SU1132987A1 - Arrangement for cleaning chips - Google Patents

Abstract

1. A DEVICE FOR CLEANING CHIPS, containing a rotating drum, loading and unloading units and a drive, characterized in that, in order to improve the quality of chip cleaning, the drum is equipped with a stepwise cleaning mechanism made of spring-loaded cylindrical chamber with ribbed inner walls, placed inside the drum, while the chamber is equipped with discs with windows and blades with pouring chutes, as well as slotted nozzles with a fan, and the disks with windows and blades of the chambers are evenly spaced s by the camera length, and slot nozzles are connected to a fan and mounted within the bottom portion. 2. The device according to claim 1. otlinyayuy {ees. that the ribbed inner walls of the chamber are made of angles set about a tCi gap. 3. The device according to claim 1, is different. (L that the slotted nozzles are installed in the field with: to the horizon in the direction of unloading material. 00 N3 00 1 I Kooa, Fig. Impurities

Description

The invention relates to the field of separation of crushed particles, mainly chips, and can be used in the manufacture of board materials and cellulose. A device for chip sorting is known, consisting of a frame where sieves, loading and unloading units, and an electric drive are fixed. When the machine is running, the chip mix is continuously fed through a feed hopper to the screening screen. Thanks to the swing of the frame, the material is scattered on the upper sieve. At the same time, the passable particles fall through the openings on the lower sieve, where fine fractions are removed from the standard material, and large particles that do not pass through the upper sieve cells are poured from it and sent to regrinding in the chipper. Thus, pieces of bark, mineral impurities are removed from the chips, and they are divided by size into a number of fractions 1. The disadvantage of this device is that in the sorted material a large percentage of the bark remains, both associated with wood particles and in pure form. In addition, when moving the material through the screens, the cells are blocked by flakes and bark, which permanently disrupts the sorting process and reduces the efficiency of its work. The closest to the invention in technical essence and the achieved effect is a device for cleaning chips, containing a rotating drum, loading and unloading units and a drive 2. A disadvantage of the known device is the insufficient quality of cleaning chips. The aim of the invention is to improve the quality of chip cleaning. This goal is made by the fact that, in a chip cleaning device containing a rotating drum, loading and unloading units and a drive, the drum is equipped with a stepwise chip cleaning mechanism made in the form of a spring-loaded cylindrical chamber with ribbed inner walls placed inside the drum, while the chamber is equipped with discs with windows and blades and pouring chutes, as well as slotted nozzles with a fan, and disks with windows and blades with pouring chutes are evenly placed along the length of the chamber, and slotted nozzles They are connected to a fan and installed inside the bottom of the chamber. The ribbed inner walls of the chamber are made of angles installed with a gap. In addition, the slit nozzles are installed at an angle to the horizon in the direction of unloading material. FIG. 1 shows the device, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 1. The device consists of vibropit.p 1 for dosed feeding of sorted chips, an inclined drum 2, in which a cylindrical chamber 4 is mounted on springs 3, divided into a series of sections by disks 5 with windows, each of which includes two zones composed of corners 6, mounted on edges of ribs with gaps between themselves, and a transshipment zone consisting of a smooth pipe 7, blades 8 with discharging chutes 9, slotted nozzles 10, pneumatic drives 11 connected to toro toros m 12; the drum is mounted on rotating rollers 13, to remove various impurities from the bark of the sorting pieces, dust, discharge unit 14 is supplied, and discharge unit 15 is used to remove conditional chips. The device operates as follows. The mixture of chips by the vibrating feeder 1 is continuously supplied to the inside of the chamber 4. When the drum 2 is rotated, the chamber mounted on the springs 3 begins to vibrate as it rotates. This is due to the fact that the amount (weight) of chips entering the different sections of the chamber varies, and this leads to a constant change in the center of gravity of the entire chamber and, as a result, to its vibration during rotation and handling of the material. Chip particles while grinding the drum, rubbing between themselves and simultaneously moving up and down along the relatively sharp corners of the corners 6. lose particles of foreign matter that adhere to them in the sorting zone of the SC. When shaking and vibrating the chamber, the heavy particles: raw pieces of bark, sand, earth, small stones, are lowered. lighter, peeled wood particles rise to the top. The foreign inclusions and the crust, the passage between the slit gaps formed by the angles 6, enter the lower part of the drum 2, transferring to the exit, and the remaining material enters the transshipment zone, into the pipe /. where it picks up the blades 8, rises upwards, and then, pouring onto the pouring chute 9, flows through the window of the disk 5 into the downstream section of the device, where the sorting process is repeated again. To intensify the process of cleaning the material and remove impurities into the chamber through the slotted nozzles 10, installed at an angle, a stream of air is forced from the fan 12. It blows the chips, cleans the slit holes from the sticking particles, promotes rapid advancement, and farthing the drum through the dredge i. i 14 different selected prizes. A tree

Full hours, having passed through several sections of the chamber, are cleared of bark, earth, sand, stones and, in their pure form, are removed through node 15 for use in the process stream. Glnj stiffness of the selection and removal of the cortex :: ;; p11 1 this is controlled by the installation in the chamber 4 of different numbers / 1-A

la sections, changes in the number of revolutions of the rotation of the drum 2 and the speed of the outflow of air from the inclined slot nozzles 10.

The proposed design of a device for cleaning chips will improve the quality of cleaning chips from a different type; impurities.

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Fig 2

FIG.

Claims (3)

1. A device for cleaning chips, containing a rotating drum, loading and unloading nodes and a drive, characterized in that, in order to improve the quality of cleaning chips, the drum is equipped with a stepwise cleaning chip, made in the form of a spring-loaded cylindrical chamber with finned inner walls located inside drum, while the camera is equipped with disks with windows and blades with overflow chutes, as well as slotted nozzles with a fan, and disks with windows and blades with overflow chutes are evenly placed along other than the chamber, and slotted nozzles are connected to the fan and installed inside the bottom of the chamber. 2. The device according to π. 1. characterized in that · that the finned inner walls of the chamber are made of corners installed with a gap. 3. The device according to π. 1, characterized in that the slotted nozzles are installed at an angle to the horizontal towards the discharge side of the material. SU ,,, 1132987