CN2175039Y - Two-speed numerical controlled arrangement for centrifuge of horizontal threaded rod type - Google Patents
Two-speed numerical controlled arrangement for centrifuge of horizontal threaded rod type Download PDFInfo
- Publication number
- CN2175039Y CN2175039Y CN 93225515 CN93225515U CN2175039Y CN 2175039 Y CN2175039 Y CN 2175039Y CN 93225515 CN93225515 CN 93225515 CN 93225515 U CN93225515 U CN 93225515U CN 2175039 Y CN2175039 Y CN 2175039Y
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- speed
- centrifuge
- circuit
- chip microcomputer
- horizontal screw
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Abstract
The utility model discloses a two-speed numerical control device for a centrifuge of a horizontal threaded rod type, comprising a bowl speed measurement gear fixed to a bowl of the centrifuge and a screw speed measurement gear fixed to a screw of the centrifuge. A pair of electromagnetic transducers fastened to a casing of the centrifuge is respectively opposite to tooth crests of the two speed measurement gears. Signal transmission lines of the electromagnetic transducers are connected with a control display mechanism. The utility model has the advantages of selective-access display and automatic control of the operating mode of the centrifuge of a horizontal threaded rod type, easy use and reliable performance.
Description
The utility model relates to the centrifuge that is used to realize physics or chemical enginnering process, specifically, is a kind of control device that designs for centrifuge specially.
Existing mechanical driven type horizontal screw centrifuge, its two-way rotating speed (the poor rotating speed between rotating cylinder rotating speed and screw rod and the rotating cylinder) all is fixed in a kind of state, can not regulated at will, two-way rotating speed can only be the rated speed that designs in advance, does not also have actual speed to show.These existing horizontal screw centrifuges can't be controlled two-way rotating speed at any time, thereby the user is determined according to inlet amount and discharge situation and select the optimised process rotating speed for use.
The purpose of this utility model provides a kind of speed-regulating type horizontal screw centrifuge double speed numerical control device that can show at random and control the running status of adjusting type horizontal screw centrifuge automatically.
Technical solution of the present utility model is: a kind of speed-regulating type horizontal screw centrifuge double speed numerical control device, the difference of itself and prior art is: comprise the rotating cylinder measure speed gears that is fixed on the horizontal screw centrifuge rotating cylinder, and be fixed on the screw rod measure speed gears on the horizontal screw centrifuge screw rod; A pair ofly be fixed in electromagnetic sensor on the centrifuge shell tooth top with above-mentioned two measure speed gearses is relative respectively, two signal transmssion lines of electromagnetic sensor link to each other with a control indication mechanism.
There is 0.5-1.5 millimeter gap electromagnetic sensor end in the utility model with the tooth speed gear tip clearance that tests the speed.Certainly, also can adopt other suitable gap numerical value, or adopt other contact forms.
Control indication mechanism in the utility model, comprise two groups of amplification and rectification circuits that receive the aforementioned electromagnetic sensor signal, the amplification and rectification circuit output signal is sent into a single-chip microcomputer and is handled behind counter, the single-chip microcomputer output signal is shown by display after the decoding of font display decoder, single-chip microcomputer also output signal makes an output control circuit job, single-chip microcomputer also is connected to the rotational speed regulation parameter and sets input circuit, and a power circuit provides required power supply for foregoing circuit.Certainly, the control indication mechanism also can adopt other suitable circuit structure forms.
Rotational speed regulation parameter in the utility model is set input circuit, comprises one group and the direct-connected dial initialization circuit of single-chip microcomputer, and single-chip microcomputer also is connected with the dial initialization circuit through a decoder.Certainly, the rotational speed regulation parameter is set input circuit and also can be adopted other suitable circuit structure forms.
Output control circuit of the present utility model is made up of relay and subsidiary component.Certainly, also can select other suitable circuit structure forms for use.
The utility model has the advantages that: can demonstrate poor rotating speed between centrifugal basket and screw rod and the rotating cylinder at random intuitively by speed probe and digital display, and can be under the state of inlet amount change and discharge load variations, move with the difference rotating speed by setting rotating speed, and reach the purpose of automatic control.Easy to use, dependable performance all can be suitable for other device that need carry out rotating speed demonstration and control.
The utility model is described in further detail below in conjunction with drawings and Examples:
Fig. 1 is the structural representation of a kind of speed-regulating type horizontal screw centrifuge double speed numerical control device of the present utility model.
Fig. 2 is the circuit structure diagram in the control indication mechanism that the utility model adopted.
Fig. 1 has described an embodiment of the present utility model.The rotating cylinder 4 of speed-regulating type horizontal screw centrifuge and screw rod 5 are done the stepless speed regulation operation by the power drive of fluid power transmission system, the rotating speed of its rotating cylinder 4 and screw rod 5 can be synchronous rotation, also can produce poor rotating speed and can regulate, the rotating cylinder measure speed gears 6(gear that is fixed on rotating cylinder 4 one ends is 60 teeth) and the screw rod measure speed gears 7(gear that is fixed on screw rod 5 one ends also be 60 teeth), also and then rotating cylinder 4 and screw rod 5 rotate, because the electromagnetic sensor 1 of two correspondences is fixed in centrifuge shell transfixion, and respectively with two measure speed gearses 6,7 tip clearances have only 1 millimeter, so electromagnetic sensor 1 and measure speed gears 6, measure for non-contact type tachometric between 7 tooth tops, the pulse signal that electromagnetic sensor 1 is measured is passed to control indication mechanism 3 by transmission line 2 and is handled, and carries out actual speed and the demonstration of difference rotating speed by the charactron on it (or other display devices).When actual speed and difference rotating speed with the error of setting rotating speed and setting the difference rotating speed during greater than certain numerical value, 3 one of the output of control indication mechanism feed back signal to hydraulic drive mechanism (can adopt routine techniques), the opening big and turn down of the electric-controlled switch of control flow rate of hydraulic system valve, make actual speed and difference rotating speed and set rotating speed and set the difference rotating speed to be consistent, thereby reach automatic control purpose.8 is output signal line among the figure.
Fig. 2 has described a kind of control display circuit that is adopted in the control indication mechanism of the present utility model.Comprise in this circuit by power transformer B, rectifier bridge heap 2L1,2L2, regulator block 7805,7812, the power circuit that capacitor C 13, C14, C15, C16, C17, C18, C19, C20, C21, C22 and power-supply filter LB etc. form; Commercially available by seven dial BP(), the dial formed such as diode D9, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D29, D30, D31, D32, D33, D34, D35, D36 and decoder 74LS138, triode BG5, BG6, resistance R 11, R12, R13, R14, R15, R16 sets input circuit; By the display circuit that shows that charactron and font display decoder 74LS47, resistance R 4, R5, R6, R7, R8, R9, R10 etc. form; By single-chip microcomputer 8748 or 8749, crystal oscillator JZ(6MHZ), capacitor C 5, C6, C7, resistance R 22, R23, R24,, the single chip circuit that button AN5, K switch (be in manual position, another is from controlled position) etc. are formed; By counter CD4520, resistance R 24, R25, R26, R27, R28, R29, R30, R31, R32, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, the signal input circuit that capacitor C 8, C9, C10, C11, C12, C23, diode D5, D6, D7, D8 and nor gate, photoelectrical coupler etc. are formed; And by resistance R 0, R1, R2, R3, R18, R19, R20, R21, capacitor C 1, C2, C3, C4, relay J 1(changes and to subtract), J2(change add), the J3(difference subtracts), the J4(difference adds), diode D1, D2, D3, D4, triode BG1, BG2, BG3, BG4, button AN1(changes and to subtract), AN2(change add), the AN3(difference subtracts), the AN4(difference adds) wait the output control circuit of composition.Two groups of power supply outputs of power circuit, one group is that 12V/80mA specializes in the electromagnetic sensor use, another group 5V/0.45A is a main power source, rotating cylinder revolution speed sensing pulse electrical signal and screw speed sensor pulse electrical signal become square-wave signal after amplifying shaping, deliver to the CD4520 counter and carry out pulse count signal, count results send into again single-chip microcomputer 8748 or 8749 carry out 1 second interval sampling, and calculate per second electric impulse signal number of times, then result of calculation is sent into character display decoder 74LS47 and deciphered, decode results is carried out numeral by rotating speed and difference rotating speed charactron and is shown.In addition, the user preestablishes rotating cylinder rotating speed and screw rod difference speed revolution value and import by the dial initialization circuit according to arts demand, single-chip microcomputer 8748/8749 scans the exterior dial initialization circuit through decoder 74LS138 by the P10-P13 interface, scanning result is with rotating speed and difference rotating speed virtual condition compare this moment, comparative result if speed discrepancy within prescribed limit, then do not export control signal, if speed discrepancy is outside prescribed limit, then the P14-P17 interface by single-chip microcomputer 8748/8749 makes or two actions in four relays, flow valve to Hydraulic Adjustable Speed mechanism is controlled, make actual speed and difference rotating speed all the time with set rotating speed and the difference rotating speed remains in certain speed discrepancy scope, reach automatic control rotating cylinder rotating speed and with the purpose of screw rod difference rotating speed.The TO pin of single-chip microcomputer 8748/8749 is the control mode line, and when TO was " 0 ", single-chip microcomputer was surrendered control, and the plus-minus of rotating speed and difference rotating speed is controlled by manual buttons.
Single-chip microcomputer internal logic principle is: with rotating cylinder tach signal (T commentaries on classics) and screw speed signal (T spiral shell) input, read speed setting dial (T1 establishes) and differential simultaneously and set two signals of dial (T2 establishes), and send internal reservoir, regularly read (it is preceding that T changes) (T changes the back) and (before the T difference) (the poor back of T) after 1 second, and carry out following computing: (T changes the back)-(T change before)=T1(show 1 second the rotating cylinder actual speed), (T difference back)-(before the T difference)=T2(show 1 second screw rod with the actual poor rotating speed of rotating cylinder), preserve T1 then, the T2 signal and with (T1 establishes) (T2 establishes) relatively, if T1〉(T1 establishes) closed output feedback signal of J1 then, if T1 ∠ (T1 establishes) is the closed output feedback signal of J2 then, if T2〉(T2 establishes) closed output feedback signal of J3 then, if T2 ∠ (T2 establishes) is the closed output feedback signal of J4 then, 1 second end-of-job then carry out roughly the same logical operation of next second.
Claims (5)
1, a kind of speed-regulating type horizontal screw centrifuge double speed numerical control device is characterized in that: comprise the rotating cylinder measure speed gears that is fixed on the horizontal screw centrifuge rotating cylinder, and be fixed on the screw rod measure speed gears on the horizontal screw centrifuge screw rod; A pair ofly be fixed in electromagnetic sensor on the centrifuge shell tooth top with above-mentioned two measure speed gearses is relative respectively, the signal transmssion line of electromagnetic sensor links to each other with a control indication mechanism.
2, speed-regulating type horizontal screw centrifuge double speed numerical control device according to claim 1, it is characterized in that: electromagnetic sensor end and measure speed gears gear tip clearance have 0.5-1.5 millimeter gap.
3, speed-regulating type horizontal screw centrifuge double speed numerical control device according to claim 1 and 2, it is characterized in that: the control indication mechanism comprises two groups of amplification and rectification circuits that receive the aforementioned electromagnetic sensor signal, the amplification and rectification circuit output signal is sent into a single-chip microcomputer and is handled behind counter, the single-chip microcomputer output signal is shown by display after the decoding of font display decoder, single-chip microcomputer also output signal makes an output control circuit job, single-chip microcomputer also is connected to the rotational speed regulation parameter and sets input circuit, and a power circuit provides required power supply for foregoing circuit.
4, speed-regulating type horizontal screw centrifuge double speed numerical control device according to claim 3, it is characterized in that: the rotational speed regulation parameter is set input circuit and is comprised one group and the direct-connected dial initialization circuit of single-chip microcomputer, and single-chip microcomputer also is connected with the dial initialization circuit through a decoder.
5, speed-regulating type horizontal screw centrifuge double speed numerical control device according to claim 3, it is characterized in that: output control circuit is made up of relay and subsidiary component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93225515 CN2175039Y (en) | 1993-04-05 | 1993-04-05 | Two-speed numerical controlled arrangement for centrifuge of horizontal threaded rod type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93225515 CN2175039Y (en) | 1993-04-05 | 1993-04-05 | Two-speed numerical controlled arrangement for centrifuge of horizontal threaded rod type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2175039Y true CN2175039Y (en) | 1994-08-24 |
Family
ID=33803304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93225515 Expired - Fee Related CN2175039Y (en) | 1993-04-05 | 1993-04-05 | Two-speed numerical controlled arrangement for centrifuge of horizontal threaded rod type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2175039Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170383A (en) * | 2019-05-29 | 2019-08-27 | 南京中船绿洲机器有限公司 | A kind of intelligence horizontal screw machine operation control system and method |
-
1993
- 1993-04-05 CN CN 93225515 patent/CN2175039Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170383A (en) * | 2019-05-29 | 2019-08-27 | 南京中船绿洲机器有限公司 | A kind of intelligence horizontal screw machine operation control system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |