SE438455B - MACHINE FOR CLEANING AND / OR SORTING OF CURRENT MATERIALS - Google Patents

Description

15 20 25 '30 35 7908845-1 2 cleaning the screens. These known machines ensure in most cases the desired cleaning and / or sorting quality for flowing materials but have a relatively low efficiency per machine weight unit, which is because the separation intensity of these machines is mainly determined by the influence of gravitational forces, which have a determined size for the concrete mixtures of flowing materials to be separated. The acceleration of motion of particles of flowing material is therefore at separation a maximum of 9.81 m / sz, which limits the separation intensity.

A machine for cleaning and / or sorting flowing materials, including grain material and seeds, is known (compare, for example, U.S. Pat. No. 3,794,166). This machine comprises on the one hand a housing, on which a vertical screen, which has the shape of a rotating body, is movably attached, on the other hand a drive device intended to impart to the screen a rotational movement and, a vertical pivoting movement, and on the other hand a means for cleaning the screen, the shape of a rotating body and is arranged at one side of the screen and pressed against the outside of the screen by means of springs. This known machine provides a considerably higher efficiency per machine weight unit by utilizing the centrifugal inertial forces of particles of flowing material to intensify the separation. With this machine, however, only a single screen can be used, which makes it possible to separate flowing material into two fractions. The machine also does not have an air separation duct, so it is not possible to clean and / or sort flowing material according to the particle weight.

Because the means for cleaning the screen is arranged only at one side of the screen, the desired cleaning intensity for the holes (meshes) of the screen is not ensured, since the latter - after the screen has been turned an angle approximately equal to 77 radians - are again strongly clogged by particles of flowing 10 15 20 25 30 35 7908843-1 3 material, which significantly reduces the efficiency and functional quality of the machine. Using in this known machine only a single type of smooth surface means for cleaning the meshes of the screen also significantly reduces the efficiency of the machine, since a considerable part of the particles of the flowing material cannot be forced out of the meshes of the screen by the single type cleaner. These disadvantages make the use of this machine, for example in agriculture, significantly less efficient.

Other machines for cleaning and / or sorting flowing materials are also known (compare, for example, the Soviet inventors' certificate 506 439). Such a known machine comprises some identical air rig type separation rigidly attached to a frame, a drive device for the working means of the units and aspiration chambers connected to the units. Each unit comprises a housing, in which a pneumatic separating device and a vertical rotor are arranged in series one after the other. A screen-shaped drum (a screen drum) with several screens arranged in series one after the other, which have the shape of a rotating body, is movably attached to the rotor. The screen drum and screens are not separable, with the screens rigidly attached to the drum.

At one side of the screen drum are arranged means for cleaning the screens, which have the shape of a rotating body and a brushy surface. The cleaning means are hingedly attached to the housing of the unit and pressed against the outside of the screens. The screens are pivoted by means of crank-mounted vibrators, which are rigidly attached to the frame of the machine. The screen drum with the screens is intended to simultaneously rotate about a vertical axis and perform a pivoting movement along this axis. The flowing material fed into the machine is first treated with air to separate light particles and then sieved successively through several sieves to separate the material into the desired number of fractions. By centrifugal inertia 10 15 20 25 30 35 vwssßzss-1-ai 4 forces when separating the material by means of the screens in rotation and oscillation acting on the particles of the material to be segregated, the efficiency and functional quality of the screens increase considerably. .

This machine differs advantageously from the other known machines of this kind by its high efficiency and versatile area of use, for example by the possibility of separating the material into at least three fractions and sorting (classifying) it according to the weight of the particles. These known machines, however, suffer from significant disadvantages. Due to the fact that the screen drum and the screens are not separable and that the screens are rigidly attached to the drum, the replacement of the screens is greatly complicated when they are worn or during the transition to treatment of other flowing material, which significantly limits the possibility of standardizing machines with screen drums of different sizes. number of sights. To use in this machine only cleaning means of a single type, for example with a brushy surface, which is only arranged at one side of the screen drum, means that this machine has the same disadvantage as the other known machines of this kind. These circumstances significantly reduce the efficiency of the machine, complicate its use and limit the possibility of standardizing such machines with different efficiencies and areas of use.

The main object of the present invention is to considerably increase the separation efficiency of flowing materials and standardize the machines with different efficiency and area of use, and to provide such a machine for cleaning and / or sorting flowing materials, in which by changing the construction of the screen drum , the screens and means for cleaning the screens of the screens can significantly increase the efficiency of the machine and simplify its use. This is achieved by means of a machine for cleaning and / or cleaning flowing material, which comprises at least one cleaning and / or sorting unit, comprising a hollow housing which is attached to a frame and which enclosing a pneumatic separating channel with a flowing material spreading means arranged therein, rotors with a flowing material distributing means arranged at the upper part of the drum, a screen drum, movably connected to the rotor for performing a reciprocating movement relative to the drum, cleaners of the screen drum which are designed as a rotating body and pressed against the outer surface of the screen drum by means of springs and a drive device, attached to the frame of the machine which gives the screen drum reciprocating and rotating movements, which unit has an outlet to a vent chamber, the screen drum being movably connected to the rotor by means of suspension means, arranged in the upper and lower portions of the screen drum and having rings at both ends, which in themselves receive elastic bushings by means of which a first end of each suspension member is connected to the screen drum and a second end thereof to the rotor, the screen drum cleaners being mounted opposite each other relative to the screen axis of rotation of the screen drum.

Such a design of the machine contributes at the same time to considerably increase the separation efficiency for flowing materials and to a greater extent can standardize such machines with different efficiencies and areas of use.

It is suitable that the screen is detachable in several parts along the generator for the surface of the screen.

Such a design of the screen contributes to the screen becoming considerably easier to replace.

The joint areas (joint areas) for the detachable parts of the screen should be enclosed in hollow strips, the latter walls acting as reinforcement strips for the screen. , .__.........._.__.._. flflfl 10 15 20 25 30 35 7908845-1 6 This ensures that the joint areas of the screen are sealed to the desired degree, at the same time as their radial stiffness becomes higher.

It is advisable to simultaneously arrange means with a smooth and brushy surface for cleaning the screens.

This contributes to a considerably more efficient cleaning of the screens of the screens from different particles of the material to be separated.

The means for cleaning the meshes suitably consist of a rotating body, the shaft of which is attached to a lever, one end of which is connected by means of a hinge means to the housing of the unit and the other end of which is connected to a damping means, while the cleaning means are pressed against the outside of the screen drum. a feather.

This makes it possible to press the cleaning means against the screen considerably more stably and thereby clean the meshes more intensively.

The damping means may be a pair of friction, one element of which is in the form of a cylinder and is movably connected to the housing of the unit and the other element of which is in the form of a curved plate rigidly connected to the other end of the lever, the convex side of the curved plate being contact with the cylinder and the center of curvature of its surface coincides with the center of the hinge member.

This simplifies the construction of the damping member and increases its service life.

The distributing means may consist of a truncated cone, the base surface of which is turned upwards.

This contributes to a more uniform supply of the material to be separated to the surface of the screen.

It is suitable that longitudinal strips in the form of plates are arranged at the inside of the screen drum around the distribution member.

This prevents the material to be separated from sliding (slipping) along the surface of the screen in a tangential direction, and contributes to a more uniform distribution of the material over the circumference of the screen. The invention is described in more detail below with reference to the accompanying drawing, in which Fig. 1 schematically shows the construction of the machine according to the invention for cleaning and / or sorting of flowing material, Fig. 2 shows a longitudinal section through a rotor of the cleaning and / or sorting unit of the machine, Fig. 3 shows a cross section through the cleaning and / or sorting unit of the machine, Fig. 4 shows a section through a hinge member of a means for suspending the screen drum at the cleaning and / or sorting unit. rotor and Fig. 5 schematically show the construction of a means for cleaning the meshes of the screens and the attachment of the cleaning means to the housing of the cleaning and / or sorting unit.

The machine according to the invention for cleaning and / or sorting of flowing material comprises, for example, two cleaning and / or sorting units 1 (Fig. 1), which are arranged on a common frame 2 and connected to a venting chamber 3. On the frame 2 are drive devices 4 for units 1 arranged. In the machine according to the invention, it is possible, for example, to arrange a single unit 1. This embodiment is described in detail below.

Each cleaning and / or sorting unit 1 comprises a hollow housing 5 arranged on the frame 2.

Arranged in its upper part 5 is an annular air separation duct 6 and a spreading member 7, which has the shape of a truncated cone and is intended to feed flowing material into the annular duct 6. Below the duct 6 is a rotor 8 (Figs. 1-3) with a screen drum 9 arranged.

At the outside of the screen drum 9, in immediate contact with the same, means 10 and 11 for cleaning the drum 9 are arranged on the housing 5 (Figs. 1, 3).

Above the housing 5 (Fig. 1) is arranged a pipe 12, which is intended for supplying flowing material to the spreading member 7. Holes 13 are accommodated in the walls of the housing 5, which are intended for introducing air into the duct 6. In these walls in addition, outlet ducts 14-17 10 15 20 25 30 35 79688454 8 and doors 18 are provided. The housing 5 is provided with an outlet 19 to the venting chamber 3. The outlet ducts 14 and 15 of each unit are connected to each other by means of collecting pipes 20 and 21. The venting chamber 3 is provided partly with inlet ducts 22 with valves 23, partly with an outlet duct 24 with a valve 25 and partly with a channel 26. "The rotor 8 (Fig. 1) is arranged in the housing 5 by means of bearings 27 and 28, the bearing 27 being connected to the housing 5 by means of a cone 29, which is intended for supplying flowing material to the rotor 8. The rotor 8 (Figs. 1, 2) comprises an upper shaft 30, which is rigidly connected to a plate 31, and a hollow lower shaft 32, which is rigidly connected to a plate 33. The plates 31 and 33 are rigidly connected to each other by means of pillars 34. The screen drum 9 is attached to the rotor 8 (Figs. 1-3) by means of suspension means 35 provided with guide means (links) 36. Three collecting means 35, which are arranged in the upper and lower part of the drum 9, ensure the transmission of the rotational movement from the rotor 8 to the drum 9 and at the same time enables the drum 9 to perform a vertical forward and backward pivoting movement.

The screen drum 9 (Figs. 1-3) is composed, for example, of three sections arranged in series one after the other, i.e. two identical sections 37 and one section 38, each section comprising a screen 39 in the form of a rotating body which is, for example, cylindrical.

The screen 39 (Fig. 2) is suitably attached to the support rings 40 and 41 of the section 38 and to the support rings 41 of the section 37.

The support ring 41 (Fig. 3) can be made of, for example, durable light material and comprises two concentrically arranged rings 42 and 43 connected to each other by strips 44. The inner ring 43 is provided with three through holes 45 (Figs. 2, 3), which are separated from each other at equal distances. The ring 40 (Fig. 2) can be made of the same material and is provided - analogously to the ring 41 - with holes 46, which are separated at equal distances from each other. Between the rings 40 and 41 of the section 38 (Fig. 2) and the rings 41 of the section 37, hollow spacer columns 47 are arranged in the middle of the holes 46 and 45, respectively.

Between the sections 37 and 38, in the middle of the holes 45, the holes 45 are arranged in the hinge means 36, which belong to the suspension means 35. Between the sections 37 a cross beam 48 (Figs. 1-3) is arranged so that its hole 49 (Fig. 2) is adapted to rings 41 holes 45.

In the lower part of the screen drum 9, in the middle of the holes 45 of the rings 41, also arranged the guide means 36, which belong to the suspension means 35. The sections 37 and 38, as well as the guide means 36 and the cross beam 48 are clamped by clamping means 50, which are equally spaced apart. spaced and passed through the holes 46 of the ring 40, the holes 45 of the rings 41, the guide members 36 and the holes 49 of the crossbeam 48.

With the sieve drum 9 thus designed, it is possible to produce sieve drums with different numbers of sieves for machines for cleaning and / or sorting of flowing materials with different efficiencies and different areas of use from the standardized sections 37 and 38.

This contributes to a high constructive standardization of such machines, which reduces their manufacturing and operating costs.

The suspension means 35 (Figs. 1-4) are in the form of a rod, both ends of which are provided with rings 51 (Fig. 4), in which sleeves 52 are inserted from both sides, which are made of elastic, wear-resistant material, for example rubber or elastic polyurethane .

Arranged in the sleeves 52 are sleeves 53 of steel through which, at one end of the suspension member 35 (Fig. 2), the clamping member 50 is inserted, while at the other end a pillar 54 is inserted, which is rigidly connected to the rotor 8. Such a design of the suspension means 35 contribute to them operating safely under vaoza fi saa 10 15 20 25 30 35 10 10 the desired operating conditions for the screen drum 9.

At the rotor 8 (Fig. 1) the vanes 55 and 56 are rigidly attached, while at the drum 9 the vanes 57 and 58 (Figs. 1, 2) are rigidly attached. All vanes are intended for removing fractions of the material to be separated from the unit 1 (Fig. 1). Between the rings 41 (Fig. 2), sealing devices 59 of elastic material, for example rubber, are arranged at the joint between the sections 37 and 38.

The screen 39 (Figs. 2, 3) is detachable along the generator A (Fig. 2) for its surface to, for example, two identical parts I and II (Fig. 3). Such a design of the screen 39 contributes to the screen 39 becoming considerably easier to replace in the drum 9 (Figs. 1-3).

The screen 39 of the machine proposed according to the invention can be made separable into a larger number of parts, for example three or four parts depending on the diameter of the screen 39.

In each section 37 and 38 (Fig. 2) hollow strips 60 (Figs. 2, 3) are arranged, which are rigidly attached to the rings 40 and 41 and whose number must be equal to the number of detachable parts, for example I and II in the screen 39. The joint portions 61 (Fig. 3) for the parts I and II of the screens 39 must in this case lie between the hollow liateraaa eo walls 601 and son, which at the same time function as radial reinforcement strips for the parts 39 and I of the screen 39.

This ensures that parts I and II of the screen 39 are sealed at the points of disassembly along the generator A (Fig. 2) and contributes to a considerable increase in the service life of the screen 39 by giving the screen 39 higher radial stiffness. In order to be able to function more securely, parts I and II of the screen 39 (Fig. 3) on the support rings 40 and 41 (Fig. 2) and in the hollow strips 60 (Figs. 2, 3) are stirrups 62 arranged.

In order to clean each screen 39 (Figs. 2, 3), the middle axis of the drum 9 (Figs. 1, 2) is two cleaning means 10 and 11 (Fig. 1, 2). 3) arranged together. One cleaning means, for example 10 (Figs. 1, 3), has a smooth surface, while the other cleaning means 11 has a brushy surface. The number of cleaning means 10 and 11 may be larger, for example equal to four, depending on the diameter of the screen 39. The cleaning means 10 and 11 are in the form of a rotating body, the shaft 64 (Fig. 5) of which is arranged by means of a bearing 65 on a lever 66, one end of which 66 "is connected by means of a hinge member 67 and a pillar 68 to a plate 69 which is rigidly attached to the housing 5 and whose other end 66 'is connected to a damping means 70, which is intended to dampen the forced oscillations of the cleaning means 10 and 11, which are generated by the rotational movement of the screen drum 9 (Figs. 1-3).

The damping member 70 is of the friction type and is built up of two elements 71 and 72. The element 71 is suitably in the form of a cylinder and is connected to the plate 69 by means of a pillar 73 and a hinge member 74. The element 71 is made of, for example, textolite, capron, fluoroplastic el.dyl.

The element 72 has the shape of a curved sheet of hard wear-resistant material and is rigidly connected to the end 66 'of the lever 66. The convex side 75 of the element 72 is in contact with the element 71, the center of curvature 0 (radius of curvature R) of the surface 75 having to coincide with the center 0 of the hinge member 67. The convex surface 75 of the element 72 is smooth.

The elements 71 and 72 are pressed against each other by means of a spring 76, which is intended to simultaneously press by means of a column 77 rigidly connected to the lever 66 the cleaning means 10 and 11 against the surface of the sieves 39 (Figs. 1-3) sieves 39 (Figs. 2, 3). , 5). Because the damping member 70 (Fig. 5) is of the friction type, it has a simple construction and high functional reliability. In the machine according to the invention, the damping means can moreover be hydraulic or magnetoelectric depending on the grinding and magnetic properties of the flowing material to be separated.

The evenly spaced cleaning means 10 (Figs. 1, 3, 5) may be in the form of discs 78 threaded on the shaft 64 (Fig. 5). These boards are suitably made of wear-resistant material.

The cleaning means 11 (Figs. 1, 3) with a brushy surface can also be in the form of discs 79 (Fig. 3) with an elastic brush 80 attached to the same rigidly, which can for instance be made of wear-resistant synthetic materials.

A distribution member 81 (Figs. 1, 2) is rigidly connected to the shaft 30 of the rotor 8 and has the shape of a truncated cone with the base surface 82 facing upwards. At the inside of the drum 9, for example, longitudinal strips 83 (Figs. 1, 2) are attached to the ring 40 (Fig. 2) around the distribution member 81, which have the shape of a plate. Such a design of the distribution means 81 and the arrangement of the strips 83 contribute to a uniform supply and distribution of the material to be separated in the screen drum 9 (Figs. 1-3).

To rotate the rotor 8 of each unit 1 (Fig. 1), an electric motor 84 is arranged on the frame 2 with a pulley 85, which is connected by means of a pulley transfer 86 to a pulley 87 rigidly attached to the rotor 8.

In order to cause the screen drum 9 (Fig. 1) of each rotor 8 to perform a pivoting movement along the axis of rotation 63, a vibrator (a pivot) 88 is arranged on the frame 2, which comprises a crankshaft 89 connected to an electric motor 90, the crank length 91 of which is movably connected to the crossbeam 48 by means of a spherical bearing 93. To relieve the crankshaft 89 (Fig. 1) from the weight of the drum 9, the crossbeam 48 is connected to the shaft 30 (Figs. 1, 2) of the rotor 8 by means of a spring 94, whereby the gravity of the drum 9 transferred to the rotor 8.

If the nominal efficiency of the machine according to the invention has to be reduced, it can only comprise a single unit 1 (Fig. 1), whereby the number of drive devices 4 is reduced to a corresponding degree, and the frame 2 dimensions become proportionally smaller. The deaeration chamber 3 is designed with a small number of channels 22 and valves 23. The need for the collecting pipes 20 and 21 is eliminated.

The machine according to the invention operates in the following manner.

After starting the electric motor 84 (Fig. 1), the rotor 8 begins to rotate by means of the belt transmission 86, at the same time as the rotational movement from the rotor 8 is transmitted to the screen drum 9 over the suspension means 35 (Figs. 1-3). The cleaning means 10 and 11 (Figs. 1, 3) pressed against the screen 39 of the drum 9 also rotate due to the frictional forces.

When the electric motor 90 (Fig. 1) is started, the crankshaft 89 of the vibrator 88 begins to turn, whereby the rod 92 by means of the crossbeam 48 transmits the forward and backward pivoting movement along the shaft 63 to the screen drum 9 (Figs. 1, 2).

The flowing material to be separated is fed into the tube 12 (Fig. 1), through which it is supplied to the spreading member 7, which rotates together with the rotor 8, at the same time as, for example, a fan arranged outside the machine generates an air movement through the holes 13, the ring channel 6, the outlet 19, the duct 22, the aspiration chamber 3, the duct 26 and further through an additional pneumatic line (compressed air line), which leads to the fan.

The material to be separated distributed by the spreading means 7 in the annular duct is blown through with the air stream, which separates light particles from the material, which are then transferred by the air to the deaeration chamber 3 and removed therefrom to the duct 24, from where they through the valve 25 flows into the collecting pipe 20.

The air-treated material to be separated is directed by means of the cone 29 towards the distributing means 81, which rotates together with the rotor 8. Because the distributing means 81 is designed according to the invention, the flowing material slides radially and the tangent along its inside, whereby it is uniformly distributed along the surface of the ring 40 (Fig. 2), whereupon the strips 83 (Figs. 1, 2) are arranged. The strips 83 grip equal portions of flowing material and assign them a rotational speed equal to the rotational speed of the drum 9, while the strips 83 prevent these portions of material from sliding tangentially.

All factors contribute to a uniform distribution of the material being separated along the circumference of the screen 39 (Figs. 2, 3), which is very important for the screens 39 to be able to work very efficiently, which contributes to a high efficiency and functional quality of the screens 39. .

At the same time as the material rotates together with the drum 9 (Fig. 2), a centrifugal inertial force is generated, which presses the material against the inside of each screen 39, the oscillating movements of the sieves 39 and the drums 9 generating an extra inertial force which by cooperating with the particles' gravity that the material to be separated moves forward along the surface of the screens 39 from top to bottom. All factors ensure an intensive screening of the finest particles, for example by means of the upper screen 39 (Fig. 2), and the coarser particles by means of the intermediate intermediate screen 39 and the even coarser particles by means of the lower screen 39. Each and one of the fractions of flowing material to be obtained is discharged by means of the rotating vanes 58, 57 and 56, respectively (Figs. 1, 2) to the outlet channels 14, 15 and 16, respectively (Fig. 1).

The largest portions of the material to be separated leave the lower screen 39 (Fig. 1) and are removed by means of the vanes 55 to the outlet channel 17. Thus, the starting mixture of flowing material is separated into the desired number of fractions. Which represents the important advantage of the machine according to the invention compared to the known machines of this kind.

The hollow strips 60 (Figs. 2, 3) prevent the material to be separated from falling through the joint portions 61 (Fig. 3) of the parts I and II of the sieves 39, thereby preventing the fractions of flowing material to be obtained. become contaminated, whereby the functional quality of the machine according to the invention becomes higher.

When flowing material is screened through the screens 39 (Figs. 2, 3), the meshes of the screens are heavily clogged by particles of the material to be separated.

Such particles are forced out of the meshes by means of the cleaning means 10 and 11 (Figs. 1, 3). By the cleaning means 10 and 11 being arranged opposite each other in relation to the axis of rotation 63 of the drum 9 (Figs. 1, 2, 3), the meshes of the sieves 39 are cleaned, according to the invention, more intensively compared with the known machines, in which the cleaning means 10 and 11 are arranged at one side of the screen drum. This also promotes that the screens 39 function significantly more efficiently.

By using the machine according to the invention in a combined manner the cleaning means 10 with a flat surface (Figs. 1, 2) and II with a brushy surface, the meshes 39 of the sieves (Figs. 2, 3) are better cleaned by the cleaning means 10 with a flat surface, which have the desired stiffness, more efficiently squeezes out from the meshes the strongly retained particles, which preferably protrude beyond the outside of the sieves 39. The cleaning means 11 (Figs. 1, 3), the surface of which carries the elastic brush 80 (Fig. 3), more efficiently squeezes out the particles which lie deep in the meshes. It is the combined use of the cleaning means 10 and 11 which ensures a much more intensive cleaning of the meshes than the separate use of the same, which further increases the efficiency and functional quality of the machine according to the invention. 16 When the cleaning means 10 and 11 (Fig. 3) are unrolled on the surface of the screens 39, they periodically move away from the screens 39 by the means 10, 11 being affected by various factors, for example the particles of the material which shoot out outside the meshes. Such a movement of the cleaning means 10, 11 makes the cleaning of the meshes less vigorous. In order to considerably limit the negative effect of this movement, the cleaning means 10 and 11 are connected to the friction damping means 70 (Fig. 5). As the cleaning means 10 or 11 (Figs. 3, 5) moves away from the screen 39, the elements 72 (Fig. 5) of the damping means 70 move relative to the element 71, whereby a considerable part of the kinetic energy of the cleaning means 10 and 11 is consumed for execution of the work by means of the frictional forces, which act by the elements 71 and 72 being in contact with each other. Because the element 72 has the shape of a curved plate, the center of curvature of which 0 coincides with the center 0 of the hinge member 67, and because the element 71 has the shape of a cylinder, the element moves (slides) smoothly without any wedging and scratching along the convex surface 75 of the element 72. , which considerably increases the functional reliability of the damping means 70 and makes the cleaning of the screens 39 by means of the means 10 and 11 (Figs. 1, 3) more efficient.

In machines of this kind for cleaning and / or sorting of flowing material, it is important to be able to effectively clean the sieves, which must be easy to remove and standardized. In that the screen drum 9 (Figs. 1, 2) is composed of several sections 37 and 38, and that the screens 39 are separable into, for example, two parts I and II along the generator for their surface and in that the cleaning means 10 and II for the screens 39, according to the invention, are arranged opposite each other, the machine according to the invention has the important advantage, ie one increases the efficiency of the machine considerably and can more easily standardize the machine.

The simultaneous use of the cleaning means 10 with smooth surface and ll with brushy surface and the connection 2 2: 1 ß ßffft ä? 17 of the means 10, 11 with the friction damping means 70 according to the invention further contributes to a higher efficiency of the machine by cleaning the meshes of the screens more intensively. The uniform supply of the material to be separated to the sieves 39 by the distribution means 81 and the strips 83 being designed according to the invention further increases the efficiency of the machine.

Claims (6)

10 15 20 25 30 35. (3) k ä n n e t e c k n a d 7908843-1 18 PATENT CLAIMS A machine for cleaning and / or sorting flowing material, which comprises at least one cleaning and / or sorting unit (1), comprising a hollow housing (5), attached to a frame (2) and enclosing a pneumatic separation channel (6 ) with a spreading means (7) for flowing material arranged therein, rotors (8) with a distributing means (81) for flowing material arranged at the upper part of the drum, a screen drum, (9), movably connected to the rotor (8) for performing a reciprocating movement relative to the drum (8), cleaner (10) and (II) of the screen drum (9), which are formed as a rotating body and pressed against the outer surface of the screen drum (9) by means of springs (76) and a drive device, attached to the frame of the machine (2), and which gives the screen drum reciprocating and rotating movements, which unit (1) has an outlet (19) for a venting chamber in that the screen drum (9) is movably connected to the rotor (8) by means of suspension (35), arranged in the upper part of the screen drum (9) and lower portions and having rings (51) at both ends, which in themselves receive elastic bushings (52) by means of which a first end of each suspension member (35) is connected to the screen drum (9) and a second end thereof to the rotor (8) ) wherein the cleaners (10) and (11) of the screen drum (9) are mounted opposite each other in relation to the axis of rotation (63) of the screen drum (9). Machine according to claim 1, characterized in that the elastic bushings (52) are connected to the screen drum (9) by means of clamping means (50), which connect support rings (40) and (41) on the screen drum (9) and stretch through the elastic bushings (52) at the first end of the suspension means (35) as well as to the rotor (8) by means of struts (54) which are fixedly connected to the rotor (8) and extend through the elastic members (_ 2908843-). 1 W 19 r the bushings (52) at the other end of the suspension means (35). Machine according to claim 1, characterized by a cleaner (10) with a smooth surface and a cleaner (11) with a brushy surface used in combination. Machine according to claims 1 and 3, characterized in that a shaft (64) each cleaner (10 and 11) is movably supported by an arm (66) between its ends, a first end (66 ") by means of a hinge member. (67) are connected to the housing (5) of the unit (1) and the other end (66 ') of which is connected to a damping means (70). Machine according to claim 4, characterized in that the damping means (70) consists of a pair of friction elements, a first element (71) having the shape of a cylinder and being movably connected to the housing (5) of the unit (1) while a second element (72) has the shape of a curved plate, which is rigidly connected by, to the other end (66 ') of the lever (66), the convex side (75) of the curved plate (72) abutting against the cylinder (71) while the center of curvature of the plate (71) 0 ') coincides with the center (0) of the articulation member (67). Machine according to claim 1, characterized in that the inner surface of the screen drum (9) is provided with longitudinal strips (83) in the form of plates, arranged around the distributing means (81).