CN217594869U - Low-noise transmission device of centrifugal machine - Google Patents

Abstract

The utility model provides a low-noise transmission device of a centrifugal machine, which comprises a base and a motor; the motor is fixedly connected with the bottom surface of the base through a support column, and an installation space is formed between the motor and the base; an output shaft of the motor is accommodated in the installation space; a driving belt wheel is fixedly connected to the output shaft; the rotary main shaft is rotatably supported in the base, one end of the rotary main shaft extends out of the bottom surface, and the part of the rotary main shaft extending out of the bottom surface is fixedly connected with a driven belt wheel; the driving belt wheel and the driven belt wheel are connected through a synchronous belt in a transmission mode. The low-noise centrifugal machine transmission device provided by the utility model has the advantages that the center distance between the driving belt wheel and the driven belt wheel is reduced, the transmission is more stable, and the noise is less; elastic force is arranged between the elastic washer and the second bearing, the limit controllability of the second bearing is greatly improved, the machining precision requirement is reduced, and the noise of the transmission device is greatly reduced.

Description

Low noise centrifuge transmission

Technical Field

The utility model belongs to biological cell processing field, concretely relates to low noise centrifuge transmission.

Background

In the field of biological cell treatment, it is often necessary to concentrate a cultured cell sample solution, remove excess culture medium and waste solution, and then perform subsequent operations such as washing. The separation technology in cell concentration mainly depends on the high-speed rotation of a centrifuge, and because the cell sample liquid receives centripetal force due to the high-speed rotation in a centrifuge cup, the components of each substance in the cell have mass difference, so the centripetal force received by each substance is different, and the rotating radius of each substance in the centrifuge is different, thereby separating the cells.

The prior art already has a centrifuge for concentrating and separating cell sap, but the centrifuge has great noise in the use process and is not good in use feeling. The main sources of noise in prior art centrifuges are typically: 1. noise generated by a synchronous belt in the transmission device is generated, and because the synchronous belt is tensioned, the heat generated by friction between the synchronous belt and a synchronous belt wheel is more, the noise is higher, and the synchronous belt is easy to slip under the condition of being too loose; 2. the bearing and the base in the transmission device generate noise, the matching of the bearing and the base is clearance fit, theoretically, the bearing can be completely constrained in the axial direction, but accumulated errors are easy to generate in processing, the bearing is difficult to be completely constrained, and the bearing rotates at high speed under the condition that the bearing is not completely constrained to generate axial play, so that larger noise can be generated; 3. the noise that rotatory main shaft and bearing produced, because rotatory main shaft and bearing cooperation installation easily produce the noise between the two.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, the technical scheme adopted by the utility model is to provide a low-noise transmission device of a centrifuge, which has small volume and low cost and can carry out the synchronous motion of a waste liquid bag and a product bag weighing device; the sensor assembly can be manually stretched after power failure, so that after-sale maintenance and adjustment are facilitated.

In order to realize one of above-mentioned purpose at least, the utility model discloses a technical scheme be:

the utility model provides a low-noise transmission device of a centrifugal machine, which comprises a base and a motor; the motor is fixedly connected with the bottom surface of the base through a support column, and an installation space is formed between the motor and the base; an output shaft of the motor is accommodated in the installation space; a driving belt wheel is fixedly connected to the output shaft; the rotary main shaft is rotatably supported in the base, one end of the rotary main shaft extends out of the bottom surface, and the part of the rotary main shaft extending out of the bottom surface is fixedly connected with a driven belt wheel; the driving belt wheel and the driven belt wheel are connected through a synchronous belt in a transmission mode.

Furthermore, a through hole is formed in the center of the base, and bearing holes are formed in two ends of the through hole respectively.

Further, a first bearing and a second bearing are respectively arranged in the two bearing holes.

Further, the rotating main shaft is rotatably supported on the base by the first bearing and the second bearing.

Furthermore, the base is fixedly connected with an end cover at the installation position of the first bearing, and the end cover axially limits the first bearing.

Furthermore, the base is fixedly connected with a gasket end cover at the installation position of the second bearing, the gasket end cover is fixed on the base through a screw, and the gasket end cover axially limits the second bearing.

Further, an elastic gasket is arranged between the second bearing and the gasket end cover.

Further, the elastic gasket is pressed by the gasket end cover, and the elastic gasket is abutted with the outer ring of the second bearing.

Further, a distance adjusting press block is arranged between the driving belt wheel and the driven belt wheel.

Furthermore, the distance adjusting press block is connected with the base through an adjusting screw, and the inclined plane side of the distance adjusting press block is abutted to the synchronous belt; and adjusting the position of the distance adjusting pressing block through the adjusting screw to perform tensioning adjustment of the synchronous belt.

The utility model provides a low noise centrifuge transmission compares with prior art, the beneficial effects of the utility model reside in that:

the utility model provides an among the low noise centrifuge transmission, the motor passes through the support column to be installed in the lower part of base, and driving pulley installs in the installation space between motor and base, makes driving pulley and driven pulley's centre-to-centre spacing reduce, and the transmission is more steady, and the noise is littleer.

In the low-noise centrifugal machine transmission device provided by the utility model, the axial limit of the second bearing is carried out through the gasket end cover and the elastic gasket, the elastic force is formed between the elastic gasket and the second bearing, the axial bearing load of the second bearing is smaller, and the use of the second bearing is not influenced; the limit controllability of the second bearing can be greatly increased, the machining precision requirement is reduced, the bearing cannot generate axial movement in the high-speed rotating process, and the noise of the transmission device is greatly reduced.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the scope of the application.

Drawings

FIG. 1 is a schematic diagram of a low noise centrifuge drive according to an embodiment of the present application;

FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

the device comprises a base 1, a rotating main shaft 2, a first bearing 3, a second bearing 4, an end cover 5, an elastic washer 6, a washer end cover 7, a driven pulley 8, a motor 9, a driving pulley 10, a synchronous belt 11 and a distance-adjusting pressing block 12.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the following specific embodiments. It should be noted that the following described embodiments are exemplary only, and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection or electrical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

The present invention provides a low noise centrifuge drive device, which will be described in detail below by way of specific embodiments:

as shown in fig. 1-2, the present embodiment provides a low noise transmission device for a centrifuge, which mainly includes a base 1, a rotating spindle 2, a first bearing 3, a second bearing 4, a motor 9, a driving pulley 10, a driven pulley 8, a synchronous belt 11, and a distance-adjusting press block 12.

The center of the base 1 is provided with a through hole, and two ends of the through hole are respectively provided with a bearing hole. A first bearing 3 and a second bearing 4 are respectively installed in the bearing holes, and the rotating main shaft 2 is rotatably supported on the base 1 through the first bearing 3 and the second bearing 4.

The first bearing 3 installation department on base 1 upper portion has linked firmly end cover 5, end cover 5 will first bearing 3 carries out axial spacing. An elastic gasket 6 and a gasket end cover 7 are arranged at the mounting position of the second bearing 4 at the lower part of the base 1. The gasket end cover 7 is fixed on the base 1 through a screw, the elastic gasket 6 is arranged between the second bearing 4 and the gasket end cover 7, and the gasket end cover 7 compresses the elastic gasket 6 to enable the elastic gasket 6 to be abutted with the outer ring of the second bearing 4. Elastic force is arranged between the elastic washer 6 and the second bearing 4, the second bearing 4 is axially limited, and the elastic force is small, so that the axial load of the second bearing 4 is small, and the function of the bearing cannot be influenced. The second bearing 4 is preferably a deep groove ball bearing, the second bearing 4 is axially limited through an elastic washer 6 and a washer end cover 7, the axial bearing load of the second bearing 4 is small, and the use of the second bearing 4 is not affected; therefore, the limit controllability of the second bearing 4 can be greatly increased, the machining precision requirement is reduced, the bearing cannot generate axial movement in the high-speed rotating process, and the noise of the transmission device is greatly reduced.

The part of the rotating main shaft 2 extending out of the second bearing 4 is fixedly connected with a driven belt wheel 8. The lower part of the base 1, namely the same side of the driven belt wheel 8, is provided with a motor 9. The motor 9 is mounted on the base 1 through a support column, so that a mounting space is formed between an output end surface of the motor 9 and a lower end surface of the base 1. The mounting space accommodates an output shaft of the motor 9 and a driving pulley 10, and the driving pulley 10 is fixedly connected to the output shaft of the motor 9. The driving pulley 10 and the driven pulley 8 are in transmission connection through a synchronous belt 11. The motor 9 is in the mounting means of below, makes driving pulley and driven pulley's centre-to-centre spacing reduce, makes the transmission more steady, and the noise is littleer.

An adjusting weight 12 is provided between the driving pulley 10 and the driven pulley 8. The distance adjusting press block 12 is connected with the base 1 through a screw, and the inclined surface side of the distance adjusting press block 12 is abutted with the synchronous belt 11. The position of the distance adjusting pressing block 12 is adjusted through the screw, the tensioning degree of the synchronous belt can be adjusted through the inclined plane side of the distance adjusting pressing block 12, and the adjusting mode is simple, convenient and reliable.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Claims (10)

1. A low noise transmission device of a centrifuge is characterized by comprising a base and a motor; the motor is fixedly connected with the bottom surface of the base through a support column, and an installation space is formed between the motor and the base; an output shaft of the motor is accommodated in the installation space; a driving belt wheel is fixedly connected to the output shaft; the rotary main shaft is rotatably supported in the base, one end of the rotary main shaft extends out of the bottom surface, and the part of the rotary main shaft extending out of the bottom surface is fixedly connected with a driven belt wheel; the driving belt wheel and the driven belt wheel are connected through a synchronous belt in a transmission mode.

2. The transmission device of claim 1, wherein the base has a through hole formed at a center portion thereof, and the through hole has bearing holes formed at both ends thereof.

3. The low noise centrifuge drive of claim 2, wherein a first bearing and a second bearing are disposed in each of the two bearing holes.

4. The low noise centrifuge drive of claim 3, wherein said rotating spindle is rotatably supported on said base by said first and second bearings.

5. The low noise centrifuge drive of claim 4, wherein the base has an end cap attached to the mount of the first bearing, the end cap axially retaining the first bearing.

6. The low noise centrifuge drive of claim 5, wherein the base has a washer end cap attached to the base at the location where the second bearing is mounted, the washer end cap being secured to the base by a screw, the washer end cap axially retaining the second bearing.

7. The low noise centrifuge drive of claim 6, wherein a resilient washer is positioned between the second bearing and the washer end cap.

8. The low noise centrifuge drive of claim 7, wherein said washer end cap compresses said elastomeric washer against said outer race of said second bearing.

9. The low noise centrifuge transmission of claim 8, wherein a distance adjusting weight is disposed between the drive pulley and the driven pulley.

10. The transmission device of claim 9, wherein the distance adjusting press block is connected with the base through an adjusting screw, and the inclined side of the distance adjusting press block is abutted against the synchronous belt; and adjusting the position of the distance adjusting pressing block through the adjusting screw to perform tensioning adjustment of the synchronous belt.

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