Water change filter device

Abstract

The application discloses a water-replacing filter device, which comprises a filter cylinder, characterized in that a flow guide is arranged in the lower end inlet of the filter cylinder, a plurality of inlets are arranged at intervals on the outer wall of the flow guide, a suction pipe is arranged on the upper part of the filter cylinder, the inlet end of the suction pipe extends into the filter cylinder, and a filter capable of preventing large sundries from entering the suction pipe is arranged in the filter cylinder. The water-replacing filter device has the advantages of simple structure and effective separation of fine sand in the sewage suction process.

Description

Technical Field

[0001] This invention relates to the field of filtration device technology, and specifically to a water exchange filtration device. Background Technology

[0002] Fish tanks, as common aquarium containers, are widely used in homes, offices, and ornamental settings. During the long-term keeping of aquatic life, fish food residue, biological excrement, decaying aquatic plants, and other pollutants easily accumulate in the water. At the same time, the bottom of fish tanks is generally covered with fine ornamental sand, which can easily trap small dirt and sediment in the gaps. Over time, this accumulation can lead to turbid water, water quality deterioration, and the growth of harmful substances such as bacteria and mold, seriously affecting the living environment and ornamental effect of aquatic life. Therefore, it is necessary to regularly change the water and clean the fish tank.

[0003] Currently, conventional aquarium water changing and waste removal equipment on the market has a relatively simple structure. Most of them rely solely on a straight suction pipe to directly extract water and waste from the bottom of the aquarium. In the process of extracting sewage and waste from the bottom, it is very easy to suck out the fine sand at the bottom of the aquarium as well. This not only causes a large amount of fine sand to be lost and damages the landscape structure at the bottom of the aquarium, but also results in a large amount of fine sand impurities mixed in with the extracted water, resulting in poor filtration and cleaning effects.

[0004] Therefore, the existing water exchange and filtration devices need further improvement. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a water exchange and filtration device with a simple structure that can effectively separate fine sand during the sludge suction process.

[0006] To achieve the above objectives, the present invention adopts the following solution: a water exchange and filtration device, comprising a filter cylinder, characterized in that: a flow guide is provided in the lower inlet of the filter cylinder, a plurality of inlets are provided at intervals on the outer wall of the flow guide, a suction pipe is provided in the upper part of the filter cylinder, the inlet end of the suction pipe extends into the filter cylinder, and a filter is provided in the filter cylinder to prevent large debris from entering the suction pipe.

[0007] As another improvement to the water exchange and filtration device of the present invention, the top of the guide member is arranged downward, a sand collection chamber is provided inside the guide member, and a drain hole communicating with the sand collection chamber is provided on the top of the guide member.

[0008] As another improvement to the water exchange and filtration device of the present invention, the top of the flow guide is arranged upward.

[0009] As another improvement to the water exchange and filtration device of the present invention, the filter includes a filter column, the lower end of the filter column is closed, the upper end of the filter column is sleeved on the suction pipe, and a plurality of filter holes are provided on the outer wall of the filter column.

[0010] As another improvement to the water exchange and filtration device of the present invention, the filter includes a filter screen disposed inside the filter cylinder.

[0011] As another improvement to the water exchange and filtration device of the present invention, the filter cylinder includes a lower cylinder and an upper cylinder, a connecting mechanism is provided between the lower cylinder and the upper cylinder, the flow guide is provided in the lower cylinder, and the suction pipe and the filter are respectively provided in the upper cylinder.

[0012] As another improvement of the water exchange filtration device of the present invention, a connecting protrusion is provided at the upper end of the lower cylinder, the outer diameter of the connecting protrusion is smaller than the outer diameter of the lower cylinder, an annular positioning step is provided between the lower end of the connecting protrusion and the upper end of the lower cylinder, the lower end of the upper cylinder is sleeved on the outer wall of the connecting protrusion, and the lower end face of the upper cylinder presses against the annular positioning step.

[0013] As another improvement to the water exchange and filtration device of the present invention, the connecting mechanism includes a positioning groove provided on the outer wall of the connecting protrusion, and a positioning strip provided on the inner wall of the upper cylinder at a position corresponding to the positioning groove, the positioning strip being secured in the positioning groove.

[0014] As another improvement to the water exchange and filtration device of the present invention, the connecting mechanism includes an external thread provided on the outer wall of the connecting protrusion, an internal thread provided on the inner wall of the lower end of the upper cylinder, and the upper cylinder is screwed onto the lower cylinder.

[0015] As another improvement to the water exchange filtration device of the present invention, the top of the flow guide is located inside the inlet end of the filter cylinder.

[0016] In summary, the advantages of this invention compared to existing technologies are as follows: By incorporating a flow guide at the lower inlet of the filter cartridge, and combining this with evenly distributed inlets on the outer wall of the flow guide and gaps in the side walls, a ring-shaped diversion water inlet structure is formed. This structure can evenly guide and buffer the flow of water, debris, and fine sand at the bottom of the aquarium, significantly reducing the impact force of the water flow during negative pressure suction. It also prevents high-pressure water from directly washing away the fine sand at the bottom of the aquarium, effectively preventing the fine sand from being swept up by the water flow and sucked into the device, thus preserving the original aquascape structure at the bottom of the aquarium to the greatest extent. Simultaneously, this diversion water inlet structure can precisely extract fish food residue, biological excrement, suspended debris, and other impurities hidden within the gaps in the fine sand, achieving refined cleaning of the fine sand area while maintaining both cleaning effectiveness and aquascape integrity.

[0017] The product of this invention can also be used for water exchange and filtration in pools, fish ponds, etc. Attached Figure Description

[0018] Figure 1 This is one of the three-dimensional schematic diagrams of the present invention.

[0019] Figure 2 This is a second three-dimensional schematic diagram of the present invention.

[0020] Figure 3 This is a cross-sectional schematic diagram of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the lower cylinder of the present invention.

[0022] Figure 5 This is a schematic diagram of another embodiment of the flow guide of the present invention.

[0023] Figure 6 for Figure 3 Enlarged diagram of point A in the middle.

[0024] Figure 7 This is a schematic diagram of another embodiment of the filter of the present invention. Detailed Implementation

[0025] The above-mentioned and other technical features and advantages of the present invention will be described in more detail below with reference to the accompanying drawings.

[0026] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0027] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0028] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] like Figure 1-7As shown, the present invention discloses a water exchange and filtration device, comprising a filter cylinder 1. A flow guide 2 is installed at the lower inlet of the filter cylinder 1, and a gap 18 is formed between the outer wall of the flow guide 2 and the lower inner wall of the filter cylinder 1. A plurality of water inlets 3 are evenly spaced along the circumference of the outer wall of the flow guide 2. A suction pipe 4 is installed at the upper part of the filter cylinder 1, and the inlet end of the suction pipe 4 extends into the interior of the filter cylinder 1. A filter 5 is installed inside the filter cylinder 1, which can effectively intercept large-volume debris, preventing it from entering the suction pipe 4. The other end of the suction pipe 4 is connected to an external suction device, providing negative pressure for the overall water exchange and sludge removal operation.

[0030] This invention abandons the traditional straight-pipe direct-suction water inlet structure. By incorporating a flow guide 2 at the lower inlet of the filter cylinder 1, and with the evenly distributed water inlets 3 on the outer wall of the flow guide 2 and the gaps 18 on the side walls, a ring-shaped diversion water inlet structure is formed. This structure can evenly guide and buffer the water, dirt, and fine sand at the bottom of the aquarium, significantly reducing the water flow impact force during negative pressure suction. It also prevents high-pressure water from directly washing away the fine sand at the bottom of the aquarium, effectively preventing the fine sand from being swept up by the water flow and sucked into the equipment, thus preserving the original aquascape structure at the bottom of the aquarium to the greatest extent. At the same time, this diversion water inlet structure can accurately extract fish food residue, biological excrement, suspended dirt, and other impurities hidden in the gaps of the fine sand, achieving refined cleaning of the fine sand area while ensuring both cleaning effectiveness and aquascape integrity.

[0031] Meanwhile, this invention integrates a filter 5 inside the filter cartridge 1, which can perform pre-filtration and interception of water and impurities before they enter the suction pipe 4. This double-blocking of fine sand particles and large debris fundamentally prevents the large-scale loss of fine sand used for aquascaping, eliminating the problem of fine sand and impurities mixed in the water during water changes and effectively improving the cleanliness of the filtration. It also effectively prevents large debris such as aquatic plant fragments and food residue from entering the suction pipe 4, avoiding pipe blockage and ensuring continuous, stable, and efficient water change and sludge removal operations, significantly extending the equipment's lifespan and cleaning efficiency.

[0032] The invention features a compact and reasonable overall structure, employing a layered design with a lower-end flow-guiding buffer for water inlet, a middle-layered filtration system, and an upper-end negative pressure suction system. This forms a complete water exchange and waste removal filtration system, effectively solving many drawbacks of traditional aquarium waste removal equipment, such as easy sand suction, easy clogging, incomplete cleaning, and damage to the aquascape. It is suitable for the daily water exchange, waste removal, and water purification needs of various aquariums with sand at the bottom, and is highly practical and applicable.

[0033] See Figure 2-4 The present invention provides a first preferred embodiment of the flow guide 2, wherein the flow guide 2 adopts an assembly structure with the top facing downward, the flow guide 2 has a sand collection cavity 6 formed inside, and the top of the flow guide 2 has a drainage hole 7, which is connected to the internal sand collection cavity 6.

[0034] This implementation adopts a top-mounted, bottom-mounted flow guide structure, combined with an internally enclosed sand collection chamber, which can form a stable water flow buffer and sedimentation area during negative pressure water suction. External water and fine impurities smoothly enter the equipment through the inlet 3 on the side wall of the flow guide 2. The water flow forms a slow flow state inside the sand collection chamber 6, and the flow velocity is greatly reduced. Utilizing the principle of gravity sedimentation, the fine sand particles and heavy dirt mixed in the water are automatically settled and accumulated inside the sand collection chamber 6, realizing the automatic separation of water and sediment. This completely avoids the problem of sediment mixing and extraction in traditional direct suction structures, further preventing the loss of fine sand from the aquarium and comprehensively protecting the integrity of the aquarium bottom decoration.

[0035] In this invention, when the filter device is removed from the fish tank, the water inside the sand collection chamber 6 can flow downward through the drain hole 7 at the top of the guide 2.

[0036] See Figure 5 The present invention provides a second embodiment of the flow guide 2, wherein the top of the flow guide 2 is arranged upward.

[0037] In a first embodiment of the filter 5 of the present invention, a filter column 8 is included, the lower end of which is closed, and the upper end of which is sleeved on the suction tube 4. A plurality of filter holes 9 are provided on the outer wall of the filter column 8. The filter 5 and the suction tube 4 are detachable.

[0038] In this embodiment, the filter column 8 is sleeved on the outside of the suction pipe 4, completely enclosing the water inlet end of the suction pipe. This ensures that all water entering the suction pipe 4 must pass through the filter holes 9 for screening and filtration. This effectively intercepts various large particulate impurities such as broken aquatic plants, large pieces of feed residue, and suspended flocculent dirt, effectively reducing the amount of debris entering the suction pipe 4 and the internal parts of the external suction equipment. This effectively protects the pipeline and the suction power equipment, avoids problems such as pipe blockage and equipment failure, and significantly extends the service life of the entire device.

[0039] In this invention, the filter 5 and the suction pipe 4 adopt a detachable design, making disassembly, cleaning, and maintenance extremely convenient. After long-term use, impurities will accumulate on the surface of the filter holes 9 and inside the column. Users can directly disassemble the filter column 8 from the suction pipe 4 to rinse, clean, or replace the filter column separately without disassembling the entire device. The maintenance operation is simple and efficient, requiring no professional tools, which greatly reduces the later maintenance cost and operation difficulty of the equipment. It can always ensure the permeability of the filter holes and stably maintain the water exchange and dirt suction efficiency of the equipment.

[0040] In a second embodiment of the filter 5 of the present invention, the filter 5 includes a filter screen 10 disposed inside the filter cylinder 1.

[0041] The third embodiment of the filter 5 described in this invention combines the first and second embodiments to achieve dual filtration.

[0042] The filter cartridge 1 of the present invention includes a lower cylinder 11 and an upper cylinder 12. A connecting mechanism 13 is provided between the lower cylinder 11 and the upper cylinder 12. The flow guide 2 is disposed in the lower cylinder 11, and the suction pipe 4 and the filter 5 are respectively disposed in the upper cylinder 12.

[0043] The split-type cylinder structure of this invention effectively solves the drawbacks of traditional integrated filter cylinders, such as difficult disassembly and assembly, and cumbersome cleaning and maintenance. The upper cylinder 12 and lower cylinder 11 can be quickly disassembled and assembled through the connecting mechanism 13. After long-term use, users can disassemble the cylinders individually to clean, inspect, and replace the guide components and sand accumulation areas inside the lower cylinder 11, as well as the filter and suction pipe components inside the upper cylinder 12, without having to disassemble the entire device. This makes maintenance more precise and cleaning more convenient.

[0044] In this invention, a connecting protrusion 14 is provided at the upper end of the lower cylinder 11. The outer diameter of the connecting protrusion 14 is smaller than the outer diameter of the lower cylinder 11. An annular positioning step 15 is provided between the lower end of the connecting protrusion 14 and the upper end of the lower cylinder 11. The lower end of the upper cylinder 12 is sleeved on the outer wall of the connecting protrusion 14, and the lower end face of the upper cylinder 12 presses against the annular positioning step 15.

[0045] In a first embodiment of the connecting mechanism 13 of the present invention, the connecting mechanism 13 includes a positioning groove 16 disposed on the outer wall of the connecting protrusion 14, and a positioning strip 17 disposed on the inner wall of the upper cylinder 12 at a position corresponding to the positioning groove 16, the positioning strip 17 being snapped into the positioning groove 16. The lower cylinder 11 and the upper cylinder 12 are connected by a snap-fit ​​connection, allowing for installation and disassembly.

[0046] In a second embodiment of the connecting mechanism 13 of the present invention, the connecting mechanism 13 includes an external thread provided on the outer wall of the connecting protrusion 14, and an internal thread provided on the inner wall of the lower end of the upper cylinder 12. The upper cylinder 12 is screwed onto the lower cylinder 11. The lower cylinder 11 and the upper cylinder 12 are connected by a threaded connection, which is safe and reliable.

[0047] In this invention, the top of the flow guide 2 is located inside the inlet end of the filter cylinder 1.

[0048] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A water exchange filtration device, comprising a filter cylinder (1), characterized in that: A guide (2) is provided in the lower inlet of the filter cylinder (1), and a number of inlets (3) are provided at intervals on the outer wall of the guide (2). A suction pipe (4) is provided in the upper part of the filter cylinder (1), and the inlet end of the suction pipe (4) extends into the filter cylinder (1). A filter (5) is provided in the filter cylinder (1) to prevent large debris from entering the suction pipe (4).

2. The water exchange filtration device according to claim 1, characterized in that: The top of the guide (2) is set downwards, and a sand collection chamber (6) is provided inside the guide (2). A drainage hole (7) connected to the sand collection chamber (6) is provided on the top of the guide (2).

3. The water exchange filtration device according to claim 1, characterized in that: The top of the guide (2) is positioned upwards.

4. The water exchange and filtration device according to claim 1, characterized in that: The filter (5) includes a filter column (8), the lower end of the filter column (8) is closed, the upper end of the filter column (8) is sleeved on the suction tube (4), and a number of filter holes (9) are provided on the outer wall of the filter column (8).

5. A water exchange filtration device according to claim 1 or 4, characterized in that: The filter (5) includes a filter screen (10) disposed inside the filter cylinder (1).

6. The water exchange filtration device according to claim 1, characterized in that: The filter cartridge (1) includes a lower cylinder (11) and an upper cylinder (12). A connecting mechanism (13) is provided between the lower cylinder (11) and the upper cylinder (12). The flow guide (2) is provided inside the lower cylinder (11). The suction pipe (4) and the filter (5) are respectively provided inside the upper cylinder (12).

7. The water exchange and filtration device according to claim 1, characterized in that: A connecting protrusion (14) is provided at the upper end of the lower cylinder (11). The outer diameter of the connecting protrusion (14) is smaller than the outer diameter of the lower cylinder (11). An annular positioning step (15) is provided between the lower end of the connecting protrusion (14) and the upper end of the lower cylinder (11). The lower end of the upper cylinder (12) is sleeved on the outer wall of the connecting protrusion (14). The lower end face of the upper cylinder (12) presses against the annular positioning step (15).

8. A water exchange filtration device according to claim 7, characterized in that: The connecting mechanism (13) includes a positioning groove (16) provided on the outer wall of the connecting protrusion (14), and a positioning strip (17) is provided on the inner wall of the upper cylinder (12) at a position corresponding to the positioning groove (16), and the positioning strip (17) is locked in the positioning groove (16).

9. A water exchange filtration device according to claim 6, characterized in that: The connecting mechanism (13) includes an external thread on the outer wall of the connecting protrusion (14) and an internal thread on the inner wall of the lower end of the upper cylinder (12). The upper cylinder (12) is screwed onto the lower cylinder (11).

10. A water exchange filtration device according to claim 2, characterized in that: The top of the guide (2) is located inside the inlet end of the filter cylinder (1).

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