CN215161128U - Sewage collecting tank with double delivery pumps - Google Patents
Sewage collecting tank with double delivery pumps Download PDFInfo
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- CN215161128U CN215161128U CN202121559198.9U CN202121559198U CN215161128U CN 215161128 U CN215161128 U CN 215161128U CN 202121559198 U CN202121559198 U CN 202121559198U CN 215161128 U CN215161128 U CN 215161128U
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Abstract
The utility model discloses a sewage collecting tank with double conveying pumps, which comprises a sewage collecting tank, wherein a mounting frame is arranged at the top of the sewage collecting tank, a main conveying pump, an auxiliary conveying pump and a floating ball liquid level controller are mounted on the mounting frame, the main conveying pump and the auxiliary conveying pump are connected with an automatic control circuit, and the automatic control circuit comprises a first contactor and a second contactor; the main conveying pump is connected with an alternating current power supply through a main normally open switch of the first contactor, the auxiliary conveying pump is connected with the alternating current power supply through a main normally open switch of the second contactor, a first floating ball switch, a second floating ball switch, a third floating ball switch and a fourth floating ball switch are installed on an insertion rod of the floating ball liquid level controller from top to bottom, and the automatic control circuit controls the main normally open switches of the first contactor and the second contactor to act according to signals of the floating ball liquid level controller. The utility model adopts the floating ball liquid level controller to control the double-delivery pump to work; the sewage conveying capacity of the sewage collecting tank under the emergency condition is improved.
Description
Technical Field
The utility model relates to a chemical industry equipment technical field especially relates to a sewage collecting pit with two delivery pumps.
Background
In the production process of chemical enterprises, a large amount of production sewage is often produced, in order to prevent the production sewage from polluting the environment, the sewage can not be randomly discharged into the external environment, the sewage is required to be collected by a sewage discharge pipe and discharged into a sewage collecting tank, and then the sewage is conveyed to a corresponding sewage treatment field by a conveying pump for centralized purification treatment.
The existing sewage collecting tank conveying pump is only provided with one conveying pump, when a sudden accident happens in a chemical enterprise, a large amount of sewage can be produced to flow into the sewage collecting tank sometimes, the conveying capacity of the existing conveying pump of the sewage collecting tank is far larger than that of the existing conveying pump of the sewage collecting tank, and the sewage is easily overflowed from the sewage collecting tank to cause environmental pollution.
To above-mentioned problem, someone proposes the power of increase sewage collecting pit delivery pump, adopt the big single delivery pump of flow to carry promptly, corresponding supporting motor power also increases so, need purchase the delivery pump that a flow is bigger, when sewage collecting pit sewage discharge volume is less, the delivery pump that a flow is bigger can lead to the delivery pump to open frequently and stop, burn out the delivery pump motor easily, if adopt PID control mode to adjust, will increase the converter speed governing again, make control circuit become too complicated.
Therefore, the prior art has the defects that a sewage collecting tank with double conveying pumps is lacked, and a floating ball liquid level controller is adopted to control the conveying pumps to work; improve the sewage transport capacity of current sewage collecting pit under emergent situation, prevent that sewage from overflowing polluted environment from sewage collecting pit.
SUMMERY OF THE UTILITY MODEL
In view of at least one defect in the prior art, the utility model aims to provide a sewage collecting tank with double delivery pumps, which adopts a floating ball liquid level controller to control the work of the delivery pumps; improve the sewage transport capacity of current sewage collecting pit under emergent situation, prevent that sewage from overflowing polluted environment from sewage collecting pit.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a sewage collecting tank with double conveying pumps comprises a sewage collecting tank and a blow-off pipe, wherein a mounting frame is horizontally and fixedly arranged at the top of the sewage collecting tank, the blow-off pipe is introduced into the sewage collecting tank, a main conveying pump is mounted on the mounting frame, and the key point is that an auxiliary conveying pump and a floating ball liquid level controller are further mounted on the mounting frame, the main conveying pump and the auxiliary conveying pump are connected with an automatic control circuit, and the automatic control circuit comprises a first contactor and a second contactor; the main conveying pump is connected with an alternating current power supply through a main normally open switch of a first contactor, the auxiliary conveying pump is connected with the alternating current power supply through a main normally open switch of a second contactor, an inserting rod of the floating ball liquid level controller extends into the sewage collecting tank, a first floating ball switch, a second floating ball switch, a third floating ball switch and a fourth floating ball switch are sequentially installed on the inserting rod from top to bottom, the first floating ball switch controls a coil of a first intermediate relay to be powered on and off, the second floating ball switch controls a coil of a second intermediate relay to be powered on and off, the third floating ball switch controls a coil of a third intermediate relay to be powered on and off, one end of the normally open switch of the second intermediate relay is connected with a live wire end of the alternating current power supply, and the other end of the normally open switch of the second intermediate relay is connected with one end of the coil of the first contactor through the normally closed switch of the fourth intermediate relay, the other end of the coil of the first contactor is connected with a zero line end of an alternating current power supply, and a normally open switch of the second intermediate relay is connected with a first auxiliary normally open switch of the first contactor in parallel; the one end of the normally open switch of first intermediate relay is connected with alternating current power supply's live wire end, and the normally open switch's of first intermediate relay other end is connected the one end of the coil of second contactor through the normally closed switch of third intermediate relay, and the zero line end of alternating current power supply is connected to the other end of the coil of second contactor, and the normally open switch of first intermediate relay connects in parallel has the first supplementary normally open switch of second contactor.
The main delivery pump is also provided with a first manual control circuit; the first manual control circuit is provided with a third contactor, a manual starting normally-open button SF1 and a manual stopping normally-closed button SS1, and a main normally-open switch of the third contactor is connected in parallel with a main normally-open switch of the first contactor; one end of a manual start normally open button SF1 is connected with a live wire end of an alternating current power supply, the other end of the manual start normally open button SF1 is connected with one end of a coil of a third contactor through a manual stop normally closed button SS1, and the other end of the coil of the third contactor is connected with a zero line end of the alternating current power supply; the manual start normally open button SF1 is connected in parallel with the first auxiliary normally open switch of the third contactor.
One end of a second auxiliary normally open switch of the first contactor is connected with a live wire end of the alternating current power supply, and the other end of the second auxiliary normally open switch of the first contactor is connected with a zero wire end of the alternating current power supply through a first red light HR 1; the second auxiliary normally open switch of the first contactor is connected with the second auxiliary normally open switch of the third contactor in parallel;
one end of a first auxiliary normally closed switch of the first contactor is connected with a live wire end of the alternating current power supply, and the other end of the first auxiliary normally closed switch of the first contactor is connected with a zero wire end of the alternating current power supply through a first green lamp HG 1; the first auxiliary normally closed switch of the first contactor is connected in parallel with the first auxiliary normally closed switch of the third contactor.
The auxiliary delivery pump is also provided with a second manual control circuit, the second manual control circuit is provided with a fourth contactor, a manual starting normally-open button SF2 and a manual stopping normally-closed button SS2, and a main normally-open switch of the fourth contactor is connected with a main normally-open switch of the second contactor in parallel; one end of a manual start normally open button SF2 is connected with a live wire end of an alternating current power supply, the other end of the manual start normally open button SF2 is connected with one end of a coil of a fourth contactor through a manual stop normally closed button SS2, and the other end of the coil of the fourth contactor is connected with a zero line end of the alternating current power supply; the manual start normally open button SF2 is connected in parallel with the first auxiliary normally open switch of the fourth contactor.
One end of a second auxiliary normally open switch of the second contactor is connected with a live wire end of the alternating current power supply, and the other end of the second auxiliary normally open switch of the second contactor is connected with a zero wire end of the alternating current power supply through a second red light HR 2; a second auxiliary normally open switch of the second contactor is connected with a second auxiliary normally open switch of the fourth contactor in parallel;
one end of a first auxiliary normally closed switch of the second contactor is connected with a live wire end of the alternating current power supply, and the other end of the first auxiliary normally closed switch of the second contactor is connected with a zero wire end of the alternating current power supply through a second green lamp HG 2; the first auxiliary normally closed switch of the second contactor is connected in parallel with the first auxiliary normally closed switch of the fourth contactor.
The utility model has the obvious effects that the utility model provides a sewage collecting tank with double delivery pumps, which adopts a floating ball liquid level controller to control the work of the delivery pumps; improve the sewage transport capacity of current sewage collecting pit under emergent situation, prevent that sewage from overflowing polluted environment from sewage collecting pit.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a circuit diagram of a primary control loop of the main feed pump;
FIG. 4 is a circuit diagram of a secondary control loop of the main transfer pump;
FIG. 5 is a circuit diagram of a primary control loop of the secondary feed pump;
FIG. 6 is a circuit diagram of a secondary control loop of the secondary feed pump;
FIG. 7 is a control circuit diagram of the float level controller.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-7, a sewage collecting tank with two delivery pumps, including sewage collecting tank 1, blow off pipe 2, the fixed mounting bracket 11 that is provided with of top level of sewage collecting tank 1, sewage collecting tank 1 is introduced to blow off pipe 2, install main delivery pump 3 on the mounting bracket 11, M1 in fig. 3 is main delivery pump 3 promptly, still install vice delivery pump 4 and floater liquid level controller 5 on the mounting bracket 11, M2 in fig. 5 is vice delivery pump 4 promptly. The motor part of the auxiliary delivery pump 4 is fixed on the mounting frame 11, the pump body part of the auxiliary delivery pump 4 extends into the bottom of the sewage collecting tank 1, and the mounting mode is the same as that of the main delivery pump 3.
As shown in fig. 1, 3 and 5, the main delivery pump 3 and the auxiliary delivery pump 4 are connected with an automatic control circuit, and the automatic control circuit includes a first contactor, a second contactor and a float level controller 5; the main conveying pump 3 is connected with an alternating current power supply through a main normally open switch KM1-1 of a first contactor, the auxiliary conveying pump 4 is connected with the alternating current power supply through a main normally open switch KM2-1 of a second contactor, a plunger 50 of the floating ball liquid level controller 5 extends into the sewage collection pool 1 through a through hole formed in the mounting frame 11, the plunger 50 is sequentially provided with a first floating ball switch 51, a second floating ball switch 52, a third floating ball switch 53 and a fourth floating ball switch 54 from top to bottom, the first floating ball switch 51 is arranged at the upper limit position of the sewage collection pool 1, the fourth floating ball switch 54 is arranged at the lower limit position of the sewage collection pool 1, the second floating ball switch 52 and the third floating ball switch 53 are arranged between the first floating ball switch 51 and the fourth floating ball switch 54, and the installation position of the first floating ball switch and the third floating ball switch can be determined according to actual conditions.
The sewage is conveyed to a corresponding sewage treatment field through a main conveying pump 3 and an auxiliary conveying pump 4 for centralized purification treatment.
The automatic control circuit is also provided with a first intermediate relay, a second intermediate relay, a third intermediate relay and a fourth intermediate relay.
As shown in FIG. 7, the first float switch 51 is connected with the first intermediate relay to control the on-off of the coil KA2-1 of the first intermediate relay, the second float switch 52 is connected with the second intermediate relay to control the on-off of the coil KA1-1 of the second intermediate relay, the third float switch 53 is connected with the third intermediate relay to control the on-off of the coil KA3-1 of the third intermediate relay, and the fourth float switch 54 is connected with the fourth intermediate relay to control the on-off of the coil KA4-1 of the fourth intermediate relay.
As shown in fig. 4, one end of a normally open switch KA1-2 of the second intermediate relay is connected with a live wire end L of an alternating current power supply, the other end of the normally open switch KA1-2 of the second intermediate relay is connected with one end of a coil KM1-2 of the first contactor through a normally closed switch KA4-2 of the fourth intermediate relay, the other end of the coil KM1-2 of the first contactor is connected with a zero line end N of the alternating current power supply, and the normally open switch KA1-2 of the second intermediate relay is connected in parallel with a first auxiliary normally open switch KM1-3 of the first contactor.
As shown in fig. 6, one end of a normally open switch KA2-2 of the first intermediate relay is connected with a live wire end L of an alternating current power supply, the other end of the normally open switch KA2-2 of the first intermediate relay is connected with one end of a coil KM2-2 of the second contactor through a normally closed switch KA3-2 of the third intermediate relay, the other end of the coil KM2-2 of the second contactor is connected with a zero line end N of the alternating current power supply, and the normally open switch of the first intermediate relay is connected in parallel with a first auxiliary normally open switch KM2-3 of the second contactor.
The working principle is as follows: under the normal use condition, less sewage is discharged into the sewage collecting tank 1 through the sewage discharge pipe 2, the liquid level in the sewage collecting tank 1 is between the second float switch 52 and the fourth float switch 54, when the liquid level reaches the position of the second floating ball switch 52, the second floating ball switch 52 is closed, the coil KA1-1 of the second intermediate relay is electrified, the normally open switch KA1-2 of the second intermediate relay is closed, the coil KM1-2 of the first contactor is electrified, the first auxiliary normally open switch KM1-3 of the first contactor is closed and self-locked, the main normally open switch KM1-1 of the first contactor is closed, the main conveying pump 3 is electrified, the liquid level in the sewage collecting tank 1 is reduced, when the liquid level is reduced to the position of the fourth float switch 54, the fourth float switch 54 is switched off, and the fourth float switch 54 controls the coil KA4-1 of the fourth intermediate relay to be powered off; the normally closed switch KA4-2 of the fourth intermediate relay is disconnected, the coil KM1-2 of the first contactor is powered off, the first auxiliary normally open switch KM1-3 of the first contactor is disconnected, the main normally open switch KM1-1 of the first contactor is disconnected, and the main conveying pump 3 is powered off. Then, along with the drainage of sewage, the liquid level in the sewage collecting tank 1 begins to rise again, when the liquid level reaches the position of the second float switch 52, the second float switch 52 is closed again, the main conveying pump 3 is controlled to be electrified again, under the condition of normal use, the working process is repeated, and due to the fact that the second float switch 52 and the fourth float switch 54 are adopted for combined control, compared with the scheme that a conveying pump with larger power is adopted, the starting and stopping frequency of the main conveying pump 3 is reduced.
Under the emergency condition, the sewage discharged into the sewage collecting tank 1 by the sewage discharge pipe 2 sharply increases, the liquid level in the sewage collecting tank 1 rapidly rises, when the liquid level reaches the second floating ball switch 52, the liquid in the sewage collecting tank 1 cannot be conveyed only by turning on the main conveying pump 3, at the moment, the liquid level in the sewage collecting tank 1 continuously rises, when the liquid level reaches the upper limit position of the sewage collecting tank 1, namely the position of the first floating ball switch 51, the first floating ball switch 51 is closed, the coil KA2-1 of the first intermediate relay is electrified, the normally open switch KA2-2 of the first intermediate relay is closed, the coil KM2-2 of the second contactor is electrified, the first auxiliary normally open switch KM2-3 of the second contactor is closed for self-locking, the main normally open switch KM2-1 of the second contactor is closed, the auxiliary conveying pump 4 is electrified, the conveying capacity is increased, the liquid level in the sewage collecting tank 1 drops, when the liquid level is lowered to the position of the third float switch 53, the third float switch 53 is switched off, and the third float switch 53 controls the coil KA3-1 of the third intermediate relay to be powered off; the normally closed switch KA3-2 of the third intermediate relay is disconnected, the coil KM2-2 of the second contactor is powered off, the first auxiliary normally open switch KM2-3 of the second contactor is disconnected, the main normally open switch KM2-1 of the second contactor is disconnected, and the auxiliary delivery pump 4 is powered off. Then, along with the discharge of sewage, the liquid level in the sewage collecting tank 1 begins to rise again, when the liquid level reaches the position of the first float switch 51, the first float switch 51 is closed again, the auxiliary conveying pump 4 is controlled to be electrified again, in an emergency situation, the working process is repeated, and due to the fact that the first float switch 51 and the third float switch 53 are adopted for combined control, compared with a control circuit which only adopts a single float switch, the starting and stopping frequency of the auxiliary conveying pump 4 is reduced.
In addition, due to the adoption of two delivery pumps, under the normal use condition, when one of the two delivery pumps, such as the main delivery pump 3, is damaged and needs maintenance, the auxiliary delivery pump 4 can still complete the sewage delivery capacity.
As shown in fig. 3 and 4, the main delivery pump 3 is also provided with a first manual control circuit; the first manual control circuit is provided with a third contactor, a manual starting normally-open button SF1 and a manual stopping normally-closed button SS1, and a main normally-open switch KM3-1 of the third contactor is connected with a main normally-open switch KM1-1 of the first contactor in parallel; one end of a manual start normally open button SF1 is connected with a live wire end L of an alternating current power supply, the other end of a manual start normally open button SF1 is connected with one end of a coil KM3-2 of a third contactor through a manual stop normally closed button SS1, and the other end of the coil KM3-2 of the third contactor is connected with a zero wire end N of the alternating current power supply; the manual starting normally open button SF1 is connected with a first auxiliary normally open switch KM3-3 of a third contactor in parallel.
When the floating ball liquid level controller 5 is soaked in sewage for a long time and is easy to damage, and the second floating ball switch 52 cannot be normally closed, the first manual control circuit can control the main conveying pump 3 to start and stop, the manual start normally open button SF1 is pressed, the coil KM3-2 of the third contactor is electrified, the main normally open switch KM3-1 of the third contactor is closed, and the main conveying pump 3 works; a first auxiliary normally open switch KM3-3 of the third contactor is closed and self-locked; when a manual stop normally-closed button SS1 is pressed, a coil KM3-2 of the third contactor is powered off, a main normally-open switch KM3-1 of the third contactor is disconnected, and a main delivery pump 3 is powered off; the first auxiliary normally open switch KM3-3 of the third contactor is opened.
As shown in fig. 4, one end of the second auxiliary normally open switch KM1-4 of the first contactor is connected with the live wire end L of the alternating current power supply, and the other end of the second auxiliary normally open switch KM1-4 of the first contactor is connected with the neutral wire end N of the alternating current power supply through the first red light HR 1; a second auxiliary normally-open switch KM1-4 of the first contactor is connected in parallel with a second auxiliary normally-open switch KM3-4 of a third contactor;
one end of a first auxiliary normally closed switch KM1-5 of the first contactor is connected with a live wire end L of an alternating current power supply, and the other end of the first auxiliary normally closed switch KM1-5 of the first contactor is connected with a zero line end N of the alternating current power supply through a first green lamp HG 1; the first auxiliary normally closed switch KM1-5 of the first contactor is connected in parallel with the first auxiliary normally closed switch KM3-5 of the third contactor.
When the main conveying pump 3 works, a second auxiliary normally-open switch KM1-4 of the first contactor is closed, and a first red light HR1 is lightened; similarly, when the second auxiliary normally-open switch KM3-4 of the third contactor is closed, the first red light HR1 is lighted.
When the main delivery pump 3 stops working, a first auxiliary normally-closed switch KM1-5 of the first contactor is closed, and a first green lamp HG1 is lightened; similarly, when the first auxiliary normally-closed switch KM3-5 of the third contactor is closed, the first green light HG1 is turned on.
As shown in fig. 5 and 6, the secondary delivery pump 4 is also provided with a second manual control circuit, the second manual control circuit is provided with a fourth contactor, a manual starting normally-open button SF2 and a manual stopping normally-closed button SS2, and a main normally-open switch KM4-1 of the fourth contactor is connected with a main normally-open switch KM2-1 of the second contactor in parallel; one end of a manual start normally open button SF2 is connected with a live wire end L of an alternating current power supply, the other end of a manual start normally open button SF2 is connected with one end of a coil KM4-2 of a fourth contactor through a manual stop normally closed button SS2, and the other end of the coil KM4-2 of the fourth contactor is connected with a zero wire end N of the alternating current power supply; the manual starting normally open button SF2 is connected with a first auxiliary normally open switch KM4-3 of a fourth contactor in parallel.
When the floating ball liquid level controller 5 is soaked in sewage for a long time and is easy to damage, and the first floating ball switch 51 cannot be normally closed, the auxiliary delivery pump 4 can be controlled to start and stop through the second manual control circuit, the manual start normally open button SF2 is pressed, the coil KM4-2 of the fourth contactor is electrified, the main normally open switch KM4-1 of the fourth contactor is closed, and the auxiliary delivery pump 4 works; a first auxiliary normally open switch KM4-3 of the fourth contactor is closed and self-locked; when a manual stop normally-closed button SS2 is pressed, a coil KM4-2 of the fourth contactor is powered off, a main normally-open switch KM4-1 of the fourth contactor is disconnected, and the auxiliary delivery pump 4 is powered off; the first auxiliary normally open switch KM4-3 of the fourth contactor is opened.
One end of a second auxiliary normally open switch KM2-4 of the second contactor is connected with a live wire end L of the alternating current power supply, and the other end of the second auxiliary normally open switch KM2-4 of the second contactor is connected with a zero line end N of the alternating current power supply through a second red lamp HR 2; a second auxiliary normally open switch KM2-4 of the second contactor is connected in parallel with a second auxiliary normally open switch KM4-4 of a fourth contactor;
one end of a first auxiliary normally closed switch KM2-5 of the second contactor is connected with a live wire end L of an alternating current power supply, and the other end of the first auxiliary normally closed switch KM2-5 of the second contactor is connected with a zero line end N of the alternating current power supply through a second green lamp HG 2; the first auxiliary normally closed switch KM2-5 of the second contactor is connected in parallel with the first auxiliary normally closed switch KM4-5 of the fourth contactor.
When the auxiliary delivery pump 4 works, a second auxiliary normally-open switch KM2-4 of the second contactor is closed, and a second red light HR2 is lightened; similarly, when the second auxiliary normally-open switch KM4-4 of the fourth contactor is closed, the second red light HR2 is turned on.
When the auxiliary delivery pump 4 stops working, a first auxiliary normally-closed switch KM2-5 of the second contactor is closed, and a second green lamp HG2 is lightened; similarly, when the first auxiliary normally-closed switch KM4-5 of the fourth contactor is closed, the second green light HG2 is turned on.
The intelligent control system further comprises a first remote DCS control switch KA5, one end of the first remote DCS control switch KA5 is connected with a fire wire end L of an alternating-current power supply, and the other end of the first remote DCS control switch KA5 is connected with a common end of a normally closed switch KA4-2 of the fourth intermediate relay and a coil KM1-2 of the first contactor.
The intelligent control system further comprises a second remote DCS control switch KA6, one end of the second remote DCS control switch KA6 is connected with a live wire end L of an alternating-current power supply, and the other end of the second remote DCS control switch KA6 is connected with a common end of a normally closed switch KA3-2 of the third intermediate relay and a coil KM2-2 of the second contactor.
Often be provided with remote monitoring camera system in large-scale factory, damage unable during operation when floater liquid level controller 5, observe sewage collecting tank 1 when excessive through remote monitoring camera system, can control main delivery pump 3, the work of vice delivery pump 4 respectively through first remote DCS control switch KA5, the remote DCS control switch KA6 of second, the theory of operation is the same, no longer detailed description.
As shown in fig. 3, the main delivery pump 3 is also provided with a disconnector 1QF, by means of which the main delivery pump 3 can be switched off in case of emergency; as shown in fig. 6, the secondary feed pump 4 is also provided with a disconnector 2QF, by means of which disconnector 2QF the secondary feed pump 4 can be switched off in an emergency.
Still include electric cabinet 6, electric cabinet 6 can set up on the next door of sewage collecting tank 1 or mounting bracket 11, and wherein mounting bracket 11 is flat-plate-shaped, and both ends are fixed in 1 top both sides of sewage collecting tank, and automatic control circuit, first manual control circuit, the manual control circuit of second set up in electric cabinet 6.
The floating ball level controller 5 can be a zierweiuqk series floating ball level controller provided with four magnetic floats corresponding to four control points on the plunger 50. The length of the insert rod 50 is customized according to the depth of the wastewater collection tank 1.
As shown in fig. 4 and 6, the ac power supply is further provided with a rotary switch SB1 and a rotary switch SB2 for controlling the secondary control circuit to be powered on and off in an emergency.
Finally, it is noted that: the above list is only the concrete implementation example of the present invention, and of course those skilled in the art can make modifications and variations to the present invention, and if these modifications and variations fall within the scope of the claims of the present invention and their equivalent technology, they should be considered as the protection scope of the present invention.
Claims (5)
1. The sewage collecting tank with the double conveying pumps comprises a sewage collecting tank (1) and a blow-off pipe (2), wherein a mounting frame (11) is horizontally and fixedly arranged at the top of the sewage collecting tank (1), the blow-off pipe (2) is introduced into the sewage collecting tank (1), a main conveying pump (3) is mounted on the mounting frame (11), the sewage collecting tank is characterized in that an auxiliary conveying pump (4) and a floating ball liquid level controller (5) are further mounted on the mounting frame (11), the main conveying pump (3) and the auxiliary conveying pump (4) are connected with an automatic control circuit, and the automatic control circuit comprises a first contactor and a second contactor; the main conveying pump (3) is connected with an alternating current power supply through a main normally open switch of a first contactor, the auxiliary conveying pump (4) is connected with the alternating current power supply through a main normally open switch of a second contactor, an inserted link (50) of the floating ball liquid level controller (5) extends into the sewage collection pool (1), a first floating ball switch (51), a second floating ball switch (52), a third floating ball switch (53) and a fourth floating ball switch (54) are sequentially installed on the inserted link (50) from top to bottom, the first floating ball switch (51) controls a coil of a first intermediate relay to be powered on and powered off, the second floating ball switch (52) controls a coil of a second intermediate relay to be powered on and powered off, the third floating ball switch (53) controls a coil of a third intermediate relay to be powered on and powered off, and the fourth floating ball switch (54) controls a coil of a fourth intermediate relay to be powered on and powered off; one end of a normally open switch of the second intermediate relay is connected with a live wire end of the alternating current power supply, the other end of the normally open switch of the second intermediate relay is connected with one end of a coil of the first contactor through a normally closed switch of the fourth intermediate relay, the other end of the coil of the first contactor is connected with a zero line end of the alternating current power supply, and the normally open switch of the second intermediate relay is connected with a first auxiliary normally open switch of the first contactor in parallel; the one end of the normally open switch of first intermediate relay is connected with alternating current power supply's live wire end, and the normally open switch's of first intermediate relay other end is connected the one end of the coil of second contactor through the normally closed switch of third intermediate relay, and the zero line end of alternating current power supply is connected to the other end of the coil of second contactor, and the normally open switch of first intermediate relay connects in parallel has the first supplementary normally open switch of second contactor.
2. The effluent collection sump of claim 1, wherein: the main delivery pump (3) is also provided with a first manual control circuit; the first manual control circuit is provided with a third contactor, a manual starting normally-open button SF1 and a manual stopping normally-closed button SS1, and a main normally-open switch of the third contactor is connected in parallel with a main normally-open switch of the first contactor; one end of a manual start normally open button SF1 is connected with a live wire end of an alternating current power supply, the other end of the manual start normally open button SF1 is connected with one end of a coil of a third contactor through a manual stop normally closed button SS1, and the other end of the coil of the third contactor is connected with a zero line end of the alternating current power supply; the manual start normally open button SF1 is connected in parallel with the first auxiliary normally open switch of the third contactor.
3. The effluent collection sump of claim 2, wherein: one end of a second auxiliary normally open switch of the first contactor is connected with a live wire end of the alternating current power supply, and the other end of the second auxiliary normally open switch of the first contactor is connected with a zero wire end of the alternating current power supply through a first red light HR 1; the second auxiliary normally open switch of the first contactor is connected with the second auxiliary normally open switch of the third contactor in parallel;
one end of a first auxiliary normally closed switch of the first contactor is connected with a live wire end of the alternating current power supply, and the other end of the first auxiliary normally closed switch of the first contactor is connected with a zero wire end of the alternating current power supply through a first green lamp HG 1; the first auxiliary normally closed switch of the first contactor is connected in parallel with the first auxiliary normally closed switch of the third contactor.
4. The effluent collection sump of claim 1, wherein: the auxiliary delivery pump (4) is also provided with a second manual control circuit, the second manual control circuit is provided with a fourth contactor, a manual starting normally-open button SF2 and a manual stopping normally-closed button SS2, and a main normally-open switch of the fourth contactor is connected with a main normally-open switch of the second contactor in parallel; one end of a manual start normally open button SF2 is connected with a live wire end of an alternating current power supply, the other end of the manual start normally open button SF2 is connected with one end of a coil of a fourth contactor through a manual stop normally closed button SS2, and the other end of the coil of the fourth contactor is connected with a zero line end of the alternating current power supply; the manual start normally open button SF2 is connected in parallel with the first auxiliary normally open switch of the fourth contactor.
5. The effluent collection sump of claim 4, wherein: one end of a second auxiliary normally open switch of the second contactor is connected with a live wire end of the alternating current power supply, and the other end of the second auxiliary normally open switch of the second contactor is connected with a zero wire end of the alternating current power supply through a second red light HR 2; a second auxiliary normally open switch of the second contactor is connected with a second auxiliary normally open switch of the fourth contactor in parallel;
one end of a first auxiliary normally closed switch of the second contactor is connected with a live wire end of the alternating current power supply, and the other end of the first auxiliary normally closed switch of the second contactor is connected with a zero wire end of the alternating current power supply through a second green lamp HG 2; the first auxiliary normally closed switch of the second contactor is connected in parallel with the first auxiliary normally closed switch of the fourth contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121559198.9U CN215161128U (en) | 2021-07-09 | 2021-07-09 | Sewage collecting tank with double delivery pumps |
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| CN202121559198.9U CN215161128U (en) | 2021-07-09 | 2021-07-09 | Sewage collecting tank with double delivery pumps |
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| CN215161128U true CN215161128U (en) | 2021-12-14 |
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