An oil level sensor for oil tank oil quantity detection

Abstract

The application discloses an oil level sensor for oil tank oil quantity detection, which comprises a sealing plate, a mounting table integrally formed on the upper surface of the sealing plate, a liquid level sensor and a float oil quantity sensor fixed on the lower surface of the mounting table, a connecting rod rotatably arranged on the lower surface of the float oil quantity sensor, a hollow float ball fixed on the lower end of the connecting rod, a positioning pipe arranged in the hollow float ball and fixed on the inside of the positioning pipe, a limiting hole arranged in the center of the hollow float ball, trumpet mouths arranged on both ends of the limiting hole, a limiting rod arranged in the limiting hole, a connecting rod fixed on the upper end of the limiting rod and a limiting plate arranged on the lower end of the connecting rod. The application improves the structure of the float in the existing oil level sensor, can make the float have a larger measuring range, improve the measuring precision of the oil level, can limit the measuring path of the float, and can keep the oil level sensor for a long time of accurate measurement without frequent maintenance, so it is suitable for wide popularization and application.

Description

Technical Field

[0001] This invention relates to the field of liquid level measurement technology, specifically to an oil level sensor for detecting the amount of oil in an oil tank. Background Technology

[0002] Fuel level sensors are used to detect the fuel level in a fuel tank, allowing users to clearly see how much fuel remains and add fuel as needed. Traditional level sensors work by using a float that follows the rise and fall of the fuel surface to measure the level. However, existing sensors do not limit the float's movement, resulting in a erratic floating path that could collide with the tank walls or adversely affect other equipment within the tank. To address this potential issue, cylindrical level sensors are used, where the float is nested within the cylindrical sensor surface using a rubber ring to restrict its movement. However, this method results in a very limited detection range due to the small float's movement range. Furthermore, the viscosity of the fuel in the tank makes the float prone to getting stuck on the cylindrical sensor surface, leading to inaccurate fuel level measurements and requiring regular maintenance and inspection. This undoubtedly hinders the proper functioning of the fuel level sensor. Summary of the Invention

[0003] The purpose of this invention is to provide an oil level sensor for detecting oil level in a fuel tank that can control the floating path of a float and has a good sealing effect.

[0004] This invention is achieved through the following technical solution: an oil level sensor for detecting oil level in a fuel tank, comprising a sealing plate and a mounting platform integrally formed on the upper surface of the sealing plate, a liquid level sensor and a float oil level sensor fixed on the lower surface of the mounting platform, a connecting rod rotatably mounted on the lower surface of the float oil level sensor, a hollow float ball fixed at the lower end of the connecting rod, a positioning tube provided inside the hollow float ball, and the lower end of the connecting rod fixed inside the positioning tube, a limiting hole provided at the center of the hollow float ball, flared openings provided at both ends of the limiting hole, a limiting rod provided inside the limiting hole, a connecting rod fixed at the upper end of the limiting rod, and the connecting rod fixed to the sealing plate, and a baffle plate fixed at the lower end of the limiting rod for blocking the hollow float ball.

[0005] The working principle of this technical solution is as follows: a limiting hole is set inside the hollow float, and a limiting rod is installed inside the limiting hole. This allows the limiting rod to limit the hollow float through the limiting hole, enabling the hollow float to have a large range of movement within the fuel tank. At the same time, the limiting rod restricts the path of the hollow float, preventing it from adversely affecting other equipment in the fuel tank.

[0006] To better realize the present invention, a first sealing groove is further provided at the connection between the sealing plate and the mounting platform, and a first sealing ring is installed inside the first sealing groove. A second sealing groove is provided on the upper surface of the sealing plate, and a second sealing ring is installed inside the second sealing groove. A limiting ring is integrally formed on the lower surface of the second sealing ring, and the limiting ring is located inside the second sealing groove.

[0007] To better realize the present invention, the cross-sections of the second sealing groove and the limiting rubber ring are both isosceles trapezoids.

[0008] To better realize the present invention, the centers of the second sealing ring and the first sealing ring are further aligned.

[0009] To better realize the present invention, the limiting rod is further described as an arc-shaped rod structure, and the center of the limiting rod coincides with the rotation axis of the connecting rod.

[0010] To better realize the present invention, the limiting hole is further defined as arc-shaped, and the center of the limiting hole coincides with the center of the limiting rod, and the inner diameter of the limiting hole is 1mm larger than the outer diameter of the limiting rod.

[0011] To better realize the present invention, a contact is further provided on the upper surface of the mounting platform.

[0012] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0013] (1) The present invention uses a limiting hole provided inside the hollow float and a limiting rod installed inside the limiting hole, so that the limiting rod can limit the hollow float through the limiting hole, so that the hollow float can have a large space for movement in the oil tank. At the same time, the limiting rod restricts the path of the hollow float, so as to avoid the hollow float from causing adverse effects on other equipment in the oil tank.

[0014] (2) The present invention provides a first sealing ring installed in a first sealing groove at the connection between the sealing plate and the mounting platform, and a second sealing ring installed in a second sealing groove on the upper surface of the sealing plate. This facilitates the cooperation between the first and second sealing rings and increases the sealing performance when the sealing plate is installed with the oil tank. At the same time, the limiting ring integrally formed on the lower surface of the second sealing ring is installed inside the second sealing groove, which increases the stability of the second sealing ring installed in the second sealing groove.

[0015] (3) The present invention improves the structure of the float in the existing oil level sensor, which not only enables the float to have a larger measurement range and improves the measurement accuracy of the oil level, but also restricts the measurement path of the float, solves the technical defects that have always existed in the float of the existing oil level sensor, and enables the oil level sensor to maintain accurate measurement for a longer period of time without frequent maintenance, making it suitable for widespread application. Attached Figure Description

[0016] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional structural diagram of the sealing plate and mounting platform in this invention;

[0019] Figure 3 This is a partial structural cross-sectional view of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the second sealing ring in this invention;

[0021] Figure 5 This is a three-dimensional structural diagram of the first sealing ring in this invention;

[0022] Figure 6 This is an enlarged structural diagram of point A in this invention.

[0023] Wherein: 1—sealing plate, 2—mounting platform, 3—liquid level sensor, 4—float oil level sensor, 5—connecting rod, 6—hollow float, 7—positioning tube, 8—limiting hole, 9—flare mouth, 10—connecting rod, 11—limiting rod, 12—baffle, 13—contact, 14—first sealing groove, 15—first sealing ring, 16—second sealing groove, 17—second sealing ring, 18—limiting ring. Detailed Implementation

[0024] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, the terms "first" and "second" are limited to descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly including one or more of the feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] Example 1:

[0028] The main structure of this embodiment is as follows: Figure 1 , Figure 2 As shown, the device includes a sealing plate 1 and a mounting platform 2 integrally formed on the upper surface of the sealing plate 1. A liquid level sensor 3 and a float oil level sensor 4 are fixed on the lower surface of the mounting platform 2. A connecting rod 5 is rotatably mounted on the lower surface of the float oil level sensor 4. A hollow float 6 is fixed to the lower end of the connecting rod 5. A positioning tube 7 is provided inside the hollow float 6, and the lower end of the connecting rod 5 is fixed inside the positioning tube 7. A limiting hole 8 is provided in the center of the hollow float 6. A flared mouth 9 is provided at both ends of the limiting hole 8. A limiting rod 11 is provided inside the limiting hole 8. A connecting rod 10 is fixed to the upper end of the limiting rod 11, and the connecting rod 10 is fixed to the sealing plate 1. A baffle 12 for blocking the hollow float 6 is fixed to the lower end of the limiting rod 11.

[0029] In a specific implementation, the first sealing ring 15 is installed inside the first sealing groove 14, the limiting ring 18 is installed inside the second sealing groove 16, and the mounting platform 2 is screwed into the oil tank. When oil is injected into the oil tank, the hollow float 6 rotates with the connecting rod 5 under the buoyancy of the oil. At this time, the liquid level sensor 3 and the float oil quantity sensor 4 cooperate to detect the oil quantity inside the oil tank. When the hollow float 6 rises, the hollow float 6 is limited by the limiting rod 11. At this time, the limiting hole 8 set in the center of the hollow float 6 slides on the surface of the limiting rod 11.

[0030] Example 2:

[0031] This embodiment, based on the above embodiment, further defines the connection relationship between the sealing plate 1 and the mounting platform 2. As shown in the figure, a first sealing groove 14 is provided at the connection between the sealing plate 1 and the mounting platform 2. A first sealing ring 15 is installed inside the first sealing groove 14. A second sealing groove 16 is provided on the upper surface of the sealing plate 1. A second sealing ring 17 is installed inside the second sealing groove 16. A limiting ring 18 is integrally formed on the lower surface of the second sealing ring 17, and the limiting ring 18 is located inside the second sealing groove 16. The first sealing ring 15 installed in the first sealing groove 14 at the connection between the sealing plate 1 and the mounting platform 2, and the second sealing ring 17 installed in the second sealing groove 16 on the upper surface of the sealing plate 1, facilitate the cooperation of the first sealing ring 15 and the second sealing ring 17, increasing the sealing performance when the sealing plate 1 is installed with the oil tank. At the same time, the limiting ring 18 integrally formed on the lower surface of the second sealing ring 17 is installed inside the second sealing groove 16, increasing the stability of the second sealing ring 17 installed in the second sealing groove 16. Other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0032] Example 3:

[0033] This embodiment, based on the above embodiment, further defines the shapes of the second sealing groove 16 and the limiting rubber ring 18, such as... Figure 2 , Figure 6 As shown, the cross-sections of the second sealing groove 16 and the limiting rubber ring 18 are both isosceles trapezoids. This arrangement allows for a better sealing relationship between the second sealing groove 16 and the limiting rubber ring 18; preferably, both the second sealing groove 16 and the limiting rubber ring 18 have isosceles trapezoidal cross-sections. The other parts of this embodiment are the same as those in the above embodiments and will not be described again.

[0034] Example 4:

[0035] This embodiment, based on the above embodiment, further defines the positional relationship between the second sealing ring 17 and the first sealing ring 15, such as... Figure 2As shown, the centers of the second sealing ring 17 and the first sealing ring 15 coincide. This arrangement further ensures a good seal between the second sealing ring 17 and the first sealing ring 15; preferably, the centers of the second sealing ring 17 and the first sealing ring 15 coincide. The other parts of this embodiment are the same as those in the above embodiments and will not be repeated.

[0036] Example 5:

[0037] This embodiment, based on the above embodiment, further defines the structural and positional relationship of the limiting rod 11, such as... Figure 1 , Figure 3 As shown, the limiting rod 11 is an arc-shaped rod structure, and the center of the limiting rod 11 coincides with the rotation axis of the connecting rod 5. The other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0038] Example 6:

[0039] This embodiment further defines the structure of the hollow float 8 based on the above embodiment, such as... Figure 3 As shown, the limiting hole 8 is arc-shaped, and the center of the limiting hole 8 coincides with the center of the limiting rod 11. Furthermore, the inner diameter of the limiting hole 8 is 1 mm larger than the outer diameter of the limiting rod 11. Other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0040] Example 7:

[0041] This embodiment, based on the above embodiment, further adds a contact 13, such as... Figure 1 As shown, a contact 13 is mounted on the upper surface of the mounting platform 2. The other parts of this embodiment are the same as those in the above embodiment and will not be described again.

[0042] It is understood that the working principle and process of the oil level sensor structure according to an embodiment of the present invention, such as the float oil level sensor 4 and the contact 13, are existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0043] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An oil level sensor for oil tank level detection, characterized by, The utility model relates to a sealing plate (1) and the mounting table (2) of the integral forming of sealing plate (1) upper surface, liquid level sensor (3) and float oil volume sensor (4) of mounting table (2) lower surface fixation, float oil volume sensor (4) lower surface rotatory installation have connecting rod (5), the lower end of connecting rod (5) is fixed with hollow float ball (6), the inside of hollow float ball (6) is provided with positioning pipe (7), and the lower end of connecting rod (5) is fixed in the inside of positioning pipe (7), the center of hollow float ball (6) is provided with limiting hole (8), both ends of limiting hole (8) are provided with horn mouth (9), the inside of limiting hole (8) is provided with limiting rod (11), the upper end of limiting rod (11) is fixed with connecting rod (10), and connecting rod (10) is fixed with sealing plate (1), the lower end of limiting rod (11) is fixed with the baffle (12) for the blocking of hollow float ball (6);Limiting rod (11) is arc rod structure, and the center of limiting rod (11) coincides with the rotation axis of connecting rod (5);Limiting hole (8) is arc, and the center of limiting hole (8) and the center of limiting rod (11) coincide.

2. The oil level sensor for oil tank level detection according to claim 1, characterized in that, The first sealing groove (14) is arranged at the connecting position of the sealing plate (1) and the mounting table (2), and the first sealing rubber ring (15) is arranged in the first sealing groove (14).

3. The oil level sensor for oil tank level detection according to claim 2, characterized in that, The second sealing groove (16) and the limiting rubber ring (18) are isosceles trapezoidal in cross section.

4. The oil level sensor for oil tank level detection according to claim 2, characterized in that, The center of the second sealing rubber ring (17) and the first sealing rubber ring (15) coincides.

5. The oil level sensor for oil tank level detection according to claim 1, characterized in that, The inner diameter of the limiting hole (8) is 1mm larger than the outer diameter of the limiting rod (11).

6. The oil level sensor for oil tank fuel level detection according to claim 1 or 2, characterized in that, The upper surface of the mounting table (2) is provided with the contact (13).

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