CN211979519U - Automatic control device for pressure liquid drainage - Google Patents
Automatic control device for pressure liquid drainage Download PDFInfo
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- CN211979519U CN211979519U CN202021187504.6U CN202021187504U CN211979519U CN 211979519 U CN211979519 U CN 211979519U CN 202021187504 U CN202021187504 U CN 202021187504U CN 211979519 U CN211979519 U CN 211979519U
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Abstract
The application relates to the field of automatic control liquid drainage, and discloses an automatic pressure liquid drainage control device which comprises a liquid level monitoring circuit, a water pump switching circuit and a first water pump starting circuit, wherein the liquid level monitoring circuit comprises a liquid level probe rod, the liquid level probe rod is provided with a first liquid level contact SL1 and a second liquid level contact SL2, the second liquid level SL2 is higher than the first liquid level SL1, and when the second liquid level contact SL2 is closed, a first water pump M1 runs; when the liquid level is between the first liquid level and the second liquid level, the first water pump M1 is continuously operated; when the liquid level drops to the first liquid level, the first water pump M1 is stopped, so that the first water pump M1 is automatically started and stopped through liquid level control. This application has the effect of opening according to liquid level change automatic control water pump and stop.
Description
Technical Field
The application relates to the technical field of automatic control of liquid drainage, in particular to an automatic control device for pressure liquid drainage.
Background
The automatic liquid discharge control device is often used in the situations of dirty liquid treatment, irrigation, circulating liquid cooling and the like, a water pump which is responsible for liquid discharge is arranged in a general liquid discharge control device, and a standby pump is started to discharge liquid after the water pump is damaged.
The water pump normally works under the general condition, but when liquid valve, pipeline etc. in flowing back automatic control device appear the damage and lead to the feed liquor volume to be greater than the flowing back volume, only can pass through the mode suggestion staff of reporting to the police and overhaul, the stand-by pump can't open according to liquid level automatic control this moment and stop.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pressure flowing back automatic control device to prior art exists, can open according to the liquid level change is automatic stops reserve water pump, and then reaches pressure flowing back automatic control's purpose.
The above utility model of this application aim at can realize through following technical scheme:
a pressure liquid drainage automatic control device comprises a live wire L1 and a zero wire N, wherein a liquid level monitoring loop, a water pump switching loop and a first water pump starting loop are connected between the live wire L1 and the zero wire N, the liquid level monitoring loop comprises a liquid level probe rod, the liquid level probe rod is provided with a first liquid level contact SL1 and a second liquid level contact SL2, the lowest liquid levels of the first liquid level contact SL1 and the second liquid level contact SL2 are respectively a first liquid level and a second liquid level, and the second liquid level is higher than the first liquid level;
the first liquid level contact SL1 and the second liquid level contact SL2 are connected in series, the other end of the first liquid level contact SL1 is connected in series with a live wire L1, the other end of the second liquid level contact SL2 is connected in series with a coil R1 of a liquid level intermediate relay, the other end of a coil R1 of the liquid level intermediate relay is connected in series with a zero line N, and the second liquid level contact SL2 is connected in parallel with a first normally open contact R1-1 of a coil R1 of the liquid level intermediate relay;
a coil KA1 of a first intermediate relay and a normally open contact KA1-1 thereof are further connected in series between the first liquid level contact SL1 and the zero line N, and a coil KA2 of a second intermediate relay and a normally open contact KA2-1 thereof are connected in parallel with the coil KA1 of the first intermediate relay and the normally open contact KA1-1 thereof;
the water pump switching loop comprises a coil KA3 of a third intermediate relay, one end of the coil KA3 of the third intermediate relay is connected with a zero line N, the other end of the coil KA3 of the third intermediate relay is connected with a normally open contact KA3-2 of the third intermediate relay in series, the other end of the normally open contact KA3-2 of the third intermediate relay is connected with a normally closed contact KA2-2 of a second intermediate relay in series, the other end of the normally closed contact KA2-2 of the second intermediate relay is connected with a live line L1, and the normally open contacts KA3-2 of the third intermediate relay are connected with the normally open contact KA1-3 of a first intermediate relay in parallel at two ends;
a normally closed contact KA3-1 of a third intermediate relay and a normally closed contact KA2-1 of a second intermediate relay are connected in series between the second liquid level contact SL2 and a coil KA1 of the first intermediate relay, and a normally open contact KA3-1 of the third intermediate relay and a normally closed contact KA1-1 of the first intermediate relay are connected in series between the second liquid level contact SL2 and a coil KA2 of the second intermediate relay;
the first water pump starting loop comprises a coil KA4 of a fourth intermediate relay, one end of the coil KA4 of the fourth intermediate relay is connected with a zero line N, the other end of the coil KA4 of the fourth intermediate relay is connected with a normally open contact KA1-4 of the first intermediate relay in series, and the other end of the normally open contact KA1-4 of the first intermediate relay is connected with a live line L1;
the automatic pressure liquid discharge control device further comprises a main circuit, the main circuit comprises a live wire L, the live wire L is connected with a normally open contact QF of a miniature circuit breaker, the other end of the normally open contact QF of the miniature circuit breaker is connected with a first fuse UF1 in series, the other end of the first fuse UF1 is connected with a normally open contact KA4-2 of a fourth intermediate relay in series, and the other end of the normally open contact KA4-2 of the fourth intermediate relay is connected with a first water pump M1 in series.
By adopting the technical scheme, when the liquid level reaches the preset second liquid level, the second liquid level contact SL2 is closed, and when the liquid level drops below the second liquid level, the second liquid level contact SL2 is opened.
When the second liquid level contact SL2 is closed, the liquid level intermediate relay is electrified and self-locked, meanwhile, the first intermediate relay is electrified and self-locked, the coil KA4 of the fourth intermediate relay is electrified to enable the normally open contact KA4-2 of the fourth intermediate relay to be closed, and the first water pump M1 operates;
after a period of time, when the liquid level was located between first liquid level and the second liquid level, second liquid level contact SL2 loses the electricity, because liquid level auxiliary relay, first auxiliary relay are in the state of getting electric by the auto-lock for the normally open contact KA4-2 of fourth auxiliary relay is in the closed condition in the main circuit, and first water pump M1 is continuous operation.
When the liquid level drops to first liquid level, first liquid level contact SL1 disconnection, the disconnection of liquid level monitoring return circuit makes the normally open contact KA1-4 disconnection of first intermediate relay, and then coil KA4 of fourth intermediate relay loses the electricity, and the normally open contact KA4-2 disconnection of coil KA4 of fourth intermediate relay in the main circuit, first water pump M1 stops to through the automatic start-stop of liquid level control first water pump M1.
The present application may be further configured in a preferred example to: the water pump starting circuit comprises a coil KA5 of a fifth intermediate relay, one end of the coil KA5 of the fifth intermediate relay is connected with a zero line N, the other end of the coil KA5 of the fifth intermediate relay is connected with a normally open contact KA2-2 of the second intermediate relay in series, and the other end of the normally open contact KA2-2 of the second intermediate relay is connected with a live line L1;
the main circuit further comprises a second fuse UF2, the second fuse UF2 is connected with the first fuse UF1 in parallel, the other end of the second fuse UF2 is connected with a normally open contact KA5-2 of a fifth intermediate relay in series, and the other end of the normally open contact KA5-2 of the fifth intermediate relay is connected with a second water pump M2 in series.
Through adopting above-mentioned technical scheme, when the liquid level reachd the second liquid level for the first time, first drainage pump M1 at first works, and third auxiliary relay gets electric and auto-lock, and when the liquid level dropped to first liquid level, first liquid level contact SL1 disconnection for coil KA1 of first auxiliary relay loses the electricity, and its normally closed contact KA1-1 is closed.
When the liquid level reaches the second liquid level again, because the third intermediate relay is in the state of being electrified due to the self-locking, the coil KA1 of the first intermediate relay is in the off state, the second liquid level contact SL2 is closed, the second intermediate relay is in parallel self-locking, the coil KA5 of the fifth intermediate relay is electrified due to the closing of the normally open contact KA2-2 of the fifth intermediate relay in the main loop, the normally open contact KA5-2 of the coil KA5 of the fifth intermediate relay in the main loop is closed, the second water pump M2 runs, and the first water pump M1 and the second water pump M2 are enabled to automatically and circularly work in a reciprocating mode according to the liquid level change by means of the water pump switching loop.
The present application may be further configured in a preferred example to: still include the delay circuit, the delay circuit includes time delay relay, time delay relay's coil KT1 one end is connected with zero line N, and the other end is established ties and is had liquid level auxiliary relay's normally open contact R1-2, be equipped with time delay relay's normally open contact KT1-2 between fourth auxiliary relay's coil KA4 and fifth auxiliary relay's coil KA 5.
Through adopting above-mentioned technical scheme, before pressure flowing back automatic control device work, set for time delay relay KT 1's timing time, when the liquid level reachd the second liquid level, assume that first water pump M1 is in operating condition earlier, liquid level relay's normally open contact R1-2 is closed, time delay relay begins the timing, when the liquid level did not descend to predetermineeing first liquid level in the settlement time quantum, time delay relay action and its normally open contact KT1-2 are closed, make second water pump M2 also get into operating condition, and then according to the liquid level change, two water pumps of automatic control worked simultaneously when the liquid level lasts higher.
The present application may be further configured in a preferred example to: still include trouble overflow alarm circuit, trouble overflow alarm circuit includes the normally open contact KT1-1 of the time delay relay who is connected with live wire L1, the normally open contact KT1-1 other end is established ties and is had bee calling organ HAB, the bee calling organ HAB other end is connected with zero line N.
By adopting the technical scheme, when the liquid level reaches the second liquid level and lasts for a certain time, the normally open contact KT1-1 of the time delay relay is closed, and the buzzer HAB makes a sound to remind a worker to check the automatic pressure liquid discharge control device.
The present application may be further configured in a preferred example to: the overflow circuit comprises a coil KA6 of a sixth intermediate relay, one end of the coil KA6 of the sixth intermediate relay is connected with a zero line N, the other end of the coil KA6 of the sixth intermediate relay is connected with a third liquid level contact SL3 in series, the closed lowest liquid level of the third liquid level contact SL3 is a third liquid level, the third liquid level is higher than the second liquid level, the other end of the third liquid level contact SL3 is connected with a first liquid level contact SL1 in series, and the two ends of the third liquid level contact SL3 are connected with a normally open contact KA6-1 of the sixth intermediate relay in parallel;
and a normally open contact KA6-3 of a sixth intermediate relay is connected in series between the coil KA4 of the fourth intermediate relay and the coil KA5 of the fifth intermediate relay.
Through adopting above-mentioned technical scheme, when the feed liquor volume is greater than the leakage fluid volume, the liquid level reachs the third liquid level, and third liquid level contact SL3 is closed, and sixth intermediate relay's coil KA6 circular telegram, and sixth intermediate relay gets electric auto-lock simultaneously, and sixth intermediate relay's normally open contact KA6-3 is closed, then through the outside flowing back of liquid level automatic control first water pump M1 and second water pump M2 simultaneous working.
The present application may be further configured in a preferred example to: still include the water valve return circuit, the water valve return circuit includes electronic water valve, electronic water valve one end is connected with zero line N, and the other end is established ties and is had sixth auxiliary relay's normally closed contact KA6-1, sixth auxiliary relay's normally closed contact KA6-1 other end and live wire L1 are connected.
By adopting the technical scheme, when the liquid level reaches the preset third liquid level, the coil KA6 of the sixth intermediate relay is electrified, and the normally closed contact KA6-1 of the sixth intermediate relay is disconnected, so that the electric water valve is controlled to be closed, liquid supply is stopped, and liquid overflow is prevented.
The present application may be further configured in a preferred example to: the leakage alarm circuit is connected with a 24V direct-current power supply and comprises a coil KA7 of a seventh intermediate relay connected with the direct-current power supply in series, and a normally open contact S1 of the leakage alarm is connected with a coil KA7 of the seventh intermediate relay in series;
the water valve loop further comprises a normally closed contact KA7 of a seventh intermediate relay, and the normally closed contact KA7 of the seventh intermediate relay is connected between the normally closed contact KA6-1 of the sixth intermediate relay and the electric water valve in series.
By adopting the technical scheme, when the liquid leakage alarm detects liquid, the liquid leakage alarm gives an alarm, the normally open contact S1 of the liquid leakage alarm is closed, the coil KA7 of the seventh intermediate relay is electrified, and the normally closed contact KA7 of the seventh intermediate relay is disconnected, so that the electric water valve is automatically powered off, the liquid supply is stopped, and the possibility of overflow is reduced.
The present application may be further configured in a preferred example to: still include trouble overflow alarm circuit, trouble overflow alarm circuit includes the normally open contact KA6-2 of the sixth intermediate relay who is connected with live wire L1, the normally open contact KA6-2 other end of sixth intermediate relay is established ties and is had bee calling organ HAB, the bee calling organ HAB other end is connected with zero line N.
Through adopting above-mentioned technical scheme, when the liquid level reachd and predetermine the third liquid level, sixth intermediate relay's normally open contact KA6-2 is closed, and buzzer HAB sends the sound and reminds the staff to inspect pressure flowing back automatic control device.
The present application may be further configured in a preferred example to: still include amortization return circuit, the amortization return circuit includes the normally open button SF3 with the normally open contact KA6-2 series connection of sixth intermediate relay, the normally open button SF3 other end is established ties and is had eighth intermediate relay's coil KA8, eighth intermediate relay's coil KA8 other end is connected with zero line N, normally open button SF3 both ends are parallelly connected with eighth intermediate relay's normally open contact KA8-1, it has eighth intermediate relay's normally closed contact KA8-1 to establish ties between sixth intermediate relay's normally open contact KA6-2 and the bee calling organ HAB.
Through adopting above-mentioned technical scheme, after the staff heared buzzer HAB's chimes of doom, the manual closed normally open button SF3 of accessible for eighth auxiliary relay gets electric auto-lock, and the normally closed contact KA8-1 disconnection of eighth auxiliary relay makes buzzer HAB outage simultaneously, and then silences buzzer HAB.
The present application may be further configured in a preferred example to: a SAC (sample consensus) change-over switch capable of changing between automatic operation and manual operation is arranged between the first water pump starting circuit and a firing line L1, the first water pump starting circuit further comprises a normally closed button SS1 connected with the firing line in series, the other end of the normally closed button SS1 is connected with a normally open contact SF1 in series, the other end of the normally open contact SF1 is connected with a coil KA4 of a fourth intermediate relay in series, and the normally open contact SF1 is connected with a normally open contact KA4-1 of the fourth intermediate relay in parallel;
the second water pump starting circuit still includes the normally closed button SS2 of establishing ties with the live wire, normally closed button SS2 other end is established ties there is normally open contact SF2, the normally open contact SF2 other end establishes ties with fifth relay's coil KA5, normally open contact SF2 connects in parallel and is equipped with fifth relay's normally open contact KA 5-1.
Through adopting above-mentioned technical scheme, place the SAC change over switch in manual position, the point is pressed normally open contact SF1, normally open contact SF2 button, fourth intermediate relay's coil KA4, the electricity self-locking is got to the fifth intermediate relay, main loop fourth intermediate relay's normally open contact KA4-2, the normally open contact KA5-2 of fifth intermediate relay is closed, first water pump M1, second water pump M2 operation, point is pressed normally open contact SF1 again, normally open contact SF2 button, steerable first water pump M1, second water pump M2 stops, thereby make first water pump M1, also manual control of second water pump M2 automatic control's in-process.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the second liquid level contact SL2 is closed, the liquid level intermediate relay and the first intermediate relay are both electrified and self-locked, the coil KA4 of the fourth intermediate relay is electrified to enable the normally open contact KA4-2 of the fourth intermediate relay to be closed, the first water pump M1 operates, after a period of time, when the liquid level is between the first liquid level and the second liquid level, the normally open contact KA4-2 of the fourth intermediate relay in the main circuit is in a closed state, the first water pump M1 continuously operates, when the liquid level drops to the first liquid level, the first liquid level contact SL1 is disconnected, the liquid level monitoring loop is disconnected to enable the normally open contact KA1-4 of the first intermediate relay to be disconnected, then the coil KA4 of the fourth intermediate relay is deenergized, the normally open contact KA4-2 of the coil KA4 of the fourth intermediate relay in the main circuit is disconnected, the first water pump M1 stops, and the first water pump M1 is automatically started;
2. when the liquid level reaches a second liquid level for the first time, the first drainage pump M1 works firstly, when the liquid level reaches the second liquid level again, the third intermediate relay is in an electrified state due to self-locking, a normally open contact KA5-2 of a coil KA5 of a fifth intermediate relay in the main loop is closed, the second water pump M2 runs, and therefore the first water pump M1 and the second water pump M2 automatically and circularly work in a reciprocating mode according to liquid level changes by means of a water pump switching loop;
3. before pressure flowing back automatic control device work, set for the timing time of time delay relay KT1, when the liquid level reachd the second liquid level, suppose that first water pump M1 is in operating condition earlier, the normally open contact R1-2 of liquid level auxiliary relay is closed, time delay relay begins the timing, when the liquid level did not descend to predetermineeing first liquid level in the settlement time quantum, time delay relay action and its normally open contact KT1-2 are closed, make second water pump M2 also get into operating condition, and then according to the liquid level change, two water pumps of automatic control worked simultaneously when the liquid level lasts higher.
Drawings
FIG. 1 is a schematic diagram of a partial circuit of an automatic pressure discharge control device;
FIG. 2 is a schematic diagram of a primary circuit;
FIG. 3 is a schematic diagram of an automatic control circuit for pressure drainage;
fig. 4 is a schematic diagram of a leakage alarm circuit.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Referring to fig. 1, the pressure liquid discharge automatic control device disclosed in the present application includes a live line L, a live line L1, and a zero line N, wherein a liquid level monitoring circuit, a water pump switching circuit, a first water pump starting circuit, a second water pump starting circuit, a delay circuit, a fault overflow alarm circuit, an overflow circuit, a liquid leakage alarm circuit, a water valve circuit, and a silencing circuit are connected between the live line L1 and the zero line N; and a main loop is connected between the live wire L and the ground wire.
An indicator light HR1 is also connected in series between the live wire L1 and the zero wire N, when a voltage difference exists between the live wire L1 and the zero wire N, the indicator light HR1 is on, and the model of the indicator light HR1 is 41-7 GZ. The liquid level monitoring loop comprises a liquid level probe rod, the liquid level probe rod is provided with a first liquid level contact SL1 and a second liquid level contact SL2, the first liquid level contact SL1 is a normally closed contact, and the second liquid level contact SL2 is a normally open contact. And the lowest liquid levels at which the first liquid level contact SL1 and the second liquid level contact SL2 are closed are a first liquid level and a second liquid level, respectively, and the second liquid level is higher than the first liquid level.
The first level contact SL1 is closed when the liquid level reaches a first level and the first level contact SL1 is open when the liquid level falls below the first level. The second level contact SL2 is closed when the liquid level reaches a preset second level, and the second level contact SL2 is open when the liquid level drops below the second level.
The liquid level relay is characterized in that a first liquid level contact SL1 and a second liquid level contact SL2 are connected in series, the other end of the first liquid level contact SL1 is connected in series with a live wire L1, the other end of the second liquid level contact SL2 is connected in series with a coil R1 of a liquid level relay, the other end of the coil R1 of the liquid level relay is connected in series with a zero wire N, and the second liquid level contact SL2 is connected in parallel with a normally-open contact R1-1 of the liquid level relay.
A coil KA1 of a first intermediate relay and a normally open contact KA1-1 of the first intermediate relay are also connected in series between the first liquid level contact SL1 and the zero line N; the coil KA1 and the normally open contact KA1-1 of the first intermediate relay are connected in parallel with the coil KA2 and the normally open contact KA2-2 of the second intermediate relay.
The water pump switching loop comprises a coil KA3 of a third intermediate relay, one end of the coil KA3 of the third intermediate relay is connected with a zero line N, and the other end of the coil KA3 of the third intermediate relay is connected with a normally open contact KA3-2 of the third intermediate relay in series; the other end of the normally open contact KA3-2 of the third intermediate relay is connected in series with the normally closed contact KA2-2 of the second intermediate relay; the other end of a normally closed contact KA2-2 of the second intermediate relay is connected with a live wire L1; and the two ends of the normally open contact KA3-2 of the third intermediate relay are connected in parallel with the normally open contact KA1-3 of the first intermediate relay.
A normally closed contact KA3-1 of a third intermediate relay and a normally closed contact KA2-1 of a second intermediate relay are connected in series between the second liquid level contact SL2 and a coil KA1 of the first intermediate relay; a normally open contact KA3-1 of a third intermediate relay and a normally closed contact KA1-1 of a first intermediate relay are connected between the second liquid level contact SL2 and a coil KA2 of the second intermediate relay in series.
The first water pump starting circuit comprises a coil KA4 of a fourth intermediate relay, one end of the coil KA4 of the fourth intermediate relay is connected with a zero line N, the other end of the coil KA4 of the fourth intermediate relay is connected with a normally open contact KA1-4 of the first intermediate relay in series, and the other end of the normally open contact KA1-4 of the first intermediate relay is connected with a live line L1. And an indicator lamp HG1 is connected in parallel at two ends of the coil KA4 of the fourth intermediate relay, the model of the indicator lamp HG1 is 41-7GZ, and when the coil KA4 of the fourth intermediate relay is electrified, the indicator lamp HG1 is on.
The second water pump starting loop comprises a coil KA5 of a fifth intermediate relay, one end of the coil KA5 of the fifth intermediate relay is connected with a zero line N, the other end of the coil KA5 of the fifth intermediate relay is connected with a normally open contact KA2-2 of the second intermediate relay in series, and the other end of the normally open contact KA2-2 of the second intermediate relay is connected with a live line L1. And an indicator lamp HG2 is connected in parallel at two ends of the coil KA5 of the fifth intermediate relay, the model of the indicator lamp HG2 is 41-7GZ, and when the coil KA5 of the fifth intermediate relay is electrified, the indicator lamp HG2 is on.
Referring to fig. 2, in the main loop, a live wire L is connected with a normally open contact QF of a micro circuit breaker, the other end of the normally open contact QF of the micro circuit breaker is connected in series with a first fuse UF1, the other end of the first fuse UF1 is connected in series with a normally open contact KA4-2 of a fourth intermediate relay, and the other end of the normally open contact KA4-2 of the fourth intermediate relay is connected in series with a first water pump M1. The main circuit also comprises a second fuse UF2 connected with the first fuse UF1 in parallel, one end of the second fuse UF2 is connected with a normally open contact KA5-2 of a fifth intermediate relay in series, and the other end of the normally open contact KA5-2 of the fifth intermediate relay is connected with a second water pump M2 in series.
Wherein the model of the miniature circuit breaker is S251S C10; the model of the fuse is RT 18-6; the model of the water pump is KP 125.
Referring to fig. 1, a SAC transfer switch capable of being switched between automatic operation and manual operation is arranged between a first water pump starting circuit and a live wire L1, the first water pump starting circuit further comprises a normally closed button SS1 connected with the live wire L1 in series, the other end of the normally closed button SS1 is connected with a normally open contact SF1 in series, the other end of the normally open contact SF1 is connected with a coil KA4 of a fourth intermediate relay in series, and the normally open contact SF1 is connected with a normally open contact KA4-1 of the fourth intermediate relay in parallel;
the automatic and manual mode is also controlled through a SAC (sample-and-bag) change-over switch between the second water pump starting circuit and a live wire L1, the second water pump starting circuit further comprises a normally closed button SS2 connected with the live wire L1 in series, the other end of the normally closed button SS2 is connected with a normally open contact SF2 in series, the other end of the normally open contact SF2 is connected with a coil KA5 of a fifth intermediate relay in series, and the normally open contact SF2 is provided with a normally open contact KA5-1 of the fifth intermediate relay in parallel. When the SAC change-over switch is in a manual control state, 3, 4, 7 and 8 are switched on and switched off, and 1, 2, 5 and 6 are switched off; when the SAC change-over switch is in the automatic control state, 1, 2 and 5, 6 are all closed, and 3, 4 and 7, 8 are all open.
The model of the SAC change-over switch is XB2BD 33C; the model of the normally open button is XB2EA 131; the normally closed button is type XB2EA 142.
Referring to fig. 1 and 2, when the automatic pressure liquid discharge control device is used, if 3, 4, 7 and 8 are connected, the SAC transfer switch is located at a manual position, a normally open contact SF1 and a normally open contact SF2 button are pressed, the fourth intermediate relay and the fifth intermediate relay are both electrified and self-locked, the normally open contact KA4-2 of the fourth intermediate relay and the normally open contact KA5-2 of the fifth intermediate relay of the main circuit are closed, and the first water pump M1 and the second water pump M2 run. The buttons of the normally open contact SF1 and the normally open contact SF2 are pressed again, the coil KA4 of the fourth intermediate relay and the coil KA5 of the fifth intermediate relay are powered off, the normally open contact KA4-2 of the fourth intermediate relay and the normally open contact KA5-2 of the fifth intermediate relay in the main circuit are disconnected, the first water pump M1 and the second water pump M2 are stopped, and therefore the first water pump M1 and the second water pump M2 are manually controlled to be started and stopped.
1, 2, 5 and 6 are switched on, the SAC change-over switch is located at an automatic position at the moment, when the liquid level reaches a preset second liquid level, a second liquid level contact SL2 is closed, a liquid level intermediate relay is electrified and self-locked, and meanwhile, a first intermediate relay is electrified and self-locked; a normally open contact KA1-3 of the first intermediate relay is closed, and a normally closed contact KA1-1 of the first intermediate relay is opened, so that a coil KA2 of the second intermediate relay is in a power-off state; then the third intermediate relay is electrified and self-locked, a normally closed contact KA3-1 is opened, and a normally open contact KA3-1 is closed; the normally open contact KA1-4 of the first intermediate relay is closed, the coil KA4 of the fourth intermediate relay is electrified, the normally open contact KA4-2 of the fourth intermediate relay in the main circuit is closed, and the first water pump M1 operates firstly.
When the liquid level is reduced to a position between the first liquid level and the second liquid level, the second liquid level contact SL2 loses power, the liquid level intermediate relay is in a power-on state due to self-locking, the first intermediate relay is in a power-on state due to self-locking, so that the normally open contact KA4-2 of the fourth intermediate relay in the main circuit is in a closed state, and the first water pump M1 continuously operates.
When the liquid level is reduced to be lower than the first liquid level, the first liquid level contact SL1 is disconnected, the coil KA1 of the first intermediate relay loses power, so that the normally open contact KA1-1 of the first intermediate relay is disconnected, the normally closed contact KA1-1 is closed, and the third intermediate relay is in a power-on state due to self-locking; the normally open contact KA1-4 of the first intermediate relay is disconnected, the coil KA4 of the fourth intermediate relay loses power, the normally open contact KA4-2 of the coil KA4 of the fourth intermediate relay in the main circuit is disconnected, and the first water pump M1 stops.
When the liquid level reaches the second liquid level again, because the third intermediate relay is in the power-on state due to self-locking, the normally closed contact KA3-1 of the third intermediate relay is in the off state, the coil KA1 of the first intermediate relay is in the power-off state, the second liquid level contact SL2 is closed at the moment, the normally closed contact KA1-1 of the first intermediate relay is closed, the normally open contact KA3-1 of the third intermediate relay is closed, the second intermediate relay is powered on and self-locked, the normally open contact KA2-2 of the second intermediate relay is closed, the coil KA5 of the fifth intermediate relay is powered on, the normally open contact KA5-2 of the coil KA5 of the fifth intermediate relay in the main circuit is closed, and the second water pump M2 operates.
When the liquid level is lowered to be lower than the first liquid level, the first liquid level contact SL1 is disconnected, the coil KA2 of the second intermediate relay is powered off to enable the normally open contact KA2-1 of the second intermediate relay to be disconnected, meanwhile, the normally open contact KA2-1 of the second intermediate relay is powered off to enable the coil KA5 of the fifth intermediate relay to be powered off, the normally open contact KA5-2 in the main circuit is disconnected, the second water pump M2 stops, and therefore the first water pump M1 and the second water pump M2 work in a reciprocating mode.
Referring to fig. 3, the delay loop comprises a delay relay, one end of a coil KT1 of the delay relay is connected with a zero line N, the other end of the coil KT1 of the delay relay is connected with a normally open contact R1-2 of the liquid level intermediate relay in series, and a normally open contact KT1-2 of the delay relay is arranged between a coil KA4 of the fourth intermediate relay and a coil KA5 of the fifth intermediate relay. The model of the time delay relay is H3Y-2.
The fault overflow alarm loop comprises a normally open contact KT1-1 of a delay relay connected with a live wire L1, the other end of the normally open contact KT1-1 is connected with a buzzer HAB with the model number of 41-2DY in series, and the other end of the buzzer HAB is connected with a zero line N.
Before pressure flowing back automatic control device work, set for the timing time of time delay relay KT1, when the liquid level reachd the second liquid level, supposing that first water pump M1 was in operating condition earlier, the coil R1 of liquid level auxiliary relay gets electric and makes its normally open contact R1-2 closed, time delay relay begins to time, when the liquid level did not descend to predetermineeing first liquid level in the settlement time quantum, time delay relay action and its normally open contact KT1-2 are closed, make second water pump M2 also get into operating condition, and then two water pump simultaneous workings. Meanwhile, a normally open contact KT1-1 of the time delay relay is closed, and a buzzer HAB makes a sound to remind a worker to check the automatic pressure drainage control device.
The overflow loop comprises a coil KA6 of a sixth intermediate relay, one end of the coil KA6 of the sixth intermediate relay is connected with a zero line N, the other end of the coil KA6 of the sixth intermediate relay is connected with a third liquid level contact SL3 in series, the lowest closed liquid level of the third liquid level contact SL3 is a third liquid level, and the third liquid level is higher than the second liquid level. The other end of the third liquid level contact SL3 is connected in series with the first liquid level contact SL1, and the two ends of the third liquid level contact SL3 are connected in parallel with a normally open contact KA6-1 of a sixth intermediate relay. And a normally open contact KA6-3 of the sixth intermediate relay is connected in series between the coil KA4 of the fourth intermediate relay and the coil KA5 of the fifth intermediate relay.
Referring to fig. 3 and 4, the water valve loop comprises an electric water valve, one end of the electric water valve is connected with a zero line N, the other end of the electric water valve is connected with a normally closed contact KA6-1 of a sixth intermediate relay in series, and the other end of the normally closed contact KA6-1 of the sixth intermediate relay is connected with a live line L1. The liquid leakage alarm loop is connected with a 24V direct-current power supply, the liquid leakage alarm loop comprises a coil KA7 of a seventh intermediate relay connected with the direct-current power supply in series, a normally open contact S1 of the liquid leakage alarm is connected with a coil KA7 of the seventh intermediate relay in series, and the liquid leakage alarm is used for detecting whether the electric water valve leaks water.
Referring to fig. 3, the water valve loop further comprises a normally closed contact KA7 of a seventh intermediate relay, and the normally closed contact KA7 of the seventh intermediate relay is connected in series between the normally closed contact KA6-1 of the sixth intermediate relay and the electric water valve.
Referring to fig. 3 and 4, when the leakage alarm detects that the electric water valve leaks water, the leakage alarm gives an alarm and the normally open contact S1 is closed, and the seventh intermediate relay is powered on to open the normally closed contact KA7, so that the electric water valve is closed and water supply is stopped.
Referring to fig. 3, the fault overflow alarm loop further comprises a normally open contact KA6-2 of a sixth intermediate relay connected with a live wire L1, and the other end of the normally open contact KA6-2 of the sixth intermediate relay is connected with a buzzer HAB in series.
The silencing loop comprises a normally open button SF3 connected with a normally open contact KA6-2 of a sixth intermediate relay in series, the other end of the normally open button SF3 is connected with a coil KA8 of the eighth intermediate relay in series, the other end of the coil KA8 of the eighth intermediate relay is connected with a zero line N, the two ends of the normally open button SF3 are connected with a normally open contact KA8-1 of the eighth intermediate relay in parallel, and a normally closed contact KA8-1 of the eighth intermediate relay is connected between the normally open contact KA6-2 of the sixth intermediate relay and a buzzer HAB in series.
When any one of the normally open contact KA6-2 of the sixth intermediate relay or the normally open contact KT1-1 of the delay relay is closed, the indicator lamp HY1 is lightened, and the type of the indicator lamp HY1 is 41-7 GZ.
When the liquid level reaches a third liquid level when the liquid inlet amount is larger than the liquid discharge amount, the third liquid level contact SL3 is closed, the sixth intermediate relay is electrified and self-locked, and the normally open contact KA6-3 of the sixth intermediate relay is closed, so that the first water pump M1 and the second water pump M2 work simultaneously to discharge liquid outwards; a normally closed contact KA6-1 of the sixth intermediate relay is disconnected, so that the electric water valve is closed, and liquid supply is stopped; and a normally open contact KA6-2 of the sixth intermediate relay is closed, and a buzzer HAB makes a sound to remind a worker to check the automatic pressure drainage control device.
After the staff hears buzzer HAB's chimes of doom, the accessible is manual closed normally open button SF3 for eighth auxiliary relay gets electric and auto-lock, and the normally closed contact KA8-1 disconnection of eighth auxiliary relay simultaneously makes buzzer HAB outage, and then silences buzzer HAB.
Referring to fig. 3 and 4, when the fault of the electric water valve is eliminated and the liquid level is lower than a preset first liquid level, the normally open contact S1 of the leakage alarm is opened, and the coil KA7 of the seventh intermediate relay is electrified to close the normally closed contact KA 7; and at the moment, the first liquid level contact SL1 is disconnected, the coil KA6 of the sixth intermediate relay loses power, so that the normally closed contact KA6-1 of the sixth intermediate relay is closed, the electric water valve is opened again, and water supply is continued.
The intermediate relays in the application are all MY2.4NJ in model.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a pressure drainage automatic control device, includes live wire L1, zero line N, its characterized in that: a liquid level monitoring loop, a water pump switching loop and a first water pump starting loop are connected between the live line L1 and the zero line N, the liquid level monitoring loop comprises a liquid level probe rod, the liquid level probe rod is provided with a first liquid level contact SL1 and a second liquid level contact SL2, the closed lowest liquid levels of the first liquid level contact SL1 and the second liquid level contact SL2 are respectively a first liquid level and a second liquid level, and the second liquid level is higher than the first liquid level;
the first liquid level contact SL1 and the second liquid level contact SL2 are connected in series, the other end of the first liquid level contact SL1 is connected in series with a live wire L1, the other end of the second liquid level contact SL2 is connected in series with a coil R1 of a liquid level intermediate relay, the other end of a coil R1 of the liquid level intermediate relay is connected in series with a zero line N, and the second liquid level contact SL2 is connected in parallel with a first normally open contact R1-1 of a coil R1 of the liquid level intermediate relay;
a coil KA1 of a first intermediate relay and a normally open contact KA1-1 thereof are further connected in series between the first liquid level contact SL1 and the zero line N, and a coil KA2 of a second intermediate relay and a normally open contact KA2-1 thereof are connected in parallel with the coil KA1 of the first intermediate relay and the normally open contact KA1-1 thereof;
the water pump switching loop comprises a coil KA3 of a third intermediate relay, one end of the coil KA3 of the third intermediate relay is connected with a zero line N, the other end of the coil KA3 of the third intermediate relay is connected with a normally open contact KA3-2 of the third intermediate relay in series, the other end of the normally open contact KA3-2 of the third intermediate relay is connected with a normally closed contact KA2-2 of a second intermediate relay in series, the other end of the normally closed contact KA2-2 of the second intermediate relay is connected with a live line L1, and the normally open contacts KA3-2 of the third intermediate relay are connected with the normally open contact KA1-3 of a first intermediate relay in parallel at two ends;
a normally closed contact KA3-1 of a third intermediate relay and a normally closed contact KA2-1 of a second intermediate relay are connected in series between the second liquid level contact SL2 and a coil KA1 of the first intermediate relay, and a normally open contact KA3-1 of the third intermediate relay and a normally closed contact KA1-1 of the first intermediate relay are connected in series between the second liquid level contact SL2 and a coil KA2 of the second intermediate relay;
the first water pump starting loop comprises a coil KA4 of a fourth intermediate relay, one end of the coil KA4 of the fourth intermediate relay is connected with a zero line N, the other end of the coil KA4 of the fourth intermediate relay is connected with a normally open contact KA1-4 of the first intermediate relay in series, and the other end of the normally open contact KA1-4 of the first intermediate relay is connected with a live line L1;
the automatic pressure liquid discharge control device further comprises a main circuit, the main circuit comprises a live wire L, the live wire L is connected with a normally open contact QF of a miniature circuit breaker, the other end of the normally open contact QF of the miniature circuit breaker is connected with a first fuse UF1 in series, the other end of the first fuse UF1 is connected with a normally open contact KA4-2 of a fourth intermediate relay in series, and the other end of the normally open contact KA4-2 of the fourth intermediate relay is connected with a first water pump M1 in series.
2. The automatic control device for pressure liquid discharge as claimed in claim 1, wherein: the water pump starting circuit comprises a coil KA5 of a fifth intermediate relay, one end of the coil KA5 of the fifth intermediate relay is connected with a zero line N, the other end of the coil KA5 of the fifth intermediate relay is connected with a normally open contact KA2-2 of the second intermediate relay in series, and the other end of the normally open contact KA2-2 of the second intermediate relay is connected with a live line L1;
the main circuit further comprises a second fuse UF2, the second fuse UF2 is connected with the first fuse UF1 in parallel, the other end of the second fuse UF2 is connected with a normally open contact KA5-2 of a fifth intermediate relay in series, and the other end of the normally open contact KA5-2 of the fifth intermediate relay is connected with a second water pump M2 in series.
3. The automatic control device for pressure liquid discharge as claimed in claim 2, wherein: still include the delay circuit, the delay circuit includes time delay relay, time delay relay's coil KT1 one end is connected with zero line N, and the other end is established ties and is had liquid level auxiliary relay's normally open contact R1-2, be equipped with time delay relay's normally open contact KT1-2 between fourth auxiliary relay's coil KA4 and fifth auxiliary relay's coil KA 5.
4. The automatic control device for pressure liquid discharge as claimed in claim 3, wherein: still include trouble overflow alarm circuit, trouble overflow alarm circuit includes the normally open contact KT1-1 of the time delay relay who is connected with live wire L1, the normally open contact KT1-1 other end is established ties and is had bee calling organ HAB, the bee calling organ HAB other end is connected with zero line N.
5. The automatic control device for pressure liquid discharge according to any one of claims 1 to 4, characterized in that: the overflow circuit comprises a coil KA6 of a sixth intermediate relay, one end of the coil KA6 of the sixth intermediate relay is connected with a zero line N, the other end of the coil KA6 of the sixth intermediate relay is connected with a third liquid level contact SL3 in series, the closed lowest liquid level of the third liquid level contact SL3 is a third liquid level, the third liquid level is higher than the second liquid level, the other end of the third liquid level contact SL3 is connected with a first liquid level contact SL1 in series, and the two ends of the third liquid level contact SL3 are connected with a normally open contact KA6-1 of the sixth intermediate relay in parallel;
and a normally open contact KA6-3 of a sixth intermediate relay is connected in series between the coil KA4 of the fourth intermediate relay and the coil KA5 of the fifth intermediate relay.
6. The automatic control device for pressure liquid discharge as claimed in claim 5, wherein: still include the water valve return circuit, the water valve return circuit includes electronic water valve, electronic water valve one end is connected with zero line N, and the other end is established ties and is had sixth auxiliary relay's normally closed contact KA6-1, sixth auxiliary relay's normally closed contact KA6-1 other end and live wire L1 are connected.
7. The automatic control device for pressure liquid discharge as claimed in claim 6, wherein: the leakage alarm circuit is connected with a 24V direct-current power supply and comprises a coil KA7 of a seventh intermediate relay connected with the direct-current power supply in series, and a normally open contact S1 of the leakage alarm is connected with a coil KA7 of the seventh intermediate relay in series;
the water valve loop further comprises a normally closed contact KA7 of a seventh intermediate relay, and the normally closed contact KA7 of the seventh intermediate relay is connected between the normally closed contact KA6-1 of the sixth intermediate relay and the electric water valve in series.
8. The automatic control device for pressure liquid discharge as claimed in claim 5, wherein: still include trouble overflow alarm circuit, trouble overflow alarm circuit includes the normally open contact KA6-2 of the sixth intermediate relay who is connected with live wire L1, the normally open contact KA6-2 other end of sixth intermediate relay is established ties and is had bee calling organ HAB, the bee calling organ HAB other end is connected with zero line N.
9. The automatic control device for pressure liquid discharge according to claim 8, characterized in that: still include amortization return circuit, the amortization return circuit includes the normally open button SF3 with the normally open contact KA6-2 series connection of sixth intermediate relay, the normally open button SF3 other end is established ties and is had eighth intermediate relay's coil KA8, eighth intermediate relay's coil KA8 other end is connected with zero line N, normally open button SF3 both ends are parallelly connected with eighth intermediate relay's normally open contact KA8-1, it has eighth intermediate relay's normally closed contact KA8-1 to establish ties between sixth intermediate relay's normally open contact KA6-2 and the bee calling organ HAB.
10. The automatic control device for pressure liquid discharge as claimed in claim 2, wherein: a SAC (sample consensus) change-over switch capable of changing between automatic operation and manual operation is arranged between the first water pump starting circuit and a firing line L1, the first water pump starting circuit further comprises a normally closed button SS1 connected with the firing line in series, the other end of the normally closed button SS1 is connected with a normally open contact SF1 in series, the other end of the normally open contact SF1 is connected with a coil KA4 of a fourth intermediate relay in series, and the normally open contact SF1 is connected with a normally open contact KA4-1 of the fourth intermediate relay in parallel;
the second water pump starting circuit still includes the normally closed button SS2 of establishing ties with the live wire, normally closed button SS2 other end is established ties there is normally open contact SF2, the normally open contact SF2 other end establishes ties with fifth relay's coil KA5, normally open contact SF2 connects in parallel and is equipped with fifth relay's normally open contact KA 5-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021187504.6U CN211979519U (en) | 2020-06-23 | 2020-06-23 | Automatic control device for pressure liquid drainage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021187504.6U CN211979519U (en) | 2020-06-23 | 2020-06-23 | Automatic control device for pressure liquid drainage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211979519U true CN211979519U (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021187504.6U Expired - Fee Related CN211979519U (en) | 2020-06-23 | 2020-06-23 | Automatic control device for pressure liquid drainage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211979519U (en) |
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2020
- 2020-06-23 CN CN202021187504.6U patent/CN211979519U/en not_active Expired - Fee Related
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Granted publication date: 20201120 Termination date: 20210623 |