Fuel tank

Abstract

The utility model relates to a fuel tank which comprises a tank body, liquid fuel and a wick, the lower end of the wick is immersed in the liquid fuel, a top cover is arranged on the top of the tank body and comprises an easy-to-pull cover and a sealing cover, the easy-to-pull cover is composed of an outer ring and an easy-to-tear piece, the outer ring is connected with an upper opening of the tank body in a sealing mode, and the sealing cover is buckled at the top end of the outer ring in a pressing mode. A tray is arranged on the upper portion of the tank body, the periphery of the tray is connected with the inner wall of the tank body in a sealed mode, at least one fixing nozzle is arranged in the middle of the tray and used for fixing the upper end of a wick, an air hole and a backflow hole are further formed in the tray, the air hole is provided with a protruding lip facing the upper surface of the tray, and the backflow hole is provided with a protruding lip facing the lower surface of the tray. After being opened, the bottle cap can be sealed and closed again to support repeated use; the tray isolates flames from internal fuel, so that the flames are uniform and durable; the air hole automatically adjusts the pressure in the tank, and explosion caused by overheating of the interior of the fuel cavity during combustion is avoided; and the liquid fuel leaking out of the tray can flow back into the tank through the backflow hole.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel appliances, and particularly relates to a fuel tank. Background Art

[0002] When people go camping or dine, they need open fire to cook food. In restaurants, there are some chafing dishes, and after serving, open fire is also used for secondary heating or heat preservation. In the prior art, solid alcohol is commonly used, which is directly ignited in a small metal can and the open fire is placed at the bottom of the utensil. Since the utensil is open, the alcohol is easy to volatilize and the fuel needs to be replenished frequently. The prior art also provides a liquid fuel tank with better sealing and safer fuel, such as the utility model patent CN2591422Y of China, with the patent number ZL02292646.1. The fuel is encapsulated in the tank body, and there is an opening in the center of the upper cover, which is communicated with the inner cavity of the tank body. The wick is installed in the burner, and a small section of the upper end of the wick extends out. A protective cover made of plastic material is covered on the burner. After removing the protective cover, it can be ignited for use, and the protective cover is used to prevent internal fuel leakage or volatilization.

[0003] Defects of the above scheme: 1) The protective cover and the structure for fixing the upper end of the wick are relatively large and are prone to being knocked; 2) The strength of the protective cover is insufficient and it is easy to be damaged during long-term storage and transportation; 3) Once internal fuel leakage occurs, the fuel cannot be recovered, wasting raw materials and increasing the safety risk. Summary of the Utility Model

[0004] The utility model aims to solve the above technical problems, and thus provides a fuel tank with good sealing effect, not easy to be damaged, and capable of recovering the leaked fuel.

[0005] The technical solution adopted by the utility model to solve the above problems is as follows:

[0006] A fuel tank includes a tank body, in which a liquid fuel and a wick with the lower end immersed in the liquid fuel are installed. A top cover is provided at the top of the tank body. The top cover includes a pull-tab lid and a sealing cover. The pull-tab lid consists of an outer ring and a tearable piece. The outer ring is hermetically connected to the upper opening of the tank body, and the sealing cover is snap-fastened to the top of the outer ring; a tray is provided at the upper part of the tank body. The periphery of the tray is hermetically connected to the inner wall of the tank body. At least one fixing nozzle is provided in the middle of the tray, and the fixing nozzle is used to fix the upper end of the wick. An air hole and a reflux hole are also provided on the tray. The air hole is provided with a convex lip facing the upper surface of the tray, and the reflux hole is provided with a convex lip facing the lower surface of the tray.

[0007] The utility model adopting the above structure, compared with the prior art, has the following beneficial effects:

[0008] 1) The utility model adopts double - cover protection. After opening a new can, it can be sealed again and supports multiple uses; 2) The tray is used to fix the wick. The tray is arranged inside the tank body, and the fixing nozzle has a small volume, so that the outer surface of the tank body is cylindrical, which is easy to be packed and transported; 3) The opening of the fixing nozzle is small and wraps the wick, reducing the volatilization of materials and making the flame uniform and lasting; 4) The air hole automatically adjusts the pressure in the fuel chamber, avoiding explosion due to overheating inside the fuel chamber during combustion; 5) The reflux hole can make the leaked liquid fuel flow back into the tank, reducing pollution and waste of raw materials.

[0009] As a preference, a further technical solution of the above - mentioned structure is:

[0010] An annular supporting platform is provided on the inner wall of the tank body. Along the outer circumference of the annular supporting platform and on its upper side, an annular groove is also provided on the inner wall of the tank body; the outer edge of the tray is placed on the top surface of the annular supporting platform, and the outer circumference of the tray is tightly abutted in the annular groove.

[0011] The beneficial effects obtained from the above characteristics: This structure is convenient for installing the tray, has good sealing performance, is not easy to fall off, and stably supports the upper end of the wick.

[0012] The tray is an arc - shaped plate with a middle depression.

[0013] The beneficial effects obtained from the above characteristics: This example facilitates the rapid reflux of the liquid fuel overflowing to the outside of the tray back into the tank.

[0014] The fixing nozzle includes a through - hole arranged on the tray. Three or four clip pieces are fixedly connected to the circumference of the through - hole. The clip pieces are fan - shaped, the central angle of the fan - shape is set upward, the middle of the arc - shaped edge is connected to the peripheral wall of the through - hole, and fracture openings separated from the tray are provided at both ends.

[0015] The beneficial effects obtained from the above characteristics: The fixing nozzle is formed by deforming the plate surface of the tray itself, which is simple to manufacture, low in cost, convenient for adjusting the clamping force according to the thickness of the wick, and has good fixing stability for the wick.

[0016] The upper end of the tank body is attached to the lower end of the outer ring and is fixed by synchronous rolling pressure.

[0017] The beneficial effects obtained from the above characteristics: This structure has a firm connection at the top of the tank and good sealing performance.

[0018] The sealing cover is a plastic cover body, and a groove is provided on the periphery, and the groove is engaged and fixed with the outer ring.

[0019] The beneficial effects obtained from the above characteristics: The top cover of this example can still seal the tank body and prevent leakage of materials without an easy - pull cover. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the fuel tank of the utility model;

[0021] Figure 2 It is a schematic diagram of the fixed nozzle structure of the present utility model;

[0022] Figure 3 It is a perspective view of the internal structure of the tank body of the present utility model;

[0023] Figure 4 It is a schematic diagram of the assembly structure of the tray and the tank body of the present utility model;

[0024] Figure 5 It is a schematic diagram of the connection structure at the top of the tank body of the present utility model.

[0025] In the figure: 1. Top cover; 101. Top cover; 102. Easy-open lid; 1021. Outer ring; 1022. Tear strip; 2. Tray; 3. Tank body; 301. Annular support platform; 302. Annular groove; 4. Fixed nozzle; 401. Through hole; 402. Clip; 403. Fracture opening; 5. Air hole; 6. Return hole; 7. Wick. Specific embodiments

[0026] The following further illustrates the present utility model in conjunction with embodiments, and the purpose is only to better understand the content of the present utility model. Therefore, the examples given do not limit the protection scope of the present utility model.

[0027] See Figures 1 to 5 As shown, the fuel tank provided by the present utility model includes a tank body 3. The tank body 3 contains liquid fuel and a wick 7. The lower end of the wick 7 is immersed in the liquid fuel. A top cover 1 is provided at the top of the tank body 3. The top cover 1 includes an easy-open lid 102 and a sealing cover 101. The easy-open lid 102 is composed of an outer ring 1021 and a tear strip 1022. The outer ring 1021 is hermetically connected to the upper opening of the tank body 3, and the sealing cover is snap-fastened to the top end of the outer ring 1021; A tray 2 is provided in the upper part of the tank body 3. The periphery of the tray 2 is hermetically connected to the inner wall of the tank body 3. At least one fixed nozzle 4 is provided in the middle of the tray 2. The fixed nozzle 4 is used to fix the upper end of the wick 7. An air hole 5 and a return hole 6 are also provided on the tray 2. The air hole 5 is provided with a convex lip facing the upper surface of the tray 2, and the return hole 6 is provided with a convex lip facing the lower surface of the tray 2.

[0028] The wick 7 is made of a fiber wick 7 or a cotton wick 7. Generally, three fixed nozzles 4 are sufficient. One fixed nozzle 4 is used to fix one wick 7.

[0029] As an option, the installation structure of the tray 2: An annular support platform 301 is provided on the inner wall of the tank body 3. Along the outer circumference of the annular support platform 301 and on the upper side of the annular support platform 301, an annular groove 302 is also provided on the inner wall of the tank body 3; The outer edge of the tray 2 is placed on the annular support platform 301, and the outer circumference of the tray 2 is tightly abutted in the annular groove 302. See Figure 1 Or Figure 3, the tank body preferably adopts a side wall with a slightly inclined cross-section. The tray 2 is horizontally placed into the tank body 3 from the top. When the tray 2 is pushed downward with increased pressure, it falls onto the top surface of the annular support 301. At the same time, by utilizing the diameter difference between the tray and the tank body at this position, the tray tightly fits into the annular groove 302. The shoulder of the tray 2 lands on the annular groove 302, and the outer edge is stuck inside the annular groove 302. In this embodiment, the height of the annular groove 302 matches the thickness of the outer edge of the tray 2, so that the combination of the two is tightly abutted, thereby forming a sealed fit with the inner wall of the tank body 3 to ensure that no fuel leaks from the edge of the tray 2.

[0030] The design of the fixed nozzle 4 provided by the present utility model: The fixed nozzle 4 includes a through hole 401 provided on the tray 2. Three or four clip pieces 402 are fixedly connected to the circumference of the through hole 401. The clip pieces 402 are fan-shaped, and the central angle of the fan is upward. The middle of the arc edge is connected to the peripheral wall of the through hole 401, and fracture openings 403 separated from the tray 2 are provided at both ends. The fixed nozzle 4 is formed by stamping. By deforming the original plate material of the tray, no other components need to be prepared. Only the corresponding cracks need to be stamped on the plate surface of the original tray, and then the angle plate is folded upward to form. A part of the fracture opening 403 is cut at the bottom of each piece to facilitate the standing of the clip piece 402. When the clip piece 402 is bent outward, the fixed nozzle 4 can be enlarged to fix a thicker wick 7. When the clip piece 402 is squeezed towards the middle, the fixed nozzle 4 can be reduced to fix a thinner wick 7. It is extremely convenient to use and adjust.

[0031] The air holes 5 are made by punching the tray 2 from bottom to top, and the return holes 6 are made by punching the tray from top to bottom. A plurality of air holes 5 and return holes 6 are evenly arranged around the center of the tray 2 and can be arranged in a staggered distribution.

[0032] Both the air holes 5 and the return holes 6 are through holes, and actually both can allow gas and liquid fuel to pass through. Their difference is reflected in that when the liquid fuel level leaking to the upper side of the tray 2 is below the convex lip of the air hole, it can only flow back through the return hole 6, while the air hole 5 can keep the internal through hole, avoiding the situation that all through holes are blocked by liquid to form a vacuum cavity, thus preventing the liquid fuel from flowing back.

[0033] The function of the present utility model that allows the raw material to flow back shows obvious advantages especially during transportation. Specifically, during transportation, it is inevitable to have bumps and shakes, and the tank body 3 is prone to tipping over. The internal liquid fuel will leak into the chamber between the tray 2 and the easy-open lid 102. Through the design of the present utility model, after the tank body 3 is placed upright, after waiting for a certain period of time, the fuel can slowly leak back into the fuel chamber in the tank. In this way, when the easy-open lid 102 is opened for use, the surface of the tray 2 is still clean.

[0034] Optionally, the tray 2 is designed as an arc-shaped plate with a middle depression. When there is leaked fuel on the surface of the tray 2, it can quickly converge to the middle through the arc slope and leak back into the tank through the air holes 5 and the wick 7.

[0035] The upper end of the tank body 3 is attached to the lower end of the outer ring 1021 and formed by rolling and pressing to achieve the fixing purpose. In this example, the upper and lower components are jointly curled and connected, without the need for bonding, and can be quickly manufactured in one go on the machine. Moreover, the connection is stable after rolling and pressing, and the sealing performance is also good. The utility model is made of iron or aluminum.

[0036] Optionally, the cover is a plastic cover body, and a groove is provided on the periphery. The groove is engaged and fixed with the outer ring 1021. After the easy-open lid 102 has been torn open, the cover can still seal the tank body 3 to prevent leakage of materials and volatilization.

[0037] The beneficial effects of the utility model are as follows:

[0038] 1) The utility model adopts a double-cover protection structure, which can be sealed again after opening a new can and supports multiple uses; 2) The tray is arranged inside the tank body, making the appearance of the tank body cylindrical, thus facilitating packing and transportation; 3) The fixed nozzle is small, reducing material volatilization and making the flame uniform and lasting; 4) The air hole automatically adjusts the pressure inside the tank to prevent the fuel chamber from overheating and exploding during combustion; 5) The return hole enables the leaked liquid fuel to flow back into the tank, reducing pollution and waste of raw materials; 6) The arc-shaped diversion shape designed to accelerate the convergence of the liquid enables the fuel leaked outside the tray to flow back more quickly; 7) The connection of each component of the utility model does not rely on other materials, is all rigidly connected, and the whole metal tank body is heat-resistant and not easy to age.

[0039] The above are only the preferred and feasible embodiments of the utility model, and do not limit the scope of the rights of the utility model. All equivalent changes made by using the content of the specification and drawings of the utility model are included in the scope of the rights of the utility model.

Claims

1. A fuel tank, comprising a tank body (3) which contains liquid fuel and a wick (7) with its lower end immersed in the liquid fuel, and further provided with a tray (2). At least one fixing nozzle (4) is provided in the middle of the tray (2), and the fixing nozzle (4) is used to fix the upper end of the wick (7); a top cover (1) is provided at the top of the tank body (3), and it is characterized in that: The cross-section of the tank body (3) is a side wall with a slight slope. An annular support platform (301) is provided on the inner wall of the tank body (3). Along the outer circumference of the annular support platform (301) and on the inner wall of the tank body (3) above it, an annular groove (302) is further provided; a tray (2) is also provided. The outer edge of the tray (2) is placed on the top surface of the annular support platform (301), and the outer circumference of the tray (2) is tightly abutted in the annular groove (302). A sealing fit is formed between the peripheral edge of the tray (2) and the inner wall of the tank body (3); The top cover (1) includes a pull-tab lid (102) and a sealing cover (101). The pull-tab lid (102) is composed of an outer ring (1021) and a tearable sheet (1022). The upper end of the tank body (3) is attached to the lower end of the outer ring (1021) and is fixed by synchronous rolling pressure, so as to be hermetically connected; The sealing cover (101) is a plastic cover body. A groove is provided on the peripheral edge of the sealing cover (101). The sealing cover (101) is snap-fastened on the top end of the outer ring (1021), and the groove is engaged and fixed with the outer ring (1021). When the pull-tab lid (102) has been torn off, the sealing cover (101) is used to keep the tank body sealed; The tray (2) is further provided with an air hole (5) and a return hole (6). The air hole (5) is provided with a convex lip facing the upper surface of the tray (2), and the return hole (6) is provided with a convex lip facing the lower surface of the tray (2).

2. The fuel tank according to claim 1, wherein: The tray (2) is an arc-shaped plate with a concave middle.

3. The fuel tank according to claim 2, characterized in that: The fixing nozzle (4) includes a through hole (401) provided on the tray (2). Three or four clip pieces (402) are fixedly connected to the circumference of the through hole (401). The clip pieces (402) are fan-shaped, the central angle of the fan is set upward, the middle of the arc edge is connected to the peripheral wall of the through hole (401), and fracture openings (403) separated from the tray (2) are provided at both ends.

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