CN115025425A - Fire-fighting foam spraying system - Google Patents
Fire-fighting foam spraying system Download PDFInfo
- Publication number
- CN115025425A CN115025425A CN202210668680.9A CN202210668680A CN115025425A CN 115025425 A CN115025425 A CN 115025425A CN 202210668680 A CN202210668680 A CN 202210668680A CN 115025425 A CN115025425 A CN 115025425A
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- orifice plate
- foam
- orifice
- muddy
- impeller
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- 239000006260 foam Substances 0.000 title claims abstract description 118
- 238000005507 spraying Methods 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 239000011550 stock solution Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 19
- 239000007921 spray Substances 0.000 claims description 17
- 239000012141 concentrate Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000015073 liquid stocks Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241001237961 Amanita rubescens Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011493 spray foam Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
-
- 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
- A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
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 fire-fighting foam spraying system which comprises a deluge valve, a foam stock solution storage device, a proportional mixer, a throttling orifice plate adjusting device, a muddy device and a spraying device, wherein the deluge valve is arranged on the bottom of the foam stock solution storage device; the water outlet of the deluge valve is communicated with the fire water inlet of the proportional mixer, the foam stock solution storage device is communicated with the foam stock solution inlet of the proportional mixer through a throttle orifice adjusting device, the proportional mixer is used for mixing the fire water and the foam stock solution, the throttle orifice adjusting device comprises a throttle orifice with adjustable throttle orifice size, and the throttle orifice adjusting device is used for adjusting the proportion of the foam stock solution entering the proportional mixer; the outlet of the proportional mixer is connected with the inlet of the muddy device, the outlet of the muddy device is connected with the spraying device, the muddy device comprises a passive rotating impeller, and the impeller rotates under the impact of the foam mixed liquid and is used for stirring the foam mixed liquid. The fire-fighting foam spraying system provided by the invention has the advantages of adjustable mixing proportion of the foam mixed liquid and good mixing uniformity of the foam mixed liquid.
Description
Technical Field
The invention relates to the technical field of fire fighting, in particular to a fire fighting foam spraying system.
Background
The fire-fighting foam spraying system is a fixed fire-fighting system which adopts a nozzle to spray foam, and is suitable for places where A, B and C liquid may leak and fire-fighting facilities are insufficient. The foam spraying system can play a role in fire extinguishing, also can play a role in cooling and protecting objects, reducing heat radiation and the like, has the characteristics of safety, reliability, economy, practicability, high fire extinguishing efficiency and the like, particularly has outstanding advantages for fighting class B fires, and is an effective fighting mode for oil fires at home and abroad. The foam proportion mixer for mixing the water and the foam mixed liquid is a nerve center of the foam spraying system, and the working effect of the foam proportion mixer is directly related to the success or failure of the foam spraying system in fighting fire. However, fire-fighting foam spraying systems in the related art generally have the problems of non-adjustable mixing ratio, non-uniform mixing of foam mixed liquid and the like, and influence on fire extinguishing effect.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the embodiment of the invention provides a fire-fighting foam spraying system with adjustable mixing proportion and good mixing uniformity of foam mixed liquid.
The fire-fighting foam spraying system of the embodiment of the invention comprises: the system comprises a deluge valve, a foam stock solution storage device, a proportional mixer, a throttling orifice adjusting device, a muddy device and a spraying device; the water outlet of the deluge valve is communicated with a fire water inlet of the proportional mixer, the foam stock solution storage device is communicated with the foam stock solution inlet of the proportional mixer through the throttle orifice adjusting device, the proportional mixer is used for mixing fire water and foam stock solution, the throttle orifice adjusting device comprises a throttle orifice with adjustable throttle orifice size, and the throttle orifice adjusting device is used for adjusting the proportion of the foam stock solution entering the proportional mixer; the outlet of the proportional mixer is connected with the inlet of the muddy agitator, the outlet of the muddy agitator is connected with the spraying device, the muddy agitator comprises a passive rotating impeller, and the impeller rotates under the impact of the foam mixed liquid and is used for stirring the foam mixed liquid.
According to the fire-fighting foam spraying system provided by the embodiment of the invention, the orifice hole adjusting device is used for adjusting the mixing concentration of the foam mixed liquid in the proportional mixer, and the passive impeller is used for stirring the foam mixed liquid, so that the foam mixed liquid is good in mixing uniformity, the fire extinguishing performance of the foam mixed liquid is better, and the fire extinguishing effect of the foam spraying system can be further improved. Therefore, the fire-fighting foam spraying system provided by the embodiment of the invention has the advantages of adjustable mixing proportion of the foam mixed liquid and good mixing uniformity of the foam mixed liquid.
In some embodiments, the outlet of the deluge valve is in communication with each of the foam concentrate storage device and the proportioner.
In some embodiments, the orifice plate includes a first orifice plate and a second orifice plate, the first orifice plate and the second orifice plate cooperate with each other to form the orifice hole, the first orifice plate and the second orifice plate are arranged offset in an axial direction of the orifice hole, and at least one of the first orifice plate and the second orifice plate is position-adjustable in a first direction mutually perpendicular to the axial direction of the orifice hole to vary the orifice cross-sectional area.
In some embodiments, a side of the first orifice plate adjacent to the second orifice plate has a first slot, and a side of the second orifice plate opposite the first slot has a second slot, the first slot and the second slot cooperating to form the orifice.
In some embodiments, the first slot and the second slot are both semi-circular.
In some embodiments, when the overlapping area of the first orifice plate and the second orifice plate in the axial direction of the orifice hole is smallest or completely staggered, the cross-sectional area of the orifice hole is largest.
In some embodiments, the first orifice plate and the second orifice plate are each positionally adjustable in the first direction, and the orifice plate adjustment device further includes a first transmission for driving the first orifice plate and a second transmission for driving the second orifice plate.
In some embodiments, the muddy device comprises a muddy pipeline, the impeller is arranged in the muddy pipeline, and the axial direction of the impeller and the flow direction of the foam mixed liquid in the muddy pipeline are parallel to each other.
In some embodiments, the agitator comprises a mounting bracket, an impeller shaft of the impeller is connected with the mounting bracket, the impeller comprises a plurality of blades, and the rotation angle of the blades is less than or equal to 30 degrees.
In some embodiments, the impeller shaft of the impeller is a damped rotating shaft.
Drawings
Fig. 1 is a schematic view of a fire fighting foam spray system in an embodiment of the present invention.
Fig. 2 is a schematic diagram of the construction of an orifice plate adjusting device in an embodiment of the present invention (in which the orifice is in a maximum state).
Fig. 3 is a schematic diagram of the construction of an orifice plate adjusting device in an embodiment of the invention (in which the orifice is in an adjusted state).
FIG. 4 is a perspective view of a blusher in an embodiment of the present invention.
Reference numerals:
a deluge valve 1, a foam stock solution storage device 2, a proportioner 3, a throttle orifice adjusting device 4, a first throttle orifice 41, a first slot hole 411, a second throttle orifice 42, a second slot hole 421, a throttle orifice 43, a first transmission device 44, a second transmission device 45, a first valve, a second valve, a throttle orifice adjusting device, a throttle valve adjusting device, a first transmission device, a throttle valve adjusting device, a second transmission device, a throttle valve adjusting device, a throttle valve, a throttle orifice, a throttle valve, a valve adjusting device, a throttle orifice, a throttle valve, a valve adjusting device, a throttle valve, a transmission device, a valve, a transmission device, a valve, a transmission device,
A muddy stirrer 5, a muddy pipeline 51, an impeller 52, a blade 521, a mounting bracket 53,
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A fire fighting foam spray system provided by an embodiment of the present invention is described below with reference to fig. 1 to 4. The fire-fighting foam spraying system comprises a deluge valve 1, a foam stock solution storage device 2, a proportioner 3, a throttle orifice adjusting device 4, a mixer 5 and a spraying device (not shown in the figure).
The delivery port of deluge valve 1 communicates with the fire water entry of proportioner 3, and foam stoste storage device 2 is used for storing the foam stoste, and foam stoste storage device 2 communicates with the foam stoste entry of proportioner 3 through orifice plate adjusting device 4, and proportioner 3 is used for the mixture of fire water and foam stoste.
Under the condition that a fire disaster does not happen normally, the deluge valve 1 is in a servo state, and the foam stock solution storage device 2 is filled with foam stock solution with certain pressure and proportion according to requirements. When a fire disaster occurs, the deluge valve 1 is opened, the fire water flowing out of the water outlet of the deluge valve 1 and the foam stock solution flowing out of the foam stock solution storage device 2 are mixed in the proportional mixer 3 to form foam mixed solution, and the mixed solution flows out of the foam mixed solution outlet of the proportional mixer 3. The orifice regulating device 4 comprises an orifice with an adjustable orifice size, and the orifice regulating device 4 is used for regulating the proportion of the foam stock solution entering the proportioner 3, namely, the flow speed and the flow rate of the foam stock solution flowing into the proportioner 3 from the foam stock solution storage device 2 can be regulated by regulating the size of the orifice.
The foam mixed liquid outlet of the proportional mixer 3 is connected with the inlet of the muddy stirrer 5, and the outlet of the muddy stirrer 5 is connected with the spraying device. The agitator 5 includes a passive rotating impeller that rotates to stir the foam mixture. The foam mixed liquid that the foam mixed liquid outlet of proportioner 3 flows out gets into muddy ware 5, through the impeller stirring, the foam mixed liquid of stirring sprays through spray set and puts out a fire, optionally, spray set includes the shower nozzle. It should be noted that the passive impeller rotates under the impact of the foam mixture entering the agitator 5, and no additional drive is needed.
According to the fire-fighting foam spraying system provided by the embodiment of the invention, the orifice hole adjusting device is used for adjusting the mixing concentration of the foam mixed liquid in the proportional mixer, and the passive impeller is used for stirring the foam mixed liquid, so that the foam mixed liquid is good in mixing uniformity, the fire extinguishing performance of the foam mixed liquid is better, and the fire extinguishing effect of the foam spraying system can be further improved. Therefore, the fire-fighting foam spraying system provided by the embodiment of the invention has the advantages of adjustable mixing proportion of the foam mixed liquid and good mixing uniformity of the foam mixed liquid.
In some embodiments, the foam concentrate storage device 2 is a foam concentrate storage tank.
In some embodiments, the fire fighting foam spray system further comprises a driving pump connected to an outlet side of the foam concentrate storage means 2 for driving the foam concentrate in the foam concentrate storage means 2 into the proportioner 3.
In other embodiments, the fire fighting foam spray system may also be provided without a drive pump. As shown in fig. 1, the water outlet of the deluge valve 1 communicates with each of the foam stock solution storage device 2 and the proportioner 3. That is, the fire-fighting water flowing out of the deluge valve 1 is divided into two paths, one path leading to the proportioner 3 and the other path leading to the foam concentrate storage device 2. The foam stock solution in the foam stock solution storage device 2 flows out under the pressure of fire water, passes through the orifice plate adjusting device 4, enters the proportioning mixer 3 and is proportionally mixed with the fire water in the proportioning mixer 3. The arrangement can reduce the number of devices in the system, and further reduce the energy consumption and the operation cost and the manufacturing cost of the equipment.
In some embodiments, the orifice plate of the orifice plate adjusting device 4 includes a first orifice plate 41 and a second orifice plate 42, and the first orifice plate 41 and the second orifice plate 42 cooperate to form an orifice 43. The first orifice plate 41 and the second orifice plate 42 are offset from each other in the axial direction of the orifice 43. That is, the first orifice plate 41 and the second orifice plate 42 are arranged offset in a certain direction, and define therebetween an orifice 43 axially along the direction. At least one of the first orifice plate 41 and the second orifice plate 42 is positionally adjustable in a first direction (as indicated by the arrows in fig. 2 and 3) to vary the orifice cross-sectional area. Wherein the first direction is perpendicular to the axial direction of the orifice 43. The adjustable position of at least one of the first orifice plate 41 and the second orifice plate 42 in the first direction specifically includes the following cases: the first orifice plate 41 is position adjustable in a first direction; the second orifice plate 42 is adjustable in position in the first direction, and each of the first orifice plate 41 and the second orifice plate 42 is adjustable in position in the first direction.
The offset arrangement of the first orifice plate 41 and the second orifice plate 42 is to allow the relative position between the first orifice plate 41 and the second orifice plate 42 in the first direction to be adjustable. By moving the first orifice plate 41 and/or the second orifice plate 42 in the first direction, the relative positional relationship between the first orifice plate 41 and the second orifice plate 42 may be changed, and the cross-sectional area of the orifice hole 43 defined therebetween may be distinguished, that is, the orifice hole 43 may be increased or decreased. It will be appreciated that the larger the orifice 43, the larger the proportion of the foam liquid stock introduced into the proportioner 3 for mixing, and the smaller the orifice 43, the smaller the proportion of the foam liquid stock introduced into the proportioner 3 for mixing.
In one embodiment, as shown in fig. 2 and 3, a side of the first orifice plate 41 adjacent to the second orifice plate 42 has a first slot 411, a side of the second orifice plate 42 opposite to the first slot 411 has a second slot 421, and the first slot 411 and the second slot 421 cooperate to form the orifice 43. The orifice 43 has a maximum state (shown in fig. 2) and a regulation state (shown in fig. 3). The maximum state of the orifice 43 means that the cross-sectional area of the orifice 43 formed by fitting the first orifice plate 41 and the second orifice plate 42 is maximum, the adjustment state of the orifice 43 means that the relative positional relationship between the first orifice plate 41 and the second orifice plate 42 changes, and the cross-sectional area of the orifice 43 in the adjustment state is smaller than the cross-sectional area of the orifice 43 in the maximum state.
Further, when the overlapping area of the first orifice plate 41 and the second orifice plate 42 in the axial direction of the orifice hole 43 is minimized or completely shifted, the cross-sectional area of the orifice hole 43 is maximized. The larger the overlapping area of the first orifice plate 41 and the second orifice plate 42 in the axial direction of the orifice 43, the smaller the cross-sectional area of the orifice 43. In the embodiment shown in fig. 2, when the first orifice plate 41 and the second orifice plate 42 are completely displaced in the axial direction of the orifice 43, that is, when the first orifice plate 41 and the second orifice plate 42 do not overlap in the axial direction of the orifice 43, the orifice 43 is in the maximum state. As shown in fig. 3, the first orifice plate 41 and the second orifice plate 42 partially overlap in the axial direction of the orifice 43, and the cross-sectional area of the orifice 43 decreases. In some embodiments, the first orifice plate 41 and the second orifice plate 42 are in sealing engagement in the axial direction of the orifice 43, so that the foam raw liquid can only flow through the orifice 43.
As shown in fig. 2 and 3, the first slot 411 and the second slot 421 are both semicircular. As shown in fig. 2, when the orifice 43 is in the maximum state, the first slot 411 and the second slot 421 are combined into a circular orifice 43. As shown in fig. 3, the orifice 43 is an overlapping portion of the first slot 411 and the second slot 421.
Of course, in other embodiments, the first slot 411 and the second slot 421 may have other structures, for example, the first slot 411 and the second slot 421 may be rectangular slots, and the first slot 411 and the second slot 421 cooperate with each other to form the rectangular throttle hole 43.
Further, in the embodiment of fig. 2 and 3, the first orifice plate 41 and the second orifice plate 42 are both arranged in a position adjustable manner in the first direction, and the orifice plate adjusting device 4 further includes a first transmission device 44 and a second transmission device 45, the first transmission device 44 is used for driving the first orifice plate 41 to move in the first direction, and the second transmission device 45 is used for driving the second orifice plate 42 to move in the first direction.
Specifically, in the adjusting process of fig. 2 to 3, the first transmission device 44 drives the first orifice plate 41, and the second transmission device 45 drives the second orifice plate 42 to move toward each other in the first direction, so that the first orifice plate 41 and the second orifice plate 42 are partially overlapped. The orifice 43 moves from the maximum state to the regulation state, and the cross-sectional area decreases.
Alternatively, the first transmission 44 includes a first driving rod connected to the first orifice plate 41 and a first stepping motor connected to the first driving rod, and the second transmission 45 includes a second driving rod connected to the second orifice plate 42 and a second stepping motor connected to the second driving rod.
In other embodiments, the relative positions of the first orifice plate 41 and the second actuator 45 may be adjusted manually.
When the system is debugged, sampling is carried out on the foam mixed liquid at the outlet of the mixer 3 or the mixer 5, and the concentration of the foam mixed liquid is compared with the preset concentration of the mixed liquid. If not, the size of the orifice 43 of the orifice plate setting device 4 is adjusted.
As shown in fig. 4, the agitator 5 includes an agitating pipe 51, an impeller 52 is disposed in the agitating pipe 51, the rotation axis direction of the impeller 42 and the flow direction of the foam mixture in the agitating pipe 51 are parallel to each other, and the impeller 52 rotates under the impact of the foam mixture to agitate the foam mixture entering the agitating pipe 51, so that the foam mixture is more uniform.
As shown in fig. 4, the agitator 5 includes a mounting bracket 53, and the impeller shaft of the impeller 52 is connected to the mounting bracket 43. The impeller 52 comprises a plurality of blades 521, and in order to prevent the rotating speed of the impeller 52 from being too high, the angle of the blades 521 is not suitable to be too large, and the rotating angle of the blades 521 is less than or equal to 30 degrees. The rotation angle of the vane 521 is the angle between the geometric plane and the rotation axis of the impeller 52.
Further, the impeller shaft of the impeller 521 may also be a damping rotating shaft, that is, the impeller shaft has a certain damping characteristic, so as to prevent the rotating speed of the impeller 52 from being too high.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although the above embodiments have been shown and described, it should be understood that they are exemplary and should not be construed as limiting the present invention, and that many changes, modifications, substitutions and alterations to the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A fire fighting foam spray system, comprising: the system comprises a deluge valve, a foam stock solution storage device, a proportional mixer, a throttling orifice adjusting device, a muddy device and a spraying device;
the water outlet of the deluge valve is communicated with a fire water inlet of the proportional mixer, the foam stock solution storage device is communicated with a foam stock solution inlet of the proportional mixer through the orifice plate adjusting device, the proportional mixer is used for mixing fire water and foam stock solution, the orifice plate adjusting device comprises an orifice plate with an adjustable orifice size, and the orifice plate adjusting device is used for adjusting the proportion of the foam stock solution entering the proportional mixer;
the outlet of the proportional mixer is connected with the inlet of the muddy agitator, the outlet of the muddy agitator is connected with the spraying device, the muddy agitator comprises a passive rotating impeller, and the impeller rotates under the impact of the foam mixed liquid and is used for stirring the foam mixed liquid.
2. A fire fighting foam spray system as recited in claim 1,
a water outlet of the deluge valve is in communication with each of the foam concentrate storage device and the proportioner.
3. A fire fighting foam spray system as recited in claim 1,
the orifice plate includes a first orifice plate and a second orifice plate, the first orifice plate and the second orifice plate cooperate with each other to form the orifice, the first orifice plate and the second orifice plate are arranged to be offset in an axial direction of the orifice, and at least one of the first orifice plate and the second orifice plate is positionally adjustable in a first direction perpendicular to the axial direction of the orifice to vary a cross-sectional area of the orifice.
4. A fire fighting foam spray system as recited in claim 3,
one side of the first orifice plate close to the second orifice plate is provided with a first groove hole, one side of the second orifice plate opposite to the first groove hole is provided with a second groove hole, and the first groove hole and the second groove hole are matched to form the orifice.
5. A fire fighting foam spray system as recited in claim 4,
the first slot hole and the second slot hole are both semicircular.
6. A fire fighting foam spray system as recited in any one of claims 3 to 5,
when the overlapping area of the first orifice plate and the second orifice plate in the axial direction of the orifice is minimum or completely staggered, the cross-sectional area of the orifice is maximum.
7. The fire fighting foam spray system according to any one of claims 3 to 5, wherein the first orifice plate and the second orifice plate are each positionally adjustable in the first direction, the orifice plate adjustment device further comprising a first transmission for driving the first orifice plate and a second transmission for driving the second orifice plate.
8. A fire fighting foam spray system as recited in claim 1,
the muddy ware includes the muddy pipeline of stirring, the impeller is established in the muddy pipeline of stirring, the axial of impeller and foam mixed liquid flow direction in the muddy pipeline of stirring are parallel to each other.
9. A fire fighting foam spray system as recited in claim 8,
the muddy ware includes the installing support, the impeller shaft of impeller with the installing support links to each other, the impeller includes a plurality of blades, the rotation angle less than or equal to 30 of blade.
10. A fire fighting foam spray system as set forth in claim 8 or 9,
the impeller shaft of the impeller is a damping rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210668680.9A CN115025425A (en) | 2022-06-14 | 2022-06-14 | Fire-fighting foam spraying system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210668680.9A CN115025425A (en) | 2022-06-14 | 2022-06-14 | Fire-fighting foam spraying system |
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| CN115025425A true CN115025425A (en) | 2022-09-09 |
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| CN202210668680.9A Pending CN115025425A (en) | 2022-06-14 | 2022-06-14 | Fire-fighting foam spraying system |
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| CN203009879U (en) * | 2012-12-19 | 2013-06-19 | 中冶长天国际工程有限责任公司 | Micropressure adjusting valve |
| CN203090312U (en) * | 2012-12-27 | 2013-07-31 | 成都贝克利科技有限公司 | Pneumatic type foam proportion mixing device |
| CN203469276U (en) * | 2013-09-26 | 2014-03-12 | 西安新竹防灾救生设备有限公司 | Pumping-in type gas-driven mixed fire extinguishing device |
| CN206304262U (en) * | 2016-11-08 | 2017-07-07 | 中国核电工程有限公司 | A kind of foam tank extinguishing device |
| CN106730551A (en) * | 2017-01-10 | 2017-05-31 | 广州市鹰穗消防设备有限公司 | A kind of froth fire extinguishing system |
| CN208331293U (en) * | 2018-06-26 | 2019-01-04 | 北京清创晋华科技有限公司 | A kind of device adjusting cinder notch circulation area |
| CN109578604A (en) * | 2018-12-16 | 2019-04-05 | 中国航发沈阳发动机研究所 | Lube pipe throttle hole area regulating device |
| CN214415461U (en) * | 2020-12-30 | 2021-10-19 | 长春福尔曼电控科技有限公司 | Foam mixing fire extinguishing device |
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