CN213663170U - Fish tank with bottom filtering function - Google Patents

Abstract

The utility model discloses a bottom filtering fish tank, which comprises a transparent cylinder body, a bottom filtering bin arranged at the bottom of the transparent cylinder body and used for filtering water flow and culturing bacteria, and an upper cover bin arranged at the upper part of the transparent cylinder body and used for culturing aquatic plants and sand stones, wherein the lower end of a first pipe body is connected with the water outlet of the bottom filtering bin, and the upper end of the first pipe body is connected with the water inlet connected with the upper cover bin; the lower end of the second pipe body is connected with the water inlet of the bottom filtering bin, and the side wall of the upper end of the second pipe body is provided with a second water inlet hole for water to enter the second pipe body; a first water inlet hole for allowing water in the transparent cylinder body to flow into the third pipe body is formed in the side wall of the lower end of the third pipe body; the bottom filter bin is internally provided with a water pump, the water outlet of the water pump is connected with the first pipe body so as to pump the filtered water flow into the upper cover bin, and the upper cover bin is provided with a water inlet connected with the transparent cylinder body so as to pump the water pumped into the upper cover bin into the transparent cylinder body. Has the advantages of convenient use, convenient desktop culture, good filtering effect, excellent landscape effect and the like.

Description

Fish tank with bottom filtering function

Technical Field

The utility model relates to a lazy people fish bowl technical field, more specifically say, relate to a end filters fish bowl.

Background

The fish tank is a common leisure fish culture item for people, and water in the fish tank needs to be continuously filtered in the fish culture process so as to improve the water quality.

In the existing market, only small-sized fish tanks are single in function, the filtering mode for water quality is single, the effect is relatively weak, a large fish tank above 800 millimeters has a complete filtering system, but the large fish tank is complex in structure, large in occupied space, heavy in weight and not easy to move, high in manufacturing cost and limited in material use, and the large fish tanks are sent to users in later stages in the form of spare parts, so that professional personnel are needed to go to assemble the large fish tanks, and the large fish tanks are complex and inconvenient to use and large in maintenance cost for most small fish-size fish culture.

In addition, the existing desktop type small fish tank basically adopts a back filtering scheme, a top cover filtering scheme, an internal filtering scheme, an external hanging filtering scheme or an external filtering scheme, all the schemes have the characteristics that various diversion water pipes are externally arranged, or a water pump is externally arranged, or the viewing area of the fish tank is shielded, and the landscape effect is seriously influenced for the small fish tank.

Therefore, how to provide a fish tank with convenient use, good filtering effect and good landscape effect is a problem to be solved urgently by the technical personnel in the field at present.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a bottom filtering fish tank that convenient to use, filter effect are good and view effect stick.

In order to achieve the above object, the present invention provides the following technical solutions:

a bottom filtering fish tank comprises a transparent tank body, a bottom filtering bin and an upper cover bin, wherein the bottom filtering bin is arranged at the bottom of the transparent tank body and used for filtering water flow and culturing bacteria, the upper cover bin is arranged at the upper part of the transparent tank body and used for culturing aquatic plants and sand stones, a first pipe body, a second pipe body sleeved outside the first pipe body and a third pipe body sleeved outside the second pipe body are arranged in the transparent tank body;

the lower end of the first pipe body is connected with the water outlet of the bottom filtering bin, and the upper end of the first pipe body is connected with the water inlet of the upper cover bin;

the lower end of the second pipe body is communicated with the water inlet of the bottom filtering bin, and the side wall of the upper end of the second pipe body is provided with a second water inlet hole for water to enter the second pipe body;

a first water inlet hole for allowing water in the transparent cylinder body to flow into the third pipe body is formed in the side wall of the lower end of the third pipe body;

the bottom filter bin is internally provided with a water pump, the water outlet of the water pump is connected with the first pipe body so as to pump filtered water into the upper cover bin, and the upper cover bin is provided with a water inlet connected with the transparent cylinder body so as to make the water pumped into the upper cover bin flow into the transparent cylinder body.

Preferably, the bottom filtering bin comprises a water inlet and outlet bin, a white cotton filtering bin provided with honeycomb filter cloth white cotton, a biochemical cotton filtering bin provided with biochemical cotton and a nitrobacteria stone filtering bin provided with nitrobacteria stone, which are arranged in sequence.

Preferably, the lower end of the second pipe body is provided with an external thread, the water inlet of the bottom filter bin is provided with an internal thread matched with the external thread, and the second pipe body is in threaded sealing connection with the bottom filter bin; the third pipe body is detachably clamped and connected with the bottom filtering bin.

Preferably, a sealing ring is arranged between the second pipe body and the water inlet of the bottom filter bin.

Preferably, the first water inlet hole is a latticed water inlet hole.

Preferably, the height of the second water inlet hole is higher than two thirds of the height of the transparent cylinder body.

Preferably, the upper cover bin is provided with a flower growing spectrum lamp.

Preferably, the bottom of the upper cover bin is provided with an illuminating lamp for illuminating the transparent cylinder body.

Preferably, the flower cultivation lamp and the water pump are connected through signals, the controller is connected with the flower cultivation spectrum lamp, the illuminating lamp and the water pump through signals, and the controller comprises a remote terminal used for remotely controlling the water pump, the illuminating lamp and the water pump.

Preferably, the transparent cylinder body is a transparent acrylic plate cylinder body.

The bottom filtering fish tank provided by the utility model is characterized in that water in the transparent cylinder body enters the third pipe body through the first water inlet hole in use, because the water level in the transparent cylinder body is higher, the water entering the third pipe body can flow upwards along a channel between the third pipe body and the second pipe body, the water level in the third pipe body reaches the second water inlet hole, the water flow enters the second pipe body from the second water inlet hole and enters the bottom filtering bin along a channel between the second pipe body and the first pipe body, the bottom filtering bin filters the water and cultures nitrobacteria, after the water is filtered by the bottom filtering bin, the water pump pumps the water in the bottom filtering bin to the upper cover bin, the water flow passes through the upper cover bin and nourishes the water for the water culture plants in the upper cover bin, meanwhile, the root system of the plants and the digestive bacterium stones in the upper cover bin can realize swamp filtering and culture more nitrobacteria again for the water flow, and finally the water flow falls into the transparent cylinder body through the water outlet of the upper cover bin, and space circulation of water flow is realized.

The utility model provides a fish bowl is filtered at end has following advantage:

the fish culture device has the advantages of being simple in structure, convenient to assemble and use, free of troubles of assembly of users, easy and convenient to use, and capable of cultivating the fun of fish culture of small and white users.

Secondly, the method comprises the following steps: the scheme that the filtering bin is arranged at the bottom of the fish tank is adopted, all the diversion water pipes are integrally designed in a nesting mode, the water pump is hidden in the bottom filtering bin, the sheltering viewing surface is reduced, and the 360-degree panoramic fish viewing effect is achieved.

And thirdly, a double filtering mode combining bottom filtering and upper covering marsh filtering is adopted, so that the filtered water quality is obviously improved, and the survival rate of fish culture is improved.

And fourthly, the water flow circulation route is that the transparent cylinder body, the bottom filtering bin, the upper cover bin and the transparent cylinder body realize the space circulation of the water flow, the function of oxygen making can be simultaneously combined in the circulating filtering process, and the function of ventilating the fish in the fish tank is realized by utilizing the flushing effect of the water pump.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is an exploded view of an embodiment of a bottom-filtering fish tank of the present invention;

fig. 2 is a schematic perspective view of a bottom filtering fish tank according to an embodiment of the present invention;

fig. 3 is a schematic view of the internal structure of a bottom filtering fish tank according to an embodiment of the present invention;

FIG. 4 is an assembled view of the first, second and third tubes;

FIG. 5 is a schematic top view of the bottom filtration cartridge;

fig. 6 is a perspective view of the bottom filtration cartridge.

The flower cultivation device comprises a flower cultivation spectrum lamp 1, a flower cultivation spectrum lamp 2, an upper cover bin 21, a water spray head 22, an outlet filter screen 3, a third pipe body 31, a first water inlet hole, a transparent cylinder body 4, a bottom filter bin 5, a water inlet and outlet bin 51, a white cotton filter bin 52, a biochemical cotton filter bin 53, a nitrobacteria stone filter bin 54, a biochemical bacteria culture bin 55, a second pipe body 6, a second water inlet hole 61, an external thread 62, a first pipe body 7, a water pump 8 and an arrow indicating the water flow direction.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a bottom filtering fish tank with convenient use, good filtering effect and excellent landscape effect.

Referring to fig. 1 to 6, fig. 1 is an exploded schematic view of a bottom filtering fish tank according to an embodiment of the present invention; fig. 2 is a schematic perspective view of a bottom filtering fish tank according to an embodiment of the present invention; fig. 3 is a schematic view of the internal structure of a bottom filtering fish tank according to an embodiment of the present invention;

FIG. 4 is an assembled view of the first, second and third tubes; FIG. 5 is a schematic top view of the bottom filtration cartridge; fig. 6 is a perspective view of the bottom filtration cartridge.

The bottom filtering fish tank provided by the utility model comprises a transparent tank body 4, a bottom filtering bin 5 which is arranged at the bottom of the transparent tank body 4 and is used for filtering water flow and culturing bacteria, and an upper cover bin 2 which is arranged at the upper part of the transparent tank body 4 and is used for culturing aquatic plants and sand stones, wherein a first pipe body 7, a second pipe body 6 which is sleeved outside the first pipe body 7, and a third pipe body 3 which is sleeved outside the second pipe body 6 are arranged in the transparent tank body 4;

the lower end of the first pipe body 7 is connected with the water outlet of the bottom filtering bin 5, and the upper end of the first pipe body 7 is connected with the water inlet of the upper cover bin 2;

the lower end of the second pipe body 6 is connected with the water inlet of the bottom filtering bin 5, and the side wall of the upper end of the second pipe body 6 is provided with a second water inlet hole 61 for water to enter the second pipe body 6;

the side wall of the lower end of the third tube 3 is provided with a first water inlet hole 31 for water in the transparent cylinder 4 to flow into the third tube 3;

the bottom filter bin 5 is internally provided with a water pump 8, the water outlet of the water pump 8 is connected with a first pipe body 7 so as to pump the filtered water flow into the upper cover bin 2, and the upper cover bin 2 is provided with a water inlet communicated with the transparent cylinder body 4 so as to make the water pumped into the upper cover bin 2 flow into the transparent cylinder body 4.

Wherein, transparent cylinder body 4 can be transparent cylinder body 4 such as transparent glass transparent cylinder body 4 or transparent acrylic plate 4, and transparent cylinder body 4's shape can be for square, cuboid, cylinder or ellipsoid etc. and specifically can be nimble as required, should guarantee that the lateral part of transparent cylinder body 4 reaches the effect of 360 panorama sight fishes.

The upper portion of transparent cylinder body 4 is equipped with upper cover storehouse 2, and upper cover storehouse 2 is used for breeding pasture and water or other water planting plants etc. to increase holistic richness and aesthetic property, and the bottom of transparent cylinder body 4 is equipped with end filter storehouse 5, and end filter storehouse 5 is used for filtering rivers and makes the cultivation nitrobacteria, in order to improve quality of water, still can place nitrobacteria stone in upper cover storehouse 2 in addition, in order to further improve quality of water.

Be equipped with the three-layer body in the transparent cylinder body 4, be the first body 7, second body 6 and the third body 3 of suit layer upon layer respectively, wherein, the upper end of first body 7 is connected with the water inlet of upper cover storehouse 2, and the lower extreme of first body 7 is connected with the delivery port of end filter storehouse 5, and is equipped with water pump 8 in the end filter storehouse 5, and water pump 8's delivery port is connected in the delivery port of end filter storehouse 5 to go into upper cover storehouse 2 with the water pump 8 that filters the completion in the end filter storehouse 5.

Specifically, the both sides of upper cover storehouse 2 can be located respectively to the water inlet of upper cover storehouse 2 and the delivery port of upper cover storehouse 2 to make rivers flow through too much water planting plant as far as, the water inlet department of upper cover storehouse 2 sets up the sprinkler bead 21 of loudspeaker form, and sprinkler bead 21 can play the effect of water conservancy diversion, and simultaneously, sprinkler bead 21 can make the water that gets into upper cover storehouse 2 disperse as far as, avoids rivers to dash the outside of upper cover storehouse 2 too fast. In addition, an outlet filter screen 22 can be arranged at the water outlet of the upper cover bin 2 to prevent large-particle sand and stones in the upper cover bin 2 from entering the transparent cylinder body 4.

The second body 6 cover is established outside first body 7, and forms the second between the inner wall of second body 6 and the outer wall of first body 7 and goes into the water passageway, and the upper end lateral wall department of second body 6 is equipped with the second that goes into the water passageway intercommunication with the second and goes into the water hole, and the lower extreme of second body 6 is connected in the water inlet of end filtration storehouse 5 to make from the rivers that the second water outlet got into in second body 6, the second that forms between the outer wall of inner wall of second body 6 and first body 7 of edge goes into the water passageway and flows into end filtration storehouse 5.

The 3 covers of third body are established in the outside of second body 6, form first passageway of entrying between the inner wall of third body 3 and the outer wall of second body 6, and the lower extreme lateral wall department of third body 3 is equipped with the first inlet hole of communicating with transparent cylinder body 4, first passageway of entrying communicates respectively with first inlet hole and second inlet hole, water gets into first passageway of entrying from first inlet hole 31 in transparent cylinder body 4, because the water level in the fish bowl is higher, therefore, the rivers in the first passageway of entrying can rise along third body 3, be higher than the second inlet hole when the water level in the first passageway of entrying, rivers just can get into the second passageway of entrying from the second inlet hole, thereby it filters to get into end filter bin 5 entering.

Get into the water in the end filter storehouse 5, filter the back through end filter storehouse 5, go into upper cover storehouse 2 by 8 pump pumping, rivers flow through upper cover storehouse 2, and can carry out the rich water to the water planting plant in the upper cover storehouse 2 and nourish, the root system of plant and the digestion bacterium stone in the upper cover storehouse 2 simultaneously can realize again that the marsh filters and cultivates more nitrobacteria to rivers, rivers fall into transparent cylinder body 4 by the delivery port of upper cover storehouse 2 in at last, realize the space circulation of rivers.

In the bottom filtering fish tank provided by the utility model, in use, water in the transparent cylinder body 4 enters the third pipe body 3 through the first water inlet hole 31, because the water level in the transparent cylinder body 4 is higher, the water entering the third pipe body 3 flows upwards along the channel between the third pipe body 3 and the second pipe body 6, the water level in the third pipe body 3 reaches the second water inlet hole 61, the water flows into the second pipe body 6 from the second water inlet hole 61 and enters the bottom filtering bin 5 along the channel between the second pipe body 6 and the first pipe body 7, the bottom filtering bin 5 filters the water and cultures nitrobacteria, after the water is filtered by the bottom filtering bin 5, the water pump 8 filters the water pump 8 in the bottom filtering bin 5 to the upper cover bin 2, the water flows through the upper cover bin 2 and nourishes the water culture water for water plants, meanwhile, the root system of the plants and the digestive bacteria in the upper cover bin 2 can realize marsh filtration and culture for more nitrobacteria again, finally, the water flow falls into the transparent cylinder body 4 from the water outlet of the upper cover bin 2, so that the space circulation of the water flow is realized.

The utility model provides a fish bowl is filtered at end has following advantage:

the fish culture device has the advantages of being simple in structure, convenient to assemble and use, free of troubles of assembly of users, easy and convenient to use, and capable of cultivating the fun of fish culture of small and white users.

Secondly, the method comprises the following steps: the scheme that the filtering bin is arranged at the bottom of the fish tank is adopted, all the diversion water pipes are integrally designed in a nesting mode, the water pump 8 is hidden in the bottom filtering bin 5, the sheltering viewing surface is reduced, and the 360-degree panoramic fish viewing effect is achieved.

And thirdly, a double filtering mode combining bottom filtering bin 5 and upper cover bin 2 for marsh filtering is adopted, so that the filtered water quality is obviously improved, and the survival rate of fish culture is improved.

And fourthly, the water flow circulation route is that the transparent cylinder body 4, the bottom filter bin 5, the upper cover bin 2 and the transparent cylinder body 4 realize the space circulation of the water flow, the function of oxygen making can be simultaneously combined in the circulation filtering process, and the function of ventilating the fish in the fish tank is realized by utilizing the flushing effect of the water pump 8.

On the basis of the above-described embodiment, in consideration of the specific structural arrangement of the bottom filtering silo 5, as a preferable option, the bottom filtering silo 5 includes an inlet and outlet water silo 51, a white cotton filtering silo 52 provided with honeycomb filter cloth white cotton, a biochemical cotton filtering silo 53 provided with biochemical cotton, and a nitrobacteria stone filtering silo 54 provided with nitrobacteria stone, which are sequentially arranged.

Wherein, white cotton of honeycomb filter cloth is set up in the white cotton filtration storehouse 52, and the white cotton of honeycomb filter cloth's effect is that the product is difficult for smelly for honeycomb structure, and impurity in the clean filtration aquatic is durable rub and wash resistant, does not fall hair, and the water permeability is strong, and overlength life effectively reduces toxic substance concentration, reduces the probability that the fish is sick.

The biochemical cotton is arranged in the biochemical cotton filtering bin 53 and has the function of culturing nitrobacteria, so that the nitrobacteria decompose toxic NH3/NH4 and NO2 in water and convert the toxic NH3 into nontoxic NO 3. Therefore, the filter material can improve the water quality and the survival rate of fishes, and has both physical and biochemical filtering effects.

Nitrifying bacteria stone is arranged in the nitrifying bacteria stone filtering bin 54, the nitrifying bacteria stone has the function that nitrifying bacteria comprise nitrite bacteria and nitrate bacteria, and the nitrifying bacteria stone is aerobic bacteria and is used for controlling the concentration of ammonia produced in the culture water and improving the survival rate of fishes in the process of purifying the nitrogen circulating water. In addition, other biochemical bacteria culturing bins 55 for culturing biochemical bacteria can be arranged to further improve the water quality.

On the basis of the above embodiment, in consideration of the specific connection mode between the second pipe 6 and the bottom filtering bin 5, as a preferable mode, the lower end of the second pipe 6 is provided with an external thread 62, the water inlet of the bottom filtering bin 5 is provided with an internal thread matched with the external thread 62, and the second pipe 6 and the bottom filtering bin 5 are connected in a thread sealing manner; the third pipe body 3 is detachably clamped on the bottom filter bin 5.

Wherein, the lower extreme of second body 6 and the water inlet threaded connection who crosses filter storehouse 5 at the bottom, the upper end of second body 6 can be connected with upper cover storehouse 2, also can be connected with the outer wall of first body 7 to avoid the water in the transparent cylinder body 4 to get into second body 6 from the upper end of second body 6, the lower extreme and the end of third body 3 cross filter storehouse 5 joint, in order to play the effect of sealed third body 3, the upper end of third body 3 also can be connected with upper cover storehouse 2.

Rivers get into third body 3 from the lower extreme of third body 3, get into second body 6 from the upper end of second body 6 again to make transparent cylinder body 4's water get into third body 3 from transparent cylinder body 4's bottom, can guarantee that the rivers in the transparent cylinder body 4 obtain abundant loop filter, avoid the water of the bottom in the transparent cylinder body 4 to obtain in time filtering, improve the quality of water in the transparent cylinder body 4.

In addition, when the water in the transparent cylinder body 4 of needs discharge, can demolish the second body 6, the helicitic texture is when opening, has realized that the water directly falls into end filter bin 5 in the transparent cylinder body 4, utilizes water pump 8 to draw water and arranges the water in the transparent cylinder body 4 completely, realizes a key drainage function.

On the basis of the above-mentioned embodiment, it is preferable that a sealing ring is provided between the second pipe 6 and the water inlet of the bottom filtering bin 5. In order to further improve the leakproofness between the water inlet of second body 6 and end filter storehouse 5, avoid rivers in the transparent cylinder body 4 to get into end filter storehouse 5 from the lower extreme of second body 6 to guarantee that the water level in the fish bowl is all the time at the height of second inlet opening 61.

On the basis of the above embodiment, considering the specific arrangement of the first water inlet holes 31, it is preferable that the first water inlet holes 31 are mesh-shaped water inlet holes, and in this embodiment, the second water inlet holes 61 are mesh-shaped to prevent large particles or small fish from entering the third pipe 3.

On the basis of the above embodiment, it is preferable that the height of the second water inlet hole 61 is higher than two thirds of the height of the transparent cylinder 4. Under normal conditions, the height of second inlet opening 61 on second body 6 is the general height of water level in transparent cylinder body 4 promptly, and is low for avoiding the water level in transparent cylinder body 4 excessively, and in this embodiment, the height of second inlet opening 61 is higher than the two-thirds of transparent cylinder body 4 height, and of course, still can set up as required to other heights.

On the basis of the above-mentioned embodiment, the upper cover bin 2 is preferably provided with a flower growing spectrum lamp 1. The flower-growing spectrum lamp 1 can meet the illumination condition required by plant photosynthesis. So that the plant can grow normally or better in the environment lacking sunlight indoors by using the flower growing spectrum lamp 1 as sunlight. The flower growing spectrum lamp 1 has the functions of strengthening roots, promoting growth, adjusting flowering phase and flower color, promoting fruit ripening and coloring, and improving taste and quality. On the basis of the above embodiment, in order to facilitate viewing of fish in the transparent cylinder 4 at night, it is preferable that the bottom of the upper lid chamber 2 is provided with an illumination lamp for illuminating the transparent cylinder 4.

On the basis of any of the above embodiments, as a preferable mode, the flower cultivation device further comprises a controller in signal connection with the flower cultivation spectrum lamp 1, the illuminating lamp and the water pump 8, and the controller comprises a remote terminal for remotely controlling the illuminating lamp and the water pump 8 of the water pump 8. Specific remote terminal can be cell-phone APP, adopts APP control, and remote control grows flower spectrum lamp 1, light and water pump 8's switch, and the light and shade of control spectrum lamp 1 is adjusted, and 8 rivers sizes of control water pump are adjusted, of course, still can set up relevant detection device, to water quality monitoring, or regularly quantitative intelligence throw the food etc..

In addition to the above embodiments, in consideration of the specific material of the transparent cylinder 4, it is preferable that the transparent cylinder 4 is a transparent acrylic plate cylinder. Correspondingly, go up lid storehouse 2 and end and filter storehouse 5 and also can adopt ya keli material of moulding plastics, more be fit for miniaturized fish bowl, reduce the cost of fish bowl, lightweight product self, the easy to assemble equipment has removed the puzzlement of user's equipment from, light facilitate the use.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The bottom filtering fish tank provided by the utility model is described in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. A bottom filtering fish tank is characterized by comprising a transparent tank body (4), a bottom filtering bin (5) which is arranged at the bottom of the transparent tank body (4) and used for filtering water flow and culturing bacteria, and an upper cover bin (2) which is arranged at the upper part of the transparent tank body (4) and used for culturing aquatic weeds and sand stones, wherein a first pipe body (7), a second pipe body (6) sleeved outside the first pipe body (7) and a third pipe body (3) sleeved outside the second pipe body (6) are arranged in the transparent tank body (4);

the lower end of the first pipe body (7) is connected with the water outlet of the bottom filtering bin (5), and the upper end of the first pipe body (7) is connected with the water inlet of the upper cover bin (2);

the lower end of the second pipe body (6) is connected with a water inlet of the bottom filtering bin (5), and a second water inlet hole (61) for water to enter the second pipe body (6) is formed in the side wall of the upper end of the second pipe body (6);

a first water inlet hole (31) for allowing water in the transparent cylinder body (4) to flow into the third pipe body (3) is formed in the side wall of the lower end of the third pipe body (3);

the bottom filter is characterized in that a water pump (8) is arranged in the bottom filter bin (5), a water outlet of the water pump (8) is connected to the first pipe body (7) so as to pump filtered water flow into the upper cover bin (2), and the upper cover bin (2) is provided with a water inlet communicated with the transparent cylinder body (4) so as to enable the water flow pumped into the upper cover bin (2) to flow into the transparent cylinder body (4).

2. The bottom-filtering fish tank as claimed in claim 1, characterized in that the bottom-filtering bin (5) comprises a water inlet and outlet bin (51), a white cotton filtering bin (52) provided with honeycomb filter cloth white cotton, a biochemical cotton filtering bin (53) provided with biochemical cotton and a nitrobacteria stone filtering bin (54) provided with nitrobacteria stone which are arranged in sequence.

3. The bottom-filtering fish tank as claimed in claim 1, characterized in that the lower end of the second pipe body (6) is provided with an external thread (62), the water inlet of the bottom-filtering bin (5) is provided with an internal thread matched with the external thread (62), and the second pipe body (6) is hermetically connected with the bottom-filtering bin (5) by a thread; the third pipe body (3) is detachably clamped in the bottom filtering bin (5).

4. A bottom-filtering fish tank as claimed in claim 3, characterized in that a sealing ring is arranged between the second pipe body (6) and the water inlet of the bottom-filtering bin (5).

5. A bottom filtering aquarium according to claim 1, where in the first inlet openings (31) are grid-like inlet openings.

6. A bottom filtering aquarium according to claim 5, where in the height of the second inlet opening (61) is higher than two thirds of the height of the transparent tank body (4).

7. A bottom-filtering fish tank as claimed in claim 1, characterized in that the upper cover chamber (2) is provided with a flower-growing spectrum lamp (1).

8. A bottom-filtering fish tank as claimed in claim 7, characterized in that the bottom of the upper cover bin (2) is provided with a lighting lamp for illuminating the transparent tank body (4).

9. A bottom filtering aquarium according to claim 8, characterized in that it also comprises a controller in signal connection with the flower growing spectrum lamp (1), the illuminating lamp and the water pump (8), the controller comprising a remote terminal for remote control of the flower growing spectrum lamp (1), the illuminating lamp and the water pump (8).

10. A bottom filtering aquarium according to claim 9, where in the transparent tank (4) is a transparent acrylic plate tank.

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