Reverse osmosis ultrafiltration concentrated water closed loop circulation treatment equipment

Abstract

The application provides a RO ultrafiltration concentrated water closed-loop circulation treatment device and relates to the field of RO concentrated water treatment. The device comprises a primary filtration barrel, an upper cover is threadedly connected to the primary filtration barrel, the outer wall of the primary filtration barrel and the outer wall of the upper cover are jointly provided with a locking mechanism, the locking mechanism comprises a connecting ring arranged outside the primary filtration barrel, a rotating groove is formed in the inside of the connecting ring, a rotating ring is rotatably connected to the inside of the rotating groove, two connecting blocks are connected to the rotating ring, a first clamping block is connected to each connecting block, the outer wall of the primary filtration barrel is connected with a fixing ring, the first clamping block is driven to rotate by the rotating ring, the first clamping block is abutted against the bottom surface of the second clamping block, secondary mechanical locking of the primary filtration barrel and the upper cover after thread connection is realized, the design effectively makes up for the defect that the traditional thread connection is easy to loosen, and can resist the influence of water flow impact, vibration and other external forces during equipment operation.

Description

Technical Field

[0001] This utility model relates to the field of RO concentrate treatment, and more specifically, to a closed-loop circulation treatment device for RO ultrafiltration concentrate. Background Technology

[0002] RO (reverse osmosis) ultrafiltration technology is widely used in industrial wastewater treatment and drinking water purification due to its high efficiency in removing pollutants. However, this technology generates a large amount of concentrate during operation, which contains high concentrations of salts, organic matter, and suspended solids. Currently, most treatment systems treat this concentrate by direct discharge or simple dilution before discharge, resulting in serious water waste and potential pollution of the surrounding water environment.

[0003] Considering that the primary filter barrel of the concentrated wastewater closed-loop circulation treatment equipment needs to have its filter rods replaced frequently, the top cover and the barrel body are usually connected by a threaded connection that is easy to disassemble and assemble. However, the traditional structure relies solely on the threaded fit, which cannot effectively prevent the top cover from loosening during equipment operation. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the current traditional structure, which relies solely on threaded fit, cannot effectively prevent the top cover from loosening during equipment operation.

[0005] To achieve the aforementioned objectives and address the aforementioned problems, this utility model provides an RO ultrafiltration concentrate closed-loop circulation treatment device, comprising a primary filter tank with a threaded top cover. A locking mechanism is provided on the outer wall of the primary filter tank and the outer wall of the top cover. The locking mechanism includes a connecting ring disposed outside the primary filter tank, with a rotating groove inside the connecting ring. A rotating ring is rotatably connected inside the rotating groove, and two connecting blocks are connected to the rotating ring. Each connecting block is connected to a first locking block. A fixing ring is connected to the outer wall of the primary filter tank, with the bottom surface of the fixing ring contacting the upper surface of the connecting ring. Two second locking blocks, adapted to the first locking blocks, are connected to the outer wall of the top cover, with the bottom surfaces of the first and second locking blocks contacting each other.

[0006] As a preferred technical solution of this application, the inner bottom wall of the primary filter barrel is connected to a first limiting ring and a second limiting ring, and the bottom surface of the top cover is connected to a third limiting ring. The outer wall of the first limiting ring, the inner wall of the second limiting ring, and the outer wall of the third limiting ring are movably connected to a filter rod.

[0007] As a preferred technical solution of this application, the upper cover is connected to a water inlet pipe, the bottom end of which passes through the upper cover and is connected to the inside of the filter rod. The upper cover is also connected to a water outlet pipe, the bottom end of which passes through the upper cover and is connected to the outside of the filter rod.

[0008] As a preferred technical solution of this application, an RO filter is provided in front of the primary filter tank, and a first concentrate pipe is connected to the side wall of the RO filter. The end of the first concentrate pipe away from the RO filter is connected to a first connecting pipe, and the end of the first connecting pipe away from the first concentrate pipe is connected to the outer surface of the inlet pipe through a quick-connect valve.

[0009] As a preferred technical solution of this application, the end of the water outlet pipe away from the top cover is connected to a second connecting pipe through a quick-connect valve, and the end of the second connecting pipe away from the water outlet pipe is connected to a secondary filter tank through a quick-connect valve.

[0010] As a preferred technical solution of this application, the output end of the secondary filter barrel is connected to a third connecting pipe through a quick-connect valve, and the end of the third connecting pipe away from the secondary filter barrel is connected to a tertiary filter barrel through a quick-connect valve.

[0011] As a preferred technical solution of this application, the bottom surface of the three-stage filter tank is respectively connected to a purified water pipe and a concentrated water pipe. The end of the purified water pipe away from the three-stage filter tank is connected to a fourth connecting pipe through a quick-connect valve. The end of the fourth connecting pipe away from the purified water pipe is connected to the input end of the RO filter through a quick-connect valve.

[0012] As a preferred technical solution of this application, the bottom surfaces of the primary filter barrel, the secondary filter barrel, and the tertiary filter barrel are movably connected to a support frame, and a placement frame adapted to the primary filter barrel, the secondary filter barrel, and the tertiary filter barrel is connected to the support frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] In the scheme of this application:

[0015] 1. The rotating ring drives the first locking block to rotate, causing the bottom surfaces of the first and second locking blocks to fit together and abut against each other. This achieves a secondary mechanical locking after the primary filter barrel and the top cover are threaded together. This design effectively compensates for the shortcomings of traditional threaded connections, which are prone to loosening. It can resist the impact of water flow and vibration during equipment operation, and avoid problems such as water leakage and unstable pressure caused by a loose top cover. This significantly improves the sealing reliability of the filter barrel and the safety of equipment operation. The connecting ring is designed to be larger than the barrel body, providing ample assembly and rotation space for the first and second locking blocks. This avoids interference of the locking block structure with the threaded connection process, ensuring that the threaded engagement and disassembly of the top cover and the barrel body are not affected. It is perfectly suited for the application scenario where the primary filter barrel requires frequent replacement of filter rods.

[0016] 2. By setting the fixing ring, the connecting ring and the barrel body maintain a relatively stable axial position. When the first and second locking blocks are in contact, the supporting effect of the fixing ring on the connecting ring can effectively limit its axial movement, thereby ensuring that the first and second locking blocks always maintain a tight contact state. This avoids problems such as increased locking gap and fixing failure caused by the displacement of the connecting ring, and further enhances the reliability and durability of the secondary locking structure. Attached Figure Description

[0017] Figure 1 A front view of the RO ultrafiltration concentrate closed-loop circulation treatment equipment provided in this application;

[0018] Figure 2 This is a schematic diagram of the internal structure of the primary filter tank in the RO ultrafiltration concentrate closed-loop circulation treatment equipment provided in this application.

[0019] Figure 3 A schematic diagram of the internal structure of the top cover in the RO ultrafiltration concentrate closed-loop circulation treatment equipment provided in this application;

[0020] Figure 4 A schematic diagram of the locking mechanism in the RO ultrafiltration concentrate closed-loop circulation treatment equipment provided in this application;

[0021] Figure 5 This is a bottom view of the RO ultrafiltration concentrate closed-loop circulation treatment equipment provided in this application.

[0022] The image indicates:

[0023] 1. Primary filter tank; 2. Top cover; 3. Locking mechanism; 301. Connecting ring; 302. Rotating groove; 303. Rotating ring; 304. Connecting block; 305. First locking block; 306. Fixing ring; 307. Second locking block; 4. First limiting ring; 5. Second limiting ring; 6. Filter rod; 7. Third limiting ring; 8. Inlet pipe; 9. Outlet pipe; 10. RO filter; 11. First connecting pipe; 12. Second connecting pipe; 13. Secondary filter tank; 14. Third connecting pipe; 15. Tertiary filter tank; 16. Clean water pipe; 17. Second concentrate pipe; 18. Fourth connecting pipe; 19. First concentrate pipe; 20. Support frame; 21. Placement frame. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Example 1

[0029] Please refer to Figure 1 , Figure 3 The RO ultrafiltration concentrate closed-loop circulation treatment equipment includes a primary filter tank 1, with a top cover 2 threadedly connected to the primary filter tank 1. A locking mechanism 3 is provided on the outer walls of both the primary filter tank 1 and the top cover 2. The locking mechanism 3 includes a connecting ring 301 located outside the primary filter tank 1. The connecting ring 301 is designed to be larger than the body of the primary filter tank 1, providing sufficient space for the first locking block 305 and the second locking block 307 on the outer wall of the top cover 2. This avoids interference between the locking block structure and the threaded connection points of the tank body and the top cover 2, ensuring that the screwing, unscrewing, and locking operations of the top cover 2 do not affect each other. A rotating groove 302 is provided inside the connecting ring 301, and a rotating ring 303 is rotatably connected inside the rotating groove 302. Two connecting blocks 304 are connected to the top of the cover 3. Each connecting block 304 is connected to a first locking block 305. A fixing ring 306 is connected to the outer wall of the primary filter barrel 1. The fixing ring 306 is connected to the outer wall of the primary filter barrel 1. Its close fit with the connecting ring 301 can keep the connecting ring 301 and the primary filter barrel 1 in a relatively stable axial position, and prevent the connecting ring 301 from shifting irregularly during the operation of the equipment. It provides stable support for the subsequent action of the locking mechanism 3. The bottom surface of the fixing ring 306 is in contact with the upper surface of the connecting ring 301. Two second locking blocks 307 that are adapted to the first locking block 305 are connected to the outer wall of the top cover 2. The bottom surface of the first locking block 305 is in contact with the bottom surface of the second locking block 307.

[0030] Furthermore, such as Figure 2 , Figure 3As shown, the inner bottom wall of the primary filter tank 1 is connected to a first limiting ring 4 and a second limiting ring 5, and the bottom surface of the top cover 2 is connected to a third limiting ring 7. The outer wall of the first limiting ring 4, the inner wall of the second limiting ring 5, and the outer wall of the third limiting ring 7 are movably connected to the filter rod 6. The concentrated water produced by the RO filter 10 is transported to the inlet pipe 8 through the first concentrated water pipe 19 and the first connecting pipe 11. The bottom end of the inlet pipe 8 passes through the top cover 2 and is directly connected to the inside of the filter rod 6, so as to accurately guide the concentrated water into the cavity of the filter rod 6, avoid the concentrated water from contacting the internal space of the primary filter tank 1, and keep the tank wall as clean as possible.

[0031] Furthermore, Figure 2 , Figure 3 As shown, the upper cover 2 is connected to a water inlet pipe 8. The bottom end of the water inlet pipe 8 passes through the upper cover 2 and is connected to the inside of the filter rod 6. The upper cover 2 is connected to a water outlet pipe 9. The bottom end of the water outlet pipe 9 passes through the upper cover 2 and is connected to the outside of the filter rod 6.

[0032] Example 2

[0033] The RO ultrafiltration concentrate closed-loop circulation treatment equipment provided in Example 1 is further optimized, specifically, as follows: Figure 1 As shown, an RO filter 10 is installed in front of the primary filter tank 1. A first concentrate pipe 19 is connected to the side wall of the RO filter 10. The end of the first concentrate pipe 19 away from the RO filter 10 is connected to a first connecting pipe 11. The end of the first connecting pipe 11 away from the first concentrate pipe 19 is connected to the outer surface of the inlet pipe 8 through a quick-connect valve.

[0034] Furthermore, such as Figure 1 As shown, the end of the outlet pipe 9 furthest from the top cover 2 is connected to the second connecting pipe 12 via a quick-connect valve. The end of the second connecting pipe 12 furthest from the outlet pipe 9 is connected to the secondary filter tank 13 via a quick-connect valve. The secondary filter tank 13 is the core unit in the multi-stage filtration process of the equipment, which connects the upper and lower stages. It receives the concentrated water after the primary filter tank 1 removes large particles of impurities through the second connecting pipe 12. It uses built-in filter media to specifically adsorb odors, organic matter, and trap small molecule colloids and some heavy metal ions, further reducing the pollution load. Then, the purified concentrated water is stably transported to the tertiary filter tank 15 through the third connecting pipe 14. This not only provides qualified inlet water for subsequent deep treatment to ensure filtration accuracy, but also reduces the scaling and clogging of the core components of the tertiary filter and the frequency of backwashing by sharing the pollutant treatment pressure, thus extending the equipment life.

[0035] Furthermore, such as Figure 1 As shown, the output end of the secondary filter barrel 13 is connected to the third connecting pipe 14 through a quick-connect valve, and the end of the third connecting pipe 14 away from the secondary filter barrel 13 is connected to the tertiary filter barrel 15 through a quick-connect valve.

[0036] Furthermore, such as Figure 1As shown, the bottom surface of the three-stage filter tank 15 is connected to a purified water pipe 16 and a second concentrated water pipe 17. The end of the purified water pipe 16 away from the three-stage filter tank 15 is connected to a fourth connecting pipe 18 through a quick-connect valve. The end of the fourth connecting pipe 18 away from the purified water pipe 16 is connected to the input end of the RO filter 10 through a quick-connect valve. The end of the second concentrated water pipe 17 needs to be connected to external terminal equipment to realize diversified treatment of concentrated water according to actual needs. It is a bridge between the equipment treatment link and the terminal utilization or discharge link.

[0037] Furthermore, such as Figure 1 , Figure 5 As shown, the bottom surfaces of the primary filter 1, the secondary filter 13, and the tertiary filter 15 are movably connected to a support frame 20. The support frame 20 is connected to a placement frame 21 that is compatible with the primary filter 1, the secondary filter 13, and the tertiary filter 15. The placement frame 21 is a dedicated positioning component on the support frame 20 that is compatible with the primary filter 1, the secondary filter 13, and the tertiary filter 15. Its core function is to provide a reliable installation foundation for each stage of the filtration unit through precise positioning and stable load bearing, thereby ensuring the safety and stability of the overall operation and maintenance of the equipment.

[0038] The usage process of the RO ultrafiltration concentrate closed-loop circulation treatment equipment provided by this utility model is as follows:

[0039] First, connect the external concentrate treatment equipment to the second concentrate pipe 17 on the bottom of the tertiary filter tank 15. Then, unscrew the top cover 2 on the primary filter tank 1 and place the filter rod 6 inside the primary filter tank 1, so that the outer wall of the filter rod 6 is in contact with the inner wall of the second limiting ring 5, and the inner wall is in contact with the outer wall of the first limiting ring 4. When closing the top cover 2, ensure that the third limiting ring 7 on the bottom surface of the top cover 2 is fitted onto the outer wall of the top of the filter rod 6. After tightening the top cover 2 by screwing it on, rotate the rotating ring 303 of the locking mechanism 3 to drive the connecting block 304 and the first locking block 305 to rotate, so that the bottom surface of the first locking block 305 is in contact with the bottom surface of the second locking block 307 on the outer wall of the top cover 2. With the support and limitation of the connecting ring 301 by the fixing ring 306, the top cover 2 and the primary filter tank 1 are locked together again. The concentrate produced by the RO filter 10 is then passed through the first... The concentrated water pipe 19 and the first connecting pipe 11 are delivered to the inlet pipe 8, and the concentrated water is injected into the filter rod 6 from the bottom of the inlet pipe 8. The concentrated water permeates and filters inside the filter rod 6, removing suspended solids, colloids and other large particulate impurities. It then flows out from the outside of the filter rod 6 and enters the secondary filter tank 13 through the outlet pipe 9 and the second connecting pipe 12. At this stage, the first limiting ring 4, the second limiting ring 5 and the third limiting ring 7 together restrict the position of the filter rod 6 to prevent displacement caused by water flow impact. The concentrated water entering the secondary filter tank 13 is further purified to remove organic matter and some ions. It then enters the tertiary filter tank 15 through the third connecting pipe 14 for deep concentration and separation, achieving efficient removal of salts and trace pollutants. The purified water treated in the tertiary filter tank 15 is returned to the input end of the RO filter 10 through the purified water pipe 16 and the fourth connecting pipe 18.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this 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 specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. An RO ultrafiltration concentrate closed-loop circulation treatment equipment, characterized in that, The system includes a primary filter barrel (1), on which a top cover (2) is threadedly connected. A locking mechanism (3) is provided on the outer wall of the primary filter barrel (1) and the outer wall of the top cover (2). The locking mechanism (3) includes a connecting ring (301) located outside the primary filter barrel (1). A rotating groove (302) is provided inside the connecting ring (301). A rotating ring (303) is rotatably connected inside the rotating groove (302). The rotating ring (303) has... Two connecting blocks (304) are connected, and a first locking block (305) is connected to each connecting block (304). A fixing ring (306) is connected to the outer wall of the primary filter barrel (1). The bottom surface of the fixing ring (306) is in contact with the upper surface of the connecting ring (301). Two second locking blocks (307) that are adapted to the first locking block (305) are connected to the outer wall of the top cover (2). The bottom surface of the first locking block (305) is in contact with the bottom surface of the second locking block (307).

2. The RO ultrafiltration concentrate closed-loop circulation treatment equipment according to claim 1, characterized in that, The inner bottom wall of the primary filter barrel (1) is connected to a first limiting ring (4) and a second limiting ring (5), and the bottom surface of the upper cover (2) is connected to a third limiting ring (7). The outer wall of the first limiting ring (4), the inner wall of the second limiting ring (5) and the outer wall of the third limiting ring (7) are movably connected to a filter rod (6).

3. The RO ultrafiltration concentrate closed-loop circulation treatment equipment according to claim 2, characterized in that, The upper cover (2) is connected to a water inlet pipe (8), the bottom end of which passes through the upper cover (2) and is connected to the inside of the filter rod (6). The upper cover (2) is connected to a water outlet pipe (9), the bottom end of which passes through the upper cover (2) and is connected to the outside of the filter rod (6).

4. The RO ultrafiltration concentrate closed-loop circulation treatment equipment according to claim 1, characterized in that, An RO filter (10) is provided in front of the primary filter tank (1). The side wall of the RO filter (10) is connected to a first concentrate pipe (19). The end of the first concentrate pipe (19) away from the RO filter (10) is connected to a first connecting pipe (11). The end of the first connecting pipe (11) away from the first concentrate pipe (19) is connected to the outer surface of the inlet pipe (8) through a quick-connect valve.

5. The RO ultrafiltration concentrate closed-loop circulation treatment equipment according to claim 3, characterized in that, The end of the water outlet pipe (9) away from the top cover (2) is connected to a second connecting pipe (12) via a quick-connect valve, and the end of the second connecting pipe (12) away from the water outlet pipe (9) is connected to a secondary filter tank (13) via a quick-connect valve.

6. The RO ultrafiltration concentrate closed-loop circulation treatment equipment according to claim 5, characterized in that, The output end of the secondary filter barrel (13) is connected to a third connecting pipe (14) via a quick-connect valve, and the end of the third connecting pipe (14) away from the secondary filter barrel (13) is connected to a tertiary filter barrel (15) via a quick-connect valve.

7. The RO ultrafiltration concentrate closed-loop circulation treatment equipment according to claim 6, characterized in that, The bottom surface of the three-stage filter tank (15) is connected to a purified water pipe (16) and a second concentrated water pipe (17). The end of the purified water pipe (16) away from the three-stage filter tank (15) is connected to a fourth connecting pipe (18) through a quick-connect valve. The end of the fourth connecting pipe (18) away from the purified water pipe (16) is connected to the input end of the RO filter (10) through a quick-connect valve.

8. The RO ultrafiltration concentrate closed-loop circulation treatment equipment according to claim 1, characterized in that, The bottom surfaces of the primary filter barrel (1), the secondary filter barrel (13), and the tertiary filter barrel (15) are movably connected to a support frame (20), and a placement frame (21) adapted to the primary filter barrel (1), the secondary filter barrel (13), and the tertiary filter barrel (15) is connected to the support frame (20).

Images