Yoshino Gypsum Co., Ltd.

Yuichi Hirooka

Kenichi Hashikura

Masaru Yoshida

Seigo Ishibashi

Wataru Nakamura

Takahide Yamasato

Hiroyuki Someno

Satoru Miura

Satoru Sohka Plant Yoshino Gypsum Co Miura

An apparatus for inspecting plate-like bodies to inspect a side surface of a plate-like body with sheeted coating materials on a top side and bottom side of the plate-like body, is provided. The apparatus includes at least one light emitting unit configured to irradiate the side surface of the plate-like body with light. The apparatus includes at least one light receiving unit configured to receive light reflected with respect to the side surface of the plate-like body. The apparatus includes a conveying unit configured to move at least one among the light emitting unit and the plate-like body and to vary a position of the light on the side surface of the plate-like body, emitted by the light emitting unit. The apparatus includes a determining unit configured to determine whether the side surface of the plate-like body has a defect, by using the light emitted by the light emitting unit, upon occurrence of a condition under which the conveying unit varies the position of the light, on the side surface of the plate-like body, emitted by the light emitting unit.

Apparatus for inspecting plate-like bodies

A sampling apparatus is provided, which includes a pressing-up unit configured to press up a sheet piece that is being conveyed by a conveying unit, from a lower side of a conveyance course of the sheet piece to above the conveyance course; and

Sampling apparatus, sheet member manufacturing apparatus, and gypsum building material manufacturing apparatus

Provided is a gypsum-based board producing apparatus including: a mixer configured to prepare a gypsum slurry; a foaming apparatus; and a pump configured to convey foam generated by the foaming apparatus to the mixer, wherein the pump is a positive displacement pump.

Gypsum-based board material producing apparatus

Labor saving and automatization of cleaning work of a conveyance face for articles or materials are intended to reliably and quickly execute the cleaning work. A cleaning apparatus has a cleaning implement () located on the upper side of a conveyance element (R). The cleaning implement includes a cleaning face () to be in contact with a conveyance face (S). The cleaning apparatus also has a traction device () which applies a tractive force (T) to the cleaning implement, in a direction (E) opposite to a conveyance direction (D) of a conveyance passage. The cleaning implement has a weight (P) for keeping the cleaning face in contact with the conveyance element in operation of the conveyor device, and cleans the conveyance face by means of contact and separation of the cleaning face and the conveyance face, and relative displacement therebetween (V, V, V).

Device and method for cleaning conveying surface

The present invention provides a mixer and a mixing method which enable stable supply of slurry at a high flow rate with foam being uniformly mixed therein, and which enable reduction in consumption of foam to be fed to the slurry. The mixer () has a housing (), a rotary disc (), a slurry outlet port (), a slurry delivery conduit () and a hollow connector section (). A foam feeding port () is disposed in a predetermined position of an annular wall or the hollow connector section. The foam feeding port feeds the foam to the slurry, immediately before the slurry enters the slurry outlet port, or feeds the foam to the slurry in the hollow connector section. The slurry and the foam mix with each other at the slurry outlet port or on its downstream side. The foam is not substantially subjected to agitation impact of the mixer and a quantity of loss of the foam is reduced. The foam is uniformly mixed with the slurry even when the flow rate of slurry is increased, and therefore, the production rate of gypsum boards can be increased.

Mixer and mixing method for producing gypsum slurry

A mixer,comprises a disc,having peripheral edge,, which is formed in a circular profile concentric with inner circumferential surface,of annular outer wall,lower pins,provided with rear bulged portions,extend backward of the rotational direction R; and upper pins,provided with front bulged portion,&prime; which extends forward of the rotational direction. A disc without a toothed formation on its peripheral edge zone can prevent the slurry from depositing on the outer periphery of the disc. Front and rear bulged portions,occupy a rearward area of the lower pin and a forward area of the upper pin so as not to provide retentive regions for the slurry, which might otherwise have caused a vortex or turbulent flow of the slurry. Accordingly, the deposition of slurry on the lower and upper pins can be prevented from occurring.

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Tokyo, Japan

Yuichi Hirooka