JPH029860Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a filtration type dust collector that filters dust-containing gas using a cylindrical filter cloth with openings at both upper and lower ends.

(Prior Art) A conventional filtration type dust collector has a cylindrical filter cloth with openings at both upper and lower ends stretched between the circular holes of the upper and lower partition plates by fitting and fixing both ends of the filter cloth to the edges of the circular holes. Although it has a simple structure and is easy to replace, it is difficult to apply tension to the filter cloth. For this purpose, one end of the filter cloth is fixed to one partition plate, and a filter cloth mounting tube is provided at the other end of the filter cloth, and the filter cloth attachment tube is attached to the other partition plate so as to be movable up and down. When installing the filter cloth, install a special tool with a spring above the upper partition plate, pull up the filter cloth mounting cylinder until the specified tension is applied to the filter cloth, and fix the set bolt in that position. It was necessary to maintain a predetermined tension on the filter cloth.

(Problem to be solved by the invention) For this reason, in the conventional filter cloth installation work is complicated, and when adjusting the tension to correct the decrease in tension due to the elongation of the filter cloth during use, the above-mentioned method is required. The drawback was that it required complicated work.

(Means for Solving the Problems) The present invention was completed with the aim of solving the above-mentioned conventional problems and creating a filtration type dust collector that makes it easy to attach the filter cloth and adjust the tension. A filtration type dust collector in which a cylindrical filter cloth is stretched between upper and lower partition plates provided in the interior with both ends fitted and fixed to the circular hole of the partition plate and the hole edge of the circular hole of the partition plate,
An auxiliary cylinder divided into a main filter cloth part and a short sub-filter cloth part is fixed to the end part of the filter cloth, and the main filter is connected between the auxiliary cylinder and a support fitting provided on the outside of one of the partition plates. It is characterized by being provided with a tension applying mechanism that applies tension to the fabric portion.

(Example) Next, the present invention will be explained in detail with reference to illustrated examples.

In Fig. 1, reference numeral 1 denotes a cylindrical filter cloth with openings at both upper and lower ends. are fitted and fixed into circular holes 4 and 7, which will be described later. That is, the lower partition plate 3
A plurality of circular holes 4 having a diameter approximately equal to the diameter of the filter cloth 1 are formed through the filter cloth 1 at regular intervals, and the lower end of the filter cloth 1 is connected to a protrusion 5 protruding around the circular holes 4 with an elastic ring. 6
At the same time, a circular hole 7 having a diameter approximately equal to the diameter of the filter cloth 1 is provided in the upper partition plate 2 in correspondence with the circular hole 4, so that the upper end of the filter cloth 1 is fitted and fixed. An elastic ring 9 of a protrusion 8 protruding around the hole 7 is fitted and fixed. A metal auxiliary cylinder 10 is fixed to the inner periphery of the upper end of the filter cloth 1 by a stopper 11 and a fastener 12, and the filter cloth 1 is separated into a long main filter cloth section 1a and a short sub-filter cloth section 1b. A tension applying mechanism 14 for pulling up only the main filter cloth portion 1a of the filter cloth 1 is provided between the auxiliary cylinder 10 and a support fitting 13 installed above the upper partition plate 2. It is being In this embodiment, the tension applying mechanism 14 is a chain, and the tension of the main filter cloth portion 1a can be adjusted by hooking an appropriate link of the chain to the chain engagement notch 15 of the support fitting 13. . On the other hand, in the second embodiment shown in FIG.
The auxiliary filter cloth part 1b is connected and integrated with the upper end of a, while the tension applying mechanism 14 is a combination of a chain and a tension spring. This has the advantage that the filter cloth 1 is less likely to be damaged than the first embodiment shown in FIG. Furthermore, in the third embodiment shown in FIG.
is fixed by sewing, and a tension applying mechanism 14 consisting of a chain that pulls the main filter cloth portion 1a downward is provided between the auxiliary cylinder 10 and a support fitting 13 provided below the lower partition plate 3. There is.

(Function) In this structure, the lower partition plate 3
If dust-containing gas is supplied from below and gas in the clean chamber 17 surrounded by the upper and lower partition plates 2 and 3 is sucked, the dust-containing gas enters the cylindrical filter cloth 1 through the circular hole 4. Although filtration is carried out on the wall surface as in the conventional case, in the present invention, the auxiliary cylinder 10 is fixed near the end of the filter cloth 1, and the auxiliary cylinder 10 and one of the partition plates are connected to each other. The main filter cloth portion 1 of the filter cloth 1 is connected to the supporting metal fitting 13 provided on the outside.
Since the tension applying mechanism 14 that applies tension only to a is provided, the tension applying mechanism 14 is only used when attaching the filter cloth or when performing tension adjustment work to correct a decrease in tension due to elongation of the filter cloth 1 during use. By auxiliary cylinder 10
Tension can be applied to the main filter cloth portion 1a, which is the main portion of the filter cloth 1, simply by pulling the filter cloth 1. Moreover, the filter cloth 1 is divided into the main filter cloth part 1a and the sub-filter cloth part 1b by the auxiliary cylinder 10, and the sub-filter cloth part 1b exists between the auxiliary cylinder 10 and one of the partition plates. Even if the auxiliary cylinder 10 moves due to traction, the seal between the filter cloth 1 and the partition plate is not impaired by the sub-filter cloth portion 1b, and the sub-filter cloth portion 1b also has a filtering function. Because of this, the filtration efficiency is good and the dust-containing gas does not leak into the clean room 17. In addition, in the case where the tension applying mechanism 14 is provided with a tension spring as in the second embodiment, even if the filter cloth 1 is stretched during use, the filter cloth 1 is pulled upward by an amount corresponding to the stretch. The tension of the filter cloths is kept approximately constant, thus preventing damage to the filter cloths due to contact with each other and clogging due to a decrease in cleaning efficiency due to a decrease in tension.

(Effects of the invention) As is clear from the above explanation, the present invention allows for easy installation of the filter cloth and tension adjustment during use, and has a simple structure that allows it to be easily installed in conventional equipment. It has great practical value as it solves the problems of conventional filtering dust collectors, which have a cylindrical filter cloth with openings at both the top and bottom ends fitted into circular holes in the partition plate. be.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the main part showing the first embodiment of the present invention, Fig. 2 is a partially cutaway front view of the main part showing the second embodiment, and Fig. 3 is a partially cutaway front view of the main part showing the second embodiment. FIG. 2 is a partially cutaway front view of a main part showing an embodiment. 1: Filter cloth, 1a: Main filter cloth part, 1b: Sub filter cloth part,
2: Partition plate, 3: Partition plate, 4: Circular hole, 7: Circular hole,
10: Auxiliary cylinder, 13: Supporting metal fittings, 14: Tension applying mechanism.

Claims (1)

[Scope of utility model registration request] Upper and lower partition plates 2 and 3 installed inside the dust collector body
In a filtration type dust collector in which a cylindrical filter cloth 1 is stretched between the circular hole 7 of the partition plate 2 and the hole edge of the circular hole 4 of the partition plate 3 with both ends fitted and fixed, the ends of the filter cloth 1 An auxiliary cylinder 10 divided into a main filter cloth part 1a and a short sub-filter cloth part 1b is fixed to the main filter cloth part 1a, and the main filter is connected between the auxiliary cylinder 10 and a support fitting 13 provided on the outside of one of the partition plates. A filtration type dust collector characterized in that a tension applying mechanism 14 is provided for applying tension to a cloth portion 1a.