Spiral blade of spiral conveyor

Abstract

The utility model discloses a spiral blade of a spiral conveyer, which relates to the technical field of spiral conveyors, and comprises a spiral conveying cylinder, a gear reducer and a driving motor, the driving motor is connected with the gear reducer, the gear reducer is connected with a main shaft, and the main shaft is connected with the spiral conveying cylinder. A butt joint groove is formed in the outer surface of the main shaft, a first blade and a second blade are arranged on the outer surface of the main shaft, and by means of the connecting assembly, when the first blade or the second blade is abraded, a worker can conveniently disassemble the spiral conveying barrel and disassemble and assemble the corresponding blade; the difficulty of replacing damaged blades is reduced to a great extent, the working efficiency during maintenance is improved, and meanwhile butt joint can be conveniently carried out by means of the sealing protrusions and the sealing grooves.

Description

Technical Field

[0001] This utility model relates to the field of screw conveyor technology, and in particular to a screw blade for a screw conveyor. Background Technology

[0002] A screw conveyor is a machine that uses a motor to drive a rotating screw to push materials to achieve the purpose of conveying. It can convey materials horizontally, inclined, or vertically, and has advantages such as simple structure, small cross-sectional area, good sealing, convenient operation, easy maintenance, and suitability for enclosed transport. The screw conveyor achieves conveying by pushing materials with rotating helical blades. The force that prevents the material from rotating with the screw conveyor blades is the material's own weight and the frictional resistance between the material and the screw conveyor casing.

[0003] In existing technologies, screw conveyors are generally used for transporting raw materials in fields such as grain processing, chemical industry, building materials industry, and food processing. As the usage time increases, the wear of the screw blades also increases. When the screw blades wear to a certain extent, they need to be replaced. However, in existing technologies, the blades are usually welded to the main shaft, which not only makes replacement difficult but also significantly increases the replacement time. In view of this, we propose a screw blade for screw conveyors. Utility Model Content

[0004] The purpose of this invention is to provide a spiral blade for a screw conveyor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a spiral blade for a spiral conveyor, comprising a spiral conveying cylinder, a gear reducer, and a drive motor. The drive motor is connected to the gear reducer, and a main shaft is connected to the gear reducer. A mating groove is formed on the outer surface of the main shaft. A first blade and a second blade are provided on the outer surface of the main shaft. A mating protrusion adapted to the mating groove is fixedly connected to the side surface of the first blade and the second blade near the main shaft. Sealing protrusions are fixedly connected to the left and right sides of the first blade, and sealing grooves adapted to the sealing protrusions are fixedly connected to the left and right sides of the second blade. A fixing groove is formed on the upper surface of the first blade and the second blade. A fitting groove is formed on the side surface of the first blade and the second blade near the main shaft. A connecting assembly is provided inside the fixing groove. The connecting assembly includes a vertical plate, which is slidably connected inside the fixing groove. The upper surface of the vertical plate extends out of the upper side of the fixing groove. A U-shaped connecting plate is fixedly connected to the upper surfaces of the two vertical plates.

[0006] By adopting the above technical solution, it is possible for staff to easily replace or disassemble damaged blades after they have worn down due to long-term use, thus reducing the difficulty of replacing blades.

[0007] Preferably, the U-shaped connecting plate consists of two vertical plates and one horizontal plate. The vertical plate on the side of the U-shaped connecting plate closest to the main shaft is adapted to the mating groove. The first blade and the second blade are respectively provided with threaded grooves on the surface away from the main shaft. The vertical plate on the side of the U-shaped connecting plate away from the main shaft is also provided with two threaded grooves. The threaded grooves are internally threaded with fixing bolts. The upper end of the main shaft is fixedly connected with a tapered mating block, and the lower end of the main shaft is provided with a tapered mating groove adapted to the tapered mating block.

[0008] By adopting the above technical solution, when the spindle is further extended, it can be easily connected through tapered docking grooves and tapered docking blocks, reducing the difficulty of fixing the spindles together.

[0009] Preferably, the outer surface of the main shaft is fitted with a first connecting flange, the spiral conveying cylinder is composed of two half-cylinders, the left half-cylinder is provided with a feed port, each half-cylinder is fixedly connected with a connecting lug, and the two connecting lugs are also threadedly connected with fixing bolts. The outer surface of the spiral conveying cylinder is fitted with a second connecting flange, the upper side of the spiral conveying cylinder is provided with a discharge head, the outer surface of the discharge head is fitted with a third connecting flange, and the second connecting flange and the third connecting flange are also connected by fixing bolts.

[0010] By adopting the above technical solution, the screw conveyor can be modified by adding or removing the screw conveyor drum and main shaft according to actual needs, thereby improving the applicability of the screw conveyor.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. The spiral blades of this screw conveyor, through the connecting components, allow workers to easily disassemble the screw conveyor drum and disassemble and install the corresponding blades when the first or second blade is worn. This greatly reduces the difficulty of replacing damaged blades and improves the efficiency of maintenance. At the same time, the sealing protrusions and sealing grooves facilitate docking.

[0013] 2. The screw blades of this screw conveyor can not only extend the length of the screw conveyor cylinder with the help of the second connecting flange, but also extend and connect the main shaft with the help of the first connecting flange, the conical docking block and the conical docking groove, thereby improving the applicability of the screw conveyor and making it easy to increase or decrease the length according to actual needs. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the structure of the spiral blade of a spiral conveyor according to the present invention;

[0016] Figure 2 This is a schematic diagram of the main shaft of this utility model;

[0017] Figure 3 This is a schematic diagram of the threaded groove of this utility model;

[0018] Figure 4 This is a schematic diagram of the conical docking groove of this utility model;

[0019] Figure 5 This is a schematic diagram of the separation of the first blade of this utility model;

[0020] Figure 6 This is a schematic diagram of the separation of the spiral conveyor cylinder of this utility model;

[0021] Figure 7 for Figure 2 Enlarged view of point A in the middle.

[0022] Reference numerals: 1. Screw conveyor; 2. Gear reducer; 3. Drive motor; 4. Main shaft; 5. Connecting groove; 6. First blade; 7. Second blade; 8. Sealing protrusion; 9. Sealing groove; 10. Fixing groove;

[0023] 11. Fitting groove; 12. Vertical plate; 13. U-shaped connecting plate; 14. Threaded groove; 15. Fixing bolt; 16. Conical mating block; 17. Conical mating groove; 18. First connecting flange;

[0024] 19. Feed inlet; 20. Connecting lug; 21. Second connecting flange; 22. Discharge head; 23. Third connecting flange. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Please see Figure 1-7This utility model provides a technical solution: a spiral blade for a spiral conveyor, including a spiral conveying cylinder 1, a gear reducer 2 for increasing torque and reducing rotational speed, and a drive motor 3 for outputting power. The drive motor 3 is connected to the gear reducer 2. A main shaft 4 for power transmission is connected to the gear reducer 2. A docking groove 5 for structural docking is opened on the outer surface of the main shaft 4. A first blade 6 and a second blade 7 for conveying materials are provided on the outer surface of the main shaft 4. A docking protrusion adapted to the docking groove 5 is fixedly connected to the side surface of the first blade 6 and the second blade 7 near the main shaft 4 for docking work. Sealing protrusions 8 for improving the sealing performance after the first blade 6 and the second blade 7 are connected are fixedly connected to the left and right sides of the first blade 6.

[0027] The left and right sides of the second blade 7 are respectively fixedly connected with sealing grooves 9, which are adapted to the sealing protrusions 8 and are also used to improve the sealing performance after the first blade 6 and the second blade 7 are connected. Pull the U-shaped connecting plate 13 upward. After the U-shaped connecting plate 13 is pulled, it drives the two vertical plates 12 to move synchronously. After the two vertical plates 12 move, they disengage from the fixing groove 10. Then, directly pull out the first blade 6 or the second blade 7 that needs to be replaced, align the corresponding sealing protrusions 8 or sealing grooves 9 on the new first blade 6 or the second blade 7 and push them back in. The upper surfaces of the first blade 6 and the second blade 7 are both provided with sealing grooves 9 for connecting the first blade 6 and the second blade 7. The fixing groove 10 of blade 6 and second blade 7, and the mating groove 11 of both blade 6 and second blade 7 near the main shaft 4 are provided to improve the sealing of the joint between the first blade 6 and second blade 7. The fixing groove 10 is provided with a connecting component. Through the connecting component, when the first blade 6 or second blade 7 is worn, the operator can easily disassemble the screw conveyor cylinder 1 and disassemble and install the corresponding blade, which greatly reduces the difficulty of replacing the damaged blade and improves the work efficiency during maintenance. At the same time, the sealing protrusion 8 and sealing groove 9 facilitate docking.

[0028] The connecting assembly includes a vertical plate 12 for connecting the first blade 6 and the second blade 7 with the fixing groove 10. The vertical plate 12 is slidably connected inside the fixing groove 10. The upper surface of the vertical plate 12 extends out of the upper surface of the fixing groove 10. A U-shaped connecting plate 13 for connecting the two vertical plates 12 is fixedly connected to the upper surface of the two vertical plates 12. The U-shaped connecting plate 13 consists of two vertical plates and a horizontal plate. The two vertical plates 12 are aligned with the two fixing grooves 10 and inserted. Then, the U-shaped connecting plate 13 is fixed again with the fixing bolts 15. At this time, the vertical plate of the U-shaped connecting plate 13 on the side closer to the main shaft 4 will fit with the fitting groove 11 to improve the sealing of the connection. The vertical plate of the U-shaped connecting plate 13 on the side closer to the main shaft 4 is adapted to the fitting groove 11. The surfaces of the first blade 6 and the second blade 7 away from the main shaft 4 are respectively provided with threaded grooves 14 for connecting and fixing the U-shaped connecting plate 13, the first blade 6 and the second blade 7.

[0029] Two threaded grooves 14 are also provided on the vertical plate of the U-shaped connecting plate 13 away from the main shaft 4. The threaded grooves 14 are internally threaded with fixing bolts 15 for connecting and fixing the U-shaped connecting plate 13, the first blade 6 and the second blade 7. First, use a tool to remove the fixing bolts 15 on the screw conveyor 1. Then rotate the main shaft 4 so that the blade to be replaced faces the operator. Use a tool again to remove the fixing bolts 15 used to fix the U-shaped connecting plate 13. The upper end of the main shaft 4 is fixedly connected with a tapered docking block 16 for docking the main shaft 4. The lower end of the main shaft 4 is provided with a tapered docking groove 17 that is adapted to the tapered docking block 16 and is also used for docking the main shaft 4. Take out the new main shaft 4 and make the tapered docking groove 17 on the main shaft 4 fit with the tapered docking block 16. Then connect the two main shafts 4 with the first connecting flange 18. The outer surface of the main shaft 4 is fitted with the first connecting flange 18 for connecting the main shafts 4.

[0030] The screw conveyor 1 consists of two half-cylinders. The left half-cylinder has a feed inlet 19 for material entry. Each half-cylinder is fixedly connected to a connecting lug 20, and both lugs 20 are threaded with fixing bolts 15. A second connecting flange 21 is fitted onto the outer surface of the screw conveyor 1 for fixing the two halves together. A discharge head 22 is located on the upper side of the screw conveyor 1 for material discharge. A third connecting flange 23 is fitted onto the outer surface of the discharge head 22 for connecting and fixing it to the screw conveyor 1. The second connecting flange 21 and the third connecting flange 23 are separated. Then, the new screw conveyor cylinder 1 is taken out and the two sections of screw conveyor cylinder 1 are aligned and connected by the second connecting flange 21. The second connecting flange 21 and the third connecting flange 23 are also connected by fixing bolts 15. Not only can the length of the screw conveyor cylinder 1 be extended by the second connecting flange 21, but the main shaft 4 can also be extended and connected by the first connecting flange 18, the tapered docking block 16 and the tapered docking groove 17, which improves the applicability of the screw conveyor and makes it easy to increase or decrease the length according to actual needs.

[0031] Working principle: When the blades wear out after a period of use, firstly, use tools to remove the fixing bolts 15 on the screw conveyor drum 1. Then, rotate the main shaft 4 so that the blade to be replaced faces the operator. Again, use tools to remove the fixing bolts 15 used to fix the U-shaped connecting plate 13. Then, pull the U-shaped connecting plate 13 upwards. After being pulled, the U-shaped connecting plate 13 synchronously drives the two vertical plates 12 to move. After the two vertical plates 12 move, they disengage from the fixing groove 10. Then, directly pull out the first blade 6 or the second blade 7 to be replaced. Align the corresponding sealing protrusion 8 or sealing groove 9 on the new first blade 6 or the second blade 7 and push it back in. Finally, align the two vertical plates 12 with the two fixing grooves. Align and insert 10, then re-fix the U-shaped connecting plate 13 with the fixing bolt 15. At this time, the vertical plate of the U-shaped connecting plate 13 near the main shaft 4 will fit with the mating groove 11, improving the sealing of the connection and preventing foreign objects from entering. When it is necessary to increase the length of the screw conveyor, the second connecting flange 21 and the third connecting flange 23 can be separated. Then, the new screw conveyor cylinder 1 can be taken out and the two screw conveyor cylinders 1 can be aligned and connected with the second connecting flange 21. At the same time, the new main shaft 4 can be taken out and the tapered docking groove 17 on the main shaft 4 can fit with the tapered docking block 16. The two main shafts 4 can be connected with the first connecting flange 18, thereby completing the extension of the screw conveyor.

[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A spiral blade for a screw conveyor, comprising a screw conveyor drum (1), a gear reducer (2), and a drive motor (3), characterized in that: The drive motor (3) is connected to the gear reducer (2). The gear reducer (2) is connected to the main shaft (4). The outer surface of the main shaft (4) is provided with a mating groove (5). The outer surface of the main shaft (4) is provided with a first blade (6) and a second blade (7). The first blade (6) and the second blade (7) are both fixedly connected with mating protrusions that are compatible with the mating groove (5) on the side surface of the main shaft (4). The left and right sides of the first blade (6) are respectively fixedly connected with sealing protrusions (8). The left and right sides of the second blade (7) are respectively fixedly connected with sealing grooves (9) that are compatible with the sealing protrusions (8). The upper surface of the first blade (6) and the second blade (7) is provided with a fixing groove (10). The side surface of the first blade (6) and the second blade (7) near the main shaft (4) is provided with a fitting groove (11). The fixing groove (10) is provided with a connecting component inside.

2. The helical blade of a screw conveyor according to claim 1, characterized in that: The connecting assembly includes a vertical plate (12) which is slidably connected inside the fixing groove (10). The upper surface of the vertical plate (12) extends out of the upper side of the fixing groove (10), and a U-shaped connecting plate (13) is fixedly connected to the upper surfaces of the two vertical plates (12).

3. The helical blade of a screw conveyor according to claim 2, characterized in that: The U-shaped connecting plate (13) consists of two vertical plates and one horizontal plate. The vertical plate of the U-shaped connecting plate (13) on the side closer to the main shaft (4) is adapted to the fitting groove (11). The first blade (6) and the second blade (7) on the side away from the main shaft (4) are respectively provided with threaded grooves (14).

4. The helical blade of a screw conveyor according to claim 3, characterized in that: The U-shaped connecting plate (13) also has two threaded grooves (14) on the vertical plate on the side away from the main shaft (4), and the threaded grooves (14) are internally threaded with fixing bolts (15).

5. The helical blade of a screw conveyor according to claim 4, characterized in that: The upper end of the main shaft (4) is fixedly connected to a tapered docking block (16), and the lower end of the main shaft (4) is provided with a tapered docking groove (17) that is adapted to the tapered docking block (16).

6. The helical blade of a screw conveyor according to claim 5, characterized in that: The outer surface of the main shaft (4) is fitted with a first connecting flange (18). The spiral conveying cylinder (1) is composed of two half cylinders. The left half cylinder is provided with a feed port (19), and each half cylinder is fixedly connected with a connecting lug (20).

7. The helical blade of a screw conveyor according to claim 6, characterized in that: The two connecting ears (20) are also threaded with fixing bolts (15). The outer surface of the spiral conveyor (1) is fitted with a second connecting flange (21). The upper side of the spiral conveyor (1) is provided with a discharge head (22). The outer surface of the discharge head (22) is fitted with a third connecting flange (23).

8. The helical blade of a screw conveyor according to claim 7, characterized in that: The second connecting flange (21) and the third connecting flange (23) are also connected by fixing bolts (15).

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