Filtering device and water purifying equipment

Abstract

The utility model provides a filtering device and water purifying equipment, and the filtering device comprises a filter element shell, the filter element shell is internally provided with a containing cavity, and the filter element shell is provided with a raw water inlet, a pure water outlet, a wastewater outlet and a living water outlet; the front filter element is arranged in the containing cavity, a raw water channel is formed between the front filter element and the filter element shell, the raw water inlet is communicated with the raw water channel, and the raw water channel is communicated with the water inlet end of the front filter element; the rear filter element is arranged in the accommodating cavity, a living water channel is arranged between the rear filter element and the front filter element, the living water channel is communicated with the water outlet end of the front filter element and the living water outlet, the water inlet end of the rear filter element is communicated with the living water channel, the pure water end of the rear filter element is communicated with the pure water outlet, and the wastewater end of the rear filter element is communicated with the wastewater outlet. According to the filtering device, the living water and the pure water can be directly discharged, the use requirements of customers for the living water and the pure water are met, and the problem that an existing filtering device cannot discharge both the pure water and the living water is solved.

Description

Technical Field

[0001] This application relates to the field of water purification equipment technology, and in particular to a filtration device and water purification equipment. Background Technology

[0002] Water purification equipment refers to devices used to purify water, removing impurities and harmful substances. Its primary purpose is to provide cleaner and safer drinking water. Common types include faucet water purifiers, under-sink water purifiers, and reverse osmosis water purifiers. These devices use built-in composite filter cartridges to remove impurities from the water. However, current composite filter cartridges typically only have an inlet, a purified water outlet, and a wastewater outlet, and cannot directly dispense drinking water. Summary of the Invention

[0003] This application provides a filtration device and a water purification equipment to solve the problems existing in the related technology. The technical solution is as follows:

[0004] In a first aspect, embodiments of this application provide a filtering device, including:

[0005] The filter cartridge housing has an internal cavity and has a raw water inlet, a pure water outlet, a wastewater outlet, and a domestic water outlet on its surface.

[0006] A pre-filter element is placed in the accommodating cavity, and a raw water channel is formed between the pre-filter element and the filter element housing. The raw water inlet is connected to the raw water channel, and the raw water channel is connected to the water inlet end of the pre-filter element.

[0007] A post-filter element is placed within the accommodating cavity. A domestic water channel is provided between the post-filter element and the pre-filter element. The domestic water channel is connected to the water outlet of the pre-filter element and the domestic water outlet. The water inlet of the post-filter element is connected to the domestic water channel. The pure water end of the post-filter element is connected to the pure water outlet. The wastewater end of the post-filter element is connected to the wastewater outlet.

[0008] In one embodiment, the filtration device further includes a filter element frame, which is placed inside the accommodating cavity. The pre-filter is sleeved on the filter element frame, and the post-filter is located inside the filter element frame. The filter element frame and the post-filter form the domestic water channel.

[0009] In one embodiment, the filter element frame has a plurality of water passage holes, which are spaced apart along the length of the filter element frame, and the water outlet of the pre-filter element is connected to the domestic water channel through the water passage holes.

[0010] In one embodiment, the filtration device further includes a support ring placed inside the domestic water channel. The outer side wall of the support ring is connected to the filter element skeleton, and the inner side wall of the support ring is connected to the post-filter element. The support ring is sleeved on the outside of the post-filter element.

[0011] In one embodiment, a central tube is provided in the middle of the post-filter cartridge, and the central tube has a plurality of pure water through holes. The plurality of pure water through holes are spaced apart along the length direction of the central tube. The pure water end of the post-filter cartridge communicates with the interior of the central tube through the pure water through holes, and the water outlet end of the central tube communicates with the pure water outlet.

[0012] In one embodiment, the central tube is filled with mineralized filter media, and a filter screen is provided at the water outlet end of the central tube and in the pure water through hole. The pore size of the filter screen is smaller than the diameter of the mineralized filter media.

[0013] In one embodiment, the filtration device further includes a first end cap, which is placed inside the filter cartridge housing and fixed to one end of the pre-filter cartridge. The outer peripheral surface of the first end cap is sealed to the filter cartridge housing, and a first gap is formed between the inner wall of the first end cap and the filter cartridge housing. The domestic water channel communicates with the domestic water outlet through the first gap. The first end cap has a first filter cartridge fixing groove, and one end of the pre-filter cartridge is placed in the first filter cartridge fixing groove.

[0014] In one embodiment, the filtration device further includes a second end cap, which is placed inside the filter cartridge housing and fixed to the other end of the pre-filter cartridge. The second end cap has a second filter cartridge fixing groove and a third filter cartridge fixing groove. The other end of the pre-filter cartridge is placed in the second filter cartridge fixing groove, and one end of the post-filter cartridge is placed in the third filter cartridge fixing groove.

[0015] In one embodiment, the filtration device further includes a wastewater end cap and a pure water end cap. The wastewater end cap is located at the other end of the post-filter element, and its outer peripheral surface is sealed to the filter element housing. A second gap exists between the inner wall of the wastewater end cap and the filter element housing, and the wastewater end of the post-filter element communicates with the wastewater outlet through the second gap. The pure water end cap is placed inside the wastewater end cap, and its middle portion has a pure water flow channel. The pure water end of the post-filter element communicates with the pure water outlet through the pure water flow channel.

[0016] Secondly, embodiments of this application provide a water purification device, including a filtration device as described in any of the above claims.

[0017] The advantages or beneficial effects of the above technical solutions include at least the following:

[0018] The filtration device of this application embodiment includes a filter cartridge housing, a pre-filter cartridge, and a post-filter cartridge. The filter cartridge housing has a raw water inlet, a pure water outlet, a wastewater outlet, and a domestic water outlet. In use, tap water enters the raw water channel through the raw water inlet and then enters the pre-filter cartridge for filtration. After filtration, domestic water is formed and enters the domestic water channel, exiting through the domestic water outlet. The domestic water in the domestic water channel can also enter the post-filter cartridge for further filtration. The filtered pure water is discharged through the pure water outlet, while the wastewater generated during filtration is discharged through the wastewater outlet. The filtration device of this application embodiment can directly output both domestic water and pure water, meeting customers' needs for both and solving the problem of existing filtration devices being unable to output both.

[0019] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0020] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0021] Figure 1 This is a schematic diagram of the filtration device.

[0022] Figure 2 This is a cross-sectional view of the filtration device;

[0023] Figure 3 Another cross-sectional view of the filtration device;

[0024] Figure 4 This is a schematic diagram of the filter element skeleton.

[0025] Figure 5 This is a schematic diagram of the support ring structure;

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Filter cartridge housing; 2. Pre-filter cartridge; 3. Post-filter cartridge; 101. Receptacle cavity; 4. Raw water inlet; 5. Pure water outlet; 6. Wastewater outlet; 7. Domestic water outlet; 102. Raw water channel; 103. Domestic water channel; 8. Filter cartridge frame; 81. Water passage hole; 9. Central tube; 91. Pure water passage hole; 10. Carbon fiber membrane; 11. Mineralized filter media; 12. Filter screen; 13. Support ring; 131. First contact part; 132. 14. First end cap; 15. Sealing ring; 141. First gap; 142. First filter element fixing groove; 16. Second end cap; 161. Second filter element fixing groove; 162. Third filter element fixing groove; 163. Fixing post; 31. Fixing hole; 17. Wastewater end cap; 18. Pure water end cap; 171. Second gap; 181. Pure water flow channel; 182. Second fixing post; 104. Housing body; 105. Housing end cap. Detailed Implementation

[0028] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0029] Example 1:

[0030] like Figures 1 to 3 As shown in the figure, this application provides a filtration device, including a filter housing 1, a pre-filter 2, and a post-filter 3. The filter housing 1 has an internal cavity 101 and a raw water inlet 4, a pure water outlet 5, a wastewater outlet 6, and a domestic water outlet 7. The pre-filter 2 is placed within the cavity 101, forming a raw water channel 102 between the pre-filter 2 and the filter housing 1. The raw water inlet 4 communicates with the raw water channel 102, and the raw water channel 102 communicates with the inlet end of the pre-filter 2. The post-filter 3 is placed within the cavity 101, and a domestic water channel 103 is formed between the post-filter 3 and the pre-filter 2. The domestic water channel 103 communicates with the outlet end of the pre-filter 2 and the domestic water outlet 7. The inlet end of the post-filter 3 is connected to the domestic water channel 103, the pure water end of the post-filter 3 is connected to the pure water outlet 5, and the wastewater end of the post-filter 3 is connected to the wastewater outlet 6.

[0031] The filtration device of this embodiment includes a filter housing 1, a pre-filter 2, and a post-filter 3. The filter housing 1 has a raw water inlet 4, a pure water outlet 5, a wastewater outlet 6, and a domestic water outlet 7. In use, tap water enters the raw water channel 102 through the raw water inlet 4 and then enters the pre-filter 2 for filtration. After filtration, it forms domestic water, which enters the domestic water channel 103 and exits through the domestic water outlet 7. The domestic water in the domestic water channel 103 can also enter the post-filter 3 for filtration. The filtered pure water is discharged through the pure water outlet 5, and the wastewater generated during filtration is discharged through the wastewater outlet 6. The filtration device of this embodiment can directly output both domestic water and pure water, meeting customers' needs for both and solving the problem that existing filtration devices cannot output both.

[0032] In one embodiment, to protect the pre-filter element 2, the filtration device further includes a filter element frame 8, which is placed inside the filter element housing 1. The pre-filter element 2 is fitted onto the filter element frame 8, and the post-filter element 3 is located inside the filter element frame 8, forming a domestic water channel 103 between the filter element frame 8 and the post-filter element 3. Preferably, the filter element frame 8 is made of existing polypropylene (PP) material, and the filter element frame 8 is used to protect the pre-filter element 2.

[0033] like Figure 3 , Figure 4 As shown, to allow the domestic water filtered by the pre-filter 2 to enter the domestic water channel 103, the filter element frame 8 has multiple water passage holes 81. These water passage holes 81 are spaced apart along the length of the filter element frame 8, and the outlet end of the pre-filter 2 communicates with the domestic water channel 103 through the water passage holes 81. Preferably, at least two rows of water passage holes 81 can be provided on the filter element frame 8. The domestic water filtered by the pre-filter 2 enters the domestic water channel 103 through the water passage holes 81.

[0034] Since the domestic water channel 103 is connected to the domestic water outlet 7 and the domestic water channel 103 is connected to the inlet of the post-filter 3, tap water enters the domestic water channel 103 after being filtered by the pre-filter 2. The domestic water in the domestic water channel 103 can be directly discharged through the domestic water outlet 7. The domestic water in the domestic water channel 103 can also enter the post-filter 3 for further filtration into pure water before being discharged.

[0035] In one embodiment, a central tube 9 is provided in the middle of the post-filter cartridge 3. The central tube 9 has multiple pure water through holes 91, which are spaced apart along the length of the central tube 9. The pure water end of the post-filter cartridge 3 communicates with the interior of the central tube 9 through the pure water through holes 91, and the water outlet end of the central tube 9 communicates with the pure water outlet 5. Preferably, at least two rows of pure water through holes 91 are provided on the central tube 9. Domestic water in the domestic water channel 103 enters the post-filter cartridge 3 through the water inlet end for filtration. The filtered pure water enters the central tube 9 through the pure water through holes 91 and can be discharged through the pure water outlet 5.

[0036] Preferably, the post-filter 3 is an RO membrane reverse osmosis filter. To improve the taste of pure water, a carbon fiber membrane 10 can be wound around the outer periphery of the central tube 9. In another embodiment, the post-filter 3 can also be an existing RO membrane filter using a carbon fiber membrane.

[0037] To increase the mineral content in the purified water, this embodiment of the application also includes a mineralized filter media 11 loaded inside the central tube 9. This mineralized filter media 11 can be any existing mineralized filter media containing minerals such as calcium, magnesium, sodium, and potassium. By loading the mineralized filter media 11 inside the central tube 9, the mineral content in the purified water can be increased.

[0038] To prevent the mineralized filter media 11 from leaking from the pure water outlet 5 and the pure water through hole 91, a filter screen 12 is installed at the water outlet end of the central pipe 9 and inside the pure water through hole 91. The pore size of the filter screen 12 is smaller than the diameter of the mineralized filter media 11, thereby preventing the mineralized filter media 11 from leaking.

[0039] In one embodiment, to support and protect the post-filter element 3, the filtration device further includes a support ring 13, which is placed inside the domestic water channel 103. The outer side wall of the support ring 13 is connected to the filter element frame 8, and the inner side wall of the support ring 13 is connected to the post-filter element 3. The support ring 13 is sleeved on the outside of the post-filter element 3.

[0040] Specifically, such as Figure 5 As shown, multiple first abutment portions 131 are spaced apart on the outer circumferential surface of the support ring 13, and multiple second abutment portions 132 are spaced apart on the inner wall of the support ring 13. The first abutment portions 131 abut against the filter element frame 8, and the second abutment portions 132 abut against the post-filter element 3, thereby securing the support ring 13 between the filter element frame 8 and the post-filter element 3, thus achieving the connection between the support ring 13, the filter element frame 8, and the post-filter element 3. The post-filter element 3 is fixed by the support ring 13 to prevent it from shaking during operation.

[0041] In other embodiments, the support ring 13 and the filter element frame 8 can also be connected and fixed by welding or bolts, and the fixing method is not specifically limited.

[0042] In one embodiment, to fix the pre-filter element 2 within the filter element housing 1, the filtration device further includes a first end cap 14. The first end cap 14 is placed inside the filter element housing 1 and is fixed to one end of the pre-filter element 2 and the filter element frame 8. The outer circumferential surface of the first end cap 14 is sealed to the filter element housing 1 by a sealing ring 15, and a first gap 141 exists between the inner wall of the first end cap 14 and the filter element housing 1. The domestic water channel 103 communicates with the domestic water outlet 7 through the first gap 141. The first end cap 14 has a first filter element fixing groove 142, and one end of the pre-filter element 2 and the filter element frame 8 is placed within the first filter element fixing groove 142.

[0043] The filtration device also includes a second end cap 16, which is placed inside the filter element housing 1 and fixed to the other end of the pre-filter element 2 and the filter element frame 8. The second end cap 16 has a second filter element fixing groove 161 and a third filter element fixing groove 162. The other end of the pre-filter element 2 and the filter element frame 8 is placed in the second filter element fixing groove 161, and one end of the rear filter element 3 is placed in the third filter element fixing groove 162. In this embodiment, the pre-filter element 2 and the filter element frame 8 are limited and fixed by the first end cap 14 and the second end cap 16.

[0044] Furthermore, the second end cap 16 has a fixing post 163 in the middle, and the rear filter element 3 has a fixing hole 31 in the middle of one end, with the fixing post 163 placed in the fixing hole 31.

[0045] The filtration device also includes a wastewater end cap 17 and a pure water end cap 18, both of which are located inside the filter cartridge housing 1. The wastewater end cap 17 is located at the other end of the post-filter cartridge 3. The outer circumferential surface of the wastewater end cap 17 is sealed to the filter cartridge housing 1 via a sealing ring 15. A second gap 171 exists between the inner wall of the wastewater end cap 17 and the filter cartridge housing 1, and the wastewater end of the post-filter cartridge 3 communicates with the wastewater outlet 6 through the second gap 171. A gap also exists between the wastewater end cap 17 and the inner wall of the first end cap 14. The pure water end cap 18 is located inside the wastewater end cap 17. The outer circumferential surface of the pure water end cap 18 is sealed to the filter cartridge housing 1 via a sealing ring 15. The pure water end cap 18 has a pure water flow channel 181 in its center, and the pure water end of the post-filter cartridge 3 communicates with the pure water outlet 5 through the pure water flow channel 181. Specifically, a second fixing post 182 is provided on the pure water end cap 18, and the pure water flow channel 181 is located inside the second fixing post 182. The second fixing post 182 is inserted into the center tube 9 and is sealed to the inner wall of the center tube 9 through a sealing ring 15. The filter screen 12 can be placed on the pure water end cap 18, and the filter screen 12 and the pure water end cap 18 can be ultrasonically welded together.

[0046] The filter screen 12 can also be ultrasonically welded to the central tube 9. The filter screen 12 can be placed inside the pure water through hole 91 of the central tube 9, or the filter screen 12 can be placed directly on the inner wall or outer circumferential surface of the central tube 9.

[0047] The pre-filter element 2 in this embodiment can also be an existing composite filter element. In one embodiment, the pre-filter element 2 can be a composite filter element composed of folded PP and carbon rods, a composite filter element composed of folded PP and carbon fiber, a composite filter element composed of folded PET and carbon rods, a composite filter element composed of folded PET and carbon fiber, a composite filter element composed of PP cotton and carbon rods, or a composite filter element composed of PP cotton and carbon fiber.

[0048] The filter housing 1 includes a housing body 104 and a housing end cap 105. The housing end cap 105 is detachably connected to the housing body 104, and the connection method can be the existing technology.

[0049] In use, the filtration device of this embodiment allows tap water to enter the raw water channel 102 through the raw water inlet 4. The tap water then enters the pre-filter cartridge 2 for filtration, producing domestic water, which enters the domestic water channel 103. The domestic water can exit through the gap between the first end cap 14 and the wastewater end cap 17, and through the first gap 141 between the first end cap 14 and the filter cartridge housing 1, into the domestic water outlet 7. The domestic water in the domestic water channel 103 can also enter the post-filter cartridge 3 for filtration, forming pure water. This pure water enters the central tube 9 and flows out through the pure water flow channel 181 within the pure water end cap 18 into the pure water outlet 5. The wastewater generated by the post-filter cartridge 3 exits through the second gap 171 between the wastewater end cap 17 and the filter cartridge housing 1 into the wastewater outlet 6.

[0050] The filtration device of this application embodiment can not only discharge pure water, but also discharge domestic water produced after one filtration, thus meeting the user's needs for domestic water. Since domestic water does not need to be filtered by the post-filter 3, the service life of the post-filter 3 can be extended.

[0051] Example 2:

[0052] The following describes this embodiment in detail with reference to Example 1:

[0053] This application provides a water purification device, including the filtration device described in Embodiment 1 above. Since the filtration device is equipped with a pure water outlet 5 and a domestic water outlet 7, the water purification device can provide both pure water and domestic water to meet the user's needs.

[0054] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. Filtration device, characterized in that The utility model relates to a filter device, including: The filter core shell has the accommodation cavity inside, and the filter core shell has raw water import, pure water outlet, waste water outlet and domestic water outlet on it; The front filter core is placed in the accommodation cavity, and the raw water channel is formed between the front filter core and the filter core shell, the raw water import is communicated with the raw water channel, and the raw water channel is communicated with the water inlet end of the front filter core; The rear filter core is placed in the accommodation cavity, and the domestic water channel is formed between the rear filter core and the front filter core, the domestic water channel is communicated with the water outlet end of the front filter core and the domestic water outlet, the water inlet end of the rear filter core is communicated with the domestic water channel, the pure water end of the rear filter core is communicated with the pure water outlet, and the waste water end of the rear filter core is communicated with the waste water outlet.

2. The filter device of claim 1, wherein, The filter device further includes a filter core framework, the filter core framework is placed inside the accommodation cavity, the front filter core is sleeved on the filter core framework, the rear filter core is located inside the filter core framework, and the filter core framework and the rear filter core form the domestic water channel.

3. The filter device of claim 2, wherein, The filter core framework has a plurality of water passing through holes, and the plurality of water passing through holes are arranged along the length direction of the filter core framework, the water outlet end of the front filter core is communicated with the domestic water channel through the water passing through hole.

4. The filter device of claim 2, wherein, The filter device further includes a support ring, the support ring is placed in the domestic water channel, the outer side wall of the support ring is connected with the filter core framework, the inner side wall of the support ring is connected with the rear filter core, and the support ring is sleeved on the outer side of the rear filter core.

5. The filter device of claim 1, wherein, The rear filter core is provided with a center tube in the middle part, the center tube has a plurality of pure water through holes, the plurality of pure water through holes are arranged along the length direction of the center tube, the pure water end of the rear filter core is communicated with the inside of the center tube through the pure water through hole, and the water outlet end of the center tube is communicated with the pure water outlet.

6. The filter device of claim 5, wherein, The center tube is loaded with mineralized filter material, and the water outlet end of the center tube and the pure water through hole are provided with a filter screen, and the pore size of the filter screen is smaller than the diameter of the mineralized filter material.

7. The filter device according to any one of claims 1 to 6, characterized in that The filter device further includes a first end cover, the first end cover is placed inside the filter core shell, the first end cover is fixed to one end of the front filter core, the outer peripheral surface of the first end cover is sealingly connected with the filter core shell, the first end cover has a first gap between the inner wall and the filter core shell, the domestic water channel is communicated with the domestic water outlet through the first gap, the first end cover has a first filter core fixing groove, and one end of the front filter core is placed in the first filter core fixing groove.

8. The filter device according to any one of claims 1 to 6, characterized in that The filter device further includes a second end cover, the second end cover is placed inside the filter core shell, the second end cover is fixed to the other end of the front filter core, the second end cover has a second filter core fixing groove and a third filter core fixing groove, the other end of the front filter core is placed in the second filter core fixing groove, and one end of the rear filter core is placed in the third filter core fixing groove.

9. The filter device according to any one of claims 1 to 6, characterized in that The filter device further comprises a waste water end cover and a pure water end cover, the waste water end cover is located at the other end of the rear filter core, the outer peripheral surface of the waste water end cover is sealingly connected with the filter core shell, the inner wall of the waste water end cover has a second gap with the filter core shell, and the waste water end of the rear filter core communicates with the waste water outlet through the second gap; the pure water end cover is arranged inside the waste water end cover, the middle part of the pure water end cover has a pure water flow passage, and the pure water end of the rear filter core communicates with the pure water outlet through the pure water flow passage.

10. Water purification apparatus, characterized in that The filter device comprises the filter device according to any one of claims 1 to 9.

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