Anti-bending hollow shaft

Abstract

The utility model belongs to the technical field of stirring shafts, and discloses an anti-bending hollow shaft which comprises a metal rod, a plurality of first reinforcing rings are installed in the metal rod, blades are installed at the bottom of the metal rod, a plurality of second reinforcing rings are arranged on the periphery of the metal rod, and the second reinforcing rings abut against the periphery of the metal rod. A plurality of first threaded holes are formed in the periphery of the second reinforcing ring, a plurality of first bolts are in threaded connection with the periphery of the second reinforcing ring, a fixing ring is welded to the periphery of the bottom of the metal rod, a connecting block and a plugging ring are arranged at the bottom of the fixing ring, the blades are arranged in the connecting block, and a plurality of second bolts are installed on the bottom face of the plugging ring. The fixing ring, the connecting block and the plugging ring are tightly installed through the second bolt, so that the blades are installed, the connecting strength between the blades and the metal rod is improved, and the problem that the metal rod cannot be normally used due to the fact that the axial force borne by the blades is too large, and the metal rod and the surfaces, corresponding to the blades, of the metal rod are prone to deformation is solved.

Description

Technical Field

[0001] The present application relates to the technical field of agitator shafts, and more specifically, to a bending-resistant hollow shaft. Background Art

[0002] Stirring is a very common process step in industrial production. Various types of stirring equipment are often needed in factories and laboratories, and even in our daily lives. The stirring shaft, as an indispensable component in the reactor, has a key influence on the stirring effect. At present, in order to reduce the weight of the stirring shaft, the stirring shaft is often designed to be hollow. In order to ensure its strength and service life, hard metal is often used to make the stirring shaft.

[0003] After searching, a hollow stirring shaft disclosed by publication number CN211562650U is found, including a stirring shaft body, a fixing part fixed to the top end of the stirring shaft body and a paddle arranged at the lower end of the stirring shaft, the stirring shaft body including a hollow hard metal rod; the top end of the hard metal rod is provided with an external thread, and the fixing part is provided with an internal thread matching therewith; a plurality of reinforcement rings are also fixed on the inner wall of the hard metal rod, and the spacing between the plurality of reinforcement rings is equal, so as to reduce the weight of the stirring shaft itself while ensuring a high strength, thereby improving the stirring efficiency and reducing the energy consumption cost.

[0004] However, this application has certain shortcomings. When the hollow shaft drives the stirring blade to work, when the stirring blade is subjected to excessive axial force, it is easy to cause deformation of the stirring shaft surface corresponding to the stirring blade and the hollow shaft, causing the hollow shaft to be unable to be used normally.

[0005] In order to solve the above problems, the present application provides a bending-resistant hollow shaft. Utility Model Content

[0006] The present application provides a bending-resistant hollow shaft adopting the following technical solution:

[0007] A bending-resistant hollow shaft comprises a metal rod, wherein a plurality of reinforcing rings are installed inside the metal rod, and a paddle is installed at the bottom of the metal rod, a plurality of reinforcing rings are arranged at the outer periphery of the metal rod, and the reinforcing rings are in contact with the outer periphery of the metal rod, a plurality of threaded holes are opened at the outer periphery of the reinforcing rings, and a plurality of bolts are threadedly connected to the outer periphery of the reinforcing rings, a fixing ring is welded to the outer periphery of the bottom of the metal rod, and a connecting block and a sealing ring are arranged at the bottom of the fixing ring, the paddle is arranged inside the connecting block, and a plurality of bolts are installed on the bottom surface of the sealing ring.

[0008] Through the above technical solution, the fixing ring, the connecting block and the sealing ring are tightly installed by two pairs of bolts to install the blades, thereby increasing the connection strength between the blades and the metal rod, and solving the problem that the axial force on the blades is too large, which easily causes deformation of the metal rod and the blades and the corresponding metal rod surface, resulting in the metal rod being unable to be used normally.

[0009] Furthermore, a reserved groove is provided inside the connection block, a mounting block is fixedly connected to the side surface of the blade, and the mounting block is slidably matched with the reserved groove.

[0010] According to the technical solution, the blades can be installed on the side of the connecting block through the reserved grooves and the mounting blocks.

[0011] Furthermore, the blocking ring, the mounting block, the connecting block and the fixing ring are all provided with a second vertical threaded hole, and the second threaded hole is threadedly connected with the second bolt.

[0012] Through the above technical solution, the sealing ring, the mounting block, the connecting block and the fixing ring can be tightly connected by using the second bolt and the second threaded hole.

[0013] Furthermore, a threaded barrel communicating with the second threaded hole is fixedly connected to the top surface of the fixing ring, and the threaded barrel is threadedly connected to the second bolt.

[0014] Through the above technical solution, the threaded barrel can seal the second bolt to prevent the tail end of the second bolt from being exposed.

[0015] Furthermore, the bolts are arranged in four groups, and the four groups of bolts are symmetrically distributed with respect to the cross-sectional diameter of the metal rod.

[0016] Through the above technical solution, the reinforcement ring 2 can be installed by bolt 1.

[0017] Furthermore, a plurality of slots are provided on the top surface of the reinforcing ring 2, and a plurality of clamping blocks are fixedly connected to the bottom surface of the reinforcing ring 2, and the clamping blocks are clamped with the slots.

[0018] Through the above technical solution, the reinforcing ring 2 can be assembled and fixed by means of the clamping groove and the clamping block.

[0019] Furthermore, the inner wall of the second reinforcing ring is integrally formed with an elastic ring, and the elastic ring is made of a rubber ring material.

[0020] Through the above technical solution, the elastic ring can be used to fill the gap between the reinforcing ring 2 and the metal rod, thereby preventing the liquid from stagnating in the gap between the reinforcing ring 2 and the metal rod during stirring, which is beneficial to the stability of the bolt 1.

[0021] In summary, this application includes the following beneficial technical effects:

[0022] The blades are installed by tightly installing the fixing ring, connecting block and sealing ring through two pairs of bolts, which increases the connection strength between the blades and the metal rod and solves the problem that the blades are subjected to excessive axial force, which easily causes deformation of the metal rod and the blades and the corresponding metal rod surface, resulting in the metal rod being unable to be used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of this application;

[0024] Figure 2 This is a schematic diagram of the structure of the reinforcing ring 2 of this application;

[0025] Figure 3 This is a schematic diagram of the reserved slot structure of this application;

[0026] Figure 4 This is a schematic diagram of the sealing ring structure of the present application.

[0027] Description of the numbers in the figure:

[0028] 1. Metal rod; 2. Reinforcement ring 1; 3. Blade; 4. Reinforcement ring 2; 5. Bolt 1; 6. Fixing ring; 7. Connecting block; 8. Sealing ring; 9. Bolt 2; 10. Threaded barrel; 11. Slot; 12. Block; 13. Threaded hole 1; 14. Elastic ring; 15. Reserved slot; 16. Mounting block; 17. Threaded hole 2. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] Example:

[0033] The present application embodiment discloses a bending-resistant hollow shaft, please refer to Figure 1 and Figure 4 , including a metal rod 1, a plurality of reinforcing rings 2 are installed inside the metal rod 1, and a blade 3 is installed at the bottom of the metal rod 1, a plurality of reinforcing rings 4 are arranged on the outer periphery of the metal rod 1, and the reinforcing rings 4 are in conflict with the outer periphery of the metal rod 1, a plurality of threaded holes 13 are opened on the outer periphery of the reinforcing rings 4, and a plurality of bolts 5 are threadedly connected to the outer periphery of the reinforcing rings 4, a fixing ring 6 is welded to the outer periphery of the bottom of the metal rod 1, and a connecting block 7 and a sealing ring 8 are arranged at the bottom of the fixing ring 6, the blade 3 is arranged inside the connecting block 7, and a plurality of bolts 9 are installed on the bottom surface of the sealing ring 8.

[0034] See also Figure 1 and Figure 2 Four groups of bolts 5 are provided, and the four groups of bolts 5 are symmetrically distributed with the cross-sectional diameter of the metal rod 1. The reinforcing ring 2 4 can be installed through the bolts 5. The top surface of the reinforcing ring 2 4 is provided with a plurality of slots 11, and the bottom surface of the reinforcing ring 2 4 is fixedly connected with a plurality of blocks 12, and the blocks 12 are engaged with the slots 11. The reinforcing ring 2 4 can be assembled and fixed through the slots 11 and the blocks 12. The inner wall of the reinforcing ring 2 4 is integrally formed with an elastic ring 14, and the elastic ring 14 is made of a rubber ring. The elastic ring 14 can be used to fill the gap between the reinforcing ring 2 4 and the metal rod 1, thereby avoiding stagnation of liquid in the gap between the reinforcing ring 2 4 and the metal rod 1 during stirring, which is beneficial to the stability of the bolts 5.

[0035] See also Figure 1 and Figure 3 A reserved groove 15 is provided inside the connecting block 7, a mounting block 16 is fixedly connected to the side of the blade 3, and the mounting block 16 is slidably matched with the reserved groove 15. The blade 3 can be installed on the side of the connecting block 7 through the reserved groove 15 and the mounting block 16. A vertical threaded hole 17 is provided on the sealing ring 8, the mounting block 16, the connecting block 7 and the fixing ring 6, and the threaded hole 17 is threadedly connected with the bolt 9. The sealing ring 8, the mounting block 16, the connecting block 7 and the fixing ring 6 can be tightly connected by the bolt 9 and the threaded hole 17;

[0036] The top surface of the fixing ring 6 is fixedly connected with a threaded barrel 10 which is in communication with the threaded hole 17 , and the threaded barrel 10 is threadedly connected with the bolt 9 , so that the threaded barrel 10 can seal the bolt 9 and prevent the tail end of the bolt 9 from being exposed.

[0037] The implementation principle of this embodiment is: the fixing ring 6, the connecting block 7 and the sealing ring 8 are tightly installed by bolts 2 9 to install the blade 3, thereby increasing the connection strength between the blade 3 and the metal rod 1, and solving the problem that the blade 3 is subjected to excessive axial force, which easily causes deformation of the metal rod 1 and the surfaces of the metal rod 1 at the corresponding parts of the blade 3, resulting in the metal rod 1 being unable to be used normally. The reinforcing ring 2 4 can strengthen the outside of the metal rod 1, making the outer periphery of the metal rod 1 less likely to bend.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A bending-resistant hollow shaft, comprising a metal rod (1), a plurality of reinforcing rings (2) are installed inside the metal rod (1), and a blade (3) is installed at the bottom of the metal rod (1), characterized in that: The outer periphery of the metal rod (1) is provided with a plurality of reinforcing rings (4), and the reinforcing rings (4) are in contact with the outer periphery of the metal rod (1); the outer periphery of the reinforcing ring (4) is provided with a plurality of threaded holes (13), and the outer periphery of the reinforcing ring (4) is threadedly connected with a plurality of bolts (5); a fixing ring (6) is welded to the outer periphery of the bottom of the metal rod (1), and a connecting block (7) and a sealing ring (8) are provided at the bottom of the fixing ring (6); the blade (3) is arranged inside the connecting block (7), and a plurality of bolts (9) are installed on the bottom surface of the sealing ring (8).

2. The bending-resistant hollow shaft according to claim 1, characterized in that: A reserved groove (15) is provided inside the connection block (7), and a mounting block (16) is fixedly connected to the side of the blade (3), and the mounting block (16) is slidably matched with the reserved groove (15).

3. The bending-resistant hollow shaft according to claim 2, characterized in that: The sealing ring (8), the mounting block (16), the connecting block (7) and the fixing ring (6) are all provided with a second vertical threaded hole (17), and the second threaded hole (17) and the second bolt (9) are threadedly connected.

4. The bending-resistant hollow shaft according to claim 3, characterized in that: A threaded barrel (10) communicating with the second threaded hole (17) is fixedly connected to the top surface of the fixing ring (6), and the threaded barrel (10) is threadedly connected to the second bolt (9).

5. The bending-resistant hollow shaft according to claim 1, characterized in that: The bolts (5) are arranged in four groups, and the four groups of bolts (5) are symmetrically distributed with respect to the cross-sectional diameter of the metal rod (1).

6. The bending-resistant hollow shaft according to claim 1, characterized in that: The top surface of the reinforcing ring 2 (4) is provided with a plurality of clamping grooves (11), and the bottom surface of the reinforcing ring 2 (4) is fixedly connected with a plurality of clamping blocks (12), and the clamping blocks (12) and the clamping grooves (11) are clamped.

7. The bending-resistant hollow shaft according to claim 1, characterized in that: The inner wall of the second reinforcing ring (4) is integrally formed with an elastic ring (14), and the elastic ring (14) is made of a rubber ring material.

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