CN211434852U

CN211434852U - High-water-content material foaming device for coal mine fire prevention and extinguishing

Info

Publication number: CN211434852U
Application number: CN201921986740.1U
Authority: CN
Inventors: 张自政; 邓敏; 吴秋红; 于宪阳; 吴海
Original assignee: Hunan University of Science and Technology
Current assignee: Hunan University of Science and Technology
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-09-08
Anticipated expiration: 2029-11-15

Abstract

The utility model discloses a high water material foaming device for colliery fire prevention and extinguishment, it comprises first group's thick liquid inlet pipe (1), second group's thick liquid inlet pipe (2), foamer inlet pipe (3), first group's thick liquid feeding control flap (4), second group's thick liquid feeding control flap (5), foamer feeding control flap (6), mixing stirring device (7), ejection of compact valve (8), pump (9), foaming device (10), air compressor machine (11), intake pipe (12), intake pipe valve (13), gas nozzle (14), mix thick liquid atomizing nozzle (15), foaming net (16), slip casting ejection of compact valve (17), slip casting discharging pipe (18). The device can fully foam high-water materials and filter out foam which is large in diameter, unstable and easy to break; can effectively utilize high-water materials to quickly extinguish coal mine underground and prevent coal spontaneous combustion fire.

Description

High-water-content material foaming device for coal mine fire prevention and extinguishing

Technical Field

The utility model relates to a foam generating device, in particular to a mining fire-proof foam generator.

Background

Coal spontaneous combustion is one of main natural disasters of mines in China, the economic loss caused by coal mine fires in China exceeds 200 billion yuan, and coal field fires also cause large-area vegetation damage to cause soil desertification. In addition, coal spontaneous combustion can generate a large amount of SO₂、CO、CO₂And toxic gases and the like seriously pollute the environment. The process of generating coal mine fire is that active groups in underground coal bodies adsorb oxygen molecules, chemical reaction is carried out to release heat, the temperature of the coal bodies is raised until the ignition point is reached, and then high-temperature coal rock cracks can occur. The key to preventing and controlling fire is to prevent and control the high-temperature coal-rock fractures. The high-water material foam is a novel and effective material for preventing and controlling high-temperature coal rock cracks. However, because of the difference of the application methods of high-water materials and other fire prevention and extinguishing materials, the existing fire prevention and extinguishing foam preparation device for mines is often poor in mixing and stirring effects, and is easy to cause pipe blockage, so that high-water material foam cannot be continuously formed, and the popularization and the application of the high-water material foam in mines are limited. Aiming at the current situation, a preparation device of mine fire prevention and extinguishing foam for rapidly extinguishing and preventing spontaneous combustion fire of coal in a coal mine by using high-water materials is urgently needed to be developed.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a mining fire prevention and extinguishing high-water material foaming device, which has simple structure, high foaming efficiency, fine and uniform generated foam and high stability; can effectively improve the fire extinguishing effect.

In order to realize the purpose, the utility model discloses a technical scheme is: the utility model provides a mining fire prevention high water material foaming device that puts out a fire, includes inlet pipe, feeding control valve, mixing stirring device, discharge valve, pump, foaming device, air compressor machine, inlet pipe valve, gas nozzle, foaming net, slip casting discharge valve, slip casting discharging pipe.

The feeding pipes and the feeding control valves are high-water material group A slurry feeding pipes and control valves thereof, high-water material group B slurry feeding pipes and control valves thereof, and foaming agent feeding pipes and control valves thereof respectively.

The mixing and stirring device consists of a stirring wheel with holes and a fixed middle shaft; the stirring wheel with holes is fixed on the middle shaft and is arranged at the position of the middle shaft of the mixing and stirring device.

The foaming device consists of a mixed slurry atomizing nozzle, a gas nozzle, a cone-like funnel device and a foaming net.

The gas nozzle is connected with the air compressor through the gas inlet pipe and is fixedly arranged in the foaming device.

The foaming net is small round holes with consistent diameters which are uniformly distributed at the outlet of the foaming device.

Compared with the prior art, the foaming net arranged on the foaming device can not only fully foam high-water materials, but also filter out some unstable and easily broken foams with larger diameter; the fire extinguishing material can effectively utilize high-water materials to quickly extinguish and prevent coal spontaneous combustion fire under a coal mine, and can be widely applied to the practice of fire preventing and extinguishing engineering of fire preventing and extinguishing materials made of three component materials; the device has the advantages of effective fire extinguishing and cooling to the fire or the area which is easy to have the fire, compact and reasonable structure, convenient maintenance, and suitability for quickly extinguishing and efficiently preventing coal spontaneous combustion fire in the underground coal mine.

Drawings

Fig. 1 is a schematic view of the using device of the present invention.

Fig. 2 is a schematic view of the stirring wheel of the present invention.

Detailed Description

As shown in the figure, the utility model provides a mine fire prevention and extinguishing high-water material foaming device which has simple structure, high foaming efficiency, fine and uniform generated foam and high stability; can effectively improve the fire extinguishing effect.

The utility model provides a mining fire prevention high water material foaming device that puts out a fire, including the inlet pipe (including first group's thick liquid inlet pipe 1, second group's thick liquid inlet pipe 2 and foamer inlet pipe 3), feeding control valve (including first group's thick liquid feeding control valve 4, second group's thick liquid feeding control valve 5 and foamer feeding control valve 6), mixing stirring device 7, discharge valve 8, pump 9, foaming device 10, air compressor machine 11, intake pipe 12, intake pipe valve 13, gas nozzle 14, mixed thick liquid atomizing nozzle 15, the foaming net 16, slip casting discharge valve 17, slip casting discharging pipe 18.

The feeding pipes and the feeding control valves are respectively a high-water material group A slurry feeding pipe 1 and a control valve 4 thereof, a high-water material group B slurry feeding pipe 2 and a control valve 5 thereof, and a foaming agent feeding pipe 3 and a control valve 6 thereof.

The mixing and stirring device 7 consists of a stirring wheel with holes and a fixed middle shaft; the stirring wheel with holes is fixed on the middle shaft and is arranged at the position of the middle shaft of the mixing and stirring device.

The foaming device consists of a gas nozzle 14, a mixed slurry atomizing nozzle 15, a cone-like funnel device and a foaming net 16.

The gas nozzle 14 is connected to the air compressor 11 via the inlet pipe 12 and is fixedly installed in the foaming device 10.

The foaming net 16 is a small circular hole with uniform diameter which is uniformly distributed at the outlet of the foaming device.

The using method comprises the following steps: the control valve through the control inlet pipe will dispose A, in the two sets of high water material thick liquids of second and the foaming agent proportionally carries mixing stirring device 7, the stirring wheel in mixing stirring device 7 is with three sets of material stirring and preliminary foaming, after the stirring mixes, open discharge valve 8, under the effect of pump 9, increase high water foaming material velocity of flow, make it evenly spray to foaming net 16 under the effect of mixing thick liquid atomizing nozzle 15 on, then open air compressor machine 11 and intake pipe valve 13, make the foaming net on the high water material fully foam once more, carry to the conflagration that takes place or very easily take place the conflagration region through the slip casting conveyer pipe at last.

Claims

1. The utility model provides a high water material foaming device for colliery fire prevention and extinguishment which characterized in that: the foaming device comprises a group A slurry feeding pipe (1), a group B slurry feeding pipe (2), a foaming agent feeding pipe (3), a group A slurry feeding control valve (4), a group B slurry feeding control valve (5), a foaming agent feeding control valve (6), a mixing and stirring device (7), a discharging valve (8), a pump (9), a foaming device (10), an air compressor (11), an air inlet pipe (12), an air inlet pipe valve (13), a gas nozzle (14), a mixed slurry atomizing nozzle (15), a foaming net (16), a grouting discharging valve (17) and a grouting discharging pipe (18); the group A slurry feeding pipe (1), the group B slurry feeding pipe (2) and the foaming agent feeding pipe (3) are connected with a mixing and stirring device (7) through connecting pipes, and a group A slurry feeding control valve (4), a group B slurry feeding control valve (5) and a foaming agent feeding control valve (6) are arranged between each feeding pipe and the mixing and stirring device (7) and used for controlling feeding; the other end of the mixing and stirring device (7) is connected with a pump (9) through a connecting pipe, and the two devices are directly arranged and controlled by a discharge valve (8) to control discharge; the outlet of the pump (9) is connected with a pipeline for conveying the mixed slurry of the high-water material to the foaming device (10), and a mixed slurry atomizing nozzle (15) is arranged at the port; the air compressor (11) is connected with an air inlet pipe (12) to convey compressed air into the foaming device (10), a gas nozzle (14) is arranged at the end of the air compressor, and an air inlet pipe valve (13) is arranged between the air compressor (11) and the foaming device (10) to control the flow of the air; a conical funnel device and a foaming net (16) are arranged in the foaming device (10); then is connected with a grouting discharging valve (17) and a grouting discharging pipe (18).

2. The high-water-content material foaming device for coal mine fire prevention and extinguishing according to claim 1, is characterized in that: the mixing and stirring device (7) consists of a stirring wheel with holes and a fixed middle shaft; the stirring wheel with holes is fixed on the middle shaft and is arranged at the position of the middle shaft of the mixing and stirring device.