Efficient dust removal device for secondary aluminum casting workshop

Abstract

The utility model relates to an efficient dust removal device for a secondary aluminum casting workshop, which comprises an exhaust pipe communicated with the casting workshop and a shell positioned on one side of the casting workshop, the side wall of the shell is fixedly connected with a side shell, and the exhaust pipe fixedly penetrates through the side shell. The end, away from the casting workshop, of the exhaust pipe extends to the upper half portion in the shell, a filter screen is fixedly connected to the lower half portion in the shell, a partition plate is fixedly connected between the filter screen and the inner top wall of the shell, and a dust falling part is arranged on the side, close to the exhaust pipe, of the partition plate. A cyclone type gas-liquid separator is arranged on the side, away from the exhaust pipe, of the partition plate. The utility model relates to the technical field of secondary aluminum processing. Gas and entrained chemicals move upwards to enter the cyclone type gas-liquid separator to be subjected to gas-liquid separation, and the chemicals are discharged from the water discharging end of the cyclone type gas-liquid separator and fall to the lower half part of the shell, so that the chemicals are recycled, and waste of the chemicals is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of recycled aluminum processing, in particular to a high-efficiency dust removal device for a recycled aluminum smelting and casting workshop. Background Art

[0002] Recycled aluminum refers to aluminum metal obtained from scrap aluminum alloys, scrap aluminum or aluminum-containing waste materials in industrial production processes after at least one smelting and refining process, also known as secondary aluminum. Recycled aluminum mainly appears in the form of aluminum alloys and is an important source of aluminum metal.

[0003] Scrap aluminum regeneration mainly adopts pyrometallurgical smelting. In the process of smelting scrap aluminum, harmful waste gas will be generated. The waste gas contains a large amount of smoke and gases such as oxides of sulfur, carbon, phosphorus and nitrogen. Currently, most of them use solid and gas separation and then neutralize the gas with chemicals to purify the waste gas. However, in the waste gas treatment, in order to improve the waste gas purification effect, the chemicals will be used excessively, and the waste gas will carry part of the chemicals out, resulting in a waste of chemicals. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a high-efficiency dust removal device for a secondary aluminum smelting and casting workshop, so as to solve the technical problems mentioned in the above background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A high-efficiency dust removal device for a recycled aluminum smelting and casting workshop, comprising an exhaust pipe connected to the smelting and casting workshop, and also comprising a shell located on one side of the smelting and casting workshop, the side wall of the shell being fixedly connected to a side shell, the exhaust pipe being fixedly passed through the side shell, and the end of the exhaust pipe away from the smelting and casting workshop extending to the upper half of the shell, the lower half of the shell being fixedly connected to a filter screen, a partition being fixedly connected between the filter screen and the inner top wall of the shell, a dust reduction portion being provided on the side of the partition close to the exhaust pipe, a cyclone gas-liquid separator being provided on the side of the partition away from the exhaust pipe, an inlet pipe of the cyclone gas-liquid separator being fixedly passed through the partition, a drainage end of the cyclone gas-liquid separator being fixedly passed through the filter screen, and the exhaust pipe of the cyclone gas-liquid separator being fixedly passed through the inner top wall of the shell.

[0007] Furthermore, the dust reduction section includes a water pump and a storage box fixedly connected to the top wall of the shell, the storage box stores medicine, the water pump input end is communicated with the storage box, a plurality of connecting pipes are fixedly connected between the inner wall of the shell and the side wall of the partition, the connecting pipe is located below the input pipe of the cyclone type gas-liquid separator, the water pump output end is communicated with a plurality of the connecting pipes, an atomizing nozzle is fixedly installed at the bottom end of the connecting pipe, and the exhaust pipe is located below the atomizing nozzle.

[0008] Furthermore, a water level sensor is fixedly connected to the lower half of the inner wall of the shell, a drain pipe is fixedly penetrated through the inner bottom wall of the shell, an electromagnetic valve is arranged on the outer peripheral side of the drain pipe, and the water level sensor is electrically connected to the electromagnetic valve.

[0009] Furthermore, a through groove is provided on the side wall of the shell corresponding to the side shell, and the inner bottom wall of the through groove is coplanar with the inner bottom wall of the side shell. The exhaust pipe can be divided into two sections of ventilation pipes and one section of heat conduction pipe. The heat conduction pipe is fixedly connected between the two sections of ventilation pipes, and the heat conduction pipe is communicated with the ventilation pipe. The heat conduction pipe is located in the side shell, and two air supply pipes are fixedly penetrated on the upper half of the side wall of the side shell. The air supply pipes are fixedly passed through the lower half of the side wall of the shell, and the side wall of the air supply pipe is fixedly connected with a cooling component.

[0010] Furthermore, the top surface of the filter is arranged to be inclined downward on a side close to the side shell.

[0011] Furthermore, the heat conducting pipes are arranged in a serpentine shape, and the heat conducting pipes are completely located inside the side shell, and the ventilation pipes are completely located outside the side shell.

[0012] In summary, the present invention includes at least one of the following beneficial technical effects:

[0013] 1. This is a high-efficiency dust removal device for a recycled aluminum smelting and casting workshop. Exhaust gas enters the shell through the exhaust pipe, and the solid particles become heavier and fall to the top of the filter screen after being sprayed with chemicals in the dust reduction part. The gas and the entrained chemicals move upward into the cyclone gas-liquid separator for gas-liquid separation. The chemicals are discharged from the drainage end of the cyclone gas-liquid separator and fall to the lower half of the shell. At the same time, the excess chemicals sprayed from the atomizing nozzle and the chemicals attached to the solid particles can also pass through the filter screen and move to the lower half of the shell, thereby recovering the chemicals and reducing the waste of chemicals.

[0014] 2. This is a high-efficiency dust removal device for a recycled aluminum smelting and casting workshop. After the solid particles fall onto the filter, they move along the top surface of the filter to the side shell. The heat pipe transfers the heat in the exhaust gas just discharged from the smelting and casting workshop to the side shell, so that the reagent adsorbed on the solid particles and unable to fall freely is heated up and turned into gas, which is discharged from the gas pipeline. After being cooled by the cooling component, it is liquefied into reagent and moves to the lower half of the shell, thereby further improving the recovery rate of the reagent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 is a three-dimensional diagram of a high-efficiency dust removal device for a secondary aluminum casting workshop of this embodiment;

[0017] Figure 2 This is a front cross-sectional view of a high-efficiency dust removal device for a secondary aluminum casting workshop of this embodiment;

[0018] Figure 3 It is a side sectional view of a side shell of a high-efficiency dust removal device in a secondary aluminum casting workshop of this embodiment.

[0019] In the figure, 1. exhaust pipe; 2. shell; 3. side shell; 4. filter; 5. partition; 6. dust suppression unit; 61. water pump; 62. storage box; 63. connecting pipe; 64. atomizing nozzle; 7. cyclone gas-liquid separator; 8. water level sensor; 9. solenoid valve; 10. through groove; 11. ventilation pipe; 12. heat transfer pipe; 13. gas transmission pipe; 14. cooling component. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Example:

[0022] Reference Figures 1 to 3 The utility model discloses a high-efficiency dust removal device for a recycled aluminum smelting and casting workshop, including an exhaust pipe 1 connected to the smelting and casting workshop, and also includes a shell 2 located on one side of the smelting and casting workshop, and the side wall of the shell 2 is fixedly connected to a side shell 3, the exhaust pipe 1 is fixedly passed through the side shell 3, and the end of the exhaust pipe 1 away from the smelting and casting workshop extends to the upper half of the shell 2.

[0023] A filter screen 4 is fixedly connected to the lower half of the shell 2, a partition 5 is fixedly connected between the filter screen 4 and the inner top wall of the shell 2, and a dust suppression unit 6 is provided on the side of the partition 5 close to the exhaust pipe 1. A cyclone gas-liquid separator 7 is provided on the side of the partition 5 away from the exhaust pipe 1, the input pipe of the cyclone gas-liquid separator 7 is fixedly passed through the partition 5, the drainage end of the cyclone gas-liquid separator 7 is fixedly passed through the filter screen 4, and the exhaust pipe 1 of the cyclone gas-liquid separator 7 is fixedly passed through the inner top wall of the shell 2.

[0024] In this embodiment, the exhaust gas generated by the casting workshop will enter the housing 2 through the exhaust pipe 1. The aperture of the filter 4 can block solid particles without blocking the reagents.

[0025] The cyclone gas-liquid separator 7 uses a DN150 stainless steel cyclone gas-liquid separator manufactured by Xinxiang Matt Filtration Equipment Co., Ltd., which is also known as a gas-water separator, oil-water separator, gas-liquid separator and precision filter, etc., which can separate liquid from gas.

[0026] The exhaust gas enters the shell 2 and is processed by the dust reduction section 6. The solid particles fall to the top of the filter 4. The gas and the agent enter the cyclone gas-liquid separator 7 from the input pipe of the cyclone gas-liquid separator 7 for gas-liquid separation. The gas is discharged from the exhaust pipe 1 of the cyclone gas-liquid separator 7 to the external environment. The agent is discharged from the drainage end of the cyclone gas-liquid separator 7 and falls to the position below the filter 4 in the shell 2 for storage.

[0027] In a further preferred embodiment of the present invention, Figure 2 As shown, the dust reduction section 6 includes a water pump 61 and a storage box 62 fixedly connected to the top wall of the shell 2. The storage box 62 stores medicine. The input end of the water pump 61 is connected to the storage box 62. A plurality of connecting pipes 63 are fixedly connected between the inner wall of the shell 2 and the side wall of the partition 5. The connecting pipe 63 is located below the input pipe of the cyclone gas-liquid separator 7. The output end of the water pump 61 is connected to the plurality of connecting pipes 63. An atomizing nozzle 64 is fixedly penetrated at the bottom end of the connecting pipe 63, and the exhaust pipe 1 is located below the atomizing nozzle 64.

[0028] In this embodiment, the water pump 61 works to extract the medicine in the storage box 62 and transport it to the connecting pipe 63, and finally forms a gas mist through the atomizing nozzle 64 and contacts the exhaust gas entering the housing 2 through the exhaust pipe 1. The solid particles in the exhaust gas become sludged after being stained with the medicine, and then fall on the filter 4. The harmful gas in the exhaust gas will react with the medicine to neutralize the exhaust gas, thereby purifying the exhaust gas. The purified gas will continue to rise with part of the medicine and enter the cyclone gas-liquid separator 7 from the input pipe of the cyclone gas-liquid separator 7.

[0029] The excess medicine sprayed from the atomizing nozzle 64 and the medicine attached to the solid particles can pass through the filter screen 4 and move to the lower half of the shell 2, so as to recover the medicine.

[0030] Most of the harmful gases in the exhaust gas of the aluminum smelting and casting workshop are acidic gases, so the reagent can be selected as a weak alkaline solution. The specific type is selected based on the actual situation and economic efficiency. This method is more common in the treatment of aluminum smelting and casting exhaust gas, so I will not go into details here.

[0031] In a further preferred embodiment of the present invention, Figure 2 As shown, a water level sensor 8 is fixedly connected to the lower half of the inner wall of the shell 2, a drainage pipe is fixedly penetrated through the inner bottom wall of the shell 2, an electromagnetic valve 9 is arranged on the outer peripheral side of the drainage pipe, and the water level sensor 8 is electrically connected to the electromagnetic valve 9.

[0032] In this embodiment, when the water level sensor 8 detects that the amount of medicine stored in the housing 2 is too large, the controller controls the solenoid valve 9 to open and release the medicine in the housing 2. A transport medicine box is placed at the bottom of the housing 2 corresponding to the discharge pipe to receive the discharged medicine.

[0033] In a further preferred embodiment of the present invention, Figure 2 As shown, a through groove 10 is opened at the side wall of the shell 2 corresponding to the side shell 3, and the inner bottom wall of the through groove 10 is coplanar with the inner bottom wall of the side shell 3. The exhaust pipe 1 can be divided into two sections of ventilation pipes 11 and a section of heat conduction pipe 12. The heat conduction pipe 12 is fixedly connected between the two sections of ventilation pipes 11, and the heat conduction pipe 12 is communicated with the ventilation pipe 11. The heat conduction pipe 12 is located in the side shell 3, and two air pipes 13 are fixedly penetrated on the upper half of the side wall of the side shell 3. The air pipe 13 is fixedly passed through the lower half of the side wall of the shell 2, and the side wall of the air pipe 13 is fixedly connected with a cooling component 14.

[0034] In this embodiment, the solid particles falling on the top of the shell 2 can move into the side shell 3. The heat pipe 12 is made of aluminum material, and its heat radiation effect is good. Therefore, the exhaust gas just discharged from the casting workshop radiates heat to the outside when it moves to the heat pipe 12, so that the medicine that has not fallen on the solid particles in the side shell 3 is heated up and turned into gas. The gas rises and is discharged from the gas pipe 13. After being cooled by the cooling member 14, it is liquefied into medicine and moves to the lower half of the shell 2, thereby further improving the recovery rate of the medicine.

[0035] The cooling element 14 includes a semiconductor refrigeration sheet, the cold end of which is connected to a plurality of heat-conducting rods, which are made of copper and fixed through the outer wall of the gas delivery pipe 13 and extend to the inside of the input pipe, directly contacting the gas formed by the medicine. The hot end of the semiconductor refrigeration sheet is provided with a heat dissipation silicon sheet to accelerate heat dissipation, thereby improving the cooling effect.

[0036] In a further preferred embodiment of the present invention, Figure 2 As shown, the top surface of the filter screen 4 is arranged to be inclined downward on the side close to the side shell 3 .

[0037] In this embodiment, the solid particles falling onto the top of the filter screen 4 can easily and fully move into the side shell 3, ensuring that the solid particles can be heated.

[0038] In a further preferred embodiment of the present invention, Figure 3 As shown, the heat conducting pipes 12 are arranged in a serpentine shape, and the heat conducting pipes 12 are completely located inside the side shell 3 , and the ventilation pipes 11 are completely located outside the side shell 3 .

[0039] In this embodiment, the serpentine arrangement of the heat pipe 12 increases the length of the heat pipe 12 in the side shell 3, thereby increasing the degree of heat transfer from the exhaust gas to the side shell 3, thereby increasing the heating effect of the solid particles. The heat pipe 12 is completely located in the side shell 3, reducing the degree of heat dissipation from the exhaust gas to the external environment during transmission.

[0040] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high-efficiency dust removal device for a secondary aluminum casting workshop, comprising an exhaust pipe (1) connected to the casting workshop, characterized in that: It also comprises a shell (2) located at one side of the melting and casting workshop, the side wall of the shell (2) is fixedly connected to a side shell (3), the exhaust pipe (1) is fixedly passed through the side shell (3), and the end of the exhaust pipe (1) away from the melting and casting workshop extends to the upper half of the shell (2), the lower half of the shell (2) is fixedly connected to a filter screen (4), a partition (5) is fixedly connected between the filter screen (4) and the inner top wall of the shell (2), a dust removal part (6) is arranged on the side of the partition (5) close to the exhaust pipe (1), a cyclone gas-liquid separator (7) is arranged on the side of the partition (5) away from the exhaust pipe (1), an inlet pipe of the cyclone gas-liquid separator (7) is fixedly passed through the partition (5), a drainage end of the cyclone gas-liquid separator (7) is fixedly passed through the filter screen (4), and the exhaust pipe (1) of the cyclone gas-liquid separator (7) is fixedly passed through the inner top wall of the shell (2).

2. The high-efficiency dust removal device for a secondary aluminum casting workshop according to claim 1 is characterized in that: The dust removal section (6) comprises a water pump (61) and a storage box (62) fixedly connected to the top wall of the shell (2), wherein the storage box (62) stores medicine, and the input end of the water pump (61) is connected to the storage box (62). A plurality of connecting pipes (63) are fixedly connected between the inner wall of the shell (2) and the side wall of the partition (5), and the connecting pipes (63) are located below the input pipe of the cyclone gas-liquid separator (7). The output end of the water pump (61) is connected to the plurality of connecting pipes (63), and an atomizing nozzle (64) is fixedly penetrated at the bottom end of the connecting pipe (63). The exhaust pipe (1) is located below the atomizing nozzle (64).

3. The high-efficiency dust removal device for a secondary aluminum casting workshop according to claim 2 is characterized in that: A water level sensor (8) is fixedly connected to the lower half of the inner wall of the shell (2), a liquid discharge pipe is fixedly penetrated through the inner bottom wall of the shell (2), an electromagnetic valve (9) is arranged on the outer peripheral side of the liquid discharge pipe, and the water level sensor (8) is electrically connected to the electromagnetic valve (9).

4. The high-efficiency dust removal device for a secondary aluminum casting workshop according to claim 3 is characterized in that: A through groove (10) is provided on the side wall of the shell (2) corresponding to the side shell (3); the inner bottom wall of the through groove (10) is coplanar with the inner bottom wall of the side shell (3); the exhaust pipe (1) can be divided into two sections of ventilation pipes (11) and one section of heat conduction pipe (12); the heat conduction pipe (12) is fixedly connected between the two sections of ventilation pipes (11), and the heat conduction pipe (12) communicates with the ventilation pipe (11); the heat conduction pipe (12) is located in the side shell (3); two air delivery pipes (13) are fixedly penetrated through the upper half of the side wall of the side shell (3); the air delivery pipes (13) are fixedly passed through the lower half of the side wall of the shell (2), and the side wall of the air delivery pipe (13) is fixedly connected with a cooling component (14).

5. The high-efficiency dust removal device for a secondary aluminum casting workshop according to claim 4 is characterized in that: The top surface of the filter screen (4) is arranged to be inclined downward on a side close to the side shell (3).

6. The high-efficiency dust removal device for a secondary aluminum casting workshop according to claim 5 is characterized in that: The heat conducting pipe (12) is arranged in a serpentine shape, and the heat conducting pipe (12) is completely located inside the side shell (3), and the ventilation pipe (11) is completely located outside the side shell (3).

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