CN216601310U - Device for preventing fish tank from sucking fine particles and fish tank - Google Patents

Abstract

The utility model relates to a device for preventing a fish tank from sucking fine particles and the fish tank, which belong to the technical field of animal feeding or breeding devices, in particular to a fish breeding device, comprising: a chamber having a bottom suction port and a water outlet; the bottom suction port is arranged on the side wall of the cavity and is at least one vertical strip-shaped hole; the water blocking piece is arranged at the position of the strip-shaped hole and can selectively block the lower half part of the strip-shaped hole; and fluid in the cylinder body enters the cavity through the bottom suction port and flows out of the cavity from the water outlet. The bottom suction port of the utility model can suck excrement, food residue and other dirt at the bottom of the fish tank and can also block bottom sand or other particles, and the water inlet position of the bottom suction port can be adjusted according to the requirement.

Description

Device for preventing fish tank from sucking fine particles and fish tank

Technical Field

The utility model belongs to the technical field of animal feeding or breeding devices, particularly relates to the technical field of fish feeding or breeding devices, and particularly relates to a device for preventing a fish tank from sucking fine particles and the fish tank.

Background

At present, in a traditional water pumping device or a filtering device for a fish tank, a bottom suction port is generally attached to the bottom of the fish tank, and excrement, food residues and the like falling on the bottom of the fish tank can be sucked in the filtering circulation process. However, due to the suction force, the bottom sand or other objects near the bottom suction port are inevitably sucked.

SUMMERY OF THE UTILITY MODEL

In view of the above analysis, the present invention provides a device for preventing a fish tank from sucking fine particles and a fish tank, so as to solve the problems in the prior art.

The purpose of the utility model is realized as follows:

an apparatus for preventing a fish tank from sucking fine particles, comprising: a chamber having a bottom suction port and a water outlet;

the bottom suction port is arranged on the side wall of the cavity and is at least one vertical strip-shaped hole;

the water blocking piece is arranged at the position of the strip-shaped hole and can selectively block the lower half part of the strip-shaped hole;

and fluid in the cylinder body enters the cavity through the bottom suction port and flows out of the cavity from the water outlet.

The strip-shaped holes can prevent larger objects, such as fish tank scenery, aquatic plants or small fishes from being sucked.

The lower half parts of the strip-shaped holes can be selectively blocked to selectively close the lower half parts of the strip-shaped holes to feed water as required, so that the fish tank sand is prevented from being sucked; when no fish tank sand exists, the lower half part of the fish tank can not be blocked, so that the dirt suction capacity is improved.

In a preferred embodiment of the present invention, the water blocking member is a sliding plate provided to slide in the vertical direction along the strip-shaped hole.

Through the sliding plate sliding arrangement, the water inlet position can be selected as required, for example, when bottom sand does not exist or sundries do not exist at the bottom of the fish tank body, the excrement, food residues and the like at the bottom of the fish tank can be thoroughly cleaned by selecting the water inlet at the lower part, when the bottom sand and particles exist at the bottom of the fish tank body, the sliding plate blocks the water inlet at the lower part, so that the water inlet is not close to the bottom of the fish tank body, and the bottom sand or objects near other bottom suction ports are prevented from being sucked.

In a preferred embodiment of the present invention, the water blocking member is a foldable or stretchable flexible material, and has a lower end fixed to the lower end of the strip-shaped hole and an upper end serving as a free end.

The water retaining piece can open the bar hole better through flexible material, and when the water retaining piece was folding or the compression was when bar hole lower extreme, the bar hole had the biggest through-flow area, when bottom sunction inlet was sheltered from to needs, the upper end of tensile water retaining piece in order to extend the water retaining piece, because the effect of suction, can be adsorbed after the flexible water retaining piece reachd the position and fix at the current position.

In a preferred embodiment of the present invention, a first filter material portion is disposed in the cavity, the first filter material portion is located between the bottom suction port and the water outlet, and a settling chamber is formed between the first filter material portion and the bottom suction port.

The bottom suction port and the water outlet can be arranged in the vertical direction or in the left-right direction; can block inhaled excrement and urine, food waste etc. in the precipitation chamber through first filter media portion, be convenient for subsequent unified clearance.

In a preferred embodiment of the present invention, the sedimentation chamber is provided with a sewage outlet, and the bottom of the sedimentation chamber has a surface inclined toward the sewage outlet.

The settled sewage can slide into the position near the sewage outlet under the action of gravity due to the arrangement of the inclined plane, so that the sewage can be conveniently cleaned in time without wasting water.

According to a preferred embodiment of the utility model, the sewage outlet is connected with a vertical sewage discharge pipe, and the height of the vertical sewage discharge pipe is higher than the water level of the fish tank; the angle between the vertical sewage draining pipe and the wall of the fish tank is adjustable.

The vertical sewage draining pipe can be a hard pipe or a hose, and water can be prevented from overflowing when the vertical sewage draining pipe is higher than the water level.

The angle is adjustable, namely the vertical sewage discharge pipe can swing in the direction far away from or close to the fish tank, so that sewage can be discharged conveniently, and the discharge speed and the discharge direction are controlled in an angle-adjustable mode; meanwhile, the inflow pressure in the sedimentation cavity can force sewage discharge, and sewage is discharged under the action of water pressure.

In a preferred embodiment of the present invention, the aquarium also includes a fluid passage through which the bottom suction opening introduces fluid into the aquarium near the surface of the first filter media portion.

The "surface" here is the surface that the fluid first contacts through the filter.

The "fluid passage" may be a structure of the filter housing or may be a separate component.

The filter element can be close to the surface of the first filter element part, and can also have a relatively small distance, so long as inflow water can be washed to the surface of the first filter element part, the closer the distance is, the better the washing effect is, and meanwhile, the disturbance of bottom sediment dirt is not caused, that is, the filter element can be understood as being close to the surface.

The sucked fluid is continuously filtered by the filter material, and meanwhile, the filter material is continuously washed away, so that blockage is prevented, and the times of manually cleaning the filter material are reduced.

In a preferred embodiment of the present invention, the filter further includes a second filter portion located downstream of the first filter portion.

The second filter part may or may not be located in the same cavity as the first filter part, and the second filter part may be provided to filter the fluid twice, for example, more finely or to eliminate harmful components in the water.

The utility model also relates to a fish tank comprising the device and a tank body.

In a preferred embodiment of the utility model, a part of the bottom wall or a part of at least one side wall of the cylinder is the bottom wall or at least one side wall of the device.

Through setting up filter and cylinder body wall sharing partly wall, can be so that cylinder body and filter be overall structure for the fish bowl outward appearance is more level and more smooth, also prevents that the inconsistent glass atress of roughness is inhomogeneous easy to damage simultaneously.

Compared with the prior art, the utility model can at least realize the following beneficial effects:

the bottom suction port of the utility model can suck excrement, food residue and other dirt at the bottom of the fish tank and can also block bottom sand or other particles, and the water inlet position of the bottom suction port can be adjusted according to the requirement.

Drawings

In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present specification, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view showing the upward sliding position of the sliding plate in fig. 1.

FIG. 3 is a schematic structural view of another embodiment of the water guard plate.

Fig. 4 is a schematic structural view of the suction device of the present invention.

Fig. 5 is a schematic structural view of the filtering apparatus according to the present invention.

Fig. 6 is an enlarged schematic view of the present invention at a.

Fig. 7 is a schematic structural diagram of another embodiment of the present invention.

FIG. 8 is a schematic structural view of FIG. 7 with the conduit and the first filter removed.

Fig. 9 is a schematic structural view of the fish tank of the present invention.

Fig. 10 is a schematic top view of the fish tank of the present invention.

Reference numerals:

1. a sedimentation chamber; 2. a surface suction port connecting pipe; 3. a bottom suction port connecting pipe; 3-1, a bottom suction port; 3-2, a water retaining piece; 4. an inclined bottom wall; 5. a sewage draining outlet; 6. a sponge bin; 7. a water outlet; 8. a biochemical bin; 8-1, a first baffle; 8-2 and a second baffle; 9. a biochemical filter material; 10. a water pump bin; 11. a heater; 12. a pump body; 13. a UV germicidal lamp; 14. a water outlet of the water pump bin; 15. a top cover; 16. a cylinder body; 17. a water level; 18. opening the gap; 19. a blow-off pipe; 20. fixing the clamp; 21. a connector is provided.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

For the purpose of facilitating understanding of the embodiments of the present application, the following description will be made in terms of specific embodiments with reference to the accompanying drawings, which are not intended to limit the embodiments of the present application.

The first embodiment is as follows:

one embodiment of the present invention, as shown in fig. 1, discloses an apparatus for preventing a fish tank from sucking fine particles, comprising: a chamber having a bottom suction port 3-1 and a water outlet 7;

the bottom suction opening 3-1 is arranged on the side wall of the cavity and is at least one vertical strip-shaped hole;

a water blocking piece 3-2 is arranged at the position of the strip-shaped hole, and the water blocking piece 3-2 can selectively block the lower half part of the strip-shaped hole;

the fluid in the cylinder body enters the cavity through the bottom suction port 3-1 and flows out of the cavity through the water outlet 7.

Particularly, the width of the strip-shaped hole ensures that the water grass mud, the water tank and the small fish are not passed through.

Preferably, the water blocking member is a sliding plate which is slidably disposed along the strip-shaped hole in the up-down direction.

Specifically, the surface of the sliding plate close to the strip-shaped holes is coated with magnetic powder, or is a magnet surface, or is a magnetized metal material, and at least the strip-shaped holes in the cavity are made of a magnetic material.

As an alternative, the two sides of the sliding plate are provided with bulges, the two side surfaces of the strip-shaped hole are provided with grooves, and the sliding plate is in sliding fit with the grooves through the bulges.

Referring to fig. 3, as an alternative, the water blocking member 3-2 is a foldable or stretchable flexible material, the lower end of which is fixed to the lower end of the strip-shaped hole, and the upper end of which is a free end.

In order to facilitate the adjustment of the water blocking member 3-2, the water blocking member 3-2 is disposed on the outer surface of the cavity.

When bottom sand or water grass mud is not arranged at the bottom of the fish tank, in order to improve the sewage discharge efficiency, the plate-shaped water retaining piece 3-2 slides upwards, or the folded water retaining piece 3-2 is folded downwards to leak out of the lower half part of the strip-shaped hole, so that deposited sewage is quickly sucked. When bottom sand or water grass mud is paved at the bottom of the fish tank, in order to prevent the suction of the bottom sand or the water grass mud, the plate-shaped water retaining piece 3-2 is slid downwards, or the folded water retaining piece is stretched upwards to shield the lower half part of the strip-shaped hole, so that fluid enters through the hole of the upper half part.

Preferably, a first filter material part is arranged in the cavity, the first filter material part is positioned between the bottom suction port 3-1 and the water outlet 7, and a precipitation cavity 1 is formed between the first filter material part and the bottom suction port 3-1.

As an application scenario, the device is a suction device, which is placed into the aquarium body through a pipeline, and the water inlet position is adjusted according to the situation through an adjusted water blocking member, as shown in fig. 4.

As an application scenario, as shown in fig. 5, the device is a filtering device, which is placed in a tank body of a fish tank to perform repeated filtering treatment on a water body.

Referring to fig. 1-3 and 5, preferably, the settling chamber 1 is provided with a sewage outlet 5, and the bottom of the settling chamber is provided with a surface inclined to the sewage outlet. The inclined surface may be a detachable inclined plate or a part of the bottom wall, i.e. the inclined bottom wall 4.

Preferably, referring to fig. 9, the sewage outlet 5 is connected with a vertical sewage pipe 19, and the height of the vertical sewage pipe 19 is higher than the water level 17 of the fish tank; the vertical sewage draining pipe 19 is adjustable in angle relative to the wall of the fish tank.

The vertical sewage draining pipe 19 can be a hard pipe or a hose, and water can be prevented from overflowing when the water level is higher than the water level.

The discharging speed and the discharging direction are controlled in an angle-adjustable mode; as the water flow is continuously pumped into the water pump chamber 10 from the sedimentation chamber 1, a continuous pressure difference is formed, and the water enters the sedimentation chamber 1 from the surface suction inlet and the bottom suction inlet of the physical filter chamber. Meanwhile, the sewage discharge can have a forced effect due to the inflow pressure in the sedimentation cavity 1, and the sewage is promoted to be discharged under the action of water pressure.

Preferably, the fish tank further comprises a fluid channel, and the bottom suction opening 3-1 introduces fluid in the fish tank to the surface close to the first filter material part through the fluid channel.

Preferably, the first filter part is arranged above the sedimentation cavity 1, so that excrement, food residues and other dirt can be conveniently and quickly sedimentated after being blocked.

Specifically, in order to improve the effect of removing the dirt, the dirt discharge opening 5 is formed in the settling chamber 1 near the bottom and on the side wall.

The first filter material part can be arranged in the bin, and the bottom of the bin is provided with an opening, so that fluid can smoothly flow through the first filter material part through the opening at the bottom and then flows out.

Preferably, the fish tank also comprises at least one surface suction port, the surface suction port is arranged at a position close to the water surface of the fish tank, and the bottom suction port 3-1 is arranged at the bottom or the side wall of the precipitation cavity 1.

The pipe fitting is connected with a water inlet (the water inlet can be surface suction, bottom suction or perforation suction from the middle of the chamber), leads water flow into the middle of the filter bin, and places a physical filter medium above the water flow. The water flow has a certain scouring effect on the filter medium, and prevents a large amount of excrement, food residues and the like from being attached to the surface of the filter medium. Meanwhile, excrement, food residues and the like sink to the slope (or funnel shape) at the bottom due to self weight and then are gathered near the sewage draining outlet.

Generally speaking, particulate matters such as silt, water plant mud and the like are arranged in the fish tank, and when the bottom suction port 3-1 is arranged at the bottom of the sedimentation cavity 1, the height of the bottom wall of the sedimentation cavity is ensured to be larger than the laying thickness of the particulate matters such as silt, water plant mud and the like.

The bottom suction port 3-1 is arranged on the side wall, and the height of the bottom suction port 3-1 is ensured to be larger than the laying thickness of particles such as silt, water plant mud and the like.

Specifically, the surface suction port and the bottom suction port 3-1 are both introduced into the interior of the sedimentation chamber 1 through a fluid passage, and the fluid outlet is close to the bottom surface of the first filter medium.

The fluid passage may be part of the filter housing or may be a separate conduit.

The surface suction opening can be arranged on the filter shell or can be an inflow opening of the pipeline. For example, the tubing may extend away from the filter such that the mouthpiece is near the center of the aquarium, as long as the tubing directs fluid into settling chamber 1.

Specifically, the facial suction port is introduced into the interior of the precipitation chamber 1 through the facial suction port connection tube 2, and the bottom suction port 3-1 is introduced into the interior of the precipitation chamber 1 through the bottom suction port connection tube 3.

Referring to fig. 2, it is preferable that a water blocking member 3-2 is provided at the bar-shaped hole, and the water blocking member 3-2 selectively blocks a lower half of the bar-shaped hole.

For example, the water blocking piece 3-2 can be a plate-shaped structure, the water blocking piece is connected with two sides of the strip-shaped hole in a sliding mode through a clamping groove and a convex matching structure, and the water blocking piece 3-2 is arranged on the outer wall of the sedimentation cavity 1 to guarantee the convenience of operation of people. For another example, the water stop 3-2 may be a retractable folding curtain, which is folded in the original state and can be pulled up so that it is completely unfolded to block the lower half of the strip-shaped hole. When bottom sand or water grass mud is not arranged at the bottom of the fish tank, in order to improve the sewage discharge efficiency, the plate-shaped water retaining piece 3-2 slides upwards, or the folded water retaining piece 3-2 is folded downwards to leak out of the lower half part of the strip-shaped hole, so that deposited sewage is quickly sucked. When bottom sand or water grass mud is paved at the bottom of the fish tank, in order to prevent the suction of the bottom sand or the water grass mud, the plate-shaped water retaining piece 3-2 is slid downwards, or the folded water retaining piece is stretched upwards to shield the lower half part of the strip-shaped hole, so that fluid enters through the hole of the upper half part.

Referring to fig. 7, preferably, the filter further includes a second filter material portion, and the second filter material portion is located at a downstream position of the first filter material portion; the sedimentation cavity 1 is formed between the second filter material part and the first filter material part.

Specifically, in order to prevent the fluid from directly entering the second filter medium portion, the density of the second filter medium portion is higher than that of the first filter medium portion, so that the resistance to the fluid entering the first filter medium portion is lower than that of the second filter medium portion.

As an alternative, the water-tight arrangement between the second material portion and the settling chamber 1 may be a water-tight material or a separate wall. More preferably, the second filter unit is provided in a separate chamber.

In order to comprehensively filter impurities and harmful substances in water, the first filter material part can be sponge and is used for filtering fish excrement, food residues and other particle impurities; the second filter material part can be a biochemical filter material and can remove ammonia nitrogen dissolved in water. Specifically, the second filter member may be limestone, coral bone, or vesuvianite. The second filter material part is of a bulk material structure.

The first filter medium portion and the second filter medium portion are not limited to one, and may be a plurality of filter medium portions or a plurality of filter medium portions.

Preferably, the filter further comprises a sterilizer 13 and/or a heater 11, and the sterilizer 13 and/or the heater 10 are located at a position downstream of the second filter material part.

Specifically, the sterilizer 13 is a UV germicidal lamp.

Preferably, the sterilizer 13 and/or the heater 11 may be disposed in separate chambers. In order to extend the filtering length of the fluid in the second filter material portion, the fluid path in the chamber through the second filter material portion into the sterilizer 13 and/or the heater 11 is in the thickest direction of the second filter material portion, that is, if the height of the second filter material portion is greater than the width, the fluid should flow from the top to the bottom of the second filter material portion into the sterilizer and/or heater chamber; if the height of the second filter material section is smaller than the width direction, the fluid flows into the sterilizer and/or heater chamber from the width direction of the second filter material section.

Specifically, referring to fig. 7 to 8, the height direction of the second filter material portion of the present invention is greater than the width direction, and at least a part of the fluid outlet of the first filter material portion is disposed above the second filter material portion, and may be entirely disposed above, or may be partially disposed above, and is partially close to the top surface of the second filter material portion, wherein a first baffle 8-1 is disposed between the second filter material portion and the chamber of the sterilizer and/or heater, the top of the first baffle 8-1 is sealed with the top of the chamber of the sterilizer and/or heater, and the bottom has an opening, so that the fluid flowing out from the first filter material portion flows into the chamber of the sterilizer and/or heater from top to bottom after flowing into the second filter material portion from top to bottom.

Specifically, the sponge is disposed in a separate sponge chamber 6, and a water outlet 7 is disposed on the side wall of the sponge chamber 6 close to the second filter material portion, wherein the water outlet 7 may be a porous structure, see fig. 3, or may be an opening, see fig. 8. The water outlet 7 is positioned at the top position of the side wall.

In order to increase the heating efficiency of the fluid, the fluid path of the second filter medium section flowing into the chamber of the sterilizer and/or the heater is not directly introduced into the chamber, that is, the inlet port and the outlet port are not aligned and are provided in a staggered manner.

Preferably, the pump body 12 is arranged in the cavity, the cavity is a water pump bin 10, the sterilizer 13 and the heater 11 are both arranged in the water pump bin 10, and the water pump bin 10 is provided with a water pump bin water outlet 14 which is arranged to the fish tank.

Specifically, referring to fig. 8, a second baffle 8-2 is disposed between the first baffle 8-1 and the chamber of the sterilizer and/or heater, the bottom of the second baffle 8-2 is closed with the bottom wall of the chamber, and the upper portion is open.

Preferably, referring to fig. 9, the sewage draining port 5 is connected with a vertical sewage draining pipe 19, and the height of the vertical sewage draining pipe 19 is higher than the water level 17 of the fish tank; the angle between the vertical sewage draining pipe and the wall of the fish tank is adjustable.

The vertical sewage draining pipe 19 can be a hard pipe or a hose, and water can be prevented from overflowing when the water level is higher than the water level.

The discharging speed and the discharging direction are controlled in an angle-adjustable mode; as the water flow is continuously pumped into the water pump chamber 10 from the sedimentation chamber 1, a continuous pressure difference is formed, and the water enters the sedimentation chamber 1 from the surface suction inlet and the bottom suction inlet of the physical filter chamber. Meanwhile, the sewage discharge can have a forced effect due to the inflow pressure in the sedimentation cavity 1, and the sewage is promoted to be discharged under the action of water pressure.

Specifically, the soil pipe 19 is fixed to the outer wall of the filter by a fixing jig 20.

In order to facilitate the removal and cleaning of the waste pipe 19, the bottom of the waste pipe is connected to the waste outlet 5 via a connector 21.

Although three chambers, physical filtration chamber, biochemical filtration chamber and water pump chamber, are shown in the figure, in practice, a plurality of chambers, such as a plurality of biochemical filtration chambers and a plurality of physical filtration chambers, may be divided.

The second embodiment:

referring to fig. 9-10, the present invention also relates to a fish tank including the filter of one embodiment.

Preferably, a part of the bottom wall or at least a part of the side wall of the aquarium 16 is the bottom wall or at least a side wall of the filter.

By arranging the filter to share a part of wall with the wall of the tank body 16, the tank body 16 and the filter can be of an integral structure, so that the appearance of the fish tank is smoother, and meanwhile, the phenomenon that the glass with inconsistent flatness is stressed and is easy to damage is avoided.

Specifically, one side of the cylinder body 16 is an open structure, and the open structure is fixed with the side wall of the filter with the water outlet in a sealing manner, and can be fixed and waterproof in a hot melting manner, a sealant manner and the like.

The bottom wall of the cylinder 16 is longer than the side walls so that the excess bottom wall portion constitutes the bottom wall of the filter.

Alternatively, the cylinder body 16 is a one-piece cylinder, the bottom wall and a part of three adjacent side walls of the cylinder body form the bottom wall and three adjacent side walls of the filter, and the fourth wall is provided with the water pump chamber outlet 14.

The outlet is preferably positioned above the water level so that the treated fluid falls freely into the tank 16, the arrangement being such as to increase the oxygen content of the water so that the water in the tank as a whole is flowing live water.

Preferably, the filter is provided with a top cover 15 having a depression at which the face suction opening is provided, the depression being located close to the water level so that the depression is able to have water flow into the face suction opening.

Alternatively, the fourth wall is provided with a gap 18 adjacent the top cover 15, the top of the chamber of the second filter media portion is provided with a facial suction opening and the top of the chamber of the second filter media portion is located adjacent the water level.

The face suction opening is arranged at the top of the chamber of the second filter material part to prevent the face suction opening connecting pipe 2 from occupying the space of the sponge chamber 6, which is not beneficial to the placing and taking out of the sponge.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are described in further detail, it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.

Claims (10)

1. A device for preventing a fish tank from sucking fine particles is characterized by comprising: a chamber having a bottom suction port and a water outlet;

the bottom suction port is arranged on the side wall of the cavity and is at least one vertical strip-shaped hole;

the water blocking piece is arranged at the position of the strip-shaped hole and can selectively block the lower half part of the strip-shaped hole;

fluid in the tank body of the fish tank enters the cavity through the bottom suction port and flows out of the cavity through the water outlet.

2. The apparatus of claim 1, wherein the water stop is a sliding plate slidably disposed along the strip-shaped hole in an up-down direction.

3. The device according to claim 1, wherein the water-blocking member is a foldable or stretchable flexible material, and has a lower end fixed to a lower end of the strip-shaped hole and an upper end being a free end.

4. An apparatus according to any one of claims 1 to 3 wherein a first filter material portion is provided within the chamber, the first filter material portion being located between the bottom suction opening and the water outlet, and a settling chamber being formed between the first filter material portion and the bottom suction opening.

5. The device as claimed in claim 4, wherein the settling chamber is provided with a sewage outlet, and the bottom of the settling chamber is provided with a surface inclined towards the sewage outlet.

6. The device as claimed in claim 5, wherein a vertical sewage draining pipe is connected to the sewage draining port, and the height of the vertical sewage draining pipe is higher than the water level of the fish tank; the angle between the vertical sewage draining pipe and the wall of the fish tank is adjustable.

7. An apparatus as claimed in claim 4, further comprising a fluid pathway, the bottom suction opening directing fluid within the aquarium into proximity with a surface of the first filter material portion via the fluid pathway.

8. The device of claim 4 further comprising a second filter section, said second filter section being located downstream of said first filter section.

9. A fish tank comprising an apparatus as claimed in any one of claims 1 to 8 and a tank body.

10. An aquarium according to claim 9, where the part of the bottom wall or at least one side wall of the housing is the bottom wall or at least one side wall of the device.

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