CN102434187A - Foam dust suppression system and foam dust suppression method for mine excavation - Google Patents

Foam dust suppression system and foam dust suppression method for mine excavation Download PDF

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Publication number
CN102434187A
CN102434187A CN2011103927468A CN201110392746A CN102434187A CN 102434187 A CN102434187 A CN 102434187A CN 2011103927468 A CN2011103927468 A CN 2011103927468A CN 201110392746 A CN201110392746 A CN 201110392746A CN 102434187 A CN102434187 A CN 102434187A
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CN
China
Prior art keywords
foam
dust suppression
compressed air
clear water
suction
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CN2011103927468A
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Chinese (zh)
Inventor
王爽
康立杰
王瑞枝
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康立杰
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Priority to CN2011103927468A priority Critical patent/CN102434187A/en
Publication of CN102434187A publication Critical patent/CN102434187A/en

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Abstract

Provided are a foam dust suppression system and a foam dust suppression method for mine excavation. The foam dust suppression system comprises a control device, a foam generating device and a foam sprinkling device. The foam generating device comprises a foam generator and a foaming agent liquid storage pot. The foam generator is respectively connected with a compressed air pipeline of a mine shaft, a clear water pipeline of the mine shaft and the foam sprinkling device. The control device is installed on the compressed air pipeline and the clear water pipeline and used for controlling opening and closing of the compressed air pipeline and the clear water pipeline. The foaming agent liquid storage pot is arranged on the clear water pipeline between the control device and the foam generator and is communicated with the clear water pipeline through a material sucking device. The foam dust suppression method comprises the steps of starting control, foam forming and foam sprinkling. The foam dust suppression system is small in volume, simple in operation, even in foam output and capable of working continuously, stably and reliably and being flexibly applied to a mine excavation working face or a transferring point and other narrow spaces.

Description

A kind of foam dust suppression system and foam dust suppression method that is used for mine excavation

Technical field

The present invention relates to the foam dust suppression system in a kind of dust prevention and control field, particularly a kind of foam dust suppression system and foam dust suppression method that is applicable to the improvement of narrow and small place, space dust disasters such as mine excavation work plane, transfer point and tunnel.

Background technology

In the mining process, can produce a large amount of dust, and digging operation is the master operation of producing dirt, its dust-producing amount accounts for more than 80% of total dust, serious harm workman's physical and mental health and safety and production.With the colliery industry is example, and according to the incomplete statistics of the Ministry of Public Health, present national colliery pneumoconiosis patient is 350,000 people nearly, and the pneumoconiosis recall rate is up to 7.2%, and with the speed increase of annual 10000 many cases, annual nearly 3000 people die from pneumoconiosis.Dust not only causes connecing the dirt workman and suffers from pneumoconiosis, but also can cause the generation of particularly serious pernicious explosion accident, and according to incompletely statistics, the accident of the especially big coal-dust explosion of whole nation generation since two thousand has 15, causes people more than 960 dead.Bring great misery for miner and family thereof, caused tremendous loss also for enterprise and country, also the stable of society caused ill effect with harmonious development simultaneously.In order to prevent and treat dust; At present under the coal mine extensive use technology such as coal-bed flooding, atomizing de-dusting, deduster dedusting, dust removal by ventilation, chemical dust suppression; Though these dedusting technologies are to improving working environment at coal mines, protect workers ' health and preventing the important function that played of mine dust accident; But these technological efficiency of dust collections are low, cause the mine dust disaster also very serious in China.

Just begun the research work of foam dust suppression the seventies in last century abroad, but dust-suppression method mainly is to be installed in foam-generating device to produce near the dirt pits, relies on a large amount of foams with distinguished and admirable motion covering dirt source, like the Makeni of the former Soviet Union.This method exists influences workman's sight line and the shortcoming that can not directed catch two aspects of dirt, therefore can not control effectively the main product dirt root of the digging operation under the coal mine.Because above two aspects and other, the foam dust suppression technology is not used widely under the coal mine yet at home.Application number is 87106798; The Chinese invention patent that name is called " rock drilling bubble dust collector and foam dedusting agent " applies for 1988 and discloses a kind of rock drilling bubble dust collector; It mainly is made up of foaming premixed liquid holding vessel, compressed air line and froth nozzle; Though this device is better dust removal effect when the rock drilling bore operation, it can not realize continuous operation, is not suitable for the dedusting of working continuously of getting working face.Application number is 200810023578; Name is called the Chinese invention patent application of " a kind of foam dedusting system that is used under the coal mine "; A kind of foam dedusting system that is used under the coal mine is disclosed; Adopt the compressed air-driven low discharge quantitatively to add pump and be added into blowing agent in the water pipe, on foam maker, add source of the gas, mix post-foaming.A kind of foam dust-removing device that U.S. Deter company announces; The same air operated pump that adopts is extracted into water and blowing agent in the pipeline; Then with compressor in the high-speed air that produces in mixer, realize mixing by force, deliver to the wire lath place foaming of foam device again.The patent No. is " ZL200920092287 "; The Chinese utility model patent that name is called " foam dust suppression device " discloses a kind of foam dust suppression device; Its principle is earlier compressed air to be shunted; Utilize compressed-air actuated malleation that the blowing agent of fluid reservoir is pressed into pipeline, last blowing agent, water under high pressure and compressed air mixed foaming in foam maker.The common ground of these three kinds of foam dust-removing devices all is to adopt compressed air as power blowing agent to be added in the pipeline.Avoided electric unsafe factor though adopt compressed air-driven; But the preparation of foam also need be used compressed air in the dust pelletizing system; Compressed air must be divided into two-way in same system, one tunnel driving force as the blowing agent interpolation, and another road is as the source of the gas of foam preparation.The compressed-air actuated pipe resistance of this two-way is different, will cause two-way gas skewness weighing apparatus, is difficult to control, has increased the complexity of system and has reduced its safety and reliability.In addition, above-mentioned dust arrester can not realize that the automatic ratio of foaming agent solution adds, and regulates complicated operation during use, and compressed-air actuated in addition kinetic energy is limited and receive the down-hole influence factor more, finally causes system to be difficult to the reliable and stable operation.

Summary of the invention

Technical problem to be solved by this invention provide a kind of volume little, simple to operate, can the continous-stable reliably working, foam output evenly, can flexible Application in the foam dust suppression system and the foam dust suppression method of small spaces such as mine excavation work plane or transfer point.

To achieve these goals; The invention provides a kind of foam dust suppression system that is used for mining; Comprise control device, foam-making apparatus and foam unit; Wherein, Said foam-making apparatus comprises foam maker and blowing agent fluid reservoir, and said foam maker is connected with compressed air line, clear water pipeline and the said foam unit of mine respectively, and said control device is installed on said compressed air line and the said clear water pipeline; Be used to control the switching of said compressed air line and clear water pipeline, said blowing agent fluid reservoir is arranged on the clear water pipeline between said control device and the said foam maker also through suction device and said clear water pipeline connection.

Above-mentioned foam dust suppression system; Wherein, said suction device comprises material sucking valve and suction tube, and said material sucking valve is installed on the said clear water pipeline; One end of said suction tube stretches into the bottom of said blowing agent fluid reservoir, and said material sucking valve is connected with the other end of said suction tube through the suction pipeline.

Above-mentioned foam dust suppression system wherein, also is provided with one way valve on the said suction pipeline, is used for preventing the said blowing agent fluid reservoir of current direction of said material sucking valve.

Above-mentioned foam dust suppression system; Wherein, said suction device also comprises blowing agent proportional control mechanism, and said blowing agent proportional control mechanism comprises the bypass line parallelly connected with said material sucking valve, first reset valve and second reset valve; Said first reset valve is installed on the said bypass line; Be used to control the flow through water yield of said material sucking valve and said bypass line and distribute, said second reset valve is installed on the said suction pipeline, is used to control the flow of said suction tube.

Above-mentioned foam dust suppression system, wherein, said foam-making apparatus also comprises strainer, said strainer is installed on the said clear water pipeline and is arranged between said suction device and the said control device.

Above-mentioned foam dust suppression system; Wherein, Said foam maker comprises interconnected foaming section and mixer, and said foaming section comprises foaming piece housing and the foaming mechanism that is arranged in the said foaming piece housing, and said foaming mechanism comprises support and is installed in Venturi tube and the flow spoiler on the said support; Said flow spoiler is installed in the diffuser of said Venturi tube; Said Venturi tube is installed in the entrance of said foaming piece housing, also is provided with compressed air inlet on the said foaming piece housing, the corresponding said flow spoiler setting of said compressed air inlet.

Above-mentioned foam dust suppression system; Wherein, said support comprises bolt support and bolt, and said bolt support is installed in the arrival end of said Venturi tube; The top of said bolt is installed on the said bolt support; Said flow spoiler is installed in the end of said bolt, and the end of said bolt also is equipped with adjusting nut, and the relative position that is used to adjust said flow spoiler and said Venturi tube is with the planar water curtain of controlled water flow formation hollow cone.

Above-mentioned foam dust suppression system, wherein, said foaming section comprises that also foam screen, said foam screen are spiral net, and said spiral net correspondence is arranged on the rear portion of said flow spoiler, and said compressed air inlet is arranged between said spiral net and the said flow spoiler.

Above-mentioned foam dust suppression system; Wherein, Said mixer comprises mixer housing and the thorn wheel that is installed in the said mixer housing; Said thorn wheel is installed in the said mixer housing through the thorn wheel support, and said mixer housing is connected through a threaded joint with said foaming piece housing, said thorn wheel and said spiral net, said Venturi tube and the coaxial setting of said flow spoiler.

Above-mentioned foam dust suppression system, wherein, said foam unit comprises foam dispenser and a plurality of shower nozzle, and said shower nozzle is installed on the head cartridge, and said head cartridge is connected with said foam dispenser through pipeline.

Above-mentioned foam dust suppression system; Wherein, Said foam dispenser comprises surge tank, an import and a plurality of outlet, said import through elbow be connected said surge tank directly over, said a plurality of outlets are separately positioned on the side of said surge tank and are oppositely arranged with said import.

Above-mentioned foam dust suppression system, wherein, said control device is that the geomantic omen is valve core composed, said geomantic omen is valve core composed to be connected with the clear water pipeline with said compressed air line respectively, is used for controlling simultaneously the switching of said compressed air line and clear water pipeline.

In order to realize above-mentioned purpose better, the present invention also provides a kind of foam dust suppression method, wherein, comprises the steps:

A, start-up control step; Open the compressed air line and the clear water pipeline of mine simultaneously; Make compressed air get into foam maker; Current get into the suction device and make the suction device produce negative pressure, under suction function, from the blowing agent fluid reservoir, extract blowing agent out and be drawn into the uniform expanding foam solution of formation in the pipeline according to fixed proportion;

B, foam form step, and said expanding foam solution gets into said foam maker, and with said compressed air in said foam maker internal mix, produce significant foam;

C, foam spray step, and said foam is delivered to foam unit by the road, are sprayed to the dirt source by the shower nozzle of said foam unit and carry out dust suppression.

Technique effect of the present invention is:

1, foam dust falling system of the present invention is best suited for the improvement of place dust disasters such as mine excavation work plane, travelling belt transfer point and tunnel piercing.Parts of the present invention can be installed separately, and are flexible, simple to operate; Be applicable to the different location; Head cartridge wherein or foam nozzle can be directly installed on the mining machinery in mine or near the transfer point, the foam of ejection directly covers the product dirt pits, and depositing dust efficient reaches more than 80%;

2, the present invention utilizes existing water pipe in down-hole and compressed air line, produces negative pressure by current, under the adjusting of valve, sucks the blowing agent of proper proportion; Under the compressed air effect, foam in the foam maker in native system again, be transported to head cartridge, be fan-shaped ejection to significant foam by foam nozzle through foam dispenser; Cover and produce dirt pits; The foam of ejection evenly disperses, and can not cause foam to pile up, and does not influence workman's operation;

3 link to each other with the down-hole water pipe, and blowing agent adds immediately, and liquid is added in the preparation of need not stopping over, and can realize working continuously;

4, adopting with current is power, through behind the material sucking valve, produces negative pressure, proportionally in water pipe, adds blowing agent automatically, has simplified the operation of system, has increased stability;

5, produce behind the foam by foam dispenser uniform distribution foam to head cartridge or place to use, the foam dispenser in the native system has avoided foam in the shunting process, to break, and has also guaranteed the foam distributed uniform.

Describe the present invention below in conjunction with accompanying drawing and specific embodiment, but not as to qualification of the present invention.

Description of drawings

Fig. 1 is the foam dust suppression system architecture sketch map of one embodiment of the invention;

Fig. 2 is the structural representation of the foam maker of one embodiment of the invention;

Fig. 3 is the foam dispenser structural representation of one embodiment of the invention;

Fig. 4 is the foam dust suppression method flow diagram of one embodiment of the invention.

Wherein, Reference numeral

1 control device

2 foam-making apparatuses

21 foam makers

211 foaming sections

2111 foaming piece housings

21111 compressed air inlet

2112 foaming mechanisms

21121 supports

211211 bolt supports

211212 bolts

211213 adjusting nuts

21122 Venturi tubes

21123 flow spoilers

2113 foam screens

212 mixers

2121 mixer housings

2122 thorn wheels

2123 thorn wheel supports

213 threaded joints

214 foam outlets

22 blowing agent fluid reservoirs

221 suction devices

2211 material sucking valves

2212 suction tubes

2213 suction pipelines

22131 one way valves

2214 blowing agent proportional control mechanisms

22141 bypass lines

22,142 first reset valves

22,143 second reset valves

222 charge doors

23 strainers

3 foam units

31 foam dispensers

311 surge tanks

312 imports

313 outlets

314 elbows

315 magnet-fixation grooves

32 shower nozzles

33 head cartridges

34 pipelines

4 compressed air lines

5 clear water pipelines

A~c step

The specific embodiment

Below in conjunction with accompanying drawing structural principle of the present invention and operating principle are done concrete description:

Referring to Fig. 1, Fig. 1 is the structural representation of one embodiment of the invention.Foam dust suppression of the present invention system; Be used for mine excavation; Comprise control device 1, foam-making apparatus 2 and foam unit 3; Said foam-making apparatus 2 comprises foam maker 21 and blowing agent fluid reservoir 22; Said foam maker 21 is connected with compressed air line 4, clear water pipeline 5 and the said foam unit 3 of mine respectively; Said control device 1 is installed on said compressed air line 4 and the said clear water pipeline 5, is used to control the switching of said compressed air line 4 and clear water pipeline 5, and said blowing agent fluid reservoir 22 is arranged on the clear water pipeline 5 between said control device 1 and the said foam maker 21 and also is communicated with said clear water pipeline 5 through suction device 221.These parts can be installed separately according to field condition during application, and the middle diameter that preferably uses connects as the high-pressure rubber pipe of 19mm.In the present embodiment, it is valve core composed that said control device 1 is preferably the geomantic omen, and said geomantic omen is valve core composed to be connected with clear water pipeline 5 with said compressed air line 4 respectively, is used for controlling simultaneously the switching of said compressed air line 4 and clear water pipeline 5.Certainly, also can select in the prior art other by-pass valve control or control system for use, as long as can realize that the purpose that plays this foam dust suppression system of opening and closing gets final product, and this is not done special restriction to the open and close controlling of compressed air line 4 and clear water pipeline 5.

Referring to Fig. 2, Fig. 2 is the structural representation of the foam maker of one embodiment of the invention.Foam maker 21 links to each other with clear water pipeline 5 with compressed air line 4 simultaneously, and the foam outlet of foam maker 21 links to each other with the import of foam dispenser 31.Said foam maker 21 comprises interconnected foaming section 211 and mixer 212; Said foaming section 211 comprises foaming piece housing 2111 and the foaming mechanism 2112 that is arranged in the said foaming piece housing 2111; Said foaming mechanism 2112 comprises support 21121 and is installed in Venturi tube 21122 and the flow spoiler 21123 on the said support 21121; Said flow spoiler 21123 is installed in the diffuser of said Venturi tube 21122; Said Venturi tube 21122 is installed in the entrance of said foaming piece housing 2111; The diameter of this entrance is preferably 25mm, also is provided with compressed air inlet 21111 on the said foaming piece housing 2111, and said compressed air inlet 21111 corresponding said flow spoilers 21123 are provided with.In the present embodiment; Said support 21121 comprises bolt support 211211 and bolt 211212; Said bolt support 211211 is installed in the arrival end of said Venturi tube 21122; The top of said bolt 211212 is installed on the said bolt support 211211; Said flow spoiler 21123 is installed in the end of said bolt 211212, and the end of said bolt 211212 also is equipped with adjusting nut 211213, and the relative position that is used to adjust said flow spoiler 21123 and said Venturi tube 21122 is with the planar water curtain of controlled water flow formation hollow cone.Present embodiment can be provided with at the middle part of flow spoiler 21,123 one can with bolt 211212 close-fitting screwed holes, bolt 211212 passes from screwed hole, adjusting nut 211213 is installed in the rear portion that is positioned at flow spoiler 21123 on the bolt 211212.In the present embodiment; For foaming effect better, said foaming section 211 also comprises foam screen 2113, and said foam screen 2113 is a spiral net; Its foam screen 2113 for adopting helical structure to process; Help increasing the contact area of gas-liquid, said spiral net correspondence is arranged on the rear portion of said flow spoiler 21123, and said compressed air inlet 21111 is arranged between said spiral net and the said flow spoiler 21123.Spiral net links to each other with thorn wheel 2122 through thorn wheel support 2123; Be fixed on the mixer housing 2121; Thorn wheel 2122 is to be intersected to be welded on the axle with a determining deviation by some blades to be made, and mixer housing 2121 links to each other with foaming piece housing 2111 through threaded joint 213.

Said mixer 212 comprises mixer housing 2121 and the thorn wheel 2122 that is installed in the said mixer housing 2121; Said thorn wheel 2122 is installed in the said mixer housing 2121 through thorn wheel support 2123; Said mixer housing 2121 is connected through a threaded joint 213 with said foaming piece housing 2111, said thorn wheel 2122 and said spiral net, said Venturi tube 21122 and the 21123 coaxial settings of said flow spoiler.

In the present embodiment; Said suction device 221 comprises material sucking valve 2211 and suction tube 2212; Said material sucking valve 2211 is installed on the main line of said clear water pipeline 5, and an end of said suction tube 2212 stretches into the bottom of said blowing agent fluid reservoir 22, and blowing agent fluid reservoir 22 is provided with charge door 222.Said material sucking valve 2211 is connected through the other end of suction pipeline 2213 with said suction tube 2212.Also be provided with one way valve 22131 on the said suction pipeline 2213, be used for preventing the said blowing agent fluid reservoir 22 of current direction of said material sucking valve 2211.In the present embodiment; Said suction device 221 also comprises blowing agent proportional control mechanism 2214; Said blowing agent proportional control mechanism 2214 comprises bypass line 22141, first reset valve 22142 and second reset valve 22143 parallelly connected with said material sucking valve 2211; Said first reset valve 22142 is installed on the said bypass line 22141; Be used to control the flow through water yield of said material sucking valve 2211 and said bypass line 22141 and distribute, said second reset valve 22143 is installed on the said suction tube 2212 tunnel, is used to control the flow of said suction tube 2212.Its operating principle is; Control the distribution of the flow through material sucking valve 2211 and bypass line 22141 water yields through the aperture of regulating first reset valve 22142; Thereby the vacuum in the control material sucking valve 2211, the suction ratio of change material sucking valve 2211, the aperture of regulating second reset valve 22143 simultaneously; The flow of control suction tube 2212 is finally controlled the suitable adding proportion of blowing agent.Utilize the power of current,, from blowing agent fluid reservoir 22, suck blowing agent in the clear water pipeline 5 automatically according to the ratio that configures in the material sucking valve 2211 inner negative pressure that produce.

Said foam-making apparatus 2 also can comprise strainer 23, and said strainer 23 is installed on the said clear water pipeline 5 and is arranged on said suction device 221 the place aheads, and the best is arranged between said suction device 221 and the said control device 1.

Referring to Fig. 3, Fig. 3 is the foam dispenser structural representation of one embodiment of the invention.Said foam unit 3 comprises foam dispenser 31 and a plurality of shower nozzles 32, and said shower nozzle 32 is installed on the head cartridge 33, and said head cartridge 33 is connected with said foam dispenser 31 through pipeline 34.Said foam dispenser 31 comprises surge tank 311, an import 312 and an a plurality of outlet 313; Said import 312 through elbow 314 be connected said surge tank 311 directly over, said a plurality of outlets 313 are separately positioned on the side of said surge tank 311 and are oppositely arranged with said import 312.The side that is welded on surge tank 311 of 315, two magnet-fixation grooves of magnet-fixation grooves, 315 symmetries can also be set, so that utilize magnet fixed foam distributor 31 on the tank body of this foam dispenser 31.Wherein the internal diameter of import 312 is preferably 50mm, and weld diameter is the quick connector of 25mm in three outlets 313.

Foam dust suppression of the present invention system can be through the following steps setting: step 1, foam-making apparatus 2 is set; Said foam-making apparatus 2 comprises foam maker 21 and blowing agent fluid reservoir 22; Said foam maker 21 is connected with compressed air line 4, the clear water pipeline 5 of mine through pipeline respectively; Said blowing agent fluid reservoir 22 is arranged on the clear water pipeline 5 of said foam maker 21 front ends and is communicated with said clear water pipeline 5 through suction device 221, and the structure of said suction device 221 can be referring to Fig. 1 and above stated specification;

Step 2, foam unit 3 is set, said foam unit 3 is arranged near the product dirt pits of mine and through pipeline and is connected with said foam maker 21.The structure of said foam unit 3 can be referring to Fig. 3 and explanation thereof;

Step 3, control device 1 is set, said control device 1 is installed on said compressed air line 4 and the said clear water pipeline 5, and the place ahead that is positioned at said foam-making apparatus 2 is provided with, and is used to control the switching of said compressed air line 4 and clear water pipeline 5.In the present embodiment, it is valve core composed that this control device 1 is preferably the geomantic omen, and said geomantic omen is valve core composed to be connected with clear water pipeline 5 with said compressed air line 4 respectively, is used for controlling simultaneously the switching of said compressed air line 4 and clear water pipeline 5.

Referring to Fig. 4, Fig. 4 is the foam dust suppression method flow diagram of one embodiment of the invention.Foam dust suppression method of the present invention adopts above-mentioned foam dust suppression system, comprises the steps:

Start-up control step a; Open the compressed air line 4 and clear water pipeline 5 of mine simultaneously through control device 1; Make compressed air get into foam maker 21; Current get into suction device 221 and make suction device 221 produce negative pressure, under suction function, from blowing agent fluid reservoir 22, extract blowing agent out and be drawn into the uniform expanding foam solution of formation in the pipeline according to fixed proportion;

Foam forms step b, and said expanding foam solution gets into said foam maker 21, and with said compressed air in said foam maker 21 internal mix, produce significant foam;

Foam sprays step c, and said foam is delivered to foam unit 3 by the road, is sprayed to the dirt source by the shower nozzle 32 of said foam unit 3 and carries out dust suppression.

Wherein, start-up control step a can comprise that also blowing agent proportional control regulating step a1 is to regulate the suitable adding proportion of control blowing agent.In the present embodiment; Can control the distribution of the flow through material sucking valve 2211 and bypass line 22141 water yields through the aperture of regulating first reset valve 22142; Thereby the vacuum in the control material sucking valve 2211, the suction ratio of change material sucking valve 2211, the aperture of regulating second reset valve 22143 simultaneously; The flow of control suction tube 2212 is finally controlled the suitable adding proportion of blowing agent.

Foam dust suppression method of the present invention before foam forms step b, can comprise that also clear water filtration step b0 is to filter the water that gets into suction device 221.Can strainer 23 be set in suction device 221 the place aheads, clear water filters the impurity in the water through the valve core composed entering strainer 23 in geomantic omen through strainer 23; Current are divided into two-way then; One the tunnel gets into bypass line 22141, and another road enters into material sucking valve 2211, under the effect of current; Produce negative pressure by material sucking valve 2211, blowing agent is extracted out from blowing agent fluid reservoir 22.

During work, compressed air line 4 links to each other with the clear water pipe with the pressure ventilation pipe of site of deployment respectively with clear water pipeline 5, and compressed air is valve core composed through the geomantic omen; Get into foam maker 21, clear water filters the impurity in the water through the valve core composed entering strainer 23 in geomantic omen through strainer 23 in addition; Current are divided into two-way then, and one the tunnel gets into bypass line 22141, and another road enters into material sucking valve 2211; Under the effect of current, produce negative pressure by material sucking valve 2211, under suction function, from blowing agent fluid reservoir 22, extract blowing agent out; Enter into material sucking valve 2211 through one way valve 22131, second reset valve 22143; One way valve 22131 prevents the current direction blowing agent fluid reservoir 22 in the material sucking valve 2211, regulates the flow of blowing agent in second reset valve, the 22143 control suction tubes 2212, the distribution of the water yield in first reset valve, 22142 control material sucking valves 2211 and the bypass line 22141; Thereby the vacuum in the control material sucking valve 2211, the suction ratio of change material sucking valve 2211.During use, close first reset valve 22142 earlier, standard-sized sheet second reset valve 22143; Current are slowly opened first reset valve 22142 subsequently through material sucking valve 2211 beginning suctions, slowly close second reset valve 22143 simultaneously; When the ratio of suction amount and Total Water is moderate, stop to regulate.Blowing agent is inhaled into behind the material sucking valve 2211 within it according to the ratio that regulates that energy and mass exchange take place in portion, form uniform mixed liquor after, enter into foam maker 21 inside by the import of foam maker 21; When mixed liquor passed through the throat of Venturi tube 21122, the static pressure of current reduced, and ram compression raises; When current at a high speed pass through flow spoiler 21123, form the planar water curtain of hollow cone, increased the surface area of liquid; Compressed air enters into foam maker 21 inside by compressed air line 4 through compressed air inlet 21111, contacts with the planar water curtain of hollow cone and mixes, and the gas-liquid mixed stream of formation further mixes gas-liquid through helical form foam screen 2113; Form the part foam, the foam of generation continues to flow under the effect of air-flow with the foam solution that does not become bubble, through the upset effect of thorn wheel 2122; In foaming piece housing 2111, form turbulent flow; Gas-liquid is fully mixed, and finally forms uniform foam, flows out through foam outlet 214; Foam is preferably the sebific duct of 50mm through one section diameter, arrives in the foam dispenser 31.In foam dispenser 31, foam enters into surge tank 311 by distributor import 312 from top, forms turbulent flow in the inside of surge tank 311; Avoided lather collapse, because the outlet 313 of foam dispenser 31 is distributed in the side of surge tank 311, each exports 313 suffered pressure and equates; So foam can well-proportionedly be flowed out by outlet 313; Through pipeline 34 and head cartridge 33, be fan-shaped ejection by shower nozzle 32 at last, cover the dirt source.

Whole device of the present invention can be installed separately flexibly; Wherein parts such as valve on blowing agent fluid reservoir 22, material sucking valve 2211, compressed air line 4, clear water pipeline 5 and foam maker 21 and the pipeline and strainer 23 can be selected the infield according to actual conditions; Perhaps be installed separately flexibly, and foam dispenser 31 and foam nozzle 32 can be installed near the product dirt pits according to condition.For example when the application of driving face; Blowing agent fluid reservoir 22, suction tube 2212, foam maker 21 and pipeline fittings can be installed in the optional position in the tunnel, fully-mechanized digging machine rear portion; Foam dispenser 31, head cartridge 33 and foam nozzle 32 then are installed near the pick of development machine; Foam nozzle 32 is distributed in a left side, goes up, right three, foam is sprayed on all picks on the cutting-cylinder uniformly during work, covers to produce dirt pits.

The present invention utilizes dustproof regional existing pressure water pipe, and through the material sucking valve of in water pipe, installing, the jet that utilizes water flows to form produces negative pressure blowing agent is drawn in the water pipe; According to fixed proportion blowing agent directly is drawn into pipeline; Form uniform expanding foam solution, expanding foam solution and compressed air produce significant foam in the inner intense mixing of foam maker; Foam gets into high-voltage tube through distributor, is sprayed to the dirt source and carries out dust suppression by being installed in foam nozzle on the head cartridge.The present invention does not need extrinsic motives such as electricity or pressure wind; Have essential safety, easy to operate, simple in structure, volume is little, uniform characteristic is exported in light weight, stable and reliable operation, foam, is particularly useful for the control of narrow and small place, space dust disasters such as getting working face under the coal mine, travelling belt transfer point, set of tunneling construction.

Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.

Claims (10)

1. foam dust suppression system that is used for mine excavation; Comprise control device, foam-making apparatus and foam unit; It is characterized in that; Said foam-making apparatus comprises foam maker and blowing agent fluid reservoir, and said foam maker is connected with compressed air line, clear water pipeline and the said foam unit of mine respectively, and said control device is installed on said compressed air line and the said clear water pipeline; Be used to control the switching of said compressed air line and clear water pipeline, said blowing agent fluid reservoir is arranged on the clear water pipeline between said control device and the said foam maker also through suction device and said clear water pipeline connection.
2. foam dust suppression as claimed in claim 1 system; It is characterized in that; Said suction device comprises material sucking valve and suction tube; Said material sucking valve is installed on the said clear water pipeline, and an end of said suction tube stretches into the bottom of said blowing agent fluid reservoir, and said material sucking valve is connected with the other end of said suction tube through the suction pipeline.
3. foam dust suppression as claimed in claim 2 system; It is characterized in that; Said suction device also comprises blowing agent proportional control mechanism; Said blowing agent proportional control mechanism comprises the bypass line parallelly connected with said material sucking valve, first reset valve and second reset valve, and said first reset valve is installed on the said bypass line, is used to control the flow through water yield of said material sucking valve and said bypass line and distributes; Said second reset valve is installed on the said suction pipeline, is used to control the flow of said suction tube.
4. like claim 1,2 or 3 described foam dust suppression systems; It is characterized in that; Said foam maker comprises interconnected foaming section and mixer, and said foaming section comprises foaming piece housing and the foaming mechanism that is arranged in the said foaming piece housing, and said foaming mechanism comprises support and is installed in Venturi tube and the flow spoiler on the said support; Said flow spoiler is installed in the diffuser of said Venturi tube; Said Venturi tube is installed in the entrance of said foaming piece housing, also is provided with compressed air inlet on the said foaming piece housing, the corresponding said flow spoiler setting of said compressed air inlet.
5. foam dust suppression as claimed in claim 4 system; It is characterized in that said support comprises bolt support and bolt, said bolt support is installed in the arrival end of said Venturi tube; The top of said bolt is installed on the said bolt support; Said flow spoiler is installed in the end of said bolt, and the end of said bolt also is equipped with adjusting nut, and the relative position that is used to adjust said flow spoiler and said Venturi tube is with the planar water curtain of controlled water flow formation hollow cone.
6. like claim 4 or 5 described foam dust suppression systems; It is characterized in that said foaming section comprises that also foam screen, said foam screen are spiral net; Said spiral net correspondence is arranged on the rear portion of said flow spoiler, and said compressed air inlet is arranged between said spiral net and the said flow spoiler.
7. foam dust suppression as claimed in claim 6 system; It is characterized in that; Said mixer comprises mixer housing and the thorn wheel that is installed in the said mixer housing; Said thorn wheel is installed in the said mixer housing through the thorn wheel support, and said mixer housing is connected through a threaded joint with said foaming piece housing, said thorn wheel and said spiral net, said Venturi tube and the coaxial setting of said flow spoiler.
8. like claim 1,2,3,5 or 7 described foam dust suppression systems; It is characterized in that; Said foam unit comprises foam dispenser and a plurality of shower nozzle; Said shower nozzle is installed on the head cartridge, and said head cartridge is connected with said foam dispenser through pipeline, and said foam dispenser comprises surge tank, an import and a plurality of outlet; Said import through elbow be connected said surge tank directly over, said a plurality of outlets are separately positioned on the side of said surge tank and are oppositely arranged with said import.
9. foam dust suppression as claimed in claim 8 system; It is characterized in that; Said control device is that the geomantic omen is valve core composed, and said geomantic omen is valve core composed to be connected with the clear water pipeline with said compressed air line respectively, is used for controlling simultaneously the switching of said compressed air line and clear water pipeline.
10. the foam dust suppression method of employing such as claim 1,2,3,5,7 or 9 described foam dust suppression systems is characterized in that, comprises the steps:
A, start-up control step; Open the compressed air line and the clear water pipeline of mine simultaneously; Make compressed air get into foam maker; Current get into the suction device and make the suction device produce negative pressure, under suction function, from the blowing agent fluid reservoir, extract blowing agent out and be drawn into the uniform expanding foam solution of formation in the pipeline according to fixed proportion;
B, foam form step, and said expanding foam solution gets into said foam maker, and with said compressed air in said foam maker internal mix, produce significant foam;
C, foam spray step, and said foam is delivered to foam unit by the road, are sprayed to the dirt source by the shower nozzle of said foam unit and carry out dust suppression.
CN2011103927468A 2011-12-01 2011-12-01 Foam dust suppression system and foam dust suppression method for mine excavation CN102434187A (en)

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