CN110833664A - Fire-fighting equipment based on fire extinguishing by suffocation - Google Patents
Fire-fighting equipment based on fire extinguishing by suffocation Download PDFInfo
- Publication number
- CN110833664A CN110833664A CN201911192518.9A CN201911192518A CN110833664A CN 110833664 A CN110833664 A CN 110833664A CN 201911192518 A CN201911192518 A CN 201911192518A CN 110833664 A CN110833664 A CN 110833664A
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- fire
- fixed cylinder
- fixed shell
- counterweight ball
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
- A62C99/0027—Carbon dioxide extinguishers
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention discloses fire-fighting equipment based on a fire extinguishing method by suffocation, which comprises a fixed shell, wherein a fixed cylinder and a plurality of sliding seats are arranged in the fixed shell, the fixed cylinder comprises a vertical section and an inclined section, the inclined section penetrates through the bottom wall of the fixed shell and extends to the outside of the fixed shell, a plurality of sections of sliding rails are arranged at the inclined section of the fixed cylinder, a second counterweight ball is slidably arranged on each section of sliding rail, a permanent magnet is fixedly arranged at the inner top wall of the fixed cylinder, and a first counterweight ball is adsorbed on the permanent magnet. The invention has simple structure, when the object in the show window display cabinet is ignited, the flame retardant cloth can automatically pop out and cover the object after being completely unfolded, thereby isolating the object from contacting with air, simultaneously, the ferromagnetic plate can seal the ventilation opening, and a large amount of flame retardant gas is sprayed into the display cabinet from the air outlet, so that the oxygen in the show window display cabinet can not be supplemented, thereby achieving the purpose of suffocation type fire extinguishing.
Description
Technical Field
The invention relates to the technical field of fire extinguishing equipment, in particular to fire extinguishing equipment based on a fire extinguishing method by suffocation.
Background
At present, in order to attract customers, a large number of show window display cabinets are often installed in many markets to display clothes, mother and infant articles, jewelry, bags and other articles in the markets, and a spotlight or a string light is also installed as a supplementary light source to increase the display effect, and as decoration, a carpet is laid or a background wall is built in the show window display cabinets.
In cold weather and when the indoor and outdoor temperature difference is large, a layer of water mist can be generated on glass on the show window display cabinet to influence the ornamental effect, so that heating air can be introduced into the show window display cabinet in many high-grade markets to heat the glass so as to eliminate the influence of the temperature difference, connecting wires in the show window display cabinet are generally hidden under a carpet or fixed behind a background wall, some string lamps can be directly wound on a display table or hung on a display product, the lamps can generate heat inevitably after being opened for a long time, and the heat generation of aged electric wires or joints is more serious, so that the fire extinguishing equipment has great potential safety hazards.
Disclosure of Invention
The invention aims to solve the defects that in the prior art, a show window display cabinet is poor in heat dissipation performance, and a fire is easily caused after heat generated at a lamp and a wire joint is accumulated, and provides fire-fighting equipment based on a fire extinguishing method by suffocation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fire-fighting equipment based on a fire extinguishing method by suffocation comprises a fixed shell, wherein a fixed cylinder and a plurality of sliding seats are arranged in the fixed shell, the sliding seats are symmetrically distributed about the axis of the fixed cylinder, the fixed cylinder comprises a vertical section and an inclined section, the inclined section penetrates through the bottom wall of the fixed shell and extends out of the fixed shell, a plurality of sections of sliding rails are arranged at the inclined section of the fixed cylinder, a second counterweight ball is slidably mounted on each section of sliding rail, a permanent magnet is fixedly arranged at the inner top wall of the fixed cylinder, a first counterweight ball is adsorbed on the permanent magnet, and flame-retardant cloth is bonded on the first counterweight ball and the second counterweight balls together;
the air-permeable sliding seat is characterized in that each sliding seat is elastically connected with a ferromagnetic plate through a spring, a plurality of air vents and air outlets are formed in the fixed shell, the number of the air vents is the same as that of the ferromagnetic plates, the cross-sectional area of each air vent is smaller than that of the corresponding ferromagnetic plate, a sealing box is fixedly arranged on the lower surface of each sliding seat, a plurality of air-permeable openings are symmetrically formed in the side wall of each sealing box, and a sealing mechanism is arranged at each air-permeable opening.
Preferably, each sealing mechanism comprises a blocking plate rotatably mounted on the side wall of the corresponding sealing box, the upper end of each blocking plate is provided with a slot, a clamping plate is arranged in each slot, and the upper end of each clamping plate is fixedly connected with the ferromagnetic plate corresponding to the corresponding position through a metal pull rope.
Preferably, every section the slide rail all includes bears the weight of the base and welds two spacing borders on bearing the weight of the base, every two draw-in grooves have all been seted up to the equal symmetry of lower extreme of second counter weight ball and through draw-in groove and the spacing border joint that corresponds.
The weight of the first counterweight ball is less than the sum of the weights of the second counterweight balls, and one side of the slide rail, which is connected with the second counterweight balls, is a rough surface.
The invention has the beneficial effects that:
1. the fixed section of thick bamboo comprises slope section and vertical section to the contained angle between slope section and the fixed shell diapire is less, consequently when fire-retardant cloth falls to the slope section from vertical section, its self can be unfolded completely, thereby increases the coverage area.
2. The sum of the gravity of the second counterweight ball is larger than that of the first counterweight ball, so that the flame-retardant cloth can be automatically stretched in the falling process, and the flame-retardant cloth can be prevented from being furled to the center in the falling process.
3. Through the arrangement of the ferromagnetic plate, the spring and the permanent magnet, after the permanent magnet is demagnetized, the ferromagnetic plate can be quickly pulled to the lower part of the ventilation opening by the spring to seal the ventilation opening, so that the exchange of the gas in the show cabinet of the show window and the outside air is blocked, and the purpose of stifling fire extinguishing is achieved.
4. When the ferromagnetic plate slides towards the direction of the ventilation opening, the metal pull rope can be pulled, so that the clamping plate is moved out of the slot, and gas generated by decomposition of the dry powder extinguishing agent, such as carbon dioxide or nitrogen, can be sprayed out from the air outlet to help to extinguish fire.
5. Through set up the draw-in groove on the second counter weight ball and set up the spacing border corresponding with the draw-in groove on the slide rail, can make the restriction to the movement track of second counter weight ball, guarantee that the second counter weight ball slides along the slide rail all the time until it follows the terminal roll-off of slide rail.
6. Through setting up deep bead and spacing groove, can change gaseous flow direction, make fire-retardant gas move to air outlet department sooner to also can reduce the energy loss of fire-retardant gas when fixed shell inside flows, guarantee that fire-retardant gas still has great velocity of flow after moving to the show window show cupboard.
In conclusion, the fire-retardant cloth has a simple structure, when the articles in the show window display cabinet are ignited, the fire-retardant cloth can automatically pop out and cover the articles after being unfolded completely, so that the contact between the articles and air is isolated, the ventilation opening is sealed by the ferromagnetic plate, and a large amount of fire-retardant gas is sprayed into the display cabinet from the air outlet, so that oxygen in the show window display cabinet cannot be supplemented, and the purpose of extinguishing fire by suffocation is achieved.
Drawings
FIG. 1 is a schematic structural diagram of a fire fighting equipment based on a fire extinguishing by suffocation according to the present invention;
FIG. 2 is a schematic structural diagram of fire-fighting equipment based on a fire extinguishing by suffocation when releasing the fire-retardant cloth;
FIG. 3 is an enlarged view of FIG. 1 at A;
fig. 4 is a schematic structural view of a joint between a slide rail and a second counterweight ball in the fire fighting equipment based on the fire extinguishing by suffocation.
In the figure: the device comprises a fixed shell 1, a ventilation port 2, a ferromagnetic plate 3, a permanent magnet 4, a first counterweight ball 5, a fixed cylinder 6, a sliding seat 7, a sealing box 8, a ventilation port 801, an air outlet 9, a damp-proof plate 10, a second counterweight ball 11, a clamping groove 1101, flame-retardant cloth 12, a wind shield 13, a barrier plate 14, a limiting groove 15, a rotation stopping sleeve 16, a clamping plate 17, a sliding rail 18 and a limiting edge 1801.
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-fighting equipment based on a fire extinguishing method by suffocation, comprising a fixed housing 1, a fixed cylinder 6 and a plurality of sliding seats 7 are arranged in the fixed housing 1, the plurality of sliding seats 7 are symmetrically distributed about the axis of the fixed cylinder 6, the fixed cylinder 6 comprises a vertical section and an inclined section, the inclined section penetrates through the bottom wall of the fixed housing 1 and extends to the outside of the fixed housing 1, a plurality of sections of sliding rails 18 are arranged at the inclined section of the fixed cylinder 6, a second counterweight ball 11 is slidably mounted on each section of sliding rail 18, a permanent magnet 4 is fixedly arranged at the inner top wall of the fixed cylinder 6, the permanent magnet 4 adsorbs a first counterweight ball 5, the first counterweight ball 5 is made of ferromagnetic metal, the second counterweight ball 11 is made of alloy and has no ferromagnetic property, a flame retardant cloth 12 is jointly bonded on the first counterweight ball 5 and the plurality of second counterweight balls 11, under the action of gravity of the plurality of second counterweight balls 11, the flame-retardant cloth 12 is umbrella-shaped;
each sliding seat 7 is connected with a ferromagnetic plate 3 through a spring, a plurality of ventilation ports 2 and air outlets 9 are formed in the fixed shell 1, the number of the ventilation ports 2 is the same as that of the ferromagnetic plates 3, the cross-sectional area of each ventilation port 2 is smaller than that of the corresponding ferromagnetic plate 3, a sealing box 8 is fixedly arranged on the lower surface of each sliding seat 7, a plurality of ventilation ports 801 are symmetrically formed in the side wall of each sealing box 8, a sealing mechanism is arranged at the ventilation ports 801, and a moisture-proof plate 10 is fixed in each sealing box 8 and used for containing a dry powder extinguishing agent;
in the initial state, the spring is in a stretching state, when the spring returns to the natural state from the stretching state, the ferromagnetic plate 3 is just under the ventilation port 2 and completely covers the corresponding ventilation port 2, the upper surface of the ferromagnetic plate 3 is provided with an elastic sealing layer for sealing the ventilation port 2, and the elastic sealing layer can use rubber or metal rubber components as a lining core;
the outer side wall of the fixed cylinder 6 is circumferentially provided with a plurality of wind shields 13, the positions of the wind shields 13 correspond to the positions of the ventilation openings 801, and the wind shields 13 play a role in assisting airflow to flow to the air outlets 9.
In the invention, each sealing mechanism comprises a blocking plate 14 which is rotatably arranged on the side wall of the corresponding sealing box 8, the upper end of each blocking plate 14 is provided with a slot, a clamping plate 17 is arranged in each slot, and the upper end of each clamping plate 17 is fixedly connected with the ferromagnetic plate 3 corresponding to the position of the corresponding ferromagnetic plate through a metal pull rope;
the outer side wall of the seal box 8 is also fixedly provided with a rotation stopping sleeve 16, the rotation stopping sleeve 16 is sleeved in the middle of the clamping plate 17 and can slide relative to the clamping plate 17, and when the clamping plate 17 is pulled by the metal pull rope to move upwards but not move out of the slot, the rotation stopping sleeve 16 can enable the clamping plate 17 to be in a vertical state all the time so as to avoid increasing the friction force between the inclined clamping plate 17 and the side wall of the slot;
a plurality of limiting grooves 15 are formed in the outer side wall of the seal box 8, the limiting grooves 15 are used for limiting the rotation angle of the blocking plate 14, and the direction of airflow flowing out of the ventilation port 801 can be changed by changing the angle.
Each section of sliding rail 18 comprises a bearing base and two limiting edges 1801 welded on the bearing base, wherein two clamping grooves 1101 are symmetrically formed in the lower end of each second counterweight ball 11, and the lower end of each second counterweight ball is connected with the corresponding limiting edges 1801 in a clamping mode through the clamping grooves 1101.
The weight of the first counterweight ball 5 is less than the sum of the weights of the second counterweight balls 11, one side of the slide rail 18, which is connected with the second counterweight balls 11, is a rough surface, and when the slide rail 18 is not separated, the falling speed of the first counterweight ball 5 is greater than that of the second counterweight balls 11.
When the dry powder extinguishing device is used, the fixed shell 1 is arranged above an easily-ignited point, sufficient dry powder extinguishing agent is placed on the moisture-proof plate 10 in the sealing box 8, then the clamping plate 17 is inserted into the slots on the rotation stopping sleeve 16 and the blocking plate 14, so that the sealing box 8 is in a sealing state, and the heat-resistant rubber ring can be fixed on one side, close to the ventilation port 801, of the blocking plate 14, so that the sealing effect is enhanced; a ventilation fan (not shown) can be arranged above the ventilation opening 2, and in low-temperature weather, because the temperature difference between the indoor and outdoor is large, condensed water can be generated on the glass of the show window display cabinet to influence the sight of people, so that hot air can be fed into the show window display cabinet through the ventilation fan, and the temperature inside and outside the glass is the same;
in the equipment, the permanent magnet 4 is a neodymium iron boron permanent magnet, the Curie temperature of the permanent magnet is about 312 ℃, in an initial state, due to the magnetic force action of the permanent magnet 4, the ferromagnetic plate 3 can overcome the deformation force of the spring and is close to the fixed cylinder 6, so that the ferromagnetic plate 3 can be staggered with the scavenging port 2 to ensure the normal circulation of air, the first counterweight ball 5 can be adsorbed at the lower surface of the permanent magnet 4, and the second counterweight ball 11 naturally slides down along the slide rail 18 under the action of gravity, so that the flame retardant cloth 12 is umbrella-shaped;
when a fire breaks out in the showcase, the ambient temperature can be rapidly raised to more than 400 ℃ which is far higher than the Curie temperature of the permanent magnet 4, so that the permanent magnet 4 can be rapidly demagnetized, under the action of gravity, the first counterweight ball 5 will fall rapidly, the flame retardant cloth 12 is no longer in a tight state, the second counterweight ball 11 will also slide down along the slide rail 18, because the contact surface between the slide rail 18 and the second weight ball 11 is rough, the falling speed of the second weight ball 11 is lower than that of the first weight ball 5, when the second counterweight ball 11 moves to the tail end of the slide rail 18, the flame retardant cloth 12 is turned upwards to be inverted umbrella-shaped and is completely unfolded, since the sum of the gravity of the second counterweight ball 11 is larger than the gravity of the first counterweight ball 5, after the second counterweight ball 11 is separated from the slide rail 18, the flame-retardant cloth 12 turns into an umbrella shape, thereby covering the burning objects and isolating the burning objects from contacting with air and other objects;
it should be noted that the included angle between the inclined section of the fixed cylinder 6 and the bottom wall of the fixed housing 1 should be as small as possible (the included angle is an acute angle, and the second counterweight ball 11 can still slide downward against the friction force after the angle is adjusted), so as to ensure that the flame-retardant cloth 12 is completely stretched; the sum of the gravity of the second weight ball 11 is larger than the gravity of the first weight ball 5, so that the flame-retardant cloth 12 is automatically stretched during the falling process, and the flame-retardant cloth 12 is prevented from being gathered toward the center during the falling process.
In addition, under the action of the spring, the ferromagnetic plate 3 moves to the lower part of the ventilation port 2 rapidly to seal the ventilation port 2, so that the inside of the show window showcase cannot exchange gas with the outside through the ventilation fan, namely oxygen required by combustion cannot be obtained, and the purpose of suffocation type fire extinguishing is achieved;
with the rise of the temperature, the dry powder fire extinguishing agent is completely decomposed, the generated inert gas and water vapor are accumulated in the sealing box 8, when the ferromagnetic plate 3 slides, the ferromagnetic plate can drive the metal pull rope to move, the lower end of the metal pull rope can move upwards due to the limitation of the sliding seat 7, so that the clamping plate 17 is pulled out from the slot, the gas in the sealing box 8 can be sprayed out from the ventilation port 801 and flows into the show window display cabinet from the air outlet 9, and the effects of extinguishing fire and reducing temperature are achieved.
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 (4)
1. A fire-fighting equipment based on a fire extinguishing method by suffocation comprises a fixed shell (1) and is characterized in that a fixed cylinder (6) and a plurality of sliding seats (7) are arranged in the fixed shell (1), the fixed cylinder (6) comprises a vertical section and an inclined section, the inclined section penetrates through the bottom wall of the fixed shell (1) and extends to the outside of the fixed shell (1), a plurality of sections of sliding rails (18) are arranged at the inclined section of the fixed cylinder (6), a second counterweight ball (11) is slidably mounted on each section of sliding rail (18), a permanent magnet (4) is fixedly arranged at the inner top wall of the fixed cylinder (6), a first counterweight ball (5) is adsorbed on the permanent magnet (4), and a flame-retardant cloth (12) is bonded on the first counterweight ball (5) and the second counterweight balls (11);
every all be connected with ferromagnetic plate (3) through the spring bullet on sliding seat (7), a plurality of scavenge ports (2) and air outlet (9) have been seted up on fixed shell (1), and the quantity of scavenge port (2) is the same with the quantity of ferromagnetic plate (3), every sliding seat (7)'s lower surface all fixedly is provided with seal box (8), every equal symmetry has been seted up a plurality of ventilative mouths (801) on the lateral wall of seal box (8) and is equipped with sealing mechanism in ventilative mouthful (801) department.
2. A fire fighting equipment according to claim 1 characterized by that each sealing mechanism comprises a blocking plate (14) rotatably mounted on the side wall of the corresponding sealed box (8), the upper end of each blocking plate (14) is provided with a slot and a clamping plate (17) is arranged in the slot, and the upper end of the clamping plate (17) is fixedly connected with the ferromagnetic plate (3) in the corresponding position through a metal pull rope.
3. A fire fighting equipment according to claim 1, characterized in that each slide rail (18) comprises a bearing base and two limiting edges (1801) welded on the bearing base, and the lower end of each second counterweight ball (11) is symmetrically provided with two clamping grooves (1101) and is clamped with the corresponding limiting edges (1801) through the clamping grooves (1101).
4. A fire fighting apparatus according to claim 1, characterized in that the weight of the first weight balls (5) is less than the sum of the weights of the second weight balls (11), and the side of the slide rail (18) that is connected to the second weight balls (11) is roughened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192518.9A CN110833664B (en) | 2019-11-28 | 2019-11-28 | Fire-fighting equipment based on fire extinguishing by suffocation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911192518.9A CN110833664B (en) | 2019-11-28 | 2019-11-28 | Fire-fighting equipment based on fire extinguishing by suffocation |
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| CN110833664A true CN110833664A (en) | 2020-02-25 |
| CN110833664B CN110833664B (en) | 2021-01-05 |
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| CN205400534U (en) * | 2016-03-24 | 2016-07-27 | 马玉涛 | Construct high -rise door and window firebreak device |
| CN205964766U (en) * | 2016-08-08 | 2017-02-22 | 深圳市壁虎岛安全救援设备有限公司 | Fire blanket of convenient operation |
| CN106540392A (en) * | 2017-01-03 | 2017-03-29 | 曹伟 | Lifting fire smothering blanket fire fighting truck |
| CN206285374U (en) * | 2016-11-29 | 2017-06-30 | 深圳职业技术学院 | One kind fire prevention bookshelf |
| CN206964918U (en) * | 2017-04-28 | 2018-02-06 | 黑龙江省玺宇消防科技开发有限公司 | A kind of extinguishing device for High-low voltage switch cabinet |
| CN109279235A (en) * | 2018-11-27 | 2019-01-29 | 叶烨 | A kind of fire-retardant dustbin of asphyxia type |
| CN208738691U (en) * | 2018-08-13 | 2019-04-12 | 河南万锦电气设备有限公司 | A kind of power distribution cabinet with fire safety function |
| CN208970986U (en) * | 2018-10-16 | 2019-06-11 | 贵州森阳科技有限公司 | A kind of band fire prevention power network switch case |
| CN110420419A (en) * | 2019-08-15 | 2019-11-08 | 常森柏 | A kind of hidden indoor fire-fighting extinguishing device |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3441971A1 (en) * | 1984-11-16 | 1986-05-22 | Sanbloc GmbH Installations-Fertigbau, 8120 Weilheim | Fire-protection apparatus |
| CN1200303A (en) * | 1997-05-22 | 1998-12-02 | 黄添财 | Apparatus for escaping with one's life from window or door when fire occurs |
| CN204932666U (en) * | 2015-09-07 | 2016-01-06 | 姜平 | A kind of fire extinguishing drop cloth |
| CN205400534U (en) * | 2016-03-24 | 2016-07-27 | 马玉涛 | Construct high -rise door and window firebreak device |
| CN205964766U (en) * | 2016-08-08 | 2017-02-22 | 深圳市壁虎岛安全救援设备有限公司 | Fire blanket of convenient operation |
| CN206285374U (en) * | 2016-11-29 | 2017-06-30 | 深圳职业技术学院 | One kind fire prevention bookshelf |
| CN106540392A (en) * | 2017-01-03 | 2017-03-29 | 曹伟 | Lifting fire smothering blanket fire fighting truck |
| CN206964918U (en) * | 2017-04-28 | 2018-02-06 | 黑龙江省玺宇消防科技开发有限公司 | A kind of extinguishing device for High-low voltage switch cabinet |
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| CN109279235A (en) * | 2018-11-27 | 2019-01-29 | 叶烨 | A kind of fire-retardant dustbin of asphyxia type |
| CN110420419A (en) * | 2019-08-15 | 2019-11-08 | 常森柏 | A kind of hidden indoor fire-fighting extinguishing device |
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| CN110833664B (en) | 2021-01-05 |
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Effective date of registration: 20201218 Address after: No.477 Yongle Road, Wangdian Town, Xiuzhou District, Jiaxing City, Zhejiang Province Applicant after: Zhejiang Otto Electric Co.,Ltd. Address before: 121000 No.20 Jinshan street, Taihe District, Jinzhou City, Liaoning Province Applicant before: Chang Senbai |
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Application publication date: 20200225 Assignee: Zhejiang sonar Intelligent Technology Co.,Ltd. Assignor: Zhejiang Otto Electric Co.,Ltd. Contract record no.: X2021330000671 Denomination of invention: A fire extinguishing equipment based on suffocation fire extinguishing method Granted publication date: 20210105 License type: Common License Record date: 20211109 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A fire-fighting equipment based on suffocation fire-extinguishing method Effective date of registration: 20220907 Granted publication date: 20210105 Pledgee: Zhejiang Hecheng Rural Commercial Bank Co.,Ltd. Wangdian Sub branch Pledgor: Zhejiang Otto Electric Co.,Ltd. Registration number: Y2022330002152 |