Stator powder coating device

Abstract

The utility model relates to the technical field of powder coating, in particular to a stator powder coating device which comprises a fluidization barrel, a powder pumping mechanism, a grinding mechanism and a powder feeding mechanism. Therefore, the grinding mechanism is additionally arranged in the device, in the production process, the powder pumping mechanism can pump powder in the fluidization barrel into the grinding mechanism to be ground, the powder meeting the particle size is put into the fluidization barrel again, and the particle size uniformity of epoxy resin powder in the fluidization barrel in the continuous production process is guaranteed; meanwhile, the epoxy resin powder can be recycled, so that powder waste is avoided, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of powder coating, in particular to a stator powder coating device. Background Art

[0002] Currently, all motor stators on the market need to undergo insulation treatment. During the insulation treatment process, there is a powder coating step, which is to immerse the heated stator in fluidized epoxy resin powder and then send it into an oven for heating and curing, so that the epoxy resin can completely wrap and cover the stator's welding points to achieve the purpose of insulation.

[0003] However, during continuous production, with the consumption of epoxy resin powder and the continuous accumulation of heat in the epoxy resin powder, the particle size of the epoxy resin powder in the fluidized barrel will become larger and larger, which is not conducive to production control and affects the coating effect and stability. Even when the powder particle size is greater than a certain value, the epoxy resin powder will be discarded and the production cost will increase.

[0004] It should be noted that the information disclosed in this background technology section is only intended to increase the understanding of the overall background of the utility model, and should not be regarded as an admission or suggestion in any form that the information constitutes prior art already known to a person skilled in the art. Utility Model Content

[0005] In order to solve the technical problem of excessively large powder particles, the utility model provides a stator powder coating device, which includes a fluidizing barrel, a powder extraction mechanism, a grinding mechanism and a powder feeding mechanism;

[0006] The powder extraction mechanism is connected to the fluidizing barrel; the grinding mechanism is connected to the powder extraction mechanism, and the powder extraction mechanism can extract the powder in the fluidizing barrel into the grinding mechanism for grinding; the powder feeding mechanism is respectively connected to the grinding mechanism and the fluidizing barrel.

[0007] Furthermore, the powder extraction mechanism comprises a powder extractor and a powder bin, one end of the powder extractor is provided with a powder extraction port, the powder extraction port extends into the fluidizing barrel, the other end of the powder extractor is connected to the powder bin, and a powder pump is provided in the powder bin.

[0008] The powder bin is provided with a pressure relief port for adjusting the pressure in the powder bin.

[0009] Furthermore, the powder feeding mechanism comprises a powder tank and an air grinding chamber, one end of the powder tank is connected to the powder pump, the other end of the powder tank is connected to the air grinding chamber, and the air grinding chamber is connected to the powder feeding mechanism.

[0010] Furthermore, the powder feeding mechanism also includes a motor and a classifying wheel. The classifying wheel is arranged in the air grinding chamber, and the motor is drivingly connected to the classifying wheel.

[0011] Furthermore, the sorting wheel is a grading turbine.

[0012] Furthermore, the powder feeding mechanism also includes a powder discharging mechanism, which is arranged between the powder tank and the air grinding chamber, and the powder discharging mechanism is connected to the powder tank and the air grinding chamber respectively, and the powder discharging mechanism is used to control the powder discharging speed from the powder tank to the air grinding chamber.

[0013] Furthermore, the powder feeding mechanism is a vibrating feeding belt or a spiral feeding device.

[0014] Furthermore, the powder feeding mechanism comprises a separator and a powder feeding port, one end of the separator is connected to the air grinding chamber, the other end of the separator is connected to the powder feeding port, and the powder feeding port extends into the fluidizing barrel.

[0015] The separator is provided with an air recovery port for recovering gas.

[0016] Based on the above, the stator powder coating device provided by the utility model, compared with the prior art, adds a grinding mechanism in the device. During the production process, the powder extraction mechanism can extract the powder in the fluidized barrel into the grinding mechanism for grinding, and the powder that meets the particle size is put back into the fluidized barrel. Thereby, the particle size uniformity of the epoxy resin powder in the fluidized barrel is ensured during the continuous production process, and the coating effect and stability are improved. At the same time, the epoxy resin powder can also be recycled to avoid powder waste and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the prior art descriptions. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. The positional relationship described in the drawings in the following description is based on the direction of the components in the drawings unless otherwise specified.

[0018] Figure 1 A schematic diagram of the structural framework of a stator toner coating device provided in one embodiment of the utility model;

[0019] Reference numerals:

[0020] 10- fluidizing barrel 20- powder extraction mechanism 30- grinding mechanism

[0021] 40-powder feeding mechanism 11-fluidizing plate 21-powder pump

[0022] 22-powder bin 23-powder extraction port 24-powder pump

[0023] 31- powder tank 32- air grinding chamber 33- motor

[0024] 34-sorting wheel 35-powder discharging mechanism 36-first valve

[0025] 41-Separator 42-Powder inlet 43-Second valve

[0026] 221-pressure relief port 411-air recovery port DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof all mean "at least including".

[0029] See also Figure 1 , Figure 1 It is a schematic diagram of the structural framework of a stator toner coating device provided in one embodiment of the utility model.

[0030] In order to solve the technical problem of excessively large powder particles, or to achieve at least one of the above advantages or other advantages, an embodiment of the present invention provides a stator powder coating device. As shown in the figure, the stator powder coating device includes a fluidizing barrel 10, a powder extraction module 20, a grinding module 30 and a powder feeding module 40.

[0031] The bottom plate inside the fluidizing barrel 10 is a fluidizing plate 11. An air inlet is provided below the fluidizing plate 11, and an air compression system is connected through the air inlet. The air compression system can be a conventional air compression system, such as an air compressor. Epoxy resin powder is contained in the fluidizing barrel 10. The height of the epoxy resin powder is lower than the depth of the fluidizing barrel 10. The height of the epoxy resin powder can be adjusted according to actual production requirements to ensure that the stator can be completely immersed.

[0032] The powder extraction module 20 includes a powder extractor 21 and a powder bin 22. A powder extraction port 23 is provided at one end of the powder extractor 21, and the powder extraction port 23 extends into the fluidizing barrel 10, and the other end of the powder extractor 21 is connected to the powder bin 22. In specific implementation, the powder extractor 21 is connected to the fluidizing barrel 10 and the powder bin 22 through pipelines. A powder extraction port 23 is provided at one end of the powder extractor 21 connected to the fluidizing barrel 10, and the powder extraction port 23 extends into the interior of the fluidizing barrel 10 and is immersed in the epoxy resin powder. The powder extractor 21 can extract the epoxy resin powder in the fluidizing barrel 10 into the powder bin 22. Preferably, a pressure relief port 221 is provided on the powder bin 22, which can adjust the pressure in the powder bin 22. When the powder bin 22 needs to be maintained or repaired, the pressure is relieved through the pressure relief port 221, which is convenient for maintenance and repair.

[0033] It should be noted that the powder extraction port 23 should be arranged in the fluidizing barrel 10 near the fluidizing plate 11 to ensure that the powder extraction port 23 is completely immersed in the epoxy resin powder.

[0034] The grinding module 30 includes a powder tank 31 and an air grinding chamber 32. In a specific implementation, a powder pump 24 is provided in the powder bin 22. The powder pump 24 is connected to one end of the powder tank 31 through a pipeline, and the powder pump 24 can pump the epoxy resin powder in the powder bin 22 into the powder tank 31. The other end of the powder tank 31 is connected to the air grinding chamber 32. When the epoxy resin powder in the powder tank 31 is transported to the air grinding chamber 32, the air grinding chamber 32 can grind the epoxy resin powder, thereby reducing the particle size of the epoxy resin powder. The air grinding chamber 32 is connected to the fluidizing barrel 10, and the ground epoxy resin powder is re-added into the fluidizing barrel 10. Preferably, a first valve 36 is provided at one end of the powder tank 31 close to the air grinding chamber 32, which is used to control the feeding speed from the powder tank 31 to the air grinding chamber 32, so as to ensure the normal operation of the grinding process in the air grinding chamber 32.

[0035] On the basis of the above, the grinding module 30 further includes a motor 33 and a classifying wheel 34. The classifying wheel 34 is arranged in the air grinding chamber 32, and the motor 33 is drivingly connected to the classifying wheel 34. Preferably, the classifying wheel 34 is a classifying turbine.

[0036] When the sorting wheel 34 rotates, the epoxy resin powder ground in the air grinding chamber 32 is attracted by centrifugal force, and the epoxy resin powder that meets the particle size requirements can flow back into the fluidizing barrel 10 through the sorting wheel 34, and the epoxy resin powder that does not meet the particle size requirements will fall back into the air grinding chamber 32 for continued grinding to ensure that the particle size of the epoxy resin powder re-introduced into the fluidizing barrel 10 meets the production requirements.

[0037] In some preferred embodiments, the grinding module 30 further includes a powder discharge mechanism 35. The powder discharge mechanism 35 is disposed between the powder tank 31 and the air grinding chamber 32, and the powder discharge mechanism 35 is connected to the powder tank 31 and the air grinding chamber 32 respectively. The powder discharge mechanism 35 can more accurately control the discharge speed and quantity from the powder tank 31 to the air grinding chamber 32, ensuring that the epoxy resin powder is fully ground in the air grinding chamber 32 to meet the particle size requirements.

[0038] Preferably, the powder discharge mechanism 35 is a vibrating discharge belt or a spiral discharger.

[0039] The powder feeding module 40 includes a separator 41 and a powder feeding port 42. One end of the separator 41 is connected to the air mill chamber 32, and the other end of the separator 41 is connected to the powder feeding port 42, and the powder feeding port 42 extends into the fluidizing barrel 10. In specific implementation, the epoxy resin powder is ground in the air mill chamber 32, and the epoxy resin powder that meets the particle size requirements can enter the separator 41 through the sorting wheel 34. The separator 41 separates the powder from the gas-solid mixture through centrifugal force and re-enters the fluidizing barrel 10 through the powder feeding port 42. Preferably, the separator 41 is provided with an air recovery port 411, and the air recovery port 411 is connected to the air compression system (not shown in the figure) to recover the separated gas and recycle it.

[0040] In some preferred embodiments, the separator 41 is a cyclone separator.

[0041] In some preferred embodiments, a second valve 43 is provided between the separator 41 and the powder inlet 42 for controlling the speed and amount of powder being put into the fluidizing barrel 10 .

[0042] It is understandable that the powder extraction port 23 and the powder inlet 42 can control the height of the epoxy resin powder in the fluidizing barrel 10 to remain relatively stable, ensuring that the epoxy resin powder can always completely immerse the stator.

[0043] To sum up, compared with the prior art, the stator powder coating method and device provided by the utility model, by adding a grinding mechanism in the device, during the production process, the powder extraction mechanism can extract the powder in the fluidized barrel into the grinding mechanism for grinding, and the powder that meets the particle size is put back into the fluidized barrel, thereby ensuring the uniformity of the particle size of the epoxy resin powder in the fluidized barrel during continuous production, improving the coating effect and stability, and at the same time, the epoxy resin powder can also be repeatedly recycled to avoid powder waste and reduce production costs.

[0044] Although the term "gas mill chamber" and "separator" are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

[0045] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the utility model can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation on the claim.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A stator powder coating device, characterized in that: The stator powder coating device comprises: Fluidizing barrel; A powder extraction mechanism, the powder extraction mechanism is connected to the fluidizing barrel; A grinding mechanism, the grinding mechanism is connected to the powder pumping mechanism, and the powder pumping mechanism can pump the powder in the fluidizing barrel into the grinding mechanism for grinding; A powder feeding mechanism is connected to the grinding mechanism and the fluidizing barrel respectively.

2. The stator powder coating device according to claim 1, characterized in that: The powder extraction mechanism comprises a powder extraction machine and a powder bin. One end of the powder extraction machine is provided with a powder extraction port, and the powder extraction port extends into the fluidizing barrel. The other end of the powder extraction machine is connected to the powder bin, and a powder pump is provided in the powder bin.

3. The stator powder coating device according to claim 2, characterized in that: The powder bin is provided with a pressure relief port.

4. The stator powder coating device according to claim 2, characterized in that: The powder feeding mechanism comprises a powder tank and an air grinding chamber, one end of the powder tank is connected to the powder pump, the other end of the powder tank is connected to the air grinding chamber, and the air grinding chamber is connected to the powder feeding mechanism.

5. The stator powder coating device according to claim 4, characterized in that: The powder feeding mechanism further comprises a motor and a classifying wheel. The classifying wheel is arranged in the air grinding chamber, and the motor is drivingly connected to the classifying wheel.

6. The stator powder coating device according to claim 5, characterized in that: The sorting wheel is a grading turbine.

7. The stator powder coating device according to claim 4, characterized in that: The powder feeding mechanism also includes a powder discharging mechanism, which is arranged between the powder tank and the air grinding chamber, and is connected to the powder tank and the air grinding chamber respectively, and is used to control the powder discharging speed from the powder tank to the air grinding chamber.

8. The stator powder coating device according to claim 7, characterized in that: The powder feeding mechanism is a vibrating feeding belt or a spiral feeding device.

9. The stator powder coating device according to claim 4, characterized in that: The powder feeding mechanism comprises a separator and a powder feeding port, one end of the separator is connected to the air grinding chamber, the other end of the separator is connected to the powder feeding port, and the powder feeding port extends into the fluidizing barrel.

10. The stator powder coating device according to claim 9, characterized in that: The separator is provided with an air recovery port.

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