Automatic sampling apparatus for aviation fuel detection

Abstract

The application relates to the technical field of fuel production, and discloses an automatic sampling device for aviation fuel detection, which comprises a fixing frame, a vertical frame and a support, and a sampling assembly is arranged outside the fixing frame. When base materials and various components of fuel are fully mixed in a blending barrel according to a preset ratio, a metering pump on a mounting plate is started, sample is drawn to a temporary storage tank through a sampling pipe and an elbow pipe, after waiting for a period of time, bubbles in the mixture disappear, a sampling valve on an inclined pipe is used to guide target-dose sample into a constant-temperature sealed conductivity cell, so that the conductivity and the decay rate of the sample can be conveniently detected, automatic sampling and fully-automatic sealed transmission are realized, through the transfer of the temporary storage tank, the influence of bubbles in the mixture on the test result can be eliminated, the sampling valve is used to improve the accurate adjustment of the detection dose, and then the operation reliability and the test accuracy of the equipment are improved.

Description

Technical Field

[0001] This invention relates to the field of fuel production technology, specifically to an automatic sampling device for aviation fuel testing. Background Technology

[0002] As the core power source for aircraft, the purity, compositional uniformity, and physicochemical properties of aviation fuel are directly related to flight safety. Therefore, during the production and blending of aviation fuel, fuel samples must be accurately tested to ensure that the products meet aviation industry standards.

[0003] Automatic sampling equipment is a key piece of equipment in the aviation fuel testing process. It plays an important role in sample collection, transmission and pretreatment. Its operational reliability, sampling accuracy and testing efficiency directly affect the accuracy of the test results and the continuity of the production process.

[0004] Existing aviation fuel sampling equipment has certain shortcomings in practical applications. On the one hand, most sampling equipment lacks an effective bubble elimination mechanism. Bubbles generated during fuel blending can enter the detection module with the sample, leading to deviations in the detection results of key indicators such as conductivity and decay rate, thus affecting the accuracy of conductivity and decay rate detection. On the other hand, some equipment lacks a complete constant temperature blending and impurity filtration structure, resulting in uneven mixing of fuel components, excessive temperature fluctuations in materials, and impurities that easily clog sampling pipelines and damage detection elements, further reducing the stability of equipment operation. In addition, the existing equipment has poor coordination between sampling, detection, and finished product output processes, with many manual intervention steps. This not only increases the intensity of manual labor but also easily affects production efficiency due to operational errors, making it difficult to achieve fully automated closed-loop operation. In view of this, we propose an automatic sampling device for aviation fuel detection. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic sampling device for aviation fuel testing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automatic sampling device for aviation fuel testing includes a fixed frame, a vertical frame, and a support. A mixing tank is fixedly installed on the top of the fixed frame, and a tank lid is fixed to the top sealing flange of the mixing tank. A sampling component is provided outside the fixed frame, and the sampling component includes a mounting plate. The mounting plate is fixedly mounted on the bracket. A metering pump and a constant-temperature sealed conductivity cell are fixedly mounted on the top of the mounting plate. A temporary storage tank is fixedly mounted inside the top of the bracket. One end of a sampling tube is fixedly mounted inside the arc-shaped sidewall at the top of the mixing tank. The output end of the sampling tube is fixedly connected to the input end of the metering pump. A bent pipe is fixedly mounted between the output end of the metering pump and the input end of the temporary storage tank. An inclined pipe is fixedly mounted between the output end of the temporary storage tank and the input end of the constant-temperature sealed conductivity cell. A sampling valve is provided at the top of the inclined pipe.

[0007] In a further embodiment, the bottom opening of the sampling tube is close to the upper surface of the bottom of the mixing tank.

[0008] In a further embodiment, the constant-temperature sealed conductivity cell is fitted with a detachable loading container to receive the input sample, facilitating cleaning.

[0009] In a further embodiment, an auxiliary component is provided on the outside of the fixing frame. The auxiliary component includes a disc, which is integrally formed at the center of the bottom of the mixing tank for better heat conduction.

[0010] In a further embodiment, a heater is placed inside the fixing frame, a heat-conducting roller is fixedly installed at the output end of the heater, a heat-conducting plate is integrally formed at the top of the heat-conducting roller, a heat-conducting ring is snapped into the inside of the heat-conducting plate, a mounting bracket is fixedly installed at the top of the heat-conducting roller, and the mounting bracket is fixedly installed at the bottom of the mixing barrel by fasteners, with the top of the mounting bracket fitting against the bottom of the heat-conducting ring.

[0011] In a further embodiment, multiple sets of heat-conducting plates and mounting brackets are provided, and each set of heat-conducting plates and mounting brackets is arranged in an equally spaced, staggered circular array with the center of the circular cross-section of the heat-conducting roller as the array center. Multiple sets of heat-conducting rings are provided, and the diameter of each set of heat-conducting rings is arranged coaxially, with the diameter gradually increasing from the inside to the outside. This allows the material inside the mixing tank to maintain a constant temperature, resulting in a better mixing effect.

[0012] In a further embodiment, a filter cartridge is attached to the bottom of the sampling tube. The filter cartridge can intercept large particulate impurities, thus avoiding affecting the accuracy of subsequent sampling and testing.

[0013] In a further embodiment, a mixing assembly is also provided outside the fixed frame. The mixing assembly includes a geared motor, which is fixedly mounted on the vertical frame. The output end of the geared motor is fixedly mounted to the top of a stirring shaft via a coupling. The stirring shaft is rotatably mounted inside the center of the bucket lid via a sealed bearing. A stirring paddle and an auger paddle are fixedly mounted from top to bottom on the bottom end of the stirring shaft. A breather valve is provided inside the bucket lid, and the output end of the breather valve is connected to the input end of the waste gas recovery equipment via a pipeline.

[0014] In a further embodiment, multiple sets of feed pipes are fixedly installed on the arc-shaped sidewall of the mixing tank. The input ends of the multiple sets of feed pipes are respectively connected to the output ends of the feeding equipment for the base material and the various component materials through pipelines. A discharge port is fixedly installed at the bottom output end of the mixing tank, and the output end of the discharge port is connected to the input end of the finished product collection equipment through pipelines.

[0015] In a further embodiment, electromagnetic regulating valves are installed on the discharge port and multiple sets of feed pipes to improve production efficiency.

[0016] Compared with the prior art, the present invention provides an automatic sampling device for aviation fuel detection, which has the following beneficial effects: 1. This automatic sampling equipment for aviation fuel testing, in order to improve operational reliability and testing accuracy, is equipped with a sampling component. After the basic materials of the fuel and various components are fully mixed in a preset ratio inside the mixing tank, the metering pump on the mounting plate is activated. The sample is drawn into a temporary storage tank through the sampling tube and the curved tube. After a period of time, the air bubbles in the mixture disappear. Then, with the help of the sampling valve on the inclined tube, the sample of the target dose is introduced into a constant temperature sealed conductivity cell. This allows for convenient detection of the conductivity and decay rate of the sample, thus realizing automatic sampling and fully automatic sealed transmission. The transfer through the temporary storage tank can eliminate the influence of air bubbles in the mixture on the test results. Combined with the sampling valve, the precise adjustment of the detection dose is improved, thereby enhancing the operational reliability and testing accuracy of the equipment.

[0017] 2. This automatic sampling equipment for aviation fuel testing, in order to improve the blending effect and enhance the accuracy of sampling tests, incorporates auxiliary components. An integrally formed disc at the bottom of the blending tank ensures a tighter fit between the heat-conducting plate and heat-conducting ring. When the heater is activated, the heat-conducting rollers work together to better transfer heat to the blending tank. The mounting bracket further secures the heat-conducting plate and ring, maintaining a constant temperature inside the blending tank and resulting in better blending. The filter cartridge intercepts large particles of impurities, preventing them from affecting the accuracy of subsequent sampling tests.

[0018] 3. This automatic sampling equipment for aviation fuel testing, in order to improve the practicality of the equipment, is equipped with a mixing component, along with a feed pipe and a corresponding electromagnetic regulating valve. The basic materials and various components of the fuel are input into the mixing tank. When the geared motor is started, the sealing bearing causes the stirring shaft to drive the stirring paddle and auger paddle to rotate. The spiral structure of the auger paddle continuously tumbles the mixture upwards, while the mixture is continuously pushed downwards by gravity, thus ensuring thorough mixing of the materials. The exhaust gas is discharged to the exhaust gas collection equipment through the breather valve. After the mixture is tested by the sampling component and found to meet the preset standards, the finished product is transported to the finished product collection equipment through the discharge port and the corresponding electromagnetic regulating valve. In summary, this improves the practicality of the equipment and increases production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective; Figure 3 This is a schematic cross-sectional view of part of the structure of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram of region A in the middle; Figure 5 This is a cross-sectional view of the mixing tank of the present invention; Figure 6 This is a cross-sectional view of the mixing barrel from another perspective of the present invention; Figure 7 This is a schematic diagram of the structural connection of the auxiliary component part of the present invention.

[0020] Explanation of icon numbers: 1. Fixture; 11. Mixing container; 12. Container lid; 2. Vertical frame; 3. Support frame; 4. Sampling assembly; 41. Mounting plate; 42. Metering pump; 43. Thermostatic sealed conductivity cell; 44. Temporary storage tank; 45. Sampling tube; 46. Bend; 47. Inclined tube; 48. Sampling valve; 5. Auxiliary components; 51. Disc; 52. Heater; 53. Heat-conducting roller; 54. Heat-conducting plate; 55. Heat-conducting ring; 56. Mounting bracket; 57. Filter cartridge; 6. Mixing component; 61. Gear motor; 62. Stirring shaft; 63. Sealed bearing; 64. Stirring paddle; 65. Screw paddle; 66. Breather valve; 67. Feed pipe; 68. Discharge port; 69. Solenoid regulating valve. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In this application, the term "above" indicates the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is primarily used to better describe this application and its embodiments, and is not intended to limit the indicated device, element, or component to having a specific orientation, or to construct and operate in a specific orientation. Furthermore, the term "above" may also be used in certain circumstances to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0023] Please see Figures 1-7 The present invention provides a technical solution: An automatic sampling device for aviation fuel testing includes a fixed frame 1, a vertical frame 2 and a support 3. A mixing tank 11 is fixedly installed on the top of the fixed frame 1, and a tank cover 12 is fixed to the top sealing flange of the mixing tank 11.

[0024] In one embodiment of the present invention, a sampling component 4 is provided on the outside of the fixing frame 1. The sampling component 4 includes a mounting plate 41, which is fixedly mounted on the bracket 3. A metering pump 42 and a constant temperature sealed conductivity cell 43 are fixedly mounted on the top of the mounting plate 41. In addition, a detachable loading container is snapped into the constant temperature sealed conductivity cell 43 to receive the input sample for easy cleaning. A temporary storage tank 44 is fixedly mounted inside the top of the bracket 3. One end of a sampling tube 45 is fixedly mounted inside the arc-shaped side wall at the top of the mixing tank 11. The bottom opening of the sampling tube 45 is close to the upper surface of the bottom of the mixing tank 11. The output end of the sampling tube 45 is fixedly connected to the input end of the metering pump 42. A bent pipe 46 is fixedly installed between the output end of the metering pump 42 and the input end of the temporary storage tank 44. An inclined pipe 47 is fixedly installed between the output end of the temporary storage tank 44 and the input end of the constant temperature sealed conductivity cell 43. A sampling valve 48 is provided at the top of the inclined pipe 47.

[0025] In one embodiment of the present invention, an auxiliary component 5 is further provided on the outside of the fixing frame 1. The auxiliary component 5 includes a disc 51, which is integrally formed at the center of the bottom end of the mixing barrel 11 for better heat conduction. In addition, a heater 52 is placed inside the fixing frame 1. A heat-conducting roller 53 is fixedly installed at the output end of the heater 52. A heat-conducting plate 54 is integrally formed at the top end of the heat-conducting roller 53. A heat-conducting ring 55 is snapped into the inside of the heat-conducting plate 54. A mounting bracket 56 is fixedly installed at the top end of the heat-conducting roller 53. The mounting bracket 56 is fixedly installed at the bottom end of the mixing barrel 11 by fasteners. The top of the mounting bracket 56 fits snugly. At the bottom of the heat-conducting ring 55, there are four sets of heat-conducting plates 54 and mounting brackets 56. The four sets of heat-conducting plates 54 and mounting brackets 56 are arranged in an equally spaced, staggered circular array with the center of the circular cross-section of the heat-conducting roller 53 as the array center. There are multiple sets of heat-conducting rings 55, and the multiple sets of heat-conducting rings 55 are arranged in a coaxial ring. The diameter gradually increases from the inside to the outside, so that the material inside the mixing tank 11 can maintain a constant temperature and make the mixing effect better. In addition, the bottom end of the sampling tube 45 is attached to a filter cartridge 57. The filter cartridge 57 can intercept large particulate impurities and avoid affecting the accuracy of subsequent sampling and testing.

[0026] In one embodiment of the present invention, a mixing component 6 is also provided outside the fixed frame 1. The mixing component 6 includes a geared motor 61, which is fixedly installed on the vertical frame 2. The output end of the geared motor 61 is fixedly installed with the top end of the stirring shaft 62 through a coupling. The stirring shaft 62 is rotatably installed inside the center of the bucket cover 12 through a sealed bearing 63. The bottom end of the stirring shaft 62 is fixedly installed with a stirring paddle 64 and an auger paddle 65 from top to bottom. A breather valve 66 is provided inside the bucket cover 12. The output end of the breather valve 66 is connected to the input end of the waste gas recovery equipment through a pipeline. In addition, three sets of feed pipes 67 are fixedly installed on the arc-shaped side wall of the mixing bucket 11. The input ends of the three sets of feed pipes 67 are connected to the output ends of the feeding equipment for the base material and the two component materials through pipelines. A discharge port 68 is fixedly installed at the bottom output end of the mixing bucket 11. The output end of the discharge port 68 is connected to the input end of the finished product collection equipment through a pipeline. In addition, electromagnetic regulating valves 69 are provided on the discharge port 68 and the three sets of feed pipes 67 to improve production efficiency.

[0027] Working principle: First, after the equipment is started, the controller issues a command to quantitatively deliver the base material of the fuel and the two component materials into the mixing tank 11 through the three sets of feed pipes 67 of the mixing component 6 and the corresponding electromagnetic regulating valves 69. The electromagnetic regulating valves 69 can control the conveying flow rate and conveying time of each material according to the preset proportioning parameters to ensure that the proportion of materials entering the mixing tank 11 meets the testing and production requirements. After the material conveying is completed, the geared motor 61 fixedly installed on the vertical frame 2 is started. The output end of the geared motor 61 drives the stirring shaft 62 to rotate through the coupling. The stirring shaft 62 passes through the sealed bearing 6 at the center of the tank cover 12. 3. Stable rotation is achieved, which not only ensures the sealing of the mixing tank 11, but also avoids shaft shaking during the mixing process. The mixing paddle 64 and auger paddle 65, which are fixedly installed from top to bottom at the bottom of the mixing shaft 62, rotate synchronously. The spiral structure of the auger paddle 65 can continuously turn the material at the bottom of the mixing tank 11 upward. The turned material naturally falls back downward under its own gravity, which works in conjunction with the horizontal stirring action of the mixing paddle 64 to achieve thorough mixing of the material in all directions. At the same time, the exhaust gas generated in the mixing tank 11 is discharged through the breather valve 66 on the tank cover 12 and transported to the exhaust gas collection equipment through the pipeline to avoid exhaust gas leakage that pollutes the environment or affects the operation of the equipment.

[0028] Throughout the material mixing process, auxiliary component 5 starts synchronously and works continuously. The disc 51 integrally formed at the bottom of the mixing barrel 11 increases the contact area between the mixing barrel 11 and the heat-conducting components, ensuring a tight fit between the heat-conducting plate 54 and the heat-conducting ring 55. The heater 52 placed inside the fixing frame 1 generates heat after being powered on. The heat is conducted to the heat-conducting plate 54 through the heat-conducting roller 53, and then evenly transferred to the bottom of the mixing barrel 11 through multiple sets of coaxially arranged heat-conducting rings 55. The four sets of heat-conducting plates 54 and mounting frames 56, arranged in an equally spaced, staggered circular array with the center of the circular cross-section of the heat-conducting roller 53 as the array center, not only improve the heat transfer efficiency but also enhance the heat transfer efficiency of the mixing barrel 11. To ensure uniformity of material transfer, the mounting bracket 56 is also fixed to the bottom of the mixing tank 11 with fasteners, making the installation of the heat-conducting plate 54 and the heat-conducting ring 55 more secure. This effectively prevents the heat-conducting components from shifting due to vibration, ensuring that the material inside the mixing tank 11 always maintains the preset constant temperature, and greatly improving the uniformity and stability of material mixing. At the same time, the filter cartridge 57, which is snapped to the bottom of the sampling tube 45, can pre-filter the material entering the sampling tube 45, accurately intercepting large particulate impurities mixed in the material, preventing impurities from clogging or damaging the metering pump 42 or entering the constant temperature sealed conductivity cell 43, thus avoiding affecting the accuracy of subsequent sampling and testing.

[0029] Once the base material and various components inside the mixing tank 11 are fully mixed according to a preset ratio and reach a stable state after the auxiliary component 5 is activated, the sampling component 4 begins the automatic sampling and testing process: the controller issues a sampling command, activating the metering pump 42 fixed on the mounting plate 41 on the support 3. The metering pump 42 extracts the sample according to the preset sampling flow rate through the sampling tube 45 fixedly installed inside the arc-shaped side wall of the mixing tank 11 (the bottom opening of the sampling tube 45 is close to the upper surface of the bottom of the mixing tank 11, allowing for the extraction of the uniformly mixed bottom layer material). The sample is then transported through the bent tube 46 to the temporary storage tank 44 fixed inside the top of the support 3. The temporary storage tank 44 provides a stable settling space for the sample. After a period of settling, the bubbles generated by stirring in the sample fully rise and dissipate, effectively eliminating the impact of bubbles on subsequent conductivity and attenuation rate. Interference in the detection; after the bubbles are eliminated, the sampling valve 48 at the top of the inclined tube 47 is opened. The sampling valve 48 precisely adjusts the sample delivery volume according to the preset detection dose, and smoothly introduces the target dose of sample into the constant temperature sealed conductivity cell 43 on the mounting plate 41. The detachable loading container inside the constant temperature sealed conductivity cell 43 receives the sample. The conductivity and attenuation rate of the sample are accurately detected by the internal detection module, realizing an integrated process of automatic sampling, fully automatic sealed transmission and accurate detection. The transfer function of the temporary storage tank 44 further ensures the accuracy of the detection results, and the precise adjustment of the sampling valve 48 improves the controllability of the detection dose. After the detection is completed, the sample is cleaned by manually disassembling and assembling the loading container inside the constant temperature sealed conductivity cell 43, which facilitates the sampling and detection of subsequent batches.

[0030] Once the constant-temperature sealed conductivity cell 43 completes the test and feeds the test data back to the controller, and the controller determines that the conductivity, decay rate, and other indicators of the mixture meet the preset standards, the controller issues a finished product output command, opens the electromagnetic regulating valve 69 on the discharge port 68 at the bottom of the mixing tank 11, and transports the qualified blended finished fuel through the discharge port 68 and pipeline to the finished product collection equipment, completing the entire process of aviation fuel blending, impurity filtration, automatic sampling, accurate testing, and finished product output; if the test results do not meet the preset standards, the equipment will issue a prompt signal and close the electromagnetic regulating valve 69 at the discharge port 68. After the staff checks and adjusts, the blending and testing process is repeated. The entire process is controlled by the controller's PLC control protocol to achieve the coordinated work of various electrical components, improving the practicality, operational reliability, and production efficiency of the equipment, while ensuring the accuracy of the test data.

[0031] All electrical components mentioned in this application are electrically connected to the controller and 220V AC mains power. The controller is a conventional and known device that can control the metering pump 42, the constant temperature sealed conductivity cell 43, the sampling valve 48, the heater 52, the geared motor 61, and the electromagnetic regulating valve 69. The signal interaction of each component adopts the PLC control protocol commonly used in industrial equipment, which is common knowledge to those skilled in the art and can be implemented without further detailed description. The control logic and signal interaction method are existing technologies and will not be described in detail here. The standard parts used in this application can all be purchased from the market. The specific connection methods of each part are all conventional methods such as riveting and welding that are mature in the prior art. The standard parts all adopt conventional models in the prior art. The circuit connection adopts conventional connection methods in the prior art and will not be described in detail here.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An automatic sampling device for aviation fuel testing, comprising a fixed frame (1), a vertical frame (2), and a support (3), wherein a mixing tank (11) is fixedly mounted on the top of the fixed frame (1), and a tank lid (12) is fixedly mounted on the top sealing flange of the mixing tank (11), characterized in that: The fixing frame (1) is provided with a sampling component (4) on its outside, and the sampling component (4) includes a mounting plate (41). The mounting plate (41) is fixedly mounted on the bracket (3). A metering pump (42) and a constant temperature sealed conductivity cell (43) are fixedly mounted on the top of the mounting plate (41). A temporary storage tank (44) is fixedly mounted inside the top of the bracket (3). One end of a sampling tube (45) is fixedly mounted inside the arc-shaped sidewall at the top of the mixing tank (11). The output end of the sampling tube (45) is fixedly connected to the input end of the metering pump (42). A bent pipe (46) is fixedly mounted between the output end of the metering pump (42) and the input end of the temporary storage tank (44). An inclined pipe (47) is fixedly mounted between the output end of the temporary storage tank (44) and the input end of the constant temperature sealed conductivity cell (43). A sampling valve (48) is provided at the top of the inclined pipe (47).

2. The automatic sampling device for aviation fuel testing according to claim 1, characterized in that: The bottom opening of the sampling tube (45) is close to the upper surface of the bottom of the mixing container (11).

3. The automatic sampling device for aviation fuel testing according to claim 1, characterized in that: The constant temperature sealed conductivity cell (43) has a detachable loading container inside for receiving the input sample.

4. The automatic sampling device for aviation fuel testing according to claim 1, characterized in that: An auxiliary component (5) is also provided on the outside of the fixing frame (1). The auxiliary component (5) includes a disc (51), which is integrally formed at the bottom center of the mixing barrel (11).

5. The automatic sampling device for aviation fuel testing according to claim 4, characterized in that: A heater (52) is placed inside the fixed frame (1). A heat-conducting roller (53) is fixedly installed at the output end of the heater (52). A heat-conducting plate (54) is integrally formed at the top of the heat-conducting roller (53). A heat-conducting ring (55) is snapped into the inside of the heat-conducting plate (54). A mounting bracket (56) is fixedly installed at the top of the heat-conducting roller (53). The mounting bracket (56) is fixedly installed at the bottom of the mixing barrel (11) by fasteners. The top of the mounting bracket (56) is attached to the bottom of the heat-conducting ring (55).

6. The automatic sampling device for aviation fuel testing according to claim 5, characterized in that: Multiple sets of heat-conducting plates (54) and mounting brackets (56) are provided, and the multiple sets of heat-conducting plates (54) and mounting brackets (56) are arranged in an equally spaced staggered circumferential array with the center of the circular cross section of the heat-conducting roller (53) as the array center. Multiple sets of heat-conducting rings (55) are provided, and the multiple sets of heat-conducting rings (55) are arranged in a coaxial ring, with the diameter gradually increasing from the inside to the outside.

7. The automatic sampling device for aviation fuel testing according to claim 4, characterized in that: The bottom end of the sampling tube (45) is fitted with a filter cartridge (57).

8. The automatic sampling device for aviation fuel testing according to claim 1, characterized in that: A mixing component (6) is also provided outside the fixed frame (1). The mixing component (6) includes a geared motor (61). The geared motor (61) is fixedly installed on the vertical frame (2). The output end of the geared motor (61) is fixedly installed with the top of the stirring shaft (62) through a coupling. The stirring shaft (62) is rotatably installed inside the center of the bucket cover (12) through a sealed bearing (63). The bottom end of the stirring shaft (62) is fixedly installed with a stirring paddle (64) and an auger paddle (65) from top to bottom. A breathing valve (66) is provided inside the bucket cover (12). The output end of the breathing valve (66) is connected to the input end of the waste gas recovery equipment through a pipeline.

9. The automatic sampling device for aviation fuel testing according to claim 8, characterized in that: The mixing tank (11) has multiple sets of feed pipes (67) fixedly installed on its arc-shaped sidewall. The input ends of the multiple sets of feed pipes (67) are respectively connected to the output ends of the feeding equipment for the base material and the various component materials through pipelines. The bottom output end of the mixing tank (11) is fixedly installed with a discharge port (68). The output end of the discharge port (68) is connected to the input end of the finished product collection equipment through pipelines.

10. The automatic sampling device for aviation fuel testing according to claim 9, characterized in that: Electromagnetic regulating valves (69) are provided on the discharge port (68) and the multiple sets of feed pipes (67).

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