Eddy and high-pressure spray-washing pump front filter for irrigation and self-cleaning method

Abstract

The invention relates to the technical field of agricultural irrigation machinery, in particular to a vortex and high-pressure spraying pump front filter for irrigation, which comprises a support, a filter screen cylinder, a driving mechanism, a cantilever pipeline, a vortex high-pressure spraying device, a high-pressure hose and a high-pressure water inlet, vortex high-pressure jetting devices are arranged on the two sides of the cantilever pipeline respectively, and the cantilever pipeline and the vortex high-pressure jetting devices are driven by a power output shaft to rotate relative to the filter screen cylinder; a self-cleaning method of a vortex and high-pressure spray-washing pump front filter for irrigation comprises the following steps: high-pressure water flow is conveyed to a high-pressure nozzle to impact and clean impurities on a filter screen cylinder; the vortex high-pressure jet device rotates to form vortex, and part of large impurities adhered to the filter screen cylinder are separated; negative-pressure jet cleaning is completed; and along with rotation, impurities on the filter screen cylinder can be continuously and repeatedly cleaned. The self-cleaning filter screen is reasonable in structure, economical, practical, safe and convenient, and the self-cleaning effect of the filter screen is improved by spray-washing from inside to outside or from outside to inside.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural irrigation machinery, and in particular to a filter before a vortex and high-pressure spray pump for irrigation and a self-cleaning method. Background Art

[0002] The pollution of surface water used for agricultural irrigation is very common. Its pollution sources mainly include physical pollutants (sand, soil, plant debris, leaves, mineral debris, plastic fragments, etc.) and organic pollutants (viscous secretions produced by the growth of bacteria, fungi, etc.), and water pollution is often the result of the mixed action of multiple pollutants. The presence of these pollutants seriously affects the potential of the efficient irrigation system mainly supported by drip irrigation technology. At present, the filtering means for such substances are mostly simple fence devices. After rough blocking treatment, a large amount of pollutants enter the sedimentation tank. Generally, they also need to go through sand and gravel + mesh or mesh self-cleaning filters, and finally enter the field for irrigation. During use, the fence is often blocked and very difficult to clean, which often leads to a large amount of pollutants entering the filter, which is easy to block the filter in a very short time. Frequent shutdowns to maintain the filtration system will greatly reduce the efficiency of irrigation work and seriously affect the normal progress of irrigation work.

[0003] The pre-pump filter is a filter installed at the head of the drip irrigation system. When the liquid entering the pump passes through the filter screen in the filter cavity, large-particle impurities that may clog or damage the pump are deposited on the filter screen, and the impurities are filtered out. At the same time, the working pressure of the post-pump filtration system is reduced, the working duration of the filtration system is extended, and energy loss is reduced. At present, most of the pre-pump filters are simple filters installed in front of the pump. After the water passes through, impurities will be left on the filter screen, which will clog the filter screen over time. The filter screen needs to be removed manually and cleaned regularly, which increases the workload of workers and makes the filter inefficient and less economical.

[0004] The invention patent CN106582100A discloses a mesh fluid filtering device, including a bracket, a filter, a disturbance device and a driving device; the filter is arranged on the bracket; the filter has a rotating surface; one end of the filter has an outlet; the disturbance device can be rotatably arranged on the bracket or the filter; the disturbance device includes: a disturbance member; the disturbance member is parallel to the outer wall of the filter and arranged close to the outer wall of the filter; the disturbance member is driven by the driving device to rotate around the axis of the filter. Affected by domestic water quality, during the cleaning process of the above-mentioned filtering device, some impurities will continue to adhere to the inner wall of the filter, and there will be a flushing blind area on the outer surface of the filter during the cleaning process, so that these impurities will not be completely removed, and will still affect the self-cleaning and filtering efficiency of the overall filter. Summary of the invention

[0005] The purpose of the present invention is to provide a vortex and high-pressure spray pump pre-filter for irrigation with a reasonable structure, economy and practicality, as well as a practical and efficient self-cleaning method, which is specifically used for filtering surface water with high impurity content for irrigation. It uses high-pressure pump water flow, combined with a disturbance device, to achieve spraying from the inside to the outside or from the outside to the inside to improve the self-cleaning effect of the filter, and improve the automatic backwashing and filtration efficiency, which is safe and convenient.

[0006] The invention discloses a vortex and high-pressure spray pump pre-filter for irrigation, the structure of which mainly comprises a bracket and a filter screen cylinder, a water outlet is arranged at the lower end of the filter screen cylinder, and also comprises a driving mechanism, a cantilever pipe, a vortex high-pressure injection device, a high-pressure hose and a high-pressure water inlet; the driving mechanism is arranged above the filter screen cylinder, the driving mechanism comprises a reducer, the high-pressure hose is connected with the power output shaft of the reducer through a conversion device, the power output shaft is a hollow pipe shaft, the power output shaft is connected with the cantilever pipe below, vortex high-pressure injection devices are respectively arranged on both sides of the cantilever pipe, the cantilever pipe and the vortex high-pressure injection device are driven by the power output shaft, and rotate relative to the filter screen cylinder with the axis of the filter screen cylinder as the center; the conversion device refers to a stainless steel universal rotary joint in the current technology, which can be directly purchased in the market, and this rotary joint is used to supply pressurized fluids, fluids below atmospheric pressure, etc. from fixed piping to the rotating parts of various mechanical devices without leakage, or to discharge them.

[0007] The eddy current high-pressure injection device comprises an eddy current disturbing member and a high-pressure injection member; The structure of the vortex disturbance element includes a semi-open shell and a front push plate, wherein the front push plate is installed on one side of the semi-open shell, extends forward and is close to the outer wall of the filter cylinder; The structure of the high-pressure injection member includes a support tube and a high-pressure nozzle arranged on the support tube, the support tube and the high-pressure nozzle are arranged inside the semi-open shell cover and are connected to the cantilever pipe, and the vortex disturbance member and the high-pressure injection member are both arranged on the outside of the filter cylinder; Alternatively, the vortex disturbance member is arranged on the outside of the filter screen cylinder, and the support pipe and the high-pressure nozzle are arranged on the inside of the filter screen cylinder, the position corresponds to the vortex disturbance member on the outside, and is connected to the cantilever pipe through a pipeline.

[0008] Preferably, the structure of the pre-pump filter also includes a high-pressure pump, which is arranged above the filter cylinder, and the water outlet of the high-pressure pump is connected to a high-pressure hose.

[0009] Preferably, the opening of the semi-open shell cover faces the side wall of the filter mesh cylinder, and a plurality of high-pressure nozzles are arranged on the support tube at intervals, and the openings of the high-pressure nozzles also face the side wall of the filter mesh cylinder; the semi-open shell cover and the support tube are arranged vertically parallel to the side wall of the filter mesh cylinder.

[0010] Preferably, the front push plate is made of elastic material, and the distance between the front push plate and the outer wall of the filter screen cylinder is a preset gap, and the preset gap is adjustable.

[0011] Preferably, the structure further comprises a buoy and a buoy support rod, the buoy is fixed on the buoy support rod, a large shield is arranged at the upper end of the filter screen cylinder, and a motor shield is arranged above the driving mechanism.

[0012] Preferably, when the support pipe and the high-pressure nozzle are arranged on the inner side of the filter screen cylinder, the pipeline connected to the cantilever pipe includes a vertical pipe arranged below the cantilever pipe and horizontal pipes arranged on both sides of the vertical pipe. The cantilever pipe is connected to the support pipes on both sides through the vertical pipe and the horizontal pipe.

[0013] A self-cleaning method for a filter before an eddy current and high-pressure spray pump for irrigation, mainly comprising the following steps: (i) The filter cylinder is placed in sewage, and the sewage flows from the outside to the inside of the filter cylinder having a rotating surface, and the impurities intercepted by the filter cylinder adhere to the filter cylinder or remain outside the filter cylinder; (ii) The high-pressure pump is turned on, and the high-pressure water flows through the high-pressure hose and the cantilever pipe and is transported to the high-pressure nozzle of the vortex high-pressure injection device. The high-pressure water flow ejected from the high-pressure nozzle impacts the filter cylinder from the outside to the inside or from the inside to the outside, cleaning the impurities attached to the filter cylinder; (III) The vortex high-pressure jet device rotates, and the front push plate at the front closely adheres to the filter screen cylinder and slides across the screen surface. A small part of the impurities are peeled off by the front push plate. As the vortex high-pressure jet device rotates, the water flow from outside to inside is cut off, and interacts with the centrifugal water flow to form a vortex, which separates some large impurities adhering to the filter screen cylinder and pushes them to the water area away from the filter screen; (IV) The front push plate passes over the surface of the filter screen, forming a dynamic negative pressure zone behind the front push plate. Under the action of negative pressure, the filtered clean water is sucked out of the filter screen to form a dynamic jet-like water flow. The jet-like water flow is divided by the mesh to form a stream of water that is ejected from the inside to the outside. The water flow has a strong impact force and will continue to wash away the impurities adhering to the filter screen, completing the negative pressure jet cleaning; (V) As the eddy current high pressure jet device rotates, the impurities on the filter cylinder will be repeatedly cleaned, and the adhesion of impurities on the filter will always maintain a certain balance, thus achieving self-cleaning of the filter cylinder.

[0014] The working process of the pre-pump filter of the present invention is as follows: 1. The high-pressure pump and reducer start working; 2. The eddy current high pressure jet device rotates continuously, and impurities are continuously cleaned off; 3. As the eddy current high pressure jet device moves away, impurities adhere to it again; 4. As time goes by, more and more impurities accumulate; 5. It is then cleaned by the next arriving vortex high-pressure jet device.

[0015] The process repeats itself over and over again: being adhered → being cleaned → being adhered again → being cleaned again.

[0016] The working principle of the pre-pump filter of the present invention: When the front push plate in front of the vortex disturbance element slides across the screen close to the filter, some impurities are peeled off by the front push plate. As the disturber rotates, the water flow from outside to inside is cut off, and interacts with the centrifugal water flow to form a vortex, which separates some large impurities adhering to the filter and pushes them to the water area away from the filter.

[0017] When the vortex disturbance piece moves in a circle around the filter screen, a dynamic negative pressure zone will be formed behind the vortex disturbance piece. Under the action of negative pressure, the filtered clean water is sucked out of the filter screen to form a dynamic jet-like water flow. The jet-like water flow is divided by the mesh to form a stream of water that is ejected from the inside to the outside. This water flow has a strong impact force and will continue to wash away the impurities adhering to the filter screen. In combination with the high-pressure water flow sprayed by the high-pressure nozzle, the impurities on the filter screen that the vortex disturbance piece has just passed through are washed away. At this time, a part of the filter screen immediately behind the negative pressure zone will form a completely clean dynamic zone.

[0018] Under the action of this cyclical movement, the mesh surface of the filter is effectively cleaned and clean water is continuously pumped away to ensure that the filter can work normally.

[0019] Compared with the prior art, the present invention has the following advantages: The invention mainly solves the problem of filtering extremely poor quality surface irrigation water in a front pool in a farmland irrigation system.

[0020] Due to water quality problems, after the pre-pump filter is turned on, the front push plate in front of the vortex disturbance element will peel off some impurities. At this time, if the filter cannot meet the filtering requirements under working conditions, the high-pressure pump will be turned on, and the high-pressure water will be transported to the vortex high-pressure injection devices at both ends after passing through the high-pressure water pipe. The high-pressure water sprayed from the high-pressure nozzle on the outside or inside of the filter barrel will impact the filter net to further clean the impurities attached to the filter net. After the impurities are cleaned, they flow into the debris collector with the water flow. Thus, the technical effects of continuous filtration, continuous cleaning, and automatic cleaning are achieved.

[0021] The present invention also solves the problem of damage to equipment and personnel caused by unexpected situations when the live equipment on the filter is repaired during use. The present invention can install the live equipment-high-pressure pump in the pump room, and provide high-pressure water to the vortex high-pressure injection device through the high-pressure water pipe, so as to avoid repairing the live equipment in dangerous waters. It eliminates the safety hazards caused by water leakage in the power line and electrical equipment.

[0022] The filter of the present invention can realize uninterrupted water supply, has a self-cleaning function, is not easy to be blocked, is easy to install, and can meet the water quality requirements of different irrigation projects. The water quality treated by the filter does not need to be filtered again, and can meet the standard requirements of the drip irrigation system, which reduces the equipment cost and labor intensity and improves the economic benefits.

[0023] After practical application, the economic indicators that can be achieved include: (1) It can reduce the energy consumption of the first system of the irrigation system (down by about 25%); (2) It can well meet the high standard requirements of water quality conditions when using surface water in the drip irrigation system. After reaching full production, the annual construction area required should reach more than 50,000 mu, and its output value will reach more than 3 million yuan; (3) Taking cotton as an example, if the seed cotton yield increases by 20 kg per mu, the added value is 160 yuan per mu, and the economic benefits of farmland are greatly improved.

[0024] The pre-pump filter of the present invention can not only greatly reduce the energy consumption of water filtration treatment and the possibility of clogging of the irrigation device, but also significantly improve the uniformity of irrigation. It has a reasonable structure, is economical and practical, and is specially used for filtering surface water with high impurity content for drip irrigation. It uses high-pressure pump water flow, combined with a disturbance device, to achieve spraying from the inside to the outside or from the outside to the inside to improve the self-cleaning effect of the filter, and improve the automatic backwashing and filtration efficiency, which is safe and convenient. In addition, the self-cleaning method provided can continuously clean impurities, and the adhesion on the filter always maintains a certain balance, ensuring that the filter can work normally. It is economical and practical, greatly improving the self-cleaning effect of the filter, and improving the automatic backwashing and filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of the pre-pump filter in Example 1 of the present invention.

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the invented pump pre-filter from another angle.

[0027] Figure 3 It is a schematic diagram of the main structure of the pre-pump filter of the invention.

[0028] Figure 4 for Figure 3 Schematic diagram of the left view structure after partial sectioning.

[0029] Figure 5 This is a schematic diagram of the top view of the structure of the pre-pump filter after removing the float.

[0030] Figure 6 This is a schematic diagram of the main structure of the invented pre-pump filter after removing the float.

[0031] Figure 7 for Figure 5 Schematic diagram of the structure viewed in the AA direction.

[0032] Figure 8 for Figure 6 Schematic diagram of the structure viewed in the BB direction.

[0033] Fig. 9 This is a schematic structural diagram of the installation position relationship of the high-pressure pump, reducer, cantilever pipeline, and vortex high-pressure injection device in Example 1 of the present invention.

[0034] Fig.10 This is a schematic structural diagram of the installation position relationship between the vortex disturbance component and the high-pressure injection component of the vortex high-pressure injection device in Example 1 of the present invention.

[0035] Fig.11 This is a working principle diagram of the self-cleaning method for the pre-pump filter in Example 1 of the present invention.

[0036] Fig.12 It is a schematic structural diagram of the installation position relationship of the high-pressure pump, reducer, cantilever pipeline, vortex disturbance component and high-pressure injection component in the vortex high-pressure injection device in Example 2 of the present invention.

[0037] Fig.13 for Fig.12 Schematic diagram of the installation position relationship structure of the vortex disturbance component and the high-pressure injection component in the vortex high-pressure injection device after removing the filter cylinder.

[0038] As shown in the figure: 1 is the motor shield, 2 is the large shield, 3 is the float, 4 is the filter mesh cylinder, 5 is the bracket, 6 is the vortex high-pressure injection device, 7 is the water outlet, 8 is the float support rod, 9 is the reducer, 10 is the conversion device, 11 is the high-pressure hose, 12 is the high-pressure water inlet, 13 is the high-pressure pump, 14 is the cantilever pipe, 15 is the high-pressure nozzle, 16 is the support pipe, 17 is the front push plate, 18 is the semi-open shell cover, 19 is impurities, 20 is the vertical pipe, 21 is the horizontal pipe, 22 is the mesh cylinder bottom plate, 23 is the vortex disturbance part, and 24 is the high-pressure injection part. DETAILED DESCRIPTION

[0039] The technical solutions of the embodiments of the present invention are explained and illustrated below in conjunction with the drawings of the embodiments, but the following embodiments are only preferred embodiments of the present invention and are not all of them; based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without making any creative work all belong to the protection scope of the present invention.

[0040] Embodiment 1: Reference Figure 1-Figure 10 , is a structural schematic diagram of an embodiment of the present invention, a vortex and high-pressure spray pump pre-filter for irrigation, whose structure mainly includes a bracket 5, a filter screen cylinder 4, a water outlet 7 is provided at the lower end of the filter screen cylinder 4, and also includes a driving mechanism, a cantilever pipe 14, a vortex high-pressure injection device 6, a high-pressure hose 11 and a high-pressure water inlet 12; the driving mechanism is arranged above the filter screen cylinder 4, the driving mechanism includes a reducer 9, the high-pressure hose 11 is connected to the power output shaft of the reducer 9 through a conversion device 10, that is, a rotary joint, the power output shaft is a hollow pipe shaft, the power output shaft is connected to the cantilever pipe 14 below, and vortex high-pressure injection devices 6 are respectively provided on both sides of the cantilever pipe 14, and the cantilever pipe 14 and the vortex high-pressure injection device 6 are driven by the power output shaft to rotate relative to the filter screen cylinder 4 with the axis of the filter screen cylinder 4 as the center.

[0041] The vortex high-pressure injection device 6 includes a vortex disruptor 23 and a high-pressure injection member 24 .

[0042] The structure of the vortex disturbance member 23 includes a semi-open shell 18 and a front push plate 17 . The front push plate 17 is installed on one side of the semi-open shell 18 , extends forward and is close to the outer wall of the filter screen cylinder 4 .

[0043] The structure of the high-pressure injection component 24 includes a support tube 16 and a high-pressure nozzle 15 arranged on the support tube. The support tube 16 and the high-pressure nozzle 15 are arranged inside a semi-open shell cover 18 and are connected to the cantilever pipe 14. The vortex disturbance component 23 and the high-pressure injection component 24 are both arranged on the outside of the filter screen cylinder 4.

[0044] The structure of the present invention further includes a high-pressure pump 13 , which is disposed above the filter screen cylinder 4 , and a water outlet of the high-pressure pump 13 is connected to the high-pressure hose 11 .

[0045] The opening of the semi-open shell cover 18 faces the side wall of the filter screen cylinder 4, and a plurality of high-pressure nozzles 15 are arranged on the support tube 16 at intervals, and the opening of the high-pressure nozzle 15 also faces the side wall of the filter screen cylinder 4; the arrangement direction of the semi-open shell cover 18 and the support tube 16 is vertically parallel to the side wall of the filter screen cylinder 4.

[0046] The front push plate 17 is made of elastic material, and the distance between the front push plate 17 and the outer wall of the filter screen cylinder 4 is a preset gap, and the preset gap is adjustable.

[0047] The structure of the present invention also includes a buoy 3 and a buoy support rod 8, the buoy 3 is fixed on the buoy support rod 8, a large shield 2 is arranged on the upper end of the filter screen cylinder 4, and a motor shield 1 is arranged above the high-pressure pump and the driving mechanism.

[0048] The working principle of the pre-pump filter of the present invention: The filter screen cylinder 4 is placed in sewage, and the sewage flows from the outside to the inside of the filter screen cylinder 4 with a rotating surface, and the impurities intercepted by the filter screen cylinder 4 adhere to the filter screen cylinder or remain outside the filter screen cylinder; when the front push plate 17 in front of the vortex disturbance member 23 is close to the filter screen and slides across the screen surface, some impurities are peeled off by the front push plate, and as the vortex disturbance member 23 rotates, the water flow from outside to inside is cut off, and interacts with the centrifugal water flow to form a vortex, which separates some large impurities adhered to the filter screen and pushes them to the water area away from the filter screen.

[0049] When the vortex disturbance piece 23 rotates close to the surface of the filter cylinder 4, a dynamic negative pressure zone will be formed behind the vortex disturbance piece 23. Under the action of the negative pressure, the filtered clean water is sucked out of the cylinder to form a dynamic jet-like water flow. The jet-like water flow is divided by the mesh to form a stream of water that is ejected from the inside to the outside. The water flow has a strong impact force and will effectively wash away the impurities that continue to adhere to the filter. In combination with the high-pressure water flow sprayed by the high-pressure nozzle, the impurities on the filter that the vortex disturbance piece 23 has just passed through are washed away.

[0050] Under the action of this cyclical movement, the mesh surface of the filter is effectively cleaned and clean water is continuously pumped away to ensure that the filter can work normally.

[0051] Embodiment 2: Reference Fig.11 , a self-cleaning method for a filter before an eddy current and high-pressure spray pump for irrigation, mainly comprising the following steps: (i) The filter screen cylinder 4 is placed in sewage, and the sewage flows from the outside to the inside of the filter screen cylinder 4 having a rotating surface, and the impurities intercepted by the filter screen cylinder 4 adhere to the filter screen cylinder 4 or remain outside the filter screen cylinder 4; (ii) The high-pressure pump 13 is turned on, and the high-pressure water flows through the high-pressure hose 11 and the cantilever pipe 14, and is transported to the high-pressure nozzle 15 of the vortex high-pressure injection device 6. The high-pressure water flow ejected from the high-pressure nozzle 15 impacts the filter screen cylinder 4 from outside to inside or from inside to outside, and cleans the impurities attached to the filter screen cylinder 4; (III) The vortex high-pressure jet device 6 rotates, and the front push plate 17 at the front closely adheres to the filter screen cylinder 4 and slides across the screen surface. Some impurities are peeled off by the front push plate 17. As the vortex high-pressure jet device 6 rotates, the water flow from outside to inside is cut off, and interacts with the centrifugal water flow to form a vortex, which separates some large impurities adhering to the filter screen cylinder 4 and pushes them to the water area away from the filter screen; (IV) The front push plate 17 is close to the surface of the filter screen 4, and a dynamic negative pressure zone is formed behind the front push plate 17. Under the action of negative pressure, the filtered clean water is sucked out of the filter screen to form a dynamic jet-like water flow. The jet-like water flow is divided by the mesh to form a stream of water jetting from the inside to the outside. The water flow has a strong impact force and will continue to wash away the impurities adhering to the filter screen, completing the negative pressure jet cleaning; (V) With the rotation of the eddy current high pressure jet device 6, the impurities on the filter screen cylinder 4 will be repeatedly cleaned, and the adhesion of the impurities on the filter screen always maintains a certain balance, thereby realizing the self-cleaning of the filter screen cylinder.

[0052] Embodiment 3: See attached Fig.12 , Attachment Fig.13 Compared with Example 1, the difference lies in that the vortex disturbance member 23 is arranged on the outside of the filter screen cylinder 4, and the support tube 16 and the high-pressure nozzle 15 are arranged on the inside of the filter screen cylinder 4, the position corresponds to the vortex disturbance member 23 on the outside, and is connected to the cantilever pipe 14 through a pipeline.

[0053] When the support pipe 16 and the high-pressure nozzle 15 are arranged on the inner side of the filter screen cylinder 4, the pipeline connected to the cantilever pipe 14 includes a vertical pipe 20 arranged below the cantilever pipe and horizontal pipes 21 arranged on both sides of the vertical pipe. The cantilever pipe 14 is connected to the support pipes 16 on both sides through the vertical pipe 20 and the horizontal pipe 21.

[0054] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention will be included in the protection scope of the claims.

Claims

1. A vortex and high-pressure spray pump pre-filter for irrigation, the structure of which mainly includes a bracket and a filter screen cylinder, and the lower end of the filter screen cylinder is provided with a water outlet, characterized in that It also includes a driving mechanism, a cantilever pipe, a vortex high-pressure injection device, a high-pressure hose and a high-pressure water inlet; the driving mechanism is arranged above the filter screen cylinder, the driving mechanism includes a reducer, the high-pressure hose is connected to the power output shaft of the reducer through a conversion device, the power output shaft is a hollow pipe shaft, the power output shaft is connected to the cantilever pipe below, and vortex high-pressure injection devices are respectively provided on both sides of the cantilever pipe, the vortex high-pressure injection device injects high-pressure water from the inside or outside of the filter screen cylinder to form a vortex to clean the filter screen cylinder; the cantilever pipe and the vortex high-pressure injection device are driven by the power output shaft and rotate relative to the filter screen cylinder with the axis of the filter screen cylinder as the center.

2. The vortex and high pressure spray pump pre-filter for irrigation as claimed in claim 1, characterized in that The eddy current high-pressure injection device comprises an eddy current disturbing member and a high-pressure injection member; The structure of the vortex disturbance element includes a semi-open shell and a front push plate, wherein the front push plate is installed on one side of the semi-open shell, extends forward and is close to the outer wall of the filter cylinder; The structure of the high-pressure injection member includes a support tube and a high-pressure nozzle arranged on the support tube, the support tube and the high-pressure nozzle are arranged inside the semi-open shell cover and are connected to the cantilever pipe, and the vortex disturbance member and the high-pressure injection member are both arranged on the outside of the filter cylinder; Alternatively, the vortex disturbance member is arranged on the outside of the filter screen cylinder, and the support pipe and the high-pressure nozzle are arranged on the inside of the filter screen cylinder, the position corresponds to the vortex disturbance member on the outside, and is connected to the cantilever pipe through a pipeline.

3. The vortex and high pressure spray pump pre-filter for irrigation according to claim 1 or 2, characterized in that The structure also includes a high-pressure pump, which is arranged above the filter screen cylinder, and a water outlet of the high-pressure pump is connected to a high-pressure hose.

4. The vortex and high pressure spray pump pre-filter for irrigation as claimed in claim 3, characterized in that The opening of the semi-open shell cover faces the side wall of the filter cylinder, and a plurality of high-pressure nozzles are arranged on the support tube at intervals, and the openings of the high-pressure nozzles also face the side wall of the filter cylinder; the semi-open shell cover and the support tube are arranged vertically and parallel to the side wall of the filter cylinder.

5. The vortex and high pressure spray pump pre-filter for irrigation as claimed in claim 2, characterized in that The front push plate is made of elastic material, and the distance between the front push plate and the outer wall of the filter screen cylinder is a preset gap, and the preset gap is adjustable.

6. The vortex and high pressure spray pump pre-filter for irrigation as claimed in claim 4, characterized in that The front push plate is made of elastic material, and the distance between the front push plate and the outer wall of the filter screen cylinder is a preset gap, and the preset gap is adjustable.

7. The vortex and high pressure spray pump pre-filter for irrigation as claimed in claim 6, characterized in that Its structure also includes a buoy and a buoy support rod, the buoy is fixed on the buoy support rod, a large shield is arranged on the upper end of the filter screen cylinder, and a motor shield is arranged above the driving mechanism.

8. The vortex and high pressure spray pump pre-filter for irrigation as claimed in claim 1 or 2, characterized in that When the support pipe and the high-pressure nozzle are arranged on the inner side of the filter screen cylinder, the pipeline connected to the cantilever pipe includes a vertical pipe arranged below the cantilever pipe and horizontal pipes arranged on both sides of the vertical pipe. The cantilever pipe is connected to the support pipes on both sides through the vertical pipe and the horizontal pipe.

9. The vortex and high pressure spray pump pre-filter for irrigation as claimed in claim 7, characterized in that When the support pipe and the high-pressure nozzle are arranged on the inner side of the filter screen cylinder, the pipeline connected to the cantilever pipe includes a vertical pipe arranged below the cantilever pipe and horizontal pipes arranged on both sides of the vertical pipe. The cantilever pipe is connected to the support pipes on both sides through the vertical pipe and the horizontal pipe.

10. A self-cleaning method for the filter before the vortex and high-pressure spray pump for irrigation, characterized in that The main steps include: (i) The filter cylinder is placed in sewage, and the sewage flows from the outside to the inside of the filter cylinder having a rotating surface, and the impurities intercepted by the filter cylinder adhere to the filter cylinder or remain outside the filter cylinder; (ii) The high-pressure pump is turned on, and the high-pressure water flows through the high-pressure hose and the cantilever pipe and is transported to the high-pressure nozzle of the vortex high-pressure injection device. The high-pressure water flow ejected from the high-pressure nozzle impacts the filter cylinder from the outside to the inside or from the inside to the outside, cleaning the impurities attached to the filter cylinder; (III) The vortex high-pressure jet device rotates, and the front push plate at the front closely adheres to the filter screen cylinder and slides across the screen surface. A small part of the impurities are peeled off by the front push plate. As the vortex high-pressure jet device rotates, the water flow from outside to inside is cut off, and interacts with the centrifugal water flow to form a vortex, which separates some large impurities adhering to the filter screen cylinder and pushes them to the water area away from the filter screen; (IV) The front push plate passes over the surface of the filter screen, forming a dynamic negative pressure zone behind the front push plate. Under the action of negative pressure, the filtered clean water is sucked out of the filter screen to form a dynamic jet-like water flow. The jet-like water flow is divided by the mesh to form a stream of water that is ejected from the inside to the outside. The water flow has a strong impact force and will continue to wash away the impurities adhering to the filter screen, completing the negative pressure jet cleaning; (V) As the eddy current high pressure jet device rotates, the impurities on the filter cylinder will be repeatedly cleaned, and the adhesion of impurities on the filter will always maintain a certain balance, thus achieving self-cleaning of the filter cylinder.

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