Fireproof plugging device for rectangular pipeline
By designing a fireproof sealing device for rectangular pipes, and using components such as a sleeve shell, pre-assembled rectangular pipe sections, and a transparent observation window, the issues of aesthetics and ease of operation of the fireproof sealing device were resolved, achieving reliable sealing effect and convenient inspection method.
Patent Information
- Application Number
- CN202520375180.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-05
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-05
AI Technical Summary
Existing fire-stopping devices for the electromechanical profession in the construction industry, when using fireproof putty and fireproof boards, suffer from poor aesthetics, inconvenient operation, and difficulty in inspecting the sealing effect.
A fireproof sealing device for rectangular pipes is designed, consisting of a sleeve shell, a pre-assembled rectangular pipe section, a transparent observation window, a fireproof board, a fireproof expansion sealing strip, and mineral wool. Quick-release components enable rapid disassembly and transparent observation, ensuring reliable sealing effect.
It improves the aesthetics and reliability of fireproof sealing, facilitates external inspection of sealing effectiveness, and enhances operational flexibility and maintenance efficiency.
Smart Images

Figure CN223868726U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of finished fireproof sealing devices for electromechanical engineering in the construction industry, specifically a fireproof sealing device for rectangular pipes. Background Technology
[0002] When cable trays and ducts in the electromechanical field of the building industry pass through walls or floors, sleeves should be installed and fireproofing should be carried out in accordance with the requirements of construction drawings, specifications, and atlases. Currently, fireproofing of the sleeves of air ducts and cable trays in the electromechanical field of the building industry is usually achieved by fireproof putty, fireproof bags, or fireproof boards.
[0003] However, when fireproof putty is used for fireproof sealing, it is prone to cracking and peeling, affecting the fireproof sealing effect. When fireproof boards are used for fireproof sealing, the aesthetics of the gaps between the fireproof board and the pipe / sleeve are affected to varying degrees by different operators and construction environments. When fireproof boards are used at the sleeve ends and fireproof putty is added tightly to the inside of the sleeve, it is impossible to observe the density of the fireproof putty filling from the outside, making it inconvenient to check the fireproof sealing effect. Therefore, we propose a rectangular pipe fireproof sealing device. Utility Model Content
[0004] One of the technical problems this application aims to solve is: how to design a rectangular pipe fireproof sealing device that is both more aesthetically pleasing and more practical.
[0005] To address the aforementioned technical problems, this application provides a fireproof sealing device for rectangular pipes, comprising a sleeve shell, a rectangular pre-assembled pipe section, two transparent observation windows, two fireproof putty, two fireproof boards, two fireproof expansion sealing strips, and mineral wool. The sleeve shell has a rectangular cross-sectional shape, and the rectangular pre-assembled pipe section is movably disposed within the sleeve shell, with both being coaxially arranged. The mineral wool is filled between the outer side of the rectangular pre-assembled pipe section and the inner wall of the sleeve shell. Both fireproof boards are disposed between the rectangular pre-assembled pipe section and the sleeve shell. The two fireproof expansion sealing strips are respectively disposed at the contact points between the corresponding fireproof boards and the rectangular pre-assembled pipe section. The two transparent observation windows are respectively disposed on both sides of the sleeve shell and are fitted onto the outer side of the rectangular pre-assembled pipe section. The two fireproof putty are respectively filled between the corresponding transparent observation windows and the fireproof boards. Quick-release components are provided on both fireproof boards and the corresponding transparent observation windows for quick disassembly of the fireproof boards and transparent observation windows.
[0006] In some embodiments, the device includes an extrusion column movably disposed within a fireproof plate, a limiting groove is provided on the inner side of the sleeve shell, a connecting groove is provided on the outer side of the fireproof plate, the extrusion column is movably disposed on the inner wall of the connecting groove and the limiting groove, and a spring is provided between the extrusion column and the connecting groove.
[0007] In some embodiments, a movable rod is movably disposed on the inner side of the sleeve housing, a slot is provided on the side of the transparent observation window, a straight groove is provided on the inner side of the sleeve housing, the movable rod is movably disposed on the inner wall of the straight groove, a circular groove is provided on the side of the sleeve housing, a double-headed inclined rod is movably disposed inside the circular groove, the other end of the double-headed inclined rod penetrates the interior of the sleeve housing and is movably disposed inside the straight groove, an inclined groove is provided on the outer surface of the movable rod, the inclined surface of the double-headed inclined rod is movably disposed on the inner wall of the inclined groove, and a spring is provided between the movable rod and the straight groove.
[0008] In some embodiments, a frustum column is movably disposed on the inner wall of the circular groove, the inclined surface of the frustum column is movably disposed on the inclined surface of the double-headed inclined rod, a spring three is disposed on the end face of the frustum column, the other end of the spring three is disposed on the inner wall of the circular groove, and a pressing rod is disposed on the other end of the frustum column.
[0009] In some embodiments, the width and height of the casing cross-section are 50-100 mm greater than the width and height of the rectangular pipe pre-assembly section cross-section, and the length of the rectangular pipe pre-assembly section is 100-200 mm greater than the length of the casing.
[0010] In some embodiments, the width and height of the rectangular through-hole of the fireproof board are 2-5 mm larger than the width and height of the pre-assembled rectangular pipe section, respectively.
[0011] In some embodiments, the mineral wool is compressed to a degree of not less than 30%.
[0012] In some embodiments, the sleeve housing has a groove on its side.
[0013] This utility model has at least the following beneficial effects:
[0014] 1. A rectangular pipe fireproof sealing device is composed of a sleeve shell, a rectangular pipe pre-installed section, a transparent observation window, fireproof putty, fireproof board, fireproof expansion sealing strip and mineral wool. When installed in sequence, it can improve the aesthetics of fireproof sealing, increase the reliability of fireproof sealing, and facilitate the observation of the effect of fireproof putty sealing from the outside.
[0015] 2. The quick-release assembly allows for rapid removal of the transparent observation window and fireproof panel from the casing, thereby effectively increasing maintenance efficiency and operational flexibility. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic cross-sectional view of the outer casing of this utility model.
[0018] Figure 3 This is a cross-sectional structural diagram of the fireproof board used in this application.
[0019] Figure 4 for Figure 3 A magnified structural diagram at point A;
[0020] Figure 5 This is a cross-sectional structural diagram of the transparent observation window of this utility model;
[0021] Figure 6 for Figure 5 A magnified structural diagram at point B;
[0022] Figure 7 This is a schematic cross-sectional view of the side of the outer casing of this utility model sleeve.
[0023] Figure 8 for Figure 7 A magnified structural diagram at point C;
[0024] Figure 9 This is a schematic diagram of the structure of this practical quick-release assembly;
[0025] Figure 10 This is a structural schematic diagram of the casing and pre-assembled rectangular pipe section of this utility model.
[0026] In the diagram: 1. Sleeve housing; 2. Rectangular pre-assembled pipe section; 3. Transparent observation window; 4. Fireproof putty; 5. Fireproof board; 6. Fireproof expansion sealing strip; 7. Mineral wool; 8. Groove; 9. Quick-release assembly; 91. Limiting groove; 92. Connecting groove; 93. Spring 1; 94. Extrusion column; 95. Circular groove; 96. Straight groove; 97. Locking groove; 98. Double-headed diagonal rod; 99. Moving rod; 910. Diagonal groove; 911. Spring 2; 912. Frustum column; 913. Spring 3; 914. Pressing rod. Detailed Implementation
[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. 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.
[0028] Example 1: Please refer to Figure 1-9This utility model provides a technical solution: a rectangular pipe fireproof sealing device, comprising a sleeve shell 1, a rectangular pipe pre-installed section 2, two transparent observation windows 3, two fireproof putty 4, two fireproof boards 5, two fireproof expansion sealing strips 6, and mineral wool 7. The sleeve shell 1 has a rectangular cross-sectional shape. The rectangular pipe pre-installed section 2 is movably installed inside the sleeve shell 1, and the two are coaxially arranged. The mineral wool 7 is filled between the outer side of the rectangular pipe pre-installed section 2 and the inner wall of the sleeve shell 1. The two fireproof boards 5 are both installed between the rectangular pipe pre-installed section 2 and the sleeve shell 1. The two fireproof expansion sealing strips 6 are respectively installed at the joint of the corresponding fireproof board 5 and the rectangular pipe pre-installed section 2. The two transparent observation windows 3 are respectively installed on both sides of the sleeve shell 1, and are both fitted on the outer side of the rectangular pipe pre-installed section 2. The two fireproof putty 4 are respectively filled between the corresponding transparent observation windows 3 and the fireproof boards 5. The two fireproof boards 5 and the corresponding transparent observation windows 3 are each provided with quick-release components 9 for quick disassembly of the fireproof boards 5 and the transparent observation windows 3.
[0029] The quick-release assembly 9 includes a pressing post 94 movably disposed within the fireproof plate 5. A limiting groove 91 is provided on the inner side of the sleeve housing 1, and a connecting groove 92 is provided on the outer side of the fireproof plate 5. The pressing post 94 is movably disposed within the inner wall of the connecting groove 92 and the limiting groove 91. A spring 93 is provided between the pressing post 94 and the connecting groove 92. When the pressing post 94 is engaged in the limiting groove 91, the fireproof plate 5 can be limited within the sleeve housing 1.
[0030] A movable rod 99 is movably disposed on the inner side of the sleeve housing 1. A slot 97 is opened on the side of the transparent observation window 3. A straight groove 96 is opened on the inner side of the sleeve housing 1. The movable rod 99 is movably disposed on the inner wall of the straight groove 96. A circular groove 95 is opened on the side of the sleeve housing 1. A double-headed inclined rod 98 is movably disposed inside the circular groove 95. The other end of the double-headed inclined rod 98 penetrates the interior of the sleeve housing 1 and is movably disposed inside the straight groove 96. An inclined groove 910 is opened on the outer surface of the movable rod 99. The inclined surface of the double-headed inclined rod 98 is movably disposed on the inner wall of the inclined groove 910. A spring 911 is provided between the movable rod 99 and the straight groove 96. The double-headed inclined rod 98 presses the inclined groove 910 of the movable rod 99, thereby driving the movable rod 99 into the slot 97.
[0031] A frustum column 912 is movably mounted on the inner wall of the circular groove 95. The inclined surface of the frustum column 912 is movably mounted on the inclined surface of the double-headed inclined rod 98. A spring 913 is mounted on the end face of the frustum column 912. The other end of the spring 913 is mounted on the inner wall of the circular groove 95. A pressing rod 914 is mounted on the other end of the frustum column 912. The spring 913 can provide a reset function for the frustum column 912.
[0032] The width and height of the casing 1 section are 50-100mm larger than the width and height of the rectangular pipe pre-installed section 2 section, respectively, and the length of the rectangular pipe pre-installed section 2 is 100-200mm larger than the length of the casing 1.
[0033] The width and height of the rectangular through hole of the fireproof board 5 are 2-5mm larger than the width and height of the rectangular pipe pre-installed section 2, respectively, and a certain gap is left between the two to fill the fireproof expansion sealing strip 6.
[0034] Mineral wool 7 has a compression degree of not less than 30%, and a compression degree of less than a certain value can provide better fire protection.
[0035] When using this device, first put the fireproof plate 5 on the pre-installed section 2 of the rectangular pipe, and then push it into the inner wall of the sleeve shell 1. At this time, the spring 93 is in a compressed state until the extrusion column 94 reaches the inner wall of the limit groove 91, then the spring 93 will drive the extrusion column 94 to reset, so that the extrusion column 94 is squeezed into the limit groove 91.
[0036] When it is necessary to disassemble the transparent observation window 3, simply press the pressing rod 914. The pressing rod 914 will drive the frustum column 912 to move, and at the same time squeeze the spring 913. The frustum column 912 will drive the double-headed inclined rod 98 to move. The double-headed inclined rod 98 will squeeze the inclined groove 910 of the moving rod 99, thereby causing the moving rod 99 to disengage from the slot 97. This allows for the quick disassembly of the transparent observation window 3 and the fireproof plate 5.
[0037] Example 2: Please refer to Figure 10 This utility model provides a technical solution: a groove 8 is provided on the side of the sleeve shell 1, and the groove 8 can facilitate the removal of the transparent observation window 3.
[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0039] Although embodiments of the present utility have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present utility.
Claims
1. A fireproof sealing device for rectangular pipes, characterized in that: The casing comprises a sleeve shell (1), a rectangular pre-assembled pipe section (2), two transparent observation windows (3), two fireproof sealant (4), two fireproof boards (5), two fireproof expansion sealing strips (6), and mineral wool (7). The sleeve shell (1) has a rectangular cross-sectional shape. The rectangular pre-assembled pipe section (2) is movably installed inside the sleeve shell (1) and the two are coaxially arranged. The mineral wool (7) is filled between the outer side of the rectangular pre-assembled pipe section (2) and the inner wall of the sleeve shell (1). The two fireproof boards (5) are both installed between the rectangular pre-assembled pipe section (2) and the sleeve shell. Between the shell (1), two fireproof expansion sealing strips (6) are respectively set at the joint of the corresponding fireproof plate (5) and the rectangular pipe pre-assembly section (2). Two transparent observation windows (3) are respectively set on both sides of the sleeve shell (1) and are both fitted on the outside of the rectangular pipe pre-assembly section (2). Two fireproof putty (4) are respectively filled between the corresponding transparent observation window (3) and the fireproof plate (5). Both the two fireproof plates (5) and the corresponding transparent observation window (3) are provided with quick-release components (9) for quick disassembly of the fireproof plate (5) and the transparent observation window (3).
2. The fireproof sealing device for rectangular pipes according to claim 1, characterized in that: The quick-release assembly (9) includes a pressing column (94) movably disposed within the fireproof plate (5), a limiting groove (91) is provided on the inner side of the sleeve shell (1), a connecting groove (92) is provided on the outer side of the fireproof plate (5), the pressing column (94) is movably disposed on the inner wall of the connecting groove (92) and the limiting groove (91), and a spring (93) is provided between the pressing column (94) and the connecting groove (92).
3. The fireproof sealing device for rectangular pipes according to claim 2, characterized in that: A movable rod (99) is movably provided on the inner side of the sleeve shell (1). A slot (97) is provided on the side of the transparent observation window (3). A straight groove (96) is provided on the inner side of the sleeve shell (1). The movable rod (99) is movably provided on the inner wall of the straight groove (96). A circular groove (95) is provided on the side of the sleeve shell (1). A double-headed inclined rod (98) is movably provided inside the circular groove (95). The other end of the double-headed inclined rod (98) penetrates the interior of the sleeve shell (1) and is movably provided inside the straight groove (96). An inclined groove (910) is provided on the outer surface of the movable rod (99). The inclined surface of the double-headed inclined rod (98) is movably provided on the inner wall of the inclined groove (910). A spring (911) is provided between the movable rod (99) and the straight groove (96).
4. The rectangular pipe fireproof sealing device according to claim 3, characterized in that: A frustum column (912) is movably provided on the inner wall of the circular groove (95). The inclined surface of the frustum column (912) is movably provided on the inclined surface of the double-headed inclined rod (98). A spring three (913) is provided on the end face of the frustum column (912). The other end of the spring three (913) is provided on the inner wall of the circular groove (95). A pressing rod (914) is provided on the other end of the frustum column (912).
5. The fireproof sealing device for rectangular pipes according to claim 1, characterized in that: The width and height of the casing (1) are 50-100 mm greater than the width and height of the rectangular pipe pre-assembly section (2), and the length of the rectangular pipe pre-assembly section (2) is 100-200 mm greater than the length of the casing (1).
6. The fireproof sealing device for rectangular pipes according to claim 1, characterized in that: The width and height of the rectangular through hole of the fireproof board (5) are 2-5 mm larger than the width and height of the rectangular pipe pre-installed section (2).
7. The fireproof sealing device for rectangular pipes according to claim 1, characterized in that: The mineral wool (7) is compressed to a degree of not less than 30%.
8. The fireproof sealing device for rectangular pipes according to claim 1, characterized in that: The sleeve shell (1) has a groove (8) on its side.