JPS6140718Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a double damper suitable for general waste crushing, dust collectors in sorting treatment facilities, collectors in pneumatic transportation equipment, and the like.

Conventionally, in dust collectors such as cyclones and bag filters, as shown in Figures 1 to 3,
The discharge chute 2 of the dust collector main body 1 is covered by a duct 3, and the discharge chute 4 of the duct 3 is covered by a duct 5, and the discharge ports of each discharge chute 2, 4 are formed into upper guide frames 6, 7, Lower guide frames 8 and 9 having the same shape as the guide frames 6 and 7 are arranged respectively, and dampers 12 and 13 operated by cylinders 10 and 11 are slid between the upper and lower guide frames 6 and 8 and 7 and 9, respectively. A double damper with two stages, upper and lower, is used to guide the vehicle.

To use the double damper in this type of dust collector, first open the upper damper 12 and remove the vinyl piece.
The garbage 14 such as tape pieces and thread waste is allowed to fall into the duct 13, and after the damper 12 is closed, the lower damper 13 is opened and the garbage 14 is discharged by dropping into a trash can or the like. It is necessary to maintain airtightness on the dust collector side by relatively opening and closing.

However, especially regarding the damper structure at the upper stage position, the lower guide frame 8 has the same shape as the upper guide frame 6 as shown in FIG.
a, 8b and the horizontal beams 8c, 8d form a rectangular frame shape, so that as shown in FIG. The damper 12 often gets stuck between the
3 opened, airtightness could not be maintained, causing problems such as a drop in collection efficiency.

This idea was made in view of the above-mentioned conventional problems, and the position of the closed side cross beam of the lower guide frame in the upper stage position is moved to the open side compared to the position of the closed side cross beam of the chute and upper guide frame. In addition to forming a step by retreating the beam, a cutout is formed in the closed horizontal beam between the pair of vertical beams to prevent dirt from getting stuck in the beam.

Hereinafter, embodiments of this invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 4 and 5, the lower guide frame 16 at the upper stage is made of a round pipe in an inverted L shape, and the open ends of the vertical beams 16a, 16b are extended to fit inside the duct 3. At the same time, the ends of closed side horizontal beams 16c, 16c formed by bending the closed side ends of the vertical beams 16a, 16b outward are fixed to the inner surface of the duct 3.

The positions of the closed side lateral beams 16c, 16c are set back toward the open side from the position of the closed side lateral beam portion 6c of the chute/upper guide frame 6 to form a step t.

In addition, since there is no horizontal beam between the horizontal beams 16c, 16c, a missing portion 17 is formed.

With the above configuration, when the damper 12 is open, the space between the vertical beams 16a and 16b of the lower guide frame 16 is a missing part 17 where there is no closed side horizontal beam as in the conventional case, so the dirt 14 falls smoothly to the duct 5 side without getting caught.

Next, even if the dust 14 falls just before the damper 12 is closed, the dust 14 falls without being caught by the missing part 17, and does not get stuck between the upper guide frame 6 and become clogged. Note that if the pocket portion 18 between the damper 12 and the inner surface of the duct 3 is set large, the dust 14 will fall more smoothly.

As for the lower guide frame 16, a round pipe is more advantageous because it does not catch the garbage 14, and for the same reason, as shown in FIG. 6, an upper guide frame 6 made of pipe is fixed to the lower part of the chute 2. Good too.

As described above, according to this invention, a step is formed between the upper guide frame and the lower guide frame of the damper at the upper stage position, and a missing part is formed in the lower guide frame, so that the damper and each guide frame are This prevents dirt from getting stuck between the damper and the damper, and the damper can always be completely sealed, eliminating problems such as reduced collection efficiency.

[Brief explanation of the drawing]

Figure 1 is a sectional view of a conventional double damper, Figure 2 is a bottom view of the damper in the upper position, Figure 3 is a sectional view of the damper showing a clogged state, and Figure 4 is the damper in the upper position according to this invention. FIG. 5 is a sectional view of the damper showing a dust-clogged state, and FIG. 6 is a sectional view of a modified damper. 1...Dust collector body, 2, 4...Discharge chute,
3, 5...Duct, 6...Upper guide frame,
12, 13...Dumper, 14...Garbage, 16...
Lower guide frame, 16a, 16b...vertical beam, 16c...horizontal beam, 17...missing part, t...
…Step.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A dumper that is slidably guided between a chute and an upper guide frame and a lower guide frame is installed in two stages, upper and lower, in a garbage discharge duct such as vinyl pieces, tape pieces, thread waste, etc. In the double damper installed in A double damper characterized in that a missing portion is formed in the closed side horizontal beam between the vertical beams. (2) The double damper according to claim (1), wherein the upper guide frame and the lower guide frame are formed of round pipes.