Automatic sampling machine for middle of belt

Abstract

The invention belongs to the technical field of coal, and particularly relates to an automatic sampling machine for the middle of a belt. The automatic sampling machine for the middle of the belt is provided with a supporting frame located above the belt; the lower portion of the supporting frame is provided with a coal flow inductive switch; the sampling machine further comprises a sampler sleeving a main shaft; the sampler is arranged corresponding to a discharging chute formed in one side of the belt; one end of the main shaft is provided with a backstop; the backstop is connected with an actuator through a coupler; the backstop is provided with a gear piece sleeving the main shaft; the backstop is further provided with a clamping spring piece matched with the gear piece, the lower endof the clamping spring piece is fixed to the supporting frame, and the upper end is in overlapped connection with the gear piece; the coal flow inductive switch is electrically connected with the actuator. Full-face sampling of coal flow in the cross section is ensured, potential safety hazards of human sampling are eliminated, labor intensity of workers is relieved, the influence of sampling human factors is solved, the quality inspection accuracy is improved, the coal dressing production can be guided in time, and the coal washing product quality is ensured.

Description

technical field [0001] The invention belongs to the technical field of coal, and in particular relates to an automatic sampling machine in the middle of a belt. Background technique [0002] With the development of industrial automation technology, major coal mines, coal preparation plants, power plants, and coking plants in the country are also striving to improve work efficiency and work quality by improving the level of automation. The traditional production inspection coal samples are collected manually on the belt. The manual sampling is affected by sampling tools and human factors, and the representativeness of the coal samples is not very large. At present, the existing problems of manual sampling are: 1. The shovel and shovel samples are time-consuming and labor-intensive, and the representativeness is poor. Using the automatic sampling machine to complete the same workload, only one signal is needed to set the workflow, and then the materials can be collected regul...

AI Technical Summary

Problems solved by technology

Traditional production inspection coal samples are collected manually on the belt, and manual sampling is affected by sampling tools, human factors, etc., and the representativeness of coal samples is not very large

At present, the problems of manual sampling are as follows: 1. Shoveling samples with a shovel is time-consuming and labor-intensive, and the representativeness is poor

However, using an automatic sampling machine to complete the same workload, only one signal is needed to set up the workflow, and the materials can be collected regularly and quantitatively; 2. Due to the large number of materials and the complexity of the material layers, the manual collection of materials fluctuates greatly; 3. There is a certain risk in manual sampling. Sampling on the belt during transportation is vulnerable to damage from mechanical equipment and sampling tools.

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