Felt press

Abstract

A felt press (1) comprising a frame formed by two shoulders (2; 3) supporting the ends (4a; 5a) of two support structures (4; 5) superimposed on each other , each structure has cylinder groups (6, 7, 8, 9; 10, 11, 12, 13) parallel to the horizontal axis; felt belts (14; 15); drive means (16; 17; 18; 19), which rotates one or more cylinders (8; 9; 10; 11) in the group of cylinders, moving the felt belt (14; 15) forward and Movement means (20; 21; 29; 30) capable of moving the groups of cylinders relative to each other. One of the shoulders (2; 3) is pivoted on the base (22) of the frame by means of a pin (23) and is connected to displacement means that allow it to rotate about the pin (23) (24), pivoted from a substantially horizontal parking position to a substantially vertical operating position in which the shoulder supports the support structure (4; 5).

Description

technical field [0001] The present invention relates to a felt press, particularly suitable for pressing damp hides from the wet working area of ​​a tannery. Background technique [0002] It is known in fact that after wet treatment in a drum, the leather is initially pressed to remove excess water and subsequently dried in suitable drying units. [0003] The known felt presses basically consist of a frame formed by two side shoulders supporting the ends of two mutually superimposed support structures, each with a horizontal axis parallel to each other. Cylinder group. [0004] A strip of felt is wound as a closed loop around each set of cylinders which keep said strip under tension and hydraulic motors actuate the cylinders to effect rotation for pulling the felt by adhesion bring. [0005] The press is also provided with moving devices, for example constituted by hydraulic jacks, which move the supporting structure in order to move the two cylinder groups closer to and ...

AI Technical Summary

Problems solved by technology

[0012] Both solutions are inconvenient, the time it takes to carry out these operations is considerable, and since they have to be carried out when the plant is shut down, said operations reduce production

[0013] In order to avoid production losses caused by the interventions mentioned above, tanneries often have spare presses which are used only for felt belt changes, thus increasing the cost of the mill

[0014] Another inconvenience relates in particular to the situation of cleaning the felt on the installation, wherein it is difficult to access all parts of the felt, and therefore there is the danger that dye residues will remain on the felt anyway, which is necessary when the A problem that exists when extruding light colored leather after already extruding dark colored leather

[0015] Another inconvenience occurs in the case of changing the felt belt, which is due to the need to disassemble the press to remove the felt belt

[0016] Such an operation is also time consuming, requires skilled personnel, and requires the space required to remove the felt strip laterally

Images