RU2147460C1 - Mixer - Google Patents

Abstract

FIELD: agricultural production; manufacture of building materials and other industries. SUBSTANCE: mixer includes weighers and vibroplate mounted in casing. Mounted in casing above vibroplate is belt conveyer with transversal ribs and drive. EFFECT: simplified construction; increased productivity; improved quality of mixing. 3 dwg

Description

 The present invention is intended for use in agricultural production, the production of building materials and other fields.

 A well-known continuous bitumen-screw mixer containing a housing, helical and blade shafts and drives (Kunta G.M. Technology of processing and preparation of feed. M .: Kolos, 260, 1978). The mixing of materials is carried out by rotating in one direction of the screw and blade shafts. Rotating at different speeds from individual drives, they ensure the movement of materials from the loading hopper to the discharge opening with a partial return of the mixture back - to increase longitudinal mixing and uniformity of the mixture. A blade shaft rotating at a higher speed than a helical one throws the mixed mass onto the helical shaft.

 The disadvantages of this mixer should include the complexity of its device. To obtain a mixture of good quality, you need a long time in the working area, for which the mixture must be passed through the device several times. The mixing process of bulk materials, which differ in mass ratios of tens of times, is especially long. At the same time, the productivity of the process is sharply reduced.

 A known mixer of bulk materials, taken as a prototype (US 4493556 A, CL B 01 F 11/00, 01/15/.85), containing dispensers and vibrating plates installed in the casing. The casing is made of elastic material and mounted obliquely. The bulk material supplied by the dispensers is transferred from one vibrating plate to another. In this case, the components are mixed.

 The disadvantages of the prototype are as follows. Particles discarded by the vibrating plate do not hit any structural element, but freely fall onto the next vibrating plate. The mixing efficiency of this is reduced. Mixing performance and quality are difficult to control. In addition, the mixer has a complex structure.

 The purpose of the invention is the creation of a mixer for mixing bulk materials having a simple design, high performance and mixing quality.

 This goal is achieved in that the mixer containing the dispensers and the vibrating plate installed in the casing is equipped with a conveyor belt with transverse ribs and a drive located in the casing above the vibrating plate. The use of a conveyor instead of an inclined chamber, the belt and ribbon ribs of which interact with the particles tossed by the plate, increases the quality of mixing. By changing the speed of the conveyor it is easy to establish the desired ratio of productivity and quality, which is difficult to do in the prototype.

 In FIG. 1 shows a mixer, side view.

 In FIG. 2 is a sectional view of FIG. 1 to aa.

 In FIG. 3 is a view of FIG. 2 along arrow B is a diagram of particle trajectories during mixing.

 The mixer contains dispensers 1, 2, tray 3, a conveyor 4 with a belt 5 provided with transverse ribs 6, and a drive 7 connected to the conveyor 4 by a transmission 8. A vibrating plate 9 is installed under the conveyor. The conveyor 4 and the vibrating plate 9 are placed in the casing 10. The vibrating plate drive conditionally not shown.

Mixer operation
Bulk materials to be mixed from dispensers 1 and 2 are fed by conveyor 4 to tray 3 and then to the edge of the vibrating plate 9. The lower branch of the conveyor, the vibrating plate and tray 3 are protected on both sides by a casing 10. The mixed materials are thrown up and form a suspended layer. Particles coming into contact with the surface of a moving conveyor belt are directed by the ribs in the direction of movement of the belt, after which they fall onto the surface of the plate.

 U-shaped flows of mixed materials are continuously formed, FIG. 3. When the mixer is in operation, the following phases of the mixing process are available.

 1. Mixing during accelerated movement of the plate up and when crossing the trajectories of particles discarded by the plate.

 2. Mixing in the interaction of particles with tape and ribs.

 3. Mixing when discarding particles with a moving tape and ribs. The trajectories of the discarded particles intersect.

 By changing the speed of the conveyor it is easy to establish the desired ratio of productivity and quality, which is difficult to implement in the prototype.

 The mixer is simple in design and has high performance.

Claims (1)

 The mixer of bulk materials containing dispensers and a plate installed in the casing, characterized in that it is equipped with a conveyor belt with transverse ribs and a drive placed in the casing above the plate.

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