SU1000461A1 - Drier for drying skins - Google Patents

Description

(54) DRYING FOR DRYING LEATHER

The invention relates to leather production, in particular, to installations for the main drying of leathers or for drying them in a two-stage drying method.

The known dryer for drying leathers, containing a drying chamber, devices for curling leathers, each of which has a pole, provided at the ends, with a roller and an annular buffer, guide the movement of the poles, having sections for laying and removing the gears installed in the upper and the lower tier of the drying chamber and the interaction with the rollers of the poles, a device for transporting the poles between the guides of the upper and lower rushes of the chamber, made in the form of a vertically closed double-chain conveyor with two rus

the drive, chain links of which carry articulated on them hinged at the required distance from one another means for gripping the poles, mechanisms for removing devices for weighing the leather from the upper and lower guide arms of the chamber, each of which is installed in the area of the pole removal station guides and contains fixed.

A fixed stop mounted on the end of the guide rails. The disadvantage of the known dryer is the low reliability of operation and the design complexity of manufacturing.

The purpose of the invention is to increase the reliability of the dryer and simplify 10 design.

To achieve the set ;; ate dryer for drying leathers, containing a drying chamber, devices for hanging leather, each of which 1 has a pole equipped with a roller at its ends

15 and an annular buffer, guides for moving the staves, having stacking and removing poles, installed in the upper and lower troughs of the drying chamber and interacting with po20. poles of the poles, a device for transporting the poles between the guides of the upper and lower rushes of the chamber, made in the form of a vertical closed double-chain generator

25 two conveyor belts with a drive, chain links of which are not attached to them pivotally at the required distance from one another to capture the poles, mechanisms for

30 removal devices for hanging leather from the upper and lower chamber guides, each of which is installed in the area of the pole removal section and contains a fixed stop mounted on the end of the guide tracks, is additionally equipped with a cfieaMH device for controlling the pole movement along the guides, each of which is mounted on the inner wall of the chambers in the area of the stacking section of the poles on the guides and is made in the form of a rotatable spring-loaded plate interacting with the buffer of each sixth, and a limit switch, electric is mechanically connected with the conveyor drive control system and interacting with the spring-loaded plate, each mechanism for removing the pole from the directions has a brake made in the form of a rod that interacts with at least one pole buffer not lying on the support and a double-arm pivotally mounted on the wall of the chamber, the larger arm of which is provided with a movable weight, and the smaller neck is hingedly connected to the bar, and each means for gripping the pole is in the form of a fork, the free horse of which equipped with a roller counterweight. The drawing shows a diagram of the dryer, a cross-section. The dryer contains a chamber 1, equipped with a double-chain vertical closed conveyor 2, at the links of whose chain the forks 3 are hinged, carrying roller weights 4 at the free end. In the upper and lower rus chambers 1, guides 6 are mounted to move the poles 6, provided with rollers 7, interacting with guides 5, and ring buffers 8 for retaining a certain distance between the six-step 6 as they move along the guides. Guides 5 of the upper and lower rus are provided with stops 9 in the areas of the pickup of the poles. To reduce dynamic effects when the poles 6 move along the guides 5, the guides of the upper and lower russes at the points of the gear are removed; shoulder swivel lever 12 mounted on the wall of the chamber. The larger arm of the lever 12 is provided with a movable load 13, which acts on the bar 11 through a small shoulder hinge connected to the bar 11, which, in turn, presses the poles b through the buffers 8 to the guide bars. At the same time, the bar 11 interacts. with one or several ridge buffers of poles not lying on support 9 of guides 5, leaving one pole lying on support, free. At the stacking station, the direction of the ACTION 5 is equipped with displacement control devices 14, made in the form of a rotatable spring-loaded plate 15 mounted on the chamber wall, and a limit switch 16 interacting with the movable free end of the plate 15 and electrically connected to the conveyor drive control system 2. Chamber 1 dryers are made hanging, and the place of loading and unloading of leather taken out of the camera. . The dryer works as follows. In the loading zone, leather is laid on the poles 6, located in the forks of the grippers 3 of the conveyor 2, which feeds the poles with the leather into the upper shaft of the drying chamber 1 and places it on the guides 5 of the upper shaft. . The grippers 3 are then moved together with the chains of the conveyor downwards and, with their roller counterweights 4, pass in the upper train guides 17, thereby providing a stable movement of the grippers downwards. The pole with the skins with its rollers 7 moves along the guides 5 until the contact of c.VnopOM 9 and stops. The pole that follows is moved all the way by buffer 8 with the buffer of the previous pole. Thus, the accumulation of the poles on the guides 5 of the upper rus of the dryer occurs. Upon further movement of the conveyor 2, the grippers 3, lifting up on the pole removal station towards cix 5, pick up the six, which lies on the stop 9, and transfer it to the lower shaft direction, where the pole is also accumulated. When removing from the stop 9 by gripping 3 one poles, the remaining poles are shifted to the stop; it is being prepared for the next pole to be removed. The correctness of the arrival of the poles into the guides of each tusk (it consists in the absence of tilts of the poles, the delay of movement and fip.) Is monitored by devices for controlling the movement of the poles. In this case, the pole 6 moving along the guides 6 pushes the plate 15 with its buffer 8, which in turn acts on the limit switch 16. The interaction time of the plate 15 with the buffer 8 of the pole is determined by the speed of movement of the pole 6 with the skins and is set by the conveyor control system . If after the delay time of the spring-loaded plates 15 does not return to its original position, then the conveyor drive control system will work, the half command

FROM limit switch 16, and conveyor 2 stops.

The correct passage of the pole ensures the timely return of the plate 15 to its original position, and the conveyor 2 will not stop.

The elimination of dynamic effects during the accumulation of the poles on the upper and lower rus guides is carried out by the brake 10. The wheel b, the passage under the plate 11 of the brake, raises it with its buffer 8. At the same time, the weight 13 through the lever 12 creates a force of pressing the roller 7 of the pole to the guides 5, thereby slowing down the pole 6. The pressing force is adjusted by moving the load 13 relative to the larger arm of the lever 12.

The skin chambers located on the upper and lower layers of the skin are exposed to a drying agent, thus drying the leathers. The finished leather is supplied by the conveyor 2 to the place of discharge. Then the process of loading and drying the skin is repeated.

The dryer due to the selection of the speed i of the conveyor ensures the drying of leathers in a continuous manner. Improving the reliability of the dryer is achieved by equipping the dryer with devices for controlling the movement of the scissors and brakes, helping to eliminate various dynamic effects on the moving poles with the skins. The presence of fork grips provides a simplified design.

Claims (1)

1. USSR author's certificate No. 123260, cl. From 14 to 1/58, 1959.