CN201034032Y - One-way valve for exhaust gas purification of universal small-sized petrol engine - Google Patents
One-way valve for exhaust gas purification of universal small-sized petrol engine Download PDFInfo
- Publication number
- CN201034032Y CN201034032Y CNU2007201094995U CN200720109499U CN201034032Y CN 201034032 Y CN201034032 Y CN 201034032Y CN U2007201094995 U CNU2007201094995 U CN U2007201094995U CN 200720109499 U CN200720109499 U CN 200720109499U CN 201034032 Y CN201034032 Y CN 201034032Y
- Authority
- CN
- China
- Prior art keywords
- reed
- gas purification
- gasoline engine
- tail gas
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to a check valve for tail gas purification of miniature gasoline engine, comprising a housing with an air inlet hole (11) and a blowhole (21), a spring leaf (7) with a fixed end (73) and a free end (72), and a baffle (8) arranged on the back of the spring leaf (7). The housing comprises an upper housing (1) with the air inlet hole (11) and a lower housing (2) with the blowhole (21). A body (6) is arranged in the inner cavity of the housing, the air inlet (61) is covered with the spring leaf (7) close to the blowhole (21), the fixed end (73) of the spring leaf is connected with the body (6), one end of the baffle (8) closely connected with the fixed end (73) of the spring leaf (7) is arranged on the body (6), and the other end stretches along the direction of the free end (72) of the spring leaf (7). Compared with the prior art, the utility model has the advantages of simple installation, strong versatility and superior stability.
Description
Technical field
The utility model relates to a kind of one-way valve, relates in particular to a kind of single-one valve for tail gas purification of general small-size gasoline engine.
Background technique
General small-size gasoline engine is called for short universal machine, is meant non-road, as to be no more than 19KW miniature gasoline engine, is usually used in generator, water pump, mowing machine, chain saw, cutting machine etc.
Along with being extensive use of of general small-size gasoline engine, its discharge tail gas has become one of main source of pollution of atmosphere.The U.S. and european research result show: along with the effect of road vehicle emission control is remarkable day by day, the discharging that occupies backseat and the less non-road motor that receives publicity has originally become main pollution sources.U.S. EPA announces, in road vehicle in 2000 and the non-road dynamic power machine total release:
1. CO about 37% is from non-road motor, and wherein 62% from general small-size gasoline engine;
2. HC about 50% is from non-road motor, and wherein 40% from general small-size gasoline engine;
3. NOX about 41% is from non-road motor;
4. particulate matter about 66% is from non-road motor, and wherein 11% from general small-size gasoline engine.
Universal machine tail gas has caused the great attention of various countries to the pollution of environment, and formulated strict emission limit, at present in the world universal machine discharge pollutants that limit value carries out U.S. EPA II stage criterion arranged, the California, USA standard, Europe II stage criterion etc., but when China's miniature gasoline engine output is increased sharply, so far there are not Abgasgesetz and mature technique that it is controlled, not only bad for the raising of China's quality of product and the improvement of atmospheric mass, and seriously restrict the outlet of China's product.
Along with the increasingly stringent of universal machine Abgasgesetz and the needs of control atmosphere pollution, force the researcher that it has been carried out the exploitation and the improvement of a large amount of new technologies.The tail gas clean-up technology of universal machine mainly is to install catalyzer in silencing apparatus additional at present, and engages with the improvement of Carburetor adjustment and engine structure.Can reduce the petrol engine discharge of harmful gases although it is so, but want to reach rules limit value standard, often increase bigger cost, the amount of oxygen deficiency has a strong impact on catalytic effect in the exhaust emissions, and a lot of petrol engine still can not reach standard limited value after installing catalyzer additional; If take other emission controls by improving combustion measures, not only can increase considerably cost, influence every performance of motor again easily, make problems such as its emergent power decline, performance degradation, oil consumption increase.
For this reason, disclose some recently and utilized the one-way valve air inlet, the way of double purification air is handled general small-size gasoline engine tail gas pollution problem.With reference to Chinese utility model patent: ZL200320125904.4, a kind of " miniature gasoline engine secondary air inlet waste gas cleaning plant " (publication number: CN2665368Y) is disclosed, this patent is achieved by following technical proposals, cylinder head is connected with valve mechanism cover, described cylinder head is provided with relief opening, it is characterized in that, described valve mechanism cover is provided with one-way valve, described one-way valve one end is fixed with banking stop, the vent that is provided with on described one-way valve and the cylinder head links to each other, described cylinder head is provided with air vent, and described air vent links to each other with described vent and described relief opening respectively.This patent directly is located at one-way valve on the body, and one-way valve is not the split design, trouble is installed, so versatility is poor; Simultaneously, noise was big when this design was used, and influenced working environment, and the design of one-way valve is too simple, poor stability.
Again with reference to Chinese utility model patent: ZL200520035995, a kind of " tail gas purification of general small-size gasoline engine device " (publication number: CN2849177Y) is disclosed, comprise the silencing apparatus and/or the outlet pipe which is provided with waste gas inlet and waste gas air outlet on this patent structure, it is characterized in that: also be provided with on outlet pipe or the silencing apparatus and only can allow air enter one-way valve in it.This patent one-way valve and silencing apparatus split design, cost is higher, and one-way valve structures and aforementioned disclosed document are identical simultaneously, and trouble is installed, poor stability, the weak deficiency of versatility still exists.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of single-one valve for tail gas purification of general small-size gasoline engine at the above-mentioned state of the art, and this one-way valve independence body on various types of petrol engine, and is installed fast.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: this single-one valve for tail gas purification of general small-size gasoline engine, comprise housing with inlet hole and air outlet hole, have fixed end and free-ended reed and be located at the plate washer at the reed back side, it is characterized in that described housing comprises upper shell and lower shell body, described inlet hole is located on the upper shell, described air outlet hole is located on the lower shell body, upper shell and lower shell body form inner chamber, this inner chamber is provided with a body, the suction port of this body communicates with the inlet hole of upper shell, described reed is covered on the aforementioned suction port near air outlet hole, the fixed end of reed is connected on the aforementioned body, the fixed end that one end of described plate washer is close to reed is arranged on the aforesaid body, and the other end opens along the free end direction of reed.
Described inlet hole can be vertical mutually with described air outlet hole opening direction, and the free end of described reed also can be adjusted angle according to actual needs near the air outlet hole of lower shell body.
Described lower shell body is provided with the caulking groove of placing body around inwall, and body places under the caulking groove state, and lower shell body air inlet end face exceeds or maintains an equal level in body surface.By caulking groove the body set-up mode is oversimplified, more quick during assembling.
Described body positive and negative is provided with seal ring around perisporium, plays seal action.
Described body suction port end face is provided with one and can holds the acoustical panel that air passes through, in the time of can reducing work to the pollution of the noise of surrounding enviroment.
Described upper enclosure inner wall is close to inlet hole and is provided with a filter screen, and setting up of filter screen substituted air filter, realizes filtering voluntarily.
Described lower shell body air outlet hole both sides are provided with the screw that is applicable to installation, are convenient to be installed on all kinds of bodies.
Compared with prior art, advantage of the present utility model is: one-way valve is with respect to the petrol engine independent design, partial installation, the inlet hole of one-way valve and the opening direction of air outlet hole can require to be provided with according to reality, so the utility model versatility is very strong, can be arranged on various types of general small-size gasoline engines; Housing set up the quick mounting of being convenient to one-way valve, simultaneously body is had protective action, guarantee the permanent stable work of one-way valve; It is, simultaneously simple in structure, with low cost, respond well when the setting up of acoustical panel significantly reduced work to the pollution of the noise of surrounding enviroment; Setting up of filter screen substituted air filter, can filter voluntarily, and tonifying Qi is respond well, has reduced cost of production.
Description of drawings
Fig. 1 is embodiment's a perspective view.
Fig. 2 is another perspective view of embodiment.
Fig. 3 is embodiment's decomposition assembling figure.
Fig. 4 is embodiment's cross-sectional view.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment, with reference to figure 1 and Fig. 2, the single-one valve for tail gas purification of general small-size gasoline engine in the present embodiment comprises housing, reed 7, body 6, acoustical panel 5, filter screen 4 and plate washer 8, housing comprises upper shell 1 and lower shell body 2.
With reference to figure 3 and Fig. 4, upper shell 1 is connected screw 13 and following screw 23 with lower shell body 2 by two bolts 3, realization is connected and fixed, upper shell 1 is provided with a plurality of inlet holes 11, lower shell body 2 is provided with air outlet hole 21, lower shell body 2 is provided with caulking groove 24 around inwall, and lower shell body air outlet hole 21 both sides are provided with the screw 22 that is applicable to installation.Inlet hole 11 is vertical mutually with air outlet hole 21 opening directions, and upper shell 1 forms inner chamber with lower shell body 2.
Reed 7 has fixed end 73 and free end 72, reed 7 is covered on the suction port 61 of body near air outlet hole 21, the fixed end 73 of reed 7 is connected on the body 6, the free end 73 of reed 7 is near the air outlet hole 21 of lower shell body 2, the free end 72 of reed is when air inlet, leave suction port, open-shaped attitude.
Plate washer 8 is located at reed 7 back sides, and the fixed end 73 that an end of plate washer 8 is close to reed 7 is arranged on the body 6, and the other end opens along free end 72 directions of reed 7.
Acoustical panel 5 is located on the body 6 suction port end faces, which is provided with through hole 51, can hold air and pass through.
Working principle: during use, one-way valve is installed on the universal machine vent systems, utilize the engine exhaust pulse, when vent systems was in negative pressure, the reed inside pressure of one-way valve was less than outside pressure, and the free end of reed is opened by gas pressure, and be close to plate washer, air is the suction port of inlet hole, filter screen, acoustical panel and the body by upper shell successively, enters in the body, and the harmful gas in the tail gas is purified; When vent systems was in malleation, the free end of reed was subjected to gas pressure to compress the suction port that body is sealed body, thereby closes one-way valve, caused waste gas to go out to cause atmospheric pollution by the inlet hole adverse current.
The U.S. EPA general small-size gasoline engine of present embodiment is installed,, the effect that reduces the tail gas discharge of poisonous waste is significantly arranged by the second stage emission request is tested.Concrete test result sees Table 1 and table 2.
Table 1 154 two-cycle utility miniature gasoline engine emission test results (relative value).
| State | CO(％) | HC(pmm) | NOX(pmm) |
| Former machine | 7.81％ | 398 | 202 |
| Former machine+present embodiment | 5.6％ | 257 | 117 |
| Former machine+catalyzer | 8.27％ | 327 | 159 |
| Former machine+present embodiment+catalyzer | 4.81％ | 186 | 60 |
Table 2 168 four-stroke general small-size gasoline engine emission test results.
| State | CO | HC | NOX | Unit |
| Former machine | 480 | 10.09 | 1.75 | g/kw.h |
| Former machine+present embodiment | 280 | 7.35 | 1.33 | |
| Former machine+catalyzer | 310 | 7.54 | 2.69 | |
| Former machine+present embodiment+catalyzer | 250.2 | 4.02 | 1.11 |
Claims (7)
1. single-one valve for tail gas purification of general small-size gasoline engine, the housing that comprises have inlet hole (11) and air outlet hole (21), have the reed (7) of fixed end (73) and free end (72) and be located at the plate washer (8) at reed (7) back side, it is characterized in that described housing comprises upper shell (1) and lower shell body (2), described inlet hole (11) is located on the upper shell (1), described air outlet hole (21) is located on the lower shell body (2), upper shell (1) forms inner chamber with lower shell body (2), this inner chamber is provided with a body (6), the suction port (61) of this body (6) communicates with the inlet hole (11) of upper shell (1), described reed (7) is covered on the aforementioned suction port (61) near air outlet hole (21), the fixed end (73) of reed (7) is connected on the aforementioned body (6), the fixed end (73) that one end of described plate washer (8) is close to reed (7) is arranged on the aforesaid body (6), and the other end opens along free end (72) direction of reed (7).
2. single-one valve for tail gas purification of general small-size gasoline engine according to claim 1, it is characterized in that described inlet hole (11) is vertical mutually with described air outlet hole (21) opening direction, and the free end (73) of described reed (7) is near the air outlet hole (21) of lower shell body (2).
3. single-one valve for tail gas purification of general small-size gasoline engine according to claim 1, it is characterized in that described lower shell body (2) is provided with the caulking groove (24) of placing body (6) around inwall, body (6) places under caulking groove (24) state, and lower shell body (2) air inlet end face exceeds or maintains an equal level in body (6) surface.
4. single-one valve for tail gas purification of general small-size gasoline engine according to claim 3 is characterized in that described body (6) positive and negative is provided with seal ring (63) around perisporium.
5. according to the described single-one valve for tail gas purification of general small-size gasoline engine of the arbitrary claim of claim 1 to 4, it is characterized in that described body (6) suction port end face is provided with one and can holds the acoustical panel (5) that air passes through.
6. single-one valve for tail gas purification of general small-size gasoline engine according to claim 1 is characterized in that described upper shell (1) inwall is close to inlet hole (11) and is provided with a filter screen (4).
7. single-one valve for tail gas purification of general small-size gasoline engine according to claim 1 is characterized in that described lower shell body air outlet hole (21) both sides are provided with the screw (22) that is applicable to installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201094995U CN201034032Y (en) | 2007-05-18 | 2007-05-18 | One-way valve for exhaust gas purification of universal small-sized petrol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201094995U CN201034032Y (en) | 2007-05-18 | 2007-05-18 | One-way valve for exhaust gas purification of universal small-sized petrol engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201034032Y true CN201034032Y (en) | 2008-03-12 |
Family
ID=39194923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201094995U Expired - Fee Related CN201034032Y (en) | 2007-05-18 | 2007-05-18 | One-way valve for exhaust gas purification of universal small-sized petrol engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201034032Y (en) |
-
2007
- 2007-05-18 CN CNU2007201094995U patent/CN201034032Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201034032Y (en) | One-way valve for exhaust gas purification of universal small-sized petrol engine | |
| CN101054917A (en) | Single-one valve for tail gas purification of general small-size gasoline engine | |
| CN2890361Y (en) | Motorcycle oil-gas separator with comb-like filter element | |
| CN2474732Y (en) | Silencer | |
| CN201273236Y (en) | Vehicle air-intake installation | |
| CN201255046Y (en) | Cylinder head WITH secondary air-intake structure | |
| CN201802510U (en) | Fuel evaporative emission system for internal combustion engine with mechanical supercharger | |
| CN2883708Y (en) | Engine combustion supporting booster | |
| CN2334892Y (en) | Combustion aid for engine | |
| CN202628232U (en) | Ventilating system and discharge valve for engine crank case | |
| CN2849177Y (en) | Universal small size gasoline engine tail gas purification device | |
| CN2440951Y (en) | High performance fuel saving purifier | |
| CN215057663U (en) | Diesel engine capable of reducing particulate pollutant emission | |
| CN2620095Y (en) | Secondary air leading-in device for motorcycle engine | |
| CN211474306U (en) | Air inlet system of loader | |
| CN216381576U (en) | Novel tail gas purification system for fuel oil train | |
| CN2602170Y (en) | Sound-deadening clarifier | |
| CN2315303Y (en) | Tail gas purifier for diesel engine | |
| CN2784592Y (en) | Mounting structure for secondary air intake guide device of motorcycle | |
| CN2525255Y (en) | Recovering and purifying device for motorcyle waste gas | |
| CN2222240Y (en) | Air compensation device for central seavenging way | |
| CN2603212Y (en) | Improved exhaust pipe for engine | |
| CN2382844Y (en) | Purifier for automobile tail gas | |
| CN2288273Y (en) | Purifier for automobile tail gas | |
| CN2702058Y (en) | Sound-deadening purifier for motor vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080312 Termination date: 20160518 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |