CN102226411B

CN102226411B - Foam dust-settling device for negative pressure-type mines

Info

Publication number: CN102226411B
Application number: CN 201110150881
Authority: CN
Inventors: 王德明; 王和堂; 陆新晓; 任万兴; 高庆丛; 郭新安; 张义坤
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2011-06-07
Filing date: 2011-06-07
Publication date: 2013-12-25
Anticipated expiration: 2031-06-07
Also published as: CN102226411A

Abstract

The invention discloses a foam dust-settling device for negative pressure-type mines, mainly comprising a fluid reservoir, a wind and water pipeline, a wind and water linked switch, a proportioning mixer, a foam maker, a foam conveying pipe and a foam distributor and the like. The wind and water linked switch is adopted to control the generation and closing of dedusting foams; by utilizing an underground water inlet pipe with a pressure, and through the negative difference formed by a tunable little-capacity proportioning mixer arranged in the water inlet pipe, a foaming agent is absorbed into the water inlet pipe to automatically prepare into a uniform foaming liquid; the foaming liquid and the compressed air are fully mixed in the foam maker to generate a large amount of foams which enter a high-pressure rubber pipe through the distributor; and finally the foams are sprayed into a dust source and into dust-containing air by a foam sprayer for settling the dust. The device does not need a power source, has the characteristics of intrinsic safety, low energy consumption, convenience in operation, small volume and light weight, and is especially suitable for preventing and curing the dust disasters in the narrow spaces, such as underground extraction working surface in a coal mine, transportation point of a belt transportation machine and tunnel tunneling construction and the like.

Description

A kind of negative pressure mine foam dust laying device

Technical field

The present invention relates to a kind of negative pressure mine foam dust laying device, especially a kind of negative pressure mine foam dust laying device be applicable under coal mine.

Background technology

In order to prevent and treat dust, generally adopt the dust preventions such as atomizing de-dusting and coal-bed flooding under coal mine, but all because efficiency of dust collection is lower, can not contain well the dust disaster.The foam dust suppression technology has the remarkable advantages such as efficiency is high, water consumption is little, since proposing the 1950's, obtained larger development, at home and abroad some mining areas have obtained the test application, but the defect due to foam dust laying device, make development and the application of foam dust suppression technology be subject to serious restriction, for many years stagnation.

It is a kind of for the foam dedusting system under coal mine that the patent No. is that ZL200810023578.3 discloses, and adopts quantitatively to add pump blowing agent is added in water inlet pipe, then adds source of the gas, through foam maker mixing post-foaming.A kind of foam dust-removing device that U.S. Deter company also announces, at first utilize pump to be extracted in pipeline water, blowing agent, then with the high-speed air produced in compressor, in mixer, realizes mixing by force, then deliver to the wire lath place foaming of foam device.But these two kinds of foam devices are all to adopt kinetic pump that blowing agent is added in pipeline, and the latter also must foam by means of grid, has not only increased the complexity of system, and reduced the safety and reliability of device.

Patent announcement number discloses a kind of rock drilling bubble dust collector for CN87106798A, mainly contain the compositions such as fluid reservoir, compressed air inlet port, integrated package, froth nozzle, bubble jet mouth, its foam theory is first mixed water and blowing agent in fluid reservoir, then utilize integrated package that compressed air is shunted, utilize malleation that foaming liquid is pressed into to pipeline, foamed by froth nozzle; The patent No. is that ZL200920092287 discloses a kind of foam dust inhibitor, its foam theory is also first compressed air to be shunted, utilize compressed-air actuated malleation that the blowing agent of fluid reservoir is pressed into to pipeline, last blowing agent, water under high pressure and compressed air mixed foaming in foam maker.Both need to prepare in advance the aqueous solution containing blowing agent in fluid reservoir, then utilize to calm the anger the foaming agent solution in fluid reservoir is extruded, but said apparatus all can not be realized the automatic configuration of foaming agent solution, therefore increased labour intensity, the kinetic energy of in addition calming the anger is limited, and be subject to the impact of subsurface environment many factors, be difficult to reliable and stable operation.

Summary of the invention

Technical problem: the objective of the invention is to overcome the weak point in prior art, a kind of essential safety is provided, easy to operate, dependable performance, the high-performance foam device for reducing dust that depositing dust efficiency is high.

Technical scheme: negative pressure mine foam dust laying device of the present invention, comprise foam maker, also comprise the blowing agent fluid reservoir that is provided with filling opening, described foam maker is fixed on the sidewall of blowing agent fluid reservoir, be connected with respectively the blast pipe be fixed on blowing agent fluid reservoir outer wall on foam maker, water inlet pipe and foam pipeline, be provided with successively flap valve on water inlet pipe, adjustable low discharge proportioner and water control valve, blast pipe is provided with volume control damper, water inlet pipe and blast pipe are fixing side by side, fixing water inlet pipe and blast pipe entrance are provided with wind power ganged switch side by side, described adjustable low discharge proportioner comprises that an end is connected with water inlet pipe, the other end inserts the pipette of blowing agent fluid reservoir bottom, pipette is provided with one way valve, before and after pipette, the water inlet pipe of both sides is provided with bypass pipe, bypass pipe is provided with control valve.

Described water control valve rear portion is provided with strainer; The entrance of described water inlet pipe and blast pipe is provided with the quick inserting joint; The exit of described foam pipeline is provided with foam dispenser.

Beneficial effect: adopt wind power ganged switch control the generation of dedusting foam and close, utilize the water pipe of compressing into of down-hole, the Negative Pressure Difference formed by the adjustable low discharge proportioner of installing in water inlet pipe, blowing agent is sucked in water inlet pipe, form uniform expanding foam solution, expanding foam solution fully mixes in foam maker with compressed air, produces a large amount of foams, foam enters high-pressure rubber pipe through distributor, by foam nozzle, is sprayed to the dirt source and dust laden air carries out depositing dust.Be particularly useful for the control of the narrow space place dust disasters such as getting working face under coal mine, travelling belt transfer point, tunnel, depositing dust efficiency is high, applicability is strong, this device is without power supply, essential safety, energy consumption is low, volume is little, lightweight, easy to operate while using in down-hole, be particularly useful for the control of the narrow space place dust disasters such as getting working face and transfer point.Need not be pre-mixed, package unit does not need additionaling power, simple in structure, volume is little, stable and reliable operation, convenient to operation.

The accompanying drawing explanation

Fig. 1 is right stravismus structural representation of the present invention.

Fig. 2 is left stravismus structural representation of the present invention.

In figure: 1-quick inserting joint; The wind power ganged switch of 2-; 3-blowing agent fluid reservoir; The 4-blast pipe; The 5-water inlet pipe; The 6-water control valve; The 7-strainer; The 8-bypass pipe; The 9-volume control damper; The 10-one way valve; The 11-pipette; The 12-filling opening; The 13-flap valve; The 14-foam maker; The 15-foam pipeline; The 16-foam dispenser.

The specific embodiment

Below in conjunction with accompanying drawing, embodiments of the invention are further described:

Negative pressure mine foam dust laying device of the present invention, mainly by blowing agent fluid reservoir 3, blast pipe 4, water inlet pipe 5, foam maker 14 and foam pipeline on three sides that are fixed on blowing agent fluid reservoir 3, formed, wherein foam maker 14 is fixed on the front side wall of blowing agent fluid reservoir 3, be fastened on respectively blast pipe 4, water inlet pipe 5 and foam pipeline 15 on blowing agent fluid reservoir 3 outer walls on foam maker 14, the entrance of water inlet pipe 5 and blast pipe 4 is located at quick inserting joint 1; The exit of foam pipeline 15 is provided with foam dispenser 16, and foam dispenser 16 forms for three the quick inserting joints 1 that are hexagonal angle.Be provided with successively flap valve 13, adjustable low discharge proportioner and water control valve 6 on water inlet pipe 5, the rear portion of water control valve 6 is provided with strainer 7.Blast pipe 4 is provided with volume control damper 9, water inlet pipe 5 and blast pipe 4 are fixing side by side, fixing water inlet pipe 5 and blast pipe 4 entrance pipes are provided with wind power ganged switch 2 side by side, wind power ganged switch 2 is by two ball valves that are located at respectively on blast pipe 4 and water inlet pipe 5, the handle that connects the connecting rod of two ball valves and be located on connecting rod forms, can control two Spool rotatings of water inlet pipe 5 and blast pipe 4 by the handle of wind power ganged switch 2, the function of two ball valves of water inlet pipe 5 and blast pipe 4 is opened simultaneously or is closed in realization, thereby reach the purpose that wind and water are controlled simultaneously.Described adjustable low discharge proportioner mainly consists of pipette 11 and bypass pipe 8, pipette 11 1 ends are connected with water inlet pipe 5, the other end inserts blowing agent fluid reservoir 3 bottom inlets and is connected, pipette 11 is provided with one way valve 10, bypass pipe 8 also is connected on the water inlet pipe 5 of pipette 11 both sides, front and back, and bypass pipe 8 is provided with control valve.The large I of blowing agent fluid reservoir 3 is definite according to the down-hole actual conditions, can adopt the high 250～350mm of being, wide is 400～600mm, and length is 500～700mm, and the Plate Welding that is 5mm with thickness forms.Blowing agent fluid reservoir 3 is provided with filling opening 12, and bottom is provided with the liquid outlet be connected with pipette 11.

Operating principle: after wind power ganged switch 2 is opened, the pressure water in pipeline enters into adjustable low discharge proportioner through control valve 6, strainer 7.The negative pressure that proportioner utilizes ingoing stream section's motion within it to produce sucks the blowing agent in pipette 11 in water inlet pipe 5 automatically, blowing agent with water after proportioner mixes, form uniform expanding foam solution and enter foam maker 14, the compressed air that expanding foam solution is introduced with blast pipe 4 in foam maker 14 meets and forms strong gas-liquid turbulent flow, and then form uniform foam, foam enters into foam dispenser 16 through foam pipeline 15 again, in foam dispenser 16, foam can be realized uniform distribution, foam dispenser 16 connects high-pressure rubber pipe by three the quick inserting joints 1 that are separately hexagonal angle, foam is assigned to and produces the dirt place, through foam nozzle, spray, carry out efficient depositing dust.

Claims

1. a negative pressure mine foam dust laying device, comprise foam maker (14), it is characterized in that: also comprise that top is provided with the blowing agent fluid reservoir (3) of filling opening (12), described foam maker (14) is fixed on the sidewall of blowing agent fluid reservoir (3), be connected with respectively the blast pipe (4) be fixed on blowing agent fluid reservoir (3) outer wall on foam maker (14), water inlet pipe (5) and foam pipeline (15), be provided with successively flap valve (13) on water inlet pipe (5), adjustable low discharge proportioner and water control valve (6), blast pipe (4) is provided with volume control damper (9), water inlet pipe (5) and blast pipe (4) are fixing side by side, fixing water inlet pipe (5) and blast pipe (4) entrance are provided with wind power ganged switch (2) side by side, described adjustable low discharge proportioner comprises that an end is connected with water inlet pipe (5), the other end inserts the pipette (11) of blowing agent fluid reservoir (3) bottom, pipette (11) is provided with one way valve (10), before and after pipette (11), the water inlet pipe (5) of both sides is provided with bypass pipe (8), bypass pipe (8) is provided with control valve, described wind power ganged switch (2) by being located at respectively blast pipe (4) and two ball valves on water inlet pipe (5), be connected the connecting rod of two ball valves and the handle that is located on connecting rod forms, described water control valve (6) rear portion is provided with strainer (7), the exit of foam pipeline (15) is provided with foam dispenser (16), foam dispenser (16) forms for three the quick inserting joints (1) that are hexagonal angle, and foam dispenser (16) connects high-pressure rubber pipe by three the quick inserting joints (1) that are separately hexagonal angle.