Filter screen cylinder, oil tank and vehicle

Abstract

The utility model discloses a filter screen cylinder, oil tank and vehicle, including flange ring, the downside of flange ring is fixedly connected with the link ring, the lower end of link ring is connected with the outer tube, and the bottom of outer tube is fixedly provided with the flange that goes in, the inner wall of link portion still is fixedly connected with the inner tube, and the lower end in the inner tube is fixedly connected with the guide cone, is provided with the filter hole on the circumference wall of inner tube, and the interval that has between inner tube and outer tube, and the flange extends to the below of inner tube. The utility model discloses need not to replace the whole oil tank, just replace the filter screen cylinder in the oil filler of oil tank, can play better theftproof effect, and the structure strength is higher, and it is not easy to be similar to the object of crowbar and impact damage.

Description

Technical Field

[0001] This utility model relates to the field of vehicle fuel tank technology, and in particular to a filter cylinder, a fuel tank, and a vehicle. Background Technology

[0002] See Figure 1 This is a cross-sectional view of the fuel tank structure of an existing vehicle, especially a truck. The fuel tank body 10 is provided with a filler neck 11. A mounting ring 12 is provided inside the filler neck 11. A filter screen 20 is installed on the mounting ring 12. The filter screen 20 plays a certain filtering role to prevent particulate matter from falling into the fuel tank body 10 from the filler neck 11 during refueling.

[0003] In an overseas highway project, our project team has 34 dump trucks, 4 water trucks and 2 light trucks. The theft of vehicle fuel often occurs. In order to prevent the theft of vehicle fuel, the technicians proposed a filter screen based on the actual situation on site.

[0004] After searching, most current solutions for preventing theft of fuel in vehicle fuel tanks involve modifying the fuel tank itself. For example, CN222329459U discloses an anti-theft fuel tank for fuel trucks. Although this type of fuel tank can prevent fuel theft, it requires replacing the entire fuel tank, which involves significant modification costs.

[0005] In addition, there are modifications targeting the fuel filler neck. For example, CN201415612Y discloses an anti-theft fuel filler pipe for automobile fuel tanks. By fixing a disc to the lower end of the pipe, when a thief breaks the cap of the pipe and removes the filter screen, the fuel pipe cannot enter the fuel tank through the disc, thus increasing the difficulty of theft. Its shortcomings are: there is a gap between the disc and the pipe. When the fuel pipe is a flexible hose, it can pass through the gap between the disc and the pipe. In addition, if the disc is impacted by an object similar to a pry bar, the connection structure between the disc and the pipe can be easily damaged. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a filter screen that does not require replacing the entire fuel tank. Only the filter screen inside the fuel tank filler neck needs to be replaced to achieve a better anti-theft effect. In addition, the structure is stronger and is not easily damaged by objects such as pry bars.

[0007] Another technical problem to be solved by this utility model is to provide an oil tank that uses this filter screen cylinder.

[0008] Another technical problem to be solved by this utility model is to provide a vehicle that uses this type of fuel tank.

[0009] To achieve the above objectives, this application provides a filter cylinder, including a flange ring, a connecting ring fixedly connected to the lower side of the flange ring, an outer cylinder connected to the lower end of the connecting ring, and an inwardly protruding flange fixedly provided at the bottom of the outer cylinder; an inner cylinder is also fixedly connected to the inner wall of the connecting part, a guide cone is fixedly connected to the lower end of the inner cylinder, filter holes are provided on the circumferential wall of the inner cylinder, there is a gap between the inner cylinder and the outer cylinder, and the flange extends to the bottom of the inner cylinder.

[0010] The connecting ring includes a first conical portion, which is a conical ring structure that is larger at the top and smaller at the bottom. The lower end of the first conical portion is connected to a connecting portion. The outer circumference of the connecting portion is connected to the outer cylinder, and the inner circumference of the connecting portion is connected to the inner cylinder.

[0011] The connecting part is the second cone part, which is a cone-ring structure that is smaller at the top and larger at the bottom.

[0012] The connecting part is a support ring.

[0013] The connecting part is provided with a vent hole.

[0014] The inner circumference of the flange is also provided with an upwardly extending retaining ring.

[0015] The flange is provided with a leakage hole.

[0016] The flange ring is provided with mounting holes.

[0017] A fuel tank includes a fuel tank body, a fuel filler port on the fuel tank body, and a filter screen cylinder installed and fixed inside the fuel filler port.

[0018] A vehicle equipped with the aforementioned fuel tank.

[0019] Compared with the prior art, the above-conceptual technical solution conceived in this application has the following beneficial effects: 1. The guide cone of this utility model is used to deflect the impact force of the pry bar. As shown in the figure, when the pry bar impacts the filter cylinder, the end of the pry bar will collide with the guide cone, causing the end of the pry bar to slide to one side. If the guide cone is damaged from the inner cylinder, as shown in the figure, the end of the pry bar will be blocked by the flange at the bottom of the outer cylinder. Because the outer cylinder and flange are made of thicker steel, the pry bar is less likely to damage the flange, and the oil suction pipe is also difficult to insert due to the obstruction of the flange. Furthermore, the process of using the pry bar to break the filter cylinder will produce noise, making it easier for on-duty personnel to detect.

[0020] 2. The inner circumference of the flange of this utility model is also provided with an upwardly extending retaining ring, which is spaced from the inner cylinder; or, the retaining ring extends into the inner cylinder, but there is still a gap between the retaining ring and the inner cylinder. In this way, it can not only refuel normally, but also increase the difficulty of inserting the oil suction pipe. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a cross-sectional view of the fuel tank structure of an existing truck.

[0023] Figure 2 This is a three-dimensional structural diagram of one embodiment of the filter screen cylinder of this utility model.

[0024] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of AA.

[0025] Figure 4 This is a cross-sectional structural diagram of another embodiment of the filter screen cylinder of this utility model.

[0026] Figure 5 This is a cross-sectional structural diagram of an oil tank equipped with the filter screen cylinder of this utility model.

[0027] Figure 6 This is a schematic diagram of an oil tank equipped with the filter screen cylinder of this utility model being impacted by a pry bar.

[0028] Figure 7 This is a schematic diagram of an oil tank equipped with the filter screen of this utility model being damaged by a pry bar.

[0029] Figure Labels Crowbar 1; 10. Fuel tank body; 11. Filling port; 12. Support flange; Filter screen cylinder 20, flange ring 21, mounting hole 211, connecting ring 22, first cone 221, second cone 222, vent hole 223, support ring 224, outer cylinder 23, flange 24, leakage hole 241, retaining ring 25, inner cylinder 26, filter hole 261, guide cone 27. Detailed Implementation

[0030] To more clearly illustrate the purpose, technical solution, and beneficial effects of this application, a further detailed description of this application is provided below in conjunction with illustrations and specific embodiments. It should be noted that the specific embodiments described below are only used to explain the technical content of this application and do not constitute a limitation on the scope of protection of this application.

[0031] Regarding the explanation of terminology: In this application, "and / or" is used to describe the relationship between related objects, covering three possible situations: taking "A and / or B" as an example, it can indicate the situation where only A exists, A and B exist simultaneously, or only B exists; the symbol " / " indicates the "or" relationship between related objects, such as "A / B" which refers to A or B.

[0032] Regarding the description of the embodiments: The terms "exemplary" and "for example" appearing in this application are only used to illustrate the technical solutions through specific examples. It should be particularly emphasized that any implementation method or design scheme marked as "exemplary" or "for example" should not be construed as having an advantage over other solutions. Such expressions are only used to present the technical concepts more intuitively.

[0033] Example 1: See Figure 2 , 3 4. This embodiment provides a filter cylinder 20, including a flange ring 21, a connecting ring 22 welded to the lower side of the flange ring 21, an outer cylinder 23 welded to the lower end of the connecting ring 22, and an inward flange 24 fixed to the bottom of the outer cylinder 23; an inner cylinder 26 is also welded to the inner wall of the connecting ring 22, a guide cone 27 is welded to the lower end of the inner cylinder 26, filter holes 261 are provided on the circumferential wall of the inner cylinder 26, there is a gap between the inner cylinder 26 and the outer cylinder 23, and the flange 24 extends to the lower part of the inner cylinder 26.

[0034] Flange ring 21 is used to install and fix the inner wall of the filler port 11 of the oil tank 10, for example, by welding. During welding, the oil tank needs to be emptied and cleaned to prevent safety accidents.

[0035] When the flange ring 21 is provided with mounting holes 211, the flange ring 21 can be installed onto the support flange 12 inside the filler neck 11 by riveting. The support flange 12 inside the filler neck 11 is a structure that is already present in the filler neck 11 of the fuel tank, and its function is also to install the original filter screen.

[0036] Guide cone 27 is used to absorb the impact force of pry bar 1, see [link / reference]. Figure 6 When the pry bar 1 impacts the filter cylinder 20, the end of the pry bar 1 will collide with the guide cone 27, causing the end of the pry bar 1 to slide to one side. If the guide cone 27 is damaged from the inner cylinder 26, see [link to relevant documentation]. Figure 7 The end of the pry bar 1 will be blocked by the flange 24 at the bottom of the outer cylinder 23. Since the outer cylinder 23 and the flange 24 are made of thicker steel, the pry bar 1 is not easy to damage the flange 24. Due to the obstruction of the flange 24, the oil suction pipe is also difficult to insert. In addition, the process of using the pry bar 1 to break the pipe will also make a sound, making it easier for the on-duty personnel to detect.

[0037] This invention does not require replacing the entire fuel tank; simply replacing the filter screen inside the fuel filler neck provides better anti-theft protection and enhances structural strength, making it less susceptible to damage from objects like pry bars.

[0038] See Figure 3The connecting ring 22 includes a first cone portion 221, which is a cone ring structure with a larger upper part and a smaller lower part. The lower end of the first cone portion 221 is connected to a connecting part. The outer circumference of the connecting part is connected to the outer cylinder 23, and the inner circumference of the connecting part is connected to the inner cylinder 26.

[0039] In this embodiment, Figure 3 In the middle, the connecting part is the second cone 222, which is a cone ring structure with a smaller upper part and a larger lower part.

[0040] In this embodiment, a vent 223 is provided on the connecting part so that the oil entering the outer cylinder 23 can flow into the oil tank during refueling.

[0041] Example 2: The difference between this embodiment and the previous embodiment is that, see [link to previous embodiment]. Figure 4 The connecting part is a support ring 224.

[0042] Example 3: Based on Example 1 or Example 2, see Figure 3 The inner circumference of the flange 24 is also provided with an upwardly extending retaining ring 25. The retaining ring 25 is spaced from the inner cylinder 26. Alternatively, the retaining ring 25 may extend into the inner cylinder 26, with a gap still existing between the retaining ring 25 and the inner cylinder 26. This allows for normal refueling while increasing the difficulty of inserting the oil suction pipe.

[0043] Furthermore, a drain hole 241 is provided on the flange 24 so that all the oil in the flange 24 flows into the oil tank. The diameter of the drain hole 241 is 2 to 3 mm.

[0044] Example 4: Based on Example 1, Example 2, or Example 3, see [link to example]. Figure 5 This embodiment also proposes an oil tank, including an oil tank body 10, an oil filling port 11 provided on the oil tank body 10, and a filter screen cylinder 20 fixedly installed inside the oil filling port 11.

[0045] In one embodiment, flange ring 21 is used for welding to the inner wall of the filler port 11 of the fixed oil tank 10. During welding, the oil tank needs to be emptied and cleaned to prevent accidents.

[0046] When the flange ring 21 is provided with mounting holes 211, the flange ring 21 can be fixedly installed onto the support flange 12 inside the filler neck 11 by rivets. The support flange 12 inside the filler neck 11 is a structure that is already present in the filler neck 11 of the fuel tank, and its function is also to install the original filter screen.

[0047] Example 5: Based on Example 4, this example also proposes a vehicle equipped with a fuel tank as described in Example 4.

[0048] The working principle or process of this utility model: See Figure 6 The guide cone 27 is used to deflect the impact force of the pry bar 1. When the pry bar 1 impacts the filter cylinder 20, the end of the pry bar 1 will collide with the guide cone 27, causing the end of the pry bar 1 to slide to one side.

[0049] If the guide cone 27 and the inner cylinder 26 are damaged, see Figure 7 The end of the pry bar 1 will be blocked by the flange 24 at the bottom of the outer cylinder 23. Since the outer cylinder 23 and the flange 24 are made of thicker steel, the pry bar 1 will not easily damage the flange 24. Due to the obstruction of the flange 24 and the retaining ring 25, the oil suction pipe will also be difficult to insert into the oil tank. In addition, the process of using the pry bar 1 to break the tank will also make noise, making it easier for the on-duty personnel to detect.

[0050] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A filter cylinder (20), comprising a flange ring (21), characterized in that: A connecting ring (22) is fixedly connected to the lower side of the flange ring (21). The lower end of the connecting ring (22) is connected to the outer cylinder (23). An inward flange (24) is fixedly provided at the bottom of the outer cylinder (23). An inner cylinder (26) is also fixedly connected to the inner wall of the connecting ring (22). A guide cone (27) is fixedly connected to the lower end of the inner cylinder (26). A filter hole (261) is provided on the circumferential wall of the inner cylinder (26). There is a gap between the inner cylinder (26) and the outer cylinder (23). The flange (24) extends to the bottom of the inner cylinder (26).

2. The filter cylinder (20) according to claim 1, characterized in that: The connecting ring (22) includes a first cone (221), which is a cone ring structure with a larger upper part and a smaller lower part. The lower end of the first cone (221) is connected to a connecting part. The outer circumference of the connecting part is connected to the outer cylinder (23), and the inner circumference of the connecting part is connected to the inner cylinder (26).

3. A filter cylinder (20) according to claim 2, characterized in that: The connecting part is the second cone part (222), which is a cone ring structure with a smaller upper part and a larger lower part.

4. A filter cylinder (20) according to claim 2, characterized in that: The connecting part is a support ring (224).

5. A filter cylinder (20) according to claim 2, characterized in that: The connecting part is provided with a vent (223).

6. A filter cylinder (20) according to claim 1, characterized in that: The inner circumference of the flange (24) is also provided with an upwardly extending retaining ring (25).

7. A filter cylinder (20) according to claim 6, characterized in that: The flange (24) is provided with a leakage hole (241).

8. A filter cylinder (20) according to claim 1, characterized in that: The flange ring (21) is provided with mounting holes (211).

9. A fuel tank, comprising a fuel tank body (10), wherein a fuel filler port (11) is provided on the fuel tank body (10), characterized in that: The oil filling port (11) is equipped with a filter screen cylinder (20) as described in any one of claims 1 to 8.

10. A vehicle, characterized in that: It is equipped with a fuel tank as described in claim 9.

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