CN203949686U - Vacuum pump driving-belt failure warning system - Google Patents
Vacuum pump driving-belt failure warning system Download PDFInfo
- Publication number
- CN203949686U CN203949686U CN201420066446.XU CN201420066446U CN203949686U CN 203949686 U CN203949686 U CN 203949686U CN 201420066446 U CN201420066446 U CN 201420066446U CN 203949686 U CN203949686 U CN 203949686U
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- China
- Prior art keywords
- current
- comparison circuit
- vacuum pump
- warning system
- alarm
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- Expired - Fee Related
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
A kind of vacuum pump driving-belt of the utility model failure warning system, comprising: current comparison circuit, is connected with driving the motor of driving-belt; Alarm, is connected with this current comparison circuit; Wherein, this current comparison circuit obtains the working current of this motor, and this working current and a threshold current are compared, if be greater than this threshold current, sends a signal to this alarm, and this alarm is reported to the police.Vacuum pump driving-belt failure warning system of the present utility model, can report to the police in time to the fault such as stuck of vacuum pump driving-belt, and have the simple in structure of warning system, and cost is lower, is easy to the advantages such as maintenance.
Description
Technical field
The utility model relates to a kind of silicon single crystal production equipment, relates in particular to the accident warning device of the driving-belt of vacuum pump.
Background technology
Each device fabrication producer of existing solar energy level silicon single crystal stove does not all have a kind of alarm system of design and installation.Some vacuum pump warning devices, are generally confined to press abnormal alarm in the overload-alarm of vacuum pump or stove, for the fault that unexpected driving-belt is stuck, can not make alarm.Thereby run into this fault, can not process the very first time, very unfavorable to normal production.
Utility model content
The utility model discloses a kind of vacuum pump driving-belt failure warning system, in order to solve existing warning device, cannot carry out to the fault of driving-belt the problem of alarm.
A kind of vacuum pump driving-belt of utility model failure warning system, wherein, comprising: current comparison circuit, is connected with driving the motor of driving-belt; Alarm, is connected with this current comparison circuit; Wherein, this current comparison circuit obtains the electric current of this motor, and compares with a threshold current, if be greater than this threshold current, sends a signal to this alarm, and this alarm is reported to the police.
One embodiment of the utility model vacuum pump driving-belt failure warning system, wherein, also comprises: current transformer, is connected between this current comparison circuit and this motor.
One embodiment of the utility model vacuum pump driving-belt failure warning system, wherein, also comprises: power supply, is connected with this current comparison circuit.
One embodiment of the utility model vacuum pump driving-belt failure warning system, wherein, this motor is three phase electric machine, this current comparison circuit is connected with one of this three phase electric machine.
One embodiment of the utility model vacuum pump driving-belt failure warning system, wherein, also comprises: relay, is connected between this alarm and this current comparison circuit.
One embodiment of the utility model vacuum pump driving-belt failure warning system, wherein, this current comparison circuit comprises: differential amplification part, with to input current shaping and amplification; Comparator circuit part, connects a reference voltage and this relay, with input current and reference voltage to shaping and after amplifying, compare, and according to comparative result to this relay output signal.
In sum, vacuum pump driving-belt failure warning system of the present utility model, can report to the police in time to the fault such as stuck of vacuum pump driving-belt, and have the simple in structure of warning system, and cost is lower, is easy to the advantages such as maintenance.
Accompanying drawing explanation
Figure 1 shows that the schematic diagram of an embodiment of the utility model vacuum pump driving-belt failure warning system;
Figure 2 shows that the schematic diagram of another embodiment of the utility model vacuum pump driving-belt failure warning system;
Fig. 3 is the schematic diagram of the circuit part of the utility model vacuum pump driving-belt failure warning system.
Embodiment
Figure 1 shows that the schematic diagram of an embodiment of the utility model vacuum pump driving-belt failure warning system, as shown in Figure 1, vacuum pump has driving-belt 4 for vacuumizing, and the motor 3 of vacuum pump is in order to drive driving-belt 4 actions.Vacuum pump driving-belt failure warning system comprises current comparison circuit 2 and alarm 1.
With reference to figure 1, current comparison circuit 2 is connected with driving the motor 3 of driving-belt.Alarm 1 is connected with current comparison circuit 2.Current comparison circuit 2 obtains the electric current of motor 3, and compares with a threshold current, if be greater than threshold current, current comparison circuit 2 sends a signal to alarm 1, and alarm 1 is reported to the police.
Figure 2 shows that the schematic diagram of another embodiment of the utility model vacuum pump driving-belt failure warning system, with reference to figure 2, the vacuum pump driving-belt failure warning system of the present embodiment comprises: alarm 1, relay 6, current comparison circuit 2, power supply 7 and current transformer 5.The motor 3 of vacuum pump is three phase electric machine, and three phase electric machine 3 drives 4 operations of vacuum pump driving-belt.
With reference to figure 2, current transformer 5 connects a phase of three phase electric machine 3, with the electric current of detection-sensitive motor 3, and will after the current conversion of sensing, send to current comparison circuit 2.Power supply 7 is connected with current comparison circuit 2, to provide electric power to current comparison circuit 2.Relay 6 is connected between alarm 1 and current comparison circuit 2.
Fig. 3 is the schematic diagram of the circuit part of the utility model vacuum pump driving-belt failure warning system, and current comparison circuit 2 and relay 6 have been shown in Fig. 3, and current comparison circuit 2 is divided into differential amplifier section and comparator circuit part.With reference to figure 2 and Fig. 3, control chip JP2 is the two ends in resistance R 10 by the mutual inductance current load after electric power mutual-inductor 5 conversions, the two pins of the input current of power supply 7 input control chip JP1 after 4 commutation diode D1 rectification connects,, can input 15-24V and exchange or direct supply.Control chip JP3 can control circuit enable.Conversion at the mutual inductance electric current of electric power mutual-inductor 5 is loaded into R10 two ends, after four commutation diode D2 rectification, after capacitor C 7 filtering, at resistance R 7 two ends, obtains a magnitude of voltage stably, is assumed to be voltage X.Diode D10 is for the protection of circuit.
Voltage X carries out shaping and amplification through the differential amplifier circuit of amplifier B and each resistance composition.For comparator circuit part, voltage X signal through resistance R 3 and resistance R 4 is sent into amplifier A negative input end, the voltage process resistance R 6 of the 5V that positive input terminal is produced by voltage stabilizer U1 and the bleeder circuit that resistance R 8 forms are sent into the positive input terminal of amplifier B by resistance R 12, by setting the magnitude of voltage of positive input, be assumed to be Y.When once voltage X is greater than voltage Y, motor 3 supercurrents are described, to relay 6 transmitted signals, pilot relay 6 actions, the power supply of the alarm 1 of connection acousto-optic, sends sound and light alarm.From informing that vacuum pump exists abnormal situation, need to manually check.
In sum, vacuum pump driving-belt failure warning system of the present utility model, can report to the police in time to the fault such as stuck of vacuum pump driving-belt, and have the simple in structure of warning system, and cost is lower, is easy to the advantages such as maintenance.
The technical solution of the utility model is disclosed as above by preferred embodiment.Those skilled in the art should recognize in the situation that do not depart from change and the retouching that scope and spirit of the present utility model that the appended claim of the utility model discloses are done, within all belonging to the protection domain of claim of the present utility model.
Claims (3)
1. a vacuum pump driving-belt failure warning system, is characterized in that, comprising:
Current comparison circuit, is connected with driving the motor of driving-belt;
Alarm, is connected with this current comparison circuit;
Current transformer, is connected between this current comparison circuit and this motor; And
Relay, is connected between this alarm and this current comparison circuit;
Wherein, this current comparison circuit obtains the working current of this motor, and this working current and a threshold current are compared, if be greater than this threshold current, sends a signal to this alarm, and this alarm is reported to the police;
This current comparison circuit comprises:
Differential amplifier circuit part, obtains the working current of this motor of this current transformer, with to input current shaping and amplification; And
Comparator circuit part, comprises amplifier and a plurality of resistance, connects a reference voltage and this relay, compares, and send a signal to this alarm according to comparative result with input current and reference voltage to shaping and after amplifying.
2. failure warning system as claimed in claim 1, is characterized in that, also comprises: power supply, is connected with this current comparison circuit.
3. failure warning system as claimed in claim 1, is characterized in that, this motor is three phase electric machine, and this current comparison circuit is connected with one of this three phase electric machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066446.XU CN203949686U (en) | 2014-02-14 | 2014-02-14 | Vacuum pump driving-belt failure warning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066446.XU CN203949686U (en) | 2014-02-14 | 2014-02-14 | Vacuum pump driving-belt failure warning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203949686U true CN203949686U (en) | 2014-11-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420066446.XU Expired - Fee Related CN203949686U (en) | 2014-02-14 | 2014-02-14 | Vacuum pump driving-belt failure warning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203949686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979684A (en) * | 2016-01-15 | 2017-07-25 | 湖南天源工业设备有限公司 | A kind of vacuum sintering furnace |
-
2014
- 2014-02-14 CN CN201420066446.XU patent/CN203949686U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979684A (en) * | 2016-01-15 | 2017-07-25 | 湖南天源工业设备有限公司 | A kind of vacuum sintering furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170615 Granted publication date: 20141119 |
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| PD01 | Discharge of preservation of patent |
Date of cancellation: 20190615 Granted publication date: 20141119 |
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| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20200214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |