JPH0481973U

JPH0481973U -

Info

Publication number: JPH0481973U
Application number: JP12450390U
Authority: JP
Priority date: 1990-11-27
Filing date: 1990-11-27
Publication date: 1992-07-16

Description

[Brief explanation of the drawing]

第１図〜第５図は本考案の一実施例を示す図で
、第１図は全体構成を示すもので一部に第２図の
−線による断面を図示した図、第２図は平面
図、第３図および第４図はスリツパーデツプ式の
前処理タンクに適用された様子を示す図、第５図
は変形例を示す図である。第６図は従来のシヤツ
ター保温方式を説明するための図、第７図は従来
の発泡スチロール球利用保温方式を説明するため
の図である。１……タンク本体、２……タンク本体の上縁端
、１０……保温装置、１１……蛇腹状伸縮体、１
２……蛇腹状伸縮体の基端部、１３……蛇腹状伸
縮体の先端部、２１……給排手段。 Figures 1 to 5 are diagrams showing an embodiment of the present invention, with Figure 1 showing the overall configuration, a part of which is a cross-sectional view taken along the - line in Figure 2, and Figure 2 being a plan view. 3 and 4 are diagrams showing how the present invention is applied to a slipper-dip type pretreatment tank, and FIG. 5 is a diagram showing a modified example. FIG. 6 is a diagram for explaining a conventional shutter heat retention system, and FIG. 7 is a diagram for explaining a conventional heat retention system using expanded polystyrene balls. DESCRIPTION OF SYMBOLS 1...tank body, 2... upper edge of tank body, 10... heat retention device, 11... bellows-like elastic body, 1
2... Proximal end of the bellows-like expandable body, 13... Tip end of the bellows-like expandable body, 21... Supply/discharge means.

Claims

[Scope of utility model registration request]

A bellows-like expandable body whose base end is fixed to the upper edge of the tank body, whose tip part is formed to be able to float on the liquid surface within the tank body, and is also formed to be expandable and contractible by the introduction and withdrawal of pressurized fluid. A pretreatment tank characterized in that it is provided with a heat retention device comprising a supply and discharge means for supplying and discharging pressure fluid into the expandable body.