Portable water purifier

Abstract

The portable water purifier comprises a base, a barrel and a filter element, the base is provided with a pure water channel, a waste water channel and a pressure relief channel, the pure water channel corresponds to the pure water outlet end of the filter element, the waste water channel and the pressure relief channel correspond to the waste water outlet end of the filter element, and a pressure relief valve is arranged in the pressure relief channel; the waste water channel and the pressure relief channel are arranged in parallel, the water outlet ends of the waste water channel and the pressure relief channel are communicated with a waste water outlet of the water purifier, and the filter element keeps running under the pressure lower than the critical pressure under the pressure relief effect of the pressure relief valve; when the waste water outlet end of the filter element exceeds the critical pressure, the pressure relief valve opens the pressure relief channel, so that waste water is discharged to the waste water outlet of the water purifier through the waste water channel and the pressure relief channel. According to the scheme, the pressure relief valve can automatically open the pressure relief channel, the pressure of the waste water outlet end is reduced to be lower than the critical pressure, and therefore the risks that due to the fact that the pressure of the waste water outlet end is too high, the cavity is damaged, and the performance of the filter element is damaged are effectively avoided, and normal use and safety of the water purifier are guaranteed.

Description

Technical Field

[0001] This application relates to the field of water purification equipment technology, specifically to a portable water purifier. Background Technology

[0002] There are various types of water purifiers on the market, but they are mainly divided into electric water purifiers and non-electric water purifiers. Electric water purifiers need to be connected to a power source to operate, while non-electric water purifiers can be used without a power source. Among them, portable water purifiers are a common type of non-electric water purifiers. Portable water purifiers are usually used in field or outdoor operations to filter and sterilize water sources in the field or outdoors. They are often used by the military, rescue operations, and outdoor workers.

[0003] Existing portable water purifiers typically consist of a base, a cylindrical body, and a top cover. The cylindrical body houses a reverse osmosis filter cartridge, while the top cover features a raw water inlet and a manual pressurization device. The manual pressurization device pressurizes the raw water entering through the inlet, forcing it into the reverse osmosis filter cartridge. The filtered pure water is discharged at the pure water outlet, and wastewater is discharged at the wastewater outlet. Therefore, the base usually has two water outlet paths: one for pure water and the other for wastewater. However, during use, rapid increases in the inlet water flow, filter cartridge blockage, and rapid operation of the manual pressurization device can all cause excessive pressure within the filter cartridge. Furthermore, the limited drainage capacity of the wastewater outlet makes rapid pressure reduction difficult. Prolonged excessive pressure can damage the filter cartridge chamber and impair its performance, reducing the purifier's lifespan and filtration efficiency, and also posing certain safety hazards. Utility Model Content

[0004] This application provides a portable water purifier to improve or solve, to some extent, the technical problems of existing portable water purifiers that are prone to excessive pressure leading to damage to the filter cartridge cavity and impaired filter cartridge performance.

[0005] The technical solution adopted in this application is as follows:

[0006] A portable water purifier includes a base and a cylindrical body mounted on the base. A filter element is disposed within the cylindrical body. The base has a pure water channel, a wastewater channel, and a pressure relief channel. The pure water channel corresponds to the pure water outlet of the filter element, and the wastewater channel and the pressure relief channel correspond to the wastewater outlet of the filter element. A pressure relief valve is disposed within the pressure relief channel. The wastewater channel and the pressure relief channel are connected in parallel, and their outlets are connected to the wastewater outlet of the water purifier. Under the pressure relief action of the pressure relief valve, the filter element operates below a critical pressure. When the wastewater outlet of the filter element exceeds the critical pressure, the pressure relief valve opens the pressure relief channel, allowing wastewater to be discharged through the wastewater channel and the pressure relief channel to the wastewater outlet of the water purifier.

[0007] In this technical solution, a pressure relief channel connected in parallel to the wastewater channel is installed on the base of the portable water purifier. A pressure relief valve is installed within this channel, and the opening pressure of the valve can be set to a suitable critical pressure. When the pressure at the wastewater outlet is below the critical pressure, it will not cause damage to the cavity or the filter element. When the pressure at the wastewater outlet reaches the critical pressure, the pressure relief valve opens the pressure relief channel, changing the water purifier from a state where only the wastewater channel discharges wastewater to a state where both the wastewater channel and the pressure relief channel participate in wastewater discharge. This effectively increases the wastewater discharge flow rate, achieving automatic pressure relief at the wastewater outlet and reducing the pressure at the outlet below the critical pressure. This effectively avoids the risk of cavity damage and filter element performance damage caused by excessive pressure at the wastewater outlet, ensuring the normal use and safety of the water purifier.

[0008] The pressure relief valve includes a valve core and a spring. The spring is located between the valve core and the base. When the pressure in the wastewater outlet reaches a critical pressure, the valve core can move in the direction of compressing the spring to open the pressure relief channel. When the pressure in the wastewater outlet drops below the critical pressure, the spring resets the valve core.

[0009] This technical solution defines the specific structure of the pressure relief valve, which includes a valve core and a spring. The spring is positioned between the valve core and the base. The spring and valve core provide dynamic pressure response. When the pressure inside the wastewater outlet reaches the critical pressure, the valve core moves and compresses the spring, opening the pressure relief channel. When the pressure inside the wastewater outlet drops below the critical pressure, the spring automatically resets the valve core. This structural design is simple and reliable, enabling automatic pressure regulation and pressure relief. Moreover, the elastic reset function of the spring ensures automatic closure after pressure relief, preventing continuous leakage and simplifying the need for manual intervention.

[0010] The valve core includes a valve core body and a first sealing ring disposed on the valve core body. The first sealing ring is pressed between the edge of the valve core body and the pressure relief channel under the action of the spring pressure to seal the pressure relief channel.

[0011] In this technical solution, by setting a first sealing ring on the valve core body, and the first sealing ring being squeezed between the valve core body and the edge of the pressure relief channel under the action of spring pressure, the pressure relief channel is effectively sealed, preventing wastewater from leaking from the pressure relief channel in the non-pressure relief state, thus ensuring the sealing performance and normal operation of the water purifier.

[0012] The valve core body is provided with a guide post and an annular groove surrounding the guide post. The pressure relief channel is provided with a guide slide that slides with the guide post. The first sealing ring is sleeved on the guide post and installed in the annular groove.

[0013] In this technical solution, a guide post and an annular groove are provided in the valve core body, and a guide slide is provided in the pressure relief channel. The guide post and the guide slide slide slide together to ensure that the valve core moves along the preset path and avoids deflection and jamming. The first sealing ring is sleeved on the guide post and installed in the annular groove to prevent it from falling off the guide post due to pressure fluctuations. This makes the valve core more stable and accurate during movement, ensuring the normal opening and closing of the pressure relief valve and improving the working performance of the pressure relief valve.

[0014] The base is provided with an installation port corresponding to the pressure relief channel, and the pressure relief valve is detachably installed in the pressure relief channel through the installation port.

[0015] In this technical solution, the pressure relief valve is detachably installed in the pressure relief channel through the installation port, which facilitates the installation and disassembly of the pressure relief valve, and makes it easy to maintain and replace the pressure relief valve, thereby improving the maintainability of the water purifier. In addition, it can also realize the replacement of pressure relief valves with different pressure thresholds to adapt to different critical pressure relief requirements.

[0016] The base is provided with a cover for opening or closing the mounting port, the cover restricting the pressure relief valve within the pressure relief channel.

[0017] In this technical solution, a cover is provided on the base for opening or closing the installation port, which ensures the stability of the pressure relief valve during operation, prevents it from falling out of the pressure relief channel due to vibration or other reasons, and also facilitates the protection and maintenance of the pressure relief valve.

[0018] The cover includes a stop portion that is inserted into the pressure relief channel, and the stop portion has a limiting cavity that cooperates with the pressure relief valve.

[0019] In this technical solution, the limiting cavity is adapted to the pressure relief valve to ensure that the pressure relief valve remains accurately aligned during the pressure relief process, avoiding sealing failure or pressure relief delay due to misalignment.

[0020] The cover is equipped with a second sealing ring, which forms a seal between the cover and the inner wall of the pressure relief channel when the cover is closed over the installation opening.

[0021] In this technical solution, when the cover closes the installation port, the second sealing ring forms a seal between the cover and the inner wall of the pressure relief channel, preventing external dust, moisture, etc. from entering the pressure relief channel and affecting the normal operation of the pressure relief valve. At the same time, it further improves the overall sealing performance of the water purifier.

[0022] The base is provided with a wastewater drainage channel and a pure water drainage channel. The outlet of the wastewater channel and the outlet of the pressure relief channel are connected to the wastewater outlet of the water purifier through the wastewater drainage channel. The pure water channel is connected to the pure water outlet of the water purifier through the pure water drainage channel.

[0023] In this technical solution, a wastewater drainage channel and a pure water drainage channel are set on the base, so that the wastewater discharged from the wastewater channel and the pressure relief channel and the water discharged from the pure water channel can be discharged through their respective corresponding drainage channels, avoiding the mixing and pollution of wastewater and pure water, ensuring the smoothness and independence of drainage, and ensuring the safety of the effluent water quality. In addition, the wastewater channel and the pressure relief channel share the wastewater drainage channel, which integrates the wastewater drainage path compared to their independent drainage, and simplifies the base structure.

[0024] Along the drainage path of the wastewater drainage channel, the connection point between the wastewater channel and the wastewater drainage channel is located downstream of the connection point between the pressure relief channel and the wastewater drainage channel.

[0025] In this technical solution, when the pressure relief channel is opened for pressure relief, the flow velocity of the water in the pressure relief channel is generally greater than that of the water in the wastewater channel. The water in the pressure relief channel passes through the wastewater channel during its flow in the wastewater drainage channel, and the water in the wastewater channel merges with it. Under the driving effect of the high-velocity water flow, the water in the wastewater channel is discharged at a faster speed, thereby increasing the pressure relief speed and achieving rapid pressure relief.

[0026] Due to the adoption of the above technical solution, the technical effect achieved by this application is as follows: By setting a pressure relief channel in parallel with the wastewater channel on the base of the portable water purifier, and installing a pressure relief valve in the pressure relief channel, the opening pressure of the pressure relief valve can be set to a suitable critical pressure. When the pressure in the wastewater outlet is below the critical pressure, it will not cause damage to the cavity or the filter element performance. When the pressure in the wastewater outlet reaches the critical pressure, the pressure relief valve opens the pressure relief channel, changing the state of the water purifier from only discharging wastewater through the wastewater channel to a state where the wastewater channel and the pressure relief channel participate in wastewater discharge together. This effectively expands the wastewater discharge flow rate, realizes automatic pressure relief at the wastewater outlet, and reduces the pressure in the wastewater outlet to below the critical pressure. This effectively avoids the risk of cavity damage and filter element performance damage caused by excessive pressure at the wastewater outlet, ensuring the normal use and safety of the water purifier. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is an assembly diagram of the portable water purifier provided in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram of the structure of the base provided in the embodiment of this application;

[0030] Figure 3 A cross-sectional view of the base provided in the embodiment of this application under an exploded state;

[0031] Figure 4 A cross-sectional view of the base provided in the embodiment of this application in its assembled state. Figure 1 This indicates that the valve core is in a closed pressure relief channel;

[0032] Figure 5 A cross-sectional view of the base provided in the embodiment of this application in its assembled state. Figure 2 This indicates that the valve core is in the open pressure relief channel;

[0033] Figure 6 This is a cross-sectional view of the valve core body provided in an embodiment of this application;

[0034] Figure 7 This is a cross-sectional view of the cover provided in an embodiment of this application;

[0035] Figure 8 This is a cross-sectional view of the base provided in an embodiment of this application.

[0036] List of components and reference numerals:

[0037] 1. Base, 11. Pure water channel, 12. Wastewater channel, 13. Pressure relief channel, 14. Guide slide, 15. Guide block, 16. Mounting port, 17. Cover, 171. Stop, 172. Limiting cavity, 18. Wastewater drainage channel, 19. Pure water drainage channel.

[0038] 2. Cylinder body;

[0039] 3. Pressure relief valve, 31. Valve core, 311. Valve core body, 3111. Guide post, 3112. Annular groove, 312. First sealing ring, 32. Spring;

[0040] 4. Second sealing ring. Detailed Implementation

[0041] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0042] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0043] Furthermore, it should be understood in the description of this application that the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "lateral," and "longitudinal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0046] In the embodiments of this application, a portable water purifier is provided. For ease of explanation and understanding, the following descriptions are based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is merely a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application.

[0047] Reference Figures 1 to 8 As shown, the portable water purifier provided in this application includes a base 1 and a cylindrical body 2 installed on the base 1. A filter element is provided inside the cylindrical body 2. The base 1 is provided with a pure water channel 11, a wastewater channel 12, and a pressure relief channel 13. The pure water channel 11 corresponds to the pure water outlet of the filter element, and the wastewater channel 12 and the pressure relief channel 13 correspond to the wastewater outlet of the filter element. A pressure relief valve 3 is provided inside the pressure relief channel 13. The wastewater channel 12 and the pressure relief channel 13 are arranged in parallel. The outlets of the wastewater channel 12 and the pressure relief channel 13 are connected to the wastewater outlet of the water purifier. Under the pressure relief action of the pressure relief valve 3, the filter element maintains operation below the critical pressure. When the wastewater outlet of the filter element exceeds the critical pressure, the pressure relief valve 3 opens the pressure relief channel 13, allowing wastewater to be discharged to the wastewater outlet of the water purifier through the wastewater channel 12 and the pressure relief channel 13. The filter element is not shown in the attached figure. For example, a reverse osmosis filter element with a central tube can be used. The lower end of the central tube forms a pure water outlet that connects to the pure water channel 11. The raw water is pressurized and enters the upper shaft end of the reverse osmosis filter element. The lower shaft end of the reverse osmosis filter element forms a wastewater outlet and corresponds to the wastewater channel 12 and the pressure relief channel 13.

[0048] It should be noted that in this scheme, the critical pressure refers to a preset value of pressure reached at the wastewater outlet. When this value is exceeded, the pressure relief valve 3 will automatically open to release the pressure, thereby protecting the chamber and filter element from high-pressure damage. The specific value of the critical pressure is not limited; its setting can be based on the following factors: the material strength of the chamber and filter element; the system's design operating pressure range; and a safety margin (usually set slightly lower than the actual breaking pressure). In a specific example, if the critical pressure at the wastewater outlet is set to 0.5 MPa, when the pressure at the wastewater outlet reaches or exceeds 0.5 MPa, the pressure relief valve 3 will automatically open to release some pressure until the pressure drops below 0.5 MPa, at which point the pressure relief valve 3 will close again.

[0049] In this technical solution, a pressure relief channel 13 is set on the base 1 of the portable water purifier. The pressure relief channel 13 is connected in parallel with the wastewater channel 12, and a pressure relief valve 3 is installed in the pressure relief channel 13. The pressure relief channel 13 has the function of assisting in the discharge of wastewater to relieve pressure. The opening pressure of the pressure relief valve 3 can be set to a suitable critical pressure. When the pressure in the wastewater outlet is below the critical pressure, it will not cause damage to the cavity where the filter element is located or damage to the performance of the filter element. When the pressure in the wastewater outlet reaches the critical pressure, the pressure relief valve 3 opens the pressure relief channel 13, so that the water purifier changes from the state where only the wastewater channel 12 discharges wastewater to the state where the wastewater channel 12 and the pressure relief channel 13 participate in the discharge of wastewater. This effectively increases the wastewater discharge flow rate, realizes automatic pressure relief at the wastewater outlet, and reduces the pressure in the wastewater outlet to below the critical pressure. This effectively avoids the risk of cavity damage and filter element performance damage caused by excessive pressure at the wastewater outlet, ensuring the normal use and safety of the water purifier.

[0050] Regarding the specific structure of the pressure relief valve 3, as a preferred embodiment of this application, as follows: Figure 3 , Figure 4 and Figure 5 As shown, the pressure relief valve 3 includes a valve core 31 and a spring 32. The spring 32 is located between the valve core 31 and the base 1. When the critical pressure is reached in the wastewater outlet, the valve core 31 can move along the direction of compressing the spring 32 to open the pressure relief channel 13. When the pressure in the wastewater outlet drops below the critical pressure, the spring 32 resets the valve core 31. Specifically, as shown... Figure 5 The image shows the valve core 31 in the state where the pressure relief channel 13 is open, as shown. Figure 4The diagram shows the state where the valve core 31 closes the pressure relief channel 13. In this technical solution, the specific structure of the pressure relief valve 3 is defined. The pressure relief valve 3 includes a valve core 31 and a spring 32. The spring 32 is disposed between the valve core 31 and the base 1. The spring 32 and the valve core 31 provide a dynamic pressure response. When the valve core 31 closes the pressure relief channel 13, the critical pressure is the force that can push the valve core 31 to move and compress the spring 32. When the pressure inside the wastewater outlet reaches the critical pressure, the valve core 31 moves and compresses the spring 32, opening the pressure relief channel 13. When the pressure inside the wastewater outlet drops below the critical pressure, the spring 32 can automatically reset the valve core 31. This structural design is simple and reliable, enabling automatic pressure regulation and pressure relief functions. Moreover, the elastic reset function of the spring 32 ensures automatic closure after pressure relief, avoiding continuous leakage and simplifying the need for manual intervention.

[0051] Furthermore, such as Figures 3 to 6 As shown, the valve core 31 includes a valve core body 311 and a first sealing ring 312 disposed on the valve core body 311. The first sealing ring 312 is pressed between the valve core body 311 and the edge of the pressure relief channel 13 under the pressure of the spring 32, thereby sealing the pressure relief channel 13. Specifically, to ensure reliable operation of the valve core 31, the valve core body 311 can be made of a rigid structure, while the first sealing ring 312 can be made of a deformable flexible structure, such as a silicone ring. In this technical solution, by setting the first sealing ring 312 on the valve core body 311, and by pressing the first sealing ring 312 between the valve core body 311 and the edge of the pressure relief channel 13 under the pressure of the spring 32, an effective seal is achieved for the pressure relief channel 13, preventing wastewater leakage from the pressure relief channel 13 in a non-pressure-relieved state, thus ensuring the water purifier's sealing performance and normal operation.

[0052] Furthermore, such as Figures 4 to 6As shown, the valve core body 311 is provided with a guide post 3111 and an annular groove 3112 surrounding the guide post 3111. The pressure relief channel 13 is provided with a guide slide 14 that slides with the guide post 3111. The first sealing ring 312 is sleeved on the guide post 3111 and installed in the annular groove 3112. Specifically, a guide block 15 can be formed by protruding inward on the hole wall of the pressure relief channel 13. The guide block 15 surrounds the guide slide 14. When the valve core 31 closes the pressure relief channel 13, the first sealing ring 312 is squeezed between the valve core body 311 and the guide block 15 under the pressure of the spring 32. In this technical solution, a guide post 3111 and an annular groove 3112 are provided in the valve core body 311, and a guide slide 14 is provided in the pressure relief channel 13. The guide post 3111 and the guide slide 14 slide in a sliding fit to ensure that the valve core 31 moves along a preset path and avoids deflection and jamming. The first sealing ring 312 is sleeved on the guide post 3111 and installed in the annular groove 3112 to prevent it from falling off the guide post 3111 due to pressure fluctuations. This makes the valve core 31 more stable and accurate during movement, ensuring the normal opening and closing of the pressure relief valve 3 and improving the working performance of the pressure relief valve 3.

[0053] As a preferred embodiment of this application, such as Figure 3 As shown, the base 1 has a mounting port 16 corresponding to the pressure relief channel 13, and the pressure relief valve 3 is detachably installed in the pressure relief channel 13 through the mounting port 16. In this technical solution, the pressure relief valve 3 is detachably installed in the pressure relief channel 13 through the mounting port 16, which facilitates the installation and removal of the pressure relief valve 3, and makes it easier to maintain and replace the pressure relief valve 3, thereby improving the maintainability of the water purifier. Moreover, it also allows for the replacement of pressure relief valves 3 with different pressure thresholds to adapt to different critical pressure relief requirements.

[0054] Furthermore, such as Figures 3 to 7 As shown, the base 1 is provided with a cover 17 for opening or closing the mounting port 16. The cover 17 restricts the pressure relief valve 3 within the pressure relief channel 13. Specifically, the cover 17 can be detachably connected to the base 1 by means of snap-fit, threaded engagement, screw connection, etc., thereby facilitating the opening of the mounting port 16. In this technical solution, the cover 17 on the base 1 for opening or closing the mounting port 16 ensures the stability of the pressure relief valve 3 during operation, prevents it from coming out of the pressure relief channel 13 due to vibration or other reasons, and also facilitates the protection and maintenance of the pressure relief valve 3.

[0055] In a preferred embodiment, such as Figure 4 and Figure 7As shown, the cover 17 includes a stop portion 171 that is inserted into the pressure relief channel 13, and the stop portion 171 has a limiting cavity 172 that cooperates with the pressure relief valve 3. In this technical solution, the limiting cavity 172 is adapted to the pressure relief valve 3 to ensure that the pressure relief valve 3 maintains accurate alignment during the pressure relief process, avoiding sealing failure or pressure relief delay due to misalignment. Specifically, in the aforementioned embodiment where the valve core 31 includes a valve core body 311 and a spring 32, after the cover 17 is closed to the mounting opening 16, the limiting cavity 172 can be used to restrict the spring 32, providing guidance for the deformation of the spring 32.

[0056] In a preferred embodiment, such as Figure 3 and Figure 4 As shown, the cover 17 is equipped with a second sealing ring 4. When the cover 17 closes the mounting opening 16, the second sealing ring 4 forms a seal between the cover 17 and the inner wall of the pressure relief channel 13. In this technical solution, when the cover 17 closes the mounting opening 16, the second sealing ring 4 forms a seal between the cover 17 and the inner wall of the pressure relief channel 13, preventing external dust, moisture, etc. from entering the pressure relief channel 13 and affecting the normal operation of the pressure relief valve 3. It also further improves the overall sealing performance of the water purifier.

[0057] As a preferred embodiment of this application, such as Figure 2 and Figure 8 As shown, the base 1 is equipped with a wastewater drainage channel 18 and a pure water drainage channel 19. The outlets of the wastewater channel 12 and the pressure relief channel 13 are connected to the wastewater outlet of the water purifier through the wastewater drainage channel 18, and the pure water channel 11 is connected to the pure water outlet of the water purifier through the pure water drainage channel 19. In this technical solution, the wastewater drainage channel 18 and the pure water drainage channel 19 are provided on the base 1, so that the wastewater discharged from the wastewater channel 12 and the pressure relief channel 13 and the pure water discharged from the pure water channel 11 can be discharged through their respective drainage channels, avoiding the mixing and contamination of wastewater and pure water, ensuring the smoothness and independence of drainage, and ensuring the safety of the output water quality. In addition, the wastewater channel 12 and the pressure relief channel 13 share the wastewater drainage channel 18 for drainage, which integrates the wastewater drainage path and simplifies the base structure compared to their independent drainage. Of course, if there is a corresponding need, the wastewater channel 12 and the pressure relief channel 13 can also drain independently without the need for them to merge through the wastewater drainage channel 18.

[0058] In a preferred embodiment, along the drainage path of the wastewater drainage channel 18, the connection point between the wastewater channel 12 and the wastewater drainage channel 18 is located downstream of the connection point between the pressure relief channel 13 and the wastewater drainage channel 18. Those skilled in the art will understand that the pressure relief valve 3 opens the pressure relief channel 13 based on the wastewater outlet exceeding the critical pressure. This results in the water flow velocity within the pressure relief channel 13 being generally greater than the water flow velocity within the wastewater channel 12 when the pressure relief channel 13 is opened for pressure relief. Since the connection point between the wastewater channel 12 and the wastewater drainage channel 18 is downstream of the connection point between the pressure relief channel 13 and the wastewater drainage channel 18, the water flow within the pressure relief channel 13 passes through the wastewater channel 12 during its flow in the wastewater drainage channel 18, merging with it. Under the influence of the high-velocity water flow, the water flow in the wastewater channel 12 is accelerated for discharge, thereby increasing the pressure relief speed and achieving rapid pressure relief.

[0059] In actual use, the portable water purifier of this application allows raw water to enter and be filtered by the filter element. Pure water is discharged from the pure water channel 11 through the pure water drain channel 19, while wastewater is discharged from the wastewater channel 12 through the wastewater drain channel 18. When the pressure at the wastewater outlet reaches a critical pressure, the pressure relief valve 3 opens, allowing raw water to be discharged from the wastewater channel 12 and the pressure relief channel 13 through the wastewater drain channel 18, thus reducing the pressure at the wastewater outlet. When the pressure at the wastewater outlet drops below the critical pressure, the pressure relief valve 3 closes, and normal operation continues. If maintenance or replacement of the pressure relief valve 8 is required, it can be operated simply by opening the cover 17 and accessing it through the mounting port 16.

[0060] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0061] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0062] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A portable water purifier, comprising a base and a cylindrical body mounted on the base, wherein a filter element is disposed within the cylindrical body, characterized in that, The base is provided with a pure water channel, a wastewater channel and a pressure relief channel. The pure water channel corresponds to the pure water outlet of the filter element, and the wastewater channel and the pressure relief channel correspond to the wastewater outlet of the filter element. A pressure relief valve is provided in the pressure relief channel. The wastewater channel and the pressure relief channel are connected in parallel. The outlet of the wastewater channel and the pressure relief channel are connected to the wastewater outlet of the water purifier. Under the pressure relief action of the pressure relief valve, the filter element operates below the critical pressure. When the wastewater outlet of the filter element exceeds the critical pressure, the pressure relief valve opens the pressure relief channel, allowing wastewater to be discharged through the wastewater channel and the pressure relief channel to the wastewater outlet of the water purifier.

2. The portable water purifier according to claim 1, characterized in that, The pressure relief valve includes a valve core and a spring. The spring is located between the valve core and the base. When the wastewater outlet reaches a critical pressure, the valve core can move in the direction of compressing the spring to open the pressure relief channel. When the pressure at the wastewater outlet drops below the critical pressure, the spring resets the valve core.

3. The portable water purifier according to claim 2, characterized in that, The valve core includes a valve core body and a first sealing ring disposed on the valve core body. The first sealing ring is pressed between the edge of the valve core body and the pressure relief channel under the action of the spring pressure to seal the pressure relief channel.

4. The portable water purifier according to claim 3, characterized in that, The valve core body is provided with a guide post and an annular groove surrounding the guide post. The pressure relief channel is provided with a guide slide that slides with the guide post. The first sealing ring is sleeved on the guide post and installed in the annular groove.

5. The portable water purifier according to claim 1, characterized in that, The base is provided with an installation port corresponding to the pressure relief channel, and the pressure relief valve is detachably installed in the pressure relief channel through the installation port.

6. The portable water purifier according to claim 5, characterized in that, The base is provided with a cover for opening or closing the mounting port, the cover restricting the pressure relief valve within the pressure relief channel.

7. The portable water purifier according to claim 6, characterized in that, The cover includes a stop portion that is inserted into the pressure relief channel, and the stop portion has a limiting cavity that cooperates with the pressure relief valve.

8. The portable water purifier according to claim 6, characterized in that, The cover is equipped with a second sealing ring, which forms a seal between the cover and the inner wall of the pressure relief channel when the cover is closed over the installation opening.

9. The portable water purifier according to any one of claims 1-8, characterized in that, The base is provided with a wastewater drainage channel and a pure water drainage channel. The outlet of the wastewater channel and the outlet of the pressure relief channel are connected to the wastewater outlet of the water purifier through the wastewater drainage channel. The pure water channel is connected to the pure water outlet of the water purifier through the pure water drainage channel.

10. The portable water purifier according to claim 9, characterized in that, Along the drainage path of the wastewater drainage channel, the connection point between the wastewater channel and the wastewater drainage channel is located downstream of the connection point between the pressure relief channel and the wastewater drainage channel.

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