Cleaning device of observation window and powder stirring equipment

Abstract

The utility model discloses a cleaning device of an observation window and powder stirring equipment, the cleaning device of the observation window is applied to the powder stirring equipment, the powder stirring equipment is provided with the observation window, and the cleaning device of the observation window comprises a rotating assembly and a cleaning assembly. The rotating assembly is used for being mounted on the observation window, and the rotating assembly is used for rotating around the axial direction of the observation window relative to the observation window; the cleaning assembly is fixedly connected to the rotating assembly and used for extending from one end of the observation window to the other end of the observation window in the radial direction of the observation window and making contact with at least part of the surface of the observation window. According to the cleaning device for the observation window, powder attached to the observation window can be removed.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning observation windows, and in particular to an observation window cleaning device and a powder stirring device. Background Art

[0002] High-speed mixers, batch mixers, and spray dryers are all powder mixing equipment. In powder mixing equipment, high-speed mixing, pressure spraying, etc. usually cause powder to float. These powders floating in the air will adhere to the observation window of the equipment, causing dust to accumulate on the observation window, affecting the staff's observation of the internal situation of the equipment, and unable to judge whether the internal operation of the equipment is normal, posing a major quality and safety hazard. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and to provide an observation window cleaning device that can remove powder adhered to the observation window.

[0004] The present application also provides a powder mixing device.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0006] The cleaning device for an observation window according to the embodiment of the first aspect of the present application is applied to a powder mixing device, wherein the powder mixing device has an observation window, and the cleaning device for the observation window comprises: a rotating component, wherein the rotating component is used to be mounted on the observation window, and the rotating component is used to rotate around the axial direction of the observation window relative to the observation window; a cleaning component, wherein the cleaning component is fixedly connected to the rotating component, and the cleaning component is used to extend from one end of the observation window to the other end of the observation window along the radial direction of the observation window, and is used to contact at least part of the surface of the observation window.

[0007] The cleaning device for the observation window of the present application has the following advantages:

[0008] In the cleaning device of the observation window of the present application, since the cleaning component is fixedly connected to the rotating component and is used to extend from one end of the observation window to the other end of the observation window along the radial direction of the observation window, and is used to contact at least part of the surface of the observation window, therefore, when the rotating component rotates around the axial direction of the observation window relative to the observation window, the rotating component can drive the cleaning component to rotate, so that the cleaning component contacts various parts of the surface of the observation window during the rotation, thereby wiping off the powder adhering to the observation window through the cleaning component, thereby achieving the removal of the powder on the observation window, so that the staff can observe the situation inside the equipment through the observation window.

[0009] According to the cleaning device for the observation window of the first aspect of the present application, the rotating assembly includes a rotating member, which is installed on the observation window and is used to rotate around the axial direction of the observation window relative to the observation window, and the cleaning assembly is fixedly connected to the rotating member.

[0010] According to the cleaning device for the observation window of the first aspect embodiment of the present application, the central axis of the rotating member coincides with the central axis of the observation window, and the cleaning assembly includes a first cleaning member, one end of which is connected to the rotating member, and the other end of the first cleaning member is used to extend along the radial direction of the observation window toward the direction away from the rotating member to the edge of the observation window, and the first cleaning member is used to contact at least part of the surface of the observation window.

[0011] According to the cleaning device for the observation window of the first aspect embodiment of the present application, the first cleaning member includes a first connecting portion and a first cleaning portion, the first connecting portion is connected to the rotating member, the first cleaning portion is connected to the first connecting portion, and is used to be arranged close to the observation window along the axial direction of the observation window, and the first cleaning portion is used to contact at least part of the surface of the observation window.

[0012] According to the cleaning device for the observation window of the first aspect of the present application, the cleaning assembly also includes a second cleaning member, which is spaced apart from the first cleaning member, one end of the second cleaning member is connected to the rotating member, and the other end of the second cleaning member is used to extend along the radial direction of the observation window in a direction away from the rotating member to the edge of the observation window, and the second cleaning member is used to contact at least part of the surface of the observation window.

[0013] According to the cleaning device for the observation window of the first aspect embodiment of the present application, the second cleaning member includes a second connecting portion and a second cleaning portion, the second connecting portion is connected to the rotating member, the second cleaning portion is connected to the second connecting portion, and is used to be arranged close to the observation window along the axial direction of the observation window, and the second cleaning portion is used to contact at least part of the surface of the observation window.

[0014] According to the cleaning device for an observation window of the first embodiment of the present application, the cleaning assembly further includes a connecting member, which is fixedly connected to the rotating member, and the first cleaning member and the second cleaning member are both connected to the connecting member.

[0015] According to the cleaning device for the observation window of the first aspect of the present application, the rotating assembly also includes a limiting member, which is connected to the rotating member and protrudes from the rotating member in the radial direction of the rotating member. The connecting member is provided with a limiting groove extending along the radial direction of the rotating member, and the limiting member is passed through the limiting groove.

[0016] According to the cleaning device for the observation window of the first embodiment of the present application, the rotating assembly also includes a handpiece, which is detachably connected to the rotating member and is used to drive the rotating member to rotate relative to the observation window around the axial direction of the observation window.

[0017] According to the second embodiment of the present application, the powder mixing equipment includes: an observation window; and the cleaning device for the observation window as described above, wherein the cleaning device for the observation window is used to remove powder adhering to the observation window.

[0018] The powder mixing equipment of the present application has the following advantages:

[0019] In this embodiment, since the cleaning device of the observation window can remove the powder adhering to the observation window, when the powder mixing equipment of the present application is in operation, dust accumulation on the observation window can be avoided, so that the staff can observe the internal situation of the equipment in real time and judge whether the internal operation of the equipment is normal, so as to reduce the occurrence of safety accidents. Therefore, the powder mixing equipment of the present application can have higher safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic structural diagram of the cleaning device for the observation window in the present application is shown;

[0022] Figure 2 Shows the structural schematic diagram of the rotating assembly in this application Figure 1 ;

[0023] Figure 3 Shows the structural schematic diagram of the rotating assembly in this application Figure 2 ;

[0024] Figure 4 Shows the structural schematic of the cleaning component in this application Figure 1 ;

[0025] Figure 5 Shows the structural schematic of the cleaning component in this application Figure 2 .

[0026] Description of main component symbols:

[0027] 10- Cleaning device for observation window;

[0028] 100-rotating assembly; 110-rotating part; 120-limiting part; 130-hand piece; 140-bearing;

[0029] 200 - cleaning assembly; 210 - first cleaning member; 211 - first connecting portion; 212 - first cleaning portion; 220 - second cleaning member; 221 - second connecting portion; 222 - second cleaning portion; 230 - connecting member; 231 - limiting groove; 240 - fixing member;

[0030] 20-Observation window. DETAILED DESCRIPTION

[0031] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0034] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0035] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0036] Reference Figure 1 As shown, the observation window cleaning device 10 involved in the embodiment of the present application is applied to a powder mixing device. The powder mixing device has an observation window 20 . The observation window cleaning device 10 includes: a rotating component 100 and a cleaning component 200 .

[0037] Specifically, the rotating assembly 100 is used to be installed on the observation window 20, and the rotating assembly 100 is used to rotate around the axial direction of the observation window 20 relative to the observation window 20; the cleaning assembly 200 is fixedly connected to the rotating assembly 100, and the cleaning assembly 200 is used to extend from one end of the observation window 20 to the other end of the observation window 20 along the radial direction of the observation window 20, and is used to contact at least part of the surface of the observation window 20.

[0038] In the observation window cleaning device 10 of the present application, since the cleaning component 200 is fixedly connected to the rotating component 100, and is used to extend from one end of the observation window 20 to the other end of the observation window 20 along the radial direction of the observation window 20, and is used to contact at least part of the surface of the observation window 20, therefore, when the rotating component 100 rotates around the axial direction of the observation window 20 relative to the observation window 20, the rotating component 100 can drive the cleaning component 200 to rotate, so that the cleaning component 200 contacts various parts of the surface of the observation window 20 during the rotation, thereby wiping off the powder adhered to the observation window 20 by the cleaning component 200, thereby achieving the removal of the powder on the observation window 20, so that the staff can observe the situation inside the equipment through the observation window 20.

[0039] Reference Figure 2 As shown, the rotating assembly 100 includes a rotating member 110 , which is mounted on the observation window 20 and configured to rotate relative to the observation window 20 around the axial direction of the observation window 20 . The cleaning assembly 200 is fixedly connected to the rotating member 110 .

[0040] In this embodiment, since the cleaning component 200 is fixedly connected to the rotating member 110, the rotating member 110 is installed on the observation window 20 and is used to rotate around the axial direction of the observation window 20 relative to the observation window 20. Therefore, when the rotating member 110 rotates around the axial direction of the observation window 20 relative to the observation window 20, the cleaning component 200 can be driven to rotate by the rotating member 110, so that the cleaning component 200 can achieve the cleaning effect on the observation window 20.

[0041] Reference Figure 1 as well as Figure 4 As shown, the central axis of the rotating member 110 coincides with the central axis of the observation window 20, and the cleaning assembly 200 includes a first cleaning member 210, one end of the first cleaning member 210 is connected to the rotating member 110, and the other end of the first cleaning member 210 is used to extend along the radial direction of the observation window 20 toward the direction away from the rotating member 110 to the edge of the observation window 20, and the first cleaning member 210 is used to contact at least part of the surface of the observation window 20.

[0042] In this embodiment, since the central axis of the rotating member 110 coincides with the central axis of the observation window 20, one end of the first cleaning member 210 is connected to the rotating member 110, and the other end of the first cleaning member 210 is used to extend along the radial direction of the observation window 20 toward the direction away from the rotating member 110 to the edge of the observation window 20. Therefore, the cleaning range of the first cleaning member 210 can be located between the center of the observation window 20 and the edge of the observation window 20. When the first cleaning member 210 rotates with the rotating member 110, the first cleaning member 210 can gradually contact various places on the surface of the observation window 20, thereby achieving cleaning of various places on the surface of the observation window 20 through the first cleaning member 210.

[0043] Reference Figure 5 As shown, the first cleaning member 210 includes a first connecting portion 211 and a first cleaning portion 212. The first connecting portion 211 is connected to the rotating member 110. The first cleaning portion 212 is connected to the first connecting portion 211 and is used to be arranged close to the observation window 20 along the axial direction of the observation window 20, and the first cleaning portion 212 is used to contact at least part of the surface of the observation window 20.

[0044] Specifically, in this embodiment, the first cleaning portion 212 extends radially along the observation window 20 , with one end of the first cleaning portion 212 located at the center of the observation window 20 and the other end extending to the edge of the observation window 20 .

[0045] In this embodiment, the connection between the first cleaning portion 212 and the rotating part 110 can be achieved through the first connecting portion 211. Since the first cleaning portion 212 is used to be arranged close to the observation window 20 along the axial direction of the observation window 20 and is used to contact at least part of the surface of the observation window 20, the observation window 20 can be cleaned through the first cleaning portion 212.

[0046] Reference Figure 1 as well as Figure 4 As shown, the cleaning assembly 200 also includes a second cleaning member 220, which is spaced apart from the first cleaning member 210. One end of the second cleaning member 220 is connected to the rotating member 110, and the other end of the second cleaning member 220 is used to extend along the radial direction of the observation window 20 in a direction away from the rotating member 110 to the edge of the observation window 20, and the second cleaning member 220 is used to contact at least part of the surface of the observation window 20.

[0047] In this embodiment, since the other end of the second cleaning member 220 is used to extend along the radial direction of the observation window 20 toward the direction away from the rotating member 110 to the edge of the observation window 20, the cleaning range of the second cleaning member 220 can be located between the center of the observation window 20 and the edge of the observation window 20. When the second cleaning member 220 rotates with the rotating member 110, the second cleaning member 220 can gradually contact various locations on the surface of the observation window 20, thereby achieving cleaning of various locations on the surface of the observation window 20 through the second cleaning member 220. In this way, the observation window 20 can be cleaned simultaneously by the first cleaning member 210 and the second cleaning member 220, thereby improving the effect of removing powder adhering to the observation window 20.

[0048] Reference Figure 5 As shown, the second cleaning member 220 includes a second connecting portion 221 and a second cleaning portion 222. The second connecting portion 221 is connected to the rotating member 110, and the second cleaning portion 222 is connected to the second connecting portion 221 and is used to be arranged close to the observation window 20 along the axial direction of the observation window 20, and the second cleaning portion 222 is used to contact at least part of the surface of the observation window 20.

[0049] Specifically, in this embodiment, the second cleaning portion 222 extends radially along the observation window 20 , with one end of the second cleaning portion 222 located at the center of the observation window 20 and the other end extending to the edge of the observation window 20 .

[0050] In this embodiment, the connection between the second cleaning portion 222 and the rotating member 110 can be achieved through the second connecting portion 221. Since the second cleaning portion 222 is used to be arranged close to the observation window 20 along the axial direction of the observation window 20 and is used to contact at least part of the surface of the observation window 20, the observation window 20 can be cleaned by the second cleaning portion 222. In this way, the observation window 20 can be cleaned simultaneously by the first cleaning portion 212 and the second cleaning portion 222, thereby improving the effect of cleaning the powder adhering to the observation window 20.

[0051] Specifically, the materials of the first cleaning portion 212 and the second cleaning portion 222 may be the same or different.

[0052] More specifically, the first cleaning portion 212 is made of soft glue or a brush, and the second cleaning portion 222 is made of soft glue or a brush. In this embodiment, referring to Figure 5 As shown, the first cleaning portion 212 is made of soft rubber, and the second cleaning portion 222 is made of a brush. The cleaning portions made of different materials can achieve different degrees of cleaning of the observation window 20, thereby improving the cleaning effect of the observation window 20.

[0053] Reference Figure 4 as well as Figure 5 As shown, the cleaning assembly 200 further includes a connecting member 230 , which is fixedly connected to the rotating member 110 , and the first cleaning member 210 and the second cleaning member 220 are both connected to the connecting member 230 .

[0054] In this embodiment, since the connecting member 230 is fixedly connected to the rotating member 110, the first cleaning member 210 and the second cleaning member 220 are both connected to the connecting member 230. Therefore, the first cleaning member 210 and the second cleaning member 220 can be connected to the rotating member 110 through the connecting member 230, so that the rotating member 110 can drive the first cleaning member 210 and the second cleaning member 220 to rotate around the axial direction of the observation window 20, thereby realizing the cleaning effect of the first cleaning member 210 and the second cleaning member 220 on the observation window 20.

[0055] Specifically, in this embodiment, the cleaning component 200 also includes a fixing member 240, and the fixing member 240 and the connecting member 230 are both mounted on the rotating member 110, and the connecting member 230 is located between the fixing member 240 and the observation window 20. The rotating member 110 is provided with an external thread, and the fixing member 240 is provided with an internal thread. The fixing member 240 is threadedly connected to the rotating member 110 so that the connecting member 230 is fixed between the fixing member 240 and the observation window 20 through the fixing member 240, thereby achieving fixation between the connecting member 230 and the rotating member 110.

[0056] Reference Figure 2 as well as Figure 3 As shown, the rotating assembly 100 also includes a limit member 120, which is connected to the rotating member 110 and protrudes from the rotating member 110 along the radial direction of the rotating member 110. The connecting member 230 is provided with a limit groove 231 extending along the radial direction of the rotating member 110, and the limit member 120 is passed through the limit groove 231.

[0057] In this embodiment, since the limiting member 120 protrudes from the rotating member 110 along the radial direction of the rotating member 110, and the limiting member 120 is inserted into the limiting groove of the connecting member 230, when the rotating member 110 drives the connecting member 230 to move around the axial direction of the observation window 20, the limiting member 120 can limit the connecting member 230, so that the connecting member 230 and the rotating member 110 remain relatively stationary, avoiding the connecting member 230 from rotating relative to the rotating member 110, thereby ensuring that the rotating member 110 can drive the connecting member 230 to move around the axial direction of the observation window 20, thereby improving the cleaning effect of the cleaning component 200 on the observation window 20.

[0058] Reference Figure 2 as well as Figure 3 As shown, the rotating assembly 100 further includes a handpiece 130 , which is detachably connected to the rotating member 110 and is used to drive the rotating member 110 to rotate relative to the observation window 20 around the axial direction of the observation window 20 .

[0059] In this embodiment, since the handpiece 130 is connected to the rotating member 110 and is used to drive the rotating member 110 to rotate relative to the observation window 20 around the axial direction of the observation window 20, the handpiece 130 can be manually toggled to drive the rotating member 110 to rotate relative to the observation window 20 around the axial direction of the observation window 20, so that the rotating member 110 can drive the cleaning component 200 to rotate, thereby achieving the cleaning effect of the cleaning component 200 on the observation window 20, and since the rotating member 110 is connected to the limiting member 110 protruding from the rotating member 110 20. Therefore, the handpiece 130 is detachably connected to the rotating member 110. When the rotating member 110 is installed on the observation window 20, the handpiece 130 can be removed from the rotating member 110, and then the observation window 20 can be sleeved on the rotating member 110 from the end of the rotating member 110 away from the limiting member 120, so as to achieve the installation of the rotating member 110 and avoid the interference of the limiting member 120 on the installation of the rotating member 110. After the rotating member 110 is installed, the handpiece 130 can be connected to the rotating member 110 to realize the driving of the rotating member 110 by the handpiece 130.

[0060] Specifically, refer to Figure 3 As shown, in this embodiment, the handpiece 130 is provided with an external thread, the rotating member 110 is provided with an internal thread, and the handpiece 130 is threadedly connected to the rotating member 110.

[0061] Specifically, refer to Figure 2 As shown, in this embodiment, the rotating assembly 100 also includes a bearing 140, which is sleeved on the rotating member 110 and located between the rotating member 110 and the observation window 20, so as to support the rotating member 110 through the bearing 140 during the rotation of the rotating member 110, reduce the friction between the rotating member 110 and the observation window 20 during the rotation, and thereby ensure the rotation accuracy of the rotating member 110.

[0062] The powder mixing equipment involved in the embodiment of the present application includes: an observation window 20 and the above-mentioned observation window cleaning device 10.

[0063] Specifically, the observation window cleaning device 10 is used to remove powder adhered to the observation window 20 .

[0064] In this embodiment, since the cleaning device 10 of the observation window can remove the powder adhered to the observation window 20, when the powder mixing equipment of the present application is in operation, dust accumulation on the observation window 20 can be avoided, so that the staff can observe the internal situation of the equipment in real time and judge whether the internal operation of the equipment is normal, so as to reduce the occurrence of safety accidents. Therefore, the powder mixing equipment of the present application can have higher safety performance.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0066] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A cleaning device for an observation window, characterized in that: Applicable to a powder mixing device having an observation window, wherein the cleaning device for the observation window comprises: a rotating assembly, the rotating assembly being configured to be mounted on the observation window and configured to rotate relative to the observation window around the axial direction of the observation window; A cleaning assembly is fixedly connected to the rotating assembly, and is used to extend from one end of the observation window to the other end of the observation window along the radial direction of the observation window, and is used to contact at least part of the surface of the observation window.

2. The cleaning device for an observation window according to claim 1, characterized in that: The rotating assembly includes a rotating member, which is installed on the observation window and is used to rotate relative to the observation window around the axial direction of the observation window. The cleaning assembly is fixedly connected to the rotating member.

3. The cleaning device for an observation window according to claim 2, characterized in that: The central axis of the rotating member coincides with the central axis of the observation window, and the cleaning assembly includes a first cleaning member, one end of which is connected to the rotating member, and the other end of the first cleaning member is used to extend along the radial direction of the observation window toward the direction away from the rotating member to the edge of the observation window, and the first cleaning member is used to contact at least part of the surface of the observation window.

4. The cleaning device for an observation window according to claim 3, characterized in that: The first cleaning member includes a first connecting portion and a first cleaning portion, the first connecting portion is connected to the rotating member, the first cleaning portion is connected to the first connecting portion, and is used to be arranged close to the observation window along the axial direction of the observation window, and the first cleaning portion is used to contact at least part of the surface of the observation window.

5. The cleaning device for an observation window according to claim 3, characterized in that: The cleaning assembly also includes a second cleaning member, which is spaced apart from the first cleaning member. One end of the second cleaning member is connected to the rotating member, and the other end of the second cleaning member is used to extend along the radial direction of the observation window away from the rotating member to the edge of the observation window, and the second cleaning member is used to contact at least part of the surface of the observation window.

6. The cleaning device for an observation window according to claim 5, characterized in that: The second cleaning member includes a second connecting portion and a second cleaning portion, the second connecting portion is connected to the rotating member, the second cleaning portion is connected to the second connecting portion, and is used to be arranged close to the observation window along the axial direction of the observation window, and the second cleaning portion is used to contact at least part of the surface of the observation window.

7. The cleaning device for an observation window according to claim 5, characterized in that: The cleaning assembly further includes a connecting member, which is fixedly connected to the rotating member, and the first cleaning member and the second cleaning member are both connected to the connecting member.

8. The cleaning device for an observation window according to claim 7, characterized in that: The rotating assembly also includes a limiting member, which is connected to the rotating member and protrudes from the rotating member in the radial direction of the rotating member. The connecting member is provided with a limiting groove extending along the radial direction of the rotating member, and the limiting member is passed through the limiting groove.

9. The cleaning device for an observation window according to any one of claims 2 to 8, characterized in that: The rotating assembly further includes a handpiece, which is detachably connected to the rotating member and is used to drive the rotating member to rotate relative to the observation window around the axial direction of the observation window.

10. A powder mixing device, characterized in that: include: Observation window; as well as The observation window cleaning device according to any one of claims 1 to 9, wherein the observation window cleaning device is used to remove powder adhering to the observation window.

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