Auxiliary additional device for verification of fuel dispenser

Abstract

The utility model discloses a fuel dispenser verification auxiliary additional device which comprises an auxiliary additional device, the auxiliary additional device comprises a through type rubber shell, and multiple layers of telescopic fixing assemblies are arranged on the inner wall of the through type rubber shell at equal intervals. Each layer of telescopic fixing assembly comprises four contact bases arranged on the inner wall of the through type rubber shell at equal intervals, one side of the inner wall of each contact base is fixedly connected with a telescopic contact through a spring, and the telescopic fixing assemblies are arranged in a staggered mode. According to the utility model, through the arrangement of the auxiliary additional device formed by the through-type rubber shell, the contact base and the telescopic contacts, when an oiling machine is calibrated, the plurality of telescopic contacts stably abut against the gun nozzle of the oiling gun under the action of the spring, so that the gun nozzle can be vertically inserted into a liquid guide pipe; the automatic gun jumping of the oiling machine in advance due to the fact that fuel oil is sprayed out of the gun nozzle, touches the wall of the liquid guide pipe, flows back and submerges the air inlet pipe of the gun nozzle in the oiling process is avoided, and the normal oiling machine verification process is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of fuel dispenser metering and verification technology, specifically to an auxiliary device for fuel dispenser verification. Background Technology

[0002] Standard metal measuring instruments, serving as the primary standard in fuel dispenser calibration, are crucial for ensuring accurate fuel dispensing. The traditional structure of a standard metal measuring instrument (from top to bottom) includes an overflow cover, measuring neck, liquid guide tube, level tube, scale, and cylindrical body. During fuel dispenser calibration, the calibrator personnel directly insert the fuel dispenser's nozzle vertically into the liquid guide tube through the overflow cover of the standard metal measuring instrument, then begin dispensing fuel and verify the amount dispensed.

[0003] Traditional standard metal measuring instruments have the following problems during the oil filling and calibration process:

[0004] 1. If the diameter of the liquid guide tube is larger than the nozzle of the fuel dispenser, the nozzle may be tilted after being inserted into the liquid guide tube, and the fuel outlet of the fuel dispenser may come into contact with the wall of the liquid guide tube. During the refueling process, fuel sprayed from the outlet hits the wall of the liquid guide tube and flows back and submerges the air inlet of the nozzle, causing the fuel dispenser to automatically shut off prematurely, which affects the normal calibration process of the fuel dispenser.

[0005] 2. Because the diameter of the liquid guide tube is larger than the nozzle of the fuel dispenser, when the fuel flow rate of the fuel dispenser is too high, fuel may overflow or spray out from the gap between the liquid guide tube and the nozzle into the standard metal measuring vessel, resulting in inaccurate measurement.

[0006] 3. To ensure that the fuel nozzle does not shut off prematurely, the nozzle needs to be placed vertically. Traditional calibration devices require manual handling throughout the process, which greatly increases the workload and physical exertion of the calibration personnel.

[0007] 4. After the set amount of fuel is dispensed, the inspector will read the level gauge, calculate the error of the refueling amount, and determine whether the fuel dispenser is qualified. During this stage, the fuel in the standard metal measuring container will evaporate into the air through the liquid guide tube. In addition, fuel will also evaporate from the gap between the liquid guide tube and the fuel nozzle during the refueling process, resulting in fuel waste and environmental pollution. Utility Model Content

[0008] To address the aforementioned problems, the purpose of this utility model is to provide an auxiliary device for calibrating fuel dispensers, thereby resolving the issues raised in the background section.

[0009] To achieve the above objectives, this utility model proposes an auxiliary device for the calibration of a fuel dispenser, comprising an auxiliary device inserted into the liquid guide tube of a standard metal measuring instrument, wherein the bottom end of the liquid guide tube is fixedly connected to the tank of the standard metal measuring instrument.

[0010] The auxiliary device includes a through-type rubber housing. The inner wall of the through-type rubber housing is provided with multiple layers of telescopic fixing components at equal intervals. Each layer of telescopic fixing components includes four contact bases that are equally spaced on the inner wall of the through-type rubber housing. One side of the inner wall of each contact base is fixedly connected to a telescopic contact by a spring. The telescopic contact can stably press against the periphery of the fuel nozzle.

[0011] The telescopic fixing components on each layer are staggered.

[0012] In one example, a limiting bevel is provided on one side of each of the telescopic contacts.

[0013] In one example, the upper part of the liquid guide tube is connected to an overflow shroud, and the upper part of the through-type rubber housing is adapted to the interior of the overflow shroud.

[0014] In one example, the contact between every two horizontally opposite telescopic contacts forms a V-shaped bayonet.

[0015] The auxiliary device for fuel dispenser calibration proposed in this utility model can bring the following benefits:

[0016] Beneficial effects:

[0017] This is an auxiliary device for calibrating a fuel dispenser, comprising an auxiliary device formed by a through-type rubber housing, a contact base, and telescopic contacts.

[0018] 1. During refueling inspection, multiple telescopic contacts, under the action of springs, can stably press the nozzle of the fuel dispenser, allowing it to be inserted vertically into the liquid guide tube. This prevents fuel from spraying out of the nozzle and hitting the wall of the liquid guide tube, causing it to flow back and submerge the air inlet pipe of the nozzle, thus preventing the fuel dispenser from automatically shutting off prematurely and ensuring the normal inspection process of the fuel dispenser.

[0019] 2. It can effectively prevent fuel from spraying out or overflowing from the gap between the liquid guide tube and the fuel nozzle due to the difference in diameter, which would lead to inaccurate measurements.

[0020] 3. It can effectively reduce the time that manual handling of the fuel nozzle is required during the fuel dispenser calibration process, thus reducing the workload of personnel;

[0021] 4. It can effectively reduce fuel waste and environmental pollution caused by fuel evaporation. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the auxiliary device structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the planar distribution structure of the telescopic fixing component of this utility model.

[0026] Figure 4 This is a schematic diagram of the connection structure between the contact and the contact base of this utility model;

[0027] Figure 5 This is a top view schematic diagram of the distribution structure of the telescopic fixing component of this utility model.

[0028] In the diagram: 1. Fuel nozzle; 2. Overflow cover; 3. Liquid guide tube; 4. Auxiliary device; 5. Limiting bevel; 6. Through-type rubber shell; 7. Contact base; 8. Spring; 9. Telescopic contact; 10. Standard metal measuring vessel container. Detailed Implementation

[0029] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0030] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

[0034] like Figures 1-5 As shown, an embodiment of this utility model proposes an auxiliary device for fuel dispenser calibration, including an auxiliary device 4. The auxiliary device 4 is inserted into the liquid guide tube 3 of a standard metal measuring instrument, and the bottom end of the liquid guide tube 3 is fixedly connected to the standard metal measuring instrument tank 10.

[0035] The auxiliary device 4 includes a through-type rubber housing 6. The inner wall of the through-type rubber housing 6 is provided with multiple layers of telescopic fixing components at equal intervals. Each layer of telescopic fixing components includes four contact bases 7 equidistantly arranged on the inner wall of the through-type rubber housing 6. Each contact base 7 has a telescopic contact 9 fixedly connected to one side of its inner wall by a spring 8. The telescopic contact 9 can stably press against the periphery of the fuel nozzle 1. Each layer of telescopic fixing components is staggered. To meet the length of the fuel nozzle 1, the spring stroke of the auxiliary device, the width of the contact base 7, and the gap between the two layers of bases are set according to the size of the standard metal measuring instrument and the diameter of the fuel nozzle. The included angle between any two adjacent bases in the two layers is 30°. To ensure contact fixation, the cavity width of the base where the spring 8 is installed is greater than the contact width, and the bottom of the contact has a locking slot.

[0036] The upper part of the liquid guide tube 3 is connected to the overflow hood 2, and the upper part of the through rubber shell 6 is adapted to the interior of the overflow hood 2.

[0037] To increase the friction between the auxiliary device 4 and the overflow cover 2 and the liquid guide tube 3 to fix the auxiliary device, the outer shell material of the auxiliary device is nitrile rubber; to reduce the friction between the telescopic contact 9 of the auxiliary device and the nozzle 1 of the refueling gun, the telescopic contact 9 is made of polytetrafluoroethylene.

[0038] Each telescopic contact 9 is square, with a limiting bevel 5 on one side. A V-shaped bayonet is formed between every two horizontally opposite telescopic contacts 9. The opening angle of the bevel is 45°, and the tip of the contact is 90°.

[0039] Working principle: When in use, the auxiliary device 4 is inserted into the inlet of the liquid guide tube 3 of the standard metal measuring vessel, and then the nozzle 1 of the fuel dispenser is inserted. Due to the extension and retraction of the spring 8, the telescopic contacts 9 on both sides press against the nozzle 1, fixing the nozzle 1 vertically in the center. This effectively prevents fuel from spraying onto the wall of the liquid guide tube and flowing back during refueling, thus preventing the fuel dispenser from automatically shutting off prematurely. The multi-layered staggered telescopic contacts 9 are in close contact with the nozzle to reduce fuel evaporation and spillage. Through the fixation of the multi-layered telescopic contacts from top to bottom, the fuel dispenser is vertically fixed on the standard metal measuring vessel during the calibration process, reducing the time that the calibrator needs to hold the nozzle.

[0040] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0041] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A fuel dispenser calibration auxiliary device, comprising an auxiliary device (4), wherein the auxiliary device (4) is inserted into the liquid guide tube (3) of a standard metal measuring instrument, and the bottom end of the liquid guide tube (3) is fixedly connected to the standard metal measuring instrument tank (10); Its features are, The auxiliary device (4) includes a through-type rubber housing (6). The inner wall of the through-type rubber housing (6) is provided with multiple telescopic fixing components at equal intervals. Each telescopic fixing component includes four contact bases (7) that are equally spaced on the inner wall of the through-type rubber housing (6). Each contact base (7) has a telescopic contact (9) fixedly connected to one side of its inner wall by a spring (8). The telescopic contact (9) can stably press against the periphery of the nozzle (1) of the fuel gun. The telescopic fixing components on each layer are staggered.

2. The auxiliary device for fuel dispenser calibration according to claim 1, characterized in that: Each of the telescopic contacts (9) has a limiting bevel (5) on one side.

3. The auxiliary device for fuel dispenser calibration according to claim 2, characterized in that: The liquid guide tube (3) is connected to an overflow hood (2) above it, and the upper part of the through rubber shell (6) is adapted to the interior of the overflow hood (2).

4. The auxiliary device for calibrating a fuel dispenser according to claim 1, characterized in that: A V-shaped bayonet is formed between each pair of horizontally opposite telescopic contacts (9).

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