Self-cleaning spiral blade for spiral conveyor

Abstract

The self-cleaning spiral blade for the spiral conveyor comprises a main shaft and a blade body and further comprises an installation base, the main shaft is of a hollow structure and is rotationally connected with the installation base, a plurality of water spraying holes are formed in the main shaft at intervals and are close to the blade body, an inner pipe is arranged in the main shaft, and a plurality of via holes are formed in the inner pipe at intervals. A water inlet pipe and a movable rod are arranged on the mounting seat, the movable rod and the inner pipe are coaxially arranged, the movable rod can move in the axial direction of the main shaft, an adjusting rod is further arranged on the mounting seat, a protruding block is arranged on the adjusting rod, acute angles are formed between the length direction of the protruding block and the axial direction of the adjusting rod and between the length direction of the protruding block and the axial direction of the movable rod, and a groove is formed in the movable rod. When the adjusting rod moves, the protruding block pushes the movable rod to move and enables the via hole and the water spraying hole to be communicated or staggered. The technical problem that an existing spiral blade is inconvenient to clean is solved, and the technical effects that the blade is convenient to clean, and the blade does not need to be detached when being cleaned are achieved.

Description

Technical Field

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

[0002] A screw conveyor is a machine that uses a motor to drive a screw blade to rotate and push materials to achieve the purpose of conveying. In the process of completing the conveying operation, the screw blade also has the functions of stirring and mixing the materials.

[0003] In the process of conveying materials, dust or debris easily adheres to the surface of the spiral blades of existing screw conveyors. After dust accumulates and clumps on the spiral blades over a long period of time, it can easily cause material jamming, affecting the stability of material conveying and the stability of the spiral blades during rotation. At this time, it is necessary to stop the machine to clean the spiral blades. However, due to the many dead angles in the spiral structure of the spiral blades, it is usually necessary to remove the spiral blades from the screw conveyor for washing or use special cleaning equipment, which makes it inconvenient to clean the spiral blades. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a self-cleaning spiral blade for screw conveyors, which solves the problem that spiral blades are inconvenient to clean in existing technologies.

[0005] According to an embodiment of this utility model, a self-cleaning spiral blade for a screw conveyor includes a main shaft and blades disposed on the main shaft, and a mounting base. The main shaft has a hollow structure and is rotatably connected to the mounting base. Multiple water spray holes are spaced apart on the main shaft and are located close to the blades. An inner tube movable along the axial direction of the main shaft is provided inside the main shaft. Multiple through holes are spaced apart on the inner tube. The mounting base is provided with a water inlet pipe communicating with the inner tube and a movable rod rotatably connected to the inner tube. The movable rod is coaxially arranged with the inner tube and can move along the axial direction of the main shaft. The mounting base is also provided with a movable adjusting rod. The moving direction of the adjusting rod is perpendicular to the moving direction of the movable rod. A protrusion is provided on the adjusting rod, and the length of the protrusion forms an acute angle with both the axial direction of the adjusting rod and the axial direction of the movable rod. A groove cooperating with the protrusion is provided on the movable rod. When the adjusting rod moves, the protrusion pushes the movable rod to move, causing the through holes to connect with or be misaligned with the water spray holes.

[0006] Furthermore, the mounting base is provided with a bearing, which cooperates with the main shaft.

[0007] Furthermore, a limiting block is provided on the inner peripheral wall of the main shaft, the length direction of the limiting block is consistent with the length direction of the main shaft, and a limiting groove is provided on the inner tube to cooperate with the limiting block.

[0008] Furthermore, the water spray holes are arranged in pairs facing each other, and the two water spray holes arranged in pairs are located on opposite sides of the blade.

[0009] Furthermore, the mounting base has a receiving cavity communicating with the water inlet pipe, and the portion of the inner tube located within the receiving cavity is provided with a water inlet.

[0010] Furthermore, the mounting base is provided with two sealing rings spaced apart, and the two sealing rings are respectively located on opposite sides of the receiving cavity.

[0011] Furthermore, one end of the movable rod is provided with a rotatable connecting seat, and the inner tube is provided with a connecting pin that cooperates with the connecting seat.

[0012] Furthermore, the mounting base is provided with a guide groove, the length direction of which is consistent with the moving direction of the adjusting rod, and the adjusting rod is provided with a guide rod that cooperates with the guide groove.

[0013] Furthermore, the guide rod has a threaded portion and a locking nut that mates with the threaded portion is provided on the guide rod, and the locking nut abuts against the mounting base.

[0014] Furthermore, the mounting base is also provided with a connecting flange, which is located at the end of the mounting base away from the spindle.

[0015] Compared with existing technologies, this utility model has the following advantages: By using an inner tube that can be movably installed inside the main shaft, the cleaning fluid injected into the water inlet pipe is guided to each spray hole and sprayed onto the blades, thus rinsing the surface of the blades to remove dust or debris adhering to the blade surface, achieving blade cleaning without removing the blades during the cleaning process. Furthermore, when the adjusting rod moves on the mounting base, it drives the movable rod to move, and the inner tube and the movable rod move synchronously. When the movable rod moves to the position where the through hole connects with the spray hole, the cleaning fluid in the inner tube can enter the spray hole to clean the blades. When the movable rod moves to the position where the through hole and the spray hole are misaligned, the cleaning fluid in the inner tube cannot pass through the through hole to enter the spray hole. At this time, the inner tube seals the spray hole to prevent material or dust from entering the inner tube during the material conveying process and causing blockage. This solves the technical problem of the inconvenience of cleaning existing spiral blades, resulting in the technical effect of conveniently cleaning the blades without removing them during cleaning. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the structure of a self-cleaning spiral blade for a screw conveyor according to an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of the inner tube of the self-cleaning spiral blade of a spiral conveyor according to an embodiment of the present invention, when the through hole and the water spray hole are connected.

[0018] Figure 3 This is a cross-sectional view of the inner tube of the self-cleaning spiral blade of a spiral conveyor according to an embodiment of the present invention, when the through hole and the water spray hole are misaligned.

[0019] Figure 4 This is a partially exploded view of a portion of the structure of a self-cleaning spiral blade for a spiral conveyor according to an embodiment of the present invention.

[0020] In the above attached diagram: 1. Main shaft; 11. Water spray hole; 12. Limiting block; 2. Blade; 3. Mounting base; 31. Water inlet pipe; 32. Bearing; 33. Receiving cavity; 34. Sealing ring; 35. Guide groove; 36. Connecting flange; 4. Inner tube; 41. Through hole; 42. Limiting groove; 43. Connecting pin; 44. Water inlet; 5. Movable rod; 51. Groove; 52. Connecting base; 6. Adjusting rod; 61. Protrusion; 62. Guide rod; 63. Locking nut. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 4 As shown in the figure, this utility model embodiment proposes a self-cleaning spiral blade 2 for a screw conveyor, which is installed in the screw conveyor and used to push materials for material conveying operations. Moreover, the self-cleaning spiral blade 2 for the screw conveyor does not need to be removed from the screw conveyor when cleaning.

[0023] Please refer to Figure 1 , Figure 2 and Figure 3The self-cleaning spiral blade 2 of the screw conveyor includes a main shaft 1 and blades 2 mounted on the main shaft 1, and a mounting base 3. The mounting base 3 is mounted on the screw conveyor. The main shaft 1 is a hollow structure and is rotatably connected to the mounting base 3. The end of the main shaft 1 away from the mounting base 3 is connected to the power unit of the screw conveyor. The power unit drives the main shaft 1 to rotate, which in turn drives the blades 2 to perform material conveying operations. The main shaft 1 is provided with a plurality of water spray holes 11 spaced apart and the water spray holes 11 are located close to the blades 2. The main shaft 1 is provided with an inner tube 4 that can move along the axial direction of the main shaft 1. The inner tube 4 is provided with a plurality of through holes 41 spaced apart. The mounting base 3 is provided with a water inlet pipe 31 communicating with the inner tube 4 and a movable rod 5 rotatably connected to the inner tube 4. The water inlet pipe 31 is used to guide cleaning liquid into the inner tube 4. The movable rod 5 is coaxially arranged with the inner tube 4 and The movable rod 5 can move along the axial direction of the main shaft 1. The mounting base 3 is also provided with a movable adjusting rod 6. The moving direction of the adjusting rod 6 is perpendicular to the moving direction of the movable rod 5. The adjusting rod 6 is provided with a protrusion 61, and the length of the protrusion 61 forms an acute angle with the axial direction of the adjusting rod 6 and the axial direction of the movable rod 5, respectively. The movable rod 5 is provided with a groove 51 that cooperates with the protrusion 61. When the adjusting rod 6 moves, the protrusion 61 pushes the movable rod 5 to move and makes the through hole 41 connect with or misalign with the water spray hole 11. When the through hole 41 connects with the water spray hole 11, the cleaning liquid in the inner tube 4 can pass through the through hole 41 and spray out from the water spray hole 11 to the blade 2, thereby rinsing the blade 2. When the through hole 41 is misaligned with the water spray hole 11, the inner tube 4 closes the water spray hole 11 to prevent dust or materials from entering the inner tube 4 and causing blockage of the inner tube 4.

[0024] Specifically, the self-cleaning operation of the screw conveyor's self-cleaning screw blade 2 provided in this embodiment is as follows: First, the adjusting rod 6 is moved to adjust the position of the movable rod 5, so that the inner tube 4 moves under the drive of the movable rod 5 to the position where the through hole 41 communicates with the water spray hole 11. At this time, cleaning fluid is injected into the water inlet pipe 31 and guided by the inner tube 4 to each of the water spray holes 11 and sprayed onto the blade 2, thereby rinsing the surface of the blade 2 to remove dust or debris adhering to the surface of the blade 2. Therefore, cleaning of multiple blades 2 can be achieved without disassembling them. After cleaning, the adjusting rod 6 is moved to adjust the position of the movable rod 5, so that the inner tube 4 moves under the action of the movable rod 5 to a position where the through hole 41 and the spray hole 11 are misaligned. At this time, the inner tube 4 seals the spray hole 11, preventing the cleaning liquid in the inner tube 4 from passing through the through hole 41 and entering the spray hole 11. At the same time, it prevents material or dust from entering the inner tube 4 and causing blockage during the material conveying process of the blades 2. The self-cleaning spiral blade 2 for the screw conveyor provided in this embodiment can clean the blades 2 without disassembly, which is convenient to use and can prevent the inner tube 4 from being blocked, affecting the spraying of cleaning liquid from the spray hole 11, thus ensuring high reliability.

[0025] like Figure 2 and Figure 3 As shown, the mounting base 3 is provided with a bearing 32, which cooperates with the spindle 1. The bearing 32 on the mounting base 3 cooperates with the spindle 1 to achieve a rotatable connection between the spindle 1 and the mounting base 3, and reduces the friction between the spindle 1 and the mounting base 3, thereby improving the stability of the spindle 1 during rotation.

[0026] like Figure 3 As shown, a limiting block 12 is provided on the inner peripheral wall of the main shaft 1. The length direction of the limiting block 12 is consistent with the length direction of the main shaft 1. The inner tube 4 is provided with a limiting groove 42 that cooperates with the limiting block 12. The cooperation between the limiting block 12 and the limiting groove 42 enables the inner tube 4 to rotate synchronously with the main shaft 1 when the main shaft 1 rotates. This ensures that when the inner tube 4 moves along the direction of the main shaft 1, the through hole 41 can be aligned with the corresponding water spray hole 11. Furthermore, when the inner tube 4 moves along the axial direction of the main shaft 1, the limiting block 12 slides within the limiting groove 42, which serves as a guide and prevents the inner tube 4 from deviating from the preset direction.

[0027] Please refer to Figure 1 and Figure 2The water spray holes 11 are arranged in pairs facing each other, and the two opposing water spray holes 11 are respectively located on opposite sides of the blade 2. The water spray holes 11 are arranged in pairs facing each other on the main shaft 1, and the through hole 41 communicates with the two opposing water spray holes 11, so that the two opposing water spray holes 11 can spray cleaning liquid onto both sides of the blade 2 at the same time, ensuring that both sides of the blade 2 can be cleaned, reducing dead corners and improving the self-cleaning ability of the self-cleaning spiral blade 2 of the screw conveyor.

[0028] Please combine Figure 2 and Figure 3 The mounting base 3 has a receiving cavity 33 communicating with the water inlet pipe 31, and the portion of the inner tube 4 located within the receiving cavity 33 is provided with a water inlet 44. The cleaning fluid injected from the water inlet pipe 31 first enters the receiving cavity 33, and then passes through the water inlet 44 on the inner tube 4 to enter the inner tube 4. The inner tube 4 is provided with multiple water inlets 44 spaced apart along its circumference, ensuring that the cleaning fluid in the receiving cavity 33 can be stably input into the inner tube 4 even when the inner tube 4 is rotated relative to the mounting base 3 at any angle.

[0029] In this embodiment, two sealing rings 34 are spaced apart on the mounting base 3, and the two sealing rings 34 are respectively located on opposite sides of the receiving cavity 33. By providing two sealing rings 34 on both sides of the receiving cavity 33, the sealing performance of the mounting base 3 is improved, preventing leakage of cleaning fluid in the receiving cavity 33.

[0030] like Figure 3 and Figure 4 As shown, one end of the movable rod 5 is provided with a rotatable connecting seat 52, and the inner tube 4 is provided with a connecting pin 43 that cooperates with the connecting seat 52. The movable rod 5 and the inner tube 4 are rotatably connected through the cooperation of the connecting seat 52 and the connecting pin 43, so that the inner tube 4 remains connected to the movable rod 5 when it rotates with the main shaft 1, preventing the inner tube 4 from disengaging from the movable rod 5 during rotation, and ensuring the structural stability of the self-cleaning spiral blade 2 of the screw conveyor.

[0031] Please combine Figure 1 and Figure 4 The mounting base 3 is provided with a guide groove 35, the length direction of which is consistent with the moving direction of the adjusting rod 6. The adjusting rod 6 is provided with a guide rod 62 that cooperates with the guide groove 35. The guide rod 62 on the adjusting rod 6 cooperates with the guide groove 35 on the mounting base 3 to guide the adjusting rod 6 to move on the mounting base 3, preventing the adjusting rod 6 from deviating from the preset direction when moving, and improving the stability of the cooperation between the adjusting rod 6 and the mounting base 3.

[0032] In detail, the guide rod 62 has a threaded portion and a locking nut 63 that mates with the threaded portion is provided on the guide rod 62. The locking nut 63 abuts against the mounting base 3. After operating the adjusting rod 6 to move the movable rod 5 to a position where the through hole 41 is connected to or misaligned with the water spray hole 11, tightening the locking nut 63 so that it abuts against the mounting base 3 locks the position of the adjusting rod 6. This prevents the adjusting rod 6 from moving unexpectedly during the self-cleaning process of the screw conveyor using the self-cleaning screw blade 2 or during material conveying. When it is necessary to operate the adjusting rod 6, simply loosening the locking nut 63 releases the lock on the adjusting rod 6. The operation is simple and convenient.

[0033] like Figure 1 As shown, the mounting base 3 is also provided with a connecting flange 36, which is located at the end of the mounting base 3 away from the main shaft 1. The connecting flange 36 is used to connect the mounting base 3 to the screw conveyor, so as to install the self-cleaning screw blade 2 of the screw conveyor onto the screw conveyor and to ensure a reliable connection between the self-cleaning screw blade 2 of the screw conveyor and the screw conveyor.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A self-cleaning spiral blade for a screw conveyor, comprising a main shaft and blades disposed on the main shaft, characterized in that: It also includes a mounting base. The main shaft has a hollow structure and is rotatably connected to the mounting base. The main shaft has multiple water spray holes spaced apart and positioned close to the blades. The main shaft contains an inner tube that can move along its axial direction. The inner tube has multiple through holes spaced apart. The mounting base has a water inlet pipe communicating with the inner tube and a movable rod rotatably connected to the inner tube. The movable rod is coaxial with the inner tube and can move along the axial direction of the main shaft. The mounting base also has a movable adjusting rod whose direction of movement is perpendicular to the direction of movement of the movable rod. The adjusting rod has a protrusion, and the length of the protrusion forms an acute angle with both the axial direction of the adjusting rod and the axial direction of the movable rod. The movable rod has a groove that mates with the protrusion. When the adjusting rod moves, the protrusion pushes the movable rod to move, causing the through holes to connect with or be misaligned with the water spray holes.

2. The self-cleaning spiral blade for a screw conveyor as described in claim 1, characterized in that: The mounting base is equipped with a bearing, which cooperates with the main shaft.

3. The self-cleaning spiral blade for a screw conveyor as described in claim 1, characterized in that: The inner peripheral wall of the main shaft is provided with a limiting block, the length direction of the limiting block is consistent with the length direction of the main shaft, and the inner tube is provided with a limiting groove that cooperates with the limiting block.

4. The self-cleaning spiral blade for a screw conveyor as described in claim 1, characterized in that: The spray holes are arranged in pairs facing each other, and the two spray holes arranged in pairs are located on opposite sides of the blade.

5. The self-cleaning spiral blade for a screw conveyor as described in claim 1, characterized in that: The mounting base has a receiving cavity communicating with the water inlet pipe, and the portion of the inner tube located within the receiving cavity is provided with a water inlet.

6. The self-cleaning spiral blade for a screw conveyor as described in claim 5, characterized in that: The mounting base is provided with two sealing rings spaced apart, and the two sealing rings are respectively located on opposite sides of the accommodating cavity.

7. The self-cleaning spiral blade for a screw conveyor as described in claim 1, characterized in that: One end of the movable rod is provided with a rotatable connecting seat, and the inner tube is provided with a connecting pin that cooperates with the connecting seat.

8. The self-cleaning spiral blade for a screw conveyor as described in claim 1, characterized in that: The mounting base is provided with a guide groove, the length direction of which is consistent with the moving direction of the adjusting rod, and the adjusting rod is provided with a guide rod that cooperates with the guide groove.

9. A self-cleaning spiral blade for a screw conveyor as described in claim 8, characterized in that: The guide rod has a threaded portion and a locking nut that mates with the threaded portion is provided on the guide rod, and the locking nut abuts against the mounting base.

10. A self-cleaning spiral blade for a screw conveyor as described in claim 1, characterized in that: The mounting base is also provided with a connecting flange, which is located at the end of the mounting base away from the spindle.

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