CN214758671U

CN214758671U - Filter system of washing-free cotton bottom filter fish tank

Info

Publication number: CN214758671U
Application number: CN202121078673.0U
Authority: CN
Inventors: 郑桂森
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-11-19
Anticipated expiration: 2031-05-19

Abstract

The utility model relates to a fish bowl filters technical field, discloses a exempt from to wash at bottom of cotton and strain fish bowl filtration system, strain jar, water pump, upper hose, downcomer at the bottom including main cylinder, support end cabinet, end strain the jar and separate for: rain storehouse, filter media storehouse, water pump storehouse, four kinds of function cavitys in the storehouse of deposiing, the position structure mode in each function storehouse is vertical layering arrangement in the end filter tank, does in proper order: the deluge bin sets up in the superiors of end filter vat, and filter media storehouse and water pump storehouse set up in the intermediate level of end filter vat side by side, deposit the storehouse and set up the bottommost of end filter vat, it is provided with washing unit, blowdown subassembly to deposit the storehouse. The invention can effectively improve the filtering efficiency of the filtering system through the innovative design of the bottom filtering cylinder structure; wherein, through washing subassembly, blowdown subassembly etc. become the loaded down with trivial details maintenance work of fish bowl simple on-off operation, make the breed of aquarium fish become more light convenient.

Description

Filter system of washing-free cotton bottom filter fish tank

Technical Field

The utility model relates to a fish bowl filters technical field, in particular to exempt from to wash at bottom of cotton and strain fish bowl filtration system.

Background

With the continuous improvement of living standard of people, more and more people put fish tanks in the middle of a house as household furnishings, and the feeding of ornamental fish gradually becomes an interest and hobby for adjusting living pressure and ceramic sexual conditions; the existing filtering mode of the bottom filtering fish tank is as follows: the method is mainly characterized in that physical intercepting media such as filter cotton and the like are placed in a filtering system, organic matters such as fish feces, fish food residues and the like are intercepted from a circulating water path, and a water body after physical filtering further flows into a biochemical filtering area for biological purification and filtration, so that the water quality of the fish tank is kept clean to achieve the purpose of being suitable for feeding ornamental fish. However, in the daily feeding process, the fish feces and fish food residues intercepted and retained on the filter cotton are continuously washed by water flow due to untimely cleaning and maintenance of the filter cotton by people, and then dissolved into the water body after being pulverized, so that pollution of organic matters to the feeding water body is accelerated, the filtering efficiency of a filtering system is low, discomfort and even death of the aquarium fish are caused, and the fish tank overflow accident can be caused due to blockage of the organic matters on the filter cotton, so that the filter cotton needs to be cleaned frequently to become the necessary daily maintenance work for feeding the aquarium fish.

Disclosure of Invention

In order to solve the problem, the utility model provides a exempt from to wash at bottom of cotton and strain fish bowl filtration system can effectively improve the filtration efficiency of straining the fish bowl at the bottom, no longer need wash the filter pulp simultaneously, makes fish bowl filtration system's routine maintenance become more convenient, and the raising of aquarium fish becomes lighter.

In order to achieve the above purpose, the technical scheme of the utility model is that: a washing-free cotton bottom filtering fish tank filtering system comprises a main cylinder, a supporting bottom cabinet, a bottom filtering cylinder, a water pump, an upper water pipe and a lower water pipe; the main cylinder is placed above the supporting bottom cabinet, the main cylinder is provided with an overflow area, the bottom filter cylinder is placed in the supporting bottom cabinet and is arranged below the main cylinder, the water pump is placed in the bottom filter cylinder and is connected with a water feeding pipe, the water outlet end of the water feeding pipe leads to the inside of the main cylinder, one end of the water drainage pipe is connected with the overflow area of the main cylinder, and the other end of the water drainage pipe leads to the inside of the bottom filter cylinder; the bottom filter cylinder is divided into four functional cavities of a rain cabin, a filter material cabin, a water pump cabin and a precipitation cabin, the position structure mode of each functional cabin in the bottom filter cylinder is vertical layered arrangement, and the bottom filter cylinder sequentially comprises the following components: the deluge bin sets up in the superiors of end filter vat, and filter media storehouse and water pump storehouse set up in the intermediate level of end filter vat side by side, deposit the storehouse and set up the bottommost of end filter vat, it is provided with washing unit, blowdown subassembly to deposit the storehouse.

In some embodiments of the application, both ends are for taking slope inclined plane design about the storehouse bottom of sediment.

In some embodiments of this application, the overall structure who deposits the storehouse is "concave" font structure, deposits the storehouse and wraps up filter media storehouse, water pump storehouse, rain storehouse half from last in the centre, the highest one side in storehouse bottom of depositing is for intaking the district, and the lowest one side in bottom is the overflow district, the top height in district of intaking is less than overflow district top height, it still is equipped with the blast pipe to deposit the storehouse, the blast pipe sets up at intake district top, the blast pipe height is higher than overflow district top height, the water pump storehouse still is equipped with anti-overflow pipe.

In some embodiments of the present application, a bottom filtering jar flushing intake is provided in the main cylinder, the bottom filtering jar flushing intake is provided on an overflow plate of the main cylinder overflow area.

In some embodiments of the application, still be equipped with the secondary filter storehouse on the filter media storehouse, the secondary filter storehouse passes through secondary filter pipe and water supply pipe connection.

In some embodiments of the present application, a water adding assembly is further disposed in the settling bin.

In some embodiments of this application, the flushing component sets up in the district of intaking, the flushing component is including connecting pipe fitting, control valve, washing terminals, the flushing component area washing terminals one end is fixed in the district of intaking, and the other end passes the end filter bowl on main cylinder overflow district bottom and the main cylinder overflow board and washes the intake connection, the blowdown component sets up in the bottom that deposits the storehouse, the blowdown component is including connecting pipe fitting, control valve, the blowdown component is connected with the minimum one end in sediment storehouse bottom, the subassembly that adds water sets up in the overflow district, the subassembly that adds water includes connecting pipe fitting, water level controller, control valve, water level controller operating water level line sets up the height that is less than sediment storehouse overflow board, the play water end of the subassembly that adds water leads to in the main cylinder, and the water source is connected to the end of intaking.

In some embodiments of the present application, the control valves in the blowdown assembly, the flushing assembly, and the water adding assembly are electrically operated valves, and the control valves are electrically connected to the time control device, respectively.

In some embodiments of the application, the intermediate layer of the bottom filter cylinder structure is also provided with a multifunctional bin, and the multifunctional bin is arranged with the filter material bin and the water pump bin in parallel.

Compared with the prior art, the utility model discloses beneficial effect lies in:

1. compared with the existing traditional transverse left-right arrangement type structure, the innovative rigid layered arrangement type bottom filter cylinder structure in the utility model can improve the internal space of the supporting bottom cabinet and the volume utilization rate of the bottom filter cylinder, and can effectively improve the filtering efficiency of the filtering system; when water needs to be changed, the water body which needs to be drained by the main cylinder can be used for washing the settling bin, so that the purposes of recycling and saving water sources can be achieved; meanwhile, the quantitative water drainage of the fish tank can be realized, and the risk of injury and death loss of the aquarium fish caused by the fact that the water body of the main cylinder is completely drained when manual operation errors or electric control equipment fails can be avoided.

2. The filtering system in the utility model creatively avoids the use of traditional physical interception media such as filter cotton, and changes the complex maintenance work of daily pollution discharge, cleaning, water change and the like into convenient on-off operation; the automatic operation can be realized by controlling the time control equipment, so that the bottom filtering fish tank can realize jumping to full-automatic intellectualization, and the feeding of the ornamental fish becomes easier and simpler.

Drawings

FIG. 1 is a front view of the overall structure of the present invention

FIG. 2 is a schematic view of the overall structure of the present invention

FIG. 3 is a perspective view of the main structure of the present invention

FIG. 4 is a perspective view of the main structure of the multifunctional belt cabin of the present invention

FIG. 5 is a schematic view of the internal structure of the main structure of the present invention

FIG. 6 is a schematic view of the internal structure of the main structure of the multifunctional belt cabin of the present invention

FIG. 7 is a schematic view of the internal structure of the master cylinder of the present invention

FIG. 8 is a schematic view of the internal structure of the master cylinder of the present invention

The reference numbers illustrate: 1. a master cylinder; 11. a master cylinder overflow area; 12. a master cylinder overflow plate; 121. a main cylinder flow baffle plate; 2. a supporting base cabinet; 3. a bottom filtering cylinder; 4. a water pump; 5. a water feeding pipe; 51. the water outlet end of the water feeding pipe; 6. a sewer pipe; 7. a rain cabin; 8. a filter material bin; 9. a water pump bin; 10. a settling bin; 101. the bottom of the settling bin; 102. a water inlet area; 103. an overflow zone; 104. a flushing assembly; 1041. washing the spray head; 105. a blowdown assembly; 106. a steam exhaust pipe; 13. the bottom filtering cylinder washes the water intake; 14. a secondary filtering bin; 141. a secondary filter pipe; 15. a water adding component; 151. a water outlet end of the water adding component; 152. a water level controller; 16. a settling bin overflow plate; 17. a control valve; 171. a control valve; 172. a control valve; 18. a multifunctional bin; 19. an anti-overflow pipe.

Detailed Description

The present invention will be described in further detail with reference to the following preferred embodiments, which are only used for illustrating the present invention and should not be construed as limiting the present invention.

Referring to fig. 1-8, a preferred embodiment of the present invention provides a washing-free cotton bottom filtering fish tank filtering system, which comprises a main tank 1, a supporting bottom cabinet 2, a bottom filtering tank 3, a water pump 4, a water supply pipe 5, and a sewer pipe 6. The main cylinder 1 is placed on the supporting bottom cabinet 2, the main cylinder 1 is used for placing ornamental fishes, a main cylinder overflow area 11 is arranged in the main cylinder 1, the structure of the main cylinder overflow area 11 can be formed by two enclosing plates which are mutually parallel and overlapped, and can also be formed by two round pipes with different diameters which are overlapped, the preferable embodiment is further described in detail by a scheme that the two enclosing plates are mutually parallel and overlapped, the main cylinder overflow area 11 is formed by a main cylinder overflow plate 12 and a main cylinder baffle plate 121, the main cylinder overflow plate 12 is hermetically bonded with the bottom of the main cylinder 1 and the cylinder wall to play a role of fixing the water level of the main cylinder 1, the main cylinder baffle plate 121 is overlapped and fixed at the outer side of the main cylinder overflow plate 12, a gap is reserved between the two, an opening is reserved at the bottom, when the water level of the main cylinder 1 is higher than the main cylinder overflow plate 12, the water in the cylinder is forced to enter the gap between the two from the bottom and then flow into the main cylinder overflow area 11 by utilizing the water pressure difference principle, simultaneously, the function of sucking away organic matters such as fish feces and the like in the tank is achieved. The bottom filtering cylinder 3 is placed in the supporting bottom cabinet 2 and is arranged below the main cylinder 1, the bottom filtering cylinder 3 is used for placing filtering materials and placing filtering control equipment, the water pump 4 is placed in the water pump bin 9 and is connected with the water feeding pipe 5, the water outlet end 51 of the water feeding pipe is led into the main cylinder 1 through the bottom of the main cylinder overflow area 11, and the bottom of the main cylinder overflow area 11 is connected with the water inlet area 102 of the settling bin 10 in the bottom filtering cylinder 3 through the sewer pipe 6. The water body is continuously circulated and purified in the main cylinder 1, the bottom filter cylinder 3 and the connecting pipe fitting by the driving of the water pump 4, and a filter system of the fish tank is formed.

The bottom filtering cylinder 3 is divided into the following parts: functional bin bodies such as a deluge bin 7, a filter material bin 8, a water pump bin 9, a precipitation bin 10 and the like; the position structure mode of each function storehouse body in the end filter vat 3 adopts vertical layering to arrange, from last down does in proper order: the deluge bin 7 is arranged on the uppermost layer of the bottom filter cylinder 3, the filter material bin 8 and the water pump bin 9 are arranged in parallel on the middle layer of the bottom filter cylinder 3, and the sedimentation bin 10 is arranged on the bottommost layer of the bottom filter cylinder 3. A rain-type water distribution plate is arranged in the rain cabin 7, a filtering material is placed under the water distribution plate, the main function of the rain-type water distribution plate is to filter a water body in a uniform rain-type mode and improve the oxygen dissolution of a filtering system, the filtering material cabin 8 is used for placing a biochemical filtering material and mainly performs biological purification on the water body in a progressive overflow mode, and the precipitation cabin 10 is mainly used for isolating and collecting organic matters such as fish feces, fish food residues and the like in a circulating water body; the operation principle of the bottom filter cylinder 3 is as follows: the main cylinder water firstly enters the precipitation bin 10 through the sewer pipe 6 to precipitate and collect organic matters such as fish and excrement, then overflows into the deluge bin 7, is forcibly deluge-filtered through the deluge-distribution plate, then flows into the filter material bin to be further biologically purified, finally overflows to the water pump bin 9, and is pumped back into the main cylinder 1 through the water feeding pipe 5 by the water pump 4 to complete a single filtering period, so that the water is continuously filtered and purified in a circulating manner. The sedimentation bin 10 is also internally provided with a flushing component 104 and a pollution discharge component 105, and the main function of the sedimentation bin is to timely discharge and flush pollution source organic matters such as fish and excrement collected and isolated by the sedimentation bin 10.

Based on the above setting, the utility model discloses insole filter cylinder 3 insist on to the layered structure design, the vertical space advantage of straining the fish bowl at the bottom of the make full use of ability improves the inside space rate of utilization that supports end cabinet 2, promotes the volume space of end filter cylinder 3, and the position overall arrangement in each function storehouse is more reasonable, enables the horizontal area that deposits storehouse 10 and can reach the maximize. According to a known fluid calculation formula { Q (flow) ═ S (fluid cross-sectional area) × V (flow velocity) } and the characteristic that substances with specific gravity greater than that of water sink in the water body, it can be obtained that the water body flow velocity is slower when the cross-sectional area of the water flow area is larger under the condition that the water body flow rate is kept unchanged; when the water flow rate is slower and the flow is longer, the precipitation effect of the substances with the specific gravity larger than that of water in the area is better, so that the precipitation bin 10 with the maximized area can replace filter cotton to intercept and collect most of fish feces and fish food residues with the specific gravity larger than that of water, can completely store and isolate the fish feces as far as possible, and reduces the possibility that the fish feces are pulverized due to the washing of water flow and then enter a biochemical filtering area. Synthesize above can reach effective filtration efficiency who improves filtration system, removed the use of physics interception medium such as filter pulp simultaneously from, and then left out loaded down with trivial details filter pulp cleaning work, still set up blowdown subassembly 105 and washing component 104 in the storehouse 10 that deposits in addition, can in time and conveniently carry out blowdown and washing to the fish excrement and urine and the fish food residue that deposit storehouse 10 and collect, make fish bowl filtration system's routine maintenance lighter.

In some embodiments, optionally, the left end and the right end of the bottom 101 of the settling bin are designed to be inclined planes with slopes, a drain outlet is opened at the lowest position of the bottom 101 of the settling bin and is connected with a drain assembly 105, and the drain assembly 105 is formed by: a connecting pipe fitting and a control valve 17, wherein the drainage end is led to a domestic drainage outlet; the inclined plane design of depositing storehouse bottom 101 area slope compares traditional planar design, can be more efficient thoroughly when the blowdown is washd.

In some embodiments, optionally, the overall structure of the settling bin 10 adopts a concave design, and the filtering material bin 8, the water pump bin 9 and the deluge bin 7 are half-wrapped in the settling bin 10 from bottom to top. The highest side of the bottom 101 of the settling bin is a water inlet area 102, and the lowest side of the bottom 101 of the settling bin is an overflow area 103; the top height of the water inlet area 102 is required to be lower than that of the water overflow area 103, so that the vertical space of the settling bin 10 can be maximized, the settling and collecting capacity of the settling bin 10 is further improved, meanwhile, the centralized arrangement and installation of main connecting pipe fittings and control equipment of a filtering system are facilitated, the occupied space in the supporting bottom cabinet 2 is reduced, the volume space of the bottom filtering cylinder 3 can be maximized, and the filtering capacity of the filtering system is improved; in order to solve the problem that air is brought into the settling bin 10 from the main cylinder overflow area 11 through the sewer pipe 6 by water flow to affect the normal operation of the circulating water path, the top of the water inlet area 102 is also provided with an exhaust pipe 106, and in order to prevent the risk of overflow, the height of the exhaust pipe 106 is higher than that of the top of the overflow area 103. The water pump bin 9 is provided with an overflow preventing pipe 19, the overflow preventing pipe 19 is arranged on the cavity wall of the water pump bin 9, and the water outlet end of the overflow preventing pipe is led to a domestic sewer port to mainly prevent the water in the bottom filter cylinder 3 from overflowing.

In some embodiments, optionally, the main cylinder overflow plate 12 is provided with a bottom filtering cylinder flushing intake 13, which is mainly used for connecting a flushing assembly 104, wherein the flushing assembly 104 is formed by: the water inlet area 102 is fixed at one end of the washing nozzle 1041, and the other end of the washing nozzle 1041 penetrates through the bottom of the overflow area 11 of the main cylinder and is connected with the washing water intake 13 of the bottom filter cylinder. Through the arrangement, the water body which needs to be drained by the main cylinder is used for draining and flushing the sedimentation bin 10 while the fish tank is changed, so that the purposes of recycling, saving water sources and reducing maintenance cost are achieved; in addition, the quantitative water drainage of the main cylinder 1 can be controlled by setting the height of the washing water intake 13 of the bottom filter cylinder, so that the risk of emptying the water body of the main cylinder 1 due to human error or equipment failure when the water in the fish tank is changed can be avoided.

In some embodiments, optionally, a secondary filtering bin 14 is further disposed above the filter material bin 8, and the secondary filtering pipe 141 is connected to the water supply pipe 5 and the water pump 4, so that the water pump 4 returns part of the filtered water to the secondary filtering bin 14 again for secondary filtering. The advantage lies in make full use of space, increases filtration system's filter media and deposits the volume, reaches the filtration efficiency who improves filtration system.

In some embodiments, optionally, a water adding assembly 15 is further disposed in the settling bin 10, the water adding assembly 15 is fixed on the inner wall of the overflow area 103, and the water adding assembly 15 is formed by: the water adding device comprises a connecting pipe fitting, a water level controller 152 and a control valve 172, wherein the water outlet end 151 of the water adding assembly is led into the main cylinder 1, the water inlet end is connected with a tap water source, and the working water level of the water level controller 152 is required to be lower than the height of the sedimentation bin overflow plate 16. The assembly is mainly used for adding a clean water source again after the sedimentation bin discharges sewage and is cleaned.

In some embodiments, optionally, the control valve 17, the control valve 171 and the control valve 172 are electrically controlled valves and are electrically connected with a time control device, and the control valves are set by the time control device in advance, so that the daily pollution discharge, flushing, water change and other work of the fish tank can be fully automatically operated.

In some embodiments, optionally, the middle layer of the bottom filtering cylinder 3 structure is further provided with a multifunctional bin 18, and the multifunctional bin 18, the filtering material bin 8 and the water pump bin 9 are arranged above the settling bin 10 in parallel. The multifunctional bin 18 is mainly used for trapping water when breeding ornamental fishes sensitive to water quality change, and can also be used for other functions such as ornamental fish isolation, disease treatment or temporary feeding of feed fishes.

To sum up, the non-washing cotton bottom filtering fish tank filtering system provided by the embodiment of the utility model utilizes the efficient precipitation collecting capacity of the precipitation bin 10 through the innovative structural design of the bottom filtering tank 3, thereby effectively improving the filtering efficiency of the filtering system, creatively eliminating the use of physical interception media such as filter cotton and the like, and omitting the traditional cleaning and maintenance work of the filter cotton; through the arrangement of the innovative bottom filter cylinder for washing the water intake 13 and the use of the washing component 104, the pollution discharge component 105 and the water adding component 15, the daily complex maintenance work of pollution discharge, washing, water changing and the like is changed into simple on-off operation; the quantitative water drainage of the fish tank can be realized, the water body to be drained can be utilized to flush the settling bin when the water needs to be changed, the purposes of recycling and saving water sources can be achieved, and the risk of injury and death loss of the aquarium fish caused by the fact that the water body of the main cylinder is completely drained due to human misoperation or electric appliance control equipment failure is avoided; can also make an appointment the setting to control flap through time control equipment, make the daily blowdown of fish bowl, wash and trade water work and realize full automatization operation, make end strain the fish bowl and realize striding over to full-automatic intellectuality, it is more light convenient to raise ornamental fish, both can transfer the agent life, can not increase too much extra work burden again.

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

The foregoing is only a preferred embodiment of the present invention, and it should be noted that a person skilled in the art can make several modifications and equivalents without departing from the spirit and scope of the present invention, and such modifications and equivalents should be included in the protection scope of the present invention.

Claims

1. The utility model provides a exempt from to wash cotton end and strain fish bowl filtration system, includes main cylinder, supports end cabinet, end filter vat, water pump, upper hose, downcomer, the main cylinder is placed on supporting the end cabinet, and the main cylinder is equipped with the overflow district, end filter vat is placed in supporting the end cabinet, arranges the below of main cylinder in, the water pump is arranged in end filter vat in, with water supply piping connection, upper hose play water end leads to in the main cylinder, the main cylinder overflow district is connected to the one end of downcomer, and the other end leads to end filter vat in its characterized in that: the bottom filter cylinder is divided into four functional cavities of a rain cabin, a filter material cabin, a water pump cabin and a precipitation cabin, the position structure mode of each functional cabin in the bottom filter cylinder is vertical layered arrangement, and the bottom filter cylinder sequentially comprises the following components: the deluge bin sets up in the superiors of end filter vat, and filter media storehouse and water pump storehouse set up in the intermediate level of end filter vat side by side, deposit the storehouse and set up the bottommost of end filter vat, it is provided with washing unit, blowdown subassembly to deposit the storehouse.

2. The no-clean cotton bottom-filtering aquarium filtering system as defined in claim 1, wherein: the left end and the right end of the bottom of the settling bin are designed to be provided with inclined planes with slopes.

3. The no-clean cotton bottom-filtering aquarium filtering system as defined in claim 2, wherein: the integral structure who deposits the storehouse is "concave" font structure, deposits the storehouse and wraps up filter media storehouse, water pump storehouse, rain storehouse in the middle of half from bottom to top, the highest one side in storehouse bottom of depositing is into water district, and the one side that the bottom is the overflow district, the top height that enters water the district is less than overflow district top height, it still is equipped with the blast pipe to deposit the storehouse, the blast pipe sets up and is intaking the district top, the blast pipe height is higher than overflow district top height, the water pump storehouse still is equipped with anti-overflow pipe.

4. A disposable cotton bottom filter aquarium filtration system as claimed in claim 3 wherein: the main cylinder is internally provided with a bottom filtering cylinder washing water intake which is arranged on an overflow plate of an overflow area of the main cylinder.

5. The no-clean cotton bottom-filtering aquarium filtering system as defined in claim 4, wherein: and a secondary filtering bin is also arranged on the filter material bin, and the secondary filtering bin is connected with the water feeding pipe through a secondary filtering pipe.

6. The no-clean cotton bottom-filtering aquarium filtering system as defined in claim 5, wherein: and a water adding assembly is also arranged in the sedimentation bin.

7. The no-clean cotton bottom-filtering aquarium filtering system as defined in claim 6, wherein: the flushing assembly is arranged in the water inlet area and comprises a connecting pipe fitting, a control valve and a flushing nozzle, one end of the flushing assembly with the flushing nozzle is fixed in the water inlet area, the other end of the flushing assembly penetrates through the bottom of the overflow area of the main cylinder and is connected with a flushing water intake of a bottom filter cylinder on the overflow plate of the main cylinder, the sewage discharge assembly is arranged at the bottom of the sedimentation bin and comprises a connecting pipe fitting and a control valve, the sewage discharge assembly is connected with the lowest end of the bottom of the sedimentation bin and is arranged in the overflow area, the water adding assembly comprises a connecting pipe fitting, a water level controller and a control valve, the working water level line of the water level controller is lower than the height of the overflow plate of the sedimentation bin, the water outlet end of the water adding assembly leads to the main cylinder, and the water inlet end is connected with a tap water source.

8. A disposable cotton bottom filtered aquarium filtration system as claimed in any one of claims 6 to 7 wherein: the control valves in the sewage discharge assembly, the flushing assembly and the water adding assembly are electric valves, and the control valves are respectively and electrically connected with the time control equipment.

9. A disposable cotton bottom filtered aquarium filtration system as claimed in any one of claims 1 to 4 wherein: the middle layer of the bottom filter cylinder structure is also provided with a multifunctional bin which is arranged in parallel with the filter material bin and the water pump bin.