Negative pressure dust collection device for electrolytic aluminum workshop

Abstract

The embodiment of the utility model discloses an electrolytic aluminum workshop negative pressure dust collection device which comprises an air exhaust assembly and a dust collection assembly, the air exhaust assembly comprises a main pipe and a plurality of branch pipes, the main pipe is installed outside the workshop, one end of the main pipe is connected with a negative pressure pump, one end of each branch pipe is communicated with the main pipe, and the other end of each branch pipe extends into the workshop; the dust suction assembly comprises air suction pipes and a dust suction cover, the air suction pipes are hoses, one end of each air suction pipe is detachably connected with the end, away from the main pipe, of the corresponding branch pipe, and the other end of each air suction pipe communicates with the dust suction cover. A worker extracts waste materials on the ground and the equipment by moving the dust collection cover, and the waste materials are collected into the main pipe to be collected.

Description

Technical Field

[0001] This application relates to the field of dust removal equipment technology, and in particular to a negative pressure dust collection device for an electrolytic aluminum workshop. Background Technology

[0002] Due to its light weight and corrosion resistance, aluminum and aluminum alloys are among the most widely used and economical materials. Currently, aluminum production and consumption (in tons) are second only to steel, making it the second most used metal by mankind.

[0003] Electrolytic aluminum, as one of the main ways to obtain aluminum for industrial use, is a process that extracts aluminum from bauxite. The entire production process can be divided into the following key steps: raw material preparation, electrolytic cell preparation, electrolysis, aluminum liquid extraction and casting, and refining, in order to obtain aluminum for industrial use.

[0004] In the raw material preparation stage, alumina (Al2O3) needs to be extracted from bauxite. Bauxite is transformed into alumina powder through steps such as crushing, grinding, and calcination.

[0005] In the electrolytic aluminum workshop, as the equipment operates for a long time, a layer of alumina powder will adhere to the surface of the equipment. This not only affects the on-site environment, but is also a waste. In the existing technology, personnel use compressed air to blow the waste to another place, which cannot fundamentally solve the problem of waste waste. At the same time, the waste flying during blowing seriously affects the workshop environment. Utility Model Content

[0006] This application provides a negative pressure dust collection device for an electrolytic aluminum workshop, which can collect the attached waste materials in the electrolytic aluminum workshop without affecting the workshop environment.

[0007] This application provides a negative pressure dust collection device for an electrolytic aluminum workshop. The dust collection device includes an air extraction component and a dust collection component. The air extraction component includes a main pipe and multiple branch pipes. The main pipe is installed outside the workshop and is connected to a negative pressure pump at one end. One end of each branch pipe is connected to the main pipe, and the other end extends into the workshop. The dust collection component includes an air suction pipe and a dust collection hood. The air suction pipe is a flexible hose. One end of the air suction pipe is detachably connected to the end of one of the branch pipes away from the main pipe, and the other end is connected to the dust collection hood.

[0008] Based on the dust collection device of this application embodiment, when personnel are processing waste materials in the electrolytic aluminum workshop, they connect the suction pipe to the branch pipe, start the negative pressure pump, and the personnel use the moving dust collection hood to extract the waste materials on the ground and equipment, collect them into the main pipe, and then collect them.

[0009] In some embodiments of this application, the main pipe has an air inlet communicating with the inner cavity of the main pipe at the end away from the negative pressure pump; the dust collection device further includes a scraping assembly, which includes a sealing plate and a scraper. Multiple sealing plates are provided, and one sealing plate moves on a branch pipe in a direction perpendicular to the axis of the branch pipe. The scraper is disposed inside the main pipe and is in sealed contact with the inner wall of the main pipe. The scraper is detachably connected to the main pipe. When the scraper is separated from the main pipe, the scraper can slide inside the main pipe in the axial direction of the main pipe under the suction of the negative pressure pump.

[0010] Based on the above embodiments, after all branch pipes are sealed by the sealing plate, the negative pressure pump is started. Due to the inconsistent air pressure on both sides of the hanging plate, the scraper cleans the inner wall of the main pipe as it moves toward the negative pressure pump. When cleaning is not required, the scraper is fixed to the main pipe. When the negative pressure pump is started, the scraper moves.

[0011] In some embodiments of this application, the scraper is provided with an annular scraper on the side of the main pipe facing the negative pressure pump along the axial direction of the main pipe, and the scraper is tangent to the inner wall of the main pipe.

[0012] Based on the above embodiments, it is convenient for the scraper to clean the side wall of the main pipe.

[0013] In some embodiments of this application, the scraper is provided with a plurality of conical spikes around the side of the main pipe facing the negative pressure pump along the axial direction of the main pipe. The plurality of conical spikes are distributed around the circumference of the scraper, the conical spikes are tangent to the inner wall of the main pipe, and the tips of the conical spikes are located on the side of the scraper blade away from the scraper.

[0014] Based on the above embodiments, when the waste material accumulation on the inner wall of the main pipe is relatively thick, the waste material is broken open by the cone, making it easier for the scraper to remove the waste material.

[0015] In some embodiments of this application, the scraper is provided with a threaded groove on the side away from the negative pressure pump.

[0016] Based on the above embodiments, the operator passes the push rod through the air inlet and connects it to the scraper disc via a thread, and drives the scraper disc to move by pushing the push rod.

[0017] In some embodiments of this application, the main pipe is provided with a plurality of cleaning pipes at intervals. The cleaning pipes are located below the main pipe, with one end connected to the main pipe and the other end sealed by a screw cap.

[0018] Based on the above embodiments, the waste material accumulated in front of the scraper naturally falls into the cleaning pipe, reducing the resistance to the scraper's forward movement. Personnel can then discharge the waste material from the cleaning pipe by rotating the cap.

[0019] In some embodiments of this application, a collection component is also included. The collection component includes a filter tube installed between the negative pressure pump and the main pipe. A filter screen is provided inside the filter tube. A collection port is provided below the filter screen on the side away from the negative pressure pump. The collection port is connected to a collection box.

[0020] Based on the above embodiments, during the startup of the negative pressure pump, the airflow in the main pipe passes through the filter screen and accumulates in front of the filter screen. When too much waste accumulates, or after the negative pressure pump stops working, the waste on the filter screen naturally falls into the collection box.

[0021] In some embodiments of this application, a cleaning assembly is also included, comprising a cleaning plate and an axial fan. The cleaning plate is located on the side of the filter screen near the negative pressure pump and is in contact with the filter screen. The projection of the cleaning plate on the filter screen is smaller than the surface of the filter screen. The axial fan is installed inside the filter tube and is rotatably connected to the filter tube on the same axis. The axial fan is fixed to the cleaning plate.

[0022] Based on the above embodiments, the airflow in the main pipe drives the axial fan to rotate, and the axial fan drives the cleaning plate to rotate, intermittently blocking part of the filter screen surface. At this time, due to the lack of negative pressure in the area where the filter screen is blocked, the waste material naturally falls into the collection box due to gravity. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a negative pressure dust collection device in an electrolytic aluminum workshop according to an embodiment of this application.

[0025] Figure 2 for Figure 1 A cross-sectional view;

[0026] Figure 3 for Figure 2 Enlarged diagram of part A in the diagram;

[0027] Figure 4 This is a partial structural schematic diagram of a negative pressure dust collection device for an electrolytic aluminum workshop, as described in an embodiment of this application.

[0028] Attached reference numerals: 01, Electrolytic aluminum workshop; 1, Exhaust assembly; 11, Main pipe; 111, Air inlet; 12, Negative pressure pump; 13, Branch pipe; 131, Insert slot; 14, Cleaning pipe; 15, Screw cap; 2, Dust collection assembly; 21, Suction pipe; 22, Dust hood; 3, Scraper assembly; 31, Sealing plate; 32, First drive component; 33, Scraper disc; 341, Threaded groove; 34, Scraper blade; 35, Conical spike; 4, Collection assembly; 41, Filter pipe; 42, Filter screen; 43, Collection box; 5, Cleaning assembly; 51, Cleaning plate; 52, Axial flow fan. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] In the relevant technical field, regarding waste disposal in electrolytic aluminum workshops, the method of using compressed air to blow the waste to another location cannot fundamentally solve the problem of waste waste. At the same time, the flying waste during blowing seriously affects the workshop environment.

[0031] To solve the above technical problems, please refer to Figure 1 and Figure 2 As shown, the first aspect of this application proposes a negative pressure dust collection device for an electrolytic aluminum workshop to collect waste materials in the workshop.

[0032] Please refer to Figure 1 and Figure 2 As shown, the dust collection device includes an air extraction component 1 and a dust collection component 2. The air extraction component 1 includes a main pipe 11 and multiple branch pipes 13. The main pipe 11 is installed outside the workshop and is connected to a negative pressure pump 12 at one end. One end of each branch pipe 13 is connected to the main pipe 11 and the other end extends into the workshop. The dust collection component 2 includes an air suction pipe 21 and a dust collection hood 22. The air suction pipe 21 is a flexible hose. One end of each air suction pipe 21 is detachably connected to the end of a branch pipe 13 away from the main pipe 11, and the other end is connected to the dust collection hood 22.

[0033] Personnel connect the suction pipe 21 to the branch pipe 13, start the negative pressure pump 12, and collect the waste in the workshop by moving the dust removal hood. The waste is collected by the negative pressure pump 12 for subsequent collection by personnel. In order to facilitate the connection between the suction pipe 21 and the branch pipe 13, a quick connector is provided at the end of the branch pipe 13 away from the main body. At the same time, a ball valve is provided on the section of each branch pipe 13 that is connected to the workshop so that personnel can control the closing of the branch pipe 13.

[0034] Please refer to Figure 1 , Figure 2 and Figure 3As shown, in some embodiments of this application, the end of the main pipe 11 away from the negative pressure pump 12 is provided with an air inlet 111 communicating with the inner cavity of the main pipe 11; the dust collection device also includes a scraping assembly 3, which includes a sealing plate 31 and a scraper 33. Multiple sealing plates 31 are provided, and one sealing plate 31 moves on a branch pipe 13 in a direction perpendicular to the axis of the branch pipe 13. The scraper 33 is disposed in the main pipe 11 and is in sealed contact with the inner wall of the main pipe 11. The scraper 33 is detachably connected to the main pipe 11. When the scraper 33 is separated from the main pipe 11, the scraper 33 can slide in the main pipe 11 in the axial direction of the main pipe 11 under the suction of the negative pressure pump 12. In this application, the scraper 33 is fixed to the main pipe 11 by bolts. During long-term use, due to the passage of a large amount of waste, a large amount of deposits are attached to the inner wall of the main pipe 11. When cleaning the deposits on the inner wall of the main pipe 11, the personnel first loosen the fixing screw between the scraper 33 and the main pipe 11, then seal the branch pipe 13, and start the negative pressure pump 12. At this time, the scraper 33 moves towards the negative pressure pump 12 in the main pipe 11 under the condition of different pressure difference on both sides, thereby cleaning the inner wall of the main pipe 11. After cleaning, the pressure is increased in the main pipe 11, so that the scraper 33 moves away from the negative pressure pump 12 and returns to the initial position. Then, the personnel fix the scraper 33 with bolts.

[0035] In order to open or close all branch pipes 13 at the same time, in some embodiments of this application, the branch pipes 13 are provided with insertion slots 131 with the same width as the inner diameter of the branch pipes 13 along the direction perpendicular to their axis. Multiple sealing plates 31 are provided. One sealing plate 31 slides in one insertion slot 131 along the direction of the insertion slot 131, thereby opening and closing the channel inside the branch pipes 13. In order to open or close all branch pipes 13 at the same time, all sealing plates 31 are connected to each other by connecting rods. In this application, the first driving member 32 is a cylinder. The body of the first driving member 32 is fixedly installed on the main pipe 11. The output shaft of the first driving member 32 is connected to the connecting rod, thereby driving the sealing plate 31 to move.

[0036] Please refer to Figure 3 As shown, in some embodiments of this application, the scraper 33 is provided with an annular scraper 34 on the side of the main pipe 11 facing the negative pressure pump 12 along the axial direction of the main pipe 11, and the scraper 34 is tangential to the inner wall of the main pipe 11. In this way, the scraper 33 scrapes up the waste material adhering to the inner wall of the main pipe 11 as it moves forward.

[0037] Please refer to Figure 2As shown in some embodiments of this application, the scraper 33 is provided with a plurality of conical spikes 35 circumferentially along the side of the main pipe 11 facing the negative pressure pump 12. The plurality of conical spikes 35 are distributed circumferentially along the scraper 33, and the conical spikes 35 are tangential to the inner wall of the main pipe 11, with the tips of the conical spikes 35 located on the side of the scraper 34 away from the scraper 33. When the deposits on the inner wall of the main pipe 11 are relatively hard, during the forward movement of the scraper 33, the conical spikes 35 first break the deposits on the inner wall of the main pipe 11, and then the scraper 34 scoops up the deposits.

[0038] Please refer to Figure 3 As shown, in some embodiments of this application, the scraper 33 has a threaded groove 341 on the side away from the negative pressure pump 12. A push rod is threaded into the threaded groove 341 to drive the scraper 33, thereby enhancing the versatility of the scraper 33's movement.

[0039] Please refer to Figure 3 As shown in some embodiments of this application, a plurality of cleaning pipes 14 are provided at intervals on the main pipe 11. The cleaning pipes 14 are located below the main pipe 11, with one end connected to the main pipe 11 and the other end sealed by a cap 15. As the scraper 33 advances further, more material accumulates on one side of the scraper 33's forward direction, affecting the scraper 33's advance. When the scraper 33 moves to the cleaning pipe 14, the waste material in front of the scraper 33 is pushed into the cleaning pipe 14, reducing the accumulation of material in front of the scraper 33. Subsequently, personnel can open the cap 15 to discharge the accumulation in the cleaning pipe 14. To prevent the scraper 33 from falling into the cleaning pipe 14, the inner diameter of the cleaning pipe 14 is smaller than the axial length of the scraper 33.

[0040] Please refer to Figure 1 and Figure 4 As shown, in some embodiments of this application, a collection component 4 is also included. The collection component 4 includes a filter tube 41, which is installed between the negative pressure pump 12 and the main pipe 11. A filter screen 42 is disposed inside the filter tube 41. A collection port is opened below the filter screen 42 on the side away from the negative pressure pump 12, and the collection port is connected to a collection box 43. When waste in the gas passes through the filter screen 42, it is blocked by the filter screen 42. When the negative pressure pump 12 stops, or when there is a large accumulation of material on the filter screen 42, it falls naturally into the collection box 43 by gravity, thereby collecting the waste in the main pipe 11.

[0041] Please refer to Figure 4As shown, in some embodiments of this application, a cleaning component 5, a cleaning component 5 plate, and an axial flow fan 52 are also included. The cleaning plate 51 is located on the side of the filter screen 42 near the negative pressure pump 12 and is in contact with the filter screen 42. The projection of the cleaning plate 51 on the filter screen 42 is smaller than the surface of the filter screen 42. The axial flow fan 52 is installed inside the filter tube 41 and is coaxially rotatably connected to the filter tube 41. The axial flow fan 52 is fixed to the cleaning plate 51. When the negative pressure pump 12 is working, the airflow in the main pipe 11 drives the axial flow fan 52 to rotate, and the axial flow fan 52 drives the cleaning plate 51 to rotate. The cleaning plate 51 intermittently blocks the area on the filter screen 42. The waste on the filter screen 42 in the blocked area falls naturally into the collection box 43 by gravity to avoid clogging of the filter screen 42.

[0042] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application 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. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0043] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A negative pressure dust collection device for an electrolytic aluminum workshop, characterized in that, include: An exhaust assembly includes a main pipe and multiple branch pipes. The main pipe is installed outside the workshop and connected to a negative pressure pump at one end. One end of each branch pipe is connected to the main pipe, and the other end extends into the workshop. A vacuuming assembly includes a suction pipe and a vacuum hood. The suction pipe is a flexible hose. One end of the suction pipe is detachably connected to the end of a branch pipe away from the main pipe, and the other end is connected to the vacuum hood. The main pipe has an air inlet communicating with the inner cavity of the main pipe at the end furthest from the negative pressure pump; the dust collection device further includes: The scraping assembly includes a sealing plate and a scraper. Multiple sealing plates are provided, and one sealing plate moves on a branch pipe in a direction perpendicular to the axis of the branch pipe. The scraper is disposed inside the main pipe and is in sealing contact with the inner wall of the main pipe. The scraper is detachably connected to the main pipe. When the scraper is separated from the main pipe, the scraper can slide inside the main pipe in the axial direction of the main pipe under the suction of the negative pressure pump. The scraper disc is provided with an annular scraper on the side of the main pipe facing the negative pressure pump along the axial direction of the main pipe, and the scraper is tangent to the inner wall of the main pipe; The scraper is provided with a plurality of conical spikes around the side of the main pipe facing the negative pressure pump along the axial direction of the main pipe. The plurality of conical spikes are distributed around the circumference of the scraper. The conical spikes are tangent to the inner wall of the main pipe, and the tips of the conical spikes are located on the side of the scraper blade away from the scraper. The scraper has a threaded groove on the side away from the negative pressure pump.

2. The dust collection device as described in claim 1, characterized in that, The main pipe is provided with multiple cleaning pipes at intervals. The cleaning pipes are located below the main pipe, with one end connected to the main pipe and the other end sealed by a screw cap.

3. The dust collection device as described in claim 1, characterized in that, Also includes: The collection component includes a filter tube installed between the negative pressure pump and the main pipe. A filter screen is provided inside the filter tube, and a collection port is provided below the filter screen on the side away from the negative pressure pump. The collection port is connected to a collection box.

4. The dust collection device as described in claim 3, characterized in that, Also includes: The cleaning assembly includes a cleaning plate and an axial fan. The cleaning plate is located on the side of the filter screen near the negative pressure pump and is in contact with the filter screen. The projection of the cleaning plate on the filter screen is smaller than the surface of the filter screen. The axial fan is installed inside the filter tube and is rotatably connected to the filter tube on the same axis. The axial fan is fixed to the cleaning plate.

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