Light high-speed magnetic drive centrifugal pump

Abstract

The invention relates to the technical field of centrifugal pumps, and discloses a light high-speed magnetic drive centrifugal pump which comprises a first shell and a second shell which are fixedly installed mutually, a first flow guide mechanism is arranged in the first shell and comprises a flow guide part, and the flow guide part is fixedly installed on the inner wall of the first shell; an impeller is arranged in the first shell, a second flow guide mechanism is arranged on the impeller, the second flow guide mechanism comprises a first blade and a second blade which are fixedly installed on the two sides of the impeller, and the rotating direction of the first blade and the rotating direction of the second blade are opposite to the rotating direction of the flow guide part. The first shell is provided with the flow guide parts, the multiple flow guide parts are provided with the first flow guide faces and the second flow guide faces, water flow can axially rotate and radially move along the first shell under the action of the first flow guide faces and the second flow guide faces, the water flow can smoothly pass through the second shell to be discharged out of the water outlet, and loss caused by local pressure increase is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of centrifugal pumps, and in particular relates to a light-duty high-speed magnetic drive centrifugal pump. Background Art

[0002] The aeration liquid in the aeration tank usually contains a large number of bubbles. When using a conventional pump for transportation, since the conventional pump relies on the compression effect of the liquid during operation, when it transports the aeration liquid, the large number of bubbles in the aeration liquid causes the overall volume of the liquid to be compressed, thereby converting the pressure energy into internal energy. At this time, the overall energy efficiency of the pump is reduced.

[0003] The operation of a centrifugal pump relies on the centrifugal force of the liquid's own rotation to drive it. It does not produce a large compression effect on the liquid during operation, which greatly reduces the pressure energy converted into internal energy in the liquid, making it suitable for the transportation of aeration liquid.

[0004] Chinese patent application number CN203655659U discloses a micro single-suction vertical centrifugal pump comprising a micromotor and an impeller driven by its rotor, and a cavity containing the impeller. The cavity, based on the orientation of its inner wall, comprises the following sections: an upper portion of the cavity facing the upper end face of the impeller; a lower portion of the cavity facing the lower end face of the impeller, where the pump's suction port is located or leads to it; a side portion of the cavity facing the outer edge of the impeller, leading to the pump's discharge port; and a passageway in the upper portion of the cavity extending from an opening in the inner wall to an opening in the outer wall. This design can alleviate the noise problem that can be severe when the water level in the tank in which the pump operates is lower than the upper portion of the cavity.

[0005] However, this technical solution still has at least the following drawbacks: although this solution can effectively solve the noise problem of the centrifugal pump, it does not significantly improve the overall efficiency of the centrifugal pump. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a lightweight, high-speed magnetically driven centrifugal pump. By arranging a guide member on the first shell and arranging a first guide surface and a second guide surface on the guide member, the effect produced by the two can make the water flow rotate axially and move radially along the first shell, so that the water flow can smoothly pass through the second shell and be discharged from the water outlet, avoiding the increase of local pressure and loss. By arranging first blades and second blades on the impeller, the water flow can move radially along the impeller under the action of centrifugal force. At the same time, the angle design of the first blade and the second blade can accelerate the movement of the water flow in the axial direction of the impeller, so that it can drive the water flow further to the second shell, thereby improving energy efficiency.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] A light-duty, high-speed magnetically driven centrifugal pump comprises a first shell and a second shell fixedly mounted to each other, a first flow guide mechanism being provided in the first shell, the first flow guide mechanism comprising a flow guide member fixedly mounted on the inner wall of the first shell, an impeller being provided inside the first shell, a second flow guide mechanism being provided on the impeller, the second flow guide mechanism comprising a first blade and a second blade fixedly mounted on both sides of the impeller, the rotation direction of the first blade and the second blade being opposite to the rotation direction of the flow guide member, and when the impeller rotates, the first blade and the second blade drive the water flow to rotate so that the water flow moves radially along the first shell and enters the flow guide member through centrifugal force.

[0009] As a preferred embodiment of the present invention, the guide member includes a first guide surface and a second guide surface, the first guide surface and the second guide surface are arranged at an angle, when the water flows through the first guide surface, it moves circumferentially along the first shell, and when it passes through the second guide surface, it moves circumferentially and radially along the first shell at the same time.

[0010] As a preferred embodiment of the present invention, the first blade is inclined from the outer side to the center of the impeller, and the inclination direction is opposite to the direction of rotation of the impeller. The second blade is inclined from the center to the outer side of the impeller, and the inclination direction is the same as the direction of rotation of the impeller. When the first blade rotates, the water flow moves radially and axially toward the second shell at the same time. When the second blade rotates, the water flow enters the first shell.

[0011] As a preferred embodiment of the present invention, a notch is provided on the side of the impeller, and a guide slope is provided on one side of the notch. When the impeller rotates, the guide slope generates an axial thrust for the water flow. A water hole is also provided on the impeller, and the water hole is inclined along the circumference of the impeller so that when the impeller rotates, the water flows from the first blade side to the second blade side through the water hole.

[0012] As a preferred embodiment of the present invention, a water outlet is installed on the second shell, and an exhaust mechanism is also provided on the second shell. The exhaust mechanism includes a mounting frame, and a plunger is rotatably mounted on the mounting frame. The bottom of the plunger movably passes through the second shell and extends to the outside, and the bottom of the plunger is adapted to the shape of the inner wall of the second shell, and a groove is provided on the side of the plunger.

[0013] As a preferred embodiment of the present invention, a water inlet is installed inside the second shell, an inducer is provided in the water inlet, the inducer is fixedly connected to the impeller through a rotating shaft, a water inlet pipe is provided at one end of the water inlet, a water suction pipe is installed at one end of the water inlet pipe, an adjustment mechanism is provided on the outside of the water suction pipe, and the adjustment mechanism is used to adjust the cross-sectional area of ​​the water suction pipe.

[0014] As a preferred embodiment of the present invention, the adjustment mechanism includes an extrusion rod fixedly installed on the water suction pipe, and a fixed plate is fixedly installed on one side of the extrusion rod, an insertion rod is installed on the fixed plate, a movable ring is movably sleeved on the insertion rod, a sleeve is rotatably installed on the movable ring, and a rotating rod is movably inserted on the sleeve. When the rotating rod rotates, it drives the extrusion rod to move to squeeze the water suction pipe.

[0015] As a preferred embodiment of the present invention, the adjustment mechanism also includes mounting plates fixedly installed on the upper and lower sides of the suction pipe, the ends of the rotating rod are rotatably connected to the mounting plates, and a driving assembly is provided on the mounting plate located at the top. The driving assembly includes a cylinder fixedly installed on the mounting plate, and a first pull rod is fixedly and rotatably installed on the output end of the cylinder, a second pull rod is rotatably installed on one end of the first pull rod, and one end of the second pull rod is fixedly connected to one end of the rotating rod.

[0016] As a preferred embodiment of the present invention, a filtering mechanism is provided between the water inlet and the water inlet pipe, the filtering mechanism includes a filter tube, and the two ends of the filter tube are respectively connected to the water inlet and the water inlet pipe, a filter element is movably connected inside the filter tube, a filter screen is installed inside the filter element, an adjusting rod is rotatably connected to the filter tube, and the adjusting rod is fixedly connected to the filter element.

[0017] As a preferred embodiment of the present invention, a magnetic coupler is provided at one end of the first shell, and the magnetic coupler includes a first rotor, a second rotor and a mounting shell, the second rotor is fixedly connected to the impeller, and a power source is installed at one end of the mounting shell, and the output end of the power source is fixedly connected to the first rotor.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides a flow guide member on the first shell, and provides a first flow guide surface and a second flow guide surface on the flow guide member. The effect of the two surfaces can cause the water flow to rotate axially along the first shell and move radially, so that the water flow can smoothly pass through the second shell and be discharged from the water outlet, thereby avoiding the increase of local pressure and the resulting loss.

[0020] The present invention provides the impeller with first blades and second blades so that the water flow can move radially along the impeller under the action of centrifugal force. At the same time, the angle design of the first blades and the second blades can accelerate the movement of the water flow in the axial direction of the impeller, so that it can drive the water flow to move further toward the second shell, thereby improving energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the lightweight high-speed magnetic drive centrifugal pump of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the second shell of the present invention;

[0023] Figure 3 This is a structural diagram of the inducer of the present invention;

[0024] Figure 4 This is a structural diagram of the flow guide of the present invention;

[0025] Figure 5 This is a structural diagram of the first blade of the present invention;

[0026] Figure 6 This is a structural diagram of the second blade of the present invention;

[0027] Figure 7 This is a structural diagram of the magnetic coupler of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of the plunger of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of the plunger in the closed state of the present invention;

[0030] Figure 10 This is a schematic structural diagram of the plunger in the open state of the present invention;

[0031] Figure 11 This is a schematic structural diagram of the water suction pipe of the present invention;

[0032] Figure 12 This is a structural diagram of the rotating rod of the present invention;

[0033] Figure 13 It is a structural schematic diagram of the filter screen of the present invention.

[0034] Reference numerals:

[0035] 100, first housing; 101, flow guide; 102, first flow guide surface; 103, second flow guide surface; 104, second housing; 105, water outlet; 106, water inlet; 107, inducer;

[0036] 200, impeller; 201, first blade; 202, water hole; 203, second blade; 204, notch; 205, guide slope;

[0037] 300, mounting frame; 301, plunger; 302, groove;

[0038] 400, water inlet pipe; 401, water suction pipe; 402, mounting plate; 403, cylinder; 404, first pull rod; 405, second pull rod; 406, rotating rod; 407, collar; 408, movable ring; 409, insert rod; 410, fixing plate; 411, extrusion rod;

[0039] 500, power source; 501, mounting housing; 502, first rotor; 503, second rotor;

[0040] 600, filter tube; 601, filter element; 602, filter screen; 603, adjustment rod. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0042] Example 1:

[0043] like Figures 1 to 13 As shown, a lightweight high-speed magnetically driven centrifugal pump includes a first housing 100 and a second housing 104 fixedly mounted to each other. A first flow guiding mechanism is provided in the first housing 100, and the first flow guiding mechanism includes a flow guiding member 101, which is fixedly mounted on the inner wall of the first housing 100. An impeller 200 is provided inside the first housing 100, and a second flow guiding mechanism is provided on the impeller 200. The second flow guiding mechanism includes a first blade 201 and a second blade 203 fixedly mounted on both sides of the impeller 200, and the rotation direction of the first blade 201 and the second blade 203 is opposite to the rotation direction of the flow guiding member 101. When the impeller 200 rotates, the first blade 201 and the second blade 203 drive the water flow to rotate so that it moves radially along the first housing 100 and enters the flow guiding member 101 through centrifugal force.

[0044] like Figure 3 、 Figure 4 As shown, in a specific embodiment, the flow guide 101 includes a first flow guide surface 102 and a second flow guide surface 103. The first flow guide surface 102 and the second flow guide surface 103 are arranged at an angle. When water flows through the first flow guide surface 102, it moves circumferentially along the first shell 100. When water flows through the second flow guide surface 103, it moves both circumferentially and radially along the first shell 100. In this configuration, multiple flow guides 101 are provided to enhance the guiding effect on the water flow. The portion of the first shell 100 where the flow guides 101 are mounted is curved to guide the water flow.

[0045] like Figure 3 、 Figure 5 、 Figure 6As shown, further, the first blades 201 are inclined from the outside toward the center of the impeller 200, and the inclination direction is opposite to the rotation direction of the impeller 200. The second blades 203 are inclined from the center toward the outside of the impeller 200, and the inclination direction is the same as the rotation direction of the impeller 200. When the first blades 201 rotate, the water flow moves simultaneously radially and axially toward the second housing 104. When the second blades 203 rotate, the water flow enters the first housing 100. In this arrangement, the water outlet angles at the outer ends of the first blades 201 and the second blades 203 are large, so as to increase the speed of the water flow in the tangential direction and reduce the speed in the radial direction, thereby avoiding energy loss caused by high-speed impact with the first housing 100. At the same time, the water flow enters the guide member 101 after maintaining the same direction of rotation as the impeller 200.

[0046] like Figure 5 、 Figure 6 As shown, further, a notch 204 is provided on the side of the impeller 200, and a guide slope 205 is provided on one side of the notch 204. When the impeller 200 rotates, the guide slope 205 generates an axial thrust on the water flow of the impeller 200. The impeller 200 also has a water hole 202, which is arranged obliquely along the circumference of the impeller 200 so that when the impeller 200 rotates, the water flows through the water hole 202 from the side of the first blade 201 to the side of the second blade 203. In this arrangement, the arrangement of the water hole 202 allows the water to flow from the impeller 200 on the side of the first blade 201 to the side of the second blade 203, so that water flows through both sides of the impeller 200, reducing the axial force on the impeller 200. At the same time, the oblique arrangement of the water hole 202 allows the water to enter the water hole 202 when the impeller 200 rotates and generates a counter-movement with the water flow.

[0047] like Figure 2 、 Figure 8 、 Figure 9 、 Figure 10As shown, further, a water outlet 105 is installed on the second shell 104, and an exhaust mechanism is also provided on the second shell 104, the exhaust mechanism includes a mounting frame 300, and a plunger 301 is rotatably mounted on the mounting frame 300, the bottom of the plunger 301 movably passes through the second shell 104 and extends to the outside, and the bottom of the plunger 301 is adapted to the shape of the inner wall of the second shell 104, and a groove 302 is provided on the side of the plunger 301. In this arrangement, the plunger 301 is installed on one side of the top of the second shell 104, and the intersection with the inner wall of the second shell 104 is inclined. When the plunger 301 rotates ninety degrees, the groove 302 on its side connects the inside and outside of the second shell 104 to allow gas to be discharged. When the plunger 301 is reset, the groove 302 is completely located outside the second shell 104, so that the second shell 104 cannot be exhausted through the groove 302. At the same time, the bottom of the plunger 301 is adapted to the shape of the inner wall of the second shell 104, so that when the plunger 301 is in the reset state, the continuous and smooth state of the second shell 104 is guaranteed.

[0048] Example 2:

[0049] like Figure 3 、 Figure 11 、 Figure 12 As shown, in a specific embodiment, a water inlet 106 is mounted within the second housing 104. An inducer 107 is disposed within the water inlet 106 and is fixedly connected to the impeller 200 via a rotating shaft. A water inlet pipe 400 is disposed at one end of the water inlet 106, and a water suction pipe 401 is mounted at one end of the water inlet pipe 400. An adjustment mechanism is disposed on the outside of the water suction pipe 401 for adjusting the cross-sectional area of ​​the water suction pipe 401. In this configuration, the inducer 107 is used to increase the water pressure at the water inlet 106 to prevent the precipitation of bubbles in the water due to excessively low pressure.

[0050] like Figure 11 、 Figure 12As shown, further, the adjustment mechanism includes an extrusion rod 411 fixedly mounted on the water suction pipe 401, and a fixed plate 410 is fixedly mounted on one side of the extrusion rod 411, a plug rod 409 is mounted on the fixed plate 410, a movable ring 408 is movably sleeved on the plug rod 409, a sleeve 407 is rotatably mounted on the movable ring 408, and a rotating rod 406 is movably inserted on the sleeve 407. When the rotating rod 406 rotates, the extrusion rod 411 is driven to move to squeeze the water suction pipe 401. The adjustment mechanism also includes It includes mounting plates 402 fixedly mounted on the upper and lower sides of the suction pipe 401, the ends of the rotating rod 406 are rotatably connected to the mounting plates 402, and a driving assembly is provided on the mounting plate 402 at the top, and the driving assembly includes a cylinder 403 fixedly mounted on the mounting plate 402, and a first pull rod 404 is fixedly and rotatably mounted on the output end of the cylinder 403, a second pull rod 405 is rotatably mounted on one end of the first pull rod 404, and one end of the second pull rod 405 is fixedly connected to one end of the rotating rod 406. In this configuration, two groups of rotating rods 406 are provided and are located at both ends of the water suction pipe 401 respectively. Each group of rotating rods 406 is two symmetrically distributed semicircles. When the two groups of rotating rods 406 are rotated to a state parallel to the cross-section of the water suction pipe 401, the rotating rods 406 of each group form a circle to support the water suction pipe 401. Conversely, if the two groups of rotating rods 406 are rotated to an inclined state, the area of ​​each group of rotating rods 406 in the axial direction of the water suction pipe 401 is reduced, thereby driving the squeezing rods 411 to squeeze the water suction pipe 401 and reduce its cross-sectional area.

[0051] like Figure 1 、 Figure 2 、 Figure 13 As shown, in a specific embodiment, a filtering mechanism is provided between the water inlet 106 and the water inlet pipe 400. The filtering mechanism includes a filter tube 600, and the two ends of the filter tube 600 are respectively connected to the water inlet 106 and the water inlet pipe 400. A filter element 601 is movably connected to the interior of the filter tube 600, and a filter screen 602 is installed inside the filter element 601. An adjustment rod 603 is rotatably connected to the filter tube 600, and the adjustment rod 603 is fixedly connected to the filter element 601. In this arrangement, when the centrifugal pump is operating, impurities are filtered after water flows through the filter screen 602. The filter screen 602 is composed of two plane meshes fixed vertically. After the filter screen 602 has been used for a period of time, the filter element 601 can be driven to rotate by rotating the adjustment rod 603. The filter element 601 drives the filter screen 602 to rotate, thereby replacing the filtering surface of the filter screen 602, thereby extending its use times.

[0052] Example 3:

[0053] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 7As shown, a magnetic coupling is further provided at one end of the first housing 100. The magnetic coupling includes a first rotor 502, a second rotor 503, and a mounting shell 501. The second rotor 503 is fixedly connected to the impeller 200. A power source 500 is mounted at one end of the mounting shell 501. The output end of the power source 500 is fixedly connected to the first rotor 502. In this arrangement, the power source 500 can be a motor. When the motor is in operation, it drives the first rotor 502 to rotate, and the first rotor 502 drives the second rotor 503 to rotate, thereby rotating the impeller 200.

[0054] The implementation principle of the light high-speed magnetic drive centrifugal pump of this embodiment is as follows: during operation, the impeller 200 rotates and drives the inducer 107 to rotate at the same time. The inducer 107 applies pressure to the water at the water inlet 106 to increase the water pressure at the water inlet 106, thereby suppressing the precipitation of bubbles and reducing the impact of cavitation on the centrifugal pump. After the water flows into the impeller 200, it rotates rapidly under the action of the first blade 201 and flows toward the inner wall of the first shell 100 under the action of its own centrifugal force. While the impeller 200 rotates, water enters through the water hole 202, so that part of the water flows into the side where the second blade 203 is located, thereby reducing the thrust generated by the water flow on the impeller 200 in the axial direction. At the same time, when the second blade 203 rotates, it drives the water flow to the edge of the impeller 200 and flows to the inner wall of the first shell 100 through the notch 204.

[0055] When the water flows in the first shell 100, it rotates along the guide member 101 and flows toward the second shell 104 under the action of the first guide surface 102 and the second guide surface 103. During this process, the water in the second shell 104 rotates along the inner wall and is discharged through the water outlet 105.

[0056] When the centrifugal pump is working at a high power and absorbs a large amount of water, the control cylinder 403 is extended at this time, and the cylinder 403 drives the second pull rod 405 to rotate through the first pull rod 404, so that the second pull rod 405 drives the rotating rod 406 to rotate, and the rotating rod 406 rotates until its plane is parallel to the cross-section of the water suction pipe 401. During this process, the rotating rod 406 drives the insertion rod 409 to move through the collar 407 and the movable ring 408, thereby moving the extrusion rod 411. At this time, the multiple extrusion rods 411 drive the water suction pipe 401 to expand to increase its cross-sectional area. At this time, when the centrifugal pump is working, the expansion of the water suction pipe 401 reduces the flow rate of water, thereby reducing the internal negative pressure, thereby improving the service life of the centrifugal pump.

[0057] When the centrifugal pump is working at a low power and the water suction volume is small, the control cylinder 403 is contracted at this time, and the cylinder 403 drives the rotating rod 406 to rotate through the first pull rod 404 and the second pull rod 405, and the rotating rod 406 drives the inserted rod 409 to move through the sleeve ring 407 and the movable ring 408, thereby moving the extrusion rod 411 and squeezing the water suction pipe 401. At this time, the cross-sectional area of ​​the water suction pipe 401 is reduced to appropriately increase the flow rate and avoid the efficiency of the centrifugal pump being reduced due to too small a flow rate. At the same time, keeping the cross-sectional area of ​​the water suction pipe 401 in a reduced state during startup can speed up the establishment of negative pressure and shorten the water filling time of the water suction pipe 401.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. Lightweight high-speed magnetic drive centrifugal pump, characterized in that: The invention comprises a first shell (100) and a second shell (104) fixedly mounted on each other, wherein a first flow guiding mechanism is arranged in the first shell (100), the first flow guiding mechanism comprises a flow guiding piece (101), the flow guiding piece (101) is fixedly mounted on the inner wall of the first shell (100), an impeller (200) is arranged inside the first shell (100), and a second flow guiding mechanism is arranged on the impeller (200), the second flow guiding mechanism comprises a first blade (201) and a second blade (203) fixedly mounted on both sides of the impeller (200), the rotation direction of the first blade (201) and the second blade (203) is opposite to the rotation direction of the flow guiding piece (101), and when the impeller (200) rotates, the first blade (201) and the second blade (203) drive the water flow to rotate so that the water flow moves radially along the first shell (100) and enters the flow guiding piece (101) due to centrifugal force.

2. The light-duty high-speed magnetic drive centrifugal pump according to claim 1, characterized in that: The flow guide (101) comprises a first flow guide surface (102) and a second flow guide surface (103); the first flow guide surface (102) and the second flow guide surface (103) are arranged at an angle; when the water flows through the first flow guide surface (102), the water flows circumferentially along the first shell (100); when the water flows through the second flow guide surface (103), the water flows simultaneously circumferentially and radially along the first shell (100).

3. The light-duty high-speed magnetic drive centrifugal pump according to claim 2, characterized in that: The first blade (201) is inclined from the outer side of the impeller (200) to the center, and the inclination direction is opposite to the rotation direction of the impeller (200); the second blade (203) is inclined from the center of the impeller (200) to the outer side, and the inclination direction is the same as the rotation direction of the impeller (200); when the first blade (201) rotates, the water flow simultaneously moves radially and moves axially toward the second housing (104); when the second blade (203) rotates, the water flow enters the first housing (100).

4. The light-duty high-speed magnetic drive centrifugal pump according to claim 3, characterized in that: The impeller (200) is provided with a notch (204) on its side, and a guide slope (205) is provided on one side of the notch (204). When the impeller (200) rotates, the guide slope (205) generates thrust in the axial direction of the impeller (200) on the water flow. The impeller (200) is also provided with a water hole (202). The water hole (202) is arranged obliquely along the circumference of the impeller (200), so that when the impeller (200) rotates, the water flows through the water hole (202) from the side of the first blade (201) to the side of the second blade (203).

5. The light-duty high-speed magnetic drive centrifugal pump according to claim 4, characterized in that: A water outlet (105) is installed on the second shell (104), and an exhaust mechanism is also provided on the second shell (104). The exhaust mechanism includes a mounting frame (300), and a plunger (301) is rotatably mounted on the mounting frame (300). The bottom of the plunger (301) movably passes through the second shell (104) and extends to the outside. The bottom of the plunger (301) is adapted to the shape of the inner wall of the second shell (104), and a groove (302) is provided on the side of the plunger (301).

6. The light-duty high-speed magnetic drive centrifugal pump according to claim 5, characterized in that: A water inlet (106) is installed inside the second shell (104), an inducer (107) is provided inside the water inlet (106), and the inducer (107) is fixedly connected to the impeller (200) via a rotating shaft. A water inlet pipe (400) is provided at one end of the water inlet (106), and a water suction pipe (401) is installed at one end of the water inlet pipe (400). An adjustment mechanism is provided on the outside of the water suction pipe (401), and the adjustment mechanism is used to adjust the cross-sectional area of ​​the water suction pipe (401).

7. The light-duty high-speed magnetic drive centrifugal pump according to claim 6, characterized in that: The regulating mechanism comprises an extrusion rod (411) fixedly mounted on the water suction pipe (401), and a fixed plate (410) fixedly mounted on one side of the extrusion rod (411), an insertion rod (409) mounted on the fixed plate (410), a movable ring (408) movably sleeved on the insertion rod (409), a sleeve ring (407) rotatably mounted on the movable ring (408), a rotating rod (406) movably sleeved on the sleeve ring (407), and when the rotating rod (406) rotates, it drives the extrusion rod (411) to move so as to squeeze the water suction pipe (401).

8. The light-duty high-speed magnetic drive centrifugal pump according to claim 7, characterized in that: The regulating mechanism further comprises a mounting plate (402) fixedly mounted on the upper and lower sides of the water suction pipe (401); the end of the rotating rod (406) is rotatably connected to the mounting plate (402); a driving assembly is provided on the mounting plate (402) located at the top; the driving assembly comprises a cylinder (403) fixedly mounted on the mounting plate (402); and a first pull rod (404) is fixedly and rotatably mounted on the output end of the cylinder (403); a second pull rod (405) is rotatably mounted on one end of the first pull rod (404); and one end of the second pull rod (405) is fixedly connected to one end of the rotating rod (406).

9. The lightweight, high-speed magnetic drive centrifugal pump according to claim 8, characterized in that: A filtering mechanism is provided between the water inlet (106) and the water inlet pipe (400), the filtering mechanism comprising a filter tube (600), and the two ends of the filter tube (600) are respectively connected to the water inlet (106) and the water inlet pipe (400), a filter core (601) is movably connected inside the filter tube (600), a filter screen (602) is installed inside the filter core (601), an adjusting rod (603) is rotatably connected to the filter tube (600), and the adjusting rod (603) is fixedly connected to the filter core (601).

10. The light-duty, high-speed magnetic drive centrifugal pump according to claim 9, characterized in that: A magnetic coupler is provided at one end of the first housing (100), the magnetic coupler comprising a first rotor (502), a second rotor (503) and a mounting shell (501), the second rotor (503) being fixedly connected to the impeller (200), a power source (500) being installed at one end of the mounting shell (501), and an output end of the power source (500) being fixedly connected to the first rotor (502).

Images