Anti-blocking miniature direct-current brushless water pump

Abstract

The invention relates to the technical field of water pumps, in particular to an anti-blocking miniature direct-current brushless water pump. The problem that a water inlet of a water pump is easily blocked in the prior art is solved, and the practicability of equipment is improved. A water inlet pipe is arranged at the top of the impeller cavity, a water outlet pipe is arranged on the side wall of the impeller cavity, the water inlet pipe is provided with a cleaning assembly used for cleaning the water inlet pipe, an impeller assembly is rotationally connected into the impeller cavity, and a control structure used for controlling the impeller assembly to rotate is arranged in the motor cavity. An adjusting structure used for connecting the cleaning assembly with the control structure or disconnecting the cleaning assembly from the control structure is further arranged in the machine shell. When the water outlet pipe is blocked, the cleaning assembly can be controlled through the adjusting structure and the control structure to clean the water inlet pipe, the blocking phenomenon of the water inlet pipe is effectively reduced, and the water purifier has high practicability.

Description

Technical Field

[0001] The invention relates to the technical field of water pumps, and in particular to an anti-clogging miniature direct current brushless water pump. Background Art

[0002] The DC brushless water pump is a small pump driven by direct current, which is widely used in liquid transportation and circulation systems. It has the advantages of high efficiency and low noise.

[0003] The working principle of the existing DC brushless water pump is: the motor drives the internal impeller to rotate, generating centrifugal force or positive pressure, thereby driving the liquid to flow. During the rotation of the impeller, negative pressure is formed at the pump's liquid inlet, prompting the liquid to be sucked from the liquid storage container or pipeline through the water inlet, completing the pressurization and transportation of the liquid.

[0004] Although this can achieve pressurized transportation of liquids, the following problems still exist: during the working process of the DC brushless water pump transporting liquids, since the transported liquid itself may contain impurities, these impurities may accumulate in the water inlet pipe of the water pump, causing the water pump to be blocked, affecting the water inlet volume of the water pump, resulting in a decrease in the water pressure generated by the water pump, and affecting the normal operation of the water pump. Summary of the invention

[0005] The present invention provides an anti-clogging micro DC brushless water pump, which solves the problem of easy clogging of a water inlet of a water pump in the prior art and improves the practicability of the equipment.

[0006] The technical solution of the present invention is as follows:

[0007] An anti-clogging micro DC brushless water pump comprises a casing,

[0008] An impeller cavity and a motor cavity are provided in the casing, a water inlet pipe is provided at the top of the impeller cavity, a water outlet pipe is provided on the side wall of the impeller cavity, the water inlet pipe is provided with a cleaning assembly for cleaning the water inlet pipe, an impeller assembly is rotatably connected in the impeller cavity, a control structure for controlling the rotation of the impeller assembly is provided in the motor cavity, and an adjusting structure for connecting the cleaning assembly to the control structure or disconnecting the cleaning assembly from the control structure is also provided in the casing.

[0009] Furthermore, the cleaning component includes a mounting column, on which a plurality of cleaning blades are fixed, and the water inlet pipe is provided with a water guiding slope on the side close to the impeller chamber, the cross-section of the water guiding slope is a circular structure, and the cross-sectional diameter of the water guiding slope close to the impeller chamber side is smaller than the cross-sectional diameter of the water guiding slope away from the impeller chamber side, each of the cleaning blades abuts against the water guiding slope, and a limiting ring is also fixed on the inner wall of the water inlet pipe, and the limiting ring abuts against the top of each cleaning blade.

[0010] Furthermore, a cleaning layer is fixed on the cleaning blade near the water-guiding slope, and the cleaning layer is made of rubber material. The cleaning layer abuts against the water-guiding slope. The mounting column is provided with a water-guiding arc surface near the water inlet pipe side, and the cross-sectional area of ​​the water-guiding arc surface near the water inlet pipe port is larger than the cross-sectional area of ​​the water-guiding arc surface away from the water inlet pipe port.

[0011] Furthermore, the control structure includes a rotor assembly and a stator assembly, the stator assembly includes a plurality of stator plates, each of the stator plates is provided with a rotor hole at the center, a connecting piece is provided between each of the stator plates and the rotor hole, the rotor assembly includes a rotating column, a plurality of permanent magnets are fixed to the outside of the rotating column, the rotating column is arranged in the rotor hole, a spacing is provided between the rotating column and the inner wall of the rotor hole, and the magnetic properties of each adjacent permanent magnet facing the rotor hole side are opposite.

[0012] Furthermore, each stator sheet is provided with a plurality of positioning grooves on its outer periphery, each positioning groove is slidably connected to the casing, each stator sheet is provided with an installation locking plate on its upper and lower sides, the installation locking plate is threadedly connected to the installation bolt, and the rotating column is fixedly connected to the impeller assembly.

[0013] Furthermore, the adjustment structure includes an adjusting column, a first sliding groove is provided in the rotating column, the adjusting column is slidingly connected to the first sliding groove, a friction column is provided between the mounting column and the rotating column, a second sliding groove is also provided on the rotating column near the mounting column side, the friction column is slidingly connected to the second sliding groove, the friction column is fixedly connected to the adjusting column, a first friction surface is provided at the bottom of the second sliding groove, a second friction surface is provided on the bottom surface of the friction column, and the first friction surface abuts against the second friction surface.

[0014] Furthermore, a control cavity is also provided at the bottom of the casing, the adjusting column is rotatably connected to the top of the control cavity, a connecting column is fixed at the lower end of the adjusting column, a rotating part is provided at the lower end of the connecting column, a rotating groove is provided in the rotating part, the connecting column is rotatably connected to the rotating groove, a sliding column is fixed at the lower end of the rotating part, the sliding column is slidably connected to the casing, a limiting spring is externally engaged with the sliding column, two ends of the limiting spring are respectively fixedly connected to the casing and the rotating part, a limiting bolt is also provided at the end of the sliding column, the limiting bolt is arranged outside the casing, an adjusting disk is rotatably connected to the upper side of the connecting column, a plurality of telescopic parts are provided in the control cavity, the fixed end of each telescopic part is fixedly connected to the casing, and the telescopic end of each telescopic part is fixedly connected to the adjusting disk.

[0015] Furthermore, the adjusting column is a cylindrical structure, a limiting notch is provided at the adjusting column near the end of the mounting column, a third sliding groove is provided at the lower end of the mounting column, and the third sliding groove is slidingly connected to the mounting column and the limiting notch at the same time.

[0016] Furthermore, the impeller assembly includes a sealing cover and a rotating wheel, the sealing cover and the rotating wheel are fixed by bolts, a water storage tank is provided at the center of the rotating wheel, a plurality of water guide grooves are provided between the top of the rotating wheel and the sealing cover, the two ends of each of the water guide grooves are respectively connected to the water storage tank and the inside of the casing, the water outlet pipe and each water guide groove are in the same horizontal plane, and the top of the sealing cover is in contact with the water guide slope.

[0017] Furthermore, a mounting seat is provided outside the casing, the casing is a cylindrical structure, a plurality of fourth sliding grooves are provided outside the casing, a mounting hole is provided on the mounting seat, a sliding protrusion is provided in the mounting hole, the mounting hole is slidingly connected to the casing, the fourth sliding groove and the sliding protrusion are slidingly connected, the casing and the mounting seat are fixed by bolts, and a first mounting foot and a second mounting foot are respectively provided at the lower end of the mounting seat, and threaded holes are provided on the first mounting foot and the second mounting foot.

[0018] The working principle and beneficial effects of the present invention are:

[0019] The working process of this embodiment is as follows: when the water inlet pipe is found to be blocked, the telescopic part is retracted to drive the adjusting disk to move downward, drive the connecting column and the rotating part to move downward, and the friction column moves downward accordingly. At this time, the first friction surface abuts against the second friction surface, and then the wire on the stator sheet is energized to make the rotor start to rotate, and the rotating column drives the cleaning blade to rotate, so as to scrape and clean the scale on the water inlet pipe side; after the scale at the water inlet pipe is cleaned, the telescopic part is relaxed, and then under the action of the limit spring, the connecting column moves upward. At this time, there is a gap between the first friction surface and the second friction surface, and the rotation of the rotating column no longer drives the cleaning blade to rotate. Under the action of the water flow, the cleaning blade is tightly attached to the water guide slope and no longer rotates.

[0020] In this embodiment, an impeller cavity and a motor cavity are arranged in the casing, a water inlet pipe and a water outlet pipe are arranged in the impeller cavity, a cleaning component is arranged in the water inlet pipe, the impeller is rotated by a control structure, and whether the cleaning component is connected to the control structure is controlled by an adjustment structure. When the water outlet pipe is blocked, this embodiment can control the cleaning component to clean the water inlet pipe through the adjustment structure and the control structure, which effectively reduces the blockage of the water inlet pipe and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 It is a structural schematic diagram of the prior art;

[0023] Figure 2 The overall structure of Example 1 is shown in FIG. Figure 1 ;

[0024] Figure 3The overall structure of Example 1 is shown in FIG. Figure 2 ;

[0025] Figure 4 It is a schematic diagram of the internal structure of Example 1;

[0026] Figure 5 This is a schematic diagram of the connection structure between the cleaning component and the adjustment column in Example 1;

[0027] Figure 6 This is a schematic diagram of the structure of the cleaning component in Example 1;

[0028] Figure 7 Schematic diagram of the internal structure of the control chamber in Example 1;

[0029] Figure 8 is a schematic diagram of the connection structure of the stator sheets in Example 1;

[0030] Fig. 9 Schematic diagram of the internal structure of the mounting column in Example 1.

[0031] In the figure:

[0032] 1. Casing; 11. Fourth sliding groove; 12. Impeller cavity; 13. Motor cavity; 14. Control cavity; 2. Water inlet pipe; 21. Water guide slope; 22. Limiting ring; 3. Water outlet pipe; 4. Mounting seat; 41. Mounting hole; 411. Sliding protrusion; 42. First mounting foot; 421. Threaded hole; 43. Second mounting foot; 5. Cleaning assembly; 51. Cleaning blade; 511. Cleaning layer; 52. Mounting column; 521. Water guide arc surface; 522. Third sliding groove; 6. Adjusting column; 61. Friction column; 611. Second friction surface; 62. Limit spring; 63. Connecting column; 64. Rotating member; 641. Sliding column; 642. Limit bolt; 643. Rotating groove; 65. Adjusting plate; 66. Telescopic member; 67. Limiting notch; 7. Stator plate; 71. Install locking plate; 72. Connecting member; 73. Rotor hole; 74. Positioning groove; 8. Rotating column; 81. First sliding groove; 82. Second sliding groove; 821. First friction surface; 83. Permanent magnet; 9. Impeller assembly; 91. Sealing cover; 92. Rotating wheel; 921. Water storage tank; 93. Water guide tank. DETAILED DESCRIPTION

[0033] The following will be combined with 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] Embodiment 1:

[0035] like Figure 2 to Figure 9 As shown, this embodiment proposes an anti-clogging micro DC brushless water pump, whose structure includes a casing 1. The impeller chamber 12 and the motor chamber 13 in this embodiment are arranged in the casing 1. The impeller chamber 12 is used to place a space for the boosting device, and the motor chamber 13 provides a placement space for the impeller power device. The water inlet pipe 2 is arranged at the top of the impeller chamber 12, the water outlet pipe 3 is arranged on the side wall of the impeller chamber 12, and the cleaning component 5 is arranged on the water inlet pipe 2 to clean the water inlet pipe 2. The impeller assembly 9 is rotatably arranged in the impeller chamber 12, and the control structure is arranged in the motor chamber 13 to control the rotation of the impeller assembly 9. The adjustment structure is arranged in the casing 1 to connect the cleaning component 5 with the control structure or disconnect the cleaning component 5 from the control structure.

[0036] The cleaning assembly 5 in this embodiment includes a mounting column 52, a plurality of cleaning blades 51 are fixedly arranged on the mounting column 52, a water guide slope 21 is arranged on the side of the water inlet pipe 2 close to the impeller chamber 12, the cross section of the water guide slope 21 is a circular structure, the cross section diameter of the water guide slope 21 close to the impeller chamber 12 is smaller than the cross section diameter of the water guide slope 21 away from the impeller chamber 12, and each cleaning blade 51 abuts against the water guide slope 21. Such a design of the water guide slope 21 allows the liquid entering the water pump to change the direction of entering the impeller chamber 12 after passing through the water guide slope 21, making it easier to flow to the side wall of the impeller chamber 12, and facilitating the liquid to be discharged from the water outlet pipe 3. The limiting ring 22 is fixedly arranged on the inner wall of the water inlet pipe 2, and the limiting ring 22 abuts against the top of each cleaning blade 51. The design of the limiting ring 22 in this embodiment can prevent the cleaning blade 51 from detaching from the water outlet pipe 3. When the water pump of this embodiment is working normally, under the action of water flow pressure, the cleaning blades 51 do not rotate, and the cleaning blades 51 can play a role in diverting the water flow. After passing through the cleaning blades 51, the water flow flows more easily toward the side wall of the impeller chamber 12, thereby improving the pressurization effect of the water pump.

[0037] The cleaning layer 511 in this embodiment is fixedly arranged on the side of the cleaning blade 51 close to the water guide slope 21, and the cleaning layer 511 is made of rubber material, and the cleaning layer 511 abuts against the water guide slope 21. Such a cleaning layer 511 can be more closely attached to the water guide slope 21 due to the strong ductility of the rubber material, thereby improving the cleaning effect of the water guide slope 21. The water guide arc surface 521 is arranged on the side of the mounting column 52 close to the water inlet pipe 2, and the area of ​​the cross section of the water guide arc surface 521 close to the water inlet pipe 2 is greater than the area of ​​the cross section of the water guide arc surface 521 away from the water inlet pipe 2. Such a design of the water guide arc surface 521 ensures that the water flow directly changes the movement direction of the water flow after passing through the water guide slope 21, so that the water flow is more likely to flow to the side wall of the impeller chamber 12, and the water flow is more likely to flow to the outlet pipe 3.

[0038] The control structure in this embodiment includes a rotor assembly and a stator assembly. The stator assembly includes a plurality of stator sheets 7. The stacking design of the plurality of stator sheets 7 not only allows air gaps between the stator sheets 7, thereby improving the heat dissipation effect of the stator sheets 7, but also makes the stacking structure easier to assemble and maintain, thereby improving production efficiency and reducing production costs. The rotor hole 73 is arranged at the center of each stator sheet 7, the connecting member 72 is arranged between each stator sheet 7 and the rotor hole 73, and a wire is wound on the connecting member 72. The rotor assembly includes a rotating column 8, a plurality of permanent magnets 83 are fixedly arranged on the outside of the rotating column 8, the rotating column 8 is arranged in the rotor hole 73, and a spacing is provided between the rotating column 8 and the inner wall of the rotor hole 73, and the magnetic properties of each adjacent permanent magnet 83 facing the side of the rotor hole 73 are opposite. In this embodiment, by sequentially conducting the wires on each connecting member 72, a magnetic field is sequentially generated on each connecting member 72 on the stator sheet 7, thereby driving the rotating column 8 to rotate, so that the rotating column 8 can be controlled to rotate without direct contact with the rotating column 8, thereby reducing friction loss and improving transmission efficiency.

[0039] In this embodiment, a plurality of positioning grooves 74 are arranged on the outer periphery of each stator sheet 7, each positioning groove 74 is slidably connected to the housing 1, and mounting locking pieces 71 are arranged on the upper and lower sides of each stator sheet 7, the mounting locking pieces 71 are threadedly connected to the mounting bolts, and the rotating column 8 is fixedly connected to the impeller assembly 9. Such a design ensures that the stator sheet 7 can be installed and fixed in the housing 1, and the stator sheet 7 is not prone to rotational deviation. Moreover, the design of the mounting locking pieces 71 can facilitate the assembly and disassembly of the stator sheet 7, and facilitate the maintenance of the stator sheet 7.

[0040] The adjustment structure in this embodiment includes an adjustment column 6, a first sliding groove 81 is arranged in the rotating column 8, the adjustment column 6 is slidingly connected to the first sliding groove 81, the friction column 61 is arranged between the mounting column 52 and the rotating column 8, the second sliding groove 82 is arranged on the side of the rotating column 8 close to the mounting column 52, the friction column 61 is slidingly connected to the second sliding groove 82, the friction column 61 is fixedly connected to the adjustment column 6, the first friction surface 821 is arranged at the bottom of the second sliding groove 82, the second friction surface 611 is arranged on the bottom surface of the friction column 61, and the first friction surface 821 abuts against the second friction surface 611. When the first friction surface 821 and the second friction surface 611 are in contact with each other, the rotation of the rotating column 8 drives the adjusting column 6 to rotate, and the adjusting column 6 drives the cleaning component 5 to rotate to clean the pipe mouth of the water inlet pipe 2; when the first friction surface 821 is away from the second friction surface 611, the rotation of the rotating column 8 does not drive the adjusting column 6 to rotate, and under the action of water pressure, the cleaning component 5 does not rotate, and the rotation of the cleaning component 5 will not reduce the amount of liquid entering the impeller chamber 12.

[0041] In this embodiment, the control chamber 14 is arranged at the bottom of the housing 1, the adjustment column 6 is rotatably connected to the top of the control chamber 14, the connecting column 63 is fixedly arranged at the lower end of the adjusting column 6, the rotating member 64 is arranged at the lower end of the connecting column 63, the rotating groove 643 is arranged in the rotating member 64, the connecting column 63 is rotatably connected to the rotating groove 643, the sliding column 641 is fixedly arranged at the lower end of the rotating member 64, and the sliding column 641 is slidably connected to the housing 1. Such a design ensures that the adjusting column 6 can control the position of the adjusting column 6 under the premise of ensuring normal rotation. The limit spring 62 is sleeved outside the sliding column 641, and the two ends of the limit spring 62 are fixedly connected to the housing 1 and the rotating member 64 respectively. In this embodiment, under the action of the limit spring 62, the first friction surface 821 maintains a spacing with the first friction surface 821, ensuring that when the water pump is working normally, the liquid will not reduce the pressurization of the liquid due to the rotation of the cleaning component 5. The limiting bolt 642 is arranged at the end of the sliding column 641 to limit the displacement of the sliding column 641 and prevent it from being separated from the housing 1. The limiting bolt 642 is arranged outside the housing 1, and the adjusting disk 65 is rotatably arranged on the upper side of the connecting column 63 to connect the telescopic member 66. A plurality of telescopic members 66 are arranged in the control chamber 14, and the fixed end of each telescopic member 66 is fixedly connected to the housing 1, and the telescopic end of each telescopic member 66 is fixedly connected to the adjusting disk 65. The telescopic member 66 used in this embodiment is preferably a hydraulic cylinder or a pneumatic cylinder. Among them, the hydraulic cylinder or the cylinder is the prior art, and this embodiment will not be repeated.

[0042] The adjusting column 6 in this embodiment is a cylindrical structure, the limiting notch 67 is arranged at the end of the adjusting column 6 close to the mounting column 52, the third sliding groove 522 is arranged at the lower end of the mounting column 52, and the third sliding groove 522 is slidingly connected with the mounting column 52 and the limiting notch 67 at the same time. Such a limiting notch 67 design enables the mounting column 52 to be directly driven to rotate through the limiting notch 67 when the adjusting column 6 rotates.

[0043] The impeller assembly 9 in this embodiment includes a sealing cover 91 and a rotating wheel 92, which are fixed by bolts. A water storage tank 921 is arranged at the center of the rotating wheel 92 to guide water flow into the impeller chamber 12. A plurality of water guide grooves 93 are arranged between the top of the rotating wheel 92 and the sealing cover 91, and the two ends of each water guide groove 93 are respectively connected to the water storage tank 921 and the inside of the casing 1, and the water outlet pipe 3 and each water guide groove 93 are in the same horizontal plane, and the top of the sealing cover 91 abuts against the water guide slope 21. Such a design is to increase the hydraulic pressure of the liquid flowing to the water outlet pipe 3 through the centrifugal force generated when the rotating wheel 92 rotates, thereby improving the boosting effect of the water pump.

[0044] In this embodiment, a mounting seat 4 is also provided outside the housing 1. The housing 1 is a cylindrical structure. A plurality of fourth sliding grooves 11 are provided outside the housing 1. A mounting hole 41 is provided on the mounting seat 4. A sliding protrusion 411 is provided in the mounting hole 41. The mounting hole 41 is slidingly connected to the housing 1. The fourth sliding groove 11 and the sliding protrusion 411 are slidingly connected. The housing 1 and the mounting seat 4 are fixed by bolts to facilitate the removal and installation of the mounting seat 4. The first mounting foot 42 and the second mounting foot 43 are respectively provided at the lower end of the mounting seat 4. The first mounting foot 42 and the second mounting foot 43 are both provided with a threaded hole 421. This is to facilitate the installation and fixation of the housing 1 and provide a stable environment for the boosting operation of the water pump.

[0045] The working process of this embodiment is as follows: when the water inlet pipe 2 is found to be blocked, the telescopic member 66 is retracted to drive the adjusting disk 65 to move downward, drive the connecting column 63 and the rotating member 64 to move downward, and the friction column 61 moves downward accordingly. At this time, the first friction surface 821 abuts against the second friction surface 611, and then the wire on the stator sheet 7 is energized, so that the rotor assembly starts to rotate, and the rotating column 8 drives the cleaning leaf 51 to rotate, so as to scrape and clean the scale on the side of the water inlet pipe 2; after the scale at the water inlet pipe 2 is cleaned, the telescopic member 66 is relaxed, and then under the action of the limit spring 62, the connecting column 63 moves upward. At this time, there is a gap between the first friction surface 821 and the second friction surface 611, and the rotation of the rotating column 8 no longer drives the cleaning leaf 51 to rotate. Under the action of the water flow, the cleaning leaf 51 is tightly attached to the water guide slope 21 and no longer rotates.

[0046] Embodiment 2:

[0047] On the basis of Example 1, this embodiment loads a delayed start module in the control panel of the drive motor. Specifically, when the drive motor is started, the receiving module will be triggered after a period of time, so that the control panel can normally receive the signal from the angle sensor. Preferably, the delay time is 15 seconds, that is, if the drive motor has not pumped up water after running for 15 seconds, it will enter the idling protection state (the drive motor stops working) to avoid temporary internal blockage due to the water pump sucking in particles (there is still water flow inside the water pump), so as to improve the operation stability of this embodiment.

[0048] Example 3

[0049] On the basis of Example 1 or Example 2, the drive motor in this embodiment has an overvoltage and undervoltage protection module. Preferably, a voltage sensor is installed inside the drive motor to monitor the circuit voltage through the voltage sensor to ensure the safety of the use of this embodiment. Preferably, the overvoltage protection trigger voltage is 32±2V, and the undervoltage protection trigger voltage is 9±1V.

[0050] Example 4

[0051] Based on Example 1 or Example 2 or Example 3, the drive motor in this embodiment is equipped with a frequency converter to adjust the input frequency and voltage of the motor, effectively adjust the speed and torque of the motor, achieve constant power, and reduce the energy consumption of this embodiment. The constant power of this embodiment is preferably 65-70W.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-clogging micro DC brushless water pump, comprising a housing (1), characterized in that: The casing (1) is provided with an impeller chamber (12) and a motor chamber (13); a water inlet pipe (2) is provided at the top of the impeller chamber (12); a water outlet pipe (3) is provided on the side wall of the impeller chamber (12); the water inlet pipe (2) is provided with a cleaning assembly (5) for cleaning the water inlet pipe (2); an impeller assembly (9) is rotatably connected in the impeller chamber (12); a control structure for controlling the rotation of the impeller assembly (9) is provided in the motor chamber (13); and an adjustment structure for connecting the cleaning assembly (5) to the control structure or disconnecting the cleaning assembly (5) from the control structure is also provided in the casing (1).

2. The anti-clogging micro DC brushless water pump according to claim 1, characterized in that: The cleaning component (5) comprises a mounting column (52), on which a plurality of cleaning blades (51) are fixed; a water guide slope (21) is provided on the side of the water inlet pipe (2) close to the impeller chamber (12); the cross section of the water guide slope (21) is a circular structure; the cross section diameter of the water guide slope (21) close to the impeller chamber (12) is smaller than the cross section diameter of the water guide slope (21) away from the impeller chamber (12); each of the cleaning blades (51) is in contact with the water guide slope (21); a limiting ring (22) is also fixed on the inner wall of the water inlet pipe (2); the limiting ring (22) is in contact with the top of each cleaning blade (51).

3. The anti-clogging micro DC brushless water pump according to claim 2, characterized in that: A cleaning layer (511) is fixed on the cleaning blade (51) near the water guide slope (21), the cleaning layer (511) being made of a rubber material, and the cleaning layer (511) is in contact with the water guide slope (21). A water guide arc surface (521) is provided on the mounting column (52) near the water inlet pipe (2), and the cross-sectional area of ​​the water guide arc surface (521) near the water inlet pipe (2) opening is larger than the cross-sectional area of ​​the water guide arc surface (521) far from the water inlet pipe (2) opening.

4. The anti-clogging micro DC brushless water pump according to claim 3, characterized in that: The control structure comprises a rotor assembly and a stator assembly, wherein the stator assembly comprises a plurality of stator sheets (7), each of the stator sheets (7) being provided with a rotor hole (73) at its center, and a connecting piece (72) being provided between each of the stator sheets (7) and the rotor hole (73); the rotor assembly comprises a rotating column (8), a plurality of permanent magnets (83) being fixed on the outer side of the rotating column (8), the rotating column (8) being arranged in the rotor hole (73), a spacing being provided between the rotating column (8) and the inner wall of the rotor hole (73), and the magnetic properties of each of the adjacent permanent magnets (83) facing the rotor hole (73) being opposite.

5. The anti-clogging micro DC brushless water pump according to claim 4, characterized in that: A plurality of positioning grooves (74) are provided on the outer periphery of each stator plate (7), each positioning groove (74) is slidably connected to the casing (1), and a mounting locking plate (71) is provided on the upper side and the lower side of each stator plate (7), respectively, and the mounting locking plate (71) is connected to the mounting bolt via a threaded connection, and the rotating column (8) is fixedly connected to the impeller assembly (9).

6. The anti-clogging micro DC brushless water pump according to claim 4, characterized in that: The adjustment structure comprises an adjustment column (6), a first sliding groove (81) is provided in the rotating column (8), the adjustment column (6) is slidably connected to the first sliding groove (81), a friction column (61) is provided between the mounting column (52) and the rotating column (8), a second sliding groove (82) is further provided on the rotating column (8) near the mounting column (52), the friction column (61) is slidably connected to the second sliding groove (82), the friction column (61) is fixedly connected to the adjustment column (6), a first friction surface (821) is provided at the bottom of the second sliding groove (82), a second friction surface (611) is provided on the bottom surface of the friction column (61), and the first friction surface abuts against the second friction surface (611).

7. The anti-clogging micro DC brushless water pump according to claim 6, characterized in that: A control chamber (14) is further provided at the bottom of the housing (1); the adjusting column (6) is rotatably connected to the top of the control chamber (14); a connecting column (63) is fixed at the lower end of the adjusting column (6); a rotating member (64) is provided at the lower end of the connecting column (63); a rotating groove (643) is provided in the rotating member (64); the connecting column (63) is rotatably connected to the rotating groove (643); a sliding column (641) is fixed at the lower end of the rotating member (64); the sliding column (641) is slidably connected to the housing (1); and the outer sleeve of the sliding column (641) is connected to A limit spring (62), the two ends of which are fixedly connected to the housing (1) and the rotating member (64), respectively; a limit bolt (642) is further provided at the end (641) of the sliding column, and the limit bolt (642) is arranged outside the housing (1); an adjusting disk (65) is rotatably connected to the upper side of the connecting column (63); a plurality of telescopic members (66) are provided in the control chamber (14); the fixed end of each telescopic member (66) is fixedly connected to the housing (1), and the telescopic end of each telescopic member (66) is fixedly connected to the adjusting disk (65).

8. The anti-clogging micro DC brushless water pump according to claim 6, characterized in that: The adjusting column (6) is a cylindrical structure. A limiting notch (67) is provided at the end of the adjusting column (6) close to the mounting column (52). A third sliding groove (522) is provided at the lower end of the mounting column (52). The third sliding groove (522) is slidably connected to the mounting column (52) and the limiting notch (67) at the same time.

9. The anti-clogging micro DC brushless water pump according to claim 2, characterized in that: The impeller assembly (9) comprises a sealing cover (91) and a rotating wheel (92), wherein the sealing cover (91) and the rotating wheel (92) are connected and fixed by bolts, a water storage groove (921) is provided at the center of the rotating wheel (92), a plurality of water guide grooves (93) are provided between the top of the rotating wheel (92) and the sealing cover (91), the two ends of each of the water guide grooves (93) are respectively connected to the water storage groove (921) and the inside of the casing (1), the water outlet pipe (3) and each of the water guide grooves (93) are in the same horizontal plane, and the top of the sealing cover (91) is in contact with the water guide inclined surface (21).

10. The anti-clogging micro DC brushless water pump according to claim 1, characterized in that: A mounting seat (4) is also provided outside the casing (1); the casing (1) is a cylindrical structure; a plurality of fourth sliding grooves (11) are provided outside the casing (1); a mounting hole (41) is also provided on the mounting seat (4); a sliding protrusion (411) is provided inside the mounting hole (41); the mounting hole (41) is slidingly connected to the casing (1); the fourth sliding groove (11) and the sliding protrusion (411) are slidingly connected; the casing (1) and the mounting seat (4) are fixed by bolt connection; a first mounting foot (42) and a second mounting foot (43) are also provided at the lower end of the mounting seat (4); and threaded holes (421) are provided on the first mounting foot (42) and the second mounting foot (43).

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