SU1458661A1 - Installation for cryogenic cooling of reclaimed automobile tyres - Google Patents

Description

The invention relates to the processing of worn car tires and can be used in industries associated with their disposal. The aim of the invention is to improve the reliability

work and reduced consumption of cryoagents. Pushers 11 tires 6 are fed into the trays of a four-section conveyor 7 installed at an angle of 3-5 ° to the horizontal plane in chamber 1, and successively move through zones 2 and 3, respectively, pre-cooling with cryoagent vapors and irrigation with liquid cryoagent from the nozzle collectors of tubular fencing elements. Bilateral irrigation of the tire tread 6 and its contact with the liquid cryoagent flowing into the tray of the conveyor 7 accelerates the heat exchange process, ensures uniform cooling of the tire 6. Next, the tire 6 falls on the swinging platform 12 of the discharge device, and then on the inclined shelf 18 and due to the inclination of the latter at an angle of 15-20 °, it tilts onto the matrix at a position convenient for further processing. Subsequent tire 6 from moving after standing on platform 12 is delayed by the stop 17. 5 Il. .

..... 1458661

FIG. one

1458661

one

The invention relates to the processing of worn car tires and can

be used in industries associated with their disposal.

The aim of the invention is to improve the reliability and reduce the consumption of the cryoagent.

FIG. 1 shows an installation for cryo-cooling recyclable automobile tires with a linear arrangement of pre-cooling and irrigation zones; in fig. 2 - the same, with the location of the zones at an angle to one another; in fig. 3 - the same, with a layered arrangement of zones; in fig. 4 - section A — A in FIG. one; in fig. 5 — section B — B in FIG. one.

The installation contains an inclined cylindrical heat-insulated tunnel chamber 1 with zones 2, 3, respectively, for pre-cooling and irrigation, a collector 4 located in the upper part of chamber 1 with nozzles 5 for supplying a cryogenic agent. Chamber 1 contains a device for moving tires 6, made in the form of a stepped four-section conveyor 7 installed at an angle of 3-5 ° to the horizontal plane.

The choice of this angle is due to the fact that under the influence of gravity, taking into account various defects of tires 6, their swing along the chute begins when it is tilted at an angle of at least 3 °. A decrease in the angle of inclination leads to a decrease in the rolling mobility of the tires 6 along the trough, an increase to an unjustified increase in the chamber 1 in height.

Sections of the conveyor 7 are made in the form of trays, with two middle sections 8 located on the lower stage on the bottom of chamber 1, and the two extreme sections 8 on the upper steps on the side walls of chamber 1. The irrigation of the cryoagent tires, for example liquid nitrogen, is also carried out using nozzles 5 installed on the elements 9 fencing. The thermal insulation of the chamber 1 is vacuum-vacuum or layered-vacuum.

The installation includes a device for loading and unloading tires 6. The device for loading contains a conveyor 10 for moving them and a distribution device with four pushers 11 having a pneumatic drive installed outside the chamber 1 for distributing tires 6 to the trays of the conveyor 7.

Device for unloading contains installed behind the conveyor 7 platform 12, pivotally connected with the rod of the electromagnet 13 and rotatable around the axis 14. One end of the platform 12 rests on the spring 15 to return it to its original position. At the ends, the platform 12 has stops 16 and 17, respectively, for stopping the moving tire 6 and for delaying the tires on the conveyor 7.

2

Inclined shelf at an angle of 15-20 ° 18

provides placement of tires 6 on

matrix 19 in a convenient horizontal position for breaking.

With the help of the fan 20, the pairs of cryogenic agent are fed into the socket 21 and form a thermal curtain at the entrance to the loading chamber 22.

At the location of zones 2, 3 pre-cooling and irrigation at an angle to one another, a rotary device 23 is used. At the exit from each tray of the conveyor 7 a swinging platform 24 is installed, similar to platform 12. When the zones 2, 3 are pre-cooled and irrigated, the movement of tires 6 is carried out through the vertical channel 25.

Installation for cryo-cooling recyclable tires works as follows.

Using a mechanism for moving without sorting tires arrive at the conveyor 10, where their position is fixed by means of a plate. At the same time, a batch of tires fits to all trays of the conveyor 7, the conveyor 10 stops, this serves as a signal to turn on the pusher 11 of the first tray. After a certain time, depending on the performance of the installation, the tire 6 is fed to the second tray by the pusher 11, etc. In order to improve the heat exchange processes in the pre-cooling zone 2, the tires 6 are scented with refrigerant vapor. Irrigation with liquid cryoagent using nozzles 5 is performed in zone 3 of the collector 4 and nozzles on the elements 8 of the fence.

The nozzles 5 are directed onto the tire 6 in such a way that the tread is watered from the outside and from the inside, evenly along the circumference of the tire 6. Irrigation, first of all, of the tread is necessary because at this point the tire has the greatest thickness. Bilateral irrigation of the tread and its contact with the cryoagent flowing into the tray accelerates the heat exchange process, provides a more even cooling of the tire 6. All this eliminates the need for long-term temperature stabilization and, ultimately, leads to savings of the cryoagent.

After cooling down, the tires 6 arrive at the swinging platforms 12. At this time, the plane of the corresponding platform is located at the level of the conveyor tray 7. The tire 6 rolls onto platform 12 and is braked by the stop 16. When unloaded, electromagnet 13 rotates platform 12 clockwise, tire 6 under the action of gravity and additional acceleration, reported by the stop 17, moving 1458661

3 slides onto shelf 18. Due to the inclination of the shelf, the tire overturns on the matrix 19 in a position convenient for further processing. The subsequent tire 6, from moving along with standing on the platform 12, is delayed by the stop 17, this ensures the necessary holding time of the tire in chamber 1.

This installation ensures reliability of operation due to the exclusion of rotating mechanisms operating at low temperatures. In addition, refrigerant consumption is reduced, as heat leakage is reduced by eliminating devices moving from the warm to the cold zone and back. This also contributes to the implementation of the four-section conveyor. With a smaller number of sections, part of the cryoagent is not productively spent on cooling the walls of the chamber. With more than 4, the number of sections increases the volume of the chamber 1 and, consequently, heat leakage to it. With a four-section carpet, it is most expedient to place the two middle sections on the bottom

four

steps on the bottom of the chamber and two extreme -

on the upper step at its side walls.

Claims (1)

<claim-text> Formula of Invention </ claim-text> <claim-text> Installation for cryo-cooling of utilized automobile tires, comprising an inclined cylindrical heat-insulated tunnel chamber with pre-cooling and irrigation zones, located in the upper part of the chamber a collector with nozzles for feeding a cryoagent, a device for loading and unloading tires, characterized in that , in order to increase the reliability of work and reduce the consumption of the cryoagent, installing a supply on the device for moving tires, made in the form of a stepped four-section tray about a conveyor installed at an angle of 3-5 ° to a horizontal plane, two middle sections of which are located on the lower stage, and two 20 extreme on the upper stages, the unloading device contains a platform, spring-loaded in a vertical plane, with stops. </ claim-text> <claim-text> Figure 2 </ claim-text> <claim-text> 1458661 </ claim-text> <claim-text> A-A </ claim-text> <claim-text> 5 ~ 5 </ claim-text> <claim-text> Phases. H </ claim-text> <claim-text> Fae. 5 </ claim-text> <table border = "1"> <tr> <td> </ td> <td>