CN2866845Y - Muffler - Google Patents

Abstract

The utility model relates to a silencer used in motorcycle, comprising a silencing pot, a vent-pipe and accelerants, the silencing pot is to welded a retention flange on out pot connected to the vent-pipe tap, corresponding to the vent-pipe is provided a movable flange, the silencing pot and the back part of the vent-pipe are connected integrally with two flange bolts, an accelerant is provided in the silencing pot and on the connection port; the vent-pipe is divided to two parts, whose taps are welded on a retention flange and a movable flange respectively, the two flanges are connected integrally with bolts, the other accelerant is provided in the connection port of one part of the vent-pipe. The exhaust silencer is capable of purifying the waste gas through it from an engine more effectively, thereby improving the quality of waste gas exhausting of engines of motorcycles, meantime, accelerants inside are capable of being taken off and replaced easily and conveniently, firmly, installed reliably, spent less.

Description

Silencing apparatus

Technical field

The utility model relates to a kind of exhaust muffler for motorcycle.

Background technique

Exhaust muffler for motorcycle is the device that is used to handle the motorcycle engine toxic emission, to reduce noise and the toxic emission pollution on the environment that motor produces.Exhaust silencer is formed by connecting by outlet pipe and silencing apparatus, and in outlet pipe or silencing apparatus catalyst is installed.Catalyst is that the centre is cellular cylindrical body, be used for the purifying engine exhaust gas discharged, it just can play good waste-gas cleaning effect in the time of must reaching uniform temperature at the waste gas of engine emission, and its waste-gas cleaning ability reduces on the contrary when exhaust gas temperature is too high.

The catalyst of installing in the existing exhaust muffler for motorcycle or be installed in the outlet pipe, or be installed in the interior pipe of silencing apparatus.Be installed in the exhaust silencer in the pipe in the silencing apparatus for catalyst, because catalyst is far away apart from engine exhaust port, start working the stage at motor, the temperature of silencing apparatus position, catalyst place waste gas can not be increased to rapidly catalyst can proper functioning temperature, make catalyst carry out effective purified treatment, thereby make this exhaust silencer relatively poor in the exhaust emission quality at engine start initial stage to the waste gas that motor is discharged.Be installed in exhaust silencer in the outlet pipe for catalyst, because catalyst is nearer apart from engine exhaust port, start working the stage at motor, the temperature of outlet pipe position, catalyst place waste gas is higher, so can make catalyst get started the effect of purifying exhaust air, and not have the toxic emission of a time period without effective purified treatment.But, along with the work of motor long period, outlet pipe position, catalyst place exhaust gas temperature is too high, will cause the waste-gas cleaning ability of catalyst to reduce, the waste gas that motor is discharged can not get effective purified treatment, so the exhaust emission quality of this kind exhaust silencer is also relatively poor.

In the motorcycle using process, because working life that is far longer than catalyst working life of exhaust silencer, so often when exhaust silencer still can normally use, catalyst is but scrapped.Because existing exhaust silencer catalyst installed position tube and tube (outlet pipe and outlet pipe, or outlet pipe and silencing apparatus) between be to be connected as a single entity by welding, so the catalyst scrapped can not take out in the exhaust silencer and change, like this, owing to causing whole exhaust silencer, scrapping of catalyst scrap, and this moment, silencing apparatus did not also reach working life far away, so the structure of existing exhaust silencer has caused the significant wastage of resource.

The model utility content

Technical problem to be solved in the utility model provides a kind of silencing apparatus, make motorcycle can access more efficiently purified treatment through the engine exhaust of its discharge, to promote the exhaust emission quality of motorcycle engine, make retracting of catalyst in it change simple and convenient and install reliable simultaneously.

Silencing apparatus described in the utility model, comprise silencing pot with urceolus and interior pipe, and the outlet pipe that is connected with silencing pot, catalyst is installed in the silencing apparatus, its silencing pot with the urceolus of outlet pipe connecting end on be welded with fixed flange, outlet pipe then correspondence is provided with moving flange plate, silencing pot and outlet pipe are connected as a single entity with bolt by two flange plate, catalyst be installed in silencing pot in, be positioned at the connecting port; Outlet pipe is divided into two sections, and the connecting end of two sections outlet pipes welds fixed flange and establish moving flange plate respectively, and two flange plate are connected as a single entity with bolt, and another catalyst is installed in the connecting port of one section outlet pipe wherein.

Described silencing pot with the flange plate of the connecting end of outlet pipe connecting end and/or two sections outlet pipes, the mouth of pipe of its moving flange plate end is welded with protruding circle, fixed flange end correspondence establishes recessed circle and endoporus is made as step hole, described protruding circle is arranged in this endoporus and mutual Spielpassung, and is provided with seal ring between protruding circle end face and this endoporus step end face.

The catalyst that described silencing pot is installed is axially located by the end face of interior pipe between silencing pot port and interior pipe, thereby realizes that the installation of catalyst in silencing pot is spacing.

The utility model all is equipped with catalyst in outlet pipe with in the silencing pot, start working the stage in motorcycle engine, because the catalyst that is installed in the outlet pipe is nearer apart from engine exhaust port, the waste gas that motor is discharged is higher in the temperature at this catalyst place, thereby makes this catalyst can carry out effective purified treatment to waste gas at the engine start initial stage; And in engine operation after a period of time, when catalyst place exhaust gas temperature in the outlet pipe too high and when causing this catalyst that the waste-gas cleaning Processing capacity is reduced, the temperature that is installed in catalyst place waste gas in the silencing pot raises, and the catalyst in the pipe can carry out effective purified treatment to waste gas in the silencing pot thereby make.So silencing apparatus of the present utility model begins to start in the entire work process that finishes to operation in motorcycle engine, all can carry out effective purified treatment, thereby make the exhaust emission quality of motorcycle engine be able to further lifting with this kind exhaust silencer to the waste gas that motor is discharged.

Because big displacement motorcycle engine exhaust gas discharged temperature is higher, the mounting point of catalyst can be far away apart from engine exhaust port in the outlet pipe, can satisfy the required temperature of catalyst proper functioning too,, be suitable for the motorcycle engine of big discharge capacity so catalyst is installed in the outlet pipe stage casing.

Because connecting end at outlet pipe and silencing pot, and two sections outlet pipe ports all are welded with flange plate and moving flange plate are set, by flange plate with bolt with outlet pipe and silencing pot, and two sections outlet pipes connect as one, make outlet pipe and silencing pot, and two sections outlet pipes all are easy to dismounting, thereby are convenient to the dismounting and change of the catalyst of silencing apparatus.When catalyst is scrapped, only need to change catalyst, silencing apparatus still can continue to use, so can not cause the waste of resource.Cooperating between the protruding circle on the flange plate and the endoporus, two sections outlet pipes can conveniently be located, be beneficial to the connection of two sections outlet pipes, increased by reliability and intensity that two flange plate connect simultaneously, and this adpting flange accuracy of manufacturing requirement is low, and makes cost low.The catalyst that silencing pot is installed axially by the end face location of interior pipe, can make catalyst realize reliable the installation in outlet pipe between silencing pot port and interior pipe.

Description of drawings

Now in conjunction with the accompanying drawings the utility model is described in further detail.

Fig. 1 looks schematic representation for the master of silencing apparatus described in the utility model;

Fig. 2 is that rotation diagram is amplified in the part at M place among Fig. 1;

Fig. 3 is the partial enlarged drawing at N place among Fig. 1.

Embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, this silencing apparatus comprises the silencing pot with urceolus 13 and interior pipe 14, and the outlet pipe that is connected with silencing pot; Silencing pot with the urceolus 13 of outlet pipe connecting end on be welded with fixed flange 3, the outlet pipe then correspondence activity of establishing has flange plate 2, silencing pot and outlet pipe are connected as a single entity by two flange plate, 2,3 usefulness bolts 4, catalyst 16 be installed in silencing pot in, between the silencing pot port and interior pipe 14 of connecting port, axially locate by the end face of interior pipe 14.

Outlet pipe is divided into two sections, front exhaust pipe 1 and back segment outlet pipe 6, the connecting end of two sections outlet pipes 1,6 welds fixed flange 3 respectively and establishes moving flange plate 2, two flange plate 2,3 usefulness bolts 4 and is connected as a single entity, and another catalyst 5 is installed in the port of one section outlet pipe 6 link position wherein.

Above-mentioned silencing pot with the flange plate of two positions of connecting end of outlet pipe connecting end and two sections outlet pipes 1,6, all adopt protruding circle 8 of mouth of pipe welding with moving flange plate 2 ends, and fixed flange 3 end correspondences are established recessed circle 10 and endoporus is made as step hole, when connecting between the flange plate 2,3, moving flange plate 2 end faces are oppressed protruding circle 8 engagement concavity circles 10, realize connecting, at this moment protruding circle 8 is arranged in recessed circle 10 endoporus and mutual Spielpassung; And be provided with seal ring 7 between protruding circle 8 end faces and recessed circle 10 endoporus step end faces, prevent gas leakage.

Claims (3)

1, a kind of silencing apparatus, the silencing pot that comprises have urceolus (13) and interior pipe (14), and the outlet pipe that is connected with silencing pot, catalyst (5,16) is installed in the silencing apparatus, it is characterized in that: silencing pot with the urceolus (13) of outlet pipe connecting end on be welded with fixed flange (3), outlet pipe then correspondence is provided with moving flange plate (2), silencing pot and outlet pipe are connected as a single entity with bolt (4) by two flange plate (2,3), a catalyst (16) be installed in silencing pot in, be positioned at the connecting port; Outlet pipe is divided into two sections, the connecting end of two sections outlet pipes (1,6) welds fixed flange (3) respectively and establishes moving flange plate (2), two flange plate (2,3) are connected as a single entity with bolt (4), and another catalyst (5) is installed in the connecting port of one section outlet pipe (6) wherein.

2, silencing apparatus according to claim 1, it is characterized in that: above-mentioned silencing pot with the flange plate of the connecting end of outlet pipe connecting end and/or two sections outlet pipes (1,6), the mouth of pipe of its moving flange plate (2) end is welded with protruding circle (8), fixed flange (3) end correspondence establishes recessed circle (10) and endoporus is made as step hole, described protruding circle is arranged in this endoporus and mutual Spielpassung, and is provided with seal ring (7) between protruding circle end face and this endoporus step end face.

3, silencing apparatus according to claim 2 is characterized in that: the catalyst (16) that described silencing pot is installed is positioned between silencing pot port and the pipe (14), is axially located by the end face of interior pipe (14).

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