Outer framework, pre-filter and water consumption system

Abstract

The invention discloses an outer framework, a pre-filter and a water system, and relates to the technical field of pre-filters, the outer framework comprises a cylinder frame and a bottom cover, the cylinder frame comprises a chassis and a side frame arranged on the chassis, and a siphon flow channel comprises a side wall flow channel and a bottom flow channel communicated with the side wall flow channel. The side wall flow channel is arranged corresponding to the side frame and is provided with a siphon hole communicated with the inner side of the barrel frame; the bottom cover and the base plate are combined in a covering mode to form the bottom flow channel, the base plate is provided with a first discharge outlet communicated with the outer portion of the barrel frame, and the bottom flow channel is communicated with the first discharge outlet. The siphon structure and the installation mode of the outer framework are improved, a siphon flow channel is conveniently formed through machining and is easy to clean, and blockage and influence on the siphon effect are avoided.

Description

Technical Field

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

[0002] 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. In order to improve the cleaning effect, the prior art utilizes the siphon principle and sets a siphon flow channel on the exoskeleton. The siphon flow channel can generate strong suction and improve the cleaning efficiency. However, the structure of the existing siphon flow channel is complex and the siphon flushing effect is poor. Summary of the invention

[0003] The main purpose of the present invention is to propose an exoskeleton, a pre-filter and a water use system using the exoskeleton, aiming to improve the siphon tube structure and installation method of the exoskeleton, facilitate processing to form a siphon flow channel, and easily clean the siphon flow channel to avoid blockage and affect the siphon effect.

[0004] To achieve the above-mentioned purpose, the present invention proposes an exoskeleton, which forms a siphon flow channel, and the exoskeleton is configured to be rotatably mounted on the outside of the filter assembly of the pre-filter, the exoskeleton includes a cartridge rack and a bottom cover, the cartridge rack includes a chassis and a side frame arranged on the chassis, the siphon flow channel includes a side wall flow channel and a bottom flow channel connected to the side wall flow channel, the side wall flow channel is arranged corresponding to the side frame, the side wall flow channel is provided with a siphon hole connected to the inner side of the cartridge rack; the bottom cover and the chassis are covered to form the bottom flow channel, the chassis is provided with a first discharge port connected to the outside of the cartridge rack, and the bottom flow channel is connected to the first discharge port.

[0005] In one embodiment, the bottom cover is detachably connected to the bottom plate.

[0006] In one embodiment, the chassis is provided with a flow channel, the flow channel is open upward, the flow channel is connected with the side wall flow channel, the flow channel extends to the center of the chassis, and the bottom cover is snap-fitted with the flow channel and seals the opening of the flow channel to form the bottom flow channel.

[0007] In one embodiment, the bottom cover covers the flow channel groove, the outer side wall of the flow channel groove is provided with a buckle, the bottom cover is provided with a buckle groove corresponding to the buckle, and the bottom cover is fixed to the chassis by the buckle and the buckle groove.

[0008] In one embodiment, a buckle is provided on opposite sides of the flow channel groove, and the chassis is provided with an avoidance gap passing through the chassis corresponding to the buckle. After the bottom cover is covered with the chassis, the bottom cover covers the avoidance gap.

[0009] In one embodiment, a plurality of the siphon flow channels are provided at intervals along the circumferential direction of the cartridge frame, the first discharge ports are provided corresponding to the number of the siphon flow channels, and one of the first discharge ports is communicated with one of the bottom flow channels.

[0010] In one embodiment, the bottom cover includes a plurality of covering parts, and the covering parts and the bottom plate are combined to form the bottom flow channel.

[0011] In one embodiment, the first discharge ports are all arranged to be inclined along the same direction from the upper surface of the bottom plate toward the lower surface.

[0012] In one embodiment, the first discharge ports are all disposed at the ends of the bottom flow channels.

[0013] In one embodiment, the exoskeleton also includes a plurality of siphon parts corresponding to the number of the siphon flow channels, the siphon holes are arranged on the siphon parts, a siphon part and the side frame are enclosed to form a side wall flow channel, the siphon part is slidably connected to the side frame, and the siphon part is clamped and fixed on the side frame.

[0014] 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.

[0015] In one embodiment, the bottom plate is further provided with a second discharge port, and the second discharge port communicates with the inside of the cartridge rack and the outside of the cartridge rack.

[0016] 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 is closer to the outer side of the bottom plate than the first discharge port.

[0017] In one embodiment, the outer frame 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.

[0018] 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.

[0019] 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.

[0020] In one embodiment, the pre-filter further includes a valve head, and a water distributor disposed on the valve head and / or the filter bottle, the valve head having a water inlet, and the raw water entering the filter bottle from the water inlet passes through the water distributor to generate a vortex.

[0021] In one embodiment, a water retaining ring extending in a direction away from the bottom is provided at the bottom of the outer frame, and the first discharge port is provided in the water retaining ring.

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

[0023] The exoskeleton of the technical solution of the present invention can be used in the 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 to pass 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 through the sewage outlet. By designing the bottom flow channel between the chassis and the bottom cover, compared with setting a through bottom flow channel inside the chassis, on the one hand, the structure is simple and the manufacturing is convenient; on the other hand, it is easy to clean, reducing the possibility of dirt accumulating inside and clogging the filter screen, avoiding siphon failure; and compared with the existing solution, it is easier to increase the size of the siphon flow channel and improve the cleaning effect. In addition, the rotation of the exoskeleton can also promote the swirl of the water flow, further enhancing the cleaning effect. 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

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

[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 It is a schematic diagram of the exploded structure of the cartridge holder and the bottom cover in an embodiment of the exoskeleton;

[0028] Figure 4 It is a schematic structural diagram of a cartridge holder and a siphon member in an embodiment of an exoskeleton;

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

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

[0031] Figure 7 This is a schematic diagram of the structure 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, outer frame; 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; 511a, avoidance gap; 512, side frame; 514, water retaining ring; 515, flow channel groove; 516, buckle; 517, slideway; 518, installation gap;

[0039] 520, bottom cover; 521, buckle groove; 522, cover closing part;

[0040] 530, siphon member; 531, siphon hole; 532, slide rail; 533, mounting block;

[0041] 60. Water distributor;

[0042] 90. Scraping and washing 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 described embodiments 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 creative work are 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 indication 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 used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. 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 contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0047] 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. In order to improve the cleaning effect, the prior art utilizes the siphon principle and sets a siphon flow channel on the exoskeleton. The siphon flow channel can generate strong suction and improve the cleaning efficiency. However, the structure of the existing siphon flow channel is complex, the siphon flushing effect is poor, and the impurities on the surface of the filter cannot be well adsorbed.

[0048] To this end, the present invention proposes an exoskeleton, a pre-filter and a water use system using the exoskeleton. By improving the siphon tube structure and installation method of the exoskeleton, it is convenient to process and form a siphon flow channel, and the siphon flow channel is easy to clean to avoid blockage and affect the siphon effect.

[0049] Water use systems, such as whole-house water purification systems, are usually equipped with pre-filters, and use pre-filters to filter large particles from tap water, which not only ensures the safety of residents' water use, but also extends the service life of home appliances, prevents blockage of household water pipes, and improves the health of residents. The pre-filter is the first coarse filtration device in the whole-house water purification system. It is usually equipped with a stainless steel filter, which is a physical filtration device that is mainly used to intercept large particles larger than 40 microns to protect the safety of back-end water use.

[0050] See also Figure 1The 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. The water filter chamber 101 is provided with a filter assembly 30 and an exoskeleton 50, and an impeller assembly 40 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 limitations on this.

[0051] A water distributor 60 is arranged 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 driven by 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 arranged in 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 more quickly.

[0052] 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 or a PP cotton filter. When water flows through, these filters can intercept large particles of impurities in the water, remove some precipitated impurities, rust, sand, mud, bacteria and other particulate impurities generated in the pipeline, and provide better protection for water purifiers, washing machines, showers, high-end faucets, downstream pipelines, etc., reducing the risk of damage to these devices due to clogging by impurities.

[0053] Reference Figure 1 and Figure 7 The pre-filter is usually a "T"-shaped structure, with the upper "horizontal" position having the water inlet and outlet 202 at the left and right ends, the lower "vertical" position having the body and the internal cylindrical filter assembly 30, and the bottom end being the sewage outlet 102, which is controlled to open and close by a valve.

[0054] The valve head 20 is usually made of copper alloy, and the connection between the valve head 20 and the filter bottle 10 is mainly threaded connection. For example, the valve head 20 is provided with an external threaded tube, and the bottle mouth of the filter bottle 10 is provided with an internal thread threaded with the external threaded tube. In order to reduce the production difficulty of the pre-filter, reduce the inspection requirements of its assembly results, and reduce the material cost of the valve head 20. In this embodiment, the connection between the filter bottle 10 and the valve head 20 is locked by fasteners after splicing.

[0055] 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 device 90 is crucial. In the prior art, there are scraping devices 90 driven by motors, scraping devices 90 driven by impellers, etc.; there is also a self-rotating scraping function that uses the impact force of the water flow itself.

[0056] In the present invention, the siphon flow of the exoskeleton 50 is improved. The exoskeleton 50 can be arranged in the water filter chamber 101 alone, 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.

[0057] Specifically, the present invention improves the siphon tube structure and installation method of the outer frame 50, so as to facilitate processing to form the siphon flow channel 501 and to easily clean the siphon flow channel 501 to avoid blockage and affect the siphon effect.

[0058] Please combine Figure 1 and Figure 7 , and refer to Figures 2 to 6 In one embodiment of the present invention, 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 disposed on the bottom plate 511, the siphon channel 501 includes a side wall channel 501a and a bottom channel 501b connected to the side wall channel 501a, the side wall channel 501a is disposed corresponding to the side frame 512, the side wall 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, the bottom channel 501b is connected to the first discharge port 503, the bottom cover 520 covers the bottom plate 511 to form the bottom channel 501b or the bottom channel 501b is disposed on the bottom cover 520.

[0059] The exoskeleton 50 of the technical solution of the present invention can be used in the 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 to pass through the filter assembly 30 more smoothly, thereby improving the filtering 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 the 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, and avoiding siphon failure; and compared with the existing solution, it is easier to increase the size of the siphon flow channel 501 and improve the cleaning effect.

[0060] The siphon flow channel 501 is in an "L" shape, the side wall flow channel 501a is the vertical part of the "L" shape, the bottom flow channel 501b is the horizontal part of the "L" shape, and the side wall flow channel 501a is arranged corresponding to the side frame 512, which means that the side wall flow channel 501a is arranged on the side frame 512 part, and does not limit the formation method of the side wall flow channel 501a.

[0061] Reference Figure 3 The 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 sleeved with the filter assembly 30, and the outer frame 50 or the filter assembly 30 is provided with an electric drive / manual drive cleaning mechanism, which cleans the impurities attached to the surface of the filter net 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 port 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 to drive 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.

[0062] The bottom plate 511 and the side frame 512 may be integrally formed, or the side frame 512 may be fixed to the bottom plate 511 by screws or the like. The bottom plate 511 of the cartridge holder 510 is circular, and the side frame 512 surrounds the bottom plate 511 and is designed around the outer edge of the filter assembly 30. The side frame 512 is generally a part of a ring or cylinder, but is not completely closed to allow water to flow through. The shape of the side frame 512 matches the shape of the filter assembly 30, ensuring that it can fit tightly and support the filter assembly 30, while maintaining effective circulation of water around the filter assembly 30.

[0063] Reference Figure 3 In one embodiment, the bottom cover 520 and the bottom plate 511 are covered to form the bottom flow channel 501b. In one embodiment, the bottom flow channel 501b is provided on the bottom cover 520. In order to facilitate disassembly, the bottom cover 520 and the bottom plate 511 are detachably connected, such as by screw locking, snap connection, etc. The detachable bottom cover 520 design makes cleaning and maintenance simple and convenient, and users can complete these tasks by themselves without having to invite professionals to provide door-to-door service, thereby reducing maintenance costs.

[0064] In order to facilitate the installation of the bottom cover 520 and the chassis 511, the chassis 511 is convexly provided with a flow channel groove 515, the flow channel groove 515 is open upward, the notch of the flow channel groove 515 is connected to the side wall flow channel 501a, and the groove bottom of the flow channel groove 515 relative to the notch extends to the center of the chassis 511. The bottom cover 520 and the flow channel groove 515 are snap-fitted and sealed to form the bottom flow channel 501b. The design of the flow channel groove 515 enhances the connection stability between the chassis 511 and the bottom cover 520, making the entire exoskeleton 50 structure more stable and not prone to loosening or deformation. The upward open design of the flow channel groove 515 makes the installation of the bottom cover 520 more convenient, and the user can snap-fit ​​the bottom cover 520 with the flow channel groove 515 without complicated operations to complete the formation of the bottom flow channel 501b.

[0065] Reference Figure 3 In order to ensure the stability of the fixing, the bottom cover 520 is provided with a flow channel groove 515, and a buckle 516 is provided on the outer side wall of the flow channel groove 515. The bottom cover 520 is provided with a buckle groove 521 corresponding to the buckle 516, and the bottom cover 520 is fixed to the chassis 511 by the buckle 516 and the buckle groove 521. The stability can be further enhanced by the design of the buckle 516 and the buckle groove 521. The close fit between the buckle 516 and the buckle groove 521 can prevent the bottom cover 520 from loosening or falling off due to water flow impact or external force during use. The design of the buckle 516 and the buckle groove 521 puts forward higher requirements on the installation accuracy, which helps to ensure that the bottom cover 520 can be accurately aligned and fixed with the flow channel groove 515 during installation, avoiding the sealing problem or structural instability caused by improper installation. The design of the buckle 516 and the buckle groove 521 makes the removal and installation of the bottom cover 520 easier and faster.

[0066] Reference Figure 3 In order to facilitate manufacturing, the buckle 516 is arranged on the opposite sides of the flow channel groove 515, and the chassis 511 is provided with an avoidance gap 511a that passes through the chassis 511 corresponding to the buckle 516. After the bottom cover 520 is covered with the chassis 511, the bottom cover 520 blocks the avoidance gap 511a. By arranging the buckle 516 on the opposite sides of the flow channel groove 515 and correspondingly opening the avoidance gap 511a on the chassis 511, the mold design and manufacturing process are simplified. The setting of the avoidance gap 511a makes it easier to form the buckle 516 structure in the manufacturing process such as injection molding or stamping, reducing the manufacturing cost and difficulty. Although the opening of the avoidance gap 511a seems to weaken the local strength of the chassis 511, through reasonable design and the shielding of the bottom cover 520, it will not actually have a significant impact on the overall structural strength. At the same time, the buckle 516 is located on the opposite sides of the flow channel groove 515, which can more effectively disperse and resist external forces and maintain the stability of the structure. The avoidance gap 511a is completely covered after the bottom cover 520 and the chassis 511 are covered, and will not affect the appearance of the pre-filter. This helps to improve the overall image of the product and the user's visual experience. The design of the buckle 516 still retains the characteristics of easy disassembly and easy installation, making the maintenance of the bottom cover 520 simple and quick. When the user performs operations such as cleaning or replacing the filter assembly 30, the bottom cover 520 can be easily disassembled and installed.

[0067] Specifically, a plurality of 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 channels 501, and the first discharge ports 503 are connected to a bottom channel 501b. To ensure the drainage effect, it is ensured that each bottom channel 501b has a corresponding first discharge port 503. To simplify the installation process and facilitate the connection between the bottom cover 520 and the cartridge rack 510, the bottom cover 520 includes a plurality of cover portions 522, and the cover portion 522 and the bottom plate 511 are enclosed to form a bottom channel 501b. By designing a plurality of cover portions 522 to be connected to the cartridge rack 510, each cover portion 522 and the bottom plate 511 are enclosed to form a bottom channel 501b, so that the connection between the bottom cover 520 and the cartridge rack 510 is more convenient and accurate.

[0068] Specifically, the siphon flow channel 501 is provided with three, and the three covering parts 522 are like "fan blades". Each siphon flow channel 501 is provided with an independent first discharge port 503. In order to drain water smoothly, the first discharge ports 503 are all inclined in the same direction from the upper surface of the chassis 511 to the lower surface. The inclined first discharge port 503 can guide the water flow to flow out more smoothly, reducing the retention and vortex phenomenon of the water flow in the bottom flow channel 501b. This helps to avoid the accumulation of impurities in the bottom flow channel 501b and keep the pre-filter clean and efficient. The first discharge port 503 is inclined clockwise or counterclockwise along the axial direction. The inclined first discharge port 503 also has a certain anti-backflow function and can also make the drainage form a vortex. The efficient design of the bottom flow channel 501b and the first discharge port 503 enables the pre-filter to discharge impurities and sewage faster, improving the filtering effect and the overall performance of the system. In order to avoid water outlet interference, the first discharge port 503 is arranged at the end of the bottom flow channel 501b.

[0069] The side frame 512 extends in the axial direction, the filter assembly 30 is arranged in the side frame 512, and the side frame 512 forms a side wall flow channel 501a constituting the siphon flow channel 501. There are multiple side wall flow channels 501a, such as two, three or even more. Siphon holes 531 are arranged on the side wall, which are part of the side wall flow channel 501a and are used to guide water flow from the outside of the filter assembly 30 through the side wall flow channel 501a into the bottom flow channel 501b. The size, number and distribution of the siphon holes 531 are carefully designed to ensure uniform distribution of water flow and effective filtration.

[0070] The side wall flow channel 501a can be formed by the side frame 512 itself; it can also be a part formed with the side wall flow channel 501a separately. In the present embodiment, the siphon member 530 and the side frame 512 constituting the side wall flow channel 501a together form the side wall flow channel 501a. The number of siphon members 530 corresponds to that of the siphon flow channels 501, and the siphon holes 531 are arranged on the siphon member 530.

[0071] Reference Figure 4 There are various ways to fix the siphon member 530 to the side frame 512. For example, the siphon member 530 can be locked and fixed to the side frame 512; this is not convenient during installation or maintenance. In this embodiment, in order to facilitate and firmly install, the siphon member 530 is slidably connected to the side frame 512, and the siphon member 530 is snap-fitted and fixed 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 fixed to the side frame 512, and it is also easy to disassemble, thereby improving the convenience of operation.

[0072] Specifically, a slideway 517 is convexly provided on the inner surface of the side frame 512, and the slideway 517 extends to both ends of the side frame 512 respectively. Slide rails 532 are provided on both sides of the siphon member 530, and the siphon member 530 is inserted into the slideway 517 through the slide rails 532. The matching design of the slide rails 532 and the slideway 517 can ensure that the position of the siphon member 530 on the side frame 512 is more stable, reducing the risk of loosening or displacement caused by vibration or water flow impact, thereby improving the overall stability and reliability of the pre-filter. The stable connection method reduces the risk of failure caused by loose or displacement of components, and improves the overall performance and reliability of the pre-filter.

[0073] In order to improve the consistency of appearance and enhance the stability of the connection, the connection method between the side frame 512 and the siphon member 530 is further defined. Specifically, the top edge of the side frame 512 is provided with a mounting notch 518, and the top of the siphon member 530 is provided with a mounting block 533 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. By adding the mounting notch 518 and the matching design of the mounting block 533, the connection between the siphon member 530 and the side frame 512 is more stable. After the mounting block 533 is embedded in the mounting notch 518, it can effectively prevent the siphon member 530 from moving in the horizontal direction, 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 abruptness caused by the different heights of the components, and enhances the overall texture 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.

[0074] Reference Figure 3 and Figure 4 On the basis of the installation notch 518 and the installation block 533, in order to realize the clamping fixation between the siphon member 530 and the side frame 512, a clamping structure can be added to realize the clamping fixation between the siphon member 530 and the side frame 512, which significantly improves the stability and reliability of the fixation. Compared with the traditional fixing method, additional fasteners (such as screws, nuts, etc.) may be required, and the installation process is cumbersome and time-consuming. The clamping fixation method simplifies the installation steps, improves the installation efficiency, and reduces the difficulty and cost of installation.

[0075] Reference Figure 5In order to enhance the drainage efficiency, the chassis 511 is also provided with a second discharge port 504, and the second discharge port 504 is connected to the inner side of the cartridge rack 510 and the outer side of the cartridge rack 510. The addition of the second discharge port 504 provides an additional discharge channel for the accumulated water inside the cartridge rack 510, which helps to speed up the water flow and improve the 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 and ensure the smooth operation of the filter. By discharging the accumulated water inside the cartridge rack 510 in a timely manner, the retention time of 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.

[0076] According to the water accumulation inside the drum rack 510 and the drainage demand, a plurality of second discharge ports 504 can be provided on the chassis 511. These second discharge ports 504 can be evenly distributed or arranged in a targeted manner according to the water accumulation area to maximize the drainage efficiency. Specifically, a plurality of second discharge ports 504 are provided, and the second discharge ports 504 are arranged between two adjacent siphon channels 501 and close to the outside of the chassis 511 relative to the first discharge port 503. The second discharge port 504 is arranged at a position symmetrical to the first discharge port 503 to maintain the balance and beauty of the overall structure. This arrangement also helps to disperse the drainage pressure and improve the drainage efficiency.

[0077] Specifically, in this embodiment, three siphon channels 501 are designed on the outer frame 50, and the three siphon channels 501 are evenly distributed at 120 degrees. Seven siphon holes 531 are designed on the wall of the siphon member 530, and the shape of the siphon holes 531 is elliptical. The number and layout of the siphon holes 531 are related to the number and structure of the modules of the filter assembly 30, and can be flexibly arranged. The water inside 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 outer frame 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 where the impeller assembly 40 is not set, 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 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 easy to clean, reducing the possibility of dirt accumulating inside and clogging the filter screen, thereby avoiding siphon failure; and compared with the existing scheme, it is easier to increase the size of the siphon flow channel 501 and improve the cleaning effect.

[0078] 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 for changing 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 driving member 502 so that the exoskeleton 50 can rotate with the help of the water flow. Brushes 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 discharge of sewage. 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.

[0079] Reference Figure 7 Furthermore, in order to allow the water in the siphon channel 501 of the outer frame 50 to flush the impeller assembly 40 and discharge, in this embodiment, a water retaining ring 514 facing the impeller assembly 40 is provided at the bottom of the outer frame 50, and the water retaining ring 514 is sleeved with the impeller assembly 40. The water retaining ring 514 and the impeller assembly 40 cooperate to form an interlocking structure. Under the action of the interlocking structure, the water flow path in the pre-filter is optimized. Under normal circumstances, the water in the filter bottle 10 is blocked outside the interlocking structure, while the water in the siphon channel 501 can smoothly enter the impeller assembly 40 through the interlocking structure and flow through the impeller assembly 40 for sewage discharge. This design not only ensures the normal filtering function of the pre-filter, but also improves the sewage discharge efficiency and stability.

[0080] Reference Figure 1 and Figure 7 The bottom of the outer frame 50 and the top of the impeller assembly 40 form an "I" cross-section in the axial direction. The vertical part of the I is a water retaining ring 514. The water retaining ring 514 extends to the end face of the impeller assembly 40 so that the first discharge port 503 is connected with the inlet of the impeller assembly 40. The impeller assembly 40 is provided with an impeller body 440. The impeller body 440 can rotate when driven by water flow, which helps to enhance the flushing force of the water flow and make it easier for impurities in the water filter chamber 101 to be brought into the impeller assembly 40 for sewage treatment.

[0081] Reference Figure 7 When the drain valve is opened, water flows in through the two water inlets of the impeller assembly 40, and the impeller body 440 rotates under the impact of the water flow. In order to improve the drainage efficiency, the impeller assembly 40 is sealed and connected to the filter bottle 10.

[0082] When the drain valve is opened, the impact of the water flow causes the impeller body 440 to rotate, further pushing the water flow and generating centrifugal force. This centrifugal force helps to push the impurities and residues in the water to the edge of the impeller chamber 401 and gather them together. Finally, the waste water containing impurities is discharged from the filter bottle 10 through the impeller assembly 40, completing the water purification and sewage discharge process.

[0083] Common methods for flushing the pre-filter include the following: direct flushing mode and back flushing mode. In direct flushing mode, water flushes the intercepting surface of the filter assembly 30 along the flow direction of tap water, and the particulate impurities on the filter are flushed out with the water flow. Back flushing mode involves reverse water flow flushing. The tap water pressure penetrates from the inner wall to the outer wall of the filter, forming a high-flow water column, flushing and discharging the particulate impurities on the filter from the inside out.

[0084] The impeller assembly 40 can be used in both the direct flushing mode and the back flushing mode. The impeller assembly 40 can also be used in the siphon mode. The outer frame 50 is provided with a siphon flow channel 501, and the suction force generated by the siphon principle is used to help remove impurities accumulated on the filter. The structural form of the outer frame 50 and the connection relationship with the impeller assembly 40 can be referred to the above description, and will not be repeated here.

[0085] The sealed connection between the impeller assembly 40 and the filter bottle 10 ensures the airtightness of the system and avoids inconveniences such as water leakage during use. In this embodiment, the sealing member is configured as a sealing ring, and the outer peripheral side of the sealing ring abuts against the filter bottle 10. In other embodiments, the sealing member can also be a gasket, a sealing tape, a water seal, a sealant, a soft filler, etc.

[0086] The inner periphery of the outer frame 50 is provided with a water flow driving member 502. When the pre-filter is filtering water normally, the water coming in from the valve head 20 forms a vortex through the upper water distributor 60 of the filter assembly 30, and the flushing water flow driving member 502 drives the outer frame 50 to rotate. At this time, the rotation of the outer frame 50 does not rely on the bottom impeller to drive, and the bottom impeller body 440 is not hydraulically flushed during normal filtering. In the sewage discharge state, the bottom impeller body 440 rotates by the flushing of the water flow, driving the outer frame 50 to rotate together, so the outer frame 50 can rotate in both the filtering and sewage discharge states.

[0087] The exoskeleton 50 is provided with a water flow driving member 502, so that the exoskeleton 50 can rotate with the help of the 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, so as to achieve the effect of cleaning and improving the sewage discharge. The scraping device 90 can be bristles or rubber strips, and the scraping device 90 can be configured to clean the inner wall of the filter bottle alone; or clean the filter component alone; or both can be cleaned at the same time.

[0088] In summary, the impeller assembly 40 can be combined with the scraping device 90 alone, and the impeller rotation drives the scraping device 90 to clean the filter surface, effectively removing impurities attached to the filter, and reducing the frequency and difficulty of manual cleaning. The scraping device 90 can also be arranged on the outer frame 50, and the outer frame 50 can rotate relative to the filter assembly 30 to drive the scraping device 90 to clean; in order to improve the sewage discharge effect, the outer frame 50 can also be provided with a siphon flow channel 501.

[0089] The present invention also provides a water system, which includes the aforementioned pre-filter. The specific structure of the pre-filter is as follows: Figures 1 to 7 Since the water use 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.

[0090] 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.

[0091] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied 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 outer frame is provided with a siphon flow channel, and the outer frame is configured to be rotatably sleeved outside the filter assembly of the pre-filter, and the outer frame includes: A cartridge rack, the cartridge rack comprising a bottom plate and a side frame arranged on the bottom plate, the siphon flow channel comprising a side wall flow channel and a bottom flow channel connected to the side wall flow channel, the side wall flow channel being arranged corresponding to the side frame, and the side wall flow channel being provided with a siphon hole connected to the inner side of the cartridge rack; and A bottom cover is formed by covering the bottom plate with the bottom plate to form the bottom flow channel. The bottom plate is provided with a first discharge port connected to the outside of the cartridge rack, and the bottom flow channel is connected to the first discharge port.

2. The exoskeleton according to claim 1, characterized in that: The bottom cover is detachably connected to the chassis.

3. The exoskeleton according to claim 2, characterized in that: The bottom plate is provided with a flow channel groove, which is open upwards and communicated with the side wall flow channel. The flow channel groove extends to the center of the bottom plate. 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.

4. The exoskeleton according to claim 3, characterized in that: The bottom cover is provided with the flow channel groove, the outer side wall of the flow channel groove is provided with a buckle, the bottom cover is provided with a buckle groove corresponding to the buckle, and the bottom cover is fixed to the chassis through the buckle and the buckle groove.

5. The exoskeleton according to claim 3, characterized in that: The two opposite sides of the flow channel groove are each provided with a buckle, and the chassis is provided with an avoidance gap penetrating the chassis corresponding to the buckle. After the bottom cover is covered with the chassis, the bottom cover covers the avoidance gap.

6. The exoskeleton according to claim 1, characterized in that: A plurality of the siphon flow channels are arranged at intervals along the circumferential direction of the cartridge frame, the first discharge ports are arranged corresponding to the number of the siphon flow channels, and one of the first discharge ports is communicated with one of the bottom flow channels.

7. The exoskeleton according to claim 6, characterized in that: The bottom cover includes a plurality of covering parts, and one of the covering parts and the bottom plate are combined to form a bottom flow channel.

8. The exoskeleton according to claim 6, characterized in that: 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.

9. The exoskeleton according to claim 6, characterized in that: The first discharge ports are all arranged at the end of the bottom flow channel.

10. The exoskeleton according to claim 6, characterized in that: The outer frame also includes a plurality of siphon parts corresponding to the number of the siphon flow channels, the siphon holes are arranged on the siphon parts, a siphon part and the side frame are enclosed to form a side wall flow channel, the siphon part is slidably connected to the side frame, and the siphon part is clamped and fixed on the side frame.

11. The exoskeleton according to claim 10, characterized in that: 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 toward 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.

12. The exoskeleton according to claim 1, characterized in that: The bottom plate is also provided with a second discharge port, and the second discharge port communicates with the inner side of the cartridge rack and the outside of the cartridge rack.

13. The exoskeleton according to claim 12, characterized in that: There are multiple second discharge ports, one of which is disposed between two adjacent siphon channels, and the second discharge port is closer to the outer side of the bottom plate than the first discharge port.

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

15. The exoskeleton according to claim 1, characterized in that: 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.

16. The exoskeleton according to claim 1, characterized in that: The bottom of the outer frame is provided with a water retaining ring extending in a direction away from the bottom, and the first discharge port is provided in the water retaining ring.

17. A pre-filter, characterized in that: The invention comprises a filter bottle, a filter assembly and an exoskeleton as claimed in 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 a pre-filter as claimed in any one of claims 14 to 17.

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