Wastewater detection assembly and cleaning device

Abstract

This disclosure relates to a wastewater detection assembly and a cleaning device. The wastewater detection assembly includes at least one light-emitting device and at least two light-receiving devices. The light-emitting device(s) and the two light-receiving devices are arranged around a wastewater drain pipe. The two light-receiving devices include a direct light-receiving device and a reflected light-receiving device. The light-emitting device(s) are arranged opposite the direct light-receiving device. The light-emitting device(s) and the reflected light-receiving device are arranged on the same side of the wastewater drain pipe. Fig. 1

Description

Title of the invention: WASTEWATER DETECTION ASSEMBLY AND CLEANING APPARATUS Technical field

[0001] The invention relates to a wastewater detection assembly and a cleaning device. Previous art

[0002] During operation, a cleaning device produces a certain amount of wastewater. The cleaning device can adjust its cleaning control strategies based on the turbidity of the wastewater. Therefore, the wastewater detection accuracy has a significant impact on the control accuracy of the cleaning device. Description of the invention

[0003] In view of the above problem in the prior art, one object of the present disclosure is to provide at least one light-emitting device and at least two light-receiving devices, including a direct light-receiving device and a reflected light-receiving device for detecting wastewater.

[0004] In order to solve the above problem, the present invention proposes a wastewater detection assembly. The wastewater detection assembly comprises at least one light-emitting device and at least two light-receiving devices where;

[0005] The light-emitting device(s) and the two light-receiving devices are arranged around a wastewater drain pipe;

[0006] The at least two light receiving devices comprise a direct light receiving device and a reflected light receiving device;

[0007] The light-emitting device(s) are arranged opposite the direct light-receiving device, and the light-emitting device(s) and the reflected light-receiving device are arranged on the same side of the wastewater drain pipe.

[0008] Preferably, the light-emitting device(s) are arranged opposite the direct light-receiving device with respect to a central axis line of the wastewater discharge pipe.

[0009] Preferably, the light-emitting device(s) and the reflected light-receiving device are arranged on the same edge of the wastewater drain pipe.

[0010] Preferably, the wastewater drain pipe is a circular pipe, and the distance between the light-emitting device(s) and the direct light-receiving device is less than or equal to the diameter of the wastewater drain pipe.

[0011] Preferably, a line connecting the light-emitting device(s) and the reflected light receiving device is parallel to a central axis line of the wastewater discharge pipe.

[0012] Preferably, one of the light-emitting devices and the reflected light-receiving device is disposed inside the wastewater drain pipe, and the other light-emitting device and the reflected light-receiving device is disposed outside the wastewater drain pipe.

[0013] Preferably, the wastewater drain pipe is equipped with a first mounting element, a second mounting element and a third mounting element, the first mounting element is arranged opposite the second mounting element, and the first mounting element and the third mounting element are located on the same side of the wastewater drain pipe;

[0014] The light-emitting device(s) are detachably connected to the wastewater drain pipe via the first mounting element, the direct light-receiving device is detachably connected to the wastewater drain pipe via the second mounting element, and the reflected light-receiving device is detachably connected to the wastewater drain pipe via the third mounting element.

[0015] Preferably, the first mounting element, the second mounting element and the third mounting element are all mounting grooves.

[0016] Preferably, the light-emitting device(s) and the at least two light-receiving devices are formed integrally with a mounting ring.

[0017] The mounting ring is inserted onto the wastewater drain pipe.

[0018] In another aspect, the present disclosure further provides a cleaning device. The device includes the wastewater detection assembly described above.

[0019] With the above technical solutions, the wastewater detection system of the invention has the following beneficial effects.

[0020] By positioning the light-emitting device(s) opposite the direct light-receiving device, the direct light-receiving device directly receives the light emitted by the light-emitting device(s) to detect the chromatic turbidity of the wastewater. More precisely, the chromatic turbidity of the wastewater represents the color depth of the wastewater. With the light-emitting device(s) and the reflected light-receiving device on the same side, the light emitted by the light-emitting device(s) can only be received by the reflected light-receiving device after being reflected. More precisely, the light beam can be received by the reflected light-receiving device after being reflected by the wall of the wastewater pipe, or it can be received by the reflected light-receiving device after being reflected by solids in the wastewater. In other words, the reflected light-receiving device can detect the nephelometric turbidity of the wastewater, and the nephelometric turbidity of the wastewater represents the solid-to-liquid ratio of the wastewater.The cleaning device can be controlled based on the chromatic turbidity of the wastewater and the nephelometric turbidity of the wastewater, thus improving the flexibility of its control. Detecting wastewater in terms of chromatic and nephelometric turbidity improves the accuracy of wastewater turbidity detection, thereby enhancing the control accuracy of the cleaning device. Brief description of the drawings

[0021] For a clearer illustration of the technical solutions in this disclosure, the drawings to be used in the description of the embodiments or prior art are briefly introduced below. The drawings in the following description are simply some embodiments of this disclosure, and a person skilled in the art can imagine other figures based on these figures without exercising inventive effort.

[0022] [Fig.1] is a structural diagram of a wastewater detection assembly according to an embodiment of the present disclosure;

[0023] [Fig.2] is a top view of a wastewater detection assembly according to a method of implementing this disclosure; and

[0024] [Fig.3] is a top view of a wastewater detection assembly according to a another method of implementing this disclosure.

[0025] In the drawings, 1 represents a light-emitting device, 2 represents a wastewater drain pipe, 3 represents a direct light-receiving device, and 4 represents a reflected light-receiving device.

[0026] Examples of embodiments of the invention

[0027] The technical solutions in the embodiments of this disclosure will be clearly and fully described below with reference to the drawings of the embodiments of this disclosure. It is evident that the embodiments described are only some, but not all, of the embodiments of the invention. Based on the embodiments of this disclosure, all other embodiments achieved by those with ordinary skills in the art without creative effort must fall within the scope of protection of the invention.

[0028] The reference herein to "an embodiment" or "a mode of embodiment" refers to a particular feature, structure, or characteristic that may be included in at least one implementation of this disclosure. In the description of this disclosure, it shall be understood that the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "top," and "bottom" are those shown on the basis of the accompanying drawings and are intended merely to facilitate and simplify the description of this disclosure rather than to indicate or imply that the indicated device or element must have a specific orientation and be structured and operated according to that specific orientation, and shall not be construed as limiting the invention.Furthermore, the terms "first" and "second" are used here for descriptive purposes only and should not be interpreted as indicating or implying relative importance or implicitly indicating the number of technical features described. Thus, the features defined by "first" and "second" may explicitly or implicitly include one or more of the features. Moreover, the terms "first," "second," and similar terms are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the invention described herein may be implemented in an order other than those illustrated or described herein.

[0029] With reference to [Fig. 1], a wastewater detection assembly according to an embodiment of the invention is described. The assembly comprises at least one light-emitting device 1 and at least two light-receiving devices. The light-emitting device(s) 1 and the two light-receiving devices are arranged around a wastewater drain pipe 2. The two light-receiving devices comprise a direct light-receiving device 3 and a reflected light-receiving device 4. The light-emitting device(s) 1 are arranged opposite the direct light-receiving device 3. The light-emitting device(s) 1 and the reflected light-receiving device 4 are arranged on the same side of the wastewater drain pipe 2.

[0030] In one embodiment of this disclosure, the light-emitting device(s) 1 are configured to emit a detection light beam. More specifically, the detection light beam may be a light beam with any output wavelength, or may be a beam of composite light with a plurality of output wavelength bands. For example, the detection light beam may be one or more of the following: infrared light, blue light, green light, and ultraviolet light, where infrared and ultraviolet light are invisible, and blue and green light are visible. In another embodiment of this disclosure, the detection light beam may be a laser beam.

[0031] In one embodiment of this disclosure, the light-emitting device(s) 1 may be a light-emitting diode (LED), and the two receiving devices may be at least one type of photodiode and phototriode.

[0032] In one embodiment of the invention, the two light-receiving devices are configured to receive the detection light beam emitted by the light-emitting device(s) 1. The direct light-receiving device 3 is configured to directly receive the detection light beam emitted by the light-emitting device(s) 1; that is, the detection light beam emitted by the light-emitting device(s) 1 is received by the direct light-receiving device 3 after passing through the wastewater and / or air. The color depth of the wastewater can absorb the detection light beam.The reflected light receiving device 4 is configured to receive the reflected detection light beam, i.e. the detection light beam emitted by the light emitting device(s) 1 is received by the reflected light receiving device 4 after being reflected by the wastewater drain pipe 2 and / or the solid matter in the wastewater.

[0033] In one embodiment of this disclosure, the wastewater drain pipe 2 refers to a conduit for the flow of wastewater, which may be a circular pipe or a square pipe; and may be a fully transparent pipe, or a partially transparent pipe allowing the transmission of the detection light beam, or a translucent pipe allowing the transmission of the detection light beam.

[0034] With reference to [Fig. 2] and [Fig. 3], in one embodiment of the invention, it is assumed that a direction of movement of a cleaning device is defined as a front-to-back direction, a center of the wastewater discharge pipe 2 is defined as a central point, a forward direction is defined as a positive y-axis, a straight direction is defined as a positive x-axis, and that the x-axis is a 0-degree axis. The light-emitting device(s) 1 are arranged opposite the direct light-receiving device 3, which indicates that an included angle between the light-emitting device(s) 1 and the direct light-receiving device 3 is 180 degrees. For example, assuming that the light-emitting device(s) 1 are arranged at a position on an axis at 90 degrees, the receiving device direct light 3 is disposed at a position on an axis at 270 degrees; assuming that the light emitting device(s) 1 are disposed at a position on an axis at 30 degrees, the direct light receiving device 3 is disposed at a position on an axis at 210 degrees.

[0035] In one embodiment of this disclosure, it is assumed that the direction of movement of the cleaning device is defined as the front-to-back direction, the center of the wastewater discharge pipe 2 is defined as the central point, the forward direction is defined as the positive y-axis, the straight direction is defined as the positive x-axis, and the x-axis is the 0-degree axis. The light-emitting device(s) 1 and the reflected light-receiving device 4 are arranged on the same side, indicating that an included angle between the light-emitting device(s) 1 and the reflected light-receiving device 4 is less than or equal to 90 degrees.For example, assuming that the light-emitting device(s) 1 are arranged at the axis position at 90 degrees, the reflected light-receiving device 4 is arranged between the axis at 0 degrees and an axis at 180 degrees; assuming that the light-emitting device(s) 1 are arranged at the axis position at 30 degrees, the reflected light-receiving device 4 is arranged between an axis at 300 degrees and an axis at 120 degrees.

[0036] In the embodiments of the above disclosure, by placing the light-emitting device(s) 1 opposite the direct light-receiving device 3, the direct light-receiving device 3 directly receives the light emitted by the light-emitting device(s) 1 to detect the chromatic turbidity of the wastewater. More specifically, the chromatic turbidity of the wastewater represents the color depth of the wastewater. By placing the light-emitting device(s) 1 and the reflected light-receiving device 4 on the same side, the light emitted by the light-emitting device(s) 1 can be received by the reflected light-receiving device 4 only after it has been reflected.More specifically, the light beam can be received by the reflected light receiving device 4 after being reflected by the wall of the wastewater discharge pipe 2, or it can be received by the reflected light receiving device 4 after being reflected by solids in the wastewater. That is, the reflected light receiving device 4 can detect the nephelometric turbidity of the wastewater, and the nephelometric turbidity of the wastewater represents the solid-to-liquid ratio of the wastewater. The cleaning device can be controlled in terms of both the chromatic and nephelometric turbidity of the wastewater, thereby improving the control flexibility of the cleaning device. Detecting wastewater in terms of both chromatic and nephelometric turbidity improves detection accuracy. of the turbidity of wastewater, thus improving the control accuracy of the cleaning device.

[0037] In one embodiment of this disclosure, the type of wastewater can be determined based on the chromatic turbidity of the wastewater and the nephelometric turbidity of the wastewater. For example, a "milk" type of wastewater indicates that the chromatic turbidity of the wastewater is low but the nephelometric turbidity of the wastewater is high, and a "cola" type of wastewater indicates that both the chromatic turbidity and the nephelometric turbidity of the wastewater are low.

[0038] In one embodiment of this disclosure, a plurality of light-emitting devices 1 and a plurality of direct light-receiving devices 3 corresponding respectively to the plurality of light-emitting devices 1 may be provided. The number of reflected light-receiving devices 4 is defined according to specific requirements such as manufacturing costs and detection accuracy.

[0039] In one embodiment of this disclosure, alternatively, a light-emitting device 1 and a direct light-receiving device 3 corresponding to the light-emitting device 1 may be provided.

[0040] In one embodiment of this disclosure, alternatively, a light-emitting device 1 and a plurality of direct light-receiving devices 3 corresponding to the light-emitting device 1 may be provided.

[0041] In one embodiment of this disclosure, alternatively, a plurality of light-emitting devices 1 and a direct light-receiving device 3 corresponding to the plurality of light-emitting devices 1 may be provided.

[0042] In one embodiment of this disclosure, the light-emitting device(s) 1 are arranged opposite the direct light-receiving device 3 with respect to a central axis line of the wastewater discharge pipe 2.

[0043] In one embodiment of the present disclosure, by arranging the light-emitting device 1 opposite the direct light-receiving device 3 with respect to the central axis line of the wastewater flow pipe 2, it is ensured that the detection light beam can be received by the direct light-receiving device 3 after being transmitted through the wastewater flow pipe 2 to the greatest extent, thereby improving the detection accuracy of the chromatic turbidity of the wastewater by the wastewater detection assembly.

[0044] In one embodiment of this disclosure, the light-emitting device(s) 1 and the reflected light-receiving device 4 are arranged on the same edge of the wastewater drain pipe 2.

[0045] In one embodiment of this disclosure, it is assumed that the direction of movement of the cleaning device is defined as the front-to-back direction, the center of the wastewater drain pipe 2 is defined as the central point, the forward direction is defined as the positive y-axis, the straight direction is defined as the positive x-axis, and the x-axis is the 0-degree axis. The light-emitting device(s) 1 and the reflected light-receiving device(s) 4 are arranged on the same edge of the wastewater drain pipe 2, which indicates that the light-emitting device(s) 1 and the reflected light-receiving device(s) 4 are located on the same axis.For example, assuming that the light-emitting device(s) 1 are arranged at the axis position at 90 degrees, the reflected light-receiving device 4 is also arranged at the axis position at 90 degrees; assuming that the light-emitting device(s) 1 are arranged at the axis position at 30 degrees, the reflected light-receiving device 4 is also arranged at the axis position at 30 degrees.

[0046] In one embodiment of this disclosure, by arranging the light-emitting device(s) 1 and the reflected light-receiving device 4 on the same edge of the wastewater flow pipe 2, the accuracy of the reflected light that can be received by the reflected light-receiving device 4 is improved, thereby improving the detection accuracy of the nephelometric turbidity of the wastewater by the wastewater detection assembly.

[0047] In one embodiment of this disclosure, the wastewater drain pipe 2 is a circular pipe, and a distance between the light-emitting device(s) 1 and the direct light-receiving device 3 is less than or equal to a pipe diameter of the wastewater drain pipe 2.

[0048] In one embodiment of this disclosure, where the distance between the light-emitting device(s) 1 and the direct light-receiving device 3 is less than the pipe diameter of the wastewater drain pipe 2, at least one of the light-emitting device(s) 1 and the direct light-receiving device 3 is disposed inside the wastewater drain pipe 2, and the other is disposed on the wall of the wastewater drain pipe 2. More specifically, where the light-emitting device(s) 1 are disposed inside the wastewater drain pipe 2, the direct light-receiving device 3 may be disposed on the wall of the wastewater drain pipe 2, or the direct light-receiving device 3 may alternatively be disposed inside the wastewater drain pipe 2.When the direct light receiving device 3 is arranged inside the wastewater drain pipe 2, the light emitting device(s) 1 may alternatively be arranged on the wall of the wastewater drain pipe 2.

[0049] In one embodiment of the present disclosure, by providing the wastewater drain pipe 2 as a circular pipe, the distance between the light-emitting device(s) 1 and the direct light-receiving device 3 is less than or equal to the pipe diameter of the wastewater drain pipe 2, which can further improve the accuracy of detecting the chromatic turbidity of the wastewater, and improve the mounting flexibility between the light-emitting device(s) 1 and the direct light-receiving device 3, thus improving the arrangement flexibility of the wastewater detection assembly in the cleaning device.

[0050] In one embodiment of this disclosure, a line connecting the light-emitting device(s) 1 and the reflected light-receiving device 4 is parallel to the centerline of the wastewater drain pipe 2.

[0051] In one embodiment of this disclosure, a line connecting the light-emitting device(s) 1 and the reflected light-receiving device 4 is parallel to the centerline of the wastewater drain pipe 2, indicating that the light-emitting device(s) 1 and the reflected light-receiving device 4 are located either inside the wastewater drain pipe 2 or outside the wastewater drain pipe 2.

[0052] In one embodiment of this disclosure, by arranging the light-emitting device(s) 1 and the reflected light-receiving device 4 either inside the wastewater drain pipe 2 or outside the wastewater drain pipe 2, the arrangement flexibility of the wastewater detection assembly in the cleaning apparatus can be improved while ensuring the detection accuracy of the nephelometric turbidity of the wastewater.

[0053] In one embodiment of this disclosure, one of the light-emitting devices 1 and the reflected light-receiving device 4 is disposed inside the wastewater drain pipe 2, and the other light-emitting device 1 and the reflected light-receiving device 4 is disposed outside the wastewater drain pipe 2.

[0054] In one embodiment of this disclosure, by arranging one of the light-emitting devices 1 and the reflected light-receiving device 4 inside the wastewater drain pipe 2 and arranging the other light-emitting device 1 and the reflected light-receiving device 4 outside the wastewater drain pipe 2, the arrangement flexibility of the wastewater sensing assembly in the cleaning apparatus can be improved while ensuring the detection accuracy of the nephelometric turbidity of the wastewater.

[0055] In one embodiment of this disclosure, the wastewater drain pipe 2 is equipped with a first mounting element, a second element of mounting and a third mounting element, the first mounting element is arranged opposite the second mounting element, and the first mounting element and the third mounting element are located on the same side of the wastewater drain pipe 2. The light emitting device(s) 1 are detachably connected to the wastewater drain pipe 2 via the first mounting element, the direct light receiving device 3 is detachably connected to the wastewater drain pipe 2 via the second mounting element, and the reflected light receiving device 4 is detachably connected to the wastewater drain pipe 2 via the third mounting element.

[0056] In one embodiment of the present disclosure, by detachably connecting the light-emitting device(s) 1 to the wastewater drain pipe 2 via the first mounting element, by detachably connecting the direct light-receiving device 3 to the wastewater drain pipe 2 via the second mounting element, and by detachably connecting the reflected light-receiving device 4 to the wastewater drain pipe 2, the ease of mounting the light-emitting device(s) 1, the direct light-receiving device 3 and the reflected light-receiving device 4 is improved, and the replacement of the light-emitting device(s) 1, the direct light-receiving device 3 and the reflected light-receiving device 4 is facilitated, thereby improving the ease of maintenance of the cleaning device.

[0057] In one embodiment of this disclosure, the first mounting element, the second mounting element and the third mounting element are all mounting grooves.

[0058] In one embodiment of this disclosure, the first mounting element, the second mounting element and the third mounting element are all provided in the form of mounting grooves, thereby improving the mounting stability of the light-emitting device(s) 1, the direct light-receiving device 3 and the reflected light-receiving device 4, and improving the sewage detection reliability of the cleaning device.

[0059] In one embodiment of this disclosure, the light-emitting device(s) 1 and the at least two light-receiving devices are formed integrally with a mounting ring; the mounting ring is threaded onto the wastewater drain pipe 2.

[0060] In one embodiment of this disclosure, by fully integrating the light-emitting device(s) 1 and the at least two light-receiving devices with the mounting ring, the wastewater detection assembly can be detached from the wastewater drain pipe 2 via the mounting ring, thus improving the ease of assembly of the wastewater detection system, and improving the ease of maintenance of the cleaning device.

[0061] The operating principles of the wastewater detection assembly of this disclosure are described below.

[0062] When wastewater is present in the wastewater drain pipe 2, the light-emitting device(s) 1 emit a detection light beam. This detection light beam penetrates the wastewater and is received by the direct light-receiving device 3, generating a chromatic turbidity detection result for the wastewater. The detection light beam is received by the reflected light-receiving device 4 after being reflected by solids in the wastewater or the wall of the wastewater drain pipe 2, generating a nephelometric turbidity detection result for the wastewater. A controller for the cleaning device enters different operating modes depending on the chromatic turbidity detection result and the nephelometric turbidity detection result for the wastewater.

[0063] The wastewater detection system according to the embodiments of the above disclosure has the following beneficial effects.

[0064] By positioning the light-emitting device(s) 1 opposite the direct light-receiving device 3, the direct light-receiving device 3 directly receives the light emitted by the light-emitting device(s) 1 to detect the chromatic turbidity of the wastewater. More precisely, the chromatic turbidity of the wastewater represents the color depth of the wastewater. By positioning the light-emitting device(s) 1 and the reflected light-receiving device 4 on the same side, the light emitted by the light-emitting device(s) 1 can be received by the reflected light-receiving device 4 only after it has been reflected.More specifically, the light beam can be received by the reflected light receiving device 4 after being reflected by the wall of the wastewater discharge pipe 2, or it can be received by the reflected light receiving device 4 after being reflected by solids in the wastewater. That is, the reflected light receiving device 4 can detect the nephelometric turbidity of the wastewater, and the nephelometric turbidity of the wastewater represents the solid-to-liquid ratio of the wastewater. The cleaning device can be controlled based on the chromatic turbidity of the wastewater and the nephelometric turbidity of the wastewater, thus improving the control flexibility of the cleaning device.Detecting wastewater in terms of chromatic turbidity and nephelometric turbidity improves the accuracy of wastewater turbidity detection, thereby improving the control accuracy of the cleaning equipment.

[0065] One embodiment of this disclosure further provides a cleaning device. The cleaning device includes the wastewater detection assembly according to the embodiment of this disclosure. The beneficial effects of the cleaning device are consistent with those of the wastewater detection assembly, which will not be described in detail here.

[0066] In one embodiment of this disclosure, the cleaning device may be a broom or a floor scrubber.

[0067] The above description has fully disclosed the specific embodiments of this disclosure. It should be noted that any modifications made by experts in the field to the specific embodiments of this disclosure do not depart from the scope of the claims of this disclosure. Accordingly, the scope of the claims of this disclosure is not limited to the aforementioned specific embodiments.

Claims

Demands

1. Wastewater detection assembly, comprising: at least one light-emitting device (1) and at least two light-receiving devices, characterized in that - the light-emitting device (1) and the two light-receiving devices are arranged around a wastewater drain pipe (2); - the two light-receiving devices comprise a direct light-receiving device (3) and a reflected light-receiving device (4); - the light-emitting device (1) is arranged opposite the direct light-receiving device (3), and the light-emitting device (1) and the reflected light-receiving device (4) are arranged on the same side of the wastewater drain pipe (2).

2. Wastewater detection assembly according to claim 1, characterized in that an included angle between the light-emitting device (1) and the reflected light-receiving device (4) is less than or equal to 90 degrees.

3. Wastewater detection assembly according to claim 1, characterized in that the light emitting device (1) is arranged opposite the direct light receiving device (3) with respect to a central axis line of the wastewater flow pipe (2).

4. Wastewater detection assembly according to claim 3, characterized in that an included angle between the light-emitting device (1) and the direct light-receiving device (3) is 180 degrees.

5. Wastewater detection assembly according to claim 1, characterized in that the light emitting device (1) and the reflected light receiving device (4) are arranged on the same edge of the wastewater flow pipe (2).

6. Wastewater detection assembly according to claim 5, characterized in that the light-emitting device (1) and the reflected light-receiving device (4) are located on the same QVO

7. dAC. Wastewater detection assembly according to claim 6, characterized in that a line connecting the light-emitting device (1) and the reflected light receiving device (4) is parallel to a central axis line of the wastewater discharge pipe (2).

8. Wastewater detection assembly according to claim 1, characterized in that the wastewater drain pipe (2) is a circular pipe, and a distance between the light emitting device (1) and the direct light receiving device (3) is equal to a pipe diameter of the wastewater drain pipe (2).

9. Wastewater detection assembly according to claim 1, characterized in that one of the light-emitting devices (1) and the reflected light-receiving device (4) is disposed inside the wastewater drain pipe (2), and the other of the light-emitting devices (1) and the reflected light-receiving device (4) is disposed outside the wastewater drain pipe (2).

10. Wastewater detection assembly according to claim 1, characterized in that the wastewater drain pipe (2) is equipped with a first mounting element, a second mounting element and a third mounting element, the first mounting element is disposed opposite the second mounting element, and the first mounting element and the third mounting element are located on the same side of the wastewater drain pipe (2).

11. Wastewater detection assembly according to claim 10, characterized in that the light emitting device (1) is detachably connected to the wastewater drain pipe (2) via the first mounting element, the direct light receiving device (3) is detachably connected to the wastewater drain pipe (2) via the second mounting element, and the reflected light receiving device (4) is detachably connected to the wastewater drain pipe (2) via the third mounting element.

12. Wastewater detection assembly according to claim 11, characterized in that the first mounting element, the second mounting element and the third mounting element are all mounting grooves.

13. Wastewater detection assembly according to claim 1, characterized in that the light-emitting device (1) and the two light-receiving devices are formed integrally with 15 a mounting ring; the mounting ring is inserted onto the wastewater drain pipe (2).

14. Cleaning apparatus, comprising the wastewater detection assembly according to any one of claims 1 to 13.

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