Skid-mounted fuel filling equipment with double-layer structure

By designing a pressure stabilization mechanism in the fuel filling equipment, using liquid flow to automatically balance the air pressure inside and outside the filling box, and adjusting the spacing between the oil outlet pipe and the bifurcation pipe, the problem of equipment deformation and liquid leakage due to different air pressure is solved, and the improvement is achieved Equipment safety, durability and filling efficiency.

CN119461223APending Publication Date: 2025-02-18HENAN YINGGAO ENERGY TECH CO LTD
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Patent Information

Application Number
CN202411596980.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-11
Publication Date
2025-02-18

AI Technical Summary

Technical Problem

During the liquid flow, existing fuel filling equipment is prone to deformation and damage caused by differences in internal and external air pressure, and insufficient sealing of the interface leads to liquid leakage, causing waste and safety hazards.

Method used

A skid-mounted double-layer structure fuel filling equipment is designed, and the pressure stabilization mechanism is used to trigger the telescopic rod through the flow of liquid, driving the baffle to guide the gas flow, realizing the automatic balance of the air pressure inside and outside the filling box, and adjusting the oil outlet pipe through the flow of gas The spacing between the fork tube prevents liquid from flowing out.

Benefits of technology

Effectively prevent equipment deformation and damage caused by air pressure differences, improve equipment safety and durability, reduce liquid waste, improve filling efficiency and liquid control accuracy.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of filling equipment, in particular to skid-mounted double-layer structure fuel filling equipment which comprises a base, a filling box, an oil inlet, an oil outlet pipe, a bifurcated pipe and a pressure stabilizing mechanism, the filling box is mounted on the base, the oil inlet is mounted above the filling box, the oil outlet pipe is mounted on the side face of the filling box, and the bifurcated pipe is mounted at one end of the oil outlet pipe; a pressure stabilizing mechanism is mounted above the oil outlet pipe; the pressure stabilizing mechanism triggers a telescopic rod to stretch out and draw back through flowing of liquid, the telescopic rod drives a baffle to move vertically, the baffle moving vertically enables gas to flow in a stabilizing hole, the flowing gas drives a transmission gear to rotate, the rotating transmission gear drives a transmission rope to rotate through a driven gear, and the transmission rope is driven by the driven gear to rotate. The rotating transmission rope drives the transmission rod to rotate in one direction through transmission of the bevel gear, the rotating transmission rod drives the adjusting gear in the oil outlet pipe to rotate, and therefore the distance between the oil outlet pipe and the bifurcated pipe is shortened through the rotating adjusting gear.
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Description

Technical Field

[0001] The invention relates to the technical field of filling equipment, and in particular to a skid-mounted double-layer structure fuel filling equipment. Background Art

[0002] The skid-mounted double-layer structure fuel filling equipment is a new type of equipment used for fuel filling. It is widely used in the filling and transportation of fuels such as oil and natural gas. This type of equipment is convenient, flexible and efficient, and plays an important role in improving filling efficiency and safety.

[0003] During the operation of the fuel filling equipment, the flow of liquid will cause changes in the internal air pressure. When the liquid flows quickly or is affected by external factors, there may be a large difference between the internal and external air pressures of the equipment. This air pressure imbalance will have a negative impact on the filling equipment itself. Especially when the internal air pressure is too high and the external air pressure is low, the surface of the equipment will be subjected to internal pressure, causing the equipment to swell or deform; on the contrary, when the internal air pressure is low and the external air pressure is high, the external pressure may squeeze the equipment and cause it to be damaged. Long-term air pressure imbalance may even cause fatigue in the equipment structure and shorten its service life.

[0004] In addition, the large difference in internal and external air pressure will also aggravate the sealing problem at the interface between the filling equipment and the external connecting pipe. Due to the mismatch of air pressure, the sealing of the interface may be damaged, resulting in liquid leakage and fuel waste. Especially during the filling process, when the liquid flows at a fast speed, if the sealing of the interface is insufficient, the fuel is easy to leak, which not only wastes resources, but also may cause environmental pollution or fire and other safety hazards.

[0005] In view of the above situation, in order to overcome the above technical problems, the present invention designs a skid-mounted double-layer structure fuel filling equipment to solve the above technical problems. Summary of the invention

[0006] The technical purpose to be achieved by the present invention is: a skid-mounted double-layer structure fuel filling equipment in the present invention keeps the air pressure inside and outside the equipment balanced through the flow of gas, and drives the pipeline at the interface to be tighter through the flow of gas, thereby avoiding the waste caused by the outflow of liquid.

[0007] In order to achieve the above technical objectives, the present invention provides the following technical solutions: The present invention provides a skid-mounted double-layer structure fuel filling equipment, which includes a base, a filling box and an oil inlet, and also includes an oil outlet pipe, a bifurcated pipe and a pressure stabilizing mechanism, wherein the filling box is fixedly installed above the base, the oil inlet is installed above the filling box, the oil outlet pipe is installed on the side of the filling box, the bifurcated pipe is installed at one end of the outer side of the oil outlet pipe, and the pressure stabilizing mechanism is installed above the oil outlet pipe; the pressure stabilizing mechanism triggers the telescopic rod to extend and retract through the flow of liquid, the telescopic rod drives the baffle to move vertically, the vertically moving baffle causes gas to flow from the stabilizing hole, the flowing gas drives the transmission gear to rotate, the rotating transmission gear drives the transmission rope to rotate through the driven gear, the rotating transmission rope is driven by the bevel gear, so that the transmission rod rotates in one direction, the rotating transmission rod drives the adjusting gear in the oil outlet pipe to rotate, so that the rotating adjusting gear shortens the distance between the oil outlet pipe and the bifurcated pipe.

[0008] Through the design of the pressure stabilizing mechanism, when the liquid flows, the telescopic rod is triggered to drive the baffle, thereby guiding the gas to flow through the stabilizing hole, and realizing the automatic balance of the air pressure inside and outside the filling box. This effectively prevents the deformation of the filling box caused by the internal and external pressure difference, and improves the safety and durability of the equipment; the distance between the oil outlet pipe and the bifurcated pipe is adjusted according to the gas flow to avoid the loss of liquid through the gap between the two, thereby reducing waste. This reduction in distance improves the liquid control accuracy of the filling box, helps to improve the filling efficiency and reduce losses. The present invention uses the kinetic energy of the gas to drive each component, without the need for an additional power source, thereby reducing energy consumption and achieving high efficiency and energy saving. This design is both economical and environmentally friendly, and is suitable for promotion and use in different environments. Through the linkage of a series of components such as transmission gears, transmission ropes, bevel gears, etc., the equipment can automatically adjust the flow of the oil outlet pipe and the position of the bifurcated pipe, ensuring that the filling box can effectively prevent liquid loss under different working conditions and improve the safety of the equipment.

[0009] The pressure stabilizing mechanism includes a stabilizing hole, a filter, a transmission gear, a fixed block, a transmission rope, a driven rod, a transition bevel gear, a driven bevel gear and a transmission rod. A stabilizing hole is opened on the refueling tank above the oil outlet pipe, and a filter is installed inside the stabilizing hole. A transmission gear is installed on the left side of the filter. A support rod is installed in the middle array of the transmission gear, and a fan is installed on the support rod in the array. A driven gear is meshed below the transmission gear, and a rotating rod is installed on the axis of the driven gear. Two fixed blocks are installed below the driven rod, and the fixed block is located inside the refueling tank, and a transmission rope is installed on the rotating rod. The driven rod is installed on the other end of the transmission rope, and a transition bevel gear is installed at the lower right side of the driven rod, a fixed shaft is installed at the axis of the transition bevel gear, a driven bevel gear is meshed on the right side of the transition bevel gear, and a transmission rod is installed on the axis of the driven bevel gear.

[0010] The stabilizing hole and filter design of the pressure stabilizing mechanism allow the gas to be filtered when entering the filling box, avoiding the entry of external impurities. This achieves the balance of air pressure inside the filling box while improving the cleanliness of gas flow, making the inside of the filling box clean. The fan installed on the transmission gear uses the power of liquid flow to increase the smoothness of air flow, which helps to balance the air pressure more quickly and stably. At the same time, the presence of the fan can reduce the resistance of gas flow and ensure the efficient operation of the transmission equipment. The transmission rope closely links multiple transmission components and supports the transmission mechanism through the fixed block to achieve flexible and stable transmission. This design ensures the smooth operation of each component in a complex environment, and can be easily adjusted and repaired when necessary. The design of the transition bevel gear and the driven bevel gear can efficiently transmit the vertical and horizontal forces to the transmission rod to meet the transmission requirements in space. The use of bevel gears effectively reduces the energy loss in traditional transmission mechanisms and ensures the stability of transmission.

[0011] A telescopic rod is installed between the fixed blocks inside the filling box, and a baffle for sealing the stabilization hole is fixedly installed above the telescopic rod, and the cross-sectional shape of the baffle is U-shaped.

[0012] By installing a retractable telescopic rod in the filling box and fixing a U-shaped baffle on top of it, the stabilization hole can be sealed more effectively. When the liquid flow triggers the telescopic rod to extend or retract, the U-shaped baffle automatically opens or closes the stabilization hole as needed, thereby adjusting the gas inflow or outflow, ensuring the balance of air pressure inside and outside the filling box, and effectively avoiding deformation of the box. The baffle adopts a U-shaped cross-section design, which has a larger contact surface with the stabilization hole and a better sealing effect. The U-shaped design can also reduce the risk of air leakage and improve the sealing performance and overall stability of the equipment. The telescopic rod is installed between the fixed blocks, which has a stable supporting effect. It is not only simple in structure, but also responsive, reducing the complexity of operation. Since the telescopic rod is located between the fixed blocks, it can play a certain shock-absorbing role during the liquid flow process, preventing the liquid flow from causing unnecessary impact on the internal structure of the filling box. At the same time, the fixed blocks and telescopic rods work together to improve the durability and stability of the overall device. This energy-saving design reduces energy consumption, making the device environmentally friendly. The modular design of the fixed blocks, telescopic rods and U-shaped baffles allows each component to be installed or replaced independently, which is easy to maintain. If a component is worn or damaged, it can be repaired quickly, reducing maintenance costs.

[0013] A transmission bevel gear is fixedly installed on a right section of the driven rod, and the transmission bevel gear is meshed with the transition bevel gear. A limit block is installed inside the right side of the transmission bevel gear, and the cross-sectional shape of the limit block is U-shaped. An extrusion spring is clamped inside the U-shaped limit block, and a sliding block is clamped on the other end of the extrusion spring. The cross-sectional shape of the sliding block is a right-angled trapezoid, and a transmission rod is provided at the axis of the transmission bevel gear.

[0014] The meshing design of the transmission bevel gear and the transition bevel gear realizes efficient transmission and direction conversion of power, which enables the power caused by the flow of liquid inside the filling box to be accurately transmitted to components in different directions, improving the response speed and flexibility of the transmission mechanism. A U-shaped limit block is installed inside the transmission bevel gear, and flexible clamping is achieved through the extrusion spring and the sliding block. When the transmission mechanism is subjected to external impact or load fluctuation, the spring can play a buffering role to prevent the gear from being subjected to excessive impact, thereby protecting the integrity of the transmission mechanism and extending its service life. The elastic force provided by the extrusion spring enables the sliding block to maintain appropriate pressure during the transmission process and automatically reset after the transmission stops or the force disappears. The cross-section of the sliding block is a right-angled trapezoid, which can be more firmly clamped in the limit block to avoid displacement or slippage during the transmission process. The right-angled trapezoidal design increases the stability of the sliding block, allowing it to remain in the predetermined position during frequent movements, improving the accuracy of the transmission. The transmission rod is located at the axis of the transmission bevel gear, which can effectively transmit the rotation of the transmission bevel gear to subsequent components. The setting of the axis position enables the transmission rod to obtain the best torque transmission efficiency, reduces unnecessary energy loss, and ensures the efficient operation of the entire transmission mechanism. Through the cooperation of the limit block, extrusion spring and sliding block, the shock absorption effect of the transmission mechanism is achieved, especially when the mechanism starts or stops, it can effectively buffer the mechanical impact and protect key components from wear. This design improves the durability of the mechanism under high load or frequent operation environment.

[0015] The transition bevel gear is meshed with the driven bevel gear. A support block is installed on the surface of the driven bevel gear close to the transmission bevel gear. The cross-sectional shape of the support block is U-shaped. A support spring is clamped inside the support block. The other end of the support spring is clamped with a transmission block. The cross-sectional shape of the transmission block is a right-angled trapezoid. The shape of the transmission block and the shape of the sliding block have the same inclination direction.

[0016] The U-shaped structure of the support block can firmly accommodate the support spring and provide good support for the transmission mechanism. The support spring plays a buffering role in the transmission process, which can effectively absorb vibration and impact force, thereby reducing the wear of the gear and extending the service life of the transmission mechanism. The support spring can automatically adjust its elastic force according to the load of the transmission mechanism to ensure that appropriate support force is provided when the load changes. When the external pressure disappears or decreases, the support spring will automatically reset and restore the transmission mechanism to its initial position, thereby realizing the automatic reset function and ensuring the continuous and stable operation of the device. The transmission block adopts a right-angle trapezoidal cross-section, which is the same shape and inclination direction as the sliding block. Such a design can make the transmission block fit the sliding block precisely, increase the contact area, improve the stability and accuracy of the transmission, reduce the possibility of misalignment or slippage, and ensure accurate transmission of the transmission force. The combination of the support block and the support spring effectively supports the driven bevel gear, so that it maintains a stable meshing state with the transition bevel gear. Even under higher loads, the support device can avoid relative displacement between the meshing gears, improving the reliability and accuracy of the transmission mechanism. The modular design of the support block, support spring and transmission block enables it to be independently disassembled, repaired or replaced in the mechanism. When a part of the transmission mechanism is worn or fails, maintenance personnel can quickly replace the specific part, reducing maintenance difficulty and downtime, and reducing maintenance costs.

[0017] Two limit cylinders are installed on the transmission rod at the axis of the driven bevel gear and the transmission bevel gear, and the two limit cylinders are respectively installed in a row of the transmission block and the sliding block. The limit cylinders are installed with helical teeth, and the inclined surfaces of the helical teeth are arranged face to face with the inclined surfaces of the transmission block and the sliding block. The other end of the transmission rod is installed on the oil outlet pipe.

[0018] The limit cylinder is installed in a row of the transmission block and the sliding block, which can play a precise limiting role in the transmission process to avoid excessive displacement. The precise positioning of the limit cylinder ensures that the transmission rod is always within the control range during the rotation process, making the operation of the transmission mechanism more stable and accurate. The helical teeth on the limit cylinder are arranged face to face with the inclined surfaces of the transmission block and the sliding block, which can reduce direct friction during the transmission process and improve the transmission kinetic energy. The inclined surface of the helical teeth and the inclined surfaces of the transmission block and the sliding block are arranged face to face, which is convenient for transmitting kinetic energy to the transmission rod, so that the rotation direction of the transmission rod always rotates in one direction. The design of the arrangement of the helical teeth and the inclined surface has a certain buffering effect during the transmission process, effectively absorbing and dispersing the vibration and impact force during the transmission process. The design of the helical teeth can not only transmit kinetic energy, but also effectively reduce the wear between the transmission rod and the gear. This low-wear design enables the equipment to maintain a good transmission effect after long-term use, which helps to extend the service life of the overall device. The two limit cylinders control the movement of the transmission block and the sliding block respectively, so that the mechanism can automatically adjust its transmission state according to different working conditions. This flexibility enables the device to perform stably when dealing with different loads and liquid flows, and is suitable for precise transmission and flow control needs in a variety of industrial scenarios.

[0019] A sensor for controlling the extension and retraction of the telescopic rod is installed inside the oil outlet pipe, a fixed cylinder is installed on the side of the connection of the oil outlet pipe, the fixed cylinder is composed of two arc cylinders, a supporting gear is installed inside the upper end of the fixed cylinder, and the axis of the supporting gear is connected to a transmission rod, an adjusting gear is installed inside the lower end of the fixed cylinder, the adjusting gear is meshed with the supporting gear, an adjusting groove is provided in the internal array of the adjusting gear, an adjusting spring is clamped in the internal array of the adjusting groove, an adjusting block is clamped in the other end of the adjusting spring, the cross-sectional shape of the adjusting block is an arc, and the right end of the adjusting block is chamfered.

[0020] The sensor installed inside the oil outlet pipe can monitor and control the extension and retraction of the telescopic rod in real time, and adjust the start and stop of the transmission mechanism as needed. The sensor enables the mechanism to have intelligent control capabilities, can more flexibly adapt to the flow requirements of the fluid, and achieve precise flow management. The fixed cylinder consists of two arc cylinders, which are compact and stable, providing stronger support to ensure that the transmission rod and gear mechanism remain stable during operation. The double arc design also has better impact resistance, enabling it to maintain accuracy and durability under high-frequency operation. The meshing design of the support gear and the adjustment gear provides stable transmission support to ensure that the transmission rod operates smoothly during the process of controlling the flow of the oil outlet pipe. By adjusting the rotation of the gear, the support gear is linked to effectively transmit power and avoid gear offset and wear. The adjustment spring and adjustment block inside the adjustment slot can be automatically adjusted according to the load and pressure, so that the mechanism can maintain stable operation under different flow and pressure conditions. The adjustment spring can automatically provide appropriate rebound force to ensure the precise positioning of the adjustment block while avoiding excessive wear. The arc-shaped cross-section and chamfer design of the adjustment block not only increase the contact area with the gear, but also reduce the friction during the transmission process. The chamfered structure makes the adjustment block smoother during transmission and adjustment, avoiding jamming, thereby extending the service life of the bifurcation pipe and the oil outlet pipe. The linkage of the support gear, adjustment gear and adjustment block makes the flow control of the oil outlet pipe more automated and efficient. The mechanism can automatically adjust under different flow requirements to achieve more accurate liquid oil output control, reduce the need for manual intervention, and reduce the difficulty of operation. Components such as sensors, fixed cylinders, support gears, adjustment gears, adjustment springs and adjustment blocks are all modularly designed and can be disassembled and replaced independently. When a component is worn or fails, the faulty component can be replaced separately to reduce maintenance time and cost. This design achieves high-precision control and stability adjustment of the oil outlet pipe flow, avoids the impact of flow fluctuations on the performance of the mechanism, and is suitable for occasions with high requirements for flow control.

[0021] The end of the bifurcated pipe close to the oil outlet pipe is composed of two pipes slidingly connected, and the side array of the bifurcated pipe is provided with a fixing groove, the cross-sectional shape of the fixing groove is rectangular, and the ratio of the length of the fixing groove to the length of the adjustment block is 5:4.

[0022] The two pipes in the bifurcated pipe are connected by sliding, so that they can stretch or slide freely at the connection. This design is easy to adjust to prevent the angle of the bifurcated pipe from changing, and at the same time increases the versatility of the equipment. The sliding connection structure allows the spacing between the bifurcated pipe and the oil outlet pipe to be accurately adjusted, so that the two fit closely, reducing the leakage of liquid caused by the unsealed connection, ensuring the stability of the flow output, and effectively reducing liquid waste. The rectangular fixing groove on the side of the bifurcated pipe can accommodate the adjustment block and maintain its position, preventing the sliding connection from loosening or shifting during the adjustment process. The fixing groove provides a stable fixed position for the adjustment block, improving the reliability and stability of the bifurcated pipe connection. The design of the length ratio of the fixing groove to the adjustment block is 5:4, so that the adjustment block can be tightly embedded in the fixing groove, while having a certain amount of moving space, providing good adjustment accuracy. This proportional design allows the adjustment block to move flexibly while maintaining the fixing effect, achieving a better fine-tuning effect. The proportional design of the rectangular fixing groove and the adjustment block ensures stability during the operation of the equipment, avoids loosening and displacement due to vibration, and helps to extend the service life of the equipment and improve the overall stability. The sliding connection structure makes it easy to separate the bifurcated pipe and the oil outlet pipe during maintenance or replacement, and the modular design of the fixing groove and the adjustment block makes it easy to replace the adjustment block separately or adjust its position. The relevant parts can be quickly disassembled and replaced during maintenance, which improves maintenance efficiency and reduces downtime. The sliding connection design of the bifurcated pipe and the oil outlet pipe reduces the friction caused by frequent adjustments and extends the service life of the connection parts. The close fit between the fixing groove and the adjustment block reduces wear caused by vibration or friction and improves overall durability.

[0023] The beneficial effects of the present invention are as follows: 1. When the liquid flows through the pressure stabilizing mechanism, the telescopic rod is triggered to drive the baffle, guiding the gas to flow through the stabilizing hole, thereby automatically balancing the air pressure inside and outside the filling box, avoiding deformation of the filling box due to the pressure difference between the inside and outside, improving the safety and durability of the equipment, and the spacing between the oil outlet pipe and the branch pipe is automatically adjusted according to the gas flow to prevent the liquid from leaking from the gap and reduce waste; reducing the spacing improves the liquid control accuracy of the filling box, improves the filling efficiency and reduces losses.

[0024] 2. The U-shaped baffle fixed above the telescopic rod can seal the stabilizing hole more effectively. The liquid flow triggers the telescopic action of the telescopic rod. The U-shaped baffle automatically opens or closes the stabilizing hole according to demand, thereby adjusting the gas in and out, ensuring the balance of air pressure inside and outside the filling box, and effectively preventing the box from deforming. The cross-sectional design of the U-shaped baffle increases the contact area with the stabilizing hole, which has a better sealing effect, reduces the risk of air leakage, and improves the sealing performance and overall stability of the equipment.

[0025] 3. The two pipes in the bifurcated pipe are connected by sliding, so that the connection can be freely expanded or slid, which is convenient for adjusting the angle of the bifurcated pipe, preventing deviation, and increasing the versatility of the equipment. The sliding connection structure allows the spacing between the bifurcated pipe and the oil outlet pipe to be precisely adjusted, so that the two fit closely, reducing liquid leakage caused by unsealed connection, ensuring the stability of flow output, and effectively reducing liquid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] The above and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which: Figure 1 It is an overall schematic diagram of the present invention; Figure 2 is a schematic diagram of the interior of the stabilizing hole of the present invention; Figure 3 It is a schematic diagram of the transmission gear of the present invention; Figure 4 is a schematic diagram of a telescopic rod of the present invention; Figure 5 It is a schematic diagram of the transmission rope of the present invention; Figure 6 It is a schematic diagram of the transmission bevel gear of the present invention; Figure 7 is a schematic diagram of the driven bevel gear of the present invention; Figure 8 It is a schematic diagram of the interior of the oil outlet pipe of the present invention; Fig. 9 It is an enlarged schematic diagram of the oil outlet pipe of the present invention.

[0028] In the figure: 1, base; 2, filling box; 3, oil inlet; 4, oil outlet pipe; 41, sensor; 42, fixing cylinder; 43, supporting gear; 44, adjusting gear; 45, adjusting slot; 46, adjusting spring; 47, adjusting block; 5, bifurcated pipe; 51, fixing slot; 6, pressure stabilizing mechanism; 61, stabilizing hole; 62, filter; 63, transmission gear; 631, supporting rod; 632, fan; 633, driven gear; 634, Rotating rod; 64, fixed block; 641, telescopic rod; 642, baffle; 65, transmission rope; 66, driven rod; 661, transmission bevel gear; 662, limit block; 663, extrusion spring; 664, sliding block; 67, transition bevel gear; 671, fixed shaft; 68, driven bevel gear; 681, support block; 682, support spring; 683, transmission block; 69, transmission rod; 691, limit cylinder; 692, bevel gear. DETAILED DESCRIPTION

[0029] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] like Figure 1 and 2 As shown, a skid-mounted double-layer fuel filling device provided by the present invention comprises a base 1, a filling box 2 and an oil inlet 3, and also comprises an oil outlet pipe 4, a bifurcated pipe 5 and a pressure stabilizing mechanism 6. The filling box 2 is fixedly installed above the base 1, the oil inlet 3 is installed above the filling box 2, the oil outlet pipe 4 is installed on the side of the filling box 2, the bifurcated pipe 5 is installed at one end of the outer side of the oil outlet pipe 4, and the pressure stabilizing mechanism 6 is installed above the oil outlet pipe 4; the pressure stabilizing mechanism 6 triggers the telescopic rod 641 to be extended and retracted by the flow of liquid, and the telescopic extension rod 641 is retracted and retracted. The retracting rod 641 drives the baffle 642 to move vertically, and the vertically moving baffle 642 allows the gas to flow from the stabilizing hole 61. The flowing gas drives the transmission gear 63 to rotate, and the rotating transmission gear 63 drives the transmission rope 65 to rotate through the driven gear 633. The rotating transmission rope 65 is driven by the bevel gear to make the transmission rod 69 rotate in one direction. The rotating transmission rod 69 drives the adjusting gear 44 in the oil outlet pipe 4 to rotate, so that the rotating adjusting gear 44 shortens the distance between the oil outlet pipe 4 and the branch pipe 5.

[0031] When the liquid flows through the pressure stabilizing mechanism 6, the telescopic rod 641 is triggered to drive the baffle 642, guiding the gas to flow through the stabilizing hole 61, thereby automatically balancing the internal and external air pressure of the filling box 2, avoiding deformation of the filling box 2 due to the internal and external pressure difference, and improving the safety and durability of the equipment. The spacing between the oil outlet pipe 4 and the bifurcated pipe 5 is automatically adjusted according to the gas flow to prevent the liquid from leaking from the gap and reduce waste; reducing the spacing improves the liquid control accuracy of the filling box 2, improves the filling efficiency and reduces losses. The present invention uses gas kinetic energy to drive each component, does not require an additional power source, thereby reducing energy consumption, and has the characteristics of high efficiency and energy saving. This design is both economical and environmentally friendly, and is suitable for promotion and application in different environments. Through the linkage of components such as the transmission gear 63, the transmission rope 65 and the bevel gear, the equipment can automatically adjust the flow of the oil outlet pipe 4 and the position of the bifurcated pipe 5, ensuring that the filling box 2 effectively prevents liquid loss under various working conditions, and further improves the safety and service life of the equipment.

[0032] like Figure 2 , 3 , 4, 5, 6 and 7, the pressure stabilizing mechanism 6 includes a stabilizing hole 61, a filter screen 62, a transmission gear 63, a fixing block 64, a transmission rope 65, a driven rod 66, a transition bevel gear 67, a driven bevel gear 68 and a transmission rod 69. A stabilizing hole 61 is provided on the refueling tank above the oil outlet pipe 4, a filter screen 62 is installed inside the stabilizing hole 61, a transmission gear 63 is installed on the left side of the filter screen 62, a support rod 631 is installed in the middle array of the transmission gear 63, and a fan 632 is installed on the support rod 631 of the array, and a fan 632 is meshed below the transmission gear 63. A driven gear 633, a rotating rod 634 is installed on the axis of the driven gear 633, two fixed blocks 64 are installed below the driven rod 66, the fixed blocks 64 are located inside the filling box 2, and a transmission rope 65 is installed on the rotating rod 634, a driven rod 66 is installed on the other end of the transmission rope 65, a transition bevel gear 67 is installed at the lower right of the driven rod 66, a fixed shaft 671 is installed at the axis position of the transition bevel gear 67, a driven bevel gear 68 is meshingly installed on the right side of the transition bevel gear 67, and a transmission rod 69 is installed on the axis of the driven bevel gear 68.

[0033] The pressure stabilizing mechanism 6 is designed with a stabilizing hole 61 and a filter 62, so that the gas is effectively filtered when entering the filling box 2, preventing the entry of external impurities, achieving the balance of air pressure in the filling box 2, and improving the cleanliness of the gas, keeping the environment in the box clean. The fan 632 installed on the transmission gear 63 uses the power of liquid flow to enhance the smoothness of the air flow, thereby balancing the air pressure more quickly and stably. At the same time, the presence of the fan 632 reduces the resistance to gas flow and ensures the efficient operation of the transmission device. The transmission rope 65 closely links multiple transmission components and supports the transmission mechanism through the fixed block 64 to ensure that the transmission process is both flexible and stable. This design ensures that each component runs smoothly in a complex environment and is easy to adjust and maintain when necessary. The design of the transition bevel gear 67 and the driven bevel gear 68 can effectively transmit the vertical and horizontal forces to the transmission rod 69 to meet the spatial transmission requirements. The use of bevel gears significantly reduces the energy loss of traditional transmission mechanisms and ensures the stability and efficiency of transmission.

[0034] like Figure 2 and 4 As shown, a telescopic rod 641 is installed between the fixed blocks 64 inside the filling box 2, and a baffle 642 for sealing the stabilization hole 61 is fixedly installed above the telescopic rod 641, and the cross-sectional shape of the baffle 642 is U-shaped.

[0035] A retractable telescopic rod 641 is installed in the filling box 2, and a U-shaped baffle 642 is fixed on it, which can more effectively seal the stabilizing hole 61. The flow of liquid triggers the telescopic action of the telescopic rod 641, and the U-shaped baffle 642 automatically opens or closes the stabilizing hole 61 according to demand, thereby adjusting the gas in and out, ensuring the balance of air pressure inside and outside the filling box 2, and effectively preventing the box body from deforming. The cross-sectional design of the U-shaped baffle 642 increases the contact area with the stabilizing hole 61, the sealing effect is better, the risk of air leakage is reduced, and the sealing performance and overall stability of the equipment are improved. The telescopic rod 641 is installed between the fixed blocks 64 to provide stable support, with a simple structure and sensitive response, reducing the complexity of operation. Since the telescopic rod 641 is located between the fixed blocks 64, it plays a certain shock-absorbing role when the liquid flows, preventing the liquid flow from causing unnecessary impact on the internal structure of the filling box 2. The fixed blocks 64 and the telescopic rod 641 work together to improve the durability and stability of the entire device. In addition, this energy-saving design reduces energy consumption, giving the device an environmental advantage.

[0036] like Figure 5 , 6As shown in 7, a transmission bevel gear 661 is fixedly installed on a right section of the driven rod 66, and the transmission bevel gear 661 is meshed with a transition bevel gear 67. A limit block 662 is installed inside the right side of the transmission bevel gear 661. The cross-sectional shape of the limit block 662 is U-shaped. An extrusion spring 663 is clamped inside the U-shaped limit block 662. The other end of the extrusion spring 663 is clamped with a sliding block 664. The cross-sectional shape of the sliding block 664 is a right-angled trapezoid, and a transmission rod 69 is provided at the axis of the transmission bevel gear 661.

[0037] The meshing design of the transmission bevel gear 661 and the transition bevel gear realizes efficient transmission and direction conversion of power, so that the power generated by the flow of liquid inside the filling box 2 can be accurately transmitted to components in different directions, and the response speed and flexibility of the transmission mechanism are improved. A U-shaped limit block 662 is installed inside the transmission bevel gear 661, and flexible clamping is achieved through the extrusion spring 663 and the sliding block 664. When the transmission mechanism is subjected to external impact or load fluctuations, the spring plays a buffering role to prevent the gear from being subjected to excessive impact, protect the integrity of the transmission mechanism, and extend its service life. The elastic force provided by the extrusion spring 663 enables the sliding block 664 to maintain appropriate pressure during the transmission process, and automatically resets after the transmission stops or the external force disappears. The sliding block 664 is designed with a right-angled trapezoidal cross-section, so that it can be firmly clamped in the limit block 662 to avoid displacement or slipping during the transmission process. The right-angled trapezoidal design increases the stability of the sliding block 664, allowing it to remain in a predetermined position during frequent movements, thereby improving the transmission accuracy. The transmission rod 69 is located at the axis of the transmission bevel gear 661, effectively transmitting the rotational force of the bevel gear to subsequent components. The setting of the axis position enables the transmission rod 69 to obtain the best torque transmission efficiency, reduce unnecessary energy loss, and ensure the efficient operation of the entire transmission mechanism. Through the coordinated cooperation of the limit block 662, the extrusion spring 663 and the sliding block 664, the shock absorption effect of the transmission mechanism is achieved, especially when starting or stopping, it can effectively buffer mechanical shock and protect key components from wear. This design improves the durability of the mechanism under high load or frequent operation environments.

[0038] like Figure 5 , 6 As shown in 7, the transition bevel gear 67 is meshed with the driven bevel gear 68, and a support block 681 is installed on the side of the driven bevel gear 68 close to the transmission bevel gear 661, and the cross-sectional shape of the support block 681 is U-shaped, and a support spring 682 is clamped inside the support block 681, and a transmission block 683 is clamped at the other end of the support spring 682, and the cross-sectional shape of the transmission block 683 is a right-angled trapezoid, and the shape of the transmission block 683 has the same inclination direction as the shape of the sliding block 664.

[0039] The U-shaped structure of the support block 681 can stably accommodate the support spring 682, providing good support for the transmission mechanism. The support spring 682 plays a buffering role in the transmission process, effectively absorbs vibration and impact, reduces gear wear, and prolongs the service life of the transmission mechanism. The support spring 682 can automatically adjust the elastic force according to the load of the transmission mechanism to ensure that appropriate support is provided when the load changes. When the external pressure disappears or decreases, the support spring 682 automatically resets, so that the transmission mechanism returns to its initial position, thereby realizing the automatic reset function and ensuring the continuous and stable operation of the device. The transmission block 683 is designed as a right-angle trapezoidal cross-section, which coincides with the shape and inclination direction of the sliding block 664. This design allows the transmission block 683 to fit precisely with the sliding block 664, increases the contact area, improves the stability and accuracy of the transmission, reduces the risk of misalignment or slippage, and ensures the accurate transmission of the transmission force. The combination of the support block 681 and the support spring 682 effectively supports the driven bevel gear 68, so that it maintains a stable meshing state with the transition bevel gear. Even under high loads, the support device can still prevent relative displacement between meshing gears, thereby improving the reliability and accuracy of the transmission mechanism. The modular design of the support block 681, the support spring 682 and the transmission block 683 allows them to be independently disassembled, repaired or replaced in the device. When a component of the transmission mechanism is worn or fails, maintenance personnel can quickly replace the corresponding component, reducing maintenance difficulty and downtime, and reducing maintenance costs.

[0040] like Figure 6 and 7 As shown, two limiting cylinders 691 are installed on the transmission rod 69 at the axis of the driven bevel gear 68 and the transmission bevel gear 661. The two limiting cylinders 691 are respectively installed in a row of the transmission block 683 and the sliding block 664. The limiting cylinder 691 is installed with a bevel tooth 692. The inclined surface of the bevel tooth 692 is arranged face to face with the inclined surface of the transmission block 683 and the sliding block 664. The other end of the transmission rod 69 is installed on the oil outlet pipe 4.

[0041] The limit cylinder 691 is installed in the same row of the transmission block 683 and the sliding block 664, which can provide precise limiting effect during the transmission process to prevent excessive displacement. The precise positioning of the limit cylinder 691 ensures that the transmission rod 69 is always within the control range when rotating, so that the transmission mechanism runs more smoothly and accurately. The beveled teeth 692 on the limit cylinder 691 are arranged face to face with the bevels of the transmission block 683 and the sliding block 664, which can reduce direct friction during the transmission process and improve the efficiency of kinetic energy transmission. The inclined surface of the beveled teeth 692 is arranged relative to the bevels of the transmission block 683 and the sliding block 664, which is convenient for transmitting kinetic energy to the transmission rod 69, thereby ensuring that the transmission rod 69 always maintains unidirectional rotation. The design of the beveled teeth 692 and the beveled surface arrangement has a buffering effect during the transmission process, effectively absorbing and dispersing vibration and impact force. The beveled teeth 692 can not only efficiently transmit kinetic energy, but also effectively reduce the wear between the transmission rod 69 and the gear. The low-wear design enables the equipment to maintain a good transmission effect even after long-term use, thereby extending the service life of the overall device. The two limiting cylinders 691 control the movement of the transmission block 683 and the sliding block 664 respectively, so that the mechanism can automatically adjust the transmission state according to different working conditions.

[0042] like Figure 8 and 9 As shown, a sensor 41 for controlling the extension and retraction of the telescopic rod 641 is installed inside the oil outlet pipe 4, and a fixed cylinder 42 is installed on the side of the connection of the oil outlet pipe 4, and the fixed cylinder 42 is composed of two arc cylinders, and a supporting gear 43 is installed inside the upper end of the fixed cylinder 42, and the axis of the supporting gear 43 is connected to the transmission rod 69, and an adjusting gear 44 is installed inside the lower end of the fixed cylinder 42, and the adjusting gear 44 is meshed with the supporting gear 43, and the internal array of the adjusting gear 44 is provided with an adjusting groove 45, and the internal array of the adjusting groove 45 is clamped with an adjusting spring 46, and the other end of the adjusting spring 46 is clamped with an adjusting block 47, and the cross-sectional shape of the adjusting block 47 is an arc shape, and the right end of the adjusting block 47 is set as a chamfer.

[0043] The sensor 41 installed inside the oil outlet pipe 4 can monitor and control the extension and retraction of the telescopic rod 641 in real time, and adjust the start and stop of the transmission mechanism as needed, so that the mechanism has intelligent control capabilities, flexibly adapts to fluid flow requirements, and realizes precise flow management. The fixed cylinder 42 is composed of two arc cylinders, which are compact and stable in structure, provide stronger support, and ensure that the transmission rod 69 and the gear mechanism remain stable during operation. The double arc design also has strong impact resistance, so that it maintains accuracy and durability under high-frequency operation.

[0044] The meshing design of the support gear 43 and the adjustment gear 44 provides a stable transmission support, ensuring that the transmission rod 69 operates smoothly when controlling the flow of the oil outlet pipe 4. By adjusting the rotation of the gear 44, the support gear 43 is linked, which can effectively transmit power and avoid gear offset and wear. The adjustment spring 46 and the adjustment block 47 in the adjustment groove 45 can be automatically adjusted according to the load and pressure, so that the mechanism can maintain stable operation under different flow and pressure conditions. The adjustment spring 46 can automatically provide appropriate resilience to ensure that the adjustment block 47 is accurately positioned to avoid excessive wear. The adjustment block 47 adopts an arc-shaped cross-section and chamfer design, which increases the contact area with the gear and reduces the friction during the transmission process. The chamfered structure makes the adjustment block 47 smoother during transmission and adjustment, avoids jamming, and prolongs the service life of the bifurcated pipe 5 and the oil outlet pipe 4. The linkage of the support gear 43, the adjustment gear 44 and the adjustment block 47 makes the flow control of the oil outlet pipe 4 more automated and efficient. The mechanism can automatically adjust according to different flow requirements to achieve accurate liquid oil output control, reduce manual intervention, and reduce the difficulty of operation.

[0045] like Figure 8 and 9 As shown, the end of the bifurcated pipe 5 close to the oil outlet pipe 4 is composed of two pipes slidably connected, and a side array of the bifurcated pipe 5 is provided with a fixing groove 51, the cross-sectional shape of the fixing groove 51 is rectangular, and the length of the fixing groove 51 and the length of the adjustment block 47 are in a ratio of 5:4.

[0046] The two pipes in the bifurcated pipe 5 are connected by sliding, so that the connection can be freely extended or slid. This design facilitates the adjustment of the angle of the bifurcated pipe 5, prevents deviation, and increases the versatility of the equipment. The sliding connection structure allows the spacing between the bifurcated pipe 5 and the oil outlet pipe 4 to be precisely adjusted, so that the two fit closely, reduce liquid leakage caused by unsealed connection, ensure the stability of flow output, and effectively reduce liquid waste. The rectangular fixing groove 51 on the side of the bifurcated pipe 5 is used to accommodate the adjustment block 47, stabilize its position, and prevent the sliding connection from loosening or deflecting during the adjustment process. The fixing groove 51 provides a stable fixed position for the adjustment block 47, improving the reliability and stability of the connection of the bifurcated pipe 5. The length ratio of the fixing groove 51 to the adjustment block 47 is 5:4, so that the adjustment block 47 can be tightly embedded in the fixing groove 51, while leaving appropriate movement space to achieve a precise adjustment effect. This proportional design not only ensures stability, but also gives the adjustment block 47 a certain flexibility, which is conducive to fine-tuning. The proportional design of the rectangular fixing groove 51 and the adjustment block 47 maintains a stable connection during the operation of the equipment, avoiding loosening or displacement caused by vibration, which helps to extend the service life of the equipment and improve the overall stability. The sliding connection structure also facilitates the separation of the bifurcated pipe 5 from the oil outlet pipe 4 during maintenance or replacement, and the modular design of the fixing groove 51 and the adjustment block 47 facilitates the separate replacement or repositioning of the adjustment block 47. During maintenance, the relevant components can be quickly disassembled and replaced, which improves maintenance efficiency and reduces downtime. The sliding connection design between the bifurcated pipe 5 and the oil outlet pipe 4 reduces the friction caused by frequent adjustments and extends the service life of the connection components. The close fit between the fixing groove 51 and the adjustment block 47 reduces the wear caused by vibration or friction and improves the durability of the overall device.

[0047] During operation of the present invention, when the liquid inside the filling box 2 flows out from the oil outlet pipe 4, the flowing liquid triggers the transmission device, and the sensor 41 transmits a signal to the telescopic rod 641. The telescopic rod 641 is extended and retracted to drive the baffle 642 to move vertically, so that gas flows in the stabilizing hole 61, and the air pressure inside the filling box 2 can be made the same as the air pressure outside, thereby avoiding the deformation of the filling box 2 caused by the air pressure difference between the inside and the outside. The flowing gas drives the transmission gear 63 to rotate through the fan 632, and the rotating transmission gear 63 drives the driven gear 633 to rotate, and the rotating driven gear 633 drives the rotating rod 634 to rotate, and the rotating rotating rod 634 rotates with the transmission rope 65, and the rotating transmission rope 65 drives the driven rod to rotate, and the rotating driven rod 66 drives the transmission bevel gear The wheel 661 rotates clockwise, and the rotating transmission bevel gear 661 drives the transition bevel gear 67 to rotate, and the transition bevel gear 67 drives the driven bevel gear 68 to rotate, and the rotating driven bevel gear 68 squeezes the helical teeth 692 on the limiting cylinder 691 through the transmission block 683, so that the limiting cylinder 691 rotates, and the rotating limiting cylinder 691 drives the transmission rod 69 to rotate, and the rotating transmission rod 69 drives the supporting gear 43 in the fixed cylinder 42 to rotate, and the rotating supporting gear 43 drives the adjusting gear 44 to rotate, and the rotating adjusting gear 44 drives the forked pipe 5 to rotate through the adjusting block 47, and the rotating forked pipe 5 can better reduce the distance between the oil outlet pipe 4, thereby preventing liquid from flowing out from between the forked pipe 5 and the oil outlet pipe 4, thereby causing liquid waste.

[0048] When the staff adds liquid into the interior, the fan 632 rotates in the reverse direction, thereby driving the transmission rope 65 to rotate in the reverse direction, so that the transmission bevel gear 661 will drive the transmission rod 69 to rotate through the sliding block 664, and the rotating transmission rod 69 will drive the supporting gear 43 to rotate, and then the supporting gear 43 drives the bifurcated pipe 5 to move through the adjusting gear 44, thereby preventing the liquid from flowing out from between the bifurcated pipe 5 and the oil outlet pipe 4, thereby causing waste of liquid.

[0049] The foregoing is merely an excerpt from the disclosure that these modifications may be made to the invention in light of the above detailed description. The terms used in the appended claims should not be construed to limit the invention to the specific embodiments disclosed in the specification. Instead, the scope of the invention will be determined entirely by the appended claims, which will be interpreted in accordance with established principles of claim interpretation.

Claims

1. A skid-mounted double-layer fuel filling device, comprising a base (1), a filling box (2) and a fuel inlet (3), characterized in that: The oil pump also comprises an oil outlet pipe (4), a bifurcated pipe (5) and a pressure stabilizing mechanism (6); a filling box (2) is fixedly mounted above the base (1); an oil inlet (3) is mounted above the filling box (2); an oil outlet pipe (4) is mounted on the side of the filling box (2); a bifurcated pipe (5) is mounted on the outer end of the oil outlet pipe (4); and a pressure stabilizing mechanism (6) is mounted above the oil outlet pipe (4); the pressure stabilizing mechanism (6) triggers the telescopic rod (641) to extend and retract through the flow of liquid, and the telescopic rod (641) drives the baffle plate (642) to move vertically. The baffle plate (642) moves vertically, thereby causing gas to flow from the stabilizing hole (61). The flowing gas drives the transmission gear (63) to rotate. The rotating transmission gear (63) drives the transmission rope (65) to rotate through the driven gear (633). The rotating transmission rope (65) drives the transmission rod (69) in one direction through the bevel gear. The rotating transmission rod (69) drives the adjusting gear (44) in the oil outlet pipe (4) to rotate, thereby shortening the distance between the oil outlet pipe (4) and the bifurcated pipe (5).

2. The skid-mounted double-layer fuel filling equipment according to claim 1 is characterized in that: The pressure stabilizing mechanism (6) comprises a stabilizing hole (61), a filter screen (62), a transmission gear (63), a fixing block (64), a transmission rope (65), a driven rod (66), a transition bevel gear (67), a driven bevel gear (68) and a transmission rod (69). A stabilizing hole (61) is provided on the refueling tank above the oil outlet pipe (4). A filter screen (62) is installed inside the stabilizing hole (61). A transmission gear (63) is installed on the left side of the filter screen (62). A support rod (631) is installed in the middle of the transmission gear (63). A fan (632) is installed on the support rod (631) in the array. A driven gear (632) is meshed below the transmission gear (63). (633), a rotating rod (634) is installed on the axis of the driven gear (633), two fixed blocks (64) are installed below the driven rod (66), the fixed blocks (64) are located inside the filling box (2), and a transmission rope (65) is installed on the rotating rod (634), the other end of the transmission rope (65) is installed on the driven rod (66), a transition bevel gear (67) is installed at the lower right of the driven rod (66), a fixed shaft (671) is installed at the axis position of the transition bevel gear (67), a driven bevel gear (68) is meshed and installed on the right side of the transition bevel gear (67), and a transmission rod (69) is installed on the axis of the driven bevel gear (68).

3. A skid-mounted double-layer fuel filling equipment according to claim X, characterized in that: A telescopic rod (641) is installed between the fixed blocks (64) inside the filling box (2), and a baffle (642) for sealing the stabilization hole (61) is fixedly installed above the telescopic rod (641), and the cross-sectional shape of the baffle (642) is U-shaped.

4. A skid-mounted double-layer fuel filling equipment according to claim X, characterized in that: A transmission bevel gear (661) is fixedly mounted on a right section of the driven rod (66), and the transmission bevel gear (661) is meshed with a transition bevel gear (67). A limit block (662) is mounted inside the right side of the transmission bevel gear (661), and the cross-sectional shape of the limit block (662) is U-shaped. An extrusion spring (663) is clamped inside the U-shaped limit block (662), and a sliding block (664) is clamped at the other end of the extrusion spring (663), and the cross-sectional shape of the sliding block (664) is a right-angled trapezoid. A transmission rod (69) is provided at the axis of the transmission bevel gear (661).

5. A skid-mounted double-layer fuel filling equipment according to claim X, characterized in that: The transition bevel gear (67) is meshed with the driven bevel gear (68); a support block (681) is installed on a surface of the driven bevel gear (68) close to the transmission bevel gear (661); the cross-sectional shape of the support block (681) is U-shaped; a support spring (682) is clamped inside the support block (681); the other end of the support spring (682) is clamped with a transmission block (683); the cross-sectional shape of the transmission block (683) is a right-angled trapezoid; the shape of the transmission block (683) and the shape of the sliding block (664) are in the same inclination direction.

6. A skid-mounted double-layer fuel filling equipment according to claim X, characterized in that: Two limit cylinders (691) are installed on the transmission rod (69) at the axis of the driven bevel gear (68) and the transmission bevel gear (661). The two limit cylinders (691) are respectively installed in a row of the transmission block (683) and the sliding block (664). The limit cylinder (691) is installed with a helical tooth (692). The inclined surface of the helical tooth (692) is arranged face to face with the inclined surface of the transmission block (683) and the sliding block (664). The other end of the transmission rod (69) is installed on the oil outlet pipe (4).

7. A skid-mounted double-layer fuel filling equipment according to claim X, characterized in that: A sensor (41) for controlling the extension and retraction of the telescopic rod (641) is installed inside the oil outlet pipe (4). A fixing cylinder (42) is installed on the side of the connection part of the oil outlet pipe (4). The fixing cylinder (42) is composed of two arc cylinders. A supporting gear (43) is installed inside the upper end of the fixing cylinder (42), and the axis of the supporting gear (43) is connected to a transmission rod (69). An adjusting gear (44) is installed inside the lower end of the fixing cylinder (42). The adjusting gear (44) is meshed with the supporting gear (43). An adjusting groove (45) is provided in the internal array of the adjusting gear (44). An adjusting spring (46) is clamped in the internal array of the adjusting groove (45). An adjusting block (47) is clamped at the other end of the adjusting spring (46). The cross-section of the adjusting block (47) is in the shape of an arc, and the right end of the adjusting block (47) is chamfered.

8. The skid-mounted double-layer fuel filling equipment according to claim X is characterized in that: One end of the bifurcated pipe (5) close to the oil outlet pipe (4) is composed of two pipes slidably connected, and a fixing groove (51) is provided in an array on the side of the bifurcated pipe (5). The cross-sectional shape of the fixing groove (51) is rectangular, and the ratio of the length of the fixing groove (51) to the length of the adjustment block (47) is 5:4.