CN203502761U - Monitoring instrument for water supply equipment - Google Patents
Monitoring instrument for water supply equipment Download PDFInfo
- Publication number
- CN203502761U CN203502761U CN201320655244.4U CN201320655244U CN203502761U CN 203502761 U CN203502761 U CN 203502761U CN 201320655244 U CN201320655244 U CN 201320655244U CN 203502761 U CN203502761 U CN 203502761U
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- China
- Prior art keywords
- motor
- signal acquisition
- thermistor
- flow sensor
- acquisition circuit
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- Expired - Fee Related
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Abstract
Disclosed in the utility model is a monitoring instrument for water supply equipment. The monitoring instrument comprises a housing; a control circuit board is arranged inside the housing and is electrically connected with a pressure relay, a flow sensor and a thermistor; the pressure sensor and the flow sensor are installed at a water route; and the thermistor is installed at the motor. Besides, the control circuit board is also electrically connected with a contactor that is installed at a motor main loop. According to the monitoring instrument, the motor is controlled by indirectly detecting the state of the pressure relay, so that the service life of the pressure relay is prolonged and equipment water supplying becomes stable. The flow sensor of the monitoring instrument can detect the water flowing state and thus the motor stops working under the circumstances that there is no water flow, thereby avoiding the motor idling; and the thermistor of the monitoring instrument also can detect the abnormal overheating of the motor due to factors like the power grid and the environment temperature and the like, thereby avoiding motor burning. The provided monitoring instrument can control water supply of the motor stably and the motor can be protected effectively.
Description
Technical field
The utility model relates to a kind of supply equipment, particularly a kind of supply equipment monitor.
Background technology
Motor is controlled in the contact of the mostly direct working pressure relays of supply equipment such as current non-tower water feeder, pipe pressurizing water-feed, while adopting this control mode, the contact of the easy ablation pressure switch of voltage of 220V causes hydraulic pressure out of control, and when the water inlet end of supply equipment is cut off the water, pressure switch also can be connected motor always, allow motor dally, make burn-down of electric motor.
Utility model content
Technical problem to be solved in the utility model is, provides a kind of energy the stable supply equipment monitor of controlling motor water supply and having electric motor protecting function.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of supply equipment monitor, comprise housing, in described housing, be provided with control circuit board, described control circuit board is electrically connected with pressure switch, flow sensor and thermistor, described pressure switch, flow sensor are arranged on water route, described thermistor is arranged on motor, and described control circuit board is also electrically connected with contactor, and described contactor is arranged on motor main circuit.
As preferred version of the present utility model, described control circuit board comprises power-switching circuit, control chip, pressure switch signal acquisition circuit, thermistor signal Acquisition Circuit, flow sensor signal Acquisition Circuit and contactor drive circuit, described power-switching circuit can transfer 220V AC power to low-voltage dc power supply, exports to control chip, pressure switch signal acquisition circuit, thermistor signal Acquisition Circuit and flow sensor signal Acquisition Circuit; The input signal of described control chip energy processing pressure relay signal Acquisition Circuit, thermistor signal Acquisition Circuit, flow sensor signal Acquisition Circuit is also exported control signal to contactor drive circuit; Described pressure switch signal acquisition circuit, judgement pressure switch state is exported high low voltage signal to control chip; Described thermistor signal Acquisition Circuit, the state of temperature of judgement thermistor is exported high low voltage signal to control chip; Described flow sensor signal Acquisition Circuit, judgement flow sensor state is exported high low voltage signal to control chip; Described contactor drive circuit, is switched on or switched off contactor according to the control signal of control chip.
As preferred version of the present utility model, on described housing, be provided with voltage table and the reometer of measuring motor operating voltage electric current.
The utility model supply equipment monitor, by detected pressures relay status, indirectly control motor, can extend the serviceable life of pressure switch, equipment is supplied water more stable, and, the flow sensor of this monitor can detect streamflow regime, allows and quits work the in the situation that of motor non-water flow, avoids motor idle running; The thermistor of this monitor can also detect extremely overheated because of factors such as electrical network, environment temperatures of motor, avoids burn-down of electric motor.The utility model supply equipment monitor can be stablized control motor and supplies water and can effectively protect motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model supply equipment monitor.
Fig. 2 is the circuit theory diagrams of the utility model supply equipment monitor.
Mark in figure: 1 is power-switching circuit, 2 is pressure switch signal acquisition circuit, and 3 is thermistor signal Acquisition Circuit, and 4 is flow sensor signal Acquisition Circuit, 5 is contactor drive circuit, R1, R2, R3, R6, R7 are resistance, and R4 is adjustable resistance, and R5 is thermistor, C1, C2 are electric capacity, VD1 is commutation diode, and VS1 is voltage stabilizing diode, and J1 is pressure switch, J2 is relay, KM is contactor, and B1 is triode, and B2 is metal-oxide-semiconductor, BV is flow sensor, V is voltage table, and A is reometer, and M is motor.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, the utility model supply equipment monitor, comprise housing, in described housing, be provided with control circuit board, described control circuit board is electrically connected with pressure switch, flow sensor and thermistor, and described pressure switch, flow sensor are arranged on water route, and described thermistor is arranged on motor, described control circuit board is also electrically connected with contactor, and described contactor is arranged on motor main circuit.
As shown in Figure 2, in the utility model supply equipment monitor:
By decompression capacitor C1, bleeder resistance R1, voltage stabilizing diode VS1, commutation diode VD1 and filter capacitor C2, form power-switching circuit 1, transfer 220V alternating current to direct current output;
By pressure switch J1, resistance R 2, form pressure switch signal acquisition circuit 2, after described relay J 1 contact resistance in series R2, access power-switching circuit 1, between described relay J 1 and resistance R 2, draw signal end Access Control chip, when relay J 1 is closed, signal end is high level, when relay J 1 disconnects, signal end is low level;
By resistance R 3, R6, R7, adjustable resistor R4, thermistor R5, triode B1, form thermistor signal Acquisition Circuit 3, resistance R 3, adjustable resistor R4 and thermistor R5 are connected into bleeder circuit, R6, R7 seal in respectively collector, the base stage of triode B1, make triode B1 be operated in switching mode, between R6 and triode B1, draw signal end Access Control chip, thermistor R5 varies with temperature, and closes or open triode BJ, changes output level.
Flow sensor BV power end access power-switching circuit 1, output terminal Access Control chip, flow sensor BV exports high level when having current, output low level during non-water flow;
By metal-oxide-semiconductor B2, relay J 2, form contactor drive circuit 5, metal-oxide-semiconductor B2 grid connects control chip, and relay J 2 coils are connected and accessed direct supply with drain electrode, connects with contactor KM coil and access 220V power supply in relay J 2 contacts.
During the work of this supply equipment monitor, control chip only, when three inputs are all setting value, is just controlled electric motor starting, stops machine operation when any one incoming level redirect.
Understand for the convenience of the user the job information of supply equipment, on this monitor housing, be also provided with the reometer A and the voltage table V that detect current of electric and voltage.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (3)
1. a supply equipment monitor, it is characterized in that: comprise housing, in described housing, be provided with control circuit board, described control circuit board is electrically connected with pressure switch, flow sensor and thermistor, described pressure switch, flow sensor are arranged on water route, described thermistor is arranged on motor, and described control circuit board is also electrically connected with contactor, and described contactor is arranged on motor main circuit.
2. supply equipment monitor according to claim 1, it is characterized in that: described control circuit board comprises power-switching circuit (1), control chip, pressure switch signal acquisition circuit (2), thermistor signal Acquisition Circuit (3), flow sensor signal Acquisition Circuit (4) and contactor drive circuit (5)
Described power-switching circuit (1) can transfer 220V AC power to low-voltage dc power supply, exports to control chip, pressure switch signal acquisition circuit (2), thermistor signal Acquisition Circuit (3) and flow sensor signal Acquisition Circuit (4);
The input signal of described control chip energy processing pressure relay signal Acquisition Circuit (2), thermistor signal Acquisition Circuit (3), flow sensor signal Acquisition Circuit (4) is also exported control signal to contactor drive circuit (5);
Described pressure switch signal acquisition circuit (2), judgement pressure switch state is exported high low voltage signal to control chip;
Described thermistor signal Acquisition Circuit (3), the state of temperature of judgement thermistor is exported high low voltage signal to control chip;
Described flow sensor signal Acquisition Circuit (4), judgement flow sensor state is exported high low voltage signal to control chip;
Described contactor drive circuit (5), is switched on or switched off contactor according to the control signal of control chip.
3. supply equipment monitor according to claim 1 and 2, is characterized in that: on described housing, be provided with voltage table and the reometer of measuring motor operating voltage electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320655244.4U CN203502761U (en) | 2013-10-23 | 2013-10-23 | Monitoring instrument for water supply equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320655244.4U CN203502761U (en) | 2013-10-23 | 2013-10-23 | Monitoring instrument for water supply equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203502761U true CN203502761U (en) | 2014-03-26 |
Family
ID=50333729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320655244.4U Expired - Fee Related CN203502761U (en) | 2013-10-23 | 2013-10-23 | Monitoring instrument for water supply equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203502761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105585162A (en) * | 2016-01-27 | 2016-05-18 | 珠海格力电器股份有限公司 | Water purification unit and inlet pressure control assembly |
-
2013
- 2013-10-23 CN CN201320655244.4U patent/CN203502761U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105585162A (en) * | 2016-01-27 | 2016-05-18 | 珠海格力电器股份有限公司 | Water purification unit and inlet pressure control assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20181023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |