Water-saving washing tank for diesel engine exhaust gas

Abstract

The invention belongs to the technical field of engineering vehicles, and relates to a water-saving washing tank for diesel engine exhaust gas. The washing tank includes a water washing box, an air inlet pipe and an air outlet pipe, wherein the water washing tank is divided into a water feeding chamber and a water supplementing chamber through a separation plate, the air inlet pipe is inserted into the deep portion of the water inlet chamber, and the air outlet pipe is connected with the upper portion of the water washing tank. The water feeding chamber is internally provided with a middle cylinder, an outer cylinder and a water retaining cover, wherein the middle cylinder and the outer cylinder are vertically arranged on the bottom, and the air inlet pipe is sleeved with the water retaining cover, the caliber of the middle cylinder is larger than that of the air inlet pipe and the highest position is higher than the lowest point of the air inlet pipe; the bottom of the outer cylinderis provided with a water through hole, the caliber of the outer cylinder is larger than the caliber of the middle cylinder, the outer cylinder is higher than the upper edge of the middle cylinder, andthe water retaining cover is located above an upper outlet of the outer cylinder. This structure makes tail gas undergo many turning points when entering the water feeding chamber, the tail gas velocity is reduced, water mist is reduced, and the water volume is completely separated. An experience shows that the water supplementing frequency of the water washing tank is reduced to once every fourhours, and the situation that most of the production time is occupied by the supplementing time is avoided.

Description

technical field [0001] The invention relates to the technical field of engineering vehicles, in particular to a water-saving diesel engine exhaust washing tank. Background technique [0002] With the development of mechanization of auxiliary transportation in coal mines in my country, trackless rubber-tyred transport vehicles have been widely used in coal mines. The exhaust temperature of the explosion-proof diesel engine is required to be no higher than 70°C. In order to reduce the temperature, eliminate sparks and reduce smoke and dust, the exhaust system of the explosion-proof diesel engine adopts a wet exhaust gas treatment system, commonly known as a water bath type, that is, the exhaust gas is mixed with water in the exhaust gas treatment box. After heat exchange, the exhaust gas temperature is lower than 70°C, and then it is discharged into the atmosphere together with the vaporized water vapor. [0003] In the prior art, the exhaust gas of the diesel engine enters t...

AI Technical Summary

Problems solved by technology

The air intake adopts a double-layer cylinder structure. There are long hole water inlet grooves on both sides of the outer cylinder side wall. When the exhaust gas enters the inner cylinder from the air inlet, it impacts the bottom of the outer cylinder. When the impact comes out, part of it returns to the upper water shield. The pressure of the water-air mixture is high and the separation is not sufficient, causing a large amount of water vapor to be discharged from the exhaust port, and the water consumption is fast.

The existing water washing tank needs to replenish water every 2 hours, and the production efficiency is low

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