Adjustable oil suction filter

Abstract

The application discloses an adjustable oil suction filter, relates to the field of filters, and comprises an oil suction sliding base, an oil suction sliding cavity is formed in the oil suction sliding base, an oil suction sliding block is slidably connected in the oil suction sliding cavity, a filter cavity is formed in the oil suction sliding block, an oil suction filter element is installed in the filter cavity, a cover plate for closing the filter cavity is arranged on the oil suction sliding block, an oil suction opening is formed in the side of the cover plate away from the oil suction sliding block, an oil inlet hole is formed in the side wall of the oil suction sliding block, two adjusting holes are formed in the side wall of the oil suction sliding base along the length direction of the oil suction sliding base, a control assembly for controlling the sliding of the oil suction sliding block is arranged on the oil suction sliding base, and the oil inlet hole is in communication with different adjusting holes when the oil suction sliding block slides.

Description

Technical Field

[0001] This application relates to the field of filters, and more particularly to an adjustable oil suction filter. Background Technology

[0002] Currently, oil suction filters are installed at the oil pump suction port to protect the oil pump and other hydraulic components, preventing the intake of contaminants and effectively controlling hydraulic system contamination and adjusting the cleanliness of the hydraulic system.

[0003] Existing coal mining machines are crucial equipment in fully mechanized mining faces. During coal mine production, they must adapt to various complex working conditions. When mining at steep angles, the machine body is tilted. During downward mining, the machine body tilts towards the coal face. At this time, when the rocker arm of the coal mining machine rises and the oil level in the hydraulic tank decreases, if the oil suction filter in the tank is too short, the hydraulic pump may not be able to draw oil, causing the gear pump to cavitate. Similarly, during upward mining, the machine body tilts towards the goaf side. When the oil level in the hydraulic tank decreases, if the oil suction filter in the tank is too long, the hydraulic pump may also not be able to draw oil, causing the gear pump to cavitate, leading to hydraulic system failure and production delays. To address this issue, the inventors believe there is an urgent need for a hydraulic oil suction filter structure for coal mining machines that is suitable for steeply inclined coal seams and easily adjustable. This structure would allow the pump to draw oil normally during steep upward and downward mining, preventing system failures such as insufficient oil intake leading to height adjustment issues or pump damage, thereby reducing the failure rate of the coal mining machine's hydraulic system. Summary of the Invention

[0004] In order to meet the requirements of the hydraulic oil suction filter structure of the coal mining machine for steeply inclined coal seams and easy adjustment, so that the pump can still draw oil normally when mining at large angles of elevation and depression, reduce failures such as not being able to adjust the height or pump damage caused by not being able to draw oil, and reduce the failure rate of the hydraulic system of the coal mining machine, this application provides an adjustable oil suction filter.

[0005] The adjustable oil suction filter provided in this application adopts the following technical solution:

[0006] The device includes an oil-absorbing slide block, which has an oil-absorbing cavity inside. An oil-absorbing slider is slidably connected inside the oil-absorbing cavity. The oil-absorbing slider has a filter cavity inside, and an oil-absorbing filter element is installed inside the filter cavity. A cover plate for sealing the filter cavity is provided on the oil-absorbing slider. An oil suction port is provided on the side of the cover plate away from the oil-absorbing slider. An oil inlet is provided on the side wall of the oil-absorbing slider. Two adjustment holes are provided on the side wall of the oil-absorbing slide block along its length. A control component for controlling the sliding of the oil-absorbing slider is provided on the oil-absorbing slide block. When the oil-absorbing slider slides, the oil inlet is connected to the different adjustment holes.

[0007] By adopting the above technical solution, during downward mining, the oil in the hydraulic tank flows along the coal wall side, requiring an extended suction distance of the suction filter. The control component pushes the suction slider to the bottom of the suction cavity, connecting the inlet hole with the adjustment hole at the bottom, thus allowing for smoother hydraulic oil suction. During upward mining, the oil in the hydraulic tank flows along the goaf side, requiring a shortened suction distance of the filter. The control component pulls the suction slider to the top of the suction cavity, connecting the inlet hole with the adjustment hole at the top, thereby reducing the amount of air entering the filter cavity from the hydraulic tank. This better meets the requirements of a hydraulic suction filter structure for coal mining machines with steeply inclined coal seams and easy adjustment, ensuring that the pump can still suction oil normally during steep and downward mining, reducing malfunctions such as failure to adjust height or pump damage due to insufficient oil suction, and lowering the failure rate of the coal mining machine's hydraulic system.

[0008] Preferably, the control component includes an adjusting handle installed on the side of the oil suction slider away from the oil suction slide block. The inner wall of the oil suction cavity is provided with a limiting groove that slides and cooperates with the adjusting handle. The limiting groove consists of a guide groove and two locking grooves. The guide groove is opened along the depth direction of the oil suction cavity. The two locking grooves are opened on the side wall of the guide groove. When the adjusting handle slides into different locking grooves, the oil inlet hole is connected to different adjusting holes.

[0009] By adopting the above technical solution, the adjustment handle allows operators to more conveniently adjust the position of the oil suction slider, improving the ease of use of the oil suction slider; under the action of the limiting groove and the adjustment handle, the position of the oil suction slider can be limited, improving the ease of locking the position of the oil suction slider and improving the stability of using the oil suction filter.

[0010] Preferably, the bottom of the filter chamber is provided with a support seat that is inserted and engaged with the oil-absorbing filter element. The bottom of the filter chamber is provided with a support spring for pushing the support seat to press the oil-absorbing filter element. A limit ring is provided on the side of the cover plate near the oil-absorbing filter element. The limit ring is inserted and engaged with the oil-absorbing filter element. A plurality of pressing members are rotatably connected to the cover plate. The pressing members are composed of a pressing plate and a pressing plate. The oil-absorbing filter element is used to squeeze the pressing plate to move closer to the cover plate. After the pressing plate rotates, it simultaneously drives the pressing plate to abut against the inner wall of the oil-absorbing filter element.

[0011] By adopting the above technical solution, during installation, the oil suction filter element is inserted into the limiting ring, and at the same time, the pressing plate and the clamping plate are driven to abut against the oil suction filter element, thereby achieving the function of clamping the oil suction filter element. This makes the installation and disassembly of the oil suction filter element more convenient and improves the ease of use of the oil suction filter element. In addition, with the use of the support spring and support base, the two ends of the oil suction filter element can be better sealed, allowing the filter to work more smoothly and improving the ease of use of the oil suction filter.

[0012] Preferably, a fixing ring is fitted on the support base, and a clamping ring is provided on the inner side of the fixing ring for pressing against the inner wall of the oil suction filter element. The clamping ring is inclined outward in a direction away from the fixing ring. A pressing ring is provided at the end of the clamping ring away from the fixing ring for abutting against the support base. The pressing ring is inclined inward in a direction away from the clamping ring. A sealing sleeve is fitted on the side of the fixing ring away from the clamping ring.

[0013] By adopting the above technical solution, on the one hand, the clamping ring can be pressed against the outer wall of the support base, improving the stability during installation; on the other hand, when the fixing ring is removed from the support base, the inward bending design of the clamping ring can catch the grease adhering to the inner wall of the oil suction filter element, reducing the occurrence of grease dripping and improving the convenience of oil suction filter element disassembly; the sealing sleeve can better seal the bottom of the oil suction filter element with the support base, improving the performance of the oil suction filter element.

[0014] Preferably, the control component includes a sliding float slidably connected to the side wall of the oil-absorbing slide block, a floating block being provided on the sliding float, a rotating wheel being provided on the side of the sliding float away from the cover plate, a connecting rope connecting the floating block and the oil-absorbing slide block, the connecting rope passing around the rotating wheel for connection, the floating block being used to pull the oil-absorbing slide block closer to the bottom of the oil-absorbing cavity; an upward pressure spring being provided at the bottom of the oil-absorbing cavity, the upward pressure spring being used to push the oil-absorbing slide block to slide towards the top of the oil-absorbing cavity.

[0015] By adopting the above technical solution, when performing downward extraction, the oil suction distance of the oil suction filter is extended. Under the action of the buoyancy of the floating block, the sum of the buoyancy of the floating block and the weight of the oil suction slider is greater than the elastic force of the upward spring, which can pull the oil suction slider to move downward. When performing upward extraction, the oil suction distance of the filter is shortened. Under the action of the upward pressure spring, the elastic force of the upward spring and the weight of the oil suction slider work together to make the oil suction slider move towards the top of the oil suction cavity. This allows the oil suction slider to move more conveniently and improves the convenience of adjusting the oil suction filter.

[0016] Preferably, the sidewall of the oil suction slider is provided with a male magnetic block, and the sidewall of the oil suction cavity is provided with two female magnetic blocks. The male magnetic block and the female magnetic blocks attract each other. When the male magnetic block corresponds to the female magnetic block, the oil inlet hole is connected to the adjustment hole.

[0017] By adopting the above technical solution, when the oil suction slider is at different positions in the oil suction cavity, the male and female magnetic blocks attract each other, which can make the oil suction slider more stable and reduce the impact of the shaking of the coal mining machine on the position of the oil suction slider during use, improve the stability of the connection between the oil inlet and the regulating hole, and improve the convenience of using the oil suction filter.

[0018] Preferably, the side wall of the oil suction cavity is provided with a connecting ring groove, which is located between the adjustment hole at the top and the opening of the oil suction cavity. A sealing ring is provided on the connecting ring groove, and one end of the sealing ring away from the side wall of the oil suction cavity is fixed to the side wall of the oil suction slider.

[0019] By adopting the above technical solution, when the oil suction slider slides to the bottom of the oil suction cavity, the sealing ring can seal the adjustment hole located at the top. At this time, the sealing ring can be tightened, thereby reducing the deformation of the sealing ring and improving the effect of the sealing ring. When the oil suction slider slides to the top, the sealing ring is located between the oil suction slider and the inner wall of the oil suction cavity, thereby better achieving the function of sealing the oil suction cavity and improving the stability of the oil suction filter.

[0020] Preferably, the sidewall of the adjustment hole is provided with a switch slide cavity, and a switch slide plate for closing the adjustment hole is slidably connected in the switch slide cavity. The sidewall of the oil suction slide cavity is provided with a sliding groove along its length direction, and the sliding groove also passes through the switch slide plate. The sidewall of the oil suction slide plate is provided with a switch slider, and the switch slider is slidably connected in the sliding groove. When the switch slider is located on the switch slide plate, the oil suction slide plate rotates and drives the switch slide plate to slide into the switch slide cavity.

[0021] By adopting the above technical solution, during use, the position of the oil suction slider can be moved by adjusting the handle. When the adjusting handle slides into the locking groove, it simultaneously drives the switch slide plate into the switch cavity. This achieves the purpose of connecting the oil inlet hole and the adjusting hole. When the position of the adjusting handle is moved, the adjusting hole can be closed by the switch slide plate, improving the convenience of closing the adjusting hole.

[0022] Preferably, the switch slider has a telescopic groove on the side wall of the sliding groove, and a telescopic rod is slidably connected in the telescopic groove. A positioning block is provided on the telescopic rod. Two positioning grooves are provided on the side wall of the switch slide plate. The two positioning grooves are respectively opened through the side wall of the switch slide plate. The positioning grooves are used to push the positioning block to move closer to the switch slide plate. A positioning hole is provided on the side wall of the adjustment hole to engage with the telescopic rod. A telescopic compression spring is provided in the telescopic groove to push the telescopic rod to move closer to the positioning hole.

[0023] By adopting the above technical solution, when the switch slider is inserted into the sliding groove on the switch slide plate, the positioning block is pushed to retract through the positioning groove, and then the switch slide plate is rotated, so that the adjustment hole can be opened more conveniently; when the switch slider is disengaged from the sliding groove, the telescopic rod is inserted into the positioning hole, so as to limit the switch slide plate and improve the stability of the switch slide plate.

[0024] Preferably, guide grooves are provided on both sides of the adjustment hole, and guide plates that slide and cooperate with the guide grooves are provided on both sides of the switch slide plate. A sealing strip is provided on the side of the guide plate away from the switch slide plate.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. During downward mining, the hydraulic oil in the tank flows along the coal face, requiring an extended suction distance for the suction filter. The control component pushes the suction slider towards the bottom of the suction cavity, connecting the inlet hole with the bottom adjustment hole, thus allowing for smoother hydraulic oil suction. During upward mining, the hydraulic oil in the tank flows along the goaf side, requiring a shortened suction distance for the filter. The control component pulls the suction slider towards the top of the suction cavity, connecting the inlet hole with the top adjustment hole, thus reducing air entering the filter cavity from the hydraulic tank. This design better meets the requirements of a hydraulic suction filter structure for coal mining machines with steeply inclined coal seams and easy adjustment, ensuring the pump can still suction oil normally during steep and downward mining, reducing malfunctions such as insufficient oil intake causing height adjustment issues or pump damage, and lowering the failure rate of the coal mining machine's hydraulic system.

[0027] 2. During installation, insert the suction filter element onto the limiting ring, and simultaneously drive the pressing plate to engage the clamping plate against the suction filter element, thereby clamping the suction filter element. This makes the installation and removal of the suction filter element more convenient and improves its ease of use. Furthermore, the use of the support spring and support base can better seal both ends of the suction filter element, allowing the filter to work more smoothly and further enhancing the ease of use of the suction filter.

[0028] 3. When performing downward extraction, extending the oil suction distance of the oil suction filter, under the action of the buoyancy of the float block, the sum of the buoyancy of the float block and the weight of the oil suction slider is greater than the elastic force of the upward spring, which can pull the oil suction slider downward; when performing upward extraction, shortening the oil suction distance of the filter, under the action of the upward pressure spring, the elastic force of the upward spring and the weight of the oil suction slider work together to make the oil suction slider move towards the top of the oil suction cavity, thereby making the oil suction slider more convenient to move and improving the convenience of adjusting the oil suction filter;

[0029] 4. The position of the oil suction slider can be moved by adjusting the handle. When the adjusting handle slides into the locking groove, it simultaneously drives the switch slide plate into the switch cavity. This achieves the purpose of connecting the oil inlet hole and the adjusting hole. When the position of the adjusting handle is moved, the adjusting hole can be closed by the switch slide plate, improving the convenience of closing the adjusting hole. In use, when the switch slider is inserted into the sliding groove on the switch slide plate, the positioning groove pushes the positioning block to retract, and then the switch slide plate rotates, thus making it easier to open the adjusting hole. When the switch slider is disengaged from the sliding groove, the telescopic rod is inserted into the positioning hole, thereby limiting the switch slide plate and improving the stability of the switch slide plate. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of an adjustable oil suction filter according to Embodiment 1 of this application;

[0031] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0032] Figure 3 This is a diagram illustrating the fixing ring and its connection structure, which is the main feature of Embodiment 1 of this application.

[0033] Figure 4 This is a partial schematic diagram of Embodiment 1 of this application, which mainly illustrates the limiting slide structure;

[0034] Figure 5 This is a cross-sectional view of an adjustable oil suction filter according to Embodiment 2 of this application;

[0035] Figure 6 This is a partial schematic diagram of Embodiment 3 of this application, mainly illustrating the structure of the switch cavity and the switch slide plate;

[0036] Reference numerals: 1. Oil suction cavity; 2. Support spring; 3. Oil suction slider; 4. Filter cavity; 5. Clamping component; 6. Limiting groove; 61. Guide groove; 62. Locking groove; 7. Adjusting handle; 8. Oil suction slide; 9. Adjusting hole; 10. Support base; 11. Fixing ring; 12. Oil inlet; 13. Oil suction filter element; 14. Limiting ring; 15. Cover plate; 16. Oil extraction port; 17. Pressing plate; 18. Clamping plate; 19. Sealing sleeve; 20. Pressing element 21. Ring; 22. Compression ring; 23. Connecting ring groove; 24. Connecting rope; 25. Sliding float; 26. Floating block; 27. Upward compression spring; 28. Male magnetic block; 29. ​​Female magnetic block; 30. Guide plate; 31. Positioning block; 32. Telescopic compression spring; 33. Guide groove; 34. Switch slide cavity; 35. Positioning slide groove; 36. Sliding groove; 37. Positioning hole; 38. Telescopic rod; 39. Telescopic groove; 40. Switch slide plate; 41. Switch slider; 42. Sealing ring. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 - Figure 6 This application will be described in further detail.

[0038] This application discloses an adjustable oil suction filter.

[0039] Example 1

[0040] Reference Figure 1 An adjustable oil suction filter includes an oil suction slide 8, which is bolted to a hydraulic oil tank. The oil suction slide 8 is cylindrical and has an oil suction cavity 1 inside. The bottom of the oil suction cavity 1 has a through-hole. An oil suction slider 3, which is cylindrical, is slidably connected inside the oil suction cavity 1. The oil suction slider 3 has a filter cavity 4 inside and an oil suction filter element 13 for filtering hydraulic oil is installed inside the filter cavity 4. The oil suction slider 3 is equipped with a cover plate 15 for sealing the filter chamber 4. An oil extraction port 16 is provided on the side of the cover plate 15 away from the oil suction slider 3. An oil inlet hole 12 is provided on the side wall of the oil suction slider 3. Oil flows through the oil inlet hole 12, through the oil suction filter element 13, and then out through the oil extraction port 16, thus achieving the function of filtering the oil. Two adjustment holes 9 are provided along the length of the side wall of the oil suction slide 8. The adjustment holes 9 are rectangular holes, and are located near both ends of the oil suction slider 3. A control component is installed on the oil suction slide 8 to control the sliding of the oil suction slider 3. This control component allows for more convenient adjustment of the position of the oil suction slider 3 according to the operating conditions. When the oil suction slider 3 slides, the oil inlet hole 12 connects with the different adjustment holes 9, thereby better meeting the needs of both downward and upward oil extraction. The control component pulls the oil suction slider 3 to the top of the oil suction cavity 1, so that the oil inlet hole 12 is connected to the top adjustment hole 9. This reduces the amount of air entering the filter cavity 4 from the hydraulic oil tank, better meeting the requirements of the hydraulic oil suction filter structure of the coal mining machine for large-angle coal seams and easy adjustment. It also enables the pump to draw oil normally when mining at large angles, reducing failures such as not being able to adjust the height or pump damage caused by not being able to draw oil, and lowering the failure rate of the coal mining machine hydraulic system.

[0041] The control components include an adjustment handle 7 installed on the side of the oil suction slider 3 away from the oil suction slide block 8. The adjustment handle 7 is bolted to the cover plate 15. The operator can more conveniently adjust the position of the oil suction slider 3 by rotating the adjustment handle 7. The inner wall of the oil suction cavity 1 is provided with a limiting slide groove 6 that slides and cooperates with the adjustment handle 7. The limiting slide groove 6 consists of a guide slide groove 61 and two locking slide grooves 62. The guide slide groove 61 is opened along the depth direction of the oil suction cavity 1. The two locking slide grooves 62 are opened on the side wall of the guide slide groove 61. When the adjustment handle 7 slides into the locking slide groove 62, it can not only limit the oil suction slider 3, but also connect the oil inlet hole 12 to two different adjustment holes 9 respectively, improving the convenience of controlling the oil suction slider 3.

[0042] A support base 10 is installed at the bottom of the filter chamber 4, which is inserted into the oil suction filter element 13. The support base 10 has a T-shaped cross-section. A support spring 2 is fixed at the bottom of the filter chamber 4 to push the support base 10 to press the oil suction filter element 13. Through the cooperation of the support spring 2 and the support base 10, the bottom of the oil suction filter element 13 can be better sealed, improving the sealing and filtration effect of the oil suction filter element 13. A limit ring 14 is fixed on the side of the cover plate 15 near the oil suction filter element 13. The limit ring 14 is inserted into the oil suction filter element 13, and the inner wall of the limit ring 14 can be better sealed through a sealing ring. Several pressing parts 5 are rotatably connected to the cover plate 15. The pressing parts 5 are integrally composed of pressing plates 18 and pressing plates 17. The pressing plates 18 and pressing plates 17 are set perpendicularly. The oil suction filter element 13 is used to squeeze the pressing plates 17 to move closer to the cover plate 15. After the pressing plates 17 move, they simultaneously drive the pressing plates 18 to abut against the inner wall of the oil suction filter element 13. This achieves the function of clamping the oil suction filter element 13, which not only makes the installation and disassembly of the oil suction filter element 13 more convenient, but also reduces the movement of the oil suction filter element 13 and improves the stability of using the oil suction filter element 13.

[0043] A fixing ring 11 is fitted onto the support base 10. An abutment ring 20 is integrally formed on the inner side of the fixing ring 11 to press against the inner wall of the oil suction filter element 13. The abutment ring 20 is inclined outwards in the direction away from the fixing ring 11. The abutment ring 20 can better press against the oil suction filter element 13, improving the stability of the fixing ring 11 connected to the oil suction filter element 13. A clamping ring 21 is integrally formed at the end of the clamping ring 20 away from the fixing ring 11 to abut against the support base 10. The clamping ring 21 is inclined inwards in the direction away from the abutment ring 20. This allows the clamping ring 21 to press against the outer wall of the support base 10, improving stability during installation. Furthermore, when the fixing ring 11 is removed from the support base 10, the inward bending design of the clamping ring 21 can catch the grease adhering to the inner wall of the oil suction filter element 13, reducing grease dripping and improving the ease of disassembly of the oil suction filter element 13. A sealing sleeve 19 is fitted on the side of the fixing ring 11 away from the abutment ring. The sealing sleeve 19 can better seal the bottom of the oil suction filter element 13 and the support seat 10, thereby improving the performance of the oil suction filter element 13.

[0044] The implementation principle of an adjustable oil suction filter in this application embodiment is as follows: During overhead mining, the oil in the hydraulic oil tank flows along the coal wall side, requiring an extended oil suction distance for the oil suction filter. The adjusting handle 7 pushes the oil suction slider 3 towards the bottom of the oil suction cavity 1, and slides the adjusting handle 7 into the locking groove 62, connecting the oil inlet hole 12 with the bottom adjusting hole 9, thus allowing for smoother hydraulic oil suction. During overhead mining, the oil in the hydraulic oil tank flows along the goaf side, requiring a shortened oil suction distance for the filter. The adjusting handle 7 pulls the oil suction slider 3 towards the top of the oil suction cavity 1, connecting the oil inlet hole 12 with the top adjusting hole 9, thereby reducing the amount of air entering the filter cavity 4 from the hydraulic oil tank. This design better meets the needs of large-angle coal seams and provides a conveniently adjustable hydraulic oil suction filter structure for coal mining machines. It ensures the pump can still draw oil normally during large-angle overhead mining, reducing malfunctions such as insufficient oil intake leading to pump failure or damage, and lowering the failure rate of the coal mining machine's hydraulic system.

[0045] Example 2

[0046] Reference Figure 5 The difference between this embodiment and Embodiment 1 is that the control component includes a sliding float 24 slidably connected to the side wall of the oil suction slide 8. A limiting ring is fixed to the side wall of the oil suction slide 8 to restrict the sliding position of the sliding float 24. A float block 25 is installed on the sliding float 24. The float block 25 is made of a low-density rubber material. A rotating wheel is installed on the side of the sliding float 24 away from the cover plate 15. A connecting rope 23 connects the float block 25 and the oil suction slider 3, and the connecting rope 23 passes around the rotating wheel. The float block 25 is used to pull the oil suction slider 3 closer to the bottom of the oil suction cavity 1 for sliding. An upward pressure spring 26 is fixed to the bottom of the oil suction cavity 1. The upward pressure spring 26 is used to push the oil suction slider 3 to move towards the top of the oil suction cavity 1, thereby achieving automatic control of the oil suction slider 3 and improving the convenience of using the oil suction filter.

[0047] A male magnetic block 27 is fixed to the side wall of the oil suction slider 3, and two female magnetic blocks 28 are fixed to the side wall of the oil suction cavity 1. The male magnetic block 27 and the female magnetic blocks 28 attract each other. When the male magnetic block 27 and the female magnetic blocks 28 are aligned, the oil inlet hole 12 is connected to the adjustment hole 9. When the oil suction slider 3 is in different positions in the oil suction cavity 1, the mutual attraction between the male magnetic block 27 and the female magnetic blocks 28 can make the oil suction slider 3 more stably fixed, reduce the impact of the shaking of the coal mining machine on the position of the oil suction slider 3 during use, improve the stability of the connection between the oil inlet hole 12 and the adjustment hole 9, and improve the convenience of using the oil suction filter.

[0048] A connecting ring groove 22 is provided on the side wall of the oil suction cavity 1. The connecting ring groove 22 is located between the top adjustment hole 9 and the opening of the oil suction cavity 1. A sealing ring 41 is fixed on the connecting ring groove 22. The sealing ring 41 is made of soft rubber material, and the end of the sealing ring 41 away from the side wall of the oil suction cavity 1 is fixed to the side wall of the oil suction slider 3. Through the connection of the sealing ring 41, the oil suction cavity 1 can be sealed, improving the stability of the oil suction filter. When the oil suction slider 3 slides to the bottom of the oil suction cavity 1, the sealing ring 41 can close the adjustment hole 9 located at the top, and at this time, the sealing ring 41 can be tightened, thereby better reducing the deformation of the sealing ring 41 and improving the effectiveness of the sealing ring 41. When the oil suction slider 3 slides to the top, the sealing ring 41 is located between the oil suction slider 3 and the inner wall of the oil suction cavity 1, thereby better achieving the function of sealing the oil suction cavity 1 and improving the stability of the oil suction filter.

[0049] The implementation principle of Example 2 is as follows: During operation, the difference from Example 1 is that when performing downward extraction, the oil suction distance of the oil suction filter is extended. Under the action of the buoyancy of the float block 25, the sum of the buoyancy of the float block 25 and the weight of the oil suction slider 3 is greater than the elastic force of the upper moving spring 26, which can pull the oil suction slider 3 to move downward. When performing upward extraction, the oil suction distance of the filter is shortened. Under the action of the upper moving spring 26, the elastic force of the upper moving spring 26, combined with the weight of the oil suction slider 3, makes the oil suction slider 3 move towards the top of the oil suction cavity 1, thereby making the oil suction slider 3 more convenient to move and improving the convenience of adjusting the oil suction filter.

[0050] Example 3

[0051] Reference Figure 6 The difference between this embodiment and Embodiment 1 is that a switch slide cavity 33 is provided on the side wall of the adjustment hole 9. The switch slide cavity 33 is a rectangular cavity, and a switch slide plate 39 for closing the adjustment hole 9 is slidably connected inside the switch slide cavity 33. A sliding groove 35 is provided on the side wall of the oil suction slide cavity 1 along its length direction, and the sliding groove 35 is also provided through the switch slide plate 39. A switch slider 40 is fixed on the side wall of the oil suction slider 3 and is connected in the sliding groove 35. When the switch slider 40 is located on the switch slide plate 39, the oil suction slider 3 rotates and drives the switch slide plate 39 to slide into the switch slide cavity 33. Thus, the position of the oil suction slider 3 can be moved by the adjustment handle 7. When the adjustment handle 7 slides into the locking groove 62, it simultaneously drives the switch slide plate 39 to slide into the switch slide cavity 33. This achieves the purpose of connecting the oil inlet hole 12 and the adjustment hole 9. When the position of the adjustment handle 7 is moved, the adjustment hole 9 can be closed by the switch slide plate 39, improving the convenience of closing the adjustment hole 9.

[0052] The switch slide plate 39 has a telescopic groove 38 on the side wall of the sliding groove 35. A telescopic rod 37 is slidably connected in the telescopic groove 38, and a positioning block 30 is fixed on the telescopic rod 37. The switch slider 40 has two positioning grooves 34 on its side wall, which are respectively opened through the two side walls of the switch slide plate 39. The positioning grooves 34 are used to push the positioning block 30 to move closer to the switch slide plate 39. The side wall of the adjustment hole 9 has a positioning hole 36 that is inserted and matched with the telescopic rod 37. A telescopic compression spring 31 is provided in the telescopic groove 38 to push the telescopic rod 37 to move closer to the positioning hole 36. Guide grooves 32 are opened on both sides of the adjustment hole 9, which are opened through the side wall of the switch slide cavity 33. Guide plates 29 are integrally formed on both sides of the switch slide plate 39 and slide in the guide grooves 32. A sealing strip is fixed on the side of the guide plate 29 away from the switch slide plate 39. The sealing strip can better improve the sealing performance of the switch slide plate 39.

[0053] The implementation principle of Example 2 is as follows: During operation, the difference from Example 1 is that the switch slide plate 39 controls the opening and closing of the adjustment hole 9, which improves the convenience of using the oil suction filter. In addition, the telescopic rod 37 and the positioning hole 36 can better limit the switch slide plate 39 and improve the stability of the switch slide plate 39.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adjustable oil absorption filter characterized by: The utility model provides an oil absorption slide (8) is included in the oil absorption slide (8) is seted up the oil absorption slide cavity (1), the oil absorption slide block (3) is connected in the oil absorption slide cavity (1) slip, the filter cavity (4) is seted up in the oil absorption slide block (3), the oil absorption filter core (13) is installed in the filter cavity (4), the cover plate (15) for closing the filter cavity (4) is seted up on the oil absorption slide block (3), the cover plate (15) is seted up the oil extraction port (16) on the side away from the oil absorption slide block (3), the oil inlet hole (12) is seted up in the oil absorption slide block (3) side wall, and the oil liquid flows from the oil inlet hole (12) through the oil absorption filter core (13) and then flows out from the oil extraction port (16), two adjusting holes (9) are seted up in the oil absorption slide cavity (1) side wall along its length direction, and the control assembly for controlling the sliding of the oil absorption slide block (3) is seted up on the oil absorption slide (8). The control assembly includes an adjusting handle (7) mounted on the side of the oil absorption slide block (3) away from the oil absorption slide (8), a limiting sliding groove (6) is formed in the inner wall of the oil absorption slide cavity (1) and slidably connected with the adjusting handle (7), the limiting sliding groove (6) is composed of a guide sliding groove (61) and two locking sliding grooves (62), the guide sliding groove (61) is formed along the depth direction of the oil absorption slide cavity (1), and the two locking sliding grooves (62) are formed in the side wall of the guide sliding groove (61), when the adjusting handle (7) is slid into different locking sliding grooves (62), the oil inlet hole (12) is connected with different adjusting holes (9). Or the control assembly includes a sliding floating seat (24) slidably connected to the side wall of the oil absorption slide (8), a floating block (25) is arranged on the sliding floating seat (24), a rotating wheel is arranged on the side of the sliding floating seat (24) away from the cover plate (15), a connecting rope (23) is connected between the floating block (25) and the oil absorption slide block (3), the connecting rope (23) is connected around the rotating wheel, the floating block (25) is used for pulling the oil absorption slide block (3) to slide close to the bottom of the oil absorption slide cavity (1), an upward compression spring (26) is arranged at the bottom of the oil absorption slide cavity (1), the upward compression spring (26) is used for pushing the oil absorption slide block (3) to slide to the top of the oil absorption slide cavity (1), when the oil absorption slide block (3) slides, the oil inlet hole (12) is connected with different adjusting holes (9).

2. An adjustable oil absorption filter according to claim 1, characterized in that: The bottom of the filter cavity (4) is provided with a support seat (10) matched with the oil absorption filter element (13), the bottom of the filter cavity (4) is provided with a support compression spring (2) for pushing the support seat (10) to compress the oil absorption filter element (13), the side of the cover plate (15) close to the oil absorption filter element (13) is provided with a limiting ring (14), the limiting ring (14) is matched with the oil absorption filter element (13), a plurality of compression pieces (5) are rotatably connected on the cover plate (15), the compression piece (5) is integrally composed of a compression sheet (18) and a pressing sheet (17), the oil absorption filter element (13) is used for extruding the pressing sheet (17) to move close to the cover plate (15), the pressing sheet (17) rotates and simultaneously drives the compression sheet (18) to abut on the inner wall of the oil absorption filter element (13).

3. An adjustable oil absorption filter according to claim 2, wherein: The support seat (10) is sleeved with a fixing ring (11), the inner side of the fixing ring (11) is provided with an abutting ring (20) for abutting against the inner wall of the oil absorption filter element (13), the abutting ring (20) is inclined outwardly away from the fixing ring (11), one end of the abutting ring (20) away from the fixing ring (11) is provided with a compression ring (21) for abutting against the support seat (10), the compression ring (21) is inclined inwardly away from the abutting ring (20), and the side of the fixing ring (11) away from the abutting ring (20) is sleeved with a sealing sleeve (19).

4. An adjustable oil absorption filter according to claim 1, wherein: The side wall of the oil absorption sliding block (3) is provided with a male magnetic block (27), the side wall of the oil absorption sliding cavity (1) is provided with two female magnetic blocks (28), the male magnetic block (27) and the female magnetic block (28) are attracted to each other, and the male magnetic block (27) corresponds to the female magnetic block (28), so that the oil inlet hole (12) and the adjusting hole (9) are communicated.

5. An adjustable oil absorption filter according to claim 4, wherein: The side wall of the oil absorption sliding cavity (1) is provided with a connecting ring groove (22), the connecting ring groove (22) is arranged between the adjusting hole (9) at the top and the opening of the oil absorption sliding cavity (1), and the connecting ring groove (22) is provided with a sealing ring (41), one end of the sealing ring (41) away from the side wall of the oil absorption sliding cavity (1) is fixed on the side wall of the oil absorption sliding block (3).

6. An adjustable oil absorption filter according to claim 1, wherein: The side wall of the adjusting hole (9) is provided with a switch sliding cavity (33), a switch sliding plate (39) for closing the adjusting hole (9) is slidably connected in the switch sliding cavity (33), the side wall of the oil absorption sliding cavity (1) is provided with a sliding groove (35) along the length direction, the sliding groove (35) penetrates through the switch sliding plate (39), the side wall of the oil absorption sliding block (3) is provided with a switch sliding block (40), the switch sliding block (40) is slidably connected in the sliding groove (35), and when the switch sliding block (40) is located on the switch sliding plate (39), the oil absorption sliding block (3) rotates and drives the switch sliding plate (39) to slide into the switch sliding cavity (33).

7. An adjustable oil strainer according to claim 6, wherein: The switch sliding plate (39) is provided with an expansion slot (38) on the side wall of the sliding groove (35), the expansion slot (38) is slidably connected with an expansion rod (37), the expansion rod (37) is provided with a positioning block (30), the switch sliding block (40) is provided with two positioning sliding grooves (34) on the side wall, the two positioning sliding grooves (34) are respectively provided on the two side walls of the switch sliding block (40), the positioning sliding groove (34) is used for pushing the positioning block (30) to move close to the switch sliding plate (39), the adjusting hole (9) is provided with a positioning hole (36) matched with the expansion rod (37), the expansion slot (38) is provided with an expansion compression spring (31) used for pushing the expansion rod (37) to move close to the positioning hole (36).

8. An adjustable oil suction filter according to claim 7, characterized in that: The adjusting hole (9) is provided with a guide slot (32) on both sides, the guide slot (32) is provided on the side wall of the switch sliding cavity (33), the switch sliding plate (39) is provided with a guide piece (29) slidably matched with the guide slot (32) on both sides, the guide piece (29) is provided with a sealing strip away from the switch sliding plate (39).

Images