Lower open caisson observation window and assembly thereof
By introducing a scraping mechanism and a bladder system into the observation window of the sump, the problem of cleaning the observation window under high underwater pressure is solved by using water pressure and gas expansion to clean the sediment, achieving efficient and long-term cleaning results.
Patent Information
- Application Number
- CN202512023728.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-02-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing observation windows in the sinkhole are difficult to clean effectively under the high pressure of underwater conditions, resulting in deposits on the mirror surface of the observation window affecting observation and requiring the cleaning cycle to be shortened, which cannot meet the needs of long-term use.
A sinkhole observation window assembly was designed, including a main frame, glass, a scraping mechanism, and a bladder system. The scraper removes sediment by water pressure and the gas expansion of the bladder cleans the sediment, achieving efficient cleaning of a large area in one go.
It enables efficient cleaning of the observation window under high-pressure underwater conditions, avoids sediment buildup, extends the cleaning cycle, and meets the high-pressure resistance and cleaning requirements for long-term use.
Smart Images
Figure CN121539192A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of observation windows, in particular to a sinking well observation window and an assembly thereof. BACKGROUND
[0002] The sinking well is an underground structure that can be used to collect rainwater or carry out sedimentation treatment of sewage. It is built of reinforced concrete, and an observation window is also reserved thereon for observing the inside sedimentation and other conditions. Since the observation window needs to be deep into the well, it needs to meet the underwater high pressure requirement. Before pouring the sinking well, the observation window is welded to the steel reinforcement framework together to meet the strength requirement, and is embedded in the sinking well with the subsequent concrete pouring work. The application proposes a sinking well observation window that can meet the underwater high pressure requirement and has multiple forms to meet the site requirements. At present, the sinking well for sedimentation usually needs to be cleaned once between 3-6 months to dredge and prevent a large amount of bacteria from breeding. It is difficult to clean the window when the liquid level is high. At the end of the period, the deposition is accumulated at the bottom of the water-tight observation window frame, and the attachments are attached to the mirror surface, which affects the observation, and the cleaning period is sometimes advanced due to the observation window.
[0003] The application proposes a sinking well observation window and an assembly thereof that can withstand high pressure in the sinking well and also perform one-time descaling to eliminate the influence of deposition attachment and accumulation. SUMMARY
[0004] To solve the problems proposed in the background, the application provides a sinking well observation window and an assembly thereof.
[0005] To achieve the above-mentioned purpose, the application provides the following technical solution: a sinking well observation window and an assembly thereof, comprising a main frame, further comprising longitudinally and transversely arranged plug-in plates arranged on the outer periphery of the main frame; a square tube welded on the transverse nodes of the plug-in plates, the plug-in plates, the square tube and the main frame being welded on the steel reinforcement framework and embedded in the concrete; a glass sleeve set in the inside of the main frame, and a gasket being arranged between the glass and the inner wall of the main frame; an angle code pressing plate and a flange being arranged on both sides of the glass for limiting and fixing the glass, wherein the flange is fixed by screws punched from the outer periphery of the main frame; and the shape of the observation window is circular or polygonal.
[0006] Preferably, a descaling mechanism is arranged on the side of the glass facing the sinking well, the descaling mechanism is movably installed on the observation window body and can vertically slide up and down, a connecting straight pipe is further welded below the observation window body, the top opening of the connecting straight pipe is in communication with the inner wall of the observation window body, and the bottom end of the descaling mechanism is inserted into the connecting straight pipe and can vertically slide therein. The connecting straight pipe is connected to the outside of the sinking well through an L-shaped pipe and is in communication with the external environment.
[0007] Preferably, the dirt scraping mechanism comprises a vertical rod, a piston fixed to the bottom end of the vertical rod, and a scraping strip connected to the top end of the vertical rod through a cantilever, the scraping strip being attached to the mirror surface of the glass. The piston is in interference fit with the inner wall of the connecting straight pipe.
[0008] Preferably, the scraping strip comprises a PE plate fixed to the cantilever through a pin and a rubber strip installed on the PE plate, the PE plate being provided with two portions for clamping the rubber strip in the middle and fixed through the pin. A handle is fixedly installed at the top end of the vertical rod.
[0009] Preferably, the L-shaped pipe is connected to an external water tank arranged in the external environment, and the external water tank is installed on a wall. An end portion of the L-shaped pipe is fixedly connected to a hand wheel valve arranged in the internal cavity of the external water tank, and an operating rod of the hand wheel valve is connected to extend upward through the external water tank to the outside and is connected to a hand wheel.
[0010] Preferably, the internal cavity of the external water tank is connected to the bottom of the inner wall of the observation window body upward through an air pipe, a one-way valve is arranged at the top opening of the air pipe, the one-way valve is in a downward-to-upward conduction direction, a rubber bag is also attached and installed on the lower side of the inner wall of the observation window body, and the lower surface of the rubber bag is connected to the inside of the air pipe. The top surface of the rubber bag is a one-way air-permeable rubber film in an outward conduction direction. A plastic valve is arranged at the connection opening of the air pipe and the internal cavity of the external water tank.
[0011] Preferably, the rubber bags are symmetrically arranged on both sides of the connecting straight pipe, and the air pipe is provided with two air pipes respectively connected to the symmetrically arranged rubber bags on both sides of the connecting straight pipe.
[0012] Preferably, the bottom end of the connecting straight pipe is provided with a step for limiting the maximum displacement of the piston downward.
[0013] Preferably, the bottom end of the connecting straight pipe is also provided with a step, and the opening of the step is blocked by a cover.
[0014] Preferably, the longest extension of the scraping strip is the same as the diameter of the observable surface of the glass.
[0015] Compared with the prior art, the beneficial effects of the present application are as follows: The observation window is welded in the skeleton when the sinking well steel reinforcement framework is constructed, the deviation of the main frame and the corner code pressing plate is 0-1 mm, the deviation of the twist degree (the distance of the diagonal line midpoint) is not more than 1 mm, and the screws are uniformly distributed on the surface. Then, the pouring formwork is built to pour concrete, and the observation window of the sinking well can meet the water pressure requirement after solidification. The form of the observation window can be freely selected according to the requirement of the scene, and the observation window can be circular or polygonal, and the specific form can be set as required.
[0016] The piston is pressed downward by the water pressure in the sinking well, so that the whole dirt scraping mechanism is driven to descend, and the glass surface dirt is scraped in the process, and the scraped dirt is collected at the bottom of the main frame. At the same time, when the piston descends, the space above the piston in the connecting straight pipe is opened, which is used for sucking the precipitate inside the observation window body into the inside, so that the accumulation phenomenon does not appear below the inner wall of the observation window body, and one-time large-area efficient cleaning can be realized.
[0017] The water discharged from the connecting straight pipe into the external water tank will cause the liquid level change therein, and the gas therein will enter the skin bag along the gas pipe. The skin bag will swell slightly, and then the gas will form bubbles and be discharged outward from the micro-holes on the surface. In the process of the skin bag swelling, the precipitate covered thereon will be fluctuated together. Since the skin bag is in an arc shape, the precipitate on the surface will be gathered to the middle part after swelling, so as to be sucked into the connecting straight pipe opening in the middle part of the observation window body. At the same time, the skin bag surface will spray gas, push away the precipitate adhered to the surface, further disturb the precipitate to make it enter the connecting straight pipe, and reduce the accumulation phenomenon of the precipitate. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a cross-sectional structure diagram of the observation window; Figure 2 It is a structure front view of the square observation window of the application; Figure 3 It is a layout schematic diagram of the dirt scraping mechanism, the connecting straight pipe, the L pipe and the external water tank; Figure 4 It is a layout front view schematic diagram of the dirt scraping mechanism, the connecting straight pipe, the L pipe and the external water tank; Figure 5 It is a layout side view schematic diagram of the dirt scraping mechanism, the connecting straight pipe, the L pipe and the external water tank; Figure 6 It is a cross-sectional view of the connecting straight pipe and the gas pipe; Figure 7 Part A of the present application Figure 6 is an enlarged schematic view of the present application; Figure 8 is a sectional view of the external water tank of the present application; Figure 9 is a structural schematic view of the scale scraping mechanism of the present application.
[0019] In the figure: 100, observation window body; 101, main frame; 102, plugboard; 103, square tube; 104, corner code pressing plate; 105, gasket; 106, glass; 107, flange; 108, screw; 200, scale scraping mechanism; 201, vertical rod; 202, piston; 203, scraping strip; 2031, PE plate; 2032, rubber strip; 204, handle; 205, cantilever; 300, connecting straight pipe; 301, step; 400, L-shaped pipe; 500, external water tank; 501, hand wheel valve; 502, plastic valve; 600, air pipe; 601, one-way valve; 700, bladder. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to 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 of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0021] As shown in Figures 1 to 2 , the present application provides a sunken well observation window, which comprises a main frame 101, and further comprises plugboards 102 arranged in a longitudinal and transverse staggered manner on the outer periphery of the main frame 101; a square tube 103 welded on the staggered nodes of the plugboards 102, the plugboards 102 and the square tube 103 being welded on a reinforced framework together with the main frame 101 and being cast and buried in concrete; a glass 106 sleeved inside the main frame 101, and a gasket 105 being arranged between the glass 106 and the inner wall of the main frame 101; a corner code pressing plate 104 and a flange 107, which are respectively arranged on both sides of the glass 106 for limiting and fixing the glass 106, wherein the flange 107 is fixed by screws punched from the outer periphery of the main frame 101; and the observation window is circular or polygonal in shape.
[0022] The above scheme is the setting form of the sinking well observation window of the present application, which is welded inside the framework during the construction of the sinking well steel framework. The weld is required to be beautiful, and there should be no welding problems such as missing welding and slag inclusion. The deviation of the main frame 101 and the corner code pressing plate 104 is 0-1 mm, and the twist degree (the distance between the midpoints of the diagonals) deviation is not more than 1 mm, and the screws 108 are uniformly distributed on the surface. Then the pouring formwork is built to carry out concrete pouring work. After solidification, the sinking well observation window of the present application can meet the 15-meter water pressure requirement.
[0023] The form of the observation window is freely selected according to the needs of the site, which can be circular, or can be set as a polygon, such as Figure 2 The square form shown. Except for the change in appearance, the other construction and setting forms inside are the same as those of the circular window.
[0024] As shown in Figure 3 , Figure 4 and Figure 6 , the glass 106 side facing the sinking well is provided with a scale removal mechanism 200, which is movably mounted on the observation window body 100 and can vertically slide up and down. The lower side of the observation window body 100 is also welded with a connecting straight pipe 300, the top end opening of the connecting straight pipe 300 is in communication with the inner wall of the observation window body 100, and the bottom end of the scale removal mechanism 200 is inserted into the connecting straight pipe 300 and can vertically slide inside it. The connecting straight pipe 300 is connected to the outside of the sinking well through an L-shaped pipe 400 and is in communication with the external environment.
[0025] The scale removal mechanism 200 includes a vertical rod 201, a piston 202 fixed to the bottom end of the vertical rod 201, a scale bar 203 connected to the top end of the vertical rod 201 through a cantilever 205, and the scale bar 203 is attached to the mirror surface of the glass 106. The piston 202 is interference fit in the inner wall of the connecting straight pipe 300.
[0026] In the above scheme, the scale removal mechanism 200 is set outside the glass for cleaning the glass. The scale removal mechanism 200 is initially set at the top of the observation window body 100, which can vertically slide down along the connecting straight pipe 300, so as to scrape off and clean the impurities deposited on the surface of the glass 106.
[0027] The scraping mechanism 200 comprises a vertical rod 201 extending downward into the connecting straight pipe 300, the top end of the vertical rod 201 is connected with a scraping strip 203, the scraping strip 203 is attached to the surface of the glass 106 for scraping off the impurities and dirt on the surface of the glass 106, and the bottom end of the vertical rod 201 is connected with a piston 202 which is in interference fit on the inner wall of the connecting straight pipe 300. The piston 202 is driven downward by the water pressure in the sinking well, thereby driving the whole scraping mechanism 200 to descend, and the scraping strip 203 scrapes off the dirt on the surface of the glass 106 in the process. At the same time, when the piston 202 descends, the space in the connecting straight pipe 300 above the piston 202 is opened, which is used for sucking the sediment scraped off and below the inner side of the observation window body 100 into the inside, so that the accumulation phenomenon does not occur below the inner wall of the observation window body 100. It can realize one-time large-area efficient cleaning.
[0028] In the initial state, the cavity below the piston 202 in the connecting straight pipe 300 can be filled with water for pressure balance between the inside and outside of the piston 202, and the port of the connecting straight pipe 300 is communicated with the external environment. After the port is opened, the pressure inside and outside the connecting straight pipe 300 is unbalanced, and the water below the piston 202 is discharged as the piston 202 moves downward.
[0029] As shown in Figure 9 The scraping strip 203 comprises a PE plate 2031 fixed on the cantilever 205 by a pin and a rubber strip 2032 installed on the PE plate 2031, and the PE plate 2031 is provided with two PE plates 2031 clamping the rubber strip 2032 in the middle and fixed by a pin; the top end of the vertical rod 201 is fixedly installed with a handle 204.
[0030] The scraping strip 203 comprises two parts of the PE plate 2031 and the rubber strip 2032, the PE plate 2031 is used to maintain the elastic form of the rubber strip 2032, and the rubber strip 2032 is clamped between the two PE plates 2031 and changes synchronously with the shape of the two rubber strips 2032. When the PE plate 2031 is attached to the top of the inner periphery of the corner code pressing plate 104, the PE plate 2031 elastically deforms to form a circular arc on the inner periphery of the corner code pressing plate 104, thereby greatly reducing the interference with the field of view. As the scraping strip 203 moves downward to scrape off the deposited dirt on the mirror surface, due to its elastic recovery, the two ends of the scraping strip 203 will extend along the inner edge of the corner code pressing plate 104, changing with the chord distance of different heights, to ensure that the surface of the glass 106 can be fully covered and scraped off. When the scraping strip 203 moves to the bottom, it will deform again to attach to the bottom inner edge of the corner code pressing plate 104, reducing the interference with the field of view.
[0031] The handle 204 provided thereon is used for resetting the scraping mechanism 200.
[0032] As shown in Figure 8As shown, the L tube 400 is connected to the outside water tank 500 which is arranged outside the environment, and the outside water tank 500 is installed on the wall; the end of the L tube 400 is fixedly connected to the hand wheel valve 501 arranged in the inner cavity of the outside water tank 500, and the operating rod of the hand wheel valve 501 is connected to extend upwards through the outside water tank 500 to the outside and is connected to the hand wheel.
[0033] The straight tube 300 and the L tube 400 are connected, and the port of the L tube 400 extends to the outside environment through the wall and is connected to the outside water tank 500, the hand wheel valve 501 is installed at the end of the L tube 400, and after the hand wheel valve 501 is turned on, the straight tube 300 and the L tube 400 are connected to the inside of the outside water tank 500, which is used to discharge the water below the piston 202 in the straight tube 300 to the inner cavity of the outside water tank 500. The opening amplitude of the hand wheel valve 501 can be controlled to adjust the descending speed of the piston 202, so as to adjust the downward scraping speed of the scraping strip 203.
[0034] As shown in the drawings, Figure 8 The inner cavity of the outside water tank 500 is connected to the bottom of the inner wall of the observation window body 100 through the air pipe 600, a one-way valve 601 is arranged at the top end opening of the air pipe 600, the one-way valve 601 is in a downward-to-upward direction, a rubber bag 700 is also installed on the lower side of the inner wall of the observation window body 100, and the lower surface of the rubber bag 700 is connected to the inside of the air pipe 600; the top surface of the rubber bag 700 is a one-way air-permeable film in an outward direction; and a plastic valve 502 is arranged at the connection port of the air pipe 600 and the inner cavity of the outside water tank 500.
[0035] The rubber bag 700 is symmetrically arranged on both sides of the straight tube 300, and the air pipe 600 is provided with two air pipes respectively connected to the rubber bags 700 symmetrically arranged on both sides of the straight tube 300.
[0036] The water discharged from the straight tube 300 to the outside water tank 500 will cause the change of the liquid level, and since the outside water tank 500 is internally sealed, the space of the internal gas will be compressed. Since the air pipe 600 is connected to the bottom of the observation window body 100 and is connected to the inside of the rubber bag 700, and the other end is connected to the plastic valve 502 in the inside of the outside water tank 500, opening the plastic valve 502 allows the compressed gas therein to enter the rubber bag 700 along the air pipe 600. The rubber bag 700 will first expand a small amount, and then the gas will form bubbles and be discharged outwardly from the micro-holes on the surface.
[0037] During the inflation of the skin 700, the precipitate on the surface of the skin 700 will be fluctuated together. Because the skin 700 is in the shape of an arc, the precipitate on the surface of the skin 700 will be gathered to the middle part after inflation, and then be sucked into the opening of the connecting straight pipe 300 in the middle part of the observation window main body 100. At the same time, the surface of the skin 700 will spray gas to push away the precipitate adhered to the surface, further disturb the precipitate to drive it into the connecting straight pipe 300, and reduce the accumulation of the precipitate.
[0038] The person skilled in the art can also adaptively design the form of the skin 700. For example, when the skin 700 is suitable for a square observation window bottom, because the observation window bottom is in a horizontal state, the initial thickness of the two ends of the skin 700 can be too high, and the thickness of the part close to the connecting straight pipe 300 can be reduced to form a concave layout. After inflation, the high-low-two-end state will be intensified, so that the precipitate is gathered to the middle part of the connecting straight pipe 300.
[0039] As shown in Figure 6 , the bottom end of the connecting straight pipe 300 is provided with a step for limiting the maximum displacement of the piston 202 downward. When the piston 202 moves downward, it will be finally limited by the step, and at this time, the scraper 203 also reaches the lower part of the observation window main body 100 to complete the cleaning of the mirror surface, and the space in the connecting straight pipe 300 above the piston 202 completes the collection of the precipitate.
[0040] As shown in Figure 4 and Figure 5 , the bottom end of the connecting straight pipe 300 is also provided with a step 301, and the opening of the step 301 is blocked by a cover.
[0041] When the piston 202 descends to the lowest position, it is below the step 301. After the cleaning period in the sink, the cover can be opened to clean the precipitate in it.
[0042] As shown in Figure 6 , the longest extension of the scraper 203 is the same as the diameter of the observable surface of the glass 106. Thus, it can be ensured that the cleaning range can cover the entire observable mirror surface.
[0043] Working principle and use process of the present application: Firstly, the flange 107 is installed into the main frame 101 by screw 108, then the main frame 101 is erected and welded to the reinforced frame as a whole, and the straight pipe 300, L pipe 400 and air pipe 600 are erected and welded to the reinforced frame, the main frame 101 is embedded into the interior after pouring the concrete into the pouring formwork, the formwork is removed after the concrete solidifies, the gasket 105, glass 106 and angle code pressing plate 104 are installed into the interior of the main frame 101. After the observation window is installed, the related components are installed, the bottom of the skin bag 700 is connected with the port of the air pipe 600 and is bonded into the main frame 101, and the scale removing mechanism 200 is correctly installed onto the observation window main body 100.
[0044] When there is more dirt accumulated on the observation window, the well observation chamber is lowered on one side, the hand wheel valve 501 is opened, and the water below the piston 202 in the connecting straight pipe 300 is discharged to the external water tank 500, as the liquid level in the external water tank 500 rises, the gas therein enters the skin bag 700 below the main frame 101 through the air pipe 600 after the plastic valve 502 is opened, and the dirt accumulated on the skin bag 700 is disturbed, and the dirt on the inner surface of the glass 106 is scraped downward by the scraping strip 203. The piston 202 descends and simultaneously opens the upper space of the connecting straight pipe 300, so that the sediment is sucked into the interior for collection, reducing the accumulation and adhesion on the observation window main body 100.
[0045] It is to be understood that the terminology used herein such as first and second, and the like, is merely for distinguishing one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0046] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the spirit and scope of the application, which are defined by the appended claims and their equivalents.
Claims
1. A sinking shaft observation window comprising a main frame (101), characterized in that: It also includes the plugboard (102) arranged on the outer periphery of the main frame (101) in a longitudinal and transverse staggered manner; The square tube (103) is welded on the staggered nodes of the plugboard (102), and the plugboard (102) and the square tube (103) are welded on the steel reinforcement frame together with the main frame (101) and are embedded in the concrete; The glass (106) is sleeved inside the main frame (101), and a gasket (105) is arranged between the glass (106) and the inner wall of the main frame (101); The angle code pressing plate (104) and the flange (107) are arranged on both sides of the glass (106) for limiting and fixing the glass (106), wherein the flange (107) is fixed by screws punched from the outer periphery of the main frame (101); The shape of the observation window is circular or polygonal.
2. An assembly for a caisson viewing window as claimed in claim 1, wherein: The glass (106) is provided with a scale removal mechanism (200) on the side facing the sinking well, which is movably mounted on the observation window body (100) and can vertically slide up and down. The lower side of the observation window body (100) is also welded with a connecting straight pipe (300), the top opening of the connecting straight pipe (300) is communicated with the inner wall of the observation window body (100), and the bottom end of the scale removal mechanism (200) is inserted into the connecting straight pipe (300) and can vertically slide inside it. The connecting straight pipe (300) is communicated to the outside of the sinking well through an L-shaped pipe (400) and is communicated with the external environment.
3. The caisson viewing window assembly of claim 2, wherein: The scale removal mechanism (200) includes a vertical rod (201), a piston (202) fixed to the bottom end of the vertical rod (201), a scraper (203) connected to the top end of the vertical rod (201) through a cantilever (205), and the scraper (203) is attached to the mirror surface of the glass (106). The piston (202) is interference fit in the inner wall of the connecting straight pipe (300).
4. The caisson viewing window assembly of claim 3, wherein: The scraper (203) includes a PE plate (2031) fixed to the cantilever (205) by a pin and a rubber strip (2032) installed on the PE plate (2031), and the PE plate (2031) is provided with two rubber strips (2032) clamped in the middle and fixed by a pin. A handle (204) is fixedly installed at the top end of the vertical rod (201).
5. A sink pit viewing window assembly according to any one of claims 2 to 4, wherein: The L-shaped pipe (400) is communicated with an external water tank (500) arranged in the external environment, and the external water tank (500) is installed on the wall; The end of the L-shaped pipe (400) is fixedly communicated with a hand wheel valve (501) arranged in the inner cavity of the external water tank (500), and the operating rod of the hand wheel valve (501) is connected to extend upward through the external water tank (500) to the outside and is connected with a hand wheel.
6. The caisson viewing window assembly of claim 5, wherein: The inner cavity of the external water tank (500) is communicated upward with the bottom of the inner wall of the observation window body (100) through an air pipe (600), a one-way valve (601) is arranged at the top opening of the air pipe (600), the one-way valve (601) is in a downward-to-upward conduction direction, and a skin bag (700) is also attached and installed on the lower side of the inner wall of the observation window body (100), the lower surface of the skin bag (700) is communicated with the inside of the air pipe (600); The top surface of the skin bag (700) is a one-way air-permeable skin film in an outward conduction direction; A plastic valve (502) is arranged at the communication opening of the air pipe (600) and the inner cavity of the external water tank (500).
7. The caisson viewing window assembly of claim 6, wherein: The skin bag (700) is symmetrically laid on both sides of the connecting straight pipe (300), and the air pipe (600) is provided with two air pipes respectively communicated with the symmetrically arranged skin bags (700) on both sides of the connecting straight pipe (300).
8. The submersible well viewing window assembly of claim 3, wherein: The bottom end of the connecting straight pipe (300) is provided with a step for limiting the maximum displacement of the piston (202) downward.
9. The submersible well viewing window assembly of claim 3, wherein: The bottom end of the connecting straight pipe (300) is also provided with a step (301), and the opening of the step (301) is blocked by a cover.
10. The submersible well viewing window assembly of claim 4, wherein: The longest extension of the scraping strip (203) is the same as the diameter of the observable surface of the glass (106).