CN211314356U

CN211314356U - Diesel internal combustion engine exhaust pipeline

Info

Publication number: CN211314356U
Application number: CN201922206832.XU
Authority: CN
Inventors: 高安
Original assignee: Jiangsu Zhongfu Power Industrial Chain Co ltd
Current assignee: Jiangsu Zhongfu Power Industrial Chain Co ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-08-21
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a diesel internal combustion engine exhaust pipe, which comprises an exhaust pipe, wherein the air inlet end of the exhaust pipe is connected with an air duct, the inner end of the air duct is in threaded connection with a noise elimination component, the noise elimination component is in sliding contact with the inner wall of the exhaust pipe, the noise elimination component comprises a noise elimination pipe which is installed on the air duct in a threaded manner, a plurality of damping supporting springs are evenly installed on the circumferential surface of the side of the noise elimination pipe, the outer ends of the damping supporting springs are fixedly connected with a spherical installation cavity, balls are installed in the installation cavity in a sliding manner, the balls are in full fit with the inner wall of the installation cavity, an annular scraper is fixedly installed on the installation cavity, and the annular scraper is in fit and sliding contact with the outer side surface of the balls, the noise reduction effect of the exhaust pipe is greatly improved.

Description

Diesel internal combustion engine exhaust pipeline

Technical Field

The utility model relates to an exhaust duct technical field especially relates to a diesel internal-combustion engine exhaust duct.

Background

The diesel engine has the advantages of large torque and good economic performance. The working process of a diesel engine is much the same as that of a gasoline engine, and each working cycle also goes through four strokes of intake, compression, power and exhaust. However, the fuel for diesel engine is diesel oil, which has higher viscosity than gasoline and is not easy to evaporate, and its self-ignition temperature is lower than gasoline, so the formation and ignition mode of combustible mixture are different from that of gasoline engine. The difference is mainly that the mixture in the cylinder of the diesel engine is compression ignited, not ignited. When the diesel engine works, air enters the cylinder, and when the air in the cylinder is compressed to the end point, the temperature can reach 500-700 ℃, and the pressure can reach 40-50 atmospheric pressures. When the piston is close to the top dead center, the fuel nozzle of the fuel supply system sprays fuel to the combustion chamber of the cylinder in a very short time at a very high pressure, the diesel oil forms fine oil particles, the fine oil particles are mixed with high-pressure and high-temperature air, the combustible mixed gas is combusted by itself and expands violently to generate explosive force to push the piston to do work downwards, the temperature can reach 1900-2000 ℃, the pressure can reach 60-100 atmospheric pressures, and the generated torque is very large, so that the diesel engine is widely applied to large-scale diesel equipment.

However, in the use process of the existing diesel internal combustion engine exhaust pipe, carbon deposition smoke dust is easy to adsorb on the inner wall of the exhaust pipe when passing through the exhaust pipe, so that the exhaust pipe is blocked, the exhaust noise is greatly improved, and certain defects exist.

To this end, we propose an exhaust pipe for a diesel internal combustion engine.

SUMMERY OF THE UTILITY MODEL

The utility model provides a diesel internal-combustion engine exhaust duct, aim at are convenient for clear up the carbon deposit smoke and dust in the exhaust duct, reduce the noise of exhaust duct in the use.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:

the utility model provides a diesel internal-combustion engine exhaust duct, includes the blast pipe, blast pipe air inlet end is connected with the air duct, threaded connection has the noise elimination subassembly in the air duct, just the noise elimination subassembly with blast pipe inner wall sliding contact, the noise elimination subassembly includes that the screw thread is installed noise elimination pipe on the air duct, evenly install a plurality of shock attenuation supporting spring on the noise elimination pipe side periphery, shock attenuation supporting spring outer end fixedly connected with globular installation cavity, slidable mounting has the ball in the installation cavity, just the ball with installation cavity inner wall is full of the cooperation, fixed mounting has annular scraper on the installation cavity, just annular scraper with ball lateral surface laminating and sliding contact.

Preferably, in the exhaust duct of the diesel internal combustion engine, a circular truncated cone-shaped guide tube is connected between the air duct and the exhaust pipe.

Based on the technical characteristics, the arrangement of the guide tube facilitates the muffler tube to enter the guide tube along the inclined plane of the inner wall of the guide tube.

Preferably, in the exhaust pipe of the diesel internal combustion engine, a drain hole is formed at the bottom of the intake end of the exhaust pipe.

Based on the technical characteristics, the arrangement of the drain holes can drain accumulated water in the exhaust pipe, and the drain pipe is prevented from being corroded by the accumulated water.

Preferably, in the exhaust pipe of the diesel internal combustion engine, a plurality of muffling holes are uniformly formed in the circumferential surface of the muffling pipe.

Based on the technical characteristics, the arrangement of the silencing holes can reduce the energy of smoke exhaust noise of the diesel internal combustion engine, thereby achieving the purposes of noise reduction and silencing.

Preferably, in the exhaust duct of the diesel internal combustion engine, a telescopic pipe is arranged inside the damping support spring, and the telescopic pipe includes an inner pipe and an outer pipe, and the inner pipe is slidably connected with the outer pipe.

Based on the technical characteristics, the arrangement of the telescopic pipe avoids the shock absorption supporting spring from being excessively distorted, and prolongs the service life of the shock absorption supporting spring.

Preferably, in the exhaust pipe of the diesel internal combustion engine, a sealing cover is installed at the air outlet end of the exhaust pipe in a threaded manner, an exhaust hole is formed in the center of the sealing cover, and a fastening spring for fastening the silencing pipe is fixedly connected to the inner side surface of the sealing cover.

Based on the technical characteristics, the arrangement of the sealing cover avoids external sundries from entering the exhaust pipe, and the arrangement of the fastening spring avoids the silencing pipe from loosening.

The utility model has the advantages that:

the utility model has the advantages of reasonable design, adopt the detachable mounting means, be convenient for clear up the carbon deposit smoke and dust in the exhaust pipe, can clear up the inside carbon deposit smoke and dust of exhaust duct effectively, avoided the inside emergence of exhaust duct to block up, improved exhaust duct's noise reduction effect greatly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an enlarged schematic structural diagram of the structure a of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-an exhaust pipe; 2-a gas-guide tube; 3-a sound-damping assembly; 4-a muffler pipe; 5-a shock-absorbing support spring; 6, installing a cavity; 7-a ball bearing; 8-ring scraper; 9-a guide tube; 10-a drain hole; 11-a sound-deadening hole; 12-a telescopic tube; 13-an inner tube; 14-an outer tube; 15-sealing cover; 16-air vent; 17-fastening the spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, the present embodiment is an exhaust pipe of a diesel internal combustion engine, including an exhaust pipe 1, an air inlet end of the exhaust pipe 1 is connected with an air guide pipe 2, a water drain hole 10 is disposed at a bottom of the air inlet end of the exhaust pipe 1, the water drain hole 10 is disposed to drain accumulated water in the exhaust pipe 1, so as to prevent the accumulated water from corroding the water drain pipe 1, an inner end of the air guide pipe 2 is in threaded connection with a silencing assembly 3, the silencing assembly 3 is in sliding contact with an inner wall of the exhaust pipe 1, the silencing assembly 3 includes a silencing pipe 4 threadedly mounted on the air guide pipe 2, a sealing cover 15 is threadedly mounted at an air outlet end of the exhaust pipe 1, a vent hole 16 is disposed at a center of the sealing cover 15, a fastening spring 17 for fastening the silencing pipe 4 is fixedly connected to an inner side, the looseness of the silencing pipe 4 is avoided, the round table-shaped guide pipe 9 is connected between the air guide pipe 2 and the exhaust pipe 1, the guide pipe 9 is arranged to facilitate the silencing pipe 4 to enter the air guide pipe 2 along the inclined plane of the inner wall of the guide pipe 9, the circumferential surface of the silencing pipe 4 side is uniformly provided with a plurality of silencing holes 11, the silencing holes 11 are arranged to reduce the smoke exhaust noise energy of the diesel internal combustion engine, so that the purposes of noise reduction and silencing are achieved, the circumferential surface of the silencing pipe 4 side is uniformly provided with a plurality of damping support springs 5, the inner part of each damping support spring 5 is provided with a telescopic pipe 12, each telescopic pipe 12 comprises an inner pipe 13 and an outer pipe 14, the inner pipe 13 is in sliding connection with the outer pipe 14, the arrangement of the telescopic pipe 12 avoids the damping support springs 5 from being excessively distorted, the service life of the damping support springs 5 is prolonged, slidable mounting has ball 7 in installation cavity 6, and

ball

7 and 6 inner walls of installation cavity are full to be satisfied with, and fixed mounting has annular scraper 8 on installation cavity 6, and

annular scraper

8 and 7 lateral surfaces laminating of ball and sliding contact.

The utility model discloses a concrete implementation, when using, noise elimination subassembly 3 adopts the mode of screw thread installation to be connected with air duct 2, and design when elastic expansion can provide good buffering shock attenuation effect for muffler pipe 4, cooperates fastening spring 17's spacing fastening simultaneously, can carry out firm fixed to muffler pipe 4. The utility model has the advantages of reasonable design, adopt the detachable mounting means, be convenient for clear up the carbon deposit smoke and dust in the blast pipe 1, can clear up the inside carbon deposit smoke and dust of exhaust duct effectively, avoided the inside emergence of exhaust duct to block up, improved exhaust duct's noise reduction effect greatly.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An exhaust pipe for a diesel internal combustion engine, characterized in that: comprises an exhaust pipe (1), an air inlet end of the exhaust pipe (1) is connected with an air duct (2), the inner end of the air duct (2) is connected with a silencing component (3) through screw threads, the silencing component (3) is in sliding contact with the inner wall of the exhaust pipe (1), the silencing component (3) comprises a silencing pipe (4) which is installed on the air guide pipe (2) in a threaded manner, a plurality of damping supporting springs (5) are uniformly arranged on the circumferential surface of the side of the silencing pipe (4), the outer end of the shock absorption supporting spring (5) is fixedly connected with a spherical mounting cavity (6), a ball (7) is arranged in the mounting cavity (6) in a sliding way, the balls (7) are in full fit with the inner wall of the mounting cavity (6), an annular scraper (8) is fixedly mounted on the mounting cavity (6), and the annular scraper (8) is attached to the outer side surface of the ball (7) and in sliding contact with the outer side surface of the ball.

2. An exhaust pipe for a diesel internal combustion engine according to claim 1, characterized in that: a circular truncated cone-shaped guide tube (9) is connected between the air guide tube (2) and the exhaust tube (1).

3. An exhaust pipe for a diesel internal combustion engine according to claim 1, characterized in that: and a drain hole (10) is formed at the bottom of the air inlet end of the exhaust pipe (1).

4. An exhaust pipe for a diesel internal combustion engine according to claim 1, characterized in that: the side circumferential surface of the silencing pipe (4) is uniformly provided with a plurality of silencing holes (11).

5. An exhaust pipe for a diesel internal combustion engine according to claim 1, characterized in that: a telescopic pipe (12) is arranged inside the damping support spring (5), the telescopic pipe (12) comprises an inner pipe (13) and an outer pipe (14), and the inner pipe (13) is connected with the outer pipe (14) in a sliding mode.

6. An exhaust pipe for a diesel internal combustion engine according to claim 1, characterized in that: the exhaust pipe (1) is provided with a sealing cover (15) at the air outlet end, an exhaust hole (16) is formed in the center of the sealing cover (15), and a fastening spring (17) used for fastening the silencing pipe (4) is fixedly connected to the inner side surface of the sealing cover (15).