A filtering device for an aquaculture water inlet pipe and its usage method

Abstract

The present invention relates to the technical field of aquaculture filtration, and specifically relates to a filtration device and a usage method for an inlet pipe of aquaculture, including a device housing. The inner surface of the device housing is fixedly connected with a front housing, the inner surface of the device housing is fixedly connected with an intermediate housing, the outer surface of the device housing is fixedly connected with an outer support frame, the inner surface of the device housing is provided with a metering and switching mechanism, the inner surface of the device housing is provided with a driving and cleaning mechanism, and the outer surface of the driving and cleaning mechanism is provided with a linkage brushing mechanism. The outer surface of the front housing is fixedly connected with an input pipe, and the outer surface of the intermediate housing is fixedly connected with an output pipe. When the filter screen is blocked by impurities and the water flow thrust increases, the filter screen is automatically switched through the pressure change of the water flow, realizing the alternate use of the filter screens, reducing the interruption of the water flow caused by the blockage of the filter screen, and avoiding the long-term use of a single filter screen.

Description

Technical Field

[0001] The present invention relates to the technical field of aquaculture filtration, and particularly to a filtration device and a usage method for an inlet pipe of aquaculture. Background Technique

[0002] In aquaculture, inlet filtration is a crucial link to ensure water quality and prevent diseases. Untreated water sources may carry pathogens, impurities, and harmful substances, posing a threat to the health of aquatic organisms. The filtration system usually includes physical filtration, chemical filtration, and biological filtration. Physical filtration removes large particulate impurities through screens, filter cotton, etc.; chemical filtration uses activated carbon, etc. to adsorb harmful substances; biological filtration relies on microorganisms to decompose organic matter and purify water quality. Regular maintenance of the filtration equipment to ensure its efficient operation is the basis for maintaining a good environment in the aquaculture water body. Scientific and reasonable inlet filtration measures can not only improve the survival rate and growth rate of aquaculture organisms but also effectively reduce aquaculture costs, and are an indispensable technical means in modern aquaculture.

[0003] Common physical filtration means are to filter out large particulate impurities through filters, etc.

[0004] The existing patent (publication number: CN110292808A) discloses an aquaculture water purification device, belonging to the technical field of water purification devices. An aquaculture water purification device includes a filtration tank and a sedimentation tank. The filtration tank is fixedly connected to the sedimentation tank. The filtration tank is provided with an inlet and an outlet. An impeller member is rotatably connected in the inlet. A filter net is rotatably connected to the filtration tank. The impeller member is connected to the filter net. A first baffle and a second baffle are slidably connected to the filtration tank. The first baffle and the second baffle are connected by a connecting plate. One end of the connecting plate away from the filter net is fixedly connected to a first spring. The other end of the first spring away from the connecting plate is fixedly connected to the filtration tank. A closing valve is slidably connected to the first baffle. In the above device, after the filter net is blocked, it needs to be manually replaced, resulting in a long interruption time of the water flow, affecting the stability of the aquaculture water quality. The cleaning of the filter net depends on manual disassembly and cleaning, with high maintenance costs and low efficiency, and it is easy to cause excessive blockage and damage of the filter net due to untimely maintenance.

[0005] In view of this, we propose a filtration device and a usage method for an inlet pipe of aquaculture. Summary of the Invention

[0006] The purpose of the present invention is to provide a filtering device and a usage method for an aquaculture water inlet pipe, so as to solve the problems in the above-mentioned background technology that in the existing aquaculture water inlet pipe, when the filter screen is blocked and replaced, the water flow interruption time is long, and it relies on manual disassembly and cleaning. To achieve the above purpose, the present invention provides the following technical solutions: A filtering device for an aquaculture water inlet pipe, including a device housing, the inner surface of the device housing is fixedly connected with a front housing, the inner surface of the device housing is fixedly connected with an intermediate housing, the outer surface of the device housing is fixedly connected with 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 cleaning mechanism, the outer surface of the driving cleaning mechanism is provided with a linkage brushing mechanism, the outer surface of the front housing is fixedly connected with an input pipe, and the outer surface of the intermediate housing is fixedly connected with an output pipe;

[0007] The inner surface of the front housing is provided with an inclined groove, the inner surface of the intermediate housing is rotatably connected with a rear turntable, the outer surface of the rear turntable is provided with rear holes, the inner surface of the outer support frame is slidably connected with a buffer box, and the outer surface of the output pipe is fixedly connected with an inner support frame.

[0008] Preferably, the number of the rear holes is two, and the two rear holes are symmetrically distributed with respect to the central axis of the rear turntable. The number of the buffer boxes is two, and the two buffer boxes are symmetrically distributed with respect to the central axis of the front housing. The buffer box is slidably connected with the inclined groove.

[0009] Preferably, the metering switching mechanism includes a front baffle, the front baffle is fixedly connected with the inner surface of the device housing, the outer surface of the front baffle is provided with an extrusion groove, the outer surface of the extrusion groove is provided with a front hole, the inner surface of the front baffle is rotatably connected with a driving main shaft, the outer surface of the driving main shaft is fixedly connected with an elastic column, the other end of the driving main shaft is fixedly connected with an output tooth groove, the outer surface of the driving main shaft is rotatably connected with an installation turntable, the inner surface of the installation turntable is slidably connected with a filter installation cylinder, the outer surface of the filter installation cylinder is sleeved with an extrusion spring, and the inner surface of the filter installation cylinder is fixedly connected with a filter screen.

[0010] 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.

[0011] 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.

[0012] Preferably, the axis of the output nozzle is collinear with that of the front hole at the top. The number of both the input slots and the input baffles is four, and the four input slots and input baffles are annularly distributed 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 direct-acting rod. The pulling block is slidably connected to the outer surface of the connecting block. The path groove 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 its inner wall. The other end of the connecting chain is sleeved on the outer surface of the output tooth groove. An inclined groove is formed on the outer surface of the connecting block. The piston rod is slidably connected to the inner surface of the inner mounting cylinder. The push-pull block passes through the inner mounting cylinder and is slidably connected to its inner wall.

[0013] Preferably, the linkage brushing mechanism includes a driven connection ring, which is fixedly connected to the outer surface of the connecting block. A push connecting plate is fixedly connected to the top surface of the driven connection ring. A push connecting rod is fixedly connected to the outer surface of the push connecting plate. The other end of the push connecting rod is fixedly connected to a push-pull plate. A contact ball head is fixedly connected to the inner surface of the push-pull plate. An inner mounting plate is fixedly connected to the inner surface of the front housing. A sliding sleeve is slidably connected to the inner surface of the inner mounting plate. An inner rotating cylinder is rotatably connected to the inner surface of the sliding sleeve. A cam groove is formed on the outer surface of the inner rotating cylinder. An adhesion brush head is fixedly connected to one end of the inner rotating cylinder.

[0014] Preferably, the driven connection 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. The adhesion brush head is slidably connected to the outer surface of the filter screen.

[0015] A method for using a filtering device for an aquaculture water inlet pipe includes the following steps:

[0016] S1. Connect the input pipe to the water source input end and the output pipe to the aquaculture water inlet pipe. Water flows through the input pipe and the front hole into the filter mounting cylinder. After being filtered by the filter screen, it enters the output pipe through the rear hole, and the filtered water is output.

[0017] S2. Drive the cylinder to reciprocate telescopically. During the extension process, it will drive 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 interior of the linear rod and extends 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 will push the output rod and the rotating inner seat to move within the inner mounting cylinder. At this time, the path contact block contacts the straight-line segment in the path groove, only generating linear motion and compressing the energy storage spring. However, at this time, the connecting block is restricted by the pulling block, and the energy storage spring cannot reset. Until the pulling block is gradually pressed into the interior of the linear rod and no longer contacts the connecting block after contacting the extrusion side plate. At this time, the path contact block is at the intersection of the straight-line segment and the inclined-line segment of the path groove. The energy storage spring instantaneously resets and pushes the rotating inner seat. At this time, the path contact block can only advance from the inclined-line segment until it is again at the intersection of the inclined-line segment and the straight-line segment on the other side, 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. Due to the symmetry of the path groove, the inclined-line segments on both sides intersect and have opposite directions. During 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, during the next movement, it will advance from the inclined-line segment on the other side. Since the inclined-line segments on both sides of the path groove have opposite directions, the rotation direction of the rotating inner seat is also opposite, achieving the effect of using the reciprocating telescoping of the driving cylinder to make the rotating inner seat slowly retreat, move linearly, quickly advance, and rotate. Each rotation is one hundred and eighty degrees and the direction is opposite to the previous one. The slow retreat and quick advance are used to trigger the driving cleaning mechanism and the linkage brushing mechanism, and the reciprocating rotation of retreating linearly and advancing rotationally is used to drive the metering switching mechanism;

[0018] S3. The rotating base is driven by the rotating inner seat to achieve reciprocating rotation. The reciprocating rotation is transmitted to the driving main shaft through the input tooth grooves, connecting chains, and output tooth grooves. The reciprocating rotation of the driving main shaft will drive the mounting turntable to achieve reciprocating rotation through the connection of the elastic columns. However, the front part of the filter mounting cylinder on the mounting turntable is embedded in the front hole of the front baffle. Since the front baffle is fixed, at this time, the driving main shaft cannot rotate the mounting turntable and can only twist the elastic columns to store the rotation and restore it during the next reverse rotation. The filter screen in the filter mounting cylinder will continuously be impacted by the water flow during filtration. Due to a large number of filter holes on the filter screen, the water flow will directly pass through the filter screen and generate a small thrust. When too much impurities adhere to the filter screen, causing the filter holes to be blocked or there are large obstacles, the thrust received by the water flow becomes larger. Then, the filter screen and the filter mounting cylinder will be pushed backward from the front hole by the water flow and compress the compression spring until the filter mounting cylinder no longer contacts the front hole. The mounting turntable will not be restricted by the front baffle to rotate. At this time, the reciprocating rotation of the driving main shaft will drive the mounting turntable to rotate 180 degrees and switch the filter mounting cylinder at the top and the filter mounting cylinder at the bottom. During the rotation and switching process of the filter mounting cylinder, it will move in the extrusion groove. Since the filter mounting cylinder will not be impacted by the water flow during the rotation and switching process, the compression spring will drive the compression spring to reset until it contacts the front hole at the top. The front hole and the extrusion groove at the top are both at the rear. At this time, the filter mounting cylinder cannot enter the front hole and, after being cleaned by the driving cleaning mechanism and the linkage brushing mechanism, is used for the next switch. Similarly, the filter mounting cylinder originally at the top will also pass through the extrusion groove. When it contacts the inclined extrusion groove in the lower part, the filter mounting cylinder will be pressed in and compress the compression spring until it contacts the front hole at the bottom. The compression spring resets. The front hole and the extrusion groove at the bottom are at the front, and the filter mounting cylinder will be embedded in the front hole again to achieve one switch. Since the rotating inner seat will drive the driving main shaft to rotate quickly and the elastic columns twist and reset quickly, the rotation of the mounting turntable is also fast, realizing the rapid switching of the filter mounting cylinder, reducing the time of flow interruption, and 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;

[0019] S4. Slow retraction and fast forward movement of the inner seat. First, the output rod drives the push-pull block and the piston rod to move. The output baffle inside the inner installation cylinder is installed outside the output groove, forming a one-way valve that can only output, while the input baffle is installed inside the input groove, forming a one-way valve that can only input. When the piston rod slowly retracts, the air flow slowly enters from the input groove. When the piston rod quickly advances, the gas quickly outputs from the output groove and is output to the filter installation cylinder at the top through the output nozzle. Since it is a quick output and after passing through the output nozzle, the air flow speed is amplified, blowing out the impurity particles on the filter screen in the top filter installation cylinder. The push-pull block and the connecting block also drive the driven connecting ring to retract and advance quickly, and drive the driven connecting ring, the push connecting plate, the push connecting rod, and the push-pull plate to move. During the movement of the push-pull plate, due to the friction between the contact ball head and the cam groove being greater than the friction between the sliding sleeve and the inner installation plate, it will first drive the sliding sleeve to move inside the inner installation plate. When the push-pull plate slowly retracts, the sliding sleeve is pulled backward until it cannot be pulled, and the adhesion brush head touches the filter screen. At this time, when the push-pull plate continues to retract, it will drive the inner rotating cylinder and the adhesion brush head to slowly rotate through the action of the contact ball head and the cam groove, adhering to the impurities on the filter screen. When the push-pull plate quickly advances, it will first push out the sliding sleeve, and the adhesion brush head moves to the outside of the filter installation cylinder and also quickly rotates under the action of the contact ball head and the cam groove, throwing out the adhered impurities into the front housing. The impurities slide down through the inclined groove into the buffer box, realizing the function of cleaning the top filter installation cylinder and being used for the next output switching.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] In the present invention, through the setting of the metering switching mechanism, when the filter screen is blocked by impurities and the water flow thrust increases, the top and bottom filter installation cylinders are automatically switched through the pressure change of the water flow, realizing the alternating use of the filter screens, reducing the water flow interruption caused by the blockage of the filter screen, avoiding the long-term use of a single filter screen, reducing the risk of damage to the filter screen due to excessive blockage. After the switched filter screen is cleaned, its filtering performance can be restored, ensuring the stability of the filtering effect.

[0022] In the present invention, through the setting of the driving and cleaning mechanism, using the cylinder and the pulling block, the working process of straight retraction, forward rotation, high-speed forward and reverse rotation is realized, driving the metering switching mechanism to switch the filter screen. Through high-speed forward and reverse rotation and using the elastic column for energy storage, the metering switching mechanism can be quickly switched, reducing the time of water flow interruption and ensuring that the filter screen is in a good working state.

[0023] In the present invention, through the combined cooperation of the driving and cleaning mechanism and the linkage brushing mechanism, by using the air cylinder and the pulling block, a working process of slow retraction and fast forward movement is achieved. The driving metering switching mechanism is driven to switch the filter screen, and the slow retraction and fast forward movement drive the air flow injection of itself and the linkage brushing mechanism to perform cleaning. Through the high-speed injection of the air flow, the impurity particles on the surface of the filter screen are blown out, preventing the filter screen from being blocked due to the accumulation of impurities. There is no need for manual frequent disassembly and cleaning of the filter screen, reducing the maintenance cost, automatically removing impurities and collecting them into the buffer tank, avoiding the re-entry of impurities into the water flow, and further ensuring the water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic side view of the internal structure of the present invention;

[0025] Figure 2 It is a schematic side view of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the cooperating structure of the front housing, inclined groove, outer support frame, and buffer tank of the present invention;

[0027] Figure 4 It is a schematic diagram of the cooperating structure of the front housing, metering switching mechanism, and rear turntable of the present invention;

[0028] Figure 5 It is a schematic diagram of the cooperating structure of the various components of the metering switching mechanism of the present invention;

[0029] Figure 6 It is a schematic diagram of the cooperating structure of the rear hole, front hole, and filter installation cylinder of the present invention;

[0030] Figure 7 It is a schematic diagram of the cooperating structure of the filter installation cylinder and the filter screen of the present invention;

[0031] Figure 8 It is a schematic diagram of the cooperating structure of the various components of the driving and cleaning mechanism of the present invention;

[0032] Figure 9 It is an exploded view of the internal structure of the inner installation cylinder of the present invention;

[0033] Figure 10 It is a schematic diagram of the cooperating structure of the driving air cylinder, extrusion side plate, straight moving rod, pulling block, and connecting block of the present invention;

[0034] Figure 11 It is a schematic diagram of the cooperating structure of the internal structure of the inner control cylinder of the present invention;

[0035] Figure 12 It is a schematic diagram of the cooperating structure of the inner control cylinder and the path groove of the present invention;

[0036] Figure 13It 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;

[0037] Figure 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;

[0038] Figure 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.

[0039] 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

[0040] 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.

[0041] See also Figures 1 to 15, the present invention provides a technical solution: a filtering device for an aquaculture water inlet pipe, which includes a device housing 1. The inner surface of the device housing 1 is fixedly connected with a front housing 2, and the inner surface of the device housing 1 is fixedly connected with an intermediate housing 3. The outer surface of the device housing 1 is fixedly connected with an outer support frame 4. A metering switching mechanism 5 is arranged on the inner surface of the device housing 1, and a driving cleaning mechanism 6 is arranged on the inner surface of the device housing 1. A linkage brushing mechanism 7 is arranged on the outer surface of the driving cleaning mechanism 6. The outer surface of the front housing 2 is fixedly connected with an input pipe 9, and the outer surface of the intermediate housing 3 is fixedly connected with an output pipe 91. The device housing 1, the front housing 2 and the intermediate housing 3 are used to install and protect the internal components. The outer support frame 4 is installed with a buffer box 41 for storing the impurity particles that affect blockage collected during filtration. 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;

[0042] An inclined groove 21 is formed on the inner surface of the front housing 2. A rear turntable 31 is rotatably connected to the inner surface of the intermediate housing 3. Rear holes 311 are formed on the outer surface of the rear turntable 31. A buffer box 41 is slidably connected to the inner surface of the outer support frame 4. An inner support frame 911 is fixedly connected to the outer surface of the output pipe 91. The inclined groove 21 is composed of an arc surface and an inclined surface. After 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. The rear turntable 31 and the rear holes 311 provide an installation position behind the filter installation cylinder 55. The filter installation cylinder 55 can slide in the rear holes 311, and the rear turntable 31 can rotate, so as not to affect the rotation of the installation turntable 54 and the filter installation cylinder 55.

[0043] The number of the rear holes 311 is two, and the two rear holes 311 are symmetrically distributed with respect to the central axis of the rear turntable 31. The number of the buffer boxes 41 is two, and the two buffer boxes 41 are symmetrically distributed with respect to the central axis of the front housing 2. The buffer box 41 is slidably connected with the inclined groove 21.

[0044] The metering switching mechanism 5 includes a front baffle 51, the front baffle 51 is fixedly connected to the inner surface of the device housing 1, an extrusion groove 52 is formed on the outer surface of the front baffle 51, a front hole 521 is formed on the outer surface of the extrusion groove 52, a driving main shaft 53 is rotatably connected to the inner surface of the front baffle 51, an elastic column 531 is fixedly connected to the outer surface of the driving main shaft 53, an output tooth groove 532 is fixedly connected to the other end of the driving main shaft 53, an installation turntable 54 is rotatably connected to the outer surface of the driving main shaft 53, a filter installation cylinder 55 is slidably connected to the inner surface of the installation turntable 54, an extrusion spring 551 is sleeved on the outer surface of the filter installation cylinder 55, a filter screen 552 is fixedly connected to the inner surface of the filter installation cylinder 55. Through the setting of the metering switching mechanism 5, during the use process, the extrusion groove 52 formed on the front baffle 51 provides a path to limit the movement of the filter installation cylinder 55, and during the movement, it gradually presses it in and finally gets stuck inside when passing through the front hole 521. At the same time, when the filter installation cylinder 55 moves on the extrusion groove 52, the front end will be blocked to prevent the collected impurity particles from falling. The front hole 521 plays a role in clamping the filter installation cylinder 55 and can be rotated according to the blockage condition of the filter installation cylinder 55. The elastic column 531 can store the torsional force for the rotation of the driving main shaft 53, and it can rotate and store in both clockwise and counterclockwise directions. If the installation turntable 54 can rotate, the driving main shaft 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 driving main shaft 53 rotates next time, if the filter installation cylinder 55 is pushed by water flow and no longer restricts the installation turntable 54, the elastic column 531 resets and drives the installation turntable 54 to rotate 180 degrees.

[0045] 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 axis of symmetry. The elastic columns 531 are annularly distributed around the driving main shaft 53. The other end of the elastic column 531 is fixedly connected to the installation 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 installation 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 axis of symmetry. The filter installation cylinder 55 penetrates through 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 pipeline 9 and the output pipeline 91 are collinear with the axis of the front hole 521 at the bottom. The upper half of the extrusion groove 52 is at the rear and will not clamp the filter installation cylinder 55, and the lower half gradually moves forward to clamp the filter installation cylinder 55. The upper and lower front holes 521 respectively correspond to the two filter installation cylinders 55 for switching, and the bottom filters the top for cleaning and next use.

[0046] 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.

[0047] The axis of the output nozzle 611 is collinear with the axis of the front hole 521 at the top. The number of input slots 613 and input baffles 6131 is four each, and the four input slots 613 and 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 direct-acting 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. 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 its inner wall. 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 inclined slot. The piston rod 652 is slidably connected to the inner surface of the inner mounting cylinder 61. The push-pull block 651 passes through the inner mounting cylinder 61 and is slidably connected to its inner wall. The path slot 641 inside the inner control cylinder 64 is composed of two straight segments on both sides and two inclined segments in the middle. The inclined segments are crossed spiral shapes, and different slopes and stoppers are provided on the path. When the path contact block 6431 moves, it is used to control the moving path. When the path contact block 6431 is at the intersection of the straight segment and the inclined segment at the frontmost position, it is set as the initial position. At this time, when going to the inclined segment, the height is higher and it is blocked and can only go along the straight segment. The rotating inner seat 643 moves linearly. The straight segment is an inclined plane, and the path contact block 6431 will be gradually pressed into the rotating inner seat 643 until it disengages from the inclined plane and falls into the intersection of the straight segment and the inclined segment at the rear. At this time, the height of the straight segment is higher and it is blocked and can only go along the inclined segment. The inclined segment is a spiral shape, which is equivalent to a cylindrical cam. During the movement of the path contact block 6431, it will drive the rotating inner seat 643 to rotate and move to the straight segment of the path slot 641 on the other side. At this time, the inclined segment is opposite to the previous inclined segment, and the rotating direction of the rotating inner seat 643 is also opposite. And because the forward movement on the inclined segment is driven by the reset of the energy storage spring 642 with a faster speed, the rapid rotation of the rotating inner seat 643 is realized, reducing the time for switching the filter mounting cylinder 55.

[0048] The linkage brushing and removing mechanism 7 includes a driven connection ring 71, which is fixedly connected to the outer surface of the connection block 6511. The top surface of the driven connection ring 71 is fixedly connected with a pushing connection plate 72. The outer surface of the pushing connection plate 72 is fixedly connected with a pushing connection rod 721. The other end of the pushing connection rod 721 is fixedly connected with a pushing and pulling plate 73. The inner surface of the pushing and pulling plate 73 is fixedly connected with a contact ball head 731. The inner surface of the front housing 2 is fixedly connected with an inner mounting plate 74. The inner surface of the inner mounting plate 74 is slidably connected with a sliding sleeve 75. The inner surface of the sliding sleeve 75 is rotatably connected with an inner rotating cylinder 751. A cam groove 7511 is formed on the outer surface of the inner rotating cylinder 751. One end of the inner rotating cylinder 751 is fixedly connected with an adhesion brush head 752. Through the setting of the linkage brushing and removing mechanism 7, during the use process, the piston rod 652 and the inner mounting cylinder 61 will drive the linkage brushing and removing mechanism 7 to play a cleaning role while outputting air flow. When the inner mounting cylinder 61 inhales, the piston rod 652 pulls backward, driving the sliding sleeve 75 and the inner rotating cylinder 751 to approach, and making the adhesion brush head 752 stick to the surface of the filter net 552 and rotate. When the inner mounting cylinder 61 exhales, the piston rod 652 pushes forward, and the adhesion brush head 752 will separate from the filter net 552 and swing rapidly.

[0049] The driven connection ring 71 is slidably connected to the outer surface of the inner mounting cylinder 61. The inner surface of the pushing and pulling plate 73 is slidably connected to the inner rotating cylinder 751. The contact ball head 731 is slidably connected to the cam groove 7511. The adhesion brush head 752 is slidably connected to the outer surface of the filter net 552.

[0050] In this embodiment, as Figure 1 、 Figure 2 shown, the device housing 1, the front housing 2 and the middle housing 3 are used to install and protect the internal components;

[0051] In this embodiment, as Figure 3 shown, the inclined groove 21 is composed of an arc surface and an inclined surface. After the linkage brushing and removing 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;

[0052] In this embodiment, as Figure 4 、 Figure 5 、 Figure 6 shown, the two ends of the filter mounting cylinder 55 are respectively slidably connected to the front hole 521 and the rear hole 311. By controlling the state of the filter mounting cylinder 55 stuck in the front hole 521, the rotation of the mounting turntable 54 is controlled. When driving the main shaft 53 to rotate, the filter mounting cylinder 55 can be driven to rotate for switching. When it cannot rotate, the elastic column 531 can store the torsional force for driving the main shaft 53 to rotate;

[0053] In this embodiment, as 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;

[0054] In this embodiment, Figure 8 , Figure 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;

[0055] In this embodiment, Figure 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;

[0056] In this embodiment, Figure 11 , Figure 12 , Figure 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.

[0057] In this embodiment, Figure 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;

[0058] In this embodiment, Figure 15 As shown, the adhesive brush head 752 contacts the filter 552 and rotates to adhere to the particulate matter on the filter 552.

[0059] A method for using a filtering device for an aquaculture water inlet pipe comprises the following steps:

[0060] 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;

[0061] S2. Drive the cylinder 62 to reciprocate telescopically. During the extending process, it will drive the linear rod 63 to move forward until the inclined surface of the pulling block 631 contacts the inclined surface of the connecting block 6511. The pulling block 631 is pressed into the interior of the linear rod 63 and extends after detaching from the connecting block 6511. At this time, the drive cylinder 62 retracts, and the linear rod 63 pulls the connecting block 6511 through the pulling block 631. While the pulling block 631 retreats, it will push the output rod 65 and the rotating inner seat 643 to move within the inner mounting cylinder 61. At this time, the path contact block 6431 contacts the straight-line segment in the path groove 641, only generating linear motion and compressing the energy storage spring 642. However, at this time, the connecting block 6511 is restricted by the pulling block 631, and the energy storage spring 642 cannot reset. Until the pulling block 631 is gradually pressed into the interior of the linear rod 63 and no longer contacts the connecting block 6511 after contacting the extrusion side plate 621. At this time, the path contact block 6431 is at the intersection of the straight-line segment and the inclined-line segment of the path groove 641. The energy storage spring 642 instantaneously resets and pushes the rotating inner seat 643. At this time, the path contact block 6431 can only advance from the inclined-line segment until it is again at the intersection of the inclined-line segment and the straight-line segment on the other side, 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 symmetric, the two inclined-line segments intersect and have opposite directions. During 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, during the next movement, it will advance from the inclined-line segment on the other side. Since the inclined-line segments on both sides of the path groove 641 have opposite directions, the rotation direction of the rotating inner seat 643 is also opposite, achieving the effect of using the reciprocating telescoping of the drive cylinder 62 to make the rotating inner seat 643 slowly retreat and move linearly and quickly advance and rotate. Each rotation is one hundred and eighty degrees and the direction is opposite to the previous one. The slow retreat and fast advance are used to trigger the drive cleaning mechanism 6 and the linkage brushing mechanism 7, and the reciprocating rotation of retreating linearly and advancing rotationally is used to drive the metering switching mechanism 5;

[0062] S3. The rotating base 644 is driven by the rotating inner base 643 to achieve reciprocating rotation. 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 achieve 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 can only twist the elastic column 531 to store the rotation and restore it during the next reverse rotation. The filter net 552 in the filter installation cylinder 55 will be continuously impacted by the water flow during filtration. 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, generating a small thrust. When too much impurities are contaminated on the filter net 552, resulting in the blockage of the filter holes or large obstacles, the thrust received by the water flow becomes larger. Then, 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 compression spring 551 until the filter installation cylinder 55 no longer contacts the front hole 521. The installation turntable 54 will not be restricted by the front baffle 51 to rotate. At this time, the reciprocating rotation of the driving main shaft 53 will drive the installation turntable 54 to rotate 180 degrees, and switch the filter installation cylinder 55 at the top and the filter installation cylinder 55 at the bottom. During the rotation and switching process of the filter installation cylinder 55, it will move in the extrusion groove 52. Since the filter installation cylinder 55 will not be impacted by the water flow during the rotation and switching process, the compression spring 551 will drive the compression 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 at the back. 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 linkage brushing mechanism 7, it is used for the next switching. And the filter installation cylinder 55 that was originally at the top will also pass through the extrusion groove 52. When it contacts the inclined extrusion groove 52 in the lower half, the filter installation cylinder 55 will be pressed in and compress the compression spring 551 until it contacts the front hole 521 at the bottom. The compression spring 551 resets, the front hole 521 at the bottom and the extrusion groove 52 are at the front, and the filter installation cylinder 55 will be embedded in the front hole 521 again to achieve one switching. Since the rotating inner base 643 will drive the driving main shaft 53 to rotate quickly, and the elastic column 531 also twists and resets quickly, the rotation of the installation turntable 54 is also fast, realizing the quick switching of the filter installation cylinder 55, reducing the time of flow interruption, and can be switched according to the pollution condition of the filter net 552 to prevent the premature or late replacement of the filter net 552;

[0063] S4. Rotate the slow retraction and fast forward of the inner seat 643. First, drive the push-pull block 651 and the piston rod 652 to move through the output rod 65. The output baffle 6121 inside the inner installation cylinder 61 is installed outside the output groove 612 to form a one-way valve that can only output, while 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 retracts, the air flow slowly inputs from the input groove 613. When the piston rod 652 quickly advances, the gas quickly outputs from the output groove 612 and is output to the filter installation cylinder 55 at the top through the output nozzle 611. Since it is a quick 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 retract and advance quickly, 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. During the movement of the push-pull plate 73, 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 installation plate 74, it will first drive the sliding sleeve 75 to move inside the inner installation plate 74. When the push-pull plate 73 slowly retracts, the sliding sleeve 75 is pulled backward until it cannot be pulled, and the adhesion brush head 752 touches the filter screen 552. At this time, when the push-pull plate 73 continues to slowly retract, it will drive the inner rotating cylinder 751 and the adhesion brush head 752 to slowly rotate through the action of the contact ball head 731 and the cam groove 7511, and adhere to the impurities on the filter screen 552. When the push-pull plate 73 quickly advances, it will first push out the sliding sleeve 75, and the adhesion brush head 752 moves to the outside of the filter installation cylinder 55 and also quickly rotates under the action of the contact ball head 731 and the cam groove 7511 to throw out the adhered impurities into the front housing 2, and the impurities slide into the buffer box 41 through the inclined groove 21, realizing the function of cleaning the top filter installation cylinder 55 and being used for the next output switching.

[0064] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification 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 will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended 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) is fixedly connected to the inner surface of the device housing (1), the outer surface of the front baffle (51) is provided with an extrusion groove (52), the outer surface of the extrusion groove (52) is provided with a front hole (521), the inner surface of the front baffle (51) is rotatably connected to a driving main shaft (53), the outer surface of the driving main shaft (53) is fixedly connected to an elastic column (531), the other end of the driving main shaft (53) is fixedly connected to an output tooth groove (532), the outer surface of the driving main shaft (53) is rotatably connected to a mounting turntable (54), 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); 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 cylinder (55) passes through 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), and the input pipe (9) and the output pipe (91) are collinear with the axis of the front hole (521) at the bottom; The upper part of the extrusion groove (52) is positioned backward and will not catch the filter installation cylinder (55), and the lower part is gradually positioned forward for catching the filter installation cylinder (55). The upper and lower front holes (521) respectively correspond to the two filter installation cylinders (55) to be switched, the bottom is used for filtering, and the top is used for cleaning and next use.

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 2, 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).

4. The filtering device for an aquaculture water inlet pipe according to claim 3, 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.

5. The filtering device for an aquaculture water inlet pipe according to claim 4, 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).

6. The filtering device for an aquaculture water inlet pipe according to claim 5, 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).

7. A method for using a filter device for an aquaculture water inlet pipe, using the filter device for an aquaculture water inlet pipe according to claim 6, 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 storage spring (642), but at this time, the connecting block (6511) is restricted by the pulling block (631), and the storage spring (642) 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 force storage spring (642) 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 straight line segment is located at the position where the inner seat (643) moves forward from the oblique line segment on the other side in the next movement. 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 time the rotation is 180 degrees and the direction is opposite to the previous one. The slow retreat and fast advance are used to trigger the driving cleaning mechanism (6) and the linkage brushing mechanism (7). The reciprocating rotation of retreat, straight advance 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 achieve 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 achieve 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 filter screen (552) is continuously impacted by the water flow while filtering. Since there are a large number of filter holes on the filter screen (552), the thrust generated by the water flow directly passing through the filter screen (552) is small. When the filter screen (552) is contaminated with too many impurities, resulting in the filter holes being blocked or there being a large obstacle, the thrust of the water flow increases, and the filter screen (552) and the filter installation cylinder (55) are 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) drives the installation turntable (54) to rotate 180 degrees, and the top filter installation cylinder (55) is pushed backward. ) and the filter installation cylinder (55) at the bottom are switched. 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) is not squeezed. The extrusion spring (551) gradually resets until the filter installation cylinder (55) 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), when contacting the inclined extrusion groove (52) at the lower half, the filter installation cylinder (55) is pressed in and compresses the extrusion spring (551) 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), 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, so that the filter installation cylinder (55) can be quickly switched, reducing the time of interruption, and can be switched according to the pollution condition of the filter screen (552).Preventing the filter (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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