Pre-filter and water system

Abstract

The utility model discloses a pre-filter and a water system, and relates to the technical field of pre-filters, the pre-filter comprises a filter bottle and a pollution discharge assembly, the filter bottle is provided with a water filtering cavity and a pollution discharge port communicated with the water filtering cavity; the blow-down assembly comprises a blow-down valve directly or indirectly connected with the blow-down port, and a joint module connected with the blow-down valve; a blow-off pipe can penetrate through the joint module, and the joint module can clamp or loosen the blow-off pipe; and a flow path between the drain outlet and the blow-off pipe is disconnected or communicated through the blow-off valve. The joint module is installed at the tail end of the blow-down valve, the blow-down pipe is convenient to install or detach through the joint module, connection is reliable, and the blow-down pipe is not prone to disengagement during blow-down.

Description

Technical Field

[0001] This utility model relates to the field of pre-filter technology, and in particular to a pre-filter and a water system. Background Technology

[0002] A pre-filter typically includes a filter bottle and a valve head that connects to the filter bottle, a filter assembly, and a drain valve that connects to the drain outlet. The drain valve is connected to a drain pipe. If a clamping joint is used for fixing, the installation is cumbersome; if a flexible hose is used, it is easy to fall off during draining. Utility Model Content

[0003] The main purpose of this utility model is to propose a pre-filter and water system, which is designed to install a connector module at the end of the drain valve. This connector module allows for convenient installation or disassembly of the drain pipe, and the connection is reliable and not easily detached during draining.

[0004] To achieve the above objectives, the present invention proposes a pre-filter comprising a filter bottle and a drain assembly. The filter bottle has a water filtration chamber and a drain port communicating with the water filtration chamber. The drain assembly includes a drain valve directly or indirectly connected to the drain port and a connector module connected to the drain valve. The connector module allows a drain pipe to pass through, and the connector module can engage or disengage the drain pipe. The flow path between the drain port and the drain pipe is interrupted or connected by the drain valve.

[0005] In one embodiment, the sewage discharge assembly further includes a connector, one end of which is connected to the sewage outlet and the other end of which is connected to the sewage valve.

[0006] In one embodiment, the pre-filter further includes an impeller assembly disposed at the bottom of the filtration chamber, the impeller assembly including a mounting base, and the filtration chamber communicating with the drain outlet through the mounting base.

[0007] In one embodiment, one end of the connector is snapped into and fixed to the mounting base.

[0008] In one embodiment, the connector has a latching protrusion, and the mounting base has a buckle. The connector is fixed to the mounting base by engaging the latching protrusion with the buckle.

[0009] In one embodiment, the pre-filter further includes a reversing structure disposed below the impeller assembly. The reversing structure includes a reversing base, which is connected to the mounting base and is snapped into place at one end of the connector.

[0010] In one embodiment, the reversing base is snapped into place with the mounting base.

[0011] In one embodiment, the connector is provided with a latching protrusion, and the reversing bottom shell is provided with a buckle. The connector is fixed to the reversing bottom shell by engaging with the latching protrusion through the buckle.

[0012] In one embodiment, the connector module includes a fixed connector connected to the drain valve and a retaining ring movably built into the fixed connector. Along the axial direction of the filter bottle away from the drain valve, the retaining ring has a first position and a second position relative to the fixed connector. In the first position, the drain pipe can be disengaged from the retaining ring along the axial direction of the filter bottle. In the second position, the retaining ring engages and fixes the drain pipe.

[0013] In one embodiment, the fixed connector includes a connector body and a backstop ring. The connector body includes a first interface portion and a second interface portion. The first interface portion is connected to the drain valve. The backstop ring is embedded in the second interface portion. The inner diameter of the backstop ring gradually decreases from the first position to the second position. The pipe clamping ring abuts against the backstop ring at the second position.

[0014] In one embodiment, the connector module further includes a limiting clamp, and the end of the tube clamping ring away from the connector body is provided with a limiting part, the limiting part abutting against the limiting clamp to restrict the tube clamping ring from moving from the second position to the first position.

[0015] In one embodiment, one end of the tube clamp is exposed outside the connector body, and the limiting part is protruding from the outer periphery of the end. The limiting clamp is engaged with the tube clamp and is located between the limiting part and the fixed connector.

[0016] In one embodiment, the first interface portion is provided with a first flow channel, and the second interface portion is provided with a second flow channel, the first flow channel and the second flow channel are connected; the inner diameter of the second flow channel is larger than the inner diameter of the first flow channel, and a sealing element for contacting and sealing with the sewage pipe is provided in the second flow channel.

[0017] In one embodiment, the tube clamping ring has a plurality of deformation notches extending axially from one end along the filter bottle to form a clamping claw located between two adjacent deformation notches in the circumferential direction of the tube clamping ring.

[0018] In one embodiment, the connector is sealed to the drain outlet and to the drain valve.

[0019] In one embodiment, the outer wall of the connector along the axial direction of the filter bottle is sealed to the cavity wall of the drain port by an abutment sealing ring.

[0020] In one embodiment, the inner wall of the connector along the axial direction of the filter bottle is sealed to the outer wall of the drain valve by an abutment sealing ring.

[0021] This utility model also proposes a water system, including a pre-filter as described above.

[0022] The technical solution of this utility model uses a connector module to connect to the sewage discharge component in the pre-filter. Compared with the existing solution of fastening the pipe body to the sewage discharge valve, which makes the installation and replacement of the sewage discharge pipe cumbersome, the connector module has a snap-fit ​​or loosening mechanism, making the installation and disassembly of the sewage discharge pipe more convenient and quick, without the need for special tools, reducing maintenance costs and time. In addition, compared with the sewage discharge pipe made of soft material and sleeved on the sewage discharge valve, it is not easy to be knocked off by the impact of water flow during sewage discharge. Moreover, the connector module can be designed to adapt to various specifications and types of sewage discharge pipes, improving the compatibility and flexibility of the pre-filter, making it convenient for users to select and replace according to actual needs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of an embodiment of the pre-filter provided by this utility model;

[0025] Figure 2 A schematic diagram of another embodiment of the pre-filter provided by this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of one embodiment of the sewage discharge component;

[0027] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure in the middle;

[0028] Figure 5 for Figure 1 Structural diagram of the impeller assembly, commutation structure, and connecting parts;

[0029] Figure 6 for Figure 5 This is an exploded view of the mounting base.

[0030] Explanation of icon numbers:

[0031] 10. Filter bottle; 101. Filter chamber; 102. Drain outlet;

[0032] 20. Valve head; 201. Inlet; 202. Outlet;

[0033] 30. Filter components;

[0034] 40. Impeller assembly; 402. First water inlet; 403. Second water inlet; 404. Drain outlet;

[0035] 410. Mounting bracket;

[0036] 70. Reversing structure; 710. Reversing base shell; 720. Moving parts; 730. Suction cup;

[0037] 80. Sewage discharge assembly; 810. Connector; 820. Sewage discharge valve; 830. Connector module; 840. Fixed connector; 850. Connector body; 851. First interface section; 852. First flow channel; 853. Second interface section; 854. Second flow channel; 860. Anti-reverse ring; 870. Pipe clamping ring; 871. Limiting part; 872. Deformation notch; 873. Claw; 880. Limiting clamp.

[0038] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0040] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0041] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] A pre-filter typically includes a filter bottle and a valve head that connects to the filter bottle, a filter assembly, and a drain valve that connects to the drain outlet. The drain valve is connected to a drain pipe. If a clamping joint is used for fixing, the installation is cumbersome; if a flexible hose is used, it is easy to fall off during draining.

[0043] To address the aforementioned problems, this utility model proposes a pre-filter and a water system using the pre-filter.

[0044] Water systems, such as whole-house water purification systems, typically include a pre-filter. This pre-filter filters out large particles from tap water, ensuring water safety, extending the lifespan of appliances, preventing pipe blockages, and improving residents' health. The pre-filter is the first stage of coarse filtration in a whole-house water purification system. It usually contains a stainless steel filter screen and is a physical filtration device primarily used to intercept large particles larger than 40 microns, protecting downstream water safety.

[0045] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the pre-filter typically includes a valve head 20, a filter bottle 10, and a filter assembly 30. In another embodiment, the pre-filter includes a filter bottle 10 and a drain assembly 80 that is directly connected to the valve head 20 and the filter assembly 30 connected to the drain port 102. In another embodiment, the drain assembly 80 and the drain port 102 are indirectly connected through an intermediate part. The connector module 830 allows the drain pipe to pass through, and the connector module 830 can engage or disengage the drain pipe. The flow path between the drain port 102 and the drain pipe (not shown in the figure) is interrupted or connected by the drain valve 820.

[0046] The filter bottle 10 has a water filtration chamber 101, which is usually equipped with a filter assembly 30. The form and structure of the filter assembly 30 are not limited. The filter assembly 30 can be a stainless steel filter screen or a PP cotton filter screen. When water flows through, these filter screens can intercept large particles of impurities in the water and remove some sediment, rust, sand, bacteria and other particulate impurities generated in the pipes. This provides good protection for water purifiers, washing machines, shower heads, high-end faucets, downstream pipes and other equipment, reducing the risk of damage to these devices due to blockage by impurities.

[0047] The valve head 20 has an inlet 201 and an outlet 202 that are connected to the filter chamber 101. The inlet 201 is connected to the water supply end, and the outlet 202 is connected to the water consumption end. "It should be noted that the water supply end can be a tap water pipe, a water tower, or well water, and the water consumption end can be a faucet, a shower head, or a drinking water outlet. This application does not make any specific limitations on this."

[0048] Pre-filters are typically T-shaped, with the top horizontal section containing the inlet and outlet ports 202 on the left and right, the bottom vertical section containing the main body and internal cylindrical filter assembly 30, and the bottommost section containing the drain port 102. A valve controls the opening and closing of the filter.

[0049] To facilitate the installation and disassembly of the drain pipe while ensuring good fixation, this invention employs a connector module 830 in the pre-filter. The connector module 830 allows the drain pipe to pass through; the drain pipe is an external pipe body, such as a plastic tube or flexible hose. The type of drain valve 820 is not limited; it can be a gate valve, ball valve, etc. Fixing the drain pipe via the connector module 830 enables quick and easy installation on the filter bottle 10, improving reliability and simplifying maintenance and replacement. When drainage is required, the drain valve 820 is opened, allowing wastewater in the filtration chamber 101 to flow into the drain assembly 80 through the drain port 102 and be discharged externally through the drain pipe via the connector module 830. Closing the drain valve 820 stops the process, allowing normal filtration of the pre-filter.

[0050] The technical solution of this utility model connects the pre-filter to the drain assembly 80 using a connector module 830. Compared to the existing solution where the pipe body is fastened to the drain valve 820, making the installation and replacement of the drain pipe cumbersome, the connector module 830 has a snap-fit ​​or loosening mechanism, making the installation and disassembly of the drain pipe more convenient and quick, without the need for special tools, thus reducing maintenance costs and time. In addition, compared to using a soft material drain pipe sleeved on the drain valve 820, it is less likely to be knocked off by water flow during drainage. Furthermore, the connector module 830 can be designed to adapt to various specifications and types of drain pipes, improving the compatibility and flexibility of the pre-filter, making it easier for users to select and replace according to their actual needs.

[0051] The connector module 830 can be a quick-release connector structure commonly used in butt-connecting water pipes. For example, if a male connector is provided for fastening a sewage pipe, the connector module 830 can be provided with a female connector. During connection, the male connector is inserted into the female connector, the pin returns to its original position, and the steel ball rolls to lock, thus achieving the connection while allowing fluid flow. Alternatively, it can be a clamp-type flexible pipe connector. This type of connector consists of an end pipe, pipe clamp, sealing ring, bolt, and nut. Through the cooperation of the split outer clamp and the flexible rubber sealing ring, it achieves quick connection and sealing effect.

[0052] The drain valve 820 is the core component of the drain assembly 80, responsible for controlling the opening and closing of the drain port 102. By operating the drain valve 820, the drain flow path can be controlled, that is, the flow path between the drain port 102 and the drain pipe can be interrupted or connected.

[0053] Traditional connection methods rely solely on simple socketing or fasteners for fixation. This is to address the problem of loose connection and easy leakage between the drain outlet 102 and the drain valve 820.

[0054] Reference Figures 3 to 4 In this invention, the sewage discharge assembly 80 further includes a connector 810, one end of which is sealed to the sewage outlet 102, and the other end is sealed to the sewage valve 820. The connector 810, through its unique sealing structure, ensures a tight connection between the sewage outlet 102 and the sewage valve 820, effectively preventing water leakage.

[0055] Reference Figures 3 to 4 At the top is the connector 810, which is fixed to the impeller assembly 40 or the reversing assembly by a snap-fit ​​(connection). Figure 5 The connector 810 is designed with at least two sealing rings to seal with the drain outlet at the bottom of the filter bottle 10. In the middle is the drain valve 820, which is designed to open by rotating the handle 90 degrees counterclockwise.

[0056] The design of connector 810 facilitates easier disassembly and installation of components when replacing the drain valve 820 or performing other maintenance operations, thus improving the maintainability of the equipment. If adaptation to different types of pre-filters is required in the future, only connector 810 needs to be replaced.

[0057] Reference Figures 1 to 6 In addition, in order to improve the cleaning effect of the pre-filter, in one embodiment, the pre-filter also includes an impeller assembly 40 disposed at the bottom of the water filtration chamber 101. The impeller assembly 40 includes a mounting base 410, which is provided with a first water inlet 402 and a second water inlet 403 communicating with the water filtration chamber 101, and a drain outlet 404 communicating with the drain outlet 102 and the first water inlet 402 and the second water inlet 403.

[0058] The impeller assembly 40 is securely mounted at the bottom of the filter chamber 101. The mounting base 410 features a key water flow channel. When operating within the filter chamber 101, the impeller assembly 40, through its special design (such as impeller rotation), enhances water flow turbulence, making it easier for impurities in the water to be captured by the filter assembly 30, thereby improving filtration efficiency. During continuous operation, the rotation of the impeller assembly 40 also provides a self-cleaning effect, reducing scale and clogging in the filter assembly 30 and the filter chamber 101, extending the equipment's lifespan. During wastewater discharge, the impeller assembly 40, through its drain port 404 connected to the wastewater outlet 102, assists in discharging wastewater and impurities from the filter chamber 101 out of the system. Simultaneously, the impeller rotation may also promote the wastewater discharge process, making it more thorough.

[0059] In traditional solutions, assembly structures such as threads and locking protrusions need to be set at the drain port 102 of the filter bottle 10 to facilitate the assembly of the drain valve 820. In some scenarios, the setting of these assembly structures is not conducive to the standardization of the filter bottle 10. In order to make the filter bottle 10 more versatile and adaptable to different types of pre-filters,

[0060] This invention incorporates a connector 810 embedded within a drain outlet 102. The connector 810 has a tubular structure, with one end having an annular protrusion and the other end extending through and partially protruding from the filter bottle 10. The annular protrusion is larger than the inner diameter of the drain outlet 102, preventing the connector 810 from detaching along the axial direction of the filter bottle. The outer wall of the connector 810 along the axial direction of the filter bottle is sealed to the cavity wall of the drain outlet 102 via an abutment sealing ring. For a strong sealing effect, multiple sealing rings are arranged at intervals along the axial direction of the filter bottle. The material of the connector 810 is not limited; in this embodiment, plastic is used, which allows for better control over cost and fit quality. In this embodiment, three sealing rings are provided; in other embodiments, two, four, or even more may be used, depending on the actual dimensions.

[0061] The axial direction of filter bottle 10 is the discharge direction of the pre-filter. To ensure good overall integrity after the connection between connector 810 and drain valve 820, connector 810 and drain valve 820 adopt a male-female mating method so that they appear as a single tube structure when connected along the axial direction of filter bottle 10. Connector 810 and drain valve 820 can be plug-in or threaded; the specific structure is not limited.

[0062] In the impeller assembly 40 configuration, to simplify the product structure, one end of the connector 810 is snapped into the mounting base 410. The mounting base 410 and filter bottle 10 do not have a locking structure, eliminating the need for modifications to the filter bottle 10. The mounting base 410 is fixed to the filter bottle 10 by abutting against its periphery and secured by the connector 810. The connector 810 is externally connected to a drain pipe, making the connection between the connector 810 and the mounting base 410 more robust and reducing the risk of loosening due to vibration or water flow impact, thereby enhancing the overall structural stability of the pre-filter.

[0063] Furthermore, the snap-fit ​​design makes the installation and removal of the connector 810 and the mounting base 410 simple and quick, requiring no complicated tools or professional skills, thus reducing the difficulty of installation and maintenance. The simple installation and removal process, along with excellent sealing performance, reduces the complexity and cost of daily maintenance, allowing users to more conveniently maintain and repair the equipment.

[0064] Specifically, in one embodiment, the bottom of the mounting base 410 is provided with a buckle to engage with the annular protrusion at one end of the connector 810. The annular protrusion is provided with a locking protrusion. The connector 810 is fixed to the reversing base 710 or the mounting base 410 by engaging with the buckle and the locking protrusion, which improves versatility and adaptability.

[0065] Reference Figures 1 to 2 and Figure 5 To enable forward and reverse flushing switching, the pre-filter also includes a reversing structure 70 located below the impeller assembly 40. The reversing structure 70 includes a reversing base 710, which is connected to the mounting base 410 and is snapped into place at one end of the connector 810. The reversing structure 70 enables the forward and reverse flushing switching function of the pre-filter, primarily addressing the problem of cleaning impurities and dirt that may accumulate in the filter assembly 30 and the filter chamber 101 during long-term use. Traditional cleaning methods may not be thorough enough or require disassembly, while the forward and reverse flushing switching function allows cleaning of the filter assembly 30 and the filter chamber 101 by changing the water flow direction without disassembling the equipment, thereby improving cleaning effectiveness and convenience.

[0066] The reversing base 710 and the connector 810 are connected by a snap-fit ​​mechanism. This reversing structure 70 does not compromise the original structural stability; rather, the snap-fit ​​mechanism further enhances the connection stability between the connector 810, the mounting base 410, and the reversing base 710. With its forward and reverse flushing switching function, this pre-filter can adapt to more complex water quality environments and usage scenarios, such as areas with poor water quality or applications requiring higher filtration precision.

[0067] Reference Figures 1 to 6The reversing structure 70 also includes a movable part 720. The end of the movable part 720 is provided with a suction cup 730. A reversing cavity is formed between the reversing bottom shell 710 and the mounting base 410 for the suction cup 730 to be accommodated and moved. Under the action of water flow, the suction cup 730 moves up and down along the axial direction of the filter bottle 10, so that the water from the water supply end flows from the water filter chamber 101 into the filter assembly 30 and then flows out of the water filter chamber 101 from the filter assembly 30.

[0068] This utility model also improves the connector module 830 to facilitate the installation and removal of the sewage pipe and ensure the reliability of the sewage pipe assembly.

[0069] Specifically, the connector module 830 includes a fixed connector 840 connected to the drain valve 820 and a retaining ring 870 movably built into the fixed connector 840. Along the axial direction of the filter bottle 10 away from the drain valve 820, the retaining ring 870 has a first position and a second position relative to the fixed connector 840. In the first position, the drain pipe can be disengaged from the retaining ring 870 along the axial direction of the filter bottle 10. In the second position, the retaining ring 870 engages with the fixed drain pipe.

[0070] The movable design of the retaining ring 870 allows users to easily insert or remove the drain pipe from the connector module 830. When the retaining ring 870 is in the first position, the drain pipe can smoothly disengage from the retaining ring 870 along the axial direction of the filter bottle 10 without the need for tools or excessive force, thus improving the ease of installation and disassembly.

[0071] When the clamping ring 870 is moved to the second position, it securely engages and fixes the sewage pipe, preventing it from loosening or falling off during operation due to water flow impact or external forces. This robust connection method ensures the normal operation and reliability of the sewage system.

[0072] The switching between the first and second positions of the 870 tube clamp is simple and intuitive, allowing users to easily operate it as needed.

[0073] Indicator marks can be placed between the first and second positions to distinguish the operating direction. During the process of clamping and fixing the sewage pipe with the clamping ring 870, the tight fit between the clamping ring 870 and the sewage pipe can prevent the sewage pipe from falling off during sewage discharge. Convenient installation and disassembly, stable connection, and flexible operation provide users with a smoother, more reliable, and more convenient operating experience.

[0074] In this embodiment, the fixed connector 840 includes a connector body 850 and a backstop ring 860. The connector body 850 includes a first interface portion 851 and a second interface portion 853. The first interface portion 851 is connected to the drain valve 820. The backstop ring 860 is embedded in the second interface portion 853. The inner diameter of the backstop ring 860 gradually decreases from the first position to the second position. The tube clamping ring 870 abuts against the backstop ring 860 at the second position.

[0075] The first interface 851 is connected to the drain valve 820 via a plug-in or threaded connection. The outer diameters of the connector body 850 and the drain valve 820 body correspond to ensure overall consistency. The anti-reverse ring 860 is embedded in the second interface 853 of the connector body 850, and its inner diameter gradually decreases from the first position to the second position. This design allows the retaining ring 870 to tightly abut against the anti-reverse ring 860 when it moves to the second position, thus achieving a more secure locking and fixing. This stability prevents the drain pipe from loosening or falling off during operation.

[0076] In other embodiments, the connector body 850 and the anti-reverse ring 860 are integrally formed.

[0077] To prevent the drain pipe from detaching due to movement of the clamping ring 870 in case of misoperation, the connector module 830 also includes a limiting clamp 880. The end of the clamping ring 870 away from the connector body 850 is provided with a limiting part 871. The clamp is engaged with the clamping ring 870 to restrict the clamping ring 870 from moving from the second position to the first position.

[0078] The limiting clamp 880 engages with the pipe clamping ring 870. Especially when the pipe clamping ring 870 has a limiting part 871 at its end away from the connector body 850, it effectively restricts the movement of the pipe clamping ring 870 from the second position (i.e., the securely engaged position) to the first position (the disengaged position). This avoids the risk of the pipe clamping ring 870 accidentally loosening or falling off due to external factors (such as accidental collisions, water flow impacts, etc.). The limiting clamp 880 also serves as a safety locking mechanism, ensuring it does not interfere with normal user operations when not needed. Furthermore, when maintenance or replacement of the drain pipe is required, the user can easily remove the limiting clamp 880 for subsequent operations.

[0079] To facilitate the assembly of the tube clamping ring 870, the tube clamping ring 870 is provided with a plurality of deformation notches 872 extending axially from one end along the filter bottle 10, so as to form a claw 873 located between two adjacent deformation notches 872 in the circumferential direction of the tube clamping ring 870.

[0080] The number of clamping claws 873 can be two, three, or other numbers. When the deformation notch 872 of the clamping claws 873 is formed along the axial direction of the filter bottle 10 and passes through one end of the clamping ring 870, the clamping claws 873 can move closer or further apart due to deformation. When the clamping ring 870 is pushed to the first position, the clamping claws 873 open because the space increases, making it easier to insert the drain pipe. When the clamping ring 870 is pushed to the second position, the clamping claws 873 will retract inward due to the restriction of the deformation notch 872 and tightly grip the outer wall of the drain pipe. This clamping method is more stable than the traditional simple friction fixation and can effectively prevent the drain pipe from loosening or falling off during operation.

[0081] Furthermore, the design of the 873 clamp allows the 870 tube clamp to undergo elastic deformation rather than plastic deformation when subjected to external force. This means that the 870 tube clamp can maintain its shape and function even after repeated use, and is not prone to wear or damage. This durability not only extends the service life of the connector module 830, but also reduces the user's maintenance costs.

[0082] To ensure a tight seal, the first interface portion 851 has a first flow channel 852, and the second interface portion 853 has a second flow channel 854, which are connected. The inner diameter of the second flow channel 854 is larger than that of the first flow channel 852, and a sealing element is provided within the second flow channel 854 for sealing against the drain pipe. Because the inner diameter of the second flow channel 854 is larger than that of the first flow channel 852, the end face of the drain pipe abuts against the end faces of both the second and first flow channels 854, allowing the drain pipe opening to correspond to the flow channel of the first interface portion 851, reducing leakage. Furthermore, the sealing element directly abuts against and seals the drain pipe, preventing sewage or other impurities from seeping out of the connection, thus ensuring the overall sealing of the sewage system. Despite the addition of components such as the sealing element, the installation and disassembly process of the entire connector module 830 remains relatively simple. The user only needs to insert the drain pipe into the second flow channel 854 and ensure it is in close contact with the sealing element. Similarly, when disassembly is required, users can simply pull out the drain pipe. This convenience reduces the difficulty of operation and time costs for users.

[0083] This utility model also proposes a water system, which includes the aforementioned pre-filter, the specific structure of which is described below. Figures 1 to 6 Since this water system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0084] The water system includes at least the components from the pre-filter to the water outlet. For example, the water system may include household appliances such as water heaters, dishwashers, and water dispensers, as well as auxiliary components such as water pipes for domestic water use throughout the house.

[0085] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pre-filter, characterized in that, include: A filter bottle is provided with a water filtration chamber and a drain outlet connected to the water filtration chamber; and A sewage discharge assembly, comprising a sewage discharge valve directly or indirectly connected to the sewage discharge port, and a connector module connected to the sewage discharge valve; The connector module allows the sewage pipe to pass through, and the connector module can engage or disengage the sewage pipe; the flow path between the sewage outlet and the sewage pipe is interrupted or connected by the sewage valve.

2. The pre-filter as described in claim 1, characterized in that, The sewage discharge assembly also includes a connector, one end of which is connected to the sewage outlet and the other end of which is connected to the sewage valve.

3. The pre-filter as described in claim 2, characterized in that, The pre-filter also includes an impeller assembly located at the bottom of the filtration chamber. The impeller assembly includes a mounting base, and the filtration chamber is connected to the drain outlet through the mounting base.

4. The pre-filter as described in claim 3, characterized in that, One end of the connector is snapped into and fixed to the mounting base.

5. The pre-filter as described in claim 4, characterized in that, The connector has a locking protrusion, and the mounting base has a buckle. The connector is fixed to the mounting base by engaging with the locking protrusion through the buckle.

6. The pre-filter as described in claim 3, characterized in that, The pre-filter also includes a reversing structure located below the impeller assembly. The reversing structure includes a reversing base, which is connected to the mounting base and is snapped into place at one end of the connector.

7. The pre-filter as described in claim 6, characterized in that, The reversing base is snapped into place with the mounting base.

8. The pre-filter as described in claim 7, characterized in that, The connector is provided with a locking protrusion, and the reversing bottom shell is provided with a buckle. The connector is fixed to the reversing bottom shell by engaging with the locking protrusion through the buckle.

9. The pre-filter as described in claim 2, characterized in that, The connector is sealed to the drain outlet, and the connector is sealed to the drain valve.

10. The pre-filter as described in claim 9, characterized in that, The connector is sealed to the outer wall of the filter bottle along the axial direction by an abutment sealing ring.

11. The pre-filter as claimed in claim 10, characterized in that, The sealing rings include multiple rings, which are arranged at intervals along the axial direction of the filter bottle.

12. The pre-filter as described in claim 1, characterized in that, The connector module includes a fixed connector connected to the drain valve and a retaining ring movably built into the fixed connector. Along the axial direction of the filter bottle away from the drain valve, the retaining ring has a first position and a second position relative to the fixed connector. In the first position, the drain pipe can be disengaged from the retaining ring along the axial direction of the filter bottle. In the second position, the retaining ring engages and fixes the drain pipe.

13. The pre-filter as described in claim 12, characterized in that, The fixed connector includes a connector body and a backstop ring. The connector body includes a first interface portion and a second interface portion. The first interface portion is connected to the drain valve. The backstop ring is embedded in the second interface portion. The inner diameter of the backstop ring gradually decreases from the first position to the second position. The pipe clamping ring abuts against the backstop ring at the second position.

14. The pre-filter as described in claim 13, characterized in that, The connector module also includes a limiting clamp. The end of the tube clamping ring away from the connector body is provided with a limiting part. The limiting part abuts against the limiting clamp to restrict the tube clamping ring from moving from the second position to the first position.

15. The pre-filter as described in claim 14, characterized in that, One end of the tube clamp is exposed outside the connector body, and the limiting part is protruding from the outer periphery of the end. The limiting clamp is engaged with the tube clamp and is located between the limiting part and the fixed connector.

16. The pre-filter as described in claim 13, characterized in that, The first interface portion is provided with a first flow channel, and the second interface portion is provided with a second flow channel. The first flow channel and the second flow channel are connected. The inner diameter of the second flow channel is larger than the inner diameter of the first flow channel, and a sealing element is provided in the second flow channel for sealing against the sewage pipe.

17. The pre-filter as described in claim 13, characterized in that, The tube clamping ring has a plurality of deformation notches extending along the axial direction of the filter bottle to form a clamping claw located between two adjacent deformation notches in the circumferential direction of the tube clamping ring.

18. A water supply system, characterized in that, Includes a pre-filter as described in any one of claims 1 to 17.

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