CN211653476U - Wastewater treatment system and electric control detection circuit thereof - Google Patents
Wastewater treatment system and electric control detection circuit thereof Download PDFInfo
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- CN211653476U CN211653476U CN201922485662.3U CN201922485662U CN211653476U CN 211653476 U CN211653476 U CN 211653476U CN 201922485662 U CN201922485662 U CN 201922485662U CN 211653476 U CN211653476 U CN 211653476U
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Abstract
The utility model relates to a wastewater treatment system and automatically controlled detection circuitry thereof, including main circuit, the branch circuit of being connected with the main circuit, with the auxiliary circuit and the contactor of branch circuit connection. The branch circuit comprises one end electrically connected with the main circuit, and the other end of the branch circuit is connected with the equipment to be controlled. The auxiliary circuit comprises a first control circuit and a second control circuit which are connected in parallel, one end of the auxiliary circuit is connected with the first branch line, and the other end of the auxiliary circuit is connected with the third branch line; the contactor includes a main contact, and an auxiliary contact and a contact coil. The first control circuit comprises a first selection circuit, a second selection circuit and a selection switch which are connected in parallel; the second control circuit comprises a PLC control module, the second selection circuit is connected with the PLC control module, and the PLC control module is further connected with the second branch line. The selection switch synchronously controls the first selection circuit and the second selection circuit, can be divided into two modes of field local control and remote PLC control, and improves the reliability by utilizing the low-voltage control branch circuit.
Description
Technical Field
The utility model relates to a waste water treatment field, more specifically say, relate to a waste water treatment system and automatically controlled detection circuitry thereof.
Background
The waste water treatment system in the prior art is additionally provided with an intermediate component, detection elements in the traditional method are all direct current 24V, the charged state of main equipment cannot be directly detected, the main equipment acts together with an auxiliary mechanism through the principles of a mechanical connecting rod and the like, and when the main equipment acts, the auxiliary detection equipment is turned on.
The problem that arises in the above manner is that when the signal is detected by the auxiliary contact or the auxiliary device, only the mechanical state of the main device can be reflected, and the actual working state of the device cannot be accurately reflected.
For example, when power supply fails, the detection signal of the auxiliary equipment is still valid, and the equipment is still considered to be in a conducting state or a running state; when the auxiliary device fails, the primary device stops functioning, and if the mechanical connection between the primary device and the auxiliary device is loose or stuck, the signal detection will be unreliable.
For convenience of management, the main device and the detection device are not in the same electric cabinet or box, because the main device uses AC380V and AC220V three-phase five-wire system, and most of the detection devices use DC24V direct current detection, because the voltage grades are too different, the detection devices are inconvenient to place in one cabinet, and the construction period is increased. If the power distribution cabinet is placed in the same power distribution cabinet, a certain distance must be kept between strong current equipment and weak current equipment.
Two gears behind the change-over switch are provided with a start button and a stop button, when the power failure is recovered, the equipment can only operate by pressing the start button, and mainly after the power failure of the power grid is recovered, the power grid cannot be recovered to the state before the power failure.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a wastewater treatment system and automatically controlled detection circuitry thereof.
The utility model provides a technical scheme that its technical problem adopted is: an electronic control detection circuit of a wastewater treatment system is constructed, and comprises a main circuit, a branch circuit connected with the main circuit, an auxiliary circuit connected with the branch circuit, and a contactor;
the main circuit comprises a first main line, a second main line and a third main line, the branch circuit comprises a first branch line, a second branch line and a third branch line, one end of the first branch line, one end of the second branch line and one end of the third branch line are respectively and electrically connected with the first main line, the second main line and the third main line, and the other end of the branch circuit is connected with equipment to be controlled;
the auxiliary circuit comprises a first control circuit and a second control circuit which are connected in parallel, one end of the auxiliary circuit is connected with the first branch line, and the other end of the auxiliary circuit is connected with the third branch line;
the contactor comprises a main contact arranged on the branch circuit, and an auxiliary contact and a contact coil which are arranged on a line of the auxiliary circuit connected with the third branch circuit;
the first control circuit comprises a first selection circuit, a second selection circuit and selection switches arranged on the first selection circuit and the second selection circuit in parallel;
the second control circuit comprises a PLC control module, the second selection circuit is connected with the PLC control module, and the PLC control module is also connected with the second branch line;
when the first selection line is conducted, the PLC control module is closed, and when the second selection line is conducted, the PLC control module is started, so that the PLC control module controls the contactor to be conducted and disconnected.
Preferably, the PLC control module includes a first interface, a second interface, a third interface, and a relay, where the first interface is connected to the first branch line, the second interface and the relay are respectively connected to the second selection line, and the third interface is connected to the second branch line to respectively transmit signals.
Preferably, a relay contact corresponding to the relay is arranged on the second selection line, so that the relay is powered on after the second selection line is powered on.
Preferably, the second control circuit further comprises an interface module in communication connection with the PLC control module, and the interface module is further connected with the main circuit to provide an external power supply.
Preferably, the auxiliary circuit is further provided with a first indicator light between the auxiliary contact and the contact coil, and a second indicator light is connected between a line of the third interface connected with the second branch and a line between the first indicator light and the contact coil.
Preferably, the main circuit further includes a ground line, the ground line is connected to the first indicator light and the line between the contact coils, and the interface module is connected to the third main line and the ground line, respectively.
Preferably, a protection switch is arranged at one end of the branch circuit close to the main circuit.
Preferably, the equipment to be controlled is a waste water coagulation mixer.
A wastewater treatment system comprises the electric control detection circuit.
Implement the utility model discloses a effluent disposal system and automatically controlled detection circuitry thereof has following beneficial effect: the electric control detection circuit synchronously controls the first selection circuit and the second selection circuit by using the selection switch, and can be divided into two modes of field local control and remote PLC control, the PLC control mode can utilize the low-voltage control branch circuit according to the power-on state signal on the main circuit, the control on the branch circuit can be associated with the power-on state of the main circuit 1, and the safety and the reliability are improved.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic circuit diagram of an electric control detection circuit of a wastewater treatment system in an embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the wastewater treatment system in a preferred embodiment of the present invention includes an electric control detection circuit, and the electric control detection circuit of the wastewater treatment system includes a main circuit 1, a branch circuit 2 connected to the main circuit 1, an auxiliary circuit 3 connected to the branch circuit 2, and a contactor 4.
The main circuit 1 includes a first main line 11, a second main line 12, and a third main line 13, and the branch circuit 2 includes a first branch line 21, a second branch line 22, and a third branch line 23, one end of which is electrically connected to the first main line 11, the second main line 12, and the third main line 13, respectively.
The other end of the branch circuit 2 is connected to a device to be controlled 5, in this embodiment, the device to be controlled 5 is a wastewater coagulation mixer to assist in wastewater treatment, and in other embodiments, the device to be controlled 5 may also be a wastewater treatment machine or the like.
The auxiliary circuit 3 includes a first control line 31 and a second control line 32 connected in parallel, and one end of the auxiliary circuit 3 is connected to the first branch line 21 and the other end is connected to the third branch line 23. The contactor 4 comprises a main contact 41 arranged on the branch circuit 2, and an auxiliary contact 42 and a contact coil 43 arranged on the line of the auxiliary circuit 3 connected to the third branch 23.
The first control line 31 includes a first selection line 311, a second selection line 312, and a selection switch 313 disposed on the first selection line 311 and the second selection line 312, and the selection switch 313 can switch the working position to make the first selection line 311 or the second selection line 312 conduct respectively.
The second control circuit 32 includes a PLC control module 321, the second selection circuit 312 is connected to the PLC control module 321, the PLC control module 321 is further connected to the second branch line 22, and after the second selection circuit 312 is conducted, the PLC control module 321 is turned on to control the contactor 4.
When the first selection line 311 is turned on, the PLC control module 321 is turned off, and when the second selection line 312 is turned on, the PLC control module 321 is turned on, so that the PLC control module 321 controls the contactor 4 to be turned on and off.
The electric control detection circuit synchronously controls the first selection line 311 and the second selection line 312 through the selection switch 313, and can be divided into two modes of field local control and remote PLC control, the PLC control mode can utilize the low-voltage control subcircuit 2 according to the power-on state signal on the main circuit 1, the control on the subcircuit 2 can be associated with the power-on state of the main circuit 1, and safety and reliability are improved.
The PLC control module 321 includes a first interface a, a second interface b, a third interface c, and a relay d, where the first interface a is connected to the first branch line 21, the second interface b and the relay d are respectively connected to the second selection line 312, and the third interface c is connected to the second branch line 22 to respectively transmit signals.
The second selection line 312 is provided with a relay contact corresponding to the relay d, so that the relay d is energized after the second selection line 312 is energized.
The second control circuit 32 further includes an interface module 322 communicatively connected to the PLC control module 321, and collects signals of the IO module to perform data interaction with the PLC. In this embodiment, the model of the PLC control module 321 is TLS-I0248-0003, the model of the interface module 322 is TLS-PN, and the interface module 322 is further connected to the main circuit 1, and the PLC control module 321 may turn on or off the contactor 4 according to whether the main circuit 1 has an electrical signal, so as to supply power to the device to be controlled 5 or disconnect the power supply of the device to be controlled 5. Preferably, the interface module 322 and the PLC control module 321 are installed in the same cabinet body, so as to realize centralized control of high and low voltages.
The auxiliary circuit 3 is further provided with a first indicator light 33 between the auxiliary contact 42 and the contact coil 43, and a second indicator light 34 is connected between a line connected to the third interface c and the second branch 22 and a line between the first indicator light 33 and the contact coil 43. When the first selection line 311 is turned on, the first indicator lamp 33 is turned off and the second indicator lamp 34 is turned on, and when the second selection line 312 is turned on, the first indicator lamp 33 is turned on and the second indicator lamp 34 is turned off.
The main circuit 1 further comprises a ground line 14, the ground line 14 is connected to the first indicator light 33 and the line between the contact coils 43, and the interface module 322 is connected to the third main line 13 and the ground line 14, respectively.
Preferably, a protection switch 24 or a circuit breaker is disposed at one end of the branch circuit 2 close to the main circuit 1, and may function as a main switch as well as a protection branch circuit 2.
In the remote PLC control, the programmed program in the PLC control module 321 is sent to the control points of the first interface a, the second interface b, and the third interface c through the interface module 322, so that the contactor 4 acts and then feeds back the operating point to the IO interface module 322.
The interface module 322 receives a closing signal of the circuit breaker of the main circuit 1 when receiving the circuit, switches on the second selection line 312, and turns to the remote mode, the remote PLC control module 321 is activated to take effect, allows the PLC signal to operate the contactor 4, and receives a feedback signal after the contactor 4 is switched on.
It is to be understood that the above-described respective technical features may be used in any combination without limitation.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (9)
1. An electronic control detection circuit of a wastewater treatment system is characterized by comprising a main circuit (1), a branch circuit (2) connected with the main circuit (1), an auxiliary circuit (3) connected with the branch circuit (2), and a contactor (4);
the main circuit (1) comprises a first main line (11), a second main line (12) and a third main line (13), the branch circuit (2) comprises a first branch line (21), a second branch line (22) and a third branch line (23), one ends of the first branch line, the second branch line and the third branch line are respectively and electrically connected with the first main line (11), the second main line (12) and the third main line (13), and the other end of the branch circuit (2) is connected with equipment (5) to be controlled;
the auxiliary circuit (3) comprises a first control line (31) and a second control line (32) which are connected in parallel, one end of the auxiliary circuit (3) is connected with the first branch line (21), and the other end of the auxiliary circuit is connected with the third branch line (23);
the contactor (4) comprises a main contact (41) arranged on the branch circuit (2), and an auxiliary contact (42) and a contact coil (43) arranged on the line of the auxiliary circuit (3) connected with the third branch (23);
the first control line (31) comprises a first selection line (311) and a second selection line (312) which are connected in parallel, and a selection switch (313) arranged on the first selection line (311) and the second selection line (312);
the second control line (32) comprises a PLC control module (321), the second selection line (312) is connected with the PLC control module (321), and the PLC control module (321) is also connected with the second branch line (22);
when the first selection line (311) is conducted, the PLC control module (321) is closed, and when the second selection line (312) is conducted, the PLC control module (321) is started, so that the PLC control module (321) controls the conduction and the disconnection of the contactor (4).
2. The electrical control detection circuit of a wastewater treatment system according to claim 1, characterized in that the PLC control module (321) comprises a first interface (a), a second interface (b), a third interface (c) and a relay (d), wherein the first interface (a) is connected with the first branch line (21), the second interface (b) and the relay (d) are respectively connected with the second selection line (312), and the third interface (c) is connected with the second branch line (22) to respectively transmit signals.
3. The electronically controlled detection circuit of claim 2, wherein the second selection line (312) is provided with a relay contact corresponding to the relay (d) to energize the relay (d) when the second selection line (312) is energized.
4. The electronic control detection circuit of a wastewater treatment system according to claim 2, characterized in that the second control circuit (32) further comprises an interface module (322) communicatively connected with the PLC control module (321), the interface module (322) being further connected with the main circuit (1) for external power supply.
5. The electronic control detection circuit of a wastewater treatment system according to claim 4, characterized in that the auxiliary circuit (3) is further provided with a first indicator light (33) between the auxiliary contact (42) and the contact coil (43), and a second indicator light (34) is connected between the line of the third interface (c) connected with the second branch (22) and the line between the first indicator light (33) and the contact coil (43).
6. The electronic control detection circuit of a wastewater treatment system according to claim 5, characterized in that the main circuit (1) further comprises a ground wire (14), the ground wire (14) is connected with the first indicator light (33) and the contact coil (43), and the interface module (322) is respectively connected with the third main line (13) and the ground wire (14).
7. The electrically controlled detection circuit of a wastewater treatment system according to any of the claims 1 to 6, characterized in that a protection switch (24) is arranged on one end of the branch circuit (2) close to the main circuit (1).
8. An electrically controlled detection circuit for a wastewater treatment system according to any of claims 1 to 6, characterized in that the device (5) to be controlled is a wastewater mixer.
9. A wastewater treatment system comprising an electronically controlled detection circuit according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922485662.3U CN211653476U (en) | 2019-12-30 | 2019-12-30 | Wastewater treatment system and electric control detection circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922485662.3U CN211653476U (en) | 2019-12-30 | 2019-12-30 | Wastewater treatment system and electric control detection circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211653476U true CN211653476U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922485662.3U Active CN211653476U (en) | 2019-12-30 | 2019-12-30 | Wastewater treatment system and electric control detection circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211653476U (en) |
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2019
- 2019-12-30 CN CN201922485662.3U patent/CN211653476U/en active Active
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