CN110251873A - A kind of fire water spray nozzle - Google Patents
A kind of fire water spray nozzle Download PDFInfo
- Publication number
- CN110251873A CN110251873A CN201910666318.6A CN201910666318A CN110251873A CN 110251873 A CN110251873 A CN 110251873A CN 201910666318 A CN201910666318 A CN 201910666318A CN 110251873 A CN110251873 A CN 110251873A
- Authority
- CN
- China
- Prior art keywords
- support plate
- plug
- pressing plate
- temperature sensing
- glass ball
- 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.)
- Pending
Links
- 239000007921 spray Substances 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000011521 glass Substances 0.000 claims abstract description 58
- 238000003825 pressing Methods 0.000 claims abstract description 44
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000004579 marble Substances 0.000 abstract description 5
- 239000003381 stabilizer Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
- A62C37/14—Releasing means, e.g. electrically released heat-sensitive with frangible vessels
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a kind of fire water spray nozzles, including ontology, plug, the frame lower end of ontology is equipped with pedestal, pedestal lower end is equipped with splash box, plug and ontology water outlet are tightly connected, it is located at plug on ontology with pedestal equipped with release device, release device includes support plate, support plate one end is connect with plug lower end, the support plate other end is rotatably connected with pressing plate, support plate is also connect with one end of glass marble close to one end of plug, the other end of glass marble is connected to one end on pressing plate far from support plate, pressing plate is by screwing the adjusting screw support in pedestal, the axis centre of the center of rotation and adjusting screw of support plate and pressing plate junction has eccentricity, with supporting stabilizer, temperature-sensitive is sensitive, it is fast to trigger speed, advantage easy to assembly.
Description
Technical field
The present invention relates to fire-fighting equipment technical field, specially a kind of fire water spray nozzle.
Background technique
In fire-fighting fire extinguishing equipment, applicator is main device therein, directly facing scene of fire, existing fire-fighting
Spray head mainly uses glass marble (pipe) or fusible alloy as temperature-sensitive and triggering release original part, fire-fighting of this structure in small flow
It is applicable in spray head, but in the applicator of big flow, since caliber is big, fire-fighting liquid (is also ontology upper plug head
Sealing element) pressure that generates energetically, common temperature sensing glass ball (pipe) supporting structure cannot bear, if increase temperature sensing glass ball
Diameter, then have that thermal capacity is big, the slow disadvantage of temperature effect difference response speed, therefore has developed the knot using supporting plate component
Structure, if the patent No. 201320512164.3 discloses a kind of rapid response sprinkler, fast-response control component includes by putting down
The gusseted balanced body that weighing apparatus plate, supporting plate and temperature sensing glass ball three are constituted together, the upper end of supporting plate and a left side for balance plate
End is rotatablely connected by pin shaft, and the lower end of supporting plate acts against on the plug, equipped with connecting with supporting plate on the right side of supporting plate
The bottom end of support, the temperature sensing glass ball is abutted against on the support by temperature sensing glass ball seat, and the top of temperature sensing glass ball acts against
The right end lower part of balance plate, the center of top of balance plate acts against on the locating cone vertex of a cone that splash box is equipped with, but this structure
Control assembly only on being assembled to head body after could constitute gusseted balanced body, unassembled preceding its still cannot
A kind of stable component states are constituted, the shortcomings that there is also assembly difficultys.
Summary of the invention
The purpose of the present invention is to provide a kind of fire water spray nozzles, have supporting stabilizer, and temperature-sensitive is sensitive, triggers speed
Fastly, advantage easy to assembly, solves the problems of the prior art.
To achieve the above object, the invention provides the following technical scheme: a kind of fire water spray nozzle, including ontology 1, plug
2,102 lower end of frame of the ontology 1 is equipped with pedestal 101, and 101 lower end of pedestal is equipped with splash box 5, the plug 2 and institute
The sealed connection of 1 water outlet of ontology is stated, the plug 2 is located on the ontology 1 with the pedestal 101 equipped with release device 4, institute
Stating release device 4 includes support plate 401, and described 401 one end of support plate is connect with 2 lower end of plug, and the support plate 401 is another
One end is rotatably connected with pressing plate 410, the support plate 401 close to one end of the plug 2 also with temperature sensing glass ball 406 one
End connection, the other end of the temperature sensing glass ball 406 are connected to one end on the pressing plate 410 far from the support plate 401, institute
It states pressing plate 410 and is supported by screwing the adjusting screw 414 in the pedestal 101, the support plate 401 connects with the pressing plate 410
The center of rotation and the axis centre for adjusting screw 414 for meeting place have eccentricity 415.
With the above arrangement, fire-fighting liquid will decompose in support plate and temperature sensing glass ball the pressure that plug generates, one
Aspect maintains that temperature sensing glass ball temperature-sensitive is sensitive, triggers fast advantage, on the other hand since support plate provides supporting force, makes to release
Bigger pressure can be born by putting device；And the triangular structure stability of support plate, temperature sensing glass ball and pressing plate composition is good, protects
Reliability when work on duty is demonstrate,proved；When fire occurs, after temperature sensing glass ball temperature-sensitive destroys, due to the presence of eccentricity,
Under fire-fighting hydraulic coupling, support plate and pressing plate instant reverse unstability are detached from ontology, and fire-fighting liquid sprays in time, ensure that temperature-sensitive it is sensitive and
Triggering is rapid.
The support plate 401 and the convex beam 405 that 2 contact jaw of plug is that end face has circular arc, the convex beam 405 and institute
The groove 201 stated on plug 2 is adapted to, and one end that the support plate 401 is connect with the pressing plate 410 is equipped with ball and socket joint 403, described
Ball and socket joint 403 is equipped with the first confined planes 404, is provided in the support plate 401 with 406 junction of temperature sensing glass ball recessed
Hole 407 is to accommodate the bulb of the temperature sensing glass ball 406, the position of temperature sensing glass ball 406 described in face in the support plate 401
Equipped with empty slot 402.
The pressing plate 410 be equipped with joint slot 412 be adapted to the ball and socket joint 403, the joint slot 412 equipped with it is described
Compatible second confined planes 411 of first confined planes 404；It is set at the temperature sensing glass ball 406 on the pressing plate 410 for installing
There is screw hole 409, be combined in the screw hole 409 and adjust bolt 408, the adjusting bolt 408 is equipped with 4081 pairs of institutes of accommodating chamber
It states temperature sensing glass ball 406 to be supported, supported hole 413, the supported hole 413 and the adjusting is additionally provided on the pressing plate 410
414 tip of screw is adapted.
With the above arrangement, the pre-assembled of release device may be implemented, by release device be pre-assembled as after component again and this
Body general assembly greatly improves the packaging efficiency of spray head, and when specific pre-assembled, the ball and socket joint of support plate is packed on pressing plate
In the slot of joint, then by one end of the non-bulb of temperature sensing glass ball be put into screw hole and will its bulb one end be packed into it is recessed in support plate
In hole, then will adjust bolt and screw in screw hole, accommodating chamber alignment is made temperature sensing glass ball and to be tightened to regulation torque, at this moment due to
The interaction support plate and pressing plate of first confined planes and the second confined planes cannot mutually open separate, such support plate, pressure
Plate, temperature sensing glass ball are formed a firm entirety, become a component；Then, the convex beam in support plate is put into stifled
In the groove of head, the supported hole of pressing plate is put on the tip for adjusting screw, screwing adjusting screw can be simple to regulation torque
Completion spray head assembly assembling, simple to operate, quick, high production efficiency；
Empty slot is set by face temperature sensing glass ball position on the supporting plate, avoids support plate from blocking temperature sensing glass ball, makes temperature-sensitive
Glass marble in different directions can normal temperature-sensitive, guarantee that the action sensitivity of spray head is good；
By the cooperation of convex beam and groove, cooperate plug and support plate and stablize, passes through supported hole and the adjusting screw of pressing plate
Tip cooperation, on the one hand ensures that convex beam is good with trench contact, and when work on duty is reliable and stable, on the other hand after triggering work
Since the contact surface of pressing plate and adjusting screw is small, support plate and pressing plate can be detached from rapidly in unstability overturning, it is ensured that fire-fighting liquid sprays in time
Out；
By adjust bolt on accommodating chamber is set, on the one hand temperature sensing glass ball is supported, and to temperature sensing glass ball into
Row protection, while keeping total compact, rationally, adjust easy for installation.
It is further: spring 3 is equipped between 2 outer circle of plug and the frame 102.
With the above arrangement, plug can rapidly be popped up by spring and leave ontology after release device triggering, guarantee fire-fighting
Liquid can accurately be flushed on splash box.
Beneficial effects of the present invention: applicator initiative provided by the invention devises release device, in big flow
Spray head on could be used that temperature sensing glass ball as temperature-sensitive trigger element, it is ensured that temperature-sensitive and trigger it is sensitive, stable structure is reliable；And
And the pre-assembled of release device component is realized, simplify the assembly working, easy to operate of spray head, significantly improves production effect
Rate；Meanwhile there is compact-sized, adjusting advantage of convenient mounting.
Detailed description of the invention
Fig. 1 is the perspective view of structure of the invention.
Fig. 2 is the main view of structure of the invention.
Fig. 3 is the A-A cross-sectional view of Fig. 2.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3, a kind of fire water spray nozzle, including ontology 1, plug 2 are please referred to, 102 lower end of frame of ontology 1 is equipped with base
Seat 101,101 lower end of pedestal are equipped with splash box 5, and plug 2 and 1 water outlet of ontology are tightly connected, and plug 2 and base are located on ontology 1
Seat 101 is equipped with release device 4, and release device 4 includes support plate 401, and 401 one end of support plate is connect with 2 lower end of plug, supports
401 other end of plate is rotatably connected with pressing plate 410, support plate 401 close to one end of plug 2 also with temperature sensing glass ball 406 one
End connection, the other end of temperature sensing glass ball 406 are connected to one end on pressing plate 410 far from support plate 401, and pressing plate 410 is by screwing
Adjusting screw 414 in pedestal 101 supports, the center of rotation and adjusting screw 414 of support plate 401 and 410 junction of pressing plate
Axis centre have eccentricity 415.The pressure that fire-fighting liquid generates plug 2 in this way will decompose support plate 401 and temperature-sensitive
On glass marble 406, it is sensitive on the one hand to maintain 406 temperature-sensitive of temperature sensing glass ball, fast advantage is triggered, on the other hand due to support plate
401 provide supporting force, and release device 4 is enable to bear bigger pressure；And support plate 401, temperature sensing glass ball 406 and pressing plate
The triangular structure stability of 410 compositions is good, ensure that reliability when work on duty；When fire occurs, temperature sensing glass ball
After 406 temperature-sensitives destroy, due to the presence of eccentricity 415, under fire-fighting hydraulic coupling, support plate 401 and 410 instant reverse of pressing plate are lost
Steady to be detached from ontology 1, fire-fighting liquid sprays in time, ensure that temperature-sensitive is sensitive and triggering is rapid.
Preferred: support plate 401 and 2 contact jaw of plug are the convex beam 405 that end face has circular arc, in convex beam 405 and plug 2
Groove 201 be adapted to, one end that support plate 401 connect with pressing plate 410 be equipped with ball and socket joint 403, ball and socket joint 403 equipped with first limit
Plane 404 is provided with pit 407 with 406 junction of temperature sensing glass ball to accommodate the ball of temperature sensing glass ball 406 in support plate 401
Head, the position of face temperature sensing glass ball 406 is equipped with empty slot 402 in support plate 401.
Preferred: pressing plate 410 is equipped with joint slot 412 and is adapted to ball and socket joint 403, and joint slot 412 is equipped with and the first limit
Compatible second confined planes 411 in face 404；Screw hole 409, screw hole are equipped at temperature sensing glass ball 406 for installing on pressing plate 410
It is combined in 409 and adjusts bolt 408, adjusted bolt 408 and temperature sensing glass ball 406 is supported equipped with accommodating chamber 4081, press
Supported hole 413 is additionally provided on plate 410, supported hole 413 is adapted with 414 tip of screw is adjusted.Release device 4 may be implemented in this way
It is pre-assembled, release device 4 is pre-assembled as after component to greatly improve the packaging efficiency of spray head with 1 general assembly of ontology again, have
Body it is pre-assembled when, the ball and socket joint 403 of support plate 401 is packed into the joint slot 412 on pressing plate 410, then by temperature sensing glass ball
One end of 406 non-bulb is put into screw hole 409 and by the pit 407 in its bulb one end loading support plate 401, then will
Adjust bolt 408 to screw in screw hole 409, be directed at accommodating chamber 4081 and temperature sensing glass ball 406 and be tightened to regulation torque, at this moment by
In the first confined planes 404 and the second confined planes 411 interaction support plate 401 and pressing plate 410 cannot mutually open it is separate,
Support plate 401, pressing plate 410, temperature sensing glass ball 406 are formed a firm entirety in this way, form a component；Then,
Convex beam 405 in support plate 401 is put into the groove 201 of plug 2, the supported hole 413 of pressing plate 410 is put into adjusting screw
On 414 tip, screws and adjust the assembling that screw 414 can be simply done spray head assembly to regulation torque, side easy to operate
Just, fast, high production efficiency, it should be noted that the tip that adjusts screw 414 can be the sharp arc-shaped that is also possible to；
406 position of face temperature sensing glass ball is provided with empty slot 402 in support plate 401 in the present embodiment, and support plate 401 is avoided to keep off
Firmly temperature sensing glass ball 406, make temperature sensing glass ball 406 in all directions can normal temperature-sensitive, guarantee the accurate triggering work of spray head
Make；
The cooperation of convex beam 405 and groove 201 in the present embodiment cooperates plug 2 and support plate 401 and stablizes, passes through pressing plate 410
Supported hole 413 and adjust screw 414 tip cooperate, on the one hand ensure that convex beam 405 contacts well with groove 201, work on duty
It is reliable and stable when making, on the other hand since pressing plate 410 and the contact surface of adjusting screw 414 are small after triggering work, support plate 401
It unstability overturning can be detached from rapidly with pressing plate 410, it is ensured that fire-fighting liquid sprays in time；
It adjusts in the present embodiment and accommodating chamber 4081 is set on bolt 408, on the one hand temperature sensing glass ball 406 is supported,
It is to be protected to temperature sensing glass ball 406, while keeping total compact, rationally, adjusts easy for installation.
It is preferred: spring 3 to be equipped between 2 outer circle of plug and frame 102, after release device 4 triggers, plug 2 can be by bullet
Rapidly ontology 1 is left in pop-up to spring 3, guarantees that fire-fighting liquid can accurately be flushed on splash box.
In conclusion applicator initiative provided by the invention devises release device, on the spray head of big flow
It could be used that temperature sensing glass ball as temperature-sensitive trigger element, it is ensured that temperature-sensitive and triggering are sensitive, and stable structure is reliable；And it realizes
Release device component it is pre-assembled, simplify the assembly working, easy to operate of spray head, significantly improve production efficiency；Meanwhile
With advantage compact-sized, that adjusting is easy for installation, scalability is good.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (2)
1. frame (102) lower end of a kind of fire water spray nozzle, including ontology (1), plug (2), the ontology (1) is equipped with pedestal
(101), pedestal (101) lower end is equipped with splash box (5), and the plug (2) and the ontology (1) water outlet are tightly connected,
Be located at the plug (2) and the pedestal (101) on the ontology (1) is equipped with release device (4), the release device (4)
Including support plate (401), described support plate (401) one end is connect with the plug (2) lower end, and the support plate (401) is another
End is rotatably connected with pressing plate (410), one end of the support plate (401) close the plug (2) also with temperature sensing glass ball
(406) one end connection, the other end of the temperature sensing glass ball (406) are connected on the pressing plate (410) far from the support
One end of plate (401), the pressing plate (410) are supported by screwing the adjusting screw (414) in the pedestal (101), the branch
The center of rotation and the axis centre for adjusting screw (414) of fagging (401) and the pressing plate (410) junction have bias
Away from (415), it is characterised in that:
The support plate (401) and the plug (2) contact jaw are the convex beam (405) that end face has circular arc, the convex beam (405)
It is adapted to the groove (201) on the plug (2), one end that the support plate (401) connect with the pressing plate (410), which is equipped with, closes
Section header (403), the ball and socket joint (403) are equipped with the first confined planes (404), on the support plate (401) with the temperature-sensitive glass
Glass ball (406) junction is provided with pit (407) to accommodate the bulb of the temperature sensing glass ball (406), the support plate (401)
The position of temperature sensing glass ball described in upper face (406) is equipped with empty slot (402)；
The pressing plate (410) be equipped with joint slot (412) be adapted to the ball and socket joint (403), the joint slot (412) equipped with
Compatible second confined planes (411) of first confined planes (404)；For installing the temperature-sensitive glass on the pressing plate (410)
Screw hole (409) are equipped at glass ball (406), is combined in the screw hole (409) and adjusts bolt (408), the adjusting bolt (408)
It is equipped with accommodating chamber (4081) to support the temperature sensing glass ball (406), is additionally provided with supported hole on the pressing plate (410)
(413), the supported hole (413) is adapted with adjusting screw (414) tip.
2. a kind of fire water spray nozzle according to claim 1, it is characterised in that: plug (2) outer circle and the frame
Spring (3) are equipped between frame (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910666318.6A CN110251873A (en) | 2019-07-23 | 2019-07-23 | A kind of fire water spray nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910666318.6A CN110251873A (en) | 2019-07-23 | 2019-07-23 | A kind of fire water spray nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110251873A true CN110251873A (en) | 2019-09-20 |
Family
ID=67927852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910666318.6A Pending CN110251873A (en) | 2019-07-23 | 2019-07-23 | A kind of fire water spray nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110251873A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167059A (en) * | 2020-04-01 | 2020-05-19 | 上海瑞泰消防设备制造有限公司 | Large-diameter nozzle temperature sensing mechanism and large-diameter nozzle |
| CN111603714A (en) * | 2020-06-03 | 2020-09-01 | 蒋海平 | Glass ball support and heavy-calibre fire control shower nozzle of heavy-calibre fire control shower nozzle |
| WO2023075789A1 (en) * | 2021-10-29 | 2023-05-04 | Tyco Fire Products Lp | Sprinkler frame support bridge |
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| CN109364409A (en) * | 2018-09-25 | 2019-02-22 | 浙江瑞城消防设备有限公司 | A kind of wisdom spray head |
| CN109985343A (en) * | 2019-03-26 | 2019-07-09 | 浙江瑞城消防设备有限公司 | A kind of temperature-sensitive starter and the wisdom spray head including the device |
| CN210228959U (en) * | 2019-07-23 | 2020-04-03 | 上海瑞泰消防设备制造有限公司 | Fire control watering shower nozzle |
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| US20070114047A1 (en) * | 1998-05-15 | 2007-05-24 | Grinnell Corporation | Early suppression fast response fire protection sprinkler |
| CN203417420U (en) * | 2013-08-19 | 2014-02-05 | 陈三豹 | Rapid response nozzle |
| CN204034108U (en) * | 2014-06-11 | 2014-12-24 | 浙江恒安消防安全设备有限公司 | A kind of erect type shower nozzle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167059A (en) * | 2020-04-01 | 2020-05-19 | 上海瑞泰消防设备制造有限公司 | Large-diameter nozzle temperature sensing mechanism and large-diameter nozzle |
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| CN111603714A (en) * | 2020-06-03 | 2020-09-01 | 蒋海平 | Glass ball support and heavy-calibre fire control shower nozzle of heavy-calibre fire control 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 |
| WO2023075789A1 (en) * | 2021-10-29 | 2023-05-04 | Tyco Fire Products Lp | Sprinkler frame support bridge |
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