Purification method for aquaculture

By using a driving motor and lifting mechanism to rotate the filter net ball in the purification method for aquaculture, combined with the semicircular current collecting base and sealing ring, the problem of disassembly and cleaning the shell when the filter net is blocked is solved, and the purification efficiency of aquaculture water is improved and filtering effect.

CN119111459AInactive Publication Date: 2024-12-13HANSHAN COUNTY SHENGRONG FISHERY CO LTD
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Patent Information

Application Number
CN202411292994.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-14
Publication Date
2024-12-13
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing wastewater filtration device for aquaculture needs to be removed and cleaned when the filter net is blocked, resulting in a reduction in the purification efficiency of aquaculture water.

Method used

A purification method for aquaculture is designed, including precipitation, filtration, activated carbon adsorption and distillation steps, and the filter net ball is rotated by driving the motor, combining the semicircular current-collection base and lifting mechanism to achieve the removal of impurities without dismantling the shell, and enhance the The sealing and filtering effect of the filter mesh.

Benefits of technology

It effectively improves the cleaning efficiency of the filter net, avoids the reduction of the purification efficiency of aquaculture water, and ensures the sustainability of the filtration effect and the cleanliness of the water.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a purification method for aquaculture, and belongs to the technical field of aquaculture, the method comprises a filtering device, a driving motor in an arranged driving mechanism rotates to enable a filtering net ball to rotate, and impurities on the surface of the filtering net ball are scraped off in cooperation with an inclined plane at the edge of a semicircular flow collecting base during rotation; an electric telescopic rod in an arranged lifting mechanism extends to enable the bottom of a limiting ring body to be clamped at the upper end of a filter net ball, so that water needing to be filtered can be filtered from the surface, in contact with the filter net ball, between a connecting flange and the limiting ring body; impurities can be prevented from falling into the lower part and discharged along with filtered water, and the sealing ring is stressed and deformed when the limiting ring body moves downwards to be in contact with the surface of the filtering net ball, so that the sealing performance between the filtering net ball and the limiting ring body can be improved, and the situation that water flows outwards and is not filtered is avoided.
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Description

Technical Field

[0001] The invention belongs to the technical field of aquaculture, and in particular relates to a purification method for aquaculture. Background Art

[0002] Aquaculture, also known as aquaculture, refers to the cultivation of fish or various seafood in artificial fishing grounds on the shore for food. The wastewater generated by aquaculture contains a lot of excrement from fish and seafood, which is suspended in the water and affects the health of the fish. At this time, a treatment device is needed to filter the wastewater. When using the filter device, it is necessary to pay attention to whether the filter is damaged. As long as a part of the filter is damaged, in order not to affect the filtering effect, the filter needs to be replaced as a whole. Therefore, there is a special need for a wastewater filtration and treatment device for aquaculture.

[0003] For example, Chinese utility model patent CN219231667U discloses a wastewater filtering and treating device for aquaculture, in which a water inlet penetrates the housing to the top of the filter frame, the drive motor is started, the drive motor drives the filter frame to rotate, the sewage pipe is rotatably connected to the housing, thereby driving the sewage pipe to rotate and then the aquaculture wastewater enters the filter frame from the water inlet, the wastewater passes through the filter screen and the conical net, and the impurities are left on the filter screen and the conical net or on the inner bottom of the conical net. The rotation of the filter frame can make the wastewater filtering effect better. When the filter screen is damaged, it only needs to find the damaged filter screen and tighten the fixing bolts. The filter can be replaced without replacing the entire filter frame to prevent waste. When sewage needs to be discharged, the cleaning mechanism first flushes the impurities into the sewage pipe, then unscrews the connecting bolts connecting the end cover and the sealing groove, removes the end cover, and then the cleaning mechanism flushes the impurities into the sewage pipe and then discharges them. When the filter needs to be cleaned, start the water pump, the water pump draws water from the water tank, passes through the water pipe and the fixed pipe, and is sprayed out from the high-pressure nozzle to clean the filter, so that the impurities are separated from the filter and fall into the sewage pipe. In this way, a wastewater filtration and treatment device for aquaculture is completed.

[0004] Although the above-mentioned prior art can remove and replace the damaged part of the filter, when the filter is blocked, the outer shell needs to be removed and the internal filter needs to be cleaned to continue to maintain the filtering effect, which reduces the purification efficiency of aquaculture water. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In order to solve the problem raised in the above background technology that when the filter is blocked, the outer shell needs to be removed and the internal filter needs to be cleaned to continue to maintain the filtering effect, which reduces the purification efficiency of aquaculture water, the present invention adopts the following technical solution.

[0007] A purification method for aquaculture, the method comprising the following steps:

[0008] Step 1: precipitate the water to be purified, and let the large insoluble particles settle and separate from the water by standing, so as to remove the large insoluble particles;

[0009] Step 2: Filter the precipitated water through a filter device to separate the water-insoluble solid matter from the water, i.e., solid-liquid separation, to remove the poorly soluble or insoluble substances;

[0010] Step 3: Adsorb the filtered water and use the adsorption effect of activated carbon to remove some pigments and odors in the water in nature;

[0011] Step 4: Distill the adsorbed water and separate the mutually soluble liquid substances based on the principle of different boiling points of each substance.

[0012] Preferably, the filter device includes a filter device housing, a water inlet is provided at the upper end of the filter device housing and a water outlet is provided on the outer wall of the filter device housing near the bottom, a plurality of support legs are fixedly connected to the bottom of the filter device housing, an internal hollow filter ball is provided inside the filter device housing, both ends of the filter ball are fixedly connected to a rotating shaft, the rotating shafts on both sides pass through the outer wall of the filter device housing and are rotatably connected, a driving assembly is installed on one side of the rotating shaft, the driving assembly causes the filter ball to rotate, a semicircular collecting base is provided on the outer wall of the filter ball near the bottom, connecting blocks are fixedly connected to the outer walls of the two sides of the semicircular collecting base, the connecting blocks on both sides are fixedly connected to the inner wall of the filter device housing, and a drain pipe passing through the water outlet is fixedly connected to the bottom of the semicircular collecting base.

[0013] Preferably, a downwardly inclined slope is provided at the upper edge of the semicircular current collecting base, and the inclined surface scrapes off impurities on the surface of the filter ball when the filter ball rotates.

[0014] Preferably, an outer wall of the filter housing near the bottom is provided with a plug-in slot, a dirt collecting tray is plugged into the slot, and a pull-out handle is provided on the outer wall of the dirt collecting tray, and the scraped impurities fall into the dirt collecting tray for collection.

[0015] Preferably, a limit ring is provided on the inner side of the filter housing near the top, and a lifting assembly is installed on the upper end of the filter housing, which enables the limit ring to move upward or downward inside the filter housing.

[0016] Preferably, the lifting assembly includes an electric telescopic rod, and the electric telescopic rod is detachably connected to both sides of the upper end of the filter device housing, the telescopic ends of the electric telescopic rods on both sides are inserted into the interior of the filter device housing and are detachably connected to connecting flanges, and the limiting ring body is fixedly connected to the inner wall of the limiting ring body. The electric telescopic rod is extended or shortened to drive the limiting ring body to move upward or downward.

[0017] Preferably, a sealing ring is provided at the bottom of the limiting ring body, and the sealing ring is deformed by force when the limiting ring body moves downward and contacts the surface of the filter tennis ball.

[0018] Preferably, the upper end of the limiting ring body is fixedly connected to a receiving ring, the interior of the receiving ring is telescopically connected to an extension ring, the upper end of the extension ring is detachably connected to the inner top of the filter device housing, and the receiving ring moves up and down with the limiting ring body.

[0019] Preferably, the driving assembly includes a driving motor, and the outer wall of the filter device housing below the end of the rotating shaft on one side is fixedly connected to a mounting bracket, the upper end of the mounting bracket is detachably connected to the driving motor, the rotating end of the driving motor is detachably connected to the rotating shaft on one side, and the rotation of the driving motor drives the filter ball to rotate.

[0020] Preferably, the interior of the rotating shaft away from the driving motor is hollow, and the hollow part of the rotating shaft is connected to the interior of the filter ball. An extraction tube is inserted into the interior of the rotating shaft, and a sealing cap is threadedly connected to the protruding end of the rotating shaft.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The filter ball can be rotated by rotating the driving motor in the driving mechanism. When rotating, the impurities on the surface of the filter ball are scraped off by the inclined surface at the edge of the semicircular collecting base, so that the filter device can be cleaned without disassembling the outer shell.

[0023] 2. By extending the electric telescopic rod in the lifting mechanism, the bottom of the limiting ring body is stuck on the upper end of the filter ball, so that the water to be filtered can be filtered from the surface of the filter ball between the connecting flange and the limiting ring body, which can prevent impurities from falling below and being discharged with the filtered water.

[0024] 3. The sealing ring is deformed by force when the limiting ring moves downward and contacts the surface of the filter ball, thereby increasing the sealing between the filter ball and the limiting ring, preventing water from flowing out and causing no filtration.

[0025] 4. Through the expansion and contraction of the extending ring and the receiving ring in coordination with the expansion and contraction of the electric expansion rod, the water can always be located inside the limiting ring body to contact the filter tennis ball for filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a purification method for aquaculture in the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the housing of the filter device in the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the filtering tennis ball in the present invention;

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the filtering tennis ball in the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the limiting ring in the present invention;

[0031] Figure 6 It is a schematic diagram of the telescopic connection structure of the extending ring and the receiving ring in the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the semicircular current collecting base in the present invention;

[0033] Figure 8 It is a schematic diagram of the structure of the dirt collecting tray in the present invention.

[0034] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0035] 100. Filter housing; 101. Water inlet; 102. Water outlet; 103. Support legs;

[0036] 104. Plug-in slot; 105. Mounting bracket;

[0037] 200, filter ball; 201, drive motor; 202, rotating shaft; 203, blocking cap;

[0038] 204, extraction tube;

[0039] 300, limiting ring body; 301, connecting flange; 302, electric telescopic rod; 303, extension ring;

[0040] 304, sealing ring; 305, receiving ring;

[0041] 400, semicircular collecting base; 401, connecting block; 402, drain pipe;

[0042] 500. Trash collection tray; 501. Pull-out handle. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0046] like Figure 1 As shown, it is a schematic diagram of the structure of a purification method for aquaculture in a preferred embodiment of the present invention. The purification method for aquaculture in this embodiment comprises the following steps:

[0047] Step 1: precipitate the water to be purified, and let the large insoluble particles settle and separate from the water by standing, so as to remove the large insoluble particles;

[0048] Step 2: Filter the precipitated water through a filter device to separate the water-insoluble solid matter from the water, i.e., solid-liquid separation, to remove the poorly soluble or insoluble substances;

[0049] Step 3: Adsorb the filtered water and use the adsorption effect of activated carbon to remove some pigments and odors in the water in nature;

[0050] Step 4: Distill the adsorbed water and separate the mutually soluble liquid substances based on the principle of different boiling points of each substance.

[0051] The above-mentioned filtering device includes a filtering device housing 100, a water inlet 101 is arranged at the upper end of the filtering device housing 100, and a water outlet 102 is arranged on the outer wall of the filtering device housing 100 near the bottom, and a plurality of supporting legs 103 are fixedly connected to the bottom of the filtering device housing 100. In this embodiment, water to be filtered enters through the water inlet 101 and is discharged through the water outlet 102 after filtration.

[0052] like Figure 2 , Figure 3 as well as Figure 4As shown, it is a schematic diagram of the structure of the filter housing, a schematic diagram of the structure of the filter ball and a schematic diagram of the cross-sectional structure of the filter ball in this embodiment. A hollow filter ball 200 is arranged inside the filter housing 100. The two ends of the filter ball 200 are fixedly connected with a rotating shaft 202. The rotating shafts 202 on both sides pass through the outer wall of the filter housing 100 and are rotatably connected. The outer wall of the filter housing 100 below the end of the rotating shaft 202 on one side is fixedly connected with a mounting bracket 105. The upper end of the mounting bracket 105 is detachably connected with a driving motor 201. The rotating end of the driving motor 201 is detachably connected to the rotating shaft 202 on one side. In this embodiment, water to be filtered enters through the water inlet 101 and falls on the top of the filter ball 200, is filtered by the filter ball 200, and finally falls into the bottom of the filter housing 100 and is discharged from the water outlet 102. By rotating the driving motor 201, the filter ball 200 can be rotated to prevent water from falling on the same position of the filter ball 200 for a long time, causing the holes to be blocked by impurities, making it impossible to filter.

[0053] It is worth noting that the above-mentioned driving motor 201 is a driving component in this embodiment, and the driving component includes but is not limited to the driving motor 201. Any component that can rotate the filtering tennis ball 200 can be applied to this embodiment.

[0054] like Figure 4 As shown, during filtering, some impurities will enter the interior of the filter ball 200. In order to better clean the impurities inside the filter ball 200, in this embodiment, the interior of the rotating shaft 202 away from the side of the driving motor 201 is hollow, and the hollow part inside the rotating shaft 202 is connected to the interior of the filter ball 200, and the extraction tube 204 is inserted into the interior of the rotating shaft 202. The protruding end of the rotating shaft 202 is threadedly connected with a blocking cap 203. In this embodiment, when it is necessary to clean the interior of the filter ball 200, first remove the blocking cap 203, and insert the extraction tube 204 in the vacuum cleaner into the interior of the rotating shaft 202 until the interior of the filter ball 200, so that the impurities inside the filter ball 200 can be adsorbed, which makes it easier to clean.

[0055] like Figure 5As shown, it is a schematic diagram of the cross-sectional structure of the filtering tennis ball in this embodiment, the upper ends of the filtering device housing 100 are detachably connected with electric telescopic rods 302, the telescopic ends of the electric telescopic rods 302 on both sides are inserted into the interior of the filtering device housing 100 and are detachably connected with connecting flanges 301, and the inner wall of the connecting flange 301 is fixedly connected with a limiting ring body 300. In this embodiment, the bottom of the limiting ring body 300 is stuck on the upper end of the filtering tennis ball 200 by extending the electric telescopic rod 302, so that the water to be filtered can contact the surface of the filtering tennis ball 200 between the connecting flange 301 and the limiting ring body 300 for filtration, which can prevent impurities from falling below and being discharged with the filtered water.

[0056] It is worth noting that the above-mentioned electric telescopic rod 302 is a lifting component in this embodiment. The lifting component includes but is not limited to the electric telescopic rod 302. As long as it is a component that can move the limiting ring body 300 up and down, it can be applied to this embodiment.

[0057] like Figure 6 As shown, it is a schematic diagram of the telescopic connection structure between the extending ring and the receiving ring in this embodiment. In order to prevent water from flowing out when the limiting ring body 300 contacts the filter ball 200, in this embodiment, a sealing ring 304 is provided at the bottom of the limiting ring body 300. The sealing ring 304 is deformed by force when the limiting ring body 300 moves downward and contacts the surface of the filter ball 200, thereby increasing the sealing between the filter ball 200 and the limiting ring body 300, thereby preventing water from flowing out and causing no filtration.

[0058] like Figure 5 As shown, in order to further reduce the outflow of water, in this embodiment, the upper end of the limiting ring body 300 is fixedly connected with a storage ring 305, and the interior of the storage ring 305 is telescopically connected with an extension ring 303, and the upper end of the extension ring 303 is detachably connected to the inner top of the filter device housing 100. In this embodiment, through the telescopic movement of the extension ring 303 and the storage ring 305 and the telescopic movement of the electric telescopic rod 302, the water can always be located inside the limiting ring body 300 to contact the filter tennis ball 200 for filtration.

[0059] like Figure 6 as well as Figure 7As shown, it is a schematic diagram of the telescopic connection structure between the extending ring and the receiving ring and a schematic diagram of the semicircular collecting base structure in this embodiment. A semicircular collecting base 400 is provided on the outer wall of the filter ball 200 near the bottom, and the outer walls on both sides of the semicircular collecting base 400 are fixedly connected with connecting blocks 401, and the connecting blocks 401 on both sides are fixedly connected to the inner wall of the filter device housing 100, and the bottom of the semicircular collecting base 400 is fixedly connected with a drain pipe 402 passing through the water outlet 102. In this embodiment, after long-term filtration of impurities left on the surface of the filter ball 200, the electric telescopic rod 302 is contracted and the driving motor 201 is rotated to drive the filter ball 200 to rotate, so that the impurities can fall to the outside. By setting the semicircular collecting base 400, the filtered water is discharged through the drain pipe 402, which can prevent impurities from being discharged together.

[0060] like Figure 7 As shown, in order to make it easier for impurities to fall off the surface of the filter ball 200, in this embodiment, a downward inclined slope is provided at the upper edge of the semicircular collecting base 400. The inclined surface makes it easier for the filter ball 200 to scrape off impurities when it rotates, and the filter ball 200 is cleaned more thoroughly.

[0061] like Figure 2 as well as Figure 8 As shown, it is a schematic diagram of the structure of the filter device shell and the structure of the dirt collecting tray in this embodiment. The outer wall of the filter device shell 100 near the bottom is provided with a plug-in slot 104, and the interior of the plug-in slot 104 is plugged with the dirt collecting tray 500. The outer wall of the dirt collecting tray 500 is provided with a pull-out handle 501. In this embodiment, the cleaned impurities fall into the interior of the dirt collecting tray 500, and the impurities can be cleaned by holding the pull-out handle 501 and pulling it outward.

[0062] In summary, the specific use of this embodiment is as follows: first, the water to be filtered is connected to the water inlet 101, and the electric telescopic rods 302 on both sides are extended so that the bottom of the limiting ring body 300 contacts the surface of the filter ball 200. The sealing ring 304 is set to increase the sealing performance between the limiting ring body 300 and the filter ball 200. The water passes through the inside of the limiting ring body 300 and falls on the surface of the filter ball 200 for filtration. The filtered water falls into the interior of the semicircular collecting base 400 and is discharged from the drain pipe 402. Long-term filtration will cause excessive impurities in the limiting ring body 300. At this time, the water inlet valve is closed and the electric telescopic rods 302 on both sides are started to contract, so that the limiting ring body 300 leaves the surface of the filter ball 200. The drive motor 201 is started to rotate the filter ball 200, and the impurities are scraped off and fall into the interior of the dirt collecting tray 500 by cooperating with the inclined surface at the edge of the semicircular collecting base 400. The impurities inside can be cleaned by pulling out the handle 501.

[0063] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A purification method for aquaculture, characterized in that: The method comprises the following steps: Step 1: precipitate the water to be purified, and let the large insoluble particles settle and separate from the water by standing, so as to remove the large insoluble particles; Step 2: Filter the precipitated water through a filter device to separate the water-insoluble solid matter from the water, i.e., solid-liquid separation, to remove the poorly soluble or insoluble substances; Step 3: Adsorb the filtered water and use the adsorption effect of activated carbon to remove some pigments and odors in the water in nature; Step 4: Distill the adsorbed water and separate the mutually soluble liquid substances based on the principle of different boiling points of each substance.

2. The aquaculture purification method according to claim 1, characterized in that: The filter device comprises a filter device housing (100), wherein the upper end of the filter device housing (100) is provided with a water inlet (101), and the outer wall of the filter device housing (100) close to the bottom is provided with a water outlet (102), the bottom of the filter device housing (100) is fixedly connected with a plurality of support legs (103), a hollow filter ball (200) is provided inside the filter device housing (100), and rotating shafts (202) are fixedly connected at both ends of the filter ball (200), and the rotating shafts (202) on both sides pass through the filter device housing. The outer wall of the filter device (100) is rotatably connected, a driving assembly is installed on one side of the rotating shaft (202), and the driving assembly causes the filter ball (200) to rotate. A semicircular current collecting base (400) is provided on the outer wall of the filter ball (200) near the bottom, and connecting blocks (401) are fixedly connected to the outer walls of the semicircular current collecting base (400) on both sides. The connecting blocks (401) on both sides are fixedly connected to the inner wall of the filter device housing (100), and a drainage pipe (402) passing through the water outlet (102) is fixedly connected to the bottom of the semicircular current collecting base (400).

3. The aquaculture purification method according to claim 2, characterized in that: A downwardly inclined surface is provided at the upper edge of the semicircular current collecting base (400), and when the filter ball (200) rotates, the inclined surface scrapes off impurities on the surface of the filter ball (200).

4. The aquaculture purification method according to claim 3, characterized in that: An inserting groove (104) is provided on the outer wall of the filter device housing (100) near the bottom, a dirt collecting tray (500) is inserted into the inserting groove (104), and a pull-out handle (501) is provided on the outer wall of the dirt collecting tray (500), so that scraped impurities fall into the interior of the dirt collecting tray (500) for collection.

5. The aquaculture purification method according to claim 4, characterized in that: A limit ring (300) is arranged on the inner side of the filter device housing (100) near the top, and a lifting assembly is installed on the upper end of the filter device housing (100), which enables the limit ring (300) to move upward or downward inside the filter device housing (100).

6. The aquaculture purification method according to claim 5, characterized in that: The lifting assembly comprises an electric telescopic rod (302), the electric telescopic rod (302) being detachably connected to both sides of the upper end of the filter device housing (100), the telescopic ends of the electric telescopic rods (302) on both sides being inserted into the interior of the filter device housing (100) and being detachably connected to connecting flanges (301), the limiting ring body (300) being fixedly connected to the inner wall of the limiting ring body (300), and the electric telescopic rod (302) being extended or shortened drives the limiting ring body (300) to move upward or downward.

7. The aquaculture purification method according to claim 6, characterized in that: A sealing ring (304) is provided at the bottom of the limiting ring body (300), and the sealing ring (304) is deformed by force when the limiting ring body (300) moves downward and contacts the surface of the filtering tennis ball (200).

8. The aquaculture purification method according to claim 7, characterized in that: The upper end of the limiting ring body (300) is fixedly connected to a receiving ring (305), the interior of the receiving ring (305) is telescopically connected to an extension ring (303), the upper end of the extension ring (303) is detachably connected to the inner top of the filter device housing (100), and the receiving ring (305) moves up and down following the limiting ring body (300).

9. The aquaculture purification method according to claim 8, characterized in that: The driving assembly comprises a driving motor (201); an outer wall of the filter device housing (100) located below the end through which a rotating shaft (202) passes is fixedly connected to a mounting bracket (105); the upper end of the mounting bracket (105) is detachably connected to the driving motor (201); the rotating end of the driving motor (201) is detachably connected to the rotating shaft (202) on one side; the driving motor (201) rotates to drive the filter ball (200) to rotate.

10. The aquaculture purification method according to claim 9, characterized in that: The interior of the rotating shaft (202) on the side away from the driving motor (201) is hollow, and the hollow interior of the rotating shaft (202) is connected to the interior of the filter ball (200). An extraction tube (204) is inserted into the interior of the rotating shaft (202), and a plugging cap (203) is threadedly connected to the protruding end of the rotating shaft (202).