CN112610301B

CN112610301B - Exhaust silencer for non-road mobile machinery and non-road mobile machinery

Info

Publication number: CN112610301B
Application number: CN202011486002.8A
Authority: CN
Inventors: 宋凯; 王洪云; 孙艳宁; 王钦玉; 兰云波
Original assignee: LOVOL Engineering Machinery Group Co Ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2022-04-01
Anticipated expiration: 2040-12-16
Also published as: CN112610301A

Abstract

The embodiment discloses an exhaust silencer for non-road mobile machinery, belongs to the silencer field, can make the silencer have the processing function to engine combustion exhaust simultaneously, including first casing, second casing, third casing and bucket body, first casing perpendicular intercommunication second casing, the silencer entry is seted up to the one end department of first casing, the silencer export is seted up to the top department of second casing, the third casing is perpendicular or the tip of slope connection first casing of keeping away from the silencer entry, bucket body intercommunication third casing.

Description

Exhaust silencer for non-road mobile machinery and non-road mobile machinery

Technical Field

The invention belongs to the field of silencers, and particularly relates to an exhaust silencer for non-road mobile machinery and the non-road mobile machinery.

Background

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The silencer is used for the airflow pipeline with noise transmission, and can attenuate or reflect the noise in the pipeline by using noise reduction devices such as pipelines and elbows with sound absorption linings or pipelines with suddenly changed sectional areas and other discontinuous acoustic impedances. The former is called resistive muffler, the latter is called reactive muffler, and there are also impedance compound mufflers.

Non-road mobile machines refer to state-of-the-art and following standard non-road mobile machines, and include, but are not limited to, excavator, bulldozer, loader, road roller, paver, grader, slotter, piling machine, forklift, crane, handling machine, tractor, and the like. For off-road mobile machinery, diesel oil or other heavy oil is generally used as fuel, and the exhaust gas discharged by the off-road mobile machinery contains more particulate matters, and the particulate matters are often accumulated in a silencer when passing through the silencer, so that the normal operation of the silencer is prevented.

The inventor finds that the exhaust muffler for the non-road mobile machine only has the muffling effect, does not have any treatment measures on particulate matters generated by combustion of an engine, and does not have the effect of reducing the smoke intensity of exhaust gas of the engine.

Disclosure of Invention

The invention provides an exhaust muffler for a non-road mobile machine and the non-road mobile machine, aiming at the defects of the prior art and enabling the muffler to be used on the non-road mobile machine and simultaneously having the function of treating the combustion exhaust of an engine.

In order to achieve the purpose, the invention is realized by the following technical scheme:

in a first aspect, an embodiment of the present invention provides an exhaust muffler for a non-road mobile machine, including a first casing, a second casing, a third casing, and a bucket, where the first casing is vertically communicated with the second casing, an inlet of the muffler is formed at one end of the first casing, an outlet of the muffler is formed at a top end of the second casing, the third casing is vertically or obliquely connected to an end of the first casing far from the inlet of the muffler, and the bucket is communicated with the third casing.

In a second aspect, the present invention also provides a particle separating apparatus including the exhaust muffler for a non-road mobile machine according to the first aspect.

The beneficial effects of the above-mentioned embodiment of the present invention are as follows:

1) according to the invention, the third shell is added to the exhaust silencer part to serve as a cyclone separation device, the exhaust flow rate reaches a certain value through the matching analysis design of the exhaust flow rate and the exhaust channel, and simultaneously a cyclone is formed, and larger particles in the exhaust are thrown onto the pipe wall of the cyclone device in a centrifugal force mode and slide down to a bucket body serving as a particle collection device at the bottom, so that the purpose of collecting the particles while silencing is achieved.

2) According to the invention, through the design of the conical structure of the bucket body, the exhaust air flow forms an upward rotational flow at the lower part of the conical cavity, the exhaust air flow rises and flows back into the silencing cabin, and is finally discharged from the exhaust tail pipe after silencing, so that the aim of silencing is achieved.

3) In the invention, a physical method is adopted to separate larger particles in the exhaust gas from the exhaust gas, thereby reducing the exhaust smoke intensity and reducing the pollution to the environment. The particulate matter in the particulate collection chamber can be cleaned regularly without additional treatment cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Figure 1 is a general schematic diagram of the present invention according to one or more embodiments,

in the figure, 1, a muffler inlet, 2, a second shell, 3, an inner shell, 4, a sub-shell, 5, a third shell, 6, a bucket, 7, a muffler outlet, 8, and a first shell.

In the figure: the spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "up" and "down" when used herein are intended to refer only to the directions of up, down, left and right in the drawings themselves, and are not intended to limit the structure, but merely to facilitate description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.

Term interpretation section: the terms "mounting," "connecting," "fixing," and the like in the present invention are to be understood in a broad sense, and for example, the terms "mounting," "connecting," "fixing," and the like may be fixed, detachable, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.

The invention provides an exhaust muffler for a non-road mobile machine, aiming at the defects of the prior art and enabling the muffler to be used on the non-road mobile machine and simultaneously having the function of treating the combustion exhaust of an engine.

Example 1

In a typical embodiment of the present invention, as shown in fig. 1, the present embodiment discloses a muffler, which includes a muffler body, a cyclone separation device communicated with the muffler body, and a particulate matter collection device communicated with the cyclone separation device, wherein the cyclone separation device is added to the exhaust muffler part, through the matching analysis design of the exhaust flow and the exhaust channel, the exhaust flow reaches a certain value, and at the same time, a cyclone is formed, and larger particulate matters in the exhaust gas are thrown onto the pipe wall of the cyclone device by using a centrifugal force, and then fall into the particulate matter collection device at the bottom.

More specifically, the muffler body in this embodiment includes two shells that are communicated with each other, and in this embodiment, the two shells are named as a first shell 8 and a second shell 2, respectively, where the first shell has a first diameter and a first length, and the second shell 2 has a second diameter and a second length; the first housing 8 and the second housing 2 are both cylindrical housings, and the central axis of the first housing 8 is perpendicular to the central axis of the second housing 2, and the second diameter may be larger than the first diameter.

The muffler outlet 7 may be opened at a side wall of the second housing 2, and the muffler inlet 1 may be opened at an end portion of the first housing, the second housing 2 being disposed at a side close to the muffler inlet 1. The muffler inlet 1 is arranged perpendicular to the central axis of the first housing 8, and the muffler outlet 7 may extend in the central axis of the first housing.

A plurality of sub-shells 4 with a third diameter are further arranged in the first shell in an annular array, and the plurality of sub-shells 4 are also cylindrical; the flow path of the fluid entering from the muffler inlet 1 may be defined between a sub-housing 4 comprising a first housing having a third diameter and a second housing 2 comprising a second diameter.

It is understood that the central axes of the plurality of sub-housings 4 are all parallel to the central axis of the first housing. The resulting structure of the annular array of sub-housings 4 may form an outer sound-absorbing wall and the plurality of sub-housings 4 may form an inner damping chamber.

More specifically, a space for fluid circulation is formed between the first shell and the plurality of sub-shells 4 in the first shell, and the side walls of the plurality of sub-shells 4 are provided with small holes for fluid to enter and exit; simultaneously, also be equipped with interior casing 3 in the first casing, in the bottom of interior casing 3 inserted first casing, the top of interior casing 3 was inserted in second casing 2, and interior casing 3 also is the tube-shape, and the aperture is seted up to interior casing 3's lateral wall for the fluid business turn over. The above is the specific configuration of the muffler body in the present embodiment, and the specific configuration of the muffler body is adapted to the cyclone separation device.

The cyclone separation device in this embodiment is cylindrical, and specifically includes a third housing 5, and it can be understood that the third housing 5 communicates with one end of the first housing far from the muffler inlet 1, and the central axis of the third housing 5 is perpendicular to the central axis of the first housing, when the fluid passes through the first housing and reaches the third housing 5, because the third housing 5 is perpendicular to the first housing, the fluid in the third housing 5 forms a rotational airflow, referred to as a cyclone, through the blocking effect of the wall of the third housing 5.

The particle collecting device in this embodiment specifically includes a conical hopper 6, and the top end of the hopper communicates with the third casing 5.

In the embodiment, through the design of the conical structure at the lower part of the cyclone device, the exhaust air flow forms upward cyclone at the lower part of the conical cavity, and the exhaust air flow rises and flows back into the silencing cabin and is finally discharged from the exhaust tail pipe after silencing; the physical method is adopted to separate larger particles in the exhaust gas from the exhaust gas, thereby reducing the smoke intensity of the exhaust gas and reducing the pollution to the environment. The particulate matter in the particulate collection chamber can be cleaned regularly without additional treatment cost.

In more detail, the plurality of sub-housings 4 are each located at a portion of the first housing remote from the muffler inlet 1, and the first housing does not pass through any one of the plurality of sub-housings 4.

In more detail, the muffler outlet 7 at the upper end of the second housing 2 is inclined in the axial direction to the second housing 2.

In this embodiment, the muffler body still serves as a main muffling portion, and the third housing 5 also plays a part of the muffling function, and through the design of the conical structure of the funnel-shaped body 6, the exhaust gas flow forms an upward rotational flow at the lower portion of the conical cavity, and the exhaust gas flow rises and flows back into the muffling cabin, and is finally discharged from the tail pipe after muffling, so that the purpose of muffling is achieved.

It can be understood that, in the present embodiment, the first casing, the second casing 2, the third casing 5 and the bucket body 6 are made of the same material, and can be made of carbon steel used in a conventional muffler; in order to fix the plurality of sub-housings 4 in the first housing, the end parts of the plurality of sub-housings 4 are communicated with a circular plate, and the circular plate is fixedly connected inside the first housing; meanwhile, both ends of the plurality of sub-housings 4 are communicated with the first housing, and the circular part is provided with circular holes for the plurality of sub-housings 4 to pass through.

It will be appreciated that the inner housing 3 within the first housing 2 is also secured within the second housing 2 using a circular plate member.

Example 2

In a typical embodiment of the present invention, a muffler is provided, which is different from embodiment 1, in embodiment 2, a guide plate is installed inside the third casing 5, the guide plate is an arc-shaped plate, and the guide plate is used for assisting a fluid to form a rotational flow in the third casing 5.

Example 3

In a typical embodiment of the present invention, a muffler is provided, and unlike embodiment 1, in embodiment 3, the bucket 6 directly communicates with the first housing.

Example 4

In an exemplary embodiment of the present invention, there is also provided an off-road mobile vehicle including a vehicle body and a muffler as described in any one of embodiments 1 to 3, the muffler being mounted to the vehicle body, the vehicle having the muffler mounted thereto, wherein the particulate content of exhaust gas discharged during operation is reduced relative to a vehicle having a conventional muffler mounted thereto.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The exhaust silencer for the non-road mobile machinery is characterized by comprising a first shell, a second shell, a third shell and a bucket body, wherein the first shell is vertically communicated with the second shell, a silencer inlet is formed in one end of the first shell, a silencer outlet is formed in the top end of the second shell, the third shell is cylindrical, the third shell is vertically or obliquely connected with the end part, far away from the silencer inlet, of the first shell, namely the central axis of the third shell is vertical to or oblique to the central axis of the first shell, the bucket body is communicated with the third shell, a guide plate is further arranged in the third shell, the guide plate is arc-shaped, the bucket body is in an inverted cone shape, an inner shell is arranged in the first shell, the inner shell is in a cylindrical shape, small holes are uniformly distributed in the side wall of the inner shell, the second shell is arranged on one side close to the silencer inlet, still be equipped with a plurality of subshells in the first casing, a plurality of subshells all are the tube-shape, and the lateral wall equipartition aperture of every subshell, and are a plurality of the equal parallel arrangement of subshell, and the axis of a plurality of subshells all is on a parallel with first casing, and the structure that obtains by a plurality of subshells annular array forms the sound absorption outer wall, insert the bottom of interior casing in the first casing, the top of interior casing inserts in the second casing.

2. An off-road mobile machine characterized by comprising the exhaust muffler for an off-road mobile machine according to claim 1.