Reciprocating vertical oscillating electric sieving machine and its application method

Abstract

The invention discloses a reciprocating type vertical oscillation electric screening machine and an application method thereof. The reciprocating type vertical oscillation electric screening machine comprises a bearing device, a screen fixing device, a driving device and a screen group device, wherein the bearing device comprises a base, a support spring, a support rod and a slide strut; the screen fixing device comprises a netted tray, a screen fixing post, a screen fixing cross, a horizontal rod, a lower bolster, a lower bolster press bolt, a lower bolster traction piece, a screen linkage rod and a linkage rod sliding ring; the driving device comprises a motor, a motor turntable and a driving rod; the screen group device is formed by at least one group of screen chassis, standard screen and screen cover which are overlapped from bottom to top in sequence; when the screen group device screens, the screen group device is located in a space formed by the screen fixing post, the netted tray and the screen fixing cross. According to the device, the screening efficiency and the screening precision can be both improved, and the various functions, such as single-sample single-stage dry screening, multi-sample single-stage dry screening, single-sample multi-stage dry screening, single-sample single-stage wet screening and single-sample multi-stage wet screening, are simultaneously achieved.

Description

technical field [0001] The invention belongs to the technical field of screening, and relates to an oscillating screening machine, in particular to a reciprocating vertical oscillating electric screening machine and a use method thereof. Background technique [0002] In the fields of soil science, environmental science, agronomy, etc., it is often necessary to crush samples such as soil and plants and then pass through a standard sieve for elemental testing and chemical analysis; some experiments also require the analysis of solid particles in water samples. Screening, and then achieve the purpose of separation, collection or classification. [0003] At present, most of the screening in the above experimental process is manually screened by the experimenter. Generally, only one sample can be processed at a time. The screening efficiency is low and it takes a long time; The individual differences of the experimental operators have a great influence, which introduces human er...

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Problems solved by technology

[0003] At present, most of the screening in the above experimental process is manually screened by the experimenter. Generally, only one sample can be processed at a time. The screening efficiency is low and it takes a long time; The individual differences of the experimental operators have a great influence, which introduces human error and reduces the screening accuracy

The sieving process of many samples can easily cause dust to float into the air, which is harmful to the experimenter's body after inhalation

The wet sieving process is mainly sieved by artificial up and down oscillation. Due to the unstable strength and frequency of different experimental operators, the sample particles (such as soil aggregates, etc.) are damaged, which increases the experimental error.

[0004] Most of the existing screening devices are large-scale equipment, suitable for factory production, but cannot meet the requirements of precise, quantitative, and trace experimental analysis, and most of them are horizontal reciprocating oscillations. When they are applied to screening technology, especially the standard screens equipped When the pore size is small, the sample particles close to the sieve and slightly larger than the pore size of the standard sieve used will often block the sieve holes of the standard sieve, resulting in low sieving efficiency, long time for complete sieving, and even difficulty in complete sieving

[0005] At the same time, the existing experimental sieving device still has the following problems: 1. The structure is complex and the cost is high; 2. The operation is cumbersome and the work efficiency is low; 3. It is inconvenient to install, disassemble and clean; 4. The sieved samples are not easy to clean , easy to cause contamination to subsequent samples, etc.

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