Pipeline sealing structure and base station for sweeping robot

Abstract

The utility model relates to the field of ventilation pipelines, in particular to a pipeline sealing structure and a base station for a sweeping robot. The pipeline containing the sealing structure comprises a main pipe (42) and a branch pipe (41) communicated with the main pipe (42) through a main pipe ventilation opening (421). The pipeline sealing structure comprises a frame (1), a sealing module (2) and a driving module (3). The sealing module comprises a push rod (21) slidably mounted on the frame and a valve (22) arranged at the end of the push rod, the push rod is provided with a guide part (23) capable of forming sliding guide fit with the branch pipe, and the valve can move between a communicating position and a sealing position along with sliding of the push rod so as to open or seal the main pipe ventilation opening. The driving module is in transmission connection with the push rod to drive the push rod to slide relative to the frame and move the valve between the communicating position and the sealing position. The guide part and the frame are in sliding guide fit, and the axial movement of the push rod can enable the valve and the ventilation opening of the main pipe to be still attached and sealed when installation deviation exists.

Description

Technical Field

[0001] This utility model relates to the field of ventilation ducts, specifically to a duct sealing structure. Furthermore, it also relates to a base station for a robotic vacuum cleaner using this duct sealing structure. Background Technology

[0002] Piping systems are widely used in industrial production and daily life to transport media such as gases, liquids, or particulate matter. To ensure efficient media transmission within pipelines, the quality of the sealing performance plays a crucial role in the overall performance of the pipeline system. Especially in scenarios involving gas transportation, pipe openings and joints are often weak points prone to leakage.

[0003] Modern pipe sealing technology continues to evolve with the increasing complexity of pipe applications. In smart home devices, such as the base stations of robotic vacuum cleaners or robot vacuums, there are ventilation ducts used to transport media such as dust or hot air. A good sealing structure not only improves device performance but also reduces energy consumption and extends service life. Therefore, how to improve the performance of pipe sealing structures to ensure the reliability of pipe seals has always been a technical problem that needs to be solved.

[0004] In scenarios where there are openings in the pipe wall that need to be frequently opened and closed, existing technologies typically use motor-driven valves as the pipe sealing mechanism. When the opening needs to be opened, the motor moves the valve away from the opening to open it; when the opening needs to be sealed, the motor moves the valve back to the opening to seal it. While motor-driven valves are simple and quick to operate, the problem lies in the high precision required between the motor-driven valve and the opening in the pipe wall. If the motor is misaligned, the valve will not be able to align properly with the opening, resulting in an incomplete seal. This affects airtightness and generates noise. To prevent motor misalignment, the installation precision needs to be significantly increased, which impacts production efficiency and costs.

[0005] Therefore, a low-cost pipe sealing structure is needed that can avoid deviations, completely seal the openings in the pipe, and is also cost-effective. Utility Model Content

[0006] The purpose of this invention is to overcome the problem that minor installation deviations in the existing technology can lead to the inability to completely seal openings on the pipe wall, and to provide a pipe sealing structure that can avoid incomplete sealing caused by installation errors without increasing costs.

[0007] To achieve the above objectives, the first aspect of this utility model provides a pipe sealing structure. The pipe housing the sealing structure includes a main pipe and a branch pipe connected to the main pipe. The main pipe has a main pipe vent that connects to the branch pipe. The pipe sealing structure includes a frame, a sealing module, and a drive module. The sealing module includes a push rod slidably mounted on the frame and a valve disposed at the end of the push rod. The push rod is provided with a guide member capable of forming a sliding guide engagement with the inner circumferential surface of the branch pipe. The valve can move between a connecting position and a sealing position as the push rod slides, so as to open the main pipe vent in the connecting position and form a seal by abutting the main pipe vent in the sealing position. The drive module is mounted on the frame and is drively connected to the sealing module to drive the push rod to slide relative to the frame, thereby moving the valve between the connecting position and the sealing position.

[0008] Preferably, the outer edge of the guide has a protrusion that contacts the inner circumferential surface of the branch pipe to form a sliding guide fit.

[0009] Preferably, the sealing module further includes a first sealing ring sleeved on the push rod. The first sealing ring is disposed between the valve and the guide. When the push rod slides to the valve moving to the sealing position, the first sealing ring is pressed against the pipe wall of the main pipe by the guide to form a seal between the guide and the main pipe.

[0010] Preferably, the sealing module further includes a second sealing ring sleeved on the push rod. The second sealing ring is located on the side of the guide away from the valve. When the push rod moves to the connection position, the second sealing ring can be squeezed onto the frame by the guide to form a seal between the guide and the frame, and to connect the main pipe vent and the branch pipe vent on the branch pipe.

[0011] Preferably, the shape of the valve is adapted to the shape of the main duct vent so as to form a seal when the valve and the main duct vent are in contact.

[0012] Preferably, the drive module further includes a drive component and a drive rod that is throttledly connected to the drive component. One end of the drive rod is throttledly connected to the end of the push rod away from the valve so as to drive the push rod to slide when driven by the drive component.

[0013] Preferably, the drive rod is provided with an interface for connecting a drive component, which is connected to the interface to drive the drive rod to rotate around the interface to drive the push rod.

[0014] Preferably, the drive module further includes an elastic element, one end of which is connected to the frame and the other end of which is connected to the end of the drive rod away from the push rod. The elastic element is stretched when the push rod moves to the sealing position and shortened when the push rod moves to the connecting position, so that when the drive element is not working, it can drive the drive rod to drive the push rod to reset to the connecting position.

[0015] Preferably, the driving component is a stepper motor.

[0016] The second aspect of this utility model provides a base station for a robotic vacuum cleaner, which uses the aforementioned pipe sealing structure.

[0017] The pipe sealing structure provided by this utility model ensures that the main pipe vent is completely sealed even when there is a slight deviation in the installation of the driving component. During use, this pipe sealing structure includes a connection position where the main pipe and branch pipe are connected, and a sealing position where the main pipe vent is sealed. When moving from the sealed position to the connection position, the push rod is driven by the driving module, thereby moving the valve away from the main pipe vent, connecting the branch pipe and the main pipe. When moving from the connection position to the sealed position, the push rod is driven by the driving module, thereby moving the valve closer to the main pipe vent, until the valve and the main pipe vent are in contact and a seal is formed. One end of the push rod away from the main pipe vent is installed in the frame and restricted by the frame to slide axially along the branch pipe; the other end has a guide that abuts against the inner circumferential surface of the branch pipe to form a sliding guide fit. When there is a deviation in the driving module, the frame and guide at both ends of the push rod can guide the movement of the push rod, preventing radial displacement relative to the central axis of the branch pipe, thus ensuring that the valve can be driven to completely contact the main pipe vent to form a seal. By placing the push rod within the frame and adding guide elements, the reliability of the pipe sealing structure can be improved while saving costs, providing a stable seal. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view structural diagram of one embodiment of the present invention;

[0020] Figure 2 yes Figure 1 The embodiment is shown in a front cross-sectional view of the valve when it is in the sealed position, wherein the drive module is not shown.

[0021] Figure 3 This is a three-dimensional structural diagram of one embodiment of the present utility model, wherein the elastic element is not shown;

[0022] Figure 4 This is another three-dimensional structural schematic diagram of an embodiment of the present invention, wherein the elastic element is not shown.

[0023] Explanation of reference numerals in the attached figures

[0024] 1. Frame; 2. Sealing module; 21. Push rod; 22. Valve; 23. Guide; 24. First sealing ring; 25. Second sealing ring; 3. Drive module; 31. Drive component; 32. Drive rod; 33. Elastic component; 41. Branch pipe; 411. Branch pipe vent; 42. Main pipe; 421. Main pipe vent. Detailed Implementation

[0025] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this utility model by way of example, but should not be used to limit the scope of this utility model. This utility model can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0026] These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0027] It should be noted that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0028] Furthermore, the terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well.

[0029] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model depending on the specific circumstances. When a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device.

[0030] All terms used in this invention have the same meaning as understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant art, and not as idealized or highly formalized, unless expressly defined herein.

[0031] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification. To achieve the above objectives, the first aspect of this utility model provides a pipe sealing structure, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the pipe housing the pipe sealing structure includes a main pipe 42 and a branch pipe 41 connected to the main pipe 42. The main pipe 42 forms a main pipe vent 421 communicating with the branch pipe 41. The pipe sealing structure includes a frame 1, a sealing module 2, and a drive module 3. The sealing module 2 includes a push rod 21 slidably mounted on the frame 1 and a valve 22 disposed at the end of the push rod 21. The push rod is provided with a guide 23 that can form a sliding guide engagement with the inner circumferential surface of the branch pipe 41. The valve 22 can move between a communicating position and a sealed position as the push rod 21 slides, so as to open the main pipe vent 421 in the communicating position and form a seal by fitting with the main pipe vent 421 in the sealed position. The drive module 3 is mounted on the frame 1 and is drively connected to the sealing module 2 to drive the push rod 21 to slide relative to the frame 1, thereby moving the valve 22 between the communicating position and the sealed position.

[0032] In the sealed position, push rod 21 slides relative to frame 1 toward main pipe 42, so that valve 22 is fully abutted against and seals main pipe vent 421. In the sealed position, main pipe 42 and valve 22 sealing main pipe vent 421 form a pipe with a complete inner wall to allow air passage, but air cannot pass between main pipe 42 and branch pipe 41. In the connected position, valve 22, driven by push rod 21, fully opens main pipe vent 421 to connect branch pipe 41 and main pipe 42. Branch pipe 41 has branch pipe vent 411, which, in the connected position, can be gas-transmittedly connected to main pipe 42 through main pipe vent 412. Branch pipe vent 411 can be connected to other pipes so that, in the connected position, other gases can be introduced into main pipe 42 through external pipes connected to branch pipe vent 411.

[0033] The pipe sealing structure provided by this utility model ensures that the main pipe vent 421 is completely sealed even when there is a slight deviation in the installation of the drive module 3. During use, this pipe sealing structure includes a connection position where the main pipe 42 and branch pipe 41 are connected, and a sealing position where the main pipe vent 421 is sealed. When the valve 22 moves from the sealed position to the connection position, the push rod 21 is driven by the drive module 3, and the valve 22 moves away from the main pipe vent 421 as the push rod 21 slides, connecting the branch pipe 41 and the main pipe 42. When the valve 22 moves from the connection position to the sealed position, the push rod 21 is driven by the drive module 3, and the valve 22 moves closer to the main pipe vent 421 as the push rod 21 slides, until the valve 22 and the main pipe vent 421 are in contact and sealed. One end of the push rod 21 away from the main pipe vent 421 is installed in the frame 1 and restricted by the frame 1 to slide axially along the branch pipe 41; the other end has a guide 23 that abuts against the inner circumferential surface of the branch pipe 41 to form a sliding guide fit. When the driving direction of the drive component 31 deviates, the frames 1 and guides 23 at both ends of the push rod 21 can guide the movement of the push rod 21, preventing radial displacement of the push rod 21 relative to the central axis of the branch pipe 41. This ensures that the valve 22 can be driven to fully fit with the vent 421 of the main pipe to create a seal. By placing the push rod 21 within the frame 1 and providing the guides 23, the reliability of the pipeline sealing structure can be improved while saving costs, providing a stable seal.

[0034] Preferably, such as Figure 3As shown, the outer edge of the guide 23 has a protrusion that contacts the inner circumferential surface of the branch pipe 41 to form a sliding guide fit. By providing a protrusion on the guide 23, while ensuring that the guide 23 can limit the push rod 21, the contact area between the guide 23 and the inner circumferential surface of the branch pipe 41 is reduced. This reduces the resistance encountered by the push rod 21 when it moves in the branch pipe 41, preventing the guide 23 from getting stuck in the branch pipe and causing the push rod 21 to be unable to move normally to the sealing or closed position.

[0035] In some embodiments, such as Figure 2 and Figure 3 As shown, the sealing module 2 also includes a first sealing ring 24 sleeved on the push rod 21. The first sealing ring 24 is disposed between the valve 22 and the guide member 23. When the push rod 21 slides to the point where the valve 22 moves to the sealing position, the first sealing ring 24 is pressed against the pipe wall of the main pipe 42 by the guide member 23 to form a seal between the guide member 23 and the main pipe 42. When the valve 22 moves to the sealing position, the valve 22 and the main pipe vent 421 are in contact. If the contact is not tight enough, the sealing effect of the main pipe vent 421 will be poor, allowing the airflow in the air supply duct connected to the branch pipe vent 411 to enter the main pipe and generate noise. By setting the first sealing ring 24, the guide 23 can press the first sealing ring 24 onto the pipe wall of the main pipe 42 to form a sealing space around the valve 22 and the main pipe vent 421, thereby sealing the main pipe vent 421 and ensuring the sealing effect of the push rod 21 on the main pipe vent 421 when it is in the sealing position. This ensures that no noise will be generated at the joint between the main pipe vent 421 and the valve 22 due to poor sealing.

[0036] In some embodiments, such as Figure 1 , Figure 2 and Figure 3As shown, the sealing module 2 also includes a second sealing ring 25 sleeved on the push rod 21. The second sealing ring 25 is located on the side of the guide 23 away from the valve 22. When the push rod 21 slides to move the valve 22 to the connected position, the second sealing ring 25 can be pressed onto the frame 1 by the guide 23 to form a seal between the guide 23 and the frame 1, and to connect the main pipe vent 421 and the branch pipe vent 411 on the branch pipe 41. For the frame 1 and the push rod 21, while the frame 1 provides radial constraint to the push rod 21, it also needs to allow the push rod 21 to slide axially along the branch pipe 41 in the limiting structure formed by the branch pipe 41 and the frame 1. Therefore, the part where the frame 1 and the push rod 21 mate will inevitably not be able to fit completely and there will be a gap. When valve 22 moves to the connected position, branch pipe vent 411 and main pipe vent 421 connect and allow airflow, resulting in airflow with a certain velocity within branch pipe 41. In the connected state, the airflow will flow out through the aforementioned gap, reducing ventilation efficiency and generating additional noise. By setting a second sealing ring 25, the guide 23 can press the second sealing ring 25 onto the frame 1 to form a seal at the contact point between the push rod 21 and the frame 1. At this time, the airflow entering branch pipe 41 from branch pipe vent 411 can all flow to main pipe 42 through main pipe vent 421, without flowing out through the aforementioned gap. This ensures both the ventilation efficiency of branch pipe 41 and main pipe 42 in the connected position and prevents noise generation due to airflow in the aforementioned gap in the connected position.

[0037] Preferably, such as Figure 2 and Figure 3 As shown, the shape of valve 22 is adapted to the shape of the main duct vent 421. For example, the end face of valve 22 is set to an arc shape that matches the curvature of the inner wall of main duct 42, so as to form a seal when valve 22 is in contact with main duct vent 421. The arc-shaped end of valve 22, when push rod 21 moves to the sealing position, can form a pipe with a complete inner circumferential surface with main duct 42 while sealing main duct vent 421, thereby allowing airflow to pass smoothly through main duct 42, reducing airflow energy loss and improving airflow efficiency. At the same time, compared to a shape that would create protrusions or depressions on the inner circumferential surface of main duct 42 when in the sealed position, valve 22, whose shape is adapted to main duct vent 421, can reduce noise generated during airflow.

[0038] Preferably, such as Figure 1 , Figure 3 and Figure 4As shown, the drive module 3 also includes a drive member 31 and a drive rod 32 pulverically connected to the drive member 31. One end of the drive rod 32 is pulverically connected to the end of the push rod 21 away from the valve 22, so that when driven by the drive member 31, it drives the push rod 21 to slide, thereby moving the valve 22 to a sealed position or a connected position. The end of the drive rod 32 connected to the push rod 21 can be configured in any shape that can connect to or cooperate with the push rod 21 to drive the push rod 21 to slide axially within the branch pipe 41. For example, the drive rod 32 can be configured with a hook-shaped end that can cooperate with the push rod 21 and the end connected to it in a radially arranged rod. Through the drive member 31 and the drive rod 32, the push rod 21 can be provided with the power to slide axially within the branch pipe 41, thereby moving the valve 22 to a sealed position or a connected position.

[0039] The drive element 31 can be any drive device capable of moving the valve 22 to a sealing position or a connecting position by driving the drive rod 32 to drive the push rod 21. Preferably, such as Figure 1 , Figure 3 and Figure 4 As shown, the driving component 31 is a stepper motor. The stepper motor has a large output torque at low speed and has a relatively low cost, so it can fix the valve 22 in the sealed position or the connected position with greater force, so as to avoid the pressure difference generated by the airflow in the main pipe 42 and the branch pipe 41 from affecting the sealing effect, while also saving the cost of this pipeline sealing structure.

[0040] Preferably, such as Figure 3 and Figure 4 As shown, the drive rod 32 is provided with an interface for connecting the drive component 31. The drive component 31 is connected to this interface to drive the drive rod 32 to rotate around the interface of the drive component 31 to drive the push rod 21. Compared with other forms of drive components 31 that drive the drive rod 32, motors with rotating shafts have simpler structures, lower costs, and lower failure rates. Therefore, using a drive component 31 that can drive the drive rod 32 to rotate makes this pipe sealing structure more cost-effective and has a lower failure rate.

[0041] Preferably, such as Figure 1As shown, the drive module 3 also includes an elastic element 33. One end of the elastic element 33 is connected to the frame 1, and the other end is connected to the end of the drive rod 32 away from the push rod 21. The elastic element 33 is stretched when the push rod 21 moves to the sealing position and shortened when the push rod 21 moves to the connecting position. This allows the drive rod 32 to drive the push rod 21, thereby resetting the valve to the connecting position, when the drive element 31 is not working. The elastic element 33 can be any elastic element that can be pulled open by the drive element 31 and can reset the valve 22 to the connecting position by tension when the drive element 31 is not working, such as a tension spring. By using the elastic element 33, the valve 22 can be held in the connecting position for a long time when the drive element 31 is not working, thereby greatly reducing the working time of the drive element 31, avoiding failure of the drive element 31 due to long-term operation, and thus making the pipeline sealing structure highly stable.

[0042] The second aspect of this utility model provides a base station for a robotic vacuum cleaner, which includes the aforementioned pipe sealing structure. The base station is an important component of the robotic vacuum cleaner, serving multiple functions such as charging and dust collection. During operation, the robotic vacuum cleaner automatically cleans a designated area according to a pre-set route. During cleaning, the robotic vacuum cleaner collects hair, dust, and other debris into its internal dustbin. This dustbin fills up after a period of use; if not emptied, the collected debris cannot enter the dustbin, resulting in ineffective cleaning and failing to achieve the desired cleaning effect. Therefore, when the dustbin is full, the robotic vacuum cleaner automatically returns to the base station to empty it according to its program.

[0043] In order to empty the dust box, the base station is equipped with a dust collection pipe for collecting dust. When the robot vacuum returns to the base station because the dust box is full, the dust collection pipe in the base station can connect with the dust box of the robot vacuum and generate negative pressure to suck the dirt collected in the dust box into the dust collection pipe and then into the dust bag in the base station.

[0044] During operation, robotic vacuum cleaners may collect dirt containing a certain amount of moisture. Therefore, some base stations are equipped with hot air ducts connected to the dust collection pipes to dry the dust bags containing the dirt. Simultaneously, by connecting the dust collection pipes to other pipes, hot air can be conducted through the dust collection pipes to other parts and dry other components, such as the cleaning parts on the robotic vacuum cleaner that have been pre-soaked. Using hot air ducts for drying reduces the weight of the dirt in the dust bags by evaporating moisture, and also creates a sufficiently dry environment to reduce bacterial growth within the dirt. This prevents contamination in the dust bags and dust boxes of both the base station and the robotic vacuum cleaner, improving the cleaning effectiveness of both.

[0045] Since the dust collection duct is used both to suck up dirt during the dust collection process and to introduce hot air during the drying process, it is usually used as the main duct and the hot air duct as the branch duct connected to it. A pipe sealing structure is installed in the hot air duct to control whether the dust collection duct is connected to the hot air duct, thereby controlling whether the dust collection duct is used for dust collection or drying.

[0046] Therefore, it is evident that the sealing performance of this pipe sealing structure is crucial to the effectiveness of the dust collection and drying processes. If the sealing performance of the pipe sealing structure is poor and cannot completely seal the opening between the dust collection pipe and the hot air pipe, dirt will enter the hot air pipe or even the hot air blower along the gaps during the dust collection process, causing the hot air blower to malfunction. At the same time, the airflow flowing in from the gaps will generate noise during the dust collection and drying processes, thereby reducing the user experience of the robot vacuum cleaner and the base station. The base station for robot vacuum cleaners provided by this utility model includes the aforementioned pipe sealing structure, which can provide a stable seal for the dust collection pipe and the hot air pipe, thereby making the dust collection and drying processes of the base station for robot vacuum cleaners more stable and quieter.

[0047] Specifically, in this base station for the robotic vacuum cleaner, the main pipe 42 is configured as a dust collection pipe. After the dustbin in the robotic vacuum cleaner collects and fills up, and the robot stops at the base station, the main pipe 42 connects to the robot's dustbin and sucks the collected dust and other dirt into the base station's dust bag. The branch pipe 41 is configured to connect to a hot air duct equipped with a heating module via a branch pipe vent 411, serving as an extension of the hot air duct. After the main pipe 42 has finished collecting dust, hot air is passed through the main pipe vent 421 to the main pipe 42, and then through the main pipe 42 to the dust bag to dry the dust bag and the dirt sucked in during the original dust collection process. During dust collection, the drive component 31 drives the drive rod 32, which in turn drives the push rod 21 to slide within the branch pipe 41. This moves the valve 22 to a sealing position, completely sealing the main pipe vent 421. This ensures that the negative pressure generated within the main pipe 42 meets the dust collection requirements and reduces airflow noise. During dust bag drying, the drive component 31 stops working, and the elastic component 33 contracts. The elastic force generated during contraction drives the drive rod 32, which in turn drives the push rod 21, moving the valve 22 to a connecting position. The second sealing ring 25 seals the connection between the push rod 21 and the frame 1, reducing hot air leakage and airflow noise while ensuring the connection between the hot air duct connected to the branch pipe vent 411 and the main pipe 42. This allows the robot to complete the tasks of drying the dust bag and other components. The base station for a sweeping robot using the pipe sealing structure provided by this invention has the advantages of low failure rate of the drive component 31, low cost, low pipe airflow noise, and good pipe sealing performance.

[0048] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0049] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments or equivalent substitutions can be made to some technical features without departing from the scope and spirit of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any manner.

Claims

1. A pipe sealing structure, the pipe comprising a main pipe (42) and a branch pipe (41) connected to the main pipe (42), the main pipe (42) having a main pipe vent (421) communicating with the branch pipe (41), characterized in that, The pipeline sealing structure includes: Framework (1); A sealing module (2) includes a push rod (21) slidably mounted on the frame (1) and a valve (22) disposed at the end of the push rod (21). The push rod (21) is provided with a guide (23) that can form a sliding guide engagement with the inner circumferential surface of the branch pipe (41). The valve (22) can move between a communication position and a sealing position as the push rod (21) slides, so as to open the main pipe vent (421) in the communication position and to form a seal by fitting with the main pipe vent (421) in the sealing position. A drive module (3) is connected to the sealing module (2) and is capable of driving the push rod (21) to slide relative to the frame (1) to move the valve (22) between the communicating position and the sealing position.

2. The pipe sealing structure according to claim 1, characterized in that, The outer edge of the guide (23) has a protrusion that contacts the inner circumferential surface of the branch pipe (41) to form a sliding guide fit.

3. The pipe sealing structure according to claim 1, characterized in that, The sealing module (2) further includes a first sealing ring (24) sleeved on the push rod (21). The first sealing ring (24) is disposed between the valve (22) and the guide (23). When the push rod (21) slides to the point that the valve (22) moves to the sealing position, the first sealing ring (24) is pressed by the guide (23) onto the wall of the main pipe (42) to form a seal between the guide (23) and the main pipe (42).

4. The pipe sealing structure according to claim 1, characterized in that, The sealing module (2) further includes a second sealing ring (25) sleeved on the push rod (21). The second sealing ring (25) is located on the side of the guide (23) away from the valve (22). When the push rod (21) moves to the communication position, the second sealing ring (25) can be squeezed onto the frame (1) by the guide (23) to form a seal between the guide (23) and the frame (1) and to connect the main pipe vent (421) and the branch pipe vent (411) on the branch pipe (41).

5. The pipe sealing structure according to claim 1, characterized in that, The shape of the valve (22) is adapted to the shape of the main duct vent (421) to form a seal when the valve (22) and the main duct vent (421) are in contact.

6. The pipe sealing structure according to claim 1, characterized in that, The drive module (3) further includes a drive member (31) and a drive rod (32) that is throttledly connected to the drive member (31). One end of the drive rod (32) is throttledly connected to the end of the push rod (21) away from the valve (22) so that the push rod (21) can slide when driven by the drive member (31).

7. The pipe sealing structure according to claim 6, characterized in that, The drive rod (32) is provided with an interface for connecting the drive member (31). The drive member (31) is connected to the interface to drive the drive rod (32) to rotate around the interface to drive the push rod (21).

8. The pipe sealing structure according to claim 6, characterized in that, The drive module (3) further includes an elastic element (33), one end of which is connected to the frame (1) and the other end is connected to the end of the drive rod (32) away from the push rod (21). The elastic element (33) is stretched when the push rod (21) moves to the sealing position and shortened when the push rod (21) moves to the communication position, so that when the drive element (31) is not working, it drives the drive rod (32) to drive the push rod (21) to return to the communication position.

9. The pipe sealing structure according to claim 6, characterized in that, The driving component (31) is a stepper motor.

10. A base station for a robotic vacuum cleaner, characterized in that, Includes the pipe sealing structure as described in any one of claims 1-9.

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