CN215025509U - Foaming device for coal mine fire prevention and extinguishing - Google Patents
Foaming device for coal mine fire prevention and extinguishing Download PDFInfo
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- CN215025509U CN215025509U CN202120807868.8U CN202120807868U CN215025509U CN 215025509 U CN215025509 U CN 215025509U CN 202120807868 U CN202120807868 U CN 202120807868U CN 215025509 U CN215025509 U CN 215025509U
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- cavity
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- air inlet
- extinguishing
- fire prevention
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Abstract
The utility model discloses a foaming device for coal mine fire prevention and extinguishing, which comprises a barrel body, wherein a feeding pipe, a first foaming cavity, a second foaming cavity, a third foaming cavity and a nozzle outlet which are sequentially communicated are arranged in the barrel body, the first foaming cavity comprises a first air inlet cavity, a first shunting cavity and a first diffusion cavity, and the third foaming cavity comprises a second air inlet cavity, a mixing cavity and a second diffusion cavity; the two sides of the air inlet cavity I are provided with an air inlet I, the two sides of the air inlet cavity are provided with an air inlet II, and the volumes of the air inlet cavity I and the air inlet cavity II are gradually reduced from left to right. The foaming device is provided with three stages of foaming cavities, and has the advantages of high foaming rate, low energy consumption and simple structure.
Description
Technical Field
The utility model belongs to the technical field of the coal mine safety technique and specifically relates to a foaming device is used in colliery fire prevention and extinguishing.
Background
Coal mine fire not only produces a large amount of toxic and harmful gases such as CO and SO2And the air pollution can cause serious economic loss, and the life safety of coal mine operators is extremely easy to be damaged, so that the fire prevention and extinguishing of the coal mine are very important. The foam fire prevention and extinguishing mode is a fire prevention and extinguishing mode frequently used in coal mines, a foaming device is adopted to foam foaming liquid, so that the fire prevention and extinguishing effect is achieved, and the energy consumption and the foaming rate of different foaming devices are different.
Chinese patent application No. (2013100545329) discloses a self-priming air type cyclone foaming device for coal mine dust fall, which mainly comprises a foaming liquid supply pipe, a jet nozzle, an air suction mixing cylinder and a foaming cylinder, wherein the foaming liquid supply pipe is connected with the jet nozzle, the air suction mixing cylinder is internally provided with an air suction chamber, an air-liquid mixing chamber and a diffusion foaming chamber in sequence, the jet nozzle is connected into the air suction chamber, the air suction chamber is provided with an air suction hole, and the foaming cylinder is internally provided with a cyclone foaming chamber and a foam outflow chamber in sequence. Foaming liquid with set pressure is sprayed at high speed through a jet nozzle to form turbulent jet flow, air in the environment automatically enters an air suction chamber through an air suction hole under the suction action of the turbulent jet flow, the air is brought into a gas-liquid mixing chamber from the air suction chamber by the jet flow to transfer energy and mass with the foaming liquid, the accelerated and compressed air is dispersed into a foam chamber and is crushed into bubbles by liquid drops, and the preliminarily foamed bubble flow is fully foamed in a rotational flow foaming chamber. The device simple structure, convenient operation, the foaming rate is high, and the energy consumption is low, safe and reliable, and the operation maintenance cost is low, but it only passes through once foaming, can not satisfy and use the occasion that requires high to foam fineness and foaming rate.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at prior art's not enough, provide a foaming device is used in colliery fire prevention and extinguishing, be provided with tertiary foaming chamber, the foaming rate is high, simple structure.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a foaming device for coal mine fire prevention and extinguishing comprises a barrel, wherein a feeding pipe, a foaming cavity I, a foaming cavity II, a foaming cavity III and a nozzle outlet are arranged in the barrel and are sequentially communicated, the foaming cavity I comprises an air inlet cavity I, a diversion cavity and a diffusion cavity I, and the foaming cavity III comprises an air inlet cavity II, a mixing cavity and a diffusion cavity II; the two sides of the air inlet cavity I are provided with an air inlet I, the two sides of the air inlet cavity are provided with an air inlet II, and the volumes of the air inlet cavity I and the air inlet cavity II are gradually reduced from left to right.
Furthermore, a first porous plate is arranged between the first diffusion cavity and the second foaming cavity.
Furthermore, the middle part of the porous plate is rotatably connected with a rotating shaft, and a rotating blade is arranged on the rotating shaft.
Furthermore, a second porous plate is arranged between the second diffusion cavity and the outlet of the spray head.
Furthermore, the first air inlet and the second air inlet are in threaded connection with an adjusting valve.
Further, the governing valve includes the inlet channel with the air inlet intercommunication, set up bell mouth and baffle in the inlet channel, the baffle lower part sets up the movable cover, and the movable cover center sets up the movable rod, and the movable rod passes the one end of baffle sets up the toper sprue, cup joints the spring on the movable rod.
Furthermore, a protrusion is arranged on the inner side of the baffle movable cover.
The utility model has the advantages that:
1. the utility model relates to a colliery is prevented and is put out a fire and use foaming device is provided with foaming chamber one, foaming chamber two, foaming chamber three, and gas-liquid mixture's is more even, and the foaming rate is high.
2. Foaming chamber one is including admitting air chamber one, reposition of redundant personnel chamber and diffusion chamber one, sets up the reposition of redundant personnel chamber and can improve the utility model discloses a foaming efficiency. A first porous plate is arranged between the first diffusion cavity and the second foaming cavity, and a rotating blade is arranged in the second foaming cavity to further refine foam and mix rotational flow for foaming; then further get into foaming chamber three, further foam with the air mixing in the chamber of admitting air two, the foam after the diffusion foaming is from the shower nozzle export blowout after the foaming of perforated plate two, and the foam is thin, and the foaming rate is high, can greatly increased the utility model discloses prevent the performance of putting out a fire.
3. The air inlet I and the air inlet II are in threaded connection with the adjusting valve, foam backflow can be prevented, and the air inlet I and the air inlet II are simple in structure and convenient to use.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the regulating valve.
In the figure: 1-a feeding pipe, 2-a gas inlet cavity I, 3-a diversion cavity, 4-a foaming cavity II, 5-a gas inlet cavity II, 6-a mixing cavity, 7-a diffusion cavity II, 8-a spray head outlet, 9-a diffusion cavity I, 10-a gas inlet I, 11-a gas inlet II, 12-a porous plate I, 13-a rotating shaft, 14-a rotating blade, 15-a porous plate II, 16-a regulating valve, 17-a conical opening, 18-a baffle plate, 19-a movable cover, 20-a conical block, 21-a movable rod, 22-a spring, 23-a bulge and 24-a gas inlet channel.
Detailed Description
The invention is further described with reference to the following figures and examples.
Example 1
As shown in figure 1, the foaming device for coal mine fire prevention and extinguishment comprises a cylinder body, wherein a feeding pipe 1, a foaming cavity I, a foaming cavity II 4, a foaming cavity III and a spray head outlet 8 are arranged in the cylinder body and are sequentially communicated.
The foaming cavity I comprises a gas inlet cavity I2, a flow dividing cavity 3 and a diffusion cavity I9, and the foaming cavity III comprises a gas inlet cavity II 5, a mixing cavity 6 and a diffusion cavity II 7; and the two sides of the first air inlet cavity 2 are provided with a first air inlet 10, the two sides of the second air inlet cavity 5 are provided with a second air inlet 11, and the volumes of the first air inlet cavity 2 and the second air inlet cavity 5 are gradually reduced from left to right. A first porous plate 12 is arranged between the first diffusion cavity 9 and the second foaming cavity 4, the middle part of the first porous plate 12 is rotatably connected with a rotating shaft 13, and a rotating blade 14 is arranged on the rotating shaft; and a second porous plate 15 is arranged between the second diffusion cavity 7 and the spray head outlet 8.
When foaming liquid enters the foaming cavity through the feeding pipe 1, negative pressure generated in the air inlet cavity I2 can cause air to enter the air inlet cavity I2 through the air inlet I10 to be fully mixed, then the air enters the diversion cavity 3, the diversion cavity is arranged to increase the foaming amount of the foaming device, and the foaming is fully diffused and foamed in the diffusion cavity I9; when the foaming liquid enters the foaming cavity II 4, on one hand, the porous plate I12 can play a role in refining the foam, and in addition, the mixture of the foaming liquid, the air and the foam is guided by the rotating blades 14 to be sent to rotate for further mixing and foaming; and then the foam enters a foaming cavity III, the foam is further mixed with air and foamed in an air inlet cavity II 5, the foam after diffusion foaming is sprayed out from a spray head outlet 8 after being foamed by a porous plate II 15, the foam is fine, and the foaming rate is high.
Example 2
As a preferred embodiment, as shown in fig. 2, in this embodiment, a regulating valve 16 is screwed on a first air inlet 10 and a second air inlet 11 to prevent backflow of foam, and the specific structure is that the regulating valve 16 includes an air inlet channel 24 communicated with the air inlet, a conical opening 17 and a baffle 18 are arranged in the air inlet channel 24, wherein two ends of the baffle 18 are fixed in the air inlet channel 24 without affecting the flow of air, a movable cover 19 is arranged at the lower part of the baffle 18, a movable rod 21 is arranged at the center of the movable cover 19, a conical block 20 is arranged at one end of the movable rod 21 penetrating through the baffle 18, and a spring 22 is sleeved on the movable rod 21; the inner side of the baffle movable cover 19 is provided with a bulge 23. When negative pressure exists in the first air inlet 10 and the second air inlet 11, the movable cover 19 drives the conical plugging block 20 to move downwards under the action of the negative pressure, and the regulating valve 16 is opened to realize air inlet; when the negative pressure disappears, the conical block 20 moves upwards to block the air inlet channel 24 under the action of the spring 22, and the reverse flow is prevented.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The utility model provides a foaming device is used in colliery fire prevention and extinguishing which characterized in that: the foaming device comprises a barrel, wherein a feeding pipe (1), a foaming cavity I, a foaming cavity II (4), a foaming cavity III and a nozzle outlet (8) which are sequentially communicated are arranged in the barrel, the foaming cavity I comprises an air inlet cavity I (2), a flow dividing cavity (3) and a diffusion cavity I (9), and the foaming cavity III comprises an air inlet cavity II (5), a mixing cavity (6) and a diffusion cavity II (7); the two sides of the first air inlet cavity (2) are provided with a first air inlet (10), the side edge of the second air inlet cavity (5) is provided with a second air inlet (11), and the volumes of the first air inlet cavity (2) and the second air inlet cavity (5) are gradually reduced from left to right.
2. The coal mine fire prevention and extinguishing foaming device according to claim 1, wherein: and a first porous plate (12) is arranged between the first diffusion cavity (9) and the second foaming cavity (4).
3. The foaming device for coal mine fire prevention and extinguishing according to claim 2, wherein: the middle part of the first porous plate (12) is rotatably connected with a rotating shaft (13), and a rotating blade (14) is arranged on the rotating shaft.
4. The coal mine fire prevention and extinguishing foaming device according to claim 1, wherein: and a second porous plate (15) is arranged between the second diffusion cavity (7) and the spray head outlet (8).
5. The coal mine fire prevention and extinguishing foaming device according to claim 1, wherein: and the first air inlet (10) and the second air inlet (11) are in threaded connection with an adjusting valve (16).
6. The foaming device for coal mine fire prevention and extinguishing according to claim 5, wherein: governing valve (16) include the inlet channel with the air inlet intercommunication, set up in the inlet channel toper mouth (17) and baffle (18), baffle (18) lower part sets up removable cover (19), and removable cover (19) center sets up movable rod (21), and movable rod (21) pass the one end of baffle (18) sets up toper sprue (20), cup joints spring (22) on movable rod (21).
7. The foaming device for coal mine fire prevention and extinguishing according to claim 6, wherein: the inner side of the movable cover (19) is provided with a bulge (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120807868.8U CN215025509U (en) | 2021-04-20 | 2021-04-20 | Foaming device for coal mine fire prevention and extinguishing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120807868.8U CN215025509U (en) | 2021-04-20 | 2021-04-20 | Foaming device for coal mine fire prevention and extinguishing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215025509U true CN215025509U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120807868.8U Expired - Fee Related CN215025509U (en) | 2021-04-20 | 2021-04-20 | Foaming device for coal mine fire prevention and extinguishing |
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| CN (1) | CN215025509U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115463499A (en) * | 2022-10-19 | 2022-12-13 | 安徽理工大学 | Self-air-suction foaming foam dust removal device and method for air return gallery of excavation working face |
-
2021
- 2021-04-20 CN CN202120807868.8U patent/CN215025509U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115463499A (en) * | 2022-10-19 | 2022-12-13 | 安徽理工大学 | Self-air-suction foaming foam dust removal device and method for air return gallery of excavation working face |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211207 |