A canned motor for a canned pump and a canned pump

Abstract

The application relates to the technical field of motors, and discloses a motor for a canned pump and the canned pump, wherein the motor for the canned pump comprises a stator ring arranged in the inside of the canned pump, a rotor arranged between the inner walls of the stator ring, the rotor is arranged to be able to rotate around the central axis of the stator ring, the outer surface of the rotor is sleeved with a rotor shielding sleeve, and the outer surface of the protective sleeve is provided with a plurality of flow channels. According to the application, the openings are respectively sealed by the sliding blocks, the flow channels can be blocked through the arrangement, the cooling medium cannot flow again because one end is blocked, the flow channels are filled, air cannot enter the inside of the flow channels when the cooling medium is replaced, air stagnation in the inside of the flow channels is avoided, the cooling medium cannot normally flow, the subsequent heat dissipation of the pump body is ensured, and the operation safety of the new energy vehicle is ensured.

Description

Technical Field

[0001] This invention relates to the field of motor technology, and in particular to a motor for a canned motor and a canned motor. Background Technology

[0002] In the era of traditional gasoline-powered vehicles, automotive thermal management systems primarily revolved around engine cooling and cabin air conditioning, with the circulation power mostly provided by mechanical water pumps driven by the engine crankshaft via belts. These pumps suffered from inherent drawbacks such as leakage, noise, dependence on engine speed, and uncontrollable power consumption. With the rapid transformation of the global automotive industry towards electrification and intelligentization, the architecture of new energy vehicles (including pure electric vehicles, hybrid electric vehicles, and fuel cell vehicles) has undergone fundamental changes. Their thermal management systems face more complex, precise, and demanding requirements. It is precisely these new challenges in the thermal management of new energy vehicles that have propelled canned pump technology, originally belonging to the industrial sector, to the center stage of the automotive industry, accelerating its evolution towards automotive-grade standards.

[0003] In existing canned motor pumps, the internal self-cooling cycle and the main cycle are completely connected and share the same cooling medium. After a period of use, the cooling medium needs to be replaced periodically to ensure its cooling effect. During this process, maintenance personnel need to drain the old cooling medium. However, due to negligence, outside air can easily enter the main cycle of the canned motor pump during maintenance and coolant replacement. Because the internal self-cooling cycle and the main cycle are completely connected in terms of the medium, air can easily intrude into the internal self-cooling cycle. This narrow circulation channel is prone to air binding, causing air stagnation, preventing normal coolant flow, and rendering the self-cooling function ineffective. This will lead to a sharp increase in pump body temperature, causing overheating and damage to the canned motor pump, thereby threatening the thermal and operational safety of new energy vehicles. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a motor for a canned pump and a canned pump.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A motor for a canned motor pump, disposed inside the canned motor pump, includes: Stator rings, which are located inside the canned motor pump; The rotor is disposed between the inner walls of the stator rings. The rotor is configured to rotate about the central axis of the stator rings. The outer surface of the rotor is covered with a rotor shielding sleeve, and the outer surface of the shielding sleeve has multiple flow channels. A disc is disposed at one end of the rotor. The disc is configured to rotate with the rotor. Several mounting grooves are formed on the outer surface of one side of the disc. Multiple openings are formed through the inner walls of the mounting grooves and are connected to the flow channel. Several sliders are disposed between the inner walls of several mounting slots, and the sliders are configured to slide along the diameter of the disk when the disk rotates.

[0006] As a further aspect of the present invention, the interior of the plurality of sliders is provided with guide holes, which are connected to the flow channel through openings. A gap is provided between the plurality of sliders and the plurality of mounting slots. By providing gaps, the sliders have sliding clearance and can slide along the diameter direction of the disk. When the disk rotates, due to the influence of centrifugal force, the sliders radiate along the diameter direction of the disk away from the center of the disk. The interior of the plurality of sliders is provided with guide holes, which are connected to the flow channel through openings. When the sliders radiate along the diameter direction of the disk away from the center of the disk, the guide holes will connect with the openings, thereby allowing the cooling medium to flow from the openings into the interior of the flow channel.

[0007] As a further embodiment of the present invention, a square rod is fixedly installed on the outer surface of one side of each of the plurality of sliders, and a plurality of grooves are formed on the outer surface of one side of the disk. A square hole is formed through the inner wall of the plurality of mounting grooves. A baffle is fixedly installed at one end of the square rod through the square hole. The square rod is slidably installed with the inner wall of the square hole. Through the cooperation of the square rod and the square hole, the slider moves only along the diameter direction of the disk.

[0008] As a further embodiment of the present invention, a second spring is sleeved on the outer surface of the square rod near the baffle. One end of the second spring abuts against the outer surface of the baffle, and the other end of the second spring abuts against the inner wall of the sink. Through the elastic force of the second spring and the cooperation of the baffle, the slider can stop at the initial position and seal the opening.

[0009] As a further embodiment of the present invention, a rotating plate is provided between the inner walls of the guide hole. One end of the rotating plate is rotatably mounted between the inner walls of the guide hole via a guide post. One end of the guide post penetrates the inner wall of the settling tank. A guide groove is formed on the outer circumferential surface of the guide post. A column is fixedly connected to the inner wall of the settling tank. One end of the column is slidably connected to the inner wall of the guide groove. The guide groove is spirally arranged. Through the cooperation of the column and the guide groove, the guide post is rotated by an angle, thereby causing the rotating plate to rotate by an angle, so that the inlet of the guide hole is opened.

[0010] As a further embodiment of the present invention, a sliding groove is formed on the outer surface of the plurality of sliders near the mounting groove, and a weight is provided between the inner walls of the sliding groove. The weight is slidably installed with the inner wall of the sliding groove. A positioning post is provided on the outer surface of one end of the weight, and one end of the positioning post penetrates the outer surface of the slider.

[0011] As a further embodiment of the present invention, the plurality of mounting slots are provided with positioning holes on the inner wall near the positioning post. One end of the positioning post is inserted into the positioning hole. A first spring is fixedly connected to the outer surface of the other end of the weight. The other end of the first spring is fixedly connected to the inner wall of the slide groove. Through the elastic force of the first spring, when the slider is reset, the positioning post is re-inserted into the positioning hole, thereby limiting the slider again.

[0012] As a further embodiment of the present invention, a sealing plate is fixedly provided between the inner walls of the settling tank. The sealing plate completely covers the settling tank and seals it, making the surface of the disc flat and reducing resistance.

[0013] As a further embodiment of the present invention, the outer shape of the rotating plate is matched with the inner wall of the guide hole, and the guide hole is closed by the rotating plate to further seal the flow channel.

[0014] As a further aspect of the present invention, a shielded pump includes the aforementioned motor for the shielded pump.

[0015] This invention uses several sliders to seal the opening, which blocks the flow channel. Because one end is blocked, the cooling medium will no longer flow and will fill the flow channel. This prevents air from entering the flow channel when the cooling medium is replaced, and also prevents air binding inside the flow channel, which would cause air to stagnate and the cooling medium to be unable to flow normally. This ensures that the pump body can dissipate heat normally and guarantees the safe operation of the new energy vehicle. When the disc is not rotating, the positioning pin and the positioning hole work together to allow the positioning pin to re-insert into the positioning hole. The elastic force of the first spring causes the positioning pin to re-insert into the positioning hole when the slider is reset, thus limiting the slider again. This setting ensures that the slider is limited when the rotor is not rotating, and is only limited when the rotor is rotating normally, thereby preventing the slider from moving randomly due to vibration. When the rotor speed is low, the centrifugal force of the slider is small, which results in a small cross-sectional area connecting the flow channel and the opening. At this time, less cooling medium flows into the flow channel, avoiding excessive heat dissipation of the rotor. This allows more cooling medium to be used to dissipate heat in other parts of the new energy vehicle. Also, because the slider moves a small distance, the guide post moves a small distance relative to the column, resulting in a small rotation angle of the guide post. This also reduces the opening of the guide hole inlet, thereby reducing the flow rate of cooling medium entering the guide hole and matching the heat dissipation of the rotor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a motor for a canned pump proposed in this invention; Figure 2This is a schematic diagram of the rotor of a motor for a canned pump proposed in this invention; Figure 3 This is a schematic diagram of a partial rotor structure of a motor for a canned pump proposed in this invention; Figure 4 This is a front view schematic diagram of a disc-shaped motor for a shielded pump proposed in this invention; Figure 5 This is a rear view schematic diagram of a disc-shaped motor for a shielded pump proposed in this invention; Figure 6 This is a schematic diagram of the mounting slot for a motor used in a shielded pump according to the present invention; Figure 7 for Figure 6 Enlarged view of a portion of point A in the middle; Figure 8 This is a partial schematic diagram of a disc-shaped motor for a canned pump proposed in this invention; Figure 9 This is a schematic diagram of the slider of a motor for a canned pump proposed in this invention; Figure 10 This is a schematic diagram of the weight of a motor for a canned pump proposed in this invention; Figure 11 This is a schematic diagram of the rotating plate of a motor for a shielded pump proposed in this invention.

[0017] In the picture: 100, Stator ring; 200, Rotor; 210, Flow channel; 300, Disc; 310, Opening; 320, Mounting slot; 330, Countersink; 340, Square hole; 350, Positioning hole; 400, slider; 410, guide hole; 420, slide groove; 500, rotating plate; 600, sealing plate; 700, guide post; 710, guide groove; 800, weight; 810, positioning post; 900, first spring; 1000, square rod; 1010, baffle; 1100, second spring; 1200, column; 1300, gap. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0019] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] To prevent air from entering the internal self-cooling circulation pipes and causing air trapping during coolant replacement, which would prevent air from accumulating and hinder coolant flow, such as... Figure 1 and Figure 2 As shown, this invention proposes a motor for a canned motor pump, which is disposed inside the canned motor pump. The motor includes a stator ring 100 and a rotor 200. Specifically, the stator ring 100 is disposed inside the canned motor pump and is fixedly connected to the outer peripheral surface of the stator shielding sleeve. The rotor 200 is disposed between the inner walls of the stator ring 100 and is coaxially arranged with the stator ring 100. A rotor shielding sleeve is fitted on the outer surface of the rotor 200. The fully enclosed cavity formed by the stator shielding sleeve and the rotor shielding sleeve allows the cooling medium to flow inside the fully enclosed cavity, avoiding interference with the normal operation of the rotor 200 and the stator ring 100. In actual use, the rotor 200 and the pump impeller are fixed on the same main shaft, and the rotor 200 is configured to rotate about the central axis of the stator ring 100 as the rotation center, thereby driving the impeller to rotate, enabling the canned motor pump to deliver the cooling medium normally. In order to dissipate heat from the rotor 200, the outer surface of the rotor shielding sleeve is provided with multiple flow channels 210. When the rotor 200 rotates, it will drive the flow channels 210 on the outer surface of the shielding sleeve to rotate together. At this time, the cooling medium will enter from one end of the flow channel 210 and then flow out from the other end, thereby taking away the heat of the rotor 200. In this embodiment, in order to allow the cooling medium to flow smoothly, the two ends of the flow channel 210 are inclined at an angle to the end face of the rotor 200. When the rotor 200 rotates, the cooling medium can enter from the inlet of the inclined flow channel 210.

[0022] In this embodiment, when changing the cooling medium, in order to seal the inlet of the flow channel 210 and prevent air from entering, such as... Figure 3 , Figure 4 and Figure 5 As shown, the motor for the shielded pump also includes a disc 300 and several sliders 400. It should be noted that the diameter of the disc 300 is the same as the diameter of the rotor shield sleeve fitted over the rotor 200, thereby preventing the cooling medium from leaking into the flow channel 210. Specifically, the disc 300 is located at one end of the rotor 200 and is fixed to the main shaft together with the rotor 200. The disc 300 is configured to rotate with the rotor 200. In actual installation, the disc 300 blocks the inlet end of the flow channel 210. To allow the cooling medium to flow normally, multiple openings 310 are formed through the inner walls of the several mounting slots 320. These openings 310 are connected to the flow channel 210, allowing the cooling medium to enter the interior of the flow channel 210 through the openings 310, thus enabling normal heat dissipation. To allow the openings 310 to be opened and closed, as shown... Figure 6 and Figure 7 As shown, a plurality of mounting grooves 320 are formed on the outer surface of one side of the disc 300. A plurality of sliders 400 are disposed between the inner walls of the mounting grooves 320. The openings 310 are sealed by the sliders 400. This arrangement blocks the flow channel 210. Because one end is blocked, the cooling medium will no longer flow, and the flow channel 210 will be filled. This prevents air from entering the interior of the flow channel 210 when the cooling medium is replaced, and also prevents air binding inside the flow channel 210, which would cause air stagnation and prevent the cooling medium from flowing normally. This ensures that the pump body can dissipate heat normally and guarantees the safe operation of the new energy vehicle. When it is necessary to open the opening 310, the sliders 400 are configured to slide along the diameter of the disc 300 when the disc 300 rotates. To allow for sliding clearance of the sliders 400, such as... Figure 4 As shown, a gap 1300 is provided between the plurality of sliders 400 and the plurality of mounting slots 320. When the disk 300 rotates, due to the influence of centrifugal force, the sliders 400 radiate outward from the center of the disk 300 along the diameter direction of the disk 300. Furthermore, as... Figure 8 and Figure 9 As shown, each of the plurality of sliders 400 has a through-hole 410. The through-hole 410 is connected to the flow channel 210 through an opening 310. When the slider 400 moves radially away from the center of the disk 300 along the diameter direction of the disk 300, the through-hole 410 connects with the opening 310, allowing the cooling medium to flow from the opening 310 into the interior of the flow channel 210. It should be noted that in this embodiment, to ensure smooth flow of the cooling medium, as... Figure 8As shown, the guide hole 410 is also set along the inclined direction, that is, the guide hole 410 and the end face of the disk 300 have an angle, and its inclined direction is the same as the inclined angle of the two ends of the flow channel 210.

[0023] In this embodiment, in order to limit the installation and movement direction of the slider 400, such as Figure 8 and Figure 9 As shown, a square rod 1000 is fixedly installed on the outer surface of one side of each of the plurality of sliders 400. Multiple recesses 330 are formed on the outer surface of one side of the disc 300. Square holes 340 are formed through the inner walls of the plurality of mounting grooves 320. A baffle 1010 is fixedly installed at one end of each square rod 1000 through the square hole 340. The square rod 1000 is slidably installed against the inner wall of the square hole 340. Through the cooperation of the square rod 1000 and the square hole 340, the slider 400 moves only along the diameter of the disc 300. When the disc 300 is not rotating, the slider 400 can be reset to its initial position, that is, the opening 310 is sealed by the slider 400. The outer surface of the square rod 1000 near the baffle 1010 is fitted with a second spring 1100. One end of the second spring 1100 abuts against the outer surface of the baffle 1010, and the other end of the second spring 1100 abuts against the inner wall of the groove 330. Through the elastic force of the second spring 1100 and the cooperation of the baffle 1010, the slider 400 can stop at the initial position and seal the opening 310.

[0024] Because canned motor pumps are used in new energy vehicles, operators will use mechanical equipment when changing the coolant. To prevent vibration of the canned motor pump during the use of mechanical equipment, and to avoid movement of the slider 400 due to vibration, as follows... Figure 8 and Figure 10As shown, the outer surface of the plurality of sliders 400 near the mounting groove 320 is provided with a groove 420. A weight 800 is disposed between the inner walls of the groove 420. The weight 800 is slidably mounted to the inner wall of the groove 420. A positioning post 810 is provided on the outer surface of one end of the weight 800. One end of the positioning post 810 is disposed through the outer surface of the slider 400. A positioning hole 350 is provided on the inner wall of the plurality of mounting grooves 320 near the positioning post 810. One end of the positioning post 810 is inserted into the positioning hole 350. A first spring 900 is fixedly connected to the outer surface of the other end of the weight 800. The other end of the first spring 900 is fixedly connected to the inner wall of the groove 420. It should be noted that the weight 800 and the two side walls of the groove 420 are in sliding contact, and there is a gap between the end of the weight 800 and the end of the groove 420. When the disc 300 rotates, because the weight 800 is mounted on the slider 400... Since the rotor 300 starts rotating, due to inertia, the weight 800 will remain at its initial position. Therefore, the weight 800 will move relative to the slider 400 along the inner wall of the groove 420, causing the weight 800 to drive the positioning pin 810 out of the positioning hole 350. At this time, under centrifugal force, the slider 400 radiates outwards along the diameter of the rotor 300 away from the center of the rotor 300. When the rotor 300 stops rotating, in order for the positioning pin 810 to re-insert into the positioning hole 350, the elastic force of the first spring 900 causes the positioning pin 810 to re-insert into the positioning hole 350 when the slider 400 resets, thus re-limiting the slider 400. This setting ensures that the slider 400 is limited when the rotor 200 is not rotating, and is only limited when the rotor 200 is rotating normally, thus preventing the slider 400 from moving arbitrarily due to vibration.

[0025] In this embodiment, to further ensure the sealing of the flow channel 210, such as Figure 8 , Figure 9 and Figure 11As shown, a rotating plate 500 is provided between the inner walls of the guide hole 410. One end of the rotating plate 500 is rotatably mounted between the inner walls of the guide hole 410 via a guide post 700. When the rotating plate 500 rotates along the guide post 700, the inlet of the guide hole 410 is opened. At this time, the cooling medium can enter the flow channel 210 from the inlet of the guide hole 410. Because the cooling medium needs to enter the flow channel 210 when the rotor 200 rotates, one end of the guide post 700 penetrates the inner wall of the sink 330. The guide post 700 has a guide groove 710 on the outer circumferential surface of the sink 330. A column 1200 is fixedly connected to the inner wall of the sink 330. One end of the column 1200 is slidably connected to the inner wall of the guide groove 710. When the rotor 200 rotates, the slider 4... The rotor 200 is subjected to centrifugal force and radiates outward from the center of the disk 300 along its diameter. At this time, the slider 400 drives the rotating plate 500 and the guide post 700 to radiate outward from the center of the disk 300 along its diameter. The guide post 700 will move relative to the column 1200. Because the guide groove 710 is spirally arranged, the guide post 700 is rotated by an angle through the cooperation of the column 1200 and the guide groove 710, thereby driving the rotating plate 500 to rotate by an angle, so that the inlet of the guide hole 410 is opened. When the rotor 200 is not rotating, the rotating plate 500 is closed. Since the shape of the rotating plate 500 matches the inner wall of the guide hole 410, the rotating plate 500 closes the guide hole 410, further sealing the flow channel 210.

[0026] In this embodiment, it should be noted that because the rotational speed of the rotor 200 changes during operation, the magnitude of the centrifugal force on the slider 400 also changes. When the rotor 200's rotational speed is low, the centrifugal force on the slider 400 is small, and conversely, when the rotor 200's rotational speed is high, the centrifugal force on the slider 400 is large. Because the rotor 200's rotational speed is low, the rotor 200 generates less heat. Because the centrifugal force on the slider 400 is small, the distance it radiates away from the center of the disk 300 along the diameter direction is small, thereby making the flow channel 2... The cross-sectional area connecting 10 and opening 310 is also small. At this time, less cooling medium flows into the interior of flow channel 210, avoiding excessive heat dissipation of rotor 200. This allows more cooling medium to be used to dissipate heat in other parts of the new energy vehicle. Also, because the sliding distance of slider 400 is small, the distance that guide post 700 moves relative to column 1200 is also small. This results in guide post 700 rotating at a very small angle, which in turn makes the opening of the inlet of guide hole 410 smaller. This reduces the flow rate of cooling medium entering the interior of guide hole 410, thus matching the heat dissipation of rotor 200.

[0027] Because the rotor 200 rotates at a low speed, by reducing the rotation angle of the rotating plate 500, the mutual resistance between the rotating plate 500 and the cooling medium during its movement will be reduced, thereby reducing the resistance of the rotor 200.

[0028] In this embodiment, a sealing plate 600 is fixedly installed between the inner walls of the settling trough 330. The sealing plate 600 completely covers the settling trough 330 and seals it, making the surface of the disc 300 flat and reducing resistance.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A motor for a canned motor pump, which is disposed inside the canned motor pump, characterized in that, The motor for the shielded pump includes: Stator ring (100), which is located inside the shielded pump; The rotor (200) is disposed between the inner walls of the stator ring (100). The rotor (200) is configured to rotate about the central axis of the stator ring (100). The outer surface of the rotor (200) is covered with a rotor shielding sleeve, and the outer surface of the shielding sleeve is provided with multiple flow channels (210). A disc (300) is disposed at one end of a rotor (200). The disc (300) is configured to rotate with the rotor (200). A plurality of mounting grooves (320) are provided on the outer surface of one side of the disc (300). A plurality of openings (310) are provided through the inner wall of the plurality of mounting grooves (320). The openings (310) are connected to the flow channel (210). A plurality of sliders (400) are disposed between the inner walls of a plurality of mounting slots (320), and the plurality of sliders (400) are configured to slide along the diameter direction of the disk (300) when the disk (300) rotates.

2. The motor for the canned pump according to claim 1, characterized in that, The interior of each of the plurality of sliders (400) is provided with a guide hole (410), the guide hole (410) is connected to the flow channel (210) through an opening (310), and a gap (1300) is provided between the plurality of sliders (400) and the plurality of mounting slots (320).

3. The motor for the canned pump according to claim 2, characterized in that, A square rod (1000) is fixedly installed on the outer surface of one side of each of the several sliders (400). A plurality of grooves (330) are opened on the outer surface of one side of the disc (300). A square hole (340) is opened through the inner wall of the several mounting grooves (320). A baffle (1010) is fixedly installed at one end of the square rod (1000) through the square hole (340). The square rod (1000) is slidably installed on the inner wall of the square hole (340).

4. The motor for the canned pump according to claim 3, characterized in that, A second spring (1100) is fitted on the outer surface of the square rod (1000) near the baffle (1010). One end of the second spring (1100) abuts against the outer surface of the baffle (1010), and the other end of the second spring (1100) abuts against the inner wall of the sink (330).

5. The motor for the canned pump according to claim 4, characterized in that, A rotating plate (500) is provided between the inner walls of the guide hole (410). One end of the rotating plate (500) is rotatably installed between the inner walls of the guide hole (410) via a guide post (700). One end of the guide post (700) penetrates the inner wall of the sinking groove (330). A guide groove (710) is provided on the outer circumferential surface of the guide post (700) located on the sinking groove (330). A column (1200) is fixedly connected to the inner wall of the sinking groove (330). One end of the column (1200) is slidably connected to the inner wall of the guide groove (710). The guide groove (710) is spirally arranged.

6. The motor for the canned pump according to claim 3, characterized in that, The outer surface of the plurality of sliders (400) near the mounting groove (320) is provided with a groove (420). A weight (800) is provided between the inner walls of the groove (420). The weight (800) is slidably installed with the inner wall of the groove (420). A positioning post (810) is provided on the outer surface of one end of the weight (800). One end of the positioning post (810) is provided through the outer surface of the slider (400).

7. The motor for a canned pump according to claim 6, characterized in that, The mounting slots (320) have positioning holes (350) on the inner wall near the positioning post (810). One end of the positioning post (810) is inserted into the positioning hole (350). A first spring (900) is fixedly connected to the outer surface of the other end of the weight (800). The other end of the first spring (900) is fixedly connected to the inner wall of the slide (420).

8. The motor for the canned pump according to claim 3, characterized in that, A sealing plate (600) is fixedly installed between the inner walls of the settling tank (330), and the sealing plate (600) completely covers the settling tank (330).

9. The motor for a canned pump according to claim 5, characterized in that, The outer shape of the rotating plate (500) is matched with the inner wall of the guide hole (410).

10. A canned pump, characterized in that, The motor for the canned pump includes any one of claims 1-9.

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