CN2844466Y - Waste-gas secondary recovering valve of motorcycle - Google Patents

Abstract

The utility model discloses a waste-gas secondary recovering valve of a motorcycle, which comprises a perforated cylindrical valve body. An air inlet and an air outlet are arranged at both ends of the same axial cord on the valve body. Waste gas enters a third-degree hole to be accumulated and compressed through the air inlet, a shunting valve cap and an air inlet through hole. When pressure is strong enough to overcome the elastic force of a resetting spring on the right side of the one-way valve cap, the one-way valve cap is opened, and the waste gas enters a counterbore and is guided to the air outlet from an outlet through hole to be discharged. Because the valve body of the secondary recovering valve is designed to be cylindrical, and the air inlet and the air outlet are on the same axial cord, therefore the utility model has the advantages of simple and compact structure, smaller volume, convenient installation and no influence on the appearance of the motorcycle. In addition, sealing rings which are arranged between an end cap of the air inlet and the valve body as well as an end cap of the air outlet and the valve body can effectively avoid the phenomenon of leakage.

Description

Motorcycle waste gas secondary recovery valve

Technical field

The utility model relates to a kind of motorcycle waste gas cleaning plant, particularly a kind of motorcycle waste gas secondary recovery valve.

Background technique

Include the imperfect combustion harmful gas of part in the waste gas that when motorcycle engine is worked, produces; for reduce these content of harmful gas in the final tail gas of discharging as far as possible; usually can before waste gas is discharged, will wherein a part ofly introduce in the engine chamber once more by the secondary recovery valve; through after the secondary combustion just again by outside the outlet pipe discharge machine; because the loose complexity of existing secondary recovery valve overall structure; suction port and relief opening be not on same axis; so volume is bigger; install inconvenient; and influence the motorcycle outward appearance; in addition; the air intake of this secondary recovery valve is to adopt steel part and alloy die cast aluminium parts to make up through hot pressing; because the thermal expansion coefficient difference of these two kinds of different metallic material, when motorcycle engine was worked, two parts were because of the back expansion coefficient difference of being heated; leakage phenomenon can appear in its connecting part; use motorcycle power to descend, insufficient to the purification of waste gas, the environmental requirement that does not reach exhaust emissions.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provide a kind of structural design simple compact, volume is little, easy for installation, can prevent the motorcycle waste gas secondary recovery valve that leaks after being heated.

The technological scheme that its technical problem that solves the utility model adopts is:

Motorcycle waste gas secondary recovery valve, the cylindrical valve body that comprises perforation, described valve body left end is fixedly connected with the suction port end cap, the suction port end cap the other end is provided with suction port, the valve body right-hand member is fixedly connected with the exhaust end cap, the exhaust end cap the other end is provided with relief opening, valve body left end internal orifice dimension reduces to form three grades of shoulder holes successively, in hole, the second level, closely be fixed with dividing plate one, dividing plate one bottom surface is near the left side in third level hole, and be provided with the air inlet through hole at aperture, third level hole place, the shunting valve gap that can cover hole, the second level is housed in the described first order hole, shunting valve gap right-hand member is connected and is coated with the valve rod of retaining spring, the valve rod end is slidably run through dividing plate and is locked in the lump, leave the gap between described shunting valve gap edge and first order hole inwall, described valve body right-hand member endoporus is provided with counterbore, closely be fixed with dividing plate two in the counterbore, between dividing plate two and right side, third level hole unidirectional valve gap is housed, the valve gap left side closely covers third level hole, unidirectional valve gap right side is connected and is coated with the valve rod of Returnning spring, dividing plate two and locking are slidably run through in the valve rod end, and described dividing plate two is provided with exhaust hole.

As the utility model preferred embodiment, described dividing plate two and unidirectional valve cover chamber also are fixed with dividing plate three, have through hole with corresponding section, third level hole on the described dividing plate three, and described unidirectional valve gap left side covers through hole.

As few improvement of advancing to above-mentioned mode of execution, described valve body left end and suction port end cap be with the tight socket of interference fit, and right-hand member and exhaust end cap are by being threaded, and suction port end cap and exhaust end cap inwall are provided with seal groove, and seal ring is housed in the seal groove.

The beneficial effects of the utility model are: because the valve body of this secondary recovery valve is cylindricality, wherein suction port and relief opening are installed in the two ends of same axis on the valve body, waste gas enters in the hole, the second level between shunting valve gap and first order hole wall after entering suction port equably, air inlet through hole from the dividing plate one enters in the third level hole again, because this moment, third level hole right-hand member was closely covered by unidirectional valve gap, so waste gas is assembled in third level hole and is compressed, when pressure is enough to overcome the Returnning spring elastic force on unidirectional valve gap right side, unidirectional valve gap is backed down, waste gas enters in the counterbore, and by equably from the dividing plate two set exhaust hole cause that relief opening discharges, in use, when the exhausted air quantity that enters suction port is excessive, waste gas is to the elastic force of shunting valve gap applied pressure greater than retaining spring, at this moment shunt the left end face that valve gap compresses hole, the second level to the right, thereby reach the effect of sealing secondary recovery valve, this secondary recovery valve is because valve body is designed to cylindricality, suction port and relief opening are on same axis, so it is simple and compact for structure, volume is less relatively, so it is easy for installation, can not influence the motorcycle outward appearance yet, in addition, the generation that set seal ring can effectively be stopped leakage phenomenon between suction port end cap and exhaust end cap and valve body.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a kind of embodiment's of the utility model an overall structure sectional view.

Embodiment

With reference to Fig. 1, motorcycle waste gas secondary recovery valve, the cylinder shape valve 1 that comprises perforation, described valve body 1 left end closely is socketed with suction port end cap 2 with interference fit, suction port end cap 2 the other ends are provided with suction port 21, valve body 1 right-hand member is fixed with exhaust end cap 3 by screw thread, exhaust end cap 3 the other ends are provided with relief opening 31, suction port end cap 2 and exhaust end cap 3 inwalls are provided with seal groove 22,32, seal groove 22, seal ring 23 is housed in 32,33, valve body 1 left end internal orifice dimension reduces to form three grades of shoulder holes successively, in hole, the second level 12, closely be fixed with dividing plate 1, dividing plate one 41 bottom surfaces are near the left side in third level hole 13, and be provided with air inlet through hole 411 at 13 apertures, third level hole places, the shunting valve gap 42 that can cover hole, the second level 12 is housed in the described first order hole 11, the valve rod 44 that shunting valve gap 42 right-hand members are connected and are coated with retaining spring 43, dividing plate 1 and locking are slidably run through in valve rod 44 ends, leave the gap between described shunting valve gap 42 edges and first order hole 11 inwalls, described valve body 1 right-hand member endoporus is provided with counterbore 14, closely be fixed with dividing plate 2 45 in the counterbore 14, between dividing plate 2 45 and 13 right sides, third level hole unidirectional valve gap 51 is housed, unidirectional valve gap 51 left sides closely cover third level hole 13, the valve rod 53 that unidirectional valve gap 51 right sides are connected and are coated with Returnning spring 52, dividing plate 2 45 and locking are slidably run through in valve rod 53 ends, described dividing plate 2 45 is provided with exhaust hole 451,51 of described dividing plate 2 45 and unidirectional valve gaps also are fixed with dividing plate 3 46, have through hole 461 with 13 corresponding sections, third level hole on the described dividing plate 3 46, described unidirectional valve gap 51 left sides cover through hole 461.

When state of rest, shunting valve gap 42 is because the effect of retaining spring 43, unsettled in first order hole 11, unidirectional valve gap 51 closely covers first order hole 11 right-hand members because of acting on of Returnning spring 52, making time spent waste gas enters and enters in the hole, the second level 12 between the inwall in shunting valve gap 42 and first order hole 11 from suction port 21, evenly enter in the third level hole 13 by the air inlet through hole 411 on the dividing plate 1 again, after having assembled abundant waste gas, exhaust gas pressure overcomes the elastic force effect of Returnning spring 52, unidirectional valve gap 51 slides to the right, the through hole 461 of waste gas on dividing plate 3 46 enters counterbore 14, enter relief opening 31 by the exhaust hole on the dividing plate 2 45 451 again, and when the exhausted air quantity that is entered by suction port 21 is excessive, exhaust gas pressure makes shunting valve gap 42 slide to the right greater than the elastic force of retaining spring 43, and finally press the left side in hole, the second level 12, thereby reach the purpose of sealing secondary recovery valve.

Claims (3)

1. motorcycle waste gas secondary recovery valve, it is characterized in that comprising the cylindrical valve body (1) of perforation, the sealing of described valve body (1) left end is fixedly connected with suction port end cap (2), suction port end cap (2) the other end is provided with suction port (21), the sealing of valve body (1) right-hand member is fixedly connected with exhaust end cap (3), exhaust end cap (3) the other end is provided with relief opening (31), valve body (1) left end internal orifice dimension reduces to form three grades of shoulder holes successively, in hole, the second level (12), closely be fixed with dividing plate one (41), dividing plate one (41) bottom surface is near the left side of third level hole (13), and be provided with air inlet through hole (411) at aperture, third level hole (13) place, the shunting valve gap (42) that can cover hole, the second level (12) is housed in the described first order hole (11), the valve rod (44) that shunting valve gap (42) right-hand member is connected and is coated with retaining spring (43), dividing plate one (41) and locking are slidably run through in valve rod (44) end, leave the gap between described shunting valve gap (42) edge and first order hole (11) inwall, described valve body (1) right-hand member endoporus is provided with counterbore (14), closely be fixed with dividing plate two (45) in the counterbore (14), between dividing plate two (45) and right side, third level hole (13) unidirectional valve gap (51) is housed, unidirectional valve gap (51) left side closely covers third level hole (13), the valve rod (53) that unidirectional valve gap (51) right side is connected and is coated with Returnning spring (52), dividing plate two (45) and locking are slidably run through in valve rod (53) end, and described dividing plate two (45) is provided with exhaust hole (451).

2. motorcycle waste gas secondary recovery valve according to claim 1, it is characterized in that also being fixed with dividing plate three (46) between described dividing plate two (45) and unidirectional valve gap (51), described dividing plate three (46) goes up and corresponding section, third level hole (13) has through hole (461), and described unidirectional valve gap (51) left side covers through hole (461).

3. motorcycle waste gas secondary recovery valve according to claim 1 and 2, it is characterized in that described valve body (1) left end and suction port end cap (2) are with the tight socket of interference fit, right-hand member and exhaust end cap (3) are by being threaded, suction port end cap (2) and exhaust end cap (3) inwall are provided with seal groove (22,32), and seal ring (23,33) is housed in the seal groove (22,32).