Hollow separation type filter

Abstract

A hollow separation type filter relates to a liquid filter and comprises a container, and a water inlet is formed in the upper portion of the container and connected with a water spray nozzle. The device is characterized in that a separation device and a storage device are arranged in the container, and the separation device is used for separating impurities from main water flow; the separating device comprises a rotating device or / and a flushing device; the separation device is used for guiding separated impurities into the storage device, the storage device comprises a filter material, and the filter material is used for filtering moisture carried by the impurities and storing the impurities; and the storage device is arranged in the air. The device has the advantages that impurities are discharged into the storage device inside or outside through the rotating device, the impurities are isolated from main water flow, the storage device is arranged in the air, the filtering efficiency is high, the water quality is good, and cleaning is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of filtering devices, and further to a liquid filter, especially a hollow separation and isolation type filter. Background Art

[0002] Taking the breeding of ornamental fish as an example, the factors affecting water quality include fish feces, food residues, etc. The main component of fish feces is ammonia nitrogen, and the main substance that damages water quality is ammonia. Initially, fish farming mainly relied on reducing the breeding quantity, controlling the feeding amount, and changing water in time to maintain water quality; the sewage at the bottom was pumped out by the siphon method, and then an equal amount of new water was added.

[0003] After the appearance of water pumps, the water quality can be better maintained by increasing the fluidity of the water body and establishing a filtration system. The filtration system includes: such as filter barrels, filter cotton, biochemical cotton, ceramic rings, etc.

[0004] At present, there are many types of filtering devices, which are mainly divided into: upper filtration, lower filtration, and external filter barrels.

[0005] Upper filtration (the filtration system is placed on the top of the fish tank), its advantages are: the filter materials are easy to clean and replace; the cost is relatively low. Its disadvantages are: it affects the aesthetics; the noise is relatively large; the energy consumption is relatively high; the placement of filter materials is limited; it is only suitable for small-scale breeding.

[0006] Lower filtration (the filtration system is placed at the bottom of the fish tank), its advantages are: it can accommodate a large amount of filter materials, and the filtration effect is strong; it does not affect the appearance of the main tank; it is suitable for breeding large fish or fish tanks that require efficient filtration. Its disadvantages are: the cost is relatively high; the energy consumption is relatively high; a relatively large bottom cabinet is required; the noise is relatively large; the bottom cabinet is prone to moisture and aging.

[0007] The external filter barrel is installed outside the fish tank, and its advantages are: 1. High aesthetics: It is only connected to the fish tank through two water pipes, and the overall appearance is neat. 2. Easy maintenance: The replacement and cleaning of filter materials are relatively simple. 3. Strong independence: It does not occupy the space inside the fish tank. 4. Safe and energy-saving: The pressure at both ends of the inlet and outlet is basically balanced or the pressure difference is not large, and the power requirement for the water pump is not high (the specific flow rate needs to be designed and matched according to the capacity of the fish tank), which is relatively energy-saving. 5. Low noise.

[0008] In contrast, the advantages of the external filter barrel are relatively obvious and it has been widely used.

[0009] Almost all existing filter barrel devices adopt the method of filtering layer by layer with the interior full of water (the upper filter and the lower filter also have this structure). Although there are multifunctional physical and biochemical filters inside, over time, when there is a lot of garbage, it is easy to get blocked. If not cleaned in time, it will cause a decrease in flow rate, or even cause blockage and overflow. Moreover, there is a lack of a function to isolate the filtered impurities (such as fish feces and leftover food) from the circulating water flow. All the impurities intercepted by the filter will be continuously washed by the circulating filtered water flow (referred to as the main water flow in the present invention), thereby continuously releasing the harmful substances contained in the impurities into the water, which is the main source of water pollution. Currently, although the filter barrel technology of many manufacturers is improving, unfortunately, it is limited to: increasing the capacity of the filter barrel, enhancing quietness, intelligent control (feeding fish mode, wave-making mode, control of high and low power periods, grade speed regulation, etc.), beautifying the appearance, strengthening sealing, etc.; and it does not fundamentally solve the main source of water pollution.

[0010] A "fish toilet" that appears on the market aims to isolate before the filter barrel. It adopts the principle of swirl flow or gravity sedimentation, and can only intercept and precipitate substances with a large specific gravity and easy to precipitate into the dead water area. However, for those with a small specific gravity and floating, they will get stuck on the net and block the net. And if the filter net is too fine, it is easy to get blocked, and if it is too thick, the filtering and interception effect is lacking. The key point is that the fish feces and garbage caught on the filter net of the "fish toilet" will also be continuously washed by the water flow, releasing harmful substances into the water.

[0011] A hollow separation and isolation type filter developed by the applicant can be installed before the upper filter, the lower filter or the filter barrel, and can be used under positive pressure or negative pressure, which better solves this problem. It can be made into precision products with corresponding high, low, large and small flow rates according to needs. The key point is that it has the function of filtering and isolating fish feces, so the ammonia nitrogen toxins in the fish feces are not easily released into the water, reducing the pollution of the water quality, reducing the pressure on the biochemical system, fundamentally reducing the accumulation of nitrates in the water, and naturally reducing the frequency of water changes. Summary of the Invention

[0012] The purpose of the present invention is to provide a hollow separation and isolation type filter, which has good filtering effect and is simple to clean and maintain.

[0013] The purpose of the present invention is achieved through the following scheme: A hollow separation and isolation type filter, including a container, an inlet is arranged at the upper part of the container, and the inlet is connected to a spray nozzle; an outlet is arranged at the lower part of the container, and it is characterized in that: a separation device and a storage device are arranged inside the container, and the separation device separates impurities from the main water flow; the separation device includes a rotating device or / and a flushing device; the separation device guides the separated impurities into the storage device, and the storage device includes filter media, and the filter media filters the water carried by the impurities and stores the impurities; the storage device is placed in the air.

[0014] Furthermore: The rotating device is placed on the supporting device and rotates under the action of the water flow ejected by the water spray nozzle.

[0015] The flushing device includes one of the following structures: One includes a water spray nozzle and a water pump, and the water pump is controlled by a regulator; the other includes a high-pressure nozzle, a high-pressure water pump, and the high-pressure water pump is controlled by a timer switch; the high-pressure nozzle is arranged at one of the following two positions: One is arranged above the separation device (for example, it can be arranged at an eccentric position on the container cover) and sprays water downward (obliquely downward) onto the separation device; the other is arranged below the separation device (for example, it is arranged on the supporting device) and sprays water upward (obliquely upward) onto the separation device.

[0016] The structure of the separation device includes: Below the arc plate is an arc net, and the cross-section of the arc plate and the arc net forms a zigzag structure; the arc net is a mesh structure that can filter water, and the main water flow passes through the arc net and directly leaks down; the bottom of the arc net is a filter tank, and a miscellaneous filter material is placed in the filter tank. There are small holes at the bottom of the filter tank for filtering water, and the miscellaneous filter material is a physical filter material.

[0017] The structure of the separation device includes: a rotating drum and an isolation storage bin; the rotating drum is cylindrical, with a bottom plate at the lower part, an opening at the upper part, and a filter net around the periphery. The water spray nozzle faces the filter net, and the main water flow leaks through the filter net to the outer ring of the rotating drum; the bottom plate of the lower part of the rotating drum adopts one of the following two structures: One is that the bottom plate is flat, and a spiral partition is arranged on the bottom plate. The spiral partition goes from the outer spiral to the inner, playing a guiding role, guiding a small part of the water with a large amount of impurities from the outside in, and the center of the spiral partition is the central outlet; the other is that the bottom plate is a funnel structure, and the lowest position is at the central outlet; the rotating drum is placed on the rotating drum seat, and several small holes are arranged around the rotating drum seat for the main water flow to leak down; the isolation storage bin is cylindrical, and a miscellaneous filter material is arranged at the lower part of the isolation storage bin to become a storage device. There are leakage holes at the bottom of the isolation storage bin for the water carried by the impurities to leak down.

[0018] The structure of the separation device includes: a filter net and an annular groove; the filter net is concave and is supported by a rotating disk. The rotating disk can rotate on the supporting disk, and a filter material is arranged in the annular groove around the supporting disk to become a storage device; the filter net and the rotating disk rotate under the action of the water flow of the water spray nozzle. On the one hand, the filter net retains impurities and filters down the main water flow; on the other hand, through the water spray and the centrifugal action of the rotating disk, the impurities on the filter net are transferred and stored on the filter material, and the water carried by the impurities leaks down through the water filtering holes under the annular groove.

[0019] For the rotating disk: a barrel-shaped side ring A is arranged at the upper part, and several radial supports A are arranged under the side ring A; there are holes / posts in the middle of the radial supports A; for the supporting disk: a barrel-shaped side ring B is arranged at the upper part, and several radial supports B are arranged under the side ring B, and there are posts / holes in the middle of the radial supports B; water leaks down through the gap between the radial supports A and the radial supports B.

[0020] The water spray nozzle is arranged at an off-center position of the container cover; the water spray nozzle is arranged tangentially to the rotating device, and the ejected water generates a driving force on the rotating device; the structure of the water spray nozzle is that several spiral vanes are arranged in the middle, and the spiral vanes distribute the water to the spray nozzles respectively, and then eject the water in several directions.

[0021] A filtering device is arranged below the storage device, and the filtering device refers to physical filter materials or / and biochemical filter materials; an air isolation is provided between the separation device and the filtering device.

[0022] The container is placed below the fish tank. The upper part of the water suction pipe communicates with the fish tank, the lower part of the water suction pipe communicates with the inlet of the container, the outlet of the container is placed above the water tank, and physical filter materials or / and biochemical filter materials are arranged in the water tank; a water pump is arranged at the bottom of the water tank, and the water pump returns the filtered purified water into the fish tank through a return water pipe.

[0023] A water pump is arranged at the water outlet or water inlet of the container, and the water pump is controlled by a controller.

[0024] The principle and core of the present invention are: through the rotating device or / and the flushing device, impurities are separated from the main water flow and stored in the air.

[0025] The beneficial effects of the present invention are: 1. Good filtering effect. A. Adopting the negative pressure principle, the filter screen is arranged in front of the water pump (when necessary, the positive pressure principle can also be adopted, and the filter screen is arranged behind the water pump), avoiding impurities being broken by the water pump impeller. The impurity particle size is large and easy to separate, so most impurities are intercepted by the filter screen; B. The filter screen is arranged in the air, so that the impurities can be easily separated from the water; thus, the filtering effect is good. 2. Good water quality. A. The function of the filter screen, since most impurities are intercepted by the filter screen, the pollution of water is reduced from the source; B. The setting of the storage device, under the action of water flow splashing and the centrifugal force of the rotating device, or through flushing by a high-pressure nozzle, the impurities are transferred to the filter materials in the storage device, and the impurities are separated from the main water flow, greatly reducing the probability of impurity pollution of water quality; C. The setting of multiple filter materials ensures good water quality through multiple filter materials. 3. Simple cleaning. The storage device is arranged in the air chamber, and the impurities are stored on the filter materials of the storage device after being filtered. The impurities have less water content and thus a large storage capacity, and are easy to clean. The setting of the high-pressure nozzle is more conducive to cleaning, and there is no need to frequently disassemble and wash the filter cotton filter screen. 4. Since the pollution of water quality is reduced from the source, a large amount of nitrifying bacteria is not required, the use amount of biochemical filter materials is reduced, the cost is reduced, and the oxygen consumption is reduced. 5. Adopting full sealing can prevent carbon dioxide from escaping. 6. Flexible installation, and can be placed at any position above or below the horizontal plane of the fish tank. 7. Suitable for various types of fish tanks and can meet different breeding requirements.

[0026] In order to enable the personnel in the technical field to better understand the solution of the present invention, and to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 FIG. 1 is a schematic structural view of Embodiment 1 of the present invention; Figure 2 FIG. 3 is a schematic structural view of the rotating disk and the supporting disk of Embodiment 1 of the present invention; Figure 4 FIG. 5 is a schematic structural view of the container cover and the water spray nozzle of Embodiment 1 of the present invention; Figure 6 FIG. 6 is a schematic view of the usage state of Embodiment 1 of the present invention; Figure 7 FIG. 7 is a schematic structural view of Embodiment 2 of the present invention; Figure 8 FIG. 8 is an exploded structural view of Embodiment 2 of the present invention; Figure 9 FIG. 9 is a schematic installation structural view of Embodiment 3 of the present invention; Figure 10 FIG. 11 is a schematic view of the non-rotating structure of the separation device of the present invention.

[0028] Figure 1 In the figures: 1 is the water outlet Ⅰ; 2 is the filter material ⅠA; 3 is the filter material ⅠB; 4 is the air chamber; 5 is the annular groove; 6 is the rotating disk, 61 is the side ring A, 62 is the radial support A; 7 is the filter screen; 8 is the container cover; 9 is the water inlet Ⅰ; 10 is the storage and impurity filter material Ⅰ; 11 is the supporting disk, 111 is the side ring B, 112 is the radial support B; 12 is the outer shell Ⅰ; 13 is the water filtering hole; 14 is the water spray nozzle, 141 is the spiral piece, 142 is the spray port; 15 is the nozzle inlet; 16 is the high-pressure nozzle; 17 is the water suction pipe Ⅰ; 18 is the water pump; 19 is the return water pipe Ⅰ; 20 is the fish tank Ⅰ; 21 is the water inlet pipe Ⅱ; 22 is the rotating drum, 221 is the side net, 222 is the spiral partition, 223 is the central outlet; 23 is the rotating drum seat, 231 is the leakage hole A; 24 is the isolation storage bin, 241 is the leakage hole B; 25 is the storage and impurity filter material Ⅱ; 26 is the filter material ⅡA; 27 is the filter material ⅡB; 28 is the water outlet pipe Ⅱ; 29 is the outer shell Ⅱ; 31 is the fish tank Ⅲ; 32 is the water suction port Ⅲ; 33 is the water suction pipe Ⅲ; 34 is the water inlet Ⅲ; 35 is the container A; 36 is the water outlet Ⅲ; 37 is the water tank; 38 is the water pump Ⅲ; 39 is the lower cabinet; 40 is the return water pipe Ⅲ; 41 is the return water port Ⅲ; 51 is the outer shell Ⅳ; 52 is the arc plate; 53 is the arc net; 54 is the filter tank; 55 is the storage and impurity filter material Ⅳ. DETAILED DESCRIPTION OF THE EMBODIMENTS Embodiment 1

[0029] This embodiment discloses a case where the filter screen 7 is used as the main device of the separation device, and the storage device is arranged around the continuous water flow and separated from the continuous water flow.

[0030] As shown in Figure 1 and 2As shown in Figures 3, 4, and 5, a hollow separation and isolation type filter includes a housing I 12. An inlet I 9 is provided at the upper part inside the housing I 12, and an outlet I 1 is provided at the lower part. The container is sequentially divided into an inlet device, a separation device, a storage device, and a filtration device from top to bottom. The separation device is placed in the air, or the separation device and the filtration device are separated by an air chamber 4.

[0031] The inlet device includes an inlet I 9, and the inlet I 9 is connected to a spray nozzle 14.

[0032] The separation device includes a filter screen 7. The filter screen 7 has a concave arc surface structure or is approximately a conical filter screen (or filter hopper) structure with a larger upper part and a smaller lower part. The filter screen 7 is placed on a rotating disk 6 and is supported by the rotating disk 6. The rotating disk 6 is placed on a support disk 11 and can rotate on the support disk 11. Around the lower part of the support disk 11 is an annular groove 5. The diameter of the annular groove 5 is larger than that of the support disk 11 and surrounds the support disk 11. A number of water filtering holes 13 are provided at the bottom of the annular groove 5, and a storage and impurity filtering material I 10 (a storage and impurity filtering material, that is, a filtering material for filtering and storing main impurities) is provided in the annular groove 5. The filter screen 7 and the rotating disk 6 rotate under the action of the water flow of the spray nozzle 14. On the one hand, the liquid filtered by the filter screen 7 enters the filtration device. On the other hand, through the splashing and centrifugal action of the spray nozzle 14, the impurities are stored on the filtering material in the annular groove 5, and the liquid in this part passes through the water filtering holes 13 under the annular groove 5 and enters the filtration device.

[0033] The mesh holes of the filter screen 7 are 100 - 350 meshes (preferably 200 - 300 meshes). When the present invention is used in certain industries, the filter screen 7 can be replaced by a permeable membrane. Ensure that the filter screen 7 can filter out most of the sundries.

[0034] The separation device is the core of the present invention, and its function is to separate impurities from water (referring to the main water flow, that is, most of the water). The water pump sucks to form a negative pressure air chamber in the middle part of the container (that is, the part where the separation device is located). A filter screen is provided in the air chamber. Most of the separated impurities are stored on the filtering material (provided in the annular groove 5) in the isolation function area through actions such as flushing, splashing, and centrifugation. The excess liquid will leak down and be recovered through the filtering material. Generally, the water with impurities in the fish tank is filtered and separated on the separation device in the air chamber. The separated impurities are stored in a dedicated storage area (on the storage device) and are in a separated state from the continuous water flow (main water flow). In this way, the impurities are in a state of poor water and semi-dryness, neither being continuously washed by the filtering water flow nor being able to store more impurities in the effective air chamber, achieving the purpose of reducing the number of disassembly and cleaning times. Since the fish feces are cleaned in time, the ammonia nitrogen in the fish feces cannot be released into the water, thereby reducing the decomposition of harmful substances into the water and damaging the water quality.

[0035] Impurities on the filter screen accumulate over time. When there are enough of them, they are flushed by a timed flushing device or a high-pressure spraying device onto the filter media in the annular groove 5. The impurities are isolated on the filter media. The filtered impurities are in a semi-dry state and can store a relatively large amount. The purpose is to isolate the impurities from the circulating filtered water flow, prevent the filtered impurities from being continuously scoured by the water flow, reduce the chance of harmful substances such as ammonia nitrogen, which is the main component of the impurities, decomposing into the water, thereby reducing the pressure on the biochemical system, reducing the amount of biochemical filter media used, fundamentally reducing the cost of the filtration system, and at the same time maintaining the water quality stable and meeting the requirements.

[0036] The filtration device in the outer shell Ⅰ12 includes filter media. The filter media includes filter media ⅠA2 and filter media ⅠB3. Specifically, filter media ⅠA2 can be selected as biochemical filtration material, and filter media ⅠB3 can be selected as physical filtration material. Physical filtration materials such as filter cotton, magic carpet, cashmere cotton, ultrafiltration cotton, etc. Biochemical filtration materials such as ceramic rings, nano rings, bacterial houses, activated carbon, biochemical cotton, etc.

[0037] A water pump 18 is provided on the pipeline at the water outlet Ⅰ1 (this can make the air chamber 4 in a negative pressure state). The water pump 18 can also be provided on the pipeline at the water inlet Ⅰ9 (this can make the air chamber 4 in a positive pressure state); the water pump is controlled by a controller, and the controller can adjust the running speed (power) of the water pump.

[0038] The structure of the rotating disk 6 is as follows: there is a side ring A61 at the upper part. The side ring A61 is in a barrel shape. Several radial supports A62 are provided under the side ring A61. Water can leak down through the gaps between the radial supports A62; a central hole / central column is provided in the middle of the radial support A62.

[0039] The structure of the support disk 11 is as follows: there is a side ring B111 at the upper part. The side ring B111 is in a barrel shape. Several radial supports B112 are provided under the side ring B111. Water can leak down through the gaps between the radial supports B112; a central column / central hole is provided in the middle of the radial support B112.

[0040] The rotating disk 6 is placed in the support disk 11. The central hole / central column provided in the middle of the radial support A62 cooperates with the central column / central hole provided in the middle of the radial support B112 to ensure that the rotating disk 6 can rotate on the support disk 11.

[0041] In the present invention, considering the complex composition and relatively sticky nature of fish feces, a flushing device is provided (see Figure 4 ). The flushing device includes a spray nozzle 14 connected to the water inlet Ⅰ9. The power of the water pump can be increased regularly as needed by driving the controller for flushing (for example, the normal operating flow rate is 1000 - 1500, and the flow rate can reach 4000 - 5000 during flushing. The water pump should have a certain surplus power to ensure that the filter screen can be flushed clean). The present invention can also be provided with a separate high-pressure water pump (see Figure 4A high-pressure flushing device is formed. The high-pressure flushing device includes a nozzle inlet 15 and a high-pressure nozzle 16. The high-pressure water pump is controlled by a timer switch to control the time and interval of high-pressure flushing. The high-pressure nozzle 16 flushes the filter screen regularly or irregularly to prevent the formation of biofilms on the fine filter screen, ensuring the water permeability and stable operation of the filter screen.

[0042] Above the said outer shell Ⅰ 12, there is a container cover 8 (see Figure 1 And Figure 4 ). The water inlet Ⅰ 9 is arranged on the container cover 8. The water inlet Ⅰ 9 is connected to a water spray nozzle 14 on the container cover. The water spray nozzle 14 is arranged at an off-center position on the container cover 8. Since the water spray nozzle 14 does not face the center of the filter screen 7 directly, but is arranged tangentially to the rotating device, that is, the radial angle between the water spray nozzle 14 and the filter screen 7 > 0°, the water sprayed generates a driving force on the rotating device (in the tangential direction of the filter screen), ensuring that the water flow generates a lateral driving force on the filter screen 7 and the rotating disk 6. Under the action of the water spray, the filter screen 7 and the rotating disk 6 are pushed to rotate. The rotation of the filter screen 7 is beneficial to the uniform use of the filter screen 7.

[0043] The structure of the said water spray nozzle 14 (see Figure 5 ) is: it adopts a triangular shape, and a spiral piece 141 is arranged in the middle. The spiral piece 141 distributes the water to the spray openings 142 respectively, and then sprays the water in three directions. The spiral piece 141 is a fixed structure, but due to its spiral shape, the water can be sprayed out rotationally from the spray openings 142.

[0044] A high-pressure nozzle 16 can also be arranged on the container cover 8. The high-pressure nozzle 16 is communicated with the nozzle inlet 15. The said high-pressure nozzle 16 is also arranged at an off-center position of the container cover 8 (the so-called high pressure of the high-pressure nozzle is relative to the water spray nozzle, and no too high water pressure is required), and is used to treat the fish feces adhering to the filter screen 7 regularly or irregularly. The said high-pressure nozzle can also be arranged below the filter screen 7 (such as arranged on the support disk 11), so that the high-pressure nozzle sprays water from the bottom (obliquely downward) to the top (obliquely upward), making it easier to strip the impurities from the filter screen 7.

[0045] When the present invention is in use, as Figure 6 shown, the outer shell Ⅰ 12 is placed below the fish tank Ⅰ 20. The water inlet Ⅰ 9 of the outer shell Ⅰ 12 is arranged at the bottom of the fish tank Ⅰ 20 through the water suction port Ⅰ of the water suction pipe Ⅰ 17 (i.e., the fish tank outlet pipe). The water outlet Ⅰ 1 of the outer shell Ⅰ 12 is communicated with the fish tank Ⅰ 20 through the return water pipe Ⅰ 19.

[0046] Under the action of the water spray nozzle 14, the rotary disk 6 and the filter screen 7 start to rotate. After the filter screen 7 filters out most of the fish feces, the water filtered by the filter screen 7 leaks down through the radial strut A62 and the radial strut B112 and enters the filtering device; under the centrifugal or splashing action of the high-speed jet of the water spray nozzle 14, or after being rinsed by a high-pressure nozzle (nozzle 16), impurities and the like reach the filter media in the annular groove 5, and the impurities are stored on the filter media. The filtered water then passes through the water filtering holes 13 under the annular groove 5 and enters the filtering device; after being filtered by the filter media of the filtering device, it returns to the fish tank I20 through the return water pipe I19 (the return water port I of the return water pipe I19 is arranged at the bottom or top of the fish tank I20).

[0047] The present invention can adopt a frequency conversion technology, that is: equipped with a variable frequency water pump, and users can adjust the flow rate according to needs, which is suitable for fish tanks of different sizes.

[0048] The present invention is an efficient, beautiful and flexible fish tank filtering system, which can be used as a multi-functional filter (filter barrel), or can be separately made into a related filtering device with the function of isolating the filtered things, or can be added before other filters, so as to improve the performance of the filtering equipment and achieve better effects.

[0049] There are two situations for the setting of the filter screen. One is to set it after the water pump, that is, the positive pressure principle; the positive pressure will break and mix the impurities by the high-speed water pump impeller, increasing the filtering difficulty and being unfavorable for filtering. The other is to set it before the water pump, that is, the negative pressure principle. The present invention utilizes the negative pressure principle and sets the filter screen before the water pump. Since the impurities are not broken and have a large particle size, most of the impurities are intercepted by the filter screen; setting the filter screen before the water pump also has the following advantages: 1. Protect the water pump. The filter screen can effectively intercept impurities, particulate matters and suspended matters in the water, prevent these impurities from entering the interior of the water pump, and avoid the wear or blockage of components such as the water pump impeller and bearing, thereby prolonging the service life of the water pump. 2. Improve the operation efficiency of the water pump. The filter screen can stabilize the water flow, reduce the impact of impurities in the water flow on the water pump impeller, and avoid the occurrence of cavitation phenomenon, thereby improving the working efficiency of the water pump. 3. Avoid the high-speed rotating impeller from breaking up the fish feces. The complete fish feces are easier to intercept and separate when sucked in, which is convenient for maintenance and cleaning. Cleaning or replacing the filter screen does not affect the normal operation of the water pump. 4. Reduce the system pressure loss. The filter screen can effectively filter impurities, reduce the blockage of the pipeline system by impurities, thereby reducing the system pressure loss and ensuring the efficient operation of the water pump under the designed working conditions. In short, it can effectively protect the water pump, improve the operation efficiency, be convenient for maintenance, and optimize the performance of the whole system. Embodiment 2

[0050] This embodiment reveals the situation where the rotating drum 22 is used as the main device of the separation device, and the storage device is arranged in the center of the continuous water flow and separated from the continuous water flow.

[0051] Such as Figure 7 、Figure 8 As shown in the figure: Inside the outer shell II 29 of the container, there are successively distributed a rotating drum 22, an isolation storage bin 24, filter media, i.e., filter materials, including filter media II A 26 and filter media II B 27; the filter media II A 26 can be a physical filter material, and the filter media II B 27 can be a biochemical filter material.

[0052] The rotating drum 22 is in the shape of a round barrel with an upper opening. The periphery is a side net 221 through which water can leak; a spiral partition 222 is provided at the lower part. The spiral partition 222 can direct water to the center, and a central outlet 223 is provided at the center of the spiral partition 222 for draining water downward; the rotating drum 22 is placed on a rotating drum seat 23, and a number of leakage holes A 231 are provided at the edge of the rotating drum seat 23 (see Figure 8 ), for leaking water; the isolation storage bin 24 is in the shape of a round barrel, and a storage miscellaneous filter media II 25 (a physical filter material) is provided at the lower part of the isolation storage bin 24, and a leakage hole B 241 is provided at the bottom of the isolation storage bin 24 for leaking water.

[0053] An inlet pipe II 21 is provided at the upper part of the outer shell II 29 of the container, and an outlet pipe II 28 is provided at the lower part.

[0054] During operation, after the main water flow passes through the side net 221 of the rotating drum 22, it then flows down through the leakage holes A 231 on the rotating drum seat 23; while a small part of the water containing a large amount of impurities is introduced into the central outlet 223 through the spiral partition 222 of the rotating drum 22, and passes through the storage miscellaneous filter media II 25 (storage miscellaneous filter media, i.e., filter media for filtering and storing main impurities), the impurities are stored on the storage miscellaneous filter media II 25, and a small amount of water leaks down after being filtered. All the water flowing down or leaking down is filtered by the filter media II A 26 and the filter media II B 27 and then reused. Embodiment 3

[0055] This embodiment discloses a situation where the separation device and the filtration device are separately arranged.

[0056] As Figure 9 shown, the fish tank III 31 is placed above the lower cabinet 39. The fish tank III 31 is used for raising fish. The water suction port III 32 of the water suction pipe III 33 is placed at the lower part or the bottom of the fish tank III 31. Inside the lower cabinet 39, there are a container A 35 and a water tank 37. The container A 35 is placed above the water tank 37 and is not in direct contact with the water in the water tank 37 (there is air isolation); physical filter media or / and biochemical filter media can be placed in the water tank 37.

[0057] A separation device is arranged inside the container A 35, including: one of a filter screen structure (see Embodiment 1) or a rotating drum structure (see Embodiment 2).

[0058] During installation and use, the suction pipe III 33 sucks the water containing impurities in the fish tank III 31 into the container A 35 (with an inlet III 34). After being separated by the separation device in the container A 35, it is discharged into the water tank 37 through the outlet III 36 of the container A 35. Then, through the water pump III 38, the filtered purified water is returned to the fish tank III 31 through the return pipe III 40 (return port III 41). Embodiment 4

[0059] For the separation device described in the present invention, instead of using a rotating device, it can also adopt, as shown in Figure 10 、 Figure 11 , to separate impurities from the main water flow. Figure 10 It is an asymmetric structure biased to one side, Figure 11 a circular symmetric structure.

[0060] In Figure 10 、 Figure 11 , an arc plate 52 is built inside the outer shell IV 51. Below the arc plate 52 is an arc net 53. The cross-section of the arc plate 52 and the arc net 53 forms a zigzag structure; the arc net 53 is meshed and can filter water. The main water flow passes through the arc net 53 and directly leaks down; the bottom of the arc net 53 is a filter tank 54. Inside the filter tank 54 is a storage impurity filter material IV 55. The bottom of the filter tank 54 has small holes for filtering water. The storage impurity filter material IV 55 is a physical filter material. Under the action of the water flow, impurities are washed towards the filter tank 54 and stored on the storage impurity filter material IV 55. The remaining structures will not be described in detail.

[0061] In the above embodiments, to distinguish similar terms, some terms in Embodiment 1 are denoted by I, some terms in Embodiment 2 are denoted by II, some terms in Embodiment 3 are denoted by III, and some terms in Embodiment 4 are denoted by IV.

[0062] The present invention can be arranged at the upper part, lower part or side of the fish tank; the water pump can also be placed in front of (positive pressure state) or behind (negative pressure state) the separation device according to needs.

[0063] The present invention can also be used in other scenarios, such as tap water supply, pharmaceutical industry, food and beverage industry, chemical industry, etc. It should be noted that for the sake of intuitive description in the embodiments of the present invention, a fish tank is used as an example for illustration. Therefore, terms such as inlet, outlet, and water pump are used. If it is used in other industries, terms such as liquid inlet, liquid outlet, and liquid pump can be used.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention, as long as they do not depart from the spirit and scope of the technical solutions of the present invention, shall all be covered within the scope of the claims of the present invention.

Claims

1. A hollow separation isolation filter, comprising a container, a water inlet is provided at the upper part of the container, the water inlet is connected to a water nozzle; a water outlet is provided at the lower part of the container, characterized in that: The container is provided with a separation device and a storage device, wherein the separation device separates impurities from the main water flow; the separation device includes a rotating device and / or a flushing device; The separation device introduces the separated impurities into the storage device, which includes a filter material, which filters the moisture brought by the impurities and stores the impurities.

2. A hollow separation isolation filter according to claim 1, characterized in that: The rotating device is placed on the supporting device, and the rotating device rotates under the action of the water flow sprayed by the water spray nozzle.

3. The hollow separation isolation filter according to claim 1, characterized in that: The flushing device includes one of the following structures: one includes a water spray nozzle and a water pump, and the water pump is controlled by a regulator; the other includes a high-pressure nozzle, a high-pressure water pump, and the high-pressure water pump is controlled by a timer switch; the high-pressure nozzle is set at one of the following two positions: one is set above the separation device, spraying water from top to bottom to the separation device; the other is set below the separation device, spraying water from bottom to top to the separation device.

4. The hollow separation isolation filter according to claim 1, characterized in that: The structure of the separation device includes: an arc net is provided below the arc plate, and the arc plate and the arc net cross section form a zigzag structure; the arc net is mesh-shaped and can filter water, and the main water flow directly flows through the arc net; the bottom of the arc net is a filter tank, and the filter tank has built-in impurity storage filter material, and the bottom of the filter tank is a small hole for filtering water, and the impurity storage filter material is a physical filter material.

5. The hollow separation isolation filter according to claim 1, characterized in that: The structure of the separation device includes: a drum and an isolation storage bin; the drum is barrel-shaped, with a bottom plate at the bottom, an opening at the top, a filter screen around it, a water nozzle facing the filter screen, and the main water flows through the filter screen to the outer ring of the drum; the bottom plate at the bottom of the drum adopts one of the following two structures: one is that the bottom plate is flat, and a spiral partition is arranged on the bottom plate, and the spiral partition spirals from the outside to the inside, playing a guiding role, and a small amount of water with a large amount of impurities is introduced from the outside, and the center of the spiral partition is the central outlet; the second is that the bottom plate is a funnel structure, and the central outlet is at the lowest position; the drum is placed on the drum seat, and a number of small holes are arranged around the drum seat for leaking the main water flow; the isolation storage bin is barrel-shaped, and the lower part of the isolation storage bin is provided with a storage filter material to form a storage device, and the bottom of the isolation storage bin is provided with a leakage hole for leaking the water brought by the impurities.

6. The hollow separation isolation filter according to claim 1, characterized in that: The structure of the separation device includes: a filter screen and an annular groove; the filter screen is concave and supported by a rotating disk, the rotating disk can rotate on the supporting disk, and filter material is arranged in the annular groove around the supporting disk to form a storage device; the filter screen and the rotating disk rotate under the action of water flow from the water nozzle, on the one hand, the filter screen retains impurities and filters the main water flow; on the other hand, through the splashing of water flow and the centrifugal action of the rotating disk, the impurities on the filter screen are transferred and stored on the filter material, and the moisture carried by the impurities leaks through the water filter holes under the annular groove.

7. A hollow separation isolation filter according to claim 6, characterized in that: The rotating disk has a barrel-shaped side ring A on the upper part, a plurality of spokes A under the side ring A, and a hole / column in the middle of the spokes A; the supporting disk has a barrel-shaped side ring B on the upper part, a plurality of spokes B under the side ring B, and a column / hole in the middle of the spokes B; water leaks down through the gap between the spokes A and the spokes B.

8. The hollow separation isolation filter according to claim 1, characterized in that: The water spray nozzle is arranged at a position off-center of the container cover; the water spray nozzle is arranged tangentially to the rotating device, and the sprayed water generates a driving force on the rotating device; the structure of the water spray nozzle is: a plurality of spiral blades are arranged in the middle, and the spiral blades distribute water to the spray port respectively, and then spray the water in several directions.

9. A hollow separation isolation filter according to claim 1 or 5 or 6, characterized in that: A filtering device is arranged below the storage device, and the filtering device refers to a physical filtering material or / and a biochemical filtering material; the separation device and the filtering device are isolated by air.

10. The hollow separation isolation filter according to claim 1, characterized in that: The container is placed below the fish tank, the upper part of the water suction pipe is connected to the fish tank, the lower part of the water suction pipe is connected to the inlet of the container, the outlet of the container is placed above the water tank, and the water tank has built-in physical filter material and / or biochemical filter material; a water pump is arranged at the bottom of the water tank, and the water pump returns the filtered clean water into the fish tank through the return pipe.

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