CN2249779Y

CN2249779Y - Flushing controller for public toilet

Info

Publication number: CN2249779Y
Application number: CN 94217232
Authority: CN
Inventors: 许世祥
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-07-15
Filing date: 1994-07-15
Publication date: 1997-03-19
Anticipated expiration: 2004-07-15

Abstract

The utility model provides a controller suitable for ditch slot type public latrine washes. The water-saving control device comprises a water tank (8), a floating ball (9) and a water discharge electromagnetic valve (7), and is characterized by comprising an electronic control unit consisting of an in-place signal sensor (1), an in-place signal register (2), a time-base signal generator (3), an identification gate circuit (4), a monostable circuit (5) and an electromagnetic valve driver (6). The time interval between two times of washing is short, and even if the device is used by a person, the device is not washed; if the interval time of two times of water drainage is up, no one uses the function of water drainage. Good damage-proof performance, low cost and high water-saving rate.

Description

A kind of public lavatory flushing controller

The utility model relates to a kind of controller.Particularly be applicable to plough groove type public lavatory flushing controller.

The at present hydrocone type wc flushing cisterns that adopt in plough groove type public lavatory more, water resource waste is bigger, though the water saving of existing infrared type syringe, preventing destructing performance is relatively poor, cost is higher, thereby universal difficulty is bigger.

The purpose of this utility model is that for market provides a kind of not only water-saving result good, and cost is low, the slot type public lavatory flusher that preventing destructing performance is good.

The utility model is that the mode by Fig. 1 realizes;

As seen from the figure, electromagnetic valve (7), water tank (8), ball float (9), water inlet pipe (10), outlet pipe (11), feature are arranged is that a solenoid control unit of being made up of the signal transducer that puts in place (1), the sign register that puts in place (2), time-base generator (3), recognitiion gate circuit (4), monostable circuit (5) and electromagnetic valve driver (6) is arranged to this controller.

(3) be time-base generator, constitute, commutator pulse of per 1～90 minute (adjustable) output by digital integrated electronic circuit or Analogous Integrated Electronic Circuits.Adjust component values, change the pulse output time, promptly change twice and discharge water blanking time.

(1) is personnel's signal transducer that puts in place, it is a pyroelectric infrared sensor that the way of output is relay or transistor switch, or Doppler radar formula sensor, or infrared electro reflection sensor, or excusing from death ripple formula sensor, as long as there is the people to put in place, its output contact adhesive (constant open contact) or disconnection (constant close contact) are once, produce a signal output, expression has the human lavatory.Its relay output contact or transistor switch link to each other with the input of the sign register (2) that puts in place.

(2) being the sign register that puts in place, is an integrated circuit trigger with set and reset terminal.As d type flip flop, rest-set flip-flop, JK flip-flop etc.An input of its output and recognitiion gate circuit (4) links to each other.

(4) being the recognitiion gate circuit, is an AND circuit that two inputs are arranged or an OR circuit that is made of diode, also an integrated circuit two or more inputs are arranged with door or or door, the inclusive NAND door, or nor gate, or different not gate, or biconditional gate.One of them input is received the output of a sign register (2), the output of another input termination time-base generator (3), make two input signals compare identification, make it to have twice the flushing blanking time less than, do not wash even there is the people to use yet; Arrive blanking time if discharge water for twice, but unmanned the use do not discharge water yet.

(5) be monostable flipflop, be used for each discharge time of control electromagnetic valve (7).The output of recognitiion gate circuit (4) is by a differential circuit (sometimes also can), the input of order steady-state circuit (5), monostable circuit (5) is made of digital circuit or analog circuit, as: 5 of NE, CD4 528 etc., its time constant is 1～100 second.

The input of the output termination electromagnetic valve driver (6) of monostable circuit (5), described electromagnetic valve driver (6) constitutes (also electronic switch by triode and relay etc., belong to common technology, do not give unnecessary details), be used for controlling the on/off of the electromagnetic valve that discharges water (7) of water tank (8).

Its course of work is: after the signal transducer that puts in place (1) receives the signal in human lavatory, just have a signal to export to the sign register that puts in place (2), and deposited.Time-base generator (3) sends a timing signal at set intervals and sends recognitiion gate circuit (4) to, when signal is exported if put in place in the register (2), this timing signal just can pass through recognitiion gate circuit (4), trigger monostable circuit (5) upset, make electromagnetic valve driver (6) connect the power supply of electromagnetic valve (7), make electromagnetic valve (7) discharge water.After the water level of water tank (8) descended with the process that discharges water, the float valve (9) that links to each other with water inlet pipe (10) was opened.After monostable circuit (5) was recovered, discharging water stopped, and the water level of water tank (8) rises, and when arriving certain position, float valve (9) is closed water inlet pipe (10) under the effect of ball float, waited for discharging water next time.In monostable circuit (5) upset, the signal removal that puts in place of the sign register (2) that will put in place.

For preventing to destroy, the casing of sensor (1) and controller is fixed on the ceiling in lavatory or corridor or the eminence of wall.

Change the time constant of time-base generator (3), can be adjusted at the blanking time that twice discharges water under people's situation.

The time constant that changes monostable circuit (5) can change each discharge time of discharging valve (7).

According to the public lavatory flushing controller that the utility model is made, have twice flushing blanking time less than, do not wash even there is the people to use yet; Arrive blanking time if discharge water for twice, but the unmanned function that does not also discharge water of using.Preventing destructing performance is good, cost is low, water-saving result can be economized on water more than 80% by more common siphon water tank.

Description of drawings:

Accompanying drawing 1 is the utility model theory diagram, wherein:

1. signal transducer puts in place

2. sign register puts in place

3. time-base generator

4. recognitiion gate circuit

5. monostable circuit

6. electromagnetic valve driver

7. electromagnetic valve discharges water

8. water tank

9. float valve

10. water inlet pipe

11. outlet pipe

Optimum implementation

Fig. 2 thinks best embodiment for the inventor.

Time-base generator (3), ic 555 is connected into the time-base oscillation circuit, frequency divider CD4040 frequency division (available other circuit is made frequency divider certainly), the timing resistor of oscillating circuit is with variable resistance or toggle switch, make two of its output face mutually pulse between width can between 1～99 minute, adjust.Change resistance value, promptly change time constant, optionally make pulse signal of output in per 1～99 minute, represent that arrive twice blanking time that discharges water.As not needing long-time interval, frequency divider CD4040 can omit.

Signal transducer (2) puts in place, it is a pyroelectric infrared sensor (as the RD925 type) or a Doppler type radar sensor (reach China as Guangdong Zhong Shan and produce 9208 types) that relay contact output is arranged, or infrared electro reflection sensor, or excusing from death ripple formula sensor (as the RD40 type), because these several sensors are common technique, do not give unnecessary details.As long as someone puts in place, its output contact adhesive (constant open contact) of sensor or disconnection (constant close contact) once produce a signal output, and expression has the human lavatory.These several sensors also can use the output of electronic switch form, and effect is identical with relay output.Two when going to toilet a shared controller, only need output parallel connection with the signal transducer that puts in place more than two.

The sign register (2) that puts in place, the rest-set flip-flop that is made of NAND gate CD4011 constitutes.When the relay contact in the signal transducer that puts in place (1) or electronic switch had output, rest-set flip-flop was output as 1, will have human lavatory signal to deposit, and exports to recognitiion gate circuit (4).

Here, recognitiion gate circuit (4) is one two an input NAND gate circuit, when the rest-set flip-flop output is 1 (the human lavatory is promptly arranged), and when the output of time-base generator (3) has signal (arrive twice blanking time that discharges water), the NAND gate electricity has signal output, triggers monostable circuit (5) upset that 555 circuit constitute through RC differential circuit (sometimes can), and electromagnetic valve driver (6) is connected electromagnetic valve (7) coil circuit, electromagnetic valve discharges water, and enters the groove flushing through outlet pipe (11).Here, the time constant of monostable circuit (5) is between 1～600 second.After monostable circuit (5) resetted, discharging water finished.Because 555 driving forces are bigger, so can directly relay be inserted.

If electromagnetic valve (7) power consumption is little, it directly can be gone here and there in relay position, and relay is omitted.

555 not circuits that circuit output end connects are used in monostable circuit (5) upset, the signal removal that puts in place of the sign register (2) that will put in place.Reliable for guaranteeing, can add a RC circuit at the not gate input.

Electromagnetic valve should use 25MM above general solenoid valve or barrier film guide electromagnetic valve.

Claims

1. controller is washed in a public lavatory, controller especially for the flushing of plough groove type public lavatory, comprise water tank (8), float valve (9), the electromagnetic valve that discharges water (7), water inlet pipe (10), outlet pipe (11), it is characterized in that this public lavatory flushing controller has a solenoid control unit that is made of the signal transducer that puts in place (1), the sign register that puts in place (2), time-base generator (3), recognitiion gate circuit (4), monostable circuit (5), electromagnetic valve driver (6).

2. flushing controller in public lavatory as claimed in claim 1, it is characterized in that, the described signal transducer that puts in place (1), being one is fixed on the indoor ceiling of lavatory or the fixing pyroelectric infrared sensor of body of wall top, or Doppler radar formula sensor, or reflection type infrared sensor, or ultrasonic sensor, and the output of sensor is a relay contact or electronic switch.

3. flushing controller in public lavatory as claimed in claim 1 is characterized in that the described sign register that puts in place (2) is one the integrated circuit register that presets end and reset terminal, as rest-set flip-flop, JK flip-flop, d type flip flop etc.

4. flushing controller in public lavatory as claimed in claim 1, it is characterized in that, described time-base generator (3) is made up of oscillator and integrated circuit frequency divider that integrated circuit or discrete component constitute, and two of output face width between the pulse mutually between 1～99 minute.

5. flushing controller in public lavatory as claimed in claim 1 is characterized in that described identification social connections (4) are by forming with door or door, NAND gate, nor gate, XOR gate or biconditional gate in a diode gate circuit or the integrated gate circuit.

6. flushing controller in public lavatory as claimed in claim 1 is characterized in that described monostable circuit (5) is the monostable circuit that is made of digital circuit or analog circuit, and its time constant is between 1～600 second.