CN108927297A - A kind of laboratory centrifuge automatic balancing device and its control circuit - Google Patents
A kind of laboratory centrifuge automatic balancing device and its control circuit Download PDFInfo
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- CN108927297A CN108927297A CN201811043247.6A CN201811043247A CN108927297A CN 108927297 A CN108927297 A CN 108927297A CN 201811043247 A CN201811043247 A CN 201811043247A CN 108927297 A CN108927297 A CN 108927297A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
- B04B9/14—Balancing rotary bowls ; Schrappers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
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Abstract
The present invention relates to a kind of laboratory centrifuge automatic balancing device and its control circuits, belong to experiment instrument trim technical field, solve the technical issues of centrifuge trim process used in existing laboratory is complicated, trim precision is difficult to ensure.Solution are as follows: laboratory centrifuge automatic balancing device includes rotating disc, shaft, clump weight, AC driven motor and firm banking, and the rotor of AC driven motor is arranged vertically upwards in firm banking, and transformer is additionally provided in firm banking；Shaft is arranged vertically upwards in the top of AC driven motor rotor, and rotating disc is set to the top of shaft sleeve；Its control circuit includes single-chip microcontroller, clock circuit, reset circuit and counterweight motor circuit.The present invention can be generally applicable to low, high, ultracentrifuge various velocity modes and can automatic balancing device within certain limits, it is effectively reduced the trim time, improves trim precision, reduce centrifuge using the occurrence risk of accident and extend centrifuge service life.
Description
Technical field
The invention belongs to test instrument trim technical field, in particular to a kind of laboratory centrifuge automatic balancing device and
Its control circuit.
Background technique
Laboratory centrifuge refers to that the logical excessive speeds often used in the lab generate centrifugal force, by different material point
Sub different molecular the characteristic such as molecule or particle volume having, quality etc., so that in solidliquid mixture or liquid mixture
The equipment that is separated from each other of different constituents.Since the state, density, granular size of different material in mixture are different, respectively
The position that component is assembled in centrifuge container after being acted on by centrifugal force is different, if solid particle deposits in suspension, cream
Layering etc. occurs for the fluid molecule of different densities in turbid, to play the role of the different sample components of separation.Laboratory at present
It is widely used in experiment, the research work in the fields such as biochemistry, microbiology, immunology, ecsomatics, science of heredity with centrifuge
In work.Accurate, the safe trim of centrifuge at present is to guarantee an important factor for centrifuge works normally, the trim of traditional experiment room
There is still a need for operators for device by manually adding the completion trim work of trim centrifuge tube, and operation is relatively inconvenient, and matches automatically
Flat centrifuge then can simplify the use step of centrifuge, the operation of more convenient experimenter.
In short, that there are disadvantages is as follows for centrifuge used in existing laboratory: 1: traditional centrifuge is carrying out centrifugation behaviour
Happened occasionally when making by the situation that centre-of gravity shift causes centrifuge unbalance, be centrifuged it is unbalance not only result in centrifuge inner rotator with
The collision of external shell, and then huge sound is issued, also the service life of centrifuge can be caused to seriously affect.Therefore, traditional
Centrifuge needs manually to carry out before activation the adjustment of centrifuge tube position or liquid amount, this process is relatively complicated, wastes time.2:
In order to make two centrifuge tube trims as far as possible opposite in centrifuge, need to before carrying out centrifugally operated with electronic balance to institute's trim
Centrifuge tube is weighed, and improperly part need to manually carry out liquid feeding or liquid is taken to adjust proportion, can lead to due to misoperation and nothing
The complete trim of method and caused by experimental error the problems such as.
Summary of the invention
In order to overcome the shortcomings of the prior art, the present invention provide it is a kind of be generally applicable to it is low, high, ultracentrifuge
Various velocity modes and can in the interior automatic balancing device of certain limit (20g) and its control circuit, be effectively reduced the trim time,
Trim precision is improved, reduce centrifuge using the generation of accident and extends centrifuge service life.
The present invention is achieved by the following technical programs.
A kind of laboratory centrifuge automatic balancing device, it include rotating disc, shaft, clump weight, AC driven motor and
Firm banking, in which: the rotor of the AC driven motor is arranged vertically upwards in firm banking, is also set up in firm banking
There is transformer；
The shaft is arranged vertically upwards in the top of AC driven motor rotor, and the rotor of shaft and AC driven motor passes through
Shaft coupling connection, the shaft includes upper section shaft and lower section shaft, and connection bullet is provided between upper section shaft and lower section shaft
The axis direction of spring, upper section shaft generates elastic deflection relative to the axis direction of lower section shaft, and the outside of shaft, which is provided with, to be turned
The lower end surface of shaft sleeve, shaft sleeve is fixedly connected with lower section shaft, between the top of upper section shaft and the inner wall of shaft sleeve
It is provided with precision spring, lower precision spring, several precisions are provided between the lower part of upper section shaft and the inner wall of shaft sleeve
One end of spring is evenly arranged along the circumferencial direction of shaft, and the other end of precision spring is fixedly connected with shaft sleeve；Described
The top of firm banking is simultaneously provided with shaft sleeve, the lower part of the lower section shaft and shaft sleeve positioned at the outside of shaft sleeve
Inner wall between be provided with multipassage rotary conducting ring, the multipassage rotary conducting ring includes slip ring and conductive outer sliding in conduction
Ring, slip ring is fixed at the lower part of lower section shaft in the conduction, the outer slip ring of conduction with it is conductive in slip ring position it is opposite
It is set on the inner wall of shaft sleeve with answering, is from top to bottom disposed in two groups of motor controls on slip ring lateral wall in conduction
Brush in brush and two groups of power supply lines is provided on the inner wall of conductive outer slip ring with brush position corresponding position in two groups of motor controls
Two groups of motor control outer bruss, be provided with brush position corresponding position in two groups of power supply lines on the inner wall of conductive outer slip ring two groups it is electric
Source line outer bruss；
The rotating disc is set to the top of shaft sleeve, and the edge of rotating disc upper surface is evenly arranged along rotating disc circumferencial direction
There are several centrifuge tube merging chambers, the center portion of rotating disc is provided with single-chip microcontroller, and the upper surface of shaft is fixedly connected with rotating disc, rotation
Linked switch is provided between disk lower end surface and shaft；The upper surface of rotating disc is evenly distributed in the circumferential direction several sliding slots,
The clump weight is set in sliding slot, and the lower surface of clump weight is provided with rack gear, and counterweight motor is provided with below clump weight, is matched
The gear being meshed with rack gear is provided on the rotor of weight motor；
Two groups of power supply line outer bruss on the outer slip ring of conduction after conductor in parallel with transformer by being electrically connected, and the one of transformer
End is electrically connected by conducting wire with AC power source, and the other end of transformer is grounded by zero firewire, two on the outer slip ring of conduction
The signal input part of group motor control outer bruss is electrically connected with the signal output end of single-chip microcontroller, the letter of two groups of motor control outer bruss
Number output end is electrically connected with the signal input part of AC driven motor；The signal output end of the linked switch and the letter of single-chip microcontroller
The electrical connection of number input terminal, the signal output end of single-chip microcontroller are electrically connected with the signal input part of counterweight motor.
Further, the linked switch includes that conductive hairbrush, conductive bar, fixed arm and conductive pin, conductive pin are set to
For upper precision spring at 1/4 position of shaft sleeve side, conductive hairbrush is installed on the lower section of conductive bar, and conductive bar is set to
The top of upper precision spring is simultaneously installed in upper precision spring by fixed arm, and the outer end of conductive bar is outer with upper precision spring
End electrical connection.
Further, institute's acute angle angle between the axis direction of the centrifuge tube merging chamber and the axis direction of shaft
It is 60 degree.
A kind of control circuit of laboratory centrifuge automatic balancing device, the control circuit include single-chip microcontroller, clock electricity
Road, reset circuit and counterweight motor circuit；
The port P0, P1, P2, P3 of single-chip microcontroller is universal input/output parallel port, in which:
P0.0 pin and P0.1 pin are respectively and for prompting the counterweight motor positive and inverse of operator's counterweight electric machine operation state aobvious
Show that device is electrically connected, P0.0 pin rotates forward display lamp with D1 and is electrically connected, and P0.1 pin is electrically connected with D2 reverse display lamp；
P1.0 is electrically connected to P1.3 pin with the counterweight motor circuit, and counterweight motor circuit includes U2 counterweight motor driven mould
Block, U3 counterweight motor drive module and U4 counterweight motor drive module, U2 counterweight motor drive module, U3 counterweight motor driven mould
Block and U4 counterweight motor drive module are electrically connected with counterweight motor respectively, U2 counterweight motor drive module and corresponding counterweight motor
Be provided with D4 indicator light, D5 indicator light, D6 indicator light and D7 indicator light on the conducting wire of connection, U3 counterweight motor drive module with it is right
D8 indicator light, D9 indicator light, D10 indicator light and D11 indicator light, U4 counterweight electricity are provided on the conducting wire for the counterweight motor connection answered
Be provided on the conducting wire that machine drive module is connected with corresponding counterweight motor D12 indicator light, D13 indicator light, D14 indicator light and
D15 indicator light, D4 indicator light successively lights from left to right to D15 indicator light when the counterweight motor rotates forward, counterweight motor reversal
When D4 indicator light successively lighted from right to left to D15 indicator light；
P2.0 to P2.3 pin with control master control centrifuge module be electrically connected, master control centrifuge module by conducting wire with exchange drive
Motor electrical connection, be provided on the conducting wire that master control centrifuge module is connect with AC driven motor D16 indicator light, D17 indicator light,
D18 indicator light and D19 indicator light；
P3.0 is connect to P3.2 pin with electric motor starting turn knob K1；
Reset circuit: in the reset circuit, one end of conducting wire is electrically connected with the RST reset pin of single-chip microcontroller, reset circuit
The other end of conducting wire and single-chip microcontrollerPin is electrically connected, and is equipped with C3 electrolytic capacitor between the conducting wire at reset circuit both ends；
Reset switch and R0 resistance, the 5V feeder ear company of C3 electrolytic capacitor one end and single-chip microcontroller are also equipped in the reset circuit
It connects；
Clock circuit: in the clock circuit, one end of conducting wire is electrically connected with the XTAL1 pin of single-chip microcontroller, conducting wire it is another
End is electrically connected with the XTAL2 pin of single-chip microcontroller, is equipped with C1 capacitor on the conducting wire of XTAL1 pin side, close
C2 capacitor is installed on the conducting wire of XTAL2 pin side, the conducting wire close to XTAL1 pin side draws with close to XTAL2
X1 crystal oscillator is provided between the conducting wire of foot side, the GND of the other end and single-chip microcontroller of C1 capacitor and C2 capacitor draws
Foot electrical connection.
Further, the single-chip microcontrollerPin is for accessing program storage control signal, wherein " 0 " indicates: only visiting
Ask external program reservoir, " 1 " indicates: accessing since internal processes reservoir, and can extend to external program reservoir.It wants
Work normally SCM system, palpus willHigh level is connect, reads and executes monolithic function by internal program is downloaded to.
Further, it is additionally provided on the single-chip microcontroller for being connect with external ROM read strobe signalPin and
ALE pin for being connect with address latch control signal.
Further, the model MCS-51 type single-chip microcontroller of the single-chip microcontroller.
Compared with prior art the invention has the benefit that
1. saving time and manpower using the test phase of a period of time after booting come automatic trim.
2. realize trim by the miniature deformation of three precision springs of low speed test phase, with the movement of counter weight strip come
Make up the nuance that rotating disc all directions are improved quality.By main shaft orientation in main shaft chamber center of gravity, the accuracy with height.
Detailed description of the invention
Fig. 1 is the whole schematic diagram of main cross-sectional structure of the present invention.
Fig. 2 is the overlooking structure diagram of Fig. 1.
Fig. 3 is linked switch part partial enlargement structural representation in Fig. 1.
Fig. 4 is multipassage rotary conducting ring partial assembled enlarged structure schematic diagram.
Fig. 5 is control circuit circuit diagram.
Fig. 6 is single-chip microcontroller local amplification circuit figure in Fig. 5.
Fig. 7 is counterweight motor positive and inverse display local amplification circuit diagram in Fig. 5.
Fig. 8 is counterweight motor circuit local amplification circuit figure in Fig. 5.
Fig. 9 is that master control centrifuge module local amplification circuit figure is controlled in Fig. 5.
Figure 10 is clock circuit and reset circuit local amplification circuit figure in Fig. 5.
Figure 11 is that K1 rotates forward button local amplification circuit figure in Fig. 5.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
A kind of laboratory centrifuge automatic balancing device as shown in Figures 1 to 4, it includes rotating disc 1.2, shaft
1.13, clump weight 1.4, AC driven motor 1.19 and firm banking 1.14, in which: the rotor of the AC driven motor 1.19
It is arranged vertically upwards in firm banking 1.14, transformer 1.15 is additionally provided in firm banking；
The shaft 1.13 is arranged vertically upwards in the top of 1.19 rotor of AC driven motor, shaft 1.13 with exchange driving electricity
The rotor of machine 1.19 is connected by shaft coupling 1.18, and the shaft 1.13 includes upper section shaft 1.13.1 and lower section shaft
1.13.2, connecting spring 1.12 is provided between upper section shaft 1.13.1 and lower section shaft 1.13.2, upper section shaft 1.13.1's
Axis direction generates elastic deflection relative to the axis direction of lower section shaft 1.13.2, and the outside of shaft 1.13 is provided with shaft set
Cylinder 1.10, the lower end surface of shaft sleeve 1.10 is fixedly connected with lower section shaft 1.13.2, the top of upper section shaft 1.13.1 with turn
Precision spring 1.8, lower part and the shaft sleeve 1.10 of upper section shaft 1.13.1 are provided between the inner wall of shaft sleeve 1.10
Lower precision spring 1.12 is provided between inner wall, one end of several precision springs is evenly arranged along the circumferencial direction of shaft 1.13,
The other end of precision spring is fixedly connected with shaft sleeve 1.10；The firm banking 1.14 top and be located at shaft sleeve
1.10 outside is provided with shaft sleeve 1.9, sets between the lower part of the lower section shaft 1.13.2 and the inner wall of shaft sleeve 1.9
It is equipped with multipassage rotary conducting ring, the multipassage rotary conducting ring includes slip ring 1.17 and conductive outer slip ring 1.16 in conduction,
Slip ring 1.17 is fixed at the lower part of lower section shaft 1.13.2 in the conduction, slides in the outer slip ring 1.16 of conduction and conduction
1.17 position of ring is correspondingly set on the inner wall of shaft sleeve 1.9, in conduction on 1.17 lateral wall of slip ring from top to bottom according to
It is secondary to be provided in two groups of motor controls brush 1.17.2 in brush 1.17.1 and two groups of power supply lines, the inner wall of conductive outer slip ring 1.16
It is upper that the position brush 1.17.1 corresponding position in two groups of motor controls is provided with two groups of motor control outer bruss 1.16.1, it is conductive outer sliding
The position brush 1.17.2 corresponding position in two groups of power supply lines is provided with two groups of power supply line outer bruss 1.16.2 on the inner wall of ring 1.16；
The rotating disc 1.2 is set to the top of shaft sleeve 1.9, and the edge of 1.2 upper surface of rotating disc is along 1.2 circumference of rotating disc
Direction has been evenly arranged several centrifuge tubes merging chambers 1.3, and the center portion of rotating disc 1.2 is provided with single-chip microcontroller 1.1, shaft 1.13 it is upper
End face is fixedly connected with rotating disc 1.2, is provided with linked switch 1.6 between 1.2 lower end surface of rotating disc and shaft 1.13；Rotating disc
1.2 upper surface is evenly distributed in the circumferential direction several sliding slots, and the clump weight 1.4 is set in sliding slot, clump weight 1.4
Lower surface is provided with rack gear, and counterweight motor 1.5 is provided with below clump weight, is provided on the rotor of counterweight motor 1.5 and tooth
The gear that item is meshed；
Two groups of power supply line outer bruss 1.16.2 on the outer slip ring 1.16 of conduction pass through electric with transformer 1.15 after conductor in parallel
One end of connection, transformer 1.15 is electrically connected by conducting wire with AC power source, and the other end of transformer 1.15 is connect by zero firewire
Ground, the signal input part of two groups of motor control outer bruss on the outer slip ring 1.16 of conduction and the signal of single-chip microcontroller 1.1 export
End electrical connection, the signal output end of two groups of motor control outer bruss 1.16.1 and the signal input part electricity of AC driven motor 1.19
Connection；The signal output end of the linked switch 1.6 is electrically connected with the signal input part of single-chip microcontroller 1.1, the signal of single-chip microcontroller 1.1
Output end is electrically connected with the signal input part of counterweight motor 1.5.
Further, the linked switch 1.6 include conductive hairbrush 1.6.4, conductive bar 1.6.1, fixed arm 1.16.2 and
Conductive pin 1.7, conductive pin 1.7 are set to precision spring 1.13.1 at 1/4 position of 1.10 side of shaft sleeve, conductive
Hairbrush 1.6.4 is installed on the lower section of conductive bar 1.6.1, and conductive bar 1.6.1 is set to the top of precision spring 1.13.1 and leads to
It crosses fixed arm 1.16.2 to be installed on precision spring 1.13.1, the outer end of conductive bar 1.6.1 and upper precision spring 1.13.1
Outer end electrical connection.
Further, it is between the axis direction of the centrifuge tube merging chamber 1.3 and the axis direction of shaft 1.13
Acute angle is 60 degree.
A kind of control circuit of laboratory centrifuge automatic balancing device, the control circuit as shown in Fig. 5 to Figure 11
Including single-chip microcontroller 1.1, reset circuit, clock circuit and counterweight motor circuit；
The port P0, P1, P2, P3 of single-chip microcontroller 1.1 is universal input/output parallel port, in which:
P0.0 pin and P0.1 pin are respectively and for prompting the counterweight motor positive and inverse of 1.5 working condition of operator's counterweight motor
Display electrical connection, P0.0 pin rotate forward display lamp with D1 and are electrically connected, and P0.1 pin is electrically connected with D2 reverse display lamp；
P1.0 is electrically connected to P1.3 pin with the counterweight motor circuit, and counterweight motor circuit includes U2 counterweight motor driven mould
Block, U3 counterweight motor drive module and U4 counterweight motor drive module, U2 counterweight motor drive module, U3 counterweight motor driven mould
Block and U4 counterweight motor drive module are electrically connected with counterweight motor 1.5 respectively, U2 counterweight motor drive module and corresponding counterweight
D4 indicator light, D5 indicator light, D6 indicator light and D7 indicator light, U3 counterweight motor drive module are provided on the conducting wire of motor connection
Match with D8 indicator light, D9 indicator light, D10 indicator light and D11 indicator light, U4 is provided on the conducting wire of corresponding counterweight motor connection
D12 indicator light, D13 indicator light, D14 indicator light are provided on the conducting wire that weight motor drive module is connected with corresponding counterweight motor
With D15 indicator light, D4 indicator light successively lights from left to right to D15 indicator light when the counterweight motor 1.5 rotates forward, counterweight motor
D4 indicator light successively lights from right to left to D15 indicator light when 1.5 reversion；
P2.0 to P2.3 pin with control master control centrifuge module be electrically connected, master control centrifuge module by conducting wire with exchange drive
Motor 1.19 is electrically connected, be provided on the conducting wire that master control centrifuge module is connect with AC driven motor 1.19 D16 indicator light,
D17 indicator light, D18 indicator light and D19 indicator light；
P3.0 is connect to P3.2 pin with electric motor starting turn knob K1；
Reset circuit: in the reset circuit, one end of conducting wire is electrically connected with the RST reset pin of single-chip microcontroller 1.1, resets electricity
The other end of line conductor and single-chip microcontroller 1.1Pin is electrically connected, and C3 electrolysis electricity is equipped between the conducting wire at reset circuit both ends
Container；Reset switch and R0 resistance, the 5V power supply of C3 electrolytic capacitor one end and single-chip microcontroller are also equipped in the reset circuit
End connection；
Clock circuit: in the clock circuit, one end of conducting wire is electrically connected with the XTAL1 pin of single-chip microcontroller 1.1, conducting wire it is another
One end is electrically connected with the XTAL2 pin of single-chip microcontroller 1.1, is equipped with C1 capacitor on the conducting wire of XTAL1 pin side,
Close to XTAL2 pin side conducting wire on C2 capacitor is installed, close to XTAL1 pin side conducting wire with it is close
X1 crystal oscillator, the other end and single-chip microcontroller of C1 capacitor and C2 capacitor are provided between the conducting wire of XTAL2 pin side
1.1 GND pin electrical connection.
Further, the single-chip microcontroller 1.1Pin is for accessing program storage control signal, wherein " 0 " indicates: only
External program reservoir is accessed, " 1 " indicates: accessing since internal processes reservoir, and can extend to external program reservoir.
SCM system is worked normally, EA must be connect high level, reads and executes monolithic function by internal program is downloaded to.
Further, it is additionally provided on the single-chip microcontroller 1.1 for being connect with external ROM read strobe signalPin
With the ALE pin for being connect with address latch control signal.
Further, the model MCS-51 type single-chip microcontroller of the single-chip microcontroller 1.1.
Raw material and application method of the invention is as follows:
1, trim is adjusted: being illustrated by taking two centrifuge tubes as an example, is put into two centrifuge tubes, closes centrifuge cup.Power supply passes through
Transformer provides power supply for single-chip microcontroller, and MCS-51 single-chip microcontroller is triggered by high potential, and control centrifuge speed is 300rpm, timing ga(u)ge
Number device original start is 12s, and circuit starts timing after connecting, and centrifuge principal axis AC driven motor starts at this time." electricity is pressed again
Machine starts turn knob K1 " and starts trim, and linked switch is switched in centrifuge rotary course, and single-chip microcontroller controls counterweight motor
Trim maneuver is completed in work.In the centrifugal process of pivot, in the centrifuge tube of left and right material mass difference generate it is different from
Mental and physical efforts, shaft experiences direction and the size of centrifugal force difference, to perturb trend.The right centrifuge tube is heavier in this example,
Therefore axis moves right.
Upper precision spring is whole by shaft drawing to the right to move right because being connected directly with shaft, but upper precision
Spring distal end is fixed with centrifugal basket shaft sleeve, therefore precision spring moves right with shaft connected end, that is, precision spring proximal part
It is dynamic, drive linked switch conductive pin and conductive hairbrush to connect circuit where counterweight motor, i.e. linked switch is closed.Counterweight motor letter
Number line is connect with the end MCS-51 single-chip microcontroller P1, controls the rotation of a linkage gear, the occlusion of wheel and rack corresponding position.Circuit
After connection, single-chip microcontroller control counterweight motor is rotated forward, and rack drives clump weight is moved to the left, and changes right arm center of gravity to reach
Position balances the purpose of left and right centrifugal force.
2, be centrifuged: after the completion of trim is adjusted, shaft mobile trend disappears, and precision spring deformation restores, and drives linked switch
Conductive pin be returned to origin-location, it is that conductive pin leaves conduction brush that linked switch, which disconnects, MCS-51 singlechip interruption P1.0 ~
The signal of 1.3 pins controls 3 counterweight motors.Terminate within 12 seconds simultaneously, single-chip microcontroller loses to centrifuge AC driven motor
Control.Operator inputs egulation rotating speed and time, then presses START button, and the original circuit control centrifuge exchange of centrifuge is driven
The original revolving speed and time that dynamic motor is inputted according to operator continue centrifugal action.
Regulating system is made of precision spring, linked switch and 3 part of Weighting system, and totally 3 groups, each group is using shaft as axis phase
Mutual angle is in 120 degree.In centrifuge operational process, the difference of orientation where centrifuge tube such as centrifugal force if it exists, by right
Force resolution is closed, falls in resultant force on two neighboring centrifuge arm, the mesh of centrifuge safe handling is finally reached by above-mentioned adjusting
's.Clump weight position is not restored temporarily after centrifugation.MCS-51 single-chip microcontroller connects a reset circuit, and reset switch and centrifugation organ covered
Journey completes linkage, and before centrifuge is again started up, single-chip microcontroller controls counterweight motor reversal, and clump weight is made to return to home position, this
When press " electric motor starting turn knob K1 " again, carry out new trim task.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
It is familiar with those skilled in the art in the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of, should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (7)
1. a kind of laboratory centrifuge automatic balancing device, it include rotating disc (1.2), shaft (1.13), clump weight (1.4),
AC driven motor (1.19) and firm banking (1.14), it is characterised in that: the rotor of the AC driven motor (1.19) is perpendicular
It directly sets up in firm banking (1.14), transformer (1.15) is additionally provided in firm banking；
The shaft (1.13) is arranged vertically upwards in the top of AC driven motor (1.19) rotor, shaft (1.13) with exchange
The rotor of driving motor (1.19) by shaft coupling (1.18) connect, the shaft (1.13) include upper section shaft (1.13.1) and
Lower section shaft (1.13.2) is provided with connecting spring (1.12) between upper section shaft (1.13.1) and lower section shaft (1.13.2),
The axis direction of upper section shaft (1.13.1) generates elastic deflection, shaft relative to the axis direction of lower section shaft (1.13.2)
(1.13) outside is provided with shaft sleeve (1.10), and the lower end surface of shaft sleeve (1.10) and lower section shaft (1.13.2) are fixed
Connection, is provided with precision spring (1.8) between the top of upper section shaft (1.13.1) and the inner wall of shaft sleeve (1.10), on
Lower precision spring (1.12), several precisions are provided between the lower part of section shaft (1.13.1) and the inner wall of shaft sleeve (1.10)
Circumferencial direction of the one end of spring along shaft (1.13) is evenly arranged, and the other end of precision spring and shaft sleeve (1.10) are fixed
Connection；The firm banking (1.14) top and be located at shaft sleeve (1.10) outside be provided with shaft sleeve (1.9),
Multipassage rotary conducting ring, institute are provided between the lower part of the lower section shaft (1.13.2) and the inner wall of shaft sleeve (1.9)
Stating multipassage rotary conducting ring includes slip ring (1.17) and conductive outer slip ring (1.16) in conduction, slip ring (1.17) in the conduction
It is fixed at the lower part of lower section shaft (1.13.2), the outer slip ring of conduction (1.16) and slip ring (1.17) position phase in conduction
It is arranged in correspondence on the inner wall of shaft sleeve (1.9), is from top to bottom disposed on slip ring (1.17) lateral wall in conduction
Brush (1.17.2) in brush (1.17.1) and two groups of power supply lines in two groups of motor controls, on the inner wall of conductive outer slip ring (1.16)
Position corresponding position brush (1.17.1) in two groups of motor controls is provided with two groups of motor control outer bruss (1.16.1), it is conductive outer
Position corresponding position brush (1.17.2) in two groups of power supply lines is provided with two groups of power supply line outer bruss on the inner wall of slip ring (1.16)
(1.16.2)；
The rotating disc (1.2) is set to the top of shaft sleeve (1.9), and the edge of rotating disc (1.2) upper surface is along rotating disc
(1.2) circumferencial direction has been evenly arranged several centrifuge tube mergings chamber (1.3), and the core of rotating disc (1.2) is provided with single-chip microcontroller
(1.1), the upper surface of shaft (1.13) is fixedly connected with rotating disc (1.2), rotating disc (1.2) lower end surface and shaft (1.13) it
Between be provided with linked switch (1.6)；The upper surface of rotating disc (1.2) is evenly distributed in the circumferential direction several sliding slots, described to match
Pouring weight (1.4) is set in sliding slot, and the lower surface of clump weight (1.4) is provided with rack gear, and counterweight electricity is provided with below clump weight
Machine (1.5) is provided with the gear being meshed with rack gear on the rotor of counterweight motor (1.5)；
Two groups of power supply line outer bruss (1.16.2) on the outer slip ring of conduction (1.16) by after conductor in parallel with transformer
(1.15) it is electrically connected, one end of transformer (1.15) is electrically connected by conducting wire with AC power source, the other end of transformer (1.15)
It is grounded by zero firewire, the signal input part and single-chip microcontroller of two groups of motor control outer bruss on the outer slip ring of conduction (1.16)
(1.1) signal output end electrical connection, the signal output end and AC driven motor of two groups of motor control outer bruss (1.16.1)
(1.19) signal input part electrical connection；The signal output end of the linked switch (1.6) and the signal of single-chip microcontroller (1.1) input
End electrical connection, the signal output end of single-chip microcontroller (1.1) are electrically connected with the signal input part of counterweight motor (1.5).
2. a kind of laboratory centrifuge automatic balancing device according to claim 1, it is characterised in that: the linked switch
It (1.6) include conductive hairbrush (1.6.4), conductive bar (1.6.1), fixed arm (1.16.2) and conductive pin (1.7), conductive pin
(1.7) precision spring (1.13.1) is set at 1/4 position of shaft sleeve (1.10) side, conductive hairbrush
(1.6.4) is installed on the lower section of conductive bar (1.6.1), and conductive bar (1.6.1) is set to the top of precision spring (1.13.1)
And it is installed on precision spring (1.13.1) by fixed arm (1.16.2), the outer end of conductive bar (1.6.1) and upper precision
The outer end of spring (1.13.1) is electrically connected.
3. a kind of laboratory centrifuge automatic balancing device according to claim 1, it is characterised in that: the centrifuge tube is set
Entering institute's acute angle angle between the axis direction of chamber (1.3) and the axis direction of shaft (1.13) is 60 degree.
4. a kind of control circuit of laboratory centrifuge automatic balancing device as described in claim 1, it is characterised in that: described
Control circuit includes single-chip microcontroller (1.1), reset circuit, clock circuit and counterweight motor circuit；
The port P0, P1, P2, P3 of single-chip microcontroller (1.1) is universal input/output parallel port, in which:
P0.0 pin and P0.1 pin are respectively and for prompting the counterweight motor of operator's counterweight motor (1.5) working condition positive and negative
Turn display electrical connection, P0.0 pin rotates forward display lamp with D1 and is electrically connected, and P0.1 pin is electrically connected with D2 reverse display lamp；
P1.0 is electrically connected to P1.3 pin with the counterweight motor circuit, and counterweight motor circuit includes U2 counterweight motor driven mould
Block, U3 counterweight motor drive module and U4 counterweight motor drive module, U2 counterweight motor drive module, U3 counterweight motor driven mould
Block and U4 counterweight motor drive module are electrically connected with counterweight motor (1.5) respectively, and U2 counterweight motor drive module is matched with corresponding
D4 indicator light, D5 indicator light, D6 indicator light and D7 indicator light, U3 counterweight motor driven mould are provided on the conducting wire of weight motor connection
D8 indicator light, D9 indicator light, D10 indicator light and D11 indicator light, U4 are provided on the conducting wire that block is connected with corresponding counterweight motor
D12 indicator light, D13 indicator light, D14 instruction are provided on the conducting wire that counterweight motor drive module is connected with corresponding counterweight motor
Lamp and D15 indicator light, D4 indicator light successively lights from left to right to D15 indicator light when the counterweight motor (1.5) rotates forward, counterweight
D4 indicator light successively lights from right to left to D15 indicator light when motor (1.5) inverts；
P2.0 to P2.3 pin with control master control centrifuge module be electrically connected, master control centrifuge module by conducting wire with exchange drive
Motor (1.19) is electrically connected, and D16 instruction is provided on the conducting wire that master control centrifuge module is connect with AC driven motor (1.19)
Lamp, D17 indicator light, D18 indicator light and D19 indicator light；
P3.0 is connect to P3.2 pin with electric motor starting turn knob K1；
Reset circuit: in the reset circuit, one end of conducting wire is electrically connected with the RST reset pin of single-chip microcontroller (1.1), is resetted
The other end of circuit lead and single-chip microcontroller (1.1)Pin is electrically connected, and C3 electricity is equipped between the conducting wire at reset circuit both ends
Electrolysis condenser；Reset switch and R0 resistance, the 5V of C3 electrolytic capacitor one end and single-chip microcontroller are also equipped in the reset circuit
Feeder ear connection；
Clock circuit: in the clock circuit, one end of conducting wire is electrically connected with the XTAL1 pin of single-chip microcontroller (1.1), conducting wire
The other end is electrically connected with the XTAL2 pin of single-chip microcontroller (1.1), and C1 electricity is equipped on the conducting wire of XTAL1 pin side
Container, close to XTAL2 pin side conducting wire on C2 capacitor is installed, close to XTAL1 pin side conducting wire with lean on
X1 crystal oscillator, the other end and monolithic of C1 capacitor and C2 capacitor are provided between the conducting wire of nearly XTAL2 pin side
The GND pin of machine (1.1) is electrically connected.
5. a kind of control circuit of laboratory centrifuge automatic balancing device according to claim 4, it is characterised in that: institute
State single-chip microcontroller (1.1)Pin is for accessing program storage control signal, wherein " 0 " indicates: only accessing external program storage
Device, " 1 " indicate: accessing since internal processes reservoir, and can extend to external program reservoir.
6. a kind of control circuit of laboratory centrifuge automatic balancing device according to claim 4, it is characterised in that: institute
It states and is additionally provided on single-chip microcontroller (1.1) for connecting with external ROM read strobe signalIt pin and is used for and address latch
Control the ALE pin of signal connection.
7. a kind of control circuit of laboratory centrifuge automatic balancing device according to claim 4, it is characterised in that: institute
State the model MCS-51 type single-chip microcontroller of single-chip microcontroller (1.1).
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| CN201811043247.6A CN108927297B (en) | 2018-09-07 | 2018-09-07 | Automatic balancing device of laboratory centrifuge and control circuit thereof |
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| CN201811043247.6A CN108927297B (en) | 2018-09-07 | 2018-09-07 | Automatic balancing device of laboratory centrifuge and control circuit thereof |
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| CN108927297B CN108927297B (en) | 2023-12-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110170387A (en) * | 2019-06-05 | 2019-08-27 | 南京中船绿洲机器有限公司 | A kind of disc type separator rotary drum from shock absorbing |
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| CN108927297B (en) | 2023-12-22 |
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