Automatic control device for rain and sewage switching

Abstract

The utility model relates to the technical field of rain and sewage switching, in particular to an automatic control device for rain and sewage switching, which comprises a mechanical flashboard gate arranged at a water inlet of an initial rainwater collecting tank; the electric actuating mechanism is used for controlling the lifting of the mechanical flashboard gate; the low-voltage control cabinet is arranged on the ground beside the electric actuating mechanism and is used for supplying power to the automatic control device; the rainfall detection sensor is mounted at the top of the low-voltage control cabinet; and the time relay is arranged in the low-voltage control cabinet and is used for receiving a signal sent by the rainfall detection sensor and controlling the start and stop of the electric actuating mechanism. The rainfall detection sensor is used for detecting rainfall, the time relay is used for receiving signals sent by the rainfall detection sensor, and the electric actuating mechanism is used for controlling the flashboard to ascend and descend, so that initial rainwater collection and automatic switching control are realized, and the problem that rainfall time cannot be accurately grasped due to manual control of rain and sewage switching is solved.

Description

Technical Field

[0001] This utility model relates to the field of rainwater and sewage switching technology, specifically to an automatic control device for rainwater and sewage switching. Background Technology

[0002] According to the "Environmental Protection Engineering Design Standard for Chemical Construction Projects" (GB / T50483-2019), initial polluted rainwater refers to rainwater generated at the initial stage of rainfall in the polluted area. It is advisable to take the rainfall amount in the first 15-30 minutes of a single rainfall event, or the rainfall amount with a thickness of 20-30 mm at the beginning of the rainfall event.

[0003] In practice, initial rainwater is typically collected in initial rainwater collection tanks / reservoirs, and then switched to external discharge through rainwater ditches / pipelines after initial rainwater collection is complete. This switching is usually accomplished using valve devices, as manual control cannot accurately control the timing, and the exact start time of rainfall is difficult to pinpoint.

[0004] Therefore, an automatic control device for switching between rainwater and sewage needs to be designed. This device can automatically detect rainfall, automatically time the process, and automatically activate the switching valve when the set countdown ends, thus achieving automatic control of the entire process of initial rainwater collection and switching. Utility Model Content

[0005] The purpose of this invention is to provide an automatic control device for switching between rainwater and sewage.

[0006] This utility model provides the following technical solution:

[0007] This invention proposes an automatic control device for switching between rainwater and sewage.

[0008] A mechanical gate valve is installed at the inlet of the initial rainwater collection tank.

[0009] An electric actuator is used to control the raising and lowering of the mechanical gate.

[0010] A low-voltage control cabinet, located on the ground next to the electric actuator, is used to supply power to the automatic control device;

[0011] A rainfall detection sensor is installed on the top of the low-voltage control cabinet;

[0012] A time relay, installed in the low-voltage control cabinet, receives signals from the rainfall detection sensor and controls the start and stop of the electric actuator.

[0013] Furthermore, the mechanical gate includes a gate frame and a gate plate disposed between the two walls of the gate frame. A screw driven up and down by the electric actuator passes through the top of the gate frame, and the lower end of the screw is disposed on the top of the gate plate.

[0014] Furthermore, the electric actuator has a handwheel that enables manual drive of the screw to move up and down.

[0015] Furthermore, rainfall detection sensors include rain and snow sensors and rainfall sensors.

[0016] Furthermore, the low-voltage control cabinet is equipped with a switch for switching between the rain and snow sensor and the rainfall sensor.

[0017] Compared with existing technologies, this utility model uses a rainfall detection sensor to detect rainfall, and a time relay receives the signal emitted by the rainfall detection sensor. Then, an electric actuator controls the raising and lowering of the gate, thereby realizing the automatic control of initial rainwater collection and switching. This solves the problem that manual control of rainwater and sewage switching cannot accurately grasp the rainfall time. This device has a simple structure, low cost, is easy to replicate, and has a wide range of applications. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the actual application location of this utility model (the arrows in the diagram indicate the direction of water flow).

[0019] Figure 2 This is a schematic diagram of the electrical connection relationship of the structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the mechanical gate.

[0021] In the diagram, 00-rainwater ditch; 01-water retaining wall; 02-initial rainwater collection tank; 1-mechanical gate; 11-gate frame; 12-gate plate; 13-screw; 2-low voltage control cabinet; 3-electric actuator; 31-handwheel; 4-time relay; 5-switch; 6-rain and snow sensor; 7-rainfall sensor. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] The electric actuator model used in the following embodiments is: BD30-C6JC-C12; the time relay model is: AH3D-DM; the low-voltage control cabinet model is: ZJQ-1GB-3; the rain and snow sensor model is: NHYX43; and the rain sensor model is: L301.

[0024] In one embodiment of this utility model, an automatic control device for switching between rainwater and sewage is provided.

[0025] Mechanical gate 1 is installed at the inlet of the initial rainwater collection tank 02;

[0026] The electric actuator 3 is used to control the raising and lowering of the mechanical gate 1;

[0027] The low-voltage control cabinet 2 is installed on the ground next to the electric actuator 3. The mains power is converted into low voltage through the low-voltage control cabinet to power the automatic control device.

[0028] Rainfall detection sensors 6 and / or 7 are installed on the top of the low-voltage control cabinet 2;

[0029] The time relay 4 is installed in the low-voltage control cabinet 2, receives signals from the rainfall detection sensor 6 and / or 7, and controls the start and stop of the electric actuator 3;

[0030] See Figure 1 and Figure 2 In practical applications, when there is no rainfall, the mechanical gate 1 is normally open (i.e., the rainwater ditch 00 and the initial rainwater discharge pool 02 are connected and not isolated). When it rains, the initial rainwater flows into the initial rainwater discharge pool 02 along the rainwater ditch 00. The rainfall detection sensor 6 or / and 7 detects the rainfall and sends a signal to the time relay 4 in the low-voltage control cabinet. The time relay 4 starts counting down according to the set time. After the countdown ends, it sends a closing signal to the electric actuator 3 (which is normally open when there is no rainfall), driving the mechanical gate 1 to close (i.e., the rainwater in the rainwater ditch 00 can no longer enter the initial rainwater discharge pool 02). After the mechanical gate 1 closes, the water level in the rainwater ditch 00 gradually rises. When the water level is higher than the water retaining wall 01, it overflows to the downstream rainwater ditch and is finally discharged to the factory. When the rainfall stops and the rainfall detection sensor can no longer detect rainfall, the signal is interrupted, and the electric actuator 3 drives the mechanical gate 1 to open, restoring the default state.

[0031] See Figure 3In one embodiment of this utility model, the mechanical gate 1 includes a gate frame 11 and a gate plate 12 disposed between the two walls of the gate frame 11. A screw 13 driven up and down by the electric actuator is inserted through the top of the gate frame 11. The lower end of the screw 13 is disposed on the top of the gate plate 12. The principle of driving the screw up and down by the conventional electric actuator is consistent with that known to those skilled in the art and need not be described in detail. When there is no rainfall, the mechanical gate 1 is in the normally open state (default state), that is, the gate plate 12 is located at the upper part of the gate frame 11. At this time, the rainwater ditch 00 and the initial rainwater discharge pool 02 are in a connected and uninterrupted state. When it rains, the initial rainwater flows into the initial rainwater discharge pool 02 along the rainwater ditch 00. The rainfall detection sensor 6 or / and 7 Upon detecting rainfall, a signal is sent to the time relay 4 in the low-voltage control cabinet. The time relay 4 begins a countdown according to the set time. After the countdown ends, a closing signal is sent to the electric actuator 3, which drives the mechanical gate 1 to close. That is, the gate 12 descends to the lower part of the gate frame 11. At this time, the gate 12 isolates the connection between the rainwater ditch 00 and the initial rainwater discharge pool 02, and the rainwater in the rainwater ditch 00 can no longer enter the initial rainwater discharge pool 02. After the mechanical gate 1 closes, the water level in the rainwater ditch 00 gradually rises. When the water level is higher than the water retaining wall 01, it overflows to the downstream rainwater ditch and is finally discharged from the plant. When the rainfall stops and the rainfall detection sensor no longer detects rainfall, the signal is interrupted, and the electric actuator 3 drives the mechanical gate 1 to open, restoring the default state.

[0032] In one embodiment of this utility model, the electric actuator 3 has a handwheel 31 that can manually drive the screw 13 to move up and down; when the electric actuator 3 is unable to drive the screw 13 to move due to factors such as power failure, the handwheel 31 can be used to drive the screw to move, thereby realizing the lifting and lowering of the gate 12.

[0033] In one embodiment of the present invention, the rainfall detection sensor includes a rain and snow sensor 6 and a rainfall sensor 7; rainfall is detected by the rain and snow sensor 6 and / or the rainfall sensor 7, and the signal emitted by the rainfall detected by the rain and snow sensor 6 and / or the rainfall sensor 7 is received by the time relay 4.

[0034] In the above embodiments, see Figure 2 The low-voltage control cabinet 2 is equipped with a switch for switching between the rain and snow sensor 6 and the rainfall sensor 7; it can detect rainfall by only one of them, or it can allow both sensors to detect rainfall simultaneously, increasing the selectivity and reliability of the entire device.

[0035] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. An automatic control device for rainwater and sewage switching, characterized in that: a mechanical plug gate is arranged at the inlet of a preliminary rainwater collection tank; an electric actuator is used to control the lifting of the mechanical plug gate; a low-voltage control cabinet is arranged on the ground beside the electric actuator to supply power to the automatic control device; a rainfall detection sensor is installed on the top of the low-voltage control cabinet; a time relay is installed in the low-voltage control cabinet to receive signals from the rainfall detection sensor and control the start and stop of the electric actuator. The mechanical plug gate comprises a gate frame and a gate plate arranged between the two walls of the gate frame, a screw rod driven by the electric actuator is arranged on the top of the gate frame and moves up and down, and the lower end of the screw rod is arranged on the top of the gate plate. The electric actuator has a hand wheel that can manually drive the screw rod to move up and down. The rainfall detection sensor comprises a rain and snow sensor and a rainfall sensor. The low-voltage control cabinet is provided with a switch for switching the rain and snow sensor and the rainfall sensor. ​ 2. An automatic control device for rain sewage switching according to claim 1, characterized in that: ​ 3. An automatic control device for rain sewage switching according to claim 2, characterized in that: ​ 4. The automatic control device for rain sewage switching according to claim 1, characterized in that: ​ 5. An automatic control device for rain sewage switching according to claim 4, characterized in that: ​

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