The inner opening oval manhole is a safety device commonly used in industrial production. It is mainly installed on the top of the storage tank. In order to prevent the gas from causing excessive pressure on the storage tank under the condition of uncontrolled It is generally used together with related devices such as flame arresters and breathing valves.

Since this product is installed on the lower body ring of the oil tank, leakage prevention is particularly important. It is required that the joint surface of the two flanges must ensure its straightness and no floating twist phenomenon. The reinforcement plate and flange should be cut on the whole steel plate as far as possible without splicing. There are sealing rings on the flange and cover plate, and special attention should be paid to protection during construction. 3mm thick asbestos rubber gasket is used for sealing, no cracking is allowed. When installing the tightening bolts on the manhole cover, apply force in pairs to prevent the hole cover from being deformed.

If it is unavoidable to disassemble, the relevant technicians must remember to make necessary marks on it before disassembly, in order to fit the original position as much as possible to prevent the occurrence of oil in the oil tank during the second installation. Leakage, pay attention to uniform force when fixing to prevent leakage accidents caused by uneven force.

Commonly used surface treatment methods for inner opening elliptical manholes:

1. Matte inside and outside: The requirements for such manholes are relatively low, and there is no need to achieve a mirror effect. According to the customer's requirements and the effect achieved.

2. Pickling treatment: This kind of manhole is mainly used for industrial grade. The surface can be directly washed with acid, no other treatment is required. Like many construction sites, this is commonly used and relatively inexpensive.

3. Inside and outside mirror: This kind of manhole is mainly used for high-demand equipment such as food and dairy products. Bright inside and out, the surface is mirror-like and looks beautiful and

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安徽利勒潔凈設備科技有限公司是國內專業(yè)生產制造潔凈衛(wèi)生級閥門管件，主要應用于食品機械行業(yè)、制藥機械行業(yè)、乳制品行業(yè)、釀酒飲料行業(yè)以及精細化工等行業(yè)高精度衛(wèi)生級流體設備的專業(yè)生產廠家，產品規(guī)格齊全；產品主要有：不銹鋼衛(wèi)生級制藥用米勒橢圓人孔生產廠家，無菌隔膜閥，卡箍直通隔膜閥，三通隔膜閥，法蘭隔膜閥，氣動隔膜閥，U型隔膜閥，罐底隔膜閥 ；無菌球閥，卡箍直通球閥，螺紋球閥，焊接球閥，氣動球閥，法蘭球閥，電動球閥；衛(wèi)生級蝶閥，焊接蝶閥，卡箍直通蝶閥，螺紋蝶閥，法蘭蝶閥，氣動蝶閥，電動蝶閥；不銹鋼衛(wèi)生泵，不銹鋼衛(wèi)生級離心泵，不銹鋼衛(wèi)生自吸泵，不銹鋼酒精防爆泵，衛(wèi)生奶泵，衛(wèi)生飲料泵；止回閥，過濾器、呼吸器、換向閥、防混閥、安全閥；衛(wèi)生級不銹鋼管件，焊接彎頭，快裝彎頭，不銹鋼三通，快裝三通，四通，真空彎頭，大小頭；罐頂組件系列，不銹鋼儲罐，發(fā)酵罐，不銹鋼衛(wèi)生級人孔，清洗球/器，視鏡燈，排氣閥等其它非標產品生產加工；我們竭誠為您服務.