A piston sheath device for pneumatic conveying of materials

Abstract

The invention discloses a piston jacket device for pneumatic conveying of materials. The piston jacket device comprises a piston jacket body arranged in a pneumatic conveying pipeline and used for driving to-be-conveyed materials to complete pneumatic conveying, a concave protecting cavity is arranged at on end, for driving the to-be-conveyed materials, of the piston jacket body and used for carrying the to-be-conveyed materials to enable the same not to contact with the pneumatic conveying pipeline, a guide portion is arranged at an opening end of the protecting cavity, and when the piston jacket body pushes the to-be-conveyed materials, the guide portion contacts with the to-be-conveyed materials and guides the same into the protecting cavity under thrust action. The piston jacket device has the advantages of being capable of protecting the to-be-conveyed materials, capable of realizing automatic protection continuation with the to-be-conveyed materials which break away, convenient and quick to convey, high in safety and capable of guaranteeing physical characteristics and accuracy of samples.

Description

technical field [0001] The invention mainly relates to the field of equipment for collecting and processing material samples, and in particular to a piston sheath device for pneumatically conveying materials. Background technique [0002] For the sampling, sample preparation, and testing of material (such as ore, coal) samples, each country has mandatory standards, and the sampling and processing of samples must be carried out in accordance with the standards. The principle of sample sampling, sample preparation, and testing work process is to gradually reduce the particle size and quality of the collected samples without destroying the representativeness of the sample, until it meets the particle size and quality of the sample in the laboratory test ( Weight) accuracy requirements, and then carry out relevant laboratory analysis on the samples that meet the requirements. [0003] For example, taking coal sampling as an example, it is actually a sampling and analysis proces...

AI Technical Summary

Problems solved by technology

The staff needs to design the sample bottle according to the size of the pipe, or design the pipe according to the size of the sample bottle. There are problems such as difficult processing of the pipe and sample bottle, high cost of use, and very inconvenient operation.

The second is that this method does not protect the sample bottle, and the air pressure directly acts on the sample bottle, which may easily cause serious consequences such as sample bottle rupture or even sample bottle explosion.

However, due to the high-speed transmission, the sample bottle is easy to fall off from the push piece during the transmission process. For example, in the stage of a straight-line drop transmission pipeline, the sample bottle drops faster than the push piece due to gravity and acceleration, resulting in a drop with the push piece. Push pieces fall off

The detached sample bottle can no longer be fixedly connected with the push piece, causing the sample bottle to lose protection and directly rub against the pipeline. During high-speed transmission (10 meters per second), the friction heat will cause the sample water in the sample bottle to be analyzed or oxidized, affecting Sample physical properties and precision

At the same time, the sample bottle is easy to collide with the pipeline during the high-speed transmission process, resulting in damage to the sample bottle and sample leakage

[0007] (3) In some existing pipeline transportation methods, when there are foreign objects in the transmission pipeline (the foreign objects may be sample residues, sample leaks, or ice cubes, because when the temperature is very low, the inner wall of the pneumatic transmission pipeline is prone to appear If the foreign matter is not cleaned in time, it will affect the normal operation of the sample bottle and seriously affect the delivery efficiency of the sample

And because the pneumatic transmission pipeline is very long and very small (people cannot enter), it is very difficult to clean once foreign objects appear in the transmission pipeline

However, if it is not cleaned in time, the sample bottle may be stuck in the transmission pipeline. Once it is blocked, it will be more difficult to clean the pipeline and the maintenance cost will be extremely high.

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