Sewage tank and mobile nursing robot

Abstract

The utility model relates to the technical field of intelligent nursing equipment, and provides a sewage tank which is used for a mobile nursing robot and comprises an upper shell, a lower shell, a mesh enclosure and a crushing device. The upper shell is provided with a dirt inlet, the lower shell and the upper shell define a containing cavity, the containing cavity is at least used for containing dirt, the net cover is located in the containing cavity and used for collecting the dirt, and at least part of the crushing device is arranged in the net cover to crush the dirt. Thus, the dirt is collected in the mesh enclosure after passing through the dirt inlet, the crushing device is arranged in the mesh enclosure, and the dirt can penetrate through the mesh enclosure to enter the containing cavity after being crushed by the crushing device. According to the sewage tank, dirt entering the sewage tank is treated, so that the dirt is discharged more easily, blockage caused by too large dirt is avoided, the sewage discharging efficiency of the sewage tank is improved, meanwhile, the manual cleaning frequency is reduced, the product performance is optimized, and good use experience is brought to a user.

Description

Technical Field

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

[0002] Intelligent care devices are typically used to assist users with defecation, primarily providing care for the elderly, disabled, and other individuals with limited self-care abilities. For example, a care robot can move to a target location, collect the user's excrement, and then transport it to a designated location such as a toilet for disposal, eliminating the need for the user to use the toilet. However, these devices have specific requirements regarding the volume of waste in the wastewater. For instance, the toilet paper used must be water-soluble or specialized; high-strength toilet paper does not dissolve quickly in water, which can easily cause blockages during the disposal process. Users may even need to manually unclog the pipes, affecting disposal efficiency, limiting the usability of the intelligent care devices, and causing inconvenience for users. Utility Model Content

[0003] In view of this, the present invention provides a sewage tank and a mobile nursing robot to solve the technical problem that sewage tanks are prone to clogging during discharge.

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

[0005] A wastewater tank for a mobile nursing robot includes: an upper shell with a wastewater inlet; a lower shell that surrounds the upper shell to form a receiving cavity for at least containing waste; a mesh cover located in the receiving cavity and used to collect the waste, wherein at least one of the bottom wall or side wall of the mesh cover is provided with filter holes; and a crushing device, at least partially disposed in the mesh cover, for crushing the waste; wherein at least one of the bottom wall or side wall of the mesh cover is provided with crushing elements for collision and decomposition of the waste during agitation.

[0006] In some embodiments, the crushing device includes: a rotating rod rotatably disposed within the mesh cover to at least agitate the contaminants located within the mesh cover; a driving member connected to the rotating rod to drive the rotating rod to rotate; wherein a plurality of filter holes are provided on the bottom wall of the mesh cover.

[0007] In some embodiments, the breaking body is a baffle rib protruding from the inner sidewall of the mesh cover. The baffle rib includes a first impact surface and a second impact surface for the contaminant to collide with, and the first impact surface and the second impact surface are connected by a transition portion. The first impact surface and the second impact surface have different shapes so as to generate different impact forces.

[0008] In some embodiments, the first collision surface is an arc-shaped curved surface, and the second collision surface is a flat surface.

[0009] In some embodiments, the transition section is provided with a breaking structure for breaking down the dirt.

[0010] In some embodiments, the crushing structure is a plurality of protrusions with pointed tips, each of the protrusions being spaced apart along the height direction of the mesh cover; or the crushing structure is a crushing plate for impacting and decomposing the dirt, the crushing plate being extended along the height direction of the mesh cover.

[0011] 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 opening for the dirt to enter the mesh cover.

[0012] In some embodiments, the baffle ring has multiple through holes for sewage to enter the mesh cover, and the through holes are spaced apart.

[0013] In some embodiments, the lower shell is provided with a mounting cavity, the drive component is fixed in the mounting cavity, and the mesh cover is connected to the drive component.

[0014] This utility model embodiment also provides a mobile nursing robot, including a body and a sewage tank according to any one of the above, the sewage tank being installed in the body.

[0015] This utility model provides a wastewater tank for a mobile nursing robot. The wastewater tank includes an upper shell, a lower shell, a mesh cover, and a crushing device. The upper shell has a wastewater inlet, and the lower shell and upper shell together form a receiving cavity for holding at least waste. The mesh cover is located in the receiving cavity and is used to collect waste. At least one of the bottom wall or side wall of the mesh cover is provided with filter holes. The crushing device is at least partially disposed in the mesh cover to crush the waste. At least one of the bottom wall or side wall of the mesh cover is provided with crushing elements for collision and decomposition of the waste during agitation. Thus, wastewater is collected in the mesh cover after passing through the wastewater inlet. The crushing device inside the mesh cover crushes the wastewater before it passes through the mesh cover and enters the receiving cavity. Simultaneously, crushing elements are provided on the inner side wall of the mesh cover to assist the crushing device in crushing the wastewater in the mesh cover, improving the processing speed of the crushing device and ensuring that the wastewater is fully processed in the mesh cover, thereby improving the wastewater tank's discharge efficiency. This method treats the waste entering the sewage tank, making it easier to discharge and preventing blockages caused by large waste. This improves the sewage tank's discharge efficiency, reduces the frequency of manual cleaning, optimizes product performance, and provides users with a better experience. Attached Figure Description

[0016] Figure 1A cross-sectional structural diagram of the wastewater tank provided in an embodiment of this utility model;

[0017] Figure 2 A schematic diagram of the assembly structure of the sewage tank provided in an embodiment of this utility model;

[0018] Figure 3 A schematic diagram of the overall structure of the mesh cover provided in this embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the first type of crushing structure provided in an embodiment of the present utility model;

[0020] Figure 5 This is a schematic diagram of the second type of crushing structure provided in an embodiment of the present utility model;

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

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

[0023] 1. Wastewater tank; 11. Upper shell; 12. Lower shell; 13. Mesh cover; 14. Crushing device; 100. Receiving cavity; 120. Mounting cavity; 130. Opening; 131. Filter hole; 132. Crushing body; 133. Baffle rib; 134. Transition part; 135. Retaining ring; 1331. First collision surface; 1332. Second collision surface; 1341. Crushing device; 1351. Through hole; 141. Rotating rod; 142. Driving component. 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 This utility model provides a wastewater tank 1 for a mobile nursing robot. The wastewater tank 1 includes an upper shell 11, a lower shell 12, a mesh cover 13, and a crushing device 14. The upper shell 11 has a wastewater inlet 110. The lower shell 12 and the upper shell 11 enclose a receiving cavity 100, which is used to at least contain waste. The mesh cover 13 is located in the receiving cavity 100 and is used to collect waste. At least one of the bottom wall or side wall of the mesh cover 13 is provided with filter holes 131. The crushing device 14 is at least partially disposed in the mesh cover 13 to crush the waste.

[0029] Understandably, mobile care robots are typically used to assist the elderly and people with mobility issues with excretion. After the user finishes urinating, the robot washes the excrement and tissues with clean water into a wastewater tank 1. Once the wastewater tank 1 is full, the mobile care robot automatically moves to the toilet to drain and clean the wastewater tank 1. However, due to the limited size of the mobile robot, the diameter of the sewage pipe is usually small, and direct discharge can easily cause blockages in the sewage pipe. Figure 1 As shown, this utility model embodiment provides a sewage tank 1 that can prevent sewage pipe blockage.

[0030] Specifically, the upper shell 11 and lower shell 12 of the sewage tank 1 enclose a receiving cavity 100. The upper shell 11 has a sewage inlet 110. The mesh cover 13 is located inside the receiving cavity 100 and is set at the sewage inlet 110. The mesh cover 13 is equipped with a crushing device 14. After the sewage is collected at the mesh cover 13, the dirt in the sewage is processed by the crushing device 14, which crushes the dirt into sizes that can pass through the filter holes 131 on the mesh cover 13. At this time, the processed dirt can enter the receiving cavity 100. After the receiving cavity 100 is full, it is discharged. Small dirt is less likely to cause blockage during the sewage discharge process, avoiding the need for manual pipe clearing.

[0031] Furthermore, such as Figure 1 and Figure 3 As shown, at least one of the bottom wall or side wall of the mesh cover 13 is provided with crushing elements 132 for collision and decomposition of contaminants during agitation. It can be understood that when the crushing device 14 agitates inside the mesh cover 13 (see...), Figure 1 The crushing device 14 can cause the waste to rotate around the inner wall of the mesh cover 13. Crushing elements 132 are provided on the inner wall of the mesh cover 13. During the rotation of the waste along the inner wall of the mesh cover 13, the waste collides with the crushing elements 132, assisting the crushing device 14 in crushing the waste and increasing the crushing speed within the mesh cover 13. Multiple crushing elements 132 can also be spaced apart around the inner wall of the mesh cover 13, with each crushing element 132 evenly distributed, so that the waste is continuously collided with by the crushing elements 132 during rotation, further improving the crushing effect within the mesh cover 13.

[0032] This utility model provides a sewage tank comprising an upper shell, a lower shell, a mesh cover, and a crushing device. The upper shell has an inlet, and the lower shell and upper shell together form a receiving cavity for holding at least some sewage. The mesh cover is located in the receiving cavity and is used to collect sewage. At least one of the bottom wall or side wall of the mesh cover is provided with filter holes. The crushing device is at least partially disposed in the mesh cover to crush the sewage. At least one of the bottom wall or side wall of the mesh cover is provided with crushing elements for collision and decomposition of the sewage during agitation. Thus, sewage is collected in the mesh cover after passing through the inlet. The crushing device inside the mesh cover crushes the sewage before it passes through the mesh cover and enters the receiving cavity. Simultaneously, the crushing elements on the inner side wall of the mesh cover assist the crushing device in crushing the sewage in the mesh cover, increasing the processing speed of the crushing device and ensuring that the sewage is fully processed in the mesh cover, thereby improving the sewage tank's discharge efficiency. This method involves crushing the waste entering the sewage tank, making it easier to discharge and preventing blockages caused by large waste. This improves the sewage tank's discharge efficiency, reduces the need for manual pipe clearing, enhances product usability, and improves the user experience, providing a better user experience.

[0033] like Figure 1 and Figure 2 As shown, in some embodiments, the crushing device 14 includes a rotating rod 141 and a driving member 142. The rotating rod 141 is rotatably disposed within the mesh cover 13 to at least agitate the contaminants located within the mesh cover 13. The driving member 142 is connected to the rotating rod 141 to drive the rotating rod 141 to rotate. At least the bottom wall of the mesh cover 13 is provided with a plurality of filter holes 131 for discharging the crushed contaminants (see reference). Figure 3 Understandably, a rotatable rotating rod 141 is provided inside the mesh cover 13. The driving member 142 is connected to the rotating rod 141 and drives the rotating rod 141 to rotate inside the mesh cover 13. At the same time, driven by the driving member 142, the rotating rod 141 alternately rotates forward and reverse inside the mesh cover 13. The rotation of the rotating rod 141 fully agitates the dirt. Under the action of the rotating rod 141, the dirt is broken down to the size that can pass through the filter holes 131 on the mesh cover 13, so as to facilitate subsequent sewage discharge.

[0034] In some embodiments, the driving member 142 drives the rotating rod 141 to rotate in the following way: the driving member 142 drives the rotating rod 141 to alternately rotate forward and reverse for 1 second each at a speed of 700 rpm (rpm is an abbreviation for Revolutions Per Minute, which means the number of times the rotating rod rotates per minute), and continues to rotate for 5 minutes. This speed not only effectively agitates and breaks down the dirt, but also keeps the noise generated during rotation within a suitable range. Furthermore, the duration of each forward and reverse rotation, as well as the total rotation time, allows the dirt to be gradually broken down under continuous agitation and repeated pulling, achieving effective crushing.

[0035] Additionally, it should be noted that clockwise rotation can be either clockwise or counterclockwise, while counterclockwise rotation is in the opposite direction to clockwise rotation.

[0036] Furthermore, the maximum size of the filter hole 131 can be limited to 8mm. That is to say, the dirt in the mesh cover 13 needs to be crushed into particles smaller than 8mm before it can pass through the filter hole 131. The filter hole 131 limits the size of the dirt so that the dirt can be fully processed in the mesh cover 13, avoiding insufficient processing of the dirt by the rotating rod 141, which would still cause blockage during the sewage discharge process, thus ensuring the function of the crushing device 14.

[0037] This embodiment of the invention achieves the crushing function through the rotation of a rotating rod, simplifying the structure of the crushing device and facilitating installation, disassembly, and cleaning. Simultaneously, by limiting the size of the filter holes on the mesh cover, the size of the contaminants is restricted, ensuring that the crushing device can fully process the contaminants, improving the crushing effect, and optimizing product performance.

[0038] In some embodiments, such as Figure 3 and Figure 4 As shown, the breaker 132 is a baffle 133 protruding from the inner wall of the mesh cover 13. The baffle 133 includes a first impact surface 1331 and a second impact surface 1332 for the contaminant to collide with it. The first impact surface 1331 and the second impact surface 1332 are connected by a transition portion 134. The first impact surface 1331 and the second impact surface 1332 have different shapes to generate different impact forces. In other words, the baffle 133 is set on the inner wall of the mesh cover 133 as the breaker 132, protruding from the inner wall of the mesh cover 13 towards the center of the mesh cover 13, so that the baffle 133 can fully contact the contaminant. Meanwhile, the baffle 133 has a first collision surface 1331 and a second collision surface 1332 with different shapes. The ends of the first collision surface 1331 and the second collision surface 1332 that are away from the inner side of the mesh cover 13 are connected together by a transition part 134. When the dirt collides with the first collision surface 1331 and the second collision surface 1332, it will be subjected to different impact forces. By alternating impacts of different forces, the crushing effect of the crusher on the dirt is improved.

[0039] In some embodiments, the first collision surface 1331 is an arc-shaped curved surface, and the second collision surface 1332 is a flat surface. Understandably, when the rotating rod 141 drives the dirt to rotate forward (counterclockwise), the dirt collides with the first collision surface 1331. Since the first collision surface 1331 is an arc-shaped curved surface and smoothly transitions to the inner wall of the mesh cover 13, the dirt is buffered when colliding with the first collision surface 1331, resulting in a smaller impact force. When the rotating rod 141 drives the dirt to rotate in the opposite direction (clockwise), the dirt collides with the second collision surface 1332. Since the second collision surface 1332 is a flat surface and is nearly vertically positioned on the inner wall of the mesh cover 13, the dirt is directly impacted when it comes into contact with the second collision surface 1332, resulting in a larger impact force. Because the rotating rod 141 alternates between forward and reverse rotation within the mesh cover 13, the dirt is alternately subjected to impacts of varying forces during the crushing process within the mesh cover 13, making it easier to crush the dirt within the mesh cover 13.

[0040] Additionally, it should be noted that the above-mentioned arrangement of the first collision surface 1331 and the second collision surface 1332 is only an example. The first collision surface 1331 and the second collision surface 1332 on the baffle 133 can also be interchanged, as long as it can ensure that the dirt is alternately subjected to impacts of different magnitudes during the crushing process inside the mesh cover 13. No further restrictions are imposed here.

[0041] This utility model embodiment sets up a first collision surface and a second collision surface with different shapes, so that the dirt receives different impact forces during the forward and reverse rotation. Through the alternating impacts of different forces, the dirt can be more thoroughly crushed inside the mesh cover, improving the crushing effect and speed, ensuring the crushing effect of the crushing device, and optimizing the working performance of the crushing device.

[0042] In some embodiments, such as Figure 2 and Figure 4 As shown, a crushing structure 1341 for breaking down dirt is provided on the transition section 134. That is, the end of the baffle 133 is provided with the crushing structure 1341. When dirt rotates inside the mesh cover 13, some dirt will approach the rotation axis of the rotating rod 141 and is unlikely to collide with the baffle 133. At this time, the crushing structure 1341 is provided on the transition section 134, so that the dirt inside will at least collide with the crushing structure 1341 during rotation. The crushing structure 1341 breaks down the dirt, ensuring the crushing effect of the baffle 133.

[0043] This utility model embodiment features a crushing structure on the transition section. The crushing structure and the baffle work together to crush the dirt, allowing the dirt in the mesh to be fully crushed in a short time. This ensures the speed and effectiveness of the crushing device in crushing dirt in the mesh, thereby improving the efficiency of dirt treatment.

[0044] In some embodiments, such as Figure 4 and Figure 5 As shown, the crushing structure 1341 consists of multiple protrusions with pointed tips, which are spaced apart along the height direction of the mesh cover 13. Alternatively, the crushing structure 1341 can be a crushing plate for the impact and decomposition of contaminants, which extends along the height direction of the mesh cover 13.

[0045] In other words, the broken structure 1341 can be as follows: Figure 4 The structure shown has multiple protrusions spaced apart along the height of the mesh cover 13. Each protrusion has a pointed end, and the dirt is torn apart by the pointed ends of the multiple protrusions, further crushing the dirt.

[0046] like Figure 5 As shown, the crushing structure 1341 can also be configured as a crushing plate. When the dirt comes into contact with the crushing plate, it will collide with the crushing plate. The dirt will be further decomposed through continuous collision with the crushing plate, ensuring that the dirt is fully crushed.

[0047] Additionally, it should be noted that the two crushing structures mentioned above are merely examples. Other crushing structures are also possible, as long as they can crush dirt. No further restrictions are imposed here.

[0048] This embodiment of the invention restricts the structure of the crushing structure to ensure the crushing effect of the crushing structure on the waste, improve the efficiency of waste treatment, and optimize the performance of the product.

[0049] In some embodiments, such as Figure 1 and 6 As shown, the minimum thickness of the rotating rod 141 along the height direction of the mesh cover 13 is at least greater than a preset value. Understandably, during high-speed rotation, sharp blades easily become entangled with dirt, affecting the continuous crushing effect and even requiring manual cleaning, causing significant inconvenience to the user. Therefore, the crushing device 14 needs to use a rotating rod with a certain thickness. That is, the collision surface 1410 on the rotating rod 141 collides with the dirt, crushing it through the impact. At this point, the contact area between the collision surface 1410 and the dirt is large, making it less likely for dirt to become entangled on the rotating rod 141 during rotation, thus improving the efficiency of the crushing device in crushing dirt.

[0050] This embodiment of the invention provides a certain thickness to the rotating rod, increasing the contact area between the dirt and the rotating rod, preventing dirt from getting tangled on the rotating rod and affecting the working efficiency of the crushing device, reducing the frequency of manual cleaning of the crushing device, simplifying the user's operation, and improving the crushing effect of the crushing device, thus optimizing the working performance of the product.

[0051] In some embodiments, such as Figure 1 and Figure 3 As shown, a retaining ring 135 is fixedly connected to one end of the mesh cover 13 facing the upper shell 11. The retaining ring 135 forms an opening 130 for dirt to enter the mesh cover 13. Understandably, the mesh cover 13 collects dirt, and the crushing device 14 agitates and crushes the dirt inside the mesh cover 13. During this process, the dirt will rotate along the inner wall of the mesh cover 13. At this time, there is a risk that the dirt will splash out of the mesh cover 13. In order to avoid the dirt collected in the mesh cover 13 from splashing, a retaining ring 135 is provided at one end of the mesh cover 13 near the dirt inlet 110. The retaining ring 135 forms an opening 130 in the mesh cover 13. During the rotation of the dirt inside the mesh cover 13, the retaining ring 135 will block the dirt inside and prevent the dirt from splashing out of the opening 130. At the same time, it can also control the amount of dirt entering the mesh cover 13 at the same time, and better avoid the situation where the crushing device 14 is blocked due to too much dirt entering the mesh cover 13 at the same time.

[0052] This utility model embodiment sets a baffle ring on the mesh cover to block dirt inside the mesh cover, preventing dirt from splashing and ensuring that sewage passing through the inlet does not splash back, thus ensuring the mesh cover's effective collection of dirt, improving the crushing device's dirt treatment efficiency, and providing users with a good user experience.

[0053] In some embodiments, such as Figure 1 and Figure 3 As shown, the baffle ring 135 has multiple through holes 1351 for at least one type of wastewater to enter the inner mesh cover 13, with the through holes 1351 spaced apart. It can be understood that the baffle ring 135 also has multiple spaced through holes 1351, through which wastewater passes through the inlet 110 (refer to...). Figure 2 After passing through the opening 130 and through-hole 1351, the wastewater enters the mesh cover 13 and is then stored in the receiving cavity 100. During this process, the wastewater is collected inside the mesh cover 13 and processed by the crushing device 14. The crushed wastewater can then be temporarily stored in the receiving cavity 100 through the filter holes 131 and through-hole 1351. It should be noted that the through-hole 1351 and the filter holes 131 have the same size. That is to say, the through-hole 1351 allows wastewater to pass through and enter the receiving cavity 100, and also allows the crushed wastewater inside the mesh cover 13 to be discharged into the receiving cavity 100, thus improving the efficiency of the mesh cover 13 in collecting wastewater and discharging wastewater.

[0054] This utility model embodiment improves the efficiency of sewage passing through the mesh cover by setting multiple spaced through holes on the retaining ring. After the dirt is crushed inside the mesh cover, it can also enter the receiving cavity through the through holes, improving the efficiency of dirt passing through the mesh cover and further increasing the speed of dirt processing by the crushing device, thereby improving the sewage discharge efficiency of the sewage tank.

[0055] In some embodiments, such as Figure 1 and Figure 2 As shown, the lower shell 12 has a mounting cavity 120, the drive component 142 is fixed inside the mounting cavity 120, and the mesh cover 13 is connected to the drive component 142. That is, the lower shell 12 has a mounting cavity 120 for mounting the drive component 142, the mesh cover 13 is located in the receiving cavity 100, and the side of the mesh cover 13 away from the sewage inlet 110 is connected to the drive component 142. Part of the drive component 142 passes through the mesh cover 13 and is connected to the rotating rod 141 to drive the rotating rod 141 to rotate. Furthermore, the drive component 142 is located at the bottom of the sewage tank, and can also drive the sewage in the sewage tank 1 to be discharged through the sewage pipe. Placing the drive component 142 in the mounting cavity 120 at the bottom of the sewage tank 1 avoids the drive component 142 occupying space in the receiving cavity 100, optimizing the internal space planning of the sewage tank 1. At the same time, mounting the mesh cover 13 on the drive component 142 allows the rotating rod 141 to be directly connected to the drive component 142, improving the transmission efficiency of the drive component 142.

[0056] This embodiment of the utility model optimizes the internal space planning of the sewage tank by placing the driving component in the mounting cavity of the lower shell, so that the driving component does not occupy the internal space of the receiving cavity, ensuring the capacity of the sewage tank. Furthermore, the driving component can not only drive the rotating rod to rotate, but also drive the sewage in the receiving cavity to be discharged from the sewage pipe, eliminating the need for a separate drainage pump and simplifying the internal structure of the sewage tank.

[0057] This utility model embodiment also provides a mobile nursing robot, including a body and a wastewater tank 1 as described in any of the above embodiments, the wastewater tank 1 being installed in the body. The body can serve as the main shell component of the mobile nursing robot, and its interior has installation space for installing the wastewater tank 1 and other necessary components. Furthermore, casters can be provided on the body to enable the overall movement of the mobile nursing robot via the casters.

[0058] Understandably, mobile care robots are typically used to assist the elderly and people with mobility issues with defecation. After the user defecates, the robot will rinse the excrement and toilet paper with clean water into the wastewater tank 1. Once the wastewater tank 1 is full, the mobile care robot will automatically move to the toilet to drain and clean the wastewater tank 1.

[0059] Specifically, such as Figure 1 and Figure 2 As shown, after the sewage passes through the inlet 110, the mesh cover 13 collects the impurities in the sewage. A crushing device 14 is installed inside the mesh cover 13. The crushing device 14 crushes the impurities within the mesh cover 13 until the impurities are large enough to pass through the filter holes 131 on the mesh cover 13 (see...). Figure 3 The crushed waste enters the receiving cavity 100 through the mesh cover 13. Once the wastewater tank 1 is full, it can be discharged from the wastewater tank through the sewage pipe. At this time, the crushed waste particles are small and are not easy to block the sewage pipe during the sewage discharge process, which improves the sewage discharge efficiency of the wastewater tank 1.

[0060] This utility model embodiment improves the wastewater tank of the mobile nursing robot, enabling waste to be fully crushed within the mesh cover, reducing its size and making it less prone to clogging during discharge. This improves the wastewater tank's discharge efficiency and eliminates the need for manual pipe clearing, optimizing product performance, reducing daily maintenance difficulty, and enhancing user convenience and experience.

[0061] 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 tank for use with a mobile nursing robot, characterized in that, The wastewater tank includes: The upper shell has a sewage inlet; The lower shell, together with the upper shell, forms a receiving cavity, which is at least used to hold dirt; A mesh cover, located in the receiving cavity and used to collect the dirt, has filter holes provided on at least one of its bottom wall or side wall; A crushing device, at least partially disposed within the mesh cover, is used to crush the contaminant; The bottom wall or side wall of the mesh cover is provided with a crushing body for the collision and decomposition of the dirt during stirring.

2. The sewage tank according to claim 1, characterized in that, The crushing device includes: A rotating rod is rotatably disposed within the mesh cover to at least agitate the dirt located within the mesh cover; A driving component is connected to the rotating rod to drive the rotating rod to rotate; The mesh cover has multiple filter holes on its bottom or side walls.

3. The sewage tank according to claim 1, characterized in that, The crushing body is a baffle rib protruding from the inner side wall of the mesh cover. The baffle rib includes a first collision surface and a second collision surface for the dirt to collide with, and the first collision surface and the second collision surface are connected by a transition part. The first and second collision surfaces have different shapes to generate different impact forces.

4. The sewage tank according to claim 3, characterized in that, The first collision surface is an arc-shaped curved surface, and the second collision surface is a flat surface.

5. The sewage tank according to claim 3, characterized in that, The transition section is provided with a crushing structure for breaking down the dirt.

6. The sewage tank according to claim 5, characterized in that, The crushing structure is a plurality of protrusions with pointed tips, and each of the protrusions is spaced apart along the height direction of the mesh cover; or the crushing structure is a crushing plate for impacting and decomposing the dirt, and the crushing plate extends along the height direction of the mesh cover.

7. The sewage tank according to any one of claims 1 to 6, 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 opening for the dirt to enter the mesh cover.

8. The sewage tank according to claim 7, characterized in that, The baffle ring has multiple through holes for sewage to enter the mesh cover, and the through holes are spaced apart.

9. The sewage tank according to claim 2, characterized in that, The lower shell is provided with a mounting cavity, the driving component is fixed in the mounting cavity, and the mesh cover is connected to the driving component.

10. A mobile nursing robot, characterized in that, It includes a body and a sewage tank according to any one of claims 1-9, wherein the sewage tank is installed in the body.

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