CN211468159U

CN211468159U - Anti-overflow oil filler structure of rotational molding fuel tank

Info

Publication number: CN211468159U
Application number: CN201922414335.9U
Authority: CN
Inventors: 郭文政
Original assignee: Jiangsu Shengtai Anticorrosive Equipment Co ltd
Current assignee: Jiangsu Shengtai Anticorrosive Equipment Co ltd
Priority date: 2019-12-29
Filing date: 2019-12-29
Publication date: 2020-09-11
Anticipated expiration: 2029-12-29

Abstract

The utility model discloses an anti-overflow oil filler hole structure of rotational moulding fuel tank, concretely relates to vehicle fuel tank field, including the box, oil filler hole, gas outlet have been seted up to the top surface of box, and the oil-out has been seted up to the bottom surface of box, and level sensor is installed to the top surface of box inner chamber, and the inside threaded connection of oil filler hole has the siphonozooid, and the pocket ball portion is installed to the bottom of siphonozooid, and the internally mounted of gas outlet has oil removal breather valve, and the bottom of oil-out is. The utility model discloses a set up separation ball and sealed seat cover, contact with the separation ball of siphonozooid bottom after the inside oil mass of fuel tank is too much and produce certain pressure and promote the separation ball upwards to float and agree with mutually with sealed seat cover and form seal structure, lead to the unable inside that gets into the siphonozooid of fluid, consequently thoroughly stopped the problem that fluid spills over easily, and the oil mass is more its thrust to seal structure is big more for this anti-overflow oil filler hole structural seal nature is showing and is promoting.

Description

Anti-overflow oil filler structure of rotational molding fuel tank

Technical Field

The utility model relates to a vehicle fuel tank technical field, more specifically says, the utility model specifically is an anti-overflow oil filler hole structure of rotational moulding fuel tank.

Background

The vehicle fuel tank comprises a tank body, wherein the top of the tank body is provided with an oil return port, a fuel filling port and an exhaust port, the bottom of the tank body is provided with an oil outlet, hydraulic oil which flows back through an oil return pipeline in the vehicle fuel tank has higher temperature (above 100 ℃), also has higher oil return pressure and is accompanied with a large amount of bubbles, and is impacted by the oil return pressure in long-term use, the hydraulic oil is easy to splash in the tank body, and then overflows from the fuel filling port or the exhaust port to generate stamping leakage, so that the problem that the existing hydraulic fuel tank generally exists and is difficult to overcome is solved.

In order to solve the above problems, patent application publication No. CN208263970U discloses an anti-overflow filler structure of a rotational molding fuel tank, which refers to fig. 5 of the specification, and the anti-overflow filler structure in the application can effectively relieve the downward pressure of high-temperature and high-pressure hydraulic oil after passing through the filler 11, decompose the downward pressure of the hydraulic oil, prevent splashing, and effectively avoid the overflow phenomenon of the hydraulic oil from the refueling position.

However, the above technical solutions still have many disadvantages in practical use: because this anti-overflow oil filler hole structure reuse straight long tubulose body is deep into inside the fuel tank, in the in-service use when fuel is added and is annotated, the injection pressure of the fuel of newly adding must be greater than the hydraulic pressure of tubulose body bottom port department, just can inject into the fuel tank, consequently can't accomplish the oiling fast when the inside oil mass of fuel tank is more or when the oiling pressure is less, consequently the oiling need use dedicated fluid supercharging device to carry out the oiling such as oil pump, and when the inside fluid of fuel tank is too much, the condition that still can take place to spill over has certain defect.

It is therefore desirable to provide a spill proof filler neck structure for rotomoulded fuel tanks that allows for quick filling and good sealing.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the utility model provides an anti-overflow oil filler structure of rotational moulding fuel tank, through setting up separation ball and sealed seat cover, contact with the separation ball of tubulose body bottom after the too much oil mass in the fuel tank and produce certain pressure and promote the separation ball to float upwards and agree with mutually with sealed seat cover and form seal structure, lead to fluid can't get into the inside of tubulose body, therefore thoroughly stopped the easy problem that overflows of fluid, and the more the oil mass is, the more its thrust to seal structure is big, make the anti-overflow oil filler structure leakproofness show and promote; additionally, the utility model discloses a agree with each other between separation ball and the sealed seat cover and form seal structure, can't provide buoyancy for the separation ball promptly and seal when the inside fluid of fuel tank is less, when the inside oil mass of fuel tank is too much, only need the internal fluid of pouring into of tubulose to be higher than the inside liquid level of box, become decurrent pressure to the separation ball and open seal structure promptly, conveniently carry out the oiling to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an anti-overflow oil filler hole structure of rotational moulding fuel tank, includes the box, oil filler hole, gas outlet have been seted up to the top surface of box, the oil-out has been seted up to the bottom surface of box, the top surface fixed mounting of box inner chamber has level sensor, the inside threaded connection of oil filler hole has the siphonozooid, the bottom fixed mounting of siphonozooid has the pocket ball portion, the inside fixed mounting of gas outlet has oil removal breather valve, the bottom fixedly connected with valve of oil-out, box, oil filler hole, gas outlet, oil-out are the integrated into one piece structure.

In a preferred embodiment, a threaded port adapted to the fuel filler opening is fixedly installed at a top end of the tubular body, a threaded groove is formed in the threaded port, and an adapted fuel tank cap is provided, and threads of the threaded port and the fuel filler opening and threads of the threaded port and the fuel tank cap are screwed in opposite directions.

In a preferred embodiment, the bottom end of the tubular body is of an outward-expanding structure, the inner side of the outward-expanding structure is a spherical concave surface, the spherical concave surface at the bottom end of the tubular body is fixedly clamped with a sealing seat sleeve, and the inside of the sealing seat sleeve is movably sleeved with a matched blocking ball.

In a preferred embodiment, the sealing sleeve is a high temperature resistant rubber member, the outer side of the sealing sleeve fits the inner side of the bottom of the tubular body, the inner side of the sealing sleeve fits the surface of the blocking ball, the blocking ball is a hollow ball body, and the blocking ball is a stainless steel member.

In a preferred embodiment, the ball pocket portion has a net structure, a bottom surface of the ball pocket portion has a circular arc shape, and a height of the ball pocket portion is equal to a diameter of the blocking ball.

In a preferred embodiment, the tubular body has a tapered structure, the inner diameter of the top end of the tubular body is larger than that of the bottom end of the tubular body, the inner wall of the tubular body has a smooth structure, and the tubular body and the threaded port are integrally formed.

In a preferred embodiment, the oil-separating vent valve is fixedly connected with the air outlet through threads, and a plurality of vent holes are formed in the top end of the peripheral side of the oil-separating vent valve and are uniformly distributed.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a through setting up separation ball and sealed seat cover, contact with the separation ball of tubulose body bottom after the oil mass is too much and produce certain pressure in the fuel tank and promote the separation ball to float upwards and agree with mutually with sealed seat cover and form seal structure, lead to fluid can't get into the inside of tubulose body, therefore thoroughly stopped the easy problem that overflows of fluid, and the more the oil mass is, the more its thrust to seal structure is big, make this anti-overflow oil filler hole structural seal nature promote apparently;

2. the utility model discloses a agree with each other between separation ball and the sealed seat cover and form seal structure, can't provide buoyancy for the separation ball promptly and seal when the inside fluid of fuel tank is less, when the inside oil mass of fuel tank is too much, only need the internal fluid of pouring into of tubulose to be higher than the inside liquid level of box, become decurrent pressure to the separation ball and open seal structure promptly, conveniently carry out the oiling.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the tubular body and the blocking ball of the present invention.

Fig. 3 is a schematic structural diagram of fig. 1A of the present invention.

Fig. 4 is a schematic structural view of the sealing seat cover and the separation ball of the present invention.

Fig. 5 is a schematic diagram of a comparison file structure of the present invention.

The reference signs are: 1. a box body; 11. an oil filler; 12. an air outlet; 13. an oil outlet; 2. a ball pocket part; 3. a tubular body; 31. a threaded port; 32. a fuel tank cap; 33. sealing the seat cover; 34. a blocking ball; 4. a liquid level sensor; 5. an oil-separating vent valve; 6. and (4) a valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The anti-overflow oil filler structure of the rotational molding fuel tank shown in the attached figures 1-4 comprises a tank body 1, an oil filler 11 and an air outlet 12 are arranged on the top surface of the tank body 1, an oil outlet 13 is arranged on the bottom surface of the tank body 1, a liquid level sensor 4 is fixedly arranged on the top surface of an inner cavity of the tank body 1, a tubular body 3 is in threaded connection with the inner part of the oil filler 11, a ball pocket part 2 is fixedly arranged at the bottom end of the tubular body 3, an oil separation ventilation valve 5 is fixedly arranged inside the air outlet 12, a valve 6 is fixedly connected at the bottom end of the oil outlet 13, and the tank body 1, the oil filler.

The implementation mode is specifically as follows: by arranging the blocking ball 34 and the sealing sleeve 33, when the oil quantity in the fuel tank is too much and the blocking ball 34 at the bottom end of the tubular body 3 is contacted with the blocking ball 34 to push the blocking ball 34 to float upwards to be matched with the sealing sleeve 33 to form a sealing structure after certain pressure is generated, oil cannot enter the tubular body 3, so that the problem that the oil easily overflows is thoroughly solved, and the thrust on the sealing structure is higher as the oil quantity is higher, so that the sealing performance of the anti-overflow oil filler opening structure is remarkably improved; additionally, the utility model discloses a mutually agree with between separation ball 34 and the sealed sleeve 33 and form seal structure, can't provide buoyancy for separation ball 34 and seal when the inside fluid of fuel tank is less promptly, when the inside oil mass of fuel tank is too much, only need the fluid of pouring into in the siphonozooid 3 to be higher than the inside liquid level of box 1, open seal structure promptly to the spherical decurrent pressure that becomes of separation, conveniently carry out the oiling.

Wherein, the top end of the tubular body 3 is fixedly provided with a thread port 31 matched with the oil filling port 11, the inside of the thread port 31 is provided with a thread groove and is provided with a matched oil tank cover 32, the thread of the thread port 31 and the oil filling port 11 and the thread turning direction of the thread port 31 and the oil tank cover 32 are opposite, the installation of the tubular body 3 is realized, and the oil leakage caused by the loosening of the threads of the oil filling port 11 and the thread port 31 when the oil tank cover 32 is opened is prevented.

Wherein, the bottom of siphonozooid 3 is outer expanding type structure, and the inboard of outer expanding type structure is spherical concave surface, and the fixed joint of spherical concave surface of siphonozooid 3 bottom has sealed seat cover 33, and the separation ball 34 of looks adaptation has been cup jointed in the inside activity of sealed seat cover 33, realizes seal structure's installation.

Wherein, the sealing seat cover 33 is a high temperature resistant rubber component, the outer side of the sealing seat cover 33 is fit with the inner side of the bottom of the tubular body 3, the inner side of the sealing seat cover 33 is fit with the surface of the blocking ball 34, the blocking ball 34 is a hollow sphere, the blocking ball 34 is a stainless steel component, and the sealing seat cover 33 and the blocking ball 34 are utilized to form a sealing mechanism.

Wherein, pocket ball portion 2 is network structure, and the bottom surface of pocket ball portion 2 is circular-arc, and the height of pocket ball portion 2 equals the diameter of separation ball 34, makes separation ball 34 can be because of gravity whereabouts to pocket ball portion 2, realizes opening of seal structure.

Wherein, the siphonozooid 3 is the toper structure, and the top internal diameter of siphonozooid 3 is greater than the bottom internal diameter, and the inner wall of siphonozooid 3 is plain structure, and siphonozooid 3, screw thread port 31 are integrated into one piece structure, strengthen the structural strength of siphonozooid 3.

Wherein, the oil-separating vent valve 5 is fixedly connected with the air outlet 12 through threads, and a plurality of air holes are uniformly distributed on the top end of the peripheral side of the oil-separating vent valve 5, so that the pressure balance inside the oil tank is realized.

Wherein, the model of the oil-separating vent valve 5 is NBV-M12 type oil tank metal two-way vent valve.

The utility model discloses the theory of operation:

firstly, a sealing seat sleeve 33 is clamped in a circular groove on the bottom surface of a tubular body 3, a blocking ball 34 is placed in the sealing seat sleeve, a ball pocket part 2 is used for sealing and fixing, the tubular body 3 is fixedly arranged in a box body 1 through a fuel filling port 11 and a threaded port 31, an oil-blocking vent valve 5 and a valve 6 are arranged at the end parts of a gas outlet 12 and a fuel outlet 13, when the oil in the box body 1 is lower than the bottom surface of the ball pocket part 2, the blocking ball 34 cannot be contacted with the sealing seat sleeve 33 due to gravity, the sealing structure is in an open state, oil can be filled by opening a fuel tank cover 32, when the oil in the fuel tank is too much and generates certain pressure, the blocking ball 34 is contacted with the blocking ball 34 at the bottom end of the tubular body 3 to push the blocking ball 34 to float upwards to be matched with the sealing seat sleeve 33 to form a sealing structure, the oil cannot enter the inside the, make this anti-overflow oil filler hole structural seal nature show the promotion, when being higher than the inside liquid level height of box 1 to the fluid that injects into in the tubular body 3 during the oiling, open seal structure promptly to the spherical decurrent pressure that forms of separation, conveniently carry out the oiling.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an anti-overflow oil filler hole structure of rotational moulding fuel tank, includes box (1), oil filler hole (11), gas outlet (12) have been seted up to the top surface of box (1), oil-out (13) have been seted up to the bottom surface of box (1), the top surface fixed mounting of box (1) inner chamber has level sensor (4), its characterized in that: the oil-gas separation device is characterized in that the inside of the oil filling port (11) is in threaded connection with a tubular body (3), the bottom end of the tubular body (3) is fixedly provided with a ball pocket portion (2), the inside of the gas outlet (12) is fixedly provided with an oil separation ventilation valve (5), the bottom end of the oil outlet (13) is fixedly connected with a valve (6), and the box body (1), the oil filling port (11), the gas outlet (12) and the oil outlet (13) are of an integrally formed structure.

2. The spill-proof filler cap structure of a rotational molding fuel tank according to claim 1, characterized in that: the top fixed mounting of siphonozooid (3) has screw thread port (31) with oil filler hole (11) looks adaptation, the thread groove is seted up and oil tank cap (32) of looks adaptation is provided with to the inside of screw thread port (31), screw thread port (31) and the screw thread of oil filler hole (11) and screw thread of screw thread port (31) and oil tank cap (32) are revolved to being opposite direction.

3. The spill-proof filler cap structure of a rotational molding fuel tank according to claim 1, characterized in that: the bottom of siphonozooid (3) is outer type structure that expands, the inboard of outer type structure that expands is spherical concave surface, the fixed joint of spherical concave surface of siphonozooid (3) bottom has sealed seat cover (33), the separation ball (34) of looks adaptation has been cup jointed in the inside activity of sealed seat cover (33).

4. The spill-proof filler cap structure of a rotational molding fuel tank according to claim 3, characterized in that: the sealing seat cover (33) is a high-temperature-resistant rubber component, the outer side of the sealing seat cover (33) is matched with the inner side of the bottom of the tubular body (3), the inner side of the sealing seat cover (33) is matched with the surface of the blocking ball (34), the blocking ball (34) is a hollow ball body, and the blocking ball (34) is a stainless steel component.

5. The spill-proof filler cap structure of a rotational molding fuel tank according to claim 3, characterized in that: the ball pocket part (2) is of a net structure, the bottom surface of the ball pocket part (2) is arc-shaped, and the height of the ball pocket part (2) is equal to the diameter of the separation ball (34).

6. The spill-proof filler cap structure of a rotational molding fuel tank according to claim 2, characterized in that: the pipe-shaped body (3) is of a conical structure, the top end inner diameter of the pipe-shaped body (3) is larger than the bottom end inner diameter, the inner wall of the pipe-shaped body (3) is of a smooth surface structure, and the pipe-shaped body (3) and the thread port (31) are of an integrally formed structure.

7. The spill-proof filler cap structure of a rotational molding fuel tank according to claim 1, characterized in that: the oil-separating vent valve (5) is fixedly connected with the air outlet (12) through threads, and a plurality of vent holes are formed in the top end of the peripheral side of the oil-separating vent valve (5) and are uniformly distributed.