Resettable fabricated building fireproof flue

Abstract

The invention relates to the technical field of building fire prevention, and discloses a resettable fabricated building fireproof flue which comprises a flue shell, a connecting mechanism comprises two inner cavities, the two inner cavities are formed in the left end and the right end of the top of the flue shell correspondingly, and fixing rods are fixedly connected to the interiors of the inner cavities; clamping blocks are slidably connected to the front side and the rear side of the outer wall of the fixing rod, clamping grooves are formed in the front side and the rear side of the left end and the right end of the bottom of the flue shell, the top ends of the clamping blocks penetrate through the inner cavity and are clamped with the clamping grooves, supporting rods are rotatably connected to the bottoms of the clamping blocks, and supporting blocks are arranged on the lower middle portion of the inner side of the inner cavity; the front side and the rear side of the supporting block are closed and rotationally connected with the corresponding supporting rods. The flue shells are connected in an inserted mode, the clamping blocks are pushed to be clamped with the clamping grooves through the reset springs, so that the flue shells are spliced for use, and in the disassembling process, the clamping blocks on the two sides are pulled to move towards the middle through the supporting rods on the two sides, and the flue shells are disassembled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building fire protection, and in particular to a resettable fabricated building fire protection chimney. BACKGROUND

[0002] Building fire protection refers to a series of measures taken in the whole process of building planning, design, construction and use to prevent fire from occurring, control fire from spreading and reduce fire hazards by selecting fireproof materials, setting fire-fighting facilities and formulating safety specifications.

[0003] With the advancement of urbanization, a large number of high-rise buildings have emerged, and the vertical space inside the building is prone to become a "chimney" for fire spread. The traditional chimney material has poor fire resistance and lacks fire separation, which cannot meet the fire safety requirements. At this time, a building fire protection chimney is needed.

[0004] The building fire protection chimney on the market is mainly prefabricated with reinforced concrete. The reinforced concrete structure is not easy to deform, crack or collapse in a fire, can effectively block the penetration of fire and high-temperature smoke, and delay the vertical spread of fire through the chimney. However, the reinforced concrete chimney is difficult to install due to its heavy weight and cannot be reused. To solve the above problems, the prior art uses steel plates or aluminum alloys to make chimneys, which are lighter and easier to install. However, in the event of a fire, the metal chimney has a low fire resistance limit, and high temperatures can cause the chimney to deform. The prior art improves the fire resistance of the metal chimney by covering it with fireproof materials. However, this fixed structure cannot meet the rapid installation and disassembly requirements of fabricated buildings and is not conducive to the reuse of the metal chimney, reducing the practicality of the device and failing to meet the needs of users. SUMMARY

[0005] The purpose of the present application is to provide a resettable fabricated building fire protection chimney that solves the problem of inconvenient and rapid installation and disassembly of the building fire protection chimney, and is not conducive to the reuse of the chimney.

[0006] To achieve the above purpose, the present application is implemented by the following technical solutions: A resettable fabricated building fire protection chimney, comprising a chimney shell, a connecting mechanism is arranged at the top of the chimney shell, the connecting mechanism is used for facilitating the rapid installation of the fire protection chimney, a sealing mechanism is arranged at the inner top of the chimney shell, the sealing mechanism is used for sealing the connection gap of the fire protection chimney, a plugging mechanism is arranged at the inner middle of the chimney shell, the plugging mechanism is used for facilitating plugging in the event of a fire. The connecting mechanism comprises two inner cavities, which are respectively arranged at the left and right ends of the top of the flue shell, and a fixing rod is fixedly connected to the inner cavities, slidingly connected with clamping blocks on the front and back sides of the outer wall of the fixing rod, and clamping grooves are arranged on the front and back sides of the left and right ends of the bottom of the flue shell, the top end of the clamping block penetrates through the inner cavity and is clamped with the clamping groove, a supporting rod is rotatably connected to the bottom of the clamping block, a supporting block is arranged on the inner side of the inner cavity, and the front and back sides of the supporting block are rotatably connected with the corresponding supporting rods, and a reset assembly is arranged on the outer side of the fixing rod.

[0007] Preferably, the sealing mechanism comprises a hollow column arranged on the inner side of the top of the flue shell, a bidirectional threaded rod rotatably connected to the inside of the hollow column, hollow plates fixedly connected to the left and right sides of the hollow column, movable pieces slidingly connected to the inner side of the hollow plate, first sliding blocks threadedly connected to the front and back sides of the outer wall of the bidirectional threaded rod, first connecting rods rotatably connected to the left and right ends of the first sliding blocks and penetrating through the hollow column, the movable piece rotatably connected to one end of the first connecting rod, second connecting rods rotatably connected to the front and back ends of the movable piece, second sealing plates rotatably connected to one end of the second connecting rods, a supporting assembly arranged on one side of the hollow plate, a control assembly arranged on the inner side of the hollow column, and moving assemblies arranged on the front and back sides of the hollow column.

[0008] Preferably, the sealing mechanism comprises a hollow column arranged on the inner side of the top of the flue shell, a bidirectional threaded rod rotatably connected to the inside of the hollow column, hollow plates fixedly connected to the left and right sides of the hollow column, movable pieces slidingly connected to the inner side of the hollow plate, first sliding blocks threadedly connected to the front and back sides of the outer wall of the bidirectional threaded rod, first connecting rods rotatably connected to the left and right ends of the first sliding blocks and penetrating through the hollow column, the movable piece rotatably connected to one end of the first connecting rod, second connecting rods rotatably connected to the front and back ends of the movable piece, second sealing plates rotatably connected to one end of the second connecting rods, a supporting assembly arranged on one side of the hollow plate, a control assembly arranged on the inner side of the hollow column, and moving assemblies arranged on the front and back sides of the hollow column.

[0009] Preferably, the reset assembly comprises a fixed block fixedly connected to the middle part of the outer side of the fixing rod, and reset springs are fixedly connected to the front and back sides of the fixed block, and one end of the reset spring is fixedly connected with the clamping block.

[0010] Preferably, the supporting assembly comprises first springs fixedly connected to the sides away from each other of the two hollow plates, movable plates fixedly connected to the sides away from each other of the two first springs, and the sides away from each other of the two movable plates are rotatably connected with the corresponding second sealing plates.

[0011] Preferably, the control assembly comprises a knob, the knob is rotationally connected at the top of the hollow column, the bottom end of the knob penetrates the hollow column and is fixedly connected with a driving bevel gear, the outer middle portion of the bidirectional threaded rod is fixedly connected with a driven bevel gear, and the driven bevel gear is meshingly connected with the driving bevel gear.

[0012] Preferably, the moving assembly comprises second sliding blocks, the two second sliding blocks are threadedly connected on the left and right sides of the bidirectional threaded rod respectively, the sides away from each other of the two second sliding blocks are fixedly connected with first sealing plates, and the sides of the first sealing plates and the second sealing plates are fixedly connected with sealing strips.

[0013] Preferably, the connecting mechanism further comprises a push plate, the push plate is fixedly connected at the top of the support block, and the top end of the push plate penetrates the flue shell.

[0014] Preferably, the connecting mechanism further comprises sliding grooves, the plurality of sliding grooves are respectively formed in the inner left and right sides of the corresponding inner cavities, and the left and right sides of the two support blocks are respectively slidably connected with the corresponding sliding grooves.

[0015] Preferably, the blocking mechanism further comprises baffle plates, the plurality of baffle plates are fixedly connected on the inner front and rear ends and left and right sides of the flue shell, and the inner side of the flue shell is provided with a refractory layer.

[0016] To sum up, the present application has at least one of the following beneficial technical effects: 1. The flue shells are inserted into each other, the clamping blocks are inserted into the clamping grooves, the clamping blocks are clamped with the clamping grooves through the reset springs, the flue shells are used by splicing, when disassembling, the push plate drives the support block to move downward, the clamping blocks on the two sides are pulled to move to the middle through the support rods on the two sides, the clamping blocks are separated from the clamping grooves, the flue shells are disassembled, the flue shells are quickly disassembled and assembled, and the needs of the user can be met.

[0017] 2. The hollow column is arranged at the flue joint, the sliding blocks are driven to move through the rotation of the bidirectional threaded rod, the left and right sides of the joint are sealed by the first sealing plates, the second sliding blocks are driven to move by the bidirectional threaded rod, the movable plates are driven to move by the first connecting rods, the second sealing plates are rotated by the second connecting rods, the front and rear sides of the joint are sealed, smoke leakage is prevented, and the practicability of the device is improved.

[0018] 3. The high temperature generated by the fire heats the heat-sensitive glass tube, the heat-sensitive glass tube is broken, the movable block is driven to move by the second spring, the baffle plates are rotated by the support plates, the baffle plates on the two sides are simultaneously rotated to the middle, the flue is closed, the fire cannot spread along the flue, and the safety of the device in use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the present application; Figure 2 is a front view of the present application; Figure 3 is a partial structural sectional view of the connecting mechanism of the present application; Figure 4 is Figure 3 is an enlarged view of A in Figure 5 is a sectional view of the flue shell structure of the present application; Figure 6 is a partial structural sectional view of the sealing mechanism of the present application; Figure 7 is Figure 6 is an enlarged view of B in Figure 8 is a partial structural sectional view of the present application; Figure 9 is a partial structural schematic view of the present application.

[0020] Wherein, 1, flue shell; 2, connecting mechanism; 21, inner cavity; 22, fixed rod; 23, clamping block; 24, supporting rod; 25, supporting block; 26, clamping groove; 27, reset assembly; 271, fixed block; 272, reset spring; 28, push plate; 29, sliding groove; 3, sealing mechanism; 31, hollow column; 32, bidirectional threaded rod; 33, hollow plate; 34, movable piece; 35, first sliding block; 36, first connecting rod; 37, supporting assembly; 371, first spring; 372, movable plate; 38, control assembly; 381, knob; 382, driving bevel gear; 383, driven bevel gear; 39, moving assembly; 391, second sliding block; 392, first sealing plate; 393, sealing strip; 310, second connecting rod; 311, second sealing plate; 4, plugging mechanism; 41, guide rod; 42, movable block; 43, supporting plate; 44, baffle; 45, heat-sensitive glass tube; 46, second spring; 47, baffle piece; 48, refractory layer. DETAILED DESCRIPTION

[0021] The following will be described in detail below in combination with the accompanying Figure 1 - the accompanying Figure 8 , the present application will be further described in detail.

[0022] The present application provides a resettable assembled building fireproof flue, which comprises a flue shell 1, a connecting mechanism 2 is arranged on the top of the flue shell 1, the connecting mechanism 2 is used for facilitating the quick installation of the fireproof flue, a sealing mechanism 3 is arranged on the inner side of the top of the flue shell 1, the sealing mechanism 3 is used for sealing the connecting gap of the fireproof flue, a plugging mechanism 4 is arranged on the inner side of the middle of the flue shell 1, and the plugging mechanism 4 is used for facilitating plugging in case of fire. The connecting mechanism 2 comprises two inner cavities 21 respectively arranged at the left and right ends of the top of the flue shell 1, and the inner cavities 21 are fixedly connected with fixed rods 22, the front and back sides of the outer wall of the fixed rods 22 are slidably connected with clamping blocks 23, the clamping blocks 23 can slide on the outer side of the fixed rods 22, the left and right ends of the bottom of the flue shell 1 are provided with clamping grooves 26 on the front and back sides, the top ends of the clamping blocks 23 penetrate the inner cavities 21 and are clamped with the clamping grooves 26, so that the flue shell 1 can be spliced, the bottoms of the clamping blocks 23 are rotatably connected with supporting rods 24, the inner side of the middle and lower parts of the inner cavities 21 are provided with supporting blocks 25, the front and back sides of the supporting blocks 25 are rotatably connected with the corresponding supporting rods 24, the supporting blocks 25 can drive the clamping blocks 23 to move through the supporting rods 24, the outer side of the fixed rods 22 is provided with a reset assembly 27, the reset assembly 27 comprises a fixed block 271 fixedly connected to the outer side of the middle part of the fixed rod 22, the front and back sides of the fixed block 271 are fixedly connected with reset springs 272, one end of the reset springs 272 is fixedly connected with the clamping blocks 23, and the reset springs 272 can drive the clamping blocks 23 to move, and the connecting mechanism 2 further comprises a push plate 28 fixedly connected to the top of the supporting blocks 25, the top end of the push plate 28 penetrates the flue shell 1, and the push plate 28 can drive the supporting blocks 25 to move; Specifically, when installing the device, first, the two flue shells 1 are aligned and inserted with each other, the clamping blocks 23 are inserted into the clamping grooves 26, and the clamping blocks 23 are driven to move by the reset springs 272, so that the clamping blocks 23 are clamped with the clamping grooves 26, and the two flue shells 1 can be spliced, when disassembling, the push plate 28 is pushed downward, the movement of the push plate 28 drives the supporting blocks 25 to move downward, the supporting blocks 25 can drive the clamping blocks 23 on the two sides to move to the middle through the supporting rods 24 on the two sides, so that the clamping blocks 23 can be easily separated from the clamping state with the clamping grooves 26, thereby the flue shell 1 is disassembled, the flue shell 1 can be quickly disassembled and assembled, and the needs of the user can be met.

[0023] The sealing mechanism 3 comprises a hollow column 31 arranged at the inner top of the flue shell 1, a bidirectional threaded rod 32 rotatably connected inside the hollow column 31, hollow plates 33 fixedly connected to the left and right sides of the hollow column 31, movable pieces 34 slidably connected to the inner sides of the hollow plates 33, first sliding blocks 35 threadedly connected to the front and rear sides of the outer wall of the bidirectional threaded rod 32, the first sliding blocks 35 being moved by the bidirectional threaded rod 32, first connecting rods 36 rotatably connected to the left and right ends of the first sliding blocks 35 and penetrating through the hollow column 31, one end of each first connecting rod 36 being rotatably connected to a movable piece 34, the first sliding blocks 35 being able to push the movable pieces 34 to move through the first connecting rods 36, second connecting rods 310 rotatably connected to the front and rear ends of each movable piece 34, second sealing plates 311 rotatably connected to one end of each second connecting rod 310, the movable pieces 34 being able to push the second sealing plates 311 to rotate through the second connecting rods 310, support assemblies 37 arranged on one side of each hollow plate 33, a control assembly 38 arranged inside the hollow column 31, moving assemblies 39 arranged on the front and rear sides of the hollow column 31, each support assembly 37 comprising a first spring 371 fixedly connected to the side of each hollow plate 33 away from the other, an activity plate 372 fixedly connected to the end of each first spring 371 away from the other, and the side of each activity plate 372 away from the other being rotatably connected to the corresponding second sealing plate 311, the control assembly 38 comprising a knob 381 rotatably connected to the top of the hollow column 31, a driving bevel gear 382 fixedly connected to the bottom end of the knob 381 and penetrating through the hollow column 31, the knob 381 being able to rotate the driving bevel gear 382, a driven bevel gear 383 fixedly connected to the middle of the outer side of the bidirectional threaded rod 32 and meshingly connected to the driving bevel gear 382, the driving bevel gear 382 being rotated, the driven bevel gear 383 being able to rotate the bidirectional threaded rod 32, each moving assembly 39 comprising a second sliding block 391 threadedly connected to the left and right sides of the bidirectional threaded rod 32, a first sealing plate 392 fixedly connected to the side of each second sliding block 391 away from the other, and the second sliding block 391 being able to move the first sealing plate 392, and a sealing strip 393 fixedly connected to the side of each of the first sealing plate 392 and the second sealing plate 311; Specifically, after the flue shell 1 is spliced, the hollow column 31 is placed at the splicing position of the flue shell 1, and the knob 381 is rotated, so that the driving bevel gear 382 is rotated, the driven bevel gear 383 is engaged with the driving bevel gear 382, the bidirectional threaded rod 32 is rotated, the second sliding block 391 is moved, the first sealing plate 392 can seal the left and right sides of the splicing position, and the bidirectional threaded rod 32 is rotated, the first sliding block 35 is moved, the first connecting rod 36 is pushed, the movable piece 34 is moved, the second connecting rod 310 is connected with the second sealing plate 311, the second sealing plate 311 is rotated, the front and back sides of the splicing position are sealed, the smoke in the flue can be effectively sealed, the smoke is prevented from diffusing through the gap, and the practicability of the device is improved.

[0024] The blocking mechanism 4 comprises guide rods 41, two guide rods 41 are fixedly connected to the left and right sides of the inside of the flue shell 1, movable blocks 42 are slidably connected to the front and back sides of the outer walls of the guide rods 41, the movable blocks 42 can slide on the outer sides of the guide rods 41, support plates 43 are rotatably connected to the top of the movable blocks 42, baffle plates 44 are rotatably connected to the front and back ends of the middle of the inside of the flue shell 1, the top ends of the support plates 43 are rotatably connected to the baffle plates 44, the movable blocks 42 can drive the baffle plates 44 to rotate through the support plates 43, second springs 46 are arranged on the front and back ends of the outer walls of the guide rods 41, one end of each second spring 46 is fixedly connected to the movable block 42, and the same heat-sensitive glass tube 45 is fixedly connected to the side, in connection with the two movable blocks 42, of the heat-sensitive glass tube 45, the heat-sensitive glass tube 45 breaks when heated; Specifically, when a fire breaks out, the heat-sensitive glass tube 45 is broken under the action of heat due to the high temperature of the fire, the second springs 46 are elongated and push the movable blocks 42 to move, and in the movement process of the movable blocks 42, the baffle plates 44 are rotated through the support plates 43, the rotating action of the baffle plates 44 effectively seals the flue port, and the spread of the fire through the flue to other areas is prevented, thereby improving the safety of the device in use.

[0025] The connecting mechanism 2 further comprises sliding grooves 29, a plurality of sliding grooves 29 are formed in the left and right sides of the corresponding inner cavities 21, and the left and right sides of the two support blocks 25 are slidably connected to the corresponding sliding grooves 29. Specifically, the sliding grooves 29 can limit the support blocks 25, so that the support blocks 25 can move accurately.

[0026] The blocking mechanism 4 further comprises baffle plates 47, a plurality of baffle plates 47 are fixedly connected to the front and back ends and the left and right sides of the inside of the flue shell 1, and a refractory layer 48 is arranged on the inside of the flue shell 1, the refractory layer 48 can improve the fire resistance of the flue shell 1. Specifically, the rotation of the baffle plate 44 can be limited by the baffle 47, and the fire resistance of the flue shell 1 is improved by the fire-resistant layer 48.

[0027] Working principle: when installing the device, align the two flue shells 1 with each other and insert them, the clamping block 23 will be inserted into the clamping groove 26, and the reset spring 272 will be extended to push the clamping block 23 to move, so as to be clamped with the clamping groove 26, so that the flue shell 1 can be spliced for use, and when disassembly is needed, push the push plate 28 downward, the push plate 28 will drive the supporting block 25 to move downward, and the supporting block 25 can pull the clamping block 23 on both sides to move to the middle through the supporting rods 24 on both sides, so that the clamping block 23 is disengaged from the clamping groove 26, so that the flue shell 1 can be disassembled, realizing the quick disassembly and assembly of the flue shell 1. And after the flue shell 1 is spliced, place the hollow column 31 at the splicing place of the flue shell 1, and rotate the knob 381, the knob 381 drives the driving bevel gear 382 to rotate, and since the driven bevel gear 383 is engaged with the driving bevel gear 382, the driven bevel gear 383 will drive the bidirectional threaded rod 32 to rotate, driving the second sliding block 391 to move, so that the first sealing plate 392 can seal the left and right sides of the splicing place, and when the bidirectional threaded rod 32 rotates, it will also drive the first sliding block 35 to move, the first sliding block 35 can push the movable piece 34 to move through the first connecting rod 36, and the movable piece 34 can push the second sealing plate 311 to rotate through the second connecting rod 310, thereby sealing the front and back sides of the splicing place, so that the smoke in the flue cannot diffuse through the gap. Finally, when a fire occurs, the high temperature generated by the fire will heat the heat-sensitive glass tube 45, which will break, and the second spring 46 will push the movable block 42 to move, and when the movable block 42 moves, the baffle plate 44 can be pulled to rotate through the supporting plate 43, thereby sealing the flue, so that the fire cannot spread along the flue.

[0028] Although embodiments of the present application 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 therein without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A repositionable prefabricated fireproof flue for buildings, comprising a flue shell (1), characterized in that, The top of the flue shell (1) is provided with a connecting mechanism (2), which is used to facilitate the quick installation of the fireproof flue. The top of the inner side of the flue shell (1) is provided with a sealing mechanism (3), which is used to seal the connection gap of the fireproof flue. The middle of the inner side of the flue shell (1) is provided with a blocking mechanism (4), which is used to facilitate blocking in case of fire. The connecting mechanism (2) includes an inner cavity (21). The two inner cavities (21) are respectively opened at the top left and right ends of the flue shell (1). A fixing rod (22) is fixedly connected inside the inner cavity (21). A locking block (23) is slidably connected to the front and back sides of the outer wall of the fixing rod (22). A locking groove (26) is opened at the bottom left and right ends of the flue shell (1). The top of the locking block (23) penetrates the inner cavity (21) and engages with the locking groove (26). A support rod (24) is rotatably connected to the bottom of the locking block (23). A support block (25) is provided in the lower middle part of the inner side of the inner cavity (21). The front and back sides of the support block (25) are closed and rotatably connected to the corresponding support rod (24). A reset component (27) is provided on the outer side of the fixing rod (22).

2. The repositionable prefabricated fireproof flue of a building according to claim 1, characterized in that, The sealing mechanism (3) includes a hollow column (31), which is located on the top inner side of the flue shell (1). A bidirectional threaded rod (32) is rotatably connected inside the hollow column (31). Hollow plates (33) are fixedly connected to both the left and right sides of the hollow column (31). A movable piece (34) is slidably connected to the inner side of the hollow plate (33). A first slider (35) is threaded to both the front and rear sides of the outer wall of the bidirectional threaded rod (32). The left and right ends of the first slider (35) penetrate the hollow column. 31) and is rotatably connected to a first connecting rod (36), one end of the first connecting rod (36) is rotatably connected to a movable piece (34), the front and rear ends of the movable piece (34) are rotatably connected to a second connecting rod (310), one end of the second connecting rod (310) is rotatably connected to a second sealing plate (311), a support assembly (37) is provided on one side of the hollow plate (33), a control assembly (38) is provided on the inner side of the hollow column (31), and a moving assembly (39) is provided on both the front and rear sides of the hollow column (31).

3. The repositionable prefabricated fireproof flue of a building according to claim 1, characterized in that, The sealing mechanism (4) includes guide rods (41), two guide rods (41) are fixedly connected to the left and right sides inside the flue shell (1), movable blocks (42) are slidably connected to the front and rear sides of the outer wall of the guide rods (41), a support plate (43) is rotatably connected to the top of the movable block (42), a baffle (44) is rotatably connected to the front and rear ends of the inner middle part of the flue shell (1), the top of the support plate (43) is rotatably connected to the baffle (44), a second spring (46) is provided on the front and rear ends of the outer wall of the guide rods (41), one end of the second spring (46) is fixedly connected to the movable block (42), and the same thermal glass tube (45) is fixedly connected to the connected side of the two movable blocks (42).

4. A repositionable prefabricated fireproof flue for buildings according to claim 1, characterized in that, The reset assembly (27) includes a fixing block (271), which is fixedly connected to the middle of the outer side of the fixing rod (22). Reset springs (272) are fixedly connected to both the front and rear sides of the fixing block (271), and one end of the reset spring (272) is fixedly connected to the locking block (23).

5. A repositionable prefabricated fireproof flue for buildings according to claim 2, characterized in that, The support assembly (37) includes a first spring (371), two first springs (371) are fixedly connected to the opposite sides of two hollow plates (33), and movable plates (372) are fixedly connected to the opposite ends of the two first springs (371). The opposite sides of the two movable plates (372) are rotatably connected to the corresponding second sealing plates (311).

6. A repositionable prefabricated fireproof flue for buildings according to claim 2, characterized in that, The control component (38) includes a knob (381) which is rotatably connected to the top of the hollow column (31). The bottom end of the knob (381) passes through the hollow column (31) and is fixedly connected to a driving bevel gear (382). A driven bevel gear (383) is fixedly connected to the middle of the outer side of the bidirectional threaded rod (32). The driven bevel gear (383) meshes with the driving bevel gear (382).

7. A repositionable prefabricated fireproof flue for buildings according to claim 2, characterized in that, The moving component (39) includes a second slider (391), and the two second sliders (391) are respectively threaded to the left and right sides of the bidirectional threaded rod (32). The two second sliders (391) are fixedly connected to a first sealing plate (392) on the opposite side. The first sealing plate (392) and the second sealing plate (311) are fixedly connected to a sealing strip (393) on one side.

8. A repositionable prefabricated fireproof flue for buildings according to claim 1, characterized in that, The connecting mechanism (2) further includes a push plate (28), which is fixedly connected to the top of the support block (25), and the top of the push plate (28) penetrates the flue shell (1).

9. A repositionable prefabricated fireproof flue for buildings according to claim 1, characterized in that, The connecting mechanism (2) also includes a slide groove (29), and multiple slide grooves (29) are respectively opened on the left and right sides inside the corresponding inner cavity (21), and the left and right sides of the two support blocks (25) are slidably connected to the corresponding slide grooves (29).

10. A repositionable prefabricated fireproof flue for buildings according to claim 3, characterized in that, The sealing mechanism (4) also includes baffles (47), and multiple baffles (47) are fixedly connected to the front and rear ends and left and right sides of the flue shell (1) respectively. The inner side of the flue shell (1) is provided with a fire-resistant layer (48).

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