A low-frequency noise reduction interconnected oil filter unit and its use method

Abstract

The present invention discloses a low-frequency noise reduction interconnected oil filter unit and a method for using the same, comprising a machine body, wherein an oil tank, a coarse filter tank and a fine filter tank are arranged inside the machine body; a primary filter device is arranged at the top of the oil tank, and the primary filter device comprises: a filter barrel, wherein a plurality of filter barrels are fixedly connected to the top of the oil tank; a connecting mechanism, wherein the connecting mechanism is arranged above the plurality of filter barrels; a barrel cover, wherein the barrel cover is slidably interlaced with the inner cavity of the filter barrel; an installation mechanism, wherein the installation mechanism is arranged at the top of the plurality of filter barrels and is used to position the barrel cover; and a filtering mechanism, wherein the filtering mechanism is connected to the barrel cover and is used to perform a primary filtration on the oil. The present invention utilizes a setting method in which the filter barrel, the connecting mechanism, the barrel cover, the installation mechanism and the filtering mechanism are coordinated, and utilizes a three-way pipe to simultaneously enable two filter barrels to perform a primary filtration on the oil with impurities, and can clean the filter plate without stopping the machine, thereby saving the user's time and improving the oil filtering efficiency of the oil filter.

Description

Technical Field

[0001] The present invention relates to the technical field related to oil filters, and in particular to a low-frequency noise reduction interconnected oil filter unit and a method for using the same. Background Art

[0002] Oil filter is a filtering device that uses gravity, centrifugal, pressure, vacuum distillation, mass transfer and other technical methods to remove mechanical impurities, oxidation byproducts and water from impure oil. Oil filter is mainly used to improve the cleanliness of oil used in machinery and electrical appliances, so that it can play the best performance and extend the service life of the equipment.

[0003] The oil filter is used to filter smaller impurities in the oil. Before the oil enters the coarse filter device in the oil filter, it is necessary to filter the oil through the filter to filter out larger impurities in the oil, thereby reducing the workload of the coarse filter device and the fine filter device in the oil filter. If the filter is not cleaned for a long time, the filtering efficiency of the filter will be reduced. However, the filter is generally set inside the oil filter, which makes it too troublesome to clean the filter. Every time the machine needs to be shut down, the user needs to remove the filter, which not only wastes the user's time, but also affects the oil filtering efficiency of the oil filter. Summary of the invention

[0004] The object of the present invention is to provide a low-frequency noise reduction interconnected oil filter unit and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a low-frequency noise reduction interconnected oil filter unit, comprising a body, wherein an oil tank, a coarse filter tank and a fine filter tank are arranged inside the body;

[0006] A primary filter device is provided at the top of the oil tank, and the primary filter device comprises:

[0007] A filter barrel, wherein a plurality of filter barrels are fixedly connected to the top of the oil tank;

[0008] A connecting mechanism, which is arranged above the plurality of filter barrels and is used to guide the flow direction of the oil;

[0009] A barrel cover, the barrel cover is slidably and interlacedly connected with the inner cavity of the filter barrel;

[0010] A mounting mechanism, which is disposed at the top of the plurality of filter barrels and is used to position the barrel covers;

[0011] The filtering mechanism is connected to the barrel cover and is used for primary filtering of the oil.

[0012] Preferably, the communication mechanism comprises:

[0013] An oil inlet pipe, the oil inlet pipe is fixedly inserted and connected to the top of the machine body;

[0014] A tee pipe, the tee pipe is fixedly connected to the bottom end of the oil inlet pipe;

[0015] A valve stem, the valve stem is rotatably inserted and connected to the outside of the three-way pipe;

[0016] L-shaped tubes, one end of each of the L-shaped tubes is fixedly connected to the three-way tube, and the other end of each of the L-shaped tubes is slidably connected to the barrel cover;

[0017] A worm, the worm is rotatably arranged inside the body, and the worm cooperates with the mounting mechanism;

[0018] A synchronization component, wherein the synchronization component is arranged between the valve stem and the worm;

[0019] A positioning assembly is connected to the worm and is used for fixing the worm at multiple points.

[0020] Preferably, the synchronization component includes:

[0021] Synchronous wheels, a plurality of which are respectively fixedly interlaced with the valve stem and the worm;

[0022] A synchronous belt is arranged between a plurality of synchronous wheels.

[0023] Preferably, the positioning component comprises:

[0024] A turntable, the outer wall of the body is provided with a groove, the turntable is located inside the groove, the turntable is fixedly connected to one end of the worm, a through groove is provided in the middle of the turntable, and a pull groove is provided on the outer wall of the turntable;

[0025] Positioning rods, the inner wall of the groove is equidistantly provided with a plurality of positioning holes, one end of each of the plurality of positioning rods is slidably interlaced with the inner cavity of the through groove, and the other ends of each of the plurality of positioning rods are slidably interlaced with the inner cavities of the plurality of positioning holes;

[0026] Pull rods, wherein the plurality of pull rods are respectively fixedly connected to the plurality of positioning rods, and the plurality of pull rods are all slidably and interlacedly connected to the inner cavity of the pull groove;

[0027] A first compression spring is located inside the through slot, and two ends of the first compression spring are respectively fixedly connected to a plurality of positioning rods.

[0028] Preferably, the mounting mechanism comprises:

[0029] Mounting rods, wherein a plurality of the mounting rods are fixedly connected to the bottom end of the barrel cover, a plurality of mounting holes are opened at the top end of the filter barrel, and the mounting rods are slidably interlaced with the inner cavities of the mounting holes;

[0030] A worm wheel, wherein the plurality of worm wheels are respectively sleeved on the outside of the plurality of filter barrels, and the plurality of worm wheels are meshedly connected with the worm;

[0031] A clamping rod, wherein the clamping rods are fixedly connected to the inner wall of the worm wheel, the outer wall of the filter barrel is provided with a plurality of slide grooves in communication with the mounting hole at equal intervals, the clamping rods are respectively connected to the inner cavities of the plurality of slide grooves by sliding and inserting, the middle parts of the plurality of mounting rods are provided with a clamping hole, and the clamping rods are connected to the inner cavities of the clamping holes by sliding and inserting;

[0032] A lifting assembly is arranged on the outside of the barrel cover.

[0033] Preferably, the lifting assembly comprises:

[0034] A slide cylinder, the slide cylinder is fixedly connected to the top of the barrel cover, and the slide cylinder is sleeved on the outside of the L-shaped tube;

[0035] Sliding blocks, wherein a plurality of the sliding blocks are respectively fixedly connected to the two sides of the inner wall of the slide tube, and the outer wall of the L-shaped tube is provided with a sliding groove, and the sliding blocks are slidably interlaced with the inner cavity of the sliding groove, and the cross-sections of the sliding blocks and the sliding groove are both T-shaped;

[0036] A fixing frame, wherein a plurality of the fixing frames are respectively fixedly connected to two sides of the outer wall of the slide tube;

[0037] A hook, wherein the plurality of hooks are rotatably connected to the plurality of fixing frames respectively, and the outer wall of the L-shaped tube is provided with a plurality of slots, and the inner cavities of the hooks and the slots cooperate with each other;

[0038] Second compression springs, one end of each of the second compression springs is fixedly connected to the outer wall of the slide tube, and the other ends of each of the second compression springs are fixedly connected to the plurality of hooks.

[0039] Preferably, the filtering mechanism comprises:

[0040] A filter plate, the filter plate is slidably and interlacedly connected with the inner cavity of the filter barrel;

[0041] Limit rods, one end of each of the limit rods is fixedly connected to the inner wall of the filter barrel, and the other end of each of the limit rods is slidably connected to the filter plate;

[0042] A plurality of mounting rings are fixedly connected to the side of the barrel cover opposite to the filter plate at equal distances;

[0043] A plurality of tension springs are respectively arranged between a plurality of mounting rings.

[0044] Preferably, the outer wall of the machine body and the filter barrel are both embedded with observation windows, and the observation windows are made of transparent material.

[0045] Preferably, connecting pipes are provided between the oil tank, the coarse filter tank and the fine filter tank, and an oil pump is provided on the connecting pipes.

[0046] The present invention also provides a method for using a low-frequency noise reduction interconnected oil filter unit, comprising the following specific steps:

[0047] Step 1: When the indicator arrow on the turntable points upward, oil containing impurities flows through both L-shaped tubes and is transported to the interior of their respective filter barrels for initial filtration. After a period of use, the position of the filter plate can be observed through the observation window. When the filter plate is clogged by the filtered impurities, the weight of the filter plate and the unfiltered oil will gradually lengthen the tension spring, so that any filter plate can be selected for cleaning at the appropriate time.

[0048] Step 2: When one of the filter plates needs to be cleaned, the pull rod can be pulled to drive the positioning rod to disengage from the positioning hole, thereby driving the turntable to rotate 90 degrees, so that the indicator arrow on the turntable points to the filter barrel that still needs to flow, and the pull rod is released, so that the positioning rod can be inserted into the positioning hole at the current position under the elastic force of the first compression spring, thereby achieving positioning;

[0049] Step 3: When the turntable is turned, the worm rotates accordingly, so that one of the worm wheels rotates clockwise to release the clamping of the installation rod, while the other worm wheel drives the clamping rod to rotate clockwise to continue to keep the clamping of the installation rod. At the same time, the valve stem can also be driven to rotate through the synchronous wheel and the synchronous belt, so that the L-shaped pipe pointed by the indicator arrow can flow and the other one cannot flow, thereby releasing the installation of the barrel cover at that location and cutting off the flow of oil to the L-shaped pipe at that location;

[0050] Step 4: Open the cabinet door of the machine body in the direction opposite to the indication arrow, and then pull the barrel cover upwards so that the barrel cover can drive the filter plate out of the filter barrel through the tension spring. The hook can be engaged with the slot under the elastic force of the second compression spring, so that the slide tube and the barrel cover are fixed. At this time, the filter plate is completely out of the filter barrel, and the filter plate can be replaced and cleaned. Reverse the above steps to complete the disassembly and assembly of the filter plate.

[0051] Technical effects and advantages of the present invention:

[0052] (1) The present invention utilizes a configuration method in which a filter barrel, a connecting mechanism, a barrel cover, a mounting mechanism and a filtering mechanism are coordinated, and a three-way pipe can be used to simultaneously allow two filter barrels to perform preliminary filtration on oil with impurities. When the filter plates need to be cleaned, the worm can be rotated to drive the valve stem to change the flow direction of the three-way pipe, so that when one of the filter barrels is filtering, the mounting mechanism can also release the installation position of the other barrel cover, so that all the filter plates can be cleaned one by one without stopping the machine, saving the user's time and improving the oil filtering efficiency of the oil filter machine.

[0053] (2) The present invention utilizes a configuration in which the lifting assembly and the filtering mechanism cooperate. After the installation mechanism releases the positioning of the barrel cover, the barrel cover can be moved upward by the slide cylinder in the lifting assembly. After the hook and the slot are engaged, the filter plate can be taken out from the inside of the filter barrel, which facilitates disassembly and prevents the disassembly personnel from getting covered in oil during disassembly.

[0054] (3) The present invention utilizes a setting method in which a filter mechanism and an observation window are matched. After the filter plate connected by a tension spring gradually filters the oil with impurities, the filtered impurities will gradually clog the filter plate, thereby gradually reducing the filtering effect of the filter plate. As a result, the oil above the filter plate gradually increases due to the slow filtering, so that the weight of the filter plate and the oil gradually makes the tension spring longer. At this time, the position of the filter plate on the limit rod can be observed through the observation window, the blockage situation can be clearly understood, and it can be selected whether to replace and clean the filter plate, which is convenient for use. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0056] Figure 2 It is a schematic diagram of the overall front internal structure of the present invention.

[0057] Figure 3 It is a schematic diagram of the overall internal structure of the present invention.

[0058] Figure 4 This is a schematic diagram of the internal structure of the filter barrel of the present invention when viewed from above.

[0059] Figure 5 For the present invention Figure 4 Enlarged structural diagram at A in the middle.

[0060] Figure 6 It is a schematic diagram of the internal structure of the installation mechanism of the present invention from the front.

[0061] Figure 7 For the present invention Figure 6 Enlarged structural diagram at B in the middle.

[0062] Figure 8 For the present invention Figure 6 Enlarged structural diagram at point C in the middle.

[0063] Fig. 9 It is a schematic diagram of the internal structure of the positioning component of the present invention from the side.

[0064] In the figure: 1. body; 2. oil tank; 3. coarse filter tank; 4. fine filter tank; 5. filter barrel; 6. connecting mechanism; 61. oil inlet pipe; 62. three-way pipe; 63. valve stem; 64. L-shaped pipe; 65. worm; 66. synchronous assembly; 661. synchronous wheel; 662. synchronous belt; 67. positioning assembly; 671. turntable; 672. positioning rod; 673. pull rod; 674. first compression spring; 7. barrel cover; 8. mounting mechanism; 81. mounting rod; 82. worm gear; 83. clamping rod; 84. lifting assembly; 841. slide cylinder; 842. sliding block; 843. fixing frame; 844. hook; 845. second compression spring; 9. filtering mechanism; 91. filter plate; 92. limit rod; 93. mounting ring; 94. tension spring; 10. observation window; 11. oil pump. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] The present invention provides Figure 1-9 A low-frequency noise reduction interconnected oil filter unit shown in the figure comprises a body 1, an oil tank 2, a coarse filter tank 3 and a fine filter tank 4 are arranged inside the body 1, connecting pipes are arranged between the oil tank 2, the coarse filter tank 3 and the fine filter tank 4, an oil pump 11 is arranged on the connecting pipe, and multiple oil pumps 11 are electrically connected to an external power supply through an external switch, so that the oil after the initial filtration can be pumped from the oil tank 2 into the coarse filter tank 3 for coarse filtration in turn, and then pumped from the coarse filter tank 3 into the fine filter tank 4 for fine filtration, so that pure oil can be obtained, and the noise generated inside the body 1 can be reduced by adding sound insulation cotton, and heat dissipation is performed by a fan;

[0067] Furthermore, a primary filtering device is provided at the top of the oil tank 2, and the primary filtering device includes: a filter barrel 5, a connecting mechanism 6, a barrel cover 7, a mounting mechanism 8 and a filtering mechanism 9, and the plurality of filter barrels 5 are fixedly connected to the top of the oil tank 2; the connecting mechanism 6 is provided above the plurality of filter barrels 5 for guiding the flow direction of the oil; the barrel cover 7 is slidably and interlacedly connected with the inner cavity of the filter barrel 5, and the barrel cover 7 is used to close the opening of the filter barrel 5; the mounting mechanism 8 is provided at the top of the plurality of filter barrels 5 for positioning the barrel cover; the filtering mechanism 9 is connected to the barrel cover 7 for primary filtering of the oil.

[0068] Specifically, the connecting mechanism 6 includes: an oil inlet pipe 61, a three-way pipe 62, a valve stem 63, an L-shaped pipe 64, a worm 65, a synchronization component 66 and a positioning component 67. The oil inlet pipe 61 is fixedly inserted and connected to the top of the body 1; the three-way pipe 62 is fixedly connected to the bottom of the oil inlet pipe 61. The three-way pipe 62 has a variety of circulation modes. According to needs, both L-shaped pipes 64 can be selected for oil circulation, or the L-shaped pipe 64 on either side can be selected for oil circulation; the valve stem 63 is rotatably inserted and connected to the outside of the three-way pipe 62, and is used to control the rotation of the valve body inside the three-way pipe 62, so as to select Different oil circulation modes; one end of multiple L-shaped tubes 64 is fixedly connected to the three-way tube 62, and the other end of multiple L-shaped tubes 64 is slidably and interlacedly connected to the barrel cover 7; the worm 65 is rotatably arranged inside the body 1, and the worm 65 cooperates with the mounting mechanism 8. The rotation of the worm 65 can drive the valve stem 63 to rotate through the synchronization component 66, and can rotate the worm wheel 82 on the mounting mechanism 8, thereby realizing one rod for multiple uses; the synchronization component 66 is arranged between the valve stem 63 and the worm 65; the positioning component 67 is connected to the worm 65, and is used to fix the worm 65 at multiple points.

[0069] Furthermore, the synchronization component 66 includes: a synchronization wheel 661 and a synchronization belt 662. The multiple synchronization wheels 661 are fixedly connected with the valve stem 63 and the worm 65 respectively; the synchronization belt 662 is arranged between the multiple synchronization wheels 661. The rotation of the worm 65 can drive the valve stem 63 to rotate through the synchronization wheel 661 and the synchronization belt 662, and at the same time, the worm wheel 82 on the mounting mechanism 8 can be rotated, thereby realizing multiple uses of one rod.

[0070] Furthermore, the positioning assembly 67 includes: a turntable 671, a positioning rod 672, a pull rod 673 and a first compression spring 674. A groove is provided on the outer wall of the body 1, and the turntable 671 is located inside the groove. The turntable 671 is fixedly connected to one end of the worm 65. An indicator arrow is provided on the outer wall of the turntable 671, which indicates that both L-shaped tubes 64 are flowing upward, and when it is directed to one side, it indicates that the L-shaped tube 64 on one side can flow while the L-shaped tube 64 on the other side cannot flow; a through groove is provided in the middle of the turntable 671, and a plurality of positioning holes are equidistantly provided on the inner wall of the groove, one end of the plurality of positioning rods 672 are slidably inserted and connected with the inner cavity of the through groove, and the other ends of the plurality of positioning rods 672 are respectively slidably inserted and connected with the inner cavity of the plurality of positioning holes; a plurality of pull rods 673 are respectively fixedly connected to the plurality of positioning rods 672, and the outer wall of the turntable 671 is provided with a through groove. A pull groove is provided, and multiple pull rods 673 are slidably and interlaced with the inner cavity of the pull groove. The pull rod 673 not only plays a positioning role for the positioning rod 672, but also can make the positioning rod 672 disengage from the positioning hole through the pull rod 673, thereby releasing the positioning and facilitating the rotation of the turntable 671; the first compression spring 674 is located inside the through groove, and the two ends of the first compression spring 674 are respectively fixedly connected to multiple positioning rods 672. The first compression spring 674 is always in a compressed state, thereby providing a stable elastic force for the multiple positioning rods 672, so that the positioning rod 672 can extend out of the through groove and interlace with the positioning hole, thereby realizing multi-point positioning of the turntable 671, and at the same time, the worm 65 can also be positioned after rotation to prevent the machine vibration from causing the worm 65 to rotate slightly, resulting in the possibility of positioning failure.

[0071] Specifically, the mounting mechanism 8 includes: mounting rods 81, worm gears 82, clamping rods 83 and a lifting assembly 84. Multiple mounting rods 81 are fixedly connected to the bottom end of the barrel cover 7. Multiple mounting holes are provided at the top of the filter barrel 5. The mounting rods 81 are slidably and interlacedly connected with the inner cavity of the mounting holes; multiple worm gears 82 are respectively sleeved on the outside of multiple filter barrels 5, and multiple worm gears 82 are meshed and connected with the worm 65; multiple clamping rods 83 are fixedly connected to the inner wall of the worm gear 82, and the outer wall of the filter barrel 5 is equidistantly provided with multiple slide grooves communicating with the mounting holes, and multiple clamping rods 83 are respectively slidably and interlacedly connected with the inner cavity of the multiple slide grooves, and the middle parts of the multiple mounting rods 81 are provided with clamping holes, and the clamping rods 83 are slidably and interlacedly connected with the inner cavity of the clamping holes. 3 has an arc-shaped cross section, and the cross section of the slide groove is also an arc-shaped, so that when the worm 65 drives the multiple worm wheels 82 to rotate, one of the worm wheels 82 drives the clamping rod 83 to rotate clockwise to release the clamping of the installation rod 81, while the other worm wheel 82 drives the clamping rod 83 to rotate clockwise to continue to keep the clamping of the installation rod 81. At the same time, the valve stem 63 can also be driven to rotate through the synchronous wheel 661 and the synchronous belt 662, so that one of the L-shaped tubes 64 can flow while the other cannot flow, and the installation of the barrel cover 7 at that location can be released, and the flow of oil to the L-shaped tube 64 at that location can be cut off, and the filtering can be ensured while the other filter plate 91 can be disassembled. The pulling component 84 is arranged on the outside of the barrel cover 7.

[0072] Furthermore, the lifting assembly 84 includes: a slide 841, a sliding block 842, a fixing frame 843, a hook 844, and a second compression spring 845. The slide 841 is fixedly connected to the top of the barrel cover 7, and the slide 841 is sleeved on the outside of the L-shaped tube 64; a plurality of sliding blocks 842 are respectively fixedly connected to the two sides of the inner wall of the slide 841, and the outer wall of the L-shaped tube 64 is provided with a sliding groove. The sliding block 842 is slidably connected with the inner cavity of the sliding groove. The cross-sections of the sliding block 842 and the sliding groove are both T-shaped. The sliding block 842 serves to limit the slide 841, so that the slide 841 can only be displaced in the vertical direction; a plurality of fixing frames 843 are respectively fixedly connected to the two sides of the outer wall of the slide 841, and the fixing frames 843 allow the hook 844 to rotate at a fulcrum ; Multiple hooks 844 are rotatably connected to multiple fixing frames 843 respectively, and multiple slots are provided on the outer wall of the L-shaped tube 64, and the hooks 844 cooperate with the inner cavities of the slots; one end of multiple second compression springs 845 are fixedly connected to the outer wall of the slide 841, and the other ends of multiple second compression springs 845 are fixedly connected to multiple hooks 844 respectively. The second compression springs 845 are always in a compressed state, thereby providing a stable elastic force to the hooks 844, so that the hooks 844 can be tightly attached to the inclined surface opened by the slide 841, and can be stuck into the inside of the slot when overlapping with the slot, so that the slide 841 can be positioned, and disassembly is also relatively simple. The positioning can be released by pressing the two hooks 844 at the same time, thereby realizing the installation of the barrel cover 7 and the filter barrel 5.

[0073] Specifically, the filter mechanism 9 includes: a filter plate 91, a limiting rod 92, a mounting ring 93 and a tension spring 94. The filter plate 91 is slidably and interlacedly connected with the inner cavity of the filter barrel 5; one end of the plurality of limiting rods 92 is fixedly connected to the inner wall of the filter barrel 5, and the other end of the plurality of limiting rods 92 is slidably and interlacedly connected with the filter plate 91. The cross section of the limiting rod 92 is L-shaped. Therefore, when the bottom end of the filter plate 91 is about to contact the bottom end of the limiting rod 92, it can be known through the observation window 10 that the filter plate 91 is clogged with impurities and needs to be cleaned. At the same time, it also plays a role in limiting the filter plate 91, so that the filter plate 91 can be installed horizontally inside the filter barrel 5; the plurality of mounting rings 93 is equidistantly fixedly connected to the side of the barrel cover 7 opposite to the filter plate 91; a plurality of tension springs 94 are respectively arranged between the plurality of mounting rings 93, and the tension spring 94 serves to connect the barrel cover 7 and the filter plate 91, and uses its own elastic force to give an early warning to remind the staff that the filter plate 91 needs to be cleaned. At the same time, after the barrel cover 7 is removed, it can rise together with the barrel cover 7, thereby moving away from the filter barrel 5, so that when disassembling, it is only necessary to release the connection between the hook on the tension spring 94 and the mounting ring 93, and there is no need for the staff to put their hands into the interior of the filter barrel 5 for disassembly, thereby reducing the possibility of oil stains on the staff's clothes, making it easy to use.

[0074] Furthermore, an observation window 10 is embedded in the outer wall of the body 1 and the filter barrel 5. The observation window 10 is made of transparent material, which is convenient for observing the position of the filter plate 91 inside the filter barrel 5, and the front and back of the body 1 are provided with rotatable doors to facilitate the disassembly and assembly of multiple filter plates 91.

[0075] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-frequency noise reduction interconnected oil filter unit, comprising: A machine body (1), wherein an oil tank (2), a coarse filter tank (3) and a fine filter tank (4) are arranged inside the machine body (1); The feature is that a primary filter device is provided at the top of the oil tank (2), and the primary filter device comprises: A filter barrel (5), wherein a plurality of the filter barrels (5) are fixedly connected to the top of the oil tank (2); A connecting mechanism (6), the connecting mechanism (6) being arranged above the plurality of filter barrels (5) and used for guiding the flow direction of the oil, the connecting mechanism (6) comprising: An oil inlet pipe (61), the oil inlet pipe (61) being fixedly inserted and connected to the top end of the machine body (1); A three-way pipe (62), wherein the three-way pipe (62) is fixedly connected to the bottom end of the oil inlet pipe (61); A valve stem (63), the valve stem (63) being rotatably inserted and connected to the outside of the three-way pipe (62); L-shaped tubes (64), one end of each of the L-shaped tubes (64) being fixedly connected to the three-way tube (62), and the other end of each of the L-shaped tubes (64) being slidably connected to the barrel cover (7); a worm (65), the worm (65) being rotatably disposed inside the machine body (1), the worm (65) and the mounting mechanism (8) being in cooperation with each other; A synchronization component (66), the synchronization component (66) being arranged between the valve stem (63) and the worm (65), the synchronization component (66) comprising: Synchronous wheels (661), wherein a plurality of the synchronous wheels (661) are respectively fixedly connected to the valve stem (63) and the worm gear (65); A synchronous belt (662), wherein the synchronous belt (662) is arranged between the plurality of synchronous wheels (661); A positioning assembly (67), the positioning assembly (67) being connected to the worm (65) and used for fixing the worm (65) at multiple points; A barrel cover (7), the barrel cover (7) is slidably connected to the inner cavity of the filter barrel (5), the synchronous wheel (661) and the synchronous belt (662) drive the valve stem (63) to rotate, so that one of the L-shaped tubes (64) can flow and the other L-shaped tube (64) cannot flow, and the barrel cover (7) at that location is removed from installation, and the flow of oil in the L-shaped tube (64) at that location can be cut off; A mounting mechanism (8), the mounting mechanism (8) being arranged at the top ends of the plurality of filter barrels (5) and used for positioning the barrel covers, the mounting mechanism (8) comprising: A mounting rod (81), wherein a plurality of the mounting rods (81) are fixedly connected to the bottom end of the barrel cover (7), a plurality of mounting holes are provided at the top end of the filter barrel (5), and the mounting rods (81) are slidably interlaced with the inner cavities of the mounting holes; A worm wheel (82), wherein a plurality of the worm wheels (82) are respectively sleeved on the outside of a plurality of filter barrels (5), and the plurality of the worm wheels (82) are all meshingly connected with the worm (65); A clamping rod (83), wherein a plurality of the clamping rods (83) are fixedly connected to the inner wall of the worm wheel (82), a plurality of slide grooves communicating with the mounting holes are equidistantly provided on the outer wall of the filter barrel (5), the plurality of the clamping rods (83) are respectively slidably connected to the inner cavities of the plurality of slide grooves, a clamping hole is provided in the middle of the plurality of mounting rods (81), the clamping rods (83) are slidably connected to the inner cavities of the clamping holes, one of the worm wheels (82) drives the clamping rod (83) to rotate clockwise to release the clamping of the mounting rod (81), and the other worm wheel (82) drives the clamping rod (83) to rotate clockwise to continue to maintain the clamping of the mounting rod (81); A lifting component (84), wherein the lifting component (84) is arranged outside the barrel cover (7); A filtering mechanism (9) is connected to the barrel cover (7) and is used for performing a primary filtering on the oil.

2. A low-frequency noise reduction interconnected oil filter unit according to claim 1, characterized in that: The positioning component (67) comprises: A rotating disk (671), wherein the outer wall of the machine body (1) is provided with a groove, the rotating disk (671) is located inside the groove, and the rotating disk (671) is fixedly connected to one end of the worm (65); A positioning rod (672), wherein a through groove is provided in the middle of the rotating disk (671), and a plurality of positioning holes are provided at equal intervals on the inner wall of the groove, one end of each of the plurality of positioning rods (672) is slidably inserted into and connected with the inner cavity of the through groove, and the other ends of each of the plurality of positioning rods (672) are slidably inserted into and connected with the inner cavities of the plurality of positioning holes; A pull rod (673), wherein the plurality of pull rods (673) are respectively fixedly connected to the plurality of positioning rods (672); a pull groove is provided on the outer wall of the rotating disk (671); and the plurality of pull rods (673) are all slidably interlaced with the inner cavity of the pull groove; A first compression spring (674), wherein the first compression spring (674) is located inside the through slot, and both ends of the first compression spring (674) are respectively fixedly connected to a plurality of positioning rods (672).

3. A low-frequency noise reduction interconnected oil filter unit according to claim 1, characterized in that: The lifting assembly (84) comprises: A slide cylinder (841), the slide cylinder (841) being fixedly connected to the top end of the barrel cover (7), and the slide cylinder (841) being sleeved on the outside of the L-shaped tube (64); Sliding blocks (842), wherein a plurality of the sliding blocks (842) are respectively fixedly connected to two sides of the inner wall of the slide tube (841), the outer wall of each of the L-shaped tubes (64) is provided with a sliding groove, the sliding blocks (842) are slidably interlaced with the inner cavity of the sliding groove, and the cross-sections of the sliding blocks (842) and the sliding groove are both T-shaped; A fixing frame (843), wherein a plurality of the fixing frames (843) are respectively fixedly connected to two sides of the outer wall of the slide cylinder (841); A hook (844), wherein a plurality of the hooks (844) are rotatably connected to a plurality of fixing frames (843) respectively, and a plurality of slots are formed on the outer wall of the L-shaped tube (64), and the hooks (844) cooperate with the inner cavities of the slots; A second compression spring (845), one end of each of the plurality of second compression springs (845) is fixedly connected to the outer wall of the slide tube (841), and the other end of each of the plurality of second compression springs (845) is fixedly connected to each of the plurality of hooks (844).

4. A low-frequency noise reduction interconnected oil filter unit according to claim 1, characterized in that: The filtering mechanism (9) comprises: A filter plate (91), the filter plate (91) being slidably interpenetratingly connected to the inner cavity of the filter barrel (5); Limit rods (92), one end of each of the limit rods (92) being fixedly connected to the inner wall of the filter barrel (5), and the other end of each of the limit rods (92) being slidably connected to the filter plate (91); A mounting ring (93), wherein a plurality of the mounting rings (93) are fixedly connected at equal intervals to a side of the barrel cover (7) opposite to the filter plate (91); A tension spring (94), wherein a plurality of the tension springs (94) are respectively arranged between a plurality of mounting rings (93).

5. A low-frequency noise reduction interconnected oil filter unit according to claim 1, characterized in that: The outer walls of the machine body (1) and the filter barrel (5) are both embedded with observation windows (10), and the observation windows (10) are made of transparent material.

6. A low-frequency noise reduction interconnected oil filter unit according to claim 1, characterized in that: Connecting pipes are provided between the oil tank (2), the coarse filter tank (3) and the fine filter tank (4), and an oil pump (11) is provided on the connecting pipes.

7. A method for using a low-frequency noise reduction interconnected oil filter unit according to any one of claims 1 to 6, characterized in that: The specific usage steps are as follows: Step 1: When the indicator arrow on the turntable (671) points upward, oil containing impurities flows through both L-shaped tubes (64) and is transported to the interior of the respective filter barrels (5) for preliminary filtration. After a period of use, the position of the filter plate (91) can be observed through the observation window (10). After the filter plate (91) is clogged by the filtered impurities, the weight of the filter plate (91) and the unfiltered oil will gradually lengthen the tension spring (94), so that any filter plate (91) can be selected for cleaning at an appropriate time. Step 2: When one of the filter plates (91) needs to be cleaned, the pull rod (673) can be pulled so that the pull rod (673) drives the positioning rod (672) to disengage from the positioning hole, thereby driving the turntable (671) to rotate 90°, so that the indicator arrow on the turntable (671) points to the filter barrel (5) that still needs to circulate, and the pull rod (673) is released, so that under the elastic force of the first compression spring (674), the positioning rod (672) can be inserted into the positioning hole at the current position, thereby achieving positioning; Step 3: When the turntable (671) is rotated, the worm (65) rotates accordingly, so that one of the worm wheels (82) rotates clockwise to release the clamping connection with the installation rod (81), while the other worm wheel (82) drives the clamping rod (83) to rotate clockwise to continue to maintain the clamping connection with the installation rod (81). At the same time, the valve stem (63) can also be driven to rotate through the synchronous wheel (661) and the synchronous belt (662), so that the L-shaped tube (64) pointed by the indicator arrow can flow and the other one cannot flow, thereby releasing the installation of the barrel cover (7) at that location and cutting off the flow of oil to the L-shaped tube (64) at that location; Step 4: Open the cabinet door of the machine body (1) in the direction opposite to the indication arrow, so that the barrel cover (7) can be pulled upward, so that the barrel cover (7) drives the filter plate (91) to separate from the filter barrel (5) through the tension spring (94), and the hook (844) can be engaged with the slot under the elastic force of the second compression spring (845), so that the slide cylinder (841) and the barrel cover (7) are fixed, and the filter plate (91) is completely separated from the filter barrel (5), and the filter plate (91) can be replaced and cleaned, and the above steps can be reversed to complete the disassembly and assembly of the filter plate (91).

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