A fuel filtering device and method for a diesel engine

Abstract

The present invention relates to a fuel filtering device and method for a diesel engine. The filtering device includes a first disk and a second disk arranged successively from top to bottom. The first disk is provided with a first hole and a first groove for fuel to pass through. Along the circumferential direction of the second disk, two or more second holes and a second groove are equidistantly arranged. Filter paper for filtering fuel is provided at the second holes. Two mutually contacting first wheels and second wheels are provided at the first groove. The first wheel is in contact with the surface of the second disk. A roller brush concentric with the second wheel for cleaning the filter paper is provided on the second wheel. The present invention is provided with multiple spare filter papers, which can quickly switch and clean the filter papers with reduced filtering efficiency when the filter papers need to be replaced, making the use of the fuel filtering device more convenient and fast. At the same time, the replacement efficiency of the filter paper is improved, enabling the diesel engine to quickly resume operation, thereby ensuring the normal progress of the task.

Description

Technical Field

[0001] The present invention belongs to the technical field of fuel filtration, and particularly relates to a fuel filtration device and method for a diesel engine. Background Art

[0002] Diesel engines use diesel fuel. The fuel filtration of a diesel engine is to remove impurities and moisture in the diesel and improve the cleanliness of the diesel. All kinds of diesel contain a certain amount of impurities, such as dust, residual carbon, and colloid. In addition, during use, due to improper transportation, storage, or preservation, dust and moisture may also be mixed in. In the fuel supply system, even if fine impurities enter the precision parts in the fuel injection pump and injector, it will accelerate their wear or cause various failures. Therefore, diesel must be strictly filtered.

[0003] Marine diesel engines use heavy oil as fuel. Since heavy oil itself contains more impurities, the commonly used fuel filtration equipment needs to be frequently replaced and cleaned, which directly increases the workload of the staff. Moreover, during the cleaning process of the fuel filtration equipment, the diesel engine cannot work normally, which will also cause the diesel engine to be unable to start for a period of time, thus affecting the normal progress of the task. Summary of the Invention

[0004] The purpose of the present invention is to provide a fuel filtration device and method for a diesel engine to solve the problems raised in the above background art.

[0005] The present invention achieves the above purpose through the following technical solutions:

[0006] A fuel filtration device for a diesel engine includes a first disk and a second disk arranged in sequence from top to bottom. The first disk is provided with a first hole and a first groove for fuel to pass through. The second disk is circumferentially and equidistantly provided with two or more second holes and a second groove. Filter paper for filtering fuel is provided at the second holes. Two mutually contacting first wheels and second wheels are provided at the first groove. The first wheel contacts the surface of the second disk, and a roller brush concentric with the second wheel for cleaning the filter paper is provided on the second wheel.

[0007] Preferably, the diameter of the first wheel is smaller than that of the second wheel.

[0008] Preferably, a third disk is provided on the side of the second disk away from the first disk. The third disk is provided with a third hole and a third groove concentric with the first hole. A rotating block is provided at the third groove, and a first magnetic block is provided on the rotating block. The second disk is provided with two or more rectangular grooves, and second magnetic blocks with the same magnetism as the first magnetic block are provided in the rectangular grooves.

[0009] Preferably, a first frame is provided on the rotating block, a second frame is provided on the first frame, a pressing plate is provided on the side of the second frame away from the first frame, two or more spray holes are provided on the pressing plate, and a return spring for driving the pressing plate to reset is provided on the rotating block.

[0010] Preferably, the rotating block touches the filter paper before the drum brush.

[0011] A method for filtering the fuel of a diesel engine by using the fuel filtering device of any one of the above-mentioned diesel engines, characterized by comprising the following steps:

[0012] S1: Rotate the first disk and the second disk so that the centers of the first hole and one of the second holes are on the same axis;

[0013] S: Remove the moisture in the fuel of the diesel engine, and then introduce the fuel with the moisture removed to the first hole. The fuel enters the diesel engine after passing through the filter paper;

[0014] S: Rotate the second disk after the filtering efficiency of the filter paper decreases to switch to a new filter paper. When the second disk rotates, it drives the first wheel to rotate, so that the second wheel and the drum brush rotate synchronously to clean the used filter paper. Replace the new filter paper after the filter paper has been used for the specified number of times.

[0015] The beneficial effects of the present invention are as follows:

[0016] The present invention is provided with a plurality of spare filter papers. When the filter paper needs to be replaced, the filter paper with decreased filtering efficiency can be quickly switched and cleaned, making the use of the fuel filtering device more convenient and fast. At the same time, the replacement efficiency of the filter paper is improved, enabling the diesel engine to quickly resume use, thereby ensuring the normal progress of the task. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall structural schematic diagram of the present invention;

[0018] Figure 2 is the positional relationship schematic diagram of the drum brush and the first disk in the present invention;

[0019] Figure 3 is the positional relationship schematic diagram of the rotating block and the third disk in the present invention;

[0020] Figure 4 is the positional relationship schematic diagram of the pressing plate and the rotating block in the present invention;

[0021] Figure 5 is the positional relationship schematic diagram of the first frame and the second frame in the present invention.

[0022] In the figure: 1. First disk; 2. Second disk; 3. First hole; 4. First groove; 5. Second hole; 6. Second groove; 7. Filter paper; 8. First wheel; 9. Second wheel; 10. Roller brush; 11. Third disk; 12. Third hole; 13. Third groove; 14. Rotating block; 15. First magnetic block; 16. Second magnetic block; 17. First frame; 18. Second frame; 19. Pressing plate; 20. Spray hole. Detailed implementation manners

[0023] The following further describes the present application in detail. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present application and cannot be understood as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0024] Embodiment 1

[0025] As Figures 1-5 shown, a fuel filtering device for a diesel engine includes a first disk 1 and a second disk 2 arranged in sequence from top to bottom. The first disk 1 is provided with a first hole 3 and a first groove 4 for fuel to pass through. The second disk 2 is provided with more than two second holes 5 and a second groove 6 at equal intervals along its circumference. A filter paper 7 for filtering fuel is provided at the second hole 5. Two mutually contacting first wheel 8 and second wheel 9 are provided at the first groove 4. The first wheel 8 is in contact with the surface of the second disk 2, and a roller brush 10 concentric with the second wheel 9 for cleaning the filter paper 7 is provided on the second wheel 9.

[0026] As a further solution of the present invention, the diameter of the first wheel 8 is smaller than that of the second wheel 9.

[0027] In the above embodiment, when the first hole 3 of the first disk 1 and the second disk 2 and the second hole 5 are on the same axis, fuel can enter the diesel engine through the first disk 1 and the second disk 2. When the fuel passes through the filter paper 7 on the second disk 2, the impurities inside are filtered out, and the clean fuel enters the diesel engine. When one of the filter papers 7 has a reduced filtering capacity after a long time of filtering, the second disk 2 is rotated at this time, so that the unused filter paper 7 on the second disk 2 rotates to the fuel passing position, and the filter paper 7 that has collected a large amount of impurities is rotated to the first groove 4 of the first disk 1. The second disk 2 drives the first wheel 8 to rotate during the rotation process, the first wheel 8 drives the second wheel 9 and the roller brush 10 on the second wheel 9 to rotate, and the roller brush 10 contacts the surface of the filter paper 7 and sweeps the impurities collected on the surface of the filter paper 7 into the second groove 6 next to the second hole 5 for collection. The filter paper 7 after being swept by the roller brush 10 can be used again, saving the time for replacing the filter paper 7.

[0028] Among them, the diameter of the first wheel 8 is smaller than that of the second wheel 9, and the rotation speed of the roller brush 10 is controlled to prevent magazines from being re-introduced to the side of the filter paper 7 that has already been cleaned due to rapid rotation, but only to sweep the magazines into the second groove 6 for temporary storage.

[0029] As a further solution of the present invention, a third disk 11 is provided on the side of the second disk 2 away from the first disk 1. A third hole 12 and a third groove 13 concentric with the first hole 3 are provided on the third disk 11. A rotating block 14 is provided at the third groove 13. A first magnetic block 15 is provided on the rotating block 14. Two or more rectangular grooves are provided on the second disk 2, and second magnetic blocks 16 with the same magnetism as the first magnetic block 15 are provided in the rectangular grooves.

[0030] In the above embodiment, when the second disk 2 rotates, it drives the second magnetic block 16 to rotate. Since the second magnetic block 16 has the same magnetism as the first magnetic block 15 and they mutually have a repulsive force, when the second magnetic block 16 approaches the first magnetic block 15, the first magnetic block 15 is suddenly repelled, causing the first magnetic block 15 to drive the rotating block 14 to rotate rapidly. When the rotated rotating block 14 contacts the filter paper 7, it impacts the filter paper 7, causing the impurities embedded in the filter paper 7 to be knocked out, which helps the roller brush 10 to clean the filter paper 7. Multiple second magnetic blocks 16 can drive the rotating block 14 to produce repeated impacts, so that the filter paper 7 can be effectively cleaned.

[0031] As a further solution of the present invention, a first frame 17 is provided on the rotating block 14. A second frame 18 is provided on the first frame 17. A pressing plate 19 is provided on the side of the second frame 18 away from the first frame 17. Two or more spray holes 20 are provided on the pressing plate 19. A return spring for driving the pressing plate 19 to reset is provided on the rotating block 14.

[0032] As a further solution of the present invention, the rotating block 14 contacts the filter paper 7 before the roller brush 10.

[0033] In the above embodiment, when the rotating block 14 drives the pressing plate 19 to contact the filter paper 7, the second frame 18 and the first frame 17 overlap, so that the gas between the first frame 17 and the second frame 18 is ejected from the spray holes 20. The ejected gas penetrates the filter paper 7, and the impurities embedded in the filter paper 7 are driven by the gas. The setting of the return spring can separate the second frame 18 and the first frame 17 again, and the return spring can make the limiting block stop slowly, preventing the rotating block 14 from contacting the filter paper 7 too fast and causing the filter paper 7 to be broken.

[0034] Among them, during the working process, the rotating block 14 first knocks out the impurities in the filter paper 7, and then the roller brush 10 sweeps the impurities into the second groove 6 for temporary storage, improving the cleaning efficiency of the filter paper 7.

[0035] A method for filtering the fuel of a diesel engine by using the fuel filtering device of any one of the above-mentioned diesel engines, comprising the following steps:

[0036] S1: Rotate the first disk 1 and the second disk 2 so that the centers of the first hole 3 and one of the second holes 5 are on the same axis; when the first holes 3, the second holes 5 and the third holes 12 on the first disk 1, the second disk 2 and the third disk 11 are on the same axis, the fuel can pass through the first disk 1, the second disk 2 and the third disk 11 and then enter the diesel engine. When the fuel passes through the filter paper 7 on the second disk 2, the impurities inside it are filtered out, and the clean fuel enters the diesel engine.

[0037] S2: Remove the water in the fuel of the diesel engine, and then introduce the fuel with water removed into the first hole 3. The fuel passes through the filter paper 7 and then enters the diesel engine;

[0038] S3: After the filtering efficiency of the filter paper drops, rotate the second disk 2 to switch to a new filter paper 7. When the second disk 2 rotates, it drives the first wheel 8 to rotate, so that the second wheel 9 and the roller brush 10 rotate synchronously to clean the used filter paper 7. After the filter paper 7 has been used for the specified number of times, a new filter paper 7 is replaced; when the filtering capacity of one of the filter papers 7 drops after a long time of filtering, at this time, rotate the second disk 2 so that the unused filter paper 7 on the second disk 2 rotates to the fuel passing position, and the filter paper 7 that has collected a large amount of impurities is rotated to the first groove 4 of the first disk 1. During the rotation of the second disk 2, it drives the first wheel 8 to rotate, the first wheel 8 drives the second wheel 9 and the roller brush 10 on the second wheel 9 to rotate, and the roller brush 10 contacts the surface of the filter paper 7 and sweeps the impurities collected on the surface of the filter paper 7 into the second groove 6 beside the second hole 5 for collection. The filter paper 7 after being cleaned by the roller brush 10 can be used again, saving the time for replacing the filter paper 7.

[0039] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A fuel filtering device for a diesel engine, characterized in that: it includes a first disk (1) and a second disk (2) arranged successively from top to bottom. The first disk (1) is provided with a first hole (3) and a first groove (4) for fuel to pass through. Along the circumferential direction of the second disk (2), there are provided more than two second holes (5) and second grooves (6) at equal distances. At the second holes (5), there is a filter paper (7) for filtering fuel. At the first groove (4), there are two contacting first wheels (8) and second wheels (9). The first wheel (8) is in contact with the surface of the second disk (2). On the second wheel (9), there is a roller brush (10) concentric with it for cleaning the filter paper (7); the diameter of the first wheel (8) is smaller than that of the second wheel (9); on the side of the second disk (2) away from the first disk (1), there is a third disk (11). The third disk (11) is provided with a third hole (12) and a third groove (13) concentric with the first hole (3). At the third groove (13), there is a rotating block (14). On the rotating block (14), there is a first magnetic block (15). On the second disk (2), there are more than two rectangular grooves, and in the rectangular grooves, there are second magnetic blocks (16) with the same magnetism as the first magnetic block (15); on the rotating block (14), there is a first frame (17). On the first frame (17), there is a second frame (18). On the side of the second frame (18) away from the first frame (17), there is a pressing plate (19). On the pressing plate (19), there are more than two spray holes (20). On the rotating block (14), there is a return spring for driving the pressing plate (19) to reset.

2. A fuel filtering device for a diesel engine according to claim 1, characterized in that: the rotating block (14) contacts the filter paper (7) prior to the roller brush (10).

3. A method for filtering the fuel of a diesel engine by using the fuel filtering device for a diesel engine according to any one of claims 1-2, characterized in that, it includes the following steps: S1: Rotate the first disk (1) and the second disk (2) so that the centers of the first hole (3) and one of the second holes (5) are on the same axis; S2: Remove the moisture in the fuel of the diesel engine, and then introduce the fuel with moisture removed to the first hole (3). After the fuel passes through the filter paper (7), it enters the diesel engine; S3: After the filtering efficiency of the filter paper drops, rotate the second disk (2) to switch to a new filter paper (7). When the second disk (2) rotates, it drives the first wheel (8) to rotate, so that the second wheel (9) and the roller brush (10) rotate synchronously to clean the used filter paper (7). After the filter paper (7) is used up to the specified number of times, replace it with a new filter paper (7).

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