CN201730658U - Muffling and exhausting device for high-power engine - Google Patents

Abstract

A silencer exhaust device for a high-power engine, the cylinder body (7) is a cylindrical body shape with round end covers (5) at both ends, and the intake connection (1) passes through the connection flange 1 (2), the connection flange 2 ( 3) Connect the air inlet (4) located at the bottom of the cylinder (7), the ingot piece (12) is welded on the air inlet (4), and the exhaust pipe (9) is arranged on the cylinder through the air outlet (8) The upper part of (7), the outer wall of the cylinder (7) is provided with a heat insulation board (6), and it is characterized in that: the air outlet (8) in the cylinder (7) is provided with a micro-perforated plate (10). The utility model has a cylindrical shape with end caps at both ends, which reduces the volume of the muffler device; the internal structure adopts micro-perforated plate technology, is filled with vibration-absorbing and high-temperature-resistant materials, and the outer wall is equipped with a heat insulation board, so that the pressure loss of the muffler is small. The regenerative noise is low, and the muffler frequency is wide, which can withstand the impact of high air velocity, reduce the surface temperature of the muffler, and increase the service life.

Description

A noise reduction exhaust device for a high-power engine

technical field

The utility model relates to a sound-absorbing and exhausting device for a crawler-type hoisting machinery above 1000T.

Background technique

With the rapid development of the economy, the country is vigorously building new infrastructure. We can see heavy machinery such as cranes, loaders, graders, and road rollers in each of the large engineering projects, which also indicates that my country's heavy machinery has achieved significant development. With the changes in engineering projects Large, for the heavy machinery industry, the original small-tonnage cranes can no longer meet the needs of production, and larger heavy machinery must be produced to meet the needs of the market. Due to the large engine power of large-scale construction machinery, it causes problems such as loud noise and serious exhaust pollution. The sound-absorbing exhaust device is mainly to solve these problems. Most of the existing products of this type have problems such as substandard noise reduction, power loss of the engine due to poor exhaust, and excessive temperature of the muffler cylinder.

Contents of the invention

In view of the above deficiencies, the utility model is to provide a high-power engine muffler exhaust device, which adopts micro-perforated plate technology inside the muffler exhaust device, fills with vibration-absorbing and high-temperature-resistant materials, and adds heat insulation boards on the outer wall of the muffler. The noise reduction exhaust device also greatly reduces the temperature of the outer wall of the silencer while reducing noise.

The technical scheme of the utility model is realized in the following manner: the silencer exhaust device for a high-power engine includes an air intake connection pipe, an air inlet, a cylinder body, an air outlet and an exhaust pipe, and the cylinder body has round end caps at both ends The shape of the cylinder body, the intake pipe is connected to the air inlet at the bottom of the cylinder through the connection flange I and the connection flange II, and the ingot piece is welded on the air inlet, and the exhaust pipe is connected to the air inlet on the cylinder through the air outlet. In the upper part, the outer wall of the cylinder is provided with a heat insulation board, and the feature is that: the air outlet in the cylinder is provided with a micro-perforated plate.

The end of the cylinder close to the air outlet is also filled with vibration-absorbing and high-temperature-resistant materials.

The heat insulation board is a board covered with small holes.

The micro-perforated plate is perforated with a plurality of holes with a diameter less than 1 mm.

In the utility model, the cylindrical shape with end caps at both ends reduces the volume of the muffler device; the internal structure adopts micro-perforated plate technology to reduce noise; The pressure loss of the muffler is small, the regeneration noise is low, and the muffler frequency is wide, which can withstand the impact of high air velocity, reduce the surface temperature of the muffler, and increase the service life.

Description of drawings

Fig. 1 is the structural representation of the utility model.

FIG. 2 is a partial sectional view of FIG. 1 .

In the figure: 1 intake pipe, 2 pipe flange I, 3 pipe flange II, 4 air inlet, 7 barrel, 8 air outlet, 10 mesh plate, 5 end cover, 6 heat shield, 9 exhaust pipe , 10 stencils, 11 vibration-absorbing and high-temperature-resistant materials, and 12 yuanbao pieces.

Detailed ways

Known by Fig. 1, it is the structure schematic diagram of the present utility model, a kind of muffler exhaust device for high-power engine, comprises intake joint 1, air inlet 4, cylinder body 7, gas outlet 8 and exhaust pipe 9, cylinder body 7 is the shape of a cylinder with round end caps 5 at both ends. The intake pipe is integrated with the device through the bolt connection between the connection flange I and the connection flange II, and the exhaust pipe 9 is connected with the device through a hoop. One. Ingot sheet 12 is welded on air inlet 4, and ingot sheet 12 can strengthen the strength of air inlet 4 and cylinder body 7 welding place, and end cap 5 is welded on the two ends of cylinder body 7. The exhaust pipe 9 is arranged on the upper part of the cylinder 7 through the air outlet 8, and the outer wall of the cylinder 7 is provided with a heat insulating plate 6, which is covered with small holes, and the heat insulating plate 6 is welded on the outer wall of the cylinder 7 Above, the heat insulation plate 6 is a plate full of holes, which is welded on the outer wall of the muffler cylinder, and plays an aesthetic role while insulating heat.

Known by Fig. 2, it is a partial sectional view of Fig. 1 . There is a micro-perforated plate 10 at the air outlet 8 in the cylinder 7. The micro-perforated plate is a thin plate with a plurality of holes with a diameter of less than 1mm. This technology makes the pressure loss of the muffler small and the regeneration noise low. The noise reduction frequency is wide, which can withstand the impact of high air velocity. The end of the cylinder 7 close to the air outlet 8 is also filled with vibration-absorbing and high-temperature-resistant materials 12 .

The utility model can well control the noise of the high-power engine, achieve the purpose of noise reduction, and reduce the loss of engine power at the same time.

Claims (4)

1. silencing exhaust device for high-power engine, comprise air inlet tube (1), suction port (4), cylindrical shell (7), air outlet (8) and outlet pipe (9), cylindrical shell (7) is the cylindrical body profile that there is nose circle lid (5) at two ends, air inlet tube (1) is by pipe connecting flange I (2), pipe connecting flange II (3) connects the suction port (4) that is located at cylindrical shell (7) bottom, be welded with ingot sheet (12) on the suction port (4), outlet pipe (9) is located at the top of cylindrical shell (7) by air outlet (8), the outer wall of cylindrical shell (7) is provided with thermal baffle (6), it is characterized in that: microperforated panel (10) is located to be provided with in the interior air outlet of described cylindrical shell (7) (8).

2. silencing exhaust device for high-power engine according to claim 1 is characterized in that: the end near air outlet (8) in the described cylindrical shell (7) also is provided with filling absorbing exotic material (11).

3. silencing exhaust device for high-power engine according to claim 1 is characterized in that: described thermal baffle (6) is the plate that is covered with aperture.

4. silencing exhaust device for high-power engine according to claim 1 is characterized in that: described microperforated panel (10) is to be installed with the hole of a plurality of diameters less than 1mm on thin plate.

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