KR20250071806A - System for sewage draining with anti-clog pumps - Google Patents

Abstract

The embodiments relate to a sewage drainage system, comprising: a chamber section including a storage tank in which sewage flowing in from a sewage inlet pipe is stored until discharged; a pump section disposed inside the chamber section and grinding foreign substances contained in the sewage stored in the chamber section and simultaneously discharging the sewage and the foreign substances; a drain section communicating with the pump section and serving as a passage for draining the sewage and the foreign substances from the pump section; and a control section for regulating the water level of the sewage in the storage tank.

Description

{SYSTEM FOR SEWAGE DRAINING WITH ANTI-CLOG PUMPS}

Embodiments of the present invention relate to a sewage drainage system.

Generally, sewage generated in a building is collected and discharged by sewage discharge devices, and sewage treatment tanks are buried underground using synthetic resin materials such as FRP or PE. In residential or commercial buildings, sewage discharge devices are sometimes installed in underground spaces to maximize space utilization. In the case of small and medium-sized sewage treatment tanks, a pit is dug, the sewage treatment tank is placed in the pit, and then soil is filled around the sewage treatment tank. In the case of medium and large-sized sewage treatment tanks, a pit is dug, a concrete floor is poured, and the sewage treatment tank is installed on top of it.

A sewage pump device is installed in the sewage treatment tank. The sewage treatment system according to the conventional technology is composed of multiple pump devices and a central control device for managing them. When a problem occurs in each pump device or an emergency situation occurs, the status information of each pump station is transmitted to the central control device, and the central control device monitors this and manages each pump station.

Unlike general submersible pumps, sewage pumps are subject to frequent clogging, a phenomenon in which the flow path is blocked, due to their characteristics of having to transport sewage, a fluid containing foreign substances. Clogging can reduce the head efficiency of the sewage pump or cause the pump to malfunction or be damaged. If the sewage pump malfunctions, the amount of water collected in the sewage treatment tank may increase, and sewage may even flow backwards. If multiple sewage pumps are installed in a sewage treatment tank, there is a concern that the amount of collected water may not be pumped up to an appropriate level if some of the pumps malfunction. In other words, a system is required in which only some of the multiple sewage pumps are not overused and are evenly utilized.

In addition, in the case of a sewage treatment tank equipped with multiple sewage pump devices, it is important to determine whether to operate all, some, or none of the multiple sewage pump devices depending on the amount of sewage in the sewage treatment tank. In addition, even if some of the sensors measuring the water level in the sewage treatment tank are broken, a system is required that automatically sets the operation mode of the sewage pump devices by determining whether the water level is high, medium, or low.

Republic of Korea Patent Publication No. 10-2246436

Embodiments of the present invention are intended to improve the problems of conventional sewage treatment as described above, and to provide a sewage drainage system capable of preventing a pump unit from idling at a low water level or low water level.

In addition, embodiments of the present invention aim to provide a sewage drainage system capable of resolving a blockage phenomenon caused by foreign substances by causing the pump unit to rotate in reverse or idle.

In addition, embodiments of the present invention aim to provide a sewage drainage system capable of operating a plurality of pumps evenly so that the total operating times of the plurality of pump units are equal to each other.

In addition, embodiments of the present invention aim to provide a sewage drainage system in which a pump unit can operate normally even if an abnormality occurs in a water level sensor.

The technical tasks to be achieved in the embodiments are not limited to those mentioned above, and other technical tasks not mentioned can be considered by a person having ordinary skill in the art from the various embodiments described below.

According to embodiments, a sewage drainage system may include a chamber section including a storage tank in which sewage flowing in from a sewage inlet pipe is stored until discharged; a pump section disposed inside the chamber section and grinding foreign substances contained in the sewage stored in the chamber section and simultaneously discharging the sewage and the foreign substances; a drain section connected to the pump section and serving as a passage for draining the sewage and the foreign substances from the pump section; and a control section for regulating the water level of the sewage in the storage tank.

In addition, according to embodiments, the control unit includes a current sensor for measuring a current flowing in the pump unit; a pump control module for controlling an operation of the pump unit; and a main controller for comparing the current measured by the current sensor with the rated current of the pump unit, wherein the main controller determines that a blockage phenomenon due to the foreign substance has occurred in the pump unit when the current measured by the current sensor is greater than the rated current, and causes the pump unit to alternately repeat reverse rotation and forward rotation operations by the pump control module.

In addition, according to embodiments, the chamber section further includes a water level sensor module including a low-level sensing floater for sensing a low water level of the wastewater in the storage tank, a medium-level sensing floater for sensing a medium water level, and a high-level sensing floater for sensing a high water level, and the main controller determines that idling has occurred in the pump section when the current measured by the current sensor is less than the rated current and the water level of the wastewater detected by the water level sensor module is a low water level or a low water level, and can cause the pump section to be stopped by the pump control module.

In addition, according to embodiments, the pump unit is configured with a plurality of pumps, including a first pump and a second pump, and the first pump and the second pump are operated in a simultaneous operation mode, an alternate operation mode, or a simultaneous stop mode, and the main controller detects the number of operations and the operating hours of the first pump and the second pump, respectively, and compares the total operating hours of the first pump and the total operating hours of the second pump, and controls the pump control module so that, in the alternate operation mode, a pump with a shorter total operating time is operated before a pump with a longer total operating time.

In addition, according to embodiments, the main controller controls the pump control module to operate the first pump and the second pump in the simultaneous operation mode when (i) the low water level is not detected by the low water level sensing plotter, the medium water level is detected by the medium water level sensing plotter, and the high water level is detected by the high water level sensing plotter, (ii) the low water level is not detected by the low water level sensing plotter, the medium water level is not detected by the medium water level sensing plotter, and the high water level is detected by the high water level sensing plotter, controls the pump control module to operate the first pump and the second pump in the simultaneous operation mode, and (iii) the low water level is not detected by the low water level sensing plotter, the medium water level is detected by the medium water level sensing plotter, and the high water level is not detected by the high water level sensing plotter, controls the pump control module to operate the first pump and the second pump in the alternate operation mode. You can control the module.

In addition, according to embodiments, the control unit further includes a display for indicating the current status and the operating status of the pump unit and the chamber unit, and (i) when the low water level is not detected by the low water level sensing floater, the medium water level is detected by the medium water level sensing floater, and the high water level is detected by the high water level sensing floater, the display displays a high water level alarm and a low water level sensing floater abnormality, (ii) when the low water level is not detected by the low water level sensing floater, the medium water level is not detected by the medium water level sensing floater, and the high water level is detected by the high water level sensing floater, the display displays a high water level alarm and a low water level sensing floater and a medium water level sensing floater abnormality, (iii) when the low water level is not detected by the low water level sensing floater, the medium water level is detected by the medium water level sensing floater, and the high water level is not detected by the high water level sensing floater, the display displays a medium water level alarm. and can display low water level sensing plotter abnormalities.

According to a sewage drainage system according to one embodiment of the present invention, the pump unit can be prevented from idling at a low water level or low water level.

In addition, according to the sewage drainage system according to one embodiment of the present invention, the phenomenon of blockage caused by foreign substances can be resolved by causing the pump unit to rotate in reverse or idle.

In addition, according to a sewage drainage system according to one embodiment of the present invention, a sewage drainage system capable of evenly operating a plurality of pumps so that the total operating times of the plurality of pump sections are equal can be provided.

In addition, according to a sewage drainage system according to one embodiment of the present invention, a sewage drainage system can be provided in which a pump unit can operate normally even if an abnormality occurs in a water level sensor.

The effects that can be obtained from the examples are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly derived and understood by a person having ordinary skill in the art based on the detailed description below.

The accompanying drawings, which are included as part of the detailed description to aid in understanding the embodiments, provide various embodiments and, together with the detailed description, describe technical features of the various embodiments.
FIG. 1 is a schematic drawing for explaining a sewage drainage system according to one embodiment of the present invention.
Figure 2 is a cross-sectional view illustrating a pump unit according to one embodiment of the present invention.
FIG. 3 is a block diagram illustrating a sewage drainage system according to one embodiment of the present invention.
Figure 4 is a flowchart showing a control method of a sewage drainage system according to one embodiment of the present invention.
FIG. 5 is a drawing showing an operating state at a low water level when a sewage drainage system according to one embodiment of the present invention is operating normally. FIG. 5 (a) shows the inside of a storage tank, and FIG. 5 (b) is a drawing showing a part of a screen appearing on a display of a control unit.
FIG. 6 is a drawing showing an operating state at a medium water level when a sewage drainage system according to one embodiment of the present invention is operating normally. FIG. 6 (a) shows the inside of a storage tank, and FIG. 6 (b) is a drawing showing a part of a screen appearing on a display of a control unit.
FIG. 7 is a drawing showing an operating state at a high water level when a sewage drainage system according to one embodiment of the present invention is operating normally. FIG. 7 (a) shows the inside of a storage tank, and FIG. 7 (b) is a drawing showing a part of a screen appearing on a display of a control unit.
FIG. 8 is a drawing showing an operating state at a high water level when a low water level sensing floater of a sewage drainage system according to one embodiment of the present invention is broken. FIG. 8 (a) shows the inside of a storage tank, and FIG. 8 (b) is a drawing showing a part of a screen appearing on a display of a control unit.
FIG. 9 is a drawing showing an operating state at a high water level when a low water level sensing floater and a medium water level sensing floater of a sewage drainage system according to one embodiment of the present invention are broken. FIG. 9 (a) shows the inside of a storage tank, and FIG. 9 (b) is a drawing showing a part of a screen appearing on a display of a control unit.
FIG. 10 is a drawing showing an operating state at a medium water level when a low water level sensing floater of a sewage drainage system according to one embodiment of the present invention is broken. FIG. 10 (a) shows the inside of a storage tank, and FIG. 10 (b) is a drawing showing a part of a screen appearing on a display of a control unit.

The following embodiments are combinations of the components and features of the embodiments in a given form. Each component or feature may be considered optional unless otherwise explicitly stated. Each component or feature may be implemented in a form that is not combined with other components or features. In addition, some components and/or features may be combined to form various embodiments. The order of operations described in various embodiments may be changed. Some components or features of one embodiment may be included in another embodiment, or may be replaced with corresponding components or features of another embodiment.

In the description of the drawings, procedures or steps that may obscure the gist of the various embodiments are not described, and procedures or steps that can be understood by a person with ordinary skill in the art are also not described.

Throughout the specification, when a part is said to "comprising" or "including" a component, this does not mean that other components are excluded, but rather that other components can be included, unless otherwise stated. Furthermore, terms such as "part," "unit," "module," etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware, software, or a combination of hardware and software. Furthermore, terms such as "a" or "an," "one," "the," and similar related words may be used in the context of describing various embodiments (especially in the context of the claims below) to include both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context.

Hereinafter, embodiments according to various embodiments will be described in detail with reference to the attached drawings. The detailed description set forth below together with the attached drawings is intended to explain exemplary embodiments of various embodiments and is not intended to represent the only embodiment.

In addition, specific terms used in various embodiments are provided to help understanding of various embodiments, and the use of such specific terms may be changed in other forms without departing from the technical spirit of various embodiments.

FIG. 1 is a schematic diagram for explaining a sewage drainage system according to one embodiment of the present invention, FIG. 2 is a cross-sectional diagram for explaining a pump unit according to one embodiment of the present invention, FIG. 3 is a block diagram for explaining a sewage drainage system according to one embodiment of the present invention, FIG. 4 is a flowchart for explaining a method for controlling a sewage drainage system according to one embodiment of the present invention, FIG. 5 is a diagram showing an operating state at a low water level when a sewage drainage system according to one embodiment of the present invention is operating normally, in which FIG. 5 (a) shows the inside of a storage tank, and FIG. 5 (b) is a diagram showing a part of a screen appearing on a display of a control unit, and FIG. 6 is a diagram showing an operating state at a medium water level when a sewage drainage system according to one embodiment of the present invention is operating normally, in which FIG. 6 (a) shows the inside of a storage tank, and FIG. 6 (b) is a diagram showing a part of a screen appearing on a display of a control unit, and FIG. 7 is a diagram showing an operating state at a high water level when a sewage drainage system according to one embodiment of the present invention is operating normally, and FIG. 7 (a) shows the inside of a storage tank, and (b) of FIG. 7 is a drawing showing a part of a screen displayed on a display of a control unit, and FIG. 8 is a drawing showing an operating state at a high water level when a low water level sensing floater of a sewage drainage system according to an embodiment of the present invention is broken, and (a) of FIG. 8 is a drawing showing the inside of a storage tank, and (b) of FIG. 8 is a drawing showing a part of a screen displayed on a display of a control unit, and FIG. 9 is a drawing showing an operating state at a high water level when a low water level sensing floater and a medium water level sensing floater of a sewage drainage system according to an embodiment of the present invention are broken, and (a) of FIG. 9 is a drawing showing the inside of a storage tank, and (b) of FIG. 9 is a drawing showing a part of a screen displayed on a display of a control unit, and FIG. 10 is a drawing showing an operating state at a medium water level when a low water level sensing floater of a sewage drainage system according to an embodiment of the present invention is broken, and (a) of FIG. 10 is a drawing showing the inside of a storage tank, and (b) of FIG. 10 is a drawing showing an operating state at a high ... A drawing showing a portion of the screen that appears on the display.

Referring to FIGS. 1 to 3, a sewage drainage system (1) according to an embodiment operates a pump in such a manner that the discharge flow rate is linked to the inflow or accumulated amount of sewage, thereby preventing overflow, and can resolve the phenomenon of the pump running idle or being clogged by foreign substances in real time. In addition, when a plurality of pumps are arranged, sewage can be efficiently discharged according to the amount of sewage through various operation modes. In addition, by evenly distributing the operating time of a plurality of pumps, the service life of the sewage drainage system (1) can be extended by preventing excessive operation of a specific pump. In addition, even if a problem occurs in a sensor measuring a water level, it is possible to determine how much sewage is accumulated through an abnormal case of the sensor and to operate the pump appropriately, thereby preventing overflow. For example, the sewage drainage system (1) may include a chamber unit (11), a pump unit (12), a drain unit (13), and a control unit (14).

The chamber (11) may include a storage tank (111), a wastewater inflow pipe (112), and a water level sensor module (113).

The storage tank (111) is a space where wastewater is stored. The storage tank (111) can be manufactured from environmentally friendly PP material, and can be formed as a sturdy structure with the upper and lower plates having a thickness of 10 mm or more and the side walls having a thickness of 5.0 to 6.0 mm or more, and can be buried underground. Alternatively, it can be placed in an exposed state above ground, and can be formed as a sealed structure that does not leak odor.

The sewage inlet pipe (112) delivers sewage to the storage tank (111) and can be connected to the top of the storage tank (111). The sewage inlet pipe (112) is of the DRF type (O-ring union type) and is easy to attach and detach, and can be connected to a PVC or STS pipe that is being constructed, and can be constructed so as not to cause leakage.

The water level sensor module (113) may include a low water level sensing floater (1131), a medium water level sensing floater (1132), a high water level sensing floater (1133), and a water level sensor connector (1134). The low water level sensing floater (1131) can measure the low water level of sewage in the storage tank (111) by determining whether or not it is floating and the degree of floating. The medium water level sensing floater (1132) is arranged above the low water level sensing floater (1131), and can measure the medium water level of sewage in the storage tank (111) by determining whether or not it is floating and the degree of floating. The high water level sensing floater (1133) is arranged above the medium water level sensing floater (1132), and can measure the high water level of sewage in the storage tank (111) by determining whether or not it is floating and the degree of floating. The water level sensor connect (1134) can connect a low water level sensing floater (1131), a medium water level sensing floater (1132), and a high water level sensing floater (1133).

The pump unit (12) is arranged inside the chamber unit (11) and can grind foreign substances contained in the wastewater stored in the chamber unit (11) and discharge the wastewater and foreign substances at the same time. Meanwhile, the pump unit (12) may be composed of a single pump, but may also be composed of two first pumps (12a) and a second pump (12b), and may also be composed of three or more pumps, although not shown in the drawing. A plurality of pumps may be operated in a simultaneous operation mode, an alternate operation mode, or a simultaneous stop mode. For example, the pump unit (12) may include a base (121), a cutter (122), an impeller (123), a sealing member (124), a housing (125), a motor assembly (126), a rotor assembly (127), an inlet (128), and a discharge port (129).

The base (121) may be arranged on one side of the storage tank (111) and may have an opening formed to allow wastewater to flow. For example, the base (121) may be arranged on the bottom surface of the storage tank (111), and wastewater and foreign substances may move together into the interior of the base (121) through the opening.

The cutter (122) can crush foreign substances contained in sewage by rotating quickly.

The impeller (123) can cause a fluid motion so that the wastewater moves to the cutter (122). The impeller (123) can be formed with a blade structure so that foreign substances are not caught during operation, and the blade portion of the impeller (123) can be designed to minimize the flow resistance of the fluid, such as, for example, the HELIX II VANE IMPELLER.

The motor assembly (126) can rotate the cutter (122) and the impeller (123). The rotor assembly (127) is connected to the cutter (122) and the impeller (123) and can transmit the rotational motion of the motor assembly (126). For example, the motor assembly (126) can be protected by a 'motor smart protection device' built into the sewage drainage system (1). The 'motor smart protection device' is linked to the main controller (141) of the control unit (14) to protect the pump unit (12) from phase loss (i.e., correct the phase imbalance of multiple pumps), prevent idling of the pump unit (12), prevent overload or overcurrent, or resolve the phenomenon of foreign matter jamming in the pump unit (12).

The inlet (128) is an opening through which wastewater flows from the base (121) into the interior of the pump unit (12). The discharge port (129) can discharge wastewater containing ground foreign substances.

The drainage section (13) is connected to the pump section (12) and serves as a path for draining wastewater and foreign substances from the pump section (12). The drainage section (13) may include a first discharge pipe (131a) connected to the first pump (12a), a first valve (132a) controlling the opening and closing of the first discharge pipe (131a), a second discharge pipe (131b) connected to the second pump (12b), a second valve (132b) controlling the opening and closing of the second discharge pipe (131b), and a collective discharge pipe (133) in which the first discharge pipe (131a) and the second discharge pipe (131b) join.

The control unit (14) may include a main controller (141), a pump control module (142) that controls the operation of the pump unit (12), an operation mode control module (143) that mutually converts the operation of the pump unit (12) into a manual or automatic operation mode, a current sensor (144) that measures current flowing in the pump unit (12), a chamber sensor (145), a temperature and humidity sensor (146) that measures the temperature and humidity around the sewage drainage system (1), and a display (147) that indicates the current status and operation status of the pump unit (12) and the chamber unit (11).

The temperature and humidity sensor (146) measures the temperature and humidity around the control unit (14), and displays the results through the display (147), thereby allowing the user to recognize conditions in which the environment has excessive influence on the operation of the sewage drainage system (1).

The chamber sensor (145) can be linked to several sensors placed within the chamber, particularly the water level sensor module (113), to graphically display the water level on the display.

The driving mode control module (143) can control manual and automatic modes, as well as turn on and off multiple pumps individually. In addition, the alternating driving mode can be subdivided to switch between a constant alternating driving mode and an accumulated driving time alternating mode. Here, the 'accumulated driving time alternating mode' means, as described later, alternating driving so that the total operating time of multiple pumps is the same.

The display (147) can display whether the driving status is running, stopped, or faulty on the LCD so that the driving status can be easily identified. In addition, the fault history can be stored in the memory so that the history can be identified through the display (147). The display (1147) can quickly notify the abnormal driving status not only with the LCD that can be identified with the naked eye but also with a warning sound or alarm. As described below, the display (147) can transmit to the screen that overload driving is in progress when overcurrent is detected by the main controller (141), and can transmit to the screen that idling driving is in progress when low current is detected, thereby allowing the operator to take quick action. In addition, it can also transmit to the screen when overvoltage, low voltage, or phase failure is detected by the main controller (141).

The main controller (141) can compare the current measured by the current sensor (144) with the rated current of the pump unit (12). If the current measured by the current sensor (144) is greater than the rated current, it is determined that a clogging phenomenon due to a foreign substance has occurred in the pump unit (12), and the pump control module (142) can cause the pump unit (12) to alternately repeat reverse and forward rotation operations. For example, when the pump unit (12) is operating, if a foreign substance binds the impeller (123), the current increases higher than the rated current, and the main controller (141) can detect this and control the pump control module (142) to continue the reverse rotation operation for about 5 seconds between forward rotation operations. For example, if a foreign substance binds the impeller (123), if it does not operate normally after repeating the sequence of reverse rotation (5 seconds), forward rotation, reverse rotation (5 seconds), forward rotation, reverse rotation (5 seconds), and forward rotation, the pump unit (12) may be stopped. This alternating forward and reverse rotation operation may be called a 'protection device processor', and if the current flowing in the pump unit (12) does not decrease to the rated current despite the protection device processor, the operation of the pump unit (12) is stopped. When the current measurement value increases by 150% or more of the rated current, the 'protection device processor' may be activated. That is, it is possible to prevent overvoltage or undervoltage from occurring in the pump unit (12) by the main controller (141), and this voltage state or current state may be displayed through the display (147).

Meanwhile, the main controller (141) determines that idling has occurred in the pump unit (12) when the current measured by the current sensor (144) is less than the rated current and the water level of the wastewater detected by the water level sensor module (113) is a low water level or a low water level, and can cause the pump unit (12) to be stopped by the pump control module (142). At this time, the pump unit (12) can be stopped 20 seconds after idling is detected, can be restarted after stopping for 15 minutes, and can be stopped again if idling is detected during restarting. Here, the 'low water level' means a state in which there is no wastewater at all in the storage tank (111), including a water level not detected by the low water level sensing floater (1131), and 'idling' means that the pump unit (12) is operated in a state in which there is no wastewater.

In addition, the main controller (141) can detect the number of times the first pump (12a) and the second pump (12b) have been operated and the operating time, respectively, and compare the total operating time of the first pump (12a) with the total operating time of the second pump (12b). The operating times of the plurality of pumps may differ significantly in the total operating time due to the alternate operating mode, various other mechanical failures, manual operation, etc. In this case, if only a specific pump is excessively operated, the life of the entire system may be negatively affected and the pumping efficiency may decrease, so a mechanism for compensating for this may be operated. For example, the main controller (141) can control the pump control module (142) so that, if the total operating time of the first pump (12a) and the total operating time of the second pump (12b) are compared and the total operating time of a certain pump is longer, the pump with the shorter total operating time is operated before the pump with the longer total operating time in the alternate operating mode.

Referring to FIGS. 4 to 10, the main controller (141) can determine whether there is a problem with the water level sensor module (113). For example, if a floater that detects a relatively low water level does not detect the water level and a floater that detects a higher water level sends a signal that the water level is detected, the main controller (141) determines that there is a problem with the water level sensor module (113). For example, (i) when the low water level is not detected by the low water level sensing plotter (1131), the medium water level is detected by the medium water level sensing plotter (1132), and the high water level is detected by the high water level sensing plotter (1133), the pump control module (142) is controlled to operate the first pump (12a) and the second pump (12b) in a simultaneous operation mode, and the display (147) can display a high water level alarm and a low water level sensing plotter abnormality (S05 of FIG. 4 and (a) and (b) of FIG. 8). In addition, (ii) when the low water level is not detected by the low water level sensing plotter (1131), the medium water level is not detected by the medium water level sensing plotter (1132), and the high water level is detected by the high water level sensing plotter (133), the pump control module is controlled to operate the first pump (12a) and the second pump (12b) in a simultaneous operation mode, and the display (147) can display a high water level alarm and an abnormality of the low water level sensing plotter and the medium water level sensing plotter (S06 of FIG. 4 and (a) and (b) of FIG. 9). In addition, (iii) when the low water level is not detected by the low water level sensing plotter (1131), the medium water level is detected by the medium water level sensing plotter (1132), and the high water level is not detected by the high water level sensing plotter (1133), the pump control module (142) is controlled to operate the first pump (12a) and the second pump (12b) in an alternate operation mode, and the display (147) can display a medium water level alarm and a low water level sensing plotter abnormality (S07 of FIG. 4 and (a) and (b) of FIG. 10). Meanwhile, in this case, since it cannot be ruled out that there is also a problem with the high water level sensing floater (1133), a water pressure sensor may be placed on the upper side of the storage tank (111) (at a position equal to or higher than the high water level sensing floater (1133)), and if a water level higher than the medium water level is detected by the water pressure sensor, it can be determined that there is also a problem with the high water level sensing floater (1133). That is, when the low water level is not detected by the low water level sensing floater (1131), the medium water level is detected by the medium water level sensing floater (1132), the high water level is not detected by the high water level sensing floater (1133), and the high water level is detected by the water pressure sensor, the control unit (14) controls the pump control module (142) to operate the first pump (12a) and the second pump (12b) in a simultaneous operation mode, and the display (147) can display a high water level alarm, a low water level sensing floater, and an abnormality of the high water level sensing floater.

The main controller (141), if there is no problem with the water level sensor module (113), can determine whether the water level is high and operate the first pump (12a) and the second pump (12b) simultaneously (S01 in FIG. 4), if it is not a high water level, can determine whether it is a medium water level and operate the first pump (12a) and the second pump (12b) alternately (S02 in FIG. 4), and if it is not a medium water level, can determine whether it is a low water level and operate the first pump (12a) and the second pump (12b) alternately or stop them both (S03 in FIG. 4). In addition, if it is not a low water level, can determine whether it is a low water level and stop both the first pump (12a) and the second pump (12b) (S04 in FIG. 4).

The effects that can be obtained from the examples are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly derived and understood by a person having ordinary skill in the art based on the detailed description below.

The various embodiments described above may be embodied in other specific forms without departing from the technical idea and essential characteristics thereof. Therefore, the detailed description above should not be construed as limiting in all aspects but should be considered as illustrative. The scope of the various embodiments should be determined by a reasonable interpretation of the appended claims, and all changes within the equivalent scope of the various embodiments are included in the scope of the various embodiments. In addition, claims that do not have an explicit citation relationship in the patent claims may be combined to form an embodiment or included as a new claim by post-application amendment.

1: Sewage drainage system
11: Chamber
111: Reservoir
112: Sewage inlet pipe
113: Water level sensor module
1131: Low water level sensing plotter
1132: Medium level sensing plotter
1133: High-level sensing plotter
12: Pump section
12a: Pump 1
12b: 2nd pump
121: Base
122: Cutter
123: Impeller
124: Absence of ceiling
125: Housing
126: Motor Assembly
127: Rotor Assembly
128: Inlet
129: exhaust port
13: Drainage
131a: First discharge pipe
131b: 2nd discharge pipe
132a: Valve 1
132b: 2nd valve
133: Collective discharge pipe
14: Control Unit
141: Main Controller
142: Pump Control Module
143: Driving Mode Control Module
144: Current sensor
145: Chamber sensor
146: Temperature and Humidity Sensor
147: Display

Claims (1)

A chamber section including a storage tank in which wastewater flowing in from a wastewater inlet pipe is stored until it is discharged;
A pump unit disposed inside the chamber and grinding foreign substances contained in the wastewater stored in the chamber while simultaneously discharging the wastewater and the foreign substances; and
A control unit for controlling the water level of the wastewater in the above storage tank
Including,
The control unit includes a current sensor for measuring current flowing in the pump unit; a pump control module for controlling the operation of the pump unit; and a main controller for comparing the current measured by the current sensor with the rated current of the pump unit.
The above main controller determines that a clogging phenomenon due to the foreign substance has occurred in the pump unit when the current measured by the current sensor is greater than the rated current, and controls the pump unit to alternately repeat reverse and forward rotation operations through the pump control module, with the reverse rotation operation continuing for 5 seconds between forward rotation operations.
The chamber section further includes a water level sensor module including a low water level sensing floater for sensing the low water level of the wastewater in the storage tank, a medium water level sensing floater for sensing the medium water level, and a high water level sensing floater for sensing the high water level.
The main controller determines that the pump unit is running idle when the current measured by the current sensor is less than the rated current and the water level of the sewage detected by the water level sensor module is low or low water level, and stops the pump unit by the pump control module.
The above pump section is composed of a plurality of pumps, a first pump and a second pump,
The above first pump and the above second pump are operated in a simultaneous operation mode, an alternate operation mode or a simultaneous stop mode,
The above main controller,
The number of times of operation and the operating time of the first pump and the second pump are respectively detected, and the operating time includes the reverse rotation operation time and the forward rotation operation time, and the total operating time of the first pump and the total operating time of the second pump are compared, and the pump control module is controlled so that a pump with a shorter total operating time is operated before a pump with a longer total operating time in the alternating operation mode, thereby evenly operating the plurality of pumps so that the total operating times of the plurality of pumps are equal to each other.
The above control unit further includes a display that indicates the current status and operating status of the pump unit and the chamber unit,
(i) When the low water level is not detected by the low water level sensing plotter, the medium water level is detected by the medium water level sensing plotter, and the high water level is detected by the high water level sensing plotter, the pump control module is controlled to operate the first pump and the second pump in a simultaneous operation mode, and the display indicates a high water level alarm and a low water level sensing plotter abnormality.
(ii) When the low water level is not detected by the low water level sensing plotter, the medium water level is not detected by the medium water level sensing plotter, and the high water level is detected by the high water level sensing plotter, the pump control module is controlled to operate the first pump and the second pump in a simultaneous operation mode, and the display indicates a high water level alarm and an abnormality of the low water level sensing plotter and the medium water level sensing plotter.
(iii) If the low water level is not detected by the low water level sensing plotter, the medium water level is detected by the medium water level sensing plotter, and the high water level is not detected by the high water level sensing plotter, the pump control module is controlled to operate the first pump and the second pump in an alternate operation mode, and the display indicates a medium water level alarm and a low water level sensing plotter abnormality.
(iv) When a water pressure sensor is placed at a position equal to or higher than the high water level sensing floater on the upper side of the reservoir, and a low water level is not detected by the low water level sensing floater, a medium water level is detected by the medium water level sensing floater, a high water level is not detected by the high water level sensing floater, and a high water level is detected by the water pressure sensor, the pump control module is controlled to operate the first pump and the second pump in a simultaneous operation mode, and the display displays a high water level alarm, a low water level sensing floater, and an abnormality of the high water level sensing floater.
The above main controller,
(i) When the low water level is not detected by the low water level sensing plotter, the medium water level is detected by the medium water level sensing plotter, and the high water level is detected by the high water level sensing plotter, the pump control module is controlled to operate the first pump and the second pump in the simultaneous operation mode.
(ii) If the low water level is not detected by the low water level sensing plotter, the medium water level is not detected by the medium water level sensing plotter, and the high water level is detected by the high water level sensing plotter, the pump control module is controlled to operate the first pump and the second pump in the simultaneous operation mode.
(iii) A sewage drainage system having a pump unit with a built-in blockage prevention function, characterized in that when the low water level is not detected by the low water level sensing floater, the medium water level is detected by the medium water level sensing floater, and the high water level is not detected by the high water level sensing floater, the pump control module is controlled to operate the first pump and the second pump in the alternate operation mode.