A quick assembly mechanism for a permanent magnet submersible pump structure

Abstract

This invention discloses a rapid assembly mechanism for a permanent magnet submersible pump, including a worktable, a pump body limited on the worktable, a work frame mounted on the worktable, and an assembly mechanism on the work frame. The assembly mechanism includes: a shaft, which is longitudinally cylindrical, with a stationary ring component and a rotating ring component internally fitted, and an airflow pipe at the upper end for generating airflow inside the shaft; and a support portion, which has both longitudinal and transverse states and is located on the side of the shaft. This invention uses thin plates one and two to form a gas channel, guiding the airflow around the stationary and rotating ring components for non-contact purging to remove surface contaminants. Furthermore, both the stationary and rotating ring components are limited to ensure their axes coincide, directly improving assembly accuracy and speed. The longitudinal and transverse states of the dividing plate allow for direct installation of the stationary and rotating ring components through the extension and retraction of the shaft, replacing traditional manual adjustment.

Description

Technical Field

[0001] This invention relates to the field of water pump installation technology, specifically to a rapid assembly mechanism for a permanent magnet submersible pump. Background Technology

[0002] In the installation of permanent magnet submersible pumps, the installation of the mechanical seal is an extremely critical step. Since the pump operates completely submerged in liquid, if the mechanical seal fails, liquid will instantly rush into the motor cavity. Water ingress will inevitably cause short circuits in the windings, burn out the controller, and render the entire pump unusable, resulting in losses far greater than with ordinary pumps. The quality of installation directly affects the pump's sealing performance and service life. The mechanical seal consists of a rotating ring and a stationary ring. During the installation of the rotating and stationary rings, absolute cleanliness must be maintained; all components, installation tools, and the workbench must be spotless. Even the smallest particle can scratch the sealing surface, leading to leakage.

[0003] Currently, when installing the rotating and stationary rings, the sealing cavity of the submersible pump's motor gland is first cleaned with an air gun. Then, the rotating and stationary rings are also cleaned, and the stationary ring is coated with lubricating oil. It is then placed vertically into the gland sealing cavity to avoid tilting. The outer ring of the gland is gently tapped with a nylon rod until it fits against the bottom positioning surface. The rotating ring assembly is then coated with lubricating oil and installed. Under the action of spring force, the stationary ring and the rotating ring are gently fitted together to complete the assembly.

[0004] During the installation of the stationary and rotating rings, it is essential to ensure that they are spotless. However, the installation process requires manual contact with the stationary and rotating rings. Even when wearing rubber gloves, the gloves will still pick up some dirt from contact with other objects. This dirt can easily come into contact with the stationary and rotating rings, affecting the cleanliness. In addition, the stationary and rotating rings will also come into contact with lubricating oil during the installation process. When the lubricating oil adheres to the gloves, it has a certain stickiness, which makes it even easier for dirt to stick to the gloves, further affecting the installation of the stationary and rotating rings. Summary of the Invention

[0005] The purpose of this invention is to provide a quick assembly mechanism for a permanent magnet submersible pump structure to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a rapid assembly mechanism for a permanent magnet submersible pump structure, comprising a worktable, a pump body limited on the worktable, a work frame mounted on the worktable, and an assembly mechanism on the work frame, the assembly mechanism comprising:

[0007] The shaft is longitudinally cylindrical and has a stationary ring component and a moving ring component inside. The upper end has an airflow pipe for generating airflow inside the shaft.

[0008] The support part has two states, longitudinal and transverse. It is located on the side of the shaft part and separates the stationary ring part and the moving ring part. In the transverse state, it pushes the stationary ring part and in the longitudinal state, it separates from the stationary ring part and the moving ring part.

[0009] Furthermore, the shaft portion has a first channel and a second channel inside, which are connected end to end and extend through the shaft portion to both ends respectively. The diameter of the second channel is larger than that of the first channel, and the second channel is used to limit the stationary ring component and the moving ring component.

[0010] Furthermore, the inner wall of the second channel has a longitudinally extending thin plate one, which is pressed against the inner stationary ring component and the rotating ring component. The inner wall of the upper end of the second channel has a thin plate two, which contacts the upper end of the rotating ring component and forms a channel for gas passage. The thin plate one and the thin plate two are covered with a rubber layer.

[0011] Furthermore, each side of the shaft is provided with a cavity one, and the support part includes a dividing plate with one end set as an arc, which is rotatably installed in the cavity one. When the dividing plate is longitudinal, both sides of it are located inside the cavity one. The outer side of the shaft is also provided with a cavity two perpendicular to the axis of the shaft. A partition plate is clamped from the outside to the inside of the cavity two. The lower end of the partition plate contacts the arc surface of the dividing plate, and when the dividing plate is transverse, its side abuts against the partition plate. The dividing plate is clamped between the stationary ring component and the moving ring component.

[0012] Furthermore, the outer side of the dividing plate is covered with a rubber layer to prevent damage to the stationary ring component and the rotating ring component.

[0013] Furthermore, the stationary ring component includes a stationary ring body, and the rotating ring component includes a rotating ring body, a spring, and a retaining ring, with the spring located between the rotating ring body and the retaining ring.

[0014] Furthermore, the upper end of the shaft has an auxiliary frame for expanding the retaining ring. The shaft has an arc-shaped groove running from top to bottom, and two auxiliary shafts are inserted into the arc-shaped groove. The ends of the auxiliary shafts are inserted into the holes of the retaining ring.

[0015] Furthermore, the outer side of the auxiliary shaft has an integrally formed expansion layer, the lower end of which abuts against the retaining spring. The cross-section of the expansion layer is arc-shaped and matches the arc-shaped groove.

[0016] Furthermore, the upper end of the auxiliary shaft extends at an angle, and the auxiliary frame is inverted triangular in shape, with inclined grooves on both sides that cooperate with the inclined extension portion of the auxiliary shaft.

[0017] Furthermore, the lower end face of the stationary ring body is not higher than the lower end face of the shaft portion.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0019] 1. Gas channels formed by thin plates one and two guide the airflow to flow around the stationary ring component and the rotating ring component for non-contact purging to remove surface stains. Secondly, both the stationary ring component and the rotating ring component are limited to ensure that their axes coincide, directly improving assembly accuracy and speed. The split plate has two states, longitudinal and transverse, and the installation of the stationary ring component and the rotating ring component is directly realized through the extension and retraction of the shaft, replacing the traditional manual adjustment.

[0020] 2. The dividing plate pushes the stationary ring component to squeeze the pre-lubricated oil, so that the oil automatically seeps into the sealing surface, avoiding pollution during the oil immersion process.

[0021] 3. The auxiliary shaft and the outer expansion layer cooperate with the auxiliary frame inclined groove to control the expansion and reset of the retaining spring. Due to the shape of the arc groove, its axis coincides with the axis of the shaft. The retaining spring does not contact the output end of the water pump body, thus avoiding scratch damage.

[0022] 4. The longitudinal and lateral movement of the dividing plate assembles the stationary ring component and the dynamic ring component, avoiding damage to the sealing surface caused by accidental human contact. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the assembly mechanism of the present invention;

[0026] Figure 3 This is a schematic diagram of the half-section structure of the shaft portion of the present invention;

[0027] Figure 4 This is an exploded structural diagram of the shaft portion, stationary ring component, and rotating ring component of the present invention;

[0028] Figure 5 This is a schematic diagram of the half-section planar structure of the assembly mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the shaft structure of the present invention;

[0030] Figure 7 This is the present invention. Figure 6 A schematic diagram of the partially enlarged structure of the middle part;

[0031] Figure 8 This is a schematic diagram of the circlip, auxiliary frame, and auxiliary shaft of the present invention separated from the shaft.

[0032] Figure 9 This is a schematic diagram of the assembly mechanism and the water pump body of the present invention.

[0033] In the diagram: 1. Workbench; 2. Water pump body; 3. Work frame; 4. Assembly mechanism; 41. Shaft; 411. Channel 1; 412. Channel 2; 413. Thin plate 1; 414. Thin plate 2; 42. Airflow pipe; 43. Support; 431. Cavity 1; 432. Cavity 2; 433. Partition; 434. Dividing plate; 44. Stationary ring component; 441. Stationary ring body; 45. Moving ring component; 451. Moving ring body; 452. Spring; 453. Snap ring; 46. Auxiliary frame; 461. Inclined groove; 47. Auxiliary shaft; 471. Outer expansion layer; 472. Arc groove. Detailed Implementation

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0035] Please see Figures 1-9 This invention provides a technical solution: Submersible pumps operate completely submerged in liquid, making the mechanical seal extremely important. Currently, the assembly process involves manually installing the stationary and rotating rings. This includes cleaning the gland sealing cavity on the pump body 2 with an air gun, cleaning the stationary and rotating rings, and then immersing them in lubricating oil to coat them before installation. This process requires constant hand contact with the stationary and rotating rings, and may even necessitate manually changing their positions. Repeated handling of the cleaned stationary and rotating rings can easily cause dirt to re-adhere to them, affecting their quality. Therefore, this invention proposes a rapid assembly mechanism for a permanent magnet submersible pump structure, such as... Figures 1-3 As shown, the system includes a workbench 1, a water pump body 2 limited on the workbench 1, a work frame 3 mounted on the workbench 1, and an assembly mechanism 4 on the work frame 3. The assembly mechanism 4 includes:

[0036] The shaft portion 41 is longitudinally cylindrical, and a stationary ring component 44 and a moving ring component 45 are fitted inside. The upper end has an airflow pipe 42 for generating airflow inside the shaft portion 41.

[0037] The support part 43 has two states, longitudinal and transverse, and is located on the side of the shaft part 41. It separates the stationary ring part 44 and the moving ring part 45. In the transverse state, it pushes the stationary ring part 44, and in the longitudinal state, it separates from the stationary ring part 44 and the moving ring part 45.

[0038] Specifically, a vertically extendable work frame 3 is installed on the workbench 1. The work frame 3 has an assembly mechanism 4, which can extend and retract with the work frame 3 and can also move laterally to align the assembly mechanism 4 with the water pump body 2. The workbench 1 has a cylinder for limiting the water pump body 2. The assembly mechanism 4 includes a shaft 41 and a support 43. The shaft 41 has a stationary ring component 44 and a rotating ring component 45. The upper end has an airflow pipe 42, the outer end of which is connected to an air pump to generate airflow to the stationary ring component 44 and the rotating ring component 45 for cleaning. The support 43 is installed on the side of the shaft 41. Its function is to separate the stationary ring component 44 and the rotating ring component 45. It has two deformations: vertical and horizontal. When horizontal, it pushes the stationary ring component 44 downward to cooperate with the water pump body 2. When vertical, it moves upward to remove the shaft 41 so that the stationary ring component 44 and the rotating ring component 45 fit together.

[0039] like Figure 3 As shown, the shaft 41 has a first channel 411 and a second channel 412 inside. The first channel 411 and the second channel 412 are connected end to end and pass through the shaft 41 at both ends respectively. The diameter of the second channel 412 is larger than that of the first channel 411. The second channel 412 is used to limit the stationary ring component 44 and the moving ring component 45.

[0040] Specifically, channel 1 411 and channel 2 412 are used to pass through the shaft 41, making it cylindrical. The diameter of channel 2 412 is larger than that of channel 1 411, so that the upper end of the moving ring component 45 is blocked, achieving a limiting function. The connecting channel 1 411 and channel 2 412 have airflow from the airflow pipe 42 moving from top to bottom, cleaning the stationary ring component 44 and the moving ring component 45.

[0041] like Figure 4 As shown, the inner side wall of channel 2 412 has a longitudinally extending thin plate 413. The thin plate 413 is pressed against the inner stationary ring component 44 and the moving ring component 45. The inner wall of the upper end of channel 2 412 has a thin plate 414, which contacts the upper end of the moving ring component 45 and forms a channel for gas passage. The thin plate 413 and the thin plate 414 are covered with a rubber layer.

[0042] Specifically, the function of thin plate 413 and thin plate 414 is to create a gap between the stationary ring component 44 and the rotating ring component 45 and the channel 412, while also reducing the contact area of ​​the stationary ring component 44 and the rotating ring component 45, so as to allow the stationary ring component 44 and the rotating ring component 45 to be cleaned by the airflow as much as possible. The rubber layer prevents the stationary ring component 44 and the rotating ring component 45 from being restricted and damaged, and also achieves the function of deforming under force to fix the stationary ring component 44 and the rotating ring component 45.

[0043] like Figure 7As shown, the shaft portion 41 has openings 431 on both sides. The support portion 43 includes a dividing plate 434 with one end being arc-shaped, which is rotatably installed in the opening 431. When the dividing plate 434 is longitudinal, both sides are located inside the opening 431. The shaft portion 41 also has an opening 432 perpendicular to the axis of the shaft portion 41. A partition plate 433 is clamped in the opening 432 from the outside to the inside. The lower end of the partition plate 433 contacts the arc surface of the dividing plate 434. When the dividing plate 434 is transverse, its side abuts against the partition plate 433. The dividing plate 434 is clamped between the stationary ring component 44 and the moving ring component 45.

[0044] Specifically, the support part 43 includes a dividing plate 434, one end of which is arc-shaped and installed in the first cavity 431. The dividing plate 434 can rotate around the arc-shaped end. The outer side of the shaft part 41 also has a second cavity 432, and a partition 433 is installed inside. The partition 433 is used to block the dividing plate 434 so that it abuts against the partition 433 when it is horizontal, preventing it from rotating upward again. When the moving ring component 45 is installed, the dividing plate 434 is in a vertical state, and the moving ring component 45 can be directly installed from bottom to top in the second channel 412. Then the dividing plate 434 is horizontal, and the stationary ring component 44 is installed in the second channel 412, with its upper end abutting against the dividing plate 434.

[0045] like Figure 7 As shown, the outer side of the dividing plate 434 is covered with a rubber layer to prevent damage to the stationary ring component 44 and the moving ring component 45.

[0046] like Figure 5 As shown, the stationary ring component 44 includes a stationary ring body 441, and the rotating ring component 45 includes a rotating ring body 451, a spring 452, and a retaining ring 453, with the spring 452 located between the rotating ring body 451 and the retaining ring 453. Specifically, the stationary ring body 441, the rotating ring body 451, the spring 452, and the retaining ring 453 are all existing technologies.

[0047] like Figure 3 , Figure 4 , Figure 8 As shown, the upper end of the shaft 41 has an auxiliary frame 46 for expanding the snap ring 453. The shaft 41 has an arc-shaped groove 472 running through it from top to bottom. Two auxiliary shafts 47 are inserted into the arc-shaped groove 472, and the ends of the auxiliary shafts 47 are inserted into the holes of the snap ring 453.

[0048] Specifically, the auxiliary bracket 46 is used to push the auxiliary shaft 47 and make it expand outward. It should be noted that the auxiliary shaft 47 can be manually expanded outward to expand the retaining ring 453, and the auxiliary bracket 46 achieves a locking function to prevent the retaining ring 453 from resetting.

[0049] like Figure 8As shown, the outer side of the auxiliary shaft 47 has an integrally formed outer expansion layer 471, the lower end of which abuts against the snap ring 453. The cross section of the outer expansion layer 471 is arc-shaped and matches the arc-shaped groove 472.

[0050] Specifically, the outer expansion layer 471 cooperates with the arc-shaped groove 472 to limit the auxiliary shaft 47 and prevent tilting. It should be noted that the auxiliary shaft 47 can be limited not only by the auxiliary frame 46 but also by other methods to achieve expansion. It should also be noted that the retaining ring 453 cooperates with the auxiliary shaft 47 and is limited by the arc-shaped groove 472. The axis of the arc-shaped groove 472 coincides with the axis of the shaft portion 41, allowing the auxiliary shaft 47 to move along the arc-shaped groove 472 and the retaining ring 453 to expand. This prevents the retaining ring 453 from contacting the output end of the water pump body 2, thus avoiding scratches.

[0051] The upper end of the auxiliary shaft 47 extends at an angle, and the auxiliary frame 46 is inverted triangular in shape, with inclined grooves 461 on both sides that cooperate with the inclined extension of the auxiliary shaft 47.

[0052] Specifically, the auxiliary shaft 47 cooperates with the auxiliary frame 46, and the inclined groove 461 is engaged with the auxiliary shaft 47 to prevent the auxiliary shaft 47 from moving outward.

[0053] The lower end face of the stationary ring body 441 is not higher than the lower end face of the shaft part 41, so that the stationary ring body 441 fits against the inner wall of the lower end of the sealing cavity of the pump body 2.

[0054] The working principle of the present invention: The upper end of the water pump body 2 has a pressure cover sealing cavity, which needs to be installed with a stationary ring component 44 and a rotating ring component 45. First, the dividing plate 434 is in a vertical state. Then, the rotating ring component 45 is sleeved from the lower end of the shaft 41 into the channel 2 412. Next, the dividing plate 434 is rotated to a horizontal state, with its upper end abutting against the rotating ring component 45. Then, the stationary ring component 44 is sleeved from bottom to top into the channel 2 412, abutting against the lower end of the dividing plate 434. It should be noted that the outer side of the stationary ring component 44 is squeezed against the rubber layer on the thin plate 413, so that the stationary ring component 44 is limited.

[0055] Under the action of thin plate 413 and thin plate 414, a channel for gas to pass through is formed around the stationary ring component 44 and the rotating ring component 45. The outer end of the airflow pipe 42 is connected to the existing air pump. When there is gas, the gas moves from top to bottom around the stationary ring component 44 and the rotating ring component 45, blowing away the dirt on the stationary ring component 44 and the rotating ring component 45 to a certain extent. Furthermore, since the stationary ring component 44 and the rotating ring component 45 are both located on the axis within the channel 412 and their axes coincide, the stationary ring component 44 and the rotating ring component 45 can be directly assembled together during assembly, simplifying the steps.

[0056] There is a dividing plate 434 between the stationary ring component 44 and the rotating ring component 45. Under the action of airflow, the part of the stationary ring component 44 and the rotating ring component 45 that are squeezed against each other can also be cleaned to a certain extent, without the need for manual re-contact.

[0057] Next, a certain amount of lubricating oil is injected into the sealing cavity of the pump body 2. The shaft 41 is then fitted with the output end of the pump body 2. The stationary ring component 44 and the rotating ring component 45 are then fitted onto the output end of the pump body 2. The stationary ring component 44 is pushed downward by the dividing plate 434, which squeezes the lubricating oil and allows it to automatically enter the surfaces of the stationary ring component 44 and the rotating ring component 45 that need to be in contact. This eliminates the need to immerse the stationary ring component 44 and the rotating ring component 45 in the lubricating oil again, preventing additional dirt from adhering.

[0058] Based on the aforementioned engagement between the shaft 41 and the output end of the water pump body 2, the auxiliary bracket 46 on the shaft 41 can expand the auxiliary shaft 47, thereby expanding the retaining spring 453 so that it engages with the output end of the water pump body 2. This allows the moving ring component 45 to move along the output end of the water pump body 2 into the gland sealing cavity. Due to the action of the outer expansion layer 471, the retaining spring 453 is pushed downwards. With the shaft 41 stationary, the moving ring component 45 moves downwards, thus compressing the spring 452. Afterwards, when the shaft 41 is removed upwards... First, loosen the auxiliary frame 46, and the retaining ring 453 will be fixed to the output end of the water pump body 2. Then, the shaft 41 moves upward, causing the dividing plate 434 to move upward as well. This moves the moving ring body 451 upward to a certain extent and squeezes the spring 452. The dividing plate 434 gradually changes from a horizontal to a vertical state, and then separates from the stationary ring component 44 and the moving ring component 45. The stationary ring component 44 and the moving ring component 45 are squeezed against each other under the action of the spring 452, achieving non-contact cleaning. At the same time, lubricating oil is loaded and installed in a non-contact manner.

[0059] After installation, the unloaded assembly mechanism 4 is cleaned by airflow through the airflow pipe 42, so that the residual lubricating oil adhering to the assembly mechanism 4 is cleaned to a certain extent, so that the subsequent stationary ring component 44 and rotating ring component 45 are prevented from adhering with too much lubricating oil, which would make the stains difficult to remove.

[0060] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0061] Finally, it should be noted that the above descriptions are merely preferred embodiments 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rapid assembly mechanism for a permanent magnet submersible pump structure, comprising a workbench (1), a pump body (2) limited on the workbench (1), a work frame (3) mounted on the workbench (1), and an assembly mechanism (4) on the work frame (3), characterized in that, The assembly mechanism (4) includes: The shaft (41) is a longitudinal cylindrical shape, and a stationary ring component (44) and a moving ring component (45) are installed inside. The upper end has an airflow pipe (42) for generating airflow inside the shaft (41). The support part (43) has two states, longitudinal and transverse. It is located on the side of the shaft part (41) and separates the stationary ring part (44) and the moving ring part (45). In the transverse state, it pushes the stationary ring part (44) and in the longitudinal state, it separates from the stationary ring part (44) and the moving ring part (45). The shaft (41) has a channel 1 (411) and a channel 2 (412) inside. The channel 1 (411) and the channel 2 (412) are connected end to end and pass through the shaft (41) to both ends respectively. The diameter of the channel 2 (412) is larger than that of the channel 1 (411). The channel 2 (412) is used to limit the stationary ring component (44) and the moving ring component (45). Both sides of the shaft (41) are provided with cavity one (431). The support part (43) includes a dividing plate (434) with one end set as an arc. It is rotatably installed in cavity one (431). When the dividing plate (434) is longitudinal, both sides of it are located inside cavity one (431). A cavity two (432) perpendicular to the axis of the shaft (41) is also provided on the outside of the shaft (41). A partition plate (433) is clamped from the outside to the inside of cavity two (432). The lower end of the partition plate (433) contacts the arc surface of the dividing plate (434). When the dividing plate (434) is transverse, its side abuts against the partition plate (433). The dividing plate (434) is clamped between the stationary ring component (44) and the moving ring component (45).

2. The rapid assembly mechanism for the permanent magnet submersible pump structure according to claim 1, characterized in that: The inner side wall of the second channel (412) has a longitudinally extending thin plate (413), which is pressed against the inner stationary ring component (44) and the moving ring component (45). The inner wall of the upper end of the second channel (412) has a thin plate (414), which contacts the upper end of the moving ring component (45) and forms a channel for gas passage. The thin plate (413) and the thin plate (414) are covered with a rubber layer.

3. The rapid assembly mechanism for the permanent magnet submersible pump structure according to claim 1, characterized in that: The outer side of the dividing plate (434) is covered with a rubber layer to prevent damage to the stationary ring component (44) and the moving ring component (45).

4. The rapid assembly mechanism for the permanent magnet submersible pump structure according to claim 1, characterized in that: The stationary ring component (44) includes a stationary ring body (441), and the rotating ring component (45) includes a rotating ring body (451), a spring (452) and a retaining ring (453), with the spring (452) located between the rotating ring body (451) and the retaining ring (453).

5. The rapid assembly mechanism for the permanent magnet submersible pump structure according to claim 4, characterized in that: The upper end of the shaft (41) has an auxiliary frame (46) for expanding the snap ring (453). The shaft (41) has an arc groove (472) running through it from top to bottom. Two auxiliary shafts (47) are inserted in the arc groove (472), and the ends of the auxiliary shafts (47) are inserted into the holes of the snap ring (453).

6. The rapid assembly mechanism for the permanent magnet submersible pump structure according to claim 5, characterized in that: The auxiliary shaft (47) has an integral outer expansion layer (471) on its outer side, and its lower end abuts against the snap ring (453). The cross section of the outer expansion layer (471) is arc-shaped and matches the arc groove (472).

7. The rapid assembly mechanism for the permanent magnet submersible pump structure according to claim 5, characterized in that: The upper end of the auxiliary shaft (47) is inclined and extended, and the auxiliary frame (46) is inverted triangular in shape, with inclined grooves (461) on both sides that cooperate with the inclined extension of the auxiliary shaft (47).

8. The rapid assembly mechanism for the permanent magnet submersible pump structure according to claim 4, characterized in that: The lower end face of the stationary ring body (441) is not higher than the lower end face of the shaft portion (41).

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