Multi-stage high-efficiency oily precision filter

Abstract

The utility model relates to the technical field of oily precision filters, in particular to a multi-stage high-efficiency oily precision filter. Comprising a frame, two groups of filtering assemblies arranged at the top of the frame, an oil pump arranged in the frame and two groups of oil outlet pipes fixed on the frame and connected with the output ends of the filtering assemblies respectively, wherein the output ends of the oil pump can be connected with the input ends of the filtering assemblies respectively; the filtering assembly comprises a plurality of filters which are fixed on the frame and are connected in series through pipelines; the filter comprises a shell, and a barrel-shaped filter element is longitudinally mounted in the shell; a supporting seat for supporting the barrel-shaped filter element is horizontally fixed at the position, close to the bottom, in the shell, and a plurality of counterbores are symmetrically formed in the supporting seat around the central axis of the supporting seat. The problem that the barrel-shaped filter element is inconvenient to take out from the interior of the shell is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of oil-based precision filters, specifically to a multi-stage high-efficiency oil-based precision filter. Background Technology

[0002] Oil-based precision filters are solid-liquid separation devices specifically designed for high-viscosity, impurity-laden oils. They are widely used in the purification of industrial media such as hydraulic oil, lubricating oil, and cutting fluid. Their core utilizes multi-layered, progressively denser filter elements (such as glass fiber or sintered stainless steel mesh) or polymer composite filter media. Through deep interception, surface adsorption, and inertial collision principles, they efficiently remove micron-sized particles (filtration accuracy up to 1-50μm), sludge, and oxidation products, ensuring oil cleanliness reaches NAS 6 or higher. The equipment is equipped with a pressure-resistant sealing structure, a backwashing regeneration module, and an intelligent differential pressure monitoring system. It can operate continuously and automatically provide early warning and maintenance, effectively extending oil lifespan and reducing equipment wear. Suitable for applications with stringent oil purity requirements, such as metallurgy, machining, and marine power, it helps companies achieve energy conservation, emission reduction, and green production.

[0003] Chinese patent CN216825192U discloses a power oil purification and regeneration adsorption-type oil filter, including an oil inlet valve, a pre-filter, an oil pump, a coarse filter, a balanced charge filter, a collecting filter, an adsorption regeneration system, a precision filter, and an oil outlet valve. The balanced charge filter is equipped with a charging branch and a mixing unit. The regeneration adsorption filter element is filled with a regeneration adsorbent. Degraded power oil is first purified by balanced charge, causing the pollutant particles in the oil to carry a near-balanced positive and negative charge. Utilizing the principle of attraction between positive and negative charges, they adsorb each other, increasing in size, and then pass through a mechanical filter element. The degraded products dissolved in the oil are removed by a special adsorbent in the regeneration filter element, achieving deacidification and decolorization. This oil-based precision filter combines balanced charge, mechanical filtration, and regeneration adsorption technologies, ensuring that all indicators of the treated degraded oil meet relevant standards, thus realizing the recycling of waste oil.

[0004] In the aforementioned oil filtration machine, the filter element is installed inside the precision filter. After a period of use, the filter element typically needs to be replaced to ensure efficient filtration. However, since the filter element is directly installed inside the precision filter, replacement requires inserting the filter element into the precision filter, making removal inconvenient. Therefore, a multi-stage high-efficiency oil-based precision filter is proposed. Utility Model Content

[0005] To address the aforementioned problems, a multi-stage, high-efficiency oil-based precision filter is provided. By opening the sealing cap at the top of the housing, the downward pressure exerted by the cap on the top of the cylindrical filter element is eliminated. Simultaneously, the downward pressure exerted by the cylindrical filter element on the annular support frame is also eliminated, releasing the potential energy accumulated in the spring. This causes the spring to push the annular support frame upward. During the upward movement of the annular support frame, the cylindrical filter element is lifted upward, causing the top of the cylindrical filter element to extend out of the interior of the filter element. This solves the problem of the inconvenience in removing the cylindrical filter element from inside the housing.

[0006] To address the existing technical problems, this application provides a multi-stage high-efficiency oil-based precision filter, including a frame, two sets of filter components disposed on the top of the frame, an oil pump disposed inside the frame and whose output end can be connected to the input end of the filter components respectively, and two sets of oil outlet pipes fixed on the frame and whose front ends are respectively connected to the output end of the filter components. The filter components include multiple filters fixed on the frame and connected in series through pipes.

[0007] The filter includes a housing, and a barrel-shaped filter element is longitudinally installed inside the housing;

[0008] Inside the housing, near the bottom, there is a horizontally fixed support base for supporting the barrel-shaped filter element. The support base has multiple countersunk holes symmetrically opened around its central axis.

[0009] The top of the support base is equipped with an annular support frame that can be pushed upward. The lower end face of the annular support frame is longitudinally fixed with a limiting rod that corresponds to the countersunk hole. The limiting rod is inserted longitudinally into the countersunk hole and extends downward out of the bottom of the support base. The annular support frame is fitted with a spring for supporting the upward movement of the annular support frame. The spring is also installed in the countersunk hole.

[0010] As one technical solution of this application, the limiting rod has a longitudinally formed oil groove on one side for quickly discharging the oil from the countersunk hole.

[0011] As one technical solution of this application, the top of the support base is provided with an annular groove for accommodating the annular support frame;

[0012] The bottom of the annular groove has a longitudinal through hole for draining excess oil from the groove.

[0013] As one technical solution of this application, the bottom end of the limiting rod is fixed with a limiting member to prevent it from dislodging from the countersunk hole.

[0014] As one technical solution of this application, the top of the barrel-shaped filter element is fixed with a top cover, which is used to prevent oil from flowing up and to shape the barrel-shaped filter element.

[0015] The bottom of the barrel-shaped filter element is fixed with a shaping seat for shaping its bottom.

[0016] As a technical solution of this application, the top of the inner ring of the support base is provided with a plurality of arc-shaped limiting blocks for limiting the position at equal intervals around its central axis;

[0017] The bottom of the shaping base is provided with a boss that can be inserted into the inner ring of the support base, and an arc-shaped groove that can be adapted to the first limiting slider is provided on the outer circumference of the boss.

[0018] As one technical solution of this application, a plurality of limiting grooves for limiting are longitudinally formed on the inner wall of the housing;

[0019] Several first limiting sliders, which can slide along the limiting groove, are fixed at equal intervals around the central axis on the outer circumference of the shaping base.

[0020] Several second limiting sliders, which can slide along the limiting groove, are fixed at equal intervals around the central axis on the outer circumference of the top cover.

[0021] As one technical solution of this application, a tapered hole is provided at the center of the top cover;

[0022] The top of the housing is fixed with a sealing cap, and the bottom of the sealing cap is provided with a conical plug that can be inserted into the conical hole. At the center of the conical plug is a feed pipe for conveying oil into the barrel-shaped filter element.

[0023] As one technical solution of this application, the top of the vehicle frame is provided with a plurality of mounting holes for mounting the housing.

[0024] As one technical solution of this application, the bottom of the frame is symmetrically equipped with casters for movement, and a push rod is fixed to the top of the frame near the rear end.

[0025] The advantages of this utility model compared to the prior art are:

[0026] 1. This application removes the downward pressure exerted by the sealing cap on the top of the housing on the top of the barrel-shaped filter element by opening the sealing cap. Simultaneously, the downward pressure exerted by the barrel-shaped filter element on the annular support frame is also removed, releasing the potential energy accumulated in the spring. This causes the spring to push the annular support frame upwards. During the upward movement of the annular support frame, the barrel-shaped filter element is lifted upwards, causing the top of the barrel-shaped filter element to extend out of the interior of the barrel-shaped filter element. This application solves the problem of the inconvenience of removing the barrel-shaped filter element from the housing.

[0027] 2. This application utilizes an oil groove on the outside of the limiting rod to allow oil inside the countersunk hole to drain downwards, effectively preventing oil accumulation inside the countersunk hole. Attached Figure Description

[0028] Figure 1 This is a 3D diagram of a multi-stage, high-efficiency oil-based precision filter.

[0029] Figure 2 This is a schematic diagram of the internal structure of a multi-stage high-efficiency oil-based precision filter.

[0030] Figure 3 This is a 3D view of the filter components in a multi-stage high-efficiency oil-based precision filter.

[0031] Figure 4 This is an exploded view of the filter in a multi-stage high-efficiency oil-based precision filter.

[0032] Figure 5 This is a top view of a filter in a multi-stage, high-efficiency, oil-based precision filter.

[0033] Figure 6 yes Figure 5 Sectional view at point AA.

[0034] Figure 7 This is a partial sectional view of the support base in a multi-stage high-efficiency oil-based precision filter.

[0035] Figure 8 This is a three-dimensional diagram of a barrel-shaped filter element in a multi-stage, high-efficiency, oil-based precision filter.

[0036] Figure 9 yes Figure 7 A magnified structural diagram at point B in the diagram.

[0037] The following are the labels in the diagram: 1. Frame; 12. Caster wheel; 14. Push rod; 15. Mounting hole; 2. Filter assembly; 20. Filter; 21. Housing; 211. Limiting groove; 22. Barrel-shaped filter element; 221. Shaping seat; 222. Boss; 223. Arc groove; 224. First limiting slider; 225. Top cover; 226. Second limiting slider; 227. Conical hole; 23. Sealing cover; 231. Conical plug; 232. Feed pipe; 24. Support seat; 241. Annular groove; 242. Countersunk hole; 243. Through hole; 244. Arc-shaped limiting block; 25. Annular support frame; 251. Limiting rod; 252. Oil groove; 253. Limiting component; 26. Spring; 3. Oil pump; 4. Oil outlet pipe. Detailed Implementation

[0038] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0039] See Figures 1-9As shown, a multi-stage high-efficiency oil-based precision filter includes a frame 1, two sets of filter components 2 disposed on the top of the frame 1, an oil pump 3 disposed inside the frame 1 and whose output end can be connected to the input end of the filter component 2 respectively, and two sets of oil outlet pipes 4 fixed on the frame 1 and whose front ends are connected to the output end of the filter component 2 respectively. The filter component 2 includes multiple filters 20 fixed on the frame 1 and connected in series through pipes.

[0040] The filter 20 includes a housing 21, and a barrel-shaped filter element 22 is longitudinally installed inside the housing 21;

[0041] Inside the housing 21, near the bottom, there is a horizontally fixed support base 24 for supporting the barrel-shaped filter element 22. Multiple countersunk holes 242 are symmetrically opened on the support base 24 around its central axis.

[0042] The top of the support base 24 is provided with an annular support frame 25 that can be pushed upward. The lower end face of the annular support frame 25 is longitudinally fixed with a limiting rod 251 that corresponds one-to-one with the countersunk hole 242. The limiting rod 251 is longitudinally inserted into the countersunk hole 242 and extends downward out of the bottom of the support base 24. The annular support frame 25 is fitted with a spring 26 for supporting the upward movement of the annular support frame 25. The spring 26 is also installed in the countersunk hole 242.

[0043] When disassembling and replacing the barrel-shaped filter element 22, first open the sealing cap 23 at the top of the filter assembly 2. At this time, the downward pressure of the sealing cap 23 on the top of the barrel-shaped filter element 22 disappears. Simultaneously, the downward pressure of the barrel-shaped filter element 22 on the annular support frame 25 disappears, and the potential energy accumulated in the spring 26 is released, causing the spring 26 to push the annular support frame 25 upwards. During this process, the annular support frame 25 drives the limiting rod 251 to move along the countersunk hole 242, effectively ensuring the stability of the annular support frame 25 and preventing displacement during its upward movement. As the annular support frame 25 moves upwards, it lifts the barrel-shaped filter element 22, causing the top of the barrel-shaped filter element 22 to extend out of its interior. This solves the problem of the inconvenience of removing the barrel-shaped filter element 22 from inside the housing 21.

[0044] As shown in the figure, a groove 252 is longitudinally provided on one side of the limiting rod 251 for quickly discharging the oil in the countersunk hole 242.

[0045] To prevent oil from accumulating inside the countersunk hole 242, an oil groove 252 is provided on the outside of the limiting rod 251, allowing the oil inside the countersunk hole 242 to drain downwards through the oil groove 252. This effectively prevents oil from accumulating inside the countersunk hole 242.

[0046] See Figure 7 As shown, the top of the support base 24 is provided with an annular groove 241 for receiving the annular support frame 25;

[0047] The bottom of the annular groove 241 is longitudinally provided with a through hole 243 for discharging excess oil from the annular groove 241.

[0048] To ensure that the annular support frame 25 can fully enter the annular groove 241, multiple through holes 243 are made at the bottom of the annular groove 241. When the annular support frame 25 descends, the bottom of the limiting rod 251 will squeeze the oil inside the annular groove 241. At this time, the oil in the annular groove 241 will flow out downward through the through holes 243. This solves the problem of the oil in the annular groove 241 not being able to drain quickly, thus preventing the annular support frame 25 from fully entering the annular groove 241.

[0049] See Figure 7 As shown, the bottom end of the limiting rod 251 is fixed with a limiting member 253 to prevent it from dislodging from the countersunk hole 242.

[0050] To prevent the ring support frame 25 from disengaging from the countersunk hole 242 during its upward movement, driven by the spring 26 pushing the ring support frame 25, a limiting member 253 is fixed to the bottom of the limiting rod 251. When the limiting rod 251 moves upward, it causes the limiting member 253 at its bottom to move upward synchronously and gradually approach the bottom of the support base 24. When the top of the limiting member 253 contacts the bottom of the support base 24, the upward movement of the limiting rod 251 is blocked. This effectively prevents the limiting rod 251 from disengaging from the countersunk hole 242.

[0051] See Figure 8 As shown, a top cover 225 is fixed to the top of the barrel-shaped filter element 22. The top cover 225 is used to prevent oil from flowing up and to shape the barrel-shaped filter element 22.

[0052] The bottom of the barrel-shaped filter element 22 is fixed with a shaping seat 221 for shaping its bottom.

[0053] A top cover 225 and a shaping base 221 are respectively installed at the top and bottom of the barrel-shaped filter element 22. The shaping base 221 and the top cover 225 shape the top and bottom of the barrel-shaped filter element 22, preventing it from loosening due to prolonged immersion in oil. At the same time, the top cover 225 can also seal the top of the barrel-shaped filter element 22, preventing oil from overflowing from the top and causing incomplete filtration.

[0054] See Figure 6 Figure 7 and Figure 8 As shown, the top of the inner ring of the support base 24 is provided with a number of arc-shaped limiting blocks 244 for limiting the position, which are equidistant from the central axis.

[0055] The bottom of the shaping base 221 is provided with a boss 222 that can be inserted into the inner ring of the support base 24. The outer circumference of the boss 222 is provided with an arc-shaped groove 223 that can be adapted to the first limiting slider 224.

[0056] To ensure the stability of the barrel-shaped filter element 22, a boss 222 is provided at the bottom of the shaping base 221 near its inner ring, and multiple arc-shaped grooves 223 are formed on the outer circumference of the boss 222. When the bottom of the shaping base 221 contacts the support base 24, the boss 222 inserts into the inner ring of the support base 24, allowing the barrel-shaped filter element 22 to be centered in the housing 21. At the same time, the arc-shaped limiting block 244 provided on the inner ring of the support base 24 inserts into the arc-shaped groove 223, so that the arc-shaped groove 223 and the arc-shaped limiting block 244 cooperate to effectively prevent the barrel-shaped filter element 22 from rotating. This ensures the stability of the barrel-shaped filter element 22.

[0057] See Figure 6 and Figure 8 As shown, a plurality of limiting grooves 211 for limiting are longitudinally formed on the inner wall of the housing 21;

[0058] A plurality of first limiting sliders 224, which can slide along the limiting groove 211, are fixed at equal intervals around the central axis on the outer circumference of the shaping base 221.

[0059] Several second limiting sliders 226, which can slide along the limiting groove 211, are fixed at equal intervals around the central axis on the outer circumference of the top cover 225.

[0060] When the barrel-shaped filter element 22 is installed, it slides simultaneously along the limiting groove 211 via the second limiting slider 226 on the outer circumference of its top cover 225 and the first limiting slider 224 on the outer circumference of its bottom shaping seat 221, effectively ensuring that the barrel-shaped filter element 22 can move vertically. This allows the boss 222 at the bottom of the shaping seat 221 to accurately insert into the inner ring of the support seat 24.

[0061] See Figure 4 , Figure 6 and Figure 8 As shown, a conical hole 227 is provided at the center of the top cover 225;

[0062] A sealing cap 23 is fixed to the top of the housing 21. A conical plug 231 that can be inserted into the conical hole 227 is provided at the bottom of the sealing cap 23. A feed pipe 232 for conveying oil to the inside of the barrel-shaped filter element 22 is fixed at the center of the conical plug 231.

[0063] The top of the housing 21 is sealed by the sealing cap 23. Simultaneously, the conical plug 231 at the bottom of the sealing cap 23 inserts into the conical hole 227, blocking the hole. Oil is then conveyed into the barrel-shaped filter element 22 through the feed pipe 232. At this time, oil continuously enters the barrel-shaped filter element 22, causing it to seep out from the side walls and bottom. This improves the filtration efficiency of the barrel-shaped filter element 22.

[0064] See Figure 2 As shown, the top of the frame 1 has a plurality of mounting holes 15 for mounting the housing 21.

[0065] By opening multiple mounting holes 15 on the top of the frame 1, the housing 21 can be installed into the mounting holes 15.

[0066] See Figure 1 and Figure 2 As shown, swivel wheels 12 for movement are symmetrically installed at the bottom of the frame 1, and a push rod 14 is fixed at the top of the frame 1 near the rear end.

[0067] Multiple casters 12 are fixed to the bottom of the frame 1, and a push rod 14 is fixed to the top of the frame 1 near the rear end. When the filter moves, the frame 1 can be moved by the casters 12 at the bottom by holding the push rod 14 and pushing the push rod 14.

[0068] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A multi-stage high-efficiency oil-based precision filter, comprising a frame (1), two sets of filter components (2) disposed on the top of the frame (1), an oil pump (3) disposed inside the frame (1) and whose output end can be connected to the input end of the filter component (2) respectively, and two sets of oil outlet pipes (4) fixed on the frame (1) and whose front ends are respectively connected to the output end of the filter component (2), characterized in that, The filter assembly (2) includes multiple filters (20) fixed on the frame (1) and connected in series by pipes; The filter (20) includes a housing (21), and a barrel-shaped filter element (22) is longitudinally installed inside the housing (21); Inside the housing (21), near the bottom, there is a horizontally fixed support base (24) for supporting the barrel-shaped filter element (22). Multiple countersunk holes (242) are symmetrically opened on the support base (24) around its central axis. The top of the support base (24) is provided with an annular support frame (25) that can be pushed upward. The lower end face of the annular support frame (25) is longitudinally fixed with a limiting rod (251) that corresponds one-to-one with the countersunk hole (242). The limiting rod (251) is longitudinally inserted into the countersunk hole (242) and extends downward out of the bottom of the support base (24). The annular support frame (25) is fitted with a spring (26) for supporting the upward movement of the annular support frame (25). The spring (26) is also installed in the countersunk hole (242).

2. A multi-stage high efficiency oil type precision filter machine as claimed in claim 1, wherein, The limiting rod (251) has a longitudinally opened oil groove (252) on one side for quickly discharging the oil in the countersunk hole (242).

3. The multi-stage high-efficiency oil type precision filter machine according to claim 1, characterized in that, The top of the support base (24) is provided with an annular groove (241) for receiving the annular support frame (25); The bottom of the annular groove (241) is longitudinally provided with a through hole (243) for discharging excess oil from the annular groove (241).

4. The multi-stage high-efficiency oil type precision filter machine according to claim 1, characterized in that, The bottom end of the limiting rod (251) is fixed with a limiting member (253) to prevent it from dislodging from the countersunk hole (242).

5. The multi-stage high efficiency oil type precision filter machine according to claim 1, characterized in that, The top of the barrel-shaped filter element (22) is fixed with a top cover (225), which is used to prevent oil from flowing upward and to shape the barrel-shaped filter element (22). The bottom end of the barrel-shaped filter element (22) is fixed with a shaping seat (221) for shaping its bottom end.

6. A multi-stage high efficiency oil type precision filter machine as claimed in claim 5, wherein, The top of the inner ring of the support base (24) is provided with a number of arc-shaped limiting blocks (244) for limiting the position, which are equidistant from the central axis. The bottom of the shaping base (221) is provided with a boss (222) that can be inserted into the inner ring of the support base (24), and an arc groove (223) that can be adapted to the first limiting slider (224) is provided on the outer circumference of the boss (222).

7. A multi-stage high efficiency oil type precision filter machine as claimed in claim 5 wherein, The inner wall of the housing (21) is provided with a plurality of limiting grooves (211) for limiting the position. The outer circumference of the shaping base (221) is fixed with several first limiting sliders (224) that can slide along the limiting groove (211) around its central axis; On the outer circumference of the top cover (225), there are several second limiting sliders (226) that can slide along the limiting groove (211).

8. A multi-stage high efficiency oil type precision filter machine as claimed in claim 5 wherein, A conical hole (227) is provided at the center of the top cover (225); The top of the housing (21) is fixed with a sealing cap (23), and the bottom of the sealing cap (23) is provided with a conical plug (231) that can be inserted into the conical hole (227). At the center of the conical plug (231) is a feed pipe (232) for conveying oil to the inside of the barrel-shaped filter element (22).

9. A multi-stage high-efficiency oil-based precision filter according to claim 1, characterized in that, The top of the frame (1) has a plurality of mounting holes (15) for mounting the housing (21).

10. The multi-stage high efficiency oil type precision filter machine according to claim 1, characterized in that, The bottom of the frame (1) is symmetrically equipped with casters (12) for movement, and a push rod (14) is fixed to the top of the frame (1) near the rear end.

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