Alumina superconcentrate delivery mechanism and delivery system

Abstract

This utility model discloses an alumina ultra-dense phase conveying mechanism and system, including a material chamber, a gas chamber, and a permeable cloth. The material chamber is used to contain alumina material, and the gas chamber is located below the material chamber. The gas chamber includes several independent gas chamber segments, and the permeable cloth is disposed between each gas chamber segment and the material chamber to separate the gas chamber and the material chamber and support the fluidization process of the alumina material. This utility model divides the gas chamber into several segments while keeping the material chamber size unchanged, and each gas chamber segment is equipped with an individual permeable cloth. This allows for partial replacement of the permeable cloth at the damaged point when it wears and leaks, without having to dismantle the entire gas chamber. This significantly shortens maintenance time, reduces material and labor costs for replacing the permeable cloth, and also reduces maintenance workload and related expenses.

Description

Technical Field

[0001] This utility model relates to the technical field of alumina conveying devices, specifically to an alumina ultra-dense phase conveying mechanism and conveying system. Background Technology

[0002] Ultra-dense phase conveying is a technology specifically designed for long-distance conveying of powdery or fine granular materials, and it is widely used, especially in the field of alumina conveying. This technology uses low-pressure air (usually 3000Pa-7000Pa) to bring the powdery material to a semi-boiling state, forming a "gas-solid two-phase" fluid.

[0003] However, existing ultra-dense phase conveying chutes have some problems during operation. A single chute section can be over 10 meters long. Once the permeable cloth wears and leaks, alumina enters the gas chamber, preventing the alumina from being fluidized in that section of the chute, thus causing blockage. Replacing the permeable cloth requires removing the entire fixed fluidizing plate of the gas chamber. Because the gas chamber is long and the gas chamber, permeable cloth, and material chamber are bolted together, maintenance is time-consuming and difficult, impacting production efficiency. Utility Model Content

[0004] To overcome at least one of the aforementioned drawbacks, this invention provides an alumina ultra-dense phase conveying mechanism and system. The objective of this invention can be achieved by employing the following technical solution:

[0005] A first aspect of this application provides an alumina ultra-dense phase transport mechanism, comprising:

[0006] The material chamber is used to hold alumina materials;

[0007] An air chamber is disposed below the material chamber, and the air chamber includes several independent air chamber segments;

[0008] A breathable cloth is disposed between each of the air chamber segments and the material chamber to separate the air chamber and the material chamber and to support the fluidization process of the alumina material.

[0009] In one possible implementation, the number of air chamber segments is at least two, and the air chamber segments are detachably connected to the material chamber.

[0010] In one possible implementation, the material chamber, the breathable fabric, and the air chamber segment are connected by bolts.

[0011] In one possible implementation, a plurality of bottom plates are spaced apart at the bottom of the material chamber, and an opening is formed between adjacent bottom plates. The breathable cloth and the air chamber are disposed on the opening, and the shape and size of the breathable cloth are adapted to the air chamber segments.

[0012] In one possible implementation, the breathable fabric is made of polypropylene and has a temperature resistance of at least 160°C.

[0013] In one possible implementation, the angle between the material chamber and the horizontal plane is not less than 3°.

[0014] A second aspect of this application provides an alumina ultra-dense phase transport system, including the alumina ultra-dense phase transport mechanism of any one of the first aspects.

[0015] In one possible implementation, an air supply device is also included, which includes a centrifugal fan for supplying air to the air chamber segment, causing the alumina material to form a fluid within the chamber and move in a directional manner.

[0016] In one possible implementation, a bidirectional automatic regulating valve is also included, which is located at the air inlet or air outlet of the conveying system for regulating the air volume.

[0017] In one possible implementation, an exhaust gas collector is also included, located at the end of the conveying system, for collecting and treating the emitted gas.

[0018] The beneficial technical effects of this utility model are as follows: According to the present disclosure, the alumina ultra-dense phase conveying mechanism and conveying system can divide the gas chamber into several segments while keeping the material chamber size unchanged. Each gas chamber segment is equipped with an individual ventilated cloth, so that when the ventilated cloth is worn and leaks, only the ventilated cloth at the damaged point needs to be removed for partial replacement, without having to remove the entire gas chamber. This greatly shortens the maintenance time, reduces the material and labor costs of replacing the ventilated cloth, and also reduces the maintenance workload and related expenses. Attached Figure Description

[0019] The following are given by way of example and without limitation in the accompanying drawings:

[0020] Figure 1 A schematic diagram of the conveying mechanism according to an embodiment of the present invention is shown;

[0021] Figure 2 A schematic diagram of a traditional technology conveying mechanism is shown.

[0022] In the diagram: 1. Material chamber; 2. Air chamber segment; 3. Breathable cloth; 4. Air chamber. Detailed Implementation

[0023] In the following detailed disclosure, these embodiments are fully described with reference to the accompanying drawings. In order to enable those skilled in the art to understand and clarify the technical solution of this utility model more clearly, the embodiments described below are not limited thereto. The present utility model will be further described in detail below with reference to the embodiments and the accompanying drawings.

[0024] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figure 2 As shown, in a traditional alumina ultra-dense phase conveying device, the material is separated into an upper material chamber and a lower air chamber by a breathable cloth during the conveying process. Low-pressure air is evenly distributed through the breathable cloth, giving the material a fluid-like flowability.

[0027] The first aspect of this application, as Figure 1 As shown, an alumina ultra-dense phase conveying mechanism is provided, including a material chamber 1, an air chamber 4, and a breathable cloth 3. The material chamber 1 is used to contain alumina material. The air chamber 4 is located below the material chamber 1 and includes several independent air chamber segments 2. The breathable cloth 3 is located between each air chamber segment 2 and the material chamber 1 to separate the air chamber 4 and the material chamber 1 and support the fluidization process of the alumina material.

[0028] The alumina ultra-dense phase conveying mechanism provided in this embodiment can divide the gas chamber 4 into several segments while keeping the size of the material chamber 1 unchanged. Each gas chamber segment 2 is equipped with a separate breathable cloth 3, so that when the breathable cloth 3 is worn and leaks air, only the breathable cloth 3 at the damaged point needs to be removed for partial replacement, without having to remove the entire gas chamber 4. This greatly shortens the maintenance time, reduces the material and labor costs of replacing the breathable cloth 3, and significantly reduces downtime and maintenance costs.

[0029] The material chamber 1 is used to contain alumina material and ensure that the material can flow stably during the conveying process. Each air chamber segment 2 can be disassembled and installed independently for easy local maintenance and management. The breathable cloth 3 is set between each air chamber segment 2 and the material chamber 1. As a key separating component, it not only effectively separates the air chamber 4 and the material chamber 1, but also supports the fluidization process of alumina material and ensures that the material is stably conveyed in the form of "gas-solid two-phase" fluid.

[0030] Understandably, the independent gas chamber segment 2 reduces the risk of the entire system being affected by local failures. Even if a problem occurs in one segment, the other segments can still work normally, ensuring the continuous and stable transport of alumina materials.

[0031] In one possible implementation, such as Figure 1 As shown, there are at least two air chamber segments 2, and the air chamber segments 2 are detachably connected to the material chamber 1.

[0032] The alumina ultra-dense phase conveying mechanism provided in this embodiment adopts a segmented air chamber 4 design. By decomposing the air chamber 4 into at least two independent segments and forming a detachable connection with the material chamber 1, the independent segmented structure has modular maintenance characteristics. When the local permeable cloth 3 wears, only the corresponding air chamber segment 2 needs to be disassembled and replaced, which greatly reduces the workload of maintenance and shortens the downtime. The structure of independent air supply for each air chamber segment 2 can also automatically adjust the air pressure through a pressure balancing device to ensure the uniform and stable fluidization of alumina material and effectively prevent local blockage. The modular design also enhances the system's fault tolerance. The failure of a single air chamber segment 2 will not affect the overall conveying function, significantly improving production continuity. The segmented structure also allows for flexible adjustment of the installation layout according to the site space conditions, optimizing the adaptability of the equipment.

[0033] Understandably, the number of air chamber segments 2 can be two, three, or other integers. Independent air chamber segments 2 allow the system to be flexibly adjusted according to actual needs. When the conveying distance is long or the material properties change, the system performance can be optimized by adding or removing air chamber segments 2, which greatly improves flexibility.

[0034] Furthermore, the material chamber 1, the breathable cloth 3, and the air chamber segment 2 are connected by bolts. The detachable connection design is achieved by bolts, which not only ensures airtightness but also facilitates disassembly and reassembly, making maintenance operations more flexible and efficient.

[0035] In one possible implementation, such as Figure 1 As shown, several bottom plates are spaced apart at the bottom of the material chamber 1, and an opening is formed between adjacent bottom plates. The breathable cloth 3 and the air chamber 4 are placed on the opening, and the shape and size of the breathable cloth 3 are adapted to the air chamber segment 2.

[0036] The spaced-out base plates form regularly spaced openings, which, together with the breathable fabric 3 covering the air chamber segments 2, allow compressed air to penetrate the material layer evenly, eliminating localized fluidization dead zones and ensuring continuous suspension and flow of alumina particles. The opening structure between adjacent base plates forms a multi-channel airflow network, automatically compensating for pressure losses in different sections through zoned air supply in several air chamber segments 2, maintaining overall stable air pressure in the conveying pipeline. The precise fit between the breathable fabric 3 and the air chamber segments 2 prevents edge leakage, while its breathability prevents fine particles from seeping into the air chambers, reducing the failure rate and maintenance frequency.

[0037] Understandably, the breathable fabric 3 is made of polypropylene and has a temperature resistance of at least 160℃. The operating temperature of the electrolytic aluminum ultra-dense phase conveying system is usually controlled within the range of 60-100℃, and polypropylene fabric can meet the basic requirements within this range.

[0038] In one possible implementation, the angle between the material chamber 1 and the horizontal plane is not less than 3°, so as to avoid material stagnation, accumulation, partial blockage or interruption of conveying due to insufficient inclination angle of the material chamber 1, and to ensure that the fluidized material can slide down evenly, reducing dust dispersion caused by airflow disturbance.

[0039] Preferably, the angle between the material chamber 1 and the horizontal plane is 4° to 6°, which can further balance conveying efficiency and energy consumption.

[0040] A second aspect of this application provides an alumina ultra-dense phase transport system, including the alumina ultra-dense phase transport mechanism of any one of the first aspects.

[0041] The alumina ultra-dense phase conveying system provided in this embodiment includes an alumina ultra-dense phase conveying mechanism. The alumina ultra-dense phase conveying mechanism is divided into an upper material chamber 1 and a lower air chamber 4 by a breathable cloth 3. Low-pressure air flows from each independent air chamber segment 2 through the breathable cloth 3 to fluidize the alumina, which greatly reduces the breakage rate of alumina.

[0042] In one embodiment, the alumina ultra-dense phase conveying system further includes an air supply device, which includes a centrifugal fan for supplying air to the gas chamber segment 2, so that the alumina material forms a fluid in the material chamber 1 and moves in a direction.

[0043] The centrifugal fan provides a low-pressure airflow of no more than 7000Pa to the air chamber 4, and the alumina layer is fluidized through the breathable cloth 3. The pure pneumatic drive does not require mechanical transmission, which greatly reduces the failure rate and has low energy consumption and high reliability.

[0044] In one possible implementation, the alumina ultra-dense phase conveying system further includes a bidirectional automatic regulating valve, which is installed at the air inlet or exhaust end of the conveying system to regulate the air volume.

[0045] The bidirectional regulating valve is installed in either the air supply duct (inlet end) or the exhaust duct (outlet end). It dynamically adjusts the valve opening based on real-time response signals to regulate the air pressure in chamber 4, ensuring stable fluidization of alumina. Adjustment at the inlet end matches the centrifugal fan output, maintaining a low-pressure air-to-solid ratio; adjustment at the exhaust end balances the pressure difference in the material column, preventing material stagnation due to insufficient negative pressure.

[0046] In one possible implementation, the alumina ultra-dense phase conveying system further includes an exhaust gas dust collector, located at the end of the conveying system, for collecting and treating the emitted gas.

[0047] Among them, the exhaust dust collector (balanced material column) can be directly connected to the exhaust end of the alumina ultra-dense phase conveying mechanism. The negative pressure regulating valve maintains the stability of the system pressure gradient, ensuring that the alumina continues to flow in a direction under the static pressure difference of the material column.

[0048] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0050] In view of the detailed description above, these and other changes can be made to these embodiments. This written description includes embodiments of the best mode disclosed in this utility model. The patent scope of this utility model is defined by the claims, which are not limited by this disclosure. The protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in this utility model, based on the technical solution and concept of this utility model, are within the protection scope of this utility model.

Claims

1. An alumina ultra-dense phase transport mechanism, characterized in that, include: Material chamber (1) is used to contain alumina material; Air chamber (4), the air chamber (4) is located below the material chamber (1), the air chamber (4) includes several independent air chamber segments (2); A breathable cloth (3) is disposed between each of the air chamber segments (2) and the material chamber (1) to separate the air chamber (4) and the material chamber (1) and to support the fluidization process of the alumina material.

2. The alumina ultra-dense phase conveying mechanism according to claim 1, characterized in that, The number of air chamber segments (2) is at least two, and the air chamber segments (2) are detachably connected to the material chamber (1).

3. The alumina ultra-dense phase conveying mechanism according to claim 2, characterized in that, The material chamber (1), the breathable cloth (3), and the air chamber segment (2) are connected by bolts.

4. The alumina ultra-dense phase conveying mechanism according to claim 1, characterized in that, The bottom of the material chamber (1) is provided with several bottom plates at intervals, and an opening is formed between adjacent bottom plates. The breathable cloth (3) and the air chamber (4) are provided on the opening. The shape and size of the breathable cloth (3) are adapted to the air chamber segment (2).

5. The alumina ultra-dense phase conveying mechanism according to claim 4, characterized in that, The breathable fabric (3) is made of polypropylene and has a temperature resistance of at least 160°C.

6. The alumina ultra-dense phase conveying mechanism according to claim 1, characterized in that, The angle between the material chamber (1) and the horizontal plane is not less than 3°.

7. An alumina ultra-dense phase transport system, characterized in that, Includes the alumina ultra-dense phase transport mechanism as described in any one of claims 1-6.

8. The alumina ultra-dense phase transport system according to claim 7, characterized in that, Also includes: An air supply device, comprising a centrifugal fan, is used to supply air to the air chamber segment (2) so that the alumina material forms a fluid and moves in a direction within the material chamber (1).

9. The alumina ultra-dense phase transport system according to claim 8, characterized in that, Also includes: A two-way automatic regulating valve is installed at the air inlet or exhaust end of the conveying system to regulate the air volume.

10. The alumina ultra-dense phase transport system according to claim 9, characterized in that, Also includes: An exhaust dust collector is installed at the end of a conveying system to collect and treat emitted gases.

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