Reverse osmosis filter assembly and water purification equipment

Abstract

The utility model discloses a reverse osmosis filter assembly and water purification equipment, and relates to the technical field of water purification equipment, the reverse osmosis filter assembly comprises a filter bottle, a reverse osmosis filter element and a central pipe, the filter bottle is provided with an upper end and a lower end, and the upper end of the filter bottle is provided with a water inlet, a water outlet and a wastewater port; the reverse osmosis filter element is arranged in the filter bottle, and a sealing layer is wrapped outside the reverse osmosis filter element; according to the technical scheme, the central pipe is provided with the water outlet flow channel and the wastewater flow channel which are separated from each other, and the water outlet flow channel and the wastewater flow channel are respectively used for discharging pure water and wastewater filtered by the reverse osmosis filter element, so that a wastewater flow path which is originally positioned on the inner side of the reverse osmosis filter element can be moved to the central pipe; therefore, mutual interference between a wastewater flow path and a raw water path of the reverse osmosis filter element is avoided, and the pure water outlet efficiency of the reverse osmosis filter element is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, and particularly relates to a reverse osmosis filtration component and a water purification equipment. Background Art

[0002] With the pursuit of the public for the quality of life, the level of water quality has begun to attract much attention. The water purification equipment with reverse osmosis function is more and more popular among the public because the purified water produced by it is fresher, more hygienic and safer. The raw water usually has a high TDS. Under the action of a booster pump, the reverse osmosis filter element can block a large number of ions in the raw water in front of the permeation membrane, and then discharge a large number of ions out of the permeation membrane through the waste water, so that the TDS of the water passing through the permeation membrane meets the standard of drinking water. At present, the pure water waterway and the waste water waterway of the existing reverse osmosis filter element are both concentrated at a position close to the inner side of the reverse osmosis filter element, which will cause cross-contamination between the waste water and the raw water. Summary of the Utility Model

[0003] The main purpose of the utility model is to provide a reverse osmosis filtration component and a water purification equipment, aiming to improve the waste water flow path of the reverse osmosis filter element.

[0004] To achieve the above purpose, the reverse osmosis filtration component proposed by the utility model includes:

[0005] A filter bottle, which has an upper end and a lower end, and an inlet, an outlet and a waste water outlet are opened at the upper end of the filter bottle;

[0006] A reverse osmosis filter element, which is arranged in the filter bottle, and a sealing layer is wrapped outside the reverse osmosis filter element, and a water flow passage is formed between the outer periphery of the reverse osmosis filter element and the filter bottle;

[0007] A central tube, the reverse osmosis filter element is sleeved on the central tube, and a partition plate extending along the axial direction of the central tube is arranged in the central tube to divide the inside of the central tube into a waste water flow passage and a water outlet flow passage. A plurality of flow holes are opened in the central tube, and the flow holes respectively communicate the pure water side of the reverse osmosis filter element and the water outlet flow passage;

[0008] Wherein, the water outlet flow passage is communicated with the outlet through the water flow passage, and the waste water side of the reverse osmosis filter element is communicated with the waste water outlet through the waste water flow passage.

[0009] In one embodiment, a through hole is opened at the lower end of the central tube, and the waste water side of the reverse osmosis filter element is communicated with the waste water flow passage through the through hole.

[0010] In one embodiment, a plurality of diversion grooves are opened on the outer wall of the central tube, and the plurality of diversion grooves are arranged at intervals in the axial direction of the central tube. A plurality of flow holes are respectively opened on the groove walls of the plurality of diversion grooves, and the diversion grooves are communicated with the water outlet flow passage through the flow holes.

[0011] In one embodiment, the diversion channel is arranged as an annular channel.

[0012] In one embodiment, the central tube includes a main tube portion and a connector. The connector is connected to the lower end of the main tube portion. The connector is provided with a first diversion channel, and the water outlet channel communicates with the water passing channel through the first diversion channel.

[0013] In one embodiment, the connector includes a connecting platform and a first extension section connected to the connecting platform. The connecting platform is respectively connected to the main tube portion and the partition plate. The connecting platform is provided with an inlet of the first diversion channel at a position corresponding to the water passing channel.

[0014] In one embodiment, the reverse osmosis filter element further includes a first filter element cover. The first filter element cover is connected to the lower end of the reverse osmosis filter element. The first filter element cover is provided with a socket for the first extension section to extend into. A first sealing ring is arranged between the first extension section and the first filter element cover.

[0015] In one embodiment, a water passing gap is formed between the lower end of the first filter element cover and the filter bottle. The first diversion channel communicates with the water passing channel through the water passing gap.

[0016] In one embodiment, the reverse osmosis filter element filtering assembly includes a second filter element cover. The second filter element cover is adhesively connected to the upper end of the reverse osmosis filter element. The second filter element cover is provided with a second diversion channel. The waste water channel communicates with the waste water outlet through the second diversion channel. A blocking block is arranged at one end of the water outlet channel close to the second diversion channel. The blocking block is used to separate the water outlet channel and the second diversion channel.

[0017] In one embodiment, the second filter element cover extends towards the central tube to form a second extension section. The second diversion channel is located in the second extension section. The second extension section is inserted into the central tube, and a second sealing ring is arranged between the second extension section and the central tube.

[0018] The present utility model also provides a water purification device, which includes a reverse osmosis filtration component. The reverse osmosis filtration component includes a filter bottle, a reverse osmosis filter element, and a central tube. The filter bottle has an upper end and a lower end. An inlet, an outlet, and a wastewater outlet are provided at the upper end of the filter bottle. The reverse osmosis filter element is arranged inside the filter bottle, and a sealing layer is wrapped around the reverse osmosis filter element. A water flow channel is formed between the outer circumference of the reverse osmosis filter element and the filter bottle. The reverse osmosis filter element is sleeved on the central tube, and a partition extending along the axial direction of the central tube is arranged inside the central tube to divide the inside of the central tube into a wastewater flow channel and a water outlet flow channel. A plurality of flow holes are provided on the central tube, and the flow holes respectively communicate the pure water side of the reverse osmosis filter element and the water outlet flow channel. Among them, the water outlet flow channel is communicated with the outlet through the water flow channel, and the wastewater side of the reverse osmosis filter element is communicated with the wastewater outlet through the wastewater flow channel.

[0019] The technical solution of the present utility model adopts a central tube with a separately partitioned water outlet flow channel and a wastewater flow channel. The water outlet flow channel and the wastewater flow channel are respectively used to discharge the pure water and wastewater filtered by the reverse osmosis filter element. In this way, the original wastewater flow path located inside the reverse osmosis filter element can be moved to the central tube, thereby avoiding the mutual interference between the wastewater flow path and the raw water water path of the reverse osmosis filter element, and thus improving the pure water outlet efficiency of the reverse osmosis filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0021] Figure 1 is a schematic structural diagram of the reverse osmosis filtration component proposed by the present utility model;

[0022] Figure 2 is Figure 1 an exploded view of;

[0023] Figure 3 is a schematic structural diagram of the reverse osmosis filtration component from a certain sectional view;

[0024] Figure 4 is Figure 3 an enlarged view of part A in;

[0025] Figure 5 is Figure 3 an enlarged view of part B in;

[0026] Figure 6 is a schematic structural diagram of the central tube;

[0027] Figure 7 It is a schematic structural diagram of the central pipe from a certain sectional view;

[0028] Figure 8 It is a schematic separation diagram of the structures of the first filter element cover, the second filter element cover, the reverse osmosis filter element, and the central pipe.

[0029] Explanation of the reference numerals in the drawings:

[0030] 100, reverse osmosis filtration assembly; 1, filter bottle; 11, bottle body; 12, top cover; 121, water inlet; 122, water outlet; 123, wastewater outlet; 13, bottom cover; 2, reverse osmosis filter element; 21, pure water side; 22, wastewater side; 3, central pipe; 3a, water outlet flow channel; 3b, wastewater flow channel; 31, main pipe part; 311, flow-through hole; 312, diversion groove; 32, connector; 321, through-flow hole; 322, first diversion channel; 323, connection platform; 324, first extension section; 33, baffle; 34, stop block; 4, first filter element cover; 41, socket; 411, first accommodation groove; 5, second filter element cover; 5a, second diversion channel; 51, second extension section; 511, second accommodation groove; 61, first sealing ring; 62, second sealing ring; 71, water flow-through channel; 72, water passing gap.

[0031] The realization of the purpose, functional features, and advantages of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] With the public's pursuit of the quality of life, the level of water quality has begun to attract much attention. Water purification equipment with reverse osmosis function is becoming more and more popular among the public because the purified water produced by it is fresher, more hygienic and safer. Raw water usually has a high TDS. Under the action of a booster pump, the reverse osmosis filter element can block a large number of ions in the raw water in front of the permeable membrane, and then discharge a large number of ions through the wastewater from the permeable membrane, so that the TDS of the water passing through the permeable membrane meets the standard of drinking water. At present, the pure water waterway and the wastewater waterway of the existing reverse osmosis filter element are both concentrated in the position close to the inner side of the reverse osmosis filter element, which will cause cross-contamination between the wastewater and the raw water.

[0036] The aforementioned TDS refers to Total Dissolved Solids (English: Total dissolved solids, abbreviated as TDS), also known as the total amount of dissolved solids, and the measurement unit is milligrams per liter (mg / L), which indicates how many milligrams of dissolved solids are dissolved in 1 liter of water. The higher the TDS value, the more dissolved substances are contained in the water.

[0037] In view of this, the present utility model proposes a reverse osmosis filtration assembly 100, which is used to be installed in a water purification device to filter the raw water passing through it, so that after the water quality meets the needs of users, the raw water waterway, the wastewater waterway and the water outlet waterway of the reverse osmosis filter element 2 are arranged more reasonably to prevent cross-contamination between the waterways.

[0038] Please refer to Figures 1 to 3, in an embodiment of the present utility model, the reverse osmosis filtration assembly 100 includes a filter bottle 1, a reverse osmosis filter element 2, and a central tube 3. The filter bottle 1 has an upper end and a lower end. An inlet 121, an outlet 122, and a wastewater outlet 123 are provided at the upper end of the filter bottle 1. The reverse osmosis filter element 2 is disposed inside the filter bottle 1, and a sealing layer is wrapped around the reverse osmosis filter element 2. A water flow passage 71 is formed between the outer periphery of the reverse osmosis filter element 2 and the filter bottle 1. The reverse osmosis filter element 2 is sleeved on the central tube 3. A partition extending along the axial direction of the central tube 3 is provided inside the central tube 3 to divide the inside of the central tube 3 into a wastewater flow passage 3b and a water outlet flow passage 3a. A plurality of flow holes 311 are formed in the central tube 3, and the flow holes 311 communicate with the pure water side 21 of the reverse osmosis filter element 2 and the water outlet flow passage 3a respectively. A through hole 321 is provided at the lower end of the central tube 3, and the wastewater side 22 of the reverse osmosis filter element 2 communicates with the wastewater flow passage 3b through the through hole 321. Wherein, the water outlet flow passage 3a communicates with the outlet 122 through the water flow passage 71, and the through hole 321 communicates with the wastewater outlet 123 through the wastewater flow passage 3b.

[0039] It should be noted that the positional relationship shown in the schematic diagram of the specification is only the position of the reverse osmosis filtration assembly 100 in a certain state. The installation method of the reverse osmosis filtration assembly 100 is to be installed on the water circuit board along the axial direction of the filter bottle 1. In other embodiments, the installation method of this product can also be vertically installed on the water circuit board. Among them, a receiving cavity is formed inside the filter bottle 1 for receiving the reverse osmosis filter element 2 and other components of the reverse osmosis filtration assembly 100 to ensure that the reverse osmosis filtration assembly 100 is not interfered by the outside world. The filter bottle 1 is only connected to the outside through the inlet 121, the outlet 122, and the wastewater outlet 123. The inlet 121 is a water inlet for allowing raw water (tap water or water filtered by a pre-filter element) from the outside to flow in. The wastewater outlet 123 is used to discharge wastewater carrying a large amount of salt ions after being filtered by the reverse osmosis filter element 2. The outlet 122 is used to discharge pure water (with a lower salt ion concentration) after reverse osmosis filtration. Among them, in this embodiment, the filter bottle 1 includes a bottle body 11 in a hollow cylindrical shape. A top cover 12 and a bottom cover 13 are respectively provided at both ends of the bottle body 11 to block the openings at both ends of the bottle body 11. Among them, the top cover 12 and the bottle body 11 can be glued or welded, and no specific limitation is made here. The bottom cover 13 and the bottle body 11 are fixed together by a rotary welding method, thereby enhancing the overall structural strength of the filter bottle 1.

[0040] Among them, regulating valves are provided in the water inlet 121, water outlet 122 and waste water outlet 123, and the opening degrees of the water inlet 121, water outlet 122 and waste water outlet 123 can be adjusted through the regulating valves. Of course, the regulating valves can also be respectively arranged in the external water circuits connected to the water inlet 121, water outlet 122 and waste water outlet 123 to meet the actual operation requirements of the water purification equipment. The filter bottle 1 proposed by the present utility model has two ends in its axial direction. The end of the filter bottle 1 where the water inlet 121, water outlet 122 and waste water outlet 123 are opened is the upper end of the filter bottle 1, and the opposite end of the filter bottle 1 is the lower end of the filter bottle 1.

[0041] Specifically, the reverse osmosis filter element 2 is arranged in a hollow cylindrical shape. The reverse osmosis filter element 2 is made by a rolling process, making it easy for water flow to pass through the axial space of the reverse osmosis filter element 2. When the water flow passes through the reverse osmosis filter element 2 in the radial direction, it needs to pass through the RO membrane of the reverse osmosis filter element 2, thereby filtering the salt ions in the water outside the RO membrane. A central tube 3 is arranged inside the reverse osmosis filter element 2. The central tube 3 can support the inside of the reverse osmosis filter element 2, prevent the reverse osmosis filter element 2 from deforming due to large water pressure, and thus ensure the smooth water outlet path of the reverse osmosis filter element 2. The reverse osmosis filter element 2 has a pure water side 21 and a waste water side 22. The pure water side 21 is the position where the filtered pure water flows out of the reverse osmosis filter element 2. The pure water side 21 of the reverse osmosis filter element 2 is located inside the reverse osmosis filter element 2. The waste water side 22 is the position where the waste water containing high-concentration salt ions flows out after filtration by the reverse osmosis filter element 2. The waste water side 22 of the reverse osmosis filter element 2 is located at the lower end of the reverse osmosis filter element 2.

[0042] Further, please refer to Figure 3 、 Figure 6 and Figure 7 . The central tube 3 has two mutually separated flow channels, namely a waste water flow channel 3b and a water outlet flow channel 3a. In this embodiment, the waste water flow channel 3b and the water outlet flow channel 3a are separated by a partition. In other embodiments, the waste water flow channel 3b and the water outlet flow channel 3a can also be separated by a partition cylinder.

[0043] Among them, the water outlet flow channel 3a is connected to the pure water side 21 of the reverse osmosis filter element 2. The pure water filtered by the reverse osmosis filter element 2 is discharged from the water outlet 122 through the water outlet flow channel 3a, and then flows into the next-stage filter element or to the faucet at the user end. The part of the raw water except for the pure water is taken as waste water carrying a large amount of salt ions and flows through the waste water flow channel 3b and then is discharged from the waste water outlet 123. Among them, through holes 311 are provided at the positions of the central tube 3 corresponding to the pure water flow channels. There are multiple through holes 311, and the multiple through holes 311 are arranged at intervals in the axial direction of the central tube 3, thereby improving the efficiency of separating pure water in the water outlet flow channel 3a.

[0044] Specifically, a flow-through hole 321 is formed at the lower end of the central pipe 3, so that the raw water entering the reverse osmosis filter element 2 flows axially through the reverse osmosis filter element 2, taking away the high-concentration salt ions therein, and then flowing into the waste water flow channel 3b from the lower end of the central pipe 3, thereby avoiding interference with the water path for filtering the raw water into pure water, and improving the water purification efficiency of the reverse osmosis filtration assembly 100.

[0045] The technical solution of the present utility model adopts a central pipe 3 provided with a water outlet flow channel 3a and a waste water flow channel 3b which are separated from each other, wherein the water outlet flow channel 3a and the waste water flow channel 3b are respectively used for discharging the pure water and the waste water filtered by the reverse osmosis filter element 2. In this way, the waste water flow path originally located inside the reverse osmosis filter element 2 can be moved to the central pipe 3, thereby avoiding interference between the waste water flow path and the raw water water path of the reverse osmosis filter element 2, and thus improving the pure water outlet efficiency of the reverse osmosis filter element 2.

[0046] In one embodiment, please refer to Figure 6 and Figure 7 , a plurality of diversion grooves 312 are formed on the outer wall of the central pipe 3, the plurality of diversion grooves 312 are arranged at intervals in the axial direction of the central pipe 3, a plurality of flow-through holes 311 are respectively formed on the groove walls of the plurality of diversion grooves 312, and the diversion grooves 312 are communicated with the water outlet flow channel 3a through the flow-through holes 311.

[0047] Considering that in this embodiment, the flow-through holes 311 are only formed on the same axial path of the central pipe 3, so the pure water outlet efficiency is relatively low. In order to further improve the pure water outlet efficiency, diversion grooves 312 are formed corresponding to the positions of the water outlet holes, so that the water in the water outlet side of the reverse osmosis filter element 2 first gathers in the diversion grooves 312 and then flows into the water outlet flow channel 3a through the water holes. In view of this, the pure water outlet rate of the reverse osmosis filter element 2 is improved. It should be noted that the diversion grooves 312 are formed on the outer wall of the central pipe 3, and they can be annular or in the shape of a ring with a break, and no specific limitation is made here.

[0048] In one embodiment, please continue to refer to Figure 6 and Figure 7 , the diversion groove 312 is arranged as an annular groove.

[0049] According to the previous embodiment, the diversion groove 312 is arranged in a ring shape, that is, the water flow in the circumferential direction of the water outlet pipe can flow in the diversion groove 312 and then converge at the water passing opening and flow into the water outlet flow channel 3a. Compared with setting the diversion groove 312 as a ring with a break or other shapes, the reverse osmosis filter element 2 in this embodiment has a better pure water outlet rate.

[0050] In one embodiment, please refer to Figure 4 , Figure 6 andFigure 7 , the central pipe 3 includes a main pipe portion 31 and a connector 32. The connector 32 is connected to the lower end of the main pipe portion 31. The connector 32 is provided with a first diversion channel 322, and the water outlet channel 3a communicates with the water passing channel 71 through the first diversion channel 322.

[0051] Specifically, the central pipe 3 at least includes a main pipe portion 31 and a connector 32. Among them, the main pipe portion 31 and the connector 32 can be integrally formed, or they can be formed separately and then connected together. Considering that the structure of the connector 32 is relatively complex and it is difficult to integrally form with the main pipe portion 31, in this embodiment, the connector 32 and the main pipe portion 31 are connected together by welding. Among them, by welding the connector 32 to the inner wall of the main pipe portion 31 and the baffle 33 respectively, the lower ends of the waste water channel 3b and the water outlet channel 3a are separated from each other without interference, ensuring the quality of pure water. A first diversion channel 322 is provided in the connector 32, so that the water in the water outlet channel 3a can flow out through the connector 32 and then flow into the water outlet 122 through the water passing channel 71.

[0052] In one embodiment, please continue to refer to Figure 4 , Figure 6 and Figure 7 , the connector 32 includes a connecting platform 323 and a first extension section 324 connected to the connecting platform 323. The connecting platform 323 is respectively connected to the main pipe portion 31 and the partition plate. The connecting platform 323 is provided with an inlet of the first diversion channel 322 at a position corresponding to the water passing channel 71.

[0053] It should be noted that considering that the connector 32 includes a connector 32 for welding to the inner wall of the main pipe portion 31 and the baffle 33 and a first extension section 324 for diversion, and the through-hole 321 in the above embodiment is provided in the connecting platform 323, the waste water side 22 of the reverse osmosis filter element 2 can communicate with the waste water channel 3b.

[0054] In one embodiment, please refer to Figure 4 , the reverse osmosis filter element 2 further includes a first filter element cover 4. The first filter element cover 4 is connected to the lower end of the reverse osmosis filter element 2. The first filter element cover 4 is provided with a socket 41 for the first extension section 324 to extend into. A first sealing ring 61 is provided between the first extension section 324 and the first filter element cover 4.

[0055] It is considered that in order to prevent the water outlet channel 3a from being interfered by the outside world, a first sealing ring 61 is used to seal the connection between the first extension section 324 and the socket 41, so as to ensure that the water in the first diversion channel 322 will not cross-contaminate the waste water in the filter element. Further, a first accommodation groove 411 is formed on the inner wall of the socket 41 for accommodating the first sealing ring 61, and the first sealing ring 61 partially protrudes from the first accommodation groove 411, so as to form an interference fit with the first extension section 324 to achieve a sealing effect.

[0056] In one embodiment, please refer to Figure 4 , a water passing gap 72 is formed between the lower end of the first filter element cover 4 and the filter bottle 1, and the first diversion channel 322 communicates with the water passing channel 71 through the water passing gap 72.

[0057] It should be noted that a water passing gap 72 is formed between the lower end of the first filter element cover 4 and the filter bottle 1. The water in the first diversion channel 322 is introduced into the water passing gap 72 through this water passing gap 72. It should be noted that the outer side of the first filter element is wrapped with a sealing layer, which can prevent the water in the water passing gap 72 and the water passing channel 71 from flowing into the reverse osmosis filter element 2, ensuring that the water outlet path of pure water will not interfere with the raw water path and the waste water outlet path.

[0058] In one embodiment, please refer to Figure 5 , the reverse osmosis filter element 2 filtering assembly includes a second filter element cover 5, the second filter element cover 5 is glued to the upper end of the reverse osmosis filter element 2, the second filter element cover 5 is provided with a second diversion channel 5a, the waste water channel 3b communicates with the waste water outlet 123 through the second diversion channel 5a, and a baffle 34 is arranged at one end of the water outlet channel 3a close to the second diversion channel 5a, and the baffle 34 is used to separate the water outlet channel 3a and the second diversion channel 5a.

[0059] More specifically, the first filter element cover 4 is arranged at the lower end of the reverse osmosis filtration assembly 100. Correspondingly, the second filter element cover 5 is arranged at the upper end of the reverse osmosis filtration assembly 100. The second filter element cover 5 is also glued to the reverse osmosis filter element 2, and the second filter element cover 5 has an outer peripheral extension part, and the outer peripheral extension part of the second filter element cover 5 is also glued to the outer periphery of the reverse osmosis filter element 2 to maintain the state of the reverse osmosis filter element 2 in the filtration mode. Among them, the second filter element cover 5 is provided with a second diversion channel 5a so that the waste water can flow into the waste water outlet 123 through the second filter element cover 5. In order to prevent the upper ends of the water outlet path and the waste water path from interfering with each other, a baffle 34 is arranged at a position where the water outlet channel 3a is close to the second diversion channel 5a, and the water outlet channel 3a and the second diversion channel 5a are separated by the baffle 34.

[0060] In one embodiment, please continue to refer to Figure 5, the second filter element cover 5 extends towards the central tube 3 to form a second extension section 51. The second diversion channel 5a is located within the second extension section 51. The second extension section 51 is inserted into the central tube 3, and a second sealing ring 62 is provided between the second extension section 51 and the central tube 3.

[0061] Specifically, the second filter element cover 5 is provided with a second extension section 51 that is sealingly fitted with the central tube 3. A sealing fit is formed between the outer wall of the second extension section 51 and the inner wall of the central tube 3 to prevent wastewater from overflowing. More specifically, a second accommodation groove 511 is formed on the outer wall of the second extension section 51, enabling the second sealing ring 62 to be partially accommodated within the second accommodation groove 511. Another part of the second sealing ring 62 is exposed at the notch of the second accommodation groove 511 and forms an interference fit with the central tube 3 to achieve sealing. In other embodiments, it may also be a sealing fit between the outer wall of the central tube 3 and the inner wall of the second extension section 51.

[0062] The present utility model also proposes a water purification device, which includes a reverse osmosis filtration assembly 100. The specific structure of the reverse osmosis filtration assembly 100 refers to the above embodiments. Since this water purification device adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0063] The above description is only an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields, is included within the patent protection scope of the present utility model.

Claims

1. A reverse osmosis filtration component, characterized in that: include: The filter bottle has an upper end and a lower end, and the upper end of the filter bottle is provided with a water inlet, a water outlet and a wastewater outlet; A reverse osmosis filter element is arranged in the filter bottle, the reverse osmosis filter element is wrapped with a sealing layer, and a water flow channel is formed between the outer periphery of the reverse osmosis filter element and the filter bottle; A central tube, the reverse osmosis filter element is sleeved on the central tube, a partition extending along the axial direction of the central tube is arranged in the central tube to separate the central tube into a wastewater flow channel and an outlet flow channel, and the central tube is provided with a plurality of flow holes, and the flow holes are respectively connected to the pure water side of the reverse osmosis filter element and the outlet flow channel; Wherein, the water outlet flow channel is connected with the water outlet through the water flow channel, and the wastewater side of the reverse osmosis filter element is connected with the wastewater outlet through the wastewater flow channel.

2. The reverse osmosis filtration assembly according to claim 1, characterized in that The outer wall of the central tube is provided with a plurality of guide grooves, the plurality of guide grooves are arranged at intervals in the axial direction of the central tube, the plurality of flow holes are respectively provided in the groove walls of the plurality of guide grooves, and the guide grooves are connected with the water outlet channel via the flow holes.

3. The reverse osmosis filtration assembly according to claim 2, characterized in that: The guide groove is arranged in the form of an annular groove.

4. The reverse osmosis filtration assembly according to claim 1, characterized in that: The central pipe includes a main pipe part and a connector, wherein the connector is connected to the lower end of the main pipe part, and a first flow guide channel is formed in the connector, through which the water outlet channel is communicated with the water flow channel.

5. The reverse osmosis filtration assembly according to claim 4, characterized in that: The connector includes a connecting platform and a first extension section connected to the connecting platform. The connecting platform is respectively connected to the main pipe and the partition. The connecting platform is provided with a water inlet of the first diversion channel at a position corresponding to the water flow channel.

6. The reverse osmosis filtration assembly according to claim 5, characterized in that: The reverse osmosis filter element further comprises a first filter element cover, which is connected to the lower end of the reverse osmosis filter element, and has a socket for the first extension section to extend therein, and a first sealing ring is arranged between the first extension section and the first filter element cover.

7. The reverse osmosis filtration assembly according to claim 6, characterized in that: A water-passing gap is formed between the lower end of the first filter element cover and the filter bottle, and the first flow guide channel is connected to the water-passing channel through the water-passing gap.

8. The reverse osmosis filtration assembly according to claim 6, characterized in that: The reverse osmosis filter element filter assembly includes a second filter element cover, which is glued to the upper end of the reverse osmosis filter element. The second filter element cover is provided with a second guide channel. The wastewater flow channel is connected with the wastewater outlet through the second guide channel. A block is provided at one end of the outlet flow channel close to the second guide channel, and the block is used to separate the outlet flow channel from the first guide channel.

9. The reverse osmosis filtration assembly according to claim 8, characterized in that: The second filter element cover extends toward the central tube to form a second extension section, the second flow guide channel is located in the second extension section, the second extension section is inserted into the central tube, and a second sealing ring is provided between the second extension section and the central tube.

10. A water purification device, characterized in that: It comprises the reverse osmosis filtration component according to any one of claims 1 to 9.

Images