CN206092113U - Muffler - Google Patents

Abstract

The utility model provides a muffler which includes casing, first end cover and second end cover, first baffle and second baffle and pipe. The pipe includes first body and second body, wherein first body with link together second body axial slidable to can absorb the deformation. First body is equipped with the flexion and the flaring of S -shaped, the flexion is equipped with and exposes export on the first end cover. The second body is equipped with to extend goes into expand intraoral connecting portion and expose entry on the second end cover. Muffler still is equipped with the connection and is in pitch pipe on the second body and installing just be located on the second body siphon in the third cavity is in order to realize better drainage ability.

Description

Acoustic filter

Technical field

This utility model is related to a kind of acoustic filter, belongs to engine exhaust post-processing technology field.

Background technology

High-temperature exhaust air in acoustic filter easily makes element that mechanically deform occurs, so as to cause the cracking of welding position.According to The requirement of durability, requires consideration for how to solve above-mentioned technical problem in muffler desing.In addition, in order to avoid because of condensed water Etching problem in the abnormal sound that may be brought and acoustic filter, often using the design that osculum is beaten on end cap in prior art. But this design easily produces corrosion because of the long-term draining of end cap.

Utility model content

The purpose of this utility model is to provide a kind of acoustic filter that can be absorbed and deform and be easy to draining.

For achieving the above object, this utility model is adopted the following technical scheme that：A kind of acoustic filter, it is included by a nugget category Housing that plate is curled into, the first end cap and the second end cap respectively positioned at the housing two ends, in the housing the One baffle plate and second baffle and the conduit through first end cap and second end cap, wherein being provided with position in the housing The first cavity between first end cap and the first baffle, between the first baffle and the second baffle The second cavity and the 3rd cavity between the second baffle and second end cap, the conduit include first pipe Body and the second body connected together with first body, first body is axially slidable with second body Link together, first body is provided with bending section and the enlarging of S-shaped, wherein the crooked position is in first chamber In vivo, the enlarging is located in second cavity, and the bending section is provided with the outlet being exposed on the first end lid；It is described Second body is provided with the connecting portion extended in the enlarging and the entrance being exposed on second end cap；The acoustic filter The pitch pipe being connected on second body is provided with, wherein the pitch pipe extends through described second from the 3rd cavity Baffle plate and the first baffle with first cavity being connected；The acoustic filter is additionally provided with second body And the siphon in the 3rd cavity.

Used as the further improved technical scheme of this utility model, the siphon is put down with the type face of second body Together.

Used as the further improved technical scheme of this utility model, the periphery of the connecting portion is socketed with steel wool, described Steel wool mechanical grip is in the enlarging.

Used as the further improved technical scheme of this utility model, the entrance is located on the axis of the acoustic filter, institute State the axis that outlet deviates the acoustic filter.

Used as the further improved technical scheme of this utility model, first body passes through the first baffle, described Second body passes through the second baffle.

Used as the further improved technical scheme of this utility model, the pitch pipe is provided with opening near first end cap Mouthful.

As the further improved technical scheme of this utility model, the acoustic filter be provided be welded on the first baffle with Bracing piece between the second baffle.

Compared to prior art, this utility model by the first body and the second body by being axially slidably connected to one Rise, deformation can be absorbed；In addition, can realize preferable drainage performance and avoid to begin to rehearse on end cap by arranging siphon Water hole.

Description of the drawings

Fig. 1 is the schematic perspective view of this utility model acoustic filter.

Fig. 2 is the schematic perspective view of another angles of Fig. 1.

Fig. 3 is the part isometric exploded view of Fig. 1.

Fig. 4 is the further three-dimensional exploded views of Fig. 3.

Fig. 5 is to remove the schematic perspective view in Fig. 1 after housing and end cap.

Fig. 6 is the profile of the line A-A along Fig. 1.

Fig. 7 is the front view of Fig. 5.

Fig. 8 is the profile of the line B-B along Fig. 7.

Specific embodiment

Please join shown in Fig. 1 to Fig. 8, this utility model discloses a kind of acoustic filter 100, it is included by one piece of metal plate coils song The housing 1 of formation, the first end cap 11 and the second end cap 12 respectively positioned at the two ends of the housing 1, in the housing 1 the One baffle plate 21 and second baffle 22 and the conduit 3 through first end cap 11 and second end cap 12, wherein the shell The first cavity 10 between first end cap 11 and the first baffle 21 is provided with body 1, positioned at the first baffle The second cavity 20 between 21 and the second baffle 22 and between the second baffle 22 and second end cap 12 The 3rd cavity 30.

The conduit 3 includes the first body 31 and the second body 32 connected together with first body 31.Institute Bending section 311 and enlarging 312 that the first body 31 is provided with S-shaped are stated, wherein the bending section 311 is located at first cavity 10 Interior, the enlarging 312 is located in second cavity 20, and the bending section 311 is provided with and is exposed on first end cap 11 Outlet 313.Second body 32 is provided with the connecting portion 321 that extends in the enlarging 312 and is exposed to second end Entrance 322 on lid 12.In this utility model embodiment illustrated, first body 31 and the axle of the second body 32 To being slidably connected together, wherein the periphery of the connecting portion 321 is socketed with steel wool 33, the machinery card of the steel wool 33 Hold in the enlarging 312.It is arranged such, it is possible to use first body 31 comes with sliding axially for second body 32 Absorb the impact produced by deformation.

The entrance 322 is located on the axis of the acoustic filter 1, and the outlet 313 deviates the axis of the acoustic filter 1. First body 31 passes through the first baffle 21, second body 32 to pass through the second baffle 22.

The acoustic filter 100 is additionally provided with the pitch pipe 4 being connected on second body 32, wherein the pitch pipe 4 is certainly 3rd cavity 30 extends through the second baffle 22 with the first baffle 21 to be connected with first cavity 10. The pitch pipe 4 is provided with the opening 41 near first end cap 11.

In order to improve drainage performance, the acoustic filter 100 is additionally provided with second body 32 and positioned at described Siphon 42 in 3rd cavity 30.In this utility model embodiment illustrated, the diameter of the siphon 42 is 12 millis Rice.When air-flow flows through second body 32, using the pressure difference in the pipeline and the 3rd cavity 30 in the second body 32, will Condensed water in 3rd cavity 30 is brought in the second body 32 and flashes to aqueous vapor and flows out with air-flow, and with this possible band of hydrops is avoided The corrosion for coming and abnormal sound problem.Preferably, please join shown in Fig. 8, the siphon 42 is concordant with the type face of second body 32, Therefore while draining, moreover it is possible to effectively ensure that acoustical behavior is unaffected.

The acoustic filter 1 is additionally provided with the bracing piece 5 being welded between the first baffle 21 and the second baffle 22, with Structural strength is improved, deformation is prevented.

In addition, above example is merely to illustrate this utility model and not limits the technical side described by this utility model Case, understanding of this description should be based on person of ordinary skill in the field, although this specification is with reference to above-mentioned Embodiment has been carried out detailed description to this utility model, but, it will be understood by those within the art that, affiliated skill The technical staff in art field still can modify or equivalent to this utility model, and all are new without departing from this practicality The technical scheme of the spirit and scope of type and its improvement, all should cover in right of the present utility model.

Claims (7)

1. a kind of acoustic filter, it include by one piece of metal plate coils it is curved into housing, respectively positioned at the first of the housing two ends End cap and the second end cap, the first baffle in the housing and second baffle and through first end cap and described The conduit of two end caps, wherein the first cavity being provided with the housing between first end cap and the first baffle, The second cavity between the first baffle and the second baffle and positioned at the second baffle and second end The 3rd cavity between lid, it is characterised in that：The conduit includes the first body and connects together with first body The second body, first body axially slidably links together with second body, and first body is provided with S The bending section of shape and enlarging, wherein the crooked position is in first cavity, the enlarging is located at second cavity Interior, the bending section is provided with the outlet being exposed on the first end lid；Second body is provided with and extends in the enlarging Connecting portion and the entrance that is exposed on second end cap；The acoustic filter is provided with the tune being connected on second body Sound tube, wherein the pitch pipe extends through the second baffle and the first baffle with described from the 3rd cavity One cavity is connected；The acoustic filter is additionally provided with the siphon on second body and in the 3rd cavity Pipe.

2. acoustic filter as claimed in claim 1, it is characterised in that：The siphon is concordant with the type face of second body.

3. acoustic filter as claimed in claim 1, it is characterised in that：The periphery of the connecting portion is socketed with steel wool, the steel Velvet mechanical grip is in the enlarging.

4. acoustic filter as claimed in claim 2, it is characterised in that：The entrance is located on the axis of the acoustic filter, described Outlet deviates the axis of the acoustic filter.

5. acoustic filter as claimed in claim 4, it is characterised in that：First body passes through the first baffle, and described the Two bodys pass through the second baffle.

6. acoustic filter as claimed in claim 5, it is characterised in that：The pitch pipe is provided with opening near first end cap Mouthful.

7. acoustic filter as claimed in claim 6, it is characterised in that：The acoustic filter is provided with and is welded on the first baffle and institute State the bracing piece between second baffle.