Anti-overflow device for refueling

Abstract

The utility model relates to a refueling anti-overflow device which comprises an exhaust pipe, a sealing assembly and a buoyancy driving assembly are arranged on the exhaust pipe, the sealing assembly is arranged at the top of the exhaust pipe and can be opened or closed along the axis of the exhaust pipe, and the buoyancy driving assembly is sleeved at the bottom of the exhaust pipe and can slide up and down along the exhaust pipe. The buoyancy driving assembly and the sealing assembly are connected through two sets of symmetrically-arranged transmission assemblies, and the buoyancy driving assembly drives the sealing assembly to slide downwards through the transmission assemblies. In the transmission assembly, a rack is fixed to the buoyancy driving assembly, a gear is fixed to the exhaust pipe through a rotating shaft, one end of a traction rope is fixed to the rotating shaft of the gear, the other end of the traction rope is fixed to the sealing assembly, the buoyancy driving assembly floats upwards to drive the rack to move upwards, and the rack drives the gear to rotate to wind and tighten the traction rope. According to the oil filling device, the structure is reasonable, use is convenient, and the sealing assembly is automatically closed along with rising of the oil level.

Description

Technical Field

[0001] The utility model relates to the technical field of oil tank accessories, in particular to a refueling anti-overflow device. Background Art

[0002] Fuel energy is an important energy source in industrial production, especially fuel oil, which is widely used due to its high conversion rate, easy transportation and use. Fuel is usually stored in the fuel tank of the equipment and continuously supplies fuel to the power system through the oil circuit. In order to ensure the continuous and stable operation of the equipment, the fuel tank needs to be frequently replenished with new oil. Refueling is usually done by placing a funnel at the refueling port. During the refueling process, oil continues to enter the fuel tank and takes up space in the fuel tank. The air in the fuel tank is squeezed out from the gap between the funnel and the refueling port. At the same time, the pressurized air carries the oil entering from the refueling port and is squeezed out from the gap, causing oil overflow and wasting oil products. At the same time, it affects the refueling speed and pollutes the surrounding environment. Chinese Patent CN21146 8159U discloses an anti-overflow fuel filler port structure for a rotationally molded fuel tank. A fuel filler port and an air outlet are provided on the top surface of the tank body. A barrier ball and a sealing seat cover are provided at the fuel filler port, and an oil-isolating air valve is installed inside the air outlet to solve the problem of easy oil overflow. However, the barrier ball of the fuel filler port of this patent is prone to deformation of its sealing function after long-term use, resulting in overflow of oil at a high liquid level from the air valve, or overflow and spillage of oil from the air valve during the movement of the fuel tank. Therefore, in response to the above problems, this application proposes a refueling anti-overflow device that can automatically close the exhaust system. Utility Model Content

[0003] The purpose of the utility model is to provide a refueling anti-overflow device that can automatically close the exhaust system to solve the problems raised in the above background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A refueling anti-overflow device includes an exhaust pipe, on which a sealing assembly and a buoyancy drive assembly are provided. The sealing assembly is arranged at the top of the exhaust pipe, and the buoyancy drive assembly is sleeved on the bottom of the exhaust pipe and can slide up and down along the exhaust pipe. The buoyancy drive assembly and the sealing assembly are connected by two groups of symmetrically arranged transmission assemblies, and the buoyancy drive assembly drives the sealing assembly to slide downward through the transmission assembly.

[0006] The above-mentioned refueling anti-overflow device, the transmission assembly includes a rack, a gear and a traction rope, the rack is fixed on the buoyancy drive assembly, the gear is fixed to the exhaust pipe through a rotating shaft, and the two traction ropes are symmetrically arranged on both sides of the gear. One end of the traction rope is fixed to the rotating shaft and can be wound around the rotating shaft, and the other end is fixed to the sealing assembly.

[0007] The traction rope is provided with a sliding block which is sleeved on the two traction ropes and slides synchronously with the two traction ropes, and the exhaust pipe is provided with a sliding channel matched with the sliding block.

[0008] The buoyancy driving assembly includes a sleeve ring, connecting rods and buoyancy balls, the connecting rods are arranged in a circumferential array on the sleeve ring, the buoyancy balls are arranged one by one at free ends of the connecting rods, the sleeve ring is sleeved on the exhaust pipe, and the rack is fixed on the sleeve ring.

[0009] The buoyancy driving assembly is integrally formed by using a light and oil-resistant material, and the buoyancy balls are hollow balls.

[0010] The sealing assembly includes a locking part and a sealing part which are coaxially arranged, the sealing part is arranged below the locking part, and the traction rope is fixed on the locking part.

[0011] The locking part includes a gland, guide columns and self-resetting elastic pins, the self-resetting elastic pins are uniformly distributed on the circumference of the gland, the guide columns are symmetrically arranged below the gland, the guide columns are sleeved with reset springs, and the exhaust pipe is provided with guide holes matched with the guide columns.

[0012] The self-resetting elastic pins are connected with a button arranged at the center of the gland, and pressing the button can drive the self-resetting elastic pins to shrink to the center.

[0013] The exhaust pipe includes a pipe body, a fixing sleeve and a fixing ring which are connected by threads, the fixing sleeve is arranged on the upper part of the pipe body, the fixing ring is arranged on the lower part of the pipe body, and the fixing sleeve is provided with fixing holes matched with the self-resetting elastic pins.

[0014] The pipe body is provided with exhaust holes penetrating the upper and lower parts, the guide holes are symmetrically arranged on both sides of the exhaust holes, and the sliding channels are arranged outside the guide holes and penetrating the upper and lower parts.

[0015] The technical scheme has the following beneficial effects:

[0016] The oiling anti-overflow liquid device provided by the utility model is provided with a sealing assembly and a buoyancy driving assembly on the exhaust pipe, the sealing assembly and the buoyancy driving assembly are connected through two groups of symmetrically arranged transmission assemblies, the sealing assembly is driven to slide downwards through the transmission assembly when the buoyancy driving assembly rises, the sealing assembly completely seals the exhaust hole when the liquid level reaches the set position, and the oil liquid can be prevented from overflowing or spilling from the exhaust hole; the symmetric arrangement of the two groups of transmission assemblies makes the sealing assembly balanced in stress, can smoothly slide along the guide column, and has small sealing part wear, good sealing effect and long service life; the application has reasonable structure, smooth exhaust, is convenient to use, and the sealing assembly is automatically closed along with the oil level rising, manual operation is not needed, and can be automatically clamped and tightly sealed. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 is the front view structure schematic diagram of the utility model;

[0019] Figure 3 is the side view structure schematic diagram of the utility model;

[0020] Figure 4 is the front view structure sectional view of the utility model in the open exhaust state.

[0021] In the drawing: 1, exhaust pipe; 1-1, pipe body; 1-1-1, exhaust hole; 1-1-2, guide hole; 1-1-3, slide; 1-2, fixed sleeve; 1-2-1, fixed hole; 1-3, fixed ring; 1-1-3, slide; 1-2, fixed sleeve; 1-3, fixed ring; 2, sealing assembly; 2-1, locking part; 2-1-1, gland; 2-1-2, guide column; 2-1-3, self-resetting elastic pin; 2-1-4, button; 2-2, sealing part; 3, buoyancy driving assembly; 3-1, sleeve ring; 3-2, connecting rod; 3-3, buoyancy ball; 4, transmission assembly; 4-1, rack; 4-2, gear; 4-3, traction rope; 4-4, rotating shaft; 4-5, sliding block. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model is clearly and completely described below in combination with specific embodiments.

[0023] For example, Figures 1 to 4The oil filling anti-overflow liquid device shown comprises an exhaust pipe 1, the exhaust pipe 1 is provided with a sealing assembly 2 and a buoyancy driving assembly 3, the sealing assembly 2 is arranged at the top of the exhaust pipe 1, the buoyancy driving assembly 3 is sleeved at the bottom of the exhaust pipe 1 and can slide up and down along the exhaust pipe 1, the buoyancy driving assembly 3 and the sealing assembly 2 are connected through two groups of symmetrically arranged transmission assemblies 4, and the buoyancy driving assembly 3 drives the sealing assembly 2 to slide downward to close the exhaust port through the transmission assembly 4 as the oil liquid rises.

[0024] As shown in Figure 2 and Figure 3 The transmission assembly 4 comprises a rack 4-1, a gear 4-2 and a traction rope 4-3, the rack 4-1 is fixed on the buoyancy driving assembly 3, the gear 4-2 is fixed on the exhaust pipe 1 through a rotating shaft 4-4 and is engaged with the rack 4-1, two traction ropes 4-3 are symmetrically arranged on the two sides of the gear 4-2, one end of the traction rope 4-3 is fixed on the rotating shaft 4-4, the traction rope 4-3 can be wound on the rope wheel on the rotating shaft 4-4 as the gear 4-2 rotates, and the other end of the traction rope 4-3 is fixed at the bottom of the sealing assembly 2 and can pull the sealing assembly 2 to move downward, a sliding block 4-5 is arranged on the traction rope 4-3, the sliding block 4-5 is sleeved on the two traction ropes 4-3 and slides synchronously with the two traction ropes 4-3, the exhaust pipe 1 is provided with a slide way 1-1-3 matched with the sliding block 4-5, the traction rope 4-3 slides through the exhaust pipe 1 through the sliding block 4-5, which can avoid the shaking and displacement of the traction rope 4-3 and the wear caused thereby, and at the same time ensures the sealing of the oil tank at the slide way 1-1-3.

[0025] As shown in Figure 1 The buoyancy driving assembly 3 comprises a sleeve ring 3-1, a connecting rod 3-2 and a buoyancy ball 3-3, a plurality of connecting rods 3-2 are arranged in a circumferential array and inclined on the sleeve ring 3-1, a plurality of buoyancy balls 3-3 are arranged one by one at the free ends of the connecting rods 3-2, the sleeve ring 3-1 is sleeved on the exhaust pipe 1 and can slide up and down, and the rack 4-1 of the transmission assembly 4 is fixed on the sleeve ring 3-1, the buoyancy balls 3-3 in the embodiment of the application are provided as three hollow balls.

[0026] As shown in Figures 2 to 4As shown, the exhaust pipe 1 includes a pipe body 1-1, a fixing sleeve 1-2 and a fixing ring 1-3 connected by threads, the fixing sleeve 1-2 is arranged on the upper part of the pipe body 1-1 by threads, facilitating the installation of the device on the oil tank, the fixing ring 1-3 is arranged on the lower part of the pipe body 1-1 by threads, facilitating the installation of the buoyancy driving assembly 3, and adjusting the height of the fixing ring 1-3 can limit the buoyancy driving assembly 3. The sealing assembly 2 is arranged on the pipe body 1-1, the pipe body 1-1 is provided with an exhaust hole 1-1-1 penetrating the upper and lower parts in the center, the sealing assembly 2 is coaxially arranged with the exhaust hole 1-1-1, guide holes 1-1-2 are symmetrically arranged on both sides of the exhaust hole 1-1-1, and slide ways 1-1-3 penetrating the upper and lower parts are arranged outside the guide holes 1-1-2; the sealing assembly 2 includes a locking part 2-1 and a sealing part 2-2 coaxially arranged, the sealing part 2-2 is arranged below the locking part 2-1 and coaxial with the exhaust hole 1-1-1, and the sealing part 2-2 is integrally formed by using oil-resistant sealing materials, such as oil-resistant rubber, oil-resistant butadiene rubber or oil-resistant silicone rubber; the traction rope 4-3 is fixed on the locking part 2-1 by penetrating the slide way 1-1-3. The locking part 2-1 includes a gland 2-1-1, guide columns 2-1-2 and self-resetting elastic pins 2-1-3, the self-resetting elastic pins 2-1-3 are evenly distributed on the circumference of the gland 2-1-1, and the fixing sleeve 1-2 is provided with fixing holes 1-2-1 matched with the self-resetting elastic pins 2-1-3; the two guide columns 2-1-2 are symmetrically arranged below the gland 2-1-1, a reset spring is sleeved on the guide column 2-1-2, and the guide column 2-1-2 is installed in the guide hole 1-1-2 of the exhaust pipe 1; the self-resetting elastic pins 2-1-3 are connected with buttons 2-1-4 arranged in the center of the gland 2-1-1, the pressing of the buttons 2-1-4 can drive the self-resetting elastic pins 2-1-3 to contract towards the center through a plurality of connecting rods or through a pull rope and a guide wheel, the self-resetting elastic pins 2-1-3 are retracted into the gland 2-1-1, the reset spring sleeved on the guide column 2-1-2 is stretched upwards to lift the sealing assembly 2, the exhaust hole 1-1-1 is opened to smoothly exhaust, and the operator can start to add oil from the oil filler port.

[0027] Workflow: Before refueling, the operator presses the button 2-1-4 of the sealing assembly 2 to lift the sealing assembly 2, and the exhaust passage is opened, and the operator continuously adds oil from the oil filler port according to the conventional process, the oil in the oil tank rises while the air is exhausted from the exhaust pipe 1, the buoyancy driving assembly 3 rises with the oil liquid level, the rack 4-1 of the transmission assembly 4 driven by the buoyancy driving assembly 3 moves upwards, the gear 4-2 rotates to wind and tighten the traction rope 4-3, the traction rope 4-3 pulls the sealing assembly 2 to slide downwards along the guide column 2-1-2, the oil rises to the set position, the sealing part 2-2 closes the exhaust hole 1-1-1, and the self-resetting elastic pins 2-1-3 of the locking part 2-1 are clamped into the fixing holes 1-2-1 on the exhaust pipe 1 to firmly fix the sealing assembly 2, and the refueling is completed.

[0028] The principle and implementation mode of the utility model are described in detail by using specific embodiments herein, and the above embodiment is only used for helping to understand the method and core idea of the utility model, and the technical solution recorded in the foregoing embodiment can be modified by the person skilled in the art, or some technical features can be replaced equivalently; and the modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and range of the technical solution of the utility model embodiment.

Claims

1. A refueling anti-overflow device, characterized by: The invention comprises an exhaust pipe (1), wherein a sealing component (2) and a buoyancy drive component (3) are provided on the exhaust pipe (1), wherein the sealing component (2) is provided at the top of the exhaust pipe (1), and the buoyancy drive component (3) is sleeved on the bottom of the exhaust pipe (1) and can slide up and down along the exhaust pipe (1), wherein the buoyancy drive component (3) and the sealing component (2) are connected via two sets of symmetrically arranged transmission components (4), and the buoyancy drive component (3) drives the sealing component (2) to slide downward via the transmission component (4).

2. The refueling anti-overflow device according to claim 1, characterized in that: The transmission assembly (4) comprises a rack (4-1), a gear (4-2) and a traction rope (4-3); the rack (4-1) is fixed to the buoyancy drive assembly (3); the gear (4-2) is fixed to the exhaust pipe (1) via a rotating shaft (4-4); two traction ropes (4-3) are symmetrically arranged on both sides of the gear (4-2); one end of the traction rope (4-3) is fixed to the rotating shaft (4-4) and can be wound around the rotating shaft (4-4); the other end is fixed to the sealing assembly (2).

3. The refueling anti-overflow device according to claim 2, characterized in that: A slider (4-5) is provided on the traction rope (4-3), and the slider (4-5) is sleeved on the two traction ropes (4-3) and slides synchronously with the two traction ropes (4-3). A slideway (1-1-3) adapted to the slider (4-5) is provided on the exhaust pipe (1).

4. The refueling anti-overflow device according to claim 2, characterized in that: The buoyancy drive assembly (3) comprises a collar (3-1), a connecting rod (3-2) and a buoyancy ball (3-3); a plurality of connecting rods (3-2) are arranged obliquely on the collar (3-1) in a circular array; a plurality of buoyancy balls (3-3) are arranged in a one-to-one correspondence at the free end of the connecting rod (3-2); the collar (3-1) is sleeved on the exhaust pipe (1); and the rack (4-1) is fixed on the collar (3-1).

5. The refueling anti-overflow device according to claim 4, characterized in that: The buoyancy drive assembly (3) is integrally formed of a lightweight oil-resistant material, and the buoyancy ball (3-3) is a hollow ball.

6. The refueling anti-overflow device according to claim 3, characterized in that: The sealing assembly (2) comprises a coaxially arranged locking portion (2-1) and a sealing portion (2-2), the sealing portion (2-2) being arranged below the locking portion (2-1), and the traction rope (4-3) being fixed on the locking portion (2-1).

7. The refueling anti-overflow device according to claim 6, characterized in that: The locking portion (2-1) comprises a pressure cover (2-1-1), a guide column (2-1-2) and a self-resetting elastic pin (2-1-3); a plurality of the self-resetting elastic pins (2-1-3) are evenly distributed on the circumference of the pressure cover (2-1-1); two guide columns (2-1-2) are symmetrically arranged below the pressure cover (2-1-1); a reset spring is sleeved on the guide column (2-1-2); and a guide hole (1-1-2) adapted to the guide column (2-1-2) is provided on the exhaust pipe (1).

8. The refueling anti-overflow device according to claim 7, characterized in that: The self-resetting elastic pin (2-1-3) is connected to a button (2-1-4) arranged at the center of the pressure cover (2-1-1), and pressing the button (2-1-4) can drive the self-resetting elastic pin (2-1-3) to shrink toward the center.

9. The refueling anti-overflow device according to claim 8, characterized in that: The exhaust pipe (1) comprises a pipe body (1-1), a fixing sleeve (1-2) and a fixing ring (1-3) connected by threads, the fixing sleeve (1-2) being arranged on the upper part of the pipe body (1-1), the fixing ring (1-3) being arranged on the lower part of the pipe body (1-1), and the fixing sleeve (1-2) being provided with a fixing hole (1-2-1) adapted to the self-resetting elastic pin (2-1-3).

10. The refueling anti-overflow device according to claim 9, characterized in that: The center of the tube body (1-1) is provided with an exhaust hole (1-1-1) penetrating the upper and lower surfaces, the guide holes (1-1-2) are symmetrically provided on both sides of the exhaust hole (1-1-1), and the slideway (1-1-3) penetrating the upper and lower surfaces is provided outside the guide hole (1-1-2).

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