KR101088751B1 - fuel tank ventilation apparatus preventing fuel leakage for construction machine - Google Patents

fuel tank ventilation apparatus preventing fuel leakage for construction machine Download PDF

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Publication number
KR101088751B1
KR101088751B1 KR1020040070375A KR20040070375A KR101088751B1 KR 101088751 B1 KR101088751 B1 KR 101088751B1 KR 1020040070375 A KR1020040070375 A KR 1020040070375A KR 20040070375 A KR20040070375 A KR 20040070375A KR 101088751 B1 KR101088751 B1 KR 101088751B1
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South Korea
Prior art keywords
fuel
ventilation
fuel tank
construction machine
ventilation pipe
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KR1020040070375A
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Korean (ko)
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KR20060021582A (en
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임재찬
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볼보 컨스트럭션 이큅먼트 에이비
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Priority to KR1020040070375A priority Critical patent/KR101088751B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0883—Tanks, e.g. oil tank, urea tank, fuel tank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03519—Valve arrangements in the vent line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

본 발명은 연료누출 방지기능을 구비한 건설기계의 연료탱크 환기장치에 관한 것으로서, 연료탱크에 설치되며 환기공이 구비된 환기관과, 연료 표면에 부유되도록 형성되어 상하로 유동가능하게 환기관 내부에 내포된 부유구, 및 부유구가 연료탱크 내부로 낙하되지 않도록 지지하는 지지판으로 구성됨에 의해, 건설기계의 심한 경사면에서의 작업이나 강력한 충격에 의한 순간적인 요동 또는 사고로 인한 전복 시 연료탱크 내의 연료 표면이 기울어져 환기관 상단까지 상승한 경우 부유구가 부력에 의해 환기공을 폐쇄시켜 연료가 외부로 누출되는 것을 방지한다.
The present invention relates to a fuel tank ventilation device for a construction machine having a fuel leakage prevention function, and installed in a fuel tank and provided with a ventilation hole, and is formed to float on a fuel surface so as to be floated up and down and contained inside the ventilation pipe. It consists of a float, and a support plate to prevent the float from falling into the fuel tank, so that the fuel surface in the fuel tank can be turned over during operation on a severe slope of a construction machine or a momentary fluctuation due to a strong shock or an accident. When tilted and raised to the top of the ventilation pipe, the floating port closes the ventilation hole by buoyancy to prevent the fuel from leaking to the outside.

건설기계, 연료탱크, 환기장치, 연료누출, 부유구, 부력Construction machinery, fuel tanks, ventilators, fuel leaks, floats, buoyancy

Description

연료누출 방지기능을 구비한 건설기계의 연료탱크 환기장치{fuel tank ventilation apparatus preventing fuel leakage for construction machine} Fuel tank ventilation apparatus preventing fuel leakage for construction machine             

도 1은 본 발명에 따른 실시예의 단면도.1 is a cross-sectional view of an embodiment according to the present invention.

도 2는 본 발명에 따른 실시예의 설치상태 사시도.Figure 2 is a perspective view of the installation state of the embodiment according to the present invention.

도 3은 본 발명의 작용 원리를 나타낸 단면도이다.
3 is a cross-sectional view showing the working principle of the present invention.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

10 : 연료탱크 20 : 환기관10: fuel tank 20: ventilation pipe

25 : 상단부 30 : 환기공25: upper part 30: ventilator

40 : 부유구 50 : 지지판40: floating port 50: support plate

55 : 관통공 60 : 환기필터55 through hole 60 ventilation filter

70 : 보호커버
70: protective cover

본 발명은 연료누출 방지기능을 구비한 건설기계의 연료탱크 환기장치에 관한 것으로서, 보다 상세하게는 연료에 부유할 수 있는 부유구를 연료탱크의 환기관 내에 상하로 유동가능하게 내포시킴에 의해, 심한 경사면에서의 작업, 순간적인 요동 또는 전복에 의해 연료 탱크 내의 연료 표면이 기울어져 환기관 상단까지 상승한 경우 부유구가 환기관에 형성된 환기공을 부력에 의해 폐쇄시키도록 함으로써, 연료가 외부로 누출되는 것을 방지할 수 있는 연료누출 방지기능을 구비한 건설기계의 연료탱크 환기장치에 관한 것이다.
The present invention relates to a fuel tank ventilation device of a construction machine having a fuel leakage prevention function, and more particularly, by containing a floating port that can be suspended in fuel so as to be able to flow up and down in the ventilation pipe of the fuel tank. When the fuel surface in the fuel tank tilts and rises to the top of the ventilation pipe due to work on an inclined surface, instantaneous rocking or overturning, the floating port causes the ventilation hole formed in the ventilation pipe to close by buoyancy to prevent the fuel from leaking to the outside. The present invention relates to a fuel tank ventilation device for a construction machine having a fuel leakage prevention function.

연료탱크가 외기와 차단되어 밀폐되면, 장시간의 직사광선 노출 또는 외기의 상승 등의 원인에 의해 연료탱크 내부 온도가 상승됨에 따라 연료탱크 내의 기체가 팽창하여 이상 고압이 형성되어 위험해 질 수 있으며, 또는 기계의 작동에 의해 연료가 소모됨에 따라 연료탱크 내에 진공에 의한 음압이 발생하여 연료펌프의 기능이 방해될 수 있다. 따라서, 연료탱크는 일반적으로 외기와 통기되는 환기구가 구비된다.When the fuel tank is sealed off from the outside air, the internal temperature of the fuel tank is increased due to prolonged exposure to direct sunlight or the rise of the outside air, so that the gas in the fuel tank expands, and abnormal high pressure may be formed. As the fuel is consumed by the operation of the machine, a negative pressure is generated by the vacuum in the fuel tank, which may interfere with the function of the fuel pump. Therefore, the fuel tank is generally provided with a vent for venting the outside air.

그런데 건설기계는 경사가 심한 지형에서 기울어진 상태로 작업을 수행하는 경우가 많으며, 평지에서의 작업이라 하더라도 작업 과정에서 강력한 충격에 의해 기체가 순간적으로 요동되기도 하며, 때로는 사고로 인해 기체가 전복되는 경우가 발생하기도 한다. 이에 따라 연료탱크 내의 연료 표면은 기울어지게 되고 정도가 심하면 연료가 환기구 상단부까지 차올라오게 된다.However, the construction machinery is often inclined in a sloped terrain, even when working on a flat surface, the aircraft suddenly swings due to a strong impact during the work process, sometimes the aircraft overturns due to an accident Sometimes it happens. As a result, the fuel surface in the fuel tank is inclined, and when the degree is severe, fuel rises up to the upper end of the vent.

종래의 환기구는 이러한 경우 연료가 환기구를 통해 외부로 누출됨에 따라 건설기계의 외관이 더러워지며 토양이 오염되고 연료 손실에 의한 경제적 비용이 증가하는 문제점이 있었다.In the conventional ventilation port, as the fuel leaks to the outside through the ventilation hole, the exterior of the construction machine becomes dirty, and the soil is contaminated and the economic cost due to the fuel loss increases.

또한, 건설기계의 작업 현장은 미세 먼지, 분진 기타 대기 오염 물질에 항시 노출되기 마련이어서 환기구에는 분진 기타 외부의 이물질이 연료탱크 내로 유입되는 것을 방지하기 위해 환기구 외주연으로 환기필터가 구비된다. 그러나 이러한 환기필터는 외부로 돌출되어 있어 외부의 충격에 취약하며 건설기계의 작동 시 발생하는 진동이나 충격에 의해 쉽게 파손되거나 환기구로부터 이탈되어 제 기능을 발휘하지 못하는 문제점이 있었다.
In addition, the construction site of the construction equipment is always exposed to fine dust, dust and other air pollutants, and the ventilation opening is provided with a ventilation filter on the outer periphery of the ventilation opening to prevent foreign matter from entering the fuel tank. However, such a ventilation filter is protruded to the outside, so it is vulnerable to external shocks and has a problem in that it is easily broken by vibration or shock generated during operation of a construction machine or is separated from the ventilation hole so as not to function properly.

본 발명은 상술한 바와 같은 문제점을 해결하기 위해 안출된 것으로, 본 발명의 목적은 환기관 내에 연료에 부유할 수 있는 부유구를 설치함에 의해 심한 경사면에서의 작업, 순간적인 요동 또는 사고에 의한 전복 시 연료가 환기구를 통해 외부로 누출되는 것을 방지할 수 있는 건설기계의 연료탱크 환기장치를 제공하는데 있다.The present invention has been made to solve the above problems, an object of the present invention is to install a floating port that can be suspended in the fuel in the ventilation pipe when the work on a severe slope, instantaneous swinging or overturning due to accidents. It is to provide a fuel tank ventilator for construction machinery that can prevent fuel from leaking to the outside through the vents.

본 발명의 다른 목적은 환기필터를 보호하는 보호커버를 설치함에 의해 기체의 진동이나 외부 충격에 의해 환기필터가 파손되거나 환기관으로부터 이탈되는 것을 방지함으로써 환기필터의 제 기능을 충분히 발휘하고 수명을 연장할 수 있는 건설기계의 연료탱크 환기장치를 제공하는데 있다.
Another object of the present invention is to install a protective cover to protect the ventilation filter to prevent the ventilation filter from being damaged or detached from the ventilation pipe by the vibration or external shock of the gas to fully exhibit the proper function of the ventilation filter and to extend the life. To provide fuel tank ventilation for construction machinery.

상기의 목적을 달성하기 위하여, 본 발명은 연료탱크 상면에 설치되고 환기공이 상단부에 형성된 환기관과, 연료 표면에 부유되도록 형성되고 연료 표면 위치에 따라 환기공을 개폐시키도록 환기관에 유동가능하게 내설되는 부유구, 및 환기관 내부에 설치되며 부유구가 연료탱크 내부로 낙하되지 않도록 지지하며 연료 또는 공기가 통과되는 관통공이 형성된 지지판을 포함하여 이루어지는 것을 특징으로 하는 연료누출 방지기능을 구비한 건설기계의 연료탱크 환기장치를 제공한다.In order to achieve the above object, the present invention is installed in the upper surface of the fuel tank and the ventilation hole is formed in the upper end, and is formed to be floating on the fuel surface and is installed in the ventilation tube to open and close the ventilation hole according to the fuel surface position The fuel outlet of the construction machine with a fuel leakage prevention function, characterized in that it is installed inside the floating port, and the ventilation pipe and supporting the floating port so as not to fall into the fuel tank and formed through-holes through which fuel or air passes. Provide tank ventilation.

환기관 상단부의 내측면은 곡면으로 형성되도록 함으로써 경사면에서의 작업 등의 이유로 연료 표면이 기울어져 환기관 상단부까지 상승한 경우 부유구가 부력에 의해 부상됨에 따라 곡면에 의하여 유도되어 최적의 위치에서 환기공을 밀폐시키도록 하는 것이 바람직하다.The inner surface of the upper part of the ventilation pipe is formed to be curved, so when the fuel surface is inclined and rises to the upper part of the ventilation pipe due to the work on the inclined surface, it is guided by the curved surface as the floating port is floated by buoyancy to seal the ventilation hole at the optimum position. It is desirable to make it.

환기관 외주연에는 환기필터가 고정 설치되어 분진 기타 외부 물질이 연료탱크 내로 유입되는 것을 방지한다. 뿐만 아니라 이러한 환기필터가 우수에 노출되어 기능이 손상되거나 외부의 충격에 의해 파손 또는 환기관으로부터 이탈되는 것을 방지하는 보호커버가 환기필터에 착탈가능하게 설치되는 것이 바람직하다.
Ventilation filters are fixedly installed at the outer periphery of the ventilation pipe to prevent dust and other foreign matter from entering the fuel tank. In addition, it is preferable that a protective cover is detachably installed on the ventilation filter to prevent such a ventilation filter from being exposed to rainwater, thereby preventing its function from being damaged or from being damaged or detached from the ventilation pipe by an external impact.

이하, 첨부 도면의 바람직한 실시예를 통하여, 본 발명에 따른 건설기계의 연료탱크 환기장치의 구성과 작용을 보다 구체적으로 살펴본다.Hereinafter, with reference to the preferred embodiment of the accompanying drawings, looks at the configuration and operation of the fuel tank ventilation device of the construction machine according to the present invention in more detail.

도 1은 본 발명에 따른 실시예를 나타낸 단면도이고, 도 2는 본 발명에 따른 실시예를 나타낸 설치상태 사시도이다. 도시된 바와 같이, 본 발명에 따른 실시예 는 연료탱크(10) 상면에 설치되며 상단부(25)에는 환기공(30)이 구비된 환기관(20)과, 연료 표면에 부유되도록 형성되고 연료의 표면 위치에 따라 부유하여 상하로 유동가능하게 환기관(20)에 내설되는 부유구(40), 및 환기관(20) 내부에 고정 설치되며 부유구(40)가 연료탱크(10) 내부로 낙하되지 않도록 지지하며 연료 또는 공기가 통과되는 관통공(55)이 형성된 지지판(50)으로 구성되는 연료누출 방지기능을 구비한 건설기계의 연료탱크 환기장치이다.1 is a cross-sectional view showing an embodiment according to the present invention, Figure 2 is a perspective view of the installation state showing an embodiment according to the present invention. As shown, the embodiment according to the present invention is installed on the upper surface of the fuel tank 10 and the upper end 25 is formed with a ventilation pipe 20 having a ventilation hole 30, and is formed to float on the fuel surface and the surface of the fuel Floating opening 40 is installed in the ventilation pipe 20, and the inside of the ventilation pipe 20, and floating in accordance with the position to be able to flow up and down, and the floating port 40 is supported so as not to fall into the fuel tank (10) And it is a fuel tank ventilation device of a construction machine having a fuel leakage prevention function composed of a support plate 50 is formed through-hole 55 through which fuel or air passes.

부유구(40)는 연료의 비중보다 상대적으로 작은 재료로 형성되거나 비중이 큰 재료로 형성되더라도 내부에 중공이 구비됨에 따라 부력에 의해 연료 표면에 충분히 부유될 수 있도록 한다. 또한 부유구(40)는 구체의 형상으로 형성되며, 외경은 환기관(20) 내경보다 약간 작게 형성됨으로써 환기관(20) 내측면과 부유구(40) 사이에 틈이 형성되어 통기가능하도록 한다.The floating hole 40 is formed of a material relatively smaller than the specific gravity of the fuel, or even formed of a material having a large specific gravity, so that the hollow is provided therein so that it can be sufficiently suspended on the fuel surface by buoyancy. In addition, the floating hole 40 is formed in the shape of a sphere, the outer diameter is formed to be slightly smaller than the inner diameter of the ventilation pipe 20, a gap is formed between the inner surface of the ventilation pipe 20 and the floating hole 40 to enable ventilation.

환기공(30)은 환기관(20) 상단부(25)에 형성되며 부유구(40)의 외경보다 충분히 작은 직경으로 형성되어 연료 표면이 상승하여 부유구(40)가 부력에 의해 부상되는 경우 부유구(40)의 외측면에 의해 완전히 밀폐되도록 한다. 바람직하게는 환기공(30) 내주연에 탄성부재의 패킹이 설치되어 밀폐가 효과적으로 이루어지도록 한다.The ventilation hole 30 is formed in the upper end portion 25 of the ventilation pipe 20 and is formed with a diameter sufficiently smaller than the outer diameter of the floating hole 40 so that the fuel surface rises so that the floating hole 40 is floated by buoyancy. It is to be completely sealed by the outer surface of the (40). Preferably, the packing of the elastic member is installed at the inner circumference of the ventilation hole 30 so that the sealing is effectively performed.

환기관(20) 상단부(25)의 내측면은 곡면으로 형성됨으로써, 부유구(40)가 부상하는 경우 임의의 방향으로 연료 표면이 기울어지더라도 부유구(40)가 상기의 곡면에 의해 유도되어 최적의 위치에서 환기공(30)을 밀폐시키도록 한다.
Since the inner surface of the upper end portion 25 of the ventilation pipe 20 is formed as a curved surface, the floating sphere 40 is guided by the curved surface even if the fuel surface is inclined in any direction when the floating sphere 40 floats. To seal the ventilation hole (30) at the position of.

또한, 본 발명에 따른 실시예는 환기관(20) 외주연에 고정 설치되는 환기필터(60)가 구비되며, 환기필터(60)를 보호하는 보호커버(70)가 더 구비된다. 환기필터(60)는 건설기계가 작업하는 현장에서 통상 발생하는 분진, 미세먼지 기타 외부의 대기 부유 물질을 걸러 환기관(20)을 통하여 연료탱크(10) 내로 유입되는 것을 방지한다. In addition, the embodiment according to the present invention is provided with a ventilation filter 60 fixed to the outer periphery of the ventilation pipe 20, a protective cover 70 for protecting the ventilation filter 60 is further provided. The ventilation filter 60 filters the dust, fine dust, and other air suspended substances that are normally generated at the work site of the construction machine to prevent the inflow into the fuel tank 10 through the ventilation pipe 20.

보호커버(70)는 환기필터(60)에 착탈되도록 설치되며 환기필터(60)의 상면 및 측면을 보호할 수 있도록 캡의 형상을 하는 것이 바람직하다. 보호커버(70)는 환기필터(60)가 우수 또는 작업 현장에서 사용되는 작업수에 의해 젖어 기능을 상실하는 것을 방지하며, 환기필터(60)가 외부 물체에 의해 파손되는 것을 방지하고 건설기계의 작동 시 발생하는 진동이나 강력한 충격에 의해 환기관(20)으로 이탈 분리되는 것을 방지한다.
The protective cover 70 is installed to be attached to and detached from the ventilation filter 60 and preferably has a shape of a cap to protect the upper and side surfaces of the ventilation filter 60. The protective cover 70 prevents the ventilation filter 60 from being wetted by the water used in the rain or the work site and loses its function, and prevents the ventilation filter 60 from being damaged by external objects and It prevents the separation and separation to the ventilation pipe 20 by the vibration or strong impact generated during operation.

상술한 구성으로 이루어지는 건설기계의 연료탱크 환기장치의 작동을 설명하면 다음과 같다. 도 3은 본 발명의 작용 원리를 설명하기 위해 나타낸 단면도이다. 도시된 바와 같이, 건설기계가 심한 경사면에서 작업을 수행하거나, 건설기계가 작업하는 과정에서 심한 충격을 받아 기체가 순간적으로 심한 요동을 치거나, 사고로 인해 건설기계가 전복되는 경우 연료탱크 내의 연료 표면은 심하게 기울어지게 되고 연료가 지지판(50)의 관통공(55)을 통해 환기관(20) 내로 차올라오게 된다.(B 상태) 이에 따라 부유구(40)는 부력을 받아 연료 표면에 떠서 환기관(20) 상단부로 부상하게 된다. 연료 표면이 계속해서 환기관(20) 내부에서 상승하게 되면 부유구 (40)는 부력에 의해 환기공(30)을 밀폐시킴으로써 연료가 환기장치를 통해 외부로 유출되는 것이 방지된다.Referring to the operation of the fuel tank ventilation of the construction machine having the above-described configuration as follows. 3 is a cross-sectional view for explaining the working principle of the present invention. As shown, the fuel in the fuel tank when the construction machine performs work on a severe slope, when the gas is momentarily severely shaken due to a severe shock while the construction machine is working, or the construction machine is overturned due to an accident. The surface is inclined severely and fuel is drawn up into the ventilation pipe 20 through the through hole 55 of the support plate 50. (B state) Accordingly, the floating port 40 is buoyant and floats on the fuel surface to provide the ventilation pipe ( 20) It will rise to the top. If the fuel surface continues to rise inside the ventilation pipe 20, the floating port 40 is closed by the buoyancy to the ventilation hole 30 to prevent the fuel from flowing out through the ventilator.

건설기계가 경사면을 벗어나거나, 순간적인 요동이 가라앉는 등 연료 표면의 경사가 원상태로 회복되면 환기관(20) 내에 차올라있던 연료는 지지판(50)의 관통공(55)을 통해 연료탱크(10)로 유입되며 이에 따라 부유구(40)도 부력을 잃고 하강하여 지지판(50)에 이르러서 정지된다.(A 상태)
When the inclined surface of the fuel is restored to its original state, such as when the construction machine is off the slope or the instantaneous fluctuations are settled, the fuel, which is filled in the ventilation pipe 20, is transferred to the fuel tank 10 through the through hole 55 of the support plate 50. As it flows into the floating sphere 40 also loses buoyancy and descends to reach the support plate 50 is stopped (A state).

상술한 바와 같은 본 발명의 연료탱크 환기장치에 따르면, 연료가 환기구를 통해 외부로 누출되지 않도록 함으로써 누출되는 연료에 의한 건설 기계 및 토양의 오염을 미연에 방지하고 연료 손실에 따른 비용을 감소시키는 효과가 있다. 뿐만 아니라 본 발명의 연료탱크 환기장치는 구조가 간단하고 연료 자체에서 생성되는 부력을 이용하여 연료 누출을 방지하는 구조이므로 에너지가 소모되지 않으며 반영구적으로 사용될 수 있다.According to the fuel tank ventilator of the present invention as described above, by preventing the fuel from leaking to the outside through the air vent, the pollution of the construction machinery and soil by the leaked fuel in advance and the effect of reducing the cost of fuel loss There is. In addition, the fuel tank ventilator of the present invention has a simple structure and prevents fuel leakage by using buoyancy generated by the fuel itself, and thus does not consume energy and can be used semi-permanently.

또한 본 발명은 환기필터를 보호하는 보호커버를 설치함으로써, 환기필터가 훼손되거나 환기관으로부터 이탈되는 것을 방지하고 환기필터가 제 기능을 충분히 발휘하도록 하여 우수, 분진 기타 외부 이물질이 연료탱크 내부로 유입되는 것을 방지하는 효과가 있다.In addition, the present invention by installing a protective cover to protect the ventilation filter, to prevent the ventilation filter from being damaged or detached from the ventilation pipe and to ensure that the ventilation filter is fully functional, the dust, dust and other foreign matter is introduced into the fuel tank. It is effective to prevent that.

Claims (4)

삭제delete 연료탱크 상면에 설치되고 환기공이 상단부에 형성된 환기관,Ventilation pipe is installed on the upper surface of the fuel tank and the ventilation hole is formed at the upper end, 연료 표면에 부유되도록 형성되고, 연료 표면 위치에 따라 상기 환기공을 개폐시키도록 상기 환기관에 유동가능하게 내설되는 부유구,A floating port which is formed to float on a fuel surface and is flowable in the ventilation pipe to open and close the ventilation hole according to the fuel surface position, 상기 환기관 내부에 설치되며, 상기 부유구가 연료탱크 내부로 낙하되지 않도록 지지하며 연료 또는 공기가 통과되는 관통공이 형성된 지지판을 포함하는 연료누출 방지기능을 구비한 건설기계의 연료탱크 환기장치에 있어서,In the fuel tank ventilator of the construction machine equipped with a fuel leakage prevention function is installed in the ventilation pipe, the support is formed so that the floating port does not fall into the fuel tank and formed through-holes through which fuel or air passes. 상기 환기관 상단부의 내측면은 곡면으로 형성된 것을 특징으로 하는 연료누출 방지기능을 구비한 건설기계의 연료탱크 환기장치.Fuel tank ventilation device for a construction machine having a fuel leakage prevention function, characterized in that the inner surface of the upper end of the ventilation pipe is formed in a curved surface. 삭제delete 삭제delete
KR1020040070375A 2004-09-03 2004-09-03 fuel tank ventilation apparatus preventing fuel leakage for construction machine KR101088751B1 (en)

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DE102014015941A1 (en) 2013-11-20 2015-05-21 Mann + Hummel Gmbh Tank ventilation filter with downpipe
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KR102265184B1 (en) * 2019-07-09 2021-06-15 한국앤컴퍼니 주식회사 Sulfuric acid leakage prevention device for lead acid battery
KR102617643B1 (en) * 2021-04-30 2023-12-27 한국앤컴퍼니 주식회사 Sulfuric acid leakage prevention device for lead acid battery

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JPH10297592A (en) * 1997-04-25 1998-11-10 Hitachi Zosen Corp Aerator for marine fuel tank
KR100333861B1 (en) 1999-08-06 2002-04-25 류정열 A float valve used in a fuel supply system of an automobile
KR100517400B1 (en) 1998-06-18 2005-09-28 로베르트 보쉬 게엠베하 Device for conveying fuel from a tank to the internal combustion engine of a motor vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10297592A (en) * 1997-04-25 1998-11-10 Hitachi Zosen Corp Aerator for marine fuel tank
KR100517400B1 (en) 1998-06-18 2005-09-28 로베르트 보쉬 게엠베하 Device for conveying fuel from a tank to the internal combustion engine of a motor vehicle
KR100333861B1 (en) 1999-08-06 2002-04-25 류정열 A float valve used in a fuel supply system of an automobile

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