Non-setting fireproofing plug
By combining the U-shaped frame structure with non-solidified fire-resistant sealant, the problems of complex operation and non-reusability of existing fire-resistant sealing structures are solved, realizing a non-destructive, adjustable fire-resistant sealant system that enhances fire resistance and sealing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 河北兴合宜电力设备有限公司
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-07
AI Technical Summary
Existing fireproof sealing structures require specialized tools for installation and dismantling, which makes the operation complicated, damages the wall, prevents reuse, and affects aesthetics and strength.
The design employs a U-shaped frame structure, combined with extension components, anti-detachment components, and sealing components. It utilizes a screw-driven wedge-shaped strip structure to achieve anti-detachment fixation, and adjusts the structure by inserting a rectangular groove into the extension plate. Non-solidifying fireproof sealant is used to fill the gaps, avoiding the use of expansion bolts and damage to the wall.
It enables reusable installation without drilling, ensuring the aesthetics and strength of the wall, while enhancing fire resistance and sealing. It adapts to various sizes of through-wall holes, facilitating maintenance and replacement.
Smart Images

Figure CN224468853U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of non-solidifying fireproof sealant technology, specifically a non-solidifying fireproof sealant. Background Technology
[0002] Non-solidifying fire sealant has excellent fire-retardant properties. When a fire occurs, it can effectively prevent flames from spreading through building gaps, holes and other parts, preventing the fire from spreading rapidly from one area to another, and buying valuable time for personnel evacuation and fire rescue.
[0003] Currently, a fireproof sealing structure for civil defense engineering, with publication number CN218843393U, includes a firewall. The firewall has wiring holes on its surface, with wiring conduits inside the holes. A sealing mechanism is installed inside the wiring holes. The sealing mechanism includes rock wool, fireproof pads, and activated carbon filters. The activated carbon filters and fireproof pads are fixedly connected to the surface of the rock wool. Sealing mechanisms are installed on both sides of the firewall, each including a sealant, a fireproof pad, an expansion nut, and bolts. This structure not only prevents the spread of fire but also absorbs large particles and odors in the smoke, thus reducing the harm of escaping smoke to humans. The sealing mechanism is designed to prevent smoke from escaping within a certain temperature range or for a certain period of time.
[0004] The fireproof sealing structure used in the above-mentioned civil defense projects has some problems in actual use. Installing expansion bolts requires the use of professional tools such as impact drills to make holes, which is relatively complicated. Moreover, disassembly will damage the expansion body fixed in the base material, making it unusable. If the position needs to be changed, multiple holes will be left in the base material, affecting the aesthetics and the strength of the base material. Utility Model Content
[0005] The purpose of this invention is to provide a non-solidifying fireproof sealant to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A non-solidifying fire sealant includes two sets of U-shaped frames with their openings facing each other. An extension member is provided between the two sets of U-shaped frames to adjust the distance between them according to the length of the through-wall hole. An installation strip is connected to the middle of the extension member via an adapter. A sealing member for sealing the inside of the two sets of U-shaped frames is connected to the bottom of the installation strip via a connector. Anti-detachment members are provided on the outer sides of the two sets of U-shaped frames to abut against the inner wall of the corresponding side of the through-wall hole, thereby preventing the two sets of U-shaped frames from detaching from the through-wall hole.
[0008] As a preferred technical solution, the anti-detachment component includes square grooves respectively opened on the outer sides of the two sets of U-shaped frames. The inner cavities of the two sets of square grooves are provided with first wedge strips slidably connected. The inclined surfaces of the two sets of first wedge strips are respectively slidably in contact with second wedge strips. The ends of the two sets of second wedge strips aligned with the openings of the square grooves are respectively fixedly connected with contact plates. The front ends of the two sets of U-shaped frames are respectively provided with first threaded holes. The inner cavities of the two sets of first threaded holes are respectively threaded with screws. The ends of the two sets of screws are respectively fixedly connected with adapter rods. The front ends of the two sets of first wedge strips are provided with adapter grooves corresponding to the adapter rods. The surfaces of the two sets of adapter rods are respectively rotatably connected to the inner cavities of the corresponding adapter grooves. Rotating the screws outwards drives the first wedge strips to move forward, thereby pushing the contact plates out of the square grooves through the second wedge strips.
[0009] As a preferred technical solution, the inner walls of the two sets of U-shaped frames on opposite sides and at corresponding positions of the square grooves on the corresponding sides are provided with limiting holes that communicate with the square grooves. The two sets of first wedge strips are respectively provided with second threaded holes on opposite sides. Limiting bolts are respectively inserted into the inner cavities of the two sets of limiting holes. The two sets of limiting bolts pass through the corresponding side limiting holes and are threadedly connected to the inner cavities of the corresponding side second threaded holes. When the first wedge strip moves to the required position, the limiting bolts are tightened to fix the first wedge strip.
[0010] As a preferred technical solution, guide grooves are provided on both the upper and lower parts of one side of the two sets of square grooves, and guide strips are slidably connected to the inner cavity of each set of guide grooves. The two sets of guide strips on one side are respectively fixedly connected to the end surface of the second wedge strip on the corresponding side.
[0011] As a preferred technical solution, the extension member includes rectangular slots respectively opened at both ends of each set of U-shaped frames. An extension plate is inserted into the inner cavity of the two sets of rectangular slots at the same height. The upper and lower ends of the front side of the two sets of U-shaped frames are respectively provided with guide holes communicating with the corresponding side rectangular slots. The front ends of each set of extension plates are respectively fixedly connected with threaded rods. The ends of each set of threaded rods pass through the inner cavity of the corresponding side guide hole and extend to the outside of the U-shaped frame. The ends of the threaded rods located on the outside of the U-shaped frame are respectively threaded with locking nuts. The ends of each set of locking nuts contact the surface of the corresponding side U-shaped frame.
[0012] As a preferred technical solution, the adapter includes rotating rods that are fixedly connected to both ends of the mounting strip, and fixing clips are rotatably sleeved on the surfaces of the two sets of rotating rods, and the two sets of fixing clips are fixedly connected to the bottom ends of the corresponding side extension plates.
[0013] As a preferred technical solution, the sealing component includes two sets of slots opened at the bottom of the mounting strip, with fire-resistant plates inserted into the inner cavities of the two sets of slots respectively. Fixing bolts are threaded to the front and rear sides of the mounting strip respectively, and the ends of the two sets of fixing bolts abut against the surface of the corresponding fire-resistant plates. A first fireproof layer is filled between the two sets of fire-resistant plates.
[0014] As a preferred technical solution, the first fireproof layer is a non-solidifying fireproof sealant.
[0015] As a preferred technical solution, the top of the extension plate located above is provided with a receiving hole that extends along its length, and the inner cavity of the receiving hole is filled with a second fireproof layer.
[0016] Compared with the prior art, the beneficial effects of this utility model are:
[0017] 1. This utility model uses an anti-detachment component to drive a wedge-shaped strip structure to push out the contact plate and abut against the inner wall of the wall hole, thus achieving anti-detachment fixation. This avoids the drilling problems caused by using expansion bolts. Moreover, the contact plate can be retracted simply by turning the screw in the opposite direction during disassembly, without damaging the wall. It can be reused and will not leave holes in the wall, ensuring the aesthetics and strength of the wall.
[0018] 2. This utility model, through the setting of the extension component, adopts the plug-in structure of the rectangular groove and the extension plate, and the locking method of the threaded rod and the locking nut, realizes the continuous adjustment and reliable fixation of the U-shaped frame spacing. The structure is simple and the adjustment range is flexible, which can adapt to the through holes of various sizes.
[0019] 3. Through the setting of the sealing component, the first fireproof layer adopts non-solidified fireproof sealing material, which can tightly fill the gap between the two sets of fireproof boards, enhance the fireproof and sealing effect, and can be easily cleaned and refilled when replacement or maintenance is required, without damaging the fireproof board and the base material. It is easy to reuse and avoids the problem of damage caused by material replacement. Attached Figure Description
[0020] Figure 1 This is a structural schematic diagram of a non-solidifying fireproof sealant according to the present invention;
[0021] Figure 2 This is a cross-sectional structural diagram of the U-shaped frame of this utility model;
[0022] Figure 3 This is a structural diagram showing the installation position of the fixing card in this utility model.
[0023] In the picture:
[0024] 100. U-shaped frame; 101. Rectangular groove;
[0025] 200. Fire-resistant board; 201. First fireproof layer;
[0026] 300. Extension plate; 301. Second fireproof layer; 302. Guide hole; 303. Threaded rod; 304. Locking nut; 305. Receiving hole; 306. Fixing clip; 307. Rotating rod; 308. Slot; 309. Mounting strip; 310. Fixing bolt;
[0027] 400. First wedge-shaped strip; 401. Second wedge-shaped strip; 402. Second threaded hole; 403. Limiting hole; 404. Limiting bolt; 405. Screw; 406. Adapter rod; 407. First threaded hole; 408. Square groove; 409. Adapter groove; 410. Guide strip; 411. Contact plate; 412. Anti-slip strip; 413. Guide groove. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] Please see Figure 1-3 This embodiment provides a non-solidifying fireproof sealant, including two sets of U-shaped frames 100 with their openings facing each other. An extension member is provided between the two sets of U-shaped frames 100 to adjust the distance between them according to the length of the through-wall hole. An installation strip 309 is connected to the middle of the extension member via a connector. A sealing member for sealing the interior of the two sets of U-shaped frames 100 is connected to the bottom of the installation strip 309 via a connector. Anti-detachment members are provided on the outer sides of the two sets of U-shaped frames 100 to abut against the inner wall of the corresponding side of the through-wall hole to prevent the two sets of U-shaped frames 100 from detaching from the through-wall hole.
[0030] The anti-detachment component includes square grooves 408 respectively opened on the outer sides of two sets of U-shaped frames 100. Each set of square grooves 408 has a first wedge-shaped strip 400 slidably connected to its inner cavity. The inclined surfaces of the two sets of first wedge-shaped strips 400 slidably contact second wedge-shaped strips 401. The ends of the two sets of second wedge-shaped strips 401 aligned with the openings of the square grooves 408 are respectively fixedly connected to contact plates 411. The front ends of each set of U-shaped frames 100 have first threaded holes 407. The inner cavities of the two sets of first threaded holes 407 are respectively threaded with screws 405. The ends of the two sets of screws 405 are respectively fixedly connected to adapter rods 406. The front ends of the two sets of first wedge-shaped strips 400 have openings that connect with the adapter rods 406. The corresponding adapter groove 409 has two sets of adapter rods 406 rotatably connected to the inner cavity of the corresponding adapter groove 409. Rotating the screw 405 outward drives the first wedge 400 to move forward, thereby pushing the contact plate 411 out of the square groove 408 through the second wedge 401. With the anti-detachment component, the screw 405 drives the wedge structure to push the contact plate 411 against the inner wall of the wall hole, achieving anti-detachment fixation. This avoids the drilling problem caused by using expansion bolts. Moreover, when disassembling, the contact plate 411 can be retracted by simply rotating the screw 405 in the opposite direction. It will not damage the wall, can be reused, and will not leave holes in the wall, ensuring the aesthetics and strength of the wall.
[0031] Multiple anti-slip strips 412 are provided on the outer side of both sets of contact plates 411 to improve the friction between the contact plates 411 and the wall of the through hole.
[0032] Among them, the inner walls of the two sets of U-shaped frames 100 on opposite sides and at corresponding positions of the square grooves 408 are provided with limiting holes 403 that communicate with the square grooves 408. The two sets of first wedge strips 400 are respectively provided with second threaded holes 402 on opposite sides. Limiting bolts 404 are respectively inserted into the inner cavities of the two sets of limiting holes 403. The two sets of limiting bolts 404 pass through the corresponding limiting holes 403 and are threadedly connected to the inner cavities of the corresponding second threaded holes 402. When the first wedge strip 400 moves to the required position, the limiting bolts 404 are tightened to fix the first wedge strip 400. Through the setting of the limiting bolts 404, the cooperation between the limiting bolts 404 and the second threaded holes 402 provides an additional fixing effect after the first wedge strip 400 moves into place, enhances the stability of the anti-detachment component, prevents the contact plate 411 from loosening due to vibration or external force, and further improves the reliability of the device.
[0033] Among them, guide grooves 413 are provided on the upper and lower parts of one side of the two sets of square grooves 408. Guide strips 410 are slidably connected to the inner cavity of each set of guide grooves 413. The two sets of guide strips 410 on one side are respectively fixedly connected to the end surface of the second wedge strip 401 on the corresponding side. Through the setting of guide strips 410 and guide grooves 413, precise guidance is provided for the movement of the second wedge strip 401, ensuring that the contact plate 411 is pushed out smoothly and evenly, avoiding jamming or deviation during the movement of the wedge strip, and improving the operation convenience and effectiveness of the anti-detachment component.
[0034] The extension member includes rectangular slots 101 respectively opened at both ends of each set of U-shaped frames 100. An extension plate 300 is inserted into the inner cavity of the two sets of rectangular slots 101 at the same height. Guide holes 302 communicating with the corresponding rectangular slots 101 are respectively opened on the upper and lower front surfaces of the two sets of U-shaped frames 100. Threaded rods 303 are fixedly connected to both ends of the front side of each set of extension plates 300. The ends of each set of threaded rods 303 pass through the inner cavity of the corresponding guide holes 302 and extend to the U-shaped frame 100. On the outside of the U-shaped frame 100, the ends of the threaded rods 303 are threadedly connected to locking nuts 304. The ends of each set of locking nuts 304 contact the surface of the corresponding side U-shaped frame 100. Through the setting of the extension, the rectangular slot 101 and the extension plate 300 are plugged into each other. With the locking method of the threaded rods 303 and the locking nuts 304, the continuous adjustment and reliable fixation of the spacing of the U-shaped frame 100 is realized. The structure is simple and the adjustment range is flexible, which can adapt to the through holes of various sizes.
[0035] The adapter includes rotating rods 307 fixedly connected to both ends of the mounting strip 309. Fixing clips 306 are rotatably sleeved on the surfaces of the two sets of rotating rods 307. The two sets of fixing clips 306 are fixedly connected to the bottom ends of the corresponding side extension plate 300. By setting the adapter, the mounting strip 309 can rotate around the axis, which makes it easy to adjust the angle of the sealing component according to the actual situation of the through hole, ensuring the sealing effect. At the same time, it is easy to disassemble the mounting strip 309, improving construction efficiency.
[0036] The sealing component includes two sets of slots 308 at the bottom of the mounting strip 309. Fire-resistant plates 200 are inserted into the inner cavities of the two sets of slots 308 respectively. Fixing bolts 310 are threaded onto the front and rear sides of the mounting strip 309. The ends of the two sets of fixing bolts 310 abut against the surface of the corresponding fire-resistant plates 200. A first fireproof layer 201 is filled between the two sets of fire-resistant plates 200. The first fireproof layer 201 is a non-solidifying fire-resistant sealant. Through the sealing component, the first fireproof layer 201, being a non-solidifying fire-resistant sealant, can tightly fill the gap between the two sets of fire-resistant plates 200, enhancing fire resistance and sealing effects. Furthermore, it can be easily cleaned and refilled when replacement or maintenance is required, without damaging the fire-resistant plates 200 or the substrate, facilitating reuse and avoiding damage caused by material replacement.
[0037] The specific composition of the non-solidifying fireproof sealant is a well-known technical method among those skilled in the art. For its specific component composition, please refer to the non-solidifying fireproof mud in a novel nano-encapsulated fireproof sealing composite published in CN218276026U. Other details will not be elaborated here.
[0038] The upper extension plate 300 has a receiving hole 305 at its top, which is set along its length. The inner cavity of the receiving hole 305 is filled with a second fireproof layer 301. With the setting of the second fireproof layer 301, the receiving hole 305 at the top of the upper extension plate 300 and the second fireproof layer 301 further enhance the overall fire resistance of the device, forming multiple fire barriers and strengthening the fire protection of the wall hole area.
[0039] The second fireproof layer 301 uses FM011 non-solidifying fireproof putty, which is a highly expandable monomeric fireproof material. When heated, it forms an expanded carbon structure, which prevents the spread of fire and smoke and has a fireproof effect of more than three hours. When heated, it can fill the gap between the fire-resistant board 200 and the extension board 300 above it.
[0040] Working principle;
[0041] First, based on the length of the through-wall hole, move both sets of U-shaped frames 100 outwards simultaneously. This causes the threaded rods 303, which are fixedly connected to both ends of the front side of the extension plate 300, to slide along the guide holes 302 of the rectangular grooves 101 connecting the upper and lower ends of the front side of the U-shaped frame 100. After the distance between the two sets of U-shaped frames 100 is adjusted appropriately, tighten the locking nuts 304 located at the ends of the threaded rods 303 on the outer side of the U-shaped frame 100, so that the ends of the locking nuts 304 contact the surface of the U-shaped frame 100, thereby fixing the extension plate 300 and completing the adjustment of the distance between the two sets of U-shaped frames 100.
[0042] Next, the two sets of U-shaped frames 100 are placed into the through-wall hole, and then the screw 405, which is opened in the first threaded hole 407 at the front end of the U-shaped frame 100, is rotated outward. The screw 405 drives the adapter rod 406, which is fixedly connected at the end, to rotate. Since the adapter rod 406 is rotatably connected to the inner cavity of the adapter groove 409 at the front end of the first wedge 400, it will drive the first wedge 400 to move forward in the inner cavity of the square groove 408 on the outside of the U-shaped frame 100. The inclined surface of the first wedge 400 slides into contact with the inclined surface of the second wedge 401. During the movement of the first wedge 400, it will push the second wedge 401 to move, thereby pushing the contact plate 411, which is fixedly connected at the end of the second wedge 401, out of the square groove 408, so that the contact plate 411 abuts against the inner wall of the corresponding side of the through-wall hole.
[0043] Meanwhile, limiting bolts 404 are inserted into the limiting holes 403 opened on the inner walls of the two sets of U-shaped frames 100 on opposite sides. The two sets of limiting bolts 404 are respectively threaded into the inner cavity of the corresponding second threaded hole 402. When the first wedge strip 400 moves to the required position, tightening the limiting bolts 404 can fix the first wedge strip 400.
[0044] Subsequently, based on the inner cavity formed by the two sets of U-shaped frames 100 and the two sets of extension plates 300, the fire-resistant board 200 is cut, and the first fireproof layer 201 is filled between the two sets of fire-resistant boards 200. Then, the two sets of fire-resistant boards 200 are respectively inserted into the inner cavity of the corresponding side slot 308 of the mounting strip 309, and the two sets of fire-resistant boards 200 are fixed with fixing bolts 310.
[0045] Then, the rotating rods 307 at both ends of the mounting strip 309 are rotated and engaged with the inner cavity of the corresponding side fixing clip 306, so that the sealing component seals its inner cavity.
[0046] Although embodiments of the present invention 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 invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A non-solidifying fire-resistant sealant, characterized in that, It includes two sets of U-shaped frames (100), with the openings of the two sets of U-shaped frames (100) arranged opposite each other. An extension member is provided between the two sets of U-shaped frames (100) to adjust the distance between the two sets of U-shaped frames (100) according to the length of the through hole. An installation strip (309) is connected to the middle of the extension member through an adapter. A sealing member for sealing the inside of the two sets of U-shaped frames (100) is connected to the bottom of the installation strip (309) through a connector. Anti-detachment members are provided on the outer sides of the two sets of U-shaped frames (100) to abut against the inner wall of the corresponding side of the through hole to prevent the two sets of U-shaped frames (100) from falling out of the through hole.
2. The non-solidifying fire-stopping material according to claim 1, characterized in that: The anti-detachment component includes square grooves (408) respectively opened on the outer sides of the two sets of U-shaped frames (100). The inner cavities of the two sets of square grooves (408) are each provided with a first wedge-shaped strip (400) slidably connected. The inclined surfaces of the two sets of first wedge-shaped strips (400) respectively slidably contact second wedge-shaped strips (401). The ends of the two sets of second wedge-shaped strips (401) aligned with the openings of the square grooves (408) are respectively fixedly connected with contact plates (411). The front ends of the two sets of U-shaped frames (100) are respectively provided with first threaded holes (407). The two sets of first threaded holes (407) are respectively provided with... 7) The inner cavity is threaded with screws (405), and the ends of the two sets of screws (405) are fixedly connected with adapter rods (406). The front ends of the two sets of first wedge strips (400) are provided with adapter grooves (409) corresponding to the adapter rods (406). The surfaces of the two sets of adapter rods (406) are rotatably connected to the inner cavity of the corresponding side adapter grooves (409). Rotating the screws (405) outward drives the first wedge strips (400) to move forward, thereby pushing the contact plate (411) out of the square groove (408) through the second wedge strip (401).
3. The non-solidifying fire-stopping material according to claim 2, characterized in that: The inner walls of the two sets of U-shaped frames (100) on opposite sides and at corresponding positions of the square grooves (408) on the corresponding sides are provided with limiting holes (403) that connect to the square grooves (408). The two sets of first wedge strips (400) are respectively provided with second threaded holes (402) on opposite sides. The inner cavities of the two sets of limiting holes (403) are respectively inserted with limiting bolts (404). The two sets of limiting bolts (404) pass through the corresponding side limiting holes (403) and are threadedly connected to the inner cavity of the corresponding side second threaded holes (402). When the first wedge strip (400) moves to the required position, the limiting bolts (404) are tightened to fix the first wedge strip (400).
4. The non-solidifying fire-stopping material according to claim 3, characterized in that: The two sets of square grooves (408) are provided with guide grooves (413) on both the upper and lower parts of one side. Each set of guide grooves (413) is slidably connected with a guide strip (410) in the inner cavity. The two sets of guide strips (410) on one side are respectively fixedly connected to the end surface of the second wedge strip (401) on the corresponding side.
5. The non-solidifying fire-stopping material according to claim 1, characterized in that: The extension includes rectangular slots (101) respectively opened at both ends of each set of U-shaped frames (100). An extension plate (300) is inserted into the inner cavity of the two sets of rectangular slots (101) at the same height. The upper and lower ends of the front side of the two sets of U-shaped frames (100) are respectively provided with guide holes (302) that connect to the corresponding side rectangular slots (101). The front ends of each set of extension plates (300) are respectively fixedly connected with threaded rods (303). The ends of each set of threaded rods (303) pass through the inner cavity of the corresponding side guide hole (302) and extend to the outside of the U-shaped frame (100). The ends of the threaded rods (303) located on the outside of the U-shaped frame (100) are respectively threaded with locking nuts (304). The ends of each set of locking nuts (304) contact the surface of the corresponding side U-shaped frame (100).
6. The non-solidifying fire-stopping material according to claim 5, characterized in that: The adapter includes rotating rods (307) that are fixedly connected to both ends of the mounting strip (309). The surfaces of the two sets of rotating rods (307) are respectively fitted with fixing clips (306), and the two sets of fixing clips (306) are respectively fixedly connected to the bottom ends of the corresponding side extension plate (300).
7. A non-solidifying fire-stopping material according to claim 6, characterized in that: The sealing component includes two sets of slots (308) opened at the bottom of the mounting strip (309). The inner cavities of the two sets of slots (308) are respectively inserted with fire-resistant plates (200). The front and rear sides of the mounting strip (309) are respectively threaded with fixing bolts (310). The ends of the two sets of fixing bolts (310) abut against the surface of the corresponding fire-resistant plates (200). The space between the two sets of fire-resistant plates (200) is filled with a first fireproof layer (201).
8. The non-solidifying fire-stopping material according to claim 7, characterized in that: The first fireproof layer (201) is a non-solidifying fireproof sealant.
9. A non-solidifying fire-stopping material according to claim 8, characterized in that: The top of the extension plate (300) located above has a receiving hole (305) that runs along its length, and the inner cavity of the receiving hole (305) is filled with a second fireproof layer (301).