Papermaking wet mill

Abstract

The utility model relates to a papermaking wet grinding machine, which is characterized in that a driving mechanism drives a rotating main shaft to rotate, and the rotating main shaft rotates to drive a grinding disc to rotate, so that the grinding disc and a grinding body are in full contact, collision and friction with fed materials, and the materials are ground into particles with required particle sizes; due to the fact that most of the grinding bodies are located on the lower portion of the shell, and the distance between the adjacent grinding discs on the lower portion is set to be larger than that between the adjacent grinding discs on the upper portion, collision and friction between the grinding bodies and materials are increased, and the grinding efficiency is improved; according to the grinding device, the space between every two adjacent grinding discs is increased, more grinding bodies and the same number of materials can be stored through the large space between the grinding discs, more grinding bodies can be in contact, the grinding bodies, the grinding discs and the materials needing to be ground can make full contact, collide with one another and rub against one another, the grinding efficiency is improved, and the productivity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking equipment, in particular to a wet papermaking mill. Background Art

[0002] In papermaking, calcium carbonate can be used as a filler to increase the weight, strength, smoothness and other properties of paper. Compared with other fillers, calcium carbonate has better dispersibility, which can make the paper surface more uniform and smooth, and at the same time can reduce the ink leakage during operations such as printing. Calcium carbonate can also be used for the surface coating of paper, thereby improving the gloss of the paper, and at the same time can increase the abrasion resistance and water resistance of the paper, making it more durable.

[0003] In papermaking production, calcium carbonate is ground into particles of the required size by a wet mill. A plurality of grinding discs are provided on the drive shaft of the existing wet mill, and the distance between adjacent grinding discs is 80 mm. Since the distance between the grinding discs is relatively dense and a spoiler is provided between adjacent grinding discs, the zirconium beads accommodated between the grinding discs are limited, and only 3.2 tons of zirconium beads can be accommodated, reducing the grinding efficiency and limiting the output of qualified finished calcium carbonate. Summary of the Utility Model

[0004] Therefore, it is necessary to provide a wet papermaking mill to solve the technical problem that a plurality of grinding discs are provided on the drive shaft of the existing wet mill, the distance between adjacent grinding discs is 80 mm, and since the distance between the grinding discs is relatively dense and a spoiler is provided between adjacent grinding discs, the zirconium beads accommodated between the grinding discs are limited, and only 3.2 tons of zirconium beads can be accommodated, reducing the grinding efficiency and limiting the output of qualified finished calcium carbonate.

[0005] To achieve the above object, the inventor provides a wet papermaking mill, comprising:

[0006] A housing, a rotating main shaft is disposed through the housing; a first feed port, a second feed port and a discharge port are provided on the housing, the first feed port is used for feeding materials into the housing; the second feed port is used for feeding grinding media into the housing; the discharge port is used for outputting qualified materials;

[0007] A driving mechanism, the driving mechanism is disposed on one side of the housing, the driving mechanism is connected to the rotating main shaft, and the driving mechanism is used for providing a driving force to the rotating main shaft to drive the rotating main shaft to rotate;

[0008] A plurality of grinding discs; a plurality of the grinding discs are respectively connected to the rotating main shaft, the plurality of grinding discs are arranged longitudinally at intervals up and down, wherein the distance between adjacent lower grinding discs among the plurality of grinding discs is greater than the distance between adjacent upper grinding discs, and upper through holes are provided on the grinding discs;

[0009] and a separator, wherein the separator is connected to the rotating main shaft, the separator is arranged above the plurality of grinding discs, and the separator is used to separate the material from the grinding body in the shell.

[0010] As a preferred structure of the utility model, the spacing between adjacent grinding discs in the upper part is 80-83 mm;

[0011] The spacing between adjacent grinding discs in the lower part is 110-120 mm.

[0012] As a preferred structure of the utility model, the number of the grinding discs in the upper part is 7; the number of the grinding discs in the lower part is 12.

[0013] As a preferred structure of the utility model, the plurality of grinding discs are arranged in a clockwise spiral order in the vertical direction.

[0014] As a preferred structure of the utility model, the grinding disc is in the shape of a polygon, wherein the corners of the polygon are in the shape of circular arcs, and the sides of the polygon are in the shape of circular arcs.

[0015] As a preferred structure of the utility model, the papermaking wet grinding machine further comprises a plurality of bushings, and the bushings are arranged on the rotating main shaft between adjacent grinding discs.

[0016] As a preferred structure of the utility model, the papermaking wet grinding machine further comprises a wear-resistant layer, the wear-resistant layer is arranged on the inner wall of the shell, and the wear-resistant layer is detachably connected to the shell.

[0017] As a preferred structure of the utility model, the papermaking wet grinding machine also includes an anti-damage component, which is sleeved on the rotating main shaft between the separator and the grinding disc, and is used to prevent the rotating main shaft from wearing.

[0018] As a preferred structure of the utility model, the driving mechanism includes a first motor and a pulley assembly, and the motor is transmission-connected to the rotating spindle via the pulley assembly.

[0019] As a preferred structure of the utility model, the driving mechanism is a driving motor, and the driving motor is directly connected to the rotating spindle;

[0020] The driving motor comprises a housing, a stator and a rotor, wherein the stator and the rotor are respectively arranged in the housing;

[0021] The stator is fixedly arranged on the housing, the rotor is fixedly connected to the rotating main shaft, the stator and the rotor cooperate with each other, and an external power supply provides power to the stator, thereby driving the rotor to rotate.

[0022] Different from the prior art, the beneficial effects of the above technical solution are as follows: In the wet paper mill of the present utility model, the shell is filled with grinding media, and the rotating main shaft is driven to rotate by a driving mechanism. The rotation of the rotating main shaft drives the grinding disc to rotate, so that the grinding disc, the grinding media and the fed material are fully contacted, collided and rubbed, thereby grinding the material into particles of the required particle size. Then, the material and the grinding media are separated by a separator, and the qualified material is conveyed out through the discharge port. Since most of the grinding media are located in the lower part of the shell, the distance between adjacent grinding discs in the lower part is set to be greater than the distance between adjacent grinding discs in the upper part, which is beneficial to increasing the collision and friction between the grinding media and the material, improving the grinding efficiency. And in the present utility model, there is no spoiler plate between adjacent grinding discs, so the interval between adjacent grinding discs is increased. The larger distance between the grinding discs can store more grinding media. For the same amount of material, more grinding media can be contacted, so that the grinding media, the grinding disc and the material to be ground can be fully contacted, collided and rubbed with each other, improving the grinding efficiency and increasing the production capacity.

[0023] The above description of the utility model content is only an overview of the technical solution of this application. In order to enable those of ordinary skill in the art to more clearly understand the technical solution of this application, and then can be implemented according to the content recorded in the description and the drawings, and in order to make the above objects, other objects, features and advantages of this application more easily understood, the following is described in conjunction with the specific embodiments and drawings of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are only used to illustrate the principles, implementation methods, applications, features and effects of the specific embodiments of this application and other related contents, and should not be regarded as a limitation to this application.

[0025] In the drawings of the description:

[0026] Figure 1 One of the cross-sectional views of the wet paper mill described in the specific embodiment;

[0027] Figure 2 A partial structural schematic diagram of the wet paper mill described in the specific embodiment;

[0028] Figure 3 Another cross-sectional view of the wet paper mill described in the specific embodiment;

[0029] Figure 4 Another cross-sectional view of the wet paper mill described in the specific embodiment;

[0030] Figure 5 Another cross-sectional view of the wet paper mill described in the specific embodiment;

[0031] Figure 6 It is the fifth cross-sectional view of the wet paper mill described in the specific implementation manner.

[0032] The description of the reference numerals involved in the above-mentioned drawings is as follows:

[0033] 1. Housing

[0034] 11. First feed inlet

[0035] 12. Second feed inlet

[0036] 13. Discharge outlet

[0037] 2. Rotating main shaft

[0038] 3. Driving mechanism

[0039] 31. First motor

[0040] 32. Pulley assembly

[0041] 33. Driving motor;

[0042] 331. Outer shell

[0043] 332. Stator

[0044] 333. Rotor

[0045] 4. Grinding disc

[0046] 41. Through hole

[0047] 5. Separator

[0048] 6. Wear-resistant layer

[0049] 7. Anti-damage component

[0050] 8. Bushing Specific implementation manner

[0051] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects of this application, etc., the following will be described in detail in conjunction with the listed specific embodiments and with reference to the drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application, so they are only used as examples and cannot be used to limit the protection scope of this application.

[0052] Reference to "embodiment" in this document means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there is no technical contradiction or conflict, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0053] Unless otherwise defined, the meanings of the technical terms used in this document are the same as those commonly understood by those skilled in the technical field to which this application belongs; the use of the relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0054] In the description of this application, the phrase "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this document generally represents an "or" logical relationship between the associated objects before and after.

[0055] In this application, 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 quantitative, primary-secondary, or sequential relationships between these entities or operations.

[0056] Without further limitation, in this application, the use of "comprising", "including", "having", or other similar expressions in a statement is intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method, or product that includes the said elements, such that a process, method, or product that includes a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such a process, method, or product.

[0057] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood not to include the number itself; expressions such as "above", "below", "within", etc. are understood to include the number itself. In addition, in the description of the embodiments of this application, the meaning of "a plurality of" is two or more (including two), and similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.

[0058] In the description of the embodiments of the present application, the spatially related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the accompanying drawings. It is only for the convenience of describing the specific embodiments of the present application or for the reader's understanding, rather than indicating or implying that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that one element is connected "to" or "under" another element, it can not only be directly connected "to" or "under" another element, but also be indirectly connected "to" or "under" another element through an intermediate element.

[0059] Unless otherwise clearly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "joined", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art to which the present application pertains, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0060] Please refer to Figures 1 to 6 , this embodiment relates to a wet paper mill. The wet paper mill in this embodiment is used to produce calcium carbonate with a qualified particle size of 60 mesh. The wet paper mill includes:

[0061] A housing 1, where the housing 1 is made of a rigid metal material, such as stainless steel. A rotating main shaft 2 is disposed through the housing 1; a first feed port 11, a second feed port 12, and a discharge port 13 are provided on the housing 1. The first feed port 11 is used to put materials into the housing 1; it should be noted that in this embodiment, the material is calcium carbonate. The second feed port 12 is used to put grinding media into the housing 1; in this embodiment, the grinding media is zirconium beads. The discharge port 13 is used to output qualified materials; where the qualified materials refer to those with a calcium carbonate particle size of less than 2 μm after grinding and a proportion of more than 60%.

[0062] Furthermore, in this embodiment, as Figures 1 to 6As shown in the figure, the first feed inlet 11 is arranged at the lower end of the housing 1; the second feed inlet 12 is arranged at the upper end of the housing 1; the discharge outlet 13 is arranged at the upper end of the housing 1. Materials enter the housing 1 from the first feed inlet 11 at the lower part for grinding, and the qualified materials after grinding are output from the discharge outlet 13 at the upper end.

[0063] A driving mechanism 3, the driving mechanism 3 is arranged on one side of the housing 1, the driving mechanism 3 is connected to the rotating main shaft 2, and the driving mechanism 3 is used to provide driving force to the rotating main shaft 2 to drive the rotating main shaft 2 to rotate; the rotating main shaft 2 is driven to rotate by the drive of the driving machine.

[0064] A plurality of grinding discs 4; a plurality of the grinding discs 4 are respectively connected to the rotating main shaft 2, wherein the grinding disc 4 is detachably connected to the rotating main shaft 2, which is convenient for maintaining the grinding disc 4. A plurality of the grinding discs 4 are arranged at longitudinal intervals up and down. The spaced arrangement of the grinding discs 4 enables the accommodation of grinding media (zircon beads) and materials (calcium carbonate), increasing the collision and friction between the grinding media (zircon beads) and the materials (calcium carbonate), and improving the grinding efficiency. The distance between adjacent lower grinding discs 4 among the plurality of grinding discs 4 is greater than the distance between adjacent upper grinding discs 4; since most of the grinding media (zircon beads) are located in the lower part of the housing 1, setting the distance between adjacent lower grinding discs 4 to be greater than the distance between adjacent upper grinding discs 4 is beneficial to increasing the collision and friction between the grinding media (zircon beads) and the materials (calcium carbonate), improving the grinding efficiency. And in this embodiment, there is no spoiler plate between adjacent grinding discs 4, and the interval between adjacent grinding discs 4 is increased. The larger distance between the grinding discs 4 can store more grinding media (zircon beads). For the same amount of materials (calcium carbonate), more grinding media (zircon beads) can be contacted, enabling the grinding media (zircon beads), the grinding discs 4 and the materials (calcium carbonate) to be ground to fully collide and rub against each other, improving the grinding efficiency and production capacity. Among them, when there is a spoiler plate between the existing grinding discs 4, 3.2 tons of zircon beads can be accommodated. After further improvement, when there is no spoiler plate between the grinding discs 4 and the interval between the grinding discs 4 is appropriately increased, 4.8 tons can be accommodated, and the grinding efficiency is improved. The grinding disc 4 is provided with upper through holes 41. By providing the through holes 41, materials can pass through the through holes 41, and there are four through holes 41. It should be noted that in this embodiment, the number of the through holes 41 is not limited.

[0065] And a separator 5, the separator 5 is connected to the rotating main shaft 2, the separator 5 is arranged above the plurality of grinding discs 4, and the separator 5 is used to separate the materials from the grinding media in the housing 1, so as to convey the qualified materials out.

[0066] Specifically, in the wet paper mill of this embodiment, the housing 1 is filled with grinding media. The rotating main shaft 2 is driven to rotate by the driving mechanism 3. The rotation of the rotating main shaft 2 drives the grinding disc 4 to rotate, enabling the grinding disc 4, the grinding media, and the fed material to come into full contact, collision, and friction, thereby grinding the material into particles of the required particle size. Then, the material is separated from the grinding media through the separator 5, and the qualified material is conveyed out through the discharge port 13. Since most of the grinding media is located in the lower part of the housing 1, setting the spacing between adjacent grinding discs 4 in the lower part to be greater than the spacing between adjacent grinding discs 4 in the upper part is beneficial to increasing the collision and friction between the grinding media and the material, improving the grinding efficiency. And in this embodiment, there is no spoiler plate between adjacent grinding discs 4, so the interval between adjacent grinding discs 4 is increased. The larger spacing between the grinding discs 4 can store more grinding media. For the same amount of material, more grinding media can be contacted, enabling the grinding media, the grinding disc 4, and the material to be ground to come into full contact, collide, and friction with each other, improving the grinding efficiency and production capacity.

[0067] Optionally, in some embodiments, such as Figures 1 to 6 shown, the spacing between adjacent grinding discs 4 in the upper part is 80 - 83 mm. Since most of the grinding media is located in the lower part of the housing 1, the spacing between adjacent grinding discs 4 in the upper part can be set relatively small to improve the grinding efficiency. Preferably, in this embodiment, the spacing between adjacent grinding discs 4 in the upper part is 81 mm to improve the grinding efficiency.

[0068] Optionally, in some embodiments, such as Figures 1 to 6 shown, the spacing between adjacent grinding discs 4 in the lower part is 110 - 120 mm. Since most of the grinding media is located in the lower part of the housing 1, setting the spacing between adjacent grinding discs 4 in the lower part to be larger is beneficial to increasing the collision and friction between the grinding media and the material, improving the grinding efficiency. Preferably, in this embodiment, the spacing between adjacent grinding discs 4 in the lower part is 115 mm, which is beneficial to increasing the collision and friction between the grinding media and the material, improving the grinding efficiency.

[0069] Specifically, in this embodiment, as Figures 1 to 6 shown, the number of grinding discs 4 in the upper part is 7; the number of grinding discs 4 in the lower part is 12. It should be noted that in this embodiment, the number of grinding discs 4 is not limited. In other embodiments, the number of grinding discs 4 can be 20 or more.

[0070] Specifically, in this embodiment, as Figures 1 to 6 shown, multiple grinding discs 4 are arranged in a clockwise spiral in the vertical direction in sequence, enabling the material to move spirally along with the grinding discs 4, improving the grinding efficiency.

[0071] Specifically, in this embodiment, Figure 2 As shown, the grinding disc 4 is in the shape of a polygon, wherein the corners of the polygon are in the shape of circular arcs, and the sides of the polygon are in the shape of circular arcs, thereby reducing the rotation resistance and improving the grinding efficiency.

[0072] Optionally, in some embodiments, such as Figures 1 to 6 As shown, the papermaking wet grinding machine also includes a plurality of bushings 8, and the bushings 8 are arranged on the rotating main shaft 2 between adjacent grinding discs 4. The rigid bushings 8 protect the rotating main shaft 2 and prevent the grinding body from wearing the rotating main shaft 2.

[0073] Optionally, in some embodiments, such as Figure 3 As shown, the papermaking wet grinding machine further includes a wear-resistant layer 6, which is arranged on the inner wall of the housing 1, and the wear-resistant layer 6 is detachably connected to the housing 1. The housing 1 is protected by the wear-resistant layer 6 to prevent the grinding body from wearing the inner wall of the housing 1, and the wear-resistant layer 6 is detachably connected to the housing 1. When the wear-resistant layer 6 is damaged, the wear-resistant layer 6 can be replaced. The wear-resistant layer 6 is made of a rigid metal material, such as stainless steel.

[0074] Optionally, in some embodiments, such as Figure 4 As shown, the papermaking wet grinding machine further includes an anti-damage component 7, which is sleeved on the rotating main shaft 2 between the separator 5 and the grinding disc, and is used to prevent the rotating main shaft 2 from being worn. The anti-damage component 7 prevents the grinding body from wearing the rotating main shaft 2 between the separator 5 and the grinding disc, thereby protecting the rotating main shaft 2. The anti-damage component 7 is an anti-damage sleeve 8. When the anti-damage sleeve 8 is damaged, it is replaced to avoid damage to the rotating main shaft 2.

[0075] Optionally, in some embodiments, such as Figures 1 to 6 As shown, the driving mechanism 3 includes a first motor 31 and a pulley assembly 32 . The motor is connected to the rotating main shaft 2 via the pulley assembly 32 , thereby driving the rotating main shaft 2 to rotate.

[0076] Optionally, in some embodiments, such as Figure 6 As shown, the driving mechanism 3 is a driving motor 33, and the driving motor 33 is directly connected to the rotating main shaft 2, thereby driving the rotating main shaft 2 to rotate, wherein the driving motor 33 is directly connected to the rotating main shaft 2, which reduces transmission loss, reduces energy consumption, improves transmission efficiency, and makes the overall structure more compact and saves space. Specifically, in this embodiment, as Figure 6As shown, the drive motor 33 includes a housing 331, a stator 332, and a rotor 333. The stator 332 and the rotor 333 are respectively disposed within the housing 331. The stator 332 is fixedly disposed on the housing 331. The rotor 333 is fixedly connected to the rotating main shaft 2. The stator 332 and the rotor 333 cooperate with each other. An external power supply provides power to the stator 332, thereby driving the rotor 333 to rotate, reducing transmission loss, reducing energy consumption, improving transmission efficiency, making the overall structure more compact, and saving space.

[0077] Finally, it should be noted that although the above embodiments have been described in the text of the specification and the drawings of the present application, the patent protection scope of the present application cannot be limited thereby. Any technical solutions generated by equivalent structure or equivalent process substitution or modification based on the substantial concept of the present application and using the content recorded in the text of the specification and the drawings of the present application, as well as those directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included within the patent protection scope of the present application.

Claims

1. A papermaking wet grinding machine, characterized in that: include: A housing, wherein a rotating main shaft is provided through the housing; a first feed port, a second feed port and a discharge port are provided on the housing, wherein the first feed port is used for feeding materials into the housing; the second feed port is used for feeding grinding bodies into the housing; and the discharge port is used for discharging qualified materials; A driving mechanism, the driving mechanism is arranged on one side of the housing, the driving mechanism is connected to the rotating main shaft, and the driving mechanism is used to provide a driving force to the rotating main shaft to drive the rotating main shaft to rotate; A plurality of grinding discs; the plurality of grinding discs are respectively connected to the rotating spindle, the plurality of grinding discs are arranged vertically with intervals up and down, wherein the spacing between adjacent grinding discs in the lower part of the plurality of grinding discs is greater than the spacing between adjacent grinding discs in the upper part, and the grinding discs are provided with upper through holes; and a separator, wherein the separator is connected to the rotating main shaft, the separator is arranged above the plurality of grinding discs, and the separator is used to separate the material from the grinding body in the shell.

2. The papermaking wet grinding machine according to claim 1, characterized in that: The spacing between adjacent grinding discs in the upper part is 80-83 mm; The spacing between adjacent grinding discs in the lower part is 110-120 mm.

3. The papermaking wet grinding machine according to claim 1 or 2, characterized in that: The number of the grinding discs in the upper part is 7; the number of the grinding discs in the lower part is 12.

4. The papermaking wet grinding machine according to claim 1, characterized in that: The plurality of grinding discs are arranged in a clockwise spiral order in the vertical direction.

5. The papermaking wet grinding machine according to claim 1, characterized in that: The grinding disc is in the shape of a polygon, wherein the corners of the polygon are in the shape of circular arcs, and the sides of the polygon are in the shape of circular arcs.

6. The papermaking wet grinding machine according to claim 1, characterized in that: The papermaking wet grinding machine further comprises a plurality of bushings, which are arranged on the rotating main shaft between adjacent grinding discs.

7. The papermaking wet grinding machine according to claim 1, characterized in that: The papermaking wet grinding machine further comprises a wear-resistant layer, which is arranged on the inner wall of the shell, and the wear-resistant layer is detachably connected to the shell.

8. The papermaking wet grinding machine according to claim 1, characterized in that: The papermaking wet grinding machine also includes an anti-damage component, which is sleeved on the rotating main shaft between the separator and the grinding disc, and is used to prevent the rotating main shaft from wearing.

9. The papermaking wet grinding machine according to claim 1, characterized in that: The driving mechanism comprises a first motor and a pulley assembly, and the motor is transmission-connected to the rotating spindle via the pulley assembly.

10. The papermaking wet grinding machine according to claim 1, characterized in that: The driving mechanism is a driving motor, and the driving motor is directly connected to the rotating spindle; The driving motor comprises a housing, a stator and a rotor, wherein the stator and the rotor are respectively arranged in the housing; The stator is fixedly arranged on the housing, the rotor is fixedly connected to the rotating main shaft, the stator and the rotor cooperate with each other, and an external power supply provides power to the stator, thereby driving the rotor to rotate.

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