Pollution discharge device and mobile nursing robot

Abstract

The utility model relates to the technical field of intelligent nursing equipment, and provides a blowdown device which is used for a mobile nursing robot and comprises a dirt box and a mesh enclosure. A containing cavity for containing dirt is formed in the dirt box, a dirt inlet communicated with the containing cavity is formed in the dirt box, the net cover is arranged in the containing cavity and used for collecting the dirt, and the net cover is provided with an opening facing the dirt inlet. Wherein the dirt enters the accommodating cavity after being filtered by the mesh enclosure. Thus, large-size dirt is prevented from entering the containing cavity through filtering of the net cover, the dirt box is not prone to being blocked during dirt discharging, a user does not need to manually dredge the dirt box, the operation difficulty during use is reduced, the dirt discharging efficiency of the dirt box is improved, the working performance of the dirt box is optimized, and the service life of the dirt box is prolonged. And good experience is brought to the use of the user.

Description

Technical Field

[0001] This utility model relates to the field of intelligent nursing equipment technology, and in particular to a sewage discharge device and a mobile nursing robot. Background Technology

[0002] Indoor toilets that handle human waste are mostly fixed toilets. After the user finishes excreting, the waste is discharged directly through the floor drain. However, these toilets can only be fixed in the bathroom and are not suitable for portable care devices. Portable care devices, due to size limitations, have limited space for the waste discharge device, which can easily lead to blockages and odor overflows during waste discharge, resulting in poor waste discharge and a bad user experience. Utility Model Content

[0003] In view of this, the present invention provides a sewage discharge device and a mobile nursing robot to solve the technical problems of easy clogging and low sewage discharge efficiency of the sewage discharge device during the sewage discharge process.

[0004] To solve the above problems, the technical solution of this utility model is implemented as follows:

[0005] A waste disposal device for a mobile nursing robot includes: a waste bin with an internal cavity for holding waste, the waste bin having an inlet communicating with the cavity; and a mesh screen disposed in the cavity for collecting the waste, the mesh screen having an opening facing the inlet; the waste enters the cavity after being filtered by the mesh screen; wherein the inner surface of the waste bin and the mesh screen are spaced at a predetermined distance in the vertical direction.

[0006] In some embodiments, the waste bin includes an upper shell and a lower shell, which together form the receiving cavity. The waste inlet is located on the upper shell, and the preset distance is formed between the inner surface of the upper shell and the mesh cover, and the preset distance is ≥5mm.

[0007] In some embodiments, a retaining ring is fixedly connected to one end of the mesh cover facing the upper shell, and the retaining ring forms an entrance for the dirt to enter the mesh cover; wherein, the retaining ring has a plurality of vent holes, and the vent holes are spaced apart; the preset distance is formed between the retaining ring and the inner surface of the upper shell.

[0008] In some embodiments, the sewage discharge device further includes: a sewage pump disposed in the receiving cavity and vertically mounted below the mesh cover; and a sewage pipe, one end connected to the sewage pump and the other end extending out of the receiving cavity. The sewage pump is at least used to pump out the sewage filtered by the mesh cover.

[0009] In some embodiments, the sewage discharge device further includes: a rotating rod rotatably disposed within the mesh cover to at least agitate the sewage located within the mesh cover; a drive shaft connected at one end to the rotating rod and at the other end to the sewage pump to drive the rotating rod to rotate; wherein the sewage pump drives the rotating rod to rotate alternately in the forward and reverse directions to agitate the sewage.

[0010] In some embodiments, the sewage discharge device also includes a shock-absorbing sleeve, which is fitted onto the sewage pump.

[0011] In some embodiments, the sewage discharge device further includes: a crusher, disposed on the inner wall of the mesh cover, for the sewage to collide during stirring; wherein, multiple crushers are provided, and each crusher is evenly distributed on the inner wall of the mesh cover.

[0012] In some embodiments, the sewage discharge device further includes: an exhaust port, which is formed on the sewage tank and communicates with the receiving cavity; an exhaust pipe, one end of which is connected to the exhaust port to discharge gas from the receiving cavity; and a filter box, which is connected to the other end of the exhaust pipe for filtering the gas discharged from the receiving cavity.

[0013] This utility model embodiment also provides a mobile nursing robot, including: a main body; a toilet bowl disposed in the main body; and a sewage discharge device as described in any one of the above, wherein the sewage discharge device is installed in the main body and communicates with the toilet bowl; wherein the toilet bowl inputs the sewage into the sewage tank through the sewage inlet.

[0014] In some embodiments, the mobile nursing robot further includes an electric valve disposed between the toilet bowl and the sewage discharge device, and connected to the toilet bowl and / or the waste bin, the electric valve reciprocatingly controlling the opening or closing of the sewage inlet.

[0015] This utility model provides a sewage discharge device, including a sewage bin and a mesh cover. The sewage bin has an internal cavity for collecting sewage, and an inlet communicating with the cavity. The mesh cover is disposed within the cavity and collects the sewage. The mesh cover has an opening facing the inlet, through which sewage enters and is filtered before entering the cavity. The inner surface of the sewage bin and the mesh cover are vertically spaced by a predetermined distance. This filtration by the mesh cover prevents large-sized sewage from entering the cavity, reducing the likelihood of blockage during sewage discharge and eliminating the need for manual unclogging. Furthermore, the gap between the mesh cover and the inner surface of the sewage bin allows air to circulate between the mesh cover and the cavity, ensuring efficient filtration, improving sewage treatment efficiency, optimizing the sewage bin's performance, and providing a better user experience. Attached Figure Description

[0016] Figure 1 A cross-sectional structural schematic diagram of the sewage discharge device provided in the embodiment of this utility model;

[0017] Figure 2 This is a schematic diagram of the assembly structure of the sewage discharge device provided in an embodiment of the present utility model;

[0018] Figure 3 A cross-sectional structural diagram of the mesh cover and sewage pump provided for embodiments of this utility model;

[0019] Figure 4 A schematic diagram of the overall structure of the mesh cover provided in this embodiment of the utility model;

[0020] Figure 5 A cross-sectional structural diagram of the sewage discharge device and toilet provided in the embodiments of this utility model;

[0021] Figure 6 This is a schematic diagram of the assembly structure of the electric valve provided in an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Sewage discharge device; 2. Toilet bowl; 3. Electric valve; 10. Waste bin; 11. Mesh cover; 12. Sewage pump; 13. Sewage pipe; 14. Rotating rod; 15. Drive shaft; 16. Shock absorber sleeve; 17. Crusher; 18. Vent hole; 19. Vent pipe; 20. Filter box; 100. Receiving cavity; 101. Sewage inlet; 102. Upper shell; 103. Lower shell; 110. Retaining ring; 111. Inlet; 1101. Vent hole; 1030. Mounting cavity. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this utility model will not be described separately.

[0026] In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.

[0027] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0028] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a sewage discharge device 1 for a mobile nursing robot. The sewage discharge device 1 includes a sewage bin 10 and a mesh cover 11. The sewage bin 10 has a receiving cavity 100 for receiving sewage, and the sewage bin 10 has a sewage inlet 101 communicating with the receiving cavity 100. The mesh cover 11 is disposed in the receiving cavity 100 and is used to collect sewage. The mesh cover 11 has an opening facing the sewage inlet 101, so that sewage enters into the mesh cover 11 through the opening, and enters the receiving cavity 100 after being filtered by the mesh cover 11.

[0029] Understandably, mobile care robots are typically used to assist people with mobility impairments in defecating. After the user finishes defecating, the waste enters the waste bin 10 in the waste disposal device 1. Once the waste bin 10 is full, the mobile care robot will move to the bathroom to discharge the waste. In order to facilitate indoor use, the size of the mobile care robot is usually small, which limits the size of the waste disposal device 1 and makes it easy to get clogged during the waste disposal process. At this time, a mesh cover 11 is set in the waste disposal device 1 to filter the waste.

[0030] Specifically, such as Figure 3 As shown, the inner surface of the waste bin 10 and the mesh cover 11 are vertically spaced by a predetermined distance H. That is, the waste bin 10 has an inlet 101 for waste to pass through, which communicates with the internal cavity 100 of the waste bin 10. The mesh cover 11 is located in the cavity 100 and corresponds to the position of the inlet 101. The vertical spacing between the mesh cover 10 and the inner surface of the waste bin 10 allows for air circulation between the mesh cover 10 and the cavity 100. If too much waste enters the mesh cover 11, the filter holes on the mesh cover 10 may become clogged. In this case, the mesh cover 11 maintains pressure balance with the cavity 100 through the spacing. After passing through the inlet 101, the waste collects inside the mesh cover 11 through the opening and is quickly filtered by the mesh cover 11 before entering the cavity 100. This limits the size of the waste entering the cavity 100 and prevents blockage during waste discharge. This utility model provides a sewage discharge device, including a sewage bin and a mesh cover. The sewage bin has an internal cavity for collecting sewage, and an inlet communicating with the cavity. The mesh cover is disposed within the cavity and is used to collect sewage. The mesh cover has an opening facing the inlet, through which sewage enters the mesh cover, allowing it to be filtered before entering the cavity. The inner surface of the sewage bin and the mesh cover are vertically spaced by a predetermined distance. In this way, the filtration of the mesh cover prevents large-sized waste from entering the containment cavity without the need for additional waste treatment devices. This reduces the likelihood of blockage during waste discharge, eliminating the need for manual unclogging and simplifying operation. Furthermore, the gap between the mesh cover and the inner surface of the waste box allows for airflow between the mesh cover and the containment cavity, ensuring smooth passage of waste and maximizing filtration speed. This improves the waste box's discharge efficiency and optimizes its performance while maintaining the same overall size, resulting in a superior user experience.

[0031] In some embodiments, such as Figure 2 and Figure 3As shown, the waste bin 10 includes an upper shell 102 and a lower shell 103, which together form a receiving cavity 100. A waste inlet 101 is located on the upper shell 102. A predetermined distance H is formed between the inner surface of the upper shell 103 and the mesh cover 11, and this predetermined distance H is ≥ 5 mm. In other words, the receiving cavity 100 in the waste bin 10 is formed by the upper shell 102 and the lower shell 103, and the mesh cover 11 is disposed within the receiving cavity 100, opposite to the waste inlet 101 on the upper shell 102. In the vertical direction, the end of the mesh cover 11 near the waste inlet 101 maintains a predetermined distance H with the inner surface of the upper shell 102, and this predetermined distance H is not less than 5 mm.

[0032] Understandably, during the filtration process of dirt through the mesh cover 11, excessive dirt can clog the filter holes in the mesh cover 11. In this case, if the mesh cover 11 is in direct contact with the inner surface of the upper shell 102, the inside of the mesh cover 11 will be sealed, preventing airflow between it and the receiving cavity 100. Dirt will then be difficult to filter and continue entering the receiving cavity 100. Therefore, a preset distance H needs to be maintained between the mesh cover 11 and the inner surface of the upper shell 102. When dirt is filtered inside the mesh cover 11, the air inside the mesh cover 11 and the air inside the receiving cavity 100 are kept in circulation through this gap, allowing dirt to pass smoothly through the mesh cover 11 and ensuring the filtration speed of the mesh cover 11. Simultaneously, the preset distance H should be ≥ 5mm to prevent it from being too small, ensuring effective airflow between the inside of the mesh cover 11 and the receiving cavity 100 and preventing the pressure balancing function from failing.

[0033] In this embodiment of the invention, a preset distance is set between the inner surface of the mesh cover and the upper shell. When the dirt is filtered, the air inside the mesh cover and the receiving cavity can remain in circulation, so that the dirt can pass through the mesh cover smoothly, ensuring the filtration speed of the mesh cover and improving the sewage discharge efficiency of the sewage discharge device.

[0034] In some embodiments, such as Figure 2 and Figure 4 As shown, a retaining ring 110 is fixedly connected to one end of the mesh cover 11 facing the upper shell 102. The retaining ring 110 forms an inlet 111 for dirt to enter the mesh cover 11. The retaining ring 110 has multiple vent holes 1101, spaced apart, with a preset distance H between the retaining ring 110 and the inner surface of the upper shell 102. Understandably, the retaining ring 110 is provided along the edge of the opening of the mesh cover 11, with an inlet 111 reserved in the middle for dirt to enter. To prevent the retaining ring 110 from affecting the airflow between the inside of the mesh cover 11 and the receiving cavity 100, multiple spaced vent holes 1101 can be provided on the retaining ring 110 to allow air circulation. When dirt blocks the opening of the mesh cover 11, dirt or sewage can still enter the mesh cover 11 through the vent holes 1101 for further processing, thus not affecting the continued use of the product.

[0035] This utility model embodiment, by setting a baffle ring on the mesh cover and opening ventilation holes on the baffle ring, can not only ensure air circulation, but also filter dirt as it passes through the baffle ring, thus optimizing the filtration function of the mesh cover, further improving the filtration speed of the mesh cover, and thereby improving the sewage discharge efficiency of the sewage discharge device.

[0036] In some embodiments, such as Figure 1 As shown, the sewage discharge device 1 also includes a sewage pump 12 and a sewage pipe 13. The sewage pump 12 is disposed in the receiving cavity 100 and is vertically mounted below the mesh cover 11. One end of the sewage pipe 13 is connected to the sewage pump 12, and the other end extends out of the receiving cavity 100. The sewage pump 12 is used at least to pump out the sewage filtered by the mesh cover 11. Understandably, the sewage pump 12 is disposed at the bottom of the receiving cavity 100. A mounting cavity 1030 is provided on the lower shell 103. The sewage pump 12 is installed in the mounting cavity 1030 inside the receiving cavity 100 and is located below the mesh cover 11. One end of the sewage pipe 13 is connected to the sewage pump 12, and the other end extends out of the sewage tank 10. After being filtered by the mesh cover 11, the waste accumulates at the bottom of the receiving cavity 100 under the action of gravity. At this time, the sewage pump 12 located at the bottom of the receiving cavity 100 is started, sucking the waste into the sewage pipe 13 and discharging it out of the receiving cavity 100, which can quickly clean up the waste.

[0037] This embodiment of the utility model places the sewage pump at the bottom of the receiving cavity, which meets the sewage discharge needs of the sewage discharge device without occupying the external space of the sewage tank, optimizes the internal structure of the sewage discharge device, improves the space utilization of the sewage discharge device, and at the same time, the sewage pump placed at the bottom of the receiving cavity can quickly and thoroughly drain the sewage, improve the working efficiency of the sewage discharge device, and give users a good user experience.

[0038] In some embodiments, such as Figure 1 and Figure 2 As shown, the sewage discharge device 1 also includes a rotating rod 14 and a drive shaft 15. The rotating rod 14 is rotatably disposed inside the mesh cover 11 to at least agitate the sewage located inside the mesh cover 11. One end of the drive shaft 15 is connected to the rotating rod 14, and the other end is connected to the sewage pump 12 to drive the rotating rod 14 to rotate. The sewage pump 12 drives the rotating rod 14 to rotate alternately in the forward and reverse directions to agitate the sewage.

[0039] Understandably, a rotatable rotating rod 14 is installed inside the mesh cover 11. The sewage pump 12 is connected to the rotating rod 14 via a drive shaft 15, driving the rotating rod 14 to rotate inside the mesh cover 11. Simultaneously, driven by the sewage pump 12, the rotating rod 14 alternately rotates clockwise and counterclockwise inside the mesh cover 11. The rotation of the rotating rod 14 thoroughly agitates the waste, breaking it down to a size that can pass through the filter holes on the mesh cover 11, facilitating subsequent sewage discharge. Furthermore, because the mesh cover 11 is equipped with a retaining ring 110, it prevents waste from flying out of the mesh cover 11 during the agitation process of the rotating rod 14, ensuring that the waste is thoroughly broken down inside the mesh cover 11. It should also be noted that clockwise rotation can be either clockwise or counterclockwise, while counterclockwise rotation is in the opposite direction to clockwise rotation.

[0040] In this embodiment of the invention, a rotating rod is installed inside the mesh cover. The sewage pump drives the rotating rod to rotate and crush the sewage. Only after the sewage is crushed will it pass through the mesh cover and enter the receiving cavity to process the sewage entering the sewage tank, making the sewage easier to discharge. This further avoids the sewage from being too large and causing blockage in the sewage pipe, improves the sewage discharge efficiency of the sewage discharge device, and optimizes the working performance of the sewage discharge device.

[0041] In some embodiments, such as Figure 2 and Figure 3 As shown, the sewage discharge device 1 also includes a shock-absorbing sleeve 16, which is fitted onto the sewage pump 12. Understandably, the shock-absorbing sleeve 16 is fitted onto the outer side of the sewage pump 12, and the sewage pump 12 and the shock-absorbing sleeve 16 are together disposed in the mounting cavity 1030 (see reference). Figure 1 In the process of the sewage pump 12 working, the shock-absorbing sleeve 16 buffers the vibration of the sewage pump 12, reduces the vibration amplitude of the sewage pump 12, avoids excessive vibration amplitude of the sewage pump 12 affecting the normal operation of the sewage discharge device 1, and controls the noise emitted by the sewage pump 12 during operation.

[0042] This utility model embodiment reduces the vibration amplitude of the sewage pump by installing a shock-absorbing sleeve on the outer casing of the sewage pump, preventing excessive vibration from affecting the normal operation of the sewage pump, reducing collisions between components inside the sewage device, protecting parts, extending the service life of the product, and reducing the noise of the sewage pump during operation, thus providing users with a better user experience.

[0043] In some embodiments, such as Figure 1 and Figure 4As shown, the sewage discharge device 1 also includes a crusher 17, which is disposed on the inner wall of the mesh cover 11 for collision of sewage during agitation. Multiple crushers 17 are provided, evenly distributed on the inner wall of the mesh cover 11. Understandably, when the rotating rod 14 agitates inside the mesh cover 11, it drives the sewage to rotate around the inner wall of the mesh cover 11. Since the inner wall of the mesh cover 11 is provided with crushers 17, as the sewage rotates along the inner wall of the mesh cover 11, it collides with the crushers 17, assisting the rotating rod 14 in crushing the sewage and increasing the crushing speed of the sewage within the mesh cover 11.

[0044] In this embodiment of the invention, a crushing body is provided on the inner wall of the mesh cover, and an auxiliary rotating rod is used to crush the dirt in the mesh cover, thereby improving the processing speed of the crushing device for dirt and ensuring that the dirt can be fully crushed in the mesh cover, thus improving the sewage discharge efficiency of the sewage discharge device.

[0045] In some embodiments, such as Figure 2 As shown, the sewage discharge device 1 also includes an exhaust port 18, an exhaust pipe 19, and a filter box 20. The exhaust port 18 is located in the sewage bin 10 (see reference). Figure 1 The exhaust pipe 19 is connected to the vent hole 18 at one end to discharge the gas in the vent cavity 100. The filter box 20 is connected to the other end of the exhaust pipe 19 to filter the gas discharged from the vent cavity 100.

[0046] Understandably, the upper shell 102 is provided with an exhaust port 18, and one end of the exhaust pipe 19 is connected to the exhaust port 18 to discharge the gas in the receiving cavity 100, thereby maintaining the air pressure balance inside the waste bin 10 and enabling the sewage discharge device 1 to smoothly perform sewage discharge work. At the same time, a filter box 20 can also be installed at the end of the exhaust pipe 19 that is connected to the outside atmosphere. The gas inside the waste bin 10 can only enter the outside atmosphere after being filtered by the filter box 20, thus treating the gas in the receiving cavity before discharge to prevent odor leakage.

[0047] This utility model embodiment features an exhaust vent on the upper shell, with an exhaust pipe connected to the vent. Gas in the waste bin is discharged along the exhaust pipe, maintaining stable internal air pressure in the waste bin to ensure rapid waste discharge. Simultaneously, a filter box is installed at one end of the exhaust pipe to filter the gas in the containment cavity before discharge, preventing odors from entering the room, improving product performance, and providing users with a good user experience.

[0048] like Figure 5As shown, this embodiment of the utility model also provides a mobile care robot, including a main body, a toilet bowl 2, and a waste disposal device 1. The toilet bowl 2 is disposed in the main body, and the waste disposal device 1 is installed in the main body and communicates with the toilet bowl 2; wherein, the toilet bowl 2 inputs waste into the waste bin 1 via the waste inlet 101. Specifically, the main body can be the main shell component of the mobile care robot, and its interior has installation space for the installation of the waste disposal device 1 and other necessary components. Furthermore, rollers can be provided on the main body to enable the overall movement of the mobile care robot. It is understood that the mobile care robot is typically used to assist the elderly and people with limited mobility in defecation. After the user defecates in the toilet bowl 2, the excrement and toilet paper are flushed with clean water from the toilet bowl into the receiving cavity 100. When the receiving cavity 100 is full of waste, the mobile care robot automatically moves to the toilet to discharge and clean the excrement in the receiving cavity 100.

[0049] Specifically, such as Figure 1 and Figure 2 As shown, after the sewage passes through the inlet 101, the mesh cover 11 collects the waste in the sewage. The mesh cover 11 is equipped with a crushing device 14, which crushes the waste in the mesh cover 11 until the waste is small enough to pass through the filter holes on the mesh cover 11. The crushed waste enters the receiving cavity 100 through the mesh cover 11. When the sewage tank 1 is full, it can be discharged from the sewage tank through the sewage discharge pipe. At this time, the crushed waste particles are small and are not easy to block the sewage discharge pipe during the sewage discharge process, which improves the sewage discharge efficiency of the sewage tank 1.

[0050] This utility model embodiment improves the sewage discharge device of the mobile nursing robot, enabling the sewage to be filtered and fully crushed in the mesh cover, reducing the size of the sewage and making it less prone to clogging during the discharge of sewage into the sewage bin. On the one hand, it improves the sewage discharge efficiency of the sewage discharge device, and on the other hand, it avoids the need for users to manually unclog the sewage pipes, optimizes the performance of the product, reduces the difficulty of daily maintenance, brings convenience to users, and improves the user experience.

[0051] In some embodiments, such as Figure 5 and Figure 6 As shown, the mobile nursing robot also includes an electric valve 3, which is located between the toilet bowl 2 and the sewage discharge device 1, and connected to the toilet bowl 2 and / or the waste bin 1. The electric valve 3 reciprocates to control the opening and closing of the sewage inlet 101. Understandably, an electric valve 3 is also provided between the toilet bowl 2 and the sewage discharge device 1, which controls whether the toilet bowl 2 and the sewage discharge device 1 are connected. When the user is defecating, the electric valve 3 opens, and waste can flow out of the sewage inlet 101 (see...). Figure 2After the user finishes defecating, the toilet bowl 2 is flushed with clean water, washing away the toilet paper and residual waste into the sewage discharge device 1. Then, the electric valve 3 is closed, and the waste is crushed and discharged in the sewage discharge device 1. At this time, the electric valve 3 isolates the sewage discharge device 1 from the outside world, preventing odor leakage and preventing waste from splashing out of the sewage discharge device 1 when it is processing waste.

[0052] This utility model embodiment installs an electric valve between the sewage discharge device and the toilet bowl. When the electric valve is closed, it can isolate the sewage discharge device from the external space, preventing odors from leaking out of the sewage discharge device and preventing sewage from splashing out during the crushing process. This further optimizes the performance of the product and brings a good user experience.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sewage discharge device for a mobile nursing robot, characterized in that, The sewage discharge device includes: A waste bin has an internal cavity for holding waste, and an inlet on the waste bin that communicates with the cavity. A mesh screen, disposed in the receiving cavity and used to collect the waste, the mesh screen having an opening facing the waste inlet; the waste enters the receiving cavity after being filtered by the mesh screen; The inner surface of the waste bin and the mesh cover are spaced at a predetermined distance in the vertical direction.

2. The sewage discharge device according to claim 1, characterized in that, The waste bin includes an upper shell and a lower shell, which together form the receiving cavity. The waste inlet is located on the upper shell. The preset distance is formed between the inner surface of the upper shell and the mesh cover, and the preset distance is ≥5mm.

3. The sewage discharge device according to claim 2, characterized in that, A retaining ring is fixedly connected to one end of the mesh cover facing the upper shell, and the retaining ring forms an entrance for the dirt to enter the mesh cover. The retaining ring has multiple vent holes, which are spaced apart; the preset distance is formed between the retaining ring and the inner surface of the upper shell.

4. The sewage discharge device according to claim 1, characterized in that, The sewage discharge device also includes: A sewage pump is disposed in the receiving cavity and is installed vertically below the mesh cover; A sewage pipe, one end of which is connected to the sewage pump, and the other end of which extends out of the receiving cavity; The sewage pump is used at least to pump out the sewage that has been filtered by the mesh screen.

5. The sewage discharge device according to claim 4, characterized in that, The sewage discharge device also includes: A rotating rod is rotatably disposed within the mesh cover to at least agitate the dirt located within the mesh cover; A drive shaft is connected at one end to the rotating rod and at the other end to the sewage pump to drive the rotating rod to rotate. The sewage pump drives the rotating rod to rotate alternately in the forward and reverse directions to agitate the sewage.

6. The sewage discharge device according to claim 4, characterized in that, The sewage discharge device also includes a shock-absorbing sleeve, which is fitted onto the sewage pump.

7. The sewage discharge device according to claim 1, characterized in that, The sewage discharge device also includes: The crushing material is arranged on the inner wall of the mesh cover to allow the contaminants to collide during stirring; The mesh cover contains multiple fragments, each of which is evenly distributed on the inner wall of the mesh cover.

8. The sewage discharge device according to any one of claims 1 to 7, characterized in that, The sewage discharge device also includes: An exhaust port is provided on the waste bin and communicates with the receiving cavity; An exhaust pipe, one end of which is connected to the exhaust port, is used to discharge gas from the receiving cavity; A filter box, connected to the other end of the exhaust pipe, is used to filter the gas discharged from the receiving cavity.

9. A mobile nursing robot, characterized in that, include: ontology; A toilet bowl is installed in the main body; The sewage discharge device according to any one of claims 1-8 is installed in the body and communicates with the toilet bowl; The toilet bowl feeds waste into the waste bin via the waste inlet.

10. The mobile nursing robot according to claim 9, characterized in that, The mobile nursing robot also includes: An electric valve is installed between the toilet bowl and the sewage discharge device, and is connected to the toilet bowl and / or the waste tank. The electric valve reciprocates to control the opening or closing of the sewage inlet.

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