RU2049110C1 - Plant for liquid treatment of rawhide and goods - Google Patents

Abstract

FIELD: treatment of rawhide. SUBSTANCE: plant internal drum separated by blades-partitions into hollows is made in form of two disks. Disks are located at the end faces of external body and rigidly connected to shaft. Hollows are formed by blades-partitions which are rigidly connected to the end faces with disks. Blades-partitions are connected along the drum length with shaft rotating them at the preset speed. Blades-partitions are made of box-like shape with stiffening ribs. Working surfaces of blades-partitions are of quadratic curve in shape. EFFECT: higher efficiency of operation and reduced metal content. 2 dwg

Description

 The invention relates to mechanical engineering, in particular to equipment for liquid processing of leather raw materials.

 A known installation for liquid processing of leather raw materials [1] containing an outer casing and an inner drum located coaxially one inside the other and mounted on supports with the possibility of rotation with a given speed. The cylindrical part of the inner drum is perforated, and its inner part is divided by partitions into cavities.

 A known installation for liquid processing of leather raw materials [2] containing an external fixed casing and an internal movable drum mounted coaxially on supports with the possibility of rotation of the inner drum with a given speed. The inner part of the movable drum is divided by perforated partitions into cavities. The cylindrical part of the inner drum is perforated.

 A device for liquid processing of leather raw materials and semi-finished products [3] containing an external drum mounted on supports with the possibility of rotation, a second drum placed inside it, formed by disks mounted on the axis of rotation at the ends of the external drum and partitions, blades are fixed on the shaft for mixing the semi-finished product associated with the disks to ensure their rotation with a given speed.

 A disadvantage of the known installations is their significant metal consumption.

 The purpose of the invention to increase work efficiency and reduce metal consumption.

 This goal is achieved by the fact that each blade is box-shaped with stiffeners, and its working surface has the shape of a second-order curve, while the disks are mounted rigidly on the shaft.

 Comparative analysis with the prototype shows that the inventive installation has structural differences that can achieve a given goal.

 Figure 1 shows the installation, General view, front in section; figure 2 is the same, a side view in section.

Installation for liquid processing of leather raw materials, and the semi-finished product contains two support racks 1 and a shaft 2, on which there is an external cylindrical drum 3, connected by a gear pair 4 and 5 with a drive 6 rotate the drum 180 ^about to load and unload the semi-finished product.

 Inside, at the ends of the outer drum 3, two disks 7 are rigidly mounted on the shaft 2, connecting three blades 8, made box-shaped with stiffeners 9. The disks 7 have openings 10, and the septum blades 8 form three rotating cavities 11 connected by openings ( perforation) 12, made in the partition walls 8. The working surface 13 of each partition wall 8 in cross section has the shape of a second-order curve. The rotation of the cavities 11 formed by the partition walls 8, rigidly connected to the shaft 2, is carried out by means of a drive 14.

 The loading and unloading of the semi-finished product, filling and draining of technological solutions and water for washing is carried out through the hatch 15.

 Installation works as follows.

 After loading the semi-finished product into each cavity 11 and turning on the drive 14, the parting blades 8 rotate, which contributes to the periodic lowering of the leather semi-finished product into the technological solutions and its processing takes place.

 The working surface 13 of the blades-partitions 8 during rotation contributes to the smooth lowering and raising of the semi-finished product, which eliminates its clumping and twisting. Through holes 10 in the discs 7 and holes (perforation) 12 in the partition walls 8, the circulation and discharge of technological solutions.

After the end of the processing cycle, drum 3 through 6 and the drive gear pair 4, 5 and rotated through 180 ^{about the} hatch 15 and carried down overflow of process solutions. At the same time, to prevent loss of the semi-finished product, the hatch is closed by one of the septum blades. Then, the drum 3 is rotated by 180 ^{about the} hatch 15 up and it is supplied with water and feed flushing is performed.

 The cycle is repeated until the finished product is completely processed in various technological solutions.

Claims (1)

 PLANT FOR LIQUID TREATMENT OF LEATHER RAW MATERIAL AND SEMI-FINISHED PRODUCT, containing an external drum mounted on bearings with the possibility of rotation on the shaft, a second drum placed inside it, mounted for rotation and formed by disks mounted on the shaft along the ends of the external drum, and mixing partitions prefabricated and dividing the volume into cavities, mounted on the shaft to ensure their rotation with a given number of revolutions, and connected to the disks, characterized in that each blade you olnena box-shaped with ribs, and its working surface has the shape of a quadratic curve, the wheels are rigidly mounted on the shaft.

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