Low-permeability plastic fuel tank assembly

Abstract

The utility model discloses a low-permeability plastic fuel tank assembly, which relates to the technical field of fuel tanks, and comprises a fuel tank shell, one side of the top of the fuel tank shell is fixedly communicated with a fuel port, the low-permeability plastic fuel tank assembly can prevent fuel from permeating through the barrier property of ethylene-vinyl alcohol copolymer, and the safety of fuel storage is improved. Meanwhile, fuel oil loss is reduced, the protection layer further enhances the anti-permeation effect, the fuel oil tank structure is protected under the external force impact or severe environment, the high-density polyethylene base layer is prevented from being damaged, the supporting shell improves the impact resistance of the fuel oil tank in the transportation and use process through stable external supporting, and through reasonable stress dispersion, the service life of the fuel oil tank is prolonged. In addition, due to the elastic supporting effect of the spring, it is ensured that the supporting shell is tightly attached to the fuel tank shell, better attaching performance and buffering performance are provided, impact of external force is effectively relieved, the safety of the fuel tank is further improved, and the service life of the fuel tank is further prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel tank technical field especially relates to a kind of low-permeability plastic fuel tank assembly. BACKGROUND

[0002] Fuel tank is the key component for storing and supplying fuel, widely used in automobile, motorcycle, engineering machinery, power generation equipment and other internal combustion engine power system, its main function is to store fuel, and fuel is delivered to engine combustion chamber by fuel pump or gravity fuel supply mode.

[0003] As the publication number CN220302236U discloses a kind of double pump standby type plastic fuel tank, including fuel tank main body, the top of the fuel tank main body is provided with oil pump, one end of the oil pump is fixedly connected with oil discharge pipe, the other end of the oil pump is fixedly connected with oil suction pipe, the other side of the fuel tank main body is provided with oil outlet pipe.

[0004] But in prior art, plastic is mostly made of single organic polymer material, and this kind of material has certain permeability to fuel, fuel permeation not only causes waste, but also pollutes the environment, and increases the risk of fire and other safety risks, long-term fuel penetration also leads to the performance degradation of plastic material, affects its service life, in high temperature environment, penetration phenomenon aggravates, increases fuel evaporation, not only aggravates air pollution, but also causes corrosion to surrounding equipment, in addition, since the impact resistance of plastic material is low, it cracks or even breaks when impacted by external force, further aggravates the risk of fuel leakage. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems of long-term fuel penetration leading to the performance degradation of plastic material, low impact resistance of plastic material, cracking or breaking when impacted by external force in prior art, and provides a kind of low-permeability plastic fuel tank assembly.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a kind of low-permeability plastic fuel tank assembly, including fuel tank shell, the top of the fuel tank shell is fixedly connected with fuel port, the both sides of the fuel tank shell are provided with support mechanism, the inner side of the fuel tank shell is connected with a layer of protective layer, the inner side of the protective layer is connected with ethylene-vinyl alcohol copolymer;

[0007] The support mechanism includes slide rod, the outer surface of the both ends of the slide rod is slidably connected with sliding plate, the bottom of the sliding plate is fixedly connected with support shell, support shell covers the outer surface of the fuel tank shell, the bottom of the support shell is fixedly connected with guide block, the track plate is arranged below the two support shells, the surface of the track plate is provided with sliding groove, and the sliding groove is slidably connected with the guide block.

[0008] Preferably, the ethylene-vinyl alcohol copolymer is connected with a high-density polyethylene base layer on the inside.

[0009] Preferably, the sliding rod is fixedly connected with a limiting plate at both ends, and the outer surface of the sliding rod at both ends is sleeved with a spring.

[0010] Preferably, one end of the spring abuts against the limiting plate, and the other end of the spring abuts against the sliding plate.

[0011] Preferably, the diameter of the sliding plate is smaller than the diameter of the limiting plate.

[0012] Preferably, the track plate is fixedly connected with a mounting plate at the bottom of both ends.

[0013] Preferably, the mounting plate is provided with a mounting hole on the surface.

[0014] Compared with the prior art, the utility model has the advantages and positive effects that:

[0015] 1、The utility model discloses a low-permeation plastic fuel tank assembly, which comprises a fuel tank, a support shell and a high-density polyethylene base layer.

[0016] 2、The utility model discloses a low-permeation plastic fuel tank assembly, which comprises a fuel tank, a support shell and a high-density polyethylene base layer. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole three-dimensional structure schematic diagram of the low-permeation plastic fuel tank assembly.

[0018] Figure 2 It is a split three-dimensional structure schematic diagram of the low-permeation plastic fuel tank assembly.

[0019] Figure 3This is a cross-sectional structural schematic diagram of a low-permeability plastic fuel tank assembly proposed in this utility model;

[0020] Figure 4 This is a cross-sectional three-dimensional structural diagram of a low-permeability plastic fuel tank assembly proposed in this utility model.

[0021] Legend: 1. Fuel tank outer shell; 2. Fuel inlet; 3. Support mechanism; 31. Slide bar; 32. Limiting plate; 33. Spring; 34. Support shell; 35. Sliding plate; 36. Guide block; 37. Track plate; 38. Mounting plate; 39. Slide groove; 4. Protective layer; 5. Ethylene-vinyl alcohol copolymer; 6. High-density polyethylene base layer. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: As Figure 1 - Figure 4 As shown, this utility model provides a low-permeability plastic fuel tank assembly, including a fuel tank shell 1, a fuel inlet 2 fixedly connected to one side of the top of the fuel tank shell 1, support mechanisms 3 provided on both sides of the fuel tank shell 1, a protective layer 4 compositely connected to the inner side of the fuel tank shell 1, and an ethylene-vinyl alcohol copolymer 5 compositely connected to the inner side of the protective layer 4.

[0025] The support mechanism 3 includes a slide rod 31, with slide plates 35 slidably connected to the outer surfaces of both ends of the slide rod 31. A support shell 34 is fixedly connected to the bottom of the slide plate 35. The support shell 34 covers the outer surface of the fuel tank shell 1. A guide block 36 is fixedly connected to the bottom of the support shell 34. A track plate 37 is provided below the two support shells 34. A groove 39 is opened on the surface of the track plate 37. The groove 39 is slidably connected to the guide block 36.

[0026] The specific settings and effects of the embodiment will be described below. The ethylene-vinyl alcohol copolymer 5 has low permeability and can effectively prevent fuel from permeating, thereby improving the sealing performance of the fuel tank, reducing fuel loss, and ensuring the safety of fuel storage. In addition, the protective layer 4 can further improve the anti-permeability effect and provide additional protection to prevent external environmental damage to the fuel tank structure. In particular, it can effectively prevent the high-density polyethylene base layer 6 from being damaged or other physical damage, thereby enhancing the overall durability and safety of the fuel tank.

[0027] The design of the two support shells 34 can provide stable protection for the fuel tank shell 1, especially during transportation or use, which can effectively prevent the corner part of the fuel tank shell 1 from being damaged due to impact or friction, thereby improving the service life of the fuel tank. The structural design of the support shell 34 takes into account the overall stability of the fuel tank, so that it can evenly distribute the stress when subjected to external pressure, thereby reducing the risk of damage caused by local stress concentration.

[0028] In addition, the elastic effect of the spring 33 can provide continuous support force to push the sliding plate 35 to move accordingly, so that the sliding plate 35 can drive the support shell 34 to move together after being stressed, ensuring that the support shell 34 can tightly adhere to the outer surface of the fuel tank shell 1. This structural design not only effectively enhances the adhesion of the support shell 34 and improves the protection effect of the fuel tank, but also provides a certain buffer when the fuel tank deforms or is vibrated, thereby reducing the impact force and reducing the possibility of damage to the fuel tank due to external pressure or impact, further improving the reliability and safety performance of the fuel tank.

[0029] Embodiment Two: As shown in Figure 2 and Figure 4 , the ethylene-vinyl alcohol copolymer 5 is connected with a high-density polyethylene base layer 6 on the inside. The slide rod 31 is fixedly connected with a limiting plate 32 at both ends, and the outer surface of both ends of the slide rod 31 is sleeved with a spring 33. One end of the spring 33 abuts against the limiting plate 32, and the other end of the spring 33 abuts against the sliding plate 35. The diameter of the sliding plate 35 is smaller than the diameter of the limiting plate 32. The track plate 37 is fixedly connected with a mounting plate 38 at both ends. The mounting plate 38 is provided with a mounting hole.

[0030] The effect achieved by the whole embodiment is that the existence of the limiting plate 32 can ensure that the elastic effect of the spring 33 is effectively transmitted, so that the sliding plate 35 and the supporting shell 34 move synchronously, thereby ensuring that the supporting shell 34 remains stable during movement. When the supporting shell 34 moves, it will drive the guide block 36 to slide along the set track. At this time, the guide block 36 is limited to slide inside the sliding groove 39, ensuring that the supporting shell 34 can move in a straight line, avoiding affecting the fitting effect with the fuel tank shell 1 due to deviation or inclination. Through this precisely controlled movement mode, it can be ensured that the supporting shell 34 closely fits when it contacts the fuel tank shell 1, without tilting, thereby improving the protection effect of the supporting shell 34 on the fuel tank shell 1 and improving the reliability and stability of the overall structure.

[0031] In addition, the two ends of the track plate 37 are provided with mounting plates 38, the surfaces of which are processed with mounting holes, which can conveniently realize the fixation of the track plate 37 and enhance the stability of the overall structure. The sliding groove 39 not only provides a running channel for the guide block 36, but also effectively limits the movement range of the guide block 36, preventing it from deviating, thereby further ensuring the stable sliding of the supporting shell 34, so that it remains reliable during supporting and protecting the fuel tank shell 1. The overall structure design ensures that when the fuel tank shell 1 is subjected to external force impact or vibration, the supporting shell 34 can still stably fit and provide continuous protection, thereby prolonging the service life of the fuel tank and improving the safety and stability of the equipment operation.

[0032] The use method and working principle of the device are as follows: the ethylene-vinyl alcohol copolymer 5 has low permeability and can play a barrier role to prevent fuel penetration. The protective layer 4 not only can further enhance the anti-permeation effect, but also can play a protection role to prevent the high-density polyethylene base layer 6 from breaking.

[0033] The two supporting shells 34 can protect the fuel tank shell 1 to prevent damage at the corner. The spring 33 is used to elastically push the sliding plate 35 to move, and the sliding plate 35 will drive the supporting shell 34 to move together, so that the supporting shell 34 can closely adhere to the outer surface of the fuel tank shell 1, thereby improving the protection effect.

[0034] The existence of the limiting plate 32 can ensure that the spring 33 elastically pushes the sliding plate 35 and the supporting shell 34 to move together. When the supporting shell 34 moves, it will drive the guide block 36 to slide, and the guide block 36 slides in the sliding groove 39, ensuring that the supporting shell 34 moves in a straight line, so that it will not tilt when it fits with the fuel tank shell 1, thereby ensuring the protection effect of the supporting shell 34.

[0035] The mounting holes on the surfaces of the mounting plates 38 at the two ends of the track plate 37 facilitate the fixation of the track plate 37. The sliding groove 39 has a limiting effect on the guide block 36, which can ensure the stability of the supporting and protection of the supporting shell 34 on the fuel tank shell 1.

[0036] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can make changes or modifications to the above disclosed technical contents to obtain equivalent embodiments, which can be applied to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A low-permeability plastic fuel tank assembly, comprising a fuel tank shell (1), one side of the top of the fuel tank shell (1) is fixedly connected with a fuel port (2), characterized in that: The fuel tank shell (1) is provided with a support mechanism (3) on both sides, a protective layer (4) is connected to the inner side of the fuel tank shell (1), and an ethylene-vinyl alcohol copolymer (5) is connected to the inner side of the protective layer (4); The support mechanism (3) comprises a sliding rod (31), sliding plates (35) are slidably connected to the outer surfaces of both ends of the sliding rod (31), support shells (34) are fixedly connected to the bottom ends of the sliding plates (35), the support shells (34) cover the outer surfaces of the fuel tank shells (1), guide blocks (36) are fixedly connected to the bottoms of the support shells (34), track plates (37) are arranged below the two support shells (34), and sliding grooves (39) are formed in the surfaces of the track plates (37).

2. A low permeation plastic fuel tank assembly as defined in claim 1 wherein: The inner side of the ethylene-vinyl alcohol copolymer (5) is connected with a high-density polyethylene base layer (6).

3. A low permeation plastic fuel tank assembly as defined in claim 1 wherein: The sliding rod (31) is fixedly connected with a limiting plate (32) at both ends, and springs (33) are sleeved on the outer surfaces of both ends of the sliding rod (31).

4. A low permeation plastic fuel tank assembly as defined in claim 3 wherein: One end of the spring (33) abuts against the limiting plate (32), and the other end of the spring (33) abuts against the sliding plate (35).

5. A low permeation plastic fuel tank assembly as defined in claim 1 wherein: The diameter of the sliding plate (35) is smaller than the diameter of the limiting plate (32).

6. A low permeation plastic fuel tank assembly as defined in claim 1 wherein: The bottoms of both ends of the track plate (37) are fixedly connected with mounting plates (38).

7. A low permeation plastic fuel tank assembly as defined in claim 6 wherein: Mounting holes are formed in the surface of the mounting plate (38).

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