RU170178U1 - MIXER FOR PREPARING MIXES FROM BULK MATERIALS - Google Patents

Abstract

The utility model relates to technology and equipment for the preparation of mixtures of bulk materials in the chemical, food, pharmaceutical industries, production of building materials. A device for mixing bulk materials contains two containers for storing components, two dispensers and two paddle blowers. The blades of the superchargers are mounted on the shafts of the electric motors, the blades are connected by screw gears to the frame and have the possibility of longitudinal movement. A plate is pivotally mounted in the lower part of the mixing chamber, resting on the strain gauge connected to the measuring device through the rod. The utility model increases the uniformity of the mixture of bulk materials. 3 ill.

Description

The utility model relates to technology and equipment for the preparation of mixtures of bulk materials in the chemical, food, pharmaceutical industries, production of building materials.

A known method of mixing bulk materials and a device for its implementation, which consists in feeding materials into a rotating drum, organizing in it a flow of falling particles with their transverse movement in the flow and unloading the mixture, in a cross section of the flow of falling particles with the opposite direction of circulation in adjacent circuits. A device for mixing bulk materials is a rotating drum with loading and unloading units mounted on its ends, and a rotating drum nozzle containing a system of lifting blades mounted on the inner surface of the drum and deflecting elements fixedly mounted in a horizontal plane in parallel rows symmetrically with respect to its axis made in the form of funnels with inclined chutes, and a rotary plate fixed to adjacent edges of the funnels of parallel rows. Deflecting elements are combined in successive groups along the drum, each of which contains an equal number of elements in the lifting and lowering parts of the drum (see patent RU 2392042, class B01F 9/06, published on 06/20/2010).

The disadvantage of this device for mixing bulk materials is the repeated movement of the same particles of the components of the mixture, the high cost of energy and time.

The greatest similarity in terms of the totality of features with the proposed utility model has a method of mixing bulk materials and a device for its implementation (see patent RU 2532432, class B01F 5/12, publ. 10.11.2014).

To implement the method of mixing bulk materials, a device is intended that contains two containers for storing components, two dispensers and two blade superchargers, characterized in that the blades of the superchargers are connected by a chain transmission with an electric motor, the parallel arrangement of the blades of the wheels is fixed by meshing the sprocket teeth with a chain, an asterisk of one the superchargers are engaged with the inner side of the circuit, the other with the outer, the nozzles of the superchargers are connected to the mixing chamber and directed to each other on each other, a nozzle is inserted into each nozzle, the axes of the holes of the opposite nozzles do not intersect, the holes on the side of the paddle blowers are conical, intersecting each other, the holes cover the entire inner surface of the nozzle.

The disadvantage of this device is that the vane superchargers are fixed, and the vane wheels, having a common drive, have the same speed and set the same initial speed of the components at the time of supply. Particles of different components that differ in shape, size, mass, having the same initial speed at the time of feeding, can travel a different distance, crossing the zone of mixture formation or not reaching it. For this reason, the uniformity of the mixture is reduced. The most effective mutual penetration of the particles of the components occurs at the confluence of the flows, in the zone where the rate of their free fall exceeds the horizontal velocity.

Another disadvantage is the presence of nozzles, which create additional energy costs for the formation of small jets. The distance between the particles of the components (porosity) increases as they move away from the nozzle due to the action of forces arising from air resistance. Mutual penetration of materials during their counter feed occurs due to the formation of free space between particles inside the jet due to spraying of the jets under the influence of air resistance and does not depend on the number of jets.

The purpose of the utility model is to eliminate these drawbacks.

The technical result consists in regulating the distance between the superchargers and installing the superchargers at a distance from each other, providing a counter flow of jets from the components to the place of their intersection at the site of the descending trajectories of the jets, to the place where the free fall velocity of the particles exceeds the speed of their horizontal movement, as well as the formation jets without nozzles.

The problem is solved, and the technical result is achieved by the fact that the device for mixing bulk materials contains two containers for storing components, two dispensers and two impellers, the impeller blades are mounted on the shafts of the electric motors, the impellers are connected by screw gears to the frame and have the possibility of longitudinal movement , in the lower part of the mixing chamber a plate is pivotally mounted, resting through the rod on a strain gauge connected to a measuring device property.

In FIG. 1 is a drawing of a device.

The device (Fig. 1) is mounted on the frame 1, it contains containers with components 5 and 9, dispensers 4 and 10 connected to the paddle superchargers 2 and 8. The nozzles of the superchargers 6 and 8 are connected to the mixing chamber 17. The impeller wheels of the superchargers 3 and 13 are fixed on the shafts of electric motors 12 and 18. Vane blowers 2 and 8 are connected by screw gears 19 and 20 with frame 1. At the bottom of the mixing chamber, a plate 16 is pivotally mounted, through the rod 15 resting on a strain gauge 14 connected to the measuring device 7. The device works as follows uyuschim way.

Before starting the mixer, the location and installation of each supercharger is determined, which ensures the supply of components to the place where the speed of free fall of the particles of the components exceeds the speed of their horizontal movement. For this, each supercharger individually is switched on in operation. Turn on the engine 18 of the paddle supercharger 2, open the container shutter 5, and the component particles under the influence of their own weight enter the dispenser 4, and from it into the paddle supercharger 2. By the blades of the wheel 3, the particles are ejected through the nozzle 6, forming a jet, into the mixing chamber 7. The force of action of the jet on the plate 16 and the strain gauge 14 is measured by the device 7. The supercharger 2 is moved using a screw gear 19 along the frame in the direction of the arrow in one direction and the other, while simultaneously fixing the measuring force 7 I have a jet on the plate 16. The compressor 2 is stopped and fixed in place of the maximum of the force of the jet on the plate component. A circuit for determining the location of the supercharger is shown in FIG. 2. Similarly determine the location and installation of the supercharger 8 (Fig. 3).

After the superchargers are installed in the position ensuring the intersection of the jets of components in the section of the descending paths of the jets, both superchargers are turned on, the mixture formation process is shown in FIG. one.

Claims (1)

A device for mixing bulk materials containing two containers for storing components, two dispensers and two vane superchargers, characterized in that the vane wheels of the superchargers are mounted on the shafts of the electric motors, the vane superchargers are connected by helical gears to the frame and have the possibility of longitudinal movement, in the lower part of the mixing chamber a plate is pivotally mounted, resting through the rod on a strain gauge connected to a measuring device.

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