Constant-mass sampling device for sintering mixture

Abstract

The invention relates to the technical field of metallurgical sintering, and provides a constant-mass sampling device for a sintering mixture. The a constant-mass sampling device comprises a materialbuffer tank, a constant-mass accommodating cavity, a sampling cup and a controller. A material output port of the material buffer tank is communicated with a material inlet of the constant-mass accommodating cavity; a material inlet inserting plate is arranged at a material output port of a material buffering groove or a material inlet of the constant-mass accommodating cavity, a material outlet inserting plate is arranged at a material outlet of the constant-mass accommodating cavity, and a first material level switch used for detecting the height of a mixture in the material buffering grooveis further arranged on the side wall, close to the material output port, of the material buffering groove. In the practical application process, after a mixture enters the constant-mass accommodatingcavity through the material buffering groove and fills the constant-mass accommodating cavity, the material inlet inserting plate closes the material output port or the material inlet, the constant-volume mixture is intercepted in the constant-mass accommodating cavity, the intercepted constant-volume mixture is conveyed into the sampling cup, and due to the fact that the bulk density of the mixture is fixed, the constant-mass mixture is obtained.

Description

technical field [0001] The present application relates to the technical field of metallurgical sintering, in particular to a quantitative sampling device for sintering mixture. Background technique [0002] In the field of metallurgical sintering, the two parameters of sintering mixture particle size and moisture value are crucial to the production of sintering process. The granulation effect of the mixture is significantly affected, and an appropriate mixing moisture value can significantly improve the granulation effect of the mixture. [0003] In the patent application publication number: CN10333162A, a method and device for detecting the particle size and moisture of the mixture are mentioned. Through the detection device, the sampling of the mixture sample can be realized, and the particle size composition and moisture of the mixture can be detected. value. However, there is no mention in this patent of how to obtain a fixed-quality mixture sample. In practical applic...

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Problems solved by technology

However, there is no mention in this patent of how to obtain a fixed-quality mixture sample. In practical applications, the device obtains a fixed-quality mixture sample by controlling the volume of the sampling cup 03, that is, when sampling each time, the Sampling cup 03 filled with mixture sample, see figure 1 , is a schematic diagram of the mass sampling structure of the existing mixture sample. The specific operation is: when sampling, put an excess mixture sample into the sampling cup 03, and the excess mixture sample falls into the discard box 11, and then translate the sampling cup 03 Through the scraping rod 13, the height of the mixture sample in the sampling cup 03 is flush with the height of the edge of the sampling cup 03

[0004] But this fixed quality sampling method can produce bigger harm, for example, one: the mixture sample that overflows sampling cup 03 can pollute the outer wall of sampling cup 03; During the process, the mixture sample in the sampling cup 03 tends to overflow the sampling cup 03 and scatter on the moving track of the sampling cup 03, which pollutes the test environment, and causes the quality of the actual sampled mixture sample in the sampling cup 03 to decrease, leading to the test result , lack of representation

Three: If the actual mixture sample in the sampling cup 03 is loaded, the loaded material sample is too small, and the test result of the too small mixture sample is inaccurate and lacks representativeness

[0005] In order to accurately obtain mixture samples, constant mass reduction equipment is generally used in the coal sampling process. However, the constant mass reduction equipment is large in size and complex in structure, and is suitable for occasions with large sample sampling volumes. In the field of metallurgical sintering , in order to test the particle size and moisture value of the sintered mixture, the sampling quality of the general mixture sample is 0.5-1kg, and it is not suitable to use fixed mass reduction equipment

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