Tea tray drainage fitting, tea tray device, clogging method

Abstract

The present application provides a tea tray drainage accessory, which comprises a hollow elastic ball and a first drainage channel and a second drainage channel, one end of the first drainage channel is communicated with a water inlet end of the hollow elastic ball, one end of the second drainage channel is communicated with a water outlet end of the hollow elastic ball, the drainage accessory further comprises a vent provided with a valve assembly, the vent provided with the valve assembly is arranged on the hollow elastic ball or the first drainage channel or the second drainage channel; when the drainage channel at one end of the elastic ball is blocked, the drainage channel at the other end of the elastic ball which is not blocked can be manually closed, then the elastic ball is squeezed, the valve assembly closes the vent, a large pressure impact is generated in the ball to impact the blockage, the squeezed elastic ball is released, the valve assembly opens the vent, air outside the ball is sucked into the ball through the vent to restore the ball so as to squeeze the elastic ball again, the continuous squeezing-releasing of the elastic ball can be realized without the coordination of the left and right hands, and the blockage can be removed for multiple times until the blockage is discharged.

Description

Technical Field

[0001] This invention relates to the field of tea tray drainage, and more particularly to tea tray drainage accessories, tea tray devices, and methods for clearing blockages. Background Technology

[0002] Traditional tea tray drainage accessories typically consist of a hollow elastic sphere and two drain hoses, each connected to the hollow elastic sphere via a connector. During drainage, when the drainage channel becomes blocked, positive and negative pressure is generated by squeezing the hollow elastic sphere to clear the blockage. However, because the unblocked drainage channel at the other end of the hollow elastic sphere is open, squeezing and releasing the sphere is not always effective. To achieve better results, when one end of the hollow elastic sphere is blocked, the drain hose at the other end can be pinched or folded to close the unblocked channel. Then, squeezing the sphere generates positive pressure to dislodge the blockage. However, often a single squeeze is insufficient to remove the blockage, requiring multiple squeezes. Only a hollow elastic ball can achieve the purpose of unblocking. However, at this time, the drainage channels at both ends of the hollow elastic ball are in a closed state, which causes the squeezed hollow elastic ball to be unable to take in air and rebound, or the rebounded hollow elastic ball will suck back the pushed-away blockage. At this time, it is necessary to loosen the drainage hose at the tightly squeezed or folded end to allow the hollow elastic ball to take in air and rebound, so that the hollow elastic ball can be squeezed again. However, such operation requires coordination of both hands, which is inconvenient for most people and makes it difficult to make a continuous and effective action of squeezing the hollow elastic ball to unblock.

[0003] Existing technology also includes a tea tray drainage accessory with a hollow elastic sphere and ventilation holes. The ventilation holes allow the interior of the hollow elastic sphere to communicate with the atmosphere, making drainage smoother. However, squeezing the hollow elastic sphere will cause the air and water inside the sphere to spray out through the ventilation holes, and it will basically lose or weaken its drainage function. Summary of the Invention

[0004] This invention aims to solve the problem of difficult drainage channels in existing tea trays by providing a drainage accessory for tea trays. By continuously squeezing a hollow elastic ball, the drainage channel is continuously pressurized, which can more conveniently and effectively discharge or disperse blockages, thereby achieving the purpose of clearing blockages.

[0005] To address the aforementioned technical problems, this invention provides a tea tray drainage accessory, comprising a hollow elastic sphere and a first drainage channel and a second drainage channel. One end of the first drainage channel is connected to the water inlet of the hollow elastic sphere, and one end of the second drainage channel is connected to the water outlet of the hollow elastic sphere. The drainage accessory also includes a vent hole equipped with a valve assembly, wherein the vent hole with the valve assembly is disposed in the hollow elastic sphere, the first drainage channel, or the second drainage channel; the vent hole with the valve assembly is normally open or normally closed.

[0006] When the vent hole equipped with the valve assembly is normally open: the vent hole is open in the natural state; when the hollow elastic ball is squeezed, the valve assembly closes the vent hole; when the squeezed hollow elastic ball rebounds and returns to its original state, the valve assembly opens the vent hole.

[0007] When the vent hole equipped with the valve assembly is normally closed: in the natural state, the valve assembly closes the vent hole; when the hollow elastic ball is squeezed, the vent hole equipped with the valve assembly remains closed; when the hollow elastic ball is squeezed and then rebounds to its original shape, and a certain degree of negative pressure is reached inside the ball, the valve assembly opens the vent hole.

[0008] In a preferred embodiment, the vent hole with the valve assembly is normally open, and the vent hole is in the open state under natural conditions.

[0009] In a preferred embodiment, the vent includes an air passage, and the valve assembly includes a lightweight ball and a support member, the support member allowing air to pass through; the support member is placed in the air passage and supports the lightweight ball; as the hollow elastic ball is compressed, the lightweight ball closes the vent under the action of air pressure or water flow;

[0010] The lightweight sphere can float on water, and the vent can be closed as the water level inside the hollow elastic sphere rises.

[0011] In a preferred embodiment, the vent with the valve assembly is normally closed, and the vent is closed under natural conditions.

[0012] In a preferred embodiment, the vent includes an air passage, and the valve assembly is a one-way valve disposed within the air passage.

[0013] In a preferred embodiment, the first drainage channel includes a first drainage pipe and a first pipe connector, and one end of the first drainage pipe is connected to the water inlet end of the hollow elastic sphere through the first pipe connector;

[0014] The second drainage channel includes a second drainage pipe and a second pipe joint, with one end of the second drainage pipe connected to the water outlet of the hollow elastic sphere through the second pipe joint;

[0015] The vent hole equipped with the valve assembly is located at the first pipe joint, the second pipe joint, the first drain pipe, or the second drain pipe.

[0016] In a preferred embodiment, the first drainage channel and the second drainage channel are provided with switch valves, which are installed on the corresponding pipe joints or drainage pipes.

[0017] The present invention also provides a tea tray drainage device, including a hollow elastic sphere and pipe joints at both ends of the hollow elastic sphere; the drainage device also includes a vent hole with a valve assembly, the vent hole with the valve assembly being disposed in the hollow elastic sphere or the pipe joint; the vent hole with the valve assembly is normally open or normally closed.

[0018] When the vent hole equipped with the valve assembly is normally open: the vent hole is open in the natural state; when the hollow elastic ball is squeezed, the valve assembly closes the vent hole; when the squeezed hollow elastic ball rebounds and returns to its original state, the valve assembly opens the vent hole.

[0019] When the vent hole equipped with the valve assembly is normally closed: in the natural state, the valve assembly closes the vent hole; when the hollow elastic ball is squeezed, the vent hole equipped with the valve assembly remains closed; when the hollow elastic ball is squeezed and then rebounds to its original shape, and a certain degree of negative pressure is reached inside the ball, the valve assembly opens the vent hole.

[0020] The present invention also provides a tea tray device, including a tea tray with a drain outlet, and a tea tray drainage accessory; one end of the first drainage channel is connected to the water inlet of the hollow elastic sphere, and the other end is connected to the drain outlet of the tea tray.

[0021] The present invention also provides a method for clearing blockages in a tea tray device, the tea tray device including the aforementioned tea tray drainage fitting; the method for clearing blockages is as follows:

[0022] Step 1: When the first or second drainage channel is blocked, manually block the unblocked drainage channel at the other end of the hollow elastic sphere, then squeeze the hollow elastic sphere. Under positive pressure, the valve assembly closes the vent, causing a large pressure to impact the blockage inside the hollow elastic sphere. Step 2: Release the squeezed hollow elastic sphere. The air pressure inside the sphere is lower than the outside pressure. Under the action of the external air pressure, the valve assembly opens the vent, and air from outside the sphere is drawn into the sphere through the vent, causing the sphere to spring back to its original shape.

[0023] Step 3: Repeat steps 1 and 2 until the blockage in the drainage channel is discharged or flushed away.

[0024] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0025] 1. By providing a vent hole with a valve assembly on the drainage fitting, the vent hole can be closed when the hollow elastic ball is compressed or when the water level inside the ball reaches the vent hole. This prevents water from overflowing from the vent hole. Furthermore, when the first and second drainage channels are blocked by tea leaves or foreign objects, compressing the hollow elastic ball prevents water and air from leaking out through the vent hole, and generates significant pressure to clear the blockage.

[0026] 2. By setting a vent hole with a valve assembly on the drainage fitting, when the drainage channel at one end of the hollow elastic ball is blocked, in order to achieve a better unblocking effect, the unblocked drainage channel at the other end can be manually blocked and the hollow elastic ball can be squeezed to generate greater pressure inside the hollow elastic ball to impact the blockage. When the squeezed hollow elastic ball is released, air from outside the ball is drawn into the ball through the vent hole, causing the ball to bounce back and recover, so that the hollow elastic ball can be squeezed again. The hollow elastic ball can be squeezed and released repeatedly without the need for coordination between the left and right hands to unblock until the blockage is discharged or dispersed. Attached Figure Description

[0027] Figure 1 The first embodiment shows a cross-sectional view of the overall structure of the drainage fitting and a top view of the support component.

[0028] Figure 2 This is a schematic diagram of the air path and the closure of the vent after the hollow elastic sphere is compressed in the first embodiment;

[0029] Figure 3 This is a cross-sectional view of the overall structure of the drainage fitting and a top view of the support component in the second embodiment;

[0030] Figure 4 This is a schematic diagram of the air path and vent closure after the hollow elastic sphere is compressed in the second embodiment;

[0031] Figure 5 This is a cross-sectional view of the overall structure of the drainage fittings in the third embodiment.

[0032] Figure 6 This is a schematic diagram showing the opening of the vent hole of the hollow elastic sphere under negative pressure in the third embodiment.

[0033] Explanation of reference numerals in the attached drawings: 1. Hollow elastic sphere; 2. Vent hole; 21. Air passage; 22. Lightweight sphere; 23. Support component; 24. One-way air valve; 3. First drainage channel; 31. First drainage pipe; 32. First pipe joint; 4. Second drainage channel; 41. Second drainage pipe; 42. Second pipe joint. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0037] First embodiment, reference Figure 1-2 .

[0038] This embodiment provides a tea tray drainage accessory for draining water from a tea tray device. The accessory includes a hollow elastic sphere 1, a first drainage channel 3, and a second drainage channel 4. One end of the first drainage channel 3 is connected to the water inlet of the hollow elastic sphere 1, and one end of the second drainage channel 4 is connected to the water outlet of the hollow elastic sphere 1. The tea tray device includes a tea tray with a drain outlet and a drainage device, which includes a wastewater tank or a sewer. One end of the first drainage channel 3 is connected to the water inlet of the hollow elastic sphere 1, and the other end is connected to the drain outlet of the tea tray; one end of the second drainage channel 4 is connected to the water outlet of the hollow elastic sphere 1, and the other end is connected to a wastewater tank or a sewer. The first drain pipe 31 and the second drain pipe 41 are drain hoses. The hollow elastic sphere 1 can be integrally set with the drain hose, or one end of the first drain pipe 31 can be connected to the water inlet end of the hollow elastic sphere 1 through the first pipe joint 32, and one end of the second drain pipe 41 can be connected to the water outlet end of the hollow elastic sphere 1 through the second pipe joint 42.

[0039] The tea tray drainage fitting is provided with a vent 2 equipped with a valve assembly at the first pipe joint 32 of the first drainage channel 3 (e.g., Figure 1 The vent 2 with the valve assembly is normally open, and is in the open state under natural conditions.

[0040] In this embodiment, the vent 2 with valve assembly is normally open. When the tea tray is draining normally, the vent 2 with valve assembly enables the interior of the hollow elastic sphere 1 and the drainage channel to communicate with the atmosphere, making the drainage smoother.

[0041] The vent 2 equipped with the valve assembly is designed so that when the hollow elastic sphere 1 is compressed, the vent 2 is closed and no air is released; when the hollow elastic sphere 1 is filled with water up to the vent 2, the vent 2 is closed and no water leaks. When the hollow elastic sphere 1 is compressed, neither water nor air inside the sphere will overflow through the vent 2.

[0042] Specifically, the structure of the vent 2 with the valve assembly is configured as follows: the vent 2 includes an air passage 21, and the valve assembly includes a lightweight sphere 22 and a support member 23. The support member 23 allows air or water to pass through. The support member 23 is placed inside the air passage 21 and supports the lightweight sphere 22. The lightweight sphere 22 can float on water. When the water inside the hollow elastic sphere 1 fills the air passage 21, the water can lift the lightweight sphere 22 and close the vent 2, achieving the effect of preventing water overflow.

[0043] During normal drainage, the lightweight sphere 22 rests on the support 23 (e.g., Figure 1Open the vent 2 to allow the interior of the hollow elastic sphere 1 to communicate with the atmosphere, making drainage smoother. During drainage, if the first drainage channel 3 or the second drainage channel 4 becomes clogged with tea residue or foreign objects, to achieve better drainage, the other end of the hollow elastic sphere 1 (the unblocked drainage hose at the other end of the hollow elastic sphere 1) can be manually blocked (by pinching or folding it). Then, squeeze the hollow elastic sphere 1; the lightweight sphere 22, under positive pressure, closes the vent 2 (e.g., Figure 2 The hollow elastic sphere 1 prevents water or air from leaking through the vent 2, creating significant pressure within it to dislodge the blockage. When the compressed hollow elastic sphere 1 is released, the internal air pressure is lower than the external pressure. Under the influence of external air pressure or gravity, the lightweight sphere 22 opens the vent 2, allowing air from outside to be drawn into the sphere, causing it to spring back and revert to its original shape. This allows for repeated compression and release of the hollow elastic sphere 1 without the need for coordinated left and right hand movements, effectively clearing the blockage until it is expelled or dispersed. Compared to traditional tea tray drainage accessories, this method is more convenient and effective, and its simple structure facilitates production.

[0044] To achieve better unblocking force and ensure that the generated positive pressure acts on tea residue and foreign objects, and to prevent water or air leakage from the unblocked end of the drainage channel, the drainage channel at the unblocked end needs to be sealed when squeezing the hollow elastic sphere 1 to prevent water or air from passing through. This can be done by manually bending the drainage hose at the unblocked end, or by installing switch valves on both the first drainage channel 3 and the second drainage channel 4 to close the drainage channel at the unblocked end during the unblocking operation.

[0045] Second embodiment, reference Figure 3-4 .

[0046] A different configuration is provided than that of the vent 2 with valve assembly in the first embodiment.

[0047] In this embodiment, based on the structure of the vent 2 with valve assembly in the first embodiment, the vent 2 with valve assembly is selected to be set on the hollow elastic sphere 1. Under the premise of setting a normally open vent, when the water in the hollow elastic sphere 1 fills the air passage 21, the water can lift the lightweight sphere 22 to close the vent 2, thereby achieving the effect of preventing water overflow.

[0048] During normal drainage, the lightweight sphere 22 rests on the support 23 (e.g., Figure 3Open the vent 2 to allow the interior of the hollow elastic sphere 1 and the drainage channel to communicate with the atmosphere, making drainage smoother. During drainage, if the first drainage channel 3 or the second drainage channel 4 becomes blocked by tea residue or foreign objects, the other end of the hollow elastic sphere 1 (the unblocked drainage hose at the other end of the hollow elastic sphere 1) can be manually blocked (by pinching or folding it). Then, squeeze the hollow elastic sphere 1 to create a large positive pressure inside, impacting the tea residue and foreign objects to clear the blockage. As the hollow elastic sphere 1 is squeezed, the lightweight sphere 22 closes the vent 2 under the positive pressure (e.g., Figure 4 This prevents water or air inside the hollow elastic sphere 1 from leaking out through the vent 2 and increases the pressure. When the squeezed hollow elastic sphere 1 is released, the air pressure inside the sphere is lower than that outside. Under the action of external air pressure or gravity, the lightweight sphere 22 opens the vent 2, and air from outside the sphere is drawn into the sphere through the vent 2, causing the sphere to bounce back and recover, so that the hollow elastic sphere 1 can be squeezed again. This allows for continuous and repeated squeezing and releasing of the hollow elastic sphere 1 to effectively clear blockages without the need for coordination between the left and right hands, until the blockage is discharged or dispersed.

[0049] Third embodiment, reference Figure 5-6 .

[0050] This embodiment provides a tea tray drainage accessory for draining water from a tea tray device. The accessory includes a hollow elastic sphere 1, a first drainage channel 3, and a second drainage channel 4. One end of the first drainage channel 3 is connected to the water inlet of the hollow elastic sphere 1, and one end of the second drainage channel 4 is connected to the water outlet of the hollow elastic sphere 1. The tea tray device includes a tea tray with a drain outlet and a drainage device, which includes a wastewater tank or a sewer. One end of the first drainage channel 3 is connected to the water inlet of the hollow elastic sphere 1, and the other end is connected to the drain outlet of the tea tray; one end of the second drainage channel 4 is connected to the water outlet of the hollow elastic sphere 1, and the other end is connected to a wastewater tank or a sewer. The first drain pipe 31 and the second drain pipe 41 are drain hoses. The hollow elastic sphere 1 can be integrally set with the drain hose, or one end of the first drain pipe 31 can be connected to the water inlet end of the hollow elastic sphere 1 through the first pipe joint 32, and one end of the second drain pipe 41 can be connected to the water outlet end of the hollow elastic sphere 1 through the second pipe joint 42.

[0051] The tea tray drainage fitting is provided with a vent 2 equipped with a valve assembly at the first pipe joint 32 of the first drainage channel 3 (e.g., Figure 5The vent 2 equipped with the valve assembly is normally closed. Under normal conditions, the valve assembly closes the vent 2. When the hollow elastic ball 1 is squeezed, the vent 2 is also closed. When the hollow elastic ball 1 is released after being squeezed, the hollow elastic ball 1 rebounds and returns to its original shape. When the negative pressure inside the ball reaches a certain level, the valve assembly opens the vent 2, allowing air from outside the ball to be drawn into the ball through the vent 2.

[0052] Specifically, the vent 2 includes an air passage 21, and the valve assembly is a one-way valve 24, which is located at the air inlet of the air passage 21. During normal drainage, the vent 2 is closed (e.g., Figure 5 During drainage, if the first drainage channel 3 or the second drainage channel 4 becomes blocked by tea residue or foreign objects, the unblocked end of the drainage hose is manually pinched or folded to close the unblocked drainage channel. Then, the hollow elastic ball 1 is squeezed, while the vent 2 remains closed. Water or air inside the hollow elastic ball 1 does not leak through the vent 2, creating significant pressure within the hollow elastic ball 1 to impact and clear the tea residue and foreign objects. When the squeezed hollow elastic ball 1 is released, the one-way valve 24 opens under the negative pressure inside the hollow elastic ball 1 (e.g., ...). Figure 6 Air from outside the sphere is drawn into the sphere through the vent 2, causing the sphere to bounce back and be squeezed again. This allows for continuous squeezing of the hollow elastic sphere 1 without the need for coordination between the left and right hands, enabling multiple unblocking operations until the blockage is expelled or dispersed. This method is more convenient and effective than traditional tea tray drainage accessories.

[0053] The above description is merely a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention by those skilled in the art within the scope of the technology disclosed in the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A tea tray drainage accessory, comprising a hollow elastic sphere and a first drainage channel and a second drainage channel, wherein one end of the first drainage channel is connected to the water inlet end of the hollow elastic sphere, and one end of the second drainage channel is connected to the water outlet end of the hollow elastic sphere, characterized in that: The drainage fitting also includes a vent with a valve assembly, wherein the vent with the valve assembly is disposed in the hollow elastic sphere or the first drainage channel or the second drainage channel; the vent with the valve assembly is normally open or normally closed; When the vent hole equipped with the valve assembly is normally open: the vent hole is open in the natural state; when the hollow elastic ball is squeezed, the valve assembly closes the vent hole; when the squeezed hollow elastic ball rebounds and returns to its original state, the valve assembly opens the vent hole. When the vent hole equipped with the valve assembly is normally closed: in the natural state, the valve assembly closes the vent hole; when the hollow elastic ball is squeezed, the vent hole equipped with the valve assembly remains closed; when the hollow elastic ball is squeezed and then rebounds to its original shape, and a certain degree of negative pressure is reached inside the ball, the valve assembly opens the vent hole.

2. The tea tray drainage fitting according to claim 1, characterized in that: The vent with valve assembly is normally open, and is in the open state under natural conditions.

3. The tea tray drainage fitting according to claim 2, characterized in that: The vent includes an air passage, and the valve assembly includes a lightweight sphere and a support member, the support member allowing air or water to pass through; the support member is placed in the air passage and supports the lightweight sphere; as the hollow elastic sphere is compressed, the lightweight sphere closes the vent under the action of air pressure or water flow. The lightweight sphere can float on water, and the vent can be closed as the water level inside the hollow elastic sphere rises.

4. The tea tray drainage fitting according to claim 1, characterized in that: The vent with valve assembly is normally closed, and is in a closed state under natural conditions.

5. The tea tray drainage fitting according to claim 4, characterized in that: The vent includes an air passage, and the valve assembly is a one-way valve, which is disposed within the air passage.

6. The tea tray drainage fitting according to any one of claims 1-5, characterized in that: The first drainage channel includes a first drainage pipe and a first pipe joint, with one end of the first drainage pipe connected to the water inlet of the hollow elastic sphere through the first pipe joint; The second drainage channel includes a second drainage pipe and a second pipe joint, with one end of the second drainage pipe connected to the water outlet of the hollow elastic sphere through the second pipe joint; The vent hole equipped with the valve assembly is located at the first pipe joint, the second pipe joint, the first drain pipe, or the second drain pipe.

7. The tea tray drainage fitting according to claim 6, characterized in that: The first drainage channel and the second drainage channel are equipped with switch valves, which are installed on the corresponding pipe joints or drainage pipes.

8. A tea tray drainage fitting, characterized in that: The device includes a hollow elastic sphere and pipe fittings at both ends of the hollow elastic sphere; characterized in that: the drainage fitting further includes a vent hole equipped with a valve assembly, the vent hole equipped with the valve assembly being disposed in the hollow elastic sphere or the pipe fitting; the vent hole equipped with the valve assembly is normally open or normally closed. When the vent hole equipped with the valve assembly is normally open: the vent hole is open in the natural state; when the hollow elastic ball is squeezed, the valve assembly closes the vent hole; when the squeezed hollow elastic ball rebounds and returns to its original state, the valve assembly opens the vent hole. When the vent hole equipped with the valve assembly is normally closed: in the natural state, the valve assembly closes the vent hole; when the hollow elastic ball is squeezed, the vent hole equipped with the valve assembly remains closed; when the hollow elastic ball is squeezed and then rebounds to its original shape, and a certain degree of negative pressure is reached inside the ball, the valve assembly opens the vent hole.

9. A tea tray device, comprising a tea tray with a drain outlet, characterized in that: It also includes a tea tray drainage fitting as described in any one of claims 1-7; one end of the first drainage channel is connected to the water inlet of the elastic ball, and the other end is connected to the drain outlet of the tea tray.

10. A method for clearing blockages in a tea tray device, characterized in that: The tea tray device includes the tea tray drainage fitting as described in any one of claims 1-7; the method for clearing blockages is as follows: Step 1: When the first or second drainage channel is blocked, manually block the drainage channel at the other end of the hollow elastic ball that is not blocked, and then squeeze the hollow elastic ball. Under positive pressure, the valve assembly closes the vent, causing a large pressure to be generated inside the hollow elastic ball to impact the blockage. Step 2: Release the compressed hollow elastic sphere. The air pressure inside the sphere is lower than that outside. Under the action of the external air pressure, the valve assembly opens the vent. Air from outside the sphere is drawn into the sphere through the vent, causing the sphere to spring back to its original shape. Step 3: Repeat steps 1 and 2 until the blockage in the drainage channel is discharged or flushed away.

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