SU682386A1 - Apparatus for the manufacture of globular rubber - Google Patents

Description

one

This invention relates to the field of synthetic emulsion rubber.

A known apparatus for producing rubber in the form of a crumb, containing a coagulation unit with a bath and a vacuum filter, and a device for drying with supply units for coolant and dusting composition 1 thereto.

The disadvantage of this device is the adhesion of rubber globules on the vacuum filter tape and, as a result, the relatively large particle size after crushing the tape, which complicates the drying process and leads to iodispersity of the rubber crumb.

A device for producing globular rubber is also known, comprising a vacuum filter with a dusting device, a latex bath placed under it, and a drying device with heat transfer fluid supply units and a dusting agent 2.

The latter device is the closest to the invention but to the technical essence and the achieved result.

A disadvantage of this device is the low intensity of the drying of rubber globules.

The purpose of the invention is to intensify the drying process of the globular rubber.

To achieve this goal, the device

2

for drying, vypoliepo in the form of vertically installed pipes connected to each other with threaded pipes with fans in the nile: drink parts and inclined grids with a wavy surface in the upper part, with the lattice section adjacent to the nozzle facing downward.

Such an embodiment of the device ensures separation of the dried rubber particles from the wet coolant and facilitates the transport of the globules through the device for drying in the coolant flow.

FIG. 1 shows the installation diagram; in fig. 2 - the same plan view; in fig. 3- device for drying; in fig. 4 shows the node A in FIG. 3

The installation contains a vacuum filter 2 located above the bath 1. In the bath 1 a decohezzler 3 is installed. A dusting device 4 is placed above the vacuum filter 2 strip at the outlet of the bath 1. The vacuum filter 2 is equipped with irrigators 5 and excellent rollers 6.

The receiving conveyor 7 serves to feed the rubber globules to the drying device.

The device for the device is made in the form of vertically mounted pipes 8 with fans 9 at the bottom and inclined

grids 10 with a wavy surface at the top.

The pipes 8 are connected to each other by nozzles 11 with the nodes of the supply of the coolant 12 and the dusting composition 13.

The area of the inclined lattice adjacent to the pipe And, obrash; en bulge down. The device has nozzles 14 for removal of the spent coolant. A heat exchanger 15 is provided to cool the dried crumb.

The device works as follows.

The latex coagulum continuously enters the bath 1, where the rubber particles float and are coated with a decohesion coating with the decohezzler 3, the resulting layer is dried and the particles are coated with a dusting composition from the dusting device 4 when the rubber is penetrated with gas containing suspended particles of this composition. The additional application of the dusting composition is carried out by irrigating agents 5 washing the rubber particles with suspensions containing suspended particles of the dusting composition. The skin formed is freed from excess water by squeezing rollers 6, and in the receiving conveyor 7, the skin is partially destroyed.

The crumb enters the pipes 8, where it is additionally crushed by fans 9 and picked up by the flow of heat-transfer fluid containing suspended particles of the dusting compound.

At the top of the pipe 8 on the inclined grate 10, the spent heat carrier is separated from the partially dried rubber crumb, which is discharged through pipe 11 to the next pipe 8 for further drying.

The spent heat carrier is discharged through the nozzle 14. The fresh heat carrier and the dusting composition are fed through the nodes 12 and 13.

The dried rubber crumb is cooled by the heat exchanger 15 and sent to the finished product warehouse.

The described device provides an intensification of the process of drying rubber crumbs and obtaining a high quality product.

Claims (2)

1. USSR author's certificate No. 462729, cl. B 29H 1./00, 1972. 2. USSR author's certificate number 472015, cl. B 29H 1/00, 04/06/73 (prototype). figl (D (g -CD / -CD G210 t Lj n