Liquid-liquid separation coalescence filter element convenient to install
By using an easy-to-install liquid-liquid separation coalescing filter element, and utilizing a fixed frame and threaded rod structure to achieve quick installation and disassembly of the filter element, combined with high-density fluoropolymer materials to achieve efficient oil-water separation, the problem of inconvenient filter element installation is solved, and the working efficiency of the device is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-03
AI Technical Summary
In existing technologies, the filter element is directly installed inside the cylinder, which makes installation and disassembly inconvenient and affects the working efficiency of the device.
The filter element is designed for easy installation and includes a fixed frame, connecting seat, threaded rod, and locking block. It can be quickly installed and removed by sliding the locking block through the threaded rod, and oil-water separation is achieved by using a coalescing layer made of high-density fluoropolymer.
It enables convenient installation and removal of the filter element, improves the working efficiency of the device, and achieves efficient oil-water separation.
Smart Images

Figure CN224071233U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of coalescing filter technology, and in particular to a liquid-liquid separation coalescing filter that is easy to install. Background Technology
[0002] A coalescing filter cartridge is a filtration device that uses coalescing material as the medium. It is the main component in the coalescer that plays a filtering role. Tiny oil droplets dispersed in the liquid are captured by the ultrafine fibers on the surface of the oleophilic filter material and coalesce to form larger oil droplets. Since the density of oil droplets is less than that of water, the coalesced oil droplets automatically float to the top of the coalescer and flow out from the top opening of the coalescer. Water flows outward directly through the side wall of the filter material, thereby achieving the effect of oil and water separation.
[0003] A search revealed Chinese Patent Publication No. CN213643384U, which discloses a vertical coalescing and separating integrated dewatering unit, including a filter. The filter comprises a cylindrical body and a coalescing and separating filter element. The coalescing and separating filter element is disposed inside the cylindrical body and consists of a coalescing filter element and a separating filter element. The bottom of the coalescing filter element is fixedly connected to the top of the separating filter element. A filter element support is fixedly connected to the bottom of the separating filter element. A sealing gasket is provided between the filter element support and the bottom of the separating filter element. A separating plate is fixedly connected to the bottom of the filter element support, and the outer side of the separating plate is fixedly connected to the inner wall of the cylindrical body. This utility model adopts an integrated coalescing and separating design in terms of structure, combining the coalescing filter element and the separating filter element into a single coalescing-separating filter element. This effectively reduces the filter volume and effectively removes a large amount of water contained in the oil, achieving the purpose of purifying the oil. The filter is vertically placed, has a compact structure, is easy to manufacture and install, and is safe and reliable. However, in actual use, after a long period of use, the coalescing effect of the coalescing filter element deteriorates, thus requiring replacement of the coalescing filter element. However, since the filter element is directly set inside the cylinder, it is not easy to install and disassemble conveniently, thereby affecting the working efficiency of the device. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides an easy-to-install liquid-liquid separation coalescing filter element, aiming to improve the problem that the filter element in the prior art is directly set inside the cylinder, which makes it difficult to achieve convenient installation and disassembly.
[0005] To achieve the above objectives, this utility model adopts the following technical solution: a liquid-liquid separation coalescing filter element that is easy to install, comprising a fixed frame and a connecting seat. A drainage layer is fixedly connected to the outer wall of the fixed frame. End caps are fixedly connected to both the front and rear ends of the fixed frame. An installation shell is fixedly connected to the outer wall of the rear end cap. Limiting shells are fixedly connected to the left and right ends of the rear side of the installation shell. A threaded rod is rotatably connected to the inner wall of the limiting shell. A knob is fixedly connected to one end of the threaded rod. A locking block is threadedly connected to the outer wall of the threaded rod. The front side of the locking block is slidably connected to the inner wall of the limiting shell. Rectangular grooves are opened on the left and right sides of the inner wall of the rear end cap. An access shell is fixedly connected to the inside of the connecting seat. Locking grooves are opened on the left and right sides of the access shell. Adjacent sides of the two locking blocks pass through the corresponding rectangular grooves and engage with the corresponding locking grooves. A limiting component is provided on the front outer wall of the connecting seat. A coalescing filter element mechanism is provided on the inner wall of the fixed frame.
[0006] The above technical solution allows the bottom end cap to be connected to the access shell for initial installation. Then, by rotating the knob, the threaded rod drives the locking block to slide, thereby locking the filter element through the rectangular groove and the locking groove inside the access shell. This enables quick installation of the filter element and, conversely, allows for disassembly, effectively improving the efficiency of filter element installation and removal.
[0007] As a further description of the above technical solution:
[0008] The coalescing filter element mechanism includes a support layer, the outer wall of which is fixedly connected to the inner wall of the fixed frame, a first coalescing layer fixedly connected to the inner wall of the support layer, a second coalescing layer fixedly connected to the inner wall of the first coalescing layer, a flow guiding layer fixedly connected to the inner wall of the second coalescing layer, and a connecting frame fixedly connected to the inner wall of the flow guiding layer.
[0009] The above technical solution enables water and oil liquids to adhere to the surface of the coalescing layer when high-density fluoropolymers and fluoropolymers constitute coalescing layer one and coalescing layer two. As a result, tiny oil droplets dispersed in the water liquid can be guided through the flow guide layer and discharged through the top opening of the coalescer. Water is discharged downward under the action of gravity, thus achieving the purpose of efficient oil-water separation.
[0010] As a further description of the above technical solution:
[0011] The limiting component includes multiple limiting posts, the rear ends of which are fixedly connected to the four corners on the front side of the connecting seat. Limiting grooves are provided at the four corners on the rear side of the mounting shell, and the front ends of the limiting posts engage with the limiting grooves.
[0012] The above technical solution improves the limiting effect between the mounting shell and the connecting seat by engaging multiple limiting posts and limiting grooves.
[0013] As a further description of the above technical solution:
[0014] The coalescing filter element mechanism also includes multiple pressure-resistant strips, with each adjacent side of the multiple pressure-resistant strips being fixedly connected at equal intervals to the outer wall of the connecting frame.
[0015] The above technical solution improves the protection of the outer wall of the connecting skeleton by connecting multiple pressure-resistant strips.
[0016] As a further description of the above technical solution:
[0017] A handle is fixedly connected inside the front mounting shell, and a rubber sleeve is fixedly connected to the middle of the handle.
[0018] The above technical solution improves the protection of the grip during use by fixing it with a rubber sleeve.
[0019] As a further description of the above technical solution:
[0020] Multiple corner protectors are fixedly connected to the outer wall of the mounting shell, and the outer walls of the multiple corner protectors are all designed to be smooth.
[0021] The above technical solution enables the outer wall of the mounting shell to be protected by the connection of the corner protector.
[0022] As a further description of the above technical solution:
[0023] Multiple protrusions are fixedly connected to the outer walls of both knobs, and rubber rings are fixedly connected to the outer walls of both locking blocks.
[0024] The above technical solution improves the static friction of the knob by connecting multiple protrusions, thus enhancing the anti-slip effect.
[0025] As a further description of the above technical solution:
[0026] The outer wall of the connector is fixedly connected to multiple mounting seats, and the front side of each mounting seat has a mounting groove.
[0027] The above technical solution enables flexible installation of the connector by connecting the mounting base and the mounting slot.
[0028] This utility model has the following beneficial effects:
[0029] 1. In this utility model, the connecting seat is fixed in the corresponding position so that it can be connected to the bottom end cover. When the knob is rotated, the threaded rod drives the locking block to slide, thereby locking the locking block with the access shell through the rectangular groove. At the same time, the filter element can be conveniently installed by connecting multiple limiting posts and limiting grooves, and disassembly can be completed by reversing them. This effectively improves the efficiency of filter element installation and disassembly and increases the working efficiency of the device.
[0030] 2. In this utility model, the first coalescing layer is made of high-density fluoropolymer, and the second coalescing layer is made of fluoropolymer, making the surfaces of the first and second coalescing layers smooth, making it difficult for water and oil to adhere. As a result, the tiny oil droplets dispersed in the water are guided by the flow guide layer and discharged through the top opening of the coalescer. The water flows directly to the bottom through the side of the filter material due to gravity, thereby achieving the purpose of efficient oil-water separation. Attached Figure Description
[0031] Figure 1 This is a perspective view of the liquid-liquid separation coalescing filter element that is easy to install according to this utility model;
[0032] Figure 2 This is a side view of the liquid-liquid separation coalescing filter element that is easy to install according to this utility model;
[0033] Figure 3 This is a cross-sectional view of the fixing frame of the liquid-liquid separation coalescing filter element that is easy to install according to this utility model;
[0034] Figure 4 This is a schematic diagram of the locking block of the liquid-liquid separation coalescing filter element that is easy to install according to this utility model;
[0035] Figure 5 This is a schematic diagram of the coalescing filter element mechanism of the liquid-liquid separation coalescing filter element proposed in this utility model, which is easy to install.
[0036] Legend:
[0037] 1. Fixed frame; 2. Coalescing filter element mechanism; 201. Support layer; 202. Coalescing layer one; 203. Coalescing layer two; 204. Guide layer; 205. Connecting frame; 206. Pressure-resistant strip; 3. Mounting shell; 4. Limiting shell; 5. Threaded rod; 6. Knob; 7. End cap; 8. Locking block; 9. Rubber ring; 10. Rectangular groove; 11. Connecting seat; 12. Access shell; 13. Locking groove; 14. Limiting post; 15. Limiting groove; 16. Corner protector shell; 17. Protrusion; 18. Drainage layer; 19. Mounting seat; 20. Mounting groove; 21. Handle; 22. Rubber sleeve. Detailed Implementation
[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0039] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of a liquid-liquid separation coalescing filter element that is easy to install, including a fixed frame 1 and a connecting seat 11. A drainage layer 18 is fixedly connected to the outer wall of the fixed frame 1, through which filtered water droplets can be discharged. End caps 7 are fixedly connected to both the front and rear ends of the fixed frame 1. An installation shell 3 is fixedly connected to the outer wall of the rear end cap 7, through which the filter element can be quickly installed. Limiting shells 4 are fixedly connected to the left and right rear ends of the installation shell 3. A threaded rod 5 is rotatably connected to the inner wall of the limiting shell 4. A knob 6 is fixedly connected to one end of the threaded rod 5, so that the threaded rod 5 can be driven to rotate when the knob 6 is rotated. A locking block 8 is threadedly connected to the outer wall of the threaded rod 5. The front side of the locking block 8 is slidably connected to... The inner wall of the limiting shell 4 allows the threaded rod 5 to synchronously drive the locking block 8 to slide within the limiting shell 4. Rectangular grooves 10 are provided on both the left and right sides of the inner wall of the rear end cover 7. The connecting seat 11 is fixedly connected to the access shell 12. Locking grooves 13 are provided on both the left and right sides of the access shell 12. The front side of the access shell 12 engages with the interior of the rear end cover 7, allowing the locking block 8 to pass through the rectangular groove 10 and engage with the locking groove 13, thereby locking the mounting shell 3 and the connecting seat 11 and achieving a quick installation effect. The adjacent sides of the two locking blocks 8 pass through the corresponding rectangular groove 10 and engage with the corresponding locking groove 13. The front outer wall of the connecting seat 11 is provided with a limiting component, and the inner wall of the fixed frame 1 is provided with a coalescing filter element mechanism 2.
[0040] Specifically, a drainage layer 18 is fixedly connected to the outer wall of the fixed frame 1, which is used to discharge filtered water droplets. End caps 7 are connected to both the front and rear ends of the fixed frame 1. An installation shell 3 is provided on the outer wall of the rear end cap 7, allowing for quick installation of the filter element. Limiting shells 4 are fixed to the left and right rear ends of the installation shell 3. A threaded rod 5 is rotatably connected inside the limiting shell 4. One end of the threaded rod 5 is fixed to a knob 6. Rotating the knob 6 drives the threaded rod 5 to rotate. The outer wall of the threaded rod 5 is threadedly connected to a locking block 8. The front side of the locking block 8 slides on the inner wall of the limiting shell 4, so the threaded rod... The rotation of the grommets 5 can drive the locking blocks 8 to slide within the limiting shell 4. The inner walls of the rear end cover 7 have rectangular slots 10 on the left and right sides. The connecting seat 11 is fixed to the connecting shell 12. The connecting shell 12 has locking slots 13 on the left and right sides. The front side of the connecting shell 12 engages with the interior of the rear end cover 7. When the locking blocks 8 pass through the rectangular slots 10 and engage with the locking slots 13, the mounting shell 3 and the connecting seat 11 are locked, thus achieving the effect of quick installation. Specifically, the adjacent sides of the two locking blocks 8 pass through the corresponding rectangular slots 10 and engage with the corresponding locking slots 13.
[0041] Reference Figure 1 , Figure 3 and Figure 5 The coalescing filter element mechanism 2 includes a support layer 201. The outer wall of the support layer 201 is fixedly connected to the inner wall of the fixed frame 1. The support layer 201 can fix the first coalescing layer 202. The inner wall of the support layer 201 is fixedly connected to the first coalescing layer 202. The inner wall of the first coalescing layer 202 is fixedly connected to the second coalescing layer 203. The first coalescing layer 202 and the second coalescing layer 203 are made of high-density fluoropolymer and fluoropolymer, making it difficult for water and oil liquids to adhere. The inner wall of the second coalescing layer 203 is fixedly connected to the guide layer 204, so that the tiny oil droplets dispersed in the water liquid are guided by the guide layer 204 and discharged by the top opening of the coalescer. The inner wall of the guide layer 204 is fixedly connected to the connecting frame 205.
[0042] Specifically, the outer wall of the support layer 201 is fixedly connected to the inner wall of the fixed frame 1, providing a fixed foundation for the first coalescing layer 202. The inner wall of the support layer 201 is fixedly connected to the first coalescing layer 202, and the inner wall of the first coalescing layer 202 is fixedly connected to the second coalescing layer 203. The first coalescing layer 202 and the second coalescing layer 203 are composed of high-density fluoropolymers and fluoropolymers, which makes it difficult for water and oil liquids to adhere to their surfaces due to the low surface energy of the materials. The inner wall of the second coalescing layer 203 is fixedly connected to the guide layer 204, and the tiny oil droplets dispersed in the water liquid can be discharged through the top opening of the coalescer under the guidance of the guide layer 204. The inner wall of the guide layer 204 is fixed with a connecting frame 205 to enhance the stability and support of the overall structure and ensure that each layer plays a synergistic role in the liquid-liquid separation process.
[0043] Reference Figure 2 , Figure 4 and Figure 5 The limiting component includes multiple limiting posts 14, the rear ends of which are fixedly connected to the four corners of the front side of the connecting seat 11. Limiting grooves 15 are provided at the four corners of the rear side of the mounting shell 3, and the front ends of the limiting posts 14 engage with the limiting grooves 15. The coalescing filter mechanism 2 also includes multiple pressure-resistant strips 206, the adjacent sides of which are fixedly connected at equal intervals to the outer wall of the connecting frame 205. A handle 21 is fixedly connected inside the front mounting shell 3, and a rubber sleeve 22 is fixedly connected to the middle of the handle 21.
[0044] Specifically, the engagement of the limiting post 14 and the limiting groove 15 improves the connection between the mounting shell 3 and the connecting seat 11. The connection of multiple pressure-resistant strips 206 enhances the strength of the connecting frame 205. The rubber sleeve 22 protects the handle 21 when it is in use.
[0045] Reference Figure 1 and Figure 4 Multiple corner protectors 16 are fixedly connected to the outer wall of the mounting shell 3, and the outer walls of the multiple corner protectors 16 are all designed with a smooth surface; multiple protrusions 17 are fixedly connected to the outer walls of the two knobs 6, and rubber rings 9 are fixedly connected to the outer walls of the two locking blocks 8; multiple mounting seats 19 are fixedly connected to the outer wall of the connecting seat 11, and mounting grooves 20 are provided on the front side of the mounting seats 19.
[0046] Specifically, multiple corner protectors 16 protect the outer wall of the mounting shell 3, multiple protrusions 17 improve the anti-slip effect when using the knob 6, and the connecting seat 11 and the mounting groove 20 enable flexible installation of the connecting seat 11.
[0047] Working principle: When installing the filter element, first fix the connecting seat 11 in the corresponding position, so that the front side of the inlet shell 12 inside the connecting seat 11 engages with the inside of the rear end cover 7, completing the initial connection with the bottom end cover 7. Rotate the knob 6, which drives the threaded rod 5 fixedly connected to it to rotate. Since the threaded rod 5 is threadedly connected to the locking block 8, and the front side of the locking block 8 slides on the inner wall of the limiting shell 4, the rotation of the threaded rod 5 can drive the locking block 8 to slide and displace inside the limiting shell 4. When the locking block 8 slides to the rectangular groove 10 penetrating the left and right sides of the inner wall of the rear end cover 7 and engages with the locking groove 13 on the left and right sides of the inlet shell 12, the mounting shell 3 and the connecting seat 11 are connected. The connecting seat 11 is locked, enabling quick installation of the filter element. At the same time, multiple limiting posts 14 and limiting grooves 15 cooperate with each other to further assist in positioning and fixing, ensuring the accuracy and stability of the installation. When disassembling the filter element, the knob 6 is rotated in the opposite direction, causing the threaded rod 5 to drive the locking block 8 to slide in the opposite direction. When the locking block 8 disengages from the locking groove 13 and retracts into the limiting shell 4, the locking state between the mounting shell 3 and the connecting seat 11 is released. Then, the connecting seat 11 is separated from the bottom end cover 7, and the filter element can be disassembled. This structural design effectively improves the efficiency of convenient installation and disassembly of the filter element, thereby improving the working efficiency of the entire device.
[0048] Furthermore, the first coalescing layer 202 is made of high-density fluoropolymer, and the second coalescing layer 203 is made of fluoropolymer. These two materials give the first coalescing layer 202 and the second coalescing layer 203 smooth surfaces, reducing the adhesion of water and oil. When water containing tiny oil droplets enters the filter element, the smooth surface properties of the first coalescing layer 202 and the second coalescing layer 203 reduce the adhesion and retention of the liquid on their surfaces. As the tiny oil droplets pass through the coalescing layers, they gradually coalesce into larger oil droplets. The flow guide layer 204 fixed on the inner wall of the second coalescing layer 203 guides the coalesced oil droplets, causing them to be discharged from the top opening of the coalescer along the guiding direction of the flow guide layer 204. Under the action of gravity, the water flows directly through the side of the filter material to the bottom. The connecting frame 205 is fixed to the inner wall of the flow guide layer 204, enhancing the stability of the flow guide layer 204 and the overall structure, ensuring that each layer works together in the oil-water separation process, and ultimately achieving the goal of efficient oil-water separation.
[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A liquid-liquid separation coalescing filter core easy to install, comprising a fixed skeleton (1) and a connecting seat (11), characterized in that: The outer wall of the fixed skeleton (1) is fixedly connected with a drainage layer (18), the front and rear ends of the fixed skeleton (1) are fixedly connected with end covers (7), the outer wall of the rear end cover (7) is fixedly connected with a mounting shell (3), the rear left and right ends of the mounting shell (3) are fixedly connected with limit shells (4), the inner wall of the limit shell (4) is rotatably connected with a threaded rod (5), one end of the threaded rod (5) is fixedly connected with a rotating knob (6), the outer wall of the threaded rod (5) is threadedly connected with a locking block (8), the front side of the locking block (8) is slidably connected to the inner wall of the limit shell (4), and the inner wall of the rear end cover (7) is provided with a rectangular groove (10) on the left and right sides, the inside of the connecting seat (11) is fixedly connected with an access shell (12), the left and right sides of the access shell (12) are provided with locking grooves (13), and the adjacent sides of the two locking blocks (8) are respectively penetrated through the corresponding rectangular grooves (10) and clamped with the corresponding locking grooves (13). The front outer wall of the connecting seat (11) is provided with a limiting assembly, and the inner wall of the fixed skeleton (1) is provided with a coalescing filter element mechanism (2).
2. The easy-to-install liquid-liquid separation coalescer cartridge of claim 1, wherein: The coalescing filter element mechanism (2) comprises a supporting layer (201), the outer wall of the supporting layer (201) is fixedly connected to the inner wall of the fixed skeleton (1), the inner wall of the supporting layer (201) is fixedly connected with a coalescing layer one (202), the inner wall of the coalescing layer one (202) is fixedly connected with a coalescing layer two (203), the inner wall of the coalescing layer two (203) is fixedly connected with a flow guide layer (204), and the inner wall of the flow guide layer (204) is fixedly connected with a connecting skeleton (205).
3. The easy-to-install liquid-liquid separation coalescer cartridge of claim 1, wherein: The limiting assembly comprises a plurality of limiting columns (14), the rear ends of the plurality of limiting columns (14) are fixedly connected to the four corners of the front side of the connecting seat (11), the rear four corners of the mounting shell (3) are provided with limiting grooves (15), and the front ends of the limiting columns (14) are clamped with the limiting grooves (15).
4. The easy-to-install liquid-liquid separation coalescer cartridge of claim 2, wherein: The coalescing filter element mechanism (2) further comprises a plurality of pressure-resistant strips (206), and the adjacent sides of the plurality of pressure-resistant strips (206) are fixedly connected to the outer wall of the connecting skeleton (205) at equal intervals.
5. The easy-to-install liquid-liquid separation coalescer cartridge of claim 1, wherein: The inside of the front mounting shell (3) is fixedly connected with a handle (21), and the middle of the handle (21) is fixedly connected with a rubber sleeve (22).
6. The easy-to-install liquid-liquid separation coalescer cartridge of claim 1, wherein: The outer wall of the mounting shell (3) is fixedly connected with a plurality of corner protection shells (16), and the outer walls of the plurality of corner protection shells (16) are designed to be smooth.
7. The easy-to-install liquid-liquid separation coalescer cartridge of claim 1, wherein: The outer walls of the two rotating knobs (6) are fixedly connected with a plurality of protrusions (17), and the outer walls of the two locking blocks (8) are fixedly connected with rubber rings (9).
8. The easy-to-install liquid-liquid separation coalescer cartridge of claim 1, wherein: The outer wall of the connecting seat (11) is fixedly connected with a plurality of mounting seats (19), and the front side of the mounting seat (19) is provided with a mounting groove (20).
Citation Information
Patent Citations
Vertical coalescence and separation integrated dehydration unit
CN213643384U