CN204020551U - Loader fuel tank device for preventing leakage - Google Patents

Loader fuel tank device for preventing leakage Download PDF

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Publication number
CN204020551U
CN204020551U CN201420463152.0U CN201420463152U CN204020551U CN 204020551 U CN204020551 U CN 204020551U CN 201420463152 U CN201420463152 U CN 201420463152U CN 204020551 U CN204020551 U CN 204020551U
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CN
China
Prior art keywords
filler pipe
fuel filler
casing
oil
floating
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Active
Application number
CN201420463152.0U
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Chinese (zh)
Inventor
郭文明
杜晓琳
徐尚勇
汤志林
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Technology Branch of XCMG Engineering Machinery Co Ltd
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Technology Branch of XCMG Engineering Machinery Co Ltd
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Priority to CN201420463152.0U priority Critical patent/CN204020551U/en
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Publication of CN204020551U publication Critical patent/CN204020551U/en
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Abstract

The utility model discloses a kind of loader fuel tank device for preventing leakage, comprise casing, the upper end of casing is provided with fuel filler pipe, and fuel filler pipe inserts in casing, it also comprises a unidirectional keying valve, unidirectional keying valve is made up of stifled the floating of float lever, oiling cover plate and oil, and the upper end of float lever connects oiling cover plate, and its lower end connection oil blocks up floating; The cover plate that refuels is arranged in fuel filler pipe, and the external diameter of oiling cover plate and fuel filler pipe internal diameter etc. are large; Oil is stifled floats the fuel filler pipe outside being arranged on and being positioned at casing, and the stifled floating external diameter of oil is greater than the internal diameter of fuel filler pipe.Arrange unidirectional keying valve, when loader descent run, fuel tank leans forward, and liquid level rises, and oil blocks up floating with liquid level rising, until stifled the floating of oil rises to fuel filler pipe bottom, compresses fuel filler pipe oil outlet, effectively prevent the leakage of fuel oil; Fuel filler pipe detouchable is arranged on casing simultaneously, is convenient to dismantle fuel filler pipe, convenient for maintaining fuel filler pipe inner body between guarantee casing and fuel filler pipe while leak tightness.

Description

Loader fuel tank device for preventing leakage
Technical field
The utility model relates to a kind of loader fuel tank device for preventing leakage.
Background technology
When driving, fuel tank, constantly to engine oil, causes fuel tank internal pressure too low to loader, and fuel tank need suck large quantity of air from oil filling port and ambient atmosphere keeps balancing.For ensureing the timely supply of large quantity of air, at present, domestic loader only installs airfilter at fuel tank filler, plays permeation functions.But loader is in the process of descent run, and fuel tank leans forward, fuel oil accumulation fuel tank is anterior, and liquid level raises, and fuel oil easily leaks from oil filling port.
Utility model content
In order to overcome above-mentioned defect, the utility model provides a kind of can ensure that the timely supply of air effectively can prevent again the loader fuel tank device for preventing leakage of fuel leakage in loader descent run.
The utility model in order to the technical scheme solving its technical matters and adopt is: a kind of loader fuel tank device for preventing leakage, comprise casing, the upper end of casing is provided with fuel filler pipe, and fuel filler pipe inserts in casing, it also comprises a unidirectional keying valve, described unidirectional keying valve is made up of stifled the floating of float lever, oiling cover plate and oil, and the upper end of described float lever connects oiling cover plate, and its lower end connection oil blocks up floating; Described oiling cover plate is arranged in fuel filler pipe, and the external diameter of oiling cover plate and fuel filler pipe internal diameter etc. are large; Described oil blocks up the fuel filler pipe outside of floating and being arranged on and being positioned at casing, and the stifled floating external diameter of oil is greater than the internal diameter of fuel filler pipe.
As preferably, described fuel filler pipe detouchable is installed on casing, and this connection mode is convenient to dismantle fuel filler pipe while leak tightness between guarantee casing and fuel filler pipe, convenient for maintaining fuel filler pipe inner body.
As preferably, described fuel filler pipe is welded with flange, and is arranged on casing by bolt, and the position that described flange contacts with casing is provided with rubber cushion.
As preferably, described oiling cover plate is a metal ring, is provided with some grids in described metal ring; Stifled the floating of oil is a hollow plastic body, and oily blocking up floats on the liquid level of box house, rises and rise along with liquid level, and when liquid level rises to the oil outlet of fuel filler pipe, the oil outlet of fuel filler pipe is now just blocked by stifled the floating of oil, has blocked fuel oil and has flowed out from oil filling port.
The beneficial effects of the utility model are: arrange unidirectional keying valve, when loader descent run, fuel tank leans forward, fuel oil accumulation is anterior at fuel tank, liquid level rises, and oil blocks up floating rising with liquid level, until stifled the floating of oil rises to fuel filler pipe bottom, compress fuel filler pipe oil outlet, effectively prevent the leakage of fuel oil; Fuel filler pipe detouchable is arranged on casing simultaneously, is convenient to dismantle fuel filler pipe, convenient for maintaining fuel filler pipe inner body between guarantee casing and fuel filler pipe while leak tightness.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Anti-leak fuel tank structure figure when Fig. 2 is descending;
Fig. 3 is the constructional drawing of oiling cover plate;
Wherein: 1, casing, 2, fuel filler pipe, 3, float lever, 4, refuel cover plate, 5, oil is stifled floating, 6, flange, 7, rubber cushion.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Figure 1 to Figure 3, a kind of loader fuel tank device for preventing leakage, comprise casing 1, the upper end of casing 1 is provided with fuel filler pipe 2, and fuel filler pipe 2 inserts in casing 1, it also comprises a unidirectional keying valve, and described unidirectional keying valve is made up of with oil stifled floating 5 float lever 3, the cover plate 4 that refuels, the upper end of described float lever 3 connects oiling cover plate 4, and its lower end connects oil stifled floating 5; Described oiling cover plate 4 is arranged in fuel filler pipe 2, and the external diameter of oiling cover plate 4 and fuel filler pipe 2 internal diameter etc. are large; Described oil blocks up floating 5 and is arranged on fuel filler pipe 2 outside being positioned at casing 1, and the stifled external diameter of floating 5 of oil is greater than the internal diameter of fuel filler pipe 2.
Fuel filler pipe 2 detouchable is installed on casing 1, and this connection mode is convenient to dismantle fuel filler pipe 2 while leak tightness between guarantee casing 1 and fuel filler pipe 2, convenient for maintaining fuel filler pipe 2 inner body; Described fuel filler pipe 2 is welded with flange 6, and is arranged on casing 1 by bolt, and the position that described flange 6 contacts with casing 1 is provided with rubber cushion 7.
Described oiling cover plate 4 is a metal ring, and is provided with several grid in metal ring, and it plays fixed pedestal effect; Stifled floating 5 is a hollow plastic body.
During oiling, oil gun is inserted fuel filler pipe 2 by operator, and fuel oil injects fuel tank through oiling cover plate 4, and in casing 1, large quantity of air is discharged by fuel filler pipe 2, and oil stifled floating 5 is suspended on the liquid level bottom fuel filler pipe 2 inoperative, until fuel tank is filled it up with smoothly;
When loader level travels, oil is stifled floating 5 also inoperative, and air is inhaled into by fuel filler pipe, ensures that casing internal gas pressure and barometric pressure balance;
Loader is when descent run, fuel tank leans forward, fuel oil accumulation is anterior at casing 1, liquid level rises, and oil stifled floating 5 rises with liquid level along float lever 3, until oil stifled floating 5 rises to fuel filler pipe 2 bottom, compress fuel filler pipe 2 oil outlet, now float lever 3, the cover plate 4 of refueling constitutes one with float 5 in fuel tank that fuel oil can only be made to flow along oil inlet, prevent the unidirectional keying valve of oil stream counter-flow, effectively prevent the leakage of fuel oil.

Claims (4)

1. a loader fuel tank device for preventing leakage, comprise casing (1), the upper end of casing (1) is provided with fuel filler pipe (2), and fuel filler pipe (2) inserts in casing (1), it is characterized in that: also comprise a unidirectional keying valve, described unidirectional keying valve is made up of with oil stifled floating (5) float lever (3), the cover plate (4) that refuels, the upper end of described float lever (3) connects oiling cover plate (4), and its lower end connects oil stifled floating (5); Described oiling cover plate (4) is arranged in fuel filler pipe (2), and the external diameter of oiling cover plate (4) and fuel filler pipe (2) internal diameter etc. are large; It is outside that described oil stifled floating (5) is arranged on the fuel filler pipe (2) being positioned at casing (1), and the external diameter of oil stifled floating (5) is greater than the internal diameter of fuel filler pipe (2).
2. loader fuel tank device for preventing leakage according to claim 1, is characterized in that: described fuel filler pipe (2) detouchable is installed on casing (1).
3. loader fuel tank device for preventing leakage according to claim 2, it is characterized in that: described fuel filler pipe (2) is welded with flange (6), and being arranged on casing (1) by bolt, the position that described flange (6) contacts with casing (1) is provided with rubber cushion (7).
4. the loader fuel tank device for preventing leakage according to any one of claims 1 to 3, is characterized in that: described oiling cover plate (4) is a metal ring, is provided with some grids in described metal ring; Oil stifled floating (5) is a hollow plastic body.
CN201420463152.0U 2014-08-15 2014-08-15 Loader fuel tank device for preventing leakage Active CN204020551U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420463152.0U CN204020551U (en) 2014-08-15 2014-08-15 Loader fuel tank device for preventing leakage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420463152.0U CN204020551U (en) 2014-08-15 2014-08-15 Loader fuel tank device for preventing leakage

Publications (1)

Publication Number Publication Date
CN204020551U true CN204020551U (en) 2014-12-17

Family

ID=52060455

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420463152.0U Active CN204020551U (en) 2014-08-15 2014-08-15 Loader fuel tank device for preventing leakage

Country Status (1)

Country Link
CN (1) CN204020551U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105599594A (en) * 2016-01-29 2016-05-25 黄社兰 Oil filling pipe for oil tank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105599594A (en) * 2016-01-29 2016-05-25 黄社兰 Oil filling pipe for oil tank

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