CN111734277A - Fireproof door with good sealing performance - Google Patents
Fireproof door with good sealing performance Download PDFInfo
- Publication number
- CN111734277A CN111734277A CN202010730864.4A CN202010730864A CN111734277A CN 111734277 A CN111734277 A CN 111734277A CN 202010730864 A CN202010730864 A CN 202010730864A CN 111734277 A CN111734277 A CN 111734277A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- door leaf
- door
- rotating shaft
- sleeved
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
- E06B5/161—Profile members therefor
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/70—Door leaves
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
- E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
- E06B5/164—Sealing arrangements between the door or window and its frame, e.g. intumescent seals specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/20—Doors, windows, or like closures for special purposes; Border constructions therefor for insulation against noise
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
Abstract
The invention discloses a fireproof door with good sealing performance, which relates to the technical field of fireproof door processing and manufacturing, and aims to solve the problems that a traditional fireproof door cannot activate an alarm in time, reduce a gap between a door leaf and the ground, and cannot prevent flame spreading. The invention can alarm in time when a fire disaster happens, reduce the gap between the door leaf and the ground, prevent smoke dust from entering a room, and spray dry powder to prevent flame from spreading, thereby gaining time for rescue.
Description
Technical Field
The invention relates to the technical field of processing and manufacturing of fireproof doors, in particular to a fireproof door with good sealing performance.
Background
The fireproof door is a door which can meet the requirements of fire resistance, integrity and heat insulation within a certain time, and is a fireproof partition which is arranged between fireproof partitions, evacuation staircases, vertical shafts and the like and has certain fire resistance.
Traditional prevent fire door when taking place the conflagration, can not in time activate the siren, reduce the clearance between door leaf and the ground, block smog entering room, in case the flame gets into the room in addition, the door leaf is inside can not take corresponding measure to prevent stretching of flame, for this reason we provide a good prevent fire door of leakproofness.
Disclosure of Invention
The fireproof door with good sealing performance solves the problems that a traditional fireproof door cannot activate an alarm in time, reduce a gap between a door leaf and the ground and cannot prevent flame from spreading.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fireproof door with good sealing performance comprises a door leaf, wherein a fixed plate is fixedly connected inside the door leaf, a hydraulic cylinder is fixedly connected to the top of the fixed plate, a movable plate is fixedly connected to an output shaft of the hydraulic cylinder, a double-shaft motor is fixedly sleeved inside the movable plate, a first rotating shaft is fixedly connected to an output shaft of the double-shaft motor, a bearing is fixedly sleeved outside the first rotating shaft and positioned below the first rotating shaft, a connecting rod is fixedly connected to the left side of the bearing, an ejector rod is sleeved on the left side of the connecting rod, a first reciprocating screw rod is fixedly connected to the bottom of the first rotating shaft, a first thread sleeve is sleeved outside the first reciprocating screw rod, a connecting block is fixedly connected to the bottom of the first thread sleeve, a first bevel gear is fixedly sleeved outside the first rotating shaft and positioned above the first bevel gear, the top of the fixed plate is fixedly connected with a supporting rod, the top of the supporting rod is fixedly connected with a supporting bearing, a second reciprocating screw rod is sleeved inside the supporting bearing, a second thread sleeve is sleeved on the left side thread of the second reciprocating screw rod, a push plate is fixedly connected on the left side of the second thread sleeve, a second bevel gear is fixedly sleeved on the right side of the second reciprocating screw rod, the first bevel gear and the second bevel gear are in meshing transmission, the top of the fixed plate is rotatably connected with a second rotating shaft, a second gear is fixedly sleeved on the outer portion of the second rotating shaft, the first gear and the second gear are in meshing transmission, a ball valve is fixedly connected to the top of the second rotating shaft, a dry powder tank is fixedly connected to the inner wall of the top of the door leaf, a conveying pipe is fixedly connected to the bottom of the dry powder tank, a spray nozzle is fixedly connected to the, the top fixedly connected with cutting ferrule of overhead gage, two first springs of bottom fixedly connected with of overhead gage, the bottom fixedly connected with lower baffle of first spring, the left side fixedly connected with alarm of door leaf, the right side of alarm is connected with alarm shift knob.
Preferably, a first movable hole is formed in the left side of the door leaf, and the push plate movably penetrates through the second movable hole.
Preferably, a second movable hole is formed in the fixing plate, and the first rotating shaft movably penetrates through the second movable hole.
Preferably, a third movable hole is formed in the movable plate, and the double-shaft motor is fixedly sleeved inside the third movable hole.
Preferably, the left side of the connecting rod is fixedly connected with a second spring, the right side of the ejector rod is provided with a first placing groove, and the left side of the second spring is fixedly connected inside the first placing groove.
Preferably, the right side of the door leaf is fixedly connected with a door handle, one side of the door leaf is fixedly connected with two hinges, and one side of each hinge is fixedly connected with a fireproof door frame.
Preferably, two sliding blocks are fixedly connected to two sides of the upper baffle, two sliding grooves are formed in inner walls of two sides of the door leaf, and the sliding blocks are slidably sleeved inside the sliding grooves.
Preferably, the door leaf is of a multilayer structure, a fireproof steel plate layer is arranged on the surface of the door leaf, a sound insulation plate layer is arranged inside the fireproof steel plate layer, and a sealing strip is fixedly connected to the outer portion of the door leaf.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts the structure that a double-shaft motor, a hydraulic cylinder, an ejector rod, an alarm, a first reciprocating screw rod, a connecting block, a clamping sleeve, an upper baffle plate and the like are arranged, wherein the double-shaft motor drives the first reciprocating screw rod to rotate to drive the connecting block to rotate, when an output shaft of the hydraulic cylinder contracts, the ejector rod moves downwards to trigger a switch button of the alarm, and meanwhile, the connecting block is sleeved in the clamping sleeve to drive the upper baffle plate and the lower baffle plate to move downwards, so that the gap between a door leaf and the ground is reduced, and smoke dust is prevented from entering a room.
2. The invention adopts the structure that a double-shaft motor, a hydraulic cylinder, a first bevel gear, a second bevel gear, a first gear, a second reciprocating screw rod, a push plate nozzle and the like are arranged, wherein when an alarm sounds, the hydraulic cylinder rapidly pushes the double-shaft motor to move up, so that the first bevel gear is in meshing transmission with the second bevel gear, the first gear is in meshing transmission with the second gear, the first gear drives the second reciprocating screw rod to rotate, so that a push plate is pushed out of a first movable hole, and the second gear drives a second rotating shaft to rotate, so that a ball valve is opened, dry powder is sprayed out of the nozzle, and the spread of flames is prevented in time for rescue.
In conclusion, the device is novel in design and simple to operate, can give an alarm in time when a fire disaster occurs, reduces the gap between the door leaf and the ground, prevents smoke dust from entering a room, and simultaneously sprays dry powder to prevent flames from spreading so as to strive for time for rescue.
Drawings
Fig. 1 is a schematic front view of a fire door with good sealing performance according to the present invention;
figure 2 is a schematic side view of a fire rated door of the present invention;
figure 3 is an enlarged view of a portion of the fire door a with good sealing performance according to the present invention;
fig. 4 is a partially enlarged view of a fire door B according to the present invention.
In the figure: 1 dry powder pipe, 2 fireproof steel plate layers, 3 spray heads, 4 push plates, 5 second thread sleeves, 6 second reciprocating screw rods, 7 supporting bearings, 8 supporting rods, 9 fixing plates, 10 connecting rods, 11 ejector rods, 12 alarms, 13 alarm switch buttons, 14 clamping sleeves, 15 first springs, 16 upper baffle plates, 17 lower baffle plates, 18 connecting blocks, 19 first thread sleeves, 20 first reciprocating screw rods, 21 door handles, 22 bearings, 23 first rotating shafts, 24 hydraulic cylinders, 25 double-shaft motors, 26 moving plates, 27 conveying pipes, 28 sound insulation plate layers, 29 first gears, 30 ball valves, 31 first gears, 32 second rotating shafts, 33 second bevel gears, 34 first gears, 35 fireproof door frames, 36 hinges, 37 sealing strips and 38 door leaves.
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.
Referring to fig. 1-4, a fire door with good sealing performance includes a door leaf 38, a fixed plate 9 is fixedly connected inside the door leaf 28, a hydraulic cylinder 24 is fixedly connected on the top of the fixed plate 9, a moving plate 26 is fixedly connected on an output shaft of the hydraulic cylinder 24, a double-shaft motor 25 is fixedly sleeved inside the moving plate 26, a first rotating shaft 23 is fixedly connected on an output shaft of the double-shaft motor 25, a bearing 22 is fixedly sleeved outside the first rotating shaft 23 located below, a connecting rod 10 is fixedly connected on the left side of the bearing 22, a top rod 11 is sleeved on the left side of the connecting rod 10, a first reciprocating screw rod 20 is fixedly connected on the bottom of the first rotating shaft 23, a first thread sleeve 19 is sleeved on the outer thread of the first reciprocating screw rod 20, a connecting block 18 is fixedly connected on the bottom of the first thread sleeve 19, a first bevel gear 34 is fixedly sleeved on the outer portion of the, the top of the fixed plate 9 is fixedly connected with a supporting rod 8, the top of the supporting rod 8 is fixedly connected with a supporting bearing 7, the inside sleeve of the supporting bearing 7 is provided with a second reciprocating screw rod 6, the left side thread sleeve of the second reciprocating screw rod 6 is provided with a second thread sleeve 5, the left side of the second thread sleeve 5 is fixedly connected with a push plate 4, the right side of the second reciprocating screw rod 6 is fixedly provided with a second bevel gear 33, a first bevel gear 34 is in meshing transmission with the second bevel gear 33, the top of the fixed plate 9 is rotatably connected with a second rotating shaft 32, the outside of the second rotating shaft 32 is fixedly provided with a second gear 31, the first gear 29 is in meshing transmission with the second gear 31, the top of the second rotating shaft 32 is fixedly connected with a ball valve 30, the inner wall of the top of the door leaf 38 is fixedly connected with a dry powder tank 1, the bottom, the bottom sliding connection of door leaf 38 has overhead gage 16, the top fixedly connected with cutting ferrule 14 of overhead gage 16, two first springs 15 of bottom fixedly connected with of overhead gage 16, baffle 17 under the bottom fixedly connected with of first spring 15, the left side fixedly connected with alarm 12 of door leaf 38, the right side of alarm 12 is connected with alarm shift knob 13.
In this embodiment, a first movable hole is formed on the left side of the door leaf 38, and the push plate 4 movably penetrates through the second movable hole.
In this embodiment, the fixing plate 9 is provided with a second movable hole, and the first rotating shaft 23 movably penetrates through the second movable hole.
In this embodiment, the moving plate 26 is provided with a third moving hole, and the dual-shaft motor 25 is fixedly sleeved inside the third moving hole.
In this embodiment, the left side fixedly connected with second spring of connecting rod 22, first standing groove has been seted up on the right side of ejector pin 11, and the left side fixed connection of second spring is in the inside of first standing groove.
In this embodiment, the door handle 21 is fixedly connected to the right side of the door 38, two hinges 36 are fixedly connected to one side of the door 38, and the fireproof door frame 35 is fixedly connected to one side of the hinges 36.
In this embodiment, two sliding blocks are fixedly connected to two sides of the upper baffle 16, two sliding grooves are formed in inner walls of two sides of the door leaf 38, and the sliding blocks are slidably sleeved inside the sliding grooves.
In this embodiment, the door leaf 38 is a multilayer structure, and the surface of the door leaf 38 is provided with the fireproof steel plate layer 2, and the inside of the fireproof steel plate layer 2 is provided with the sound insulation plate layer 28, and the outside fixedly connected with sealing strip 37 of the door leaf 38.
The working principle is that firstly, the output shaft of the double-shaft motor 25 rotates to drive the first rotating shaft 23 to rotate, so as to drive the first reciprocating screw rod 20, the first bevel gear 32 and the first gear 34 to rotate, when a fire occurs, firstly, the output shaft of the hydraulic cylinder 24 contracts to drive the ejector rod 11 to trigger the alarm switch button 13 of the alarm 12, meanwhile, the connecting block 18 is sleeved inside the cutting sleeve 14, the first reciprocating screw rod 20 drives the first threaded sleeve 19 to move downwards, then the upper baffle plate 16 and the lower baffle plate 17 are driven to move downwards, so as to reduce the gap between the door leaf and the ground and prevent smoke dust from entering a room, then, the output shaft of the hydraulic cylinder 24 extends to drive the double-shaft motor 25 to move upwards, so that the first bevel gear 34 and the second bevel gear 33 are in meshed transmission, the first gear 29 and the second gear 31 are meshed transmission, the first bevel gear 34 and the second bevel gear 33 are, thereby drive second thread bush 5 and remove to the left, then push pedal 4 is pushed out first movable hole, and first gear 29 and the meshing transmission of second gear 31 to drive second pivot 32 and rotate, then open ball valve 30, the dry powder is via conveyer pipe 27, through the blowout of shower nozzle 3.
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. The fireproof door with good sealing performance comprises a door leaf (38) and is characterized in that a fixed plate (9) is fixedly connected inside the door leaf (28), a hydraulic cylinder (24) is fixedly connected to the top of the fixed plate (9), a movable plate (26) is fixedly connected to an output shaft of the hydraulic cylinder (24), a double-shaft motor (25) is fixedly sleeved inside the movable plate (26), a first rotating shaft (23) is fixedly connected to an output shaft of the double-shaft motor (25), a bearing (22) is fixedly sleeved outside the first rotating shaft (23) below the output shaft, a connecting rod (10) is fixedly connected to the left side of the bearing (22), an ejector rod (11) is sleeved on the left side of the connecting rod (10), a first reciprocating screw rod (20) is fixedly connected to the bottom of the first rotating shaft (23), and a first thread sleeve (19) is sleeved outside the first reciprocating screw rod (20), the bottom of the first threaded sleeve (19) is fixedly connected with a connecting block (18), the outer part of the first rotating shaft (23) positioned above is fixedly sleeved with a first bevel gear (34), the top of the first rotating shaft (23) positioned above is fixedly sleeved with a first gear (29), the top of the fixing plate (9) is fixedly connected with a supporting rod (8), the top of the supporting rod (8) is fixedly connected with a supporting bearing (7), the inside of the supporting bearing (7) is sleeved with a second reciprocating screw rod (6), the left threaded sleeve of the second reciprocating screw rod (6) is sleeved with a second threaded sleeve (5), the left side of the second threaded sleeve (5) is fixedly connected with a push plate (4), the right side of the second reciprocating screw rod (6) is fixedly sleeved with a second bevel gear (33), and the first bevel gear (34) is in meshing transmission with the second bevel gear (33), the top of the fixing plate (9) is rotatably connected with a second rotating shaft (32), a second gear (31) is fixedly sleeved outside the second rotating shaft (32), a first gear (29) and the second gear (31) are in meshing transmission, a ball valve (30) is fixedly connected to the top of the second rotating shaft (32), a dry powder tank (1) is fixedly connected to the inner wall of the top of the door leaf (38), a conveying pipe (27) is fixedly connected to the bottom of the dry powder tank (1), a spray head (3) is fixedly connected to the left side of the conveying pipe (27), an upper baffle plate (16) is slidably connected to the bottom of the door leaf (38), a clamping sleeve (14) is fixedly connected to the top of the upper baffle plate (16), two first springs (15) are fixedly connected to the bottom of the upper baffle plate (16), and a lower baffle plate (17) is fixedly connected to the bottom of the first springs (15, the left side of door leaf (38) fixedly connected with alarm (12), the right side of alarm (12) is connected with alarm shift knob (13).
2. The fire door with good sealing performance as claimed in claim 1, wherein a first moving hole is formed on the left side of the door leaf (38), and the push plate (4) movably penetrates through a second moving hole.
3. The fire door with good sealing performance as claimed in claim 1, wherein a second moving hole is formed in the fixing plate (9), and the first rotating shaft (23) movably penetrates through the second moving hole.
4. The fire door with good sealing performance as claimed in claim 1, wherein a third moving hole is formed on said moving plate (26), and said dual-shaft motor (25) is fixedly sleeved inside the third moving hole.
5. The fire door with good sealing performance according to claim 1, wherein a second spring is fixedly connected to the left side of the connecting rod (22), a first placing groove is formed in the right side of the top rod (11), and the left side of the second spring is fixedly connected to the inside of the first placing groove.
6. The fire door with good sealing performance as claimed in claim 1, wherein a door handle (21) is fixedly connected to the right side of the door leaf (38), two hinges (36) are fixedly connected to one side of the door leaf (38), and a fire door frame (35) is fixedly connected to one side of each hinge (36).
7. The fire door with good sealing performance as claimed in claim 1, wherein two sliding blocks are fixedly connected to two sides of the upper baffle (16), two sliding grooves are formed in inner walls of two sides of the door leaf (38), and the sliding blocks are slidably sleeved inside the sliding grooves.
8. The fire door with good sealing performance as claimed in claim 1, wherein the door leaf (38) is of a multi-layer structure, the surface of the door leaf (38) is provided with a fireproof steel plate layer (2), a sound insulation plate layer (28) is arranged inside the fireproof steel plate layer (2), and a sealing strip (37) is fixedly connected to the outside of the door leaf (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010730864.4A CN111734277B (en) | 2020-07-27 | 2020-07-27 | Fireproof door with good sealing performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010730864.4A CN111734277B (en) | 2020-07-27 | 2020-07-27 | Fireproof door with good sealing performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111734277A true CN111734277A (en) | 2020-10-02 |
| CN111734277B CN111734277B (en) | 2022-06-03 |
Family
ID=72657891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010730864.4A Active CN111734277B (en) | 2020-07-27 | 2020-07-27 | Fireproof door with good sealing performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111734277B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412285A (en) * | 2020-10-28 | 2021-02-26 | 浙江齐嘉消防科技有限公司 | Smoke-isolating purifying fireproof door |
| CN113794117A (en) * | 2021-08-10 | 2021-12-14 | 胡宏美 | Current-limiting type electrical fireproof short-circuit protection device |
| CN115107961A (en) * | 2022-08-06 | 2022-09-27 | 中国人民解放军海军特色医学中心 | Movable underwater living cabin |
| CN115478767A (en) * | 2022-09-29 | 2022-12-16 | 高乐 | Fire-proof isolation door with fire extinguishing function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208280850U (en) * | 2018-05-30 | 2018-12-25 | 深圳市恒昌达实业有限公司 | Fire resistant doorsets with fire-extinguishing function concurrently |
| CN210020914U (en) * | 2019-05-15 | 2020-02-07 | 汪允涛 | Close range fire extinguishing device for fire extinguishing door capable of preventing flame from spreading |
| CN210067896U (en) * | 2019-05-10 | 2020-02-14 | 任丘市祥龙消防设备有限公司 | Novel high-efficient environmental protection is thermal-insulated prevents fire door |
-
2020
- 2020-07-27 CN CN202010730864.4A patent/CN111734277B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208280850U (en) * | 2018-05-30 | 2018-12-25 | 深圳市恒昌达实业有限公司 | Fire resistant doorsets with fire-extinguishing function concurrently |
| CN210067896U (en) * | 2019-05-10 | 2020-02-14 | 任丘市祥龙消防设备有限公司 | Novel high-efficient environmental protection is thermal-insulated prevents fire door |
| CN210020914U (en) * | 2019-05-15 | 2020-02-07 | 汪允涛 | Close range fire extinguishing device for fire extinguishing door capable of preventing flame from spreading |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112412285A (en) * | 2020-10-28 | 2021-02-26 | 浙江齐嘉消防科技有限公司 | Smoke-isolating purifying fireproof door |
| CN112412285B (en) * | 2020-10-28 | 2022-04-29 | 浙江齐嘉消防科技有限公司 | Smoke-isolating purifying fireproof door |
| CN113794117A (en) * | 2021-08-10 | 2021-12-14 | 胡宏美 | Current-limiting type electrical fireproof short-circuit protection device |
| CN115107961A (en) * | 2022-08-06 | 2022-09-27 | 中国人民解放军海军特色医学中心 | Movable underwater living cabin |
| CN115478767A (en) * | 2022-09-29 | 2022-12-16 | 高乐 | Fire-proof isolation door with fire extinguishing function |
| CN115478767B (en) * | 2022-09-29 | 2024-02-09 | 浙江神鼎门业有限公司 | Fireproof isolation door with fire extinguishing function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111734277B (en) | 2022-06-03 |
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