Motor structure of 315W blood centrifuge

Abstract

The utility model discloses a 315W blood centrifuge motor structure, which belongs to the technical field of centrifuges and comprises a stator and a rotor rotatably connected to an inner ring of the stator, the rotor is fixedly connected with a motor shaft, two ends of the stator are respectively sleeved with a top cover and a bottom cover in a matched manner, and the motor shaft penetrates through the top cover. A plurality of positioning columns are circumferentially arranged on the top cover with the axis of the top cover as the center, an elastic gasket is arranged on the top cover, first positioning holes in one-to-one correspondence with the positioning columns are formed in the elastic gasket, an annular waterproof plate is fixedly installed on the elastic gasket, and second positioning holes matched with the positioning columns are formed in the annular waterproof plate. An annular gap is formed between the inner ring of the annular waterproof plate and the motor shaft, and an elastic sealing ring is installed in the annular gap. The waterproof performance of the bottom surface of the annular waterproof plate is improved by arranging the elastic washer, the waterproof performance between the inner ring of the annular waterproof plate and the motor shaft is improved by arranging the elastic sealing ring, and the annular waterproof plate is convenient to mount and dismount.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifuges, and in particular relates to a 315W blood centrifuge motor structure. Background Art

[0002] In medical testing, centrifuges are commonly used to separate serum and plasma, precipitate proteins, or examine urine sediment. Centrifuges can rapidly precipitate suspended particles in a mixed solution, thereby separating components of various substances with different specific gravities. The motor in a centrifuge is the driving mechanism for medical centrifuges. A centrifuge consists of a centrifuge chamber and a motor chamber. The motor body is mounted in the motor chamber, and the motor shaft extends into the centrifuge chamber. A rubber shield separates the motor chamber from the centrifuge chamber. The motor shaft drives the rotor, achieving centrifugal separation of reagents, plasma, and other materials. Because the centrifuge chamber is refrigerated, temperature differences can cause condensation to form on the motor shaft over time. This condensation flows down the motor shaft and into the motor chamber, potentially damaging the motor.

[0003] In the prior art, Chinese Patent Publication No. CN 214014009 U discloses a centrifuge motor that improves the waterproof performance of the motor by installing a motor waterproof sheet on the motor shaft above the top cover. However, the motor waterproof sheet in the above technology is not easy to install and remove.

[0004] Therefore, it is necessary to propose a 315W blood centrifuge motor structure to solve the above problems. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a 315W blood centrifuge motor structure to solve the problem in the prior art that the motor waterproof sheet is inconvenient to install and disassemble.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0007] The utility model provides a 315W blood centrifuge motor structure, comprising a stator and a rotor rotatably connected to an inner ring of the stator, wherein the rotor is fixedly connected to a motor shaft, and two ends of the stator are respectively sleeved and matched with a top cover and a bottom cover, and the motor shaft is arranged through the top cover, and a plurality of positioning posts are circumferentially arranged on the top cover with the top cover axis as the center, and an elastic washer is provided on the top cover, and a first positioning hole corresponding to the plurality of positioning posts is provided on the elastic washer, and an annular waterproof plate is fixedly installed on the elastic washer, and the annular waterproof plate is provided with a second positioning hole matched with the positioning post, and an annular gap is provided between the inner ring of the annular waterproof plate and the motor shaft, and an elastic sealing ring is installed in the annular gap.

[0008] Furthermore, an installation gap is provided between the inner wall of the sealing gasket and the motor shaft, and the bottom end of the elastic sealing ring is inserted into the installation gap.

[0009] Furthermore, the outer wall of the elastic sealing ring is provided with an annular protrusion fixedly connected to the elastic sealing ring as a whole, and the width of the annular gap is smaller than the distance from the apex of the annular protrusion to the side wall of the motor shaft.

[0010] Furthermore, the outer wall of the elastic sealing ring is provided with a plurality of annular protrusions arranged side by side along the axis direction of the elastic sealing ring.

[0011] Furthermore, a limit plate is fixedly provided on the top of the annular waterproof plate, and the limit plate abuts against the top wall of the elastic sealing ring.

[0012] Furthermore, a threaded hole is provided on the positioning column, and the annular waterproof plate is threadedly fixedly connected to the threaded hole by bolts.

[0013] Furthermore, the outer wall of the stator is provided with a plurality of annular cooling fins arranged side by side along the stator axis.

[0014] The beneficial effects of the present invention are as follows: the present invention improves the waterproof performance of the bottom surface of the annular waterproof plate by arranging an elastic gasket, improves the waterproof performance between the inner ring of the annular waterproof plate and the motor shaft by arranging an elastic sealing ring, and the annular waterproof plate is easy to install and disassemble.

[0015] Other advantages, objectives, and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or they may be taught by those skilled in the art from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention is described with the following drawings:

[0017] Figure 1 This is a schematic diagram of the motor structure of an embodiment of the utility model;

[0018] Figure 2 For the embodiment of the utility model Figure 1 A magnified view of the middle part A;

[0019] Figure 3 This is an exploded view of the installation of the annular waterproof plate according to an embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of the annular waterproof board structure according to an embodiment of the present invention.

[0021] The markings in the accompanying drawings are as follows: stator 1, annular heat sink 101, rotor 2, motor shaft 3, top cover 4, positioning column 401, threaded hole 402, bottom cover 5, elastic washer 6, first positioning hole 601, installation gap 602, annular waterproof plate 7, second positioning hole 701, annular gap 702, limit plate 703, bolt 704, elastic sealing ring 8, annular protrusion 801. DETAILED DESCRIPTION

[0022] like Figures 1 to 4 As shown, the utility model provides a 315W blood centrifuge motor structure, comprising: a stator 1 and a rotor 2 rotatably connected to the inner ring of the stator 1, the rotor 2 is fixedly connected to a motor shaft 3, the two ends of the stator 1 are respectively sleeved with a top cover 4 and a bottom cover 5, the motor shaft 3 is arranged through the top cover 4, and a plurality of positioning posts 401 are circumferentially arranged on the top cover 4 with the axis of the top cover 4 as the center, an elastic gasket 6 is provided on the top cover 4, and a first positioning hole 601 corresponding to the plurality of positioning posts 401 is provided on the elastic gasket 6, an annular waterproof plate 7 is fixedly installed on the elastic gasket 6, and the annular waterproof plate 7 is provided with a second positioning hole 701 cooperating with the positioning post 401, an annular gap 702 is provided between the inner ring of the annular waterproof plate 7 and the motor shaft 3, and an elastic sealing ring 8 is installed in the annular gap 702.

[0023] In this solution, when installing the annular waterproof plate 7, first place the elastic gasket 6 on the top cover 4 in a one-to-one matching manner between the first positioning hole 601 and the positioning column 401, then sleeve the elastic sealing ring 8 on the motor shaft 3, and then place the annular waterproof plate 7 on the elastic gasket 6 in a one-to-one matching manner between the second positioning hole 701 and the positioning column 401, and then fix the annular waterproof plate 7 to the top cover 4 with bolts to complete the installation of the waterproof plate 7.

[0024] This solution improves the waterproof performance of the bottom surface of the annular waterproof plate 7 by setting an elastic gasket 6, and improves the waterproof performance between the inner ring of the annular waterproof plate 7 and the motor shaft 3 by setting an elastic sealing ring 8, and the annular waterproof plate 7 is easy to install and disassemble.

[0025] In one embodiment of the present invention, a mounting gap 602 is provided between the inner wall of the elastic washer 6 and the motor shaft 3 , and the bottom end of the elastic sealing ring 8 is inserted into the mounting gap 602 , so as to facilitate the installation of the elastic sealing ring 8 .

[0026] In one embodiment of the present invention, the outer wall of the elastic sealing ring 8 is provided with an annular protrusion 801 fixedly connected to the elastic sealing ring 8 as a whole, and the width of the annular gap 702 is smaller than the distance from the vertex of the annular protrusion 801 to the side wall of the motor shaft 3.

[0027] In this solution, after the annular waterproof plate 7 is installed, the inner ring of the annular waterproof plate 7 can squeeze the annular protrusion 801, so that the annular protrusion 801 and the motor shaft 3 are more tightly attached to improve the sealing performance.

[0028] In one embodiment of the present invention, a plurality of annular protrusions 801 are arranged side by side on the outer wall of the elastic sealing ring 8 along the axial direction of the elastic sealing ring 8 to further improve the sealing performance.

[0029] In one embodiment of the present invention, a limiting plate 703 is fixedly provided on the top of the annular waterproof plate 7, and the limiting plate 703 is abutted against the top wall of the elastic sealing ring 8 to limit the elastic sealing ring 8 in the annular gap 701, thereby ensuring the installation stability of the elastic sealing ring 8.

[0030] In one embodiment of the present invention, a threaded hole 402 is provided on the positioning column 401 , and the annular waterproof plate 7 is threadedly fixedly connected to the threaded hole 402 by a bolt 704 to ensure the installation stability of the annular waterproof plate 7 .

[0031] In one embodiment of the present invention, a plurality of annular cooling fins 101 are arranged side by side on the outer wall of the stator 1 along the axis of the stator 1 to improve the heat dissipation performance of the motor.

[0032] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A 315W blood centrifuge motor structure, comprising a stator and a rotor rotatably connected to the inner ring of the stator, characterized in that: The rotor is fixedly connected to the motor shaft, and the two ends of the stator are respectively sleeved with the top cover and the bottom cover. The motor shaft is arranged through the top cover. The top cover is circumferentially provided with a plurality of positioning posts centered on the axis of the top cover. An elastic gasket is provided on the top cover, and a first positioning hole corresponding to the plurality of positioning posts is provided on the elastic gasket. An annular waterproof plate is fixedly installed on the elastic gasket, and the annular waterproof plate is provided with a second positioning hole that cooperates with the positioning post. An annular gap is provided between the inner ring of the annular waterproof plate and the motor shaft, and an elastic sealing ring is installed in the annular gap.

2. The 315W blood centrifuge motor structure according to claim 1, characterized in that: An installation gap is provided between the inner wall of the sealing gasket and the motor shaft, and the bottom end of the elastic sealing ring is inserted into the installation gap.

3. The 315W blood centrifuge motor structure according to claim 1, characterized in that: The outer wall of the elastic sealing ring is provided with an annular protrusion fixedly connected to the elastic sealing ring as a whole, and the width of the annular gap is smaller than the distance from the apex of the annular protrusion to the side wall of the motor shaft.

4. The 315W blood centrifuge motor structure according to claim 3, characterized in that: The outer wall of the elastic sealing ring is provided with a plurality of annular protrusions arranged side by side along the axis direction of the elastic sealing ring.

5. The 315W blood centrifuge motor structure according to claim 1, characterized in that: A limiting plate is fixedly provided on the top of the annular waterproof plate, and the limiting plate abuts against the top wall of the elastic sealing ring.

6. The 315W blood centrifuge motor structure according to claim 5, characterized in that: The positioning column is provided with a threaded hole, and the annular waterproof plate is threadedly fixedly connected to the threaded hole through bolts.

7. The 315W blood centrifuge motor structure according to claim 1, characterized in that: The outer wall of the stator is provided with a plurality of annular cooling fins arranged side by side along the stator axis direction.

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