JPS5942095Y2 - Improvement of temporary strainer - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a temporary strainer.

A temporary strainer is generally installed inside a short pipe that is inserted into a pipe, used during a test run of a newly installed pipe, and then removed after the test run is completed.

In this case, if a temporary strainer with a large diameter is used, the passage area must be large, and the overall length will of course be quite long. Since the strainer is supported by a support, large vibrations may occur depending on the type of fluid or the flow rate, and as a result, repeated stress may concentrate on the support portion of the strainer and cause it to break.

In order to solve the above-mentioned problems with a simple and inexpensive structure, the present invention proposes a temporary strainer that also has a length-adjustable support stay that contacts the inside of the short pipe on the small-diameter end side of the strainer. .

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a conventional general temporary strainer, in which a hollow conical filter cylinder a and a support ring are welded and fixed by a welded part C.

Figure 2 shows a temporary strainer that also has a support stay in contact with the inside of the short pipe. 1 is a short pipe housed inside the truncated conical temporary strainer, 2 is a flange of the short pipe, and 3 is a strainer support ring, which is a short pipe. It is fixed by the pipe flange 2 and the main pipe flange (not shown).

4 is a handle, and 5 is a hollow truncated conical filter cylinder, which is welded to the support ring 3 by a welded part 6.

Further, holes I for fluid passage are bored in a certain arrangement on the entire surface, and a net screen 8 is stretched all over the inner surface of the filter cylinder 5, and the net screen 8 is covered with a band 9. The inner surface is fixed to the filter cylinder 5 by a bottom plate 10.

The bottom plate 10 is welded to the filter tube 5, has holes T formed therein like the filter tube 5, and has a net screen 8 disposed on its inner surface.

Reference numeral 11 denotes a stay for supporting the small diameter end of the filter cylinder, which is welded to the bottom plate 10, but it is not limited to just welding, and may be integrally formed with the bottom plate 10.

It is said that the same effect can be obtained even in the hollow conical filter cylinder shown in Fig. 1 by providing the aforementioned support stay at or near the apex of the cone! not.

FIG. 3 shows the distal portion of FIG. 2 in more detail.

As shown in Fig. 1, a general temporary strainer is not equipped with a stay 11 for supporting the small diameter end of the filter cylinder, so when vibration occurs due to the fluid, stress is repeatedly generated in the welded part C, resulting in A situation often occurs in which a break occurs in a short period of time, and scale or other foreign matter that is not filtered due to a short circuit from the break passes through the strainer, which poses a risk of causing major damage to the piping and equipment.

However, by arranging a plurality of filter tube small diameter end support stays 11 so as to be in contact with the inner surface of the short tube 1, vibration can be suppressed and breakage of the welded part 6 can be effectively prevented with a simple and easy configuration. .

FIG. 4 shows an embodiment equipped with a length adjustment mechanism for the stay 11 for supporting the small diameter end of the filter cylinder of the present invention.

When installing a temporary strainer, if the stay 11 is configured so as to be in contact with the inner surface of the short tube 1, it may be difficult to insert it into the short tube. Screw the bolt 13 into the
If the strainer is fixed with a nut 14, the strainer 13 can be pulled up after the strainer is inserted into the short pipe, and fixed in the short pipe. Vibration of the strainer can be more effectively prevented and the strainer can be easily installed.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a conventional general temporary strainer, Fig. 2 is a cross-sectional view showing a temporary strainer that also has five support stays in contact with the inside of the short tube, Fig. 3 is a right side view of Fig. 2, FIG. 4 shows an embodiment of the present invention equipped with a length adjustment mechanism. 3... Strainer support ring, 5... Filter cylinder, 6...
Welded part, 10...bottom, 11...stay 12...
・Pipe, 13...Bolt, 14...Nut.

Claims (1)

[Scope of utility model registration request] The large diameter end of a hollow truncated conical or hollow conical filter tube with a crown at the bottom is fixed to the strainer support ring 3 to form a filter tube 5.
In the temporary strainer which also has a plurality of support stays 11 at or near the small diameter end of the filtration tube 5, one end is fixed to the bottom plate 10 at the small diameter end of the filter tube 5, and the other end is provided with an adjustment bolt 13 and a screw that can be moved back and forth. A temporary strainer comprising a length-adjustable support stay composed of a pipe 12 with a matching internal thread and a locking nut 14 screwed onto the adjustment bolt.