Anti-caking powder bin for aluminum oxide production

Abstract

The utility model relates to the technical field of aluminum oxide production equipment, in particular to an anti-caking powder bin for aluminum oxide production. The anti-caking powder bin comprises a cylindrical material barrel, a spiral material supporting plate is arranged in the cylindrical material barrel, a conical discharging section is arranged on the lower end face of the cylindrical material barrel, and an auxiliary dredging device used for loosening powder is installed at the upper end of the outer side face of the conical discharging section. Powder can be effectively prevented from being completely stacked together in the stock bin, and meanwhile, the auxiliary dredger and the rotating conical flow guide tower are arranged on the conical discharging section of the stock bin, so that discharging of the powder can be accelerated; the cylindrical charging barrel is used for storing alpha-aluminum oxide finished products or powdery raw materials, the spiral material supporting plate is used for supporting powder, so that materials in the cylindrical charging barrel are separated, the materials are prevented from being completely stacked together, and the materials adhered to the inner wall of the conical discharging section can be shaken off through pulse type vibration generated by the auxiliary dredger.

Description

Technical Field

[0001] The present application relates to the technical field of alumina production equipment, and specifically to an anti-caking powder silo for alumina production. Background Art

[0002] α-alumina, commonly known as corundum, is the most stable phase of all alumina. Its stability is closely related to the crystal structure, which belongs to the trigonal crystal system, in which oxygen ions are approximately close-packed hexagonal stacking, and aluminum atoms fill the octahedral voids. Since the ratio of aluminum atoms to oxygen atoms is 2:3, aluminum atoms do not completely fill all octahedral voids. This special crystal structure gives α-alumina extremely high stability. When producing α-alumina, the raw materials need to be first ground into powder by a ball mill. After the powder is filtered, the qualified fine material is lifted to a high raw material temporary storage tank by an elevator for storage. The powder stored in the tank is mixed by mixing with industrial salt, washed with water to remove sodium - sodium is washed away with water, screw conveyed - calcined in a kiln, calcined with natural gas - cooled in a cooling kiln, and finally screened to obtain α-alumina. The screened α-alumina needs to be stored in a silo for subsequent bagging and packaging.

[0003] The existing silo for storing α-alumina finished products and powdered raw materials includes a cylindrical barrel, in which the powder is stored. The powder in the cylindrical barrel is squeezed and easily hardened or adhered to the inner wall of the silo, especially at the discharge port at the lower end of the cylindrical barrel. Since the barrel becomes thinner at the discharge port, the material is very easy to accumulate and block the discharge port. In order to clear the blocked discharge port, workers need to hammer the discharge port of the cylindrical barrel to make it vibrate so that the powder can be discharged smoothly from the discharge port. The operation is time-consuming and labor-intensive, and affects the normal discharge of materials. Utility Model Content

[0004] The present application provides an anti-caking powder silo for alumina production. By arranging a spiral support plate to support the powder, the powder can be effectively prevented from piling up in the silo. At the same time, an auxiliary dredge and a rotating conical guide tower are arranged in the conical discharge section of the silo to accelerate the discharge of the powder, thereby effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an anti-caking powder silo for alumina production, comprising a cylindrical barrel; a spiral support plate is provided inside the cylindrical barrel, a conical discharge section is provided on the lower end face of the cylindrical barrel, and an auxiliary dredge for loosening the powder is installed on the upper end of the outer surface of the conical discharge section.

[0006] The conical unloading section is connected to a motor protection box through a support rod arranged at the lower end of its inner side surface, a motor is installed on the inner side surface of the motor protection box, and the outer side surface of the motor protection box is rotatably connected to a conical guide tower, the outer side surface of the conical guide tower is provided with spiral teeth, the output shaft of the motor passes through the motor protection box and is connected to the middle part of the inner side surface of the conical guide tower, the motor protection box is arranged inside the conical guide tower, and the conical guide tower coincides with the central axis of the conical unloading section.

[0007] Preferably, an annular guardrail is provided on the edge of the upper surface of the cylindrical barrel.

[0008] Preferably, the outer side surface of the cylindrical barrel is provided with at least one annular reinforcing rib plate, the outer side surface of the cylindrical barrel is provided with a spiral reinforcing rib plate, and at least one annular reinforcing rib plate is evenly distributed on the outer side surface of the cylindrical barrel from top to bottom.

[0009] Preferably, a discharge pipe is provided on the lower end surface of the conical discharge section, and a discharge pipe valve is installed on the discharge pipe.

[0010] Preferably, a feed port, a pressure balancer and a material level sensor installation port are installed on the upper end surface of the cylindrical barrel.

[0011] Preferably, the pressure balancer includes an air guide cylinder connected to the interior of the cylindrical barrel, the upper end surface of the air guide cylinder is sealed with a circular plastic plate, the circular plastic plate is tightly pressed on the cylindrical barrel through an annular pressure plate, and the annular pressure plate is fixed to the air guide cylinder by bolts.

[0012] Preferably, the spiral supporting plate is welded to the inner wall of the cylindrical barrel.

[0013] Preferably, the number of the auxiliary clearers is not less than one, and the auxiliary clearer includes an air duct, one end of which is equipped with a solenoid valve, the other end of which passes through the mounting hole on the outer side of the conical discharge section and is connected to a conical air butterfly, the conical air butterfly is arranged close to the inner side of the conical discharge section, and an air outlet opening is provided on the outer side of the air duct near the conical air butterfly.

[0014] Preferably, a telescopic rod is installed in the center of the conical air butterfly, the telescopic rod is slidably connected to the air guide tube, a spring is sleeved on the outer side of the telescopic rod, both ends of the spring are respectively fixed on the conical air butterfly and the air guide tube, and the air guide tube is fixed to the conical blanking section by a positioning nut.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] 1. The anti-caking powder silo for alumina production can effectively prevent the powder from piling up in the silo by setting a spiral support plate to hold the powder. At the same time, an auxiliary dredge and a rotating conical guide tower are set in the conical discharge section of the silo to accelerate the discharge of the powder.

[0017] 2. The cylindrical barrel is used to store α-alumina finished products or powdered raw materials, and the spiral support plate is used to lift the powder, thereby separating the materials inside the cylindrical barrel and avoiding the materials from piling up together. The pulse vibration produced by the auxiliary dredge can shake off the materials adhering to the inner wall of the conical discharge section;

[0018] 3. When unloading, the motor drives the conical guide tower to rotate through its output shaft, and the conical guide tower drives the spiral teeth on its outer surface to rotate. The spiral teeth push the material downward, and at the same time, the spiral teeth collide with the material, which can effectively break the agglomerated material into powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of this application;

[0020] Figure 2 This is the main view of this application;

[0021] Figure 3 This is a cross-sectional view of this application;

[0022] Figure 4 It is a structural schematic diagram of the auxiliary dredging device;

[0023] Figure 5 for Figure 3 A partial enlarged schematic diagram in the middle;

[0024] Figure 6 This is a schematic diagram of the structure of the gas cylinder.

[0025] In the figure: 1 cylindrical barrel, 2 discharge pipe valve, 3 discharge pipe, 4 support column, 5 feed port, 6 pressure balancer, 61 air guide cylinder, 62 annular pressure plate, 63 circular plastic plate, 7 material level sensor installation port, 8 annular reinforcing rib plate, 9 conical discharge section, 10 spiral reinforcing rib plate, 11 auxiliary dredge, 111 conical air butterfly, 112 air outlet opening, 113 positioning nut, 114 solenoid valve, 115 air guide pipe, 116 telescopic rod, 12 spiral support plate, 13 conical guide tower, 14 motor, 15 spiral teeth, 16 motor protection box, 17 support rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] In the description of this application, if the orientation description is involved, for example, the orientation or position relationship indicated by "upper", "lower", "front", "back", "left", "right", etc. is based on the attached Figure 2 The orientation or position relationship shown is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present application. When a feature is referred to as being "set", "fixed", or "connected" to another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, or connected to the other feature.

[0028] See also Figure 1-6 The present application provides the following technical solutions: an anti-caking powder silo for alumina production, comprising a cylindrical barrel 1; a spiral support plate 12 is provided inside the cylindrical barrel 1, a conical discharge section 9 is provided on the lower end face of the cylindrical barrel 1, and an auxiliary dredge 11 for loosening the powder is installed on the upper end of the outer surface of the conical discharge section 9.

[0029] Specifically, the cylindrical barrel 1 is used to store α-alumina finished products or powdered raw materials, and the spiral support plate 12 is used to lift the powder, thereby separating the materials inside the cylindrical barrel 1 and preventing all the materials from piling up together. The pulse vibration produced by the auxiliary dredge 11 can shake off the materials adhering to the inner wall of the conical discharge section 9.

[0030] More specifically, a plurality of auxiliary dredges 11 can be installed on the outer side of the cylindrical barrel 1, so as to effectively prevent the material from sticking to the outer surface of the spiral support plate 12. In order to prevent the powder from clogging inside the cylindrical barrel 1, the thread pitch of the spiral support plate 12 is set to P, and the height of the cylindrical barrel 1 is set to H. P ≥ 1 / 3H, so that the slope of the surface of the spiral support plate 12 can be effectively guaranteed.

[0031] The conical unloading section 9 is connected to a motor protection box 16 via a support rod 17 arranged at the lower end of its inner side surface. A motor 14 is installed on the inner side surface of the motor protection box 16. The outer side surface of the motor protection box 16 is rotatably connected to a conical guide tower 13. The outer side surface of the conical guide tower 13 is provided with spiral teeth 15. The output shaft of the motor 14 passes through the motor protection box 16 and is connected to the middle part of the inner side surface of the conical guide tower 13. The motor protection box 16 is arranged inside the conical guide tower 13, and the conical guide tower 13 coincides with the central axis of the conical unloading section 9.

[0032] Specifically, when unloading, the motor 14 drives the conical guide tower 13 to rotate through its output shaft, and the conical guide tower 13 drives the spiral teeth 15 on its outer surface to rotate. The spiral teeth 15 push the material to move downward, and at the same time, the spiral teeth 15 collides with the material, which can effectively break the agglomerated material into powder.

[0033] Furthermore, an annular guardrail is provided on the edge of the upper surface of the cylindrical barrel 1 .

[0034] Specifically, the annular guardrail is used to protect the top of the cylindrical barrel 1 during maintenance.

[0035] Furthermore, the outer side surface of the cylindrical barrel 1 is provided with at least one annular reinforcing rib plate 8, the outer side surface of the cylindrical barrel 1 is provided with a spiral reinforcing rib plate 10, and at least one annular reinforcing rib plate 8 is evenly distributed on the outer side surface of the cylindrical barrel 1 from top to bottom.

[0036] Specifically, the arrangement of the annular reinforcing rib plate 8 in combination with the spiral reinforcing rib plate 10 can effectively increase the compressive strength of the cylindrical barrel 1 .

[0037] Furthermore, a discharge pipe 3 is provided on the lower end surface of the conical discharge section 9, and a discharge pipe valve 2 is installed on the discharge pipe 3.

[0038] Specifically, by opening the discharge pipe valve 2 , the material inside the conical discharge section 9 can be quickly discharged through the discharge pipe 3 .

[0039] Furthermore, the upper end surface of the cylindrical barrel 1 is provided with a feed port 5 , a pressure balancer 6 and a material level sensor installation port 7 .

[0040] Specifically, the feed port 5 is used to add raw materials into the interior of the cylindrical barrel 1, the pressure balancer 6 is used to protect the feed port 5 from being damaged by air pressure, and a level sensor is installed on the level sensor installation port 7. The level sensor is used to detect the material level height in the cylindrical barrel 1, which can effectively avoid the occurrence of tank overflow.

[0041] Furthermore, the pressure balancer 6 includes an air guide cylinder 61 connected to the interior of the cylindrical barrel 1, and the upper end surface of the air guide cylinder 61 is sealed with a circular plastic plate 63, and the circular plastic plate 63 is tightly pressed on the cylindrical barrel 1 through an annular pressure plate 62, and the annular pressure plate 62 is fixed to the air guide cylinder 61 by bolts.

[0042] Specifically, when the air pressure in the cylindrical barrel 1 is unbalanced, the atmospheric pressure first breaks the circular plastic plate 63 , thereby achieving the balance of the air pressure inside and outside the cylindrical barrel 1 , which can effectively protect the cylindrical barrel 1 .

[0043] Furthermore, the spiral supporting plate 12 is welded to the inner wall of the cylindrical barrel 1 .

[0044] Specifically, welding can effectively ensure the connection strength of the spiral supporting plate 12 .

[0045] Furthermore, the number of the auxiliary clearers 11 is not less than one, and the auxiliary clearer 11 includes an air duct 115, one end of which is equipped with a solenoid valve 114, and the other end of the air duct 115 is connected to a conical air butterfly 111 through the mounting hole on the outer side of the conical discharge section 9, the conical air butterfly 111 is arranged close to the inner side of the conical discharge section 9, and an air outlet opening 112 is provided on the outer side of the air duct 115 near the conical air butterfly 111.

[0046] Furthermore, a telescopic rod 116 is installed in the center of the conical air butterfly 111, and the telescopic rod 116 is slidably connected to the air guide tube 115. A spring is sleeved on the outer side of the telescopic rod 116, and both ends of the spring are respectively fixed on the conical air butterfly 111 and the air guide tube 115. The air guide tube 115 is fixed to the conical blanking section 9 through a positioning nut 113.

[0047] Specifically, when unloading, a pulsed high-pressure airflow is sent into the conical air butterfly 111 through the air guide pipe 115 and the air outlet opening 112, and the high-pressure gas pushes the conical air butterfly 111 out, and the spring is synchronously extended. The compacted material is separated from the inner wall of the conical unloading section 9 under the impact of the airflow and the conical air butterfly 111. During the spring rebound process, the conical air butterfly 111 is pulled to hit the conical unloading section 9, causing the conical unloading section 9 to vibrate, thereby further breaking the compacted material.

[0048] When in use: raw materials are added into the interior of the cylindrical barrel 1 through the feed port 5. When the cylindrical barrel 1 is discharging materials, the discharge pipe valve 2 is opened, the motor 14 and the auxiliary dredge 11 are started, so that the materials in the cylindrical barrel 1 are discharged quickly.

[0049] The materials accumulated inside the cylindrical barrel 1 are separated by the spiral support plate 12, which can effectively prevent the materials at the bottom from being subjected to excessive pressure, thereby effectively preventing the powder from being compacted.

[0050] It is worth noting that the input ends of the solenoid valve 114 and the motor 14 mentioned in the embodiment of the present application are electrically connected to the output end of the external power supply through an external control switch.

[0051] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An anti-caking powder silo for alumina production, characterized by: It comprises a cylindrical barrel (1); a spiral support plate (12) is provided inside the cylindrical barrel (1); a conical material discharge section (9) is provided on the lower end surface of the cylindrical barrel (1); an auxiliary dredging device (11) for loosening powder is installed on the upper end of the outer surface of the conical material discharge section (9); The conical material discharge section (9) is connected to a motor protection box (16) via a support rod (17) arranged at the lower end of the inner side surface thereof; a motor (14) is mounted on the inner side surface of the motor protection box (16); an outer side surface of the motor protection box (16) is rotatably connected to a conical flow guide tower (13); a spiral tooth (15) is arranged on the outer side surface of the conical flow guide tower (13); an output shaft of the motor (14) passes through the motor protection box (16) and is connected to the middle part of the inner side surface of the conical flow guide tower (13); the motor protection box (16) is arranged inside the conical flow guide tower (13); and the central axis of the conical flow guide tower (13) coincides with that of the conical material discharge section (9).

2. The anti-caking powder silo for alumina production according to claim 1, characterized in that: An annular guardrail is provided on the edge of the upper surface of the cylindrical barrel (1).

3. The anti-caking powder silo for alumina production according to claim 1, characterized in that: The outer side surface of the cylindrical barrel (1) is provided with at least one annular reinforcing rib plate (8), the outer side surface of the cylindrical barrel (1) is provided with a spiral reinforcing rib plate (10), and at least one annular reinforcing rib plate (8) is evenly distributed on the outer side surface of the cylindrical barrel (1) at equal distances from top to bottom.

4. The anti-caking powder silo for alumina production according to claim 1, characterized in that: A discharge pipe (3) is provided on the lower end surface of the conical discharge section (9), and a discharge pipe valve (2) is installed on the discharge pipe (3).

5. The anti-caking powder silo for alumina production according to claim 1, characterized in that: The upper end surface of the cylindrical barrel (1) is provided with a feed port (5), a pressure balancer (6) and a material level sensor installation port (7).

6. The anti-caking powder silo for alumina production according to claim 5, characterized in that: The pressure balancer (6) comprises an air guide cylinder (61) connected to the interior of the cylindrical barrel (1); the upper end surface of the air guide cylinder (61) is sealedly connected to a circular plastic plate (63); the circular plastic plate (63) is tightly pressed against the cylindrical barrel (1) via an annular pressing plate (62); and the annular pressing plate (62) is fixed to the air guide cylinder (61) via bolts.

7. The anti-caking powder silo for alumina production according to claim 1, characterized in that: The spiral support plate (12) is welded to the inner wall of the cylindrical barrel (1).

8. The anti-caking powder silo for alumina production according to claim 1, characterized in that: The number of the auxiliary dredges (11) is not less than one, and the auxiliary dredge (11) comprises an air guide tube (115), one end of which is provided with a solenoid valve (114), and the other end of the air guide tube (115) passes through a mounting hole on the outer side of the conical material discharge section (9) and is connected to a conical air butterfly (111), the conical air butterfly (111) is arranged close to the inner side of the conical material discharge section (9), and an air outlet opening (112) is arranged on the outer side of the air guide tube (115) near the conical air butterfly (111).

9. The anti-caking powder silo for alumina production according to claim 8, characterized in that: A telescopic rod (116) is installed in the center of the conical air butterfly (111), the telescopic rod (116) is slidably connected to the air guide tube (115), a spring is sleeved on the outer side of the telescopic rod (116), two ends of the spring are respectively fixed to the conical air butterfly (111) and the air guide tube (115), and the air guide tube (115) is fixed to the conical blanking section (9) via a positioning nut (113).

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