Anti-theft and anti-pumping type oil tank filter screen of excavator

Abstract

The utility model discloses an anti-theft and anti-pumping type oil tank filter screen of an excavator, and relates to the technical field of oil tank filter screens. The anti-theft and anti-pumping type oil tank filter screen of the excavator comprises a shell, a filter element is inserted into the shell, a sliding groove is formed in the inner side wall of the filter element, a cleaning mechanism is slidably connected into the sliding groove, a sealing plug is inserted into the filter element, a protective cover is fixedly connected to the upper surface of the sealing plug, and an anti-theft mechanism is fixedly connected to the outer surface of the protective cover. By means of the cleaning mechanism, after oil is filtered through the filter element, filter residues can be filtered on the filter element, when the filter residues need to be cleaned, a pull ring on the cleaning mechanism is pulled out, the cleaning mechanism is pulled out, the filter residues can be taken out, the filter residues can be taken out under the condition that the whole oil tank filter screen does not need to be disassembled, convenience is improved, and the oil tank filter screen is convenient to clean. And the situation that when the filter screen is taken out, external impurities are brought into the oil tank, secondary pollution is caused, and the cleanliness of oil liquid is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fuel tank filter technology, specifically an anti-theft and anti-squeezing fuel tank filter for excavators. Background Technology

[0002] Fuel tank filters are important devices used to filter impurities and contaminants from liquids (such as fuel or lubricating oil). They are widely used in various machinery and vehicles, including excavators, automobiles, and ships. Excavator fuel tank filters are an important component to ensure the normal operation of excavators and protect the hydraulic system.

[0003] An investigation revealed that a Chinese utility model patent discloses an anti-theft and anti-sucking fuel tank filter (publication number: CN202345375U), comprising: a filter element made of metal sheet, cylindrical in shape; an inclined plate set at a 45-degree angle inside the filter element; a concentric ring mounted above the cylindrical filter element as a support, the inner diameter of the ring being the outer diameter of the cylinder, the outer diameter of the ring being determined according to the inner diameter of the refueling neck; a telescopic joint with retractable ends installed at the bottom of the cylindrical filter element, fixed to the bottom by welding; the components are assembled by welding; a fuel tank filter retaining ring is provided inside the fuel tank, the support ring cooperating with the telescopic joint to form a locking structure. This utility model aims to effectively prevent fuel theft devices from entering the fuel tank and sucking out fuel by utilizing an anti-theft and anti-sucking fuel tank filter. Simultaneously, the locking device effectively prevents the fuel tank filter from being pulled out, thus providing a security protection function.

[0004] In the aforementioned patent, although the locking device can effectively prevent the oil tank filter from being pulled out, thus playing a safety protection role, when using the filter element to filter oil, residual residue will be filtered inside the filter element. When removing the residual residue inside the filter element, the entire oil tank filter screen needs to be removed. When removing the filter screen, external impurities may be brought into the oil tank, causing secondary pollution and affecting the cleanliness of the oil. It is not convenient to remove the filter residue inside the filter element separately for cleaning, lacking convenience.

[0005] Therefore, this utility model provides an anti-theft and anti-squeezing type fuel tank filter for excavators to solve the above problems. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an anti-theft and anti-squeezing fuel tank filter for excavators, solving the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: an anti-theft and anti-squeezing fuel tank filter for excavators, comprising a shell, a filter element inserted inside the shell, a groove formed on the inner side wall of the filter element, a cleaning mechanism slidably connected inside the groove, a sealing plug inserted inside the filter element, a protective cover fixedly connected to the upper surface of the sealing plug, and an anti-theft mechanism fixedly connected to the outer surface of the protective cover;

[0008] The cleaning mechanism includes a slider, the outer surface of which is slidably connected to the inside of a groove. A filter plate A is fixedly connected to one side of the slider, and a support base is fixedly connected to the bottom of the filter plate A. A tension rod is fixedly connected to the upper surface of the slider, and a groove is formed on the inner side wall of the tension rod. A pull ring is rotatably connected inside the groove.

[0009] A further improvement of the present invention is that the anti-theft mechanism includes a rotating block A, one end of which is fixedly connected to the outer surface of the protective cover. A rotating block B is rotatably connected to one side of the rotating block A via a rotating rod. A threaded sleeve is fixedly connected to one end of the rotating block B. A fixing bolt A is threadedly connected inside the threaded sleeve. A threaded groove is formed on the surface of the threaded sleeve. A threaded sleeve is fixedly connected inside the threaded groove. The upper surface of the threaded sleeve is fixedly connected to the bottom of the threaded head of the fixing bolt A.

[0010] A further improvement of this utility model is that: a groove is provided at the bottom of the outer shell, and a B filter plate is fixedly connected inside the groove, and the surface of the B filter plate is provided with fine holes.

[0011] A further improvement of this utility model is that: a threaded hole is provided on the upper surface of the outer shell, and a B fixing bolt is threadedly connected inside the threaded hole.

[0012] A further improvement of this utility model is that: a rubber sleeve is fixedly connected to the outer surface of the sealing plug, and anti-slip protrusions are fixedly connected to the outer surface of the rubber sleeve.

[0013] A further improvement of this utility model is that: both the outer surface of the outer shell and the outer surface of the filter element are provided with filter holes, and a filter screen is fixedly connected inside the filter holes.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The cleaning mechanism filters the oil using the filter element, and the filter residue will be filtered onto the filter element. When the filter residue needs to be cleaned, pull the pull ring on the cleaning mechanism to pull out the cleaning mechanism and remove the filter residue. The filter residue can be removed without disassembling the entire oil tank filter screen, which improves convenience and avoids bringing external impurities into the oil tank when removing the filter screen, thus causing secondary pollution and affecting the cleanliness of the oil.

[0016] 2. The anti-theft mechanism, when the protective cover is closed, will tighten and seal the cover and the outer shell. The anti-theft mechanism is equipped with a fixing bolt and a threaded sleeve for double fixation, which reduces the vibration of the oil tank filter caused by the excavator during operation, thus preventing the protective cover from falling off. The anti-theft mechanism can prevent theft and also prevent theft. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of an excavator's anti-theft and anti-squeezing fuel tank filter;

[0018] Figure 2 A schematic diagram of the outer shell of the anti-theft and anti-squeezing fuel tank filter screen for excavators;

[0019] Figure 3 This is a schematic diagram of the installation of fixing bolt A in the anti-theft and anti-squeezing type fuel tank filter of an excavator;

[0020] Figure 4 A schematic diagram of the filter element in the anti-theft and anti-squeezing fuel tank filter of an excavator;

[0021] Figure 5 This is a schematic diagram of the protective cover in the anti-theft and anti-squeezing type fuel tank filter of an excavator.

[0022] In the diagram: 1. Outer shell; 2. Filter element; 3. Sealing plug; 4. Protective cover; 5. Slider; 6. Filter plate A; 7. Support base; 8. Tension rod; 9. Pull ring; 10. Rotating block A; 11. Rotating rod; 12. Rotating block B; 13. Threaded sleeve; 14. Fixing bolt A; 15. Threaded sleeve; 16. Filter plate B; 17. Fixing bolt B; 18. Rubber sleeve. Detailed Implementation

[0023] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0024] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0025] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0026] Reference Figures 1-5 This utility model provides two technical solutions:

[0027] Example 1:

[0028] An anti-theft and anti-squeezing fuel tank filter for excavators includes an outer shell 1, a filter element 2 inserted inside the outer shell 1, a groove opened on the inner side wall of the filter element 2, a cleaning mechanism slidably connected inside the groove, a sealing plug 3 inserted inside the filter element 2, a protective cover 4 fixedly connected to the upper surface of the sealing plug 3, and an anti-theft mechanism fixedly connected to the outer surface of the protective cover 4.

[0029] The cleaning mechanism includes a slider 5, the outer surface of which is slidably connected to the inside of the groove. A filter plate 6 is fixedly connected to one side of the slider 5, a support base 7 is fixedly connected to the bottom of the filter plate 6, and a tension rod 8 is fixedly connected to the upper surface of the slider 5. A groove is formed on the inner side wall of the tension rod 8, and a pull ring 9 is rotatably connected inside the groove.

[0030] After the oil is filtered by filter element 2, the filter residue will be filtered onto filter element 2. When the filter residue needs to be cleaned, pull the pull ring 9 on the cleaning mechanism to pull out the cleaning mechanism, which can remove the filter residue. The filter residue can be removed without disassembling the entire oil tank filter screen, which improves convenience and avoids bringing external impurities into the oil tank when removing the filter screen, thereby causing secondary pollution and affecting the cleanliness of the oil.

[0031] Example 2:

[0032] Based on Example 1:

[0033] The anti-theft mechanism includes a rotating block A 10, one end of which is fixedly connected to the outer surface of the protective cover 4. A rotating block B 12 is rotatably connected to one side of the rotating block A 10 via a rotating rod 11. A threaded sleeve 13 is fixedly connected to one end of the rotating block B 12. A fixing bolt A 14 is threadedly connected inside the threaded sleeve 13. A threaded groove is formed on the surface of the threaded sleeve 13. A threaded sleeve 15 is fixedly connected inside the threaded groove. The upper surface of the threaded sleeve 15 is fixedly connected to the bottom of the threaded head of the fixing bolt A 14. When the protective cover 4 is closed, the anti-theft mechanism is used to twist and seal the protective cover 4 and the outer shell 1. The anti-theft mechanism is equipped with a fixing bolt A 14 and a threaded sleeve 15 for double fixation, which reduces the vibration of the oil tank filter screen caused by the excavator during operation, thus preventing the protective cover 4 from falling off. The anti-theft mechanism can prevent theft and also prevent theft.

[0034] The bottom of the outer casing 1 has a groove, and a B filter plate 16 is fixedly connected inside the groove. The surface of the B filter plate 16 has fine holes. The B filter plate 16 can filter the oil. After multiple filtrations, the cleanliness of the oil can be improved.

[0035] The upper surface of the outer casing 1 is provided with a threaded hole, and the inner thread of the threaded hole is connected to a B fixing bolt 17. The outer casing 1 is placed inside the oil drum of the excavator, and the outer casing 1 is fixed to the excavator by using the B fixing bolt 17.

[0036] A rubber sleeve 18 is fixedly connected to the outer surface of the sealing plug 3. Anti-slip protrusions are fixedly connected to the outer surface of the rubber sleeve 18. The rubber sleeve 18 can increase the sealing performance and prevent impurities from entering the oil drum due to poor sealing effect when the excavator is working, thus affecting the cleanliness of the oil.

[0037] Both the outer surface of the outer shell 1 and the outer surface of the filter element 2 are provided with filter holes. A filter screen is fixedly connected inside the filter holes. The filter holes play a filtering role and can filter out the filter residue, preventing the filter residue from entering the excavator.

[0038] Based on Embodiments 1 and 2: The outer casing 1 is placed inside the excavator's oil drum, and fixed to the excavator using fixing bolt B 17. Then, the filter element 2 is placed inside the outer casing 1. When oil filtration is needed, oil is poured into the filter element 2 and filtered by filter plate A 6, flowing into filter element 2 for further filtration. The oil then flows back into the outer casing 1 and is filtered again by filter plate B 16. Through these multiple filtration steps, the cleanliness of the oil is maintained. After filtration, filter residue remains on filter plate A 6. To remove the filter residue, pull ring 9 is pulled. Pull ring 9 drives the tension rod 8 upwards, causing filter plate A 6 to slide within filter element 2 via slider 5, thus pulling out filter plate A 6 and removing the filter residue, achieving a cleaning effect without needing to re-expose the oil tank filter. When the body is disassembled, the filter residue can be removed to improve convenience and prevent external impurities from being brought into the oil tank when removing the filter screen, thus avoiding secondary pollution and affecting the cleanliness of the oil. After removing the filter residue, the A filter plate 6 is pushed into the filter element 2. Then, the sealing plug 3 is placed inside the filter element 2, and the protective cover 4 is used for protection. The threaded sleeve 13 is rotated. The threaded sleeve 13 can be reversed through the A rotating block 10 and the B rotating block 12. The threaded sleeve 13 is placed on the threaded hole on the outer shell 1, and the A fixing bolt 14 is screwed into the threaded sleeve 13. When the A fixing bolt 14 is screwed, the threaded sleeve 15 is screwed into the threaded groove opened on the surface of the threaded sleeve 13, which can achieve a double fixing effect and prevent the oil tank filter screen from vibrating during the excavator's operation, causing the protective cover 4 to fall off. The anti-theft mechanism can prevent theft and also prevent theft.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A theft-proof and pumping-proof filter screen for an excavator fuel tank, comprising a housing (1), characterized in that: The inside of the shell (1) is inserted into the filter core (2), the inner side wall of the filter core (2) is provided with a sliding groove, the inside of the sliding groove is slidably connected with a cleaning mechanism, the inside of the filter core (2) is inserted into a sealing plug (3), the upper surface of the sealing plug (3) is fixedly connected with a protective cover (4), and the outer surface of the protective cover (4) is fixedly connected with an anti-theft mechanism. The cleaning mechanism comprises a sliding block (5), the outer surface of the sliding block (5) is slidably connected with the inside of the sliding groove, one side of the sliding block (5) is fixedly connected with an A filter plate (6), the bottom of the A filter plate (6) is fixedly connected with a supporting seat (7), the upper surface of the sliding block (5) is fixedly connected with a stretching rod (8), the inner side wall of the stretching rod (8) is provided with a hole groove, and the inside of the hole groove is rotatably connected with a pull ring (9).

2. The theft and siphoning resistant fuel tank strainer of claim 1, wherein: The anti-theft mechanism comprises an A rotating block (10), one end of the A rotating block (10) is fixedly connected with the outer surface of the protective cover (4), one side of the A rotating block (10) is rotatably connected with a B rotating block (12) through a rotating rod (11), one end of the B rotating block (12) is fixedly connected with a threaded sleeve (13), the inside of the threaded sleeve (13) is threadedly connected with an A fixed bolt (14), the surface of the threaded sleeve (13) is provided with a threaded groove, the inside of the threaded groove is fixedly connected with a threaded sleeve (15), and the upper surface of the threaded sleeve (15) is fixedly connected with the bottom of the threaded head of the A fixed bolt (14).

3. The theft and siphoning resistant fuel tank strainer of claim 1, wherein: The bottom of the shell (1) is provided with a groove, the inside of the groove is fixedly connected with a B filter plate (16), and the surface of the B filter plate (16) is provided with fine small holes.

4. The theft and siphoning resistant fuel tank strainer of claim 1, wherein: The upper surface of the shell (1) is provided with a threaded hole, and the inside of the threaded hole is threadedly connected with a B fixed bolt (17).

5. The theft and siphoning resistant fuel tank strainer of claim 1, wherein: The outer surface of the sealing plug (3) is fixedly connected with a rubber sleeve (18), and the outer surface of the rubber sleeve (18) is fixedly connected with anti-skid convex points.

6. The theft and siphoning resistant fuel tank strainer of claim 1, wherein: The outer surfaces of the shell (1) and the filter core (2) are provided with filter holes, and the inside of the filter holes is fixedly connected with filter screens.

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