Single-screw auger conveyor

Abstract

The utility model discloses a single-screw auger conveyor which comprises a material conveying pipeline, a rotating shaft is rotationally connected in the material conveying pipeline, a shaft sleeve is sleeved on the rotating shaft, auger blades are fixedly connected with the outer wall of the shaft sleeve, the single-screw auger conveyor further comprises two clamping sleeves, and the two clamping sleeves are sleeved on the rotating shaft and located at two ends of the shaft sleeve respectively. The clamping sleeve comprises an internal thread sleeve, a moving plate, wedge-shaped blocks and an external thread sleeve, the internal thread sleeve is integrally formed at the end of the shaft sleeve, a wedge-shaped surface is arranged on the inner wall of the internal thread sleeve, the moving plate is rotationally connected with the external thread sleeve, the moving plate is located in the external thread sleeve, the rotating shaft is sleeved with the moving plate and the external thread sleeve, and the wedge-shaped blocks are slidably connected to the end face of the moving plate; the wedge-shaped block slides in the radial direction of the wedge-shaped block, the wedge-shaped block and the inner threaded sleeve are located in the outer threaded sleeve, and the inner threaded sleeve is in threaded connection with the outer threaded sleeve. The shaft sleeve and the rotating shaft can be assembled and disassembled through the clamping sleeve, the whole auger screw does not need to be replaced when the blades are replaced, and the working intensity is reduced.

Description

Technical Field

[0001] This utility model relates to a screw feeding mechanism, and more particularly to a single screw auger conveyor. Background Technology

[0002] Screw conveyors, also known as screw conveyors, are widely used in various industries. They are suitable for horizontal or inclined conveying of powdery, granular, and small lump materials with a material temperature of less than 200℃. Screw conveyors are not suitable for conveying easily perishable, sticky, or easily agglomerated materials.

[0003] During operation, the rotating helical blades push the material forward, thus conveying it via a screw conveyor. The material's own weight and the frictional resistance of the conveyor casing prevent it from rotating with the blades. The helical blades welded to the rotating shaft of the screw conveyor have various blade shapes, including solid, ribbon, and paddle types, depending on the material being conveyed. At the end of the screw shaft in the direction of material movement, there is a thrust bearing to counteract the axial force exerted on the screw by the material. For longer conveyors, intermediate hanger bearings should be added.

[0004] Because the helical blades are welded to the rotating shaft, the rotating shaft must be replaced along with the helical blades when the helical blades are replaced. The rotating shaft is solid and heavy, making the replacement troublesome, laborious, and demanding. Utility Model Content

[0005] The purpose of this invention is to provide a single-screw auger conveyor, which has the advantage of reducing the weight that needs to be borne when replacing auger blades, thus saving more effort.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A single-screw auger conveyor includes a conveying pipe with a rotating shaft inside. The end of the rotating shaft is rotatably connected to the end wall of the conveying pipe. It also includes a bushing fitted onto the rotating shaft, with auger blades fixedly connected to the outer wall of the bushing. Two clamping sleeves are also included, fitted onto the rotating shaft and located at opposite ends of the bushing. Each clamping sleeve comprises an internal threaded sleeve, a movable plate, a wedge block, and an external threaded sleeve. The internal threaded sleeve is integrally formed at the end of the bushing, and its outer wall is integrally formed with external threads. The outer diameter of the internal threaded sleeve is smaller than the outer diameter of the bushing, thereby forming a platform between the outer wall of the internal threaded sleeve and the end face of the bushing. The inner wall of the internal threaded sleeve is provided with a wedge-shaped surface. The movable plate is sleeved on the rotating shaft and is slidably connected to the rotating shaft. One end face of the movable plate has multiple sliding grooves along its radial direction, which surround the center of the movable plate. Each sliding groove is embedded with a wedge-shaped block. The wedge-shaped block is slidably connected to the movable plate. The inclined surface of the wedge-shaped block matches the wedge-shaped surface inside the internal threaded sleeve. One section of the inner wall of the external threaded sleeve is integrally formed with an internal thread. The external threaded sleeve is sleeved on the rotating shaft. The movable plate and the wedge-shaped block are located inside the external threaded sleeve. The movable plate and the internal threaded sleeve are rotatably connected to each other. The internal threaded sleeve is located inside the external threaded sleeve, and the two are threadedly connected.

[0008] Using the above technical solution, two ferrules and a bushing are fitted onto the rotating shaft, with the bushing positioned between the two ferrules. The two external threaded sleeves are connected to the internal threads. Tightening the two external threaded sleeves causes them to rotate relative to the connecting plate. Simultaneously, the external threaded sleeves move relative to the rotating shaft, approaching the bushing. The external threaded sleeves drive a moving plate to move on the rotating shaft. The moving plate causes its upper wedge-shaped block to move inwards towards the internal threaded sleeve. The outer inclined surface of the wedge-shaped block contacts the inner wedge-shaped surface of the internal threaded sleeve. Simultaneously, the inner wall of the internal threaded sleeve exerts a force on the moving wedge-shaped block, causing it to move relative to the moving plate. This causes the wedge-shaped blocks on the moving plate to come together and clamp the rotating shaft, thereby fixing the ferrules and bushing on the shaft. When replacing the auger blades on the shaft, twist the external threaded sleeves at both ends of the bushing in opposite directions. The external threaded sleeves move away from the shaft, causing the moving plate to return. The moving plate then causes the wedge block to move away from the inside of the internal threaded sleeve. This reduces the force exerted by the inner wall of the internal threaded sleeve on the wedge block, and consequently, the force exerted by the wedge block on the shaft. Once the external threaded sleeve and internal threaded sleeve are separated, remove one of the sleeves from the shaft. Then, remove the shaft from the shaft and replace it with a new shaft and blades. This process divides the entire auger screw into two parts: the shaft and the shaft. The auger blades are welded to the shaft. When replacing the blades, only the shaft needs to be replaced. The shaft is lighter than the entire screw, making replacement easier and reducing workload.

[0009] Preferably, the outer diameters of the external threaded sleeve and the internal threaded sleeve are the same.

[0010] By adopting the above technical solution, when the ferrule and the bushing are connected, a step is prevented from forming between them, which would affect the material conveying.

[0011] Preferably, the outer wall of the external threaded sleeve is provided with friction texture.

[0012] The above technical solution facilitates the rotation of the external threaded sleeve.

[0013] Preferably, a rubber pad is attached to the surface of the wedge block.

[0014] By adopting the above technical solution, the friction between the wedge block and the rotating shaft is increased, making the bushing more secure.

[0015] Preferably, a feed hopper is fixedly connected to the outside of the conveying pipe.

[0016] Using the above technical solution, the material is first poured into the feeding hopper, and then the material falls from the feeding hopper into the conveying pipe, which facilitates feeding. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of the embodiment;

[0018] Figure 2 This is a schematic diagram of the internal structure of the material conveying pipeline;

[0019] Figure 3 This is a schematic diagram of the screw structure;

[0020] Figure 4 This is a schematic diagram of the cross section along direction AA in Figure 3;

[0021] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.

[0022] Reference numerals in the attached drawings: 1. Conveying pipe; 2. Rotating shaft; 3. Bushing; 4. Screwdriver blade; 5. Internal threaded sleeve; 6. Moving plate; 7. Wedge block; 8. External threaded sleeve; 9. Wedge surface; 10. Feed hopper. Detailed Implementation

[0023] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model should be considered within the protection scope of this utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

[0024] See Figures 1 to 5A single-screw auger conveyor includes a conveying pipe 1, with openings at one end and one side, both of which are bolted to cover plates. A feed hopper 10 is fixedly connected to the cover plate at the side opening of the conveying pipe 1, located near the end of the conveying pipe 1. A discharge port is located below the other end of the conveying pipe 1. A rotating shaft 2 is installed inside the conveying pipe 1, with its end rotatably connected to the end wall of the conveying pipe 1. The conveying pipe also includes a bushing 3, which is fitted onto the rotating shaft 2, with auger blades 4 fixedly connected to its outer wall. It also includes ferrules, of which there are two, fitted onto the rotating shaft 2 and located at both ends of the bushing 3. Each ferrule includes an internal threaded sleeve 5, a movable plate 6, a wedge block 7, and an external threaded sleeve 8. The internal threaded sleeve 5 is integrally formed at the end of the bushing 3, and its outer wall is integrally formed with external threads. The outer diameter of the internal threaded sleeve 5 is smaller than the outer diameter of the bushing 3, thus forming a step between the outer wall of the internal threaded sleeve 5 and the end face of the bushing 3. The inner wall of the internal threaded sleeve 5 is provided with a wedge surface 9. The movable plate 6 is fitted onto the rotating shaft 2 and is slidably connected to the rotating shaft 2. One end face of the movable plate 6 has multiple grooves along its radial direction, which surround the center of the movable plate 6. Each groove is embedded with a wedge block 7, which is slidably connected to the movable plate 6. The inclined surface of the wedge block 7 matches the wedge surface 9 inside the internal threaded sleeve 5, and a rubber pad is attached to the surface of the wedge block 7. The inner wall of the external threaded sleeve 8 is integrally formed with internal threads, and the outer wall of the external threaded sleeve 8 is provided with friction texture. The external threaded sleeve 8 is fitted on the rotating shaft 2, and the outer diameters of the external threaded sleeve 8 and the internal threaded sleeve 5 are the same. The movable plate 6 and the wedge block 7 are located inside the external threaded sleeve 8. The movable plate 6 and the internal threaded sleeve 5 are rotatably connected to each other. The internal threaded sleeve 5 is located inside the external threaded sleeve 8, and the two are threadedly connected.

[0025] Working principle: Open the cover plate at the side opening of the conveying pipe 1, and put the two ferrules and bushing 3 onto the rotating shaft 2. The bushing 3 is located between the two ferrules, and the two external threaded sleeves 8 are connected to the internal thread. Then, turn the two external threaded sleeves 8 one by one, so that the external threaded sleeves 8 rotate relative to the connecting plate. While rotating, the external threaded sleeves 8 move relative to the rotating shaft 2 and move closer to the bushing 3. The external threaded sleeves 8 drive the moving plate 6 to move on the rotating shaft 2. The moving plate 6 drives the wedge block 7 on its upper part to move into the internal threaded sleeve 5. The outer inclined surface of the wedge block 7 contacts the wedge surface 9 inside the internal threaded sleeve 5. At the same time, the inner wall of the internal threaded sleeve 5 exerts a force on the moving wedge block 7, so that the wedge block 7 moves relative to the moving plate 6, thereby making the wedge blocks 7 on the moving plate 6 move closer together and clamp the rotating shaft 2, thus fixing the ferrules and bushing 3 on the rotating shaft 2. When replacing the auger blade 4, twist the external threaded sleeves 8 at both ends of the bushing 3 in opposite directions. The external threaded sleeves 8 move away from the bushing 3, causing the moving plate 6 to return. The moving plate 6 then causes the wedge block 7 to move away from the inside of the internal threaded sleeve 5. This reduces the force exerted by the inner wall of the internal threaded sleeve 5 on the wedge block 7, and consequently reduces the force exerted by the wedge block 7 on the rotating shaft 2. Once the external threaded sleeve 8 separates from the internal threaded sleeve 5, remove one of the retaining sleeves from the rotating shaft 2. Then, remove the bushing 3 from the rotating shaft 2 and replace it with a new bushing 3 and blade. The entire auger screw is divided into two parts: the bushing 3 and the rotating shaft 2. The auger blade 4 is welded to the bushing 3. When replacing the blade, only the bushing 3 needs to be replaced. The bushing 3 is lighter than the entire screw, making replacement easier and reducing workload.

Claims

1. A single-screw auger conveyor, comprising a conveying pipe (1), a rotating shaft (2) disposed within the conveying pipe (1), the end of the rotating shaft (2) being rotatably connected to the end wall of the conveying pipe (1), characterized in that, It also includes a bushing (3), which is fitted onto the rotating shaft (2). The outer wall of the bushing (3) is fixedly connected with an auger blade (4). It also includes two ferrules, which are fitted onto the rotating shaft (2) and located at both ends of the bushing (3). Each ferrule includes an internal threaded sleeve (5), a moving plate (6), a wedge block (7), and an external threaded sleeve (8). The internal threaded sleeve (5) is integrally formed at the end of the bushing (3). The outer wall of the internal threaded sleeve (5) is integrally formed with an external thread. The outer diameter of the internal threaded sleeve (5) is smaller than the outer diameter of the bushing (3), thereby forming a step between the outer wall of the internal threaded sleeve (5) and the end face of the bushing (3). The inner wall of the internal threaded sleeve (5) is provided with a wedge-shaped surface (9). The moving plate (6) is fitted onto the rotating shaft (2). On the rotating shaft (2), the movable plate (6) is slidably connected to the rotating shaft (2). One end face of the movable plate (6) is provided with multiple sliding grooves along its radial direction. The sliding grooves surround the center of the movable plate (6). Each sliding groove is embedded with a wedge block (7). The wedge block (7) is slidably connected to the movable plate (6). The inclined surface of the wedge block (7) matches the wedge surface (9) inside the inner thread sleeve (5). One section of the inner wall of the outer thread sleeve (8) is integrally formed with an internal thread. The outer thread sleeve (8) is sleeved on the rotating shaft (2). The movable plate (6) and the wedge block (7) are located inside the outer thread sleeve (8). The movable plate (6) and the inner thread sleeve (5) are rotatably connected to each other. The inner thread sleeve (5) is located inside the outer thread sleeve (8). The two are threadedly connected.

2. The single-screw auger conveyor according to claim 1, characterized in that, The outer wall of the external threaded sleeve (8) is provided with friction texture.

3. A single-screw auger conveyor according to claim 1, characterized in that, The outer diameters of the external threaded sleeve (8) and the internal threaded sleeve (5) are the same.

4. A single-screw auger conveyor according to claim 1, characterized in that, A rubber pad is attached to the surface of the wedge block (7).

5. A single-screw auger conveyor according to claim 1, characterized in that, The material conveying pipeline (1) is externally fixedly connected to a feed hopper (10).

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