Filtering device for oil-water separation

Abstract

The utility model discloses a filtering device for oil-water separation, which comprises a box body, a multi-stage filtering mechanism, a filter cartridge clamping mechanism and a clamping auxiliary mechanism, the multi-stage filtering mechanism comprises a fixed plate, a coarse filter cartridge, a fine filter plate and a mounting plate, and the filter cartridge clamping mechanism comprises a clamping pipe, a clamping rod, rotating teeth, a rotating sleeve, a pushing rod, a moving frame and a toothed plate. The coarse filter cylinder serves as a first filter barrier and can efficiently intercept large-particle impurities, the service life of a follow-up fine filter assembly is remarkably prolonged, and a fine filter channel formed by the fine filter plate and the multiple sets of fine filter plates 4 is responsible for separating tiny impurities and emulsifying oil water. The sleeving design of the clamping pipe and the clamping rod thoroughly abandons the traditional thread or flange connection mode, and the coarse filter cartridge can be quickly mounted and dismounted without any professional tool.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, and more specifically, to a filtration device for oil-water separation. Background Technology

[0002] Existing oil-water separation and filtration devices generally suffer from the technical bottleneck of difficulty in achieving multi-stage filtration. Traditional devices mostly employ a single filter layer structure, lacking a scientifically sound filtration gradient design, resulting in unsatisfactory filtration effects. These single-layer filtration systems cannot simultaneously handle impurities of different particle sizes and emulsified oil-water mixtures, leading to low filtration efficiency. Especially when treating complex oil-water mixtures such as industrial wastewater and catering wastewater, the single filter layer quickly becomes saturated and clogged, not only shortening the equipment's lifespan but also significantly reducing treatment efficiency.

[0003] As the first line of defense in the entire oil-water separation system, the reliability and ease of maintenance of coarse filtration directly affect the working efficiency and service life of the entire device. However, existing coarse filtration devices generally suffer from inconvenient installation and disassembly. Traditional coarse filter cartridges are often fixed using threaded or flanged connections, which require the use of specialized tools for disassembly and assembly, making the operation cumbersome and time-consuming. During long-term use, the threads are prone to jamming due to corrosion or wear, and the sealing gaskets at the flange connections are also prone to aging and deformation, leading to increased disassembly difficulty and even requiring destructive removal. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In view of the problems existing in the prior art, this utility model provides a filter device for oil-water separation, so as to solve the technical problems mentioned in the background art, such as the difficulty in achieving multi-stage filtration of oil and water, and the inconvenience of installing and disassembling the coarse filter.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an oil-water separation filtration device, comprising a housing, a multi-stage filtration mechanism, a filter cartridge clamping mechanism, and a clamping auxiliary mechanism. The multi-stage filtration mechanism includes a fixed plate, a coarse filter cartridge, a fine filter plate, and an mounting plate. The fixed plate is fixedly installed on the inner wall of the housing. The coarse filter cartridge is installed on the fixed plate through the filter cartridge clamping mechanism. The mounting plate is installed on both sides of the fine filter plate and is detachably installed on the inner wall of the housing. Multiple sets of fine filter plates form a filtration channel. The filter cartridge clamping mechanism includes a clamping tube, a clamping rod, a rotating tooth, a rotating sleeve, a pushing rod, a moving frame, and a toothed plate. The rotating sleeve is rotatably limited and installed on the side wall of the clamping tube. The rotating tooth is installed at one end of the rotating sleeve. The moving frame is longitudinally movable and installed on the outer wall of the clamping tube. The toothed plate is installed on the moving frame and meshes with the rotating tooth. The pushing rod is laterally movable and installed on the side wall of the clamping tube. The pushing rod is threadedly connected to the rotating sleeve. The longitudinal movement of the toothed plate drives the rotating tooth and the rotating sleeve to rotate, causing the pushing rod to extend into or away from the clamping rod.

[0008] The present invention is further configured such that the snap-fit ​​auxiliary mechanism includes a spring rod, a rod groove, a misalignment plate, a rotating tube, a spring-loaded pin, and a top-fixing ring. The spring rod is mounted on the movable frame, and multiple sets of rod grooves are longitudinally arranged on the side wall of the snap-fit ​​tube. The spring rod can extend into the rod groove step by step to make the movable frame move longitudinally stably. The top-fixing ring is fixedly mounted on the outer wall of the snap-fit ​​tube, and multiple sets of spring-loaded pins are arranged on the top-fixing ring. The rotating tube is limited to rotating and mounted on the outer wall of the snap-fit ​​tube. The misalignment plate is installed between the rotating tube and the movable frame. The rotation of the rotating tube is achieved by using the misalignment plate to move the longitudinal frame. The spring-loaded pins push against the rotating tube step by step to make the rotating tube rotate stably.

[0009] The present invention is further configured such that a connecting plate is installed at the bottom end of the side wall of the card tube, and a reset spring is installed between the connecting plate and the moving frame. The reset spring ensures that each component can reliably return to its initial position, facilitating the next operation.

[0010] The present invention is further configured such that a cover is installed at the top opening of the box, and an adding tube is provided through the cover, with one end of the adding tube extending into the coarse filter cartridge. The adding tube extends directly into the coarse filter cartridge to ensure accurate introduction of the liquid to be treated and avoid splashing.

[0011] The present invention is further configured such that a discharge pipe is installed on the side end of the box body, and a side discharge pipe is installed on the front side of the box body. The multi-position discharge port design adapts to the oil-water separation characteristics and facilitates separate collection.

[0012] The present invention is further configured such that side plates are installed on both sides of the coarse filter cartridge, and a connecting plate is fixedly installed on the top end of the side plates. The side plates are installed on both sides of the coarse filter cartridge to provide a structural basis for the snap-fit ​​system.

[0013] The present invention is further configured such that one end of the snap-fit ​​rod is fixedly mounted on the fixed plate, and the snap-fit ​​tube sleeve fits the snap-fit ​​rod, so that the snap-fit ​​rod extends through the side plate and engages with the snap-fit ​​tube.

[0014] The present invention is further configured such that the mounting plate has bolt holes, and the fine filter plate is fixed inside the housing by external bolts passing through the bolt holes.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a filtration device for oil-water separation, which has the following beneficial effects:

[0017] This invention features a multi-stage filtration mechanism. The coarse filter cartridge serves as the first filtration barrier, effectively intercepting larger particulate impurities and significantly extending the service life of subsequent fine filtration components. The fine filtration channel, composed of the fine filter plate and multiple sets of fine filter plates, is responsible for separating tiny impurities and emulsified oil and water. By extending the filtration path and increasing the contact area, the oil-water separation efficiency and purity are greatly improved.

[0018] This utility model features a filter cartridge snap-fit ​​mechanism. The insert design of the snap-fit ​​tube and snap-fit ​​rod completely eliminates the traditional threaded or flange connection method, allowing for quick installation and disassembly of the coarse filter cartridge without any professional tools. The ingenious meshing design of the rotating sleeve, rotating teeth, and toothed plate transforms simple rotational operations into precise mechanical movements, enabling the push rod to accurately extend into or retract from the snap-fit ​​rod, achieving a secure lock or quick release of the coarse filter cartridge.

[0019] This utility model is equipped with a snap-fit ​​auxiliary mechanism. The step-by-step design of the spring rod and multiple sets of rod grooves provides precise motion trajectory control, ensuring that the moving frame will not deviate from the predetermined path during longitudinal movement. This solves the common problems of jamming and instability in traditional snap-fit ​​devices. The ingenious cooperation between the rotating tube and the misalignment plate transforms the rotational motion into precise longitudinal displacement, making the entire operation process smoother and more natural. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the device in the unused state of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the box in this utility model;

[0022] Figure 3 This is a structural schematic diagram of the coarse filter cartridge installation method in this utility model;

[0023] Figure 4 This is a schematic diagram of the filter cartridge clamping mechanism and clamping auxiliary mechanism in this utility model;

[0024] Figure 5This is a schematic diagram of the internal structure of the filter cartridge clamping mechanism and the clamping auxiliary mechanism in this utility model.

[0025] In the diagram: 1. Housing; 2. Fixing plate; 3. Coarse filter cartridge; 4. Fine filter plate; 5. Mounting plate; 6. Clip-on pipe; 7. Clip-on rod; 8. Rotating gear; 9. Rotating sleeve; 10. Push rod; 11. Moving frame; 12. Toothed plate; 13. Spring rod; 14. Rod groove; 15. Misalignment plate; 16. Rotating tube; 17. Spring pin; 18. Top fixing ring; 19. Connecting plate; 20. Return spring; 21. Cover; 22. Adding pipe; 23. Discharge pipe; 24. Side discharge pipe; 25. Side plate; 26. Bolt hole. Detailed Implementation

[0026] It should be noted that, where there is no conflict, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figures 1-5 A filter device for oil-water separation includes a housing 1, a multi-stage filtration mechanism, a filter cartridge clamping mechanism, and a clamping auxiliary mechanism. The multi-stage filtration mechanism includes a fixed plate 2, a coarse filter cartridge 3, a fine filter plate 4, and a mounting plate 5. The fixed plate 2 is fixedly installed on the inner wall of the housing 1. The coarse filter cartridge 3 is installed on the fixed plate 2 through the filter cartridge clamping mechanism. The mounting plate 5 is installed on both sides of the fine filter plate 4 and is detachably installed on the inner wall of the housing 1. Multiple sets of fine filter plates 4 form a filtration channel. The filter cartridge clamping mechanism includes a clamping tube 6, a clamping rod 7, and rotating teeth 8. The components include a rotating sleeve 9, a push rod 10, a movable frame 11, and a toothed plate 12. The rotating sleeve 9 is rotatably mounted on the side wall of the clamping tube 6. The rotating tooth 8 is mounted on one end of the rotating sleeve 9. The movable frame 11 is longitudinally mounted on the outer wall of the clamping tube 6. The toothed plate 12 is mounted on the movable frame 11 and meshes with the rotating tooth 8. The push rod 10 is laterally mounted on the side wall of the clamping tube 6 and is threadedly connected to the rotating sleeve 9. The longitudinal movement of the toothed plate 12 drives the rotating tooth 8 and the rotating sleeve 9 to rotate, causing the push rod 10 to extend into or away from the clamping rod.

[0030] In this embodiment, the mixed oil and water first enters the device through the addition pipe 22 on the cover 21 and flows directly into the coarse filter cartridge 3. In the coarse filter cartridge 3, larger particles of impurities are trapped, and the initially purified mixture flows out through the wall of the coarse filter cartridge 3. Subsequently, the liquid continues to flow through the filtration channel composed of multiple sets of fine filter plates 4. At this stage, smaller impurities and some oil and water begin to separate. The fine filter plates 4 are arranged to form a continuous filtration channel, which extends the liquid flow path and enhances the oil-water separation effect, ultimately achieving effective oil-water separation. The operator moves the side plates on both sides of the coarse filter cartridge 3. Align the snap-fit ​​rod 7 on the fixed plate 25, so that the snap-fit ​​rod 7 passes through the side plate 25 and extends into the snap-fit ​​tube 6. Then, push the moving frame 11 to move longitudinally. The moving frame 11 drives the toothed plate 12 to move, causing the rotating tooth 8 and the rotating sleeve 9 to continue to rotate. By rotating the rotating sleeve 9, the rotating tooth 8 is driven to rotate, so that the push rod 10 extends inward along the thread path into the snap-fit ​​rod and forms a reliable snap-fit ​​with the side plate 25, thus completing the fixed installation of the coarse filter cartridge 3. The disassembly process is the opposite. By rotating the rotating sleeve 9 in the opposite direction, the push rod 10 is withdrawn from the snap-fit ​​rod, releasing the coarse filter cartridge 3.

[0031] The locking auxiliary mechanism includes a spring rod 13, a rod groove 14, a misalignment plate 15, a rotating tube 16, a spring-loaded pin 17, and a top-fixing ring 18. The spring rod 13 is mounted on the moving frame 11. Multiple sets of rod grooves 14 are longitudinally arranged on the side wall of the locking tube 6. The spring rod 13 can extend into the rod groove 14 step by step to make the moving frame 11 move longitudinally stably. The top-fixing ring 18 is fixedly mounted on the outer wall of the locking tube 6. Multiple sets of spring-loaded pins 17 are arranged on the top-fixing ring 18. The rotating tube 16 is limited to rotate and mounted on the outer wall of the locking tube 6. The misalignment plate 15 is installed between the rotating tube 16 and the moving frame 11. The rotation of the rotating tube 16 uses the misalignment plate 15 to move the longitudinal frame. The spring-loaded pins 17 push against the rotating tube 16 step by step to make the rotating tube 16 rotate stably.

[0032] In this embodiment, when the operator rotates the rotating tube 16, the misalignment plate 15 converts the rotational motion into the longitudinal movement of the moving frame 11. During this process, the spring rod 13 extends into the rod groove 14 on the side wall of the clamping tube 6 step by step to ensure that the moving frame 11 moves stably along the predetermined trajectory. At the same time, the spring pin 17 on the top fixing ring 18 pushes against the rotating tube 16 step by step to provide stable damping force for the rotation and prevent the rotation from being too fast or too violent. After the clamping is completed, if disassembly is required, the operator rotates the rotating tube 16 in the opposite direction, and the return spring 20 will provide a return force to assist the moving frame 11 in returning to its original position, which is convenient for reassembly next time. The whole process realizes precise positioning and stable operation, and reduces the risk of operational errors.

[0033] Please see Figures 1-5As a supplementary embodiment of an oil-water separation filtration device with a multi-stage filtration mechanism, a filter cartridge clamping mechanism, and a clamping auxiliary mechanism: A connecting plate 19 is installed at the bottom end of the side wall of the clamping pipe 6, and a return spring 20 is installed between the connecting plate 19 and the moving frame 11. A cover 21 is installed at the top opening end of the housing 1, and an adding pipe 22 is provided through the cover 21. One end of the adding pipe 22 extends to the coarse filter cartridge 3. A discharge pipe 23 is installed at the side end of the housing 1, and a side discharge pipe 24 is installed at the front side of the housing 1. Side plates 25 are installed on both sides of the coarse filter cartridge 3, and the connecting plate 19 is fixedly installed at the top end of the side plate 25. One end of the clamping rod 7 is fixedly installed on the fixed plate 2, and the clamping pipe 6 inserts the clamping rod 7 so that the clamping rod 7 extends through the side plate 25 and engages with the clamping pipe 6. A bolt hole 26 is opened on the mounting plate 5, and an external bolt passes through the bolt hole 26 to fix the fine filter plate 4 inside the housing 1.

[0034] More specifically, the oil-water mixture is poured into the device through the addition pipe 22 on the cover 21. The liquid directly enters the coarse filter cartridge 3, where it undergoes preliminary filtration to remove larger impurities. The liquid then flows out of the coarse filter cartridge 3 and enters the filtration channel composed of multiple sets of fine filter plates 4. At this stage, even finer impurities are intercepted, and the oil and water begin to separate. The oil-water separation mainly relies on the density difference and the selective adsorption of the fine filter material. The oil gradually floats to the top, while the water sinks. The filtered clear water settles at the bottom of the housing 1 and can be discharged through the discharge pipe 23 at the bottom. After a period of use, the filtration device needs to be cleaned and maintained. First, close all discharge outlets, open the cover 21, and rotate the rotating sleeve 9 of the filter cartridge clamping mechanism to drive the clamping auxiliary mechanism to operate, causing the push rod 10 to retract from the clamping rod, releasing the coarse filter cartridge 3. Remove the coarse filter cartridge 3 for cleaning, and at the same time, remove the bolts, take out the mounting plate 5 and the fine filter plate 4 for cleaning or replacement. After cleaning, reassemble the device according to the installation steps to complete the maintenance work.

[0035] In summary, during the use or operation of the overall equipment: when a multi-stage filtration mechanism is required, the mixed oil and water first enter the device through the addition pipe 22 on the cover 21 and flow directly into the coarse filter cylinder 3. In the coarse filter cylinder 3, larger particles of impurities are trapped, and the initially purified mixture flows out through the wall of the coarse filter cylinder 3. Subsequently, the liquid continues to flow through the filtration channel composed of multiple sets of fine filter plates 4. At this stage, smaller impurities and some oil and water begin to separate. The fine filter plates 4 are arranged to form a continuous filtration channel, which extends the liquid flow path, enhances the oil-water separation effect, and ultimately achieves effective oil-water separation.

[0036] When the filter cartridge snap-fit ​​mechanism is in operation, it enables the rapid installation and disassembly of the coarse filter cartridge 3. The operator aligns the side plates 25 on both sides of the coarse filter cartridge 3 with the snap-fit ​​rods 7 on the fixed plate 2, so that the snap-fit ​​rods 7 pass through the side plates 25 and extend into the snap-fit ​​tube 6. Then, the operator pushes the moving frame 11 to move longitudinally. The moving frame 11 drives the toothed plate 12 to move, causing the rotating tooth 8 and the rotating sleeve 9 to continue to rotate. By rotating the rotating sleeve 9, the rotating tooth 8 is driven to rotate, so that the push rod 10 extends inward along the thread path into the snap-fit ​​rod 7 and forms a reliable snap-fit ​​with the side plate 25, thus completing the fixed installation of the coarse filter cartridge 3. The disassembly process is the opposite. By rotating the rotating sleeve 9 in the opposite direction, the push rod 10 is withdrawn from the snap-fit ​​rod 7, releasing the coarse filter cartridge 3.

[0037] When the auxiliary locking mechanism is in operation, the operator rotates the rotating tube 16, and the misalignment plate 15 converts the rotational motion into the longitudinal movement of the moving frame 11. During this process, the spring rod 13 extends into the rod groove 14 on the side wall of the locking tube 6 step by step to ensure that the moving frame 11 moves stably along the predetermined trajectory. At the same time, the spring pin 17 on the top fixing ring 18 pushes against the rotating tube 16 step by step to provide stable damping force for the rotation and prevent the rotation from being too fast or too violent. After the locking is completed, if disassembly is required, the operator rotates the rotating tube 16 in the opposite direction, and the return spring 20 will provide the return force, and the auxiliary moving frame 11 returns to its original position for easy reinstallation next time. The whole process achieves precise positioning and stable operation, reducing the risk of operational errors.

[0038] The oil-water mixture is poured into the device through the addition pipe 22 on the cover 21. The liquid directly enters the coarse filter cartridge 3, where it undergoes preliminary filtration to remove larger impurities. The liquid then flows out of the coarse filter cartridge 3 and enters the filtration channel composed of multiple sets of fine filter plates 4. At this stage, even finer impurities are intercepted, and the oil and water begin to separate. The oil-water separation mainly relies on the density difference and the selective adsorption of the fine filter material. The oil gradually floats to the top, while the water sinks. The filtered clear water settles at the bottom of the housing 1 and can be discharged through the discharge pipe 23 at the bottom. After a period of use, the filtration device needs to be cleaned and maintained. First, close all discharge outlets, open the cover 21, and rotate the rotating sleeve 9 of the filter cartridge clamping mechanism to drive the clamping auxiliary mechanism to operate, causing the push rod 10 to retract from the clamping rod 7, releasing the coarse filter cartridge 3. Remove the coarse filter cartridge 3 for cleaning, and at the same time, remove the bolts, take out the mounting plate 5 and the fine filter plate 4 for cleaning or replacement. After cleaning, reassemble the device according to the installation steps to complete the maintenance work.

[0039] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A filtering device for separating oil and water, comprising a box (1), a multi-stage filtering mechanism, a filter cartridge clamping mechanism and a clamping auxiliary mechanism, characterized in that: The multi-stage filtration mechanism includes a fixed plate (2), a coarse filter cartridge (3), a fine filter plate (4), and a mounting plate (5). The fixed plate (2) is fixedly installed on the inner wall of the housing (1). The coarse filter cartridge (3) is installed on the fixed plate (2) through a filter cartridge snap-fit ​​mechanism. The mounting plate (5) is installed on both sides of the fine filter plate (4). The mounting plate (5) is detachably installed on the inner wall of the housing (1). Multiple sets of fine filter plates (4) form a filtration channel. The filter cartridge snap-fit ​​mechanism includes a snap-fit ​​tube (6), a snap-fit ​​rod (7), a rotating tooth (8), a rotating sleeve (9), a pushing rod (10), and a moving... The moving frame (11) and the toothed plate (12), the rotating sleeve (9) are limited and rotated and installed on the side wall of the clamping tube (6), the rotating tooth (8) is installed at one end of the rotating sleeve (9), the moving frame (11) is longitudinally moved and installed on the outer wall of the clamping tube (6), the toothed plate (12) is installed on the moving frame (11), the toothed plate (12) meshes with the rotating tooth (8), the push rod (10) is laterally moved and installed on the side wall of the clamping tube (6), the push rod (10) is threadedly connected to the rotating sleeve (9), the longitudinal movement of the toothed plate (12) drives the rotating tooth (8) and the rotating sleeve (9) to rotate.

2. The filter device for separating oil and water according to claim 1, characterized in that: The locking auxiliary mechanism includes a spring rod (13), a rod groove (14), a misalignment plate (15), a rotating tube (16), a spring-loaded pin (17), and a top fixing ring (18). The spring rod (13) is installed on the moving frame (11). Multiple sets of rod grooves (14) are longitudinally arranged on the side wall of the locking tube (6). The spring rod (13) can extend into the rod groove (14) step by step to make the moving frame (11) move longitudinally in a stable manner. The top fixing ring (18) is fixedly installed on the outer wall of the locking tube (6). Multiple sets of spring-loaded pins (17) are arranged on the top fixing ring (18). The rotating tube (16) is limited to rotate and installed on the outer wall of the locking tube (6). The misalignment plate (15) is installed between the rotating tube (16) and the moving frame (11).

3. The filter device for separating oil and water according to claim 1, characterized in that: A connecting plate (19) is installed at the bottom end of the side wall of the card tube (6), and a return spring (20) is installed between the connecting plate (19) and the moving frame (11).

4. The filter device for separating oil and water according to claim 1, characterized in that: The top opening of the box (1) is provided with a cover (21), and an adding tube (22) is provided through the cover (21), with one end of the adding tube (22) extending into the coarse filter cartridge (3).

5. The filter device for separating oil and water according to claim 1, characterized in that: The side end of the box (1) is provided with a discharge pipe (23), and the front side of the box (1) is provided with a side discharge pipe (24).

6. The filter device for separating oil and water according to claim 3, characterized in that: Side plates (25) are installed on both sides of the coarse filter cartridge (3), and a connecting plate (19) is fixedly installed on the top end of the side plates (25).

7. The filter device for separating oil and water according to claim 6, characterized in that: One end of the snap-fit ​​rod (7) is fixedly installed on the fixing plate (2), and the snap-fit ​​tube (6) fits the snap-fit ​​rod (7) into it, so that the snap-fit ​​rod (7) extends through the side plate (25) and engages with the snap-fit ​​tube (6).

8. The filter device for separating oil and water according to claim 1, characterized in that: The mounting plate (5) has bolt holes (26), and the fine filter plate (4) is fixed inside the housing (1) by external bolts passing through the bolt holes (26).

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