Filtering device of aquaculture water inlet pipe and use method

Abstract

The invention relates to the technical field of aquaculture filtering, in particular to a filtering device of an aquaculture water inlet pipe and a using method.The filtering device comprises a device shell, the inner side surface of the device shell is fixedly connected with a front shell, and the inner side surface of the device shell is fixedly connected with a middle shell; the device comprises a device shell, an outer supporting frame is fixedly connected to the outer side surface of the device shell, a metering switching mechanism is arranged on the inner side surface of the device shell, a driving clearing mechanism is arranged on the inner side surface of the device shell, and a linkage brushing mechanism is arranged on the outer side surface of the driving clearing mechanism. An input pipeline is fixedly connected to the outer side surface of the front shell, an output pipeline is fixedly connected to the outer side surface of the middle shell, when the water flow thrust borne by the filter screens is increased due to impurity blockage, the filter screens are automatically switched through the pressure change of the water flow, alternate use of the filter screens is achieved, and water flow interruption caused by filter screen blockage is reduced; and long-time use of a single filter screen is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture filtration, and in particular to a filtering device for an aquaculture water inlet pipe and a use method thereof. Background Art

[0002] In aquaculture, water filtration is a key link in ensuring water quality and preventing diseases. Untreated water may carry pathogens, impurities and harmful substances, posing a threat to the health of aquatic organisms. Filtration systems usually include physical filtration, chemical filtration and biological filtration. Physical filtration removes large particles of impurities through screens and filter cotton; chemical filtration uses activated carbon and other substances to adsorb harmful substances; biological filtration relies on microorganisms to decompose organic matter and purify water quality. Regular maintenance of filtration equipment to ensure its efficient operation is the basis for maintaining a good environment for aquaculture water bodies. Scientific and reasonable water filtration measures can not only improve the survival rate and growth rate of farmed organisms, but also effectively reduce farming costs. It is an indispensable technical means for modern aquaculture.

[0003] A common physical filtration method is to filter out large particles of impurities through a filter.

[0004] The existing patent (publication number: CN110292808A) discloses a water purification device for aquaculture, which belongs to the technical field of water purification devices. A water purification device for aquaculture includes a filter box and a sedimentation tank, wherein the filter box is fixedly connected to the sedimentation tank, and the filter box is provided with a water inlet and a water outlet, wherein an impeller is rotatably connected in the water inlet, and a filter screen is rotatably connected to the filter box, wherein the impeller is connected to the filter screen, and wherein a first baffle and a second baffle are slidably connected to the filter box, wherein the first baffle and the second baffle are connected via a connecting plate, wherein an end of the connecting plate away from the filter screen is fixedly connected to a first spring, and an end of the first spring away from the connecting plate is fixedly connected to the filter box, and a closing valve is slidably connected to the first baffle. In the above-mentioned device, the filter screen needs to be replaced manually after being blocked, resulting in a long interruption of the water flow, which affects the stability of the aquaculture water quality, and the cleaning of the filter screen depends on manual disassembly and cleaning, which has high maintenance cost and low efficiency, and is prone to excessive blockage and damage of the filter screen due to untimely maintenance.

[0005] In view of this, we propose a filtering device for an aquaculture water inlet pipe and a method of use. Summary of the invention

[0006] The object of the present invention is to provide a filtering device for an aquaculture water inlet pipe and a method of use, so as to solve the problem of the existing aquaculture water inlet pipe proposed in the above background technology, that the filter screen is blocked and replaced, resulting in a long interruption of water flow, and relies on manual disassembly and cleaning. In order to achieve the above object, the present invention provides the following technical solutions: a filtering device for an aquaculture water inlet pipe, comprising a device housing, the inner surface of the device housing is fixedly connected to a front housing, the inner surface of the device housing is fixedly connected to an intermediate housing, the outer surface of the device housing is fixedly connected to an outer support frame, the inner surface of the device housing is provided with a metering switching mechanism, the inner surface of the device housing is provided with a driving and clearing mechanism, the outer surface of the driving and clearing mechanism is provided with a linkage brushing mechanism, the outer surface of the front housing is fixedly connected to an input pipe, and the outer surface of the intermediate housing is fixedly connected to an output pipe; The inner surface of the front shell is provided with an inclined groove, the inner surface of the middle shell is rotatably connected to the rear turntable, the outer surface of the rear turntable is provided with a rear hole, the inner surface of the outer support frame is slidably connected to the cache box, and the outer surface of the output pipe is fixedly connected to the inner support frame.

[0007] Preferably, the number of the rear holes is two, and the two rear holes are symmetrically distributed with the central axis of the rear turntable as the symmetry axis, the number of the cache boxes is two, and the two cache boxes are symmetrically distributed with the central axis of the front shell as the symmetry axis, and the cache boxes are slidably connected to the inclined groove.

[0008] Preferably, the metering switching mechanism includes a front baffle, which is fixedly connected to the inner surface of the device shell, an outer surface of the front baffle is provided with an extrusion groove, and an outer surface of the extrusion groove is provided with a front hole, the inner surface of the front baffle is rotatably connected to a driving main shaft, the outer surface of the driving main shaft is fixedly connected to an elastic column, the other end of the driving main shaft is fixedly connected to an output tooth groove, the outer surface of the driving main shaft is rotatably connected to a mounting turntable, the inner surface of the mounting turntable is slidably connected to a filter mounting cylinder, the outer surface of the filter mounting cylinder is sleeved with an extrusion spring, and the inner surface of the filter mounting cylinder is fixedly connected to a filter net.

[0009] Preferably, the lower half of the extrusion groove is an inclined surface, the number of the front holes is two, and the two front holes are symmetrically distributed with the central axis of the front baffle as the symmetry axis, the elastic column is distributed in a ring around the driving main shaft, the other end of the elastic column is fixedly connected to the mounting turntable, the other end of the driving main shaft is rotatably connected to the inner support frame, the number of the filter mounting cylinders is two, and the two filter mounting cylinders are symmetrically distributed with the central axis of the mounting turntable as the symmetry axis, the filter mounting cylinder passes through the mounting turntable, the two ends of the filter mounting cylinder are respectively slidably connected to the front hole and the rear hole, the two ends of the extrusion spring are respectively fixedly connected to the filter mounting cylinder and the rear turntable, and the input pipe and the output pipe are colinear with the axis of the front hole at the bottom.

[0010] Preferably, the driving and clearing mechanism includes an inner mounting cylinder, the inner mounting cylinder is fixedly connected to the inner surface of the inner support frame, one end of the inner mounting cylinder is fixedly connected to an output nozzle, the inner surface of the inner mounting cylinder is fixedly connected to an output groove, the inner surface of the output groove is slidably connected to an output baffle, the inner surface of the inner mounting cylinder is fixedly connected to an input groove, the inner surface of the input groove is slidably connected to an input baffle, the top surface of the inner mounting cylinder is fixedly connected to a driving cylinder, the outer surface of the driving cylinder is fixedly connected to an extrusion side plate, the output end of the driving cylinder is fixedly connected to a linear rod, the inner surface of the linear rod is slidably connected to a pulling block, the outer surface of the pulling block is fixedly connected to a pulling spring, the inner surface of the inner mounting cylinder is fixedly connected to an inner control The control cylinder has a path groove on the inner surface of the inner control cylinder, and a force storage spring is slidably connected to the inner surface of the inner control cylinder, and a rotating inner seat is slidably connected to the inner surface of the rotating inner seat, and a path contact block is slidably connected to the outer surface of the path contact block. The outer surface of the path contact block is fixedly connected to a contact block spring, one end of the inner control cylinder is rotatably connected to a rotating base, one end of the rotating base is fixedly connected to a rotating linkage column, the other end of the rotating base is fixedly connected to an input tooth groove, and a connecting chain is sleeved on the outer surface of the input tooth groove, one end of the rotating base is fixedly connected to an output rod, and one end of the output rod is rotatably connected to a push-pull block, the top surface of the push-pull block is fixedly connected to a connecting block, and the outer surface of the push-pull block is fixedly connected to a piston rod.

[0011] Preferably, the output nozzle is colinear with the axis of the front hole at the top, the number of the input slots and the input baffles are four, and the four input slots and the input baffles are distributed in a ring around the inner mounting cylinder, the pulling block is slidably connected to the outer surface of the extrusion side plate, the other end of the pulling spring is fixedly connected to the inner surface of the linear rod, the pulling block is slidably connected to the outer surface of the connecting block, the path slot is slidably connected to the path contact block, the other end of the contact block spring is fixedly connected to the inner surface of the rotating inner seat, the rotating linkage column passes through the rotating inner seat and the output rod and is slidably connected to the inner wall thereof, the other end of the connecting chain is sleeved on the outer surface of the output tooth groove, the outer surface of the connecting block is provided with an oblique groove, the piston rod is slidably connected to the inner surface of the inner mounting cylinder, and the push-pull block passes through the inner mounting cylinder and is slidably connected to the inner wall thereof.

[0012] Preferably, the linked brushing mechanism includes a driven connecting ring, the driven connecting ring is fixedly connected to the outer surface of the connecting block, the top surface of the driven connecting ring is fixedly connected to a pushing connecting plate, the outer surface of the pushing connecting plate is fixedly connected to a pushing connecting rod, the other end of the pushing connecting rod is fixedly connected to a push-pull plate, the inner surface of the push-pull plate is fixedly connected to a contact ball head, the inner surface of the front shell is fixedly connected to an inner mounting plate, the inner surface of the inner mounting plate is slidably connected to a sliding sleeve, the inner surface of the sliding sleeve is rotatably connected to an inner rotating cylinder, the outer surface of the inner rotating cylinder is provided with a cam groove, and one end of the inner rotating cylinder is fixedly connected to an adhesive brush head.

[0013] Preferably, the driven connecting ring is slidably connected to the outer surface of the inner mounting cylinder, the inner surface of the push-pull plate is slidably connected to the inner rotating cylinder, the contact ball head is slidably connected to the cam groove, and the adhesive brush head is slidably connected to the outer surface of the filter.

[0014] A method for using a filtering device for an aquaculture water inlet pipe comprises the following steps: S1, the input pipe is connected to the water source input end, the output pipe is connected to the aquaculture water inlet pipe, the water flows into the filter installation cylinder through the input pipe and the front hole, and after being filtered by the filter screen, it enters the output pipe through the rear hole, and the filtered water is output; S2. The driving cylinder reciprocates and extends, and during the extension process, it drives the linear rod forward until the inclined surface of the pulling block contacts the inclined surface of the connecting block. The pulling block is pressed into the inside of the linear rod and extends out after detaching from the connecting block. At this time, the driving cylinder retracts, and the linear rod pulls the connecting block through the pulling block. While the pulling block retreats, it pushes the output rod and the rotating inner seat to move in the inner mounting cylinder. At this time, the path contact block contacts the straight line segment in the path groove, only generating direct motion and compressing the pulling spring, but at this time the connecting block is restricted by the pulling block, and the pulling spring cannot be reset until the pulling block contacts the extrusion side plate and is gradually pressed into the inside of the linear rod and no longer contacts the connecting block. At this time, the path contact block is at the intersection of the straight line segment and the oblique line segment of the path groove, and the pulling spring instantly resets and pushes the rotating inner seat. The path contact block can only move from the oblique line segment at this time. The inner seat moves upward until it is at the intersection of the oblique line segment and the straight line segment on the other side again, driving the rotating inner seat to rotate while being pushed. The rotation of the rotating inner seat drives the rotating base to rotate through the rotating linkage column. Since the path groove is symmetrical, the oblique line segments on both sides intersect and are in opposite directions. In the previous movement on one side, it will switch to the straight line segment of the path groove on the other side. In this way, in the next movement, it will move forward from the oblique line segment on the other side. Since the oblique line segments on both sides of the path groove are in opposite directions, the rotation direction of the rotating inner seat is also opposite, realizing the effect of slowly retreating and moving straight and quickly advancing and rotating the rotating inner seat by reciprocating extension and contraction of the driving cylinder. Each rotation is 180 degrees and the direction is opposite to the previous one. The slow retreat and fast forward are used to trigger the driving cleaning mechanism and the linkage brushing mechanism, and the reciprocating rotation of retreat, straight forward and rotation is used to drive the metering switching mechanism. S3. The rotating base is driven by the rotating inner seat to realize reciprocating rotation, and the reciprocating rotation is transmitted to the driving spindle through the input tooth groove, the connecting chain and the output tooth groove. The reciprocating rotation of the driving spindle will drive the installation turntable to realize reciprocating rotation through the connection of the elastic column. However, the front end part of the filter installation cylinder on the installation turntable is embedded in the front hole of the front baffle, and the front baffle is fixed. At this time, the driving spindle cannot rotate the installation turntable and can only twist the elastic column to store the rotation and restore it at the next reverse rotation. The filter screen in the filter installation cylinder will continue to filter while filtering. Under the impact of water flow, since there are a large number of filter holes on the filter net, the water flow will directly pass through the filter net to generate a small thrust. When the filter net is contaminated with too many impurities, resulting in blockage of the filter holes or a large obstacle, the thrust of the water flow becomes larger, and the filter net and the filter installation cylinder will be pushed backward from the front hole by the water flow and compress the extrusion spring until the filter installation cylinder is no longer in contact with the front hole, and the installation turntable will not be restricted by the front baffle to rotate. At this time, the reciprocating rotation of the driving spindle will drive the installation turntable to rotate 180 degrees, and the top filter installation cylinder and the bottom filter installation cylinder will be pushed backward from the front hole and compressed. The filter installation cylinder is switched. During the rotating switching process, the filter installation cylinder will move in the extrusion groove. Since the filter installation cylinder will not be affected by the impact of the water flow during the rotating switching process, the extrusion spring will drive the extrusion spring to reset until it contacts the front hole at the top. The front hole and the extrusion groove at the top are both backward. At this time, the filter installation cylinder cannot enter the front hole, and after being cleaned by the driving cleaning mechanism and the linked brushing mechanism, it is used for the next switching. The filter installation cylinder originally at the top will also pass through the extrusion groove. When it contacts the inclined extrusion groove at the lower half, the filter installation cylinder will be pressed in and compress the extrusion spring until it contacts the front hole at the bottom. The extrusion spring resets, the front hole and the extrusion groove at the bottom are forward, and the filter installation cylinder will be embedded in the front hole again to achieve a switching. Since the rotating inner seat will drive the driving spindle to rotate quickly, and the torsional reset of the elastic column is also fast, the rotation of the installation turntable is also fast, so that the filter installation cylinder can be quickly switched, the flow interruption time can be reduced, and it can be switched according to the pollution condition of the filter screen to prevent the filter screen from being replaced too early or too late. S4, rotating the inner seat to slowly retreat and fast forward, first drive the push-pull block and the piston rod to move through the output rod, the output baffle in the inner mounting tube is installed on the outside of the output slot to form a one-way valve that can only output, and the input baffle is installed on the inside of the input slot to form a one-way valve that can only input. When the piston rod slowly retreats, the airflow is slowly input from the input slot, and when the piston rod quickly advances, the gas is quickly output from the output slot and output to the top filter mounting tube through the output nozzle. Due to the fast output and after passing through the output nozzle, the airflow speed is amplified to blow out the impurity particles on the filter screen in the top filter mounting tube, and the push-pull block and the connecting block also drive the driven connecting ring to slowly retreat and fast forward, and drive the driven connecting ring, the push connecting plate, the push connecting rod and the push-pull plate to move. The movement of the push-pull plate During the process, since the friction between the contact ball head and the cam groove is greater than the friction between the sliding sleeve and the inner mounting plate, the sliding sleeve will be driven to move in the inner mounting plate first. When the push-pull plate slowly retreats, the sliding sleeve is pulled backwards until it cannot be pulled anymore, and the adhesion brush head contacts the filter screen. At this time, the push-pull plate continues to slowly retreat, which will drive the inner rotating cylinder and the adhesion brush head to rotate slowly through the action of the contact ball head and the cam groove, and adhere to the impurities on the filter screen. When the push-pull plate moves forward quickly, the sliding sleeve will be pushed out first, and the adhesion brush head will move to the outside of the filter mounting cylinder, and also rotate rapidly under the action of the contact ball head and the cam groove, throwing the adhered impurities into the front outer shell, and the impurities slide into the cache box through the inclined groove, thereby cleaning the top filter mounting cylinder and using it for the next output switching.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, through the setting of the metering switching mechanism, when the filter screen is clogged by impurities and the thrust of the water flow increases, the top and bottom filter mounting cylinders are automatically switched through the pressure change of the water flow, so as to realize the alternating use of the filter screen, reduce the water flow interruption caused by the clogging of the filter screen, avoid the long-term use of a single filter screen, and reduce the risk of damage to the filter screen due to excessive clogging. The switched filter screen can be cleaned and the filtering performance can be restored to ensure the stability of the filtering effect.

[0016] In the present invention, by driving the setting of the cleaning mechanism, the cylinder and the pulling block are used to realize the working process of straight forward and reverse rotation and high-speed forward and reverse rotation, and the metering switching mechanism is driven to switch the filter. By high-speed forward and reverse rotation and the use of elastic columns to store force, the metering switching mechanism can be quickly switched, thereby reducing the time of water flow interruption and ensuring that the filter is in good working condition.

[0017] In the present invention, by driving the cleaning mechanism and the linked brushing mechanism together, the cylinder and the pulling block are used to realize the slow-retract and fast-forward working process, drive the metering switching mechanism to switch the filter, and slowly retract and fast-forward drive its own airflow injection and the linked brushing mechanism for cleaning. The impurity particles on the surface of the filter are blown out by the high-speed injection of the airflow to prevent the filter from being blocked due to the accumulation of impurities. There is no need for manual frequent disassembly and cleaning of the filter, which reduces the maintenance cost. Impurities are automatically removed and collected in the cache box to prevent impurities from re-entering the water flow, thereby further ensuring the water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic side view of the internal structure of the present invention; Figure 2 It is a schematic side view of the overall structure of the present invention; Figure 3 It is a schematic diagram of the structure of the front housing, the inclined slot, the outer support frame, and the cache box cooperating with each other in the present invention; Figure 4 It is a schematic diagram of the structure of the front housing, the metering switching mechanism, and the rear turntable cooperating with each other in the present invention; Figure 5 It is a schematic diagram of the structure of the various components of the metering switching mechanism of the present invention cooperating with each other; Figure 6 It is a schematic diagram of the structure in which the rear hole, the front hole and the filter installation cylinder cooperate with each other in the present invention; Figure 7 This is a schematic diagram of the structure of the filter installation cylinder and the filter screen cooperating with each other in the present invention; Figure 8 It is a schematic diagram of the structure of the mutual cooperation of the components of the driving and clearing mechanism of the present invention; Fig. 9 It is an exploded view of the internal structure of the inner installation cylinder of the present invention; Fig.10 It is a schematic diagram of the structure of the driving cylinder, the extrusion side plate, the linear rod, the pulling block and the connecting block cooperating with each other in the present invention; Fig.11 It is a schematic diagram of the coordination structure of the internal structure of the inner control cylinder of the present invention; Fig.12 This is a schematic diagram of the structure of the inner control cylinder and the path groove cooperating with each other in the present invention; Fig.13 It is a schematic diagram of the structure of the rotating inner seat, the path contact block and the path groove cooperating with each other in the present invention; Fig.14 It is a schematic diagram of the structure of the various components of the linkage brushing mechanism of the present invention cooperating with each other; Fig.15 It is a schematic diagram of the structure of the adhesive brush head and the filter screen cooperating with each other in the present invention.

[0019] In the figure: 1. device housing; 2. front housing; 21. inclined slot; 3. middle housing; 31. rear turntable; 311. rear hole; 4. outer support frame; 41. cache box; 5. metering switching mechanism; 51. front baffle; 52. extrusion slot; 521. front hole; 53. driving spindle; 531. elastic column; 532. output tooth groove; 54. mounting turntable; 55. filter mounting cylinder; 551. extrusion spring; 552. filter screen; 6. driving cleaning mechanism; 61. inner mounting cylinder; 611. output nozzle; 612. output slot; 6121. output baffle; 613. input slot; 6131. ​​input baffle; 62. driving cylinder; 621. extrusion side plate; 63. linear rod; 631. pulling block; 632. pulling dynamic spring; 64, inner control cylinder; 641, path groove; 642, storage spring; 643, rotating inner seat; 6431, path contact block; 6432, contact block spring; 644, rotating base; 6441, rotating linkage column; 6442, input tooth groove; 6443, connecting chain; 65, output rod; 651, push-pull block; 6511, connecting block; 652, piston rod; 7, linkage brushing mechanism; 71, driven connecting ring; 72, push connecting plate; 721, push connecting rod; 73, push-pull plate; 731, contact ball head; 74, inner mounting plate; 75, sliding sleeve; 751, inner rotating cylinder; 7511, cam groove; 752, adhesive brush head; 9, input pipe; 91, output pipe; 911, inner support frame. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figures 1 to 15The present invention provides a technical solution: a filtering device for an aquaculture water inlet pipe, comprising a device shell 1, a front shell 2 is fixedly connected to the inner surface of the device shell 1, an intermediate shell 3 is fixedly connected to the inner surface of the device shell 1, an outer support frame 4 is fixedly connected to the outer surface of the device shell 1, a metering switching mechanism 5 is arranged on the inner surface of the device shell 1, a driving cleaning mechanism 6 is arranged on the inner surface of the device shell 1, a linkage brushing mechanism 7 is arranged on the outer surface of the driving cleaning mechanism 6, an input pipe 9 is fixedly connected to the outer surface of the front shell 2, an output pipe 91 is fixedly connected to the outer surface of the intermediate shell 3, the device shell 1, the front shell 2 and the intermediate shell 3 are used to install and protect internal components, a buffer box 41 is installed on the outer support frame 4 for storing impurity particles that are collected and affect clogging during filtration, and flanges are provided on the surfaces of the input pipe 9 and the output pipe 91 for connecting the input and output ends of the water flow; An inclined groove 21 is provided on the inner surface of the front shell 2, and a rear turntable 31 is rotatably connected to the inner surface of the middle shell 3. A rear hole 311 is provided on the outer surface of the rear turntable 31. The inner surface of the outer support frame 4 is slidably connected to the cache box 41, and the outer surface of the output pipe 91 is fixedly connected to the inner support frame 91. The inclined groove 21 consists of an arc surface and an inclined surface. When the linkage brushing mechanism 7 throws out the impurity particles, they will be guided from the inclined groove 21 and fall into the cache box 41 for collection. The rear turntable 31 and the rear hole 311 provide an installation position behind the filter mounting cylinder 55. The filter mounting cylinder 55 can slide in the rear hole 311, and the rear turntable 31 can rotate, thereby not affecting the rotation of the mounting turntable 54 and the filter mounting cylinder 55.

[0022] There are two rear holes 311, and the two rear holes 311 are symmetrically distributed with the central axis of the rear turntable 31 as the symmetry axis. There are two cache boxes 41, and the two cache boxes 41 are symmetrically distributed with the central axis of the front shell 2 as the symmetry axis. The cache boxes 41 are slidably connected to the inclined groove 21.

[0023] The metering switching mechanism 5 includes a front baffle 51, which is fixedly connected to the inner surface of the device housing 1, an extrusion groove 52 is provided on the outer surface of the front baffle 51, and a front hole 521 is provided on the outer surface of the extrusion groove 52. The inner surface of the front baffle 51 is rotatably connected to a driving spindle 53, and an elastic column 531 is fixedly connected to the outer surface of the driving spindle 53. The other end of the driving spindle 53 is fixedly connected to an output tooth groove 532. The outer surface of the driving spindle 53 is rotatably connected to a mounting turntable 54, and the inner surface of the mounting turntable 54 is slidably connected to a filter mounting cylinder 55. The outer surface of the filter mounting cylinder 55 is sleeved with an extrusion spring 551, and the inner surface of the filter mounting cylinder 55 is fixedly connected to a filter screen 552. Through the setting of the metering switching mechanism 5, during use, the extrusion groove 52 provided on the front baffle 51 provides a space for limiting the movement of the filter mounting cylinder 55. The filter installation cylinder 55 is blocked at the front end during the movement of the filter installation cylinder 55 on the extrusion groove 52 to prevent the collected impurity particles from falling. The front end 521 plays the role of clamping the filter installation cylinder 55, and the rotation can be controlled according to the blockage of the filter installation cylinder 55. The elastic column 531 can store the torsional force of the rotation of the drive spindle 53, and can be rotated and stored both clockwise and counterclockwise. If the installation turntable 54 can rotate, the drive spindle 53 directly pulls the installation turntable 54 to rotate 180 degrees through the elastic column 531. If it cannot rotate, the elastic column 531 is twisted into a spiral shape. Before the next rotation of the drive spindle 53, if the filter installation cylinder 55 is pushed in by the water flow and no longer restricts the installation turntable 54, the elastic column 531 is reset and drives the installation turntable 54 to rotate 180 degrees.

[0024] The lower half of the extrusion groove 52 is an inclined surface, the number of the front holes 521 is two, and the two front holes 521 are symmetrically distributed with the central axis of the front baffle 51 as the symmetry axis, the elastic column 531 is annularly distributed around the driving main shaft 53, the other end of the elastic column 531 is fixedly connected to the mounting turntable 54, the other end of the driving main shaft 53 is rotatably connected to the inner support frame 911, the number of the filter mounting cylinder 55 is two, and the two filter mounting cylinders 55 are symmetrically distributed with the central axis of the mounting turntable 54 as the symmetry axis, and the filter mounting cylinder 55 penetrates the mounting turntable 54. The two ends of the filter installation cylinder 55 are respectively slidably connected to the front hole 521 and the rear hole 311, and the two ends of the extrusion spring 551 are respectively fixedly connected to the filter installation cylinder 55 and the rear turntable 31. The input pipe 9 and the output pipe 91 are colinear with the axis of the front hole 521 at the bottom. The upper half of the extrusion groove 52 is farthest back and will not jam the filter installation cylinder 55. The lower half gradually moves forward to jam the filter installation cylinder 55. The upper and lower front holes 521 correspond to the two filter installation cylinders 55 to be switched, and the bottom filter and the top are used for cleaning and next use.

[0025] The driving cleaning mechanism 6 includes an inner mounting cylinder 61, which is fixedly connected to the inner surface of the inner support frame 911, one end of the inner mounting cylinder 61 is fixedly connected to an output nozzle 611, the inner surface of the inner mounting cylinder 61 is fixedly connected to an output groove 612, the inner surface of the output groove 612 is slidably connected to an output baffle 6121, the inner surface of the inner mounting cylinder 61 is fixedly connected to an input groove 613, the inner surface of the input groove 613 is slidably connected to an input baffle 6131, the top surface of the inner mounting cylinder 61 is fixedly connected to a driving cylinder 62, the outer surface of the driving cylinder 62 is fixedly connected to an extrusion side plate 621, and the output end of the driving cylinder 62 is fixedly connected to a straight The inner surface of the linear rod 63 is slidably connected with a pulling block 631, and the outer surface of the pulling block 631 is fixedly connected with a pulling spring 632. The inner surface of the inner mounting cylinder 61 is fixedly connected with an inner control cylinder 64. The inner surface of the inner control cylinder 64 is provided with a path groove 641. The inner surface of the inner control cylinder 64 is slidably connected with a storage spring 642. The inner surface of the inner control cylinder 64 is slidably connected with a rotating inner seat 643. The inner surface of the rotating inner seat 643 is slidably connected with a path contact block 6431. The outer surface of the path contact block 6431 is fixedly connected with a contact block spring 6432. One end of the inner control cylinder 64 is rotatably connected with a rotating base 644. One end of the movable base 644 is fixedly connected to a rotating linkage column 6441, the other end of the rotating base 644 is fixedly connected to an input tooth groove 6442, the outer surface of the input tooth groove 6442 is sleeved with a connecting chain 6443, one end of the rotating base 644 is fixedly connected to an output rod 65, one end of the output rod 65 is rotatably connected to a push-pull block 651, the top surface of the push-pull block 651 is fixedly connected to a connecting block 6511, and the outer surface of the push-pull block 651 is fixedly connected to a piston rod 652. By driving the setting of the cleaning mechanism 6, during use, the inner mounting cylinder 61 is fixed and plays the effect of changing the volume of input and output air, and the inner control cylinder 64 is used to control the piston rod 6 52's telescopic and reciprocating rotation of the rotating base 644, the driving cylinder 62 drives the pulling block 631 to only play a pulling role, and the pushing is controlled by the storage spring 642 to achieve slow retreat and fast forward, and the path groove 641 in the inner control cylinder 64 achieves the effect of reciprocating rotation. When slowly retreating, the piston rod 652 retreats to the inner mounting cylinder 61 to inhale air, and the four air intake input grooves 613 are on the outside, and the air at the filter mounting cylinder 55 will not be inhaled to prevent impurity particles from sticking to the surface of the filter screen 552. When fast forwarding, the gas is quickly pushed out from the output groove 612 and passes through a large number of small holes on the output nozzle 611, reducing the flow cross-section and increasing the flow rate, generating a high-speed airflow to blow out the impurity particles on the surface of the filter screen 552.

[0026] The output nozzle 611 is colinear with the axis of the front hole 521 at the top, the number of the input slots 613 and the input baffles 6131 are both four, and the four input slots 613 and the input baffles 6131 are annularly distributed around the inner mounting cylinder 61, the pulling block 631 is slidably connected to the outer surface of the extrusion side plate 621, the other end of the pulling spring 632 is fixedly connected to the inner surface of the linear rod 63, the pulling block 631 is slidably connected to the outer surface of the connecting block 6511, the path slot 641 is slidably connected to the path contact block 6431, and the contact block spring 632 is fixedly connected to the inner surface of the linear rod 63, The other end of 432 is fixedly connected to the inner surface of the rotating inner seat 643, the rotating linkage column 6441 penetrates the rotating inner seat 643 and the output rod 65 and is slidably connected to the inner wall thereof, the other end of the connecting chain 6443 is sleeved on the outer surface of the output tooth groove 532, the outer surface of the connecting block 6511 is provided with an oblique groove, the piston rod 652 is slidably connected to the inner surface of the inner mounting cylinder 61, the push-pull block 651 penetrates the inner mounting cylinder 61 and is slidably connected to the inner wall thereof, and the path groove 641 inside the inner control cylinder 64 is composed of two straight line segments on both sides and two intermediate segments. The path contact block 6431 is composed of oblique line segments, which are cross-spiral shapes, and different slopes and blocks are set on the path. When the path contact block 6431 moves, it is used to control the moving path. The intersection of the straight line segment and the oblique line segment when the path contact block 6431 is at the front is set as the initial position. At this time, the path contact block 6431 is blocked by the high height to the oblique line segment and can only take the straight line segment. The rotating inner seat 643 moves in a straight line. The straight line segment is an inclined surface. The path contact block 6431 will be gradually pressed into the interior of the rotating inner seat 643 until it breaks away from the inclined surface and falls into the straight line segment and the oblique line segment at the rear. At the intersection of the line segments, the straight line segment is too high and is blocked, so it can only move along the oblique line segment. The oblique line segment is spiral and equivalent to a cylindrical cam. The path contact block 6431 will drive the rotating inner seat 643 to rotate during the movement, and move to the straight line segment of the path groove 641 on the other side. At this time, the oblique line segment is opposite to the previous oblique line segment, and the rotation direction of the rotating inner seat 643 is also opposite. Moreover, since the forward movement in the oblique line segment is driven by the reset speed of the storage spring 642, the rapid rotation of the rotating inner seat 643 is achieved to reduce the time for switching the filter mounting cylinder 55.

[0027] The linkage brushing mechanism 7 includes a driven connecting ring 71, which is fixedly connected to the outer surface of the connecting block 6511, a push connecting plate 72 is fixedly connected to the top surface of the driven connecting ring 71, a push connecting rod 721 is fixedly connected to the outer surface of the push connecting plate 72, a push-pull plate 73 is fixedly connected to the other end of the push-pull plate 73, a contact ball head 731 is fixedly connected to the inner surface of the push-pull plate 73, an inner mounting plate 74 is fixedly connected to the inner surface of the inner mounting plate 74, a sliding sleeve 75 is slidably connected to the inner surface of the sliding sleeve 75, and an inner rotating cylinder 751 is rotatably connected to the inner surface of the sliding sleeve 75 A cam groove 7511 is provided on the outer surface of the inner rotating cylinder 751, and an adhesive brush head 752 is fixedly connected to one end of the inner rotating cylinder 751. Through the setting of the linkage brushing mechanism 7, during use, the piston rod 652 and the inner mounting cylinder 61 will drive the linkage brushing mechanism 7 to play a cleaning role while outputting airflow. When the inner mounting cylinder 61 inhales, the piston rod 652 is pulled backward, driving the sliding sleeve 75 and the inner rotating cylinder 751 to approach, and making the adhesive brush head 752 stick to the surface of the filter screen 552 and rotate. When the inner mounting cylinder 61 discharges air, the piston rod 652 is pushed forward, and the adhesive brush head 752 will separate from the filter screen 552 and be quickly thrown away.

[0028] The driven connecting ring 71 is slidably connected to the outer surface of the inner mounting cylinder 61, the inner surface of the push-pull plate 73 is slidably connected to the inner rotating cylinder 751, the contact ball head 731 is slidably connected to the cam groove 7511, and the adhesive brush head 752 is slidably connected to the outer surface of the filter screen 552.

[0029] In this embodiment, Figure 1 , Figure 2 As shown, the device housing 1, the front housing 2 and the middle housing 3 are used to install and protect the internal components; In this embodiment, Figure 3 As shown, the inclined groove 21 is composed of an arc surface and an inclined surface. When the linkage brushing mechanism 7 throws out the impurity particles, they will be guided from the inclined groove 21 and fall into the buffer box 41 for collection; In this embodiment, Figure 4 , Figure 5 , Figure 6 As shown, the two ends of the filter installation cylinder 55 are respectively slidably connected with the front hole 521 and the rear hole 311. By controlling the state of the filter installation cylinder 55 being stuck in the front hole 521, the rotation of the installation turntable 54 is controlled. When the driving main shaft 53 rotates, the filter installation cylinder 55 can be driven to rotate for switching. When it cannot rotate, the elastic column 531 can store the torsional force of the driving main shaft 53. In this embodiment, Figure 7As shown, the filter screen 552 is installed inside the filter installation cylinder 55. After the water flows through, foreign particles and large-sized garbage will accumulate in front of the filter screen 552 and will be output to the inclined groove 21 and the buffer box 41 during the cleaning process; In this embodiment, Figure 8 , Fig.10 As shown, the driving cylinder 62 drives the pulling block 631 to only play a pulling role, and the pushing is controlled by the storage spring 642 to achieve slow retreat and fast forward; In this embodiment, Fig. 9 As shown, the inner installation cylinder 61 controls the piston rod 652 to change the volume of the input and output air, and the output groove 612 and the input groove 613 are used to control the direction of gas inlet and outlet; In this embodiment, Fig.11 , Fig.12 , Fig.13 As shown, the path groove 641 inside the inner control cylinder 64 is composed of straight line segments on both sides and two oblique line segments in the middle. The oblique line segments are in a cross-spiral shape, and different slopes and blocks are arranged on the path to control the moving path when the path contact block 6431 moves. In this embodiment, Fig.14 As shown, while the piston rod 652 and the inner mounting cylinder 61 output the airflow, they will drive the sliding sleeve 75 to move and the inner rotating cylinder 751 to rotate through the driven connecting ring 71, the pushing connecting plate 72, the pushing connecting rod 721 and the push-pull plate 73, thereby playing a cleaning role; In this embodiment, Fig.15 As shown, the adhesive brush head 752 contacts the filter 552 and rotates to adhere to the particulate matter on the filter 552.

[0030] A method for using a filtering device for an aquaculture water inlet pipe comprises the following steps: S1, the input pipe 9 is connected to the water source input end, the output pipe 91 is connected to the aquaculture water inlet pipe, the water flows through the input pipe 9 and the front hole 521 into the filter installation cylinder 55, after being filtered by the filter screen 552, it enters the output pipe 91 through the rear hole 311, and the filtered water is output; S2, the driving cylinder 62 reciprocates and extends, and during the extension process, it drives the linear rod 63 forward until the inclined surface of the pulling block 631 contacts the inclined surface of the connecting block 6511, and the pulling block 631 is pressed into the linear rod 63 and extends after being separated from the connecting block 6511. At this time, the driving cylinder 62 retracts, and the linear rod 63 pulls the connecting block 6511 through the pulling block 631. When the pulling block 631 retreats, it pushes the output rod 65 and the rotating inner seat 643 to move in the inner mounting tube 61. At this time, the path contact block 6431 contacts the straight line segment in the path groove 641, only direct motion is generated and the pulling spring 632 is compressed, but the connecting block 6511 is restricted by the pulling block 631 at this time, and the pulling spring 632 cannot be reset until the pulling block 631 contacts the extrusion side plate 621 and is gradually pressed into the direct-acting rod 63 and no longer contacts the connecting block 6511. At this time, the path contact block 6431 is at the intersection of the straight line segment and the oblique line segment of the path groove 641, and the pulling spring 632 is reset instantly. The inner seat 643 is pushed and the path contact block 6431 can only move forward from the oblique line segment at this time until it is at the intersection of the oblique line segment and the straight line segment on the other side again, driving the inner seat 643 to rotate while being pushed. The rotation of the inner seat 643 drives the rotating base 644 to rotate through the rotating linkage column 6441. Since the path groove 641 is symmetrical, the oblique line segments on both sides intersect and are in opposite directions. In the previous movement on one side, it will switch to the straight line segment of the path groove 641 on the other side. In this way, in the next movement, it will move forward from the oblique line segment on the other side. Since the oblique line segments on both sides of the path groove 641 are in opposite directions, the rotation direction of the inner seat 643 is also opposite, realizing the reciprocating extension and contraction of the driving cylinder 62, so that the inner seat 643 can slowly retreat and move straight and quickly move forward and rotate. Each rotation is 180 degrees and the direction is opposite to the previous one. The slow retreat and fast forward are used to trigger the driving cleaning mechanism 6 and the linkage brushing mechanism 7, and the reciprocating rotation of retreat, straight forward and rotation is used to drive the metering switching mechanism 5. S3, the rotating base 644 is driven by the rotating inner seat 643 to realize reciprocating rotation, and the reciprocating rotation is transmitted to the driving main shaft 53 through the input tooth groove 6442, the connecting chain 6443 and the output tooth groove 532. The reciprocating rotation of the driving main shaft 53 will drive the installation turntable 54 to realize reciprocating rotation through the connection of the elastic column 531. However, the front end part of the filter installation cylinder 55 on the installation turntable 54 is embedded in the front hole 521 of the front baffle 51, and the front baffle 51 is fixed. At this time, the driving main shaft 53 cannot rotate the installation turntable 54, and the elastic column 531 can only be twisted to store the rotation, and it will be restored at the next reverse rotation. The filter screen 552 in the filter installation cylinder 55 The filter screen 552 is continuously impacted by the water flow during filtering. Since there are a large number of filter holes on the filter screen 552, the water flow will directly pass through the filter screen 552 to generate a small thrust. When there are too many impurities on the filter screen 552, causing the filter holes to be blocked or there are large obstacles, the thrust of the water flow becomes larger, and the filter screen 552 and the filter installation cylinder 55 will be pushed backward from the front hole 521 by the water flow and compress the extrusion spring 551 until the filter installation cylinder 55 is no longer in contact with the front hole 521, and the installation turntable 54 will not be restricted by the front baffle 51. At this time, the reciprocating rotation of the driving main shaft 53 will drive the installation turntable 54 to rotate 180 degrees, and the top filter installation cylinder 55 and the bottom filter installation cylinder 55 will be pushed backward from the front hole 521. The filter installation cylinder 55 at the top is switched. During the rotation switching process, the filter installation cylinder 55 will move in the extrusion groove 52. Since the filter installation cylinder 55 will not be affected by the impact of the water flow during the rotation switching process, the extrusion spring 551 will drive the extrusion spring 551 to reset until it contacts the front hole 521 at the top. The front hole 521 at the top and the extrusion groove 52 are both backward. At this time, the filter installation cylinder 55 cannot enter the front hole 521, and after being cleaned by the driving cleaning mechanism 6 and the linked brushing mechanism 7, it is used for the next switching. The filter installation cylinder 55 originally at the top will also pass through the extrusion groove 52 and contact the inclined extrusion groove 52 at the lower half. When the filter installation cylinder 55 is in the groove 52, the filter installation cylinder 55 will be pressed in and the extrusion spring 551 will be compressed until it contacts the front hole 521 at the bottom, the extrusion spring 551 will reset, the front hole 521 at the bottom and the extrusion groove 52 will be moved forward, and the filter installation cylinder 55 will be embedded in the front hole 521 again to achieve a switch. Since the rotating inner seat 643 will drive the driving main shaft 53 to rotate quickly, and the torsional reset of the elastic column 531 is also fast, the rotation of the installation turntable 54 is also fast, so that the filter installation cylinder 55 can be quickly switched, the time of interruption can be reduced, and the filter can be switched according to the pollution condition of the filter 552 to prevent the filter 552 from being replaced too early or too late. S4, rotating the inner seat 643 to slowly retreat and fast forward, firstly, the output rod 65 drives the push-pull block 651 and the piston rod 652 to move, the output baffle 6121 in the inner mounting tube 61 is installed on the outside of the output groove 612 to form a one-way valve that can only output, and the input baffle 6131 is installed in the inside of the input groove 613 to form a one-way valve that can only input, when the piston rod 652 slowly retreats, the air flow is slowly input from the input groove 613, when the piston rod 652 quickly advances, the gas is quickly output from the output groove 612, and output to the top filter mounting tube 55 through the output nozzle 611, because it is a fast output and after passing through the output nozzle 611, the air flow speed is amplified, and the impurity particles on the filter screen 552 in the top filter mounting tube 55 are blown out, the push-pull block 651 and the connecting block 6511 also drive the driven connecting ring 71 to slowly retreat and fast forward, and drive the driven connecting ring 71, the push connecting plate 72, the push connecting rod 721 and the push-pull plate 73 to move, and the push-pull plate 73 moves During the movement, since the friction between the contact ball head 731 and the cam groove 7511 is greater than the friction between the sliding sleeve 75 and the inner mounting plate 74, the sliding sleeve 75 will be driven to move in the inner mounting plate 74 first. When the push-pull plate 73 slowly retreats, the sliding sleeve 75 is pulled backward until it cannot be pulled anymore, and the adhesion brush head 752 contacts the filter screen 552. At this time, the push-pull plate 73 continues to slowly retreat, which will drive the inner rotating cylinder 751 and the adhesion brush head 752 to contact the filter screen 552 through the action of the contact ball head 731 and the cam groove 7511. The brush head 752 rotates slowly and adheres to the impurities on the filter screen 552. When the push-pull plate 73 moves forward quickly, it will first push out the sliding sleeve 75, and the adhered brush head 752 will move to the outside of the filter mounting cylinder 55, and also rotate quickly under the action of the contact ball head 731 and the cam groove 7511, so as to throw the adhered impurities into the front housing 2. The impurities slide into the cache box 41 through the inclined groove 21, thereby cleaning the top filter mounting cylinder 55 and being used for the next output switching.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A filtering device for an aquaculture water inlet pipe, comprising a device housing (1), characterized in that: The inner surface of the device housing (1) is fixedly connected to a front housing (2), the inner surface of the device housing (1) is fixedly connected to an intermediate housing (3), the outer surface of the device housing (1) is fixedly connected to an outer support frame (4), the inner surface of the device housing (1) is provided with a metering switching mechanism (5), the inner surface of the device housing (1) is provided with a driving cleaning mechanism (6), the outer surface of the driving cleaning mechanism (6) is provided with a linkage brushing mechanism (7), the outer surface of the front housing (2) is fixedly connected to an input pipe (9), and the outer surface of the intermediate housing (3) is fixedly connected to an output pipe (91); The inner surface of the front housing (2) is provided with an inclined groove (21), the inner surface of the intermediate housing (3) is rotatably connected to a rear turntable (31), the outer surface of the rear turntable (31) is provided with a rear hole (311), the inner surface of the outer support frame (4) is slidably connected to a buffer box (41), and the outer surface of the output pipe (91) is fixedly connected to an inner support frame (911); The metering switching mechanism (5) comprises a front baffle (51), the front baffle (51) being fixedly connected to the inner surface of the device housing (1), the outer surface of the front baffle (51) being provided with an extrusion groove (52), the outer surface of the extrusion groove (52) being provided with a front hole (521), the inner surface of the front baffle (51) being rotatably connected to a driving main shaft (53), the outer surface of the driving main shaft (53) being fixedly connected to an elastic column (531), the other end of the driving main shaft (53) being fixedly connected to an output tooth groove (532), the outer surface of the driving main shaft (53) being rotatably connected to a mounting turntable (54), the inner surface of the mounting turntable (54) being slidably connected to a filter mounting cylinder (55), the outer surface of the filter mounting cylinder (55) being sleeved with an extrusion spring (551), and the inner surface of the filter mounting cylinder (55) being fixedly connected to a filter screen (552).

2. The filtering device for an aquaculture water inlet pipe according to claim 1, characterized in that: The number of the rear holes (311) is two, and the two rear holes (311) are symmetrically distributed with the central axis of the rear turntable (31) as the symmetry axis; the number of the cache boxes (41) is two, and the two cache boxes (41) are symmetrically distributed with the central axis of the front housing (2) as the symmetry axis; the cache boxes (41) are slidably connected to the inclined groove (21).

3. The filtering device for an aquaculture water inlet pipe according to claim 1, characterized in that: The lower half of the extrusion groove (52) is an inclined surface, the number of the front holes (521) is two, and the two front holes (521) are symmetrically distributed with the central axis of the front baffle (51) as the symmetry axis, the elastic columns (531) are distributed in a ring around the driving main shaft (53), the other end of the elastic columns (531) is fixedly connected to the mounting turntable (54), the other end of the driving main shaft (53) is rotatably connected to the inner support frame (911), the number of the filter mounting cylinders (55) is two, and The two filter installation cylinders (55) are symmetrically distributed with the central axis of the installation turntable (54) as the symmetry axis. The filter installation cylinders (55) penetrate the installation turntable (54). The two ends of the filter installation cylinder (55) are respectively slidably connected to the front hole (521) and the rear hole (311). The two ends of the extrusion spring (551) are respectively fixedly connected to the filter installation cylinder (55) and the rear turntable (31). The input pipe (9) and the output pipe (91) are colinear with the axis of the front hole (521) at the bottom.

4. The filtering device for an aquaculture water inlet pipe according to claim 1, characterized in that: The driving cleaning mechanism (6) comprises an inner mounting tube (61), the inner mounting tube (61) being fixedly connected to the inner surface of the inner support frame (911), one end of the inner mounting tube (61) being fixedly connected to an output nozzle (611), the inner surface of the inner mounting tube (61) being fixedly connected to an output groove (612), the inner surface of the output groove (612) being slidably connected to an output baffle (6121), the inner surface of the inner mounting tube (61) being fixedly connected to an input groove (613), the inner surface of the input groove (613) being slidably connected to The top surface of the inner mounting cylinder (61) is fixedly connected to a driving cylinder (62), the outer surface of the driving cylinder (62) is fixedly connected to an extrusion side plate (621), the output end of the driving cylinder (62) is fixedly connected to a direct-acting rod (63), the inner surface of the direct-acting rod (63) is slidably connected to a pulling block (631), the outer surface of the pulling block (631) is fixedly connected to a pulling spring (632), the inner surface of the inner mounting cylinder (61) is fixedly connected to an inner control cylinder (64), and the inner control cylinder ( The inner surface of the inner control cylinder (64) is provided with a path groove (641), the inner surface of the inner control cylinder (64) is slidably connected to a force storage spring (642), the inner surface of the inner control cylinder (64) is slidably connected to a rotating inner seat (643), the inner surface of the rotating inner seat (643) is slidably connected to a path contact block (6431), the outer surface of the path contact block (6431) is fixedly connected to a contact block spring (6432), one end of the inner control cylinder (64) is rotatably connected to a rotating base (644), and one end of the rotating base (644) is A rotating linkage column (6441) is fixedly connected to the rotating base (644); the other end of the rotating base (644) is fixedly connected to an input tooth groove (6442); the outer surface of the input tooth groove (6442) is sleeved with a connecting chain (6443); one end of the rotating base (644) is fixedly connected to an output rod (65); one end of the output rod (65) is rotatably connected to a push-pull block (651); the top surface of the push-pull block (651) is fixedly connected to a connecting block (6511); and the outer surface of the push-pull block (651) is fixedly connected to a piston rod (652).

5. The filtering device for an aquaculture water inlet pipe according to claim 4, characterized in that: The output nozzle (611) is colinear with the axis of the front hole (521) at the top; the number of the input slots (613) and the input baffles (6131) are both four, and the four input slots (613) and the input baffles (6131) are distributed in an annular manner around the inner mounting cylinder (61); the pulling block (631) is slidably connected to the outer surface of the extrusion side plate (621); the other end of the pulling spring (632) is fixedly connected to the inner surface of the linear rod (63); the pulling block (631) is slidably connected to the outer surface of the connecting block (6511); the path slot (641) is connected to the path contact block ( The other end of the contact block spring (6432) is fixedly connected to the inner surface of the rotating inner seat (643), the rotating linkage column (6441) passes through the rotating inner seat (643) and the output rod (65) and is slidably connected to the inner wall thereof, the other end of the connecting chain (6443) is sleeved on the outer surface of the output tooth groove (532), the outer surface of the connecting block (6511) is provided with an oblique groove, the piston rod (652) is slidably connected to the inner surface of the inner mounting cylinder (61), and the push-pull block (651) passes through the inner mounting cylinder (61) and is slidably connected to the inner wall thereof.

6. The filtering device for an aquaculture water inlet pipe according to claim 1, characterized in that: The linkage brushing mechanism (7) comprises a driven connecting ring (71), the driven connecting ring (71) being fixedly connected to the outer surface of the connecting block (6511), the top surface of the driven connecting ring (71) being fixedly connected to a push connecting plate (72), the outer surface of the push connecting plate (72) being fixedly connected to a push connecting rod (721), the other end of the push connecting rod (721) being fixedly connected to a push-pull plate (73), the inner surface of the push-pull plate (73) being fixedly connected to a contact ball head (731), the inner surface of the front housing (2) being fixedly connected to an inner mounting plate (74), the inner surface of the inner mounting plate (74) being slidably connected to a sliding sleeve (75), the inner surface of the sliding sleeve (75) being rotatably connected to an inner rotating cylinder (751), the outer surface of the inner rotating cylinder (751) being provided with a cam groove (7511), and one end of the inner rotating cylinder (751) being fixedly connected to an adhesive brush head (752).

7. The filtering device for an aquaculture water inlet pipe according to claim 6, characterized in that: The driven connecting ring (71) is slidably connected to the outer surface of the inner mounting cylinder (61), the inner surface of the push-pull plate (73) is slidably connected to the inner rotating cylinder (751), the contact ball head (731) is slidably connected to the cam groove (7511), and the adhesive brush head (752) is slidably connected to the outer surface of the filter screen (552).

8. A method for using a filter device for an aquaculture water inlet pipe, using the filter device for an aquaculture water inlet pipe as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1, the input pipe (9) is connected to the input end of the water source, the output pipe (91) is connected to the aquaculture water inlet pipe, the water flows through the input pipe (9) and the front hole (521) into the filter installation cylinder (55), after being filtered by the filter screen (552), it enters the output pipe (91) through the rear hole (311), and the filtered water is output; S2, the driving cylinder (62) reciprocates and extends, and during the extension process, it drives the linear rod (63) forward until the inclined surface of the pulling block (631) contacts the inclined surface of the connecting block (6511), and the pulling block (631) is pressed into the interior of the linear rod (63) and extends after being separated from the connecting block (6511). At this time, the driving cylinder (62) retracts, and the linear rod (63) pulls the connecting block (6511) through the pulling block (631). When the pulling block (631) retreats, it pushes the output rod (65) and the rotating inner seat (643) installed inside The path contact block (6431) moves in the cylinder (61), and at this time, the path contact block (6431) contacts the straight line segment in the path groove (641), only generating direct motion and compressing the pulling spring (632), but at this time, the connecting block (6511) is restricted by the pulling block (631), and the pulling spring (632) cannot be reset until the pulling block (631) contacts the extrusion side plate (621) and is gradually pressed into the interior of the direct-acting rod (63) and no longer contacts the connecting block (6511). At this time, the path contact block (6431) is at the intersection of the straight line segment and the oblique line segment of the path groove (641). The pulling spring (632) is instantly reset and pushes the rotating inner seat (643). At this time, the path contact block (6431) can only move forward from the oblique line segment until it is at the intersection of the oblique line segment and the straight line segment on the other side again, driving the rotating inner seat (643) to rotate while being pushed. The rotation of the rotating inner seat (643) drives the rotating base (644) to rotate through the rotating linkage column (6441). Since the path groove (641) is symmetrical, the oblique line segments on both sides cross and are in opposite directions. During the previous movement on one side, it will switch to the path groove (641) on the other side. The inner seat (643) is located at the line segment, so that in the next movement, it will move forward from the oblique line segment on the other side. Since the oblique line segments on both sides of the path groove (641) are in opposite directions, the rotation direction of the rotating inner seat (643) is also opposite, so that the reciprocating extension and contraction of the driving cylinder (62) is used to achieve the effect of slowly retreating and moving straight and quickly advancing and rotating the rotating inner seat (643). Each rotation is 180 degrees and the direction is opposite to the previous rotation. The slow retreat and fast forward are used to trigger the driving cleaning mechanism (6) and the linkage brushing mechanism (7), and the reciprocating rotation of retreat, straight forward and rotation is used to drive the metering switching mechanism (5); S3, the rotating base (644) is driven by the rotating inner seat (643) to realize reciprocating rotation, and the reciprocating rotation is transmitted to the driving main shaft (53) through the input tooth groove (6442), the connecting chain (6443) and the output tooth groove (532). The reciprocating rotation of the driving main shaft (53) drives the installation turntable (54) to realize reciprocating rotation through the connection of the elastic column (531). However, the front end portion of the filter installation cylinder (55) on the installation turntable (54) is embedded in the front hole (521) of the front baffle (51), and the front baffle (51) is fixed. At this time, the driving main shaft (53) cannot rotate the installation turntable (54) and can only twist the elastic column (531) to store the rotation, and restore it when it rotates in the opposite direction next time. The filter in the filter installation cylinder (55) The net (552) will continue to be impacted by the water flow while filtering. Since there are a large number of filter holes on the filter net (552), the water flow will directly pass through the filter net (552) to generate a small thrust. When the filter net (552) is contaminated with too many impurities, resulting in clogging of the filter holes or a large obstruction, the thrust of the water flow becomes larger, and the filter net (552) and the filter installation cylinder (55) will be pushed backward from the front hole (521) by the water flow and compress the extrusion spring (551) until the filter installation cylinder (55) is no longer in contact with the front hole (521), and the installation turntable (54) is not restricted from rotating by the front baffle (51). At this time, the reciprocating rotation of the driving main shaft (53) will drive the installation turntable (54) to rotate 180 degrees, and the top filter installation cylinder (55) The filter installation cylinder (55) is switched with the filter installation cylinder (55) at the bottom. During the rotation switching process, the filter installation cylinder (55) moves in the extrusion groove (52). Since the filter installation cylinder (55) is not affected by the impact of the water flow during the rotation switching process, the extrusion spring (551) drives the extrusion spring (551) to reset until it contacts the front hole (521) at the top. The front hole (521) and the extrusion groove (52) at the top are both backward. At this time, the filter installation cylinder (55) cannot enter the front hole (521) and is cleaned by the driving cleaning mechanism (6) and the linkage brushing mechanism (7) before being used for the next switching. The filter installation cylinder (55) originally at the top will also pass through the extrusion groove (52) and contact the inclined extrusion groove (52) at the lower half. When the filter installation cylinder (55) is in the groove (52), the filter installation cylinder (55) is pressed in and the extrusion spring (551) is compressed until it contacts the front hole (521) at the bottom. The extrusion spring (551) is reset, the front hole (521) at the bottom and the extrusion groove (52) are moved forward, and the filter installation cylinder (55) is again embedded in the front hole (521), thereby realizing a one-time switching. Since the rotating inner seat (643) drives the driving main shaft (53) to rotate quickly, and the elastic column (531) is also quickly reversed and reset, the installation turntable (54) is also quickly rotated, thereby realizing a fast switching of the filter installation cylinder (55), reducing the time of flow interruption, and can switch according to the pollution condition of the filter screen (552), thereby preventing the filter screen (552) from being replaced too early or too late. S4. Rotate the inner seat (643) to slowly retreat and quickly advance. First, the output rod (65) drives the push-pull block (651) and the piston rod (652) to move. The output baffle (6121) in the inner mounting cylinder (61) is installed outside the output groove (612) to form a one-way valve that can only output. The input baffle (6131) is installed inside the input groove (613) to form a one-way valve that can only input. When the piston rod (652) slowly retreats, the air flow is slowly input from the input groove (613). When the piston rod (652) quickly advances, the gas flows out from the output groove (613). 612) is quickly output and output to the top filter installation cylinder (55) through the output nozzle (611). Due to the fast output and after passing through the output nozzle (611), the air flow speed is amplified, and the impurity particles on the filter screen (552) in the top filter installation cylinder (55) are blown out. The push-pull block (651) and the connecting block (6511) also drive the driven connecting ring (71) to slowly retreat and quickly advance, and drive the driven connecting ring (71), the push connecting plate (72), the push connecting rod (721) and the push-pull plate (73) to move. The push-pull plate (73) moves. During the movement, since the friction between the contact ball head (731) and the cam groove (7511) is greater than the friction between the sliding sleeve (75) and the inner mounting plate (74), the sliding sleeve (75) is first driven to move inside the inner mounting plate (74). When the push-pull plate (73) slowly retreats, the sliding sleeve (75) is pulled backward until it cannot be pulled any further, and the adhesive brush head (752) contacts the filter screen (552). At this time, the push-pull plate (73) continues to slowly retreat, driving the inner rotating cylinder (751) and the inner rotating cylinder (752) to move through the action of the contact ball head (731) and the cam groove (7511). The adhesion brush head (752) rotates slowly to adhere to the impurities on the filter screen (552). When the push-pull plate (73) moves forward quickly, the sliding sleeve (75) is first pushed out, and the adhesion brush head (752) moves to the outside of the filter installation cylinder (55). It also rotates quickly under the action of the contact ball head (731) and the cam groove (7511), and the adhered impurities are thrown out into the front housing (2). The impurities slide into the buffer box (41) through the inclined groove (21), thereby achieving the effect of cleaning the top filter installation cylinder (55) and being used for the next output switching.

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