Sealing and heat insulation access door

Abstract

The utility model provides a sealing heat insulation access door which has the advantages of being good in heat insulation effect, excellent in sealing performance and simple in structure. The sealing and heat insulation access door comprises a door frame, an access door body, hinges, a pressing assembly, a sealing strip and a heat insulation assembly. The heat insulation assembly comprises a first heat insulation module arranged between the hinge and the door frame and a second heat insulation module arranged on the inner side face of the access door body, and the interior of the door frame and the interior of the access door body are filled with heat preservation cotton. The hinge is connected with the door frame through a bolt, a thick plate is further arranged between the hinge and the door frame, and the thick plate is combined with the heat insulation module to form an efficient anti-cold-bridge structure; the sealing strip comprises a base part and a sealing part, the base part is of a U-shaped structure, at least one steel clamp is arranged in the base part, and the sealing part is arranged on the left side face or the right side face of the U-shaped structure; the utility model can be widely applied to the maintenance scene of industrial equipment, and is particularly suitable for the environment with higher requirements on sealing property and heat insulation property.

Description

Technical Field

[0001] This utility model relates to the field of maintenance door technology, specifically to a sealed and heat-insulated maintenance door. Background Technology

[0002] In the maintenance and operation of industrial equipment, the sealing performance and structural strength of access doors are crucial factors in ensuring safe equipment operation. However, access doors currently on the market generally suffer from the following problems:

[0003] 1. Cold bridge effect: In low-temperature environments, the metal frame of the access door is prone to cold bridge phenomenon, especially at the hinge connection points and the inner surface of the access door. The cold bridge effect leads to energy loss and surface condensation, reducing the reliability of the access door.

[0004] 2. Poor sealing effect: Traditional access doors usually use simple rubber strips for sealing, but because the sealing strips are prone to aging, falling off, or uneven sealing, problems such as air leakage and water leakage occur, affecting the normal operation of the equipment; Patent CN218787083U applies automotive sealing strips to access doors, but when the access door comes into contact with the automotive sealing strip, it will apply a large torque to it, and the base of the sealing strip is not equipped with a steel clip, which makes the automotive sealing strip easy to fall off.

[0005] 3. Complex structure and difficult installation and maintenance: Many inspection doors have complex designs and too many components, which not only increases manufacturing costs but also makes installation and subsequent maintenance inconvenient.

[0006] Based on the above technical issues, there is an urgent need for a maintenance door design that can effectively avoid the cold bridge effect, has excellent sealing performance, and has a simple structure, so as to meet the needs of modern industrial equipment for efficient sealing and long-term reliability. Utility Model Content

[0007] The purpose of this utility model is to provide a sealed and heat-insulated maintenance door, which achieves good cold bridge breaking and heat preservation effects by setting heat insulation components at multiple positions on the maintenance door.

[0008] The objective of this utility model is achieved through the following technical solution: This utility model provides a sealed and heat-insulated maintenance door, which includes:

[0009] The inspection door body includes a first insulation area, and an inspection port adapted to the inspection door body is connected to the inner side of the inspection door body.

[0010] A door frame, the door frame including a second insulation area, the door frame surrounding the inspection door body, the inspection door body being hinged to the door frame;

[0011] A heat insulation component, comprising a first heat insulation module and a second heat insulation module, wherein the first heat insulation module is disposed in the first heat insulation area and the second heat insulation module is disposed in the second heat insulation area;

[0012] A sealing strip is provided in the gap between the inspection door body, the door frame, and the inspection opening;

[0013] A clamping assembly is movably disposed on the outside of the inspection door body and moves along a preset movement path. The clamping assembly moves along the preset movement path to achieve tight adhesion and separation between the inspection door body and the sealing strip.

[0014] Preferably, the first and second heat insulation modules include thermal insulation cotton, and the interior of the inspection door body and door frame is hollow and filled with the thermal insulation cotton.

[0015] Preferably, the first heat insulation module further includes at least one first heat insulation strip; the inspection door body is hinged to the door frame via a hinge, and the first heat insulation strip is provided between the hinge and the door frame.

[0016] Furthermore, the hinge is fixedly connected to the door frame, and a decorative panel, a first heat insulation strip, and a fixing plate are sequentially arranged between the hinge and the door frame.

[0017] Furthermore, the second heat insulation module also includes a second heat insulation strip, which is disposed on the inner side of the inspection door body.

[0018] Furthermore, the clamping assembly includes a connecting device and a clamping device. The connecting device includes a fixed end and a pressure-receiving end. The fixed end is fixed to the outer side of the inspection door body. The clamping device is disposed above the pressure-receiving end. The clamping device includes a fixed part and a movable part. The movable part moves along the fixed part and clamps the connecting device.

[0019] Furthermore, the inspection door body is provided with three screw holes, and the fixing end is connected to the inspection door by bolts; two of the screw holes are provided on the opposite inner side of the inspection door body, and one screw hole is provided on the opposite outer side of the inspection door body.

[0020] Furthermore, the pressure-receiving end is provided with a limiting structure, and after the moving part contacts the pressure-receiving end, its left and / or right sides abut against the limiting structure.

[0021] Furthermore, the limiting structure includes a groove, and the lower end area of ​​the moving part is smaller than the groove.

[0022] Preferably, the limiting structure includes a protrusion, and a protrusion is provided on the right side of the position where the moving part contacts the pressure end.

[0023] Preferably, the sealing strip includes a sealing part and a base, the base having a U-shaped structure and at least one steel clip; the sealing part is located on the left or right side of the U-shaped structure.

[0024] Furthermore, the sealing part is provided with at least one vent hole.

[0025] Compared with the prior art, the beneficial effects that at least one technical solution adopted in the embodiments of this specification can achieve include at least:

[0026] First, this invention effectively prevents the cold bridge effect by providing heat insulation components at the door body and door frame. In particular, the first heat insulation strip at the connection between the hinge and the door frame effectively prevents heat from bridging from the numerous metal connections between the hinge and the door frame. Furthermore, the invention provides a second heat insulation strip on the inner side of the door body to further improve heat insulation performance and prevent the cold bridge effect. In addition, this invention reduces energy loss by filling the inside of the door frame and the inside of the door body with thermal insulation cotton.

[0027] Secondly, this utility model uses a specially designed U-shaped snap-fit ​​sealing strip and internal steel clip to ensure that the sealing strip is firmly snapped in place and fits tightly against the inspection door body, effectively preventing leakage; the breather hole design on the sealing strip allows the sealing strip to return to its original shape during the opening and closing of the door, improving the durability and service life of the sealing strip.

[0028] Third, the connecting device of this utility model achieves uniform force distribution at the fixed end by reasonably optimizing the screw hole, avoiding excessive deformation of the connecting device after being subjected to the pressure of the clamping device multiple times. In addition, the pressure-bearing end of the connecting device is also equipped with a limiting mechanism to prevent the clamping device from detaching from the pressure-bearing end, thereby enhancing the overall durability and stability of the clamping assembly. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments 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.

[0030] Figure 1 This is a front view of the sealed and heat-insulated maintenance door of this utility model;

[0031] Figure 2 for Figure 1 Cross-sectional view at position AA;

[0032] Figure 3 This is a schematic diagram of the structure of the sealed and heat-insulated maintenance door of this utility model;

[0033] Figure 4 for Figure 3 A magnified view of a portion of location A;

[0034] Figure 5 This is a front view of the connecting device of this utility model;

[0035] Figure 6 This is a top view of the connecting device of this utility model;

[0036] Figure 7 This is a schematic diagram of the structure of the sealing strip of this utility model;

[0037] Figure 8 This is a schematic diagram of the structure of the breathing hole of this utility model.

[0038] Explanation of reference numerals in the attached figures

[0039] 1. Inspection door body; 2. Door frame; 3. Pressing assembly; 31. Connecting device; 311. Fixed end; 312. Pressed end; 313. Groove; 32. Pressing device; 321. Fixed part; 322. Moving part; 41. Insulation cotton; 42. First heat insulation strip; 43. Second heat insulation strip; 5. Sealing strip; 51. Sealing part; 511. Breathing hole; 52. Base; 521. Steel clip; 6. Hinge; 61. Decorative panel; 62. Reinforcing plate; 7. Handle; 8. Inner panel. Detailed Implementation

[0040] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0041] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. This utility model can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] Meanwhile, in this specification, descriptions of orientation, such as up, down, left, right, front, back, inside, outside, longitudinal, transverse, vertical, and horizontal, are based on the orientations or positional relationships shown in the accompanying drawings. They are merely for the convenience of describing the invention 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 the invention. In this application, the term "side" refers to the side of the connecting device closer to the inspection door body, and the term "right" refers to the side away from the inspection door body. The term "inner side of the inspection door body" refers to the side of the inspection door body facing the inspection opening, and the term "outer side of the inspection door body" refers to the side of the inspection door body facing away from the inspection opening. The "inside of the inspection door body" refers to the hollow part of the inspection door body; the "relative outer side of the inspection door body" refers to the opposite side of the outer surface of the inspection door body that is closer to the door frame, and the "relative inner side of the inspection door body" refers to the opposite side of the outer surface of the inspection door body that is farther from the door frame; the "sealing part is located on the left or right side of the U-shaped structure" means that the sealing part is located on the left or right side of the letter "U" shape, not the lower side of the letter "U" shape; the "sequentially arranged" means arranged sequentially from the outside to the inside, which only represents the relative positional relationship between the components. Without destroying the relative position and connection order of each component, those skilled in the art can set other different intermediate components between the sequentially connected components according to actual needs.

[0043] This specification provides a sealed and insulated access door solution: the solution arranges insulation components at multiple locations on the access door to effectively block heat paths, reduce thermal conductivity, disperse heat flux density, and suppress condensation, significantly weakening the cold bridge effect between the hinge and the door frame, thereby improving the access door's insulation performance and environmental adaptability.

[0044] like Figure 1As shown, this embodiment provides a sealed and insulated maintenance door, comprising: a maintenance door body 1, the maintenance door body 1 including a first insulation area, an inspection port adapted to the maintenance door body 1 connected to the inner side of the maintenance door body 1, and a handle 7 provided on the maintenance door body 1; a door frame 2, the door frame 2 including a second insulation area, the door frame 2 surrounding the maintenance door body 1 circumferentially, and the maintenance door body 1 being hinged to the door frame 2 by a hinge 6; a heat insulation component, the heat insulation component including a first heat insulation module and a second heat insulation module, the first heat insulation module being disposed in the first insulation area, the second heat insulation module being disposed in the second insulation area, and the first and second insulation areas being arranged in parallel; a sealing strip 5, the sealing strip 5 being disposed in the L-shaped gap between the maintenance door body 1, the door frame 2, and the inspection port; the inspection port is a frame structure with an inner plate 8, the inner plate 8 being bent relative to the frame structure, the bending direction being the inner side of the maintenance door body 1, and one end of the sealing strip 5 being fixed to the inner plate 8. The other end abuts against the inner side of the inspection door body 1; however, it should be understood that the sealed and heat-insulating inspection door of this application can be applied to inspection ports of any shape and size. The positions of the inspection port and sealing strip in this embodiment are only preferred. The sealing strip 5 isolates the space of the inspection port from the external environment, further enhancing the heat preservation and sealing effect of the inspection door. It can be installed at any position in the gap between the inspection door body 1, the door frame 2 and the inspection port. The pressing component 3 is movably set on the outside of the inspection door body 1 and moves along a preset movement path. The pressing component 3 moves on the preset movement path to achieve the tight contact and separation of the inspection door body 1 and the sealing strip 5. It should be understood that the sealing strip 5 can be set at any position in the gap between the inspection door body 1, the door frame 2 and the inspection port. The setting on the inner side of the inspection door body 1 in the figure is only preferred. In other embodiments, the sealing strip 5 can also be set in the gap between the inspection door body 1 and the door frame 2.

[0045] In a preferred embodiment, the first heat insulation module includes a first heat insulation strip 42 disposed between the hinge 6 and the door frame 2; the second heat insulation module includes a second heat insulation strip 43 disposed on the inner side of the inspection door body 1, and a metal plate is also provided on the side of the second heat insulation module away from the inspection door body 1 to prevent the sealing strip 5 from directly contacting the second heat insulation module; the door frame 2 and the interior of the inspection door are hollow and filled with thermal insulation cotton 41; preferably, the first heat insulation strip 42 and the second heat insulation strip 43 are made of EPDM or Teflon material, and the thermal insulation cotton 41 is made of one or more of rock wool insulation material, glass fiber insulation material, polyurethane foam insulation material and rubber and plastic insulation material.

[0046] In this solution, the cooperation between the first and second heat insulation modules achieves a good heat preservation effect for the inspection door. Furthermore, the first heat insulation strip 42 is placed between the hinge 6 and the door frame 2. Since the hinge 6 and the door frame 2 are usually in direct metal-to-metal contact, without the heat insulation module, heat can be quickly transferred from the door frame 2 to the hinge 6 and then to the outside of the inspection door body 1. By setting the heat insulation module here, heat loss or intrusion can be precisely blocked, significantly reducing the impact of cold bridges. Moreover, the material of the heat insulation module is flexible and corrosion-resistant, which can maintain the mechanical connection strength without affecting the opening and closing performance of the door frame 2 and the hinge 6.

[0047] In a preferred embodiment, see Figure 2 To further improve the connection strength between the access panel and the door frame 2 and increase the overall structural stability, an L-shaped reinforcing plate 62 is provided between the access panel and the door frame 2. The design of the L-shaped reinforcing plate 62 effectively disperses the stress at the connection between the access panel and the door frame 2, especially under high-frequency switching or vibration of the access door body 1, preventing the connection from loosening or deforming. The reinforcement effect of the L-shaped reinforcing plate 62 increases the torsional rigidity of the door frame 2, making the access door stable during opening and closing. By strengthening the stability of the connection, fatigue damage caused by repeated stress is reduced, extending the overall service life of the access door. The connection method between the L-shaped reinforcing plate 62 and the access panel and the door frame 2 is flexible, and it can be fixed by welding or bolts, making installation convenient and easy to maintain.

[0048] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, the clamping assembly 3 includes a connecting device 31 and a clamping device 32. The connecting device 31 includes a fixed end 311 and a pressure-receiving end 312. The fixed end 311 is fixed to the outer side of the inspection door body 1. The clamping device 32 is provided above the pressure-receiving end 312. The clamping device 32 includes a fixed part 321 and a moving part 322. The moving part 322 moves along the fixed part 321 and clamps the connecting device 31. Further, the moving part 322 is a handwheel, and the fixed part 321 is a screw. The handwheel rotates on the thread of the screw to achieve up and down movement. The lower end face of the handwheel abuts against the pressure-receiving end 312 to achieve the clamping effect on the inspection door body 1.

[0049] In a preferred embodiment, such as Figure 2As shown, hinge 6 is connected to door frame 2 by bolts. A fixed thick plate is also provided between hinge 6 and door frame 2. The fixed thick plate has screw holes. The first heat insulation strip 42 is provided between the fixed thick plate and hinge 6. The fixed thick plate can be provided with slots. The inner wall of the slot is engraved with threads. Nuts can also be directly welded to the inner wall of the slot. A decorative plate 61 is also provided between hinge 6 and fixed thick plate. The width of the fixed thick plate is smaller than the width of door frame 2 and decorative plate 61. The first heat insulation module includes a vertical heat insulation module and a horizontal heat insulation module. The horizontal heat insulation module is provided on the fixed thick plate. Vertical heat insulation modules are disposed on both sides of the fixed thick plate between the decorative panel 61 and the decorative panel 61, and fill the gap between the decorative panel 61, the fixed thick plate and the door frame 2; preferably, the width of the horizontal heat insulation module corresponds to the width of the fixed thick plate, and the height of the vertical heat insulation module corresponds to the distance between the decorative panel 61 and the door frame 2; it should be understood that the preferred design of the horizontal heat insulation module and the vertical heat insulation module is not to be construed as a limitation on the scope of protection of the independent claims of this application, and the horizontal heat insulation module and the vertical heat insulation module may also be an integrally formed cap-shaped heat insulation module.

[0050] In a preferred embodiment, such as Figure 5 As shown, the pressure end 312 is provided with a limiting structure. After the moving part 322 contacts the pressure end 312, its right side abuts against the limiting structure. Since the pressure end 312 will deform when it is abutted by the lower end face of the handwheel, causing it to tilt and deform, the pressure end 312 is easy to fall off the lower end face of the handwheel. Therefore, a limiting structure is provided on the side of the pressure end 312 away from the inspection door body 1, which can effectively prevent the pressure end 312 from falling off the handwheel. The limiting structure includes a groove 313, and the lower end area of ​​the moving part 322 is smaller than the groove 313. Furthermore, the limiting structure includes a protrusion. A protrusion is provided on the right side of the position where the moving part 322 contacts the pressure end 312. The protrusion and the groove 313 can coexist, further preventing the pressure end 312 from falling off the handwheel.

[0051] In a preferred embodiment, such as Figure 6 As shown, the fixed end 311 includes three screw holes, and the fixed end 311 is connected to the inspection door by bolts; the fixed end 311 has two screw holes on the side near the inspection door body 1, and one screw hole on the side of the inspection door body 1; in this solution, by reasonably arranging the screw holes of the fixed end 311, the fixed end 311 is subjected to more uniform force and is less prone to deformation during the process of the handwheel pressing the connecting device 31.

[0052] In a preferred embodiment, such as Figure 7As shown, the sealing strip 5 includes a sealing part 51 and a base 52. The base 52 has a U-shaped structure and at least one steel clip 521 is provided inside the base 52. Furthermore, the sealing part 51 is located on the left or right side of the U-shaped structure. Since the access door needs to be opened and pressed against the sealing part 51 repeatedly in this solution, when the sealing part 51 is located on the lower side of the U-shaped structure, the sealing strip 5 will be subjected to a large torque. The presence of torque may cause the sealing strip 5 to loosen locally, resulting in the sealing part 51 not being able to fit evenly against the access door body 1, causing air or water leakage problems. In this application, the sealing part 51 is subjected to force direction closer to the center of the base 52, and the base 52 is provided with a steel clip 521, which can better fix the sealing strip 5 and prevent it from falling off.

[0053] It is important to note that Figure 2 The sealing part 51 shown faces the inspection door body 1, which is only a preferred embodiment. In other embodiments, the base 52 can be engaged with the inner side of the inspection door body 1, and the sealing part 51 faces the inspection opening and is in close contact with the inner panel 8 or the door frame 2.

[0054] In a preferred embodiment, such as Figure 8 As shown, the sealing part 51 is provided with at least one vent 511; when the maintenance door is closed, the sealing strip 5 will be squeezed, and a certain amount of pressure may accumulate inside; if there is no vent 511, the pressure cannot be released, which may cause the sealing strip 5 to be locally deformed or aged; the vent 511 allows air or gas inside the sealing strip 5 to be discharged, thereby avoiding the accumulation of internal stress caused by compression and extending the service life of the sealing strip 5.

[0055] In this specification, the same or similar parts between the various embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the descriptions of the embodiments described later are relatively simple, and relevant parts can be referred to the descriptions of the foregoing embodiments.

[0056] The above are merely specific embodiments 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 disclosed 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 scope of the claims.

Claims

1. A sealed and heat-insulated inspection door, characterized in that, include: The inspection door body includes a first insulation area, and an inspection port adapted to the inspection door body is connected to the inner side of the inspection door body. A door frame, the door frame including a second insulation area, the door frame surrounding the inspection door body, the inspection door body being hinged to the door frame; A heat insulation component, comprising a first heat insulation module and a second heat insulation module, wherein the first heat insulation module is disposed in the first heat insulation area and the second heat insulation module is disposed in the second heat insulation area; A sealing strip is provided in the gap between the inspection door body, the door frame, and the inspection opening; A clamping assembly is movably disposed on the outside of the inspection door body and moves along a preset movement path. The clamping assembly moves along the preset movement path to achieve tight adhesion and separation between the inspection door body and the sealing strip.

2. The sealed and heat-insulated inspection door according to claim 1, characterized in that, The first and second heat insulation modules include heat insulation cotton, and the inside of the inspection door body and door frame is hollow and filled with the heat insulation cotton.

3. The sealed and heat-insulated inspection door according to claim 2, characterized in that, The first heat insulation module further includes at least one first heat insulation strip; the inspection door body is hinged to the door frame via a hinge, and the first heat insulation strip is provided between the hinge and the door frame.

4. The sealed and heat-insulated inspection door according to claim 3, characterized in that, The hinge is fixedly connected to the door frame, and a decorative panel, a first heat insulation strip, and a fixing plate are sequentially arranged between the hinge and the door frame.

5. The sealed and heat-insulated inspection door according to claim 2, characterized in that, The second heat insulation module also includes a second heat insulation strip, which is disposed on the inner side of the inspection door body.

6. The sealed and heat-insulated inspection door according to claim 1, characterized in that, The clamping assembly includes a connecting device and a clamping device. The connecting device includes a fixed end and a pressure-receiving end. The fixed end is fixed to the outer side of the inspection door body. The clamping device is disposed above the pressure-receiving end. The clamping device includes a fixed part and a movable part. The movable part moves along the fixed part and clamps the connecting device.

7. The sealed and heat-insulated inspection door according to claim 6, characterized in that, The inspection door body has three screw holes, and the fixing end is connected to the inspection door by bolts; two of the screw holes are located on the inner side of the inspection door body, and one screw hole is located on the outer side of the inspection door body.

8. The sealed and heat-insulated inspection door according to claim 7, characterized in that, The pressure-receiving end is provided with a limiting structure, and after the moving part contacts the pressure-receiving end, its left and / or right sides abut against the limiting structure.

9. The sealed and heat-insulated inspection door according to claim 8, characterized in that, The limiting structure includes a groove, and the lower end area of ​​the moving part is smaller than the groove.

10. The sealed and heat-insulated inspection door according to claim 8, characterized in that, The limiting structure includes a protrusion, and a protrusion is provided on the right side of the position where the moving part contacts the pressure end.

11. The sealed and heat-insulated inspection door according to claim 1, characterized in that, The sealing strip includes a sealing part and a base. The base has a U-shaped structure and is provided with at least one steel clip. The sealing part is located on the left or right side of the U-shaped structure.

12. The sealed and heat-insulated inspection door according to claim 11, characterized in that, The sealing part is provided with at least one vent hole.

Images