Oil tank structure

Abstract

The utility model relates to the field of oil storage and transfer equipment, and discloses an oil tank structure which comprises a tank body, an oil outlet nozzle and a cover body, the tank body comprises a first shell and a second shell which are formed through punching, the first shell is connected with the second shell in a welded mode, and each of the first shell and the second shell comprises a top wall. The top wall comprises a first top wall, a second top wall and a third top wall which descend in a stepped mode, the oil outlet nozzle is welded to the front wall and the rear wall and is perpendicular to the front wall and the rear wall, a handle is fixed between the first top wall and the second top wall, the oil outlet nozzle is welded to the top wall of the first shell or the top wall of the second shell, and a connecting piece connected with the cover body is welded to the oil outlet nozzle. The oil outlet nozzle is welded to the top wall of the first shell or the second shell, traditional welding seams are avoided, the adverse effect of heavy welding seams on the welding quality is eliminated, the connecting strength and the sealing performance are ensured, the leakage risk is reduced, the oil flowing path is optimized during pouring, contact with the inner wall of the box body is reduced, oil residue is reduced, and the emptying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of oil storage and transfer equipment, in particular to an oil tank structure. Background Art

[0002] Currently, oil tanks or oil barrels are a common type of oil storage and transportation container. Their structure usually includes basic components such as a box (barrel) body, a nozzle, a cover and a handle. In the past, in order to ensure the sealing of the oil tank, the box body was mostly formed in one step, the mold was large, the processing raw materials were required to be high, and the processing and manufacturing cost was high.

[0003] At present, the Chinese patent application number: 201310154593.2 discloses an oil barrel formed by stamping and forming a shell with symmetrical plates on both sides, so as to reduce the processing difficulty of the oil barrel. However, since the nozzle of the oil barrel is directly welded to the welding seam of the barrel body, the welding seam of the nozzle and the original welding seam of the barrel body are intertwined, which affects the welding quality. The strength of the interface is weak and may fail when subjected to force, resulting in oil leakage, increasing potential dangers and maintenance costs. At the same time, during transportation, when the center of gravity of the oil tank is too high, it may cause the oil tank to tip over, causing the oil tank to collide, resulting in damage to the oil tank, and even oil leakage. Utility Model Content

[0004] The utility model aims to provide an oil tank structure to improve the welding quality of the oil tank, adjust the center of gravity of the oil tank, and reduce the risk of the oil tank tipping over during transportation.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fuel tank structure, including a tank body, an oil nozzle and a cover body, the tank body includes a first shell body and a second shell body formed by stamping, the first shell body and the second shell body are welded and connected, the first shell body and the second shell body both include a top wall, the top wall includes a first top wall, a second top wall and a third top wall that descend in a step-like manner, the oil nozzle is welded to the front wall and the rear wall and is perpendicular to the front wall and the rear wall, a handle is fixed between the first top wall and the second top wall, the oil nozzle is welded to the top wall of the first shell body or the second shell body, and a connecting piece for connecting the cover body is welded to the oil nozzle.

[0006] The beneficial effects of this solution are as follows: 1. The oil outlet nozzle is welded to the top wall of the first shell or the second shell, and the oil outlet nozzle is arranged on the top wall of the first shell or the second shell, which cleverly avoids the traditional welding seam, eliminates the adverse effects of heavy welding seams on welding quality, ensures the connection strength and sealing, and reduces the risk of leakage; 2. In addition, since the oil outlet nozzle is biased and fixed on the top wall of one side of the oil tank, the oil flow path is optimized when the tank is inverted, reducing contact with the inner wall of the tank, reducing oil residue, improving emptying efficiency, reducing unnecessary losses, and ensuring the cleanliness of the tank. ; 3. The handle design between the top wall facilitates transportation and does not interfere with welding. It takes ergonomics into consideration, makes operation more labor-saving, and makes transportation safe and convenient, reducing the operating burden; 4. The cover is connected to the oil outlet through a connector welded on the oil outlet, which can effectively avoid the contamination and loss that may be caused when the cover is placed directly, maintains the cleanliness of the cover, and improves the overall hygiene standards; 5. Through the stepped descending top wall, the center of gravity of the box is lower than 1 / 2 of the height of the tank after being filled with oil, which improves the stability of the tank and reduces the probability of the tank tipping over during transportation.

[0007] Furthermore, the first shell and the second shell further include a first side wall and a second side wall arranged in parallel, and both the first side wall and the second side wall are provided with reinforcing ribs.

[0008] Beneficial effect: The setting of the reinforcing ribs on the first side wall and the second side wall not only optimizes the force distribution, but also improves the local compressive resistance, effectively resists deformation under the action of external force, avoids the dent or rupture of the side wall, and extends the service life.

[0009] Furthermore, the first shell and the second shell further include a front wall and a rear wall perpendicular to the first side wall, and the first top wall, the first side wall and the second side wall form an air storage chamber.

[0010] Beneficial effects: 1. The first top wall, the first side wall and the second side wall form an air storage chamber, which effectively collects and stores the gas generated by the volatilization of oil, and avoids the direct dissipation and loss of gas; 2. The gas stored in the air chamber makes the internal pressure of the oil tank slightly higher than the external pressure. By utilizing this slightly positive pressure difference, during the process of pouring oil or moving the oil, it can effectively prevent the oil from splashing due to the internal and external pressure difference, reduce spillage, and improve the controllability of pouring; 3. During the pouring process, the gas naturally accumulated in the air chamber can balance the newly generated pressure, reducing the manual operation pressure adjustment each time the oil is poured, thereby improving the smoothness of use, reducing the operating steps, and improving the user experience.

[0011] Furthermore, the handle includes a gripping portion, and the edge of the gripping portion is bent inward to form a smooth arc surface.

[0012] Beneficial effects: The handle is designed with the edge of the grip bent inward to form a smooth arc surface. This design fits the contour of the hand perfectly, provides a comfortable grip when holding naturally, reduces fatigue from long-term grip, and increases convenience of use; the smooth arc surface design on the grip increases the contact area between the palm and the handle, distributes the force more evenly, avoids pain at local pressure points, improves the stability of the grip, and allows easy grasping even if the fuel tank is heavy; when holding, the arc-shaped grip guides the fingers to bend naturally, fits well, and enhances the stability of the operation.

[0013] Furthermore, a notch is provided at the connection between the handle and the top wall to avoid the connection between the first shell and the second shell.

[0014] Beneficial effect: The connection between the handle and the top wall is deliberately arranged next to the notch connecting the first shell and the second shell, cleverly bypassing the original welding seam, avoiding direct connection of the handle on the welding seam, preventing the welding quality from being adversely affected by the original welding seam, and ensuring the stability of the handle connection.

[0015] Furthermore, the cover body comprises a cover assembly, a shell is slidably arranged on the cover assembly, a linking part is fixed on the shell, and a connecting piece is flexibly connected to the linking part.

[0016] Beneficial effects: Through the cooperation of the sliding shell and the cover body, plus the flexible connector, dynamic sealing adjustment and protection are achieved, and the flexibility and sealing of the cover body are optimized.

[0017] Furthermore, it includes a claw, a limit piece and a guide rod. The claw is hinged on the cover body, and a torsion spring is arranged at the hinge. Under the pre-tightening force of the torsion spring, the claw is in a clamping state, the limit piece is fixedly arranged on the guide rod, a sealing part is arranged at the lower end of the guide rod, a sealing ring is fixed at the lower end of the cover body, the guide rod passes through the sealing ring and is threadedly connected with the cover body. When clamped, the sealing part fits with the sealing ring.

[0018] Furthermore, the cover body is provided with a convex column, and a plurality of long grooves and short grooves are axially staggered and equidistantly provided on the convex column, an arc groove is provided between the long grooves and the short grooves, and the starting points of the long grooves and the short grooves are both provided on the arc grooves, and a claw, a limit member and a spring are provided between the cover body and the shell, the claw is hinged on the cover body, the limit member is provided outside the convex column, and a plurality of protrusions are provided on the inner side of the limit member, and the protrusion spacing is the same as the long groove spacing, a guide rod is rotatably provided in the shell, and the limit member is slidably provided in the axial direction of the cover body.

[0019] Beneficial effects: 1. The convex column arranged on the cover body has an arc groove and long and short grooves, which cooperate with the guide rod in the shell to form a precise guiding and locking mechanism, ensuring the stable closure of the cover body and reducing looseness; 2. The convex column arranged on the cover body has an arc groove and long and short groove design, which cooperates with the guide rod in the shell to form a precise guiding and locking mechanism, ensuring the stable closure of the cover body and reducing looseness; 3. The limit piece is sleeved on the outside of the convex column, and its inner side is arranged to cooperate with the protrusion and the long groove, which ensures that the sliding direction and force of the limit piece are uniform, and the smooth sliding during operation improves the smoothness of opening and closing.

[0020] Furthermore, a sealing ring is fixed inside the cover body, a vent hole is provided on the convex column, the vent hole runs through the cover body, a sealing part is fixed on the end of the guide rod away from the shell, the sealing part extends into the vent hole and fits with the sealing ring.

[0021] Beneficial effects: 1. The design of the fixed sealing ring in the cover body fits tightly between the cover body and the shell, effectively blocking the penetration of liquid and the outside world, improving the tightness of the seal, preventing leakage, and protecting the purity of the oil; 2. When the pressure is released, the volatilized oil and gas enter between the shell and the cover body through the exhaust hole, and then escape through the gap between the cover body and the shell. Each time the cover body is opened, the volatilized oil and gas can be used to lubricate and maintain the claws and springs to increase their service life; the exhaust hole and exhaust design control the discharge path of the oil and gas, and the oil and gas escape through the gap between the shell and the cover body to achieve pressure balance and avoid internal pressure accumulation. At the same time, the volatilization of oil and gas enters the shell through the exhaust hole, providing natural lubrication for opening and closing. The volatilization of oil and gas during the opening and closing process not only balances the pressure, but also plays a natural lubrication role for the claws and springs. Each operation is a maintenance, which invisibly increases the service life of the components, reduces wear, and embodies the intelligent maintenance design. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the fuel tank of the utility model;

[0023] Figure 2 This is a front view of the fuel tank of the utility model;

[0024] Figure 3 This is a top view of the fuel tank of the utility model;

[0025] Figure 4 This is a front view of the cover body of Example 2 of the utility model;

[0026] Figure 5 for Figure 4 Section view at AA;

[0027] Figure 6 for Figure 4 Sectional view at BB;

[0028] Figure 7 This is a schematic diagram of the cover body of Embodiment 3 of the present utility model;

[0029] Figure 8 This is a three-dimensional diagram of the cover assembly of Example 3 of the utility model. DETAILED DESCRIPTION

[0030] The following is further described in detail through specific implementation methods:

[0031] The figure marks in the drawings of the specification include: a first shell 11, a second shell 12, a first top wall 101, a second top wall 102, a third top wall 103, a side wall 104, a rear wall 105, a front wall 106, a bottom wall 107, a weld 13, a reinforcing rib 14, a handle 2, a notch 21, a gripping portion 22, an oil nozzle 31, a connecting portion 32, a cover body 41, a connecting column 411, a convex column 412, a long groove 412-1, a short groove 412-2, an arc groove 412-3, a shell 42, a linking portion 421, a limit member 43, a claw 44, a sealing ring 45, a sealing portion 46, and a guide rod 47.

[0032] Example 1

[0033] Embodiment 1 is basically as attached Figure 1-3 As shown, Figure 1-3 The fuel tank structure shown in FIG. 1 includes a tank body, a handle 2, a fuel outlet nozzle 31 and a cover body. Figure 1 As shown, the box body includes a stamped first shell 11 and a second shell 12, a weld 13 is welded between the first shell 11 and the second shell 12, and the first shell 11 and the second shell 12 each include a top wall, a side wall 104, a front wall 106 and a bottom wall 107, as shown in FIG. Figure 2 As shown, the top wall extends from the rear wall 105 to the front wall 106 and descends in a stepped manner, including a first top wall 101, a second top wall 102 and a third top wall 103, so that after being filled with oil, the center of gravity of the oil tank is lower than 1 / 2 of the height of the oil tank, and the side wall 104 is provided with an indentation in the direction of the top wall, and a reinforcing rib 14 is formed by the indentation.

[0034] like Figure 2 , Figure 3 As shown, the handle 2 is formed by cutting and bending a metal plate, and includes a gripping portion 22 and a welding portion. Two incisions are cut on the plate to form three gripping portions 22. The operator can move the oil tank through the middle gripping portion 22, or two people can respectively grip the gripping portions 22 on both sides to lift the oil tank away. The edges of the gripping portions 22 are bent inward to form a smooth arc surface to improve the comfort of gripping and lifting. The welding portions are arranged at both ends of the handle 2, and notches 21 are cut to avoid the weld 13 to avoid affecting the quality of the weld 13 when welding the handle 2.

[0035] The oil nozzle 31 is welded to the top wall of the first shell 11 or the second shell 12. In this embodiment, the oil nozzle 31 is welded to the third top wall 103 of the second shell 12 for example. An external thread is provided at the top of the oil nozzle 31, and a connecting portion 32 is welded to the oil nozzle 31.

[0036] A sealing member is bonded inside the cover body, and the sealing member is made of rubber. An internal thread adapted to the oil outlet nozzle 31 is provided inside the cover body, so that the oil outlet nozzle 31 is sealed and covered by the cover body.

[0037] Example 2

[0038] Example 2 is substantially the same as Example 1, except that Figure 4-Figure 6 As shown, the cover body includes a shell 42, a cover body 41 and a card and mechanism, as shown in FIG. Figure 5 A sealing ring 45 is bonded to the lower end of the cover assembly. Figure 6 As shown, a connecting column 411 is provided on the axis of the cover body 41 , and the shell 42 is welded to the connecting column 411 .

[0039] like Figure 5 As shown, the engaging mechanism includes a claw 44, a limiter 43 and a guide rod 47. The claw 44 is hinged on the cover body 41. The claw 44 is hinged on the cover body 41. A torsion spring is arranged at the hinge. Under the pre-tightening force of the torsion spring, the claw 44 is in an engaged state. The limiter 43 is a disc. The limiter 43 is fixedly arranged on the guide rod 47. A sealing portion 46 is bonded to the lower end of the guide rod. The guide rod 47 is threadedly connected to the cover body 41. The guide rod 47 is screwed into the cover body 41 so that the limiter 43 is pressed against the inner side of the claw 44, thereby releasing the engaged state. When closing, the cover body 41 is closed on the oil outlet nozzle 31. , unscrew the guide rod 47, and when the limit piece 43 is out of contact with the claw 44, the claw 44 rotates inward under the action of the torsion spring, clamps the cover body 41 and the oil outlet nozzle 31 together, and then continues to unscrew the guide rod 47 until the sealing portion 46 is in contact with the sealing ring 45 to complete the sealing work of the oil outlet nozzle 31. When opening, the guide rod 47 is screwed into the cover body 41, the sealing part is disengaged from the sealing ring 45, and the oil and gas in the oil tank overflow through the threaded hole, so that the pressure in the oil tank is reduced, and then continues to unscrew the guide rod 47 until the claw 44 is disengaged from the oil outlet nozzle 31, and the cover body can be separated from the box body.

[0040] Example 3

[0041] Example 3 is substantially the same as Example 1, except that Figure 7-Figure 8As shown, the cover body includes a shell body 42 and a cover body 41, a guide rod 47 is bonded or welded inside the shell body 42, a sealing portion 46 is bolted to the lower end of the guide rod 47, a linking portion 421 is bonded or welded outside the shell body 42, a connecting hole is provided on the linking portion 421, and a connecting rope is provided between the connecting hole and the connecting portion 32, so as to connect the cover body to the oil outlet nozzle 31.

[0042] A sealing ring 45 is bonded to the lower end of the cover body 41, and a convex column 412 is provided in the middle of the cover body 41. Figure 8 As shown, an arc groove 412-3 is arranged on the circumference of the boss 412, and a plurality of long grooves 412-1, short grooves 412-2 and arc grooves 412-3 are arranged axially on the boss, the lower ends of the long grooves 412-1 and the short grooves 412-2 are arranged on the arc groove 412-3 and are connected with the arc groove 412-3, an exhaust hole penetrating the cover body 41 is arranged on the boss, the exhaust hole is coaxial with the boss, and the sealing portion 46 extends into the exhaust hole and fits with the sealing ring 45.

[0043] like Figure 4 As shown, the locking mechanism includes a claw 44, a limit member 43 and a spring. The limit member is slidably arranged outside the convex column. The spring is respectively arranged between the limit member 43 and the shell 42 and between the limit member 43 and the convex column 412. A plurality of protrusions are arranged on the inner side of the limit member. The protrusions are slidably arranged in the long groove 412-1. The limit member is fixedly connected to the guide rod 47.

[0044] When in use, the shell 42 is pressed to move the limit piece 43 downward, and the limit piece 43 presses one end of the claw 44, causing the claw 44 to tilt up, thereby releasing the engagement between the cover and the oil outlet nozzle 31, until the protrusion moves to the arc groove 412-3, and then the shell is rotated to make the protrusion rotate to the bottom of the short groove 412-2, releasing the shell 42, and under the action of the spring, the shell 42 and the limit piece 43 move upward, and the protrusion is stuck above the short groove 412-2, and then the shell is pressed again and rotated in the opposite direction, and the protrusion rotates to the bottom of the long groove 412-1, and the limit piece 43 is disengaged from the claw 44, completing the engagement of the cover.

[0045] At the same time, during use, the shell 42 is pressed so that the sealing part 46 extends into the oil outlet nozzle 31, and the oil and gas in the oil outlet nozzle 31 enter between the shell 42 and the cover body 41 through the exhaust hole to release part of the oil and gas, and the released oil and gas are used to lubricate and maintain the locking mechanism in the cover body 41 to increase the service life of the locking mechanism.

[0046] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that the technical means for solving the problems in the above-mentioned embodiments of the utility model can be used in combination to solve multiple technical problems at the same time. For those skilled in the art, several deformations and improvements can be made without departing from the technical solution of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A fuel tank structure, characterized in that: It includes a box body, an oil nozzle and a cover body, the box body includes a first shell body and a second shell body that are stamped, the first shell body is welded to the second shell body, the first shell body and the second shell body both include a top wall, the top wall includes a first top wall, a second top wall and a third top wall that descend in a step-like manner, the oil nozzle is welded to the front wall and the rear wall and is perpendicular to the front wall and the rear wall, a handle is fixed between the first top wall and the second top wall, the oil nozzle is welded to the top wall of the first shell body or the second shell body, and a connector for connecting the cover body is welded to the oil nozzle.

2. The fuel tank structure according to claim 1, characterized in that: The first shell and the second shell further include side walls provided with reinforcing ribs.

3. The fuel tank structure according to claim 2, characterized in that: The first shell and the second shell further include a rear wall perpendicular to the side wall, and the first top wall, the side wall and the rear wall form an air storage chamber.

4. The fuel tank structure according to claim 3, characterized in that: The handle comprises a gripping portion, the edge of which is bent inwards to form a smooth arc surface.

5. The fuel tank structure according to claim 4, characterized in that: A notch is arranged at the connection between the handle and the top wall to avoid the connection between the first shell and the second shell.

6. The fuel tank structure according to claim 1, characterized in that: The cover body comprises a cover assembly, a shell is arranged on the cover assembly, a link part is fixed on the shell, and a connecting piece is flexibly connected with the link part.

7. The fuel tank structure according to claim 6, characterized in that: It includes a claw, a limit piece and a guide rod. The claw is hinged on the cover body. A torsion spring is arranged at the hinge. Under the pre-tightening force of the torsion spring, the claw is in a clamping state. The limit piece is fixedly arranged on the guide rod. A sealing part is arranged at the lower end of the guide rod. A sealing ring is fixed at the lower end of the cover body. The guide rod passes through the sealing ring and is threadedly connected with the cover body. When clamped, the sealing part fits with the sealing ring.

8. The fuel tank structure according to claim 6, characterized in that: The cover body is provided with a convex column, and a plurality of long grooves and short grooves are axially staggered and equidistantly provided on the convex column, and an arc groove is provided between the long grooves and the short grooves, and the starting points of the long grooves and the short grooves are both provided on the arc grooves. A clamping claw, a limiter and a spring are provided between the cover body and the shell, and the clamping claw is hinged on the cover body, and the limiter is provided outside the convex column, and a plurality of protrusions are provided on the inner side of the limiter, and the protrusion spacing is the same as the long groove spacing, and a guide rod is rotatably provided in the shell, and the limiter is slidably provided in the axial direction of the cover body.

9. The fuel tank structure according to claim 8, characterized in that: A sealing ring is fixed inside the cover body, a convex column is provided with an exhaust hole, the exhaust hole runs through the cover body, a sealing part is fixed at the end of the guide rod away from the shell, the sealing part extends into the exhaust hole and fits with the sealing ring.

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