CN2272489Y - Diesel engine exhaust gas purification, muffler - Google Patents

Abstract

Diesel engine exhaust purification and muffler is a device composed of an outer cylinder, a cup-shaped cylinder and a ring formed by a corrugated stainless steel strip containing micropores. There are inlet pipes and exhaust pipes at both ends of the outer cylinder respectively, and the cup-shaped cylinder is fixed on the inlet and outlet passages of the outer cylinder with a number of stainless steel rings that are sleeved between the outer wall and the inner wall of the outer cylinder in the axial direction. The air port corresponds, the bottom of the cup corresponds to the exhaust port, and there are holes in the bottom of the cup and the wall of the cup. The device with this structure, because the honeycomb-shaped blocking layer formed by the corrugated stainless steel ring, performs multiple blocking on the exhaust gas of the diesel engine, which can not only slow down the air flow and reduce noise, but also block and absorb smoke particles, so that the exhaust gas can be purified.

Description

Diesel engine exhaust gas purification, muffler

The utility model relates to a diesel engine tail gas purification, smoke elimination and noise elimination device.

Diesel engines are noisy when they are running. According to their combustion characteristics, when the hydrogen in the fuel is burned, the carbon element will split at high temperature and aggregate into soot, which will emit a large amount of black smoke and dust, which will pollute the environment and endanger human health. Now gasoline is often used The exhaust gas purification of the engine and the muffler are used instead. It is a device composed of an outer cylinder, an inner cylinder and a curved pipe. The two ends of the outer cylinder have an intake pipe and an exhaust pipe whose radial dimension is smaller than the diameter of the cylinder. The inner cylinder is welded on The curved pipes around are fixed in the inner cavity of the outer cylinder. The exhaust gas purification and muffler of this structure cannot effectively reduce noise and suppress soot for diesel engines, and a large amount of black smoke still pollutes the environment during operation.

In view of this, the purpose of this utility model is to provide a diesel engine tail gas purification and muffler, which can effectively reduce the running noise of the diesel engine and the phenomenon of black smoke from the exhaust, so as to eliminate the pollution to the environment.

The technical solution of the utility model is that in the original outer cylinder, a cup-shaped cylinder is fixed on the inlet and outlet of the outer cylinder with several stainless steel rings that are alternately sleeved between the outer wall of the cup-shaped cylinder and the inner wall of the outer cylinder in the axial direction. On the channel of the exhaust port, the stainless steel ring is rolled from a transversely corrugated stainless steel strip containing micropores. The walls of the cups have holes. In this way, the microporous corrugated stainless steel rings that are alternately sleeved between the outer wall of the cup-shaped cylinder and the inner wall of the outer cylinder in the axial direction form multiple honeycomb-shaped flow barriers. Flow, deceleration, thereby reducing the noise, while the microporous corrugated stainless steel belt also absorbs and blocks soot particles, so that the diesel exhaust tail machine can be purified.

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is the longitudinal sectional view of diesel engine exhaust purification, muffler;

Fig. 2 is a transverse sectional view of diesel engine exhaust purification and muffler;

Fig. 3 is an expanded view of a corrugated stainless steel strip containing micropores.

With reference to Fig. 1, Fig. 2, at the two ends of urceolus 1, there are respectively air inlet pipe 2 and exhaust pipe 3 whose radial dimension is smaller than cylinder diameter, and a cup-shaped cylinder 5 is sleeved on the cup-shaped cylinder outer wall and The stainless steel ring 4 between the inner walls of the outer cylinder is fixed on the air inlet and exhaust port channels of the outer cylinder. The stainless steel ring is rolled into a horizontally corrugated stainless steel strip containing micropores (see Figure 3 for the shape). , the mouth of the cup-shaped cylinder corresponds to the air inlet, the bottom of the cup corresponds to the exhaust port, and holes 6 are arranged on the bottom of the cup and the wall of the cup. Usually, the micro-holes on the corrugated stainless steel belt and the holes on the bottom and wall of the cup are polygonal holes, such as triangular or pentagonal or hexagonal holes, which can increase airflow resistance, slow down the airflow, and reduce noise more effectively. . In order to make the corrugated stainless steel belt absorb and block the soot particles better, it is better to coat the surface of the stainless steel belt with an adsorption layer, commonly used are platinum lithium trioxide, platinum lanthanum oxide or rhodium aluminum oxide.

Diesel engine exhaust gas entering the device from the intake pipe of the outer cylinder, part of it is discharged from the exhaust pipe through the multiple honeycomb barrier layer of the corrugated stainless steel ring, and part of it enters the cup-shaped cylinder, and flows from the wall hole to the adjacent stainless steel ring and the outer wall of the cup cylinder, the outer The space formed by the inner wall of the barrel rotates in vortex and is discharged from the exhaust pipe through the honeycomb-shaped blocking layer, and another part is discharged from the bottom hole of the cup. Because the exhaust gas passes through multiple blocking flow, it not only reduces the flow velocity, but also blocks the smoke particles, so It has obvious effects of purifying tail gas, eliminating smoke and noise. Tests show that the noise of the utility model can be reduced by about 5dBA, and the smoke degree can be reduced by about 2RB (Boosh degree).

Claims (3)

1. Diesel engine tail gas purification, muffler, with an outer cylinder [1], the two ends of the outer cylinder respectively have an intake pipe [2] and an exhaust pipe [3] whose radial dimension is smaller than the diameter of the cylinder, and is characterized in that a cup-shaped cylinder [ 5] Use several stainless steel rings [4] that are set between the outer wall of the cup-shaped cylinder and the inner wall of the outer cylinder in the same axial direction to fix on the air inlet and exhaust port channels of the outer cylinder. The stainless steel rings are made of micropores The horizontal corrugated stainless steel strip is rolled, the cup mouth of the cup-shaped cylinder corresponds to the air inlet, the bottom of the cup corresponds to the exhaust port, and there are holes in the bottom of the cup and the wall of the cup [6]. 2. Purification of diesel exhaust gas according to claim 1, muffler, characterized in that the micropores on said corrugated stainless steel band and the bottom of the cup, the holes [6] of the cup wall are polygonal holes. 3. According to claim 1 or 2, the exhaust gas purification and muffler for diesel engines is characterized in that the surface of the microporous corrugated stainless steel strip and the surface of the cup-shaped cylinder are all coated with an adsorption layer.

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