CN209671274U - A kind of anti-explosion axial-flow type fan - Google Patents

Abstract

The utility model discloses a kind of anti-explosion axial-flow type fans, it include: impeller, the blower housing of both ends open, fire-proof motor, cross bracket, threaded rod is coaxially fixedly installed at the axle center of the impeller, the nut being threadedly engaged therewith is successively set on threaded rod, T-nut, bearing of the coaxial sleeve equipped with close-fitting therewith on T-nut, annulus of the outer profile coaxial sleeve of bearing equipped with close-fitting therewith, there is the blade that the outer profile around impeller is arranged on impeller, strut, the root of blade and the outer profile of wheel hub are rotatably assorted, one end of strut and the root side of blade are hinged, the other end of strut and the end face of annulus are hinged；Threaded rod is provided with blind hole away from one end of wheel hub, threaded rod passes through blind hole coaxial package in the shaft of fire-proof motor and therewith close-fitting, cross bracket is fixedly connected on the shell of fire-proof motor, and fire-proof motor is fixedly connected on the inner wall of blower housing by cross bracket.

Description

A kind of anti-explosion axial-flow type fan

Technical field

The utility model relates to ventilation blower fields, more particularly, to a kind of anti-explosion axial-flow type fan.

Background technique

Anti-explosion axial-flow type fan is the novel fan of Chinese the eighties Curve guide impeller on the basis of BT30-11；It is suitable For conveying inflammable and explosive non-corrosive gas, environment temperature must not exceed 60 DEG C, is widely used in general factory, warehouse, does Public room, premises ventilation or the heat dissipation of strong heating, can also have spaced series in longer exhaust pipe to install, to improve pipeline In pressure, free fan can be done by unloading motor.

Current anti-explosion axial-flow type fan ventilation quantity changes, and general use changes power input to a machine or change blade Angle, and the angle for changing blade is all direct replacement blade, and for a user, this is that increased additional fund is paid Out.

Utility model content

The utility model is to overcome above situation insufficient, it is desirable to provide a kind of technical solution that can solve the above problem.

In the utility model embodiment, a kind of anti-explosion axial-flow type fan, comprising: impeller, both ends open blower housing, Fire-proof motor, cross bracket are coaxially fixedly installed with threaded rod at the axle center of the impeller, be successively set on threaded rod with The nut being threadedly engaged, T-nut, bearing of the coaxial sleeve equipped with close-fitting therewith, the outer profile coaxial sleeve of bearing on T-nut Annulus equipped with close-fitting therewith, blade, strut, the root of blade and the wheel hub that there is on impeller the outer profile around impeller to be arranged Outer profile be rotatably assorted, one end of strut and the root side of blade are hinged, and the other end of strut and the end face of annulus are hinged； Threaded rod is provided with blind hole away from one end of wheel hub, and threaded rod is in the shaft of fire-proof motor and tight therewith by blind hole coaxial package Match, cross bracket is fixedly connected on the shell of fire-proof motor, and fire-proof motor is fixedly connected on blower by cross bracket On the inner wall of shell.

Further, the blower housing is barrel-shaped.

Further, there are two the cross brackets, cross bracket includes inner ring, outer ring, bracket, and inner ring passes through branch Frame is fixedly and coaxially connected with outer ring.

Further, the outer profile of the impeller is equipped with the circular shaft that close-fitting therewith is set in circular trough and circular trough It holds, the root of blade is the inner ring close-fitting of cylindric and end and round bearing.

Further, the outer profile bottom of the blower housing is fixedly installed with support base, and support base is I-shaped.

Further, protective net is fixedly installed at the both ends open of the blower housing.

Compared with prior art, the utility model has the beneficial effects that anti-explosion axial-flow type fan is by changing T-nut The angle of position adjustment blade on threaded rod, the adjusting of Lai Shixian ventilation quantity, than original direct replacement, save the cost, into One step utilizes existing resource, avoids wasting.

The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description In become obvious, or recognized by the practice of the utility model.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the utility model blower housings.

Fig. 2 is the structural schematic diagram of impeller in the utility model.

Fig. 3 is another structural schematic diagram of impeller in the utility model.

Fig. 4 is the structural schematic diagram of blade in the utility model

Fig. 5 is the utility model cross bracket structural schematic diagram.

In figure: 1, blower housing, 2, support base, 3, protective net, 11, cross bracket, 12, fire-proof motor, 13, impeller, 21, blade, 22, strut, 23, threaded rod, 24, nut, 25, T-nut, 26, bearing, 27, annulus, 31, outer ring, 32, inner ring, 33, bracket.

Specific embodiment

Below by the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described Embodiment is only the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The range of the utility model protection.

Please refer to Fig. 1~5, in the utility model embodiment, a kind of anti-explosion axial-flow type fan, comprising: impeller 13, both ends Blower housing 1, fire-proof motor 12, the cross bracket 11 of opening are coaxially fixedly installed with threaded rod at the axle center of the impeller 23, be successively set with the nut 24 being threadedly engaged therewith, T-nut 25 on threaded rod 23, on T-nut 25 coaxial sleeve be equipped with Close-fitting bearing 26, the annulus 27 of the outer profile coaxial sleeve of bearing 26 equipped with close-fitting therewith has on impeller 13 and surrounds impeller Blade 21, the strut 22 of 13 outer profile setting, the root of blade 21 and the outer profile of wheel hub are rotatably assorted, one end of strut 22 Hinged with the root side of blade 21, the end face of the other end and annulus 27 of strut 22 is hinged；Threaded rod 23 deviates from the one of wheel hub End is provided with blind hole 28, threaded rod 23 in the shaft of fire-proof motor 12 and therewith close-fitting, cross by 28 coaxial package of blind hole Bracket 11 is fixedly connected on the shell of fire-proof motor 12, and fire-proof motor 12 is fixedly connected on outside blower by cross bracket 11 On the inner wall of shell 2, its position on threaded rod 23 is adjusted by rotation T-nut 25 and is clamped fixation with nut 24, It pushes blade 21 to adjust the angle by strut 22 and then adjusts ventilation quantity.

Further, the blower housing 1 is barrel-shaped, has biggish draught area.

Further, there are two the cross brackets 11, cross bracket 11 includes inner ring 32, outer ring 31, bracket 33, Inner ring 32 is fixedly and coaxially connected by bracket 33 with outer ring 31, realizes the firm installation of fire-proof motor 12.

Further, the outer profile of the impeller 13 be equipped with circular trough 131 and 131 inner sleeve harness of circular trough have it is coaxial and with Close-fitting round bearing 132, the root of blade 21 is the inner ring close-fitting of cylindric and end and round bearing 132, blade 21 are rotatably assorted by realizing between round bearing 132 and circular trough 131, and prevent blade 21 from falling off.

Further, the outer profile bottom of the blower housing 1 is fixedly installed with support base 2, support base 2 be it is I-shaped, I-shaped support base 2 keeps ventilation blower more firm when installing.

Further, be fixedly installed with protective net 3 at the both ends open of the blower housing 1, prevent manpower, animal, Sundries etc., which enters in blower housing 1, causes ventilation blower to damage and cause danger.

Further, the impeller 13, blower housing 1, fire-proof motor 12, cross bracket 11 are coated with fire proofing material.

The working principle of the utility model are as follows: the both ends of strut 22 end with the root side of blade 21, annulus 27 respectively Face is hinged, and the position for changing annulus 27 by adjusting position of the T-nut 25 on screw rod 23 is pushed forward strut 22 or post-tensioning Band movable vane piece 21 carries out angle adjustment；Nut 24 can cooperate with T-nut 25 to be clamped fixation to annulus 27, make annulus 27 It is rotated synchronously with threaded rod 23, reduces the torque on strut 22, integrally rotate together, be equivalent to a head, have on head Adjust the regulating device of blade angle.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

Claims (6)

1. a kind of anti-explosion axial-flow type fan, comprising: impeller, the blower housing of both ends open, fire-proof motor, cross bracket, It is characterized in that, being coaxially fixedly installed with threaded rod at the axle center of the impeller, it is successively set with screw thread therewith on threaded rod and matches Nut, the T-nut of conjunction, bearing of the coaxial sleeve equipped with close-fitting therewith on T-nut, the outer profile coaxial sleeve of bearing is equipped with therewith The annulus of close-fitting, blade, strut, the root of blade and the outer profile of wheel hub that there is on impeller the outer profile around impeller to be arranged It is rotatably assorted, one end of strut and the root side of blade are hinged, and the other end of strut and the end face of annulus are hinged；Threaded rod back One end from wheel hub is provided with blind hole, threaded rod in the shaft of fire-proof motor and therewith close-fitting, cross by blind hole coaxial package Shape bracket is fixedly connected on the shell of fire-proof motor, and fire-proof motor is fixedly connected on the interior of blower housing by cross bracket On wall.

2. a kind of anti-explosion axial-flow type fan according to claim 1, which is characterized in that the blower housing is barrel-shaped.

3. a kind of anti-explosion axial-flow type fan according to claim 1, which is characterized in that there are two the cross brackets, Cross bracket includes inner ring, outer ring, bracket, and inner ring is fixedly and coaxially connected by bracket and outer ring.

4. a kind of anti-explosion axial-flow type fan according to claim 1, which is characterized in that the outer profile of the impeller is equipped with circle It is set with the round bearing of close-fitting therewith in shape slot and circular trough, the root of blade is the interior of cylindric and end and round bearing Enclose close-fitting.

5. a kind of anti-explosion axial-flow type fan according to claim 1, which is characterized in that the outer profile bottom of the blower housing Portion is fixedly installed with support base, and support base is I-shaped.

6. a kind of anti-explosion axial-flow type fan according to claim 1, which is characterized in that the both ends open of the blower housing Place is fixedly installed with protective net.