A dust recycling system in an alumina production process and a method of using the same

Abstract

The application discloses an alumina production process dust recycling system, including collector shell, the top and bottom of the collector shell are open, and the top and bottom of the collector shell are respectively rotatably installed with an upper baffle and a lower baffle, a dust filter inner container is installed in the collector shell, the collector shell further comprises an inner container cleaning mechanism, a gas extractor is installed on one side of the collector shell, the gas inlet of the gas extractor is communicated with the collector shell, the upper baffle is provided with a gas inlet, and the gas inlet is connected with a gas inlet hose. In the application, the first rotary motor can synchronously drive the upper baffle and the lower baffle to rotate, the two ends of the collector shell are opened, the collected dust is automatically discharged from the lower end, the dust removal state and the discharge cleaning state can be quickly switched, the collected dust can be more conveniently stored and recycled, and the dust filter inner container can be conveniently cleaned and replaced.

Description

Technical Field

[0001] This invention relates to the field of alumina production technology, and in particular to a dust recovery and utilization system and its application method in alumina production process. Background Technology

[0002] Alumina powder is made from industrial aluminum hydroxide or industrial alumina as raw materials, and is produced by high-temperature calcination with different formulations. Alumina powder is a white amorphous powder that is difficult to dissolve in water. It is odorless, tasteless, chemically stable, highly pure, has a high specific gravity, and good insulation properties. When used in ceramics, alumina can be divided into calcined alumina and ordinary industrial alumina. Calcined alumina is an essential raw material for the production of antique bricks. Alumina powder is often used as a medium for chromatography.

[0003] The production process of alumina powder generates a large amount of dust. Although alumina powder is not very harmful to the human body, it is classified as low-risk for inhalation, but it can easily cause Alzheimer's disease. Inhalation may cause irritation or lung damage. Skin contact and eye contact are classified as low-risk. To ensure the safety of workers in the workshop, a dust removal system needs to be installed to ensure that alumina powder does not float in the air for too long.

[0004] In existing dust removal devices, the collected dust cannot be easily discharged and reused, and the filter components will accumulate a lot of dust. After long-term use, the filtration effect will be weakened, and the filter components cannot be easily cleaned and maintained. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a dust recovery and utilization system and its application method in an alumina production process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dust recovery and utilization system for an alumina production process includes a collector shell, the top and bottom of which are open, and an upper baffle and a lower baffle are rotatably installed at the top and bottom of the collector shell, respectively. A dust filter liner is installed inside the collector shell, and the collector shell also includes a liner cleaning mechanism. An exhaust fan is installed on one side of the collector shell, and the air inlet of the exhaust fan is connected to the collector shell. An air inlet is provided on the upper baffle.

[0008] Preferably, an air inlet hose is connected to the air inlet, and a dust collection cover is fixed to the end of the air inlet hose away from the collector housing.

[0009] Preferably, the inside of the collector shell is fixed with a mounting frame, the dust filtering inner container is fixed in the mounting frame, a vertical shaft is rotatably mounted on the mounting frame through a support, and the upper baffle and the lower baffle are fixed at the top end and the bottom end of the vertical shaft, respectively.

[0010] Preferably, a first rotary motor is arranged on one side of the vertical shaft, the output shaft of the first rotary motor is fixed with a first gear, and a second gear is fixed on the outside of the vertical shaft, and the first gear is engaged with the second gear.

[0011] Preferably, the air inlet hose is in communication with the inside of the dust filtering inner container, the dust filtering inner container has a cylindrical structure, and the air inlet of the air extractor is directly communicated with the outside of the dust filtering inner container.

[0012] Preferably, the inner container cleaning mechanism comprises a gas cylinder, the output end of the gas cylinder is fixed with a lifting support, a second rotary motor is mounted on the lifting support, the output end of the second rotary motor is fixed with a cleaning brush, and the bristles of the cleaning brush are in contact with the inner wall of the dust filtering inner container.

[0013] Preferably, the top end and the bottom end of the mounting frame are fixed with a plurality of limiting clamping plates, and the limiting clamping plates have an arc-shaped structure.

[0014] Preferably, the plurality of limiting clamping plates are uniformly distributed in a ring shape on the inner wall of the mounting frame, and a gap is left between the limiting clamping plates and the inner wall of the mounting frame, and the top end and the bottom end of the dust filtering inner container extend into the gap.

[0015] A method for using a dust recycling system in an alumina production process, comprising the following steps:

[0016] S1: Dust removal state, the upper baffle and the lower baffle are located directly above and below the collector shell, at this time, the dust collecting cover is moved to the machining station and fixed, the air extractor is started, and negative pressure is generated in the inside of the collector shell, so that the dust particles generated in the production process are sucked into the collector shell from the air inlet hose;

[0017] S2: The crushed dust directly enters the dust filtering inner container, the dust filtering inner container is provided with filter mesh holes, which can block the dust, so that the dust is left in the dust filtering inner container and is gathered, and finally falls onto the lower baffle at the bottom end of the collector shell;

[0018] S3: Discharge and cleaning state, the first rotary motor is started to drive the first gear to rotate, and then the first gear and the second gear are engaged to drive the vertical shaft to rotate, so that the upper baffle and the lower baffle can be synchronously rotated, both ends of the collector shell are opened, and the collected dust is automatically discharged from the lower end;

[0019] S4: Since the dust still remains on the inner wall of the dust filtering inner container, the air cylinder is controlled to shorten, so that the cleaning brush is extended into the interior of the dust filtering inner container, and then the cleaning brush is driven to rotate along the inner wall of the dust filtering inner container by the second rotary motor, so that the dust remaining on the dust filtering inner container is removed and falls from the lower end.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] 1. The first rotary motor can drive the upper baffle and the lower baffle to rotate synchronously, so that both ends of the collector shell are opened, and the collected dust is automatically discharged from the lower end. At this time, the air cylinder is controlled to shorten, so that the cleaning brush is extended into the interior of the dust filtering inner container, and then the cleaning brush is driven to rotate along the inner wall of the dust filtering inner container by the second rotary motor, so that the dust remaining on the dust filtering inner container is removed and falls from the lower end. The dust collecting state and the discharge cleaning state can be quickly switched, the collected dust can be more conveniently stored and recycled, and the dust filtering inner container can be conveniently cleaned and replaced.

[0022] 2. The locking mechanism is additionally arranged, so that the dust filtering inner container is tightly pressed against the inner wall of the mounting frame, so as to lock the dust filtering inner container, so that the dust filtering inner container is more closely attached to the mounting frame, the gap is reduced, the dust is effectively prevented from flowing into the air extractor from the gap during dust extraction, the air extractor is protected, and the dust filtering effect is enhanced. When the short shaft of the locking cam faces the dust filtering inner container, the locking cam is separated from the dust filtering inner container, so that the dust filtering inner container can be manually removed, and the dust filtering inner container can be conveniently cleaned.

[0023] 3. When the vertical shaft rotates, the locking cam is driven to rotate in a transmission mode, so that when the upper baffle and the lower baffle are closed, the locking cam automatically locks the dust filtering inner container, so as to ensure the airtightness of the dust filtering inner container during dust extraction. When the upper baffle and the lower baffle are opened, the locking cam automatically releases the dust filtering inner container, so as to facilitate cleaning and disassembly and replacement of the dust filtering inner container. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 It is a first perspective view of the cleaning and discharge state of the present application.

[0026] Figure 2The second perspective view of the cleaning discharge state of the application;

[0027] Figure 3 The perspective view of the dust extraction state of the application;

[0028] Figure 4 The schematic view of the internal structure of the collector shell of the application;

[0029] Figure 5 The Figure 4 The enlarged detail view of the middle A position;

[0030] Figure 6 The top view of the locking mechanism of the application;

[0031] Figure 7 The perspective view of the locking mechanism of the application;

[0032] Figure 8 The Figure 7 The enlarged detail view of the middle B position;

[0033] Figure 9 The schematic view of the separation state of the mounting frame and the dust filter inner container of the application;

[0034] Figure 10 The enlarged detail view of the mounting frame of the application;

[0035] Figure 11 The Figure 10 The enlarged detail view of the middle C position;

[0036] In the figure: 1 collector shell, 101 upper baffle, 102 lower baffle, 103 air inlet hose, 104 dust collecting cover, 105 air extractor, 106 dust filter inner container, 2 air cylinder, 201 lifting support, 202 second rotary motor, 203 cleaning brush, 3 mounting frame, 301 vertical shaft, 302 first rotary motor, 303 first gear, 304 second gear, 305 limiting clamping plate, 4 locking cam, 401 third gear, 402 fourth gear, 403 synchronous gear ring, 404 five-gear. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the application clearer, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0038] Embodiment 1

[0039] With reference to Figures 1-11The utility model provides a dust recycling system in alumina production process, including collector shell 1, the top and bottom of collector shell 1 are open, and the top and bottom of collector shell 1 are rotatably installed with upper baffle 101 and lower baffle 102 respectively, the inside of collector shell 1 is installed with dust filter inner bag 106, and collector shell 1 also includes inner bag cleaning mechanism, one side of collector shell 1 is installed with air extractor 105, the gas inlet of air extractor 105 is communicated with collector shell 1, the gas inlet is formed on upper baffle 101, and the gas inlet is connected with air inlet hose 103, and the one end of air inlet hose 103 away from collector shell 1 is fixed with dust collecting cover 104.

[0040] When dusting, upper baffle 101 and lower baffle 102 are located directly above and below collector shell 1, at this time, dust collecting cover 104 is moved to the processing station and fixed, air extractor 105 is started, and the negative pressure is generated in the inside of collector shell 1, the dust particles generated in the production process are sucked into collector shell 1 from air inlet hose 103, and the dust particles are directly crushed into dust filter inner bag 106, the filter screen hole is arranged on dust filter inner bag 106, the dust is blocked, the dust is kept in dust filter inner bag 106 and gathered, and finally falls on lower baffle 102 at the bottom of collector shell 1.

[0041] Embodiment 2

[0042] Reference Figures 1-11 The difference between the embodiment and embodiment 1 is that the inside of collector shell 1 is fixedly provided with mounting frame 3, dust filter inner bag 106 is fixed in mounting frame 3, mounting frame 3 is rotatably provided with vertical shaft 301 through the support, upper baffle 101 and lower baffle 102 are fixed at the top and bottom of vertical shaft 301 respectively, the side of vertical shaft 301 is provided with first rotary motor 302, the output shaft of first rotary motor 302 is fixedly provided with first gear 303, the outside of vertical shaft 301 is fixedly provided with second gear 304, and first gear 303 is engaged with second gear 304.

[0043] When discharging and cleaning, first rotary motor 302 is started to drive first gear 303 to rotate, first gear 303 is engaged with second gear 304, vertical shaft 301 is driven to rotate, and upper baffle 101 and lower baffle 102 are synchronously driven to rotate, so that the two ends of collector shell 1 are opened, and the collected dust is automatically discharged from the lower end.

[0044] The inside of air inlet hose 103 is communicated with the inside of dust filter inner bag 106, dust filter inner bag 106 is in the cylindrical structure, and the gas inlet of air extractor 105 is directly communicated with the outside of dust filter inner bag 106.

[0045] The inner container cleaning mechanism comprises a gas cylinder 2, the output end of the gas cylinder 2 is fixed with a lifting support 201, the lifting support 201 is provided with a second rotary motor 202, the output end of the second rotary motor 202 is fixed with a cleaning brush 203, and the bristles of the cleaning brush 203 are in contact with the inner wall of the dust filtering inner container 106.

[0046] Since dust still remains on the inner wall of the dust filtering inner container 106, the gas cylinder 2 is controlled to be shortened, so that the cleaning brush 203 is inserted into the inside of the dust filtering inner container 106, and then the second rotary motor 202 drives the cleaning brush 203 to rotate along the inner wall of the dust filtering inner container 106, so that the dust remaining on the dust filtering inner container 106 is removed and falls from the lower end.

[0047] The top end and the bottom end of the mounting frame 3 are fixed with a plurality of limiting clamping plates 305, and the limiting clamping plates 305 are in an arc-shaped structure.

[0048] The plurality of limiting clamping plates 305 are uniformly distributed in a ring shape on the inner wall of the mounting frame 3, and a gap is left between the limiting clamping plates 305 and the inner wall of the mounting frame 3, and the top end and the bottom end of the dust filtering inner container 106 extend into the gap.

[0049] When the dust filtering inner container 106 is installed, the top end and the bottom end of the dust filtering inner container 106 are inserted into the gap between the limiting clamping plates 305 and the mounting frame 3, and the shape of the limiting clamping plates 305 can uniformly press the dust filtering inner container 106 in the inside of the mounting frame 3.

[0050] Embodiment 3

[0051] Reference Figures 1-11The difference between the embodiment and embodiment 2 is that the top end and the bottom end of the mounting frame are provided with locking mechanisms, the locking mechanisms are used for fixing the dust filtering inner container 106, the locking mechanism comprises a locking cam 4, the top end of the locking cam 4 is fixed with a third gear 401, a synchronous gear ring 403 is rotatably mounted on the mounting frame 3 through an annular guide rail, the locking cam 4 is provided with a plurality of annularly uniform distribution, and the plurality of third gears 401 are all in meshing with the synchronous gear ring 403, wherein when one of the third gears 401 rotates, the other third gears 401 will follow the synchronous rotation, so that the synchronous rotation of the plurality of locking cams 4 can be ensured, when the long axis of the locking cam 4 faces the dust filtering inner container 106, the dust filtering inner container 106 can be tightly pressed on the inner wall of the mounting frame 3, so as to achieve the purpose of locking the dust filtering inner container 106, so that the dust filtering inner container 106 can be more closely attached to the mounting frame 3, the gap is reduced, the dust can be effectively prevented from flowing into the air extractor 105 from the gap during the dust extraction process, the air extractor 105 can be protected, and the filtering effect of the dust is also enhanced, when the short axis of the locking cam 4 faces the dust filtering inner container 106, the locking cam 4 is separated from the dust filtering inner container 106, so that the dust filtering inner container 106 can be manually removed, and the dust filtering inner container 106 can be conveniently cleaned.

[0052] Embodiment 4

[0053] Reference Figures 1-11 The difference between the embodiment and embodiment 3 is that the top end of one of the third gears 401 is also fixed with a fourth gear 402, and a fifth gear 404 is fixed on the vertical shaft 301, the fourth gear 402 is in meshing with the fifth gear 404, when the vertical shaft 301 rotates, the locking cam 4 can be driven to rotate in a transmission mode, so when the upper baffle 101 and the lower baffle 102 are closed, the locking cam 4 automatically locks the dust filtering inner container 106, so as to ensure the airtightness of the dust filtering inner container 106 during the dust extraction process, when the upper baffle 101 and the lower baffle 102 are opened, the locking cam 4 automatically releases the dust filtering inner container 106, so as to facilitate cleaning and disassembly and replacement of the dust filtering inner container 106.

[0054] Embodiment 5

[0055] A method for using a dust recycling system in an alumina production process, comprising the following steps:

[0056] S1: Dust removal state, the upper baffle 101 and the lower baffle 102 are located above and below the collector shell 1, at this time, the dust collecting cover 104 is moved to the machining station and fixed, the air extractor 105 is started, and negative pressure can be generated in the inside of the collector shell 1, so that the dust particles generated in the production process are sucked into the collector shell 1 from the air inlet hose 103;

[0057] S2: The crushed dust directly enters the dust filtering inner container 106, the dust filtering inner container 106 is provided with filter mesh holes, which can block the dust, so that the dust is left in the dust filtering inner container 106 and is gathered, and finally falls on the lower baffle 102 at the bottom end of the collector shell 1;

[0058] S3: Discharge the cleaning state, start the first rotary motor 302 to drive the first gear 303 to rotate, and then drive the vertical shaft 301 to rotate through the meshing of the first gear 303 and the second gear 304, so that the upper baffle 101 and the lower baffle 102 can be synchronously driven to rotate, the two ends of the collector shell 1 are opened, and the collected dust is automatically discharged from the lower end;

[0059] S4: Since the dust remains on the inner wall of the dust filtering inner container 106, the cleaning brush 203 can be extended into the inside of the dust filtering inner container 106 by controlling the cylinder 2 to be shortened, and then the cleaning brush 203 is continuously rotated along the inner wall of the dust filtering inner container 106 by the second rotary motor 202, so that the dust remaining on the dust filtering inner container 106 can be removed and falls from the lower end.

[0060] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0061] In the present application, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, can be directly connected, or indirectly connected through an intermediate medium, can be the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0062] The control mode of the present application is automatically controlled by a controller, and the control circuit of the controller can be realized by simple programming of those skilled in the art, and the power supply also belongs to the common knowledge in the art, and the present application is mainly used to protect mechanical devices, so the control mode and circuit connection of the present application will not be explained in detail.

[0063] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A dust recovery and utilization system in an alumina production process, comprising a collector housing (1), characterized in that: The top and bottom of the collector housing (1) are open, and the top and bottom of the collector housing (1) are respectively rotatably mounted with an upper baffle (101) and a lower baffle (102). The collector housing (1) is equipped with a dust filter liner (106) inside. The collector housing (1) also includes a liner cleaning mechanism. An air extractor (105) is installed on one side of the collector housing (1). The air inlet of the air extractor (105) is connected to the collector housing (1). An air inlet is opened on the upper baffle (101). The collector housing (1) is fixed with an installation frame (3) inside, and the dust filter liner (106) is fixed inside the installation frame (3). A vertical shaft (301) is rotatably mounted on the installation frame (3) via a bracket. The upper baffle (101) and the lower baffle (102) are respectively fixed to the top and bottom of the vertical shaft (301). The top and bottom of the mounting frame are equipped with locking mechanisms. The locking mechanisms are used to fix the dust filter liner (106). The locking mechanism includes a locking cam (4). A third gear (401) is fixed at the top of the locking cam (4). A synchronous gear ring (403) is rotatably mounted on the mounting frame (3) via a ring-shaped guide rail. There are multiple locking cams (4), and the multiple locking cams (4) are evenly distributed in a ring. The multiple third gears (401) mesh with the synchronous gear ring (403). A fourth gear (402) is fixed to the top of one of the third gears (401), and a fifth gear (404) is fixed on the vertical shaft (301). The fourth gear (402) meshes with the fifth gear (404). A first rotary motor (302) is provided on one side of the vertical shaft (301). A first gear (303) is fixed on the output shaft of the first rotary motor (302). A second gear (304) is fixed on the outside of the vertical shaft (301). The first gear (303) meshes with the second gear (304). The inner liner cleaning mechanism includes a cylinder (2), and a lifting bracket (201) is fixed to the output end of the cylinder (2). A second rotary motor (202) is installed on the lifting bracket (201), and a cleaning brush (203) is fixed to the output end of the second rotary motor (202). The bristles of the cleaning brush (203) contact the inner wall of the dust filter inner liner (106).

2. The dust recovery and utilization system in an alumina production process according to claim 1, characterized in that: An air inlet hose (103) is connected to the air inlet, and a dust collection hood (104) is fixed to the end of the air inlet hose (103) away from the collector housing (1).

3. The dust recovery and utilization system in an alumina production process according to claim 2, characterized in that: The air intake hose (103) is connected to the interior of the dust filter liner (106), which has a cylindrical structure. The air intake of the air pump (105) is directly connected to the exterior of the dust filter liner (106).

4. The dust recovery and utilization system in an alumina production process according to claim 1, characterized in that: The top and bottom ends of the mounting frame (3) are fixed with multiple limiting clamps (305), and the limiting clamps (305) are arc-shaped.

5. A dust recovery and utilization system in an alumina production process according to claim 4, characterized in that: Multiple limiting clamps (305) are evenly distributed in a ring on the inner wall of the mounting frame (3), and there is a gap between the limiting clamps (305) and the inner wall of the mounting frame (3), with the top and bottom of the dust filter liner (106) extending into the gap.

6. A method for using a dust recovery and utilization system in an alumina production process, applicable to a dust recovery and utilization system in an alumina production process as described in any one of claims 1-5, characterized in that, Includes the following steps: S1: Dust removal state, with the upper baffle (101) and lower baffle (102) located directly above and below the collector housing (1). At this time, move the dust collection hood (104) to the processing station and fix it, and turn on the air extractor (105). This will generate negative pressure inside the collector housing (1) and draw the dust particles generated during the production process into the collector housing (1) from the air inlet hose (103). S2: The pulverized particles directly enter the dust filter liner (106). The dust filter liner (106) is equipped with a filter mesh that can block dust, so that the dust remains in the dust filter liner (106) and accumulates, eventually falling onto the lower baffle (102) at the bottom of the collector shell (1). S3: Discharge clean state, start the first rotary motor (302) to drive the first gear (303) to rotate, and then drive the vertical shaft (301) to rotate through the meshing of the first gear (303) and the second gear (304), so that the upper baffle (101) and the lower baffle (102) can be rotated synchronously, opening both ends of the collector shell (1), and the collected dust will be automatically discharged from the lower end; S4: Since dust still remains on the inner wall of the dust filter liner (106), the control cylinder (2) is shortened to insert the cleaning brush (203) into the interior of the dust filter liner (106). Then, the second rotary motor (202) drives the cleaning brush (203) to rotate continuously along the inner wall of the dust filter liner (106), thereby removing the dust remaining on the dust filter liner (106) and causing it to fall from the bottom.

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