Connecting structure of shaft and stirrer

Abstract

The utility model discloses a connecting structure of a shaft and a stirrer. The connecting structure comprises a connecting flange, a hollow shaft, a first connecting plate, a second connecting plate and a second solid short shaft, the connecting flange is fixedly arranged at the upper end of the hollow shaft; the second solid short shaft is fixedly connected to the lower end of the hollow shaft and extends downwards by a set length from the lower end of the hollow shaft; the hollow shaft is axially sleeved with a plurality of bushings, the bushings are fixedly connected with the hollow shaft, and each bushing is fixedly connected with a connecting plate; the hollow shaft is sleeved with the lining, the lining and the hollow shaft are fixedly connected in a welding mode, the lining is fixedly connected with the connecting plate, the lining is connected with the stirrer through the connecting plate, and the problem that installation is difficult due to the fact that a flat key is used is avoided; and the whole body can be conveniently adjusted into the barrel body of the stirring kettle from top to bottom to be integrally mounted, and is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of stirring kettles, and particularly relates to a connection structure between a shaft and an agitator. Background Art

[0002] In a broad sense, a stirring kettle is a container with physical or chemical reactions. Through the structural design and parameter configuration of the container, similar to the performance principle of a reaction kettle, functions such as heating, evaporation, cooling, and mixing at low and high speeds required by the process are achieved. The stirring function of the stirring kettle is mainly driven by an external motor through a speed reducer to drive the stirring shaft, and then drive the agitator fixed on the stirring shaft to rotate, so as to realize the stirring and mixing of the materials in the cylinder. The structure adopted by traditional stirring kettles often sets a flat key at the connection between the agitator and the stirring shaft for transmission. Since the stirring shaft is vertically arranged and the flat key is also arranged parallel to the stirring shaft, during the installation process, problems such as the flat key slipping, falling off, or poor positioning are likely to occur, which brings inconvenience to its assembly. Summary of the Invention

[0003] The purpose of the utility model is to provide a connection structure between a shaft and an agitator, aiming to solve the technical problems existing in the background art.

[0004] To solve the above technical problems, the purpose of the utility model is realized as follows:

[0005] A connection structure between a shaft and an agitator includes a connecting flange, a hollow shaft, a first connecting plate, a second connecting plate, and a second solid short shaft. The connecting flange is fixedly arranged at the upper end of the hollow shaft. The second solid short shaft is fixedly connected to the lower end of the hollow shaft and extends downward from the lower end of the hollow shaft by a set length. A plurality of bushings are axially sleeved on the hollow shaft, and the bushings are fixedly connected to the hollow shaft. Each bushing is fixedly connected with a connecting plate, and the agitator is connected to the connecting plate.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: The second cylindrical pin passes through the hollow shaft from outside to inside along the radial direction of the hollow shaft and then penetrates into the second solid short shaft.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: The second solid short shaft is fixedly welded to the lower end edge of the hollow shaft.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: The second cylindrical pin is limited on the hollow shaft.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: The outer end of the second cylindrical pin is fixedly welded to the hollow shaft.

[0010] On the basis of the above - mentioned solution and as a preferred solution of the above - mentioned solution: The two end edges of the bushing are fixedly welded to the hollow shaft.

[0011] On the basis of the above - mentioned solution and as a preferred solution of the above - mentioned solution: The bushing is provided with exhaust holes.

[0012] On the basis of the above - mentioned solution and as a preferred solution of the above - mentioned solution: It further includes a first solid short shaft, and the first solid short shaft is embedded in the upper section of the hollow shaft and is adjacent to the upper end of the hollow shaft.

[0013] On the basis of the above - mentioned solution and as a preferred solution of the above - mentioned solution: The first solid short shaft is fixedly connected to the hollow shaft.

[0014] On the basis of the above - mentioned solution and as a preferred solution of the above - mentioned solution: The first cylindrical pin passes through the hollow shaft from outside to inside along the radial direction of the hollow shaft and then penetrates into the first solid short shaft.

[0015] The prominent and beneficial technical effects of the present utility model compared with the prior art are as follows: The bushing of the present application is sleeved on the hollow shaft, and the two are fixedly connected by welding. A connecting plate is fixedly connected to the bushing and is connected to the agitator through the connecting plate, avoiding the problem of difficult installation caused by using a flat key, which is more conducive to the overall installation from top to bottom into the cylinder body of the mixing kettle, and is also convenient for disassembly and assembly. In addition, the structure of the hollow shaft reduces the overall weight, and a second solid short shaft and a first solid short shaft are respectively arranged at the lower end and the upper end, increasing the strength at both ends of the hollow shaft, and at the same time facilitating the cooperation with the shaft sleeve and bearing at the bottom of the cylinder body, which is conducive to installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the structural schematic diagram of the first bushing;

[0018] Figure 3 is the structural schematic diagram of the second bushing. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the given embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0020] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0021] In the description of the present application, terms such as "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0022] See Figures 1-3 As shown, the present application discloses a connection structure between a shaft and a stirrer, including a connection flange 1, a hollow shaft 4, a first connection plate 5, a second connection plate 8, and a second solid short shaft 10; wherein, the connection flange 1 is fixedly arranged at the upper end of the hollow shaft 4. Specifically, the middle part of the connection flange 1 has a through hole and is sleeved on the upper end of the hollow shaft 4, and the connection flange 1 is welded and fixed to the hollow shaft 4 by welding. The connection flange 1 is used to connect with the connection flange of the motor or reducer of the stirring kettle to achieve power transmission. The second solid short shaft 10 is fixedly connected to the lower end of the hollow shaft 4 and extends downward from the lower end of the hollow shaft 4 by a set length so as to be assembled with the bushing or bearing at the bottom of the cylinder body of the stirring kettle. Specifically, in order to realize the fixed connection between the second solid short shaft 10 and the hollow shaft, in this embodiment, the second solid short shaft 10 is fixedly connected to the lower end edge 4b of the hollow shaft 4 by welding; of course, in order to further improve the reliability of torque transmission and the connection reliability between the two, in this embodiment, it is preferred that the second cylindrical pin 9 passes through the hollow shaft 4 radially from outside to inside and then penetrates into the second solid short shaft 10, thereby further limiting or positioning the two. Of course, the second cylindrical pin 9 can be arranged before the two are welded, so that positioning can be quickly carried out, improving the positioning accuracy of welding, which is beneficial to subsequent assembly and smooth operation of the equipment; in addition, in order to prevent the second cylindrical pin 9 from coming out during the later operation process, in this embodiment, the second cylindrical pin 9 is limited on the hollow shaft 4, and preferably, the outer end of the second cylindrical pin 9 is fixed by welding to the hollow shaft 4.

[0023] A plurality of bushings are axially sleeved on the hollow shaft 4, such as Figure 1As shown in the figure, it includes at least one first bushing 6 and at least one second bushing 7. Both the first bushing 6 and the second bushing 7 are fixedly connected to the hollow shaft 4. Of course, considering the connection with the agitator (the agitator is not shown in the figure), in this embodiment, it is preferably that a first connecting plate 5 and a second connecting plate 8 are respectively fixedly connected to the first bushing 6 and the second bushing 7, and a first connecting hole 51 and a second connecting hole 81 are respectively provided on the first connecting plate 5 and the second connecting plate 8. Then, by using bolts to pass through the first connecting hole 51, the second connecting hole 81 and the corresponding mounting holes on the agitator, and locking with nuts, the connection between the agitator and the agitator shaft can be realized. In this embodiment, the two end edges of the first bushing 6 and the second bushing 7 are fixedly connected to the hollow shaft by full circumferential welding. Of course, considering the air that will remain in the gap between the first bushing 6, the second bushing 7 and the hollow shaft during the welding process, thus during the welding process and even during the later use process, there is prone to problems of thermal expansion and contraction, resulting in local stress and possible damage to the structural stability. For this reason, in this embodiment, it is preferably that symmetrical exhaust holes are respectively provided on the first bushing 6 and the second bushing 7, such as Figure 2 the first exhaust hole 62 in Figure 3 and the second exhaust hole 72 in Figure 1 . It is preferably that the aperture of the first exhaust hole 62 and the second exhaust hole 72 is 1.1 mm. It should be noted that, as shown in Figure 1 , the second bushing 7 will affect the installation of the second cylindrical pin 9. For this reason, a through hole 71 is provided at the corresponding position of the second bushing 7 so that the second cylindrical pin 9 can pass through and penetrate into the hollow shaft and the second solid short shaft 10. Of course, the outer end of the second cylindrical pin 9 is limited by welding with the second bushing 7. By sleeving the bushing of the present application on the hollow shaft and fixedly connecting the two by welding, and a connecting plate is fixedly connected to the bushing and connected to the agitator through the connecting plate, the problem of difficult installation caused by using a flat key is avoided, which is more conducive to the overall installation from top to bottom into the cylinder body of the stirring kettle, and is also convenient for disassembly and assembly.

[0024] Of course, considering that in order to increase the strength and support of the upper end of the hollow shaft 4, this embodiment further includes a first solid short shaft 2. The first solid short shaft 2 is embedded in the upper section of the hollow shaft 4 and is adjacent to the upper end of the hollow shaft 4. Specifically, the first solid short shaft 2 is fixedly connected to the upper end edge of the hollow shaft 4 by welding. Of course, considering that it is beneficial to position the first solid short shaft 2 to improve its installation accuracy, in this embodiment, it is preferably adopted that the first cylindrical pin 3 passes through the hollow shaft 4 from the outside to the inside along the radial direction of the hollow shaft 4 and then penetrates into the first solid short shaft 2. Similarly, in order to prevent the first cylindrical pin 3 from coming out during the later operation process, in this embodiment, the first cylindrical pin 3 is limited on the hollow shaft 4, and it is preferably adopted to fix the outer end of the first cylindrical pin 3 to the hollow shaft 4 by welding. By setting the structure of the hollow shaft, the overall weight is reduced, and a second solid short shaft and a first solid short shaft are respectively arranged at the lower end and the upper end, increasing the strength at both ends of the hollow shaft and facilitating the cooperation with the shaft sleeve and bearing at the bottom of the cylinder body, which is beneficial to installation.

[0025] The above embodiments are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A connection structure between a shaft and a stirrer, characterized in that: The hollow shaft (4) comprises a connecting flange (1), a hollow shaft (4), a first connecting plate (5), a second connecting plate (8) and a second solid short shaft (10); the connecting flange (1) is fixedly arranged at the upper end of the hollow shaft (4); the second solid short shaft (10) is fixedly connected to the lower end of the hollow shaft (4) and extends downward from the lower end of the hollow shaft (4) to a set length; a plurality of bushings are axially sleeved on the hollow shaft (4), the bushings are fixedly connected to the hollow shaft (4), and each of the bushings is fixedly connected to a connecting plate; and an agitator is connected to the connecting plate.

2. The connection structure between a shaft and an agitator according to claim 1, characterized in that: The second cylindrical pin (9) passes through the hollow shaft (4) from the outside to the inside along the radial direction of the hollow shaft (4) and then enters into the second solid short shaft (10).

3. The connection structure between a shaft and an agitator according to claim 2, characterized in that: The second solid short shaft (10) is fixed to the lower end edge (4b) of the hollow shaft (4) by welding.

4. The connection structure between a shaft and an agitator according to claim 2, characterized in that: The second cylindrical pin (9) is located on the hollow shaft (4).

5. The connection structure between a shaft and an agitator according to claim 4, characterized in that: The outer end of the second cylindrical pin (9) is fixed to the hollow shaft (4) by welding.

6. The connection structure between a shaft and an agitator according to claim 1, characterized in that: The two end edges of the bushing are fixed to the hollow shaft by welding.

7. The connection structure between a shaft and an agitator according to claim 6, characterized in that: The bushing is provided with an exhaust hole.

8. The connection structure between a shaft and an agitator according to claim 1, characterized in that: It also comprises a first solid short shaft (2), wherein the first solid short shaft (2) is embedded in the upper section of the hollow shaft (4) and is adjacent to the upper end of the hollow shaft (4).

9. The connection structure between a shaft and an agitator according to claim 8, characterized in that: The first solid short shaft (2) is fixedly connected to the hollow shaft (4).

10. The connection structure between a shaft and an agitator according to claim 9, characterized in that: The first cylindrical pin (3) passes through the hollow shaft (4) from the outside to the inside along the radial direction of the hollow shaft (4) and then penetrates into the first solid short shaft (2).

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