Diesel oil filter capable of automatically draining water
By introducing backflushing, drainage and cleaning mechanisms into the diesel filter, the problems of insufficient manual drainage of existing diesel filters and incomplete cleaning of impurities in the filter element are solved, automatic drainage and cleaning are achieved, and the filter performance and service life of the filter are improved.
Patent Information
- Application Number
- CN202510729944.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-03
- Publication Date
- 2025-07-22
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing diesel filters rely on manual operation in terms of drainage functions, which has the risk of failure of filter material in time due to untimely water accumulation, and it is impossible to clean the surface impurities of the filter element simultaneously during the drainage process. Traditional filters lack backflushing functions, resulting in high usage costs and waste of resources.
A diesel filter including a backwashing mechanism, a drainage mechanism and a cleaning mechanism is designed. Through automatic drainage and backwashing functions, the diesel filter element is automatically cleaned. The drainage is controlled by floating plates and pull ropes, and the elastic lever vibrates to clean the surface impurities of the filter element.
It realizes automatic drainage and cleaning of diesel filters, improves filtration effect, reduces maintenance work strength, avoids filter material infiltration failure and filter element clogging, and reduces replacement frequency and resource waste.
Smart Images
Figure CN120351085A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of engine fuel, and specifically relates to a diesel filter that can automatically drain water. Background Art
[0002] In a diesel engine system, as a key filtering component, the diesel filter undertakes the important function of removing solid particle impurities and free water in the fuel. Its performance directly affects the reliability and service life of the engine. Currently, the mainstream in the market is still fuel vehicle models meeting the National VI emission standards, and the market demand for diesel filters is strong. Among them, the existing diesel filter is composed of a housing, a filter element, a drain plug, a filter seat, a manual pump or an electric pump.
[0003] There are still several defects in the technical design of current mainstream diesel filter products that urgently need to be improved: First, in terms of the drainage function, a passive design is generally adopted, relying on manual periodic opening of the drain valve to drain accumulated water. This operation mode not only increases the work intensity of maintenance personnel, but also has the risk of water accumulation and filter material infiltration failure due to untimely drainage, and may seriously cause faults in the engine fuel supply system; Second, the existing structural design can only achieve a single function of separating filtration and drainage, and it is neither possible to synchronously clean the impurities attached to the surface of the filter element during the drainage process, making it difficult to achieve the coordinated operation of functions such as filtration and drainage; More prominently, traditional filters generally do not have the function of backwashing the filter element. Once the filter element is blocked, it must be replaced as a whole, which not only increases the use cost but also causes waste of resources. These technical shortboards seriously restrict the improvement of the comprehensive performance of diesel filters. Summary of the Invention
[0004] Aiming at the deficiencies of the prior art, the present invention provides a diesel filter that can automatically drain water, and solves the problems raised in the background art.
[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A diesel filter that can automatically drain water, including a housing, the bottom end of the housing is fixedly installed with a water collection box through threaded sealing, a positioning plate is fixedly installed inside the water collection box, a diesel filter element is placed on the top of the positioning plate, the top of the housing is fixedly installed with a top cover that cooperates with the diesel filter element, an anti-flushing mechanism that cooperates with the diesel filter element is installed inside the top cover, the anti-flushing mechanism is used to perform backwashing on the diesel filter element, a drainage mechanism is installed inside the water collection box, the drainage mechanism is used to drain the water in the water collection box, a cleaning mechanism that cooperates with the diesel filter element is installed on the positioning plate, the cleaning mechanism is used to clean the impurities on the surface of the diesel filter element, a plurality of oil inlet holes are annularly arrayed on the top of the top cover, an oil outlet hole is opened at the central position of the top cover, a connecting pipe is fixedly installed at the bottom end of the oil outlet hole, and a T-shaped oil outlet pipe that cooperates with the top end of the diesel filter element is fixedly installed at the bottom end of the connecting pipe.
[0006] Preferably, the backwashing mechanism includes an oil inlet pipe fixedly installed at the bottom of the oil inlet hole. A first bracket is fixedly installed inside the oil inlet pipe. A vertical rod is slidably connected through the center position of the first bracket. A first valve plug is fixed to the top end of the vertical rod. A valve seat is fixedly installed inside the oil inlet pipe and is matched with the first valve plug. A first spring is fixedly installed between the first valve plug and the first bracket.
[0007] Through the above technical solution, when diesel enters the oil inlet pipe through the oil inlet hole, it will squeeze the first valve plug. When the diesel stops flowing, the first spring will automatically drive the first valve plug to reset, thereby driving the vertical rod to move up and down reciprocally.
[0008] Preferably, an oil storage pipe is fixedly installed on the lower surface of the top cover and close to the oil inlet hole. A first L-shaped rod is fixedly installed on one side of the bottom end of the vertical rod. A piston plate that is hermetically slidably connected to the inside of the oil storage pipe is fixedly installed at one end of the first L-shaped rod. An annular oil storage groove is formed on the inner wall of the connecting pipe.
[0009] Through the above technical solution, when the vertical rod moves up and down, it can drive the first L-shaped rod to move up and down, and further drive the piston plate to move up and down in the oil storage pipe, achieving the effects of oil storage and oil discharge.
[0010] Preferably, a second L-shaped rod is fixedly installed on the other side of the bottom end of the vertical rod. One end of the second L-shaped rod penetrates through the bottom of the annular oil storage groove and is hermetically slidably connected to the inside of the annular oil storage groove. A piston ring that is hermetically slidably connected to the inner wall of the annular oil storage groove is fixedly installed at the top end of the second L-shaped rod. A second spring is fixedly installed between the bottom of the piston ring and the inner wall of the annular oil storage groove.
[0011] Through the above technical solution, when the vertical rod moves up and down, it can drive the second L-shaped rod to move up and down, and further drive the piston ring to move up and down in the oil storage ring, achieving the effects of oil storage and oil discharge.
[0012] Preferably, the drainage mechanism includes a drain pipe fixedly installed at the bottom of the water collection box. A plurality of collection holes are formed in the top of the positioning plate. A second bracket is fixedly installed at the inner bottom of the water collection box. A second valve plug that is matched with the top end of the drain pipe is slidably connected inside the second bracket. A third spring is fixedly installed between the second valve plug and the second bracket. A floating plate is arranged inside the water collection box. A pull rope is fixedly installed between the bottom end of the floating plate and the top end of the second valve plug.
[0013] Through the above technical solution, when diesel is inside the housing, since the density of water is greater than that of diesel, the water will settle downward at this time and then enter the water collection box through the collection holes. As the water level rises, it will drive the floating plate to move upward, and then pull the second valve plug upward through the pull rope to open the drain pipe at the bottom. At this time, the collected water will be automatically discharged. After the water is discharged, the floating plate loses buoyancy, and the third spring will automatically drive the second valve plug to reset and block the drain pipe to prevent diesel from leaking out.
[0014] Preferably, two guide rods are symmetrically and slidably connected through the outer surface of the floating plate, and the guide rods are fixedly installed at the inner bottom of the water collection box.
[0015] Through the above technical solution, the guide rods provided can guide the up and down movement of the floating plate to prevent the floating plate from tilting.
[0016] Preferably, the cleaning mechanism includes an annular ring rotatably connected to the top of the positioning plate. A plurality of elastic dial rods in contact with the surface of the diesel filter element are fixedly installed in an annular array on the inner wall of the annular ring. A plurality of first ball head sleeves are fixedly installed in an annular array on the outer surface of the annular ring. A plurality of connecting rods are fixedly installed on the top of the floating plate. The top ends of the connecting rods penetrate through the collection holes and are fixedly installed with second ball head sleeves. A ball head connecting rod is rotatably connected between the second ball head sleeve and the corresponding first ball head sleeve.
[0017] Through the above technical solution, as the floating plate rises, it will drive the connecting rods to rise. With the cooperation of the ball head connecting rod, the first ball head sleeve and the second ball head sleeve, the annular ring can be driven to rotate on the positioning plate. At this time, the elastic dial rods can be driven to rotate and dial the surface of the diesel filter element, causing the diesel filter element to vibrate. At this time, the impurities filtered by the diesel filter element will fall off, thus achieving the effect of removing impurities from the diesel filter element.
[0018] Preferably, an annular limiting groove is formed at the top of the positioning plate. The cross-sectional shape of the annular limiting groove is T-shaped. The bottom end of the annular ring is slidably connected to the inside of the annular limiting groove in a limited manner. A ball is embedded and rotatably connected to the bottom of the annular ring and is in contact with the inner bottom of the annular limiting groove.
[0019] Through the above technical solution, a corresponding T-shaped limiting slider can be installed at the bottom of the annular ring, which is adapted to the annular limiting groove, so that the annular ring can rotate stably on the positioning plate. By providing the balls, the friction between the annular ring and the annular limiting groove can be reduced, facilitating the rotation of the annular ring.
[0020] The present invention provides a diesel filter that can automatically drain water. It has the following beneficial effects: 1. The automatic-drainage diesel filter can, through the set backwashing mechanism, reverse-transport part of the filtered diesel to the outside of the diesel filter element when the diesel transportation stops, realizing the backwashing operation of the diesel filter element, cleaning the impurities inside the diesel filter element, and thus improving the filtering effect of the diesel.
[0021] 2. The automatic-drainage diesel filter can, through the set drainage mechanism and cleaning mechanism, automatically drain the water deposited at the bottom of the water collection box to avoid affecting the normal operation of the engine. Moreover, during the movement of the drainage mechanism, it can drive the cleaning mechanism to operate. The cleaning mechanism can stir the surface of the diesel filter element, causing the impurities on the surface of the diesel filter element to fall off due to vibration, and automatically cleaning the diesel filter element. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the internal structural schematic diagram of the present invention; Figure 3 is the structural schematic diagram of the water collection box, positioning plate and diesel filter element of the present invention; Figure 4 is the partial structural schematic diagram of the present invention; Figure 5 is the structural schematic diagram of the backwashing mechanism of the present invention; Figure 6 is the structural schematic diagram of the top cover of the present invention; Figure 7 is the internal structural schematic diagram of the backwashing mechanism of the present invention; Figure 8 For the present invention Figure 7 is the enlarged view of part A; Figure 9 is the structural schematic diagram of the drainage mechanism of the present invention; Figure 10 is the structural schematic diagram of the cleaning mechanism of the present invention.
[0023] In the figure, 1 is the housing; 2 is the water collecting box; 3 is the positioning plate; 4 is the diesel filter element; 5 is the top cover; 6 is the backwashing mechanism; 61 is the oil inlet pipe; 62 is the first bracket; 63 is the vertical rod; 64 is the first valve plug; 65 is the valve seat; 66 is the first spring; 67 is the oil storage pipe; 68 is the first L-shaped rod; 69 is the piston plate; 610 is the annular oil storage groove; 611 is the second L-shaped rod; 612 is the piston ring; 613 is the second spring; 7 is the drainage mechanism; 71 is the drain pipe; 72 is the collection hole; 73 is the second bracket; 74 is the second valve plug; 75 is the third spring; 76 is the floating plate; 77 is the pull rope; 78 is the guide rod; 8 is the cleaning mechanism; 81 is the annular ring; 82 is the elastic lever; 83 is the connecting rod; 84 is the ball head connecting rod; 9 is the oil inlet hole; 10 is the oil outlet hole; 11 is the connecting pipe; 12 is the T-shaped oil outlet pipe. Detailed implementation mode
[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0025] Embodiment: As Figures 1 to 10 shown, a diesel filter capable of automatically draining water includes a housing 1. The bottom end of the housing 1 is fixedly installed with a water collecting box 2 in a threaded and sealed manner. A positioning plate 3 is fixedly installed inside the water collecting box 2. A diesel filter element 4 is placed on the top of the positioning plate 3. The top of the housing 1 is fixedly installed with a top cover 5 that cooperates with the diesel filter element 4. Inside the top cover 5 is installed a backwashing mechanism 6 that cooperates with the diesel filter element 4. The backwashing mechanism 6 is used to backwash the diesel filter element 4. A drainage mechanism 7 is installed inside the water collecting box 2. The drainage mechanism 7 is used to drain the water in the water collecting box 2. A cleaning mechanism 8 that cooperates with the diesel filter element 4 is installed on the positioning plate 3. The cleaning mechanism 8 is used to clean the impurities on the surface of the diesel filter element 4. A plurality of oil inlet holes 9 are annularly arranged on the top of the top cover 5. An oil outlet hole 10 is opened at the center position of the top cover 5. The bottom end of the oil outlet hole 10 is fixedly installed with a connecting pipe 11. The bottom end of the connecting pipe 11 is fixedly installed with a T-shaped oil outlet pipe 12 that cooperates with the top end of the diesel filter element 4.
[0026] When in use, diesel enters the interior of the housing 1 through multiple oil inlet holes 9, is filtered through the diesel filter 4, and is then discharged through the oil outlet 10. The diesel will drive the backwashing mechanism 6 to operate when it enters and stops being transported. The backwashing mechanism 6 can backwash the diesel filter 4 and clean the internal impurities of the diesel filter 4. When the diesel is inside the housing, the moisture in the diesel will be deposited in the water collecting box 2 at the bottom. When a certain amount is reached, the drainage mechanism 7 will be triggered to discharge the accumulated water. During the drainage process, the cleaning mechanism 8 will move the diesel filter 4 and vibrate and clean the impurities on the surface of the diesel filter 4. The T-shaped oil outlet pipe 12 is provided to facilitate the normal operation of the backwashing mechanism 6.
[0027] like Figures 4 to 8 As shown, the backwash mechanism 6 includes an oil inlet pipe 61 fixedly mounted at the bottom of the oil inlet hole 9, a first bracket 62 fixedly mounted inside the oil inlet pipe 61, a vertical rod 63 slidably connected to the center of the first bracket 62, a first valve plug 64 fixedly mounted on the top of the vertical rod 63, a valve seat 65 matched with the first valve plug 64 fixedly mounted inside the oil inlet pipe 61, and a first spring 66 fixedly mounted between the first valve plug 64 and the first bracket 62. An oil storage pipe 67 is fixedly mounted on the lower surface of the top cover 5 and near the oil inlet hole 9, a first L-shaped rod 68 is fixedly mounted on one side of the bottom end of the vertical rod 63, a piston plate 69 sealed and slidably connected to the inside of the oil storage pipe 67 is fixedly mounted on one end of the first L-shaped rod 68, and an annular oil storage groove 610 is provided on the inner wall of the connecting pipe 11. A second L-shaped rod 611 is fixedly installed on the other side of the bottom end of the vertical rod 63, one end of the second L-shaped rod 611 passes through the bottom of the annular oil storage groove 610 and is sealingly and slidably connected to the inside of the annular oil storage groove 610, and a piston ring 612 is fixedly installed on the top of the second L-shaped rod 611 and is sealingly and slidably connected to the inner wall of the annular oil storage groove 610, and a second spring 613 is fixedly installed between the bottom of the piston ring 612 and the inner wall of the annular oil storage groove 610.
[0028] Diesel enters the fuel inlet pipe 61 through the fuel inlet hole 9, which can push the first valve plug 64 downward. Through the vertical rod 63, the first L-shaped rods 68 and the second L-shaped rods 611 on both sides can be driven to move downward. The downward movement of the first L-shaped rods 68 and the second L-shaped rods 611 can respectively drive the piston plate 69 and the piston ring 612 to move downward. The downward movement of the piston plate 69 can squeeze out the diesel stored in the fuel storage pipe 67, while the downward movement of the piston ring 612 can store part of the diesel in the annular oil storage groove 610. When the diesel delivery stops, at this time the first valve plug 64 loses the thrust, and under the action of the first spring 66 and the second spring 613, it can drive the first valve plug 64 to move upward and reset, and can drive the vertical rod 63 to move upward. At this time, through the first L-shaped rods 68 and the second L-shaped rods 611 on both sides, the piston plate 69 and the piston ring 612 can be respectively driven to move upward. The upward movement of the piston ring 612 can squeeze out the diesel in the annular oil storage groove 610, while the upward movement of the piston plate 69 can store part of the diesel in the fuel storage pipe 67, which can backwash the diesel filter element 4 while maintaining the oil pressure inside the housing 1, thereby improving the filtering effect of the diesel filter element 4.
[0029] As Figure 1 and Figure 2 shown, the drainage mechanism 7 includes a drain pipe 71 fixedly installed at the bottom of the water collection box 2. A plurality of collection holes 72 are opened at the top of the positioning plate 3. A second support 73 is fixedly installed at the inner bottom of the water collection box 2. A second valve plug 74 that cooperates with the top end of the drain pipe 71 is slidably connected inside the second support 73. A third spring 75 is fixedly installed between the second valve plug 74 and the second support 73. A floating plate 76 is arranged inside the water collection box 2. A pull rope 77 is fixedly installed between the bottom end of the floating plate 76 and the top end of the second valve plug 74.
[0030] There is often some water in diesel, and the density of water is greater than that of diesel. Therefore, after long-term use, a certain amount of water will accumulate at the bottom of the diesel filter. If it is not drained in time, it will affect the engine. The existing drainage method is generally manual operation, and drainage is carried out through the drain valve at the bottom, which cannot drain automatically and in time, and is likely to cause an impact. Therefore, in this technical solution, the water in diesel is deposited inside the water collection box 2 through the collection holes 72. As the water level rises, it will drive the floating plate 76 to rise. When it rises to a certain position, the floating plate 76 will pull the second valve plug 74 upward through the pull rope 77, and the bottom drain pipe 71 will be opened. At this time, the accumulated water will be automatically drained. After the water is drained, the floating plate 76 will move downward, the pull rope 77 will lose the tension, and under the action of the third spring 75, it can drive the second valve plug 74 to move downward to block the drain pipe 71 to prevent diesel leakage.
[0031] It should be noted that in this technical solution, the floating plate 76 needs to generate effective buoyancy in the accumulated water (aqueous phase) while avoiding excessive floating in diesel (oil phase). Since the density of diesel is about 0.82 - 0.86 g / cm³ and the density of water is 1 g / cm³, the density of the floating plate needs to satisfy ρ_floating plate < ρ_water (i.e., less than 1 g / cm³) to ensure that it can float as the water level rises during water accumulation and maintain a certain immersion depth in diesel (to avoid floating in the air). The specific range can be set at 0.6 - 0.9 g / cm³, preferably 0.7 - 0.8 g / cm³. Lightweight plastic materials such as polypropylene or polyethylene are used, and their density meets the requirements.
[0032] It should also be noted that the pull rope 77 in this technical solution adopts a composite structure of a woven core layer of poly(p-phenylene terephthalamide) fiber and a polytetrafluoroethylene coating. It has the effects of high strength and fatigue resistance, as well as all - dielectric corrosion resistance and low friction and high flexibility, enabling the pull rope 7 to have a long service life.
[0033] Two guide rods 78 are symmetrically and slidably connected through the outer surface of the floating plate 76, and the guide rods 78 are fixedly installed at the inner bottom of the water collection box 2. By providing the two guide rods 78, the lifting of the floating plate 76 can be guided, avoiding the deviation of the floating plate 76 and improving stability.
[0034] As Figure 3 、 Figure 9 and Figure 10 shown, the cleaning mechanism 8 includes an annular ring 81 rotatably connected to the top of the positioning plate 3. A plurality of elastic toggle rods 82 in contact with the surface of the diesel filter element 4 are fixedly installed in an annular array on the inner wall of the annular ring 81. A plurality of first ball head sleeves are fixedly installed in an annular array on the outer surface of the annular ring 81. A plurality of connecting rods 83 are fixedly installed on the top of the floating plate 76. The top ends of the connecting rods 83 penetrate through the collection holes 72 and are fixedly installed with second ball head sleeves. A ball head connecting rod 84 is rotatably connected between the second ball head sleeve and the corresponding first ball head sleeve.
[0035] During the water accumulation and drainage process, the floating plate 76 will rise and fall. The lifting of the floating plate 76 can drive the connecting rods 83 to rise and fall. With the cooperation of the ball head connecting rod 84, the first ball head sleeve and the second ball head sleeve, the annular ring 81 can be driven to rotate reciprocally. Then, the elastic toggle rods 82 on the inner wall of the annular ring 81 can toggle the diesel filter element 4, causing the impurities on the surface of the diesel filter element 4 to fall off due to vibration, and automatically cleaning the diesel filter element 4.
[0036] It should be noted that in this technical solution, the surface of the diesel filter element 4 is preferably a filter paper - type filter element, and the filter paper presents a wavy shape on the surface of the filter element, which is convenient for cooperation with the elastic toggle rods 82 for toggling.
[0037] Further, an annular limiting groove is formed at the top of the positioning plate 3. The cross-sectional shape of the annular limiting groove is T-shaped. The bottom end of the annular ring 81 is in limiting sliding connection with the inside of the annular limiting groove, and a ball in contact with the inner bottom of the annular limiting groove is embedded and rotatably connected to the bottom of the annular ring 81.
[0038] A corresponding T-shaped limiting slider can be installed at the bottom of the annular ring 81, which is adapted to the annular limiting groove, enabling the annular ring 81 to rotate stably on the positioning plate 3. By providing the balls, the friction between the annular ring 81 and the annular limiting groove can be reduced, facilitating the rotation of the annular ring 81.
[0039] Working principle: Diesel enters the fuel inlet pipe 61 through the fuel inlet hole 9, which can push the first valve plug 64 downward. Through the vertical rod 63, the first L-shaped rods 68 and the second L-shaped rods 611 on both sides can be driven downward. The downward movement of the first L-shaped rods 68 and the second L-shaped rods 611 can respectively drive the piston plate 69 and the piston ring 612 downward. The downward movement of the piston plate 69 can squeeze out the diesel stored in the fuel storage pipe 67, while the downward movement of the piston ring 612 can store part of the diesel in the annular fuel storage groove 610. When the diesel delivery stops, at this time, the first valve plug 64 loses the thrust, and under the action of the first spring 66 and the second spring 613, it can drive the first valve plug 64 to move upward and reset, driving the vertical rod 63 to move upward. At this time, through the first L-shaped rods 68 and the second L-shaped rods 611 on both sides, the piston plate 69 and the piston ring 612 can be respectively driven upward. The upward movement of the piston ring 612 can squeeze out the diesel in the annular fuel storage groove 610, while the upward movement of the piston plate 69 can store part of the diesel in the fuel storage pipe 67, which can backwash the diesel filter element 4 while maintaining the oil pressure inside the housing 1, thereby improving the filtering effect of the diesel filter element 4.
[0040] The moisture in the diesel is deposited inside the water collection box 2 through the collection holes 72. As the water level rises, the floating plate 76 will rise. When it rises to a certain position, the floating plate 76 will pull the second valve plug 74 upward through the pull rope 77, and the drain pipe 71 at the bottom will open. At this time, the deposited water will be automatically discharged. After the water is discharged, the floating plate 76 will move downward, the pull rope 77 will lose the tension, and under the action of the third spring 75, it can drive the second valve plug 74 to move downward to block the drain pipe 71 to prevent diesel leakage. During the water accumulation and drainage process, the floating plate 76 will rise and fall. The rise and fall of the floating plate 76 can drive the connecting rod 83 to rise and fall. With the cooperation of the ball head connecting rod 84 and the first ball head sleeve and the second ball head sleeve, the annular ring 81 can be driven to rotate reciprocally. Furthermore, through the elastic dial rod 82 on the inner wall of the annular ring 81, the diesel filter element 4 can be dialed, enabling the impurities on the surface of the diesel filter element 4 to fall off due to vibration, and automatically cleaning the diesel filter element 4.
[0041] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.
[0042] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An automatically drainable diesel filter, comprising a housing (1), characterized in that: A water collecting box (2) is installed at the bottom end of the housing (1). A positioning plate (3) is installed inside the water collecting box (2). A diesel fuel filter (4) is placed on the top of the positioning plate (3). A top cover (5) matched with the diesel fuel filter (4) is installed on the top of the housing (1). A backwashing mechanism (6) matched with the diesel fuel filter (4) is installed inside the top cover (5). The backwashing mechanism (6) is used for backwashing the diesel fuel filter (4). A drainage mechanism (7) is installed inside the water collecting box (2). The drainage mechanism (7) is used for draining the water in the water collecting box (2). A cleaning mechanism (8) matched with the diesel fuel filter (4) is installed on the positioning plate (3). The cleaning mechanism (8) is used for cleaning the impurities on the surface of the diesel fuel filter (4). A plurality of oil inlet holes (9) are formed in the top of the top cover (5). An oil outlet hole (10) is formed at the central position of the top cover (5). A connecting pipe (11) is installed at the bottom end of the oil outlet hole (10). A T-shaped oil outlet pipe (12) matched with the top end of the diesel fuel filter (4) is installed at the bottom end of the connecting pipe (11).
2. The automatic drainage diesel filter according to claim 1, wherein: The backwashing mechanism (6) includes an oil inlet pipe (61) installed at the bottom of the oil inlet hole (9). A first support (62) is installed inside the oil inlet pipe (61). A vertical rod (63) is slidably connected through the center of the first support (62). A first valve plug (64) is fixed at the top end of the vertical rod (63). A valve seat (65) matched with the first valve plug (64) is installed inside the oil inlet pipe (61). A first spring (66) is installed between the first valve plug (64) and the first support (62).
3. The automatic-drainage diesel filter according to claim 2, wherein: A fuel storage pipe (67) is installed on the lower surface of the top cover (5) and close to the oil inlet hole (9). A first L-shaped rod (68) is installed on one side of the bottom end of the vertical rod (63). A piston plate (69) which is hermetically and slidably connected with the inside of the fuel storage pipe (67) is installed at one end of the first L-shaped rod (68). An annular fuel storage groove (610) is formed in the inner wall of the connecting pipe (11).
4. The automatic drainage diesel filter according to claim 3, wherein: A second L-shaped rod (611) is installed on the other side of the bottom end of the vertical rod (63). One end of the second L-shaped rod (611) penetrates through the bottom of the annular fuel storage groove (610) and is hermetically and slidably connected with the inside of the annular fuel storage groove (610). A piston ring (612) which is hermetically and slidably connected with the inner wall of the annular fuel storage groove (610) is installed at the top end of the second L-shaped rod (611). A second spring (613) is installed between the bottom of the piston ring (612) and the inner wall of the annular fuel storage groove (610).
5. The automatic drainage diesel filter according to claim 1, wherein: The drainage mechanism (7) includes a drain pipe (71) installed at the bottom of the water collecting box (2). A plurality of collecting holes (72) are formed at the top of the positioning plate (3). A second bracket (73) is installed at the inner bottom of the water collecting box (2). A second valve plug (74) that cooperates with the top end of the drain pipe (71) is slidably connected inside the second bracket (73). A third spring (75) is installed between the second valve plug (74) and the second bracket (73). A floating plate (76) is provided inside the water collecting box (2). A pull rope (77) is installed between the bottom end of the floating plate (76) and the top end of the second valve plug (74).
6. The automatic drainage diesel filter according to claim 5, wherein: Two guide rods (78) are symmetrically and slidably penetrated through the outer surface of the floating plate (76). The guide rods (78) are installed at the inner bottom of the water collecting box (2).
7. The automatic-drainage diesel filter according to claim 5, wherein: The cleaning mechanism (8) includes an annular ring (81) rotatably connected to the top of the positioning plate (3). A plurality of elastic push rods (82) that contact the surface of the diesel filter element (4) are annularly arranged on the inner wall of the annular ring (81). A plurality of first ball head sleeves are annularly arranged on the outer surface of the annular ring (81). A plurality of connecting rods (83) are installed at the top of the floating plate (76). The top ends of the connecting rods (83) penetrate through the collecting holes (72) and are installed with second ball head sleeves. A ball head connecting rod (84) is rotatably connected between the second ball head sleeve and the corresponding first ball head sleeve.