CN108714488A - A kind of chemical experiment centrifuge - Google Patents
A kind of chemical experiment centrifuge Download PDFInfo
- Publication number
- CN108714488A CN108714488A CN201810454549.6A CN201810454549A CN108714488A CN 108714488 A CN108714488 A CN 108714488A CN 201810454549 A CN201810454549 A CN 201810454549A CN 108714488 A CN108714488 A CN 108714488A
- Authority
- CN
- China
- Prior art keywords
- triode
- relay
- diode
- potentiometer
- resistor
- 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.)
- Pending
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Classifications
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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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- Centrifugal Separators (AREA)
Abstract
The invention discloses a kind of chemical experiment centrifuges, including first resistor to the 4th resistance, the first triode to third transistor, the first diode, the second diode, switch, capacitance, potentiometer, relay and battery, the normally opened control switch of relay is connected in series in the motor power circuit of centrifuge, by lower switch, first triode ON, third transistor is connected, and relay is attracted, and delay starts.When capacitance discharges into certain value, the second triode becomes to be connected by ending, third transistor cut-off, relay release.Delay time is determined by 3rd resistor, potentiometer and capacitance.Compared with prior art, the present invention can control the intermittent work of centrifuge and stopping, and the time operated can be set by adjusting potentiometer, mitigate workload, be not necessarily to manual control, easy to use, have the value of popularization and application.
Description
Technical field
The present invention relates to a kind of chemical experiment instrument more particularly to a kind of chemical experiment centrifuges.
Background technology
Centrifuge is to utilize centrifugal force, the machine of separation liquid and each component in solid particle or the mixture of liquid and liquid
Tool.Centrifuge is mainly used for separating solid particle and the liquid in suspension, or by two kinds of density differences in emulsion, and mutually
Immiscible liquid separates (such as cream is isolated from milk)；It can also be used for excluding the liquid in wet solid, be usually used in
In chemical experiment, centrifuge in the prior art carries out centrifugal work after direct setting speed mostly, in one timing of centrifugal work
Between after carry out manually controlling power cut-off, cumbersome, working efficiency is low, and there are rooms for improvement.
Invention content
The purpose of the present invention is that solve the above-mentioned problems and provides a kind of chemical experiment centrifuge.
The present invention is achieved through the following technical solutions above-mentioned purpose：
The present invention includes first resistor to the 4th resistance, the first triode to third transistor, the first diode, the two or two
Pole pipe, switch, capacitance, potentiometer, relay and battery, the positive while emitter and switch with third transistor of battery
First end connects, the cathode of battery simultaneously with the anode of the second diode, the first end of relay, the first end of potentiometer, electricity
The emitter connection of the sliding end of position device, the emitter of the second triode and the first triode, the second end of switch and the first electricity
The first end of resistance connects, and the second end of first resistor is connect with the base stage of the cathode of the first diode and the first triode simultaneously,
The collector of first triode connect with the first end of the first end of capacitance and second resistance simultaneously, the second end of second resistance and
The base stage of third transistor connects, the collector of third transistor while first end, the second end of relay with the 4th resistance
It is connected with the cathode of the second diode, the second end of the 4th resistance while positive and the second triode the collection with the first diode
Electrode connects, and the base stage of the second triode is connect with the first end of the second end of capacitance and 3rd resistor simultaneously, 3rd resistor
Second end and the second end of potentiometer connect.
The beneficial effects of the present invention are：
The present invention is a kind of chemical experiment centrifuge, and compared with prior art, the present invention can control centrifuge interval
Property work and stopping, and the time operated can be set by adjusting potentiometer, mitigate workload, without artificial control
System, it is easy to use, it has the value of popularization and application.
Description of the drawings
Fig. 1 is the circuit structure schematic diagram of the present invention.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figure 1：The present invention includes first resistor R1 to the 4th resistance R4, the first triode VT1 to third transistor
VT3, the first diode D1, the second diode D2, switch K, capacitance C, potentiometer RP, relay J and battery E, the anode of battery E
Connect simultaneously with the first end of the emitter of third transistor VT3 and switch K, the cathode of battery E and meanwhile with the second diode D2
Anode, the first end of relay J, the first end of potentiometer RP, the sliding end of potentiometer RP, the second triode VT2 transmitting
Pole is connected with the emitter of the first triode VT1, and the second end of switch K is connect with the first end of first resistor R1, first resistor
The second end of R1 is connect with the base stage of the cathode of the first diode D1 and the first triode VT1 simultaneously, the collection of the first triode VT1
Electrode is connect with the first end of the first end of capacitance C and second resistance R2 simultaneously, the second end of second resistance R2 and the three or three pole
The base stage of pipe VT3 connects, the collector of third transistor VT3 while first end, the second end of relay J with the 4th resistance R4
It is connected with the cathode of the second diode D2, the second end of the 4th resistance R4 while positive and the two or three pole with the first diode D1
The collector of pipe VT2 connects, the base stage of the second triode VT2 while the first end with the second end and 3rd resistor R3 of capacitance C
Connection, the second end of 3rd resistor R3 are connect with the second end of potentiometer RP.
Working principle of the present invention is as follows：
The normally opened control switch (not shown) of relay J is connected in series in the motor power circuit of centrifuge,
By lower switch K, the first triode VT1 conductings, third transistor VT3 is connected, and relay J is attracted, and delay starts.When capacitance C is put
When electricity is to certain value, the second triode VT2 becomes to be connected by ending, third transistor VT3 cut-offs, relay J releases.When delay
Between determined by 3rd resistor R3, potentiometer RP and capacitance C.
The basic principles and main features and advantages of the present invention of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (1)
1. a kind of chemical experiment centrifuge, it is characterised in that：Including first resistor to the 4th resistance, the first triode to third
Triode, the first diode, the second diode, switch, capacitance, potentiometer, relay and battery, the anode of battery is simultaneously with the
The emitter of three triodes is connected with the first end of switch, the cathode of battery simultaneously with the anode of the second diode, relay
The emitter company of first end, the first end of potentiometer, the sliding end of potentiometer, the emitter of the second triode and the first triode
It connects, the second end of switch and the first end of first resistor connect, the second end of first resistor while the cathode with the first diode
Connected with the base stage of the first triode, the collector of the first triode simultaneously with the first end of capacitance and the first end of second resistance
The base stage of connection, the second end of second resistance and third transistor connects, the collector of third transistor simultaneously with the 4th resistance
First end, the second end of relay connected with the cathode of the second diode, the second end of the 4th resistance simultaneously with the one or two pole
The anode of pipe is connected with the collector of the second triode, the base stage of the second triode while second end and 3rd resistor with capacitance
First end connection, the second end of the second end of 3rd resistor and potentiometer connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810454549.6A CN108714488A (en) | 2018-05-14 | 2018-05-14 | A kind of chemical experiment centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810454549.6A CN108714488A (en) | 2018-05-14 | 2018-05-14 | A kind of chemical experiment centrifuge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108714488A true CN108714488A (en) | 2018-10-30 |
Family
ID=63899851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810454549.6A Pending CN108714488A (en) | 2018-05-14 | 2018-05-14 | A kind of chemical experiment centrifuge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108714488A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203399080U (en) * | 2013-07-19 | 2014-01-15 | 邹驰 | Touch switch for electronic gate of industrial workshop |
| CN203574913U (en) * | 2013-11-29 | 2014-04-30 | 成都市幻多奇软件有限公司 | Power supply control circuit used for multimedia projector |
| CN107591778A (en) * | 2017-10-12 | 2018-01-16 | 南京林洋电力科技有限公司 | A kind of current foldback circuit of self recovery |
| CN206968613U (en) * | 2017-07-28 | 2018-02-06 | 北京汽车研究总院有限公司 | Interval shelves rain brush control device and automobile |
| GB2554424A (en) * | 2016-09-27 | 2018-04-04 | Pulse Lighting Ltd | Safety trip device |
-
2018
- 2018-05-14 CN CN201810454549.6A patent/CN108714488A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203399080U (en) * | 2013-07-19 | 2014-01-15 | 邹驰 | Touch switch for electronic gate of industrial workshop |
| CN203574913U (en) * | 2013-11-29 | 2014-04-30 | 成都市幻多奇软件有限公司 | Power supply control circuit used for multimedia projector |
| GB2554424A (en) * | 2016-09-27 | 2018-04-04 | Pulse Lighting Ltd | Safety trip device |
| CN206968613U (en) * | 2017-07-28 | 2018-02-06 | 北京汽车研究总院有限公司 | Interval shelves rain brush control device and automobile |
| CN107591778A (en) * | 2017-10-12 | 2018-01-16 | 南京林洋电力科技有限公司 | A kind of current foldback circuit of self recovery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181030 |