CN203532319U

CN203532319U - Counter-rotating fan blade of mine fan

Info

Publication number: CN203532319U
Application number: CN201320602505.6U
Authority: CN
Inventors: 尹天舒; 刘晨阳; 尹国栋
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-29
Filing date: 2013-09-29
Publication date: 2014-04-09
Anticipated expiration: 2023-09-29

Abstract

The utility model relates to a counter-rotating fan blade of a mine fan. The blade is of an integral structure formed by carrying out die pressing or casting on a blade body and a blade handle, the blade body is a product made of engineering plastic PC or PC composite materials, the blade body is of a sealed cavity structure formed by carrying out die pressing on an upper arc blade and a lower arc blade, the middle of the sealed cavity structure is bulged, the two sides of the sealed cavity structure are thin, the blade handle is composed of a handle head and a handle body which are integrated, the handle head stretches out of the blade body, the handle body is in a screw rod shape and is coated with a cavity of the blade body, and thermosetting resin materials are filled into the space between the handle body and the blade body. The blade has the advantages of being light, firm in combination, high in strength, low in operation noise, long in service life and the like, the defect that the blade handle and the blade body in the prior art are broken can be effectively overcome, the normal operation of the fan is reliably guaranteed, air exhaust efficiency can be improved, and the safety reliability of the mine counter-rotating fan is greatly enhanced.

Description

A kind of mine fan is to counter-rotating fan flabellum

Technical field

The utility model belongs to ventilation equipment technical field, is that a kind of mine fan that is applicable to mine and colliery is to counter-rotating fan flabellum.

Background technique

Mine, colliery are in mining process, under mine, usually produce a large amount of inflammable and explosive harmful gas and the dust such as gas, safety for assurance personnel, mine and equipment, these dust and harmful gas must be discharged in atmosphere, and discharge the large-scale ventilator of the general employing of the used dirt equipment of taking out of this type of gas.Current the used fan of such ventilator is convection rotary type fan, wherein a set of is one-level fan, another set of for secondary fan, two cover fans are combined together has powerful exhausting ability, the poison gases such as gas under mine can be extracted out from down-hole, thereby be avoided issuable accident.But the problem existing is: because convection rotary type fan will produce powerful centrifugal force and axial pressure in running, for guaranteeing that electric fan has enough tensions, resistance to flexure, flabellum generally adopts aluminium matter, aluminum alloy matter or steel material to make.Yet because aluminium matter, aluminum alloy are blamed in the corrosion of bearing down-hole harmful gas medium, thereby on such ventilator, generally adopt at present steel flabellum.But, because the deadweight of steel flabellum is larger, and in fan running the size of the centrifugal force that produces and the deadweight of electric fan be directly proportional, and because leaf body differs in size, the centrifugal force producing is not etc., small-sized ventilator, the centrifugal force of every flabellum generation is 8 ~ 13 tons of left and right, and the centrifugal force that every flabellum of large-scale ventilation blower fan produces often reaches tens of tons.In addition the structure of electric fan is normally by leaf body and petiole riveting, in ventilator running, powerful centrifugal force and the pressure of air current flow are easy to the petiole of flabellum to break, once the flabellum part being pulled off falls into fan, to make one-level flabellum and secondary flabellum all be interrupted, not only cause equipment loss, mine also to stop production thereupon, cause huge loss.Simultaneously, because flabellum part and fan leaf very easily produce spark in mutually colliding, by causing lighting of methane gas, easily cause pernicious explosive accident.

Model utility content

The purpose of this utility model is the defect that overcomes prior art, and a kind of reasonable in design is provided, and quality is light, and tension, resistance to flexure are high, and wear resistance is good, and antistatic is reliable, and the mine fan of long service life is to counter-rotating fan flabellum.

Realizing the technological scheme that the purpose of this utility model takes is: this flabellum is to be structure as a whole by leaf body and petiole mold pressing or moulding by casting, wherein: leaf body is engineering plastic PC or PC composite product, to be molded into the thin enclosed cavity structure in intermediate drum both sides by upper and lower two arcuation blades, petiole is comprised of button and the handle body of one, it is external that button stretches out leaf, handle body is that spiral is shaft-like, is covered by the cavity of leaf body, between handle body and leaf body, is filled with thermoset resin material.

On the screw rod of described handle body, arrange and be laid with at least 2 above through holes.

Described petiole is metallic article.

Described PC composite product is by wherein reinforcing material, Hardening high-abrasive material and the conductive material of any one PC/ABS alloy material or PC/ASA alloy material or PC/PET alloy material or PC/PBT alloy material or PC/PP alloy material or PC/PA alloy material or PC/PTFE alloy material and interpolation form below.

What described reinforcing material adopted is fiber filamentary material, and what Hardening high-abrasive material adopted is silica sand or emery, and what conductive material adopted is acetylene black or carbon black or silica.

The mine fan of making according to such scheme is to counter-rotating fan flabellum, its design science, rational in infrastructure, make simply, it is by improving material and the structure thereof of flabellum, make it have quality light, in conjunction with jail, intensity is high, operation noise is little, the advantage of long service life.This flabellum can overcome the defect rupturing between petiole that conventional art occurs and leaf body effectively, guarantees reliably the normal operation of fan, and can improve air suction efficiency, has greatly strengthened the safety reliability of mining counter rotating ventilator.

Accompanying drawing explanation

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

Embodiment

Referring to Fig. 1, mine fan of the present utility model is to counter-rotating fan flabellum, be to be structure as a whole by leaf body 2 and petiole 1 mold pressing or moulding by casting, wherein: leaf body 2 is engineering plastic PC or PC composite product, and be structure as a whole with petiole 1 mold pressing or the moulding by casting of metallic article.Leaf body 2 is to become the thin enclosed cavity structure in intermediate drum both sides by upper and lower two blade mold pressings, in this case, because being in operation, petiole 1 need to bear larger centrifugal force, therefore the material of petiole 1 still adopts steel structure, petiole 1 is comprised of button 1-1 and handle body 1-2, it is external that button 1-1 stretches out leaf, in order to strengthen the combination force of petiole 1 and leaf body 2, handle body 1-2 adopts spiral shaft-like, and arrange and be laid with more than at least 2 through hole 1-3 on screw rod, handle body 1-2 is covered by the cavity of leaf body 2, between handle body 1-2 and leaf body 2, be filled with thermoset resin material, to increase the kneading intensity of handle body 1-2 and leaf body 2.

In the utility model, the leaf body 2 of flabellum adopts engineering plastic PC or PC composite materials, has good physical and mechanical properties, and especially impact resistance is excellent, and tensile strength, flexural strength, compression strength are high; Creep properties is little, dimensionally stable, and there is good heat resistance and lower temperature resistance, and in wider temperature range, there is stable mechanical property, and dimensional stability, electrical property and flame retarding can be used for a long time at-60 ℃～120 ℃.Engineering plastic PC during leaf body 2 is raw materials used is polycarbonate (PC), can on market, directly purchase.PC composite product used is by wherein reinforcing material, Hardening high-abrasive material and the conductive material of any one PC/ABS alloy material or PC/ASA alloy material or PC/PET alloy material or PC/PBT alloy material or PC/PP alloy material or PC/PA alloy material or PC/PTFE alloy material and interpolation form below.Wherein: ABS is that acrylonitrile-butadiene-styrene terpolymer, ASA are that acrylonitrile-acrylate-styrene terpolymer, PET are that polyethylene terephthalate, PBT are that polybutylene-terephthalate, PP are polypropylene., PA is that polyamide, PTFE are poly-tetrem alkene, these PC composite materials can directly be purchased on market.What the reinforcing material adding in PC composite material adopted is the filiforms such as glass yarn or carbon fiber or staple, can strengthen tension and the resistance to flexure of flabellum, the damage of avoiding flabellum to be caused by centrifugal force and blast in running, thus working life of fan greatly extended.The Hardening high-abrasive material adding is for strengthening the scurf resistance of fan leaf body, can adopt the pulverulent materials such as more than 300 orders silica sand or emery or French chalk.What the conductive material adding adopted is the above acetylene black of 600 order or carbon black or silica, this type of material all has good electric conductivity and higher scurf resistance, can effectively avoid flabellum to produce static, thereby guarantee that fan uses safety in containing inflammable and explosive media environment.The embodiment of making flabellum is: the raw material proportioning of leaf body 2 is to carry out proportioning according to the ratio of thermoplastic engineering plastic PC or the strong Cai Liao of PC Fu He Cai Liao ︰ Zeng ︰ Hardening Nai mill Cai Liao ︰ conductive material=70 ︰ 15 ︰ 10 ︰ 3, its making method is: get PC or PC composite material, insert and in reactor, carry out heating and melting, press again proportioning by reinforcing material, Hardening high-abrasive material, conductive material adds in the PC engineering plastics or PC composite material after dissolving, after being uniformly mixed in reactor, make leaf somaplasm material, again with petiole 1 compound molding of metallic material.In compound molding, adopt vacuum pouring moulding or two kinds of modes of molding and forming all can, make one-piece type flabellum.In the utility model, because petiole 1 is in operation, need to bear larger centrifugal force, so petiole 1 still adopts high-intensity steel structure.And the be in operation centrifugal force that produces and the weight of flabellum of leaf body 2 is directly proportional, therefore the hot shortness that the material selection proportion of leaf body 2 is less and thermosets are as main material, these materials have excellent electrical insulating property, extensibility, dimensional stability and chemical resistance, higher intensity, heat resistance and winter hardiness; Also have from putting out, the characteristic such as fire-retardant, nontoxic, pigmentable, also there is easy processing and the advantage such as cheap simultaneously, be specially adapted to large-scale industrial and produce.In the major ingredient of leaf body 2, be added with reinforcing material and Hardening high-abrasive material, the hardness that can make up major ingredient is not enough, strengthens mechanical strength and the wear-resisting property of flabellum.In addition, in the major ingredient of leaf body 2, be also added with the conductive materials such as acetylene black or carbon black or silica, make flabellum surface resistivity drop to 10 ⁷below Ω, can effectively avoid flabellum to produce surface electrostatic when operation, prevent that down-hole from producing lighting of the inflammable and explosive media such as gas, eliminates accident potential.

Claims

1. a mine fan is to counter-rotating fan flabellum, it is characterized in that: this flabellum is to be structure as a whole by leaf body and petiole mold pressing or moulding by casting, wherein: leaf body is engineering plastic PC or PC composite product, to be molded into the thin enclosed cavity structure in intermediate drum both sides by upper and lower two arcuation blades, petiole is comprised of button and the handle body of one, and it is external that button stretches out leaf, and handle body is that spiral is shaft-like, be covered by the cavity of leaf body, between handle body and leaf body, be filled with thermoset resin material.

2. mine fan according to claim 1, to counter-rotating fan flabellum, is characterized in that: on the screw rod of described handle body, arrange and be laid with at least 2 above through holes.

3. mine fan according to claim 1, to counter-rotating fan flabellum, is characterized in that: described petiole is metallic article.