A system and method for centralized and automatic addition of chemicals in mining areas

Abstract

The invention provides a system and method for centralized and automatic addition of chemicals in mining areas, which includes a PLC controller, wherein the system for centralized and automatic addition of chemicals in mining areas also includes an electromagnetic starter, an addition pump, and a dust removal agent box , a solenoid valve, an operation display and an electromagnetic flowmeter, the PLC controller is respectively connected in communication with the electromagnetic starter, the solenoid valve and the operation display, and the electromagnetic starter is connected in communication with the adding pump; The electromagnetic flowmeter is arranged on a water pipe, the dedusting agent tank is connected to the water pipe through an adding pipeline, and the adding pump and the solenoid valve are both arranged on the adding pipeline. The wetting agent adding device is used in combination with the spray dust suppression device in coal mines, which ensures the continuous addition of wetting agent, improves the efficiency of adding wetting agent, and improves the efficiency of dust suppression.

Description

technical field [0001] The invention relates to an agent adding system and method for pipelines in underground coal mines, in particular to a centralized automatic adding system and method for dust suppression agents in mining areas. Background technique [0002] The dust concentration in the mining face has been far exceeding the relevant national regulations and standards, posing a serious threat to the safe production of the mine and the physical and mental health of the miners. On the one hand, excessive dust concentration can easily cause gas and coal dust explosion accidents, which seriously threatens the safe and efficient production of coal mining enterprises and causes huge economic losses. On the other hand, workers are prone to occupational pneumoconiosis due to long-term exposure to high-concentration dust workplaces. The number of people suffering from pneumoconiosis in coal enterprises accounts for about half of the total number of pneumoconiosis in my country....

AI Technical Summary

Problems solved by technology

On the one hand, if the dust concentration is too high, it is easy to cause gas and coal dust explosion accidents, which seriously threatens the safe and efficient production of coal mining enterprises and causes huge economic losses

On the other hand, workers are prone to occupational pneumoconiosis due to long-term exposure to high-concentration dust workplaces. The number of people suffering from pneumoconiosis in coal enterprises accounts for about half of the total number of pneumoconiosis in my country. For this, the country spends a lot of money every year to cure it. pneumoconiosis patients, but also bring great pain to patients and their families

[0003] At present, a lot of research work has been done on the dust prevention of mining working faces at home and abroad. Physical dust reduction measures such as internal and external spraying of mining machinery, negative pressure secondary dust reduction, random automatic spraying, and closed dust control at transfer points have improved the dust reduction effect to a certain extent. However, from the perspective of spray technology, no matter how the basic parameters such as nozzle type, installation method, and spray pressure are changed, the atomization effect of the spray still cannot greatly reduce the dust concentration, and the capture efficiency of respirable dust is generally relatively low. Low, there is still the phenomenon of coal dust exceeding the standard

To increase the spray effect and increase the dust reduction rate, it is necessary to change the wettability of water to dust particles, that is, to reduce the surface tension of water and improve the wetting effect. This is to add a wetting agent (surfactant) to the water and use chemical dust reduction; In the existing patented technology, the dust suppressant adding device is limited to serve a certain working face, resulting in the existing dust suppressant adding device can only be installed in the dust-proof pipeline close to the working face, which affects the safe production of the working face, It will also increase the burden on the staff due to the dispersion of the installation method of the dust suppressant adding device

Images