Multilayer plug-in blow-molded plastic fuel tank

Abstract

The utility model discloses a multi-layer plug-in blow molding plastic fuel tank, which relates to the technical field of fuel tanks and comprises a multi-layer composite tank body, one side of the multi-layer composite tank body is fixedly communicated with an oil inlet, and the multi-layer composite tank body comprises an outer protective base material layer, a composite barrier layer and an antistatic protective layer. The outer protective base material layer is arranged on the outer side of the composite barrier layer, and the antistatic protective layer is arranged on the inner side of the composite barrier layer. In the utility model, the outer protective base material layer, the composite barrier layer and the antistatic protective layer in the multi-layer composite tank body are synchronously extruded through a blow molding process and are fused, spliced and combined, so that the multi-layer spliced blow molding plastic fuel tank has high strength, permeation barrier property, high temperature resistance and insulativity under the mutual matching of the layers; materials of the main body are mostly plastic, self-weight of the fuel tank is reduced, weight of a vehicle body is reduced, and fuel consumption of the whole vehicle is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel tank technical field especially relates to a multilayer plug -in blow moulded plastic fuel tank. BACKGROUND

[0002] Fuel tank as the key container of storing fuel, is widely used in various fuel power equipment, such as car, aircraft, ship etc. It is usually made of metal or high-strength plastic, has good sealing and corrosion resistance, to ensure that fuel does not leak, at the same time can adapt to different working environment and temperature change.

[0003] Such as Chinese patent publication No. CN217206689U discloses a fuel tank, which comprises a tank body, an installation port is arranged on the tank body, and an integrated piece is detachably connected to the installation port; a fuel supply assembly and a detection assembly are formed on the integrated piece; the fuel supply assembly comprises a fuel supply pipe, an oil return pipe and a breather pipe extending into a containing cavity; the end of the oil return pipe extending into the containing cavity is provided with a filter piece; the detection assembly comprises a liquid level sensor for detecting the containing cavity; the integrated piece is connected to a display piece; the display piece is connected to the liquid level sensor and is used for displaying the liquid level in the containing cavity; a single installation port is arranged on the tank body of the fuel tank, and the fuel supply pipeline and the detection assembly are integrated into one integrated piece.

[0004] Traditional metal fuel tank exposes obvious disadvantages in application. The density of metal material itself is relatively large, so that the overall weight of the fuel tank is relatively heavy, and the increase of the weight of the vehicle body can significantly increase the inertia of the vehicle during driving, so that the engine needs to output more power to overcome the resistance, and the consumption of fuel is aggravated. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems of the existing metal fuel tank in the prior art, which has a large weight, increases the weight of the vehicle body and increases the fuel consumption of the whole vehicle, and provides a multilayer plug-in blow moulded plastic fuel tank.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multilayer plug-in blow moulded plastic fuel tank, comprising a multilayer composite tank body, a fuel inlet is fixedly connected to one side of the multilayer composite tank body, the multilayer composite tank body comprises an outer protective base material layer, a composite barrier layer and an antistatic protective layer, the outer protective base material layer is arranged on the outer side of the composite barrier layer, and the antistatic protective layer is arranged on the inner side of the composite barrier layer.

[0007] Preferably, the composite barrier layer comprises a permeation barrier layer and a high-temperature-resistant layer, and the high-temperature-resistant layer is arranged on one side of the antistatic protective layer.

[0008] Preferably, the two sides of the multilayer composite tank body are respectively provided with side mounting frames, and a plurality of mounting positioning holes are formed in the middle part of the side mounting frame.

[0009] Preferably, the both sides of the multi-layer composite tank are fixedly connected with positioning mounting racks, the inside of the mounting positioning holes is threadedly connected with positioning bolts, and one end of the positioning bolts is threadedly connected in the inside of the positioning mounting rack.

[0010] Preferably, the both ends of the side mounting rack are respectively provided with mounting through grooves.

[0011] Preferably, the other side of the multi-layer composite tank is fixedly connected with an impact-resistant protective plate.

[0012] Compared with the prior art, the multi-layer plug-in blow molding plastic fuel tank has the advantages and positive effects that:

[0013] 1. In the utility model, the outer protective base material layer, the composite barrier layer and the anti-static protective layer in the multi-layer composite tank are synchronously extruded and melt-inserted and combined through a blow molding process, so that the multi-layer plug-in blow molding plastic fuel tank has high strength, permeation barrier property, high temperature resistance and insulation property under the cooperation of the above layers, and most of the main materials are plastic, which reduces the self-weight of the fuel tank, reduces the weight of the vehicle body and reduces the fuel consumption of the whole vehicle.

[0014] 2. In the utility model, the two side mounting racks are placed on one side of the positioning mounting rack, the positioning bolt is rotated, one end of the positioning bolt is threadedly connected in the inside of the positioning mounting rack through the mounting through groove, other connecting pieces pass through the mounting through groove, the side mounting rack and the multi-layer composite tank are mounted in the inside of the vehicle frame, so that the multi-layer plug-in blow molding plastic fuel tank is stably supported, and the fuel tank is prevented from shaking during the operation of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 1 is a first perspective structural schematic view of the multi-layer plug-in blow molding plastic fuel tank;

[0016] Figure 2 Fig. 2 is a second perspective structural schematic view of the multi-layer plug-in blow molding plastic fuel tank;

[0017] Figure 3 Fig. 3 is a sectional view of the multi-layer composite tank in the multi-layer plug-in blow molding plastic fuel tank;

[0018] Figure 4 Fig. 4 is a connection relationship schematic view between the side mounting rack and the positioning mounting rack in the multi-layer plug-in blow molding plastic fuel tank.

[0019] Legend: 1, multi-layer composite box; 11, outer protective substrate layer; 12, composite barrier layer; 121, permeation barrier layer; 122, high-temperature-resistant layer; 13, antistatic protective layer; 2, oil inlet; 3, side mounting bracket; 31, mounting positioning hole; 32, positioning bolt; 33, mounting slot; 4, positioning mounting bracket; 5, impact-resistant protective plate. DETAILED DESCRIPTION

[0020] In order to enable the above-mentioned purposes, features and advantages of the present application to be more clearly understood, the present application will be further described below with reference to the drawings and examples. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced in other ways different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed in the following description.

[0022] Example one: as shown in the present application provides a kind of multi-layer plug-in blow molding plastic fuel tank, including multi-layer composite box 1, the side of multi-layer composite box 1 is fixedly connected with oil inlet 2, multi-layer composite box 1 includes outer protective substrate layer 11, composite barrier layer 12 and antistatic protective layer 13, outer protective substrate layer 11 is arranged at the outer side of composite barrier layer 12, antistatic protective layer 13 is arranged at the inner side of composite barrier layer 12, composite barrier layer 12 includes permeation barrier layer 121 and high-temperature-resistant layer 122, high-temperature-resistant layer 122 is arranged at the side of antistatic protective layer 13. Figure 1 Figure 3 The specific settings and effects of the present embodiment will be described below, the outer protective substrate layer 11, the composite barrier layer 12 and the antistatic protective layer 13 in the multi-layer composite box 1 are synchronously extruded and fused by the blow molding process, wherein the outer protective substrate layer 11 is made of high-density polyethylene, which has good tensile strength and impact resistance, ensuring the structural integrity of the fuel tank under vehicle vibration, collision and internal fuel pressure; the permeation barrier layer 121 in the composite barrier layer 12 is made of ethylene-vinyl alcohol copolymer, which can effectively isolate the permeation of hydrocarbon organic matter; the high-temperature-resistant layer 122 makes the composite barrier layer 12 have good high-temperature resistance; the antistatic protective layer 13 is made of graphene and polyethylene, which has good antistatic protection effect and prevents static accumulation when fuel flows, and the multi-layer plug-in blow molding plastic fuel tank has high strength, permeation barrier property, high-temperature resistance and insulation property under the cooperation of the above layers, and the main material is mostly plastic, which reduces the self-weight of the fuel tank and reduces the weight of the vehicle body, thereby reducing the fuel consumption of the whole vehicle.

[0023]

[0024] Example two: as shown in the present application provides a kind of multi-layer plug-in blow molding plastic fuel tank, including multi-layer composite box 1, the side of multi-layer composite box 1 is fixedly connected with oil inlet 2, multi-layer composite box 1 includes outer protective substrate layer 11, composite barrier layer 12 and antistatic protective layer 13, outer protective substrate layer 11 is arranged at the outer side of composite barrier layer 12, antistatic protective layer 13 is arranged at the inner side of composite barrier layer 12, composite barrier layer 12 includes permeation barrier layer 121 and high-temperature-resistant layer 122, high-temperature-resistant layer 122 is arranged at the side of antistatic protective layer 13.​​Figure 1 Figure 4 As shown in the utility model, the multilayer plug-in blow molding plastic fuel tank comprises a multilayer composite tank body 1, an oil inlet 2 is fixedly connected to one side of the multilayer composite tank body 1, the multilayer composite tank body 1 comprises an outer protective base material layer 11, a composite barrier layer 12 and an antistatic protective layer 13, the outer protective base material layer 11 is arranged on the outer side of the composite barrier layer 12, the antistatic protective layer 13 is arranged on the inner side of the composite barrier layer 12, side edge mounting racks 3 are arranged on the two sides of the multilayer composite tank body 1 respectively, a plurality of mounting positioning holes 31 are formed in the middle part of each side edge mounting rack 3, positioning mounting racks 4 are fixedly connected to the two sides of the multilayer composite tank body 1, positioning bolts 32 are threadedly connected to the interiors of the plurality of mounting positioning holes 31 respectively, one end of each positioning bolt 32 is threadedly connected to the interior of a corresponding positioning mounting rack 4, mounting through grooves 33 are formed in the two ends of each side edge mounting rack 3, and impact-resistant protective plates 5 are fixedly connected to the other sides of the multilayer composite tank body 1.

[0025] When the multilayer plug-in blow molding plastic fuel tank is installed in the interior of a vehicle frame, the two side edge mounting racks 3 are placed on one side of the positioning mounting racks 4 first, the positioning bolts 32 are rotated to threadedly connect one ends thereof to the interiors of the positioning mounting racks 4 through the mounting through grooves 33, and the side edge mounting racks 3 and the multilayer composite tank body 1 are installed in the interior of the vehicle frame through other connecting members, so that the multilayer plug-in blow molding plastic fuel tank is stably supported and the fuel tank is prevented from shaking during the operation of the vehicle; and the impact-resistant protective plates 5 fixedly installed on the other sides of the multilayer composite tank body 1 can protect the multilayer composite tank body 1, when the vehicle runs on a road full of gravel, the gravel on the road can splash due to factors such as wheel crushing and air flow disturbance during the running of the vehicle, and the vehicle bottom components can be impacted. In this case, the impact-resistant protective plates 5 can effectively resist the impact of the gravel and prevent the surface of the multilayer composite tank body 1 from being damaged.

[0026] The use method and working principle of the device are as follows: the outer protective base material layer 11, the composite barrier layer 12 and the antistatic protective layer 13 in the multilayer composite tank body 1 are synchronously extruded and fused and plugged, wherein the outer protective base material layer 11 is made of high-density polyethylene and has good tensile strength and impact resistance, so as to ensure the structural integrity of the fuel tank under the vibration, collision and internal fuel pressure of the vehicle; the permeation barrier layer 121 in the composite barrier layer 12 is made of ethylene-vinyl alcohol copolymer and can effectively isolate the permeation of hydrocarbon organic matter; the high-temperature resistant layer 122 enables the composite barrier layer 12 to have good high-temperature resistance; the antistatic protective layer 13 is made of graphene and polyethylene and has good antistatic protection effect, so as to prevent the accumulation of static electricity when the fuel flows, and the main material is mostly plastic, so as to reduce the self-weight of the fuel tank and reduce the weight of the vehicle body.

[0027] ​When the multilayer plug-in blow-molded plastic fuel tank is installed in the interior of the frame, the two side mounting frames 3 are placed on one side of the positioning mounting frame 4, the positioning bolt 32 is rotated to have one end thereof screwed in the interior of the positioning mounting frame 4 through the mounting through slot 33, and the side mounting frame 3 and the multilayer composite tank body 1 are installed in the interior of the frame through other connecting members, so that the multilayer plug-in blow-molded plastic fuel tank is stably supported.

[0028] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields. However, 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 multi-layer splicing blow molded plastic fuel tank characterized by: The utility model relates to a multi-layer composite box (1), one side of the multi-layer composite box (1) is fixedly connected with an oil inlet (2), the multi-layer composite box (1) comprises an outer protective substrate layer (11), a composite barrier layer (12) and an antistatic protective layer (13), the outer protective substrate layer (11) is arranged on the outer side of the composite barrier layer (12), and the antistatic protective layer (13) is arranged on the inner side of the composite barrier layer (12).

2. A multi-layer splicing blow molded plastic fuel tank according to claim 1, characterized in that: The composite barrier layer (12) comprises a permeation barrier layer (121) and a high-temperature-resistant layer (122), and the high-temperature-resistant layer (122) is arranged on one side of the antistatic protective layer (13).

3. A multi-layer splicing blow molded plastic fuel tank according to claim 1, characterized in that: Both sides of the multi-layer composite box (1) are respectively provided with side mounting racks (3), and the middle part of each side mounting rack (3) is provided with a plurality of mounting positioning holes (31).

4. A multi-layer splicing blow molded plastic fuel tank according to claim 3, characterized in that: Both sides of the multi-layer composite box (1) are fixedly connected with positioning mounting racks (4), and the inside of each mounting positioning hole (31) is threadedly connected with a positioning bolt (32), and one end of the positioning bolt (32) is threadedly connected in the inside of the positioning mounting rack (4).

5. A multi-layer splicing blow molded plastic fuel tank according to claim 3, characterized in that: Both ends of the side mounting rack (3) are respectively provided with mounting through grooves (33).

6. A multi-layer splicing blow molded plastic fuel tank according to claim 1, characterized in that: The other side of the multi-layer composite box (1) is fixedly connected with an impact-resistant protective plate (5).

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