Concealed Electric Sealing Window for Low-Temperature Grain Storage

Abstract

This utility model relates to a concealed, electrically operated, airtight window specifically designed for low-temperature grain storage, belonging to the technical field of grain storage equipment. It includes: a window frame, fixedly installed on the wall of a grain warehouse; a window sash, movably connected to the window frame via hinges, allowing the sash to rotate relative to the frame to open and close the window; a sealing assembly, disposed around the sash and on the window frame, forming a seal between the sash and frame when the sash is closed; an electrically driven assembly, fixedly installed on the window frame, having a drive unit that is connected to the sash; and a locking assembly, including a latch and a latch, the latch being on the sash and the latch on the frame, locking the sash when it is closed. This invention addresses the technical problem that existing electrically operated lifting windows cannot meet the temperature stability and high sealing requirements of grain silos used for low-temperature grain storage, necessitating a more reliable sealing solution and structure.

Description

Technical Field

[0001] This utility model belongs to the technical field of special equipment for grain storage, and specifically relates to a concealed electric airtight window for low-temperature grain storage. Background Technology

[0002] Airtight windows for low-temperature grain storage are one of the core supporting equipment in low-temperature grain storage systems. Their function is directly related to the stability of the low-temperature environment in the grain depot, the safety of grain storage operations, and the efficiency of intelligent management. Furthermore, due to the special storage environment of grain depots and the technical requirements of low-temperature grain storage, airtight windows for low-temperature grain storage need to maintain a stable controlled atmosphere and require active control via a remote monitoring system. Additionally, the manufacturing process of steel plate windows can cause a certain degree of bulging and delamination.

[0003] Patent CN113944404A discloses a lift-up window with a transmission assist mechanism, including a window frame, a movable window sash, and a transmission assist mechanism. The transmission assist mechanism is installed inside the window frame and includes a transmission mechanism and an assist mechanism. The transmission mechanism includes a motor, a lead screw, a working output movement mechanism, and a synchronizer. The motor is connected to one of the lead screws and drives it to rotate. A working output movement mechanism is engaged on each of the two lead screws, and the working output movement mechanism moves linearly along the lead screw. The synchronizer is installed at the upper or lower end of the movable window sash and is connected to the other end of the two lead screws. The synchronizer makes the working output movement mechanisms on both sides move in the same direction. An assist mechanism is connected to the lead screw inside at least one side of the window frame, and the assist mechanism provides assistance to the lead screw. The movable window sash is fixed on the working output movement mechanism.

[0004] The existing technology has at least the following problems in its use:

[0005] Existing electric lifting windows cannot meet the temperature stability and high sealing requirements of grain silos used for low-temperature grain storage, and a more reliable sealing solution and structure are needed. Utility Model Content

[0006] This utility model provides a concealed electric airtight window specifically for low-temperature grain storage, which solves the technical problem that existing electric lifting windows cannot meet the temperature stability and high sealing performance of grain silos used for low-temperature grain storage, and requires a more reliable sealing solution and structure.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A concealed, electrically operated, airtight window specifically designed for low-temperature grain storage includes: a window frame, which is fixedly installed on the wall of a grain warehouse; a window sash, which is movably connected to the window frame via hinges and can rotate relative to the window frame to open and close the window; and a sealing assembly, disposed around the window sash and on the window frame, which provides both active and passive sealing to the window sash and frame when the window sash is closed; the sealing assembly includes: an O-ring sealing strip disposed around the window sash for passive sealing; and an inflatable sealing strip disposed on the window frame for active sealing, which fits tightly against the O-ring sealing strip when the window sash is closed.

[0009] Furthermore, the locking assembly includes: a latch, disposed on the window sash; and a latch, disposed on the window frame. When the window sash is closed, the latch is inserted into the latch to lock the window sash.

[0010] Furthermore, it also includes an electric drive assembly, which includes: a drive motor, fixedly mounted on the window frame; a transmission screw, connected to the output shaft of the drive motor, the drive motor driving the transmission screw to rotate; and a slider, which is threadedly engaged with the transmission screw and rotatably connected to the window sash, driving the slider to move along the transmission screw.

[0011] Furthermore, the window sash adopts a multi-layer composite structure, including an outer steel plate, a middle insulation layer and an inner fireproof board. The middle insulation layer is made of high-pressure injected polyurethane material, and the inner fireproof board is made of aerogel material.

[0012] Furthermore, the locking assembly also includes a clutch mechanism disposed between the latch and the window sash, used to control the extension and retraction of the latch. The clutch mechanism is linked to the electric drive assembly. When the window sash is closed, the clutch mechanism drives the latch to insert into the latch; when the window sash is opened, the clutch mechanism first drives the latch to disengage from the latch, and then the electric drive assembly drives the window sash to open.

[0013] Furthermore, the window sash and the slider are connected by a connecting rod. One end of the connecting rod is hinged to the slider, and the other end is rotatably connected to the window sash. A buffer spring is provided at the hinge point between the connecting rod and the slider.

[0014] Furthermore, both the window frame and the window sash have beveled structures on their sealing contact surfaces, which allow the O-ring sealing strip and the inflatable sealing strip to form a line seal when they come into contact.

[0015] Furthermore, a controller is provided on the window frame. The controller is electrically connected to the drive motor and the air pump and is used to control the working state of the electric drive assembly and the inflatable sealing strip. The controller can automatically adjust the opening and closing state of the window sash and the sealing pressure of the inflatable sealing strip according to the temperature and humidity inside the grain warehouse.

[0016] This utility model provides a concealed, electrically operated, airtight window specifically for low-temperature grain storage, with the following advantages:

[0017] The window sash features automated opening and closing and sealing through a concealed electric drive and locking linkage structure; efficient sealing in low-temperature grain storage environments is achieved through active and passive sealing; and thermal insulation, fire resistance, and operational stability are ensured through a composite structure and buffer design. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a concealed, electrically operated airtight window for low-temperature grain storage provided in an embodiment of this utility model;

[0020] Figure 2 A schematic diagram of the structure of the low-temperature grain storage special concealed electric airtight window after removing part of the window frame, as provided in this embodiment of the utility model.

[0021] Figure 3 for Figure 2 Enlarged view at point A1;

[0022] Figure 4 for Figure 2 Enlarged view at point B1;

[0023] Figure 5 A schematic diagram of the sealing cross-section of the concealed electric airtight window for low-temperature grain storage provided in this embodiment of the utility model;

[0024] Figure 6 A top view of the concealed, electrically operated airtight window for low-temperature grain storage provided in an embodiment of this utility model;

[0025] Figure 7 for Figure 6 Enlarged view of point C1;

[0026] Figure 8A schematic diagram of the installation structure of a partially concealed electric airtight window for low-temperature grain storage provided in an embodiment of this utility model, showing the installation of the window frame and the electric drive assembly.

[0027] Figure 9 for Figure 8 Enlarged view of point D1 in the middle.

[0028] In the diagram: 10-Window frame; 20-Window sash; 201-Outer steel plate; 202-Intermediate insulation layer; 203-Inner fireproof board; 204-Polyurethane material; 205-Aerogel material; 30-Sealing component; 301-O-ring sealant; 302-Inflatable sealant; 40-Electric drive component; 401-Drive motor; 402-Drive screw; 403-Slider; 50-Locking component; 501-Lock tongue; 502-Lock catch; 503-Clutch mechanism; 601-Connecting rod; 602-Buffer spring; 603-Sloping structure. Detailed Implementation

[0029] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0030] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to welding, bolting, or riveting; they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Example:

[0034] like Figures 1 to 9 As shown, this embodiment provides a concealed, electrically operated, airtight window specifically for low-temperature grain storage, comprising: a window frame 10, which is fixedly installed on the wall of a grain warehouse; a window sash 20, which is movably connected to the window frame 10 via hinges, and can rotate relative to the window frame 10 to open and close the window; a sealing assembly 30, which is disposed around the window sash 20 and on the window frame 10, and forms a seal between the window sash 20 and the window frame 10 when the window sash 20 is closed; an electric drive assembly 40, which is fixedly installed on the window frame 10 and has a drive unit, which is connected to the window sash 20 in a transmission manner; and a locking assembly 50, which includes a latch 501 and a latch 502, wherein the latch 501 is disposed on the window sash 20 and the latch 502 is disposed on the window frame 10, and when the window sash 20 is closed, the latch 501 is inserted into the latch 502 to lock the window sash 20.

[0035] In this embodiment, the window frame 10 and window sash 20 are made of aluminum profiles with rounded corners (radius transitions) around their perimeter, improving sealing fit and structural safety. The window frame 10 integrates a sealed cavity to conceal the electric drive assembly 40 and locking assembly 50, achieving a "hidden" structural design. The hinges are made of stainless steel and are installed in a concealed manner, adapting to the rounded corner contours of the window frame 10 / window sash 20 to ensure overall aesthetic integrity. The drive unit of the electric drive assembly 40 is connected to the transmission screw 402 via a bevel gearbox, enabling a 90° power reversal to fit the compact layout within the window frame 10.

[0036] Furthermore, the sealing assembly 30 includes an O-ring sealing strip 301 disposed around the window sash 20; and an inflatable sealing strip 302 disposed on the window frame 10. When the window sash 20 is closed, the O-ring sealing strip 301 and the inflatable sealing strip 302 are tightly fitted together.

[0037] In this embodiment, the O-ring sealing strip 301 is annular and is embedded entirely into the annular groove on the edge of the window sash 20. The groove depth is slightly less than the diameter of the strip, causing the outer side of the strip to protrude slightly from the surface of the window sash 20. The inflatable sealing strip 302 is installed on the corresponding plane where the window frame 10 and the window sash 20 contact. Its cross-section is flat, and it has an internal air cavity. It is connected to a miniature air pump installed inside the cavity of the window frame 10 through a thin tube. When the window sash 20 is gradually closed, the O-ring sealing strip 301 first contacts the inflatable sealing strip 302 and is slightly compressed. After the window sash 20 is completely closed, the air pump is activated to inflate the inflatable sealing strip 302, causing it to expand and tightly wrap around the O-ring sealing strip 301, forming a double sealing structure.

[0038] Furthermore, the electric drive assembly 40 includes a drive motor 401, which is fixedly mounted on the window frame 10; a transmission screw 402, which is connected to the output shaft of the drive motor 401, and the drive motor 401 drives the transmission screw 402 to rotate; and a slider 403, which is threadedly engaged with the transmission screw 402 and is rotatably connected to the window sash 20, thereby driving the slider 403 to move along the transmission screw 402.

[0039] In this embodiment, the drive motor 401 is horizontally fixed to one end of the window frame 10 cavity via a metal bracket, with its output shaft facing the inside of the window frame 10. One end of the transmission screw 402 is connected to the output shaft of the drive motor 401 via a coupling, and the other end is fixed to the other end of the window frame 10 cavity via a bearing seat, keeping the screw horizontal. The slider 403 has a thread on its inner side that matches the transmission screw 402, and its outer side engages with the guide rail of the window frame 10 cavity via a protruding structure, restricting the slider 403 from rotating with the screw. When the drive motor 401 rotates forward, the transmission screw 402 drives the slider 403 to move closer to the motor, pulling the window sash 20 open via the connecting structure; when the motor rotates in reverse, the slider 403 moves in the opposite direction, pushing the window sash 20 close.

[0040] Furthermore, the window sash 20 adopts a multi-layer composite structure, including an outer steel plate 201, a middle insulation layer 202 and an inner fireproof board 203. The middle insulation layer 202 is made of high-pressure injected polyurethane material 204, and the inner fireproof board 203 is made of aerogel material 205.

[0041] In this embodiment, the outer steel plate 201 of the window sash 20 is an integrally formed structure, covering the outer surface of the window sash 20, and its inner side is bonded to the fireproof board of the intermediate layer with an adhesive. The inner fireproof board 203 is arranged parallel to the outer steel plate 201, with a certain gap between them to form a cavity. During the assembly process, the outer steel plate 201 and the inner fireproof board 203 are first fixed to form a frame, and then liquid polyurethane material 204 is injected into the cavity under high pressure through the reserved injection port. After it foams and cures, it forms a complete intermediate insulation layer 202, filling the entire cavity and bonding tightly to the inner and outer layers. The fireproof board made of aerogel material 205 is bonded to the inner side of the inner steel plate and fixed with a high-temperature resistant adhesive to form a composite structure with both insulation and fireproof functions.

[0042] Furthermore, the locking assembly 50 also includes a clutch mechanism 503, which is disposed between the latch 501 and the window sash 20 and is used to control the extension and retraction of the latch 501. The clutch mechanism 503 is linked with the electric drive assembly 40. When the window sash 20 is closed, the clutch mechanism 503 drives the latch 501 to insert into the latch 502. When the window sash 20 is opened, the clutch mechanism 503 first drives the latch 501 to disengage from the latch 502, and then the electric drive assembly 40 drives the window sash 20 to open.

[0043] In this embodiment, the clutch mechanism 503 consists of a gear set and a push rod, and is installed inside the window sash 20 near the latch 501. Its input end is connected to the transmission screw 402 of the electric drive assembly 40 via a transmission component. When the window sash 20 is closed to a position close to the window frame 10, the transmission screw 402 drives the push rod forward through the gear set, pushing the latch 501 out of the window sash 20 and into the slot of the latch 502; at this time, the gear set triggers the limit switch, and the drive motor 401 stops rotating. When it is necessary to open the window sash 20, the drive motor 401 first rotates in the opposite direction a short distance, and drives the push rod backward through the gear set, causing the latch 501 to retract from the latch 502 into the window sash 20; after the limit switch detects that the unlocking is complete, the motor continues to rotate in the opposite direction, driving the window sash 20 to open.

[0044] Furthermore, the window sash 20 and the slider 403 are connected by a connecting rod 601. One end of the connecting rod 601 is hinged to the slider 403, and the other end is rotatably connected to the window sash 20. A buffer spring 602 is provided at the hinge point between the connecting rod 601 and the slider 403.

[0045] In this embodiment, one end of the connecting rod 601 is hinged to the slider 403 via a pin. A buffer spring 602 is sleeved on the outside of the pin, with both ends of the spring abutting against the protruding parts of the slider 403 and the connecting rod 601, respectively, so that the two are elastically constrained when rotating relative to each other. The other end of the connecting rod 601 is rotatably connected to the reinforcing plate on the inner side of the window sash 20 via a bolt. The connection point is located in the lower middle part of the window sash 20 to ensure force balance. When the slider 403 moves along the transmission screw 402, the connecting rod 601 converts the linear motion of the slider 403 into the rotational motion of the window sash 20 through the rotation of the hinge point. At the moment the window sash 20 opens or closes, the buffer spring 602 absorbs the impact force through its own deformation, preventing the components from wearing due to rigid collisions.

[0046] Furthermore, both the window frame 10 and the window sash 20 are provided with a beveled structure 603 on their sealing contact surfaces. The beveled structure 603 enables the O-ring sealing strip 301 and the inflatable sealing strip 302 to form a line seal when they come into contact.

[0047] In this embodiment, the sealing contact surface of the window frame 10 is machined into an outwardly inclined slope, while the corresponding contact surface of the window sash 20 is machined into an inwardly inclined slope. The inclination angles of the two are matched to form a wedge fit. The O-ring sealing strip 301 is installed on the edge of the inclined surface of the window sash 20, while the inflatable sealing strip 302 is installed on the inner side of the inclined surface of the window frame 10. When the window sash 20 is closed, the two inclined surfaces gradually approach each other, forcing the contact area between the O-ring sealing strip 301 and the inflatable sealing strip 302 to gradually tighten, ultimately forming a continuous line contact sealing strip. This inclined surface structure 603 can guide the deformation direction of the strip, preventing gaps from appearing due to uneven force on the strip, while also enhancing the adhesion pressure between the two.

[0048] Furthermore, a controller is provided on the window frame 10. The controller is electrically connected to the drive motor 401 and the air pump to control the working status of the electric drive assembly 40 and the inflatable sealing strip 302. The controller can automatically adjust the opening and closing status of the window sash 20 and the sealing pressure of the inflatable sealing strip 302 according to the temperature and humidity inside the grain warehouse.

[0049] In this embodiment, the controller is installed in a protective box outside the window frame 10 and is connected to the drive motor 401, the air pump, and the temperature and humidity sensor inside the grain silo via wires. The controller 604 has preset temperature and humidity thresholds. When the sensor detects that the temperature or humidity inside the grain silo exceeds the threshold, the controller first controls the air pump to release air, causing the inflatable sealing strip 302 to contract; then, it starts the drive motor 401 to open the window sash 20 at a certain angle for ventilation. When the temperature and humidity drop below the threshold, the controller 604 controls the motor to rotate in the opposite direction to close the window sash 20. After the locking component 50 locks in place, the controller then controls the air pump to inflate the sealing strip to a preset pressure. In addition, the controller 604 also has a manual control interface, which allows direct control of the opening and closing of the window sash 20 and the state of the sealing strip via external commands.

[0050] In summary, this utility model achieves automated opening, closing, and sealing of the window sash 20 through a concealed electric drive and locking linkage structure; it achieves efficient sealing in low-temperature grain storage environments through the active and passive sealing of double sealing strips and the beveled surface design; and it achieves thermal insulation, fire resistance, and operational stability of the window sash 20 through a composite structure and buffer design. When the motor rotates forward, the lead screw rotates forward, causing the slider to move and opening the window sash; when the motor rotates in reverse, the lead screw rotates in reverse, causing the slider to move and closing the window sash. A window locking mechanism is provided on both sides of the motor, which moves the locking slider through the rotation of the lead screw, pressing... The window sash features a latch with a clutch gear fixed to the screw rod. Engaging the gear and rotating it causes the latch to pass through a track and insert into the window sash lock hole, locking the sash securely. When opening the window, the window sash connects to a rod with a strip-shaped hole at the connection point. The motor rotates a certain distance before the window sash opens. Through this rotational gap, the latch is first disengaged from the window sash lock hole, the slider moves away from the latch, and a spring disengages the latch from the clutch gear. Both the sash and frame have rounded corners, and the sealing strip uses an O-ring integral strip, which can also be fitted with an inflatable sealing strip. Adjustments to the aluminum profile and sash manufacturing process address issues such as bulging or delamination of the sash steel plate. Fire-resistant strips can replace O-ring strips, achieving insulated, airtight, and fire-resistant doors and windows.

[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A hidden electric sealing window for low-temperature grain storage, characterized in that, include: Window frame (10), said window frame (10) is fixedly installed on the wall of the grain warehouse; A window sash (20) is movably connected to the window frame (10) via a hinge. The window sash (20) can rotate relative to the window frame (10) to open and close the window. A sealing assembly (30) is provided around the window sash (20) and on the window frame (10). When the window sash (20) is closed, the sealing assembly (30) forms an active seal and a passive seal for the window sash (20) and the window frame (10). The sealing assembly (30) includes: O-ring sealing strips (301) are disposed around the window sash (20) for the passive sealing; An inflatable sealing strip (302) is installed on the window frame (10) for active sealing. When the window sash (20) is closed, the O-ring sealing strip (301) and the inflatable sealing strip (302) are tightly fitted together.

2. The hidden electric sealing window for low-temperature grain storage according to claim 1, characterized in that, It also includes a locking component (50), which includes: A latch (501) is provided on the window sash (20); The latch (502) is provided on the window frame (10). When the window sash (20) is closed, the latch (501) is inserted into the latch (502) to lock the window sash (20).

3. The hidden electric sealing window for low-temperature grain storage according to claim 2, characterized in that, It also includes an electric drive assembly (40), which comprises: A drive motor (401) is fixedly installed on the window frame (10); A lead screw (402) is connected to the output shaft of a drive motor (401), and the drive motor (401) drives the lead screw (402) to rotate. The slider (403) is threadedly engaged with the transmission screw (402) and is rotatably connected to the window sash (20), thereby driving the slider (403) to move along the transmission screw (402).

4. The hidden electric sealing window for low-temperature grain storage according to claim 3, characterized in that, The window sash (20) adopts a multi-layer composite structure, including an outer steel plate, a middle insulation layer and an inner fireproof board. The middle insulation layer is made of high-pressure injected polyurethane material, and the inner fireproof board is made of aerogel material.

5. The hidden electric sealing window for low-temperature grain storage according to claim 4, characterized in that, The locking assembly (50) further includes: A clutch mechanism (503) is disposed between the latch (501) and the window sash (20) to control the extension and retraction of the latch (501). The clutch mechanism (503) is linked with the electric drive assembly (40). When the window sash (20) is closed, the clutch mechanism (503) drives the latch (501) to insert into the latch (502). When the window sash (20) is opened, the clutch mechanism (503) first drives the latch (501) to disengage from the latch (502), and then the electric drive assembly (40) drives the window sash (20) to open.

6. The hidden electric sealing window for low-temperature grain storage according to claim 5, characterized in that, The window sash (20) and the slider (403) are connected by a connecting rod (601). One end of the connecting rod (601) is hinged to the slider (403), and the other end is rotatably connected to the window sash (20). A buffer spring (602) is provided at the hinge point between the connecting rod (601) and the slider (403).

7. The hidden electric sealing window for low-temperature grain storage according to claim 6, characterized in that, Both the window frame (10) and the window sash (20) are provided with a beveled structure (603) on their sealing contact surfaces. The beveled structure (603) makes the O-ring sealing strip (301) and the inflatable sealing strip (302) form a line seal when they come into contact.

8. The hidden electric sealing window for low-temperature grain storage according to claim 7, characterized in that, A controller is provided on the window frame (10). The controller is electrically connected to the drive motor (401) and the air pump. It is used to control the working state of the electric drive assembly (40) and the inflatable sealing strip (302). The controller can automatically adjust the opening and closing state of the window sash (20) and the sealing pressure of the inflatable sealing strip (302) according to the temperature and humidity in the grain warehouse.

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