Piston type oil delivery pump with filtering function

Abstract

The invention discloses a piston type oil delivery pump with a filtering function, and relates to the technical field of oil delivery pumps, the piston type oil delivery pump comprises a pump body, and further comprises a control assembly, a filtering assembly and a cleaning mechanism, check valves for controlling the flowing direction of oil are arranged at the joints of the oil inlet pipe and the pump body and the joints of the oil outlet pipe and the pump body. By arranging the filtering assembly, the oil delivery pump has the filtering function and can adapt to the size difference of different oil inlet and outlet pipes of the oil delivery pump; by arranging the control assembly, free disassembly and assembly of the filtering assembly are achieved, and switching between the filtering function and the cleaning function is achieved by controlling disassembly and assembly of the filtering assembly; by arranging the cleaning mechanism, after the filter assembly is disassembled, the filter screen is automatically scraped and cleaned.

Description

Technical Field

[0001] The present invention relates to the technical field of oil pumps, in particular to a piston type oil pump with a filtering function. Background Art

[0002] The piston oil transfer pump is a key component in the fuel system, mainly used to transfer fuel from the fuel tank to the injector. Its structure mainly consists of a piston assembly, an oil inlet valve assembly, an oil outlet valve assembly and a pump body. The piston oil transfer pump with filtering function adds a filtering mechanism on the basis of the traditional piston oil transfer pump, which can effectively remove impurities in the liquid, improve the quality of the transferred liquid and the service life of the equipment.

[0003] After searching, the Chinese patent with announcement number CN118481980B is found. The rear side of the oil pump body is fixedly connected with an oil inlet pipe, the front side of the oil pump body is fixedly connected with an oil outlet pipe, a filtering mechanism is arranged on the periphery of the oil outlet pipe, a cleaning mechanism is arranged inside the filtering mechanism, a collecting mechanism is arranged at the bottom of the filtering mechanism, and a connecting pipe is arranged on the periphery of the filtering mechanism. The filtering mechanism includes a filtering assembly and a fixing assembly. The filtering assembly is arranged on the front side of the oil outlet pipe. When in use, the filtering mechanism can be set to filter impurities in the oil during the process of transporting oil or other liquids through the filter disc in the filter pipe, thereby improving the use effect of the oil and the service life of the equipment, and can realize automatic connection and fixation between the filter pipe and the oil outlet pipe, thereby improving the installation and disassembly efficiency. When the filter disc is used for a long time, the filter disc can be replaced.

[0004] However, in the above scheme, all the filtering functions are set on the oil outlet side, and no coarse filtering function is set on the oil inlet side, resulting in that when the liquid is filtered, impurities will remain in the pump body for a long time, and some impurities may not be attached to the filter net, and repeatedly enter the pump body with the turbulence effect during the suction of the piston pump, which can easily affect the service life of the pump body; at the same time, the connection and fixing function between the filter tube and the oil outlet pipe in the above scheme is that the filter tube and the oil outlet pipe are of fixed size and cannot be freely adjusted, resulting in the need to replace the filter tube at the same time when the size of the oil outlet pipe is changed. Summary of the Invention

[0005] The object of the present invention is to provide a piston-type oil pump with a filtering function, which has the advantages of adaptive adjustment and filtering and cleaning, and solves the problems raised in the background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a piston-type oil pump with a filtering function, comprising a pump body, a control assembly, a filtering assembly, and a cleaning mechanism; an oil inlet pipe and an oil outlet pipe are respectively passed through the two sides of the pump body; and check valves for controlling the flow direction of the oil are provided at the connection between the oil inlet pipe and the oil outlet pipe and the pump body; The control assembly includes an adjustment mechanism for realizing mode switching and a telescopic mechanism for cooperating with the filter assembly for disassembly and assembly. The adjustment mechanism includes a fixing seat provided on one side of the pump body; the telescopic mechanism is in transmission connection with the adjustment mechanism. The filter assembly includes a sleeve for assisting the flow of oil in and out and a worm for controlling assembly and disassembly, and the sleeve is fixedly connected to the telescopic mechanism.

[0007] Preferably, cavity one and cavity two are sequentially provided inside the fixing seat from top to bottom, a positioning groove is provided on the side of the middle section of the top end of the fixing seat away from the pump body, the positioning groove is communicated with cavity one, a positioning ring is slidably connected to the middle section of cavity one, a handle is fixedly connected to the outer contour of the positioning ring, the handle is slidably connected to the positioning groove, and locking pins are provided at both ends of the positioning groove for positioning the handle, and the locking pins are connected to the fixing seat for damping rotation through a pin shaft.

[0008] Preferably, a limiting groove is provided in the middle section of the inner contour of the positioning ring, guide grooves are provided on both sides of the inner contour of the positioning ring, and both ends of the cavity are slidingly connected with auxiliary rings, and the end face structure of the auxiliary ring is consistent with that of the positioning ring.

[0009] Preferably, the telescopic mechanism includes a driving shaft arranged in cavity 1 and driven by a built-in motor, the middle section of the driving shaft is fixedly connected to a limiting ring, the limiting ring is connected to the limiting groove for limiting rotation, the driving shaft is fixedly connected to threaded parts on the outer contours on both sides of the limiting ring, the threads of the two threaded parts are in opposite directions, the driving shaft is sleeved with screw barrels on the outer contours on both sides of the limiting ring, the two screw barrels are threadedly connected to the driving shaft through the threaded parts at corresponding positions, the two sides of the outer contours of the two screw barrels are fixedly connected to guide rods, and multiple guide rods are limitedly slidably connected to the guide grooves at corresponding positions.

[0010] Preferably, the sleeves are provided with two and are respectively located on the side surfaces at both ends of the drive shaft, the inner contours of the two sleeves are fixedly connected to one end close to the pump body with a silicone sleeve, the middle sections of the inner contours of the two sleeves are fixedly connected to a conical filter screen, one side of the outer contours of the two sleeves are fixedly connected to a connecting block, the two sleeves are fixedly connected to the corresponding position screw barrel through the connecting block, the outer contours of the two sleeves are fixedly connected to one end close to the pump body with a fixing ring, and the tops of the outer contours of the two sleeves close to one end of the fixing ring are fixedly connected to an upward extending bracket.

[0011] Preferably, the worm gears are provided with two and are respectively located in the middle of the brackets at the corresponding positions, the axis centers of the two worm gears are fixedly connected with adjustment shafts extending to both sides, the two adjustment shafts are passed through and are limitedly rotatably connected with the brackets at the corresponding positions, the bottom ends of the two worm gears are meshingly connected with double-sided gear rings, the two double-sided gear rings are limitedly rotatably connected to the end of the corresponding fixed ring close to the pump body, the inner contours of the two double-sided gear rings are meshingly connected with a plurality of spur gears, the plurality of spur gears are rotatably connected to the inner contour of the sleeve close to the pump body through a pin shaft, the outer contour of each of the spur gears is meshingly connected with a spur rack, each spur rack passes through and is slidably connected to the fixed ring at the corresponding position, and the end of each spur rack away from the fixed ring is fixedly connected with a clamping plate.

[0012] Preferably, the two conical filter screens are arranged in opposite directions and are respectively directed from the pump body to the oil inlet pipe and the oil outlet pipe, and the multiple clamping plates are assembled together to form a ring structure.

[0013] Preferably, the cleaning mechanism includes a dual-axis motor arranged in the middle section of the second cavity, and output shafts are provided at both ends of the dual-axis motor, and the ends of the two output shafts away from the dual-axis motor are fixedly connected to sponge pads, and sensors are sleeved on the outer contours of the bottoms of the two sponge pads, and the ends of the two sensors away from the sponge pads are fixedly connected to compression springs, and the ends of the two compression springs away from the sensors are fixedly connected to the outer contours on both sides of the fixing seat.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a filter assembly so that the oil pump has a filtering function and can adapt to the size differences of different inlet and outlet oil pipes of the oil pump, thereby avoiding the situation where the filtering function does not match and thus causes filtering failure due to replacement of the inlet and outlet oil pipes.

[0015] 2. The present invention realizes the free disassembly and assembly of the filter assembly by setting a control assembly, and realizes the switching of the filtering function and the cleaning function by controlling the disassembly and assembly of the filter assembly.

[0016] 3. The present invention is provided with a cleaning mechanism, which automatically scrapes and cleans the filter screen after the filter assembly is disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 This is a cross-sectional view of the main structure of the present invention; Figure 3 This is a schematic diagram of the pump structure of the present invention; Figure 4 This is a schematic diagram of the connection relationship of the control components of the present invention; Figure 5 This is an exploded view of the regulating mechanism of the present invention; Figure 6 This is an exploded view of the telescopic mechanism of the present invention; Figure 7 is a schematic diagram of the filter assembly of the present invention; Figure 8 This is an exploded view of the filter assembly of the present invention; Figure 9 Schematic diagram of the cleaning mechanism of the present invention.

[0018] In the figure: 1. Pump body; 11. Oil inlet pipe; 12. Oil outlet pipe; 13. Check valve; 2. Fixed seat; 21. Cavity 1; 22. Cavity 2; 23. Positioning groove; 24. Positioning ring; 25. Limiting groove; 26. Guide groove; 27. Auxiliary ring; 28. Locking pin; 29. Handle; 3. Drive shaft; 31. Limiting ring; 32. Threaded part; 33. Screw barrel; 34. Guide rod; 4. Sleeve; 41. Silicone sleeve; 42. Conical filter; 43. Connecting block; 44. Fixed ring; 45. Bracket; 5. Worm; 51. Adjusting shaft; 52. Double-sided gear ring; 53. Spur gear; 54. Spur rack; 55. Locking plate; 6. Dual-axis motor; 61. Output shaft; 62. Sponge pad; 63. Sensor; 64. Compression spring. DETAILED DESCRIPTION

[0019] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] Example 1:

[0021] See also Figures 1 to 9 The present invention provides a technical solution: a piston-type oil pump with a filtering function, comprising a pump body 1, a control component, a filtering component, and a cleaning mechanism. An oil inlet pipe 11 and an oil outlet pipe 12 are respectively passed through the two sides of the pump body 1. The connection between the oil inlet pipe 11 and the oil outlet pipe 12 and the pump body 1 is provided with a check valve 13 for controlling the flow direction of the oil. The control assembly includes an adjustment mechanism for realizing mode switching and a telescopic mechanism for cooperating with the filter assembly for disassembly and assembly. The adjustment mechanism includes a fixing seat 2 provided on one side of the pump body 1; the telescopic mechanism is in transmission connection with the adjustment mechanism; The filter assembly includes a sleeve 4 for assisting the flow of oil in and out and a worm 5 for controlling assembly and disassembly. The sleeve 4 is fixedly connected to the telescopic mechanism.

[0022] In this solution, the oil enters from the oil inlet pipe 11 and is pumped out from the oil outlet pipe 12 by the suction action of the pump body 1. Its working principle is consistent with that of a conventional piston diaphragm pump, and the backflow of the oil is suppressed by the intermittent opening and closing of the check valve 13. When the oil passes through the oil inlet pipe 11 and the oil outlet pipe 12, the oil is filtered by a filter assembly. On the oil inlet side, that is, at the position of the oil inlet pipe 11, the oil is coarsely filtered to effectively intercept large particles of impurities in the oil to ensure the working life of the pump body 1; on the oil outlet side, that is, at the position of the oil outlet pipe 12, the oil is finely filtered to filter out fine impurities and further ensure the pumping quality of the oil.

[0023] It should be noted that the oil suction stroke of the pump body 1 depends on negative pressure. Direct fine filtration at the oil inlet pipe 11 is likely to cause excessive flow resistance of the oil, thereby affecting the performance of the pump body 1. Therefore, graded filtration is performed at the oil inlet pipe 11 and the oil outlet pipe 12.

[0024] On the other hand, during the operation of the piston pump, there is a situation where the oil inlet pipe 11 and the oil outlet pipe 12 of different sizes need to be replaced due to scene requirements. At this time, it is necessary to operate the control component to complete the disassembly of the filter component. During the disassembly and assembly of the filter component, the cleaning mechanism works synchronously to complete the scraping and cleaning operation of the filter component. After the replacement of the oil inlet pipe 11 and the oil outlet pipe 12 is completed, the installation operation of the filter component is completed, and the filter component is adjusted to complete the engagement with the oil inlet pipe 11 and the oil outlet pipe 12. Through the adjustable design of the engagement degree of the filter component, it can adapt to oil inlet pipes 11 and oil outlet pipes 12 of different sizes, thereby effectively expanding the application scenarios of the solution.

[0025] Example 2:

[0026] See also Figures 4 to 6 This embodiment is further explained on the basis of the first embodiment: the interior of the fixing seat 2 is sequentially provided with a cavity 1 21 and a cavity 2 22 from top to bottom, a positioning groove 23 is provided on the side of the middle section of the top end of the fixing seat 2 away from the pump body 1, the positioning groove 23 is communicated with the cavity 1 21, and a positioning ring 24 is slidably connected to the middle section of the cavity 1 21, and a handle 29 is fixedly connected to the outer contour of the positioning ring 24, and the handle 29 is slidably connected to the positioning groove 23, and both ends of the positioning groove 23 are provided with a locking pin 28 for positioning the handle 29, and the locking pin 28 is connected to the fixing seat 2 through a pin shaft for damping rotation.

[0027] A limiting groove 25 is provided in the middle section of the inner contour of the positioning ring 24, and guide grooves 26 are provided on both sides of the inner contour of the positioning ring 24. Auxiliary rings 27 are connected to the two ends of the cavity 1 21 for limiting sliding. The auxiliary rings 27 have the same end face structure as the positioning ring 24.

[0028] The telescopic mechanism includes a driving shaft 3 arranged in a cavity 21 and driven by a built-in motor. The middle section of the driving shaft 3 is fixedly connected to a limiting ring 31, and the limiting ring 31 is connected to the limiting groove 25 for limiting rotation. The driving shaft 3 is fixedly connected to a threaded portion 32 on the outer contour on both sides of the limiting ring 31, and the threads of the two threaded portions 32 are in opposite directions. The driving shaft 3 is sleeved with a screw barrel 33 on the outer contour on both sides of the limiting ring 31. The two screw barrels 33 are threadedly connected to the driving shaft 3 through the threaded portions 32 at corresponding positions. Guide rods 34 are fixedly connected to both sides of the outer contour of the two screw barrels 33, and multiple guide rods 34 are limitedly slidably connected to the guide grooves 26 at corresponding positions.

[0029] As can be seen from the first embodiment, the control component completes the switching between the working mode and the cleaning mode of the filter component. Figure 1 The figure shows the state of the filter assembly in the working mode, at which time the filter assembly is engaged with the oil inlet pipe 11 and the oil outlet pipe 12.

[0030] When the filter assembly needs to be disassembled, first adjust the filter assembly to release the engagement with the oil inlet pipe 11 and the oil outlet pipe 12, and then control the built-in motor of the drive shaft 3 to start and drive the drive shaft 3 to rotate. Since the threaded portion 32 is fixedly connected to the outer contour of the drive shaft 3, that is, the threaded portion 32 rotates synchronously with the drive shaft 3, and the screw barrel 33 is fixedly connected to the guide rod 34, the guide rod 34 is also limited and slidably connected to the inside of the guide groove 26, and the handle 29 is limited by the damping friction of the locking pin 28 and remains in a fixed state, that is, the handle 29 and the positioning ring 24 are both fixed under the action of the friction resistance between the locking pin 28 and the fixing seat 2, further causing the guide rod 34 and the screw barrel 33 to be unable to rotate. At this time, the rotation of the threaded portion 32, under the action of its screw connection relationship with the screw barrel 33, causes the screw barrel 33 and the guide rod 34 to slowly extend.

[0031] Since the filter assembly is fixedly connected to the screw barrel 33, the screw barrel 33 will drive the filter assembly as a whole to slowly extend outward, and at the same time, the engagement between the filter assembly and the oil inlet pipe 11 and the oil outlet pipe 12 has been released. Therefore, the filter assembly can be disassembled smoothly, making it easier for personnel to replace the oil inlet pipe 11 and the oil outlet pipe 12.

[0032] Furthermore, when the drive shaft 3 rotates and causes the screw cylinder 33 and the guide rod 34 to extend to the limit position, the screw cylinder 33 and the guide rod 34 cannot continue to extend, resulting in the rotation of the drive shaft 3 being blocked. At this time, the built-in motor is controlled to stop driving the drive shaft 3, and then the handle 29 is manually moved upward along the positioning groove 23. During this process, the force of manually moving the handle 29 needs to overcome the friction resistance between the locking pin 28 and the fixed seat 2, so that the handle 29 moves along the positioning groove 23 and drives the positioning ring 24 to rotate. Since the arc of the positioning groove 23 is ninety degrees, the maximum rotation angle of the positioning ring 24 and the handle 29 is also ninety degrees. When the positioning ring 24 rotates ninety degrees, the handle 29 is re-engaged with the damping locking pin 28 on the other side, so that the positioning ring 24 remains stationary in its current state after rotation.

[0033] Synchronously, the positioning ring 24 further drives the guide rod 34 and the screw barrel 33 to rotate synchronously through the guide groove 26. At this time, the filter assembly rotates ninety degrees along with the screw barrel 33, so that the filter assembly corresponds to the position of the cleaning mechanism; then the built-in motor is controlled to drive the drive shaft 3 to reverse, and the screw barrel 33 and the guide rod 34 further drive the filter assembly to shrink as a whole until the screw barrel 33 and the guide rod 34 shrink to the limit position. At this time, the filter assembly is fitted with the cleaning group mechanism, and the cleaning mechanism automatically opens and completes the scraping and cleaning operation of the filter assembly.

[0034] Furthermore, after the oil inlet pipe 11 and the oil outlet pipe 12 are replaced, the screw cylinder 33 and the guide rod 34 are controlled again to drive the filter assembly to extend to the extreme position, and the handle 29 is toggled in the opposite direction to complete the reset. At this time, the filter assembly corresponds to the position of the oil inlet pipe 11 and the oil outlet pipe 12 again, and then the screw cylinder 33 and the guide rod 34 are controlled to drive the filter assembly to retract, and the degree of engagement between the filter assembly and the oil inlet pipe 11 and the oil outlet pipe 12 is adjusted to complete the installation process of the filter assembly.

[0035] It should be noted that while the drive shaft 3 rotates, the limit ring 31 rotates synchronously due to its fixed connection with the drive shaft 3. Since the handle 29 is limited and slides inside the positioning groove 23, the fixed seat 2 is in a fixed state, that is, the handle 29 cannot move in the horizontal direction. Furthermore, the positioning ring 24 and the limit groove 25 cannot achieve horizontal displacement because the limit ring 31 is limited and slides inside the limit groove 25. Therefore, the drive shaft 3 and the limit ring 31 are also unable to achieve horizontal displacement, thereby preventing the drive shaft 3 from escaping from both sides of the fixed seat 2 while rotating, further ensuring the disassembly and assembly effect of the scheme.

[0036] Example 3:

[0037] See also Figure 7 and Figure 8This embodiment further explains on the basis of the second embodiment: the sleeves 4 are provided with two and are respectively located on the side surfaces of both ends of the drive shaft 3, the inner contours of the two sleeves 4 are fixedly connected to one end of the pump body 1 with a silicone sleeve 41, the middle sections of the inner contours of the two sleeves 4 are fixedly connected to a conical filter screen 42, one side of the outer contours of the two sleeves 4 are fixedly connected to a connecting block 43, and the two sleeves 4 are fixedly connected to the corresponding position of the screw barrel 33 through the connecting block 43, the outer contours of the two sleeves 4 are fixedly connected to one end of the pump body 1 with a fixing ring 44, and the tops of the outer contours of the two sleeves 4 are fixedly connected to one end of the fixing ring 44.

[0038] The two worm gears 5 are provided with two and are respectively located in the middle of the corresponding position bracket 45. The axis centers of the two worm gears 5 are fixedly connected with adjustment shafts 51 extending to both sides. The two adjustment shafts 51 are both passed through and are limitedly rotated with the brackets 45 at the corresponding positions. The bottom ends of the two worm gears 5 are meshed and connected with bilateral gear rings 52. The two bilateral gear rings 52 are both limitedly rotated and connected to the corresponding position fixing ring 44 near the end of the pump body 1. The inner contours of the two bilateral gear rings 52 are meshed and connected with multiple spur gears 53. The multiple spur gears 53 are all connected to the inner contour of the sleeve 4 near the pump body 1 through a pin shaft. The outer contour of each spur gear 53 is meshed and connected with a spur rack 54. Each spur rack 54 passes through and is slidably connected to the fixing ring 44 at the corresponding position. The end of each spur rack 54 away from the fixing ring 44 is fixedly connected with a clamping plate 55.

[0039] The two conical filter screens 42 are arranged in opposite directions and point from the pump body 1 to the oil inlet pipe 11 and the oil outlet pipe 12 respectively, and the multiple clamping plates 55 are assembled together to form a ring structure.

[0040] It can be seen from the second embodiment that in the process of the filter assembly being disengaged from the outer contour of the oil inlet pipe 11 and the oil outlet pipe 12, it is necessary to adjust the degree of engagement between the filter assembly and the oil inlet pipe 11 and the oil outlet pipe 12. At this time, the adjusting shaft 51 is manually rotated. Since the adjusting shaft 51 is fixedly connected to the worm 5, the worm 5 rotates synchronously and further drives the double-sided ring gear 52 to rotate, and the double-sided ring gear 52 further drives the spur gear 53 to rotate. Since the spur gear 53 is connected to the inner contour of the sleeve 4 near one end of the pump body 1 in a fixed-axis rotation, and the spur rack 54 is limited by the fixing ring 44 and can only achieve telescopic sliding, that is, the spur gear 53 rotates synchronously under the meshing action of the double-sided ring gear 52 and drives the spur rack 54 to start telescoping.

[0041] by Figure 8For example, when the adjusting shaft 51 is rotated clockwise, the worm 5 drives the double-sided gear rings 52 to rotate clockwise synchronously. At this time, the spur gear 53 rotates clockwise synchronously and drives the spur rack 54 to extend outward; when the adjusting shaft 51 is rotated counterclockwise, the worm 5 drives the double-sided gear rings 52 to rotate counterclockwise synchronously. At this time, the spur gear 53 rotates counterclockwise synchronously and drives the spur rack 54 to retract inward; since the spur rack 54 is fixedly connected to the engaging plate 55, the engaging plate 55 has the same movement trajectory as the spur rack 54, both of which are telescopic movements pointing to the axis of the fixing ring 44.

[0042] Furthermore, when the locking plate 55 expands outward, it releases the engagement with the oil inlet pipe 11 and the oil outlet pipe 12, and the filter assembly can be smoothly removed as the screw barrel 33 and the guide rod 34 extend; when 554 retracts inward, it re-engages with the oil inlet pipe 11 and the oil outlet pipe 12, thereby completing the installation of the filter assembly; by controlling the degree of expansion and contraction of the locking plate 55, the filter assembly can be adapted to oil inlet pipes 11 and oil outlet pipes 12 of different sizes, and due to the self-locking characteristics between the worm 5 and the bilateral ring gears 52, during the operation of the filter assembly, the bilateral ring gears 52 and the spur gear 53 will not rotate accidentally, that is, the spur rack 54 and the locking plate 55 always remain in a fixed state, thereby ensuring the continuous engagement connection between the filter assembly and the oil inlet pipe 11 and the oil outlet pipe 12, and avoiding accidental loosening of the filter assembly.

[0043] On the other hand, during the operation of the filtering assembly, when the oil enters the pump body 1 from the oil inlet pipe 11, coarse filtration is achieved through the conical filter screen 42 at the position of the oil inlet pipe 11. At this time, large particles of impurities in the oil are intercepted and collected inside the conical filter screen 42 at the position of the oil inlet pipe 11. Subsequently, the oil is pumped out from the oil outlet pipe 12 under the action of the pump body 1. In this process, fine filtration is achieved through the conical filter screen 42 at the position of the oil outlet pipe 12, and fine impurities in the oil are intercepted and collected to ensure the pumping quality of the oil. Among them, the gap between the outer walls of the oil inlet pipe 11 and the oil outlet pipe 12 and the inner wall of the sleeve 4 is filled with silicone sleeve 41 to further prevent oil backflow.

[0044] Example 4:

[0045] See also Figure 9 This embodiment further explains on the basis of the third embodiment: the cleaning mechanism includes a dual-axis motor 6 arranged in the middle section of the second cavity 22, and output shafts 61 are provided at both ends of the dual-axis motor 6, and the ends of the two output shafts 61 away from the dual-axis motor 6 are fixedly connected to sponge pads 62, and the outer contours of the bottoms of the two sponge pads 62 are sleeved with sensors 63, and the ends of the two sensors 63 away from the sponge pads 62 are fixedly connected to compression springs 64, and the ends of the two compression springs 64 away from the sensors 63 are fixedly connected to the outer contours on both sides of the fixing seat 2.

[0046] It can be seen from Example 1 and Example 3 that during the disassembly of the filter assembly, when the screw barrel 33 and the guide rod 34 are retracted to the extreme position, the cleaning mechanism is automatically turned on. At this time, the inner contour of the conical filter 42 contacts the outer wall of the sponge pad 62 and squeezes the sensor 63. The compression spring 64 is deformed under the squeezing of the conical filter 42 on the sensor 63. The sensor 63 detects the pressure value and controls the dual-axis motor 6 to turn on after reaching the trigger threshold. The dual-axis motor 6 further drives the output shaft 61 and the sponge pad 62 to rotate, and the rotation of the sponge pad 62 realizes the scraping and cleaning operation of the inner contour of the conical filter 42.

[0047] Furthermore, when the screw cylinder 33 and the guide rod 34 are extended, the conical filter 42 is out of contact with the sponge pad 62 and the sensor 63, and the sensor 63 is reset under the rebound action of the compression spring 64. At this time, the sensor 63 does not detect the pressure value, thereby controlling the dual-axis motor 6 to stop, and the output shaft 61 and the sponge pad 62 stop rotating synchronously, thereby realizing the automatic start and stop of the cleaning mechanism.

[0048] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A piston-type oil pump with a filtering function, comprising a pump body (1), characterized in that: It also includes a control component, a filter component, and a cleaning mechanism. An oil inlet pipe (11) and an oil outlet pipe (12) are respectively passed through the two sides of the pump body (1). A check valve (13) for controlling the flow direction of the oil is provided at the connection between the oil inlet pipe (11) and the oil outlet pipe (12) and the pump body (1). The control assembly includes an adjustment mechanism for realizing mode switching and a telescopic mechanism for cooperating with the filter assembly for disassembly and assembly. The adjustment mechanism includes a fixing seat (2) arranged on one side of the pump body (1); the telescopic mechanism is in transmission connection with the adjustment mechanism; The filter assembly comprises a sleeve (4) for assisting the inflow and outflow of oil and a worm (5) for controlling assembly and disassembly, and the sleeve (4) is fixedly connected to the telescopic mechanism.

2. The piston-type oil pump with filtering function according to claim 1, characterized in that: The interior of the fixing seat (2) is provided with a cavity 1 (21) and a cavity 2 (22) in sequence from top to bottom. A positioning groove (23) is provided on a side of the middle section of the top end of the fixing seat (2) away from the pump body (1). The positioning groove (23) is communicated with the cavity 1 (21). A positioning ring (24) is slidably connected to the middle section of the cavity 1 (21). A handle (29) is fixedly connected to the outer contour of the positioning ring (24). The handle (29) is slidably connected to the positioning groove (23). Both ends of the positioning groove (23) are provided with a locking pin (28) for positioning the handle (29). The locking pin (28) is connected to the fixing seat (2) through a pin shaft for damping rotation.

3. The piston-type oil pump with filtering function according to claim 2, characterized in that: A limiting groove (25) is provided in the middle section of the inner contour of the positioning ring (24), and guide grooves (26) are provided on both sides of the inner contour of the positioning ring (24). Both ends of the cavity (21) are connected to auxiliary rings (27) in a limiting sliding manner, and the end surface structure of the auxiliary ring (27) is consistent with that of the positioning ring (24).

4. The piston-type oil pump with filtering function according to claim 1, characterized in that: The telescopic mechanism includes a drive shaft (3) arranged in cavity 1 (21) and driven by a built-in motor, a middle section of the drive shaft (3) fixedly connected to a limit ring (31), the limit ring (31) limitedly rotatably connected to the limit groove (25), the drive shaft (3) is fixedly connected to a threaded portion (32) on the outer contours on both sides of the limit ring (31), the threads of the two threaded portions (32) are in opposite directions, the drive shaft (3) is sleeved with a screw barrel (33) on the outer contours on both sides of the limit ring (31), the two screw barrels (33) are threadedly connected to the drive shaft (3) through the threaded portions (32) at corresponding positions, the two sides of the outer contours of the two screw barrels (33) are fixedly connected to guide rods (34), and a plurality of guide rods (34) are limitedly slidably connected to the guide grooves (26) at corresponding positions.

5. The piston-type oil pump with filtering function according to claim 1, characterized in that: The sleeves (4) are provided with two and are respectively located on the side surfaces of both ends of the drive shaft (3); the inner contours of the two sleeves (4) are fixedly connected to one end close to the pump body (1) with a silicone sleeve (41); the middle sections of the inner contours of the two sleeves (4) are fixedly connected to a conical filter (42); one side of the outer contours of the two sleeves (4) are fixedly connected to a connecting block (43); the two sleeves (4) are fixedly connected to the corresponding position screw barrel (33) through the connecting block (43); the outer contours of the two sleeves (4) are fixedly connected to one end close to the pump body (1) with a fixing ring (44); the tops of the outer contours of the two sleeves (4) are fixedly connected to one end close to the fixing ring (44) with an upwardly extending bracket (45).

6. The piston-type oil pump with filtering function according to claim 1, characterized in that: The worm (5) is provided with two and is respectively located in the middle of the corresponding position bracket (45), and the axis of the two worms (5) is fixedly connected with an adjustment shaft (51) extending to both sides, and the two adjustment shafts (51) are both passed through and connected to the corresponding position bracket (45) in a limited rotation manner. The bottom ends of the two worms (5) are meshed and connected with a double-sided gear ring (52), and the two double-sided gear rings (52) are both limitedly connected to the corresponding position fixed ring (44) at one end close to the pump body (1). The inner contours of the double-sided gear rings (52) are meshed and connected to a plurality of spur gears (53), and the plurality of spur gears (53) are connected to the inner contour of the sleeve (4) near the pump body (1) through a fixed axis rotation of a pin shaft. The outer contour of each spur gear (53) is meshed and connected to a spur rack (54), and each spur rack (54) penetrates and is slidably connected to a fixed ring (44) at a corresponding position. The end of each spur rack (54) away from the fixed ring (44) is fixedly connected to a clamping plate (55).

7. The piston-type oil pump with filtering function according to claim 5, characterized in that: The two conical filter screens (42) are arranged in opposite directions and are directed from the pump body (1) to the oil inlet pipe (11) and the oil outlet pipe (12), respectively. The plurality of snap plates (55) are assembled together to form a ring-shaped structure.

8. The piston-type oil pump with filtering function according to claim 1, characterized in that: The cleaning mechanism comprises a dual-axis motor (6) arranged in the middle section of the second cavity (22), an output shaft (61) is provided at both ends of the dual-axis motor (6), the ends of the two output shafts (61) away from the dual-axis motor (6) are fixedly connected to sponge pads (62), the outer contours of the bottoms of the two sponge pads (62) are sleeved with sensors (63), the ends of the two sensors (63) away from the sponge pads (62) are fixedly connected to compression springs (64), and the ends of the two compression springs (64) away from the sensors (63) are fixedly connected to the outer contours of both sides of the fixing seat (2).

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