CN201531334U

CN201531334U - Petrol engine fuel oil way device

Info

Publication number: CN201531334U
Application number: CN2009202067547U
Authority: CN
Inventors: 朱益民
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-10-22
Filing date: 2009-10-22
Publication date: 2010-07-21
Anticipated expiration: 2019-10-22

Abstract

The utility model relates to a petrol engine fuel oil way device, which comprises a fuel tank (1) with a closed fuel tank cover, a carburetor (3) which is connected with the fuel tank (1) through an oil pipe (2), and a fuel conversion switch (4) which is arranged on the oil pipe (2), and is characterized in that an automatic oil return device is further arranged between the carburetor (3) and the fuel tank (1). The petrol engine fuel oil way device not only can lead petrol left in the carburetor to automatically return the fuel tank, but also can prevent volatile petrol in the fuel tank and the carburetor from polluting environment.

Description

A kind of gasoline engine fuel oil circuit device

Technical field

The utility model relates to a kind of petrol engine, is specifically related to a kind of fuel path device of petrol engine.

Background technique

The Carburetor that general gasoline engines fuel path device in the market comprises the fuel tank that has vent, be communicated with fuel tank by oil pipe, be arranged at the fuel oil throw over switch on this oil pipe and be arranged on the oil discharge screw of Carburetor bottom.Generally; petrol engine is after operation is shut down; can retain in the Carburetor gasoline is arranged; if do not start petrol engine for a long time; this gasoline will volatilize; because gasoline can produce colloidal material in the process of volatilization; this colloidal material is easily attached on the Carburetor internal components surface; thereby can cause petrol engine when start next time very the difficulty in addition can't start; after therefore if the petrol engine operation is shut down; need manually oil discharge screw to be turned on to emit the gasoline in the Carburetor, the gasoline that this is emitted is refunded to fuel tank again, therefore uses extremely inconvenient.And the gasoline of fuel tank and Carburetor can pollute environment in volatilization process.

The model utility content

The purpose of this utility model provides a kind of gasoline engine fuel oil circuit device, and this fuel path device not only can make the gasoline of retaining in the Carburetor can automatically return in the fuel tank, can also prevent the gasoline contamination environment that volatilizees in fuel tank and the Carburetor.

The purpose of this utility model is achieved through the following technical solutions: a kind of gasoline engine fuel oil circuit device, comprise that fuel tank cap is the fuel tank of sealing, the Carburetor that is communicated with fuel tank by transport pipe, be arranged at the fuel oil throw over switch on the transport pipe, have additional between described Carburetor and the fuel tank and return oily device automatically.

Describedly return oily device automatically and comprise the oil conservator that has through hole; One end of this oil conservator is communicated with described Carburetor by drain line, and the other end is communicated with described fuel tank by return tube.

One side of described oil conservator is provided with the activated carbon container that is communicated with it; Described activated carbon container is provided with vent, thereby oil conservator and atmosphere weighing apparatus is pressed, and can also petrol molecule be intercepted in oil conservator by active carbon; One side of described Carburetor is provided with the empty filter that is communicated with it, this sky filter is communicated with described oil conservator by breathing pipe, thereby the petrol molecule that volatilizees in Carburetor and the fuel tank is attracted in the activated carbon container by empty filter and oil conservator, prevents from environment is polluted.

Be provided with switch in the described oil conservator; This switch is arranged at the bottom of described oil conservator, and the activity of one end is inserted in the described drain line, thereby when the gasoline in the described oil conservator reached rated capacity, the switch that is arranged in the oil conservator will rise and drain line be blocked.

Described transport pipe and described drain line are cross and are connected and communicate; Described fuel oil throw over switch is arranged on this joint; thereby this fuel oil throw over switch both can be controlled described transport pipe; can control described drain line again; promptly adopt a switch can realize that just the petrol engine operation flows into oil conservator by drain line, simplified structure with oil and the trapped fuel of shutting down in the Carburetor of back.

One end of described return tube is connected the bottom of described oil conservator, and therefore whole gasoline of described oil conservator all can turn back in the described fuel tank; Its other end is connected the top of described fuel tank, and therefore the gasoline in the described fuel tank can not be back in the described oil conservator.

The beneficial effects of the utility model are as follows:

(1) the utility model returns oily device automatically owing to having additional between fuel tank and Carburetor, and this returns oily device automatically and comprises oil conservator; One end of this oil conservator is communicated with Carburetor by drain line, and the other end is communicated with fuel tank by return tube; One side of this oil conservator is provided with the activated carbon container that has vent, the heat that petrol engine is produced when operation can make the temperature in the fuel tank raise, air in the fuel tank will expand, and the interior hot air of fuel tank this moment is discharged from the vent of activated carbon container by return tube, oil conservator; After the petrol engine operation is shut down; temperature in the fuel tank can slowly descend; air pressure in the process intermediate fuel oil case that temperature descends can reduce; thereby the gasoline in the oil conservator is back in the fuel tank automatically by return tube under the effect of atmospheric pressure, has realized that the gasoline of retaining in the Carburetor of petrol engine shutdown back automatically returns to fuel tank.

(2) the utility model is provided with the activated carbon container that is communicated with it in a side of oil conservator, and this activated carbon container is provided with vent, therefore not only can make in the oil conservator and the atmosphere pressure that can weigh, can also oil molecule be intercepted in oil conservator by active carbon, prevent that its volatilization from polluting atmosphere, adapted to environmental protection requirement.

(3) the utility model is provided with switch in oil conservator, and when the gasoline in the oil conservator reached rated capacity, this switch rises under the floating function of gasoline and drain line is blocked, and was with the closure or openness of automatic control drain line, very convenient.

(4) transport pipe and drain line are cross and are connected and communicate in the utility model; and this fuel oil throw over switch is arranged on this joint; thereby only utilize a fuel oil throw over switch can realize that the petrol engine operation flows into oil conservator with oil and the trapped fuel of shutting down in the Carburetor of back by drain line, very convenient.

(5) end of return tube is connected the bottom of oil conservator in the utility model, so whole gasoline of oil conservator all can turn back in the fuel tank; Its other end is connected the top of fuel tank, so the gasoline in the fuel tank can not be back in the oil conservator.

Description of drawings

Fig. 1 is the structural representation of gasoline engine fuel oil circuit device among the utility model embodiment 1.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but therefore model utility is not limited among the following concrete mode.

Embodiment 1: as shown in Figure 1, a kind of gasoline engine fuel oil circuit device, comprise that fuel tank cap is the fuel tank 1 of sealing, the Carburetor 3 that is communicated with fuel tank 1 by transport pipe 2, be arranged at the fuel oil throw over switch 4 on the transport pipe 2, have additional between described Carburetor 3 and the fuel tank 1 and return oily device automatically; Describedly return oily device automatically and comprise the oil conservator 5 that has through hole; One end of this oil conservator 5 is communicated with described Carburetor 3 by drain line 7, and the other end is communicated with described fuel tank 1 by return tube 8; One side of described oil conservator 5 is provided with the activated carbon container 6 that is communicated with it; Described activated carbon container 6 is provided with vent 11; One side of Carburetor 3 is provided with the empty filter 9 that is communicated with it, and this sky filter 9 is communicated with described oil conservator 5 by breathing pipe 10; Be provided with switch 12 in the described oil conservator 5; This switch 12 is arranged at the bottom of described oil conservator 5, and the activity of one end is inserted in the described drain line 7; Described transport pipe 2 and described drain line 7 are cross and are connected and communicate; Described fuel oil throw over switch 4 is arranged on this joint; One end of described return tube 8 is connected the bottom of described oil conservator 5, and the other end is connected the top of described fuel tank 1.

Rotation fuel oil throw over switch 4 is to open transport pipe 2, this moment, drain line 7 was closed, gasoline in the fuel tank 1 enters Carburetor 3 by transport pipe 2, the gasoline engine starting operation, the heat that is produced raises and expansion the air temperature in the fuel tank 1 thus, this moment, this hot air was discharged from vent 11 by transport pipe 2, Carburetor 3, empty filter 9, breathing pipe 10, oil conservator 5 and activated carbon container 6 successively, and the petrol molecule of carrying secretly in this hot air is blocked in the oil conservator 5 by activated carbon container 6, to prevent that it from evaporating in the air environment is polluted.

Rotation fuel oil throw over switch 4 is to open drain line 7, this moment, transport pipe 2 was closed, the gasoline of retaining in the Carburetor 3 flows in the oil conservator 5 under the action of gravity of himself, thereby emit the gasoline of retaining in the Carburetor 3, prevent that its volatilization from producing colloidal material, is attached to the internal components surface of Carburetor 3 to avoid this colloidal material; When the gasoline in the oil conservator 5 reached rated capacity, switch 12 rose under the floating function of gasoline and drain line 7 is blocked, to realize controlling the unlatching of drain line 7 automatically with closed; After petrol engine is shut down, air in the fuel tank 1 also reduces along with temperature reduces pressure gradually, produce pressure difference this moment between fuel tank 1 and oil conservator 5 (oil conservator 5 communicates with atmosphere by the vent 11 of activated carbon container 6, so pressure wherein is atmospheric pressure), this moment, the pressure in the oil conservator 5 was greater than the pressure of air in the fuel tank 1, thereby the gasoline in the oil conservator 5 returns in the fuel tank 1 automatically by return tube 8 under its pressure effect; The gasoline of volatilization enters into sky filter 9 along breathing pipe 10 in the oil conservator 5 simultaneously; When petrol engine starts when operation once more, the petrol molecules that are adsorbed in the activated carbon container 6 enter sky filter 9 along breathing pipe 10, enter burnedly in the Carburetor 3 to fall again.

Claims

1. gasoline engine fuel oil circuit device, comprise that fuel tank cap is the fuel tank (1) of sealing, the Carburetor (3) that is communicated with fuel tank (1) by transport pipe (2), be arranged at the fuel oil throw over switch (4) on the transport pipe (2), it is characterized in that: have additional between described Carburetor (3) and the fuel tank (1) and return oily device automatically.

2. gasoline engine fuel oil circuit device as claimed in claim 1 is characterized in that: describedly return oily device automatically and comprise the oil conservator (5) that has through hole; One end of this oil conservator (5) is communicated with described Carburetor (3) by drain line (7), and the other end is communicated with described fuel tank (1) by return tube (8).

3. gasoline engine fuel oil circuit device as claimed in claim 2 is characterized in that: a side of described oil conservator (5) is provided with the activated carbon container (6) that is communicated with it; Described activated carbon container (6) is provided with vent (11); One side of described Carburetor is provided with the empty filter (9) that is communicated with it, and this sky filter (9) is communicated with described oil conservator (5) by breathing pipe (10).

4. as claim 2 or 3 described gasoline engine fuel oil circuit devices, it is characterized in that: be provided with switch (12) in the described oil conservator (5); This switch is arranged at the bottom of described oil conservator (5), and the activity of one end is inserted in the described drain line (7).

5. gasoline engine fuel oil circuit device as claimed in claim 4 is characterized in that: described transport pipe (2) and described drain line (7) are cross and are connected and communicate; Described fuel oil throw over switch (4) is arranged on this joint.

6. as claim 2 or 3 described gasoline engine fuel oil circuit devices, it is characterized in that: an end of described return tube (8) is connected the bottom of described oil conservator (5), and the other end is connected the top of described fuel tank (1).