Fuel oil filtering structure of diesel generator

Abstract

The utility model discloses a fuel oil filtering structure of a diesel generator, which belongs to the field of fuel oil filtering structures, and comprises a shell, a sealing cover and a filtering mechanism, after diesel oil enters the shell through an oil inlet, the diesel oil is guided between the shell and the inner wall of an outer cylinder under the action of a flow guide plate in the sealing cover, and at the moment, the fuel oil is filtered by the filtering mechanism. The coarse filter element filters out large-particle impurities, water, particulate matter and other pollutants, after coarse-filtered diesel oil penetrates through the oil hole to enter the space between the outer cylinder and the inner cylinder, the fine filter element further filters out fine impurities so as to achieve double fine filtration of the diesel oil, and the filtered diesel oil penetrates through the oil hole to be discharged through the oil outlet and then enters a diesel generator to be used. Compared with a filtering mode only depending on a single-layer filter element in the prior art, the filtering effect is greatly improved, pollutants entering an engine can be effectively reduced, and therefore abrasion of internal parts of the engine is remarkably reduced, the service life of the engine is prolonged, and the stability and reliability of operation of the diesel generator are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel filter structure field, especially diesel generator's fuel filter structure. BACKGROUND

[0002] The diesel generator is a kind of device with diesel oil as fuel, and it is converted into electric energy, belongs to self-provided power supply equipment.The core principle is to drive generator rotation by diesel engine: when diesel oil burns in engine cylinder, high-temperature high-pressure gas pushes piston reciprocating, and then drives crankshaft rotation;Crankshaft passes through transmission device (such as coupling) and is transferred to generator rotor, and rotor cuts magnetic force line when rotating in magnetic field, and according to electromagnetic induction principle, it produces alternating current.The equipment is usually composed of diesel engine, generator, control system, fuel system, cooling system and exhaust system etc., has independent power supply capacity, can be used in the scene of power interruption, remote area no power grid coverage or need mobile power supply, and is widely used in hospital, data center, construction site, field operation, ship etc.Field.

[0003] In prior art, in the actual operation process of diesel generator, diesel oil often contains impurities, moisture, particulate matter and other pollutants.If these pollutants directly enter the engine, it will inevitably cause the wear of internal components of the engine, thereby significantly shortening the service life of the engine.Therefore, fuel filter structure is an essential part for diesel generator.

[0004] At present, diesel filter is the most commonly used filtering equipment in diesel generator fuel system, generally installed between fuel tank and oil pump, and undertakes the filtering task of entering diesel generator fuel.However, the existing diesel filter has certain limitations.On the one hand, its structure is relatively simple, only relies on built-in single-layer filter element, and it is difficult to efficiently and completely filter impurities in diesel oil, and it cannot fully meet the strict requirements for fuel cleanliness.On the other hand, filter element and shell mostly adopt integrated structure design, when filter element is blocked by impurities due to long-term use, and needs to be replaced due to the decline of filtering effect, it is extremely inconvenient to operate, not only brings trouble to the assembly and cleaning work of filter element, but often can only choose to replace the whole diesel filter, which undoubtedly increases the use cost and maintenance burden. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a kind of diesel generator's fuel filter structure, can effectively solve the problems in the background art.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] The application discloses a fuel filtering structure of a diesel generator, which comprises a shell and a sealing cover, the top surface of the sealing cover is fixedly connected with an oil inlet, the bottom surface of the shell is fixedly connected with an oil outlet, the sealing cover is fixedly connected with the top end of the shell through a connecting mechanism, and the connecting mechanism comprises a connecting ring, a positioning block, a fixing rod, a spring, an L-shaped plate and a clamping tongue.

[0008] Further, the inner bottom surface of the sealing cover is fixedly installed with a flow guide plate.

[0009] Further, the inner bottom end of the shell is fixedly installed with an inner cylinder, and the inner bottom end of the shell and located outside the inner cylinder is fixedly installed with an outer cylinder, a plurality of oil holes are formed in the outer walls of the inner cylinder and the outer cylinder, the coarse filter element is sleeved on the outer wall of the inner cylinder and located between the inner cylinder and the outer cylinder, and the fine filter element is sleeved on the outer wall of the outer cylinder and located between the outer cylinder and the shell.

[0010] Further, the top end of the outer wall of the shell is fixedly installed with a fixing ring, a group of symmetrical positioning notches are formed in the top surface of the fixing ring, and clamping grooves are further formed in the inner two side walls of the positioning notches.

[0011] Further, the outer wall of the sealing cover is fixedly installed with a connecting ring, a group of symmetrical positioning blocks corresponding to the clamping grooves are fixedly installed on the bottom surface of the connecting ring, recesses are formed in the side walls of the positioning blocks and penetrate through the connecting ring, and through holes corresponding to the fixing ring are further formed in the groove inner walls of the recesses.

[0012] Further, the fixing rod is fixedly installed in the recess, the spring is sleeved on the outer portion of the fixing rod, the two ends of the spring are respectively fixedly installed with L-shaped plates, connecting holes are formed in the side walls of the horizontal portions of the L-shaped plates and are movably installed with the fixing rod through the connecting holes, the clamping tongues are fixedly installed on the outer side walls of the vertical portions of the L-shaped plates and are inserted into the clamping grooves through the through holes.

[0013] Compared with the prior art, the application has the following beneficial effects:

[0014] The utility model discloses a filter mechanism is provided, through diesel fuel enters the shell through the oil inlet, under the action of the flow guide plate in the sealing cap is guided into the inner wall between the shell and the outer tube, at this moment, the coarse filter element filters off the larger particle impurity, moisture and particulate matter and other pollutants, after the diesel fuel that passes through the oil hole enters between the outer tube and the inner tube, the fine filter element further filters the fine impurity, to realize the double fine filtration of diesel fuel, and the filtered diesel fuel will pass through the oil hole and discharge through the oil outlet and then enter the diesel generator and be used, compared with the filtering mode of only single layer filter element in the prior art, the filtering effect is greatly improved, the pollutants entering the engine can be effectively reduced, thereby the wear of the internal components of the engine is reduced significantly, the service life of the engine is prolonged, and the stability and reliability of the diesel generator operation are improved.

[0015] The connecting mechanism is provided, when the coarse filter element and the fine filter element need to be cleaned or replaced, the lateral part of the symmetrical L-shaped plate protruding on both sides of the connecting ring is pressed, the L-shaped plate moves along the fixing rod through the connecting hole, and the spring is forced to operate tightly until the clamping tongue moves out of the clamping groove and enters the perforation, and the sealing cover is taken off from the shell, and then the coarse filter element and the fine filter element can be taken out from the inside of the shell, so that when the coarse filter element and the fine filter element are blocked by impurities due to long-term use, the filtering effect is reduced, the coarse filter element and the fine filter element can be conveniently taken out for cleaning or replacement, and the whole filter cleaner does not need to be replaced, so that the assembly and cleaning work of the filter element are simplified, the use cost and maintenance burden are greatly reduced, and meanwhile, the coarse filter element, the fine filter element or both can be replaced according to the pollution degree and use frequency of diesel fuel, the practicality and adaptability of the fuel filtering structure are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic view of the utility model;

[0017] Figure 2 It is the whole structure split schematic view of the utility model;

[0018] Figure 3 It is the whole structure split schematic view of the utility model;

[0019] Figure 4 It is the split schematic view of the sealing cover of the utility model;

[0020] Figure 5 It is the whole structure schematic view of the shell of the utility model;

[0021] Figure 6 It is the structure split schematic view of the connecting mechanism of the utility model.

[0022] In the diagram: 1. Housing; 2. Sealing cap; 3. Oil inlet; 4. Oil outlet; 5. Connecting mechanism; 6. Filtering mechanism; 7. Inner cylinder; 8. Outer cylinder; 9. Oil hole; 10. Coarse filter element; 11. Fine filter element; 12. Guide plate; 13. Fixing ring; 14. Positioning notch; 15. Slot; 16. Connecting ring; 17. Positioning block; 18. Groove; 19. Perforation; 20. Fixing rod; 21. Spring; 22. L-shaped plate; 23. Connecting hole; 24. Tongue. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0024] like Figure 1 - Figure 6 As shown, a fuel filter structure for a diesel generator includes a housing 1 and a sealing cover 2. An oil inlet 3 is fixedly connected to the top surface of the sealing cover 2, and an oil outlet 4 is fixedly connected to the bottom surface of the housing 1. The sealing cover 2 is fixedly connected to the top of the housing 1 via a connecting mechanism 5. The connecting mechanism 5 includes a connecting ring 16, a positioning block 17, a fixing rod 20, a spring 21, an L-shaped plate 22, and a latch 24. The connecting ring 16 is fixedly connected to the outer wall of the sealing cover 2, and the bottom surface of the connecting ring 16 is fixedly connected to the positioning block 17. A fixing rod 20 is fixedly connected to the inside of the side wall, and a spring 21 is sleeved on the outside of the fixing rod 20. An L-shaped plate 22 is fixedly connected to both ends of the spring 21, and a latch 24 is fixedly connected to the outer side wall of the L-shaped plate 22. A filter mechanism 6 is provided inside the housing 1, and the filter mechanism 6 includes an inner cylinder 7, an outer cylinder 8, a coarse filter element 10, and a fine filter element 11. The inner cylinder 7 is fixedly connected inside the housing 1, and the outer cylinder 8 is fixedly connected to the outside of the inner cylinder 7. The coarse filter element 10 is sleeved on the outer wall of the inner cylinder 7, and the fine filter element 11 is sleeved on the outside of the outer cylinder 8.

[0025] like Figure 3 and Figure 4 As shown, a guide plate 12 is fixedly installed on the inner bottom surface of the sealing cover 2. The guide plate 12 changes the flow direction and path of the fuel. Through the blocking and guiding effect of the guide plate 12, the fuel can flow between the housing 1 and the outer cylinder 8, so that the coarse filter element 10 can pre-filter the fuel.

[0026] like Figure 2 and Figure 3As shown, the inner bottom end of the shell 1 is fixedly installed with an inner cylinder 7, and the inner bottom end of the shell 1 is fixedly installed with an outer cylinder 8 outside the inner cylinder 7, a plurality of oil holes 9 are formed on the outer walls of the inner cylinder 7 and the outer cylinder 8, a coarse filter element 10 is sleeved on the outer wall of the inner cylinder 7 and located between the inner cylinder 7 and the outer cylinder 8, and a fine filter element 11 is sleeved on the outer wall of the outer cylinder 8 and located between the outer cylinder 8 and the shell 1. When the fuel flows from the sealing cover 2 into the shell 1, it first passes through the coarse filter element 10 to block the larger impurities outside, then the fuel passes through the oil holes 9 on the outer cylinder 8 into the space between the outer cylinder 8 and the inner cylinder 7, and then passes through the fine filter element 11 for further filtration, and finally passes through the oil holes 9 on the inner cylinder 7 into the inner cylinder 7 and flows out from the oil outlet 4. This double filtration structure, that is, first passing through the fine filter element 11 for preliminary filtration to intercept larger impurities, water and particulate matter and other pollutants, and then passing through the coarse filter element 10 for further filtration of fine impurities, realizes fine filtration of fuel;

[0027] As shown in Figure 5 , the outer wall top end of the shell 1 is fixedly installed with a fixed ring 13, and a group of symmetrical positioning notches 14 are formed on the top surface of the fixed ring 13, and clamping grooves 15 are also formed on the inner sides of the positioning notches 14. The fixed ring 13, the positioning notches 14 and the clamping grooves 15 provide accurate positioning and reliable fixing for the connection of the sealing cover 2 and the shell 1. It ensures that the sealing cover 2 can be correctly installed on the shell 1, effectively prevents fuel leakage, ensures the sealing and stability of the fuel filtration structure, and also provides a convenient basis for subsequent disassembly and maintenance;

[0028] As shown in Figure 6 , the outer wall of the sealing cover 2 is fixedly installed with a connecting ring 16, and a group of symmetrical positioning blocks 17 corresponding to the clamping grooves 15 are fixedly installed on the bottom surface of the connecting ring 16. The side wall of the positioning block 17 is provided with a groove 18 penetrating through the connecting ring 16, and the groove 18 is provided with a through hole 19 corresponding to the fixed ring 13 on the groove inner wall. The design of the connecting ring 16, the positioning block 17, the groove 18 and the through hole 19 cooperates with the corresponding structure on the shell 1 to form a complete connection system. The connection between the sealing cover 2 and the shell 1 is more stable and reliable, and when disassembled, the clamping tongue 24 can be easily separated from the clamping groove 15 by pressing the L-shaped plate 22, realizing the disassembly of the sealing cover 2 and improving the convenience of maintenance;

[0029] As shown in Figure 6As shown, the fixed rod 20 is fixedly installed in the groove 18, and the outer part of the fixed rod 20 is sleeved with the spring 21, both ends of the spring 21 are fixedly installed with the L-shaped plate 22 respectively, and the connecting hole 23 is formed in the lateral part side wall and is movably installed with the fixed rod 20 through the connecting hole 23, the vertical part outer side wall of the L-shaped plate 22 is fixedly installed with the clamping tongue 24, and the clamping tongue 24 is inserted into the clamping groove 15 through the perforation 19, when the sealing cover 2 is installed, the clamping tongue 24 is inserted into the clamping groove 15 through the perforation 19 under the elastic force of the spring 21, so that the sealing cover 2 and the shell 1 are fixedly connected. When it is needed to be disassembled, the L-shaped plate 22 is pressed, the L-shaped plate 22 is moved along the fixed rod 20, the spring 21 is compressed, and the clamping tongue 24 is separated from the clamping groove 15, so that the sealing cover 2 can be conveniently and quickly disassembled from the shell 1, and the coarse filter element 10 and the fine filter element 11 can be taken out from the shell 1 for cleaning or replacement.

[0030] The specific use principle of the diesel filter structure matched with the diesel generator is as follows:

[0031] When the diesel oil enters into the shell 1 through the oil inlet 3 on the top surface of the sealing cover 2, the diesel oil flows to four sides under the blockage of the flow guide plate 12 and flows into the space between the shell 1 and the outer cylinder 8, at this time, the coarse filter element 10 sleeved on the outer wall of the outer cylinder 8 blocks the larger impurities outside, then the fuel oil enters into the space between the outer cylinder 8 and the inner cylinder 7 through the oil hole 9 on the outer cylinder 8, at this time, the fine filter element 11 sleeved on the outer part of the outer cylinder 8 further filters the fine impurities, so as to realize the double fine filtration of the diesel oil, and the filtered diesel oil passes through the oil hole 9 on the inner cylinder 7 and is discharged through the oil outlet 4 on the bottom surface of the shell 1 and then enters into the diesel generator for use, so that the filtration effect is greatly improved, the pollutants entering into the engine are effectively reduced, the abrasion of the internal parts of the engine is reduced, the service life of the engine is prolonged, and the stability and reliability of the diesel generator operation are improved;

[0032] When the coarse filter element 10 and the fine filter element 11 are blocked by impurities due to long time use, resulting in the decline of the filtering effect, after the fuel filter structure is removed from between the fuel tank and the fuel pump, the horizontal part of the symmetrical L-shaped plate 22 located on the two sides of the connecting ring 16 of the outer wall of the sealing cover 2 is pressed, the symmetrical L-shaped plate 22 will be moved in the recess 18, and the L-shaped plate 22 moves along the fixed rod 20 through the connecting hole 23 opened on the side wall of the horizontal part, and forces the spring 21 outside the fixed rod 20 to be tightened, until the clamping tongue 24 installed on the outer side wall of the vertical part of the L-shaped plate 22 is removed from the clamping slot 15 and enters the perforation 19, the pressing force on the L-shaped plate 22 is kept unchanged, the sealing cover 2 is lifted up through the L-shaped plate 22, and then the positioning block 17 on the bottom surface of the connecting ring 16 is removed from the positioning gap 14 opened on the top surface of the fixed ring 13 installed on the outer wall of the shell 1, so that the sealing cover 2 can be disassembled and the shell 1 is opened, then the coarse filter element 10 and the fine filter element 11 are directly taken out from the shell 1 for replacement or cleaning, and after the impurities in the shell 1 are removed and the new coarse filter element 10 and the fine filter element 11 are reassembled on the outer wall of the outer cylinder 8 and the inner cylinder 7, the sealing cover 2 is pressed and covered on the shell 1, and the positioning block 17 is entered into the positioning gap 14, the pressing force on the L-shaped plate 22 is released, the spring 21 is elastically recovered and stretched, the L-shaped plate 22 is pushed to the two sides, the clamping tongue 24 is inserted into the clamping slot 15 through the perforation 19, and the cleaning or replacement of the coarse filter element 10 and the fine filter element 11 is completed, so that the filter element can be conveniently taken out for cleaning or replacement, without replacing the entire filter, which not only simplifies the assembly and cleaning work of the filter element, but also greatly reduces the use cost and maintenance burden, and at the same time, the coarse filter element 10 and the fine filter element 11 can be replaced separately or simultaneously according to the pollution degree and use frequency of diesel oil, thereby improving the practicability and adaptability of the fuel filter structure.

[0033] The embodiments of the present application are given for the purpose of illustration and description, and are not exhaustive or limit the present application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to better explain the principles of the present application and its practical application, and to enable those of ordinary skill in the art to understand the present application in order to design various embodiments with various modifications suitable for specific uses.

Claims

1. A fuel filtering structure of a diesel generator, comprising a shell (1) and a sealing cover (2), a top surface of the sealing cover (2) is fixedly connected with an oil inlet (3), and a bottom surface of the shell (1) is fixedly connected with an oil outlet (4), characterized in that: The sealing cover (2) is fixedly connected to the top end of the shell (1) through a connecting mechanism (5), and the connecting mechanism (5) comprises a connecting ring (16), a positioning block (17), a fixing rod (20), a spring (21), an L-shaped plate (22) and a clamping tongue (24), the connecting ring (16) is fixedly connected to the outer wall of the sealing cover (2), the bottom surface of the connecting ring (16) is fixedly connected with the positioning block (17), the side wall of the positioning block (17) is fixedly connected with the fixing rod (20), the spring (21) is sleeved on the outside of the fixing rod (20), the L-shaped plate (22) is fixedly connected to the two ends of the spring (21), the outer side wall of the L-shaped plate (22) is fixedly connected with the clamping tongue (24), the inside of the shell (1) is provided with a filtering mechanism (6), and the filtering mechanism (6) comprises an inner cylinder (7), an outer cylinder (8), a coarse filter element (10) and a fine filter element (11), the inner cylinder (7) is fixedly connected in the shell (1), the outer cylinder (8) is fixedly connected to the outside of the inner cylinder (7), the coarse filter element (10) is sleeved on the outer wall of the inner cylinder (7), and the fine filter element (11) is sleeved on the outside of the outer cylinder (8).

2. The fuel filter structure of a diesel generator according to claim 1, characterized by: The inside bottom surface of the sealing cover (2) is fixedly installed with a flow guide plate (12).

3. The fuel filter arrangement of claim 2, wherein: The inside bottom end of the shell (1) is fixedly installed with the inner cylinder (7), and the inside bottom end of the shell (1) and the outside of the inner cylinder (7) are fixedly installed with the outer cylinder (8), a plurality of oil holes (9) are formed in the outer walls of the inner cylinder (7) and the outer cylinder (8), the coarse filter element (10) is sleeved on the outer wall of the inner cylinder (7) and located between the inner cylinder (7) and the outer cylinder (8), and the fine filter element (11) is sleeved on the outer wall of the outer cylinder (8) and located between the outer cylinder (8) and the shell (1).

4. The fuel filter arrangement of claim 3, wherein: The outer wall top end of the shell (1) is fixedly installed with a fixing ring (13), and a group of symmetrical positioning notches (14) are formed in the top surface of the fixing ring (13), and clamping grooves (15) are further formed in the inside two side walls of the positioning notches (14).

5. The fuel filter arrangement of claim 4, wherein: The outer wall of the sealing cover (2) is fixedly installed with a connecting ring (16), and a group of symmetrical positioning blocks (17) corresponding to the clamping grooves (15) are fixedly installed in the bottom surface of the connecting ring (16), recesses (18) are formed in the side walls of the positioning blocks (17) and penetrate through the connecting ring (16), and through holes (19) corresponding to the fixing ring (13) are further formed in the groove inner walls of the recesses (18).

6. The fuel filter arrangement of claim 5, wherein: The fixing rod (20) is fixedly installed in the recess (18), and the outside of the fixing rod (20) is sleeved with the spring (21), the two ends of the spring (21) are fixedly installed with the L-shaped plates (22), and the horizontal part side walls are provided with connecting holes (23) and are movably installed with the fixing rod (20) through the connecting holes (23), the vertical part outer side walls of the L-shaped plates (22) are fixedly installed with the clamping tongues (24), and the clamping tongues (24) are inserted into the clamping grooves (15) through the through holes (19).

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