CN211692774U - Sanitation car water pump electrical control system - Google Patents
Sanitation car water pump electrical control system Download PDFInfo
- Publication number
- CN211692774U CN211692774U CN202020175206.9U CN202020175206U CN211692774U CN 211692774 U CN211692774 U CN 211692774U CN 202020175206 U CN202020175206 U CN 202020175206U CN 211692774 U CN211692774 U CN 211692774U
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- Prior art keywords
- relay
- water pump
- water level
- ball switch
- floating ball
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 148
- 230000003068 static effect Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model relates to an electric control system of a sanitation vehicle water pump, which mainly comprises a control circuit, a main circuit and an indication alarm circuit; the control circuit controls the relay KA2 through a self-locking circuit formed by the relay KA1 and the floating ball switch, and further controls the main circuit and the indicating alarm circuit. When the water level fluctuates near the lower floating ball switch, the upper floating ball switch is higher than the lower floating ball switch by a certain distance, and the relay KA1 and the upper floating ball switch form a self-locking circuit, so that the states of the relay KA1 and the relay KA2 are kept unchanged, and the water pump cannot be frequently started and stopped at the low water level due to surge generated when a vehicle works. The utility model discloses a principle is simple, and is with low costs, need not the automatic shutdown of water pump when programming can realize the low water level, has solved the sanitation car water pump because the reason of surging causes the water pump that appears when the water level is lower frequently start and the problem that stops to have low water level suggestion and alarming function. Belongs to the field of electrical control.
Description
Technical Field
The utility model relates to a sanitation car water pump electrical control system belongs to the electrical control field.
Background
Along with the development of society, sanitation cars such as watering lorries, dust absorption cars, washing and sweeping cars are used more and more, and all these sanitation cars need to use a large amount of water when working. As is known, in the running process of a vehicle, because of factors such as unstable vehicle speed, water in a water tank generates great surge, and the surge can cause the water level to be suddenly high or low. General sanitation car all can control the work of water pump through detecting water tank water level height, and the water pump stop work when the water level is less than the water level of setting for the lower limit promptly, and the water pump just can work when being higher than the water level lower limit. However, due to surge, the water level is unstable, and when the water level is close to the lower limit of the water level, the water level is higher than the lower limit and lower than the lower limit, so that the water pump is frequently started and stopped, and great damage is caused to the water pump and a control system.
Disclosure of Invention
The utility model discloses a solve the sanitation car water pump because the reason of surge causes the water pump that appears when the water level is lower frequently start with the problem that stops, through using come-up ball switch K1 and lower ball switch K2 joint control relay KA1, form control self-locking circuit, come-up ball switch K1 is higher than the appropriate distance of ball switch K2 that floats down, relay KA1 control relay KA2, relay KA2 control low water level indicating circuit and low water level warning circuit and water pump automatic stop circuit. Therefore, the water pump motor can be started when the water level is higher than the upper floating ball switch K1, and the water pump automatically stops when the water level is lower than the lower floating ball switch K2. Utilize relay KA 2's normally closed contact control low water level pilot lamp L and low water level buzzer H, realized that low water level pilot lamp opens when the water level is less than lower float switch, suggestion operating personnel water level is low excessively, if open water pump switch when low water level, buzzer sounds, and warning operating personnel water level is low excessively, and the water pump is out of work, please add water!
The utility model discloses a realize through following technical scheme: an electric control system of a sanitation truck water pump comprises a control circuit, a main circuit and an indication alarm circuit;
control circuit includes power, come-up ball switch K1, lower ball switch K2, relay KA1, relay KA2, its characterized in that: the input of lower ball-floating switch K2 connect in the positive pole of power, lower ball-floating switch K2's output connect in ball-floating switch K1's input forms node J1, ball-floating switch K1's output connect in relay KA 1's coil is anodal, forms node J2, relay KA 1's coil negative pole connect in the negative pole of power, relay KA 1's stationary contact C1 connect in node J1, relay KA 1's normally open contact NO1 connect in node J2 constitutes control self-locking circuit, relay KA 2's coil positive pole connect in node J2, relay KA 2's coil negative pole connect in the negative pole of power.
The main circuit includes water pump switch SB1, water pump motor M, its characterized in that: the negative pole of water pump motor M connect in the normally open contact NO2 of relay KA2, the stationary contact C2 of relay KA2 connect in the negative pole of power, the positive pole of water pump motor M connect in the output of water pump switch SB1 forms node J4, the input of water pump switch SB1 connects in the positive pole of power.
The indicating and alarming circuit comprises a low water level indicator lamp L, a low water level buzzer H and a diode D, and is characterized in that: the anode of the low water level indicator lamp L is connected with the anode of the power supply, the cathode of the low water level indicator lamp L is connected with the normally closed contact NC2 of the relay KA2 to form a junction J3, and a low water level indicating circuit is formed; the negative electrode of the low water level buzzer H is connected to the junction J3, the positive electrode of the low water level buzzer H is connected to the negative electrode of the diode D, and the positive electrode of the diode D is connected to the junction J4, so that a low water level alarm circuit is formed.
The upper float ball switch K1 is higher than the lower float ball switch K2, and the distance between the upper float ball switch K1 and the lower float ball switch K2 is 5cm-20cm, so that the upper float ball switch K1 can be prevented from being continuously closed and opened due to surge when the water level reaches the lower float ball switch K2.
The power supply is a power supply of a vehicle.
An electric control method for a sanitation truck water pump is characterized by comprising the following steps: when adding water to the water tank, reach as the water level during lower ball switch K2's position floats, lower ball switch K2 is closed, reaches as the water level when floating ball switch K1's position, floating ball switch K1 is closed, relay KA 1's coil gets electricity, relay KA 1's normally open contact NO1 is closed, relay KA1 auto-lock, relay KA2 coil gets electricity, relay KA 2's normally open contact NO2 is closed, water pump motor M's negative pole with the negative pole of power switches on, water pump motor M can work, relay KA 2's normally closed contact NC2 disconnection, indicate alarm circuit's negative pole with the negative pole disconnection of power.
When the water pump motor M works and the water level is lower than the upper float switch K1, the water pump motor M can continue to work due to the fact that the relay KA1 is in a self-locking state; the water level is less than during float switch K2 down, relay KA 1's coil loses the electricity, relay KA 1's normally open contact NO1 disconnection, relay KA 2's coil loses the electricity, relay KA 2's normally open contact NO2 disconnection, water pump motor M stop work, relay KA 2's normally closed contact NC2 is closed, low water level pilot lamp L opens, low water level bee calling organ H buzzes.
When the indication alarm circuit works, the water pump switch SB1 is closed, the low water level buzzer H stops buzzing, and the low water level indicator lamp L keeps an open state and is used for prompting the operator that the water level is too low.
When the water level reaches the position near the lower floating ball switch K2, surge can cause the continuous closing and opening of the lower floating ball switch K2, the upper floating ball switch K1 is higher than the lower floating ball switch K2 by 5cm-20cm, surge cannot cause the closing of the upper floating ball switch K1, a coil of the relay KA1 cannot be electrified, a normally open contact NO1 of the relay KA1 cannot be closed, the relay KA1 cannot be self-locked, a coil of the relay KA2 cannot be electrified, a normally open contact NO2 of the relay KA2 is in an open state, and the water pump motor M keeps a stop state.
Drawings
Fig. 1 is a schematic circuit diagram.
Fig. 2 is a schematic diagram of a relay contact.
Detailed Description
An electric control system of a sanitation truck water pump comprises a control circuit, a main circuit and an indication alarm circuit;
control circuit includes power, come-up ball switch K1, lower ball switch K2, relay KA1, relay KA2, its characterized in that: the input of lower ball-floating switch K2 connect in the positive pole of power, lower ball-floating switch K2's output connect in ball-floating switch K1's input forms node J1, ball-floating switch K1's output connect in relay KA 1's coil is anodal, forms node J2, relay KA 1's coil negative pole connect in the negative pole of power, relay KA 1's stationary contact C1 connect in node J1, relay KA 1's normally open contact NO1 connect in node J2 constitutes control self-locking circuit, relay KA 2's coil positive pole connect in node J2, relay KA 2's coil negative pole connect in the negative pole of power.
The main circuit includes water pump switch SB1, water pump motor M, its characterized in that: the negative pole of water pump motor M connect in the normally open contact NO2 of relay KA2, the stationary contact C2 of relay KA2 connect in the negative pole of power, the positive pole of water pump motor M connect in the output of water pump switch SB1 forms node J4, the input of water pump switch SB1 connects in the positive pole of power.
The indicating and alarming circuit comprises a low water level indicator lamp L, a low water level buzzer H and a diode D, and is characterized in that: the anode of the low water level indicator lamp L is connected with the anode of the power supply, the cathode of the low water level indicator lamp L is connected with the normally closed contact NC2 of the relay KA2 to form a junction J3, and a low water level indicating circuit is formed; the negative electrode of the low water level buzzer H is connected to the junction J3, the positive electrode of the low water level buzzer H is connected to the negative electrode of the diode D, and the positive electrode of the diode D is connected to the junction J4, so that a low water level alarm circuit is formed.
The upper float ball switch K1 is higher than the lower float ball switch K2, and the distance between the upper float ball switch K1 and the lower float ball switch K2 is 5cm-20cm, so that the upper float ball switch K1 can be prevented from being switched on and off due to surge when the water level reaches the lower float ball switch K2.
The power supply is a power supply of a vehicle.
The utility model discloses a working process as follows: when adding water to the water tank, when the water level reaches when lower ball switch K2's position, lower ball switch K2 is closed, when the water level reaches when floating ball switch K1's position, floating ball switch K1 is closed, relay KA 1's coil is got electric, relay KA 1's normally open contact NO1 is closed, relay KA1 auto-lock, relay KA 2's coil is got electric, relay KA 2's normally open contact NO2 is closed, water pump motor M's negative pole with the negative pole of power switches on, water pump motor M can work, relay KA 2's normally closed contact NC2 disconnection, indicate alarm circuit's negative pole with the negative pole disconnection of power. After water is added, the vehicle starts to work, a water pump switch SB1 is manually turned on, a water pump motor M starts to work, the water level can be gradually reduced along with the work, when the water level is lower than the floating ball switch K1, the upper floating ball switch K1 is switched off, as the relay KA1 forms a self-locking circuit, the normally open contact NO1 of the relay KA1 can not be switched off, the coil of the relay KA2 is kept in a power-on state, and the water pump motor M continues to work; when the water level is lower than the lower floating ball switch K2, the coil of the relay KA1 loses electricity, the normally open contact NO1 of the relay KA1 is disconnected, the coil of the relay KA2 loses electricity, the normally open contact NO2 of the relay KA2 is disconnected, the water pump motor stops working, the normally closed contact of the relay KA2 is closed, the low water level indicator lamp L is turned on, the low water level buzzer H buzzes to prompt an operator that the water level is too low and the water pump stops working, and the operator continues working after adding water; at this time, the water pump switch SB1 is turned off, the low water level buzzer H stops buzzing, and the low water level indicator lamp L remains on for raising the water level of the operator to low. When the water level reaches the position near the lower floating ball switch K2, surge can cause the continuous closing and opening of the lower floating ball switch K2, the upper floating ball switch K1 is higher than the lower floating ball switch K2 by 5cm-20cm, surge cannot cause the closing of the upper floating ball switch K1, a coil of the relay KA1 cannot be electrified, a normally open contact NO1 of the relay KA1 cannot be closed, the relay KA1 cannot be self-locked, a coil of the relay KA2 cannot be electrified, a normally open contact NO2 of the relay KA2 is in an open state, and the water pump motor M keeps a stop state. Therefore, when the water level is lower than the lower float switch K2, the water pump motor M automatically stops working, and frequent starting and stopping of the water pump motor M caused by surge can be prevented.
Claims (3)
1. An electric control system of a sanitation truck water pump comprises a control circuit, a main circuit and an indication alarm circuit;
control circuit includes power, come-up ball switch K1, lower ball switch K2, relay KA1, relay KA2, its characterized in that: the input end of the lower floating ball switch K2 is connected to the positive electrode of the power supply, the output end of the lower floating ball switch K2 is connected to the input end of the upper floating ball switch K1 to form a junction J1, the output end of the upper floating ball switch K1 is connected to the positive electrode of the relay KA1 coil to form a junction J2, the negative electrode of the relay KA1 coil is connected to the negative electrode of the power supply, the stationary contact C1 of the relay KA1 is connected to the junction J1, the normally open contact NO1 of the relay KA1 is connected to the junction J2 to form a control self-locking circuit, the positive electrode of the relay KA2 coil is connected to the junction J2, and the negative electrode of the relay KA2 coil is connected to the negative electrode of the power supply;
the main circuit includes water pump switch SB1, water pump motor M, its characterized in that: the negative electrode of the water pump motor M is connected with a normally open contact NO2 of the relay KA2, a static contact C2 of the relay KA2 is connected with the negative electrode of the power supply, the positive electrode of the water pump motor M is connected with the output end of the water pump switch SB1 to form a junction point J4, and the input end of the water pump switch SB1 is connected with the positive electrode of the power supply;
the indicating and alarming circuit comprises a low water level indicator lamp L, a low water level buzzer H and a diode D, and is characterized in that: the anode of the low water level indicator lamp L is connected with the anode of the power supply, the cathode of the low water level indicator lamp L is connected with the normally closed contact NC2 of the relay KA2 to form a junction J3, and a low water level indicating circuit is formed; the negative electrode of the low water level buzzer H is connected to the junction J3, the positive electrode of the low water level buzzer H is connected to the negative electrode of the diode D, and the positive electrode of the diode D is connected to the junction J4, so that a low water level alarm circuit is formed.
2. The sanitation truck water pump electrical control system of claim 1, wherein: the upper floating ball switch K1 is higher than the lower floating ball switch K2, and the distance between the upper floating ball switch K1 and the lower floating ball switch K2 is 5cm-20 cm.
3. The sanitation truck water pump electrical control system of claim 1, wherein: the power supply is a power supply of a vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020175206.9U CN211692774U (en) | 2020-02-17 | 2020-02-17 | Sanitation car water pump electrical control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020175206.9U CN211692774U (en) | 2020-02-17 | 2020-02-17 | Sanitation car water pump electrical control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211692774U true CN211692774U (en) | 2020-10-16 |
Family
ID=72777125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020175206.9U Withdrawn - After Issue CN211692774U (en) | 2020-02-17 | 2020-02-17 | Sanitation car water pump electrical control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211692774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075700A (en) * | 2020-02-17 | 2020-04-28 | 上海神舟精宜汽车制造有限公司 | Electric control system and control method for sanitation truck water pump |
-
2020
- 2020-02-17 CN CN202020175206.9U patent/CN211692774U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075700A (en) * | 2020-02-17 | 2020-04-28 | 上海神舟精宜汽车制造有限公司 | Electric control system and control method for sanitation truck water pump |
| CN111075700B (en) * | 2020-02-17 | 2024-03-08 | 上海神舟精宜汽车制造有限公司 | Electric control system and control method for water pump of sanitation truck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20201016 Effective date of abandoning: 20240308 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20201016 Effective date of abandoning: 20240308 |