CN100585189C

CN100585189C - Rotary disk air-distributing and jet disturbing type hydraulic fan

Info

Publication number: CN100585189C
Application number: CN200510038834A
Authority: CN
Inventors: 张景松
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2005-04-08
Filing date: 2005-04-08
Publication date: 2010-01-27
Anticipated expiration: 2025-04-08
Also published as: CN1844676A

Abstract

The invention discloses a rotation-disc wind-distribution jet disturb hydraulic wind engine, which is used to treat the problem of gas accumulation at the working surface when excavating coal. Wherein, said wind engine can be driven by emulsion motor or oil motor; two ends of wind engine both have output axles; the high-speed end is mounted with blade wheel; the low-speed end is mounted with wind-distribution rotation disc which has an annular wind outlet or jet outlet which is not fully opened; the rotation of wind-distribution rotation disc can be driven by aerated blade wheel or via speed reducer driven by the hydraulic motors at two output axles, to generate a disturb wind flow with different frequency in a taper area, to increase the adsorption ability of jet on around gas.

Description

Rotary disk distributing air and jet disturbing type hydraulic fan

One, technical field

The present invention relates to a kind of rotary disk distributing air and jet disturbing type hydraulic fan, this blower fan is specially adapted to administer the methane accumulation of coal mining face upper corner angle, guarantees Safety of Coal Mine Production.

Two, background technique

The methane accumulation of coal mining face upper corner angle is one of fundamental cause of colliery generation gas explosion, the methane accumulation of U type ventilation coal-face upper corner is the global problem that Coal Production often takes place and is difficult to administer, in the work of administering methane accumulation, because method is improper, it is improper particularly to equip, the serious accident that too much fire origin causes gas explosion takes place, and therefore, is studying both at home and abroad always and can effectively administer the equipment of coal-face upper corner methane accumulation.At present, the improvement method of coal mining face upper corner angle methane accumulation can the row of reducing, draw, blow, lead, take out etc.Concrete representational way is: 1. at the face upper corner angle place air partition or partition wall are set, adopt no-spark portable blower pump drainage; 2. use distinguished and admirable ejector and explosion-proof portable blower pump drainage; 3. adopt the gas of automatic control system in pressure extraction goaf, upper corner place, its natural outburst amount is reduced; 4. produce pulse jet with the radial jet blower fan and blow row.Draft type in addition changes; Strengthen methods such as main ventilation amount.

1. 2. the methane accumulation of 3. ruling by law reason upper corner is effectively, but they have all adopted electronic local blower fan to add the system of pump drainage air duct, and mobile resettlement has inconvenience, also will prevent the gas exceeding limit in the pump drainage air duct in the use.4. method adopts the small-sized hydraulic blower fan to be placed in the upper corner place directly to blow row, have that system is simple, convenient removal, advantage that control range is big, because of it has adopted the safe hydraulic pressure power source of no-spark performance, so can be used for administering the upper corner gas that has transfinited, this is in demand in the colliery.But this method will be applied, and also needs to solve following problem: 1. the oil hydraulic motor used of hydraulic blower can use the emulsified liquid or the press water of coal-face, and guarantees its working life; 2. have and entrainment the jet stronger with the disturbance ability, the sense of rotation of jet can not be confined to the plane; 3. the swing of the rotation of impeller and blower fan (or rotation) is finished with a motor, makes more miniaturization of blower fan.

Three, summary of the invention

1, goal of the invention

The present invention is directed to the practical problem that above urgent need solves, designed a kind of high safety reliability, distinguished and admirable EFFECTIVE RANGE is long, diffusion strength is high rotary disk distributing air and jet disturbing type hydraulic fan.This blower fan adopts an emulsion motor or oil motor to drive, it is distinguished and admirable to produce the different disturbance of frequency in a conical region, strengthened the entrainment mixing ability of jet greatly, thereby can eliminate the methane accumulation in its effective range safely fast ambient gas.

2. technological scheme

This blower fan can drive with emulsion motor or oil motor, all there is output shaft at the blower fan two ends, end dress draught fan impeller at a high speed, the one end dress cloth wind rotating disk of low speed, have not exclusively go in ring exhaust outlet or spout on the cloth wind rotating disk, the rotation of cloth wind rotating disk can be driven by air impeller, and the oil hydraulic motor of also available two ends shaft is through the speed reducer rear driving.This blower fan is mainly by the import protective net, urceolus, draught fan impeller, inner core, oil hydraulic motor, pressing plate is installed, adjustable vane, air impeller, supporting base, cloth wind rotating disk, outlet protective net and stator are formed, oil hydraulic motor is packed in the inner core, with pressing plate and bolt are installed, draught fan impeller is contained on the high-speed output end axle of oil hydraulic motor, cover the import protective net, with screw supporting base is fixed on the installation pressing plate, again air impeller and cloth wind rotating disk are being contained on the middle low speed output terminal axle of supporting base in the lump, and be screwed, cover the outlet protective net at last, urceolus and inner core are connected and fixed by stator, fix some stator blades on the air impeller equably, also arrange some adjustable vanes, have 1～2 exhaust outlet on the cloth wind rotating disk, the incomplete annular of the shape of exhaust outlet shown in can figure also can be circular, rectangle or other shape.

3. technique effect

This blower fan does not produce spark in itself adopting existing high-pressure water and emulsified liquid power source under the coal mine aspect the power; Go out that the one's intention as revealed in what one says jet has certain rotation, the line of direction,principal that blows out air-flow can be divided into a conical surface, have and entrainment the wind jet stronger with the disturbance ability, the sense of rotation of wind jet is not limited to the plane; The rotation of the rotation of impeller and cloth wind rotating disk is finished with a motor, makes more miniaturization of blower fan.

Four, description of drawings

Fig. 1 is the structural representation of facing of the present invention

Fig. 2 is an air impeller structural representation of the present invention

Fig. 3 is a cloth wind turntable structure schematic representation of the present invention

Five, embodiment

Below in conjunction with accompanying drawing one embodiment of the present of invention are further described:

Rotary disk distributing air and jet disturbing type hydraulic fan of the present invention is by fluid motor-driven, as shown in Figure 1, this blower fan mainly is made up of import protective net 1, urceolus 2, draught fan impeller 3, inner core 4, oil hydraulic motor 5, installation pressing plate 6, adjustable vane 7, air impeller 8, supporting base 9, cloth wind rotating disk 10, outlet protective net 11 and stator 12.Oil hydraulic motor 5 is packed in the inner core 4, and with pressing plate 6 and bolt are installed, draught fan impeller 3 is contained on the high-speed output end axle of oil hydraulic motor 5, covers import protective net 1, uses screw

Supporting base 9 is fixed on the installation pressing plate 6, air impeller 8 and cloth wind rotating disk 10 is being contained on the low speed output terminal axle of supporting base 9 centres in the lump again, and is being screwed, cover outlet protective net 11 at last, urceolus 2 is connected and fixed by stator 12 with inner core 4.

As shown in Figure 2, the air impeller 8 of rotary disk distributing air and jet disturbing type hydraulic fan is fixed some stator blades equably on it, also arrange some adjustable vanes 7, has petiole on the adjustable vane 7, can be fastened on the wheel hub of air impeller 8 by nut.

As shown in Figure 3, the cloth wind rotating disk 10 of rotary disk distributing air and jet disturbing type hydraulic fan has 1～2 exhaust outlet on its rotating disk, and the shape of exhaust outlet not exclusively going in ring shown in can figure also can be circular, rectangle or other shape.

As shown in Figure 1, the work and the adjusting of blower fan are finished like this: when the high-pressure emulsion breast is connected in the import of oil hydraulic motor 5, main shaft impeller 3 high speed rotating of oil hydraulic motor 5, suction air enters draught fan impeller 3 from the intake grill that has protective net 11, the air-flow of acquisition energy becomes axially after passing through the ring runner that has stator 12 substantially, promote air impeller 8 and cloth wind rotating disk 10 and slowly run together, thus the gas jet of generation disturbance in a conical region.Change the setting angle of adjustable vane 7, can change the rotating speed of air impeller 8, and then regulate the flow perturbation frequency.Change multi-form cloth wind rotating disk 10, can obtain the gas jet of different qualities.

As shown in Figure 2, the rotational speed regulation principle of cloth wind rotating disk is finished like this: air impeller 8 is equipped with some stator blades and some adjustable vanes 7 equably, the axis of the relative air impeller 8 of the established angle of stator blade is constant, and the established angle of adjustable vane 7 is variable, suppose that it is axially that air-flow enters air impeller 8 preceding directions, because there is rotational resistance torque in air impeller 8, so the absolute velocity when air flow stream goes out air impeller 8 must produce certain deflection, produce absolute winding speed C thus _2u, when the structure of air impeller 8 was constant, rotational resistance torque was constant substantially, so absolute winding speed C _2uSize also constant substantially, when changing the established angle of adjustable vane 7, change with regard to the direction that makes the average phase velocity of outlet, cause the peripheral velocity size variation thus, thereby changed the rotating speed of air impeller 8 and cloth wind rotating disk 10, and then changed the forcing frequency of outlet jet.

Claims

1, a kind of rotary disk distributing air and jet disturbing type hydraulic fan, it is characterized in that: by import protective net (1), urceolus (2), draught fan impeller (3), inner core (4), oil hydraulic motor (5), pressing plate (6) is installed, adjustable vane (7), air impeller (8), supporting base (9), cloth wind rotating disk (10), the blower fan that outlet protective net (11) and stator (12) are formed, adopt fluid motor-driven, oil hydraulic motor (5) is packed in the inner core (4), with pressing plate (6) and bolt are installed, draught fan impeller (3) is contained on the high-speed output end axle of oil hydraulic motor (5), cover import protective net (1), with screw supporting base (9) is fixed on the installation pressing plate (6), again air impeller (8) and cloth wind rotating disk (10) are contained on the middle low speed output terminal axle of supporting base (9) in the lump, and be screwed, cover outlet protective net (11) at last, urceolus (2) is connected and fixed by stator (12) with inner core (4), air impeller is fixed some stator blades on (8) equably, also arrange some adjustable vanes (7), adjustable vane has petiole on (7), be fastened on by nut on the wheel hub of air impeller (8), change the setting angle of adjustable vane (7), can change the rotating speed of air impeller (8) and cloth wind rotating disk (10), thereby regulate the forcing frequency of exit flow, have 1～2 exhaust outlet on the cloth wind rotating disk (10), change multi-form cloth wind rotating disk (10), can obtain the gas jet of different qualities.

2, rotary disk distributing air and jet disturbing type hydraulic fan according to claim 1 is characterized in that: the exhaust outlet shape on the cloth wind rotating disk (10) can be incomplete annular, circle or rectangle.