CS214983B1

CS214983B1 - Method of making the samples from plastic dough e.g. clay

Info

Publication number: CS214983B1
Application number: CS796680A
Authority: CS
Inventors: Tibor Hrnko; Jozef Majer
Original assignee: Tibor Hrnko; Jozef Majer
Priority date: 1980-11-21
Filing date: 1980-11-21
Publication date: 1982-06-25

Abstract

Predmetom vynálezu je sposob vytvárania vzoriek z plastického cesta napr. tehliarske) hlíny. Tieto vzorky definovaných rozmerov slúži na meranie vlhkosti mikrovlnnou metodou. Při spůsobu podía vynálezu sa používá zariadenia, ktoré je konstruované tak, aby odběr vzorky bol umožněný priamo vo výrobně] linke a aby umožnil aj laboratorně využíváme. Vzorka z plastickej suroviny sa vytvára priamočiarym pohybom piestu vzorkovača, ktorý je spojený s priamočarym motorom napr. hydromotorom. Tvar vzorky, ktorý sa požaduje pre meranie je vyformovaný v predústi vzorkovača, ktoré je jeho súčasťou. Požadované zhutnenie možno dosiahnúť v predústi změnou jeho tvaru, čo priamo vplýva na pasivné odpory proti pohybu suroviny, ktorým je úměrný tlak nutný na vytvorenie vzorky.It is an object of the invention to provide a method of forming samples from a plastic pathway e.g. tehliarske) clay. These samples of defined dimensions are used to measure humidity by microwave method. In the process of the invention, a device is used which is designed so that the sampling can be done directly in the production line and also to be used in the laboratory. A plastic material sample is formed by a linear movement of the sampler piston, which is connected to a linear motor e.g. hydraulic motor. The shape of the sample that is required for measurement is formed in the sampler inlet, which is part of the sampler. The required compaction can be achieved in the forefront by changing its shape, which directly affects the passive resistances against the movement of the raw material, which is proportional to the pressure required to produce the sample.

Description

The object of the invention is to provide a method of forming samples from a plastic path, for example brick clay. These samples of defined dimensions are used to measure humidity by microwave method. In the method of the invention, a device is used which is designed so that sampling is possible directly in the production line and also allows laboratory use. A plastic sample is formed by direct motion of the sampler piston, which is coupled to a linear motor, e.g., a hydraulic motor. The shape of the sample required for the measurement is formed in the sample sampler part of the sampler. The required compaction can be achieved in the forefront by changing its shape, which directly affects the passive resistances against the movement of the raw material, which is proportional to the pressure required to produce the sample.

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The present invention relates to a method of forming a sample from a plastics pathway, e.g., clay, which moisture must be measured for technological and operational purposes, and the equipment that generates such a sample. In the presently known practice, the microwave moisture meter needs to operate a device which produces a correlated sample of stable dimensions and density from the mass of the measured mass. Previous experiments used for this purpose screw-type samplers have shown that they can only be used for laboratory purposes because they have a number of drawbacks. Sikrutkovovnový sampler raw material to create a sample from the hopper space does not automatically move into the pressure chamber, sample density due to low pressures, the sampler lifetime is small, weight and size limits its convenient location in the production line, operating costs are relatively high and in addition, it is not applicable to the entire range of plastic pathways occurring in service. Because the microwave radiation method is dependent on the sampler, these deficiencies prevented its practical use in manufacturing.

The advancement of the present invention is that the device is simple, highly efficient, reliable in operation, generating a straight-line movement of the piston, thereby automatically emptying the chamber by each insertion of the piston, allowing for a constant take-up of the sample, generating a sample with the desired properties and thus wide application microwave method to measure the moisture of the plastic path.

The invention is illustrated in the accompanying schematic drawing, which represents its shape and arrangement. A rectilinear motor 1 connected by a plunger 2 to a piston of the sampler 3 is fixed to the rigid frame 6. The piston 3 is guided in the body of the pressure chamber 4, to which a shaped preform 5 with screws 7 serving to attach the humidity sensor is attached. The measured irregular pieces of the road, eg clay, are transported by gravity into the 'S' chamber of the sampler. The piston 3, which performs a continuous poor motion derived from the engine 1 through the piston rod 2, introduces them into the pressure chamber 4, where the path is compressed and in the precursor 5 a continuous sample, dimensionally deflated and used to measure moisture, is formed.

Claims

A method of forming samples from a plastic dough, for example, clay suitable for determining the moisture content of a dough by a microwave method, using a sampler operating on the principle of extrusion of a raw material, characterized in that

The YNALEZU sampler is a piston press to which a rectilinear motor 1 connected by a piston rod 2 to a piston of a press 3, which is guided in a pressure chamber 4 and is terminated by a precoat 5 giving the desired shape to the sample.