CN108211187B - Large-traffic adjustable fire control watering shower nozzle - Google Patents
Large-traffic adjustable fire control watering shower nozzle Download PDFInfo
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- CN108211187B CN108211187B CN201810073253.XA CN201810073253A CN108211187B CN 108211187 B CN108211187 B CN 108211187B CN 201810073253 A CN201810073253 A CN 201810073253A CN 108211187 B CN108211187 B CN 108211187B
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- elastic
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- 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
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
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- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention provides a large-flow adjustable fire-fighting sprinkler head which is mainly used for large-flow fire-fighting conditions with large fire conditions in the actual use process. And when the fire source between the left and right sides, be close to the flexible drive arrangement of fire source both sides and can carry out shrink control to corresponding connecting link simultaneously to the realization carries out pertinence to put out a fire to this direction. And the elastic support cover that the cover was located and is connected the chain plays the elastic support effect to connecting link, can strengthen the support intensity of connecting the chain to the splash box, makes the splash box stably block and lead large-traffic rivers, realizes accurate injection and puts out a fire.
Description
Technical Field
The invention relates to the field of fire fighting equipment, in particular to a large-flow adjustable fire fighting sprinkler head.
Background
The automatic water-spraying fire-extinguishing system of the fire-fighting nozzle automatically sprays water to extinguish fire when a fire disaster occurs, has the fireproof effects of preventing flame from penetrating, absorbing heat and isolating smoke, and can extinguish the fire at the early stage of the high-risk fire, so that a plurality of buildings such as large-scale factory buildings, workshops, halls, movie theaters and the like are provided with the fire-fighting nozzle. However, in the fire-fighting nozzle in the prior art, because of adopting impact type water spraying or because of higher rotation speed, the water atomization phenomenon sprayed by the nozzle is serious, the water spraying particles are small, the spraying flow is smaller, the smaller the water particles are, the smaller the capability of penetrating fire hot air flow to reach the surface of a combustion object is, the lower the fire extinguishing capability is, the height of the nozzle which can be installed during engineering installation is low, and the targeted water spraying and fire extinguishing can not be carried out on a certain fire point in real time, so that the fire-fighting nozzle has certain limitations in use.
Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.
Disclosure of Invention
The invention aims to provide the large-flow adjustable fire-fighting sprinkler head which is stable in structure, can automatically sense the direction of a fire condition to extinguish fire accurately at a large flow, and is stable and efficient in fire extinguishing.
In order to achieve the purpose, the invention adopts the following technical scheme:
a large-flow adjustable fire-fighting sprinkler head comprises a sprinkler head main body positioned above, a splash plate positioned below, a connecting frame connected between the sprinkler head main body and the splash plate, and glass balls positioned among the sprinkler head main body, the splash plate and the connecting frame; the temperature sensor is used for sensing the temperature in the corresponding direction and transmitting a temperature signal to the controller; the number of the connecting frames, the number of the telescopic driving devices and the number of the temperature sensors are four; the sprayer body is provided with a bearing plate which is horizontally arranged and connected with a ceiling;
the four connecting frames are uniformly distributed around the glass ball; the connecting frame comprises a connecting chain penetrating through the bearing plate and an elastic supporting sleeve sleeved on the connecting chain; the bearing plate is provided with a through hole for the penetration of each connecting chain; the connecting chain comprises an upper chain section above the bearing plate and a lower chain section below the bearing plate; the elastic support sleeve is sleeved on the lower chain section and supported between the lower surface of the bearing plate and the upper surface of the splash plate; the elastic support sleeve is provided with a sliding channel for the lower chain section to slide through; the connecting chain comprises a plurality of female chain links, a plurality of male chain links alternately connected with the female chain links, upper end chain links at the upper end, and lower end chain links at the lower end and connected with the splash pan; the connecting chain is provided with an inner side surface facing the glass ball, an outer side surface facing the opposite direction and a connecting side surface connected between the inner side surface and the outer side surface; the upper end of the inner side surface of the female chain link is provided with an upper pivoting groove pivoted with the upper male chain link, and the lower end of the inner side surface of the female chain link is provided with a lower pivoting groove pivoted with the lower male chain link or the lower end chain link; the upper pivoting grooves are pivoted with the lower ends of the corresponding male chain links through horizontally arranged upper horizontal rotating shafts, and the upper horizontal rotating shafts are perpendicular to the connecting side surface of the same connecting chain; the lower pivoting grooves are pivoted with the upper ends of the corresponding male chain links or the lower end chain links through horizontally arranged lower horizontal rotating shafts, and the lower horizontal rotating shafts are perpendicular to the connecting side face of the same connecting chain; the upper end of the outer side surface of the male chain link is provided with a male elastic clamping piece which extends upwards and is clamped on the outer side surface of the corresponding female chain link; the lower end chain link is pivoted with the upper surface of the water splashing disc through a pivoting ball, and a spherical groove matched with the pivoting ball is formed in the upper surface of the water splashing disc;
the telescopic driving device comprises a gear positioned on the inner side of the corresponding connecting chain and meshed with the corresponding upper chain section, a supporting frame arranged on the upper surface of the bearing plate and used for supporting the corresponding gear, and a motor used for driving the corresponding gear to rotate; the gear is connected with the support frame through a support rotating shaft, and the support rotating shaft is parallel to the upper horizontal rotating shaft of the corresponding connecting chain; the upper end chain link bypasses the corresponding gear and is connected to the upper surface of the bearing plate through a pre-tightening tension spring;
the four temperature sensors are evenly distributed around the glass ball.
The lower chain section is gradually inclined from top to bottom towards the glass ball.
The four temperature sensors are respectively correspondingly positioned at the outer sides of the connecting frames.
The male chain link is provided with a male bayonet for the corresponding female elastic clamping piece to be clamped in, and the female chain link is provided with a female bayonet for the corresponding male elastic clamping piece to be clamped in.
A first movable gap for the movement of the female elastic card is formed between the upper end of the female elastic card and the upper end of the corresponding male bayonet, and a second movable gap for the movement of the male elastic card is formed between the upper end of the male elastic card and the upper end of the corresponding female bayonet.
After the technical scheme is adopted, the large-flow adjustable fire-fighting sprinkler head is mainly used for large-flow fire extinguishing conditions with larger fire conditions in the actual use process, when a fire breaks, the temperature sensor on the bearing plate senses the temperature of a fire source and transmits a signal to the controller, the controller receives the signal of the temperature sensor and then controls the motor of the telescopic driving device in the direction opposite to the fire source to start, and the motor drives the corresponding gear to rotate so as to pull the corresponding connecting chain upwards. For example, the fire source is located on the left side, a motor of the telescopic driving device on the right side can drive a corresponding gear to rotate, a lower chain section on the left side bends towards the upper right side through an upper horizontal rotating shaft and a lower horizontal rotating shaft and extrudes a corresponding elastic supporting sleeve, the elastic supporting sleeve supports the lower chain section on the left side, the lower chain section on the right side is pulled upwards to shorten, the lower end of the lower chain section on the right side gradually swings towards the right side and extrudes a corresponding female elastic clamping piece and a corresponding male elastic clamping piece, the corresponding female elastic clamping piece and the male elastic clamping piece elastically deform, the elastic force of each female elastic clamping piece and the male elastic clamping piece supports the splash pan, meanwhile, the lower chain section on the right side elastically extrudes a corresponding elastic supporting sleeve, the elastic supporting sleeve supports the lower chain section on the right side, each corresponding pivot ball and spherical groove are matched to rotate freely, the splash pan gradually inclines upwards, a pre-tightening tension spring contracts, finally, the splash pan forms an inclined state with a lower left side and a higher right side, water flow flows to the splash pan and is blocked by the splash pan by a spray water source, and is sprayed to the left side until the left side is extinguished, and the left side is connected with the water spray rack. When the fire source is in the direction between two adjacent flexible drive arrangement, two other flexible drive arrangement can cooperate the corresponding link of drive and adjust the inclination that splashes the water tray, can make the least significant end that splashes the water tray towards the fire source direction equally to the realization carries out the purpose of pertinence fire extinguishing to arbitrary direction. And the elastic support cover that the connection chain was located to the cover plays the elastic support effect to the connection chain, can strengthen the support intensity of connection chain to the splash box, makes the splash box stably block and lead large-traffic rivers, realizes accurate injection and puts out a fire. And the pre-tightening spring can pre-tighten the connecting chain, so that the connecting chain always keeps a state of bypassing the corresponding gear to be engaged, and meanwhile, the connecting chain can keep the supporting force for the splash pan at any time. Compared with the prior art, the large-flow adjustable fire-fighting sprinkler head can automatically sense the fire direction to extinguish fire accurately in large flow, is stable and efficient in fire extinguishing, and has strong practicability.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic view of a partial cross-sectional structure of the present invention;
FIG. 3 is a partial schematic view of the present invention;
fig. 4 is a partial structural schematic diagram of the present invention.
In the figure:
1-nozzle body 11-carrier plate
2-splash plate 21-spherical groove
3-connecting rack
31-connecting chain
311-upper chain segment 312-lower chain segment
313-female link 3131-female elastic clamping piece a-first movable gap
314-male link 3141-male elastic clamping b-second movable gap
32-elastic support sleeve 33-pivot ball
4-glass ball
51-gear 52-support frame 53-motor 54-support rotating shaft 55-pre-tightening tension spring
6-controller
7-temperature sensor.
Detailed Description
In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.
The invention discloses a large-flow adjustable fire-fighting sprinkler head, which comprises a sprinkler head main body 1 positioned above, a splash plate 2 positioned below, a connecting frame 3 connected between the sprinkler head main body 1 and the splash plate 2, and glass balls 4 positioned among the sprinkler head main body 1, the splash plate 2 and the connecting frame 3, wherein the sprinkler head main body 1 is provided with a water inlet and a water outlet; the method is characterized in that: the device also comprises a telescopic driving device for telescopically driving the connecting frame 3, a controller 6 for controlling the telescopic driving device, and a temperature sensor 7 for sensing the temperature in the corresponding direction and transmitting a temperature signal to the controller 6; the connecting frame 3, the telescopic driving device and the temperature sensor 7 are four; the nozzle body 1 is provided with a bearing plate 11 which is horizontally arranged and connected with a ceiling;
the four connecting frames 3 are uniformly distributed around the glass ball 4; the connecting frame 3 comprises a connecting chain 31 penetrating through the bearing plate 11 and an elastic supporting sleeve 32 sleeved on the connecting chain 31; the bearing plate 11 is formed with a through hole for each connecting chain 31 to penetrate through; the connecting chain 31 comprises an upper chain section 311 above the carrying floor 11 and a lower chain section 312 below the carrying floor 11; the elastic support sleeve 32 is sleeved on the lower chain section 312 and supported between the lower surface of the bearing plate 11 and the upper surface of the splash plate 2; the elastic support sleeve 32 is formed with a sliding channel for the lower chain section 312 to slide through; the connection chain 31 includes a plurality of female links 313, a plurality of male links 314 alternately connected to the respective female links 313, upper end links at an upper end, and lower end links at a lower end connected to the splash pan 2; the connecting chain 31 has an inner side facing the glass ball 4, an outer side facing in the opposite direction, and a connecting side connected between the inner side and the outer side; the upper end of the inner side surface of the female chain link 313 is provided with an upper pivoting groove pivoted with the upper male chain link 314, and the lower end of the inner side surface of the female chain link 313 is provided with a lower pivoting groove pivoted with the lower male chain link 314 or the lower end chain link; the upper pivoting grooves are pivoted with the lower ends of the corresponding male chain links 314 through upper horizontal rotating shafts which are horizontally arranged and are vertical to the connecting side surfaces of the same connecting chains 31; the lower pivoting grooves are pivoted with the upper ends of the corresponding male chain links 314 or the lower end chain links through horizontally arranged lower horizontal rotating shafts, and the lower horizontal rotating shafts are vertical to the connecting side surfaces of the same connecting chains 31; the upper end of the outer side surface of the female link 313 is provided with a female elastic clamping sheet 3131 which extends upwards and is clamped on the outer side surface of the corresponding male link 314, and the upper end of the outer side surface of the male link 314 is provided with a male elastic clamping sheet 3141 which extends upwards and is clamped on the outer side surface of the corresponding female link 313; the lower end chain link is pivoted with the upper surface of the water splashing disc 2 through a pivoting ball 33, and a spherical groove 21 matched with the pivoting ball 33 is formed on the upper surface of the water splashing disc 2;
the telescopic driving device comprises a gear 51 which is positioned at the inner side of the corresponding connecting chain 31 and is meshed with the corresponding upper chain section 311, a supporting frame 52 which is arranged on the upper surface of the bearing plate 11 and supports the corresponding gear 51, and a motor 53 which drives the corresponding gear 51 to rotate; the gear 51 is connected with the support frame 52 through a support rotating shaft 54, and the support rotating shaft 54 is parallel to the upper horizontal rotating shaft of the corresponding connecting chain 31; the upper end chain links bypass the corresponding gear 51 and are connected to the upper surface of the bearing plate 11 through a pre-tightening tension spring 55;
the four temperature sensors 7 are evenly distributed around the glass sphere 4.
The large-flow adjustable fire sprinkler head is mainly used for large-flow fire extinguishing conditions with large fire conditions in the actual use process, when a fire breaks, the temperature sensor 7 on the bearing plate 11 senses the temperature of a fire source and transmits a signal to the controller 6 after the glass ball 4 is heated and broken, the controller 6 receives the signal of the temperature sensor 7 and then controls the motor 53 of the telescopic driving device in the direction opposite to the fire source to start, and the motor 53 drives the corresponding gear 51 to rotate so as to pull the corresponding connecting chain 31 upwards. For example, the fire source is located at the left side, the motor 53 of the telescopic driving device at the right side drives the corresponding gear 51 to rotate, the lower chain segment 312 at the left side bends to the upper right through the upper horizontal rotating shaft and the lower horizontal rotating shaft and presses the corresponding elastic support sleeve 32, the elastic support sleeve 32 supports the lower chain segment 312 at the left side, the lower chain segment 312 at the right side is pulled upwards to shorten, the lower end of the lower chain segment 312 at the right side gradually swings towards the right side and presses the corresponding female elastic clamping sheet 3131 and male elastic clamping sheet 3141, the corresponding female elastic clamping sheet 3131 and male elastic clamping sheet 3141 elastically deform, the elastic force of each female elastic clamping sheet 3131 and male elastic clamping sheet 3141 supports the splash pan 2, meanwhile, the lower chain segment 312 at the right side elastically presses the corresponding elastic support sleeve 32, the elastic support sleeve 32 supports the lower chain segment 312 at the right side, each corresponding pivot ball 33 and spherical groove 21 cooperate to rotate freely, the splash pan 2 gradually inclines upwards, the tension spring 55 contracts, finally, the fire pan 2 forms a state, the left-side inclined splash pan 2 is connected to the left-side inclined water jet head 2, and the left-side inclined water jet head is blocked by the left-side water jet head 2, and the left-inclined water jet head 2 is extinguished. When the fire source is in the direction between two adjacent flexible drive arrangement, two other flexible drive arrangement can cooperate the corresponding link 3 of drive to adjust the inclination of splash box 2, can make splash box 2's the least significant end towards the fire source direction equally to the realization carries out the purpose of pertinence fire extinguishing to arbitrary direction. And the elastic support cover 32 that the cover was located and is connected chain 31 plays the elastic support effect to connecting chain 31, can strengthen connecting chain 31 to splash the support intensity of dish 2, makes splash the dish 2 and stably blocks and the direction large-traffic rivers, realizes accurate injection and puts out a fire. The pre-tightening spring 55 can pre-tighten the connecting chain 31, so that the connecting chain 31 always keeps a state of being engaged around the corresponding gear 51, and the connecting chain 31 can keep a supporting force for the splash pan 2 at any time. The concrete structure can be that the controller 6 is also provided with a pressure sensor for detecting the pressure above the glass ball 4, when the glass ball 4 is broken, the pressure sensor starts the controller 6, and then the controller 6 receives the temperature signals of the temperature sensors 7 and makes corresponding control action.
Preferably, the lower chain segment 312 is gradually inclined toward the glass bead 4 from the top to the bottom. In the actual use process, the large-flow adjustable fire-fighting sprinkler head is obliquely arranged, so that the lower chain section 312 can be conveniently and better stretched, the orientation of the splash disc 2 is determined, and the splash disc 2 is firmly supported and fixed.
Preferably, four temperature sensors 7 are respectively located at the outer side of each connecting frame 3. According to the large-flow adjustable fire-fighting sprinkler head, in the actual use process, the temperature sensors 7 are positioned on the outer side and can be closer to a fire source, the sensing is more accurate, the real-time sensing of the temperature of the fire source can be enhanced through the temperature sensors 7, and sensing signals are transmitted from the outer side to the controller 6 to the inner side at the fastest speed.
Preferably, the male link 314 is formed with a male bayonet for the corresponding female resilient tab 3131 to snap into, and the female link 313 is formed with a female bayonet for the corresponding male resilient tab 3141 to snap into. In the practical use process of the large-flow adjustable fire sprinkler head, the male chain link and the female chain link are clamped into each other through the male bayonet and the female bayonet to form a stable and firm connecting chain 31 structure, so that the large-flow adjustable fire sprinkler head is convenient to shrink and pull.
Preferably, a first movable gap a for the female flexible card 3131 to move is provided between the upper end of the female flexible card 3131 and the upper end of the corresponding male bayonet, and a second movable gap b for the male flexible card 3141 to move is provided between the upper end of the male flexible card 3141 and the upper end of the corresponding female bayonet. In the practical use process of the large-flow adjustable fire-fighting sprinkler head, the first movable gap a and the second movable gap b can enable the female elastic clamping piece 3131 and the male elastic clamping piece 3141 to have sufficient movable spaces when being contracted, damage caused by over-stress when the connecting chain 31 is contracted is avoided, the connecting chain 31 and the pre-tightening tension spring are ensured to form pre-tightening force on the whole structure, and a stable pre-tightening effect is further achieved.
The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.
Claims (3)
1. A large-flow adjustable fire-fighting sprinkler head comprises a sprinkler head main body positioned above, a splash plate positioned below, a connecting frame connected between the sprinkler head main body and the splash plate, and glass balls positioned among the sprinkler head main body, the splash plate and the connecting frame; the method is characterized in that: the temperature sensor senses the temperature in the corresponding direction and transmits a temperature signal to the controller; the connecting frame, the telescopic driving device and the temperature sensor are four; the sprayer body is provided with a bearing plate which is horizontally arranged and connected with a ceiling; the four temperature sensors are uniformly distributed around the glass ball;
the four connecting frames are uniformly distributed around the glass ball; the connecting frame comprises a connecting chain penetrating through the bearing plate and an elastic supporting sleeve sleeved on the connecting chain; the bearing plate is provided with a through hole for the penetration of each connecting chain; the connecting chain comprises an upper chain section above the bearing plate and a lower chain section below the bearing plate; the elastic support sleeve is sleeved on the lower chain section and supported between the lower surface of the bearing plate and the upper surface of the splash plate; the elastic support sleeve is provided with a sliding channel for the lower chain section to slide through; the connecting chain comprises a plurality of female chain links, a plurality of male chain links alternately connected with the female chain links, upper end chain links at the upper end and lower end chain links at the lower end and connected with the splash pan; the connecting chain is provided with an inner side surface facing the glass ball, an outer side surface facing the opposite direction and a connecting side surface connected between the inner side surface and the outer side surface; the upper end of the inner side surface of the female chain link is provided with an upper pivoting groove pivoted with the upper male chain link, and the lower end of the inner side surface of the female chain link is provided with a lower pivoting groove pivoted with the lower male chain link or the lower end chain link; the upper pivoting grooves are pivoted with the lower ends of the corresponding male chain links through horizontally arranged upper horizontal rotating shafts, and the upper horizontal rotating shafts are perpendicular to the connecting side surface of the same connecting chain; the lower pivoting grooves are pivoted with the upper ends of the corresponding male chain links or the lower end chain links through horizontally arranged lower horizontal rotating shafts, and the lower horizontal rotating shafts are perpendicular to the connecting side face of the same connecting chain; the upper end of the outer side surface of the male chain link is provided with a male elastic clamping piece which extends upwards and is clamped on the outer side surface of the corresponding female chain link; the lower end chain link is pivoted with the upper surface of the splash plate through a pivoting ball, and a spherical groove matched with the pivoting ball is formed in the upper surface of the splash plate; the male chain link is provided with a male clamping opening for the corresponding female elastic clamping piece to be clamped in, and the female chain link is provided with a female clamping opening for the corresponding male elastic clamping piece to be clamped in; a first movable gap for the movement of the female elastic card is formed between the upper end of the female elastic card and the upper end of the corresponding male bayonet, and a second movable gap for the movement of the male elastic card is formed between the upper end of the male elastic card and the upper end of the corresponding female bayonet;
the telescopic driving device comprises a gear positioned on the inner side of the corresponding connecting chain and meshed with the corresponding upper chain section, a support frame arranged on the upper surface of the bearing plate and used for supporting the corresponding gear, and a motor used for driving the corresponding gear to rotate; the gear is connected with the support frame through a support rotating shaft, and the support rotating shaft is parallel to the upper horizontal rotating shaft of the corresponding connecting chain; the upper end chain link bypasses the corresponding gear and is connected to the upper surface of the bearing plate through a pre-tightening tension spring;
the telescopic driving device drives the gear to rotate, the lower chain section is upwards bent through the upper horizontal rotating shaft and the lower horizontal rotating shaft and extrudes the corresponding elastic support sleeve, the elastic support sleeve supports the lower chain section, the lower chain section is upwards pulled to be shortened, the lower end of the lower chain section gradually swings and extrudes the corresponding female elastic clamping piece and the corresponding male elastic clamping piece, the female elastic clamping piece and the male elastic clamping piece generate elastic deformation, the elastic force of each female elastic clamping piece and each male elastic clamping piece supports the splash plate, meanwhile, the lower chain section elastically extrudes the corresponding elastic support sleeve, the elastic support sleeve supports the lower chain section, the splash plate gradually inclines upwards, the tension springs are pre-tightened to contract, and finally the splash plate forms an inclined state; when the fire source is in the direction between two adjacent flexible drive arrangement, two other flexible drive arrangement can cooperate the corresponding link of drive to adjust the inclination of splash box, make the least significant end of splash box towards the fire source direction to the realization is gone on pertinence to putting out a fire to arbitrary direction.
2. The high flow adjustable fire sprinkler head of claim 1, wherein: the lower chain section is gradually inclined from top to bottom towards the glass ball.
3. The high flow adjustable fire sprinkler head of claim 2, wherein: the four temperature sensors are respectively and correspondingly positioned at the outer sides of the connecting frames.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073253.XA CN108211187B (en) | 2018-01-25 | 2018-01-25 | Large-traffic adjustable fire control watering shower nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810073253.XA CN108211187B (en) | 2018-01-25 | 2018-01-25 | Large-traffic adjustable fire control watering shower nozzle |
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| Publication Number | Publication Date |
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| CN108211187A CN108211187A (en) | 2018-06-29 |
| CN108211187B true CN108211187B (en) | 2023-03-17 |
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| CN201810073253.XA Active CN108211187B (en) | 2018-01-25 | 2018-01-25 | Large-traffic adjustable fire control watering shower nozzle |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215638B (en) * | 2019-06-13 | 2021-10-01 | 福建闽山消防有限公司 | Intelligent regulation's fire control is with watering shower nozzle |
| CN111603714B (en) * | 2020-06-03 | 2021-08-31 | 蒋海平 | Glass ball support and heavy-calibre fire control shower nozzle of heavy-calibre fire control shower nozzle |
| CN111821632B (en) * | 2020-07-29 | 2021-11-23 | 诸暨华匠工程设计咨询有限公司 | Spraying equipment for fire control |
| CN115779297B (en) * | 2022-11-17 | 2023-11-17 | 上海华锐救援装备有限公司 | Water curtain generating device |
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| CN1405465A (en) * | 2002-11-06 | 2003-03-26 | 董祥义 | New-type chain and its application |
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| CN108211187A (en) | 2018-06-29 |
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