DD298487A5 - MIXING AND DOSING DEVICE FOR STAINLESS STEEL, ESTRICH OD. DGL. - Google Patents

Abstract

In a mixing and metering device for Mauermoertel, screed od. Like. With two separate Einlaszoeffnungen for the mortar components, such as sand and cement, a Einlaszoeffnungen the downstream mixing device and an outlet Auslaszoeffnung, is provided to achieve a cost-effective, simple and reliable construction dasz under each Einlaszoeffnung (shaft section 11, 12) a separate conveyor and metering channel (13, 14), each with a metering screw (24, 25) is arranged, wherein the parallel metering channels (13, 14) in a downstream mixing chamber (28) muenden , in turn, the discharge opening (35) is arranged downstream, wherein in the mixing chamber (28) coaxially with the metering screws (24, 25), with these in rotary connection mixing elements (34) are arranged. FIG {mixing device; metering; Mortar; screed; dosing screw; Einlaszoeffnungen}

Description

For this 1 page drawing

The invention is directed to a mixing and metering device for masonry mortar, screed od. Like. With two separate Inlet ports for the mortar components, such as sand and cement, downstream of the inlet ports Mixing device and an outlet outlet outlet. Such devices are required to be known from storage silos, in which the individual mortar components

to be stored separately, to dispense these on the construction site in doses and to mix.

In recent developments concerning devices of this type, it was assumed that to achieve a universal Substitutability, d. H. also for applications in which a very high dosing accuracy is required, the DOC

the components must be exactly volumetric. For this purpose, fan wheels were developed as sampling and metering, which in turn fed a separate mixing device.

However, in many applications involving a large mass of construction volume, e.g. in the construction of Detached houses, a very high dosing accuracy is not required. On this basis, the invention has the object, a device of the type mentioned in such a way,

that this can be produced inexpensively due to a simple and robust construction and thereby a high

Operating reliability with low maintenance. This object is achieved by the fact that below each inlet opening a separate conveyor and Dosing, each with a dosing screw is arranged, wherein the parallel dosing channels in a downstream Mixing room open, in turn, the discharge opening is arranged downstream, wherein in the mixing chamber coaxial with the Metering screws are arranged with these in rotary connection mixing elements. Such a construction can be realized with little structural complexity, has only a small space requirement and

nevertheless achieves a relatively high, at least for the overwhelming majority of all applications

Metering accuracy. In weiteror embodiment of the invention it is provided that in each conveyor channel coaxial with the Dosierschneoken and with these in rotary connection conveyor and loosening elements are arranged. Through this Elements are achieved in that the components entering through the inlet openings are loosened and in these

optionally existing Klumpon be crushed, so that a continuous Materialnachfluß without the risk of

Constipation or the dosing of the downstream metering screw impairing conveyor discontinuity exists. Conveniently, it is further provided that a single drive motor via each individual gear sections each one

continuous W ^ IIe drives in each fan and Dosierkanal. On this continuous wave can also

Mixing elements may be arranged in the mixing chamber. The dosage ratio for the individual components, e.g. Sand and Cement, is set by adjusting the transmission ratio of the transmission sections to each other. Ec can enter here Gearbox with variable gear ratio are used or one of the mostly occurring Requirements corresponding translation permanently set. Advantageously, continue to Anflanscheinrichtungen for attachment to a storage silo for the components with at least

a substantially vertical partition wall and separate Austragsöff.iungen provided for the individual components.

The Anflanscheinrichtungen are designed so that the outlet openings of the storage silo with the inlet openings

be aligned or connected via manhole sections.

The invention will be described in more detail below on the basis of a preferred embodiment in conjunction with the drawing

described. This shows a perspective view of a device according to the invention partially broken.

In the drawing, the lower part of a storage silo 1 is shown. This has a vertically extending partition wall 2,

which divides the storage silo 1 into two sub-containers 3,4, one of which is larger for sand and the other smaller for cement.

At the lower end of each sub-tank 3.4, an outlet opening 5.6 is provided, to which in each case a shaft part 7.8

followed. These shaft parts 7, 8 are connected via a flange 9 shown only schematically with the invention

Device 10, which in connection with the flange 9 corresponding, separate shafts 11,12, to

whose top are each provided separate inlet openings for the two components.

The device 10 has two mutually parallel conveying and metering channels 13,14, which are located directly below

the outlet openings of the shaft parts 11,12 assigned to each of these and separated from each other.

In the conveying and metering channels 13,14 each has a rotationally driven shaft 15,16, which at the discharge in the direction

seen front housing end wall 17 at an intermediate wall 18 and seen in the discharge rear

Housing end wall 19 mounted and driven by a motor 20. The motor 20 are gear sections 21, 22 for each

downstream of the shafts 15,16, wherein the transmission ratio of the transmission sections 21,22, the relative speed of the

Shafts 15,16 and thus determines the flow rate of arranged in a metering section 23 dosing screws 24,25. Seen in the conveying direction before the metering screws 24,25 are below the inlet openings forming Shaft sections 11,12 on the shafts 15,16 loosening elements 26 together with not shown in the drawing Arranged conveyor elements. By Auflockerungselemente 26 chunks of material are broken, so that a

continuous further promotion by the conveying elements from this loosening region 27 can be achieved in the metering 23.

Between the intermediate wall 18 and the end wall 19, a mixing chamber 28 is provided, the length of the mixing region 29th

pretends. In this mixing chamber 28 opens a water supply line 30 with an upstream flow control 31, which is indicated in the drawing only schematically.

In the mixing chamber 28 open passage openings 32,33 from the metering sections 23. Accordingly, takes place in the Mixing chamber 28 a mixing of the separately metered through the openings 32,33 components. The mixing

is accomplished by means of sitting on the shafts 15,16 mixing elements 34.

In the front wall 19, an outlet opening 35 is formed, discharged through which ready-to-use mortar or screed

Claims (6)

1. mixing and metering device for masonry mortar, screed od. Like. With two separate inlet openings for the mortar components, such as sand and cement, a inlet openings downstream mixing device and an outlet-side outlet opening, characterized in that below each inlet opening (shaft section 11,12) a separate delivery and metering channel (13, 14) each having a metering screw (24, 25) is arranged, the parallel metering channels (13, 14) leading into a downstream mixing chamber (28), which in turn is followed by the discharge opening (35), wherein in the mixing chamber (28) coaxial with the metering screws (24,25), with these in rotary connection mixing elements (34) are arranged. 2. mixing and metering device according to claim 1, characterized in that in each delivery and metering channel (13,14) coaxial with the metering screws (24,25) and with these in rotary connection conveyor and loosening elements (26) are arranged. 3. mixing and metering device according to claim 1, characterized in that a single drive motor (20) via respective individual gear sections (21,22) depending on a continuous shaft (15,16) in each conveying and metering channel (13,14) drives , 4. mixing and metering device according to claim 1, characterized by Anflanscheinrichtungen (flange 9) for attachment to a storage silo (1) for the components with at least one vertical partition (2) and separate outlet openings (5,6) for the individual components. 5. mixing and metering device according to claim 1, characterized in that in the mixing chamber (28) on the first shaft (15) fitting mixing elements (34) offset by approximately 90 ° against on the second shaft (16) fixed mixing elements (34 ) are arranged. 6. mixing and metering device according to claim 1, characterized in that the projections of the paths of movement of the mixing elements (34) on the shafts (15) on the one hand and (16) on the other hand seen perpendicular to the longitudinal axis of the shafts (15,16) intersect.