Quick assembling mechanism for permanent magnet submersible pump structure

Abstract

The invention discloses a permanent magnet submersible pump structure rapid assembling mechanism which comprises a workbench, a water pump main body limited on the workbench, a working frame installed on the workbench and an assembling mechanism on the working frame, and the assembling mechanism comprises a shaft part which is in a longitudinal cylindrical shape and is internally provided with a static ring part and a movable ring part in a clamped mode; the upper end of the shaft part is provided with an airflow pipe for generating airflow inside the shaft part; the supporting part has a longitudinal state and a transverse state and is located on the side edge of the shaft part. The first thin plate and the second thin plate form a gas channel to guide gas flow to flow around the static ring component and the movable ring component, non-contact blowing is conducted, surface stains are removed, then the static ring component and the movable ring component are limited, it is ensured that the axes of the static ring component and the movable ring component coincide, the assembly precision and speed are directly improved, and the longitudinal state and the transverse state of the partition plate are achieved; installation of the static ring component and the moving ring component is achieved directly through stretching and retracting of the shaft part, and traditional manual adjustment is replaced.

Description

Technical Field

[0001] The present invention relates to the technical field of water pump installation, and particularly to a rapid assembly mechanism for the structure of a permanent magnet submersible pump. Background Art

[0002] During the installation of a permanent magnet submersible pump, the installation of the mechanical seal is an extremely crucial step. The submersible pump works completely immersed in liquid. Once the mechanical seal fails, the liquid will instantly flood into the motor cavity. The water ingress will inevitably cause the winding to short-circuit and the controller to burn out, resulting in the scrapping of the entire machine, and the loss is much greater than that of an ordinary water pump. The installation quality is directly related to the sealing performance and service life of the water pump. The mechanical seal consists of a dynamic ring and a static ring. During the installation of the dynamic ring and the static ring, absolute cleanliness must be maintained. All components, installation tools, and the workbench must be kept spotless. Any tiny particle may scratch the sealing surface and cause leakage.

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

[0004] When installing the static ring and the dynamic ring, absolute cleanliness must be ensured. When installing, it is necessary to manually contact the static ring and the dynamic ring. Even when wearing rubber gloves, the gloves will still adhere to stains to a certain extent when contacting other objects. Therefore, it is easy to contact the stains with the static ring and the dynamic ring, resulting in the affected cleaning degree. In addition, during the installation process, the static ring and the dynamic ring also need to be contacted with lubricating oil. When the lubricating oil adheres to the gloves, it has a certain stickiness, which makes it easier for stains to adhere to the gloves and has a certain impact on the installation of the static ring and the dynamic ring. Summary of the Invention

[0005] The purpose of the present invention is to provide a rapid assembly mechanism for the structure of a permanent magnet submersible pump to solve the problems raised in the above background art.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A rapid assembly mechanism for the structure of a permanent magnet submersible pump, including a workbench, a water pump main body limited on the workbench, a workbench-mounted workbench frame, and an assembly mechanism on the workbench frame. The assembly mechanism includes:

[0007] A shaft part, which is longitudinally cylindrical, internally holds a static ring component and a dynamic ring component, and has an air flow pipe at the upper end for generating air flow inside the shaft part;

[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 component and the rotating ring component. When in the transverse state, it pushes the stationary ring component, and when in the longitudinal state, it separates from the stationary ring component and the rotating ring component.

[0009] Furthermore, a first channel and a second channel are provided inside the shaft part. The first channel and the second channel are connected end to end and penetrate through the shaft part at 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 rotating ring component.

[0010] Furthermore, the inner side wall of the second channel has a longitudinally extending thin plate 1, which presses against the inner stationary ring component and the rotating ring component. The upper inner wall of the second channel has a thin plate 2, which contacts the upper end of the rotating ring component and forms a channel for gas passage. The thin plate 1 and the thin plate 2 are coated with a rubber layer.

[0011] Furthermore, a first cavity opening is provided on both sides of the shaft part. The support part includes a dividing plate with one end being arc-shaped, which is rotatably installed in the first cavity opening. When the dividing plate is in the longitudinal state, both of its side surfaces are located inside the first cavity opening. A second cavity opening perpendicular to the axis of the shaft part is also provided on the outer side of the shaft part. A partition plate is clamped in the second cavity opening from the outside to the inside. The lower end of the partition plate contacts the arc surface of the dividing plate, and when the dividing plate is in the transverse state, its side surface abuts against the partition plate. The dividing plate is clamped between the stationary ring component and the rotating ring component.

[0012] Furthermore, a layer of rubber layer is coated on the outer side of the dividing plate 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 snap ring. The spring is located between the rotating ring body and the snap ring.

[0014] Furthermore, the upper end of the shaft part has an auxiliary bracket for expanding the snap ring. An arc-shaped groove penetrates through the shaft part 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 snap ring.

[0015] Furthermore, an outward expanding layer is integrally provided on the outer side of the auxiliary shaft, and the lower end abuts against the snap ring. The cross-section of the outward expanding layer is arc-shaped and is matched with the arc-shaped groove.

[0016] Furthermore, the upper end of the auxiliary shaft extends obliquely, and the auxiliary bracket is in an inverted triangular shape, and both side edges have inclined grooves that cooperate with the obliquely extending parts of the auxiliary shaft.

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

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

[0019] 1. The gas channel is formed by the first thin plate and the second thin plate to guide the air flow 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 in position to ensure that their axes coincide, directly improving the assembly accuracy and speed. The dividing plate has two states, longitudinal and transverse, and the installation of the stationary ring component and the rotating ring component is directly achieved through the expansion and contraction of the shaft part, replacing the traditional manual adjustment.

[0020] 2. The dividing plate pushes the stationary ring component to extrude the pre-injected lubricating oil, enabling the oil to automatically penetrate into the sealing surface and avoiding pollution during the oil immersion process.

[0021] 3. The auxiliary shaft cooperates with the inclined groove of the auxiliary frame of the outer expansion layer to control the expansion and reset of the circlip. Due to the shape of the arc-shaped groove, its axis coincides with the axis of the shaft part. After the circlip is installed, it does not contact the output end of the water pump main body, avoiding damage caused by rubbing.

[0022] 4. The longitudinal and transverse movements of the dividing plate assemble the stationary ring component and the rotating ring component, avoiding damage to the sealing surface caused by manual accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

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

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

[0026] Figure 3 is a schematic diagram of the semi-sectional structure of the shaft part of the present invention;

[0027] Figure 4 is a schematic diagram of the disassembled structure of the shaft part, the stationary ring component and the rotating ring component of the present invention;

[0028] Figure 5 is a schematic diagram of the semi-sectional plane structure of the assembly mechanism of the present invention;

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

[0030] Figure 7 is the present invention Figure 6 partial enlarged schematic diagram of A in;

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

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

[0033] In the figure: 1, workbench; 2, water pump main body; 3, work rack; 4, assembly mechanism; 41, shaft part; 411, first channel; 412, second channel; 413, first thin plate; 414, second thin plate; 42, air flow pipe; 43, support part; 431, first cavity opening; 432, second cavity opening; 433, partition board; 434, dividing board; 44, stationary ring component; 441, stationary ring body; 45, rotating ring component; 451, rotating ring body; 452, spring; 453, snap ring; 46, auxiliary rack; 461, inclined groove; 47, auxiliary shaft; 471, outer expansion layer; 472, arc groove. Specific embodiments

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1-9 , the present invention provides a technical solution: The submersible pump works completely immersed in the liquid, so mechanical sealing is extremely important. At present, during the assembly process, the stationary ring and the rotating ring are manually installed, including cleaning the gland seal cavity on the water pump main body 2 with an air gun, cleaning the stationary ring and the rotating ring, and then immersing the stationary ring and the rotating ring in lubricating oil to wrap the stationary ring and the rotating ring with the lubricating oil. Then the installation starts. During this process, the hands always need to contact the stationary ring and the rotating ring, and even the stationary ring and the rotating ring may need to change positions on the hands. Repeatedly grasping the cleaned stationary ring and rotating ring easily causes stains to reattach to the stationary ring and rotating ring, affecting the quality of the stationary ring and rotating ring. Based on this, a rapid assembly mechanism for the structure of a permanent magnet submersible pump is proposed. As Figures 1-3 shown, it includes a workbench 1, a water pump main body 2 limited on the workbench 1, a work rack 3 installed on the workbench 1, and an assembly mechanism 4 on the work rack 3. The assembly mechanism 4 includes:

[0036] The shaft part 41, which is a longitudinal cylindrical shape, internally holds a stationary ring component 44 and a rotating ring component 45, and has an air flow pipe 42 at the upper end for generating air flow inside the shaft part 41;

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

[0038] Specifically, a workbench 1 is installed with a work rack 3 that can be telescoped up and down. The work rack 3 is equipped with an assembly mechanism 4. The assembly mechanism 4 can be telescoped with the work rack 3 and can also move horizontally to align the assembly mechanism 4 with the position of the water pump main body 2. The workbench 1 is provided with a cylinder for limiting the water pump main body 2. The assembly mechanism 4 includes a shaft portion 41 and a support portion 43. The shaft portion 41 houses a stationary ring component 44 and a moving ring component 45, and has an air flow pipe 42 at the upper end. The outer end of the air flow pipe 42 is connected to an air pump for generating an air flow to the stationary ring component 44 and the moving ring component 45 to achieve a cleaning effect. The support portion 43 is installed on the side of the shaft portion 41, and its function is to space the stationary ring component 44 and the moving ring component 45 apart, and has two types of deformations, vertical and horizontal. When horizontal, it pushes the stationary ring component 44 downward to cooperate with the water pump main body 2. When vertical, it moves upward to remove the shaft portion 41 so that the stationary ring component 44 and the moving ring component 45 are in contact.

[0039] As Figure 3 shown, a first channel 411 and a second channel 412 are formed inside the shaft portion 41. The first channel 411 and the second channel 412 are connected end to end and penetrate the shaft portion 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, the first channel 411 and the second channel 412 penetrate the shaft portion 41 to make it cylindrical, and the diameter of the second channel 412 is larger than that of the first channel 411 so that the upper end of the moving ring component 45 is abutted to achieve a limiting effect. The first channel 411 and the second channel 412 with a connecting function have an air flow of the air flow pipe 42 moving from top to bottom to clean the stationary ring component 44 and the moving ring component 45.

[0041] As Figure 4 shown, the inner side wall of the second channel 412 has a longitudinally extending thin plate 413. The thin plate 413 presses against the inner stationary ring component 44 and the moving ring component 45. The upper inner wall of the second channel 412 has a thin plate 414 that 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 coated with a rubber layer.

[0042] Specifically, the functions of the thin plate 413 and the thin plate 414 are to create a gap between the stationary ring component 44 and the moving ring component 45 and the second channel 412, and at the same time reduce the contact area of the stationary ring component 44 and the moving ring component 45. As much as possible, the stationary ring component 44 and the moving ring component 45 are cleaned by the air flow. The rubber layer is to prevent the stationary ring component 44 and the moving ring component 45 from being damaged due to being limited, and also achieve a function of deforming under force to fix the stationary ring component 44 and the moving ring component 45.

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

[0044] Specifically, the support portion 43 includes a partition plate 434. One end of the partition plate 434 is arc-shaped, and the arc-shaped end is installed in the cavity opening 431. The partition plate 434 can rotate around the arc-shaped end. There is also a cavity opening 432 on the outer side of the shaft portion 41, and a partition plate 433 is clamped inside. The partition plate 433 is used to block the partition plate 434 so that when it is horizontal, it abuts against the partition plate 433 to prevent it from rotating upward again. When installing the moving ring component 45, the partition plate 434 is in a vertical state, and the moving ring component 45 can be directly clamped into the channel 412 from bottom to top. Then, the partition plate 434 is made horizontal, and the stationary ring component 44 is clamped into the channel 412, with its upper end abutting against the partition plate 434.

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

[0046] As Figure 5 shown, the stationary ring component 44 includes a stationary ring body 441, and the moving ring component 45 includes a moving ring body 451, a spring 452, and a snap ring 453. The spring 452 is located between the moving ring body 451 and the snap ring 453. Specifically, the stationary ring body 441, the moving ring body 451, the spring 452, and the snap ring 453 are all prior arts.

[0047] As Figure 3 、 Figure 4 、 Figure 8 shown, the upper end of the shaft portion 41 has an auxiliary bracket 46 for expanding the snap ring 453. An arc-shaped groove 472 runs through the shaft portion 41 from top to bottom, and two auxiliary shafts 47 are inserted into the arc-shaped groove 472. 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 shafts 47 and expand them outward. It should be noted that the auxiliary shafts 47 can be manually expanded outward to expand the snap ring 453, and the auxiliary bracket 46 plays a role in clamping to prevent the snap ring 453 from resetting.

[0049] As Figure 8As shown, an outwardly expanding layer 471 is integrally provided on the outer side of the auxiliary shaft 47, and the lower end abuts against the snap ring 453. The cross-section of the outwardly expanding layer 471 is arc-shaped and is matched with the arc-shaped groove 472.

[0050] Specifically, the outwardly expanding layer 471 is matched with the arc-shaped groove 472 to limit the auxiliary shaft 47 and prevent it from tilting. It should be noted that in addition to using the auxiliary frame 46 to limit the auxiliary shaft 47, other methods can also be used to limit it to achieve the expansion of the auxiliary shaft 47. It should be noted that the snap ring 453 is matched 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, so that the auxiliary shaft 47 moves along the arc-shaped groove 472 and the snap ring 453 expands, which can prevent the snap ring 453 from contacting the output end of the water pump main body 2 and avoid rubbing.

[0051] The upper end of the auxiliary shaft 47 extends obliquely, and the auxiliary frame 46 is in an inverted triangular shape, and both side edges are provided with inclined grooves 461 that cooperate with the obliquely extending portions of the auxiliary shaft 47.

[0052] Specifically, the auxiliary shaft 47 is matched with the auxiliary frame 46, and the inclined groove 461 is in a buckled state with the auxiliary shaft 47 to prevent the auxiliary shaft 47 from moving outwards.

[0053] The lower end surface of the stationary ring body 441 is not higher than the lower end surface of the shaft portion 41, so that the stationary ring body 441 fits with the inner wall of the lower end of the gland seal cavity of the water pump main body 2.

[0054] The working principle of the present invention: The upper end of the water pump main body 2 has a gland seal cavity, and the stationary ring component 44 and the moving ring component 45 need to be installed inside. First, the partition plate 434 is in a vertical state, and then the moving ring component 45 is sleeved from the lower end of the shaft portion 41 into the passage two 412. Secondly, the partition plate 434 is rotated to be in a horizontal state, and the upper end abuts against the moving ring component 45. Then, the stationary ring component 44 is sleeved from bottom to top into the passage two 412 and abuts against the lower end of the partition plate 434. It should be noted that the outer side of the stationary ring component 44 is squeezed by the rubber layer on the thin plate one 413 to limit the stationary ring component 44;

[0055] Under the action of the thin plate one 413 and the thin plate two 414, channels for gas to pass through are provided around the stationary ring component 44 and the moving ring component 45. The outer end of the air flow pipe 42 is connected to an existing air pump. In the presence of gas, the gas is realized to move around the stationary ring component 44 and the moving ring component 45 from top to bottom, and the stains on the stationary ring component 44 and the moving ring component 45 are blown off to a certain extent. Secondly, the stationary ring component 44 and the moving ring component 45 are both located on the axis of the passage two 412, and their axes coincide. Therefore, during assembly, the stationary ring component 44 and the moving ring component 45 can be directly assembled together, simplifying the steps.

[0056] There is a partition plate 434 between the stationary ring component 44 and the rotating ring component 45. Under the action of the air flow, the part where the stationary ring component 44 and the rotating ring component 45 are pressed against each other can be cleaned to a certain extent, and there is no need for manual re-contact.

[0057] Secondly, a certain amount of lubricating oil is poured into the gland sealing cavity of the water pump main body 2. The shaft part 41 is fitted with the output end of the water pump main body 2. The stationary ring component 44 and the rotating ring component 45 are sleeved on the output end of the water pump main body 2. The stationary ring component 44 is pushed downward by the partition plate 434, so that the lubricating oil is squeezed, and the lubricating oil automatically enters the surfaces where the stationary ring component 44 and the rotating ring component 45 need to contact. Thus, there is no need to immerse the stationary ring component 44 and the rotating ring component 45 in the lubricating oil again to prevent the adhesion of extra stains.

[0058] Based on the above-mentioned cooperation between the shaft part 41 and the output end of the water pump main body 2, the auxiliary frame 46 on the shaft part 41 can expand the auxiliary shaft 47, and then expand the snap ring 453, so that the snap ring 453 is fitted with the output end of the water pump main body 2, and the rotating ring component 45 moves along the output end of the water pump main body 2 into the gland sealing cavity. Also due to the action of the outer expansion layer 471, the snap ring 453 can be pushed downward, and the rotating ring component 45 moves downward without the shaft part 41 moving. Therefore, the spring 452 is squeezed. After the shaft part 41 is taken out upward, first loosen the auxiliary frame 46, the snap ring 453 will be fixed with the output end of the water pump main body 2, and then the shaft part 41 moves upward, so that the partition plate 434 also moves upward accordingly, moving the rotating ring body 451 upward to a certain extent and squeezing the spring 452, and the partition plate 434 gradually changes from the horizontal state to the vertical state, and then disengages from the stationary ring component 44 and the rotating ring component 45, so that the stationary ring component 44 and the rotating ring component 45 are pressed against each other under the action of the spring 452, realizing non-contact cleaning, while loading lubricating oil and installing in a non-contact manner.

[0059] After the installation is completed, the empty assembly mechanism 4 is cleaned by the air flow in the air flow pipe 42, so that the residual lubricating oil adhering to the assembly mechanism 4 is cleaned to a certain extent, and the subsequent stationary ring component 44 and rotating ring component 45 are prevented from adhering to too much lubricating oil, which makes it difficult to handle the adhesion of stains.

[0060] It should be noted that in this article, relational terms such as first and second are only used 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 term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0061] Finally, it should be noted that the above are only 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 perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall 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 main body (2) limited on the workbench (1), a work frame (3) installed on the workbench (1), and an assembly mechanism (4) on the work frame (3), characterized in that, The assembly mechanism (4) includes: A shaft portion (41), which is longitudinally cylindrical, internally holds a stationary ring component (44) and a moving ring component (45), and has an air flow pipe (42) at the upper end for generating air flow inside the shaft portion (41); A support portion (43), which has two states, longitudinal and transverse. It is located on the side of the shaft portion (41), separates the stationary ring component (44) and the moving ring component (45), and pushes the stationary ring component (44) in the transverse state, and separates from the stationary ring component (44) and the moving ring component (45) in the longitudinal state.

2. The rapid assembly mechanism for the structure of the permanent magnet submersible pump according to claim 1, wherein: A first channel (411) and a second channel (412) are opened inside the shaft portion (41). The first channel (411) and the second channel (412) are connected end to end and penetrate the shaft portion (41) at both ends respectively. The diameter of the second channel (412) is larger than that of the first channel (411), and the second channel (412) is used to limit the stationary ring component (44) and the moving ring component (45).

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

4. The rapid assembly mechanism for the structure of the permanent magnet submersible pump according to claim 2, characterized in that: On both sides of the shaft portion (41), a first cavity opening (431) is provided. The support portion (43) includes a dividing plate (434) with an arc-shaped end, which is rotatably installed in the first cavity opening (431). When the dividing plate (434) is longitudinal, both of its side surfaces are inside the first cavity opening (431). An outer side of the shaft portion (41) is also provided with a second cavity opening (432) perpendicular to the axis of the shaft portion (41). A partition plate (433) is clamped in the second cavity opening (432) from outside to inside. The lower end of the partition plate (433) contacts the arc surface of the dividing plate (434), and when the dividing plate (434) is transverse, its side surface abuts against the partition plate (433). The dividing plate (434) is clamped between the stationary ring component (44) and the moving ring component (45).

5. The rapid assembly mechanism for the structure of a permanent magnet submersible pump according to claim 4, characterized in that: A rubber layer is coated on the outer side of the dividing plate (434) to prevent damage to the stationary ring component (44) and the moving ring component (45).

6. The quick assembly mechanism for the structure of the permanent magnet submersible pump according to claim 1, characterized in that: The stationary ring component (44) includes a stationary ring body (441), and the moving ring component (45) includes a moving ring body (451), a spring (452) and a snap ring (453). The spring (452) is located between the moving ring body (451) and the snap ring (453).

7. The quick assembly mechanism for the structure of the permanent magnet submersible pump according to claim 6, characterized in that: The upper end of the shaft portion (41) has an auxiliary bracket (46) for expanding the snap ring (453). An arc-shaped groove (472) penetrates the shaft portion (41) from top to bottom, and two auxiliary shafts (47) are inserted into the arc-shaped groove (472). The ends of the auxiliary shafts (47) are inserted into the holes of the snap ring (453).

8. The quick assembly mechanism for the permanent magnet submersible pump structure according to claim 7, characterized in that: An outward expanding layer (471) is integrally formed on the outer side of the auxiliary shaft (47), and the lower end abuts against the snap ring (453). The cross section of the outward expanding layer (471) is arc-shaped and is matched with the arc-shaped groove (472).

9. The rapid assembly mechanism for the structure of a permanent magnet submersible pump according to claim 7, characterized in that: The upper end of the auxiliary shaft (47) extends obliquely, the auxiliary frame (46) is in an inverted triangular shape, and both side edges are provided with inclined grooves (461) that cooperate with the obliquely extending part of the auxiliary shaft (47).

10. The rapid assembly mechanism for the structure of a permanent magnet submersible pump according to claim 6, characterized in that: The lower end surface of the stationary ring body (441) is not higher than the lower end surface of the shaft portion (41).

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