An anti-clogging drip irrigation nozzle with a high-efficiency filtering device

Abstract

The invention relates to an anti-clogging drip irrigation nozzle with a high-efficiency filtering device applied to the field of drip irrigation. By arranging an outer tube and an inner tube, water is filtered in a first-in, last-out, and then-in manner. The two filtrations can effectively improve the filtering effect. The outer tube and the inner flexible brush are driven by a driving motor to rotate, so as to realize self-cleaning of the outer tube and the inner tube, and effectively maintain a high-efficiency filtering state of the outer tube and the inner tube. By arranging a pressure compensation elastic ring and a water pressure self-feedback anti-pressure plate, the pressure compensation elastic ring can realize the function of stabilizing the water pressure by utilizing the action force and reaction force. The water pressure self-feedback anti-pressure plate can effectively reduce the impact force of high-pressure water, and can automatically trigger a self-cleaning program when the water pressure is too low, so as to effectively improve the cleaning effect and effectively avoid the occurrence of blockage.

Description

Technical Field

[0001] The invention relates to an anti-clogging drip irrigation nozzle with a high-efficiency filtering device, in particular to an anti-clogging drip irrigation nozzle with a high-efficiency filtering device applied to the field of drip irrigation. Background Art

[0002] Drip irrigation is suitable for irrigation of fruit trees, vegetables, cash crops and greenhouses. It can also be used for irrigation of field crops in drought-scarce areas. Blockage of emitters is the main problem in current drip irrigation applications. In severe cases, the entire system cannot work properly or even become scrapped. The causes of blockage can be physical, biological or chemical factors, such as sediment, organic matter or microorganisms in the water and chemical precipitates.

[0003] In order to solve the problem of drip irrigation blockage, a certain drip irrigation nozzle in the market adopts a filtering design and has a certain market share.

[0004] The specification of Chinese patent CN202223261333.9 discloses a drip irrigation water treatment device with a filtering function. The patent is provided with a clamping plate and a filter plate, which can effectively prevent impurities from flowing into the interior of the drip irrigation nozzle from the water pipe to prevent blockage inside the drip irrigation nozzle, thereby ensuring the uniformity of drip irrigation of crops. A sealing plug and a movable plate are provided so that the movable plate is forced to slide along the outer side of the filter plate, thereby realizing the cleaning of the filter plate to ensure the normal use of the filter plate, and the impurities retained between the two sets of clamping plates can be guided.

[0005] The specification of Chinese patent CN202323588584.2 discloses an anti-clogging drip irrigation pipe with a built-in nozzle structure. The patent sets a filter plate and a filter hole to make the nozzle of the device less susceptible to clogging by impurities in the water, thereby improving the durability of the device. The water output of the device is easy to adjust by setting an adjustment knob, thereby improving the adaptability and convenience of the device. The ability of the device to adjust the water output is further improved by setting a rubber ring, thereby improving the controllability of the device. The fan blades are set to rotate under the impact of the water flow to provide kinetic energy for the device, making the device structure simpler. The scraper is set to rotate under the drive of the fan blades to clean the filter plate and prevent the device from being blocked.

[0006] Although the existing drip irrigation nozzles have filtering and self-cleaning functions, the power source of self-cleaning is still the impact force of water flow, which is not conducive to the stability of water pressure, resulting in unstable water output from the irrigator, which in turn affects the drip irrigation effect. In addition, the existing filtering device has only one filtering barrier, and the filtering effect is limited. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to improve the filtering effect and stabilize the water pressure.

[0008] In order to solve the above problems, the present invention provides an anti-clogging drip irrigation nozzle with a high-efficiency filtering device, comprising a drip irrigation seat, a plurality of ground plugs distributed around with equal intervals are fixedly connected to the lower end of the drip irrigation seat, a filter chamber is provided inside the drip irrigation seat, and a sealing cover is connected to the upper opening of the filter chamber by bolts, a nozzle seat is fixedly inlaid on the upper side wall of the sealing cover, and the nozzle seat penetrates the sealing cover, a water passage cavity is provided on the inner wall of the nozzle seat, and a plurality of nozzles connected with the water passage cavity are fixedly connected to the side wall of the nozzle seat, a driving motor is installed on the upper inner wall of the nozzle seat, a driving shaft is connected to the output end of the driving motor, and the driving shaft penetrates into the water passage cavity, a double-through filter cartridge is placed inside the filter chamber, and the lower end of the nozzle seat penetrates into the double-through filter cartridge;

[0009] The double-through filter cartridge comprises an outer through-tube and an inner through-tube, the upper end of the outer through-tube is fixedly connected with an upper closing cover that abuts against the sealing cover, and the lower end of the outer through-tube is fixedly connected with a bottom cover, the upper end of the inner through-tube is fixedly connected with a top cover rotatably connected with the bottom cover, and the lower end of the inner through-tube is fixedly connected with a lower closing cover that abuts against the inner wall of the lower end of the filter chamber, the lower end side wall of the lower closing cover is fixedly connected with a plurality of symmetrically distributed limiting blocks, and the lower end inner wall of the filter chamber is provided with limiting grooves matching the limiting blocks, the middle side walls of the upper closing cover and the lower closing cover are both provided with water outlets, and drip irrigation The side wall at the lower end of the seat is connected with a water inlet pipe connected with the water port, a driven shaft is fixedly embedded in the middle of the bottom cover, and the driven shaft passes through the top cover and extends to the inside of the inner tube, the upper end of the driven shaft is fixedly connected with an insert block plugged with the drive shaft, and the lower end of the drive shaft is provided with a slot matching the insert block, the lower end of the driven shaft is fixedly connected with a plurality of symmetrically distributed brackets, and one end of the bracket is fixedly connected with an inner flexible brush in contact with the inner wall of the inner tube, the inner wall of the filter chamber is fixedly connected with a plurality of symmetrically distributed outer flexible brushes, and the outer flexible brush is in contact with the outer wall of the outer tube.

[0010] In the above-mentioned anti-clogging drip irrigation nozzle with high-efficiency filtering device, the first-in, last-out, and then-in water entry method is used to effectively improve the filtering effect, and the filter is cleaned by the rotation effect. In addition, the water pressure can be effectively stabilized while filtering.

[0011] As a further improvement of the present application, both the outer tube and the inner tube include a filter screen and a support screen water-passing pad. The filter screen on the outer tube is located on the outside, and the filter screen on the inner tube is located on the inside. The filter screen plays a role in filtering water, while the support screen water-passing pad plays a role in shaping the filter screen. In this way, when the double-through filter cartridge is pressed by the sealing cover and the inner flexible brush and the outer flexible brush clean the double-through filter cartridge, the filter screen can remain bent and not deformed.

[0012] As a further improvement of the present application, the support mesh water pad has a porous structure, and the support mesh water pad is made of polyurethane elastic material. The holes on the support mesh water pad are designed to not hinder the smooth passage of water. The elastic force of the support mesh water pad prevents the filter from being deformed too much during the filtering and self-cleaning process, and also allows the filter to fit tightly against the outer flexible brush and the inner flexible brush.

[0013] As a further improvement of the present application, the lower end side wall of the sealing cover is rotatably connected to a rotating ring, and the rotating ring is in contact with the upper closing cover. The sealing cover presses the double-through filter cartridge into the interior of the filter chamber. Since the outer through-tube rotates under the drive of the driving motor, a rotating ring is added to the part of the sealing cover that contacts the upper closing cover to allow the upper closing cover to rotate freely.

[0014] As another improvement of the present application, a pressure-compensating elastic ring is fixedly connected to the inner wall of the filter chamber facing the connection between the bottom cover and the top cover, and the interior of the pressure-compensating elastic ring is filled with an elastic net, a plurality of C-shaped liquid chambers are arranged on the inner wall of the drip irrigation seat and are distributed around at equal intervals, the upper end of the C-shaped liquid chamber is connected to the interior of the pressure-compensating elastic ring, and the lower end of the C-shaped liquid chamber faces the inner tube, an extrusion plug is sealingly and slidably connected to the inner wall of the upper end of the C-shaped liquid chamber, an elastic buffer seat is fixedly connected to the inner wall of the C-shaped liquid chamber near the pressure-compensating elastic ring, and a pressure sensor is installed on the side wall of the elastic buffer seat near the extrusion plug, a connecting rod is fixedly connected to the side wall of the extrusion plug, and the connecting rod The inner wall of the lower end of the C-shaped liquid chamber is fixedly connected with a connecting column connected with the inside thereof, and hydraulic oil is filled between the connecting column and the extrusion plug, and one end of the connecting column close to the inner tube is fixedly connected with a water pressure self-feedback anti-pressure plate, and the water pressure self-feedback anti-pressure plate faces the inner tube, so that when water passes through the inner tube and comes out, it directly impacts the water pressure self-feedback anti-pressure plate, so the water pressure self-feedback anti-pressure plate plays a role in reducing the water pressure, thereby playing an effective pressure stabilizing role when the water pressure is large, and when the water pressure acts on the pressure compensating elastic ring, the pressure compensating elastic ring is squeezed by the water flow and deformed. The deformation of the pressure-compensating elastic ring causes the extrusion plug to squeeze the hydraulic oil into the interior of the water pressure self-feedback anti-pressure plate, thereby allowing the water pressure self-feedback anti-pressure plate to stretch, thereby increasing the contact area between the water pressure self-feedback anti-pressure plate and the water, thereby further effectively reducing the water pressure and achieving a better pressure stabilizing effect. In addition, since the pressure-compensating elastic ring is arranged on the path where water moves from the inner tube to the outer tube, when the water pressure is high, the pressure-compensating elastic ring and the water pressure self-feedback anti-pressure plate cooperate with each other to offset the impact force of the water flow and achieve a pressure-reducing effect. When the water pressure is low, the pressure-compensating elastic ring is affected by its own resilience and the rebound of the elastic net. At the same time, when the water pressure is too low due to blockage in the inner tube, the pressure compensation elastic ring bulges outward completely. At this time, the extrusion plug is pressed on the pressure sensor, and the pressure sensor starts the drive motor to rotate the inner flexible brush, so as to realize self-cleaning of the inner tube. If the water pressure is too low due to water supply problems, the extrusion plug will also be pressed on the pressure sensor, and the self-cleaning work will also be started. In this way, self-cleaning when the water pressure is low can effectively save energy, indirectly protect the self-cleaning structure, and effectively improve the self-cleaning effect.

[0015] As another improved supplement to the present application, the driving motor includes a timing cleaning module and a trigger cleaning module, and the pressure sensor is electrically connected to the trigger cleaning module through a control processor. A solar panel is also installed on the upper surface of the nozzle seat, and the solar panel is electrically connected to the driving motor. The driving motor has two working modes, one is self-cleaning according to a set time period, and the second is self-cleaning when the water pressure is too low due to blockage and water supply. Self-cleaning when the water pressure is low can effectively improve the cleaning effect. In order not to consume extra energy, solar panels are used to power the driving motor, which is in line with the concept of energy saving and environmental protection.

[0016] As another improvement supplement of the present application, the water pressure self-feedback anti-pressure plate includes a fixed plate, and the inner wall of the fixed plate is provided with a telescopic slide groove connected to the connecting column, and the telescopic plates are sealed and slidably connected at both ends of the telescopic slide groove, and an elastic stretch belt is fixedly connected between the two telescopic plates. When the pressure compensation elastic ring is depressed by the water pressure, the pressure compensation elastic ring drives the extrusion plug to push the hydraulic oil through the connecting rod. At this time, the hydraulic oil is squeezed into the telescopic slide groove inside the water pressure self-feedback anti-pressure plate through the connecting column, and then the two telescopic plates slide away from each other under the action of hydraulic pressure, which can increase the contact area between the water pressure self-feedback anti-pressure plate and water, thereby further effectively improving the water pressure reduction effect.

[0017] To summarize, by setting the outer tube and the inner tube, water is filtered in the manner of first in, last out, and then in again. The two filtrations can effectively improve the filtering effect. The outer tube and the inner flexible brush are rotated by the drive motor to realize the self-cleaning of the outer tube and the inner tube, which effectively allows the outer tube and the inner tube to maintain a high-efficiency filtering state. By setting the pressure compensation elastic ring and the water pressure self-feedback anti-pressure plate, the action force and reaction force are used to allow the pressure compensation elastic ring to stabilize the water pressure. The water pressure self-feedback anti-pressure plate can effectively reduce the impact force of high-pressure water, and can automatically trigger the self-cleaning program when the water pressure is too low, thereby effectively improving the cleaning effect and effectively avoiding blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a stereoscopic diagram of a drip irrigation nozzle according to a first embodiment of the present application;

[0019] Figure 2 This is a state diagram of the drip irrigation nozzle of the first embodiment of the present application at low water pressure;

[0020] Figure 3 This is a state diagram of the drip irrigation nozzle of the first embodiment of the present application when the water pressure is stable;

[0021] Figure 4 This is a three-dimensional diagram of a double-through filter cartridge according to the first embodiment of the present application;

[0022] Figure 5This is a three-dimensional cross-sectional view of a double-through filter cartridge according to the first embodiment of the present application;

[0023] Figure 6 This is a front cross-sectional view of a double-through filter cartridge according to the first embodiment of the present application;

[0024] Figure 7 for Figure 2 The enlarged view of point A in the middle;

[0025] Figure 8 for Figure 3 The enlarged view of point B in the middle;

[0026] Fig. 9 This is a top view of the water pressure self-feedback anti-pressure plate according to the second embodiment of the present application.

[0027] Description of the numbers in the figure:

[0028] 1 drip irrigation seat, 101 filter chamber, 102 C-shaped liquid chamber, 2 ground plug, 3 sealing cover, 4 nozzle seat, 401 water chamber, 402 nozzle, 5 drive motor, 501 solar panel, 6 drive shaft, 7 double-through filter cartridge, 701 outer through tube, 702 inner through tube, 703 upper closure cover, 704 bottom cover, 705 top cover, 706 lower closure cover, 707 water outlet, 708 driven shaft, 7081 plug, 709 bracket, 710 inner flexible brush, 8 limit block, 9 water inlet pipe, 10 filter screen, 11 support net water pad, 12 pressure compensation elastic ring, 13 elastic net, 14 extrusion plug, 15 connecting rod, 16 elastic buffer seat, 17 pressure sensor, 18 water pressure self-feedback anti-pressure plate, 1801 fixed plate, 1802 telescopic plate, 1803 elastic stretch belt, 19 connecting column, 20 outer flexible brush. DETAILED DESCRIPTION

[0029] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0030] The first implementation method:

[0031] Figure 1 , 2As shown, it includes a drip irrigation seat 1, the lower end of the drip irrigation seat 1 is fixedly connected to a plurality of ground plugs 2 that are equally spaced and distributed around, a filter chamber 101 is opened inside the drip irrigation seat 1, and a sealing cover 3 is connected to the upper opening of the filter chamber 101 by bolts (the specific connection structure is a well-known technology for technicians in the mechanical field and is not described in detail here), the lower end side wall of the sealing cover 3 is rotatably connected to a rotating ring, and the rotating ring is in contact with the upper closing cover 703, the sealing cover 3 presses the double-through filter cartridge 7 inside the filter chamber 101, and because the outer through-tube 701 rotates under the drive of the driving motor 5, a rotating ring is added to the sealing cover 3 at the part that contacts the upper closing cover 703 to The upper closure cover 703 is allowed to rotate freely, the upper side wall of the sealing cover 3 is fixedly inlaid with a nozzle seat 4, and the nozzle seat 4 penetrates the sealing cover 3, the inner wall of the nozzle seat 4 is provided with a water passage cavity 401, and the side wall of the nozzle seat 4 is fixedly connected with a plurality of nozzles 402 connected with the water passage cavity 401, and the upper inner wall of the nozzle seat 4 is installed with a driving motor 5 (the specific model is selected according to actual needs and is not described in detail here), the output end of the driving motor 5 is connected with a driving shaft 6, and the driving shaft 6 penetrates into the inside of the water passage cavity 401, and a double-through filter cartridge 7 is placed inside the filter cavity 101, and the lower end of the nozzle seat 4 penetrates into the inside of the double-through filter cartridge 7;

[0032] Figure 3 , 4 and Figure 6 As shown, the double-through filter cartridge 7 includes an outer through-tube 701 and an inner through-tube 702, both of which include a filter screen 10 and a support screen water-passing pad 11. The filter screen 10 on the outer through-tube 701 is located on the outside, and the filter screen 10 on the inner through-tube 702 is located on the inside. The filter screen 10 plays a role in filtering water, and the support screen water-passing pad 11 plays a role in shaping the filter screen 10. In this way, when the double-through filter cartridge 7 is pressed by the sealing cover 3 and the inner flexible brush 71 0 and the outer flexible brush 20 clean the double-through filter cartridge 7, the filter screen 10 can keep bending without deformation, the support net water pad 11 is a porous structure, and the support net water pad 11 is made of polyurethane elastic material, the holes on the support net water pad 11 are to prevent water from passing smoothly, and the elastic force of the support net water pad 11 prevents the filter screen 10 from being deformed too much during the filtering and self-cleaning process, and at the same time allows the filter screen 10 to be closely attached to the outer flexible brush 20 and the inner flexible brush 710;

[0033] Figure 5As shown, the upper end of the outer tube 701 is fixedly connected with an upper closing cover 703 that abuts against the sealing cover 3, and the lower end of the outer tube 701 is fixedly connected with a bottom cover 704, the upper end of the inner tube 702 is fixedly connected with a top cover 705 rotatably connected to the bottom cover 704, and the lower end of the inner tube 702 is fixedly connected with a lower closing cover 706 that abuts against the inner wall of the lower end of the filter chamber 101, the lower end side wall of the lower closing cover 706 is fixedly connected with a plurality of symmetrically distributed limiting blocks 8, and the lower end inner wall of the filter chamber 101 is provided with limiting grooves matching the limiting blocks 8, the middle side walls of the upper closing cover 703 and the lower closing cover 706 are both provided with water outlets 707, and the lower end side wall of the drip irrigation seat 1 is connected with a The water inlet pipe 9 is connected to the water outlet 707, and a driven shaft 708 is fixedly embedded in the middle of the bottom cover 704, and the driven shaft 708 passes through the top cover 705 and extends to the interior of the inner tube 702, and the upper end of the driven shaft 708 is fixedly connected with an insertion block 7081 plugged into the drive shaft 6, and the lower end of the drive shaft 6 is provided with a slot matching the insertion block 7081, the lower end of the driven shaft 708 is fixedly connected with a plurality of symmetrically distributed brackets 709, and one end of the bracket 709 is fixedly connected with an inner flexible brush 710 in contact with the inner wall of the inner tube 702, and the inner wall of the filter chamber 101 is fixedly connected with a plurality of symmetrically distributed outer flexible brushes 20, and the outer flexible brush 20 is in contact with the outer wall of the outer tube 701.

[0034] The second implementation method:

[0035] Figure 7 , 8It is shown that the inner wall of the filter chamber 101 facing the connection between the bottom cover 704 and the top cover 705 is also fixedly connected with a pressure compensation elastic ring 12 (elastic metal material is preferably used, and other materials can also be selected according to actual needs), and the interior of the pressure compensation elastic ring 12 is filled with an elastic net 13 (rubber material is preferably used, and other materials can also be selected according to actual needs), and the inner wall of the drip irrigation seat 1 is provided with a plurality of C-shaped liquid chambers 102 distributed around at equal intervals, the upper end of the C-shaped liquid chamber 102 is connected to the interior of the pressure compensation elastic ring 12, and the lower end of the C-shaped liquid chamber 102 faces the inner tube 702, the upper end inner wall of the C-shaped liquid chamber 102 is sealingly and slidably connected with an extrusion plug 14, the inner wall of the C-shaped liquid chamber 102 close to the pressure compensation elastic ring 12 is fixedly connected with an elastic buffer seat 16, and the elastic buffer seat 16 is close to the side wall of the extrusion plug 14. A pressure sensor 17 is installed (the specific model is selected according to actual needs and will not be described in detail here), the driving motor 5 includes a timing cleaning module and a trigger cleaning module, and the pressure sensor 17 is electrically connected to the trigger cleaning module through a control processor (the specific connection structure and control principle are well-known technologies for technicians in the relevant field and will not be described in detail here), a solar panel 501 is also installed on the upper surface of the nozzle seat 4, and the solar panel 501 is electrically connected to the driving motor 5, and the driving motor 5 has two working modes, one is self-cleaning according to a set time period, and the second is self-cleaning when the water pressure is too low due to blockage and water supply. Self-cleaning when the water pressure is low can effectively improve the cleaning effect. In order not to consume extra energy, the solar panel 501 is used to power the driving motor 5, which is in line with the concept of energy saving and environmental protection;

[0036] Figure 7 , 8As shown, the side wall of the extrusion plug 14 is fixedly connected with a connecting rod 15, and the connecting rod 15 passes through the elastic buffer seat 16 and is fixedly connected to the inner wall of the pressure compensation elastic ring 12, the lower end inner wall of the C-shaped liquid chamber 102 is fixedly connected with a connecting column 19 connected to the inside thereof, and the connecting column 19 and the extrusion plug 14 are filled with hydraulic oil, and the end of the connecting column 19 close to the inner tube 702 is fixedly connected with a water pressure self-feedback anti-pressure plate 18, and the water pressure self-feedback anti-pressure plate 18 is directly opposite to the inner tube 702, so that when water passes through the inner tube 702 and comes out, it directly impacts the water pressure The hydraulic pressure self-feedback anti-pressure plate 18 is on the self-feedback anti-pressure plate 18, so the hydraulic pressure self-feedback anti-pressure plate 18 plays a role in reducing the water pressure, so that it can play an effective role in stabilizing the pressure when the water pressure is large. When the water pressure acts on the pressure compensation elastic ring 12, the pressure compensation elastic ring 12 is squeezed and deformed by the water flow. The deformation of the pressure compensation elastic ring 12 causes the extrusion plug 14 to squeeze the hydraulic oil into the interior of the hydraulic pressure self-feedback anti-pressure plate 18, so that the hydraulic pressure self-feedback anti-pressure plate 18 is stretched, which increases the contact area between the hydraulic pressure self-feedback anti-pressure plate 18 and the water, thereby further effectively reducing In addition, since the pressure compensation elastic ring 12 is arranged on the path of water moving from the inner tube 702 to the outer tube 701, when the water pressure is high, the pressure compensation elastic ring 12 and the water pressure self-feedback anti-pressure plate 18 cooperate with each other to offset the impact force of the water flow and play a role in reducing pressure. When the water pressure is low, the pressure compensation elastic ring 12 is bulged outward by its own rebound force and the rebound force of the elastic net 13, thereby reducing the cross-sectional area of ​​the water flow and playing a role in pressure compensation. At the same time, the blockage caused by the inner tube 702 When the water pressure is too low, the pressure compensation elastic ring 12 completely bulges outwards, and at this time, the extrusion plug 14 presses on the pressure sensor 17, and the pressure sensor 17 starts the driving motor 5 to rotate the inner flexible brush 710, so as to realize the self-cleaning of the inner tube 702. If the water pressure is too low due to water supply problems, the extrusion plug 14 will also press on the pressure sensor 17, and the self-cleaning work will also be started. In this way, self-cleaning when the water pressure is low can effectively save energy consumption, and can also indirectly protect the self-cleaning structure, and can also effectively improve the self-cleaning effect;

[0037] Fig. 9It is shown that the water pressure self-feedback anti-pressure plate 18 includes a fixed plate 1801, and the inner wall of the fixed plate 1801 is provided with a telescopic slide groove connected to the connecting column 19, and both ends of the telescopic slide groove are sealed and slidably connected with telescopic plates 1802, and an elastic stretch belt 1803 is fixedly connected between the two telescopic plates 1802. When the pressure compensation elastic ring 12 is depressed by the water pressure, the pressure compensation elastic ring 12 drives the extrusion plug 14 to push the hydraulic oil through the connecting rod 15. At this time, the hydraulic oil is squeezed into the telescopic slide groove inside the water pressure self-feedback anti-pressure plate 18 through the connecting column 19, and then the two telescopic plates 1802 slide away from each other under the action of hydraulic pressure, which can increase the contact area between the water pressure self-feedback anti-pressure plate 18 and water, thereby further effectively improving the water pressure reduction effect.

[0038] The working principle of this scheme is as follows: before use, the water inlet pipe 9 is connected to the water supply pipe, and then the drip irrigation seat 1 is inserted into the ground. After the water supply starts, the water first enters the inner tube 702, and then the water flows through the inner tube 702. At this time, the inner tube 702 performs the first filter on the water, and then the water passes through the outer tube 701. At this time, the outer tube 701 performs the second filter on the water, and finally the water flows from the water cavity 401 to the nozzle 402 and sprays out. After the water flows through the inner tube 702, the water directly flushes the nozzle 402. The pressure compensation elastic ring 12 is provided on the path of water flowing from the outer tube 701 to the inner tube 702, so the water flow will also impact the pressure compensation elastic ring 12. By relying on the action force and reaction force, when the water pressure is too large, the pressure compensation elastic ring 12 is squeezed and deformed by the water flow, and the pressure compensation elastic ring 12 can offset part of the water pressure, thereby playing the role of reducing pressure. At the same time, the pressure compensation elastic ring 12 can also play the role of reducing pressure. The deformation of the elastic ring 12 causes the extrusion plug 14 to squeeze the hydraulic oil into the interior of the water pressure self-feedback anti-pressure plate 18, and the water pressure self-feedback anti-pressure plate 18 stretches outward to increase the contact area with the water, thereby further effectively improving the water pressure reduction effect. When the water pressure is small, the pressure compensation elastic ring 12 bulges outward due to its own rebound force and the rebound force of the elastic net 13, thereby reducing the cross-sectional area of ​​the water flow, playing a role in pressure compensation. In this way, no matter whether the water pressure is large or small, the pressure compensation elastic ring 12 can be effective. It effectively stabilizes the water pressure and allows the water to stably spray out from the nozzle 402. In addition, when the water pressure is too low due to blockage of the inner tube 702, the pressure compensation elastic ring 12 completely bulges outward. At this time, the extrusion plug 14 presses on the pressure sensor 17, and the pressure sensor 17 starts the drive motor 5 to rotate the inner flexible brush 710, thereby realizing self-cleaning of the inner tube 702. If the water pressure is too low due to a water supply problem, the extrusion plug 14 will also press on the pressure sensor 17, and the self-cleaning work will also be started.

[0039] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An anti-clogging drip irrigation nozzle with a high-efficiency filtering device, characterized in that: The invention comprises a drip irrigation seat (1), wherein the lower end of the drip irrigation seat (1) is fixedly connected to a plurality of ground plugs (2) which are equidistantly distributed around the drip irrigation seat (1), a filter chamber (101) is provided inside the drip irrigation seat (1), and a sealing cover (3) is connected to the upper opening of the filter chamber (101) via bolts, a nozzle seat (4) is fixedly inlaid on the upper side wall of the sealing cover (3), and the nozzle seat (4) passes through the sealing cover (3), and a water passage cavity (401) is provided on the inner wall of the nozzle seat (4). ), and a plurality of nozzles (402) in communication with the water passage cavity (401) are fixedly connected to the side wall of the nozzle seat (4), a driving motor (5) is installed on the inner wall of the upper end of the nozzle seat (4), an output end of the driving motor (5) is connected to a driving shaft (6), and the driving shaft (6) penetrates into the interior of the water passage cavity (401), a double-through filter cartridge (7) is placed inside the filter cavity (101), and the lower end of the nozzle seat (4) penetrates into the interior of the double-through filter cartridge (7); The double-through filter cartridge (7) comprises an outer through-tube (701) and an inner through-tube (702), the outer through-tube (701) and the inner through-tube (702) both comprising a filter screen (10) and a support screen water-passing pad (11), the filter screen (10) on the outer through-tube (701) being located on the outside, the filter screen (10) on the inner through-tube (702) being located on the inside, the upper end of the outer through-tube (701) being fixedly connected to an upper sealing cover (703) that abuts against the sealing cover (3), and the outer through-tube (701) The lower end of the inner tube (702) is fixedly connected to a bottom cover (704), the upper end of the inner tube (702) is fixedly connected to a top cover (705) rotatably connected to the bottom cover (704), and the lower end of the inner tube (702) is fixedly connected to a lower closing cover (706) that abuts against the inner wall of the lower end of the filter chamber (101), the lower end side wall of the lower closing cover (706) is fixedly connected to a plurality of symmetrically distributed limiting blocks (8), and the lower end inner wall of the filter chamber (101) is provided with limiting grooves matching the limiting blocks (8), The middle side walls of the upper closing cover (703) and the lower closing cover (706) are both provided with a water outlet (707), and the lower side wall of the drip irrigation seat (1) is connected to a water inlet pipe (9) in communication with the water outlet (707). A driven shaft (708) is fixedly embedded in the middle of the bottom cover (704), and the driven shaft (708) passes through the top cover (705) and extends to the interior of the inner tube (702). The upper end of the driven shaft (708) is fixedly connected to an insert block (706) that is plugged into the drive shaft (6). 7081), and a slot matching the plug block (7081) is provided at the lower end of the driving shaft (6), a plurality of symmetrically distributed brackets (709) are fixedly connected to the lower end of the driven shaft (708), and one end of the bracket (709) is fixedly connected to an inner flexible brush (710) in contact with the inner wall of the inner tube (702), and a plurality of symmetrically distributed outer flexible brushes (20) are fixedly connected to the inner wall of the filter cavity (101), and the outer flexible brush (20) is in contact with the outer wall of the outer tube (701).

2. The anti-clogging drip irrigation nozzle with a high-efficiency filtering device according to claim 1, characterized in that: The supporting mesh water-passing pad (11) is of a porous structure, and the supporting mesh water-passing pad (11) is made of polyurethane elastic material.

3. The anti-clogging drip irrigation nozzle with a high-efficiency filtering device according to claim 1 is characterized in that: The lower end side wall of the sealing cover (3) is rotatably connected to a rotating ring, and the rotating ring is in contact with the upper sealing cover (703).

4. The anti-clogging drip irrigation nozzle with a high-efficiency filtering device according to claim 1, characterized in that: The filter chamber (101) is also fixedly connected to an inner wall of a connection point between the bottom cover (704) and the top cover (705), and the interior of the pressure compensation elastic ring (12) is filled with an elastic net (13). The inner wall of the drip irrigation seat (1) is provided with a plurality of C-shaped liquid chambers (102) distributed around the bottom cover (704) and the top cover (705). The upper end of the C-shaped liquid chamber (102) is connected to the interior of the pressure compensation elastic ring (12), and the lower end of the C-shaped liquid chamber (102) is directly opposite to the inner tube (702). The upper inner wall of the C-shaped liquid chamber (102) is sealingly and slidably connected to an extrusion plug (14). The C-shaped liquid chamber (102) is close to the pressure compensation elastic ring (1 2) is fixedly connected to the inner wall of the elastic buffer seat (16), and a pressure sensor (17) is installed on the side wall of the elastic buffer seat (16) close to the extrusion plug (14), the side wall of the extrusion plug (14) is fixedly connected to the connecting rod (15), and the connecting rod (15) passes through the elastic buffer seat (16) and is fixedly connected to the inner wall of the pressure compensation elastic ring (12), the lower inner wall of the C-shaped liquid chamber (102) is fixedly connected to a connecting column (19) connected to the inside thereof, and hydraulic oil is filled between the connecting column (19) and the extrusion plug (14), and one end of the connecting column (19) close to the inner tube (702) is fixedly connected to a water pressure self-feedback anti-pressure plate (18).

5. The anti-clogging drip irrigation nozzle with a high-efficiency filtering device according to claim 4, characterized in that: The driving motor (5) comprises a timing cleaning module and a trigger cleaning module, and the pressure sensor (17) is electrically connected to the trigger cleaning module via a control processor. A solar panel (501) is also installed on the upper surface of the nozzle seat (4), and the solar panel (501) is electrically connected to the driving motor (5).

6. The anti-clogging drip irrigation nozzle with a high-efficiency filtering device according to claim 4, characterized in that: The water pressure self-feedback anti-pressure plate (18) comprises a fixed plate (1801), and the inner wall of the fixed plate (1801) is provided with a telescopic slide groove connected to the connecting column (19), both ends of the telescopic slide groove are sealed and slidably connected to the telescopic plates (1802), and an elastic stretch belt (1803) is fixedly connected between the two telescopic plates (1802).

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