CN114737729A - Building air pipe's fire prevention parcel structure - Google Patents
Building air pipe's fire prevention parcel structure Download PDFInfo
- Publication number
- CN114737729A CN114737729A CN202210532270.1A CN202210532270A CN114737729A CN 114737729 A CN114737729 A CN 114737729A CN 202210532270 A CN202210532270 A CN 202210532270A CN 114737729 A CN114737729 A CN 114737729A
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- Prior art keywords
- fireproof
- fire
- plate
- groove
- rod
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F17/00—Vertical ducts; Channels, e.g. for drainage
- E04F17/04—Air-ducts or air channels
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/942—Building elements specially adapted therefor slab-shaped
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Special Wing (AREA)
Abstract
The invention belongs to the field of ventilating ducts, in particular to a fireproof wrapping structure of a building ventilating duct, aiming at the problem that the side edge of the ventilating duct is easy to be distorted and damaged due to the high temperature of the existing fire, thus influencing the normal work of the ventilating duct and causing more labor and capital cost to be consumed when the ventilating duct is replaced, the invention provides the following scheme, which comprises a first fireproof wrapping plate and a second fireproof wrapping plate, wherein the bottom of the first fireproof wrapping plate is provided with two embedding grooves, the top of the second fireproof wrapping plate is provided with two embedding mechanisms, the two embedding mechanisms are respectively matched with the two embedding grooves, the bottom of the second fireproof wrapping plate is provided with a control mechanism, and the control mechanism is matched with the embedding mechanisms, the invention can effectively wrap the ventilating duct through a fireproof material plate, is convenient to disassemble and install and is convenient for overhauling the ventilating duct in the later period, and the installation is comparatively inseparable, the effectual effect that promotes the fire prevention.
Description
Technical Field
The invention relates to the technical field of ventilation pipelines, in particular to a fireproof wrapping structure of a building ventilation pipeline.
Background
Air pipe is used for carrying out the effect that the circulation was changed to the air to indoor environment, however among the prior art, air pipe passes through the metal and makes, but long-time in high temperature environment on every side, air pipe also receives the influence of temperature easily, thereby produce the damage to air pipe's local position, and there is the space in junction between the air pipe, the high temperature of conflagration can cause the distortion to damage to air pipe's side easily, can influence the ventilation pipe normal work like this, make and change and consume more manpower and fund cost at air pipe, for this we propose a building air pipe's fire prevention parcel structure, be used for solving above-mentioned problem.
Disclosure of Invention
The invention aims to solve the problem that the high temperature of fire can easily cause distortion and damage to the side edge of a ventilation pipeline, which can affect the normal work of the ventilation pipeline and consume more manpower and capital cost in the replacement of the ventilation pipeline in the prior art, and provides a fireproof wrapping structure of a building ventilation pipeline.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a building air pipe's fire prevention parcel structure, including first fire prevention parcel board and second fire prevention parcel board, the bottom of first fire prevention parcel board is provided with two gomphosis grooves, the top of second fire prevention parcel board is provided with two gomphosis mechanisms, two gomphosis mechanisms cooperate with two gomphosis grooves respectively, the bottom of second fire prevention parcel board is provided with control mechanism, control mechanism cooperatees with gomphosis mechanism, one side of first fire prevention parcel board and second fire prevention parcel board all is provided with first sealed the pad, one side of first fire prevention parcel board and second fire prevention parcel board all is provided with the sealed pad of second, first sealed pad cooperatees with the sealed pad of second, the both sides of first fire prevention parcel board all are provided with tightening mechanism.
Preferably, the tabling mechanism includes a tabling block arranged on the top of the second fireproof wrapping plate, and the tabling block is matched with the tabling groove.
Preferably, a spring groove is formed in one side of the embedded block, a wedge-shaped sliding block is slidably mounted in the spring groove, a clamping groove is formed in the inner wall of one side of the embedded groove, the clamping groove is matched with the wedge-shaped sliding block, and the clamping groove can lock the embedded block through the wedge-shaped sliding block.
Preferably, a return spring is arranged in the spring groove, one end of the return spring is fixedly connected with the wedge-shaped sliding block, and the return spring can drive the wedge-shaped sliding block to reset.
Preferably, control mechanism installs first rotary rod including seting up the cavity in the second fire prevention parcel board, the fixed cover in the outside of first rotary rod is equipped with the reel, and the outside cover of reel is equipped with two haulage ropes, and the one end of haulage rope extends to in the spring groove and is connected with the wedge slider, and the reel can drive the displacement of wedge slider through the haulage rope.
Preferably, the rotating groove has been seted up to the bottom of second fire prevention parcel board, and the bottom of first rotary rod extends to the first hand wheel of rotating groove internal and fixedly connected with, and first hand wheel can drive the reel through first rotary rod and rotate.
Preferably, tightening mechanism is including seting up the spout in first fire prevention parcel board one side, and slidable mounting has the sliding block in the spout, is provided with the roating seat on the sliding block, rotates on the roating seat and installs the pull rod, has seted up the card hole on the pull rod, and one side of first fire prevention parcel board is provided with the kelly, and the kelly cooperatees with the card hole, and the pull rod can be through card hole and kelly gomphosis.
Preferably, the threaded rod is installed to the spout internal rotation, set up threaded hole on the sliding block, threaded rod threaded mounting is in the threaded hole, set up the gear chamber on the first fire prevention parcel board, and one side of first fire prevention parcel board is rotated and is installed the second rotary rod, the one end fixedly connected with second handle of second rotary rod, the other end of second rotary rod extends to the gear intracavity and the first bevel gear of fixedly connected with, the one end of threaded rod extends to gear intracavity and fixedly connected with second bevel gear, second bevel gear meshes with first bevel gear mutually, the threaded rod can drive the sliding block displacement through the screw hole.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the scheme, the embedded block is matched with the embedded groove, and the reset spring is matched with the clamping groove through the wedge-shaped sliding block, so that the first fireproof wrapping plate can be conveniently combined with the second fireproof wrapping plate, the outer side of the ventilation pipeline can be effectively wrapped, the high temperature of a fire disaster is effectively resisted, and the ventilation pipeline is prevented from being directly damaged by the fire disaster;
2. according to the scheme, the first handle is matched with the first rotary rod, the reel is matched with the traction rope, and the first hand wheel is rotated, so that the first fireproof wrapping plate and the second fireproof wrapping plate can be effectively separated, and the ventilating duct can be conveniently overhauled;
3. according to the scheme, the first bevel gear is matched with the second bevel gear, the threaded rod is matched with the sliding block through the threaded hole, the pull rod is matched with the clamping rod through the clamping hole, and the second bevel gear is rotated to effectively enable the two adjacent first fireproof wrapping plates to be tightly abutted, so that gaps are effectively avoided, and the wrapping of the ventilation pipeline is improved;
the fireproof ventilating duct can be effectively wrapped by the fireproof material plate, and the fireproof ventilating duct is convenient to disassemble and assemble, is convenient to overhaul at the later stage, is relatively tightly installed, and effectively improves the fireproof effect.
Drawings
Fig. 1 is a schematic structural view of a fireproof wrapping structure of a building ventilation duct according to the present invention;
fig. 2 is a schematic cross-sectional structure view along line E-E in fig. 1 of a fire-retardant wrapping structure of a building ventilation duct according to the present invention;
fig. 3 is a schematic cross-sectional structure view along the line F-F in fig. 1 of a fireproof wrapping structure of a building ventilation duct according to the present invention;
fig. 4 is an enlarged structural schematic view of a part a in fig. 2 of a fireproof wrapping structure of a building ventilation duct according to the present invention;
fig. 5 is a schematic perspective view of a wedge-shaped slider of a fireproof wrapping structure of a building ventilation duct according to the present invention.
In the figure: 1 first fire prevention parcel board, 2 second fire prevention parcel board, 3 gomphosis grooves, 4 first sealed pads, 5 second sealed pads, 6 gomphosis pieces, 7 spring grooves, 8 wedge slider, 9 draw-in grooves, 10 reset spring, 11 cavities, 12 first rotary rods, 13 reels, 14 haulage ropes, 15 rotary tanks, 16 first hand wheels, 17 spout, 18 sliding blocks, 19 roating seats, 20 pull rods, 21 card holes, 22 card poles, 23 threaded rods, 24 gear chambers, 25 second rotary rods, 26 second handles, 27 first bevel gears, 28 second bevel gears.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1-5, a building air pipe's fire prevention parcel structure, including first fire prevention parcel board 1 and second fire prevention parcel board 2, the bottom of first fire prevention parcel board 1 is provided with two gomphosis grooves 3, the top of second fire prevention parcel board 2 is provided with two gomphosis mechanisms, two gomphosis mechanisms cooperate with two gomphosis grooves 3 respectively, the bottom of second fire prevention parcel board 2 is provided with control mechanism, control mechanism cooperatees with gomphosis mechanism, one side of first fire prevention parcel board 1 and second fire prevention parcel board 2 all is provided with first sealed 4 that fills up, one side of first fire prevention parcel board 1 and second fire prevention parcel board 2 all is provided with the sealed 5 of second, the sealed 5 that fills up of first sealed 4 and the sealed 5 of second cooperatees, the both sides of first fire prevention parcel board 1 all are provided with tightening mechanism.
In this embodiment, the engaging mechanism includes an engaging block 6 disposed on the top of the second fireproof wrapping plate 2, and the engaging block 6 is engaged with the engaging groove 3.
In this embodiment, spring groove 7 has been seted up to one side of gomphosis piece 6, and slidable mounting has wedge slider 8 in spring groove 7, has seted up draw-in groove 9 on one side inner wall of gomphosis groove 3, and draw-in groove 9 cooperatees with wedge slider 8, and draw-in groove 9 can be through the locking of wedge slider 8 with gomphosis piece 6.
In this embodiment, be provided with reset spring 10 in the spring groove 7, reset spring 10's one end and wedge slider 8 are connected through welded fastening, and reset spring 10 can drive wedge slider 8 and reset.
In this embodiment, control mechanism is including offering the cavity 11 in second fire prevention parcel board 2, and first rotary rod 12 is installed to 11 internal rotations in cavity, and the outside of first rotary rod 12 is equipped with reel 13 through welded fastening cover, and the outside cover of reel 13 is equipped with two haulage ropes 14, and the one end of haulage rope 14 extends to in spring slot 7 and is connected with wedge slider 8, and reel 13 can drive 8 displacements of wedge slider through haulage rope 14.
In this embodiment, a rotating groove 15 has been seted up to the bottom of second fire prevention parcel board 2, and the bottom of first rotary rod 12 extends to in the rotating groove 15 and through the first hand wheel 16 of welded fastening connection, and first hand wheel 16 can drive reel 13 through first rotary rod 12 and rotate.
In this embodiment, tightening mechanism is including offering the spout 17 in first fire prevention parcel board 1 one side, and slidable mounting has sliding block 18 in spout 17, is provided with roating seat 19 on the sliding block 18, and roating seat 19 is last to rotate and to install pull rod 20, has seted up card hole 21 on the pull rod 20, and one side of first fire prevention parcel board 1 is provided with kelly 22, and kelly 22 cooperatees with calorie hole 21, and pull rod 20 can be through calorie hole 21 and kelly 22 gomphosis.
In this embodiment, threaded rod 23 is installed to the internal rotation of spout 17, threaded hole has been seted up on sliding block 18, threaded rod 23 threaded mounting is in threaded hole, gear chamber 24 has been seted up on first fire prevention parcel board 1, and one side of first fire prevention parcel board 1 rotates and installs second rotary rod 25, the one end fixedly connected with second handle 26 of second rotary rod 25, the other end of second rotary rod 25 extends to in gear chamber 24 and through the first bevel gear 27 of welded fastening connection, the one end of threaded rod 23 extends to in gear chamber 24 and through welded fastening connection with second bevel gear 28, second bevel gear 28 meshes with first bevel gear 27 mutually, threaded rod 23 can drive sliding block 18 displacement through the screw hole.
In the embodiment, when the air duct is used, the air duct can be effectively wrapped in a combined mode, so that damage of a fire to the air duct can be effectively resisted, the first fireproof wrapping plate 1 is firstly sleeved on the air duct, then the second fireproof wrapping plate 2 is combined with the first fireproof wrapping plate 1, the embedded block 6 is embedded with the embedded groove 3, then the wedge-shaped sliding block 8 is embedded with the clamping groove 9, the purpose of combining the first fireproof wrapping plate 1 and the second fireproof wrapping plate 2 is achieved, then the air duct is sequentially wrapped, next, two adjacent first fireproof wrapping plates 1 are tightened through the tightening mechanism, a large gap cannot be generated between the adjacent first fireproof wrapping plates 1, at the moment, the first sealing gasket 4 is abutted against the second sealing gasket 5, then the pull rod 20 is rotated, so that the clamping hole 21 on the pull rod 20 corresponds to the clamping rod 22, then the second hand wheel 26 is rotated, the second hand wheel 26 drives the first bevel gear 27 to rotate through the second rotating rod 25, the first bevel gear 27 drives the second bevel gear 28 to rotate, the second bevel gear 28 drives the threaded rod 23 to rotate, the threaded rod 23 drives the sliding block 18 to displace through the threaded hole, so that the sliding block 18 passes through the pull rod 20 and the clamping rod 22, two adjacent first fireproof wrapping plates 1 can be tightly abutted, thereby avoiding the generation of gaps, effectively improving the fireproof effect, when the ventilation duct needs to be overhauled, the first fireproof wrapping plate 1 and the second fireproof wrapping plate 2 need to be detached, at the moment, the second hand wheel 26 can be reversely rotated to reset and separate the tightening mechanism, then the first hand wheel 16 is rotated again, so that the first hand wheel 16 drives the winding wheel 13 to rotate through the first rotating rod 12, and the traction rope 14 is wound through the winding wheel 13, and then make 14 pulling wedge-shaped slide blocks 8 of haulage rope and make 8 displacements of wedge-shaped slide blocks, until wedge-shaped slide blocks 8 and draw-in groove 9 separation to make second fire prevention parcel board 2 and the separation of first fire prevention parcel board 1, reach the purpose that the split was overhauld.
Example two
The difference from the first embodiment is that: rotatory groove 15 has been seted up to the bottom of second fire prevention parcel board 2, and the bottom of first rotary rod 12 extends to in the rotatory groove 15 and the first hand wheel 16 of fixedly connected with, is provided with the protective cover in the rotatory groove 15.
In the invention, when in use, the ventilating duct can be effectively wrapped in a combined mode, so that the damage of fire to the ventilating duct is effectively resisted, the first fireproof wrapping plate 1 is firstly sleeved on the ventilating duct, then the second fireproof wrapping plate 2 is combined with the first fireproof wrapping plate 1, the embedded block 6 is embedded with the embedded groove 3, then the wedge-shaped sliding block 8 is embedded with the clamping groove 9, the purpose of combining the first fireproof wrapping plate 1 and the second fireproof wrapping plate 2 is achieved, then the ventilating duct is sequentially wrapped, then two adjacent first fireproof wrapping plates 1 are tightened through the tightening mechanism, a larger gap cannot be generated between the adjacent first fireproof wrapping plates 1, at the moment, the first sealing gasket 4 is abutted against the second sealing gasket 5, then the pull rod 20 is rotated, so that the clamping hole 21 on the pull rod 20 corresponds to the clamping rod 22, then the second hand wheel 26 is rotated, the second hand wheel 26 drives the first bevel gear 27 to rotate through the second rotating rod 25, the first bevel gear 27 drives the second bevel gear 28 to rotate, the second bevel gear 28 drives the threaded rod 23 to rotate, the threaded rod 23 drives the sliding block 18 to displace through the threaded hole, so that the sliding block 18 passes through the pull rod 20 and the clamping rod 22, two adjacent first fireproof wrapping plates 1 can be tightly abutted, thereby avoiding the generation of gaps, effectively improving the fireproof effect, when the ventilation duct needs to be overhauled, the first fireproof wrapping plate 1 and the second fireproof wrapping plate 2 need to be detached at the moment, the second hand wheel 26 can be reversely rotated to reset and separate the tightening mechanism, then the protective cover is taken away and the first hand wheel 16 is rotated, so that the first hand wheel 16 drives the reel 13 to rotate through the first rotating rod 12, the traction rope 14 is wound through the reel 13, and then make 14 pulling wedge-shaped slide blocks 8 of haulage rope and make 8 displacements of wedge-shaped slide blocks, until wedge-shaped slide blocks 8 and draw-in groove 9 separation to make second fire prevention parcel board 2 and the separation of first fire prevention parcel board 1, reach the purpose that the split was overhauld.
The rest is the same as the first embodiment.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A fireproof wrapping structure of a building ventilation pipeline comprises a first fireproof wrapping plate (1) and a second fireproof wrapping plate (2), the fireproof packaging plate is characterized in that two embedded grooves (3) are formed in the bottom of the first fireproof packaging plate (1), two embedded mechanisms are arranged at the top of the second fireproof packaging plate (2), the two embedded mechanisms are matched with the two embedded grooves (3) respectively, a control mechanism is arranged at the bottom of the second fireproof packaging plate (2), the control mechanism is matched with the embedded mechanisms, a first sealing gasket (4) is arranged on one side of the first fireproof packaging plate (1) and one side of the second fireproof packaging plate (2), a second sealing gasket (5) is arranged on one side of the first fireproof packaging plate (1) and one side of the second fireproof packaging plate (2), the first sealing gasket (4) is matched with the second sealing gasket (5), and tightening mechanisms are arranged on two sides of the first fireproof packaging plate (1).
2. The fire-proof wrapping structure of the building ventilation duct is characterized in that the embedding mechanism comprises an embedding block (6) arranged at the top of the second fire-proof wrapping plate (2), and the embedding block (6) is matched with the embedding groove (3).
3. The fireproof wrapping structure of the building ventilation duct according to claim 2, wherein a spring groove (7) is formed in one side of the embedding block (6), a wedge-shaped sliding block (8) is slidably mounted in the spring groove (7), a clamping groove (9) is formed in the inner wall of one side of the embedding groove (3), and the clamping groove (9) is matched with the wedge-shaped sliding block (8).
4. The fireproof wrapping structure of a building ventilation duct of claim 3, wherein a return spring (10) is arranged in the spring groove (7), and one end of the return spring (10) is fixedly connected with the wedge-shaped sliding block (8).
5. The fire-proof wrapping structure of the building ventilation duct according to claim 4, wherein the control mechanism comprises a cavity (11) arranged in the second fire-proof wrapping plate (2), a first rotating rod (12) is rotatably mounted in the cavity (11), a winding wheel (13) is fixedly sleeved on the outer side of the first rotating rod (12), two pulling ropes (14) are sleeved on the outer side of the winding wheel (13), and one end of each pulling rope (14) extends into the spring groove (7) and is connected with the wedge-shaped sliding block (8).
6. The fire-proof wrapping structure of the building ventilation duct according to claim 5, characterized in that a rotating groove (15) is opened at the bottom of the second fire-proof wrapping plate (2), and the bottom end of the first rotating rod (12) extends into the rotating groove (15) and is fixedly connected with a first hand wheel (16).
7. The fire-proof wrapping structure of the building ventilation duct according to claim 6, characterized in that the tightening mechanism comprises a sliding groove (17) arranged on one side of the first fire-proof wrapping plate (1), a sliding block (18) is slidably mounted in the sliding groove (17), a rotating seat (19) is arranged on the sliding block (18), a pull rod (20) is rotatably mounted on the rotating seat (19), a clamping hole (21) is formed in the pull rod (20), a clamping rod (22) is arranged on one side of the first fire-proof wrapping plate (1), and the clamping rod (22) is matched with the clamping hole (21).
8. The fire-proof wrapping structure of the building ventilation duct according to claim 7, wherein a threaded rod (23) is rotatably mounted in the sliding groove (17), a threaded hole is formed in the sliding block (18), the threaded rod (23) is threadedly mounted in the threaded hole, a gear cavity (24) is formed in the first fire-proof wrapping plate (1), a second rotating rod (25) is rotatably mounted on one side of the first fire-proof wrapping plate (1), a second handle (26) is fixedly connected to one end of the second rotating rod (25), the other end of the second rotating rod (25) extends into the gear cavity (24) and is fixedly connected with a first bevel gear (27), one end of the threaded rod (23) extends into the gear cavity (24) and is fixedly connected with a second bevel gear (28), and the second bevel gear (28) is meshed with the first bevel gear (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210532270.1A CN114737729A (en) | 2022-05-17 | 2022-05-17 | Building air pipe's fire prevention parcel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210532270.1A CN114737729A (en) | 2022-05-17 | 2022-05-17 | Building air pipe's fire prevention parcel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114737729A true CN114737729A (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210532270.1A Pending CN114737729A (en) | 2022-05-17 | 2022-05-17 | Building air pipe's fire prevention parcel structure |
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| Country | Link |
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| CN (1) | CN114737729A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012072601A (en) * | 2010-09-29 | 2012-04-12 | Sanwa Shutter Corp | Connection part structure of fireproof panels |
| DE202013002196U1 (en) * | 2013-03-08 | 2013-04-24 | Werner Wildeboer | Fire protection device for a wall or ceiling for insertion into a ventilation duct |
| CN212673245U (en) * | 2020-05-25 | 2021-03-09 | 鑫蓝环保科技（昆山）有限公司 | Waste gas catalytic oxidation device |
| CN113028150A (en) * | 2021-04-21 | 2021-06-25 | 山西四建集团有限公司 | Supporting pipe installation bracket of civil construction |
| CN213712318U (en) * | 2020-11-10 | 2021-07-16 | 长沙知本新材料有限公司 | Air pipe with fireproof function |
| CN215646020U (en) * | 2021-09-02 | 2022-01-25 | 河北兹尔新材料科技有限公司 | Prefabricated fire prevention ventilation sleeve pipe |
-
2022
- 2022-05-17 CN CN202210532270.1A patent/CN114737729A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012072601A (en) * | 2010-09-29 | 2012-04-12 | Sanwa Shutter Corp | Connection part structure of fireproof panels |
| DE202013002196U1 (en) * | 2013-03-08 | 2013-04-24 | Werner Wildeboer | Fire protection device for a wall or ceiling for insertion into a ventilation duct |
| CN212673245U (en) * | 2020-05-25 | 2021-03-09 | 鑫蓝环保科技（昆山）有限公司 | Waste gas catalytic oxidation device |
| CN213712318U (en) * | 2020-11-10 | 2021-07-16 | 长沙知本新材料有限公司 | Air pipe with fireproof function |
| CN113028150A (en) * | 2021-04-21 | 2021-06-25 | 山西四建集团有限公司 | Supporting pipe installation bracket of civil construction |
| CN215646020U (en) * | 2021-09-02 | 2022-01-25 | 河北兹尔新材料科技有限公司 | Prefabricated fire prevention ventilation sleeve pipe |
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