Pneumatic pinch valve for a robot vacuum cleaner and robot vacuum cleaner thereof

Abstract

This application relates to the field of valve technology, and in particular to a pneumatic clamp valve for a robotic vacuum cleaner and the robotic vacuum cleaner thereof. The pneumatic clamp valve includes a main valve body, a diaphragm, and a valve cover. The main valve body has a first through-channel along its axial direction, and an air inlet and an air outlet are provided on the peripheral sidewall of the main valve body. The diaphragm has a second through-channel with an opening along the axial direction of the main valve body. The diaphragm passes through the first channel along the axial direction of the main valve body, and its two ends overlap the two ends of the main valve body, forming an air cavity between the diaphragm and the inner wall of the first channel. The air inlet and the air outlet are connected to the air cavity. The valve cover is installed at the end of the main valve body and has a mounting hole communicating with the second channel. Furthermore, an annular protrusion is provided on the side of the valve cover facing the diaphragm, and the annular protrusion surrounds the circumference of the opening and provides a line seal against the diaphragm. This application improves the sealing performance between the valve cover and the diaphragm by providing an annular protrusion on the side of the valve cover facing the diaphragm.

Description

Technical Field

[0001] This application relates to the field of valve technology, and in particular to a pneumatic clamp valve for a sweeping robot and the sweeping robot thereof. Background Technology

[0002] Robotic vacuum cleaners are a common type of smart home device. The pneumatic clamp valve is one of the components of a robotic vacuum cleaner, installed between the wastewater pipe and the water tank. When the robotic vacuum cleaner is working, the pneumatic clamp valve opens, and wastewater, under negative pressure, flows through the wastewater pipe and the pneumatic clamp valve into the water tank.

[0003] Pneumatic pinch valves generally include components such as a diaphragm, valve body, and end cap. The diaphragm has channels for the medium to flow through. The diaphragm is installed in the valve body and forms a sealed air chamber with the inner wall of the valve body. In response to changes in the internal pressure of the air chamber, the diaphragm deforms to control the opening and closing of the channel. Currently, the sealing between the diaphragm and the valve body is generally achieved using a separate sealing element. This sealing element is fitted onto the outer peripheral wall of the diaphragm and then abuts against the inner wall of the valve body for sealing. A hard seal is used between the end cap and the valve body. This achieves the sealing between the diaphragm and the valve body, and between the end cap and the valve body. However, since the diaphragm is generally flexible, it is prone to deformation after responding to air pressure, leading to the failure of the seal between the sealing element and the inner wall of the valve body. This necessitates the use of an additional sealing element, resulting in a relatively complex sealing structure and higher cost. Utility Model Content

[0004] Therefore, it is necessary to provide a pneumatic clamp valve for a sweeping robot with good sealing performance and a relatively simple sealing structure, as well as a sweeping robot.

[0005] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0006] A pneumatic pipe clamp valve for a robotic vacuum cleaner, used to control the opening or closing of a pipe, wherein the pneumatic pipe clamp valve for the robotic vacuum cleaner includes at least:

[0007] The main valve body has a through first channel along the axial direction, and an air inlet and an air outlet are provided on the peripheral sidewall of the main valve body.

[0008] A diaphragm has a second channel with an opening along the axial direction of the main valve body; the diaphragm passes through the first channel along the axial direction of the main valve body, and its two ends respectively overlap the two ends of the main valve body; an air cavity is formed between the diaphragm located in the first channel and the inner wall of the first channel; the air inlet and the air outlet are connected to the air cavity; wherein, in response to the air intake at the air inlet or the air outlet at the air outlet, the diaphragm can deform with the pressure change in the air cavity to control the opening and closing of the second channel;

[0009] The valve cover is installed at the end of the main valve body along the axial direction of the main valve body and presses the end of the diaphragm onto the end of the main valve body. The valve cover has a mounting hole communicating with the second channel, which is used to install an external pipeline. The valve cover has an annular protrusion on one side facing the diaphragm. The annular protrusion surrounds the circumference of the opening and abuts against the diaphragm in a line seal.

[0010] Understandably, this application achieves a seal between the valve cover and the main valve body by overlapping both ends of the diaphragm onto the main valve body and then pressing it in using the valve cover. Simultaneously, an annular protrusion is provided on the side of the valve cover facing the diaphragm, forming a line seal between the protrusion and the diaphragm, thereby increasing the sealing force between the valve cover and the diaphragm and improving the sealing effect. In other words, this application utilizes the diaphragm itself to achieve a seal between the diaphragm, the valve cover, and the valve body, thus reducing the need for additional sealing components; and combined with the line seal, the sealing performance between the valve cover and the diaphragm is significantly improved.

[0011] In one embodiment, at least two protrusions are provided, and the two protrusions are arranged radially spaced along the main valve body.

[0012] Understandably, by setting at least two protrusions, at least two sealing lines can be formed in the radial direction of the main valve body, thus effectively improving the sealing effect between the diaphragm and the valve cover.

[0013] In one embodiment, along the axial direction of the main valve body, a first protrusion is provided at the end of the main valve body, and a first snap-fit ​​groove corresponding to the first protrusion is formed on the end of the diaphragm and on the side away from the valve cover, and the first protrusion and the first snap-fit ​​groove are engaged.

[0014] Understandably, by setting a first protrusion on the main valve body and a first groove on the diaphragm, the stability of the diaphragm's fixation on the main valve body is improved through the cooperation of the first protrusion and the first groove. At the same time, this increases the contact area between the main valve body and the diaphragm, further enhancing the sealing effect between them.

[0015] In one embodiment, along the axial direction of the main valve body, the end of the main valve body is further provided with a second groove, and the end of the diaphragm and the side away from the valve cover are provided with a second protrusion corresponding to the second groove, and the second protrusion and the second groove are engaged in a fastening fit.

[0016] It is understandable that by setting the second groove and the second protrusion, the connection stability between the main valve body and the diaphragm is improved. At the same time, combined with the first protrusion and the first groove, a labyrinth-type sealing structure is formed between the diaphragm and the main valve body in the radial direction of the main valve body, which further improves the sealing effect between the two.

[0017] In one embodiment, along the axial direction of the main valve body, the thickness of the diaphragm in the radial direction of the main valve body gradually increases from the middle of the diaphragm to the end of the diaphragm.

[0018] It is understandable that by setting the thickness of the diaphragm in the radial direction of the main valve body to gradually increase from the middle to the end of the diaphragm, the middle part of the diaphragm can deform more easily. Therefore, when the pneumatic pinch valve is opened or closed, the diaphragm can deform more quickly in response to changes in the air pressure in the air chamber, thus making the opening or closing action of the pneumatic pinch valve more sensitive.

[0019] In one embodiment, the pneumatic pinch valve further includes an end cap and a flexible jacket, the end cap being connected to the valve cover, and the flexible jacket being positioned between the end cap and the valve cover;

[0020] As the end cap is connected to the valve cover, the flexible jacket is compressed circumferentially and can contract and deform along the radial direction of the main valve body to seal and clamp the external pipeline.

[0021] Understandably, by setting up a flexible jacket, which can contract and deform in the radial direction of the main valve body when compressed, it can clamp the external pipeline to prevent it from rotating. On the other hand, a sealing structure is formed between the flexible jacket and the external pipeline to prevent the fluid medium from leaking from the connection between the flexible jacket and the external pipeline.

[0022] In one embodiment, the end cap has a countersunk hole, and the bottom of the countersunk hole has a through hole that passes through the end cap. The countersunk hole is a threaded hole, and the end cap is threadedly connected to the valve cover through the threaded hole. In the axial direction of the main valve body, a receiving groove is formed between the bottom of the countersunk hole and the end of the valve cover away from the main valve body. The outer peripheral wall of the flexible jacket is provided with a third protrusion, which is confined within the receiving groove.

[0023] In one embodiment, the end of the mounting hole away from the main valve body is formed into a flared opening, the flared opening is configured as a funnel, and the diameter of the flared opening gradually increases from the main valve body to the valve cover; one end of the flexible jacket extends into the flared opening and abuts against the inner wall of the flared opening.

[0024] In one embodiment, the end of the connecting hole facing the valve cover is configured as a constriction, the constriction is configured as a funnel shape, and the diameter of the constriction gradually decreases from the main valve body to the valve cover; the end of the flexible jacket away from the valve cover extends into the constriction and abuts against the inner wall of the constriction.

[0025] This application also provides the following technical solutions:

[0026] A robotic vacuum cleaner includes a pneumatic clamp valve for a robotic vacuum cleaner as described in any of the above embodiments.

[0027] Compared with existing technologies, the pneumatic clamp valve sweeping robot achieves a seal between the valve cover and the main valve body by overlapping both ends of the diaphragm onto the main valve body and then pressing it in using the valve cover. Simultaneously, an annular protrusion is provided on the side of the valve cover facing the diaphragm, forming a line seal between the protrusion and the diaphragm, thereby increasing the sealing force between the valve cover and the diaphragm and improving the sealing effect. In other words, this application utilizes the diaphragm itself to achieve a seal between the diaphragm, the valve cover, and the valve body, thus reducing the need for additional sealing components; and combined with the line seal, the sealing performance between the valve cover and the diaphragm is significantly improved. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the pneumatic clamp valve for the sweeping robot provided in this application.

[0030] Figure 2 This is a front view of the pneumatic clamp valve for a sweeping robot provided in this application.

[0031] Figure 3 For this application Figure 2 Sectional view of AA.

[0032] Figure 4 For this application Figure 3 Enlarged view of point B in the middle.

[0033] Figure 5 This is a schematic diagram of the valve cover provided in this application.

[0034] Figure 6 The front view of the valve cover provided in this application.

[0035] Figure 7 For this application Figure 6 A sectional view of CC.

[0036] Figure 8 Provided for this application Figure 7 Enlarged view of point D in the middle.

[0037] The component labels are as follows:

[0038] 100. Pneumatic clamp valve for sweeping robot; 10. Main valve body; 11. First channel; 12. Air inlet; 13. Air outlet; 14. First protrusion; 15. Second groove; 20. Diaphragm; 21. Second channel; 211. Opening; 22. Air chamber; 23. First groove; 24. Second protrusion; 30. Valve cover; 31. Mounting hole; 32. Protrusion; 33. Flaring; 40. End cap; 41. Countersunk hole; 42. Connecting hole; 43. Receiving groove; 44. Narrowing; 50. Flexible sleeve; 51. Third protrusion. Detailed Implementation

[0039] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0040] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0044] Please see Figures 1 to 8 This application provides a pneumatic clamp valve 100 for a sweeping robot, which is used to control the opening or closing of the pipe in which wastewater is sucked into the wastewater collection chamber in the sweeping robot.

[0045] Specifically, the pneumatic clamp valve 100 for the sweeping robot includes a main valve body 10, a diaphragm 20, and a valve cover 30. The main valve body 10 has a through first channel 11 along its axial direction, and an air inlet 12 and an air outlet 13 are provided on the peripheral sidewall of the main valve body 10. The diaphragm 20 has a through second channel 21 with an opening 211 along the axial direction of the main valve body 10. Along the axial direction of the main valve body 10, the diaphragm 20 passes through the first channel 11, and its two ends overlap the two ends of the main valve body 10 respectively. An air cavity 22 is formed between the diaphragm 20 located in the first channel 11 and the inner wall of the first channel 11. The air inlet 12 and the air outlet 13 are connected to the air inlet 20. The cavity 22 is connected; in response to the air intake of the air inlet 12 or the air outlet 13, the diaphragm 20 can deform with the pressure change in the air cavity 22 to control the opening and closing of the second channel 21; the valve cover 30 is installed at the end of the main valve body 10 along the axial direction of the main valve body 10 and presses the end of the diaphragm 20 onto the end of the main valve body 10, and the valve cover 30 is provided with a mounting hole 31 communicating with the second channel 21, the mounting hole 31 is used to install external pipelines; and the valve cover 30 has an annular protrusion 32 on the side facing the diaphragm 20, the annular protrusion 32 surrounds the circumference of the opening 211 and abuts against the diaphragm 20 in a line seal. Here, by overlapping both ends of the diaphragm 20 onto the main valve body 10 and then pressing it in using the valve cover 30, a seal is achieved between the valve cover 30 and the main valve body 10. Simultaneously, an annular protrusion 32 is provided on the side of the valve cover 30 facing the diaphragm 20, forming a line seal between the protrusion 32 and the diaphragm 20, thereby increasing the sealing force between the valve cover 30 and the diaphragm 20 and improving the sealing effect. In other words, this application utilizes the diaphragm 20 itself to achieve a seal between the diaphragm 20, the valve cover 30, and the main valve body 10, thus reducing the use of additional sealing components; and combined with the line seal, the sealing performance between the valve cover 30 and the diaphragm 20 is significantly improved. Furthermore, by using the line seal between the protrusion 32 and the diaphragm 20, the sealing area can be dynamically adjusted, maintaining an effective seal even with certain installation errors or machining tolerances.

[0046] like Figure 1 and Figure 2 As shown, the valve cover 30 is fixed to the main valve body 10 by screws or bolts, thereby press-fitting the diaphragm 20 onto the main valve body 10 through the valve cover 30. Of course, this is not the only option; the valve cover 30 and the main valve body 10 can also be directly connected by threads.

[0047] like Figure 3 and Figure 4As shown, along the axial direction of the main valve body 10, a first protrusion 14 is provided at the end of the main valve body 10. A first groove 23 corresponding to the first protrusion 14 is formed on the end of the diaphragm 20 away from the valve cover 30. The first protrusion 14 and the first groove 23 are engaged. In this way, by using the engagement of the first protrusion 14 and the first groove 23, the diaphragm 20 is fixed on the main valve body 10, which can improve the stability of the diaphragm 20 on the main valve body 10. Furthermore, since the first groove 23 and the first protrusion 14 are closely fitted together, when the diaphragm 20 is deformed due to the filling of gas in the air chamber 22, the fit between the first groove 23 and the first protrusion 14 can make the air chamber a sealed structure, preventing the filled gas from overflowing from the contact position between the main valve body 10 and the diaphragm 20. At the same time, the contact area between the main valve body 10 and the diaphragm 20 is increased, further improving the sealing effect between the two.

[0048] In one embodiment, along the axial direction of the main valve body 10, a second latching groove 15 is provided at the end of the main valve body 10, and a second protrusion 24 corresponding to the second latching groove 15 is provided on the end of the diaphragm 20 and on the side away from the valve cover 30. The second protrusion 24 and the second latching groove 15 are engaged. In this way, the engagement between the second protrusion 24 and the second latching groove 15 can further improve the stability of the diaphragm 20 fixed on the main valve body 10. At the same time, combined with the first protrusion 14 and the first latching groove 23, a labyrinth seal structure is formed between the diaphragm 20 and the main valve body 10 in the radial direction, which further improves the sealing effect between the two.

[0049] In this embodiment, the first groove 23 is disposed on the diaphragm 20 near the second channel 21, the second protrusion 24 is disposed on the outside of the first groove 23, the first protrusion 14 is disposed on the main valve body 10 near the first channel 11, and the second groove 15 is disposed on the outside of the first protrusion 14. Through the cooperation of the first groove 23 and the first protrusion 14, and the second groove 15 and the second protrusion 24, the diaphragm 20 can be stably fixed on the main valve body 10.

[0050] like Figure 3As shown, along the axial direction of the main valve body 10, the thickness of the diaphragm 20 in the radial direction of the main valve body 10 gradually increases from the middle to the end of the diaphragm 20. This allows the middle part of the diaphragm 20 to deform more easily, thus enabling the diaphragm 20 to deform more quickly in response to changes in air pressure in the air chamber 22 when the pneumatic clamp valve 100 of the robotic vacuum cleaner is opened or closed. This makes the opening or closing action of the pneumatic clamp valve 100 of the robotic vacuum cleaner more sensitive. Meanwhile, because the diaphragm 20 can deform or recover quickly, the pneumatic clamp valve 100 of the sweeping robot will not cause media blockage due to the opening or closing action of the diaphragm 20. For example, when the sweeping robot sucks wastewater into the wastewater collection chamber, the opening and closing of the wastewater collection pipeline is controlled by the pneumatic clamp valve 100 of the sweeping robot. The diaphragm 20 can open or close quickly, and the second channel 21 will not be blocked by impurities (paper towels, pebbles, hair, etc.) in the wastewater due to slow opening speed.

[0051] like Figures 4 to 8 As shown, at least two protrusions 32 are provided on the valve cover 30, and these two protrusions 32 are arranged radially spaced along the main valve body 10. Thus, by providing at least two protrusions 32, at least two sealing lines are formed radially in the main valve body 10, effectively improving the sealing effect between the diaphragm 20 and the valve cover 30. That is, if leakage occurs at the first protrusion 32, the second or third protrusion 32 can seal the gap between the diaphragm 20 and the valve cover 30, effectively preventing media leakage from the gap between the diaphragm 20 and the valve cover 30, thereby improving the sealing performance between the diaphragm 20 and the valve cover 30. Here, the number of protrusions 32 can be two, three, or four.

[0052] Furthermore, the protrusion 32 is disposed on the valve cover 30 and faces the main valve body 10, and the protrusion 32 is inclined relative to the axis of the main valve body 10. The inclination direction of the protrusion 32 is set such that, along the axis of the main valve body 10 and from one end of the valve cover 30 to the main valve body 10, the protrusion 32 gradually inclines away from the axis of the main valve body 10. With this configuration, when the protrusion 32 is fixed to abut against the diaphragm 20 for sealing, the protrusion 32 applies an oblique force to the diaphragm 20 away from the axis of the main valve body 10, and through this force, the diaphragm 20 is stretched, making it taut. This serves two purposes: sealing and fixing the diaphragm 20.

[0053] like Figure 3 and Figure 4As shown, the pneumatic clamping valve 100 for the sweeping robot also includes an end cap 40 and a flexible sleeve 50. The end cap 40 is connected to the valve cover 30, and the flexible sleeve 50 is located between the end cap 40 and the valve cover 30. With the connection between the end cap 40 and the valve cover 30, the flexible sleeve 50 is circumferentially compressed and can contract and deform along the radial direction of the main valve body 10 to seal and clamp the external pipeline. Here, by providing the flexible sleeve 50, and by ensuring that the flexible sleeve 50 can contract and deform along the radial direction of the main valve body 10 under compression, the external pipeline can be stably clamped, preventing rotation. Furthermore, a sealing structure is formed between the flexible sleeve 50 and the external pipeline, preventing leakage of fluid media from the connection between the flexible sleeve 50 and the external pipeline.

[0054] like Figure 3 and Figure 6 As shown, in one embodiment, the end of the mounting hole 31 away from the main valve body 10 forms a flared opening 33, which is funnel-shaped, and the diameter of the flared opening 33 gradually increases from the main valve body 10 to the valve cover 30; one end of the flexible jacket 50 extends into the flared opening 33 and abuts against the inner wall of the flared opening 33. When the flexible jacket 50 is compressed, the flexible jacket 50 moves and deforms radially along the main valve body 10 under the guidance and compression of the inner wall (inclined surface) of the flared opening 33, thereby achieving clamping and sealing of the external pipeline.

[0055] like Figure 3 As shown, in one embodiment, the end cap 40 has a countersunk hole 41, and the bottom of the countersunk hole 41 has a through hole 42 that penetrates the end cap 40. The countersunk hole 41 is a threaded hole, and the end cap 40 is threadedly connected to the valve cover 30 through the threaded hole. In the axial direction of the main valve body 10, a receiving groove 43 is formed between the bottom of the countersunk hole 41 and the end of the valve cover 30 away from the main valve body 10. The outer peripheral wall of the flexible jacket 50 is provided with a third protrusion 51, which is confined within the receiving groove 43. Here, the third protrusion 51 can be an annular shape arranged along the circumference of the flexible jacket 50, or it can be a cylindrical protrusion or other structure arranged at intervals.

[0056] Furthermore, the end of the connecting hole 42 facing the valve cover 30 is configured as a constriction 44, which is funnel-shaped, and the diameter of the constriction 44 gradually decreases from the main valve body 10 to the valve cover 30; the end of the flexible jacket 50 away from the valve cover 30 extends into the constriction 44 and abuts against the inner wall of the constriction 44. When the flexible jacket 50 is compressed, the flexible jacket 50 moves or deforms radially inward along the main valve body 10 under the guidance and compression of the inner wall (inclined surface) of the constriction 44, thereby achieving clamping and sealing of the external pipeline.

[0057] In this embodiment, during assembly, the end cap 40 is fixed to the valve cover 30 by a threaded connection. One end of the external pipeline extends into the mounting hole 31 through the connecting hole 42, thereby being installed on the valve cover 30 and communicating with the second channel 21 through the mounting hole 31. When the end cap 40 is screwed on, the end cap 40 moves toward the valve cover 30, causing the flared end 33 and the constricted end 44 to approach each other. Under the synchronous compression and guidance of the inner walls of the flared end 33 and the constricted end 44, the flexible jacket 50 contracts and deforms along the radial direction of the main valve body 10, thereby clamping and sealing the external pipeline.

[0058] The working process or principle of the pneumatic clamp valve 100 used in a robotic vacuum cleaner is explained below:

[0059] When it is necessary to close the pneumatic clamp valve 100 of the sweeping robot, gas is introduced into the air chamber 22 through the air inlet 12 to increase the air pressure in the air chamber 22. The diaphragm 20 is squeezed and quickly contracts inward, then seals tightly, thereby closing the second channel 21. When it is necessary to open the pneumatic clamp valve 100 of the sweeping robot, the gas in the air chamber 22 is discharged through the air outlet 13, the diaphragm 20 resets, and the second channel 21 opens.

[0060] This application also provides the following technical solutions:

[0061] A robotic vacuum cleaner includes a pneumatic clamp valve 100 for a robotic vacuum cleaner as described in any of the above embodiments.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A pneumatic clamp valve for a robotic vacuum cleaner, used to control the opening or closing of a pipeline, characterized in that, The pneumatic clamp valve (100) for the robotic vacuum cleaner includes at least: The main valve body (10) has a through first channel (11) along the axial direction, and an air inlet (12) and an air outlet (13) are provided on the peripheral sidewall of the main valve body (10). A diaphragm (20) is provided with a second channel (21) through which an opening (211) is formed along the axial direction of the main valve body (10); along the axial direction of the main valve body (10), the diaphragm (20) passes through the first channel (11) and the two ends of the diaphragm (20) are respectively connected to the two ends of the main valve body (10); an air cavity (22) is formed between the diaphragm (20) located in the first channel (11) and the inner wall of the first channel (11); the air inlet (12) and the air outlet (13) are connected to the air cavity (22); wherein, in response to the air intake of the air inlet (12) or the air outlet (13), the diaphragm (20) can deform with the pressure change in the air cavity (22) to control the opening and closing of the second channel (21); The valve cover (30) is installed at the end of the main valve body (10) along the axial direction of the main valve body (10) and presses the end of the diaphragm (20) onto the end of the main valve body (10). The valve cover (30) is provided with a mounting hole (31) communicating with the second channel (21). The mounting hole (31) is used to install an external pipeline. The valve cover (30) has an annular protrusion (32) on one side facing the diaphragm (20). The annular protrusion (32) surrounds the circumference of the opening (211) and abuts against the diaphragm (20) in a line seal.

2. The pneumatic clamp valve for a sweeping robot according to claim 1, characterized in that, The protrusion (32) is provided in at least two parts, and the two protrusions (32) are arranged at a radial distance along the main valve body (10).

3. The pneumatic clamp valve for a sweeping robot according to claim 1, characterized in that, Along the axial direction of the main valve body (10), a first protrusion (14) is provided at the end of the main valve body (10), and a first groove (23) corresponding to the first protrusion (14) is formed on the end of the diaphragm (20) away from the valve cover (30), and the first protrusion (14) and the first groove (23) are fastened together; along the axial direction of the main valve body (10), a second groove (15) is also provided at the end of the main valve body (10), and a second protrusion (24) corresponding to the second groove (15) is provided on the end of the diaphragm (20) away from the valve cover (30), and the second protrusion (24) and the second groove (15) are fastened together.

4. The pneumatic clamp valve for a sweeping robot according to claim 1, characterized in that, The protrusion (32) is inclined relative to the axis of the main valve body (10), and the inclination direction of the protrusion (32) is set as follows: along the axis of the main valve body (10) and from the valve cover (30) to one end of the main valve body (10), the protrusion (32) gradually inclines away from the axis of the main valve body (10).

5. The pneumatic clamp valve for a sweeping robot according to claim 1, characterized in that, Along the axial direction of the main valve body (10), the thickness of the diaphragm (20) in the radial direction of the main valve body (10) gradually increases from the middle of the diaphragm (20) to the end of the diaphragm (20).

6. The pneumatic clamp valve for a sweeping robot according to claim 1, characterized in that, The pneumatic clamp valve (100) for the sweeping robot also includes an end cap (40) and a flexible sleeve (50), the end cap (40) being connected to the valve cover (30), and the flexible sleeve (50) being located between the end cap (40) and the valve cover (30). As the end cap (40) is connected to the valve cover (30), the flexible jacket (50) is circumferentially compressed and can shrink and deform along the radial direction of the main valve body (10) to seal and clamp the external pipeline.

7. The pneumatic clamp valve for a sweeping robot according to claim 6, characterized in that, The end cap (40) is provided with a countersunk hole (41), and the bottom of the countersunk hole (41) is provided with a through hole (42) that passes through the end cap (40). The countersunk hole (41) is configured as a threaded hole. The end cap (40) is threadedly connected to the valve cover (30) through the threaded hole. In the axial direction of the main valve body (10), the bottom of the countersunk hole (41) and the end of the valve cover (30) away from the main valve body (10) form a receiving groove (43). The outer peripheral wall of the flexible jacket (50) is provided with a third protrusion (51), and the third protrusion (51) is limited to the receiving groove (43).

8. The pneumatic clamp valve for a sweeping robot according to claim 7, characterized in that, The mounting hole (31) is formed into a flared opening (33) at the end away from the main valve body (10). The flared opening (33) is funnel-shaped, and the diameter of the flared opening (33) gradually increases from the main valve body (10) to the valve cover (30). One end of the flexible jacket (50) extends into the flared opening (33) and abuts against the inner wall of the flared opening (33).

9. The pneumatic clamp valve for a sweeping robot according to claim 7 or 8, characterized in that, The end of the connecting hole (42) facing the valve cover (30) is configured as a constriction (44), the constriction (44) is configured as a funnel, and the diameter of the constriction (44) gradually decreases from the main valve body (10) to the valve cover (30); the end of the flexible jacket (50) away from the valve cover (30) extends into the constriction (44) and abuts against the inner wall of the constriction (44).

10. A robotic vacuum cleaner, characterized in that, Includes the pneumatic clamp valve (100) for a sweeping robot as described in any one of claims 1-9.

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