CN2053947U - Table type centrifuger with broken shaft protector - Google Patents
Table type centrifuger with broken shaft protector Download PDFInfo
- Publication number
- CN2053947U CN2053947U CN89213858U CN89213858U CN2053947U CN 2053947 U CN2053947 U CN 2053947U CN 89213858 U CN89213858 U CN 89213858U CN 89213858 U CN89213858 U CN 89213858U CN 2053947 U CN2053947 U CN 2053947U
- Authority
- CN
- China
- Prior art keywords
- driving shaft
- sleeve
- motor
- axle
- centrifuge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000001012 protector Effects 0.000 title abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 238000003556 assay Methods 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Centrifugal Separators (AREA)
Abstract
The utility model relates to a table type centrifuger with broken shaft protector which is an improvement of the existing table centrifuge structure. The flexibility shaft with a protector of the utility model does not rotate a rotor directly but rotate the rotor by a broken shaft protecting mechanism, and the goal of broken shaft protecting is achieved. The utility model is characterized in that an electromotor and a drive shaft are separately established, and is double-board shake reducing, and which improves the ability of anti-imbalance quantity of storing sample. The table type centrifuger with broken shaft protector can be used in common laboratorys, in particular to hospital labouratorys of daily assay working, improving the work efficiency of the assay working.
Description
The invention belongs to the improvement of desk centrifuge.
Desk centrifuge (table top centrifuge or bench top centrifuge) is a kind of of laboratory centrifuge, and (floor centrifuge) compares with the console mode centrifuge, and its volume is little, and is in light weight, can place on the experimental bench to use.But because the rotor of desk centrifuge is little, and treating capacity is less than the console mode centrifuge, and its use is restricted.
In recent years du pont company (Du Pont Sorvall) release can instead of part console mode centrifuge function, can drive more trochiterian desk centrifuge, the scope of application of desk centrifuge is greatly enlarged.Motor is inverted in by the rotor chamber in its transmission mechanism, and motor shaft is given rotor drive shaft transmission of power by belt, thereby has reduced the centrifuge height, even also become desk centrifuge when using big motor like this.In this kind centrifuge, still adopt the flexible axle top directly to drive the transmission mechanism of rotor, make rotor under low speed, pass through cal speed during design as far as possible, and have the automatic aligning performance, to be implemented in the steady running under the working speed.The shortcoming of this flexible axle driver is, it not only can not make the rotor than the large unbalance useful load run well, in case and during the main shaft fracture, the rotor in the rotation leaves former installation site at a high speed, hits rotor chamber while changeing, can cause the accident of danger.
The objective of the invention is to design a kind of desk centrifuge that to avoid causing the axis system of machine breakdown that has because of off-axis.For this reason, designed a kind of desk centrifuge of tool off-axis insurance, it has the self-centering driving shaft discrete with motor, and its top constitutes can avoid causing because of off-axis the centrifuge principal axis system of machine breakdown, and laterally links by belt and inverted drive motors axle.Because this self-centering driving shaft is what to separate with motor, and by the soft connection of belt, vibration in the motor rotation and heat are difficult for being delivered to drive division, make its running steadily, and the life-span is long.Again because the installation of the discrete driving shaft of this and motor is to be independent of that motor is installed quality and self-chambering is self-centering, it is installed, and easier accurately driving shaft is that concentricity is higher, easily guarantees the running balance, reduces running noise, life-saving.
The desk centrifuge of the tool off-axis insurance that the present invention proposes comprises motor ［ 6 ］, driving belt ［ 4 ］, driving shaft ［ 13 ］, off-axis insurance institution, damper ［ 1,5,8,19 ］, frame ［ 2 ］ etc.
The invention is characterized in that driving shaft ［ 13 ］ is not the direct extension of motor ［ 6 ］ but connects with motor ［ 6 ］ by driving belt ［ 4 ］ and motor pulley ［ 3 ］, so driving shaft ［ 13 ］ separates with motor ［ 6 ］, and motor is inverted.Motor ［ 6 ］ and driving shaft ［ 13 ］ respectively are fixedly connected by suitable damper ［ 5,19 ］ and suitable transition part and frame ［ 2 ］.
Driving shaft ［ 13 ］ is not directly to drive rotor ［ 18 ］, but drives the rotor rotation by off-axis insurance institution.
Driving shaft ［ 13 ］ is installed on lower plate ［ 7 ］ and the upper plate ［ 9 ］ by suitable damper with off-axis insurance institution, and uses damping ［ 8 ］ device vibration damping between upper plate and the lower plate.Like this, frame ［ 2 ］ is passed in the vibration that reduces effectively in rotor ［ 18 ］ running, has also just strengthened the permission dress sample amount of unbalance of this machine.
Motor ［ 6 ］ is through driving belt ［ 4 ］ drive driving shaft ［ 13 ］ rotation, and driving shaft drives axle sleeve ［ 22 ］ rotation by off-axis insurance institution, and rotor ［ 18 ］ is connected in upward rotation of axle sleeve ［ 22 ］.
Driving shaft ［ 13 ］ is installed in lower plate ［ 7 ］ central authorities by two ball bearings ［ 11 ］ and rotates freely.Driving belt ［ 4 ］ is installed by belt pulley ［ 10 ］ in driving shaft ［ 13 ］ lower end, the upper end is a sleeve, part (the steel ball ［ 15 ］ of off-axis insurance institution wherein is installed, pin ［ 16 ］, the lower end of flexible axle ［ 14 ］), give flexible axle ［ 14 ］ in the off-axis insurance institution transmission of power by these parts.
Off-axis insurance institution comprises axle sleeve ［ 22 ］, flexible axle unit, splicing sleeve ［ 12 ］ and upper plate ［ 9 ］ etc.Flexible axle in the flexible axle unit ［ 14 ］ upper end is fixedly connected with axle sleeve ［ 22 ］ and rotates.
There is ball bearing ［ 23,25 ］ to realize this rotation between splicing sleeve ［ 12 ］ and the axle sleeve ［ 22 ］.Splicing sleeve ［ 12 ］ is fixed on upper plate ［ 9 ］ above the central authorities.
The flexible axle unit comprises flexible axle ［ 14 ］, steel ball ［ 15 ］, pin ［ 16 ］ and spring ［ 17 ］.Insert in steel ball ［ 15 ］ centre bore flexible axle ［ 14 ］ lower end, and a pin ［ 16 ］ crosses these two parts and is integral, and the pin ［ 16 ］ that stretch out on steel ball ［ 15 ］ both sides inserts in the groove ［ 21 ］ of driving shaft ［ 13 ］ upper sleeve.Pull pin ［ 16 ］ during driving shaft ［ 13 ］ rotation and drive flexible axle ［ 14 ］ and rotate.Look the running needs, contact with steel ball ［ 15 ］ at driving shaft ［ 13 ］ upper end cover tube bottom shock mount ［ 17 ］.
Upper plate ［ 9 ］ and lower plate ［ 7 ］, mounting shock absorber ［ 8,5,19 ］ between lower plate ［ 7 ］, motor ［ 6 ］ and the frame ［ 2 ］.Frame ［ 2 ］ is to make motor and drive part that the all-in-one-piece connector is installed, and suitable bottom damper ［ 1 ］ also will be installed in frame ［ 2 ］ bottom.
As required, root diameter can be at the different shape of φ 150-450 millimeter, and the highest use rotating speed is got one group of number in 3000-10000 rev/min of scope.
Advantage of the present invention is: it has off-axis insurance institution; be rotor in rotation in case when property axle or pin are disconnected, still rotation and do not leave former installation site on axle sleeve of rotor, at this moment power is cut off under the effect of centrifuge overspeed protection circuit; in the stall gradually of frictional force effect lower rotor part, fool proof.This machine is owing to having designed the performance that discrete self-centering driving shaft has strengthened opposing dress sample amount of unbalance.Drive above-mentioned driving shaft with the upside-down mounting motor by driving belt, realized novel desk centrifuge.This machine is particularly suitable for daily chemical examination operation in the laboratory of hospital except that common laboratory is used, at this moment the centrifuge operator needn't too note adorning the sample balance, improves the chemical examination work efficiency.
Description of drawings
Fig. 1. the centrifuge embodiment schematic diagram that the present invention proposes.Wherein,
1. bottom damper, 2. frame,
3. motor pulley, 4. driving belt,
5. damper, 6. motor,
7. lower plate, 8. damper,
9. upper plate, 10. belt pulley,
11. ball bearing, 12. splicing sleeves,
13. driving shaft, 14. flexible axles,
15. steel ball, 16. pins,
17. spring, 18. rotors,
19. damper.
Fig. 2. driving shaft.Wherein,
20. blind hole, 21. grooves.
Fig. 3. the sleeve part A-A profile of driving shaft.
Fig. 4. off-axis insurance institution.Wherein,
22. axle sleeve, 23. lower bearings,
24. abutment sleeve, 25. upper bearing (metal)s.
Centrifuge embodiment proposed by the invention as shown in Figure 1.It comprises motor ［ 6 ］, driving belt ［ 4 ］, driving shaft unit, off-axis insurance institution ［ 22,14,15,16,17,12,9 ］, rotor ［ 18 ］, frame ［ 2 ］ and some dampers ［ 1,5,8,19 ］ etc.
Inverted motor ［ 6 ］ axle head fixed electrical machinery belt pulley ［ 3 ］, motor ［ 6 ］ are fixed on the frame ［ 2 ］, and suitable damper ［ 5 ］ can be installed therebetween.
The driving shaft unit comprises driving shaft ［ 13 ］, ball bearing ［ 11 ］, lower plate ［ 7 ］, belt pulley ［ 10 ］ and damper ［ 19 ］.
Driving shaft ［ 13 ］ is the thick slightly Cylinder in upper end, and thick slightly upper end is a sleeve, its central authorities have mouth up blind hole ［ 20 ］ and be with a translot ［ 21 ］.Fix two ball bearings ［ 11 ］ on Cylinder, the inner ring of driving shaft ［ 13 ］ when rotation ball bearing ［ 11 ］ rotates, and the outer ring of ball bearing ［ 11 ］ is fixed in lower plate ［ 7 ］ medium pore and does not rotate.
Lower plate ［ 7 ］ has the garden of boss to coil in the middle of being, central authorities have through hole that two ball bearings ［ 11 ］ are installed.Lower plate ［ 7 ］ is fixed on the frame ［ 2 ］, available therebetween suitable several dampers ［ 19 ］.Driving belt ［ 4 ］ is enclosed within on two belt pulleys ［ 3,10 ］, and rotatablely moving of motor ［ 6 ］ is delivered on the driving shaft ［ 13 ］.Its gearratio suitably selects the diameter of two belt pulleys ［ 3,10 ］ to decide as required.
Off-axis insurance institution comprises spring ［ 17 ］, steel ball ［ 15 ］, pin ［ 16 ］, flexible axle ［ 14 ］, axle sleeve ［ 22 ］, upper bearing (metal) ［ 25 ］, abutment sleeve ［ 24 ］, lower bearing ［ 23 ］, splicing sleeve ［ 12 ］, upper plate ［ 9 ］ and damper ［ 8 ］.
Spring ［ 17 ］ can be a helical spring, places driving shaft ［ 13 ］ upper end central blind hole ［ 20 ］, and steel ball ［ 15 ］ bottom is close in spring ［ 17 ］ upper end.The all sizes in the outer garden of spring ［ 17 ］ are slightly smaller than blind hole ［ 20 ］ internal diameter.
Steel ball ［ 15 ］ places central blind hole ［ 20 ］ top, driving shaft ［ 13 ］ upper end, and steel ball ［ 15 ］ external diameter is slightly smaller than blind hole ［ 20 ］ internal diameter.Steel ball ［ 15 ］ vertically central authorities has central through hole, inserts flexible axle ［ 14 ］ lower end.
Pin ［ 16 ］ passes steel ball ［ 15 ］ and flexible axle ［ 14 ］, and has more the sleeve groove ［ 21 ］ that a segment length is put into driving shaft ［ 13 ］ in steel ball ［ 15 ］ both sides.
Flexible axle ［ 14 ］ is a major axis, and the lower end has a pin-and-hole to insert pin ［ 16 ］, and upper end and axle sleeve ［ 22 ］ upper end centre bore is fixedly connected.The flexible axle diameter is 5 millimeters of φ 2-φ, is about 100 millimeters.
Axle sleeve ［ 22 ］ is the cover tubular, and its profile is the combination of Cylinder and cone, and the former the long latter is short.Cone is in the bottom, and its tapering is consistent with the garden conical surface in rotor ［ 18 ］ central lower.Axle sleeve ［ 22 ］ inside is big-diameter blind hole, mouth down, in load onto the outer ring of outer ring, abutment sleeve ［ 24 ］ and the lower bearing ［ 23 ］ of bearing ［ 25 ］.There is the centre bore flexible axle ［ 14 ］ that is fixedly connected in sleeve ［ 22 ］ upper end central authorities.
Splicing sleeve ［ 12 ］ is the combination of two sleeves.Upper bush is elongated, and lower sleeve is short and thick.The upper bush endoporus wherein passes flexible axle ［ 14 ］ greater than flexible axle 0.5-3 millimeter.The upper bush outside is each fixing inner ring of upper bearing (metal) ［ 25 ］ and lower bearing ［ 23 ］ up and down.Therefore, axle sleeve ［ 22 ］ and splicing sleeve ［ 12 ］ are realized connecting with inner ring by the outer ring of metal (upper ［ 25,23 ］.The mouth sleeve part up of the mid-driving shaft of mouth ［ 13 ］ of the lower sleeve of mouth down is spaced apart the 1-10 millimeter between the two.The lower sleeve center upper portion has small through hole, is that the endoporus of the upper bush of splicing sleeve ［ 12 ］ extends.
Abutment sleeve ［ 24 ］ connects with lower bearing ［ 23 ］ upper surface, outer ring with upper bearing (metal) ［ 25 ］ lower surface, outer ring in axle sleeve ［ 22 ］ sleeve, limits the installation site between these two bearings.
Upper bearing (metal) ［ 25 ］ connects with splicing sleeve upper bush periphery with lower bearing ［ 23 ］ inner ring, and upper bearing (metal) ［ 25 ］ connects with axle sleeve ［ 22 ］ the inside with lower bearing ［ 23 ］ outer ring.
Upper plate ［ 9 ］ is a ring flange, and there is through hole in central authorities.Connect splicing sleeve ［ 12 ］ on center through hole top.Upper plate ［ 9 ］ connects with lower plate ［ 7 ］ by damper ［ 8 ］.Lower plate ［ 7 ］ is following to be connected with frame ［ 2 ］ by damper ［ 19 ］.
Rotor ［ 18 ］ lower end is porose, and its shape is consistent with the corresponding site of axle sleeve to be that tapering connects with axle sleeve.Rotor has aluminium alloy system angle rotor, and 230 millimeters of external diameter φ can adorn 8 test tubes, every test tube 50 ml solns, and maximum speed is 6000 rev/mins.Also have steel to get rid of the son of flatting turn, 4 are hung cup, and 250 milliliters every glass, 3200 rev/mins of maximum speeds.Damper ［ 5,8,19,1 ］ is looked actual needs can be with suitable several.
In the centrifuge that the present invention proposes, the transmission that rotatablely moves is as follows: motor ［ 6 ］ drives motor pulley ［ 3 ］ rotation, through driving belt ［ 4 ］ rotating pulley ［ 10 ］, and driving shaft ［ 13 ］ rotation.It stirs the pin ［ 16 ］ in driving shaft ［ 13 ］ upper slot ［ 21 ］, and then drives flexible axle ［ 14 ］ rotation.The rotation that becomes one of flexible axle ［ 14 ］ and axle sleeve ［ 22 ］, the rotor of at this moment laying on axle sleeve ［ 22 ］ ［ 18 ］ also rotates.In the rotation, upper bearing (metal) ［ 25 ］ rotates with the outer ring of lower bearing ［ 23 ］, and inner ring and splicing sleeve are fixedly connected, and do not rotate.
Claims (4)
1, comprises the desk centrifuge of the tool off-axis insurance of motor, driving belt, driving shaft and rotor, it is characterized in that comprising off-axis insurance institution and driving shaft unit; Described off-axis insurance institution comprises axle sleeve [22], around property axle unit and splicing sleeve [12] and upper plate [9], axle sleeve [22] is fixedly connected around the property axle unit with described, axle sleeve [22] is connected with splicing sleeve [12] by bearing [23,25], and splicing sleeve [12] is fixed on upper plate [9] above the central authorities; Described driving shaft unit be comprise the upper end have sleeve driving shaft [13], ball bearing [11], lower plate [7], belt pulley [10] and damper [19] with the no direct coupled discrete mechanism of motor [6], described driving shaft [13] upper end is by bearing [11], lower plate [7], damper [19] links with frame [2], and the lower end links by belt pulley [10] and driving belt [4]; Off-axis insurance institution is by linking around property axle unit and driving shaft unit.
2, according to the centrifuge of claim 1 art, it is characterized in that describedly comprising around property axle ［ 14 ］, steel ball ［ 15 ］, pin ［ 16 ］ and spring ［ 17 ］ around the property axle unit, insert in steel ball ［ 15 ］ centre bore around property axle ［ 14 ］ lower end, one pin ［ 16 ］ crosses these two parts and is integral, and the pin ［ 16 ］ that stretch out on steel ball ［ 15 ］ both sides inserts in the groove ［ 21 ］ of driving shaft ［ 13 ］ upper sleeve.
3, centrifuge according to claim 1, it is characterized in that described lower plate ［ 7 ］ has the garden of convex to coil in the middle of being, central authorities have through hole that two ball bearings ［ 11 ］ are installed, and driving shaft ［ 13 ］ is installed therein, and lower plate ［ 7 ］ links by damper ［ 19 ］ and frame ［ 2 ］.
4, centrifuge according to claim 1 is characterized in that motor ［ 6 ］ is inverted, connects motor pulley ［ 3 ］ on motor ［ 6 ］ main shaft and is connected with driving belt ［ 4 ］.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89213858U CN2053947U (en) | 1989-07-13 | 1989-07-13 | Table type centrifuger with broken shaft protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89213858U CN2053947U (en) | 1989-07-13 | 1989-07-13 | Table type centrifuger with broken shaft protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2053947U true CN2053947U (en) | 1990-03-07 |
Family
ID=4869743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89213858U Withdrawn CN2053947U (en) | 1989-07-13 | 1989-07-13 | Table type centrifuger with broken shaft protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2053947U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105772234A (en) * | 2016-04-19 | 2016-07-20 | 中国科学院理化技术研究所 | Self-aligning protection device for rotor of large centrifugal equipment |
-
1989
- 1989-07-13 CN CN89213858U patent/CN2053947U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105772234A (en) * | 2016-04-19 | 2016-07-20 | 中国科学院理化技术研究所 | Self-aligning protection device for rotor of large centrifugal equipment |
| CN105772234B (en) * | 2016-04-19 | 2018-05-08 | 中国科学院理化技术研究所 | A kind of large centrifugal equipment rotor Self-aligning protective device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1061421C (en) | Weight compensating method and apparatus | |
| CN1094861C (en) | Motorcycle with hybrid drive system | |
| KR101237040B1 (en) | Device for guiding a shaft in an oscillating movement | |
| CN1835827A (en) | Speed reducer for industrial robot | |
| CN1707010A (en) | Drum type washing machine and drum therefor | |
| CN1089721C (en) | Elevator | |
| CN100351544C (en) | Electromagnetic buffer | |
| CN1150610A (en) | Washing machine with balancing device | |
| CN2663720Y (en) | Transmission shaft for portable working machine | |
| CN1267199C (en) | Centrifugal machine | |
| CN1197756C (en) | Elevator device | |
| CN1301929A (en) | Lubricating oil supply device for stepless speed changer | |
| CN1921961A (en) | Laying head with a vibration damping device | |
| CN2053947U (en) | Table type centrifuger with broken shaft protector | |
| NZ574969A (en) | Screw centrifuge having a rotor with a drum where in the drum is supported by vertical spring elements | |
| US6068248A (en) | Power plant mounting bush | |
| CN1250971A (en) | Battery-changing generator for vehicle | |
| WO2022146085A1 (en) | Vehicle height adjustment device | |
| CN2652969Y (en) | Motor directly driver of sewing machine | |
| CN214101077U (en) | Damping driving mechanism | |
| CN2561873Y (en) | Low-noise concrete vibrating cylinder | |
| CN215655779U (en) | Shock absorption device of centrifugal machine | |
| CN2377033Y (en) | Pulley spring shock-absorbing device | |
| CN219816653U (en) | Multi-pipe buffer adaptive balance centrifugal equipment | |
| CN220794833U (en) | Vulcanized rubber static stiffness testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |