Filtering device for aquaculture

Abstract

The invention relates to the technical field of sewage filtering equipment, in particular to a filtering device for aquaculture. The technical problems that when an existing filtering device is used for filtering breeding sewage, impurities are prone to being accumulated and attached, then filtering is not sufficient, the service life is short, and the filtering effect is poor are solved. A filtering device for aquaculture comprises a base, an outer frame, a motor and the like. An outer frame is fixedly connected to the base, and a motor is installed on one side of the outer frame. Residual impurities in the filter cartridge are pushed to the tail water port of the rotating frame through the material pushing frame to be accumulated, the rotating frame rotates reversely to intermittently discharge tail water, then the residual impurities in the filter cartridge are not prone to accumulation, and a transmission shaft drives a two-way threaded sleeve to rotate so that a conducting strip can intermittently start a water pump through a power connection frame; the water pump intermittently backwashes impurities blocked on the filter cartridge into the filter cartridge through the water spraying frame by virtue of water accumulated in the outer frame, so that the filter cartridge is not easy to block, and the filtering efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage filtering equipment, and in particular to a filtering device for aquaculture. Background Art

[0002] Aquaculture refers to the agricultural activity of raising and breeding aquatic animals and plants in an artificially controlled environment. As time goes by, the amount of pollutants such as breeding feces and other impurities in the breeding water will continue to increase, causing the breeding water to become sewage that cannot be used for breeding. In order to improve the quality of the breeding water, the staff will regularly filter the breeding water. During the filtration, the staff will continuously pump the sewage in the breeding pond into the filter box, and at the same time discharge the filtered water back into the breeding pond to form a circulating filtration effect. At the same time, the staff will also remove the impurities accumulated on the filter element, and use backwashing to remove the impurities blocked in the filter cartridge, thereby avoiding the accumulation and blockage of impurities and resulting in reduced filtration efficiency.

[0003] Since some stubborn impurities are easily attached to the inner wall of the filter cartridge, the current filter device is not convenient for repeatedly brushing off the impurities attached to the filter cartridge when filtering aquaculture sewage, which leads to insufficient filtration. It is also inconvenient to apply pressure to one side of the inner wall of the filter cartridge while repeatedly brushing, which leads to insufficient brushing off of the impurities. The brush will wear out after multiple brushings, which will cause the brushing member and the pushing member to be squeezed to one side when pressure is applied, making it difficult to reset and deal with the accumulated impurities again. The existing filter device is not convenient for resetting the brushing member and the pushing member after each pressure application, which leads to a poor service life of the filter device and poor filtering effect. Summary of the invention

[0004] In order to overcome the above shortcomings, the present invention provides a filtering device for aquaculture, which can repeatedly and pressure-brush off impurities to make the filtration more complete, and can reset the brushing member and the pushing member after pressure-brush to continue working in the case of wear and tear to increase the service life, thereby enhancing the filtering effect.

[0005] Technical solution: A filtering device for aquaculture, comprising a base, an outer frame, a motor, a water inlet plate, a rotating frame, a rotating cover, a filter cartridge, an annular blocking plate, an annular discharge pipe, a discharge mechanism and a backwashing mechanism. The base is fixedly connected to the outer frame, and the outer frame is provided with a plurality of water outlets. The motor is installed on one side of the outer frame, and the water inlet plate is fixedly connected to the other side of the outer frame. The side of the water inlet plate away from the motor is connected to the outside of the outer frame. The water inlet plate is rotatably connected to the rotating frame, and the rotating frame is located in the outer frame. The bottom of the rotating frame away from the water inlet plate is provided with a tail. A water inlet, a rotating cover is installed on the rotating frame, and several water filter outlets are opened on the rotating frame and the rotating cover. A filter cartridge is installed between the rotating frame and the rotating cover. An annular blocking piece is fixedly connected to the tail water outlet of the rotating frame, and an annular discharge pipe is fixedly connected to the side of the outer frame close to the motor. The bottom of the annular discharge pipe is connected to the outside of the outer frame, the tail water outlet of the rotating frame is in contact with the inner wall of the annular discharge pipe, and the annular blocking piece is rotatably connected to the inner side of the annular discharge pipe. A discharge mechanism for quickly pushing out impurities is provided on the rotating frame, and a backwashing mechanism for flushing the outside of the filter cartridge is provided on the motor.

[0006] In addition, it is particularly preferred that the discharging mechanism includes a fixed frame, a transmission shaft, a gear, a pusher rack, a fixed shaft, a compression spring, a rubber pad and a transmission assembly. The fixed frame is fixedly connected between the rotating frame and the side of the rotating cover away from the water inlet plate. The transmission shaft is installed on the output shaft of the motor. Gears are installed on the sides of the fixed frame and the transmission shaft that are close to each other. The two gears are meshed with each other. A pusher rack is placed in the filter cartridge. A number of brushes are provided on the outer surface of the pusher rack. A fixed shaft is fixedly connected to one end of the pusher rack close to the fixed frame. The fixed shaft passes through the fixed frame. The pusher rack, the fixed shaft and the filter cartridge are located on the same axis. A compression spring is connected to the fixed shaft. A rubber pad is installed on the other end of the compression spring. The rubber pad contacts the inner wall of the fixed frame on the side close to the pusher rack. A transmission assembly is provided between the transmission shaft and the fixed shaft.

[0007] In addition, it is particularly preferred that the transmission assembly consists of a driving wheel, a driven wheel and a flat belt, the driving wheel of the transmission assembly is installed on the transmission shaft, the driven wheel of the transmission assembly is installed on the fixed shaft, and the flat belt of the transmission assembly is wound between the driving wheel and the driven wheel of the transmission assembly.

[0008] In addition, it is particularly preferred that the outer side of the pusher rack is a spiral structure.

[0009] In addition, it is particularly preferred that the backwashing mechanism includes a battery pack, a two-way threaded sleeve, a threaded block, a conductive sheet, a power connection frame, a water pump and a water spray frame, the battery pack is installed on the motor, a two-way threaded sleeve is fixedly connected to the outer side of the transmission shaft, a threaded block is connected to the two-way threaded sleeve by threads, a conductive sheet is installed on one side of the threaded block, one end of the wires of the battery pack are connected to the conductive sheet, a power connection frame is installed on the side of the outer frame close to the motor, the conductive sheet will contact the power connection frame, a water pump is installed on the upper part of one side of the inner wall of the outer frame, one end of the wires of the power connection frame passes through the outer frame and is connected to the water pump, the water suction port of the water pump is located at the inner bottom of the outer frame and below the horizontal height of the water outlet, a water spray frame is fixedly connected to one side of the inner wall of the outer frame, the water spray frame is connected to the water outlet of the water pump, a plurality of spray holes are provided on the water spray frame, and the plurality of spray holes of the water spray frame are all aligned with the axial position of the filter cartridge.

[0010] In addition, it is particularly preferred that a reciprocating mechanism is also included, which is arranged on the transmission assembly, and is used to drive the pusher rack to repeatedly brush impurities attached to the inner wall of the filter cylinder. The reciprocating mechanism includes a support block, a roller, an extrusion ring, a limit block, and a belt limiting frame. The two support blocks are respectively fixedly connected to the side of the passive wheel of the transmission assembly away from the fixed frame, and the two support blocks are symmetrically arranged. The two support blocks are rotatably connected with the rollers, and the inner wall of the outer frame is fixedly connected with an extrusion ring on the side close to the motor, and one side of the extrusion ring is respectively in contact with the two rollers, and both sides of the extrusion ring are fixedly connected with limit blocks. The two limit blocks are slidably connected with belt limiting frames, and the two belt limiting frames are respectively in contact with the two sides of the passive wheel of the transmission assembly, and the flat belt of the transmission assembly passes through the two gaps formed between the passive wheel of the transmission assembly and the two belt limiting frames.

[0011] Furthermore, it is particularly preferred that the side of the pressing ring in contact with the two rollers has a corrugated structure.

[0012] In addition, it is particularly preferred that a pressure mechanism is also included, which is arranged on the extrusion ring and is used to apply pressure to the push rack to one side. The pressure mechanism includes a fixed cylinder, a movable column, a pressure spring, a ball and a wedge block. The fixed cylinder is fixedly connected to the inner side of the extrusion ring, and a movable column is slidably connected in the fixed cylinder. A pressure spring is connected between the movable column and the fixed cylinder. A ball is embedded in the end of the movable column away from the fixed cylinder, and the ball is in contact with the outer side of the fixed shaft. A wedge block is fixed to the side of the fixed shaft away from the push rack.

[0013] In addition, it is particularly preferred that a reset mechanism is also included, the reset mechanism is arranged on the fixed shaft, the reset mechanism is used to reset the push rack after pressure is applied, the reset mechanism includes a limit plate, two movable columns, a reset spring and two balls, the limit plate is fixedly connected to the fixed shaft, the limit plate is located in the fixed frame, the outer side of the limit plate is evenly slidably connected with six movable columns two, the six movable columns two are connected to the limit plate with a reset spring, there are six reset springs in total, and the ends of the six movable columns two away from each other are embedded with two balls, and the six two balls are in contact with the inner wall of the fixed frame.

[0014] In addition, it is particularly preferred that a blocking net is further included, which is fixed to the inner wall of the outer frame and is located on one side of the plurality of water outlets, and the blocking net blocks each water outlet.

[0015] 1. The present invention drives the filter cartridge to reverse and the pusher rack to rotate forwardly by a motor. The pusher rack rotates forwardly to gradually push the impurities remaining in the filter cartridge to the tailwater outlet of the rotating rack for accumulation. The tailwater outlet of the rotating rack is reversed and intermittently connected to the annular discharge pipe, so that the accumulated impurities and a small part of sewage form tailwater and are discharged intermittently, so that the impurities remaining in the filter cartridge are not easily accumulated, resulting in a slow filtration speed, thereby improving the filtration efficiency. The battery pack transmits electrical energy to the conductive sheet, and the rotation of the transmission shaft drives the bidirectional threaded sleeve to rotate. The rotation of the bidirectional threaded sleeve causes the conductive sheet to reciprocate through the threaded block. The reciprocating movement of the conductive sheet will intermittently start the water pump through the power connection rack, and the water pump intermittently and evenly sprays the water accumulated in the outer frame on the outer surface of the filter cartridge through a plurality of spray holes of the water spray rack. The water sprayed by the water spray rack intermittently backwashes the impurities blocked on the filter cartridge into the filter cartridge, thereby making the filter cartridge not easily blocked and causing sewage to be difficult to filter, thereby further improving the filtration efficiency.

[0016] 2. The rotation of the passive wheel of the transmission assembly will drive the two rollers to rotate. The two rollers make the passive wheel of the transmission assembly and the fixed shaft move back and forth laterally along the wavy structure of the extrusion ring. The reciprocating movement of the fixed shaft will drive the rotating pusher rack to move back and forth. The rotation and reciprocating movement of the brush on the pusher rack will fully and repeatedly brush off the stubborn impurities attached to the inner wall of the filter cartridge, so that the filter cartridge can filter the sewage more fully, thereby enhancing the filtering effect of aquaculture sewage.

[0017] 3. The reciprocating movement of the fixed shaft will drive the wedge block to move reciprocatingly. The reciprocating movement of the wedge block repeatedly squeezes the pressure spring through ball one and moving column one. The pressure spring repeatedly applies pressure to the push rack through the wedge block and the fixed shaft, so that the push rack continuously applies pressure to one side of the inner wall of the filter cartridge while repeatedly brushing the inner wall of the filter cartridge, so that the brush of the push rack can more fully brush off the impurities on the inner wall of the filter cartridge; when there is a small gap between the brush of the push rack and the inner wall of the filter cartridge, the pressure of ball one will squeeze the wedge block so that the fixed shaft and the push rack move a short distance to one side, and the pressure of the pressure spring will continue to be applied to the push rack. After the wedge block is reset, the reset spring resets the fixed shaft and the push rack to the same axis of the filter cartridge together, so that the push rack can continue to push the impurities remaining in the filter cartridge after the pressure is completed, thereby extending the service life of the push rack, thereby further enhancing the filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0020] Figure 3 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0021] Figure 4 It is a schematic diagram of a partially disassembled three-dimensional structure of the present invention.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the discharging mechanism of the present invention.

[0023] Figure 6 It is a partially cutaway three-dimensional structural schematic diagram of the discharging mechanism and the resetting mechanism of the present invention.

[0024] Figure 7 For the present invention Figure 1 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0025] Figure 8 It is a partially cutaway three-dimensional structural schematic diagram of the backwashing mechanism of the present invention.

[0026] Fig. 9 It is a schematic diagram of the cross-sectional three-dimensional structure of the water pump and the water spray frame of the present invention.

[0027] Fig.10 It is a cross-sectional three-dimensional structural schematic diagram of the reciprocating mechanism and the pressure-applying mechanism of the present invention.

[0028] Fig.11 It is a cross-sectional three-dimensional structural schematic diagram of the reciprocating mechanism, the pressing mechanism and the resetting mechanism of the present invention.

[0029] Fig.12 It is a schematic diagram of the disassembled three-dimensional structure of the reciprocating mechanism of the present invention.

[0030] Fig.13 It is a schematic cross-sectional three-dimensional structural diagram of the pressure-applying mechanism of the present invention.

[0031] Fig.14 It is a schematic cross-sectional three-dimensional structural diagram of the reset mechanism of the present invention.

[0032] Figure numbers: 1, base, 2, outer frame, 21, water outlet, 3, motor, 4, water inlet plate, 41, rotating frame, 42, rotating cover, 43, filter cartridge, 44, annular barrier, 45, annular discharge pipe, 5, discharge mechanism, 51, fixed frame, 52, transmission shaft, 53, gear, 54, pusher frame, 55, fixed shaft, 56, compression spring, 57, rubber pad, 58, transmission assembly, 6, backwashing mechanism, 61, battery pack, 62, two-way thread Sleeve, 63, threaded block, 64, conductive sheet, 65, power connection frame, 66, water pump, 67, water spray frame, 7, reciprocating mechanism, 71, support block, 72, roller, 73, extrusion ring, 74, limit block, 75, belt limit frame, 8, pressure mechanism, 81, fixed cylinder, 82, moving column one, 83, pressure spring, 84, ball one, 85, wedge block, 86, limit plate, 87, moving column two, 88, reset spring, 89, ball two, 9, blocking net. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0034] Embodiment 1: A filtering device for aquaculture, such as Figure 1-Figure 14As shown, it includes a base 1, an outer frame 2, a motor 3, a water inlet plate 4, a rotating frame 41, a rotating cover 42, a filter cartridge 43, an annular barrier 44, an annular discharge pipe 45, a discharge mechanism 5 and a backwashing mechanism 6. The outer frame 2 is welded to the base 1, and a plurality of water outlets 21 are opened on the outer frame 2. The motor 3 is installed on one side of the outer frame 2, and the water inlet plate 4 is welded on the other side of the outer frame 2. The side of the water inlet plate 4 away from the motor 3 is connected to the outside of the outer frame 2. The rotating frame 41 is rotatably connected to the water inlet plate 4. The rotating frame 41 is located in the outer frame 2. A tailwater outlet is opened at the bottom of the side of the rotating frame 41 away from the water inlet plate 4. The rotating cover 42 is installed on the rotating frame 41. The rotating frame 41 and the rotating cover 42 are both provided with a plurality of water filter outlets. The rotating frame 41 is connected to the outer frame 2. A filter cartridge 43 is installed between the rotating covers 42. The filter cartridge 43 is used to filter aquaculture sewage. An annular barrier 44 is welded on the tailwater outlet of the rotating frame 41. The annular barrier 44 is used to weld an annular discharge pipe 45 on the side of the outer frame 2 close to the motor 3. The bottom of the annular discharge pipe 45 is connected to the outside of the outer frame 2. The tailwater outlet of the rotating frame 41 contacts the inner wall of the annular discharge pipe 45. The annular barrier 44 is rotatably connected to the inner side of the annular discharge pipe 45. The annular barrier 44 is used to isolate the connection between the outer frame 2 and the annular discharge pipe 45. The annular discharge pipe 45 is used to discharge impurities remaining in the filter cartridge 43. A discharge mechanism 5 for quickly pushing out impurities is provided on the rotating frame 41. A backwashing mechanism 6 for flushing the outside of the filter cartridge 43 is provided on the motor 3.

[0035] The discharging mechanism 5 includes a fixed frame 51, a transmission shaft 52, a gear 53, a pusher frame 54, a fixed shaft 55, a compression spring 56, a rubber pad 57 and a transmission assembly 58. The fixed frame 51 is welded between the rotating frame 41 and the side of the rotating cover 42 away from the water inlet plate 4. The transmission shaft 52 is installed on the output shaft of the motor 3. The fixed frame 51 and the transmission shaft 52 are installed on the side close to each other. Gears 53 are meshed with each other. A pusher frame 54 is placed in the filter cartridge 43. A plurality of brushes are arranged on the outer surface of the pusher frame 54. The pusher frame 54 is used to push the filter cartridge 43 The impurities remaining inside are pushed to the tailwater outlet of the rotating frame 41 for accumulation, and a fixed shaft 55 is welded to one end of the pushing rack 54 close to the fixed frame 51, and the fixed shaft 55 passes through the fixed frame 51. The pushing rack 54, the fixed shaft 55 and the filter cartridge 43 are located on the same axis, and a compression spring 56 is connected to the fixed shaft 55. A rubber pad 57 is installed on the other end of the compression spring 56. The rubber pad 57 contacts with one side of the inner wall of the fixed frame 51 close to the pushing rack 54, and the rubber pad 57 is used to isolate the communication between the outer frame 2 and the fixed frame 51. A transmission assembly 58 is provided between the transmission shaft 52 and the fixed shaft 55.

[0036] The transmission assembly 58 consists of a driving wheel, a driven wheel and a flat belt. The driving wheel of the transmission assembly 58 is installed on the transmission shaft 52, the driven wheel of the transmission assembly 58 is installed on the fixed shaft 55, and the flat belt of the transmission assembly 58 is wound between the driving wheel and the driven wheel of the transmission assembly 58.

[0037] The outer side of the pushing rack 54 is a spiral structure, and the spiral structure of the pushing rack 54 is used to push the impurities remaining in the filter cartridge 43 to the tailwater outlet of the rotating rack 41 for accumulation.

[0038] The backwash mechanism 6 includes a battery pack 61, a bidirectional threaded sleeve 62, a threaded block 63, a conductive sheet 64, a power connection frame 65, a water pump 66 and a water spray frame 67. The battery pack 61 is installed on the motor 3. The outer side of the transmission shaft 52 is welded with a bidirectional threaded sleeve 62. The bidirectional threaded sleeve 62 is connected to the threaded block 63 by threads. A conductive sheet 64 is installed on one side of the threaded block 63. The wires of the battery pack 61 are connected to the conductive sheet 64 one by one. The power connection frame 65 is installed on the side of the outer frame 2 close to the motor 3. The conductive sheet 64 will contact with the power receiving frame 65, a water pump 66 is installed on the upper part of one side of the inner wall of the outer frame 2, one end of the wire of the power receiving frame 65 passes through the outer frame 2 and is connected to the water pump 66, the water suction port of the water pump 66 is located at the inner bottom of the outer frame 2 and is lower than the horizontal height of the water outlet 21, a water spray frame 67 is welded on one side of the inner wall of the outer frame 2, the water spray frame 67 is connected with the drainage port of the water pump 66, a plurality of spray holes are provided on the water spray frame 67, and the plurality of spray holes of the water spray frame 67 are all aligned with the axial position of the filter cartridge 43.

[0039] First, the staff connects the sewage in the breeding pond to the water inlet plate 4 through an external pump, and at the same time connects the water pipe to the water outlet 21 and connects the other end of the water pipe to the breeding pond. Then the staff starts the motor 3 and the battery pack 61, and the external pump pumps the sewage through the water inlet plate 4 into the filter cartridge 43 for filtration. The filtered water will be discharged into the outer frame 2 through the filter ports on the rotating frame 41 and the rotating cover 42 for accumulation. Under the action of the rubber pad 57, the filtered water is not easy to enter the fixed frame 51. After the accumulated water reaches the height of the water outlet 21, the water exceeding the height will be discharged from the outer frame through the blocking net 9 and the water outlet 21 2 and then flows back to the breeding pond through the water pipe. The screen 9 will perform secondary filtration on the filtered water, thereby making the filtration effect better. This reciprocating process can circulate and filter the sewage in the breeding pond, thereby quickly filtering the sewage. The positive rotation of the output shaft of the motor 3 will drive the transmission shaft 52 to rotate forward, and the positive rotation of the transmission shaft 52 will drive the fixed frame 51 to reverse through the two gears 53. The reverse rotation of the fixed frame 51 will drive the rotating frame 41, the rotating cover 42 and the filter cartridge 43 to reverse together. The reverse rotation of the rotating frame 41 will drive the annular blocking plate 44 to reverse. The reverse rotation of the tail water outlet of the rotating frame 41 will fit with the inner wall of the annular discharge pipe 45, thereby preventing the sewage in the filter cartridge 43 from passing through the rotating frame 41. The tail water outlet of the rotating frame 41 is discharged, and the annular blocking piece 44 will block the annular discharge pipe 45 so that the water accumulated in the outer frame 2 will not be discharged through the annular discharge pipe 45. At the same time, the transmission shaft 52 will drive the fixed shaft 55 and the pushing frame 54 to rotate forwardly through the transmission assembly 58. Under the spiral structure of the pushing frame 54, the forward rotation of the pushing frame 54 will gradually push the impurities filtered out of the filter cartridge 43 to the tail water outlet of the rotating frame 41 for accumulation. Subsequently, the rotating frame 41 continues to reverse, which will make the tail water outlet of the rotating frame 41 connected with the annular discharge pipe 45. The impurities accumulated at the tail water outlet of the rotating frame 41 will form tail water with a small part of the sewage, and the tail water will be discharged through the rotating frame 41. The tailwater outlet of the rotating frame 41 and the annular discharge pipe 45 are discharged from the outer frame 2. The staff can place the container at the bottom of the annular discharge pipe 45 to receive it in preparation for other work. In this way, the forward rotation of the pushing frame 54 will gradually push the impurities remaining in the filter cartridge 43 to the tailwater outlet of the rotating frame 41 for accumulation. When the rotating frame 41 is reversed, the tailwater outlet of the rotating frame 41 will be intermittently connected with the annular discharge pipe 45, so that the accumulated impurities and a small part of the sewage form tailwater and are intermittently discharged through the tailwater outlet of the rotating frame 41 and the annular discharge pipe 45, so that the impurities remaining in the filter cartridge 43 are not easy to accumulate, resulting in a slow filtration speed, thereby improving the filtration efficiency;After the battery pack 61 is started, it will transmit electric energy to the conductive sheet 64. The rotation of the transmission shaft 52 will drive the bidirectional threaded sleeve 62 to rotate. The rotation of the bidirectional threaded sleeve 62 will drive the threaded block 63 to move back and forth horizontally. The reciprocating movement of the threaded block 63 will drive the conductive sheet 64 to move back and forth. The conductive sheet 64 will first be sleeved on the power receiving frame 65. The conductive sheet 64 will transmit the transmitted electric energy to the power receiving frame 65. Then the power receiving frame 65 will transmit the electric energy to the water pump 66, and then control the water pump 66 to start. When the water pump 66 is started, the water accumulated in the outer frame 2 will be evenly sprayed on the outer surface of the filter cartridge 43 through the several spray holes of the water spraying frame 67. Then the conductive sheet 64 The reverse movement will disengage the power connection frame 65, thereby disconnecting the water pump 66. Repeating this process, the reciprocating movement of the conductive sheet 64 will intermittently start the water pump 66 through the power connection frame 65. The water pump 66 will intermittently and evenly spray the water accumulated in the outer frame 2 onto the outer surface of the filter cartridge 43 through the several spray holes of the water spray frame 67. The water sprayed by the water spray frame 67 will intermittently backwash the impurities blocked on the filter cartridge 43 from the outer surface of the filter cartridge 43 into the filter cartridge 43, thereby making the filter cartridge 43 less likely to be blocked and causing sewage to be difficult to filter, thereby further improving the filtering efficiency. After the filtering is completed, the staff will turn off the motor 3 and the battery pack 61, and turn off the external pump at the same time. ;

[0040] Embodiment 2: Based on embodiment 1, Figure 10-12 As shown, it also includes a reciprocating mechanism 7, which is arranged on the transmission assembly 58. The reciprocating mechanism 7 is used to drive the pusher frame 54 to repeatedly brush the impurities attached to the inner wall of the filter cylinder 43. The reciprocating mechanism 7 includes a support block 71, a roller 72, an extrusion ring 73, a limit block 74, and a belt limiting frame 75. The two support blocks 71 are respectively welded to the side of the passive wheel of the transmission assembly 58 away from the fixed frame 51. The two support blocks 71 are symmetrically arranged. The two support blocks 71 are rotatably connected with the roller 72. The inner wall of the outer frame 2 is welded with an extrusion ring 73 on the side close to the motor 3. One side of the extrusion ring 73 is in contact with the two rollers 72 respectively. The two sides of the extrusion ring 73 are welded with limit blocks 74. The two limit blocks 74 are slidably connected with the belt limiting frames 75. The two belt limiting frames 75 are respectively in contact with the two sides of the passive wheel of the transmission assembly 58. The flat belt of the transmission assembly 58 passes through the two gaps formed between the passive wheel of the transmission assembly 58 and the two belt limiting frames 75.

[0041] The side of the extrusion ring 73 that contacts the two rollers 72 is a wave-shaped structure, and the wave-shaped structure of the extrusion ring 73 is used to squeeze the two rollers 72 .

[0042] When the passive wheel of the transmission assembly 58 rotates, the two rollers 72 will be driven to rotate respectively through the two support blocks 71. The wavy structure of the extrusion ring 73 will first squeeze the two rollers 72 to move in the direction close to the fixed frame 51. The movement of the two rollers 72 will cause the passive wheel of the transmission assembly 58 to drive the fixed shaft 55 to move. The compression spring 56 will squeeze the rubber pad 57 and be squeezed. Then the two rollers 72 continue to rotate, and the wavy structure of the extrusion ring 73 no longer squeezes the two rollers 72. The compression spring 56 resets and drives the fixed shaft 55 and the passive wheel of the transmission assembly 58 to reset. Repeat this process. Under the action of the wavy structure of the extrusion ring 73, the two rollers 72 will move along the wavy structure of the extrusion ring 73 to make the transmission assembly 58 rotate. The passive wheel of component 58 and the fixed shaft 55 move back and forth laterally together. The reciprocating movement of the passive wheel of the transmission component 58 will repeatedly pull the flat belt of the transmission component 58. At the same time, the reciprocating movement of the passive wheel of the transmission component 58 will drive the belt limiting frame 75 to move back and forth. Under the action of the belt limiting frame 75, the flat belt of the transmission component 58 is not easy to disengage during the pulling process, thereby making the transmission more stable; the reciprocating movement of the fixed shaft 55 will drive the rotating pushing frame 54 to move back and forth together, and the brush on the pushing frame 54 rotates and reciprocates to fully and repeatedly brush off the stubborn impurities attached to the inner wall of the filter cylinder 43, thereby enabling the filter cylinder 43 to more fully filter the sewage, thereby enhancing the filtering effect of the aquaculture sewage.

[0043] Embodiment 3: Based on embodiment 2, Figure 10-Figure 14 As shown, it also includes a pressure mechanism 8, which is arranged on the extrusion ring 73. The pressure mechanism 8 is used to apply pressure to the push rack 54 to one side. The pressure mechanism 8 includes a fixed cylinder 81, a movable column 82, a pressure spring 83, a ball 84 and a wedge block 85. The fixed cylinder 81 is welded on the inner side of the extrusion ring 73, and a movable column 82 is slidably connected in the fixed cylinder 81. A pressure spring 83 is connected between the movable column 82 and the fixed cylinder 81. A ball 84 is embedded in the end of the movable column 82 away from the fixed cylinder 81, and the ball 84 contacts the outer side of the fixed shaft 55. A wedge block 85 is welded on the side of the fixed shaft 55 away from the push rack 54. The wedge block 85 is used to extrude the ball 84.

[0044] It also includes a reset mechanism, which is arranged on the fixed shaft 55. The reset mechanism is used to reset the push rack 54 after pressure is applied. The reset mechanism includes a limit plate 86, a movable column 87, a reset spring 88 and a ball 89. The limit plate 86 is welded on the fixed shaft 55, and the limit plate 86 is located in the fixed frame 51. The outer side of the limit plate 86 is evenly and slidably connected with six movable columns 87. The six movable columns 87 are all connected to the limit plate 86 with a reset spring 88. There are six reset springs 88 in total. The ends of the six movable columns 87 that are away from each other are all embedded with ball 89, and the six ball 89 are all in contact with the inner wall of the fixed frame 51.

[0045] The outer frame 2 further includes a screen 9 , which is welded to the inner wall of the outer frame 2 and located on one side of the plurality of water outlets 21 . The screen 9 blocks each of the water outlets 21 .

[0046] The reciprocating movement of the fixed shaft 55 will drive the wedge block 85 to move reciprocatingly. When the wedge block 85 moves toward the fixed frame 51, the wedge block 85 will squeeze the ball 84 and the moving column 82 to move toward the fixed cylinder 81. Under the action of the pressure spring 83, the pressure spring 83 will apply pressure to the wedge block 85 and the fixed shaft 55 through the moving column 82 and the ball 84. At the same time, the fixed shaft 55 will transmit the force applied by the pressure spring 83 to the pusher rack 54. Then the wedge block 85 moves in the opposite direction and no longer squeezes the ball 84 and the moving column 82. The pressure The reset of spring 83 drives movable column 82 and ball 84 to reset together, and this is repeated. The reciprocating movement of wedge block 85 will repeatedly squeeze pressure spring 83 through ball 84 and movable column 82, and pressure spring 83 will repeatedly apply pressure to push rack 54 through wedge block 85 and fixed shaft 55, so that push rack 54 repeatedly brushes the inner wall of filter cylinder 43 while continuously applying pressure to one side of the inner wall of filter cylinder 43, so that the brush of push rack 54 can more fully brush off impurities on the inner wall of filter cylinder 43, thereby further enhancing the filtering effect of aquaculture sewage.

[0047] After repeatedly brushing the inner wall of the filter cartridge 43, the brush of the pusher rack 54 will be worn and produce a small gap. When there is a small gap between the brush of the pusher rack 54 and the inner wall of the filter cartridge 43, the ball 1 84 will squeeze the wedge block 85 when applying pressure, so that the fixed shaft 55 and the pusher rack 54 move to one side a short distance. The movement of the fixed shaft 55 to one side will drive the six moving columns 2 87 and the six ball 2 89 to move to one side together through the limit plate 86. The fixed frame 51 will squeeze some of the ball 2 89 and the moving column 2 87 to compress the reset spring 88. The pressure of the pressure spring 83 will continue to be applied to the pusher rack 54. 4, so that the pusher rack 54 continues to apply pressure to one side of the inner wall of the filter cartridge 43. When the wedge block 85 is reset, the pressure spring 83 is reset so that the ball 1 84 no longer squeezes the wedge block 85, and several compressed reset springs 88 drive several squeezed moving columns 2 87 and ball 2 89 to reset, so that the limit plate 86 drives the fixed shaft 55, the pusher rack 54 and the wedge block 85 to reset to the same axis of the filter cartridge 43, so that the pusher rack 54 after the pressure is completed can continue to push the impurities remaining in the filter cartridge 43, thereby extending the service life of the pusher rack 54, thereby further enhancing the filtering effect.

[0048] The above description is only an example of the present invention and is not intended to limit the present invention. Any equivalent substitutions made within the principles of the present invention should be included in the protection scope of the present invention. The contents not elaborated in detail in the present invention belong to the existing technologies known to those skilled in the art.

Claims

1. A filtering device for aquaculture, characterized in that: The invention comprises a base (1), an outer frame (2), a motor (3), a water inlet plate (4), a rotating frame (41), a rotating cover (42), a filter cartridge (43), an annular blocking plate (44), an annular discharge pipe (45), a discharge mechanism (5) and a backwashing mechanism (6); the base (1) is fixedly connected to the outer frame (2); the outer frame (2) is provided with a plurality of water outlets (21); the motor (3) is mounted on one side of the outer frame (2); the water inlet plate (4) is fixedly connected to the other side of the outer frame (2); the side of the water inlet plate (4) away from the motor (3) is connected to the outside of the outer frame (2); the water inlet plate (4) is rotatably connected to the rotating frame (41); the rotating frame (41) is located inside the outer frame (2); the bottom of the side of the rotating frame (41) away from the water inlet plate (4) is provided with a tail water outlet; A rotating cover (42) is installed on the rotating frame (41), and a plurality of water filter ports are provided on the rotating frame (41) and the rotating cover (42). A filter cartridge (43) is installed between the rotating frame (41) and the rotating cover (42). An annular blocking plate (44) is fixedly connected to the tail water port of the rotating frame (41). An annular discharge pipe (45) is fixedly connected to the side of the outer frame (2) close to the motor (3). The bottom of the annular discharge pipe (45) is connected to the outside of the outer frame (2). The tail water port of the rotating frame (41) contacts the inner wall of the annular discharge pipe (45). The annular blocking plate (44) is rotatably connected to the inner side of the annular discharge pipe (45). A discharge mechanism (5) for quickly ejecting impurities is provided on the rotating frame (41), and a backwashing mechanism (6) for washing the outer side of the filter cartridge (43) is provided on the motor (3).

2. A filtering device for aquaculture as claimed in claim 1, characterized in that: The discharging mechanism (5) comprises a fixed frame (51), a transmission shaft (52), a gear (53), a material pushing frame (54), a fixed shaft (55), a compression spring (56), a rubber pad (57) and a transmission assembly (58); the fixed frame (51) is fixedly connected between the rotating frame (41) and the side of the rotating cover (42) away from the water inlet plate (4); the transmission shaft (52) is mounted on the output shaft of the motor (3); the fixed frame (51) and the transmission shaft (52) are both mounted on the sides close to each other; the two gears (53) are meshed with each other; the material pushing frame (54) is placed in the filter cartridge (43); A plurality of brushes are arranged on the outer surface of the pusher frame (54); a fixed shaft (55) is fixedly connected to one end of the pusher frame (54) close to the fixed frame (51); the fixed shaft (55) passes through the fixed frame (51); the pusher frame (54), the fixed shaft (55) and the filter cartridge (43) are located on the same axis; a compression spring (56) is connected to the fixed shaft (55); a rubber pad (57) is installed at the other end of the compression spring (56); the rubber pad (57) contacts with a side of the inner wall of the fixed frame (51) close to the pusher frame (54); and a transmission assembly (58) is arranged between the transmission shaft (52) and the fixed shaft (55).

3. A filtering device for aquaculture as claimed in claim 2, characterized in that: The transmission assembly (58) is composed of a driving wheel, a driven wheel and a flat belt. The driving wheel of the transmission assembly (58) is installed on the transmission shaft (52), the driven wheel of the transmission assembly (58) is installed on the fixed shaft (55), and the flat belt of the transmission assembly (58) is wound between the driving wheel and the driven wheel of the transmission assembly (58).

4. A filtering device for aquaculture as claimed in claim 2, characterized in that: The outer side of the pusher frame (54) is a spiral structure.

5. A filtering device for aquaculture as claimed in claim 2, characterized in that: The backwash mechanism (6) comprises a battery pack (61), a bidirectional threaded sleeve (62), a threaded block (63), a conductive sheet (64), a power connection frame (65), a water pump (66) and a water spray frame (67). The battery pack (61) is mounted on the motor (3). The outer side of the transmission shaft (52) is fixedly connected with the bidirectional threaded sleeve (62). The threaded block (63) is connected to the bidirectional threaded sleeve (62) by threads. The conductive sheet (64) is mounted on one side of the threaded block (63). One end of the wires of the battery pack (61) is connected to the conductive sheet (64). The power connection frame (65) is mounted on the side of the outer frame (2) close to the motor (3). The conductive sheet (64) will contact the power receiving frame (65), a water pump (66) is installed on the upper part of one side of the inner wall of the outer frame (2), one end of the wire of the power receiving frame (65) passes through the outer frame (2) and is connected to the water pump (66), the water suction port of the water pump (66) is located at the inner bottom of the outer frame (2) and is lower than the horizontal height of the water outlet (21), a water spray frame (67) is fixedly connected to one side of the inner wall of the outer frame (2), the water spray frame (67) is connected to the water outlet of the water pump (66), and a plurality of spray holes are provided on the water spray frame (67), and the plurality of spray holes of the water spray frame (67) are all aligned with the axial position of the filter cartridge (43).

6. A filtering device for aquaculture as claimed in claim 5, characterized in that: The invention also comprises a reciprocating mechanism (7), which is arranged on the transmission assembly (58). The reciprocating mechanism (7) is used to drive the pushing frame (54) to repeatedly brush the impurities attached to the inner wall of the filter cylinder (43). The reciprocating mechanism (7) comprises a support block (71), a roller (72), an extrusion ring (73), a limit block (74), and a belt limit frame (75). The two support blocks (71) are respectively fixed to the side of the passive wheel of the transmission assembly (58) away from the fixed frame (51). The two support blocks (71) are symmetrically arranged. Both support blocks (71) are rotatably connected to the support block (71). A roller (72) is provided, and an extrusion ring (73) is fixedly connected to one side of the inner wall of the outer frame (2) close to the motor (3). One side of the extrusion ring (73) is respectively in contact with the two rollers (72). Both sides of the extrusion ring (73) are fixedly connected with limit blocks (74). Both limit blocks (74) are slidably connected with belt limit frames (75). The two belt limit frames (75) are respectively in contact with both sides of the passive wheel of the transmission component (58). The flat belt of the transmission component (58) passes through two gaps formed between the passive wheel of the transmission component (58) and the two belt limit frames (75).

7. A filtering device for aquaculture as claimed in claim 6, characterized in that: The side of the extrusion ring (73) that contacts the two rollers (72) is a wave-shaped structure.

8. A filtering device for aquaculture as claimed in claim 6, characterized in that: The invention also comprises a pressure mechanism (8), which is arranged on the extrusion ring (73) and is used for applying pressure to the pusher frame (54) to one side. The pressure mechanism (8) comprises a fixed cylinder (81), a movable column (82), a pressure spring (83), a ball (84) and a wedge block (85). The fixed cylinder (81) is fixedly connected to the inner side of the extrusion ring (73). The movable column (82) is slidably connected inside the fixed cylinder (81). The pressure spring (83) is connected between the movable column (82) and the fixed cylinder (81). The end of the movable column (82) away from the fixed cylinder (81) is embedded with a ball (84), and the ball (84) contacts the outer side of the fixed shaft (55). The side of the fixed shaft (55) away from the pusher frame (54) is fixedly connected with a wedge block (85).

9. A filtering device for aquaculture as claimed in claim 8, characterized in that: The invention also comprises a reset mechanism, which is arranged on the fixed shaft (55) and is used for resetting the pusher frame (54) after pressure is applied. The reset mechanism comprises a limit plate (86), a second movable column (87), a reset spring (88) and a second ball (89). The limit plate (86) is fixedly connected to the fixed shaft (55). The limit plate (86) is located in the fixed frame (51). Six second movable columns (87) are evenly slidably connected to the outer side of the limit plate (86). The six second movable columns (87) are connected to the limit plate (86) with a reset spring (88). There are six reset springs (88) in total. The ends of the six second movable columns (87) away from each other are all embedded with second balls (89). The six second balls (89) are in contact with the inner wall of the fixed frame (51).

10. A filtering device for aquaculture as claimed in claim 9, characterized in that: It also includes a blocking net (9), which is fixed to the inner wall of the outer frame (2) and is located on one side of the plurality of water outlets (21), and the blocking net (9) blocks each water outlet (21).

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