Loss-preventing impoundment device for farmland irrigation on sloping field

Abstract

The invention relates to the technical field of agricultural water saving, and provides a slope farmland irrigation anti-loss impoundment device which comprises a storage tank and a collecting tank. An anti-loss structure is arranged at the top end of the storage tank, a collecting tank is mounted at the front end of the storage tank, and a drain outlet is mounted on one side of the bottom end of the storage tank; the anti-loss structure comprises an intercepting plate which is installed at the top end of the storage box, a flow guide plate is installed at the bottom end of the intercepting plate, fixing plates are installed on the two sides of the top end of the intercepting plate, and an annular pipe is installed at the bottom end of the flow guide plate. By arranging the anti-loss structure, when the slope farmland is irrigated, loss irrigation water can be collected and stored through the storage box, loss and waste of the irrigation water are reduced, impurities such as weeds, miscellaneous leaves and stones in the loss irrigation water can be intercepted through the intercepting net in the intercepting plate, and the irrigation water is prevented from being polluted. Therefore, the lost irrigation water is primarily filtered, and the quality of the filtered lost irrigation water is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of agricultural water-saving technology, and in particular to a device for preventing water loss and retaining water during irrigation of sloping farmland. Background Technology

[0002] Sloping farmland, also known as sloping cultivated land, refers to agricultural land distributed on hillsides with a certain slope. It is an important arable land resource in mountainous and hilly areas. Its core characteristics are uneven ground and slope. In the irrigation process of such sloping farmland, irrigation water is very prone to flowing down the slope to the bottom, causing it to run away before the soil is thoroughly irrigated. This not only results in poor irrigation efficiency but also easily carries away soil, causing soil erosion. Consequently, a large amount of agricultural water is needed to thoroughly irrigate the soil on sloping land. To save agricultural water, it is necessary to intercept and store the runoff irrigation water and recycle it for reuse. This interception and storage is achieved using a sloping farmland irrigation runoff prevention and retention device to solve the above-mentioned problems. Summary of the Invention

[0003] The purpose of this invention is to provide a water-saving and water-retaining device for irrigation of sloping farmland, which solves the problem that in existing sloping farmland irrigation, the irrigation water flows down the slope to the bottom of the slope, causing the water to run off before it can thoroughly irrigate the soil. This not only results in poor irrigation effect, but also easily carries away soil during water flow, causing soil erosion. As a result, a large amount of agricultural water is needed to thoroughly irrigate the soil when irrigating sloping land, which leads to waste of agricultural water.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a slope farmland irrigation anti-leakage interception device, including a storage tank and a collection trough; the top of the storage tank is provided with an anti-leakage structure, the front end of the storage tank is installed with a collection trough, and a sewage outlet is installed on one side of the bottom end of the storage tank; The anti-loss structure includes an interception plate, which is installed on the top of the storage tank. A guide plate is installed at the bottom of the interception plate. Fixing plates are installed on both sides of the top of the interception plate. An annular tube is installed at the bottom of the guide plate. A fan blade is installed inside the bottom of the annular tube. A worm gear is installed at one end of the fan blade. The interceptor plate has a movable groove inside, and a limiting seat is installed inside the movable groove. A fixed seat is installed at one end of the limiting seat. Limit rods are installed inside the upper and lower ends of the fixed seat. A fixing plate is installed at the top of the limiting rod. A spring is installed on the outside of the limiting rod. An installation shaft is installed inside the fixed seat. A gear is installed on the outside of one end of the installation shaft. A scraper is installed on one side of the gear. A toothed plate is installed on one side of the fixed plate. Teeth are installed on both sides of the top of the toothed plate.

[0005] Preferably, a mounting bracket is installed on one side of the fixing plate, a reciprocating lead screw is installed inside the mounting bracket, a threaded sleeve is installed on the outside of the reciprocating lead screw, one side of the threaded sleeve is movably connected to one end of the mounting shaft, a timing belt is installed on the outside of one end of the reciprocating lead screw, a worm gear is installed on one end of the timing belt, a limit plate is installed on the outside of the worm gear, one end of the limit plate is fixed to one side of the storage tank, and a protective shell is installed on the outside of the limit plate.

[0006] Preferably, the two ends of the spring are connected to the bottom end of the fixing plate and the top end of the fixing seat, respectively, and the fixing plate and the fixing seat form a telescopic structure.

[0007] Preferably, the mounting shaft passes through the interior of the limiting seat and the fixed seat, and the mounting shaft forms a rotatable connection with the limiting seat and the fixed seat.

[0008] Preferably, the mounting shaft has limit holes at both the top and bottom ends, and one end of the limit rod is inserted into the limit hole.

[0009] Preferably, the limiting seat moves inside the moving groove, and the limiting seat and the moving groove form a limiting and guiding connection.

[0010] Preferably, there are two sets of limiting rods, which are symmetrically distributed at the upper and lower ends of the fixed base.

[0011] Preferably, an intercepting block is installed at the middle position of the bottom of the storage box, an overflow port is installed on one side of the storage box, a collection box is installed at the bottom of the overflow port, a water inlet is provided at the bottom of the collection box, and a separation structure is provided inside the storage box.

[0012] Preferably, the separation structure includes a separation tube installed inside the storage tank, a fixing frame installed on the outer side of one end of the separation tube, a spiral blade shaft installed inside the separation tube, a connecting plate installed at one end of the spiral blade shaft, a fixing plate installed at the top of the connecting plate, the fixing plate installed on the outer side of one end of the fan blade, and a separation net installed on the outer side of one end of the interceptor plate.

[0013] Preferably, a plurality of blades are provided on the outer side of the spiral blade shaft, and the plurality of blades are arranged at equal intervals on the outer side of the spiral blade shaft.

[0014] The present invention provides a water runoff prevention and retention device for irrigation of sloping farmland, which has the following advantages: By setting up an anti-loss structure, when irrigating sloping farmland, the use of the storage box can collect and store the lost irrigation water, reducing the loss and waste of irrigation water. Furthermore, the use of the interception net inside the interception plate can intercept impurities such as weeds, leaves, and stones in the lost irrigation water, thereby performing a preliminary filtration of the lost irrigation water and ensuring the quality of the filtered irrigation water. Furthermore, the annular pipe adopts a tapering structure that is thicker at the top and thinner at the bottom. According to Bernoulli's principle, as the cross-sectional area through which the water flows decreases, the flow velocity increases proportionally, achieving an initial acceleration of the runoff irrigation water. Moreover, the annular design of the pipe can utilize the combined effect of rotation and gravity to further accelerate the flow of the runoff irrigation water, enhancing the dynamics of the water flow. Furthermore, when the water flow impacts the fan blades, it drives the reciprocating screw to rotate. Through the engagement between the reciprocating screw and the sleeve, the mounting shaft moves to one side. Since only half of the teeth are set on the outer side of the gear, the gear will contact the teeth at the top of the tooth plate when it moves to one side. When the gear has finished moving on the surface of the teeth, the mounting shaft and the gear have rotated 180°, which drives the scraper to rotate 180° and vertically fit against the surface of the interceptor plate. Through the half-tooth engagement of the gear and the elastic limit of the spring, the reversal is precise and stable. It can automatically lock the posture of the scraper without additional power or manual adjustment. Moreover, the power of the entire mechanism comes from the kinetic energy of the water flow driving the fan blades. It does not add external equipment such as motors and cylinders, which is suitable for the problem of difficult to install power lines in sloping farmland. Furthermore, the above-mentioned structure enables precise cleaning of impurities without interfering with water flow recycling. It not only solves the drawbacks of traditional scrapers that are not thorough in cleaning and carry back impurities, but also provides a stable guarantee for irrigation water recycling through a powerless linkage design. With a separation structure, the spiral blade conveys runoff irrigation water as it rotates. When the runoff irrigation water passes the separation net, the net performs secondary filtration, leaving the sediment inside the net and being discharged by the spiral blade. The filtered runoff irrigation water falls into a sedimentation tank on one side of the interception block. The spiral blade is directly driven to rotate by the fan blades, eliminating the need for an additional motor. One power source simultaneously drives the scraper cleaning and spiral sand conveying functions, maximizing the simplification of the transmission structure and perfectly adapting to the working conditions of sloping farmland without power supply. Farmers do not need to bear the electricity bills and motor maintenance costs, thus achieving the separation of sediment and water. Attached Figure Description

[0015] Figure 1This is a frontal three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the present invention viewed from below; Figure 3 This is a frontal cross-sectional three-dimensional structural schematic diagram of the present invention; Figure 4 This is a rear-view three-dimensional structural diagram of the present invention; Figure 5 This is a partial three-dimensional structural diagram of the anti-leakage structure of the present invention. Figure 6 for Figure 5 A magnified view of the structure at point A in the middle; Figure 7 This is a three-dimensional structural diagram of the anti-leakage structure of the present invention, viewed from below. Figure 8 This is a frontal three-dimensional structural diagram of the fixing plate of the present invention; Figure 9 for Figure 8 A magnified schematic diagram of the structure at point B in the middle; Figure 10 This is a frontal three-dimensional structural schematic diagram of the reciprocating lead screw of the present invention; Figure 11 This is a frontal three-dimensional structural diagram of the toothed plate of the present invention.

[0016] The following are the annotations in the diagram: 1. Storage tank; 2. Anti-leakage structure; 201. Interception plate; 202. Scraper; 203. Fixing plate; 204. Guide plate; 205. Annular pipe; 206. Mounting bracket; 207. Synchronous belt; 208. Limiting plate; 209. Worm gear; 2010. Worm wheel; 2011. Fan blade; 2012. Gear plate; 2013. Tooth; 2014. Gear; 2015. Mounting shaft; 2016. Fixing base; 2017. 1. Moving trough; 2018. Limit seat; 2019. Reciprocating screw; 2020. Screw sleeve; 2021. Fixing plate; 2022. Spring; 2023. Limit rod; 3. Collection trough; 4. Protective shell; 5. Sewage outlet; 6. Separation structure; 601. Separation pipe; 602. Separation net; 603. Spiral blade shaft; 604. Fixing frame; 605. Connecting plate; 606. Fixing plate; 7. Interception block; 8. Collection box; 9. Water inlet; 10. Overflow outlet. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-11 The present invention provides a slope farmland irrigation anti-leakage interception device, including a storage tank 1 and a collection trough 3; the top of the storage tank 1 is provided with an anti-leakage structure 2, the front end of the storage tank 1 is installed with a collection trough 3, and a sewage outlet 5 is installed on one side of the bottom end of the storage tank 1.

[0019] Reference Figures 1-11 As shown, the anti-loss structure 2 includes an interceptor plate 201, which is installed on the top of the storage tank 1. A guide plate 204 is installed at the bottom of the interceptor plate 201. Fixing plates 203 are installed on both sides of the top of the interceptor plate 201. An annular pipe 205 is installed at the bottom of the guide plate 204. A fan blade 2011 is installed inside the bottom of the annular pipe 205. A worm gear 2010 is installed at one end of the fan blade 2011. The interceptor plate 201 has a moving groove 2017 inside. A limit seat 2018 is installed inside the moving groove 2017. A fixed seat 2016 is installed at one end of the limit seat 2018. Limit rods 2023 are installed inside the upper and lower ends of the fixed seat 2016. A fixing plate 2021 is installed at the top of the limit rod 2023. A spring 2022 is installed on the outside of the limit rod 2023. An installation shaft 2015 is installed inside the fixed seat 2016. A gear 2014 is installed on the outside of one end of the installation shaft 2015. A scraper 202 is installed on one side of the gear 2014. A toothed plate 2012 is installed on one side of the fixed plate 203. Teeth 2013 are installed on both sides of the top of the toothed plate 2012. A mounting bracket 206 is installed on one side of the fixed plate 203. A reciprocating screw 2019 is installed inside the mounting bracket 206. A threaded sleeve 2020 is installed on the outside of the reciprocating screw 2019. One side of the threaded sleeve 2020 is movably connected to one end of the mounting shaft 2015. A timing belt 207 is installed on the outside of one end of the reciprocating screw 2019. A worm gear 209 is installed on one end of the timing belt 207. A limit plate 208 is installed on the outside of the worm gear 209. One end of the limit plate 208 is fixed to one side of the storage tank 1. A protective shell 4 is installed on the outside of the limit plate 208. The two ends of the spring 2022 are connected to the bottom end of the fixing plate 2021 and the top end of the fixing base 2016 respectively, and the fixing plate 2021 and the fixing base 2016 form a telescopic structure. The mounting shaft 2015 passes through the interior of the limiting seat 2018 and the fixed seat 2016, and the mounting shaft 2015 forms a rotatable connection with the limiting seat 2018 and the fixed seat 2016; the mounting shaft 2015 has limiting holes at both the upper and lower ends, and one end of the limiting rod 2023 is inserted into the limiting hole; the limiting seat 2018 moves inside the moving groove 2017, and the limiting seat 2018 and the moving groove 2017 form a limiting guide connection; two sets of limiting rods 2023 are provided, and the two sets of limiting rods 2023 are symmetrically distributed at the upper and lower ends of the fixed seat 2016.

[0020] Before irrigating the sloping farmland, the storage tank 1 is installed at the bottom of the slope. After installation, when irrigating the sloping farmland, the irrigation water will flow down the slope, causing the lost irrigation water to flow into the storage tank 1. The storage tank 1 collects and stores the lost irrigation water, reducing waste. When the irrigation water passes the interception plate 201, the interception mesh inside the plate 201 intercepts impurities such as weeds, leaves, and stones, thus performing preliminary filtration and ensuring the quality of the filtered irrigation water. The filtered irrigation water then falls into the guide plate 204. Due to the shape of the guide plate 204... The tube is funnel-shaped, which guides the runoff irrigation water, allowing it to fall from the bottom of the guide plate 204 into the interior of the annular pipe 205. The annular pipe 205 has a tapering structure, wider at the top and narrower at the bottom. According to Bernoulli's principle, as the cross-sectional area through which the water flows decreases, the flow velocity increases proportionally, achieving initial acceleration of the runoff irrigation water. Furthermore, the annular design of the annular pipe 205 can utilize the combined effect of rotation and gravity to further accelerate the flow of the runoff irrigation water, increasing the water flow's dynamics. The annular design of the annular pipe 205 avoids kinetic energy dispersion. The annular structure constrains the water flow gathered by the guide plate 204 into a uniform annular columnar flow, rather than a divergent water jet, ensuring that when the water impacts the fan blade 2011, it acts precisely on the target surface. The blades rotate around the entire circumference, improving the utilization of water flow. When the fan blade 2011 rotates, it drives the worm gear 2010 to rotate. The worm gear 2010, in turn, drives the worm 209 to rotate. The worm 209, through its interaction with the timing belt 207, drives the reciprocating screw 2019 to rotate. The reciprocating screw 2019, through its interaction with the threaded sleeve 2020, drives the mounting shaft 2015 to move to one side. This movement of the mounting shaft 2015 causes the limit seat 2018 to slide within the moving groove 2017, guiding its movement. This movement of the mounting shaft 2015 then drives the gear 2014 to move. Because the outer side of the gear 2014 only has half the number of teeth, the teeth... When wheel 2014 moves to one side, it contacts the teeth 2013 at the top of gear plate 2012. The number of teeth in teeth 2013 matches the number of teeth on the surface of gear 2014, so that when gear 2014 has finished moving on the surface of teeth 2013, mounting shaft 2015 and gear 2014 have rotated exactly 180°. When mounting shaft 2015 rotates, it will squeeze the limiting rod 2023 out of the limiting hole on one end surface of mounting shaft 2015. When the limiting rod 2023 moves, it will stretch spring 2022. After mounting shaft 2015 has rotated 180°, the limiting holes at the bottom and top ends have exchanged positions. At this time, under the elastic action of spring 2022, it inserts into the limiting hole, fixing mounting shaft 2015 and preventing further rotation.After gear 2014 rotates 180°, it drives scraper 202 to rotate 180° as well, making it perpendicular to the surface of interceptor plate 201. At this time, as threaded sleeve 2020 moves across the surface of reciprocating screw 2019, scraper 202 scrapes impurities from the surface of interceptor plate 201. When scraper 202 reaches its end, threaded sleeve 2020 drives scraper 202 to move back. Simultaneously, another set of teeth 2013, through meshing with the outer side of gear 2014, rotates back another 180° as scraper 202 moves back, causing scraper 202 to lay horizontally on interceptor plate 201. To prevent the scraper 202 from pushing impurities upwards during its return movement, thus affecting the cleaning effect, the scraper 202 is designed to vertically adhere to the surface of the interceptor plate 201 during unidirectional scraping. This efficiently removes straw, weeds, clumps of mud, and other impurities adhering to the surface of the interceptor plate 201. The scraping direction is consistent with the natural sliding direction of the impurities, ensuring that the impurities are pushed into the interior of the collection trough 3. During the return stroke, the scraper 202 automatically rotates 180° and lays horizontally on the surface of the interceptor plate 201, completely detaching itself from the impurity accumulation area and preventing impurities from being carried back to the top of the interceptor plate 201, thereby improving the cleaning effect. The semi-gear meshing of gear 2014 and the elastic limit of spring 2022 achieve precise and stable reversal, automatically locking the attitude of scraper 202 without additional power or manual adjustment. The entire mechanism is powered by the kinetic energy of water-driven fan blade 2011, without adding external equipment such as motors or cylinders. This addresses the problem of difficult power line installation on sloping farmland. Directional scraping can intercept most of the large-volume impurities, preventing straw, weeds, etc. from entering the subsequent filtration stage and reducing the load on subsequent sediment separation. The above structure enables precise cleaning of impurities without interfering with water flow recovery. It solves the shortcomings of traditional scrapers that are not thorough in cleaning and carry back impurities, and provides a stable guarantee for irrigation water recovery through the powerless linkage design.

[0021] Reference Figures 1-7 As shown, an interception block 7 is installed at the middle position of the bottom of the storage tank 1, an overflow port 10 is installed on one side of the storage tank 1, a collection box 8 is installed at the bottom of the overflow port 10, a water inlet 9 is provided at the bottom of the collection box 8, and a separation structure 6 is provided inside the storage tank 1. The separation structure 6 includes a separation tube 601, which is installed inside the storage tank 1. A fixing bracket 604 is installed on the outer side of one end of the separation tube 601. A spiral blade shaft 603 is installed inside the separation tube 601. A connecting plate 605 is installed at one end of the spiral blade shaft 603. A fixing plate 606 is installed at the top of the connecting plate 605. The fixing plate 606 is installed on the outer side of one end of the fan blade 2011. A separation net 602 is installed on the outer side of one end of the interceptor plate 201. Several blades are arranged on the outer side of the spiral blade shaft 603, and the blades are arranged at equal intervals on the outer side of the spiral blade shaft 603.

[0022] After screening, the lost irrigation water flows into the separation pipe 601. At this time, the rotating fan blades 2011 drive the spiral blade shaft 603 to rotate through the cooperation between the fixed disk 606 and the connecting disk 605. The spiral blade shaft 603 transports the lost irrigation water as it rotates. When the lost irrigation water passes the separation net 602, the separation net 602 performs secondary filtration, leaving the sediment inside the separation net 602, which is then discharged by the spiral blade shaft 603. The filtered lost irrigation water falls into the sedimentation tank on one side of the interception block 7. The spiral blade shaft 603 is directly driven to rotate through the cooperation between the fixed disk 606 and the connecting disk 605, without the need for additional... An external motor, a single power source, simultaneously drives the scraper 202 for cleaning and the spiral conveyor for sand transport, maximizing the simplification of the transmission structure and perfectly adapting to the working conditions of sloping farmland without power supply. Farmers do not need to bear the electricity bills and motor maintenance costs. The irrigation water after secondary filtration will settle inside the sedimentation tank, and the clear water on the top will overflow the interception block 7 and enter the storage tank on the other side of the interception block 7 for irrigation. The storage tank can also discharge the overflow water through the overflow port 10 and store it inside the collection box 8, thus completing the work of preventing the loss of irrigation water when irrigating sloping farmland, and filtering and recycling the lost irrigation water to reduce the loss of irrigation water and achieve water conservation in agriculture.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for preventing water loss and retaining water during irrigation in sloping farmland, comprising a storage tank (1) and a collection trough (3); Its features are: The top of the storage box (1) is provided with an anti-leakage structure (2), the front end of the storage box (1) is provided with a collection trough (3), and a sewage outlet (5) is provided on one side of the bottom end of the storage box (1). The anti-loss structure (2) includes an interceptor plate (201), which is installed on the top of the storage tank (1). A guide plate (204) is installed at the bottom of the interceptor plate (201). Fixing plates (203) are installed on both sides of the top of the interceptor plate (201). An annular tube (205) is installed at the bottom of the guide plate (204). A fan blade (2011) is installed inside the bottom of the annular tube (205). A worm gear (2010) is installed at one end of the fan blade (2011). The interceptor plate (201) has a moving groove (2017) inside. A limiting seat (2018) is installed inside the moving groove (2017). A fixed seat (2016) is installed at one end of the limiting seat (2018). Limiting rods (2023) are installed inside the upper and lower ends of the fixed seat (2016). A fixing piece (2021) is installed at the top of the limiting rod (2023). A spring (2022) is installed on the outside of the limiting rod (2023). An installation shaft (2015) is installed inside the fixed seat (2016). A gear (2014) is installed on the outside of one end of the installation shaft (2015). A scraper (202) is installed on one side of the gear (2014). A toothed plate (2012) is installed on one side of the fixed plate (203). Teeth (2013) are installed on both sides of the top of the toothed plate (2012).

2. The irrigation and waterlogging prevention device for sloping farmland according to claim 1, characterized in that: A mounting bracket (206) is installed on one side of the fixed plate (203). A reciprocating screw (2019) is installed inside the mounting bracket (206). A threaded sleeve (2020) is installed on the outside of the reciprocating screw (2019). One side of the threaded sleeve (2020) is movably connected to one end of the mounting shaft (2015). A timing belt (207) is installed on the outside of one end of the reciprocating screw (2019). A worm gear (209) is installed on one end of the timing belt (207). A limiting plate (208) is installed on the outside of the worm gear (209). One end of the limiting plate (208) is fixed to one side of the storage box (1). A protective shell (4) is installed on the outside of the limiting plate (208).

3. The irrigation and waterlogging prevention and retention device for sloping farmland according to claim 1, characterized in that: The two ends of the spring (2022) are connected to the bottom end of the fixing plate (2021) and the top end of the fixing seat (2016) respectively, and the fixing plate (2021) and the fixing seat (2016) form a telescopic structure.

4. The irrigation and waterlogging prevention and retention device for sloping farmland according to claim 1, characterized in that: The mounting shaft (2015) passes through the interior of the limiting seat (2018) and the fixed seat (2016), and the mounting shaft (2015) forms a movable rotatable connection with the limiting seat (2018) and the fixed seat (2016).

5. A slope farmland irrigation waterlogging prevention and retention device according to claim 1, characterized in that: The mounting shaft (2015) has limit holes at both the top and bottom ends, and one end of the limit rod (2023) is inserted into the limit hole.

6. A slope farmland irrigation and water loss prevention and retention device according to claim 1, characterized in that: The limiting seat (2018) moves inside the moving groove (2017), and the limiting seat (2018) and the moving groove (2017) form a limiting guide connection.

7. A slope farmland irrigation and water loss prevention and retention device according to claim 1, characterized in that: The limiting rod (2023) is provided in two sets, and the two sets of limiting rods (2023) are symmetrically distributed at the upper and lower ends of the fixed base (2016).

8. A slope farmland irrigation and water loss prevention and retention device according to claim 1, characterized in that: An intercepting block (7) is installed at the middle position of the bottom of the storage tank (1). An overflow port (10) is installed on one side of the storage tank (1). A collection box (8) is installed at the bottom of the overflow port (10). A water inlet (9) is provided at the bottom of the collection box (8). A separation structure (6) is provided inside the storage tank (1).

9. A slope farmland irrigation waterlogging prevention and retention device according to claim 8, characterized in that: The separation structure (6) includes a separation tube (601), which is installed inside the storage tank (1). A fixing frame (604) is installed on the outer side of one end of the separation tube (601). A spiral blade shaft (603) is installed inside the separation tube (601). A connecting plate (605) is installed at one end of the spiral blade shaft (603). A fixing plate (606) is installed at the top of the connecting plate (605). The fixing plate (606) is installed on the outer side of one end of the fan blade (2011). A separation net (602) is installed on the outer side of one end of the interceptor plate (201).

10. A slope farmland irrigation waterlogging prevention and retention device according to claim 9, characterized in that: The outer side of the spiral blade shaft (603) is provided with several blades, which are arranged at equal intervals on the outer side of the spiral blade shaft (603).

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