A fish pond rotary drum filter with an anti-blocking sewage discharge structure

Abstract

The present invention relates to the technical field of drum filters, and particularly to a fish pond drum filter with an anti-blocking sewage discharge structure, which includes a housing. A U-shaped plate and a partition plate are installed inside the housing. A liquid inlet pipe is embedded in the housing. A first rotating plate and a second rotating plate are rotatably arranged on the liquid inlet pipe. A fixed column that penetrates and is rotatably connected to the U-shaped plate is fixedly connected to the second rotating plate. A plurality of rectangular frames are circumferentially and equidistantly distributed between the first rotating plate and the second rotating plate. A filter screen is arranged inside the rectangular frames. A double-shaft motor is fixedly connected to the U-shaped plate. The fixed column and the adjacent output shaft on the double-shaft motor are driven by a bevel gear set. A diversion pipe is embedded in the housing. A diversion plate is slidably arranged on the diversion pipe. The housing is provided with a backwashing mechanism. The present invention uses the diversion plate to collect the impurities intercepted by the filter screens on all the rectangular frames, thereby increasing the continuous filtration duration of the filter screens on all the rectangular frames.

Description

Technical Field

[0001] The present invention relates to the technical field of drum filters, and particularly to a fish pond drum filter with an anti-blocking sewage discharge structure. Background Art

[0002] A fish pond drum filter is a physical filtration device used in a fish pond circulation system, mainly used to remove solid wastes in water, such as fish feces, residual food and other impurities, so as to keep the water quality clean. However, during the operation of the existing drum filter, due to the design of the cylindrical filter screen in the drum filter and the problem of water flow characteristics, impurities suspend and float in the water source of the drum filter, resulting in that the impurities in the water entering the drum filter are not easily directly attached to the filter screen. This causes the impurities to accumulate inside the filter, and when the impurities accumulate to a certain extent, the amount of impurities attached to the filter screen per unit time increases, causing the filter screen to become blocked. After the filter screen is blocked, the net water discharge of the fish pond drum filter will become smaller, affecting the continuous filtration effect of the water in the fish pond. In addition, the blockage of the filter screen will also cause the water source to completely soak the filter screen, affecting the subsequent discharge of the impurities intercepted by the filter screen and further weakening the filtration effect.

[0003] Therefore, in view of this situation, it is necessary to develop a fish pond drum filter with an anti-blocking sewage discharge structure to meet the actual use requirements. Summary of the Invention

[0004] In order to overcome the problems raised in the above background, the present invention provides a fish pond drum filter with an anti-blocking sewage discharge structure.

[0005] The technical solution of the present invention is as follows: A fish pond drum filter with an anti-blocking sewage discharge structure includes a housing, a rectangular plate is installed on the housing, a U-shaped plate and a partition plate are installed inside the housing, a liquid inlet pipe is embedded in the side wall of the housing opposite to the U-shaped plate, a first rotating plate and a second rotating plate are rotatably arranged on the liquid inlet pipe, a fixing column that penetrates the U-shaped plate and is rotatably connected thereto is fixedly connected to the second rotating plate, a rectangular frame is circumferentially and equidistantly distributed between the first rotating plate and the second rotating plate, a filter screen is arranged inside the rectangular frame, a double-shaft motor is fixedly connected to the U-shaped plate, and the fixing column and the adjacent output shaft on the double-shaft motor are driven by a bevel gear set. A water purification unit is installed between the partition plate and the housing, a round hole communicating with the water purification unit is arranged on the partition plate, a diversion pipe is embedded in the housing, the diversion pipe is rotatably connected to the first rotating plate, and the liquid inlet pipe penetrates the diversion pipe. A diversion plate is slidably arranged in the diversion pipe, the diversion plate is located between the first rotating plate and the second rotating plate, and an anti-flushing mechanism for cleaning the filter screens on all the rectangular frames is arranged on the housing.

[0006] Preferably, the liquid inlet pipe is fixedly connected with symmetric inclined plates, the inclined plates are provided with through holes evenly distributed thereon, and the through holes on the inclined plates are communicated with the liquid inlet pipe.

[0007] Preferably, all the rectangular frames are connected end to end to form a star shape, and all the rectangular frames are used for fishing out suspended impurities in the liquid.

[0008] Preferably, the backwashing mechanism includes a first fixing plate, the first fixing plate is arranged on the housing, the first fixing plate is located above the rectangular frame, the first fixing plate is provided with a liquid guiding cavity, the first fixing plate is fixedly connected with a liquid guiding pipe communicated with the liquid guiding cavity thereon, the liquid guiding pipe penetrates through the U-shaped plate and is fixedly connected with it, the first fixing plate is fixedly connected with evenly distributed spray heads, the spray heads are communicated with the liquid guiding cavity of the first fixing plate, and a pump body is installed at one end of the liquid guiding pipe close to the housing.

[0009] Preferably, a reciprocating mechanism for controlling the movement of the first fixing plate is further included, the reciprocating mechanism is arranged on the U-shaped plate, the first fixing plate is slidably connected with the housing, the reciprocating mechanism includes a support plate, the support plate is fixedly connected to the inner wall of the U-shaped plate, a rotating shaft is rotatably arranged on the support plate, an elliptical frame is fixedly connected to the rotating shaft, a first sliding frame is slidably arranged on the U-shaped plate, the elliptical frame is provided with a guiding groove slidably connected with the first sliding frame, the first sliding frame is fixedly connected with the first fixing plate, and a detection component for detecting the liquid volume in the housing is arranged on the housing.

[0010] Preferably, the detection component includes a swinging frame, the swinging frame is rotatably arranged outside the housing, a sliding groove is arranged on the side wall of the housing, a floating ball is slidably arranged at the sliding groove of the housing, the floating ball is located between the housing and the U-shaped plate, the floating ball is slidably connected with the swinging frame, a first fixed shell is fixedly connected to the inner wall of the U-shaped plate, a second sliding frame is slidably arranged in the first fixed shell, a spring is installed between the second sliding frame and the first fixed shell, the second sliding frame penetrates through the housing and is slidably connected with it, the swinging frame is provided with a sliding groove slidably connected with the second sliding frame, a third telescopic rod is fixedly connected to the inner wall of the U-shaped plate, a pipeline is communicated between the cavity of the third telescopic rod and the first fixed shell, a second fixing plate is fixedly connected to the telescopic end of the third telescopic rod, a first locking block is rotatably arranged on the second fixing plate, the first locking block is in limit sliding with the corresponding output shaft on the double-shaft motor, a second locking block is fixedly connected to the rotating shaft, the second locking block and the first locking block are in limit cooperation, and an adjusting component for adjusting the flow cross-section of all the spray heads is arranged on the first fixing plate.

[0011] Preferably, the adjusting member includes a first conduit embedded in the first fixing plate. The first conduit penetrates through the U-shaped plate and is fixedly connected and communicated with the first fixed shell. The first fixing plate is embedded with two fourth telescopic rods. The chambers of the two fourth telescopic rods are fixedly connected and communicated with the first conduit. The telescopic ends of the two fourth telescopic rods are fixedly connected with a third sliding frame. The third sliding frame penetrates through the adjacent nozzle and is slidably connected thereto. The third sliding frame is used to adjust the flow cross-section in the corresponding nozzle.

[0012] Preferably, it further includes an expanding mechanism for adjusting the swing of all the rectangular frames. The expanding mechanism is arranged on the liquid guiding pipe. The expanding mechanism includes a second fixed shell fixedly connected and communicated with the side wall of the liquid guiding pipe, and the second fixed shell is located inside the U-shaped plate. A sliding plate is slidably arranged in the second fixed shell. A spring is installed between the sliding plate and the second fixed shell. The second fixed shell is fixedly connected and communicated with a second conduit. The second conduit is rotatably connected with the fixed column. The fixed column is provided with a chamber, and the chamber of the fixed column is communicated with the second conduit. The first rotating plate is fixedly connected with first telescopic rods circumferentially and equidistantly distributed. The fixed column is fixedly connected with second telescopic rods circumferentially and equidistantly distributed. The telescopic ends of the second telescopic rods penetrate through the second rotating plate and are slidably connected thereto. The first telescopic rods penetrate through the first rotating plate and are slidably connected thereto. The telescopic ends of the first telescopic rods and the corresponding telescopic ends of the second telescopic rods are rotatably connected with the adjacent rectangular frames. Adjacent two rectangular frames are hinged. The chamber of the second telescopic rod is communicated with the chamber of the fixed column. A limiting component for limiting the sliding plate is arranged on the liquid guiding pipe.

[0013] Preferably, a sliding column is slidably arranged on the side wall of the second fixed shell. A spring is installed between the sliding column and the second fixed shell. One side of the sliding column close to the sliding plate is hemispherical. The sliding plate is provided with a blind hole, and the hemispherical end of the sliding column is in limit fit with the blind hole of the sliding plate.

[0014] Preferably, the limiting component includes a third conduit fixedly connected and communicated with the side wall of the liquid guiding pipe. The third conduit is fixedly connected and communicated with the second fixed shell. A sliding block is slidably arranged in the third conduit. A tension spring is installed between the sliding block and the third conduit. The sliding block is provided with an inclined surface, and the inclined surface of the sliding block is in pressing fit with the sliding plate, and the sliding block is used to limit the sliding plate.

[0015] The beneficial effects produced by the above technical solutions are as follows: The present invention uses a diversion plate to collect the impurities intercepted by the filters on all rectangular frames, improving the continuous filtration duration of the filters on all rectangular frames. Through the operation of the pump body, the nozzle is controlled to spray water to backwash the filters on the rectangular frames, further extending the continuous filtration duration of the filters on the rectangular frames. The rotation of the elliptical frame is used to control the first fixing plate to drive all the nozzles to move reciprocally, improving the backwashing effect of the nozzles on the filters on the rectangular frames. The detection of the water volume in the shell by the float ball is used to control the movement of the third sliding frame at the same time, adjusting the flow cross-section of the nozzles, changing the impact force of the water source sprayed by the nozzles on the filters on the rectangular frames, accelerating the shedding of the impurities intercepted by the filters on the rectangular frames. The movement of the sliding plate is used to change the shape formed by all the rectangular frames and reduce the distance between the filters on the rectangular frames and the nozzles, assisting the cleaning effect of the water source sprayed by the nozzles on the filters on the rectangular frames in sequence, and further extending the effective filtration duration of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 is a three-dimensional structural diagram of the components inside the shell of the present invention;

[0018] Figure 3 is a cross-sectional view of the components at the U-shaped plate and the partition plate of the present invention;

[0019] Figure 4 is a structural diagram of the components at the second rotating plate and the rectangular frame of the present invention;

[0020] Figure 5 is a three-dimensional structural diagram of the backwashing mechanism of the present invention;

[0021] Figure 6 is a three-dimensional structural diagram of the reciprocating mechanism of the present invention;

[0022] Figure 7 is a cross-sectional view of the detection component of the present invention;

[0023] Figure 8 is a cross-sectional view of the adjusting component of the present invention;

[0024] Figure 9 is a cross-sectional view of the expansion mechanism of the present invention;

[0025] Figure 10 is a cross-sectional view of the limiting component of the present invention.

[0026] Meanings of the reference numerals in the figures: 1. Housing, 11. Rectangular plate, 12. U-shaped plate, 13. Partition plate, 14. Liquid inlet pipe, 141. Inclined plate, 15. First rotating plate, 151. First telescopic rod, 16. Second rotating plate, 17. Fixed column, 171. Second telescopic rod, 18. Rectangular frame, 19. Biaxial motor, 191. Water purification unit, 192. Diversion pipe, 193. Diversion plate, 2. First fixing plate, 21. Liquid guide pipe, 22. Sprayer, 23. Pump body, 3. Support plate, 31. Rotating shaft, 32. Elliptical frame, 33. First sliding frame, 4. Swing frame, 41. Floating ball, 42. First fixed housing, 43. Second sliding frame, 44. Third telescopic rod, 45. Second fixing plate, 46. First locking block, 47. Second locking block, 5. First conduit, 51. Fourth telescopic rod, 52. Third sliding frame, 6. Second fixed housing, 61. Sliding plate, 62. Second conduit, 7. Sliding column, 8. Third conduit, 81. Sliding block. Detailed implementation manners

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0028] Embodiment 1: A fishpond drum filter with an anti-blocking sewage discharge structure, as Figures 1 - 4As shown in the figure, it includes a housing 1, on which a control terminal is installed. A rectangular plate 11 is installed on the upper surface of the housing 1. A U-shaped plate 12 and a partition plate 13 are installed inside the housing 1. The U-shaped plate 12 is located on the right side of the partition plate 13. A liquid inlet pipe 14 is embedded in the right part of the housing 1. The left end of the liquid inlet pipe 14 is connected to an existing water pump through a pipeline. The water pump is electrically connected to the control terminal. A first rotating plate 15 and a second rotating plate 16 are rotatably arranged on the left part of the liquid inlet pipe 14. The second rotating plate 16 is located on the left side of the first rotating plate 15. The first rotating plate 15 is rotatably connected to the housing 1. A fixing column 17 is fixedly connected to the left side surface of the second rotating plate 16. The fixing column 17 penetrates through the U-shaped plate 12 and is rotatably connected to it. Twelve rectangular frames 18 are circumferentially and equidistantly distributed between the first rotating plate 15 and the second rotating plate 16. The number and size of the rectangular frames 18 can be specifically designed according to the actual needs of customers. A filter screen is arranged inside the rectangular frame 18. A double-shaft motor 19 electrically connected to the control terminal is fixedly connected to the inner wall of the U-shaped plate 12. The left end of the fixing column 17 is driven by a bevel gear set with the lower output shaft of the double-shaft motor 19. A water purification unit 191 is installed between the left side surface of the partition plate 13 and the housing 1. The partition plate 13 is provided with a round hole communicating with the water purification unit 191. A drain port is arranged at the left end of the water purification unit 191. A diversion pipe 192 is embedded in the right part of the housing 1. The diversion pipe 192 is located at the center of the first rotating plate 15 and is rotatably connected to it. And the liquid inlet pipe 14 is embedded in the diversion pipe 192. A diversion plate 193 is slidably arranged at the left end of the diversion pipe 192. The diversion plate 193 is made of foam plastic material, and the left side of the diversion plate 193 is higher than its right side. The diversion plate 193 is located between the first rotating plate 15 and the second rotating plate 16. A backwashing mechanism for cleaning the filter screens on all the rectangular frames 18 is arranged on the housing 1. The diversion plate 193 is used to collect the impurities attached to the filter screens on the rectangular frames 18, reducing the amount of suspended impurities in all the rectangular frames 18, so as to extend the continuous filtration time of the filter screens on all the rectangular frames 18.

[0029] As Figure 3 and Figure 4 shown in the figure, two inclined plates 141 symmetrically arranged front and back are fixedly connected to the liquid inlet pipe 14. The two inclined plates 141 gradually incline downward from the opposite side to the back side. The inclined plates 141 are provided with uniformly distributed through holes. The through holes on the inclined plates 141 are communicated with the liquid inlet pipe 14. All the rectangular frames 18 are connected end to end to form a star shape. The inclined plates 141 are used to guide the water flow, so that the water flow guides the impurities to adhere to the filter screens on the rectangular frames 18. At the same time, in cooperation with the shape formed by the twelve rectangular frames 18, the impurities in the water are fished up, accelerating the cleaning of the impurities in the water in all the rectangular frames 18.

[0030] As Figure 3 and Figure 5As shown in the figure, the recoil mechanism includes a first fixing plate 2, which is arranged at the right part of the housing 1. The first fixing plate 2 is located above the rectangular frame 18. A liquid guide cavity is arranged in the middle of the first fixing plate 2. A liquid guide pipe 21 communicating with the liquid guide cavity above it is fixedly connected to the left part of the first fixing plate 2. The liquid guide pipe 21 penetrates through the U-shaped plate 12 and is fixedly connected to it. The right part of the liquid guide pipe 21 is made of a flexible material. Two groups of uniformly distributed nozzles 22 are fixedly connected to the lower part of the first fixing plate 2. The extension lines of the outlets of two adjacent nozzles 22 in the front and back form an acute angle. The nozzles 22 communicate with the liquid guide cavity of the first fixing plate 2. A pump body 23 electrically connected to the control terminal is installed at the lower end of the liquid guide pipe 21. The liquid is sprayed by multiple nozzles 22 to flush the filters on all the rectangular frames 18 in turn, further extending the continuous filtration time of this device.

[0031] When using this device to filter the water source in the fish pond, the operator connects the liquid inlet pipe 14 to the water pump through a pipeline and connects the water purification unit 191 to the pipeline. At the same time, an impurity collection box is placed below the diversion pipe 192. Then, the pipelines connected to the liquid inlet pipe 14 and the pipelines connected to the water purification unit 191 are placed into the fish pond to complete the preliminary preparation of this device.

[0032] After the preparation operation of this device is completed, the operator starts the water pump connected to the liquid inlet pipe 14 through the control terminal. The water pump works to pump the water in the pool into the liquid inlet pipe 14. Then, the water is sprayed into the housing 1 through multiple through holes on two inclined plates 141. The inclined plates 141 face the corresponding rectangular frames 18, which is convenient for the impurities in the pool water sprayed from the inclined plates 141 to adhere to the filters on the corresponding rectangular frames 18. Subsequently, the pool water flows through the filters on the rectangular frames 18 to the space between the U-shaped plate 12 and the partition plate 13. At this time, the filters on the rectangular frames 18 filter the impurities in the pool water. After that, the pool water between the U-shaped plate 12 and the partition plate 13 is discharged back into the pool through the water purification unit 191 and the connected pipelines, completing the continuous purification of the water source in the fish pond. During the above water source filtration process, the diversion plate 193 always floats on the water surface.

[0033] During the process of purifying the pool water, the control terminal intermittently controls the operation of the double-shaft motor 19 and the pump body 23 at the same time. The operation of the double-shaft motor 19 drives the fixed column 17, the second rotating plate 16, all the rectangular frames 18 and the first rotating plate 15 to rotate through the bevel gear set. The rotation of all the rectangular frames 18 changes their areas in the water, ensuring that all the rectangular frames 18 alternately filter the impurities in the pool water, improving the continuous filtration time of this device. At the same time, along with the further purification of the pool water by the water purification unit 191, the cleanliness of the water source in the fish pond is maintained.

[0034] During the above-mentioned process of filtering the pool water, due to the hexagonal star shape formed by all the rectangular frames 18, when all the rectangular frames 18 rotate, the filter screens on the rectangular frames 18 simultaneously perform a scooping action on the impurities in the pool water, scooping out the impurities in the pool water above the water surface in the housing 1. Subsequently, when the rectangular frame 18 that has scooped up the impurities rotates above the deflector 193, the pump body 23 operates to pump the water source in the housing 1 into the liquid guide pipe 21. Then, water is sprayed out from the multiple nozzles 22 to wash the rectangular frame 18 between the first fixing plate 2 and the deflector 193, flushing the impurities scooped up by the filter screen on this rectangular frame 18 onto the deflector 193. Subsequently, the impurities and part of the water source flow through the guide pipe 192 into the existing impurity collection box, reducing the accumulation amount of impurities in all the rectangular frames 18.

[0035] After the pump body 23 and the double-shaft motor 19 have worked for a period of time, the control terminal shuts down the pump body 23 and the double-shaft motor 19, and all the rectangular frames 18 stop rotating. At the same time, all the nozzles 22 stop flushing the filter screens on the corresponding rectangular frames 18. During this process, both the working frequency of the double-shaft motor 19 and the working frequency of the pump body 23 can be adjusted and set correspondingly on the control terminal. At the same time, after the water purification unit 191 has worked for a period of time, the operator regularly replaces the water purification unit 191. When the fish pond stops being used or there is no need to perform the pool water circulation filtration operation, the operator can shut down the water pump connected to the liquid inlet pipe 14 through the control terminal.

[0036] Embodiment 2: On the basis of Embodiment 1, as Figure 6 and Figure 7 shown, it further includes a reciprocating mechanism for controlling the movement of the first fixing plate 2. The reciprocating mechanism is arranged on the U-shaped plate 12. A slide rail is provided on the right part of the housing 1, and the first fixing plate 2 is located at the slide rail of the housing 1 and slides. The reciprocating mechanism includes a support plate 3, the support plate 3 is fixedly connected to the inner wall of the U-shaped plate 12, a rotating shaft 31 is rotatably arranged on the left part of the support plate 3, an elliptical frame 32 is fixedly connected to the upper end of the rotating shaft 31, a first sliding frame 33 is slidably arranged on the right part of the U-shaped plate 12, an elliptical guide groove is arranged on the upper part of the elliptical frame 32, the first sliding frame 33 is fixedly connected to the first fixing plate 2, and the first sliding frame 33 slides in the guide groove of the elliptical frame 32. A detection component for detecting the liquid volume in it is arranged on the housing 1. By using the reciprocating movement of the first fixing plate 2, the nozzles 22 are controlled to spray water reciprocally, changing the impacted part of the filter screen on the rectangular frame 18 and accelerating the shedding of the impurities attached to the filter screen on the rectangular frame 18.

[0037] As Figure 2 、 Figure 6 and Figure 7As shown in the figure, the detection component includes a swing frame 4. The swing frame 4 is rotatably arranged at the front part of the housing 1. There are two vertically arranged chutes at the front part of the housing 1. A float ball 41 which is slidably connected to the swing frame 4 is slidably arranged at the chute on the right side of the housing 1. A baffle for blocking the adjacent chute on the housing 1 is arranged on the float ball 41. The float ball 41 is located between the housing 1 and the U-shaped plate 12. A first fixed shell 42 is fixedly connected to the inner wall of the U-shaped plate 12. A second sliding frame 43 is slidably arranged at the upper part of the first fixed shell 42. A spring is installed between the lower surface of the second sliding frame 43 and the inner bottom surface of the first fixed shell 42. The upper part of the second sliding frame 43 slides in the adjacent chute on the housing 1. A chute which is slidably connected to the second sliding frame 43 is arranged at the left part of the swing frame 4. A third telescopic rod 44 is fixedly connected to the inner wall of the U-shaped plate 12. The cavity of the third telescopic rod 44 is communicated with the first fixed shell 42 through a pipeline. A second fixed plate 45 is fixedly connected to the telescopic end of the third telescopic rod 44. A first locking block 46 is rotatably arranged at the rear part of the second fixed plate 45. The upper output shaft of the double-shaft motor 19 is a spline shaft. The first locking block 46 is slidably limited on the spline shaft at the upper side of the double-shaft motor 19. A second locking block 47 is fixedly connected to the lower end of the rotating shaft 31. The second locking block 47 and the first locking block 46 are in limit cooperation. An adjusting component for adjusting the flow cross-section on all the nozzles 22 is arranged on the first fixed plate 2. When the amount of impurities attached to the filters on all the rectangular frames 18 increases, the amount of water in the housing 1 decreases. At this time, the float ball 41 moves to adjust the flow cross-section of the nozzles 22 through the connected components, and strengthens the cleaning force of the water sprayed by the nozzles 22 on the filters on the rectangular frames 18.

[0038] As Figure 6 and Figure 8 shown in the figure, the adjusting component includes a first conduit 5. The first conduit 5 is embedded in the first fixed plate 2. The left part of the first conduit 5 penetrates through the U-shaped plate 12 and is fixedly connected and communicated with the lower part of the first fixed shell 42. Two symmetrically arranged fourth telescopic rods 51 are embedded at the lower part of the first fixed plate 2 in the front and back directions. The chambers of the two fourth telescopic rods 51 are fixedly connected and communicated with the right side of the first conduit 5. The telescopic ends of the two fourth telescopic rods 51 are both fixedly connected with a third sliding frame 52. The third sliding frame 52 penetrates through the adjacent nozzle 22 and is slidably connected with it. The third sliding frame 52 is used to adjust the flow cross-section in the corresponding nozzle 22. While detecting the amount of water in the housing 1 by using the float ball 41, the flow cross-section of the nozzles 22 is adjusted at the same time, and the backwashing cleaning force of the nozzles 22 on the filters on the corresponding rectangular frames 18 is improved.

[0039] When the operator is away for a long time and unable to take care of the fishpond, the operator starts the water pump connected to the liquid inlet pipe 14 through the control terminal and sets the operating frequencies of the double-shaft motor 19 and the pump body 23. The water pump operates to continuously circulate and filter the pond water. At the same time, the water accumulated in the housing 1 will lift the floating ball 41 upward. The upward movement of the floating ball 41 drives the swing frame 4 to swing. The swing of the swing frame 4 squeezes the second sliding frame 43 to move downward through the upper chute on it. The downward movement of the second sliding frame 43 compresses the connected spring. The movement of the second sliding frame 43 pumps the gas in the upper chamber of the third telescopic rod 44 and the gas in the upper chambers of the two fourth telescopic rods 51 into the first fixed shell 42 through the corresponding pipes and the first conduit 5 respectively. The reduction of the gas volume in the chamber of the third telescopic rod 44 causes its telescopic end to drive the second fixed plate 45 and the first locking block 46 to move downward. The downward movement of the first locking block 46 releases the cooperation with the second locking block 47. The reduction of the gas volume in the upper chambers of the two fourth telescopic rods 51 causes their telescopic ends to drive the adjacent third sliding frames 52 to move respectively. The movement of the third sliding frames 52 makes the flow cross-section in the corresponding nozzles 22 larger. During the operation of the double-shaft motor 19 and the pump body 23, the above-mentioned backwashing and cleaning of the filter screen on the corresponding rectangular frame 18 will be repeated.

[0040] During the backwashing and cleaning process, when the amount of impurities attached to the filter screens on all the rectangular frames 18 increases, the amount of water passing through the filter screens on the rectangular frames 18 decreases. However, the water purification unit 191 continuously drains water, reducing the amount of water in the housing 1 of the fishpond. Subsequently, under the elastic force of the spring connected to the second sliding frame 43, the second sliding frame 43, the swing frame 4, and the floating ball 41 repeat the above opposite operations. At the same time, the reverse movement of the second sliding frame 43 resets and pushes the gas in the first fixed shell 42 back into the chambers of the third telescopic rod 44 and the two fourth telescopic rods 51. The telescopic end of the third telescopic rod 44 makes the first locking block 46 cooperate with the second locking block 47 through the second fixed plate 45. Then, when the double-shaft motor 19 operates, it drives the elliptical frame 32 to rotate through the first locking block 46, the second locking block 47, and the rotating shaft 31. The rotation of the elliptical frame 32 causes the guide groove on it to squeeze the first sliding frame 33 to move reciprocally. The reciprocating movement of the first sliding frame 33 drives the connected parts such as the first fixed plate 2 to move reciprocally together, causing the multiple nozzles 22 to spray water in a reciprocating swinging manner to wash the filter screens of the corresponding rectangular frames 18. The reverse movement and reset of the telescopic ends of the two fourth telescopic rods 51 will cause the two third sliding frames 52 to move reversely and reset. The movement of the third sliding frames 52 makes the flow cross-section of the corresponding nozzles 22 smaller, thereby increasing the impact force of the water sprayed by the multiple nozzles 22 and enhancing the backwashing force of the nozzles 22 on the filter screens of the corresponding rectangular frames 18, improving the cleaning effect.

[0041] After the operation of the biaxial motor 19 and the pump body 23 is completed, the backwashing operation is stopped. When the filter screen on the rectangular frame 18 is backwashed and dredged, the water volume in the inner pool of the housing 1 is restored, and the floating ball 41 moves in the reverse direction and resets repeatedly, so that the first locking block 46 is disengaged from the second locking block 47 again, and at the same time, the flow cross-section in the corresponding nozzle 22 becomes larger.

[0042] Embodiment 3: On the basis of Embodiment 2, as Figure 4 , Figure 6 , Figure 9 and Figure 10 shown, it further includes an expansion mechanism for adjusting the swing of all the rectangular frames 18. The expansion mechanism is arranged on the liquid guide pipe 21. The expansion mechanism includes a second fixed housing 6. The second fixed housing 6 is fixedly connected and communicated with the side wall of the liquid guide pipe 21, and the second fixed housing 6 is located inside the U-shaped plate 12. A sliding plate 61 is slidably arranged in the second fixed housing 6. A spring is installed between the rear surface of the sliding plate 61 and the second fixed housing 6. The rear part of the second fixed housing 6 is fixedly connected and communicated with a second conduit 62 rotatably connected to the fixed column 17. The fixed column 17 is provided with a chamber, and the chamber of the fixed column 17 is communicated with the second conduit 62. The first rotating plate 15 is fixedly connected with six first telescopic rods 151 circumferentially and equidistantly distributed. The fixed column 17 is fixedly connected with six second telescopic rods 171 circumferentially and equidistantly distributed. Both the first rotating plate 15 and the second rotating plate 16 are provided with circumferentially and equidistantly distributed sliding grooves. The telescopic ends of the second telescopic rods 171 slide in the adjacent sliding grooves on the second rotating plate 16. The first telescopic rods 151 slide in the adjacent sliding grooves on the first rotating plate 15. The telescopic ends of the first telescopic rods 151 are provided with baffles for blocking the corresponding sliding grooves on the first rotating plate 15. The telescopic ends of the second telescopic rods 171 are provided with baffles for blocking the adjacent sliding grooves on the second rotating plate 16. The telescopic ends of the first telescopic rods 151 and the corresponding telescopic ends of the second telescopic rods 171 are both rotatably connected to the adjacent rectangular frames 18. Adjacent two rectangular frames 18 are hinged. The chambers of the second telescopic rods 171 are all communicated with the chambers of the six fixed columns 17. A limiting component for limiting the sliding plate 61 is arranged on the liquid guide pipe 21. A sliding column 7 is slidably arranged on the side wall of the second fixed housing 6. A spring is installed between the sliding column 7 and the second fixed housing 6. One side of the sliding column 7 close to the sliding plate 61 is hemispherical. The sliding plate 61 is provided with a blind hole. The hemispherical end of the sliding column 7 is in limit fit with the blind hole of the sliding plate 61. By making the flow cross-section on the nozzle 22 smaller, the pressure in the liquid guide pipe 21 is increased, triggering the movement of multiple rectangular frames 18, so that the shape formed by all the rectangular frames 18 becomes approximately circular, shortening the distance between the rectangular frames 18 and the nozzle 22, and strengthening the backwashing force of the nozzle 22 on the filter screen on the rectangular frames 18.

[0043] As Figure 9 and Figure 10As shown in the figure, the limiting component includes a third conduit 8. The third conduit 8 is fixedly connected and communicated with the side wall of the liquid guiding pipe 21, and the flow cross-section of the third conduit 8 is smaller than that of the second fixed shell 6. The rear part of the third conduit 8 is fixedly connected and communicated with the second fixed shell 6. A sliding block 81 is slidably arranged at the rear part of the third conduit 8. A tension spring is installed between the sliding block 81 and the third conduit 8. The lower part of the front side surface of the sliding block 81 is provided with an inclined surface. The inclined surface of the sliding block 81 slopes downward from front to back. The inclined surface of the sliding block 81 is in extrusion fit with the sliding plate 61, and the sliding block 81 is used to limit the sliding plate 61. By using the limit of the sliding block 81 on the sliding plate 61, the duration of the circular shape formed by all the rectangular frames 18 is extended, that is, the duration of the backwashing and cleaning of the device is extended.

[0044] During the above-mentioned backwashing and cleaning operation of the filter screen on the corresponding rectangular frame 18, when the pump body 23 works to extract the water source in the housing 1, due to the limiting effect of the sliding column 7 on the sliding plate 61, the pressure fluctuation in the liquid guiding pipe 21 will not affect the movement of the sliding plate 61. When the amount of impurities attached to the rectangular frame 18 increases, the amount of water in the housing 1 decreases. The floating ball 41 moves downward and drives the connected components to repeat the above operations. Among them, the third sliding frame 52 moves to make the flow cross-section of the corresponding nozzle 22 smaller. At this time, the liquid pressure in the liquid guiding pipe 21 gradually increases. The increased pressure squeezes the sliding plate 61 to move through the sliding column 7. When the sliding plate 61 moves, the connected spring is compressed. At the same time, the liquid pressure in the liquid guiding pipe 21 squeezes the sliding block 81 to move through the third conduit 8. The sliding block 81 moves and is inserted into the second fixed shell 6 and stretches the connected tension spring.

[0045] When the sliding plate 61 moves past the sliding block 81, the sliding plate 61 moves to squeeze the inclined surface of the sliding block 81. After the sliding plate 61 passes the sliding block 81, under the action of the pressure in the third conduit 8, the sliding block 81 limits the sliding plate 61. The sliding plate 61 moves to push the gas in the second fixed shell 6 through the chambers of the second conduit 62 and the fixed column 17 into the chambers of the six second telescopic rods 171. Subsequently, the telescopic ends of the multiple second telescopic rods 171 drive the adjacent rectangular frames 18 to move. Among them, the six first telescopic rods 151 undergo corresponding telescopic changes. Finally, all the rectangular frames 18 form an approximate circle, pulling the distance between the filter screen on the rectangular frame 18 and all the nozzles 22, and making the nozzles 22 vertically spray water to wash the filter screen on the rectangular frame 18, further improving the backwashing effect, accelerating the amount of impurities attached to the filter screen of the rectangular frame 18, and extending the continuous filtering duration of the device.

[0046] During the process of backwashing and cleaning the filter screen on the corresponding rectangular frame 18, as the filter screen on the rectangular frame 18 gradually becomes unclogged, the liquid level in the housing 1 gradually recovers, causing the floating ball 41 to gradually move upward. That is, the flow cross-section of all the nozzles 22 gradually becomes larger, thereby gradually restoring the liquid pressure in the liquid guide pipe 21. However, during this process, under the liquid pressure in the liquid guide pipe 21, the sliding block 81 always limits the sliding plate 61, extending the cleaning of the filter screens on all the rectangular frames 18 distributed in a circular shape by all the nozzles 22.

[0047] After the liquid pressure in the liquid guide pipe 21 is fully restored, under the pulling force of the connected tension spring, the sliding block 81 resets and releases the limit on the sliding plate 61. Subsequently, under the elastic force of the spring connected to the sliding plate 61, the sliding plate 61 moves in the reverse direction and resets, causing the sliding column 7 to be inserted back into its blind hole again. Then, when backwashing and cleaning again, the above operations are repeated.

[0048] It should be noted that the above preferred embodiments are only used to illustrate the technical concept and characteristics of the present invention. The purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A fish pond drum filter with an anti-blocking sewage discharge structure, comprising a housing (1), the housing (1) being provided with a rectangular plate (11), a U-shaped plate (12) and a partition plate (13) being provided inside the housing (1), a liquid inlet pipe (14) being embedded in a side wall of the housing (1) facing the U-shaped plate (12), the liquid inlet pipe (14) being rotatably provided with a first rotating plate (15) and a second rotating plate (16), the second rotating plate (16) being fixedly connected with a fixing column (17) penetrating the U-shaped plate (12) and being rotatably connected thereto, A rectangular frame (18) equidistantly distributed in the circumferential direction is provided between the first rotating plate (15) and the second rotating plate (16), a filter screen is provided in the rectangular frame (18), a dual-axis motor (19) is fixedly connected to the U-shaped plate (12), a bevel gear set is used to transmit power between the fixed column (17) and the adjacent output shafts on the dual-axis motor (19), a water purification unit (191) is installed between the partition plate (13) and the housing (1), and the partition plate (13) is provided with a circular hole communicating with the water purification unit (191), and the invention is characterized in that: The invention also comprises a guide tube (192), the guide tube (192) being embedded in the shell (1), the guide tube (192) being rotatably connected to the first rotating plate (15), and the liquid inlet pipe (14) penetrating the guide tube (192), the guide tube (192) being slidably provided with a guide plate (193), the guide plate (193) being located between the first rotating plate (15) and the second rotating plate (16), and a recoil mechanism for cleaning the filter screens on all the rectangular frames (18) being provided on the shell (1); The recoil mechanism comprises a first fixing plate (2), the first fixing plate (2) being arranged on the shell (1), the first fixing plate (2) being located above the rectangular frame (18), the first fixing plate (2) being provided with a liquid guiding cavity, the first fixing plate (2) being fixedly connected with a liquid guiding tube (21) communicating with the liquid guiding cavity thereon, the liquid guiding tube (21) penetrating the U-shaped plate (12) and being fixedly connected thereto, the first fixing plate (2) being fixedly connected with uniformly distributed spray heads (22), the spray heads (22) being connected with the liquid guiding cavity of the first fixing plate (2), and a pump body (23) being installed at one end of the liquid guiding tube (21) close to the shell (1).

2. The fish pond rotary drum filter with anti-blocking and sewage discharge structure according to claim 1, characterized in that: The liquid inlet pipe (14) is fixedly connected to a symmetrical inclined plate (141), the inclined plate (141) is provided with evenly distributed through holes, and the through holes on the inclined plate (141) are in communication with the liquid inlet pipe (14).

3. The fish pond rotary drum filter with anti-blocking and sewage discharge structure according to claim 1, characterized in that: All of the rectangular frames (18) are connected end to end to form a star shape, and all of the rectangular frames (18) are used to scoop out suspended impurities in the liquid.

4. The fish pond rotary drum filter with anti-blocking and sewage discharge structure according to claim 1, characterized in that: The invention also comprises a reciprocating mechanism for controlling the movement of the first fixed plate (2), the reciprocating mechanism being arranged on the U-shaped plate (12), the first fixed plate (2) being slidably connected to the shell (1), the reciprocating mechanism comprising a support plate (3), the support plate (3) being fixedly connected to the inner wall of the U-shaped plate (12), the support plate (3) being rotatably provided with a rotating shaft (31), the rotating shaft (31) being fixedly connected to an elliptical frame (32), the U-shaped plate (12) being slidably provided with a first sliding frame (33), the elliptical frame (32) being provided with a guide groove slidably connected to the first sliding frame (33), the first sliding frame (33) being fixedly connected to the first fixed plate (2), and the shell (1) being provided with a detection component for detecting the amount of liquid therein.

5. The fish pond drum filter with anti-blocking and sewage discharge structure according to claim 4, characterized in that: The detection component comprises a swing frame (4), the swing frame (4) being rotatably arranged on the outside of the shell (1), the side wall of the shell (1) being provided with a slide groove, a floating ball (41) being slidably arranged at the slide groove of the shell (1), the floating ball (41) being located between the shell (1) and the U-shaped plate (12), the floating ball (41) being slidably connected to the swing frame (4), the inner wall of the U-shaped plate (12) being fixedly connected with a first fixed shell (42), the first fixed shell (42) being slidably provided with a second sliding frame (43), a spring being installed between the second sliding frame (43) and the first fixed shell (42), the second sliding frame (43) penetrating the shell (1) and being slidably connected thereto, the swing frame (4) being provided with a spring which is slidably connected to the first fixed shell (42), and the second sliding frame (43) penetrating the shell (1) and being slidably connected thereto. The second sliding frame (43) is slidably connected to the slide groove, the inner wall of the U-shaped plate (12) is fixedly connected with a third telescopic rod (44), the cavity of the third telescopic rod (44) is connected to the first fixed shell (42) through a pipeline, the telescopic end of the third telescopic rod (44) is fixedly connected with a second fixed plate (45), the second fixed plate (45) is rotatably provided with a first locking block (46), the first locking block (46) and the corresponding output shaft on the dual-axis motor (19) are limited and slidable, the rotating shaft (31) is fixedly connected with a second locking block (47), the second locking block (47) and the first locking block (46) are limited and matched, and the first fixed plate (2) is provided with an adjustment component for adjusting the flow cross section on all the nozzles (22).

6. The fish pond rotary drum filter with anti-blocking and sewage discharge structure according to claim 5, characterized in that: The adjusting component comprises a first conduit (5), the first conduit (5) being embedded in the first fixing plate (2), the first conduit (5) penetrating the U-shaped plate (12) and being fixedly connected and communicated with the first fixing shell (42), the first fixing plate (2) being embedded with two fourth telescopic rods (51), the chambers of the two fourth telescopic rods (51) being fixedly connected and communicated with the first conduit (5), the telescopic ends of the two fourth telescopic rods (51) being fixedly connected with a third sliding frame (52), the third sliding frame (52) penetrating the adjacent nozzle (22) and being slidably connected thereto, the third sliding frame (52) being used to adjust the flow cross section in the corresponding nozzle (22).

7. The fish pond rotary drum filter with anti-blocking and sewage discharge structure according to claim 1, characterized in that: The expansion mechanism is also provided for adjusting the swing of the entire rectangular frame (18), the expansion mechanism being arranged on the catheter tube (21), the expansion mechanism comprising a second fixed shell (6), the second fixed shell (6) being fixedly connected to and communicated with the side wall of the catheter tube (21), and the second fixed shell (6) being located in the U-shaped plate (12), a sliding plate (61) being slidably arranged in the second fixed shell (6), a spring being installed between the sliding plate (61) and the second fixed shell (6), a second catheter (62) being fixed to and communicated with the second fixed shell (6), the second catheter (62) being rotatably connected to the fixed column (17), the fixed column (17) being provided with a chamber, the chamber of the fixed column (17) being communicated with the second catheter (62), and the The first rotating plate (15) is fixedly connected with first telescopic rods (151) which are equidistantly distributed in the circumference, and the fixed column (17) is fixedly connected with second telescopic rods (171) which are equidistantly distributed in the circumference. The telescopic end of the second telescopic rod (171) penetrates the second rotating plate (16) and is slidably connected thereto. The first telescopic rod (151) penetrates the first rotating plate (15) and is slidably connected thereto. The telescopic end of the first telescopic rod (151) and the corresponding telescopic end of the second telescopic rod (171) are both rotatably connected to adjacent rectangular frames (18). Two adjacent rectangular frames (18) are hinged. The chamber of the second telescopic rod (171) is in communication with the chamber of the fixed column (17). A limiting component for limiting the sliding plate (61) is provided on the catheter (21).

8. The fish pond rotary drum filter with anti-blocking and sewage discharge structure according to claim 7, characterized in that: A sliding column (7) is slidably provided on the side wall of the second fixed shell (6), a spring is installed between the sliding column (7) and the second fixed shell (6), a side of the sliding column (7) close to the sliding plate (61) is arranged in a hemispherical shape, the sliding plate (61) is provided with a blind hole, and the hemispherical end of the sliding column (7) is limitedly matched with the blind hole of the sliding plate (61).

9. The fish pond rotary drum filter with anti-blocking and sewage discharge structure according to claim 7, characterized in that: The limiting assembly comprises a third conduit (8), the third conduit (8) being fixedly connected to and in communication with the side wall of the liquid guiding tube (21), the third conduit (8) being fixedly connected to and in communication with the second fixed shell (6), the third conduit (8) being slidably provided with a sliding block (81), a tension spring being installed between the sliding block (81) and the third conduit (8), the sliding block (81) being provided with an inclined surface, the inclined surface of the sliding block (81) being pressed and matched with the sliding plate (61), and the sliding block (81) being used to limit the sliding plate (61).

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