Filtering device for oil injector of diesel engine

Abstract

The utility model belongs to the technical field of filtering devices, and particularly relates to a diesel injector filtering device which comprises a processing cavity, through holes are formed in the two sides of the processing cavity, filter screens are installed in the through holes, a rotating shaft is rotationally installed in the centers of the filter screens, a scraper is installed on the outer wall of one end of the rotating shaft, and a driven bevel gear is installed on the outer wall of the other end of the rotating shaft. A conveying pipe is mounted on one side of the treatment cavity, a rotating shaft is rotationally mounted between two sides of the conveying pipe, a driving bevel gear is mounted on the outer wall of the rotating shaft, and fan blades are mounted at one end of the rotating shaft; when fuel oil flows into the oil inlet pipe from the conveying pipe, flowing of the fuel oil can drive fan blades on a rotating shaft to rotate, a driving bevel gear rotates along with the fan blades, accordingly, a driven bevel gear and the rotating shaft are driven to rotate, a scraper blade can clean a filter screen, impurities are prevented from being accumulated on the filter screen to block meshes, and the filtering effect of the filter screen is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of filter devices, in particular to a filter device for a diesel engine injector. Background Art

[0002] The diesel engine injector sprays high-pressure fuel from the injection pump into the combustion chamber of the diesel engine in a specific spray form, at a precise time, and with an accurate injection amount. In order to prevent impurities from damaging the injector, a filtering device is used.

[0003] A Chinese patent with announcement number CN219242076U discloses a high-seal fuel injector for a diesel engine, including a fuel injector, an oil inlet pipe is provided on the top of the fuel injector, a nozzle is provided at the bottom of the fuel injector, and the fuel injector and a filtering device are composed. When impurities and dirt pass through the filtering device, they will be filtered on the filter net. The squeezing plate will drive the movable rod to slide on the slide groove through the support plate so that the spring will pop out the support plate, and then the filter net is cleaned, which can effectively prevent excessive dirt from affecting the use of the fuel injector.

[0004] However, the above-mentioned fuel injector still has some problems. In practical applications, when filtering the incoming oil, impurities will gradually accumulate on the filter screen, causing the pores of the filter screen to be blocked, thereby reducing the filtering efficiency and further affecting the normal fuel supply of the fuel injector. Therefore, a diesel engine fuel injector filter device is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the problems raised in the background technology, the utility model proposes a diesel engine injector filter device.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: a diesel engine injector filter device described in the utility model comprises an injector housing, an oil inlet pipe is installed on one side of the injector housing, a processing chamber is installed on the outer wall of one end of the oil inlet pipe, through holes are opened on both sides of the processing chamber, and a filter is installed inside the through holes on one side, a rotating shaft is rotatably installed at the center position of the filter, a scraper is installed on the outer wall of one end of the rotating shaft, the scraper and the filter are arranged in contact with the filter, a driven bevel gear is installed on the outer wall of the other end of the rotating shaft, a delivery pipe is installed on one side of the processing chamber, a rotating shaft is rotatably installed between the two sides of the delivery pipe, an active bevel gear is installed on the outer wall of the rotating shaft, and the active bevel gear and the driven bevel gear are meshed with each other, and five fan blades are equidistantly installed at the edge of one end of the rotating shaft, so as to realize cleaning of the filter, avoid clogging of the filter, and improve the filtering effect.

[0007] Preferably, the radius of the filter screen is equal to the inner diameter of the oil inlet pipe, and the processing chamber is connected to the delivery pipe through another through hole, so as to maximize the filtering area and improve the filtering efficiency, thereby ensuring smooth oil flow.

[0008] Preferably, a filter plate is installed between the two sides of the bottom side of the processing chamber, and the bottom end of the processing chamber forms an oil storage chamber with the cooperation of the filter plate. A discharge hole is opened on one side of the filter screen inside the bottom side of the oil inlet pipe, and the discharge hole is located directly above the filter plate, which effectively separates oil and impurities, facilitates cleaning, and ensures the normal operation of the injector.

[0009] Preferably, a movable door is installed on one side of the processing chamber through a hinge, a fixing buckle is installed on one side of the movable door, an oil drain pipe is connected to one side of the bottom end of the processing chamber, and the oil drain pipe is connected to the oil storage chamber to facilitate cleaning of impurities inside the processing chamber and improve the utilization rate of the oil.

[0010] Preferably, a servo motor is installed on the outer wall of the bottom side of the oil inlet pipe, and a connecting shaft is installed on the output end of the servo motor. One end of the connecting shaft passes through the oil inlet pipe and rotates to extend above it. A rotating plate is installed on the outer wall of the connecting shaft. The rotating plate is installed on the inner wall of the oil inlet pipe, and the radius of the rotating plate is equal to the inner diameter of the oil inlet pipe, so as to achieve precise control of the oil inlet flow rate and improve the injection accuracy of the injector.

[0011] Preferably, an indicator needle is fixed to the top side of the connecting shaft, a fixing ring is installed on the top outer wall of the oil inlet pipe, and a plurality of scale lines are equidistantly engraved on the top side of the fixing ring, the sum of the scale lines is degrees, so that the size of the oil inlet flow rate can be intuitively understood.

[0012] The utility model is beneficial in that:

[0013] 1. When the fuel flows from the delivery pipe into the oil inlet pipe, the flow of fuel will drive the fan blades on the rotating shaft to rotate, so that the active bevel gear rotates accordingly, thereby driving the driven bevel gear and the rotating shaft to rotate, so that the scraper can clean the filter screen to prevent impurities from accumulating on the filter screen and clogging the mesh, thereby ensuring the filtering effect of the filter screen;

[0014] 2. When a smaller oil inlet flow rate is required, the utility model controls the servo motor to rotate the connecting shaft so that the rotating plate blocks a larger cross-sectional area of ​​the oil inlet pipe, thereby reducing the amount of fuel passing through; conversely, when a larger oil inlet flow rate is required, the rotating plate is rotated to increase the fuel flow cross-sectional area of ​​the oil inlet pipe, thereby achieving precise control of the oil inlet flow rate and improving the injection accuracy of the injector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is a schematic diagram of the structure of the medium axis side view of the utility model;

[0017] Figure 2 It is a schematic diagram of the main structure of the fuel injector filter device;

[0018] Figure 3 A schematic diagram of a first three-dimensional structure of a cleaning component for a filter component;

[0019] Figure 4 A schematic diagram of a second three-dimensional structure of a cleaning assembly for a filter assembly;

[0020] Figure 5 It is a schematic diagram of the structure of the filtering component and the flow regulating component.

[0021] In the figure: 1. Injector housing; 2. Oil inlet pipe; 3. Processing chamber; 4. Filter screen; 5. Rotating shaft; 6. Scraper; 7. Driven bevel gear; 8. Delivery pipe; 9. Rotating shaft; 10. Active bevel gear; 11. Fan blade; 12. Filter plate; 13. Oil storage chamber; 14. Discharge hole; 15. Movable door; 16. Fixing buckle; 17. Oil discharge pipe; 18. Servo motor; 19. Connecting shaft; 20. Rotating plate; 21. Indicator needle; 22. Fixing ring; 23. Scale line. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4As shown, a diesel engine fuel injector filter device comprises a fuel injector housing 1, an oil inlet pipe 2 is installed on one side of the fuel injector housing 1, a processing chamber 3 is installed on the outer wall of one end of the fuel inlet pipe 2, through holes are opened on both sides of the processing chamber 3, a filter screen 4 is installed inside the through hole on one side, a rotating shaft 5 is rotatably installed at the center of the filter screen 4, a scraper 6 is installed on the outer wall of one end of the rotating shaft 5, the scraper 6 is arranged in close contact with the filter screen 4, and a driven bevel gear 7 is installed on the outer wall of the other end of the rotating shaft 5. A delivery pipe 8 is installed on one side of the processing chamber 3, and a rotating shaft 9 is rotatably installed between the two sides of the delivery pipe 8. An active bevel gear 10 is installed on the outer wall of the rotating shaft 9, and the active bevel gear 10 and the driven bevel gear 7 are meshed with each other. Five fan blades 11 are equidistantly installed at the edge of one end of the rotating shaft 9. A filter plate 12 is installed between the two sides of the bottom side of the processing chamber 3. The bottom end of the processing chamber 3 forms an oil storage chamber 13 under the cooperation of the filter plate 12. A discharge hole 1 is opened inside the bottom side of the oil inlet pipe 2 on one side of the filter screen 4. 4, a movable door 15 is installed on one side of the processing chamber 3 through a hinge, a fixing buckle 16 is installed on one side of the movable door 15, and an oil drain pipe 17 is connected to one side of the bottom end of the processing chamber 3; during operation, in actual application, impurities will gradually accumulate on the filter screen 4, causing the pores of the filter screen 4 to be blocked, thereby reducing the filtering efficiency and affecting the normal fuel supply of the injector. When the fuel flows from the delivery pipe 8 into the oil inlet pipe 2, the flow of the fuel will drive the fan blades 11 on the rotating shaft 9 to rotate, causing the active bevel gear 10 to rotate accordingly. Thereby, the driven bevel gear 7 and the rotating shaft 5 are driven to rotate, so that the scraper 6 can clean the filter screen 4 to prevent impurities from accumulating on the filter screen 4 and clogging the mesh holes, thereby ensuring the filtering effect of the filter screen 4. The impurities intercepted on the filter screen 4 will fall onto the filter plate 12 through the discharge hole 14 under the action of the scraper 6. The impurities are blocked by the filter plate 12, and the fuel after filtering again enters the oil storage chamber 13 and can be discharged through the oil drain pipe 17. After a period of time, the movable door 15 can be opened by the fixing buckle 16 to clean the filter plate 12.

[0024] See also Figure 1 , 25, a servo motor 18 is installed on the outer wall of the bottom side of the oil inlet pipe 2, and a connecting shaft 19 is installed on the output end of the servo motor 18. One end of the connecting shaft 19 penetrates the oil inlet pipe 2 and rotates to extend above it. A rotating plate 20 is installed on the outer wall of the connecting shaft 19, and the rotating plate 20 is installed on the inner wall of the oil inlet pipe 2. An indicator needle 21 is fixedly connected to the top side of the connecting shaft 19. A fixing ring 22 is installed on the outer wall of the top side of the oil inlet pipe 2, and a plurality of scale lines 23 are equidistantly engraved on the top side of the fixing ring 22; when working, different working conditions Under certain conditions, the diesel engine needs different amounts of fuel to achieve the best combustion effect. When a smaller oil intake flow rate is required, the servo motor 18 is controlled to rotate the connecting shaft 19 so that the rotating plate 20 blocks a larger cross-sectional area of ​​the oil inlet pipe 2, thereby reducing the amount of fuel passing through. On the contrary, when a larger oil intake flow rate is required, the rotating plate 20 is rotated to increase the fuel flow cross-sectional area of ​​the oil inlet pipe 2, and the indicator needle 21 will rotate with the connecting shaft 19. The degree of oil intake flow adjustment can be intuitively understood through the scale line 23, thereby achieving precise control of the oil intake flow rate and improving the injection accuracy of the injector.

[0025] Working principle: when a smaller oil inlet flow rate is required, the servo motor 18 is controlled to rotate the connecting shaft 19 so that the rotating plate 20 blocks the larger cross-sectional area of ​​the oil inlet pipe 2, thereby reducing the amount of fuel passing through; conversely, when a larger oil inlet flow rate is required, the rotating plate 20 is rotated to increase the fuel flow cross-sectional area of ​​the oil inlet pipe 2, and the indicator needle 21 will rotate with the connecting shaft 19. The degree of oil inlet flow adjustment can be intuitively understood through the scale line 23, thereby achieving accurate control of the oil inlet flow rate and improving the injection accuracy of the injector;

[0026] When the fuel flows from the delivery pipe 8 into the oil inlet pipe 2, the flow of the fuel will drive the fan blades 11 on the rotating shaft 9 to rotate, so that the active bevel gear 10 rotates accordingly, thereby driving the driven bevel gear 7 and the rotating shaft 5 to rotate, so that the scraper 6 can clean the filter screen 4 to prevent impurities from accumulating on the filter screen 4 and clogging the mesh holes, thereby ensuring the filtering effect of the filter screen 4. The impurities intercepted on the filter screen 4 will fall onto the filter plate 12 through the discharge hole 14 under the action of the scraper 6. The impurities are blocked by the filter plate 12, and the fuel after filtering again enters the oil storage chamber 13 and can be discharged through the oil drain pipe 17. After a period of time, the movable door 15 can be opened by the fixing buckle 16 to clean the filter plate 12.

[0027] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A diesel engine injector filter device, characterized in that: The invention comprises an injector housing (1), an oil inlet pipe (2) is installed on one side of the injector housing (1), a processing chamber (3) is installed on the outer wall of one end of the oil inlet pipe (2), through holes are opened on both sides of the processing chamber (3), a filter screen (4) is installed inside the through hole on one side, a rotating shaft (5) is rotatably installed at the center of the filter screen (4), a scraper (6) is installed on the outer wall of one end of the rotating shaft (5), and the scraper (6) and the filter screen (4) are connected to each other. ) are arranged in close contact with each other, a driven bevel gear (7) is installed on the outer wall of the other end of the rotating shaft (5), a delivery pipe (8) is installed on one side of the processing chamber (3), a rotating shaft (9) is rotatably installed between the two sides of the delivery pipe (8), an active bevel gear (10) is installed on the outer wall of the rotating shaft (9), and the active bevel gear (10) and the driven bevel gear (7) are meshed with each other, and five fan blades (11) are equidistantly installed at the edge of one end of the rotating shaft (9).

2. A diesel engine fuel injector filter device according to claim 1, characterized in that: The radius of the filter screen (4) is equal to the inner diameter of the oil inlet pipe (2), and the processing chamber (3) is connected to the delivery pipe (8) through another through hole.

3. A diesel engine fuel injector filter device according to claim 2, characterized in that: A filter plate (12) is installed between the two sides of the bottom side of the processing chamber (3); the bottom end of the processing chamber (3) forms an oil storage chamber (13) in cooperation with the filter plate (12); a discharge hole (14) is provided inside the bottom side of the oil inlet pipe (2) on one side of the filter screen (4); and the discharge hole (14) is located directly above the filter plate (12).

4. A diesel engine fuel injector filter device according to claim 3, characterized in that: A movable door (15) is installed on one side of the processing chamber (3) through a hinge, and a fixing buckle (16) is installed on one side of the movable door (15). An oil drain pipe (17) is connected to one side of the bottom end of the processing chamber (3), and the oil drain pipe (17) is connected to the oil storage chamber (13).

5. A diesel engine fuel injector filter device according to claim 4, characterized in that: A servo motor (18) is mounted on the outer wall of the bottom side of the oil inlet pipe (2); a connecting shaft (19) is mounted on the output end of the servo motor (18); one end of the connecting shaft (19) penetrates the oil inlet pipe (2) and rotates to extend above the oil inlet pipe; a rotating plate (20) is mounted on the outer wall of the connecting shaft (19); the rotating plate (20) is mounted on the inner wall of the oil inlet pipe (2), and the radius of the rotating plate (20) is equal to the inner diameter of the oil inlet pipe (2).

6. A diesel engine fuel injector filter device according to claim 5, characterized in that: An indicating needle (21) is fixedly connected to the top side of the connecting shaft (19), a fixing ring (22) is installed on the top outer wall of the oil inlet pipe (2), and a plurality of scale lines (23) are equidistantly engraved on the top side of the fixing ring (22), and the sum of the scale lines (23) is 180 degrees.

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