Water pumping device of irrigation and water conservancy irrigation pump station

Abstract

The invention discloses a water pumping device of a farmland water conservancy irrigation pump station, and relates to the technical field of farmland water conservancy irrigation. The water pumping device comprises a placement plate, and clamping plates driven by a clamping driving mechanism to move are symmetrically arranged on the left side and the right side of the top end of the placement plate; the two sets of clamping plates oppositely distributed front and back are driven by the clamping driving mechanism to displace, so that clamping and fixing of supporting plates at the bottom ends of a water pumping pump and a water drainage pump are relieved or achieved, and therefore the water pumping pump and the water drainage pump can be conveniently disassembled and assembled on the placement plate; when it is monitored that the water flow speed is lower than a preset value, a buzzer alarm at the top end of the filtering water tank is started to give an alarm to prompt workers to correspondingly clean the water pumping cover in time, and therefore the water pumping device of the irrigation and water conservancy irrigation pump station can find and handle the blocking problem of the water pumping cover in time; meanwhile, the water quality monitoring mechanism on the detection water tank can also detect the pH value and turbidity of water.

Description

Technical Field

[0001] The invention relates to the technical field of farmland water conservancy irrigation, and in particular to a water pumping device for a farmland water conservancy irrigation pump station. Background Art

[0002] Farmland water conservancy irrigation is a key technology in agricultural production. It involves directing water to farmland through artificial channels to meet the water needs of crop growth. This process not only helps to increase crop yields, but also improves soil structure and enhances land production capacity. With the advancement of science and technology and the needs of agricultural modernization, farmland water conservancy irrigation will continue to develop in the direction of intelligence, water conservation and sustainability.

[0003] Farmland water conservancy irrigation pump station is an important part of farmland water conservancy projects. It lifts water from water sources (such as rivers, lakes, reservoirs, etc.) to farmland through pump stations to meet the moisture required for crop growth. The design and operation of irrigation pump stations are of great significance to improving agricultural productivity and ensuring food security. The pumping device of farmland water conservancy irrigation pump station is a kind of equipment used for farmland irrigation. It can lift water from water sources to farmland to meet the moisture required for crop growth.

[0004] Most of the existing water pumping devices of farmland water conservancy irrigation pump stations have a simple structure. The water pump body used for pumping water is generally installed on the device by bolts, which makes it inconvenient to disassemble and assemble the water pump body when the water pump body needs to be maintained, repaired or replaced. It is inconvenient to use and has a low degree of intelligence. When blockage occurs at the pumping end, it cannot be discovered and handled in time, and it is also inconvenient to monitor the water quality parameters of the irrigation water in real time, thereby affecting the normal farmland water conservancy irrigation work. Therefore, the present invention proposes a water pumping device of a farmland water conservancy irrigation pump station to solve the problems existing in the prior art. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to propose a pumping device for a farmland water conservancy irrigation pump station, which solves the problems that the existing farmland water conservancy irrigation pump station pumping device is not convenient for convenient disassembly and assembly of the water pump body, and cannot promptly discover and deal with blockage at the pumping end, and is not convenient for real-time monitoring of the water quality parameters of the irrigation water.

[0006] In order to achieve the purpose of the present invention, the present invention is implemented through the following technical solutions: a water pumping device for a farmland water conservancy irrigation pump station, comprising a placement plate, the top left and right sides of the placement plate are symmetrically provided with clamping plates driven to move by a clamping drive mechanism, a support plate is clamped between the front and rear groups of the clamping plates, a water pump and a drainage water pump are fixed to the tops of the two groups of support plates respectively, a detection water tank and a filtering water tank that are interconnected are provided between the water pump and the drainage water pump, the input end of the water pump is connected to a water pumping hood through a first hose, an impurity filtering mechanism is installed on the water pumping hood, and the output end of the water pump is connected to the water pumping hood through a first hose. A water pumping hard pipe is fixed to the outlet end, and the water pumping hard pipe is connected to the filter water tank through a second hose, a flow sensor is installed on the water pumping hard pipe, and a buzzer alarm electrically connected to the flow sensor is fixed to the top of the filter water tank, a water quality monitoring mechanism is provided on the detection water tank, a drainage hard pipe is connected between the detection water tank and the drainage water pump, a lifting plate is connected to the side of the top of the placement plate away from the water pump through a lifting and adjusting mechanism, a diversion box is fixed to the top of the lifting plate, and the diversion box is connected to the output end of the drainage water pump through a third hose, and flange connecting pipes are fixed to the four side walls of the diversion box.

[0007] Further improvements are: universal wheels are fixed at the four corners of the bottom end of the placement plate, fixing plates are fixed to the outer walls of the four sides of the placement plate, a first threaded rod is threaded through the fixing plate, a handle is fixed to the top of the first threaded rod, and the bottom end of the first threaded rod is designed as a pointed cone.

[0008] A further improvement is that the clamping drive mechanism includes a cavity opened on both sides of the placement plate and a bidirectional screw rod rotatably connected to the cavity and driven to rotate by a turntable, and threaded plates are threadedly sleeved on both sides of the bidirectional screw rod, and a support block that slides through the top of the placement plate is symmetrically fixed between the threaded plate and the clamping plate.

[0009] A further improvement is that: the side walls of the front and rear two groups of clamping plates on the opposite side are symmetrically fixed with plug posts, and the support plate is symmetrically provided with plug holes adapted to the plug posts.

[0010] Further improvement lies in that: the impurity filtering mechanism includes an annular tube docked and installed at the bottom end of the water extraction hood and a rotating motor fixed on the inner side of the annular tube, rotating blades are symmetrically fixed on the output end shaft of the rotating motor, an impurity filtering plate is interlocked and inserted between the water extraction hood and the annular tube, and the opposite ends of the water extraction hood and the annular tube are provided with an interlocking groove adapted to the impurity filtering plate.

[0011] A further improvement is that first semicircular threaded columns are fixed to the outer walls on both sides of the water extraction hood, second semicircular threaded columns are fixed to the outer walls on both sides of the ring tube, and a threaded ring is threadedly sleeved on the first and second semicircular threaded columns.

[0012] A further improvement is that a box cover is fixed on the top of the filtered water tank, a sediment filter screen is fixed inside the filtered water tank by bolts, the filtered water tank is connected to the detection water tank through a water outlet pipe, and an electronic control valve is installed on the water outlet pipe.

[0013] A further improvement is that the water quality monitoring mechanism includes a pH meter and a turbidity meter fixed on both sides of the top of the detection water tank, the detection ends of the pH meter and the turbidity meter both penetrate into the detection water tank, and the front of the detection water tank is respectively fixed with a pH display and a turbidity display electrically connected to the pH meter and the turbidity meter.

[0014] A further improvement is that the lifting and adjusting mechanism includes a support rod symmetrically fixed to the bottom end of the lifting plate and a threaded sleeve rotatably connected to the bottom end of the lifting plate, a second threaded rod is threadedly connected to the inner side of the threaded sleeve, and the second threaded rod and the support rod are both fixed to the top of the placement plate.

[0015] The beneficial effects of the present invention are as follows: the present invention drives the front and rear relative two sets of clamping plates to move in opposite directions or towards each other through the clamping drive mechanism, so as to release or realize the clamping fixation of the bottom support plates of the pumping water pump and the drainage water pump, so that the pumping water pump and the drainage water pump can be conveniently disassembled and assembled on the placement plate, thereby facilitating daily maintenance, inspection or replacement of the pumping water pump and the drainage water pump, and being easy to use;

[0016] The flow sensor is used to monitor the water flow rate in the pumping hard pipe in real time, and when the water flow rate is detected to be lower than the preset value, the buzzer alarm on the top of the filter water tank is activated to sound an alarm to prompt the staff to clean the pumping cover in time, so that the pumping device of the farmland water conservancy irrigation pump station has a high degree of intelligence and can promptly discover and deal with the blockage problem of the pumping cover. At the same time, the pH value and turbidity of the water are detected by the water quality monitoring mechanism on the water tank, so that some water quality parameters of the extracted irrigation water can be monitored in real time to ensure the normal progress of farmland water conservancy irrigation work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view of the present invention;

[0018] Figure 2 is a front cross-sectional view of the present invention;

[0019] Figure 3 is a side cross-sectional view of the placement plate of the present invention located at the cavity;

[0020] Figure 4 is a cross-sectional view of a water extraction hood of the present invention;

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the lifting plate and the bottom lifting adjustment mechanism of the present invention.

[0022] Among them: 1. Placement plate; 2. Clamp; 3. Support plate; 4. Suction pump; 5. Drainage pump; 6. Detection water tank; 7. Filter water tank; 8. First hose; 9. Suction cover; 10. Suction pipe; 11. Second hose; 12. Flow sensor; 13. Buzzer alarm; 14. Drainage pipe; 15. Lifting plate; 16. Diverter box; 17. Third hose; 18. Flange connection pipe; 19. Fixing plate; 20. First threaded rod; 21. Turning handle; 22. Cavity; 23. Turntable; 24. Two-way thread Rod; 25, threaded plate; 26, support block; 27, plug column; 28, socket; 29, ring tube; 30, rotating motor; 31, rotating blade; 32, impurity filter plate; 33, fitting groove; 34, first semicircular threaded column; 35, second semicircular threaded column; 36, threaded ring; 37, box cover; 38, sediment filter screen; 39, water outlet pipe; 40, pH meter; 41, turbidity meter; 42, pH display; 43, turbidity display; 44, support rod; 45, threaded sleeve; 46, second threaded rod. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The present embodiment provides a water pumping device for a farmland water conservancy irrigation pump station, comprising a horizontally arranged placement plate 1 and a clamping drive mechanism arranged on the left and right sides of the placement plate 1, the top left and right sides of the placement plate 1 are provided with clamping plates 2 which are symmetrically distributed front and back, and the two groups of clamping plates 2 which are relatively distributed front and back are driven by the clamping drive mechanism and move in opposite directions, a group of support plates 3 are placed on the left and right sides of the top of the placement plate 1, and the support plate 3 is located between the front and rear groups of clamping plates 2 and is clamped and fixed, wherein a water pump 4 is fixed on the top of the right support plate 3, the right support plate 3 and the water pump 4 are as a whole and are synchronously disassembled and assembled on the placement plate 1, and the left support plate 3 is arranged on the top of the right support plate 3. A drainage water pump 5 is fixed on the top of the support plate 3. The left support plate 3 and the drainage water pump 5 are integrated as a whole and are synchronously disassembled and assembled on the placement plate 1. The side wall of the clamping plate 2 close to the support plate 3 is welded and fixed with plug posts 27 which are symmetrically distributed on the left and right. The support plate 3 is provided with plug holes 28 which are symmetrically distributed on the left and right, and the plug holes 28 are adapted to the plug posts 27. The clamping drive mechanism drives the two groups of clamping plates 2 to move in opposite directions or towards each other, so that the plug posts 27 are disengaged from the plug holes 28 and inserted into the plug holes 28, so as to release or realize the clamping fixation of the support plate 3 at the bottom end of the water pump 4 and the drainage water pump 5, so that the water pump 4 and the drainage water pump 5 can be conveniently disassembled and assembled on the placement plate 1;

[0025] A detection water tank 6 located between the water pump 4 and the drainage water pump 5 is fixed by bolts at the middle position of the top of the placement plate 1, a filter water tank 7 is fixed at the top of the detection water tank 6, and the detection water tank 6 and the filter water tank 7 are connected to each other, a first hose 8 is fixed at the input end of the water pump 4, and a pumping cover 9 as a water inlet end of the first hose 8 away from the water pump 4 is fixed, and an impurity filtering mechanism for filtering and intercepting impurities in the water is installed on the pumping cover 9, and a pumping hard pipe 10 is fixed at the output end of the water pump 4, and a pumping hard pipe 10 is installed on the pumping hard pipe 10 for monitoring the pumping A flow sensor 12 for the flow velocity of water in the water pipe 10, a buzzer alarm 13 is fixed to the top of the filter water tank 7 by bolts, and the flow sensor 12 is connected to the PLC control system of the device, and is used to start the buzzer alarm 13 at the top of the filter water tank 7 to send out an alarm to notify the staff when the water flow velocity is lower than a preset value, so as to timely find and deal with the blockage problem of the water pumping cover 9, and a second hose 11 is fixed to the water outlet of the water pumping pipe 10, and the other end of the second hose 11 is connected to the filter water tank 7, so that the water pump 4 can pump water into the filter water tank 7 for sediment filtering;

[0026] The detection water tank 6 is provided with a water quality monitoring mechanism for monitoring the pH value and turbidity of the pumped water body. A drainage hard pipe 14 is fixed to the input end of the drainage water pump 5, and the other end of the drainage hard pipe 14 is connected to the detection water tank 6 so that the drainage water pump 5 can pump out the water in the detection water tank 6. A lifting adjustment mechanism is fixed to the left side of the top of the placement plate 1, and a lifting plate 15 is connected to the top of the lifting adjustment mechanism. The lifting plate 15 can be lifted and adjusted under the action of the lifting adjustment mechanism. A diverter box 16 is fixed to the top of the lifting plate 15 by bolts, and a third hose is fixed to the bottom of the diverter box 16 17, one end of the third hose 17 away from the diverter box 16 passes through the lifting plate 15 and is connected to the output end of the drainage pump 5. The diverter box 16 is square in design and flange connecting pipes 18 are fixed to its four side walls, and the flange connecting pipe 18 has a control valve. The water conservancy and irrigation equipment in the farmland is fixedly connected to the diverter box 16 through the flange connecting pipe 18, so that the water pumped out by the pumping device of the farmland water conservancy and irrigation pump station can be used for farmland water conservancy and irrigation. Since the diverter box 16 can be raised and lowered synchronously with the lifting plate 15, it can adapt to different usage heights within a certain range.

[0027] Universal wheels are fixed to the four corners of the bottom end of the placement plate 1 by bolts to make the device easy to move. Fixed plates 19 are welded and fixed to the outer walls of the four sides of the placement plate 1. A first threaded rod 20 is threaded through the fixed plate 19. A turning handle 21 is fixed to the top of the first threaded rod 20. The bottom end of the first threaded rod 20 is designed as a pointed cone. The turning handle 21 is turned to drive the first threaded rod 20 to rotate downward until the lower parts of the first threaded rods 20 on the four sides of the placement plate 1 are respectively drilled into the soil, thereby achieving fixed positioning of the placement plate 1 and ensuring the stability of the pumping device of the farmland water conservancy irrigation pump station.

[0028] The clamping drive mechanism includes a cavity 22 and a bidirectional screw rod 24, wherein the cavity 22 is provided with two groups and respectively opened on the left and right sides of the placement plate 1, the bidirectional screw rod 24 is rotatably connected to the cavity 22 through a bearing, the front end of the bidirectional screw rod 24 passes through the bearing to the outside of the placement plate 1 and is fixed with a turntable 23, both sides of the bidirectional screw rod 24 are threadedly sleeved with threaded plates 25 and the threaded connection directions are opposite, the top of the threaded plate 25 is symmetrically fixed with a support block 26, the top of the support block 26 slides through the top of the placement plate 1 and is fixed to the bottom of the splint 2, and the top of the placement plate 1 is provided with a through groove adapted to the support block 26, and the bidirectional screw rod 24 is driven to rotate by rotating the turntable 23, so that the threaded plates 25 on both sides of the bidirectional screw rod 24 drive the support block 26 to move together with the splint 2.

[0029] The impurity filtering mechanism includes an annular tube 29 and a rotating motor 30, wherein the annular tube 29 is docked and installed at the bottom end of the water extraction hood 9, the rotating motor 30 is fixed on the inner side of the annular tube 29, and a rotating blade 31 is symmetrically fixed on the output end shaft of the rotating motor 30. The rotating blade 31 is driven to rotate by the rotating motor 30, so that large-volume impurities are crushed before entering the water extraction hood 9, thereby avoiding rapid clogging of the water extraction hood 9 due to excessive impurity volume. An impurity filter plate 32 is interlocked and inserted between the water extraction hood 9 and the annular tube 29, and filter holes are evenly opened on the impurity filter plate 32 to allow water to pass through and block impurities. The water extraction hood 9 and the annular tube 29 are both provided with an interlocking groove 33 at the opposite end, and the interlocking groove 33 is adapted to the impurity filter plate 32. After the annular tube 29 is docked with the water extraction hood 9, the impurity filter plate 32 is interlocked and installed in the interlocking groove 33.

[0030] A first semicircular threaded column 34 is welded and fixed to the lower part of the outer walls on the left and right sides of the water extraction hood 9, and a second semicircular threaded column 35 is welded and fixed to the upper part of the outer walls on the left and right sides of the annular tube 29. The first semicircular threaded column 34 and the second semicircular threaded column 35 are adapted to each other and together constitute a complete threaded column. When the annular tube 29 is docked with the water extraction hood 9, a threaded ring 36 is commonly threadedly sleeved on the first semicircular threaded column 34 and the second semicircular threaded column 35, and the first semicircular threaded column 34 and the second semicircular threaded column 35 are locked by the threaded ring 36, thereby realizing the docking and fixation of the annular tube 29 at the bottom end of the water extraction hood 9, and at the same time making it easy to disassemble and assemble the annular tube 29 at the bottom end of the water extraction hood 9, thereby bringing convenience to the cleaning work of the impurity filter plate 32, and facilitating the cleaning work after the impurity filter plate 32 is seriously blocked.

[0031] A box cover 37 is fixed to the top of the filtered water tank 7 by bolts, and the box cover 37 serves as a cap for the bottom of the filtered water tank 7. A sediment filter plate 38 for filtering and intercepting sediment in the water is fixed to the inside of the filtered water tank 7 by bolts (the volume of sediment in the water is too small to be fully filtered out by the impurity filtering mechanism). An outlet pipe 39 is fixed to the bottom of the filtered water tank 7, and the bottom end of the outlet pipe 39 is connected to the top of the detection water tank 6. An electronic control valve is installed on the outlet pipe 39 to control drainage.

[0032] The water quality monitoring mechanism includes a pH meter 40 and a turbidity meter 41, wherein the pH meter 40 is fixed to the left side of the top of the detection water tank 6 by bolts, and its detection end penetrates into the detection water tank 6, the pH turbidity meter 41 is fixed to the right side of the top of the detection water tank 6 by bolts, and its detection end penetrates into the detection water tank 6, a pH display 42 is fixed to the left side of the front of the detection water tank 6 by bolts, the pH meter 40 is connected to the PLC control system of the device, and is used to display the detected pH data on the pH display 42, a turbidity display 43 is fixed to the right side of the front of the detection water tank 6 by bolts, and the turbidity meter 41 is connected to the PLC control system of the device, and is used to display the detected turbidity data on the turbidity display 43.

[0033] The lifting and adjusting mechanism includes a support rod 44 and a threaded sleeve 45, wherein the support rod 44 is provided with two groups and is symmetrically fixed to the right side of the bottom end of the lifting plate 15, the bottom end of the support rod 44 is welded and fixed to the bottom end of the placement plate 1, the threaded sleeve 45 is rotatably connected to the bottom end of the lifting plate 15 through the top end through a bearing, the inner side of the threaded sleeve 45 is threadedly connected to a second threaded rod 46, the bottom end of the second threaded rod 46 is welded and fixed to the top end of the placement plate 1, the threaded sleeve 45 is rotated to make it move up and down along the second threaded rod 46, and the lifting plate 15 is driven to move up and down synchronously during the lifting and moving process.

[0034] When it is necessary to pump water during the process of farmland irrigation, first move the pumping device of the farmland irrigation pump station to the vicinity of the water source beside the farmland, then turn the handle 21 to drive the first threaded rod 20 to rotate downward until the lower parts of the first threaded rods 20 on the four sides of the placement plate 1 are drilled into the soil respectively, so as to achieve the fixed positioning of the placement plate 1, then put the pumping cover 9 at the end of the first hose 8 into the water, and then connect the irrigation equipment in the farmland to the flange connection pipe 18 on the side wall of the diversion box 16 through the pipeline, and then start the pumping water. The pump 4 draws water into the water pumping hard pipe 10 through the water pumping cover 9 and the first hose 8, and then injects it into the filter water tank 7 through the second hose 11. After the silt is filtered out by the filter water tank 7, the water is injected into the detection water tank 6. At this time, the pH value and turbidity of the water are detected by the water quality monitoring mechanism on the detection water tank 6. After that, the drainage water pump 5 is started to draw water into the third hose 17 through the drainage hard pipe 14, and finally inject it into the diversion box 16, and then inject it into the corresponding water conservancy irrigation equipment through the flange connection pipe 18, so as to realize the pumping operation of the entire farmland water conservancy irrigation pump station;

[0035] During the pumping operation, the flow sensor 12 is used to monitor the water flow rate in the pumping hard pipe 10 in real time (representing the water outlet speed of the output end of the pumping water pump 4). When the water flow rate is monitored to be lower than the preset value, it indicates that the pumping cover 9 at one end of the first hose 8 in the water is blocked (due to the blockage affecting the normal water inlet, the water outlet speed of the output end of the pumping water pump 4 is reduced). At this time, the buzzer alarm 13 at the top of the filter water tank 7 is started to sound an alarm to prompt the staff to clean the pumping cover 9 in time;

[0036] When the water pumping device of the farmland water conservancy irrigation pump station needs to be disassembled for maintenance, overhaul or replacement after a long time, the clamping drive mechanism is first used to drive the front and rear relative groups of clamping plates 2 to move in opposite directions to release the clamping fixation of the support plate 3 between the front and rear groups of clamping plates 2. At this time, the two groups of support plates 3 together with the water pumping pump 4 and the drainage water pump 5 on the top are directly removed from the mounting plate 1 to complete the disassembly work for maintenance, overhaul or replacement. During installation, the water pump 4 and the drainage water pump 5 are first placed on both sides of the top of the mounting plate 1, and the support plate 3 at the bottom is located between the front and rear groups of clamping plates 2. Then, the clamping drive mechanism is used to drive the front and rear relative groups of clamping plates 2 to move toward each other to achieve clamping fixation of the support plate 3, thereby completing the convenient installation of the water pump 4 and the drainage water pump 5.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A water pumping device for a farmland irrigation pump station, comprising a placement plate (1), characterized in that: Clamps (2) driven to move by a clamping drive mechanism are symmetrically arranged on both the left and right sides of the top of the placement plate (1), and a support plate (3) is clamped between the front and rear groups of the clamps (2). A water pump (4) and a water drainage pump (5) are fixed to the tops of the two groups of support plates (3), respectively. A detection water tank (6) and a filter water tank (7) that are interconnected are arranged between the water pump (4) and the water drainage pump (5). The input end of the water pump (4) is connected to a water pump cover (9) through a first hose (8), and an impurity filtering mechanism is installed on the water pump cover (9). A water pump hard pipe (10) is fixed to the output end of the water pump (4), and the water pump hard pipe (10) is connected to the filter water tank (7) through a second hose (11). ), a flow sensor (12) is installed on the water pumping hard pipe (10), a buzzer alarm (13) electrically connected to the flow sensor (12) is fixed on the top of the filtering water tank (7), a water quality monitoring mechanism is provided on the detection water tank (6), a drainage hard pipe (14) is connected between the detection water tank (6) and the drainage water pump (5), a lifting plate (15) is connected to the top of the placement plate (1) away from the water pump (4) through a lifting and adjusting mechanism, a diversion box (16) is fixed on the top of the lifting plate (15), the diversion box (16) is connected to the output end of the drainage water pump (5) through a third hose (17), and flange connection pipes (18) are fixed to the four side walls of the diversion box (16).

2. A water pumping device for a farmland irrigation pump station according to claim 1, characterized in that: Universal wheels are fixed at the four corners of the bottom end of the placement plate (1), and fixed plates (19) are fixed to the four outer walls of the placement plate (1). A first threaded rod (20) is threadedly passed through the fixing plate (19), a handle (21) is fixed to the top end of the first threaded rod (20), and the bottom end of the first threaded rod (20) is designed to be a pointed cone.

3. The water pumping device for a farmland irrigation pump station according to claim 1, characterized in that: The clamping drive mechanism comprises cavities (22) opened on both sides of the placement plate (1) and a bidirectional screw rod (24) rotatably connected to the cavity (22) and driven to rotate by a turntable (23), threaded plates (25) being threadedly sleeved on both sides of the bidirectional screw rod (24), and a support block (26) slidingly penetrating the top end of the placement plate (1) being symmetrically fixed between the threaded plate (25) and the clamping plate (2).

4. The water pumping device for a farmland irrigation pump station according to claim 1, characterized in that: Insertion posts (27) are symmetrically fixed to the side walls of the two groups of front and rear clamping plates (2) on opposite sides, and insertion holes (28) adapted to the insertion posts (27) are symmetrically provided on the support plate (3).

5. The water pumping device for a farmland irrigation pump station according to claim 1, characterized in that: The impurity filtering mechanism comprises an annular tube (29) butt-jointedly mounted at the bottom end of a water pumping hood (9) and a rotary motor (30) fixed to the inner side of the annular tube (29); a rotary blade (31) is symmetrically fixed on a rotating shaft at the output end of the rotary motor (30); an impurity filtering plate (32) is inserted and engaged between the water pumping hood (9) and the annular tube (29); and an engaging groove (33) adapted to the impurity filtering plate (32) is provided at opposite ends of the water pumping hood (9) and the annular tube (29).

6. The water pumping device for a farmland irrigation pump station according to claim 5, characterized in that: First semicircular threaded columns (34) are fixed to the outer walls on both sides of the water extraction cover (9), second semicircular threaded columns (35) are fixed to the outer walls on both sides of the annular tube (29), and a threaded ring (36) is threadedly sleeved on the first semicircular threaded column (34) and the second semicircular threaded column (35).

7. The water pumping device for a farmland irrigation pump station according to claim 1, characterized in that: A box cover (37) is fixed on the top of the filtered water box (7), a sediment filter screen (38) is fixed inside the filtered water box (7) by bolts, the filtered water box (7) is connected to the detection water box (6) through a water outlet pipe (39), and an electronic control valve is installed on the water outlet pipe (39).

8. The water pumping device for a farmland irrigation pump station according to claim 1, characterized in that: The water quality monitoring mechanism comprises a pH meter (40) and a turbidity meter (41) fixed on both sides of the top of a detection water tank (6); the detection ends of the pH meter (40) and the turbidity meter (41) are both extended into the interior of the detection water tank (6); and a pH display (42) and a turbidity display (43) electrically connected to the pH meter (40) and the turbidity meter (41) are respectively fixed on the front of the detection water tank (6).

9. The water pumping device for a farmland irrigation pump station according to claim 1, characterized in that: The lifting and adjusting mechanism comprises a support rod (44) symmetrically fixed to the bottom end of the lifting plate (15) and a threaded sleeve (45) rotatably connected to the bottom end of the lifting plate (15); a second threaded rod (46) is threadedly connected to the inner side of the threaded sleeve (45); the second threaded rod (46) and the support rod (44) are both fixed to the top end of the placement plate (1).

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