Special spiral conveyor for conveying acidified materials

Abstract

The utility model relates to the technical field of spiral conveyors, in particular to a special spiral conveyor for conveying acidified materials, which comprises a driving device, a rotating shaft is in transmission connection with the driving device, a traveling mechanism is connected with the lower end of the driving device, a connecting cylinder is fixedly connected with the traveling mechanism, and a screw rod is arranged on the connecting cylinder. The rotating shaft is rotationally connected with the connecting cylinder through a sealing bearing, a spiral blade is fixedly connected to the rotating shaft, a plurality of mounting grooves are formed in the spiral blade, and alloy tool bits are connected into the mounting grooves through fixing mechanisms. The screw conveyor has the advantages that material blockage during operation of the screw conveyor is avoided, and meanwhile, the alloy tool bit is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of screw conveyors, in particular to a special screw conveyor for conveying acidified materials. Background Art

[0002] Acidizing material, a mixture of spodumene powder and 98% concentrated sulfuric acid, serves as an intermediate raw material in the lithium ore extraction process. It is typically transported via a screw conveyor to the acidification kiln for calcination. Because the acidizing material is a sticky, wet material, it easily adheres to the screw blades, shaft, and inner wall of the spiral tube during conveying. This buildup occurs between the blades and shaft, reducing the conveyor's internal space. Long-term operation can lead to screw blockage, excessive operating resistance, reduced conveying capacity, and even inability to convey material. Material agglomeration can also cause the screw shaft to seize and malfunction. Furthermore, because the acidizing material is a mixture of highly abrasive spodumene powder and strong acid, and the temperature inside the acidification kiln reaches as high as 300°C, material adhering to the screw can easily corrode the blades, shaft, and casing. Therefore, a screw conveyor that can handle sticky and easily agglomerated materials while also being resistant to high temperatures and strong acid corrosion is needed. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art that material agglomeration may cause the screw shaft to become stuck and the screw machine to malfunction, and proposes a special screw conveyor for conveying acidified materials.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A special screw conveyor for conveying acidified materials is designed, which includes a driving device, a rotating shaft connected to the driving device, a traveling mechanism connected to the lower end of the driving device, a connecting cylinder fixedly connected to the traveling mechanism, the rotating shaft is rotatably connected to the connecting cylinder through a sealed bearing, a spiral blade is fixedly connected to the rotating shaft, and multiple mounting grooves are provided on the spiral blade, and alloy cutter heads are connected to the multiple mounting grooves through a fixing mechanism.

[0006] Preferably, the fixing mechanism includes a fixing block, the fixing block is fixedly connected to the alloy cutter head, a fixing bolt is threadedly passed through the fixing block, and the fixing bolt is fixedly connected to the spiral blade.

[0007] Preferably, the connecting tube includes a connecting plate, the connecting plate is fixedly connected to the walking mechanism, a connecting ring is fixedly connected to the connecting plate via a plurality of connecting bolts, and a connecting sleeve is fixedly connected to the connecting ring.

[0008] Preferably, a suspension bearing is connected to the rotating shaft, and the suspension bearing is suspended on the connecting sleeve.

[0009] Preferably, the driving device includes a motor, a base is installed on the motor, a motor reducer is provided on the motor and is connected to the motor reducer via a coupling, and the motor reducer is in driving connection with the rotating shaft.

[0010] Preferably, the spiral blades, rotating shaft and connecting cylinder are all made of duplex stainless steel.

[0011] Preferably, ceramic coating is sprayed on the spiral blades and the rotating shaft.

[0012] The utility model proposes a special screw conveyor for conveying acidified materials, which has the beneficial effect that when the spiral blades rotate, the alloy cutter heads located on the outer edges of the spiral blades can break up and evacuate the materials that have been stuck together, thus avoiding blockage when the spiral machine is running, and at the same time facilitating the replacement of the alloy cutter heads. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of a special screw conveyor for conveying acidified materials proposed by the utility model;

[0014] Figure 2 The utility model provides a cross-sectional view of the spiral blade portion of a special screw conveyor for conveying acidified materials.

[0015] In the figure: 1. Drive device; 2. Travel mechanism; 3. Feeding port; 4. Spiral blade; 5. Rotating shaft; 6. Alloy cutter head; 7. Suspension bearing; 8. Connecting sleeve; 9. Connecting bolt; 10. Connecting plate; 11. Connecting ring; 12. Fixing block; 13. Fixing bolt. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Reference Figure 1-2 A special screw conveyor for conveying acidifying materials includes a driving device 1, a rotating shaft 5 is connected to the upper end of the driving device 1, and a walking mechanism 2 is connected to the lower end of the driving device 1. The walking mechanism 2 is composed of a walking drive motor, a driving wheel pair, a guide rail and a limit switch. The walking mechanism is used to move out the screw machine during maintenance, which is convenient for maintenance operations on the screw machine and the acidifying kiln. The walking mechanism is an existing technology and will not be described here.

[0018] A connecting cylinder is fixedly connected to the walking mechanism 2, and the rotating shaft 5 is rotatably connected to the connecting cylinder through a sealed bearing. A spiral blade 4 is fixedly connected to the rotating shaft 5. Multiple mounting grooves are provided on the spiral blade 4. Alloy cutter heads 6 are connected to the multiple mounting grooves through a fixing mechanism. The cutting working surface of the alloy cutter head 6 forms a certain angle with the tangent direction of the spiral blade 4. When the spiral blade 4 rotates, the alloy cutter head 6 located at the outer edge of the spiral blade 4 can crush and evacuate the materials that are stuck together to avoid blockage during the operation of the spiral machine.

[0019] The fixing mechanism includes a fixing block 12, which is fixedly connected to the alloy cutter head 6. A fixing bolt 13 is threaded through the fixing block 12, and the fixing bolt 13 is fixedly connected to the spiral leaf 4. The fixing bolt 13 is used to remove the alloy cutter head 6, and when the alloy cutter head 6 is worn, the alloy cutter head 6 can be replaced.

[0020] The connecting tube includes a connecting plate 10, which is fixedly connected to the walking mechanism 2. A connecting ring 11 is fixedly connected to the connecting plate 10 through multiple connecting bolts 9. A connecting sleeve 8 is fixedly connected to the connecting ring 11. The connecting tube is composed of multiple parts to facilitate the disassembly of the connecting sleeve 8. When the connecting sleeve 8 is removed, the spiral blade 4 is partially exposed so that the alloy cutter head 6 can be disassembled.

[0021] The rotating shaft 5 is connected to a suspension bearing 7, which is suspended on a connecting sleeve 8. The suspension bearing 7 is used to ensure the coaxiality of the screw, bear the weight of the screw and the force during operation, and ensure the normal operation of the screw conveyor. A feeding port 3 is provided on the connecting sleeve 8.

[0022] The driving device 1 includes a motor, a base is installed on the motor, a motor reducer is provided on the motor and is connected to the motor reducer through a coupling, and the motor reducer is transmission-connected to the rotating shaft 5. The base is fixedly connected to the walking mechanism 2.

[0023] The spiral blade 4, the rotating shaft 5 and the connecting tube are all made of duplex stainless steel, which prevents the equipment from being corroded in strong acid and high temperature environments.

[0024] The spiral blades 4 and the rotating shaft 5 are sprayed with ceramic coating to reduce the adhesion of materials. At the same time, the ceramic working surface has high wear resistance, which meets the equipment's requirements for material wear resistance.

[0025] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A special screw conveyor for conveying acidified materials, comprising a driving device (1), characterized in that: The driving device (1) is connected to a rotating shaft (5) in a transmission manner. The lower end of the driving device (1) is connected to a walking mechanism (2). The walking mechanism (2) is fixedly connected to a connecting cylinder. The rotating shaft (5) is rotatably connected to the connecting cylinder via a sealed bearing. A spiral blade (4) is fixedly connected to the rotating shaft (5). The spiral blade (4) is provided with multiple mounting grooves. Alloy cutter heads (6) are connected to the multiple mounting grooves via a fixing mechanism.

2. The screw conveyor for conveying acidified materials according to claim 1, characterized in that: The fixing mechanism comprises a fixing block (12), the fixing block (12) is fixedly connected to the alloy cutter head (6), a fixing bolt (13) is threadedly connected through the fixing block (12), and the fixing bolt (13) is fixedly connected to the spiral blade (4).

3. The screw conveyor for conveying acidified materials according to claim 1, characterized in that: The connecting tube comprises a connecting plate (10), the connecting plate (10) is fixedly connected to the walking mechanism (2), a connecting ring (11) is fixedly connected to the connecting plate (10) via a plurality of connecting bolts (9), and a connecting sleeve (8) is fixedly connected to the connecting ring (11).

4. The screw conveyor for conveying acidified materials according to claim 3, characterized in that: The rotating shaft (5) is connected to a suspension bearing (7), and the suspension bearing (7) is suspended on a connecting sleeve (8).

5. The screw conveyor for conveying acidified materials according to claim 1, characterized in that: The driving device (1) comprises a motor, a base is mounted on the motor, a motor reducer is provided on the motor and is connected to the motor reducer via a coupling, and the motor reducer is in driving connection with the rotating shaft (5).

6. The screw conveyor for conveying acidified materials according to claim 1, characterized in that: The spiral blade (4), the rotating shaft (5) and the connecting cylinder are all made of duplex stainless steel.

7. The screw conveyor for conveying acidified materials according to claim 1, characterized in that: Ceramic coating is sprayed on the spiral blade (4) and the rotating shaft (5).

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