CN2837282Y

CN2837282Y - Compressor gun

Info

Publication number: CN2837282Y
Application number: CN 200520144053
Authority: CN
Inventors: 张志英; 王星斌
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2005-08-08
Filing date: 2005-12-02
Publication date: 2006-11-15
Anticipated expiration: 2015-12-02

Abstract

The utility model discloses a compressor gun which comprises a gun body, a self-sealing mechanism, a driving handle, an oil gun nozzle and a sealing mechanism. The self-sealing mechanism is arranged in the gun body; the driving handle is connected with the self-sealing mechanism, wherein the sealing mechanism is arranged in a sealing ring of the oil gun nozzle in a sheathed and adhesive form; the sealing ring at least comprises an annular groove which extends towards the direction of a circle center along the external wall of the utility model and comprises two layers of parallel sealing sheets which are formed by the groove, and an oil return mechanism is arranged on a first layer of sealing sheets close to the end portion of the oil gun nozzle. The utility model forms two layers of sealing sheets by arranging an annular groove on the external wall of the sealing ring, and sealing effects can be increased. The utility model can prevent fuel oil from dripping by making use of the arrangement of the oil return mechanism, and the utility model is favorable for safety and environmental protection.

Description

A kind of nozzle

[technical field]

The utility model relates to nozzle, especially about a kind of excessive nozzle of fuel oil of avoiding.

[background technology]

In the process of group refueling, the gun adapter of nozzle will put in certain depth from the group refueling mouth, in order to discharge air in the case, an air extractor duct need be arranged at the oil filling port place, and this air extractor duct is communicated with fuel tank by special pipeline, and fuel oil is added smoothly; Fuel oil takes place sometimes from refueling the excessive phenomenon of muzzle, this is the flow velocity height because of gasoline, and flow is big: the gas in the fuel tank has little time to discharge on the one hand, causes excessive easily, fuel oil and filling conduit inwall wash away and cause outer spattering on the other hand, are unfavorable for environmental protection and safety.

The existing excessive method of fuel oil of avoiding is to adopt in nozzle gun adapter position sealing mechanism to be set, its principle is sealing member to be fixed and then realized pinch-off seal by bolt by spring, upper and lower gland, though this structure can be avoided a large amount of fuel oil outer-flowing phenomenons, but its complex structure, operation inconvenience, be difficult for industrialization, cost height, can not realize multi-sealed simultaneously.

[utility model content]

The utility model provide a kind of be simple and easy to, with low cost and can realize the safe environment protection type nozzle of double seal.

The purpose of this utility model is achieved in that the utility model comprises rifle body, driver train, gun adapter and sealing mechanism, driver train is arranged on the rifle body, sealing mechanism is installed on the gun adapter, wherein said sealing mechanism is to place seal ring on the gun adapter with fixing mode, described seal ring comprises an annular recess that extends to center of circle direction along its outer wall and the formed two-layer seal strip arranged side by side of groove thus at least, and the ground floor seal strip of described close gun adapter end is provided with oil return mechanism.

Described oil return mechanism is the oil return through-hole that is connected with groove that is provided with at interval along ground floor seal strip outer face circumferencial direction, and cooresponding oil return through-hole entrance is respectively equipped with and utilizes pressure to carry out the shell fragment of shutoff accordingly.

The groove mouth of the described oil return through-hole that links to each other with groove is pressed close to the seal ring outer wall.

Described oil return mechanism is the projection of stretching out at interval to center of circle direction along the annular recess madial wall from ground floor seal strip outer wall.

Described second layer seal strip is provided with and the corresponding one group of projection of described projection position.

Described annular recess is one.

The utlity model has following advantage:, can reach the purpose that is simple and easy to usefulness, convenient disassembly 1) by sheathed adhering and sealing circle in the gun adapter end; 2) by on the seal ring outer wall, annular recess being set, form two-layer seal strip, can improve sealing effectiveness; 3) by the setting of oil return mechanism, the waste of fuel oil be can prevent, safety and environmental protection are of value to.

The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.

[description of drawings]

Fig. 1 is the running condition scheme drawing of nozzle among the utility model embodiment one.

Fig. 2 is the enlarged diagram at A shown in Figure 1 place.

Fig. 3 is the section structure scheme drawing that the oil return through-hole groove mouth of the utility model sealing mechanism is pressed close to the seal ring outer wall.

Fig. 4 is a nozzle running condition scheme drawing among the utility model embodiment two.

Fig. 5 is the enlarged diagram at B shown in Figure 4 place.

Fig. 6 is the enlarged section scheme drawing that is interval with projection on the ground floor seal strip outer face shown in Figure 5.

The structural representation that Fig. 7 causes the projection on the seal strip to be moved to the fuel tank direction for seal ring and filler tank pipe friction in the process of pulling out nozzle among the utility model embodiment two.

[specific embodiment]

Embodiment one, see also Fig. 1, shown in 2, the utility model comprises rifle body 1, driver train 2, gun adapter 3, freeing pipe 11 and sealing mechanism, driver train 2 is arranged on the rifle body 1, sealing mechanism is installed on the gun adapter 3, wherein said seal ring 4 sheathed being bonded in away from nozzle gun adapter 3 ports one segment distance, so that can not cover the opening of nozzle auto-stop mechanism breather pipe 21, the opening of guaranteeing breather pipe 21 can make the driver train 2 of rifle move when being blocked by excessive fuel oil, cut off the nozzle pipeline, stop to refuel, described seal ring 4 comprises an annular recess 5 that extends to center of circle direction along its outer wall and groove 5 formed two-layer seal strips arranged side by side 41 thus at least, 42, described ground floor seal strip 41 near gun adapter 3 ends is provided with oil return mechanism;

Described oil return mechanism is the oil return through-hole 6 that is connected with groove 5 that is provided with at interval along ground floor seal strip 41 outer face circumferencial directions, cooresponding oil return through-hole 6 inlets 61 places are provided with the shell fragment 7 that utilizes pressure to carry out shutoff accordingly respectively, ground floor seal strip 41, second layer seal strip 42, filler tank pipe and the annular recess 5 common ring cavities 12 that form when refueling.

Working process:

As Fig. 1, shown in 2, (seal ring is so long as resilient soft grease proofing corrosion-resistant material can for a sheathed seal ring on the gun adapter 3 of common self-styled gasoline nozzle, as rubber ring), this rifle head is stretched into the oil filling port of group refueling case 10, pull the handle on the driver train 2 this moment, open driver train 2 valve that oils, fuel oil begins to flow out under the high pressure effect in the fuel charger, when fuel oil has excessive tendency, shutoff shell fragment 7 can be blocked oil return through-hole 6 inlets 61 on the ground floor seal strip 41 under the excessive pressure effect of fuel oil, thereby formation sealing surface, and then impel fuel oil to flow into fuel tank 10, when driver train 2 air extractor vents 21 of oil gun 1 oil outlet are blocked by oil or fuel oil when filling it up with, valve event in the driver train 2, make the handle action, thereby close fuel-displaced valve, stop control lever, when fuel feeding stops, the fuel flow pressure that acts on the shell fragment 7 is removed, shell fragment 7 will resilience, cause shutoff shell fragment 7 to leave oil return through-hole 6, thereby open the oil return through-hole 6 on the seal ring 41 of ground floor, make a small amount of fuel oil that may appear at ring cavity 12 flow into fuel tank to fuel tank 10 directions motions.

In order to improve the leak free reliability, seal ring 4 also can be provided with a plurality of annular recess at the seal ring outside face in the utility model, forms multi-layer sealed, improves sealing effectiveness.

Further, as shown in Figure 3, the described oil return through-hole that is communicated with groove 56 groove mouths 62 are pressed close to the seal ring outer wall, and the fuel oil that the oil return through-hole of this structure more helps being stored in ring cavity 12 flow in the fuel tank.

Embodiment two, extremely shown in Figure 7 as Fig. 4, on the described seal ring 4 oil return mechanism be from first, the layer seal strip 41

outer walls projection

8,8 ', 8 of stretching out at interval to center of circle direction along annular recess 5 madial walls ", 8 , described second layer seal strip 42 is provided with and described

projection

8,8 ', 8 ", the corresponding one group of projection 9 in 8  positions.

Working process:

Moulding is had projection 8,8 '; 8 " seal ring 4 sheathed being bonded on common nozzle 1 gun adapter 3 of 8 , one annular recess 5 is set on the described seal ring 4, this rifle head is stretched into the oil filling port of group refueling case 10, pull the handle on the driver train 2 this moment, open driver train 2 fuel tap doors, fuel oil begins to flow out under the high pressure effect in the fuel charger, when fuel oil has excessive tendency, the two-layer seal strip 41 of

rubber seal

4,42 have prevented the excessive of fuel oil, when driver train 2 air extractor vents of oil gun 1 oil outlet are blocked by oil or fuel oil when filling it up with, valve event in the driver train 2, make the handle action, thereby close fuel-displaced valve, stop control lever, because of adding the excessive or other reasons of oil pressure, sometimes may be at two-layer seal strip 41, assemble in the ring cavity 12 between 42 a spot of fuel oil is arranged, when getting nozzle, because the effect of friction force makes projection 8 outside faces contact fuel filler pipe inwall and friction texturizing, projection 8 is not set this moment, 8 '; 8 " the outer wall of the ground floor seal strip 41 of the close filler tank tube wall of 8  has broken away from the inwall of fuel filler pipe, form the gap, at this moment, the a small amount of fuel oil by gravity that accumulates in the ring cavity 12 can flow in the fuel tank, on described second layer seal strip 42, be provided with and described projection 8,8 '; 8 " the corresponding one group of projection 9 in 8  positions mainly is for the fuel oil that accumulates in outside second seal ring 42 is flow in the fuel tank.

Claims

1. nozzle, comprise rifle body (1), driver train (2), gun adapter (3) and sealing mechanism, driver train (2) is arranged on the rifle body (1), sealing mechanism is installed on the gun adapter (3), it is characterized in that: described sealing mechanism is to place seal ring (4) on the gun adapter (3) in sheathed mode, described seal ring (4) comprises an annular recess (5) that extends to center of circle direction along its outer wall and the formed two-layer seal strip arranged side by side (41 of groove thus at least, 42), described ground floor seal strip (41) near gun adapter (3) end is provided with oil return mechanism.

2. a kind of nozzle as claimed in claim 1, it is characterized in that: described oil return mechanism is the oil return through-hole (6) that is connected with groove (5) that is provided with at interval along ground floor seal strip (4) outer face circumferencial direction, and cooresponding oil return through-hole (6) inlet (61) locates to be provided with respectively the shell fragment (7) that utilizes pressure to carry out shutoff accordingly.

3. a kind of nozzle as claimed in claim 2 is characterized in that: the groove mouth (62) of the described oil return through-hole (6) that links to each other with groove (5) is pressed close to the seal ring outer wall.

4. a kind of nozzle as claimed in claim 1 is characterized in that: described oil return mechanism is the projection (8) of stretching out at interval to center of circle direction along annular recess (5) madial wall from ground floor seal strip (41) outer wall.

5. a kind of nozzle as claimed in claim 4 is characterized in that: described second layer seal strip (42) is provided with and described projection (8) the corresponding one group of projection in position (9).

6. as any described a kind of nozzle of claim 1 to 4, it is characterized in that: described annular recess (5) is one.