CN211383587U - High-low pressure automatic switch-over fire control shower nozzle - Google Patents
High-low pressure automatic switch-over fire control shower nozzle Download PDFInfo
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- CN211383587U CN211383587U CN201921588905.XU CN201921588905U CN211383587U CN 211383587 U CN211383587 U CN 211383587U CN 201921588905 U CN201921588905 U CN 201921588905U CN 211383587 U CN211383587 U CN 211383587U
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Abstract
The utility model discloses a high-low pressure automatic switching fire control spray head, which comprises a spray head main body, wherein the spray head main body is provided with a main channel, a low pressure channel and a high pressure channel, and the low pressure channel is communicated with the main channel; the high-pressure channel is communicated with the main channel through a valve hole, and the spray head main body is correspondingly provided with a low-pressure spray nozzle and a high-pressure spray nozzle; a main valve core is maintained by a first elastic device to close the valve hole, and fluid in the main channel can push the main valve core to move to open the valve hole when the pressure is greater than a preset value; the nozzle body is internally provided with a piston cavity which is communicated with the low-pressure channel through a communicating hole; the head of a switching piece is matched with the piston cavity and is arranged in the piston cavity in a sliding mode, the switching piece can be pushed by fluid in the piston cavity to block a low-pressure channel, and a second elastic device used for pushing the switching piece to reset is arranged on the spray head main body. The utility model discloses can carry out work according to corresponding high pressure nozzle of fluidic pressure size automatic switch-over and low pressure nozzle, it is more nimble convenient to use.
Description
Technical Field
The utility model relates to a fire control facility field, in particular to fire control shower nozzle.
Background
The fire-fighting nozzle is mainly used for spraying fire-fighting media such as gas, fire extinguishing agents and the like, is a common component in a fire-fighting system, can be generally divided into a high-pressure nozzle, a medium-pressure nozzle and a low-pressure nozzle according to the working pressure of the existing fire-fighting nozzle, wherein the kinetic energy of fog drops generated by the high-pressure nozzle and the medium-pressure nozzle is large, and the high-pressure nozzle and the medium-pressure nozzle can impact the root of flame and have the advantages of good atomization effect, high fire extinguishing performance and the like, while the low-pressure nozzle has relatively poor atomization. In addition, part of the high-pressure water mist system adopts storage type pressure sources such as bottle bodies, the situation of insufficient pressure can occur after long-time use or idling, so that the high-pressure spray head can not be opened by utilizing the pressure of the pressure source, the fire extinguishing function is completely lost, and certain potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve one of the technical problem that exists among the prior art at least, provide one kind and use nimble convenience, can reduce the fire-fighting equipment cost, the high-low pressure automatic switch-over fire control shower nozzle of reinforcing reliability.
In order to achieve the above purpose, the utility model provides a technical scheme is:
a high-low pressure automatic switching fire control spray head comprises a spray head main body, wherein the spray head main body is provided with a main channel, a low pressure channel and a high pressure channel,
the low-pressure channel is communicated with the main channel, and the spray head main body is provided with a low-pressure nozzle matched with the low-pressure channel;
the high-pressure channel is communicated with the main channel through a valve hole, and the spray head main body is provided with a high-pressure nozzle matched with the high-pressure channel;
a main valve core is movably arranged on the nozzle body and is maintained at a position for closing the valve hole by a first elastic device, and fluid in the main channel can push the main valve core to move to open the valve hole when the pressure is greater than a preset value;
the spray head main body is internally provided with a piston cavity communicated with the high-pressure channel, and the piston cavity is communicated with the low-pressure channel through a communicating hole; the head of a switching piece is matched with the piston cavity and is arranged in the piston cavity in a sliding mode, the switching piece can be pushed by fluid entering the piston cavity from a high-pressure channel and moves to enable the tail of the switching piece to be inserted into the low-pressure channel through the communication hole so as to block the low-pressure channel, and a second elastic device used for pushing the switching piece to move towards the direction of opening the low-pressure channel is arranged on the spray head main body.
Preferably, a cross-sectional area of a head portion of the switch in a direction perpendicular to a moving direction of the switch is larger than a cross-sectional area of a tail portion of the switch in a direction perpendicular to the moving direction of the switch.
Preferably, the cross section of the switching piece is in a T shape, the larger part of the switching piece is matched with the piston cavity, and the smaller part of the switching piece is matched with the communicating hole and movably arranged in the communicating hole in a penetrating way.
Preferably, the communication hole is located on a side wall of one side of the low-pressure channel, a positioning groove matched with the tail of the switching piece is formed in the side wall of the other side of the low-pressure channel, and the switching piece can move to enable the tail of the switching piece to be inserted into the positioning groove under the pushing of fluid in the high-pressure channel.
Preferably, a low-pressure swirler is arranged in the low-pressure nozzle.
Preferably, a high-pressure swirler is arranged in the high-pressure nozzle.
Preferably, the number of the low-pressure nozzles is several and is evenly distributed around the high-pressure nozzle.
Preferably, a filter screen is arranged in the main channel.
Preferably, the valve hole is conical, the shape of the head of the main valve element is matched with the shape of the valve hole, the head of the main valve element can be inserted into the valve hole, and the outer wall of the main valve element is tightly attached to the inner wall of the valve hole so as to seal the valve hole.
Preferably, the upper end of the valve hole is provided with a guide groove matched with the tail part of the main valve core, and the tail part of the main valve core is inserted into the guide groove and can move along the guide groove to enable the head part of the main valve core to move out of the valve hole so as to open the valve hole.
The utility model has the advantages that: in the working process of the utility model, when the pressure of the fluid introduced into the main channel is less than the preset value, the fluid can not push the main valve core to move, therefore, the main valve core can keep the sealing of the valve hole, so that the fluid can not enter the high-pressure channel through the valve hole, correspondingly, the head of the switching piece can not be pushed by the fluid, the second elastic device can maintain the switching piece at the position for keeping the low-pressure channel open, and the fluid such as the fire extinguishing agent or the fire extinguishing gas in the main channel can be sprayed out by the low-pressure nozzle through the low-pressure channel; when the pressure of the fluid introduced into the main channel is greater than a preset value, the fluid can push the main valve core to move to open the valve hole, so that the fluid can enter the high-pressure channel and then be sprayed out from the high-pressure nozzle, meanwhile, the fluid in the high-pressure channel can push the switching piece to move to block the low-pressure channel, the fluid is prevented from entering the low-pressure nozzle through the low-pressure channel, and after the pressure of the fluid is reduced to the preset value or the fluid supply is cut off, the main valve core can move to re-close the valve hole under the action of the first elastic device, and meanwhile, the switching piece can move back to open the low-pressure channel under the action of the second elastic device, so that the utility model can automatically switch the corresponding high-pressure nozzle and the low-pressure nozzle to work according to the pressure of the fluid, is more flexible and convenient to use, and does not need to be, can effectively reduce fire-fighting equipment cost, the suitability is also stronger, all is suitable for high-pressure system and low pressure system, in addition, to high-pressure system, when the decay appears in the pressure source, thereby still can keep certain fire performance through low pressure passageway and low pressure nozzle work of putting out a fire, can effectively reduce the potential safety hazard.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is an overall block diagram of a preferred embodiment of the present invention;
fig. 2 is an exploded view of a preferred embodiment of the invention;
fig. 3 is a partially enlarged view of a portion a in fig. 2;
FIG. 4 is a cross-sectional view of the preferred embodiment of the present invention in a low pressure state;
FIG. 5 is a sectional view of a part of a head main body according to a preferred embodiment of the present invention;
fig. 6 is a cross-sectional view of the preferred embodiment of the present invention in a high pressure state.
Detailed Description
Referring to fig. 1 to 6, in a preferred embodiment of the present invention, a high-low pressure automatic switching fire sprinkler includes a sprinkler body 10, the sprinkler body 10 has a main channel 20, a low pressure channel 30 and a high pressure channel 40, wherein the low pressure channel 30 is communicated with the main channel 20, and the sprinkler body 10 is provided with a low pressure nozzle 31 adapted to the low pressure channel 30; the high-pressure channel 40 is communicated with the main channel 20 through a valve hole 11, and the spray head main body 10 is provided with a high-pressure nozzle 41 matched with the high-pressure channel 40; a main valve element 12 movably mounted on the nozzle body 10 and maintained in a position closing the valve hole 11 by a first elastic means 13, the fluid in the main passage 20 being capable of pushing the main valve element 12 to move to open the valve hole 11 when the pressure is greater than a predetermined value; the nozzle body 10 is internally provided with a piston cavity 14 communicated with the high-pressure channel 40, and the piston cavity 14 is communicated with the low-pressure channel 30 through a communicating hole 15; a head portion of a switching member 50 is fitted to the piston chamber 14 and slidably disposed in the piston chamber 14, the switching member 50 is moved by the fluid entering the piston chamber 14 from the high pressure passage 40 to such an extent that a tail portion of the switching member 50 is inserted into the low pressure passage 30 via the communication hole 15 to block the low pressure passage 30, and a second elastic means 51 for urging the switching member 50 to move in a direction to open the low pressure passage 30 is provided on the head main body 10. In the working process of the utility model, when the pressure of the fluid introduced into the main channel 20 is less than the predetermined value, the fluid can not push the main valve element 12 to move, therefore the main valve element 12 can keep the sealing of the valve hole 11, so that the fluid can not enter the high-pressure channel 40 through the valve hole 11, correspondingly, the head of the switching piece 50 can not be pushed by the fluid, the second elastic device 51 can maintain the switching piece 50 at the position for keeping the low-pressure channel 30 open, and the fluid such as the fire extinguishing agent or the fire extinguishing gas in the main channel 20 can be sprayed out from the low-pressure nozzle 31 through the low-pressure channel 30; when the pressure of the fluid introduced into the main passage 20 is greater than the predetermined value, the fluid can push the main valve element 12 to move to open the valve hole 11, so that the fluid can enter the high-pressure passage 40 and then be ejected from the high-pressure nozzle 41, meanwhile, the fluid in the high-pressure passage 40 can push the switching member 50 to move to block the low-pressure passage 30, so as to prevent the fluid from entering the low-pressure nozzle 31 through the low-pressure passage 30, and after the pressure of the fluid is reduced below the predetermined value or the fluid is disconnected from being supplied, the main valve element 12 can move to re-close the valve hole 11 under the action of the first elastic device 13, and the switching member 50 can move back to open the low-pressure passage 30 under the action of the second elastic device 51, so that the utility model can automatically switch the corresponding high-pressure nozzle 41 and the low-pressure nozzle 31 to work according to the pressure of the fluid, to the place that has the demand, also need not to be equipped with high-pressure system and low pressure system simultaneously, can effectively reduce fire-fighting equipment cost, the suitability is also stronger, all is suitable for high-pressure system and low pressure system, in addition, to high-pressure system, when the decay appears in the pressure source, thereby still can carry out the work of putting out a fire through low pressure passageway 30 and low pressure nozzle 31 and maintain certain fire performance, can effectively reduce the potential safety hazard.
As a preferred embodiment of the present invention, it may also have the following additional technical features:
the cross-sectional area of the head portion of the switching member 50 in the direction perpendicular to the moving direction of the switching member 50 is larger than the cross-sectional area of the tail portion of the switching member 50 in the direction perpendicular to the moving direction of the switching member 50, so that it can be ensured that when the valve hole 11 is opened, the thrust applied to the head portion of the switching member 50 by the fluid in the high-pressure passage 40 can be larger than the thrust applied to the tail portion of the switching member 50 by the fluid in the low-pressure passage 30, and it can be ensured that the fluid entering the piston chamber 14 can push the switching member 50 to move to.
In the embodiment, the cross section of the switching member 50 is "T" shaped, the larger part of the switching member 50 is adapted to the piston cavity 14, the smaller part of the switching member is adapted to the communication hole 15 and movably penetrates through the communication hole 15, the shape is regular, the processing and the assembly are easy, meanwhile, the cross section of the head part of the switching member is larger than that of the tail part of the switching member, and in addition, because the smaller part and the larger part of the switching member 50 are respectively adapted to the communication hole 15 and the piston cavity 14, the leakage of the fluid in the high-pressure channel 40 and the fluid in the low-pressure channel 30 to the middle part of the switching member 50 can be reduced or prevented, and the movement. In this embodiment, the second elastic device 51 adopts a spring sleeved on the switching member 50, and has a simple structure, and is convenient to assemble and use, and in practical application, the second elastic device 51 can also adopt other common elastic structures such as an elastic pull rope. In practical applications, the switching member 50 may also be selected from other suitable shapes according to needs, and is not limited to this.
The communication hole 15 is located on one side wall of the low-pressure channel 30, the positioning groove 32 matched with the tail portion of the switching piece 50 is arranged on the other side wall of the low-pressure channel 30, the switching piece 50 can move under the pushing of fluid in the high-pressure channel 40 to enable the tail portion of the switching piece 50 to be inserted into the positioning groove 32, so that the switching piece 50 can be fixed and positioned, the switching piece 50 is prevented from deforming or breaking under the impact of the fluid in the low-pressure channel 30, the service life can be prolonged, and the switching piece is safe and reliable.
In this embodiment, the low pressure swirler 33 is disposed in the low pressure nozzle 31, the high pressure swirler 42 is disposed in the high pressure nozzle 41, and the low pressure swirler 33 and the high pressure swirler 42 can generate a centrifugal effect on water flow or air flow, increase tangential velocity of fluid, and improve a crushing effect, thereby improving fire extinguishing performance. The low pressure swirler 33 and the high pressure swirler 42 generate a centrifugal effect on the fluid through a spiral channel, in this embodiment, the low pressure swirler 33 and the high pressure swirler 42 are both in a cylindrical shape, the outer peripheral walls of the two are provided with spiral grooves 60, and these spiral grooves 60 and the inner walls of the corresponding low pressure nozzle 31 or the high pressure nozzle 41 together enclose a spiral channel, so that the structure is simple, and the processing and the use are convenient. In practical applications, low-pressure swirler 33 may be provided only in low-pressure nozzle 31 or high-pressure swirler 42 may be provided only in high-pressure nozzle 41, as needed, but not limited thereto.
In addition, in the present embodiment, a first saucer 34 is provided in the low-pressure passage 30 at a position near the low-pressure swirler 33, the first saucer 34 is provided with a plurality of first through holes corresponding to the spiral passages of the low pressure swirler 33 so as to guide and divide the fluid to form fluid bundles corresponding to the spiral passages of the low pressure swirler 33, thereby fully playing a role of the low pressure swirler 33 and reducing an impact applied to the low pressure swirler 33, and similarly, a second saucer 43 is provided at a position in the high pressure passage 40 close to the high pressure swirler 42, and a plurality of second through holes 431 are provided in the second saucer 43 corresponding to the spiral passages of the high pressure swirler 42 so as to guide and divide the fluid to form fluid bundles corresponding to the spiral passages of the high pressure swirler 42, thereby fully playing a role of the high pressure swirler 42 and reducing an impact applied to the high pressure swirler 42.
The number of the low pressure nozzles 31 is several and is uniformly distributed around the high pressure nozzles 41, which can improve the uniformity of the spray and also improve the spray amount, thereby enhancing the fire extinguishing effect.
The filter screen 21 is arranged in the main channel 20, so that impurities mixed in the fluid can be prevented from blocking the high-pressure channel 40, the low-pressure channel 30, the high-pressure nozzle 41 and the low-pressure nozzle 31, the fault occurrence rate is reduced, and the method is safer and more reliable.
In this embodiment, valve opening 11 is the toper, and the head shape of main valve element 12 and valve opening 11 shape looks adaptation, and main valve element 12's head can insert and establish in valve opening 11 and its outer wall hugs closely on the inner wall of valve opening 11 thereby closes valve opening 11, so can increase sealed face, improves sealed effect to also make main valve element 12 be difficult for appearing deformation damage, increase of service life.
The upper end of valve hole 11 is provided with the guide way 17 with the afterbody looks adaptation of main valve element 12, and main valve element 12's afterbody is inserted and is established in guide way 17 and can be followed guide way 17 and remove to making main valve element 12's head follow valve hole 11 and shift out in order to open valve hole 11, and guide way 17 can lead main valve element 12's removal, avoids main valve element 12 to appear the skew dislocation and influence this fire control shower nozzle's normal work, and simple structure, the processing and the assembly of being convenient for. In this embodiment, first elastic device 13 has adopted the spring of cover setting at main valve element 12 rear portion, and simple structure is reliable, and the assembly and use of being convenient for, and in practical application, first elastic device 13 also can adopt other commonly used elastic construction such as stay cord, torsional spring, or main valve element 12 also can adopt the valve plate and realizes opening or closing valve opening 11 through activity such as swing, rotation, these are all common technical means in this field, and the technical staff in this field can select for use as required in a flexible way, and not detailed herein.
The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.
The above is only the preferred embodiment of the present invention, as long as the technical solution of the purpose of the present invention is realized by the substantially same means, all belong to the protection scope of the present invention.
Claims (10)
1. The utility model provides a high low pressure automatic switch-over fire control shower nozzle which characterized in that: comprises a spray head main body (10), wherein the spray head main body (10) is provided with a main channel (20), a low-pressure channel (30) and a high-pressure channel (40),
the low-pressure channel (30) is communicated with the main channel (20), and a low-pressure nozzle (31) matched with the low-pressure channel (30) is arranged on the spray head main body (10);
the high-pressure channel (40) is communicated with the main channel (20) through a valve hole (11), and a high-pressure nozzle (41) matched with the high-pressure channel (40) is arranged on the spray head main body (10);
a main valve core (12) is movably arranged on the spray head body (10) and is maintained at a position for closing the valve hole (11) by a first elastic device (13), and when the pressure in the main channel (20) is larger than a preset value, the fluid can push the main valve core (12) to move to open the valve hole (11);
the spray head main body (10) is internally provided with a piston cavity (14) communicated with the high-pressure channel (40), and the piston cavity (14) is communicated with the low-pressure channel (30) through a communicating hole (15); the head of a switching piece (50) is matched with the piston cavity (14) and is arranged in the piston cavity (14) in a sliding mode, the switching piece (50) can be pushed by fluid entering the piston cavity (14) from a high-pressure channel (40) to move to enable the tail of the switching piece (50) to be inserted into the low-pressure channel (30) through the communication hole (15) to block the low-pressure channel (30), and a second elastic device (51) used for pushing the switching piece (50) to move towards the direction of opening the low-pressure channel (30) is arranged on the spray head main body (10).
2. The fire sprinkler head with automatic switching between high pressure and low pressure as claimed in claim 1, wherein: the cross-sectional area of the head of the switch (50) in the direction perpendicular to the moving direction of the switch (50) is larger than the cross-sectional area of the tail of the switch (50) in the direction perpendicular to the moving direction of the switch (50).
3. The fire sprinkler head capable of automatically switching between high pressure and low pressure as claimed in claim 2, wherein: the cross section of the switching piece (50) is in a T shape, the larger part of the switching piece is matched with the piston cavity (14), and the smaller part of the switching piece is matched with the communicating hole (15) and movably arranged in the communicating hole (15) in a penetrating way.
4. The fire sprinkler head with automatic switching between high pressure and low pressure as claimed in claim 1, wherein: the communicating hole (15) is positioned on the side wall of one side of the low-pressure channel (30), the side wall of the other side of the low-pressure channel (30) is provided with a positioning groove (32) matched with the tail part of the switching piece (50), and the switching piece (50) can move under the pushing of fluid in the high-pressure channel (40) to enable the tail part of the switching piece (50) to be inserted into the positioning groove (32).
5. The fire sprinkler head with automatic switching between high pressure and low pressure as claimed in claim 1, wherein: and a low-pressure swirler (33) is arranged in the low-pressure nozzle (31).
6. The fire sprinkler head with automatic switching between high pressure and low pressure as claimed in claim 1, wherein: and a high-pressure swirler (42) is arranged in the high-pressure nozzle (41).
7. The fire sprinkler head with automatic switching between high pressure and low pressure as claimed in claim 1, wherein: the number of the low-pressure nozzles (31) is a plurality and the low-pressure nozzles are uniformly distributed around the high-pressure nozzle (41).
8. The fire sprinkler head with automatic switching between high pressure and low pressure as claimed in claim 1, wherein: a filter screen (21) is arranged in the main channel (20).
9. The fire sprinkler head with automatic switching between high pressure and low pressure as claimed in claim 1, wherein: the valve hole (11) is conical, the shape of the head of the main valve element (12) is matched with the shape of the valve hole (11), the head of the main valve element (12) can be inserted into the valve hole (11), and the outer wall of the main valve element is tightly attached to the inner wall of the valve hole (11) so as to seal the valve hole (11).
10. A high and low pressure automatic switching fire sprinkler head according to claim 9, wherein: the upper end of the valve hole (11) is provided with a guide groove (17) matched with the tail part of the main valve core (12), and the tail part of the main valve core (12) is inserted in the guide groove (17) and can move along the guide groove (17) to enable the head part of the main valve core (12) to move out of the valve hole (11) to open the valve hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921588905.XU CN211383587U (en) | 2019-09-24 | 2019-09-24 | High-low pressure automatic switch-over fire control shower nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921588905.XU CN211383587U (en) | 2019-09-24 | 2019-09-24 | High-low pressure automatic switch-over fire control shower nozzle |
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| Publication Number | Publication Date |
|---|---|
| CN211383587U true CN211383587U (en) | 2020-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921588905.XU Active CN211383587U (en) | 2019-09-24 | 2019-09-24 | High-low pressure automatic switch-over fire control shower nozzle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110604895A (en) * | 2019-09-24 | 2019-12-24 | 九江中船消防设备有限公司 | High-low pressure automatic switch-over fire control shower nozzle |
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2019
- 2019-09-24 CN CN201921588905.XU patent/CN211383587U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110604895A (en) * | 2019-09-24 | 2019-12-24 | 九江中船消防设备有限公司 | High-low pressure automatic switch-over fire control shower nozzle |
| CN110604895B (en) * | 2019-09-24 | 2024-02-20 | 九江中船消防设备有限公司 | High-low pressure automatic switching fire control shower nozzle |
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