JP2688537B2 - Dust chute - Google Patents

Description

TECHNICAL FIELD The present invention relates to a dust chute.

[Conventional technology]

In high-rise buildings, etc., a dust chute is usually installed as a facility for collecting garbage from each floor to a collection site. The dust chute is shown in FIGS. 5 (a) and 5 (b).
The one shown in (c) is conventionally known.

FIG. 5 (a) shows a straight tube-shaped chute 10a provided with dampers 11 at appropriate intervals, and FIG. 5 (b) shows a chute 10b provided with bent portions 12 at appropriate intervals. is there. Further, (c) is a structure in which a plurality of chute units 10c are provided with their positions shifted in the left-right direction, and the chute units 10c are connected by a screw conveyor 13 or the like.

[Problems to be Solved by the Invention] In each of the above conventional dust chutes, the damper 11
In the bent portion 12 and the connection position of the screw conveyor 13,
It is designed to absorb the impact force when dust falls, but since the dust that has fallen is received at each position, it is not possible to absorb the energy of the fall sufficiently, and a comparatively loud impact noise is generated. I have a problem to do.

Further, at the connection position of the damper 11 and the screw conveyor 13, the moving speed of the dust sharply decreases, so that the dust is likely to be retained and the dust is likely to be clogged.

Further, in the dust chute shown in FIGS. 5B and 5C, since the shape of the chute expands in the horizontal direction, there is a problem that a large space is required for installation.

Therefore, an object of the present invention is to generate a shocking sound and to smoothly drop dust without clogging the dust in the chute,
Moreover, it is to provide a dust chute that does not require a large installation space.

[Means for solving the problem]

In order to solve the above problems, in the present invention, a plurality of dust inlets are provided in a vertically long tubular chute at predetermined height positions on each floor of the building, and the inside of the chute has a pitch corresponding to each floor height. With spiral blades,
This spiral blade starts from the dust entrance height position on each floor to which the half-pitch spiral receiving surface corresponds, passes below the dust entrance, and is provided along the inner surface of the chute near the dust entrance and along the inner surface of the chute. It has been configured.

In the above structure, in order to smoothly drop dust, the spiral blades are continuous in the range from the upper end to the lower end of the chute, and in order to reduce the manufacturing cost, the spiral blades are However, the blade may be composed of a plurality of blades divided into a plurality of blades, and the blades may be provided at required intervals in the length direction of the chute.

[Action]

With the above configuration, the dust thrown in from the dust throwing port on each floor falls on the receiving surface of the same phase of the spiral blade on each floor, and is guided by the receiving surface and slides down. Instead, it is conveyed smoothly downward.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS.

The chute 1 is formed by a straight pipe extending straight in the vertical direction, and is provided in a range from the upper floor to the lower floor of the high-rise building B.

The chute 1 is provided with a dust inlet 2 at a position corresponding to each floor and at a predetermined height on each floor of the building, and the inlet 2 is provided with a door 3 that can be opened and closed.

Further, inside the chute 1, spiral blades 4 having a pitch corresponding to each floor height in a range from the upper end to the lower end of the chute 1 are provided.

The spiral blade 4 is installed such that the central portion thereof has no interfering substance such as a mandrel and the outer peripheral edge thereof is fixed to the inner wall of the chute 1. Moreover, the spiral blade 4 is provided so as to start from the height position of the dust input port of each floor to which the half pitch spiral receiving surface corresponds and pass below the dust input port and along the inner peripheral surface of the chute toward the dust input port. ing.

A rotary drum R for collecting dust is connected to the lower end of the chute 1 via a hopper 5. This rotary drum R is provided with a spiral feed blade 6 on its inner peripheral surface, and stores the dust thrown in by being rotated in a compressed state.

In the dust chute having the above-mentioned structure, when dust is thrown in through the charging ports 2 of the chute 1, the dust slides down on the upper surface of the spiral blade 4 and descends. At this time, there is no impact sound because there is no drop of dust, and because the dust slides continuously, the dust does not stay in the middle,
Transported smoothly downward.

FIG. 4 is a perspective view showing how the dust thrown from the dust throwing port 2 falls on the dust receiving surface of the spiral blade 4. Second
It can be easily understood from FIGS. 4 to 4 that the half pitch dust receiving surface of the spiral blade 4 starts from the dust throwing height position of the corresponding floor.

As can be imagined from FIG. 3, the dust receiving surface receives the dust thrown within the fan-shaped angle range facing the throwing port 2,
The spiral surface shown in FIG. 4 guides and smoothly drops it.

In the embodiment, the spiral blade 4 is shown as continuous from the upper end to the lower end of the chute 1, but the invention is not limited to this. For example, a plurality of divided blades may be used as the chute 1. May be provided at a required interval in the length direction. At this time, it is provided at intervals so that impact noise does not matter.

The inclination angle of the spiral blade 4 is preferably set to a relatively large angle so that the spiral blade 4 can surely slip off even if the type of dust changes, and an angle of 60 ° or more is usually suitable.

〔effect〕

As described above, according to the present invention, the spiral blade is provided inside the chute, and the dust is slid off along the receiving surface of the spiral blade, so that the impact noise due to the drop is not generated, and the damper is midway. Since it is continuously dropped without providing a bent portion or the like, there is no concern about clogging with dust, and the installation space is small.

[Brief description of the drawings]

FIG. 1 is a schematic view showing the entire dust chute according to the present invention, FIG. 2 is a partially enlarged sectional view of the same, and FIG.
A sectional view taken along the line III-III in the figure, FIG. 4 is an enlarged perspective view of a main part of the dust chute showing a use state, and FIG. 5 (a).
(B) (c) is a schematic diagram showing a conventional dust chute. 1 ... Shoot, 2 ... Inlet, 4 ... Spiral blade.

Claims (3)

(57) [Claims] 1. A tubular chute that is long in the vertical direction is provided with a plurality of dust inlets at predetermined height positions on each floor of a building, and inside the chute, spiral blades having a pitch corresponding to each floor height are provided. The blade is a dust chute that is installed along the inner surface of the chute, starting from the height of the dust entrance on each floor to which the half pitch spiral receiving surface corresponds and passing below the dust entrance and toward the dust entrance. 2. The dust chute according to claim 1, wherein the spiral blade is continuous from the upper end to the lower end of the chute. 3. The spiral blade is composed of a plurality of blades divided into a plurality of blades, and the blades are provided at required intervals in the lengthwise direction of the chute.
Dust chute described in.