BACKGROUND OF THE INVENTION

The present invention relates to an industrial dust collector, and more particularly to a movable industrial dust collector.

As shown in FIG. 1, an industrial dust collector 10 of the prior art comprises mainly a base 12, which in turn is composed of four legs 13 and a hollow housing 14 having a plurality of breathable dust collecting bags 15 attached oppositely to both sides thereof. An air pump 16 is attached to one end of the housing 14 in such a manner that its air outlet 17 communicates with the interior of housing 14. There are a plurality of tube connectors 19 disposed at the place where the air inlet 18 of the air pump 16 is located, while there is at least one dust collecting tube 11 connected to the tube connector 19.

The operation of the prior art industrial dust collector 10 is initiated by the start of the air pump 16, which generates a stream of suction to draw the dust and the other wastes into the dust collecting tube 11 and into the housing 14 via the air pump 16. The air drawn into is finally released via the breathable dust collecting bag 15, while the dust and other wastes drawn into are deposited in the dust collecting bag 15.

The prior art dust collector 10 described above is stationary. Therefore, an extended dust collecting tube 11 must be employed so as to permit the dust collector 10 to reach every corner of the shop floor. As a result, the efficiency of the dust collector 10 in cleaning by suction at a distant corner of the shop floor is greatly compromised. In addition, an extended dust collecting tube 11 laying on the shop floor is a nuisance as well as an inconvenience to the operator of dust collector 10 and other fellow workers in the shop.

SUMMARY OF THE INVENTION

It is therefore the primary objective of the present invention to provide a movable industrial dust collector, which can be moved around on the shop floor to do the cleaning of the floor.

In keeping with the principles of the present invention, the primary objective of the present invention is accomplished by a movable industrial dust collector, which comprises mainly a base, a support set, a suction set, and a filtration set. The base is provided with plural sets of casters, while the support set is disposed on the base to hold securely the suction set. The filtration set is set up on the suction set so as to deposit therein the dust and the other unwanted objects drawn into the dust collector from the shop floor.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a three-dimensional view of an industrial dust collector of the prior art.

FIG. 2 shows a three-dimensional view of an industrial dust collector of the present invention.

FIG. 3 shows a front view of the industrial dust collector of the present invention.

FIG. 4 shows a sectional view of the portion taken along the line 4--4 as shown in FIG. 2.

FIG. 5 shows a sectional view of the portion taken along the line 5--5 as shown in FIG. 2.

FIG. 6 shows a sectional view of the portion taken along the line 6--6 as shown in FIG. 2.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 2-6, the movable industrial dust collector 2 embodied in the present invention is shown comprising a base 20, a support set 30 disposed securely on the base 20, a suction set 40 arranged securely on the support set 30, and a filtration set 50 set up on the suction set 40.

The base 20 is provided with a column 22 having a columnar hole 221 passing through the base 20, a vertical edge 23 extending downwardly from the periphery of the base 20, a pair of lugs 24 provided respectively with a fastening end 241 secured to the base 20 and with a free end 242 extending outwardly beyond the periphery of the base 20, an axial rod 27 mounted in the two axial holes 231 in such manners that it can turn in the axial holes 231 and that its ends extend beyond the vertical edge 23, and a pair of casters 28 attached to both ends of the axial rod 27 so as to facilitate, in cooperation with another casters 26, an easy and free movement of the dust collector 2.

The support set 30 comprises a support plate 32, a pair of connection plates 34, and a pair of tubular braces 36, which are fastened respectively at lower ends thereof to the front and the rear ends of the base 20. The support plate 32 is provided with a flat portion 321 having a through hole 323 and with a pair of curved portions 322 bending rearward from both sides of the flat portion 321. Each of the two connection plates 34 is fastened at upper end thereof to the corresponding curved portion 322 and is attached firmly at lower end thereof to the base 20. The tubular brace 36 comprises a pair of upright tubes 361, a pair of connection pieces 364, and an inverted U-shaped tube 368 bridging the two upright tubes 361. Each of the upright tubes 361 is provided with a curved portion 362 bending toward the front end of the dust collector 2 and fastened to the base 20 by means of a screw 363. The connection piece 364 is of columnar construction and is provided integrally at midsection thereof with a circular flange 365. The connection piece 364 is designed in such ways that its lower end is fitted securely into the upper end of the upright tube 361 and that its upper end is fitted firmly into the lower end of the inverted U-shaped tube 368, as shown in FIG. 5.

The suction set 40 comprises a guide box 42 fastened securely to the support plate 32 and the upper portion of the inverted U-shaped tube 368. The guide box 42 is composed of an upper housing 421 of hollow construction and a lower hollow housing 422, which are united by means of their respective flange 423 and flange 424 which are in turn enclosed in a shield 425, as shown in FIG. 6. The suction set 40 is further provided with an air inlet 43 located at lower portion of front section thereof and with two air outlets 44 located oppositely at the rear section thereof. The air inlet 43 and the air outlet 44 are respectively provided at the circumferences thereof with circular flanges 431 and 441 extending beyond the guide box 42. A motor 45 arranged on the front section of the guide box 42 is provided with a drive shaft 46 to which a suction fan 47 facing the air inlet 43 is fastened. There are a push rail 48 attached securely to the guide box 42 and a suction hose 49 disposed between the base 20 and the guide box 42 in such manners that its upper end 491 is fitted over the flange 431 of the air inlet 43 and that its lower end 492 is fitted securely over the column 22 of the base 20. The lower end 492 of the suction hose 49 can be detached with the column 22 of the base 20 and placed out of the through hole 323 of support plate 32. The stream of suction generated by the rapid rotation of the suction fan 47 driven by the motor 45 is directed to flow out of the air outlets 44 via guide box 42. As a result, the dust and the other objects on the shop floor can be drawn into the suction hose 49.

The filtration set 50 comprises mainly a filtration bag 52 disposed over the guide box 42 and a dust bag 54 arranged under the housing 42. The filtration bag 52 and the dust bag 54 are set up in such a way that their open ends are respectively fitted over the circular flanges 441 of the air outlets 44. The filtration bag 52 made of breathable material is suspended by means of a suspension rod 56 with its lower end fastened securely to the guide box 42 and with its upper end bent appropriately to facilitate the suspension of the filtration bag 52. The air, which is drawn into the dust collector 2 along with dust and unwanted objects, is released into the air via the breathable filtration bag 52, while the dust and the objects drawn into the dust collector 2 are deposited in the dust bag 54. The lower end 492 of the suction hose 49 can be disconnected with the column 22 of the base 20 and can be placed through the through hole 323 of the support plate 32 for the convenience of cleaning the machinery and other shop facilities located on the shop floor.

The embodiment of the present invention described above is to be considered in all respects as merely an illustration of principles of the present invention. Accordingly, the present invention is to be limited only by the scope of the hereinafter appended claims.