초록 ▼

An extended-nip press for dewatering of a paper or board web, comprising a counter-member (10), which forms an extended press zone (S) together with a press-glide shoe (33) and a glide belt (40) running around the shoe. Through said zone (S), at least one dewatering fabric (50) and the web (W) from

An extended-nip press for dewatering of a paper or board web, comprising a counter-member (10), which forms an extended press zone (S) together with a press-glide shoe (33) and a glide belt (40) running around the shoe. Through said zone (S), at least one dewatering fabric (50) and the web (W) from which water is removed and which is supported by said fabric are passed. The glide belt (40) is passed over a leading and tensioning member (43; 70), and the closed loop of the glide belt (40) is guided around its leading and tensioning member (43; 70) so that, between said leading and tensioning member (43; 70) and the glide shoe (33) and its possible guide parts (33a, 33b), if any, the glide belt (40) has, as a rule, substantially straight runs (40a, 40b). The space enclosed by the glide belt (40) and susceptible to oil splashes is closed at both of the end areas of the loop of the glide belt (40 ) by means of wall constructions (42a, 42b), which may, if necessary, be provided with expansion joints (61) fitted in such a way that movements of the glide shoe (33) and of the leading and tensioning member (43; 70) for the glide belt (40) in relation to one another are possible.

대표청구항 ▼

An extended-nip press for dewatering of a paper or paperboard web, which comprises; a counter-member; a press-glide shoe; a glide belt running around part of the periphery of said press-glide shoe such that an extended press zone is formed between said counter-member and said glide belt, said press

An extended-nip press for dewatering of a paper or paperboard web, which comprises; a counter-member; a press-glide shoe; a glide belt running around part of the periphery of said press-glide shoe such that an extended press zone is formed between said counter-member and said glide belt, said press zone being capable of having at least one dewatering fabric and said web passed therethrough to remove water from said web; a leading and tensioning member having a diameter, said glide belt running around part of the periphery of said leading and tensioning member such that between said part of the periphery of said leading and tensioning member and said part of the periphery of said press-glide shoe said glide belt has two straight runs substantially parallel to each other, the width of said press-glide shoe being substantially equal to the diameter of said leading and tensioning member, and a pair of walls having a space between them and respectively located within a closed loop formed by said glide belt and respectively functioning to protect the space between them from lubricating oil splashes.