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; a lower end cover; wherein a central pipe is arranged in the central hole, a partition plate is arranged in the central pipe, the partition plate extends in the length direction of the central pipe to divide the interior of the central pipe into a purified water flow channel and a waste water flow channel, and a plurality of water passing holes are formed in the pipe wall of the central pipe. Water filtered by the reverse osmosis filter element enters the purified water flow channel through the water passing hole, and waste water filtered by the reverse osmosis filter element enters the waste water flow channel through the lower end cover; according to the technical scheme provided by the utility model, the separation design of the central pipe is adopted, so that the outflow paths of pure water and waste water cannot interfere with each other, the possibility of cross contamination between the pure water and the waste water is reduced, and the filtering effect of the reverse osmosis filtering assembly is ensured.

Description

Technical Field

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

[0002] In the existing water purification equipment, filters are commonly used to filter water, and the filter includes a reverse osmosis filter element for reducing the salt ion concentration in water and filtering microorganisms.

[0003] Currently, the general reverse osmosis filter element adopts a spiral wound membrane, and when filtering, water enters and exits from the top of the reverse osmosis filter element at the same time. Therefore, there may be both pure water and waste water inside the reverse osmosis filter element, which is likely to cause cross-contamination. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a reverse osmosis filtration component, aiming to isolate the pure water waterway and the waste water waterway and avoid cross-contamination.

[0005] To achieve the above purpose, the reverse osmosis filtration component provided by the utility model includes

[0006] A filter bottle;

[0007] A reverse osmosis filter element, which is arranged in the filter bottle and has a central hole;

[0008] A lower end cover, which is arranged at the bottom of the reverse osmosis filter element;

[0009] Wherein, a central pipe is arranged in the central hole, a partition is arranged in the central pipe, the partition extends along the length direction of the central pipe to divide the inside of the central pipe into a pure water flow channel and a waste water flow channel, a plurality of water passing holes are formed in the pipe wall of the central pipe, the water filtered by the reverse osmosis filter element enters the pure water flow channel through the water passing holes, and the waste water generated by the reverse osmosis filter element enters the waste water flow channel through the lower end cover.

[0010] In an embodiment, the reverse osmosis filter element has a housing, a pure water gap for pure water to pass through is formed between the inner wall of the filter bottle and the housing, a waste water gap for waste water to pass through is formed between the lower end cover and the reverse osmosis filter element, a partition member is arranged at the bottom of the central pipe, and the partition member is used for conducting the pure water flow channel and the pure water gap, and the partition member is also used for conducting the waste water flow channel and the waste water gap.

[0011] In one embodiment, the separator has a base disposed at the bottom end of the central tube. An extension protrudes from the surface of the base facing away from the central tube. The base and the extension are hollow to form a communicating flow channel. The extension extends into the lower end cap, and the communicating flow channel is used to connect the purified water flow channel and the purified water gap.

[0012] In one embodiment, the lower end cap is provided with a through groove for the extension to extend into. A water passing gap is formed between the lower end cap and the bottom of the filter bottle, and the water passing gap is used to connect the purified water gap and the communicating flow channel.

[0013] In one embodiment, a sealing groove is formed in the groove wall of the through groove, and a sealing ring is disposed in the sealing groove. The sealing ring is used to provide sealing between the extension and the through groove.

[0014] In one embodiment, the base is provided with a waste water hole, and the waste water hole is used to connect the waste water gap and the waste water flow channel.

[0015] In one embodiment, the lower end cap is provided with at least two top blocks which are in press contact with the bottom end of the central tube and the base. The top blocks are used to provide support for the central tube and the base.

[0016] In one embodiment, an upper end cap is provided at the top of the reverse osmosis filter element. The upper end cap is formed with a purified water outlet for discharging purified water and a waste water outlet for discharging waste water. The purified water outlet communicates with the purified water gap, and the waste water outlet communicates with the waste water flow channel.

[0017] In one embodiment, the upper end cap protrudes to form an embedding portion which is embedded into the central tube. The embedding portion is hollow and is used to connect the waste water outlet and the waste water flow channel.

[0018] In one embodiment, a stop block is provided at the top of the partition plate, and the stop block is used to prevent waste water from entering the purified water flow channel when passing through the embedding portion.

[0019] In one embodiment, a water inlet pipe, a water outlet pipe and a waste water pipe are provided at the top of the filter bottle. The water outlet pipe communicates with the purified water outlet, the waste water pipe communicates with the waste water outlet. The upper end cap is further formed with a water inlet for supplying water to the reverse osmosis filter element, and the water inlet pipe communicates with the water inlet.

[0020] The present utility model further provides a water purification device, including the above reverse osmosis filtration assembly.

[0021] The technical solution of the present utility model adopts the partition design of the central tube, so that the outflow paths of pure water and wastewater will not interfere with each other, thereby reducing the possibility of cross-contamination between pure water and wastewater and ensuring the filtration effect of the reverse osmosis filtration component. Description of the Drawings

[0022] 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.

[0023] Figure 1 It is a schematic diagram of the overall structure of the reverse osmosis filtration component provided by the present utility model;

[0024] Figure 2 It is a cross-sectional view of the reverse osmosis filtration component of the present utility model;

[0025] Figure 3 It is Figure 2 an enlarged view of part A in

[0026] Figure 4 It is Figure 2 an enlarged view of part B in

[0027] Figure 5 It is a schematic diagram of the structure of the reverse osmosis filtration component after hiding the filter bottle;

[0028] Figure 6 It is an exploded view of the reverse osmosis filtration component after hiding the filter bottle;

[0029] Figure 7 It is Figure 6 an enlarged view of part C in

[0030] Figure 8 It is a schematic diagram of the cooperation between the partition and the bottom of the central tube.

[0031] Explanation of the reference numerals in the drawings:

[0032] 1. Filter bottle; 11. Reverse osmosis filter element; 111. Outer shell; 112. Central hole; 12. Lower end cover; 121. Waste water gap; 122. Through groove; 123. Sealing groove; 124. Sealing ring; 125. Top block; 13. Upper end cover; 131. Clean water outlet; 132. Waste water outlet; 133. Water inlet; 134. Embedded part; 14. Clean water gap; 15. Water passing gap; 16. Water inlet pipe; 17. Water outlet pipe; 18. Waste water pipe; 2. Central pipe; 21. Partition board; 211. Stop block; 22. Annular groove; 221. Water passing hole; 23. Clean water flow channel; 24. Waste water flow channel; 25. Partition member; 251. Base; 252. Extension part; 253. Connecting flow channel; 254. Waste water hole; 26. Base groove.

[0033] 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

[0034] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] 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 position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating 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 solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill 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 protection scope required by the present utility model.

[0037] In water purification equipment, filters are commonly used to filter water. Generally, filters include a pre-filter for filtering large particles such as floccules, a reverse osmosis filter for reducing the salt ion concentration in water and filtering microorganisms, and a post-filter for improving the taste of purified water.

[0038] Existing reverse osmosis filters are generally spiral wound filters, that is, the reverse osmosis membrane is wound into a roll to form a filter element; the spiral wound filter element has a void for water inlet and outlet. In the prior art, the water filtered by the reverse osmosis filter element is called pure water, the water not filtered by the reverse osmosis filter element is called raw water, and the water with a high ion concentration intercepted during the reverse osmosis filtration process is called waste water; the spiral wound reverse osmosis filter element is generally hollow, and there are gaps between adjacent membranes. The raw water enters the gap between the membranes from one end of the spiral wound filter element, and then under the action of pressure, the water will pass through the reverse osmosis membrane to form pure water, and solutes such as ions in the water will remain in the voids of the reverse osmosis filter element, and the ions remaining in the reverse osmosis filter element will be mixed with the subsequent raw water; as the reverse osmosis filtration process continues, some water with a high ion concentration will be squeezed out of the voids under the action of the inlet pressure of the raw water to form waste water, and due to the current mainstream miniaturized and integrated design, both the raw water and the waste water enter or exit through the same end of the reverse osmosis filter element.

[0039] In household or commercial water purification equipment, the reverse osmosis filtration process may stop at any time. However, if there are problems with the spiral wound reverse osmosis filter element, such as damage or poor sealing, or when the spiral wound reverse osmosis filter element has been used for a long time but has not reached its service life, due to the characteristics of the reverse osmosis membrane, cross-contamination between pure water and waste water may occur, resulting in the failure of the reverse osmosis filter element to filter, or problems such as too high ion concentration in the first glass of water when the water purification equipment is restarted; in the prior art, flow paths have been designed to avoid cross-contamination between pure water and waste water, but their flow path designs are complex and the manufacturing costs are high, which are not suitable for large-scale popularization and application.

[0040] Refer to Figure 1 and Figure 2 Therefore, the present utility model proposes a reverse osmosis filtration assembly, aiming to reconstruct the flow path inside the reverse osmosis filter element 11 with a relatively simple structure, so as to not only isolate the cross-contamination between pure water and waste water, but also relatively reduce the complexity of its flow path, thereby reducing the manufacturing cost.

[0041] Refer to Figure 2 and Figure 4, the reverse osmosis filtration component proposed by the present utility model includes a filter bottle 1, a reverse osmosis filter element 11 and a lower end cap 12; the reverse osmosis filter element 11 is arranged inside the filter bottle 1, and the lower end cap 12 is arranged at the bottom of the reverse osmosis filter element 11, and the filter bottle 1 provides accommodation for the overall structure; wherein, the reverse osmosis filter element 11 has a central hole 112, and a central tube 2 is arranged inside the central hole 112, and a partition 21 is arranged inside the central tube 2, and the partition 21 extends along the length direction of the central tube 2 to divide the inside of the central tube 2 into a clean water flow channel 23 and a wastewater flow channel 24; specifically, a number of water passing holes 221 are formed in the closing of the central tube 2, and the water filtered by the reverse osmosis filter element 11 will enter the clean water flow channel 23 through the water passing holes 221, and the wastewater generated by the reverse osmosis filter element 11 will enter the wastewater flow channel 24 through the lower end cap 12; thus, on the basis of not changing the same-side inlet and outlet of raw water, wastewater and clean water of the reverse osmosis filter element 11 in the prior art, the physical isolation between the clean water flow channel 23 and the wastewater flow channel 24 is completed through the central tube 2 and the partition 21 arranged inside it, greatly reducing the possibility of cross-contamination between wastewater and pure water, and the arrangement of the partition 21 inside the central tube 2 is simpler than the complex flow path design in the prior art, so the complexity of the overall flow path of the reverse osmosis filtration component can be reduced, and the manufacturing cost can be reduced.

[0042] Refer to Figure 2 and Figure 4 , a number of annular grooves 22 are also formed on the outer wall of the central tube 2, and the annular grooves 22 correspond to the water passing holes 221 one by one, that is, a number of annular grooves 22 are distributed on the outer wall of the central tube 2 along the length direction of the central tube 2; in the present utility model, the reverse osmosis filter element 11 actually surrounds the entire central tube 2, that is, pure water flows out from the inner wall of the central hole 112 of the reverse osmosis filter element 11 all the time during the reverse osmosis filtration process, and the arrangement of the annular grooves 22 enables the clean water precipitated from the reverse osmosis filter element 11 surrounding the central tube 2 to enter the water passing holes 221 along it, so the arrangement of the annular grooves 22 can expand the amount of clean water collected from the reverse osmosis filter element 11, thereby improving the water outlet efficiency of the overall structure. In some other embodiments of the present utility model, it is also possible to have a number of water passing holes 221 in the annular grooves 22, but the water passing holes 221 communicate only with the clean water flow channel 23.

[0043] It should be noted that the purified water in the above-mentioned purified water flow channel 23 and the pure water have the same meaning, that is, both are the water filtered by the reverse osmosis filter element 11, and the same applies hereinafter; in addition, since there is a trend of miniaturization design for current water purification equipment for household, commercial or industrial use, it is necessary to set the inlets and outlets of the purified water, waste water and raw water in the reverse osmosis filter element 11 at the same end or the same side of the reverse osmosis filtration module. Such a setting does not require separate design of water channels for the inlets and outlets in multiple directions in the silver reverse osmosis filtration module of the water purification equipment, which is conducive to the miniaturization design of the water purification equipment, reduces the occupied space of the water purification equipment during actual application, and thus enables the water purification equipment to have more location options during actual design or installation.

[0044] Referring to Figure 5 and Figure 8 , in the present utility model, the reverse osmosis filter element 11 has a housing 111, and pure water enters the reverse osmosis filter element 11 from the top end of the reverse osmosis filter element 11. The housing 111 and the lower end cover 12 are hermetically arranged, so that the water in the reverse osmosis filter element 11 can only flow through the top end or the central tube 2 of the reverse osmosis filter element 11 to communicate with the outside; specifically, a purified water gap 14 for purified water to pass through is formed between the housing 111 and the inner wall of the filter bottle 1, and a waste water gap 121 for waste water to pass through is formed between the lower end cover 12 and the reverse osmosis filter element 11. A partition 25 is provided at the bottom of the central tube 2, and the partition 25 is used to conduct the purified water flow channel 23 and the purified water gap 14, and the partition 25 also conducts the waste water flow channel 24 and the waste water gap 121 at the same time; the above setting completely separates the flow paths of the purified water and the waste water in a physical manner, further reducing the possibility of cross-contamination between the pure water and the waste water; in addition, in the above setting, after the pure water enters the purified water flow channel 23, it flows from the top end of the reverse osmosis filter element 11 to the bottom end of the reverse osmosis filter element 11, and then enters the purified water gap 14 through the partition 25 and flows from the bottom end of the filter bottle 1 to the top end of the filter bottle 1; after the waste water enters the waste water flow channel 24, it flows from the bottom end of the reverse osmosis filter element 11 to the top end of the reverse osmosis filter element 11, that is, in the same flow direction as the pure water after entering the purified water gap 14, so that both can flow out from the top of the filter bottle 1, which is conducive to the overall miniaturization design of the reverse osmosis filtration module, and further conducive to the miniaturization design of the water purification equipment.

[0045] It should be noted that in order to ensure the normal flow of the pure water, waste water and raw water, a water inlet pipe 16, a water outlet pipe 17 and a waste water pipe 18 are provided at the top of the filter bottle 1. The water inlet pipe 16 is used to introduce raw water into the filter bottle 1, the water outlet pipe 17 is used to discharge the pure water filtered by the reverse osmosis filter element 11, and the waste water pipe 18 is used to discharge the waste water generated during the reverse osmosis filtration process.

[0046] Referring to Figure 4 , Figure 7 and Figure 8, specifically, the separator 25 has a base 251. The base 251 is arranged at the bottom end of the central tube 2. An extension 252 protrudes from the surface of the base 251 facing away from the central tube 2. The base 251 and the extension 252 are hollow to form a communicating flow channel 253. The extension 252 extends into the lower end cap 12, and the communicating flow channel 253 is used to connect the purified water flow channel 23 and the purified water gap 14. Additionally, the lower end cap 12 is provided with a through groove 122 for the extension 252 to extend into, and a water passing gap 15 is formed between the lower end cap 12 and the bottom of the filter bottle 1. The water passing gap 15 is used to connect the purified water gap 14 and the communicating flow channel 253. Generally speaking, when raw water is filtered by the reverse osmosis filter element 11 to form purified water, the purified water enters the purified water flow channel 23 through the water passing hole 221, then flows into the water passing gap 15 through the communicating flow channel 253, and then enters the purified water gap 14 through the water passing gap 15. The purified water gap 14 is connected to the water outlet pipe 17. The communicating flow channel 253, the water passing gap 15 and the purified water gap 14 together form the outflow path of the purified water, so that the pure water entering the purified water flow channel 23 can fully utilize the internal space of the filter bottle 1 to flow out, thereby simplifying the flow path of the pure water in the filter bottle 1 and relatively reducing the overall manufacturing cost of the reverse osmosis filtration assembly.

[0047] Refer to Figure 4 , Figure 7 and Figure 8 , correspondingly, a waste water hole 254 is also formed on the base 251. The waste water hole 254 is used to connect the waste water gap 121 and the waste water flow channel 24. That is, during the filtration process of the reverse osmosis filter element 11, the waste water generated by the reverse osmosis filter element 11 will enter the waste water gap 121. The waste water gap 121 is communicated with the waste water hole 254, and the waste water hole 254 is also communicated with the waste water flow channel 24. Therefore, the waste water generated during the filtration process of the reverse osmosis filter element 11 will sequentially pass through the waste water gap 121 and the waste water hole 254 and enter the waste water flow channel 24. The waste water flow channel 24 is also communicated with the waste water pipe 18. Furthermore, the waste water will be discharged into the waste water pipe 18 through the waste water flow channel 24 and then discharged out of the filter bottle 1 into the external environment.

[0048] It should be noted that the through groove 122 formed on the lower end cap 12 is used to lead the water in the purified water flow channel 23 to the water passing gap 15, and the waste water gap 121 is arranged between the lower end cap 12 and the reverse osmosis filter element 11. Therefore, cross - contamination between the purified water and the waste water may occur between the waste water gap 121 and the water passing gap 15 through the through groove 122. To reduce the possibility of this situation occurring, a sealing groove 123 is formed on the groove wall of the through groove 122, and a sealing ring 124 is arranged in the sealing groove 123. The sealing ring 124 is pressed between the extension 252 and the through groove 122. Thus, the sealing ring 124 can provide sealing between the extension 252 and the through groove 122, reducing the possibility of cross - contamination between the purified water and the waste water through the through groove 122.

[0049] Refer to Figure 4 、 Figure 7 and Figure 8 In the present utility model, there are various settings for the specific connection method between the partition member 25 and the central tube 2. For example, the partition member 25 can be fixedly connected to the bottom of the central tube 2 by means of hot melting and spin welding, etc., or the partition member 25 can be integrally formed on the bottom of the central tube 2. Among them, the method of integrally forming the partition member 25 on the bottom of the central tube 2 can make the partition member 25 and the central tube 2 have better stability, that is, the central tube 2 and the partition member 25 are not easily separated, avoiding the communication between the clean water flow channel 23 and the waste water flow channel 24. However, because the actual volumes of the partition member 25 and the central tube 2 are relatively small, and both have relevant internal structures, the manufacturing difficulty of integrally forming the central tube 2 and the partition member 25 is large. Therefore, generally, the partition member 25 is fixed to the bottom of the central tube 2 by means of spin welding or hot melting. For the convenience of their fixed connection, a base 251 groove is opened at the bottom of the central tube 2. After the base 251 of the partition member 25 is embedded in the base 251 groove, spin welding or hot melting is carried out. The opening of the base 251 groove is conducive to aligning the two during spin welding or hot melting, ensuring the accuracy of the two during fixed connection, and thus improving the qualified rate of the overall structure during the processing and manufacturing process.

[0050] The above-mentioned spin welding refers to spin fusion plastic welding. Spin fusion plastic welding is to use the heat generated by the mutual friction of plastic workpieces to cause the contact surface of the plastic workpieces to melt, and then rely on external pressure and drive to make the upper and lower workpieces rotate and solidify into one body. And positioning spin fusion is to rotate for a set time and then stop instantly at the set position to become a permanent fusion.

[0051] During the overall filtration process of the reverse osmosis filtration component, in order to make water pass through the reverse osmosis filter element 11 smoothly, generally a relatively large water pressure is applied to the raw water. As a result, there will also be a relatively large pressure in the waste water flow channel 24 and the clean water flow channel 23. And generally, the pressures in the waste water flow channel 24 and the clean water flow channel 23 are different, that is, there is a pressure difference between the two. And the connection between the partition member 25 and the central tube 2 is fixed by post-processing. Therefore, the connection between the partition member 25 and the central tube 2 may fall off due to the pressure difference, resulting in the communication between the clean water flow channel 23 and the waste water flow channel 24, leading to cross-contamination of clean water and waste water. To solve this problem and ensure the fixed stability between the partition member 25 and the central tube 2, at least two top blocks 125 are provided on the lower end cover 12, and the top blocks 125 are pressed against the bottom end of the central tube 2 and the base 251, that is, a part of the upper end surface of the top block 125 is pressed against the central tube 2, and another part of the upper end surface is pressed against the base 251. Thus, the top block 125 can be used to share part of the pressure difference received by the base 251, ensuring the fixed connection stability between the partition member 25 and the central tube 2.

[0052] Refer toFigures 5 to 7 In the present utility model, an upper end cap 13 is provided at the top of the reverse osmosis filter element 11. The upper end cap 13, the lower end cap 12, and the housing 111 of the reverse osmosis filter element 11 jointly seal the reverse osmosis filter element 11. Thus, when pure water flows through the purified water gap 14, it is not easy to cross-contaminate with the raw water, ensuring the purity of the pure water, that is, ensuring the filtering effect of the reverse osmosis filter element 11. In addition, the upper end cap 13 is further formed with a purified water outlet 131 for discharging purified water and a wastewater outlet 132 for discharging wastewater. The purified water outlet 131 communicates with the purified water gap 14, and the wastewater outlet 132 communicates with the wastewater flow channel 24. The purified water entering the purified water gap 14 can be discharged from the filter bottle 1 through the purified water outlet 131, and the wastewater entering the wastewater flow channel 24 can be discharged from the filter bottle 1 through the wastewater outlet 132. Correspondingly, the purified water outlet 131 communicates with the water outlet pipe 17, and the wastewater outlet 132 communicates with the wastewater pipe 18. The upper end cap 13 is further formed with a water inlet 133 for supplying water to the reverse osmosis filter element 11, and the water inlet 133 communicates with the water inlet pipe 16. The setting of the upper end cap 13 connects the water circuits for water inlet and outlet in the overall structure and ensures the independence between different water circuits.

[0053] Refer to Figure 3 Specifically, the upper end cap 13 protrudes to form an embedding portion 134. The embedding portion 134 is embedded into the central tube 2, and the embedding portion 134 is hollow inside. Thus, the embedding portion 134 can be used to connect the wastewater outlet 132 and the wastewater flow channel 24, that is, the wastewater enters the wastewater outlet 132 via the embedding portion 134 after entering the wastewater flow channel 24, and then the discharge of the wastewater is completed. Correspondingly, in order to prevent the communication between the wastewater flow channel 24 and the purified water flow channel 23, a blocking block 211 is provided at the top of the partition plate 21. The blocking block 211 is used to block the wastewater from entering the purified water flow channel 23 through the embedding portion 134. In fact, the blocking block 211 is to prevent the mixing of purified water and wastewater in the embedding portion 134. The blocking block 211 is fixedly arranged at the top end of the partition plate 21, and the outer periphery of the blocking block 211 is hermetically connected to the inner wall of the central tube 2. In the present utility model, considering durability and stability, the blocking block 211 and the inner wall of the central tube 2 can be connected by hot melting to ensure that the purified water in the purified water flow channel 23 is not easy to cross-contaminate with the wastewater in the wastewater flow channel 24, and the independence between each water circuit is ensured.

[0054] In the present utility model, the specific flow direction of water is as follows: Raw water that has not been filtered by the reverse osmosis filter element 11 enters the filter bottle 1 through the water inlet pipe 16 at the top of the filter bottle 1, and then enters the gaps of the reverse osmosis filter element 11 through the water inlet 133 of the upper end cap 13. Under the action of pressure, the water moves towards the central hole 112 and precipitates, thus forming pure water. The pure water enters the pure water flow channel 23 through the annular groove 22 and the water passing holes 221, then enters the water passing gap 15 through the communication flow channel 253, then enters the pure water gap 14 through the water passing gap 15, and then enters the pure water outlet 131 of the upper end cap 13 and is discharged from the water outlet pipe 17 at the top of the filter bottle 1; The wastewater generated during the formation of pure water will flow through the wastewater gap 121 to the wastewater hole 254, then enter the wastewater flow channel 24 through the wastewater hole 254, and then enter the wastewater outlet 132 through the embedded part 134 of the upper end cap 13 and is discharged from the wastewater pipe 18 at the top of the filter bottle 1.

[0055] In addition, in the present utility model, the above-mentioned spin welding refers to rotary welding; in the present utility model, the filter bottle, upper end cap, lower end cap, central tube and separator are generally plastic components. Therefore, the rotary welding in the present utility model refers to spin fusion plastic welding, which is to generate heat by rubbing plastic workpieces against each other, so that the contact surfaces of the plastic workpieces melt. Under the action of external pressure and drive, the upper and lower workpieces rotate and solidify into one body, and positioning spin fusion is to rotate for a set time and stop instantly at the set position to form a permanent fusion.

[0056] The present utility model also proposes a water purification device, which includes the above-mentioned reverse osmosis filtration assembly. The specific structure of the reverse osmosis filtration assembly refers to the above-mentioned embodiment. Since this water purification device adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated one by one here.

[0057] The above is only an exemplary embodiment of the present utility model, and does not limit the patent scope of the present utility model accordingly. 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 in the patent protection scope of the present utility model.

Claims

1. A reverse osmosis filtration module, characterized in that, Comprising A filter bottle; A reverse osmosis filter element disposed within the filter bottle, the reverse osmosis filter element having a central hole; A lower end cap disposed at the bottom of the reverse osmosis filter element; Wherein, a central tube is disposed within the central hole, a partition is disposed within the central tube, the partition extends along the length direction of the central tube to divide the interior of the central tube into a clean water flow channel and a waste water flow channel, a plurality of water passing holes are formed in the tube wall of the central tube, water filtered by the reverse osmosis filter element enters the clean water flow channel through the water passing holes, and waste water generated by the reverse osmosis filter element enters the waste water flow channel through the lower end cap.

2. The reverse osmosis filtration module according to claim 1, wherein, The reverse osmosis filter element has a housing, a clean water gap for clean water to pass through is formed between the inner wall of the filter bottle and the housing, a waste water gap for waste water to pass through is formed between the lower end cap and the reverse osmosis filter element, a partition member is disposed at the bottom of the central tube, the partition member is used to conduct the clean water flow channel and the clean water gap, and the partition member is also used to conduct the waste water flow channel and the waste water gap.

3. The reverse osmosis filtration module according to claim 2, wherein, The partition member has a base disposed at the bottom end of the central tube, an extension portion protrudes from the surface of the base facing away from the central tube, the base and the extension portion are hollow to form a communication flow channel, the extension portion extends into the lower end cap, and the communication flow channel is used to communicate the clean water flow channel and the clean water gap.

4. The reverse osmosis filtration module according to claim 3, wherein, The lower end cap is provided with a through groove for the extension portion to extend into, a water passing gap is formed between the lower end cap and the bottom of the filter bottle, and the water passing gap is used to communicate the clean water gap and the communication flow channel.

5. The reverse osmosis filtration module according to claim 4, wherein, A sealing groove is formed in the groove wall of the through groove, and a sealing ring is disposed in the sealing groove, and the sealing ring is used to provide sealing between the extension portion and the through groove.

6. The reverse osmosis filtration module according to claim 3, wherein, The base is provided with a waste water hole for communicating the waste water gap and the waste water flow channel.

7. The reverse osmosis filtration module according to claim 6, wherein The lower end cap is provided with at least two top blocks, the top blocks are pressed against the bottom end of the central tube and the base, and the top blocks are used to provide support for the central tube and the base.

8. The reverse osmosis filtration module according to any one of claims 3 to 7, characterized in that An upper end cap is disposed at the top of the reverse osmosis filter element, the upper end cap is formed with a clean water outlet for discharging clean water and a waste water outlet for discharging waste water, the clean water outlet communicates with the clean water gap, and the waste water outlet communicates with the waste water flow channel.

9. The reverse osmosis filtration module according to claim 8, wherein, The upper end cap protrudes to form an embedded portion, the embedded portion is embedded into the central tube, the embedded portion is hollow, and the embedded portion is used to communicate the waste water outlet and the waste water flow channel.

10. The reverse osmosis filtration module according to claim 9, characterized in that, A blocking block is disposed at the top of the partition, and the blocking block is used to prevent waste water from entering the clean water flow channel when passing through the embedded portion.

11. The reverse osmosis filtration module according to claim 10, wherein, A water inlet pipe, a water outlet pipe and a waste water pipe are disposed at the top of the filter bottle, the water outlet pipe communicates with the clean water outlet, the waste water pipe communicates with the waste water outlet, the upper end cap is further formed with a water inlet for supplying water to the reverse osmosis filter element, and the water inlet pipe communicates with the water inlet.

12. A water purification device, characterized in that, Comprising the reverse osmosis filtration assembly according to any one of claims 1 to 11.

Images