CN203516134U - Pressure switch preventing water pump from sticking - Google Patents
Pressure switch preventing water pump from sticking Download PDFInfo
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- CN203516134U CN203516134U CN201320586787.5U CN201320586787U CN203516134U CN 203516134 U CN203516134 U CN 203516134U CN 201320586787 U CN201320586787 U CN 201320586787U CN 203516134 U CN203516134 U CN 203516134U
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Abstract
The utility model relates to a pressure switch preventing a water pump from sticking. The pressure switch comprises a lower chassis, a pressure bag, a hinge pin, a spring, a middle chassis, a micro-switch fixing plate, an upper chassis and a control circuit. The control circuit comprises a capacitance-resistance and pressure-reduction direct-current power source composed of a capacitor C1, a capacitor C2, a resistor R1, a rectifier D1, a voltage stabilizing tube D2, and a starting circuit preventing the water pump from sticking, and the starting circuit is composed of a capacitor C3, a capacitor C4, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, an audion Q1, a micro-switch, an NE555P timer, a negation gate, an MOC photo-coupling switch and a bidirectional triode thyristor. The pressure switch can effectively prevent a self-priming pump from sticking.
Description
Technical field
The utility model relates to a kind of pressure switch for water pump, the stuck pressure switch of especially a kind of waterproof pump.
Background technique
In family supplies water, often adopts on self-priming pump, to fill pressure switch and achieve automation, when water tap is opened, the energising of pressure switch action water pump, when water tap is closed, hydraulic pressure increase in pressure switch place makes again pressure switch move water pump to close.It is automatically to realize by the pressure of water that pressure switch is controlled power on/off, but sometimes because water tap is closed for a long time, cause water pump also not turn round for a long time, cause water pump vane to stop up, when water tap is opened water pump and need to be turned round, impeller is stuck again, when serious, can burn out motor.
Summary of the invention
The pressure switch that provides a kind of waterproof pump stuck is provided the purpose of this utility model.
The utility model is achieved in that this pressure switch comprises lower underframe, pressure bladder, bearing pin, spring, middle underframe, sensitive switch fixed plate, upper underframe and a control circuit, described lower underframe and middle underframe are connected, and have a screw thread port on it, on described middle underframe, there is a port, described pressure bladder is placed between lower underframe and middle underframe, and by lower underframe and middle underframe compression fit, its lower end surface communicates with the screw thread port of lower underframe, and upper-end surface communicates with the port of middle underframe, described bearing pin is placed in the port of middle underframe, and bearing pin and middle underframe form a sliding pair, and is placed in the upper-end surface of pressure bladder, described spring is placed in the port of middle underframe, and spring one end heads on bearing pin, and the other end heads on middle underframe, described upper underframe and middle underframe are connected, and have a hole on it, described sensitive switch fixed plate is placed in the hole of underframe, and is connected with upper underframe, has a sensitive switch on it, is arranged on sensitive switch fixed plate lower end surface, and faces bearing pin, described control circuit comprises the capacitance-resistance step down type DC electrical source that capacitor C 1, capacitor C 2, resistance R 1, rectifier D1, voltage-stabiliser tube D2 form, the stuck starting circuit of waterproof pump that capacitor C 3, capacitor C 4, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, triode Q1, sensitive switch, NE555P timer, not gate, MOC optical coupled switch, bidirectional triode thyristor form, resistance R 1 in capacitance-resistance step down type DC electrical source exchanges incoming end with one of capacitor C 1 parallel connection and one end access rectifier D1, the other end accesses extraneous power supply, another of rectifier D1 exchanges incoming end and also accesses extraneous power supply, voltage-stabiliser tube D2 is in parallel with capacitor C 2, the positive pole of voltage-stabiliser tube D2 connects the anodal DC output end of rectifier D1, and the negative pole of voltage-stabiliser tube D2 connects the negative pole DC output end of rectifier D1, resistance R 2 in the stuck starting circuit of waterproof pump, the normally-closed contact of sensitive switch is connected with capacitor C 3 and is accessed capacitance-resistance step down type DC electrical source, wherein capacitor C 3 terminations enter the negative pole of capacitance-resistance step down type DC electrical source, the normally-closed contact termination of sensitive switch enters the positive pole of capacitance-resistance step down type DC electrical source, resistance R 3 is connected with the normally opened contact of sensitive switch, and the positive pole of the normally opened contact of sensitive switch access capacitance-resistance step down type DC electrical source, resistance R 3 terminations enter the branch of connecting of capacitor C 3 and resistance R 2, the connect collector electrode of branch access triode Q1 and the triggering pin 2 of NE555P timer by capacitor C 3 with resistance R 2, threshold values pin 6, the emitter of triode Q1 is through the discharge end 7 of resistance R 4 access NE555P timers, the base stage access resistance R 3 of triode Q1 and the branch of connecting of the normally opened contact of sensitive switch, the reset pin 4 of NE555P timer, power pins 8 all accesses the positive pole of capacitance-resistance step down type DC electrical source, the negative pole of the grounding pin 1 access capacitance-resistance step down type DC electrical source of NE555P timer, the control pin 5 of NE555P timer is through the negative pole of capacitor C 4 access capacitance-resistance step down type DC electrical source, the output pin 3 of NE555P timer is through the anode pin 1 of not gate access MOC optocoupler, the negative electrode pin 2 of MOC optocoupler is through the negative pole of resistance R 5 access capacitance-resistance step down type DC electrical source, one output pin 4 of MOC optocoupler is through the T2 utmost point of resistance R 6 access bidirectional triode thyristors, the control utmost point G. of another output pin 6 access bidirectional triode thyristors of MOC optocoupler.
The utility model should be connected with self-priming pump while installing, and the T1 utmost point of bidirectional triode thyristor, the break-make of the T2 utmost point are controlled the break-make of self-priming pump power supply, and it has following several working method.
The first: when water tap is opened, pump housing internal pressure reduces, the screw thread passage port hydraulic pressure that is lower underframe in pressure switch reduces, spring can push away bearing pin and move down, to bearing pin and sensitive switch no conflict, the normally-closed contact of sensitive switch is logical, capacitor C 3 is connected with resistance R 2 and in charged state, the voltage that has just started capacitor C 3 two ends is zero, so that capacitor C 3 is low potential with the branch of connecting of resistance R 2, the output pin 3 of timer NE555P is high petential, through the non-optocoupler of MOC behind the door no electric circuit, its output pin is obstructed, bidirectional triode thyristor is controlled utmost point G no signal, not conducting of bidirectional triode thyristor, the power end no electric circuit of water pump, when capacitor C 3 is charged to a certain degree, (resistance of resistance R 2 is very little, 3 duration of charge of capacitor C are short, when while making bearing pin and sensitive switch no conflict, water tap is opened, water pump starts very soon), the voltage at its two ends is elevated to a certain degree, and making capacitor C 3 is high petential with the branch of connecting of resistance R 2, the output pin 3 of timer NE555P is low potential, through the non-optocoupler of MOC behind the door energising, its output pin communicates, and bidirectional triode thyristor is controlled utmost point G signal, bidirectional triode thyristor conducting, the power end energising of water pump.
The second: when water tap is closed, pump housing internal pressure increases, the screw thread passage port hydraulic pressure that is lower underframe in pressure switch increases, pressure bladder can push away bearing pin and rise, to bearing pin and sensitive switch conflict, sensitive switch normally opened contact is closed, capacitor C 3 is connected with resistance R 3 and in charged state, the voltage at capacitor C 3 two ends is zero, so that capacitor C 3 is low potential with the branch of connecting of resistance R 3, the output pin 3 of timer NE555P is high petential, through the non-optocoupler of MOC behind the door no electric circuit, its output pin is obstructed, bidirectional triode thyristor is controlled utmost point G no signal, not conducting of bidirectional triode thyristor, the power end no electric circuit of water pump, when capacitor C 3 is charged to a certain degree, (resistance of resistance R 3 is very large, 3 duration of charge of capacitor C are very long, when when bearing pin and sensitive switch are conflicted, water tap is closed, starting mode of pump needs for a long time), the voltage at its two ends is elevated to a certain degree, making capacitor C 3 is high petential with the branch of connecting of resistance R 2, the output pin 3 of timer NE555P is low potential, through the non-optocoupler of MOC behind the door energising, its output pin communicates, bidirectional triode thyristor is controlled utmost point G signal, bidirectional triode thyristor conducting, the power end energising of water pump, because sensitive switch normally opened contact is closed, the base stage energising of triode Q1, triode Q1 conducting, the electricity that capacitor C 3 is substituted the bad for the good can be through triode Q1, resistance R 4, the discharge end electric discharge of timer NE555P, the resistance of resistance R 4 is very little, so capacitor C is short 3 discharge times, water pump will soon power-off, this has just guaranteed that water pump is not for a long time under runnability under short-time running, prevent that impeller is stuck.
The invention has the beneficial effects as follows: can effectively prevent that self-priming pump is stuck.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is the overall structure schematic diagram of the utility model pressure switch.
Fig. 2 is the control circuit wiring diagram of the utility model pressure switch.
Embodiment
Fig. 1 is the overall structure schematic diagram of the utility model pressure switch.By figure, known, this pressure switch comprises lower underframe 1, pressure bladder 2, bearing pin 3, spring 4, middle underframe 5, sensitive switch fixed plate 6, upper underframe 8 and a control circuit; Described lower underframe 1 is connected with middle underframe 5, has a screw thread port 11 on it; On described middle underframe 5, there is a port 10; Described pressure bladder 2 is placed between lower underframe 1 and middle underframe 5, and by lower underframe 1 and middle underframe 5 compression fit, its lower end surface communicates with the screw thread port 11 of lower underframe 1, and upper-end surface communicates with the port 10 of middle underframe 5; Described bearing pin 3 is placed in the port 10 of middle underframe 5, and bearing pin 3 forms a sliding pair with middle underframe 5, and is placed in the upper-end surface of pressure bladder 2; Described spring 4 is placed in the port 10 of middle underframe 5, and spring 4 one end head on bearing pin 3, and the other end heads on middle underframe 5; Described upper underframe 8 is connected with middle underframe 5, has a hole 9 on it; Described sensitive switch fixed plate 6 is placed in the hole 9 of underframe 8, and is connected with upper underframe 8, has a sensitive switch 7 on it, is arranged on sensitive switch fixed plate 6 lower end surfaces, and faces bearing pin 3.
Fig. 2 is the control circuit wiring diagram of the utility model pressure switch.By figure, known, described control circuit comprises the capacitance-resistance step down type DC electrical source that capacitor C 1, capacitor C 2, resistance R 1, rectifier D1, voltage-stabiliser tube D2 form, the stuck starting circuit of waterproof pump that capacitor C 3, capacitor C 4, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, triode Q1, sensitive switch 7, NE555P timer 12, not gate 13, MOC optical coupled switch 14, bidirectional triode thyristor 15 form, resistance R 1 in capacitance-resistance step down type DC electrical source exchanges incoming end with one of capacitor C 1 parallel connection and one end access rectifier D1, the other end accesses extraneous power supply, another of rectifier D1 exchanges incoming end and also accesses extraneous power supply, voltage-stabiliser tube D2 is in parallel with capacitor C 2, the positive pole of voltage-stabiliser tube D2 connects the anodal DC output end of rectifier D1, and the negative pole of voltage-stabiliser tube D2 connects the negative pole DC output end of rectifier D1, resistance R 2 in the stuck starting circuit of waterproof pump, the normally-closed contact of sensitive switch 7 is connected with capacitor C 3 and is accessed capacitance-resistance step down type DC electrical source, wherein capacitor C 3 terminations enter the negative pole of capacitance-resistance step down type DC electrical source, the normally-closed contact termination of sensitive switch 7 enters the positive pole of capacitance-resistance step down type DC electrical source, resistance R 3 is connected with the normally opened contact of sensitive switch 7, and the positive pole of the normally opened contact of sensitive switch 7 access capacitance-resistance step down type DC electrical source, resistance R 3 terminations enter the branch of connecting of capacitor C 3 and resistance R 2, the connect collector electrode of branch access triode Q1 and the triggering pin 2 of NE555P timer 12 by capacitor C 3 with resistance R 2, threshold values pin 6, the emitter of triode Q1 is through the discharge end 7 of resistance R 4 access NE555P timers 12, the base stage access resistance R 3 of triode Q1 and the branch of connecting of the normally opened contact of sensitive switch 7, the reset pin 4 of NE555P timer 12, power pins 8 all accesses the positive pole of capacitance-resistance step down type DC electrical source, the negative pole of the grounding pin 1 access capacitance-resistance step down type DC electrical source of NE555P timer 12, the control pin 5 of NE555P timer 12 is through the negative pole of capacitor C 4 access capacitance-resistance step down type DC electrical source, the output pin 3 of NE555P timer 12 is through the anode pin 1 of not gate 13 access MOC optocouplers 14, the negative electrode pin 2 of MOC optocoupler 14 is through the negative pole of resistance R 5 access capacitance-resistance step down type DC electrical source, one output pin 4 of MOC optocoupler 14 is through the T2 utmost point of resistance R 6 access bidirectional triode thyristors 15, the control utmost point G. of another output pin 6 access bidirectional triode thyristors 15 of MOC optocoupler 14.
In addition to the implementation, the present invention also has other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation one-tenth, all drop in the protection domain of requirement of the present invention.
Claims (1)
1. the stuck pressure switch of waterproof pump, is characterized in that: this pressure switch comprises lower underframe, pressure bladder, bearing pin, spring, middle underframe, sensitive switch fixed plate, upper underframe and a control circuit, described lower underframe and middle underframe are connected, and have a screw thread port on it, on described middle underframe, there is a port, described pressure bladder is placed between lower underframe and middle underframe, and by lower underframe and middle underframe compression fit, its lower end surface communicates with the screw thread port of lower underframe, and upper-end surface communicates with the port of middle underframe, described bearing pin is placed in the port of middle underframe, and bearing pin and middle underframe form a sliding pair, and is placed in the upper-end surface of pressure bladder, described spring is placed in the port of middle underframe, and spring one end heads on bearing pin, and the other end heads on middle underframe, described upper underframe and middle underframe are connected, and have a hole on it, described sensitive switch fixed plate is placed in the hole of underframe, and is connected with upper underframe, has a sensitive switch on it, is arranged on sensitive switch fixed plate lower end surface, and faces bearing pin, described control circuit comprises the capacitance-resistance step down type DC electrical source that capacitor C 1, capacitor C 2, resistance R 1, rectifier D1, voltage-stabiliser tube D2 form, the stuck starting circuit of waterproof pump that capacitor C 3, capacitor C 4, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, triode Q1, sensitive switch, NE555P timer, not gate, MOC optical coupled switch, bidirectional triode thyristor form, resistance R 1 in capacitance-resistance step down type DC electrical source exchanges incoming end with one of capacitor C 1 parallel connection and one end access rectifier D1, the other end accesses extraneous power supply, another of rectifier D1 exchanges incoming end and also accesses extraneous power supply, voltage-stabiliser tube D2 is in parallel with capacitor C 2, the positive pole of voltage-stabiliser tube D2 connects the anodal DC output end of rectifier D1, and the negative pole of voltage-stabiliser tube D2 connects the negative pole DC output end of rectifier D1, resistance R 2 in the stuck starting circuit of waterproof pump, the normally-closed contact of sensitive switch is connected with capacitor C 3 and is accessed capacitance-resistance step down type DC electrical source, wherein capacitor C 3 terminations enter the negative pole of capacitance-resistance step down type DC electrical source, the normally-closed contact termination of sensitive switch enters the positive pole of capacitance-resistance step down type DC electrical source, resistance R 3 is connected with the normally opened contact of sensitive switch, and the positive pole of the normally opened contact of sensitive switch access capacitance-resistance step down type DC electrical source, resistance R 3 terminations enter the branch of connecting of capacitor C 3 and resistance R 2, the connect collector electrode of branch access triode Q1 and the triggering pin 2 of NE555P timer by capacitor C 3 with resistance R 2, threshold values pin 6, the emitter of triode Q1 is through the discharge end 7 of resistance R 4 access NE555P timers, the base stage access resistance R 3 of triode Q1 and the branch of connecting of the normally opened contact of sensitive switch, the reset pin 4 of NE555P timer, power pins 8 all accesses the positive pole of capacitance-resistance step down type DC electrical source, the negative pole of the grounding pin 1 access capacitance-resistance step down type DC electrical source of NE555P timer, the control pin 5 of NE555P timer is through the negative pole of capacitor C 4 access capacitance-resistance step down type DC electrical source, the output pin 3 of NE555P timer is through the anode pin 1 of not gate access MOC optocoupler, the negative electrode pin 2 of MOC optocoupler is through the negative pole of resistance R 5 access capacitance-resistance step down type DC electrical source, one output pin 4 of MOC optocoupler is through the T2 utmost point of resistance R 6 access bidirectional triode thyristors, the control utmost point G. of another output pin 6 access bidirectional triode thyristors of MOC optocoupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320586787.5U CN203516134U (en) | 2013-09-23 | 2013-09-23 | Pressure switch preventing water pump from sticking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320586787.5U CN203516134U (en) | 2013-09-23 | 2013-09-23 | Pressure switch preventing water pump from sticking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516134U true CN203516134U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320586787.5U Expired - Fee Related CN203516134U (en) | 2013-09-23 | 2013-09-23 | Pressure switch preventing water pump from sticking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516134U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889082A (en) * | 2015-01-26 | 2016-08-24 | 赵华勇 | Intelligent self-priming pump |
-
2013
- 2013-09-23 CN CN201320586787.5U patent/CN203516134U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889082A (en) * | 2015-01-26 | 2016-08-24 | 赵华勇 | Intelligent self-priming pump |
| CN105889082B (en) * | 2015-01-26 | 2018-05-11 | 浙江大元泵业股份有限公司 | A kind of intelligence self priming pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20160923 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |