JPS5849454A - Dust precipitator - Google Patents

Abstract

PURPOSE:To decrease pressure drop by providing a vane for inducing swirling flow in a duct, providing a dust collecting port on the side wall of the duct and connecting the other end thereof to the side wall of a dust collecting pipe in a tangential direction. CONSTITUTION:A dust collecting port 3 is disposed tangentially with respect to a circular duct 1 to permit smooth inflow of dust and is disposed tangentially with respect to a dust collecting pipe 4 as well to prevent the dust once flowed into the pipe 4 from returning again into the duct 1. A vane 2 is provided in the duct 1 to induce swirling flow in the duct.

Description

[Detailed description of the invention] Conventional dust collector using inertial force [[Collision type.

There are types such as reversal type and cyclone type, but both require a sudden change of direction of gas containing dust, resulting in high pressure loss, and require a complicated housing and a considerable amount of installation space. 1. For example, when additionally installing a dust collector for exhaust gas in an existing furnace, there are problems such as requiring a considerable amount of modification to the existing equipment.

The present invention (a) is accompanied by a decline in the quality of industrial boiler fuel.

The dust concentration in the exhaust gas is slightly high! To deal with this, the present invention was invented with the purpose of developing a simple dust collector with low pressure loss, even if the dust removal performance is low. In addition to providing a g' for turning the circular duct, a dust collection port for taking out the dust in the tangential direction is provided on the side wall of the duct, and a dust collection pipe with a circular cross section is provided at the other end. Regarding the dust collector connected tangentially to the side wall, the centrifugal force caused by the swirling flow of gas is used to collect dust, but the cyclone does not shoulder the inverted part of the gas, and the It has a dust collection effect on regular pipes.Since it is a type, it does not take up much space for installation.
We aim to provide a dust collector with a % characteristic, including boilers,
It can also be applied to exhaust gas dust collectors for various other types of combustion and incinerators.

An embodiment of the dust collector of the present invention will be described with reference to FIGS. 1 to 3. Fig. 1 σ is a longitudinal cross-sectional view of an embodiment of the dust collector of the present invention, Fig. 2 is a horizontal cross-sectional view thereof, and Fig. 5 is a perspective view of the cleaner.

1. A duct with a circular cross section, 2. A duct with σ blades, not necessarily solid footed wings, and 3. A dust collection port is installed on the side wall of the duct 1 to take out dust in a tangential direction.

4 rj A dust collecting pipe with a circular cross section connecting the other ends of the dust collecting port 3 in a tangential direction, 5 the dust collecting port 3 and the dust collecting pipe 4 VC indicate a can cleaner.

The operation of the present invention will be explained. In FIG. 1, the gas containing dust enters the duct 1VCR, which has a circular cross section as indicated by the dark line arrow, and is created in the blade 2 to give a swirling flow as indicated by the solid line in FIG. The dust contained in the gas is gradually pushed against the wall of the circular duct 1 by the centrifugal force caused by this rotation R, and the dust that reaches the wall is moved by the dotted line in Figures 1 and 2. The dust passes through the dust collection port 3 and is collected in the dust collection pipe 4. The dust collection port 3 is arranged tangentially to the circular duct 1 as shown in Figure 2, so that fine dust can flow in smoothly, and power is also distributed tangentially to the dust collection pipe 4VC once. It is designed to prevent the dust from flowing into the dust collecting pipe 4 and returning to the circular duct (IK). If the dust has a strong adhesive property, Krr, dust collection port 3 and dust collection pipe 4
There is a concern that scaling may occur and block the passageway, resulting in a drop in performance, so if this is not possible, a cleaning machine 5 is provided to perform appropriate cleaning. Place the device shown in Figure 1 on the upstream side of the gas flow.

If necessary, clean the inside of the dust collection port 3 and dust collection pipe 4 by moving it up and down as shown by the arrows in FIG. The dust collected in the dust collector 1i#4 is treated with Vc! from the lower end of the pipe as shown by the dotted arrow in Figure 1. Served. Lower discharge of dust collection pipe 4g! It is advisable to install a rotary pulp or the like when there is a risk of gas leakage or air inflow.

The present invention has the above-described 91-order effect.

(Re) If the existing duct is circular, use it as a circular duct to install wings and dust collection ports.

It can be easily modified by simply installing a dust collection pipe and a cleaning at if necessary.

(2) If the existing duct is rectangular, if it is modified to a circular shape, the same thing as in (1) can be said, so no special installation space is required.

(3) The structure is simple and inexpensive.

(4) Regardless of whether the duct is new or existing, if the duct part is not long enough to install this device, use the T-duct. It's advantageous.

(5) In the gas flow section of this device, there is no gas reversal part like that found in cyclones, and there is no abrupt gas direction change seen in the one-liter collision type and reversal type, so the gas flow is smooth. with low pressure loss.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of the dust collector of the present invention on the -*flow side.
Figure 2 shows a cross-sectional view of the cleaner, and Figure 3 shows a perspective view of the cleaner. 1... Circular duct, 2... Wings, 5...
...Dust collection port. 4... Dust collection pipe, 5... Cleaning machine. 71 Figure ↓ No. 21 ¥ I Sai 3 Sen 285-

Claims (1)

[Claims] An intersecting AT that causes a swirling flow in a duct with a circular cross section.
When provided, a dust collection port is provided on the side wall of the duct to take out the dust in a tangential direction, and the other end is connected tangentially to the side wall of a circular dust collection pipe. Dust collector.