Fuel valve filtering structure

Abstract

The utility model provides a fuel oil valve filtering structure which comprises a valve body with an oil inlet channel, an oil filtering pressing block, a fuel oil filter element and a spring are arranged in the oil inlet channel, the oil filtering pressing block is fixed in the oil inlet channel and is of an annular structure, and the outer circumferential wall of the oil filtering pressing block is attached to the inner circumferential wall of the oil inlet channel in a sealed mode. A first sealing ring is arranged on the rear end face of the oil filter pressing block, the fuel oil filter element is movably arranged in the oil inlet channel in the axial direction, an oil passing gap is formed between the fuel oil filter element and the inner circumferential wall of the oil inlet channel, one end of the spring is connected with the valve body, the other end of the spring is connected with the fuel oil filter element, and the spring is used for moving the fuel oil filter element towards the oil filter pressing block. When the fuel oil filter element extrudes the first sealing ring of the oil filter pressing block, the fuel oil filter element filters fuel oil in the oil inlet channel, and when the fuel oil filter element is far away from the oil filter pressing block, the fuel oil in the oil inlet channel enters the inner cavity of the valve body through the oil passing gap. The filtering structure can prevent the filter element from blocking an oil way, and normal operation and use of an engine are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel valves, in particular to a fuel valve filtering structure. Background Art

[0002] The fuel filter is a crucial component in internal combustion engine-powered equipment, such as vehicles, construction machinery, ships, and aircraft. It filters impurities from the fuel, preventing them from entering the engine, ensuring proper engine startup and operation, and effectively extending the engine's service life. The filter element in the fuel filter typically requires regular replacement. Due to the varying quality of fuels on the market and excessive impurity levels, many filter elements may become clogged before the replacement mileage is reached. A clogged filter can result in poor fuel supply to the engine, hindering power output, increasing the load on the high-pressure fuel pump, and preventing timely fuel delivery to the engine, leading to unexpected engine shutdowns. Utility Model Content

[0003] The technical problem to be solved by the present invention is that the blockage of the filter element in the filter structure will lead to poor fuel supply to the engine, resulting in unexpected engine shutdown. In order to overcome the above defects of the existing technology, the present invention provides a fuel valve filter structure.

[0004] The utility model provides a fuel valve filter structure, comprising a valve body having an oil inlet passage, wherein the front end of the oil inlet passage is provided with an oil inlet port, the rear end of the oil inlet passage is communicated with the inner cavity of the valve body, an oil filter block, a fuel filter element and a spring are provided in the oil inlet passage, the oil filter block is fixed in the oil inlet passage and arranged near the oil inlet port, the oil filter block has an annular structure, the outer circumferential wall of the oil filter block is in sealing contact with the inner circumferential wall of the oil inlet passage, a first sealing ring is provided on the rear end surface of the oil filter block, the fuel filter element is axially movable in the oil inlet passage, an oil flow gap is provided between the fuel filter element and the inner circumferential wall of the oil inlet passage, one end of the spring is connected to the valve body, and the other end of the spring is connected to the fuel filter element, the spring is used to move the fuel filter element toward the oil filter block, when the fuel filter element presses the first sealing ring of the oil filter block, the fuel filter element filters the fuel in the oil inlet passage, and when the fuel filter element moves away from the oil filter block, the fuel in the oil inlet passage enters the inner cavity of the valve body through the oil flow gap.

[0005] Compared with the prior art, the fuel valve filter structure of the present application has the following advantages: by arranging a first sealing ring on the rear end surface of the oil filter pressure block, the fuel filter element is driven by a spring to move toward the oil filter pressure block, so that the fuel filter element squeezes the first sealing ring. At this time, the fuel filter element filters the fuel in the oil inlet channel, that is, the fuel filter element is not blocked; when the resistance of the fuel filter element is too large or blocked, a pressure difference is formed before and after the fuel filter element, causing the fuel filter element to move away from the oil filter pressure block. At this time, the fuel enters the valve body cavity through the oil gap, thereby preventing the filter element from blocking the oil path and ensuring the normal operation of the engine.

[0006] In a possible implementation manner, a first annular groove is provided on the rear end surface of the oil filter block, and the first sealing ring is disposed in the first annular groove.

[0007] Compared with the prior art, the above technical solution can stabilize the setting of the first sealing ring and improve the sealing performance.

[0008] In a possible implementation, a second annular groove is provided on the outer peripheral wall of the oil filter block, a second sealing ring is provided in the second annular groove, and the second sealing ring is in sealing cooperation with the inner peripheral wall of the oil inlet channel.

[0009] Compared with the prior art, the above technical solution can improve the sealing reliability between the outer peripheral wall of the oil filter block and the inner peripheral wall of the oil inlet channel.

[0010] In a possible implementation manner, the fuel filter element includes a support ring and a filter screen. The front end of the support ring is used to abut against the first sealing ring, and the rear end of the support ring is detachably connected to the filter screen.

[0011] Compared with the existing technology, the above technical solution can make the filter support stable, and at the same time facilitate the disassembly and installation of the filter and the replacement.

[0012] In a possible implementation manner, the filter screen has a conical structure, and the large end of the filter screen is plugged into the support ring.

[0013] Compared with the existing technology, the above technical solution can increase the contact area with the fuel and improve the filtering effect.

[0014] In a possible implementation manner, the outer diameter of the support ring is smaller than the inner diameter of the oil inlet channel, and the outer diameter of the support ring is larger than the outer diameter of the first sealing ring.

[0015] Compared with the existing technology, the above technical solution can facilitate the smooth flow of oil through the oil gap and improve the service stability of the first sealing ring.

[0016] In a possible implementation manner, a retaining spring is provided at the oil inlet of the oil inlet channel, and the retaining spring abuts against the oil filter block.

[0017] Compared with the prior art, the above technical solution can improve the setting stability of the oil filter block and prevent the oil filter block from being pushed out of the oil inlet channel by the fuel filter element.

[0018] In a possible implementation manner, an annular step is provided at the rear end of the oil inlet channel, and the annular step abuts against a spring.

[0019] Compared with the prior art, the above technical solution can ensure reliable spring arrangement and improve filtering reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 for Figure 1 A magnified view of point A;

[0022] Description of reference numerals:

[0023] 1. Valve body; 11. Oil inlet channel; 12. Oil inlet port; 13. Annular step; 2. Oil filter block; 21. First annular groove; 22. Second annular groove; 3. Fuel filter element; 31. Support ring; 32. Filter screen; 4. Spring; 5. First sealing ring; 6. Oil clearance; 7. Second sealing ring; 8. Circlip. DETAILED DESCRIPTION

[0024] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0025] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0026] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] See also Figure 1 and Figure 2 , the embodiment of the present application discloses a fuel valve filtering structure, comprising a valve body 1 with an oil inlet channel 11, the front end of the oil inlet channel 11 is provided with an oil inlet port 12, the rear end of the oil inlet channel 11 is communicated with the inner cavity of the valve body 1, an oil filter block 2, a fuel filter element 3 and a spring 4 are provided in the oil inlet channel 11, the oil filter block 2 is fixed in the oil inlet channel 11 and is arranged near the oil inlet port 12, the oil filter block 2 is annular in structure and the outer peripheral wall of the oil filter block 2 is sealed with the inner peripheral wall of the oil inlet channel 11, a first sealing ring 5 is provided on the rear end surface of the oil filter block 2, the fuel filter The core 3 is arranged in the oil inlet channel 11 for axial movement. An oil gap 6 is provided between the fuel filter element 3 and the inner peripheral wall of the oil inlet channel 11. One end of the spring 4 is connected to the valve body 1, and the other end of the spring 4 is connected to the fuel filter element 3. The spring 4 is used to move the fuel filter element 3 toward the oil filter pressure block 2. When the fuel filter element 3 squeezes the first sealing ring 5 of the oil filter pressure block 2, the fuel filter element 3 filters the fuel in the oil inlet channel 11. When the fuel filter element 3 moves away from the oil filter pressure block 2, the fuel in the oil inlet channel 11 enters the inner cavity of the valve body 1 through the oil gap 6.

[0029] As can be seen from the above, by providing a first sealing ring 5 on the rear end face of the oil filter block 2, the fuel filter element 3 is driven by the spring 4 to move toward the oil filter block 2, so that the fuel filter element 3 squeezes the first sealing ring 5. At this time, the fuel filter element 3 filters the fuel in the oil inlet channel 11, that is, the fuel filter element 3 is in an unblocked state; when the resistance of the fuel filter element 3 is too large or it is blocked, a pressure difference is formed before and after the fuel filter element 3, causing the fuel filter element 3 to move away from the oil filter block 2. At this time, the fuel enters the inner cavity of the valve body 1 through the oil gap 6, thereby preventing the filter element from blocking the oil circuit and ensuring the normal operation of the engine.

[0030] In this embodiment, a first annular groove 21 is provided on the rear end surface of the oil filter block 2 , and the first sealing ring 5 is disposed in the first annular groove 21 , thereby stably disposing the first sealing ring 5 and improving the sealing performance.

[0031] In this embodiment, a second annular groove 22 is provided on the outer circumferential wall of the oil filter block 2, and a second sealing ring 7 is provided in the second annular groove 22. The second sealing ring 7 is sealed with the inner circumferential wall of the oil inlet channel 11, thereby improving the sealing reliability between the outer circumferential wall of the oil filter block 2 and the inner circumferential wall of the oil inlet channel 11.

[0032] In this embodiment, the fuel filter element 3 includes a support ring 31 and a filter screen 32. The front end of the support ring 31 is used to abut against the first sealing ring 5, and the rear end of the support ring 31 is detachably connected to the filter screen 32, thereby enabling the filter screen 32 to be supported stably and conveniently disassembling and assembling the filter screen 32 for replacement.

[0033] In this embodiment, the filter 32 has a conical structure, and the large end of the filter 32 is plugged into the support ring 31, thereby increasing the contact area with the fuel and improving the filtering effect.

[0034] In this embodiment, the outer diameter of the support ring 31 is smaller than the inner diameter of the oil inlet channel 11, and the outer diameter of the support ring 31 is larger than the outer diameter of the first sealing ring 5, thereby facilitating smooth oil flow through the oil gap 6 and improving the stability of the first sealing ring 5.

[0035] In this embodiment, a retaining spring 8 is provided at the oil inlet 12 of the oil inlet channel 11. The retaining spring 8 abuts against the oil filter block 2, thereby improving the setting stability of the oil filter block 2 and preventing the oil filter block 2 from being pushed out of the oil inlet channel 11 by the fuel filter element 3.

[0036] In this embodiment, an annular step 13 is provided at the rear end of the oil inlet channel 11 , and the annular step 13 abuts against the spring 4 , thereby enabling the spring 4 to be reliably arranged and improving filtering reliability.

[0037] In this embodiment, the operating state of the fuel valve filter structure is as follows: the oil filter block 2 is fixed in the oil inlet channel 11, the front end face of the oil filter block 2 abuts against the retaining spring 8, and the fuel filter element 3 is driven by the spring 4. The support ring 31 of the fuel filter element 3 is squeezed on the first sealing ring 5 on the rear end face of the oil filter block 2. At this time, the fuel passes through the oil inlet 12, the inner hole of the oil filter block 2, the inner hole of the support ring 31, the filter screen 32, and then enters the inner cavity of the valve body 1.

[0038] In this embodiment, the fuel valve filter structure operates in a second state: the oil filter block 2 is fixed in the oil inlet passage 11, the fuel filter element 3 has excessive resistance or is clogged, and a pressure differential is formed in front and behind the fuel filter element 3, causing the fuel filter element 3 to move away from the oil filter block 2. At this time, the fuel passes through the oil inlet 12, the inner hole of the oil filter block 2, the oil gap 6, and then enters the inner cavity of the valve body 1.

[0039] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0040] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0041] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A fuel valve filter structure, comprising a valve body (1) having an oil inlet passage (11), wherein the front end of the oil inlet passage (11) is provided with an oil inlet port (12), and the rear end of the oil inlet passage (11) is communicated with the inner cavity of the valve body (1), characterized in that: An oil filter block (2), a fuel filter element (3) and a spring (4) are provided in the oil inlet passage (11). The oil filter block (2) is fixed in the oil inlet passage (11) and is arranged close to the oil inlet port (12). The oil filter block (2) is annular in structure and the outer peripheral wall of the oil filter block (2) is sealed with the inner peripheral wall of the oil inlet passage (11). A first sealing ring (5) is provided on the rear end face of the oil filter block (2). The fuel filter element (3) is arranged in the oil inlet passage (11) in an axially movable manner. A spring (4) is provided between the fuel filter element (3) and the inner peripheral wall of the oil inlet passage (11). An oil gap (6) is provided. One end of the spring (4) is connected to the valve body (1), and the other end of the spring (4) is connected to the fuel filter element (3). The spring (4) is used to move the fuel filter element (3) toward the oil filter block (2). When the fuel filter element (3) squeezes the first sealing ring (5) of the oil filter block (2), the fuel filter element (3) filters the fuel in the oil inlet channel (11). When the fuel filter element (3) moves away from the oil filter block (2), the fuel in the oil inlet channel (11) enters the inner cavity of the valve body (1) through the oil gap (6).

2. The fuel valve filter structure according to claim 1, characterized in that: A first annular groove (21) is provided on the rear end surface of the oil filter pressure block (2), and the first sealing ring (5) is arranged in the first annular groove (21).

3. The fuel valve filter structure according to claim 1, characterized in that: The outer peripheral wall of the oil filter block (2) is provided with a second annular groove (22), a second sealing ring (7) is provided in the second annular groove (22), and the second sealing ring (7) is in sealing cooperation with the inner peripheral wall of the oil inlet channel (11).

4. The fuel valve filter structure according to claim 1, characterized in that: The fuel filter element (3) comprises a support ring (31) and a filter screen (32); the front end of the support ring (31) is used to abut against the first sealing ring (5); and the rear end of the support ring (31) is detachably connected to the filter screen (32).

5. The fuel valve filter structure according to claim 4, characterized in that: The filter screen (32) has a conical structure, and the large end of the filter screen (32) is plugged into the support ring (31).

6. The fuel valve filter structure according to claim 4, characterized in that: The outer diameter of the support ring (31) is smaller than the inner diameter of the oil inlet channel (11), and the outer diameter of the support ring (31) is larger than the outer diameter of the first sealing ring (5).

7. The fuel valve filter structure according to claim 1, characterized in that: A retaining spring (8) is provided at the oil inlet (12) of the oil inlet channel (11), and the retaining spring (8) abuts against the oil filter block (2).

8. The fuel valve filter structure according to claim 1, characterized in that: An annular step (13) is provided at the rear end of the oil inlet channel (11), and the annular step (13) abuts against the spring (4).

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