Fixing device for clamping centrifugal machine impeller

Abstract

The fixing device comprises a wheel body, a fixing shaft is arranged on the inner wall of the wheel body, a debugging shaft is movably installed on the outer wall of the fixing shaft, the outer wall of the debugging shaft is movably connected with a connecting rod, a first linkage shaft is fixedly installed on one side of the debugging shaft, and a second linkage shaft is fixedly installed on the other side of the debugging shaft. A second linkage shaft is fixedly installed on one side of the first linkage shaft, a fixing rod is connected to one end of the connecting rod, and an outer shaft is installed on the outer wall of the fixing rod. The fixing device for clamping the centrifugal machine impeller has the advantages that through precise movement of the debugging shaft on the threads on the outer wall of the fixing shaft, precise control over the connecting rod and the fixing rod is achieved, the whole fixing process is simpler, more convenient and faster, linkage of the connecting rod and the fixing rod is driven by rotation of the debugging shaft, and the fixing effect is better. And the fixing rods can be uniformly and effectively expanded and clamped on the inner wall of the impeller body, so that the impeller is effectively prevented from shaking in the mounting process, and the safety of equipment is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuge impeller fixing equipment, and specifically relates to a fixing device for clamping a centrifuge impeller. Background Technique

[0002] In the utility model patent application with the publication number of CN209228695U, its impeller includes a fixing part and a fan blade part; the fixing part is configured with a fixing through hole, the fixing through hole includes a round hole section and a tapered hole section, the round hole section abuts against the tapered hole section, and the diameter of the tapered hole section gradually decreases from the end connected to the round hole section to the end far away from the round hole section, so as to limit the axial position of the impeller through the tapered hole section; the fixing part is configured with a convex block for limiting the circumferential position of the impeller.

[0003] The advantages are as follows: by sleeving the impeller on the high-speed shaft, and through the cooperation of the buckle and the locking gasket, and under the action of the compression nut, the impeller can be well fixed and clamped, and the impeller can be well locked by the buckle and the locking gasket to prevent the impeller from loosening and ensure the structural stability; it has good practical application value.

[0004] In the prior art including the above patent, when installing the impeller of a large centrifuge, in order to prevent the impeller from shaking inside the centrifuge, a crane or other equipment is needed to fix the impeller for installation. In this way, the installation process is not only complicated but also prone to accidents during installation, resulting in the impeller shaking. Content of the Utility Model

[0005] The purpose of the utility model is to provide a fixing device for clamping a centrifuge impeller to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a fixing device for clamping a centrifuge impeller, including a wheel body, a fixing shaft is arranged on the inner wall of the wheel body, a debugging shaft is movably installed on the outer wall of the fixing shaft, connecting rods are movably connected to the outer wall of the debugging shaft, a first linkage shaft is fixedly installed on one side of the debugging shaft, a second linkage shaft is fixedly installed on one side of the first linkage shaft, one end of the connecting rod is connected to a fixing rod, and an outer shaft is installed on the outer wall of the fixing rod.

[0007] Further, a bottom block is installed at one end of the fixing shaft, a limiting insertion rod is arranged on the inner wall of the bottom block, and a fixing insertion rod is arranged at one end of the limiting insertion rod.

[0008] Further, a front cover is installed at the other end of the fixing shaft, and a fixing flange is movably installed on the outer wall of the front cover.

[0009] Further, the outer wall of the fixed shaft is provided with threads, and the inner wall of the debugging shaft is adapted to the threads on the outer wall of the fixed shaft.

[0010] Further, one end of the connecting rod is movably connected to the outer wall of the debugging shaft, and the other end of the connecting rod is movably connected to the outer wall of the fixed rod.

[0011] Further, connecting rods are movably installed on the outer walls of the first linkage shaft and the second linkage shaft, and the first linkage shaft and the second linkage shaft are fixedly installed on the outer wall of the fixed shaft.

[0012] Further, a cavity is provided at one end of the limiting insertion rod, and the diameter of the fixed insertion rod is adapted to the diameter of the cavity of the limiting insertion rod.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The fixing device for clamping the impeller of the centrifuge is reasonable and has the following advantages:

[0014] Through the precise movement of the debugging shaft on the threads of the outer wall of the fixed shaft, not only the precise control of the connecting rod and the fixed rod is realized, but also the entire fixing process is made more simple and rapid. The debugging shaft is divided into two sections, and the rotation of one section will not drive the other section. This design increases the flexibility of adjustment, allowing users to adjust the expansion degree of the fixed rod according to actual needs to ensure that the impeller is firmly fixed in the centrifuge. In addition, the rotation of the debugging shaft drives the linkage of the connecting rod and the fixed rod, enabling the fixed rod to expand and clamp tightly on the inner wall of the wheel body evenly and effectively, effectively preventing the impeller from shaking during the installation process and ensuring the safety of the equipment.

[0015] After the debugging shaft completes the expansion adjustment of the fixed rod, the effective limit of the debugging shaft is achieved by inserting the limiting insertion rod and fixing it with the fixed insertion rod, preventing its self-rotation in the non-operating state, and thus avoiding the accidental contraction of the fixed rod due to the self-rotation of the debugging shaft. This design not only enhances the stability of the device but also avoids the risk of the impeller loosening or falling off caused by the accidental contraction of the fixed rod, greatly improving the safety and reliability of the equipment during use. At the same time, the cooperative installation of the limiting insertion rod and the fixed insertion rod is simple and rapid, facilitating user operation and maintenance, and further improving the convenience of use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 is a schematic structural diagram of the fixed shaft of the present utility model;

[0018] Figure 3 is a schematic structural diagram of the wheel body of the present utility model;

[0019] Figure 4Structural schematic diagram of the outer shaft of the present utility model;

[0020] Figure 5 Structural schematic diagram of the fixed rod of the present utility model;

[0021] Figure 6 Structural schematic diagram of the fixed insertion rod of the present utility model.

[0022] In the figure: 1, wheel body; 2, fixed shaft; 3, debugging shaft; 4, connecting rod; 5, first linkage shaft; 6, second linkage shaft; 7, fixed rod; 8, outer shaft; 9, bottom block; 10, limit insertion rod; 11, fixed insertion rod; 12, front cover; 13, fixed flange. Specific embodiments

[0023] 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 creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1-6 , a technical solution provided by the present utility model:

[0025] In this embodiment, a fixing device for clamping a centrifuge impeller includes a wheel body 1. A fixed shaft 2 is provided on the inner wall of the wheel body 1. A debugging shaft 3 is movably installed on the outer wall of the fixed shaft 2. Connecting rods 4 are movably connected to the outer walls of the debugging shafts 3. A first linkage shaft 5 is fixedly installed on one side of the debugging shaft 3. A second linkage shaft 6 is fixedly installed on one side of the first linkage shaft 5. One end of the connecting rod 4 is connected to a fixed rod 7. An outer shaft 8 is installed on the outer wall of the fixed rod 7.

[0026] In this embodiment, a bottom block 9 is installed at one end of the fixed shaft 2. A limit insertion rod 10 is provided on the inner wall of the bottom block 9. A fixed insertion rod 11 is provided at one end of the limit insertion rod 10.

[0027] In this embodiment, a front cover 12 is installed at the other end of the fixed shaft 2. A fixed flange 13 is movably installed on the outer wall of the front cover 12.

[0028] In this embodiment, a thread is provided on the outer wall of the fixed shaft 2. The inner wall of the debugging shaft 3 is adapted to the thread on the outer wall of the fixed shaft 2. When the debugging shaft 3 rotates, it will move at the thread on the outer wall of the fixed shaft 2. Among them, the debugging shaft 3 is divided into two sections in total. One section is movably installed on the outer wall of the other section. When one section of the debugging shaft 3 rotates, it will not drive the other section of the debugging shaft 3 to rotate. The connecting rod 4 is movably installed on the outer wall of the other section of the debugging shaft 3.

[0029] In this embodiment, one end of the connecting rod 4 is movably connected to the outer wall of the debugging shaft 3, and the other end of the connecting rod 4 is movably connected to the outer wall of the fixed rod 7. When the debugging shaft 3 rotates, it will drive the debugging shaft 3 to move to one side, causing the connecting rod 4 to rotate.

[0030] In this embodiment, connecting rods 4 are movably installed on the outer walls of the first linkage shaft 5 and the second linkage shaft 6. The first linkage shaft 5 and the second linkage shaft 6 are both fixedly installed on the outer wall of the fixed shaft 2. The connecting rods 4 provided on the outer walls of the first linkage shaft 5 and the second linkage shaft 6 are both movably connected to the fixed rod 7.

[0031] In this embodiment, a cavity is provided at one end of the limit insertion rod 10. The diameter of the fixed insertion rod 11 is adapted to the diameter of the cavity of the limit insertion rod 10, and the fixed insertion rod 11 can be inserted into the cavity at one end of the limit insertion rod 10.

[0032] Working principle: When in use, first, the wheel body 1 needs to be placed at the installation location of the centrifuge. Then, the fixed shaft 2 is inserted into the inner wall of the wheel body 1, and the front cover 12 is installed at one end of the fixed shaft 2. Then, the fixed shaft 2 and the outer wall of the front cover 12 are fixed through the fixed flange 13;

[0033] Secondly, when the wheel body 1 is installed, it is very easy to shake, which will cause the installation of the wheel body 1 to be unstable. At this time, only need to rotate the debugging shaft 3 externally. When the debugging shaft 3 rotates, it will move to one side along the thread of the fixed shaft 2. When the debugging shaft 3 moves, the connecting rod 4 will rotate. At the same time, the connecting rods 4 on the outer walls of the first linkage shaft 5 and the second linkage shaft 6 will also rotate synchronously. When the connecting rod 4 rotates, it will drive the fixed rod 7 to expand. When the fixed rod 7 expands, it will be stuck in the inner wall of the wheel body 1, making it difficult for the wheel body 1 to rotate or shake;

[0034] Finally, in order to prevent the debugging shaft 3 from rotating, the user can insert the limit insertion rod 10 into the inner wall of the bottom block 9, so that the limit insertion rod 10 penetrates through the inner walls of the bottom block 9 and the debugging shaft 3. Then, insert the fixed insertion rod 11 into the cavity at one end of the limit insertion rod 10, making the fixed insertion rod 11 in a cross shape, so as to limit the debugging shaft 3 and prevent the debugging shaft 3 from rotating and causing the fixed rod 7 to contract.

[0035] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A fixing device for clamping a centrifuge impeller, comprising a wheel body (1), characterized in that: The inner wall of the wheel body (1) is provided with a fixed shaft (2), the outer wall of the fixed shaft (2) is movably mounted with a debugging shaft (3), the outer wall of the debugging shaft (3) is movably connected with a connecting rod (4), a first linkage shaft (5) is fixedly mounted on one side of the debugging shaft (3), a second linkage shaft (6) is fixedly mounted on one side of the first linkage shaft (5), one end of the connecting rod (4) is connected to a fixed rod (7), and an outer shaft (8) is mounted on the outer wall of the fixed rod (7).

2. The fixing device for clamping a centrifuge impeller according to claim 1, characterized in that: A bottom block (9) is mounted on one end of the fixed shaft (2), a limiting plug rod (10) is arranged on the inner wall of the bottom block (9), and a fixing plug rod (11) is arranged on one end of the limiting plug rod (10).

3. The fixing device for clamping a centrifuge impeller according to claim 1, characterized in that: A front cover (12) is mounted on the other end of the fixed shaft (2), and a fixed flange (13) is movably mounted on the outer wall of the front cover (12).

4. The fixing device for clamping a centrifuge impeller according to claim 1, characterized in that: The outer wall of the fixed shaft (2) is provided with a thread, and the inner wall of the debugging shaft (3) is adapted to the thread of the outer wall of the fixed shaft (2).

5. The fixing device for clamping a centrifuge impeller according to claim 1, characterized in that: One end of the connecting rod (4) is movably connected to the outer wall of the debugging shaft (3), and the other end of the connecting rod (4) is movably connected to the outer wall of the fixing rod (7).

6. The fixing device for clamping a centrifuge impeller according to claim 1, characterized in that: The outer walls of the first linkage shaft (5) and the second linkage shaft (6) are both movably mounted with connecting rods (4), and the first linkage shaft (5) and the second linkage shaft (6) are both fixedly mounted on the outer wall of the fixed shaft (2).

7. The fixing device for clamping a centrifuge impeller according to claim 2, characterized in that: One end of the limiting plug rod (10) is provided with a cavity, and the diameter of the fixing plug rod (11) is adapted to the diameter of the cavity of the limiting plug rod (10).

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