Ultrasonic impulse dust collector of development machine

Abstract

The invention relates to an ultrasonic impulse dust collector of a development machine, comprising two parts of a cantilever dust collector and a flank dust collector, wherein the cantilever dust collector mainly comprises two parts of an upper cantilever dust collector and a side cantilever dust collector. The flank dust collector mainly comprises four parts of a left flank dust collector, a right flank dust collector, a flank lifting jack and a flank overturning dust guard. The whole cantilever dust collector is in a symmetrical box body structure and is installed on a development machine cantilever through a rear lug. Air suction openings are arranged at the bottoms of two sides of a box body. 12 air injection ducts are arranged on a front panel of the box body at a specified angle. A negative pressure impulse nozzle is fittingly installed at the rear end of each air injection duct through lock nuts and communicated with a steam pipeline through a steam interface. The whole flank dust collector is in a symmetrical box body structure and is installed on a development machine flank through a rear lug. A hydraulic control linkage mechanism formed by the flank lifting jack and the flank overturning dust prevention plate is installed above the box body. An air suction opening is arranged in the middle of the box body. A flank dust collection protective net is installed in the front of the air suction opening. 16 flank air injection ducts are symmetrically arranged on the front panel and a lower panel at the left side and the right side of the box body. A negative pressure impulse nozzle is fittingly installed at the rear end of each air injection duct through lock nuts and communicated with the steam pipeline through the steam interface. High speed water jet is generated by the water flow with a specified pressure and the air flow with a specified pressure through a negative pressure impulse nozzle. Meanwhile, bigger negative pressure is generated at the air suction openings. Due to the adoption of the ultrasonic impulse dust collector of a development machine, dust generated during the tunneling process of a development machine can be effectively shielded and reduced.

Description

technical field [0001] The invention relates to an ultrasonic impulse dust collector for a roadheader, which provides a synchronous and effective dust removal device for the tunneling work of the roadheader. Background technique [0002] The tunneling work of the roadheader generally adopts circular stepping and positive pressure ventilation. The dust generated by the tunneling is easy to accumulate in the limited working section, which brings great hidden dangers to safe production. The roadheader is generally equipped with an internal and external spray dust removal device. The internal spray dust removal device is to install a certain number of nozzles on the surface of the cutting head. The dust removal water source enters the nozzle from the cantilever core pipe through the cutting head. Spray water mist to cool the tool and remove dust, but so far, there is no good solution to the dynamic and static sealing fit in the world, resulting in a high failure rate and mainten...

AI Technical Summary

Problems solved by technology

[0002] The tunneling work of the roadheader generally adopts circular stepping and positive pressure ventilation, and the dust generated by the tunneling is easy to accumulate in the limited working section, which brings great hidden dangers to safe production

The roadheader is generally equipped with an internal and external spray dust removal device. The internal spray dust removal device is to install a certain number of nozzles on the surface of the cutting head. The dust removal water source enters the nozzle from the cantilever core pipe through the cutting head. Spray water mist to cool the tool and remove dust, but so far, there is no good solution to the dynamic and static sealing fit in the world, resulting in a high failure rate and maintenance rate of the internal spray dust removal device. It is difficult to ensure that the internal spray dust removal device can continue to operate normally for a long time

The external spray dust removal device is to arrange nozzles on several positions of the cantilever, and use the motor cooling water of the roadheader or an independent dust removal water source to supply the nozzles, spray larger particles of water mist and hit the cutting head within a certain range, which can play a certain role in dust reduction However, since most of the nozzles currently used are low-pressure nozzles, there are common problems such as low atomization rate, low kinetic energy of water mist, and small atomization cone angle. In order to achieve a better dust reduction effect, the number of nozzles must be increased, resulting in consumption The increase in water volume can only reduce dust to a certain extent, and the pollution still exists, especially excessive water will cause water flow to cause disasters, bring secondary pollution, and affect safe production

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