Driving mechanism of high-speed centrifugal machine

Abstract

The utility model relates to a high-speed centrifugal machine driving mechanism which comprises a driving piece, a driving shaft and a heat dissipation component, an output shaft of the driving piece is connected with the driving shaft, the driving shaft is fixed through a bearing, the heat dissipation component comprises a fixing portion and a heat dissipation portion, the heat dissipation component is provided with a penetrating hole, and the fixing portion is connected with the heat dissipation portion. A penetrating hole is formed in the fixing part and penetrates through the fixing part and the heat dissipation part, the heat dissipation part is provided with an inlet, an outlet and a cooling channel, the cooling channel is communicated with the inlet and the outlet, the heat dissipation part is connected to the driving shaft and the bearing in a sleeving mode and makes contact with the outer ring of the bearing, and the heat dissipation component is fixedly connected with the driving part through the fixing part. According to the utility model, the heat dissipation component is arranged in the mounting part of the driving shaft, and the rapidly flowing cooling liquid takes away heat of the rotating shaft and the bearing, so that the temperature of the bearing is reduced, the service life of bearing grease is prolonged, and the service life of the bearing is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to centrifuge heat dissipation technical field, specifically relates to a high speed centrifuge drive mechanism. BACKGROUND

[0002] A centrifuge is a device that separates liquid suspensions of different densities and particle sizes by centrifugal force. The sample is placed in the rotor of the centrifuge. The rotor is mounted on the top end of the drive shaft, and the drive shaft is directly connected to the drive motor through the shaft coupling.

[0003] At present, the rotating speed of the equipment driven by high-speed motor is faster and faster, such as the rotating speed of high-speed centrifuge is above 10000 revolutions per minute, and the rotating speed of super-speed centrifuge is above 30000 revolutions per minute, and the high-speed motor is directly driven. This requires higher and higher high-speed motor. Under this condition, the drive shaft bearing of high-speed motor will generate a large amount of heat due to high-speed operation. If the heat cannot be dissipated in time, the rapidly rising temperature will quickly cause the deterioration of bearing grease, which will greatly shorten the normal service life of the bearing.

[0004] In summary, it is urgent to provide a high-speed centrifuge drive mechanism capable of reducing the temperature of the bearing and prolonging the service life of the bearing. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a high-speed centrifuge drive mechanism capable of reducing the temperature of the bearing and prolonging the service life of the bearing.

[0006] The above-mentioned purpose is realized by the following technical scheme: a high-speed centrifuge drive mechanism, comprising a driving part, a drive shaft and a heat dissipation component, the output shaft of the driving part is connected with the drive shaft, the drive shaft is fixed through a bearing, the heat dissipation component comprises a fixed part and a heat dissipation part, the heat dissipation component is provided with a through hole, the through hole penetrates the fixed part and the heat dissipation part, the heat dissipation part is provided with an inlet, an outlet and a cooling channel, the cooling channel communicates the inlet and the outlet, the heat dissipation part is sleeved on the drive shaft and the bearing and is in contact with the outer ring of the bearing, and the heat dissipation component is fixedly connected with the driving part through the fixed part.

[0007] The utility model is used for driving high-speed centrifuge, the heat dissipation component is arranged in the mounting part of the drive shaft, the cooling liquid flows through the inlet, the cooling channel and the outlet of the heat dissipation part, and the heat of the rotating shaft and the bearing is taken away by the rapidly flowing cooling liquid, so that the temperature of the bearing is reduced, the service life of the bearing grease is prolonged, and the normal service life of the bearing is improved. In order to ensure the heat dissipation effect, the heat dissipation component is preferably made of copper alloy with high thermal conductivity, so that the heat of the bearing can be quickly transferred and taken away by the rapidly flowing cooling and heat dissipation medium.

[0008] Further, the cooling passage comprises a plurality of axial cooling flow channels arranged along the axial direction of the through hole, and a plurality of annular cooling flow channels arranged on the upper and lower end faces of the heat dissipation part, the annular cooling flow channels being connected with the axial cooling flow channels and forming the cooling passage with a fixed flow direction. In the specific application, the plurality of axial cooling flow channels are evenly distributed along the annular direction of the heat dissipation member, the axial cooling flow channels pass through the heat dissipation part, and the annular cooling flow channels are connected with the axial cooling flow channels on the upper and lower end faces of the heat dissipation part to form the cooling passage with a fixed flow direction.

[0009] Further, the bearing comprises a first bearing and a second bearing arranged in an upper and lower manner, the driving shaft is arranged in the inner ring of the first bearing and the second bearing, the outer ring of the first bearing and the second bearing is in contact with the inner wall of the heat dissipation part, and heat exchange is performed through the cooling liquid flowing through the axial cooling flow channel. In this way, when the cooling liquid flows into the cooling passage formed by the axial cooling flow channel and the annular cooling flow channel from the cooling liquid inlet, then flows out from the cooling liquid outlet, and then flows into the cooling liquid inlet again after being cooled and heat-dissipated, a stable and rapid flow of the cooling and heat-dissipating medium is formed, and the heat generated by the high-speed rotation of the first bearing and the second bearing is conducted to the inner wall of the heat dissipation part, and the heat of the driving shaft, the first bearing and the second bearing is timely removed by the rapid flow of the cooling and heat-dissipating medium, thereby reducing the temperature of the first bearing and the second bearing.

[0010] Further, the fixing part is arranged at one end of the heat dissipation part, and a buffer layer is arranged between the fixing part and the heat dissipation part. In the specific application, the silicone buffer layer is poured between the fixing part and the heat dissipation part during the molding process of the heat dissipation member.

[0011] Further, the heat dissipation part is provided with a first sealing end cover and a second sealing end cover at the two ends thereof, respectively, and an elastic retainer is arranged between the first sealing end cover and the first bearing, and between the second sealing end cover and the second bearing. In this way, the elastic retainer is installed above the first bearing and abuts against the inner ring of the first bearing to limit the axial displacement of the first bearing. In the specific application, the first sealing end cover is fixed to the upper part of the heat dissipation part by screws. The first sealing end cover and the second sealing end cover are mainly used for sealing to prevent the cooling liquid from overflowing.

[0012] Further, the contact part of the first sealing end cover and the second sealing end cover with the heat dissipation part is provided with a sealing gasket. In this way, the sealing gasket can further prevent the rapid flow of the cooling liquid in the heat dissipation part from overflowing.

[0013] Further, the sealing gasket is made of silicone.

[0014] Further, a pressing plate member is arranged above the fixing part, and the heat dissipation member is tightly fixed on the driving member by the pressing plate fastening screw.

[0015] Further, the driving shaft is connected with the driving shaft of the driving member through a coupling. The driving member is a centrifugal motor, the output shaft of the centrifugal motor is connected with the driving shaft through a coupling to output power to the high-speed centrifuge, and the driving shaft and the output shaft of the driving member are solid shafts.

[0016] Further, a plurality of base fastening screws for mounting the high-speed centrifuge are arranged on the driving member.

[0017] Compared with the prior art, the technical scheme of the utility model, by arranging the heat dissipation member in the mounting part of the driving shaft, the cooling liquid flows through the inlet, the cooling channel and the outlet of the heat dissipation part, and the cooling liquid with high speed carries away the heat of the rotating shaft and the bearing, so that the temperature of the bearing is reduced, and the service life of the bearing grease is prolonged, and the normal service life of the bearing is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, and are incorporated herein for purposes of illustration. The embodiments of the application, together with its details, are shown and described in the drawings and specification.

[0019] Figure 1 is a sectional structure schematic view of the driving mechanism of the high-speed centrifuge according to an embodiment of the utility model;

[0020] Figure 2 and Figure 3 are structure schematic views of the heat dissipation member from different perspectives according to an embodiment of the utility model;

[0021] Figure 4 is a top view of the heat dissipation member according to the utility model; Figure 2

[0022] Figure 5 is a sectional view of the heat dissipation member along A-A according to the utility model; Figure 4

[0023] Figure 6 is a sectional view of the heat dissipation member along B-B according to the utility model. Figure 4

[0024] In the drawings:

[0025] 1 driving member 2 base fastening screw 3 pressing plate member 4 pressing plate fastening screw

[0026] 5 buffer layer 6 axial cooling flow channel 7 inlet 8 outlet ​​​

[0027] 9 first bearing 10 drive shaft 11 first seal end cover 12 elastic baffle ring

[0028] 13 annular cooling flow channel 14 heat dissipation part 15 second bearing 16 coupling

[0029] 17 output shaft 18 second seal end cover 19 fixed part DETAILED DESCRIPTION

[0030] The utility model will be described in detail below in combination with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the utility model. In addition, those skilled in the art can combine the features in the embodiments in this document and the features in different embodiments according to the description in this document.

[0031] The utility model implementation is as follows, refer to Figures 1-6 A high-speed centrifuge driving mechanism, including drive piece 1, drive shaft 10 and heat dissipation member, the output shaft 17 of drive piece 1 is connected with drive shaft 10, drive shaft 10 is fixed through bearing, heat dissipation member includes fixed part 19 and heat dissipation part 14, heat dissipation member is equipped with the hole of passing through, the hole of passing through is through fixed part 19 and heat dissipation part 14, heat dissipation part 14 is equipped with import, export 8 and cooling channel, cooling channel is communicated import and export 8, heat dissipation part 14 is sleeved in drive shaft 10 and bearing and is contacted with the outer ring of bearing, heat dissipation member is fixedly connected with drive piece 1 through fixed part 19.

[0032] The utility model is used to drive high-speed centrifuge, through setting heat dissipation member in the installation part of drive shaft 10, cooling liquid is taken away the heat of rotating shaft and bearing by the inlet 7 of heat dissipation part 14, cooling channel flow channel and outlet 8, to reduce bearing temperature, and then prolong the service life of bearing grease, improve the normal service life of bearing. To guarantee the heat dissipation effect, heat dissipation member is preferably made of copper alloy with high thermal conductivity, and the heat of bearing is quickly transferred, so that it is quickly taken away by the cooling heat dissipation medium flowing quickly.

[0033] On the basis of the above embodiment, another embodiment of the utility model is as follows, Figures 1-6The cooling channel comprises a plurality of axial cooling flow channels 6 arranged along the axial direction of the through hole, and a plurality of annular cooling flow channels 13 arranged on the upper and lower end faces of the heat radiating part 14, which are connected with the axial cooling flow channels 6 and form the cooling channel with fixed flow direction. In the specific application, the plurality of axial cooling flow channels 6 are uniformly distributed along the annular direction of the heat radiating member, the axial cooling flow channels 6 penetrate through the heat radiating part 14, and the annular cooling flow channels 13 are arranged on the upper and lower end faces of the heat radiating part 14 to connect the adjacent axial cooling flow channels 6, thereby forming the cooling channel with the specified flow direction.

[0034] On the basis of the above-mentioned embodiments, in another embodiment of the present application, Figure 1 The bearing comprises a first bearing 9 and a second bearing 15 arranged in an upper and lower manner, the driving shaft 10 is arranged in the inner ring of the first bearing 9 and the second bearing 15, the outer rings of the first bearing 9 and the second bearing 15 are in contact with the inner wall of the heat radiating part 14, and heat exchange is performed through the cooling liquid flowing through the axial cooling flow channel 6. In this way, when the cooling liquid flows into the cooling channel formed by the axial cooling flow channel 6 and the annular cooling flow channel 13 from the cooling liquid inlet 7, then quickly flows out from the cooling liquid outlet 8, and then quickly flows into the cooling liquid inlet 7 again after cooling and heat radiation, a stable and rapid flowing cooling and heat radiation medium is formed by continuous circulation, and then the heat generated by the high-speed rotation of the first bearing 9 and the second bearing 15 is conducted to the inner wall of the heat radiating part 14, and the heat of the driving shaft 10, the first bearing 9 and the second bearing 15 is timely taken away by the rapid flowing cooling and heat radiation medium, so as to reduce the temperature of the first bearing 9 and the second bearing 15.

[0035] On the basis of the above-mentioned embodiments, in another embodiment of the present application, Figures 1-3 The fixed part 19 is arranged at one end of the heat radiating part 14, and a buffer layer 5 is arranged between the fixed part 19 and the heat radiating part 14. In the specific application, the silica gel buffer layer 5 is poured between the fixed part 19 and the heat radiating part 14 during the forming process of the heat radiating member.

[0036] On the basis of the above-mentioned embodiments, in another embodiment of the present application, Figure 1 The heat radiating part 14 is provided with a first sealing end cover 11 and a second sealing end cover 18 at two ends, respectively, and an elastic retainer 12 is arranged between the first sealing end cover 11 and the first bearing 9 and between the second sealing end cover 18 and the second bearing 15. In this way, the elastic retainer 12 is arranged above the first bearing 9 and abuts against the inner ring of the first bearing 9 to limit the axial displacement of the first bearing 9. In the specific application, the first sealing end cover 11 is fixed to the upper part of the heat radiating part 14 by screws. The first sealing end cover 11 and the second sealing end cover 18 are mainly used for sealing to prevent the cooling liquid from overflowing.

[0037] On the basis of the above-mentioned embodiments, another embodiment of the utility model provides Figure 1 , the contact part of first sealing end cover 11 and second sealing end cover 18 with heat dissipation part 14 is equipped with sealing pad. Thus, the setting of sealing pad can further prevent the cooling liquid in heat dissipation part 14 from overflowing.

[0038] On the basis of the above-mentioned embodiments, another embodiment of the utility model provides that the sealing pad is prepared by silica gel.

[0039] On the basis of the above-mentioned embodiments, another embodiment of the utility model provides Figure 1 , the fixed part 19 top is equipped with the pressing plate spare 3, and the pressing plate spare 3 is tightly fixed with heat dissipation member on driving element 1 through pressing plate fastening screw 4.

[0040] On the basis of the above-mentioned embodiments, another embodiment of the utility model provides Figure 1 , the driving shaft 10 is connected with the driving shaft 10 of driving element 1 through coupling. Driving element 1 is centrifugal motor, and the output shaft 17 of centrifugal motor is connected with driving shaft 10 through coupling 16 and exports power to high-speed centrifuge, and the output shaft 17 of driving element 1 and driving shaft 10 are all solid shafts.

[0041] On the basis of the above-mentioned embodiments, another embodiment of the utility model provides Figure 1 , the driving element 1 is equipped with a plurality of base fastening screws 2 for installing high-speed centrifuge.

[0042] The above-mentioned is only the preferred implementation mode of the utility model, and it should be pointed out that for ordinary skilled person in the art, on the premise of not departing from the principle of the utility model, can make a number of improvements and refinements, and these improvements and refinements also should be considered as the protection scope of the utility model.

Claims

1. A high speed centrifuge drive mechanism, characterized by, The application relates to a cooling device for a driving member, which comprises a driving member, a driving shaft and a heat radiating member, wherein the output shaft of the driving member is connected with the driving shaft, the driving shaft is fixed through a bearing, the heat radiating member comprises a fixed part and a heat radiating part, the heat radiating member is provided with a through hole, the through hole penetrates the fixed part and the heat radiating part, the heat radiating part is provided with an inlet, an outlet and a cooling channel, the cooling channel is communicated with the inlet and the outlet, the heat radiating part is sleeved on the driving shaft and the bearing and is contacted with the outer ring of the bearing, and the heat radiating member is fixedly connected with the driving member through the fixed part.

2. The high speed centrifuge drive mechanism of claim 1, wherein, The cooling channel comprises a plurality of axial cooling flow channels arranged along the axial direction of the through hole and a plurality of annular cooling flow channels arranged on the upper end face and the lower end face of the heat radiating part, the annular cooling flow channels are communicated with the axial cooling flow channels and form the cooling channel with fixed flow direction.

3. The high speed centrifuge drive mechanism of claim 2, wherein, The bearing comprises a first bearing and a second bearing arranged in a vertical mode, the driving shaft is arranged in the inner rings of the first bearing and the second bearing, the outer rings of the first bearing and the second bearing are respectively contacted with the inner wall of the heat radiating part, and heat exchange is conducted through the cooling liquid flowing through the axial cooling flow channels.

4. The high speed centrifuge drive mechanism of claim 1, wherein, The fixed part is arranged at one end of the heat radiating part, and a buffer layer is arranged between the fixed part and the heat radiating part.

5. The high speed centrifuge drive mechanism of claim 3, wherein, The two ends of the heat radiating part are respectively provided with a first sealing end cover and a second sealing end cover, and elastic retaining rings are arranged between the first sealing end cover and the first bearing and between the second sealing end cover and the second bearing.

6. The high speed centrifuge drive mechanism of claim 5, wherein, Sealing pads are arranged at the contact positions of the first sealing end cover, the second sealing end cover and the heat radiating part.

7. The high speed centrifuge drive mechanism of claim 6, wherein, The sealing pads are made of silica gel.

8. The high speed centrifuge drive mechanism of claim 1, wherein, A pressing plate member is arranged above the fixed part, the heat radiating member is tightly fixed on the driving member through the pressing plate member and pressing plate fastening screws.

9. The high speed centrifuge drive mechanism of claim 1, wherein, The driving shaft is connected with the driving shaft of the driving member through a shaft coupling.

10. The high speed centrifuge drive mechanism of claim 1, wherein, A plurality of base fastening screws for mounting a high-speed centrifuge are arranged on the driving member.

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