CN102228813B - Apparatus for automatically adding foaming agent - Google Patents

Apparatus for automatically adding foaming agent Download PDF

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Publication number
CN102228813B
CN102228813B CN 201110130367 CN201110130367A CN102228813B CN 102228813 B CN102228813 B CN 102228813B CN 201110130367 CN201110130367 CN 201110130367 CN 201110130367 A CN201110130367 A CN 201110130367A CN 102228813 B CN102228813 B CN 102228813B
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CN
China
Prior art keywords
ejector
foaming agent
nozzle
mixing chamber
cavity
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201110130367
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Chinese (zh)
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CN102228813A (en
Inventor
王德明
任万兴
陆新晓
王和堂
高庆丛
郭新安
肖洋
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Priority to CN 201110130367 priority Critical patent/CN102228813B/en
Publication of CN102228813A publication Critical patent/CN102228813A/en
Application granted granted Critical
Publication of CN102228813B publication Critical patent/CN102228813B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention relates to an apparatus for automatically adding a foaming agent, which comprises a filter, a main pipe, an ejector, a side branch pipe, a stop valve, an inverted valve, a tapered valve, a soft pipe joint and a liquid suction hose. One end of an inlet joint of the main pipe is connected with a downhole water pipe, one end of an outlet joint of the main pipe is connected with a foam maker, when the flow in the pipeline passes though the addition apparatus, the foaming agent is automatically sucked by using negative pressure formed by the ejector, the foaming agent and water are mixed to form a uniformly foaming liquid and then flows. The vacuum degree of cavity of the ejector and the backpressure of the outlet end can be simultaneously regulated by adjusting the stop valve ofthe side branch, therefore, continuous and stable suction of the foaming agent can be realized, the addition of the foaming agent can be slightly regulated by the tapered valve for realizing the highprecision adjustment of automatically adding of the foaming agent. The present invention also has the characteristics of simple structure, small volume, light weight, high adjusting precision, convenient operation and intrinsic safety, and especially suitable for mixing of the foaming agent and water with small ratio under narrow space of a coal mineral well.

Description

The automatic adding set of a kind of blowing agent
Technical field
The present invention relates to the automatic adding set of a kind of blowing agent, blowing agent mixes with the reasonable of press water when being particularly useful for that small space carries out the foam depositing dust under coal mine.
Background technology
In order to prevent and treat dust, generally adopt dust preventions such as atomizing de-dusting and coal-bed flooding under the coal mine, but all can not contain the dust disaster well because efficiency of dust collection is lower.The foam dust-settling technology has remarkable advantages such as efficient height, water consumption be little, since proposing the 1950's, obtained bigger development, at home and abroad some mining areas have obtained the test application, but the blowing agent corollary apparatus complex structure in the foam dust-settling technology, floor space be big, regulate inconvenience, the addition ratio is difficult to control, cause the too high and waste of material of cost, greatly restricted development and the application of foam dust-settling technology.Experimental results demonstrate that according to the laboratory ratio of blowing agent is at 0.6%~1% o'clock, the depositing dust of foam and economic resultant effect the best.The blender that is used at present other technical field has multiple, is 200810090941.3 to disclose a kind of adjustment type blender as: the patent No..Dislocation generation different opening takes place by the adjustable ring hole corresponding with orifice plate and carries out the mixing of different proportion in this blender, but this blender water and blowing agent all need be injected by external pressure.The patent No. is that 200420016278.X discloses a kind of combined type venturi fertilising valve, adopts in parallel realization of water flow control valve and venturi control valve to mix, and this device Venturi tube structure is simple, but its negative pressure is less, system's instability.The patent No. is 200620078397.7 to disclose a kind of blender of big flow, and this blender comprises and draw bubble pipe, aqueduct, induction tunnel, draws on the bubble pipe to be disposed with Foam switch valve and flow control valve, and aqueduct is provided with water valve.Wherein flow control valve comprises push pedal, annular dividing plate, conical foam awl, connecting rod and back-moving spring.But its foams mix ratio is self-regulating by back-moving spring, so mixed effect is poor, and proportioning can't reach depositing dust foam optimum mixture ratio example scope.
Summary of the invention
Technical problem: the objective of the invention is to overcome the weak point in the prior art, provide a kind of simple in structure, volume is little, the blowing agent addition is easy to control, stable and reliable operation, the automatic adding set of blowing agent easy to adjust.
Technical scheme: the automatic adding set of blowing agent of the present invention, comprise arrival end and the person in charge that high-pressure water pipe under the coal mine links to each other, the port of export links to each other with foam maker, be connected with an ejector on the person in charge, ejector import and export be connected with on the latter linked person in charge before the passage with ejector mutually and the side branch road that connects, the side branch road is provided with stop valve, described ejector mainly by being trumpet-shaped nozzle and constituting with the mixing chamber of nozzle rear portion fit, is provided with sealing gasket between the counterface of nozzle and mixing chamber; The endoporus of nozzle is the contracted channel of conical cavity and cylindrical cavity combination; Mixing chamber by have big small-bore in the body, variform shoulder hole constitutes, the cavity that mixing chamber inlet one end ladder large aperture and nozzle fit form is negative pressure cavity, the mixing chamber outlet section is the horn mouth diffusion chamber, and the ladder small-bore that the horn mouth diffusion chamber links to each other with the nozzle contracted channel is the trunnion chamber; The bottom of ejector is provided with and is communicated with the pipetting hose that the negative pressure cavity via through holes links to each other, and is provided with check-valves, needle valve on the pipetting hose successively, and the lower end of needle valve is provided with hose coupling.
The person in charge in described ejector intake channel the place ahead is provided with filter; Described hose coupling is that trapezoidal external screw thread, the other end are that the externally threaded connector interfaces of level and the hex nut that matches with connector interfaces constitute by an end; The porch of described pipetting hose is provided with filter screen.
Beneficial effect: the present invention has essential safety, simple in structure, characteristics such as volume is little, interpolation precision height.Easy to operate when using in the down-hole, be applicable to that the small scale of blowing agent when the foam depositing dust is carried out in narrow and small places, space such as getting working face under the coal mine, travelling belt transfer point, tunnel is added.This apparatus structure is simple, mixed proportion precision height, easy to adjust, liquid mixes, at the existing apparatus deficiency, the present invention utilizes down-hole pressure water, adopts negative pressure injection mode that blowing agent directly is drawn into pipeline, need not be pre-mixed, check through field experiment, mixed proportion can reach 0.7%, and the foam that produces can reach best dust-laying effect, meets application requirements.Package unit does not need additionaling power, has that volume is little, simple in structure, a stable and reliable operation, advantage easy to adjust.
Description of drawings
Fig. 1 is the automatic adding set structural representation of blowing agent of the present invention.
Fig. 2 is ejector structure sectional structure chart of the present invention.
Fig. 3 is hose coupling structure schematic diagram of the present invention.
Among the figure: 1-is responsible for; The 2-filter; The 3-ejector; The 4-stop valve; 5-side arm; The 6-non-return valve; The 7-needle valve; The 8-hose coupling; The 9-pipetting hose; The 10-filter screen; The 3-1-nozzle; The 3-2-sealing gasket; The 3-3-mixing chamber; The 8-1-connector interfaces; The 8-2-hex nut; The A-conical cavity; The B-cylindrical cavity; The C-negative pressure cavity; The D-trunnion; E-horn mouth diffusion chamber; The import of F-blowing agent.
The specific embodiment
Below in conjunction with accompanying drawing enforcement of the present invention is further described:
Shown in Figure 1, the automatic adding set of blowing agent of the present invention, mainly constituted by the person in charge 1, ejector 3, side arm 5, the person in charge 1 arrival end links to each other with high-pressure water pipe under the coal mine through joint, the port of export links to each other with foam maker through joint, ejector 3 is connected to be responsible on 1, and the person in charge 1 in ejector 3 intake channel the place aheads is provided with filter 2.Ejector 3 import and export be connected with on the latter linked person in charge 1 before the passages with ejector 3 mutually and the side branch road 5 that connects, side branch road 5 is provided with stop valve 4, by regulating the aperture of stop valve 4, can regulate flow and effluxvelocity by nozzle 3-1 in the ejector 3 on the one hand, change the vacuum of negative pressure cavity C inside, can regulate the back pressure of ejector 3 ports of export on the other hand, guarantee the interpolation of blowing agent steady and continuous.The bottom of ejector 3 is provided with the pipetting hose 9 that is communicated with negative pressure cavity C, and the porch of pipetting hose 9 is provided with filter screen 10, is provided with check-valves 6, needle valve 7 on the pipetting hose 9 successively.
Shown in Figure 2, ejector 3 is mainly by being trumpet-shaped nozzle 3-1 and constituting with the mixing chamber 3-3 of nozzle 3-1 rear portion fit, be provided with sealing gasket 3-2 between the counterface of nozzle 3-1 and mixing chamber 3-3, nozzle 3-1 is fixed on the front end of mixing chamber 3-3, and the endoporus of nozzle 3-1 is the contracted channel of conical cavity A and cylindrical cavity B combination; Mixing chamber 3-3 by have big small-bore in the body, variform shoulder hole constitutes, the cavity that mixing chamber 3-3 entrance one end ladder large aperture and nozzle 3-1 fit form is negative pressure cavity C, mixing chamber 3-3 outlet section is horn mouth diffusion chamber E, and the interior middle part of mixing chamber 3-3 has columned trunnion chamber D; Blowing agent is inhaled in the negative pressure cavity C by blowing agent import F.
Be divided into two strands by being responsible for 1 water behind three-way connection: one enters ejector 3, another thigh enters side branch road 5, fluid is realized the speedup step-down through ejector nozzle 3-1, after entrainmenting the air of nozzle 3-1 outlet, form negative pressure in negative pressure cavity C, automatically blowing agent is sucked, the blowing agent that is inhaled into mixes with the jet fluid by horn mouth diffusion chamber E and spreads, again with side branch road 5 in water be compiled in threeway, get back to main line 1 at last.Carry out coarse adjustment by 4 pairs of blowing agents of stop valve, finely tune by needle valve 7 again, realize the small scale step-less adjustment of blowing agent under the high accuracy situation.
Shown in Figure 3, the hose coupling 8 that needle valve 7 lower ends arrange is that trapezoidal external screw thread, the other end are that the externally threaded connector interfaces 8-1 of level and the hex nut 8-2 that matches with connector interfaces 8-1 constitute by an end.

Claims (2)

1. automatic adding set of blowing agent, comprise that arrival end links to each other with high-pressure water pipe under the coal mine, the person in charge that the port of export links to each other with foam maker (1), be responsible on (1) and be connected with side branch road (5), side branch road (5) is provided with stop valve (4), it is characterized in that: be connected with an ejector (3) on the described person in charge (1), the latter linked person in charge (1) went up the side branch road (5) that connects with ejector (3) Xiang Binglian before ejector (3) was imported and exported passage, described ejector (3) mainly by being trumpet-shaped nozzle (3-1) and constituting with the mixing chamber (3-3) of nozzle (3-1) rear portion fit, is provided with sealing gasket (3-2) between the counterface of nozzle (3-1) and mixing chamber (3-3); The endoporus of nozzle (3-1) is the contracted channel of conical cavity (A) and cylindrical cavity (B) combination; Mixing chamber (3-3) by have big small-bore in the body, variform shoulder hole constitutes, the cavity that mixing chamber (3-3) entrance one end ladder large aperture and nozzle (3-1) fit form is negative pressure cavity (C), mixing chamber (3-3) outlet section is horn mouth diffusion chamber (E), and the ladder small-bore that horn mouth diffusion chamber (E) links to each other with nozzle (3-1) contracted channel is trunnion chamber (D); The bottom of ejector (3) is provided with and is communicated with the continuous pipetting hose (9) of negative pressure cavity (C) via through holes (F), is provided with check-valves (6), needle valve (7) on the pipetting hose (9) successively, and the lower end of needle valve (7) is provided with hose coupling (8); The person in charge (1) in described ejector (3) intake channel the place ahead is provided with filter (2); The porch of described pipetting hose (9) is provided with filter screen (10).
2. the automatic adding set of blowing agent according to claim 1 is characterized in that: described hose coupling (8) is that trapezoidal external screw thread, the other end are that the externally threaded connector interfaces of level (8-1) and the hex nut (8-2) that matches with connector interfaces (8-1) constitute by an end.
CN 201110130367 2011-05-19 2011-05-19 Apparatus for automatically adding foaming agent Expired - Fee Related CN102228813B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN102228813B true CN102228813B (en) 2013-09-25

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102817612B (en) * 2012-09-11 2014-08-06 天津理工大学 Tapered jet foam sol generating device for controlling coal dust at transferring point of conveyor belt
CN103089262B (en) * 2013-02-21 2015-03-04 中国矿业大学 Self-adsorption air type foam dust suspension system for coal mining working face
CN103363280B (en) * 2013-07-10 2016-06-29 西安交通大学 A kind of assembling ejector
CN109058180B (en) * 2018-08-16 2020-02-14 中国矿业大学(北京) Gas jet limit imbibition method
CN111530154B (en) * 2020-05-10 2021-12-10 宁夏兴屹建设工程有限公司 Water-saving self-cleaning pipeline filtering device
CN111590809A (en) * 2020-05-23 2020-08-28 侯奥 Adjustable multifunctional foaming mold device

Citations (5)

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Publication number Priority date Publication date Assignee Title
CN2277167Y (en) * 1996-10-24 1998-04-01 农业部规划设计研究院 Fertilizer drill unit in micro-irrigation system
CN2622393Y (en) * 2003-05-27 2004-06-30 中国矿业大学 Pressured pipe antomatic quantitative material feeder
CN2693754Y (en) * 2004-05-14 2005-04-20 包肖文 Visible Counterflow proof water blaster
CN2699642Y (en) * 2004-06-01 2005-05-18 中国科学院遗传与发育生物学研究所 Combined type venturi tube fertilising valve
CN202096902U (en) * 2011-05-19 2012-01-04 中国矿业大学 Automatic foaming agent adding device

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
CN2277167Y (en) * 1996-10-24 1998-04-01 农业部规划设计研究院 Fertilizer drill unit in micro-irrigation system
CN2622393Y (en) * 2003-05-27 2004-06-30 中国矿业大学 Pressured pipe antomatic quantitative material feeder
CN2693754Y (en) * 2004-05-14 2005-04-20 包肖文 Visible Counterflow proof water blaster
CN2699642Y (en) * 2004-06-01 2005-05-18 中国科学院遗传与发育生物学研究所 Combined type venturi tube fertilising valve
CN202096902U (en) * 2011-05-19 2012-01-04 中国矿业大学 Automatic foaming agent adding device

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矿用泡沫降尘技术;任万兴等;《煤炭科学技术》;20091130;第37卷(第11期);第32页第2.3节及图4、图7 *

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Granted publication date: 20130925

Termination date: 20160519