Overflowing inlet flow suitable for increased discharge anti-blocking structure and pool

Abstract

The application relates to the technical field of drainage devices, and discloses a drainage increasing and blockage preventing structure suitable for submerged inflow and a pool. The structure comprises a filter assembly arranged at a drainage interface, the filter assembly comprises at least one filter screen which can move up and down, and a drainage cavity is arranged below the filter screen. At least one through differential pressure balance pipe is arranged and used for introducing gas into the drainage cavity to balance the pressure of the drainage cavity. At least one driving assembly which can realize displacement transmission function is arranged, the driving assembly is connected with the filter screen and the differential pressure balance pipe, is used for driving the filter screen to move up and down under the action of water flow or external force, and forms a reverse linkage motion relationship between the differential pressure balance pipe and the filter screen, so that the functions of air ventilation and drainage increasing and the function of blockage prevention of the filter screen are realized. The structure of the application can realize self-pressure balance during the drainage process through the reverse linkage between the filter screen and the differential pressure balance pipe, avoids blockage of the filter screen caused by negative pressure, improves the drainage efficiency, and is suitable for stable drainage under the condition of submerged inflow.

Description

Technical Field

[0001] This application relates to the field of drainage device technology, specifically to a drainage enhancement and anti-clogging structure and water tank suitable for submerged inflow. Background Technology

[0002] Currently, most methods for draining water tanks use a combination of filters and drainage pipes. However, this approach is ineffective for handling large volumes of water. When the water flow into the tank is submerged, drainage is slow, and the water level drops gradually. Furthermore, when the filter becomes clogged, the water level drops even more slowly. In such cases, manual removal of the filter to remove debris or manually cleaning the filter's interior is necessary for efficient drainage. However, manually removing the filter may cause water containing debris to flow into the pipes and clog them. Manually cleaning the filter is also unsanitary, potentially leading to bacterial contamination, and the process is complex and costly. Summary of the Invention

[0003] The purpose of this application is to provide a drainage and anti-clogging structure and water tank suitable for submerged inflow. It can achieve pressure self-balancing during drainage by means of reverse linkage between the filter screen and the pressure differential balance pipe, so as to avoid the filter screen from being blocked due to negative pressure and improve drainage efficiency. It is suitable for stable drainage under submerged inflow conditions.

[0004] This application discloses a drainage and anti-clogging structure suitable for submerged inflow, comprising:

[0005] The filter assembly is installed at the drain interface, and the filter assembly includes at least one filter screen 8 that can move up and down, with a drain cavity below the filter screen 8;

[0006] At least one through-type pressure differential balancing pipe 7 is disposed inside or around the filter screen 8 for introducing gas into the drainage chamber to balance the pressure of the drainage chamber; and,

[0007] At least one drive component capable of displacement transmission is provided. The drive component connects the filter screen 8 and the pressure difference balance pipe 7. It is used to drive the filter screen 8 to move up and down under the action of water flow or external force, and to form a reverse linkage motion relationship between the pressure difference balance pipe 7 and the filter screen 8, thereby realizing ventilation and discharge and preventing the filter screen 8 from clogging.

[0008] In a preferred embodiment, the drive assembly includes at least one rotatably disposed rotating member 4 and a flexible transmission connector 5 wound around the rotating member 4, the two ends of the flexible transmission connector 5 being connected to the filter screen 8 and the differential pressure balance tube 7, respectively.

[0009] In a preferred embodiment, the differential pressure balancing pipe 7 is arranged symmetrically or uniformly with respect to the axis of the filter screen 8.

[0010] In a preferred embodiment, the differential pressure balancing tube 7 consists of 2 to 10 tubes.

[0011] In a preferred embodiment, the differential pressure balancing tube 7 is located within the filter cavity defined by the wall of the filter screen 8.

[0012] In a preferred embodiment, the lower surface of the filter screen 8 is provided with a plurality of drainage holes 9 that communicate with the drainage cavity.

[0013] In a preferred embodiment, the differential pressure balancing pipe 7 may be made of a material with good corrosion resistance, pressure resistance and sealing properties, such as PVC (polyvinyl chloride), stainless steel (e.g., 304 stainless steel), nylon (PAG) or other engineering plastics with waterproof and airtight properties.

[0014] In a preferred embodiment, the flexible transmission connector 5 is configured to rotate via the rotating member 4 to drive the differential pressure balance tube 7 upward when the filter screen 8 moves downward due to the water flow pressure generated by the submerged inflow, so that the upper edge of the differential pressure balance tube 7 exceeds the water surface.

[0015] In a preferred embodiment, the flexible transmission connector 5 is a replaceable metal wire, braided rope, or fiber belt.

[0016] In a preferred embodiment, the rotating member 4 is rotatably mounted on a fixed bracket, which is positioned above the drain port and supports the rotation of the rotating member 4.

[0017] In a preferred embodiment, the bottom of the differential pressure balancing tube 7 is provided with a limiting component, which is configured to limit the vertical movement of the differential pressure balancing tube 7, wherein the limiting component abuts against the outer surface of the bottom of the filter screen 8 when the differential pressure balancing tube 7 rises to its limit position.

[0018] In a preferred embodiment, the limiting component is a limiting ring, a limiting block, or a stop structure with a guide sleeve.

[0019] In a preferred embodiment, the limiting component is sleeved around the bottom of the differential pressure balancing pipe 7, and the diameter of the limiting component is larger than the diameter of the drain hole 9.

[0020] In a preferred embodiment, the filter assembly further includes a guide 6, which is evenly arranged around the circumference of the filter screen 8 and perpendicular to the horizontal plane to form a support frame for the filter screen 8. The guide 6 is configured to guide the filter screen 8 to move up and down along its own axis.

[0021] In a preferred embodiment, the guide member 6 is a guide rod evenly arranged along the circumference of the filter screen 8, and the guide rod is connected to the filter screen 8.

[0022] In a preferred embodiment, the guide 6 is a retractable guide 6.

[0023] In a preferred embodiment, the guide 6 is a compression spring.

[0024] In a preferred embodiment, the upper surface of the drain interface is provided with a limiting support plate 2, which is connected to the drain interface. The lower surface of the limiting support plate 2 is connected to the guide member 6 to support and position the filter assembly.

[0025] In a preferred embodiment, the outer edge of the limiting support plate 2 that contacts the water tank 1 is a sloped structure with an inclined angle, which is used to guide the water to flow smoothly into the drainage interface when the water flow impacts. The inner edge of the limiting support plate 2 that contacts the drainage interface is a sloped structure with an inclined angle, so as to reduce flow resistance and prevent impurities from accumulating at the edge.

[0026] In a preferred embodiment, the device further includes a handle 3, which is pivotally connected to the limiting support plate 2 via a rotatable component. The rotatable component allows the handle 3 to rotate between a vertical operating position and a horizontal storage position. The handle 3 is provided with the rotating member 4.

[0027] In a preferred embodiment, the handle 3 is bow-shaped and has a gripping part that is easy to hold. The two ends of the handle 3 are pivotally connected to the upper surface of the limiting support plate 2 via a rotating assembly.

[0028] In a preferred embodiment, the handle 3 is configured to provide a component for lifting the entire structure upward when rotated to the vertical operating position, and to at least partially conform to the upper surface of the limiting support plate 2 when rotated to the flat storage position.

[0029] In a preferred embodiment, the rotatable component is a pivot assembly, which includes a hinge seat disposed on the limiting support plate 2 and a pivot shaft disposed at the lower end of the handle 3. The handle 3 is rotatably connected relative to the hinge seat via the pivot shaft.

[0030] In a preferred embodiment, when the filter screen 8 is in a submerged inflow state and moves downward, after the pressure difference balance pipe 7 rises until its upper edge exceeds the water surface, the flow state of the fluid in the filter screen 8 changes from a submerged inflow state to a free inflow state.

[0031] This application also discloses a water tank 1, which includes the drainage and anti-clogging structure for submerged inflow as described in any of the preceding claims. The drainage and anti-clogging structure is installed at the drainage interface at the bottom of the water tank 1, and the differential pressure balance pipe 7 connects the air above the water tank 1 and below the filter screen 8.

[0032] In this embodiment, the filter screen 8 and the pressure balance pipe 7 are connected together by a flexible transmission connector 5 wound around the rotating component 4, so that the two can move in opposite directions. When there is a flooding situation, the water flow will press the filter screen 8 downward, so that the other end of the flexible transmission connector 5 is pulled upward, causing the pressure balance pipe 7 to eventually move upward above the water surface. Since the pressure balance pipe 7 is a connected pipe, the air above the water surface can be connected with the air in the drainage cavity below the funnel, thereby balancing the pressure and avoiding the possibility of negative pressure after the filter screen 8 is flooded when the water flow is too large.

[0033] Furthermore, the filter assembly is equipped with a guide 6 and a limiting support plate 2 to maintain the stable axial movement of the filter screen 8 and prevent excessive displacement or tilting. The guide slopes on the outer and inner edges of the limiting support plate 2 optimize the water flow path, reduce flow resistance, and prevent impurities from being trapped.

[0034] Furthermore, the rotatable handle 3 not only facilitates the extraction and maintenance of the device, but also allows it to be placed flat on top of the support plate during storage, reducing space occupation and improving overall safety and ease of operation.

[0035] The specification of this application contains numerous technical features distributed across various technical solutions. Listing all possible combinations of these technical features (i.e., technical solutions) would make the specification excessively lengthy. To avoid this problem, the various technical features disclosed in the above-described invention, the various technical features disclosed in the following embodiments and examples, and the various technical features disclosed in the accompanying drawings can be freely combined to form various new technical solutions (all of which are considered to have been described in this specification), unless such a combination of technical features is technically infeasible. For example, one example discloses feature A+B+C, and another example discloses feature A+B+D+E. Features C and D are equivalent technical means that serve the same function, and technically only one needs to be used; they cannot be used simultaneously. Feature E can technically be combined with feature C. Therefore, the solution A+B+C+D should not be considered as described because it is technically infeasible, while the solution A+B+C+E should be considered as described. Attached Figure Description

[0036] Figure 1 This is an inverted structural schematic diagram of a flood discharge and anti-clogging structure applicable to a flood inflow according to one embodiment of this application;

[0037] Figure 2 This is a schematic diagram of a drainage and anti-clogging structure suitable for submerged inflow according to one embodiment of this application in a waterless state.

[0038] Figure 3 This is a schematic diagram of a drainage and anti-clogging structure applicable to submerged inflow under submerged inflow conditions, according to one embodiment of this application.

[0039] Figure 4 This is a schematic diagram of a drainage and anti-clogging structure applicable to submerged inflow under a clogging state, according to one embodiment of this application;

[0040] Figure 5 This is a schematic diagram of the structure of a flood discharge and anti-clogging structure applicable to submerged inflow, according to one embodiment of this application, after operation in a clogging state;

[0041] Figure 6 This is a schematic diagram of the structure of a water tank according to one embodiment of this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1-Water tank, 2-Limiting support plate, 3-Handle, 4-Rotating component, 5-Flexible transmission connector, 6-Guide component, 7-Differential pressure balance pipe, 8-Filter screen, 9-Drain hole Detailed Implementation

[0044] In the following description, many technical details are presented to help the reader better understand this application. However, those skilled in the art will understand that the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0045] the term

[0046] As used in this article, "submerged inflow" refers to the state in which the filter screen or drain outlet is below the liquid surface. In this state, the liquid completely covers the inflow surface of the filter screen, and the gas cannot freely enter the drain cavity below the filter screen, thus forming a gas-pressure difference. At the same time, submerged inflow is usually characterized by a significantly larger inflow volume than outflow volume.

[0047] In contrast, as used in this article, "free flow" means that the upper part of the filter screen or drain outlet is connected to the air, allowing water to flow freely into the drain cavity without obstruction. The air and hydraulic pressure are strongly balanced, resulting in smooth drainage and a high flow rate.

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0049] The first embodiment of this application relates to a drainage and anti-clogging structure suitable for submerged inflow, the structure of which is shown in the figure below. Figure 1-5As shown, it includes: a filter assembly disposed at the drain interface, at least one through-type differential pressure balance pipe 7, and at least one drive assembly capable of realizing displacement transmission function.

[0050] The filter assembly includes at least one vertically movable filter screen 8, with a drainage chamber below the filter screen 8. A differential pressure balancing pipe 7 is disposed inside or around the filter screen 8, used to introduce gas into the drainage chamber to balance the pressure within the drainage chamber. A drive assembly connects the filter screen 8 and the differential pressure balancing pipe 7, used to drive the filter screen 8 to move up and down under the action of water flow or external force, and to create a counter-current linkage between the differential pressure balancing pipe 7 and the filter screen 8, thereby achieving increased ventilation and drainage while preventing the filter screen 8 from clogging.

[0051] The following describes some optional implementation methods to further supplement and define the technical solution of this application. It should be understood that these optional implementation methods are all within the overall conceptual scope of this application and are intended to optimize the morphology, connection method, movement relationship, and installation arrangement of the core structure. Unless otherwise specified, these optional implementation methods can be implemented independently or combined arbitrarily to adapt to different application environments and drainage conditions.

[0052] The filter assembly is preferably installed at the drain interface at the bottom of the water tank 1. The filter screen 8 can be a circular or polygonal frame structure. The outer edge of the filter screen 8 is separated from the inner wall of the pipe by a certain gap. The lower part of the filter screen 8 is provided with multiple drain holes 9 for guiding and filtering impurities. The lower part of the filter screen 8 is also provided with multiple balance pipe holes for the pressure differential balance pipe 7 to pass through the filter screen 8. The diameter of the balance pipe holes can be larger than or slightly larger than the pressure differential balance pipe 7, so that the pressure differential balance pipe 7 can move smoothly in the vertical direction.

[0053] The filter screen 8 may be provided with guide members 6 in the circumferential direction. The guide members 6 are arranged vertically to guide the filter screen 8 to move up and down along the axial direction and prevent deviation or tilting. The guide member 6 can be a guide rod or a sleeve structure, or it can be a telescopic design. Preferably, the guide member 6 is a compression spring, the upper end of which is connected to the limiting support plate 2, and the lower end is connected to the upper part or side edge of the filter screen 8. When the filter screen 8 moves downward under the action of water flow pressure, the compression spring is stretched by the pressure, thereby causing the filter screen 8 to move downward. When the water flow weakens or disappears, the spring releases its elastic force and drives the filter screen 8 back to the initial position, thereby realizing the automatic reset of the filter screen 8.

[0054] A limiting support plate 2 is installed above the filter screen 8, with its outer edge contacting the bottom of the water tank 1 to form a support. The outer edge of the limiting support plate 2 is preferably a sloped structure with an inclined angle, used to guide the water to flow smoothly into the drainage interface when the water flow impacts. The inner edge has the same sloped structure to reduce flow resistance and prevent impurities from being trapped. This gentle slope structure can minimize the generation of eddies when the water flows through it, thereby avoiding the formation of negative pressure that affects the water discharge.

[0055] To facilitate easy replacement of the compression spring, a lifting ring structure can be provided at the connection point of the limiting support plate 2 or the filter screen 8. The lifting ring is used to hang the compression spring so that when maintenance or replacement is required, the compression spring can be quickly removed from the entire structure by unhanging it.

[0056] At least one through-type differential pressure balancing pipe 7 is arranged symmetrically or evenly around the axis of the filter screen 8, with its lower end extending below the bottom of the filter screen 8 and its upper end rising above the liquid surface. When a negative pressure is generated in the drainage chamber due to the submerged inflow, air enters the chamber through the differential pressure balancing pipe 7 to achieve air pressure balance.

[0057] The drive assembly includes at least one rotatably mounted rotating member 4 and a flexible transmission connector 5 wound around it. The flexible transmission connector 5 may be a metal wire, braided rope, or fiber belt, with one end connected to the bottom of the filter screen 8 and the other end connected to the bottom of the differential pressure balance tube 7.

[0058] In some embodiments, when the flexible transmission connector 5 is a filament or rope, one end of the flexible transmission connector 5 can pass through the drain hole 9 at the bottom of the filter screen 8 and then be fixed to the bottom surface between adjacent drain holes 9, thereby achieving connection with the filter screen 8. The other end of the flexible transmission connector 5 can be connected to the bottom of the differential pressure balance pipe 7 by binding.

[0059] When the filter screen 8 moves downward under the pressure of the water flow, the flexible transmission connector 5 drives the differential pressure balance pipe 7 to move upward via the rotating component 4 until the upper edge of the differential pressure balance pipe 7 exceeds the water surface, allowing air to enter the drainage chamber. The drainage state changes from submerged flow to free flow, thereby significantly improving drainage efficiency.

[0060] The rotating component 4 can be a rotatable element such as a roller, shaft, pulley, or grooved wheel, used to change the direction of force on the flexible transmission connector 5 and to transmit force. In some optional embodiments, the rotating component 4 is a roller with its axis parallel to the horizontal plane, and its outer circumference is provided with an annular groove to accommodate and guide the flexible transmission connector 5 to run smoothly during rotation, avoiding delamination or knotting.

[0061] To prevent the differential pressure balancing pipe 7 from rising excessively or tilting, a limiting component is provided at its bottom. The limiting component can be a limiting ring, a limiting block, or a stop structure with a guide sleeve. When the differential pressure balancing pipe 7 rises to its limit position, the limiting component abuts against the outer surface of the bottom of the filter screen 8 to limit its maximum stroke.

[0062] A handle 3 is provided above the limiting support plate 2, and the handle 3 is pivotally connected to the support plate via a rotatable component. The handle 3 can rotate between a vertical operating position and a horizontal storage position. In the vertical position, the entire filter assembly can be lifted for inspection or cleaning, and in the storage position, it fits snugly against the support plate to reduce space occupation.

[0063] The aforementioned rotating member 4 is disposed on the handle 3. Specifically, the rotating member 4 may be disposed at the middle position of the handle 3, and the main body of the handle 3 passes through the axis of the rotating member 4, allowing the rotating member 4 to rotate freely relative to the handle 3. To prevent the rotating member 4 from slipping from the middle of the handle 3 to both ends, a limiting structure may be provided on the handle 3. The limiting structure of the handle 3 may include limiting rings, limiting flanges, or grooves located on both sides of the rotating member 4. In some embodiments, the limiting structure of the handle 3 may be integrally formed with the handle 3, or it may be a separate component sleeved and installed on the outer periphery of the handle 3.

[0064] The handle 3 is preferably an arc-shaped structure, and may have a gripping part for easy holding. Both ends are connected to the upper surface of the support plate via a pivot assembly. The pivot assembly includes a hinge seat and a pivot, allowing the handle 3 to rotate smoothly relative to the support plate. In some embodiments, the handle 3 may not have a rotating function, but may simply be vertically fixed to the upper surface of the limiting support plate 2.

[0065] Generally, multiple handles 3, multiple rotating components 4, and multiple differential pressure balancing pipes 7 are symmetrically arranged around the axis of the entire structure. This serves two purposes: firstly, to ensure the stability of the entire device's center of gravity and its location at the center of the axis, preventing tilting or swaying during water flow or lifting operations, thus ensuring the filter screen can move smoothly up and down in the vertical direction; secondly, to achieve comprehensive air pressure balance. Specifically, if only one differential pressure balancing pipe is installed, gas in some areas may not be able to smoothly enter the drainage chamber, resulting in persistent air pressure differentials and poor drainage. By installing multiple differential pressure balancing pipes, the air barrier can be overcome, allowing all areas inside the drainage chamber to receive air compensation, thereby achieving comprehensive balance of internal and external air pressure and further improving drainage stability and efficiency.

[0066] The working principle is explained below. In the initial stage of drainage, the water enters the filter screen 8, forming a submerged inflow state. As the water pressure increases, the filter screen 8 moves downward, driving the flexible transmission connector 5 to pull the pressure balance pipe 7 upward. When the upper end of the pressure balance pipe 7 passes the water surface, the atmosphere enters the drainage chamber through it, making the pressure inside the chamber consistent with the outside pressure. The drainage changes from submerged inflow to free inflow, and the flow rate and velocity are significantly increased.

[0067] When solid impurities inside the filter screen 8 cause poor drainage and blockage, the pressure difference balance pipe 7 can be repeatedly pulled manually or by external force to make the filter screen 8 and the pressure difference balance pipe 7 move in opposite directions. The impurities inside the filter screen 8 are loosened by the water flow and vibration, and the water can be discharged through the loosening process. Since the pulling action is carried out in the vertical direction, the movement trajectory of the impurities inside the filter screen 8 is mainly distributed in the up and down direction, and finally forms a near-straight reciprocating motion path, which also provides a better passage for water to be discharged.

[0068] When the water tank 1 is emptied or stopped, the entire filter assembly can be removed by lifting handle 3 for cleaning or maintenance.

[0069] All components in this application are designed as replaceable structures, allowing for independent replacement without compromising overall sealing and installation stability. This design facilitates tiered maintenance of components based on usage frequency or wear condition, significantly extending the device's lifespan and reducing subsequent maintenance costs.

[0070] For example, if the flexible transmission connector 5 is made of metal wire, braided rope, or fiber belt, its performance may deteriorate or it may break after long-term use due to fatigue, wear, or corrosion. In this case, it can be detached from the rotating component 4 and removed from the connection end of the differential pressure balance pipe 7 or filter screen 8, and then a new flexible transmission connector 5 can be installed. The maintenance operation is simple and quick, and it is convenient to replace aging parts regularly, thereby maintaining the transmission reliability and operational stability of the system.

[0071] To better understand the technical solution of this application, a specific example is provided below. The details listed in this example are mainly for ease of understanding and are not intended to limit the scope of protection of this application.

[0072] This embodiment provides a drainage enhancement and anti-clogging structure suitable for submerged inflow. The device is installed at the drainage interface of the water tank 1 and includes a limiting support plate 2, a filter assembly, a differential pressure balancing pipe 7, and a drive assembly.

[0073] The limiting support plate 2 is arranged horizontally, and its outer edge is a downward-sloping annular surface structure, which is used to guide the water to flow smoothly into the drainage interface when the water flows in. There is an opening in the center of the support plate, and four handles 3 are evenly distributed on the top of the support plate. The four handles 3 are symmetrically arranged along the circumference, which makes it easy for the operator to lift the entire structure upward.

[0074] The filter assembly includes a cylindrical filter screen 8, with multiple densely distributed drainage holes 9 on the lower surface of the filter screen 8, allowing water to pass through while blocking solid impurities. Multiple compression springs are arranged circumferentially on the filter screen 8. When the filter screen 8 is subjected to water flow pressure and moves downwards, the springs are stretched; when the water flow weakens, the spring force is released, causing the filter screen 8 to automatically return to its original position.

[0075] The filter screen 8 has four through-type pressure difference balance pipes 7 inside, such as... Figure 2 As shown, in the anhydrous state, the upper end of the differential pressure balancing pipe 7 does not exceed the upper surface of the limiting support plate 2, while the lower end is far from the lower surface of the filter screen 8. The four pipes are symmetrically arranged along the axial direction of the filter screen 8. Each differential pressure balancing pipe 7 is used to introduce gas into the cavity to balance the pressure difference when the filter screen 8 moves downward. Each differential pressure balancing pipe 7 is equipped with a limiting ring at the bottom to prevent excessive upward movement.

[0076] The drive assembly employs a flexible transmission structure to achieve reverse linkage between the filter screen 8 and the differential pressure balance tube 7. Specifically, each handle 3 has a rotating roller in the middle, and a flexible transmission connector 5, such as a stainless steel wire rope, is wound around the roller, with one end connected to the bottom of the filter screen 8 and the other end connected to the corresponding differential pressure balance tube 7. Figure 3 As shown, when the filter screen 8 moves downward under the action of water pressure, the roller rotates and drives the connector to pull the pressure difference balance pipe 7 upward, so that the pipe opening at the upper end of the pressure difference balance pipe 7 is higher than the water surface, thereby forming an air passage and realizing drainage and flow increase. At this time, due to the presence of the bottom limiting ring, the lower end of the pressure difference balance pipe 7 will only abut against the lower surface of the filter screen 8 and will not continue to rise.

[0077] When the water flow stops, the compression spring releases its elastic force, causing the filter screen 8 to reset, and the differential pressure balance pipe 7 also descends to return to its waterless state.

[0078] like Figure 4 As shown, when solid impurities accumulate in the filter screen 8, making it difficult for water to flow downwards, simply lift and lower the pressure differential balance pipe 7 by hand to make the filter screen 8 move up and down continuously. This will cause the solid impurities to move according to the movement trajectory. Figure 5 As shown, this leaves a channel for water to drain out.

[0079] The second embodiment of this application relates to a water tank 1, such as... Figure 6 As shown, it includes the drainage and anti-clogging structure suitable for submerged inflow as described in any one of the first embodiments, wherein the drainage and anti-clogging structure is installed at the drainage interface at the bottom of the water tank 1, and the pressure difference balance pipe 7 connects the air above the water tank 1 and below the filter screen 8.

[0080] To adapt to different types and uses of water tank 1 structures, the dimensions of the limiting support plate 2 and the filter screen 8 in this embodiment can be differentiated according to the shape, depth, lower pipe diameter, and drainage volume of water tank 1. For example, when the drainage outlet of water tank 1 is large, a larger size limiting support plate 2 can be used, as long as the diameter of the outer edge of the limiting support plate 2 is larger than the diameter of the drainage outlet. If the drainage volume is large, the filter screen 8 can also be replaced with a model with a larger diameter and depth.

[0081] It should be noted that in this patent application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. In this patent application, if it refers to performing an action according to an element, it means performing the action at least according to that element, including two cases: performing the action only according to that element, and performing the action according to that element and other elements. Expressions such as "multiple," "repeatedly," and "various" include two, two times, two kinds, and more than two, more than two times, and more than two kinds.

[0082] All documents mentioned in this application are considered to be incorporated in their entirety into the disclosure of this application so that they can serve as a basis for modifications if necessary. Furthermore, it should be understood that after reading the foregoing disclosure of this application, those skilled in the art can make various alterations or modifications to this application, and these equivalent forms also fall within the scope of protection claimed in this application.

Claims

1. A discharge enhancement and anti-clogging structure suitable for submerged inflow, characterized in that, include: The filter assembly is provided at the drain interface, the filter assembly includes at least one filter screen (8) that can move up and down, and the drain cavity is located below the filter screen (8); At least one through-pressure differential balance pipe (7) is provided inside or around the filter screen (8) for introducing gas into the drainage cavity to balance the pressure of the drainage cavity; as well as, At least one drive component capable of displacement transmission is provided. The drive component connects the filter screen (8) and the pressure balance pipe (7) to drive the filter screen (8) to move up and down under the action of water flow or external force, and to form a reverse linkage motion relationship between the pressure balance pipe (7) and the filter screen (8), thereby realizing ventilation and discharge and filter screen (8) anti-clogging.

2. The drainage and anti-clogging structure suitable for submerged inflow as described in claim 1, characterized in that, The drive assembly includes at least one rotatably mounted rotating member (4) and a flexible transmission connector (5) wound around the rotating member (4), the two ends of which are connected to the filter screen (8) and the differential pressure balance tube (7), respectively.

3. The drainage and anti-clogging structure suitable for submerged inflow as described in claim 2, characterized in that, The flexible transmission connector (5) is configured to rotate via the rotating member (4) to drive the differential pressure balance tube (7) upward when the filter screen (8) moves downward due to the water pressure generated by the submerged inflow, so that the upper edge of the differential pressure balance tube (7) exceeds the water surface.

4. The drainage and anti-clogging structure suitable for submerged inflow as described in claim 2, characterized in that, The rotating component (4) is rotatably mounted on a fixed bracket, which is located above the drain port and is used to support the rotation of the rotating component (4).

5. The drainage and anti-clogging structure suitable for submerged inflow as described in claim 1, characterized in that, The bottom of the differential pressure balancing tube (7) is provided with a limiting component, which is configured to limit the vertical movement of the differential pressure balancing tube (7). The limiting component abuts against the outer surface of the bottom of the filter screen (8) when the differential pressure balancing tube (7) rises to the limit position.

6. The drainage and anti-clogging structure suitable for submerged inflow as described in claim 2, characterized in that, The filter assembly further includes a guide (6), which is evenly arranged around the circumference of the filter (8) and perpendicular to the horizontal plane to form a support frame for the filter (8). The guide (6) is configured to guide the filter (8) to move up and down along its own axis.

7. The drainage and anti-clogging structure suitable for submerged inflow as described in claim 6, characterized in that, The upper surface of the drain interface is provided with a limiting support plate (2), which is connected to the drain interface. The lower surface of the limiting support plate (2) is connected to the guide (6) to support and position the filter assembly.

8. The discharge enhancement and anti-clogging structure suitable for submerged inflow as described in claim 7, characterized in that, It also includes a handle (3), which is pivotally connected to the limiting support plate (2) via a rotatable component. The rotatable component allows the handle (3) to rotate between a vertical operating position and a horizontal storage position. The handle (3) is provided with the rotating member (4).

9. The drainage and anti-clogging structure suitable for submerged inflow as described in any one of claims 1-8, characterized in that, When the filter screen (8) is in a submerged inflow state and moves downward, the pressure difference balance pipe (7) rises until its upper edge exceeds the water surface, and the flow state of the fluid in the filter screen (8) changes from a submerged inflow state to a free inflow state.

10. A water tank, characterized in that, Includes a drainage and anti-clogging structure suitable for submerged inflow as described in any one of claims 1 to 9, wherein the drainage and anti-clogging structure is installed at the drainage interface at the bottom of the water tank (1), and the differential pressure balance pipe (7) connects the air above the water tank (1) and below the filter screen (8).

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