Small anti-theft door for drain outlet of oil tank

By designing an anti-theft door for the fuel tank drain outlet, and utilizing the combination of a rotating door and a limit component, the problem of easy theft of the fuel tank drain outlet was solved, thus ensuring fuel safety and equipment operation reliability.

CN224093485UActive Publication Date: 2026-04-07GB POWER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-06
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing fuel tank drain outlets are easy targets for criminals to steal fuel, leading to fuel waste and safety hazards.

Method used

A burglarproof door for the drain outlet of an oil tank was designed. Through the combined use of a rotating door, a limiting component, and a welded pipe, the burglarproof door can be reliably opened with a key, preventing unauthorized entry.

Benefits of technology

It effectively prevents fuel theft and improves the safety of the fuel tank and the normal operation and reliability of the equipment.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224093485U_ABST
    Figure CN224093485U_ABST
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Abstract

The utility model discloses an oil tank drain outlet anti-theft small door, and relates to the field of oil tank drain outlet anti-theft small doors, the oil tank drain outlet anti-theft small door comprises a tank body and an oil tank, the oil tank is installed at the bottom of the tank body, the oil tank anti-theft small door further comprises a rotating door, the rotating door is rotatably installed on one side of the tank body, a door lock is fixedly installed on the rotating door, and a rear baffle is fixedly installed on one side of the oil tank; a protection box is fixedly installed on the side, close to the oil tank, of the rear baffle, an anti-theft door is installed in the protection box through a hinge support, a connecting plate is fixedly installed on one side of the anti-theft door, and a round hole is formed in the connecting plate. The partition plate is fixedly installed on the oil tank, an L-shaped supporting frame is fixed to one side of the rear baffle, a welded pipe is installed in the L-shaped supporting frame in an inserted mode, one end of the welded pipe penetrates through the protection box and extends into the round hole, and the other end of the welded pipe penetrates through the partition plate and extends into the tank body; and the limiting assembly is located on the partition plate and used for limiting the welded pipe. According to the anti-theft door, when the anti-theft door is opened, the rotating door needs to be opened through a key firstly, then a hand stretches into the box body, one end of the welded pipe is moved out of the round hole, and then the anti-theft door can be opened, so that the anti-theft performance of the anti-theft door can be enhanced.
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Description

TECHNICAL FIELD

[0001] The application relates to the field of oil tank blowdown port anti-theft small doors, in particular to an oil tank blowdown port anti-theft small door. BACKGROUND

[0002] In the field of industrial equipment and transportation, the oil tank is a key component for storing fuel, and its safety and maintenance convenience are crucial.

[0003] The oil tank blowdown port is a blowdown port reserved for the diesel generator set for periodic cleaning of the oil tank, and is opened and closed after being connected with an oil pipe and a valve to discharge diesel oil and cleaning discharge. At present, the oil tank blowdown port is usually directly exposed to the outside or is only equipped with a simple protection structure, which makes the blowdown port an easy target for fuel theft by illegal persons, not only causing waste of fuel resources, but also affecting the normal operation of the equipment and bringing safety hazards. In view of this, the application provides an oil tank blowdown port anti-theft small door. CONTENT OF THE UTILITY MODEL

[0004] In order to avoid fuel theft by illegal persons, the application provides an oil tank blowdown port anti-theft small door.

[0005] The oil tank blowdown port anti-theft small door provided by the application adopts the following technical scheme: comprising a box body and an oil tank, the oil tank is installed at the bottom of the box body, and further comprising:

[0006] A rotating door is rotatably installed on one side of the box body, a door lock is fixedly installed on the rotating door, a back baffle is fixedly installed on one side of the oil tank, a protection box is fixedly installed on the side of the back baffle close to the oil tank, a theft-proof door is installed in the protection box through a hinge support, a connecting plate is fixedly installed on one side of the theft-proof door, and a circular hole is formed in the connecting plate;

[0007] A partition plate is fixedly installed on the oil tank, an L-shaped support frame is fixedly installed on one side of the back baffle, a welded pipe is insertedly installed in the L-shaped support frame, one end of the welded pipe penetrates through the protection box and extends into the circular hole, and the other end of the welded pipe penetrates through the partition plate and extends into the box body;

[0008] A limiting assembly is arranged on the partition plate and used for limiting the welded pipe.

[0009] By adopting the above technical solution, when the security door needs to be opened, the staff unlocks the door with a key, thereby releasing the revolving door from the box. The revolving door can then be rotated and opened. Subsequently, the limiting component is used to release the welding pipe from its fixation. Then, the staff can pull the welding pipe upwards, causing it to move upwards within the partition and L-shaped support frame. One end of the welding pipe will move upwards within the protective box until it is pulled out of the round hole. At this point, the connecting plate is released from its fixation, and the security door is also released. Then, under the action of the hinge bracket, the security door can be rotated and opened. This process requires first opening the revolving door with a key, then reaching into the box and removing one end of the welding pipe from the round hole to open the security door, thus enabling the security door to achieve its anti-theft function.

[0010] Preferably, the limiting component includes:

[0011] A fixing block is fixedly installed on the top of the partition. A sliding groove is formed in the fixing block, and a limiting block is slidably installed in the sliding groove. A groove is formed on the side of the welded pipe near the fixing block. One end of the limiting block passes through one side of the sliding groove and extends into the groove. A pull rod is fixedly installed on the other end of the limiting block. One end of the pull rod passes through the other side of the sliding groove and extends to the outside. A spring is sleeved on the pull rod and located in the sliding groove.

[0012] By adopting the above technical solution, by reaching into the box and pulling the lever, the lever will move away from the welded pipe. At this time, the limiting block will also move away from the welded pipe, and the spring will be compressed and contracted until one end of the limiting block is pulled out of the groove. At this time, the welded pipe will be released from fixation.

[0013] Preferably, one end of the limiting block is inserted into the groove, and both ends of the spring are respectively tightly welded to the other end of the limiting block and the inner wall of the groove.

[0014] By adopting the above technical solution, it is ensured that one end of the limiting block can be inserted into the groove, thus guaranteeing the structural stability of the spring.

[0015] Preferably, the welded pipe is inserted into the protective box and the partition.

[0016] By adopting the above technical solution, it is ensured that the welded pipe can be inserted into the protective box and the partition.

[0017] Preferably, one end of the welded pipe is inserted into the round hole.

[0018] By adopting the above technical solution, it is ensured that one end of the welded pipe can be inserted into the round hole.

[0019] Preferably, the security door and the connecting plate are integrally formed.

[0020] By adopting the above technical solution, the structural stability between the security door and the connecting plate is ensured.

[0021] Preferably, the L-shaped support frame is located directly above the connecting plate.

[0022] By adopting the above technical solution, it is ensured that the welded pipe can be inserted into the L-shaped support frame and the connecting plate.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When the security door needs to be opened, the staff unlocks the door with a key, thus releasing the revolving door from the enclosure. The revolving door can then be rotated and opened. Subsequently, the limiting component releases the welding pipe from its fixation. The staff can then pull the welding pipe upwards until one end of the pipe is pulled out of the round hole. At this point, the connecting plate will be released from its fixation, and the security door will also be released. Then, under the action of the hinge bracket, the security door can be rotated and opened. This process requires first opening the revolving door with a key, then reaching inside the enclosure and removing one end of the welding pipe from the round hole to open the security door, thus enhancing its security. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an anti-theft door for a fuel tank drain outlet according to an embodiment of this application;

[0026] Figure 2 The embodiments of this application mainly embody Figure 1 A schematic diagram of the structure at point A in the middle;

[0027] Figure 3 This is a schematic diagram illustrating the main structural components of the overall device in the embodiments of this application;

[0028] Figure 4 This is a schematic diagram illustrating the main structure of the rear baffle area in the embodiments of this application;

[0029] Figure 5 This is a schematic diagram illustrating the main structure of the fuel tank area in the embodiments of this application;

[0030] Figure 6 The embodiments of this application mainly embody Figure 5 A schematic diagram of the structure at point B in the middle;

[0031] Figure 7 This is a schematic diagram illustrating the main structure of the welded pipe area in the embodiments of this application;

[0032] Figure 8 The embodiments of this application mainly embody Figure 7A schematic diagram of the structure at point C.

[0033] Reference numerals in the attached drawings: 1. Box body; 2. Spring; 3. Revolving door; 4. Door lock; 5. Rear panel; 6. Security door; 7. Oil tank; 8. L-shaped support frame; 9. Partition; 10. Welded pipe; 11. Fixing block; 12. Pull rod; 13. Limiting block; 14. Groove; 15. Protective box; 16. Slide groove; 17. Connecting plate; 18. Round hole; 19. Hinge bracket. Detailed Implementation

[0034] The following is in conjunction with the appendix Figures 1-8 This application will be described in further detail.

[0035] This application discloses a burglarproof small door for the drain outlet of an oil tank.

[0036] Example

[0037] Reference Figure 1 A burglarproof door for a fuel tank drain outlet includes a housing 1 and a fuel tank 7, the fuel tank 7 being installed at the bottom of the housing 1, and further includes:

[0038] A rotating door 3 is rotatably installed on one side of the housing 1. A door lock 4 is fixedly installed on the rotating door 3. A rear baffle 5 is fixedly installed on one side of the oil tank 7. A protective box 15 is fixedly installed on the side of the rear baffle 5 near the oil tank 7. An anti-theft door 6 is installed inside the protective box 15 through a hinge bracket 19. A connecting plate 17 is fixedly installed on one side of the anti-theft door 6. A round hole 18 is opened on the connecting plate 17.

[0039] The partition 9 is fixedly installed on the oil tank 7. An L-shaped support frame 8 is fixed on one side of the rear baffle 5. A welded pipe 10 is inserted into the L-shaped support frame 8. One end of the welded pipe 10 passes through the protective box 15 and extends into the round hole 18. The other end of the welded pipe 10 passes through the partition 9 and extends into the box 1.

[0040] A limiting component is located on the partition 9 and is used to limit the welded pipe 10.

[0041] When the security door 6 needs to be opened, the staff unlocks the door lock 4 with a key, thereby releasing the rotating door 3 from the box 1. The rotating door 3 can then be rotated and opened. Subsequently, the limiting component is used to release the welding pipe 10 from its fixation. Then, the staff can pull the welding pipe 10 upwards. The welding pipe 10 will move upwards within the partition 9 and the L-shaped support frame 8. One end of the welding pipe 10 will move upwards within the protective box 15 until one end of the welding pipe 10 is pulled out from the round hole 18. At this time, the connecting plate 17 will be released from its fixation, and the security door 6 will also be released from its fixation. Then, under the action of the hinge bracket 19, the security door 6 can be rotated and opened. This process requires first opening the rotating door 3 with a key, then reaching into the box 1 and removing one end of the welding pipe 10 from the round hole 18 before the security door 6 can be opened, thus enhancing the security of the security door 6.

[0042] In this embodiment, the limiting component includes:

[0043] A fixing block 11 is fixedly installed on the top of the partition 9. A sliding groove 16 is provided in the fixing block 11. A limiting block 13 is slidably installed in the sliding groove 16. A groove 14 is provided on the side of the welded pipe 10 near the fixing block 11. One end of the limiting block 13 passes through one side of the sliding groove 16 and extends into the groove 14. A pull rod 12 is fixedly installed on the other end of the limiting block 13. One end of the pull rod 12 passes through the other side of the sliding groove 16 and extends to the outside. A spring 2 is sleeved on the pull rod 12 and located in the sliding groove 16.

[0044] When you reach into the housing 1 and pull the lever 12, the lever 12 will move away from the welded pipe 10. At this time, the limiting block 13 will also move away from the welded pipe 10, and the spring 2 will be compressed and contracted until one end of the limiting block 13 is pulled out from the groove 14. At this time, the welded pipe 10 will be released from fixation.

[0045] In this embodiment, one end of the limiting block 13 is inserted into the groove 14, and the two ends of the spring 2 are respectively tightly welded to the other end of the limiting block 13 and the inner wall of the slide groove 16.

[0046] In this way, one end of the limiting block 13 can be inserted into the groove 14 to ensure the structural stability of the spring 2.

[0047] In this embodiment, the welded pipe 10 is inserted into the protective box 15 and the partition 9.

[0048] This ensures that the welded pipe 10 can be inserted into the protective box 15 and the partition 9.

[0049] In this embodiment, one end of the welded pipe 10 is inserted into the round hole 18.

[0050] In particular, it is ensured that one end of the welded pipe 10 can be inserted into the round hole 18.

[0051] In this embodiment, the security door 6 and the connecting plate 17 are integrally formed.

[0052] This includes ensuring the structural stability between the security door 6 and the connecting plate 17.

[0053] In this embodiment, the L-shaped support frame 8 is located directly above the connecting plate 17.

[0054] This ensures that the welded pipe 10 can be inserted into the L-shaped support frame 8 and the connecting plate 17.

[0055] The implementation principle of the anti-theft door for the drain outlet of an oil tank in this embodiment is as follows: When it is necessary to open the anti-theft door 6, the staff unlocks the door lock 4 with a key, thereby releasing the rotating door 3 from the tank body 1. Then, the rotating door 3 can be rotated and opened. Subsequently, the staff reaches into the tank body 1 and pulls the lever 12, causing the lever 12 to move away from the welded pipe 10. At this time, the limiting block 13 will also move away from the welded pipe 10, and the spring 2 will be compressed and contracted until one end of the limiting block 13 is pulled out from the groove 14. At this time, the welded pipe 10 will be released from its fixation. Then, the staff can... Pull the welded pipe 10 upwards. The welded pipe 10 will move upwards within the partition 9 and the L-shaped support frame 8. One end of the welded pipe 10 will move upwards within the protective box 15 until one end of the welded pipe 10 is pulled out from the round hole 18. At this time, the connecting plate 17 will be released from its fixed position, and the anti-theft door 6 will also be released from its fixed position. Then, under the action of the hinge bracket 19, the anti-theft door 6 can be rotated and opened. This process requires first opening the rotating door 3 with a key, and then reaching into the inside of the box 1 and removing one end of the welded pipe 10 from the round hole 18 before the anti-theft door 6 can be opened, thereby enhancing the anti-theft capabilities of the anti-theft door 6.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A burglarproof door for a fuel tank drain outlet, comprising a housing (1) and a fuel tank (7), wherein the fuel tank (7) is installed at the bottom of the housing (1), characterized in that, Also includes: A revolving door (3) is rotatably installed on one side of the housing (1). A door lock (4) is fixedly installed on the revolving door (3). A rear baffle (5) is fixedly installed on one side of the oil tank (7). A protective box (15) is fixedly installed on the side of the rear baffle (5) near the oil tank (7). An anti-theft door (6) is installed inside the protective box (15) through a hinge bracket (19). A connecting plate (17) is fixedly installed on one side of the anti-theft door (6). A round hole (18) is opened on the connecting plate (17). A partition (9) is fixedly installed on the oil tank (7). An L-shaped support frame (8) is fixed on one side of the rear baffle (5). A welded pipe (10) is inserted into the L-shaped support frame (8). One end of the welded pipe (10) passes through the protective box (15) and extends into the round hole (18). The other end of the welded pipe (10) passes through the partition (9) and extends into the box body (1). A limiting component is located on the partition (9) and is used to limit the welded pipe (10).

2. The anti-theft small door for the drain outlet of an oil tank according to claim 1, characterized in that: The limiting component includes: A fixing block (11) is fixedly installed on the top of the partition (9). A sliding groove (16) is provided in the fixing block (11). A limiting block (13) is slidably installed in the sliding groove (16). A groove (14) is provided on the side of the welded pipe (10) near the fixing block (11). One end of the limiting block (13) passes through one side of the sliding groove (16) and extends into the groove (14). A pull rod (12) is fixedly installed on the other end of the limiting block (13). One end of the pull rod (12) passes through the other side of the sliding groove (16) and extends to the outside. A spring (2) is sleeved on the pull rod (12) and located in the sliding groove (16).

3. The anti-theft small door for the drain outlet of an oil tank according to claim 2, characterized in that: One end of the limiting block (13) is inserted into the groove (14), and the two ends of the spring (2) are respectively tightly welded to the other end of the limiting block (13) and the inner wall of the slide (16).

4. The anti-theft door for the drain outlet of an oil tank according to claim 3, characterized in that: The welded pipe (10) is inserted into the protective box (15) and the partition (9).

5. The anti-theft small door for the drain outlet of an oil tank according to claim 4, characterized in that: One end of the welded pipe (10) is inserted into the round hole (18).

6. The anti-theft small door for the drain outlet of an oil tank according to claim 1, characterized in that: The security door (6) and the connecting plate (17) are integrally formed.

7. The anti-theft small door for the drain outlet of an oil tank according to claim 6, characterized in that: The L-shaped support frame (8) is located directly above the connecting plate (17).