Storage tank observation device and storage tank

Abstract

The utility model provides an observation device of a storage tank and the storage tank, and the observation device of the storage tank comprises an observation window structure which is arranged on a tank body of the storage tank; the cleaning part is rotatably arranged in the tank body and is used for cleaning the observation window structure; the photoelectric sensor is arranged on one side of the observation window structure, and the photoelectric sensor can detect the cleanliness of the observation window structure; and the illuminating part is arranged on one side of the observation window structure and irradiates the observation window structure. According to the technical scheme of the invention, the problem that the disassembly and assembly of the observation window in the prior art are easy to cause high hidden danger of production is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of containing jar, specifically, a kind of observation device and storage tank of storage tank. BACKGROUND

[0002] In the food industry, storage tank is usually made of corrosion-resistant white steel material. Since the white steel material storage tank is not convenient for operator to observe, an observation window is usually provided on the tank body at the observation port. In this way, the operator can observe the material condition inside the tank body through the observation window.

[0003] However, due to the splashing of materials inside the tank body, the materials splashed onto the observation window will affect the line of sight, making it inconvenient for the operator to observe through the observation window.

[0004] In related technology, the observation window is usually removed and cleaned. However, the disassembly of the observation window may cause foreign matter to enter the tank body from the observation port, and repeated disassembly of the observation window may wear out the sealing strip, thereby affecting the airtightness of the storage tank. Therefore, the disassembly of the observation window in related technology may cause high production hazards. SUMMARY

[0005] The main purpose of the present utility model is to provide an observation device and storage tank for a storage tank to solve the problem of high production hazards caused by the disassembly of the observation window in related technology.

[0006] To achieve the above purpose, according to one aspect of the present utility model, an observation device for a storage tank is provided, comprising: an observation window structure arranged on the tank body of the storage tank; a cleaning element rotatably arranged in the tank body, the cleaning element being used to clean the observation window structure; a photoelectric sensor arranged on one side of the observation window structure, the photoelectric sensor being capable of detecting the cleanliness of the observation window structure; and an illuminating element arranged on one side of the observation window structure and illuminating the observation window structure.

[0007] Further, the observation device for the storage tank further comprises a drive motor arranged on the observation window structure, the motor shaft of the drive motor being rotatable to drive the cleaning element to rotate; the photoelectric sensor is connected to the motor housing of the drive motor, and / or the illuminating element is connected to the motor housing of the drive motor.

[0008] Further, the observation window structure comprises a connecting ring connected to the tank body and a transparent plate arranged in the connecting ring, the cleaning element being used to clean the transparent plate, and the observation device for the storage tank further comprises a support rod connected between the motor housing of the drive motor and the connecting ring.

[0009] Further, the observation window structure further comprises a convex ring arranged at the observation opening of the tank body, the convex ring is provided with a first threaded structure, the connecting ring is provided with a second threaded structure, and the first threaded structure is threadedly matched with the second threaded structure.

[0010] Further, the support rods are multiple, the first ends of the multiple support rods are arranged at intervals on the motor shell, and the second ends of the multiple support rods are arranged at intervals along the circumference of the connecting ring.

[0011] Further, the photoelectric sensor and the illuminating piece are located on the side of the observation window structure away from the tank body, the photoelectric sensor is located on the side of the illuminating piece away from the observation window structure, and / or the photoelectric sensor and the illuminating piece are arranged at intervals along the circumference of the motor shaft.

[0012] Further, the photoelectric sensor and the illuminating piece are located on the side of the observation window structure away from the tank body, the photoelectric sensor is located on the side of the illuminating piece away from the observation window structure, and / or the photoelectric sensor and the illuminating piece are arranged at intervals along the circumference of the motor shaft.

[0013] Further, the observation device of the storage tank further comprises a driving motor and a sleeve, the motor shaft of the driving motor is arranged on the observation window structure and drives the cleaning piece to rotate, and the sleeve is arranged on the observation window structure and is sleeved outside the motor shaft.

[0014] Further, the observation device of the storage tank further comprises a driving motor and a control piece, the photoelectric sensor is signal-connected with the control piece, the control piece is control-connected with the driving motor, and the motor shaft of the driving motor rotates to drive the cleaning piece to rotate.

[0015] According to another aspect of the utility model, a kind of storage tank is provided, including tank body and the observation device of being arranged at the observation opening of tank body, and the observation device is the observation device of the above-mentioned storage tank.

[0016] The utility model discloses a technical scheme, the observation device of storage tank includes: observation window structure, cleaning part, photoelectric sensor and lighting part. Observation window structure sets up on the jar body of storage tank. Cleaning part rotatably sets up in the jar body, and cleaning part is used for cleaning observation window structure. Photoelectric sensor sets up at one side of observation window structure, and photoelectric sensor can detect the cleanliness of observation window structure. Lighting part sets up at one side of observation window structure and irradiates observation window structure. In this way, photoelectric sensor can detect the cleanliness of observation window structure, when the cleanliness of observation window structure is below preset value, can start cleaning part and clean observation window structure. Through the rotation of cleaning part, can automatically remove the adherend on observation window structure, such as material residue or water stain, ensure that observation window structure always keeps high transparency, thereby the condition in the jar body is observed, reduced labor intensity, improved cleaning efficiency. Lighting part can provide light source for observation window structure, so that photoelectric sensor can obtain clear, consistent reflection signal when detecting the cleanliness of observation window structure, even in the dim or poor light condition of production environment, can also accurately judge the cleanliness of observation window structure. In this way, through the above setting, the observation device can realize self-cleaning, avoids the disassembly of observation window structure, reduces the risk of foreign matter entering, reduces the influence on the airtightness of storage tank, reduces the production hidden danger. Therefore, the technical scheme of the application effectively solves the problem that the disassembly of observation window in the related art easily brings higher production hidden danger. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the present application, serve to explain the present application. In the drawings:

[0018] Figure 1 A perspective structural schematic view of an embodiment of the observation device according to the present application is shown;

[0019] Figure 2 A perspective structural schematic view of the observation device of Figure 1 is shown, without showing the support rod;

[0020] Figure 3 A perspective structural schematic view of the observation window structure and the cleaning part of the observation device of Figure 1 is shown.

[0021] Among them, the above drawing includes the following sign:

[0022] 10, jar body;

[0023] 20, observation window structure; 21, connecting ring; 22, transparent plate; 23, convex ring;

[0024] 30, cleaning part;

[0025] 40. Photoelectric sensor;

[0026] 50. Illumination;

[0027] 60. Drive motor; 61. Motor housing; 62. Motor shaft;

[0028] 71. Support rod; 72. Sleeve. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not intended to limit the present application and its application or use in any way. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0030] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0031] Unless specifically stated otherwise, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in the examples herein are not intended to limit the scope of the present application. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportion relationship. The technology, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0032] As Figures 1 to 3As shown, in this embodiment, the observation device for the storage tank includes: an observation window structure 20, a cleaning component 30, a photoelectric sensor 40, and an illumination component 50. The observation window structure 20 is disposed on the tank body 10 of the storage tank. The cleaning component 30 is rotatably disposed inside the tank body 10 and is used to clean the observation window structure 20. The photoelectric sensor 40 is disposed on one side of the observation window structure 20 and is capable of detecting the cleanliness of the observation window structure 20. The illumination component 50 is disposed on one side of the observation window structure 20 and illuminates the observation window structure 20.

[0033] In this way, the photoelectric sensor 40 can detect the cleanliness of the observation window structure 20. When the cleanliness of the observation window structure 20 is lower than a preset value, the cleaning component 30 can be activated to clean the observation window structure 20. The rotation of the cleaning component 30 automatically removes any adhering substances, such as material residue or water stains, from the observation window structure 20, ensuring that the observation window structure 20 always maintains high transparency. This facilitates observation of the inside of the tank 10, reduces labor intensity, and improves cleaning efficiency. The illumination component 50 provides a light source for the observation window structure 20, enabling the photoelectric sensor 40 to obtain a clear and consistent reflected signal when detecting the cleanliness of the observation window structure 20. Even in dimly lit or poorly lit production environments, the cleanliness of the observation window structure 20 can be accurately determined. Thus, through the above-mentioned design, the observation device can achieve self-cleaning, avoiding the need to disassemble the observation window structure 20, reducing the risk of foreign objects entering, reducing the impact on the airtightness of the storage tank, and reducing potential production hazards. Therefore, the technical solution of this application effectively solves the problem in related technologies where the disassembly and assembly of the observation window easily leads to high production hazards.

[0034] In this embodiment, the cleaning component 30 includes a scraper and an adhesive strip disposed on the scraper. The scraper is rotatably mounted on the observation window structure 20. The adhesive strip is preferably a food-grade adhesive strip. There are two scrapers, both of which are connected to the motor shaft 62 of the drive motor 60. The two scrapers extend in the same direction.

[0035] like Figures 1 to 3 As shown, the observation device for the storage tank also includes a drive motor 60 mounted on the observation window structure 20. The motor shaft 62 of the drive motor 60 rotates to drive the cleaning component 30 to rotate. The drive motor 60 facilitates the rotation of the cleaning component 30, improving the ease of use of the observation device. Using a motor as a power source allows for precise control of the rotation speed and frequency of the cleaning component 30, improving cleaning efficiency and the automation level of the observation device. A photoelectric sensor 40 is connected to the motor housing 61 of the drive motor 60, and an illumination component 50 is also connected to the motor housing 61 of the drive motor 60. This facilitates the placement of the photoelectric sensor 40 and the illumination component 50, reduces structural complexity, lowers manufacturing costs, and makes the observation device more compact.

[0036] In the embodiment, the cleaning member 30 is rotatably arranged on the side of the observation window structure 20 facing the tank body 10, so that the cleaning member 30 is located inside the tank body 10, facilitating the cleaning of the side of the observation window structure 20 facing the tank body 10 by the cleaning member 30. The motor shaft 62 penetrates the observation window structure 20 and extends into the tank body 10, and the cleaning member 30 is connected to the end of the motor shaft 62 extending into the tank body 10. The motor shaft 62 is rotated to drive the cleaning member 30 to rotate.

[0037] In other embodiments, the photosensor 40 is connected to the motor housing 61 of the driving motor 60, or the illuminating member 50 is connected to the motor housing 61 of the driving motor 60.

[0038] As shown in Figures 1 to 3 The observation window structure 20 includes a connecting ring 21 connected to the tank body 10 and a transparent plate 22 arranged in the connecting ring 21, and the cleaning member 30 is used to clean the transparent plate 22. The observation device of the storage tank further includes a support rod 71 connected between the motor housing 61 of the driving motor 60 and the connecting ring 21. The arrangement of the support rod 71 can support the driving motor 60, so that the connection between the motor housing 61 of the driving motor 60 and the connecting ring 21 is more reliable, so as to facilitate the driving motor shaft 62 of the driving motor 60 to drive the cleaning member 30 to rotate. And the above arrangement makes the rotation of the cleaning member 30 during cleaning more stable, improving the reliability of cleaning.

[0039] In the embodiment, the transparent plate 22 is preferably a glass plate, and the transparent plate 22 is preferably circular. The diameter of the transparent plate 22 is preferably 20 cm, and the thickness of the transparent plate 22 is preferably 1.5 cm. The axis of the motor shaft 62 of the driving motor 60 is arranged at the center of the transparent plate 22.

[0040] As shown in Figures 1 to 3 The observation window structure 20 further includes a convex ring 23 arranged at the observation port of the tank body 10, the convex ring 23 is provided with a first threaded structure, the connecting ring 21 is provided with a second threaded structure, and the first threaded structure can be screwed with the second threaded structure. Through the cooperation of the first threaded structure of the convex ring 23 and the second threaded structure of the connecting ring 21, the installation and disassembly of the observation window structure 20 are more convenient, facilitating the maintenance and replacement of the observation window structure 20, while ensuring the sealing of the connection between the tank body 10 and the observation window structure 20, preventing air leakage from affecting the negative pressure state of the tank body 10.

[0041] In the embodiment, the first threaded structure is an external threaded structure, and the second threaded structure is an internal threaded structure.

[0042] As shown in Figures 1 to 3As shown, there are multiple support rods 71. The first ends of the multiple support rods 71 ​​are spaced apart on the motor housing 61, and the second ends of the multiple support rods 71 ​​are spaced apart circumferentially along the connecting ring 21. The arrangement of multiple support rods 71 ​​can provide more reliable support for the drive motor 60, further enhancing the overall structural stability of the observation device. In this embodiment, there are four support rods 71.

[0043] It should be noted that "multiple" refers to a quantity of two or more.

[0044] like Figures 1 to 3 As shown, both the photoelectric sensor 40 and the illumination element 50 are located on the side of the observation window structure 20 away from the tank body 10 to reduce the impact on the materials inside the tank body 10. The photoelectric sensor 40 is located on the side of the illumination element 50 away from the observation window structure 20, and the photoelectric sensor 40 and the illumination element 50 are spaced apart along the circumferential direction of the motor shaft 62. The positional design of the photoelectric sensor 40 and the illumination element 50 ensures that the photoelectric sensor 40 can effectively detect the cleanliness of the observation window structure 20, while the illumination element 50 can provide sufficient illumination for the observation window structure 20, making the detection more accurate and reliable. The spaced arrangement of the photoelectric sensor 40 and the illumination element 50 reduces mutual interference and improves detection accuracy.

[0045] In other embodiments, the photoelectric sensor 40 is located on the side of the illumination element 50 opposite to the observation window structure 20. Alternatively, the photoelectric sensor 40 and the illumination element 50 are spaced apart circumferentially along the motor shaft 62.

[0046] like Figures 1 to 3 As shown, there is a first preset gap between the photoelectric sensor 40 and the observation window structure 20. There is a second preset gap between the illumination element 50 and the observation window structure 20. The setting of the first and second preset gaps can reduce the wear between the photoelectric sensor 40 and the observation window structure 20, reduce the wear between the illumination element 50 and the observation window structure 20, and at the same time maintain sufficient detection distance and illumination distance, ensuring the stable and accurate operation of the system and effective detection.

[0047] In other embodiments, a first preset gap exists between the photoelectric sensor 40 and the observation window structure 20. Alternatively, a second preset gap exists between the illumination element 50 and the observation window structure 20.

[0048] like Figures 1 to 3As shown, the observation device for the storage tank also includes a drive motor 60 and a sleeve 72. The motor shaft 62 of the drive motor 60 passes through the observation window structure 20 and drives the cleaning component 30 to rotate. The sleeve 72 is disposed on the observation window structure 20 and sleeved over the motor shaft 62. The sleeve 72 protects the motor shaft 62 from external factors, improves the reliability of the motor shaft 62, and extends the service life of the drive motor 60. Furthermore, the above-mentioned structure is simple and easy to manufacture.

[0049] In this embodiment, the motor shaft 62 passes through the observation window structure 20 and extends into the tank body 10. The motor shaft 62 includes a first shaft segment and a second shaft segment. The first shaft segment is located on the side of the observation window structure 20 away from the tank body 10, that is, the first shaft segment is located on the outside of the tank body 10. The second shaft segment is located on the side of the observation window structure 20 facing the tank body 10, that is, the second shaft segment is located on the inside of the tank body 10. The sleeve 72 is disposed on the side of the observation window structure 20 away from the tank body 10, and the sleeve 72 is sleeved on the outside of the first shaft segment, and the first shaft segment is rotatably disposed within the sleeve 72.

[0050] In this embodiment, the observation window structure 20 is provided with a through hole through which the motor shaft 62 passes, and a seal is provided between the through hole and the motor shaft 62. The seal is preferably a flexible packing or a skeleton oil seal. The flexible packing is disposed on the through hole and abuts against the motor shaft to achieve a seal between the motor shaft and the through hole. The skeleton oil seal is disposed on the through hole, and the elastic lip of the skeleton oil seal is in close contact with the motor shaft to achieve a seal between the motor shaft and the through hole.

[0051] like Figures 1 to 3 As shown, the observation device for the storage tank also includes a drive motor 60 and a control unit. A photoelectric sensor 40 is signal-connected to the control unit, and the control unit is control-connected to the drive motor 60. The motor shaft 62 of the drive motor 60 rotates to drive the cleaning component 30 to rotate. The signal connection between the photoelectric sensor 40 and the control unit enables automatic cleaning control. When the cleanliness of the observation window structure 20 is lower than a preset value, the control unit automatically starts the cleaning program to clean the observation window structure 20 without manual intervention, thus improving the automation level and response speed of the observation device.

[0052] In this embodiment, the photoelectric sensor 40 is preferably a diffuse reflection photoelectric sensor. When the cleanliness of the observation window structure 20 is lower than a preset value, the reflection distance of the diffuse reflection photoelectric sensor is short. At this time, the photoelectric sensor 40 transmits a cleaning signal to the control unit, and the control circuit of the control unit is turned on to drive the cleaning component 30 to perform a cleaning operation via the drive motor 60. After the drive motor 60 has been working for a preset time, the diffuse reflection photoelectric sensor detects the cleanliness of the observation window structure 20. When the cleanliness of the observation window structure 20 reaches or exceeds the preset value, the photoelectric sensor 40 transmits a stop signal to the control unit, and the control circuit of the control unit is turned off to stop the drive motor 60, thereby stopping the cleaning operation of the cleaning component 30.

[0053] In the embodiment, the control member is in control connection with the lighting member 50. When the control member controls the driving motor 60 to rotate, the lighting member 50 turns on the lighting. When the control member controls the driving motor 60 to stop, the lighting member 50 turns off the lighting.

[0054] The application further provides a storage tank, which comprises a tank body 10 and an observation device arranged at an observation opening of the tank body 10, and the observation device is the observation device of the storage tank described above. The observation device described above can solve the problem that the disassembly of the observation window in the related art easily causes high production hidden danger, so that the storage tank with the observation device can solve the same technical problem. The application of the observation device described above to the storage tank can realize real-time monitoring of the material state in the tank body 10, reduce production delay or quality problems caused by untimely observation of the material, and at the same time, through automatic cleaning, the good observation condition of the observation window structure 20 is maintained, and the production safety and efficiency are greatly improved.

[0055] The inventor finds that the inside of the storage tank in the related art is in a vacuum state, and when the observation window needs to be disassembled, the vacuum state needs to be removed first, so that the production efficiency is low, and the labor cost is increased. Moreover, the operation of disassembling, cleaning and assembling the observation window needs to spend 3 to 4 hours. The application of the technical solution of the embodiment reduces the disassembly of the observation window structure 20, and the cleaning of the observation window structure 20 only needs 8 to 10 minutes.

[0056] In the embodiment, the tank body 10 is made of white steel material.

[0057] In the description of the present application, it should be understood that "a plurality of" means two or more than two. The directions such as "front, back, top, bottom, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the direction or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these direction words do not indicate and imply that the indicated device or element must have a specific direction or be constructed and operated in a specific direction, so it cannot be understood as a limitation on the protection scope of the present application; the direction words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0058] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Well, the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0059] In addition, it needs to be explained that the use of "first", "second" and the like words to limit the parts, only for the convenience of the corresponding parts for the distinction, such as no other declaration, the above words have no special meaning, therefore can not be understood as the restriction of the scope of protection of the utility model.

[0060] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An observation device for a storage tank, characterized in that, The application relates to a storage tank observation device, comprising: an observation window structure (20) arranged on a tank body (10) of a storage tank; a cleaning member (30) rotatably arranged in the tank body (10), the cleaning member (30) being used for cleaning the observation window structure (20); a photoelectric sensor (40) arranged on one side of the observation window structure (20), the photoelectric sensor (40) being capable of detecting the cleanliness of the observation window structure (20); an illuminating member (50) arranged on one side of the observation window structure (20) and irradiating the observation window structure (20).

2. The storage tank observation device according to claim 1, wherein: the storage tank observation device further comprises a driving motor (60) arranged on the observation window structure (20), a motor shaft (62) of the driving motor (60) being rotatable to drive the cleaning member (30) to rotate; the photoelectric sensor (40) is connected to a motor shell (61) of the driving motor (60), and / or the illuminating member (50) is connected to the motor shell (61) of the driving motor (60).

3. The viewing device for a storage tank of claim 2, wherein, the observation window structure (20) comprises a connecting ring (21) connected to the tank body (10) and a transparent plate (22) arranged in the connecting ring (21), the cleaning member (30) is used for cleaning the transparent plate (22), and the storage tank observation device further comprises a support rod (71) connected between the motor shell (61) of the driving motor (60) and the connecting ring (21).

4. The viewing device of claim 3, wherein, the observation window structure (20) further comprises a convex ring (23) arranged at an observation opening of the tank body (10), the convex ring (23) is provided with a first threaded structure, the connecting ring (21) is provided with a second threaded structure, and the first threaded structure is capable of being threadedly matched with the second threaded structure.

5. The viewing device for a storage tank of claim 3, wherein, the support rod (71) is in plurality, first ends of the plurality of support rods (71) are arranged on the motor shell (61) at intervals, and second ends of the plurality of support rods (71) are arranged at intervals along the circumference of the connecting ring (21).

6. The viewing device of claim 2, wherein, the photoelectric sensor (40) and the illuminating member (50) are located on the side of the observation window structure (20) away from the tank body (10), the photoelectric sensor (40) is located on the side of the illuminating member (50) away from the observation window structure (20), and / or the photoelectric sensor (40) and the illuminating member (50) are arranged at intervals along the circumference of the motor shaft (62).

7. The viewing device of claim 1, wherein, the photoelectric sensor (40) and the observation window structure (20) have a first preset gap, and / or the illuminating member (50) and the observation window structure (20) have a second preset gap.

8. The viewing device of claim 1, wherein, the storage tank observation device further comprises a driving motor (60) and a sleeve (72), a motor shaft (62) of the driving motor (60) penetrates the observation window structure (20) and drives the cleaning member (30) to rotate, and the sleeve (72) is arranged on the observation window structure (20) and is sleeved on the motor shaft (62).

9. The viewing device of claim 1, wherein, The observation device of the storage tank further comprises a driving motor (60) and a control element, the photoelectric sensor (40) is in signal connection with the control element, the control element is in control connection with the driving motor (60), and a motor shaft (62) of the driving motor (60) rotates to drive the cleaning element (30) to rotate.

10. A storage tank comprising a tank body (10) and a viewing device provided at a viewing port of the tank body (10), characterized in that, The observation device is the observation device of the storage tank according to any one of claims 1 to 9.

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