CN2405642Y

CN2405642Y - Improved structure of blast box

Info

Publication number: CN2405642Y
Application number: CN 00200833
Authority: CN
Inventors: 刘明煌
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-19
Filing date: 2000-01-19
Publication date: 2000-11-15
Anticipated expiration: 2010-01-19

Abstract

The utility model provides an improved structure of a blast box. Mainly, the peripheries of a rear casing body and a front casing body which form the blast box are respectively provided with a first flange and a second flange which extend outwards and symmetrically; the end part of the second flange extends further outwards, and a ruffle border is arranged on the end part of the second flange; after the first flange and the second flange oppositely abut on each other and are mutually attached, the ruffle border is pressed and folded downwards; the first flange is completely coated in the second flange. Thus, the effects of simple and easy connection and tightness are achieved.

Description

The improvement structure of bellows

The utility model is relevant with the shell construction of bellows, is meant that especially a kind of to have a winding simple and easy and have more the improvement bellows structure of preferable sealing effect.

With regard to skill in advance, generally be installed in the bellows structure of industrial dust collector, normally form by forward and backward two relative hollow casings, and the winding mode of this two hollow casing common have two kinds:

First method, engaged in the periphery of this two housing mode with welding, only this kind winding mode must have the technology of high welding, and strict QC Quality Control, not only during production costs, cost height, and more can produce gas leak phenomenon just in case winding sealing is bad, and will cause the not good using effect of its suction bad, influence the effect of dust collector.

Second method, then be that periphery in this two housing is provided with can overlapping relatively flange, and several screws with the intended distance of being separated by give sealed between this two flanges, also there is the mode that between adjacent two-screw, is aided with spot welding to add strong bond, this kind method must be holed when winding in advance, tapping, more necessary other preparation tool, the program of processing also seem that trouble is with inconvenient.

Main purpose of the present utility model promptly is to provide a kind of improvement structure of bellows, it can make the winding of bellows front and back housing more simple and easy, can effectively reduce manufacture cost, and the winding of housing is exempted from boring and is exempted from use screw before and after the bellows, makes between the housing of front and back to have more preferable sealing effect.

Edge is taken off purpose with on reaching, and the improvement of a kind of bellows of the utility model is constructed, and includes a rear case and a front case of combination relatively, and this back, front case have the relative interior concave space of an opening end respectively; It is characterized in that:

This rear case has one by stretch out first flange of a predetermined width of its opening end ora terminalis;

This front case also has one by stretch out second flange of a predetermined width of its opening end ora terminalis, and in the outside of this second flange and stretch out again and be provided with a Flanging; Fit with the inner edge surface of this second flange and the inner edge surface of this first flange, again with this Flanging down backfin fit on the outer edge surface of this first flange, this first flange is coated between this second flange and this Flanging.

Wherein the top of this forward and backward housing all has the slotted eye of a semicircle, make the slotted eye of this front shell cover convex with two clinchs respectively radially, outward in its two sidewall, this second flange then is the below of establishing this clinch, the position that is provided with of this first flange then is corresponding to this first flange person, when making this two slotted eyes portion be positioned at winding, be with of the two sidewall joinings of this two clinch, make a formed exhaust outlet directly wear joint for the end of a delivery pipe for another slotted eye.

Wherein the interior concave space central authorities of this rear case have wholeheartedly hole, can wear pivot for the axle of a motor enters in this in concave space, the centre of this front case then has a circular hole, just can place concave space in this by this circular hole for a fan, and with the axle winding of this motor, be covered on this circular hole with a front shell cover more afterwards, and make and have a suction port on this front shell cover, be with this exhaust outlet and be communicated with.

Now lift a preferred embodiment of the present utility model, and cooperate graphic be described in further detail as follows, wherein:

Three-dimensional appearance schematic representation when Fig. 1 is used in industrial dust collector for the utility model one preferred embodiment bellows.

Fig. 2 is the three-dimensional exploded view of the utility model bellows.

Fig. 3 is the combined planar schematic representation of the utility model bellows.

Fig. 4 is the cross-sectional schematic of Fig. 3 in the 4-4 direction.

Fig. 5 is the cross-sectional schematic of Fig. 3 in the 5-5 direction.

Fig. 6 is the three-dimensional exploded view of structure applications on the wind-guiding case of dust collector with the utility model bellows.

At first see also shown in Figure 1, use the industrial dust collector 1 of the utility model bellows 20, it includes a wind-guiding case 11, be that mat two groups of holders 12 supporting frames are located on the base 13 that can move arbitrarily, on this wind-guiding case 11, the lower end then locks respectively a filter bag 14 and a collection bag 15, intake grill 16 places in this wind-guiding case 11 have then picked out a delivery pipe 17, the end in addition of this delivery pipe 17 then is connected on this bellows 20, in addition then have a motor 18, be inserted into inner and winding one fans 19 of this bellows 20 (please cooperate consult shown in Figure 2) with the axle 181 of this motor 18 in the rear of this bellows 20.

By this fan 19 that driven by this motor 18, the air in the external world is sucked in these wind-guiding case 11 inside via this bellows 20, delivery pipe 17, and formation dust suction effect, enter the air-flow in this wind-guiding case 11, discharge outward via the filter bag 14 of this tool gas permeability again, the dirt bits that are mixed in this air-flow are stopped by this filter bag 14, then fall at last in this collection bag 15.

And the utility model improves is these bellows 20 structures, and it includes the leak-proof gasket 26 that front shell cover 25 and that a rear case 23, a front case 24 and be covered on this front case 24 is embedded at 25 of this front case 24 and this front shell covers; Wherein

This rear case 23 has the opening end 32 that concave space 31 and one day the place ahead in is free and open shape, the top of concave space 31 is formed with the slotted eye 33 of a semi-circular shape in this, and outwards extend horizontally away first flange 34 of a tool predetermined width in intended distance place, the below of this slotted eye 33, along the ora terminalis of this opening end 32; In addition, concave space 31 central authorities have wholeheartedly hole 35 in this, are to wear pivot for the axle 181 of this motor 18 to enter in this in concave space 31.

This front case 24 has the opening end 42 that an interior concave space 41 and is free and open shape towards the rear, the top of concave space 41 also is formed with the slotted eye 43 of a semi-circular shape in this, two sidewalls in this slotted eye 43 convex with two clinchs 47 radially, outward along it respectively, in the below of clinch 47, then along a pair of second flange 44 that should first flange, 34 width of the outside horizontal-extending of the ora terminalis of this opening end 42, and in the outside of this second flange 44 and stretch out again and be provided with a Flanging 45, make the width of this Flanging 45 approximate this second flange 44; Again, having a circular hole 46 in the centre of this front case 24, is to be placed in this in concave space 41 by this circular hole 46 for this fan 19, must with axle 181 windings of this motor 18.

This front shell cover 25 is can be covered on the circular hole 46 of this front case 24, and this leak-proof gasket 26 is to be embedded between this front shell cover 25 and this front case 24, the bolt element 51 of mat plural number is locked again, and the dead ahead of this front shell cover 25 has a suction port 52, can not show the inlet that provides as suck air by external again other socket pipe figure.

During combination, see also shown in Figure 3, be with the opening end 31 of this rear case 23 with this front case 24,41 are involutory, at first, make this two slotted eye 33,43 when winding, be the two sidewall joinings (as shown in Figure 4) that supply this slotted eye 33 with this two clinch 47 of these slotted eye 43 2 sides respectively, can directly wear joint for the end of this delivery pipe 17 with the exhaust outlet that forms a pipe shape, and the inner edge surface 34a of first flange 34 of the inner edge surface 44a of this second flange 44 of this front case 24 and this rear case 23 fits (as shown in Figure 5), again with the down backfin and fitting on the outer edge surface 34b of this first flange 34 of this Flanging 45, this first flange 34 is coated between this second flange 44 and this Flanging 45, can reach fluid-tight engagement, complete seamless winding state, more be not afraid of and have poor sealing and produce gas leak phenomenon, and the action of its winding is simple, easily, must be when not commonly using with the welding manner winding, must be by the welding master worker operation of the suitable technology of tool, therefore can reduce cost, and and exempt to hole, tapping more can be saved process time.

In addition, what deserves to be mentioned is, two housing mat two flanges of the utility model bellows are fitted relatively, and extend the Flanging add with a flange outer sides, backfin is also coated another flange, and finish combined structure seamless between two housings, can apply to equally on the wind-guiding case of dust collector, as shown in Figure 6, as long as on this wind-guiding case 30, the periphery of lower shell body 3132, be respectively equipped with and outwards be horizontally extending one first and one

second flange

34,35, and the outside of this second flange 35 is extended in addition again and is provided with a Flanging 36, with combination as hereinbefore, then can provide fluid-tight engagement equally, complete seamless winding effect, certain scarce fraud that produces gas leak phenomenon with regard to not having poor sealing.

In sum, the utility model utilizes the cooperation of a two flanges and a Flanging, can provide to engage tight, seamless and have the bellows structure of advantages such as can reducing manufacture cost and man-hour, is one to have the novel designs of patent requirement.

Claims

1. the improvement of a bellows is constructed, and includes a front case, a rear case of combination relatively, and this forward and backward housing has the relative interior concave space of an opening end respectively: it is characterized in that:

This front case also has one by stretch out second flange of a predetermined width of its opening end ora terminalis, and in the outside of this second flange and stretch out again and be provided with a Flanging: fit with the inner edge surface of this second flange and the inner edge surface of this first flange, again with this Flanging down backfin fit on the outer edge surface of this first flange, this first flange is coated between this second flange and this Flanging.

2. the improvement of bellows according to claim 1 is constructed, it is characterized in that, wherein the top of this forward and backward housing all has the slotted eye of a semicircle, make the slotted eye of this front shell cover convex with two clinchs respectively radially, outward in its two sidewall, this second flange then is the below of establishing this clinch, the position that is provided with of this first flange then is corresponding to this first flange person, when making this two slotted eyes portion be positioned at winding, be with of the two sidewall joinings of this two clinch, make a formed exhaust outlet directly wear joint for the end of a delivery pipe for another slotted eye.

3. the improvement of bellows according to claim 1 is constructed, it is characterized in that, wherein the interior concave space central authorities of this rear case have wholeheartedly hole, can wear pivot for the axle of a motor and enter in this in concave space, the centre of this front case then has a circular hole, just can place concave space in this by this circular hole for a fan, and with the axle winding of this motor, be covered on this circular hole with a front shell cover more afterwards, and make and have a suction port on this front shell cover, be with this exhaust outlet and be communicated with.