Manual slag removal device for fluorine-loaded aluminum oxide for flue gas defluorination in electrolytic aluminum plant

Abstract

The utility model provides a fluorine-loaded aluminum oxide manual slag removal device for flue gas defluorination of an electrolytic aluminum plant, which comprises a slag removal tank, an impurity discharge hopper obliquely arranged on one side of the slag removal tank and a filter screen obliquely arranged in the slag removal tank, and the lower end part of the filter screen extends into the impurity discharge hopper. Fluorine-loaded aluminum oxide powder can be quickly filtered, impurities are intercepted on the filter screen and directly roll into the impurity discharge hopper, a downstream defluorination generator cannot be blocked, the labor amount of workers is reduced, meanwhile, continuous production can be achieved, and the filter screen can be regularly drawn out for cleaning.

Description

Technical Field

[0001] The utility model relates to a manual slag removing device for fluorine - carrying alumina in the flue gas defluorination of an electrolytic aluminum plant. Background Technique

[0002] In the waste gas purification system of the electrolytic aluminum industry, fluorine - carrying alumina enters the reactor. Because the fluorine - carrying alumina contains a large amount of waste residue, the reactor is often blocked, which affects the purification and emission of waste gas. Previously, a flexible connection mechanism was manually set on the conveying pipeline, and a filter screen was set at the flexible connection mechanism. Then, impurities in the fluorine - carrying alumina powder are easily blocked at the flexible connection mechanism, resulting in damage to the downstream equipment. And regularly opening the flexible connection mechanism to clean impurities requires a large amount of labor for workers and it is difficult to achieve continuous production. Content of the Utility Model

[0003] The purpose of the utility model is to provide a manual slag removing device for fluorine - carrying alumina in the flue gas defluorination of an electrolytic aluminum plant to solve the problems raised in the above - mentioned background technique.

[0004] To solve the above - mentioned technical problems, the utility model provides the following technical solution: A manual slag removing device for fluorine - carrying alumina in the flue gas defluorination of an electrolytic aluminum plant, including an impurity removal tank and an impurity discharge hopper inclined on one side of the impurity removal tank. A filter screen is inclinedly arranged inside the impurity removal tank, and the lower end of the filter screen extends into the impurity discharge hopper.

[0005] The bottoms of both the impurity removal tank and the impurity discharge hopper are of a conical structure.

[0006] The filter screen is inclined at 45°.

[0007] An inspection port is provided on the tank wall of the impurity removal tank corresponding to the upward - inclined end of the filter screen. The filter screen is inserted into or pulled out of the impurity removal tank through the inspection port.

[0008] An observation hole is provided at the connection between the impurity removal tank and the impurity discharge hopper.

[0009] The top of the impurity removal tank is provided with a feed pipe through a lifting and adjusting mechanism, and the discharge end of the feed pipe is inclined upward.

[0010] The lifting and adjusting mechanism includes a component installation straight cylinder, a fixed ring, a threaded rod and a transmission rod. The component installation straight cylinder is fixedly penetrated through the top of the impurity removal tank. The feed pipe passes through the component installation straight cylinder, and a fixed ring is arranged thereon. The fixed ring is threadedly installed on the threaded rod, and the threaded rod is rotatably installed on the side of the component installation straight cylinder. A driven gear is arranged on the threaded rod, and the driven gear meshes with a driving gear. The driving gear is installed at the end of the transmission rod, and the other end of the transmission rod passes through the component installation straight cylinder through a bearing sleeve and extends to the outside.

[0011] One side of the fixed ring is slidably mounted on the sliding rod, while the sliding rod is fixed on the other side of the component mounting straight cylinder.

[0012] The lifting and adjusting mechanism includes a component mounting straight cylinder, a reinforcing sleeve and a limiting member. The component mounting straight cylinder is fixedly penetrated through the top of the impurity removal tank. The feeding pipe passes through the component mounting straight cylinder, and a reinforcing sleeve is fixed thereon. A plurality of positioning grooves are annularly arranged on the circumferential side of the reinforcing sleeve. The limiting member is placed in the positioning groove. The limiting member includes a threaded shaft, a rotating sleeve and a pin. The pin is installed at the end of the threaded shaft through the rotating sleeve, and the head of the pin is of an arc-shaped structure.

[0013] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0014] In the present utility model, the fluorinated alumina powder can be quickly filtered, and the impurities are intercepted on the filter screen and directly roll into the impurity discharge hopper, without pipeline blockage, reducing the labor intensity of workers. At the same time, continuous production can be achieved, and the filter screen can be periodically taken out for cleaning;

[0015] In the present utility model, the feeding pipe is installed at the top of the impurity removal tank through the lifting and adjusting mechanism. The depth of the feeding pipe extending into the impurity removal tank is adjusted through the lifting and adjusting mechanism, and then the distance between the discharge end of the feeding pipe and the filter screen is adjusted, so as to meet the requirements of different feeding amounts, prevent local concentrated blockage effect from occurring between the discharge end and the filter screen due to excessive feeding amount, and ensure the filtering effect of the fluorinated alumina. Description of the Drawings

[0016] The drawings are used to provide further understanding of the present utility model and constitute a part of the specification. In the drawings:

[0017] Figure 1 is the front view of the present utility model;

[0018] Figure 2 is the side view of the present utility model;

[0019] Figure 3 is the structural schematic diagram of the lifting and adjusting mechanism in the present utility model;

[0020] Figure 4 is Figure 3 the enlarged view of part A in;

[0021] Figure 5 is the another structural schematic diagram of the lifting and adjusting mechanism in the present utility model;

[0022] Figure 6 is Figure 5 the enlarged view of part B in;

[0023] In the figure: 1 impurity removal tank; 2 impurity discharge hopper; 3 filter screen; 4 inspection opening; 5 observation hole; 6 lifting and adjusting mechanism; 61 straight cylinder for component installation; 62 fixing ring; 63 threaded rod; 64 transmission rod; 65 reinforcement sleeve; 66 limiting part; 661 threaded shaft; 662 rotating sleeve; 663 pin; 7 feed pipe; 8 driven gear; 9 driving gear; 10 slide bar. Detailed implementation manner

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0025] Please refer to Figure 1-2 , the present invention provides a technical solution: a manual slag removal device for fluorine-bearing alumina used in flue gas defluorination in an electrolytic aluminum plant, including an impurity removal tank 1 and an impurity discharge hopper 2 inclined on one side of the impurity removal tank 1. A filter screen 3 is inclinedly arranged inside the impurity removal tank 1, and the lower end of the filter screen 3 extends into the impurity discharge hopper 2.

[0026] The bottoms of both the impurity removal tank 1 and the impurity discharge hopper 2 are conical structures.

[0027] The filter screen 3 is inclined at 45°.

[0028] An inspection opening 4 is provided on the tank wall of the impurity removal tank 1 corresponding to the upwardly inclined end of the filter screen 3. The filter screen 3 is inserted into or pulled out of the impurity removal tank 1 through the inspection opening 4, which is convenient for replacing filter screens with different mesh diameters and can regularly clean the filter screen.

[0029] An observation hole 5 is provided at the connection between the impurity removal tank 1 and the impurity discharge hopper 2, through which the internal impurity situation can be observed.

[0030] Specific working process of Embodiment 1: In this application, a slag removal tank 1 with a conical structure at the bottom is provided. A 45° filter screen 3 is arranged inside the slag removal tank 1. The fluorine-bearing alumina containing slag passes through the filter screen 3 to filter out the slag inside. The fluorine-bearing alumina without slag enters the reactor from the bottom discharge port of the impurity removal tank 1. The filtered slag rolls into the impurity discharge hopper 2 and is regularly discharged through the slag discharge port on it. Embodiment 2

[0031] Please refer to Figure 3-4, on the basis of the technical solution of Embodiment 1, a feed pipe 7 is installed at the top of the impurity removal tank 1 through a lifting and adjusting mechanism 6. The discharge end of the feed pipe 7 is inclined upward. The lifting and adjusting mechanism 6 includes a component installation straight cylinder 61, a fixing ring 62, a threaded rod 63 and a transmission rod 64. The component installation straight cylinder 61 is fixedly penetrated through the top of the impurity removal tank 1. The feed pipe 7 passes through the component installation straight cylinder 61, and a fixing ring 62 is arranged thereon. The fixing ring 62 is threadedly installed on the threaded rod 63, and the threaded rod 63 is rotatably installed on the side of the component installation straight cylinder 61. A driven gear 8 is arranged on the threaded rod 63. The driven gear 8 meshes with a driving gear 9. The driving gear 9 is installed at the end of the transmission rod 64, and the other end of the transmission rod 64 passes through the component installation straight cylinder 61 through a bearing sleeve and extends to the outside;

[0032] Specific working process of Embodiment 2: When it is necessary to adjust the depth of the feed pipe 7 extending into the impurity removal tank 1, only need to rotate the transmission rod 64 clockwise or counterclockwise. Through the cooperation of the driving gear 9 and the driven gear 8, the threaded rod 63 rotates. At this time, the feed pipe 7 realizes lifting under the drive of the fixing ring 62.

[0033] One side of the fixing ring 62 is slidably installed on a slide bar 10, and the slide bar 10 is fixed on the other side of the component installation straight cylinder 61. During the lifting process of the feed pipe 7, the fixing ring 62 slides along the slide bar 10, which can ensure the stability of the lifting of the feed pipe 7. Embodiment 3

[0034] Please refer to Figure 5-6 , on the basis of the technical solution of Embodiment 1, the lifting and adjusting mechanism 6 includes a component installation straight cylinder 61, a reinforcing sleeve 65 and two circles of limiting members 66 arranged annularly up and down along the component installation straight cylinder 61. The component installation straight cylinder 61 is fixedly penetrated through the top of the impurity removal tank 1. The feed pipe 7 passes through the component installation straight cylinder 61, and a reinforcing sleeve 65 is fixed thereon. A plurality of positioning grooves 11 adapted to the limiting members 66 one by one are annularly arranged on the periphery of the reinforcing sleeve 65. The limiting members 66 are placed in the positioning grooves 11. The limiting members 66 include a threaded shaft 661, a rotating sleeve 662 and a plug pin 663. The plug pin 663 is installed at the end of the threaded shaft 661 through the rotating sleeve 662. The threaded shaft 661 is threadedly installed on the component installation straight cylinder 61, and the head of the plug pin 663 is an arc-shaped structure;

[0035] Specific working process of Embodiment 3: When it is necessary to adjust the depth of the feed pipe 7 extending into the impurity removal tank 1, only need to rotate the threaded shaft 661 in one circle of the limiting members 66 to pull out the plug pin 663 from the positioning groove 11, and then adjust the depth of the feed pipe 7 to make a plurality of positioning grooves 11 correspond to a plurality of limiting members 66 in the other circle one by one (which can be ensured by setting a standard line on the feed pipe 7), and then rotate the threaded shaft 661 in this circle of limiting members 66 to insert the plug pin 663 into the positioning groove 11, thereby realizing the positioning of the feed pipe 7 and thus realizing the adjustment of the depth of the feed pipe 7.

[0036] It should be noted that relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0037] Finally, it should be noted that the above are only preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A manual slag removal device for fluorine-bearing alumina used in the flue gas defluorination of an electrolytic aluminum plant, characterized in that: It includes a impurity removal tank and an impurity discharge hopper which is inclined and arranged on one side of the impurity removal tank. A filter screen is inclined and arranged inside the impurity removal tank, and the lower end of the filter screen extends into the impurity discharge hopper.

2. The manual slag removal device for fluorine-bearing alumina used in the flue gas defluorination of an electrolytic aluminum plant according to claim 1, characterized in that: The bottoms of the impurity removal tank and the impurity discharge hopper are both conical structures.

3. The manual slag removal device for fluorine-bearing alumina used in the flue gas defluorination of an electrolytic aluminum plant according to claim 1, characterized in that: The filter screen is inclined at 45°.

4. The manual slag removal device for fluorine-bearing alumina used in the flue gas defluorination of an electrolytic aluminum plant according to claim 1, wherein: An inspection port is provided on the tank wall of the impurity removal tank corresponding to the upwardly inclined end of the filter screen. The filter screen is inserted into or pulled out of the impurity removal tank through the inspection port.

5. The manual slag removal device for fluorine-bearing alumina used in the flue gas defluorination of an electrolytic aluminum plant according to claim 1, wherein: An observation hole is provided at the connection between the impurity removal tank and the impurity discharge hopper.

6. The manual slag removal device for fluorine-bearing alumina used in the flue gas defluorination of an electrolytic aluminum plant according to claim 1, wherein: The top of the impurity removal tank is installed with a feed pipe through a lifting adjustment mechanism, and the discharge end of the feed pipe is inclined upward.

7. The manual slag removal device for fluorine-bearing alumina used in the flue gas defluorination of an electrolytic aluminum plant according to claim 6, characterized in that: The lifting adjustment mechanism includes a component installation straight cylinder, a fixed ring, a threaded rod and a transmission rod. The component installation straight cylinder is fixedly penetrated through the top of the impurity removal tank. The feed pipe passes through the component installation straight cylinder, and a fixed ring is arranged thereon. The fixed ring is threadedly installed on the threaded rod, and the threaded rod is rotatably installed on the side of the component installation straight cylinder. A driven gear is arranged on the threaded rod, and the driven gear meshes with a driving gear. The driving gear is installed at the end of the transmission rod, and the other end of the transmission rod passes through the component installation straight cylinder through a bearing sleeve and extends to the outside.

8. The manual slag removal device for fluorine-bearing alumina used in the flue gas defluorination of an electrolytic aluminum plant according to claim 7, characterized in that: One side of the fixed ring is slidably installed on a slide rod, and the slide rod is fixed on the other side of the component installation straight cylinder.

9. The manual slag removal device for fluorine-bearing alumina used in the flue gas defluorination of an electrolytic aluminum plant according to claim 6, characterized in that: The lifting adjustment mechanism includes a component installation straight cylinder, a reinforcement sleeve and a limiting member. The component installation straight cylinder is fixedly penetrated through the top of the impurity removal tank. The feed pipe passes through the component installation straight cylinder, and a reinforcement sleeve is fixed thereon. A plurality of positioning grooves are annularly arranged on the periphery of the reinforcement sleeve. The limiting member is placed in the positioning groove. The limiting member includes a threaded shaft, a rotating sleeve and a plug. The plug is installed at the end of the threaded shaft through the rotating sleeve, and the head of the plug is an arc-shaped structure.

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