Electronic water pump suitable for agricultural tractor

Abstract

The invention relates to the technical field of electronic water pumps, in particular to an electronic water pump suitable for an agricultural tractor. The electronic water pump comprises a water pump body, the top of the water pump body fixedly communicates with a water inlet pipe opening, and one side of the top of the water pump body fixedly communicates with a water outlet pipe opening; a cable terminal is fixedly connected to one side of the bottom of the water pump body, a motor body is fixed in the water pump body, and an isolation sealing plate is fixedly connected to the position, located on the upper side of the motor body, in the water pump body. According to the designed filtering mechanism, a cooling liquid working medium entering the water pump body can be further filtered, particulate matter impurities doped in cooling liquid are removed, meanwhile, the filtering net plate used for filtering the cooling liquid is further cleaned, the inner wall and the outer wall wrapping the filtering net plate are cleaned and scraped synchronously, meshes of the filtering net plate are prevented from being blocked, and the service life of the cooling liquid is prolonged. And adhesive impurities such as water scale can be cleaned and removed, so that normal operation of the filtering mechanism is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of electronic water pumps, and in particular to an electronic water pump suitable for agricultural tractors. Background Art

[0002] The electronic water pump of agricultural tractors is an important component of modern tractors. It is mainly used to cool the engine and ensure that it can maintain the optimal operating temperature range under various working conditions. The electronic water pump is driven by an electric motor and has higher efficiency and better control performance than traditional mechanical water pumps.

[0003] In fact, the working environment of agricultural tractors is harsh. The coolant working medium drawn by the electronic water pump during operation contains a large number of scale impurities and impurities such as metal iron filings generated by the wear of internal parts during long-term working. In the actual working process, such impurities are not only easy to cause greater collision erosion damage to the impeller inside the electronic water pump, but also will adhere to the electronic water pump or part of the inner wall of the delivery pipeline if not cleaned in time under long-term working conditions, affecting the internal liquid circulation and the service life of the electronic water pump.

[0004] Therefore, an electronic water pump suitable for an agricultural tractor is proposed. Summary of the invention

[0005] The object of the present invention is to provide an electronic water pump suitable for agricultural tractors. The filtering mechanism designed in the present application can further filter and process the coolant working medium entering the water pump body, remove the particulate impurities mixed in the coolant, and further clean the filter screen used for cooling liquid filtering. The inner wall and outer wall of the filter screen are cleaned and scraped synchronously to avoid clogging of the filter screen mesh, and to clean and remove adherent impurities such as scale, thereby ensuring the normal operation of the filtering mechanism to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electronic water pump suitable for agricultural tractors, comprising a water pump body, a water inlet port fixedly connected to the top of the water pump body, a water outlet port fixedly connected to the top side of the water pump body, a fixed bracket fixed to the outside of the water pump body, a cable terminal fixedly connected to the bottom side of the water pump body, a motor body fixed to the inside of the water pump body, and an isolation sealing plate fixedly connected to the inside of the water pump body at the upper side of the motor body, a water cavity is formed between the isolation sealing plate and the water pump body, an impeller is rotatably connected in the water cavity, a connecting shaft is fixed to the middle of the impeller, the connecting shaft passes through the isolation sealing plate and is fixed to the output shaft of the motor body, and the cable terminal is connected to the bottom main board of the motor body;

[0007] The water inlet pipe has a built-in filtering mechanism, which includes a conical filter screen plate detachably connected to the water inlet pipe, and the bottom of the filter screen plate is designed with an open structure, a turntable is rotatably connected to the opening at the bottom of the filter screen plate, and active cleaning blades are distributed in an annular manner at equal distances on the inner wall of the filter screen plate, and the bottom of the active cleaning blades is fixed to the turntable, the active cleaning blades are designed to fit the filter screen plate, and the active cleaning blades are designed with an arc-shaped structure that matches the curvature of the inner wall of the conical filter screen plate.

[0008] Preferably, passive cleaning blades are distributed annularly and equidistantly on the lower end surface of the conical screen plate, and the bottom of the passive cleaning blades is fixed to a turntable, and the turntable is rotatably connected to the bottom opening of the filter screen plate via an annular slide rail.

[0009] Preferably, the passive cleaning blades are designed to fit the lower end surface of the filter screen plate, and the passive cleaning blades and the active cleaning blades are made of stainless steel metal material.

[0010] Preferably, the water inlet pipe port is composed of pipe one and pipe two, wherein the bottom of pipe two is integrally connected to the water pump body, the adjacent ends of pipe one and pipe two are fixedly connected with connecting flanges, the top of the filter screen plate is located between the two connecting flanges, and the adjacent surfaces of the two connecting flanges are glued with sealing gaskets and fixed by bolts.

[0011] Preferably, an impurity collecting member is provided on the upper end surface of the turntable, and the impurity collecting member collects and processes impurities that fall off the inner wall of the filter screen plate through the active cleaning blades.

[0012] Preferably, the impurity collecting member comprises an impurity collecting barrel, and the bottom of the impurity collecting barrel is not in contact with the turntable, the bottom of the impurity collecting barrel is open, and at least three groups of feed ports connected to the impurity collecting barrel are arranged at equal distances in an annular shape at the bottom of the impurity collecting barrel.

[0013] Preferably, a diverter cover with a conical structure is integrally connected to the top of the impurity collecting barrel, an outer fixing ring is threadedly connected to the outside of the impurity collecting barrel near the top, and connecting rods are fixedly connected to the outer side of the outer fixing ring in an equidistant manner, and one end of the connecting rod away from the outer fixing ring is fixedly connected to the inner wall of pipe one.

[0014] Preferably, a spiral blade is rotatably connected inside the impurity collecting barrel, and a rotating shaft passes through and is fixedly connected to the middle of the spiral blade, and the bottom of the rotating shaft is fixedly connected to the center of the upper end surface of the turntable.

[0015] Preferably, the bottom opening of the conical mesh plate is rotatably connected to a magnetic turntable 2, and the outer sides of the magnetic turntable 2 are respectively fixed to one end of an active cleaning blade and a passive cleaning blade, a magnetic turntable 1 is arranged below the magnetic turntable 2, the lower end surface of the magnetic turntable 1 is fixed to the top of the connecting shaft, the magnetic turntable 1 is magnetically transmission connected to the magnetic turntable 2, and the two do not contact each other.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The filter mechanism designed in the present application can further filter the coolant working medium entering the water pump body, remove the particulate impurities mixed in the coolant, and further clean the filter screen used for coolant filtration, clean and wrap the inner wall and outer wall of the filter screen synchronously to avoid clogging of the filter screen, and clean and remove adherent impurities, such as scale, to ensure the normal operation of the filter mechanism;

[0018] 2. The present application designs an impurity collection member to collect and process the impurities cleaned by the filter screen in a targeted manner, thereby preventing the impurities from always escaping inside the water pump body and blocking the filter screen for a second time or impacting the filter screen to damage the filter screen under the drive of the water flow;

[0019] 3. The transmission mode of the cleaning blades in the present application is replaced by another mechanical drive transmission. The transmission mode of the cleaning blades driven by a turntable in the present application depends on the impact of the water flow in the water inlet pipe. When the water flow in the water inlet pipe of the water pump body is small, the magnetic turntable mode designed in the present application can be replaced for further driving. The two driving modes of the present application can be used interchangeably, or they can coexist. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is the overall structural view of the present invention;

[0022] Figure 2 It is a front view of the overall structure of the present invention;

[0023] Figure 3 It is a partial cross-sectional view of the overall structure of the present invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 A structural view of an impurity collecting member of the present invention;

[0026] Figure 6 A partial cross-sectional view of the impurity collecting member of the present invention;

[0027] Figure 7 It is a structural view of the magnetic turntable 1 and the magnetic turntable 2 of the present invention;

[0028] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle;

[0029] Fig. 9 An exploded view of the filtering mechanism of the present invention;

[0030] Fig.10 For the present invention Fig. 9 Front view of .

[0031] Description of reference numerals:

[0032] 1. Pump body; 11. Impeller; 12. Motor body; 13. Isolation sealing plate; 14. Connecting shaft; 2. Outlet pipe; 3. Inlet pipe; 4. Fixed bracket; 5. Cable terminal; 6. Magnetic turntable 1; 7. Magnetic turntable 2; 31. Pipeline 1; 32. Pipeline 2; 33. Connecting flange; 34. Filter plate; 35. Turntable; 36. Passive cleaning blades; 37. Active cleaning blades; 38. Impurity collection piece; 381. Impurity collection cylinder; 382. Connecting rod; 383. Diverter cover; 384. External fixing ring; 385. Feed inlet; 386. Rotating shaft; 387. Spiral blades. DETAILED DESCRIPTION

[0033] 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.

[0034] See also Figures 1 to 10 , the present invention provides a technical solution:

[0035] An electronic water pump suitable for an agricultural tractor comprises a water pump body 1, a water inlet pipe 3 is fixedly connected to the top of the water pump body 1, a water outlet pipe 2 is fixedly connected to one side of the top of the water pump body 1, a fixing bracket 4 is fixedly fixed to the outside of the water pump body 1, a cable terminal 5 is fixedly connected to one side of the bottom of the water pump body 1, a motor body 12 is fixedly fixed to the inside of the water pump body 1, and an isolation sealing plate 13 is fixedly connected to the inside of the water pump body 1 at the upper side of the motor body 12, a water cavity is formed between the isolation sealing plate 13 and the water pump body 1, an impeller 11 is rotatably connected to the water cavity, a connecting shaft 14 is fixed to the middle of the impeller 11, the connecting shaft 14 passes through the isolation sealing plate 13 and is fixed to the output shaft of the motor body 12, and the cable terminal 5 is connected to the bottom mainboard of the motor body 12;

[0036] The water inlet pipe 3 has a built-in filtering mechanism, which includes a conical filter screen plate 34 detachably connected to the water inlet pipe 3, and the bottom of the filter screen plate 34 is designed to be open-shaped. A turntable 35 is rotatably connected to the opening at the bottom of the filter screen plate 34. Active cleaning blades 37 are distributed in an annular shape and at equal distances on the inner wall of the filter screen plate 34, and the bottom of the active cleaning blades 37 are fixed to the turntable 35. The active cleaning blades 37 are designed to fit the filter screen plate 34. The active cleaning blades 37 are designed to be arc-shaped and match the curvature of the inner wall of the conical filter screen plate 34. Passive cleaning blades 36 are distributed in an annular shape and at equal distances on the lower end surface of the conical screen plate, and the bottom of the passive cleaning blades 36 is fixed to the turntable 35. The turntable 35 is rotatably connected to the bottom opening of the filter screen plate 34 through an annular slide rail. The passive cleaning blades 36 are designed to fit the lower end surface of the filter screen plate 34, and the passive cleaning blades 36 and the active cleaning blades 37 are made of stainless steel.

[0037] By adopting the above technical solution, when working, the water inlet pipe 3 and the water outlet pipe 2 are further connected with the mechanical transmission parts to be installed in the tractor equipment through pipelines, and then the cable terminal 5 is connected with the tractor energy supply equipment, and then the motor body 12 inside the water pump body 1 is controlled to run, and the impeller 11 in the water cavity in the water pump body 1 is further driven to rotate through the connecting shaft 14, and the coolant is sucked into the water cavity through the water inlet pipe 3, and then discharged through the water outlet pipe 2. When the coolant enters through the water inlet pipe 3, it first meets the filtering mechanism in the water inlet pipe 3. The coolant contacts the filter screen 34 in the filter mechanism, and the coolant is filtered through the filter screen 34 to remove internal particulate impurities. In the process of contacting the filter screen 34, the coolant will impact the active cleaning blades 37 connected to the inner wall of the filter screen 34. Under the action of the arc angle of the active cleaning blades 37, the active cleaning blades 37 will be driven to rotate on the inner wall of the filter screen 34. When the active cleaning blades 37 rotate, they will scrape the inner wall of the filter screen 34 to prevent the filter screen 34 from being attached or filtered. The inclination angle of the inner wall of the filter screen plate 34 and the force of the coolant impacting downward are gathered to the upper end surface of the turntable 35, and are subsequently collected and processed by the impurity collector 38. When the active cleaning blades 37 rotate, they will drive the turntable 35 fixed with the active cleaning blades 37 at the bottom to rotate. At this time, the turntable 35 rotates together with the filter screen plate 34 under the action of the annular slide rail between the turntable 35. When the turntable 35 rotates, the passive cleaning blades 36 fixed to the turntable 35 will also rotate synchronously, so as to scrape and clean the lower end surface of the filter screen plate 34. The lower end surface of the filter screen plate 34 is cleaned. The main function is to clean some adherent impurities, such as scale, etc. There are fewer such impurities, and most of them will remain in the filter mesh plate 34. The filtering mechanism designed in the present application can further filter and process the coolant working medium entering the water pump body 1, remove the particulate impurities mixed in the coolant, and further clean the filter mesh plate 34 used for coolant filtration. The inner wall and outer wall of the filter mesh plate 34 are cleaned and scraped simultaneously to avoid clogging of the filter mesh plate 34, and to clean and remove adherent impurities, such as scale, to ensure the normal operation of the filtering mechanism.

[0038] Specifically, Figure 3 and Figure 4 As shown, the water inlet pipe 3 is composed of a pipe 1 31 and a pipe 2 32, wherein the bottom of the pipe 2 32 is integrally connected to the water pump body 1, and the adjacent ends of the pipe 1 31 and the pipe 2 32 are fixedly connected with a connecting flange 33, and the top of the filter screen plate 34 is located between the two connecting flanges 33, and the adjacent surfaces of the two connecting flanges 33 are glued with sealing gaskets and fixed by bolts.

[0039] By adopting the above technical solution, the water inlet pipe 3 composed of pipe 1 31 and pipe 2 32 is connected by the connecting flange 33, which is convenient for the user to disassemble the water inlet pipe 3, install and maintain the internal filtering mechanism, and remove impurities. The sealing gasket can effectively ensure the sealing effect of the connection between pipe 1 31 and pipe 2 32 to prevent the coolant from leaking.

[0040] Specifically, Figure 4 , Figure 5 and Figure 6 As shown, the upper end surface of the rotating disk 35 is provided with an impurity collecting member 38, and the impurity collecting member 38 collects and processes the impurities that are scraped off the inner wall of the filter screen plate 34 by the active cleaning blades 37. The impurity collecting member 38 includes an impurity collecting barrel 381, and the bottom of the impurity collecting barrel 381 does not contact the rotating disk 35. The bottom of the impurity collecting barrel 381 is open, and at least three groups of feed ports 385 that are connected to the impurity collecting barrel 381 are arranged at equal distances in an annular manner at the bottom of the impurity collecting barrel 381. The top of the impurity collecting barrel 381 is integrally connected with a cone The impurity collecting barrel 381 has a diverter cover 383 with a shaped structure, an outer fixing ring 384 is threadedly connected to the outside near the top, and a connecting rod 382 is fixedly connected to the outer side of the outer fixing ring 384 in an equidistant manner, and one end of the connecting rod 382 away from the outer fixing ring 384 is fixedly connected to the inner wall of the pipe 31, and the inside of the impurity collecting barrel 381 is rotatably connected to a spiral blade 387, and a rotating shaft 386 is passed through the middle of the spiral blade 387 and fixedly connected, and the bottom of the rotating shaft 386 is fixedly connected to the center of the upper end surface of the turntable 35.

[0041] By adopting the above technical solution and designing the impurity collecting member 38, the impurities cleaned by the filter screen 34 can be collected and processed in a directional manner, so as to prevent the impurities from always escaping inside the water pump body 1 and blocking the filter screen 34 for a second time or impacting the filter screen 34 and causing damage to the filter screen 34 under the drive of the water flow;

[0042] When the impurities are scraped and cleaned to the upper end surface of the turntable 35 by the active cleaning blades 37, the rotation of the turntable 35 will drive the rotating shaft 386 to rotate, and the rotating shaft 386 will further drive the spiral blades 387 to rotate in the impurity collecting barrel 381, and the impurities will enter between the spiral blades 387 in the impurity collecting barrel 381 through the feed port 385 opened at the bottom of the impurity collecting barrel 381. With the cooperation of the spiral blades 387 and the impurity collecting barrel 381, the impurities will be pushed into the preset collection cavity between the top of the spiral blades 387 and the impurity collecting barrel 381. Subsequent users can disassemble the water inlet pipe 3 according to the working cycle, such as one month or one quarter, and disassemble the impurity collecting barrel 381 to clean the internal impurities. The diverter cover 383 designed on the top of the impurity collecting barrel 381 can also divert the coolant in the water inlet pipe 3, so that it is fully in contact with the filter screen plate 34, and slow the flow of the coolant to prevent the coolant from directly impacting the filter screen plate 34 and causing damage to the filter screen plate 34.

[0043] Specifically, Figure 7 and Figure 6 As shown, the bottom opening of the conical mesh plate is rotatably connected to a magnetic turntable 27, and the outer sides of the magnetic turntable 27 are respectively fixed to one end of the active cleaning blade 37 and the passive cleaning blade 36, a magnetic turntable 16 is arranged below the magnetic turntable 27, the lower end surface of the magnetic turntable 16 is fixed to the top of the connecting shaft 14, and the magnetic turntable 16 is magnetically connected to the magnetic turntable 27, and the two do not contact each other.

[0044] By adopting the above technical scheme, the present application replaces the transmission mode of the cleaning blades with another mechanical drive transmission. The transmission mode of the cleaning blades driven by the turntable 35 of the present application depends on the impact of the water flow in the water inlet pipe. When the water flow in the water inlet pipe of the water pump body 1 is small, the magnetic turntable 35 designed by the present application can be replaced for further driving. The two driving modes of the present application can be used interchangeably, or the two can coexist. The magnetic turntable 1 6 and the magnetic turntable 2 7 are mainly connected by magnetic attraction to each other. When the connecting shaft 14 rotates, the magnetic turntable 1 6 is driven to rotate. At this time, the magnetic turntable 1 6 drives the magnetic turntable 2 7 to rotate through magnetic attraction.

[0045] Working principle: When working, the water inlet pipe 3 and the water outlet pipe 2 are further connected with the mechanical transmission parts to be installed in the tractor equipment through pipelines, and then the cable terminal 5 is connected with the tractor energy supply equipment, and then the motor body 12 inside the water pump body 1 is controlled to run, and the impeller 11 in the water cavity in the water pump body 1 is further driven to rotate through the connecting shaft 14, and the coolant is sucked into the water cavity through the water inlet pipe 3, and then discharged through the water outlet pipe 2. When the coolant enters through the water inlet pipe 3, it first contacts with the filtering mechanism in the water inlet pipe 3, At this time, the coolant contacts the filter screen 34 in the filter mechanism, and the coolant is filtered through the filter screen 34 to remove internal particulate impurities. In the process of contacting the filter screen 34, the coolant will impact the active cleaning blades 37 connected to the inner wall of the filter screen 34. Under the action of the arc angle of the active cleaning blades 37, the active cleaning blades 37 will be driven to rotate on the inner wall of the filter screen 34. When the active cleaning blades 37 rotate, they will scrape the inner wall of the filter screen 34, and the filter screen 34 will avoid attached impurities or filtered impurities. At this time, along the filter The inclination angle of the inner wall of the mesh plate 34 and the force of the coolant impacting downward are gathered to the upper end surface of the turntable 35, which is subsequently collected and processed by the impurity collecting member 38. When the active cleaning blades 37 rotate, the turntable 35 fixed with the active cleaning blades 37 at the bottom will be driven to rotate. At this time, the turntable 35 rotates together with the annular slide rail between the filter mesh plate 34. When the turntable 35 rotates, the passive cleaning blades 36 fixed to the turntable 35 will also rotate synchronously, so as to scrape and clean the lower end surface of the filter mesh plate 34. The lower end surface of the filter mesh plate 34 is cleaned by the active cleaning blades 37. If some adherent impurities, such as scale, are to be cleaned, and such impurities are relatively few, most of the impurities will remain in the filter mesh plate 34. The filter mechanism designed in the present application can further filter and process the coolant working medium entering the water pump body 1, remove the particulate impurities mixed in the coolant, and further clean the filter mesh plate 34 used for coolant filtration. The inner wall and outer wall of the filter mesh plate 34 are cleaned and scraped simultaneously to avoid clogging of the filter mesh plate 34, and to clean and remove adherent impurities, such as scale, to ensure the normal operation of the filter mechanism.

[0046] The water inlet 3, which is composed of the pipe 1 31 and the pipe 2 32, is connected by the connecting flange 33, which is convenient for the user to disassemble the water inlet 3, install and maintain the internal filtering mechanism, and remove impurities. The sealing gasket can effectively ensure the sealing effect of the connection between the pipe 1 31 and the pipe 2 32 to prevent the coolant from leaking.

[0047] By designing the impurity collecting member 38, the impurities cleaned by the filter screen 34 can be collected and processed in a directional manner, so as to prevent the impurities from always escaping inside the water pump body 1 and blocking the filter screen 34 for a second time or impacting the filter screen 34 and causing damage to the filter screen 34 under the drive of the water flow;

[0048] When the impurities are scraped and cleaned to the upper end surface of the turntable 35 by the active cleaning blades 37, the rotation of the turntable 35 will drive the rotating shaft 386 to rotate, and the rotating shaft 386 will further drive the spiral blades 387 to rotate in the impurity collecting barrel 381, and the impurities will enter between the spiral blades 387 in the impurity collecting barrel 381 through the feed port 385 opened at the bottom of the impurity collecting barrel 381. With the cooperation of the spiral blades 387 and the impurity collecting barrel 381, the impurities will be pushed into the preset collection cavity between the top of the spiral blades 387 and the impurity collecting barrel 381. Subsequent users can disassemble the water inlet pipe 3 according to the working cycle, such as one month or one quarter, and disassemble the impurity collecting barrel 381 to clean the internal impurities. The diverter cover 383 designed on the top of the impurity collecting barrel 381 can also divert the coolant in the water inlet pipe 3, so that it is fully in contact with the filter screen plate 34, and slow the flow of the coolant to prevent the coolant from directly impacting the filter screen plate 34 and causing damage to the filter screen plate 34.

[0049] The present application replaces the transmission mode of the cleaning blades with another mechanical drive transmission. The transmission mode of the cleaning blades driven by the turntable 35 in the present application depends on the impact of the water flow in the water inlet pipe. When the water flow in the water inlet pipe of the water pump body 1 is small, the magnetic turntable 35 designed in the present application can be replaced for further driving. The two driving modes of the present application can be used interchangeably, or the two can coexist. The magnetic turntable 1 6 and the magnetic turntable 2 7 are mainly connected by magnetic attraction to each other. When the connecting shaft 14 rotates, it drives the magnetic turntable 1 6 to rotate. At this time, the magnetic turntable 1 6 drives the magnetic turntable 2 7 to rotate through magnetic attraction.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electronic water pump suitable for an agricultural tractor, comprising a water pump body (1), the top of the water pump body (1) is fixedly connected to a water inlet (3), one side of the top of the water pump body (1) is fixedly connected to a water outlet (2), a fixing bracket (4) is fixedly provided outside the water pump body (1), and one side of the bottom of the water pump body (1) is fixedly connected to a cable terminal (5), characterized in that: A motor body (12) is fixed inside the water pump body (1), and an isolation sealing plate (13) is fixedly connected inside the water pump body (1) at an upper position of the motor body (12); a water cavity is formed between the isolation sealing plate (13) and the water pump body (1), and an impeller (11) is rotatably connected inside the water cavity; a connecting shaft (14) is fixed in the middle of the impeller (11), and the connecting shaft (14) passes through the isolation sealing plate (13) and is fixed to the output shaft of the motor body (12); the cable terminal (5) is connected to the bottom main board of the motor body (12); The water inlet pipe (3) has a built-in filtering mechanism, the filtering mechanism comprising a conical filter screen plate (34) detachably connected to the water inlet pipe (3), the bottom of the filter screen plate (34) being designed in an open-shaped structure, a turntable (35) being rotatably connected to the bottom opening of the filter screen plate (34), active cleaning blades (37) being distributed in an annular manner and at equal distances on the inner wall of the filter screen plate (34), the bottom of the active cleaning blades (37) being fixed to the turntable (35), the active cleaning blades (37) being designed to fit the filter screen plate (34), and the active cleaning blades (37) being designed in an arc shape to match the arc of the inner wall of the conical filter screen plate (34).

2. The electronic water pump suitable for agricultural tractors according to claim 1, characterized in that: Passive cleaning blades (36) are distributed in an annular manner and at equal distances on the lower end surface of the conical screen plate, and the bottom of the passive cleaning blades (36) is fixed to a rotating disk (35). The rotating disk (35) is rotatably connected to the bottom opening of the filter screen plate (34) via an annular slide rail.

3. The electronic water pump suitable for agricultural tractors according to claim 2, characterized in that: The passive cleaning blade (36) is designed to fit the lower end surface of the filter screen plate (34), and the passive cleaning blade (36) and the active cleaning blade (37) are made of stainless steel metal material.

4. The electronic water pump suitable for agricultural tractors according to claim 3, characterized in that: The water inlet pipe (3) is composed of a pipe 1 (31) and a pipe 2 (32), wherein the bottom of the pipe 2 (32) is integrally connected to the water pump body (1), and adjacent ends of the pipe 1 (31) and the pipe 2 (32) are fixedly connected with a connecting flange (33), and the top of the filter screen plate (34) is located between the two connecting flanges (33), and the adjacent surfaces of the two connecting flanges (33) are glued with sealing gaskets and fixed by bolt connection.

5. The electronic water pump suitable for agricultural tractors according to claim 4, characterized in that: The upper end surface of the rotating disk (35) is provided with an impurity collecting member (38), and the impurity collecting member (38) collects and processes impurities that are scraped off the inner wall of the filter screen plate (34) by the active cleaning blades (37).

6. The electronic water pump suitable for agricultural tractors according to claim 5, characterized in that: The impurity collecting member (38) comprises an impurity collecting barrel (381), and the bottom of the impurity collecting barrel (381) does not contact the rotating disk (35). The bottom of the impurity collecting barrel (381) is open, and at least three groups of feed ports (385) communicating with the impurity collecting barrel (381) are provided at equal intervals in an annular manner at the bottom of the impurity collecting barrel (381).

7. The electronic water pump suitable for agricultural tractors according to claim 6, characterized in that: The top of the impurity collecting barrel (381) is integrally connected with a diverter cover (383) of a conical structure, the outside of the impurity collecting barrel (381) is threadedly connected with an outer fixing ring (384) near the top, and the outer side of the outer fixing ring (384) is annularly fixedly connected with connecting rods (382) at equal distances, and the end of the connecting rod (382) away from the outer fixing ring (384) is fixedly connected to the inner wall of the pipeline (31).

8. The electronic water pump suitable for agricultural tractors according to claim 7, characterized in that: The impurity collecting barrel (381) is rotatably connected to a spiral blade (387) inside, and a rotating shaft (386) passes through and is fixedly connected to the middle of the spiral blade (387), and the bottom of the rotating shaft (386) is fixedly connected to the center of the upper end surface of the rotating disk (35).

9. The electronic water pump suitable for agricultural tractors according to claim 8, characterized in that: The bottom opening of the conical mesh plate is rotatably connected to a magnetic turntable 2 (7), and the outer sides of the magnetic turntable 2 (7) are respectively fixed to one end of an active cleaning blade (37) and a passive cleaning blade (36). A magnetic turntable 1 (6) is arranged below the magnetic turntable 2 (7), and the lower end surface of the magnetic turntable 1 (6) is fixed to the top of the connecting shaft (14). The magnetic turntable 1 (6) is connected to the magnetic turntable 2 (7) by magnetic transmission, and the two do not contact each other.

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