JPH0741338U - Dust collection hood - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a dust collection hood that can move the suction hood to the source of dust freely and accurately suck dust. [Structure] An expandable horizontal duct 4 is rotatably connected to a dust collecting fixed duct 20 and an expandable vertical duct 7 is connected to the tip end thereof, and a suction hood is provided at the lower end of the vertical duct 7. 8 is attached so that it can be rotated horizontally and the tilt angle can be adjusted.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a movable dust-collecting hood capable of accurately moving a suction hood to a dust generation source and accurately sucking dust.

[0002]

[Prior art]

 For example, conventionally, for cast parts made of cast iron, etc., the molten metal part is cut by gas cutting after casting, but generally, the cast parts to be gas cut are irregularly placed within the working range of the cutting site. They are lined up and these cast parts are individually gas-cut by hand. When cutting the gas from such cast parts, a large amount of smoke is emitted, which significantly reduces the environment at the work site.As a countermeasure, place a suction hood at the top of the work site and place it inside the suction hood. Smoke is being collected.

[0003]

[Problems to be solved by the device]

 However, when cutting the riser part of cast parts as described above, since the cast parts that are lined up are sequentially cut, the cutting position generally moves at intervals of about 10 minutes, so the smoke generation position also changes sequentially. Become. Also, the smoke emission direction changes depending on the cutting direction and the posture of the operator, and therefore the smoke emission direction changes for each cast part, and it is difficult to reliably collect smoke with a fixed suction hood. There are issues such as difficulty in improving the environment. An object of the present invention is to provide a movable dust collecting hood capable of surely collecting smoke generated during cutting of such cast parts.

[0004]

[Means for Solving the Problems]

 In the dust collecting hood of the present invention, which solves the above-mentioned problems, an expandable horizontal duct is pivotally connected to a fixed dust collecting duct, and an expandable vertical duct is connected to the tip end thereof. However, a suction hood is attached to the lower end of the vertical duct so that the suction hood can be horizontally rotated and the tilt angle can be adjusted.

[0005]

【Example】

 Next, a case where the present invention is applied to dust collection for gas cutting of a riser portion of a casting part will be described in detail with reference to the illustrated embodiment. In the figure, reference numeral 1 denotes a pillar installed in a factory, a fixed duct 20 communicating with a dust collector (not shown) is attached to the pillar 1, and a beam-shaped frame body is provided above the pillar 1. 2 is provided and a multi-stage telescopic horizontal duct 4 composed of a plurality of cylinders is supported on the base 2, and its base is rotatably connected to the fixed duct 20 via a connecting cylinder 4a. The retractable horizontal duct 4 is constructed so that it can be freely contracted and extended by winding or rewinding the rope 5 by the winder 6, and the rotary shaft 21 of the support column 1 is used as a fulcrum. Is configured so that it can be swung while maintaining a horizontal state through the connecting cylinder portion 4a.

Reference numeral 7 denotes a vertical duct continuously provided at the tip of the horizontal duct 4. The vertical duct 7 is a multistage telescopic type having a plurality of cylinders, and a suction hood is provided at the lower end of the vertical duct 7. 8 is attached so as to be capable of horizontally rotating and adjusting the tilt angle, and the direction of the suction port is freely configured. As shown in FIG. 2, the vertical duct 7 vertically extending and retracting mechanism in the embodiment is constructed such that the inner tube 10 is slidably inserted into the outer tube 9 of the multi-step telescopic vertical duct 7 and is screwed. When one end of the bar 11 is fixed to the inner cylinder 10 via the bracket member 12 and the other end is fixed to the outer cylinder 9 and the screw bar 11 is rotated by the motor 13 via the gear box 14, the inner cylinder 10 becomes the outer cylinder 9. Although it is intruded and retracted inside and expands and contracts, it is not limited to such a thing.

Further, in the embodiment, as the horizontal turning mechanism of the suction hood 8, a gear 15 is arranged on the outer periphery of the tip end portion of the inner cylinder 10, and the inner cylinder 10 is rotated via the gear 15 by the operation of the motor 16. Therefore, the suction port of the suction hood 8 attached to the tip of the inner cylinder 10 is freely swiveled in the horizontal direction. Further, as each adjusting mechanism of the suction hood 8, the handle 17 is rotated. Although the shaft 19 engaged with the form 18 via the gear box 19 is rotated by this, the vertical tilt angle can be freely adjusted, but these mechanisms are not limited to those of the embodiment. Of course.

[0008]

[Action]

 In such a structure, a large number of casting parts to be gas-cut are arranged within the maximum extension range of the horizontal duct 2, and the position, cutting direction, etc. of each casting part is changed according to the change in the smoke generation direction. , The suction hood 8 is contracted, expanded and horizontally swiveled to ensure the optimum plane position, and then the vertical duct 7 is contracted and expanded to ensure the optimum vertical position. Finally, the suction hood 8 is secured. The horizontal swivel and vertical tilt adjustment ensure that the opening surface of the suction port is at the optimum position, so that it can be accurately positioned in any dust-generating direction, and dust can be reliably collected. it can . Then, the dust collected by suction from the suction port 8 is guided from the fixed duct 20 to the dust collector through the vertical duct 7 and the horizontal duct 2, where it is subjected to dust collection processing and is released outside the building.

[0009]

[Effect of device]

 As is apparent from the above description, the present invention can accurately suck dust by moving the suction port of the suction hood to the dust source even when the dust source sequentially moves. Therefore, the working environment can be significantly improved, and the position setting operation of the suction hood can be performed easily and surely, so that the position setting can be performed without lowering the work efficiency. Furthermore, since the working environment is greatly improved, working efficiency is improved, and various excellent effects such as productivity can be enhanced. Therefore, the present invention has a great practical value as a dust-collecting hood that eliminates the conventional problems.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a connecting portion between a vertical duct and a suction hood.

FIG. 3 is a sectional view of a main part in FIG.

[Explanation of symbols]

 4 Horizontal duct 7 Vertical duct 8 Suction hood 20 Fixed duct

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical display location F24F 13/02 A (72) Inventor Yoshimi Kida No. 1 Nishinagane, Sakazaki character, Koda town, Akita prefecture Chishinto Dust Collector Co., Ltd. Koda Factory

Claims (1)

[Scope of utility model registration request] 1. An expandable horizontal duct (4) is rotatably connected to a fixed dust collecting duct (20), and an expandable vertical duct (7) is connected to the tip of the fixed horizontal duct (4). A suction hood (8) is attached to the lower end of the duct (7) for horizontal rotation and tilt adjustment.