JPH0243463Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a dust collector using filter paper, and in particular, the invention relates to a dust collector using filter paper. It has a structure with a large capacity that can be used.

(Prior art) There are two types of dust collectors: those that use filter paper and those that use dust tubes filled with glass fiber or the like instead of filter paper, but they are usually simple in structure and have a large capacity to operate. The type that uses filter paper is considered more common.

As shown in Fig. 5, dust collectors using filter paper include those in which a circular filter paper is sandwiched between a suction nozzle and a filter paper holder, and as shown in Fig. 6, one end is attached to the base end of the suction nozzle. Some methods cover the mouth of an open container-shaped filter paper holder and cover it with a filter paper holder, but in either case, the suction flow rate is
There was a demand for a small, high-capacity device with a speed of about 10 to 20/min.

(Problems to be solved by the invention) A dust collector that uses filter paper has the following features: the filter paper can be easily attached and removed, there is no air leakage from the filter paper installation part, and there is a measurement hole installed in the flue or duct. (usually 100 mmφ), and for this reason, circular filter paper or container-shaped filter paper that fits the filter paper holder is used. It has been difficult to use a rectangular flat filter paper (8" x 10") attached to a large-capacity sampler used for sample collection as a dust collector.

(Means for solving the problem) On the other hand, the above rectangular flat plate filter paper 8" x 10"
Instead of remaining flat, it can be curved into a cylindrical shape and housed in the dust collector main body with its outer circumferential surface held by a filter paper holder with air permeability. The four peripheries can be securely clamped and held by the same means as filter paper, and the dust collector can be made smaller. This idea was developed focusing on the above points.

(Example of the invention) An example of the invention will be explained with reference to the drawings.
In FIGS. 1 and 3, 1 is a main cylinder part, at the tip of which a suction nozzle 2 is rotatably attached via a tightening ring 3 and a packing 4, and at the rear end is a connecting pipe connected to a suction pump. 5 is attached by screwing.

Inside this main cylinder part 1, a filter paper holder 6 consisting of a breathable cylinder made of sintered metal or the like has its tip connected to the gasket 4, and its rear end connected to the connection pipe attachment hole in the main cylinder part 1. The partition plate 8 is housed in contact with the front surface of a partition plate 8 provided in the front circumferential surface via a ventilation hole 7.
As is clear from FIGS. 3 and 2, this filter paper holder 6 is made as an upper and lower halves, and can be opened and closed via a hinge 9 provided at the joint and a removable fastener 10. The locking pieces 11, 11 are formed on the outer circumferential surface and protrude upward and downward.
is engaged with a guide groove 12 provided on the inner surface of the main cylindrical portion 1, and is concentrically held and fixed within the main cylindrical portion 1 (see FIG. 2).

Next, reference numeral 13 is a core member for attaching and holding the filter paper a on the inner surface of the filter paper holder 6, and as shown in FIG. It is being 16 is rear circular ring 1
This is an O-ring fitted into 4.

(Operations and Effects) This invention has the above-mentioned structure, and in order to use it, as shown in FIG. 15 After wrapping it so that it overlaps the outer surface,
After this is housed in a filter paper holder 6 which is open to the left and right in advance, the filter paper holder 6 is closed and the filter paper a is fixed in the filter paper holder 6, and then the filter paper holder 6 is moved to the main cylinder part 1 from which the suction nozzle 2 has been removed in advance. The locking pieces 11, 11 are engaged with the guide grooves 12, 12, and then inserted, and then the suction nozzle 2 is attached to the tip of the main cylinder part 1 via the tightening ring 3, and the suction nozzle 2 is integrated. be.

The dust collector assembled with the filter paper a in this way is installed in the required flue or duct with the suction nozzle 2 facing the gas flow, and the connecting pipe 5
is connected to an external suction pump, and a large volume of sample gas can be collected from the circumferential surface of the filter paper holder 6 through the vent 7, compared to the conventional suction flow rate of 10.
~20/min vs. several 100/min~1
The flow rate can be significantly increased to m ³ /min. Note that although the partition plate 8 that closes the rear end of the filter paper holder 6 is provided on the main cylinder portion 1 in the above embodiment, it may be provided integrally with the rear end of the core member 13 in advance. Of course. In addition, an engaging protrusion is provided at a suitable position on the core member 13, and the engaging protrusion facilitates temporary fixing of the filter paper a and securely fixes the core member 13 in the filter paper holder 6. You can.

In this case, the existing flat filter paper can be used as the filter paper a as described above, and it can also be used for analysis of metal components, etc., which is extremely efficient.

[Brief explanation of the drawing]

Figure 1 is a side sectional view, Figure 2 is a front sectional view at the position shown in Figure 1, Figure 3 is an exploded perspective view of the whole, Figure 4 is a perspective view showing the order in which filter paper is attached to the holder, and Figure 5 is a perspective view showing the order in which filter paper is attached to the holder. 6 are side sectional views showing examples of conventional dust collectors. DESCRIPTION OF SYMBOLS 1... Main cylinder part, 2... Suction nozzle, 3... Tightening ring, 5... Connecting pipe, 6... Filter paper holder, 9...
... Hinge, 10 ... Tightening fitting, 11 ... Locking piece, 1
2... Guide groove, 13... Core member, 14... Front and rear circular rings, 15... Shows a continuous rod.

Claims (1)

[Scope of utility model registration request] A filter paper holder 6 made of an air-permeable cylinder is accommodated and held inside a straight cylindrical main body cylindrical portion 1 having a suction nozzle 2 at the tip and a connecting pipe 5 connected to a suction pump at the rear end. A core member 13 in the form of a bone frame, in which the front and rear rings 14, 14 on which the required flat filter paper a is to be wound in advance, are connected to each other by a continuous rod 15, is inserted, and the rear end of the filter paper holder 6 is closed. Dust collector.