A graded pumping device for irrigation of water conservancy projects

Abstract

The present invention discloses a graded pumping device for irrigation of water conservancy projects, and relates to the field of irrigation technology. The graded pumping device comprises a pumping unit, and a plurality of the pumping units are provided. The plurality of the pumping units are connected in sequence through a hose, and the pumping unit comprises a pumping container, an isolation seat, a water pump, a diversion mechanism, a first water outlet pipe and a second water outlet pipe. Compared with the current pumping device, the present invention improves energy efficiency on the one hand, and reduces the load on a single pumping device on the other hand. The diversion mechanism can control the water output of the first water outlet pipe and the second water outlet pipe, so that the staff can perform differentiated irrigation according to the soil type, topography and water demand of the crop. The sealing plate can be used to discharge the accumulated water in the pumping unit to the outside after the irrigation of the present invention is finished, so as to avoid the accumulated water being stored in the pumping unit for a long time and prevent the service life of each component in the pumping unit from being affected.

Description

Technical Field

[0001] The invention relates to the technical field of irrigation, in particular to a graded water pumping device used for irrigation of water conservancy projects. Background Art

[0002] Staged pumping devices are used in irrigation projects to improve water resource utilization efficiency and meet the water needs of different crops. They usually consist of multiple pumping devices, each responsible for different water levels or water volume requirements.

[0003] The working principles of the current graded pumping devices are basically similar to those of the patents "Publication No. CN112983778A Graded Pumping Device for Pumping Test" and "CN109268065A A Graded Pumping Device for Coal Mining Tunnel", but during the irrigation process, the current graded pumping devices still have the following shortcomings: First, after the irrigation is completed, a large amount of accumulated water usually remains inside the graded pumping device, which often requires manual cleaning by the staff. If the accumulated water is not cleaned for a long time, rust is very likely to occur inside the graded pumping device; second, most of the current graded pumping devices cannot irrigate differently according to soil type, terrain and crop water demand, thereby affecting the irrigation effect; finally, when the graded pumping device is irrigating, the water pump will vibrate and overheat due to long-term work, but the existing graded pumping devices usually cannot promptly feedback the working status of the water pump to the staff, resulting in the staff being unable to promptly replace and repair the problematic water pump. Summary of the invention

[0004] The object of the present invention is to provide a staged water pumping device for irrigation of water conservancy projects to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a graded pumping device for irrigation of water conservancy projects, the graded pumping device comprising a pumping unit, a plurality of the pumping units are provided, and the plurality of the pumping units are connected in sequence through a hose, the pumping unit comprising a pumping container, an isolation seat, a water pump, a diversion mechanism, a first water outlet pipe and a second water outlet pipe, a first cavity and a second cavity are provided in the pumping container, the isolation seat is provided between the first cavity and the second cavity, a water inlet pipe is provided at the side end of the first cavity, the water pump and the diversion mechanism are both provided inside the second cavity, the first cavity and the second cavity are connected through the pumping pipe, the water inlet end of the water pump is connected to the pumping pipe, and the water outlet end of the water pump is connected to the first water outlet pipe and the second water outlet pipe through the diversion mechanism. When the present invention is in use, The first water outlet pipe is connected to the water inlet pipe on the next pumping unit through a hose, and then the second water outlet pipe is connected to the external spraying equipment. Finally, one of the pumping units is placed in the river channel. When the water pumps in several pumping units are turned on, the water flow in the river channel will flow in the first cavity inside the several pumping units. The above technical scheme can reasonably configure water pumps and other equipment. On the one hand, energy efficiency is improved, and water pressure is controlled and adjusted by pumping water step by step. On the other hand, the load on a single pumping equipment is reduced, thereby extending the service life of the equipment. Finally, the present invention is also provided with a diversion mechanism. The staff can control the water output of the first water outlet pipe and the second water outlet pipe through the diversion mechanism. When the water flows out of the second water outlet pipe, the land near the pumping unit can be irrigated to ensure that each area can get a suitable amount of water.

[0006] Furthermore, a drainage hole is provided in the first cavity, and the drainage hole passes through the water pumping container. A rotating shaft, a fixing frame and a sealing plate are also provided in the first cavity. When the present invention is working normally, the sealing plate is in contact with the drainage hole and the drainage hole is blocked by the sealing plate. A reversing component is provided in the isolation seat, and the reversing component is connected to the rotating shaft. The sealing plate and the rotating shaft are connected by a fixing frame. The drainage hole and the water pump are located on the same side of the center line of the water pumping container. When the staff places the pumping unit on the ground, due to the weight of the water pump itself, the pumping unit will automatically roll until the drainage hole and the water pump are close to the ground. When the present invention is finished working, there will be residual water in the first cavity. The staff can control the rotating shaft to rotate in the first cavity through the reversing component. When the sealing plate no longer blocks the drainage hole, the accumulated water in the first cavity will automatically flow to the outside, so as to avoid the accumulated water being stored in the first cavity for a long time and prevent the service life of various components in the pumping unit from being affected.

[0007] Furthermore, an air cavity, an electromagnet and a pressure plate are provided in the fixing frame, the electromagnet is fixedly installed inside the air cavity, the pressure plate is movably installed inside the air cavity through a spring rod, the end of the pressure plate close to the electromagnet is magnetic, the end of the sealing plate close to the inner wall of the water pumping container is provided with a groove, an annular air bag is provided in the groove, the air cavity is filled with compressed gas and is connected with the annular air bag, when the present invention is working normally, the electromagnet will generate a set of magnetic fields that repel the pressure plate, at this time the pressure plate will squeeze the compressed gas in the air cavity into the annular air bag, so that the annular air bag is in close contact with the inner wall of the water pumping container, preventing water from flowing out of the drainage hole during irrigation, when the present invention is finished working and the accumulated water in the first cavity needs to be discharged, the electromagnet will generate a set of magnetic fields that attract the pressure plate, so that the compressed gas in the annular air bag flows back into the air cavity, thereby reducing the friction between the annular air bag and the inner wall of the water pumping container, and facilitating the subsequent rotation of the sealing plate in the first cavity.

[0008] Furthermore, the diverter mechanism includes a diverter seat, a first through hole is provided at one end of the diverter seat close to the water pump, a second through hole and a third through hole are provided at one end of the diverter seat away from the water pump, a diverter rod is provided at the middle position inside the diverter seat, the first through hole is aligned with the water outlet end of the water pump, the second through hole is aligned with the first water outlet pipe, and the third through hole is aligned with the second water outlet pipe. Two sealing blocks are provided on the diverter rod, and the reversing component is connected to the diverter rod. The present invention controls the movement of the diverter rod in the diverter seat through the reversing component. When one of the sealing blocks blocks the third through hole (the second through hole is not blocked), the water pumped out by the water pump will flow along the first water outlet pipe to be transported to the next pumping unit. When one of the sealing blocks blocks the second through hole (the third through hole is not blocked), the water pumped out by the water pump will flow along the second water outlet pipe, thereby irrigating the land near the current pumping unit. Through the above technical scheme, the present invention can perform differentiated irrigation according to soil type, terrain and water demand of crops.

[0009] Further, the reversing assembly includes a transmission chamber, a gear, a cylinder, a first telescopic slot, a second telescopic slot, a rack and a third telescopic slot, one end of the diverter rod is arranged in the first telescopic slot, the diverter rod is connected to the first telescopic slot by an adjusting spring, the gear is fixedly mounted on the rotating shaft, one end of the rack is arranged in the second telescopic slot, the other end of the rack is arranged in the third telescopic slot, the rack is connected to the third telescopic slot by a reset spring, the rack is meshed with the gear, one end of the transmission chamber is connected to the first telescopic slot, the other end of the transmission chamber is connected to the second telescopic slot, a piston is arranged at the middle position of the transmission chamber, and the working end of the cylinder is connected to the piston. The present invention controls the piston to move in the transmission chamber by the cylinder, and transmission fluid is arranged at the upper and lower ends of the transmission chamber, the transmission fluid does not fill the transmission chamber, and the piston in the present invention is located in the transmission chamber. When in the middle position, the sealing plate blocks the drainage hole, and one of the sealing blocks blocks the third through hole. When the sealing plate needs to rotate after the work of the present invention is completed, it is only necessary to control the piston to move upward through the cylinder. At this time, the transmission fluid at the upper end of the transmission chamber will enter the second telescopic groove, and the rack drives the gear to rotate under the action of the hydraulic pressure, thereby controlling the rotation of the sealing plate. If the present invention needs to change the position of the two groups of sealing blocks during operation, the staff only needs to control the piston to move downward through the cylinder. At this time, the transmission fluid at the lower end of the transmission chamber will enter the first telescopic groove. Under the action of the hydraulic pressure, the diverter rod will move with the two groups of sealing blocks, thereby adjusting the water output of the first water outlet pipe and the second water outlet pipe. The present invention drives the diverter mechanism and the sealing plate at the same time through the cylinder. Compared with the current pumping device, the present invention can reduce the use of electrical equipment such as motors and electric valves, and reduce the impact of the environment on the present invention.

[0010] Furthermore, a positioning sleeve is also provided in the second cavity, the water pump is arranged in the positioning sleeve, the positioning sleeve and the water pump are connected via a plurality of positioning brackets, a plurality of cooling fins are provided on the positioning sleeve, the cold end of the cooling fin is located inside the positioning sleeve, and the hot end of the cooling fin is located outside the positioning sleeve.

[0011] Furthermore, a sensing component is provided at one end of the positioning bracket close to the water pump.

[0012] Furthermore, the sensing component includes a movable groove, a positioning block and a thermometer, one end of the positioning block is arranged in the movable groove, the other end of the positioning block is in contact with the outer shell of the water pump, a piezoelectric sheet is arranged in the movable groove, the piezoelectric sheet and the positioning block are connected by an induction spring, and the thermometer is arranged at one end of the positioning block close to the water pump. If the water pump in the present invention jumps during operation, the positioning block will intermittently squeeze the induction spring in the movable groove, and the piezoelectric sheet will generate a group of electrical signals at this time. The staff can timely know the working status of the water pump in the corresponding pumping unit through the change amplitude and frequency of the group of electrical signals to avoid damage to the various components in the corresponding pumping unit. Finally, the present invention detects whether the working temperature of the water pump is normal through a thermometer. When the working temperature of the water pump is too high, the environment inside the positioning sleeve is cooled by a refrigeration sheet to ensure the normal operation of the water pump.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: compared with the current pumping device, the present invention is provided with a plurality of pumping units, so that the water pump and other equipment can be reasonably configured, on the one hand, the energy efficiency is improved, and the water pressure is controlled and adjusted by pumping water step by step, and on the other hand, the load on a single pumping device is reduced, thereby extending the service life of the equipment. In addition, the present invention is also provided with a diversion mechanism and a sealing plate, and the water output of the first water outlet pipe and the second water outlet pipe can be controlled by the diversion mechanism, so that the staff can irrigate differently according to the soil type, topography and water demand of the crop, and the drainage hole can be blocked by the sealing plate during irrigation in the present invention. After the irrigation of the invention is over, the accumulated water in the pumping unit is discharged to the outside, so as to avoid the accumulated water being stored in the pumping unit for a long time and prevent the service life of various components in the pumping unit from being affected. The present invention drives the diversion mechanism and the sealing plate to work at the same time through the reversing component. Compared with the current pumping device, the present invention can reduce the use of electrical equipment such as motors and electric valves, and reduce the impact of the environment on the present invention. Finally, the present invention also provides a sensing component, through which the working condition of the water pump can be monitored in real time to prevent the vibration amplitude of the water pump from being too large or the temperature from being too high, affecting subsequent irrigation, and facilitating the staff to repair and replace the water pump in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the internal structure of the pumping unit of the present invention;

[0016] Figure 3 It is a schematic diagram of the internal structure of the fixing frame of the present invention;

[0017] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of the middle AA section;

[0018] Figure 5 It is a schematic diagram of the sealing plate structure of the present invention;

[0019] Figure 6 It is a schematic diagram of the internal structure of the isolation seat of the present invention;

[0020] Figure 7 For the present invention Figure 6 Schematic diagram of the structure of the middle BB part;

[0021] Figure 8 It is a schematic diagram of the connection between the positioning sleeve and the water pump of the present invention;

[0022] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure of part C in the middle.

[0023] In the figure: 1. pumping unit; 11. pumping container; 111. water inlet pipe; 12. rotating shaft; 121. fixing frame; 1211. electromagnet; 1212. pressing plate; 13. sealing plate; 131. annular airbag; 14. isolation seat; 141. pumping pipe; 142. transmission chamber; 143. gear; 144. piston; 145. cylinder; 146. first telescopic slot; 147. second telescopic slot; 148. rack; 149. third telescopic slot; 15. water pump; 16. positioning sleeve; 161. positioning bracket; 1611. movable slot; 1612. positioning block; 1613. thermometer; 17. first water outlet pipe; 18. second water outlet pipe; 19. diverter seat; 191. diverter rod; 2. hose. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example: Figure 1-Figure 3As shown, the present invention provides a technical solution, a graded pumping device for irrigation of water conservancy projects, the graded pumping device includes a pumping unit 1, a plurality of pumping units 1 are provided, and the plurality of pumping units 1 are connected in sequence through a hose 2, the pumping unit 1 includes a pumping container 11, an isolation seat 14, a water pump 15, a diversion mechanism, a first water outlet pipe 17 and a second water outlet pipe 18, a first cavity and a second cavity are provided in the pumping container 11, the isolation seat 14 is provided between the first cavity and the second cavity, a water inlet pipe 111 is provided at the side end of the first cavity, the water pump 15 and the diversion mechanism are both provided inside the second cavity, the first cavity and the second cavity are connected through a pumping pipe 141, the water inlet end of the water pump 15 is connected to the pumping pipe 141, and the water outlet end of the water pump 15 is connected to the first water outlet pipe 17 and the second water outlet pipe 18 through the diversion mechanism, when the present invention is in use, the hose 2 is used to connect the first cavity and the second cavity. The first water outlet pipe 17 is connected to the water inlet pipe 111 on the next pumping unit 1, and then the second water outlet pipe 18 is connected to the external spraying equipment. Finally, one of the pumping units 1 is placed in the river channel. When the water pumps 15 in several pumping units 1 are turned on, the water flow in the river channel will flow in the first cavity inside the several pumping units 1. The water pumps 15 and other equipment can be reasonably configured through the above technical scheme. On the one hand, energy efficiency is improved, and the water pressure is controlled and adjusted by pumping water step by step. On the other hand, the load on a single pumping equipment is reduced, thereby extending the service life of the equipment. Finally, the present invention is also provided with a diversion mechanism. The staff can control the water output of the first water outlet pipe 17 and the second water outlet pipe 18 through the diversion mechanism. When the water flows out of the second water outlet pipe 18, the land near the pumping unit 1 can be irrigated to ensure that each area can get a suitable amount of water.

[0026] like Figure 2-Figure 4 As shown, a drainage hole is provided in the first cavity, and the drainage hole penetrates the water pumping container 11. A rotating shaft 12, a fixing frame 121 and a sealing plate 13 are also provided in the first cavity. When the present invention is in normal operation, the sealing plate 13 contacts the drainage hole and blocks the drainage hole through the sealing plate 13. A reversing component is provided in the isolation seat 14, and the reversing component is connected to the rotating shaft 12. The sealing plate 13 is connected to the rotating shaft 12 through the fixing frame 121. The drainage hole and the water pump 15 are located on the same side of the center line of the water pumping container 11. When the staff is When the pumping unit 1 is placed on the ground, due to the weight of the water pump 15, the pumping unit 1 will automatically roll until the drainage hole and the water pump 15 are close to the ground. When the present invention is finished working, there will be residual water in the first cavity. The staff can control the rotation of the rotating shaft 12 in the first cavity through the reversing component. When the sealing plate 13 no longer blocks the drainage hole, the accumulated water in the first cavity will automatically flow to the outside, so as to avoid the accumulated water being stored in the first cavity for a long time and prevent the service life of various components in the pumping unit 1 from being affected.

[0027] like Figure 3-Figure 5 As shown, the fixed frame 121 is provided with an air cavity, an electromagnet 1211 and a pressure plate 1212, the electromagnet 1211 is fixedly installed inside the air cavity, the pressure plate 1212 is movably installed inside the air cavity through a spring rod, the end of the pressure plate 1212 close to the electromagnet 1211 is magnetic, the end of the sealing plate 13 close to the inner wall of the water pumping container 11 is provided with a groove, the groove is provided with an annular air bag 131, the air cavity is filled with compressed gas and is connected to the annular air bag 131, when the present invention is working normally, the electromagnet 1211 will generate a set of magnetic fields that repel the pressure plate 1212 At this time, the pressure plate 1212 will squeeze the compressed gas in the air cavity into the annular airbag 131, so that the annular airbag 131 is in close contact with the inner wall of the water pumping container 11, preventing water from flowing out of the drainage hole during irrigation. When the work of the present invention is completed and the accumulated water in the first cavity needs to be discharged, the electromagnet 1211 will generate a set of magnetic fields that attract the pressure plate 1212, so that the compressed gas in the annular airbag 131 flows back into the air cavity, thereby reducing the friction between the annular airbag 131 and the inner wall of the water pumping container 11, and facilitating the subsequent rotation of the sealing plate 13 in the first cavity.

[0028] like Figure 6 As shown, the diverter mechanism includes a diverter seat 19, a first through hole is provided at one end of the diverter seat 19 close to the water pump 15, a second through hole and a third through hole are provided at one end of the diverter seat 19 away from the water pump 15, a diverter rod 191 is provided at the middle position inside the diverter seat 19, the first through hole is aligned with the water outlet end of the water pump 15, the second through hole is aligned with the first water outlet pipe 17, the third through hole is aligned with the second water outlet pipe 18, two sealing blocks are provided on the diverter rod 191, and the reversing component is connected to the diverter rod 191. The present invention controls the diverter rod 191 through the reversing component. 91 moves in the diverter seat 19. When one of the sealing blocks blocks the third through hole (the second through hole is not blocked), the water pumped out by the water pump 15 will flow along the first water outlet pipe 17 to be delivered to the next pumping unit 1. When one of the sealing blocks blocks the second through hole (the third through hole is not blocked), the water pumped out by the water pump 15 will flow along the second water outlet pipe 18 to irrigate the land near the current pumping unit 1. Through the above technical solution, the present invention can perform differentiated irrigation according to soil type, terrain and water demand of crops.

[0029] like Figure 6 and Figure 7As shown, the reversing assembly includes a transmission chamber 142, a gear 143, a cylinder 145, a first telescopic slot 146, a second telescopic slot 147, a rack 148 and a third telescopic slot 149, one end of a diverter rod 191 is arranged in the first telescopic slot 146, and the diverter rod 191 is connected to the first telescopic slot 146 through an adjusting spring, the gear 143 is fixedly mounted on the rotating shaft 12, one end of the rack 148 is arranged in the second telescopic slot 147, and the other end of the rack 148 is arranged in the third telescopic slot 149, and the rack 148 is reset by a reset spring. The spring is connected to the third telescopic groove 149, the rack 148 is meshed with the gear 143, one end of the transmission chamber 142 is connected to the first telescopic groove 146, and the other end of the transmission chamber 142 is connected to the second telescopic groove 147. A piston 144 is arranged at the middle position of the transmission chamber 142, and the working end of the cylinder 145 is connected to the piston 144. The present invention controls the piston 144 to move in the transmission chamber 142 through the cylinder 145. Transmission fluid is arranged at both the upper and lower ends of the transmission chamber 142, and the transmission fluid does not fill the transmission chamber 142 (such as Figure 6 As shown in FIG. 1 ), when the piston 144 of the present invention is located at the middle position of the transmission chamber 142, the sealing plate 13 blocks the drain hole (as shown in FIG. Figure 4 As shown), one of the sealing blocks blocks the third through hole (as shown Figure 6 As shown), when the work of the present invention is completed and the sealing plate 13 needs to be rotated, it is only necessary to control the piston 144 to move up through the cylinder 145. At this time, the transmission fluid at the upper end of the transmission chamber 142 will enter the second telescopic groove 147. Under the action of the hydraulic pressure, the rack 148 drives the gear 143 to rotate, thereby controlling the rotation of the sealing plate 13. If the position of the two groups of sealing blocks needs to be changed during the work of the present invention, the staff only needs to control the piston 144 to move down through the cylinder 145. At this time, the transmission fluid at the lower end of the transmission chamber 142 will enter the first telescopic groove 146. Under the action of the hydraulic pressure, the diverter rod 191 will move with the two groups of sealing blocks, thereby adjusting the water output of the first water outlet pipe 17 and the second water outlet pipe 18. The present invention drives the diverter mechanism and the sealing plate 13 to work at the same time through the cylinder 145. Compared with the current pumping device, the present invention can reduce the use of electrical equipment such as motors and electric valves, and reduce the impact of the environment on the present invention.

[0030] like Figure 7 and Figure 8 As shown, a positioning sleeve 16 is also provided in the second cavity, and the water pump 15 is provided in the positioning sleeve 16. The positioning sleeve 16 and the water pump 15 are connected via a plurality of positioning brackets 161. A plurality of cooling fins are provided on the positioning sleeve 16. The cold end of the cooling fin is located inside the positioning sleeve 16, and the hot end of the cooling fin is located outside the positioning sleeve 16.

[0031] like Figure 7 and Figure 8As shown, a sensing component is disposed at one end of the positioning bracket 161 close to the water pump 15 .

[0032] like Figure 7 and Figure 8 As shown, the sensing component includes a movable groove 1611, a positioning block 1612 and a thermometer 1613. One end of the positioning block 1612 is arranged in the movable groove 1611, and the other end of the positioning block 1612 is in contact with the outer shell of the water pump 15. A piezoelectric sheet is arranged in the movable groove 1611, and the piezoelectric sheet and the positioning block 1612 are connected by an induction spring. The thermometer 1613 is arranged at one end of the positioning block 1612 close to the water pump 15.

[0033] If the water pump 15 in the present invention jumps during operation, the positioning block 1612 will intermittently squeeze the induction spring in the movable groove 1611. At this time, the piezoelectric sheet will generate a group of electrical signals. The staff can timely know the working status of the water pump 15 in the corresponding pumping unit 1 through the change amplitude and frequency of the group of electrical signals to avoid damage to the various components in the corresponding pumping unit 1. Finally, the present invention detects whether the working temperature of the water pump 15 is normal through the thermometer 1613. When the working temperature of the water pump 15 is too high, the environment inside the positioning sleeve 16 is cooled by the refrigeration sheet to ensure the normal operation of the water pump 15.

[0034] Working principle of the present invention: When the present invention is used, the first water outlet pipe 17 is connected to the water inlet pipe 111 on the next pumping unit 1 through the hose 2, and then the second water outlet pipe 18 is connected to the external spraying equipment. Finally, one of the pumping units 1 is placed in the river channel, and the water pumps 15 in the plurality of pumping units 1 are turned on. At this time, the water flow in the river channel will flow in the first cavity inside the plurality of pumping units 1, so as to transport the water flow in the river channel to the corresponding position to be irrigated. When the present invention is working, the diverter rod 191 can be controlled to move in the diverter seat 19 through the reversing component. When one of the sealing blocks blocks the third through hole (the second through hole is not blocked), the diverter rod 191 can be controlled to move in the diverter seat 19. When the sealing plate 13 is blocked, the water pumped out by the water pump 15 will flow along the first water outlet pipe 17 to be delivered to the next pumping unit 1; when one of the sealing blocks blocks the second through hole (the third through hole is not blocked), the water pumped out by the water pump 15 will flow along the second water outlet pipe 18 to irrigate the land near the current pumping unit 1; when the present invention is finished working, the staff can control the rotation of the rotating shaft 12 in the first cavity through the reversing component; when the sealing plate 13 no longer blocks the drainage hole, the accumulated water in the first cavity will automatically flow to the outside, so as to avoid the accumulated water being stored in the first cavity for a long time and prevent the service life of various components in the pumping unit 1 from being affected.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. The embodiments should therefore be considered exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A graded pumping device for irrigation of water conservancy projects, characterized in that: The graded water pumping device comprises a water pumping unit (1), wherein a plurality of the water pumping units (1) are provided, and the plurality of the water pumping units (1) are connected in sequence via a hose (2); the water pumping unit (1) comprises a water pumping container (11), an isolation seat (14), a water pump (15), a diversion mechanism, a first water outlet pipe (17), and a second water outlet pipe (18); a first cavity and a second cavity are provided in the water pumping container (11); the isolation seat (14) is provided between the first cavity and the second cavity; a water inlet pipe (111) is provided at a side end of the first cavity; the water pump (15) and the diversion mechanism are both provided inside the second cavity; the first cavity and the second cavity are connected via a water pumping pipe (141); the water inlet end of the water pump (15) is connected to the water pumping pipe (141); and the water outlet end of the water pump (15) is connected to the first water outlet pipe (17) and the second water outlet pipe (18) via the diversion mechanism; A drainage hole is provided in the first cavity, the drainage hole passes through the water pumping container (11), the drainage hole and the water pump (15) are located on the same side of the center line of the water pumping container (11), a rotating shaft (12), a fixing frame (121) and a sealing plate (13) are also provided in the first cavity, a reversing assembly is provided in the isolation seat (14), the reversing assembly is connected to the rotating shaft (12), the sealing plate (13) is connected to the rotating shaft (12) via the fixing frame (121), and the rotating shaft (12) is controlled to rotate in the first cavity via the reversing assembly; The diverter mechanism comprises a diverter seat (19), a first through hole being arranged at one end of the diverter seat (19) close to the water pump (15), a second through hole and a third through hole being arranged at one end of the diverter seat (19) away from the water pump (15), a diverter rod (191) being arranged at a middle position inside the diverter seat (19), the first through hole being aligned with the water outlet end of the water pump (15), the second through hole being aligned with the first water outlet pipe (17), the third through hole being aligned with the second water outlet pipe (18), two sealing blocks being arranged on the diverter rod (191), the reversing assembly being connected to the diverter rod (191), and the diverter rod (191) being controlled to move in the diverter seat (19) by the reversing assembly; The reversing assembly comprises a transmission chamber (142), a gear (143), a cylinder (145), a first telescopic slot (146), a second telescopic slot (147), a rack (148) and a third telescopic slot (149); one end of the diverter rod (191) is arranged in the first telescopic slot (146); the diverter rod (191) is connected to the first telescopic slot (146) via an adjusting spring; the gear (143) is fixedly mounted on the rotating shaft (12); one end of the rack (148) is arranged in the second telescopic slot (147); the gear (143) is fixedly mounted on the rotating shaft (12); one end of the rack (148) is arranged in the second telescopic slot (147); The other end of the rack (148) is arranged in the third telescopic slot (149), the rack (148) is connected to the third telescopic slot (149) through a return spring, the rack (148) is meshed with the gear (143), one end of the transmission chamber (142) is connected to the first telescopic slot (146), the other end of the transmission chamber (142) is connected to the second telescopic slot (147), a piston (144) is arranged at the middle position of the transmission chamber (142), and the working end of the cylinder (145) is connected to the piston (144).

2. A step-by-step pumping device for irrigation of water conservancy projects according to claim 1, characterized in that: An air cavity, an electromagnet (1211) and a pressure plate (1212) are arranged in the fixing frame (121); the electromagnet (1211) is fixedly mounted inside the air cavity; the pressure plate (1212) is movably mounted inside the air cavity via a spring rod; a groove is arranged at one end of the sealing plate (13) close to the inner wall of the water pumping container (11); an annular air bag (131) is arranged in the groove; and the air cavity is in communication with the annular air bag (131).

3. A step-by-step pumping device for irrigation of water conservancy projects according to any one of claims 1-2, characterized in that: A positioning sleeve (16) is further provided in the second cavity, the water pump (15) is provided in the positioning sleeve (16), the positioning sleeve (16) and the water pump (15) are connected via a plurality of positioning brackets (161), a plurality of cooling fins are provided on the positioning sleeve (16), the cold end of the cooling fins is located inside the positioning sleeve (16), and the hot end of the cooling fins is located outside the positioning sleeve (16).

4. A step-by-step pumping device for irrigation of water conservancy projects according to claim 3, characterized in that: A sensing component is provided at one end of the positioning bracket (161) close to the water pump (15), and the working condition of the water pump (15) is detected by the sensing component.

5. A step-by-step pumping device for irrigation of water conservancy projects according to claim 4, characterized in that: The sensing component comprises a movable groove (1611), a positioning block (1612) and a temperature detector (1613); one end of the positioning block (1612) is arranged in the movable groove (1611); the other end of the positioning block (1612) is in contact with the outer shell of the water pump (15); a piezoelectric sheet is arranged in the movable groove (1611); the piezoelectric sheet and the positioning block (1612) are connected via an induction spring; and the temperature detector (1613) is arranged at one end of the positioning block (1612) close to the water pump (15).

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