Waterfall type external filter

Abstract

The utility model discloses a waterfall type externally-hung filter which comprises a filter shell with an opening in the top end, a hanging part for installing the filter shell on a culture tank is arranged on the filter shell, a filter module is arranged in the filter shell, a water passing gap is reserved between the filter module and the filter shell, and the filter shell is provided with a water inlet and a water outlet. The filtering shell is provided with a water feeding device which can extend into the breeding tank to send water to the top of the filtering module, and the top of the filtering shell is provided with a waterfall type water outlet device which guides the water in the filtering shell into the breeding tank; and an oil film absorption device is arranged on the water feeding device. Water does not need to be added when the device is started, and the device is simple in structure and convenient to use.

Description

Technical Field

[0001] This utility model relates to filter components, and more particularly to a waterfall-type external filter. Background Technology

[0002] Wall-mounted filters are a common type of filter used in aquariums and other aquariums for filtering impurities and removing oil films. They are hung on the top of the tank wall, with the filtration section located outside the tank and the water inlet and oil collection sections inside. However, most current wall-mounted filters use an inlet pipe that extends to the bottom of the tank to suck up sediment such as waste. The oil collection section is located on the inlet pipe near the water surface to collect the oil film. The water pump is located outside the tank and connected to the filtration section. This requires adding water and starting the filter during filtration to prevent overheating and damage to the pump. Furthermore, the internal filtration section of most wall-mounted filters consists of multiple interconnected filter chambers, each containing filter media. Water is pumped and pressurized, then filtered through the media in each chamber before flowing back into the tank through the outlet. This complex structure makes them inconvenient to use. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a waterfall-type external filter that is simple in structure, easy to use, and does not require water to be added when the filter is started.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a waterfall-type external filter, including a filter housing with an opening at the top, a mounting part on the filter housing for mounting the filter housing on an aquaculture tank, a filter module inside the filter housing, a water passage gap between the filter module and the filter housing, a water supply device installed on the filter housing that can extend into the aquaculture tank to deliver water to the top of the filter module, a waterfall-type water outlet device at the top of the filter housing for guiding the water inside the filter housing into the aquaculture tank; and an oil film absorption device installed on the water supply device.

[0005] As a preferred technical solution, the water supply device includes a water supply cylinder, the filter housing and the water supply cylinder are respectively located on both sides of the mounting part, the upper part of the water supply cylinder is detachably connected to the filter housing, the bottom of the water supply cylinder is provided with a water suction hole, a water supply pump is provided inside the water supply cylinder, the water inlet of the water supply pump is connected to the water suction hole, and a water supply channel is provided inside the water supply cylinder that connects the water outlet of the water supply pump to the top of the filter module.

[0006] As a preferred technical solution, the water inlet cylinder includes an upper cylinder, a middle cylinder, and a lower cylinder that are detachably connected from top to bottom. The upper cylinder is detachably connected to the filter housing. The water pump is located in the middle cylinder, and the water channel is located in the upper cylinder. The lower end of the water channel is connected to the outlet of the water pump, and the upper end extends to the top of the filter module. The bottom of the lower cylinder is provided with grid-shaped water suction holes.

[0007] As a preferred technical solution, the oil film absorption device includes an oil film chamber connected to the inlet of a water pump inside an upper water cylinder, an oil film suction port connected to the oil film chamber on the side of the upper water cylinder, and an oil film regulating device inside the oil film chamber.

[0008] As a preferred technical solution, the oil film suction port includes a main suction port and a secondary suction port, with the secondary suction port located on the side of the upper water cylinder away from the waterfall-type water outlet.

[0009] As a preferred technical solution, the oil film adjusting device includes an inlet pipe connected to the inlet of the upper water pump. The inlet pipe is respectively provided with a water inlet that connects to the water suction hole and an oil suction port that connects to the oil film chamber. An adjusting plate is provided at the water inlet. A slider is slidably provided on the upper water cylinder to drive the adjusting plate to move back and forth to adjust the opening size of the water inlet.

[0010] As a preferred technical solution, the oil film compartment is provided with a mounting part for installing a germicidal lamp.

[0011] As a preferred technical solution, the waterfall-type water outlet device includes a water outlet trough at the top of the filter housing that communicates with the inner cavity of the filter housing, and a guide plate that slopes outward and downward at the bottom of the water outlet trough.

[0012] As a preferred technical solution, the middle part of the guide plate is provided with a concave guide arc surface, and the height difference between the bottom of the water outlet trough and the water outlet end of the water supply device is not less than 60mm.

[0013] As a preferred technical solution, the system includes a physical filter chamber filled with physical filter media and a biological filter chamber filled with biological filter media. The physical filter chamber and the biological filter chamber are detachably snapped together. The physical filter chamber and the biological filter chamber are removably and placeably disposed inside the filter housing. Water passage gaps are left between the bottom and sides of the physical filter chamber and the filter housing. A rain guide plate is provided on the top of the physical filter chamber.

[0014] The waterfall-style external filter, employing the aforementioned technical solution, includes a filter housing with an open top. The filter housing has a mounting section for attaching it to an aquarium. A filter module is installed inside the filter housing, with a water passage gap between the filter module and the filter housing. A water supply device is installed on the filter housing, extending into the aquarium to deliver water to the top of the filter module. A waterfall-style water outlet device is located at the top of the filter housing to guide water from the filter housing into the aquarium. An oil film absorption device is also provided on the water supply device. In use, the filter module is placed inside the filter housing, and the filter is installed on the tank wall via the mounting part. The water supply device extends into the water in the tank, and water is supplied to the top of the filter module through the water supply device. After the filter module filters out impurities and oil, the water flows up through the gap between the filter module and the filter housing to the waterfall-style outlet at the top of the filter housing and returns to the tank. Since the water supply device is located inside the water, this filter does not require water to cool down or lubricate when starting, and will not be damaged by overheating. At the same time, the filter module is set inside the filter housing, and water enters from the top of the filter module, filters, and overflows from the bottom, flowing back into the tank. The filter has a simple structure and is easy to use. Attached Figure Description

[0015] The following figures are intended only to illustrate and explain the present invention and do not limit the scope of the present invention. Wherein:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the present invention;

[0018] Figure 3 This is a longitudinal sectional view of the present invention;

[0019] Figure 4 This is an exploded view of the present invention.

[0020] Figure 5 This is a schematic diagram of the water inlet cylinder structure of this utility model.

[0021] In the diagram: 1-Filter housing; 2-Top cover; 3-Water passage gap; 4-Upper water cylinder; 41-Upper cylinder; 42-Middle cylinder; 43-Lower cylinder; 5-Water suction hole; 6-Water pump; 7-Water channel; 8-Baffle; 9-Guide channel; 10-Plug; 11-Slot; 12-Oil film chamber; 13-Oil film suction port; 131-Main suction port; 132-Secondary suction port; 14-Water inlet pipe; 141-Water suction port; 142-Oil suction port; 15-Adjusting plate; 16-Slider; 17-Oil film chamber; 18-Water chamber; 19-Installation part; 20-Water outlet channel; 21-Guide plate; 22-Guide arc surface; 23-Filter module; 231-Physical filtration chamber; 232-Biochemical filtration chamber; 24-Rain guide plate; 25-Hanging groove; 26-Adjusting steps. Detailed Implementation

[0022] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that in the drawings, the same reference numerals are assigned to components that are substantially the same in structure and function, and redundant descriptions of substantially the same components have been omitted to make the description more concise.

[0023] like Figure 1-4 As shown, the waterfall-style external filter includes a filter housing 1 with an opening at the top, and a top cover 2 covering the opening of the filter housing 1. The filter housing 1 has a mounting part for mounting it onto an aquarium. A filter module 23 is installed inside the filter housing 1, with a water passage gap 3 between the filter module 23 and the filter housing 1. A water supply device is installed on the filter housing 1, extending into the aquarium to deliver water to the top of the filter module 23. A waterfall-style water outlet device is located at the top of the filter housing 1 to guide the water from inside the filter housing 1 into the aquarium. An oil film absorption device is installed on the water supply device. The filter module 23 can be inserted into the inner cavity of the filter housing 1 for easy and quick replacement. In use, the filter is installed on the top of the aquaculture tank wall via the mounting part. The filter housing 1 and filter module 23 are located on the outside of the aquaculture tank, while the water supply device is located inside the aquaculture tank. The filtered water is circulated to the waterfall-style water outlet at the top of the filter housing 1 by using the water passage gap 3. The waterfall-style water outlet and the water supply device are located on the same side of the filter housing 1, which facilitates the return of the filtered water to the aquaculture tank. This structure can also eliminate the need for a water-turning plate structure, reducing the difficulty of molding and assembly costs.

[0024] like Figure 2-5As shown, the water supply device includes a water supply cylinder 4. The filter housing 1 and the water supply cylinder 4 are located on both sides of the mounting part. The upper part of the water supply cylinder 4 is detachably connected to the filter housing 1. A water suction hole 5 is provided at the bottom of the water supply cylinder 4. A water supply pump 6 is provided inside the water supply cylinder 4. The water inlet of the water supply pump 6 is connected to the water suction hole 5. A water supply channel 7 is provided inside the water supply cylinder 4, which connects the water outlet of the water supply pump 6 to the top of the filter module 23. Furthermore, the water supply cylinder 4 can be composed of an upper cylinder 41, a middle cylinder 42, and a lower cylinder 43, which are detachably connected from top to bottom. The upper cylinder 41, middle cylinder 42, and lower cylinder 43 can be connected together by plugging or snapping, making the water supply part of the filter easy to assemble and disassemble, convenient to use, and conducive to production. It also facilitates the adjustment of the length of the water supply part to adapt to aquaculture tanks of different heights. The upper cylinder 41 is detachably connected to the filter housing 1. It can be provided with a downward-extending plug 10 on the top of the upper cylinder 41 near the filter housing 1, and a slot 11 on the filter housing 1 with an upward-facing groove to accommodate the plug 10. Alternatively, it can be provided with an upward-extending plug 10 on the filter housing 1 near the upper cylinder 41, and a slot 11 on the upper cylinder 41. The connector 10 is inserted into the slot 11 with its opening facing downwards, but other commonly used connection methods can also be used. The upper water pump 6 is located inside the middle cylinder 42. The upper water pump 6 and the pump mounting point divide the interior of the middle cylinder 42 into upper and lower parts. When in use, the upper water cylinder 4 is inserted into the water, and the upper water pump 6 is built in. No water is needed for cooling and lubrication when starting, and the upper water pump 6 will not be damaged due to overheating. The upper water channel 7 is located inside the upper cylinder 41. The lower end of the upper water channel 7 is connected to the outlet of the upper water pump 6, and the upper end extends to the top of the filter module 23. The upper water channel 7 can be divided by a partition 8 set inside the upper cylinder 41, and the top of the upper water channel 7 can be provided with a guide groove 9 that extends into the inner side of the top of the filter housing 1 to guide water to the upper side of the filter module 23. The bottom of the lower cylinder 43 is provided with a grid-shaped water suction hole 5.

[0025] like Figure 3-5As shown, the oil film absorption device includes an oil film chamber 12 connected to the inlet of a water pump 6 inside an upper water cylinder 4. The oil film chamber 12 can be divided by a partition 8 inside the upper cylinder 41. An oil film suction port 13 connected to the oil film chamber 12 is provided on the side of the upper water cylinder 4. An oil film adjusting device is provided inside the oil film chamber 12. The oil film adjusting device includes an inlet pipe 14 connected to the inlet of the water pump 6. The inlet pipe 14 is provided with a suction port 141 connected to a suction hole 5 and an oil suction port 142 connected to the oil film chamber 12. An adjusting plate 15 is provided at the suction port 141. A slider 16 is slidably mounted on the upper water cylinder 4 to drive the adjusting plate 15 to reciprocate and adjust the opening size of the suction port 141. Thus, by adjusting the suction force at the bottom suction port 141, the suction force at the oil suction port 142 is indirectly affected, thereby achieving the suction force of the oil film suction port 13. The oil film regulating device can also be configured with a ball valve on the pipe body of the water inlet pipe 14 located on the side of the water inlet 141 or the oil inlet 142, with the valve handle extending out of the outer side of the upper water cylinder 4. Since the upper water pump 6 is located inside the middle cylinder 42, the water inlet pipe 14 is also located inside the middle cylinder 42. Thus, the oil film regulating device is located on the middle cylinder 42. The middle cylinder 42 is also provided with an oil film chamber 17 and an upper water chamber 18 that communicate with the oil film tank 12 and the upper water channel 7, respectively. The oil inlet 142 of the water inlet pipe 14 is connected to the oil film chamber 17, the outlet of the upper water pump 6 is connected to the upper water chamber 18, and the water inlet 141 of the water inlet pipe 14 is connected to the lower cylinder 43. Furthermore, the oil film suction port 13 includes a main suction port 131 and a secondary suction port 132. The secondary suction port 132 is located on the side of the upper water cylinder 4 away from the waterfall-type water outlet device. This minimizes the impact of the water flow from the waterfall-type water outlet device on the water surface and the oil film removal process.

[0026] like Figure 3-5 As shown, the oil film chamber 12 is provided with a mounting part 19 for installing a germicidal lamp, such as a mounting slot, for installing a UV germicidal lamp to sterilize and disinfect the flowing water. The waterfall-style water outlet device includes a water outlet trough 20 connected to the inner cavity of the filter housing 1 at the top of the filter housing 1. The bottom of the water outlet trough 20 is provided with a guide plate 21 that slopes outward and downward. Since the waterfall-style water outlet device and the water supply device are located on the same side of the filter housing 1, the guide plate 21 is also located on the same side of the filter housing 1 as the water supply cylinder 4, both located on one side of the aquaculture tank. Furthermore, the middle part of the guide plate 21 is provided with a concave guide arc surface 22. In this way, water flows obliquely downward from the water outlet trough 20 and is guided by the guide arc surface 22 to form a waterfall-like flow that flows obliquely forward into the aquaculture tank. The height difference between the bottom of the water outlet trough 20 and the water outlet end of the water supply device is not less than 60mm, that is, the height difference between the bottom of the water outlet trough 20 and the top of the water supply channel 7 is not less than 60mm, to ensure the overall water flow drop and achieve the ideal dry and wet separation effect. According to the volume of the filter and the usage environment, it is preferable to set the height difference between the bottom of the water outlet trough 20 and the top of the water supply channel 7 to be 60mm.

[0027] like Figure 2 and Figure 3 As shown, the filtration module 23 includes a physical filter chamber 231 filled with physical filter media and a biological filter chamber 232 filled with biological filter media. The physical filter chamber 231 and the biological filter chamber 232 are detachably snapped together. The physical filter chamber 231 and the biological filter chamber 232 are removably and placeably disposed within the filter housing 1. A water passage gap 3 is left between the bottom and sides of the physical filter chamber 231 and the filter housing 1. A rain guide plate 24 is provided on the top of the physical filter chamber 231. The physical filter chamber 231 is used to fill physical filter media such as filter cotton, and the biological filter chamber 232 is used to fill biological filter media such as activated carbon, quartz sand, ceramic rings, and biochemical cotton. The physical filter chamber 231 and the biological filter chamber 232 can be movably placed inside the filter housing 1 and have a water passage gap 3 between them and the filter housing 1. Preferably, the physical filter chamber 231 and the biological filter chamber 232 have a water passage gap 3 between them and the bottom of the filter housing 1 and the side near the water outlet 20, so that the filtered water can flow into the breeding tank through the water outlet 20 and the guide plate 21.

[0028] like Figure 3 and Figure 4 As shown, the mounting part can adopt a mounting groove 25 provided on the side of the filter housing 1. The groove 25 has its opening facing downwards, and the bottom of the groove 25 is provided with an adjustable step 26 that fits with the aquaculture tank wall during mounting. In use, this utility model only requires inserting the top of the aquaculture tank wall into the mounting groove 25. The adjustable step 26 allows the mounting groove 25 to be used for mounting aquaculture tanks with different wall thicknesses. The wires of electrical appliances such as the water pump 6 can be routed through the gap between the filter housing 1 and the water inlet cylinder 4.

[0029] like Figure 1-5As shown, in use, the filter module 23 filled with filter cotton and ceramic rings is placed on the filter housing 1. A rain guide plate 24 is placed on top of the filter module 23, and the top cover 2 is placed on top. The filter is installed on the top of the aquarium wall through the mounting groove 25, so that the filter housing 1 is located outside the aquarium. The upper water cylinder 4 is inserted into the water in the aquarium. The upper water pump 6 is started, and the water in the aquarium enters the lower cylinder 43 through the grid-like water intake holes 5 at the bottom of the lower cylinder 43. Then, the water flows into the filter module 23 through the water intake port 141, the water inlet pipe 14, the upper water pump 6, the upper water chamber 18, the upper water channel 7, the guide groove 9, and the rain guide plate 24. The water undergoes physical filtration by the filter cotton and biological filtration by the ceramic rings. The water then flows out from the bottom of the filter module 23, and then overflows through the water passage gap 3, overflowing from the water outlet 20 and flowing downwards. It is then guided by the guide arc surface 22 to form a waterfall-like flow that flows forwards into the aquarium. The oil film on the surface of the water in the aquarium enters the water inlet pipe 14 through the oil film inlet 13, oil film chamber 12, oil film cavity 17, and oil inlet 142. It then enters the filtration cycle together with the water sucked in by the water inlet 141. The opening size of the water inlet 141 can be adjusted by moving the adjusting plate 15 back and forth by sliding the slider 16. The absorption of the oil film is adjusted by indirectly adjusting the suction at the oil inlet 142 by adjusting the suction at the bottom water inlet 141.

[0030] It should be understood that the terms indicating orientation or positional relationship in this utility model are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, or an indirect connection through an intermediate medium, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form a structure that can be understood by those skilled in the art.

Claims

1. A waterfall-style external filter, comprising a filter housing with an opening at the top, wherein the filter housing is provided with a mounting part for mounting the filter housing on an aquarium, characterized in that: The filter housing is equipped with a filter module, and there is a water passage gap between the filter module and the filter housing. The filter housing is equipped with a water supply device that can extend into the breeding tank to deliver water to the top of the filter module. The top of the filter housing is equipped with a waterfall-style water outlet device that guides the water in the filter housing into the breeding tank. The water supply device is equipped with an oil film absorption device.

2. The waterfall-type external filter as described in claim 1, characterized in that: The water supply device includes a water supply cylinder. The filter housing and the water supply cylinder are located on both sides of the mounting part. The upper part of the water supply cylinder is detachably connected to the filter housing. A water suction hole is provided at the bottom of the water supply cylinder. A water supply pump is provided inside the water supply cylinder. The water inlet of the water supply pump is connected to the water suction hole. A water supply channel is provided inside the water supply cylinder, connecting the water outlet of the water supply pump to the top of the filter module.

3. The waterfall-type external filter as described in claim 2, characterized in that: The water inlet cylinder includes an upper cylinder, a middle cylinder, and a lower cylinder that are detachably connected from top to bottom. The upper cylinder is detachably connected to the filter housing. The water pump is located in the middle cylinder, and the water channel is located in the upper cylinder. The lower end of the water channel is connected to the outlet of the water pump, and the upper end extends to the top of the filter module. The bottom of the lower cylinder is provided with grid-shaped water suction holes.

4. The waterfall-type external filter as described in claim 2, characterized in that: The oil film absorption device includes an oil film chamber inside the upper water cylinder that is connected to the inlet of the upper water pump, an oil film suction port on the side of the upper water cylinder that is connected to the oil film chamber, and an oil film regulating device inside the oil film chamber.

5. The waterfall-type external filter as described in claim 4, characterized in that: The oil film suction port includes a main suction port and a secondary suction port, with the secondary suction port located on the side of the upper water cylinder away from the waterfall-style water outlet.

6. The waterfall-type external filter as described in claim 4, characterized in that: The oil film adjusting device includes an inlet pipe connected to the inlet of the upper water pump. The inlet pipe is respectively provided with a water inlet that connects to the water suction hole and an oil suction port that connects to the oil film chamber. An adjusting plate is provided at the water inlet. A slider is slidably provided on the upper water cylinder to drive the adjusting plate to move back and forth to adjust the opening size of the water inlet.

7. The waterfall-type external filter as described in claim 4, characterized in that: The oil film compartment is equipped with a mounting section for installing germicidal lamps.

8. The waterfall-type external filter as described in claim 1, characterized in that: The waterfall-style water outlet device includes a water outlet trough at the top of the filter housing that communicates with the inner cavity of the filter housing, and a guide plate that slopes outward and downward at the bottom of the water outlet trough.

9. The waterfall-type external filter as described in claim 8, characterized in that: The guide plate has a concave guide arc surface in the middle, and the height difference between the bottom of the water outlet trough and the water outlet end of the water supply device is not less than 60mm.

10. The waterfall-type external filter as described in any one of claims 1-9, characterized in that: The filtration module includes a physical filter chamber filled with physical filter media and a biological filter chamber filled with biological filter media. The physical filter chamber and the biological filter chamber are detachably snapped together. The physical filter chamber and the biological filter chamber are detachably installed inside the filter housing. Water passage gaps are left between the bottom and sides of the physical filter chamber and the filter housing. A rain guide plate is provided on the top of the physical filter chamber.

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