CN204082202U - foam dust-removing device - Google Patents
foam dust-removing device Download PDFInfo
- Publication number
- CN204082202U CN204082202U CN201420419876.5U CN201420419876U CN204082202U CN 204082202 U CN204082202 U CN 204082202U CN 201420419876 U CN201420419876 U CN 201420419876U CN 204082202 U CN204082202 U CN 204082202U
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- Prior art keywords
- foam
- jet
- import
- nozzle
- flow proportioning
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Abstract
The utility model discloses a kind of foam dust-removing device, comprise jet-flow proportioning mixing arrangement and foam device; Jet-flow proportioning mixing arrangement comprises jet-flow proportioning device, press water import and blowing agent import; Jet-flow proportioning device comprises jet-flow proportioning device delivery outlet, nozzle and is arranged on the imbibition room of nozzle periphery; Press water import is communicated with the nozzle of jet-flow proportioning device, and blowing agent import is communicated with imbibition room, and foam device comprises foaming chamber, and foaming chamber is provided with inlet, pressed gas import and foam outlet; Pressed gas import and foam outlet are oppositely arranged; Be provided with spiral nozzle and foam screen in foaming chamber, spiral nozzle is communicated with described inlet, is arranged on the path between pressed gas import and foam outlet; Foam screen is arranged between spiral nozzle and foam outlet; Pressed gas is nitrogen or air; Jet-flow proportioning device delivery outlet is communicated with inlet.The utility model can utilize pressure air as transmitting power, foams, and foam is transported to dirt source position.
Description
Technical field
The utility model belongs to comprehensive pick face and work plane dedusting technology field, relates to a kind of foam dust-removing device.
Background technology
Coal dust is one of large disaster in colliery five, and " safety regulations in coal mine " middle clear stipulaties is respectively exploited mine and must be accomplished " one through three prevention ".Since entering the nineties, along with the fast development of experimentation, the extensive use of especially highly efficient and productive work plane, cause the dust concentration of fully mechanized workface to remain high, the thing followed is coal-dust explosion.In China's coal-mine production history, there is coal-dust explosion casualty accident many times in the past, caused heavy economic losses.Mine dust is the subparticle of ore and the rock produced in mining production process.Coal dust is the one of mine dust, and the dust concentration combining pick face generally can reach 1000 ~ 3000mg/m
3, explosive index of coal dust, between 36.28% ~ 46.85%, has very strong explosivity, reaches 45 ~ 2000g/m when having volatile Dust Concentration
3, can blast when meeting 700 ~ 800 DEG C of high temperature burning things which may cause a fire disaster, and produce a large amount of toxic and harmfuls (as CO), even can also cause gas explosion and mine fire, mine dust also can make the worker of Long Term Contact mine dust suffer from pneumoconiosis in addition.
According to the relevant policies requirement of country to coal mine operation environment, the control of the just comprehensive conducting shaft dust of national each coal mining enterprise, to guarantee the safety in production of enterprise and to improve economy, society, environment, safety benefit.But the treating flour dust technology adopted at present comprises wind, water, close, clean and 5 aspects such as to protect, and based on wind, water.Wind is exactly dust removal by ventilation; Water is exactly wet operation; Close refer to airtight take out heavy; Only be that purification is distinguished and admirable; Protect is take individual protection measure.Wet operation comprises coal-bed flooding, external spraying in coal machine, spraying and transfer point spraying etc. between frame, and its mechanism of reducing dust by spray in conjunction with floating aerial dust particle, makes its gravity increase and Accelerated subsidence nothing more than water smoke.Its dust reduction rate can only reach about 60%, lower to the dust-laying effect of respirable dust, only reaches the dust reduction rate of 28%, and its reason is because coal, rock dust have hydrophobicity to a certain degree.The traditional dust suppression of general Coal Exploitation does not reach desirable effect, and its dust concentration is higher than state specified standards 10mg/m
3.
Utility model content
The utility model provides a kind of foam dust-removing device, and it is in conjunction with mine practical application condition, utilizes the mechanism such as foam is wetting to coal dust, interception, adhesion, sedimentation, plays good eliminating effect to the coal dust in comprehensive pick face.Thinking of the present utility model is: blowing agent and dust suppressant are carried out a certain proportion of mixing by jet-flow proportioning device with water, by foam device, utilizes pressure air as transmitting power, foams, and foam is transported to dirt source position.
Technical solution of the present utility model is as follows:
Foam dust-removing device, its special character is: comprise jet-flow proportioning mixing arrangement and foam device;
Jet-flow proportioning mixing arrangement comprises jet-flow proportioning device, press water import and blowing agent import; Wherein, jet-flow proportioning device comprises jet-flow proportioning device delivery outlet, nozzle and is arranged on the imbibition room of nozzle periphery; Described press water import is communicated with the nozzle of jet-flow proportioning device, blowing agent import is communicated with imbibition room, press water is made to enter into jet-flow proportioning device by press water import, spray through nozzle, negative pressure is formed in imbibition room, under subnormal ambient, blowing agent is sucked by blowing agent import, mixes exported by jet-flow proportioning device delivery outlet in company with press water with press water;
Described foam device comprises foaming chamber, and foaming chamber is provided with inlet, pressed gas import and foam outlet; Described pressed gas import and foam outlet are oppositely arranged; Be provided with spiral nozzle and the foam screen for generation of bubble in foaming chamber, spiral nozzle is communicated with described inlet, is arranged on the path between pressed gas import and foam outlet; Foam screen is arranged between spiral nozzle and foam outlet; Pressed gas is nitrogen or air;
Described jet-flow proportioning device delivery outlet is communicated with described inlet.
Based on technique scheme, the utility model also makes following optimization and restriction:
Above-mentioned foaming chamber comprises at least 3 tube connectors be communicated with successively, the tube connector being positioned at two ends is respectively arranged with described pressed gas import and foam outlet, by Flange joint between each tube connector, described foam screen is stuck in the flange connections between any two tube connectors.
Above-mentioned foam dust-removing device also comprises explosion-resistant enclosure, and described foaming chamber is arranged in explosion-resistant enclosure.
The bottom of above-mentioned foaming chamber is provided with leakage fluid dram.
Above-mentioned spiral nozzle is spiral solid conical nozzle.
Above-mentioned jet-flow proportioning device delivery outlet welds with between inlet.
The trunnion that above-mentioned jet-flow proportioning device also comprises anemostat and is communicated with imbibition room, one end of anemostat is communicated with trunnion, and the other end is jet-flow proportioning device delivery outlet; Length of throat is trunnion radius 7 times, and diffusion tube lengths is 8 times of trunnion radius, and nozzle is equal with trunnion radius to the distance of trunnion.
Be equipped with stop valve, filter screen and vortex-shedding meter on the pipeline of press water import and on the pipeline of blowing agent import, the pipeline of pressed gas import be provided with vortex-shedding meter and stop valve.
The utility model has following technique effect:
1) the utility model is safe and reliable, the inlet of foaming chamber is communicated with jet-flow proportioning device delivery outlet, adopt the negative-pressure ward principle of jet-flow proportioning device, effectively can control the ratio of blowing agent and water, and then raising coefficient of foaming, a certain amount of dust suppressant can be added in blowing agent, using press water and compressed air as transmitting power, the bubble jet of generation is spread across on dirt source.
2) not only have the advantage of general spraying and chemical dust suppression concurrently, but also there is following characteristics: (1), when bubble jet is spread across on rock or stockpile, causes void-free foams to cover dirt source, fundamentally stops dust outwardly to spread; (2) when foam solution is sprayed onto in dust laden air, then form a large amount of foam particle groups, its cumulative volume and the gross area increase, and add the collision efficiency with grit; (3) blowing agent that contains of the liquid film of foam, significantly can reduce the surface tension of water, the adsorbed on interfaces that Blowing agent molecules contacts with dust granules at the aqueous solution, changes rapidly the wet performance of dust, adds dust by moistening speed; (4) foam has good viscosity, dust once and foam contacting will be sticked by foam rapidly, thus too increase foam and dust stick efficiency, (5) add a certain amount of dust suppressant, effectively improve efficiency of dust collection.
3) to have foaming effect good for the utility model, fed distance is far away, to the utilization rate advantages of higher of blowing agent, and foam screen can be stuck in the flange connections between any two tube connectors, therefore foam screen can regulate to the distance of nozzle, utilize down-hole compressed air as power, well solve the transportation problem of foam.
4) jet-flow proportioning device of the present utility model mixes blowing agent, dust suppressant and water, down-hole high pressure water and gases at high pressure can be utilized as power, do not need water pump, and then does not also need to use electricity, ensure that the safety of down-hole.
5) the foam dust-removing device volume that provides of the utility model is little, structure is simple, easy to operate, security of operation, reliable and stable, the water supply using power that down-hole can be adopted normally to use, air supply system, use safety and reliability at highly gassy mine, and to environment and personnel without any negative effect.
Accompanying drawing explanation
Fig. 1 is fundamental diagram of the present utility model;
Fig. 2 is structural representation of the present utility model;
Reference numeral:
1-jet-flow proportioning device; The import of 2-press water; 3-is mining stop valve; 4-filter screen; 5-vortex-shedding meter; The import of 6-pressed gas; 7-nozzle; 8-imbibition room; 9-trunnion; 10-anemostat; 11-jet-flow proportioning device delivery outlet; The import of 12-blowing agent; 13-explosion-resistant enclosure; 14-spiral nozzle; 15-foam screen; 16-foam outlet; 17-leakage fluid dram; 18-inlet.
Detailed description of the invention
The utility model provides a kind of foam dust-removing device, as shown in Figure 2, comprises jet-flow proportioning mixing arrangement and foam device;
Jet-flow proportioning mixing arrangement comprises jet-flow proportioning device 1, press water import 2 and blowing agent import 12; Wherein, jet-flow proportioning device comprises jet-flow proportioning device delivery outlet 11, nozzle 7 and is arranged on the imbibition room 8 of nozzle periphery; Press water import is communicated with nozzle, blowing agent import is communicated with imbibition room, press water is made to enter into jet-flow proportioning device by press water import, spray through nozzle, negative pressure is formed in imbibition room, under subnormal ambient, blowing agent is sucked by blowing agent import, mixes exported by jet-flow proportioning device delivery outlet in company with press water with press water.
Foam device comprises foaming chamber, and foaming chamber is provided with inlet 18, pressed gas import 6 and foam outlet 16; Described pressed gas import and foam outlet are oppositely arranged; Be provided with spiral nozzle 14 and the foam screen 15 for generation of bubble in foaming chamber, spiral nozzle is communicated with inlet, is arranged on the path between pressed gas import and foam outlet; Foam screen is arranged between spiral nozzle and foam outlet; Pressed gas is nitrogen or air; Consider the impact on underground work environment, preferred air.The pressure of nitrogen or air is 0.6 ~ 1.0MPa.
Jet-flow proportioning device delivery outlet is communicated with the inlet of foaming chamber.
Spiral nozzle can adopt spiral solid conical nozzle, jet-flow proportioning device delivery outlet can weld with between inlet, foaming chamber can be arranged in explosion-resistant enclosure 13, foaming chamber comprises at least 3 tube connectors be communicated with successively, the tube connector being positioned at two ends is respectively arranged with described pressed gas import and foam outlet, Flange joint is passed through between each tube connector, foam screen can be stuck in the flange connections between any two tube connectors, therefore foam screen can regulate to the distance of nozzle, to ensure better foaming effect, foam screen can regulate according to actual needs to the distance of nozzle, also be convenient to install and change spiral nozzle.
Due to the utility model operationally, can liquid be produced in foaming process, affect foaming work, in order to prevent in foaming chamber hydrops too much, affect foaming effect, being provided with leakage fluid dram 17 in the bottom of foaming chamber.
The trunnion 9 that jet-flow proportioning device also comprises anemostat 10 and is communicated with imbibition room, one end of anemostat is communicated with trunnion, and the other end is jet-flow proportioning device delivery outlet; Length of throat is trunnion radius 7 times, and diffusion tube lengths is 8 times of trunnion radius, and nozzle is equal with trunnion radius to the distance of trunnion.When the pressure of press water is 0.6 ~ 1.2Mpa, the volume flow ratio of blowing agent and press water is 3: 97 or 6: 94.
In order to pressure and the flow of liquid on real time record jet-flow proportioning mixer apparatus pipeline, also in order to ensure foaming quality, prevent impurity from entering into foam device, on the pipeline of press water import and on the pipeline of blowing agent import, be equipped with stop valve, filter screen 4, pressure meter and flow meter, the pipeline of pressed gas import is provided with flow meter, pressure meter and stop valve; Or on the pipeline of press water import and on the pipeline of blowing agent import, be equipped with stop valve, filter screen and vortex-shedding meter 5, the pipeline of pressed gas import be provided with vortex-shedding meter and stop valve.The termination of each pipeline of the utility model have employed mining snap joint, and staff according to the concrete condition of the colliery degree of depth, can increase, dismantle or install the utility model flexibly.
As shown in Figure 1, the use flow chart of the pick face of combining novel foam dust arrester, the utility model is placed in the position that comprehensive pick face needs dedusting, utilize down-hole special pressure water transfer pipeline, 1.0Mpa press water enters the nozzle of jet-flow proportioning device by press water import, at nozzle place due to the stiction between press water jet and air, air near nozzle is taken away, imbibition room is made to form negative pressure, also (flow velocity of main flow increases to form negative pressure near nozzle, potential energy reduces, kinetic energy increases), under environment atmospheric pressure effect, be sucked up (volume flow ratio of blowing agent and press water is 3: 97 or 6: 94) by the blowing agent pumped through imbibition room, and together enter in trunnion in company with press water, two bursts of liquid generation momentum-exchanges in trunnion, part energy passes to by the blowing agent pumped by press water, press water flows decrease, accelerated by the blowing agent speed of pumping, the speed arriving two strands of liquid during trunnion end is gradually consistent, mixed process completes substantially, form foaming mixed liquor and enter anemostat, reduce gradually (kinetic energy reduces gradually) at diffusion velocity in pipes, potential energy (pressure) increases gradually, to the pressure of anemostat exit blowing agent mixed liquor higher than the pressure being flowed into trunnion by the blowing agent body pumped, the pressure of trunnion is flowed into lower than press water, last blowing agent mixed liquor is discharged from the anemostat of DN20mm, by spiral solid nozzle, enter foam device.
In foaming chamber, through spiral nozzle, blowing agent mixed liquor is sprayed onto on foam screen, and pressed gas enters into foaming chamber by pressed gas import, and by foam screen, blowing agent mixed liquor foams, and the flow of power water is 3m
3/ h, compressed air require is 300 ~ 600m
3/ h, calculates according to the ratio of 3: 97 or 6: 94, then the blowing agent of consumption per hour is 0.093m
3/ h or 0.191m
3/ h, the flow entering the blowing agent mixed liquor of foam device is 3.093m
3/ h or 3.191m
3/ h.After foam device, can reach 100 ~ 200 times through test determination coefficient of foaming, the foam volume of generation is 360 ~ 600m
3/ h, the steady bubble time is greater than 30 hours, and property indices all reaches good state.
As shown in Figure 1, after foam device foaming, pass through pneumatic conveyor, foam is transported to and produces dirt region, utilize the mechanisms of action such as foam is wetting to coal dust, interception, adhesion, sedimentation, good eliminating effect is played to the coal dust in comprehensive pick face, by Dust Testing Instrument, measures its efficiency of dust collection.
Claims (8)
1. foam dust-removing device, is characterized in that: comprise jet-flow proportioning mixing arrangement and foam device;
Jet-flow proportioning mixing arrangement comprises jet-flow proportioning device, press water import and blowing agent import; Wherein, jet-flow proportioning device comprises jet-flow proportioning device delivery outlet, nozzle and is arranged on the imbibition room of nozzle periphery; Described press water import is communicated with the nozzle of jet-flow proportioning device, blowing agent import is communicated with imbibition room, press water is made to enter into jet-flow proportioning device by press water import, spray through nozzle, negative pressure is formed in imbibition room, under subnormal ambient, blowing agent is sucked by blowing agent import, mixes exported by jet-flow proportioning device delivery outlet in company with press water with press water;
Described foam device comprises foaming chamber, and foaming chamber is provided with inlet, pressed gas import and foam outlet; Described pressed gas import and foam outlet are oppositely arranged; Be provided with spiral nozzle and the foam screen for generation of bubble in foaming chamber, spiral nozzle is communicated with described inlet, is arranged on the path between pressed gas import and foam outlet; Foam screen is arranged between spiral nozzle and foam outlet; Pressed gas is nitrogen or air;
Described jet-flow proportioning device delivery outlet is communicated with described inlet.
2. foam dust-removing device according to claim 1, it is characterized in that: described foaming chamber comprises at least 3 tube connectors be communicated with successively, the tube connector being positioned at two ends is respectively arranged with described pressed gas import and foam outlet, by Flange joint between each tube connector, described foam screen is stuck in the flange connections between any two tube connectors.
3. foam dust-removing device according to claim 2, is characterized in that: described foam dust-removing device also comprises explosion-resistant enclosure, and described foaming chamber is arranged in explosion-resistant enclosure.
4. foam dust-removing device according to claim 3, is characterized in that: the bottom of described foaming chamber is provided with leakage fluid dram.
5. foam dust-removing device according to claim 4, is characterized in that: described spiral nozzle is spiral solid conical nozzle.
6. foam dust-removing device according to claim 5, is characterized in that: described jet-flow proportioning device delivery outlet welds with between inlet.
7. the foam dust-removing device according to the arbitrary claim of claim 1 to 6, is characterized in that:
The trunnion that described jet-flow proportioning device also comprises anemostat and is communicated with imbibition room, one end of anemostat is communicated with trunnion, and the other end is jet-flow proportioning device delivery outlet; Length of throat is trunnion radius 7 times, and diffusion tube lengths is 8 times of trunnion radius, and nozzle is equal with trunnion radius to the distance of trunnion.
8. foam dust-removing device according to claim 7, it is characterized in that: be equipped with stop valve, filter screen and vortex-shedding meter on the pipeline of press water import and on the pipeline of blowing agent import, the pipeline of pressed gas import be provided with vortex-shedding meter and stop valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419876.5U CN204082202U (en) | 2014-07-28 | 2014-07-28 | foam dust-removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419876.5U CN204082202U (en) | 2014-07-28 | 2014-07-28 | foam dust-removing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082202U true CN204082202U (en) | 2015-01-07 |
Family
ID=52174933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420419876.5U Expired - Fee Related CN204082202U (en) | 2014-07-28 | 2014-07-28 | foam dust-removing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082202U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703869A (en) * | 2016-12-16 | 2017-05-24 | 辽宁工程技术大学 | Comprehensive dust control system for fully-mechanized working face |
| CN106761888A (en) * | 2016-12-16 | 2017-05-31 | 辽宁工程技术大学 | A kind of tapered double fastener laminar foam-making apparatus |
| CN106861321A (en) * | 2017-04-09 | 2017-06-20 | 中国矿业大学(北京) | The magnetized foam preparation facilities and process of a kind of purified industrial dust-contained airflow |
| CN108317107A (en) * | 2018-02-24 | 2018-07-24 | 中交四航局第工程有限公司 | Foam lightweight soil integrated, Foam lightweight soil and its manufacturing method with bubbling jet device |
| CN110252121A (en) * | 2019-07-11 | 2019-09-20 | 启明星宇节能科技股份有限公司 | A kind of tunnel stove desulfurization and dust removal integrated equipment |
-
2014
- 2014-07-28 CN CN201420419876.5U patent/CN204082202U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703869A (en) * | 2016-12-16 | 2017-05-24 | 辽宁工程技术大学 | Comprehensive dust control system for fully-mechanized working face |
| CN106761888A (en) * | 2016-12-16 | 2017-05-31 | 辽宁工程技术大学 | A kind of tapered double fastener laminar foam-making apparatus |
| CN106861321A (en) * | 2017-04-09 | 2017-06-20 | 中国矿业大学(北京) | The magnetized foam preparation facilities and process of a kind of purified industrial dust-contained airflow |
| CN106861321B (en) * | 2017-04-09 | 2018-11-30 | 中国矿业大学(北京) | A kind of the magnetized foam preparation facilities and process of purified industrial dust-contained airflow |
| CN108317107A (en) * | 2018-02-24 | 2018-07-24 | 中交四航局第工程有限公司 | Foam lightweight soil integrated, Foam lightweight soil and its manufacturing method with bubbling jet device |
| CN110252121A (en) * | 2019-07-11 | 2019-09-20 | 启明星宇节能科技股份有限公司 | A kind of tunnel stove desulfurization and dust removal integrated equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150728 |
|
| EXPY | Termination of patent right or utility model |