Automatically-separated oil conveying pipe and oiling machine
By designing an automatically detachable fuel delivery pipe, and utilizing sliding blocks and elastic components to automatically seal the connecting hole under abnormal tension, the problem of fuel leakage caused by the breakage of the fuel delivery pipe is solved, thus improving the safety and efficiency of gas stations.
Patent Information
- Application Number
- CN202520551100.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-27
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-03-27
AI Technical Summary
The fuel delivery pipes of existing fuel dispensers are prone to breakage under abnormal tension, leading to fuel leakage and posing a safety hazard.
Design an automatic disconnecting oil pipeline, comprising a first connecting end and a second connecting end. Utilizing a first sliding block and a first elastic element, when encountering abnormal tension, the sliding block quickly resets under the action of the elastic element to seal the connecting hole, thereby achieving automatic disconnection of the oil pipeline.
It effectively prevents fuel leaks, reduces the probability of fires and other safety accidents, improves overall safety performance, and ensures the safe operation of gas stations.
Smart Images
Figure CN223708954U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to oiling equipment technical field, concretely relates to an automatic disengaging oil pipe and oiling machine. BACKGROUND
[0002] The oiling machine is the core equipment of the modern oil station, and it is used for quickly and accurately filling fuel for various vehicles. In the busy oil station scene, after the driver drives the vehicle into the designated position, the staff will operate the oiling machine to deliver the fuel to the vehicle tank through the oil pipe. This process seems simple, but in actual operation, it hides certain risks.
[0003] A common risk is that when the oiling is completed, if the staff or the driver is careless and forgets to pull out the oil gun from the vehicle tank, and the vehicle suddenly starts to drive away, the oil pipe of the oiling machine may be forcibly pulled off, thereby causing fuel leakage. This situation not only causes waste of resources, but also causes fire accidents and other safety accidents.
[0004] Therefore, a structure capable of automatically disconnecting the oil pipe of the oiling machine according to abnormal tension is needed to ensure the safe operation of the oil station. CONTENT OF THE UTILITY MODEL
[0005] In view of the deficiencies in the prior art, the utility model provides an automatic disengaging oil pipe and oiling machine to solve the technical problem of fuel leakage caused by the disconnection of the oil pipe under abnormal tension in the prior art.
[0006] The utility model adopts the technical scheme of an automatic disengaging oil pipe and oiling machine.
[0007] Among them, an automatic disengaging oil pipe comprises a first connecting end and a second connecting end, the first connecting end comprises an outer pipe and an inner pipe arranged in the outer pipe, a first sliding block is slidingly installed between the outer pipe and the inner pipe, a second communication hole communicating with the inner cavity of the inner pipe is arranged on the side wall of the inner pipe, the first sliding block is provided with a first communication hole, and a first elastic member for resetting the first sliding block is further arranged in the outer pipe.
[0008] Among them, the first sliding block has a first position for keeping the first communication hole communicating the inner cavity of the outer pipe and the second communication hole when the first connecting end and the second connecting end are inserted, and a second position for resetting the inner cavity of the outer pipe and the second communication hole under the action of the first elastic member when the insertion fails.
[0009] Optionally, when the first connecting end and the second connecting end are inserted, the second connecting end is inserted into the sliding cavity between the outer pipe and the inner pipe, and the friction force of interference fit forms a detachable connection relationship.
[0010] Optionally, the surface of the second connection end is provided with a rubber layer.
[0011] Optionally, a rubber ring is provided around the circumference of the second connecting end.
[0012] Optionally, it may also include a second elastic element and a second sliding block;
[0013] The second connecting end includes a shell tube and a core tube. The head ends of the shell tube and the core tube are connected as one piece. The tail end of the core tube is closed. A third through hole is provided on the core tube. A matching abutment structure is provided on the outer end of the inner tube. The second sliding block is slidably disposed inside the core tube. The second elastic element is connected between the bottom of the core tube and the second sliding block.
[0014] Initially, the second sliding block is located at the opening of the core tube. After the first connecting end and the second connecting end are inserted together, the abutment structure pushes up the second sliding block and slides it to the tail end of the core tube.
[0015] Optionally, the first elastic element and / or the second elastic element are springs, with both ends of the springs fixedly connected to their respective abutment ends.
[0016] Optionally, at the opposite ends of the first and second connecting ends, the abutment structure is an abutment post protruding from the end face of the inner tube.
[0017] Optionally, the tail ends of the first connecting end and the second connecting end are respectively connected to the oil inlet pipe and the oil outlet pipe.
[0018] Optionally, the inner tube and the outer tube are connected as a whole by a connecting frame, and multiple connecting frames are arranged along the circumference, with gaps between adjacent connecting frames.
[0019] One type of fuel dispenser includes a fuel dispenser body and a fuel nozzle, and also includes an automatically detachable fuel delivery pipe as described above, wherein the fuel dispenser body and the fuel nozzle are connected through the automatically detachable fuel delivery pipe.
[0020] As can be seen from the above technical solution, the beneficial technical effects of this utility model are as follows:
[0021] This invention proposes an automatically detachable fuel delivery pipe and refueling machine, effectively solving the safety hazard of fuel leakage caused by abnormal tension breaking of the fuel delivery pipe due to negligence during the refueling process. By designing an automatic detachment structure including a first connecting end, a second connecting end, a first elastic element, and a first sliding block, this structure can respond quickly to abnormal tension, achieving automatic detachment of the fuel delivery pipe and preventing it from being forcibly pulled off. This not only reduces resource waste but also significantly lowers the probability of fires and other safety accidents, improving the overall safety performance of gas stations and ensuring the safety of personnel and property. Attached Figure Description
[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0023] Figure 1 This is a schematic diagram of the automatically detached oil pipeline of this utility model in the detached state.
[0024] Figure 2 This is a schematic diagram of the automatically disconnected oil pipeline connection state of this utility model;
[0025] Figure 3 This is a three-dimensional schematic diagram of the automatically detached oil pipeline of this utility model in the detached state.
[0026] Figure 4 This is a schematic diagram of the fuel dispenser of this utility model;
[0027] Reference numerals: First connecting end 1, outer tube 10, inner tube 11, second connecting hole 111, abutment structure 112, connecting frame 12, sliding cavity 13, second connecting end 2, shell tube 20, core tube 21, third connecting hole 212, rubber ring 22, first elastic element 3, first sliding block 4, first connecting hole 40, second elastic element 5, second sliding block 6, fuel dispenser body 7, fuel nozzle 8. Detailed Implementation
[0028] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.
[0029] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
[0030] This embodiment provides an automatically detachable oil delivery pipe and a refueling machine. One possible implementation of the oil delivery pipe is as follows:
[0031] See Figures 1-3 The oil pipeline includes a first connecting end 1 and a second connecting end 2 that can be plugged into each other, and also includes a first elastic element 3 and a first sliding block 4. The tail ends of the first connecting end 1 and the second connecting end 2 are respectively connected to an oil inlet pipe and an oil outlet pipe. The oil inlet pipe can be connected to a fuel dispenser, and the oil outlet pipe is connected to a fuel nozzle.
[0032] like Figure 3As shown, the first connecting end 1 includes an outer tube 10 and an inner tube 11 disposed within the outer tube. The tail end of the inner tube 11 is connected to the outer tube 10 as a whole by a connecting frame 12. Multiple connecting frames 12 are arranged along the circumference, but not too many, otherwise it may affect the effective flow cross section. There is a gap between adjacent connecting frames 12. The tail end of the inner tube 11 is closed, and the liquid can only flow between the outer tube 10 and the inner tube 11. A sliding cavity 13 is formed between the outer tube 10 and the inner tube 11, which is also a fluid channel. A first sliding block 4 is slidably installed between the outer tube 10 and the inner tube 11. The first sliding block 4 is sleeved in the sliding cavity 13. A first elastic element 3 abuts against the first sliding block 4 and the connecting frame 12. The initial position of the first sliding block 4 in the sliding cavity 13 is determined by the elastic force of the first elastic element 3. The first elastic element causes the first sliding block 4 in the outer tube 10 to return to the second position.
[0033] The first sliding block 4 is provided with a first connecting hole 40. One end of the first connecting hole 40 is located on one side of the connecting frame 12 and communicates with the inside of the outer tube 10. The other end is located on one side of the inner tube 11. The side wall of the inner tube is provided with a second connecting hole 111 that communicates with its inner cavity. During the sliding process of the first sliding block 4, the first connecting hole 40 and the second connecting hole 111 can switch between disconnected or connected states.
[0034] The first sliding block 4 has a first position in which the first connecting hole 40 connects the inner cavity of the outer tube 10 and the second connecting hole 111 when the first connecting end 1 and the second connecting end 2 are inserted, and a second position in which the inner cavity of the outer tube 10 and the second connecting hole 111 are disconnected under the action of the first elastic member 3 when the insertion fails.
[0035] In simple terms, in the first position, when the first connecting end 1 and the second connecting end 2 are inserted together, the second connecting end 2 pushes up the first sliding block 4 to slide, and the first connecting hole 40 communicates with the second connecting hole 111; in the second position, when the first connecting end 1 and the second connecting end 2 are disengaged, the first elastic element 3 pushes up the first sliding block 4 to close the second connecting hole 111.
[0036] The working principle of the above embodiments is as follows:
[0037] Initially, the first connection end 1 and the second connection end 2 are in a disconnected state, as follows: Figure 1 As shown. At this time, at the first connecting end 1, the elastic force of the first elastic element 3 pushes the first sliding block 4 to slide, so that the position of the holeless position on the upper side wall of the first sliding block 4 is aligned with the second connecting hole 111. Therefore, the first connecting hole 40 cannot be connected, which is equivalent to the first connecting end 1 being closed, and the fluid cannot flow out.
[0038] When the first connecting end 1 and the second connecting end 2 are inserted, the second connecting end 2 is inserted and pushes up the first sliding block 4 to move to the position where the first connecting hole 40 and the second connecting hole 111 are aligned, thus forming a communication state. Therefore, the fluid can flow into the second connecting end 2 after passing through the first connecting hole 40 and the second connecting hole 111 in sequence.
[0039] The technical effect of the above embodiment is as follows: When refueling normally, the first connecting end 1 and the second connecting end 2 are connected together as a whole, which is no different from ordinary oil pipeline. Once the oil pipeline is subjected to abnormal tension, the first connecting end 1 and the second connecting end 2 are pulled apart. At the moment of pulling apart, the second connecting end 2 loses its resistance to the first sliding block 4. Under the action of the first elastic element 3, the first sliding block 4 instantly resets and blocks the second connecting hole 111, thereby closing the first connecting end 1.
[0040] In summary, during normal refueling operations, the automatically disengaging fuel line functions stably like a conventional pipeline, ensuring smooth and unobstructed refueling. However, in the event of abnormal pulling force, such as a vehicle suddenly starting and dragging, the automatic disengagement mechanism immediately activates, rapidly separating the first and second connecting ends. Simultaneously, the first sliding block quickly resets under the elastic force of the first elastic element, sealing the second connecting hole and immediately cutting off fuel flow. This effectively prevents fuel leakage, significantly reduces safety hazards, and ensures the safety of refueling operations.
[0041] In the above embodiments, the critical force at which the first connecting end 1 and the second connecting end 2 disengage is crucial. Generally speaking, the critical force at disengagement is greater than the drag force exerted on the pipeline by the operator during normal use of the oil gun, but much less than the force exerted when the pipeline is forcibly broken. By testing the pulling force exerted on the pipeline by the operator during normal refueling, and adding a certain amount of redundancy, the critical force is obtained and used as the design value of the frictional force required for disengagement.
[0042] To facilitate the disengagement of the first connecting end 1 and the second connecting end 2, when the first connecting end 1 and the second connecting end 2 are inserted together, the second connecting end 2 is inserted into the sliding cavity 13. The frictional force of the interference fit forms a connection that can be disengaged. The critical force for disengagement is related to the magnitude of the frictional force. The magnitude of the frictional force can be adjusted by the material or structure of the contact surface.
[0043] From a material perspective, the surface of the second connecting end 2 is provided with a rubber layer. The rubber material has a certain degree of elasticity, ensuring a reliable connection and good sealing effect when inserted.
[0044] From a structural perspective, a rubber ring 22 is provided around the circumference of the second connecting end 2. The number of rubber rings 22 can be varied, and different numbers of rings result in different frictional forces.
[0045] Please refer to this embodiment. Figure 3It also includes a second elastic element 5 and a second sliding block 6;
[0046] The second connecting end 2 includes a shell tube 20 and a core tube 21. The head ends of the shell tube 20 and the core tube 21 are connected as one piece for insertion into the sliding cavity 13. The tail end of the core tube 21 is closed, and a through third connecting hole 212 is provided on the core tube 21. Fluid can only enter the space between the shell tube 20 and the core tube 21 through the third connecting hole 212. A matching abutment structure 112 is provided at the outer end of the inner tube 11. The second sliding block 6 is slidably disposed inside the core tube 21. The second elastic element 5 is connected between the bottom of the core tube 21 and the second sliding block 6. During insertion, the abutment structure 112 will push the second sliding block 6 to slide inside the core tube 21, so that the second connecting hole 111, the interior of the core tube 21, and the third connecting hole 212 form a communication relationship, thereby connecting the oil pipe. The first elastic element 3 and / or the second elastic element 5 are springs, and the two ends of the springs are fixedly connected to their respective abutment ends.
[0047] Initially, the second sliding block 6 is located at the opening of the core tube 21, sealing the second connecting end 2. After the first connecting end 1 and the second connecting end 2 are inserted, the abutment structure 112 pushes the second sliding block 6 to slide, moving it to the tail end of the core tube 21, allowing the oil pipe to connect. At the opposite ends of the connection between the first connecting end 1 and the second connecting end 2, the abutment structure 112 is an abutment post protruding from the end face of the inner tube 11, with a gap between the abutment posts serving as an oil passage.
[0048] The fluid piping during insertion in the above embodiments can be found in [reference needed]. Figure 2 The fluid flows in from the tail end of the first connecting end 1, passes through the connecting frame 12 and enters the sliding cavity 13, then passes through the first connecting hole 40, the second connecting hole 111, the inner tube 11, the gap of the abutment structure 112, the third connecting hole 212, and finally flows into the tail end of the second connecting end 2.
[0049] The working principle when disconnected is as follows Figure 1 As shown, the automatic closing principle of the first connecting end 1 has been explained above. Here, the automatic closing principle of the second connecting end 2 will be explained. Simply put, when the first connecting end 1 and the second connecting end 2 are disengaged, the second elastic element 5 pushes up the second sliding block 6 and slides it towards the tube opening inside the core tube 21, eventually stopping at a position beyond the third connecting hole 212, thereby closing the second connecting end 2.
[0050] The above embodiments are remarkably effective: in the instant the refueling line accidentally detaches, the first connecting end quickly resets and closes under the action of the first elastic element via the first sliding block, effectively preventing further fuel outflow and avoiding resource waste and potential safety risks. Simultaneously, the second connecting end also pushes up the second sliding block via the second elastic element, sliding to the closed position within the core tube, preventing the backflow of residual fuel in the output line, further ensuring the safety and stability of the refueling process.
[0051] This embodiment relates to a fuel dispenser, including a fuel dispenser body 7 and a fuel nozzle 8, and also includes an automatically detachable fuel delivery pipe as described above. The fuel dispenser body 7 and the fuel nozzle 8 are connected by the automatically detachable fuel delivery pipe, with one end of the automatically detachable fuel delivery pipe connected to the fuel outlet pipe of the fuel dispenser body 7 and the other end connected to the fuel nozzle 8.
[0052] In the daily operation of gas stations, the safety and efficiency of the refueling process are paramount. Traditional refueling hoses often break under abnormal tension when encountering unexpected situations such as sudden vehicle starts, leading to fuel leaks. This not only wastes resources but can also cause serious consequences such as fires. While reinforced hoses increase their tensile strength, vehicles may still drag the refueling pump, potentially causing even greater safety hazards, such as pump tipping over, large-scale fuel leaks, and sparks generated from friction with the ground. All of these factors seriously threaten the safe operation of the gas station.
[0053] Addressing the safety hazards in the aforementioned scenarios, this automatically detachable fuel hose and dispenser demonstrate unique and beneficial effects. Firstly, upon encountering abnormal tension, the device can quickly and automatically detach the first and second connecting ends, effectively avoiding the risk of the fuel hose being broken and thus preventing fuel leakage. Secondly, at the moment of detachment, the first and second connecting ends automatically seal via built-in elastic elements and sliding blocks, ensuring that fuel will not continue to flow out or leak back, further reducing safety hazards. Furthermore, the device's design also considers ease of operation and durability, ensuring smooth refueling and long-term equipment use, and enabling quick replacement of the dispenser's nozzle.
[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. An automatically detachable oil pipeline, characterized in that, It includes a first connecting end (1) and a second connecting end (2). The first connecting end includes an outer tube (10) and an inner tube (11) disposed inside the outer tube. A first sliding block (4) is slidably installed between the outer tube (10) and the inner tube (11). The side wall of the inner tube is provided with a second communicating hole (111) communicating with its inner cavity. The first sliding block (4) is provided with a first communicating hole (40). The outer tube (10) is also provided with a first elastic element (3) that resets the first sliding block (4). The first sliding block (4) has a first position in which the first connecting hole (40) connects the inner cavity of the outer tube (10) and the second connecting hole (111) when the first connecting end (1) and the second connecting end (2) are inserted, and a second position in which the inner cavity of the outer tube (10) and the second connecting hole (111) are disconnected under the action of the first elastic element (3) when the insertion fails.
2. The automatically disconnecting oil pipeline as described in claim 1, characterized in that: When the first connecting end (1) and the second connecting end (2) are inserted together, the second connecting end (2) is inserted into the sliding cavity (13) between the outer tube (10) and the inner tube (11), and a connection relationship that can be disengaged is formed by the frictional force of the interference fit.
3. The automatically disconnecting oil pipeline as described in claim 2, characterized in that: The surface of the second connecting end (2) is provided with a rubber layer.
4. The automatically disconnecting oil pipeline as described in claim 2, characterized in that: The second connecting end (2) is provided with a rubber ring (22) around its circumference.
5. The automatically disconnecting oil pipeline as described in claim 1, characterized in that: It also includes a second elastic element (5) and a second sliding block (6); The second connecting end (2) includes a shell tube (20) and a core tube (21). The head ends of the shell tube (20) and the core tube (21) are connected as one unit. The tail end of the core tube (21) is closed. A third through hole (212) is provided on the core tube (21). A matching abutment structure (112) is provided on the outer end of the inner tube (11). The second sliding block (6) is slidably disposed in the core tube (21). The second elastic element (5) is connected between the bottom of the core tube (21) and the second sliding block (6). Initially, the second sliding block (6) is located at the opening of the core tube (21). After the first connecting end (1) and the second connecting end (2) are inserted together, the abutment structure (112) pushes up the second sliding block (6) and slides it to the tail end of the core tube (21).
6. The automatically disconnecting oil pipeline as described in claim 5, characterized in that: The first elastic element (3) and / or the second elastic element (5) are springs, and the two ends of the springs are fixedly connected to their respective abutment ends.
7. The automatically disconnecting oil pipeline as described in claim 5, characterized in that: At the opposite ends of the connection between the first connecting end (1) and the second connecting end (2), the abutment structure (112) is an abutment post protruding from the end face of the inner tube (11).
8. The automatically disconnecting oil pipeline as described in claim 1, characterized in that: The tail ends of the first connecting end (1) and the second connecting end (2) are respectively connected to the oil inlet pipe and the oil outlet pipe.
9. The automatically disconnecting oil pipeline as described in claim 1, characterized in that: The inner tube and the outer tube are connected as one unit by a connecting frame (12). Multiple connecting frames (12) are arranged along the circumference, and there is a gap between adjacent connecting frames (12).
10. A fuel dispenser, comprising a fuel dispenser body (7) and a fuel nozzle (8), characterized in that, It also includes the automatically detachable oil delivery pipe as described in claim 1, wherein the fuel dispenser body (7) and the fuel nozzle (8) are connected through the automatically detachable oil delivery pipe.