JPH02124376U

JPH02124376U -

Info

Publication number: JPH02124376U
Application number: JP3279989U
Authority: JP
Priority date: 1989-03-23
Filing date: 1989-03-23
Publication date: 1990-10-12

Description

[Brief explanation of drawings]

第１図は本願考案の実施例を示す正面図、第２
図イ，ロ，ハは本願考案の作用を示す側面断面図
、第３図イ，ロは別の実施例を示す全体の正面図
と側面断面図、第４図イ，ロ，ハ，ニ，ホはさら
にそれぞれ別の実施例を示す側面断面図、第５図
は従来の技術を示す側面断面図。１……可動有孔板、２……固定有孔板、３……
可動有孔板の貫通孔、４……固定有孔板の貫通孔
。 Fig. 1 is a front view showing an embodiment of the present invention;
Figures A, B, and C are side sectional views showing the function of the present invention, Figures 3 A and B are overall front views and side sectional views showing another embodiment, and Figures 4 A, B, C, D, FIG. 5 is a side sectional view showing another embodiment, and FIG. 5 is a side sectional view showing a conventional technique. 1...Movable perforated plate, 2...Fixed perforated plate, 3...
Through-hole in the movable perforated plate, 4... Through-hole in the fixed perforated plate.

Claims

[Scope of utility model registration request]

Two perforated plates perpendicular to the flow direction of the fluid are interposed in the conduit and are placed in close contact with each other, one of which is fixed and the remaining one is slidably movable with respect to the other. In a movable orifice valve that variably adjusts head loss depending on the communication range of the circular holes, the two perforated plates are provided with a large number of through holes with a common regularity, and each through hole is A movable orifice valve characterized in that each of the hole diameters is not smaller than the hole diameter of the adjacent through-holes closer to the outer periphery, and the hole diameter of the central through-hole is larger than the diameter of the through-hole at the outermost periphery.