Liquid fuel sensing device

Abstract

The invention relates to the technical field of gasoline detection in fuel tanks, and discloses a liquid fuel sensing device, comprising: a float rod; a float ball ring, which is slidably mounted on the float rod, and the float rod is arranged through the float rod, and the outer surface of the float ball ring is an arc surface; a suppression component; and a cleaning component; when the oil level fluctuates abnormally, the float plate flips over and slides on the arc surface of the float ball ring, which triggers the suppression component to provide resistance to the flipping of the float plate, and at the same time, the suppression component drives the cleaning component to clean the outer surface of the float rod located below the float plate, and can timely suppress the abnormal flipping of the float plate when the oil level fluctuates abnormally due to thermal expansion and contraction or road bumps, and avoid the float ball ring from rising and falling due to abnormal fluctuations, thereby avoiding the problem of inaccurate display of the oil gauge value caused by thermal expansion and contraction or road bumps, and can also synchronously clean the surface of the float rod immersed in oil for a long time, and avoid the problem of inaccurate oil gauge indication caused by stains attached to the surface.

Description

Technical Field

[0001] The invention relates to the technical field of oil tank gasoline detection, and in particular to a liquid fuel sensing device. Background Art

[0002] Fuel refers to a combustible substance. According to the state of the substance, it can be divided into solid fuel, such as coal, oil shale and coke, a product of coal processing; liquid fuel, such as petroleum and its processed products gasoline and diesel; gas fuel, such as coal gas and natural gas. Gasoline is mainly used as fuel for internal combustion engines. It is used by filling the fuel tank. The existing technology usually uses a float-type liquid level sensor to detect the fuel inside the tank.

[0003] A float-type liquid level sensor generally includes a float rod, one end of which is inserted into the fuel tank and a float is mounted on the outer wall of this end. The float can float on the liquid surface, and the internal resistance value of the float rod changes by floating up and down, thereby accurately transmitting the fuel amount information to the fuel gauge.

[0004] The float-type liquid level sensor has the following problems when in use: first, when the temperature suddenly rises or drops, according to the principle of thermal expansion and contraction, the volume of the liquid will increase or decrease accordingly, and the gasoline will expand or contract accordingly under the temperature change, which will cause the liquid level to fluctuate. This situation also occurs when the vehicle is driving on bumpy roads. The fluctuating liquid level is likely to affect the oil level information on the fuel gauge, which can easily cause the driver to misjudge the oil level; second, when the sensor is used for a long time, stains will accumulate on the float rod, hindering the movement of the float, causing the fuel gauge to deviate. Based on this, the present invention provides a liquid fuel sensor device with a simple and ingenious structure that can avoid liquid level fluctuations and stains attached to the surface of the float rod, which can cause inaccurate fuel gauge data. Summary of the invention

[0005] The purpose of the present invention is to provide a liquid fuel sensing device to solve the technical problem of inaccurate fuel gauge data caused by liquid level fluctuation and stains attached to the surface of the float rod in view of the shortcomings of the prior art.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A liquid fuel sensing device, comprising:

[0008] A floating rod having a flange fixed to its top and a base fixed to its bottom;

[0009] A float ball ring is slidably mounted on a float rod, and the float rod is arranged through the float ball ring. The outer surface of the float ball ring is an arc surface, and a float plate is slidably mounted on the arc surface.

[0010] A suppression component is installed on the float ball ring. When the float plate is overturned by liquid level fluctuation, the suppression component is triggered to provide resistance to the overturning of the float plate; and

[0011] The cleaning assembly is connected with the restraining assembly. When the restraining assembly provides resistance to the turning over of the float plate, the cleaning assembly cleans the outer surface of the float rod under the float plate.

[0012] As a further solution of the present invention: the suppression component comprises:

[0013] A first movable rod is symmetrically arranged with the second movable rod, and both the first movable rod and the second movable rod are slidably installed in the float ball ring;

[0014] An accommodating cavity, wherein the two accommodating cavities are both opened on the arc surface, and two gears are rotatably installed in the two accommodating cavities respectively, and the two gears are respectively connected to the two sides of the float plate through two connecting rods, and racks are arranged on the first movable rod and the second movable rod, and the two racks are respectively meshed with the two gears, and the two racks are located between the two gears; and

[0015] The counterweight ring is sleeved on the outside of the floating rod and is located above the first movable rod and the second movable rod. The top of the first movable rod and the top of the second movable rod are both rotatably connected to the counterweight ring.

[0016] As a further solution of the present invention: there is a gap between the first movable rod and the second movable rod.

[0017] As a further solution of the present invention: the suppression assembly also includes a limiting top plate and a limiting bottom plate for limiting the flipping angle of the float plate, and the limiting top plate and the limiting bottom plate are respectively fixed to the top and bottom of the float ball ring.

[0018] As a further solution of the present invention: a first ball head rod and a second ball head rod are fixed to the top of the first movable rod and the top of the second movable rod respectively, and the top of the first ball head rod and the top of the second ball head rod are both rotatably connected to the counterweight ring.

[0019] As a further solution of the present invention: both the first ball head rod and the second ball head rod are provided with a stopper, and the stopper is located between the counterweight ring and the float plate.

[0020] As a further solution of the present invention: the cleaning component comprises:

[0021] Cleaning chambers, wherein the two cleaning chambers are both opened at the bottom of the float plate, the two cleaning chambers are symmetrically arranged, and the bottoms of the two cleaning chambers are both opened with through holes;

[0022] A first push plate is slidably mounted in a cleaning chamber and fixed to the bottom of the first movable rod; and

[0023] The second push plate is slidably installed in another cleaning cavity and is fixed to the bottom of the second movable rod. The first push plate and the second push plate are symmetrically arranged.

[0024] As a further solution of the present invention: the first push plate and the second push plate are both in contact with the outer surface of the floating rod.

[0025] Beneficial effects of the present invention:

[0026] (1) In the present invention, when the oil level fluctuates abnormally, the float plate flips over and slides on the arc surface of the float ball ring, triggering the suppression component to provide resistance to the flipping of the float plate. At the same time, the suppression component drives the cleaning component to clean the outer surface of the float rod below the float plate. When the oil level fluctuates abnormally due to thermal expansion and contraction or road bumps, the abnormal flipping of the float plate can be suppressed in time to prevent the float ball ring from rising and falling due to abnormal fluctuations, thereby preventing the oil gauge value from changing due to thermal expansion and contraction or road bumps, resulting in inaccurate display of the oil gauge value. The float rod surface that has been immersed in oil for a long time can also be cleaned synchronously to avoid the problem of inaccurate oil gauge indication due to stains attached to this surface.

[0027] (2) In the present invention, when the float plate flips, the heights of the two sides thereof are not consistent. The two sides thereof drive the two gears to rotate in the same direction through the two connecting rods. Under the action of meshing transmission, the first movable rod and the second movable rod move in opposite directions, thereby realizing the synchronous flipping of the counterweight ring. The gravity of the counterweight ring will inhibit its own flipping and promote its own horizontal stability. It can also inhibit the abnormal flipping of the float plate, thereby reducing the possibility of abnormal flipping of the float plate due to temperature influence or bumps.

[0028] (3) In the present invention, when the first movable rod and the second movable rod are raised or lowered, the first push plate and the second push plate are driven to rise or fall synchronously, so that fuel flows into and is discharged from the two cleaning chambers respectively, and the fuel in the two cleaning chambers flows in the opposite direction during the flipping and resetting process. In this way, the surface of the float rod that has been immersed in the oil for a long time can be washed with the help of fuel, thereby avoiding the problem of inaccurate oil gauge data caused by stains on the surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a structural schematic diagram of the floating rod in the present invention;

[0032] Figure 3 It is a structural schematic diagram of the float ball ring in the present invention;

[0033] Figure 4 is a schematic diagram of the structure of the suppression component in the present invention;

[0034] Figure 5 It is a structural schematic diagram of the first movable rod in the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the gear in the present invention;

[0036] Figure 7 The present invention Figure 6 A local enlarged structural schematic diagram;

[0037] Figure 8 The present invention Figure 6 A schematic diagram of the local enlarged structure at B;

[0038] Fig. 9 It is an exploded view of the connection structure between the connecting rod and the gear in the present invention.

[0039] In the figure: 1. float rod; 2. flange; 3. bolt; 4. sealing ring; 5. float ball ring; 6. float plate; 7. base; 8. suppression assembly; 801. first movable rod; 802. second movable rod; 803. limit top plate; 804. limit bottom plate; 805. accommodating chamber; 806. connecting rod; 807. gear; 808. stopper; 809. counterweight ring; 810. first ball head rod; 811. second ball head rod; 812. rack; 813. slide groove; 9. cleaning assembly; 901. cleaning chamber; 902. through hole; 903. first push plate; 904. second push plate. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1-Figure 8 As shown, the present invention is a liquid fuel sensing device, comprising:

[0042] A floating rod 1, a flange 2 is fixed to the top thereof, and a base 7 is fixed to the bottom thereof;

[0043] The float ball ring 5 is slidably mounted on the float rod 1, and the float rod 1 is arranged through it. The outer surface of the float ball ring 5 is an arc surface, and a float plate 6 is slidably mounted on the arc surface;

[0044] The suppression component 8 is installed on the float ball ring 5. When the float plate 6 is overturned by the liquid level fluctuation, the suppression component 8 is triggered, and the suppression component 8 provides resistance to the overturning of the float plate 6; and

[0045] The cleaning assembly 9 is connected to the suppression assembly 8 . When the suppression assembly 8 provides resistance to the turning over of the float plate 6 , the cleaning assembly 9 cleans the outer surface of the float rod 1 below the float plate 6 .

[0046] In one case of this embodiment, a sensor is arranged inside the float rod 1, which is the prior art and is not improved in this application. Therefore, it is not necessary to disclose its specific mechanical structure and circuit structure, and it does not affect the integrity of this application. The flange 2 is provided with a plurality of bolts 3 for connecting with the oil tank, and a sealing ring 4 is arranged between the flange 2 and the float rod 1. The flange 2 and the base 7 limit the lifting height of the float ball ring 5.

[0047] When the embodiment is actually applied, after the flange 2 is connected to the oil tank, the float rod 1 is located in the oil, and the float plate 6 floats on the oil surface and rises and falls according to the height of the oil surface. During this process, the float ball ring 5 slides on the surface of the float rod 1, and the oil gauge displays corresponding data; when the oil surface fluctuates abnormally, the float plate 6 will flip over, and the heights of the two sides are inconsistent, that is, the float plate 6 slides on the arc surface of the float ball ring 5. At this time, the float plate 6 will trigger the suppression component 8, and the suppression component 8 provides resistance to the flipping of the float plate 6. At the same time, the suppression component 8 drives the cleaning component 9 to clean the outer surface of the float rod 1 below the float plate 6, which can timely suppress the abnormal flipping of the float plate 6 when the oil surface fluctuates abnormally due to thermal expansion and contraction or road bumps, and avoid the float ball ring 5 from rising and falling due to abnormal fluctuations, thereby avoiding the thermal expansion and contraction or road bumps. Changes in the oil gauge value caused by changes in the oil gauge value, resulting in inaccurate display of the oil gauge value, can also simultaneously clean the surface of the float rod 1 immersed in oil for a long time, and avoid the problem of inaccurate oil gauge indication due to stains attached to this part of the surface.

[0048] like Figure 1-Figure 9 As shown, as a preferred embodiment of the present invention, the suppression component 8 includes:

[0049] A first movable rod 801 is symmetrically arranged with the second movable rod 802, and both the first movable rod 801 and the second movable rod 802 are slidably installed in the float ball ring 5;

[0050] The two accommodating cavities 805 are both opened on the arc surface, and two gears 807 are rotatably installed in the two accommodating cavities 805, respectively, and the two gears 807 are connected to the two sides of the float plate 6 through two connecting rods 806, respectively, and the first movable rod 801 and the second movable rod 802 are both provided with racks 812, and the two racks 812 are respectively meshed with the two gears 807, and the two racks 812 are located between the two gears 807; and

[0051] The counterweight ring 809 is sleeved on the outside of the floating rod 1 and is located above the first movable rod 801 and the second movable rod 802 . The top of the first movable rod 801 and the top of the second movable rod 802 are both rotatably connected to the counterweight ring 809 .

[0052] In one case of this embodiment, two vertically arranged slide grooves 813 are provided in the float ball ring 5, and the two slide grooves 813 are respectively slidably matched with the first movable rod 801 and the second movable rod 802; there is a gap between the counterweight ring 809 and the outer surface of the float rod 1; Fig. 9 As shown, the connecting rod 806 is a T-shaped rod, one end of the short rod of the connecting rod 806 is rotatably mounted on the inner wall of the accommodating cavity 805, and the other end is coaxially fixedly connected to the gear 807, and the long rod of the connecting rod 806 is fixedly connected to the float plate 6. It should be noted that Fig. 9 This is a schematic diagram of the structure of gear 807 and connecting rod 806. In actual production, the two need to be coaxially fixedly connected.

[0053] In actual application of this embodiment, in the initial state, the counterweight ring 809 is arranged horizontally; when the oil level fluctuates abnormally, the float plate 6 will flip over, and the heights of the two sides thereof are inconsistent. Then, the two sides of the float plate 6 respectively drive the two gears 807 to rotate in the same direction through the two connecting rods 806, and drive the two racks 812 to move in the opposite direction through the meshing transmission, that is, the first movable rod 801 and the second movable rod 802 move in the opposite direction; Figure 6 Taking the direction shown as an example, when the oil level fluctuates abnormally, the left side of the float plate 6 drops and the right side rises, then the two gears 807 rotate counterclockwise, and the rack 812 meshed with the left gear 807 rises, while the rack 812 meshed with the right gear 807 drops, causing the first movable rod 801 to rise and the second movable rod 802 to drop. Then the first movable rod 801 and the second movable rod 802 rotate relative to the counterweight ring 809, and the left side of the counterweight ring 809 rises and the right side falls, that is, the counterweight ring 809 flips synchronously, and the flipping direction is opposite to the flipping direction of the float plate 6. The gravity of the counterweight ring 809 will inhibit its own flipping and promote its own horizontal stability, and can inhibit the abnormal flipping of the float plate 6, reducing the possibility of abnormal flipping of the float plate 6 due to temperature influence or bumps.

[0054] like Figure 1-Figure 7 As shown, as a preferred embodiment of the present invention, there is a gap between the first movable rod 801 and the second movable rod 802; the float ball ring 5 includes an inner wall and an outer wall, and the inner wall and the outer wall are connected by a connecting block located in the gap.

[0055] like Figure 3-Figure 7As shown, as a preferred embodiment of the present invention, the suppression assembly 8 also includes a limiting top plate 803 and a limiting bottom plate 804 for limiting the flipping angle of the float plate 6, and the limiting top plate 803 and the limiting bottom plate 804 are respectively fixed to the top and bottom of the float ball ring 5.

[0056] In actual application of this embodiment, when the float plate 6 slides on the arc surface of the float ball ring 5, the arrangement of the limiting top plate 803 and the limiting bottom plate 804 can prevent the float plate 6 from turning over excessively and causing damage to the device.

[0057] like Figure 3-Figure 7 As shown, as a preferred embodiment of the present invention, the top of the first movable rod 801 and the top of the second movable rod 802 are respectively fixed with a first ball head rod 810 and a second ball head rod 811, and the top of the first ball head rod 810 and the top of the second ball head rod 811 are both rotatably connected to the counterweight ring 809.

[0058] In one case of this embodiment, a stopper 808 is disposed on both the first ball head rod 810 and the second ball head rod 811 , and the stopper 808 is located between the counterweight ring 809 and the float plate 6 .

[0059] In practical application, this embodiment is based on Figure 6 Taking the direction shown as an example, when the left side of the float plate 6 descends and the right side rises, the first movable rod 801 rises and the second movable rod 802 descends at the same time, then the first ball head rod 810 rises synchronously and the second ball head rod 811 descends synchronously, and the first ball head rod 810 and the second ball head rod 811 both rotate relative to the counterweight ring 809; the setting of the stop block 808 can avoid the problem of the first movable rod 801 and the second movable rod 802 being hit and broken during movement, thereby ensuring the stability of the device.

[0060] like Figure 1-Figure 8 As shown, as a preferred embodiment of the present invention, the cleaning component 9 includes:

[0061] Cleaning chamber 901, two cleaning chambers 901 are opened at the bottom of the float plate 6, the two cleaning chambers 901 are symmetrically arranged, and a through hole 902 is opened at the bottom;

[0062] A first push plate 903 is slidably mounted in a cleaning chamber 901 and fixed to the bottom of the first movable rod 801; and

[0063] The second push plate 904 is slidably installed in the other cleaning chamber 901 and fixed to the bottom of the second movable rod 802 . The first push plate 903 and the second push plate 904 are symmetrically arranged.

[0064] In actual application of this embodiment, when the first movable rod 801 and the second movable rod 802 are raised and lowered, the first push plate 903 and the second push plate 904 are driven to rise and fall synchronously. Figure 8 Taking the direction shown as an example, when the first movable rod 801 rises, the first push plate 903 rises synchronously, and the second movable rod 802 and the second push plate 904 descend synchronously, then the fuel flows into the cleaning cavity 901 where the first push plate 903 is located through the through hole 902, and at the same time, the fuel is discharged from the cleaning cavity 901 where the second push plate 904 is located through the through hole 902, and then during the resetting process of the first movable rod 801 and the second movable rod 802, the fuel flows in the two cleaning cavities 901 in the opposite direction, and so on and so forth, so that the surface of the float rod 1 immersed in the oil for a long time can be flushed with the help of the fuel while suppressing the float plate 6 from flipping due to fluctuations, so as to avoid the problem of inaccurate oil gauge data caused by stains on its surface.

[0065] like Figure 8 As shown, as a preferred embodiment of the present invention, both the first push plate 903 and the second push plate 904 are in contact with the outer surface of the floating rod 1.

[0066] In actual application of this embodiment, during the lifting and lowering process of the first movable rod 801 and the second movable rod 802, the first push plate 903 and the second push plate 904 can be lifted and lowered synchronously, and the stains attached to the outer surface of the float rod 1 can be scraped off to prevent impurities in the fuel from affecting the sliding of the float ball ring 5 on the surface of the float rod 1, thereby ensuring the accuracy of the fuel gauge data.

[0067] Working principle of the present invention: A liquid fuel sensing device is provided in the above-mentioned embodiment of the present invention. When the oil level fluctuates abnormally, the float plate 6 will flip over, and the heights of the two sides thereof are inconsistent, that is, the float plate 6 slides on the arc surface of the float ball ring 5. At this time, the float plate 6 will trigger the suppression component 8, and the suppression component 8 provides resistance to the flipping of the float plate 6. At the same time, the suppression component 8 drives the cleaning component 9 to clean the outer surface of the float rod 1 below the float plate 6. When the oil level fluctuates abnormally due to thermal expansion and contraction or road bumps, the abnormal flipping of the float plate 6 can be suppressed in time to avoid the rise and fall of the float ball ring 5 due to abnormal fluctuations, thereby avoiding the change of the oil gauge value due to thermal expansion and contraction or road bumps, resulting in inaccurate display of the oil gauge value. The surface of the float rod 1 that has been immersed in oil for a long time can also be cleaned synchronously to avoid the problem of inaccurate oil gauge indication due to stains attached to this part of the surface.

[0068] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A liquid fuel sensing device, characterized in that: include: A floating rod (1) having a flange (2) fixed on its top and a base (7) fixed on its bottom; A float ball ring (5) is slidably mounted on the float rod (1), and the float rod (1) is arranged through it. The outer surface of the float ball ring (5) is an arc surface, and a float plate (6) is slidably mounted on the arc surface; A suppression component (8) is mounted on the float ball ring (5). When the float plate (6) is overturned by liquid level fluctuations, the suppression component (8) is triggered, and the suppression component (8) provides resistance to the overturning of the float plate (6); and A cleaning assembly (9) connected to the suppression assembly (8), when the suppression assembly (8) provides resistance to the turning over of the float plate (6), the cleaning assembly (9) cleans the outer surface of the float rod (1) below the float plate (6); The suppression assembly (8) comprises: A first movable rod (801) is symmetrically arranged with the second movable rod (802), and both the first movable rod (801) and the second movable rod (802) are slidably installed in the float ball ring (5); An accommodating cavity (805), wherein the two accommodating cavities (805) are both opened on an arc surface, and two gears (807) are rotatably installed in the two accommodating cavities (805), respectively, and the two gears (807) are respectively connected to two sides of the float plate (6) through two connecting rods (806), and racks (812) are both arranged on the first movable rod (801) and the second movable rod (802), and the two racks (812) are respectively meshed with the two gears (807), and the two racks (812) are located between the two gears (807); and A counterweight ring (809) is sleeved on the outside of the floating rod (1) and is located above the first movable rod (801) and the second movable rod (802), and the top of the first movable rod (801) and the top of the second movable rod (802) are both rotatably connected to the counterweight ring (809); The float plate (6) turns over, and the counterweight ring (809) turns over synchronously, and the turning direction is opposite to the turning direction of the float plate (6); There is a gap between the first movable rod (801) and the second movable rod (802); the float ball ring (5) comprises an inner wall and an outer wall, and the inner wall and the outer wall are connected via a connecting block located in the gap.

2. A liquid fuel sensing device according to claim 1, characterized in that: The suppression assembly (8) further comprises a limiting top plate (803) and a limiting bottom plate (804) for limiting the flipping angle of the float plate (6); the limiting top plate (803) and the limiting bottom plate (804) are respectively fixed to the top and bottom of the float ball ring (5).

3. A liquid fuel sensing device according to claim 1, characterized in that: A first ball head rod (810) and a second ball head rod (811) are fixed to the top of the first movable rod (801) and the top of the second movable rod (802), respectively. The top of the first ball head rod (810) and the top of the second ball head rod (811) are both rotatably connected to the counterweight ring (809).

4. A liquid fuel sensing device according to claim 3, characterized in that: The first ball head rod (810) and the second ball head rod (811) are both provided with a stopper (808), and the stopper (808) is located between the counterweight ring (809) and the float plate (6).

5. A liquid fuel sensing device according to claim 1, characterized in that: The cleaning component (9) comprises: A cleaning chamber (901), wherein the two cleaning chambers (901) are both opened at the bottom of the float plate (6), the two cleaning chambers (901) are symmetrically arranged, and both have through holes (902) opened at the bottom; A first push plate (903) is slidably mounted in a cleaning chamber (901) and is fixed to the bottom of the first movable rod (801); and The second push plate (904) is slidably installed in another cleaning chamber (901) and is fixed to the bottom of the second movable rod (802). The first push plate (903) and the second push plate (904) are symmetrically arranged.

6. A liquid fuel sensing device according to claim 5, characterized in that: The first push plate (903) and the second push plate (904) are both in contact with the outer surface of the floating rod (1).

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