High-flow fuel filter

Abstract

The utility model discloses a large-flow fuel filter which comprises a shell, an oil inlet pipeline is arranged at the upper end of the shell, an oil outlet pipeline is arranged at the lower end of the shell, an oil cavity is formed in the shell, and a sealing cover plate, a filter element upper cover, a filter element structure, a filter element lower cover and a high-elasticity spring are sequentially arranged in the shell from top to bottom. A main channel is formed in the position, corresponding to the oil inlet pipeline, of the sealing cover plate, a non-return structure is arranged in the main channel, a flow dividing channel is formed in the lower end of the main channel in a communicating mode, a plurality of flow dividing openings are formed in the lower end of the flow dividing channel in a communicating mode, and through holes are formed in the positions, corresponding to the flow dividing openings, of the filter element upper cover; a plurality of embedded grooves are formed in the lower end of the filter element upper cover, filter element structures are embedded in the embedded grooves, and each filter element structure comprises a central pipe and filter paper arranged on the outer side of the central pipe in a sleeving mode; the filter is large in filtering flow and high in filtering efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, and more specifically to a large-flow fuel filter. Background Art

[0002] The fuel filter is an important component of internal combustion engine power equipment used in vehicles, construction machinery, ships, etc. It is used to filter impurities in the fuel to prevent impurities in the fuel from entering the internal combustion engine, effectively extending the service life of the internal combustion engine. The general filter only filters through a single central tube and filter paper, with a small filtration flow rate, so the filtration efficiency is low.

[0003] In the prior art, a Chinese utility model large-flow oil filter with publication number CN220539715U can ensure that more oil can enter the inner cavity of the filter body at the same time by opening two oil inlets, thereby increasing the feeding speed of the oil; however, it only increases the speed at which the raw materials enter the filter, but cannot increase the filtration speed, so the filtration efficiency is still not high. Therefore, the present application proposes a large-flow fuel filter. Utility Model Content

[0004] The utility model aims to provide a large-flow fuel filter with large filtering flow and high filtering efficiency.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A large flow fuel filter comprises a shell, an oil inlet pipe is arranged at the upper end of the shell, an oil outlet pipe is arranged at the lower end of the shell, an oil cavity is arranged in the shell, a sealing cover plate, a filter element upper cover, a filter element structure, a filter element lower cover and a high elastic spring are arranged in the shell from top to bottom, a main channel is arranged at a position corresponding to the oil inlet pipe on the sealing cover plate, a check structure is arranged in the main channel, a diversion channel is arranged at the lower end of the main channel, a plurality of diversion ports are arranged at the lower end of the diversion channel, and the filter element upper cover corresponds to the diversion ports The filter element upper cover has a plurality of embedded grooves at its lower end, and the filter element structure is embedded in the embedded grooves. The filter element structure includes a center tube and filter paper sleeved on the outside of the center tube. The upper end of the center tube is connected to the through hole, and the center tube is provided with a plurality of oil discharge holes. A base is fixedly provided at the lower end of the center tube, and a rotating shaft is rotatably connected to the center of the upper end of the base. Scrapers are fixedly provided on both sides of the rotating shaft through connecting columns, and the scrapers are abutted against the inner side of the center tube. A plurality of spiral sheets are fixedly provided on the rotating shaft.

[0007] By adopting the above technical solution, the utility model has the following advantages:

[0008] The arrangement of several filter element structures of the utility model can make more fuel enter each filter element structure at the same time for filtering, thereby increasing the filtering flow rate and improving the filtering efficiency; the arrangement of the rotating shaft, scraper and spiral piece of the utility model can push the spiral piece to rotate during the downstream process of the fuel, thereby driving the scraper to scrape the inner wall of the central tube, preventing impurities from being retained on the inner wall of the central tube, resulting in the obstruction of the fuel passing through, and effectively improving the efficiency of fuel filtering.

[0009] Furthermore, the non-return structure includes a bottom ring, which is fixedly connected to the inner side of the main channel through a plurality of cross columns, a non-return spring is fixedly provided at the upper end of the bottom ring, a baffle is fixedly provided at the upper end of the non-return spring, a fixed plate is fixedly provided at the lower end of the oil inlet pipeline, a flow opening is provided in the center of the fixed plate, and the upper end surface of the baffle plate is abutted against the lower end surface of the fixed plate.

[0010] By adopting the above technical solution, the utility model has the following advantages:

[0011] The arrangement of the check spring and the baffle plate of the utility model enables the baffle plate to be pushed toward the check spring and squeezed through when the fuel flows in from the oil inlet pipe. When the fuel flows back, the elastic force of the check spring squeezes the baffle plate and the fixed plate to seal, so the fuel cannot flow back, thereby achieving the check effect.

[0012] Furthermore, an annular protrusion is fixedly provided on the upper end of the filter element upper cover, and an annular groove is provided at the lower end of the sealing cover plate at a position corresponding to the annular protrusion, and the annular protrusion is clamped in the corresponding annular groove.

[0013] By adopting the above technical solution, the utility model has the following advantages:

[0014] The annular protrusion and the annular groove of the utility model enable the sealing cover plate to quickly correspond to the filter element upper cover, thereby aligning the diverter port with the through hole.

[0015] Furthermore, a clamping block is fixedly provided at the lower end of the base, and a clamping groove is provided at the upper end of the filter element lower cover at a position corresponding to the clamping block, and the clamping block is clamped in the corresponding clamping groove.

[0016] By adopting the above technical solution, the utility model has the following advantages:

[0017] The arrangement of the clamping block and the clamping groove of the utility model enables the filter element structure to be quickly fixed on the upper end of the filter element lower cover to prevent it from moving left and right.

[0018] Furthermore, a spring groove is provided at the lower end of the filter element lower cover, a high-elastic spring is fixedly provided in the spring groove, and the lower end of the high-elastic spring is fixedly connected to the bottom end of the shell.

[0019] By adopting the above technical solution, the utility model has the following advantages:

[0020] The spring groove of the utility model plays a role in positioning the high-elastic spring, and the high-elastic spring plays a role in squeezing the lower cover of the filter element, so that the lower cover of the filter element, the filter element structure, the upper cover of the filter element and the sealing cover plate can be fixed in the housing.

[0021] Furthermore, the filter element lower cover is provided with a plurality of oil leakage holes, and the filter element lower cover side plate is provided with an inclined surface 1.

[0022] By adopting the above technical solution, the utility model has the following advantages:

[0023] The provision of the oil leakage hole of the utility model increases the route for the fuel to flow to the oil outlet pipeline, thereby improving the efficiency of oil discharge. The provision of the inclined surface further increases the efficiency of oil discharge.

[0024] Furthermore, a second inclined surface is provided on the side of the base.

[0025] By adopting the above technical solution, the utility model has the following advantages:

[0026] The arrangement of the second inclined surface of the utility model ensures that the fuel in the central tube will not be retained at the bottom end of the central tube, but will be discharged through the inclined filtration of the second inclined surface.

[0027] Furthermore, the shell includes a bottom shell and an upper cover, and the bottom shell and the upper cover are fixed by threaded connection.

[0028] By adopting the above technical solution, the utility model has the following advantages:

[0029] The arrangement of the bottom shell and the upper cover of the utility model enables the parts inside the filter to be repaired and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Figure 1 This is a schematic diagram of the cross-sectional structure at the center of the utility model;

[0032] Figure 2 This is a schematic diagram of the cross-sectional structure of the filter element structure and the center of the filter element lower cover when viewed from above;

[0033] Figure 3 It is a schematic diagram of the filter element upper cover, filter element structure and filter element lower cover structure of the utility model.

[0034] Figure numerals: 1. Sealing cover plate; 101. Main channel; 102. Diverter channel; 103. Diverter port; 104. Annular groove; 2. Filter element upper cover; 201. Through hole; 202. Annular protrusion; 203. Embedded groove; 3. Base; 301. Inclined surface 2; 302. Block; 4. Center pipe; 401. Oil drain hole; 5. Filter element lower cover; 501. Spring groove; 502. Block; 503. Inclined surface 1; 504. Oil leakage hole; 6. Bottom ring; 601. Horizontal column; 7. Fixed plate; 701. Flow port; 8. Connecting column; 801. Scraper; 9. Oil inlet pipeline; 10. Baffle; 11. Upper cover; 12. Filter paper; 13. Bottom shell; 14. High elastic spring; 15. Oil outlet pipeline; 16. Oil chamber; 17. Rotating shaft; 18. Spiral sheet; 19. Check spring. DETAILED DESCRIPTION

[0035] like Figures 1 to 3 As shown, in the specific embodiment, a large flow fuel filter includes a housing, an oil inlet pipe 9 is provided at the upper end of the housing, an oil outlet pipe 15 is provided at the lower end of the housing, an oil chamber 16 is provided in the housing, and a sealing cover plate 1, a filter element upper cover 2, a filter element structure, a filter element lower cover 5 and a high elastic spring 14 are provided in the housing from top to bottom. A main channel 101 is provided at a position corresponding to the oil inlet pipe 9 on the sealing cover plate 1, a check structure is provided in the main channel 101, a diversion channel 102 is provided at the lower end of the main channel 101, and a plurality of diversion ports 103 are provided at the lower end of the diversion channel 102, and the filter element upper cover 2 corresponds to the diversion port 103. Through holes 201 are provided at the positions of the openings 103, and a plurality of embedded grooves 203 are provided at the lower end of the filter element upper cover 2, and a filter element structure is embedded in the embedded grooves 203. The filter element structure includes a central tube 4 and a filter paper 12 sleeved on the outer side of the central tube 4. The upper end of the central tube 4 is communicated with the through hole 201, and a plurality of oil drain holes 401 are provided on the central tube 4. A base 3 is fixedly provided at the lower end of the central tube 4, and a rotating shaft 17 is rotatably connected to the center of the upper end of the base 3. Scrapers 801 are fixedly provided on both sides of the rotating shaft 17 through connecting columns 8, and the scrapers 801 are abutted against the inner side of the central tube 4, and a plurality of spiral sheets 18 are fixedly provided on the rotating shaft 17.

[0036] Through the above arrangement, the arrangement of several filter element structures of the utility model can make more fuel enter each filter element structure at the same time for filtration, increase the filtration flow rate, and improve the filtration efficiency; the arrangement of the rotating shaft 17, the scraper 801 and the spiral sheet 18 of the utility model can push the spiral sheet 18 to rotate during the downstream process of the fuel, thereby driving the scraper 801 to scrape the inner wall of the central tube 4, preventing impurities from being retained on the inner wall of the central tube 4, resulting in the obstruction of the fuel passing through, and effectively improving the efficiency of fuel filtration.

[0037] like Figure 1As shown, the non-return structure includes a bottom ring 6, which is fixedly connected to the inner side of the main channel 101 through a plurality of transverse columns 601, a non-return spring 19 is fixedly provided on the upper end of the bottom ring 6, a baffle 10 is fixedly provided on the upper end of the non-return spring 19, a fixed plate 7 is fixedly provided on the lower end of the oil inlet pipeline 9, a flow port 701 is provided in the center of the fixed plate 7, and the upper end surface of the baffle 10 abuts against the lower end surface of the fixed plate 7; an annular protrusion 202 is fixedly provided on the upper end of the filter element upper cover 2, an annular groove 104 is provided at the position corresponding to the annular protrusion 202 at the lower end of the sealing cover plate 1, and the annular protrusion 202 is clamped in the corresponding annular groove 104; a clamping block 302 is fixedly provided on the lower end of the base 3, a clamping groove 502 is provided at the position corresponding to the clamping block 302 at the upper end of the filter element lower cover 5, and the clamping block 302 is clamped in the corresponding clamping groove 502; a spring groove 501 is provided on the lower end of the filter element lower cover 5, a high-elastic spring 14 is fixedly provided in the spring groove 501, and the lower end of the high-elastic spring 14 is fixedly connected to the bottom end of the shell.

[0038] Through the above settings, the setting of the check spring 19 and the baffle 10 of the utility model enables the fuel to flow into the oil inlet pipe 9 by pushing the baffle 10 to squeeze through the check spring 19. When the fuel flows back, the elastic force of the check spring 19 squeezes the baffle 10 and the fixed plate 7 to seal, so that the fuel cannot flow back, thereby achieving the function of non-return. The setting of the annular protrusion 202 and the annular groove 104 of the utility model enables the sealing cover plate 1 to quickly correspond to the filter element upper cover 2, so that the diverter port 103 and the through hole 201 can be aligned. The setting of the block 302 and the slot 502 of the utility model enables the filter element structure to be quickly fixed to the upper end of the filter element lower cover 5 to prevent it from moving left and right. The setting of the spring slot 501 of the utility model plays the role of positioning the high-elastic spring 14, and the high-elastic spring 14 plays the role of squeezing the filter element lower cover 5, so that the filter element lower cover 5, the filter element structure, the filter element upper cover 2 and the sealing cover plate 1 can be fixed in the housing.

[0039] like Figures 1 to 3 As shown, the filter lower cover 5 is provided with a plurality of oil leakage holes 504, and the side plate of the filter lower cover 5 is provided with an inclined surface 1 503; the side of the base 3 is provided with an inclined surface 2 301; the housing includes a bottom shell 13 and an upper cover 11, and the bottom shell 13 and the upper cover 11 are fixed by threaded connection.

[0040] Through the above settings, the setting of the oil leakage hole 504 of the utility model increases the route for the fuel to flow to the oil outlet pipe 15, thereby improving the efficiency of oil drainage. The setting of the inclined surface 1 503 further increases the efficiency of oil drainage. The setting of the inclined surface 2 301 of the utility model makes it possible for the fuel in the center tube 4 to not be retained at the bottom end of the center tube 4, but to be filtered and discharged through the inclined surface 2 301. The setting of the bottom shell 13 and the upper cover 11 of the utility model makes it possible to repair and replace the internal parts of the filter.

[0041] Working principle: When in use, unfiltered fuel enters the flow port 701 through the oil inlet pipe 9, pushes the baffle 10 to squeeze the check spring 19, and then flows to the diversion channel 102 through the main channel 101, and enters the corresponding through hole 201 through each diversion port 103, thereby entering the corresponding center tube 4. The downwardly flowing fuel will impact the spiral piece 18, so that the spiral piece 18 drives the rotating shaft 17 to rotate, thereby driving the scraper 801 to scrape the inner wall of the center tube 4 to prevent impurities from accumulating and causing the fuel to be filtered unsmoothly. The fuel filtered through the oil discharge hole 401 of the center tube 4 is then filtered by the filter paper 12 and finally discharged through the oil outlet pipe 15. The setting of several filter element structures increases the filtering flow rate and has high filtering efficiency.

[0042] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A large flow fuel filter, comprising a housing, an oil inlet pipe (9) is provided at the upper end of the housing, an oil outlet pipe (15) is provided at the lower end of the housing, an oil chamber (16) is provided in the housing, and a sealing cover plate (1), a filter element upper cover (2), a filter element structure, a filter element lower cover (5) and a high elastic spring (14) are provided in the housing from top to bottom, characterized in that: A main channel (101) is provided on the sealing cover plate (1) at a position corresponding to the oil inlet pipeline (9), a check structure is provided in the main channel (101), a flow diversion channel (102) is provided at the lower end of the main channel (101), a plurality of flow diversion ports (103) are provided at the lower end of the flow diversion channel (102), through holes (201) are provided at positions corresponding to the flow diversion ports (103) on the filter element upper cover (2), a plurality of embedded grooves (203) are provided at the lower end of the filter element upper cover (2), a filter element structure is embedded in each of the embedded grooves (203), and the filter element structure The invention comprises a central tube (4) and a filter paper (12) sleeved on the outer side of the central tube (4); the upper end of the central tube (4) is communicated with the through hole (201); the central tube (4) is provided with a plurality of oil drain holes (401); the lower end of the central tube (4) is fixedly provided with a base (3); the upper end of the base (3) is rotatably connected to a rotating shaft (17); scrapers (801) are fixedly provided on both sides of the rotating shaft (17) through connecting columns (8); the scrapers (801) abut against the inner side of the central tube (4); and a plurality of spiral blades (18) are fixedly provided on the rotating shaft (17).

2. A high flow fuel filter according to claim 1, characterized in that: The non-return structure comprises a bottom ring (6), the bottom ring (6) being fixedly connected to the inner side of the main channel (101) via a plurality of transverse columns (601), a non-return spring (19) being fixedly provided at the upper end of the bottom ring (6), a baffle (10) being fixedly provided at the upper end of the non-return spring (19), a fixed plate (7) being fixedly provided at the lower end of the oil inlet pipeline (9), a flow opening (701) being provided at the center of the fixed plate (7), and an upper end surface of the baffle (10) abutting against a lower end surface of the fixed plate (7).

3. A high flow fuel filter according to claim 1, characterized in that: An annular protrusion (202) is fixedly provided on the upper end of the filter element upper cover (2), and an annular groove (104) is provided on the lower end of the sealing cover plate (1) at a position corresponding to the annular protrusion (202), and the annular protrusion (202) is clamped in the corresponding annular groove (104).

4. A high flow fuel filter according to claim 1, characterized in that: A clamping block (302) is fixedly provided at the lower end of the base (3), and a clamping groove (502) is provided at the upper end of the filter element lower cover (5) at a position corresponding to the clamping block (302), and the clamping block (302) is clamped in the corresponding clamping groove (502).

5. A high flow fuel filter according to claim 4, characterized in that: The lower end of the filter element lower cover (5) is provided with a spring groove (501), a high-elasticity spring (14) is fixedly arranged in the spring groove (501), and the lower end of the high-elasticity spring (14) is fixedly connected to the inner bottom end of the housing.

6. A large flow fuel filter according to claim 5, characterized in that: The filter element lower cover (5) is provided with a plurality of oil leakage holes (504), and the side plate of the filter element lower cover (5) is provided with an inclined surface 1 (503).

7. A high flow fuel filter according to claim 6, characterized in that: The base (3) is provided with a second inclined surface (301) on the side.

8. A high flow fuel filter according to claim 1, characterized in that: The housing comprises a bottom shell (13) and an upper cover (11), and the bottom shell (13) and the upper cover (11) are fixed by threaded connection.

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