A front filter with a thread-free quick release

Abstract

The utility model relates to a thread-free quick-release type front filter, which solves the technical problem that the filter bottle cannot be quickly separated from the fixed valve head. The utility model comprises a filter bottle with an open upper end and a filter core assembly inside, a fixed valve head with a water inlet and outlet assembly on one side arranged at the open end of the filter bottle, a quick-release wrench in a semi-enclosed structure movably arranged on the outer side of the filter bottle in a circumferential direction, a wrench part on the outer side of the filter bottle at the lower end of the quick-release wrench, and a quick-release positioning structure arranged at the open end of the filter bottle and the quick-release wrench. The utility model has the advantages that the semi-enclosed quick-release wrench and the arc-shaped movable slot positioning structure are used, the positioning or separation of the filter bottle and the fixed valve head can be completed by only circumferentially swinging the wrench, no tools are needed throughout the process, the pain point that the traditional threaded product is difficult to install and disassemble after long-term use due to thread jamming is solved, and the operation threshold of the user is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of filter equipment technology, specifically relating to a threadless quick-release pre-filter. Background Technology

[0002] Pre-filters, as household water pretreatment devices, are widely used to filter impurities in water. Traditional pre-filters typically use threaded connections to fix the filter bottle and valve head. This connection method requires tools for installation and disassembly, making the operation cumbersome. Furthermore, after long-term use, threaded connections are prone to rusting and jamming, making it difficult to disassemble the filter bottle. Therefore, some existing pre-filters use hook connections, but this does not allow for quick separation of the filter bottle from the fixed valve head, and tools are still required for disassembly and cleaning of the filter element.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses a pre-filter [202322648076.2], including a valve head, a filter bottle, and a valve core assembly. The valve head has a first flow channel and a second flow channel, the filter bottle is connected to the second flow channel, and the filter bottle is detachably connected to the valve head. The valve core assembly includes a first cylinder and a second cylinder sleeved on the outer wall of the first cylinder. The second cylinder is mounted on the valve head. The first cylinder has a through hole, and the second cylinder has a guide hole. The chamber of the first cylinder is connected to the first flow channel. The first cylinder rotates within the second cylinder to change the on / off state between the through hole and the guide hole, so that the first flow channel is connected to the filter bottle, or the first flow channel is connected to the second flow channel, or the first flow channel is blocked.

[0004] The above solution has solved to some extent the problems of the existing threaded connection, which is cumbersome to operate and prone to rusting and jamming after long-term use. However, the solution still has many shortcomings, such as the inability to quickly separate the filter bottle from the fixed valve head. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a threadless, quick-release pre-filter.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a threadless quick-release pre-filter, comprising a filter bottle with an open top and a filter element assembly inside, wherein the open end of the filter bottle is provided with a fixed valve head having an inlet / outlet water assembly on one side, and a quick-release wrench with a semi-enclosed structure is movably provided on the outer side of the filter bottle, wherein the upper end of the quick-release wrench is rotatably connected to the fixed valve head, and the lower end of the quick-release wrench has a wrench portion located on the outside of the filter bottle, and the open end of the quick-release wrench and the filter bottle are provided with a quick-release positioning structure that can position the filter bottle and the fixed valve head relative to each other when the quick-release wrench swings circumferentially relative to the filter bottle. By adopting a threadless design, the traditional method of multiple rotations for tightening filters is eliminated, greatly simplifying the installation and disassembly process, avoiding the risks of stripped threads, insufficient tightening, or over-tightening making disassembly difficult, and completing the installation and disassembly simply by swinging the quick-release wrench, making operation extremely simple and quick. Users do not need professional tools and can operate it by hand, improving the user experience.

[0007] In the aforementioned threadless quick-release pre-filter, the filter bottle is cylindrical, and the lower end of the fixed valve head has a sealing seat that matches the open end of the filter bottle. A sealing ring is located circumferentially inwards from the outer side of the sealing seat and circumferentially inwards from the open end of the filter bottle. The sealing seat at the lower end of the fixed valve head matches the open end of the cylindrical filter bottle, ensuring a tight fit. Simultaneously, the sealing ring is located circumferentially inwards from the sealing seat and inwards from the filter bottle port. This design creates an effective compression seal, providing better leak prevention and effectively withstanding pipeline water pressure.

[0008] In the aforementioned threadless quick-release pre-filter, the quick-release wrench has an inner frame layer and an outer frame layer located outside the inner frame layer, and the inner and outer frame layers are matched in shape and size. This double-layer structure design provides higher mechanical strength and resistance to deformation, ensuring that it will not be damaged even with long-term, frequent use. Both the inner and outer frame layers are made of engineering plastics.

[0009] In the aforementioned threadless quick-release pre-filter, the quick-release wrench includes an arc-shaped semi-enclosed portion circumferentially surrounding the open end of the filter bottle. The upper ends of both sides of the arc-shaped semi-enclosed portion have connecting portions extending upwards to both sides of a fixed valve head. These connecting portions are rotatably connected to the fixed valve head via a rotating structure. The lower ends of both sides of the arc-shaped semi-enclosed portion are respectively provided with inclined portions extending to one side of the lower end of the filter bottle, located below the arc-shaped semi-enclosed portion. The wrench part is connected between the lower ends of the two inclined portions. The downward-sloping wrench part and the arc-shaped design at the end facilitate a natural grip and application of force by the user, making operation effortless and comfortable.

[0010] In the aforementioned threadless quick-release pre-filter, the wrench is arc-shaped, and a gap is formed between the wrench and the lower circumferential outer edge of the filter bottle. The arc-shaped semi-enclosed part, connecting part, inclined part, and wrench are integrated into a single structure. The gap between the wrench and the lower edge of the filter bottle ensures sufficient space for fingers to insert, facilitating operation. Simultaneously, the integrated structure signifies higher overall strength and stability, more direct and effective force transmission, and prevents failure due to loose components.

[0011] In the aforementioned threadless quick-release pre-filter, the rotating structure includes rotating holes on both sides of the fixed valve head. A metal reinforcing plate is provided between the inner and outer frame layers. The upper end of the metal reinforcing plate is rotatably connected to the rotating hole via a rotating shaft passing through the inner frame layer. Adding a metal reinforcing plate inside the plastic part greatly enhances the strength and wear resistance of key stress-bearing components, avoiding the problems of easy wear and breakage of pure plastic rotating shafts, thus extending product life. Simultaneously, the cooperation between the rotating shaft and the rotating hole enables smooth and stable swinging of the quick-release wrench.

[0012] In the aforementioned threadless quick-release pre-filter, the quick-release positioning structure includes an arc-shaped movable part located at the lower end of the metal reinforcing plate and inside both sides of the arc-shaped semi-enclosed part. The arc-shaped movable part has an arc-shaped movable groove extending to one end. The arc-shaped semi-enclosed part has sliding grooves on both sides that match the arc-shaped movable grooves. The upper end of the filter bottle has sliding groove columns on both sides that can slide into the arc-shaped movable grooves. This structure converts the circular swing of the wrench into an upward pulling force and locking force on the filter bottle through the cooperation of the arc-shaped movable grooves and sliding groove columns. Simultaneously, the process of turning the wrench is the locking or releasing process, resulting in high mechanical efficiency. This mechanical structure can generate a very large locking force, ensuring that the filter bottle and valve head will not detach under high pressure, thus ensuring high safety. Furthermore, when the wrench swings to a specific position, such as when the sliding groove column slides to the end of the movable groove, the user can feel the feedback that it is properly engaged, clearly knowing whether it is locked.

[0013] In the aforementioned threadless quick-release pre-filter, the fixed valve head has an upper cover at its upper end, and an LED display screen is installed inside the upper cover. A PC control board is connected to the lower side of the LED display screen. The LED display screen can intuitively display information such as water flow rate, filtration volume, and filter cartridge life, allowing users to understand water quality and equipment status in real time. At the same time, the PC control board is used to uniformly process sensor data and control the display, realizing the product's intelligence.

[0014] In the aforementioned threadless quick-release pre-filter, the inlet and outlet water assembly includes a universal valve head connected to a fixed valve head. One end of the universal valve head has an inlet, and the other end has an outlet. The universal valve head contains a flow sensor connected to a PC control board. A product mounting bracket is located on the side of the universal valve head away from the fixed valve head, and a wall mounting bracket is connected to the outside of the product mounting bracket. The flow sensor can accurately monitor the water usage of the filter element in real time and transmit this data to the PC control board. The product mounting bracket and wall mounting bracket make installation more flexible; the bracket can be fixed to the wall first, and then the filter body can be hung, making the installation process clearer and more stable.

[0015] In the aforementioned threadless quick-release pre-filter, the filter element assembly has a PP cotton layer and an activated carbon layer. The filter bottle has a fixed base at its lower end, and the fixed base has a drain port connected to the filter bottle on its inner circumferential side. The filter element assembly uses a 0.01-micron filter element, achieving water purification without affecting water flow. The lower-positioned drain port design allows users to easily and periodically open the valve to flush the filter bottle, removing trapped impurities, extending the filter element's lifespan, and reducing maintenance costs.

[0016] Compared with existing technologies, the advantages of this utility model are: 1. This device uses a semi-enclosed quick-release wrench and an arc-shaped movable groove positioning structure, which only requires a circumferential swing wrench to position or separate the filter bottle from the fixed valve head. No tools are required throughout the process, which solves the pain points of traditional threaded products, such as laborious installation and difficulty in disassembly after long-term use due to thread jamming. This greatly reduces the user's operating threshold.

[0017] 2. The quick-release positioning structure of this device ensures precise alignment between the filter bottle and the valve head when the wrench is swung through the triple cooperation of the slide groove column, the arc-shaped movable groove and the slide groove. At the same time, the addition of metal reinforcing plates provides strength support for the positioning structure, avoiding positioning failure due to component deformation after long-term use, thus balancing quick-release convenience and connection stability.

[0018] 3. The quick-release wrench of this device adopts a double-layer structure of inner and outer frame layers, combined with metal reinforcing plates, which not only improves the overall deformation resistance of the wrench, but also avoids wear and breakage caused by long-term rotation of plastic parts, thus extending the service life of the product.

[0019] 4. The sealing seat at the lower end of the fixed valve head of the device is precisely matched with the open end of the filter bottle, and the sealing ring is installed on the inner side of the filter bottle to form an inner sealing structure, which is more resistant to water pressure impact than the outer sealing and effectively prevents water leakage.

[0020] 5. The upper casing of the device has a built-in LED display screen and PC control board. Together with the flow sensor in the universal valve head, it can provide real-time feedback on key information such as water flow status and filter cartridge usage. Users can intuitively grasp the operating status of the equipment through the display screen, avoiding the problem of filter cartridges being used beyond their expiration date due to blind use of traditional products, and realizing visualized intelligent management. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a structural schematic diagram from another perspective of the present invention.

[0023] Figure 3 This is an exploded view of the structure of this utility model.

[0024] Figure 4 This is a schematic diagram of the quick-release wrench in this utility model.

[0025] Figure 5 This is a schematic diagram of the structure of the metal reinforcing sheet in this utility model.

[0026] In the diagram: Filter bottle 1, Filter element assembly 11, Fixed valve head 12, Inlet / outlet water assembly 13, Sealing seat 14, Universal valve head 15, Inlet 16, Outlet 17, Quick-release wrench 2, Inner frame layer 21, Outer frame layer 22, Arc-shaped semi-enclosed part 23, Connecting part 24, Inclined part 25, Wrench part 26, Quick-release positioning structure 3, Arc-shaped movable part 31, Arc-shaped movable groove 32, Slide groove 33, Slide groove column 34, Rotating structure 4, Rotating hole 41, Metal reinforcing plate 42, Upper cover 5, LED display screen 51, PC control board 52, Product fixing bracket 53, Wall fixing bracket 54, Fixing base 55, Drain outlet 56. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1-5As shown, a threadless quick-release pre-filter includes a filter bottle 1 with an open top and a filter element assembly 11 inside. The open end of the filter bottle 1 has a fixed valve head 12 with an inlet / outlet assembly 13 on one side. A quick-release wrench 2 with a semi-enclosed structure is movably mounted on the outer side of the filter bottle 1. The upper end of the quick-release wrench 2 is rotatably connected to the fixed valve head 12, and the lower end of the quick-release wrench 2 has a wrench portion 26 located outside the filter bottle 1. The open ends of the quick-release wrench 2 and the filter bottle 1 have a quick-release positioning structure 3 that positions the filter bottle 1 and the fixed valve head 12 relative to each other when the quick-release wrench 2 swings circumferentially relative to the filter bottle 1. This threadless design eliminates the need for multiple rotations and tightening required in traditional filters, greatly simplifying the installation and disassembly process. It avoids the risks of stripped threads, insufficient tightening, or over-tightening, making disassembly difficult. Furthermore, installation and disassembly can be completed simply by swinging the quick-release wrench 2, making operation extremely simple and quick. Users can operate it by hand without professional tools, improving the user experience.

[0029] like Figure 3 As shown, the filter bottle 1 is cylindrical, and the lower end of the fixed valve head 12 has a sealing seat 14 that matches the open end of the filter bottle 1. A sealing ring is located circumferentially inwards from the outer side of the sealing seat 14, and circumferentially inwards from the open end of the filter bottle 1. The sealing seat 14 at the lower end of the fixed valve head 12 matches the open end of the cylindrical filter bottle, ensuring a tight fit. Simultaneously, the sealing ring is located circumferentially inwards from the sealing seat 14 and inwards from the filter bottle port. This design forms an effective compression seal, providing better leak prevention and effectively withstanding pipeline water pressure.

[0030] The quick-release wrench 2 has an inner frame layer 21 and an outer frame layer 22 located outside the inner frame layer 21, and the inner frame layer 21 and the outer frame layer 22 are matched in shape and size. The double-layer structure design provides higher mechanical strength and resistance to deformation, ensuring that it will not be damaged even after long-term frequent use. At the same time, both the inner frame layer 21 and the outer frame layer 22 are made of engineering plastics.

[0031] like Figure 4 As shown, the quick-release wrench 2 includes an arc-shaped semi-enclosed portion 23 located circumferentially outward from the open end of the filter bottle 1. The upper ends of both sides of the arc-shaped semi-enclosed portion 23 have connecting portions 24 extending upward to both sides of the fixed valve head 12. The connecting portions 24 are rotatably connected to the fixed valve head 12 via a rotating structure 4. The lower ends of both sides of the arc-shaped semi-enclosed portion 23 are respectively provided with inclined portions 25 extending obliquely to one side of the lower end of the filter bottle 1, and located below the arc-shaped semi-enclosed portion 23. The wrench portion 26 is connected between the lower ends of the two inclined portions 25. The downwardly inclined wrench portion 26 and the arc-shaped design at the end facilitate a natural grip and application of force by the user, making operation effortless and comfortable.

[0032] Combination Figure 1 and Figure 4As shown, the wrench part 26 is arc-shaped, and a gap is formed between the wrench part 26 and the lower circumferential outer edge of the filter bottle 1. The arc-shaped semi-enclosed part 23, the connecting part 24, the inclined part 25, and the wrench part 26 are integrated into a single structure. The gap between the wrench part 26 and the lower edge of the filter bottle ensures sufficient space for fingers to insert, facilitating operation. At the same time, the integrated structure means higher overall strength and stability, more direct and effective force transmission, and no failure due to loose parts.

[0033] Combination Figures 3-5 As shown, the rotating structure 4 includes rotating holes 41 on both sides of the fixed valve head 12. A metal reinforcing plate 42 is provided between the inner frame layer 21 and the outer frame layer 22. The upper end of the metal reinforcing plate 42 is rotatably connected to the rotating hole 41 through a rotating shaft passing through the inner frame layer 21. The addition of the metal reinforcing plate 42 inside the plastic part greatly enhances the strength and wear resistance of the key stress-bearing parts, avoids the problem of easy wear and breakage of pure plastic rotating shafts, and extends the product life. At the same time, the smooth and stable swing of the quick-release wrench 2 is achieved through the cooperation of the rotating shaft and the rotating hole 41.

[0034] Combination Figure 1 , Figure 3 and Figure 5 As shown, the quick-release positioning structure 3 includes an arc-shaped movable part 31 located at the lower end of the metal reinforcing plate 42 and inside both sides of the arc-shaped semi-enclosed part 23. The arc-shaped movable part 31 has an arc-shaped movable groove 32 extending to one end. The arc-shaped semi-enclosed part 23 has sliding grooves 33 on both sides that match the arc-shaped movable grooves 32. The upper ends of the filter bottle 1 have sliding groove columns 34 on both sides that can slide into the arc-shaped movable grooves 32. This structure converts the circumferential swing of the wrench into an upward pulling force and locking force on the filter bottle through the cooperation of the arc-shaped movable grooves 32 and the sliding groove columns 34. Simultaneously, the process of pulling the wrench is the locking or releasing process, resulting in high mechanical efficiency. This mechanical structure can generate a very large locking force, ensuring that the filter bottle and valve head will not detach under high pressure, ensuring high safety. Furthermore, when the wrench swings to a specific position, such as when the sliding groove column slides to the end of the movable groove, the user can feel the feedback that it is in place, clearly knowing whether it is locked.

[0035] like Figure 3 As shown, the upper end of the fixed valve head 12 is provided with an upper cover 5, and an LED display screen 51 is provided inside the upper cover 5. A PC control board 52 is connected to the lower side of the LED display screen 51. The LED display screen 51 can intuitively display information such as water flow rate, filtered water volume, and filter life, making it convenient for users to understand the water quality and equipment status in real time. At the same time, the PC control board 52 is used to uniformly process sensor data and control the display, realizing the intelligentization of the product.

[0036] Combination Figure 2 and Figure 3As shown, the inlet / outlet water assembly 13 includes a universal valve head 15 connected to the fixed valve head 12. One end of the universal valve head 15 has an inlet 16, and the other end has an outlet 17. The universal valve head 15 contains a flow sensor connected to the PC control board 52. A product mounting bracket 53 is located on the side of the universal valve head 15 away from the fixed valve head 12, and a wall mounting bracket 54 is connected to the outside of the product mounting bracket 53. The flow sensor can accurately monitor the water usage of the filter element in real time and transmit the data to the PC control board 52. The product mounting bracket 53 and the wall mounting bracket 54 make the installation more flexible; the bracket can be fixed to the wall first, and then the filter body can be hung, making the installation process clearer and more stable. The inlet 16 is connected to the outside of the filter element assembly 11 and the inside of the filter bottle 1, and the outlet 17 is connected to the inside of the filter assembly 11.

[0037] The filter element assembly 11 comprises a PP cotton layer and an activated carbon layer. A fixed base 55 is located at the lower end of the filter bottle 1, and a drain port 56, connected to the filter bottle 1, is located on the inner circumference of the fixed base 55. The filter element assembly 11 uses a 0.01-micron filter element, achieving water purification without affecting water flow. The lower-positioned drain port 56 allows users to easily and periodically open the valve to flush the filter bottle, removing trapped impurities, extending the filter element's lifespan, and reducing maintenance costs. The filter element assembly 11 employs a composite structure of a PP cotton layer and an activated carbon layer. The PP cotton effectively intercepts large particles of impurities such as sediment and rust in the water, while the activated carbon layer adsorbs residual chlorine and odors. This dual filtration meets the core needs of household pre-filtration, providing a more comprehensive filtration experience compared to a single PP cotton filter element.

[0038] The principle of this embodiment is as follows: Align the upper opening of the filter bottle 1 with the sealing seat 14 of the fixed valve head 12. The sealing ring on the outside of the sealing seat 14 is embedded inside the opening of the filter bottle 1 to form an initial seal. Hold the lever part 26 of the quick-release wrench 2 and swing it circumferentially towards the filter bottle 1. The arc-shaped semi-enclosed part 23 of the wrench drives the connecting parts 24 on both sides to rotate around the rotating structure 4. At the same time, the slide groove column 34 at the upper end of the filter bottle 1 slides along the slide groove 33 of the arc-shaped semi-enclosed part 23. When the slide rail column 34 is fully engaged in the end of the arc-shaped movable part 32 within the arc-shaped movable part 31, the arc-shaped movable part 31 and the filter bottle 1 are rigidly positioned. At this point, the quick-release wrench 2 can no longer be moved, and the filter bottle 1 and the fixed valve head 12 are firmly fixed, completing the installation. Similarly, by reversing the wrench part 25, the arc-shaped movable part 31 rotates synchronously with the wrench part 25, causing the slide rail column 34 of the filter bottle 1 to slide out of the arc-shaped movable part 32. Once the slide column 34 is completely out of the arc-shaped movable groove 32, the filter bottle 1 can be pulled down directly to separate it from the fixed valve head 12. The filter element can then be replaced or impurities inside the filter bottle can be cleaned. The flow sensor inside the universal valve head 15 monitors the water flow rate and cumulative flow in real time, transmitting the data to the PC control board 52. After processing the data, the PC control board 52 displays it intuitively on the LED display screen 51 inside the upper cover 5, showing information such as real-time flow, cumulative water consumption, and recommended filter element replacement time. Users can quickly grasp the equipment's operating status through the screen, preventing the filter element from exceeding its service life and affecting the filtration effect. After long-term use, impurities intercepted by the filter element assembly 11 will accumulate inside the filter bottle 1. At this time, there is no need to disassemble the filter bottle; simply open the drain port 56 inside the fixed base 55 at the lower end of the filter bottle 1, and use the tap water pressure to flush out the impurities at the bottom of the filter bottle from the drain port 56, completing the cleaning process, reducing the frequency of filter element replacement, and lowering maintenance costs.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0040] Although this document frequently uses terms such as filter bottle 1, filter element assembly 11, fixed valve head 12, inlet / outlet assembly 13, sealing seat 14, universal valve head 15, inlet 16, outlet 17, quick-release wrench 2, inner frame layer 21, outer frame layer 22, arc-shaped semi-enclosed part 23, connecting part 24, inclined part 25, wrench part 26, quick-release positioning structure 3, arc-shaped movable part 31, arc-shaped movable groove 32, slide groove 33, slide groove column 34, rotating structure 4, rotating hole 41, metal reinforcing plate 42, upper cover 5, LED display screen 51, PC control board 52, product fixing bracket 53, wall fixing bracket 54, fixing base 55, and drain outlet 56, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A threadless quick-release pre-filter, comprising a filter bottle (1) with an open top and a filter element assembly (11) inside, wherein the open end of the filter bottle (1) is provided with a fixed valve head (12) having an inlet / outlet water assembly (13) on one side, characterized in that, The filter bottle (1) is provided with a quick-release wrench (2) in a semi-enclosed structure on the outer side of the circumference. The upper end of the quick-release wrench (2) is rotatably connected to the fixed valve head (12), and the lower end of the quick-release wrench (2) has a wrench part (26) located on the outer side of the filter bottle (1). The open ends of the quick-release wrench (2) and the filter bottle (1) are provided with a quick-release positioning structure (3) that can position the filter bottle (1) and the fixed valve head (12) relative to the filter bottle (1) when the quick-release wrench (2) swings circumferentially relative to the filter bottle (1).

2. The threadless quick-release pre-filter according to claim 1, characterized in that, The filter bottle (1) is cylindrical and the lower end of the fixed valve head (12) has a sealing seat (14) that matches the open end of the filter bottle (1). The sealing seat (14) is provided with a sealing ring on the outer side of the circumference of the open end of the filter bottle (1) and on the inner side of the circumference of the open end of the filter bottle (1).

3. A threadless quick-release pre-filter according to claim 1 or 2, characterized in that, The quick-release wrench (2) has an inner frame layer (21) and an outer frame layer (22) located outside the inner frame layer (21), and the inner frame layer (21) and the outer frame layer (22) are matched in shape and size.

4. A threadless quick-release pre-filter according to claim 3, characterized in that, The quick-release wrench (2) includes an arc-shaped semi-enclosed part (23) arranged on the outer side of the open end of the filter bottle (1). The upper ends of the arc-shaped semi-enclosed part (23) on both sides have connecting parts (24) extending upward to both sides of the fixed valve head (12). The connecting parts (24) are rotatably connected to the fixed valve head (12) through a rotating structure (4). The lower ends of the arc-shaped semi-enclosed part (23) on both sides are provided with inclined parts (25) extending obliquely to one side of the lower end of the filter bottle (1) and located below the arc-shaped semi-enclosed part (23). The wrench part (26) is connected between the lower ends of the two inclined parts (25).

5. A threadless quick-release pre-filter according to claim 4, characterized in that, The wrench part (26) is arc-shaped and a gap is formed between the wrench part (26) and the lower circumferential outer side of the filter bottle (1). The arc-shaped semi-enclosed part (23), the connecting part (24), the inclined part (25) and the wrench part (26) are integrated into a single structure.

6. A threadless quick-release pre-filter according to claim 4, characterized in that, The rotating structure (4) includes rotating holes (41) on both sides of the fixed valve head (12). A metal reinforcing plate (42) is provided between the inner frame layer (21) and the outer frame layer (22). The upper end of the metal reinforcing plate (42) is rotatably connected to the rotating hole (41) through a rotating shaft passing through the inner frame layer (21).

7. A threadless quick-release pre-filter according to claim 6, characterized in that, The quick-release positioning structure (3) includes an arc-shaped movable part (31) located at the lower end of the metal reinforcing plate (42) and inside both sides of the arc-shaped semi-enclosed part (23). The arc-shaped movable part (31) is provided with an arc-shaped movable groove (32) extending to one end of the arc-shaped movable part (31). The arc-shaped semi-enclosed part (23) has a slide groove (33) on both sides that matches the arc-shaped movable groove (32). The filter bottle (1) has a slide groove column (34) on both sides of the upper end that can slide into the arc-shaped movable groove (32).

8. A threadless quick-release pre-filter according to claim 1, characterized in that, The fixed valve head (12) is provided with an upper cover (5) at the upper end, and an LED display screen (51) is provided inside the upper cover (5), and a PC control board (52) is connected to the lower side of the LED display screen (51).

9. A threadless quick-release pre-filter according to claim 8, characterized in that, The inlet and outlet water assembly (13) includes a universal valve head (15) connected to the fixed valve head (12). The universal valve head (15) has an inlet (16) at one end and an outlet (17) at the other end. The universal valve head (15) has a flow sensor connected to the PC control board (52). The universal valve head (15) is provided with a product fixing bracket (53) on the side away from the fixed valve head (12), and a wall fixing bracket (54) is connected to the outside of the product fixing bracket (53).

10. A threadless quick-release pre-filter according to claim 1, characterized in that, The filter element assembly (11) has a PP cotton layer and an activated carbon layer. The filter bottle (1) is provided with a fixed base (55) at the lower end, and the fixed base (55) is provided with a drain port (56) connected to the filter bottle (1) on the inner side of the circumference.

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