An agricultural piston pump

Abstract

The application discloses an agricultural plunger pump and relates to the technical field of agricultural plunger pumps.The application realizes the self-cleaning of filter screen two through ball valve switching, is suitable for use in an agricultural environment, and is free of complex electrical control.The regular reverse flushing can prevent filter screen two from being blocked, improves long-term work efficiency, and the filter screen barrel is internally provided with multiple layers of filter screen plates arranged in a ladder type, with the mesh size gradually decreasing layer by layer.Large-particle impurities are blocked by the first layer of filter screen, and small-particle impurities are intercepted by subsequent filter screens, so that the load of single filter screen is prevented from being too large.After flushing is completed, the water flow pressure disappears, the compressed spring pushes the movable column to rebound, the baffle rapidly closes the inlet groove, a physical seal is formed, the filter screen barrel can be regularly disassembled and cleaned, the auxiliary barrel can also be disassembled and cleaned through threads, the overall service life is prolonged, clean filter screen two ensures smooth water inlet, can continuously output flow and pressure, and guarantees irrigation efficiency.

Description

Technical Field

[0001] This invention relates to the field of agricultural plunger pump technology, specifically to an agricultural plunger pump. Background Technology

[0002] A plunger pump is a positive displacement pump that uses the reciprocating motion of a plunger within a cylinder to pressurize and transport liquids. Its working principle involves changing the volume of the pump chamber through the periodic displacement of the plunger, thereby drawing in and discharging liquid. Agricultural plunger pumps are specifically designed for agricultural applications, featuring high pressure, high efficiency, and durability. They are suitable for irrigation, fertilization, spraying, and cleaning operations, and perform particularly well in situations requiring precise flow control or high-pressure delivery.

[0003] When existing agricultural plunger pumps are used for farmland irrigation, after prolonged operation, the irrigation water contains suspended solids such as silt, algae, weeds, and dead leaves. Over time, this accumulation leads to filter clogging. If the filter mesh is too low, it cannot effectively intercept fine particles, allowing impurities to enter the pump body. If the filter mesh is too high, although the filtration effect is better, it is more prone to clogging and requires frequent cleaning. During long-term continuous operation, the plunger pump runs under high-pressure irrigation for extended periods, continuously drawing in impurities at the inlet. The filter cannot automatically discharge sludge, leading to increased clogging. Once the filter is clogged, the inlet resistance increases, the pump flow rate decreases, the irrigation speed slows down, and the water requirements of crops are affected. After clogging, the pump needs to draw in water at higher power, causing motor overload, overheating, and shortening its lifespan. Traditional filters require manual disassembly and cleaning, which is time-consuming and labor-intensive, especially inconvenient in remote farmland. Summary of the Invention

[0004] To address the problem of filter clogging in existing agricultural plunger pumps during prolonged operation, this invention provides an agricultural plunger pump.

[0005] This invention is achieved through the following technical solution: an agricultural plunger pump, comprising an agricultural plunger pump, wherein the agricultural plunger pump is provided with a power end, the agricultural plunger pump is provided with a plurality of hydraulic ends, a pump head is installed on the outer surface of the output end of each of the plurality of hydraulic ends, a rubber plunger is installed on the outer surface of each of the plurality of pump heads, a plurality of pressure chambers are evenly distributed inside the agricultural plunger pump, a liquid distribution chamber is provided inside the agricultural plunger pump, a filter assembly is installed on one end surface of the liquid distribution chamber, and a cleaning assembly is evenly distributed on the bottom surface of each of the plurality of pressure chambers;

[0006] The filtration assembly includes a main inlet pipe and a regulating pipe. The main inlet pipe is installed on one end surface of the dispensing chamber. A regulating pipe is installed on one end surface of the main inlet pipe. A collecting pipe is installed on the bottom surface of the regulating pipe. An interface pipe is installed on the outer surface of the regulating pipe. A secondary inlet pipe is installed on the outer surface of the collecting pipe and the outer surface of the main inlet pipe. Ball valves are installed inside the secondary inlet pipe, the main inlet pipe, and the interface pipe. A second filter screen is installed on one end surface of the main inlet pipe. A filter screen cylinder is movably connected to the inside of the collecting pipe via threads.

[0007] Furthermore, a secondary cylinder is movably mounted on one end surface of the filter cylinder, a connecting post is mounted on one end surface of the secondary cylinder, and filter plates are evenly distributed on the outer surface of the connecting post.

[0008] Furthermore, two fixed posts are installed on the inner surface of the collection tube, and springs are installed inside the two fixed posts. Limiting posts are installed inside the two fixed posts, and movable posts are installed on one end surface of each of the two springs. The outer surfaces of the two movable posts are in movable contact with the interior of the fixed posts.

[0009] Furthermore, a baffle is installed on the top surface of both movable columns, and an inlet groove is opened on the outer surface of the filter cylinder, with the outer surface of the baffle in contact with the inner wall of the inlet groove.

[0010] Furthermore, the cleaning assembly includes several limiting brackets and a cleaning pipe. Several limiting brackets are installed on the bottom surface of the agricultural plunger pump, and the cleaning pipe is installed on the inner wall of the pressure chamber. A base plate is welded to the outer surface of several limiting brackets, and a sealing plug is movably installed on the outer surface of several limiting brackets.

[0011] Furthermore, a top ring plate is installed on the top surface of the sealing tube plug, a sealing groove is opened on the bottom surface of the dirt removal tube, a sealing ring is movably installed on the inner wall of the sealing groove, and the outer surface of the sealing ring is in movable contact with the top surface of the top ring plate.

[0012] Furthermore, a magnetic shaft is movably installed inside the sealing tube plug, a turbine is installed on the outer surface of the magnetic shaft, and several annular plates are evenly distributed on the inner surface of the sealing tube plug, with a filter screen installed inside each of the several annular plates.

[0013] Furthermore, a rotary motor is installed inside the sealing plug, and a main magnetic shaft is installed on the outer surface of the output end of the rotary motor.

[0014] Furthermore, a number of threaded top posts are evenly distributed and movably installed inside the base plate, and the top surfaces of the threaded top posts are in movable contact with the bottom surface of the sealing plug.

[0015] The present invention has the following beneficial effects:

[0016] (1) This agricultural plunger pump achieves self-cleaning of the second filter screen through ball valve switching. It has no complicated electrical control and is suitable for use in agricultural environments. Regular backwashing can prevent the second filter screen from clogging and improve long-term working efficiency. The filter screen cylinder is equipped with multiple layers of filter screen plates arranged in a stepped manner. The mesh size decreases layer by layer. Large particles of impurities are blocked by the first layer of filter screen, and small particles are intercepted by the subsequent filter screens, avoiding excessive load on a single filter screen. After rinsing, the water pressure disappears, the compressed spring pushes the movable column to rebound, and the baffle quickly closes the inlet groove to form a physical seal. The filter screen cylinder can be disassembled and cleaned regularly, and the auxiliary cylinder can also be cleaned by disassembling it with threads, extending the overall service life. The clean second filter screen ensures smooth water intake and continuous flow and pressure output, ensuring irrigation efficiency and effectively preventing problems such as air suction, cavitation, or overheating caused by severe clogging of the second filter screen.

[0017] (2) The agricultural plunger pump rotates through a turbine, which causes the pressure chamber to form several vortices. This allows the small particles on the pump head and rubber plunger to be adsorbed. The vortex shear force peels off the tiny particles attached to the surface of the pump head and rubber plunger. The particles gather towards the center of the turbine with the vortex and are intercepted and adsorbed by the annular filter screen. The turbine continues to rotate to ensure that the particles are completely removed from the surface of the parts to avoid residue. After the pressure chamber is cleaned, the rotary motor stops working and the threaded top column is rotated, which causes the sealing plug to move in the limit bracket, thereby removing the top ring plate from the sealing groove, thus facilitating the drainage of water from the pressure chamber.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the agricultural plunger pump of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the agricultural plunger pump of the present invention;

[0021] Figure 3 This is a schematic diagram of the internal structure of the agricultural plunger pump of the present invention from another perspective;

[0022] Figure 4 This is a schematic diagram of the overall structure of the pressure chamber of the present invention;

[0023] Figure 5 This is a schematic diagram of the overall structure of the cleaning component of the present invention;

[0024] Figure 6 This is a schematic diagram of the overall structure of the dirt removal pipe of the present invention;

[0025] Figure 7 This is a schematic diagram of the overall structure of the sealing plug of the present invention;

[0026] Figure 8 This is a schematic diagram of the internal structure of the sealing plug of the present invention;

[0027] Figure 9 This is a schematic diagram of the overall structure of the filter assembly of the present invention;

[0028] Figure 10 This is a schematic diagram of the internal structure of the filter cylinder of the present invention.

[0029] In the diagram: 1. Agricultural plunger pump; 101. Power end; 102. Hydraulic end; 1021. Rubber plunger; 1022. Pump head; 1023. Pressure chamber; 1024. Separating chamber; 103. Cleaning assembly; 1031. Limiting bracket; 1032. Sludge removal pipe; 1033. Sealing pipe plug; 1034. Top ring plate; 1035. Sealing ring; 1036. Sealing groove; 1037. Threaded top column; 1038. Base plate; 1039. Rotary motor; 1040. Main magnetic shaft; 1041. Driven magnetic shaft; 1042. Vortex 1043. Wheel; 1044. Annular plate; 1045. Filter screen one; 105. Filter assembly; 1056. Main inlet pipe; 1057. Secondary inlet pipe; 1058. Ball valve; 1059. Filter screen two; 1050. Adjusting pipe; 1051. Interface pipe; 1052. Collection pipe; 1053. Filter screen cylinder; 1054. Fixed column; 1065. Inlet groove; 1066. Baffle; 1067. Movable column; 1068. Limiting column; 1069. Spring; 1060. Secondary cylinder; 1061. Connecting column; 1062. Filter screen plate. Detailed Implementation

[0030] 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.

[0031] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0032] Please see Figures 1-10This invention provides a technical solution: an agricultural plunger pump, including an agricultural plunger pump 1, a power end 101 inside the agricultural plunger pump 1, a plurality of hydraulic ends 102 inside the agricultural plunger pump 1, a pump head 1022 installed on the outer surface of the output end of each of the plurality of hydraulic ends 102, a rubber plunger 1021 installed on the outer surface of each of the plurality of pump heads 1022, a plurality of pressure chambers 1023 evenly distributed inside the agricultural plunger pump 1, a liquid distribution chamber 1024 inside the agricultural plunger pump 1, a filter assembly 105 installed on one end surface of the liquid distribution chamber 1024, and a cleaning assembly 103 evenly distributed on the bottom surface of each of the plurality of pressure chambers 1023;

[0033] The filter assembly 105 includes a main inlet pipe 1051 and a regulating pipe 1055. The main inlet pipe 1051 is installed on one end surface of the dispensing chamber 1024. The regulating pipe 1055 is installed on one end surface of the main inlet pipe 1051. A collecting pipe 1057 is installed on the bottom surface of the regulating pipe 1055. An interface pipe 1056 is installed on the outer surface of the regulating pipe 1055. A secondary inlet pipe 1052 is installed on the outer surface of the collecting pipe 1057 and the outer surface of the main inlet pipe 1051. Ball valves 1053 are installed inside the secondary inlet pipe 1052, the main inlet pipe 1051, and the interface pipe 1056. A second filter screen 1054 is installed on one end surface of the main inlet pipe 1051. A filter screen cylinder 1058 is threadedly connected to the inside of the collecting pipe 1057. By switching via the ball valve 1053, the second filter screen 1054 can be self-cleaned. This design eliminates the need for complex electrical controls and is suitable for agricultural applications. In environmental use, regular backwashing can prevent filter screen 1054 from clogging, improving long-term working efficiency. The filter screen cylinder 1058 has multiple layers of filter screen plates 1067 arranged in a stepped manner, with the mesh size decreasing layer by layer. Large particles of impurities are blocked by the first layer of filter screen, while fine particles are intercepted by subsequent filter screens, avoiding excessive load on a single filter screen. After rinsing, the water pressure disappears, the compressed spring 1064 pushes the movable column 1062 to rebound, and the baffle 1061 quickly closes the inlet groove 1060, forming a physical seal. The filter screen cylinder 1058 can be disassembled and cleaned regularly, and the auxiliary cylinder 1065 can also be cleaned by disassembling it with threads at the same time, extending the overall service life. The clean filter screen 1054 ensures smooth water intake, continuous flow and pressure output, guarantees irrigation efficiency, and effectively prevents problems such as cavitation, cavitation, or overheating of the agricultural plunger pump 1 caused by severe clogging of filter screen 1054.

[0034] A secondary cylinder 1065 is movably mounted on one end surface of the filter cylinder 1058. A connecting post 1066 is mounted on one end surface of the secondary cylinder 1065. Filter plates 1067 are evenly distributed on the outer surface of the connecting post 1066. Two fixed posts 1059 are mounted on the inner surface of the collection pipe 1057. Springs 1064 and limit posts 1063 are installed inside each of the two fixed posts 1059. Movable posts 1062 are mounted on one end surface of each of the two springs 1064. The outer surfaces of the two movable posts 1062 are in movable contact with the interior of the fixed posts 1059. The top surfaces of the two movable posts 1062... A baffle 1061 is installed together, and an inlet groove 1060 is opened on the outer surface of the filter screen cylinder 1058. The outer surface of the baffle 1061 is in contact with the inner wall of the inlet groove 1060. The water flow impacts the baffle 1061 of the inlet groove 1060, thereby causing the baffle 1061 to drive two movable columns 1062 to move correspondingly within the fixed column 1059. This causes the movable columns 1062 to compress the spring 1064, and the limiting column 1063 limits and blocks the movable columns 1062. The limiting column 1063 prevents the spring 1064 from being over-compressed and protects the spring 1064 from damage, thereby allowing water and impurities to enter the filter screen cylinder 1058.

[0035] The cleaning assembly 103 includes several limiting brackets 1031 and a cleaning pipe 1032. The limiting brackets 1031 are installed on the bottom surface of the agricultural plunger pump 1, and the cleaning pipe 1032 is installed on the inner wall of the pressure chamber 1023. A base plate 1038 is welded to the outer surface of the limiting brackets 1031. A sealing plug 1033 is movably installed on the outer surface of the limiting brackets 1031. A top ring plate 1034 is installed on the top surface of the sealing plug 1033, and a sealing groove 10 is formed on the bottom surface of the cleaning pipe 1032. 36. A sealing ring 1035 is movably installed on the inner wall of the sealing groove 1036. The outer surface of the sealing ring 1035 is in contact with the top surface of the top ring plate 1034. A magnetic shaft 1041 is movably installed inside the sealing plug 1033. A turbine 1042 is installed on the outer surface of the magnetic shaft 1041. Several annular plates 1043 are evenly distributed on the inner surface of the sealing plug 1033. A filter screen 1044 is installed inside each of the several annular plates 1043. A rotary motor 1039 is installed inside the sealing plug 1033. A main magnetic shaft 1040 is mounted on the outer surface of the output end of the rotary motor 1039. Several threaded plungers 1037 are evenly distributed and movably mounted inside the base plate 1038. The top surfaces of the threaded plungers 1037 are in contact with the bottom surface of the sealing plug 1033. The magnetic shaft 1041 drives the turbine 1042 to rotate, thereby forming several vortices in the pressure chamber 1023. This causes the auxiliary small particles on the pump head 1022 and rubber plunger 1021 to be adsorbed. The vortex shear force peels off the particles adhering to the pump head 1022 and rubber plunger 1021. Tiny particles on the surface of the rubber plunger 1021 are drawn towards the center of the turbine 1042 by the vortex and are intercepted and adsorbed by the annular filter screen 1044. The turbine 1042 continues to rotate to ensure that the particles are completely removed from the surface of the component to avoid residue. After the pressure chamber 1023 is cleaned, the rotary motor 1039 stops working and rotates the threaded top column 1037, thereby moving the sealing plug 1033 within the limiting bracket 1031, thereby removing the top ring plate 1034 from the sealing groove 1036, thus facilitating the drainage of water from the pressure chamber 1023.

[0036] The specific working process of this invention is as follows: When the agricultural plunger pump 1 is required to deliver water under high pressure, the suction pipe is connected to the interface pipe 1056, the ball valve 1053 of the auxiliary inlet pipe 1052 is closed, the ball valves 1053 of the main inlet pipe 1051 and the interface pipe 1056 are opened, and the agricultural plunger pump 1 is started. The power end 101 of the agricultural plunger pump 1 drives the pump heads 1022 and rubber plungers 1021 of several hydraulic ends 102 to work in the corresponding pressure chambers 1023, so that the water flows through the interface pipe 1056 into the regulating pipe 1055, then through the filter screen 1054 into the main inlet pipe 1051, through the main inlet pipe 1051 into the distribution chamber 1024, through the distribution chamber 1024 into each pressure chamber 1023, and then through each pressure chamber 1023 for output.

[0037] After the agricultural plunger pump 1 has been working for a period of time, the ball valve 1053 of the auxiliary inlet pipe 1052 is opened, and then the ball valve 1053 of the main inlet pipe 1051 is closed. This changes the direction of water flow in the regulating pipe 1055, causing water to flow vertically downwards from the surface of the filter screen 1054 into the collection pipe 1057. The water flow carries impurities into the collection pipe 1057. The change in the direction of water flow in the regulating pipe 1055 allows water to flush vertically downwards from the surface of the filter screen 1054, removing the attached impurities. The impurities are carried by the water flow into the collection pipe 1057, preventing them from re-entering the main circulation. The water flow also impacts the baffle 10 of the inlet trough 1060. The impact 61 causes the baffle 1061 to move the two movable columns 1062 within the fixed column 1059, thereby compressing the spring 1064. The limiting column 1063 then limits and blocks the movable column 1062, preventing excessive compression of the spring 1064 and protecting it from damage. This allows water and impurities to enter the filter cylinder 1058, which contains multiple filter plates 1067 that block impurities. Water then re-enters the main inlet pipe 1051 from the auxiliary inlet pipe 1052. Open the ball valve 1053 of the main inlet pipe 1051, then close the ball valve 1053 of the auxiliary inlet pipe 1052. Under the elastic action of the spring 1064, the baffle 1061 returns to the inlet groove 1060, thereby preventing impurities from flowing out of the filter cylinder 1058. The self-cleaning of the second filter screen 1054 is achieved solely through switching the ball valve 1053, without complex electrical control, making it suitable for agricultural environments. Regular backwashing can prevent the second filter screen 1054 from clogging, improving long-term working efficiency. Furthermore, the filter cylinder 1058 has multiple layers of filter plates 1067 arranged in a stepped manner, with the mesh size decreasing layer by layer. Large particles of impurities are blocked by the first layer of filter screen, while fine particles are blocked by the second layer. Small particles are intercepted by subsequent filters, preventing excessive load on a single filter. After rinsing, the water pressure disappears, and the compressed spring 1064 pushes the movable column 1062 to rebound. The baffle 1061 quickly closes the inlet slot 1060, forming a physical seal. The filter cylinder 1058 can be disassembled and cleaned periodically, and the auxiliary cylinder 1065 can also be cleaned by disassembling it with threads, extending the overall service life. The clean filter 1054 ensures smooth water intake, continuous flow and pressure output, and guarantees irrigation efficiency. It effectively prevents problems such as cavitation, cavitation, or overheating of the agricultural plunger pump 1 caused by severe clogging of the filter 1054.

[0038] After the agricultural plunger pump 1 has been working for a long time, it stops working and the controller starts the rotary motor 1039. The rotary motor 1039 drives the main magnetic shaft 1040 to rotate, which in turn drives the driven magnetic shaft 1041 to rotate. The driven magnetic shaft 1041 then drives the turbine 1042 to rotate, thereby creating several vortices in the pressure chamber 1023. This causes the auxiliary small particles on the pump head 1022 and the rubber plunger 1021 to be adsorbed. The shearing force of the vortices peels off the particles adhering to the pump head 1022 and the rubber plunger 1021. Tiny particles on the surface of the rubber plunger 1021 are drawn towards the center of the turbine 1042 by the vortex and are intercepted and adsorbed by the annular filter screen 1044. The turbine 1042 continues to rotate to ensure that the particles are completely removed from the surface of the component to avoid residue. After the pressure chamber 1023 is cleaned, the rotary motor 1039 stops working and rotates the threaded top column 1037, thereby moving the sealing plug 1033 within the limiting bracket 1031, thereby removing the top ring plate 1034 from the sealing groove 1036, thus facilitating the drainage of water from the pressure chamber 1023.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An agricultural plunger pump, comprising a power end (101) and several hydraulic ends (102) within the pump (1), wherein a pump head (1022) is mounted on the outer surface of the output end of each hydraulic end (102), and a rubber plunger (1021) is mounted on the outer surface of each pump head (1022), wherein several pressure chambers (1023) are evenly distributed inside the pump (1), and a liquid distribution chamber (1024) is provided inside the pump (1), characterized in that: A filter assembly (105) is installed on one end surface of the liquid separation chamber (1024), and cleaning assemblies (103) are evenly distributed on the bottom surface of several pressure chambers (1023). The filter assembly (105) includes a main inlet pipe (1051) and a regulating pipe (1055). The main inlet pipe (1051) is installed on one end surface of the dispensing chamber (1024). A regulating pipe (1055) is installed on one end surface of the main inlet pipe (1051). A collecting pipe (1057) is installed on the bottom surface of the regulating pipe (1055). An interface pipe (1056) is installed on the outer surface of the regulating pipe (1055). The collecting pipe ( A secondary inlet pipe (1052) is installed on the outer surface of the main inlet pipe (1057) and the outer surface of the main inlet pipe (1051). Ball valves (1053) are installed inside the secondary inlet pipe (1052), the main inlet pipe (1051), and the interface pipe (1056). A filter screen (1054) is installed on one end surface of the main inlet pipe (1051). A filter screen cylinder (1058) is threadedly connected inside the collection pipe (1057). A secondary cylinder (1065) is movably mounted on one end surface of the filter cylinder (1058), a connecting post (1066) is mounted on one end surface of the secondary cylinder (1065), and filter plates (1067) are evenly distributed on the outer surface of the connecting post (1066). Two fixed posts (1059) are installed on the inner surface of the collection tube (1057). Springs (1064) are installed inside the two fixed posts (1059). Limit posts (1063) are installed inside the two fixed posts (1059). Movable posts (1062) are installed on one end surface of the two springs (1064). The outer surfaces of the two movable posts (1062) are in contact with the interior of the fixed posts (1059). The top surfaces of the two movable columns (1062) are jointly equipped with baffles (1061), and the outer surface of the filter cylinder (1058) is provided with an inlet groove (1060). The outer surface of the baffle (1061) is in contact with the inner wall of the inlet groove (1060). The cleaning assembly (103) includes several limiting brackets (1031) and a cleaning pipe (1032). Several limiting brackets (1031) are installed on the bottom surface of the agricultural plunger pump (1). The cleaning pipe (1032) is installed on the inner wall of the pressure chamber (1023). A base plate (1038) is welded to the outer surface of several limiting brackets (1031). A sealing plug (1033) is movably installed on the outer surface of several limiting brackets (1031).

2. The agricultural plunger pump according to claim 1, characterized in that: The top surface of the sealing plug (1033) is equipped with a top ring plate (1034), and the bottom surface of the dirt removal pipe (1032) is provided with a sealing groove (1036). A sealing ring (1035) is movably installed on the inner wall of the sealing groove (1036), and the outer surface of the sealing ring (1035) is in contact with the top surface of the top ring plate (1034).

3. An agricultural plunger pump according to claim 2, characterized in that: The sealing plug (1033) is movably mounted with a magnetic shaft (1041), and a turbine (1042) is mounted on the outer surface of the magnetic shaft (1041). Several annular plates (1043) are evenly distributed and mounted on the inner surface of the sealing plug (1033), and a filter screen (1044) is installed inside each of the several annular plates (1043).

4. An agricultural plunger pump according to claim 3, characterized in that: A rotary motor (1039) is installed inside the sealing plug (1033), and a main magnetic shaft (1040) is installed on the outer surface of the output end of the rotary motor (1039).

5. An agricultural plunger pump according to claim 4, characterized in that: The base plate (1038) has a number of threaded top posts (1037) evenly distributed and movably installed inside, and the top surface of the number of threaded top posts (1037) is in contact with the bottom surface of the sealing plug (1033).

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