Cleaning turntable, cleaning assembly and cleaning machine

Abstract

The utility model discloses a cleaning turntable which is applied to a cleaning machine, a negative pressure chamber is formed in the cleaning machine, an airflow channel which can be communicated with the negative pressure chamber is formed on the cleaning turntable, and the airflow channel is a fan-shaped channel. Therefore, air flow entering the cleaning turntable circulates through the fan-shaped air flow channel, collision with the two side walls of the air flow channel can be avoided to the greatest extent, so that the air flow resistance is reduced, the adsorption effect of the cleaning turntable is improved, and the walking stability and the cleaning capacity of the cleaning turntable are improved. In addition, the utility model further discloses a cleaning assembly which comprises a cleaning piece and a cleaning rotary disc, and the cleaning piece is arranged on the cleaning rotary disc. The utility model further discloses a cleaning machine which comprises a machine body and the cleaning assembly, and the cleaning assembly is arranged on the machine body.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning machines, in particular to a cleaning turntable, a cleaning component and a cleaning machine. Background Art

[0002] With the continuous improvement of modern living standards, people's requirements for quality of life are getting higher and higher, and intelligent devices are increasingly widely used in daily life. In particular, in recent years, intelligent and efficient cleaning robots have continued to emerge, such as some sweeping robots or window cleaning robots. These cleaning robots can do a lot of cleaning work in a short time, saving people a lot of time, thus freeing people from tedious housework. Therefore, these cleaning robots are becoming more and more popular.

[0003] Among them, there is a cleaning robot that uses the internal and external air pressure difference (ie, negative pressure) formed by its own fan when working to adsorb on the surface to be cleaned, and then drives the cleaning turntable to move to clean the surface to be cleaned.

[0004] The existing cleaning turntable is provided with curved ribs inside, and curved channels are formed between adjacent ribs. When the cleaning robot is walking, the airflow entering the cleaning turntable through the fan will pass through the curved channel and collide with the curved ribs and be blocked, thereby increasing the resistance of the airflow, affecting the airflow speed, reducing the adsorption force between the cleaning robot and the surface to be cleaned, and further affecting the walking stability and cleaning ability of the cleaning robot. Utility Model Content

[0005] The main purpose of the utility model is to provide a cleaning turntable, a cleaning component and a cleaning machine, aiming to solve the problems of unstable walking and insufficient cleaning ability of the existing cleaning machines.

[0006] To achieve the above-mentioned purpose, the utility model proposes a cleaning turntable, which is applied to a cleaning machine, wherein a negative pressure chamber is formed in the cleaning machine, wherein the cleaning turntable forms an air flow channel which can be connected to the negative pressure chamber, and the air flow channel is a fan-shaped channel.

[0007] In some embodiments, the cleaning turntable comprises:

[0008] The turntable body is formed with an annular accommodating cavity;

[0009] A plurality of flow guides are arranged at intervals in the accommodating cavity, and adjacent flow guides form the air flow channel.

[0010] In some embodiments, the plurality of guide members extend in radial straight lines; and / or, the plurality of guide members extend in arc lines; and / or, the plurality of guide members are any combination of straight line extension and arc line extension.

[0011] In some embodiments, the accommodating cavity has a first cavity wall and a second cavity wall disposed around the first cavity wall, and each of the flow guide members extends linearly from the first cavity wall to the second cavity wall.

[0012] In some embodiments, the height of the guide member and the first cavity wall is not higher than the height of the second cavity wall.

[0013] In some embodiments, the cleaning turntable also includes a reinforcing wall disposed in the accommodating cavity, the reinforcing wall is located between the first cavity wall and the second cavity wall, the reinforcing wall is disposed adjacent to the second cavity wall or the reinforcing wall is disposed in close proximity to the second cavity wall, and each of the guide members is intersected and connected to the reinforcing wall.

[0014] In some embodiments, a plurality of rib structures are further provided in the accommodating cavity, and the plurality of rib structures are spaced apart from the plurality of flow guide members.

[0015] In some embodiments, the radiation direction of the plurality of rib structures is consistent with that of the plurality of guide members, and one end of each rib structure is connected to the second cavity wall, and the other end extends toward the first cavity wall or extends to the first cavity wall.

[0016] The utility model also provides a cleaning assembly, comprising a cleaning member and a cleaning turntable as described above, wherein the cleaning member is arranged on the cleaning turntable.

[0017] The utility model also provides a cleaning machine, comprising a machine body and the above cleaning component, wherein the cleaning component is arranged on the machine body.

[0018] In some embodiments, an internal channel for airflow is formed in the body, the internal channel is in communication with the airflow channel, and the internal channel is in communication with the negative pressure device for generating negative pressure;

[0019] Air enters the interior of the cleaning turntable and flows into the internal channel through the air flow channel.

[0020] The utility model forms a fan-shaped air flow channel in the cleaning turntable, and the air flow entering the cleaning turntable flows through the fan-shaped air flow channel, which can avoid collision with the two side walls of the air flow channel to the greatest extent, thereby reducing the resistance of air flow, increasing the adsorption effect of the cleaning turntable, and further improving the walking stability and cleaning ability of the cleaning turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of an embodiment of the cleaning turntable of the utility model;

[0022] Figure 2 for Figure 1 Front view of the cleaning turntable;

[0023] Figure 3 for Figure 1 A schematic cross-sectional view of a cleaning turntable;

[0024] Figure 4 This is a structural schematic diagram of another embodiment of the cleaning turntable of the utility model;

[0025] Figure 5 for Figure 4 Front view of the cleaning turntable;

[0026] Figure 6 This is a schematic structural diagram of an embodiment of the cleaning machine of the utility model;

[0027] Figure 7 It is a cross-sectional schematic diagram of an embodiment of the cleaning machine of the utility model.

[0028] Description of Figure Numbers:

[0029] Label name Label name 100 Cleaning the turntable 200 Cleaning components 101 Airflow Channel 201 Cleaning parts 10 Turntable body 300 Cleaning Machine 11 Accommodation cavity 301 Body 20 Guide piece 302 Internal Passage 111 First cavity wall 303 Negative pressure device 112 Second cavity wall 304 Walking components 113 Strengthen the wall 30 Rib structure

[0030] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the scheme in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0034] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] The utility model proposes a cleaning turntable 100, which is applied to a cleaning machine 300, and is mainly used to clean a surface to be cleaned. The cleaning machine 300 of the utility model can be a window cleaning machine, a wall cleaning machine, a ceiling cleaning machine that needs to be adsorbed on the surface to be cleaned, or a floor cleaning machine that does not need to be adsorbed on the surface to be cleaned. As a conventional application, the present application takes a window cleaning machine as an example for explanation. Accordingly, the surface to be cleaned can be a door, a tile wall, a ceiling, a window surface, a floor, etc.

[0036] In some embodiments, the cleaning machine 300 includes a body 301 and a negative pressure device 303 disposed on the body 301. The body 301 moves with the surface to be cleaned. A negative pressure chamber is disposed in the body 301. The cleaning turntable 100 is mounted at the bottom of the body 301 and communicates with the negative pressure chamber. A closed space is formed between the cleaning turntable 100, the negative pressure chamber, and the surface to be cleaned. The negative pressure device 303 may be a negative pressure fan or a vacuum pump, which is used to extract the airflow in the closed space so as to generate negative pressure in the closed space, thereby causing the cleaning turntable 100 to be adsorbed on the surface to be cleaned.

[0037] Please refer to Figures 1 to 3In one embodiment of the utility model, the cleaning turntable 100 is formed with an airflow channel 101 that can be communicated with the negative pressure chamber, and the airflow channel 101 is a fan-shaped channel. The fan-shaped here should be understood as: the distance between the two sides of the airflow channel 101 gradually decreases from one end to the other end, and is in a tapered shape. In this way, the area where the airflow enters the cleaning turntable 100 is increased. When the cleaning machine 300 is adsorbed on the surface to be cleaned, the cleaning turntable 100 fits the surface to be cleaned, and the pressure inside the cleaning turntable 100 is less than the external atmospheric pressure, so that it is tightly adsorbed on the surface to be cleaned. At this time, due to the low internal air pressure of the cleaning turntable 100, the external air will flow into the cleaning turntable 100, and the airflow entering the cleaning turntable 100 circulates through the fan-shaped airflow channel 101. Due to the suction effect of the negative pressure device 303, the air flow flows from the wide distance to the narrow distance of the fan-shaped air flow channel 101, thereby minimizing the collision with the two side walls of the air flow channel 101, reducing the resistance to air flow, increasing the adsorption effect of the cleaning turntable 100, and further improving the walking stability and cleaning ability of the cleaning turntable 100, avoiding falling and the like.

[0038] It should be noted that the airflow channel 101 can also be constructed as a channel that is approximately fan-shaped or fan-shaped, and the above-mentioned effects can be achieved. As long as it does not deviate from the design concept of the utility model, it is within the protection scope of the utility model.

[0039] In some embodiments, the cleaning turntable 100 includes a turntable body 10, which is formed with an annular accommodating chamber 11; in this embodiment, the turntable body 10 is a circular ring structure, and an annular accommodating chamber 11 is arranged inside it. The accommodating chamber 11 has a certain depth and can be connected to the negative pressure device 303 to extract the air in the accommodating chamber 11 to generate negative pressure so that the cleaning turntable 100 is adsorbed on the surface to be cleaned.

[0040] The cleaning turntable 100 further includes a plurality of guide members 20, which are arranged at intervals in the accommodating cavity 11, and adjacent guide members 20 form an airflow channel 101. In this embodiment, the cross section of the guide member 20 is rectangular and convex, and the height is not higher than the surface of the accommodating cavity 11, and is used to divide the accommodating cavity 11 into a plurality of airflow channels 101, and adjacent airflow channels 101 can be set to be connected or disconnected.

[0041] In this embodiment, the distances between the multiple guide members 20 may be equal or unequal, and may be specifically set according to actual conditions, but is not limited thereto.

[0042] Furthermore, a plurality of guide members 20 extend straightly and radially from the center of the cleaning turntable 100, and the extension line of each guide member 20 passes through the center of the cleaning turntable 100. In the present embodiment, the guide members 20 are evenly distributed on the cleaning turntable 100 to divide the accommodating cavity 11 into a plurality of airflow channels 101, so that the airflow distribution of the cleaning turntable 100 is more uniform. Regardless of the direction in which the cleaning turntable 100 rotates, the air entering the cleaning turntable 100 will be guided through the airflow channel 101, which plays a role in restricting the flow direction of the airflow. Of course, the guide member 20 can also extend in an arc shape. The specific arc style is not limited in this application. The plurality of guide members 20 can also be a combination of straight line extension and arc extension, and the specific combination rules are not limited in this application.

[0043] Specifically, the accommodating cavity 11 has a first cavity wall 111 and a second cavity wall 112 disposed around the first cavity wall 111 , and each flow guide member 20 extends linearly from the first cavity wall 111 to the second cavity wall 112 .

[0044] In this embodiment, the cleaning turntable 100 is in the form of a circular ring structure, the first cavity wall 111 and the second cavity wall 112 are respectively in the form of a circular structure, and the first cavity wall 111 serves as the outer ring of the circular ring structure, and the second cavity wall 112 serves as the inner ring of the circular ring structure. Each flow guide 20 extends in a straight line from the first cavity wall 111 to the second cavity wall 112, thereby connecting the first cavity wall 111 and the second cavity wall 112 as a whole, which are not easy to separate, thereby strengthening the entire cleaning turntable 100.

[0045] In this embodiment, the first cavity wall 111 can contact obstacles (such as window frames) during the operation of the cleaning turntable 100 to play a role in preventing collisions, and the second cavity wall 112 provides a place for connecting and fixing the guide member 20. The entire cleaning turntable 100 can adopt an integrated molding structure, which is convenient for production and processing, and has high structural strength and is very durable.

[0046] When the cleaning turntable 100 is adsorbed on the surface to be cleaned, the second cavity wall 112 contacts the surface to be cleaned, and a closed space is formed between the cleaning turntable 100 and the surface to be cleaned. The negative pressure device 303 extracts the airflow in the closed space to generate negative pressure in the closed space, thereby adsorbing the cleaning turntable 100 on the surface to be cleaned. Therefore, in order to ensure that the cleaning turntable 100 is stably adsorbed on the surface to be cleaned, the height of the guide member 20 and the first cavity wall 111 of the cleaning turntable 100 is not higher than the height of the second cavity wall 112, so as to avoid the guide member 20 and the first cavity wall 111 protruding from the second cavity wall 112 and affecting the formation of the closed space, thereby ensuring that the cleaning turntable 100 can be stably adsorbed on the surface to be cleaned.

[0047] Preferably, the guide member 20, the first cavity wall 111 and the second cavity wall 112 of the utility model are arranged coplanarly, so that when the cleaning turntable 100 is stably adsorbed on the surface to be cleaned, the surfaces of the guide member 20, the first cavity wall 111 and the second cavity wall 112 are all in contact with the surface to be cleaned, further increasing the contact area between the cleaning turntable 100 and the surface to be cleaned, thereby increasing the friction between the two and improving the cleaning effect of the cleaning turntable 100.

[0048] In some embodiments, the cleaning turntable 100 further includes a reinforcing wall 113 disposed in the accommodating cavity 11, the reinforcing wall 113 is located between the first cavity wall 111 and the second cavity wall 112, the reinforcing wall 113 is disposed adjacent to the second cavity wall 112 or the reinforcing wall 113 is disposed in close contact with the second cavity wall 112, and each flow guide 20 is intersected and connected with the reinforcing wall 113. By providing the reinforcing wall 113, the present application can better increase the thickness of the outer wall of the cleaning turntable 100, and can better increase the rigidity and strength of the cleaning turntable 100, so as to better resist the influence of external forces, effectively hinder the flow of air particles to the inside of the cleaning turntable 100, and provide a stronger pressure-maintaining effect.

[0049] In this embodiment, the reinforcing wall 113 can be spaced apart from the second cavity wall 112, or can be fitted (without gap). When fitted, the reinforcing wall 113 and the second cavity wall 112 can be integrated to increase the contact area between the two and improve the anti-collision capability.

[0050] Preferably, the thickness of the reinforcing wall 113 is 0.5-1.5 mm, such as 1 mm, which can enhance the anti-collision capability formed by the second cavity wall 112 and the reinforcing wall 113. The spacing between the reinforcing wall 113 and the second cavity wall 112 is 0.5-1 mm, such as setting the spacing between the reinforcing wall 113 and the second cavity wall 112 to 0.5 mm, so that there will be a buffer space between the reinforcing wall 113 and the second cavity wall 112, which can further improve the anti-collision capability of the second cavity wall 112.

[0051] In some embodiments, please refer to Figure 4 and Figure 5, a plurality of rib structures 30 are also provided in the accommodating chamber 11, and the plurality of rib structures 30 are spaced apart from the plurality of guide members 20. In the present embodiment, the cross-sections of the plurality of rib structures 30 are rectangular and convex, and the height is not higher than the surface of the accommodating chamber 11. The plurality of rib structures 30 are preferably coplanar with the surface of the accommodating chamber 11. Under the condition of dynamic and stable adsorption of the cleaning machine 300, the surfaces of the plurality of rib structures 30 are in contact with the surface to be cleaned, thereby increasing the contact area between the cleaning turntable 100 and the surface to be cleaned, thereby increasing the friction between the two. In this way, during the movement of the cleaning machine 300, the friction force of the cleaning turntable 100 relative to the rotation of the surface to be cleaned increases, thereby increasing the cleaning force of the cleaning turntable 100 and improving the cleaning effect of the cleaning turntable 100.

[0052] In this embodiment, a plurality of rib structures 30 are distributed in the accommodating cavity 11 to maximize the structural strength and the overall firmness of the cleaning turntable 100. The number of rib structures 30 can be one, two, three, four or more, that is, the number of rib structures 30 does not affect the airflow in the cleaning turntable 100. In other words, even if a plurality of rib structures 30 are provided, the collision between the airflow and the two side walls of the airflow channel 101 can be avoided to the maximum extent to reduce the resistance of the air flow.

[0053] Please refer to Figure 6 The multiple rib structures 30 are in the same radial direction as the multiple guide members 20, that is, they extend radially from the center of the cleaning turntable 100, and the extension line of each rib structure 30 passes through the center of the cleaning turntable 100. In this embodiment, the guide members 10 and the rib structures 30 are both straight strip structures, and the guide members 10 and the rib structures 30 are evenly distributed on the cleaning turntable 100, so that the anti-slip friction force on the surface to be cleaned is more evenly distributed, achieving a better and more stable anti-slip effect.

[0054] Among them, one end of each rib structure 30 is connected to the second cavity wall 112, and the other end extends toward the first cavity wall 111 or extends to the first cavity wall 111, that is, the rib structure 30 can be at a certain distance from the first cavity wall 111 or be fixedly connected to the first cavity wall 111. The rib structure 30 is fixedly connected to the first cavity wall 111, which can increase the installation stability of the rib structure 30 and play a role in reinforcing the entire cleaning turntable 100. Of course, it is only exemplary, and other options can also be selected, and are not limited to this.

[0055] The utility model also provides a cleaning assembly 200, including a cleaning member 201 and a cleaning turntable 100 as described above, wherein the cleaning member 201 is disposed on the cleaning turntable 100. Since the cleaning machine 300 adopts all technical solutions of all embodiments of the cleaning turntable 100, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0056] In this embodiment, the cleaning member 201 can be a cleaning cloth, a cleaning sponge, etc. The cleaning member 201 can be directly set on the outer periphery of the cleaning turntable 100 by elastic sleeve, or can be set on the cleaning turntable 100 by means of fixing members, etc. For example, it can be attached to the cleaning turntable 100 by Velcro, and is used to clean the surface to be cleaned during the rotation of the cleaning turntable 100. Of course, the fixing method of the cleaning member 201 and the cleaning turntable 100 is only exemplary, and other methods can also be selected, and are not limited to this.

[0057] Please refer to Figure 6 The utility model further provides a cleaning machine 300, including a machine body 301 and a cleaning assembly 200 as described above, wherein the cleaning assembly 200 is disposed on the machine body 301. Since the cleaning machine 300 adopts all technical solutions of all embodiments of the cleaning assembly 200, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0058] In some embodiments, the machine body 301 is further provided with a walking assembly 304, which can be specifically arranged at the bottom of the machine body 301, facing the side of the surface to be cleaned. Among them, the walking assembly 304 can adopt various structural forms, for example, the walking assembly 304 adopts a walking turntable, and the walking turntable rotates on the surface to be cleaned, and drives the machine body 301 to move through the friction between the surface to be cleaned. Alternatively, the walking assembly 304 adopts other walking structures, such as rollers. Of course, this is only exemplary and not restrictive.

[0059] Furthermore, the number of the traveling components 304 and the number of the cleaning components 200 are set correspondingly, and the cleaning components 200 are set at the periphery of the traveling components 304, and there is a gap between the cleaning components 200 and the traveling components 304, or the cleaning components 200 and the traveling components 304 are fitted. The cleaning components 200 are in contact with the surface to be cleaned and can rotate relative to the body 301, so as to clean the surface to be cleaned. Specifically, there can be a gap between the cleaning turntable 100 and the traveling turntable in this embodiment, or they can be in contact with each other, for example, they can be close to each other and contact, as long as the two can move relative to each other or move synchronously.

[0060] In this embodiment, a cavity is formed in the cleaning turntable 100, and a traveling turntable is accommodated in a cavity. The negative pressure device 303 is connected to each cavity to provide negative pressure for each cavity, so that the traveling turntable and the cleaning turntable 100 are adsorbed on the surface to be cleaned during operation.

[0061] For some examples, please refer to Figure 7An internal channel 302 for air flow is formed in the body 301, the internal channel 302 is connected to the air flow channel 101, and the internal channel 302 is connected to the negative pressure device 303 for generating negative pressure; air enters the cleaning turntable 100 and flows into the internal channel 302 through the air flow channel 101.

[0062] In summary, the utility model forms a fan-shaped airflow channel 101 in the cleaning turntable 100, and the airflow entering the cleaning turntable 100 flows through the fan-shaped airflow channel 101, which can avoid collision with the two side walls of the airflow channel 101 to the greatest extent, thereby reducing the resistance to air flow, increasing the adsorption effect of the cleaning turntable 100, and further improving the walking stability and cleaning ability of the cleaning turntable 100.

[0063] The above are only partial or preferred embodiments of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A cleaning turntable, applied to a cleaning machine, wherein a negative pressure chamber is formed in the cleaning machine, characterized in that: The cleaning turntable is formed with a containing cavity, and the cleaning turntable is formed with an air flow channel which can be communicated with the negative pressure chamber, and the air flow channel is a fan-shaped channel.

2. The cleaning turntable according to claim 1, characterized in that: The cleaning turntable comprises: The turntable body is formed with the accommodating cavity, and the accommodating cavity is annular; A plurality of flow guides are arranged at intervals in the accommodating cavity, and adjacent flow guides form the air flow channel.

3. The cleaning turntable according to claim 2, characterized in that: The plurality of guide members extend in radial straight lines; and / or, the plurality of guide members extend in arc lines; and / or, the plurality of guide members are any combination of straight line extension and arc line extension.

4. The cleaning turntable according to claim 2, characterized in that: The accommodating cavity has a first cavity wall and a second cavity wall disposed around the first cavity wall, and each of the flow guides extends linearly from the first cavity wall to the second cavity wall.

5. The cleaning turntable according to claim 4, characterized in that: The height of the guide member and the first cavity wall is not higher than the height of the second cavity wall.

6. The cleaning turntable according to claim 4, characterized in that: The cleaning turntable also includes a reinforcing wall arranged in the accommodating cavity, the reinforcing wall is located between the first cavity wall and the second cavity wall, the reinforcing wall is arranged adjacent to the second cavity wall or the reinforcing wall is arranged in close contact with the second cavity wall, and each of the guide members is intersected and connected with the reinforcing wall.

7. The cleaning turntable according to any one of claims 4 to 6, characterized in that: A plurality of rib structures are also provided in the accommodating cavity, and the plurality of rib structures are spaced apart from the plurality of flow guide members.

8. The cleaning turntable according to claim 7, characterized in that: The radiation direction of the plurality of rib structures is consistent with that of the plurality of guide members, and one end of each rib structure is connected to the second cavity wall, and the other end extends toward the first cavity wall or extends to the first cavity wall.

9. A cleaning component, characterized in that: It comprises a cleaning member and a cleaning turntable as claimed in any one of claims 1 to 8, wherein the cleaning member is arranged on the cleaning turntable.

10. A cleaning machine, characterized in that: It comprises a machine body and a cleaning component as claimed in claim 9, wherein the cleaning component is arranged on the machine body.

11. The cleaning machine according to claim 10, characterized in that An internal channel for airflow is formed in the body, the internal channel is in communication with the airflow channel, and the internal channel is in communication with the negative pressure device for generating negative pressure; Air enters the interior of the cleaning turntable and flows into the internal channel through the air flow channel.

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