Water absorption pre-filter and filter system thereof

Abstract

The invention relates to the technical field of water treatment technology, and provides a water absorption prefilter and a filter system thereof, the water absorption prefilter can be arranged on an outdoor filter and connected through a suction pipe, and the prefilter integrating water absorption and filtering functions is provided, so that the whole product is smaller in size and more convenient to use. And the service life of the main machine filter is prolonged, multi-state use of the pre-filter in different water source environments is achieved by arranging the floating piece, and water absorption and pre-filtration of the pre-filter in shallow water or deep water areas according to requirements can be achieved.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, specifically to a pre-filter for water intake and its filter system in the water treatment process. Background Technology

[0002] With the increasing popularity of outdoor sports, hiking, and wilderness exploration, and the growing emphasis on disaster preparedness, the demand for safe drinking water outdoors is rising. Outdoor water sources (such as rivers, lakes, and streams) typically contain large particles of impurities like silt and rust, as well as bacteria, viruses, protozoan cysts (such as Giardia lamblia and Cryptosporidium), and heavy metals and other chemical pollutants. While traditional boiling methods are effective, they are time-consuming and energy-intensive, and cannot remove particles, chemical pollutants, and heavy metals. Therefore, portable outdoor water purifiers have become crucial equipment for solving outdoor drinking water problems.

[0003] Currently, portable outdoor water purifiers come in two forms: manual and electric. One technical approach involves using a straw to draw water from an outdoor water source. The straw has a suction head, and water is drawn to the filter body by a manual air pump or an electric water pump for filtration.

[0004] However, due to technological limitations, the existing technology has many problems, including but not limited to: (1) The filter system is bulky or has many parts, making it inconvenient for outdoor sports or workers to carry; (2) The existing water suction head only has the function of water suction, which results in the filter body having only the first-stage filtration function. The service life of the built-in filter element is greatly shortened, or the filter body needs to be set up or connected to a second-stage filter, making the overall product structure bulky. (3) When the water suction head is used outdoors, it often touches the bottom or sinks to the lower layer of the water source, which makes the water suction head easy to clog or the water to be treated is relatively turbid, reducing the service life of the filter. Summary of the Invention

[0005] The purpose of this invention is to provide a pre-filter that can be configured on an outdoor filter and connected via a suction tube. This pre-filter integrates water absorption and filtration functions, resulting in a smaller overall product size and extended service life of the main filter. By incorporating a floating component, the pre-filter can be used in multiple states in different water source environments, enabling it to absorb water and perform pre-filtration in shallow or deep water areas as needed.

[0006] The objective of this invention is achieved as follows: The present invention provides a water-absorbing pre-filter, including a pre-filter body, which is provided with a water inlet and a water outlet. The water outlet is used to connect to the filter body, and an openable floating member is provided on the upper part of the pre-filter body.

[0007] Preferably, the floating element includes at least two blades, which are hinged to the pre-filter body. The blades have a first state and a second state. In the first state, the blades are spread out away from the pre-filter body and are used to keep the pre-filter body in a floating state. In the second state, the blades are close to and attached to the pre-filter body and are used to keep the pre-filter body in a relatively sinking state. In the first state, the spread angle of the blades relative to the pre-filter body is greater than that in the second state.

[0008] Preferably, the pre-filter body is provided with a detachable counterweight, which is used to adjust the downward movement of the pre-filter body.

[0009] Preferably, in the first state, the range of the blade's unfolding angle relative to the pre-filter body is within the range of 135°-45°.

[0010] Preferably, the blade is provided with a lightweight foam component, the density of which is less than that of water.

[0011] Preferably, in the second state, a notch inlet is formed between at least two adjacent blades.

[0012] Preferably, the blade has notches on both sides, and / or the lower end face of the blade is an arc-shaped surface that slopes downward and outward.

[0013] Preferably, the blade is provided with a positioning structure in a first state and / or a second state, the positioning structure being used to hold the blade in the first state or the second state.

[0014] Preferably, the pre-filter body includes a filter element skeleton, the filter element skeleton is covered with a filter layer on the outside, the filter layer has a water absorption surface on its outer periphery, and a plurality of water intake ports are formed on the water absorption surface.

[0015] Preferably, the filter element frame contains KDF, and the outer side of the filter element frame is sequentially covered with carbon fiber and PP cotton.

[0016] The present invention also provides a filter body having a detachable filter cartridge assembly, the filter cartridge assembly including a built-in filter element assembly, the built-in filter element assembly including a filter element shell and at least one filter element material, the filter element shell having a first inlet, the filter element shell including a filter element top cover, the filter element top cover having a first outlet, and the filter element top cover having a first connecting portion for detachable connection with a conversion component.

[0017] Preferably, the conversion component includes a backwashing connector, and the backwashing connector includes a connector, and the connector includes an axially distributed second inlet and a second outlet. The connector has a second connecting portion that is detachably connected to the first connecting portion at the end where the second outlet is provided, and the second outlet communicates with the first outlet.

[0018] Preferably, the connector has a bladder with a third inlet at the end where the second inlet is located. The bladder is made of an elastomeric material and forms a receiving cavity or the bladder and the inner wall of the connector form a receiving cavity. The receiving cavity forms a third outlet that communicates with the second outlet and is connected to the second inlet.

[0019] Preferably, the connector includes a radially expanding section and a radially contracting section, with the second inlet located in the radially expanding section and the second outlet located in the radially contracting section.

[0020] Preferably, the conversion component includes a water channel conversion component, and the water channel conversion component has a third connecting part at its lower end that is detachably connected to the first connecting part.

[0021] Preferably, the first connecting part is a radially extending pin, and the second connecting part is an L-shaped groove that mates with the first connecting part; Alternatively, the first connecting part is an L-shaped groove, and the second connecting part is a radially extending pin that mates with the first connecting part.

[0022] Preferably, the first connecting part is a radially extending pin, and the third connecting part is an L-shaped groove that mates with the first connecting part; Alternatively, the first connecting part is an L-shaped groove, and the third connecting part is a radially extending pin that mates with the first connecting part.

[0023] The present invention also provides a filter body, wherein the filter body is provided with a detachable filter cartridge assembly, the filter cartridge assembly including at least a built-in filter element assembly, a water circuit conversion component and a water outlet faucet connected to form a whole, the filter body includes a top cover, the top cover is connected to a downwardly extending filter element sleeve, the filter cartridge assembly and the filter element sleeve are detachably connected, and the top cover has an opening for the water outlet faucet to be exposed.

[0024] The present invention also provides a filter body, wherein the filter body is provided with a built-in filter element assembly, a UV sterilization assembly and a water outlet faucet, wherein the water outlet faucet and the built-in filter element assembly have a connecting water passage, wherein a portion or all of the connecting water passage is configured as a sterilization channel, and the sterilization channel is exposed to the light range of the UV sterilization assembly, wherein the UV sterilization assembly is used to sterilize the water passing through the sterilization channel.

[0025] Preferably, the connecting water path includes a water path conversion component, which is connected to the built-in filter assembly and the water outlet faucet respectively, and the water path conversion component is provided with a first channel, the end of which is connected to the sterilization channel.

[0026] Preferably, the water circuit conversion component includes an axially distributed inlet chamber and an outlet chamber, which are separated by a partition. The side walls of both the inlet and outlet chambers are provided with a first channel. The top of the built-in filter assembly is connected to the inlet chamber at the bottom of the water circuit conversion component, the faucet is connected to the outlet chamber at the top of the water circuit conversion component, and the UV sterilization component is disposed on the side of the water circuit conversion component.

[0027] Preferably, the UV sterilization component includes UV lamp beads disposed on the outside and / or inside of the sterilization channel.

[0028] Preferably, the water outlet faucet is mounted on the filter body, the built-in filter element assembly and the UV sterilization assembly are mounted inside the filter body, the built-in filter element assembly, the water path conversion component and the water outlet faucet are connected to form an integral filter cartridge assembly, the filter body includes a top cover, the top cover is connected to a downwardly extending filter element sleeve, the filter cartridge assembly and the filter element sleeve are detachably connected, and the top cover has an opening for the water outlet faucet to be exposed.

[0029] Preferably, the upper part of the filter sleeve is provided with an outlet channel and an inlet channel in a circumferential manner. The two ends of the sterilization channel are respectively connected to the outlet channel and the inlet channel. The water circuit rotating component includes an axially distributed inlet chamber and an outlet chamber. The inlet chamber and the outlet chamber are separated by a partition. The water circuit conversion component is provided with two first channels that communicate with the UV sterilization component. One of the first channels is located on the side wall of the inlet chamber and is used to communicate with the outlet channel, and the other first channel is located on the side wall of the outlet chamber and is used to communicate with the inlet channel. A sealing ring is provided between the inlet channel and the outlet channel to space them apart.

[0030] The present invention also provides a filter body, on which a water outlet is provided, and the water outlet is used to form a through water channel with the built-in filter element assembly disposed in the filter body. The water outlet is provided with a rotating shaft, and the water outlet can rotate relative to the filter body through the rotating shaft. A water outlet pipe is provided on one side of the water outlet. The water outlet includes at least two states. In the first state, the water outlet end of the water outlet pipe does not extend beyond the outer peripheral wall of the filter body. In the second state, the water outlet rotates until the water outlet end of the water outlet pipe extends beyond the outer peripheral wall of the filter body.

[0031] Preferably, the faucet is eccentrically positioned relative to the filter body. In the first state, the water outlet end of the faucet's water outlet pipe is close to the center line of the filter body. In the second state, the faucet is rotated so that the water outlet end of the water outlet pipe is far away from the center line of the filter body.

[0032] Preferably, the water outlet pipe is detachably connected to an extension nozzle.

[0033] The present invention also provides a filter body, the filter body including a cup body, the inner wall of the cup body forming an installation chamber, and a top cover provided above the installation chamber, and a filter element sleeve extending downward connected to the top cover, the filter element sleeve dividing the installation chamber into a left chamber and a right chamber, and a built-in filter element assembly is detachably connected inside the filter element sleeve, and an electronic control assembly is provided on the side of the filter element sleeve in the left chamber.

[0034] Preferably, the left chamber is further provided with a UV sterilization component on the side of the filter element sleeve, and the UV sterilization component is located at the upper end of the electronic control component. The filter element sleeve includes an upper filter element sleeve and a lower filter element sleeve, and the upper filter element sleeve is provided with an outlet channel and an inlet channel in the circumferential direction. There is a lateral channel between the outlet channel and the inlet channel. The UV sterilization component is used to sterilize the water passing through the lateral channel.

[0035] Preferably, the electronic control component includes a main control board, a battery, and a water pump. The main control board is electrically connected to the battery and the water pump, respectively. The water pump is connected to the built-in filter assembly and is used to draw water from an external source.

[0036] Preferably, the electronic control assembly further includes an upper bracket and a lower bracket connected to each other. The upper bracket is equipped with a main control board, and a water pump is provided between the upper bracket and the lower bracket. Several batteries are arranged around the outside of the water pump.

[0037] Preferably, the built-in filter assembly includes a filter housing and at least one filter material, and the filter material includes one or more of carbon-containing origami filter, ultrafiltration membrane and carbon rod.

[0038] Preferably, the filter element housing includes a connecting sleeve and a filter element top cover covering the connecting sleeve, and a filter element bottom cover is connected to the lower end of the first cylinder, and the filter element bottom cover is provided with a first inlet, and the filter element top cover is provided with a first outlet.

[0039] The present invention also provides a filter system, which includes any of the aforementioned pre-filters for water intake and any of the aforementioned filter bodies, wherein the outlet of the pre-filter is connected to the inlet of the filter body via a pipe.

[0040] Preferably, the filter body is an electric filter.

[0041] The outstanding and beneficial technical effects of this invention compared to the prior art are: The pre-filter provided by this invention integrates water absorption and pre-filtration functions by setting a water intake port on the pre-filter body. This allows the pre-filter to have multi-stage filtration when used with the filter body, extending the service life of the built-in filter element in the filter body, reducing the number of accessories, and significantly improving the overall product's miniaturization and portability. While ensuring product functionality, it is more suitable for outdoor water purification applications. Furthermore, by setting a floating component on the pre-filter body, the water pre-filter has multiple usage states. It can float the pre-filter body above the water source when needed, or it can sink relatively. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the structure of a pre-filter for water absorption in one embodiment; Figure 2 This is a cross-sectional view of a pre-filter for water absorption in one embodiment; Figure 3 This is a schematic diagram of the combination of the pre-filter and the filter body in one embodiment; Figure 4 This is a schematic diagram of the overall structure of the filter body; Figure 5 This is an exploded view of the filter body; Figure 6 This is a cross-sectional view of the filter body; Figure 7 This is a structural diagram of the built-in filter assembly and the faucet; Figure 8 yes Figure 7 A sectional view; Figure 9 This is a structural diagram of the top cover, filter sleeve, and UV sterilization component; Figure 10 for Figure 9 A sectional view; Figure 11 This is a schematic diagram of the electronic control component. Figure 12 This is a schematic diagram of the backwash connector and the built-in filter assembly. Figure 13 for Figure 12 Top view; Figure 14 This is a schematic diagram of the backwash connector. Figure 15 This is a schematic diagram of the water circuit structure of the filter cartridge sleeve and UV sterilization component.

[0043] Attached reference numerals: 01 - Filter body; 1 - Cup lid; 2 - Built-in filter element assembly; 3 - Top cover assembly; 4 - Cup body; 5 - Electrical control assembly; 6 - Base; 7 - Inlet silicone plug; 8 - Silicone feet; 14 - Water outlet; 15 - Pressure plate; 16 - Knob; 17 - Sealing ring; 18 - Water tap; 19 - Water outlet pipe; 20 - Rotating shaft; 21 - Water circuit conversion component; 22 - Carbon rod; 23 - Filter element top cover; 25 - ... 26-Ultrafiltration membrane; 27-Filter cartridge housing; 28-Connecting sleeve; 29-Carbonated paper filter cartridge; 30-Filter cartridge lower cover; 31-Main control board; 32-Upper bracket; 33-Battery; 34-Water pump; 35-Lower bracket; 36-Upper cover; 37-Filter cartridge upper sleeve; 38-UV sterilization component; 39-Filter cartridge lower sleeve; 40-Inlet pipe; 41-Outlet chamber; 42-Inlet chamber; 53-Backwash connector; 54-Bag; 02. Pre-filter body; 60. Floating component; 61. Blade; 62. Notch; 70. Filter frame; 71. Filter top cover; 72. Filter bottom cover; 73. Carbon fiber filter layer; 74. PP cotton filter layer; 75. Water outlet. Detailed Implementation

[0044] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] like Figures 1-3 As shown, this invention relates to a pre-filter that can function as both a suction head and a filter. It includes a pre-filter body 02, which comprises a suction port and an outlet 75. The outlet 75 is connected to the filter body 01 via a pipe. An openable / closable floating element 60 is provided on the upper part of the pre-filter body 02. When the floating element 60 is opened or closed, its horizontal projected area changes. When opened, the horizontal projected area of ​​the floating element 60 is significantly larger than when closed. The suction port can be located on the side or bottom of the pre-filter body 02, and the outlet 75 can be located on the top or side of the pre-filter body. The positions of the suction port and outlet 75 can be determined based on the arrangement of the filter materials within the pre-filter body 02.

[0046] The pre-filter body 02 preferably includes a filter element frame 70 and a filter element cover 71. The filter element cover 71 is disposed on the filter element frame 70 and has a water outlet 75. The filter element frame 70 is covered with a filter layer on the outside. The outer side of the filter layer forms a water absorption surface, which is covered with tiny pores. These pores together constitute a water intake port for drawing in raw water.

[0047] In a preferred embodiment, the filter element frame 70 has a receiving cylinder in the middle, which is filled with filter material. The filter material is preferably high-purity copper-zinc alloy particles, preferably KDF40 particles. The filter layer is preferably a multi-layer structure, and the filter layer preferably includes a carbon fiber filter layer 73 and a PP cotton filter layer 74. The outer side of the receiving cylinder is sequentially covered with the carbon fiber filter layer 73 and the PP cotton filter layer 74. Several radial through holes are provided on the side wall of the receiving cylinder, and a water outlet channel communicating with the water outlet 75 of the filter element cover is formed above the receiving cylinder.

[0048] In this embodiment, the pre-filter 02 uses a composite filter element with radial water inlet. The outermost layer is PP cotton, which filters large particles of silt, colloids, animal and plant residues, etc. The middle layer is activated carbon, which can adsorb residual chlorine, organic compounds, and odors. The innermost filter is KDF, which can filter heavy metal ions.

[0049] In a preferred embodiment of the floating element, the floating element 60 is composed of at least two blades 61. The two blades 61 or more blades are arranged circumferentially. Preferably, there are three blades 61. The upper end of the blades 61 is hinged to the hinge part at the top of the filter element frame 70 through a rotating shaft, so that the blades 61 can swing around the hinge point.

[0050] In a preferred embodiment, the hinge portion is provided with a limit block to limit the maximum opening angle of the blade 61.

[0051] Each blade 61 is provided with a lightweight foam component (such as EPE pearl cotton or polyurethane foam) with a density less than that of water, so that the blade itself can provide a certain buoyancy. The specific fixing method of the lightweight foam component is not limited, but it is preferred to be set below the blade or encapsulated inside the blade.

[0052] Blade 61 has two stable states: First state (floating unfolded state, such as...) Figure 1 (As shown): When water needs to be drawn from the upper layer of the water body, the operator rotates the blades upwards to unfold them. The blades unfold to a position where they form an angle of 135°-45° with the axis of the pre-filter body, preferably about 90°. At this angle, the buoyancy provided by the lightweight foaming element inside the blades 61 is sufficient to overcome the weight of the pre-filter body, allowing the entire pre-filter 02 to float near the water surface. At this time, the suction port mainly draws in the raw water from the surface layer of the water body.

[0053] Second state (sinking and retracting state): When water needs to be drawn from the lower layer of the water body, the blades 61 are moved inward, bringing them close to and adhering to the outer wall of the filter element frame 70. At this time, the angle between the blades 61 and the axis of the main body is close to 0°. The retraction of the blades 61 reduces the volume of water displaced, thereby reducing the total buoyancy of the system. Under the action of gravity, the entire pre-filter element will sink relatively to the lower layer of the water body. At this time, the suction port mainly draws in the raw water from the lower layer of the water body. Alternatively, if the water source depth is insufficient, it can be partially tilted into the water at an angle to increase the water contact area for filtration.

[0054] In a preferred embodiment, the blade 61 is provided with a positioning structure in the first and / or second states. This positioning structure is used to hold the blade 61 in the first or second state. The hinge between the blade 61 and the hinge portion at the top of the filter element frame 70 is achieved through the interaction of a rotating shaft and a mounting groove. The positioning structure can be an interference fit between the rotating shaft and the mounting groove, or an elastic ball or friction plate structure distributed along the shaft. Alternatively, a positioning groove can be provided within the rotating shaft or the mounting groove. When the blade 61 rotates to a preset angle in the first state (e.g., 90°) or the second state (e.g., 0°), the positioning structure will lock it or generate significant frictional resistance, thereby stably holding the blade 61 in that state. This prevents accidental angle changes due to water flow impact during use and ensures the reliability of the working state.

[0055] In a preferred embodiment, in the second state, a notch inlet is formed between at least two adjacent blades 61. The notch inlet can be a gap between two blades arranged circumferentially, or a notch 62 can be formed at the two side edges of the blade. When the blade is in the second state (closed and attached to the pre-filter body), the notches 62 of two adjacent blades 61 will correspondingly form a larger notch inlet.

[0056] When the blades 61 close and the pre-filter cartridge sinks, water can flow in at high speed directly from the inlet 62 formed on the side of the blades 61, increasing the inlet flow rate. When the blades unfold and the pre-filter cartridge floats, the inlet 62 formed on the side of the blades 61 effectively guides the water flow smoothly through the sides and bottom of the blades, converting the impact force of the water flow into a downward compressive force and a rotational restoring torque around the center, rather than an overturning torque, thus greatly improving the resistance to water flow and waves. Furthermore, the inlet 62 formed on the side of the blades 61 can disrupt the water flow, forming micro-vortices, which further increases stability and can also disturb and separate some suspended solids in the water in advance.

[0057] In a further preferred embodiment of the blade structure, the outer surface of the blade 61 is a downward and outward inclined arc surface, which can further effectively guide the water flow to pass smoothly from both sides and below the blade 61.

[0058] In one preferred embodiment of the blade 61, the blade 61 has a mesh-like skeleton structure, and a flexible membrane is covered on the skeleton to achieve the maximum load-bearing and stability capacity with the lightest weight.

[0059] In another embodiment, the pre-filter body 02 is further provided with a detachable counterweight. The counterweight is installed at the bottom of the pre-filter body in a known detachable structure. Users can install different weights or numbers of counterweights as needed to adjust the sinking depth of the pre-filter body. By adding or removing counterweights, the specific gravity and center of gravity of the pre-filter can be finely adjusted. For example, in turbid water, the depth can be adjusted to take the clearer water from the upper layer; in water with abundant algae, the depth can be adjusted to avoid surface algae. This greatly improves the product's adaptability to different water qualities and usage scenarios.

[0060] The pre-filter 02 of the present invention is connected to the filter body 01 through a pipeline. The outlet 75 of the pre-filter 02 is connected to the inlet of the filter body 01 through a pipeline. The pre-filter can be used in conjunction with manual pump-type filters and electric filters in various application scenarios.

[0061] The electric filter product adopts a solution of pre-filter, connecting pipe and whole machine. The product is easy to operate, one-button start, water is drawn in through the pre-filter and then water is discharged from the faucet of the whole machine.

[0062] This product is suitable for outdoor sports, hiking, wilderness exploration, and as a reserve for disaster emergencies. Based on these usage scenarios, the product meets the requirements of being extremely small in size, easy to carry and store, having excellent filtration performance (multiple mechanical filtration + UV sterilization to eliminate microorganisms), being simple and easy to operate, suitable for harsh outdoor environments, having long battery life, and being detachable, washable, and reusable.

[0063] One embodiment of the filter body structure, such as Figures 4-11 As shown, the water path structure of the filter includes a water outlet structure, specifically comprising a built-in filter element assembly 2, a UV sterilization assembly 37, and a water outlet faucet 18. The water outlet faucet 18 and the built-in filter element assembly 2 have a connecting water path. Part or all of the connecting water path is configured as a sterilization channel, and the sterilization channel is exposed to the light range of the UV sterilization assembly 37. The UV sterilization assembly 37 is used to sterilize the water passing through the sterilization channel.

[0064] Therefore, in actual use, by placing the UV sterilization component 37 between the built-in filter element 2 and the faucet 18, the UV sterilization component sterilizes the water about to flow out, ensuring that the water flowing out, or the water to be drunk or used, is sterilized and clean. Furthermore, compared to sterilizing unfiltered water, sterilizing filtered water yields a better sterilization effect. Moreover, the UV sterilization component 37 sterilizes water passing through the sterilization channel, thus sterilizing flowing water rather than using a separate sterilization device. This contributes to the miniaturization of the overall filter size, making it easier to carry.

[0065] Meanwhile, the UV sterilization component 37 includes a water pipe, which is also the sterilization channel and a section of the water circuit. The UV sterilization component 37 also includes UV lamp beads disposed on the outside and / or inside of the sterilization channel. When the UV lamp beads are located outside the sterilization channel, the sterilization channel is transparent and allows light to pass through.

[0066] like Figures 5-11 As shown, the water path includes a water path conversion component 21, which is connected to the built-in filter assembly 2 and the water outlet faucet 18 respectively. The water path conversion component 21 is provided with a first channel, and the end of the sterilization channel is connected to the first channel.

[0067] In a preferred embodiment, the water circuit conversion component 21 includes an axially distributed inlet chamber 44 and an outlet chamber 45, which are separated by a partition, and both the inlet chamber 44 and the outlet chamber 45 have a first channel on their side walls.

[0068] Therefore, during installation, the top of the built-in filter assembly 2 is connected to the inlet chamber 44 at the bottom of the water circuit conversion component 21, and the water outlet faucet 18 is connected to the outlet chamber 45 at the top of the water circuit conversion component 21. The UV sterilization component 37 is located on the side of the water circuit conversion component 21. Moreover, since it is set on the side, that is, the sterilization channel is also located on the side, the sterilization channel can also be called the side channel.

[0069] Secondly, the built-in filter cartridge assembly 2, water circuit conversion component 21 and water outlet faucet 18 are connected to form an integrated filter cartridge assembly, so the filter cartridge assembly can be used as an independent component and can be detached from the filter body.

[0070] Specifically, the filter body includes an upper cover 35, and the upper cover 35 is connected to a downwardly extending filter element sleeve. The filter element assembly and the filter element sleeve are detachably connected, and the upper cover 35 has an opening for the water faucet 18 to be exposed.

[0071] Therefore, in actual use, the detachable connection facilitates replacement and maintenance.

[0072] Meanwhile, the upper part of the filter sleeve is provided with an outlet channel and an inlet channel in the circumferential direction, and the two ends of the sterilization channel are respectively connected to the outlet channel and the inlet channel. Moreover, the water circuit conversion component 21 is provided with two first channels connected to the UV sterilization component 37. One of the first channels is located on the side wall of the inlet chamber 44 and is used to connect with the outlet channel, and the other first channel is located on the side wall of the outlet chamber 45 and is used to connect with the inlet channel. Furthermore, sealing rings 17 are provided between the inlet channel and the outlet channel, which are spaced apart from each other, thereby achieving a seal and ensuring that the inlet channel and the outlet channel do not interfere with each other.

[0073] Furthermore, the UV sterilization component 37 is located on the side of the water circuit conversion component 21 and also on the side of the filter cartridge sleeve. Through the cooperation between the filter cartridge sleeve and the water circuit conversion component 21, sterilization is achieved without hindering the disassembly of the filter cartridge assembly, thus facilitating cleaning and replacement.

[0074] As a preferred embodiment, the installation structure of the UV sterilization component 37 is as follows: firstly, a first mounting base extends laterally from the filter sleeve, and the UV sterilization component 37 is installed on the first mounting base, and the installation here is achieved by screw connection.

[0075] One embodiment of the filter body has a water outlet structure, such as Figures 1-7 As shown, the filter includes a filter body and a water outlet 18 disposed on the filter body. The water outlet 18 is used to form a through water passage with the built-in filter element assembly 2 disposed in the filter body. The water outlet 18 is provided with a rotating shaft 20, and the water outlet 18 can rotate relative to the filter body through the rotating shaft 20. A water outlet pipe 19 is provided on one side of the water outlet 18.

[0076] Therefore, in actual use, the water tap 18 has at least two states. In the first state, the water outlet end of the water outlet pipe 19 of the water tap 18 is located inside the outer peripheral wall of the filter body. In the second state, the water tap 18 is rotated until the water outlet end of the water outlet pipe 19 extends beyond the outer peripheral wall of the filter body.

[0077] Therefore, due to the rotatable design of the water outlet 18, the water outlet 18 can be rotated until the water outlet end of the water outlet pipe 19 extends beyond the outer peripheral wall of the filter body. Thus, water can be dispensed directly after rotation, and if there is residual water in the water outlet pipe, it will not go onto the filter. The residual water can be cleaned before rotating it back. Of course, in addition to dispensing water directly, a flexible hose or a detachable extension nozzle can also be connected after rotation.

[0078] The faucet 18 has a rotation angle of 0-360°, with the water outlet pointing towards the axis at 0°, allowing it to rotate 360°. In another preferred embodiment, the faucet 18 has a rotation angle within the range of 0-180°, limiting the rotation to more than 180°. This allows the faucet 18 to remain in a limited position when the water is opened to its maximum angle. For example, when a clockwise counterforce is applied, the faucet 18 will not move. Furthermore, preferably, the faucet 18 has a limit retaining structure at both the 0° and 180° positions. This limit retaining structure can be a limit block or a limit elastic block.

[0079] In a preferred embodiment, the faucet 18 is eccentrically positioned relative to the filter body. In a first state, the water outlet end of the water outlet pipe 19 of the faucet 18 is close to the center line of the filter body, and in a second state, the faucet 18 is rotated so that the water outlet end of the water outlet pipe 19 is far away from the center line of the filter body.

[0080] Therefore, in actual use, the eccentric setting of the water tap 18 makes it easier for the water tap 18 to be stored inside the cup lid 1, and the length of the water tap 18 can be set to a wider range.

[0081] like Figures 6-8 As shown, the structure of the water tap 18 is as follows: First, it also includes a water circuit conversion component 21 disposed in the filter body, and the water tap 18 is rotatably disposed on the water circuit conversion component 21. The water circuit conversion component 21 is used to communicate with the built-in filter element assembly 2 and the water tap 18 respectively. The water tap 18 includes a water outlet component 14, and a water outlet pipe 19 is provided on one side of the water outlet component 14. The rotating shaft 20 is disposed at the bottom of the water outlet component 14, and the water circuit conversion component 21 has a second channel corresponding to the rotating shaft 20 for the rotating shaft 20 to be placed and rotated.

[0082] In a preferred embodiment of the installation structure between the faucet 18 and the water circuit conversion component 21, the faucet 18 further includes a pressure plate 15 and a knob 16. The pressure plate 15 presses and installs the water outlet component 14 and the knob 16 onto the water circuit conversion component 21, and a mounting groove is formed between the knob 16 and the water circuit conversion component 21. The pressing process utilizes high temperature and high pressure conditions to cause physicochemical changes in the materials during hot pressing, ultimately forming a firmly bonded integral structure. Therefore, the connection between the water outlet component 14 and the knob 16 can be achieved through the pressure plate 15.

[0083] Furthermore, the filter body includes an upper cover 35, and the upper cover 35 has an opening for the water supply conversion component 21 to be exposed, and the upper cover 35 has a protruding ring on the outside of the opening, and the protruding ring is located in the mounting groove.

[0084] like Figures 4-14As shown, the detachable filter cartridge assembly focuses on detachability and is specifically designed for the detachable internal filter element assembly 2. The specific structure includes an internal filter element assembly 2, which comprises a filter element housing 26 and at least one filter element material. The filter element housing 26 is provided with a first inlet and includes a filter element cover 23, which is provided with a first outlet and a first connecting portion for detachable connection with the conversion component.

[0085] Therefore, in actual use, the conversion component is set in the filter body and connected to the built-in filter element assembly 2. The conversion component and the built-in filter element assembly 2 are detachably connected. Specifically, the conversion component and the filter element cover 23 are detachably connected, so that the built-in filter element assembly 2 is detachable relative to the filter body, which facilitates replacement and cleaning.

[0086] The conversion component can be varied, including either a backwash connector 50 or a water circuit conversion component 21. When it is a backwash connector 50, the conversion component includes a backwash connector 50, and the backwash connector 50 includes a connector, which includes an axially distributed second inlet and a second outlet. Moreover, at the end of the connector where the second outlet is provided, there is a second connecting part that is detachably connected to the first connecting part, and the second outlet communicates with the first outlet.

[0087] Therefore, in actual use, the backwash connector 50 allows for backwashing of the built-in filter element assembly 2, eliminating the need for frequent replacements and protection of the filter material. This is because with prolonged use, the inside of the built-in filter element assembly 2 becomes dirty, necessitating replacement, which increases operating costs and leads to a poor user experience. While some methods involve hand-washing instead of replacement—disassembling the built-in filter element assembly 2 and cleaning the filter material separately—some filter materials are fragile, and hand-washing can damage them, affecting filtration efficiency. Furthermore, disassembly and reassembly are not convenient. The backwash connector 50 avoids these problems.

[0088] Meanwhile, at the end of the connector where the second inlet is located, there is a bladder 51 with a third inlet. The bladder 51 is made of an elastic material and forms a receiving cavity or the bladder 51 and the inner wall of the connector form a receiving cavity. The receiving cavity forms a third outlet that communicates with the second outlet and is connected to the second inlet.

[0089] Therefore, in actual use, water is poured into the receiving cavity, and the water in the receiving cavity enters the connector through the third outlet and then enters the built-in filter element 2, thereby achieving reverse flushing. At the same time, due to the elastic material of the bag 51, the third outlet of the bag 51 forms a relatively sealed structure when it is connected with other compatible containers or kettles for flushing, thus preventing leakage and achieving pressurized flushing.

[0090] like Figures 12-14 As shown, the connector structure is as follows: First, the connector includes a radially expanding section and a radially contracting section, with the second inlet located in the radially expanding section and the second outlet located in the radially contracting section.

[0091] Meanwhile, the detachable connection structure is as follows: firstly, the first connecting part is a radially extending pin, and the second connecting part is an L-shaped groove that mates with the first connecting part; or, the first connecting part is an L-shaped groove, and the second connecting part is a radially extending pin that mates with the first connecting part.

[0092] Therefore, in actual use, the L-shaped slot and the pin are matched to achieve a detachable connection.

[0093] like Figures 4-10 As shown, when the conversion component is a water channel conversion component 21, that is, the conversion component includes the water channel conversion component 21, and the water channel conversion component 21 is provided with a third connecting part at the lower end that can be detachably connected to the first connecting part.

[0094] Meanwhile, the detachable connection structure is as follows: firstly, the first connecting part is a radially extending pin, and the third connecting part is an L-shaped groove that mates with the first connecting part; or, the first connecting part is an L-shaped groove, and the third connecting part is a radially extending pin that mates with the first connecting part.

[0095] Therefore, in actual use, the L-shaped slot and the pin are matched to achieve a detachable connection.

[0096] like Figures 4-12 As shown, the structure of the filter body is as follows: it includes a filter body, and the filter body includes a cup body 4. The inner wall of the cup body 4 encloses and forms an installation chamber. A top cover 35 is provided above the installation chamber. The top cover 35 is connected to a downwardly extending filter element sleeve. The filter element sleeve divides the installation chamber into a left chamber and a right chamber. A built-in filter element assembly 2 is detachably connected inside the filter element sleeve. An electronic control assembly 5 is provided on the side of the filter element sleeve in the left chamber.

[0097] Therefore, in actual use, the filter sleeve design divides the installation chamber into a left and right chamber. The built-in filter element assembly 2 is placed inside the filter sleeve, while the electrical control assembly 5 is placed outside the filter sleeve. This separates the water circuit from the electrical circuit, reducing the impact of the water circuit on the internal electrical components. The left-right layout also reduces the overall height, making it easier to carry and use. Furthermore, the built-in filter element assembly 2 is detachably connected inside the filter sleeve, allowing it to be centrally integrated within the sleeve for easy removal and replacement.

[0098] Meanwhile, a UV sterilization component 37 is also provided on the side of the filter element sleeve in the left chamber, and the UV sterilization component 37 is located at the upper end of the electronic control component 5. The filter element sleeve includes an upper filter element sleeve 36 and a lower filter element sleeve 38. The upper filter element sleeve 36 is provided with an outlet channel and an inlet channel in the circumference, and there is a lateral channel between the outlet channel and the inlet channel. The UV sterilization component 37 is used to sterilize the water passing through the lateral channel.

[0099] Secondly, the outlet of the built-in filter assembly 2 is connected to a water path conversion component 21, and the water path conversion component 21 includes an axially distributed inlet chamber 44 and an outlet chamber 45. The water path conversion component 21 is provided with two first channels that communicate with the UV sterilization assembly 37. One of the first channels is located on the side wall of the inlet chamber 44 and is used to communicate with the outlet channel, and the other first channel is located on the side wall of the outlet chamber 45 and is used to communicate with the inlet channel. A sealing ring 17 is provided between the inlet channel and the outlet channel and spaced apart from each other.

[0100] like Figures 4-15 As shown above, the specific structure of the filter includes a cup lid 1 and a filter body, and the filter body is provided with a water outlet faucet 18. The filter body also includes an upper cover assembly 3, a cup body 4 and a base 6. The cup body 4 is provided with a built-in filter element assembly 2, a UV sterilization assembly 37, a water circuit conversion component 21 and an electrical control component 5. The base 6 is provided with a water inlet, which is fitted with a water inlet silicone plug 7. Preferably, the bottom surface of the base is provided with a silicone foot pad 8.

[0101] The silicone plug 7 at the water inlet serves to prevent dust and water damage. It is opened when in use. The silicone feet 8 are located at the bottom of the machine, which increases friction.

[0102] The structure of the faucet 18 includes a water outlet component 14, with a water outlet pipe 19 on one side of the water outlet component 14, and a rotating shaft 20 at the bottom of the water outlet component 14. The bottom of the water outlet component 14 is connected to a knob 16 via a pressure plate 15. Both the rotating shaft 20 and the knob 16 have protruding edges corresponding to the pressure plate 15, and the bottom of the pressure plate 15 abuts against the protruding edges.

[0103] The water circuit conversion component 21 has a structure including an axially distributed inlet chamber 44 and an outlet chamber 45, which are separated by a partition, and both the inlet chamber 44 and the outlet chamber 45 have a first channel on their side walls.

[0104] The built-in filter assembly 2 has a structure including a filter housing 26 and at least one filter material, and the filter material includes one or more of the following: a carbon-containing origami filter 28, an ultrafiltration membrane 25, and a carbon rod 22. When all three are present, the arrangement from bottom to top is: carbon-containing origami filter 28, ultrafiltration membrane 25, and carbon rod 22, i.e., triple filtration.

[0105] The ultrafiltration membrane 25 is 0.01μm, and the carbon-containing paper filter element 28 and ultrafiltration membrane 25 filter out most of the tiny particles and heavy metals, while the carbon rod 22 improves the taste. Therefore, while ensuring a small size and weight, multiple filtration can achieve efficient purification of various complex outdoor water sources, and ensure that the UV sterilization component 37 receives relatively pure pre-treated water to guarantee a stable sterilization rate.

[0106] Meanwhile, the filter element housing 26 includes a connecting sleeve 27 and a filter element upper cover 23 covering the connecting sleeve 27, and the lower end of the first cylinder is connected to the filter element lower cover 26, and the filter element lower cover 26 is provided with a first inlet, and the filter element upper cover 23 is provided with a first outlet.

[0107] The faucet 18, the water path conversion component 21, and the built-in filter element assembly 2 together form a filter cartridge assembly that is detachable from the filter body.

[0108] The structure between the faucet 18 and the water circuit conversion component 21 is as follows: First, the water circuit conversion component 21 has a second channel for the rotation shaft 20 to be placed and rotated, and the water outlet 14 is connected to the water outlet chamber 45. Furthermore, the knob 16 and the water circuit conversion component 21 form an installation groove for the convex ring of the upper cover 35 to be placed.

[0109] The connection structure between the built-in filter element assembly 2 and other components is as follows: First, the built-in filter element assembly 2 is connected to the water inlet chamber 44, that is, the first outlet is connected to the water inlet chamber 44 of the water circuit conversion component 21, and the first inlet is connected to the water inlet pipe 39 of the upper cover assembly 3. Moreover, the filter element lower cover 26 and the water circuit conversion component 21 are detachably connected, and an L-shaped groove and pin are used.

[0110] The structure of the upper cover assembly 3 includes an upper cover 35 and a filter element sleeve extending downward connected to the bottom of the upper cover 35. The top of the upper cover 35 is provided with a protruding ring, which is adapted to the knob 16 and the water circuit conversion component 21. The filter element sleeve has a detachable built-in filter element assembly 2. The filter element sleeve includes an upper filter element sleeve 36 and a lower filter element sleeve 38. The bottom of the lower filter element sleeve 38 is provided with a water inlet pipe 39.

[0111] Meanwhile, the upper sleeve 36 of the filter element is provided with an outlet channel and an inlet channel for the first channel of the water circuit conversion component 21, and the outlet channel and the inlet channel are connected to the UV sterilization component 37.

[0112] The structure of the UV sterilization component 37 includes a water pipe, and UV lamp beads are arranged on the outside and / or inside of the water pipe. When the UV lamp beads are located outside the sterilization channel, the sterilization channel is transparent and allows light to pass through.

[0113] Furthermore, the UV sterilization component 37 is located on one side of the water circuit conversion component 21 and is connected to the first channel, and both ends of the water pipe are connected to the inlet chamber 44 and the outlet chamber 45, respectively.

[0114] The structure of the electronic control component 5 includes a main control board 30, a battery 32 and a water pump 33. The main control board 30 is electrically connected to the battery 32 and the water pump 33 respectively. The water pump 33 is connected to the built-in filter assembly 2 and is used to draw water from the external source.

[0115] Meanwhile, the electronic control component 5 also includes an upper bracket 31 and a lower bracket 34 that are connected to each other. The upper bracket 31 is provided with a main control board 30, and a water pump 33 is provided between the upper bracket 31 and the lower bracket 34. Several batteries 32 are provided around the outside of the water pump 33.

[0116] Furthermore, the cup body 4 is equipped with a button and a Type-C interface, and the main control board 30 is electrically connected to the button and the Type-C interface respectively. Pressing the button can start the water pump 33 to work and charge the battery 32 through the Type-C.

[0117] Therefore, the working principle is as follows: First, the user presses the button to start the water pump 33. After the water pump 33 starts working, it draws external water and transports it to the inlet pipe 39 of the lower sleeve 38 of the filter element. At this time, the water enters the filter element sleeve through the inlet pipe 39 of the lower sleeve 38, and then enters the built-in filter element assembly 2 from the bottom. The water entering the built-in filter element assembly 2 will pass through the carbon paper filter element 28, the ultrafiltration membrane 25, and the carbon rod 22 for triple filtration. The filtered water is located in the inlet chamber 45. Then, the water in the inlet chamber 45 flows to the UV sterilization component 37 and flows into the water pipe of the UV sterilization component 37 for sterilization. The sterilized water flows to the water circuit conversion component 21 and enters the outlet chamber 44, and then flows to the outlet pipe 19 of the faucet to dispense water.

[0118] Moreover, many components that the water passes through during the entire flow process are equipped with sealing rings 17 at their joints, thus forming a complete and sealed waterway.

[0119] Secondly, the complete structure of this invention enables multiple filtrations and uses UV sterilization to ensure the cleanliness of the water. At the same time, UV sterilization sterilizes the flowing water. The components inside the cup body 1 are arranged on the left and right sides and the water and electrical circuits are separated. Therefore, the overall volume is reduced through reasonable layout, and the portability and safety of the product are guaranteed.

[0120] Meanwhile, the rotating structure of the water tap 18 allows for direct water flow by turning it before each use, preventing residual water droplets from falling onto the filter body. Furthermore, the conversion component and the built-in filter element assembly are detachable, and the conversion component is located within the filter body, making the built-in filter element assembly 2 removable relative to the filter body. This facilitates replacement and cleaning. When the conversion component is a backwash connector 50, backwashing can also be achieved, eliminating the need for frequent replacements and protecting the filter material.

[0121] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. However, the present invention is not limited to the above embodiments; therefore, various changes and modifications can be made without departing from the principles and scope of the present invention, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A prefilter for water absorption, characterized by, The pre-filter body (02) is provided with a water suction port and a water outlet (75) for connecting the filter body (01), and the upper portion of the pre-filter body (02) is provided with an openable floating member (60).

2. A prefilter according to claim 1, wherein: The floating member (60) comprises at least two blades (61) hingedly connected to the pre-filter body (02), and each blade (61) comprises a first state and a second state. In the first state, the blade (61) is unfolded away from the pre-filter body (02) and used to keep the pre-filter body (02) in a floating state. In the second state, the blade (61) is close to the pre-filter body (02) and used to keep the pre-filter body (02) in a relatively sinking state. The unfolding angle of the blade (61) relative to the pre-filter body (02) in the first state is greater than that in the second state.

3. A prefilter according to claim 2, wherein: The pre-filter body (02) comprises a filter core framework (70) covered with a filter layer on the outside, and the outer periphery of the filter layer comprises a water suction surface, and a plurality of water suction ports are formed on the water suction surface.

4. A prefilter according to claim 3, wherein: In the second state, a gap is formed between at least two adjacent blades (61) to form a water inlet.

5. A prefilter according to claim 4, wherein: The blade (61) is provided with a gap (62) on both sides, and / or the lower end surface of the blade (61) is an arc surface inclined downward and outward.

6. A prefilter according to claim 1 or 2, wherein: The pre-filter body (02) is provided with a detachable counterweight for adjusting the sinking amplitude of the pre-filter body (02).

7. A filter system characterized by, The pre-filter body (02) and the filter body (01) are connected by a pipeline.

8. The filter system of claim 7, wherein: The filter body (01) is provided with a detachable filter cartridge assembly comprising an internal filter core assembly (2) comprising a filter core shell (26) and at least one filter core material, and the filter core shell (26) is provided with a first inlet, the filter core shell (26) comprises a filter core upper cover (23), the filter core upper cover (23) is provided with a first outlet, and the filter core upper cover (23) is provided with a first connecting part for detachable connection with the conversion part.

9. The filter system of claim 8, wherein: The conversion part comprises a backwashing joint (50) comprising a connecting head comprising an axially distributed second inlet and a second outlet, the connecting head is provided with a second connecting part at the end provided with the second outlet for detachable connection with the first connecting part, the second outlet is in communication with the first outlet, the connecting head is provided with a bag (51) with a third inlet at the end provided with the second inlet, the bag (51) is composed of an elastomer material, and the bag (51) forms a containing cavity or the bag (51) forms a containing cavity with the inner wall of the connecting head, the containing cavity forms a third outlet through the second outlet, and the third outlet is in communication with the second inlet.

10. The filter system of claim 8, wherein: The conversion component includes a waterway conversion component (21), and the waterway conversion component (21) is provided with a third connecting part at a lower end, which is detachably connected with the first connecting part.

11. The filter system of claim 7, wherein: The filter body (01) is provided with a detachable filter cartridge assembly, which at least includes an internal filter element assembly (2), a waterway conversion component (21) and a water outlet faucet (18) connected to form a whole, the filter body includes an upper cover (35), the upper cover (35) is connected with a downward extending filter element sleeve, the filter cartridge assembly and the filter element sleeve are detachably connected, and the upper cover (35) is provided with an opening for exposing the water outlet faucet (18).

12. The filter system of claim 7, wherein: The filter body (01) is provided with an internal filter element assembly (2), a UV sterilization assembly (37) and a water outlet faucet (18), the water outlet faucet (18) and the internal filter element assembly (2) have a communication waterway, part or all of the communication waterway is provided as a sterilization channel, and the sterilization channel is exposed in the light range of the UV sterilization assembly (37), and the UV sterilization assembly (37) is used for sterilizing the water passing through the sterilization channel.

13. The filter system of claim 12, wherein: The communication waterway includes a waterway conversion component (21), which is communicated with the internal filter element assembly (2) and the water outlet faucet (18) respectively, the waterway conversion component (21) includes an axial distribution of water inlet chamber (44) and water outlet chamber (45), the water inlet chamber (44) and the water outlet chamber (45) are separated by a partition, and the side wall of the water inlet chamber (44) and the water outlet chamber (45) is provided with a first channel, the top of the internal filter element assembly (2) is connected with the water inlet chamber (44) of the bottom of the waterway conversion component (21), the water outlet faucet (18) is connected with the water outlet chamber (45) of the top of the waterway conversion component (21), and the UV sterilization assembly (37) is arranged laterally to the waterway conversion component (21).

14. The filter system of claim 7, wherein: The filter body is provided with a water outlet faucet (18), and the water outlet faucet (18) is used to form a through waterway with an internal filter element assembly (2) arranged in the filter body, the water outlet faucet (18) is provided with a rotating shaft (20), and the water outlet faucet (18) is rotatable relative to the filter body through the rotating shaft (20), and one side of the water outlet faucet (18) is provided with a water outlet pipe (19), the water outlet faucet (18) at least includes two states, in the first state, the water outlet end of the water outlet pipe (19) of the water outlet faucet (18) does not exceed the peripheral wall of the filter body, and in the second state, the water outlet faucet (18) is rotated to the water outlet end of the water outlet pipe (19) beyond the peripheral wall of the filter body.

15. The filter system of claim 14, wherein: The water outlet faucet (18) is arranged eccentrically relative to the filter body, in the first state, the water outlet end of the water outlet pipe (19) of the water outlet faucet (18) is close to the center line of the filter body, and in the second state, the water outlet faucet (18) is rotated to the water outlet end of the water outlet pipe (19) away from the center line of the filter body.

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