Outer framework, pre-filter and water consumption system

Abstract

The utility model discloses an outer skeleton, prefilter and water consuming system relates to prefilter technical field, wherein outer skeleton includes barrel frame and siphon runner, said siphon runner includes the side wall runner of said side frame and is provided the bottom runner of said chassis, said side wall runner is communicated with said bottom runner, said bottom runner is provided with said bottom runner, said side wall runner is provided with said side frame, said bottom runner is provided with said bottom runner, said bottom runner is provided with said bottom runner, said bottom runner is provided with said bottom runner. The side wall flow channel is provided with a siphon hole communicated with the inner cavity of the cylinder frame, and the siphon flow channel is provided with a first discharge port communicated with the outside of the cylinder frame. According to the scheme, the rotatable outer framework and the siphon flow channel are introduced, so that the filtering efficiency and the cleaning effect are improved, the maintenance process is simplified, and more convenient, efficient and economical use experience is brought to a user.

Description

Technical Field

[0001] The utility model relates to the technical field of pre-filters, in particular to an exoskeleton, a pre-filter and a water system. Background Art

[0002] During the use of the pre-filter, the filter assembly of the pre-filter is usually fixed in the filter housing, and water is filtered and discharged through a direct water flow channel. Impurities attached to the surface of the filter need to be cleaned in situ from time to time. Utility Model Content

[0003] The main purpose of the utility model is to provide an exoskeleton, a pre-filter and a water system using the exoskeleton. The arrangement of the exoskeleton and the siphon flow channel can enhance the cleaning ability of the filter assembly and simplify the cleaning and maintenance process of the filter.

[0004] To achieve the above-mentioned purpose, the exoskeleton proposed in the present invention includes a drum rack, which includes a chassis and side frames provided on the chassis; and

[0005] The siphon flow channel includes a side wall flow channel provided on the side frame and a bottom flow channel provided on the chassis, the side wall flow channel is connected to the bottom flow channel, the side wall flow channel is provided with a siphon hole connected to the inner cavity of the cartridge rack, and the siphon flow channel is provided with a first discharge port connected to the outside of the cartridge rack.

[0006] In one embodiment, the outer frame further includes a siphon component enclosed with the side frame to form the side wall flow channel, and the siphon hole is provided in the siphon component.

[0007] In one embodiment, the siphon member is slidably connected to the side frame, and the siphon member is fixed to the side frame by snapping.

[0008] In one embodiment, a slideway is protruding from the inner surface of the side frame, and the slideway extends axially to both ends of the side frame. Slide rails are provided on both sides of the siphon member, and the siphon member is inserted into the slideway through the slide rails.

[0009] In one embodiment, a mounting notch is provided at the top edge of the side frame, a mounting block is provided at the top of the siphon member facing the side frame, the mounting block is embedded in the mounting notch, and the top of the siphon member is flush with the top edge of the side frame.

[0010] In one embodiment, the siphon member is further provided with a fixing protrusion, and the side frame is further provided with a fixing slot penetrating the side frame below the mounting notch, and the siphon member is fixed to the side frame by engaging the fixing protrusion with the fixing slot.

[0011] In one embodiment, the exoskeleton further includes a bottom cover detachably connected to the chassis and enclosing the bottom cover together with the chassis to form the bottom flow channel.

[0012] In one embodiment, the chassis is provided with a flow channel groove, which is open upward, connected to the side wall flow channel, and extends to the center of the chassis. The bottom cover is snap-fitted with the flow channel groove and seals the opening of the flow channel groove to form the bottom flow channel.

[0013] In one embodiment, a plurality of the siphon flow channels are provided, and the plurality of the siphon flow channels are evenly distributed along the circumference of the cartridge rack.

[0014] In one embodiment, the number of the first discharge ports corresponds to the number of the siphon flow channels, and one of the first discharge ports is connected to one of the bottom flow channels.

[0015] In one embodiment, the first discharge ports are all arranged to be inclined in the same direction from the upper surface of the bottom plate toward the lower surface.

[0016] In one embodiment, the first discharge ports are all located at the end of the bottom flow channel.

[0017] In one embodiment, the bottom plate is further provided with a second discharge port, and the second discharge port communicates with the inner cavity of the cartridge holder and the outside of the cartridge holder.

[0018] In one embodiment, a plurality of the second discharge ports are provided, and one of the second discharge ports is provided between two adjacent siphon channels, and the second discharge port is closer to the outside of the bottom plate than the first discharge port.

[0019] In one embodiment, the exoskeleton is further provided with a scraping device for cleaning the filter assembly of the pre-filter and / or the filter bottle of the pre-filter.

[0020] In one embodiment, a water flow driving member is arranged on the inner periphery of the outer frame, and the water flow driving member can drive the outer frame to rotate under the drive of water flow.

[0021] The present invention further provides a pre-filter, comprising a filter bottle, a filter assembly and the exoskeleton as described above, wherein the exoskeleton is arranged between the filter bottle and the filter assembly.

[0022] The utility model also provides a water use system, comprising the pre-filter as described above.

[0023] The exoskeleton of the technical solution of the present utility model can be used in a pre-filter. On the one hand, the exoskeleton serves as a supporting structure between the filter assembly and the filter bottle, effectively enhancing the stability of the entire pre-filter; on the other hand, through its specific shape and layout, it guides the water flow through the filter assembly more smoothly, thereby improving the filtration efficiency; through the multiple siphon holes of the lateral flow channel, the impurities, particulate matter, etc. intercepted by the filter assembly can be more effectively guided to the bottom flow channel, and finally discharged from the sewage outlet of the filter bottle through the first discharge port. The exoskeleton is rotatable, which helps to automatically remove impurities on the surface of the filter assembly, realize the cleaning of the filter assembly, and improve the cleaning effect. The combination of the rotatable design and the siphon flow channel allows users to perform more effective cleaning and maintenance without disassembling the entire filter, thereby increasing the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 A schematic structural diagram of an embodiment of a pre-filter provided by the present utility model;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the cooperation between the inner and outer skeleton and the impeller assembly;

[0027] Figure 3 Schematic diagram of the exploded structure of the cartridge holder and the bottom cover in an embodiment of the exoskeleton;

[0028] Figure 4 Schematic diagram of the structure of the cartridge holder and the siphon member in an embodiment of the exoskeleton;

[0029] Figure 5 This is a schematic structural diagram of the bottom portion of an embodiment of an exoskeleton;

[0030] Figure 6 This is a schematic structural diagram of the bottom portion of another embodiment of the exoskeleton;

[0031] Figure 7 This is a structural diagram of the disconnected view in the pre-filter.

[0032] Description of Figure Numbers:

[0033] 10. Filter bottle; 101. Water filter chamber; 102. Sewage outlet;

[0034] 20, valve head; 201, water inlet; 202, water outlet;

[0035] 30. Filter component;

[0036] 40. Impeller assembly; 401. Impeller chamber; 440. Impeller body;

[0037] 50, exoskeleton; 501, siphon flow channel; 501a, side wall flow channel; 501b, bottom flow channel; 502, water flow driving member; 503, first discharge port; 504, second discharge port;

[0038] 510, drum rack; 511, chassis; 512, side frame; 515, flow channel; 517, slideway; 518, mounting notch; 519, fixing slot;

[0039] 520, bottom cover;

[0040] 530, siphon component; 531, siphon hole; 532, slide rail; 533, mounting block; 534, fixing boss;

[0041] 60. Water distributor;

[0042] 90. Scraping and cleaning device.

[0043] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0045] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0046] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, 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 number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] Water systems, such as whole-house water purification systems, typically feature a pre-filter to filter out large particles from tap water. This not only ensures water safety for residents but also extends the lifespan of appliances, prevents clogged household water pipes, and improves residents' health. The pre-filter is the first coarse filtration device in a whole-house water purification system. It typically contains a stainless steel filter, a physical filter designed to intercept large particles larger than 40 microns, ensuring back-end water safety.

[0048] See also Figure 1 The pre-filter generally includes a valve head 20, a filter bottle 10, and a filter assembly 30. In one embodiment of the present invention, the pre-filter includes a filter bottle 10 and a valve head 20 connected to the filter bottle 10, a filter assembly 30, an exoskeleton 50, and an impeller assembly 40. The filter bottle 10 has a water filter chamber 101, and the filter assembly 30 and the exoskeleton 50 are provided in the water filter chamber 101, and the impeller assembly 40 is arranged below the exoskeleton 50. The valve head 20 has a water inlet 201 and a water outlet 202 connected to the water filter chamber 101. The water inlet 201 is connected to the water supply end, and the water outlet 202 is connected to the water use end. It should be noted that the water supply end can be a tap, a water tower, or well water, and the water use end can be a faucet, a shower, or a drinking water outlet. This application does not make any specific restrictions on this.

[0049] A water distributor 60 is provided in the valve head 20. The water distributor 60 has a spiral flow channel. The raw water entering the valve head 20 from the water inlet 201 forms a vortex after passing through the water distributor 60. The exoskeleton 50 is arranged with a water flow guide and can rotate relative to the filter assembly 30 under the drive of the water flow. The exoskeleton 50 is provided with a cleaning mechanism to clean the filter screen of the filter assembly 30; and impurities are adsorbed through the siphon flow channel 501 provided by the exoskeleton 50. The rotation of the exoskeleton 50 generates a vortex, and the water flow of the exoskeleton 50 enters the impeller assembly 40. The exoskeleton 50 is connected to the impeller assembly 40 in a transmission manner. In the first stage, the exoskeleton 50 drives the impeller of the impeller assembly 40 to rotate; in the second stage, the impeller will in turn drive the exoskeleton 50 to rotate, so that the water in the filter bottle 10 generates a vortex and is discharged from the sewage outlet 102 of the filter bottle 10 faster.

[0050] A filter assembly 30 is installed inside the pre-filter. The form and structure of the filter assembly 30 are not limited. The filter assembly 30 can be a stainless steel filter mesh or a PP cotton filter mesh. When water flows through, these filters can intercept large particles of impurities in the water and remove some precipitated impurities, rust, sand, mud, bacteria and other particulate impurities generated in the pipeline. It plays a better protective function for water purifiers, washing machines, showers, high-end faucets, downstream pipelines, etc., and reduces the risk of damage to these equipment due to blockage by impurities.

[0051] Reference Figure 1 and Figure 7 The pre-filter is usually a "T"-shaped structure. The left and right ends of the upper "horizontal" position are the water inlet and outlet 202 respectively, the lower "vertical" position is the fuselage and the internal cylindrical filter assembly 30, and the bottom end is the sewage outlet 102, which is controlled by a valve to open and close.

[0052] The valve head 20 is typically made of copper alloy, and the connection between the valve head 20 and the filter bottle 10 is primarily a threaded connection. For example, the valve head 20 is provided with a protruding externally threaded tube, and the mouth of the filter bottle 10 is provided with corresponding internal threads that threadably connect to the externally threaded tube. To reduce the production difficulty of the prefilter, lower the requirements for assembly testing, and lower the material cost of the valve head 20, in this embodiment, the filter bottle 10 and the valve head 20 are connected by splicing and then locked with fasteners.

[0053] During the use of the pre-filter, impurities attached to the surface of the filter need to be cleaned in situ from time to time and then discharged through the drain valve. The efficient operation of the scraping and cleaning device 90 is very important.

[0054] In the present invention, the siphon flow of the exoskeleton 50 is improved. The exoskeleton 50 can be arranged alone in the water filter chamber 101, or used in combination with the impeller assembly 40. The structural improvement of the siphon flow channel 501 of the exoskeleton 50 is introduced below.

[0055] Specifically, the present invention improves the siphon tube structure and installation method of the outer frame 50, which facilitates processing to form the siphon flow channel 501 and easy cleaning of the siphon flow channel 501 to avoid blockage and affect the siphon effect.

[0056] Please combine Figure 1 and Figure 7 , and refer to Figures 2 to 6 In one embodiment of the present utility model, the exoskeleton 50 includes a cartridge rack 510 and a bottom cover 520. The cartridge rack 510 includes a bottom plate 511 and a side frame 512 provided on the bottom plate 511. The siphon flow channel 501 includes a side wall flow channel 501a and a bottom flow channel 501b connected to the side wall flow channel 501a. The side wall flow channel 501a is provided corresponding to the side frame 512. The side wall flow channel 501a is provided with a siphon hole 531 connected to the inner side of the cartridge rack 510; the bottom plate 511 is provided with a first discharge port 503 connected to the outside of the cartridge rack 510, and the bottom flow channel 501b is connected to the first discharge port 503. The bottom cover 520 covers the bottom plate 511 to form the bottom flow channel 501b or the bottom flow channel 501b is provided on the bottom cover 520.

[0057] The exoskeleton 50 of the technical solution of the present invention can be used in a pre-filter. On the one hand, the exoskeleton 50 serves as a supporting structure between the filter assembly 30 and the filter bottle 10, effectively enhancing the stability of the entire pre-filter. On the other hand, through its specific shape and layout, it guides the water flow through the filter assembly 30 more smoothly, thereby improving the filtration efficiency. Through the multiple siphon holes 531 of the lateral flow channel, the impurities, particulate matter, etc. intercepted by the filter assembly 30 can be more effectively guided to the bottom flow channel 501b and finally discharged through the sewage outlet 102. By designing the bottom flow channel 501b between the bottom plate 511 and the bottom cover 520, compared with setting a through bottom flow channel 501b inside the bottom plate 511, on the one hand, the structure is simple and the manufacturing is convenient; on the other hand, it is convenient to clean, reducing the possibility of dirt accumulating inside and clogging the filter screen, thereby avoiding siphon failure. Moreover, compared with the existing solution, it is easier to increase the size of the siphon flow channel 501, thereby improving the cleaning effect.

[0058] The siphon flow channel 501 is in an "L" shape, the side wall flow channel 501a is the vertical part of the "L" shape, and the bottom flow channel 501b is the horizontal part of the "L" shape. The side wall flow channel 501a is set corresponding to the side frame 512, which means that the side wall flow channel 501a is set in the side frame 512 part, and does not limit the formation method of the side wall flow channel 501a.

[0059] Specifically, three siphon channels 501 are provided, with the bottom cover 520 acting as a "fan blade." Each siphon channel 501 is provided with an independent first discharge port 503. To ensure smooth drainage, the first discharge ports 503 are all tilted in the same direction from the upper surface of the chassis 511 toward the lower surface. The tilted first discharge ports 503 guide the water outflow more smoothly, reducing water retention and eddy currents within the bottom channel 501b. This helps prevent the accumulation of impurities within the bottom channel 501b, keeping the pre-filter clean and operating efficiently. The first discharge ports 503 are tilted axially clockwise or counterclockwise. The tilted first discharge ports 503 also have a certain anti-backflow function and can also form a vortex in the drainage. The efficient design of the bottom channel 501b and first discharge ports 503 enables the pre-filter to discharge impurities and sewage more quickly, improving the filtration effect and the overall performance of the system. To avoid water interference, the first discharge ports 503 are all located at the end of the bottom channel 501b.

[0060] The side frame 512 extends axially, and the filter assembly 30 is disposed within the side frame 512. The side frame 512 forms a sidewall channel 501a, which constitutes the siphon channel 501. Multiple sidewall channels 501a are provided, such as two, three, or even more. Siphon holes 531 are provided in the sidewalls. These holes are part of the sidewall channels 501a and are used to guide water from the outside of the filter assembly 30 through the sidewall channels 501a and into the bottom channel 501b. The size, number, and distribution of the siphon holes 531 are carefully designed to ensure even water distribution and effective filtration.

[0061] The side wall flow channel 501a can be formed by the side frame 512 itself; it can also be a part formed separately with the side wall flow channel 501a. In this embodiment, the siphon member 530 and the side frame 512 that constitute the side wall flow channel 501a together form the side wall flow channel 501a. The number of siphon members 530 corresponds to the number of siphon flow channels 501, and the siphon holes 531 are set on the siphon member 530.

[0062] Reference Figure 4 , the siphon member 530 is a separate part and is assembled with the side frame 512 ; in other embodiments, the siphon member 530 is integrally formed with the side frame 512 .

[0063] Without loss of generality, the siphon member 530 can be secured to the side frame 512 in various ways. For example, the siphon member 530 can be locked to the side frame 512; this is inconvenient during installation or maintenance. In this embodiment, to facilitate and secure installation, the siphon member 530 is slidably connected to the side frame 512 and is snap-fastened to the side frame 512. By introducing the design of the slideway 517 and the slide rail 532, the siphon member 530 can be more easily inserted and secured to the side frame 512, while also being easier to remove, thereby improving operational convenience.

[0064] Specifically, the inner surface of the side frame 512 is provided with a protruding slide 517, which extends from each end of the side frame 512. Slide rails 532 are provided on either side of the siphon member 530, through which the siphon member 530 is inserted into the slide 517. The coordinated design of the slide rails 532 and the slide 517 ensures that the siphon member 530 is more stable in its position on the side frame 512, reducing the risk of loosening or displacement due to vibration or water impact, thereby improving the overall stability and reliability of the pre-filter. This stable connection reduces the risk of failure due to loose or displaced components, improving the overall performance and reliability of the pre-filter.

[0065] To enhance the appearance consistency and connection stability, the connection between the side frame 512 and the siphon member 530 is further defined. Specifically, a mounting notch 518 is provided at the top edge of the side frame 512. A mounting block 533 is provided at the top of the siphon member 530, facing the side frame 512. The mounting block 533 is embedded in the mounting notch 518, and the top of the siphon member 530 is flush with the top edge of the side frame 512. The design of the mounting notch 518 and the mounting block 533 provides a more stable connection between the siphon member 530 and the side frame 512. Once the mounting block 533 is embedded in the mounting notch 518, it effectively prevents the siphon member 530 from moving horizontally, further improving the stability of the connection. The top of the siphon member 530 is flush with the top edge of the side frame 512, which not only enhances the overall aesthetics of the pre-filter but also avoids the awkwardness caused by the different heights of the components, enhancing the overall quality of the product. The matching design of the mounting block 533 and the mounting notch 518 makes the installation process of the siphon component 530 more intuitive and simple. The user only needs to align the mounting block 533 with the mounting notch 518 and embed it, without the need for additional fixing steps, thereby simplifying the installation process.

[0066] Reference Figure 3 and Figure 4 In order to achieve the snap-fit ​​fixation between the siphon member 530 and the side frame 512, the siphon member 530 is also provided with a fixing protrusion 534, and the side frame 512 is also provided with a fixing slot 519 that passes through the side frame 512 below the mounting notch 518. The siphon member 530 is snap-fitted to the side frame 512 by the fixing protrusion 534 and the fixing slot 519. On the basis of the mounting notch 518 and the mounting block 533, the snap-fit ​​fixation between the siphon member 530 and the side frame 512 is achieved by adding the fixing protrusion 534 and the fixing slot 519, which significantly improves the stability and reliability of the fixation. Traditional fixing methods may require additional fasteners (such as screws, nuts, etc.), and the installation process is cumbersome and time-consuming. The snap-fit ​​fixing method simplifies the installation steps, improves installation efficiency, and reduces installation difficulty and cost.

[0067] Reference Figure 3The outer frame 50 forms the bottom flow channel 501b of the siphon flow channel 501 through the bottom cover 520 and the bottom plate 511. In one embodiment, the outer frame 50 is provided with a filter assembly 30. The outer frame 50 or the filter assembly 30 is provided with an electric drive / manual drive cleaning mechanism. The cleaning mechanism cleans the impurities attached to the surface of the filter mesh and then discharges them through the drain valve. Through the multiple siphon holes 531 of the lateral flow channel, the impurities, particulate matter, etc. intercepted by the filter assembly 30 can be more effectively guided to the bottom flow channel 501b and finally discharged through the drain outlet 102. Figure 1 and Figure 2 In one embodiment, the exoskeleton 50 can rotate relative to the filter assembly 30. For example, the exoskeleton 50 is provided with an electric drive rotation structure or a manual drive rotation structure, which drives the exoskeleton 50 to rotate; or, the exoskeleton 50 is driven by the raw water entering the filter bottle 10 to rotate relative to the filter assembly 30, so that the water in the filter bottle 10 generates a vortex and is discharged from the sewage outlet 102 of the filter bottle 10 more quickly; in a further solution, the exoskeleton 50 can also be provided with a scraping and washing device 90. During the rotation of the exoskeleton 50 with the water flow, the impurities on the filter screen are cleaned by the scraping and washing device 90, and the impurities are sucked into the siphon channel 501 through the siphon hole 531, and discharged into the sewage outlet 102 through the first discharge port 503.

[0068] The base 511 and side frames 512 can be integrally formed, or the side frames 512 can be fixed to the base 511 via screws or other means. The base 511 of the cartridge holder 510 is circular, and the side frames 512 surround the base 511 and are designed around the outer edge of the filter assembly 30. The side frames 512 generally appear as a portion of an annular or cylindrical shape, but are not completely enclosed to allow water to flow through. The shape of the side frames 512 matches the outer shape of the filter assembly 30, ensuring a close fit and support for the filter assembly 30 while maintaining effective water circulation around the filter assembly 30.

[0069] Reference Figure 3 In one embodiment, the bottom cover 520 and the base 511 cover each other to form the bottom flow channel 501b. In one embodiment, the bottom flow channel 501b is provided on the bottom cover 520. To facilitate disassembly, the bottom cover 520 and the base 511 are detachably connected, such as by screws or snaps. The detachable design of the bottom cover 520 makes cleaning and maintenance simple and convenient, allowing users to complete these tasks themselves without the need for professional service visits, thereby reducing maintenance costs.

[0070] To facilitate installation of the bottom cover 520 and the chassis 511, the chassis 511 is provided with a protruding flow channel 515. The flow channel 515 is open upward, and the notch of the flow channel 515 is connected to the side wall flow channel 501a. The bottom of the flow channel 515 opposite the notch extends to the center of the chassis 511. The bottom cover 520 engages with the flow channel 515 and seals the flow channel 515 to form the bottom flow channel 501b. The design of the flow channel 515 enhances the stability of the connection between the chassis 511 and the bottom cover 520, making the entire exoskeleton 50 structure more stable and less prone to loosening or deformation. The upward-open design of the flow channel 515 makes installation of the bottom cover 520 even more convenient. The user can engage the bottom cover 520 with the flow channel 515 without complicated operations, completing the formation of the bottom flow channel 501b. In other embodiments, the bottom cover 520 can be fixed to the chassis 511 by screws or by magnetic attraction.

[0071] Specifically, multiple first discharge ports 503 are arranged at intervals along the circumference of the cartridge rack 510, and the number of the first discharge ports 503 corresponds to the number of the siphon flow channels 501, and the first discharge ports 503 are connected to a bottom flow channel 501b. In order to ensure the drainage effect, it is ensured that each bottom flow channel 501b has a corresponding first discharge port 503. In order to simplify the installation process and facilitate the connection between the bottom cover 520 and the cartridge rack 510, the bottom cover 520 and the bottom plate 511 enclose a bottom flow channel 501b.

[0072] Reference Figure 5 In order to enhance drainage efficiency, the chassis 511 is further provided with a second drain port 504, which connects the inside of the cartridge rack 510 and the outside of the cartridge rack 510. The addition of the second drain port 504 provides an additional drainage channel for the accumulated water inside the cartridge rack 510, which helps to speed up the water flow and improve drainage efficiency. During the use of the filter, especially under high flow or high pressure conditions, this design can significantly reduce the risk of water accumulation inside the cartridge rack 510, ensuring the smooth operation of the filter. By promptly draining the accumulated water inside the cartridge rack 510, the residence time of the water between the filter assembly 30 and the cartridge rack 510 can be reduced, which helps to improve the overall filtering effect of the pre-filter.

[0073] Depending on the amount of water accumulated inside the drum rack 510 and the drainage requirements, multiple second drain ports 504 can be provided on the chassis 511. These second drain ports 504 can be evenly distributed or arranged specifically based on the area of ​​water accumulation to maximize drainage efficiency. Specifically, multiple second drain ports 504 are provided, each located between two adjacent siphon channels 501 and closer to the outside of the chassis 511 relative to the first drain ports 503. The second drain ports 504 are arranged symmetrically with the first drain ports 503 to maintain the balance and aesthetics of the overall structure. This arrangement also helps to disperse drainage pressure and improve drainage efficiency.

[0074] Specifically, in this embodiment, three siphon channels 501 are designed on the exoskeleton 50, each of which is evenly distributed at 120°. The wall of the siphon element 530 is designed with seven siphon holes 531, each of which is elliptical in shape. The number and layout of the siphon holes 531 are related to the number and structure of the modules in the filter assembly 30 and can be flexibly arranged. Water in the siphon channel 501 flows to the bottom channel 501b and flows out from the first discharge port 503. The three siphon channels 501 at the bottom of the exoskeleton 50 are designed with an angled first discharge port 503 near the center. The first discharge port 503 is set at an oblique angle so that the water flow can be inclined to enter the bottom impeller assembly 40, thereby improving the rotation efficiency of the impeller; in the scheme without the impeller assembly 40, the siphon flow channel 501 is directly connected to the sewage outlet 102 through the impeller; the sewage valve is opened, and the negative pressure generated by the siphon effect is used to adsorb impurities on the surface of the filter screen, thereby reducing the adhesion of impurities and improving the filtering effect; by designing the bottom flow channel 501b between the chassis 511 and the bottom cover 520, compared with setting a through bottom flow channel 501b inside the chassis 511, on the one hand, the structure is simple and the manufacturing is convenient; on the other hand, it is convenient to clean, reducing the possibility of dirt accumulating inside and clogging the filter screen, and avoiding siphon failure; and compared with the existing scheme, it is easier to increase the size of the siphon flow channel 501 to improve the cleaning effect.

[0075] In this embodiment, the exoskeleton 50 rotates relative to the filter assembly 30. The exoskeleton 50 can be rotated by electric drive or manual drive to generate a vortex in the water filter chamber 101. A water distributor 60 that changes the direction of water flow can also be provided on the top of the pre-filter. The exoskeleton 50 is provided with a water flow drive 502 so that the exoskeleton 50 can rotate with the help of water flow; and a brush and other structures can be further provided on the exoskeleton 50 to clean the filter screen of the filter assembly 30, thereby achieving the effect of cleaning and improving the sewage discharge; and an impeller assembly 40 is further provided at the bottom of the pre-filter to drive the water flow in the water filter chamber 101 to rotate, thereby improving the discharge of sewage during the flushing process.

[0076] Reference Figure 1 and Figure 7 The impeller assembly 40 is provided with an impeller body 440, which can rotate under the drive of water flow, thereby helping to enhance the flushing force of the water flow and making it easier for impurities in the water filter chamber 101 to be brought into the impeller assembly 40 for sewage treatment.

[0077] Reference Figure 7 When the drain valve is opened, water flows into the impeller assembly 40 through the water inlet, and the impeller body 440 rotates under the impact of the water flow. In order to improve drainage efficiency, the impeller assembly 40 is sealed with the filter bottle 10.

[0078] When the drain valve is opened, the impact of the water flow causes impeller body 440 to rotate, further propelling the water and generating centrifugal force. This centrifugal force helps push impurities and residues in the water toward the edges of impeller chamber 401, where they gather. Finally, the impure wastewater passes through impeller assembly 40 and exits filter bottle 10, completing the water purification and sewage disposal process.

[0079] Common methods for flushing the pre-filter include direct flushing and backflush. In direct flushing, water flows along the tap water flow to flush the intercepting surface of the filter assembly 30, removing particulate matter from the filter screen. Backflush involves a reverse flow of water, where the tap water pressure penetrates from the inner wall of the filter screen to the outer wall, forming a high-velocity water column that flushes particulate matter from the filter screen from the inside out.

[0080] The impeller assembly 40 can be used in both direct and reverse flush modes. It can also be used in conjunction with a siphon mode. The exoskeleton 50 is provided with a siphon channel 501, which utilizes the suction force generated by the siphon principle to help remove impurities accumulated on the filter. The structure of the exoskeleton 50 and its connection to the impeller assembly 40 are described above and will not be repeated here.

[0081] The sealed connection between impeller assembly 40 and filter bottle 10 ensures the system's airtightness, preventing inconveniences such as water leakage during use. In this embodiment, the sealing member is configured as a sealing ring, the outer circumference of which abuts against filter bottle 10. In other embodiments, the sealing member can also be a gasket, sealing tape, water seal, sealant, soft packing, etc.

[0082] A water flow driver 502 is arranged on the inner periphery of the exoskeleton 50. During normal filtering operation, water entering from the valve head 20 flows through the upper water distributor 60 of the filter assembly 30, forming a swirling flow. This flushing water flow driver 502 drives the exoskeleton 50 to rotate. During this operation, the exoskeleton 50 rotates independently of the bottom impeller. During normal filtering, the bottom impeller body 440 is not hydraulically flushed. During the sewage discharge mode, the bottom impeller body 440 rotates under the flushing of the water, driving the exoskeleton 50 to rotate as well. Therefore, the exoskeleton 50 can rotate in both filtering and sewage discharge modes.

[0083] The exoskeleton 50 is provided with a water flow driving member 502, so that the exoskeleton 50 can rotate with the help of water flow; and a scraping device 90 can be further provided on the exoskeleton 50 to clean the filter screen of the filter component 30, thereby achieving the effect of cleaning and improving the sewage discharge. The scraping device 90 can be a brush or a rubber strip. The scraping device 90 can be set to clean the inner wall of the filter bottle 10 alone; or clean the filter component 30 alone; or clean both at the same time.

[0084] In summary, the impeller assembly 40 can be independently combined with the scraping device 90. The impeller's rotation drives the scraping device 90 to clean the filter surface, effectively removing impurities adhering to the filter and reducing the frequency and difficulty of manual cleaning. The scraping device 90 can also be arranged on the exoskeleton 50. The exoskeleton 50 can rotate relative to the filter assembly 30 to drive the scraping device 90 to clean. To improve the sewage removal effect, the exoskeleton 50 can also be provided with a siphon flow channel 501.

[0085] The utility model also proposes a water system, which includes the aforementioned pre-filter. The specific structure of the pre-filter is shown in FIG. Figures 1 to 7 Since this water system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0086] Among them, the water use system at least includes relevant components from the pre-filter to the water use end. For example, the water use system may include household appliances such as water heaters, dishwashers, and water dispensers, and may also include accessories such as water pipes for domestic water use throughout the house.

[0087] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An exoskeleton for a pre-filter, characterized in that: The exoskeleton is configured to be rotatably sleeved on the outside of the filter assembly of the pre-filter, and the exoskeleton includes: a drum rack comprising a base and side frames provided on the base; and The siphon flow channel includes a side wall flow channel provided on the side frame and a bottom flow channel provided on the chassis, the side wall flow channel is connected to the bottom flow channel, the side wall flow channel is provided with a siphon hole connected to the inner cavity of the cartridge frame, and the siphon flow channel is provided with a first discharge port connected to the outside of the cartridge frame.

2. The exoskeleton according to claim 1, wherein: The outer frame further includes a siphon component which is enclosed with the side frame to form the side wall flow channel, and the siphon hole is provided in the siphon component.

3. The exoskeleton according to claim 2, wherein: The siphon member is slidably connected to the side frame, and the siphon member is clamped and fixed on the side frame.

4. The exoskeleton according to claim 3, wherein: A slideway is protruded from the inner surface of the side frame, and the slideway extends axially to both ends of the side frame. Slide rails are provided on both sides of the siphon member, and the siphon member is inserted into the slideway through the slide rails.

5. The exoskeleton according to claim 3, wherein: The top edge of the side frame is provided with a mounting notch, the top of the siphon member is provided with a mounting block facing the side frame, the mounting block is embedded in the mounting notch, and the top of the siphon member is flush with the top edge of the side frame.

6. The exoskeleton according to claim 5, wherein: The siphon member is further provided with a fixing clamping protrusion, and the side frame is further provided with a fixing clamping slot penetrating the side frame below the installation notch. The siphon member is fixed to the side frame by clamping the fixing clamping protrusion with the fixing clamping slot.

7. The exoskeleton according to claim 1, wherein: The exoskeleton further comprises a bottom cover which is detachably connected to the chassis and encloses the chassis to form the bottom flow channel.

8. The exoskeleton according to claim 7, wherein: The chassis is provided with a flow channel groove, which is open upward and connected to the side wall flow channel. The flow channel groove extends to the center of the chassis. The bottom cover is snap-fitted with the flow channel groove and seals the opening of the flow channel groove to form the bottom flow channel.

9. The exoskeleton according to claim 1, wherein: There are multiple siphon flow channels, and the multiple siphon flow channels are evenly distributed along the circumference of the cartridge rack.

10. The exoskeleton according to claim 9, wherein: The number of the first discharge ports corresponds to the number of the siphon channels, and one of the first discharge ports is connected to one of the bottom channels.

11. The exoskeleton according to claim 1, wherein: The first discharge ports are all arranged to be inclined in the same direction from the upper surface of the bottom plate toward the lower surface.

12. The exoskeleton according to claim 11, wherein: The first discharge ports are all arranged at the end of the bottom flow channel.

13. The exoskeleton according to claim 1, wherein: The bottom plate is further provided with a second discharge port, which communicates with the inner cavity of the cartridge rack and the outside of the cartridge rack.

14. The exoskeleton according to claim 13, wherein: There are multiple second discharge ports, one of which is located between two adjacent siphon channels, and is closer to the outside of the bottom plate than the first discharge port.

15. The exoskeleton according to claim 1, wherein: The outer frame is also provided with a scraping device for cleaning the filter assembly of the pre-filter and / or the filter bottle of the pre-filter.

16. The exoskeleton according to claim 1, wherein: A water flow driving component is arranged on the inner periphery of the outer frame, and the water flow driving component can drive the outer frame to rotate under the drive of water flow.

17. A pre-filter, characterized in that: The invention comprises a filter bottle, a filter assembly and an exoskeleton according to any one of claims 1 to 16, wherein the exoskeleton is arranged between the filter bottle and the filter assembly.

18. A water system, characterized in that: Comprising the pre-filter as claimed in claim 17.

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