CN202810894U

CN202810894U - Foam preparation device

Info

Publication number: CN202810894U
Application number: CN201220414121.7U
Authority: CN
Inventors: 吕新璐; 赵洪义; 朱化雨; 潘建伟; 宋南京; 李因文; 朱孔赞
Original assignee: Shandong Hongyi Technology Co Ltd
Current assignee: Anhui Conch New Materials Technology Co Ltd
Priority date: 2012-08-20
Filing date: 2012-08-20
Publication date: 2013-03-20
Anticipated expiration: 2022-08-20

Abstract

The utility model discloses a foam preparation device. The technical scheme includes that the foam preparation device comprises a grouting pipe, a filter, a blow-off pipe, a pipeline mixer, a foam maker, an air inlet pipe, and an air feeder, wherein the filter is connected with an outlet of the grouting pipe, the blow-off pipe and the pipeline mixer are respectively communicated with the filter, the foam maker is communicated with an outlet of the pipeline mixer, the air inlet pipe is communicated with the foam maker, a check valve, a pressure gauge B and an air inlet pipe valve are sequentially installed on the air inlet pipe, the air feeder is connected with the pipeline mixer, the pipeline mixer comprises a mixer barrel body and a spiral piece, the spiral piece comprises left spiral pieces and right spiral pieces, the left spiral pieces and the right spiral pieces are fixedly arranged inside the mixer barrel body in a spaced mode, and the ratio of length to section diameter (L/D) of the pipeline mixer is ranged between 0-30. The foam preparation device is suitable for rapid extinguishing and effective prevention and control of coal spontaneous combustion fires in a coal mine.

Description

The foam preparation facilities

Technical field

The utility model relates to a kind of spontaneous combustion and fire-extinguishing apparatus of mine control coal, specifically, relates in particular to a kind of foam preparation facilities.

Background technology

In recent years, the mining technology is widelyd popularize and is used, and coal production efficient is significantly improved, but this coal-mining method height is large, the goaf leave over residual coal many, leak out serious so that the rising of spontaneous combustionof coal occurrence frequency.In case the colliery breaking out of fire, gently then impact is produced, and is heavy then may burn whole production equipments of down-hole, even causes great casualties, spontaneous combustionof coal to become one of China's mine Major Natural Disasters.According to authentic data, in China's State owned coal mine, the fire that Conflagration Caused by Coal Self-ignition causes accounts for 90% of mine fire sum, has caused huge economy damage, casualties and environment pollution.Be effectively control spontaneous combustionof coal, adopted in recent years contain solid (flyash or yellow mud), liquid, gas (nitrogen or air) three-phase froth is prevented and treated spontaneous combustionof coal, has obtained preferably effect.

Foam-making apparatus commonly used is mainly net formula foam maker at present, and this net formula foam maker relatively is applicable to prepare the two-phase foam, or the solid material of preparation is fine and smooth, and even-grained three-phase froth is not prepared with larger particles, the inhomogeneous three-phase froth of dynamics but be suitable for.The other foam concrete frostproof froth n device used of mine foam cement placement machine and building trade, foam maker has high-speed stirred blade and compressed air system to steep two types, the foam maker coefficient of foaming of these kinds is lower, generally only have and be 3-8 times, use cost is high, can not give full play to anti-fire extinguishing function.In addition, the slurries of three-phase froth have certain viscosity and contain larger solid particle, when the preparation three-phase froth, general hybrid mode can not make blowing agent, mud (perhaps flyash) and other raw materials in the slurries mix, make quantity and the stability difference of foam of generation large, cause fireproof performance unstable, and frequent plugging can occur, cause to form continuously three-phase froth.Therefore, three-phase froth is subject to certain restrictions in the promoting the use of of mine.

Summary of the invention

The utility model purpose provides a kind of foam preparation facilities, to overcome quantity and the large defective of stability difference of the foam that foam-making apparatus produces in the prior art.

For overcoming defects, the utility model has adopted following technical scheme: a kind of foam preparation facilities comprises Grouting Pipe; The strainer that links to each other with described Grouting Pipe outlet; The blow-off pipe that is connected with described strainer; The pipe-line mixer that is connected with described strainer; The foam maker that is connected with described pipe-line mixer outlet; With the air inlet pipe that described foam maker is connected, order is equipped with non retern valve, pressure meter B, air inlet pipe valve on the described air inlet pipe; The feeder that is connected with described pipe-line mixer; Described pipe-line mixer comprises mixer tube and flight, described flight comprises left-hand screw sheet and right-hand screw sheet, described left-hand screw sheet and right-hand screw sheet interval fixedly are located at mixer tube inside, and the length of described pipeline gaseous mixture and the ratio of diameter of section are that the L/D scope is 10～30.

Described foam maker comprises the foam maker cylindrical shell, be provided with Venturi tube, fixed bar, current collector and impeller in the described foam maker cylindrical shell, described Venturi tube larynx neck place is provided with the air inlet pipe that links to each other with feeder, and described current collector is fixed in the front end of fixed bar, and described impeller is fixed on the fixed bar postmedian.

Compared with prior art, the beneficial effects of the utility model: the mixed process of the blender in the utility model is that the flight mixed cell by the different size of series installation in hollow pipe carries out, because the effect of mixed cell, when making fluid and left-handed, the time and dextrorotation constantly changes flow direction, not only push central liquid stream to periphery, and push peripheral fluid to center, thereby cause good radially mixed effect; Meanwhile, the turning effort of fluid self also occurs on the interface of adjacent component junction, and this perfect radial circular flow immixture makes material obtain the effect that mixes; It is simple that the utility model possesses flow process, the advantages such as compact conformation, energy consumption are little, small investment, operating flexibility are large, need not keep in repair, not plugging.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the structural representation of the pipe-line mixer in the utility model.

Among the figure: 1, Grouting Pipe; 2, strainer; 3, pipe-line mixer; 4, foam maker; 5, feeder; 6, advance the slurry valve; 7, blow-off pipe; 8, blowoff valve; 9, screen pack; 10, pressure meter A; 11, Venturi tube; 12, current collector; 13, fixed bar; 14, impeller; 15, air inlet pipe; 16, air inlet pipe valve; 17, pressure meter B; 18, non retern valve; 19, left handed twist flight; 20, flight is reversed on the right side.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

As shown in Figure 1 and Figure 2, a kind of foam preparation facilities mainly comprises pipeline Grouting Pipe 1, strainer 2, blender 3, foam maker 4 and feeder 5.Grouting Pipe 1 outlet is communicated with strainer 2 entrances, and the entrance of strainer 2 is provided with into slurry valve 6; Strainer 2 is made of the screen pack 9 in communicating pipe, the communicating pipe of being located at; Communicating pipe, the bottom was provided with the blow-off pipe 7 of blowoff valve 8 control; What be connected with strainer 2 outlets is pipe-line mixer 3, pipe-line mixer 3 comprises mixer tube and mixed cell, described mixed cell is by one channel left handed twist flight 19, the right side is reversed flight 20 assembly weldings and is formed, the flight 20 mixer tube inside that fixedly are located at spaced apart are reversed on described left handed twist flight 19 and the right side, because the effect of mixed cell, when making fluid and left-handed, the time and dextrorotation, constantly change flow direction, not only push central liquid stream to periphery, and push peripheral fluid to center, form good radially mixed effect, the length of described pipe-line mixer 3 and the ratio L/D of diameter of section remain on 10～30 scope, can reach better mixed effect; What be connected with pipe-line mixer 3 outlets is foam maker 4, and described foam maker 4 is provided with air inlet port, and air inlet port connects feeder system 5 by air inlet pipe 15; Venturi tube 11 is arranged in the foam maker 4, there is the air inlet pipe 15 that links to each other with feeder 5 at Venturi tube 11 larynx neck places, the periphery of Venturi tube 11 is provided with the space of a plurality of introducing gases, and gas enters in the Venturi tube 11 from entering the space after air inlet pipe enters the foam maker cylindrical shell; Be arranged at the front end that foam maker 4 interior current collectors 12 are installed on fixed bar 13; What be arranged at fixed bar 13 postmedians is impeller 14; The afterbody of the cylindrical shell of foam maker 4 be provided with can before and after regulate the slideway of current collector 12; One air inlet pipe 15 is installed on the foam maker 4, and the cylindrical shell of foam maker 4 links to each other with feeder 5 by air inlet pipe 15; Air intake valve 16, suction press table B17, non retern valve 18 are installed on the air inlet pipe 15; Described feeder 5 is for annotating nitrogen machine or air compressor.

All be to be linked in sequence by the flange threaded fastener to form between this system's middle filtrator 2, pipe-line mixer 3, the foam maker 4; The strainer 2 that links to each other with pipe-line mixer 3 can effectively be removed impurity in the slurries and large solid particle; The pressure meter A10 that arranges and pressure meter B17 can clearly show the pressure in each pipeline; Non retern valve 18 can be avoided flowing in the compressed air line owing to the little slurries that make of pressure of gas; Pipe-line mixer 3 is not needing in the outer power situation, slurries pass through pipe-line mixer 3 meetings and produce the effects such as shunting, intersection mixing and reverse eddy flow, the medicament of adding is diffused in the whole water body rapidly, equably, reaches the purpose that moment mixes, have energy-efficient effect; Fixed bar 13 in foam maker 4 cylindrical shells, impeller 14, current collector 12 have consisted of jet regulator; Impeller 14 rotation under the mix slurry mobilization dynamic promotes can increase the stability of foam, makes foam finer and smoother, even; Foam maker 4 preparation three-phase froths, take compressed air or nitrogen as gas phase, use air after three-phase froth can make the cost decrease.

The utility model course of work is as follows:

When normal operation, flyash (yellow mud) is from grouting pump input Grouting Pipe 1, and the raw material of blowing agent and other compositions enters strainer 2 by quantitative adding device, controls slurries amount size in the Grouting Pipe 1 by advancing slurry valve 6; The slurry stream for preparing in the Grouting Pipe 1 tunnel can be removed impurity and large solid particle through behind the filter 3, enters pipe-line mixer 3 and foam maker 4; Open valve 16, open feeder 5, feeder 5 is pressed into compressed air or nitrogen by air inlet pipe 15 in foam maker 4, by the size of pressure meter B17 adjusting air inflow quantity, make slurries foaming form gas-liquid-solid three-phase froth take nitrogen or air as gas phase, according to the demonstration of pressure meter A10, if need cleaning strainer 3, that closes strainer 3 advances slurry valve 6 and air inlet pipe valve 16, opens blow-off pipe valve 8, and the waste material that leaches flows out from blow-off pipe 7.

Slurry fully mixes in pipe-line mixer 3 afterwards by strainer 2, then enter in the Venturi tube 11 of variable cross-section, according to the Venturi tube principle, slurries are passing through Venturi tube 11, after being subject to again current collector 12 resistances, the flow velocity of mud increases, fine pressure reduces and forms negative pressuren zone, make a plurality of air inlets that gas passes through Venturi tube 11 peripheries by injection in Grouting Pipe 1 tunnel, thereby produce the anti-fire foam of higher multiple; Simultaneously, under the impact at foam mud after at first producing anti-fire foam around the afflux district of current collector 12, impeller 14 is pushed rotation and makes the further refinement of foam and evenly, contains the preventing gas fire foam and can be directly injected in the goaf that spontaneous combustionof coal easily occurs flame range through what foam device produced.

Claims

1. a foam preparation facilities comprises: Grouting Pipe (1);

The strainer (2) that links to each other with described Grouting Pipe (1) outlet;

The blow-off pipe (7) that is connected with described strainer (2);

The pipe-line mixer (3) that is connected with described strainer (2);

The foam maker (4) that is connected with described pipe-line mixer (3) outlet;

The air inlet pipe (15) that is connected with described foam maker, the upper order of described air inlet pipe (15) is equipped with non retern valve (18), pressure meter B(17), air inlet pipe valve (16);

The feeder (5) that is connected with described pipe-line mixer (3);

It is characterized in that, described pipe-line mixer (3) comprises mixer tube and mixed cell, described mixed cell reverses flight (20) assembly welding by left handed twist flight (19), the right side of one channel and forms, described left handed twist flight (19) reverses flight (20) interval with the right side and is fixedly connected with, and the length of described pipe-line mixer (3) and the ratio L/D scope of cross-sectional diameter remain between 10～30.

2. foam preparation facilities according to claim 1, it is characterized in that: described foam maker (4) comprises the foam maker cylindrical shell, be provided with Venturi tube (11), current collector (12), fixed bar (13) and impeller (14) in the described foam maker (4), described Venturi tube (11) larynx neck place is provided with the air inlet pipe (15) that links to each other with feeder (5), described current collector (12) is fixed in the front end of fixed bar (13), and described impeller (14) is fixed on fixed bar (13) postmedian.