CN204179969U - A kind of motor start circuit of medical centrifuge - Google Patents
A kind of motor start circuit of medical centrifuge Download PDFInfo
- Publication number
- CN204179969U CN204179969U CN201420663556.4U CN201420663556U CN204179969U CN 204179969 U CN204179969 U CN 204179969U CN 201420663556 U CN201420663556 U CN 201420663556U CN 204179969 U CN204179969 U CN 204179969U
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- China
- Prior art keywords
- contactor
- contact
- winding
- coil
- time relay
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Abstract
The utility model discloses a kind of motor start circuit of medical centrifuge, comprise DC power supply, mains switch, fuse, start button, stop button, first contactor, second contactor, 3rd contactor, the time relay, centrifugal motor, first winding, second winding and resistance, compared with prior art, the utility model can make centrifugal motor after clean boot, normally run under rated operational voltage, better working stability, have employed the time relay, can prevent preferably at the beginning of startup, dropping resistor is by the second contactor short circuit, structure is simple, can be widely used in medical centrifuge.
Description
Technical field
The utility model relates to a kind of motor start circuit, particularly relates to a kind of motor start circuit of medical centrifuge.
Background technology
Usually we are when for hospital laboratory buying low speed centrifuge; the low-speed centrifugal chance of usual employing is used for doing vacuum blood collection and is separated; the vacuum test tube that uses; city-level unit every day, heparin tube to be processed number ratio was more; usually the machine that centrifugal amount is larger can be selected once; this service behaviour to centrifugal motor requires higher, and the motor start circuit job stability of medical centrifuge is poor now, often can not meet our work requirements.
Utility model content
The purpose of this utility model is just the motor start circuit providing a kind of medical centrifuge in order to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises DC power supply, mains switch, fuse, start button, stop button, first contactor, second contactor, 3rd contactor, the time relay, centrifugal motor, first winding, second winding and resistance, the positive pole of described DC power supply is connected with the first input end of described mains switch, the negative pole of described DC power supply is connected with the second input of described mains switch, first output of described mains switch is connected with the first end of described stop button and the first end of described first contactor first contact simultaneously, second output of described mains switch is connected with the first end of described fuse, second end of described fuse simultaneously with the first end of described first contactor the 3rd contact, the first end of described first contactor coil is connected with the first end of described time relay coil, second end of described first contactor coil simultaneously with the first end of described start button, second end of described time relay coil is connected with the first end of described first contactor second contact, second end of described start button is connected with described second end of the first contactor second contact and the second end of described stop button simultaneously, second end of described first contactor first contact simultaneously with the first end of described first winding, the first end of described centrifugal motor is connected with the first end of described time relay contact, second end of described centrifugal motor is connected with the first end of described second winding, second end of described second winding is connected with the first end of described 3rd contactor coil and the first end of described second contactor first contact simultaneously, second end of described 3rd contactor coil is connected with the first end of described resistance, second end of described resistance simultaneously with the second end of described first contactor the 3rd contact, second end of described first winding, second end of described second contactor first contact is connected with the first end of described 3rd contactor first contact, second end of described 3rd contactor first contact is connected with the first end of described second contactor coil, second end of described second contactor coil is connected with the second end of described time relay contact.
Particularly, described mains switch is secondary linkage switch.
The beneficial effects of the utility model are:
The motor start circuit of a kind of medical centrifuge described in the utility model, can make centrifugal motor after clean boot, normally run under rated operational voltage, better working stability, have employed the time relay, can prevent preferably at the beginning of startup, dropping resistor is by the second contactor short circuit, structure is simple, can be widely used in medical centrifuge.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the motor start circuit of a kind of medical centrifuge described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model comprises DC power supply DC, mains switch QS, fuse FU, start button ST, stop button STP, first contactor KM1, second contactor KM2, 3rd contactor KM3, time relay KT, centrifugal motor M, first winding L 1, second winding L 2 and resistance R, the positive pole of DC power supply DC is connected with the first input end of mains switch QS, the negative pole of DC power supply DC is connected with second input of mains switch QS, first output of mains switch QS is connected with the first end of stop button STP and the first end of the first contactor KM1 first contact KM1-1 simultaneously, second output of mains switch QS is connected with the first end of fuse FU, second end of fuse FU simultaneously with the first end of the first contactor KM1 the 3rd contact KM1-3, the first end of the first contactor KM1 coil is connected with the first end of time relay KT coil, second end of the first contactor KM1 coil simultaneously with the first end of start button ST, second end of time relay KT coil is connected with the first end of the first contactor KM1 second contact KM1-2, second end of start button ST is connected with second end of the first contactor KM1 second contact KM1-2 and second end of stop button STP simultaneously, second end of the first contactor KM1 first contact KM1-1 simultaneously with the first end of the first winding L 1, the first end of centrifugal motor M is connected with the first end of time relay KT contact KT-1, second end of centrifugal motor M is connected with the first end of the second winding L 2, second end of the second winding L 2 is connected with the first end of the 3rd contactor KM3 coil and the first end of the second contactor KM2 first contact KM2-1 simultaneously, second end of the 3rd contactor KM3 coil is connected with the first end of resistance R, second end of resistance R simultaneously with second end of the first contactor KM1 the 3rd contact KM1-3, second end of the first winding L 1, second end of the second contactor KM2 first contact KM2-1 is connected with the first end of the 3rd contactor KM3 first contact KM3-1, second end of the 3rd contactor KM3 first contact KM3-1 is connected with the first end of the second contactor KM2 coil, second end of the second contactor KM2 coil is connected with second end of time relay KT contact KT-1, mains switch QS is secondary linkage switch.
The motor start circuit of a kind of medical centrifuge described in the utility model, as power turn-on switch QS, press start button ST, first contactor KM1 coil obtains electric adhesive (its first contact KM1-1 is normally opened contact to the 3rd contact KM1-3), its 3 place normally opened contact is all closed, centrifugal motor M armature circuit seals in resistance R and makes reduced-voltage starting, after the second contact KM1-2 of the first contactor KM1 is closed, realize self-locking, time relay KT coil also electric, meanwhile, 3rd contactor KM3 contactor action, its normally-closed contact KM3-1 disconnects, when centrifugal motor M rotating speed raises, armature supply is declined, 3rd contactor KM3 discharges, second contactor KM2 obtains electronic work, the contact KM2-1 of the second contactor KM2 closes, dropping resistor R short circuit, centrifugal motor M just starts normally to run under rated operational voltage, adopt time relay KT, object is to prevent at the beginning of startup, dropping resistor R is by the second contactor KM2 short circuit.Utility model works structure is simple, effectively can ensure the normal startup of centrifugal motor M, centrifugal motor M normally be run under rated operational voltage, can be widely used in medical centrifuge.
Claims (2)
1. the motor start circuit of a medical centrifuge, it is characterized in that: comprise DC power supply, mains switch, fuse, start button, stop button, first contactor, second contactor, 3rd contactor, the time relay, centrifugal motor, first winding, second winding and resistance, the positive pole of described DC power supply is connected with the first input end of described mains switch, the negative pole of described DC power supply is connected with the second input of described mains switch, first output of described mains switch is connected with the first end of described stop button and the first end of described first contactor first contact simultaneously, second output of described mains switch is connected with the first end of described fuse, second end of described fuse simultaneously with the first end of described first contactor the 3rd contact, the first end of described first contactor coil is connected with the first end of described time relay coil, second end of described first contactor coil simultaneously with the first end of described start button, second end of described time relay coil is connected with the first end of described first contactor second contact, second end of described start button is connected with described second end of the first contactor second contact and the second end of described stop button simultaneously, second end of described first contactor first contact simultaneously with the first end of described first winding, the first end of described centrifugal motor is connected with the first end of described time relay contact, second end of described centrifugal motor is connected with the first end of described second winding, second end of described second winding is connected with the first end of described 3rd contactor coil and the first end of described second contactor first contact simultaneously, second end of described 3rd contactor coil is connected with the first end of described resistance, second end of described resistance simultaneously with the second end of described first contactor the 3rd contact, second end of described first winding, second end of described second contactor first contact is connected with the first end of described 3rd contactor first contact, second end of described 3rd contactor first contact is connected with the first end of described second contactor coil, second end of described second contactor coil is connected with the second end of described time relay contact.
2. the motor start circuit of a kind of medical centrifuge according to claim 1, is characterized in that: described mains switch is secondary linkage switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663556.4U CN204179969U (en) | 2014-11-07 | 2014-11-07 | A kind of motor start circuit of medical centrifuge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420663556.4U CN204179969U (en) | 2014-11-07 | 2014-11-07 | A kind of motor start circuit of medical centrifuge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204179969U true CN204179969U (en) | 2015-02-25 |
Family
ID=52568743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420663556.4U Withdrawn - After Issue CN204179969U (en) | 2014-11-07 | 2014-11-07 | A kind of motor start circuit of medical centrifuge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204179969U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300841A (en) * | 2014-11-07 | 2015-01-21 | 成都美益达医疗科技有限公司 | Motor starting circuit of medical centrifugal machine |
-
2014
- 2014-11-07 CN CN201420663556.4U patent/CN204179969U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300841A (en) * | 2014-11-07 | 2015-01-21 | 成都美益达医疗科技有限公司 | Motor starting circuit of medical centrifugal machine |
| CN104300841B (en) * | 2014-11-07 | 2016-08-17 | 成都美益达医疗科技有限公司 | A kind of motor start circuit of medical centrifuge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150225 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |