CN210289886U

CN210289886U - Low-resistance silencer for gasoline engine

Info

Publication number: CN210289886U
Application number: CN201921532401.6U
Authority: CN
Inventors: 吕峰; 王一维
Original assignee: Changzhou Fuji Changchai Robin Gasoline Engine Co Ltd
Current assignee: Changzhou Fuji Changchai Robin Gasoline Engine Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-04-10
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a low resistance silencer of a gasoline engine, which comprises an outer shell, wherein the outer side wall of the outer shell is fixedly connected with a heat dissipation plate, the outer side wall of the heat dissipation plate is provided with a fan, the electrical input end of the fan is electrically connected with an external power supply through a wire, the bottom of the fan is provided with a heat conduction block, a pipe body is arranged inside the outer shell, the other side of the heat conduction block is attached to the pipe body, and one end of the pipe body is fixedly connected with an air inlet pipe; the compensation mechanism is arranged at the joint of the connecting pipe and the air inlet pipe, the pressing flange in the compensation mechanism fixes the connecting pipe and the outer sleeve through the fixing bolt and the fixing ring, the rubber ring is arranged at the joint of the pressing flange and the outer sleeve, the rubber ring seals the joint, and when the joint expands, the pressing flange and the rubber ring are mutually matched to seal the expansion part, so that the purpose of improving the air tightness of the silencer is achieved.

Description

Low-resistance silencer for gasoline engine

Technical Field

The utility model belongs to the technical field of the gasoline engine silencer, specifically be gasoline engine low resistance silencer.

Background

A muffler is a device that prevents sound from propagating while allowing airflow to pass through, and is an important measure for eliminating aerodynamic noise. The existing general low-resistance gasoline engine is provided with a silencer, generally in a box body structure made of metal plates, an air inlet pipe and an exhaust pipe are arranged on a silencer cylinder body and communicated with an inner cavity of the silencer, and exhaust gas discharged by an engine enters the inner cavity of the silencer through the air inlet pipe and then is discharged from the exhaust pipe.

When the existing low-resistance silencer of the gasoline engine works, because tail gas exhausted by the gasoline engine contains a large amount of heat, expansion is easy to occur at the joint of the silencer and the air inlet pipe, the air tightness of the connection between the silencer and a pipeline is poor, and the silencer works at high temperature for a long time, so that the service life of the silencer is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the problem among the background art, provide the low resistance silencer of gasoline engine.

The utility model adopts the technical scheme as follows:

low resistance silencer of gasoline engine, including the shell body, the lateral wall fixedly connected with heating panel of shell body, the fan is installed to the lateral wall of heating panel, the electrical property input end of fan passes through wire and external power source electric connection, the bottom of fan is equipped with the heat conduction piece, the internally mounted of shell body has the body, the another side of heat conduction piece with the body laminating, the one end fixedly connected with intake pipe of body, the connecting pipe is installed to the other end of intake pipe, the connecting pipe with the junction of intake pipe is equipped with compensation mechanism.

Wherein the inside of the outer shell is filled with a sound insulation layer.

The inner side wall of the tube body is fixedly connected with a partition plate and an inner insertion tube, the inner insertion tube penetrates through the outer side wall of the partition plate, and a through hole is formed in the outer side wall of the inner insertion tube.

Wherein, compensation mechanism includes solid fixed ring, pressure flange, fixing bolt, first rubber ring and outer tube, the solid fixed ring of lateral wall fixedly connected with of outer tube, the lateral wall of connecting pipe is equipped with the pressure flange, the pressure flange with gu fixed ring passes through fixing bolt connects, the pressure flange with the junction of outer tube is equipped with first rubber ring.

The connecting pipe and the air inlet pipe are both sleeved on the inner side wall of the outer sleeve, and a second rubber ring is arranged at the joint of the air inlet pipe and the outer sleeve.

The outer side wall of the heat dissipation plate is provided with heat dissipation holes.

The fan and the heat conduction blocks are four in number, and the fan and the heat conduction blocks are arranged on four faces of the outer shell.

Wherein, the heat conduction piece is close to one side of body is the arc structure.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, set up compensation mechanism through the junction at connecting pipe and intake pipe, the flange among the compensation mechanism passes through fixing bolt and retaining ring and fixes connecting pipe and outer tube, sets up the rubber ring through the junction pressing flange and outer tube again, makes the rubber ring seal the junction, when the junction takes place the inflation, mutually supports by flange and rubber ring, seals expansion department, reaches the purpose that promotes the muffler gas tightness.

2. The utility model discloses in, through installing the fan on four faces at the muffler shell body, the bottom of fan sets up the heat conduction piece, sets the junction of heat conduction piece and body to the arcwall face with the body laminating, makes the heat conduction piece derive the heat in the body to give off the heat by the fan, reach the purpose that reduces muffler operating temperature, and then promote the life of muffler.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a cross-sectional view of the compensating mechanism of the present invention;

fig. 3 is a sectional view of the muffler of the present invention;

fig. 4 is a cross-sectional view of the tube body of the present invention.

The labels in the figure are: 1. an outer housing; 2. a heat dissipation plate; 21. heat dissipation holes; 3. a fan; 4. a heat conducting block; 5. a pipe body; 51. a partition plate; 52. inserting a tube; 53. a through hole; 6. an air inlet pipe; 61. a second rubber ring; 7. a compensation mechanism; 71. a fixing ring; 72. pressing blue; 73. fixing the bolt; 74. a first rubber ring; 75. an outer sleeve; 8. a connecting pipe; 9. and a sound insulation layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Referring to fig. 1-4, gasoline engine low resistance silencer, including shell body 1, the lateral wall fixedly connected with heating panel 2 of shell body 1, fan 3 is installed to the lateral wall of heating panel 2, the electrical property input of fan 3 passes through wire and external power source electric connection, the bottom of fan 3 is equipped with heat conduction block 4, the internally mounted of shell body 1 has body 5, heat conduction block 4 the another side with the body 5 laminating, the one end fixedly connected with intake pipe 6 of body 5, connecting pipe 8 is installed to the other end of intake pipe 6, connecting pipe 8 with the junction of intake pipe 6 is equipped with compensation mechanism 7.

In the present embodiment, specifically, the sound insulation layer 9 is filled inside the outer shell 1; the material of the soundproof layer 9 is soundproof glass fiber, and the soundproof layer 9 further attenuates noise of the muffler.

In this embodiment, specifically, a partition plate 51 and an inner insertion tube 52 are fixedly connected to an inner side wall of the tube body 5, the inner insertion tube 52 penetrates through an outer side wall of the partition plate 51, and a through hole 53 is formed in an outer side wall of the inner insertion tube 52; partition plates 51 partition tube body 5 into three spaces, and a cavity is formed between inner tube 52 and tube body 5 to reduce noise by interference.

In this embodiment, specifically, the compensation mechanism 7 includes a fixing ring 71, a flange 72, a fixing bolt 73, a first rubber ring 74 and an outer sleeve 75, the outer side wall of the outer sleeve 75 is fixedly connected with the fixing ring 71, the outer side wall of the connecting pipe 8 is provided with the flange 72, the flange 72 is connected with the fixing ring 71 through the fixing bolt 73, and the joint of the flange 72 and the outer sleeve 75 is provided with the first rubber ring 74; the outer sleeve 75 connects the air inlet pipe 6 and the connecting pipe 8, and the flange 72 and the first rubber ring 74 compensate the expansion to avoid leakage.

In this embodiment, specifically, the connecting pipe 8 and the air inlet pipe 6 are both sleeved on the inner side wall of the outer sleeve 75, and a second rubber ring 61 is arranged at the joint of the air inlet pipe 6 and the outer sleeve 75; the second rubber ring 61 seals the air inlet tube 6 and the outer sleeve 75.

In this embodiment, specifically, the outer side wall of the heat dissipation plate 2 is provided with a heat dissipation hole 21; by arranging the heat dissipation holes 21, the heat dissipation efficiency of the silencer is further improved.

In this embodiment, specifically, four fans 3 and four heat-conducting blocks 4 are arranged, and the fans 3 and the heat-conducting blocks 4 are arranged on four surfaces of the outer shell 1; four fans 3 dispel the heat to four heat conduction pieces 4 simultaneously, promote the radiating efficiency.

In this embodiment, specifically, one side of the heat conducting block 4 close to the pipe body 5 is an arc-shaped structure; one side is the laminating of heat conduction piece 4 of arc structure can be fine with body 5, increases heat conduction piece 4 and body 5's area of contact, promotes heat conduction efficiency.

In the embodiment, the model of the fan 3 is AD0712 MB-D70.

Working principle, refer to fig. 1-4, during the use, at first, be connected connecting pipe 8 with the gasoline engine, make gas in the gasoline engine get into in the intake pipe 6 by connecting pipe 8, gas gets into in the body 5 by intake pipe 6 again, interfere the amortization, when connecting pipe 8 is in high temperature expansion state with intake pipe 6, connecting pipe 8 extrudees first rubber ring 74 and flange 73 with outer tube 75 each other, compensate the inflation department, avoid connecting pipe 8 and intake pipe 6 to take place to leak, in the muffler work, start fan 3, make fan 3 give off the heat that heat conduction piece 4 derived, reach the purpose that reduces muffler operating temperature.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Low resistance silencer of gasoline engine, including shell body (1), its characterized in that: the utility model discloses a fan, including shell body (1), fan (3), fan input end, one end fixedly connected with intake pipe (6) of intake pipe (6), connecting pipe (8) are installed to the lateral wall fixedly connected with heating panel (2) of shell body (1), fan (3) are installed to the lateral wall of heating panel (2), the electrical input end of fan (3) passes through wire and external power source electric connection, the bottom of fan (3) is equipped with heat conduction piece (4), the internally mounted of shell body (1) has body (5), the another side of heat conduction piece (4) with body (5) laminating, the one end fixedly connected with intake pipe (6) of body (5), connecting pipe (8) are installed to the other end of intake pipe (6), connecting.

2. The low drag muffler of a gasoline engine as defined in claim 1 wherein: the interior of the outer shell (1) is filled with a sound insulation layer (9).

3. The low drag muffler of a gasoline engine as defined in claim 1 wherein: the inner side wall of the tube body (5) is fixedly connected with a partition plate (51) and an inner insertion tube (52), the inner insertion tube (52) penetrates through the outer side wall of the partition plate (51), and a through hole (53) is formed in the outer side wall of the inner insertion tube (52).

4. The low drag muffler of a gasoline engine as defined in claim 1 wherein: compensating mechanism (7) are including solid fixed ring (71), pressure flange (72), fixing bolt (73), first rubber ring (74) and outer tube (75), the solid fixed ring (71) of lateral wall fixedly connected with of outer tube (75), the lateral wall of connecting pipe (8) is equipped with pressure flange (72), pressure flange (72) with gu fixed ring (71) passes through fixing bolt (73) are connected, pressure flange (72) with the junction of outer tube (75) is equipped with first rubber ring (74).

5. The low drag muffler for a gasoline engine as defined in claim 4 wherein: the connecting pipe (8) and the air inlet pipe (6) are both sleeved on the inner side wall of the outer sleeve (75), and a second rubber ring (61) is arranged at the joint of the air inlet pipe (6) and the outer sleeve (75).

6. The low drag muffler of a gasoline engine as defined in claim 1 wherein: the outer side wall of the heat dissipation plate (2) is provided with heat dissipation holes (21).

7. The low drag muffler of a gasoline engine as defined in claim 1 wherein: the fan (3) and the heat conduction blocks (4) are four in number, and the fan (3) and the heat conduction blocks (4) are arranged on four faces of the outer shell (1).

8. The low drag muffler of a gasoline engine as defined in claim 1 wherein: one side of the heat conducting block (4) close to the pipe body (5) is of an arc-shaped structure.