A device for producing aluminum hydroxide

Abstract

The utility model relates to aluminium hydroxide production technical field, propose a kind of for producing aluminium hydroxide grading device, including base, the top of base is fixedly connected with stand, the front side of stand is fixedly connected with rotary motor, the rear side of rotary motor output is passed through stand and is fixedly connected with shell, the left side of shell is fixedly connected with vibration unloading mechanism.The utility model is provided with backflush mechanism, when particle blockage appears on screen surface, cylinder drives piston reciprocating motion in sealing shell, outside air is compressed through tee pipe and is guided into screen bottom aperture in one-way valve one-way, intermittent high-pressure airflow impact is formed, force fine particle that is stuck in screen hole to separate from screen, simultaneously, plug is lifted under the action of air pressure in exhaust mechanism, after carrying dust airflow is intercepted by filter screen, it is discharged from exhaust pipe, both realize the active removal of screen hole blockage, and avoid material overflow caused by pressure imbalance in grading box.

Description

Technical Field

[0001] This utility model relates to the field of aluminum hydroxide production technology, and in particular to a grading device for producing aluminum hydroxide. Background Technology

[0002] Aluminum hydroxide production is the process of extracting alumina from bauxite using chemical methods and further processing it into aluminum hydroxide. It mainly adopts the Bayer process or sintering process. The production process includes key steps such as bauxite pretreatment, leaching, decomposition, washing and roasting. By strictly controlling the reaction conditions, aluminum hydroxide products with high purity and uniform particle size can be obtained. In the process of aluminum hydroxide production, a classification device is required to classify it to meet the needs of different fields.

[0003] A utility model patent with publication number CN221360958U discloses a grading and stirring device for aluminum hydroxide, including a stirring frame and a turntable. The turntable has a stirring drum, the stirring frame has an electric telescopic frame and a rotary motor, the electric telescopic frame has a stirring motor, and the output end of the stirring motor has a curved stirring rod. The stirring drum contains multiple sieve plates, and the output end of the rotary motor has gears. This utility model uses multiple sieve plates to grade aluminum hydroxide raw materials. Starting the stirring motor drives the stirring rod to rotate, which not only sieves aluminum hydroxide but also stirs different grades of aluminum hydroxide raw materials. Starting the rotary motor drives the stirring drum to rotate, which effectively improves the sieving and stirring efficiency of aluminum hydroxide raw materials. By integrating sieving and stirring into one unit, the operation process is simplified, processing time is shortened, and labor and machinery costs required for aluminum hydroxide production are reduced, thereby greatly increasing the production profit of aluminum hydroxide.

[0004] Although the above technical solution simplifies the operation process and shortens the processing time by integrating screening and stirring functions, thus increasing the production efficiency of aluminum hydroxide, the patent is prone to screen plate clogging during use. During the screening process, some particulate raw materials are easily blocked inside the screen holes, making it impossible to properly classify aluminum hydroxide. It requires staff to clean it regularly, which reduces production efficiency and is not conducive to use. Utility Model Content

[0005] In view of this, the present invention proposes a grading device for producing aluminum hydroxide, which can automatically clean the screen holes of the screen plate, avoid raw material particles clogging the screen plate, improve the screening efficiency of the screen plate, and eliminate the need for staff to clean it regularly.

[0006] The technical solution of this utility model is implemented as follows: This utility model provides a grading device for producing aluminum hydroxide, including a base, a column fixedly connected to the top of the base, a rotary motor fixedly connected to the front side of the column, a housing fixedly connected to the rear side of the output end of the rotary motor through the column, a vibrating feeding mechanism fixedly connected to the left side of the housing, a grading box fixedly connected to the right side of the vibrating feeding mechanism through the housing, a screen fixedly connected between the two sides of the inner cavity of the grading box, an electric cylinder fixedly connected to the top of the screen, a blocking block fixedly connected to the right side of the output end of the electric cylinder, a discharge pipe connected to the right side of the grading box, a back-blowing mechanism fixedly connected to the bottom of the grading box, and an exhaust mechanism connected to the left side of the top of the grading box.

[0007] More preferably, the vibrating feeding mechanism includes a vibrating shell, the right side of which is fixedly connected to a housing, a drive motor fixedly connected to the rear side of the vibrating shell, a cam fixedly connected to the front side of the output end of the drive motor through the vibrating shell, an adjustment plate provided on the top of the cam, a spring fixedly connected to the top of the adjustment plate, and the right side of the adjustment plate through the housing and fixedly connected to the grading box.

[0008] More preferably, the backflushing mechanism includes a sealing shell, the top of which is fixedly connected to the grading box, a cylinder is fixedly connected to the right side of the sealing shell, a piston is fixedly connected to the left side of the cylinder output end through the sealing shell, and the left side of the sealing shell is connected to the grading box through a three-way pipe, with one-way valves installed at the top and bottom of the three-way pipe surface.

[0009] More preferably, the exhaust mechanism includes an exhaust pipe, the bottom of which is connected to the grading box, a fixing ring is fixedly connected between the two sides of the inner cavity of the exhaust pipe, a tension spring is fixedly connected to the top of the fixing ring, a filter screen is fixedly connected to the top of the tension spring, and a plug is fixedly connected to the top of the filter screen.

[0010] More preferably, the front and rear sides of the inner cavity of the vibration shell are fixedly connected with limit strips, and the front and rear sides of the adjustment plate are provided with limit grooves that cooperate with the limit strips.

[0011] More preferably, a feeding pipe is connected to the right side of the top of the grading box, and a sealing cap is threaded to the top of the feeding pipe.

[0012] More preferably, the right side of the housing has a movable opening for use with the discharge pipe, and both sides of the bottom of the base have mounting holes.

[0013] The present invention provides a grading device for producing aluminum hydroxide, which has the following advantages over the prior art:

[0014] (1) By setting up a back-blowing mechanism, when particles clog the screen surface, the cylinder drives the piston to reciprocate in the sealed shell. External air is compressed through the three-way pipe and then introduced into the bottom hole of the screen through the one-way valve, forming an intermittent high-pressure airflow impact, which forces the fine particles stuck in the screen holes to detach from the screen. At the same time, the plug in the exhaust mechanism is lifted by the air pressure, so that the airflow carrying dust is intercepted by the filter screen and discharged from the exhaust pipe. This not only achieves the active removal of screen hole blockage, but also avoids the material overflow caused by the air pressure imbalance inside the classifier. It forms a screen self-cleaning function that does not rely on manual intervention, reducing the number of downtime maintenance caused by blockage.

[0015] (2) By setting up a vibrating feeding mechanism, the drive motor drives the cam to periodically lift the adjustment plate, so that the classifying box vibrates continuously at high frequency under the action of spring reset, causing the aluminum hydroxide particles accumulated on the screen surface to roll and recombine continuously. Fine particles accelerate through the screen holes under the action of vibration inertial force, while coarse particles slide along the inclined surface of the screen to the discharge pipe. The electric cylinder controls the block to open the discharge pipe, so that the classified material is discharged in layers according to particle size. This vibration mode keeps the material layer in a loose state, improving the classification effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is the front view of the present invention;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is an exploded view of the exhaust mechanism of this utility model;

[0020] Figure 4 This is a cross-sectional view of the sealing shell of this utility model.

[0021] The components are as follows: 1. Base; 2. Column; 3. Rotary motor; 4. Vibrating feeding mechanism; 5. Grading box; 6. Screen; 7. Electric cylinder; 8. Block; 9. Discharge pipe; 10. Backflushing mechanism; 11. Exhaust mechanism; 12. Housing; 41. Vibrating shell; 42. Drive motor; 43. Cam; 44. Adjusting plate; 45. Spring; 101. Sealing shell; 102. Cylinder; 103. Piston; 104. T-pipe; 105. One-way valve; 111. Exhaust pipe; 112. Fixing ring; 113. Tension spring; 114. Filter screen; 115. Plug. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] like Figure 1-4 As shown, this utility model discloses a grading device for producing aluminum hydroxide, comprising a base 1, a column 2 fixedly connected to the top of the base 1, a rotary motor 3 fixedly connected to the front side of the column 2, a housing 12 fixedly connected to the rear side of the output end of the rotary motor 3 through the column 2, a vibrating feeding mechanism 4 fixedly connected to the left side of the housing 12, a grading box 5 fixedly connected to the right side of the vibrating feeding mechanism 4 through the housing 12, a screen 6 fixedly connected between the two sides of the inner cavity of the grading box 5, an electric cylinder 7 fixedly connected to the top of the screen 6, a block 8 fixedly connected to the right side of the output end of the electric cylinder 7, a discharge pipe 9 connected to the right side of the grading box 5, a back-blowing mechanism 10 fixedly connected to the bottom of the grading box 5, and an exhaust mechanism 11 connected to the left side of the top of the grading box 5.

[0024] The column 2 can be installed with the base 1 to install the housing 12. The rotary motor 3 is used to control the rotation of the housing 12. The housing 12 facilitates the installation of the grading box 5. The vibrating feeding mechanism 4 is used to control the grading box 5 to continuously vibrate up and down, increasing the grading effect of screening on raw materials. The screen 6 is used to grade aluminum hydroxide. The screened raw materials are discharged through the discharge pipe 9. The electric cylinder 7 can control the position of the block 8. The block 8 is used to seal the discharge pipe 9 to prevent raw materials from being discharged from the grading box 5 in the initial screening stage. The back-blowing mechanism 10 can inject air from the bottom of the grading box 5 to blow out the raw materials blocked in the mesh of the screen 6. The exhaust mechanism 11 can exhaust the air inside the grading box 5 and prevent the raw materials from being carried out of the grading box 5.

[0025] like Figure 1 and Figure 2 As shown, the vibrating feeding mechanism 4 includes a vibrating shell 41. The right side of the vibrating shell 41 is fixedly connected to the housing 12. A drive motor 42 is fixedly connected to the rear side of the vibrating shell 41. The front side of the output end of the drive motor 42 passes through the vibrating shell 41 and is fixedly connected to a cam 43. An adjustment plate 44 is provided on the top of the cam 43. A spring 45 is fixedly connected to the top of the adjustment plate 44. The right side of the adjustment plate 44 passes through the housing 12 and is fixedly connected to the grading box 5. Limiting strips are fixedly connected to the front and rear sides of the inner cavity of the vibrating shell 41. Limiting grooves that cooperate with the limiting strips are provided on the front and rear sides of the adjustment plate 44.

[0026] The vibration shell 41 facilitates the installation and fixation of the drive motor 42. The cam 43 can work with the drive motor 42 to control the adjustment plate 44 to move up and down repeatedly, so that the grading box 5 and the screen 6 move together. The limit strip and the limit groove can limit the adjustment plate 44 to prevent it from deviating during the movement.

[0027] like Figure 3 and Figure 4 As shown, the backflushing mechanism 10 includes a sealing shell 101. The top of the sealing shell 101 is fixedly connected to the grading box 5. A cylinder 102 is fixedly connected to the right side of the sealing shell 101. A piston 103 is fixedly connected to the left side of the output end of the cylinder 102 through the sealing shell 101. The left side of the sealing shell 101 is connected to the grading box 5 through a three-way pipe 104. One-way valves 105 are installed on the top and bottom of the surface of the three-way pipe 104. The exhaust mechanism 11 includes an exhaust pipe 111. The bottom of the exhaust pipe 111 is connected to the grading box 5. A fixing ring 112 is fixedly connected between the two sides of the inner cavity of the exhaust pipe 111. A tension spring 113 is fixedly connected to the top of the fixing ring 112. A filter screen 114 is fixedly connected to the top of the tension spring 113. A plug 115 is fixedly connected to the top of the filter screen 114.

[0028] The position of piston 103 can be controlled by cylinder 102. Piston 103 is used to push out the air inside the sealing shell 101 and let it enter the classifier 5 through the three-way pipe 104. One-way valve 105 can cooperate with three-way pipe 104 to deliver external air to the sealing shell 101 and then discharge the air inside the sealing shell 101 to the classifier 5. Tension spring 113 can cooperate with fixed ring 112 to limit the filter screen 114 and plug 115. When the classifier 5 is venting, the plug 115 can be moved out of the exhaust pipe 111. The filter screen 114 is used to filter the raw material, and the air is discharged from the classifier 5. The high-speed airflow pushes out the raw material particles in the mesh of screen 6.

[0029] like Figure 1 and Figure 2 As shown, a feeding pipe is connected to the right side of the top of the grading box 5, and a sealing cap is threaded to the top of the feeding pipe. An movable opening for use with the discharge pipe 9 is opened on the right side of the housing 12, and mounting holes are opened on both sides of the bottom of the base 1.

[0030] By setting up a feeding pipe, aluminum hydroxide can be easily transported into the classifier 5 for classification. The sealing cover can seal the feeding pipe, the movable opening can facilitate the up-and-down reciprocating movement of the discharge pipe 9, and the mounting hole can install and fix the base 1, thereby improving the stability of the entire device.

[0031] The working principle of this utility model for a classifying device in the production of aluminum hydroxide is as follows: Aluminum hydroxide to be classified is fed into the classifying chamber 5 through a feeding pipe and sealed with a sealing cover. Then, a drive motor 42 drives a cam 43 to rotate. The cam 43 periodically lifts an adjusting plate 44, causing the classifying chamber 5 to move upwards. Subsequently, under the reset action of a spring 45, the classifying chamber 5 rapidly falls, creating continuous high-frequency vibration. This causes the aluminum hydroxide particles on the surface of the screen 6 to continuously tumble. Fine particles pass through the pores of the screen 6 under the vibration and enter the lower layer, while coarse particles remain at the top of the screen 6. Multiple screens 6 perform the classification operation on the aluminum hydroxide. When discharge is required, an electric cylinder 7 drives a blocking block 8 to move upwards, opening the discharge pipe 9 to discharge the classified raw material. Simultaneously, the rotation is activated. Motor 3, a rotary motor 3, controls the tilting of housing 12 and grading box 5 to facilitate raw material discharge. If the screen holes of screen 6 become clogged during the grading process, the cylinder 102 in the back-blowing mechanism 10 drives piston 103 to reciprocate within the sealed housing 101. External air is compressed through the three-way pipe 104 and then introduced into the bottom of screen 6 through the one-way valve 105. The high-pressure airflow impacts upward from the bottom of the screen holes, blowing the clogged particles away from the screen holes. At this time, the air pressure inside the grading box 5 increases, pushing the plug 115 in the exhaust mechanism 11 to move upward against the tension of the tension spring 113. The airflow carrying dust is filtered through the filter screen 114 and discharged from the exhaust pipe 111. When the air pressure decreases, the tension spring 113 pulls the plug 115 to reset and close the exhaust pipe 111, completing the self-cleaning cycle and reducing the number of downtime maintenance caused by blockage.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A classifying device for producing aluminum hydroxide, characterized in that: The system includes a base (1), a column (2) fixedly connected to the top of the base (1), a rotary motor (3) fixedly connected to the front side of the column (2), a housing (12) fixedly connected to the rear side of the output end of the rotary motor (3) through the column (2), a vibrating feeding mechanism (4) fixedly connected to the left side of the housing (12), a grading box (5) fixedly connected to the right side of the vibrating feeding mechanism (4) through the housing (12), a screen (6) fixedly connected between the two sides of the inner cavity of the grading box (5), an electric cylinder (7) fixedly connected to the top of the screen (6), a block (8) fixedly connected to the right side of the output end of the electric cylinder (7), a discharge pipe (9) connected to the right side of the grading box (5), a back-blowing mechanism (10) fixedly connected to the bottom of the grading box (5), and an exhaust mechanism (11) connected to the left side of the top of the grading box (5).

2. The classifier for producing aluminum hydroxide as described in claim 1, characterized in that: The vibrating feeding mechanism (4) includes a vibrating shell (41), the right side of which is fixedly connected to the housing (12), a drive motor (42) is fixedly connected to the rear side of the vibrating shell (41), a cam (43) is fixedly connected to the front side of the output end of the drive motor (42) through the vibrating shell (41), an adjustment plate (44) is provided on the top of the cam (43), a spring (45) is fixedly connected to the top of the adjustment plate (44), and the right side of the adjustment plate (44) passes through the housing (12) and is fixedly connected to the grading box (5).

3. The classifier for producing aluminum hydroxide as described in claim 1, characterized in that: The backflush mechanism (10) includes a sealing shell (101), the top of which is fixedly connected to the grading box (5), and a cylinder (102) is fixedly connected to the right side of the sealing shell (101). A piston (103) is fixedly connected to the left side of the output end of the cylinder (102) through the sealing shell (101). The left side of the sealing shell (101) is connected to the grading box (5) through a three-way pipe (104). One-way valves (105) are installed on the top and bottom of the surface of the three-way pipe (104).

4. A classifying apparatus for producing aluminum hydroxide as described in claim 1, characterized in that: The exhaust mechanism (11) includes an exhaust pipe (111), the bottom of which is connected to the grading box (5). A fixing ring (112) is fixedly connected between the two sides of the inner cavity of the exhaust pipe (111). A tension spring (113) is fixedly connected to the top of the fixing ring (112). A filter screen (114) is fixedly connected to the top of the tension spring (113). A plug (115) is fixedly connected to the top of the filter screen (114).

5. A classifying apparatus for producing aluminum hydroxide as described in claim 2, characterized in that: Limiting strips are fixedly connected to the front and rear sides of the inner cavity of the vibration shell (41), and limiting grooves that cooperate with the limiting strips are provided on the front and rear sides of the adjustment plate (44).

6. A classifying apparatus for producing aluminum hydroxide as described in claim 1, characterized in that: The top right side of the grading box (5) is connected to a feeding pipe, and the top of the feeding pipe is threaded with a sealing cap.

7. A classifying apparatus for producing aluminum hydroxide as described in claim 1, characterized in that: The right side of the housing (12) is provided with an movable opening for use with the discharge pipe (9), and the bottom of the base (1) is provided with mounting holes on both sides.

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