Screen mechanism for producing activated aluminum oxide by recycling aluminum ash

Abstract

The utility model provides a screen mechanism for producing activated aluminum oxide through aluminum ash recovery, and relates to the technical field of aluminum ash recovery. A plurality of grates are arranged on the bracket, a plurality of division bars are arranged between every two adjacent grates, slotted holes are formed in the side walls of the grates and used for containing the ends of the division bars, an upper bag body and a lower bag body are arranged in the slotted holes in the peripheries of the ends of the division bars, and an upper pipeline and a lower pipeline are arranged in the grates and communicated with the upper bag body and the lower bag body respectively. The upper pipeline and the lower pipeline are respectively communicated with different pressure control systems, the pressure control systems control the liquid medium to enter and exit from the upper pipeline and the lower pipeline and control the pressure of the liquid medium in the upper pipeline and the lower pipeline, and each pressure control system comprises a heater which is used for heating the liquid medium and is controlled by an automatic temperature control system. According to the utility model, self-heating can be carried out to dry blocked or attached materials, and the materials are shaken off to realize self-cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum ash recovery, in particular to a screen mechanism for recovering aluminum ash and producing activated alumina. Background Art

[0002] Activated alumina, also known as activated bauxite, is usually called "activated alumina" when used in catalysts. It is a porous, highly dispersed solid material with a large surface area. Its microporous surface has the characteristics required for catalysis, such as adsorption performance, surface activity, and excellent thermal stability. Therefore, it is widely used as a catalyst and catalyst carrier for chemical reactions.

[0003] Metallic aluminum is extremely easy to oxidize. During the electrolytic aluminum production process, the molten aluminum reacts with the oxygen in the furnace to produce a large amount of aluminum ash. The main substances contained in the aluminum ash are aluminum oxide, metallic aluminum, carbides, nitrides, salts and other metal oxides. The recovery of aluminum ash can achieve resource recycling, environmental protection and economic benefit improvement. The metallic aluminum in the aluminum ash can be recovered to produce activated alumina.

[0004] In the existing technology, aluminum ash needs to be crushed and dispersed after recycling. The screen of the current crusher is easily clogged due to reasons such as wet material or a large number of fine particles. The screen needs to be dried and cleaned regularly to ensure the normal operation of the crusher. Utility Model Content

[0005] The purpose of the utility model is to develop a screen mechanism for recovering aluminum ash and producing activated alumina, which can heat itself to dry blocked or attached materials and shake off the materials to achieve self-cleaning.

[0006] The utility model is achieved through the following technical solutions:

[0007] A screen mechanism for recovering aluminum ash and producing activated alumina, comprising:

[0008] bracket;

[0009] A plurality of grates are arranged on a bracket;

[0010] A plurality of spacers are provided between two adjacent grating bars;

[0011] Slots are provided on the side walls of the grate bars to accommodate the ends of the spacer bars;

[0012] The upper bladder and the lower bladder are arranged in the slots on the periphery of the end of the spacer bar;

[0013] The upper pipe and the lower pipe are arranged in the grate and are connected with the upper bladder and the lower bladder respectively;

[0014] Among them, the upper pipeline and the lower pipeline are respectively connected to different pressure control systems, and the pressure control systems control the liquid medium entering and exiting the upper pipeline and the lower pipeline as well as the pressure of the liquid medium in the upper pipeline and the lower pipeline. The pressure control system includes a heater controlled by an automatic temperature control system for heating the liquid medium.

[0015] Optionally, a plurality of the grates are arranged parallel to each other at equal intervals on the bracket, the partition bars are arranged perpendicular to the grates, and the plurality of partition bars on the grates are arranged at equal intervals.

[0016] Optionally, the spacer is cylindrical, and the slot is cylindrical with an inner diameter larger than an outer diameter of the spacer.

[0017] Optionally, the upper sac and the lower sac are both cylindrical with a depth matching the depth of the slot and a semicircular cross-section. The inner diameter of the upper sac and the lower sac are matched with the outer diameter of the spacer and the outer diameter is matched with the inner diameter of the slot.

[0018] Optionally, the elastic modulus of the inner side surfaces of the upper bladder and the lower bladder is smaller than that of other parts.

[0019] Optionally, the distance between the inner end faces of the slots on both sides of the partition bar is greater than the length of the partition bar.

[0020] Optionally, a pull rope is connected to the center of the two ends of the partition bar, and the other end of the pull rope is connected to the center of the inner end surface of the slot hole, and the sum of the lengths of the two pull ropes and the partition bar is greater than the distance between the inner end surfaces of the two slot holes.

[0021] Optionally, a heating wire is arranged in the partition bar, and the electric wire passes through the interior of the grate bar and the interior of the pull rope and enters the partition bar to be electrically connected to the heating wire.

[0022] Optionally, the pressure control system includes a liquid medium container, which is connected to the two ends of the corresponding upper pipeline or lower pipeline through a liquid inlet pipe and a liquid return pipe respectively. The liquid inlet pipe is provided with a pressure pump and a first solenoid valve in sequence according to the flow direction of the liquid medium, and the return pipe is provided with a second solenoid valve and a reflux pump in sequence according to the flow direction of the liquid medium. The return pipe is also provided with a filter, and the heater is arranged in the liquid medium container.

[0023] The beneficial effects of the utility model are:

[0024] The utility model is fixed by the upper and lower bladders filled with liquid medium. When the screen is screening materials, the partition bars can move slightly elastically inside the upper and lower bladders to cushion the impact of the materials and provide them with a certain degree of protection.

[0025] The screen can be automatically cleaned after working for a period of time. The electric heating wire heats the partition bars, and the heated liquid medium circulates through the upper and lower pipelines to heat the grate bars. The screen is heated to dry the attached material. The pressure control system of the upper and lower pipelines controls the liquid medium in the upper and lower capsules to achieve the jumping of the partition bars, shake off the attached material, and realize self-cleaning. There is no need to disassemble the equipment to take out the screen for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 This is the structural diagram of the utility model;

[0028] Figure 2 This is the internal structure diagram of the slot;

[0029] Figure 3 Schematic diagram of the pressure control system.

[0030] Figure numerals: 1, spacer; 2, slot; 3, pull rope; 4, upper pipeline; 5, upper bladder; 6, lower bladder; 7, lower pipeline; 8, liquid medium container; 9, liquid inlet pipe; 10, pressure pump; 11, first solenoid valve; 12, second solenoid valve; 13, reflux pump; 14, return liquid pipe; 15, grate. DETAILED DESCRIPTION

[0031] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] like Figures 1-3 As shown, the utility model discloses a screen mechanism for recovering aluminum ash and producing activated alumina, including a bracket, which is connected to the equipment or device where the screen is located, and a plurality of grid bars 15 parallel to each other and arranged at equal intervals are provided on the bracket. The bracket is a frame structure (not shown in the figure), and the ends of the grid bars 15 are connected to the bracket. A plurality of cylindrical spacers 1 are provided between adjacent grid bars 15, and the spacers 1 are arranged perpendicular to the grid bars 15. The plurality of spacers 1 are arranged at equal intervals on the grid bars 15.

[0034] A cylindrical slot 2 for accommodating the spacer 1 is provided on the side wall of the grate bar 15. The inner diameter of the slot 2 is larger than the outer diameter of the spacer 1. The distance between the inner end faces of the slot 2 on both sides of the spacer 1 is larger than the length of the spacer 1, that is, the two ends of the spacer 1 can slide axially in the slot 2.

[0035] A pull cord 3 is connected at the center of each end of the spacer bar 1. The other end of the pull cord 3 is connected to the center of the inner end face of the slot 2. The sum of the lengths of the two pull cords 3 and the spacer bar 1 is greater than the distance between the inner end faces of the two slots 2. In other words, the pull cord 3 does not hinder the axial sliding of the spacer bar 1 in the slot 2. The main purpose of the pull cord 3 is to prevent the spacer bar 1 from falling out of the slot 2. A heating wire is arranged inside the spacer bar 1. The wire passes through the interior of the grate 15 and the interior of the pull cord 3 and then enters the spacer bar 1 to electrically connect with the heating wire.

[0036] An upper bladder 5 and a lower bladder 6 are provided in the slot 2. The upper bladder 5 and the lower bladder 6 have the same shape and a certain elasticity. They are both cylindrical with a depth that matches the depth of the slot 2 and a semicircular cross-section. Their inner diameters match the outer diameter of the partition bar 1, and their outer diameters match the inner diameter of the slot 2. The inner surfaces of the upper bladder 5 and the lower bladder 6, that is, the sides that are in contact with the partition bar 1, have a smaller elastic modulus than other parts. When the internal pressure of the upper bladder 5 and the lower bladder 6 reaches a certain level, the expansion degree of the inner surface is greater than that of other parts. The upper bladder 5 and the lower bladder 6 are connected to the inner end surface of the slot 2 and are symmetrically arranged in the slot 2 from top to bottom. An upper pipe 4 and a lower pipe 7 are provided in the grate 15. The upper pipe 4 is connected to the upper bladders 5 in all the slots 2 on the grate 15, and the lower pipe 7 is connected to the lower bladders 6 in all the slots 2 on the grate 15.

[0037] The upper and lower pipelines 4 and 7 are connected to different pressure control systems, each of which includes a liquid medium container 8. This container is connected to both ends of the upper and lower pipelines 4 and 7 via a liquid inlet pipe 9 and a liquid return pipe 14, respectively. The liquid medium enters the upper and lower pipelines 4 and 7 via the liquid inlet pipe 9 and flows back into the liquid medium container 8 via the liquid return pipe 14. The liquid inlet pipe 9 is equipped with a pressure pump 10 and a first solenoid valve 11, sequentially aligned with the flow direction of the liquid medium. The liquid return pipe 14 is equipped with a second solenoid valve 12 and a reflux pump 13, sequentially aligned with the flow direction of the liquid medium. A filter is also provided on the liquid return pipe 14. A heater, controlled by an automatic temperature control system, is installed in the liquid medium container 8 to heat the liquid medium.

[0038] When the screen is working normally, in the pressure control system, the second solenoid valve 12 is closed, the first solenoid valve 11 is opened, and the pressure pump 10 pumps the liquid medium into the upper pipeline 4 or the lower pipeline 7 and pressurizes it. Then, the first solenoid valve 11 is closed, and the pressure pump 10 stops running. A certain pressure is maintained in the upper pipeline 4, the lower pipeline 7 and the corresponding multiple upper capsules 5 and lower capsules 6. The upper capsules 5 and the lower capsules 6 expand and are in close contact with the partition bar 1, clamping the partition bar 1 firmly.

[0039] When the screen is self-cleaning, the heating wire heats up the spacer 1, the heater in the liquid medium container 8 heats the liquid medium, the first solenoid valve 11 and the second solenoid valve 12 are opened, the pressure pump 10 and the reflux pump 13 are operated to make the liquid medium circulate in the upper pipeline 4 and the lower pipeline 7 to heat the grate 15, and the entire grate 15 screen is heated so that the material blocked or attached to the grate 15 screen is heated and dried.

[0040] The heating wire and the heater stop heating, and the pressure control system controls the inlet, outlet and pressure of the liquid medium in the upper pipeline 4 and the lower pipeline 7, so that the upper capsule 5 expands or contracts and the lower capsule 6 contracts or expands, so that the partition bar 1 continuously jumps in the slot hole 2, thereby shaking off the dried material on the grate bar 15 and realizing automatic cleaning.

[0041] The jumping of the spacer 1 includes resetting and jumping. Resetting places the spacer 1 in the lower part of the slot 2, and jumping causes the spacer 1 to bounce. When the spacer 1 is reset, the first solenoid valve 11 in the pressure control system of the lower pipeline 7 is closed, the second solenoid valve 12 is opened, and the reflux pump 13 evacuates the liquid medium in the lower pipeline 7 and the lower bladder 6. In the pressure control system of the upper pipeline 4, the first solenoid valve 11 is opened, the second solenoid valve 12 is closed, and the pressure pump 10 is operated to pump the liquid medium into the upper pipeline 4 and the upper bladder 5. At this time, the lower bladder 6 is deflated, and the upper bladder 5 is expanded, pushing the end of the spacer 1 into the lower part of the slot 2. When the partition bar 1 jumps, in the pressure control system of the upper pipeline 4, the first solenoid valve 11 is closed, the second solenoid valve 12 is opened, and the reflux pump 13 is running to evacuate the liquid medium in the upper pipeline 4 and the upper capsule 5. In the pressure control system of the lower pipeline 7, the second solenoid valve 12 is closed, the first solenoid valve 11 is opened, and the pressure pump 10 runs at high speed to quickly pump the liquid medium into and fill the lower pipeline 7 and the lower capsule 6. The lower capsule 6 expands rapidly to push the end of the partition bar 1 above the slot 2, thereby realizing the jumping of the partition bar 1.

[0042] The above embodiments are only preferred embodiments of the present invention and are not limitations on the technical solutions of the present invention. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present invention.

Claims

1. A screen mechanism for recovering aluminum ash to produce activated alumina, characterized in that: include: bracket; A plurality of grates are arranged on a bracket; A plurality of spacers are provided between two adjacent grating bars; Slots are provided on the side walls of the grate bars to accommodate the ends of the spacer bars; The upper bladder and the lower bladder are arranged in the slots on the periphery of the end of the spacer bar; The upper pipe and the lower pipe are arranged in the grate and are connected with the upper bladder and the lower bladder respectively; Among them, the upper pipeline and the lower pipeline are respectively connected to different pressure control systems, and the pressure control systems control the liquid medium entering and exiting the upper pipeline and the lower pipeline as well as the pressure of the liquid medium in the upper pipeline and the lower pipeline. The pressure control system includes a heater controlled by an automatic temperature control system for heating the liquid medium.

2. The screen mechanism for recovering aluminum ash and producing activated alumina according to claim 1, characterized in that: The plurality of grates are arranged parallel to each other at equal intervals on the bracket, the partition bars are arranged perpendicular to the grates, and the plurality of partition bars on the grates are arranged at equal intervals.

3. The screen mechanism for recovering aluminum ash and producing activated alumina according to claim 2, characterized in that: The spacer is cylindrical, and the slot is cylindrical with an inner diameter larger than an outer diameter of the spacer.

4. The screen mechanism for recovering aluminum ash and producing activated alumina according to claim 3, characterized in that: The upper sac and the lower sac are both columnar in shape with a depth matching the depth of the slot and a semicircular in cross section. The inner diameter of the upper sac and the lower sac are matched with the outer diameter of the spacer and the outer diameter is matched with the inner diameter of the slot.

5. The screen mechanism for recovering aluminum ash and producing activated alumina according to claim 4, characterized in that: The elastic modulus of the inner side surfaces of the upper bladder and the lower bladder is smaller than that of other parts.

6. The screen mechanism for recovering aluminum ash and producing activated alumina according to claim 4, characterized in that: The distance between the inner end surfaces of the slots on both sides of the partition bar is greater than the length of the partition bar.

7. The screen mechanism for recovering aluminum ash and producing activated alumina according to claim 6, characterized in that: A pull rope is connected to the center of the two ends of the partition bar, and the other end of the pull rope is connected to the center of the inner end surface of the slot hole. The sum of the lengths of the two pull ropes and the partition bar is greater than the distance between the inner end surfaces of the two slot holes.

8. The screen mechanism for recovering aluminum ash and producing activated alumina according to claim 7, characterized in that: A heating wire is arranged in the partition bar, and an electric wire passes through the interior of the grate bar and the interior of the pull rope and enters the partition bar to be electrically connected with the heating wire.

9. The screen mechanism for recovering aluminum ash and producing activated alumina according to any one of claims 1 to 8, characterized in that: The pressure control system includes a liquid medium container, which is connected to the corresponding upper pipeline or lower pipeline at both ends through a liquid inlet pipe and a liquid return pipe respectively. The liquid inlet pipe is provided with a pressure pump and a first solenoid valve in sequence according to the flow direction of the liquid medium. The liquid return pipe is provided with a second solenoid valve and a reflux pump in sequence according to the flow direction of the liquid medium. The liquid return pipe is also provided with a filter. The heater is arranged in the liquid medium container.

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