CN204557237U - The active/standby unwatering pump of cesspit switches water level controller - Google Patents
The active/standby unwatering pump of cesspit switches water level controller Download PDFInfo
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- CN204557237U CN204557237U CN201520247081.5U CN201520247081U CN204557237U CN 204557237 U CN204557237 U CN 204557237U CN 201520247081 U CN201520247081 U CN 201520247081U CN 204557237 U CN204557237 U CN 204557237U
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Abstract
The utility model provides the active/standby unwatering pump of cesspit and switches water level controller, comprise the first relay J 1, the first field effect transistor Q1 and the first high liquid level contact that are connected in series, the second relay J 2, the second field effect transistor Q2 be connected in series and the second high liquid level contact, and change-over switch SA; Described first high liquid level contact is arranged in cesspit lower than the second high liquid level contact; Two switch terminal of described change-over switch SA are separately positioned on the circuit between the first high liquid level contact 3 and the first field effect transistor Q1 and the circuit between the second high liquid level contact and the second field effect transistor Q2; The first described relay J 1 is electrically connected with first row water pump, and the second relay J 2 is electrically connected with second row water pump.The utility model realizes the switching between first row water pump and second row water pump, makes first row water pump and second row water pump in turn as active and standby unwatering pump, avoids single unwatering pump longevity of service, the problem that load is large, extend serviceable life.
Description
Technical field
The utility model relates to cesspit active/standby unwatering pump handoff technique field, particularly, relates to the active/standby unwatering pump of cesspit and switches water level controller.
Background technology
At present, in some important blowdown occasions, in cesspit, often install one main one for two unwatering pumps, when the liquid level in cesspit is worth higher than lower liquid level I, starts main drain pump, blowdown requirement can be realized; When the liquid level in cesspit continues II value being elevated to high liquid level, start standby platform water pump, active and standby two unwatering pumps work simultaneously, to reach blowdown requirement; When the liquid level in cesspit is worth lower than lower liquid level I, active and standby two unwatering pumps all stop.
Existing control circuit more complicated, as controlled with PLC, and cost is higher.
And, existing control circuit can not realize the lasting unlatching of active and standby unwatering pump, when the liquid level in cesspit is higher than setting value, unwatering pump is just opened, lower than time just close, and cesspit is in a dynamic blowdown process sometimes, this will cause unwatering pump to open frequently, close, initiating failure.
Therefore, how to control the main drain pump of cesspit and the timely open and close of standby unwatering pump, especially open and close timely just according to the liquid level change in cesspit, become anxious technical issues that need to address.
In addition, existing control circuit can not realize the switching between main drain pump and standby unwatering pump.Like this, in the use procedure of reality, main drain pump is in the work under long-term higher load condition, and the frequency that standby unwatering pump uses is extremely low, thus causing main drain pump, to benefit from the life-span too short, changes problem frequently.
In view of this, special proposition the utility model.
Utility model content
In order to solve the problem, the utility model provides the active/standby unwatering pump of cesspit and switches water level controller, particularly, have employed following technical scheme:
The active/standby unwatering pump of cesspit switches water level controller, described cesspit arranges first row water pump and second row water pump, comprise the first relay J 1, second relay J 2, first field effect transistor Q1, the second field effect transistor Q2, the first high liquid level contact, the second high liquid level contact and change-over switch SA, first relay J 1, first field effect transistor Q1 is connected with the first high liquid level contact series, and the second relay J 2, second field effect transistor Q2 is connected with the second high liquid level contact series;
Described first high liquid level contact and the second high liquid level contact are arranged in cesspit, and the first high liquid level contact is arranged lower than the second high liquid level contact;
Two switch terminal of described change-over switch SA are separately positioned on the circuit between the first high liquid level contact 3 and the first field effect transistor Q1 and the circuit between the second high liquid level contact and the second field effect transistor Q2;
The first described relay J 1 is electrically connected with first row water pump, and the second relay J 2 is electrically connected with second row water pump.
Further, described change-over switch SA comprise can synchronization action first switch throw son and second switching throw son;
First switching of change-over switch SA is thrown son end correspondence and is arranged the first contact, the second contact and the 3rd contact, first contact connects the first field effect transistor Q1, second contact connects the first high liquid level contact, 3rd contact connects the second high liquid level contact, described first switches the one end of throwing son connects the first contact, and the other end can switch between the second contact and the 3rd contact;
Second switching of change-over switch SA is thrown son end correspondence and is arranged the 4th contact, the 5th contact and the 6th contact, 4th contact connects the second field effect transistor Q2,5th contact connects the second high liquid level contact, 6th contact connects the first high liquid level contact, described second switches the one end of throwing son connects the 4th contact, and the other end can switch between the 5th contact and the 6th contact.
Further, also comprise the low liquid level contact be arranged in cesspit, low liquid level contact is arranged lower than the first high liquid level contact, and low liquid level contact is electrically connected with the second contact, the 3rd contact, the 4th contact and the 6th contact respectively;
The first described relay J 1 comprises the first relay auxiliary contact J1-1, first relay auxiliary contact J1-1 is arranged on the circuit between low liquid level contact and the second contact, the 6th contact, the first relay auxiliary contact J1-1 and the first relay J 1 synchronization action;
The second described relay J 2 comprises the second relay auxiliary contact J2-1, second relay auxiliary contact J2-1 is arranged on the circuit between low liquid level contact and the 3rd contact, the 4th contact, the second relay auxiliary contact J2-1 and the second relay J 2 synchronization action;
Arrange diode D between the second described relay auxiliary contact J2-1 and the first high liquid level contact, the positive pole of diode D connects the second relay auxiliary contact J2-1, and negative pole connects the first high liquid level contact.
Further, the grid of the first described field effect transistor Q1 connects the first contact, source ground, and drain electrode connects the first relay J 1;
The grid of the second described field effect transistor Q2 connects the 4th contact, source ground, and drain electrode connects the second relay J 2.
Further, also comprise the positive source contact be arranged in cesspit, positive source contact is arranged on the minimum point of cesspit;
The first described relay J 1, second relay J 2 is electrically connected with positive source contact respectively.
Further, between the described first high liquid level contact and the first field effect transistor Q1, be connected in series the first resistance R1, between the second high liquid level contact and the second field effect transistor Q2, be connected in series the second resistance R2.
Further, the first described field effect transistor Q1 is parallel with the 3rd resistance R3, and the second field effect transistor Q2 is parallel with the 4th resistance R4.
Further, the resistance of the first described resistance R1, the second resistance R2, the 3rd resistance R3 and the 4th resistance R4 is equal.
First relay J 1 of the present utility model is for controlling first row water pump, second relay J 2 is for controlling second row water pump, when the liquid level in cesspit reaches the first high liquid level contact position, high level makes the first field effect transistor Q1 conducting, and then make the first relay J 1 charged, first row starting mode of pump; When the liquid level in cesspit reaches the second high liquid level contact position, first row water pump maintenance work, high level makes the second field effect transistor Q2 conducting, and then makes the second relay J 2 charged, second row starting mode of pump.
Now, because first row water pump corresponds to the first high liquid level contact, second row water pump corresponds to the second high liquid level contact, because the first high liquid level contact is arranged lower than the second high liquid level contact, so the time that first row water pump is opened is from far away more than the time that second row water pump is opened.So in that case, first row water pump is main drain pump, second row water pump is standby unwatering pump.
And when switching change-over switch SA, make the first high liquid level contact connect the second field effect transistor Q2, the second high liquid level contact connects the first field effect transistor Q1.When the liquid level in cesspit reaches the first high liquid level contact position, high level makes the second field effect transistor Q2 conducting, and then makes the second relay J 2 charged, second row starting mode of pump; When the liquid level in cesspit reaches the second high liquid level contact position, second row water pump maintenance work, high level makes the first field effect transistor Q1 conducting, and then makes the first relay J 1 charged, first row starting mode of pump.
Now, because second row water pump corresponds to the first high liquid level contact, first row water pump corresponds to the second high liquid level contact, because the first high liquid level contact is arranged lower than the second high liquid level contact, so the time that second row water pump is opened is from far away more than the time that first row water pump is opened.So in that case, second row water pump is main drain pump, first row water pump is standby unwatering pump.
Therefore, the utility model not only can according to the liquid level change in cesspit, realize the timely startup of main drain pump and standby unwatering pump, meet the blowdown requirement of cesspit, and the switching that can realize between first row water pump and second row water pump, make first row water pump and second row water pump successively in turn as active and standby unwatering pump, avoid because single unwatering pump is for a long time as the longevity of service that main drain pump causes, the problem that load is large, extends serviceable life.
Accompanying drawing explanation
Fig. 1 circuit diagram of the present utility model.
Label declaration in accompanying drawing: contact 10-the 6th contact 11-first switching in 5-first contact 6-second contact 7-the 3rd contact 8-the 4th contact 9 the 5th, 1-positive source contact 2-low liquid level contact 3-first high liquid level contact 4-second high liquid level contact is thrown sub-12-second switching and thrown son.
Embodiment
Switch water level controller below in conjunction with accompanying drawing to the active/standby unwatering pump of cesspit of the present utility model to be described in detail:
As shown in Figure 1, the active/standby unwatering pump of cesspit of the present utility model switches water level controller, described cesspit arranges first row water pump and second row water pump, comprise the first relay J 1, second relay J 2, first field effect transistor Q1, the second field effect transistor Q2, the first high liquid level contact 3, second high liquid level contact 4 and change-over switch SA, first relay J 1, first field effect transistor Q1 and the first high liquid level contact 3 are connected in series, and the second relay J 2, second field effect transistor Q2 and the second high liquid level contact 4 are connected in series; Described first high liquid level contact 3 and the second high liquid level contact 4 are arranged in cesspit, and the first high liquid level contact 3 is arranged lower than the second high liquid level contact 4; Two switch terminal of described change-over switch SA are separately positioned on the circuit between the first high liquid level contact 3 and the first field effect transistor Q1 and the circuit between the second high liquid level contact 4 and the second field effect transistor Q2; The first described relay J 1 is electrically connected with first row water pump, and the second relay J 2 is electrically connected with second row water pump.
The auxiliary contact of the first relay J 1 of the present utility model are connected with first row water pump control loop, first relay J 1 is for controlling first row water pump, the auxiliary contact of the second relay J 2 are connected with second row water pump control loop, second relay J 2 is for controlling second row water pump, when the liquid level in cesspit reaches the first 3 position, high liquid level contact, high level makes the first field effect transistor Q1 conducting, and then makes the first relay J 1 charged, first row starting mode of pump; When the liquid level in cesspit reaches the second 4 position, high liquid level contact, first row water pump maintenance work, high level makes the second field effect transistor Q2 conducting, and then makes the second relay J 2 charged, second row starting mode of pump.
Now, because first row water pump corresponds to the first high liquid level contact 3, second row water pump corresponds to the second high liquid level contact 4, because the first high liquid level contact 3 is arranged lower than the second high liquid level contact 4, so the time that first row water pump is opened is from far away more than the time that second row water pump is opened.So in that case, first row water pump is main drain pump, second row water pump is standby unwatering pump.
And when switching change-over switch SA, make the first high liquid level contact 3 connect the second field effect transistor Q2, the second high liquid level contact 4 connects the first field effect transistor Q1.When the liquid level in cesspit reaches the first 3 position, high liquid level contact, high level makes the second field effect transistor Q2 conducting, and then makes the second relay J 2 charged, second row starting mode of pump; When the liquid level in cesspit reaches the second 4 position, high liquid level contact, second row water pump maintenance work, high level makes the first field effect transistor Q1 conducting, and then makes the first relay J 1 charged, first row starting mode of pump.
Now, because second row water pump corresponds to the first high liquid level contact 3, first row water pump corresponds to the second high liquid level contact 4, because the first high liquid level contact 3 is arranged lower than the second high liquid level contact 4, so the time that second row water pump is opened is from far away more than the time that first row water pump is opened.So in that case, second row water pump is main drain pump, first row water pump is standby unwatering pump.
Therefore, the utility model not only can according to the liquid level change in cesspit, realize the timely startup of main drain pump and standby unwatering pump, meet the blowdown requirement of cesspit, and the switching that can realize between first row water pump and second row water pump, make first row water pump and second row water pump successively in turn as active and standby unwatering pump, avoid because single unwatering pump is for a long time as the longevity of service that main drain pump causes, the problem that load is large, extends serviceable life.
Particularly, change-over switch SA described in the utility model comprise can synchronization action first switch throw son 11 and second switch throw son 12.
First switching of change-over switch SA is thrown sub 11 end correspondences and is arranged the first contact 6, contact 5, second and the 3rd contact 7, first contact 5 connects the first field effect transistor Q1, second contact 6 connects the first high liquid level contact 3,3rd contact 7 connects the second high liquid level contact 4, described first switches the one end of throwing son 11 connects the first contact 5, and the other end can switch between the second contact 6 and the 3rd contact 7.
Second switching of change-over switch SA is thrown sub 12 end correspondences and is arranged the 4th contact 8, the 5th contact 9 and the 6th contact 10,4th contact 8 connects the second field effect transistor Q2,5th contact 9 connects the second high liquid level contact 4,6th contact 10 connects the first high liquid level contact 3, described second switches the one end of throwing son 12 connects the 4th contact 8, and the other end can switch between the 5th contact 9 and the 6th contact 10.
First switching of change-over switch SA of the present utility model is thrown son 11 and is switched to position, contact 6, connection first contact 5, second, second switches and throws son 12 when switching to connection the 4th contact 8, the 5th 9 position, contact, first row water pump is main drain pump, and second row water pump is standby unwatering pump.
First switching of change-over switch SA is thrown son 11 and is switched to position, contact 7, connection first contact the 5, the 3rd, second switches and throws son 12 when switching to connection the 4th contact 8, the 6th 10 position, contact, second row water pump is main drain pump, and first row water pump is standby unwatering pump.
The active/standby unwatering pump of cesspit of the present utility model switches water level controller and also comprises the low liquid level contact 2 be arranged in cesspit, low liquid level contact 2 is arranged lower than the first high liquid level contact 3, and low liquid level contact 2 is electrically connected with the second contact 6, the 3rd contact 7, the 4th contact 8 and the 6th contact 10 respectively.
The first described relay J 1 comprises the first relay auxiliary contact J1-1, first relay auxiliary contact J1-1 is arranged on the circuit between low liquid level contact 2 and the second contact 6, the 6th contact 10, the first relay auxiliary contact J1-1 and the first relay J 1 synchronization action.
When the first relay J 1 is charged, first relay auxiliary contact J1-1 synchronizing close, makes the liquid level in cesspit keep the first field effect transistor Q1 conducting higher than low liquid level contact 2, first relay auxiliary contact J1-1, first relay J 1 is charged, first row water pump continuous firing.Like this, only have when the liquid level in cesspit is lower than low liquid level contact 2, first row water pump just can stop, and avoids the frequent starting of first row water pump, provides work efficiency, extends the life-span of use.
The second described relay J 2 comprises the second relay auxiliary contact J2-1, second relay auxiliary contact J2-1 is arranged on the circuit between low liquid level contact 2 and the 3rd contact 7, the 4th contact 8, the second relay auxiliary contact J2-1 and the second relay J 2 synchronization action.
When the second relay J 2 is charged, second relay auxiliary contact J2-1 synchronizing close, makes the liquid level in cesspit keep the second field effect transistor Q2 conducting higher than low liquid level contact 2, second relay auxiliary contact J2-1, second relay J 2 is charged, second row water pump continuous firing.Like this, only have when the liquid level in cesspit is lower than low liquid level contact 2, second row water pump, first row water pump stop, and avoid the frequent starting of first row water pump, second row water pump, provide work efficiency, extend the life-span of use.
Arrange diode D between second relay auxiliary contact J2-1 described in the utility model and the first high liquid level contact 3, the positive pole of diode D connects the second relay auxiliary contact J2-1, and negative pole connects the first high liquid level contact 3.
The effect of diode D of the present utility model is: after change-over switch SA switches, when second row water pump is as main drain pump, when cesspit liquid level arrives the first high liquid level contact 3, only have the second field effect transistor Q2 conducting, diode D cut-off effect makes the first field effect transistor Q1 cut-off.
The grid of the first field effect transistor Q1 described in the utility model connects the first contact 5, source ground, and drain electrode connects the first relay J 1; The grid of the second described field effect transistor Q2 connects the 4th contact 8, source ground, and drain electrode connects the second relay J 2.
The active/standby unwatering pump of cesspit of the present utility model switches water level controller and also comprises the positive source contact 1 be arranged in cesspit, and positive source contact 1 is arranged on the minimum point of cesspit; The first described relay J 1, second relay J 2 is electrically connected with positive source contact 1 respectively.Like this, for the first field effect transistor Q1, the second field effect transistor Q2 provide high level, its conducting is impelled.
Be connected in series the first resistance R1 between first high liquid level contact 3 described in the utility model and the first field effect transistor Q1, between the second high liquid level contact 4 and the second field effect transistor Q2, be connected in series the second resistance R2.
First resistance R1 of the present utility model, the second resistance R2 are all for current limliting.
First field effect transistor Q1 described in the utility model is parallel with the 3rd resistance R3, and the second field effect transistor Q2 is parallel with the 4th resistance R4.
3rd resistance R3 of the present utility model, the 4th resistance R4 are biasing resistor, during for field effect transistor conducting, end reliably.
The resistance of the first resistance R1 described in the utility model, the second resistance R2, the 3rd resistance R3 and the 4th resistance R4 is equal.
Therefore, the active/standby unwatering pump water level controller of cesspit of the present utility model:
First row water pump is main drain pump, when second row water pump is standby unwatering pump, 1) when water level is elevated to the first high liquid level contact 3, high level makes the first field effect transistor Q1 conducting by the first resistance R1, first relay J 1 is charged, first row starting mode of pump, keeps the first field effect transistor Q1 conducting by the first relay auxiliary contact J1-1, first relay J 1 is charged, and first row water pump runs continuously; When water level decreasing is to low liquid level contact less than 2, the first field effect transistor Q1 cut-off, the first relay J 1 dead electricity, first row water pump is out of service.
2) when water level is elevated to the first high liquid level contact 3, high level makes the first field effect transistor Q1 conducting by the first resistance R1, first relay J 1 is charged, first row starting mode of pump, the first field effect transistor Q1 conducting is kept by the first relay auxiliary contact J1-1, first relay J 1 is charged, and first row water pump runs continuously; When now water level continuation rising rises to the second high liquid level contact 4, high level makes the second field effect transistor Q2 conducting by the second resistance R2, second relay J 2 is charged, second row starting mode of pump, the second field effect transistor Q2 conducting is kept by the second relay auxiliary contact J2-1, second relay J 2 is charged, and second row water pump runs continuously; Now water level decreasing, when water level is lower than low liquid level contact 2, the first field effect transistor Q1, the second field effect transistor Q2 all end, and the first relay J 1, second relay J 2 is dead electricity all, first row water pump, second row water pump full cut-off.
Switch change-over switch SA, make first row water pump for standby unwatering pump, when second row water pump is main drain pump,
1) when water level is elevated to the first high liquid level contact 3, through change-over switch SA, second resistance R2 makes the second field effect transistor Q2 conducting, second relay J 2 is charged, second row starting mode of pump is (due to the unilateal conduction of diode D, first field effect transistor Q1 still ends), by the second relay auxiliary contact J2-1, diode D keeps the second field effect transistor Q2 conducting, second relay J 2 is charged, second row water pump runs continuously, when water level decreasing is to low liquid level contact less than 2, second field effect transistor Q2 cut-off, second relay J 2 dead electricity, second row water pump is out of service.
2) when water level is elevated to the first high liquid level contact 3, the second field effect transistor Q2 conducting is made through change-over switch SA, the second resistance R2, second relay J 2 is charged, second row starting mode of pump is (due to the unilateal conduction of diode D, first field effect transistor Q1 still ends), keep the second field effect transistor Q2 conducting by the second relay auxiliary contact J2-1, diode D, the second relay J 2 is charged, and second row water pump runs continuously, when now water level continuation rising rises to the second high liquid level contact 4, high level is by change-over switch SA, first resistance R1 makes the first field effect transistor Q1 conducting, first relay J 1 is charged, first row starting mode of pump, by the second relay auxiliary contact J2-1, change-over switch SA, first resistance R1 keeps the first field effect transistor Q1 conducting, first relay J 1 is charged, first row water pump runs continuously, now water level decreasing, when water level is lower than low liquid level contact 2, first field effect transistor Q1, second field effect transistor Q2 all ends, first relay J 1, second relay J 2 is dead electricity all, first row water pump, second row water pump full cut-off.
Therefore, the utility model not only can according to the liquid level change in cesspit, realize the timely startup of main drain pump and standby unwatering pump, meet the blowdown requirement of cesspit, and the switching that can realize between first row water pump and second row water pump, make first row water pump and second row water pump successively in turn as active and standby unwatering pump, avoid because single unwatering pump is for a long time as the longevity of service that main drain pump causes, the problem that load is large, extends serviceable life.
The above is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any technician being familiar with this patent is not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned prompting can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solutions of the utility model, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of the utility model scheme.
Claims (8)
1. the active/standby unwatering pump of cesspit switches water level controller, and described cesspit arranges first row water pump and second row water pump, it is characterized in that,
Comprise the first relay (J1), the second relay (J2), the first field effect transistor (Q1), the second field effect transistor (Q2), the first high liquid level contact (3), the second high liquid level contact (4) and change-over switch (SA), first relay (J1), the first field effect transistor (Q1) and the first high liquid level contact (3) are connected in series, and the second relay (J2), the second field effect transistor (Q2) and the second high liquid level contact (4) are connected in series;
Described first high liquid level contact (3) and the second high liquid level contact (4) are arranged in cesspit, and the first high liquid level contact (3) is arranged lower than the second high liquid level contact (4);
Two switch terminal of described change-over switch (SA) are separately positioned on the circuit between the first high liquid level contact (3) and the first field effect transistor (Q1) and the circuit between the second high liquid level contact (4) and the second field effect transistor (Q2);
Described the first relay (J1) is electrically connected with first row water pump, and the second relay (J2) is electrically connected with second row water pump.
2. the active/standby unwatering pump of cesspit according to claim 1 switches water level controller, it is characterized in that, described change-over switch (SA) comprise can synchronization action first switch throw son (11) and second switching throw son (12);
First switching of change-over switch (SA) is thrown son (11) end correspondence and is arranged the first contact (5), the second contact (6) and the 3rd contact (7), first contact (5) connects the first field effect transistor (Q1), second contact (6) connects the first high liquid level contact (3), 3rd contact (7) connects the second high liquid level contact (4), described first switches the one end of throwing son (11) connects the first contact (5), and the other end can switch between the second contact (6) and the 3rd contact (7);
Second switching of change-over switch (SA) is thrown son (12) end correspondence and is arranged the 4th contact (8), the 5th contact (9) and the 6th contact (10), 4th contact (8) connects the second field effect transistor (Q2), 5th contact (9) connects the second high liquid level contact (4), 6th contact (10) connects the first high liquid level contact (3), described second switches the one end of throwing son (12) connects the 4th contact (8), and the other end can switch between the 5th contact (9) and the 6th contact (10).
3. the active/standby unwatering pump of cesspit according to claim 2 switches water level controller, it is characterized in that,
Also comprise the low liquid level contact (2) be arranged in cesspit, low liquid level contact (2) is arranged lower than the first high liquid level contact (3), and low liquid level contact (2) is electrically connected with the second contact (6), the 3rd contact (7), the 4th contact (8) and the 6th contact (10) respectively;
Described the first relay (J1) comprises the first relay auxiliary contact (J1-1), first relay auxiliary contact (J1-1) is arranged on the circuit between low liquid level contact (2) and the second contact (6), the 6th contact (10), the first relay auxiliary contact (J1-1) and the first relay (J1) synchronization action;
Described the second relay (J2) comprises the second relay auxiliary contact (J2-1), second relay auxiliary contact (J2-1) is arranged on the circuit between low liquid level contact (2) and the 3rd contact (7), the 4th contact (8), the second relay auxiliary contact (J2-1) and the second relay (J2) synchronization action;
Between described the second relay auxiliary contact (J2-1) and the first high liquid level contact (3), diode (D) is set, the positive pole of diode (D) connects the second relay auxiliary contact (J2-1), and negative pole connects the first high liquid level contact (3).
4. the active/standby unwatering pump of cesspit according to claim 2 switches water level controller, it is characterized in that,
The grid of described the first field effect transistor (Q1) connects the first contact (5), source ground, and drain electrode connects the first relay (J1);
The grid of described the second field effect transistor (Q2) connects the 4th contact (8), source ground, and drain electrode connects the second relay (J2).
5. the active/standby unwatering pump of cesspit according to claim 1 switches water level controller, it is characterized in that,
Also comprise the positive source contact (1) be arranged in cesspit, positive source contact (1) is arranged on the minimum point of cesspit;
Described the first relay (J1), the second relay (J2) are electrically connected with positive source contact (1) respectively.
6. the active/standby unwatering pump of cesspit according to claim 1 switches water level controller, it is characterized in that,
Be connected in series the first resistance (R1) between described first high liquid level contact (3) and the first field effect transistor (Q1), between the second high liquid level contact (4) and the second field effect transistor (Q2), be connected in series the second resistance (R2).
7. the active/standby unwatering pump of cesspit according to claim 6 switches water level controller, it is characterized in that, described the first field effect transistor (Q1) is parallel with the 3rd resistance (R3), and the second field effect transistor (Q2) is parallel with the 4th resistance (R4).
8. the active/standby unwatering pump of cesspit according to claim 7 switches water level controller, it is characterized in that, the resistance of described the first resistance (R1), the second resistance (R2), the 3rd resistance (R3) and the 4th resistance (R4) is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520247081.5U CN204557237U (en) | 2015-04-22 | 2015-04-22 | The active/standby unwatering pump of cesspit switches water level controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520247081.5U CN204557237U (en) | 2015-04-22 | 2015-04-22 | The active/standby unwatering pump of cesspit switches water level controller |
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| CN204557237U true CN204557237U (en) | 2015-08-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337802A (en) * | 2016-09-23 | 2017-01-18 | 国网四川省电力公司达州供电公司 | Automatic pumping method for collecting well and pumping system based on automatic pumping method |
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2015
- 2015-04-22 CN CN201520247081.5U patent/CN204557237U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337802A (en) * | 2016-09-23 | 2017-01-18 | 国网四川省电力公司达州供电公司 | Automatic pumping method for collecting well and pumping system based on automatic pumping method |
| CN106337802B (en) * | 2016-09-23 | 2018-09-11 | 国网四川省电力公司达州供电公司 | Ponding well automatic pumping method and the pumping system based on this method |
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