A fish pond drum filter with automatic cleaning structure of filter cotton

Abstract

The present application relates to water filtration technical field, especially to a fish pond drum filter with filter cotton automatic cleaning structure, including a shell, the shell is fixedly connected with a flow-through shell, the shell is rotatably connected with a filter cartridge, the filter cartridge is fixedly connected with a gear ring, the shell is fixedly connected with a first motor, the output shaft of the first motor is fixedly connected with a first turntable, the shell is rotatably connected with a rotating shaft in a penetrating manner, the rotating shaft is fixedly connected with a gear engaged with the gear ring, the rotating shaft is provided with a first turntable, the flow-through shell is slidably connected with mirror image distributed filter cotton, the flow-through shell is fixedly connected with mirror image distributed detection tubes, the two ends of the detection tubes are respectively sealingly slidably connected with a float and a switching rod, the blocking state of the filter cotton is detected, two filter cottons are independently switched and operated, the filter cotton is replaced under the non-stop state, the filter cotton is avoided to be replaced, a large amount of time is saved, and the filtering efficiency of water in the fish pond is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water filtration, in particular to a fish pond drum filter with automatic filter cotton cleaning structure. BACKGROUND

[0002] The fish pond drum filter is a high-efficiency water treatment equipment used in aquaculture industry, mainly used for removing solid waste and other suspended particles in water. Its working principle is to perform preliminary filtration through a cylindrical filter screen, so that when the water flows through the cylindrical filter screen, the solid waste is trapped inside the filter screen, and the clean water flows through the cylindrical filter screen. Then, the preliminarily filtered water is subjected to deep filtration by filter cotton to filter out the fine suspended particles inside, and then the filtered water is returned to the fish pond for circulation to keep the water in the fish pond clean. However, since the filter cotton will be blocked by small impurities after long-term use, the flow capacity of the water through the filter cotton is reduced, which results in that the water in the fish pond cannot be subjected to deep filtration and cannot be returned to the fish pond, thereby affecting the cleanliness of the water in the fish pond. Therefore, the user needs to clean or replace the filter cotton regularly to maintain the normal operation of the drum filter. However, when replacing the filter cotton in the existing drum filter, the drum filter needs to be stopped, at which time the filtration of the water in the fish pond by the drum filter will also stop. Such a process will waste a lot of time and greatly reduce the filtration efficiency of the water in the fish pond. SUMMARY

[0003] In order to overcome the shortcomings mentioned in the background, the present application provides a fish pond drum filter with automatic filter cotton cleaning structure.

[0004] Technical solution: A fish pond drum filter with automatic cleaning structure of filter cotton, comprising a shell, the shell is fixedly connected with a flow shell, the shell is rotatably connected with a filter cartridge, one side of the filter cartridge is fixedly connected with a gear ring, one side of the shell close to the gear ring is fixedly connected with a first motor, the output shaft of the first motor is fixedly connected with a first turntable, the shell close to the gear ring is rotatably connected with a rotating shaft, the rotating shaft is fixedly connected with a gear meshing with the gear ring, the rotating shaft is provided with a first turntable, the first turntable is attached to the first turntable, the shell is fixedly connected and communicated with a T-shaped pipe, the flow shell is provided with mirror image distributed cavities, the mirror image distributed cavities are communicated with the T-shaped pipe, the flow shell is slidably connected with mirror image distributed filter cotton, the mirror image distributed filter cotton is located in the adjacent cavity respectively, the flow shell is fixedly connected with mirror image distributed detection tubes, the two ends of the detection tube are respectively sealed and slidably connected with a float and a switching rod, the float is located in the adjacent cavity of the flow shell, a three-way valve is arranged on the T-shaped pipe, the mirror image distributed switching rods are extruded with the valve rod of the three-way valve, the shell is provided with a backflushing assembly for backflushing the filter cartridge, the flow shell is provided with a transfer cleaning assembly for cleaning the filter cotton.

[0005] As preferred, the backflushing assembly comprises a backflushing pipeline fixedly connected to the inside of the shell, one end of the backflushing pipeline is fixedly connected and communicated with a water pump, the other end of the backflushing pipeline is fixedly connected and communicated with a linear array of backflushing heads, the shell is fixedly connected with a blowdown pipe, the blowdown pipe is fixedly connected and communicated with a collection shell, the collection shell is located in the inside of the filter cartridge.

[0006] As preferred, the transfer cleaning assembly comprises a first push rod symmetrically distributed in the center, the mirror image distributed first push rods are fixedly connected to the inside of the flow shell, the telescopic ends of the mirror image distributed first push rods are fixedly connected with the adjacent filter cotton respectively, the flow shell is fixedly connected with mirror image distributed drain pipes, the mirror image distributed drain pipes are communicated with the adjacent cavities of the flow shell respectively, the drain pipes are located above the adjacent filter cotton, the outside of the flow shell is fixedly connected with mirror image distributed cleaning tables, the cleaning tables are slidably connected with the adjacent filter cotton, the bottom of the cleaning table is fixedly connected and communicated with a sewage outlet pipe, the outside of the flow shell is provided with a cleaning assembly for cleaning all the filter cotton.

[0007] As preferred, the cleaning assembly comprises mirror-imaged second push rods, each of which is fixedly connected to the side wall of the flow-through shell, and the telescopic end of each second push rod is slidingly connected with a sliding plate, and the outside of the flow-through shell is fixedly connected with mirror-imaged fixed plates, and each fixed plate is provided with a sliding groove, and each sliding groove is slidingly connected with an adjacent sliding plate, and each sliding plate is slidingly connected with a cleaning plate, and each cleaning plate is in contact with an adjacent filter cotton, and a linear array of first elastic elements is arranged between each sliding plate and an adjacent cleaning plate, and each sliding plate is fixedly connected with a water injection nozzle.

[0008] As preferred, each sliding groove is composed of linearly-arranged W-shaped grooves, each W-shaped groove is composed of mirror-imaged four inclined grooves and mirror-imaged two transverse grooves, each transverse groove is located between two adjacent inclined grooves, and the two transverse grooves are connected end to end.

[0009] As preferred, the cleaning assembly further comprises a limiting assembly for preventing splashing of water sprayed by the linear array of backflushing heads, the limiting assembly is arranged on the linear array of backflushing heads, and the limiting assembly comprises a fitting shell, the fitting shell is fixedly connected to the linear array of backflushing heads, the inside of the fitting shell is fixedly connected with a blocking air bag, the linear array of backflushing heads are located inside the blocking air bag, the blocking air bag is in contact with the filter cartridge, and the backflushing pipeline is provided with an expansion assembly for adjusting the contact degree of the blocking air bag and the filter cartridge.

[0010] As preferred, the expansion assembly comprises mirror-imaged first communication pipes, each first communication pipe is fixedly connected and communicated to the backflushing pipeline, the backflushing pipeline is fixedly connected with mirror-imaged first fixed cylinders, a piston plate is sealingly and slidingly connected in each first fixed cylinder, a second communication pipe is fixedly connected and communicated between each first fixed cylinder and the blocking air bag, and the shell is provided with a scraping assembly for scraping impurities inside the filter cartridge.

[0011] As preferred, the scraping assembly comprises a second motor, the second motor is fixedly connected to one side of the shell close to the first motor, the output shaft of the second motor is fixedly connected with a second turntable, the shell is through-rotationally connected with a rotating member close to the first motor, the rotating member is spline-connected with a second turntable located outside the shell, the second turntable is in contact with the second turntable, one side of the shell close to the rotating member is slidingly connected with a sliding frame, the sliding frame is slidingly connected with the rotating member, the sliding frame is fixedly connected with a flexible scraper in contact with the filter cartridge, and the backflushing pipeline is provided with an adjusting assembly for adjusting the rotation speed of the filter cartridge.

[0012] As preferred, the adjusting assembly comprises a third communicating pipe fixedly connected and communicated with the backflushing pipe, the shell is fixedly connected with a second fixed cylinder fixedly connected with the third communicating pipe, the second fixed cylinder is sealingly and slidingly connected with a piston shaft, and the two form a closed cavity communicated with the third communicating pipe, the piston shaft is fixedly connected with a pushing frame, a second elastic element is arranged between the piston shaft and the second fixed cylinder, the first rotating disc and the second rotating disc are both rotationally connected with the pushing frame, and the first rotating disc is spline-connected with the rotating shaft.

[0013] As preferred, the first rotating disc and the second rotating disc are both circular truncated cones and are oppositely arranged.

[0014] Compared with the prior art, the present application has the following advantages: 1. By detecting the blocking state of the filter cotton, the two filter cottons are automatically switched to operate, the filter cotton is replaced without stopping the machine, the filter cotton is replaced without stopping the machine, a large amount of time is wasted, and the filtering efficiency of the water in the fish tank is reduced.

[0015] 2. By cleaning the filter cotton outside with the cleaning plate, the impurities outside the filter cotton are cleaned, the filter cotton is separated from the impurities, the filtering capacity of the filter cotton is restored, and the fish tank water filtering work cannot be performed due to the delay of manual cleaning.

[0016] 3. By reciprocating the flexible scraper at the backflushing position of the filter cylinder, the impurities attached to the inside of the filter cylinder are transported to the collection shell by means of the backflushing water flow, the blocking degree of the impurities in the filter cylinder is reduced, and the backflushing rate of the external backflushing head to the filter cylinder is improved.

[0017] 4. By detecting the blocking degree of the filter cylinder with the second fixed cylinder and the piston shaft, the transmission ratio of the first rotating disc to the first rotating disc is automatically reduced and the transmission ratio of the second rotating disc to the second rotating disc is increased, the scraping speed of the flexible scraper to the impurities in the filter cylinder is improved, the blocking degree of the impurities in the filter cylinder is reduced, the rotating speed of the filter cylinder is reduced, the backflushing time of the linear array backflushing head to the filter cylinder is prolonged, and the backflushing effect of the backflushing head to the filter cylinder is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the shell of the present application;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the filter cylinder and the gear ring of the present application;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the flow shell of the present application;

[0022] Figure 5 It is a perspective view of the float and the switching rod of the application;

[0023] Figure 6 It is a perspective view of the filter cartridge of the application;

[0024] Figure 7 It is a perspective view of the drain pipe and the second push rod of the application;

[0025] Figure 8 It is a perspective view of the cleaning plate and the first elastic element of the application;

[0026] Figure 9 It is a perspective view of the fixed plate and the sliding groove of the application;

[0027] Figure 10 It is a perspective view of the fitting shell and the blocking air bag of the application;

[0028] Figure 11 It is a perspective view of the second motor and the second rotary table of the application;

[0029] Figure 12 It is a perspective view of the sliding frame and the flexible scraper of the application;

[0030] Figure 13 It is a perspective view of the second fixed cylinder and the piston shaft of the application.

[0031] In the figure, 1 is the shell, 2 is the flow-through shell, 3 is the filter cartridge, 4 is the tooth ring, 5 is the first motor, 6 is the first rotary table, 7 is the gear, 8 is the first rotary disc, 9 is the T-shaped pipe, 10 is the filter cotton, 11 is the detection pipe, 12 is the float, 13 is the switching rod, 201 is the water pump, 202 is the backflushing pipe, 203 is the backflushing head, 204 is the drain pipe, 205 is the collection shell, 301 is the first push rod, 302 is the drain pipe, 303 is the cleaning table, 304 is the drain pipe, 305 is the second push rod, 306 is the sliding plate, 307 is the fixed plate, 308 is the sliding groove, 309 is the cleaning plate, 310 is the first elastic element, 311 is the water injection nozzle, 401 is the fitting shell, 402 is the blocking air bag, 403 is the first communication pipe, 404 is the first fixed cylinder, 405 is the piston plate, 406 is the second communication pipe, 501 is the second motor, 502 is the second rotary table, 503 is the rotating part, 504 is the second rotary disc, 505 is the sliding frame, 506 is the flexible scraper, 601 is the third communication pipe, 602 is the second fixed cylinder, 603 is the piston shaft, 604 is the pushing frame, 605 is the second elastic element. DETAILED DESCRIPTION

[0032] The application will be further described in connection with the embodiments shown in the drawings.

[0033] After prolonged use, tiny impurities can clog the filter cotton, reducing the flow of water through it. This prevents the water in the fishpond from undergoing deep filtration and from flowing back into the pond, thus affecting the cleanliness of the water. Therefore, users need to clean or replace the filter cotton regularly to maintain the normal operation of the drum filter. However, when replacing the filter cotton, the drum filter needs to be stopped, which also stops the filtration of the water in the fishpond. This process continues until the filter cotton is successfully replaced, greatly reducing the filtration efficiency of the water in the fishpond.

[0034] Example 1: A fish pond rotary drum filter with an automatic filter cotton cleaning structure, such as... Figures 1-5As shown, the device includes a housing 1, a flow shell 2 fixedly connected to the right side of the housing 1, a filter cartridge 3 rotatably connected inside the housing 1, a gear ring 4 fixedly connected to the left side of the filter cartridge 3, a first motor 5 fixedly connected to the left side of the outer casing 1, a first turntable 6 fixedly connected to the output shaft of the first motor 5, the first turntable 6 being frustoconical with its smaller diameter end located on the left side, a rotating shaft rotatably connected through the left side of the housing 1, a gear 7 fixedly connected to the rotating shaft and meshing with the gear ring 4, a first turntable 8 provided on the gear 7, the first turntable 8 fitting against the first turntable 6, so that the output shaft of the first motor 5 passes through the first turntable 6, the first turntable 8, the gear 7, and... The toothed ring 4 drives the filter cartridge 3 to rotate, so that the filter cartridge 3 can evenly filter impurities in the fish pond water. The right side of the outer shell 1 is fixedly connected to and connected to the T-shaped tube 9. The flow shell 2 is provided with two mirror-distributed cavities, both of which are connected to the T-shaped tube 9. The flow shell 2 is slidably connected to two mirror-distributed filter cottons 10, which are used to further filter impurities in the fish pond water. The two mirror-distributed filter cottons 10 are located in the middle of adjacent cavities. The flow shell 2 is fixedly connected to two mirror-distributed detection tubes 11. The two ends of the detection tubes 11 are respectively sealed and slidably connected to a float 12 and a switching rod 13. The float 12 is located in the flow shell. 2. In adjacent chambers, when the filter cotton 10 is blocked by impurities and cannot filter, the water accumulated above the filter cotton 10 drives the float 12 to move upward along the adjacent detection tube 11. A three-way valve is installed at the intersection of the T-shaped tubes 9, and a position detection device is installed on the three-way valve to detect its open state. The three-way valve is used to allow water in the outer shell 1 to enter the two chambers of the flow shell 2 under different states. The two mirror-distributed switching rods 13 are both in a squeezing fit with the valve stem of the three-way valve. The float 12 moves upward along the adjacent detection tube 11, squeezing the gas in the adjacent detection tube 11, causing the gas to push the adjacent switching rod 13 to squeeze the three-way valve. The valve stem switches the operating state of the three-way valve. The left side of the outer shell 1 is fixedly connected to the inlet pipe that communicates with the filter cartridge 3, which is used to inject water from the fish pond into the filter cartridge 3. The bottom of the two cavities of the flow shell 2 are fixedly connected to and communicated with the return pipe, which is used to return the filtered water to the fish pond. The outer shell 1 is equipped with a backwashing component for backwashing the filter cartridge 3, and the flow shell 2 is equipped with a transfer and cleaning component for cleaning the filter cotton 10. By detecting the blockage status of the filter cotton 10, the two filter cotton 10s can switch operation automatically, and the filter cotton 10 can be replaced without stopping the machine, thus avoiding the waste of a lot of time and the reduction of the filtration efficiency of the water in the fish pond.

[0035] like Figure 2 and Figure 6As shown, the backwash assembly includes a backwash pipe 202, which is fixedly connected to the inside of the housing 1. The bottom end of the backwash pipe 202 is fixedly connected to and connected to a water pump 201, and the other end of the backwash pipe 202 is fixedly connected to and connected to a linear array of backwash heads 203. The water pump 201 draws clean water from the housing 1 and sprays it out to the filter cartridge 3 through the backwash heads 203 to backwash the filter cartridge 3. A drain pipe 204 is fixedly connected to the right side of the housing 1. The drain pipe 204 is fixedly connected to and connected to a collection shell 205. The collection shell 205 is located inside the filter cartridge 3 and directly below the linear array of backwash heads 203, so that the water sprayed out by the backwash heads 203 and penetrating into the filter cartridge 3 carries impurities and falls directly into the collection shell 205 and is discharged along the drain pipe 204.

[0036] like Figure 1 , Figure 4 and Figure 7 As shown, the transfer and cleaning assembly includes two centrally symmetrically distributed first push rods 301. The mirror-distributed first push rods 301 are fixedly connected to the middle of the flow shell 2. The telescopic ends of the two mirror-distributed first push rods 301 are fixedly connected to adjacent filter cotton 10. The flow shell 2 is fixedly connected to mirror-distributed drain pipes 302. The two mirror-distributed drain pipes 302 are respectively connected to adjacent cavities of the flow shell 2. The drain pipes 302 are located above the adjacent filter cotton 10. A solenoid valve is provided on the drain pipe 302 for discharging water accumulated in the cavity of the flow shell 2. Two front and rear mirror-distributed cleaning platforms 303 are fixedly connected to the outside of the flow shell 2. The cleaning platforms 303 are slidably connected to the adjacent filter cotton 10. The bottom of the cleaning platform 303 is fixedly connected to and connected to a sewage outlet pipe 304 for discharging sewage generated from cleaning the filter cotton 10. A cleaning assembly for cleaning all the filter cotton 10 is provided on the outside of the flow shell 2.

[0037] like Figures 7-9As shown, the cleaning assembly includes two second push rods 305 arranged in a front-to-back mirror distribution. Both second push rods 305 are fixedly connected to the side wall of the flow shell 2. A sliding plate 306 is slidably connected to the telescopic end of each second push rod 305. Four fixed plates 307 arranged in a mirror distribution are fixedly connected to the outside of the flow shell 2. Each fixed plate 307 has a groove 308, which is composed of a linear array of W-shaped grooves connected end-to-end. The W-shaped groove is composed of four mirror-distributed oblique grooves and two mirror-distributed transverse grooves. The transverse grooves are located between two adjacent oblique grooves and are connected end-to-end. The groove 308 is slidably connected to the adjacent sliding plate 306, and the sliding plate 306 is slidably connected to a cleaning... Plate 309, cleaning plate 309 contacts and engages with adjacent filter cotton 10. The telescopic end of the second push rod 305 drives the cleaning plate 309 to clean impurities on the adjacent filter cotton 10 through the adjacent sliding plate 306 and the adjacent fixed plate 307. The fixed plate 307 drives the cleaning plate 309 to periodically push the impurities on the adjacent filter cotton 10 through the adjacent sliding groove 308. A linear array of first elastic elements 310 is provided between the sliding plate 306 and the adjacent cleaning plate 309. The first elastic element 310 is a spring, which is used to drive the cleaning plate 309 to apply a certain pressure to the adjacent filter cotton 10. The sliding plate 306 is fixedly connected to a water injection nozzle 311, which is connected to an external water injection device.

[0038] When filtration of the fishpond water is required, the staff injects water from the fishpond into the filter cartridge 3 through the inlet pipe on the left. The water enters the outer casing 1 through the filter cartridge 3, simultaneously filtering impurities into the interior of the filter cartridge 3. Then, the first motor 5 is turned on, and the output shaft of the first motor 5 drives the first turntable 6 on it to rotate, which in turn drives the first turntable 8 to rotate. The first turntable 8 drives the gear 7 to rotate synchronously through the shaft, and the gear 7 drives the filter cartridge 3 to rotate synchronously through the gear ring 4, changing the position of the filtered water in the filter cartridge 3 to prevent impurities from adhering to one side of the inside of the filter cartridge 3. At the same time, the water pump 201 is turned on, and the water pump 201 draws the filtered clean water from the outer casing 1, causing the clean water to flow upward along the backwash pipe 202, and then discharge along the linear array of backwash heads 203. The discharged water impacts the top of the filter cartridge 3. Since the filter cartridge 3 is rotating, the backwash head 203 backwashes the filter cartridge 3 evenly. Since the collection shell 205 is located inside the filter cartridge 3 and below the backwash head 203 in a linear array, the impurities attached to the inside of the filter cartridge 3 fall into the collection shell 205 due to the impact force. Then, the water flow carries the impurities along the collection shell 205 into the drain pipe 204. The impurities are discharged to the outside along the drain pipe 204. At the same time, the clean water inside the outer shell 1 enters the T-shaped pipe 9. At this time, the three-way valve on the T-shaped pipe 9 opens the water outlet end located on the front side. At this time, the clean water enters the cavity located on the front side of the flow shell 2 along the T-shaped pipe 9. After entering the front cavity, the clean water is further filtered by the front filter cotton 10. Then, the water flows back to the fish pond along the return pipe at the bottom.

[0039] After the purified water is filtered by the filter cotton 10, impurities in the water will adhere to the outside of the filter cotton 10, gradually blocking the flow of purified water on the filter cotton 10. At this time, the purified water will gradually accumulate above the filter cotton 10 and will not be able to flow downwards. The water accumulating above the filter cotton 10 will gradually drive the adjacent float 12 upwards. The upward movement of the float 12 will push the gas in the adjacent detection tube 11, causing the gas in the detection tube 11 to push the adjacent switching rod 13. The switching rod 13 will push the valve stem of the three-way valve, causing the three-way valve to switch to the desired position. Water is injected into the rear cavity of the flow shell 2, and then the clean water in the outer shell 1 flows into the rear cavity of the flow shell 2 along the T-shaped pipe 9. At this time, the position detection device on the three-way valve detects the switch to the open state. At this time, the solenoid valve of the drain pipe 302 located on the front side opens to discharge the water accumulated in the front cavity of the flow shell 2. By detecting the blocking status of the filter cotton 10, the two filter cotton 10s can switch to operation automatically. The filter cotton 10 can be replaced without stopping the machine, saving the replacement time of the filter cotton 10 and improving the filtration efficiency of the water in the fish pond.

[0040] After the water accumulated in the front cavity of the flow shell 2 is completely drained, the first push rod 301 on the front side is opened. The telescopic end of the first push rod 301 drives the adjacent filter cotton 10 to slide outward. After the telescopic end of the first push rod 301 drives the adjacent filter cotton 10 to slide completely to the adjacent cleaning table 303, the second push rod 305 on the front side is opened, and the external water injection device is opened at the same time. The water injection device injects cleaning water into the water injection nozzle 311, so that the water injection nozzle 311 impacts and cleans the impurities on the outside of the adjacent filter cotton 10. At the same time, the first push rod 305 on the front side is opened. The telescopic ends of the two push rods 305 drive the sliding plate 306 on them to move forward synchronously. The sliding plate 306 moves forward and slides along the inclined groove of the W-shaped groove on the slide groove 308. At this time, the sliding plate 306 slides downward and drives the cleaning plate 309 at its bottom to move synchronously, so that the cleaning plate 309 contacts the adjacent filter cotton 10. Then the sliding plate 306 continues to slide downward. At this time, the first elastic element 310 of the linear array is compressed, so that the cleaning plate 309 applies a certain pressure to the adjacent filter cotton 10. This continues until the sliding plate 306 slides to the upper W-shaped groove of the slide groove 308. Within the transverse groove of the W-shaped groove, the cleaning plate 309 maintains pressure and pushes away impurities from the adjacent filter cotton 10. This continues until the sliding plate 306 slides to the next inclined groove of the W-shaped groove on the slide trough 308. At this point, the sliding plate 306 moves upward, thus resetting the first elastic element 310 of the linear array. The cleaning plate 309 then separates from the adjacent filter cotton 10, allowing water from the water nozzle 311 to impact and clean the impurities. After the extension end of the first push rod 301 drives the adjacent filter cotton 10 to slide completely to the adjacent cleaning table 303, the... The telescopic end of the push rod 301 drives the adjacent filter cotton 10 to make a short-distance linear reciprocating motion, so as to avoid the cleaning plate 309 from creating a cleaning dead corner when cleaning the adjacent filter cotton 10. This cycle continues until the sliding plate 306 slides to the limit position of the adjacent sliding groove 308. Then the second push rod 305 drives the adjacent sliding plate 306 to reset and slide back to the initial position. After this cycle is repeated five to ten times, the second push rod 305 is closed. At this time, the cleaning of the front filter cotton 10 is completed, and the wastewater that was cleaned is discharged to the outside through the sewage pipe 304 at the bottom of the cleaning table 303.

[0041] After the front side filter cotton 10 is cleaned, the external water injection device is turned off, and the operation of the second push rod 305 is stopped. At this time, the telescopic end of the first push rod 301 stops its linear reciprocating motion and drives the front filter cotton 10 to reset. Then, the solenoid valve in the first push rod 301 and the front drain pipe 302 is closed. When the filter cotton 10 in the rear cavity is also blocked by impurities, the above steps are repeated. This cycle continues to filter the water in the fish pond. When the filtration of the water in the fish pond is stopped, the water in the fish pond is stopped from being injected into the filter cartridge 3. Then, the first motor 5 and the water pump 201 are turned off. When the water in the fish pond needs to be filtered again, the above steps are repeated.

[0042] In this embodiment, the connection between the first turntable 8 and the rotating shaft is a fixed connection, but this is limited to Embodiment 1. In subsequent embodiments, the connection between the first turntable 8 and the rotating shaft is a spline connection, as detailed in the subsequent embodiments.

[0043] Example 2: Based on Example 1, such as Figure 10 As shown, it also includes a limiting component to prevent water splashing from the backwash head 203 of the linear array. The limiting component is set on the backwash head 203 of the linear array. The limiting component includes a fitting shell 401, which is fixedly connected to the backwash head 203 of the linear array. A blocking airbag 402 is fixedly connected inside the fitting shell 401. The backwash head 203 of the linear array is located inside the blocking airbag 402. The blocking airbag 402 is in contact with the filter cartridge 3. It is used to block and limit the water discharged from the backwash head 203, so that it seeps into the filter cartridge 3 for backwashing, and avoids the water discharged from the backwash head 203 splashing to the outside, which would prevent a large amount of water from backwashing the filter cartridge 3. An expansion component is provided on the backwash pipe 202 to adjust the degree of contact between the blocking airbag 402 and the filter cartridge 3.

[0044] like Figure 6 and Figure 10 As shown, the expansion assembly includes two mirror-distributed first connecting pipes 403, which are fixedly connected to and connected to the backflushing pipe 202. The backflushing pipe 202 is fixedly connected to two mirror-distributed first fixed cylinders 404. A piston plate 405 is slidably connected inside the first fixed cylinder 404, which divides the first fixed cylinder 404 into two cavities. The upper cavity is connected to the first connecting pipe 403 and contains water drawn from the outer shell 1 by the water pump 201. A second connecting pipe 406 is fixedly connected between the first fixed cylinder 404 and the sealing airbag 402, and the lower cavity is connected to the second connecting pipe 406. The outer shell 1 is provided with a scraping component for scraping impurities inside the filter cartridge 3. The component can automatically adjust the contact force between the sealing airbag 402 and the filter cartridge 3 according to the degree of sealing of the filter cartridge 3, so as to avoid water leakage in the sealing airbag 402 due to the increase of water pressure inside the sealing airbag 402.

[0045] like Figure 11 and Figure 12As shown, the scraping assembly includes a second motor 501, which is fixedly connected to the left side of the housing 1. The output shaft of the second motor 501 is fixedly connected to a second turntable 502, which is frustum-shaped with the smaller diameter end located on the right side. A rotating component 503 is rotatably connected through the left side of the housing 1. The rotating component 503 is splinedly connected to a second turntable 504 located outside the housing 1. The second turntable 504 is in contact with the second turntable 502. The output shaft of the second motor 501 drives the rotating component 503 to rotate through the second turntable 502 and the second turntable 504. The left side inside the housing 1 is slidably connected to... A sliding frame 505 is slidably connected to a rotating component 503. The rotating component 503 rotates, causing the sliding frame 505 to reciprocate linearly along the outer shell 1. A flexible scraper 506 that fits against the filter cartridge 3 is fixedly connected to the sliding frame 505. The flexible scraper 506 is used to fit against the arc-shaped surface of the filter cartridge 3. An adjustment component for adjusting the rotation speed of the filter cartridge 3 is provided on the backwash pipe 202. The top of the filter cartridge 3 is scraped back and forth by the flexible scraper 506, which removes the impurities attached to the inside of the filter cartridge 3, reduces the blockage of the filter cartridge 3 by impurities, and increases the backwash rate of the external backwash head 203 on the filter cartridge 3.

[0046] like Figure 1 and Figure 13 As shown, the adjusting assembly includes a third connecting pipe 601, which is fixedly connected to and communicates with the backflush pipe 202. A second fixed cylinder 602, which is fixedly connected to the third connecting pipe 601, is fixedly connected to the left side of the outer casing 1. A piston shaft 603 is slidably connected to the second fixed cylinder 602, and the two cooperate to form a sealed cavity. This sealed cavity communicates with the third connecting pipe 601 and contains water drawn from the outer casing 1 by the water pump 201. A pusher frame 604 is fixedly connected to the piston shaft 603. A second elastic element 605, which is a spring, is provided between the piston shaft 603 and the second fixed cylinder 602. The second elastic element 605 is used to drive the adjacent piston shaft 603 to reset. The first turntable 8 and the second turntable 50... All four are rotatably connected to the pusher frame 604. The first turntable 8 is splinedly connected to the rotating shaft. When the filter cartridge 3 is highly blocked, the flow of water in the blocking airbag 402 into the filter cartridge 3 decreases. At this time, the water pressure in the blocking airbag 402 increases, which in turn pushes the piston shaft 603 to slide along the fixed cylinder 602. This causes the piston shaft 603 to drive the pusher frame 604 to slide, thereby reducing the transmission ratio between the first turntable 8 and the first turntable 6 and increasing the transmission ratio between the second turntable 502 and the second turntable 504. This increases the scraping speed of the flexible scraper 506 on the impurities inside the filter cartridge 3, reduces the degree of blockage of the filter cartridge 3 by impurities, and at the same time reduces the rotation speed of the filter cartridge 3. This extends the backwash time of the linear array backwash head 203 on the filter cartridge 3, and improves the backwash effect of the backwash head 203 on the filter cartridge 3.

[0047] When the water pump 201 draws clean water from the outer shell 1 into the backwash pipe 202 and discharges it along the backwash head 203 in a linear array to backwash the filter cartridge 3, some water splashes to the outside after contacting the filter cartridge 3. This results in a large amount of water not being able to backwash the filter cartridge 3, but instead flowing along the outside of the filter cartridge 3 and eventually flowing back into the outer shell 1. This reduces the backwash rate of the backwash head 203 on the filter cartridge 3. When the water is discharged along the backwash head 203 in a linear array, it enters the sealing airbag 402. Since the sealing airbag 402 is in close contact with the filter cartridge 3, it limits the water discharged by the backwash head 203, preventing the water from flowing down the filter cartridge 3 into the outer shell 1. This increases the amount of water used to backwash the filter cartridge 3 and improves the backwash rate of the filter cartridge 3.

[0048] When the filter cartridge 3 begins filtration, the second motor 501 is turned on. The output shaft of the second motor 501 drives the second turntable 502 to rotate, which in turn drives the second turntable 504 to rotate. The second turntable 504 drives the rotating component 503 to rotate synchronously. The rotation of the rotating component 503 causes the sliding frame 505 to slide back and forth along the outer shell 1. The sliding frame 505 drives the flexible scraper 506 to slide back and forth synchronously, so that the flexible scraper 506 scrapes the top of the filter cartridge 3 reciprocally, removing the impurities attached to the inside of the filter cartridge 3, reducing the blockage of the filter cartridge 3 by impurities, and increasing the backwashing rate of the external backwash head 203 on the filter cartridge 3. At this time, the water backwashed from the top of the filter cartridge 3 flows downward, carrying the impurities pushed by the flexible scraper 506 to the collection shell 205 below, and finally discharged to the outside along the drain pipe 204. This continues until the water in the fish pond is stopped from being filtered. At this time, the second motor 501 is turned off. When the water in the fish pond needs to be filtered again, the above steps are repeated.

[0049] When there are too many impurities adhering to the inner wall of the filter cartridge 3, the flow rate of water entering the filter cartridge 3 from the sealing airbag 402 will be reduced. Since the pumping power of the water pump 201 remains unchanged, the water pressure in the sealing airbag 402 will begin to increase, causing the water pressure in the backwash pipe 202 to increase synchronously. At this time, the water in the backwash pipe 202 flows along the third connecting pipe 601 and finally enters the second fixed cylinder 602. Then, the water in the second fixed cylinder 602 pushes the piston shaft 603 to slide to the left, causing the piston shaft 603 to drive the push frame 604 to move to the left. At the same time, the second elastic element 605 is compressed, and the push frame 604 drives the first turntable 8 to slide to the left, changing the position of the first turntable 8 relative to the first rotating disc 8. The contact position of the first turntable 6 reduces the transmission ratio of the first turntable 6 to the first turntable 8, thereby reducing the rotation speed of the gear 7, slowing down the rotation speed of the filter cartridge 3, extending the backwash time of the linear array backwash head 203 on the filter cartridge 3, and improving the backwash effect of the backwash head 203 on the filter cartridge 3. At the same time, the push frame 604 pushes the second turntable 504 to move to the left synchronously, changing the contact position of the second turntable 504 and the second turntable 502, increasing the transmission ratio of the second turntable 502 to the second turntable 504, increasing the rate at which the flexible scraper 506 scrapes away impurities from the top of the inner wall of the filter cartridge 3, reducing the amount of impurities adhering to the inner wall of the filter cartridge 3, and increasing the backwash rate of the backwash head 203 on the filter cartridge 3.

[0050] Simultaneously, as the water pressure inside the sealing airbag 402 begins to increase, the water pressure inside the backflushing pipe 202 also increases synchronously. This causes the water in the backflushing pipe 202 to enter the two first fixed cylinders 404 along the two mirror-distributed first connecting pipes 403. At this time, the water in the first fixed cylinder 404 pushes the adjacent piston plates 405, causing the two piston plates 405 to move downwards. The piston plates 405 push the gas in the first fixed cylinder 404 into the sealing airbag 402 along the adjacent second connecting pipe 406. After the gas enters the sealing airbag 402, it causes the sealing airbag 402 to expand further, increasing the adhesion between the sealing airbag 402 and the filter cartridge 3, thus preventing water leakage from the sealing airbag 402 due to the increased water pressure inside.

[0051] This continues until the impurities attached to the inner wall of the filter cartridge 3 gradually decrease. At this point, the flow rate of the filter cartridge 3 gradually increases, and the water in the sealing airbag 402 begins to seep into the filter cartridge 3. The water between the sealing airbag 402 and the filter cartridge 3 begins to gradually decrease. At this time, the water pressure in the backwash pipe 202 gradually decreases, causing the two mirror-distributed piston plates 405 to reset. At this time, the volume of gas in the sealing airbag 402 returns to its initial state. Simultaneously, the second elastic element 605 resets and drives the adjacent piston shaft 603 to reset. The piston shaft 603 drives the first rotating disk 8 and the second rotating disk 504 to reset through the push frame 604. When the impurities inside the filter cartridge 3 increase again, the above steps are repeated.

[0052] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A fish pond rotary drum filter with an automatic filter cotton cleaning structure, comprising a housing (1), a flow shell (2) fixedly connected to the housing (1), a filter cylinder (3) rotatably connected to the housing (1), a toothed ring (4) fixedly connected to one side of the filter cylinder (3), and a first motor (5) fixedly connected to the side of the housing (1) near the toothed ring (4), characterized in that, It also includes a first turntable (6), which is fixedly connected to the output shaft of the first motor (5). A rotating shaft is rotatably connected through the outer shell (1) near the gear ring (4). A gear (7) meshing with the gear ring (4) is fixedly connected to the rotating shaft. A first turntable (8) is provided on the rotating shaft. The first turntable (8) fits against the first turntable (6). A T-shaped tube (9) is fixedly connected and communicates with the outer shell (1). A mirror-distributed cavity is provided inside the flow shell (2). The mirror-distributed cavity is communicated with the T-shaped tube (9). A mirror-distributed filter cotton (10) is slidably connected to the flow shell (2). The filter cotton (10) distributed in a mirror image is located in adjacent cavities. The flow shell (2) is fixedly connected to the detection tube (11) distributed in a mirror image. The two ends of the detection tube (11) are respectively sealed and slidably connected to the float (12) and the switching rod (13). The float (12) is located in adjacent cavities of the flow shell (2). A three-way valve is provided on the T-shaped tube (9). The switching rod (13) distributed in a mirror image is squeezed and cooperated with the valve stem of the three-way valve. A backflushing assembly for backflushing the filter cartridge (3) is provided in the outer shell (1). A transfer cleaning assembly for cleaning the filter cotton (10) is provided in the flow shell (2). The backwash assembly includes a backwash pipe (202), which is fixedly connected to the inside of the outer shell (1). One end of the backwash pipe (202) is fixedly connected to and connected to a water pump (201), and the other end of the backwash pipe (202) is fixedly connected to and connected to a linear array of backwash heads (203). The outer shell (1) is fixedly connected to a drain pipe (204), which is fixedly connected to and connected to a collection shell (205). The collection shell (205) is located inside the filter cartridge (3). The transfer and cleaning assembly includes a centrally symmetrically distributed first push rod (301), and mirror-distributed first push rods (301) are fixedly connected to the inside of the flow shell (2). The telescopic ends of the mirror-distributed first push rods (301) are fixedly connected to the adjacent filter cotton (10). The flow shell (2) is fixedly connected to a mirror-distributed drain pipe (302), and the mirror-distributed drain pipe (302) is connected to the adjacent cavity of the flow shell (2). The drain pipe (302) is located above the adjacent filter cotton (10). The outside of the flow shell (2) is fixedly connected to a mirror-distributed cleaning platform (303), and the cleaning platform (303) is slidably connected to the adjacent filter cotton (10). The bottom of the cleaning platform (303) is fixedly connected to and connected to a sewage outlet pipe (304). The outside of the flow shell (2) is provided with a cleaning assembly for cleaning all the filter cotton (10). The cleaning assembly includes a mirror-distributed second push rod (305), which is fixedly connected to the side wall of the flow shell (2). The telescopic end of the second push rod (305) is slidably connected to a sliding plate (306). A mirror-distributed fixed plate (307) is fixedly connected to the outside of the flow shell (2). A groove (308) is provided on the fixed plate (307). The groove (308) is slidably connected to the adjacent sliding plate (306). A cleaning plate (309) is slidably connected to the sliding plate (306). The cleaning plate (309) is in contact with the adjacent filter cotton (10). A linear array of first elastic elements (310) is provided between the sliding plate (306) and the adjacent cleaning plate (309). A water injection nozzle (311) is fixedly connected to the sliding plate (306). The chute (308) is composed of a W-shaped chute in a linear array connected end to end. The W-shaped chute is composed of four oblique chutes and two transverse chutes in a mirror distribution. The transverse chute is located between two adjacent oblique chutes and is connected end to end. It also includes a limiting component for preventing water splashing from the back jets (203) of the linear array. The limiting component is disposed on the back jets (203) of the linear array. The limiting component includes a fitting shell (401). The fitting shell (401) is fixedly connected to the back jets (203) of the linear array. A blocking airbag (402) is fixedly connected inside the fitting shell (401). The back jets (203) of the linear array are all located inside the blocking airbag (402). The blocking airbag (402) is fitted with the filter cartridge (3). An expansion component is provided on the back jet pipe (202) for adjusting the degree of fit between the blocking airbag (402) and the filter cartridge (3).

2. A fish pond rotary drum filter with an automatic filter cotton cleaning structure according to claim 1, characterized in that, The expansion assembly includes a first connecting pipe (403) with a mirror distribution. The first connecting pipe (403) is fixedly connected to and communicates with the backflushing pipe (202). The backflushing pipe (202) is fixedly connected to a first fixed cylinder (404) with a mirror distribution. A piston plate (405) is slidably connected inside the first fixed cylinder (404). The first fixed cylinder (404) is fixedly connected to and communicates with the sealing airbag (402) via a second connecting pipe (406). The outer shell (1) is provided with a scraping assembly for scraping impurities inside the filter cartridge (3).

3. A fish pond rotary drum filter with an automatic filter cotton cleaning structure according to claim 2, characterized in that, The scraping assembly includes a second motor (501), which is fixedly connected to the side of the housing (1) near the first motor (5). The output shaft of the second motor (501) is fixedly connected to a second turntable (502). A rotating component (503) is rotatably connected through the side of the housing (1) near the first motor (5). The rotating component (503) is splinedly connected to a second turntable (504) located outside the housing (1). The second turntable (504) is in contact with the second turntable (502). A sliding frame (505) is slidably connected inside the housing (1) near the rotating component (503). The sliding frame (505) is slidably connected to the rotating component (503). A flexible scraper (506) that is in contact with the filter cartridge (3) is fixedly connected to the sliding frame (505). An adjustment assembly for adjusting the rotation speed of the filter cartridge (3) is provided on the backwash pipe (202).

4. A fish pond rotary drum filter with an automatic filter cotton cleaning structure according to claim 3, characterized in that, The adjustment assembly includes a third connecting pipe (601), which is fixedly connected to and communicates with the backflush pipe (202). The outer shell (1) is fixedly connected to a second fixed cylinder (602) which is fixedly connected to the third connecting pipe (601). The second fixed cylinder (602) is slidably connected to a piston shaft (603), and the two cooperate to form a sealed cavity. The sealed cavity communicates with the third connecting pipe (601). The piston shaft (603) is fixedly connected to a pusher frame (604). A second elastic element (605) is provided between the piston shaft (603) and the second fixed cylinder (602). The first turntable (8) and the second turntable (504) are rotatably connected to the pusher frame (604). The first turntable (8) is splinedly connected to the rotating shaft.

5. A fish pond rotary drum filter with an automatic filter cotton cleaning structure according to claim 4, characterized in that, Both the first turntable (8) and the second turntable (504) are frustum-shaped and are arranged in opposite directions.

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