Middle supporting structure of screw conveyor

Abstract

The utility model discloses a middle supporting structure of a spiral conveyer, which is used for connecting two conveying arms, each conveying arm comprises an outer pipe and a spiral mandrel arranged in the outer pipe, the middle supporting structure comprises a sleeve connected between the two outer pipes and a bearing seat arranged in the sleeve, the bearing seat is divided into an upper cover and a lower cover, and the upper cover is connected with the lower cover. The upper cover and the lower cover are matched with each other to form a bearing cavity inside, a split bearing is arranged in the bearing cavity, a corner hanging shaft is arranged in the split bearing, and the two ends of the corner hanging shaft are connected with the spiral mandrels on the two sides respectively. The two spiral mandrels are connected together through the angle hanging shaft, and the requirement for long conveying is met. The split bearing is arranged between the bearing cavity and the angle hanging shaft, so that the friction resistance can be reduced, the angle hanging shaft is smoother in the rotating process, the transmission efficiency is improved, the energy consumption is reduced, and the split bearing is convenient to install. The bearing seat is divided into the upper cover and the lower cover which are detachably connected, so that the bearing seat is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the field of screw conveyors, and particularly relates to an intermediate support structure of a screw conveyor. Background Art

[0002] Screw conveyors are often used to convey powdery materials. The conveying arm of a screw conveyor includes an outer tube and a screw core shaft provided with screw blades inside the outer tube. Through the rotation of the screw core shaft, the conveying of materials is realized. When a longer conveying line is required, multiple screw core shafts are usually connected together. Welding is often used. Welding connection does not require additional connecting parts or intermediate parts. Only two screw core shafts need to be directly welded together. The structure is relatively simple, reducing the number and complexity of parts. At the same time, the welding process can usually be carried out in a factory or on-site, without complex processing equipment or technology, and the processing process is relatively convenient and fast.

[0003] However, this method has the following disadvantages: 1. During the welding process, due to the influence of high temperature and welding stress, it is easy to cause the center position of the screw core shaft to shift, thereby affecting the overall vibration characteristics and operation stability of the equipment. 2. During the welding process, the adjacent area of the joint of the two screw core shafts will become brittle due to overheating, which will reduce the overall strength and toughness of the screw core shaft and increase the risk of fracture. 3. During the welding process, defects such as pores, slag inclusions, and lack of fusion will appear. These defects may become the starting points of cracks, thereby affecting the service life of the screw core shaft. Summary of the Utility Model

[0004] Based on this, in view of the above technical problems, the utility model provides an intermediate support structure of a screw conveyor.

[0005] The purpose of the utility model can be achieved by the following technical solutions:

[0006] An intermediate support structure of a screw conveyor is used to connect two conveying arms. Each conveying arm includes an outer tube and a screw core shaft provided inside the outer tube. The intermediate support structure includes a sleeve connected between the two outer tubes and a bearing seat provided inside the sleeve. The bearing seat includes a detachable upper cover and a lower cover. The upper cover and the lower cover cooperate with each other to form a bearing cavity inside. A split bearing is provided inside the bearing cavity, and a hanging angle shaft is provided inside the split bearing. The two ends of the hanging angle shaft are respectively connected to the screw core shafts on both sides.

[0007] With the above technical solution, the two spiral shafts are connected together by the hanging angle shaft to meet the requirement of a longer conveying distance. By arranging a split bearing between the bearing cavity and the hanging angle shaft, the friction resistance is reduced, making the rotation of the hanging angle shaft smoother, improving the transmission efficiency, thus reducing the energy consumption. Moreover, the use of the split bearing facilitates installation. By dividing the bearing housing into an upper cover and a lower cover, which are detachably connected, it is convenient for disassembly and assembly.

[0008] In a specific embodiment of the present utility model: both the upper cover and the lower cover include a semi-circular portion surrounding the split bearing and a vertical portion provided on the outer wall of the semi-circular portion.

[0009] In a specific embodiment of the present utility model: windows for installing the bearing housing are respectively provided on the upper and lower sides of the sleeve, and the two vertical portions of the bearing housing are respectively fixed in the corresponding windows through mounting plates.

[0010] In a specific embodiment of the present utility model: the hanging angle shaft is divided into a transmission portion and connecting portions provided at both ends of the transmission portion.

[0011] In a specific embodiment of the present utility model: the transmission portion and the two connecting portions are of an integrally formed structure. The use of the integrally formed structure avoids the possible gaps or looseness generated when multiple components are connected, making the overall structure more compact and firm. It reduces the steps and complexity in the installation process and lowers the requirements for installation techniques.

[0012] In a specific embodiment of the present utility model: sealing rings are provided between the end plates on both sides of the bearing cavity and the hanging angle shaft. With this structure, it can play a role in sealing and dust prevention.

[0013] In summary, in the present utility model, the two spiral shafts are connected together by the hanging angle shaft to meet the requirement of a longer conveying line. By arranging a split bearing between the bearing cavity and the hanging angle shaft, the friction resistance is reduced, making the rotation of the hanging angle shaft smoother, improving the transmission efficiency, thus reducing the energy consumption. Moreover, the use of the split bearing facilitates installation. By dividing the bearing housing into an upper cover and a lower cover, which are detachably connected, it is convenient for disassembly and assembly. The transmission portion of the hanging angle shaft and the connecting portions provided at both ends of the transmission portion are of an integrally formed structure, avoiding the possible gaps or looseness generated when multiple components are connected, making the overall structure more compact and reducing the complexity in the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described below with reference to the accompanying drawings.

[0015] Figure 1 is a schematic structural view of an intermediate support structure of a screw conveyor of the present utility model;

[0016] Figure 2It is a schematic structural view of another perspective of the intermediate support structure of the present utility model. Detailed implementation mode

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0018] Please refer to Figure 1 and Figure 2 As shown, the present utility model is an intermediate support structure of a screw conveyor, which is used to connect two conveying arms 9 together. Both conveying arms include an outer tube 8 and a screw core shaft 7 arranged inside the outer tube. The intermediate support structure includes a sleeve 10 connected between the two outer tubes 8 and a bearing seat 11 arranged inside the sleeve 10. Among them, the bearing seat 11 is divided into an upper cover 111 and a lower cover 112, and they are detachably connected. The upper cover 111 and the lower cover 112 cooperate with each other to form a bearing cavity 12 inside. A split bearing 13 is arranged in the bearing cavity 12. A hanging angle shaft 14 is arranged in the split bearing 13. Both ends of the hanging angle shaft 14 are respectively connected to the screw core shafts 7 on both sides.

[0019] In this embodiment, both the upper cover 111 and the lower cover 112 include a semi-circular portion 113 surrounding the split bearing and a vertical portion 114 arranged on the outer wall of the semi-circular portion. During assembly, the upper cover 111 and the lower cover 112 are connected together by bolts.

[0020] Windows 101 for installing the bearing seat are respectively arranged on the upper and lower sides of the sleeve 10. The two vertical portions 114 of the bearing seat 11 are respectively fixed in the corresponding windows 101 through mounting plates 16.

[0021] In this embodiment, the hanging angle shaft 14 is divided into a transmission portion 141 and connecting portions 142 arranged at both ends of the transmission portion for connecting the screw core shafts 7.

[0022] In this embodiment, the transmission portion 141 and the two connecting portions 142 are of an integrally formed structure. By adopting the integrally formed structure, the gaps or looseness that may occur when multiple components are connected are avoided, making the overall structure more compact and firm. At the same time, the steps and complexity in the installation process are reduced, and the requirements for installation technology are lowered.

[0023] In this embodiment, sealing rings 16 are arranged between the end plates on both sides of the bearing cavity 12 and the hanging angle shaft 14. By adopting this structure, the functions of sealing and dust prevention can be achieved.

[0024] In summary, in the present utility model, two spiral mandrels are connected together by a hanging angle shaft to meet the requirements of a longer conveyor line. When installation or maintenance is required, it can be conveniently disassembled and reassembled, reducing maintenance costs and downtime. By providing a split bearing between the bearing cavity and the hanging angle shaft, the frictional resistance can be reduced, making the hanging angle shaft rotate more smoothly during operation, improving the transmission efficiency, and thus reducing energy consumption. By dividing the bearing seat into an upper cover and a lower cover, which are detachably connected, disassembly and assembly can be facilitated. The transmission part and the two connecting parts of the hanging angle shaft are of an integrally formed structure, avoiding possible gaps or looseness that may occur when multiple components are connected, making the overall structure more compact and reducing the complexity during the installation process.

[0025] One embodiment of the present utility model has been described in detail above, but the content described is only the preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. Any equivalent changes and improvements made within the scope of the application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. An intermediate support structure for a screw conveyor, which is used to connect two conveying arms. Each of the conveying arms includes an outer tube and a screw core shaft arranged inside the outer tube, and is characterized in that, The middle support structure includes a sleeve connected between two outer tubes and a bearing seat arranged in the sleeve. The bearing seat includes a detachable upper cover and a lower cover. The upper cover and the lower cover cooperate with each other to form a bearing cavity inside. A split bearing is arranged in the bearing cavity, and a hanging angle shaft is arranged in the split bearing. The two ends of the hanging angle shaft are respectively connected to the spiral mandrels on both sides.

2. The intermediate support structure of the screw conveyor according to claim 1, characterized in that Both the upper cover and the lower cover include a semi-circular ring portion surrounding the split bearing and a vertical portion arranged on the outer wall of the semi-circular ring portion.

3. The intermediate support structure of the screw conveyor according to claim 2, characterized in that, Windows for installing the bearing seat are respectively arranged on the upper and lower sides of the sleeve, and the two vertical portions of the bearing seat are respectively fixed in the corresponding windows through mounting plates.

4. The intermediate support structure of the screw conveyor according to claim 1, characterized in that, The hanging angle shaft is divided into a transmission portion and connecting portions arranged at both ends of the transmission portion.

5. The intermediate support structure of the screw conveyor according to claim 4, characterized in that, The transmission portion and the two connecting portions are of an integrally formed structure.

6. The intermediate support structure of the screw conveyor according to claim 1, characterized in that Sealing rings are arranged between the end plates on both sides of the bearing cavity and the hanging angle shaft.

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