JPH0721208Y2 - Concatenated prefilter - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a plurality of pre-filters which are connected to a plurality of pre-filters constituting a filter unit device used for an exhaust system of a nuclear power plant, for maintenance, inspection or replacement of filter media. the prefilter is relates to the connection pre-fill data that was easily pulled out as a unit.

[0002]

2. Description of the Related Art A conventional prefilter is shown in FIGS.
The outer frames 33, 34 of the pre-filters 31, 32 are
Of the side plates 35 and 36 adjacent to each other, engaging metal fittings 39 and 40 having engaging tongues 37 and 38 are fixed to face each other, and the engaging tongues 37 and 38 are mutually fixed. The pre-filters 31 and 32 are connected in series by being engaged with each other, and are integrally housed in the pre-filter housing frame 42 having the concave groove 41, and face the front side when the filter medium 43 needs to be replaced or the like. The pre-filters 31 and 32 are configured to be pulled out as a unit by holding the grip 45 attached to the outer side plate 44 of the outer frame 33 of the pre-filter 31.

[0003]

An invention is, however, since the conventional connection prefill data must attach the engagement alloy tool 39, 40 integrally with the outer frame 33, 34 of each pre-filter 31 and 32, correspondingly prepared There are problems that the number of processes is increased, the manufacturing process is troublesome, and the cost is high.

The present invention has been made to solve the above-mentioned problems, in which the outer frame of the prefilter is not processed,
And simply seeks to provide a coupling prefill data for a plurality of pre-filter can be connected in series.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a single clip composed of a leaf spring having a first pressing piece continuously provided on a first folding curved surface is fixed to one side of a back surface of a substrate, and a second folding curved surface is provided. A double clip composed of a leaf spring having a second pressing piece continuously connected to the above and a third pressing piece continuously connected to the third folding curved surface at a right angle position, is fixed to the other side of the back surface of the substrate, and the connecting metal fitting is attached. And the third pressing piece of the double clip of the connecting fitting is projected forward of the left frame plate having a concave cross-section of the outer frame of the pre-filter located on the front side among the pre-filters adjacent to each other in series. The second pressing piece of the double clip is pressed and sandwiched by the front protruding piece of the lower frame plate having a concave cross section of the outer frame of the pre-filter located on the front side, and the first pressing of the single clip is performed. Pre-position the piece on the front side By employing the means of sandwich pressed forward projecting piece of the lower frame plate having a recessed cross section of the outer frame of data, and solves the above problems.

[0006]

According to the present invention having the above structure, the third pressing piece of the double clip is pressed and sandwiched by the front protruding piece of the left frame plate of the pre-filter located on the front side by sliding the connecting metal fitting laterally. Further, by sliding the connecting metal fitting downward while sandwiching the third pressing piece between the front protruding pieces, the first pressing piece of the single clip protrudes forward of the lower frame plate of the pre-filter located on the front side. The second pressing piece of the double clip is pressed and sandwiched by the front protruding piece of the lower frame plate of the prefilter located on the front side, and the prefilters adjacent to each other are connected in series.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. Top, bottom, left and right frame plates 1A, 1B having front and rear projecting pieces 1a, 1b and having a concave cross section are provided. 1C, 1D
Upper and lower, left, and right frames that form the outer frame 2 by joining and fixing each of them in a rectangular shape, and install the filter medium 3 in the outer frame 2 and configure the outer frame 2 on the downstream side surface of the filter medium 3. Board 1A, 1
A grid-like reinforcing member 4 is fixed to each of the rear protruding pieces 1b of B, 1C, and 1D, a wire net 5 is arranged between the reinforcing member 4 and the filter member 3, and an outer frame is provided on the upstream side surface of the filter member 3. A prefilter 7 is formed by attaching a lattice-shaped filter material replacement holding metal 6 to each of the front projecting pieces 1a of the upper, lower, left, and right frame plates 1A, 1B, 1C, and 1D that form part 2.

Then, the pre-filter 7 having the above-mentioned structure
A plurality of connecting metal fittings 8 are connected in series each time they are adjacent to each other. In the connecting metal fitting 8, a single clip 10 made of a leaf spring is fixed to one side of the back surface of a rectangular substrate 9 and a leaf spring is attached to the other side. A double clip 11 made of is fixedly formed.

In the single clip 10, the central portion of the rectangular leaf spring is bent at a right angle to form a first bent curved surface 12, and the upper part of the first bent curved surface 12 is fixed vertically to the substrate 9. 1 fixing piece 13, and further, a first pressing piece 14 bent obliquely downward is continuously provided below the first folding curved surface 12, and
The lower end surface of the first pressing piece 14 is formed by continuously connecting a first guide piece 15 bent slightly upward, and the first fixing piece 13 of the single clip 10 has a first fixing piece 13 bolted or the like. It is fixed to 9.

The double clip 11 is formed by bending the central portion of the L-shaped leaf spring in the vertical direction at a right angle to form the second folding curved surface 1.
6 and the upper part of the second folding curved surface 16 is a vertical second fixing piece 17 fixed to the substrate 9, and the second pressing piece 18 is bent below the second folding curved surface 16 in an obliquely downward direction. And a second guide piece 19 which is bent upwards is connected to the lower end surface of the second pressing piece 18 while the horizontal center portion of the L-shaped leaf spring is bent at a right angle. To form a third folding curved surface 20, and a third pressing piece 21 bent obliquely downward is continuously provided outside the third folding curved surface 20, and the outer end surface of the third pressing piece 21 is slightly upward. The bent third guide piece 22 is formed continuously, and the double clip 11 has the second fixing piece 17 fixed to the substrate 9 by means of bolts or the like. In the figure, reference numeral 23 denotes a handle attached to the left frame plate 1C of the prefilter 7 located on the front side, but the handle can be pulled out without attaching the handle.

Next, the operation of the embodiment will be described. Although a plurality of pre-filters 7 can be connected in series by using the connecting fitting 8, a case where two pre-filters are connected in series will be described for convenience of explanation.

Of the pre-filter 7a located on the front side and the pre-filter 7b located on the front side, the front facing the upstream side of the left frame plate 1C on the front side of the outer frame 2 of the pre-filter 7b located on the front side. The fitting 8 is slid laterally into the protruding piece 1a (FIG. 5), the third pressing piece 21 of the double clip 11 is press-fitted using the third guide piece 22 as a guide, and the third folding curved surface 20 The front edge of the front protruding piece 1a is brought into contact with the front protruding piece 1a, and the front protruding piece 1a is pressed and sandwiched by the third pressing piece 21 (FIG. 6). Then, after that, the pre-filter 7a located on the front side is brought into contact with the pre-filter 7b in series, and the joint fitting 8 is slid downward (FIG. 7), and the lower frame plate of each of the pre-filters 7a, 7b. On the front protruding piece 1a facing the upstream side of 1B, the first pressing piece 14 of the single clip 10 and the second pressing piece 18 of the double clip 11 of the joining fitting 8 are provided with the first guide piece 15 and the second guide piece 19, respectively. As a guide, the upper end edges of the front protruding pieces 1a are brought into contact with the first folding curved surface 12 and the second folding curved surface 16, and the front protruding pieces 1a are pushed into the first pressing piece 14 and the second pressing piece 18 respectively. The pre-filters 7a and 7b are connected by pressing and sandwiching with each other (FIG. 8).

Then, each connected pre-filter 7a,
7b in the pre-filter storage frame 25 having the groove 24,
By inserting and pressing the concave groove 24 as a guide,
It moves to the other side and is stored. On the other hand, when it is necessary to replace the filter medium 3 or the like, the front end of the front protruding piece 1a of the left frame plate 1C of the pre-filter 7b located on the front side is pulled by holding the handle 23 of the pre-filter 7a located on the front side and pulling it toward you. At the edge, the third folding curved surface 2 of the third pressing piece 21 of the connecting fitting 8
Since 0 is in contact, the pre-filter 7b can be pulled out together with the pre-filter 7a.

[0014]

Since the present invention is as described above, the connecting metal fitting is not integrally fixed to the prefilter but is formed as a separate member, so that the prefilter can be manufactured easily.
Of course, the method of attaching the connecting metal fittings to the pre-filter is also to simply slide it laterally, then slide it downwards, and press the front projecting piece of the frame plate that constitutes the pre-filter with each pressing piece to press them together. Since adjacent pre-filters can be connected to each other, the operation is not troublesome, and the connecting metal fittings can be removed very easily.

[Brief description of drawings]

1 is a perspective view of the present invention connected prefill data.

2 is a front view of cut away portions of the prefilter definitive to the present invention connected prefill data.

3 is an enlarged longitudinal sectional view of the prefilter definitive to the present invention connected prefill data.

4 is a back side perspective view of a connecting fitting for use in the present invention connected prefill data.

[5] Oite to the present invention connected prefilled data is a perspective view of a main part which you are installing the left frame plate prefilter positioned the connecting fitting to the other party side.

[6] Oite to the present invention connected prefilled data is a perspective view of a main part attached to the left frame plate prefilter positioned the connecting fitting to the other party side.

[7] Oite to the present invention connected prefilled data is a perspective view of a main part which attempt to install the lower frame plate prefilter Neighboring are mutually connecting fitting.

[8] Oite to the present invention connected prefilled data is a perspective view of a main part attached to the lower frame plate prefilter Neighboring are mutually connecting fitting.

9 is an enlarged cross-sectional view taken along the line AA of FIG.

10 is an enlarged cross-sectional view taken along the line BB of FIG.

11 is an enlarged cross-sectional view taken along the line CC of FIG.

12 is a front view of the prefilter in the prior consolidated prefill data.

[13] Oite to conventional coupling prefill data is a plan view showing a state in which connecting two prefilter.

[14] pre-fill in a conventional consolidated pre-fill data
It is a longitudinal sectional view of the data.

Claims (1)

[Scope of utility model registration request] 1. A second pressing piece, which is fixed to one side of the back surface of a substrate and has a single clip made of a leaf spring provided with a first pressing piece that is continuously provided on the first folding curved surface, and that is continuously provided on the second folding curved surface. And a third pressing piece connected to the third folding curved surface at a right angle to each other, a double clip made of a leaf spring is fixed to the other side of the back surface of the substrate to form a connecting metal fitting, and the connecting metal fitting is formed. Of the prefilters adjacent to each other in series, the third pressing piece of the double clip is pressed and sandwiched by the front protruding piece of the left frame plate having the concave cross section of the outer frame of the prefilter located on the front side, The second pressing piece of the clip is pressed and sandwiched by the front protruding piece of the lower frame plate having a concave cross section of the outer frame of the pre-filter located on the front side, and the first pressing piece of the single clip is located on the front side. The outer frame of the filter has a concave cross section Consolidated pre-fill data composed by sandwiching pressed forward projecting piece of the lower frame plate.