2, characterized in that: The dust removal device also includes several nozzles, each of which is located at the top of each of the dust collection pipes. Each nozzle is activated to clean the dust from each of the dust collection pipes.

4. The dust removal device in the aluminum alloy smelting process according to claim 1, characterized in that: The dust removal device also includes an opening and closing component, which includes a fixed frame and several lifting cylinders. Each lifting cylinder is located around the fixed frame, and each dust collection pipe is connected to the top of the fixed frame. The bottom of the dust collection pipe is provided with a conical head, and each air collection channel is provided with a vibration module on its side wall.

5. The dust removal device in the smelting process of aluminum alloy according to claim 1, characterized in that: The dust removal device also includes several relays, each of which is connected to each of the discharge columns. When the gas flow rate in each gas collection channel reaches a preset first flow rate, the corresponding relay is controlled to connect to each of the discharge columns.

6. The dust removal device in the smelting process of aluminum alloy according to claim 1, characterized in that: The diameter of each of the aforementioned vent holes is 1cm-20cm.

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