Outdoor emergency water purifier

Abstract

This invention relates to an outdoor emergency water purifier, which adopts an integrated structure of filter cartridge, sleeve, and piston assembly. It can quickly switch between working and storage modes via threaded connection. In working mode, the first and second water inlets of the filter cartridge are connected to form a multi-channel water inlet structure. After water is poured into the sleeve, the piston pressurizes and pushes the raw water through the filter element for filtration and purification, resulting in higher water purification efficiency and meeting the needs for rapid water collection in outdoor emergencies. In storage mode, the sleeve is nested around the outside of the filter cartridge, and the water outlet pipe is stored in a recessed cavity. The push rod passes through the central hole and enters the filter element assembly, effectively protecting all core components from impact damage, blockage by debris, and secondary pollution. The device has a high degree of integration, is compact when stored, and has no loose parts, preventing parts loss. Disassembly and switching require no auxiliary tools, allowing a single person to quickly complete the water purification operation and storage. It is suitable for various outdoor emergency scenarios such as wilderness exploration, outdoor work, and emergency disaster relief.

Description

Technical Field

[0001] This invention relates to the field of water purifier technology, and in particular to an outdoor emergency water purifier. Background Technology

[0002] In emergency scenarios such as outdoor exploration, fieldwork, and disaster relief, obtaining safe drinking water is crucial for ensuring the survival and health of personnel. During disasters, water sources are often contaminated due to natural or human factors, and conventional water supply facilities are often difficult to restore quickly when transportation is disrupted or power is lost. This places high demands on the portability, self-sufficiency, and reliability of emergency water purification equipment.

[0003] Currently, although there are various portable water purifiers on the market, they still generally have some shortcomings:

[0004] First, they are power-dependent and have poor environmental adaptability. Many portable water purifiers rely on the water pressure of the faucet or an electric booster pump, which is difficult to apply in environments where there is no electricity, such as in the wild or disaster areas. Moreover, some water purifiers require additional connection of hoses, water bottles or external pumping devices, making the operation steps cumbersome and the accessories are scattered and easy to lose.

[0005] Secondly, the storage and portability are insufficient. Most existing products have a fixed assembly structure, and the components cannot be effectively integrated and stored, resulting in an overall large size and irregular shape, which is not convenient for outdoor carrying or long-distance transport. Summary of the Invention

[0006] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes an outdoor emergency water purifier that is compact, requires no electricity, and has both working and storage modes.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An outdoor emergency water purifier includes a filter cartridge and a filter element assembly disposed within the filter cartridge. The front end of the filter cartridge is open and has a filter cover with a water outlet pipe. A central hole and several first water inlets are provided on the rear wall of the filter cartridge. A convex ring is also provided at the rear end of the filter cartridge, and an internal thread is provided on the inner wall of the convex ring. The device also includes a sleeve and a piston assembly. The rear end of the filter cartridge is open, and the front end has a first protrusion with a second water inlet hole through it. A receiving recess is provided at the inner end of the first protrusion, and a first external thread that mates with the internal thread is provided on the outer wall of the protrusion. The piston assembly includes a piston block and a push rod. The sleeve and the filter cartridge cooperate with each other, and the two have two cooperation modes:

[0009] In its working state, the sleeve is located at the rear end of the filter cartridge, the first external thread and the internal thread are engaged, the second water inlet hole is connected to the first water inlet hole, the piston block is movably located inside the sleeve, and the push rod extends towards the rear end.

[0010] In the storage configuration, the sleeve is fitted over the filter cartridge, the water outlet pipe is located in the receiving recess, the piston block is located at the rear end of the sleeve, and the push rod is inserted into the central hole and passes through the filter cartridge assembly.

[0011] In some embodiments, the filter element assembly includes a columnar frame, in which an ultrafiltration membrane and activated carbon fiber are disposed. The rear end center of the columnar frame is provided with an elongated slot communicating with a central hole. In the stored form, the push rod is inserted into the elongated slot.

[0012] In some embodiments, the filter cover is threadedly connected to the filter cylinder, and the inner end of the filter cover is provided with a clamping block for pressing the columnar frame.

[0013] In some embodiments, a plug is provided at the front end of the first protrusion, and in the working state, the plug can seal and block the central hole.

[0014] In some embodiments, a second protrusion is provided at one end of the piston block, the push rod is provided on the second protrusion, and a second external thread is provided on the outer wall of the second protrusion. In the retracted state, the second external thread can engage with the internal thread.

[0015] In some embodiments, a groove is provided at the end of the piston block away from the second protrusion, and a handle flange is provided in the groove.

[0016] In some embodiments, a rubber ring is provided on the outer wall of the piston block.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This device achieves detachable assembly of the sleeve and filter cartridge through the internal and external threaded connection at the rear end of the filter cartridge, allowing for quick switching between working and storage modes. In working mode, the second water inlet and the first water inlet are precisely connected to form a multi-channel water inlet structure. Raw water poured into the sleeve can quickly pass through the filter cartridge under the pressure of the piston pusher to complete filtration. Compared with traditional natural infiltration and direct suction filtration, the pressurized filtration method has a significantly improved efficiency, which can quickly treat raw water sources in the wild and fully meet the core needs of rapid water retrieval and purification in outdoor emergencies. In storage mode, the sleeve is nested and covers the outside of the filter cartridge, achieving integrated storage of the whole machine. This completely eliminates the disadvantages of the bulky and scattered storage of traditional split-structure equipment, greatly reducing the overall size of the equipment and the space occupied during carrying.

[0019] 2. In the stowed state, the water outlet pipe can be stored in the receiving recess of the first protruding post, and the push rod passes through the central hole and is installed inside the filter element assembly. All core components are covered and protected by the sleeve and filter cartridge structure, which effectively prevents the water outlet pipe, filter element, water inlet and other key structures from being bumped or rubbed during outdoor carrying and transportation. At the same time, it prevents dust and debris from clogging the water inlet channel and filter element pores, eliminates secondary pollution during storage, effectively ensures the stable water purification performance of the equipment, extends the overall service life of the equipment, and improves the adaptability to complex outdoor environments.

[0020] 3. This device integrates water intake, filtration, and storage into a single unit. The piston assembly, sleeve, and filter cartridge do not need to be disassembled for separate storage; after storage, all components are mutually restrained and fixed, eliminating the problem of easily scattered or lost parts in traditional split-type water purification equipment. The overall structure is simple, and disassembly and switching operations are convenient. No auxiliary tools are required, and a single person can quickly complete the water purification operation and storage. With a low operating threshold, it is suitable for the needs of various groups, including those engaged in wilderness exploration, outdoor work, and emergency rescue. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention in its working state.

[0022] Figure 2 This is a cross-sectional view of the structure when the present invention is in its working state.

[0023] Figure 3 For the present invention Figure 2 Enlarged diagram of point A.

[0024] Figure 4 For the present invention Figure 2 Enlarged diagram of point B.

[0025] Figure 5 This is a three-dimensional structural diagram of the present invention in its storage form.

[0026] Figure 6 This is a cross-sectional structural diagram of the present invention in its storage configuration.

[0027] Figure 7 This is one of the exploded structural diagrams of the present invention.

[0028] Figure 8 This is the second exploded structural diagram of the present invention. Detailed Implementation

[0029] The following detailed description provides various embodiments or examples for carrying out the present invention. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0030] like Figures 1-8 An outdoor emergency water purifier is shown, comprising a filter cartridge 1 and a filter element assembly disposed within the filter cartridge 1. The front end of the filter cartridge 1 is open and is provided with a filter cover 2. A water outlet pipe 3 is provided on the filter cover 2. A central hole 4 and several first water inlets 5 are provided on the rear wall of the filter cartridge 1. A convex ring 6 is also provided at the rear end of the filter cartridge 1. An internal thread 7 is provided on the inner wall of the convex ring 6. The device also includes a sleeve 8 and a piston assembly. The rear end of the filter cartridge 1 is open, and the front end is provided with a first protruding post 9. A second water inlet 10 is provided through the first protruding post 9, and a receiving recess 11 is provided at the inner end of the first protruding post 9. A first external thread 14 that can mate with the internal thread 7 is provided on the outer wall of the protruding post 9. The piston assembly includes a piston block 12 and a push rod 13. The sleeve 8 and the filter cartridge 1 cooperate with each other, and the two have two cooperation forms:

[0031] In the working state, the sleeve 8 is located at the rear end of the filter cartridge 1, the first external thread 14 is engaged with the internal thread 7, the second water inlet 10 is connected to the first water inlet 5, the piston block 12 is movably located inside the sleeve 8, and the push rod 13 extends toward the rear end.

[0032] In the storage configuration, the sleeve 8 is fitted over the filter cartridge 1, the water outlet pipe 3 is located inside the receiving recess 11, the piston block 12 is located at the rear end of the sleeve 8, and the push rod 13 is inserted into the central hole 4 and passes through the filter cartridge assembly.

[0033] According to the above structure, the filter cartridge 1 is equipped with a filter element assembly for filtering and purifying raw water; the front end of the filter cartridge 1 is open and equipped with a filter cover 2, on which a water outlet pipe 3 is fixedly installed, serving as a channel for the purified water to be discharged; the rear end wall of the filter cartridge 1 has a central hole 4 and several first water inlet holes 5, and a convex ring 6 is integrally formed on the outer side of the rear end, with internal threads 7 machined on the inner wall of the convex ring 6. The rear end of the filter cartridge 1 is open, and the front end is provided with a first protruding post 9, on which a second water inlet hole 10 is formed through, with a receiving recess 11 at its inner end, and a first external thread 14 that can match and cooperate with the internal thread 7 on its outer wall. The piston assembly consists of a piston block 12 and a push rod 13, which can reciprocate inside the sleeve 8 to realize the function of pressurizing and conveying water.

[0034] During water purification, the sleeve 8 is assembled at the rear end of the filter cartridge 1. The sleeve 8 and filter cartridge 1 are locked together by the external thread 14 on the outer wall of the first protrusion 9 and the internal thread 7 on the inner wall of the protrusion ring 6, achieving a sealed and fixed assembly. Simultaneously, the second water inlet 10 and the first water inlet 5 are precisely aligned and connected, forming a continuous water inlet channel. After assembly, the raw water to be purified is poured into the rear opening of the sleeve 8. The piston block 12 of the piston assembly is placed inside the sleeve 8, and the push rod 13 extends towards the rear end of the sleeve 8. By manually pushing the push rod 13, the piston block 12 slides forward inside the sleeve 8, squeezing the raw water inside the sleeve 8. The pressurized raw water enters the filter cartridge 1 through the second water inlet 10 and the first water inlet 5, and then passes through the filter element assembly inside the filter cartridge 1 to filter and purify impurities, microorganisms, and other harmful substances. Finally, the purified water is discharged through the outlet pipe 3 on the filter cover 2, completing the pressurized water purification operation. The interconnected structure of multiple water inlets can increase the water flow rate, and combined with the piston pressurization method, it can effectively improve the water purification efficiency.

[0035] After the equipment is used, the threaded connection between the sleeve 8 and the rear end of the filter cartridge 1 is released. The sleeve 8 is then disassembled from the rear end of the filter cartridge 1 and reattached to the outside of the filter cartridge 1 in reverse, achieving nested storage of the entire unit. During storage, the water outlet pipe 3 on the filter cover 2 is placed inside the receiving recess 11 of the first protrusion 9 to protect the water outlet structure. At the same time, the piston assembly is returned to its original position, with the piston block 12 positioned at the rear end of the sleeve 8, and the push rod 13 passing forward through the central hole 4 at the rear end of the filter cartridge 1 and inserted into the filter element assembly inside the filter cartridge 1. This storage method allows for integrated nested storage of all components, significantly reducing the overall size of the equipment. It also provides comprehensive protection for core structures such as the water outlet pipe, filter element, and water inlet, preventing damage from impacts, dust accumulation, and blockages, and eliminating the problem of parts being scattered or lost.

[0036] Furthermore, the device incorporates a columnar frame 21 as the filter cartridge support. The columnar frame 21 integrates an ultrafiltration membrane 23 and activated carbon fibers 24, forming a dual-layer composite filtration structure. After the raw water enters the filter cartridge 1 under pressure, it passes sequentially through the activated carbon fibers 24 and the ultrafiltration membrane 23 for stratified filtration. The activated carbon fibers 24 effectively adsorb odors, pigments, organic impurities, and some harmful residues in the water, while the ultrafiltration membrane 23 precisely intercepts particulate impurities such as sediment, colloids, bacteria, and microorganisms. This two-stage filtration significantly improves the quality of purified raw water from the field, ensuring safe drinking water. A long slot 22 is located at the center of the rear end of the columnar frame 21, corresponding to the central hole 4 at the rear end of the filter cartridge 1, providing a dedicated channel for the insertion and retraction of the push rod 13.

[0037] When the device switches to the storage mode, the push rod 13, along with the piston assembly, passes through the central hole 4 of the filter cartridge 1 and is precisely inserted into the elongated slot 22 of the columnar frame 21. The elongated slot 22 can limit and guide the push rod 13, so that the push rod 13 is neatly stored inside the filter cartridge assembly. This not only enables the positioning and storage of the piston assembly, but also prevents the parts from shaking, shifting, or being scattered and lost.

[0038] The filter cover 2 and filter cartridge 1 are assembled using a threaded connection, which is convenient for disassembly and assembly and ensures good sealing. A clamping block 31 is integrally installed inside the filter cover 2. When the filter cover 2 is screwed onto the front end of the filter cartridge 1, the clamping block 31 presses tightly against the front end face of the columnar frame 21, achieving axial clamping and limiting of the entire filter element assembly. This structure effectively fixes the installation position of the filter element assembly inside the filter cartridge 1, preventing the filter element assembly from shifting, loosening, or shaking during pressurized water purification operations and during storage and transportation. This ensures a stable water flow path inside the filter cartridge 1, prevents unfiltered raw water from flowing directly through, and guarantees the overall stability and filtration effect of the filtration process.

[0039] When the filter element assembly is worn out and needs to be replaced, simply loosen and remove the filter cover 2 to release the clamping block 31 from the column frame 21. The old filter element assembly can be directly taken out from the front opening of the filter cylinder 1. After replacing the filter element assembly with a brand new one, simply tighten the filter cover 2 again to complete the assembly and replacement. The overall disassembly and replacement operation is simple and convenient, without the need to disassemble other structures of the equipment. The later maintenance is easy and highly practical.

[0040] A plug 41 is installed at the front end of the first protrusion 9. When the equipment switches to the working mode, the sleeve 8 and the filter cartridge 1 are locked together by threads. After the first protrusion 9 is assembled in place, the plug 41 precisely seals and blocks the interior of the central hole 4 at the rear end of the filter cartridge 1. During the water filling and pressurization process of the sleeve 8, the plug 41 can completely block the central hole 4, blocking the channel for raw water to leak out of the central hole 4. This ensures that the pressurized raw water inside the sleeve 8 can only enter the interior of the filter cartridge 1 through the second water inlet 10 and the first water inlet 5 to participate in filtration, effectively avoiding pressurization leakage and depressurization, ensuring stable pressure for equipment pressurization filtration, improving water purification efficiency, and preventing unfiltered raw water from leaking from gaps, thus ensuring the sealing and reliability of the water purification operation.

[0041] See Figures 6-8As shown, a second protrusion 51 is provided at one end of the piston block 12, and the push rod 13 is fixedly installed on the second protrusion 51. The outer wall of the second protrusion 51 is machined with a second external thread 52. When the equipment is switched to the storage mode, the push rod 13 enters the filter element assembly to complete the return to its original position. At the same time, the second external thread 52 of the second protrusion 51 can form a threaded engagement with the internal thread 7 of the rear end protruding ring 6 of the filter cartridge 1 to lock it in place. This structure can axially fix and limit the entire piston assembly in the storage state, so that the piston assembly is not loose or offset after storage, completely solving the problem of easy shaking, dislodgement, and displacement of piston parts in traditional storage structures. It realizes the integrated locking and storage of the piston assembly and the filter cartridge structure, further improving the compactness and structural stability of the whole machine.

[0042] A groove 61 is provided at the end of the piston block 12 away from the second protrusion 51, and a handle flange 62 is provided inside the groove 61. During the assembly process of the device in its stored form, the handle flange 62 can serve as a force fulcrum, making it easy for the operator to grip and drive the piston block 12 to rotate as a whole, so that the second external thread 52 on the outer wall of the second protrusion 51 can quickly engage and lock with the internal thread 7 at the rear end of the filter cartridge 1, easily completing the fixed storage of the piston assembly, making the operation labor-saving and convenient.

[0043] A rubber ring 71 is fitted to the outer wall of the piston block 12. During the pressurized water purification process, the rubber ring 71 fits tightly against the inner wall of the sleeve 8, effectively filling the gap between the piston block 12 and the inner wall of the sleeve 8, forming an annular sealing structure. On the one hand, this prevents pressurized raw water inside the sleeve 8 from leaking and depressurizing through the piston gap, ensuring sufficient and stable water pressure inside the sleeve 8 and guaranteeing pressurized filtration efficiency. On the other hand, it reduces the hard friction between the piston block 12 and the inner wall of the sleeve 8, reduces component wear, and improves the smoothness of the piston assembly's reciprocating sliding and the overall service life of the equipment.

[0044] Based on the accompanying drawings and the foregoing illustrations and descriptions, the basic principles and main features of the present invention, as well as its advantages, those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An outdoor emergency water purifier, comprising a filter cartridge (1) and a filter element assembly disposed within the filter cartridge (1), wherein the front end of the filter cartridge (1) is an open structure and is provided with a filter cover (2), and a water outlet pipe (3) is provided on the filter cover (2), characterized in that, A central hole (4) and several first water inlets (5) are provided on the rear wall of the filter cylinder (1). A convex ring (6) is also provided at the rear end of the filter cylinder (1). An internal thread (7) is provided on the inner wall of the convex ring (6). The filter cylinder (1) also includes a sleeve (8) and a piston assembly. The rear end of the filter cylinder (1) is an open structure. A first convex post (9) is provided at the front end. A second water inlet (10) is provided through the first convex post (9). A receiving concave hole (11) is provided at the inner end of the first convex post (9). A first external thread (14) that can cooperate with the internal thread (7) is provided on the outer wall of the convex post (9). The piston assembly includes a piston block (12) and a push rod (13). The sleeve (8) and the filter cylinder (1) cooperate with each other and have two cooperation forms: In the working state, the sleeve (8) is located at the rear end of the filter cartridge (1), the first external thread (14) is engaged with the internal thread (7), the second water inlet (10) is connected to the first water inlet (5), the piston block (12) is movably located inside the sleeve (8), and the push rod (13) extends toward the rear end. In the storage configuration, the sleeve (8) is fitted over the filter cartridge (1), the water outlet pipe (3) is located inside the receiving recess (11), the piston block (12) is located at the rear end of the sleeve (8), and the push rod (13) is inserted into the central hole (4) towards the front end and passes through the filter element assembly.

2. The outdoor emergency water purifier according to claim 1, characterized in that: The filter element assembly includes a columnar frame (21), in which an ultrafiltration membrane (23) and activated carbon fiber (24) are disposed. The rear end center of the columnar frame (21) is provided with an elongated slot (22) communicating with the central hole (4). In the stored form, the push rod (13) is inserted into the elongated slot (22).

3. An outdoor emergency water purifier according to claim 2, characterized in that: The filter cover (2) is threadedly connected to the filter cylinder (1), and the inner end of the filter cover (2) is provided with a clamping block (31) for pressing the columnar frame (21).

4. An outdoor emergency water purifier according to claim 1, characterized in that: A plug (41) is provided at the front end of the first protrusion (9). In the working state, the plug (41) can seal and block the center hole (4).

5. An outdoor emergency water purifier according to claim 1, characterized in that: A second protrusion (51) is provided at one end of the piston block (12), and the push rod (13) is provided on the second protrusion (51). A second external thread (52) is provided on the outer wall of the second protrusion (51). In the storage mode, the second external thread (52) can cooperate with the internal thread (7).

6. An outdoor emergency water purifier according to claim 5, characterized in that: A groove (61) is provided at one end of the piston block (12) away from the second protrusion (51), and a handle flange (62) is provided in the groove (61).

7. An outdoor emergency water purifier according to claim 1, characterized in that: A rubber ring (71) is provided on the outer wall of the piston block (12).

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